:root{
  --bg:#FFF6F4;
  --bg-deep:#F6E4E2;
  --surface:#FFFFFF;
  --surface-soft:#FBECEA;
  --title:#1C1212;
  --text:#3E2424;
  --muted:#6E4848;
  --quiet:#9A7070;
  --red:#B4232C;
  --red-bright:#E23B44;
  --red-deep:#7A1520;
  --gold:#C4A06A;
  --ink:#1C1212;
  --border:rgba(180,35,44,.16);
  --shadow:0 12px 28px rgba(28,18,18,.08);
  --glow:0 6px 16px rgba(180,35,44,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);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;padding-top:72px}
body.ui-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
.skip-link{position:fixed;left:12px;top:-80px;z-index:1000;background:#fff;color:var(--red-deep);padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}
.skip-link:focus{top:12px}
.site-top{position:fixed;top:0;left:0;right:0;z-index:120;background:var(--bg)}
.topline{height:18px;background:var(--red-deep);color:#fff;font-size:12px;line-height:18px}
.topline-inner,.brandbar-inner,.quick-nav-inner,.site-main,.footer-inner{width:min(960px,calc(100% - 32px));margin:0 auto}
.topline-inner{display:flex;align-items:center;justify-content:space-between;height:18px}
.plain-button{position:relative;border:0;background:transparent;color:#fff;padding:0 2px;min-width:44px;height:18px;text-align:right}.plain-button:after{content:"";position:absolute;inset:-13px -8px}
.brandbar{height:54px;background:var(--bg);border-bottom:1px solid var(--border)}
.brandbar-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-link{min-height:44px;display:flex;align-items:center;max-width:220px}
.brand-logo{height:24px;width:auto;object-fit:contain;object-position:center}
.brand-text{font-weight:800;font-size:16px;color:var(--red-deep);letter-spacing:.04em}
.brand-actions{display:flex;align-items:center;gap:8px;white-space:nowrap}
.app-link,.menu-open{height:44px;min-width:72px;padding:0 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;transition:filter .18s ease,box-shadow .18s ease,transform .18s ease}
.app-link{background:linear-gradient(135deg,var(--red-bright) 0%,var(--red) 55%,var(--red-deep) 100%);color:#fff;box-shadow:var(--glow)}
.menu-open{border:1px solid var(--border);background:#fff;color:var(--red-deep)}
.app-link:hover,.primary-btn:hover,.quick-item.is-current:hover,.mobile-bottom .is-current:hover{filter:brightness(1.05);box-shadow:0 0 0 3px rgba(226,59,68,.28),0 10px 24px rgba(122,21,32,.28)}
.app-link:active,.primary-btn:active,.quick-item.is-current:active,.mobile-bottom .is-current:active{filter:brightness(1.08);box-shadow:0 0 0 4px rgba(196,160,106,.42),0 0 22px rgba(226,59,68,.50)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--red-bright);outline-offset:2px}
.quick-nav{position:sticky;top:72px;z-index:90;height:44px;background:var(--surface-soft);border-bottom:1px solid var(--border)}
.quick-nav-inner{height:44px;display:flex;align-items:center;gap:8px}
.seal-mark{width:22px;height:22px;border:1px solid var(--red);color:var(--red-deep);display:inline-flex;align-items:center;justify-content:center;font-size:12px;border-radius:4px;background:#fff}
.quick-item{height:44px;display:inline-flex;align-items:center;gap:6px;padding:0 12px;border-radius:9px;border:1px solid transparent;color:var(--text);font-size:13px}
.quick-item.is-current{background:var(--red-deep);color:#fff;border-color:var(--gold);box-shadow:var(--glow)}
.site-main{padding:26px 0 64px;min-height:60vh}
.breadcrumb{display:flex;align-items:center;gap:8px;color:var(--quiet);font-size:13px;margin:0 0 16px}
.breadcrumb a{color:var(--red-deep)}
h1,h2,h3{color:var(--title);margin:0 0 12px;letter-spacing:-.02em}
h1{font-size:24px;line-height:1.3}
h2{font-size:20px;line-height:1.4}
h3{font-size:16px;line-height:1.45}
p{margin:0 0 14px}
.lead{font-size:16px;color:var(--muted);max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--red-deep);font-weight:700;letter-spacing:.06em;margin-bottom:10px}
.eyebrow:before{content:"";width:18px;height:1px;background:var(--gold)}
.section{margin-top:28px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:14px}
.section-head p{margin:0;color:var(--muted);font-size:13px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}
.soft-card{background:var(--surface-soft);border:1px solid var(--border);border-radius:12px}
.primary-btn,.secondary-btn{height:44px;min-width:104px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;transition:filter .18s ease,box-shadow .18s ease,transform .18s ease}
