:root{--ink: #1b1b1b;--muted: #5a5a5a;--paper: #ffffff;--shade: #f5f5f4;--line: #dcdcdc;--accent: #14532d;--blocker: #7c2d12}*{box-sizing:border-box}body{margin:0;background:var(--shade);color:var(--ink);font:17px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.shell{max-width:720px;margin:0 auto;padding:20px 16px 60px}.descriptor{color:var(--muted);font-size:15px;margin:0 0 18px}h1{font-size:26px;margin:0 0 4px}h2{font-size:20px;margin:24px 0 10px}h3{font-size:18px;margin:0 0 6px}p{margin:0 0 10px}.muted{color:var(--muted);font-size:15px}.muted a{color:var(--accent)}nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}nav a{color:var(--ink);text-decoration:none;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}nav a[aria-current=page]{border-color:var(--accent);font-weight:600}.card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}.card--blocker{border-left:5px solid var(--blocker)}.badge{display:inline-block;font-size:14px;padding:2px 8px;border-radius:999px;background:var(--shade);color:var(--muted)}.facts{list-style:none;margin:10px 0 0;padding:0}.facts li{font-size:15px;color:var(--muted)}button,.button{font:inherit;font-size:17px;padding:12px 16px;min-height:48px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);cursor:pointer}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button:disabled{opacity:.5;cursor:not-allowed}.buttons{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px;align-items:center}.filters{display:flex;gap:16px;flex-wrap:wrap}.filters label{flex:1 1 12rem;min-width:12rem}label{display:block;margin:0 0 12px;font-size:15px;color:var(--muted)}input,select{font:inherit;font-size:17px;width:100%;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);margin-top:4px}.code{font-size:34px;letter-spacing:8px;font-weight:700;font-family:ui-monospace,SFMono-Regular,monospace}.error{color:var(--blocker)}.steps{list-style:none;padding:0;margin:0 0 18px}.steps li{padding:6px 0;color:var(--muted)}.steps li[data-state=current]{color:var(--ink);font-weight:600}.steps li[data-state=done] .step-mark{color:var(--accent)}.steps li[data-state=current] .step-mark{display:inline-block;font-size:13px;line-height:1.6;font-weight:600;padding:0 8px;border-radius:999px;margin-right:4px;background:var(--accent);color:#fff;vertical-align:1px}nav button.linklike{background:none;border:0;padding:0;margin:0;width:auto;font:inherit;color:inherit;text-decoration:underline;cursor:pointer}nav button.linklike[disabled]{opacity:.6;cursor:default}.lang{display:flex;align-items:center;gap:0;justify-content:flex-end;font-size:13px;line-height:1;letter-spacing:.06em;margin-bottom:12px}.lang__b{background:none;border:0;padding:2px 8px;min-height:0;font:inherit;color:var(--muted);cursor:pointer}.lang__b:hover{color:var(--ink)}.lang__b.on{color:var(--ink);font-weight:600;box-shadow:inset 0 -2px 0 var(--accent)}.pair-steps{margin:0 0 12px;padding-left:22px}.pair-steps li{margin-bottom:4px}.copyrow{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:0 0 10px}.copyrow__value{flex:1 1 14rem;min-width:0;overflow-wrap:anywhere;font-size:15px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--shade)}.copyrow .code{flex:0 0 auto}