/* roulang page: index */
:root{
  --primary:#1D5FD0;
  --primary-dark:#16489F;
  --primary-soft:#EAF1FD;
  --primary-line:#CFE0F8;
  --accent:#17A2A6;
  --tertiary:#E0A03C;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --footer-bg:#0C1E3A;
  --text:#33415A;
  --heading:#16202E;
  --muted:#5E6E85;
  --line:#E3E9F2;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 8px 28px rgba(16,42,90,.08);
  --shadow-hover:0 16px 36px rgba(16,42,90,.14);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--heading);font-weight:700;letter-spacing:-.01em}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.28)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ---------- header ---------- */
.site-header{position:relative;z-index:60}
.topbar{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:40px;gap:16px}
.topbar-inner .t-left{display:flex;align-items:center;gap:8px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar-dot{width:8px;height:8px;background:var(--accent);display:inline-block;flex:none}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-links a{color:var(--muted)}
.topbar-links a:hover{color:var(--primary)}
.mainnav{position:sticky;top:0;z-index:70;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease)}
.site-header.is-scrolled .mainnav{box-shadow:0 4px 20px rgba(16,42,90,.06)}
.mainnav-inner{display:flex;align-items:center;gap:20px;height:76px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:16px;color:var(--heading);font-weight:700;letter-spacing:-.01em}
.logo-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.02em}
.nav-search{display:flex;align-items:center;gap:6px;flex:1;max-width:560px;height:46px;padding-left:16px;padding-right:4px;background:#fff;border:1px solid var(--line);border-radius:999px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.nav-search:focus-within{border-color:var(--primary-line);box-shadow:0 0 0 3px rgba(29,95,208,.18)}
.nav-search svg{flex:none;color:var(--muted)}
.nav-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:14px;line-height:1.6}
.nav-search input::placeholder{color:#93A1B5}
.nav-search button{width:88px;height:38px;border:0;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;transition:background .2s var(--ease)}
.nav-search button:hover{background:var(--primary-dark)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;margin-left:auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--heading);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--heading)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.catbar{background:#fff;border-bottom:1px solid var(--line)}
.catbar-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none}
.catbar-inner::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;font-size:14px;color:var(--text);white-space:nowrap;border:1px solid transparent}
.chip:hover{color:var(--primary);background:var(--primary-soft)}
.chip.is-active{color:var(--primary);background:var(--primary-soft);border-color:var(--primary-line);font-weight:600}
.mobile-menu{display:none;background:#fff;border-bottom:1px solid var(--line);padding:16px 0 20px}
.mobile-menu .nav-search{max-width:none;margin-bottom:14px}
.mobile-links{display:grid;gap:2px;margin-bottom:14px}
.mobile-links a{padding:11px 4px;font-size:15px;border-bottom:1px solid var(--line);color:var(--text)}
.mobile-links a:hover{color:var(--primary)}
@media(max-width:1023px){
  .nav-search{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  body.menu-open .mobile-menu{display:block}
}
@media(max-width:520px){
  .topbar-inner .t-left{display:none}
  .mainnav-inner{height:68px;gap:12px}
  .logo-text em{display:none}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;transition:all .22s var(--ease)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);color:#fff}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary-line)}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:15px;font-weight:600;border-bottom:2px solid transparent;padding-bottom:2px}
.link-more svg{transition:transform .22s var(--ease)}
.link-more:hover{border-bottom-color:var(--primary)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- layout ---------- */
.section{padding:88px 0}
.section-alt{background:#fff}
.section-tight{padding:64px 0}
@media(max-width:1023px){.section{padding:64px 0}.section-tight{padding:48px 0}}
@media(max-width:520px){.section{padding:56px 0}}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
@media(max-width:1023px){
  .grid-12{grid-template-columns:1fr;gap:28px}
  .col-4,.col-5,.col-7,.col-8{grid-column:auto}
}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.04em;margin-bottom:14px}
.kicker::before{content:"";width:8px;height:8px;background:var(--accent);display:inline-block}
.h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700}
.section-desc{color:var(--muted);font-size:16px;margin-top:16px;max-width:36em}
.h3{font-size:19px;line-height:1.5;font-weight:600}
.title-bar{padding-left:14px;border-left:3px solid var(--primary)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:#F5F8FF;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-image:radial-gradient(#1D5FD0 1px,transparent 1px);background-size:24px 24px;opacity:.05;pointer-events:none}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding-top:72px;padding-bottom:80px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--primary-line);color:var(--primary);font-size:13px;font-weight:600}
.hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;letter-spacing:-.01em;margin-top:20px}
.hero-sub{font-size:17px;line-height:1.85;color:var(--muted);margin-top:20px;max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:0;margin-top:30px}
.trust-row li{position:relative;font-size:14px;color:var(--muted);padding:0 18px;line-height:1.6}
.trust-row li:first-child{padding-left:0}
.trust-row li+li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:14px;background:var(--line)}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.hero-chips a{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text)}
.hero-chips a:hover{border-color:var(--primary-line);color:var(--primary);background:var(--primary-soft)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.hero-badge{position:absolute;right:16px;bottom:-18px;background:var(--primary-soft);border:1px solid var(--primary-line);border-radius:14px;padding:12px 18px;display:flex;flex-direction:column;line-height:1.4}
.hero-badge strong{font-size:15px;color:var(--primary-dark)}
.hero-badge span{font-size:12px;color:var(--muted)}
@media(max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-top:52px;padding-bottom:64px}
  .hero-media{order:2}
  .hero-media img{aspect-ratio:16/9}
  .hero-badge{bottom:12px;right:12px}
}

