:root{
  --js-blue:#0a2e63;--js-blue-dark:#061a38;--js-blue-light:#e9f2ff;--js-cyan:#168ec4;
  --js-gold:#d6aa42;--js-orange:#f07b24;--js-green:#16875b;--js-red:#d74747;
  --js-bg:#f5f7fa;--js-text:#192431;--js-muted:#627080;--js-border:#dfe5ec;
  --js-white:#ffffff;--js-radius:8px;--js-maxw:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:78px}body{margin:0;background:var(--js-bg);color:var(--js-text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button{font:inherit}.container{width:min(calc(100% - 40px),var(--js-maxw));margin-inline:auto}
.skip-link{position:fixed;left:12px;top:-60px;z-index:1000;background:#fff;padding:10px 14px;border-radius:4px}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--js-border);backdrop-filter:blur(10px)}
.header-inner{min-height:72px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--js-blue-dark);white-space:nowrap}.brand img{width:42px}
.site-nav{display:flex;align-items:center;gap:17px;flex:1;justify-content:center}.site-nav a{font-size:14px;font-weight:650;color:#344455;white-space:nowrap;padding:25px 0 21px;border-bottom:3px solid transparent}.site-nav a:hover,.site-nav a.is-active{color:var(--js-blue);border-color:var(--js-gold)}
.header-cta,.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 17px;border-radius:6px;font-weight:750;border:1px solid transparent;cursor:pointer}.header-cta{background:var(--js-blue);color:#fff;font-size:13px;white-space:nowrap}.menu-toggle{display:none;background:none;border:0;color:var(--js-blue-dark)}
.hero{background:linear-gradient(128deg,var(--js-blue-dark),var(--js-blue) 64%,#0d467e);color:#fff;padding:56px 0 0;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 15% 20%,rgba(255,255,255,.16) 0 1px,transparent 2px);background-size:34px 34px;opacity:.22}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:42px;position:relative}.hero-copy{padding-bottom:50px}.hero-kicker,.section-kicker{letter-spacing:.14em;text-transform:uppercase;font-size:12px;font-weight:800;color:var(--js-gold);margin:0 0 10px}.hero h1{font-size:42px;line-height:1.24;margin:0 0 20px;max-width:700px}.hero-intro{font-size:17px;color:#dcecff;max-width:720px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 15px}.button-primary{background:var(--js-orange);color:#fff}.button-light{background:#fff;color:var(--js-blue-dark)}.button-outline{border-color:#91b7dc;color:#fff}.hero-note{font-size:13px;color:#bcd2ea}.hero-visual{padding-bottom:20px}
.info-strip{display:grid;grid-template-columns:repeat(8,1fr);background:#fff;color:var(--js-blue-dark);border-radius:8px 8px 0 0;position:relative}.info-strip span{text-align:center;padding:14px 6px;font-size:13px;font-weight:750;border-right:1px solid var(--js-border)}.info-strip span:last-child{border:0}
.section{padding:64px 0}.section-tint{background:#eef3f8}.section-dark{background:var(--js-blue-dark);color:#fff}.section-heading{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:end;margin-bottom:28px}.section-heading h2,.h5-layout h2,.faq-aside h2{font-size:30px;line-height:1.25;margin:0;color:var(--js-blue-dark)}.section-heading>p{margin:0;color:var(--js-muted)}.section-heading.light h2{color:#fff}.section-heading.light>p{color:#bfd0e2}
.media-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:center;background:#fff;border:1px solid var(--js-border);border-radius:var(--js-radius);padding:22px;margin-bottom:24px}.media-feature.reverse img{order:2}.media-feature h3{font-size:23px;margin:6px 0 10px}.media-feature p{color:var(--js-muted)}.eyebrow{display:inline-block;color:var(--js-blue);background:var(--js-blue-light);font-size:12px;font-weight:800;border-radius:3px;padding:4px 8px}.eyebrow.gold{background:#fbf3dd;color:#805e12}.check-list,.feature-list{padding-left:20px}.check-list li::marker,.feature-list li::marker{color:var(--js-gold)}
