:root{--tb-primary: #6B3BFF;--tb-board: var(--tb-primary);--tb-primary-dark: #5526E6;--tb-primary-tint: #ECE5FF;--tb-brand-secondary: var(--tb-primary-dark);--tb-brand-blue: var(--tb-primary);--tb-sky: #7CC4EA;--tb-sky-tint: #E3F2FB;--tb-sky-text: #1F7FB4;--tb-sun: #FFC93C;--tb-sun-tint: #FFF1C9;--tb-sun-text: #A87800;--tb-pink: #FF6B9A;--tb-pink-tint: #FFE3EC;--tb-pink-text: #D6336C;--tb-mint: #00D48F;--tb-mint-pressed: var(--tb-mint);--tb-mint-deep: var(--tb-ink);--tb-mint-tint: color-mix(in srgb, var(--tb-mint) 12%, var(--tb-surface));--tb-mint-pale: var(--tb-mint);--tb-mint-on-fill: var(--tb-ink);--tb-mint-text: var(--tb-ink);--tb-danger: var(--tb-pink-text);--tb-danger-tint: var(--tb-pink-tint);--tb-danger-hover: var(--tb-pink-tint);--tb-danger-wash: var(--tb-pink-tint);--tb-danger-dot: var(--tb-pink);--tb-warning: var(--tb-sun-text);--tb-warning-tint: var(--tb-sun-tint);--tb-warning-solid: var(--tb-sun);--tb-purple-tint: var(--tb-primary-tint);--tb-ink: #10132B;--tb-ink-mid: var(--tb-ink);--tb-ink-deep: var(--tb-primary-dark);--tb-rail: #0B0E22;--tb-text-strong: var(--tb-ink);--tb-text-secondary: #6B7191;--tb-text-meta: #8A90A8;--tb-text-disabled: var(--tb-text-meta);--tb-divider: #EDEFF7;--tb-border: var(--tb-divider);--tb-border-strong: var(--tb-primary-tint);--tb-border-input: var(--tb-divider);--tb-surface: #FFFFFF;--tb-surface-alt: var(--tb-bg);--tb-bg: #F6F4FD;--tb-chip: var(--tb-divider);--tb-track: var(--tb-divider);--tb-video-black: #000000;--tb-on-dark: var(--tb-surface);--tb-on-dark-secondary: var(--tb-surface);--tb-on-dark-body: var(--tb-surface);--tb-on-dark-rail: var(--tb-sky-tint);--tb-on-dark-meta: var(--tb-surface);--tb-on-dark-disabled: var(--tb-sky);--tb-on-dark-faint: var(--tb-sky);--tb-on-dark-kicker: var(--tb-surface);--tb-grad-brand: linear-gradient(140deg, var(--tb-primary), var(--tb-primary-dark));--tb-grad-briefing: linear-gradient(120deg, var(--tb-primary) 0%, var(--tb-primary) 48%, var(--tb-primary-dark) 100%);--tb-grad-mint: linear-gradient(135deg, var(--tb-mint), var(--tb-mint));--tb-grad-ink: linear-gradient(135deg, var(--tb-primary), var(--tb-primary-dark));--tb-r-pill: 99px;--tb-r-card: 22px;--tb-r-card-sm: 20px;--tb-r-tile: 18px;--tb-r-field: 16px;--tb-r-icon: 15px;--tb-r-icon-sm: 13px;--tb-r-rail: 12px;--tb-r-modal: 26px;--tb-shadow-card: 0 1px 2px color-mix(in srgb, var(--tb-ink) 5%, transparent);--tb-shadow-raised: 0 6px 18px color-mix(in srgb, var(--tb-ink) 10%, transparent);--tb-shadow-primary: 0 8px 20px color-mix(in srgb, var(--tb-primary) 28%, transparent);--tb-shadow-modal: 0 30px 70px color-mix(in srgb, var(--tb-ink) 35%, transparent);--tb-focus-ring: 0 0 0 4px color-mix(in srgb, var(--tb-primary) 10%, transparent);--tb-rail-width: 246px;--tb-gutter: 30px;--tb-font-display: "Bricolage Grotesque", system-ui, sans-serif;--tb-font-ui: "Manrope", system-ui, -apple-system, sans-serif}:root{font-family:var(--tb-font-ui)}*{box-sizing:border-box}body{margin:0;background:var(--tb-bg);color:var(--tb-ink);font-size:14px;-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--tb-font-display);letter-spacing:0;font-weight:700}button{font-family:inherit;cursor:pointer}button,a[href],[role=button]{-webkit-user-select:none;user-select:none;caret-color:transparent}input,textarea,[contenteditable=true],[role=textbox]{-webkit-user-select:text;user-select:text;caret-color:auto}button:disabled{opacity:.55;cursor:not-allowed}:focus-visible{outline:2px solid var(--tb-primary);outline-offset:2px}label{display:block;font-size:11.5px;color:var(--tb-text-secondary);margin:0 0 7px;font-weight:700}input,select,textarea{width:100%;height:46px;padding:0 15px;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-field);font-family:inherit;font-size:14px;font-weight:600;color:var(--tb-ink);background:var(--tb-surface);outline:none;margin-bottom:14px}textarea{height:auto;padding:12px 15px;line-height:1.6;resize:vertical}input::placeholder,textarea::placeholder{color:var(--tb-text-disabled);font-weight:500}input:focus,select:focus,textarea:focus{border-color:var(--tb-primary);box-shadow:var(--tb-focus-ring)}.btn{height:44px;padding:0 20px;border:none;border-radius:var(--tb-r-pill);font-weight:800;font-size:13.5px;background:var(--tb-primary);color:var(--tb-surface);box-shadow:var(--tb-shadow-primary);display:inline-flex;align-items:center;justify-content:center;gap:7px;flex:0 0 auto;white-space:nowrap;transition:background .15s,box-shadow .15s}.btn:hover:not(:disabled){background:var(--tb-primary-dark)}.btn.sm{height:34px;padding:0 14px;font-size:12px;width:auto;box-shadow:none}.btn svg{width:15px;height:15px;flex:0 0 auto}.btn.ghost{background:var(--tb-surface);border:1.5px solid var(--tb-border-strong);color:var(--tb-ink);box-shadow:none}.btn.ghost:hover:not(:disabled){background:var(--tb-bg)}.btn.g{background:var(--tb-mint-tint);color:var(--tb-mint-deep);box-shadow:none}.btn.g:hover:not(:disabled){background:var(--tb-mint-tint)}.btn.a{background:var(--tb-warning-tint);color:var(--tb-warning);box-shadow:none}.btn.r{background:var(--tb-danger-tint);color:var(--tb-danger);box-shadow:none}.btn.r:hover:not(:disabled){background:var(--tb-danger-hover)}.btn.mint{background:var(--tb-mint);color:var(--tb-mint-on-fill);box-shadow:0 12px 30px color-mix(in srgb,var(--tb-mint) 30%,transparent)}.btn.mint:hover:not(:disabled){background:var(--tb-mint-pressed)}.hidden{display:none!important}.login-wrap{min-height:100vh;min-height:100svh;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);background:var(--tb-surface)}.login-brand{display:grid;place-items:center;overflow:hidden;background:var(--tb-board);padding:32px 16px}.login-chalkboard{width:min(100%,740px);aspect-ratio:1;position:relative;isolation:isolate}.login-subject-art,.login-subjects{display:block;width:100%;height:100%}.login-subjects{object-fit:contain;mix-blend-mode:screen;pointer-events:none}.login-logo{position:absolute;left:50%;top:49%;transform:translate(-50%,-57%);width:58%;height:auto;object-fit:contain;clip-path:inset(22% 0 4% 0)}.login-form-area{min-width:0;display:flex;align-items:center;justify-content:center;padding:64px 48px}.login-form{width:380px;max-width:100%;letter-spacing:0}.login-eyebrow{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:700;color:var(--tb-primary);margin-bottom:22px}.login-form h1{font-size:38px;line-height:1.15;letter-spacing:0;margin:0}.login-welcome{color:var(--tb-text-secondary);margin:10px 0 32px;font-size:15px;line-height:1.6}.login-fields{display:grid;gap:22px}.login-fields label{font-size:13px;margin-bottom:9px}.login-fields input{height:54px;margin:0;border-radius:8px;font-size:16px;font-weight:500}.login-password{position:relative}.login-password input{padding-right:54px}.login-password-toggle{position:absolute;inset:5px 5px 5px auto;width:44px;display:grid;place-items:center;border:0;border-radius:5px;background:transparent;color:var(--tb-text-secondary)}.login-password-toggle:hover{background:var(--tb-primary-tint);color:var(--tb-primary)}.login-submit.btn{width:100%;height:54px;margin-top:28px;border-radius:8px;font-size:15px;box-shadow:none;gap:12px}.login-submit.btn svg{width:20px;height:20px}.login-error{color:var(--tb-danger);background:var(--tb-danger-tint);border-radius:8px;padding:12px 14px;margin-top:20px;font-size:13px;line-height:1.5;overflow-wrap:anywhere}@media(max-width:760px){.login-wrap{grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr}.login-brand{padding:8px 0}.login-chalkboard{width:min(100%,540px);aspect-ratio:16 / 9}.login-subject-art{position:absolute;top:0;right:0;bottom:0;left:0}.login-subjects{opacity:.8}.login-logo{width:230px;max-width:60%;top:49%}.login-form-area{padding:32px 26px 44px;align-items:flex-start}.login-eyebrow{margin-bottom:14px;font-size:11px}.login-form h1{font-size:30px}.login-welcome{font-size:14px;margin:8px 0 24px}.login-fields{gap:18px}.login-submit.btn{margin-top:24px}}@media(max-width:380px),(max-height:700px)and (max-width:760px){.login-logo{width:200px}.login-form-area{padding:24px 22px 32px}.login-eyebrow{margin-bottom:10px}.login-welcome{margin-bottom:20px}}.err{color:var(--tb-danger);font-size:12.5px;margin-bottom:10px;min-height:16px;font-weight:600}.form-error{color:var(--tb-danger);background:var(--tb-danger-tint);border-radius:var(--tb-r-field);padding:11px 14px;font-size:13px;font-weight:700;margin-top:8px}.shell{display:grid;grid-template-columns:var(--tb-rail-width) 1fr;min-height:100vh}.side{background:var(--tb-rail);padding:18px 14px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;overflow:hidden}.brand{display:flex;align-items:center;gap:11px;padding:0 6px 16px;flex:none}.brand img{width:40px;height:40px;object-fit:contain;background:var(--tb-surface);border-radius:13px;padding:3px;flex:0 0 auto}.brand img.platform-logo{background:var(--tb-rail)}.brand-copy{display:grid;gap:2px;min-width:0}.brand.platform-brand{flex-direction:column;gap:4px;align-items:center}.brand.platform-brand>img{width:180px;max-width:100%;height:auto;aspect-ratio:694 / 423;background:transparent;padding:0;border-radius:0}.brand.platform-brand .brand-copy{text-align:center}.brand b{font-size:14px;color:var(--tb-on-dark);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.brand small{font-size:10px;color:var(--tb-on-dark-faint);font-weight:700;letter-spacing:.07em;text-transform:uppercase}.rail-classroom{display:flex;align-items:center;gap:9px;height:40px;padding:0 11px;margin-bottom:14px;flex:none;border:0;border-radius:12px;background:var(--tb-ink);color:var(--tb-on-dark-body);font-size:11.5px;font-weight:700;text-align:left;width:100%}.rail-classroom:hover{background:var(--tb-primary-dark)}.rail-classroom>span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rail-classroom svg{flex:0 0 auto}.rail-classroom .lead{color:var(--tb-primary)}.rail-classroom .trail{color:var(--tb-on-dark-faint)}.rail-classroom select{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;margin:0;cursor:pointer}.rail-classroom-wrap{position:relative;flex:none}.side