:root{--bg: #0b1020;--card: #121a33;--muted: #9aa6c3;--text: #e9eeff;--accent: #7aa2ff;--accent2: #62d6c8;--border: rgba(255,255,255,.1);--shadow: 0 12px 30px rgba(0,0,0,.35);color-scheme:dark}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,Noto Sans,"Apple Color Emoji","Segoe UI Emoji";background:radial-gradient(1200px 600px at 20% 10%,rgba(122,162,255,.14),transparent 55%),radial-gradient(900px 500px at 80% 0%,rgba(98,214,200,.12),transparent 55%),var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.container{max-width:1200px;margin:0 auto;padding:16px}.topbar{position:sticky;top:0;z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0b1020a6;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;padding:10px 0}.logo{width:36px;height:36px;border-radius:12px;background:radial-gradient(circle at 30% 30%,#bcd1ff 8%,transparent 9%),radial-gradient(circle at 72% 28%,#8ce8de 8%,transparent 9%),radial-gradient(circle at 70% 72%,#7aa2ff 8%,transparent 9%),linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 8px 20px #00000040;position:relative}.brand h1{font-size:18px;margin:0;letter-spacing:.2px}.brand .tag{font-size:12px;color:var(--muted);margin-top:2px}.nav{display:flex;gap:8px;flex-wrap:wrap;padding:10px 0 14px}.tab{padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#ffffff0a;color:var(--text);font-size:13px;transition:transform .08s ease,background .2s ease,border .2s ease;-webkit-user-select:none;user-select:none}.tab:hover{transform:translateY(-1px);background:#ffffff0f;border-color:#7aa2ff59}.tab.active{background:#7aa2ff2e;border-color:#7aa2ff8c}.grid{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}@media (max-width: 980px){.grid{grid-template-columns:1fr}}.card{background:#121a33bf;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.card-header{padding:14px 14px 10px;border-bottom:1px solid var(--border)}.card-header h2{font-size:15px;margin:0}.card-header p{margin:6px 0 0;color:var(--muted);font-size:12px;line-height:1.35}.card-body{padding:14px}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.button{padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#ffffff0a;color:var(--text);cursor:pointer;font-size:13px}.button.primary{background:#7aa2ff38;border-color:#7aa2ff8c}.button.danger{background:#ff78782e;border-color:#ff787859}.button:disabled{opacity:.5;cursor:not-allowed}.input,textarea{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#00000038;color:var(--text);outline:none}.input::placeholder,textarea::placeholder{color:#e9eeff59}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.pill{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:14px;border:1px solid var(--border);background:#0000002e;color:var(--muted);font-size:12px}hr.sep{border:none;border-top:1px solid var(--border);margin:14px 0}.small{color:var(--muted);font-size:12px;line-height:1.5}.katex-wrap{overflow-x:auto;padding:10px 12px;border-radius:12px;border:1px dashed rgba(255,255,255,.15);background:#0000002e}.table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:12px;border:1px solid var(--border)}.table th,.table td{padding:8px 10px;border-bottom:1px solid var(--border);font-size:12px}.table th{text-align:left;color:var(--muted);font-weight:600}.table tr:last-child td{border-bottom:none}.footer{margin-top:18px;color:var(--muted);font-size:12px;text-align:center;padding:14px 0 18px}.ad-grid{display:grid;grid-template-columns:1fr;gap:12px}@media (max-width: 980px){.hide-mobile{display:none!important}}.ad-skeleton{border-radius:12px;border:1px solid rgba(255,255,255,.12);background:#ffffff08;padding:8px;display:flex;align-items:center;justify-content:center}.ad-skeleton-inner{width:100%;height:100%;border-radius:8px;background:linear-gradient(90deg,#ffffff0f,#ffffff1f,#ffffff0f);display:flex;align-items:center;justify-content:center;color:#e9eeff9e;font-size:12px}@media (max-width: 980px){.ad-footer{display:none}}