:root{
    --bg:#F4EDE0;
    --deep:#E4D6C0;
    --paper:#FBF6EC;
    --soft:#EDE3D0;
    --title:#1C160C;
    --text:#2A2214;
    --muted:#5A4A30;
    --quiet:#7A6848;
    --darkgold:#8A6A28;
    --copper:#C49A3C;
    --ink:#1C160C;
    --border:rgba(28,22,12,.12);
    --strong:rgba(138,106,40,.50);
    --shadow:0 12px 28px rgba(28,22,12,.08);
    --max:960px;
}
*{box-sizing:border-box}
html{overflow-x:hidden;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.overlay-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{display:block;max-width:100%}
button{cursor:pointer}
.shell{width:min(calc(100% - 32px),var(--max));margin:auto}
.skip-link{position:fixed;left:16px;top:-60px;z-index:9999;background:var(--ink);color:var(--copper);padding:8px 12px;border-radius:4px}
.skip-link:focus{top:8px}
.fixed-head{position:fixed;z-index:1000;left:0;right:0;top:0;box-shadow:0 5px 18px rgba(28,22,12,.07)}
.gold-edge{height:20px;background:var(--ink);color:var(--copper);font-size:12px}
.gold-edge-inner{height:20px;display:flex;align-items:center;justify-content:space-between}
.search-open{border:0;background:transparent;color:var(--copper);min-width:44px;height:20px}
.dark-head{height:54px;background:var(--paper);border-bottom:1px solid var(--strong)}
.dark-head-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand-home{min-height:44px;display:flex;align-items:center}
.brand-logo{height:24px;width:auto;max-width:170px;object-fit:contain;object-position:left center}
.brand-fallback{font-size:16px;font-weight:900;color:var(--ink)}
.head-actions{display:flex;gap:8px}
.app-link,.box-open,.panel-close,.btn-main,.btn-ghost{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;font-size:14px;font-weight:900;border-radius:4px;white-space:nowrap}
.app-link{background:var(--paper);border:1px solid var(--darkgold)}
.box-open{background:var(--ink);color:var(--copper);border:1px solid var(--ink)}
.needle-nav{height:44px;background:var(--paper);border-bottom:1px solid var(--border)}
.needle-nav-inner{height:44px;display:flex;justify-content:center;align-items:center;gap:30px}
.needle-nav a{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:900}
.needle{display:block;width:3px;height:22px;background:var(--ink)}
.needle-nav a.is-active .needle{background:var(--copper)}
.site-main{padding-top:140px;min-height:65vh}
.page,.article{width:min(calc(100% - 32px),var(--max));margin:0 auto 24px}
h1,h2,h3{margin:0;color:var(--title);line-height:1.3}
h1{font-size:24px;margin-bottom:12px}
h2{font-size:20px;margin-bottom:10px}
h3{font-size:16px;margin-bottom:8px}
p{margin:0 0 13px}
.small-label{font-size:12px;font-weight:900;color:var(--darkgold);letter-spacing:.08em}
.lead{font-size:16px;color:var(--muted)}
.paper{background:var(--paper);border:1px solid var(--border);box-shadow:var(--shadow)}
.media{background:var(--paper);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden}
.media img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-176{height:176px}.media-200{height:200px}.media-app{height:320px}
.intro{padding:22px;background:var(--paper);border:1px solid var(--border);box-shadow:var(--shadow)}
.home-needles{display:flex;gap:28px;margin-bottom:18px}
.home-needles a{display:flex;align-items:center;gap:8px;font-weight:900}
.home-needles i{display:block;width:3px;height:22px;background:var(--ink)}
.home-needles a:first-child i{background:var(--copper)}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.btn-main{background:linear-gradient(135deg,#1C160C 0%,#C49A3C 100%);color:var(--paper);border:1px solid var(--ink)}
.btn-ghost{background:var(--paper);color:var(--ink);border:1px solid var(--darkgold)}
.btn-main:hover,.btn-ghost:hover,.app-link:hover,.box-open:hover{box-shadow:var(--shadow);transform:translateY(-1px)}
.section-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:14px}
.section-head p{max-width:620px;color:var(--muted);margin:0}
.open-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.open-card{padding:18px;background:var(--paper);border:1px solid var(--border)}
.open-card .media{margin-bottom:14px}
.single-record{display:grid;gap:12px}
.single-record article{padding:18px;background:var(--paper);border-left:4px solid var(--darkgold)}
.fold-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fold-card{position:relative;padding:18px 48px 18px 18px;background:var(--paper);border:1px solid var(--border)}
.fold-card:after{content:"";position:absolute;top:0;right:0;width:30px;height:30px;background:linear-gradient(225deg,var(--bg) 49%,var(--copper) 50%)}
.center-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.center-cards article{padding:20px;background:var(--paper);border:1px solid var(--border);text-align:center}
.period-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.period-grid article{padding:18px;background:var(--paper);border-top:3px solid var(--darkgold)}
.status-list{display:grid;gap:12px}
.status-list article{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:18px;background:var(--paper);border:1px solid var(--border)}
.badge{display:inline-flex;justify-content:center;padding:6px 10px;background:var(--ink);color:var(--copper);font-weight:900}
.app-split{display:grid;grid-template-columns:320px 1fr;gap:22px;align-items:center}
.app-left{text-align:center}
.app-icon{width:48px;height:48px;object-fit:contain;margin:0 auto 10px}
.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.method-grid article{padding:18px;background:var(--paper);border:1px solid var(--border)}
.faq-six{display:grid;gap:10px}
.faq-six article{padding:16px;background:var(--paper);border-left:3px solid var(--copper)}
.article-title{padding:22px;background:var(--paper);border:1px solid var(--border);margin-bottom:16px}
