:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f4f6f9;--surface:#fff;--surface-strong:#fff;--surface-muted:#eef1f5;--ink:#1b2733;--ink-soft:#5c6b7a;--ink-muted:#7e8b99;--line:#dce2e8;--line-strong:#cfd6dd;--accent:#0f6cbf;--accent-strong:#0c4f8f;--accent-soft:#eef5fc;--accent-ink:#0a3a66;--warning:#a07520;--warning-soft:#f5e5b0;--danger:#b14d26;--danger-soft:#fbf0eb;--success:#2f7d4b;--success-soft:#edf8f0;--shadow:0 4px 14px #14233c12, 0 2px 4px #14233c0d;--radius:8px;--font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace}@media (prefers-color-scheme:dark){:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}}*{box-sizing:border-box}html{min-width:320px;font-family:var(--font-sans);-webkit-font-smoothing:antialiased}body,html{background:var(--bg)}body{min-height:100dvh;color:var(--ink);margin:0}button,input,select,textarea{font:inherit}a,button{-webkit-tap-highlight-color:transparent}a{color:inherit}:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 50%,transparent);outline-offset:3px}.app-page{min-height:100dvh}.app-header{z-index:20;border-bottom:1px solid color-mix(in srgb,var(--line) 82%,transparent);background:color-mix(in srgb,var(--bg) 92%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);height:68px;position:sticky;top:0}.app-header__inner{justify-content:space-between;align-items:center;gap:24px;width:min(1180px,100% - 40px);height:100%;margin:0 auto;display:flex}.brand-lockup{color:var(--ink);align-items:center;gap:10px;text-decoration:none;display:inline-flex}.brand-mark{background:var(--accent-strong);border-radius:50%;flex:0 0 35px;place-items:center;width:35px;height:35px;display:inline-grid;overflow:hidden}.brand-mark img{-o-object-fit:contain;object-fit:contain;width:27px;height:27px}.brand-lockup__text{letter-spacing:0;line-height:1.05;display:grid}.brand-lockup__text strong{font-size:15px;font-weight:760}.brand-lockup__text span{color:var(--ink-muted);text-transform:uppercase;margin-top:3px;font-size:10px;font-weight:700}.app-header__actions,.app-header__student{align-items:center;display:flex}.app-header__actions{gap:8px}.app-header__student{min-height:36px;color:var(--ink-soft);padding:0 11px;font-size:13px;font-weight:650}.icon-button{border-radius:var(--radius);width:38px;height:38px;color:var(--ink-soft);border:1px solid #0000;place-items:center;transition:background .16s,border-color .16s,color .16s;display:inline-grid}.icon-button:hover{border-color:var(--line);background:var(--surface);color:var(--ink)}.home-shell{width:min(1180px,100% - 40px);margin:0 auto;padding:44px 0 76px}.home-intro{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px;min-height:154px;padding-bottom:27px;display:grid}.home-intro__context{color:var(--accent);margin:0 0 9px;font-size:13px;font-weight:730}.home-intro h1{letter-spacing:0;max-width:720px;margin:0;font-size:47px;font-weight:730;line-height:1.12}.home-intro p:last-child{max-width:620px;color:var(--ink-soft);margin:14px 0 0;font-size:16px;line-height:1.65}.home-intro__mark .brand-mark{opacity:.9;width:76px;height:76px}.home-intro__mark .brand-mark img{width:58px;height:58px}.metric-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.metric-strip__item{min-width:0;color:var(--accent);align-items:center;gap:12px;padding:19px 22px;display:flex}.metric-strip__item+.metric-strip__item{border-left:1px solid var(--line)}.metric-strip__item div{gap:1px;min-width:0;display:grid}.metric-strip__item strong{color:var(--ink);font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:22px;line-height:1.1}.metric-strip__item span{color:var(--ink-muted);white-space:nowrap;font-size:12px}.review-panel{border:1px solid color-mix(in srgb,var(--accent) 28%,var(--line));border-radius:var(--radius);background:var(--accent-soft);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px;margin:28px 0 34px;padding:19px 21px;display:grid}.review-panel--empty{background:var(--surface);border-color:var(--line)}.review-panel__icon{background:var(--surface-strong);width:43px;height:43px;color:var(--accent);border-radius:50%;place-items:center;display:grid}.review-panel__copy h2,.review-panel__copy p{margin:0}.review-panel__copy h2{font-size:17px;line-height:1.35}.review-panel__copy p{color:var(--ink-soft);margin-top:4px;font-size:13px;line-height:1.55}.button{border-radius:var(--radius);white-space:nowrap;cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 17px;font-size:14px;font-weight:720;text-decoration:none;transition:transform .12s,background .16s,border-color .16s;display:inline-flex}.button:active{transform:translateY(1px)}.button:disabled{cursor:wait;opacity:.64}.button--primary{background:var(--accent-strong);color:#f6fbf7}.button--primary:hover{background:color-mix(in srgb,var(--accent-strong) 88%,#08150e)}.button--secondary{border-color:var(--line-strong);background:var(--surface);color:var(--ink)}.button--light{color:#153c27;background:#f4f8f5}.inline-message{color:var(--danger);margin:-22px 0 28px;font-size:13px}.home-grid{grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:46px;display:grid}.section-heading{border-bottom:1px solid var(--line-strong);color:var(--accent);justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:15px;padding-bottom:17px;display:flex}.section-heading h2,.section-heading p{margin:0}.section-heading h2{color:var(--ink);font-size:22px;line-height:1.2}.section-heading p{color:var(--ink-muted);margin-top:6px;font-size:13px}.module-list{display:grid}.module-block{border-bottom:1px solid var(--line)}.module-block__header{width:100%;min-height:72px;color:var(--ink);text-align:left;cursor:pointer;background:0 0;border:0;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:12px;padding:12px 6px;display:grid}.module-block__header:hover{background:color-mix(in srgb,var(--surface-muted) 66%,transparent)}.module-block__index{color:var(--ink-muted);font-family:var(--font-mono);font-size:12px}.module-block__title{gap:3px;min-width:0;display:grid}.module-block__title strong{text-overflow:ellipsis;white-space:nowrap;font-size:15px;overflow:hidden}.module-block__title span{color:var(--ink-muted);font-size:12px}.module-block__caret{color:var(--ink-muted);transition:transform .16s}.module-block__caret.is-open{transform:rotate(180deg)}.module-block__body{padding:2px 0 18px 54px}.phase-group+.phase-group{margin-top:20px}.phase-group h3{color:var(--ink-muted);margin:0 0 7px;font-size:11px;font-weight:720}.phase-group--loose{border-bottom:1px solid var(--line)}.task-row{border-radius:var(--radius);min-height:58px;color:var(--ink);grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:11px;padding:8px 10px;text-decoration:none;transition:background .15s,transform .15s;display:grid}a.task-row:hover{background:var(--surface-muted);transform:translate(2px)}.task-row__icon{border:1px solid var(--line);background:var(--surface);width:36px;height:36px;color:var(--ink-soft);border-radius:50%;place-items:center;display:grid}.task-row__main{gap:2px;min-width:0;display:grid}.task-row__main strong{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.task-row__main span,.task-row__state{color:var(--ink-muted);font-size:11px}.task-row__state{white-space:nowrap;align-items:center;gap:4px;display:inline-flex}.task-row--current{background:var(--accent-soft)}.task-row--current .task-row__icon{border-color:color-mix(in srgb,var(--accent) 40%,var(--line));color:var(--accent)}.task-row--current .task-row__state{color:var(--accent-ink);font-weight:700}.task-row--completed .task-row__icon{color:var(--accent)}.task-row--disabled{opacity:.58}.task-row--expired .task-row__state{color:var(--danger)}.empty-state{color:var(--ink-muted);justify-items:start;gap:7px;padding:38px 0;display:grid}.empty-state h3,.empty-state p{margin:0}.empty-state h3{color:var(--ink);font-size:16px}.empty-state p{font-size:13px}.home-aside{gap:20px;display:grid}.vocab-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:20px}.vocab-panel__header{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;display:grid}.vocab-panel__icon{background:var(--accent-soft);width:38px;height:38px;color:var(--accent);border-radius:50%;place-items:center;display:grid}.vocab-panel__header h2,.vocab-panel__header p{margin:0}.vocab-panel__header h2{font-size:15px}.vocab-panel__header p{color:var(--ink-muted);margin-top:2px;font-size:11px}.text-link{color:var(--accent);white-space:nowrap;align-items:center;gap:4px;font-size:12px;font-weight:700;text-decoration:none;display:inline-flex}.vocab-panel__number{align-items:baseline;gap:8px;margin:25px 0 20px;display:flex}.vocab-panel__number strong{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:37px;line-height:1}.vocab-panel__number span{color:var(--ink-muted);font-size:12px}.goal-progress__copy{color:var(--ink-soft);justify-content:space-between;align-items:center;gap:12px;font-size:11px;display:flex}.goal-progress__copy strong{color:var(--ink);font-family:var(--font-mono)}.goal-progress__track{background:var(--surface-muted);border-radius:3px;height:5px;margin-top:9px;overflow:hidden}.goal-progress__track span{border-radius:inherit;background:var(--accent);height:100%;display:block}.goal-complete{color:var(--accent);align-items:center;gap:8px;font-size:12px;font-weight:700;display:flex}.level-scale{grid-template-columns:repeat(6,1fr);gap:5px;margin-top:21px;display:grid}.level-scale span{background:var(--line);border-radius:2px;height:4px}.level-scale span.is-reached{background:var(--accent)}.level-scale span.is-current{background:color-mix(in srgb,var(--accent) 58%,var(--line))}.quick-nav{border-top:1px solid var(--line);display:grid}.quick-nav a{border-bottom:1px solid var(--line);min-height:58px;color:var(--ink-soft);justify-content:space-between;align-items:center;gap:12px;text-decoration:none;display:flex}.quick-nav a:hover{color:var(--accent)}.quick-nav a>span{align-items:center;gap:10px;display:inline-flex}.quick-nav strong{color:var(--ink);font-size:13px}.quick-nav small{color:var(--ink-muted);font-size:11px}.live-banner{border-radius:var(--radius);background:var(--accent-strong);color:#f2f7f3;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;margin:-12px 0 28px;padding:14px 16px;display:grid}.live-banner div{gap:2px;display:grid}.live-banner strong{font-size:14px}.live-banner span{color:#f2f7f3bd;font-size:12px}.access-page,.state-page{place-items:center;min-height:100dvh;padding:24px;display:grid}.access-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);width:min(520px,100%);box-shadow:var(--shadow);justify-items:start;gap:30px;padding:44px;display:grid}.access-panel__brand{color:var(--accent);font-size:13px;font-weight:750}.access-panel__copy h1,.access-panel__copy p{margin:0}.access-panel__copy h1{letter-spacing:0;max-width:430px;margin-top:7px;font-size:43px;line-height:1.13}.access-panel__copy p:last-child{max-width:390px;color:var(--ink-soft);margin-top:13px;line-height:1.65}.state-page{color:var(--danger);text-align:center;align-content:center;justify-items:center}.state-page h1,.state-page p{margin:0}.state-page h1{color:var(--ink);margin-top:13px;font-size:25px}.state-page p{max-width:460px;color:var(--ink-soft);margin-top:8px;line-height:1.6}.state-page__actions{gap:10px;margin-top:22px;display:flex}.skeleton{border-radius:var(--radius);background:var(--surface-muted);overflow:hidden}.skeleton:after{content:"";background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--surface-strong) 62%,transparent),transparent);width:40%;height:100%;animation:1.3s ease-in-out infinite skeleton-sweep;display:block}.skeleton--title{width:min(620px,78%);height:92px;margin:32px 0}.skeleton--metrics{width:100%;height:76px;margin-bottom:36px}.skeleton--content{height:520px}.skeleton--aside{height:290px}@keyframes skeleton-sweep{0%{transform:translate(-110%)}to{transform:translate(260%)}}@media (width<=900px){.home-grid{grid-template-columns:minmax(0,1fr);gap:36px}.home-aside{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}@media (width<=700px){.app-header__inner,.home-shell{width:min(100% - 28px,1180px)}.app-header__student{display:none}.home-shell{padding-top:28px}.home-intro{grid-template-columns:minmax(0,1fr);gap:0;min-height:0}.home-intro h1{font-size:31px}.home-intro__mark{display:none}.metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.metric-strip__item{padding:15px 12px}.metric-strip__item+.metric-strip__item{border-left:0}.metric-strip__item:nth-child(2n){border-left:1px solid var(--line)}.metric-strip__item:nth-child(n+3){border-top:1px solid var(--line)}.live-banner,.review-panel{grid-template-columns:auto minmax(0,1fr)}.live-banner .button,.review-panel__action{grid-column:1/-1;width:100%}.home-aside{grid-template-columns:minmax(0,1fr)}.module-block__body{padding-left:8px}.task-row{grid-template-columns:38px minmax(0,1fr)}.task-row__state{grid-column:2}.access-panel{padding:32px 24px}}.review-page{background:var(--bg);min-height:100dvh}.review-progress{z-index:45;background:var(--line);height:3px;position:fixed;inset:0 0 auto}.review-progress span{background:var(--accent);height:100%;transition:width .24s;display:block}.review-topbar{border-bottom:1px solid var(--line);grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:14px;width:min(920px,100% - 40px);min-height:68px;margin:0 auto;display:grid}.review-topbar>div{gap:2px;display:grid}.review-topbar strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.review-topbar span{color:var(--ink-muted);font-family:var(--font-mono);font-size:9px}.review-shell{place-items:center;width:min(920px,100% - 40px);min-height:calc(100dvh - 71px);margin:0 auto;padding:46px 0 70px;display:grid}.review-complete,.review-ready{text-align:center;justify-items:center;width:min(520px,100%);display:grid}.review-complete>svg,.review-ready>svg{color:var(--accent)}.review-complete>p,.review-ready>p{color:var(--accent);margin:17px 0 0;font-size:10px;font-weight:800}.review-complete h1,.review-ready h1{letter-spacing:0;margin:5px 0 0;font-size:37px}.review-ready__stats,.review-summary{background:var(--line);justify-content:center;gap:1px;margin:31px 0;display:flex}.review-ready__stats span,.review-summary span{background:var(--bg);min-width:112px;color:var(--ink-muted);gap:3px;padding:14px 18px;font-size:10px;display:grid}.review-ready__stats strong,.review-summary strong{color:var(--ink);font-size:21px}.review-summary .is-correct strong{color:var(--accent)}.review-summary .is-wrong strong{color:var(--danger)}.review-session{justify-items:center;width:min(600px,100%);display:grid}.review-session__meta{width:100%;color:var(--ink-muted);font-family:var(--font-mono);justify-content:end;gap:15px;margin-bottom:10px;font-size:10px;display:flex}.review-session__meta span{align-items:center;gap:4px;display:flex}.review-session__meta span:first-child{color:var(--accent)}.review-session__meta span:last-child{color:var(--danger)}.review-timer{background:var(--line);width:100%;height:3px;margin-bottom:12px;overflow:hidden}.review-timer span{background:var(--accent);height:100%;transition:width 90ms linear;display:block}.review-timer span.is-low{background:var(--danger)}.review-card{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-strong);width:100%;min-height:360px;box-shadow:var(--shadow);cursor:pointer;display:grid;overflow:hidden}.review-card__back,.review-card__front{text-align:center;align-content:center;justify-items:center;min-width:0;padding:42px;display:grid}.review-card__back>p,.review-card__front p{color:var(--accent);margin:0;font-size:10px;font-weight:800}.review-card__front h1{overflow-wrap:anywhere;letter-spacing:0;max-width:100%;margin:9px 0 0;font-family:Georgia,Times New Roman,serif;font-size:54px;font-weight:600;line-height:1.1}.review-card__front>span{color:var(--ink-muted);margin-top:14px;font-size:12px}.review-card__back{text-align:left;cursor:default;align-content:start;justify-items:stretch;position:relative}.review-card__back>h2{overflow-wrap:anywhere;letter-spacing:0;margin:4px 0 20px;font-size:30px}.review-pronounce{border-radius:var(--radius);background:var(--accent-soft);width:38px;height:38px;color:var(--accent);cursor:pointer;border:0;place-items:center;display:grid;position:absolute;top:17px;right:17px}.review-meanings{gap:10px;display:grid}.review-meanings p{border-bottom:1px solid var(--line);grid-template-columns:auto minmax(0,1fr);gap:3px 9px;margin:0;padding-bottom:10px;display:grid}.review-meanings small{color:var(--accent);font-size:9px;font-weight:750}.review-meanings strong{font-size:17px}.review-meanings span{color:var(--ink-muted);grid-column:2;font-size:11px}.review-card__back blockquote{border-left:2px solid var(--line-strong);margin:20px 0 0;padding-left:13px}.review-card__back blockquote span,.review-card__back blockquote strong{font-size:12px;line-height:1.55;display:block}.review-card__back blockquote span{color:var(--ink-muted);margin-top:2px}.review-flip-button{margin-top:18px}.review-grade-actions{grid-template-columns:1fr 1fr;gap:8px;width:100%;margin-top:13px;display:grid}.review-grade-actions button{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);min-height:68px;color:var(--ink);cursor:pointer;justify-content:center;align-items:center;gap:10px;display:flex}.review-grade-actions button:first-child{color:var(--danger)}.review-grade-actions button:last-child{color:var(--accent)}.review-grade-actions span{text-align:left;gap:2px;font-size:13px;font-weight:750;display:grid}.review-grade-actions small{color:var(--ink-muted);font-size:9px;font-weight:500}.review-production{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-strong);width:100%;min-height:360px;box-shadow:var(--shadow);padding:42px}.review-production>p{color:var(--accent);margin:0;font-size:10px;font-weight:800}.review-production>h1{letter-spacing:0;overflow-wrap:anywhere;margin:10px 0 0;font-size:29px;line-height:1.4}.review-production>span{color:var(--ink-muted);margin-top:10px;font-size:12px;line-height:1.55;display:block}.review-production form{grid-template-columns:minmax(0,1fr) auto;gap:8px;margin-top:31px;display:grid}.review-production input{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--bg);width:100%;min-width:0;height:48px;color:var(--ink);padding:0 14px}.review-umlauts{flex-wrap:wrap;gap:5px;margin-top:10px;display:flex}.review-umlauts button{border:1px solid var(--line);background:var(--surface-muted);width:33px;height:31px;color:var(--ink);cursor:pointer;border-radius:3px}.review-answer{border-left:3px solid var(--accent);background:var(--accent-soft);justify-items:start;gap:6px;margin-top:28px;padding:18px;display:grid}.review-answer.is-wrong{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 10%,var(--surface))}.review-answer>span{color:var(--ink-muted);font-size:10px;font-weight:750}.review-answer>strong{overflow-wrap:anywhere;font-size:25px}.review-answer>small{color:var(--ink-soft);font-size:11px}.review-answer .button{margin-top:8px}.review-master{color:var(--ink-muted);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;margin-top:16px;padding:7px 9px;font-size:10px;display:inline-flex}.review-master:hover{color:var(--accent)}.review-message{color:var(--danger);margin:10px 0 0;font-size:11px}@media (width<=700px){.review-shell,.review-topbar{width:min(100% - 28px,920px)}.review-shell{align-items:start;padding-top:28px}.review-card{min-height:330px}.review-card__back,.review-card__front,.review-production{padding:31px 24px}.review-card__front h1{font-size:44px}.review-production>h1{font-size:24px}.review-production form{grid-template-columns:minmax(0,1fr)}.review-production form .button{width:100%}.review-ready__stats,.review-summary{grid-template-columns:repeat(2,1fr);width:100%;display:grid}.review-ready__stats span,.review-summary span{min-width:0}}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.workspace-shell{background:var(--bg);min-height:100dvh}.workspace-rail{z-index:60;color:#aeb4bd;background:#23272e;border-right:1px solid #0003;flex-direction:column;width:76px;display:flex;position:fixed;inset:0 auto 0 0}.workspace-rail__brand{border-bottom:1px solid #ffffff14;flex:0 0 56px;place-items:center;height:56px;display:grid}.workspace-rail__brand img{filter:brightness(0)invert();opacity:.92;width:auto;height:26px;display:block}.workspace-rail__nav{flex-direction:column;padding:8px 0;display:flex}.workspace-rail__item{color:#aeb4bd;text-align:center;white-space:nowrap;border-left:3px solid #0000;flex-direction:column;justify-content:center;align-items:center;gap:5px;min-height:62px;padding:8px 4px;font-size:11px;line-height:1.15;text-decoration:none;transition:background .12s,color .12s;display:flex}.workspace-rail__item:hover{color:#fff;background:#ffffff0f}.workspace-rail__item.is-active{color:#fff;background:#ffffff1a;border-left-color:#1a7fd4}.workspace-rail__logout{margin:0}.workspace-rail__logout-button{width:100%;font:inherit;cursor:pointer;background:0 0;border-top:0;border-bottom:0;border-right:0}.workspace-rail__spacer{flex:1}.workspace-topbar{border-bottom:1px solid var(--line);background:var(--surface);height:56px;color:var(--ink-soft);justify-content:flex-end;align-items:center;gap:14px;margin-left:76px;padding:0 32px;font-size:13px;display:flex}.workspace-topbar>a{color:var(--ink-soft);text-decoration:none}.workspace-account{align-items:center;gap:7px;display:inline-flex}.workspace-account>img,.workspace-account>span{background:var(--surface-muted);width:24px;height:24px;color:var(--ink-soft);-o-object-fit:cover;object-fit:cover;border-radius:50%;place-items:center;font-size:10px;display:grid}.workspace-account strong{color:var(--ink-soft);font-size:13px;font-weight:400}.workspace-main{min-width:0;margin-left:76px;padding:32px 24px 80px}.workspace-main.teacher-main{width:auto}.workspace-main .home-shell{width:min(1200px,100%);padding:0}@media (width<=640px){.workspace-rail{border-bottom:1px solid #0000004d;border-right:0;flex-direction:row;align-items:stretch;width:auto;height:48px;position:static}.workspace-rail__brand{border-bottom:0;border-right:1px solid #ffffff14;flex-basis:56px;width:56px;height:48px}.workspace-rail__brand img{height:23px}.workspace-rail__nav{scrollbar-width:none;flex-direction:row;flex:1;min-width:0;padding:0;overflow-x:auto}.workspace-rail__nav::-webkit-scrollbar{display:none}.workspace-rail__item{border-bottom:3px solid #0000;border-left:0;flex-direction:row;flex:none;gap:6px;min-height:48px;padding:0 13px;font-size:12px}.workspace-rail__item.is-active{border-bottom-color:#1a7fd4;border-left-color:#0000}.workspace-rail__item svg{width:18px;height:18px}.workspace-rail>.workspace-rail__item,.workspace-rail__spacer{display:none}.workspace-rail__logout{border-left:1px solid #ffffff14;flex:0 0 48px}.workspace-rail__logout-button{border-bottom:0;justify-content:center;width:48px;padding:0}.workspace-rail__logout-button span{display:none}.workspace-topbar{height:44px;margin-left:0;padding:0 14px}.workspace-main{margin-left:0;padding:24px 14px 64px}}.workspace-shell:has(.journey-home) .workspace-topbar{display:none}.student-main:has(.journey-home){padding:0;top:0;overflow:hidden}.journey-home{color:#e9f1f8;background:radial-gradient(120% 100% at 30% 20%,#102a44,#0a1b2e 70%);width:100%;height:100vh;min-height:560px;position:relative;overflow:hidden}.journey-map-canvas{position:absolute;inset:0}.journey-hud{z-index:5;pointer-events:none;background:linear-gradient(#081422e6,#08142200);justify-content:space-between;gap:20px;padding:16px 20px 72px;display:flex;position:absolute;top:0;left:0;right:0}.journey-hud