nav{display:grid;gap:2px;flex:1;overflow-y:auto;align-content:start}.nav-group{font-size:9.5px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--tb-on-dark-disabled);padding:14px 10px 7px}.nav-group:first-child{padding-top:0}.side nav button{display:flex;align-items:center;gap:10px;height:36px;padding:0 10px;border:0;border-radius:var(--tb-r-rail);background:transparent;color:var(--tb-on-dark-rail);font-weight:700;font-size:12.5px;text-align:left;width:100%}.side nav button svg{width:17px;height:17px;flex:0 0 auto;color:var(--tb-on-dark-meta)}.side nav button.on{background:var(--tb-primary);color:var(--tb-surface)}.side nav button.on svg{color:var(--tb-surface)}.side nav button:not(.on):hover{background:color-mix(in srgb,var(--tb-surface) 7%,transparent)}.side nav button .label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav-badge{min-width:19px;height:19px;padding:0 5px;border-radius:var(--tb-r-pill);background:var(--tb-danger-dot);color:var(--tb-ink);font-size:10px;font-weight:800;line-height:19px;text-align:center}.side nav button.on .nav-badge{background:var(--tb-surface);color:var(--tb-primary)}.rail-footer{flex:none;margin-top:12px;padding-top:12px;border-top:1px solid var(--tb-ink-mid);display:flex;align-items:center;gap:9px}.rail-footer .avatar{width:30px;height:30px;font-size:12px;background:var(--tb-ink-mid);color:var(--tb-on-dark-secondary)}.rail-footer-copy{flex:1;min-width:0;display:grid;gap:1px}.rail-footer-copy b{font-size:11.5px;color:var(--tb-on-dark);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rail-footer-copy span{font-size:10px;color:var(--tb-on-dark-faint);font-weight:600}.rail-icon-btn{width:28px;height:28px;flex:0 0 auto;border:0;border-radius:9px;background:var(--tb-ink-mid);color:var(--tb-on-dark-meta);display:grid;place-items:center}.rail-icon-btn:hover{background:color-mix(in srgb,var(--tb-surface) 10%,transparent);color:var(--tb-surface)}.main{padding:26px var(--tb-gutter) 40px;min-width:0}.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}.section-head h1{margin:0;font-size:26px;letter-spacing:-.025em}.section-head .sub{margin:5px 0 0;color:var(--tb-text-meta);font-size:12px;font-weight:600}.section-head-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.avatar{width:38px;height:38px;border-radius:50%;background:var(--tb-grad-brand);color:var(--tb-surface);display:flex;align-items:center;justify-content:center;font-weight:800;flex:0 0 auto}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:18px}.metric{background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);padding:16px 18px;box-shadow:var(--tb-shadow-card)}.metric .k{font-size:11.5px;color:var(--tb-text-meta);font-weight:700}.metric .v{font-family:var(--tb-font-display);font-size:28px;font-weight:700;margin-top:8px;letter-spacing:-.02em}.metric .v.amber{color:var(--tb-warning)}.metric .v.green{color:var(--tb-mint-text)}.panel{background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-card);box-shadow:var(--tb-shadow-card);padding:20px;margin-bottom:18px}.panel.inner{box-shadow:none;background:var(--tb-surface-alt);border-radius:var(--tb-r-tile)}.panel h2{margin:0 0 14px;font-size:16px;letter-spacing:-.01em}.panel-subtitle{margin:4px 0 0;color:var(--tb-text-meta);font-size:12px;font-weight:600}.header-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.header-row h2{margin:0}.bar-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}.bar-row .lbl{width:150px;font-size:13px;font-weight:600;color:var(--tb-ink)}.bar-track{flex:1;height:10px;background:var(--tb-track);border-radius:var(--tb-r-pill);overflow:hidden}.bar-fill{height:100%;background:var(--tb-primary);border-radius:var(--tb-r-pill)}.bar-row .n{width:34px;text-align:right;color:var(--tb-text-meta);font-size:12.5px;font-weight:700}.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.tabs button{display:inline-flex;align-items:center;gap:7px;padding:8px 15px;border-radius:var(--tb-r-pill);border:1.5px solid var(--tb-border);background:var(--tb-surface);color:var(--tb-text-secondary);font-size:12.5px;font-weight:700}.tabs button.on{background:var(--tb-primary-tint);color:var(--tb-primary);border-color:var(--tb-primary-tint)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}.toolbar input{margin:0;max-width:280px;height:40px;border-radius:var(--tb-r-pill)}.toolbar.spread{justify-content:space-between}.student-toolbar-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex:1 1 420px;min-width:0}.student-toolbar-actions input{width:min(100%,320px);min-width:190px;max-width:320px}table{width:100%;border-collapse:collapse;background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-card);overflow:hidden;box-shadow:var(--tb-shadow-card)}.table-scroll{width:100%;max-width:100%;overflow-x:auto;border-radius:var(--tb-r-card)}.table-scroll table{min-width:720px}th{text-align:left;font-size:10.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--tb-text-meta);padding:13px 16px;background:var(--tb-surface-alt);border-bottom:1px solid var(--tb-border)}td{padding:13px 16px;border-bottom:1px solid var(--tb-divider);font-size:12.5px;font-weight:600;color:var(--tb-text-secondary);vertical-align:middle}tr:last-child td{border-bottom:none}tbody tr{cursor:pointer}tbody tr:hover{background:var(--tb-surface-alt)}.name b{display:block;color:var(--tb-ink);font-size:13.5px}.name span{color:var(--tb-text-meta);font-size:12px}.badge{display:inline-block;padding:4px 11px;border-radius:var(--tb-r-pill);font-size:10.5px;font-weight:800;letter-spacing:.02em}.badge.PENDING,.badge.DRAFT{background:var(--tb-warning-tint);color:var(--tb-warning)}.badge.APPROVED,.badge.PUSHED,.badge.RELEASED,.badge.READY,.badge.PUBLISHED{background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.badge.COMPLETED{background:var(--tb-chip);color:var(--tb-text-secondary)}.badge.UPLOADING,.badge.PROCESSING,.badge.RESERVED,.badge.PLAYING{background:var(--tb-primary-tint);color:var(--tb-primary)}.badge.FAILED,.badge.DISABLED,.badge.SUSPENDED,.badge.REJECTED{background:var(--tb-danger-tint);color:var(--tb-danger)}.acts{display:flex;gap:7px;flex-wrap:wrap}.empty{padding:44px;text-align:center;color:var(--tb-text-meta);font-weight:600}.empty.compact{padding:16px}.role-pill{font-size:11px;font-weight:700;color:var(--tb-primary);background:var(--tb-primary-tint);padding:3px 10px;border-radius:var(--tb-r-pill)}.pending-row{background:var(--tb-danger-wash)}.pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}.pagination .count{color:var(--tb-text-meta);font-size:12px;font-weight:600}.pagination .pages{display:flex;gap:6px}.pagination .pages button{width:34px;height:34px;border-radius:11px;border:1.5px solid var(--tb-border);background:var(--tb-surface);color:var(--tb-text-secondary);font-weight:700;font-size:12.5px}.pagination .pages button.on{background:var(--tb-primary);border-color:var(--tb-primary);color:var(--tb-surface)}.filter-grid,.form-grid{display:grid;grid-template-columns:repeat(4,minmax(150px,1fr));gap:14px;margin-bottom:14px}.cell-note{display:block;margin-top:4px;color:var(--tb-text-meta);font-size:12px}.score-grid{display:grid;grid-template-columns:repeat(4,minmax(120px,1fr));gap:10px;margin:16px 0}.score-grid>div{padding:13px;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface-alt)}.score-grid span,.score-grid b{display:block}.score-grid span{color:var(--tb-text-meta);font-size:12px;margin-bottom:5px}.review-card{margin-top:14px;padding:16px;border-top:1px solid var(--tb-divider)}.student-essay{min-height:72px;margin:7px 0 12px;padding:13px;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface-alt);white-space:pre-wrap}.review-fields{display:grid;grid-template-columns:150px minmax(220px,1fr) auto;gap:12px;align-items:end}.form-grid.two{grid-template-columns:repeat(2,minmax(180px,1fr))}.phone-field{min-width:0}.phone-controls{display:flex;flex-wrap:wrap;gap:8px}.phone-controls>select,.phone-controls>input{flex:1 1 140px;width:0;min-width:min(140px,100%);max-width:100%}.phone-controls>input,.english-contact-input,#login-identifier{direction:ltr;text-align:left}.phone-controls [aria-invalid=true]{border-color:var(--tb-danger)}.phone-field .field-hint,.phone-field .field-error{overflow-wrap:anywhere}.catalog-shell{display:grid;grid-template-columns:250px minmax(0,1fr);gap:16px;align-items:start}.grade-rail{background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-card);box-shadow:var(--tb-shadow-card);padding:16px 15px;display:flex;flex-direction:column;gap:5px}.grade-rail-kicker{font-size:10px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--tb-text-meta);padding:2px 8px 8px}.grade-row{border:0;border-radius:14px;padding:11px 12px;text-align:left;background:transparent;display:grid;gap:3px;width:100%}.grade-row:hover{background:var(--tb-surface-alt)}.grade-row.on{background:var(--tb-primary-tint)}.grade-row b{font-size:12.5px;font-weight:700;color:var(--tb-ink)}.grade-row.on b{color:var(--tb-primary)}.grade-row span{font-size:11px;font-weight:600;color:var(--tb-text-meta)}.grade-row.on span{color:var(--tb-primary)}.catalog-main{display:flex;flex-direction:column;gap:9px;min-width:0}.catalog-main-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:2px}.catalog-main-head h2{margin:0;font-size:15px}.catalog-add{display:flex;align-items:center;gap:9px}.catalog-add input{margin:0;height:34px;width:200px;border-radius:var(--tb-r-pill);font-size:12.5px}.chapter-card{display:flex;align-items:center;gap:14px;background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);box-shadow:var(--tb-shadow-card);padding:14px 17px}.chapter-no{width:38px;height:38px;flex:0 0 auto;border-radius:var(--tb-r-icon-sm);display:grid;place-items:center;font-size:13px;font-weight:800;background:var(--tb-chip);color:var(--tb-text-secondary)}.chapter-no.mint{background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.chapter-no.warning{background:var(--tb-warning-tint);color:var(--tb-warning)}.chapter-no.primary{background:var(--tb-primary-tint);color:var(--tb-primary)}.chapter-copy{flex:1;min-width:0}.chapter-copy