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.filter-button{border:1px solid var(--js-border);background:#fff;color:var(--js-blue);padding:8px 14px;border-radius:5px;cursor:pointer}.filter-button.is-active{background:var(--js-blue);color:#fff;border-color:var(--js-blue)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.content-card{background:#fff;border:1px solid var(--js-border);border-top:3px solid var(--js-blue);border-radius:var(--js-radius);padding:20px;display:flex;flex-direction:column}.content-card h3{font-size:18px;line-height:1.45;margin:12px 0 8px}.content-card p{font-size:14px;color:var(--js-muted);margin:7px 0}.content-card .meta{display:flex;gap:12px;flex-wrap:wrap;color:#7b8794;font-size:12px}.text-link{color:var(--js-blue);font-size:14px;font-weight:800;margin-top:auto;padding-top:12px}.js .filterable-card.is-hidden{display:none}
.stage-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:24px}.stage-rail{display:grid;gap:12px}.stage-rail article{display:grid;grid-template-columns:52px 1fr;gap:18px;background:#fff;border:1px solid var(--js-border);padding:18px}.stage-rail b{font-size:24px;color:var(--js-gold)}.stage-rail h3{margin:0 0 5px;font-size:17px}.stage-rail p{margin:0;color:var(--js-muted);font-size:14px}.rule-panel{background:var(--js-blue);color:#fff;padding:24px;border-radius:var(--js-radius);align-self:start;position:sticky;top:95px}.rule-panel h3{margin-top:0}.rule-panel ul{padding-left:19px}.rule-panel li{margin-bottom:11px}.source-note{font-size:12px;color:#bcd2ea;border-top:1px solid #456992;padding-top:12px}
.state-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.state-card{background:#0c315f;border:1px solid #244b75;padding:19px}.state-card>span{color:var(--js-gold);font-weight:800}.state-card h3{font-size:17px;margin:7px 0}.state-card p{font-size:14px;color:#c3d4e5}.state-card a{color:#fff;font-size:13px;font-weight:750}
.data-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:center;margin-bottom:22px}.table-wrap{overflow-x:auto}.table-wrap table{width:100%;border-collapse:collapse;background:#fff;min-width:600px}.table-wrap caption{text-align:left;background:#f9edcf;color:#654a0d;padding:10px;font-size:13px}.table-wrap th,.table-wrap td{padding:12px;border:1px solid var(--js-border);text-align:left;font-size:13px}.table-wrap th{background:var(--js-blue);color:#fff}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.metric{background:#fff;border:1px solid var(--js-border);padding:16px}.metric h3{font-size:16px;margin:0 0 5px;color:var(--js-blue)}.metric p{font-size:13px;color:var(--js-muted);margin:0}
.simulation-callout{margin-top:22px;border-left:4px solid var(--js-gold);background:#fff8e6;padding:18px}.simulation-callout p{margin:6px 0}.simulation-callout div{display:flex;gap:18px;flex-wrap:wrap}.simulation-callout a{color:var(--js-blue);font-weight:750}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.article-list article{background:#fff;border:1px solid var(--js-border);padding:19px;display:flex;flex-direction:column;justify-content:space-between}.article-list h3{font-size:18px;margin:8px 0}.article-list h3 a:hover{color:var(--js-blue)}.article-list p{color:var(--js-muted);font-size:14px}.article-list .meta{display:flex;gap:12px;font-size:12px;border-top:1px solid var(--js-border);padding-top:9px}