h1{color:#f2f7fc;letter-spacing:0;margin:0;font-size:19px}.journey-hud h1 small{color:#8fb0cd;margin-left:8px;font-size:12px;font-weight:600}.journey-progress{color:#a9c3dc;align-items:center;gap:9px;margin-top:8px;font-size:12px;display:flex}.journey-progress>i{background:#ffffff26;border-radius:99px;width:180px;height:5px;display:block;overflow:hidden}.journey-progress>i b{border-radius:inherit;background:linear-gradient(90deg,#6fbf8f,#e6c86e);height:100%;display:block}.journey-stats{gap:8px;display:flex}.journey-stats span{color:#a9c3dc;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#ffffff12;border:1px solid #ffffff1c;border-radius:8px;flex-direction:column;align-items:center;min-width:68px;padding:6px 10px;font-size:11px;display:flex}.journey-stats b{color:#fff;font-size:16px}.journey-task-link{z-index:7;color:#cfe0ef;background:#0a1b2ebd;border:1px solid #ffffff24;border-radius:5px;align-items:center;gap:5px;padding:7px 10px;font-size:11px;text-decoration:none;display:inline-flex;position:absolute;top:82px;right:18px}.journey-goal-card,.journey-review-card{z-index:7;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#091828eb;border:1px solid #ffffff26;border-radius:8px;position:absolute;bottom:18px}.journey-review-card{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;width:min(380px,100% - 36px);padding:13px 16px;display:grid;left:18px}.journey-review-card>strong{color:#ffd978;font-size:29px}.journey-review-card span b,.journey-review-card span small{display:block}.journey-review-card span b{color:#f2f7fc;font-size:12px}.journey-review-card span small{color:#8fb0cd;margin-top:3px;font-size:10px}.journey-review-card button{color:#fff;min-height:36px;font:inherit;cursor:pointer;background:#4eaa78;border:0;border-radius:18px;align-items:center;gap:5px;padding:0 13px;font-size:12px;font-weight:700;display:inline-flex}.journey-review-card button:disabled{opacity:.55;cursor:default}.journey-goal-card{width:min(320px,100% - 36px);padding:13px 15px;right:18px}.journey-goal-card>header{color:#dbe7f3;justify-content:space-between;align-items:center;gap:10px;font-size:10px;display:flex}.journey-goal-card>header b{color:#ffd978;border:1px solid #ffd97859;border-radius:3px;padding:3px 6px;font-size:10px}.journey-goal-card p{color:#dbe7f3;justify-content:space-between;align-items:baseline;margin:8px 0 2px;font-size:11px;display:flex}.journey-goal-card p strong{color:#fff;font-size:16px}.journey-goal-card>small{color:#8fb0cd;margin-bottom:9px;font-size:9px;display:block}.journey-goal-card>div{align-items:center;gap:7px;display:flex}.journey-goal-card i{background:#ffffff24;border-radius:4px;flex:1;height:5px;display:block;overflow:hidden}.journey-goal-card i b{background:#6fbf8f;height:100%;display:block}.journey-goal-card>div span,.journey-goal-card>strong{color:#a9c3dc;font-size:10px}.journey-goal-card>strong{margin-top:8px;font-weight:500;display:block}.journey-certificate-card{z-index:7;color:#ffd978;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#091828eb;border:1px solid #ffd97859;border-radius:8px;grid-template-columns:24px minmax(0,1fr) auto;align-items:center;gap:10px;width:min(360px,100% - 36px);min-height:58px;padding:10px 12px;display:grid;position:absolute;top:112px;right:18px}.journey-certificate-card>span{gap:2px;min-width:0;display:grid}.journey-certificate-card strong{color:#fff;text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.journey-certificate-card small{color:#a9c3dc;font-size:9px;line-height:1.35}.journey-certificate-card>a{color:#ffd978;border:1px solid #ffd97873;border-radius:4px;align-items:center;gap:5px;min-height:32px;padding:0 9px;font-size:9px;font-weight:750;text-decoration:none;display:inline-flex}.journey-certificate-card>em{color:#a9c3dc;white-space:nowrap;font-size:9px;font-style:normal}.journey-message--certificate{top:182px}.journey-stop{z-index:8;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#091828f0;border:1px solid #ffffff24;border-radius:8px;width:min(390px,100% - 150px);max-height:min(52vh,460px);padding:16px;position:absolute;bottom:92px;left:18px;overflow:auto;box-shadow:0 14px 40px #00000047}.journey-stop>button{color:#a9c3dc;cursor:pointer;background:0 0;border:0;border-radius:4px;place-items:center;width:30px;height:30px;display:grid;position:absolute;top:10px;right:10px}.journey-stop>p{color:#8fb0cd;text-transform:uppercase;margin:0 0 2px;font-size:11px;font-weight:700}.journey-stop h2{color:#fff;letter-spacing:0;margin:0 36px 12px 0;font-size:17px}.journey-stop>div{gap:4px;display:grid}.journey-stop>div>a,.journey-stop>div>span{color:#e8f0f7;border-radius:4px;grid-template-columns:10px minmax(0,1fr) auto;align-items:center;gap:9px;min-height:48px;padding:7px 8px;text-decoration:none;display:grid}.journey-stop>div>a:hover{background:#ffffff14}.journey-stop i{background:#4a6076;border-radius:50%;width:8px;height:8px}.journey-stop i.is-completed{background:#e6c86e}.journey-stop i.is-current{background:#6fbf8f;box-shadow:0 0 0 3px #6fbf8f33}.journey-stop small,.journey-stop strong{display:block}.journey-stop strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.journey-stop small{color:#8fb0cd;margin-top:2px;font-size:11px}.journey-stop em{color:#a9c3dc;font-size:11px;font-style:normal}.journey-stop__empty{color:#8fb0cd;margin:4px 0 10px;font-size:12px}.journey-stop__all{color:#b9d8f1;align-items:center;gap:5px;margin-top:10px;font-size:11px;font-weight:700;text-decoration:none;display:inline-flex}.journey-stop__all:hover{color:#fff}.journey-live{z-index:7;background:#0d3a36e6;border:1px solid #6fbf8f59;border-radius:6px;align-items:center;gap:8px;padding:9px 11px;font-size:12px;display:flex;position:absolute;top:100px;left:18px}.journey-live a{color:#d9fff0;align-items:center;gap:4px;display:inline-flex}.journey-message{z-index:8;background:#091828eb;border-radius:4px;margin:0;padding:8px 12px;font-size:12px;position:absolute;bottom:84px;right:18px}@media (width<=640px){.student-main:has(.journey-home){padding-top:0}.journey-home{height:calc(100vh - 48px);min-height:500px}.journey-hud{padding:12px 12px 72px;display:block}.journey-stats{gap:5px;margin-top:9px}.journey-stats span{flex:1;min-width:0;padding:5px}.journey-stop{width:auto;max-height:28vh;bottom:196px;left:10px;right:10px}.journey-task-link{top:132px;right:10px}.journey-review-card{grid-template-columns:auto minmax(0,1fr) auto;width:auto;padding:10px 12px;bottom:10px;left:10px;right:10px}.journey-review-card>strong{font-size:24px}.journey-goal-card{width:auto;padding:10px 12px;bottom:80px;left:10px;right:10px}.journey-goal-card p{margin-top:5px}.journey-goal-card>small{margin-bottom:6px}.journey-goal-card>strong{margin-top:5px}.journey-certificate-card{width:auto;top:106px;left:14px;right:14px}.journey-live{top:140px;left:10px}}.teacher-app{background:var(--bg);min-height:100dvh}.teacher-appbar{z-index:50;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 94%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);height:62px;position:sticky;top:0}.teacher-appbar__inner{justify-content:space-between;align-items:center;gap:20px;width:min(1440px,100% - 32px);height:100%;margin:0 auto;display:flex}.teacher-mobile-toggle{border-radius:var(--radius);width:38px;height:38px;color:var(--ink);background:0 0;border:0;place-items:center;padding:0;display:none}.teacher-frame{grid-template-columns:216px minmax(0,1fr);width:min(1440px,100%);min-height:calc(100dvh - 62px);margin:0 auto;display:grid}.teacher-nav{border-right:1px solid var(--line);background:var(--surface);flex-direction:column;justify-content:space-between;align-self:start;gap:30px;height:calc(100dvh - 62px);padding:25px 16px 22px;display:flex;position:sticky;top:62px;overflow-y:auto}.teacher-nav nav{gap:3px;display:grid}.teacher-nav nav>p{color:var(--ink-muted);margin:0 9px 9px;font-size:10px;font-weight:760}.teacher-nav a{min-height:40px;color:var(--ink-soft);border-radius:5px;grid-template-columns:23px minmax(0,1fr) auto;align-items:center;gap:7px;padding:7px 9px;font-size:13px;font-weight:650;text-decoration:none;transition:background .15s,color .15s;display:grid}.teacher-nav a:hover{background:var(--surface-muted);color:var(--ink)}.teacher-nav a.is-active{background:var(--accent-soft);color:var(--accent-ink)}.teacher-nav a small{color:var(--ink-muted);font-family:var(--font-mono);font-size:8px;font-weight:700}.teacher-main{min-width:0;padding:35px clamp(24px,4vw,58px) 80px}.teacher-pagehead{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:28px;min-height:102px;padding-bottom:25px;display:flex}.teacher-pagehead h1,.teacher-pagehead p,.teacher-pagehead span,.teacher-section h2,.teacher-section p{margin:0}.teacher-pagehead>div:first-child>p,.teacher-student-title>div>p{color:var(--accent);font-size:11px;font-weight:760}.teacher-pagehead h1{letter-spacing:0;margin-top:4px;font-size:31px;line-height:1.16}.teacher-pagehead>div:first-child>span,.teacher-student-title>div>span{color:var(--ink-soft);margin-top:7px;font-size:13px;display:block}.teacher-pagehead__actions{flex-wrap:wrap;justify-content:end;gap:8px;display:flex}.teacher-pagehead__actions .button{min-height:39px}.teacher-kpis{border-bottom:1px solid var(--line);grid-template-columns:repeat(5,minmax(0,1fr));display:grid}.teacher-kpis>a,.teacher-kpis>div{min-width:0;color:var(--accent);align-items:center;gap:10px;padding:20px 16px;text-decoration:none;display:flex}.teacher-kpis>*+*{border-left:1px solid var(--line)}.teacher-kpis span{gap:1px;min-width:0;display:grid}.teacher-kpis strong{color:var(--ink);font-family:var(--font-mono);font-size:22px;line-height:1}.teacher-kpis small{color:var(--ink-muted);white-space:nowrap;font-size:10px}.teacher-kpis>a:hover{background:var(--accent-soft)}.teacher-inventory{background:var(--line);border:1px solid var(--line);grid-template-columns:1.15fr .8fr 1.2fr;gap:1px;margin-top:25px;display:grid}.teacher-inventory a{background:var(--surface);min-width:0;min-height:62px;color:var(--ink-soft);align-items:center;gap:10px;padding:13px 15px;font-size:12px;text-decoration:none;display:flex}.teacher-inventory a:hover{background:var(--surface-muted)}.teacher-inventory a>span{flex:1;min-width:0}.teacher-inventory strong{color:var(--ink);font-family:var(--font-mono)}.teacher-inventory small{color:var(--ink-muted);white-space:nowrap;font-size:9px}.teacher-section{margin-top:38px;scroll-margin-top:80px}.teacher-section>header{border-bottom:1px solid var(--line-strong);justify-content:space-between;align-items:end;gap:20px;min-height:50px;padding-bottom:13px;display:flex}.teacher-section>header h2{letter-spacing:0;font-size:18px}.teacher-section>header p{color:var(--ink-muted);margin-top:4px;font-size:11px}.teacher-section>header>a{color:var(--accent);align-items:center;gap:5px;padding:8px 0;font-size:11px;font-weight:720;text-decoration:none;display:inline-flex}.teacher-table-wrap{max-width:100%;overflow-x:auto}.teacher-table{border-collapse:collapse;width:100%;min-width:760px;font-size:12px}.teacher-table td,.teacher-table th{border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;padding:12px 13px}.teacher-table th{color:var(--ink-muted);white-space:nowrap;font-size:9px;font-weight:760}.teacher-table tbody tr{transition:background .14s}.teacher-table tbody tr:hover{background:var(--surface)}.teacher-table td>small,.teacher-table td>strong{display:block}.teacher-table td>small{color:var(--ink-muted);margin-top:3px;font-size:9px}.teacher-table .is-number{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.teacher-table td:last-child{width:46px;padding-inline:5px}.teacher-table td:last-child .icon-button{width:34px;height:34px}.teacher-table--students td:first-child>a{align-items:center;gap:10px;text-decoration:none;display:flex}.teacher-table--students td:first-child>a>span:last-child{min-width:0;display:grid}.teacher-avatar{background:var(--accent-soft);width:31px;height:31px;color:var(--accent-ink);border-radius:5px;flex:0 0 31px;place-items:center;font-size:12px;font-weight:760;display:inline-grid}.teacher-avatar--large{flex-basis:50px;width:50px;height:50px;font-size:18px}.teacher-status{background:var(--surface-muted);min-height:24px;color:var(--ink-soft);white-space:nowrap;border-radius:3px;align-items:center;padding:0 7px;font-size:9px;font-weight:740;display:inline-flex}.teacher-status.is-active{background:var(--warning-soft);color:var(--warning)}.teacher-status.is-done{background:var(--accent-soft);color:var(--accent-ink)}.teacher-search{border:1px solid var(--line);background:var(--surface);width:min(250px,44vw);height:36px;color:var(--ink-muted);border-radius:4px;align-items:center;gap:8px;padding:0 10px;display:flex}.teacher-search input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0;outline:0;font-size:11px}.teacher-empty{border-bottom:1px solid var(--line);min-height:130px;color:var(--ink-muted);text-align:center;align-content:center;place-items:center;gap:5px;display:grid}.teacher-empty strong{color:var(--ink);font-size:13px}.teacher-empty span{font-size:10px}.teacher-empty--compact{-moz-column-gap:9px;text-align:left;grid-template-columns:auto auto;column-gap:9px;min-height:88px}.teacher-empty--compact svg{grid-row:span 2}.teacher-action-list>a{border-bottom:1px solid var(--line);grid-template-columns:28px minmax(0,1fr) auto 20px;align-items:center;gap:9px;min-height:58px;padding:10px 12px;text-decoration:none;display:grid}.teacher-action-list>a:hover{background:var(--surface)}.teacher-action-list span{gap:3px;min-width:0;display:grid}.teacher-action-list strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.teacher-action-list small{color:var(--ink-muted);font-size:9px}.teacher-action-list b{color:var(--warning);font-size:10px}.teacher-breadcrumb{color:var(--ink-muted);align-items:center;gap:8px;margin-bottom:18px;font-size:10px;display:flex}.teacher-breadcrumb a{align-items:center;gap:4px;text-decoration:none;display:inline-flex}.teacher-breadcrumb a:hover{color:var(--accent)}.teacher-pagehead--student{align-items:center}.teacher-student-title{align-items:center;gap:14px;display:flex}.teacher-student-title h1{margin-top:1px}.teacher-kpis--student{grid-template-columns:repeat(4,minmax(0,1fr))}.teacher-student-meta{border:1px solid var(--line);background:var(--line);grid-template-columns:repeat(4,minmax(0,1fr)) auto;align-items:center;gap:1px;margin-top:24px;display:grid}.teacher-student-meta>a,.teacher-student-meta>div{background:var(--surface);align-content:center;gap:4px;min-height:58px;padding:10px 12px;display:grid}.teacher-student-meta small{color:var(--ink-muted);font-size:9px}.teacher-student-meta span{align-items:center;gap:5px;font-size:11px;display:flex}.teacher-student-meta>a{color:var(--accent);white-space:nowrap;grid-auto-flow:column;align-items:center;font-size:10px;font-weight:720;text-decoration:none}.teacher-nav-backdrop{display:none}@media (width<=1100px){.teacher-frame{grid-template-columns:190px minmax(0,1fr)}.teacher-main{padding-inline:25px}.teacher-kpis strong{font-size:19px}.teacher-kpis>a,.teacher-kpis>div{padding-inline:10px}.teacher-inventory{grid-template-columns:1fr}.teacher-student-meta{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-student-meta>a{grid-column:span 2}}@media (width<=760px){.teacher-appbar__inner{justify-content:start;gap:8px;width:min(100% - 22px,1440px)}.teacher-mobile-toggle{display:grid}.teacher-account{margin-left:auto}.teacher-account>span:first-child{display:none}.teacher-frame{display:block}.teacher-nav{z-index:60;width:min(280px,84vw);height:calc(100dvh - 62px);box-shadow:var(--shadow);transition:transform .18s;position:fixed;inset:62px auto 0 0;transform:translate(-102%)}.teacher-nav.is-open{transform:translate(0)}.teacher-nav-backdrop{z-index:55;background:#0b140e6b;border:0;display:block;position:fixed;inset:62px 0 0}.teacher-main{padding:24px 14px 64px}.teacher-pagehead{flex-direction:column;align-items:start;min-height:0}.teacher-pagehead h1{font-size:27px}.teacher-pagehead__actions{grid-template-columns:repeat(2,minmax(0,1fr));width:100%;display:grid}.teacher-pagehead__actions .button{width:100%;min-width:0;padding-inline:12px}.teacher-pagehead__actions>:last-child:nth-child(odd){grid-column:1/-1}.teacher-kpis,.teacher-kpis--student{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-kpis>*+*{border-left:0}.teacher-kpis>:nth-child(2n){border-left:1px solid var(--line)}.teacher-kpis>*{border-bottom:1px solid var(--line)}.teacher-kpis>:last-child{grid-column:1/-1}.teacher-kpis--student>:last-child{grid-column:auto}.teacher-inventory{margin-top:18px}.teacher-section{margin-top:30px}.teacher-section>header{align-items:start}.teacher-search{width:150px}.teacher-student-title{align-items:start}.teacher-pagehead--student .teacher-pagehead__actions{grid-template-columns:repeat(3,minmax(0,1fr))}.teacher-pagehead--student .teacher-pagehead__actions .button{gap:6px;padding-inline:8px}.teacher-pagehead--student .button--primary{grid-column:1/-1}.teacher-student-meta{grid-template-columns:1fr}.teacher-student-meta>a{grid-column:auto}}.exercise-page{background:var(--bg);min-height:100dvh}.exercise-page.is-exam{background:#eef0f2}.exercise-page.is-exam .exercise-progress{background:#cfd3d7}.exercise-page.is-exam .exercise-progress span{background:#9d292f}.exercise-page.is-exam .exercise-topbar{color:#fff;background:#191d21f7;border-bottom-color:#31363b}.exercise-page.is-exam .exercise-topbar__title span{color:#b9c0c6}.exercise-page.is-exam .exercise-topbar .icon-button{color:#fff}.exercise-page.is-exam .exercise-draft{color:#cbd0d4;border-color:#555d64}.exercise-page.is-exam .exercise-clock{color:#fff;background:#9d292f;border-color:#9d292f}.exercise-page.is-exam .exercise-shell{grid-template-columns:minmax(0,820px) 250px}.exercise-page.is-exam .exercise-main{background:#fff;border:1px solid #cfd3d7;padding:44px 52px 62px;box-shadow:0 8px 24px #181e2314}.exercise-page.is-exam .exercise-intro{border-bottom:2px solid #262b2f}.exercise-page.is-exam .exercise-intro p,.exercise-page.is-exam .exercise-intro>svg{color:#9d292f}.exercise-page.is-exam .exercise-question>header>span{color:#fff;background:#2d3236;border-color:#2d3236}.exercise-page.is-exam .exercise-question.is-answered>header>span{color:#fff;background:#9d292f;border-color:#9d292f}.exercise-page.is-exam .exercise-question>header svg{color:#9d292f}.exercise-page.is-exam .exercise-nav{border-top-color:#9d292f}.exercise-page.is-exam .exercise-nav>header svg,.exercise-page.is-exam .exercise-nav>p{color:#9d292f}.exam-entry{background:#dfe3e6;place-items:center;min-height:calc(100dvh - 68px);padding:40px 20px 64px;display:grid}.exam-entry__sheet{background:#fff;border:1px solid #bbc1c6;width:min(660px,100%);padding:34px 38px;box-shadow:0 18px 50px #181e232b}.exam-entry__sheet>header{border-bottom:2px solid #282d31;align-items:center;gap:14px;padding-bottom:22px;display:flex}.exam-entry__sheet>header>span{color:#fff;background:#9d292f;flex:none;place-items:center;width:46px;height:46px;display:grid}.exam-entry__sheet h1,.exam-entry__sheet h2,.exam-entry__sheet p{margin:0}.exam-entry__sheet>header p{color:#9d292f;font-size:9px;font-weight:800}.exam-entry__sheet>header h1{letter-spacing:0;margin-top:3px;font-size:24px}.exam-entry__identity{gap:4px;padding:24px 0 20px;display:grid}.exam-entry__identity strong{font-size:19px}.exam-entry__identity span{color:var(--ink-muted);font-size:11px}.exam-entry__metrics{border-block:1px solid #d5d9dc;grid-template-columns:repeat(3,1fr);margin:0;display:grid}.exam-entry__metrics>div{gap:5px;padding:16px 14px;display:grid}.exam-entry__metrics>div+div{border-left:1px solid #d5d9dc}.exam-entry__metrics dt{color:var(--ink-muted);font-size:9px}.exam-entry__metrics dd{margin:0;font-size:16px;font-weight:750}.exam-entry__types{padding:23px 0 19px}.exam-entry__types h2{font-size:12px}.exam-entry__types>div{flex-wrap:wrap;gap:7px;margin-top:10px;display:flex}.exam-entry__types span{border:1px solid #d5d9dc;gap:2px;min-width:130px;padding:9px 11px;display:grid}.exam-entry__types b{font-size:11px}.exam-entry__types small{color:var(--ink-muted);font-size:9px}.exam-entry__rules{color:#50575d;background:#f2f3f4;gap:8px;margin:0;padding:16px 18px 16px 34px;font-size:11px;line-height:1.6;display:grid}.exam-entry__sheet>footer{justify-content:flex-end;gap:9px;margin-top:25px;display:flex}.exercise-progress{z-index:50;background:var(--line);height:3px;position:fixed;inset:0 0 auto}.exercise-progress span{background:var(--accent);height:100%;transition:width .22s;display:block}.exercise-topbar{z-index:40;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 94%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:14px;min-height:68px;padding:0 max(20px,50% - 590px);display:grid;position:sticky;top:0}.exercise-topbar__title{gap:2px;min-width:0;display:grid}.exercise-topbar__title strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.exercise-topbar__title span{color:var(--ink-muted);font-size:10px}.exercise-topbar__actions{align-items:center;gap:8px;display:flex}.exercise-clock,.exercise-draft{border:1px solid var(--line);min-height:30px;color:var(--ink-muted);border-radius:4px;align-items:center;gap:5px;padding:0 8px;font-size:10px;display:inline-flex}.exercise-clock{color:var(--accent);font-family:var(--font-mono);font-weight:750}.exercise-clock.is-low{border-color:color-mix(in srgb,var(--danger) 35%,var(--line));color:var(--danger)}.exercise-page.is-exam .exercise-clock,.exercise-page.is-exam .exercise-clock.is-low{color:#fff;background:#9d292f;border-color:#9d292f}.exercise-shell{grid-template-columns:minmax(0,820px) 250px;align-items:start;gap:64px;width:min(1180px,100% - 40px);margin:0 auto;padding:45px 0 90px;display:grid}.exercise-main{min-width:0}.exercise-intro{border-bottom:1px solid var(--line-strong);justify-content:space-between;align-items:start;gap:25px;padding-bottom:31px;display:flex}.exercise-intro h1,.exercise-intro p,.exercise-intro span{margin:0}.exercise-intro p{color:var(--accent);font-size:10px;font-weight:800}.exercise-intro h1{letter-spacing:0;overflow-wrap:anywhere;margin-top:6px;font-size:36px;line-height:1.2}.exercise-intro span{color:var(--ink-muted);margin-top:9px;font-size:11px;display:block}.exercise-intro>svg{color:var(--accent);flex:none}.exercise-intro .exercise-grade-mark{color:#9d292f;min-width:64px;height:52px;font-family:var(--font-mono);border:3px solid #9d292f;flex:none;place-items:center;margin-top:0;padding:0 8px;font-size:28px;font-weight:850;line-height:1;display:inline-grid}.exercise-exam-note{border-left:3px solid var(--warning);background:var(--warning-soft);color:var(--warning);align-items:center;gap:11px;margin-top:22px;padding:13px 15px;display:flex}.exercise-exam-note div{gap:2px;display:grid}.exercise-exam-note strong{font-size:12px}.exercise-exam-note span{font-size:10px}.exercise-score{border:1px solid var(--line-strong);background:var(--surface);margin-top:25px;padding:24px}.exercise-score>div:first-child{align-items:baseline;gap:11px;display:flex}.exercise-score>div:first-child p{color:var(--accent);margin:0 auto 0 0;font-size:10px;font-weight:800}.exercise-score>div:first-child strong{font-size:34px}.exercise-score>div:first-child span{color:var(--accent);font-family:var(--font-mono);font-size:12px}.exercise-score>p{color:var(--ink-muted);margin:14px 0 0;font-size:11px}.exercise-score>p.is-late{color:var(--danger)}.exercise-grade{border-top:1px solid var(--line);align-items:center;gap:18px;margin-top:18px;padding-top:17px;display:flex}.exercise-grade>span{gap:2px;display:grid}.exercise-grade