:root{--sky:#22AEEA;--deep:#147FB8;--ink:#34465C;--muted:#5C6F82;--soft:#8797A9;--bg:#F3FBFF;--line:rgba(34,174,234,.12);--shadow:0 16px 38px rgba(31,133,184,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei",Arial,sans-serif;line-height:1.75;padding-top:118px}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 32px));margin:auto}.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}.logo img{max-height:52px;width:auto}.nav-core{display:flex;align-items:center;gap:22px;white-space:nowrap;flex-wrap:nowrap;margin-left:auto}.nav-core a{font-weight:600;position:relative}.nav-core a:hover,.nav-core a.active{color:var(--sky)}.nav-core a.active:after{content:"";position:absolute;left:50%;bottom:-10px;width:22px;height:3px;border-radius:99px;background:var(--sky);transform:translateX(-50%)}.main-btn{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#45C9F5 0%,#22AEEA 52%,#168ED4 100%);color:#fff;border-radius:999px;padding:11px 22px;font-weight:700;box-shadow:0 10px 24px rgba(34,174,234,.26)}.header-register{flex:0 0 auto}.channel-bar{background:#fff;border-top:1px solid rgba(34,174,234,.07);overflow-x:auto;white-space:nowrap}.channel-inner{display:flex;gap:4px;padding:7px 0}.channel-bar a{display:inline-flex;padding:7px 12px;border-radius:999px;color:var(--muted);font-size:14px}.channel-bar a:hover,.channel-bar a.active{color:var(--sky);background:rgba(34,174,234,.1)}.floating-service{position:fixed;right:18px;top:42%;z-index:50;display:flex;flex-direction:column;gap:8px}.floating-service a{background:#fff;border:1px solid var(--line);box-shadow:0 12px 30px rgba(31,133,184,.12);border-radius:999px;padding:9px 12px;font-size:14px}.floating-service .register-link{background:linear-gradient(135deg,#45C9F5,#22AEEA,#168ED4);color:#fff}.section{padding:66px 0}.section.alt{background:#F8FCFF}.section-title{color:var(--sky);font-size:32px;margin:0 0 12px}.section-kicker{display:inline-block;color:var(--deep);font-weight:700;letter-spacing:.08em;margin-bottom:8px}.lead{font-size:18px;color:var(--muted);max-width:820px}.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.panel,.card,.zone-card,.info-card,.review-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px}.panel{padding:30px}.card,.zone-card,.info-card,.review-card{padding:22px}.card h3,.panel h3{margin-top:0;color:var(--deep)}.feature-img{width:100%;max-height:280px;object-fit:contain;background:#F8FCFF;border-radius:20px;padding:10px}.product-card img{width:100%;height:150px;object-fit:contain;background:#F8FCFF;border-radius:14px;margin-bottom:14px}.news-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#DDF3FD;border-radius:18px;overflow:hidden}.news-item{background:#fff;padding:18px}.news-item strong{display:block;color:var(--sky);margin-bottom:5px}.banner-slider{max-width:1180px;margin:24px auto 34px;border-radius:24px;background:#F8FCFF;box-shadow:var(--shadow);overflow:hidden;position:relative;height:320px}.slides,.slide{height:100%}.slide{display:none}.slide.active{display:block}.banner-slider img{width:100%;height:100%;object-fit:contain;background:#F8FCFF}.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.92);color:var(--deep);font-size:25px;cursor:pointer}.prev{left:16px}.next{right:16px}.slider-dots{position:absolute;left:50%;bottom:13px;transform:translateX(-50%);display:flex;gap:8px}.slider-dot{width:10px;height:10px;border:0;border-radius:50%;background:rgba(255,255,255,.65);cursor:pointer}.slider-dot.active{background:var(--sky)}.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.matrix .product-card{background:#fff;border-bottom:3px solid #E2F4FD;border-radius:18px;padding:18px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:12px}.faq-list summary{cursor:pointer;font-weight:700;color:var(--deep)}.notice{border-left:4px solid var(--sky);background:#EAF8FE;border-radius:0 16px 16px 0;padding:20px}.site-footer{background:#163B57;color:#EAF7FE;padding:52px 0 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:28px}.footer-brand img{max-height:48px;width:auto;margin-bottom:15px}.site-footer h3{color:#fff}.site-footer a{display:block;margin:7px 0;color:#D9F2FD}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding:18px;color:#C8EAF7}.menu-toggle,.mobile-drawer,.drawer-mask,.mobile-bottom-nav{display:none}
@media(max-width:900px){body{padding-top:112px}.grid-2,.grid-3,.grid-4,.matrix,.news-strip,.footer-grid{grid-template-columns:1fr 1fr}.floating-service{display:none}.nav-core{display:none}.menu-toggle{display:flex;width:40px;height:40px;border:0;background:transparent;flex-direction:column;justify-content:center;gap:5px;padding:8px}.menu-toggle span{height:2px;background:var(--ink);width:23px}.header-inner{gap:12px}.logo{margin:auto}.logo img{max-height:44px}.header-register{padding:9px 16px}.mobile-drawer{display:block;position:fixed;left:0;top:0;bottom:0;width:84%;max-width:320px;background:#fff;z-index:130;transform:translateX(-105%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-mask{position:fixed;inset:0;background:rgba(22,59,87,.38);z-index:120}.drawer-mask.show{display:block}.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}.drawer-close{border:0;background:transparent;font-size:30px;color:var(--ink)}.mobile-drawer nav{padding:10px 16px 30px}.mobile-drawer nav a{display:block;padding:12px;border-bottom:1px solid #EDF7FC}.menu-open{overflow:hidden}.mobile-bottom-nav{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:90;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom-nav a{text-align:center;padding:10px 4px;color:var(--muted);font-size:14px}.mobile-bottom-nav a:hover{color:var(--sky)}body{padding-bottom:58px}.banner-slider{height:210px}.feature-img{max-height:230px}}
@media(max-width:640px){.container{width:min(100% - 22px,1180px)}.section{padding:44px 0}.section-title{font-size:26px}.grid-2,.grid-3,.grid-4,.matrix,.news-strip,.footer-grid{grid-template-columns:1fr}.banner-slider{height:180px;margin-top:14px;border-radius:16px}.slider-arrow{width:34px;height:34px}.product-card img{height:125px}.channel-inner{width:max-content;min-width:100%}.panel{padding:22px}.site-footer{padding-top:40px}}