:root{
  --ink:#0B0E12; --graphite:#131820; --graphite2:#1B212C; --line:#2A323F;
  --safety:#F2B91D; --safety-d:#caa015; --paper:#F4F5F3; --muted:#9AA6B2;
  --text:#E8ECF1; --text2:#B7C0CB; --radius:3px; --maxw:1180px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--ink);color:var(--text);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.para{color:var(--text2);margin:0 0 14px}
.meta{color:var(--muted);font-size:13px;margin-top:8px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,14,18,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;background:var(--safety);color:var(--ink);font-weight:900;border-radius:var(--radius);letter-spacing:1px}
.brand-text{font-size:16px;letter-spacing:.5px}
.site-nav{display:flex;gap:22px}
.site-nav a{color:var(--text2);font-size:14px;padding:6px 0;border-bottom:2px solid transparent;transition:.2s}
.site-nav a:hover,.site-nav a.active{color:#fff;border-color:var(--safety)}
.header-cta{background:var(--safety);color:var(--ink);font-weight:700;padding:8px 14px;border-radius:var(--radius);font-size:13px}
.header-cta:hover{background:#ffc733}

/* eyebrow */
.eyebrow{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}
.eyebrow .en{color:var(--safety);font-weight:800;letter-spacing:2px;font-size:12px}
.eyebrow .zh{color:var(--muted);font-size:13px;letter-spacing:1px}
.eyebrow.sm .en{font-size:11px}

/* hero */
.hero{position:relative;height:560px;overflow:hidden;background:var(--graphite)}
#hero-3d{position:absolute;inset:0;z-index:1;perspective:900px;overflow:hidden;opacity:.5}
.scene3d{position:absolute;left:50%;top:54%;width:0;height:0;transform-style:preserve-3d;animation:spin3d 26s linear infinite}
.panel{position:absolute;width:120px;height:120px;margin:-60px 0 0 -60px;background:linear-gradient(135deg,rgba(242,185,29,.18),rgba(40,48,60,.5));border:1px solid rgba(242,185,29,.35);transform-style:preserve-3d}
@keyframes spin3d{from{transform:translateZ(-200px) rotateX(60deg) rotateZ(0)}to{transform:translateZ(-200px) rotateX(60deg) rotateZ(360deg)}}
.carousel{position:absolute;inset:0;z-index:2}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .7s ease;background-size:cover;background-position:center;display:flex;align-items:center}
.slide.active{opacity:1}
.slide-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;width:100%}
.slide h2{font-size:40px;margin:0 0 12px;font-weight:900;letter-spacing:1px;text-shadow:0 2px 18px rgba(0,0,0,.6)}
.slide-sub{font-size:20px;color:var(--safety);font-weight:700;margin:0 0 8px}
.slide-desc{color:var(--paper);font-size:16px;margin:0 0 18px;max-width:560px}
.carousel-nav{position:absolute;z-index:4;bottom:24px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:14px}
.cbtn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:rgba(11,14,18,.6);color:#fff;font-size:20px;cursor:pointer}
.cbtn:hover{border-color:var(--safety);color:var(--safety)}
.cdots{display:flex;gap:8px}
.cdots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.35);cursor:pointer;display:block}
.cdots i.on{background:var(--safety)}

/* fact strip */
.factstrip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);margin-top:-1px;border-bottom:1px solid var(--line)}
.fact{background:var(--graphite);padding:18px 20px}
.fact-k{color:var(--muted);font-size:12px;letter-spacing:1px}
.fact-v{color:#fff;font-weight:700;margin-top:4px;font-size:15px}

/* sections */
.section{padding:64px 0}
.section-title{font-size:28px;font-weight:900;margin:6px 0 28px;letter-spacing:.5px}
.page-hero{padding:54px 0 22px;background:linear-gradient(180deg,var(--graphite),var(--ink))}
.page-title{font-size:34px;font-weight:900;margin:6px 0 12px;letter-spacing:.5px}
.page-lead{color:var(--text2);max-width:720px;font-size:16px}

/* value cards */
.vgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.vcard{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.2s}
.vcard:hover{border-color:var(--safety);transform:translateY(-3px)}
.vicon{width:40px;height:40px;border-radius:var(--radius);background:rgba(242,185,29,.12);color:var(--safety);display:grid;place-items:center;font-weight:800;margin-bottom:12px}
.vcard h3{margin:0 0 8px;font-size:17px}
.vcard p{color:var(--text2);font-size:14px;margin:0}

