*{box-sizing:border-box}
:root{
  --page:#F7F1D8;
  --deep:#E8DFA8;
  --card:#FFF9E8;
  --soft:#F0E8C0;
  --title:#16140C;
  --text:#2A2614;
  --muted:#5A5428;
  --assist:#7A7440;
  --ink:#16140C;
  --yellow:#E8C430;
  --border:rgba(22,20,12,.12);
  --accent-border:rgba(232,196,48,.55);
  --shadow:0 12px 28px rgba(22,20,12,.10);
  --radius:14px;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--page);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.skip-link{position:fixed;left:12px;top:-80px;z-index:999;background:var(--yellow);color:var(--ink);padding:8px 12px;border-radius:8px}
.skip-link:focus{top:10px}
.shell{width:min(960px,calc(100% - 32px));margin:0 auto}
.smart-edge{position:fixed;inset:0 0 auto 0;height:20px;background:var(--ink);color:var(--yellow);z-index:90;font-size:12px}
.smart-edge-inner{height:20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.text-button{border:0;background:transparent;color:var(--yellow);padding:0 6px;min-height:20px}
.smart-head{position:fixed;top:20px;left:0;right:0;height:54px;background:var(--card);border-bottom:1px solid var(--border);z-index:89}
.smart-head-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.brand-link{display:inline-flex;align-items:center;min-height:44px}
.brand-logo{height:24px;width:auto;max-width:164px;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:800;letter-spacing:.03em;color:var(--ink)}
.head-actions{display:flex;align-items:center;gap:8px}
.app-entry,.menu-button,.icon-button{min-height:44px;border:1px solid var(--ink);border-radius:12px;padding:0 14px;background:var(--card);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.menu-button{background:var(--ink);color:var(--yellow)}
.smart-grid{position:fixed;top:74px;left:0;right:0;height:48px;background:var(--card);border-bottom:1px solid var(--border);z-index:88}
.smart-grid-inner{height:48px;display:flex;align-items:center;gap:10px}
.smart-grid-link{width:120px;height:28px;border-radius:12px;border:1px solid var(--ink);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text);background:var(--card)}
.smart-grid-link.is-active{background:var(--ink);color:var(--yellow)}
.site-main{padding:150px 0 72px;min-height:70vh}
.page-hero{margin-bottom:26px}
.eyebrow{font-size:12px;color:var(--muted);font-weight:700;letter-spacing:.08em;margin:0 0 8px}
h1,h2,h3,p{margin-top:0}
h1{font-size:24px;line-height:1.3;color:var(--title);margin-bottom:14px}
h2{font-size:20px;line-height:1.35;color:var(--title);margin-bottom:10px}
h3{font-size:16px;line-height:1.45;color:var(--title);margin-bottom:7px}
p{margin-bottom:12px}
.lead{max-width:760px;color:var(--muted)}
.section{margin:24px 0}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:12px}
.section-heading p{margin:0;color:var(--assist);font-size:13px}
.primary-button,.secondary-button{min-height:42px;padding:0 17px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;line-height:1;white-space:nowrap}
.primary-button{background:linear-gradient(135deg,#16140C 0%,#E8C430 100%);color:#16140C;border:1px solid var(--accent-border);font-weight:800}
.secondary-button{background:var(--card);color:var(--ink);border:1px solid var(--ink);font-weight:700}
.primary-button:hover,.secondary-button:hover,.app-entry:hover,.menu-button:hover,.smart-grid-link:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
.media-slot{background:var(--card);border:1px solid var(--border);border-radius:14px;min-height:120px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-slot.wide{height:160px}
.media-slot.medium{height:210px}
.media-slot.tall{height:300px}
.media-slot.banner{height:200px}
.media-slot.icon{width:64px;height:64px;min-height:64px;border-radius:16px}
.media-slot.icon img{width:48px;height:48px}
.index-strip{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px}
.index-strip a{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px 14px;min-height:50px;display:flex;align-items:center;justify-content:space-between;font-weight:700}
.home-intro{padding:20px;border-radius:16px;background:var(--deep);border:1px solid var(--border)}
.home-intro .actions{margin-top:14px}
.parallel-row{display:grid;grid-template-columns:1.08fr .92fr;gap:14px}
.parallel-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px}
.parallel-item.with-image{display:grid;grid-template-columns:1fr .9fr;gap:14px;align-items:center}
