:root{
  --bg:#0C0B08;
  --bg-deep:#080706;
  --panel:#161410;
  --panel-2:#1E1A14;
  --title:#F3E6C0;
  --text:#E4D6B0;
  --muted:#B89A58;
  --aux:#8A7040;
  --gold:#C9A227;
  --gold-hi:#E0C056;
  --gold-deep:#8A6E18;
  --copper:#8A5A2A;
  --warm:#F7EFD4;
  --border:rgba(201,162,39,.22);
  --border-strong:rgba(201,162,39,.50);
  --shadow:0 12px 28px rgba(0,0,0,.45);
  --max:980px;
  --side:148px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;padding-top:136px;overflow-x:hidden}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{display:block;max-width:100%;height:auto}
button{border:0}
:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px}
.museum-note{position:fixed;z-index:900;top:0;left:0;right:0;height:20px;background:var(--bg-deep);color:var(--gold-hi);display:flex;align-items:center;justify-content:space-between;padding:0 18px;font-size:12px;border-bottom:1px solid rgba(201,162,39,.15)}
.note-search{background:transparent;color:var(--gold-hi);padding:0 4px;min-height:20px;cursor:pointer}
.museum-head{position:fixed;z-index:899;top:20px;left:0;right:0;height:52px;background:#0f0d09;border-bottom:1px solid var(--gold-deep);display:grid;grid-template-columns:minmax(170px,1fr) auto minmax(170px,1fr);align-items:center;padding:0 18px;box-shadow:0 8px 18px rgba(0,0,0,.22)}
.brand-lockup{display:flex;align-items:center;min-width:0;height:44px}
.brand-logo{height:24px;width:auto;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:700;color:var(--title);white-space:nowrap}
.brand-en{font-size:13px;color:var(--gold-hi);letter-spacing:.11em;white-space:nowrap}
.head-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.head-app,.menu-trigger{height:44px;min-width:58px;display:inline-flex;align-items:center;justify-content:center;border-radius:7px;cursor:pointer;font-size:14px}
.head-app{color:var(--title);border:1px solid var(--border)}
.menu-trigger{background:transparent;color:var(--gold-hi);border:1px solid var(--border-strong)}
.head-app:hover,.menu-trigger:hover{border-color:var(--gold-hi);color:var(--warm)}
.double-nav{position:fixed;z-index:898;top:72px;left:0;right:0;height:64px;background:#0b0a08;border-bottom:1px solid var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center}
.double-row{height:32px;display:flex;align-items:center;justify-content:center;gap:32px;font-size:13px}
.double-row a{height:30px;display:inline-flex;align-items:center;color:var(--text);border-bottom:2px solid transparent;padding:0 5px}
.double-row a:hover,.double-row a.is-current{color:var(--gold-hi);border-bottom-color:var(--gold-hi)}
.site-shell{width:min(1148px,calc(100% - 32px));margin:0 auto;position:relative;min-height:65vh}
.side-nav{position:fixed;top:154px;width:var(--side);padding:12px 10px 16px;background:var(--panel);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;max-height:calc(100vh - 178px);overflow:auto;scrollbar-width:thin}
.side-nav strong{font-size:12px;color:var(--aux);margin:10px 8px 3px;font-weight:600}
.side-nav strong:first-child{margin-top:0}
.side-nav a{min-height:34px;padding:6px 8px;border-radius:6px;display:flex;align-items:center;color:var(--text);font-size:13px}
.side-nav a:hover{background:var(--panel-2);color:var(--warm)}
.side-nav a.is-current{color:var(--gold-hi)}
.main-content{width:min(var(--max),calc(100% - 172px));margin-left:172px;padding:34px 0 72px}
.eyebrow{font-size:12px;color:var(--muted);letter-spacing:.12em;margin-bottom:8px}
h1,h2,h3{margin:0;color:var(--title);font-weight:700}
h1{font-size:24px;line-height:1.3;margin-bottom:14px}
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(--warm);max-width:760px}
.page-hero{padding:26px 0 24px;border-bottom:1px solid var(--border);margin-bottom:28px}
.page-hero .intro{max-width:820px;color:var(--text)}
.page-hero.compact{padding-top:12px}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.btn-primary,.btn-secondary{height:44px;min-width:110px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:7px;font-size:14px;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#E0C056 0%,#C9A227 55%,#8A6E18 100%);color:#1A1408;font-weight:700}
.btn-secondary{background:#0d0c09;border:1px solid var(--gold);color:var(--gold-hi)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-secondary:hover{background:var(--panel);color:var(--warm)}
.section{margin:34px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
.section-kicker{font-size:12px;color:var(--muted)}
.section-copy{max-width:780px}
.media-slot{width:100%;background:#090806;border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:118px}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.hero-slot{height:176px}
.note-slot{height:160px}
.banner-slot{height:200px}
.app-slot{height:300px;max-width:250px;margin-left:auto}
