:root{color-scheme:light dark;--bg: #f6f7fb;--surface: #ffffff;--surface-2: #eef1f7;--ink: #1f2430;--ink-soft: #5c6577;--line: #e3e7ef;--brand: #3b6fd4;--brand-soft: #e4ecfb;--brand-ink: #ffffff;--accent: #2f9e6b;--accent-soft: #e2f4ea;--warn: #a9772a;--warn-soft: #fff3da;--warn-ink: #7a5a16;--danger: #d24b45;--danger-soft: #fbe3e1;--danger-ink: #a1332c;--rail-bg: #1f3550;--rail-ink: rgba(255, 255, 255, .82);--tint: 1a;--text-xs: .72rem;--text-sm: .8rem;--text-base: .9rem;--text-md: 1rem;--text-lg: 1.12rem;--text-xl: 1.45rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--radius: 14px;--radius-sm: 10px;--shadow: 0 1px 2px rgba(31, 36, 48, .05), 0 8px 24px rgba(31, 36, 48, .06);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--tap: 44px}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #12151c;--surface: #1a1f29;--surface-2: #232936;--ink: #e8ecf4;--ink-soft: 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a.active{font-weight:700;color:var(--ink);background:var(--surface-2)}.course-content{min-width:0}.plain-list{list-style:none;margin:0;padding:0}.plain-list.boxed{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.list-row{display:flex;justify-content:space-between;align-items:center;gap:var(--space-4);padding:.65rem .9rem;border-bottom:1px solid var(--line)}.plain-list:not(.boxed) .list-row{padding-left:0;padding-right:0}.list-row:last-child{border-bottom:none}.group-label{font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin:0 0 var(--space-2)}.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}.data-table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);font-size:.88rem}.data-table 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var(--brand);margin-bottom:var(--space-4)}.disc-toolbar{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap;margin-bottom:1.1rem}.disc-toolbar .select{flex:0 0 auto}.search-wrap{position:relative;flex:1 1 240px;display:flex;align-items:center}.search-icon{position:absolute;left:.6rem;font-size:var(--text-sm);opacity:.6;pointer-events:none}.search-input{width:100%;font-family:inherit;font-size:var(--text-base);padding:var(--space-2) 2rem var(--space-2) 2rem;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);color:var(--ink)}.search-clear{position:absolute;right:.35rem;font-size:var(--text-sm);color:var(--ink-soft);width:24px;height:24px;border-radius:50%}.search-clear:hover{background:var(--surface-2);color:var(--ink)}.disc-row-main{display:flex;flex-direction:column;gap:3px;text-align:left;flex:1;color:var(--ink)}.disc-row-main:hover .disc-title{color:var(--brand);text-decoration:underline}.disc-title{font-weight:600}.disc-meta{font-size:var(--text-sm);color:var(--ink-soft)}.discussion-post{border-left:3px solid var(--line)}.gc-connect{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap}.gc-logo{width:52px;height:52px;border-radius:12px;display:grid;place-items:center;font-size:1.6rem;background:var(--brand-soft);flex:0 0 auto}.gc-course{display:flex;gap:.7rem;align-items:flex-start;cursor:pointer}.gc-course input{margin-top:.2rem;width:auto;accent-color:var(--brand)}.gc-course.picked{outline:2px solid var(--brand);outline-offset:-2px}.gc-course input:disabled{opacity:.5}.callout{display:flex;gap:.7rem;align-items:flex-start;background:var(--brand-soft);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:.85rem var(--space-4);margin-bottom:1.25rem;font-size:var(--text-base)}.callout .callout-icon{font-size:1.1rem;line-height:1.4}.callout p{color:var(--ink-soft);font-size:.86rem}.subtle-callout{background:var(--surface-2);border-left-color:var(--accent)}@media (max-width: 900px){.dashboard-layout{display:flex;flex-direction:column-reverse}.todo-panel{position:static;top:auto}.todo-list a{padding:.35rem 0;min-height:var(--tap)}.todo-title{flex:1 1 auto}.todo-meta{margin-left:auto}}@media (max-width: 800px){.course-body{grid-template-columns:1fr}.course-nav{flex-direction:row;overflow-x:auto;border-right:none;border-bottom:1px solid var(--line);position:static}.course-nav a{min-height:var(--tap);display:flex;align-items:center}}@media (max-width: 640px){.content{padding:1.1rem .9rem 3rem}.page-head h1{font-size:1.3rem}.topbar{padding:.6rem .9rem;gap:var(--space-2)}.user-switcher{flex:1 1 100%}.user-switcher select{flex:1}.toolbar{flex-direction:column;align-items:stretch}.toolbar .toggle-group{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}.toolbar .toggle{flex:0 0 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.15rem;min-height:52px}.rail-item.active{border-left:none;border-top-color:var(--brand)}.rail-glyph{font-size:1.25rem}.rail-label{font-size:.6rem}.rail-main{order:1;padding-bottom:4.5rem}}.subject-chip{display:inline-flex;align-items:center;gap:.35rem;font-size:var(--text-xs);padding:.12rem var(--space-2);border-radius:99px;background:var(--surface-2);color:var(--ink);border:1px solid var(--line)}.subject-chip .legend-dot{width:7px;height:7px}