.stack-cards{display:grid;gap:12px}
.stack-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:0 8px 18px rgba(22,20,12,.05)}
.stack-card:nth-child(2){margin-left:28px}
.stack-card:nth-child(3){margin-left:56px}
.fold-list{display:grid;gap:12px}
.fold-item{background:linear-gradient(90deg,var(--card) 0 94%,var(--yellow) 94% 100%);border:1px solid var(--border);border-radius:14px;padding:16px}
.center-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.center-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;text-align:center}
.period-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.period-item{background:var(--soft);border:1px solid var(--border);border-radius:14px;padding:16px}
.status-list{display:grid;gap:10px}
.status-item{display:grid;grid-template-columns:130px 1fr;gap:16px;align-items:start;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px}
.status-badge{display:inline-flex;align-items:center;justify-content:center;min-height:34px;border-radius:999px;background:var(--ink);color:var(--yellow);font-weight:800;font-size:13px}
.mid-visual{background:var(--deep);border-radius:16px;border:1px solid var(--border);padding:18px;text-align:center}
.mid-visual .visual-stack{display:flex;justify-content:center;align-items:center;gap:12px;margin:16px 0;flex-wrap:wrap}
.mid-visual .media-slot.tall{width:min(280px,100%)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px}
.content-grid{display:grid;gap:14px}
.content-block{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.content-block.dark{background:var(--ink);color:var(--page)}
.content-block.dark h2,.content-block.dark h3{color:var(--yellow)}
.content-block.dark p{color:var(--page)}
.split-band{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.split-band .content-block:nth-child(2n){background:var(--soft)}
.stagger-list{display:grid;gap:12px}
.stagger-list .content-block:nth-child(even){margin-left:40px}
.stagger-list .content-block:nth-child(odd){margin-right:40px}
.method-list{counter-reset:method;display:grid;gap:12px}
.method-item{position:relative;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px 16px 16px 62px}
.method-item:before{counter-increment:method;content:counter(method);position:absolute;left:16px;top:16px;width:30px;height:30px;border-radius:50%;background:var(--yellow);display:flex;align-items:center;justify-content:center;font-weight:900;color:var(--ink)}
.topic-list{display:grid;gap:10px}
.topic-row{display:grid;grid-template-columns:180px 1fr;gap:18px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px}
.memory-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.memory-item{background:var(--soft);border-left:5px solid var(--yellow);border-radius:12px;padding:16px}
.policy-list{display:grid;gap:14px}
.policy-block{padding:18px 20px;border:1px solid var(--border);border-radius:14px;background:var(--card)}
.policy-block:nth-child(even){background:var(--soft)}
.qa-list{display:grid;gap:12px}
.qa-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.contact-ways{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.contact-way{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.site-footer{background:var(--ink);color:var(--page);border-top:1px solid var(--yellow);padding:30px 0 70px;font-size:13px}
.footer-top{display:grid;grid-template-columns:1.1fr 2.9fr;gap:24px}
.footer-brand-row{display:flex;align-items:center;gap:10px}
.footer-brand strong{font-size:16px}
.footer-brand>span{color:var(--yellow)}
.footer-logo{filter:none}
.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.footer-links h2{font-size:13px;color:var(--yellow);margin-bottom:8px}
.footer-links a{display:block;color:var(--page);padding:3px 0}
.footer-note{border-top:1px solid rgba(232,196,48,.35);margin-top:22px;padding-top:18px;color:#F7F1D8}
.footer-note p:last-child{margin-bottom:0}
.smart-drawer{position:fixed;right:18px;top:86px;width:min(32vw,420px);max-width:calc(100vw - 36px);height:auto;max-height:calc(100vh - 108px);overflow:auto;background:var(--card);border:1px solid var(--ink);border-radius:16px;padding:16px;z-index:120;box-shadow:var(--shadow);visibility:hidden;pointer-events:none;opacity:0;transform:translateX(22px);transition:.22s ease}
.smart-drawer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.drawer-brand{display:flex;align-items:center;gap:8px}