.article-shell{max-width:980px}.reading-section{background:#fff}.reading-section>.container>.section-heading{border-bottom:1px solid var(--js-border);padding-bottom:20px}.long-article{scroll-margin-top:90px;max-width:820px;margin:0 auto 42px;padding:36px 0;border-bottom:1px solid var(--js-border);font-size:16px;line-height:1.88}.long-article h3{font-size:28px;line-height:1.3;margin:10px 0}.long-article h4{font-size:19px;color:var(--js-blue-dark);margin:28px 0 6px}.long-article p{margin:10px 0}.article-lead{font-size:18px;color:#405268;border-left:3px solid var(--js-gold);padding-left:16px}.article-toc{display:flex;gap:12px;flex-wrap:wrap;background:var(--js-blue-light);padding:13px;margin:20px 0}.article-toc a{font-size:13px;color:var(--js-blue)}.analysis-box{background:#f7f9fc;border:1px solid var(--js-border);border-left:4px solid var(--js-cyan);padding:16px;margin:22px 0}.analysis-box p{margin:4px 0}.compact-article{padding:25px 0}.compact-article h3{font-size:23px}
.visual-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.visual-pair figure{margin:0;background:#f5f7fa;border:1px solid var(--js-border);padding:12px}.visual-pair figcaption{font-size:12px;color:var(--js-muted);padding-top:8px}
.download-grid{display:grid;grid-template-columns:1fr 1fr .75fr;gap:18px}.download-card,.qr-card{background:#fff;color:var(--js-text);padding:22px;border-top:3px solid var(--js-gold);border-radius:var(--js-radius)}.download-card img,.qr-card img{margin:0 auto 12px}.download-card h3,.qr-card h3{text-align:center}.download-card dl div{display:grid;grid-template-columns:90px 1fr;gap:10px;border-top:1px solid var(--js-border);padding:8px 0;font-size:13px}.download-card dt{font-weight:800}.download-card dd{margin:0;color:var(--js-muted)}.button-disabled{width:100%;background:#e5e9ef;color:#6b7580;cursor:not-allowed}.qr-card{text-align:center}.qr-card small{color:var(--js-muted)}
.h5-layout{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:60px}.h5-layout h2{font-size:34px}.section-intro{font-size:17px;color:var(--js-muted)}.safe-note{font-size:12px;color:var(--js-muted)}.h5-layout img{margin:auto}.h5-steps{background:#fff;border:1px solid var(--js-border);padding:20px}.h5-steps ol{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;padding-left:22px}.h5-steps li{font-size:13px;padding-right:10px}
.tab-buttons{display:flex;gap:8px;margin-bottom:16px}.tab-buttons button{border:1px solid var(--js-border);padding:9px 16px;background:#fff;color:var(--js-blue);cursor:pointer}.tab-buttons button[aria-selected="true"]{background:var(--js-blue);color:#fff}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.feature-grid div{background:#fff;border:1px solid var(--js-border);padding:16px;display:flex;gap:10px}.feature-grid b{color:var(--js-gold)}.js .tab-panel[hidden]{display:none}
.entry-visuals{display:grid;grid-template-columns:2fr 1fr;gap:16px;align-items:center;margin:0 0 20px}.entry-visuals img{max-height:230px;width:100%;object-fit:contain;background:#fff;border:1px solid var(--js-border);padding:10px}
.updates-list{border-top:1px solid var(--js-border)}.updates-list article{display:grid;grid-template-columns:120px 1fr 130px;gap:22px;padding:18px 0;border-bottom:1px solid var(--js-border);align-items:center}.version{display:flex;flex-direction:column}.version strong{font-size:18px;color:var(--js-blue)}.version span,.update-target{font-size:12px;color:var(--js-muted)}.updates-list h3{margin:5px 0;font-size:17px}.updates-list p{margin:0;color:var(--js-muted);font-size:14px}.update-target{text-align:right}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.guide-grid article{background:#fff;border:1px solid var(--js-border);padding:18px}.guide-grid b{color:var(--js-gold);font-size:19px}.guide-grid h3{font-size:17px;margin:4px 0}.guide-grid p{font-size:14px;color:var(--js-muted);margin:0}