b{display:block;font-size:13.5px;color:var(--tb-ink)}.chapter-copy span{display:block;font-size:11.5px;font-weight:600;color:var(--tb-text-meta);margin-top:3px}.chapter-cover{width:150px;flex:0 0 auto}.chapter-cover .bar-track{height:6px}.chapter-cover small{display:block;font-size:10.5px;font-weight:600;color:var(--tb-text-meta);margin-top:5px}.bar-fill.mint{background:var(--tb-mint)}.bar-fill.warning{background:var(--tb-warning-solid)}.bar-fill.muted{background:var(--tb-border-strong)}.chapter-state{flex:0 0 auto;font-size:10.5px;font-weight:700;letter-spacing:.05em;padding:4px 10px;border-radius:var(--tb-r-pill);background:var(--tb-chip);color:var(--tb-text-secondary)}.chapter-state.mint{background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.chapter-state.warning{background:var(--tb-warning-tint);color:var(--tb-warning)}.catalog-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}.catalog-form{display:grid;grid-template-columns:1fr 110px auto;gap:12px;align-items:end;margin-bottom:14px}.catalog-form .btn{margin-bottom:14px;width:auto}.disabled-row{opacity:.6}.question-list{display:grid;gap:12px}.group-title{margin:12px 0 0;font-family:var(--tb-font-display);font-weight:700;color:var(--tb-ink);font-size:15px}.q-card{background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-card);box-shadow:var(--tb-shadow-card);padding:18px 20px}.q-card.selected{border-color:var(--tb-primary);box-shadow:var(--tb-focus-ring)}.q-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:12px}.q-badges{display:flex;gap:7px;flex-wrap:wrap}.q-badges span,.essay-pill{display:inline-block;background:var(--tb-chip);color:var(--tb-text-secondary);padding:4px 10px;border-radius:var(--tb-r-pill);font-size:10.5px;font-weight:800}.q-badges span.easy{background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.q-badges span.medium{background:var(--tb-warning-tint);color:var(--tb-warning)}.q-badges span.hard{background:var(--tb-danger-tint);color:var(--tb-danger)}.q-badges span.mcq{background:var(--tb-primary-tint);color:var(--tb-primary)}.q-badges span.essay{background:var(--tb-purple-tint);color:var(--tb-brand-secondary)}.q-text{font-size:15px;font-weight:600;line-height:1.55;color:var(--tb-ink);margin-bottom:12px}.q-text sub,.q-text sup,.rich-editor sub,.rich-editor sup,.option-list sub,.option-list sup{line-height:0}.chem-arrow{display:inline-grid;grid-template-rows:auto auto auto;align-items:center;justify-items:center;min-width:34px;margin:0 4px;vertical-align:middle;line-height:1}.chem-arrow-top,.chem-arrow-bottom{font-size:10px;font-weight:700;line-height:1;color:var(--tb-text-meta)}.chem-arrow-main{font-size:20px;line-height:.9;color:var(--tb-ink)}.math-frac{display:inline-grid;grid-template-rows:auto auto;vertical-align:middle;text-align:center;line-height:1.15;margin:0 3px}.math-num{padding:0 4px 2px;border-bottom:1px solid currentColor}.math-den{padding:2px 4px 0}.math-root{display:inline-flex;align-items:flex-start;font-size:1.12em}.math-root>span{border-top:1px solid currentColor;padding:0 3px}.math-symbol{display:inline-block;margin:0 3px;font-family:"Cambria Math","STIX Two Math",serif;font-size:1.08em}.q-image{display:block;max-width:320px;max-height:220px;object-fit:contain;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface);margin:8px 0 12px}.option-list{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:0;margin:10px 0 0}.option-list li{display:flex;align-items:center;gap:10px;padding:11px 13px;border:1.5px solid var(--tb-border);border-radius:14px;color:var(--tb-text-secondary);font-weight:600}.option-list li.correct{border-color:var(--tb-mint);background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.option-list li b{order:3;margin-left:auto;font-size:11px;background:transparent;color:var(--tb-mint-deep);border-radius:var(--tb-r-pill);padding:0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:color-mix(in srgb,var(--tb-ink) 55%,transparent);display:flex;align-items:center;justify-content:center;padding:24px;z-index:40}.modal{width:min(920px,100%);max-height:92vh;overflow:auto;background:var(--tb-surface);border-radius:var(--tb-r-modal);box-shadow:var(--tb-shadow-modal);padding:24px}.modal.wide{width:min(1120px,100%)}.modal-head{display:flex;align-items:center;gap:13px;margin-bottom:18px}.modal-head h2{margin:0;font-size:18px}.modal-head .modal-sub{margin:3px 0 0;font-size:12.5px;color:var(--tb-text-meta);font-weight:600}.modal-head-copy{flex:1;min-width:0}.modal-icon{width:42px;height:42px;flex:0 0 auto;border-radius:var(--tb-r-icon);background:var(--tb-primary-tint);color:var(--tb-primary);display:grid;place-items:center}.modal-section{margin-bottom:18px}.modal-section>.kicker{display:block;font-size:10px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--tb-primary);margin-bottom:11px}.icon-btn{width:36px;height:36px;border:1.5px solid var(--tb-border);border-radius:12px;background:var(--tb-surface);color:var(--tb-text-secondary);display:grid;place-items:center;flex:0 0 auto}.icon-btn:hover{background:var(--tb-bg)}.editor-wrap{margin-bottom:14px;min-width:0}.editor-wrap.compact{margin-bottom:0}.editor-toolbar{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 7px}.editor-toolbar.hidden{display:none}.editor-wrap.compact{position:relative}.editor-wrap.compact .editor-toolbar{position:absolute;bottom:calc(100% + 6px);left:0;z-index:5;margin:0;padding:7px;max-width:100%;background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-field);box-shadow:var(--tb-shadow-raised)}.editor-toolbar button{height:30px;border:1.5px solid var(--tb-border);border-radius:9px;background:var(--tb-surface);color:var(--tb-ink);padding:0 9px;font-size:12px;font-weight:700}.editor-toolbar button:hover{background:var(--tb-bg);border-color:var(--tb-border-input)}.rich-editor{min-height:92px;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface);padding:12px 14px;outline:none;line-height:1.6}.compact .rich-editor{min-height:44px;padding:11px 13px}.rich-editor:focus{border-color:var(--tb-primary);box-shadow:var(--tb-focus-ring)}.rich-editor:empty:before{content:attr(data-placeholder);color:var(--tb-text-disabled);font-weight:500;pointer-events:none}.answer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.answer-head span{font-size:12px;font-weight:600;color:var(--tb-text-meta)}.answer-rows{display:flex;flex-direction:column;gap:8px}.answer-row{display:grid;grid-template-columns:34px minmax(0,1fr) 32px;align-items:start;gap:10px;padding:8px;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface)}.answer-row.correct{border-color:var(--tb-mint);background:var(--tb-mint-tint)}.answer-row.correct .rich-editor{background:var(--tb-surface)}.answer-letter{width:34px;height:34px;margin-top:4px;flex:0 0 auto;border:1.5px solid var(--tb-border-input);border-radius:11px;background:var(--tb-surface);color:var(--tb-text-secondary);font-size:13px;font-weight:800;display:grid;place-items:center}.answer-letter:hover{border-color:var(--tb-mint);color:var(--tb-mint-deep)}.answer-row.correct .answer-letter{background:var(--tb-mint);border-color:var(--tb-mint);color:var(--tb-mint-on-fill)}.icon-btn.subtle{width:32px;height:32px;margin-top:5px;border-color:transparent;background:transparent;color:var(--tb-text-disabled)}.icon-btn.subtle:hover:not(:disabled){background:var(--tb-danger-tint);color:var(--tb-danger)}.icon-btn.subtle:disabled{opacity:.35}.question-import-setup{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:12px}.question-bank-filters{grid-template-columns:repeat(5,minmax(135px,1fr))}.question-import-mode{margin:5px 0 0}.question-import-mode button:disabled{cursor:default;opacity:.62}.field-hint{margin:7px 0 0;color:var(--tb-text-meta);font-size:11px;font-weight:600}.question-import-picker{width:100%;min-height:104px;border:1.5px dashed var(--tb-border-input);border-radius:var(--tb-r-field);background:var(--tb-bg);color:var(--tb-primary);display:grid;place-items:center;align-content:center;gap:4px}.question-import-picker:hover:not(:disabled){border-color:var(--tb-primary);background:var(--tb-primary-tint)}.question-import-picker b{font-size:13px;color:var(--tb-ink)}.question-import-picker span{font-size:11px;font-weight:600;color:var(--tb-text-meta)}.question-import-picker:disabled{opacity:.55;cursor:default}.question-import-sources{display:grid;gap:8px;margin-top:10px}.question-import-source{display:grid;grid-template-columns:52px minmax(0,1fr) auto 32px;align-items:center;gap:11px;padding:9px 10px;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface)}.question-import-source.error{border-color:var(--tb-danger);background:var(--tb-danger-tint)}.question-import-source img{width:52px;height:42px;object-fit:cover;border-radius:7px;border:1px solid var(--tb-border)}.question-import-source-file{width:52px;height:42px;display:grid;place-items:center;align-content:center;gap:1px;border:1px solid var(--tb-border);border-radius:7px;background:var(--tb-primary-tint);color:var(--tb-primary)}.question-import-source .question-import-source-file span{margin-top:0;color:var(--tb-primary);font-size:8px;font-weight:900;letter-spacing:0}.question-import-source>div{min-width:0}.question-import-source b,.question-import-source span,.question-import-source small{display:block}.question-import-source b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12.5px}.question-import-source>div>span,.question-import-source small{margin-top:2px;color:var(--tb-text-meta);font-size:10.5px;font-weight:600}.question-import-source small.danger-text{color:var(--tb-danger)}.question-import-source .badge{display:inline-block;margin:0}.question-import-source .badge.EXTRACTING{background:var(--tb-warning-tint);color:var(--tb-warning)}.question-import-source .badge.DONE{background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.question-import-source .badge.PARTIAL{background:var(--tb-warning-tint);color:var(--tb-warning)}.question-import-source .badge.ERROR{background:var(--tb-danger-tint);color:var(--tb-danger)}.question-import-progress{min-height:74px;margin-top:10px;padding:12px 