:root{--bg: #0a0f1c;--bg2: #101828;--card: #131e33;--card2: #1a2740;--line: #24334f;--text: #e2e8f0;--muted: #8fa1bd;--gold: #3b82f6;--gold2: #7fb0fb;--green: #10b981;--red: #ef4444;--blue: #38bdf8;--radius: 14px;--navbg: rgba(10,15,28,.96);--btntext: #ffffff}:root[data-theme=light]{--bg: #f1f5f9;--bg2: #e5eaf2;--card: #ffffff;--card2: #f4f7fb;--line: #d3dce8;--text: #0f1c30;--muted: #55677f;--gold: #1d4ed8;--gold2: #1e40af;--green: #15803d;--red: #b91c1c;--blue: #0369a1;--navbg: rgba(255,255,255,.96);--btntext: #ffffff}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.app{max-width:860px;margin:0 auto;padding:16px 16px 90px}a{color:var(--gold2)}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 0 18px}.brand{display:flex;align-items:center;gap:10px}.badge-star{width:38px;height:38px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#60a5fa,#2563eb 62%,#1e3a8a);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px;box-shadow:0 2px 8px #0006}.brand h1{font-size:18px;letter-spacing:.5px}.brand small{display:block;color:var(--muted);font-size:11px;font-weight:400}.pillrow{display:flex;gap:8px;align-items:center}.pill{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:13px;color:var(--text);white-space:nowrap}.pill b{color:var(--gold2)}.nav{position:fixed;bottom:0;left:0;right:0;z-index:50;background:var(--navbg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--line);display:flex;justify-content:center;gap:4px;padding:6px 8px calc(6px + env(safe-area-inset-bottom))}.nav button{flex:1;max-width:130px;background:none;border:none;color:var(--muted);font-size:11px;padding:6px 2px;cursor:pointer;border-radius:8px;display:flex;flex-direction:column;align-items:center;gap:2px}.nav button .ico{font-size:20px;line-height:1}.nav button.active{color:var(--gold2);background:#3b82f61a}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:14px}.card h2{font-size:16px;margin-bottom:4px}.card h3{font-size:14px;margin-bottom:8px}.sub{color:var(--muted);font-size:13px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media (max-width: 620px){.grid2{grid-template-columns:1fr}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(180deg,#4f94f7,#2563eb);color:var(--btntext);font-weight:700;font-size:15px;border:none;border-radius:10px;padding:12px 20px;cursor:pointer;transition:transform .06s ease}.btn:active{transform:scale(.98)}.btn.secondary{background:var(--card2);color:var(--text);border:1px solid var(--line);font-weight:600}.btn.small{padding:8px 14px;font-size:13px;border-radius:8px}.btn.danger{background:var(--red);color:#fff}.btn:disabled{opacity:.45;cursor:not-allowed}.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}select,input[type=text],input[type=email],input[type=number]{width:100%;background:var(--bg2);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px}label.f{display:block;font-size:12px;color:var(--muted);margin:12px 0 4px;text-transform:uppercase;letter-spacing:.06em}.checkrow{display:flex;align-items:center;gap:8px;padding:8px 0;font-size:14px;cursor:pointer}.checkrow input{width:16px;height:16px;accent-color:var(--gold)}.qmeta{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;color:var(--muted)}.timer{font-variant-numeric:tabular-nums;font-weight:700;color:var(--text)}.timer.low{color:var(--red)}.progressbar{height:6px;background:var(--bg2);border-radius:3px;overflow:hidden;margin-bottom:16px}.progressbar>div{height:100%;background:linear-gradient(90deg,var(--gold),var(--gold2));transition:width .3s}.qtext{font-size:17px;font-weight:600;margin-bottom:16px}.qdomain{display:inline-block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--gold2);background:#3b82f61f;border:1px solid rgba(59,130,246,.35);padding:2px 10px;border-radius:999px;margin-bottom:10px}.choice{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;background:var(--bg2);border:1px solid var(--line);border-radius:10px;color:var(--text);padding:13px 14px;margin-bottom:10px;font-size:15px;cursor:pointer;transition:border-color .12s,background .12s}.choice:hover{border-color:var(--gold)}.choice.selected{border-color:var(--gold2);background:#d9a4411a}.choice.correct{border-color:var(--green);background:#3dbf6e1f}.choice.wrong{border-color:var(--red);background:#e052521f}.choice .letter{font-weight:800;color:var(--gold2);min-width:18px}.explain{border-left:3px solid var(--blue);background:#4a90d914;padding:12px 14px;border-radius:0 8px 8px 0;margin:8px 0 