/* ---------- service cards ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:640px){.svc-grid{grid-template-columns:1fr}}
.svc-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease)}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line)}
.svc-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.svc-card h3{font-size:19px;font-weight:600;color:var(--heading)}
.svc-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted)}
.svc-arrow{position:absolute;top:24px;right:24px;color:var(--primary-line);transition:color .22s var(--ease),transform .22s var(--ease)}
.svc-card:hover .svc-arrow{color:var(--primary);transform:translateX(3px)}

/* ---------- stats ---------- */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{padding:34px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat strong{display:block;font-size:clamp(34px,4vw,46px);line-height:1.1;color:var(--primary);font-weight:700;letter-spacing:-.02em}
.stat strong em{font-style:normal;font-size:18px;color:var(--primary);margin-left:4px}
.stat span{display:block;margin-top:10px;font-size:14px;color:var(--muted);line-height:1.6}
@media(max-width:1023px){
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .stat{border-left:1px solid var(--line);border-top:1px solid var(--line)}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(-n+2){border-top:0}
}
@media(max-width:520px){
  .stats-row{grid-template-columns:1fr}
  .stat{border-left:0;border-top:1px solid var(--line)}
  .stat:first-child{border-top:0}
}

/* ---------- news ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
@media(max-width:1023px){.news-grid{grid-template-columns:1fr}}
.news-lead{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:transform .28s var(--ease),box-shadow .28s var(--ease)}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-lead-media{aspect-ratio:16/9;overflow:hidden;background:var(--primary-soft)}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:26px}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1}
.badge-cat{background:var(--primary-soft);color:var(--primary)}
.badge-time{background:#F1F4F9;color:var(--muted)}
.badge-new{background:#FDF3E3;color:#A9721C}
.news-lead-title{font-size:21px;line-height:1.5;font-weight:600;margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-lead-desc{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--muted)}
.meta-row .meta-link{color:var(--primary);font-weight:600}
.side-list{display:grid;gap:16px;align-content:start}
.side-card{display:grid;grid-template-columns:128px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease)}
.side-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line)}
.side-thumb{aspect-ratio:16/11;border-radius:12px;overflow:hidden;background:var(--primary-soft)}
.side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.side-card:hover .side-thumb img{transform:scale(1.03)}
.side-title{font-size:16px;line-height:1.55;font-weight:600;color:var(--heading);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-meta{margin-top:8px;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
@media(max-width:520px){
  .side-card{grid-template-columns:1fr}
  .side-thumb{aspect-ratio:16/9}
}
.empty-state{border:1px dashed var(--line);border-radius:var(--radius);background:#fff;padding:56px 24px;text-align:center}
.empty-state svg{color:#B7C3D4;margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state .btn{margin-top:20px}

/* ---------- cases ---------- */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:34px 0;border-top:1px solid var(--line)}
.case-row:first-of-type{border-top:0;padding-top:0}
.case-num{display:inline-flex;align-items:center;justify-content:center;height:26px;padding:0 12px;border-radius:999px;background:#E6F6F6;color:#0F7C7F;font-size:13px;font-weight:600}
.case-img{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.case-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.case-row h3{font-size:23px;line-height:1.45;margin-top:16px}
.case-row p{margin-top:14px;color:var(--muted);font-size:15.5px}
.case-points{display:grid;gap:10px;margin-top:18px}
.case-points li{position:relative;padding-left:18px;font-size:15px;color:var(--text)}
.case-points li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;background:var(--primary-soft);border:1px solid var(--primary-line)}
@media(max-width:1023px){
  .case-row{grid-template-columns:1fr;gap:24px}
  .case-row.reverse .case-img{order:-1}
}