/* service grid */
.sgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scard{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.scard:hover{border-color:var(--safety);transform:translateY(-3px);box-shadow:var(--shadow)}
.scard-img{height:170px;width:100%;object-fit:cover;display:block}
.scard-body{padding:18px;flex:1;display:flex;flex-direction:column}
.scard-body h3{margin:6px 0 8px;font-size:18px}
.scard-body p{color:var(--text2);font-size:14px;margin:0 0 12px;flex:1}
.more{color:var(--safety);font-weight:700;font-size:14px}

/* buttons */
.btn-primary{display:inline-block;background:var(--safety);color:var(--ink);font-weight:800;padding:12px 22px;border-radius:var(--radius)}
.btn-primary:hover{background:#ffc733}
.btn-ghost{display:inline-block;border:1px solid var(--line);color:var(--text);padding:11px 20px;border-radius:var(--radius);font-weight:700;margin-top:18px}
.btn-ghost:hover{border-color:var(--safety);color:var(--safety)}
.btn-primary.block,.btn-ghost.block{display:block;text-align:center;margin-top:10px}

/* cta band */
.cta-band{background:linear-gradient(180deg,var(--graphite2),var(--graphite));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-inner{text-align:center}
.cta-inner h2{font-size:26px;margin:0 0 10px}
.cta-inner p{color:var(--text2);margin:0 0 18px}

/* faq */
.faq-wrap{display:grid;gap:26px}
.faq-group-h{font-size:18px;color:var(--safety);border-left:3px solid var(--safety);padding-left:10px;margin:0 0 8px}
.faq-item{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:8px;padding:0 16px}
.faq-item summary{cursor:pointer;padding:14px 0;font-weight:700;list-style:none;display:flex;justify-content:space-between}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--safety);font-size:20px}
.faq-item[open] summary::after{content:"−"}
.faq-a{color:var(--text2);padding:0 0 14px;font-size:14px}
/* faq category nav */
.faq-nav{position:sticky;top:62px;z-index:40;background:rgba(11,14,18,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.faq-nav-inner{display:flex;flex-wrap:wrap;gap:8px;padding:12px 0;align-items:center}
.faq-nav-label{color:var(--muted);font-size:12px;font-weight:700;margin-right:4px;white-space:nowrap}
.faq-nav-chip{display:inline-flex;align-items:center;gap:6px;background:var(--graphite);border:1px solid var(--line);
  color:var(--text2);font-size:13px;padding:5px 11px;border-radius:20px;transition:.18s;white-space:nowrap}
.faq-nav-chip:hover{border-color:var(--safety);color:#fff;background:var(--graphite2)}
.faq-nav-chip em{font-style:normal;color:var(--safety);font-size:11px;font-weight:700}
.faq-nav-chip.active{background:var(--safety);color:#0b0e12;border-color:var(--safety);font-weight:700}
.faq-nav-chip.active em{color:#0b0e12;opacity:.75}
/* faq cards */
.faq-group{scroll-margin-top:130px}
.faq-group-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:6px}
.faq-group-n{color:var(--muted);font-size:12px;white-space:nowrap}
.faq-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px;margin-bottom:22px}
.faq-card{display:block;background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;transition:.18s}
.faq-card:hover{border-color:var(--safety);background:var(--graphite2);transform:translateY(-2px)}
.faq-card h4{margin:0 0 8px;font-size:15px;line-height:1.5;color:#fff;font-weight:700}
.faq-card p{margin:0;color:var(--text2);font-size:13.5px;line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.faq-card.sm{padding:13px 15px}
.faq-card.sm h4{font-size:14px;margin:0 0 6px}
.faq-more{display:inline-block;margin-top:10px;color:var(--safety);font-size:13px;font-weight:700}
/* faq detail */
.article-head{padding:36px 20px 6px;max-width:900px}
.article-head .page-title{margin-top:12px}
.cta-inline{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  margin:34px 0 10px;padding:20px 22px;background:var(--graphite);border:1px solid var(--line);
  border-left:3px solid var(--safety);border-radius:var(--radius)}
.cta-inline strong{display:block;color:#fff;font-size:16px;margin-bottom:4px}
.cta-inline span{color:var(--text2);font-size:14px}
.related{padding:0 20px 40px}
.related-h{font-size:18px;color:var(--safety);border-left:3px solid var(--safety);padding-left:10px;margin:0 0 14px}
.faq-pager{display:flex;justify-content:space-between;gap:16px;padding:0 20px 60px;max-width:var(--maxw)}
.pager{color:var(--text2);font-size:13.5px;max-width:46%;transition:.18s}
.pager:hover{color:var(--safety)}
.pager.next{text-align:right}
@media(max-width:720px){
  .faq-nav{position:static}
  .faq-cards{grid-template-columns:1fr}
  .faq-pager{flex-direction:column}
  .pager{max-width:100%}
  .pager.next{text-align:left}
}

