*{box-sizing:border-box}:root{--bg:#F4FBFF;--surface:#fff;--soft:#EAF7FF;--lighter:#F2FAFF;--primary:#1CA8F6;--bright:#38C7FF;--dark:#0877C9;--ink:#223044;--strong:#1D2A3A;--muted:#5F7082;--footer:#082A46;--line:rgba(28,168,246,.14);--shadow:0 16px 40px rgba(8,119,201,.08);--radius:22px;--header:76px;--channel:56px}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit}.container{width:min(1200px,calc(100% - 40px));margin:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:3000;padding:10px 16px;border-radius:10px;background:var(--dark);color:#fff}.skip-link:focus{top:14px}.site-header{position:fixed;inset:0 0 auto;z-index:1200;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(8,119,201,.08)}.desktop-header,.mobile-header{height:var(--header);display:flex;align-items:center;gap:24px}.desktop-header{justify-content:space-between}.mobile-header{display:none;justify-content:space-between}.brand-logo{display:inline-flex;align-items:center;flex:0 0 auto}.brand-logo img{width:auto;height:48px;object-fit:contain}.brand-logo--mobile img{height:42px}.main-nav{display:flex;align-items:center;justify-content:center;gap:8px}.main-nav a{position:relative;padding:10px 14px;border-radius:999px;color:var(--strong);font-size:15px;font-weight:700;white-space:nowrap}.main-nav a:hover,.main-nav a.is-active{background:var(--soft);color:var(--dark)}.main-nav a.is-active:after{content:"";position:absolute;left:50%;bottom:4px;width:18px;height:2px;border-radius:3px;background:var(--primary);transform:translateX(-50%)}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 24px;border:0;border-radius:999px;background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#fff;box-shadow:0 12px 26px rgba(8,119,201,.18);font-weight:800;white-space:nowrap;transition:.2s}.main-btn:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(8,119,201,.24)}.main-btn--header{min-width:88px}.channel-bar{border-top:1px solid rgba(28,168,246,.08);background:rgba(234,247,255,.88)}.channel-nav{display:flex;align-items:center;gap:9px;height:var(--channel);overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin}.channel-nav a{flex:0 0 auto;padding:7px 13px;border:1px solid transparent;border-radius:999px;color:var(--muted);font-size:13px;white-space:nowrap}.channel-nav a:hover,.channel-nav a.is-active{border-color:rgba(28,168,246,.25);background:#fff;color:var(--dark);box-shadow:0 8px 18px rgba(8,119,201,.08)}.site-main{padding-top:calc(var(--header) + var(--channel))}.section{padding:72px 0}.section--soft{background:linear-gradient(180deg,rgba(234,247,255,.6),rgba(244,251,255,.2))}.eyebrow{margin:0 0 10px;color:var(--primary);font-size:13px;font-weight:900;letter-spacing:.14em}h1,h2,h3,.section-title{margin-top:0;color:var(--dark);line-height:1.25}h1{margin-bottom:20px;font-size:clamp(34px,5vw,62px);letter-spacing:-.035em}h2{margin-bottom:16px;font-size:clamp(26px,3vw,38px)}h3{margin-bottom:10px;font-size:20px}p{margin-top:0}.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:800}.text-link:after{content:"→"}.text-link--light{color:#fff}.section-heading{max-width:760px;margin:0 auto 34px;text-align:center}.section-heading--left{margin-inline:0;text-align:left}.section-heading p:last-child{color:var(--muted)}.hero-actions{display:flex;align-items:center;gap:20px;margin-top:28px}.banner-wrap{padding:24px 0 0}.banner-slider{position:relative;z-index:1;max-width:1200px;margin:0 auto 34px;border-radius:22px;background:#fff;box-shadow:0 16px 40px rgba(8,119,201,.1);overflow:hidden;aspect-ratio:16/6.6}.banner-track,.banner-slide{width:100%;height:100%}.banner-slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .55s}.banner-slide.is-active{opacity:1;pointer-events:auto}.banner-slider img{width:100%;height:100%;object-fit:contain;background:#fff}.slider-arrow{position:absolute;z-index:3;top:50%;width:44px;height:44px;border:1px solid rgba(255,255,255,.7);border-radius:50%;background:rgba(8,42,70,.38);color:#fff;cursor:pointer;transform:translateY(-50%)}.slider-arrow--prev{left:18px}.slider-arrow--next{right:18px}.slider-dots{position:absolute;z-index:3;left:50%;bottom:16px;display:flex;gap:9px;transform:translateX(-50%)}.slider-dot{width:10px;height:10px;padding:0;border:2px solid rgba(255,255,255,.9);border-radius:50%;background:rgba(8,42,70,.28);cursor:pointer}.slider-dot.is-active{width:26px;border-radius:99px;background:#fff}.brand-intro{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:34px;align-items:center}.brand-intro__content,.brand-intro__media,.platform-strip,.board-card,.dual-card,.zone-card,.info-card,.review-card,.prose-card,.side-note,.guide-panel,.faq-list details,.compliance-card,.inner-hero__media{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:var(--radius);box-shadow:var(--shadow)}.brand-intro__content{padding:clamp(28px,5vw,54px)}.brand-intro__content