@charset "UTF-8";
:root{--ink:#182c39;--muted:#61727c;--teal:#167f83;--deep:#123a4c;--pale:#edf4f5;--line:#d8e4e7;--coral:#e88369;--white:#fff;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f8fbfb;color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.75}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:4px}p{margin:.65em 0 1.15em}h1,h2,h3{line-height:1.25;letter-spacing:-.035em}h1{font-size:clamp(2.6rem,5.1vw,5.15rem);margin:.28em 0}h2{font-size:clamp(1.95rem,3.4vw,3.3rem);margin:.2em 0 .55em}h3{font-size:1.25rem;margin:.2em 0 .5em}.container{width:min(calc(100% - 48px),var(--max));margin:auto}.skip{position:absolute;left:-9999px;top:8px;padding:8px;background:white;z-index:20}.skip:focus{left:8px}.eyebrow{text-transform:uppercase;letter-spacing:.2em;color:var(--teal);font-size:.76rem;font-weight:800}.muted{color:var(--muted)}.small{font-size:.9rem}.topline{height:5px;background:linear-gradient(90deg,var(--deep),var(--teal) 72%,var(--coral))}.site-header{background:rgba(248,251,251,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.15rem;white-space:nowrap}.brand svg{width:38px;height:38px;flex:none}.brand small{display:block;font-size:.62rem;letter-spacing:.16em;color:var(--teal);font-weight:700;line-height:1}.nav{display:flex;gap:clamp(12px,2vw,28px);align-items:center}.nav a{font-size:.91rem;color:#49606a}.nav a:hover,.nav a[aria-current=page]{color:var(--teal)}.menu-button{display:none;background:none;border:1px solid var(--line);padding:8px 12px;border-radius:6px;color:var(--ink);font:inherit}.button{display:inline-flex;align-items:center;justify-content:center;gap:.7em;padding:13px 23px;border:1px solid var(--deep);border-radius:4px;background:var(--deep);color:white;font-weight:700;line-height:1.2;transition:transform .2s,background .2s}.button:hover{transform:translateY(-2px);background:var(--teal);border-color:var(--teal)}.button.alt{background:transparent;color:var(--deep)}.button.alt:hover{background:var(--pale)}.text-link{font-weight:750;color:var(--teal);border-bottom:1px solid currentColor;padding-bottom:2px}.hero{padding:66px 0 42px}.hero-head{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(210px,.5fr);gap:36px;align-items:end}.hero-copy{max-width:750px}.hero-copy p{font-size:1.08rem;max-width:650px}.hero-status{border-left:1px solid var(--line);padding-left:24px;display:grid;gap:10px;color:var(--muted);font-size:.85rem}.hero-status b{display:block;color:var(--ink);font-size:1.05rem}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.hero-media{display:grid;grid-template-columns:minmax(0,1fr) 188px;gap:0;margin-top:44px;background:var(--deep);border-radius:9px;overflow:hidden}.hero-media img{width:100%;height:auto;aspect-ratio:1672/941;object-fit:cover}.hero-index{display:grid;grid-template-rows:repeat(4,1fr);background:#e8f2f2}.hero-index a{display:flex;align-items:center;padding:14px;border-bottom:1px solid #cddedf;color:var(--deep);font-weight:800;font-size:.76rem;letter-spacing:.08em}.hero-index a:after{content:"↗";margin-left:auto;color:var(--teal)}.hero-index a:hover{background:white}.quick-rail{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line);margin-top:26px}.quick-rail a{padding:24px 18px 26px;border-right:1px solid var(--line);font-weight:700}.quick-rail a:first-child{padding-left:0}.quick-rail a:last-child{border:0}.quick-rail span{display:block;font-size:.72rem;letter-spacing:.15em;color:var(--teal);margin-bottom:12px}.quick-rail a:hover{color:var(--teal)}.section{padding:90px 0}.section.soft,.page-section.soft{background:var(--pale)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section-head p{max-width:470px;color:var(--muted)}.device-layer{border-top:1px solid var(--line);padding:24px 0 38px}.device-layer-head{display:flex;align-items:center;gap:30px;margin-bottom:18px}.device-layer-head strong{font-size:.78rem;letter-spacing:.22em;color:var(--teal);min-width:115px}.device-layer-head