/* articles/news grid */
.agrid,.ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.acard,.ncard{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.acard:hover,.ncard:hover{border-color:var(--safety);transform:translateY(-3px);box-shadow:var(--shadow)}
.acard-img,.ncard-img{height:160px;width:100%;object-fit:cover;display:block}
.acard-body,.ncard-body{padding:16px;flex:1;display:flex;flex-direction:column}
.acard-body h3,.ncard-body h3{font-size:17px;margin:8px 0 8px;line-height:1.4}
.acard-body p,.ncard-body p{color:var(--text2);font-size:13.5px;margin:0 0 10px;flex:1}
.tag{display:inline-block;background:rgba(242,185,29,.14);color:var(--safety);font-size:12px;padding:3px 9px;border-radius:20px;font-weight:700;align-self:flex-start}
.tag.warn{background:rgba(120,170,255,.16);color:#9cc0ff}
.ncard.clarify{border-color:rgba(120,170,255,.4)}

/* detail */
.detail-hero,.article-cover{padding:60px 0;background-size:cover;background-position:center}
.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:30px;align-items:start}
.block-h{font-size:18px;margin:24px 0 10px;color:#fff}
.chip-list{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.chip-list li{background:var(--graphite2);border:1px solid var(--line);padding:6px 12px;border-radius:20px;font-size:13px}
.step-list{list-style:none;padding:0;margin:0;counter-reset:s}
.step-list li{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.step-n{width:26px;height:26px;background:var(--safety);color:var(--ink);border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:13px;flex:none}
.boundary{background:rgba(242,185,29,.08);border:1px solid rgba(242,185,29,.3);border-radius:var(--radius);padding:12px 14px;font-size:13.5px;color:var(--text2);margin-top:18px}
.tick-list{padding-left:18px;color:var(--text2);font-size:14px}
.detail-aside{position:sticky;top:80px}
.aside-card{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.aside-h{font-size:15px;font-weight:700;margin-bottom:12px}

.article-body{max-width:780px;padding:40px 20px 60px}
.art-h2{font-size:22px;margin:28px 0 10px;color:#fff}
.art-ul{padding-left:20px;color:var(--text2)}
.art-ul li{margin:6px 0}
.refs{margin-top:30px;padding:16px;background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius)}
.refs-h{color:var(--safety);font-weight:700;margin-bottom:8px}
.refs ul{padding-left:18px;color:var(--muted);font-size:13px}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.entity-card{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.entity-h{font-size:18px;font-weight:800;margin-bottom:14px;color:var(--safety)}
.entity-dl{display:grid;grid-template-columns:auto 1fr;gap:10px 16px;margin:0}
.entity-dl dt{color:var(--muted);font-size:13px;white-space:nowrap}
.entity-dl dd{margin:0;font-size:14px}

/* inquiry form */
.inquiry{background:linear-gradient(180deg,var(--graphite2),var(--graphite));border-top:1px solid var(--line)}
.inquiry .wrap{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.form-card{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.form-card label{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px}
.form-card input,.form-card select,.form-card textarea{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:var(--radius);color:#fff;padding:10px 12px;font-size:14px;font-family:inherit}
.form-card textarea{resize:vertical;min-height:70px}
.form-card .ok{color:#7ee0a0;font-size:13px;margin-top:10px;display:none}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--graphite);margin-top:30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;padding:40px 20px 20px}
.footer-brand{font-weight:800;font-size:17px}
.footer-slogan{color:var(--text2);font-size:14px;margin:8px 0 0;max-width:360px}
.footer-h{color:var(--safety);font-weight:700;margin-bottom:8px;font-size:14px}
.footer-links{display:flex;flex-direction:column;gap:6px}
.footer-links a{color:var(--text2);font-size:14px}
.footer-links a:hover{color:var(--safety)}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:16px 20px;border-top:1px solid var(--line);color:var(--muted);font-size:12.5px}
.footer-bottom a{color:var(--safety)}

