:root{
  --blue:#1d4ed8;
  --blue-dark:#1e40af;
  --ink:#0f172a;
  --muted:#64748b;
  --bg:#f1f5f9;
  --card:#ffffff;
  --line:#e2e8f0;
  --radius:16px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--blue)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
.wrap.narrow{max-width:640px}

.topbar{background:rgba(255,255,255,.9);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;color:var(--ink);text-decoration:none;font-size:1.05rem}
.brand span{color:var(--blue);font-weight:600}
.topbar nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-size:.92rem}
.topbar nav a:hover{color:var(--blue)}

.hero{background:linear-gradient(135deg,#1e3a8a,#1d4ed8);color:#fff;padding:64px 0 56px}
.hero h1{font-size:clamp(1.7rem,4vw,2.6rem);line-height:1.15;max-width:640px}
.hero .lead{margin-top:14px;font-size:1.1rem;max-width:620px;opacity:.92}
.usp-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px}
.usp-row span{background:rgba(255,255,255,.14);padding:6px 14px;border-radius:999px;font-size:.9rem}

.steps{display:flex;gap:10px;margin:26px 0 20px;flex-wrap:wrap}
.step{background:var(--card);border:1px solid var(--line);color:var(--muted);padding:8px 16px;border-radius:999px;font-size:.88rem}
.step.active{background:var(--blue);border-color:var(--blue);color:#fff}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;margin-bottom:26px}
.card[hidden]{display:none}
.card h2{font-size:1.3rem;margin-bottom:8px}
.card h3{font-size:1rem;margin:18px 0 10px;color:var(--ink)}
.hint{color:var(--muted);font-size:.94rem;margin-bottom:16px}

.row{display:flex;gap:10px;flex-wrap:wrap}
.row input[type=url]{flex:1;min-width:260px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:1rem}
.row input[type=url]:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(29,78,216,.15)}

.btn{display:inline-block;border:0;border-radius:12px;padding:12px 22px;font-size:1rem;cursor:pointer;text-decoration:none;font-weight:600;transition:filter .15s}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:var(--blue-dark)}
.btn:disabled{opacity:.6;cursor:not-allowed}

.err{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;padding:10px 14px;margin-top:14px;font-size:.92rem}
.err[hidden]{display:none}

.crawl-info{display:grid;grid-template-columns:120px 1fr;gap:6px 14px;margin:14px 0}
.crawl-info dt{color:var(--muted);font-weight:600}
.crawl-info dd{overflow-wrap:anywhere}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:#f8fafc;color:var(--ink);border-radius:999px;padding:8px 14px;font-size:.9rem;cursor:pointer;transition:all .15s}
.chip:hover{border-color:var(--blue)}
.chip.selected{background:var(--blue);border-color:var(--blue);color:#fff}

.examples{margin-bottom:12px}
textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:1rem;font-family:var(--font);margin-bottom:16px;resize:vertical}
textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(29,78,216,.15)}

.progress{margin-top:18px;text-align:center}
.progress[hidden]{display:none}
.spinner{width:36px;height:36px;margin:0 auto 10px;border:4px solid var(--line);border-top-color:var(--blue);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.notice{background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:14px 16px;margin:16px 0}
.notice.success{background:#f0fdf4;border-color:#bbf7d0}
.notice p{margin-bottom:10px}
.price{font-size:1.15rem;margin:14px 0}
.checklist{margin:10px 0 14px 20px}
.checklist li{margin-bottom:6px}
code{background:#f1f5f9;padding:2px 6px;border-radius:6px;font-size:.9em}

.footer{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);font-size:.9rem;margin-top:30px}

@media(max-width:560px){
  .crawl-info{grid-template-columns:1fr}
  .topbar nav{display:none}
}