:root{--brand: #f5222d;--brand-2: #ff7a45;--ink: #1f2329;--ink-2: #4e5969;--ink-3: #86909c;--bg: #ffffff;--bg-soft: #f7f8fa;--border: #e5e6eb;--radius: 16px;--shadow: 0 8px 30px rgba(31, 35, 41, .08);--shadow-lg: 0 16px 48px rgba(31, 35, 41, .14)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:PingFang SC,Microsoft YaHei,Segoe UI,system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}.container{width:min(1120px,92%);margin:0 auto}.section{padding:88px 0}.section.soft{background:var(--bg-soft)}.section-head{text-align:center;margin-bottom:56px}.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.2em;color:var(--brand);background:#f5222d14;padding:6px 14px;border-radius:999px;margin-bottom:16px}.section-head h2{font-size:clamp(26px,4vw,38px);font-weight:700;letter-spacing:.01em}.section-head p{color:var(--ink-2);margin-top:12px;font-size:16px}.nav{position:sticky;top:0;z-index:100;background:#ffffffe0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700}.logo img{width:30px;height:30px}.logo .tag{font-size:11px;font-weight:500;color:var(--brand);border:1px solid currentColor;border-radius:6px;padding:1px 6px;margin-left:2px}.nav-links{display:flex;gap:32px;font-size:15px;color:var(--ink-2)}.nav-links a:hover{color:var(--brand)}.nav-cta{background:linear-gradient(135deg,var(--brand-2),var(--brand));color:#fff;font-size:14px;font-weight:600;padding:9px 22px;border-radius:999px;box-shadow:0 4px 14px #f5222d59;transition:transform .15s 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ease}.btn.primary{color:#fff;background:linear-gradient(135deg,var(--brand-2),var(--brand));box-shadow:0 8px 24px #f5222d59}.btn.ghost{color:var(--ink);border:1.5px solid var(--border);background:#fff}.btn:hover{transform:translateY(-2px)}.hero-stats{display:flex;gap:40px;margin-top:48px;flex-wrap:wrap}.stat .num{font-size:30px;font-weight:800;color:var(--brand)}.stat .num small{font-size:15px;font-weight:600;margin-left:2px}.stat .label{font-size:13px;color:var(--ink-3);margin-top:2px}.qr-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:28px;text-align:center}.qr-box{width:208px;height:208px;margin:0 auto;border-radius:12px;background:repeating-linear-gradient(45deg,#f2f3f5 0,#f2f3f5 12px,#e8eaee 12px,#e8eaee 24px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--ink-3);font-size:13px;border:1px dashed #c9cdd4}.qr-box svg{width:44px;height:44px;opacity:.55}.qr-card .tip{margin-top:16px;font-size:14px;color:var(--ink-2)}.qr-card .tip b{color:var(--ink)}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}.card .icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px;background:linear-gradient(135deg,#ff7a4524,#f5222d1a)}.card h3{font-size:18px;font-weight:700;margin-bottom:10px}.card p{font-size:14px;color:var(--ink-2)}.card 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var(--border);border-radius:12px;padding:20px 24px;margin-bottom:14px}.faq summary{cursor:pointer;font-size:16px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}.faq summary:after{content:"+";font-size:20px;color:var(--brand);font-weight:400}.faq details[open] summary:after{content:"−"}.faq details p{margin-top:12px;font-size:14px;color:var(--ink-2)}.cta-band{background:linear-gradient(120deg,#241f1f,#3a2b2c);color:#fff;border-radius:24px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}.cta-band:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(600px 260px at 80% 0%,rgba(255,122,69,.25),transparent 60%),radial-gradient(500px 240px at 10% 100%,rgba(245,34,45,.18),transparent 55%)}.cta-band>*{position:relative}.cta-band h2{font-size:clamp(24px,3.6vw,34px);font-weight:800}.cta-band p{margin-top:14px;color:#ffffffbf;font-size:16px}.footer{padding:56px 0 40px;background:#16181d;color:#ffffffa6;font-size:14px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}.footer .logo{color:#fff;margin-bottom:14px}.footer h4{color:#fff;font-size:15px;margin-bottom:14px}.footer li{list-style:none;margin-bottom:10px}.footer a:hover{color:#fff}.footer .copy{text-align:center;padding-top:26px;font-size:13px;color:#fff6}@media(max-width:960px){.hero-grid{grid-template-columns:1fr;gap:40px}.qr-card{max-width:320px;margin:0 auto}.grid-4{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:1fr;gap:40px}.timeline:before{display:none}.grid-3{grid-template-columns:1fr}.nav-links{display:none}.section{padding:64px 0}}@media(max-width:560px){.grid-4{grid-template-columns:1fr}.hero-stats{gap:24px}.cta-band{padding:48px 24px}}