/* admin */
.admin-wrap{max-width:1100px;margin:0 auto;padding:24px}
.admin-login{max-height:420px;max-width:360px;margin:80px auto;background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.admin-login h2{margin:0 0 14px}
.admin-login input{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:var(--radius);color:#fff;padding:10px 12px;margin-bottom:12px}
.dash{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:24px}
.stat{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat b{font-size:26px;color:var(--safety);display:block}
.stat span{color:var(--muted);font-size:12.5px}
.admin-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.panel{background:var(--graphite);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.panel h3{margin:0 0 12px;font-size:16px}
.admin-table{width:100%;border-collapse:collapse;font-size:13px}
.admin-table th,.admin-table td{border-bottom:1px solid var(--line);padding:8px;text-align:left;color:var(--text2)}
.admin-table th{color:var(--muted)}
.btn-sm{background:var(--safety);color:var(--ink);border:none;padding:6px 12px;border-radius:var(--radius);font-weight:700;cursor:pointer;font-size:12.5px}
.btn-sm.alt{background:transparent;border:1px solid var(--line);color:var(--text)}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--safety);color:var(--ink);padding:10px 18px;border-radius:var(--radius);font-weight:700;opacity:0;transition:.3s;pointer-events:none}
.toast.show{opacity:1}
.editor label{display:block;font-size:12.5px;color:var(--muted);margin:10px 0 4px}
.editor input,.editor textarea,.editor select{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:var(--radius);color:#fff;padding:8px 10px;font-family:inherit;font-size:13px}
.editor textarea{min-height:90px}

/* responsive */
@media(max-width:900px){
  .vgrid,.sgrid,.agrid,.ngrid{grid-template-columns:repeat(2,1fr)}
  .factstrip{grid-template-columns:repeat(2,1fr)}
  .detail-grid,.about-grid,.inquiry .wrap,.admin-cols{grid-template-columns:1fr}
  .dash{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .site-nav{display:none}
  .slide h2{font-size:28px}
  .slide-sub{font-size:16px}
  .hero{height:480px}
}
@media(max-width:560px){
  .vgrid,.sgrid,.agrid,.ngrid{grid-template-columns:1fr}
  .dash{grid-template-columns:repeat(2,1fr)}
  .page-title{font-size:26px}
}

/* FAQ 分页（静态 URL，利于爬虫遍历全部问答） */
.pager-nav{display:flex;align-items:center;justify-content:center;gap:14px;margin:30px 0 10px;flex-wrap:wrap}
.pager,.pager-num,.pager-cur{padding:7px 13px;border:1px solid var(--line);border-radius:8px;color:var(--paper);font-size:14px}
.pager-num:hover,.pager:hover{border-color:var(--safety);color:var(--safety)}
.pager-cur{background:var(--safety);color:#0B0E12;border-color:var(--safety);font-weight:700}
.pager.disabled{opacity:.4;pointer-events:none}
.pager-nums{display:flex;gap:6px;flex-wrap:wrap}
picture{display:block}
@media(prefers-reduced-motion:reduce){.scene3d{animation:none}}

/* ICP 备案 / 域名展示 */
.footer-icp a{color:var(--text2);text-decoration:none;border-bottom:1px solid var(--line);transition:color .2s,border-color .2s}
.footer-icp a:hover{color:var(--safety);border-bottom-color:var(--safety)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.2px}
.dim{color:var(--muted);font-size:.92em}
.entity-dl dd a{color:var(--text2);text-decoration:none;border-bottom:1px dashed var(--line)}
.entity-dl dd a:hover{color:var(--safety);border-bottom-color:var(--safety)}

/* 面包屑导航（收录与可用性） */
.crumb{font-size:13px;line-height:1.6;color:var(--muted);margin:0 auto 22px;max-width:var(--maxw);padding:22px 20px 0;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{color:var(--muted);text-decoration:none;transition:color .18s}
.crumb a:hover{color:var(--safety)}
.crumb-sep{color:var(--line);margin:0 2px}
.crumb-cur{color:var(--text2);font-weight:600}
@media(max-width:560px){.crumb{font-size:12px;padding:16px 14px 0;margin-bottom:16px}}