span{height:1px;background:var(--line);flex:1}.device-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.device-item{display:grid;grid-template-columns:134px 1fr;gap:22px;align-items:center;padding:16px;background:white;border:1px solid var(--line);border-radius:5px;min-width:0}.device-item img{width:134px;height:150px;object-fit:cover;border-radius:3px}.device-item.desktop img{height:110px}.device-item p{font-size:.91rem;color:var(--muted)}.device-item .text-link{font-size:.88rem}.device-code{font-size:.7rem;color:var(--teal);letter-spacing:.16em;font-weight:800}.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.step{padding:28px 20px 30px;border-right:1px solid var(--line)}.step:first-child{padding-left:0}.step:last-child{border:0}.step-num{font-size:2.1rem;color:var(--teal);font-weight:300;line-height:1}.step p{font-size:.9rem;color:var(--muted)}.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:7%;align-items:center}.feature-split.reverse .feature-copy{order:2}.feature-split.reverse .feature-image{order:1}.feature-image img{width:100%;border-radius:5px;max-height:420px;object-fit:cover}.feature-image.portrait{display:flex;justify-content:center}.feature-image.portrait img{width:min(100%,300px);max-height:none}.feature-copy p{color:var(--muted)}.feature-copy ul{padding-left:18px;color:var(--muted)}.feature-copy li{margin:5px 0}.switch-band{background:var(--deep);color:white;padding:72px 0}.switch-band p{color:#d0e1e7}.switch-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:55px;align-items:center}.switch-grid .button{border-color:#c7e5e6;background:#c7e5e6;color:var(--deep)}.switch-nodes{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.switch-nodes span{padding:24px 10px;text-align:center;border:1px solid #6e969e;font-size:.8rem;letter-spacing:.07em}.news-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}.news-item{padding:25px 20px 30px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}.news-item:nth-child(3n){border-right-color:transparent}.news-item img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:3px}.news-item .num{font-size:.72rem;color:var(--teal);letter-spacing:.12em;display:block;margin-top:18px}.news-item h3{font-size:1.1rem;line-height:1.45;min-height:3em}.news-item p{font-size:.89rem;color:var(--muted);min-height:5em}.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 50px}.faq-item{border-top:1px solid var(--line);padding:23px 0}.faq-item h3{font-size:1.05rem}.faq-item p{color:var(--muted);font-size:.93rem}.footer-cta{padding:74px 0;background:linear-gradient(115deg,#e4f1f2,#fafbfa 68%)}.footer-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.site-footer{background:#132d3a;color:#d0dee2;padding:48px 0 30px;font-size:.85rem}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px}.site-footer a:hover{color:white;text-decoration:underline}.footer-links{display:grid;gap:8px}.copyright{border-top:1px solid #395461;margin-top:30px;padding-top:22px;display:flex;flex-wrap:wrap;gap:15px 30px}.page-hero{padding:68px 0 40px;background:var(--pale);border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(2.25rem,4vw,4rem);max-width:920px}.page-hero p{max-width:760px;color:var(--muted);font-size:1.05rem}.breadcrumb{font-size:.78rem;color:var(--muted);margin-bottom:20px}.breadcrumb a{text-decoration:underline}.page-section{padding:65px 0}.page-section h2{font-size:clamp(1.65rem,2.7vw,2.5rem)}.prose{max-width:800px}.prose p,.prose li{color:#4c626c}.prose h2{margin-top:2em}.prose h3{margin-top:1.5em}.jump-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}.jump-nav a{padding:9px 16px;border:1px solid #b7d1d5;border-radius:3px;font-weight:700;font-size:.82rem;color:var(--deep)}.platform-detail{display:grid;grid-template-columns:190px 1fr;gap:35px;padding:38px 0;border-top:1px solid var(--line);scroll-margin-top:110px}.platform-detail