small{color:var(--ink-muted);font-size:9px}.exercise-grade b{font-family:var(--font-mono);font-size:22px}.exercise-grade em,.report-grade em{border:1px solid var(--accent);color:var(--accent);margin-left:auto;padding:5px 8px;font-size:10px;font-style:normal;font-weight:800}.exercise-grade em.is-failed,.report-grade em.is-failed{border-color:var(--danger);color:var(--danger)}.exercise-subscores{flex-wrap:wrap;gap:7px;margin-top:17px;display:flex}.exercise-subscores span{background:var(--surface-muted);gap:3px;min-width:130px;padding:9px 11px;display:grid}.exercise-subscores small{color:var(--ink-muted);font-size:9px}.exercise-subscores strong{font-family:var(--font-mono);font-size:13px}.exercise-description{border-left:3px solid var(--line-strong);background:var(--surface-muted);color:var(--ink-soft);white-space:pre-wrap;margin-top:28px;padding:18px 20px;font-size:13px;line-height:1.75}.exercise-section-heading{border-top:2px solid var(--ink);border-bottom:1px solid var(--line);margin-top:52px;padding:24px 0 18px}.exercise-section-heading>h2,.exercise-section-heading>p{margin:0}.exercise-section-heading>p{color:var(--accent);font-family:var(--font-mono);font-size:10px;font-weight:800}.exercise-section-heading>h2{letter-spacing:0;margin-top:5px;font-size:24px}.exercise-section-heading>div{color:var(--ink-soft);white-space:pre-wrap;margin-top:11px;font-size:12px;line-height:1.7}.exercise-question{border-bottom:1px solid var(--line-strong);margin-top:30px;padding:0 0 34px;scroll-margin-top:90px}.exercise-question>header{grid-template-columns:39px minmax(0,1fr);align-items:center;gap:10px;margin-bottom:18px;display:grid}.exercise-question>header>span{border:1px solid var(--line-strong);width:36px;height:30px;color:var(--ink-muted);font-family:var(--font-mono);border-radius:3px;place-items:center;font-size:10px;display:grid}.exercise-question.is-answered>header>span{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.exercise-question>header>div{justify-content:space-between;align-items:center;gap:12px;display:flex}.exercise-question>header p{color:var(--ink-muted);margin:0;font-size:10px;font-weight:750}.exercise-question>header svg{color:var(--accent)}.exercise-prompt{letter-spacing:0;white-space:pre-wrap;margin:0 0 18px;font-size:17px;font-weight:650;line-height:1.7}.exercise-cloze{color:var(--ink);font-family:Georgia,Times New Roman,serif;font-size:17px;line-height:1.85}.exercise-cloze__text{white-space:pre-wrap}.exercise-gap{border-left:2px solid var(--line-strong);font-family:var(--font-sans);margin:11px 0 17px;padding-left:15px;display:block}.exercise-gap input,.exercise-gap select,.exercise-gap textarea,.exercise-shortanswer input,.exercise-writing textarea{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-strong);width:100%;color:var(--ink)}.exercise-gap textarea{resize:vertical;min-height:82px;padding:12px 13px;font-size:13px;line-height:1.6;display:block}.exercise-gap input,.exercise-gap select,.exercise-shortanswer input{height:46px;padding:0 13px;font-size:13px}.exercise-gap.is-correct input,.exercise-gap.is-correct select,.exercise-gap.is-correct textarea{border-color:var(--accent);background:var(--accent-soft)}.exercise-gap.is-wrong input,.exercise-gap.is-wrong select,.exercise-gap.is-wrong textarea{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 8%,var(--surface))}.exercise-gap>small{color:var(--danger);font-family:var(--font-sans);margin-top:7px;font-size:10px;line-height:1.5;display:block}.exercise-options{gap:7px;display:grid}.exercise-options label{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);cursor:pointer;grid-template-columns:25px minmax(0,1fr) 19px;align-items:center;gap:10px;min-height:48px;padding:8px 12px;display:grid}.exercise-options label>input{opacity:0;pointer-events:none;position:absolute}.exercise-options label>span{border:1px solid var(--line-strong);width:24px;height:24px;color:var(--ink-muted);font-family:var(--font-mono);border-radius:50%;place-items:center;font-size:9px;display:grid}.exercise-options label.is-correct,.exercise-options label.is-selected{border-color:var(--accent);background:var(--accent-soft)}.exercise-options label.is-correct{color:var(--accent-ink)}.exercise-options label.is-wrong{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 9%,var(--surface))}.exercise-writing{position:relative}.exercise-writing textarea{resize:vertical;min-height:200px;padding:15px;font-size:14px;line-height:1.75}.exercise-writing>span{color:var(--ink-muted);font-family:var(--font-mono);text-align:right;margin-top:5px;font-size:9px;display:block}.exercise-writing>p{color:var(--ink-muted);margin:11px 0 0;font-size:11px}.exercise-teacher-note{border-left:3px solid var(--accent);background:var(--accent-soft);margin-top:13px;padding:14px}.exercise-teacher-note strong{color:var(--accent);font-size:11px}.exercise-teacher-note p{margin:6px 0 0;font-size:12px;line-height:1.6}.exercise-shortanswer p{color:var(--danger);margin:7px 0 0;font-size:10px}.exercise-upload{align-items:center;gap:12px;display:flex}.exercise-upload input{display:none}.exercise-upload>span{color:var(--ink-muted);overflow-wrap:anywhere;font-size:11px}.exercise-media{margin:20px 0}.exercise-media video{background:#090b0a;max-height:420px}.exercise-media audio,.exercise-media video{width:min(100%,680px);display:block}.exercise-media>p{color:var(--ink-muted);align-items:center;gap:6px 10px;margin:6px 0 0;font-size:10px;display:flex}.exercise-media.is-exhausted{opacity:.64}.exercise-submit{border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);justify-content:space-between;align-items:center;gap:24px;margin-top:46px;padding:25px 0;display:flex}.exercise-submit>div{gap:3px;display:grid}.exercise-submit strong{font-size:13px}.exercise-submit span{color:var(--ink-muted);font-size:10px}.exercise-nav{border-top:2px solid var(--accent);background:var(--surface);box-shadow:var(--shadow);position:sticky;top:98px}.exercise-nav>header{border-bottom:1px solid var(--line);align-items:center;gap:9px;padding:17px;display:flex}.exercise-nav>header svg{color:var(--accent)}.exercise-nav>header div{flex:1;justify-content:space-between;align-items:baseline;gap:8px;display:flex}.exercise-nav>header strong{font-size:12px}.exercise-nav>header span{color:var(--ink-muted);font-family:var(--font-mono);font-size:9px}.exercise-nav>div{grid-template-columns:repeat(5,1fr);gap:6px;padding:17px;display:grid}.exercise-nav>div button{aspect-ratio:1;border:1px solid var(--line);background:var(--bg);color:var(--ink-muted);font-family:var(--font-mono);cursor:pointer;border-radius:3px;font-size:10px}.exercise-nav>div button.is-done{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.exercise-nav>p{border-top:1px solid var(--line);color:var(--accent);font-family:var(--font-mono);align-items:center;gap:6px;margin:0;padding:13px 17px;font-size:10px;display:flex}.exercise-disabled,.exercise-submitted-hidden{min-height:calc(100dvh - 68px)}.spin{animation:.7s linear infinite exercise-spin}@keyframes exercise-spin{to{transform:rotate(1turn)}}@media (width<=920px){.exercise-page.is-exam .exercise-shell,.exercise-shell{grid-template-columns:minmax(0,1fr)}.exercise-nav{display:none}}@media (width<=700px){.exercise-topbar{grid-template-columns:38px minmax(0,1fr) auto;padding-inline:12px}.exercise-draft,.exercise-topbar .reader-classic-link{display:none}.exercise-clock{padding-inline:6px}.exercise-shell{width:min(100% - 28px,1180px);padding-top:28px}.exercise-intro h1{font-size:30px}.exercise-intro>svg{width:30px}.exercise-question{margin-top:25px;padding-bottom:29px}.exercise-cloze{font-size:16px}.exercise-gap{padding-left:10px}.exercise-submit{flex-direction:column;align-items:stretch}.exercise-submit .button{width:100%}.exercise-upload{flex-direction:column;align-items:stretch}.exercise-upload .button{width:100%}.exercise-page.is-exam .exercise-main{border-inline:0;padding:30px 20px 45px}.exam-entry{place-items:start center;padding:20px 12px 42px}.exam-entry__sheet{padding:24px 20px}.exam-entry__metrics{grid-template-columns:1fr}.exam-entry__metrics>div{grid-template-columns:1fr auto;align-items:center}.exam-entry__metrics>div+div{border-top:1px solid #d5d9dc;border-left:0}.exam-entry__sheet>footer{flex-direction:column-reverse;align-items:stretch}.exam-entry__sheet>footer .button{width:100%}}.teacher-page{background:var(--bg);min-height:100dvh}.teacher-header{z-index:45;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 94%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);height:68px;position:sticky;top:0}.teacher-header__inner{justify-content:space-between;align-items:center;gap:24px;width:min(1180px,100% - 40px);height:100%;margin:0 auto;display:flex}.teacher-account{min-width:0;color:var(--ink-soft);align-items:center;gap:9px;font-size:11px;display:flex}.teacher-account img,.teacher-account__initial{border-radius:50%;flex:0 0 31px;width:31px;height:31px}.teacher-account img{-o-object-fit:cover;object-fit:cover}.teacher-account__initial{background:var(--accent-soft);color:var(--accent);place-items:center;font-size:11px;font-weight:800;display:grid}.teacher-back{color:var(--ink);align-items:center;gap:8px;font-size:12px;font-weight:700;text-decoration:none;display:inline-flex}.teacher-back:hover{color:var(--accent)}.grading-detail-shell,.grading-shell{width:min(1180px,100% - 40px);margin:0 auto;padding:48px 0 92px}.grading-detail-intro,.grading-intro{border-bottom:1px solid var(--line-strong);justify-content:space-between;align-items:start;gap:28px;padding-bottom:31px;display:flex}.grading-detail-intro h1,.grading-detail-intro p,.grading-detail-intro span,.grading-intro h1,.grading-intro p,.grading-intro span{margin:0}.grading-detail-intro p,.grading-intro p{color:var(--accent);font-family:var(--font-mono);font-size:10px;font-weight:800}.grading-detail-intro h1,.grading-intro h1{letter-spacing:0;margin-top:7px;font-size:37px;line-height:1.18}.grading-detail-intro span,.grading-intro span{color:var(--ink-muted);margin-top:9px;font-size:12px;display:block}.grading-intro>svg{color:var(--accent);flex:none}.grading-metrics{border-bottom:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.grading-metrics>div{border-right:1px solid var(--line);align-items:center;gap:14px;min-height:92px;padding:19px 24px;display:flex}.grading-metrics>div:first-child{padding-left:0}.grading-metrics>div:last-child{border-right:0}.grading-metrics svg{color:var(--accent)}.grading-metrics span{gap:1px;display:grid}.grading-metrics strong{font-family:var(--font-mono);font-size:23px}.grading-metrics small{color:var(--ink-muted);font-size:10px}.grading-tabs{border-bottom:1px solid var(--line);align-items:center;gap:2px;margin-top:36px;display:flex}.grading-tabs button{min-height:42px;color:var(--ink-muted);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;align-items:center;gap:8px;padding:0 15px;font-size:12px;font-weight:720;display:inline-flex}.grading-tabs button.is-active{border-color:var(--accent);color:var(--ink)}.grading-tabs span{background:var(--surface-muted);min-width:21px;height:20px;color:var(--ink-muted);font-family:var(--font-mono);border-radius:10px;place-items:center;font-size:9px;display:grid}.grading-list,.grading-row{border-bottom:1px solid var(--line)}.grading-row{min-height:86px;color:inherit;grid-template-columns:42px minmax(0,1fr) 95px 76px 18px;align-items:center;gap:14px;padding:13px 8px;text-decoration:none;transition:background .14s;display:grid}.grading-row:last-child{border-bottom:0}.grading-row:hover{background:var(--surface-muted)}.grading-row__icon{border:1px solid var(--line);border-radius:var(--radius);width:38px;height:38px;color:var(--accent);place-items:center;display:grid}.grading-row__main{gap:5px;min-width:0;display:grid}.grading-row__main strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.grading-row__main small,.grading-row__score small{color:var(--ink-muted);font-size:10px}.grading-row__score{gap:3px;display:grid}.grading-row__score strong{font-family:var(--font-mono);font-size:12px}.grading-row__state{border:1px solid color-mix(in srgb,var(--warning) 35%,var(--line));min-height:26px;color:var(--warning);border-radius:3px;place-items:center;padding:0 7px;font-size:9px;font-weight:760;display:inline-grid}.grading-row__state.is-done{border-color:color-mix(in srgb,var(--accent) 35%,var(--line));color:var(--accent)}.grading-row>svg{color:var(--ink-muted)}.grading-empty{text-align:center;align-content:center;place-items:center;gap:8px;min-height:310px;display:grid}.grading-empty svg{color:var(--accent)}.grading-empty h2,.grading-empty p{margin:0}.grading-empty h2{letter-spacing:0;font-size:19px}.grading-empty p{color:var(--ink-muted);font-size:11px}.grading-detail-actions{align-items:center;gap:7px;display:flex}.grading-summary{border:1px solid var(--line);background:var(--surface);grid-template-columns:repeat(3,minmax(0,1fr));margin-top:24px;display:grid}.grading-summary>div{border-right:1px solid var(--line);align-content:center;gap:5px;min-height:82px;padding:15px 20px;display:grid}.grading-summary>div:last-child{border-right:0}.grading-summary small{color:var(--ink-muted);font-size:9px}.grading-summary strong{font-family:var(--font-mono);font-size:18px}.grading-summary strong.is-pending{color:var(--warning)}.grading-documents{border:1px solid var(--line);background:var(--surface-soft);justify-content:space-between;align-items:center;gap:24px;margin-top:12px;padding:14px 16px;display:flex}.grading-documents>div:first-child{align-items:center;gap:10px;min-width:0;display:flex}.grading-documents>div:first-child>svg{color:var(--accent);flex:none}.grading-documents span{gap:3px;min-width:0;display:grid}.grading-documents span strong{font-size:13px}.grading-documents span small,.grading-documents__actions>small{color:var(--ink-muted);font-size:10px}.grading-documents__actions{justify-content:flex-end;align-items:center;gap:8px;display:flex}.grading-documents__actions>small{text-align:right;max-width:240px}.grading-detail-layout{grid-template-columns:minmax(0,1fr) 250px;align-items:start;gap:62px;margin-top:44px;display:grid}.grading-paper{min-width:0}.grading-question{border-bottom:1px solid var(--line-strong);margin-bottom:34px;padding:0 0 36px}.grading-question>header{grid-template-columns:38px minmax(0,1fr);align-items:center;gap:10px;margin-bottom:17px;display:grid}.grading-question>header>span{border:1px solid var(--line-strong);width:35px;height:30px;color:var(--ink-muted);font-family:var(--font-mono);border-radius:3px;place-items:center;font-size:9px;display:grid}.grading-question>header>div{justify-content:space-between;align-items:center;gap:12px;display:flex}.grading-question>header p{color:var(--ink-muted);margin:0;font-size:10px;font-weight:760}.grading-question>h2{letter-spacing:0;white-space:pre-wrap;margin:0 0 18px;font-size:16px;font-weight:650;line-height:1.75}.grading-status{border:1px solid color-mix(in srgb,var(--warning) 35%,var(--line));border-radius:3px;align-items:center;gap:4px;min-height:24px;padding:0 7px;font-weight:750;color:var(--warning)!important;margin:0!important;font-size:9px!important;display:inline-flex!important}.grading-status--done{border-color:color-mix(in srgb,var(--accent) 35%,var(--line));color:var(--accent)!important}.grading-answer-list{gap:7px;display:grid}.grading-answer-list>div,.grading-objective-answer{border-left:3px solid var(--line-strong);background:var(--surface-muted);padding:13px 15px}.grading-answer-list>div.is-correct,.grading-objective-answer.is-correct{border-color:var(--accent)}.grading-answer-list>div.is-wrong,.grading-objective-answer.is-wrong{border-color:var(--danger)}.grading-answer-list span,.grading-objective-answer>span{color:var(--ink-muted);font-size:9px;font-weight:800}.grading-answer-list .is-correct span,.grading-objective-answer.is-correct>span{color:var(--accent)}.grading-answer-list .is-wrong span,.grading-objective-answer.is-wrong>span{color:var(--danger)}.grading-answer-list p,.grading-objective-answer p{margin:6px 0 0;font-size:12px;line-height:1.6}.grading-answer-list strong,.grading-objective-answer>small{color:var(--ink-muted);font-size:10px}.grading-objective-answer>small{margin-top:5px;display:block}.grading-override{cursor:pointer;align-items:center;gap:8px;width:fit-content;margin-top:13px;font-size:11px;font-weight:720;display:flex}.grading-override input{opacity:0;pointer-events:none;position:absolute}.grading-override>span{border:1px solid var(--line-strong);color:#0000;border-radius:3px;place-items:center;width:24px;height:24px;display:grid}.grading-override input:checked+span{border-color:var(--accent);background:var(--accent);color:#fff}.grading-overridden{color:var(--accent);align-items:center;gap:6px;display:flex}.grading-subjective-answer{gap:19px;display:grid}.grading-submission{border-left:3px solid var(--accent);background:var(--surface-muted);padding:17px 18px}.grading-submission>small{color:var(--accent);font-size:9px;font-weight:800}.grading-submission>p{white-space:pre-wrap;margin:9px 0 0;font-family:Georgia,Times New Roman,serif;font-size:16px;line-height:1.85}.grading-submission>div{justify-content:space-between;align-items:center;gap:15px;margin-top:9px;display:flex}.grading-submission>div strong{overflow-wrap:anywhere;font-size:12px}.grading-verdicts{border:0;flex-wrap:wrap;gap:7px;margin:0;padding:0;display:flex}.grading-verdicts legend{width:100%;color:var(--ink-muted);margin-bottom:1px;font-size:10px;font-weight:720}.grading-verdicts label{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);cursor:pointer;place-items:center;min-width:88px;min-height:39px;font-size:11px;font-weight:720;display:grid}.grading-verdicts label.is-selected{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-ink)}.grading-verdicts input{opacity:0;pointer-events:none;position:absolute}.grading-comment{gap:7px;display:grid}.grading-comment>span{color:var(--ink-muted);font-size:10px;font-weight:720}.grading-comment textarea{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-strong);width:100%;min-height:105px;color:var(--ink);resize:vertical;padding:12px 13px;font-size:13px;line-height:1.65}.grading-points{gap:7px;display:grid}.grading-points>span{color:var(--ink-muted);font-size:10px;font-weight:720}.grading-points>div{align-items:center;gap:10px;display:flex}.grading-points input{border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface-strong);width:120px;height:44px;color:var(--ink);padding:0 12px;font-size:16px;font-weight:750}.grading-points strong{font-size:12px}.grading-side{border-top:2px solid var(--accent);background:var(--surface);box-shadow:var(--shadow);padding:18px;position:sticky;top:96px}.grading-side>svg{color:var(--accent)}.grading-side h2,.grading-side p{margin:0}.grading-side h2{letter-spacing:0;margin-top:11px;font-size:15px}.grading-side p{color:var(--ink-muted);margin-top:7px;font-size:10px;line-height:1.65}.grading-side>div{gap:6px;margin-top:16px;display:grid}.grading-side>div span{background:var(--surface-muted);gap:3px;padding:9px;display:grid}.grading-side>div small{color:var(--ink-muted);font-size:8px}.grading-side>div strong{font-family:var(--font-mono);font-size:11px}.grading-savebar{z-index:30;border:1px solid var(--line);background:color-mix(in srgb,var(--surface-strong) 94%,transparent);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);justify-content:space-between;align-items:center;gap:20px;min-height:70px;margin-top:20px;padding:12px 16px;display:flex;position:sticky;bottom:0;box-shadow:0 -12px 32px #11231814}.grading-savebar>p,.grading-savebar>span{color:var(--ink-muted);margin:0;font-size:10px}.grading-savebar>p.is-success{color:var(--accent)}@media (width<=900px){.grading-detail-layout{grid-template-columns:minmax(0,1fr);gap:0}.grading-side{display:none}}@media (width<=700px){.grading-detail-shell,.grading-shell,.teacher-header__inner{width:min(100% - 28px,1180px)}.teacher-account>span:first-child{display:none}.grading-detail-shell,.grading-shell{padding-top:27px}.grading-detail-intro h1,.grading-intro h1{font-size:30px}.grading-metrics{grid-template-columns:1fr}.grading-metrics>div{border-right:0;border-bottom:1px solid var(--line);min-height:66px;padding:12px 0}.grading-metrics>div:last-child{border-bottom:0}.grading-row{grid-template-columns:38px minmax(0,1fr) auto 16px;gap:10px}.grading-row__score{display:none}.grading-row__state{min-width:60px}.grading-detail-intro{flex-direction:column}.grading-detail-actions{width:100%}.grading-detail-actions .button{flex:1}.grading-summary{grid-template-columns:1fr}.grading-summary>div{border-right:0;border-bottom:1px solid var(--line);min-height:64px}.grading-summary>div:last-child{border-bottom:0}.grading-documents{gap:12px}.grading-documents,.grading-documents__actions{flex-direction:column;align-items:stretch}.grading-documents__actions .button{width:100%}.grading-documents__actions>small{text-align:left;max-width:none}.grading-detail-layout{margin-top:31px}.grading-question>h2{font-size:15px}.grading-verdicts{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.grading-verdicts label{min-width:0}.grading-savebar,.grading-submission>div{flex-direction:column;align-items:stretch}.grading-savebar{padding:12px}.grading-savebar .button{width:100%}}.video-immersive,body.video-immersive-body{background:#000;overflow:hidden}.video-immersive{--video-sub-height:92px;--video-sub-bottom:104px;--video-bottom-space:calc(var(--video-sub-height) + var(--video-sub-bottom));z-index:100;color:#eee;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;position:fixed;inset:0}.video-immersive-canvas{inset:0 0 var(--video-bottom-space);position:absolute}.video-immersive-player{-o-object-fit:contain;object-fit:contain;cursor:pointer;background:#000;width:100%;height:100%;display:block;position:absolute;inset:0}.video-big-play{z-index:4;color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);cursor:pointer;background:#ffffff24;border:1.5px solid #ffffff59;border-radius:50%;place-items:center;width:88px;height:88px;padding-left:5px;transition:transform .16s,background .16s;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.video-big-play:hover{background:#ffffff38;transform:translate(-50%,-50%)scale(1.04)}.video-edge{z-index:3;color:#ffffffa6;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer;background:#00000052;border:1px solid #ffffff14;place-items:center;width:38px;height:56px;transition:opacity .2s,background .16s,color .16s;display:grid;position:absolute;top:50%;transform:translateY(-50%)}.video-edge:hover{color:#fff;background:#00000094}.video-edge--left{border-left:0;border-radius:0 8px 8px 0;left:0}.video-edge--right{border-right:0;border-radius:8px 0 0 8px;right:0}.video-corner-button{top:max(12px,env(safe-area-inset-top));z-index:6;color:#fff;cursor:pointer;background:#0000007a;border:0;border-radius:8px;place-items:center;width:38px;height:38px;text-decoration:none;transition:background .16s,transform .1s;display:grid;position:absolute}.video-corner-button:hover{background:#000000b3}.video-corner-button:active{transform:scale(.94)}.video-back{left:max(12px,env(safe-area-inset-left))}.video-menu-button,.video-quick-tools{right:max(12px,env(safe-area-inset-right))}.video-quick-tools{z-index:4;gap:8px;transition:opacity .2s;display:grid;position:absolute;top:50%;transform:translateY(-50%)}.video-quick-tools button{color:#ffffffdb;width:38px;height:38px;font-family:var(--font-mono);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer;background:#00000070;border:1px solid #ffffff2e;border-radius:50%;place-items:center;font-size:11px;font-weight:760;transition:background .15s,border-color .15s,transform .1s;display:grid}.video-quick-tools button:hover{background:#000000a8;border-color:#ffffff57}.video-quick-tools button:active{transform:scale(.94)}.video-quick-tools button.is-on{color:#fff;background:#e8a84ee0;border-color:#ffdca099}.video-immersive.controls-hidden .video-edge,.video-immersive.controls-hidden .video-listen-controls,.video-immersive.controls-hidden .video-quick-tools,.video-immersive.controls-hidden .video-timeline-bar{opacity:0;pointer-events:none}.video-immersive-subtitles{right:0;bottom:var(--video-sub-bottom);z-index:3;height:var(--video-sub-height);text-align:center;pointer-events:none;background:#000;flex-direction:column;justify-content:center;align-items:center;padding:8px 32px;display:flex;position:absolute;left:0}.video-immersive-subtitles p{margin:0}.video-immersive-sub-de{color:#eee;word-spacing:.15em;text-shadow:0 1px 3px #000000d9,0 2px 12px #0009;pointer-events:auto;max-width:min(1100px,92vw);font-size:28px;font-weight:400;line-height:1.45}.video-immersive-sub-zh{color:#ffffffa6;pointer-events:auto;font-size:17px;font-style:italic;line-height:1.5;margin-top:8px!important}.video-immersive-sub-de .reading-word{color:#eee;font:inherit;text-shadow:inherit;background:0 0;border-radius:3px;padding:0 2px}.video-immersive-sub-de .reading-word:after{display:none}.video-immersive-sub-de .reading-word--selected,.video-immersive-sub-de .reading-word:hover{box-shadow:none;color:#fff;background:#ffffff29}.video-immersive-sub-de .reading-word--unknown{color:#ff9a8b}.video-immersive-sub-de .reading-word--learning{color:#ffd166}.video-immersive-sub-de .reading-word--familiar{color:#8be78b}.video-immersive-sub-de .reading-word--known{color:#777}.video-immersive-sub-de .reading-word--inactive{color:#444;opacity:1;text-decoration:line-through}.video-listen-controls{z-index:4;pointer-events:none;justify-content:center;align-items:center;gap:8px;transition:opacity .2s;display:flex;position:absolute;bottom:54px;left:0;right:0}.video-listen-controls button{color:#f1f3f5;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:auto;cursor:pointer;background:#14141694;border:1px solid #ffffff2e;border-radius:999px;align-items:center;gap:5px;height:40px;padding:0 16px;font-size:13px;font-weight:650;transition:background .13s,transform .1s;display:inline-flex}.video-listen-controls button:hover{background:#282a2ec2}.video-listen-controls button:active{transform:scale(.96)}.video-listen-controls button.is-replay{background:#2f9e6f57;border-color:#5cae87}.video-timeline-bar{z-index:5;padding:8px 16px max(12px,env(safe-area-inset-bottom));background:#000000c7;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;transition:opacity .2s;display:grid;position:absolute;bottom:0;left:0;right:0}.video-time{color:#ffffffa6;font-family:var(--font-mono);gap:4px;font-size:11px;display:flex}.video-time i{color:#ffffff59;font-style:normal}.video-sentence-position{color:#ffffffa6;font-family:var(--font-mono);font-size:11px}.video-timeline{cursor:pointer;align-items:center;height:18px;display:flex;position:relative}.video-timeline:before{content:"";background:#ffffff29;right:0}.video-timeline:before,.video-timeline__fill{border-radius:2px;height:2px;position:absolute;left:0}.video-timeline__fill{pointer-events:none;background:#fff;transition:width 80ms linear}.video-timeline>i{pointer-events:none;background:#ffffff57;border-radius:2px;width:2px;height:8px;position:absolute;transform:translate(-1px)}.video-timeline>i.is-active{background:#ffc882;height:12px}.video-listen-gate{z-index:40;background:#00000038;justify-content:center;align-items:flex-end;display:flex;position:absolute;inset:0}.video-listen-gate__card{width:min(720px,100%);padding:20px 24px max(22px,env(safe-area-inset-bottom));color:var(--ink);background:#f8f9fb;border-radius:8px 8px 0 0;animation:.28s cubic-bezier(.18,.9,.24,1) videoGateIn;box-shadow:0 -10px 40px #00000057}@keyframes videoGateIn{0%{opacity:.45;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}.video-listen-gate__card header{color:#9a6617;justify-content:space-between;align-items:center;gap:12px;font-size:12px;font-weight:760;display:flex}.video-listen-gate__card header small{font-family:var(--font-mono);color:var(--ink-muted)}.video-listen-gate__card header .video-gate-timer{color:#9a6617;text-align:right;min-width:38px;font-size:13px}.video-listen-gate__card header .video-gate-timer.is-low{color:var(--danger);font-weight:800}.video-listen-gate__card h2{margin:10px 0 16px;font-size:19px;line-height:1.4}.video-listen-gate__options{gap:8px;display:grid}.video-listen-gate__options button{border:1.5px solid var(--line);min-height:48px;color:var(--ink);text-align:left;cursor:pointer;background:#f1f3f6;border-radius:7px;grid-template-columns:26px minmax(0,1fr) 20px;align-items:center;gap:11px;padding:10px 12px;transition:border-color .14s,background .14s;display:grid}.video-listen-gate__options button.is-selected,.video-listen-gate__options button:hover:not(:disabled){background:#fff8e8;border-color:#c38a35}.video-listen-gate__options button>span{border:1px solid var(--line-strong);width:24px;height:24px;font-family:var(--font-mono);border-radius:50%;place-items:center;font-size:11px;display:grid}.video-listen-gate__options button>b{font-weight:550}.video-listen-gate__options button.is-correct{color:#28683e;background:#edf8f0;border-color:#5cae79}.video-listen-gate__options button.is-wrong{color:#a1434a;background:#fff0f1;border-color:#d1767b}.video-listen-gate__card footer{justify-content:space-between;gap:12px;margin-top:14px;display:flex}.video-listen-gate__card footer button{min-height:36px;color:var(--ink-soft);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;font-size:13px;display:inline-flex}.video-listen-gate__card footer button.is-continue{background:var(--success);color:#fff;border-radius:7px;padding:0 15px;font-weight:700}.video-menu-mask{z-index:80;cursor:default;background:#0000006b;border:0;position:fixed;inset:0}.video-side-menu{z-index:90;color:#eaeaea;visibility:hidden;background:#1a1a1a;border-left:1px solid #ffffff14;flex-direction:column;width:min(360px,92vw);transition:transform .24s cubic-bezier(.2,0,.2,1),visibility .24s;display:flex;position:fixed;top:0;bottom:0;right:0;overflow-y:auto;transform:translate(100%)}.video-immersive.menu-open .video-side-menu{visibility:visible;transform:translate(0)}.video-side-menu>header{border-bottom:1px solid #ffffff0f;justify-content:space-between;align-items:center;gap:14px;min-height:62px;padding:13px 20px;display:flex}.video-side-menu>header strong{color:#fff;text-overflow:ellipsis;white-space:nowrap;max-width:78%;font-size:14px;overflow:hidden}.video-side-menu>header button{color:#ccc;cursor:pointer;background:#ffffff0f;border:0;border-radius:7px;place-items:center;width:34px;height:34px;display:grid}.video-progress-card{background:#ffffff0b;border-radius:8px;margin:16px 20px 0;padding:13px 15px}.video-progress-card>div{justify-content:space-between;align-items:baseline;gap:10px;display:flex}.video-progress-card>div span{color:#ffffff9e;font-size:12px}.video-progress-card>div b{color:#fff;font-family:Georgia,serif;font-size:22px}.video-progress-card>i{background:#ffffff14;border-radius:4px;height:4px;margin:8px 0 5px;display:block;overflow:hidden}.video-progress-card>i span{background:#e0a454;height:100%;transition:width .3s;display:block}.video-progress-card>small{color:#ffffff75;font-size:11px}.video-progress-card>small strong{color:#ffffffdb}.video-menu-section{border-top:1px solid #ffffff0d;margin-top:12px;padding:14px 20px}.video-menu-section h2{color:#ffffff6b;text-transform:uppercase;margin:0 0 9px;font-size:10px;font-weight:700}.video-word-legend{flex-wrap:wrap;gap:8px 13px;font-size:12px;display:flex}.video-word-legend span:before{content:"";background:currentColor;border-radius:50%;width:7px;height:7px;margin-right:5px;display:inline-block}.video-word-legend .is-unknown{color:#ff9a8b}.video-word-legend .is-learning{color:#ffd166}.video-word-legend .is-familiar{color:#8be78b}.video-word-legend .is-known{color:#888}.video-menu-section>label{cursor:pointer;min-height:36px}.video-menu-section>label,.video-teacher-rule{color:#ddd;justify-content:space-between;align-items:center;gap:14px;font-size:13px;display:flex}.video-teacher-rule{min-height:32px}.video-teacher-rule b{color:#ffffff8f;font-size:11px;font-weight:650}.video-menu-section input[type=checkbox]{accent-color:#dfa150}.video-menu-section select{color:#fff;background:#ffffff12;border:1px solid #ffffff1c;border-radius:5px;padding:4px 7px;font-size:12px}.video-menu-actions a,.video-menu-actions button{color:#ddd;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:9px;width:100%;min-height:42px;padding:8px 0;font-size:13px;text-decoration:none;display:flex}.video-menu-actions a:hover,.video-menu-actions button:hover:not(:disabled){color:#fff}.video-menu-actions button:disabled{opacity:.38;cursor:not-allowed}.video-menu-actions button small{color:#ffffff80;font-family:var(--font-mono);margin-left:auto}.video-menu-hint{color:#ffffff61;border-top:1px solid #ffffff0d;margin:auto 20px 18px;padding-top:14px;font-size:11px;line-height:1.75}.video-menu-hint kbd{color:#ffffffc7;font-family:var(--font-mono);background:#ffffff17;border-radius:3px;padding:1px 5px}.video-dictionary{z-index:70;background:var(--surface);width:380px;max-height:65dvh;color:var(--ink);border-radius:8px;animation:.22s videoDictionaryIn;position:fixed;bottom:70px;right:20px;overflow-y:auto;box-shadow:0 -8px 38px #0000006b}.video-dictionary .dictionary-panel{width:100%;min-height:0;max-height:none;box-shadow:none;border:0;position:static}.video-dictionary .dictionary-panel__handle{display:none}@keyframes videoDictionaryIn{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.video-message{z-index:95;color:#fff;background:#1c1c1ceb;border:1px solid #ffffff1f;border-radius:6px;max-width:min(520px,100vw - 32px);margin:0;padding:9px 14px;font-size:12px;position:fixed;bottom:18px;left:50%;transform:translate(-50%);box-shadow:0 6px 24px #0000004d}@media (width<=700px){.video-immersive{--video-sub-height:76px;--video-sub-bottom:calc(102px + env(safe-area-inset-bottom))}.video-immersive-subtitles{padding:7px 13px}.video-immersive-sub-de{max-width:96vw;font-size:18px}.video-immersive-sub-zh{font-size:13px;margin-top:4px!important}.video-big-play{width:70px;height:70px}.video-edge{width:44px;height:64px}.video-corner-button,.video-quick-tools button{width:44px;height:44px}.video-quick-tools{top:auto;right:max(10px,env(safe-area-inset-right));grid-auto-flow:column;bottom:10px;transform:none}.video-listen-controls{bottom:calc(49px + env(safe-area-inset-bottom))}.video-listen-controls button{height:38px;padding:0 12px}.video-timeline-bar{padding:6px 11px max(9px,env(safe-area-inset-bottom))}.video-dictionary{border-radius:8px 8px 0 0;width:100%;max-height:72dvh;bottom:0;left:0;right:0}.video-dictionary .dictionary-panel__handle{display:block}.video-listen-gate__card{padding:17px 16px max(18px,env(safe-area-inset-bottom))}.video-listen-gate__card h2{font-size:17px}.video-listen-gate__options button{min-height:44px}.video-message{bottom:calc(12px + env(safe-area-inset-bottom))}}.reader-page{background:var(--bg);min-height:100dvh}.reader-progress{z-index:60;background:var(--surface-muted);height:3px;position:fixed;inset:0 0 auto}.reader-progress span{background:var(--accent);height:100%;transition:width .24s;display:block}.reader-topbar{z-index:40;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 94%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);height:68px;position:sticky;top:0}.reader-topbar__inner{grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:14px;width:min(1240px,100% - 40px);height:100%;margin:0 auto;display:grid}.reader-topbar__title{gap:2px;min-width:0;display:grid}.reader-topbar__title strong{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.reader-classic-link,.reader-topbar__title span{color:var(--ink-muted);font-size:11px}.reader-topbar__actions{align-items:center;gap:8px;display:flex}.reader-classic-link{padding:9px 5px;font-weight:700;text-decoration:none}.reader-classic-link:hover{color:var(--ink)}.reader-shell{width:min(1240px,100% - 40px);margin:0 auto;padding:42px 0 80px}.reader-shell--loading{padding-top:72px}.reader-intro{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:32px;padding:8px 0 35px;display:flex}.reader-intro h1,.reader-intro p,.reader-intro span{margin:0}.reader-intro p{color:var(--accent);align-items:center;gap:7px;font-size:12px;font-weight:760;display:flex}.reader-intro h1{letter-spacing:0;max-width:800px;margin-top:10px;font-size:48px;font-weight:710;line-height:1.1}.reader-intro div>span{color:var(--ink-soft);margin-top:13px;font-size:14px;display:block}.reader-batch-button b{background:var(--accent-soft);min-width:22px;height:22px;color:var(--accent);font-family:var(--font-mono);border-radius:50%;place-items:center;font-size:11px;display:inline-grid}.reader-batch-button{position:relative}.reader-message{border-left:3px solid var(--accent);background:var(--accent-soft);color:var(--accent-ink);margin:18px 0 0;padding:11px 13px;font-size:13px}.reader-layout{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:72px;margin-top:42px;display:grid}.reader-document{min-width:0}.reading-article{max-width:760px;color:var(--ink);letter-spacing:0;font-family:Georgia,Times New Roman,Noto Serif,serif;font-size:21px;line-height:1.95}.reading-sentence{margin:0 0 1.2em}.reading-word{color:inherit;font:inherit;line-height:inherit;cursor:pointer;background:0 0;border:0;border-radius:3px;margin:0;padding:2px 1px;transition:color .14s,background .14s,box-shadow .14s;position:relative}.reading-word:after{content:"";opacity:.2;background:currentColor;border-radius:2px;height:2px;position:absolute;inset:auto 1px 3px}.reading-word--selected,.reading-word:hover{background:var(--surface-muted);box-shadow:0 0 0 2px var(--surface-muted)}.reading-word--unknown{color:var(--danger)}.reading-word--learning{color:var(--warning)}.reading-word--familiar{color:#34718a}.reading-word--known{color:inherit}.reading-word--known:after{opacity:0}.reading-word--inactive{color:var(--ink-muted);opacity:.62}.reading-word--bold{font-weight:760}.reading-word--italic{font-style:italic}.reading-inline-image{border-radius:var(--radius);width:min(100%,720px);height:auto;margin:30px 0;display:block}.reading-article h1,.reading-article h2,.reading-article h3{font-family:var(--font-sans);letter-spacing:0;margin:1.55em 0 .55em;line-height:1.25}.reading-article h1{font-size:34px}.reading-article h2{font-size:27px}.reading-article h3{font-size:21px}.reading-article>:first-child{margin-top:0}.reading-article blockquote{border-left:3px solid var(--line-strong);color:var(--ink-soft);margin:1.4em 0;padding-left:22px}.reading-article li{margin:.35em 0}.reading-article hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}.reading-article code{background:var(--surface-muted);font-family:var(--font-mono);border-radius:3px;padding:2px 5px;font-size:.82em}.reading-table-wrap{max-width:100%;margin:28px 0;overflow-x:auto}.reading-table-wrap table{border-collapse:collapse;width:100%;font-size:17px}.reading-table-wrap td,.reading-table-wrap th{border:1px solid var(--line);text-align:left;vertical-align:top;padding:10px 13px}.reading-table-wrap th{background:var(--surface-muted);font-family:var(--font-sans);font-size:13px}.dictionary-column{min-height:300px;position:sticky;top:96px}.dictionary-idle{border-top:1px solid var(--line);color:var(--ink-muted);padding:25px 0}.dictionary-idle h2,.dictionary-idle p{margin:0}.dictionary-idle h2{color:var(--ink);margin-top:13px;font-size:17px}.dictionary-idle p{margin-top:7px;font-size:13px;line-height:1.6}.word-legend{flex-wrap:wrap;gap:6px;margin-top:18px;display:flex}.word-state{border-radius:3px;align-items:center;min-height:24px;padding:0 8px;font-size:10px;font-weight:760;display:inline-flex}.word-state--unknown{background:color-mix(in srgb,var(--danger) 14%,transparent);color:var(--danger)}.word-state--learning{background:var(--warning-soft);color:var(--warning)}.word-state--familiar{color:#34718a;background:#34718a26}.word-state--known{background:var(--accent-soft);color:var(--accent)}.word-state--inactive{background:var(--surface-muted);color:var(--ink-muted)}.dictionary-panel{border-top:2px solid var(--accent);background:var(--surface);max-height:calc(100dvh - 122px);box-shadow:var(--shadow);overflow-y:auto}.dictionary-panel__handle{display:none}.dictionary-head{justify-content:space-between;align-items:start;gap:12px;padding:23px 22px 17px;display:flex}.dictionary-head h2,.dictionary-head p{margin:0}.dictionary-head p{color:var(--accent);text-transform:uppercase;font-size:10px;font-weight:800}.dictionary-head h2{letter-spacing:0;overflow-wrap:anywhere;margin-top:5px;font-size:26px;line-height:1.15}.dictionary-phonetic{color:var(--ink-muted);font-family:var(--font-mono);margin-top:5px;font-size:12px;display:block}.dictionary-head__actions{gap:3px;display:flex}.dictionary-state{border-bottom:1px solid var(--line);color:var(--ink-muted);align-items:center;gap:9px;padding:0 22px 17px;font-size:11px;display:flex}.dictionary-content{padding:3px 22px 22px}.dictionary-morph{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:17px 0;display:grid}.dictionary-morph span{background:var(--surface-muted);min-width:0;color:var(--ink);overflow-wrap:anywhere;padding:9px;font-size:12px}.dictionary-morph small{color:var(--ink-muted);text-transform:uppercase;margin-bottom:3px;font-size:9px;font-weight:750;display:block}.dictionary-meaning{border-bottom:1px solid var(--line);padding:18px 0}.dictionary-meaning>small{color:var(--accent);font-size:10px;font-weight:750}.dictionary-meaning h3{letter-spacing:0;margin:4px 0 0;font-size:18px}.dictionary-meaning>p{color:var(--ink-soft);margin:7px 0 0;font-size:13px;line-height:1.55}.dictionary-meaning blockquote{border-left:2px solid var(--line-strong);margin:13px 0 0;padding-left:12px}.dictionary-meaning blockquote span,.dictionary-meaning blockquote strong{font-size:12px;line-height:1.5;display:block}.dictionary-meaning blockquote span{color:var(--ink-muted);margin-top:2px}.dictionary-details{grid-template-columns:62px minmax(0,1fr);gap:8px 12px;margin:18px 0 0;font-size:11px;line-height:1.55;display:grid}.dictionary-details dt{color:var(--ink-muted)}.dictionary-details dd{margin:0}.dictionary-empty,.dictionary-note{color:var(--ink-soft);margin:18px 22px;font-size:12px;line-height:1.6}.dictionary-note{background:var(--surface-muted);margin-inline:0;padding:10px 12px}.dictionary-actions{border-top:1px solid var(--line);background:color-mix(in srgb,var(--surface) 94%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);grid-template-columns:1fr auto;gap:7px;padding:13px 15px;display:grid;position:sticky;bottom:0}.dictionary-actions .button{min-width:0;padding-inline:12px;font-size:11px}.button--quiet{color:var(--ink-muted);background:0 0;border:1px solid #0000}.dictionary-loading{gap:5px;padding:28px 22px;display:flex}.dictionary-loading span{background:var(--accent);border-radius:50%;width:7px;height:7px;animation:.9s ease-in-out infinite alternate dictionary-pulse}.dictionary-loading span:nth-child(2){animation-delay:.15s}.dictionary-loading span:nth-child(3){animation-delay:.3s}@keyframes dictionary-pulse{to{opacity:.25;transform:translateY(-3px)}}.reading-quiz{border-top:1px solid var(--line);max-width:760px;margin-top:70px;padding-top:34px}.reading-quiz header{margin-bottom:26px}.reading-quiz header h2,.reading-quiz header p,.reading-quiz header span{margin:0}.reading-quiz header p{color:var(--accent);text-transform:uppercase;font-size:11px;font-weight:800}.reading-quiz header h2{letter-spacing:0;margin-top:5px;font-size:25px}.reading-quiz header span{color:var(--ink-soft);margin-top:7px;font-size:12px;display:block}.reading-quiz fieldset{border:0;gap:7px;margin:0 0 29px;padding:0;display:grid}.reading-quiz legend{width:100%;color:var(--ink);gap:11px;margin-bottom:10px;font-size:15px;font-weight:720;line-height:1.5;display:flex}.reading-quiz legend span{color:var(--accent);font-family:var(--font-mono);flex:none;font-size:12px}.quiz-option{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);width:100%;min-height:44px;color:var(--ink);text-align:left;cursor:pointer;grid-template-columns:27px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 12px;display:grid}.quiz-option>span{border:1px solid var(--line-strong);width:25px;height:25px;color:var(--ink-muted);font-family:var(--font-mono);border-radius:50%;place-items:center;font-size:10px;display:grid}.quiz-option.is-correct,.quiz-option.is-selected,.quiz-option:hover{border-color:var(--accent);background:var(--accent-soft)}.quiz-option.is-correct{color:var(--accent-ink)}.quiz-option.is-wrong{border-color:var(--danger);background:color-mix(in srgb,var(--danger) 10%,var(--surface))}.reader-finish{border-top:1px solid var(--line);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:22px;max-width:760px;margin-top:60px;padding:25px 0;display:flex}.reader-finish div{gap:4px;display:grid}.reader-finish strong{font-size:14px}.reader-finish span{color:var(--ink-muted);font-size:11px}.reader-empty{color:var(--ink-muted);font-family:var(--font-sans);justify-items:start;gap:8px;font-size:14px;display:grid}.reader-empty p{margin:0}.dialog-backdrop,.dictionary-backdrop{z-index:70;position:fixed;inset:0}.dialog-backdrop{background:#0a120d8a;place-items:center;padding:20px;display:grid}.dictionary-backdrop{background:#0a120d6b;border:0;display:none}.confirm-dialog{border-radius:var(--radius);background:var(--surface-strong);width:min(430px,100%);padding:30px;position:relative;box-shadow:0 24px 70px #00000040}.confirm-dialog>svg{color:var(--accent)}.confirm-dialog h2{letter-spacing:0;margin:14px 0 0;font-size:23px}.confirm-dialog p{color:var(--ink-soft);margin:9px 0 22px;font-size:13px;line-height:1.65}.confirm-dialog>div{justify-content:end;gap:8px;display:flex}.confirm-dialog__close{position:absolute;top:13px;right:13px}@media (width<=960px){.reader-layout{grid-template-columns:minmax(0,1fr);gap:0}.dictionary-column{min-height:0;position:static}.dictionary-idle{display:none}.dictionary-backdrop{display:block}.dictionary-panel{z-index:80;border-top:0;border-radius:8px 8px 0 0;max-height:min(76dvh,680px);position:fixed;inset:auto 0 0;box-shadow:0 -18px 54px #0000003d}.dictionary-panel__handle{background:var(--line-strong);border-radius:4px;width:38px;height:4px;margin:8px auto 1px;display:block}}@media (width<=700px){.reader-shell,.reader-topbar__inner{width:min(100% - 28px,1240px)}.reader-topbar__inner{grid-template-columns:38px minmax(0,1fr) auto;gap:9px}.reader-classic-link{display:none}.reader-shell{padding-top:25px}.reader-intro{align-items:start;padding-bottom:25px}.reader-intro h1{overflow-wrap:anywhere;font-size:32px}.reader-intro div>span{max-width:270px;line-height:1.5}.reader-batch-button{width:42px;min-width:42px;height:42px;padding:0;font-size:0}.reader-batch-button b{position:absolute;top:-8px;right:0}.reader-layout{margin-top:29px}.reading-article{font-size:19px;line-height:1.9}.reading-sentence{margin-bottom:1.05em}.reading-article h1{font-size:28px}.reading-article h2{font-size:23px}.reading-article h3{font-size:19px}.reader-finish{flex-direction:column;align-items:stretch}.reader-finish .button{width:100%}.dictionary-head{padding:17px 