:root{--c:#1f4fd8;--ink:#14171f;--mut:#5b6270;--bg:#fff;--soft:#f4f6fb;--line:#e3e6ee}
*{box-sizing:border-box}body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}a{color:var(--c)}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}.top{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:2}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:19px;color:var(--ink);text-decoration:none}nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:var(--mut);text-decoration:none;font-size:15px}nav a[aria-current]{color:var(--ink);font-weight:600}
.hero{background:linear-gradient(180deg,var(--soft),#fff);padding:64px 0 40px}.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.15;margin:0 0 16px;max-width:780px}.lead{font-size:19px;color:#2b3040;max-width:720px}
.btn{display:inline-block;background:var(--c);color:#fff;border:0;border-radius:10px;padding:12px 20px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;margin:6px 8px 6px 0}.btn.o{background:#fff;color:var(--c);border:1px solid var(--c)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin:24px auto 40px}.card{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:#fff}.card h3{margin:0 0 6px;font-size:18px}.card p{margin:0;color:#2b3040}
h2{font-size:24px;margin:36px 0 12px}.steps li{margin:8px 0}.note{background:var(--soft);border-radius:12px;padding:14px 16px;font-size:15px;color:#2b3040}.mut{color:var(--mut);font-size:15px}
.doc{max-width:820px;padding-top:32px;padding-bottom:40px}.doc h1{font-size:34px;margin:0 0 10px}pre{background:#0f1525;color:#e6ebff;border-radius:12px;padding:14px 16px;overflow-x:auto;font-size:14px;line-height:1.5}code{font-size:.92em;background:var(--soft);padding:1px 5px;border-radius:5px}pre code{background:none}
table{border-collapse:collapse;width:100%;margin:10px 0;font-size:15px;display:block;overflow-x:auto}td,th{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}th{font-size:13px;text-transform:uppercase;color:var(--mut)}
.f{display:block;margin:0 0 14px;font-weight:600;font-size:15px}.f small{color:var(--mut);font-weight:400}.f input,.f textarea{display:block;width:100%;margin-top:6px;font:inherit;font-weight:400;padding:10px 12px;border:1px solid #c9ccd6;border-radius:9px}.hp{position:absolute;left:-9999px}
.msg{border-radius:12px;padding:14px 16px;background:#e8f6ee;border:1px solid #9fd8b5}.msg.warn{background:#fff4e5;border-color:#f0c58a}
footer{border-top:1px solid var(--line);margin-top:40px;padding:24px 0;font-size:15px;color:#2b3040}footer p{margin:6px 0}