:root{
    --page:#F4EDE0;
    --deep:#E4D6C0;
    --paper:#FBF6EC;
    --sub:#EDE3D0;
    --title:#1C160C;
    --text:#2A2214;
    --muted:#5A4A30;
    --soft:#7A6848;
    --darkgold:#8A6A28;
    --copper:#C49A3C;
    --ink:#1C160C;
    --border:rgba(28,22,12,.12);
    --border-strong:rgba(138,106,40,.50);
    --shadow:0 12px 28px rgba(28,22,12,.08);
    --max:960px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--page);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.modal-open{overflow:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--copper);outline-offset:3px}
.shell{width:min(var(--max),calc(100% - 32px));margin:auto}
.site-header{position:fixed;inset:0 0 auto 0;z-index:60}
.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}
.edge-search{border:0;background:transparent;color:var(--copper);font-size:12px;font-weight:800;padding:0 6px}
.dark-head{height:54px;background:var(--paper);border-bottom:1px solid var(--border-strong)}
.dark-head-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-home{display:flex;align-items:center;min-height:44px}
.brand-logo,.footer-logo,.box-logo{height:24px;width:auto;max-width:160px;object-fit:contain;object-position:left center}
.brand-fallback{font-size:16px;font-weight:900;color:var(--title)}
.head-actions{display:flex;align-items:center;gap:8px}
.app-link,.box-open,.button-main,.button-alt{min-height:42px;padding:8px 14px;border-radius:3px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:900;white-space:nowrap}
.app-link,.button-main{background:linear-gradient(135deg,#1C160C 0%,#C49A3C 100%);color:var(--paper);border:1px solid var(--ink)}
.box-open,.button-alt{background:var(--paper);color:var(--title);border:1px solid var(--darkgold)}
.needle-nav{height:44px;background:var(--paper);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center;gap:54px}
.needle-nav a{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:900;min-height:36px}
.needle-mark{display:block;width:3px;height:22px;background:var(--ink)}
.needle-nav a.is-current .needle-mark{background:var(--copper)}
.site-main{padding:140px 0 56px}
.page-shell{width:min(var(--max),calc(100% - 32px));margin:auto}
h1,h2,h3{color:var(--title);line-height:1.3;margin-top:0}
h1{font-size:24px;margin-bottom:13px}
h2{font-size:20px;margin-bottom:10px}
h3{font-size:16px;margin-bottom:8px}
p{margin:0 0 14px}
.eyebrow{display:inline-block;font-size:12px;color:var(--darkgold);font-weight:900;letter-spacing:.08em;margin-bottom:8px}
.lead{color:var(--muted);max-width:760px}
.page-hero{padding:24px;background:var(--paper);border:1px solid var(--border);border-radius:4px;box-shadow:var(--shadow);margin-bottom:22px}
.section{margin:22px 0;padding:24px;background:var(--paper);border:1px solid var(--border);border-radius:4px}
.section.dark{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.section.dark h2,.section.dark h3{color:var(--copper)}
.section.dark p,.section.dark li{color:var(--paper)}
.media-slot,.split-image,.about-banner,.app-visual,.icon-slot{background:var(--paper);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:3px}
.media-slot{height:196px}
.split-image{height:176px}
.about-banner{height:200px}
.app-visual{height:320px;max-width:320px}
.icon-slot{width:64px;height:64px;margin-bottom:12px}
.media-slot img,.split-image img,.about-banner img,.app-visual img,.icon-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.icon-slot img{width:48px;height:48px}
.home-needle-index{display:flex;gap:36px;margin-bottom:16px}
.home-needle-index a{display:flex;align-items:center;gap:8px;font-weight:900}
.home-needle-index i{display:block;width:3px;height:22px;background:var(--copper)}
.hero-copy{padding:8px 0 24px}
.hero-copy .main-line{font-size:22px;font-weight:900;color:var(--title);margin:4px 0 10px}
.link-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.split-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}
.split-card{padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:3px}
.single-record{display:grid;gap:14px;margin:22px 0}
.record-item{padding:20px;background:var(--paper);border-left:4px solid var(--darkgold);border-radius:0 3px 3px 0}
.fold-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}
.fold-card{padding:20px;background:var(--sub);border:1px solid var(--border);clip-path:polygon(0 0,100% 0,100% 84%,92% 100%,0 100%)}
.center-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}
.center-card{text-align:center;padding:24px;background:var(--paper);border:1px solid var(--border);border-radius:3px}
.period-list{display:grid;gap:0}
.period-row{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--border)}
.period-row:last-child{border-bottom:0}
.period-name{font-size:18px;font-weight:900;color:var(--darkgold)}
.status-list{display:grid;gap:12px}
.status-row{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:16px 18px;background:var(--paper);border:1px solid var(--border);border-radius:3px}