p:not(.eyebrow){color:var(--muted);font-size:17px}.brand-intro__media,.inner-hero__media{min-height:320px;padding:22px;display:grid;place-items:center;background:linear-gradient(145deg,#fff,#eaf7ff)}.content-img,.zone-card img,.inner-hero__media img{width:100%;height:auto;max-height:360px;object-fit:contain}.quick-categories{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.quick-category{min-height:148px;padding:21px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.86);box-shadow:0 12px 30px rgba(8,119,201,.055)}.quick-category h3{margin-bottom:8px;font-size:18px}.quick-category p{min-height:48px;margin-bottom:10px;color:var(--muted);font-size:14px}.quick-category a{color:var(--primary);font-weight:800}.platform-strip{padding:28px 34px;background:linear-gradient(135deg,#fff,#edf8ff)}.platform-strip p{margin:0;color:var(--muted);font-size:17px}.board-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.board-card,.info-card{padding:26px}.board-card__number,.info-card__index,.side-note__number{display:inline-grid;place-items:center;min-width:40px;height:40px;margin-bottom:18px;border-radius:13px;background:var(--soft);color:var(--dark);font-weight:900}.board-card p,.info-card p,.dual-card p,.zone-card p,.prose-card p,.side-note p{color:var(--muted)}.dual-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.dual-card{overflow:hidden}.dual-card__media{min-height:240px;padding:24px;display:grid;place-items:center;background:linear-gradient(140deg,#f9fdff,#eaf7ff)}.dual-card__body{padding:30px}.point-list,.number-list{margin:20px 0;padding:0;list-style:none}.point-list li{position:relative;padding:8px 0 8px 26px}.point-list li:before{content:"";position:absolute;left:2px;top:17px;width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--bright),var(--dark));box-shadow:0 0 0 5px rgba(28,168,246,.09)}.zone-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.zone-card{padding:18px;overflow:hidden}.zone-card__media{min-height:190px;margin-bottom:22px;padding:12px;display:grid;place-items:center;border-radius:16px;background:var(--lighter)}.zone-card__body{padding:0 10px 12px}.horizontal-content{display:grid;grid-template-columns:.85fr .85fr 1.3fr;gap:20px}.news-wall,.safety-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.news-card,.safety-panel{padding:34px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}.safety-panel img{max-height:230px;margin:0 auto 20px;object-fit:contain}.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.review-card{padding:28px}.review-card__quote{margin-bottom:22px;font-size:16px}.review-card__meta{color:var(--dark);font-size:13px;font-weight:900}.faq-summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.faq-summary-grid details,.faq-list details{overflow:hidden}.faq-summary-grid summary,.faq-list summary{position:relative;padding:20px 52px 20px 22px;color:var(--dark);font-weight:800;cursor:pointer;list-style:none}.faq-summary-grid summary:after,.faq-list summary:after{content:"+";position:absolute;right:20px;top:50%;font-size:24px;transform:translateY(-50%)}.faq-summary-grid details[open] summary:after,.faq-list details[open] summary:after{content:"−"}.faq-summary-grid details p,.faq-list details p{padding:0 22px 22px;margin:0;color:var(--muted)}.about-summary{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}.about-summary__main,.about-summary__aside{padding:36px;border-radius:var(--radius);box-shadow:var(--shadow)}.about-summary__main{background:#fff}.about-summary__aside{background:linear-gradient(145deg,var(--dark),#0b90df);color:#fff}.about-summary__aside h2{color:#fff}.compliance-strip{padding:30px;border-radius:var(--radius);background:var(--footer);color:#eaf8ff}.compliance-strip h2{color:#fff}.inner-hero{padding:60px 0 34px;background:radial-gradient(circle at 10% 20%,rgba(127,228,255,.34),transparent 30%),radial-gradient(circle at 90% 0%,rgba(56,199,255,.18),transparent 28%)}.inner-hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:34px;align-items:center}.inner-hero__grid--text{grid-template-columns:1fr}.inner-hero__content{padding:30px 0}.hero-lead{max-width:720px;color:var(--muted);font-size:18px}.reading-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:24px;align-items:start}.prose-card,.side-note,.guide-panel{padding:clamp(28px,4vw,44px)}.side-note{position:sticky;top:calc(var(--header) + var(--channel) + 24px)}.