:root{--paper:#f7f6f2;--white:#fffefa;--ink:#303f45;--muted:#65767c;--blue:#587888;--line:#dce2df;--tint:#e8eeed;--radius:22px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0}a{color:inherit;text-decoration:none}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px;border-radius:5px}a,summary{touch-action:manipulation}p{margin:0 0 18px}svg{display:block}img{max-width:100%;height:auto}h1,h2,h3{margin:0;font-weight:550}h1{letter-spacing:-.055em}h2,h3{letter-spacing:-.025em}.site-header{border-bottom:1px solid 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a:hover,.footer-email:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}.footer-email{margin-left:8px}.page-intro{padding:32px 0 36px;border-bottom:1px solid var(--line)}.back-link{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);padding:10px 0}.back-link:hover{color:var(--blue)}.page-heading{display:flex;align-items:center;gap:15px;margin-top:30px;margin-bottom:20px}.page-intro h1{font-size:clamp(30px,4vw,45px);line-height:1.3;margin-bottom:22px;letter-spacing:-.04em}.review-note{font-size:11px;border:1px solid #d7d3bd;background:#f3f0e5;color:#736b4f;border-radius:20px;padding:7px 11px}.prelude{font-size:13px;line-height:1.8;color:var(--muted)}.prelude p{margin-bottom:7px}.prelude p:last-child{margin-bottom:0}.prelude strong{font-weight:500}.prelude a,.document a,.home-contact 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svg{height:20px;width:20px}.sidebar-contact>span:last-child{margin-left:auto}.document{min-width:0;padding-bottom:12px}.document-section{margin-bottom:30px;padding-bottom:27px;border-bottom:1px solid var(--line);font-size:14px;line-height:1.95}.document-section:last-child{border-bottom:0;margin-bottom:0}.document-section h2{font-size:21px;line-height:1.5;margin-bottom:18px;color:var(--ink)}.document-section p,.document-section li{color:#526369}.document-section p:last-child{margin-bottom:0}.document-section ul{padding-left:21px;margin:8px 0 19px}.document-section li{padding-left:4px;margin:7px 0}.document-section li::marker{color:#8fa6ac}.document-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:20px 0 33px}.page-support .prelude{max-width:700px;font-size:15px}.page-support .prelude p:first-child{font-size:19px;color:var(--ink);margin-bottom:10px}.page-support .prelude p:last-child{margin-top:20px;display:inline-block;padding:13px 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@media(max-width:650px){.header-inner,.shell,.footer-inner{padding-left:22px;padding-right:22px}.header-inner{flex-wrap:wrap;gap:0;min-height:auto;padding-top:18px;padding-bottom:10px}.brand{font-size:21px}.brand .brand-icon{width:32px;height:32px}.language-switch{margin-left:auto}.primary-nav{order:3;width:100%;margin:13px 0 0;justify-content:space-between;gap:12px;font-size:12px}.primary-nav a{padding:11px 0}.hero{grid-template-columns:1fr;padding:37px 0 31px;gap:29px}.hero h1{font-size:41px;max-width:380px;line-height:1.35}.hero-description{margin:18px 0;max-width:480px;font-size:14px}.eyebrow{margin-bottom:15px}.hero-art{max-width:none;border-radius:100px 100px 20px 20px;height:265px}.hero-art img{height:238px;width:100%;object-fit:contain}.art-caption{position:absolute;bottom:0;left:0;right:0;padding:0 23px 14px}.art-caption .small-mark{display:none}.art-caption{font-size:10px}.section-heading{margin-bottom:17px}.section-heading h2{font-size:17px}.entry-grid{grid-template-columns:1fr;gap:12px}.entry-card{padding:20px;display:grid;grid-template-columns:43px minmax(0,1fr);gap:0 17px;border-radius:17px}.card-top{margin:0;grid-row:1/3;align-items:start}.icon{height:42px;width:42px;border-radius:12px}.icon svg{height:23px;width:23px}.card-number{display:none}.entry-card h3{font-size:17px;margin:1px 0 7px}.entry-card p{font-size:12px;max-width:none}.home-contact{font-size:11px;gap:8px;padding:24px 0 30px}.footer-inner{gap:18px;align-items:center;padding-top:25px;padding-bottom:25px}.footer-inner nav{width:100%;order:3;margin:0;justify-content:space-between;font-size:11px;gap:10px}.footer-brand{font-size:15px;gap:3px}.footer-brand .brand-icon{width:24px;height:24px}.footer-email{font-size:10px;margin-left:auto}.page-intro{padding:19px 0 26px}.page-heading{margin-top:23px}.page-intro h1{font-size:30px}.prelude{font-size:12px}.review-note{font-size:10px}.document-layout{display:block;padding-top:23px}.contents{position:static;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:28px}.contents>p{margin-bottom:12px}.contents nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 10px;font-size:11px}.contents nav a{padding:7px 0 7px 12px}.sidebar-contact{display:none}.document-section{font-size:14px;line-height:1.9;padding-bottom:23px;margin-bottom:25px}.document-section h2{font-size:20px}.page-support .prelude{font-size:14px}.page-support .prelude p:first-child{font-size:17px}.page-support .prelude p:last-child{padding:12px 13px;font-size:12px}.page-support .contents nav{grid-template-columns:repeat(3,minmax(0,1fr))}summary{font-size:14px;padding:18px 0}.answer{padding-right:10px}.document-bottom{padding-bottom:25px}html[lang=en] .hero h1{font-size:46px;max-width:340px}html[lang=en] .page-intro h1{font-size:32px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.tagline-line{display:block;white-space:nowrap}
@media(max-width:650px){html[lang=zh-Hans] .hero h1{font-size:clamp(32px,10vw,41px)}}

.brand-icon{display:block;object-fit:contain;flex-shrink:0}