:root{--teal-900:#005c61;--teal-800:#007f80;--teal-700:#0b9a97;--teal-100:#e7f7f4;--teal-050:#f5fbfa;--ink:#123d40;--muted:#5f7778;--yellow:#f5c84c;--line:#d7ecea;--paper:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}button,input{font:inherit}img{max-width:100%}:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}.container{width:min(1200px,calc(100% - 48px));margin:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:16px;top:10px;z-index:50;padding:9px 14px;border-radius:999px;color:var(--teal-900);background:var(--yellow);transform:translateY(-150%);font-weight:700}.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:20;height:72px;display:flex;align-items:center;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(0,105,105,.08)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:inline-flex;flex:0 0 auto;align-items:center}.brand img{display:block;width:99px}.main-nav{display:flex;align-items:center;gap:clamp(14px,2vw,27px);color:#234f50;font-size:14px;white-space:nowrap}.main-nav a,.nav-product-home{position:relative;display:inline-flex;align-items:center;gap:7px;padding:24px 0 22px;border:0;background:transparent;color:#234f50;font:inherit;cursor:pointer}.main-nav a::after,.nav-product-home::after{position:absolute;left:0;right:100%;bottom:15px;height:2px;background:var(--teal-700);content:"";transition:right .25s ease}.main-nav a:hover::after,.main-nav a.active::after,.nav-product-home:hover::after,.nav-product-home[aria-expanded="true"]::after{right:0}.main-nav a.active{color:var(--teal-800);font-weight:700}.chevron{display:inline-block;width:7px;height:7px;border-right:1.5px solid;border-bottom:1.5px solid;transform:rotate(45deg) translateY(-2px)}.header-actions{display:flex}.menu-toggle{display:none;width:40px;height:40px;padding:0;border:0;border-radius:50%;background:transparent;color:var(--teal-900);place-items:center;cursor:pointer}.menu-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}.product-menu-home{position:absolute;inset:72px 0 auto;z-index:25;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:0 16px 34px rgba(0,80,80,.12);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .25s ease,transform .25s ease,visibility .25s}.product-menu-home.open{opacity:1;visibility:visible;transform:translateY(0)}.product-menu-home-inner{width:min(1200px,calc(100% - 48px));margin:auto;padding:28px 0 30px;display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:42px}.product-menu-home h2{margin:0 0 9px;color:var(--teal-900);font-size:26px}.product-menu-home h3{margin:1px 0 10px;color:var(--teal-900);font-size:16px}.product-menu-home p{margin:0;color:var(--muted);font-size:13px}.product-menu-home a{display:block;width:fit-content;margin:7px 0;color:#2b6869;font-size:14px}
.page-hero{padding:64px 0 58px;background:var(--teal-050)}.page-hero h1{margin:0;color:var(--teal-900);font-size:clamp(40px,5vw,60px);line-height:1.16;letter-spacing:-.035em}.news-section{padding:66px 0 100px}.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.news-card{display:block;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:#fff;transition:transform .2s ease,box-shadow .2s ease}.news-card:hover,.news-card:focus-visible{transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,88,90,.1)}.news-card img{display:block;width:100%;aspect-ratio:16/10;object-fit:cover}.news-card-body{padding:24px 26px 28px}.news-card h2{margin:0 0 15px;color:var(--teal-900);font-size:clamp(22px,2.2vw,29px);line-height:1.35}.read-more{display:inline-flex;align-items:center;gap:5px;color:var(--teal-800);font-size:14px;font-weight:700}.read-more svg{width:16px;fill:none;stroke:currentColor;stroke-width:1.8;transition:transform .2s ease}.news-card:hover .read-more svg,.news-card:focus-visible .read-more svg{transform:translateX(3px)}.