18px 14px}.dictionary-state{padding:0 18px 14px}.dictionary-content{padding-inline:18px}.dictionary-actions{padding-bottom:max(13px,env(safe-area-inset-bottom))}.reading-quiz{margin-top:52px}}@media (prefers-reduced-motion:reduce){.dictionary-loading span,.reader-progress span,.reading-word{transition:none!important;animation:none!important}}.workspace-main.teacher-main{margin-left:76px;padding:32px 24px 80px}.student-page-narrow{width:min(780px,100%);margin:0 auto}.student-page-wide{width:min(1152px,100%);margin:0 auto}.workspace-crumbs{color:var(--ink-muted);align-items:center;gap:8px;margin:0 0 16px;font-size:12px;display:flex}.workspace-crumbs a{color:var(--ink-soft);text-decoration:none}.workspace-crumbs strong{color:var(--ink-soft);font-weight:500}.workspace-pagehead{align-items:flex-start;gap:12px;min-height:54px;margin-bottom:20px;display:flex}.workspace-pagehead>span{border:1px solid var(--line);background:var(--accent-soft);width:46px;height:46px;color:var(--accent);border-radius:4px;flex:0 0 46px;place-items:center;display:grid}.workspace-pagehead h1{color:var(--ink);letter-spacing:0;margin:1px 0 0;font-size:20px;line-height:1.25}.workspace-pagehead p{color:var(--ink-soft);margin:4px 0 0;font-size:13px}.workspace-panel{border:1px solid var(--line);background:var(--surface);border-radius:4px;margin-bottom:16px;overflow:hidden}.workspace-panel>header{border-bottom:1px solid var(--line);background:var(--surface-muted);min-height:41px;color:var(--ink-soft);align-items:center;padding:9px 13px;font-size:13px;font-weight:700;display:flex}.workspace-panel__body{padding:12px}.workspace-empty{min-height:126px;color:var(--ink-muted);text-align:center;place-items:center;padding:24px;font-size:13px;display:grid}.workspace-select{max-width:395px;color:var(--ink-soft);grid-template-columns:auto minmax(0,1fr);align-items:center;gap:9px;margin-bottom:24px;font-size:13px;display:grid}.workspace-select select{border:1px solid var(--line-strong);background:var(--surface);height:36px;color:var(--ink);border-radius:4px;padding:0 34px 0 12px}.workspace-tabs{border-bottom:1px solid var(--line);gap:2px;margin:0 0 16px;display:flex;overflow-x:auto}.workspace-tabs button{min-height:43px;color:var(--ink-soft);white-space:nowrap;background:0 0;border:0;border-bottom:2px solid #0000;align-items:center;gap:6px;padding:0 13px;font-size:13px;display:inline-flex}.workspace-tabs button.is-active{border-bottom-color:var(--accent);color:var(--accent);font-weight:600}.workspace-segments{gap:6px;margin-bottom:22px;display:flex;overflow-x:auto}.student-vocab-filters button,.workspace-segments button{border:1px solid var(--line);background:var(--surface);min-height:31px;color:var(--ink-soft);white-space:nowrap;border-radius:999px;padding:0 11px;font-size:12px}.student-vocab-filters button.is-active,.workspace-segments button.is-active{border-color:var(--ink);background:var(--ink);color:#fff}.student-review-strip{background:linear-gradient(100deg,#f2f7e6,#eef5fc);border:1px solid #bcdcf4;border-radius:8px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:13px;min-height:67px;margin-bottom:24px;padding:12px 16px;text-decoration:none;display:grid}.student-review-strip>strong{color:var(--accent-strong);font-variant-numeric:tabular-nums;font-size:27px}.student-review-strip>span{gap:1px;display:grid}.student-review-strip>span b{color:var(--ink);font-size:13px}.student-review-strip>span small{color:var(--ink-soft);font-size:12px}.student-review-strip--link>b{color:var(--accent);align-items:center;gap:5px;font-size:12px;display:inline-flex}.student-task-section{margin-bottom:24px}.student-task-section h2{color:var(--ink-soft);letter-spacing:0;align-items:center;gap:6px;margin:0 0 8px;font-size:13px;display:flex}.student-task-section h2 small{color:var(--ink-muted);font-weight:500}.student-task-section h2.is-expired{color:var(--danger)}.student-task-section h2.is-current{color:var(--accent-strong)}.student-task-row{border:1px solid var(--line);background:var(--surface);min-height:64px;color:var(--ink);border-radius:8px;grid-template-columns:20px 18px minmax(0,1fr) auto 16px;align-items:center;gap:10px;margin-bottom:8px;padding:10px 14px;text-decoration:none;display:grid}a.student-task-row:hover{border-color:#7db8e8;box-shadow:0 3px 12px #14233c14}.student-task-row.is-current{background:var(--accent-soft);border-color:#7db8e8}.student-task-row.is-expired{background:#fbf1e8;border-color:#f2d9c8}.student-task-row.is-completed{opacity:.72}.student-task-row__box{border:1px solid var(--line-strong);color:#0000;border-radius:6px;place-items:center;width:20px;height:20px;display:grid}.student-task-row.is-completed .student-task-row__box{color:#fff;background:#c68e22;border-color:#c68e22}.student-task-row.is-locked .student-task-row__box{color:var(--ink-muted)}.student-task-row__icon{color:var(--accent)}.student-task-row>span:nth-child(3){gap:2px;min-width:0;display:grid}.student-task-row>span:nth-child(3) strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.student-task-row>span:nth-child(3) small,.student-task-row__due{color:var(--ink-muted);font-size:12px}.student-locked-module{border:1px dashed var(--line-strong);background:var(--surface-muted);min-height:59px;color:var(--ink-muted);border-radius:8px;align-items:center;gap:12px;margin-bottom:8px;padding:12px 15px;display:flex}.student-locked-module span{gap:2px;display:grid}.student-locked-module strong{color:var(--ink-soft);font-size:13px}.student-locked-module small{font-size:11px}.student-vocab-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:12px;display:grid}.student-vocab-stats>div{border:1px solid var(--line);border-radius:8px;align-content:center;gap:2px;min-height:66px;padding:9px 12px;display:grid}.student-vocab-stats strong{color:var(--ink);font-size:25px}.student-vocab-stats small{color:var(--ink-muted);font-size:12px}.student-vocab-search{border:1px solid var(--line);height:42px;color:var(--ink-muted);border-radius:8px;align-items:center;gap:8px;padding:0 11px;display:flex}.student-vocab-search input{width:100%;min-width:0;height:100%;color:var(--ink);background:0 0;border:0;outline:0;font-size:13px}.student-vocab-filters{flex-wrap:wrap;gap:6px;margin:9px 0 10px;display:flex}.student-vocab-filters button{align-items:center;gap:5px;display:inline-flex}.student-vocab-filters button i{background:var(--ink-muted);border-radius:50%;width:8px;height:8px}.student-vocab-filters button i.is-known{background:#c68e22}.student-vocab-filters button i.is-familiar{background:#508b45}.student-vocab-filters button i.is-learning{background:#e0912a}.student-vocab-filters button i.is-unknown{background:#b14d26}.student-vocab-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;display:grid}.student-vocab-grid>button{border:1px solid var(--line);border-left:3px solid var(--ink-muted);background:var(--surface);min-width:0;min-height:79px;color:var(--ink);text-align:left;border-radius:8px;grid-template-columns:1fr auto;gap:2px 8px;padding:10px 11px;display:grid;position:relative}.student-vocab-grid>button.is-known{border-left-color:#c68e22}.student-vocab-grid>button.is-familiar{border-left-color:#508b45}.student-vocab-grid>button.is-learning{border-left-color:#e0912a}.student-vocab-grid>button.is-unknown{border-left-color:#b14d26}.student-vocab-grid>button>i{background:#c68e22;border-radius:50%;width:9px;height:9px;position:absolute;top:8px;right:8px;box-shadow:0 0 0 4px #f5e5b0}.student-vocab-grid strong{overflow-wrap:anywhere;font-family:Georgia,serif;font-size:15px}.student-vocab-grid small{color:var(--ink-muted);font-size:9px}.student-vocab-grid span{background:var(--surface-muted);border-radius:4px;grid-column:1/-1;height:4px;overflow:hidden}.student-vocab-grid span b{background:currentColor;height:100%;display:block}.student-vocab-grid em{color:var(--ink-muted);grid-column:1/-1;font-size:10px;font-style:normal}.workspace-drawer-backdrop{z-index:70;background:#1b273357;border:0;position:fixed;inset:0}.workspace-drawer{z-index:80;background:var(--surface);width:min(390px,92vw);padding:28px;position:fixed;inset:0 0 0 auto;overflow-y:auto;box-shadow:-8px 0 32px #14233c26}.workspace-drawer>button{width:34px;height:34px;color:var(--ink-soft);background:0 0;border:0;place-items:center;display:grid;position:absolute;top:16px;right:16px}.workspace-drawer>p{color:var(--accent);margin:38px 0 6px;font-size:12px}.workspace-drawer h2{letter-spacing:0;margin:0;font-family:Georgia,serif;font-size:29px}.workspace-drawer>small{color:var(--ink-muted)}.workspace-drawer dl{margin-top:28px}.workspace-drawer dl div{border-top:1px solid var(--line);padding:13px 0}.workspace-drawer dt{color:var(--ink-muted);font-size:11px}.workspace-drawer dd{color:var(--ink);margin:5px 0 0;font-size:13px;line-height:1.6}.student-plaza-section{margin-top:26px}.student-plaza-section>h2{color:var(--ink);letter-spacing:0;margin:0 0 10px;font-size:16px}.student-plaza-section>h2 small{color:var(--ink-muted);font-size:11px}.student-plaza-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.student-plaza-card{border:1px solid var(--line);background:var(--surface);min-width:0;color:var(--ink);text-align:left;cursor:pointer;border-radius:8px;padding:0;transition:border-color .16s,box-shadow .16s,transform .16s;position:relative;overflow:hidden}.student-plaza-card:hover{border-color:#7db8e8;transform:translateY(-2px);box-shadow:0 9px 22px #1b314521}.student-plaza-card:focus-visible{outline:3px solid var(--accent-soft);outline-offset:2px;border-color:var(--accent)}.student-plaza-card:disabled{cursor:wait}.student-plaza-cover{aspect-ratio:16/10;color:var(--accent);justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.student-plaza-cover.is-courseware{background:linear-gradient(170deg,#eef1f6,#dfe5ee)}.student-plaza-cover.is-video{background:linear-gradient(165deg,#eceff5,#dde3ec)}.student-plaza-cover.is-reading{background:linear-gradient(160deg,#f1f0ea,#e4e2d9)}.student-plaza-book{aspect-ratio:.72;perspective:900px;width:35%}.student-plaza-book__object{width:100%;height:100%;transform-style:preserve-3d;transition:transform .22s;display:block;position:relative;transform:rotateY(-16deg)rotateX(1.5deg)}.student-plaza-card:hover .student-plaza-book__object{transform:rotateY(-26deg)rotateX(1.5deg)translateY(-2px)}.student-plaza-book__face{z-index:2;-o-object-fit:cover;object-fit:cover;background:#fff;border:1px solid #25313c33;border-radius:2px 4px 4px 2px;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative;overflow:hidden;box-shadow:inset 7px 0 9px #0e19231f,8px 10px 15px #1f2c3733}.student-plaza-book__blank{color:#55738d;background:linear-gradient(145deg,#fdfdfc,#dfeaf2)}.student-plaza-book__spine{z-index:3;background:linear-gradient(90deg,#121f2c80,#fff3);border-radius:2px 0 0 2px;width:7px;position:absolute;inset:0 auto 0 0}.student-plaza-book__edge{z-index:1;transform-origin:0;background:repeating-linear-gradient(0deg,#f9f8f3 0 2px,#d9d7ce 2px 3px);width:6px;position:absolute;inset:3px -5px 3px auto;transform:rotateY(28deg)}.student-plaza-screen{perspective:900px;width:82%}.student-plaza-screen__object{width:100%;transform-style:preserve-3d;transition:transform .22s;display:block;position:relative;transform:rotateY(-14deg)rotateX(2deg)}.student-plaza-card:hover .student-plaza-screen__object{transform:rotateY(-22deg)rotateX(2deg)translateY(-2px)}.student-plaza-screen__face{z-index:2;aspect-ratio:16/9;-o-object-fit:cover;object-fit:cover;color:#96b6d0;background:#0b1016;border:3px solid #12181f;border-radius:5px;justify-content:center;align-items:center;width:100%;display:flex;position:relative;overflow:hidden;box-shadow:9px 11px 17px #18232c40}.student-plaza-screen__edge{z-index:1;transform-origin:100%;background:#232d36;width:5px;position:absolute;inset:4px auto 4px -4px;transform:rotateY(-30deg)}.student-plaza-screen__sheen{z-index:3;pointer-events:none;background:linear-gradient(125deg,#ffffff2e,#0000 34% 70%,#ffffff0f);position:absolute;inset:3px}.student-plaza-screen__play{z-index:4;color:#fff;background:#0a1117b8;border-radius:50%;place-items:center;width:32px;height:32px;display:grid;position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);box-shadow:0 2px 8px #00000040}.student-plaza-paper{aspect-ratio:.74;perspective:900px;width:34%}.student-plaza-paper__object{width:100%;height:100%;transition:transform .22s;display:block;position:relative;transform:rotate(-2.5deg)}.student-plaza-card:hover .student-plaza-paper__object{transform:rotate(-4deg)translateY(-2px)}.student-plaza-paper__object:before{content:"";background:#fbfaf6;border:1px solid #d2d0c7;position:absolute;inset:2px;transform:rotate(3deg)translate(4px,2px);box-shadow:5px 8px 12px #2d2d2624}.student-plaza-paper__face{z-index:2;background:#fffefa;border:1px solid #cfccc0;flex-direction:column;gap:7%;padding:12% 11%;display:flex;position:absolute;inset:0;overflow:hidden;box-shadow:5px 8px 14px #2d2d262e}.student-plaza-paper__title{background:#b9b3a2;width:66%;height:7%}.student-plaza-paper__lines{background:repeating-linear-gradient(0deg,#0000 0 5px,#d9d6cb 5px 6px);width:100%;height:18%}.student-plaza-paper__lines.is-short{width:76%}.student-plaza-paper__fold{background:linear-gradient(135deg,#ddd9cd 0 48%,#f7f5ee 50% 100%);width:22%;height:16%;position:absolute;bottom:0;right:0;box-shadow:-1px -1px #d1cec3}.student-plaza-generic{place-items:center;display:grid}.student-plaza-level,.student-plaza-status{z-index:6;border-radius:4px;padding:3px 7px;font-size:10px;font-style:normal;line-height:1.35;position:absolute;top:8px;box-shadow:0 1px 5px #1f2d391f}.student-plaza-level{color:var(--ink-soft);background:#ffffffeb;font-weight:700;left:8px}.student-plaza-status{color:var(--accent-strong);background:#e8f4fcf0;right:8px}.student-plaza-status.is-complete{color:#3e7937;background:#ebf5e9f2}.student-plaza-card__body{gap:4px;padding:11px;display:grid}.student-plaza-card__body strong{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:13px;overflow:hidden}.student-plaza-card__body small{color:var(--ink-muted);font-size:10px}.student-plaza-card__loading{z-index:8;color:var(--accent);background:#ffffffb3;place-items:center;display:grid;position:absolute;inset:0}@media (prefers-reduced-motion:reduce){.student-plaza-book__object,.student-plaza-card,.student-plaza-paper__object,.student-plaza-screen__object{transition:none}}.student-class-layout{grid-template-columns:1.3fr .7fr;gap:16px;display:grid}.workspace-definition-list{margin:0}.workspace-definition-list>div{border-bottom:1px solid var(--line);grid-template-columns:120px minmax(0,1fr);gap:16px;padding:12px 14px;display:grid}.workspace-definition-list>div:last-child{border-bottom:0}.workspace-definition-list dt{color:var(--ink-muted);font-size:12px}.workspace-definition-list dd{color:var(--ink);margin:0;font-size:13px}.student-classmates{flex-wrap:wrap;gap:8px;padding:13px;display:flex}.student-classmates>span{background:var(--surface-muted);color:var(--ink-soft);border-radius:4px;align-items:center;gap:5px;padding:6px 9px;font-size:12px;display:inline-flex}.student-classmates>span.is-self{background:var(--accent-soft);color:var(--accent-strong)}.student-classmates small,.student-effort-list span small{background:var(--accent);color:#fff;border-radius:3px;padding:1px 4px;font-size:9px}.student-chat__messages{flex-direction:column;gap:10px;min-height:320px;max-height:540px;padding:15px;display:flex;overflow-y:auto}.student-chat__messages article{align-self:flex-start;max-width:72%}.student-chat__messages article.is-self{text-align:right;align-self:flex-end}.student-chat__messages article small{color:var(--ink-muted);font-size:10px}.student-chat__messages article p{background:var(--surface-muted);color:var(--ink);text-align:left;border-radius:4px;margin:3px 0 0;padding:9px 11px;font-size:13px;line-height:1.55}.student-chat__messages article.is-self p{background:var(--accent);color:#fff}.student-chat__messages article.is-teacher:not(.is-self) p{border-left:3px solid var(--accent)}.student-chat>form{border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr) auto;gap:9px;padding:12px;display:grid}.student-chat textarea{resize:vertical;border:1px solid var(--line-strong);min-height:46px;color:var(--ink);border-radius:4px;padding:9px 11px}.student-chat .form-error{color:var(--danger);margin:0;padding:0 12px 12px;font-size:11px}.student-effort-list>div{border-bottom:1px solid var(--line);grid-template-columns:35px minmax(0,1fr) auto 210px;align-items:center;gap:10px;min-height:61px;padding:10px 13px;display:grid}.student-effort-list>div:last-child{border-bottom:0}.student-effort-list>div.is-self{background:var(--accent-soft)}.student-effort-list>div>strong{color:var(--accent);text-align:center;font-size:18px}.student-effort-list>div>span{align-items:center;gap:6px;font-size:13px;display:flex}.student-effort-list>div>b{font-size:13px}.student-effort-list>div>small{color:var(--ink-muted);text-align:right;font-size:11px}.report-hero{border-bottom:1px solid var(--line);text-align:center;padding:22px 18px}.report-hero>svg{color:var(--ginkgo,#508b45)}.report-hero p{color:var(--ink-muted);margin:6px 0 2px;font-size:12px;font-weight:700}.report-hero h1{color:var(--ink);letter-spacing:0;margin:0;font-size:23px}.report-hero small{color:var(--ink-muted);margin-top:5px;display:block}.report-summary{margin-top:16px}.report-summary>p{color:var(--ink-soft);text-align:center;margin:0;padding:14px 18px 18px}.report-grade{border-bottom:1px solid var(--line);align-items:center;gap:24px;padding:20px 22px;display:flex}.report-grade>span{gap:2px;display:grid}.report-grade small{color:var(--ink-muted);font-size:9px}.report-grade strong{font-family:var(--font-mono);font-size:28px}.report-metrics{grid-template-columns:repeat(3,1fr);padding:18px;display:grid}.report-metrics span{border-right:1px solid var(--line);min-width:0;color:var(--ink-muted);flex-direction:column;align-items:center;font-size:11px;display:flex}.report-metrics span:last-child{border-right:0}.report-metrics b{color:var(--accent);font-size:25px}.report-word-list>div{border-bottom:1px solid var(--line);grid-template-columns:20px minmax(0,1fr) auto;align-items:center;gap:8px;padding:10px 16px;display:grid}.report-word-list>div:last-child{border-bottom:0}.report-word-list svg{color:var(--warning)}.report-word-list small,.report-word-list strong{display:block}.report-word-list small{color:var(--ink-muted)}.report-word-list>div>b{color:var(--accent)}.report-actions{gap:8px;padding:18px 0 36px}.report-actions,.report-pending{justify-content:center;display:flex}.report-pending{align-items:center;gap:7px}.report-paper-sections{margin-top:16px}.report-paper-sections article,.teacher-paper-report article{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1fr) auto 64px;align-items:center;gap:12px;min-height:62px;padding:10px 16px;display:grid}.report-paper-sections article:last-child,.teacher-paper-report article:last-child{border-bottom:0}.report-paper-sections span small,.report-paper-sections span strong,.teacher-paper-report span small,.teacher-paper-report span strong{display:block}.report-paper-sections span small,.teacher-paper-report span small{color:var(--accent);font-size:10px;font-weight:800}.report-paper-sections article>b,.teacher-paper-report article>b{font-size:15px}.report-paper-sections article>em,.teacher-paper-report article>em{color:var(--ink-muted);text-align:right;font-size:11px;font-style:normal}.teacher-document-actions{align-items:center;gap:8px;display:flex}.teacher-document-note{color:var(--ink-muted);margin:12px 0 0;font-size:11px}.dictionary-search{border:1px solid var(--line-strong);color:var(--ink-muted);background:#fff;border-radius:6px;grid-template-columns:24px minmax(0,1fr) 22px;align-items:center;gap:8px;margin:12px 0 18px;padding:12px 14px;display:grid}.dictionary-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.dictionary-search input{width:100%;color:var(--ink);font:inherit;background:0 0;border:0;outline:0;font-size:16px}.dictionary-results{border:1px solid var(--line);background:#fff;border-radius:6px;display:grid}.dictionary-results>button{border:0;border-bottom:1px solid var(--line);color:var(--ink);text-align:left;cursor:pointer;background:0 0;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:16px;padding:13px 15px;display:grid}.dictionary-results>button:last-child{border-bottom:0}.dictionary-results>button:hover{background:var(--accent-soft)}.dictionary-results>button.is-active{background:var(--accent-soft);box-shadow:inset 3px 0 var(--accent)}.dictionary-results b,.dictionary-results small,.dictionary-results strong{display:block}.dictionary-results small{color:var(--ink-muted);margin-top:3px;font-weight:400}.dictionary-results b{color:var(--ink-soft);margin-bottom:3px;font-size:12px;font-weight:500}.dictionary-entry{padding-top:54px}.dictionary-entry>h2{margin-right:8px;display:inline}.dictionary-speak{width:32px;height:32px;color:var(--accent);background:var(--accent-soft);cursor:pointer;vertical-align:middle;border:0;border-radius:4px;place-items:center;display:inline-grid}.dictionary-entry>dl{background:var(--surface-soft);margin:16px 0;padding:10px 12px}.dictionary-entry>dl>div{grid-template-columns:72px 1fr;padding:4px 0;display:grid}.dictionary-entry dt{color:var(--ink-muted)}.dictionary-entry article{border-top:1px solid var(--line);padding:14px 0}.dictionary-entry article h3{letter-spacing:0;margin:3px 0;font-size:16px}.dictionary-entry article p{margin:0 0 8px}.dictionary-entry blockquote{border-left:2px solid var(--accent);margin:6px 0;padding-left:10px}.dictionary-entry blockquote b,.dictionary-entry blockquote span{display:block}.dictionary-entry blockquote span{color:var(--ink-muted)}.dictionary-page__layout{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:22px;display:grid}.dictionary-page__detail{min-height:280px;position:sticky;top:78px}.dictionary-page__detail .dictionary-panel{max-height:calc(100dvh - 110px)}.dictionary-page__detail .dictionary-idle{border:1px solid var(--line);background:var(--surface);text-align:center;align-content:center;justify-items:center;min-height:280px;padding:30px;display:grid}.dictionary-page__detail .dictionary-idle svg{color:var(--accent)}@media (width<=960px){.dictionary-page__layout{grid-template-columns:minmax(0,1fr)}.dictionary-page__detail{min-height:0;position:static}.dictionary-page__detail .dictionary-idle{display:none}}.workspace-pagehead__actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;margin-left:auto;display:flex}.teacher-inline-form{margin-bottom:14px}.teacher-inline-form form{grid-template-columns:minmax(180px,1fr) minmax(220px,2fr) auto auto;align-items:end;gap:9px;padding:14px;display:grid}.teacher-inline-form label{color:var(--ink-muted);gap:5px;font-size:11px;font-weight:700;display:grid}.teacher-inline-form input,.teacher-member-picker input[type=text]{padding:0 10px}.teacher-inline-form input,.teacher-inline-form select,.teacher-member-picker input[type=text]{border:1px solid var(--line-strong);min-height:36px;color:var(--ink);font:inherit;background:#fff;border-radius:4px}.teacher-inline-form select{padding:0 8px}.teacher-student-settings form{grid-template-columns:repeat(5,minmax(110px,1fr)) auto}.button--danger{color:var(--danger);background:#fff8f5;border-color:#e6c4b7}.teacher-class-layout{grid-template-columns:minmax(0,1fr) 260px;align-items:start;gap:18px;display:grid}.teacher-class-layout aside{gap:10px;display:grid}.teacher-full-button{width:100%}.teacher-roadmap{padding:12px 