:root{--primary: #4F5BFF;--primary-soft: #EEF1FF;--primary-ink: #2A33C7;--mint: #10B981;--mint-soft: #E6F8F1;--ink: #0A0E27;--ink-2: #3A405C;--ink-3: #6A7088;--ink-4: #9AA0B6;--line: #E7E9F2;--line-2: #F0F2F8;--bg: #FFFFFF;--bg-2: #F7F8FC;--bg-3: #FAFBFF;--code-bg: #0E1130;--shadow-card: 0 1px 2px rgba(15,17,40,.04), 0 8px 24px -8px rgba(15,17,40,.08);--shadow-pop: 0 1px 2px rgba(15,17,40,.06), 0 20px 60px -20px rgba(15,17,40,.18);--radius: 18px;--radius-lg: 24px;--radius-sm: 12px;--maxw: 1200px;--font-sans: "Plus Jakarta Sans", "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink)}html{scroll-behavior:smooth}body{font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-size:16px;line-height:1.55}a{color:inherit;text-decoration:none}h1,h2,h3,h4,h5,h6,strong,p{margin:0}::selection{background:var(--primary-soft);color:var(--primary-ink)}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}.btn{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:999px;font-weight:600;font-size:14.5px;cursor:pointer;transition:transform .12s ease,background .15s,box-shadow .15s,border-color .15s,color .15s;border:1px solid transparent;white-space:nowrap;font-family:var(--font-sans);text-decoration:none}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px #4f5bff59}.btn-primary:hover{background:#3f4bf0;box-shadow:0 6px 20px #4f5bff6b}.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line)}.btn-ghost:hover{background:var(--bg-2);color:var(--ink)}.btn-lg{height:48px;padding:0 24px;font-size:15px}.kicker{display:inline-block;font-size:13px;color:var(--primary);font-weight:700;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px}.section-title{font-size:54px;line-height:1.05;letter-spacing:-.025em;font-weight:700;margin:0 0 20px;text-wrap:balance}.section-sub{font-size:19px;line-height:1.55;color:var(--ink-2);text-wrap:pretty}.section-head{max-width:760px;margin:0 auto 64px;text-align:center}.chip{font-size:11.5px;font-weight:600;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-family:var(--font-mono)}.traffic{display:flex;gap:6px}.traffic i{width:11px;height:11px;border-radius:50%;display:block}.traffic i:nth-child(1){background:#ff5f57}.traffic i:nth-child(2){background:#febc2e}.traffic i:nth-child(3){background:#28c840}