14px;font-size:14px}.explain .ref{display:block;margin-top:6px;color:var(--muted);font-size:12px}.scorebig{font-size:52px;font-weight:800;text-align:center}.scorebig.pass{color:var(--green)}.scorebig.fail{color:var(--red)}.passlabel{text-align:center;font-size:15px;margin-bottom:18px;color:var(--muted)}.domrow{display:flex;align-items:center;gap:10px;padding:7px 0;font-size:13px}.domrow .name{flex:1}.bar{flex:2;height:8px;background:var(--bg2);border-radius:4px;overflow:hidden}.bar>div{height:100%;border-radius:4px}.pct{width:44px;text-align:right;font-variant-numeric:tabular-nums}.leveltag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.lv-0{background:#3a3f47;color:#c8ced8}.lv-1{background:#4a90d933;color:#8fc1f2;border:1px solid #4a90d966}.lv-2{background:#3dbf6e26;color:#6fdb98;border:1px solid #3dbf6e66}.lv-3{background:#3b82f626;color:var(--gold2);border:1px solid #3b82f666}.lb-row{display:flex;align-items:center;gap:12px;padding:10px 4px;border-bottom:1px solid var(--line);font-size:14px}.lb-row .rank{width:30px;font-weight:800;color:var(--gold2)}.lb-row .who{flex:1}.lb-row.me{background:#3b82f614;border-radius:8px}.badgegrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}.badge{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px 8px;text-align:center;font-size:12px}.badge .em{font-size:26px;display:block;margin-bottom:4px}.badge.locked{opacity:.35;filter:grayscale(1)}.statgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin-top:10px}.stat{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}.stat .n{font-size:22px;font-weight:800;color:var(--gold2)}.stat .l{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.notice{font-size:12px;color:var(--muted);border:1px dashed var(--line);border-radius:8px;padding:10px 12px;margin-top:12px}.center{text-align:center}hr.sep{border:none;border-top:1px solid var(--line);margin:14px 0}.tag{font-size:11px;background:var(--bg2);border:1px solid var(--line);border-radius:999px;padding:2px 8px;color:var(--muted)}.install-sheet{position:fixed;left:0;right:0;bottom:0;z-index:100;padding:12px 12px calc(70px + env(safe-area-inset-bottom));display:flex;justify-content:center;pointer-events:none}.install-card{pointer-events:auto;background:var(--card2);border:1px solid var(--gold);border-radius:14px;padding:16px 18px;max-width:420px;width:100%;box-shadow:0 10px 40px #0000008c;animation:sheetup .3s ease}@keyframes sheetup{0%{transform:translateY(30px);opacity:0}to{transform:none;opacity:1}}.install-steps{margin:10px 0 4px 18px;font-size:14px}.install-steps li{margin-bottom:6px}button.pill{cursor:pointer}.pill.iconbtn{border:1px solid var(--line);background:var(--card);font-size:13px}.pill.iconbtn:hover{border-color:var(--gold)}.refhead{display:flex;justify-content:space-between;align-items:center;width:100%;background:none;border:none;color:var(--text);cursor:pointer;padding:4px 0;font-size:14px;text-align:left}.reftable{width:100%;border-collapse:collapse;margin-top:8px;font-size:13px}.reftable td{padding:7px 8px;border-top:1px solid var(--line);vertical-align:top}.reftable td:first-child{font-weight:700;white-space:nowrap;color:var(--gold2)}.reflink{display:block;padding:9px 2px;border-bottom:1px solid var(--line);color:var(--text);text-decoration:none;font-size:14px}.reflink:last-child{border-bottom:none}.reflink:hover{color:var(--gold2)}.fc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;min-height:220px;display:flex;flex-direction:column;justify-content:center;text-align:center;margin-bottom:14px;cursor:pointer}.fc-front{font-size:18px;font-weight:650}.fc-back{font-size:15px}.fc-back .ans{font-size:17px;font-weight:800;color:var(--gold2);margin-bottom:10px;display:block}.fc-hint{color:var(--muted);font-size:12px;margin-top:16px;text-transform:uppercase;letter-spacing:.08em}.fc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.fc-grid button{border:1px solid var(--line);border-radius:10px;padding:12px 4px;background:var(--card2);color:var(--text);cursor:pointer;font-size:13px;font-weight:700}.fc-grid button small{display:block;font-weight:400;color:var(--muted);font-size:11px;margin-top:2px}.fc-grid .again{border-color:#ef444466}.fc-grid .again:hover{background:#ef444422}.fc-grid .hard{border-color:#f59e0b66}.fc-grid .hard:hover{background:#f59e0b22}.fc-grid .good{border-color:#3b82f666}.fc-grid .good:hover{background:#3b82f622}.fc-grid .easy{border-color:#10b98166}.fc-grid .easy:hover{background:#10b98122}