:root{--ink:#14213d;--muted:#5b6475;--line:#dde2ea;--bg:#f6f8fb;--accent:#1d4ed8;--ok:#15803d;--warn:#b45309;--bad:#b91c1c}
*{box-sizing:border-box}body{margin:0;font:16px/1.55 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:#fff}
a{color:var(--accent)}.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:5}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:58px}
.brand{font-weight:700;text-decoration:none;color:var(--ink)}.brand small{font-weight:400;color:var(--muted);margin-left:6px}
nav a{margin-left:14px;text-decoration:none;color:var(--muted);font-size:14px}.langs a{margin-left:6px;font-size:13px;text-decoration:none;color:var(--muted);padding:2px 6px;border:1px solid transparent;border-radius:4px}.langs a.active{border-color:var(--line);color:var(--ink);font-weight:600}
.hero{background:var(--bg);padding:56px 0 44px;border-bottom:1px solid var(--line)}.hero h1{font-size:32px;line-height:1.2;margin:0 0 14px;max-width:760px}.hero p{font-size:18px;color:#333;max-width:720px}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:11px 18px;border-radius:6px;font-weight:600;border:0;cursor:pointer;font-size:15px}.btn.sec{background:#fff;color:var(--accent);border:1px solid var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}
section{padding:40px 0;border-bottom:1px solid var(--line)}h2{font-size:24px;margin:0 0 14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:760px){.grid2,.grid3{grid-template-columns:1fr}.hero h1{font-size:25px}nav{display:none}}
.card{border:1px solid var(--line);border-radius:8px;padding:20px;background:#fff}.card h3{margin-top:0}.card.hl{border-color:var(--accent);box-shadow:0 1px 0 var(--accent)}
.price{font-size:36px;font-weight:700}.muted{color:var(--muted)}.small{font-size:13px}
.banner{padding:10px 14px;border-radius:6px;margin:14px 0;font-size:14px}.banner.demo{background:#fff7ed;border:1px solid #fdba74}.banner.info{background:#eff6ff;border:1px solid #bfdbfe}
footer{padding:28px 0;color:var(--muted);font-size:13px}
.q{border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin:10px 0}.q .id{font:12px ui-monospace,Menlo,monospace;color:var(--muted)}.q .tag{font-size:11px;background:#fee2e2;color:var(--bad);padding:1px 6px;border-radius:10px;margin-left:6px}
.q .opts{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}.q .opts label{border:1px solid var(--line);padding:5px 12px;border-radius:20px;cursor:pointer;font-size:14px}.q .opts input{margin-right:5px}
.q .opts label.sel-yes{background:#dcfce7;border-color:var(--ok)}.q .opts label.sel-partial{background:#fef3c7;border-color:var(--warn)}.q .opts label.sel-no{background:#fee2e2;border-color:var(--bad)}
.fnh{margin-top:26px;font-size:18px}.sticky{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 0;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.bar{height:12px;background:#e5e7eb;border-radius:6px;overflow:hidden;flex:1}.bar>i{display:block;height:100%}.barrow{display:flex;align-items:center;gap:10px;margin:6px 0}.barrow span{width:160px;font-size:14px}.barrow b{width:44px;text-align:right}
form label.f{display:block;margin:12px 0 4px;font-weight:600;font-size:14px}input[type=text],input[type=email],textarea{width:100%;padding:9px 10px;border:1px solid #c7ced9;border-radius:6px;font:inherit}textarea{min-height:70px}
.err{color:var(--bad);font-size:14px}table.plan{width:100%;border-collapse:collapse;font-size:14px}table.plan td,table.plan th{border-bottom:1px solid var(--line);padding:7px 6px;text-align:left;vertical-align:top}
.pill{font-size:11px;padding:1px 6px;border-radius:10px;background:#eef2ff;color:#3730a3;white-space:nowrap}