18px 20px 32px}.teacher-roadmap article{grid-template-columns:32px minmax(0,1fr) auto;align-items:start;gap:11px;min-height:82px;display:grid;position:relative}.teacher-roadmap article:not(:last-child):before{content:"";background:var(--line);width:2px;position:absolute;top:31px;bottom:-3px;left:15px}.teacher-roadmap article>span{z-index:1;border:2px solid var(--line-strong);width:32px;height:32px;color:var(--ink-muted);background:#fff;border-radius:50%;place-items:center;font-size:12px;font-weight:700;display:grid;position:relative}.teacher-roadmap article>span.is-active{border-color:var(--accent);color:var(--accent)}.teacher-roadmap article>span.is-done{color:#3f7438;background:#edf7e9;border-color:#7fb172}.teacher-roadmap article>div{padding-top:3px}.teacher-roadmap article small,.teacher-roadmap article strong{display:block}.teacher-roadmap article small{color:var(--ink-muted);margin-top:3px}.teacher-roadmap article i{background:var(--surface-soft);border-radius:3px;width:min(440px,100%);height:5px;margin-top:10px;display:block;overflow:hidden}.teacher-roadmap article i b{background:#4f9651;height:100%;display:block}.teacher-roadmap article em{color:var(--ink-soft);padding-top:5px;font-size:11px;font-style:normal;font-weight:700}.teacher-member-picker{border-bottom:1px solid var(--line);background:var(--surface-soft);grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;padding:12px;display:grid}.teacher-member-picker label{border:1px solid var(--line);background:#fff;border-radius:4px;align-items:center;gap:8px;padding:8px;display:flex}.teacher-member-picker label small,.teacher-member-picker label span{display:block}.teacher-member-picker label small{color:var(--ink-muted)}.teacher-member-picker .button{grid-column:1/-1;justify-self:end}.teacher-chat>div{background:var(--surface-soft);flex-direction:column;gap:8px;min-height:280px;max-height:55vh;padding:16px;display:flex;overflow:auto}.teacher-chat article{border:1px solid var(--line);background:#fff;border-radius:6px;width:fit-content;max-width:72%;padding:8px 34px 8px 10px;position:relative}.teacher-chat article.is-self{background:var(--accent-soft);border-color:#bad3e9;align-self:flex-end}.teacher-chat article small{color:var(--ink-muted)}.teacher-chat article p{margin:3px 0 0}.teacher-chat article>button{width:24px;height:24px;color:var(--ink-muted);cursor:pointer;background:0 0;border:0;place-items:center;display:grid;position:absolute;top:6px;right:6px}.teacher-chat>form{grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:12px;display:grid}.teacher-chat textarea{resize:vertical;border:1px solid var(--line-strong);min-height:62px;font:inherit;border-radius:4px;padding:9px}.teacher-form-page{width:min(760px,100%);margin:0 auto}.teacher-native-form>div{gap:14px;padding:18px;display:grid}.teacher-native-form label{color:var(--ink-soft);gap:6px;font-size:12px;font-weight:700;display:grid}.teacher-native-form input,.teacher-native-form select{border:1px solid var(--line-strong);width:100%;min-height:39px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:0 10px}.teacher-native-form input:focus,.teacher-native-form select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:0}.teacher-form-split{grid-template-columns:1fr 1fr;gap:10px;display:grid}.teacher-native-form__actions{justify-content:flex-end;gap:8px;padding-top:6px;display:flex}.teacher-curriculum-list{display:grid}.teacher-curriculum-list>a{border-bottom:1px solid var(--line);color:var(--ink);grid-template-columns:minmax(0,1fr) auto 18px;align-items:center;gap:14px;padding:14px 16px;text-decoration:none;display:grid}.teacher-curriculum-list>a:last-child{border-bottom:0}.teacher-curriculum-list>a:hover{background:var(--accent-soft)}.teacher-curriculum-list small,.teacher-curriculum-list strong{display:block}.teacher-curriculum-list small,.teacher-curriculum-list>a>b{color:var(--ink-muted);font-size:11px;font-weight:500}.teacher-curriculum-add>div{grid-template-columns:repeat(4,minmax(120px,1fr));align-items:end;gap:10px;padding:14px;display:grid}.teacher-curriculum-add label{color:var(--ink-muted);gap:5px;font-size:11px;font-weight:700;display:grid}.teacher-curriculum-add input,.teacher-curriculum-add select,.teacher-modules header input,.teacher-plan-items select{border:1px solid var(--line-strong);min-height:36px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:0 8px}.teacher-modules>header{justify-content:space-between;align-items:center;display:flex}.teacher-modules>header form{gap:6px;display:flex}.teacher-modules>article{border-bottom:1px solid var(--line)}.teacher-modules>article:last-child{border-bottom:0}.teacher-modules>article>div:first-child{background:var(--surface-soft);align-items:center;gap:9px;min-height:46px;padding:8px 14px;display:flex}.teacher-modules>article>div:first-child small{color:var(--ink-muted)}.teacher-modules>article>div:first-child button{margin-left:auto}.teacher-plan-items>div{border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr) 130px repeat(4,32px);align-items:center;gap:6px;min-height:54px;padding:7px 14px 7px 26px;display:grid}.teacher-plan-items small,.teacher-plan-items strong{display:block}.teacher-plan-items small{color:var(--ink-muted)}.teacher-material-submit>div{grid-template-columns:150px minmax(0,1fr) 120px;align-items:end;gap:10px;padding:14px;display:grid}.teacher-material-submit label{color:var(--ink-muted);gap:5px;font-size:11px;font-weight:700;display:grid}.teacher-material-submit .form-error,.teacher-material-submit label.is-wide{grid-column:1/-1}.teacher-library-filters select,.teacher-material-submit input,.teacher-material-submit select,.teacher-material-submit textarea{border:1px solid var(--line-strong);color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:8px}.teacher-library-filters{gap:6px;display:flex}.teacher-library-filters select{padding:4px 7px}.teacher-library-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;padding:12px;display:grid}.teacher-library-grid>a{border:1px solid var(--line);min-height:150px;color:var(--ink);border-radius:6px;flex-direction:column;padding:14px;text-decoration:none;display:flex}.teacher-library-grid>a:hover{background:var(--accent-soft);border-color:#a9c9e5}.teacher-library-grid>a>span{color:#27567e;background:#e8f2fb;border-radius:3px;align-self:flex-start;padding:2px 6px;font-size:10px;font-weight:700}.teacher-library-grid h2{letter-spacing:0;margin:12px 0 4px;font-size:15px}.teacher-library-grid p{color:var(--ink-muted);margin:0;font-size:11px}.teacher-library-grid>a>div{color:var(--ink-muted);justify-content:space-between;margin-top:auto;padding-top:12px;font-size:11px;display:flex}.teacher-inline-create,.teacher-question-editor>div,.teacher-resource-form>div{grid-template-columns:repeat(2,minmax(0,1fr));align-items:end;gap:12px;padding:14px;display:grid}.teacher-inline-create label,.teacher-question-editor label,.teacher-resource-form label{color:var(--ink-muted);gap:5px;font-size:11px;font-weight:700;display:grid}.teacher-inline-create input,.teacher-inline-create select,.teacher-inline-create textarea,.teacher-paper-add select,.teacher-question-editor input,.teacher-question-editor select,.teacher-question-editor textarea,.teacher-resource-form input,.teacher-resource-form select,.teacher-resource-form textarea{border:1px solid var(--line-strong);width:100%;min-height:36px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:8px}.teacher-inline-create .form-error,.teacher-inline-create .is-wide,.teacher-question-editor .form-error,.teacher-question-editor .is-wide,.teacher-resource-form .form-actions,.teacher-resource-form .form-error,.teacher-resource-form .is-wide{grid-column:1/-1}.teacher-resource-form .check-label{flex-direction:row;align-items:center;gap:8px;min-height:36px;display:flex}.teacher-resource-form .check-label input{width:16px;min-height:16px}.teacher-resource-form .form-actions{justify-content:space-between;display:flex}.teacher-options{gap:7px;display:grid}.teacher-options>label{grid-template-columns:18px minmax(0,1fr) 32px;align-items:center;gap:7px;display:grid}.teacher-options>label>input[type=checkbox]{width:16px;min-height:16px}.teacher-question-list{display:grid}.teacher-question-list article{border-bottom:1px solid var(--line);grid-template-columns:42px minmax(0,1fr) 34px;align-items:center;padding:8px 10px;display:grid}.teacher-question-list article:last-child{border-bottom:0}.teacher-question-order{color:var(--ink-muted);place-items:center;font-size:11px;display:grid}.teacher-question-main{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:0 0;border:0;padding:7px 10px}.teacher-question-main:hover{background:var(--accent-soft)}.teacher-question-main span{color:var(--accent);font-size:10px;font-weight:800}.teacher-question-main small{color:var(--ink-muted);margin-left:7px}.teacher-question-main p{white-space:pre-wrap;margin:5px 0 0;font-size:13px;line-height:1.55}.teacher-paper-add{border-bottom:1px solid var(--line);gap:8px;padding:12px;display:flex}.teacher-paper-add select{flex:1}.teacher-paper-sections article{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:15px;min-height:62px;padding:10px 13px;display:flex}.teacher-paper-sections article:last-child{border-bottom:0}.teacher-paper-sections article>div{align-items:center;gap:12px;display:flex}.teacher-paper-sections article>div:first-child>b{min-width:46px;color:var(--accent);font-size:11px}.teacher-paper-sections small,.teacher-paper-sections strong{display:block}.teacher-paper-sections small{color:var(--ink-muted);margin-top:3px;font-size:11px}.teacher-class-curriculum{gap:10px;padding:12px;display:grid}.teacher-class-curriculum label{color:var(--ink-muted);gap:5px;font-size:11px;font-weight:700;display:grid}.teacher-class-curriculum input,.teacher-class-curriculum select{border:1px solid var(--line-strong);min-height:36px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:0 8px}.courseware-page,.gender-page{background:var(--page);min-height:100dvh}.courseware-page{height:100dvh;overflow:hidden}.courseware-topbar,.gender-topbar{z-index:30;border-bottom:1px solid var(--line);background:#fffffff5;align-items:center;gap:10px;min-height:58px;padding:8px 16px;display:flex;position:sticky;top:0}.courseware-topbar>div,.gender-topbar>div{min-width:0;margin-right:auto;display:grid}.courseware-topbar strong,.gender-topbar strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.courseware-topbar small,.gender-topbar small{color:var(--ink-muted);font-size:10px}.courseware-topbar .button{white-space:nowrap}.courseware-all-master span{background:var(--surface-muted);border-radius:3px;min-width:18px;padding:1px 4px;font-size:10px}.courseware-layout{grid-template-columns:130px minmax(0,1fr);min-height:calc(100vh - 62px);display:grid}.courseware-page>.courseware-layout{grid-template-rows:minmax(0,1fr);height:calc(100dvh - 58px);min-height:0;overflow:hidden}.courseware-layout>aside{overscroll-behavior:contain;scrollbar-gutter:stable;border-right:1px solid var(--line);background:var(--surface-soft);align-content:start;gap:8px;min-height:0;padding:12px;display:grid;overflow:auto}.courseware-layout>aside button{cursor:pointer;background:#fff;border:2px solid #0000;padding:0;position:relative}.courseware-layout>aside button.is-active{border-color:var(--accent)}.courseware-layout>aside img{width:100%;display:block}.courseware-layout>aside span{color:#fff;background:#000000a6;padding:1px 4px;font-size:9px;position:absolute;bottom:3px;right:3px}.courseware-layout>main{overscroll-behavior:contain;scrollbar-gutter:stable;min-width:0;min-height:0;padding:18px;overflow:auto}.courseware-stage{place-items:center;min-height:calc(100vh - 148px);display:grid}.courseware-sheet{background:#fff;width:min(100%,1100px);position:relative;overflow:hidden;box-shadow:0 4px 18px #1a263021}.courseware-sheet>img{-o-object-fit:contain;object-fit:contain;width:100%;height:100%;display:block}.courseware-preview-word{pointer-events:none;background:#0f6cbf1a;border:1px solid #0f6cbfa6;position:absolute}.courseware-word{cursor:pointer;background:0 0;border:0;padding:0;position:absolute}.courseware-word.is-unknown{background:#cc40371f;outline:1px solid #cc403773}.courseware-word.is-learning{background:#de9e301f;outline:1px solid #de9e3073}.courseware-word.is-familiar{background:#34718a1a;outline:1px solid #34718a66}.courseware-word.is-selected,.courseware-word:hover{outline:2px solid var(--accent);background:#0f6cbf33}.courseware-controls{justify-content:center;align-items:center;gap:8px;padding-top:14px;display:flex}.courseware-controls>span{color:var(--ink-muted);font-size:11px}.courseware-dictionary{z-index:60;border:1px solid var(--line);background:#fff;width:min(340px,100vw - 28px);padding:20px;position:fixed;top:72px;right:14px;box-shadow:0 12px 36px #19253033}.courseware-dictionary>.icon-button{position:absolute;top:8px;right:8px}.courseware-dictionary>small{color:var(--accent);font-weight:800}.courseware-dictionary h2{margin:8px 8px 10px 0;font-size:27px;display:inline}.courseware-dictionary>p{color:var(--ink-soft);line-height:1.6}.courseware-dictionary>div{flex-wrap:wrap;gap:6px;margin-top:18px;display:flex}.courseware-page.is-full .courseware-layout>aside,.courseware-page.is-full .courseware-topbar{display:none}.courseware-page.is-full .courseware-layout{background:#171b20;grid-template-columns:1fr;height:100dvh;min-height:0}.courseware-page.is-full .courseware-stage{height:100dvh;min-height:0;padding:16px 0}.courseware-page.is-full .courseware-layout>main{padding:0;position:relative;overflow:hidden}.courseware-page.is-full .courseware-sheet{max-width:calc(100vw - clamp(112px,24vw,360px));box-shadow:0 10px 36px #00000061}.courseware-page.is-full .courseware-controls{display:none}.courseware-ppt-nav{z-index:20;pointer-events:none;position:absolute;inset:0}.courseware-ppt-zone{color:#ffffff8f;cursor:pointer;pointer-events:auto;background:0 0;border:0;place-items:center;width:clamp(56px,12vw,180px);padding:0;transition:background-color .15s,color .15s;display:grid;position:absolute;top:0;bottom:0}.courseware-ppt-zone.is-previous{left:0}.courseware-ppt-zone.is-next{right:0}.courseware-ppt-zone:focus-visible,.courseware-ppt-zone:hover:not(:disabled){color:#fff;background:#ffffff12;outline:0}.courseware-ppt-zone:disabled{color:#ffffff26;cursor:default}.courseware-ppt-page{color:#ffffffd1;border-radius:4px;padding:4px 9px;line-height:1.4;bottom:12px;left:50%;transform:translate(-50%)}.courseware-ppt-exit,.courseware-ppt-page{background:#0a0e12b8;font-size:11px;position:absolute}.courseware-ppt-exit{color:#fff;cursor:pointer;pointer-events:auto;border:0;border-radius:4px;justify-content:center;align-items:center;gap:6px;min-width:38px;height:38px;padding:0 11px;display:inline-flex;top:12px;right:12px}.courseware-ppt-exit:focus-visible,.courseware-ppt-exit:hover{outline-offset:2px;background:#ffffff29;outline:2px solid #ffffffb3}.teacher-courseware-preview{border:1px solid var(--line);background:var(--page);overflow:hidden}.teacher-courseware-preview .courseware-topbar{position:relative}.teacher-courseware-preview .courseware-layout{min-height:680px}.teacher-courseware-preview .courseware-stage{min-height:590px}.teacher-courseware-preview.is-full{z-index:100;border:0;position:fixed;inset:0}.teacher-courseware-preview.is-full .courseware-layout{background:#171b20;min-height:calc(100dvh - 58px)}.teacher-courseware-preview.is-full .courseware-stage{min-height:calc(100dvh - 132px)}.teacher-material-preview{border:1px solid var(--line);width:min(980px,100%);margin:0 auto 48px}.teacher-reading-preview{padding:clamp(24px,5vw,64px)}.teacher-reading-preview>header{border-bottom:2px solid var(--ink);padding-bottom:20px}.teacher-reading-preview>header small{color:var(--accent);font-size:10px;font-weight:800}.teacher-reading-preview>header h2{letter-spacing:0;margin:6px 0 0;font-size:27px}.teacher-reading-preview .reading-prose{max-width:720px;margin:32px auto 0}.teacher-video-preview{grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);min-height:560px;display:grid}.teacher-video-preview>video{-o-object-fit:contain;object-fit:contain;background:#111;width:100%;height:100%;max-height:680px}.teacher-video-preview>article{border-left:1px solid var(--line);min-width:0}.teacher-video-preview>article>header{border-bottom:1px solid var(--line);justify-content:space-between;padding:13px 15px;font-weight:800;display:flex}.teacher-video-preview>article>header small{color:var(--ink-muted)}.teacher-video-preview>article>div{max-height:620px;overflow-y:auto}.teacher-video-preview p{border-bottom:1px solid var(--line);margin:0;padding:12px 15px;line-height:1.55}.teacher-video-preview p small,.teacher-video-preview p span{display:block}.teacher-video-preview p small{color:var(--ink-muted);margin-top:3px}.teacher-exercise-preview{border:1px solid var(--line);background:#fff;width:min(920px,100%);margin:0 auto 48px;padding:30px clamp(18px,5vw,66px) 50px}.teacher-exercise-preview>header{border-bottom:2px solid var(--ink);padding-bottom:24px}.teacher-exercise-preview>header small{color:var(--accent);text-transform:uppercase;font-size:10px;font-weight:800}.teacher-exercise-preview>header p{color:var(--ink-soft);white-space:pre-wrap;margin:10px 0;line-height:1.7}.teacher-exercise-preview>header span{color:var(--ink-muted);font-size:11px}.exercise-question--preview{border-bottom:1px solid var(--line);margin-top:0;padding-block:28px}.exercise-question--preview>header{align-items:center;gap:8px;margin-bottom:14px;display:flex}.exercise-question--preview>header>b{aspect-ratio:1;background:var(--ink);color:#fff;place-items:center;width:28px;font-size:12px;display:grid}.exercise-question--preview>header>span{color:var(--accent);font-size:11px;font-weight:800}.exercise-question--preview>header small{color:var(--ink-muted);margin-left:7px}.exercise-question--preview input:not([type=radio]),.exercise-question--preview select,.exercise-question--preview textarea{border:1px solid var(--line-strong);background:var(--surface-soft);max-width:100%;color:var(--ink-muted);border-radius:4px;padding:10px}.exercise-preview-media,.exercise-preview-section-media{border-left:3px solid var(--accent);background:var(--surface-soft);align-items:center;gap:10px;margin:18px 0;padding:12px;display:flex}.exercise-preview-media audio,.exercise-preview-media video,.exercise-preview-section-media audio,.exercise-preview-section-media video{width:100%;max-height:360px}.exercise-preview-upload{border:1px dashed var(--line-strong);min-height:90px;color:var(--ink-muted);align-content:center;place-items:center;gap:6px;display:grid}.gender-topbar>span{align-items:center;gap:3px;font-size:11px;font-weight:800;display:inline-flex}.gender-topbar>span.is-right{color:var(--success)}.gender-topbar>span.is-wrong{color:var(--danger)}.gender-stage{place-items:center;min-height:calc(100vh - 62px);padding:24px;display:grid}.gender-done,.gender-ready{text-align:center;justify-items:center;gap:12px;display:grid}.gender-ready>small{color:var(--accent);text-transform:uppercase;font-weight:800}.gender-done h1,.gender-ready h1{letter-spacing:0;margin:0;font-size:32px}.gender-done p,.gender-ready p{color:var(--ink-muted);margin:0}.gender-card{border:1px solid var(--line);text-align:center;background:#fff;width:min(560px,100%);padding:42px 34px 28px}.gender-timer{background:var(--surface-muted);height:4px;margin:-24px 0 30px;overflow:hidden}.gender-timer span{background:var(--accent);height:100%;transition:width .1s linear;display:block}.gender-word{color:var(--ink);font:700 42px/1.2 var(--font-serif);cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;display:inline-flex}.gender-card>p{min-height:24px;color:var(--ink-soft)}.gender-card>div:not(.gender-timer){grid-template-columns:repeat(3,1fr);gap:10px;margin:34px 0 24px;display:grid}.gender-card>div>button{border:1px solid var(--line-strong);min-height:68px;color:var(--ink);font:700 20px var(--font-serif);cursor:pointer;background:#fff}.gender-card>div>button:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.gender-card>div>button.is-picked{border-color:var(--danger);background:#fff0ef}.gender-card>div>button.is-answer{border-color:var(--success);background:#edf8f0}.gender-card>small{color:var(--ink-muted)}.gender-card kbd{border:1px solid var(--line);background:var(--surface-soft);font:inherit;padding:2px 5px}.gender-card--embedded{margin:40px auto}.forest-section>header small{color:var(--ink-muted);margin-left:auto}.forest-section>div{flex-wrap:wrap;align-items:center;gap:15px 18px;min-height:110px;padding:20px;display:flex}.forest-section>div>button{--size:calc(34px + var(--familiarity)*.18px);min-width:var(--size);min-height:var(--size);color:var(--ink-soft);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;padding:5px;display:inline-flex}.forest-section>div>button i{width:clamp(8px,calc(var(--size)*.32),24px);aspect-ratio:1;background:#9abca3;border-radius:50% 2px 50% 50%;transform:rotate(-20deg)}.forest-section>div>button.is-known i{background:#d3ad42}.forest-section>div>button.is-familiar i{background:#4f8c69}.forest-section>div>button.is-unknown i{background:#c9d8cd}.forest-section>div>button span{font-size:clamp(10px,calc(10px + var(--familiarity)*.035px),14px)}.forest-section>div>button:hover{color:var(--accent);transform:translateY(-1px)}.teacher-map-select{border:1px solid var(--line-strong);min-height:36px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:0 10px}.teacher-map-stage{background:#0f2942;height:min(62vh,620px);min-height:420px;margin-bottom:16px;position:relative;overflow:hidden}.teacher-map-stage .journey-map-canvas{height:100%}.teacher-map-stage>aside{z-index:10;color:#fff;background:#0c1f31f0;border:1px solid #fff3;width:min(320px,100% - 28px);max-height:70%;padding:15px;position:absolute;bottom:14px;right:14px;overflow:auto}.teacher-map-stage>aside>small{color:#9fc0dc;font-size:10px}.teacher-map-stage>aside h2{letter-spacing:0;margin:4px 0 12px;font-size:17px}.teacher-map-stage>aside>a{color:#fff;border-top:1px solid #ffffff1f;justify-content:space-between;align-items:center;gap:8px;padding:9px 0;text-decoration:none;display:flex}.teacher-map-stage>aside small,.teacher-map-stage>aside strong{display:block}.teacher-map-stage>aside small{color:#9fc0dc;margin-top:2px;font-size:10px}.teacher-plaza-add>div{grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:12px;padding:12px;display:grid}.teacher-plaza-add form{align-items:end;gap:8px;display:flex}.teacher-plaza-add label{min-width:0;color:var(--ink-muted);flex:1;gap:4px;font-size:10px;font-weight:700;display:grid}.teacher-plaza-add input,.teacher-plaza-add select,.teacher-plaza-items select,.teacher-plaza-rename input{border:1px solid var(--line-strong);min-height:35px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:0 8px}.teacher-plaza-group>header{justify-content:space-between}.teacher-plaza-group>header>div{gap:3px;display:flex}.teacher-plaza-group>header small{color:var(--ink-muted)}.teacher-plaza-rename{border-bottom:1px solid var(--line);gap:7px;padding:10px 12px;display:flex}.teacher-plaza-rename input{flex:1}.teacher-plaza-items article{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1fr) 32px 32px 140px 32px;align-items:center;gap:5px;min-height:56px;padding:8px 12px;display:grid}.teacher-plaza-items article:last-child{border-bottom:0}.teacher-plaza-items small,.teacher-plaza-items strong{display:block}.teacher-plaza-items small{color:var(--ink-muted);margin-top:3px}.teacher-save-note{color:var(--success);align-items:center;gap:6px;margin:0 