*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#1f2937;line-height:1.7;background:#fff}
a{color:inherit;text-decoration:none}
.container{max-width:960px;margin:0 auto;padding:0 20px}
.topbar{background:#111827;color:#fff;padding:10px 0;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar a{opacity:.85}
.topbar a:hover{opacity:1}
.brand{font-weight:700;letter-spacing:1px}
.brand b{color:#f59e0b}
header.hero{background:linear-gradient(135deg,#111827 0%,#1f2937 100%);color:#fff;padding:64px 0 56px;text-align:center}
.hero .logo{font-size:48px;margin-bottom:12px}
.hero h1{font-size:34px;font-weight:800;letter-spacing:1px}
.hero p{font-size:17px;color:#d1d5db;margin-top:12px;max-width:640px;margin-left:auto;margin-right:auto}
.hero .tags{margin-top:18px}
.hero .tag{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:4px 14px;font-size:13px;margin:4px}
.btn{display:inline-block;background:#f59e0b;color:#111;font-weight:700;padding:12px 32px;border-radius:10px;margin-top:24px;font-size:16px}
.btn:hover{background:#fbbf24}
section{padding:48px 0}
section h2{font-size:24px;font-weight:800;margin-bottom:24px;text-align:center;letter-spacing:1px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.card{background:#f9fafb;border:1px solid #e5e7eb;border-radius:12px;padding:22px}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:#4b5563}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;text-align:center}
.step{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:22px}
.step .n{display:inline-block;width:32px;height:32px;line-height:32px;border-radius:50%;background:#f59e0b;color:#fff;font-weight:800;margin-bottom:10px}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:13px;color:#6b7280}
.faq{max-width:720px;margin:0 auto}
.faq details{background:#f9fafb;border:1px solid #e5e7eb;border-radius:10px;padding:14px 18px;margin-bottom:10px}
.faq summary{font-weight:600;cursor:pointer}
.faq p{font-size:14px;color:#4b5563;margin-top:8px}
footer{background:#111827;color:#9ca3af;padding:28px 0;font-size:13px;text-align:center}
footer a{color:#d1d5db}
footer .links{margin-bottom:8px}
footer .links a{margin:0 10px}
@media(max-width:600px){.hero h1{font-size:26px}.hero p{font-size:15px}}