/* ---------- plan list ---------- */
.plan-list{border-top:1px solid var(--line)}
.plan-item{display:grid;grid-template-columns:64px 1fr 40px;align-items:center;gap:20px;padding:26px 20px;border-bottom:1px solid var(--line);transition:background-color .24s var(--ease),transform .24s var(--ease)}
.plan-item:hover{background:var(--primary-soft);transform:translateX(4px)}
.plan-no{font-size:22px;font-weight:700;color:var(--primary);letter-spacing:-.02em}
.plan-item h3{font-size:19px;font-weight:600}
.plan-item p{margin-top:6px;font-size:15px;color:var(--muted)}
.plan-arrow{color:var(--primary-line);display:flex;justify-content:flex-end}
.plan-item:hover .plan-arrow{color:var(--primary)}
@media(max-width:640px){
  .plan-item{grid-template-columns:44px 1fr;padding:20px 12px}
  .plan-arrow{display:none}
}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--heading);line-height:1.6}
.faq-q:hover{color:var(--primary)}
.faq-plus{flex:none;width:22px;height:22px;position:relative;transition:transform .24s var(--ease);color:var(--primary)}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-plus::before{left:50%;top:2px;width:2px;height:18px;transform:translateX(-50%)}
.faq-plus::after{top:50%;left:2px;height:2px;width:18px;transform:translateY(-50%)}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 40px 24px 4px;font-size:15.5px;color:var(--muted)}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
@media(max-width:1023px){.contact-grid{grid-template-columns:1fr}}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-row{display:flex;flex-direction:column;gap:8px}
.form-row.full{grid-column:1/-1}
.form-row label{font-size:14px;font-weight:600;color:var(--heading)}
.form-row input,.form-row select,.form-row textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.form-row textarea{min-height:130px;resize:vertical;line-height:1.7}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,95,208,.18)}
.form-tip{font-size:13px;color:var(--muted);margin-top:14px}
.info-card{background:var(--primary-soft);border-radius:var(--radius-lg);padding:30px}
.info-card h3{font-size:19px;font-weight:600}
.info-list{margin-top:20px;display:grid;gap:16px}
.info-list li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:14.5px;color:var(--text);line-height:1.7}
.info-list svg{color:var(--primary);margin-top:5px}
.info-strip{margin-top:24px;border-radius:14px;overflow:hidden}
.info-strip img{width:100%;aspect-ratio:3/2;object-fit:cover;opacity:.85}
@media(max-width:640px){
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .info-card{padding:22px}
}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-lg);margin:0 auto}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;padding:52px 44px;background:linear-gradient(90deg,rgba(12,30,58,.92),rgba(12,30,58,.72)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;border-radius:var(--radius-lg)}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.cta-inner p{color:#C6D2E4;font-size:15px;margin-top:12px;max-width:38em}
@media(max-width:640px){.cta-inner{padding:34px 22px}}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);margin-top:88px;padding-top:64px;color:#A9B8CE}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 3fr 3fr;gap:32px;padding-bottom:48px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:#7C8DA8}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:#A9B8CE;max-width:30em}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:#A9B8CE;display:inline-block;border-left:1px solid transparent;padding-left:0}
.footer-col a:hover{color:#8FB6F2;padding-left:10px;border-left-color:#2E56A0}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7}
.footer-contact svg{color:#4E82DE;flex:none;margin-top:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7C8DA8}
.footer-bottom a{color:#7C8DA8}
.footer-bottom a:hover{color:#8FB6F2}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{margin-top:56px}}

/* roulang page: article */
:root{
  --primary:#1D5FD0;--primary-dark:#16489F;--primary-soft:#EAF1FD;--primary-line:#CFE0F8;
  --accent:#17A2A6;--tertiary:#E0A03C;
  --bg:#F5F7FB;--surface:#FFFFFF;--ink:#16202E;--text:#33415A;--muted:#5E6E85;--line:#E3E9F2;
  --footer:#0C1E3A;--footer-text:#A9B8CE;
  --r-sm:10px;--r:16px;--r-lg:20px;
  --sh-sm:0 8px 28px rgba(16,42,90,.08);--sh-md:0 16px 36px rgba(16,42,90,.14);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
h1,h2,h3,h4{color:var(--ink);font-weight:700;letter-spacing:-.01em}
:focus-visible{outline:3px solid rgba(29,95,208,.35);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:640px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* 顶栏 */
.topbar{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:40px;gap:12px}
.topbar-left{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-dot{width:8px;height:8px;border-radius:2px;background:var(--accent);flex:none}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a{transition:color .2s}
.topbar-right a:hover{color:var(--primary)}
@media(max-width:640px){.topbar-left span.hide-sm{display:none}}

/* 主导航 */
.mainnav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .25s}
.mainnav.is-scrolled{box-shadow:0 4px 20px rgba(16,42,90,.06)}
.mainnav-inner{display:flex;align-items:center;gap:20px;min-height:76px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:16px;color:var(--ink);font-weight:700;letter-spacing:-.01em}
.logo-text em{font-style:normal;font-size:12px;color:var(--muted)}

.nav-search{flex:1;max-width:560px;display:flex;align-items:center;gap:8px;height:46px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:0 6px 0 16px;transition:border-color .2s,box-shadow .2s}
.nav-search:focus-within{border-color:var(--primary-line);box-shadow:0 0 0 3px rgba(29,95,208,.18)}
.nav-search svg{flex:none;color:var(--muted)}
.nav-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:15px;color:var(--ink)}
.nav-search input::placeholder{color:#93A0B4}
.search-btn{flex:none;width:88px;height:34px;border:0;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s,transform .2s}
.search-btn:hover{background:var(--primary-dark)}
.search-btn:active{transform:translateY(1px)}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-sm);font-weight:600;cursor:pointer;border:1px solid transparent;transition:background .2s,color .2s,box-shadow .2s,transform .2s,border-color .2s;text-align:center}
.btn-primary{background:var(--primary);color:#fff;padding:13px 26px;font-size:15px;box-shadow:0 8px 20px rgba(29,95,208,.22)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-line{background:#fff;color:var(--primary);border-color:var(--primary-line);padding:12px 24px;font-size:15px}
.btn-line:hover{background:var(--primary-soft)}
.btn-sm{padding:10px 18px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.nav-toggle:hover{background:var(--primary-soft);border-color:var(--primary-line)}

.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-menu.is-open{display:block}
.mobile-menu-inner{padding:16px 0 22px;display:flex;flex-direction:column;gap:14px}
.mobile-search{display:flex;align-items:center;gap:8px;height:48px;border:1px solid var(--line);border-radius:999px;padding:0 6px 0 16px;background:#fff}
.mobile-search input{flex:1;min-width:0;border:0;outline:none;background:transparent;font-size:15px}
.mobile-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-links a{padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:14px;color:var(--text);background:#fff}
.mobile-links a:hover{border-color:var(--primary-line);color:var(--primary);background:var(--primary-soft)}