img{width:190px;max-height:245px;object-fit:cover;border-radius:4px}.platform-detail.wide img{height:145px}.platform-detail h2{margin-top:0}.platform-detail dl{display:grid;grid-template-columns:130px 1fr;gap:9px 18px;font-size:.91rem}.platform-detail dt{font-weight:800;color:var(--deep)}.platform-detail dd{margin:0;color:var(--muted)}.resource-links{display:flex;flex-wrap:wrap;gap:8px 20px;padding:20px 0}.resource-links a{color:var(--teal);text-decoration:underline}.article-cover{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:4px;margin:25px 0 35px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:55px}.article-aside{border-left:1px solid var(--line);padding-left:25px;font-size:.88rem;align-self:start;position:sticky;top:110px}.article-aside a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}.article-nav{display:flex;justify-content:space-between;gap:18px;border-top:1px solid var(--line);padding-top:22px;margin-top:45px}.article-nav a{color:var(--teal);font-weight:700}.plain-list{padding-left:22px}.plain-list li{margin:12px 0}.callout{border-left:3px solid var(--coral);background:#f1f7f7;padding:17px 22px;margin:25px 0}.privacy-list h2{font-size:1.5rem}.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}
@media(max-width:900px){.nav{gap:12px}.nav a{font-size:.78rem}.hero-media{grid-template-columns:1fr 150px}.hero-media img{height:auto}.device-item{grid-template-columns:100px 1fr}.device-item img{width:100px;height:125px}.news-item h3{min-height:4.3em}.article-layout{grid-template-columns:1fr}.article-aside{position:static;border-left:0;border-top:1px solid var(--line);padding:20px 0}}
@media(max-width:700px){.container{width:min(calc(100% - 32px),var(--max))}.header-inner{min-height:68px}.menu-button{display:block}.nav{display:none;position:absolute;top:68px;left:0;right:0;background:#f8fbfb;border-bottom:1px solid var(--line);padding:15px 16px;flex-direction:column;align-items:stretch;gap:0}.nav.open{display:flex}.nav a{font-size:1rem;padding:10px}.hero{padding-top:42px}.hero-head{grid-template-columns:1fr}.hero-status{display:flex;border-left:0;border-top:1px solid var(--line);padding:14px 0 0;gap:15px;flex-wrap:wrap}.hero-status div{flex:1;min-width:90px}.hero-media{display:block;margin-top:30px}.hero-media img{height:auto;aspect-ratio:16/9;object-fit:cover}.hero-index{grid-template-columns:repeat(2,1fr);grid-template-rows:none}.hero-index a{padding:12px}.quick-rail{grid-template-columns:1fr 1fr}.quick-rail a{padding:15px!important;border-bottom:1px solid var(--line)}.quick-rail a:nth-child(2){border-right:0}.section{padding:60px 0}.section-head{display:block}.device-row,.feature-split,.switch-grid,.faq-grid,.footer-grid{grid-template-columns:1fr}.feature-split.reverse .feature-copy,.feature-split.reverse .feature-image{order:initial}.feature-image{margin-top:15px}.steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.step:nth-child(3){padding-left:0}.news-list{grid-template-columns:1fr 1fr}.news-item:nth-child(n){padding:20px 12px;border-right:1px solid var(--line)}.news-item:nth-child(odd){padding-left:12px}.news-item:nth-child(even){padding-right:12px;border-right-color:transparent}.news-item h3,.news-item p{min-height:0}.footer-cta-inner{display:block}.footer-cta .button{margin-top:10px}.platform-detail{grid-template-columns:1fr}.platform-detail img{width:min(260px,100%)}.platform-detail dl{grid-template-columns:105px 1fr}}
@media(max-width:460px){.hero-copy p{font-size:1rem}.hero-status{display:none}.device-item{grid-template-columns:86px 1fr;gap:12px}.device-item img{width:86px;height:115px}.steps{grid-template-columns:1fr}.step:nth-child(n){padding:18px 0;border-right:0;border-bottom:1px solid var(--line)}.news-list{grid-template-columns:1fr}.news-item:nth-child(n){padding:22px 0;border-right:0}.news-item img{width:100%}.switch-nodes{grid-template-columns:1fr 1fr}.switch-nodes span:last-child{grid-column:1/3}.article-nav{flex-direction:column}}