.status-badge{display:inline-flex;min-height:30px;align-items:center;justify-content:center;padding:4px 9px;background:var(--darkgold);color:var(--paper);font-weight:900;border-radius:2px}
.app-split{display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:center}
.memo-list{display:grid;gap:12px}
.memo-item{padding:18px 20px;background:var(--paper);border:1px solid var(--border);border-left:4px solid var(--copper);border-radius:0 3px 3px 0}
.method-list{display:grid;gap:14px}
.method-item{display:grid;grid-template-columns:64px 1fr;gap:15px;padding:18px;background:var(--paper);border:1px solid var(--border);border-radius:3px}
.method-no{height:58px;background:var(--ink);color:var(--copper);display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:900}
.topic-list,.article-list,.faq-list,.term-sections{display:grid;gap:14px}
.topic-item,.article-item,.faq-item,.term-sections section{padding:20px;background:var(--paper);border:1px solid var(--border);border-radius:3px}
.topic-meta{font-size:12px;color:var(--soft);font-weight:800}
.faq-item h2{font-size:17px}
.check-list{padding-left:20px;margin:0}
.check-list li{margin:7px 0}
.site-footer{background:var(--ink);color:var(--page);border-top:1px solid var(--copper);padding:40px 0 88px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.footer-brand strong{display:block;color:var(--copper);font-size:16px}
.footer-brand span{display:block;font-size:12px}
.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.footer-groups h2{font-size:14px;color:var(--copper)}
.footer-groups a{display:block;padding:4px 0;font-size:13px}
.footer-note{font-size:13px;color:var(--page);margin-top:20px}
.page-mask{position:fixed;inset:0;background:rgba(28,22,12,.48);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.page-mask.is-active{opacity:1;visibility:visible;pointer-events:auto}
.gold-box{position:fixed;left:50%;bottom:18px;transform:translate(-50%,110%);width:280px;max-height:340px;overflow:auto;background:var(--page);border:1px solid var(--darkgold);z-index:90;box-shadow:var(--shadow);visibility:hidden;pointer-events:none;transition:.25s}
.gold-box.is-open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}
.gold-box-head{position:sticky;top:0;background:var(--page);border-bottom:1px solid var(--border);padding:12px;display:flex;align-items:center;justify-content:space-between;z-index:2}
.gold-box-brand{display:flex;align-items:center;gap:8px}
.close-button{min-width:44px;min-height:42px;background:var(--paper);border:1px solid var(--darkgold);color:var(--title);font-weight:900;border-radius:3px}
.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;margin-bottom:6px}
.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)}
.search-panel{position:fixed;left:0;right:0;top:74px;z-index:95;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:.2s}
.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
.search-card{width:min(680px,calc(100% - 32px));margin:auto;padding:18px;background:var(--paper);border:1px solid var(--darkgold);box-shadow:var(--shadow)}
.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.search-card label{display:block;font-weight:900;margin-bottom:8px}
.search-card input{width:100%;min-height:44px;border:1px solid var(--darkgold);background:#fff;padding:0 12px;border-radius:2px}
.search-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.search-links a{min-height:38px;padding:7px 10px;border:1px solid var(--darkgold);display:inline-flex;align-items:center;font-weight:900}
.mobile-bottom{display:none}
@media(max-width:760px){
    .needle-nav{display:none}
    .site-main{padding-top:96px;padding-bottom:78px}
    .dark-head-inner{gap:8px}
    .brand-logo{max-width:116px}
    .app-link,.box-open{padding:8px 9px;font-size:13px;min-height:44px}
    .split-cards,.fold-pair,.center-cards,.app-split{grid-template-columns:1fr}
    .app-visual{margin:auto}
    .period-row,.status-row,.method-item{grid-template-columns:1fr}
    .footer-groups{grid-template-columns:1fr 1fr}
    .gold-box{width:88%;max-height:340px}
    .search-panel{inset:0;top:0;background:var(--ink);padding:16px}
    .search-card{width:100%;height:100%;overflow:auto;background:var(--ink);color:var(--page);border-color:var(--copper)}
    .search-head strong,.search-card label{color:var(--copper)}
    .search-card .close-button{background:transparent;color:var(--copper);border-color:var(--copper)}
    .search-links a{background:var(--copper);color:var(--ink);border-color:var(--copper)}
    .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:65;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border-top:1px solid var(--darkgold)}
    .mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900}
    .mobile-bottom a.is-current{background:var(--darkgold);color:var(--paper)}
}