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.split-guide{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.number-list{counter-reset:steps}.number-list li{position:relative;min-height:48px;padding:10px 0 10px 54px;counter-increment:steps}.number-list li:before{content:counter(steps);position:absolute;left:0;top:5px;display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--soft);color:var(--dark);font-weight:900}.review-card--featured{display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(145deg,#fff,#edf8ff)}.review-card--featured .review-card__quote{font-size:19px;line-height:1.9}.faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:36px;align-items:start}.faq-list{display:grid;gap:14px}.compliance-section{padding-top:24px}.compliance-card{display:grid;grid-template-columns:.85fr 1.3fr auto;gap:28px;align-items:center;padding:34px;background:linear-gradient(135deg,#082A46,#0a5687);color:#eaf8ff}.compliance-card h2{margin:0;color:#fff;font-size:25px}.compliance-card p{margin:0}.site-footer{margin-top:72px;padding:62px 0 22px;background:#082A46;color:#EAF8FF}.footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:34px}.footer-grid h2{color:#fff;font-size:17px}.footer-grid a:not(.brand-logo){display:block;width:max-content;margin:10px 0;color:#cceeff;font-size:14px}.footer-brand p{max-width:460px;margin-top:20px;color:#bfe6f8}.brand-logo--footer img{height:52px;padding:7px 12px;border-radius:12px;background:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:28px;margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);color:#b8dced;font-size:13px}.footer-bottom p{margin:0}.service-float{position:fixed;z-index:800;right:18px;top:50%;width:118px;padding:10px;display:grid;gap:6px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.95);box-shadow:0 20px 54px rgba(8,119,201,.13);transform:translateY(-50%)}.service-float a,.service-float button{min-height:40px;padding:8px 10px;border:0;border-radius:11px;background:transparent;color:var(--dark);text-align:center;font-size:13px;font-weight:800;cursor:pointer}.service-float .service-float__register{background:linear-gradient(135deg,#38C7FF,#0877C9);color:#fff}.menu-toggle,.drawer-close{border:0;background:transparent;cursor:pointer}.menu-toggle{width:42px;height:42px;padding:10px;display:grid;align-content:center;gap:5px}.menu-toggle span{display:block;width:22px;height:2px;border-radius:3px;background:var(--dark)}.drawer-overlay{position:fixed;z-index:1490;inset:0;visibility:hidden;background:rgba(8,42,70,.42);opacity:0;transition:.25s}.mobile-drawer{position:fixed;z-index:1500;inset:0 auto 0 0;width:min(84vw,320px);padding:18px;background:#fff;box-shadow:18px 0 50px rgba(8,42,70,.18);overflow-y:auto;transform:translateX(-105%);transition:.28s}.drawer-open .drawer-overlay{visibility:visible;opacity:1}.drawer-open .mobile-drawer{transform:translateX(0)}.drawer-head{position:sticky;top:-18px;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:12px 0 18px;background:#fff}.drawer-close{width:42px;height:42px;border-radius:50%;background:var(--soft);color:var(--dark);font-size:30px}.drawer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.drawer-nav a{padding:11px 12px;border-radius:12px;background:var(--lighter);font-size:14px}.drawer-nav a.is-active{background:var(--dark);color:#fff}.mobile-bottom-nav{display:none}@media(max-width:1120px){.service-float{display:none}.board-grid,.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:860px){:root{--header:68px;--channel:0px}.container{width:min(100% - 28px,720px)}.desktop-header,.channel-bar{display:none}.mobile-header{display:flex}.site-main{padding-top:var(--header)}.main-btn--mobile{min-width:72px;min-height:40px;padding:8px 17px}.section{padding:54px 0}.banner-slider{aspect-ratio:16/8.4}.brand-intro,.inner-hero__grid,.reading-layout,.split-guide,.faq-layout,.about-summary,.compliance-card{grid-template-columns:1fr}.quick-categories,.zone-grid,.horizontal-content,.review-grid,.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.side-note{position:static}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}}@media(max-width:620px){body{padding-bottom:76px}h1{font-size:36px}h2{font-size:27px}.section{padding:46px 0}.brand-logo--mobile img{height:36px}.banner-slider{border-radius:14px;aspect-ratio:16/9.2}.slider-arrow{width:38px;height:38px}.slider-arrow--prev{left:10px}.slider-arrow--next{right:10px}.hero-actions{align-items:flex-start;flex-direction:column;gap:14px}.quick-categories,.board-grid,.dual-grid,.zone-grid,.horizontal-content,.news-wall,.safety-grid,.review-grid,.faq-summary-grid,.feature-grid{grid-template-columns:1fr}.quick-category{min-height:0}.quick-category p{min-height:0}.brand-intro__content,.prose-card,.side-note,.guide-panel,.review-card,.news-card,.safety-panel,.about-summary__main,.about-summary__aside{padding:24px}.inner-hero__media,.brand-intro__media{min-height:210px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.mobile-bottom-nav{position:fixed;z-index:1100;inset:auto 0 0;display:grid;grid-template-columns:repeat(4,1fr);padding:8px 10px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:rgba(255,255,255,.96);backdrop-filter:blur(12px);box-shadow:0 -8px 24px rgba(8,119,201,.09)}.mobile-bottom-nav a{display:grid;place-items:center;min-height:48px;border-radius:13px;color:var(--muted);font-size:13px;font-weight:800}.mobile-bottom-nav a.is-active{background:var(--soft);color:var(--dark)}}
.brand-intro--text{grid-template-columns:1fr}.brand-intro--text .brand-intro__content{max-width:100%}