/* 分类条 */
.catbar{background:#fff;border-bottom:1px solid var(--line)}
.catbar-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none}
.catbar-inner::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;padding:7px 16px 9px;border-radius:999px;font-size:14px;color:var(--muted);border-bottom:2px solid transparent;transition:color .2s,background .2s,border-color .2s;white-space:nowrap}
.chip:hover{color:var(--primary);background:var(--primary-soft)}
.chip.is-active{color:var(--primary);background:var(--primary-soft);border-bottom-color:var(--primary);font-weight:600}

/* 面包屑 */
.crumb-wrap{padding:20px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#B9C4D4}
.crumb .now{color:var(--primary);font-weight:600}

/* 文章头 */
.article-head{padding:24px 0 8px}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;line-height:1;font-weight:600}
.badge-soft{background:var(--primary-soft);color:var(--primary)}
.badge-accent{background:rgba(23,162,166,.12);color:var(--accent)}
.badge-gray{background:#EEF2F8;color:var(--muted)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin-bottom:18px}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#C4CEDD}
.article-title{font-size:clamp(26px,3.4vw,38px);line-height:1.28;font-weight:700;margin:0 0 20px;max-width:900px}
.lede{background:var(--primary-soft);border-left:3px solid var(--primary);border-radius:12px;padding:18px 22px;font-size:17px;line-height:1.85;color:#2A3B55;max-width:860px;margin-bottom:34px}

/* 正文布局 */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:56px;padding-bottom:72px;align-items:start}
.article-body{max-width:800px;font-size:17px;line-height:1.9;color:var(--text);word-break:break-word}
.article-body p{margin:0 0 1.2em}
.article-body h2{font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin:48px 0 18px;padding-left:14px;border-left:3px solid var(--primary)}
.article-body h3{font-size:19px;line-height:1.5;margin:32px 0 14px}
.article-body h4{font-size:17px;margin:24px 0 12px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin-bottom:.5em}
.article-body blockquote{margin:0 0 1.4em;padding:16px 20px;background:#F2F8F8;border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:#2A4A4B;font-size:16px}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-dark)}
.article-body img{border-radius:12px;margin:0 auto 8px}
.article-body figure{margin:0 0 22px}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted)}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th{background:var(--primary-soft);font-weight:600;color:var(--ink)}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body code{background:#F1F4F9;border-radius:6px;padding:2px 6px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px}
.article-body pre{background:#F1F4F9;border-radius:10px;padding:16px;overflow-x:auto;margin:0 0 1.4em}
.article-body pre code{background:none;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* 目录 */
.toc{position:sticky;top:104px;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-sm);padding:20px 20px 22px}
.toc-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--ink);margin-bottom:12px}
.toc-title i{width:8px;height:8px;border-radius:2px;background:var(--primary);display:inline-block}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.toc-list li{margin:0}
.toc-list a{display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--muted);border-left:2px solid transparent;margin-left:-1px;transition:color .2s,border-color .2s,background .2s}
.toc-list a:hover{color:var(--primary);background:#F8FBFF}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);font-weight:600}
.toc-list .lv3 a{padding-left:28px;font-size:13px}
.toc-empty{font-size:13px;color:var(--muted);padding-left:14px}
.toc-mobile{display:none;margin-bottom:26px;border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden}
.toc-mobile summary{cursor:pointer;padding:14px 18px;font-size:15px;font-weight:600;color:var(--ink);list-style:none}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile .toc-list{padding:6px 12px 14px;border-left:0}
.toc-mobile .toc-list a{padding-left:12px}

/* 标签 */
.tag-block{padding-top:34px;margin-top:10px;border-top:1px solid var(--line)}
.tag-block h2{font-size:17px;margin:0 0 14px;padding-left:12px;border-left:3px solid var(--primary)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);transition:border-color .2s,color .2s,background .2s}
.tag:hover{border-color:var(--primary-line);color:var(--primary);background:var(--primary-soft)}

/* 上下篇 */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:40px}
.pn-card{display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;box-shadow:var(--sh-sm);transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.pn-card .pn-label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.pn-card strong{display:block;font-size:15px;color:var(--ink);line-height:1.55}
.pn-card svg{flex:none;color:var(--primary);transition:transform .25s}
.pn-card:hover svg{transform:translateX(4px)}

/* 相关推荐 */
.reco{padding:0 0 8px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--muted)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:15px;font-weight:600;border-bottom:2px solid transparent;padding-bottom:2px;transition:border-color .2s}
.link-arrow svg{transition:transform .25s}
.link-arrow:hover{border-color:var(--primary)}
.link-arrow:hover svg{transform:translateX(4px)}
.reco-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-sm);transition:transform .3s cubic-bezier(.2,.7,.3,1),box-shadow .3s}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.cover{position:relative;overflow:hidden;aspect-ratio:16/9;background:#E9EFF8}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s cubic-bezier(.2,.7,.3,1)}
.card:hover .cover img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin:0;font-size:15px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto}

/* CTA */
.cta-band{margin:88px 0 0;background:linear-gradient(180deg,rgba(12,30,58,.86),rgba(12,30,58,.9)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;border-radius:var(--r-lg);padding:56px 40px;color:#fff}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.4;margin-bottom:12px}
.cta-band p{color:#C6D4E6;max-width:620px;margin:0 0 26px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.cta-band .btn-line:hover{background:rgba(255,255,255,.14)}
.cta-wrap{padding-bottom:88px}

