*{box-sizing:border-box}
:root{--bg:#F5F3EE;--card:#fff;--soft:#EEF1F4;--ink:#20262F;--body:#3E4752;--muted:#707986;--deep:#253544;--red:#A85E4D;--sand:#E7DFD2;--line:#DDD9D1;--footer:#202934}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--body);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
body.locked{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;object-fit:contain;object-position:center;display:block}
button,input{font:inherit}
button{cursor:pointer}
.shell{width:min(1180px,calc(100% - 64px));margin:0 auto;min-width:0}
.site-header{background:rgba(245,243,238,.98);border-bottom:1px solid var(--line)}
.brand-row{min-height:68px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px}
.brand{display:flex;align-items:center;min-width:0}
.logo-pad{display:inline-flex;background:#fff;padding:6px 10px;border:1px solid var(--line);border-radius:8px;align-items:center;justify-content:center}
.logo-pad img{height:28px;width:auto;max-width:180px}
.brand-text{display:flex;flex-direction:column;line-height:1.1;color:var(--ink)}
.brand-text strong{font-size:21px;letter-spacing:.04em}
.brand-text small{font-size:11px;letter-spacing:.12em;margin-top:5px;color:var(--muted)}
.brand-note{margin:0;color:var(--muted);font-size:14px}
.header-actions{display:flex;align-items:center;gap:10px}
.quiet-link,.noscript-link{min-height:44px;display:inline-flex;align-items:center;padding:0 8px;font-size:14px;color:var(--deep)}
.icon-button{width:44px;height:44px;border:1px solid var(--line);background:#fff;color:var(--deep);border-radius:9px}
.track-nav{border-top:1px solid var(--line)}
.track-inner{height:46px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.track-mark{font-size:12px;letter-spacing:.12em;color:var(--red);white-space:nowrap}
.track-links{display:flex;align-items:stretch;height:100%;gap:26px;min-width:0}
.track-links a{display:flex;align-items:center;position:relative;font-size:15px}
.track-links a.active{color:var(--ink);font-weight:600}
.track-links a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--red)}
main{display:block}
.page{padding:54px 0 68px}
.hero{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(260px,.82fr);gap:42px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:42px}
.eyebrow{font-size:13px;letter-spacing:.13em;color:var(--red);margin:0 0 10px}
h1,h2,h3{color:var(--ink);line-height:1.25;margin-top:0}
h1{font-size:clamp(28px,3vw,36px);margin-bottom:16px}
h2{font-size:25px;margin-bottom:14px}
h3{font-size:19px;margin-bottom:8px}
.lead{font-size:17px;max-width:760px;margin:0;color:#495361}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.action-link{min-height:44px;display:inline-flex;align-items:center;padding:0 16px;border:1px solid var(--deep);border-radius:9px;color:var(--deep);background:#fff}
.action-link.primary{background:var(--deep);color:#fff}
.media-frame{display:flex;align-items:center;justify-content:center;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:10px;min-width:0}
.media-frame img{width:auto;max-width:100%;height:auto;max-height:230px}
.home-hero .media-frame img{max-height:250px}
.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:48px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.index-card{padding:26px 26px 28px 0;min-width:0}
.index-card+ .index-card{border-left:1px solid var(--line);padding-left:26px}
.index-card p{margin:0 0 16px}
.text-link{color:var(--red);text-decoration:underline;text-underline-offset:4px}
.home-section{padding:54px 0;border-bottom:1px solid var(--line)}
.split{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(230px,.65fr);gap:38px;align-items:start}
.split.reverse{grid-template-columns:minmax(230px,.7fr) minmax(0,1.3fr)}
.stack-images{display:grid;gap:14px}
.stack-images .media-frame img{max-height:160px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;margin-top:42px}
.article-layout.with-side{grid-template-columns:240px minmax(0,1fr);align-items:start}
.side-index{border-top:2px solid var(--deep);padding-top:14px}
.side-index a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}
.article{max-width:820px;min-width:0}
.article.wide{max-width:920px}
.article section{margin-bottom:40px}
.article p{margin:0 0 16px}
.article ul{padding-left:1.2em}
.theme-index{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:34px 0 44px}
.theme-box{background:var(--card);border:1px solid var(--line);padding:18px;border-radius:10px;min-width:0}
.theme-box span{font-size:12px;color:var(--red);letter-spacing:.1em}
.list-lines{border-top:1px solid var(--line);margin-top:22px}
.list-lines div{display:grid;grid-template-columns:140px 1fr;gap:18px;padding:14px 0;border-bottom:1px solid var(--line)}
.home-band{display:grid;grid-template-columns:34% 1fr;gap:34px;align-items:center}
.home-band .media-frame img{max-height:180px}
.app-grid{display:grid;grid-template-columns:220px 1fr 220px;gap:32px;align-items:center}
.app-grid .app-media img{max-width:190px;max-height:320px}
.app-mark img{max-width:58px;max-height:60px}
