:root{--brand-1: #1f3b73;--brand-2: #2f6bab;--brand-3: #46a3c9;--brand-gradient: linear-gradient(135deg, #1f3b73 0%, #2f6bab 60%, #46a3c9 100%);--text-1: #303133;--text-2: #646a73;--border: #e4e7ed;--bg-page: #f5f7fa;--footer-bg: #16264a;--footer-text: #c6cfdd;--container: 1120px;--radius: 12px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;color:var(--text-1);background:#fff;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{max-width:var(--container);margin:0 auto;padding:0 24px}section{scroll-margin-top:84px}.site-header{position:sticky;top:0;z-index:100;background:#ffffffeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:18px;color:var(--text-1)}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background:var(--brand-gradient);color:#fff;font-size:15px;font-weight:600}.site-nav{display:flex;gap:28px}.site-nav a{font-size:15px;color:var(--text-2);transition:color .2s}.site-nav a:hover{color:var(--brand-2)}.hero{position:relative;overflow:hidden;background:radial-gradient(600px 320px at 12% -10%,rgba(70,163,201,.14),transparent 70%),radial-gradient(520px 300px at 88% 0%,rgba(47,107,171,.12),transparent 70%),#fff}.hero-inner{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:center;gap:48px;padding-top:72px;padding-bottom:88px}.hero-badge{display:inline-block;margin:0 0 20px;padding:5px 14px;border:1px solid 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var(--border);background:var(--bg-page)}.mock-bar i{width:10px;height:10px;border-radius:50%;background:#d5dbe4}.mock-bar i:first-child{background:#f3b8b8}.mock-bar i:nth-child(2){background:#f5d9a8}.mock-bar i:nth-child(3){background:#b9e3c4}.mock-url{margin-left:10px;padding:3px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);color:var(--text-2);font-size:12px}.mock-body{display:grid;grid-template-columns:56px 1fr}.mock-side{border-right:1px solid var(--border);padding:14px 0;display:flex;flex-direction:column;align-items:center;gap:12px}.mock-side i{width:26px;height:26px;border-radius:7px;background:#edf1f7}.mock-side i.on{background:var(--brand-gradient)}.mock-main{padding:18px}.mock-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}.mock-stat{border:1px solid var(--border);border-radius:10px;padding:12px 14px;background:#fff}.mock-stat span{display:block;font-size:12px;color:var(--text-2);margin-bottom:6px}.mock-stat 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12px;color:var(--brand-2);font-size:14px;letter-spacing:2px}.section-title{margin:0 0 14px;font-size:clamp(24px,3vw,32px);line-height:1.4;color:var(--text-1)}.section-sub{margin:0;font-size:16px;line-height:1.8;color:var(--text-2)}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px;transition:transform .2s,box-shadow .2s}.feature-card:hover{transform:translateY(-3px);box-shadow:0 14px 32px -16px #1f3b7338}.feature-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:11px;background:#eef4fb;color:var(--brand-2);margin-bottom:16px}.feature-icon svg{width:22px;height:22px}.feature-card h3{margin:0 0 8px;font-size:17px;color:var(--text-1)}.feature-card p{margin:0;font-size:14px;line-height:1.7;color:var(--text-2)}.flow-strip{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin:0 auto 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1fr;gap:40px;align-items:center;max-width:860px;margin:0 auto;padding:48px;background:#fff;border:1px solid var(--border);border-radius:16px}.about-mark{display:flex;align-items:center;justify-content:center;width:96px;height:96px;border-radius:24px;background:var(--brand-gradient);color:#fff;font-size:40px;font-weight:600;box-shadow:0 16px 32px -12px #1f3b7366}.about-card h2{margin:0 0 14px;font-size:24px;color:var(--text-1)}.about-card p{margin:0;font-size:15px;line-height:1.9;color:var(--text-2)}.site-footer{background:var(--footer-bg);padding:28px 0}.footer-inner{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 24px;font-size:13px;color:var(--footer-text)}.footer-inner p{margin:0}.footer-inner a{color:var(--footer-text);transition:color .2s}.footer-inner a:hover{color:#fff}@media(max-width:960px){.hero-inner{grid-template-columns:1fr;gap:40px;padding-top:48px;padding-bottom:56px}.hero-visual{max-width:560px}.feature-grid,.platform-grid{grid-template-columns:repeat(2,1fr)}.about-card{grid-template-columns:1fr;gap:24px;text-align:center;padding:36px 28px}}@media(max-width:620px){.site-nav{display:none}.section{padding:60px 0}.feature-grid,.platform-grid{grid-template-columns:1fr}.mock-stats{grid-template-columns:repeat(3,1fr);gap:8px}.mock-stat{padding:10px}}