14px;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-primary-tint)}.question-import-progress-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.question-import-progress-head b{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--tb-ink);font-size:11.5px}.question-import-progress-head span{flex:0 0 auto;color:var(--tb-primary);font-size:10.5px;font-weight:800}.question-import-progress-track{position:relative;height:7px;margin-top:9px;overflow:hidden;border-radius:var(--tb-r-pill);background:var(--tb-track)}.question-import-progress-track span{position:absolute;inset-block:0;width:38%;border-radius:inherit;background:linear-gradient(90deg,var(--tb-primary),var(--tb-mint));animation:question-import-progress 1.25s ease-in-out infinite}.question-import-progress small{display:block;margin-top:7px;color:var(--tb-text-meta);font-size:10px;font-weight:600}@keyframes question-import-progress{0%{transform:translate(-110%)}to{transform:translate(275%)}}@media(prefers-reduced-motion:reduce){.question-import-progress-track span{width:100%;animation:none;opacity:.72}}.question-import-extract-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px}.question-import-extract-row>span{color:var(--tb-text-meta);font-size:11px;font-weight:700}.question-import-drafts{display:grid;gap:14px}.question-import-draft{padding:16px;border:1px solid var(--tb-border);border-radius:var(--tb-r-card);background:var(--tb-bg)}.question-import-draft-head{display:grid;grid-template-columns:36px minmax(0,1fr) 32px;align-items:center;gap:9px;margin-bottom:13px}.question-import-draft-head>.question-number{width:36px;height:36px;display:grid;place-items:center;box-sizing:border-box;border-radius:9px;background:var(--tb-primary);color:var(--tb-surface);font-size:12px;line-height:1;font-weight:800;font-variant-numeric:tabular-nums}.question-import-draft-head b,.question-import-draft-head span{display:block}.question-import-draft-head b{font-size:13px}.question-import-draft-head div>span{margin-top:2px;color:var(--tb-text-meta);font-size:10.5px;font-weight:600}.question-import-classification{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:13px}.question-import-classification.type-only{grid-template-columns:minmax(180px,280px)}.question-import-review-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:14px;align-items:start}.question-import-preview{width:220px;max-height:250px;object-fit:contain;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface)}.question-import-preview.extracted-visual{max-height:300px}.question-import-pdf-preview{min-height:124px;display:grid;place-items:center;align-content:center;gap:5px;padding:10px;color:var(--tb-primary);text-align:center}.question-import-pdf-preview b{font-size:11px;color:var(--tb-ink)}.question-import-pdf-preview span{width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--tb-text-meta);font-size:9.5px;font-weight:600}.question-import-attach{margin:-5px 0 12px;font-size:11.5px;color:var(--tb-text-secondary)}.question-import-answers{margin-top:4px}.import-add-answer{align-self:flex-start;margin-top:2px}@media(max-width:720px){.question-import-setup,.question-import-classification,.question-import-review-grid{grid-template-columns:1fr}.question-import-preview{width:100%;max-height:190px}.question-import-source{grid-template-columns:44px minmax(0,1fr) 32px}.question-import-source img,.question-import-source-file{width:44px;height:40px}.question-import-source .badge{grid-column:2}}@media(max-width:1180px)and (min-width:721px){.question-bank-filters{grid-template-columns:repeat(3,minmax(150px,1fr))}}.image-picker{margin-bottom:4px}.image-add{display:flex;align-items:center;gap:9px;width:100%;padding:13px 15px;border:1.5px dashed var(--tb-border-input);border-radius:var(--tb-r-field);background:var(--tb-surface-alt);color:var(--tb-text-secondary);font-size:13px;font-weight:700;font-family:inherit}.image-add:hover{border-color:var(--tb-primary);color:var(--tb-primary);background:var(--tb-primary-tint)}.image-add span{font-weight:500;color:var(--tb-text-meta);font-size:12px}.image-add:hover span{color:var(--tb-primary)}.image-chosen{display:flex;align-items:center;gap:10px}.image-chosen img{height:64px;max-width:160px;object-fit:contain;border:1px solid var(--tb-border);border-radius:12px;background:var(--tb-surface)}.image-row{display:grid;grid-template-columns:minmax(240px,1fr) 200px;gap:14px;align-items:end;margin-bottom:14px}.image-preview{height:86px;border:1.5px dashed var(--tb-border-strong);border-radius:var(--tb-r-field);color:var(--tb-text-meta);display:flex;align-items:center;justify-content:center;background:var(--tb-surface-alt);font-size:12.5px}.image-preview img{max-width:100%;max-height:82px;object-fit:contain}.options-box{border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);padding:16px;background:var(--tb-surface-alt);margin-bottom:14px}.section-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-row h3{margin:0;font-size:14px}.option-row{display:grid;grid-template-columns:86px 1fr 34px;gap:10px;align-items:start;margin-bottom:10px}.correct-pick{margin:39px 0 0;color:var(--tb-text-meta);font-size:12px}.live-session-toolbar{align-items:flex-start;margin-bottom:18px}.live-session-toolbar h2{margin-bottom:0}.live-session-list{display:grid;gap:10px}.live-session-row{display:grid;grid-template-columns:46px minmax(0,1fr) auto;gap:14px;align-items:center;padding:15px;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);background:var(--tb-surface-alt)}.live-session-row.live{border-color:var(--tb-pink);background:var(--tb-pink-tint)}.live-session-row.cancelled{opacity:.72}.live-session-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:var(--tb-r-icon);color:var(--tb-primary);background:var(--tb-primary-tint)}.live-session-row.live .live-session-icon{color:var(--tb-pink-text);background:var(--tb-surface)}.live-session-copy{min-width:0}.live-session-title-line{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.live-session-title-line h3{margin:0;font-size:14px;letter-spacing:0}.live-session-copy>p{margin:5px 0 0;color:var(--tb-text-secondary);font-size:12px;line-height:1.45}.live-session-meta{display:flex;flex-wrap:wrap;gap:7px 16px;margin-top:8px;color:var(--tb-text-meta);font-size:11px;font-weight:700}.live-session-meta span+span{position:relative}.live-session-meta span+span:before{content:"";position:absolute;width:3px;height:3px;border-radius:50%;background:var(--tb-text-disabled);left:-9px;top:6px}.live-status{display:inline-flex;align-items:center;min-height:23px;padding:3px 9px;border-radius:var(--tb-r-pill);color:var(--tb-text-secondary);background:var(--tb-chip);font-size:9.5px;font-weight:800;text-transform:uppercase;letter-spacing:.05em}.live-status.live{color:var(--tb-pink-text);background:var(--tb-pink-tint)}.live-status.scheduled{color:var(--tb-primary);background:var(--tb-primary-tint)}.live-status.cancelled{color:var(--tb-danger);background:var(--tb-danger-tint)}.live-session-actions{display:flex;justify-content:flex-end;gap:7px;flex-wrap:wrap}.live-studio-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:14px;align-items:stretch}.live-broadcast-stage{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:var(--tb-r-tile);background:var(--tb-ink-deep)}.live-broadcast-stage video{display:block;width:100%;height:100%;object-fit:contain;background:var(--tb-ink-deep)}.live-broadcast-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:var(--tb-on-dark-secondary);font-size:13px;font-weight:700}.live-broadcast-label{position:absolute;top:14px;left:14px;display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:var(--tb-r-pill);background:var(--tb-pink);color:var(--tb-ink);font-size:10px;font-weight:900;letter-spacing:.08em}.live-broadcast-label span{width:6px;height:6px;border-radius:50%;background:var(--tb-on-dark)}.live-hand-panel{min-height:0;overflow:hidden;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);background:var(--tb-surface-alt)}.live-hand-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:15px;border-bottom:1px solid var(--tb-divider);background:var(--tb-surface)}.live-hand-head h3{margin:0;font-size:13px;letter-spacing:0}.live-hand-head p{margin:4px 0 0;color:var(--tb-text-meta);font-size:10.5px;font-weight:600}.live-hand-count{display:inline-flex;align-items:center;gap:5px;min-width:36px;min-height:28px;padding:4px 8px;border-radius:var(--tb-r-pill);color:var(--tb-primary);background:var(--tb-primary-tint);font-size:11px;font-weight:800}.live-hand-list{max-height:min(47vw,450px);overflow-y:auto}.live-hand-row{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:9px;align-items:center;padding:11px 12px;border-bottom:1px solid var(--tb-divider)}.live-hand-row:last-child{border-bottom:0}.live-hand-row.speaking{background:var(--tb-mint-tint)}.live-hand-avatar{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;color:var(--tb-primary);background:var(--tb-primary-tint);font-size:12px;font-weight:900}.live-hand-row.speaking .live-hand-avatar{color:var(--tb-mint-deep);background:var(--tb-surface)}.live-hand-copy{min-width:0;display:grid;gap:3px}.live-hand-copy b,.live-hand-copy span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.live-hand-copy b{font-size:11.5px}.live-hand-copy span{color:var(--tb-text-meta);font-size:9.5px;font-weight:650}.live-hand-row .btn{padding:7px 9px;white-space:nowrap}.live-hand-empty{min-height:150px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:20px;color:var(--tb-text-meta);text-align:center;font-size:11px;font-weight:650}.live-hand-empty.error{color:var(--tb-danger)}.live-remote-audio{position:absolute;width:0;height:0;overflow:hidden}.live-broadcast-controls{display:flex;align-items:center;gap:9px;margin-top:13px}.live-broadcast-spacer{flex:1}.studio-control{width:42px;height:42px;display:grid;place-items:center;border:1.5px solid var(--tb-border-strong);border-radius:50%;color:var(--tb-text-secondary);background:var(--tb-surface)}.studio-control:hover{background:var(--tb-bg)}.studio-control.on{color:var(--tb-primary);border-color:var(--tb-primary);background:var(--tb-primary-tint)}.modal-actions{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin:18px -24px -24px;padding:16px 24px;background:var(--tb-surface-alt);border-top:1px solid var(--tb-divider);border-radius:0 0 var(--tb-r-modal) var(--tb-r-modal)}.modal-actions .btn{width:auto}.modal-actions .note{margin-right:auto;font-size:12px;color:var(--tb-text-meta);font-weight:600}.switch{display:inline-flex;align-items:center;margin:0}.switch input{display:none}.switch span{width:42px;height:24px;border-radius:var(--tb-r-pill);background:var(--tb-border-input);position:relative;transition:.2s}.switch span:before{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:var(--tb-surface);transition:.2s;box-shadow:0 1px 3px color-mix(in srgb,var(--tb-ink) 18%,transparent)}.switch input:checked+span{background:var(--tb-primary)}.switch input:checked+span:before{left:21px}.switch input:disabled+span{opacity:.55;cursor:not-allowed}.pick-progress{display:flex;align-items:center;gap:12px;margin-bottom:14px}.pick-progress .bar-track{flex:1}.pick-progress span{flex:0 0 auto;font-size:12.5px;font-weight:800}.pick-progress span.ok{color:var(--tb-mint-text);margin:0}.pick-progress span.warn{color:var(--tb-warning);margin:0}.selection-count{font-weight:800;color:var(--tb-primary);margin-bottom:12px}.manual-question-results{min-height:72px;margin:2px 0 10px}.manual-question-results .form-error{margin-top:0}.warn{color:var(--tb-warning);font-weight:800;margin-top:10px}.ok{color:var(--tb-mint-text);font-weight:800;margin-top:10px}.check{display:flex;align-items:center;gap:8px;margin-bottom:14px;color:var(--tb-ink);font-size:14px;font-weight:600}.check input,.pill-check input,.student-pick input{width:auto;height:auto;margin:0}.pill-grid{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.pill-check{display:flex;align-items:center;gap:7px;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-pill);padding:8px 13px;background:var(--tb-surface);color:var(--tb-ink);font-size:13px;font-weight:600}.scope-summary{display:grid;gap:5px;color:var(--tb-text-meta);font-size:12px}.scope-summary span{display:block}.scope-summary b{color:var(--tb-ink);margin-right:5px}.scope-editors{display:grid;gap:10px;margin-bottom:18px}.scope-editor{display:grid;grid-template-columns:minmax(0,1fr) max-content;gap:18px;align-items:end;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);padding:16px;background:var(--tb-surface-alt)}.scope-fields{display:grid;grid-template-columns:minmax(210px,.7fr) minmax(360px,1.3fr);gap:18px;align-items:start}.scope-fields input{margin-bottom:0}.scope-fields .pill-grid{margin:0;min-height:46px;align-items:flex-start}.scope-editor-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;min-height:46px}.scope-editor-actions .btn{white-space:nowrap}.scope-grade-field{min-width:0}.scope-grade-head{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:18px;margin-bottom:7px}.scope-grade-head label{margin:0}.modal-head-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}.modal-head-action{height:36px}.grade-create-panel{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(360px,1.2fr);gap:18px;align-items:center;padding:14px 20px;margin:-2px 0 18px;border-top:1px solid var(--tb-divider);border-bottom:1px solid var(--tb-divider);background:var(--tb-surface-alt)}.grade-create-copy{display:grid;gap:3px}.grade-create-copy b{color:var(--tb-ink);font-size:13px}.grade-create-copy span{color:var(--tb-text-meta);font-size:11.5px;font-weight:600}.grade-create-control{display:grid;grid-template-columns:minmax(180px,1fr) auto 34px;gap:8px;align-items:center}.grade-create-control input{height:38px;margin:0}.grade-create-control .icon-btn{width:34px;height:34px}.grade-create-panel .field-error{grid-column:2}.field-error{display:block;margin-top:6px;color:var(--tb-danger);font-size:11.5px;font-weight:700}.scope-add{border-top:1px solid var(--tb-divider);padding-top:18px;margin-top:8px}.scope-add h2{margin:0 0 14px;font-size:15px}.scope-editor-new{background:var(--tb-surface)}.target-list{display:grid;gap:8px;max-height:260px;overflow:auto;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);padding:8px;background:var(--tb-surface-alt)}.student-pick{display:flex;align-items:center;gap:10px;margin:0;padding:9px;border-radius:12px;color:var(--tb-ink)}.student-pick:hover{background:var(--tb-primary-tint)}.student-pick span{display:grid;gap:2px}.student-pick small{color:var(--tb-text-meta)}.toast{position:fixed;bottom:22px;left:50%;transform:translate(-50%);background:var(--tb-primary);color:var(--tb-surface);padding:12px 22px;border-radius:var(--tb-r-pill);font-size:13.5px;font-weight:600;box-shadow:var(--tb-shadow-raised);opacity:0;transition:.25s;pointer-events:none}.toast.show{opacity:1}.briefing{position:relative;overflow:hidden;background:var(--tb-grad-briefing);border-radius:var(--tb-r-card);padding:26px 28px;margin-bottom:15px;display:flex;align-items:center;gap:26px;flex-wrap:wrap}.briefing .blob{position:absolute;border-radius:50%;pointer-events:none}.briefing .blob.one{left:44%;top:-60px;width:300px;height:300px;background:color-mix(in srgb,var(--tb-surface) 6%,transparent)}.briefing-copy{position:relative;flex:1;min-width:260px}.briefing-copy .kicker{font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--tb-on-dark-kicker)}.briefing-copy h1{font-size:32px;line-height:1.1;letter-spacing:-.03em;color:var(--tb-surface);margin:11px 0 0}.briefing-copy p{margin:9px 0 0;font-size:13.5px;font-weight:500;color:var(--tb-on-dark-secondary)}.briefing-cards{position:relative;display:flex;gap:12px;flex-wrap:wrap}.briefing-card{width:148px;flex:none;text-align:left;border:0;border-radius:var(--tb-r-tile);padding:15px 17px;background:var(--tb-primary-dark);color:var(--tb-surface)}.briefing-card:hover{background:var(--tb-primary)}.briefing-card.mint{background:var(--tb-mint);color:var(--tb-mint-on-fill)}.briefing-card.mint:hover{background:var(--tb-mint-pressed)}.briefing-card .row{display:flex;align-items:flex-start;justify-content:space-between}.briefing-card .fig{font-size:30px;line-height:1;font-weight:800;margin-top:14px}.briefing-card .lab{font-size:12px;font-weight:700;margin-top:7px;color:var(--tb-on-dark-secondary)}.briefing-card.mint .lab{color:var(--tb-mint-on-fill)}.queue-rows{display:flex;flex-direction:column}.queue-row{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--tb-divider)}.queue-row:first-child{padding-top:4px}.queue-row:last-child{border-bottom:none;padding-bottom:4px}.icon-square{width:42px;height:42px;flex:0 0 auto;border-radius:var(--tb-r-icon);display:grid;place-items:center}.topic-row{margin-bottom:13px}.topic-row:last-of-type{margin-bottom:0}.topic-row .head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:7px}.topic-row .head b{font-size:13.5px;font-weight:700;color:var(--tb-ink)}.topic-row .head span{font-size:13px;font-weight:700;color:var(--tb-text-meta);flex:0 0 auto}.topic-row .bar-track{width:100%}.topic-row .bar-fill.violet{background:var(--tb-brand-secondary)}.topic-row .bar-fill.muted{background:var(--tb-text-disabled)}.icon-square.primary{background:var(--tb-primary-tint);color:var(--tb-primary)}.icon-square.mint{background:var(--tb-mint-tint);color:var(--tb-mint-deep)}.icon-square.warning{background:var(--tb-warning-tint);color:var(--tb-warning)}.icon-square.danger{background:var(--tb-danger-tint);color:var(--tb-danger)}.icon-square.sky{background:var(--tb-sky-tint);color:var(--tb-sky-text)}.queue-detail .bar-fill{background:var(--tb-mint)}.queue-copy{flex:1;min-width:0}.queue-copy b{display:block;font-size:13.5px;color:var(--tb-ink)}.queue-copy span{display:block;font-size:12px;color:var(--tb-text-meta);font-weight:600;margin-top:2px}.queue-detail{flex:0 0 auto;min-width:150px;color:var(--tb-text-meta);font-size:12px;font-weight:600}.queue-actions{display:flex;gap:8px;flex:0 0 auto}.dash-columns{display:grid;grid-template-columns:1.35fr 1fr;gap:18px;align-items:start}.chart-cols{display:flex;align-items:flex-end;gap:12px;height:180px;padding-top:26px}.chart-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;border:0;background:transparent;padding:0;font-family:inherit;border-radius:12px}.chart-col:hover .fill{filter:brightness(.96)}.chart-col:hover .day{color:var(--tb-text-secondary)}.chart-col .track{flex:1;width:100%;display:flex;align-items:flex-end}.chart-col .fill{width:100%;border-radius:10px 10px 4px 4px;background:var(--tb-track);position:relative}.chart-col.today .fill{background:var(--tb-grad-brand)}.chart-col .tag{position:absolute;bottom:100%;left:50%;transform:translate(-50%);margin-bottom:7px;background:var(--tb-primary);color:var(--tb-surface);border-radius:var(--tb-r-pill);padding:3px 9px;font-size:10.5px;font-weight:800;white-space:nowrap}.chart-col .day{font-size:11px;font-weight:700;color:var(--tb-text-meta)}.insight-row{display:flex;align-items:center;gap:11px;margin-top:14px;padding:13px 15px;border-radius:var(--tb-r-field);background:var(--tb-primary-tint);color:var(--tb-primary);font-size:12.5px;font-weight:700;line-height:1.45}.insight-row svg{flex:0 0 auto}.lesson-cards{display:grid;gap:12px}.lesson-card{display:flex;align-items:center;gap:16px;flex-wrap:wrap;background:var(--tb-surface);border:1px solid var(--tb-border);border-radius:var(--tb-r-card);box-shadow:var(--tb-shadow-card);padding:16px 18px}.lesson-card.ready{border:1.5px solid var(--tb-warning-solid)}.lesson-thumb{width:96px;height:56px;flex:0 0 auto;border-radius:12px;background:var(--tb-grad-brand);color:var(--tb-surface);display:grid;place-items:center;position:relative;overflow:hidden}.lesson-thumb.grey{background:var(--tb-chip);color:var(--tb-text-disabled)}.lesson-thumb .dur{position:absolute;right:5px;bottom:5px;background:color-mix(in srgb,var(--tb-ink) 55%,transparent);color:var(--tb-on-dark);border-radius:6px;padding:1px 5px;font-size:9.5px;font-weight:800}.lesson-main{flex:1;min-width:200px}.lesson-main b{display:block;font-size:14px;color:var(--tb-ink)}.lesson-main