*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#E6EBF2;color:#243447;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75}
a{color:#289CFF;text-decoration:none}
img{display:block;max-width:100%;height:auto}
.site-header{position:sticky;top:0;z-index:9999;background:#F5F7FB;backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(56,92,138,0.10)}
.desktop-header{max-width:1320px;margin:0 auto;display:flex;align-items:center;gap:20px;padding:14px 22px}
.brand-logo img{width:146px;height:auto}
.desktop-nav{display:flex;align-items:center;justify-content:center;gap:2px;flex:1;flex-wrap:wrap}
.nav a{color:#4E5F7A;font-weight:700;font-size:14px;padding:9px 9px;border-radius:999px;position:relative;white-space:nowrap}
.nav a.active,.nav a:hover{color:#289CFF;background:rgba(40,156,255,0.08)}
.nav a.active:after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;background:#289CFF;border-radius:10px}
.main-btn{display:inline-flex;align-items:center;justify-content:center;border:0;background:linear-gradient(180deg,#32D1F6 0%,#27B9F4 35%,#249BFF 100%);color:#FFFFFF!important;border-radius:999px;box-shadow:0 10px 24px rgba(36,155,255,0.25);font-weight:800;padding:10px 24px;line-height:1.2;transition:.2s ease}
.main-btn:hover{background:linear-gradient(180deg,#48D9F7 0%,#1E90F0 100%);transform:translateY(-1px)}
.header-btn{min-width:86px}
.mobile-header{display:none;height:64px;align-items:center;justify-content:space-between;padding:0 14px;background:#F5F7FB}
.menu-toggle{width:42px;height:42px;border:0;background:#FFFFFF;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;box-shadow:0 8px 18px rgba(56,92,138,0.10)}
.menu-toggle span{width:22px;height:2px;background:#4E5F7A;border-radius:4px}
.mobile-logo{position:absolute;left:50%;transform:translateX(-50%)}
.mobile-logo img{width:126px}
.mobile-register{padding:9px 17px;font-size:14px}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.38);opacity:0;visibility:hidden;transition:.25s ease;z-index:9998}
.mobile-drawer{position:fixed;top:0;bottom:0;left:0;width:84vw;max-width:320px;background:#FFFFFF;transform:translateX(-105%);transition:.28s ease;z-index:9999;box-shadow:20px 0 40px rgba(36,52,71,.18);overflow:auto}
.drawer-open{overflow:hidden}
.drawer-open .drawer-mask{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,.14)}
.drawer-logo img{width:128px}
.drawer-close{border:0;background:#EEF2F7;color:#4E5F7A;width:38px;height:38px;border-radius:50%;font-size:24px;line-height:38px}
.drawer-nav{display:flex;flex-direction:column;padding:14px}
.drawer-nav a{padding:13px 14px;border-radius:12px;color:#4E5F7A;font-weight:700;border-bottom:1px solid rgba(40,156,255,.08)}
.drawer-nav a.active,.drawer-nav a:hover{color:#289CFF;background:#EEF2F7}
.site-main{min-height:60vh}
.container{width:min(1200px,calc(100% - 32px));margin:0 auto}
.narrow{width:min(960px,calc(100% - 32px));margin:0 auto}
.banner-slider{max-width:1200px;margin:28px auto 36px;border-radius:20px;background:#FFFFFF;box-shadow:0 18px 40px rgba(56,92,138,0.12);overflow:hidden;position:relative;height:clamp(210px,43vw,520px)}
.slider-track{height:100%;position:relative}
.slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .45s ease;background:#FFFFFF}
.slide.active{opacity:1;pointer-events:auto}
.banner-slider img{width:100%;height:100%;object-fit:contain;background:#FFFFFF}
.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%);width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.88);color:#289CFF;font-size:30px;line-height:42px;box-shadow:0 8px 18px rgba(56,92,138,.16);cursor:pointer}
.slider-prev{left:18px}
.slider-next{right:18px}
.slider-dots{position:absolute;left:0;right:0;bottom:16px;display:flex;justify-content:center;gap:9px}
.slider-dots button{width:10px;height:10px;border-radius:50%;border:0;background:rgba(40,156,255,.28);cursor:pointer}
.slider-dots button.active{width:26px;border-radius:20px;background:#289CFF}
.hero-panel,.page-hero,.section,.split-section,.notice-strip{background:rgba(255,255,255,0.92);border:1px solid rgba(40,156,255,0.16);box-shadow:0 14px 36px rgba(56,92,138,0.10);border-radius:24px}
