:root{
  --bg:#E6EBF2;
  --soft:#F5F7FB;
  --white:#FFFFFF;
  --light:#EEF2F7;
  --line:#DDE4EE;
  --blue:#289CFF;
  --text:#243447;
  --muted:#66788A;
  --footer:#243447;
  --footerText:#EAF3FF;
  --shadow:0 14px 36px rgba(56,92,138,0.10);
  --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","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
p{margin:0;color:var(--muted)}
h1,h2,h3,.section-title{color:var(--blue);line-height:1.3;margin:0 0 14px}
h1{font-size:clamp(30px,4vw,50px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:20px}
.site-header{position:fixed;left:0;right:0;top:0;z-index:90;background:rgba(255,255,255,0.90);backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(56,92,138,0.10)}
.header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;padding:0 22px}
.logo img{max-height:52px;width:auto;display:block}
.nav-core{display:flex;justify-content:center;gap:24px;white-space:nowrap;flex-wrap:nowrap;align-items:center}
.nav-core a{color:#4E5F7A;position:relative;font-weight:700;padding:12px 10px;border-radius:12px;transition:.2s}
.nav-core a:hover,.nav-core a.active{color:var(--blue);background:rgba(40,156,255,0.08)}
.nav-core a.active::after{content:"";position:absolute;left:50%;bottom:-7px;width:28px;height:3px;border-radius:999px;background:var(--blue);transform:translateX(-50%)}
.header-register,.main-btn{background:var(--btn);color:#fff;border-radius:999px;padding:12px 24px;font-weight:800;box-shadow:0 12px 24px rgba(36,155,255,0.24);white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;border:none}
.ghost-link{color:var(--blue);font-weight:800;padding:10px 0}
.mobile-menu-btn{display:none;background:transparent;border:none;width:42px;height:42px;padding:9px;flex-direction:column;justify-content:center;gap:5px}
.mobile-menu-btn span{display:block;height:2px;border-radius:999px;background:var(--blue)}
.site-main{max-width:1200px;margin:0 auto;padding:104px 22px 58px}
.side-channel{position:fixed;top:110px;left:calc(50% - 760px);width:146px;z-index:50;background:rgba(255,255,255,0.92);border:1px solid rgba(40,156,255,0.14);border-radius:18px;box-shadow:var(--shadow);padding:10px;display:flex;flex-direction:column;gap:4px}
.side-channel a{color:var(--muted);border-radius:12px;padding:8px 10px;font-size:14px;font-weight:700}
.side-channel a:hover,.side-channel a.active{color:var(--blue);background:rgba(40,156,255,0.10)}
.floating-service{position:fixed;right:18px;top:42%;z-index:60;display:flex;flex-direction:column;gap:8px}
.floating-service a,.floating-service button{background:#fff;color:var(--blue);border:1px solid rgba(40,156,255,0.16);box-shadow:0 14px 30px rgba(56,92,138,0.12);border-radius:14px;min-width:58px;padding:10px 12px;text-align:center;font-weight:800;cursor:pointer;font:inherit}
.floating-service a.register-link{background:var(--btn);color:#fff}
.drawer-mask{position:fixed;inset:0;background:rgba(36,52,71,.48);z-index:9998;opacity:0;pointer-events:none;transition:.24s}
.mobile-drawer{position:fixed;left:0;top:0;bottom:0;width:84vw;max-width:320px;background:#fff;z-index:10000;transform:translateX(-105%);transition:.26s;box-shadow:20px 0 40px rgba(36,52,71,.18);display:flex;flex-direction:column;overflow-y:auto}
.drawer-open .mobile-drawer{transform:translateX(0)}
.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line)}
.drawer-head img{max-height:44px;width:auto}
.drawer-head button{width:38px;height:38px;border:none;border-radius:12px;background:var(--soft);color:var(--blue);font-size:24px;line-height:1;cursor:pointer}
.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:16px}
.drawer-nav a{background:var(--soft);padding:12px;border-radius:13px;color:var(--text);font-weight:700;text-align:center}
.drawer-nav a.active{background:rgba(40,156,255,.12);color:var(--blue)}
.mobile-bottom-nav{display:none}
.banner-slider{max-width:1200px;margin:28px auto 36px;border-radius:22px;background:#fff;box-shadow:0 18px 40px rgba(56,92,138,0.12);overflow:hidden;position:relative;z-index:1;height:360px}
.banner-slider .slide{display:none;width:100%;height:100%}
.banner-slider .slide.active{display:block}
.banner-slider img{width:100%;height:100%;object-fit:contain;background:#fff}
.banner-caption,.banner-text,.slide-title,.slide-desc,.slide-content,.slide-card,.banner-card{display:none!important}
.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;border:none;border-radius:999px;background:rgba(255,255,255,0.86);color:var(--blue);box-shadow:0 8px 20px rgba(56,92,138,0.16);width:44px;height:44px;font-size:28px;cursor:pointer}
.slider-arrow.prev{left:16px}.slider-arrow.next{right:16px}
.slider-dots{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.slider-dots button{width:9px;height:9px;border-radius:50%;border:none;background:rgba(40,156,255,0.24);padding:0;cursor:pointer}
.slider-dots button.active{background:var(--blue)}
.content-section,.white-section,.faq-section,.notice-box,.page-hero,.two-column-section,.image-text-section{margin:28px 0}
.white-section,.notice-box{background:rgba(255,255,255,.92);border:1px solid rgba(40,156,255,.16);box-shadow:var(--shadow);border-radius:24px;padding:30px}