span{display:block;font-size:12px;color:var(--tb-text-meta);font-weight:600;margin-top:3px}.lesson-meta{flex:0 0 auto;min-width:150px;max-width:260px;font-size:12px;font-weight:600;color:var(--tb-text-meta)}.lesson-metrics{grid-template-columns:repeat(4,minmax(140px,1fr))}.lesson-card .badge{flex:0 0 auto}.lesson-card .acts{flex:0 0 auto;justify-content:flex-end}.segmented{display:inline-flex;gap:4px;padding:4px;border-radius:var(--tb-r-pill);background:var(--tb-track);margin-bottom:18px}.segmented button{display:inline-flex;align-items:center;gap:7px;border:0;background:transparent;border-radius:var(--tb-r-pill);padding:8px 16px;font-size:12.5px;font-weight:700;color:var(--tb-text-secondary)}.segmented button.on{background:var(--tb-surface);color:var(--tb-ink);box-shadow:var(--tb-shadow-card)}.workspace-stack{display:grid;gap:2px}.platform-metrics{grid-template-columns:repeat(6,minmax(135px,1fr))}.platform-metrics .metric{min-width:0}.platform-metrics .metric .v{font-size:24px;overflow-wrap:anywhere}.platform-video-filters{grid-template-columns:minmax(240px,1.2fr) minmax(170px,.6fr) minmax(220px,1fr)}.platform-shell .header-row>svg{width:22px;height:22px;color:var(--tb-primary);flex:0 0 auto}.platform-rows{display:flex;flex-direction:column}.platform-row{display:flex;align-items:center;gap:14px;padding:12px 0;border-bottom:1px solid var(--tb-divider)}.platform-row:last-child{border-bottom:none;padding-bottom:0}.platform-row:first-child{padding-top:0}.platform-row .lesson-thumb{width:56px;height:36px;border-radius:10px}.platform-stat{flex:0 0 auto;width:170px;font-size:12px;font-weight:600;color:var(--tb-text-secondary)}.platform-stat.narrow{width:96px}.platform-filter-bar{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}.platform-filter-bar select{margin:0;width:auto;min-width:170px;height:40px;border-radius:var(--tb-r-field)}.search-pill{flex:1;min-width:220px;display:flex;align-items:center;gap:9px;height:40px;padding:0 14px;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface)}.search-pill svg{flex:0 0 auto;color:var(--tb-text-disabled)}.search-pill input{margin:0;height:auto;border:0;padding:0;background:transparent;font-size:12.5px}.search-pill input:focus{box-shadow:none}.search-pill:focus-within{border-color:var(--tb-primary);box-shadow:var(--tb-focus-ring)}.teacher-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}.teacher-card{border:1px solid var(--tb-border);border-radius:var(--tb-r-card-sm);background:var(--tb-surface);padding:17px 18px;display:flex;flex-direction:column;gap:13px}.teacher-card.suspended{background:var(--tb-surface-alt)}.teacher-card header{display:flex;align-items:center;gap:11px}.teacher-card header .avatar{width:42px;height:42px;font-size:15px}.teacher-id{flex:1;min-width:0}.teacher-id b{display:block;font-size:13.5px;color:var(--tb-ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.teacher-id span{display:block;font-size:11px;font-weight:600;color:var(--tb-text-meta);margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.teacher-scopes{display:flex;flex-direction:column;gap:6px}.teacher-scope{background:var(--tb-surface-alt);border-radius:12px;padding:9px 11px}.teacher-scope b{display:block;font-size:12.5px;color:var(--tb-ink)}.teacher-scope span{display:block;font-size:11px;font-weight:600;color:var(--tb-text-meta);margin-top:2px}.teacher-scope.empty{text-align:center}.teacher-card footer{margin-top:auto}.platform-teacher-picker{display:grid;grid-template-columns:minmax(240px,1fr) minmax(210px,.7fr) minmax(210px,.7fr);align-items:end;gap:16px;padding:18px 20px;border:1px solid var(--tb-border);border-radius:8px;background:var(--tb-surface);box-shadow:var(--tb-shadow-card)}.platform-teacher-identity{display:flex;align-items:center;gap:12px;min-width:0}.platform-teacher-logo{width:48px;height:48px;flex:0 0 auto;display:grid;place-items:center;border:1px solid var(--tb-border);border-radius:8px;background:var(--tb-surface-alt);overflow:hidden}.platform-teacher-logo img{width:100%;height:100%;object-fit:contain}.platform-teacher-logo img.platform-logo{background:var(--tb-board)}.platform-teacher-identity span{display:block;color:var(--tb-text-meta);font-size:10.5px;font-weight:800;text-transform:uppercase;letter-spacing:0}.platform-teacher-identity h2{margin:3px 0 0;color:var(--tb-ink);font-size:18px;overflow-wrap:anywhere}.platform-management-tabs{margin:2px 0 0}.platform-management-tabs button{display:inline-flex;align-items:center;gap:7px}.platform-management-tabs svg{width:16px;height:16px}.platform-management-panel{min-width:0}.platform-scope-list{display:grid;gap:8px}.platform-scope-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:12px 14px;border:1px solid var(--tb-border);border-radius:8px;background:var(--tb-surface-alt)}.platform-scope-row b,.platform-scope-row span{display:block}.platform-scope-row>div>span{margin-top:4px;color:var(--tb-text-meta);font-size:11.5px;font-weight:600}.platform-feature-row{align-items:flex-start}.platform-feature-controls{display:grid;gap:9px;flex:0 0 auto}.platform-feature-controls>label{display:flex;align-items:center;justify-content:flex-end;gap:9px;margin:0;color:var(--tb-text-meta);font-size:10.5px;font-weight:700}.platform-shell td code{display:inline-block;padding:4px 8px;border:1px solid var(--tb-border);border-radius:8px;background:var(--tb-surface-alt);color:var(--tb-ink);font-size:12px}.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(260px,1fr));gap:10px}.feature-row{min-height:72px;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);padding:14px 15px;display:flex;align-items:center;justify-content:space-between;gap:14px;background:var(--tb-surface)}.feature-row b{display:block;font-size:13.5px;color:var(--tb-ink)}.feature-row small{display:block;color:var(--tb-text-meta);font-size:11.5px;margin-top:4px;line-height:1.4}.feature-row.muted-feature{background:var(--tb-surface-alt)}.feature-row.muted-feature b{color:var(--tb-text-secondary)}.feature-control{display:flex;align-items:center;gap:9px;color:var(--tb-text-meta)}.upload-row{display:grid;grid-template-columns:220px minmax(260px,1fr) auto;align-items:end;gap:14px;margin-bottom:16px}.upload-row .btn{margin-bottom:14px}.markdown-file-field{min-width:0;margin-bottom:14px;position:relative}.markdown-file-field>label{margin-bottom:7px}.markdown-file-picker{width:100%;height:46px;padding:0 10px;border:1.5px solid var(--tb-border-input);border-radius:var(--tb-r-field);background:var(--tb-surface);color:var(--tb-ink);display:flex;align-items:center;gap:10px;text-align:left;box-shadow:none;transition:border-color .15s,background .15s,box-shadow .15s}.markdown-file-picker:hover{border-color:var(--tb-primary);background:var(--tb-surface-alt)}.markdown-file-picker:focus-visible{outline:none;border-color:var(--tb-primary);box-shadow:var(--tb-focus-ring)}.markdown-file-picker.selected{border-color:var(--tb-primary);background:var(--tb-primary-tint)}.markdown-file-picker.invalid{border-color:var(--tb-danger);background:var(--tb-danger-wash)}.markdown-file-icon{width:30px;height:30px;border-radius:10px;flex:0 0 auto;display:grid;place-items:center;background:var(--tb-primary-tint);color:var(--tb-primary)}.markdown-file-picker.selected .markdown-file-icon{background:var(--tb-surface)}.markdown-file-copy{min-width:0;flex:1;display:grid;gap:1px}.markdown-file-copy b,.markdown-file-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.markdown-file-copy b{font-size:12.5px}.markdown-file-copy small{color:var(--tb-text-meta);font-size:10.5px;font-weight:600}.markdown-file-action{flex:0 0 auto;display:inline-flex;align-items:center;gap:5px;color:var(--tb-primary);font-size:11.5px;font-weight:800}.markdown-file-action svg{width:15px;height:15px}.markdown-file-field .field-error{position:absolute;top:calc(100% + 5px);left:0;margin:0}.feature-notice{display:flex;align-items:center;gap:12px;border-radius:var(--tb-r-tile);background:var(--tb-primary-tint);padding:16px 18px;color:var(--tb-primary)}.feature-notice svg{width:22px;flex:0 0 auto}.feature-notice b{display:block}.feature-notice p{margin:4px 0 0;color:var(--tb-primary);opacity:.8;font-size:12px;line-height:1.5}.audit-panel{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.audit-copy{flex:1;min-width:220px}.audit-copy b{display:block;font-size:14px;color:var(--tb-ink)}.audit-copy span{display:block;font-size:12px;font-weight:600;color:var(--tb-text-meta);margin-top:3px}.audit-panel select{margin:0;width:auto;min-width:170px;height:38px}.report-layout{display:grid;grid-template-columns:minmax(420px,.85fr) minmax(560px,1.15fr);gap:18px;align-items:start}.report-layout .panel{min-width:0}.clickable-row:hover{background:var(--tb-surface-alt)}.report-metrics{grid-template-columns:repeat(5,minmax(130px,1fr))}.report-metrics .metric .v{font-size:22px}.exception-row{background:var(--tb-warning-tint)}.overdue-row{background:var(--tb-danger-wash)}.exception-note{display:block;color:var(--tb-warning);font-weight:700;margin-top:5px;max-width:230px}.fee-headline{grid-template-columns:repeat(3,minmax(180px,1fr))}.fee-headline .metric .v{font-size:24px}.fee-prerequisite{display:flex;align-items:center;gap:9px;margin:0 0 14px;padding:10px 12px;border-radius:var(--tb-r-field);background:var(--tb-warning-tint);color:var(--tb-warning);font-size:12px;font-weight:700}.fee-prerequisite svg{flex:0 0 auto}.balance-rows{display:flex;flex-direction:column}.balance-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:13px 0;border-bottom:1px solid var(--tb-divider)}.balance-row:last-child{border-bottom:none}.balance-row.owing{background:var(--tb-danger-wash);border-radius:var(--tb-r-field);padding:13px 14px;margin-bottom:2px}.balance-exceptions{flex:0 0 auto;display:flex;flex-wrap:wrap;gap:4px;max-width:220px}.balance-figure{flex:0 0 auto;min-width:130px;text-align:right}.balance-figure b{display:block;font-size:14px}.balance-figure span{display:block;font-size:11px;font-weight:600;color:var(--tb-text-meta);margin-top:2px}.fee-metrics{grid-template-columns:repeat(6,minmax(125px,1fr))}.fee-tabs{margin:2px 