.primary-btn{background:linear-gradient(135deg,var(--red-bright) 0%,var(--red) 55%,var(--red-deep) 100%);color:#fff;box-shadow:var(--glow)}
.secondary-btn{background:#fff;color:var(--red-deep);border:1px solid var(--border)}
.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.media-slot{background:linear-gradient(180deg,#fff 0%,var(--surface-soft) 100%);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:120px}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-wide{width:100%;height:168px}
.media-square{width:240px;max-width:100%;height:176px}
.media-short{width:100%;height:160px}
.media-app{width:240px;max-width:100%;height:320px}
.media-banner{width:100%;height:200px}
.media-icon{width:64px;height:64px;min-height:64px;border-radius:16px}
.home-intro{padding:4px 0 8px;max-width:780px}
.home-intro .index-strip{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.index-chip{display:inline-flex;align-items:center;min-height:34px;padding:5px 10px;background:#fff;border:1px solid var(--border);border-radius:999px;color:var(--red-deep);font-size:13px}
.home-intro h1{max-width:720px;font-size:26px}
.home-intro .slogan{font-size:18px;color:var(--red-deep);font-weight:700;margin:2px 0 12px}
.cut-feature{display:grid;grid-template-columns:240px minmax(0,1fr);gap:18px;align-items:center;padding:18px}
.cut-feature .copy{padding-right:6px}
.double-red{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}
.double-red article{padding:18px;border-top:4px solid var(--red)}
.double-red article:first-child{background:#fff}
.double-red article:last-child{background:var(--surface-soft)}
.double-red .media-slot{margin-bottom:14px}
.sheet-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.sheet-card{padding:18px;position:relative;overflow:hidden}
.sheet-card:after{content:"";position:absolute;right:-26px;bottom:-26px;width:86px;height:86px;border:18px solid rgba(180,35,44,.06);border-radius:50%}
.sheet-card .media-slot{margin-bottom:14px}
.status-card{padding:18px;display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:18px;align-items:center}
.status-pill{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:999px;background:var(--surface-soft);border:1px solid var(--border);color:var(--red-deep);font-weight:700;font-size:13px;margin-right:6px}
.annotation{display:grid;grid-template-columns:1fr 220px;gap:18px;padding:18px;background:#fff;border-left:6px solid var(--gold)}
.topic-band{padding:18px;background:var(--surface-soft);border:1px solid var(--border);border-radius:12px}
.topic-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.topic-list a{min-height:88px;padding:14px;border-radius:10px;background:#fff;border:1px solid var(--border);display:flex;flex-direction:column;justify-content:space-between}
.topic-list small{color:var(--muted)}
.scene-card{display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px;padding:18px}
.app-wrap{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px;align-items:start;padding:20px}
.app-visuals{display:grid;gap:10px;justify-items:center}
.app-icon-row{display:flex;align-items:center;gap:10px;justify-content:center}
.app-icon-row strong{color:var(--red-deep)}
.home-tail{display:grid;grid-template-columns:1fr;gap:16px}
.long-card{padding:20px}
.faq-preview{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.faq-preview article{padding:14px;background:#fff;border:1px solid var(--border);border-radius:10px}
.faq-preview h3{margin-bottom:6px}
.page-hero{margin-bottom:22px}
.page-hero .lead{margin-top:8px}
.split-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
.split-layout .main-stack,.split-layout .side-stack{display:grid;gap:14px}
.story-card{padding:18px}
.story-card.accent{border-top:4px solid var(--red)}
.note-box{padding:16px;background:var(--surface-soft);border:1px solid var(--border);border-radius:12px}
.source-note{padding:16px 18px;border-left:4px solid var(--gold);background:#fff;border-radius:0 12px 12px 0;box-shadow:var(--shadow)}
.cut-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:18px;align-items:start}
.cut-layout .stack{display:grid;gap:14px}
.cut-layout .side-index{position:sticky;top:136px;padding:16px;background:var(--surface-soft);border:1px solid var(--border);border-radius:12px}
.cut-layout .side-index a{display:block;padding:9px 0;border-bottom:1px solid var(--border);color:var(--red-deep)}
.cut-layout .side-index a:last-child{border-bottom:0}