.icon-slot{width:64px;height:64px;min-height:64px}
.icon-slot img{width:48px;height:48px;object-fit:contain}
.after-media{margin-top:14px}
.brand-cover{height:180px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}
.card:hover{border-color:rgba(201,162,39,.35)}
.number-list{display:grid;gap:12px}
.number-item{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:18px 0;border-top:1px solid var(--border)}
.number-item:first-child{border-top-color:var(--border-strong)}
.number-label{color:var(--gold-hi);font-weight:700}
.number-item h3{margin-bottom:7px}
.dual-notes{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.note-pane{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}
.note-pane h3{margin-bottom:8px}
.node-flow{display:flex;flex-wrap:wrap;gap:12px}
.node{flex:1 1 190px;background:var(--panel);border-left:3px solid var(--gold-deep);padding:16px;border-radius:0 8px 8px 0;min-width:0}
.node strong{display:block;color:var(--gold-hi);margin-bottom:5px}
.work-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.work-item{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}
.work-item small{display:block;color:var(--muted);margin-bottom:5px}
.periods{display:grid;gap:18px}
.period{padding:18px 0;border-bottom:1px solid var(--border)}
.period:last-child{border-bottom:0}
.period h3{color:var(--gold-hi);margin-bottom:8px}
.status-board{display:grid;gap:10px}
.status-row{display:grid;grid-template-columns:96px 1fr;gap:14px;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:15px 16px}
.status-tag{display:inline-flex;align-items:center;justify-content:center;align-self:start;min-height:32px;border:1px solid var(--border-strong);border-radius:999px;color:var(--gold-hi);font-size:13px;padding:2px 10px}
.dark-band{background:var(--bg-deep);border:1px solid var(--border-strong);border-radius:10px;padding:24px;box-shadow:var(--shadow)}
.app-band{display:grid;grid-template-columns:1fr 250px;gap:28px;align-items:center}
.app-visual{display:grid;gap:12px;justify-items:end}
.app-visual .icon-slot{margin-right:186px}
.checklist{display:grid;gap:10px}
.check-item{padding:14px 16px;background:var(--panel);border-left:3px solid var(--copper);border-radius:0 7px 7px 0}
.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-mini details,.faq-full details{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:0 16px}
.faq-mini summary,.faq-full summary{cursor:pointer;color:var(--title);font-weight:700;padding:14px 0;min-height:48px}
.faq-mini p,.faq-full p{padding:0 0 15px;margin:0;color:var(--text)}
.text-columns{column-count:2;column-gap:32px}
.text-columns p{break-inside:avoid}
.single-notes{display:grid;gap:14px}
.single-note{padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:8px}
.timeline{display:grid;gap:0;border-left:1px solid var(--border-strong);margin-left:10px}
.timeline-item{position:relative;padding:0 0 24px 22px}
.timeline-item:before{content:"";position:absolute;left:-5px;top:7px;width:9px;height:9px;border-radius:50%;background:var(--gold)}
.timeline-item h3{margin-bottom:6px;color:var(--gold-hi)}
.method-steps{counter-reset:method;display:grid;gap:14px}
.method-step{counter-increment:method;display:grid;grid-template-columns:46px 1fr;gap:16px;padding:17px;background:var(--panel);border:1px solid var(--border);border-radius:8px}
.method-step:before{content:counter(method,decimal-leading-zero);color:var(--gold-hi);font-weight:700;font-size:20px}
.topic-list{display:grid;gap:12px}
.topic-row{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:18px;border-bottom:1px solid var(--border)}
.topic-row:nth-child(odd){background:var(--panel)}
.topic-row h3{color:var(--gold-hi)}
.policy-block{padding:18px 0;border-top:1px solid var(--border)}
.policy-block h2{margin-bottom:8px}
.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.help-card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}
.contact-paths{display:grid;gap:14px}
.contact-path{padding:18px;background:var(--panel);border-top:1px solid var(--border-strong);border-radius:0 0 8px 8px}
.notice-box{padding:16px 18px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;color:var(--warm)}
.about-banner{margin:18px 0 26px}
.about-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.about-principles .card{min-height:165px}
.museum-note button,.sheet-close,.search-top button{min-width:44px;min-height:44px}
.site-footer{background:var(--bg-deep);border-top:1px solid var(--gold-deep);color:var(--text);font-size:13px}
.footer-inner{width:min(1148px,calc(100% - 32px));margin:0 auto;padding:30px 0 84px}
.footer-brand{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border);padding-bottom:18px;margin-bottom:18px}
.footer-brand strong{color:var(--title);font-size:16px}