0 16px}.fee-scope-bar{display:grid;grid-template-columns:minmax(220px,1fr) minmax(150px,220px) minmax(150px,220px) auto;gap:12px;align-items:end;margin:0 0 16px;padding:12px 14px;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);background:var(--tb-surface)}.fee-scope-bar label,.student-picker-tools label{margin:0}.fee-scope-copy{align-self:center}.fee-scope-copy b,.student-picker-head b{display:block;color:var(--tb-ink);font-size:13px}.fee-scope-copy span,.student-picker-head span{display:block;color:var(--tb-text-meta);font-size:11px;font-weight:600;margin-top:3px}.money-positive{color:var(--tb-mint-text);font-weight:800}.money-credit{color:var(--tb-primary);font-weight:800}.money-due{color:var(--tb-danger);font-weight:800}.exception-pill{display:inline-flex;align-items:center;background:var(--tb-warning-tint);color:var(--tb-warning);border-radius:var(--tb-r-pill);padding:4px 5px 4px 10px;gap:5px;font-size:11px;font-weight:800;margin:2px 4px 2px 0}.exception-pill button{display:inline-grid;place-items:center;width:22px;height:22px;padding:0;border:0;border-radius:50%;background:transparent;color:currentColor;cursor:pointer}.exception-pill button:hover{background:color-mix(in srgb,currentColor 12%,transparent)}.exception-pill button svg{width:13px;height:13px}.student-selection{display:grid;grid-template-columns:repeat(2,minmax(220px,1fr));gap:6px;max-height:300px;overflow:auto;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);padding:8px}.student-picker{display:grid;gap:10px;margin-top:18px}.student-picker-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.student-picker-head .selection-count{flex:0 0 auto;margin:0;padding:5px 9px;border-radius:var(--tb-r-pill);background:var(--tb-primary-tint);color:var(--tb-primary);font-size:11px;font-weight:800}.student-picker-tools{display:grid;grid-template-columns:minmax(150px,1fr) minmax(150px,1fr) auto auto;gap:10px;align-items:end}.student-pick.selected{background:var(--tb-primary-tint);box-shadow:inset 0 0 0 1px var(--tb-primary)}.credential-callout{display:flex;align-items:center;gap:12px;padding:15px;background:var(--tb-warning-tint);border-radius:var(--tb-r-tile);color:var(--tb-warning)}.credential-callout svg{flex:0 0 auto}.credential-callout b{display:block}.credential-callout p{margin:3px 0 0;font-size:12px;color:var(--tb-warning);opacity:.85}.detail-list{margin:0;display:grid;gap:2px}.detail-list>div{display:grid;grid-template-columns:150px minmax(0,1fr);gap:14px;padding:10px 0;border-bottom:1px solid var(--tb-divider);align-items:center}.detail-list>div:last-child{border-bottom:none}.detail-list dt{color:var(--tb-text-meta);font-size:12px;font-weight:700}.detail-list dd{margin:0;font-weight:600;font-size:13px;color:var(--tb-ink);min-width:0;overflow-wrap:anywhere}.fee-summary{grid-template-columns:repeat(3,minmax(110px,1fr));margin-bottom:0}.fee-summary .metric .v{font-size:20px}.credential-list{margin:16px 0;display:grid;gap:2px}.credential-list>div{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--tb-divider)}.credential-list dt{color:var(--tb-text-meta);font-size:12px;font-weight:700}.credential-list dd{margin:0;font-weight:700}.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;word-break:break-all}.message-preview{max-width:520px;white-space:normal;line-height:1.55}.message-editor{width:100%;min-height:180px;resize:vertical;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-field);padding:13px;font:inherit;line-height:1.65;color:var(--tb-ink);background:var(--tb-surface);outline:none}.message-editor:focus{border-color:var(--tb-primary);box-shadow:var(--tb-focus-ring)}.lesson-toolbar select{width:min(360px,100%);margin:0;height:40px}.lesson-toolbar .btn{display:inline-flex;align-items:center}.table-note{display:block;color:var(--tb-text-meta);font-size:11.5px;margin-top:3px}.lesson-actions .btn{display:inline-flex;align-items:center}.document-chips{display:flex;flex-wrap:wrap;gap:5px;max-width:320px}.document-chips>span{display:inline-flex;align-items:center;gap:5px;padding:4px 9px;border-radius:var(--tb-r-pill);background:var(--tb-chip);font-size:11.5px;font-weight:700}.document-chips svg{width:13px;height:13px}.document-chips button{display:inline-flex;border:0;background:transparent;color:var(--tb-danger);padding:0;margin-left:2px}.document-chips button svg{width:12px;height:12px}.lesson-description{min-height:90px;margin-bottom:14px}.file-input{height:auto;padding:11px;margin-bottom:12px}.upload-file{display:flex;align-items:center;gap:10px;padding:13px;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);background:var(--tb-surface-alt);margin-bottom:14px}.upload-file>svg{width:24px;color:var(--tb-primary)}.upload-file div{display:grid;gap:3px}.upload-file span{color:var(--tb-text-meta);font-size:11.5px}.upload-progress{display:grid;grid-template-columns:1fr 50px;align-items:center;gap:12px;margin:14px 0}.upload-progress>div{height:10px;border-radius:var(--tb-r-pill);background:var(--tb-track);overflow:hidden}.upload-progress span{display:block;height:100%;background:var(--tb-mint);transition:width .2s}.upload-progress b{text-align:right;color:var(--tb-mint-text)}.grant-panel{display:grid;grid-template-columns:minmax(220px,1fr) 100px minmax(220px,1fr) auto auto;align-items:center;gap:10px;margin-top:16px;padding:14px;border:1px solid var(--tb-border);border-radius:var(--tb-r-tile);background:var(--tb-surface-alt)}.grant-panel>div{display:grid;gap:3px}.grant-panel span{font-size:11.5px;color:var(--tb-text-meta)}.grant-panel input{margin:0}.grant-panel .btn{display:inline-flex;align-items:center;justify-content:center}.form-grid .full{grid-column:1/-1}.announcement-body{display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--tb-text-meta);font-size:12px;margin-top:3px}.announcement-list-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 0 14px}.announcement-list-head h2{margin:0;font-size:15px}.announcement-workspace{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}.announcement-main{min-width:0}.announcement-admin-list{display:grid;gap:12px}.announcement-admin-card{position:relative;overflow:hidden;min-height:132px;padding:20px 22px;border:1px solid var(--tb-border);border-left:4px solid var(--tb-primary);border-radius:var(--tb-r-card-sm);background:var(--tb-surface);box-shadow:var(--tb-shadow-card)}.announcement-admin-card.scheduled{border-left-color:var(--tb-brand-secondary)}.announcement-admin-card.draft{border-left-color:var(--tb-text-disabled)}.announcement-card-meta{display:flex;align-items:center;gap:10px;min-width:0;color:var(--tb-text-meta);font-size:11.5px;font-weight:700}.announcement-status{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--tb-r-pill);background:var(--tb-primary-tint);color:var(--tb-primary);font-size:10.5px;font-weight:800;text-transform:uppercase;letter-spacing:0}.announcement-status.scheduled{background:var(--tb-purple-tint);color:var(--tb-brand-secondary)}.announcement-status.draft{background:var(--tb-chip);color:var(--tb-text-secondary)}.announcement-pin{display:inline-flex;align-items:center;gap:4px;color:var(--tb-warning)}.announcement-pin svg{width:13px;height:13px}.announcement-target{margin-left:auto;text-align:right}.announcement-card-content{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-top:11px}.announcement-card-content>div:first-child{min-width:0}.announcement-card-content h3{margin:0;color:var(--tb-ink);font-size:15px}.announcement-card-content p{margin:7px 0 0;color:var(--tb-text-secondary);font-size:12.5px;line-height:1.55;overflow-wrap:anywhere}.announcement-card-content small{display:block;margin-top:10px;color:var(--tb-mint-deep);font-weight:700}.announcement-card-actions{display:flex;gap:6px;flex:0 0 auto}.announcement-card-actions .icon-btn{width:32px;height:32px;border-radius:8px}.announcement-card-actions .icon-btn svg{width:15px;height:15px}.announcement-card-actions .icon-btn.danger{color:var(--tb-danger)}.announcement-side{position:sticky;top:24px;display:grid;gap:14px}.announcement-audience-panel{padding:20px;border:1px solid var(--tb-border);border-radius:var(--tb-r-card-sm);background:var(--tb-surface);box-shadow:var(--tb-shadow-card)}.announcement-audience-panel h3,.announcement-read-card h3{margin:0 0 14px;font-size:14px}.audience-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.audience-head h3{margin:0 0 14px}.link-btn{border:0;background:transparent;padding:0;color:var(--tb-primary);font-size:12px;font-weight:700;font-family:inherit}.link-btn:hover{color:var(--tb-primary-dark);text-decoration:underline}.announcement-audience-row{display:grid;grid-template-columns:20px minmax(0,1fr) auto;align-items:center;gap:10px;width:100%;text-align:left;min-height:48px;margin-top:8px;padding:0 13px;border:1px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface);color:var(--tb-text-secondary);font-size:12.5px;font-weight:700;font-family:inherit}.announcement-audience-row:hover{border-color:var(--tb-border-input);background:var(--tb-surface-alt)}.announcement-audience-row.active{border-color:transparent;background:var(--tb-primary-tint);color:var(--tb-primary)}.announcement-audience-row svg{width:17px;height:17px}.announcement-audience-row span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.announcement-audience-row b{color:inherit}.announcement-read-card{padding:20px;border-radius:var(--tb-r-card-sm);background:var(--tb-ink);color:var(--tb-on-dark)}.announcement-read-card strong{display:block;margin:2px 0 7px;color:var(--tb-mint-pale);font-family:var(--tb-font-display);font-size:36px;line-height:1}.announcement-read-card p{margin:0;color:var(--tb-on-dark-secondary);font-size:12px;line-height:1.55}.announcement-form-section>label{display:block}.announcement-segmented{margin:7px 0 0}.ranking-metrics{grid-template-columns:repeat(3,minmax(160px,1fr));max-width:760px}.ranking-ready{display:inline-flex;align-items:center;gap:6px;color:var(--tb-mint-text);font-weight:800;font-size:12px}.ranking-ready