:root{--bg:#f7f7f4;--ink:#1f2523;--muted:#66706c;--line:#d8ddd8;--panel:#fff;--accent:#168657;--accent-dark:#0f5f3f;--gold:#b68a35;--danger:#a23a32}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);margin:0;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}button,input{font:inherit}a{color:inherit}.page{min-height:100vh}.topbar{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:10;background:#ffffffc2;justify-content:space-between;align-items:center;gap:24px;padding:22px clamp(18px,5vw,64px);display:flex;position:sticky;top:0}.brand{align-items:center;gap:12px;font-size:18px;font-weight:800;display:flex}.brand-mark{background:var(--ink);color:#fff;border-radius:8px;place-items:center;width:34px;height:34px;font-size:16px;display:grid}.nav{color:var(--muted);gap:18px;font-size:14px;display:flex}.nav a{text-decoration:none}.hero{grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);align-items:start;gap:clamp(28px,5vw,64px);padding:clamp(44px,7vw,88px) clamp(18px,5vw,64px) 40px;display:grid}.eyebrow{color:var(--accent-dark);margin:0 0 14px;font-weight:800}h1{max-width:760px;margin:0 0 22px;font-size:clamp(38px,6vw,76px);line-height:1}.lead{color:#34403b;max-width:720px;margin:0 0 28px;font-size:19px;line-height:1.75}.status-row{flex-wrap:wrap;gap:10px;margin:28px 0 0;display:flex}.pill{border:1px solid var(--line);color:#33413b;background:#fff;border-radius:8px;padding:10px 12px;font-size:14px}.checkout-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:20px;box-shadow:0 20px 60px #1f252314}.panel-header{justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;display:flex}.panel-header h2{margin:0;font-size:24px}.secure{color:var(--accent-dark);align-items:center;gap:6px;font-size:13px;font-weight:700;display:inline-flex}.plans{gap:12px;margin:18px 0;display:grid}.plan{text-align:left;border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:8px;gap:8px;width:100%;padding:16px;display:grid}.plan.active{border-color:var(--accent);box-shadow:0 0 0 2px #1686571f}.plan-title{justify-content:space-between;align-items:center;gap:14px;font-weight:800;display:flex}.price{font-size:28px;font-weight:900}.plan small{color:var(--muted);line-height:1.5}.form{gap:12px;margin-top:18px;display:grid}label{color:#3b4541;gap:7px;font-size:14px;font-weight:700;display:grid}input{border:1px solid var(--line);min-height:46px;color:var(--ink);background:#fff;border-radius:8px;padding:10px 12px}input[type=checkbox]{width:18px;height:18px;min-height:auto;accent-color:var(--accent)}.agreement-box{border:1px solid var(--line);background:#fbfcfb;border-radius:8px;gap:12px;padding:14px;display:grid}.agreement-title{color:#2f3935;align-items:center;gap:8px;font-size:14px;font-weight:900;display:flex}.agreement-link{min-height:42px;color:var(--accent-dark);background:#eef7f2;border:1px solid #bdd9cb;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:0 12px;font-weight:900;text-decoration:none;display:inline-flex}.checkbox-label{grid-template-columns:18px 1fr;align-items:start;gap:10px;font-weight:700;line-height:1.5;display:grid}.primary{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:8px;justify-content:center;align-items:center;gap:10px;min-height:50px;font-weight:900;display:inline-flex}.primary:disabled{opacity:.55;cursor:not-allowed}.secondary{border:1px solid var(--line);min-height:46px;color:var(--ink);background:#fff;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:0 14px;font-weight:800;text-decoration:none;display:inline-flex}.note{color:var(--muted);margin:10px 0 0;font-size:13px;line-height:1.6}.message{color:var(--accent-dark);background:#f1f7f4;border:1px solid #c9e4d6;border-radius:8px;padding:12px;font-size:14px;line-height:1.5}.message.error{color:var(--danger);background:#fff4f2;border-color:#ecc7c1}.section{border-top:1px solid var(--line);padding:46px clamp(18px,5vw,64px)}.section h2{margin:0 0 18px;font-size:32px}.steps{grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;display:grid}.step{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:150px;padding:18px}.step-num{width:32px;height:32px;color:var(--accent-dark);background:#eef5f1;border-radius:8px;place-items:center;margin-bottom:14px;font-weight:900;display:grid}.step h3{margin:0 0 8px;font-size:18px}.step p{color:var(--muted);margin:0;font-size:14px;line-height:1.65}.success{max-width:760px;margin:0 auto;padding:72px 18px}.success-box{border:1px solid var(--line);background:#fff;border-radius:8px;padding:28px}@media (max-width:860px){.topbar{flex-direction:column;align-items:flex-start}.hero,.steps{grid-template-columns:1fr}h1{font-size:42px}}