:root{--bg:#f5f5f7;--bg-strong:#ededf0;--surface:#ffffffc7;--surface-strong:#ffffffeb;--surface-soft:#ffffff9e;--surface-input:#ffffffe0;--surface-elevated:#fffffff5;--text:#1d1d1f;--muted:#6e6e73;--line:#1d1d1f14;--line-strong:#1d1d1f1f;--accent:#0071e3;--accent-deep:#005bb5;--success:#1f7a53;--accent-soft:#0071e314;--accent-soft-strong:#0071e31f;--success-soft:#1f7a531f;--danger-soft:#b9422a14;--danger-soft-strong:#b9422a1f;--tag-surface:#ffffffc2;--tag-admin-bg:#0071e31a;--tag-admin-border:#0071e32e;--tag-admin-text:#0d63d4;--tag-curator-bg:#0071e31a;--tag-curator-border:#0071e32e;--tag-curator-text:#2f5b78;--tag-student-bg:#1f7a531f;--tag-student-border:#1f7a532e;--tag-student-text:#335f4d;--tag-draft-bg:#b9422a14;--tag-draft-border:#b9422a24;--tag-draft-text:#8a4f45;--tag-published-bg:#0071e31a;--tag-published-border:#0071e32e;--tag-published-text:#2f5b78;--tag-archived-bg:#8e8e931f;--tag-archived-border:#8e8e9329;--tag-archived-text:#56565be6;--shadow:0 14px 40px #0f172a14;--radius-xl:28px;--radius-lg:20px;--radius-md:14px;--font-sans:"SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#07111d;--bg-strong:#0b1625;--surface:#0b121eb8;--surface-strong:#0f1726e6;--surface-soft:#0e1828a8;--surface-input:#121b2adb;--surface-elevated:#0a121eeb;--text:#f3f7ff;--muted:#98a8bf;--line:#94a3b829;--line-strong:#94a3b838;--accent:#4f9cff;--accent-deep:#91c4ff;--success:#5ed0a4;--accent-soft:#4f9cff1a;--accent-soft-strong:#4f9cff24;--success-soft:#1f7a5329;--danger-soft:#b9422a14;--danger-soft-strong:#b9422a1f;--tag-surface:#121b2adb;--tag-admin-bg:#4f9cff1f;--tag-admin-border:#4f9cff33;--tag-admin-text:#d7eaff;--tag-curator-bg:#4f9cff24;--tag-curator-border:#4f9cff33;--tag-curator-text:#cfe5ff;--tag-student-bg:#39b28124;--tag-student-border:#39b28133;--tag-student-text:#c9f4e3;--tag-draft-bg:#b9422a1f;--tag-draft-border:#b9422a2e;--tag-draft-text:#ffd0bf;--tag-published-bg:#4f9cff24;--tag-published-border:#4f9cff33;--tag-published-text:#cfe5ff;--tag-archived-bg:#8e8e931f;--tag-archived-border:#8e8e9329;--tag-archived-text:#c6cfdce6;--shadow:0 20px 60px #00000057;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html{min-height:100%}html.theme-animating body,html.theme-animating .site-header,html.theme-animating .hero-card,html.theme-animating .panel,html.theme-animating .feature-card,html.theme-animating .dashboard-card,html.theme-animating .page-link-card,html.theme-animating .homework-item,html.theme-animating .student-panel,html.theme-animating .student-row,html.theme-animating .curator-review-item,html.theme-animating .curator-review-preview-card,html.theme-animating .curator-review-submission,html.theme-animating .curator-review-history-item,html.theme-animating .group-rating-card,html.theme-animating .weekly-competition-card,html.theme-animating .weekly-leader-card,html.theme-animating .week-tabs-sticky,html.theme-animating .widget-shell,html.theme-animating .dev-login-box,html.theme-animating .button,html.theme-animating .button-secondary,html.theme-animating .tag,html.theme-animating .page-kicker,html.theme-animating .admin-apple-kicker,html.theme-animating .field input,html.theme-animating .field textarea,html.theme-animating .student-search-input,html.theme-animating .course-inline-input,html.theme-animating .course-inline-textarea,html.theme-animating .apple-select-trigger,html.theme-animating .apple-select-dropdown,html.theme-animating .apple-date-dropdown,html.theme-animating .profile-trigger,html.theme-animating .profile-menu-dropdown,html.theme-animating .confirm-modal,html.theme-animating .stats-search-input,html.theme-animating .homework-preview-meta-card,html.theme-animating .curator-homework-meta-card,html.theme-animating .homework-preview-link,html.theme-animating .theme-toggle-track,html.theme-animating .theme-toggle-thumb,html.theme-animating .theme-toggle-thumb-glow,html.theme-animating .theme-toggle-thumb-moon,html.theme-animating .theme-toggle-orb-sun,html.theme-animating .theme-toggle-stars{transition:background 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#94a3b814}.brand{gap:4px;display:grid}.brand-mark{text-transform:uppercase;letter-spacing:.16em;color:var(--accent-deep);font-size:.75rem}.brand-title{font-size:1.15rem;font-weight:700}.nav{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.profile-trigger{border:1px solid var(--line);cursor:pointer;background:#ffffffb8;border-radius:999px;align-items:center;gap:12px;min-width:0;padding:8px 12px 8px 8px;display:inline-flex}:root[data-theme=dark] .profile-trigger{background:#0c1421b8;border-color:#94a3b824;box-shadow:0 12px 28px #00000038,inset 0 1px #ffffff0a}.profile-trigger-avatar{width:42px;height:42px;color:var(--accent-deep);background:linear-gradient(#0071e314,#0071e324);border:1px solid #0071e31f;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;font-weight:600;display:inline-flex;overflow:hidden}:root[data-theme=dark] 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#0000002e}.button:hover,.button-secondary:hover,.nav-link:hover{transform:translateY(-1px)}:root[data-theme=dark] .button:hover{background:linear-gradient(#243858f0,#16243afa);border-color:#84b0ec3d}.button-secondary{border:1px solid var(--line);color:var(--text);cursor:pointer;background:#ffffff8f}:root[data-theme=dark] .button-secondary{background:#0f1726bd;border-color:#94a3b824;box-shadow:0 10px 24px #00000029}:root[data-theme=dark] .button-secondary:hover,:root[data-theme=dark] .nav-link:hover{background:#4f9cff14}.theme-toggle{cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;width:78px;height:42px;padding:0;display:inline-flex;position:relative}.theme-toggle-track{background:linear-gradient(#c3e4fff5,#8ac6ffe0);border:1px solid #0071e324;border-radius:999px;width:78px;height:42px;transition:background .28s,border-color .28s,box-shadow .28s;position:relative;overflow:hidden;box-shadow:inset 0 1px #ffffffc7,0 10px 26px #4f9cff2e}.theme-toggle-thumb{background:radial-gradient(circle at 30% 30%,#fffffffa,#fffce9eb);border-radius:999px;justify-content:center;align-items:center;width:32px;height:32px;transition:transform .32s cubic-bezier(.22,1,.36,1),background .28s,box-shadow .28s;display:inline-flex;position:absolute;top:4px;left:4px;box-shadow:0 8px 16px #0f172a29,inset 0 1px #ffffffc7}.theme-toggle-thumb-glow{background:linear-gradient(#ffd266fa,#ffb83ef0);border-radius:999px;width:12px;height:12px;transition:transform .28s,background .28s,box-shadow .28s;box-shadow:0 0 10px #ffc65438,inset 0 1px #fff5c994}.theme-toggle-thumb-moon{opacity:0;border-radius:999px;width:14px;height:14px;transition:opacity .22s,transform .32s 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span:nth-child(3){top:9px;left:38px}.theme-toggle.is-dark .theme-toggle-track{background:linear-gradient(#17233afa,#0b1322f0);border-color:#79a2e82e;box-shadow:inset 0 1px #ffffff0a,0 12px 28px #0000004d}.theme-toggle.is-dark .theme-toggle-thumb{background:radial-gradient(circle at 30% 30%,#586a8cf5,#28354ef0);transform:translate(36px);box-shadow:0 8px 16px #0000003d,inset 0 1px #ffffff14}.theme-toggle.is-dark .theme-toggle-thumb-glow{opacity:0;box-shadow:none;background:#aabce41f;transform:scale(.7)}.theme-toggle.is-dark .theme-toggle-orb-sun{opacity:0;transform:translateY(-4px)}.theme-toggle.is-dark .theme-toggle-stars{opacity:1;transform:translateY(0)}.theme-toggle.is-dark .theme-toggle-clouds{opacity:0;transform:translateY(4px)}.theme-toggle.is-dark .theme-toggle-thumb-moon{opacity:1;transform:scale(1)rotate(0)}.hero{grid-template-columns:minmax(0,1.25fr) minmax(320px,.85fr);align-items:stretch;gap:24px;padding:20px 0 56px;display:grid}.hero-card,.panel,.feature-card,.dashboard-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.hero-copy{padding:36px}.hero-copy h1{letter-spacing:-.04em;margin:0;font-size:clamp(2.5rem,6vw,4.8rem);line-height:.95}.hero-copy p,.muted{color:var(--muted);line-height:1.6}.eyebrow{color:var(--accent-deep);background:#c4632d1a;border:1px solid #c4632d24;border-radius:999px;align-items:center;gap:8px;margin-bottom:18px;padding:8px 14px;display:inline-flex}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:26px;display:flex}.section-tabs{flex-wrap:wrap;gap:12px;display:flex}.section-tab{border:1px solid var(--line);color:var(--muted);background:#ffffff9e;border-radius:999px;align-items:center;padding:12px 18px;display:inline-flex}.section-tab.active{color:var(--accent-deep);background:#c4632d1f;border-color:#c4632d3d}.stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:28px;display:grid}.stat{border-radius:var(--radius-md);border:1px solid var(--line);background:#ffffff8f;padding:16px}.stat strong{font-size:1.4rem;display:block}.group-rating-list{gap:12px;display:grid}.course-filter-row,.week-tabs{flex-wrap:wrap;gap:12px;display:flex}.week-tabs-sticky{z-index:12;border-radius:var(--radius-lg);background:var(--surface-elevated);border:1px solid var(--line);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:12px;position:sticky;top:12px}.stats-search-row{width:min(100%,460px)}.stats-search-input{background:var(--surface-elevated)}.group-rating-card{border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--surface);gap:12px;padding:18px;display:grid}.group-rating-head{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;display:grid}.group-rating-list-compact{width:min(100%,860px)}.group-rating-card-compact{padding:16px}.group-rating-card-top-leader{border-color:var(--line-strong);background:radial-gradient(circle at top right, #4f9cff1f, transparent 34%), var(--surface-elevated);box-shadow:0 14px 34px #0f172a1a}.group-rating-head-compact{grid-template-columns:auto minmax(0,1fr) auto;gap:12px}.leader-inline-badge{border:1px solid var(--tag-curator-border);background:var(--accent-soft-strong);width:fit-content;color:var(--accent-deep);border-radius:999px;align-items:center;padding:6px 10px;font-size:.82rem;display:inline-flex}.group-rating-place,.group-rating-score{border:1px solid var(--line);background:var(--surface-elevated);white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;padding:10px 14px;display:inline-flex}.group-rating-place{color:var(--accent-deep);font-weight:700}.group-rating-score{color:var(--accent-deep);background:color-mix(in srgb, var(--accent-soft-strong) 88%, white 12%);border-color:color-mix(in srgb, var(--tag-curator-border) 88%, transparent);box-shadow:inset 0 1px #ffffff75}.group-rating-score-top-leader{border:1px solid var(--line-strong);background:radial-gradient(circle at top right, #4f9cff1f, transparent 42%), var(--surface-elevated);min-width:86px;color:var(--accent-deep);border-radius:22px;justify-items:center;gap:4px;padding:12px 16px;display:grid;box-shadow:inset 0 1px #ffffff80,0 12px 28px #0f172a0f}.group-rating-score-top-leader strong{font-size:1.5rem;line-height:1}.group-rating-bar{border:1px solid color-mix(in srgb, var(--line) 88%, transparent);background:linear-gradient(180deg, color-mix(in srgb, var(--surface-elevated) 96%, transparent), color-mix(in srgb, var(--surface-soft) 94%, 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#ffffff75,0 8px 20px #0f172a0a}.group-weekly-bar-fill{background:linear-gradient(180deg, color-mix(in srgb, var(--accent) 50%, white 50%) 