.footer-brand span{color:var(--muted);font-size:12px;letter-spacing:.08em}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.footer-grid section{display:flex;flex-direction:column;gap:6px}
.footer-grid h2{font-size:13px;color:var(--muted);margin-bottom:4px}
.footer-grid a{min-height:28px;display:flex;align-items:center}
.footer-grid a:hover{color:var(--gold-hi)}
.footer-note{margin-top:22px;color:var(--text);max-width:900px}
.copyright{color:var(--aux);margin-bottom:0}
.layer-mask{position:fixed;z-index:940;inset:0;background:rgba(0,0,0,.72);opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}
.layer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.full-menu{position:fixed;z-index:950;left:0;right:0;bottom:0;max-height:72vh;background:#0d0b08;border-top:1px solid var(--gold);box-shadow:0 -18px 40px rgba(0,0,0,.48);transform:translateY(103%);visibility:hidden;pointer-events:none;transition:.22s ease;padding:18px 20px max(24px,env(safe-area-inset-bottom));overflow:auto}
.full-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}
.sheet-head{display:flex;justify-content:space-between;align-items:center;gap:16px;max-width:1100px;margin:0 auto 16px}
.sheet-brand{display:flex;align-items:center;gap:10px;color:var(--title)}
.sheet-close,.search-top button{background:transparent;color:var(--gold-hi);border:1px solid var(--border-strong);border-radius:7px;padding:0 12px;cursor:pointer}
.sheet-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1.2fr .8fr 1.3fr;gap:22px}
.sheet-grid h2{font-size:13px;color:var(--muted);margin-bottom:7px}
.sheet-grid section{display:flex;flex-direction:column;gap:6px}
.sheet-grid a{display:flex;flex-direction:column;padding:8px 0;border-bottom:1px solid rgba(201,162,39,.12)}
.sheet-grid b{font-size:14px;color:var(--title)}
.sheet-grid span{font-size:12px;color:var(--aux)}
.search-layer{position:fixed;z-index:955;top:72px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.18s ease}
.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}
.search-card{width:min(760px,calc(100% - 32px));margin:12px auto 0;background:var(--bg-deep);border:1px solid var(--border-strong);border-radius:9px;box-shadow:var(--shadow);padding:18px}
.search-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:4px}
.search-top strong{font-size:18px;color:var(--title)}
.search-presets{display:flex;flex-wrap:wrap;gap:8px}
.search-presets a{min-height:44px;padding:0 12px;border:1px solid var(--border);border-radius:6px;display:inline-flex;align-items:center;color:var(--gold-hi)}
.search-presets a:hover{border-color:var(--gold-hi);background:var(--panel)}
.mobile-bar{display:none}
@media (min-width:1150px){.side-nav{left:calc(50% - 574px)}}
@media (min-width:901px) and (max-width:1149px){.side-nav{left:16px}.site-shell{width:calc(100% - 32px)}}
@media (max-width:900px){
  body{padding-top:72px;padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  .museum-head{grid-template-columns:minmax(0,1fr) auto}.brand-en{display:none}.head-actions{gap:4px}.head-app,.menu-trigger{min-width:54px}
  .double-nav,.side-nav{display:none}
  .site-shell{width:calc(100% - 32px)}
  .main-content{width:100%;margin-left:0;padding:28px 0 50px}
  .mobile-bar{display:grid;position:fixed;z-index:920;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(4,1fr);background:var(--bg-deep);border-top:1px solid var(--border-strong)}
  .mobile-bar a{display:flex;align-items:center;justify-content:center;min-height:48px;color:var(--text);font-size:13px}
  .mobile-bar a.is-current{background:var(--gold);color:#1A1408;font-weight:700}
  .footer-inner{padding-bottom:80px}
  .search-layer{top:0;bottom:0;background:var(--bg-deep);display:flex;align-items:flex-start}
  .search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;padding:72px 16px 24px;box-shadow:none}
  .full-menu{padding-left:16px;padding-right:16px}
  .sheet-grid{grid-template-columns:1fr 1fr}
  .app-band{grid-template-columns:1fr}.app-visual{justify-items:start}.app-slot{margin:0;max-width:100%}.app-visual .icon-slot{margin-right:0}
  .about-principles{grid-template-columns:1fr}
}
@media (max-width:680px){
  .museum-note{padding:0 10px}
  .museum-head{padding:0 10px}
  .brand-fallback{font-size:15px}
  .head-app,.menu-trigger{padding:0 8px}
  h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}
  .number-item{grid-template-columns:1fr;gap:7px}.number-label{font-size:13px}
  .dual-notes,.work-grid,.faq-mini,.help-grid{grid-template-columns:1fr}
  .text-columns{column-count:1}
  .topic-row{grid-template-columns:1fr;gap:8px}
  .status-row{grid-template-columns:1fr;gap:8px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .sheet-grid{grid-template-columns:1fr}
  .app-slot{height:280px}
  .section{margin:30px 0}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}