.page-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.95fr);gap:28px;align-items:center;background:linear-gradient(135deg,#fff 0%,#F5F9FF 55%,#EEF7FF 100%);border:1px solid rgba(40,156,255,.14);border-radius:28px;padding:34px;box-shadow:var(--shadow)}
.page-hero-text .eyebrow,.eyebrow{display:inline-flex;color:var(--blue);font-weight:800;background:rgba(40,156,255,.10);border-radius:999px;padding:5px 13px;margin-bottom:14px}
.hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:22px}
.page-hero-media,.image-panel{background:#fff;border-radius:24px;box-shadow:inset 0 0 0 1px rgba(40,156,255,.12);padding:18px;display:flex;align-items:center;justify-content:center;min-height:240px}
.content-img,.zone-card img,.app-section img,.banner-slider img{max-width:100%;height:auto;object-fit:contain}
.page-hero-media img{max-height:300px;object-fit:contain}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:0 0 18px}
.section-head p{max-width:720px}
.card,.zone-card,.info-card,.review-card,.quick-card,.matrix-card{background:rgba(255,255,255,0.92);border:1px solid rgba(40,156,255,0.16);box-shadow:var(--shadow);border-radius:22px;padding:24px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.quick-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.quick-card{min-height:124px;display:flex;flex-direction:column;justify-content:space-between;padding:18px}
.quick-card p{font-size:14px}.quick-card a{color:var(--blue);font-weight:800;margin-top:10px}
.service-overview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.two-column-section{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.product-matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.matrix-card img,.zone-card img{height:170px;width:100%;object-fit:contain;background:#fff;border-radius:16px;margin-bottom:16px}
.electronic-feature{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center;background:rgba(255,255,255,.92);border:1px solid rgba(40,156,255,.16);box-shadow:var(--shadow);border-radius:24px;padding:26px}
.electronic-feature img{max-height:280px;margin:auto;object-fit:contain}
.zone-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.image-text-section{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.image-text-card{background:#fff;border:1px solid rgba(40,156,255,.16);box-shadow:var(--shadow);border-radius:24px;padding:22px;display:grid;grid-template-columns:180px 1fr;gap:18px;align-items:center}
.image-text-card img{height:180px;width:100%;object-fit:contain;border-radius:16px;background:var(--soft)}
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.review-card p{color:#4E5F7A}
.faq-section details{background:#fff;border:1px solid rgba(40,156,255,.15);border-radius:18px;box-shadow:0 8px 22px rgba(56,92,138,.07);padding:18px 20px;margin:12px 0}.faq-section summary{font-weight:800;color:var(--text);cursor:pointer}.faq-section p{margin-top:10px}
.site-footer{background:var(--footer);color:var(--footerText);padding:42px 22px 110px}.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.4fr .8fr .8fr 1.1fr;gap:26px}.footer-brand img{max-height:52px;width:auto;margin-bottom:14px}.site-footer p,.site-footer a{color:rgba(234,243,255,.82)}.site-footer h3{color:#fff;font-size:18px}.footer-links{display:flex;flex-direction:column;gap:8px}.footer-bottom{max-width:1200px;margin:28px auto 0;border-top:1px solid rgba(234,243,255,.16);padding-top:18px;color:rgba(234,243,255,.68);font-size:14px}
@media (max-width:1360px){.side-channel{display:none}.floating-service{right:10px}}
@media (max-width:980px){.nav-core{display:none}.mobile-menu-btn{display:flex}.header-inner{min-height:68px;display:grid;grid-template-columns:44px 1fr auto;gap:12px}.logo{justify-self:center}.logo img{max-height:44px}.header-register{padding:10px 16px}.site-main{padding-top:88px}.floating-service{display:none}.page-hero,.electronic-feature,.two-column-section,.image-text-section{grid-template-columns:1fr}.card-grid,.service-overview,.product-matrix,.zone-row,.review-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.banner-slider{height:280px}.image-text-card{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr 1fr}}
@media (max-width:640px){body{padding-bottom:76px}.site-main{padding-left:14px;padding-right:14px;padding-bottom:30px}.banner-slider{height:205px;margin:18px 0 28px;border-radius:18px}.slider-arrow{width:36px;height:36px;font-size:24px}.page-hero{padding:24px;border-radius:22px}.page-hero-media{min-height:180px}.card-grid,.service-overview,.product-matrix,.zone-row,.review-grid,.quick-grid{grid-template-columns:1fr}.white-section,.notice-box,.card,.zone-card,.info-card,.review-card,.quick-card,.matrix-card{border-radius:18px;padding:20px}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:12px;right:12px;bottom:10px;z-index:80;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 10px 28px rgba(36,52,71,.18);border:1px solid rgba(40,156,255,.14);border-radius:18px;overflow:hidden}.mobile-bottom-nav a{text-align:center;padding:11px 4px;font-weight:800;color:var(--muted);font-size:14px}.mobile-bottom-nav a.active{color:var(--blue);background:rgba(40,156,255,.08)}.footer-inner{grid-template-columns:1fr}.site-footer{padding-bottom:100px}.drawer-nav{grid-template-columns:1fr}.section-head{display:block}.page-hero-media img,.electronic-feature img{max-height:230px}}