*{box-sizing:border-box}body{margin:0;min-height:100vh;background:#f3f6fb;color:#172b45;font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}.shell{max-width:1040px;margin:0 auto;padding:36px 24px 24px}header,.brand,.toolbar,.result-head,footer{display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{justify-content:flex-start}.logo{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:#fff;background:linear-gradient(140deg,#0e7490,#2563eb);font-size:24px;font-weight:800;box-shadow:0 8px 18px #2563eb30}.eyebrow,.label{font-size:11px;font-weight:750;letter-spacing:.1em;color:#75859b}.eyebrow{margin:0 0 2px}h1{font-size:21px;margin:0;letter-spacing:-.025em}.badge,.status{font-size:12px;font-weight:700;color:#08785e;background:#e5f5ee;padding:7px 11px;border-radius:999px}.intro{margin:36px 0 24px;padding:30px;border-radius:20px;background:linear-gradient(120deg,#122e52,#1d4e89);color:white;box-shadow:0 16px 35px #17324d1c}.intro h2{font-size:24px;margin:0 0 8px}.intro p{max-width:690px;margin:0;color:#d1e0f2}.toolbar,.result{background:white;border:1px solid #e2e9f2;border-radius:16px;padding:22px 24px;box-shadow:0 6px 20px #17324d08}.toolbar>div{display:grid;gap:5px}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#335777;font-size:13px}button{border:0;border-radius:11px;background:#1769d2;color:#fff;font-weight:700;padding:12px 17px;font-size:14px;cursor:pointer;box-shadow:0 6px 15px #1769d230}button:hover{background:#1058b7}button:disabled{opacity:.65;cursor:wait}.result{margin-top:20px}.result-head{align-items:flex-start;border-bottom:1px solid #edf1f6;padding-bottom:16px}.result h2{font-size:17px;margin:5px 0 0}.status{background:#f0f3f7;color:#67778b}.status.good{background:#e5f5ee;color:#08785e}.status.bad{background:#fff0ee;color:#bd392a}pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:56vh;overflow:auto;margin:0;padding:19px 3px 3px;color:#30445d;font:13px/1.65 ui-monospace,SFMono-Regular,Menlo,monospace}.notice{margin-top:18px;padding:13px 16px;background:#fff2ef;color:#9d3327;border:1px solid #f5d6d0;border-radius:12px}.notice[hidden]{display:none}footer{margin:22px 4px;color:#78889b;font-size:12px}footer a{color:#376b9f;text-decoration:none}footer a:hover{text-decoration:underline}@media(max-width:650px){.shell{padding:22px 14px}.intro{margin-top:26px;padding:23px}.toolbar{align-items:flex-start;flex-direction:column}.toolbar button{width:100%}footer{align-items:flex-start;flex-direction:column;gap:8px}.result{padding:18px}.result-head{gap:10px}}@media(prefers-reduced-motion:no-preference){button{transition:background .16s,transform .16s}button:active{transform:translateY(1px)}}