/* 空态 */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r);background:#fff}
.empty-state svg{color:#C4CEDD}
.empty-state p{margin:0;font-size:15px;color:var(--muted)}

/* 页脚 */
.site-footer{background:var(--footer);color:var(--footer-text);padding-top:64px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 3fr 3fr;gap:40px;padding-bottom:48px}
.footer-brand .logo-mark{background:var(--primary)}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:#8FA3BF}
.footer-brand p{margin:18px 0 0;font-size:14px;line-height:1.85;color:var(--footer-text);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--footer-text);transition:color .2s,padding-left .2s}
.footer-col a:hover{color:#7FB0FF;padding-left:4px}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7}
.footer-contact svg{flex:none;margin-top:4px;color:#5C7CA6}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:#8496B0}
.footer-bottom a:hover{color:#7FB0FF}

@media(max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .toc{display:none}
  .toc-mobile{display:block}
  .reco-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  .nav-search{display:none}
  .nav-actions .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .mainnav-inner{min-height:64px;gap:12px}
  .article-title{margin-bottom:16px}
  .lede{padding:16px 18px;font-size:16px}
  .reco-grid{grid-template-columns:minmax(0,1fr)}
  .pn-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:40px 22px;margin-top:64px}
  .cta-wrap{padding-bottom:64px}
  .article-layout{padding-bottom:56px}
}
@media(max-width:520px){
  .topbar-right{gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .logo-text em{display:none}
  .article-body{font-size:16px}
}

/* roulang page: category1 */
:root{
    --primary:#1D5FD0;
    --primary-dark:#16489F;
    --primary-soft:#EAF1FD;
    --primary-line:#CFE0F8;
    --accent:#17A2A6;
    --tertiary:#E0A03C;
    --bg:#F5F7FB;
    --white:#FFFFFF;
    --ink:#16202E;
    --text:#33415A;
    --muted:#5E6E85;
    --line:#E3E9F2;
    --footer:#0C1E3A;
    --r-card:16px;
    --r-cardlg:20px;
    --r-btn:10px;
    --shadow:0 8px 28px rgba(16,42,90,.08);
    --shadow-hover:0 16px 36px rgba(16,42,90,.14);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--bg);
    font-variant-numeric:tabular-nums;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
  img{max-width:100%;display:block}
  button,input,select,textarea{font:inherit;color:inherit}
  button{background:none;border:none;cursor:pointer}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

  .container{max-width:1200px;margin:0 auto;padding:0 16px}
  @media (min-width:768px){.container{padding:0 24px}}
  @media (min-width:1024px){.container{padding:0 32px}}

  /* ---------- 顶栏 ---------- */
  .topbar{background:var(--white);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
  .topbar-inner{height:40px;display:flex;align-items:center;justify-content:space-between;gap:16px}
  .topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar-links{display:flex;align-items:center;gap:18px;flex:none}
  .topbar-links a:hover{color:var(--primary)}

  /* ---------- 主导航 ---------- */
  .mainnav{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease);
  }
  .mainnav.is-scrolled{box-shadow:0 4px 20px rgba(16,42,90,.06)}
  .mainnav-inner{min-height:76px;display:flex;align-items:center;gap:20px;padding-top:12px;padding-bottom:12px}
  .logo{display:flex;align-items:center;gap:10px;flex:none}
  .logo-mark{
    width:36px;height:36px;flex:none;border-radius:10px;
    background:var(--primary);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:17px;font-weight:700;
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.25}
  .logo-text strong{font-size:16px;color:var(--ink);font-weight:700;white-space:nowrap}
  .logo-text em{font-style:normal;font-size:12px;color:var(--muted)}

  .search-form{
    flex:1 1 auto;max-width:560px;height:46px;
    display:flex;align-items:center;gap:8px;
    padding:0 4px 0 16px;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-form:focus-within{border-color:var(--primary-line);box-shadow:0 0 0 3px rgba(29,95,208,.14)}
  .search-icon{width:18px;height:18px;flex:none;color:var(--muted)}
  .search-input{flex:1 1 auto;min-width:0;border:none;background:transparent;font-size:14px;outline:none;color:var(--text)}
  .search-input::placeholder{color:#93A1B5}
  .search-btn{
    flex:none;width:88px;height:38px;border-radius:999px;
    background:var(--primary);color:#fff;font-size:14px;font-weight:600;
    transition:background .2s var(--ease),transform .2s var(--ease);
  }
  .search-btn:hover{background:var(--primary-dark)}
  .search-btn:active{transform:scale(.97)}

  .nav-actions{display:flex;align-items:center;gap:10px;flex:none;margin-left:auto}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .btn-primary{background:var(--primary);color:#fff}
  .btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(29,95,208,.26)}
  .btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
  .btn-outline:hover{background:var(--primary-soft)}
  .btn-sm{padding:10px 20px;font-size:14px;border-radius:999px}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--line);background:#fff;color:var(--ink);
    align-items:center;justify-content:center;
  }
  .nav-toggle:hover{border-color:var(--primary-line);color:var(--primary)}
  .mobile-search{display:none;padding:0 16px 12px}
  .mobile-search.is-open{display:block}
  .mobile-menu{display:none;border-top:1px solid var(--line);background:#fff}
  .mobile-menu.is-open{display:block}
  .mobile-menu ul{padding:8px 16px 16px}
  .mobile-menu a{display:block;padding:12px 4px;font-size:15px;border-bottom:1px solid var(--line)}
  .mobile-menu a:last-child{border-bottom:none}
  .mobile-menu a.is-active{color:var(--primary);font-weight:600}