.faq-layout{display:grid;grid-template-columns:.35fr .65fr;gap:40px}.faq-aside{position:sticky;top:100px;align-self:start}.faq-item{background:#fff;border-bottom:1px solid var(--js-border)}.faq-item summary{cursor:pointer;padding:16px 20px;font-weight:750;color:var(--js-blue-dark);list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";float:right;color:var(--js-gold)}.faq-item[open] summary:after{content:"−"}.faq-item div{padding:0 20px 15px;color:var(--js-muted)}
.about-section{background:#0b2546;color:#d7e4f1}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.about-grid h2{color:#fff;font-size:30px}.about-grid h3{color:#fff}.company-facts{background:#102f56;padding:18px}.company-facts div{display:grid;grid-template-columns:100px 1fr;padding:8px;border-bottom:1px solid #2d4d70}.company-facts dt{font-weight:800}.company-facts dd{margin:0}.principles{padding-left:20px}.privacy-panel{margin-top:26px;border-top:1px solid #345474;padding-top:22px}.privacy-panel h3{color:#fff}
.site-footer{background:#041327;color:#b9c9da;padding:42px 0 20px}.footer-intro{display:flex;align-items:center;gap:15px;border-bottom:1px solid #203752;padding-bottom:20px}.footer-intro p{max-width:800px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding:30px 0}.footer-grid h2{color:#fff;font-size:16px}.footer-grid a{display:block;font-size:13px;margin:7px 0}.footer-grid a:hover{color:#fff}.footer-bottom{border-top:1px solid #203752;padding-top:16px;display:flex;justify-content:space-between;gap:15px;font-size:12px}
.back-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border:0;border-radius:5px;background:var(--js-orange);color:#fff;font-weight:800;cursor:pointer;opacity:0;pointer-events:none;transition:.2s}.back-top.is-visible{opacity:1;pointer-events:auto}
@media(max-width:1080px){.site-nav{gap:10px}.site-nav a{font-size:12px}.header-cta{display:none}.state-grid,.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){
  html{scroll-padding-top:68px}.container{width:min(calc(100% - 28px),var(--js-maxw))}.site-header{position:sticky}.header-inner{min-height:64px;justify-content:space-between}.menu-toggle{display:flex;align-items:center;gap:4px;padding:10px}.menu-toggle span{width:20px;height:2px;background:var(--js-blue);display:none}.menu-toggle b{font-size:14px}.site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--js-border);padding:8px 14px 16px;max-height:calc(100vh - 64px);overflow:auto}.site-nav.is-open{display:grid;grid-template-columns:1fr 1fr}.site-nav a{padding:11px 8px;border-bottom:1px solid var(--js-border)}.hero{padding-top:38px}.hero-grid{grid-template-columns:1fr;gap:8px}.hero-copy{padding-bottom:16px}.hero h1{font-size:26px}.hero-intro{font-size:15px}.hero-visual{padding-bottom:12px}.info-strip{grid-template-columns:repeat(4,1fr)}.info-strip span{border-bottom:1px solid var(--js-border)}
  .section{padding:44px 0}.section-heading,.media-feature,.data-layout,.stage-layout,.h5-layout,.faq-layout,.about-grid,.visual-pair,.entry-visuals{grid-template-columns:1fr;gap:20px}.section-heading h2,.h5-layout h2,.faq-aside h2{font-size:25px}.media-feature.reverse img{order:0}.card-grid,.article-list,.download-grid,.guide-grid{grid-template-columns:1fr}.state-grid,.metric-grid,.feature-grid{grid-template-columns:1fr}.rule-panel,.faq-aside{position:static}.long-article{font-size:16px;padding:28px 0}.long-article h3{font-size:24px}.article-toc{display:grid;grid-template-columns:1fr 1fr}.h5-steps ol{grid-template-columns:1fr}.updates-list article{grid-template-columns:90px 1fr}.update-target{grid-column:2;text-align:left}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-intro{align-items:flex-start}.site-nav.is-open+.header-cta{display:none}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}