.closing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.closing-grid a{background:#fff;border:1px solid var(--line);padding:18px;border-radius:9px;min-height:88px}
.faq-list{max-width:900px;margin-top:36px}
.faq-item{padding:24px 0;border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item h2{font-size:20px;margin-bottom:10px}
.overlay{position:fixed;inset:0;background:rgba(24,30,37,.38);z-index:80}
.drawer{position:fixed;top:0;right:0;width:min(460px,100%);height:100dvh;background:var(--bg);z-index:90;transform:translateX(100%);transition:transform .22s ease;pointer-events:none;visibility:hidden;overflow:auto}
.drawer.open{transform:translateX(0);pointer-events:auto;visibility:visible}
.drawer-head{position:sticky;top:0;background:var(--bg);display:flex;justify-content:space-between;align-items:center;padding:18px 24px;border-bottom:1px solid var(--line);z-index:2}
.drawer-body{padding:12px 24px 34px}
.drawer-body section{padding:18px 0;border-bottom:1px solid var(--line)}
.drawer-body h2{font-size:13px;color:var(--muted);font-weight:500;margin-bottom:8px}
.drawer-body a{display:block;min-height:44px;padding:9px 0;font-size:16px}
.search-panel{position:fixed;z-index:95;top:84px;left:50%;transform:translateX(-50%) translateY(-10px);width:min(680px,calc(100% - 36px));background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:0 14px 36px rgba(0,0,0,.08);opacity:0}
.search-panel.open{opacity:1;transform:translateX(-50%) translateY(0)}
.search-head{display:flex;justify-content:space-between;align-items:center}
.search-head h2{font-size:21px;margin:0}
.search-panel label{display:block;margin:16px 0 8px;font-size:14px;color:var(--muted)}
.search-panel input{width:100%;height:48px;border:1px solid var(--line);border-radius:8px;padding:0 12px;outline:none}
.search-panel input:focus{border-color:var(--deep);box-shadow:0 0 0 3px rgba(37,53,68,.12)}
.search-results{margin:12px 0}
.search-results a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}
.mobile-shortcuts{display:none;padding-top:20px;padding-bottom:20px}
.site-footer{background:var(--footer);color:#dbe0e4;padding:46px 0 28px}
.footer-top{display:flex;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:26px}
.footer-brand{max-width:680px}
.footer-brand strong{display:block;margin-top:10px}
.footer-brand p{margin:6px 0 0;color:#abb4bd}
.footer-logo{width:max-content}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px;padding:28px 0}
.footer-grid h2{color:#fff;font-size:14px}
.footer-grid a{display:block;min-height:38px;color:#c8cfd5;font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;color:#aeb7bf;font-size:13px}
:focus-visible{outline:3px solid rgba(168,94,77,.4);outline-offset:3px}
@media(max-width:1100px){
 .shell{width:min(1180px,calc(100% - 56px))}
 .brand-note{display:none}
 .brand-row{grid-template-columns:auto 1fr}
 .header-actions{justify-self:end}
 .track-links{gap:18px}
 .track-links a:nth-last-child(-n+2){display:none}
 .hero,.split,.split.reverse{grid-template-columns:1fr}
 .hero .media-frame{max-width:720px}
 .app-grid{grid-template-columns:190px 1fr}
 .app-mark{grid-column:1/-1;display:flex;align-items:center;gap:18px}
 .article-layout.with-side{grid-template-columns:220px minmax(0,1fr)}
}
@media(max-width:820px){
 .shell{width:calc(100% - 44px)}
 .track-nav{display:none}
 .brand-row{min-height:60px}
 .desktop-link{display:none}
 .page{padding:40px 0 52px}
 .content-grid{grid-template-columns:1fr}
 .index-card,.index-card+ .index-card{padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}
 .index-card:last-child{border-bottom:0}
 .home-band,.app-grid{grid-template-columns:1fr}
 .app-grid .app-media{justify-content:flex-start}
 .app-grid .app-media img{max-width:180px;max-height:300px}
 .theme-index{grid-template-columns:repeat(2,minmax(0,1fr))}
 .article-layout.with-side{grid-template-columns:1fr}
 .side-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px}
 .closing-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .mobile-shortcuts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
 .mobile-shortcuts a{min-height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:14px}
}
@media(max-width:560px){
 .shell{width:calc(100% - 32px)}
 body{font-size:15.8px}
 .brand-row{gap:10px}
 .brand-text strong{font-size:19px}
 .header-actions{gap:6px}
 h1{font-size:27px}
 h2{font-size:22px}
 .lead{font-size:16px}
 .page{padding:32px 0 42px}
 .hero{gap:24px;padding-bottom:30px}
 .home-section{padding:36px 0}
 .theme-index{grid-template-columns:1fr}
 .side-index{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .mobile-shortcuts{grid-template-columns:repeat(2,1fr)}
 .drawer{width:100%}
 .search-panel{top:12px;width:calc(100% - 24px)}
 .list-lines div{grid-template-columns:1fr;gap:4px}
}
@media(max-width:360px){
 .shell{width:calc(100% - 28px)}
 .brand-text small{display:none}
 .icon-button{width:44px}
 .brand-row{grid-template-columns:minmax(0,1fr) auto}
}
@media(prefers-reduced-motion:reduce){
 *{scroll-behavior:auto!important;transition:none!important}
}