:root{--bg:#f6f6fb;--surface:#fff;--surface-alt:#fbfbfe;--border:#e4e3ef;--border-strong:#d6d5e6;--text:#17171b;--muted:#6b6b78;--accent:#6867ff;--accent-soft:#efeeff;--down:#3d5feb;--up:#9b51e0;--self:#0d9488;--danger:#dc2626;--danger-soft:#fdecec;--radius:16px;--radius-sm:10px;--shadow:0 1px 2px rgba(23,23,27,.04),0 10px 28px -12px rgba(23,23,27,.14)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Gothic A1,-apple-system,Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--accent)}.wrap{max-width:1120px;margin:0 auto;padding:24px 24px 90px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;margin-bottom:18px;box-shadow:var(--shadow)}h1{font-size:22px;margin:0 0 6px}h1,h2{letter-spacing:-.01em}h2{font-size:16px;margin:0 0 12px}h2,h3{font-weight:700}h3{font-size:14px;margin:0 0 10px}.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px}.field label{font-size:12.5px;font-weight:600;color:var(--muted)}input,select,textarea{border:1px solid var(--border);border-radius:var(--radius-sm);padding:9px 11px;font-size:14px;font-family:inherit;color:var(--text);background:var(--surface);transition:border-color .15s ease,box-shadow .15s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}textarea{min-height:76px;resize:vertical}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--accent);color:#fff;border:1px solid transparent;border-radius:var(--radius-sm);padding:10px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:filter .15s ease,background .15s ease}.btn:hover{filter:brightness(.93)}.btn:disabled{opacity:.5;cursor:default}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border-strong)}.btn-secondary:hover{background:var(--surface-alt);filter:none}.btn-block{display:block;width:100%;margin-top:6px}.hint{font-size:12.5px;color:var(--muted);line-height:1.55}table{width:100%;border-collapse:collapse;font-size:13px}th{padding:8px 10px;color:var(--muted);font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}td,th{text-align:left;border-bottom:1px solid var(--border)}td{padding:9px 10px}tr:last-child td{border-bottom:none}.tabs{display:flex;gap:6px;margin:16px 0;flex-wrap:wrap}.tabs a{padding:9px 16px;border-radius:999px;text-decoration:none;color:var(--muted);border:1px solid transparent;font-size:13.5px;font-weight:600;transition:background .15s ease,color .15s ease}.tabs a:hover{background:var(--surface-alt);color:var(--text)}.tabs a.active{background:var(--accent);color:#fff;border-color:var(--accent)}.section-heading{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px 10px;margin:28px 0 14px;padding-bottom:9px;border-bottom:2px solid var(--border-strong);font-size:15px;font-weight:800;letter-spacing:-.01em}.section-heading:first-child{margin-top:2px}.section-heading .marker{display:inline-block;width:8px;height:8px;border-radius:2px;background:var(--accent);margin-right:8px;vertical-align:middle}.section-heading .pct{font-size:12px;font-weight:700;color:var(--accent);background:var(--accent-soft);padding:3px 10px;border-radius:999px;white-space:nowrap}.stat-grid{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px}.stat-tile{flex:1 1 130px;background:var(--surface-alt);border:1px solid var(--border);border-radius:12px;padding:12px 14px}.stat-tile .label{font-size:11px;color:var(--muted);font-weight:600;margin-bottom:5px}.stat-tile .value{font-size:21px;font-weight:800;letter-spacing:-.01em}.grade-badge{display:inline-block;min-width:26px;text-align:center;padding:3px 9px;border-radius:7px;color:#fff;font-weight:800;font-size:12.5px}.admin-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.admin-card{display:flex;flex-direction:column}.admin-card .hint{flex:1 1;margin:4px 0 14px}@media (max-width:760px){.admin-grid{grid-template-columns:1fr}}.skel{background:linear-gradient(90deg,var(--border) 25%,var(--bg) 37%,var(--border) 63%);background-size:400% 100%;animation:skel-shimmer 1.4s ease infinite;border-radius:6px}@keyframes skel-shimmer{0%{background-position:100% 50%}to{background-position:0 50%}}