0 12px;font-size:12px;font-weight:700;display:inline-flex}.teacher-settings-form>div{gap:12px;padding:14px;display:grid}.teacher-settings-form>div>label:not(.teacher-radio){color:var(--ink-muted);gap:5px;font-size:11px;font-weight:700;display:grid}.teacher-settings-form input:not([type]),.teacher-settings-form input[type=text]{border:1px solid var(--line-strong);min-height:38px;font:inherit;border-radius:4px;padding:0 9px}.teacher-settings-form p{color:var(--ink-muted);margin:0;font-size:11px}.teacher-settings-form dl{margin:0}.teacher-settings-form dl div{border-top:1px solid var(--line);grid-template-columns:130px 1fr;padding:7px 0;display:grid}.teacher-settings-form dt{color:var(--ink-muted)}.teacher-settings-form dd{margin:0}.teacher-settings-form footer{border-top:1px solid var(--line);justify-content:flex-end;padding:12px;display:flex}.teacher-radio{align-items:flex-start;gap:9px;display:flex}.teacher-radio input{margin-top:3px}.teacher-radio small,.teacher-radio strong{display:block}.teacher-radio small{color:var(--ink-muted);margin-top:3px}.teacher-task-list article{border-bottom:1px solid var(--line)}.teacher-task-list article>button{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border:0;grid-template-columns:12px minmax(0,1fr) 48px;align-items:center;gap:10px;padding:13px 14px;display:grid}.teacher-task-list article>button>i{background:var(--line-strong);border-radius:50%;width:8px;height:8px}.teacher-task-list article.is-running>button>i{background:var(--accent)}.teacher-task-list article.is-done>button>i{background:var(--success)}.teacher-task-list article.is-error>button>i{background:var(--danger)}.teacher-task-list small,.teacher-task-list strong{display:block}.teacher-task-list small{color:var(--ink-muted);margin-top:3px}.teacher-task-list article>button>b{text-align:right;font-size:11px}.teacher-task-progress{background:var(--surface-muted);height:3px}.teacher-task-progress i{background:var(--accent);height:100%;display:block}.teacher-task-list dl{background:var(--surface-soft);margin:0;padding:12px 44px}.teacher-task-list dl div{grid-template-columns:90px minmax(0,1fr);padding:4px 0;display:grid}.teacher-task-list dt{color:var(--ink-muted)}.teacher-task-list dd{margin:0}.teacher-task-list dl>a{color:var(--accent);align-items:center;gap:4px;margin-top:8px;display:inline-flex}.teacher-report-list article{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1fr) auto 32px;align-items:center;gap:8px;padding:12px 14px;display:grid}.teacher-report-list article:last-child{border-bottom:0}.teacher-report-list article span>em,.teacher-report-list article span>small,.teacher-report-list article span>strong{display:block}.teacher-report-list article span>small{color:var(--danger);font-weight:700}.teacher-report-list article span>strong{margin-top:3px}.teacher-report-list article p{margin:5px 0}.teacher-report-list article em{color:var(--ink-muted);font-size:10px;font-style:normal}.teacher-pron-list article{border-bottom:1px solid var(--line);grid-template-columns:34px minmax(0,1fr) 112px auto;align-items:center;gap:9px;min-height:58px;padding:9px 14px;display:grid}.teacher-pron-list article:last-child{border-bottom:0}.teacher-pron-list article>span small,.teacher-pron-list article>span strong{display:block}.teacher-pron-list article>span small{color:var(--ink-muted);margin-top:3px}.teacher-pron-list label{color:var(--ink-muted);align-items:center;gap:7px;font-size:11px;font-weight:700;display:inline-flex}.teacher-pron-list input[type=file]{width:min(240px,32vw);font:inherit;font-size:10px}.teacher-pagehead--compact{align-items:flex-end}.teacher-teaching-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:12px;display:grid}.teacher-teaching-grid>a{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:6px;grid-template-columns:38px minmax(0,1fr) 16px;align-items:start;gap:10px;padding:14px;text-decoration:none;display:grid;position:relative}.teacher-teaching-grid>a:hover{border-color:var(--accent)}.teacher-teaching-grid>a>span small,.teacher-teaching-grid>a>span strong{display:block}.teacher-teaching-grid>a>span small{color:var(--ink-muted);margin-top:4px}.teacher-teaching-grid dl{grid-column:2/-1;grid-template-columns:repeat(3,1fr);gap:6px;margin:4px 0 0;display:grid}.teacher-teaching-grid dl div{color:var(--ink-muted);grid-template-columns:15px 1fr auto;align-items:center;gap:4px;display:grid}.teacher-teaching-grid dd{color:var(--ink);margin:0;font-weight:800}.teacher-lesson-list>a{border-bottom:1px solid var(--line);min-height:62px;color:var(--ink);grid-template-columns:36px minmax(0,1fr) auto 90px 16px;align-items:center;gap:10px;padding:9px 14px;text-decoration:none;display:grid}.teacher-lesson-list>a:last-child{border-bottom:0}.teacher-lesson-list>a:hover{background:var(--surface-soft)}.teacher-lesson-list small,.teacher-lesson-list strong{display:block}.teacher-lesson-list small{color:var(--ink-muted)}.teacher-lesson-list b{color:var(--warning);align-items:center;gap:4px;font-size:11px;display:inline-flex}.teacher-lesson-list b.is-done{color:var(--success)}.teacher-class-lessons>a{border-bottom:1px solid var(--line);min-height:58px;color:var(--ink);justify-content:space-between;align-items:center;gap:16px;padding:10px 14px;text-decoration:none;display:flex}.teacher-class-lessons>a:last-child{border-bottom:0}.teacher-class-lessons>a:hover{background:var(--surface-soft)}.teacher-class-lessons small,.teacher-class-lessons strong{display:block}.teacher-class-lessons small{color:var(--ink-muted);margin-top:3px}.teacher-class-lessons em{color:var(--ink-muted);white-space:nowrap;font-size:12px;font-style:normal}.teacher-teaching-source>div{padding:14px}.teacher-teaching-video{grid-template-columns:minmax(300px,1fr) minmax(240px,.7fr);gap:14px;display:grid}.teacher-teaching-video video{background:#111;width:100%;max-height:420px}.teacher-teaching-video ol{max-height:420px;margin:0;padding-left:28px;overflow:auto}.teacher-teaching-video li{border-bottom:1px solid var(--line);padding:6px}.teacher-teaching-video li small,.teacher-teaching-video li strong{display:block}.teacher-teaching-video li small{color:var(--ink-muted)}.teacher-teaching-questions>article{border-top:1px solid var(--line);grid-template-columns:28px minmax(0,1fr);gap:8px;padding:12px 0;display:grid}.teacher-teaching-questions>article>b{color:var(--accent)}.teacher-teaching-questions article span>em,.teacher-teaching-questions article span>small,.teacher-teaching-questions article span>strong{display:block}.teacher-teaching-questions article span>small{color:var(--ink-muted);margin-top:3px}.teacher-teaching-questions ul{gap:4px;margin:9px 0;padding:0;list-style:none;display:grid}.teacher-teaching-questions li{border:1px solid var(--line);padding:6px 8px}.teacher-teaching-questions li.is-correct{background:#edf8f0;border-color:#8fc4a1}.teacher-teaching-questions em{color:var(--success);font-style:normal;font-weight:700}.teacher-handout-editor{border:1px solid var(--line);background:#fff;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:620px;display:grid}.teacher-handout-editor>article,.teacher-handout-editor>div{grid-template-rows:44px minmax(0,1fr);min-width:0;margin:0;display:grid}.teacher-handout-editor>article{border-left:1px solid var(--line)}.teacher-handout-editor header{border-bottom:1px solid var(--line);background:var(--surface-soft);justify-content:space-between;align-items:center;padding:0 13px;display:flex}.teacher-handout-editor h2{letter-spacing:0;margin:0;font-size:13px}.teacher-handout-editor header span{color:var(--success);font-size:10px;font-weight:700}.teacher-handout-editor textarea{resize:none;width:100%;min-height:575px;color:var(--ink);background:#fbfcfd;border:0;outline:0;padding:18px;font:13px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace}.teacher-handout-editor .reading-prose{min-height:575px;padding:22px;line-height:1.8;overflow:auto}.teacher-handout-editor .reading-prose img{max-width:100%}.teacher-tabs{border-bottom:1px solid var(--line);gap:2px;margin:0 0 14px;display:flex}.teacher-tabs button{min-height:38px;color:var(--ink-muted);font:inherit;cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;align-items:center;gap:6px;padding:0 14px;font-weight:700;display:inline-flex}.teacher-tabs button.is-active{border-bottom-color:var(--accent);color:var(--accent)}.teacher-table-select{border:1px solid var(--line-strong);width:min(250px,100%);min-height:34px;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:0 7px}.teacher-live-classes article{border-bottom:1px solid var(--line);grid-template-columns:36px minmax(0,1fr) auto auto;align-items:center;gap:11px;min-height:66px;padding:10px 14px;display:grid}.teacher-live-classes article:last-child{border-bottom:0}.teacher-live-classes article>span small,.teacher-live-classes article>span strong{display:block}.teacher-live-classes article>span small{color:var(--ink-muted);margin-top:3px}.teacher-live-classes article>span:nth-child(3){color:var(--ink-muted);align-items:center;gap:5px;font-size:11px;display:inline-flex}.teacher-vocab-diagnostics{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:14px;display:grid}.teacher-vocab-diagnostics>div{border:1px solid var(--line);background:#fff;flex-wrap:wrap;gap:6px;padding:10px 12px;display:flex}.teacher-vocab-diagnostics header{width:100%;color:var(--danger);align-items:center;gap:5px;margin-bottom:2px;font-weight:800;display:flex}.teacher-vocab-diagnostics>div:last-child header{color:var(--warning)}.teacher-vocab-diagnostics>div>span{border:1px solid var(--line);border-radius:3px;align-items:center;gap:5px;padding:4px 6px;display:inline-flex}.teacher-vocab-diagnostics small{color:var(--ink-muted)}.teacher-vocab-layout{grid-template-columns:minmax(0,1fr) 250px;align-items:start;gap:14px;display:grid}.teacher-vocab-layout>aside{gap:12px;display:grid}.teacher-vocab-filters{border-bottom:1px solid var(--line);gap:3px;padding:7px 10px;display:flex;overflow-x:auto}.teacher-vocab-filters button{border:1px solid var(--line);color:var(--ink-muted);font:inherit;cursor:pointer;background:#fff;border-radius:3px;flex:none;padding:5px 8px}.teacher-vocab-filters button.is-active{border-color:var(--accent);color:var(--accent);background:#edf6fd}.teacher-vocab-filters b{margin-left:3px}.teacher-vocab-cells{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;padding:10px;display:grid}.teacher-vocab-cells>button{border:1px solid var(--line);min-width:0;color:var(--ink);text-align:left;font:inherit;cursor:pointer;background:#fff;border-top:3px solid #a9c0ae;border-radius:4px;gap:3px;padding:9px;display:grid}.teacher-vocab-cells>button.is-known{border-top-color:#d0a638}.teacher-vocab-cells>button.is-familiar{border-top-color:#4f8c69}.teacher-vocab-cells>button.is-unknown{border-top-color:#c4cbd0}.teacher-vocab-cells>button.is-inactive{opacity:.55}.teacher-vocab-cells small,.teacher-vocab-cells span,.teacher-vocab-cells strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.teacher-vocab-cells small,.teacher-vocab-cells span{color:var(--ink-muted);font-size:9px}.teacher-vocab-cells i{background:var(--surface-muted);height:3px;overflow:hidden}.teacher-vocab-cells i b{background:var(--accent);height:100%;display:block}.teacher-vocab-stats{grid-template-columns:repeat(2,1fr);margin:0;padding:8px;display:grid}.teacher-vocab-stats div{border-bottom:1px solid var(--line);padding:9px}.teacher-vocab-stats dt{color:var(--ink-muted)}.teacher-vocab-stats dd{margin:2px 0 0;font-size:18px;font-weight:900}.teacher-vocab-schedule form{grid-template-columns:minmax(0,1fr) auto;gap:6px;padding:10px;display:grid}.teacher-vocab-schedule form label{color:var(--ink-muted);align-items:center;gap:5px;display:flex}.teacher-vocab-schedule form input{border:1px solid var(--line-strong);width:80px;min-height:35px;font:inherit;border-radius:4px;padding:0 7px}.teacher-vocab-schedule>button{width:calc(100% - 20px);margin:0 10px 8px}.teacher-vocab-sheet{z-index:80;border-left:1px solid var(--line);background:#fff;width:min(390px,92vw);height:100dvh;padding:18px;position:fixed;top:0;right:0;overflow:auto;box-shadow:-12px 0 35px #19232b26}.teacher-vocab-sheet>header{justify-content:space-between;align-items:center;font-size:20px;display:flex}.teacher-vocab-sheet dl{margin:18px 0}.teacher-vocab-sheet dl div{border-top:1px solid var(--line);grid-template-columns:80px 1fr;padding:8px 0;display:grid}.teacher-vocab-sheet dt{color:var(--ink-muted)}.teacher-vocab-sheet dd{margin:0}.teacher-vocab-sheet>div{flex-wrap:wrap;gap:6px;display:flex}.teacher-vocab-sheet>div span{border:1px solid var(--line);gap:7px;padding:5px 7px;display:inline-flex}.teacher-vocab-sheet span.is-inactive{opacity:.5}.teacher-vocab-sheet small{color:var(--ink-muted)}.teacher-unit-kpis{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.teacher-unit-kpis>div{min-width:0}.teacher-unit-kpis strong{font-size:13px!important}.teacher-unit-summary{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));display:grid}.teacher-unit-summary>div{border-right:1px solid var(--line);place-content:center;justify-items:center;min-height:76px;padding:10px;display:grid}.teacher-unit-summary>div:last-child{border-right:0}.teacher-unit-summary strong{font-size:22px}.teacher-unit-summary small{color:var(--ink-muted);margin-top:3px}.teacher-unit-quiz article{border-bottom:1px solid var(--line);grid-template-columns:28px minmax(0,1fr);gap:8px;padding:11px 14px;display:grid}.teacher-unit-quiz article>b{color:var(--ink-muted)}.teacher-unit-quiz article.is-right>b{color:var(--success)}.teacher-unit-quiz article.is-wrong>b{color:var(--danger)}.teacher-unit-quiz em,.teacher-unit-quiz small,.teacher-unit-quiz strong{display:block}.teacher-unit-quiz small{color:var(--ink-muted);margin-top:5px}.teacher-unit-quiz em{color:var(--success);margin-top:2px;font-style:normal}.spinner{border:2px solid var(--line-strong);border-top-color:var(--accent);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(1turn)}}.live2-page{margin:0}.live2,.live2-page{background:var(--page);overflow:hidden}.live2{height:100dvh;color:var(--ink);grid-template-rows:auto auto minmax(0,1fr) auto;gap:9px;padding:10px 12px;display:grid}.live2-loading{min-height:100dvh;color:var(--ink-muted);place-content:center;justify-items:center;gap:10px;display:grid}.live2-lobby{z-index:100;background:var(--page);place-items:center;padding:16px;display:grid;position:fixed;inset:0}.live2-lobby>div{border:1px solid var(--line);background:#fff;border-radius:7px;gap:14px;width:min(430px,100%);padding:22px;display:grid;box-shadow:0 12px 35px #19232b1f}.live2-lobby>div>header{align-items:center;gap:8px;font-size:16px;display:flex}.live2-lobby>div>p{color:var(--ink-muted);text-align:center;margin:0}.lobby-preview{aspect-ratio:4/3;color:#fff;background:#1d2228;border-radius:5px;place-items:center;font-size:30px;font-weight:800;display:grid;position:relative;overflow:hidden}.lobby-preview video,.lobby-preview>div{-o-object-fit:cover;object-fit:cover;position:absolute;inset:0;width:100%!important;height:100%!important}.lobby-preview>small{z-index:2;background:#0000008c;padding:3px 7px;font-size:10px;position:absolute;bottom:8px;left:8px}.live2-lobby__devices{grid-template-columns:1fr 1fr;gap:8px;display:grid}.live2-controls button,.live2-lobby__devices button{border:1px solid var(--line-strong);min-height:38px;color:var(--ink);font:inherit;cursor:pointer;background:#fff;border-radius:5px;justify-content:center;align-items:center;gap:6px;display:inline-flex}.live2-controls button.is-off,.live2-lobby__devices button.is-off{color:var(--danger);background:#fff4ef;border-color:#e6c4b7}.live2-enter{width:100%}.live2-back{color:var(--ink-muted);font:inherit;cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;gap:5px;padding:4px;display:inline-flex}.live2-ended,.live2-joining{justify-items:center}.live2-ended{text-align:center}.live2-ended>span{aspect-ratio:1;width:50px;color:var(--success);background:#edf8f0;border-radius:50%;place-items:center;display:grid}.live2-ended h2{letter-spacing:0;margin:0;font-size:20px}.live2-top{border:1px solid var(--line);background:#fff;border-radius:5px;justify-content:space-between;min-height:44px;padding:6px 11px}.live2-top,.live2-top>div{align-items:center;display:flex}.live2-top>div{gap:7px;min-width:0}.live2-top i{background:#d84949;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #f9dede}.live2-top span{color:var(--ink-muted)}.live2-top b{color:var(--ink-muted);gap:4px;margin-left:5px;font-size:11px}.live2-audio,.live2-top b{align-items:center;display:inline-flex}.live2-audio{z-index:120;background:var(--accent);color:#fff;font:inherit;cursor:pointer;border:0;border-radius:18px;gap:6px;padding:9px 15px;font-weight:700;position:fixed;top:14px;left:50%;transform:translate(-50%);box-shadow:0 5px 18px #0f6cbf4d}.live2-members{border:1px solid var(--line);background:#fff;border-radius:5px;padding:7px 9px}.live2-members>header{color:var(--ink-muted);align-items:center;gap:5px;margin-bottom:5px;font-size:10px;display:flex}.live2-members>div{align-items:flex-start;gap:8px;display:flex;overflow-x:auto}.live2-members>div>p{color:var(--ink-muted);margin:20px 10px}.live2-tile{flex:0 0 126px;min-width:0}.live2-tile.is-teacher{flex-basis:150px;margin-left:auto}.live2-tile>div{aspect-ratio:16/9;color:#fff;background:#1c2228;border-radius:4px;place-items:center;width:100%;font-size:20px;font-weight:800;display:grid;position:relative;overflow:hidden}.live2-tile.is-teacher>div{outline:2px solid #78a590}.live2-tile.is-speaking>div{outline:2px solid var(--success)}.live2-tile>div>div,.live2-tile>div>video{-o-object-fit:cover;object-fit:cover;position:absolute;inset:0;width:100%!important;height:100%!important}.live2-tile small{min-height:18px;color:var(--ink-soft);white-space:nowrap;text-overflow:ellipsis;align-items:center;gap:3px;display:flex;overflow:hidden}.live2-main{grid-template-columns:minmax(0,1fr) 300px;gap:9px;min-height:0;display:grid}.live2-stage{border:1px solid var(--line);background:#fff;border-radius:5px;flex-direction:column;gap:9px;min-width:0;min-height:0;padding:10px;display:flex;overflow:hidden}.live2-stagebar{border-bottom:1px solid var(--line);align-items:center;gap:7px;min-height:34px;padding-bottom:8px;display:flex}.live2-stagebar>span{flex:1}.live2-stagebar>b{color:var(--success);align-items:center;gap:3px;font-size:11px;display:inline-flex}.live2-lessons{align-content:start;gap:5px;min-height:0;display:grid;overflow:auto}.live2-lessons>header{color:var(--ink-muted);align-items:center;gap:5px;font-size:11px;display:flex}.live2-lessons>button{border:1px solid var(--line);min-height:46px;color:var(--ink);text-align:left;font:inherit;cursor:pointer;background:#fff;border-radius:4px;grid-template-columns:64px minmax(0,1fr) auto;align-items:center;gap:8px;padding:7px 10px;display:grid}.live2-lessons>button.is-current,.live2-lessons>button:hover{border-color:var(--accent);background:#f2f8fd}.live2-lessons>button small{color:var(--ink-muted)}.live2-lessons>button b{color:var(--ink-muted);font-size:10px}.live2-courseware{flex-direction:column;flex:1;gap:8px;min-height:0;display:flex}.live2-courseware>header{align-items:center;gap:7px;display:flex}.live2-courseware>header small{background:var(--surface-soft);color:var(--ink-muted);padding:2px 6px}.live2-quizbar{border-bottom:1px solid var(--line);align-items:center;gap:7px;padding-bottom:7px;display:flex}.live2-cwbody{flex:1;width:100%;max-width:760px;min-height:0;margin:0 auto;padding:5px 10px 18px;position:relative;overflow:auto}.live2-cwbody .reading-prose{line-height:1.8}.live2-cwbody img{max-width:100%}.live2-empty{color:var(--ink-muted);flex:1;place-content:center;justify-items:center;gap:8px;display:grid}.live2-video{gap:8px;display:grid;position:relative}.live2-video video{background:#111;width:100%;max-height:48vh}.live2-video>button{z-index:3;color:#fff;height:min(48vh,420px);font:inherit;cursor:pointer;background:#0009;border:0;position:absolute;inset:0 0 auto}.live2-video ol{margin:0;padding-left:28px}.live2-video li{border-bottom:1px solid var(--line);padding:6px}.live2-video li small,.live2-video li strong{display:block}.live2-video li small{color:var(--ink-muted)}.live2-exercise{gap:11px;display:grid}.live2-exercise>p{white-space:pre-wrap;margin:0}.live2-exercise>article{border-bottom:1px dashed var(--line-strong);gap:7px;padding-bottom:11px;line-height:1.7;display:grid}.live2-exercise>article>span>b{color:var(--ink-muted);margin-right:5px}.live2-exercise input,.live2-exercise textarea{border:1px solid var(--line-strong);font:inherit;border-radius:3px;padding:6px 8px}.live2-gap{width:90px;margin:0 3px;border:0!important;border-bottom:1px solid var(--accent)!important;border-radius:0!important}.live2-options{gap:4px;display:grid}.live2-options label{align-items:center;gap:6px;display:flex}.live2-exercise em,.live2-options label.is-correct{color:var(--success);font-weight:700}.live2-exercise em{font-style:normal}.live2-exercise footer{justify-content:flex-end;align-items:center;display:flex}.live2-exercise footer span{color:var(--success);align-items:center;gap:4px;display:inline-flex}.live2-exercise aside{border-top:1px solid var(--line);flex-wrap:wrap;gap:6px;padding-top:9px;display:flex}.live2-exercise aside>strong{width:100%}.live2-exercise aside>span{background:var(--surface-soft);padding:3px 7px;font-size:10px}.live2-cursor{z-index:5;pointer-events:none;position:absolute}.live2-cursor:before{content:"";background:var(--success);border-radius:50%;width:16px;height:16px;position:absolute;top:-8px;left:-8px;box-shadow:0 0 0 5px #38815233}.live2-cursor.is-teacher:before{background:#d84949;box-shadow:0 0 0 5px #d8494933}.live2-cursor b{background:var(--success);color:#fff;white-space:nowrap;padding:1px 5px;font-size:9px;position:absolute;top:-8px;left:10px}.live2-cursor.is-teacher b{background:#d84949}.live2-chat{border:1px solid var(--line);background:#fff;border-radius:5px;grid-template-rows:36px minmax(0,1fr) auto auto;min-height:0;display:grid;overflow:hidden}.live2-chat>header{border-bottom:1px solid var(--line);background:var(--surface-soft);align-items:center;padding:0 10px;font-weight:700;display:flex}.live2-chat>div{flex-direction:column;gap:6px;min-height:0;padding:9px;display:flex;overflow:auto}.live2-chat article{font-size:11px;line-height:1.5}.live2-chat article strong{margin-right:5px}.live2-chat article.is-teacher strong{color:var(--success)}.live2-chat article img{border:1px solid var(--line);cursor:zoom-in;max-width:140px;max-height:140px;margin-top:4px;display:block}.live2-chat>figure{border-top:1px solid var(--line);background:var(--surface-soft);align-items:center;gap:6px;margin:0;padding:6px;display:flex}.live2-chat>figure img{max-width:50px;max-height:50px}.live2-chat>form{border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr) 32px 32px;gap:5px;padding:7px;display:grid}.live2-chat>form>input{border:1px solid var(--line-strong);min-width:0;font:inherit;border-radius:4px;padding:0 8px}.live2-controls{border:1px solid var(--line);background:#fff;border-radius:5px;justify-content:center;align-items:center;gap:7px;min-height:46px;padding:4px 9px;display:flex;position:relative}.live2-controls button{min-height:34px;padding:0 13px}.live2-controls