:root{
  --bg:#E6EBF2;
  --nav:#F5F7FB;
  --white:#FFFFFF;
  --soft:#EEF2F7;
  --soft2:#DDE4EE;
  --blue:#289CFF;
  --navText:#4E5F7A;
  --text:#243447;
  --muted:#66788A;
  --lightText:#8A9AAF;
  --card:rgba(255,255,255,0.92);
  --line:rgba(40,156,255,0.16);
  --shadow:0 14px 36px rgba(56,92,138,0.12);
  --footer:#243447;
  --footerText:#EAF3FF;
  --btn:linear-gradient(180deg,#32D1F6 0%,#27B9F4 35%,#249BFF 100%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;padding-top:82px;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
.site-header{position:fixed;top:0;left:0;right:0;z-index:9999;background:var(--nav);box-shadow:0 8px 24px rgba(56,92,138,.12);border-bottom:1px solid rgba(40,156,255,.12)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.logo{flex:0 0 auto;display:inline-flex;align-items:center}
.logo img{max-height:52px;width:auto;display:block}
.mobile-logo,.menu-toggle{display:none}
.nav-wrap{flex:1 1 auto;min-width:0;display:flex;justify-content:center}
.nav{display:flex;align-items:center;gap:22px;white-space:nowrap;flex-wrap:nowrap}
.nav a,.dropdown>a,.more-dropdown>a{color:var(--navText);font-weight:600;font-size:15px;padding:23px 0;display:inline-flex;align-items:center;gap:5px;position:relative}
.nav a:hover,.dropdown:hover>a,.more-dropdown:hover>a,.nav .active,.dropdown.active>a,.more-dropdown.active>a{color:var(--blue)}
.nav a.active:after,.dropdown.active>a:after,.more-dropdown.active>a:after{content:"";position:absolute;left:0;right:0;bottom:14px;height:3px;border-radius:4px;background:var(--blue)}
.header-action{flex:0 0 auto;display:flex;align-items:center}
.dropdown,.more-dropdown{position:relative}
.dropdown>a:after,.more-dropdown>a:after{content:"⌄";font-size:12px;margin-left:2px}
.dropdown-menu,.more-menu{position:absolute;top:100%;left:0;min-width:180px;background:var(--white);border:1px solid rgba(40,156,255,.12);border-radius:14px;box-shadow:0 18px 38px rgba(56,92,138,.16);z-index:10000;padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.18s ease;pointer-events:none}
.more-menu{left:auto;right:0;min-width:190px}
.dropdown:hover .dropdown-menu,.dropdown:focus-within .dropdown-menu,.more-dropdown:hover .more-menu,.more-dropdown:focus-within .more-menu{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.dropdown-menu a,.more-menu a{display:block;padding:10px 14px;color:var(--navText);white-space:nowrap;border-radius:10px;font-size:14px}
.dropdown-menu a:hover,.more-menu a:hover{color:var(--blue);background:rgba(40,156,255,.08)}
.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 24px;border-radius:999px;background:var(--btn);color:#FFFFFF;font-weight:700;box-shadow:0 10px 22px rgba(36,155,255,.24);border:0;transition:.2s ease;white-space:nowrap}
.main-btn:hover{transform:translateY(-1px);box-shadow:0 14px 28px rgba(36,155,255,.3);color:#FFFFFF}
.main-btn.small{min-height:40px;padding:0 22px}
.ghost-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:999px;color:var(--blue);font-weight:700;border:1px solid rgba(40,156,255,.25);background:#fff}
.page-main{max-width:1200px;margin:0 auto;padding:28px 22px 54px}
.hero-section,.sub-hero{max-width:1200px;margin:28px auto 36px;border-radius:22px;background:#FFFFFF;box-shadow:0 18px 40px rgba(56,92,138,.12);overflow:hidden;position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:24px;padding:44px}
.hero-text,.sub-hero-text{display:flex;flex-direction:column;justify-content:center}
.eyebrow{display:inline-flex;align-items:center;width:max-content;color:var(--blue);font-weight:700;border:1px solid rgba(40,156,255,.2);background:rgba(40,156,255,.08);border-radius:999px;padding:5px 12px;margin-bottom:14px}
h1,h2,h3,.section-title{color:var(--blue);margin:0 0 14px}
h1{font-size:42px;line-height:1.16;letter-spacing:-.5px}
h2{font-size:28px;line-height:1.25}
h3{font-size:20px;line-height:1.35}
p{margin:0 0 14px}.lead{font-size:18px;color:var(--muted);font-weight:600}.muted{color:var(--muted)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 22px}.hero-tags span{color:var(--blue);background:rgba(40,156,255,.09);border:1px solid rgba(40,156,255,.18);padding:7px 12px;border-radius:999px;font-weight:700;font-size:14px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.hero-visual,.sub-hero-img{background:linear-gradient(180deg,#F5F7FB 0%,#EEF2F7 100%);border-radius:20px;border:1px solid rgba(40,156,255,.14);display:flex;align-items:center;justify-content:center;padding:18px;min-height:260px}
.hero-visual img,.sub-hero-img img,.content-img,.zone-card img,.app-section img{max-width:100%;height:auto;object-fit:contain;border-radius:16px}
.section{margin:28px 0;padding:32px;border-radius:22px;background:rgba(255,255,255,.86);border:1px solid rgba(40,156,255,.14);box-shadow:var(--shadow)}
.section.soft{background:#EEF2F7}.section.alt{background:#F5F7FB}.section.compliance{background:#DDE4EE;border-color:rgba(40,156,255,.2)}
