:root{--bg:#f6f7fb;--surface:#fff;--border:#e4e7ee;--text:#1a1f2b;--text-muted:#5b6472;--brand:#1f3a8a;--brand-soft:#eef2ff;--radius:16px;--shadow:0 1px 2px #1018280a, 0 8px 24px #1018280f;--shadow-hover:0 2px 4px #1018280f, 0 16px 40px #1018281f}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}.page{flex-direction:column;min-height:100vh;display:flex}.container{width:100%;max-width:1040px;margin:0 auto;padding:0 24px}.hero{background:radial-gradient(1200px 400px at 50% -10%, var(--brand-soft), transparent 70%), var(--bg);text-align:center;padding:88px 0 56px}.brand-mark{border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow);color:var(--text-muted);border-radius:999px;align-items:center;gap:10px;margin-bottom:28px;padding:6px 14px 6px 8px;font-size:14px;font-weight:600;display:inline-flex}.brand-mark .dot{color:#fff;background:linear-gradient(135deg,#2563eb,#7c3aed);border-radius:8px;justify-content:center;align-items:center;width:24px;height:24px;font-size:14px;font-weight:800;display:inline-flex}.hero h1{letter-spacing:-.02em;margin:0 0 16px;font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;line-height:1.08}.hero h1 .accent{background:linear-gradient(135deg,#2563eb,#7c3aed);color:#0000;-webkit-background-clip:text;background-clip:text}.hero p{color:var(--text-muted);max-width:560px;margin:0 auto;font-size:clamp(1rem,2.2vw,1.2rem)}.tools{padding:24px 0 64px}.grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;display:grid}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;height:100%;padding:24px;transition:transform .18s,box-shadow .18s,border-color .18s;display:flex;position:relative}a.card:hover{box-shadow:var(--shadow-hover);border-color:#d3d8e4;transform:translateY(-3px)}.card.soon{opacity:.85}.card-icon{background:var(--brand-soft);border-radius:14px;justify-content:center;align-items:center;width:52px;height:52px;margin-bottom:18px;font-size:26px;display:inline-flex}.card-head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.card h2{margin:0;font-size:1.2rem;font-weight:700}.card .tagline{text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:4px 0 12px;font-size:.78rem;font-weight:600}.card p{color:var(--text-muted);flex:1;margin:0 0 20px;font-size:.95rem}.card-cta{align-items:center;gap:6px;font-size:.92rem;font-weight:600;display:inline-flex}.card-cta .arrow{transition:transform .18s}a.card:hover .card-cta .arrow{transform:translate(3px)}.badge-soon{color:var(--text-muted);border:1px solid var(--border);background:#f1f3f8;border-radius:999px;padding:3px 9px;font-size:.72rem;font-weight:600}.footer{border-top:1px solid var(--border);background:var(--surface);margin-top:auto;padding:28px 0}.footer-inner{color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;font-size:.9rem;display:flex}.footer-inner strong{color:var(--text);font-weight:600}.roster-hero{background:radial-gradient(900px 320px at 40% -20%, var(--brand-soft), transparent 70%), var(--bg);padding:48px 0 28px}.roster-back{color:var(--text-muted);margin-bottom:18px;font-size:.9rem;font-weight:600;display:inline-block}.roster-back:hover{color:var(--brand)}.roster-hero h1{letter-spacing:-.02em;margin:0 0 8px;font-size:clamp(1.8rem,4vw,2.4rem)}.roster-hero p{color:var(--text-muted);margin:0}.roster-main{padding:8px 0 64px}.roster-empty{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);text-align:center;box-shadow:var(--shadow);padding:36px 28px}.roster-empty h2{margin:0 0 8px}.roster-empty p{color:var(--text-muted);margin:0 0 20px}.roster-cta{background:var(--brand);color:#fff;border-radius:10px;padding:10px 16px;font-weight:700;display:inline-flex}.roster-grid{gap:16px;display:grid}.roster-class{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}.roster-class-head{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:12px;display:flex}.roster-class-head h2{margin:0;font-size:1.15rem}.roster-class-head span{color:var(--text-muted);font-size:.9rem}.roster-muted{color:var(--text-muted);margin:0}.roster-students{margin:0;padding:0;list-style:none}.roster-students li{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;padding:8px 0;display:flex}.roster-name{font-weight:500}.roster-code{background:var(--brand-soft);color:var(--brand);border-radius:6px;padding:3px 8px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85rem}