*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#111827;background:#f6f8fb;letter-spacing:0;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.site-header{width:min(1120px,92%);margin:18px auto 0;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 14px;background:rgba(255,255,255,.92);border:1px solid #e3e8ef;border-radius:8px;position:sticky;top:14px;z-index:20;box-shadow:0 14px 34px rgba(15,23,42,.08);backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;white-space:nowrap}
.brand img{width:36px;height:36px;border-radius:8px;display:block}
.site-header nav{display:flex;align-items:center;gap:26px;font-size:14px;color:#475569}
.header-download,.primary-btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:8px;background:#101827;color:#fff;font-weight:800;box-shadow:0 12px 26px rgba(16,24,39,.2)}
.header-download{min-height:40px;padding:0 18px;white-space:nowrap}
.hero{width:min(1120px,92%);margin:58px auto 78px;display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:56px;align-items:center}
.eyebrow,.section-head p,.scene-copy p{margin:0 0 14px;color:#008b8b;font-size:14px;font-weight:900}
h1,h2,h3,p{letter-spacing:0}
h1{margin:0;font-size:72px;line-height:1.04;color:#101827;max-width:720px}
.lead{margin:24px 0 0;max-width:620px;font-size:18px;line-height:1.8;color:#475569}
.cta-row{margin-top:34px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.primary-btn{min-height:58px;padding:0 30px;font-size:18px;background:#00a6a6;color:#001f24;box-shadow:0 16px 34px rgba(0,166,166,.24)}
.primary-btn span{font-size:20px;margin-right:8px;line-height:1}
.apk-note{font-size:14px;color:#64748b}
.app-visual{min-height:560px;display:grid;place-items:center;position:relative}
.app-visual:before{content:"";position:absolute;inset:20px 0;background:repeating-linear-gradient(90deg,rgba(0,166,166,.12) 0 1px,transparent 1px 64px),repeating-linear-gradient(0deg,rgba(255,122,89,.12) 0 1px,transparent 1px 64px);border-radius:8px}
.phone-shell{width:min(360px,100%);min-height:520px;position:relative;padding:26px;background:#fff;border:1px solid #dde5ef;border-radius:32px;box-shadow:0 26px 70px rgba(15,23,42,.16)}
.phone-top{display:flex;align-items:center;gap:14px;padding-bottom:24px;border-bottom:1px solid #edf1f6}
.phone-top img{width:50px;height:50px;border-radius:12px}
.phone-top strong{display:block;font-size:21px}
.phone-top span{display:block;margin-top:4px;color:#64748b;font-size:13px}
.speed-ring{width:190px;height:190px;margin:34px auto;display:grid;place-items:center;border-radius:50%;background:conic-gradient(#00a6a6 0 76%,#edf2f7 76% 100%);position:relative}
.speed-ring:before{content:"";position:absolute;inset:18px;border-radius:50%;background:#fff}
.speed-ring div{position:relative;text-align:center;display:grid;gap:6px}
.speed-ring span{font-size:42px;font-weight:950;color:#0f172a;line-height:1}
.speed-ring small{display:block;color:#64748b;font-weight:800;font-size:13px}
.route-list{display:grid;gap:12px}
.route-list div{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid #edf1f6}
.route-list b{width:38px;height:38px;display:grid;place-items:center;border-radius:8px;background:#fff3d0;color:#7a4a00}
.route-list span{font-weight:800;color:#334155}
.route-list em{font-style:normal;color:#008b8b;font-weight:900}
section{width:min(1120px,92%);margin:0 auto 82px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:24px}
.section-head h2,.scene-copy h2,.faq h2{margin:0;font-size:42px;line-height:1.16;color:#101827}
.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.benefit-grid article{padding:28px;background:#fff;border:1px solid #e1e8f0;border-radius:8px;box-shadow:0 18px 38px rgba(15,23,42,.07)}
.mark{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:8px;background:#101827;color:#fff;font-weight:950}
.benefit-grid h3{font-size:22px;margin:24px 0 10px}
.benefit-grid p,.faq p{margin:0;color:#64748b;line-height:1.75}
.scenes{display:grid;grid-template-columns:360px 1fr;gap:36px;align-items:start;padding:38px 0;border-top:1px solid #dde5ef;border-bottom:1px solid #dde5ef}
.scene-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.scene-list div{padding:22px;background:#fff;border:1px solid #e1e8f0;border-radius:8px}
.scene-list strong{display:block;font-size:20px;margin-bottom:8px}
.scene-list span{color:#64748b;line-height:1.6}
.faq{max-width:820px}
.faq h2{text-align:center;margin-bottom:24px}
.faq details{background:#fff;border:1px solid #e1e8f0;border-radius:8px;margin-bottom:12px;padding:20px 22px}
.faq summary{cursor:pointer;font-size:18px;font-weight:900}
.faq p{padding-top:12px}
footer{text-align:center;color:#64748b;padding:36px 16px 44px}
@media(max-width:920px){
  .site-header nav{display:none}
  .hero{grid-template-columns:1fr;gap:36px;margin-top:42px}
  h1{font-size:48px}
  .app-visual{min-height:430px}
  .phone-shell{min-height:450px}
  .benefit-grid,.scene-list,.scenes{grid-template-columns:1fr}
  .section-head{display:block}
}
@media(max-width:560px){
  .site-header{width:94%;gap:10px}
  .brand span{font-size:16px}
  .header-download{padding:0 12px;font-size:13px}
  h1{font-size:38px}
  .lead{font-size:16px}
  .primary-btn{width:100%}
  .app-visual:before{inset:30px 0}
  .phone-shell{width:100%;min-height:auto;border-radius:24px;padding:22px}
  .speed-ring{width:170px;height:170px;margin:28px auto}
  .route-list div{grid-template-columns:38px minmax(0,1fr) auto;gap:10px}
}