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 25px;color:var(--muted);font-size:14px}.breadcrumb a{color:var(--teal-800)}.article-shell{width:min(840px,calc(100% - 48px));margin:0 auto;padding:48px 0 94px}.article-shell h1{margin:0 0 32px;color:var(--teal-900);font-size:clamp(32px,4.2vw,48px);line-height:1.3}.article-copy{font-size:19px;line-height:2;color:var(--ink)}.article-copy p{margin:0 0 22px}.article-video{display:block;width:100%;aspect-ratio:16/9;max-height:560px;margin:38px 0 12px;border-radius:14px;background:#0b3033}.video-fallback,.accessibility-note{color:var(--muted);font-size:14px}.video-fallback a,.back-link{color:var(--teal-800);text-decoration:underline;text-underline-offset:3px}.back-link{display:inline-block;margin-top:35px;font-weight:700}
.site-footer{padding:58px 0 24px;color:rgba(236,255,253,.76);background:#00575d}.footer-main{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:42px;padding-bottom:38px}.footer-brand .brand img{filter:brightness(0) invert(1)}.footer-brand p{max-width:310px;margin:18px 0;font-size:14px}.subscribe{display:flex;max-width:360px;margin-top:18px}.subscribe input{min-width:0;flex:1;padding:11px 13px;border:1px solid rgba(255,255,255,.28);border-radius:9px 0 0 9px;color:var(--ink);background:#fff}.subscribe button{padding:11px 16px;border:1px solid var(--yellow);border-radius:0 9px 9px 0;color:#17484a;background:var(--yellow);font-weight:700}.footer-col{display:flex;flex-direction:column;gap:9px}.footer-col h3{margin:0 0 7px;color:#f3fffd;font-size:15px}.footer-col a{width:fit-content;font-size:13px}.footer-bottom{display:flex;justify-content:space-between;gap:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);font-size:12px}.legal-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:14px}
@media(max-width:1024px){.nav-wrap{width:min(920px,calc(100% - 36px))}.main-nav{gap:16px;font-size:13px}}@media(max-width:767px){.container,.article-shell{width:calc(100% - 32px)}.site-header{height:64px}.brand img{width:92px}.main-nav{position:absolute;top:64px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 16px;background:var(--paper);border-bottom:1px solid var(--line)}.main-nav.open{display:flex}.main-nav a,.nav-product-home{width:100%;padding:13px 4px;border-bottom:1px solid var(--line)}.main-nav a::after,.nav-product-home::after{bottom:0}.menu-toggle{display:grid}.product-menu-home{position:static;display:none;opacity:1;visibility:visible;transform:none;box-shadow:none}.product-menu-home.open{display:block}.product-menu-home-inner{width:calc(100% - 32px);display:block;padding:18px 0 20px}.product-menu-home-inner>div{margin-top:16px}.page-hero{padding:48px 0}.news-section{padding:42px 0 68px}.news-grid{grid-template-columns:1fr;gap:20px}.news-card-body{padding:20px}.article-shell{padding:30px 0 66px}.article-copy{font-size:17px}.footer-main{grid-template-columns:1fr 1fr;gap:28px 22px}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:12px}.legal-links{justify-content:flex-start}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.news-card,.main-nav a::after,.product-menu-home{transition:none}}
.news-card img{aspect-ratio:3/4;object-fit:contain}
.main-nav .product-menu-home a{display:block;width:fit-content;margin:7px 0;padding:0;border-bottom:0;text-align:left}.main-nav .product-menu-home a::after{display:none}
@media(max-width:767px){.main-nav{position:absolute;inset:64px 0 auto;height:calc(100vh - 64px);height:calc(100svh - 64px);max-height:none;overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:8px 16px calc(18px + env(safe-area-inset-bottom))}.main-nav>*{flex:0 0 auto}.main-nav .product-menu-home a{width:100%;margin:0;padding:10px 4px;border-bottom:1px solid var(--line)}}
.main-nav{scrollbar-width:thin;scrollbar-color:#72aaa7 transparent}.main-nav::-webkit-scrollbar{width:8px}.main-nav::-webkit-scrollbar-track{background:rgba(215,236,234,.42)}.main-nav::-webkit-scrollbar-thumb{border:2px solid transparent;border-radius:8px;background:#72aaa7;background-clip:padding-box}