.page-sheets{display:grid;gap:14px}
.page-sheet{padding:20px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);display:grid;grid-template-columns:72px minmax(0,1fr);gap:18px}
.page-sheet .stamp{width:64px;height:64px;border:2px solid var(--red);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--red-deep);font-weight:800;background:var(--surface-soft)}
.status-flow{display:grid;gap:12px}
.status-row{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px;display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;align-items:start}
.status-row strong{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:6px 10px;border-radius:9px;color:#fff;background:var(--red-deep);box-shadow:var(--glow)}
.commentary-long{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:24px;position:relative}
.commentary-long:before{content:"编辑观点";display:inline-flex;margin-bottom:14px;padding:5px 9px;border-radius:999px;background:var(--red-deep);color:#fff;font-size:12px;font-weight:700}
.commentary-long h2{margin-top:24px}
.commentary-long blockquote{margin:18px 0;padding:16px 18px;background:var(--surface-soft);border-left:4px solid var(--gold);color:var(--muted)}
.topic-directory{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.topic-entry{padding:18px;display:grid;gap:12px}
.topic-entry .topic-number{width:34px;height:34px;border-radius:8px;background:var(--red-deep);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.scene-guide{display:grid;gap:16px}
.scene-band{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px;align-items:center}
.letter-note{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:22px}
.letter-note .route{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}
.letter-note .route div{padding:14px;background:var(--surface-soft);border-radius:10px}
.wrap-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:22px;align-items:start}
.wrap-layout .visual-col{display:grid;gap:12px;justify-items:center;position:sticky;top:136px}
.wrap-layout .content-col{display:grid;gap:14px}
.clauses{display:grid;gap:14px}
.clause{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}
.clause h2{padding-bottom:8px;border-bottom:1px solid var(--border)}
.install-flow{display:grid;gap:12px;counter-reset:step}
.install-step{counter-increment:step;padding:18px 18px 18px 74px;position:relative;background:#fff;border:1px solid var(--border);border-radius:12px}
.install-step:before{content:counter(step);position:absolute;left:18px;top:18px;width:38px;height:38px;border-radius:9px;background:var(--red-deep);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.help-card{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}
.faq-stack{display:grid;gap:10px}
.faq-item{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}
.faq-item h2{font-size:16px;color:var(--red-deep)}
.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.contact-path{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}
.contact-path ul{padding-left:20px;margin:8px 0 0}
.about-banner{margin-bottom:18px}
.brand-statement{display:grid;grid-template-columns:1fr 280px;gap:18px;align-items:start}
.brand-statement .brand-copy{padding:20px;background:#fff;border:1px solid var(--border);border-radius:12px}
.brand-statement .brand-side{display:grid;gap:12px}
.brand-values{display:grid;gap:10px}
.brand-values div{padding:14px;background:var(--surface-soft);border:1px solid var(--border);border-radius:10px}
.side-menu{position:fixed;right:16px;top:82px;z-index:160;width:min(420px,90vw);max-height:68vh;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 20px 60px rgba(28,18,18,.22);visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px) scale(.98);transition:.18s ease;overflow:hidden}
.side-menu.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}
.menu-head{height:56px;padding:0 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:var(--bg)}
.menu-brand{display:flex;align-items:center;gap:10px;color:var(--red-deep)}
.menu-close,.search-close{min-width:54px;min-height:44px;border:1px solid var(--border);background:#fff;border-radius:9px;color:var(--red-deep)}
.menu-scroll{max-height:calc(68vh - 56px);overflow:auto;padding:12px 14px 18px}
.menu-group+ .menu-group{margin-top:16px}
.menu-group h2{font-size:13px;color:var(--red-deep);margin-bottom:6px}
.menu-group a{display:grid;grid-template-columns:132px minmax(0,1fr);gap:8px;padding:9px 0;border-bottom:1px solid rgba(180,35,44,.08)}
