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var(--ease-standard)}.dash-cat:hover{background:var(--surface-hover);border-color:var(--border-default)}.dash-cat-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-md)}.dash-cat-icon--sage{background:var(--primary-50);color:var(--primary-700)}.dash-cat-icon--clay{background:var(--accent-clay-soft);color:var(--accent-clay)}.dash-cat-icon--info{background:var(--info-surface);color:var(--info-fg)}.dash-cat-icon--success{background:var(--success-surface);color:var(--success-fg)}.dash-cat-name{font-size:15px;font-weight:500;color:var(--text-primary)}.dash-cat-count{font-size:13px;font-weight:500;color:var(--text-tertiary)}.dash-newcourse{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;border-radius:var(--radius-lg);background:var(--primary-50);border:1px solid var(--primary-100);text-align:center;cursor:pointer;transition:background var(--motion-fast) 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var(--border-subtle);text-align:center}.exp-creator-avatar{width:48px;height:48px;border-radius:var(--radius-pill)}.exp-creator-name{font-size:15px;font-weight:600;color:var(--text-primary)}.exp-creator-org,.exp-creator-stat{font-size:13px;font-weight:500;color:var(--text-tertiary)}.exp-follow{display:inline-flex;align-items:center;gap:6px;margin-top:2px;padding:8px 18px;border-radius:var(--radius-pill);border:1px solid var(--border-default);background:var(--surface-raised);font-family:inherit;font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:background var(--motion-fast) var(--ease-standard),border-color var(--motion-fast) var(--ease-standard)}.exp-follow:hover{background:var(--surface-hover);border-color:var(--border-strong)}@media (max-width: 720px){.exp-featured{flex-direction:column}.exp-featured-cover{flex-basis:140px;height:140px}.exp-featured-medallion{left:24px;top:40px}}.reader{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden;background:var(--bg-canvas);color:var(--text-primary)}.reader-topbar{display:flex;align-items:center;gap:16px;height:56px;padding:0 20px;border-bottom:1px solid var(--border-subtle);background:var(--surface-raised);flex:0 0 auto}.reader-back{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:var(--radius-pill);border:1px solid var(--border-default);background:var(--surface-raised);font-family:var(--font-ui);font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:background var(--motion-fast) var(--ease-standard),border-color var(--motion-fast) 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th{font-weight:600;color:var(--text-secondary);background:var(--surface-sunken)}.reading-image{margin:8px 0 28px}.reading-image img{width:100%;height:auto;display:block;border-radius:var(--radius-lg);border:1px solid var(--border-subtle)}.reading-image figcaption,.reading-artifact-caption{margin-top:10px;font-family:var(--font-ui);font-size:13px;color:var(--text-tertiary);text-align:center}.reading-artifact{margin:8px 0 28px}.reading-artifact-frame{width:100%;border:1px solid var(--border-default);border-radius:var(--radius-lg);background:var(--surface-raised);display:block;transition:height var(--motion-content) var(--ease-standard)}.reading-artifact-loading{width:100%;min-height:200px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border-subtle);border-radius:var(--radius-lg);background:var(--surface-sunken)}.reading-artifact-spinner{width:22px;height:22px;border-radius:50%;border:2.5px solid var(--border-strong);border-top-color:var(--primary-600);animation:spin .7s linear infinite}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.quiz{margin:40px 0 0;padding:28px;border-radius:var(--radius-xl);background:var(--surface-raised);border:1px solid var(--border-subtle)}.quiz-heading{margin:0 0 20px;font-family:var(--font-display);font-size:20px;font-weight:600;color:var(--text-primary)}.quiz-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:28px}.quiz-q-stem{display:flex;gap:10px;margin:0 0 14px;font-family:var(--font-ui);font-size:15.5px;font-weight:550;line-height:1.5;color:var(--text-primary)}.quiz-q-n{flex:0 0 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var(--border-default);font-size:12px;font-weight:600;color:var(--text-secondary)}.quiz-option--correct{background:var(--success-surface);border-color:var(--success-border)}.quiz-option--correct .quiz-option-mark{background:var(--success-fg);border-color:var(--success-fg);color:#fff}.quiz-option--wrong{background:var(--error-surface);border-color:var(--error-border)}.quiz-option--wrong .quiz-option-mark{background:var(--error-fg);border-color:var(--error-fg);color:#fff}.quiz-option--muted{opacity:.6}.quiz-explain{margin:12px 0 0;padding:10px 14px;border-radius:var(--radius-md);font-family:var(--font-ui);font-size:13.5px;line-height:1.55}.quiz-explain--right{background:var(--success-surface);color:var(--success-fg)}.quiz-explain--wrong{background:var(--warning-surface);color:var(--warning-fg)}.reader-pager{display:flex;align-items:center;gap:16px;max-width:720px;margin:48px auto 0;padding-top:24px;border-top:1px solid var(--border-subtle)}.reader-pager-count{flex:1 1 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var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--elev-1)}.stat-tile-label{font-size:13px;font-weight:500;letter-spacing:.1px;color:var(--text-tertiary)}.stat-tile-valrow{display:flex;align-items:baseline;gap:10px}.stat-tile-value{font-family:var(--font-display);font-size:40px;font-weight:400;letter-spacing:-.6px;line-height:1.15;color:var(--text-primary)}.stat-tile-delta{display:inline-flex;align-items:center;gap:3px;font-family:var(--font-ui);font-size:13px;font-weight:500}.stat-tile-delta--up{color:var(--success-fg)}.stat-tile-delta--down{color:var(--error-fg)}.stat-tile-delta--flat{color:var(--text-tertiary)}.track{height:8px;border-radius:var(--radius-pill);background:var(--surface-sunken);overflow:hidden}.track--sm{height:6px}.track-fill{display:block;height:100%;border-radius:var(--radius-pill);background:var(--primary-600)}@media (max-width: 720px){.stat-row{flex-wrap:wrap}.stat-tile{flex-basis:calc(50% - 10px)}}.reader-topbar-title--lead{margin-right:auto}.reader-topbar-actions{margin-left:auto;display:inline-flex;align-items:center;gap:10px}.reader-topbar-tag{display:inline-flex;align-items:center;gap:5px}.reader-topbar-actions .reader-topbar-tag{margin-left:0}.reader-topbar-tag--org{background:var(--primary-50);border-color:var(--primary-100);color:var(--primary-700)}.reader-topbar-tag--public{background:var(--accent-clay-soft);border-color:var(--accent-clay-soft);color:var(--accent-clay)}.reader-topbar-tag--private{background:var(--surface-sunken);border-color:var(--border-default);color:var(--text-tertiary)}.reader-publish-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-pill);border:1px solid transparent;background:var(--primary-600);color:#fff;font-family:var(--font-ui);font-size:13px;font-weight:600;cursor:pointer;transition:filter var(--motion-fast) var(--ease-standard)}.reader-publish-btn:hover{filter:brightness(1.06)}.reader-empty a{margin-top:14px;display:inline-flex}.publish-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:flex;align-items:center;justify-content:center;padding:20px;background:#28221861;animation:publish-fade var(--motion-fast) var(--ease-standard)}@keyframes publish-fade{0%{opacity:0}to{opacity:1}}.publish-card{width:100%;max-width:460px;background:var(--surface-raised);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:0 24px 60px -20px #28221866;padding:22px;font-family:var(--font-ui)}.publish-head{display:flex;align-items:center;justify-content:space-between}.publish-head-title{display:inline-flex;align-items:center;gap:8px}.publish-head-title svg{color:var(--primary-600)}.publish-head 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