0%, color-mix(in srgb, var(--accent) 78%, #96cbff 22%) 100%);border-radius:999px;width:100%;max-width:34px;min-height:6px;box-shadow:inset 0 1px #fff6,0 10px 22px #0071e31f}.weekly-competition-list{gap:18px;display:grid}.weekly-competition-card{border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--surface);gap:14px;padding:18px;display:grid}.weekly-competition-head{justify-content:space-between;align-items:center;display:flex}.weekly-competition-card-compact{width:min(100%,900px)}.weekly-leader-card{border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:radial-gradient(circle at top right, #4f9cff1f, transparent 34%), var(--surface-elevated);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;padding:20px;display:grid}.weekly-leader-copy{gap:8px;display:grid}.weekly-leader-copy h3,.weekly-leader-copy p{margin:0}.weekly-leader-score{border:1px solid var(--line-strong);background:radial-gradient(circle at top right, #4f9cff1f, transparent 42%), var(--surface-elevated);min-width:118px;color:var(--accent-deep);border-radius:22px;justify-items:center;gap:6px;padding:18px;display:grid;box-shadow:inset 0 1px #ffffff80,0 14px 32px #0f172a14}.weekly-leader-score strong{font-size:1.8rem;line-height:1}.hero-side{gap:18px;display:grid}.page-stack{gap:22px;padding:18px 0 56px;display:grid}.page-header{gap:12px;padding:6px 4px 0;display:grid}.page-header-inline{grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:18px}.page-kicker{width:fit-content;min-height:34px;color:var(--text);letter-spacing:-.01em;background:#ffffffc7;border:1px solid #1d1d1f14;border-radius:999px;justify-content:center;align-items:center;padding:0 14px;font-size:.9rem;font-weight:500;display:inline-flex;box-shadow:inset 0 1px #ffffffb8}.page-title{letter-spacing:-.04em;margin:0;font-size:clamp(2.2rem,4vw,3.6rem);line-height:.96}.page-copy{max-width:760px;color:var(--muted);margin:0;font-size:1.02rem;line-height:1.6}.page-grid{gap:18px;display:grid}.page-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.page-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.page-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.page-grid-home{grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);align-items:start}.page-grid-login{grid-template-columns:minmax(0,1fr) minmax(320px,420px);align-items:start}.page-rail{align-self:stretch;gap:18px;display:grid}.page-chip-row{flex-wrap:wrap;gap:10px;display:flex}.page-link-card{border:1px solid var(--line);background:var(--surface);color:var(--text);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:24px;gap:8px;padding:22px;text-decoration:none;transition:transform .18s,border-color .18s,box-shadow 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.student-trigger-cross{opacity:1;transform:scale(1)}.confirm-modal-backdrop{z-index:120;-webkit-backdrop-filter:blur(12px)saturate(1.05);backdrop-filter:blur(12px)saturate(1.05);background:radial-gradient(circle at top,#0071e31f,#0000 36%),#0f172a3d;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.confirm-modal{-webkit-backdrop-filter:blur(24px)saturate(1.08);backdrop-filter:blur(24px)saturate(1.08);background:#ffffffe6;border:1px solid #0f172a14;border-radius:28px;gap:16px;width:min(100%,520px);padding:28px;display:grid;box-shadow:0 28px 80px #0f172a2e,inset 0 1px #ffffffd1}.confirm-modal.curator-review-modal{width:min(1360px,100vw - 48px);max-width:none;max-height:calc(100vh - 48px)}.confirm-modal h3,.confirm-modal p{margin:0}.confirm-modal-actions{justify-content:flex-end;align-items:center;gap:12px;margin-top:8px;display:flex}.confirm-modal-actions .button,.confirm-modal-actions .button-secondary{height:50px;min-height:50px;box-shadow:none;padding:12px 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