  /* ---------- 分类条 ---------- */
  .catbar{background:#fff;border-bottom:1px solid var(--line)}
  .catbar-inner{
    height:48px;display:flex;align-items:center;gap:10px;
    overflow-x:auto;white-space:nowrap;
    -ms-overflow-style:none;scrollbar-width:none;
  }
  .catbar-inner::-webkit-scrollbar{display:none}
  .chip{
    flex:none;padding:6px 16px;border-radius:999px;
    font-size:14px;color:var(--text);
    border-bottom:2px solid transparent;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .chip:hover{background:var(--primary-soft);color:var(--primary)}
  .chip.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;border-bottom-color:var(--primary)}

  /* ---------- 面包屑 ---------- */
  .crumb{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
  .crumb a:hover{color:var(--primary)}
  .crumb .sep{color:#C3CDDB}
  .crumb .cur{color:var(--primary)}

  /* ---------- Hero ---------- */
  .hero{
    background:
      radial-gradient(rgba(29,95,208,.055) 1px, transparent 1px) 0 0/18px 18px,
      linear-gradient(180deg,#F5F8FF 0%, #F5F7FB 100%);
    border-bottom:1px solid var(--line);
    padding:24px 0 44px;
  }
  .hero-grid{display:grid;grid-template-columns:1fr;gap:28px;margin-top:20px}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    height:26px;padding:0 14px;border-radius:999px;
    background:var(--primary-soft);color:var(--primary);
    border:1px solid var(--primary-line);
    font-size:12px;font-weight:600;
  }
  .hero-title{
    margin:16px 0 12px;
    font-size:clamp(30px,4.2vw,46px);
    line-height:1.2;font-weight:700;letter-spacing:-.01em;
  }
  .hero-sub{font-size:16px;line-height:1.85;color:var(--text);max-width:38em}
  .hero-search{
    margin-top:24px;max-width:560px;height:50px;
    display:flex;align-items:center;gap:8px;
    padding:0 5px 0 18px;background:#fff;
    border:1px solid var(--line);border-radius:999px;
    box-shadow:var(--shadow);
    transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .hero-search:focus-within{border-color:var(--primary-line);box-shadow:0 0 0 3px rgba(29,95,208,.16)}
  .hero-points{display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;margin-top:22px;font-size:14px;color:var(--muted)}
  .hero-points li{position:relative;padding-left:14px}
  .hero-points li::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:6px;height:6px;border-radius:2px;background:var(--accent);
  }
  .hero-media{position:relative;border-radius:var(--r-cardlg);overflow:hidden;box-shadow:var(--shadow)}
  .hero-media img{width:100%;height:230px;object-fit:cover;transition:transform .3s var(--ease)}
  .hero-media:hover img{transform:scale(1.03)}
  .media-tag{
    position:absolute;left:16px;bottom:16px;
    display:flex;align-items:baseline;gap:8px;
    padding:10px 16px;border-radius:12px;
    background:rgba(255,255,255,.94);
    box-shadow:0 8px 22px rgba(16,42,90,.14);
  }
  .media-tag strong{font-size:22px;color:var(--primary);line-height:1}
  .media-tag span{font-size:13px;color:var(--muted)}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.06em;
  }
  .eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent)}
  .section-title{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-top:12px}
  .section-desc{margin-top:14px;font-size:16px;color:var(--text);max-width:38em}
  .link-arrow{
    display:inline-flex;align-items:center;gap:8px;
    color:var(--primary);font-size:15px;font-weight:600;
    border-bottom:2px solid transparent;padding-bottom:2px;
    transition:border-color .2s var(--ease),gap .2s var(--ease);
  }
  .link-arrow svg{transition:transform .2s var(--ease)}
  .link-arrow:hover{border-bottom-color:var(--primary)}
  .link-arrow:hover svg{transform:translateX(4px)}

  /* ---------- 入口矩阵 ---------- */
  .entry-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .entry-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px}
  .entry-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:36px}
  .entry-card{
    display:flex;align-items:flex-start;gap:18px;
    min-height:160px;padding:26px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--shadow);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line)}
  .entry-icon{
    width:44px;height:44px;flex:none;border-radius:12px;
    background:var(--primary-soft);color:var(--primary);
    display:flex;align-items:center;justify-content:center;
  }
  .entry-body{flex:1 1 auto;min-width:0}
  .entry-title{font-size:19px;line-height:1.5;font-weight:600}
  .entry-desc{margin-top:8px;font-size:14px;line-height:1.7;color:var(--muted)}
  .entry-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px}
  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;
    border-radius:999px;font-size:12px;font-weight:600;
    background:var(--primary-soft);color:var(--primary);
  }
  .badge-accent{background:rgba(23,162,166,.12);color:#128B8E}
  .badge-muted{background:#F1F4F9;color:var(--muted);font-weight:500}
  .entry-arrow{flex:none;color:#A9B6C8;transition:color .2s var(--ease),transform .2s var(--ease)}
  .entry-card:hover .entry-arrow{color:var(--primary);transform:translateX(4px)}

  /* ---------- 路径图 ---------- */
  .path-wrap{margin-top:40px;position:relative}
  .path-list{display:grid;grid-template-columns:1fr;gap:22px}
  .path-item{
    position:relative;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--shadow);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .path-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
  .path-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:34px;height:34px;border-radius:50%;
    background:var(--primary);color:#fff;font-size:13px;font-weight:700;
  }
  .path-title{margin-top:14px;font-size:18px;font-weight:600}
  .path-desc{margin-top:8px;font-size:14px;line-height:1.7;color:var(--muted)}
  .path-line{display:none}

