:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0a1020;--bg-2:#111a2e;--bg-3:#182340;--line:#26324d;--text:#f1f1f3;--muted:#9aa3b8;--accent:#f5b301;--accent-2:#ffcf4a;--ink-on-accent:#0f0f12;--danger:#e03131;--ok:#2f9e44;--warn:#f5a623;--info:#3a86ff;--radius:14px;--radius-sm:8px;--shadow:0 12px 32px #00000059;--sidebar-w:236px;--font:"Kanit", system-ui, -apple-system, "Segoe UI", sans-serif}@media (prefers-color-scheme:light){:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f6f8;--bg-2:#fff;--bg-3:#f0f0f4;--line:#e3e3ea;--text:#14141a;--muted:#6c6c7a;--shadow:0 12px 32px #14142814}}*,:before,:after{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.45}h1,h2,h3{letter-spacing:-.01em;margin:0;font-weight:600}h1{font-size:1.5rem}h2{font-size:1.1rem}h3{font-size:1rem}p{margin:0}a{color:var(--accent-2);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit;color:inherit}.muted{color:var(--muted)}.small{font-size:.85rem}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em}.nowrap{white-space:nowrap}.right{text-align:right}.row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.row.between{justify-content:space-between}.stack{gap:16px;display:grid}.shell{min-height:100vh}.sidebar{width:var(--sidebar-w);background:var(--bg-2);border-right:1px solid var(--line);z-index:20;flex-direction:column;gap:18px;padding:18px 14px;display:flex;position:fixed;inset:0 auto 0 0}.brand{align-items:center;gap:10px;padding:4px 8px;display:flex}.brand-mark{background:var(--accent);border-radius:8px;flex:none;width:28px;height:28px;position:relative}.brand-mark:after{content:"";border:5px solid #0000;border-left-color:var(--bg);position:absolute;top:9px;left:16px}.brand-word{letter-spacing:.02em;font-weight:700}.brand-word b{color:var(--accent);font-weight:700}.brand-sub{color:var(--muted);margin-left:auto;font-size:.8rem}.nav{gap:4px;display:grid}.nav-link{border-radius:var(--radius-sm);color:var(--muted);align-items:center;gap:10px;padding:9px 10px;font-weight:500;display:flex}.nav-link:hover{background:var(--bg-3);color:var(--text);text-decoration:none}.nav-link.active{background:var(--bg-3);color:var(--accent)}.sidebar-foot{border-top:1px solid var(--line);gap:10px;margin-top:auto;padding-top:14px;display:grid}.me{align-items:center;gap:10px;min-width:0;display:flex}.me-text{min-width:0}.me-name{white-space:nowrap;text-overflow:ellipsis;font-weight:500;overflow:hidden}.me-mail{white-space:nowrap;text-overflow:ellipsis;font-size:.8rem;overflow:hidden}.version{font-size:.75rem}.topbar{display:none}.main{margin-left:var(--sidebar-w);max-width:1360px;padding:28px 32px 48px}.page-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:20px;display:flex}.page-head p{color:var(--muted);margin-top:4px}@media (width<=900px){.sidebar{transition:transform .2s;transform:translate(-100%)}.sidebar.open{transform:none}.topbar{background:var(--bg-2);border-bottom:1px solid var(--line);z-index:10;align-items:center;gap:10px;padding:10px 14px;display:flex;position:sticky;top:0}.main{margin-left:0;padding:18px 16px 40px}}.backdrop{z-index:15;background:#00000073;position:fixed;inset:0}.card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}.card-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.grid{gap:16px;display:grid}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}@media (width<=1100px){.grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=760px){.grid.cols-2,.grid.cols-4{grid-template-columns:1fr}}.stat{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}.stat-label{color:var(--muted);font-size:.85rem}.stat-value{margin-top:4px;font-size:1.8rem;font-weight:600;line-height:1.2}.stat-hint{color:var(--muted);margin-top:4px;font-size:.8rem}.empty{color:var(--muted);text-align:center;border:1px dashed var(--line);border-radius:var(--radius);padding:24px}.error{color:var(--danger)}.note{background:var(--bg-3);border-left:3px solid var(--accent);border-radius:var(--radius-sm);color:var(--muted);padding:10px 14px;font-size:.9rem}.btn{border:1px solid var(--line);background:var(--bg-3);color:var(--text);cursor:pointer;white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-weight:500;line-height:1.2;display:inline-flex}.btn:hover:not(:disabled){filter:brightness(1.08)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--ink-on-accent)}.btn-ghost{background:0 0}.btn-danger{border-color:var(--danger);color:var(--danger);background:0 0}.btn-sm{padding:5px 12px;font-size:.85rem}.btn-icon{padding:6px 10px}.input,.select,.textarea{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);width:100%;color:var(--text);outline:none;padding:8px 12px}.input:focus,.select:focus,.textarea:focus{border-color:var(--accent)}.input::placeholder{color:var(--muted)}.field{gap:6px;display:grid}.field>label{color:var(--muted);font-size:.85rem}.form-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;display:grid}.switch{border:1px solid var(--line);background:var(--bg);cursor:pointer;border-radius:999px;flex:none;width:42px;height:24px;padding:0;transition:background .15s;position:relative}.switch .knob{background:var(--muted);border-radius:50%;width:18px;height:18px;transition:transform .15s,background .15s;position:absolute;top:2px;left:2px}.switch.on{background:var(--accent);border-color:var(--accent)}.switch.on .knob{background:var(--ink-on-accent);transform:translate(18px)}.switch:disabled{opacity:.5;cursor:wait}.pill{white-space:nowrap;border:1px solid #0000;border-radius:999px;align-items:center;gap:6px;padding:2px 10px;font-size:.78rem;font-weight:500;display:inline-flex}.pill.muted{background:var(--bg-3);color:var(--muted);border-color:var(--line)}.pill.ok{color:#5ad173;background:#2f9e4426}.pill.warn{color:var(--warn);background:#f5a62326}.pill.danger{color:#ff6b6b;background:#e0313126}.pill.info{color:#7aa9ff;background:#3a86ff26}.pill.accent{color:var(--accent);background:#f5b30126}@media (prefers-color-scheme:light){.pill.ok{color:#1f7a33}.pill.danger{color:#c92a2a}.pill.info{color:#1c5fd6}.pill.accent{color:#9a6f00}}.chip{background:var(--bg-3);border:1px solid var(--line);border-radius:999px;align-items:center;gap:6px;padding:2px 10px;font-size:.8rem;display:inline-flex}.chip.on{border-color:var(--accent);color:var(--accent)}.avatar{object-fit:cover;background:var(--bg-3);width:32px;height:32px;color:var(--muted);border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:.75rem;font-weight:600;display:inline-flex}.table-wrap{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);overflow-x:auto}.table{border-collapse:collapse;width:100%;font-size:.92rem}.table th,.table td{text-align:left;vertical-align:middle;border-bottom:1px solid var(--line);padding:10px 14px}.table th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;background:var(--bg-2);font-size:.8rem;font-weight:500;position:sticky;top:0}.table tbody tr:last-child td{border-bottom:none}.table tbody tr.clickable{cursor:pointer}.table tbody tr.clickable:hover{background:var(--bg-3)}.table .cell-title{font-weight:500}.table .cell-sub{color:var(--muted);font-size:.8rem}.drawer{background:var(--bg-2);border-left:1px solid var(--line);width:min(760px,100vw);box-shadow:var(--shadow);z-index:30;padding:22px 24px 40px;position:fixed;top:0;bottom:0;right:0;overflow-y:auto}.drawer-head{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:18px;display:flex}.drawer-backdrop{z-index:25;background:#00000080;position:fixed;inset:0}.section{margin-top:22px}.section>h3{margin-bottom:10px}.modal{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);color:var(--text);width:min(640px,100vw - 32px);box-shadow:var(--shadow);padding:0}.modal::backdrop{background:#0000008c}.modal-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-body{padding:18px 20px}.modal-foot{border-top:1px solid var(--line);justify-content:flex-end;gap:10px;padding:14px 20px;display:flex}.toasts{z-index:50;gap:8px;max-width:min(420px,100vw - 36px);display:grid;position:fixed;bottom:18px;right:18px}.toast{background:var(--bg-3);border:1px solid var(--line);border-left:4px solid var(--info);border-radius:var(--radius-sm);box-shadow:var(--shadow);align-items:flex-start;gap:10px;padding:10px 14px;display:flex}.toast.ok{border-left-color:var(--ok)}.toast.warn{border-left-color:var(--warn)}.toast.danger{border-left-color:var(--danger)}.toast button{color:var(--muted);cursor:pointer;background:0 0;border:none;margin-left:auto}.login{background:radial-gradient(1200px 600px at 80% -10%, #f5b3011f, transparent 60%), var(--bg);place-items:center;min-height:100vh;padding:24px;display:grid}.login-card{text-align:center;width:min(420px,100%);padding:32px 28px}.login-card .brand{justify-content:center;margin-bottom:18px}.login-card .brand-word{font-size:1.4rem}.spinner{border:2px solid var(--line);border-top-color:var(--accent);vertical-align:middle;border-radius:50%;width:18px;height:18px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg, var(--bg-3), var(--line), var(--bg-3));background-size:200% 100%;border-radius:6px;height:14px;animation:1.2s linear infinite shimmer}@keyframes shimmer{to{background-position:-200% 0}}.q-card.voided{opacity:.75}.q-no{background:var(--accent);min-width:30px;height:30px;color:var(--ink-on-accent);border-radius:999px;justify-content:center;align-items:center;padding:0 8px;font-weight:600;display:inline-flex}.q-text{font-size:1.02rem}.q-img{border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;max-width:320px;max-height:320px}.opts{gap:6px;margin:12px 0 0;padding:0;list-style:none;display:grid}.opt{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);align-items:flex-start;gap:10px;padding:8px 12px;display:flex}.opt.correct{border-color:var(--accent);background:#f5b3011a}.opt-key{background:var(--bg-3);border-radius:50%;flex:none;justify-content:center;align-items:center;min-width:24px;height:24px;font-size:.8rem;font-weight:600;display:inline-flex}.opt.correct .opt-key{background:var(--accent);color:var(--ink-on-accent)}.opt-check{color:var(--accent);margin-left:auto;font-weight:700}.explain{border-left:3px solid var(--line);background:var(--bg-3);border-radius:var(--radius-sm);margin-top:12px;padding:10px 14px}.passage{border-left:3px solid var(--info)}.math .katex-display{margin:6px 0;overflow-x:auto}