svg{width:16px;height:16px}.ranking-blocked{display:block;max-width:220px;color:var(--tb-warning);font-size:12px;font-weight:700;line-height:1.45}.ranking-preview{display:grid;gap:6px;min-width:230px}.ranking-preview>div{display:grid;grid-template-columns:24px minmax(110px,1fr) auto;align-items:center;gap:8px}.ranking-preview span{min-width:0}.ranking-preview b,.ranking-preview small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ranking-preview b{font-size:12px}.ranking-preview small{color:var(--tb-text-meta);font-size:10.5px;margin-top:1px}.ranking-preview strong{font-size:12px;color:var(--tb-primary)}.rank-medal{width:22px;height:22px;border-radius:50%;display:grid!important;place-items:center;font-size:10px!important;font-weight:900;color:var(--tb-ink)}.rank-1{background:var(--tb-sun)}.rank-2{background:var(--tb-sky)}.rank-3{background:var(--tb-mint)}.chapter-pick-grid{display:grid;grid-template-columns:repeat(3,minmax(170px,1fr));gap:8px;margin:12px 0 16px}.chapter-pick{display:flex;align-items:center;gap:9px;min-height:46px;padding:10px 12px;border:1.5px solid var(--tb-border);border-radius:var(--tb-r-field);background:var(--tb-surface);color:var(--tb-ink);font-size:12.5px;font-weight:700;cursor:pointer}.chapter-pick:hover{border-color:var(--tb-border-input);background:var(--tb-surface-alt)}.chapter-pick.selected{border-color:var(--tb-primary);background:var(--tb-primary-tint);color:var(--tb-primary)}.chapter-pick input{width:auto;height:auto;margin:0}.chapter-pick svg{width:17px;height:17px;flex:0 0 auto;color:var(--tb-primary)}.chapter-pick span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chapter-allocation-name{min-width:180px;vertical-align:middle!important}.chapter-allocation-name b,.chapter-allocation-name span{display:block}.chapter-allocation-name span{margin-top:4px;color:var(--tb-text-meta);font-size:11px}.allocation-input{width:88px;min-width:72px;margin:0!important}.distribution-total{display:flex;align-items:baseline;gap:4px;margin-top:12px}.distribution-total b{font-family:var(--tb-font-display);font-size:19px}@media(max-width:900px){.shell{grid-template-columns:minmax(0,1fr)}.side{position:sticky;z-index:20;height:auto;width:100%;min-width:0;padding:12px 14px;display:block}.brand{padding:2px 8px 10px}.nav-group,.rail-footer{display:none}.side nav{display:flex;width:100%;max-width:100%;gap:6px;overflow-x:auto;padding-bottom:2px;scrollbar-width:thin}.side nav button{flex:0 0 auto;white-space:nowrap;padding:9px 12px;width:auto}.briefing-cards{width:100%}.briefing-card{flex:1;width:auto;min-width:130px}.dash-columns{grid-template-columns:1fr}.filter-grid,.form-grid,.catalog-layout,.feature-grid,.report-layout{grid-template-columns:1fr 1fr}.catalog-shell{grid-template-columns:1fr}.grade-rail{flex-direction:row;overflow-x:auto}.grade-rail-kicker{display:none}.grade-row{flex:0 0 auto;min-width:150px}.chapter-card{flex-wrap:wrap}.chapter-cover{width:100%}.platform-metrics{grid-template-columns:repeat(3,minmax(140px,1fr))}.platform-video-filters{grid-template-columns:1fr 1fr}.platform-video-filters>div:last-child{grid-column:1/-1}.platform-teacher-picker{grid-template-columns:1fr 1fr}.platform-teacher-identity{grid-column:1/-1}.report-layout,.announcement-workspace{grid-template-columns:1fr}.live-session-row{grid-template-columns:46px minmax(0,1fr)}.live-session-actions{grid-column:1/-1;justify-content:flex-start;padding-left:60px}.announcement-side{position:static;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.image-row{grid-template-columns:1fr}.report-metrics,.fee-metrics{grid-template-columns:repeat(2,minmax(140px,1fr))}.fee-scope-bar{grid-template-columns:minmax(200px,1fr) minmax(140px,1fr) minmax(140px,1fr)}.fee-scope-copy{grid-column:1/-1}.student-picker-tools{grid-template-columns:minmax(140px,1fr) minmax(140px,1fr) auto}.student-picker-tools .btn:last-child{grid-column:1/-1;justify-self:end}.grant-panel{grid-template-columns:1fr 90px 1fr auto auto}.queue-row{flex-wrap:wrap}.queue-detail{min-width:0}}@media(max-width:620px){.main{padding:18px;min-width:0}.section-head{flex-direction:column;align-items:stretch}.toolbar.spread{align-items:stretch;flex-wrap:wrap}.toolbar.spread>.tabs{width:100%}.student-toolbar-actions{flex-basis:100%;width:100%}.student-toolbar-actions input{flex:1 1 auto;width:auto;min-width:0;max-width:none}.filter-grid,.form-grid,.form-grid.two,.option-row,.option-list,.catalog-layout,.catalog-form,.scope-editor,.scope-fields,.feature-grid,.upload-row,.student-selection,.grant-panel,.platform-video-filters,.fee-scope-bar,.student-picker-tools{grid-template-columns:1fr}.fee-scope-copy,.student-picker-tools .btn:last-child{grid-column:auto}.fee-scope-bar .btn,.student-picker-tools .btn{width:100%;justify-self:stretch}.student-picker-head{align-items:flex-start}.platform-teacher-picker{grid-template-columns:1fr}.platform-teacher-identity{grid-column:auto}.platform-video-filters>div:last-child{grid-column:auto}.platform-metrics{grid-template-columns:repeat(2,minmax(120px,1fr))}.announcement-list-head{align-items:flex-start}.announcement-card-meta{flex-wrap:wrap}.announcement-target{width:100%;margin-left:0;text-align:left}.announcement-card-content{flex-direction:column}.announcement-side{grid-template-columns:1fr}.live-session-toolbar{align-items:stretch;flex-direction:column}.live-session-toolbar .btn{width:100%}.live-session-row{grid-template-columns:38px minmax(0,1fr);padding:12px;gap:10px}.live-session-icon{width:38px;height:38px}.live-session-actions{padding-left:48px}.live-studio-layout{grid-template-columns:1fr}.live-hand-list{max-height:220px}.live-broadcast-controls{flex-wrap:wrap}.live-broadcast-spacer{display:none}.live-broadcast-controls .btn{flex:1 1 auto}.announcement-segmented{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%}.announcement-segmented button{justify-content:center;min-width:0;padding:8px}.correct-pick{margin-top:0}.credential-list>div{grid-template-columns:1fr;gap:4px}.chapter-pick-grid{grid-template-columns:1fr}.scope-editor-actions{justify-content:flex-start}.grade-create-panel{grid-template-columns:1fr;padding:14px 18px}.grade-create-panel .field-error{grid-column:1}.grade-create-control{grid-template-columns:1fr auto 34px}.modal-head-action{width:36px;padding:0;font-size:0;gap:0}.modal-head-action svg{width:16px;height:16px}}@media(max-width:900px){.chapter-pick-grid{grid-template-columns:repeat(2,minmax(170px,1fr))}}.course-offer{max-width:820px;min-width:0}.course-offer-section{padding:22px 0;border-bottom:1px solid var(--tb-border)}.course-offer-section:first-of-type{padding-top:0}.course-offer-section h2{margin:0 0 10px;font-size:18px}.course-offer-note,.course-offer-preview,.guardian-result-status{color:var(--tb-text-secondary);font-size:13px;line-height:1.6}.course-offer-section>.course-offer-note{margin:0 0 20px}.course-offer-notice{border-inline-start:3px solid var(--tb-primary);padding:10px 14px;background:var(--tb-primary-tint);line-height:1.6;margin:0 0 24px}.course-offer-url{display:flex;align-items:start;gap:10px}.course-offer-url input{flex:1;min-width:0;margin-bottom:0}.course-offer-preview{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:16px}.course-offer-preview a{display:inline-flex;align-items:center;gap:6px;color:var(--tb-primary);overflow-wrap:anywhere}.course-offer-preview a svg{flex:0 0 auto}.course-offer-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.course-trial-toggle{display:inline-flex;align-items:center;gap:10px;margin:0 0 22px;font-size:14px;color:var(--tb-ink)}.course-trial-toggle input{width:22px;height:22px;margin:0;accent-color:var(--tb-primary);flex:0 0 auto}.course-trial-counts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-trial-counts input{margin-bottom:0}.course-trial-counts+.course-offer-note{margin-top:12px;margin-bottom:0}.course-offer input:disabled{background:var(--tb-bg);color:var(--tb-text-secondary);cursor:not-allowed}.course-offer-footer{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:20px 0}.course-offer-success{color:var(--tb-mint-deep);font-weight:700;margin:0}.course-offer-load-error .btn{margin-top:12px}.course-offer .form-error{margin-bottom:12px;overflow-wrap:anywhere}.student-access-status{display:flex;align-items:flex-start;flex-direction:column;gap:6px}.submission-actions{display:grid;gap:8px;justify-items:start}.guardian-result-action{min-width:0;max-width:360px}.guardian-result-controls{display:flex;gap:6px;align-items:start}.guardian-result-controls .guardian-result-button{flex-shrink:1;min-width:0}.guardian-message-statuses{padding-inline-start:18px;margin:8px 0;white-space:normal;font-size:12px;line-height:1.6;overflow-wrap:anywhere}.guardian-result-status{margin:8px 0;white-space:normal;overflow-wrap:anywhere}.guardian-result-status.is-error{color:var(--tb-danger)}.guardian-result-button.btn{white-space:normal;text-align:start;height:auto;min-height:34px;padding-block:8px}.guardian-result-dialog{width:min(560px,calc(100% - 32px));max-height:calc(100dvh - 32px);border:1px solid var(--tb-border);color:var(--tb-ink);white-space:normal;font-weight:400;text-align:start}.guardian-result-dialog::backdrop{background:color-mix(in srgb,var(--tb-ink) 55%,transparent)}.guardian-result-dialog p{line-height:1.65;overflow-wrap:anywhere}.guardian-result-dialog .modal-head-copy h2{overflow-wrap:anywhere}.guardian-result-dialog .modal-actions{flex-wrap:wrap;gap:10px}.guardian-result-dialog .modal-actions .btn{white-space:normal;height:auto;min-height:44px;padding-block:10px}.guardian-result-student{display:grid;gap:4px}.guardian-result-student span{color:var(--tb-text-secondary)}@media(max-width:620px){.course-trial-counts{grid-template-columns:minmax(0,1fr)}.course-offer-preview{flex-direction:column;align-items:flex-start;gap:6px}.course-offer-footer .btn{width:100%;white-space:normal;height:auto;min-height:44px}.guardian-result-dialog{padding:18px}.guardian-result-dialog .modal-head{gap:10px}.guardian-result-dialog .modal-actions{margin:18px -18px -18px;padding:16px 18px}.guardian-result-dialog .modal-actions .btn{width:100%}}