.article-title p{color:var(--muted)}
.prose{display:grid;gap:14px}
.prose section{padding:18px;background:var(--paper);border:1px solid var(--border)}
.index-list{display:grid;gap:12px;counter-reset:n}
.index-list section{counter-increment:n;position:relative;padding:18px 18px 18px 60px;background:var(--paper);border:1px solid var(--border)}
.index-list section:before{content:counter(n,decimal-leading-zero);position:absolute;left:16px;top:18px;font-size:18px;font-weight:900;color:var(--darkgold)}
.right-text-left-image{display:grid;grid-template-columns:320px 1fr;gap:20px;align-items:start}
.check-list{display:grid;gap:12px;counter-reset:c}
.check-list section{counter-increment:c;position:relative;padding:18px 18px 18px 58px;background:var(--paper);border:1px solid var(--border)}
.check-list section:before{content:counter(c,decimal-leading-zero);position:absolute;left:15px;top:16px;width:30px;height:30px;display:flex;align-items:center;justify-content:center;background:var(--copper);color:var(--ink);font-weight:900}
.topic-list{display:grid;gap:12px}
.topic-list article{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:18px;background:var(--paper);border:1px solid var(--border)}
.centered{max-width:760px;margin:0 auto;display:grid;gap:14px}
.centered section{text-align:center;padding:20px;background:var(--paper);border:1px solid var(--border)}
.term-layout{display:grid;gap:14px}
.term-layout section{padding:18px;background:var(--paper);border-left:3px solid var(--darkgold)}
.faq-list{display:grid;gap:12px}
.faq-item{padding:18px;background:var(--paper);border:1px solid var(--border)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-grid section{padding:18px;background:var(--paper);border:1px solid var(--border)}
.brand-banner{height:200px;margin-bottom:16px}
.brand-banner img{max-height:200px}
.site-footer{margin-top:42px;background:var(--ink);color:var(--bg);border-top:1px solid var(--copper);padding:36px 0 74px;font-size:13px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer-brand div{display:flex;flex-direction:column}
.footer-brand strong{color:var(--copper);font-size:16px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
.footer-grid h2{font-size:14px;color:var(--copper)}
.footer-grid a{display:block;padding:4px 0}
.footer-note{padding-top:18px;border-top:1px solid rgba(196,154,60,.28)}
.copyright{color:#D6C7A7}
.page-mask{position:fixed;inset:0;z-index:1200;background:rgba(28,22,12,.58);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.page-mask.is-open{opacity:1;visibility:visible;pointer-events:auto}
.gold-box{position:fixed;z-index:1300;left:50%;bottom:16px;transform:translate(-50%,120%);width:280px;max-height:340px;overflow:auto;background:var(--paper);border:1px solid var(--darkgold);box-shadow:0 14px 34px rgba(28,22,12,.2);visibility:hidden;pointer-events:none;transition:.22s}
.gold-box.is-open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}
.gold-box-head{position:sticky;top:0;background:var(--paper);z-index:2;display:flex;align-items:center;justify-content:space-between;padding:12px;border-bottom:1px solid var(--border)}
.gold-box-brand{display:flex;align-items:center;gap:8px}
.panel-close{background:var(--paper);border:1px solid var(--darkgold)}
.gold-box-body{padding:10px}
.gold-box-body section{padding:8px 0;border-bottom:1px solid var(--border)}
.gold-box-body section:last-child{border-bottom:0}
.gold-box-body h2{font-size:14px}
.gold-box-body a{display:block;padding:7px 0}
.gold-box-body strong,.gold-box-body span{display:block}
.gold-box-body span{font-size:12px;color:var(--muted);margin-top:2px}
.search-layer{position:fixed;z-index:1350;left:0;right:0;top:74px;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:.2s}
.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.search-card{width:min(calc(100% - 32px),680px);margin:auto;background:var(--paper);border:1px solid var(--darkgold);padding:18px;box-shadow:var(--shadow)}
.search-head{display:flex;justify-content:space-between;gap:12px;align-items:start}
.search-card input{width:100%;height:44px;border:1px solid var(--darkgold);background:#fff;padding:0 12px}
.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.search-presets a{padding:7px 10px;background:var(--darkgold);color:var(--paper);font-weight:900}
.mobile-bottom{display:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--copper);outline-offset:3px}

@media(max-width:760px){
    .needle-nav{display:none}
    .site-main{padding-top:100px}
    .open-pair,.fold-pair,.center-cards,.period-grid,.method-grid,.contact-grid{grid-template-columns:1fr}
    .app-split,.right-text-left-image{grid-template-columns:1fr}
    .status-list article,.topic-list article{grid-template-columns:1fr}
    .gold-box{width:88%;max-height:340px}
    .footer-grid{grid-template-columns:1fr 1fr}
    body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}
    .mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:1100;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--darkgold)}
    .mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900}
    .mobile-bottom a.is-active{background:var(--darkgold);color:var(--paper)}
    .search-layer{inset:0;background:var(--ink);transform:none}
    .search-card{width:100%;min-height:100vh;border:0;background:var(--ink);color:var(--copper);padding:24px 16px}
    .search-card h2,.search-card .small-label{color:var(--copper)}
    .search-card .panel-close{background:transparent;color:var(--copper);border-color:var(--copper)}
    .site-footer{padding-bottom:76px}
}
@media(max-width:480px){
    .footer-grid{grid-template-columns:1fr}
    .brand-logo{max-width:120px}
    .app-link,.box-open{padding:0 10px;font-size:13px}
}