button.is-on{color:var(--success);background:#edf8f0;border-color:#9bc1a9}.live2-controls>span{color:var(--ink-muted);font-size:10px;position:absolute;right:10px}.live2-controls>span:before{content:"";background:var(--line-strong);border-radius:50%;width:7px;height:7px;margin-right:5px;display:inline-block}.live2-controls>span.is-open:before{background:var(--success)}.live2-controls>span.is-closed:before{background:var(--danger)}.teacher-queue-list{display:grid}.teacher-queue-list>a,.teacher-queue-list>article{border-bottom:1px solid var(--line);min-height:58px;color:var(--ink);grid-template-columns:22px minmax(0,1fr) auto;align-items:center;gap:8px;padding:9px 14px;text-decoration:none;display:grid}.teacher-admin-materials>a,.teacher-admin-materials>article{grid-template-columns:22px minmax(0,1fr) auto auto}.teacher-queue-list small,.teacher-queue-list strong{display:block}.teacher-queue-list small{color:var(--ink-muted)}.publishing-pagehead{margin-bottom:14px}.publishing-worker{border:1px solid var(--line);border-left:3px solid var(--danger);background:var(--surface);grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:62px;padding:9px 14px;display:grid}.publishing-worker.is-online{border-left-color:var(--success)}.publishing-worker>span{width:32px;height:32px;color:var(--danger);background:var(--danger-soft);place-items:center;display:grid}.publishing-worker.is-online>span{color:var(--success);background:var(--success-soft)}.publishing-worker small,.publishing-worker strong{display:block}.publishing-worker strong{color:var(--ink);font-size:14px}.publishing-worker small{color:var(--ink-muted);margin-top:2px;font-size:12px}.publishing-providers{gap:6px;display:flex}.publishing-providers span{border:1px solid var(--line);color:var(--ink-muted);padding:4px 7px;font-size:11px;font-weight:700}.publishing-providers span.is-on{border-color:color-mix(in srgb,var(--success) 35%,var(--line));color:var(--success);background:var(--success-soft)}.publishing-metrics{border:1px solid var(--line);background:var(--surface);grid-template-columns:repeat(5,minmax(0,1fr));margin:12px 0 18px;display:grid}.publishing-metrics button{border:0;border-right:1px solid var(--line);min-width:0;min-height:66px;color:var(--ink-muted);font:inherit;cursor:pointer;background:0 0;border-bottom:2px solid #0000;justify-content:space-between;align-items:baseline;gap:8px;padding:10px 14px;display:flex}.publishing-metrics button:last-child{border-right:0}.publishing-metrics button.is-active{border-bottom-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.publishing-metrics span{font-size:12px;font-weight:700}.publishing-metrics strong{color:var(--ink);font-size:25px;line-height:1}.publishing-panel>header select{border:1px solid var(--line);background:var(--surface);min-height:32px;color:var(--ink);font:inherit;padding:0 28px 0 9px;font-size:12px}.publishing-panel>header small{color:var(--ink-muted);font-weight:500}.publishing-list{display:grid}.publishing-list>article{border-bottom:1px solid var(--line);grid-template-columns:30px minmax(0,1fr) auto minmax(84px,auto);align-items:center;gap:10px;min-height:68px;padding:10px 14px;display:grid}.publishing-list>article:last-child{border-bottom:0}.publishing-list>article>div:nth-child(2){min-width:0}.publishing-list small,.publishing-list strong{display:block}.publishing-list strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.publishing-list small{color:var(--ink-muted);margin-top:2px;font-size:12px}.publishing-list p{color:var(--danger);margin:4px 0 0;font-size:12px;line-height:1.4}.publishing-list>article>b{color:var(--ink-muted);white-space:nowrap;font-size:12px}.publishing-list>article>b.is-processing{color:var(--accent)}.publishing-list>article>b.is-failed{color:var(--danger)}.publishing-list>article>b.is-published{color:var(--success)}.publishing-state{width:30px;height:30px;color:var(--ink-muted);background:var(--surface-muted);place-items:center;display:grid}.publishing-state.is-processing{color:var(--accent);background:var(--accent-soft)}.publishing-state.is-failed{color:var(--danger);background:var(--danger-soft)}.publishing-state.is-done,.publishing-state.is-published{color:var(--success);background:var(--success-soft)}.publishing-row-actions{justify-content:flex-end;gap:6px;display:flex}.publishing-action-placeholder{width:84px}.teacher-material-layout{grid-template-columns:minmax(0,1fr) 280px;align-items:start;gap:16px;display:grid}.teacher-material-layout>aside,.teacher-material-layout>main{gap:14px;display:grid}.teacher-material-preview{white-space:pre-wrap;max-height:55vh;color:var(--ink);font:inherit;background:#fff;margin:0;padding:18px;line-height:1.8;overflow:auto}.teacher-material-submit .teacher-check{flex-direction:row;grid-column:1/-1;align-items:center;gap:7px;display:flex}.teacher-file-field{border:1px dashed var(--line-strong);background:var(--surface-soft);border-radius:4px;padding:10px}.teacher-file-field input{background:0 0!important;padding:5px!important}.teacher-file-field small{color:var(--ink-muted);font-weight:400}.teacher-file-field i{background:var(--line);border-radius:2px;height:4px;overflow:hidden}.teacher-file-field i b{background:var(--accent);height:100%;transition:width .2s;display:block}.teacher-gates{margin-top:18px}.teacher-gates>header small{color:var(--ink-muted);margin-left:auto;font-weight:400}.teacher-gates>div{display:grid}.teacher-gates article{border-bottom:1px solid var(--line);grid-template-columns:62px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:64px;padding:9px 13px;display:grid}.teacher-gates article:last-child{border-bottom:0}.teacher-gates article>span{color:var(--danger);text-align:center;background:#fff4ef;border:1px solid #ddbdb0;border-radius:3px;padding:3px 5px;font-size:10px;font-weight:800}.teacher-gates article>span.is-open{color:var(--success);background:#edf8f0;border-color:#acd0b9}.teacher-class-gates small,.teacher-class-gates strong,.teacher-gates small,.teacher-gates strong{display:block}.teacher-class-gates small,.teacher-gates small{color:var(--ink-muted);margin-top:3px}.teacher-class-gates article{border-bottom:1px solid var(--line);gap:7px;padding:10px;display:grid}.teacher-class-gates article:last-child{border-bottom:0}.teacher-class-gates article .button{width:100%}.teacher-page-message{background:#fff5f0;border:1px solid #edc7ba;margin:0 0 10px;padding:8px 11px}.teacher-page-message.teacher-success{color:var(--success);background:#eef8f1;border-color:#afd2ba}.teacher-page-message.teacher-notice{color:var(--ink-soft);background:#f2f7fb;border-color:#c9d8e8}.teacher-form-note{color:var(--ink-soft);margin:0;font-size:13px;line-height:1.55}.teacher-material-questions>header{justify-content:space-between;align-items:center;display:flex}.teacher-question-difficulty{gap:3px;display:flex}.teacher-question-difficulty button{border:1px solid var(--line);color:var(--ink-muted);font:inherit;cursor:pointer;background:#fff;border-radius:3px;padding:4px 8px}.teacher-question-difficulty button.is-active{border-color:var(--accent);color:var(--accent);background:#edf6fd;font-weight:800}.teacher-question-tools{border-bottom:1px solid var(--line);background:var(--surface-soft);grid-template-columns:80px minmax(180px,1fr) auto auto;align-items:end;gap:8px;padding:10px 12px;display:grid}.teacher-material-question-list article>label,.teacher-question-tools label{color:var(--ink-muted);gap:4px;font-size:10px;font-weight:700;display:grid}.teacher-material-question-list input,.teacher-material-question-list textarea,.teacher-question-tools input{border:1px solid var(--line-strong);width:100%;color:var(--ink);font:inherit;background:#fff;border-radius:3px;padding:7px 8px}.teacher-material-question-list{gap:8px;padding:10px;display:grid}.teacher-material-question-list>article{border:1px solid var(--line);background:#fff;border-radius:4px;gap:8px;padding:10px;display:grid}.teacher-material-question-list>article>header{align-items:center;gap:8px;display:flex}.teacher-material-question-list>article>header>b{background:var(--surface-muted);border-radius:3px;place-items:center;width:24px;height:24px;display:grid}.teacher-material-question-list>article>header>label{color:var(--ink-muted);align-items:center;gap:5px;margin-left:auto;font-size:10px;display:flex}.teacher-material-question-list>article>header input{width:65px;padding:4px 6px}.teacher-material-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;display:grid}.teacher-material-options>label{border:1px solid var(--line);border-radius:3px;grid-template-columns:18px minmax(0,1fr) 28px;align-items:center;gap:5px;padding:4px;display:grid}.teacher-material-options>label.is-answer{background:#f0f8f2;border-color:#9ec9ae}.teacher-material-options>label>input[type=radio]{width:15px}.teacher-material-questions>footer{border-top:1px solid var(--line);justify-content:flex-end;padding:10px;display:flex}.button.is-disabled{pointer-events:none;opacity:.5}.teacher-exercise-ai{margin-bottom:14px}.teacher-exercise-ai>header{align-items:center;gap:9px;display:flex}.teacher-exercise-ai>header>span{align-items:center;gap:5px;display:inline-flex}.teacher-exercise-ai>header .teacher-tabs{border:0;flex:1;padding:0}.teacher-ai-input{grid-template-columns:90px minmax(0,1fr) auto;align-items:end;gap:8px;padding:12px;display:grid}.teacher-ai-input label{color:var(--ink-muted);gap:4px;font-size:10px;font-weight:700;display:grid}.teacher-ai-chat textarea,.teacher-ai-drafts textarea,.teacher-ai-input input,.teacher-ai-parse textarea{border:1px solid var(--line-strong);width:100%;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:8px}.teacher-ai-parse{gap:8px;padding:12px;display:grid}.teacher-ai-parse .button{justify-self:end}.teacher-ai-chat{grid-template-columns:minmax(0,1fr) 280px;min-height:210px;display:grid}.teacher-ai-chat>div{flex-direction:column;gap:7px;max-height:360px;padding:10px;display:flex;overflow:auto}.teacher-ai-chat article{background:var(--surface-soft);border-radius:4px;max-width:82%;padding:7px 9px}.teacher-ai-chat article.is-user{background:var(--accent);color:#fff;align-self:flex-end}.teacher-ai-chat article p{white-space:pre-wrap;margin:0}.teacher-ai-chat article small{opacity:.75;margin-top:4px;display:block}.teacher-ai-chat>form{border-left:1px solid var(--line);align-content:end;gap:7px;padding:10px;display:grid}.teacher-ai-drafts{border-top:1px solid var(--line);padding:10px}.teacher-ai-drafts>header{color:var(--ink-muted);justify-content:space-between;margin-bottom:7px;display:flex}.teacher-ai-drafts>label{border-top:1px solid var(--line);grid-template-columns:18px minmax(0,1fr);align-items:start;gap:7px;padding:8px 2px;display:grid}.teacher-ai-drafts>label.is-off{opacity:.45}.teacher-ai-drafts em,.teacher-ai-drafts small{color:var(--ink-muted);font-style:normal;display:block}.teacher-ai-drafts textarea{margin:4px 0}.teacher-ai-draft-points{color:var(--ink-muted);align-items:center;gap:6px;margin-top:5px;font-size:10px;display:inline-flex}.teacher-ai-draft-points input{border:1px solid var(--line-strong);width:92px;height:30px;color:var(--ink);background:#fff;border-radius:4px;padding:0 7px}.teacher-ai-drafts>footer{justify-content:flex-end;gap:7px;padding-top:8px;display:flex}.teacher-paper-ai{margin-bottom:14px}.teacher-paper-ai>header{justify-content:space-between;align-items:center;display:flex}.teacher-paper-ai>header>span{align-items:center;gap:6px;display:inline-flex}.teacher-paper-ai__brief{grid-template-columns:repeat(4,minmax(0,1fr));gap:11px;padding:14px;display:grid}.teacher-paper-ai__brief>label{color:var(--ink-muted);align-content:start;gap:5px;font-size:10px;font-weight:750;display:grid}.teacher-paper-ai__brief>label.is-wide{grid-column:1/-1}.teacher-paper-ai__brief input,.teacher-paper-ai__brief textarea,.teacher-paper-draft input,.teacher-paper-draft textarea{border:1px solid var(--line-strong);width:100%;color:var(--ink);font:inherit;background:#fff;border-radius:4px;padding:8px 10px}.teacher-paper-ai__brief textarea,.teacher-paper-draft textarea{resize:vertical;line-height:1.55}.teacher-paper-ai__generate{border-top:1px solid var(--line);grid-column:1/-1;justify-content:space-between;align-items:center;gap:14px;padding-top:12px;display:flex}.teacher-paper-ai__generate p{color:var(--ink-muted);margin:0;font-size:10px}.teacher-paper-ai__error{margin:0 14px 14px}.teacher-paper-draft{border-top:1px solid var(--line-strong)}.teacher-paper-draft>header{background:var(--surface-soft);grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:18px;padding:15px;display:grid}.teacher-paper-draft>header>div{gap:5px;display:grid}.teacher-paper-draft>header small{color:var(--accent);text-transform:uppercase;font-size:9px;font-weight:800}.teacher-paper-draft>header input{border:0;border-bottom:1px solid var(--line-strong);background:0 0;border-radius:0;padding:4px 0;font-size:20px;font-weight:800}.teacher-paper-draft>header dl{grid-template-columns:repeat(4,minmax(60px,auto));margin:0;display:grid}.teacher-paper-draft>header dl>div{border-left:1px solid var(--line);padding:0 13px}.teacher-paper-draft dt{color:var(--ink-muted);font-size:9px}.teacher-paper-draft dd{font-family:var(--font-mono);margin:3px 0 0;font-size:14px;font-weight:800}.teacher-paper-draft__intro{color:var(--ink-muted);gap:5px;padding:13px 15px;font-size:10px;font-weight:750;display:grid}.teacher-paper-draft__sections>article{border-top:2px solid var(--ink);padding:0 15px 16px}.teacher-paper-draft__sections>article.is-off{opacity:.45}.teacher-paper-draft__sections>article>header{grid-template-columns:82px minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px 0 8px;display:grid}.teacher-paper-draft__sections>article>header>label{color:var(--accent);align-items:center;gap:8px;display:flex}.teacher-paper-draft__sections>article>header>input{font-weight:760}.teacher-paper-draft__sections>article>header>span{color:var(--ink-muted);font-size:10px}.teacher-paper-draft__sections>article>textarea{margin-bottom:9px}.teacher-paper-draft__questions{border:1px solid var(--line)}.teacher-paper-draft__questions>section{gap:7px;padding:10px 12px;display:grid}.teacher-paper-draft__questions>section+section{border-top:1px solid var(--line)}.teacher-paper-draft__questions>section.is-off{opacity:.42}.teacher-paper-draft__questions>section>header{align-items:center;gap:9px;display:flex}.teacher-paper-draft__questions>section>header>label:first-child{align-items:center;gap:7px;display:flex}.teacher-paper-draft__questions>section>header>label:first-child b{border:1px solid var(--line-strong);min-width:24px;height:24px;font-family:var(--font-mono);place-items:center;font-size:10px;display:grid}.teacher-paper-draft__questions>section>header>span{color:var(--accent);font-size:9px;font-weight:800}.teacher-paper-draft__questions>section>header>label:last-child{color:var(--ink-muted);align-items:center;gap:6px;margin-left:auto;font-size:9px;display:flex}.teacher-paper-draft__questions>section>header>label:last-child input{width:74px;min-height:30px;padding:4px 6px}.teacher-paper-draft__questions>section>p{color:var(--ink-muted);margin:0;font-size:10px}.teacher-paper-draft>footer{border-top:1px solid var(--line-strong);align-items:center;gap:12px;padding:13px 15px;display:flex}.teacher-paper-draft>footer>span{color:var(--ink-muted);flex:1;font-size:10px}.segmented-control{border:1px solid var(--line-strong);background:var(--surface-muted);padding:2px;display:inline-flex}.segmented-control button{min-height:30px;color:var(--ink-muted);font:inherit;cursor:pointer;background:0 0;border:0;padding:0 10px;font-size:10px;font-weight:750}.segmented-control button.is-active{color:#fff;background:var(--accent)}@media (width<=900px){.student-plaza-grid,.student-vocab-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.student-class-layout,.teacher-class-layout{grid-template-columns:1fr}.teacher-inline-form form{grid-template-columns:1fr 1fr}.teacher-library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-material-layout{grid-template-columns:1fr}.teacher-curriculum-add>div{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-teaching-video{grid-template-columns:1fr}.teacher-vocab-cells{grid-template-columns:repeat(3,minmax(0,1fr))}.live2{height:auto;min-height:100dvh;overflow:visible}.live2-page{overflow:auto}.live2-main{grid-template-columns:1fr}.live2-stage{min-height:560px}.live2-chat{min-height:340px}}@media (width<=640px){.workspace-main.teacher-main{margin-left:0;padding:24px 14px 64px}.workspace-pagehead{flex-wrap:wrap}.workspace-pagehead>div:not(.workspace-pagehead__actions){flex:calc(100% - 58px);min-width:0}.workspace-pagehead__actions{grid-template-columns:repeat(2,minmax(0,1fr));width:100%;margin-left:0;display:grid}.workspace-pagehead__actions>.button,.workspace-pagehead__actions>select{width:100%;min-width:0}.workspace-pagehead__actions>:last-child:nth-child(odd){grid-column:1/-1}.workspace-pagehead h1{font-size:19px}.student-review-strip{grid-template-columns:auto minmax(0,1fr)}.student-review-strip .button,.student-review-strip--link>b{grid-column:1/-1;width:100%}.student-task-row{grid-template-columns:20px 18px minmax(0,1fr) 15px;padding-inline:10px}.student-task-row__due{display:none}.student-vocab-stats{gap:6px}.student-vocab-stats>div{padding-inline:8px}.student-plaza-grid,.student-vocab-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.student-chat__messages article{max-width:88%}.student-chat>form{grid-template-columns:1fr}.student-effort-list>div{grid-template-columns:30px minmax(0,1fr) auto}.student-effort-list>div>small{text-align:left;grid-column:2/-1}.teacher-inline-form form,.teacher-member-picker{grid-template-columns:1fr}.teacher-member-picker .button{grid-column:auto;width:100%}.teacher-chat>form,.teacher-curriculum-add>div,.teacher-form-split,.teacher-inline-create,.teacher-library-grid,.teacher-material-submit>div,.teacher-question-editor>div,.teacher-resource-form>div{grid-template-columns:1fr}.teacher-library-filters{flex-wrap:wrap;width:100%}.teacher-paper-add{flex-direction:column;align-items:stretch}.teacher-paper-sections article{flex-direction:column;align-items:flex-start}.teacher-paper-sections article>div:last-child{justify-content:flex-end;width:100%}.teacher-question-list article{grid-template-columns:34px minmax(0,1fr) 30px;padding-inline:4px}.teacher-plaza-add>div{grid-template-columns:1fr}.teacher-plaza-add form{flex-direction:column;align-items:stretch}.teacher-plaza-items article{grid-template-columns:minmax(0,1fr) repeat(3,30px)}.teacher-plaza-items select{grid-area:2/1/auto/-1}.teacher-pron-list article{grid-template-columns:32px minmax(0,1fr) auto;padding-inline:10px}.teacher-pron-list label{grid-column:2/-1}.teacher-admin-materials>article{grid-template-columns:22px minmax(0,1fr) auto}.teacher-admin-materials>article>.button{grid-column:2/-1;width:100%}.teacher-admin-materials>a{grid-template-columns:22px minmax(0,1fr) auto 16px}.publishing-worker{grid-template-columns:34px minmax(0,1fr)}.publishing-providers{flex-wrap:wrap;grid-column:2}.publishing-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}.publishing-metrics button{border-bottom:1px solid var(--line);min-height:58px}.publishing-metrics button:nth-child(3){border-right:0}.publishing-metrics button:nth-child(4),.publishing-metrics button:nth-child(5){border-bottom:2px solid #0000}.publishing-metrics button.is-active{border-bottom-color:var(--accent)}.publishing-list>article{grid-template-columns:30px minmax(0,1fr) auto}.publishing-list>article>b{grid-area:1/3}.publishing-list>article>.button,.publishing-list>article>.icon-button,.publishing-list>article>.publishing-action-placeholder,.publishing-list>article>.publishing-row-actions{grid-column:2/-1;width:100%}.publishing-row-actions .button{flex:1}.publishing-action-placeholder{display:none}.teacher-pron-list input[type=file]{width:100%}.teacher-teaching-grid{grid-template-columns:1fr;padding:8px}.teacher-lesson-list>a{grid-template-columns:34px minmax(0,1fr) 16px}.teacher-lesson-list>a>b,.teacher-lesson-list>a>small{grid-column:2}.teacher-handout-editor{grid-template-columns:1fr;min-height:0}.teacher-handout-editor>article{border-top:1px solid var(--line);border-left:0}.teacher-handout-editor .reading-prose,.teacher-handout-editor textarea{min-height:460px}.teacher-tabs{overflow-x:auto}.teacher-vocab-diagnostics,.teacher-vocab-layout{grid-template-columns:1fr}.teacher-vocab-cells{grid-template-columns:repeat(2,minmax(0,1fr));padding:7px}.teacher-live-classes article{grid-template-columns:34px minmax(0,1fr)}.teacher-live-classes article>.button,.teacher-live-classes article>span:nth-child(3){grid-column:2}.teacher-gates article{grid-template-columns:58px minmax(0,1fr)}.teacher-gates article .button{grid-column:2;justify-self:start}.teacher-material-options,.teacher-question-tools{grid-template-columns:1fr}.teacher-question-tools .button{width:100%}.teacher-ai-chat,.teacher-ai-input{grid-template-columns:1fr}.teacher-ai-chat>form{border-top:1px solid var(--line);border-left:0}.teacher-paper-ai__brief{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-paper-draft>header{grid-template-columns:1fr}.teacher-paper-draft>header dl{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-paper-draft>header dl>div{border-left:0;border-top:1px solid var(--line);padding:8px 5px}.teacher-paper-draft__sections>article>header{grid-template-columns:72px minmax(0,1fr)}.teacher-paper-draft__sections>article>header>span{grid-column:2}.teacher-paper-draft>footer{flex-direction:column;align-items:stretch}.teacher-paper-draft>footer .button{width:100%}.live2{padding:7px}.live2-top span{display:none}.live2-members>div{padding-bottom:3px}.live2-tile{flex-basis:110px}.live2-tile.is-teacher{flex-basis:128px}.live2-stage{min-height:500px}.live2-stagebar strong{text-overflow:ellipsis;white-space:nowrap;max-width:130px;overflow:hidden}.live2-lessons>button{grid-template-columns:55px minmax(0,1fr)}.live2-lessons>button b{grid-column:2}.live2-controls{flex-wrap:wrap;justify-content:flex-start}.live2-controls button{flex:1;padding-inline:8px}.live2-controls>span{margin-left:auto;position:static}.courseware-topbar{padding-inline:9px}.courseware-topbar .courseware-all-master{display:none}.courseware-page-master{padding-inline:8px}.courseware-layout{grid-template-columns:1fr}.courseware-page>.courseware-layout{grid-template-rows:auto minmax(0,1fr)}.courseware-layout>aside{scrollbar-gutter:auto;border-right:0;border-bottom:1px solid var(--line);gap:6px;padding:7px;display:flex;overflow:auto hidden}.courseware-layout>aside button{flex:0 0 62px;width:62px}.courseware-layout>main{padding:8px}.courseware-stage{align-content:start;min-height:calc(100dvh - 196px)}.courseware-controls{grid-template-columns:1fr auto 1fr;display:grid}.courseware-controls .button{min-width:0;padding-inline:8px}.courseware-controls .button:last-child{grid-column:1/-1}.teacher-courseware-preview .courseware-layout{min-height:0}.teacher-courseware-preview .courseware-stage{min-height:420px}.teacher-exercise-preview{padding:22px 14px 36px}.teacher-video-preview{grid-template-columns:1fr;min-height:0}.teacher-video-preview>video{min-height:240px}.teacher-video-preview>article{border-top:1px solid var(--line);border-left:0}.report-metrics{padding-inline:8px}.report-metrics b{font-size:21px}.report-paper-sections article,.teacher-paper-report article{grid-template-columns:minmax(0,1fr) auto}.report-paper-sections article>em,.teacher-paper-report article>em{grid-column:2}}@media (width<=360px){.teacher-pagehead--student .teacher-pagehead__actions{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-pagehead--student .teacher-pagehead__actions>:nth-child(3){grid-column:1/-1}}