.section-heading{display:flex;align-items:center;gap:12px;margin-bottom:20px}.section-heading span{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;background:rgba(40,156,255,.1);color:var(--blue);font-weight:800}.section-heading h2{margin:0}.section-p{font-size:16px;color:var(--text);max-width:920px}
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card-grid.three{grid-template-columns:repeat(3,1fr)}.card-grid.five{grid-template-columns:repeat(5,1fr)}
.card,.zone-card,.info-card,.review-card{background:var(--card);border:1px solid var(--line);box-shadow:0 14px 36px rgba(56,92,138,.10);border-radius:18px;padding:22px}
.card p,.info-card p,.zone-card p{color:var(--muted)}.tag{display:inline-flex;color:var(--blue);font-weight:800;background:rgba(40,156,255,.08);border-radius:999px;padding:4px 10px;font-size:13px;margin-bottom:10px}.text-link{display:inline-flex;margin-top:8px;color:var(--blue);font-weight:800}.text-link:after{content:"→";margin-left:6px}
.feature-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:center}.feature-media{background:#fff;border:1px solid rgba(40,156,255,.14);border-radius:20px;padding:18px;box-shadow:0 12px 32px rgba(56,92,138,.10)}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px}.feature-list li,.check-list li{list-style:none;background:#fff;border:1px solid rgba(40,156,255,.13);border-radius:14px;padding:14px 16px;color:var(--text)}.feature-list,.check-list{padding:0;margin:18px 0 0}.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.step-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step{background:#fff;border:1px solid rgba(40,156,255,.14);border-radius:18px;padding:20px}.step strong{color:var(--blue);font-size:24px}.step p{color:var(--muted);margin-top:6px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review-card p{color:var(--text);margin:0}.faq-list{display:grid;gap:12px}details{background:#fff;border:1px solid rgba(40,156,255,.14);border-radius:16px;padding:16px 18px}summary{cursor:pointer;color:var(--text);font-weight:800}details p{color:var(--muted);margin:12px 0 0}.site-footer{background:var(--footer);color:var(--footerText);padding:44px 22px 24px}.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}.footer-brand p{color:#D8E8F8;margin-top:14px}.footer-links h3{color:#fff;font-size:18px}.footer-links a{display:block;color:#EAF3FF;margin:8px 0;opacity:.88}.footer-links a:hover{color:#7ed3ff}.footer-note{max-width:1200px;margin:28px auto 0;border-top:1px solid rgba(234,243,255,.18);padding-top:18px;color:#D8E8F8;font-size:14px}.drawer-overlay,.mobile-drawer{display:none}
@media (max-width:1180px){.nav{gap:15px}.nav a,.dropdown>a,.more-dropdown>a{font-size:14px}.header-inner{gap:16px}.card-grid.five{grid-template-columns:repeat(3,1fr)}}
@media (max-width:900px){body{padding-top:72px}.header-inner{min-height:64px;padding:0 14px;gap:10px}.desktop-logo,.nav-wrap{display:none}.mobile-logo{display:inline-flex;position:absolute;left:50%;transform:translateX(-50%)}.mobile-logo img{max-height:46px}.menu-toggle{display:inline-flex;flex-direction:column;gap:5px;justify-content:center;width:42px;height:42px;border:0;background:transparent;padding:8px}.menu-toggle span{height:2px;background:var(--navText);border-radius:4px;width:24px}.header-action{margin-left:auto}.main-btn.small{min-height:36px;padding:0 16px}.drawer-overlay{display:block;position:fixed;inset:0;background:rgba(36,52,71,.42);z-index:10000;opacity:0;visibility:hidden;transition:.2s ease}.mobile-drawer{display:block;position:fixed;top:0;left:0;height:100vh;width:84%;max-width:320px;background:#fff;z-index:10001;box-shadow:18px 0 44px rgba(36,52,71,.18);transform:translateX(-104%);transition:.25s ease;overflow-y:auto}.drawer-open{overflow:hidden}.drawer-open .drawer-overlay{opacity:1;visibility:visible}.drawer-open .mobile-drawer{transform:translateX(0)}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid rgba(40,156,255,.12);background:#F5F7FB}.drawer-head .logo img{max-height:48px}.drawer-close{border:0;background:#E6EBF2;color:var(--blue);font-size:30px;border-radius:12px;width:42px;height:42px;line-height:38px}.drawer-nav{display:grid;padding:14px}.drawer-nav a{padding:13px 14px;border-radius:12px;color:var(--navText);font-weight:700}.drawer-nav a:hover{background:rgba(40,156,255,.08);color:var(--blue)}.hero-section,.sub-hero{grid-template-columns:1fr;padding:26px;margin:20px auto 24px}.page-main{padding:20px 14px 40px}h1{font-size:30px}h2{font-size:23px}.section{padding:22px}.card-grid,.card-grid.three,.card-grid.five,.review-grid,.step-list,.footer-inner,.feature-split{grid-template-columns:1fr}.feature-list,.check-list{grid-template-columns:1fr}.hero-visual,.sub-hero-img{min-height:auto;padding:12px}.section-heading{align-items:flex-start}.footer-inner{gap:18px}}
@media (max-width:420px){.mobile-logo img{max-height:40px}.main-btn.small{padding:0 13px}.hero-tags span{font-size:12px}.section{padding:18px}.card,.zone-card,.info-card,.review-card{padding:18px}}