.drawer-group{padding:10px 0;border-top:1px solid var(--border)}
.drawer-group h2{font-size:13px;margin-bottom:6px;color:var(--muted)}
.drawer-group a{display:grid;grid-template-columns:90px 1fr;gap:8px;padding:6px 0}
.drawer-group a span{font-size:12px;color:var(--muted)}
.search-panel{position:fixed;top:74px;left:0;right:0;z-index:119;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.2s ease}
.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}
.search-card{background:var(--card);border:1px solid var(--ink);border-radius:0 0 16px 16px;padding:18px;box-shadow:var(--shadow)}
.search-head{display:flex;justify-content:space-between;gap:18px;align-items:start}
.search-head strong{font-size:18px;color:var(--ink)}
.search-head p{font-size:13px;color:var(--muted);margin-bottom:10px}
.search-card label{display:block;font-size:13px;font-weight:700;margin:6px 0}
.search-card input{width:100%;min-height:44px;border:1px solid var(--ink);border-radius:12px;background:var(--card);color:var(--ink);padding:0 12px}
.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.search-presets a{border:1px solid var(--ink);border-radius:999px;padding:7px 12px;min-height:38px;background:var(--card)}
.page-overlay{position:fixed;inset:0;background:rgba(22,20,12,.46);z-index:110;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.mobile-bottom{display:none}
.notice{background:var(--soft);border:1px solid var(--accent-border);border-radius:14px;padding:14px 16px}
.link-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.compact-meta{font-size:13px;color:var(--assist)}
.hero-brand{display:grid;gap:14px}
.hero-brand .media-slot.banner{margin-bottom:4px}
.app-layout{display:grid;grid-template-columns:1fr minmax(220px,300px) 1fr;gap:16px;align-items:center}
.app-layout .media-slot.tall{height:300px}
.install-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.install-step{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px}
.legal-lead{border-left:6px solid var(--yellow);padding:15px 18px;background:var(--card);border-radius:12px}
@media (max-width:760px){
  .smart-grid{display:none}
  .site-main{padding-top:98px;padding-bottom:82px}
  .shell{width:min(100% - 32px,960px)}
  .app-entry,.menu-button{padding:0 10px}
  .parallel-row,.center-cards,.faq-grid,.split-band,.memory-list,.contact-ways{grid-template-columns:1fr}
  .parallel-item.with-image{grid-template-columns:1fr}
  .period-grid{grid-template-columns:1fr}
  .status-item{grid-template-columns:1fr}
  .stack-card:nth-child(2),.stack-card:nth-child(3),.stagger-list .content-block:nth-child(even),.stagger-list .content-block:nth-child(odd){margin-left:0;margin-right:0}
  .topic-row{grid-template-columns:1fr;gap:8px}
  .footer-top{grid-template-columns:1fr}
  .footer-links{grid-template-columns:1fr 1fr}
  .site-footer{padding-bottom:86px}
  .smart-drawer{top:82px;right:10px;width:86vw;max-width:86vw;max-height:calc(100vh - 150px)}
  .drawer-group a{grid-template-columns:80px 1fr}
  .search-panel{inset:0;background:var(--ink);padding:14px;overflow:auto}
  .search-card{width:100%;min-height:calc(100vh - 28px);border:1px solid var(--yellow);border-radius:16px;background:var(--ink);color:var(--yellow)}
  .search-head strong,.search-card label{color:var(--yellow)}
  .search-head p{color:var(--page)}
  .search-card .icon-button{background:var(--yellow);color:var(--ink);border-color:var(--yellow)}
  .search-card input{background:var(--ink);color:var(--page);border-color:var(--yellow)}
  .search-presets a{background:var(--ink);border-color:var(--yellow);color:var(--yellow)}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:95;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--card);border-top:1px solid var(--ink);display:grid;grid-template-columns:repeat(4,1fr)}
  .mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px}
  .mobile-bottom a.is-active{background:var(--yellow);color:var(--ink);font-weight:800}
  .app-layout{grid-template-columns:1fr}
  .app-layout .media-slot.tall{width:min(280px,100%);margin:0 auto}
  .install-steps{grid-template-columns:1fr}
}
@media (max-width:420px){
  .smart-edge-inner{gap:8px}
  .smart-edge-inner span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .head-actions{gap:6px}
  .app-entry,.menu-button{font-size:13px;padding:0 9px}
  h1{font-size:23px}
  .footer-links{grid-template-columns:1fr 1fr}
}