.menu-group a span{font-weight:700;color:var(--title)}
.menu-group a small{font-size:12px;color:var(--muted)}
.overlay{position:fixed;inset:0;z-index:140;background:rgba(28,18,18,.34);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s ease}
.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.search-panel{position:fixed;left:0;right:0;top:72px;z-index:170;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.18s ease}
.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}
.search-card{width:min(640px,calc(100% - 32px));margin:8px auto 0;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 18px 50px rgba(28,18,18,.18);padding:16px}
.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;color:var(--red-deep)}
.search-card label{display:block;font-weight:700;margin-bottom:8px}
.search-card input{width:100%;height:44px;border:1px solid var(--border);border-radius:10px;padding:0 12px;color:var(--title);background:#fff}
.search-card p{font-size:12px;color:var(--muted);margin:8px 0}
.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.search-presets a{min-height:44px;padding:7px 12px;background:var(--surface-soft);border:1px solid var(--border);border-radius:999px;color:var(--red-deep)}
.site-footer{background:var(--ink);color:var(--surface-soft);border-top:1px solid var(--red);font-size:13px;padding:28px 0 30px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.footer-brand div{display:grid;line-height:1.2}
.footer-brand strong{font-size:16px;color:#fff}
.footer-brand span{font-size:11px;color:var(--gold);letter-spacing:.08em;margin-top:3px}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:18px 0;border-top:1px solid rgba(251,236,234,.12);border-bottom:1px solid rgba(251,236,234,.12)}
.footer-links h2{font-size:13px;color:var(--gold);margin-bottom:8px}
.footer-links a{display:inline-block;margin-right:12px;margin-bottom:6px;color:var(--surface-soft)}
.footer-note{color:#d8c5c2;max-width:760px;margin:18px 0 8px}
.copyright{color:#b99e9b;margin:0}
.mobile-bottom{display:none}
@media (max-width:760px){
  body{padding-top:72px;padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .topline-inner,.brandbar-inner,.site-main,.footer-inner{width:calc(100% - 32px)}
  .quick-nav{display:none}
  .site-main{padding-top:20px;padding-bottom:48px}
  .brand-actions{gap:6px}
  .app-link,.menu-open{min-width:64px;padding:0 12px}
  .cut-feature,.double-red,.sheet-pair,.status-card,.annotation,.scene-card,.app-wrap,.split-layout,.cut-layout,.page-sheet,.scene-band,.wrap-layout,.brand-statement{grid-template-columns:1fr}
  .cut-feature{align-items:start}
  .media-square,.media-app{margin:0 auto}
  .status-card .media-slot,.annotation .media-slot,.scene-card .media-slot{order:-1}
  .topic-list,.faq-preview,.topic-directory,.help-grid,.contact-paths{grid-template-columns:1fr}
  .status-row{grid-template-columns:1fr;gap:10px}
  .cut-layout .side-index,.wrap-layout .visual-col{position:static}
  .letter-note .route{grid-template-columns:1fr}
  .footer-links{grid-template-columns:1fr;gap:10px}
  .footer-links section{padding-bottom:8px;border-bottom:1px solid rgba(251,236,234,.08)}
  .footer-links section:last-child{border-bottom:0}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:110;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(28,18,18,.08)}
  .mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}
  .mobile-bottom a.is-current{background:var(--red-deep);color:#fff;box-shadow:var(--glow)}
  .side-menu{right:5%;top:78px;width:90%;max-height:68vh}
  .menu-group a{grid-template-columns:1fr;gap:2px;padding:10px 0}
  .search-panel{top:0;bottom:0;background:var(--red-deep);color:#fff;transform:none}
  .search-panel.is-open{display:flex;align-items:flex-start}
  .search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;box-shadow:none;background:var(--red-deep);color:#fff;padding:calc(20px + env(safe-area-inset-top)) 16px 24px}
  .search-head{color:#fff}
  .search-close{border-color:rgba(255,255,255,.28);background:transparent;color:#fff}
  .search-card label,.search-card p{color:#fff}
  .search-card input{background:#fff;color:var(--title)}
  .search-presets a{background:#fff;color:var(--red-deep);border-color:#fff}
}
@media (max-width:420px){
  .home-intro h1{font-size:24px}
  .brandbar-inner{gap:8px}
  .brand-link{max-width:130px}
  .brand-actions{flex:1;justify-content:flex-end}
  .app-link,.menu-open{min-width:58px;padding:0 10px}
}