:root{--brand:#4f46e5;--brand-600:#4338ca;--brand-50:#eef2ff;--bg:#ffffff;--bg-soft:#f6f7f9;--panel:#ffffff;--line:#e6e8ec;--line-2:#eef0f3;--text:#1f2430;--muted:#6b7280;--muted-2:#9aa1ac;--green:#16a34a;--green-bg:#e7f6ec;--amber:#b45309;--amber-bg:#fdf1dd;--radius:14px;--shadow:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.06);--shadow-lg:0 10px 30px rgba(16,24,40,.08),0 2px 8px rgba(16,24,40,.05);--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body,html{margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--text);background:var(--bg);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.15}p{margin:0}img,svg{display:block;max-width:100%}.muted{color:var(--muted)}.icon{width:20px;height:20px;flex:none}.wrap{max-width:var(--max);margin:0 auto;padding:0 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var(--line);border-radius:var(--radius);padding:26px;transition:.16s}.feature:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#dcdfe5}.feature .fi{width:46px;height:46px;border-radius:12px;background:var(--brand-50);color:var(--brand);display:grid;place-items:center;margin-bottom:16px}.feature .fi .icon{width:23px;height:23px}.feature h3{font-size:17px}.feature p{margin-top:8px;color:var(--muted);font-size:14.5px}.steps{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:22px;gap:22px;counter-reset:step}.step{position:relative;padding-top:16px}.step .num{width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:14px;box-shadow:0 4px 14px rgba(79,70,229,.28)}.step .num,.step h3{font-size:16px}.step p{margin-top:7px;color:var(--muted);font-size:14px}.split{display:grid;grid-template-columns:1fr 1fr;grid-gap:56px;gap:56px;align-items:center}.split 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