  /* ---------- 对照面板 ---------- */
  .compare-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .compare{display:grid;grid-template-columns:1fr;gap:20px;margin-top:36px}
  .compare-col{
    border:1px solid var(--line);border-radius:var(--r-card);
    background:#fff;overflow:hidden;box-shadow:var(--shadow);
  }
  .compare-head{
    display:flex;align-items:center;gap:12px;
    padding:18px 24px;border-bottom:1px solid var(--line);
    background:var(--primary-soft);
  }
  .compare-head h3{font-size:18px;color:var(--primary-dark)}
  .compare-head .dot{width:8px;height:8px;border-radius:2px;background:var(--primary)}
  .compare-row{
    display:flex;align-items:flex-start;gap:14px;
    padding:18px 24px;border-bottom:1px solid var(--line);
    font-size:15px;line-height:1.75;
  }
  .compare-row:last-child{border-bottom:none}
  .compare-row .k{flex:none;width:84px;color:var(--muted);font-size:14px}
  .compare-row .v{flex:1 1 auto;color:var(--text)}
  .compare-note{
    margin-top:20px;padding:16px 22px;border-radius:12px;
    background:var(--primary-soft);border-left:3px solid var(--primary);
    font-size:15px;color:var(--text);
  }

  /* ---------- 适用场景（5/7 偏置） ---------- */
  .scene-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:start;margin-top:36px}
  .scene-media{border-radius:var(--r-cardlg);overflow:hidden;box-shadow:var(--shadow)}
  .scene-media img{width:100%;height:250px;object-fit:cover;transition:transform .3s var(--ease)}
  .scene-media:hover img{transform:scale(1.03)}
  .scene-list{display:flex;flex-direction:column;gap:18px}
  .scene-item{
    display:flex;gap:16px;padding:20px 22px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    transition:box-shadow .3s var(--ease),transform .3s var(--ease);
  }
  .scene-item:hover{transform:translateX(4px);box-shadow:var(--shadow-hover)}
  .scene-item .idx{
    flex:none;font-size:13px;font-weight:700;color:var(--accent);
    letter-spacing:.04em;padding-top:3px;
  }
  .scene-item h3{font-size:18px;font-weight:600;line-height:1.5}
  .scene-item p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--muted)}

  /* ---------- FAQ ---------- */
  .faq-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .faq-list{max-width:820px;margin:32px auto 0;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink);
    transition:color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--primary)}
  .faq-item summary .plus{
    flex:none;width:22px;height:22px;margin-top:3px;color:var(--primary);
    transition:transform .24s var(--ease);
  }
  .faq-item[open] summary .plus{transform:rotate(45deg)}
  .faq-answer{
    padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text);
    max-width:64ch;
  }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;margin-top:8px;
    background-image:linear-gradient(rgba(12,30,58,.82),rgba(12,30,58,.82)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    padding:56px 0;
  }
  .cta-inner{display:grid;grid-template-columns:1fr;gap:26px;align-items:center}
  .cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3}
  .cta-band p{margin-top:14px;color:#C6D3E6;font-size:16px;max-width:56ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
  .cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
  .cta-band .btn-outline:hover{background:rgba(255,255,255,.14)}
  .cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px;font-size:13px;color:#A9B8CE}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--footer);padding-top:64px;color:#A9B8CE}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:38px}
  .footer-brand .logo{margin-bottom:18px}
  .footer-brand .logo-text strong{color:#fff}
  .footer-brand .logo-text em{color:#8FA2BD}
  .footer-brand .logo-mark{background:var(--primary)}
  .footer-brand p{font-size:14px;line-height:1.8;color:#A9B8CE;max-width:40ch}
  .footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
  .footer-col ul{display:flex;flex-direction:column;gap:11px}
  .footer-col a{font-size:14px;color:#A9B8CE;display:inline-block;position:relative;padding-left:0;transition:color .2s var(--ease),padding-left .2s var(--ease)}
  .footer-col a::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:1px;height:0;background:var(--primary);transition:height .2s var(--ease);
  }
  .footer-col a:hover{color:#7FA8EE;padding-left:10px}
  .footer-col a:hover::before{height:14px}
  .footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7}
  .footer-contact svg{flex:none;margin-top:4px;color:#7FA8EE}
  .footer-bottom{
    margin-top:48px;padding:22px 0;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:#8FA2BD;
  }
  .footer-bottom a:hover{color:#7FA8EE}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .search-form{display:none}
    .nav-toggle{display:inline-flex}
    .mobile-search .search-form{display:flex;max-width:none;height:44px}
  }
  @media (min-width:640px){
    .entry-grid{grid-template-columns:repeat(2,1fr)}
    .path-list{grid-template-columns:repeat(2,1fr)}
    .compare{grid-template-columns:repeat(2,1fr)}
  }
  @media (min-width:1024px){
    .section{padding:88px 0}
    .hero{padding:28px 0 56px}
    .hero-grid{grid-template-columns:7fr 5fr;gap:44px;align-items:center}
    .hero-media img{height:300px}
    .entry-grid{gap:24px}
    .path-list{grid-template-columns:repeat(4,1fr)}
    .path-line{
      display:block;position:absolute;left:8%;right:8%;top:41px;height:1px;
      background:repeating-linear-gradient(90deg,var(--primary-line) 0 8px,transparent 8px 16px);
      z-index:0;
    }
    .path-item{position:relative;z-index:1}
    .scene-grid{grid-template-columns:5fr 7fr;gap:48px}
    .cta-inner{grid-template-columns:7fr 5fr}
    .cta-actions{justify-content:flex-end}
    .footer-grid{grid-template-columns:4fr 2fr 3fr 3fr;gap:40px}
  }
  @media (min-width:1280px){
    .entry-grid{gap:26px}
  }

