:root{--bg:#fff;--fg:#1a1d23;--muted:#6b7280;--accent:#2f5fff;--accent-2:#d97706;--card:#fff;--border:#e5e7eb;--input-bg:#f9fafb;--pill-bg:#f3f4f6;--error:#dc2626;--ok:#16a34a}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.topnav{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;border-bottom:1px solid var(--border);background:hsla(0,0%,100%,.85);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);position:-webkit-sticky;position:sticky;top:0;z-index:10}.topnav .brand{font-weight:700;font-size:18px;color:var(--fg)}.topnav nav a{margin-left:18px;color:var(--muted)}main{max-width:900px;margin:0 auto;padding:32px 24px 80px}h1{font-size:28px;margin:0 0 8px}h2{font-size:20px;margin:24px 0 8px}p.lead{color:var(--muted);margin-top:0}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin:16px 0;box-shadow:0 1px 2px rgba(0,0,0,.04)}input[type=text],input[type=url],select,textarea{width:100%;background:var(--input-bg);color:var(--fg);border:1px solid var(--border);border-radius:6px;padding:10px 12px;font:inherit}textarea{resize:vertical;min-height:140px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}button{background:var(--accent);color:#fff;border:0;border-radius:6px;padding:10px 16px;font-weight:600;cursor:pointer}button:disabled{background:#e5e7eb;color:var(--muted);cursor:not-allowed}button.secondary{background:transparent;color:var(--fg);border:1px solid var(--border)}.row{display:flex;gap:12px;align-items:center}.row>*{flex:1 1}.row .shrink{flex:0 0 auto}.muted{color:var(--muted)}.error{color:var(--error)}.ok{color:var(--ok)}.tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:16px}.tabs button{background:transparent;color:var(--muted);border:0;border-bottom:2px solid transparent;border-radius:0;padding:10px 14px;font-weight:500}.tabs button.active{color:var(--fg);border-bottom-color:var(--accent)}.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;background:var(--pill-bg);border:1px solid var(--border);font-size:12px;color:var(--muted)}.pill .value{color:var(--fg);font-weight:600}.pill.score .value{color:var(--accent-2)}.pill.gz .value{color:var(--accent)}.progress{width:100%;height:8px;background:var(--pill-bg);border-radius:999px;overflow:hidden}.progress .bar{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .5s ease-out}.segment-list{list-style:none;margin:0;padding:0}.segment-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0;border-top:1px dashed var(--border);font-size:13px}.segment-list li:first-child{border-top:0}.segment-list .preview{color:var(--muted);flex:1 1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.stepper{margin-bottom:24px}.step,.stepper{display:flex;align-items:center;gap:8px}.step{color:var(--muted);font-size:13px}.step .dot{width:22px;height:22px;border-radius:50%;background:var(--pill-bg);border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:600}.step.active .dot{background:var(--accent);color:#fff;border-color:var(--accent)}.step.done .dot{background:var(--ok);color:#fff;border-color:var(--ok)}.stepper .sep{flex:1 1;height:1px;background:var(--border)}.output{white-space:pre-wrap;background:var(--input-bg);border:1px solid var(--border);border-radius:6px;padding:14px}