.hero-panel{padding:38px;margin-bottom:28px}
.page-hero{padding:46px 42px;margin:34px auto 28px}
.kicker{display:inline-flex;color:#289CFF;background:rgba(40,156,255,.10);font-weight:800;border-radius:999px;padding:6px 14px;font-size:14px;margin-bottom:12px}
h1,h2,h3,.section-title{color:#289CFF;line-height:1.28;margin-top:0}
h1{font-size:clamp(30px,5vw,50px);margin-bottom:18px}
h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px}
h3{font-size:20px;margin-bottom:10px}
p{margin:0 0 16px}
.lead{font-size:18px;color:#243447;max-width:860px}
.muted{color:#66788A}
.tiny{color:#8A9AAF;font-size:14px}
.section{padding:34px;margin:28px auto}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}
.section-head p{max-width:680px;color:#66788A}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card,.zone-card,.info-card,.review-card,.faq-item,.step-card{background:rgba(255,255,255,0.92);border:1px solid rgba(40,156,255,0.16);box-shadow:0 14px 36px rgba(56,92,138,0.10);border-radius:20px;padding:24px}
.card p,.zone-card p,.info-card p,.review-card p,.step-card p{color:#66788A}
.card-link{font-weight:800;color:#289CFF}
.tag{display:inline-flex;background:#EEF2F7;color:#289CFF;border-radius:999px;padding:5px 12px;font-size:13px;font-weight:800;margin-bottom:12px}
.num{width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:rgba(40,156,255,.12);color:#289CFF;font-weight:900;margin-bottom:12px}
.image-card{padding:0;overflow:hidden}
.image-card .image-box{background:#FFFFFF;padding:14px}
.content-img,.zone-card img,.app-section img,.banner-slider img{max-width:100%;height:auto}
.image-card img,.product-img{width:100%;height:230px;object-fit:contain;background:#FFFFFF}
.image-card .card-body{padding:22px}
.split-section{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center;padding:34px;margin:28px auto}
.split-section img{width:100%;max-height:360px;object-fit:contain;background:#FFFFFF;border-radius:18px}
.feature-list{display:grid;gap:12px;margin:18px 0 0;padding:0;list-style:none}
.feature-list li{background:#F5F7FB;border:1px solid rgba(40,156,255,.12);border-radius:14px;padding:12px 14px;color:#243447}
.review-card strong{display:block;color:#289CFF;margin-bottom:8px}
.faq-list{display:grid;gap:14px}
.faq-item h3{margin-bottom:8px}
.notice-strip{padding:24px;margin:28px auto;background:#DDE4EE}
.notice-strip strong{color:#289CFF}
.page-flow{display:grid;gap:28px;margin-bottom:40px}
.breadcrumb{color:#8A9AAF;font-size:14px;margin-bottom:10px}
.service-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.quote{border-left:4px solid #289CFF;padding-left:16px;color:#66788A}
.contact-box{background:#F5F7FB;border-radius:16px;padding:18px;border:1px solid rgba(40,156,255,.14)}
.site-footer{background:#243447;color:#EAF3FF;margin-top:54px}
.footer-inner{width:min(1200px,calc(100% - 32px));margin:0 auto;display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:28px;padding:42px 0}
.footer-logo img{width:142px;margin-bottom:14px}
.site-footer p,.site-footer a{color:#EAF3FF}
.site-footer h3{color:#EAF3FF;font-size:18px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-bottom{border-top:1px solid rgba(234,243,255,.14);width:min(1200px,calc(100% - 32px));margin:0 auto;padding:18px 0;display:flex;justify-content:space-between;gap:18px;color:#EAF3FF;font-size:14px}
@media (max-width:1080px){
  .desktop-header{display:none}
  .mobile-header{display:flex}
  .site-main{padding-top:0}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .container,.narrow{width:min(100% - 24px,1200px)}
  .banner-slider{margin:18px 12px 24px;border-radius:16px;height:clamp(180px,56vw,360px)}
  .slider-arrow{width:36px;height:36px;font-size:24px}
  .slider-prev{left:10px}.slider-next{right:10px}
  .hero-panel,.page-hero,.section,.split-section,.notice-strip{padding:24px;border-radius:18px}
  .grid-2,.grid-3,.grid-4,.service-points{grid-template-columns:1fr}
  .split-section{grid-template-columns:1fr}
  .section-head{display:block}
  .image-card img,.product-img{height:200px}
  .footer-inner{grid-template-columns:1fr;padding:32px 0}
  .footer-bottom{flex-direction:column}
}