:root{--bg:#fafaf8;--fg:#1a1a1a;--muted:#6b6b6b;--card:#ffffff;--line:#e3e1dc;--accent:#0f6b4f;--accent-soft:#e7f2ee;--bad:#b3382c;--bad-soft:#f9ebe9;--warn:#8a6d1a}@media (prefers-color-scheme:dark){:root{--bg:#131313;--fg:#ececec;--muted:#9a9a9a;--card:#1c1c1c;--line:#2e2e2e;--accent:#4fbf95;--accent-soft:#163028;--bad:#e0705f;--bad-soft:#351d1a;--warn:#d3b25a}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.55 -apple-system,Segoe UI,Helvetica,Arial,sans-serif}.top{display:flex;justify-content:space-between;align-items:center;padding:14px 24px;border-bottom:1px solid var(--line)}.brand{font-weight:700;color:var(--fg)}.brand,nav a{text-decoration:none}nav a{margin-left:18px;color:var(--muted)}nav a:hover{color:var(--accent)}main{max-width:1080px;margin:0 auto;padding:24px}h1{font-size:22px;margin:0 0 4px}.sub{color:var(--muted);margin:0 0 24px}.grid{display:grid;grid-template-columns:2fr 1fr;grid-gap:20px;gap:20px}@media (max-width:800px){.grid{grid-template-columns:1fr}}.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin-bottom:16px}.card h2{font-size:15px;margin:0 0 10px}.step{font-size:12px;text-transform:uppercase;letter-spacing:.05em}.step,label{color:var(--muted)}label{display:block;font-size:13px;margin:8px 0 2px}input,select{width:100%;padding:7px 9px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);font:inherit}button{margin-top:12px;padding:8px 16px;border:0;border-radius:6px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer}button:disabled{opacity:.5;cursor:wait}button.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}.result{margin-top:12px;padding:10px 12px;border-radius:6px;font-size:13px;background:var(--accent-soft);overflow-x:auto}.result.err{background:var(--bad-soft);color:var(--bad)}.result code{word-break:break-all}.kv{display:flex;justify-content:space-between;padding:4px 0;font-size:14px;border-bottom:1px dashed var(--line)}.kv:last-child{border-bottom:0}.kv b{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.badge{display:inline-block;padding:1px 8px;border-radius:999px;font-size:12px}.badge.ok{background:var(--accent-soft);color:var(--accent)}.badge.bad{background:var(--bad-soft);color:var(--bad)}.badge.sim{background:transparent;border:1px dashed var(--muted);color:var(--muted)}table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:600}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:12px;gap:12px;margin:18px 0}.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 14px}.stat .n{font-size:20px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.stat .l{color:var(--muted);font-size:12px}details{margin-top:6px}summary{cursor:pointer;color:var(--accent);font-size:13px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.warn{color:var(--warn)}