:root{--ink:#1a2332;--muted:#5a6472;--accent:#0f4c81;--accent-dark:#0d3a63;--line:#d8dee6;--bg-soft:#f4f6f9;--good:#1a7f37;--warn:#b7791f;--bad:#c0392b}*{box-sizing:border-box;margin:0}body{font-family:Segoe UI,Microsoft YaHei,PingFang SC,sans-serif;color:var(--ink);background:var(--bg-soft);line-height:1.6}a{color:var(--accent);text-decoration:none}header.top{background:var(--accent);color:#fff;padding:12px 24px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}header.top .brand{font-size:17px;font-weight:600}header.top nav a{color:#cfe3f5;font-size:14px}header.top nav a.on{color:#fff;font-weight:600;border-bottom:2px solid #fff;padding-bottom:2px}header.top .demo-tag{margin-left:auto;background:#fff3cd;color:#7a5b12;font-size:11px;padding:2px 10px;border-radius:10px}.wrap{max-width:1240px;margin:0 auto;padding:20px}.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;margin-bottom:16px;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13px}th{background:var(--accent);color:#fff;text-align:left;font-weight:600}td,th{border:1px solid var(--line);padding:7px 10px;vertical-align:top}tr:nth-child(2n) td{background:var(--bg-soft)}td.num{text-align:right;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}tr.hi td{background:#f8d7da}tr.lo td{background:#fff3cd}.badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;background:#e8f0f8;color:var(--accent)}.badge.esc{background:#f8d7da;color:var(--bad)}.badge.ok{background:#d4edda;color:var(--good)}.src{color:var(--muted);font-size:11.5px}pre{font-size:12px;white-space:pre-wrap;background:var(--bg-soft);padding:12px;border-radius:6px;border:1px solid var(--line)}h1{font-size:22px;margin-bottom:6px}h1,h2{color:var(--accent)}h2{font-size:16px;margin:18px 0 8px}h3{font-size:14px;margin:12px 0 6px}.sysflow{display:flex;gap:0;align-items:stretch;overflow-x:auto;padding:4px 0 12px}.layer{flex:1 1;min-width:168px;display:flex;flex-direction:column;gap:10px}.layer h4{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;text-align:center}.arrow{display:flex;align-items:center;padding:0 7px;color:#8a94a3;font-size:22px;flex:0 0 auto}.mod{background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 12px;display:block;color:var(--ink)}.mod .nm{font-weight:600;font-size:13px}.mod .ds{font-size:11px;color:var(--muted);margin:2px 0 6px;line-height:1.4}.mod .st{font-size:17px;font-weight:700;color:var(--accent);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.mod .su{font-size:10.5px;color:var(--muted)}.mod.ai{border-left:4px solid var(--accent)}.mod.det{border-left:4px solid var(--good)}.mod.hum{border-left:4px solid var(--warn)}.tag{display:inline-block;font-size:10px;padding:1px 7px;border-radius:9px;margin-left:6px;vertical-align:1px}.tag.ai{background:#e8f0f8;color:var(--accent)}.tag.det{background:#d4edda;color:var(--good)}.tag.hum{background:#fff3cd;color:#7a5b12}.legend{font-size:11.5px;color:var(--muted);margin:8px 0}.legend span{margin-right:18px}.hero{background:linear-gradient(135deg,#0f4c81,#0d3a63);color:#fff;border-radius:10px;padding:28px;margin-bottom:18px}.hero h1{color:#fff;font-size:26px}.hero p{color:#cfe3f5;max-width:760px;margin-top:6px}.rules{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap}.rule{flex:1 1;min-width:200px;background:rgba(255,255,255,.1);border-radius:8px;padding:10px 14px;font-size:12px;color:#e8f0f8}.rule b{display:block;color:#fff;margin-bottom:2px}.two-col{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}@media (max-width:900px){.two-col{grid-template-columns:1fr}}button.fake{padding:7px 16px;border:none;border-radius:6px;font-size:13px;margin-right:8px;opacity:.55;cursor:not-allowed}button.fake.ok{background:var(--good);color:#fff}button.fake.bad{background:var(--bad);color:#fff}button.fake.mid{background:var(--warn);color:#fff}.note{font-size:11.5px;color:var(--muted);margin-top:6px}