/* roulang page: category2 */
:root{
  --primary:#1D5FD0;
  --primary-dark:#16489F;
  --primary-soft:#EAF1FD;
  --primary-line:#CFE0F8;
  --accent:#17A2A6;
  --tertiary:#E0A03C;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --heading:#16202E;
  --text:#33415A;
  --muted:#5E6E85;
  --line:#E3E9F2;
  --deep:#0C1E3A;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 8px 28px rgba(16,42,90,.08);
  --shadow-hover:0 16px 36px rgba(16,42,90,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body h1,body h2,body h3,body h4{
  margin:0;
  color:var(--heading);
  font-weight:700;
  letter-spacing:-0.01em;
}
body p{margin:0}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none !important}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
}
@media (min-width:640px){ .container{padding:0 24px} }
@media (min-width:1024px){ .container{padding:0 32px} }

/* ---------- 顶栏 ---------- */
.topbar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  min-height:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--muted);
}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:10px;flex-shrink:0}
.topbar-links a{transition:color .2s var(--ease)}
.topbar-links a:hover{color:var(--primary)}
.topbar-sep{width:1px;height:12px;background:var(--line)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 20px rgba(16,42,90,.06)}
.nav-inner{
  min-height:76px;
  display:flex;
  align-items:center;
  gap:20px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  font-size:17px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  line-height:1;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:16px;color:var(--heading);font-weight:700;letter-spacing:-.01em}
.logo-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.02em}

.search-box{
  flex:1;
  max-width:560px;
  height:46px;
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 6px 0 14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{
  border-color:var(--primary-line);
  box-shadow:0 0 0 3px rgba(29,95,208,.18);
}
.search-icon{width:18px;height:18px;color:var(--muted);flex-shrink:0}
.search-input{
  flex:1;
  min-width:0;
  border:0;
  outline:none;
  background:transparent;
  font-size:14px;
  color:var(--text);
}
.search-input::placeholder{color:#9AA8BC}
.search-btn{
  width:88px;
  height:36px;
  flex-shrink:0;
  border:0;
  border-radius:999px;
  background:var(--primary);
  color:#fff;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{background:var(--primary-dark)}
.search-btn:focus-visible{outline:2px solid var(--primary-dark);outline-offset:2px}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.nav-icon-btn{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-icon-btn:hover{border-color:var(--primary-line);background:var(--primary-soft)}
.nav-burger{
  display:none;
  width:40px;height:40px;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:4px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
}
.nav-burger span{display:block;width:16px;height:2px;background:var(--heading);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-panel{
  display:none;
  padding:14px 0 18px;
  border-top:1px solid var(--line);
  background:#fff;
}
.mobile-panel.is-open{display:block}
.mobile-panel .search-box{max-width:none;width:100%;margin-bottom:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--primary-dark);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft)}
.btn-white{background:#fff;color:var(--primary-dark)}
.btn-white:hover{background:var(--primary-soft);transform:translateY(-1px)}
.btn-ghost-white{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost-white:hover{background:rgba(255,255,255,.14)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  padding-bottom:2px;
  border-bottom:2px solid transparent;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.link-arrow svg{transition:transform .25s var(--ease)}
.link-arrow:hover{border-bottom-color:var(--primary)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 分类条 ---------- */
.catbar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.catbar-inner{
  min-height:48px;
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
}
.catbar-inner::-webkit-scrollbar{display:none}
.chip{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  font-size:14px;
  color:var(--text);
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{background:var(--primary-soft);color:var(--primary-dark)}
.chip.is-active{
  color:var(--primary);
  background:var(--primary-soft);
  border-color:var(--primary-line);
  font-weight:600;
  box-shadow:inset 0 -2px 0 var(--primary);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  padding:16px 0 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:#C3CDDD}
.breadcrumb .current{color:var(--primary);font-weight:600}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:#F5F8FF;
  border-bottom:1px solid var(--line);
  padding:36px 0 56px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(29,95,208,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(29,95,208,.06) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.55;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px}
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  background:var(--primary-soft);
  border:1px solid var(--primary-line);
  color:var(--primary-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent)}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(27px,3.6vw,40px);
  line-height:1.25;
  letter-spacing:-.01em;
}
.page-hero .hero-lead{
  margin-top:16px;
  max-width:37ch;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-keypoints{
  display:flex;
  flex-wrap:wrap;
  gap:14px 22px;
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
}
.hero-keypoints li{display:flex;align-items:center;gap:8px}
.hero-keypoints li::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--primary-line)}

.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.hero-media-card{
  position:absolute;
  right:16px;
  bottom:-18px;
  min-width:172px;
  padding:14px 18px;
  background:var(--primary-soft);
  border:1px solid var(--primary-line);
  border-radius:14px;
}
.hero-media-card strong{
  display:block;
  font-size:26px;
  line-height:1.2;
  color:var(--primary);
  font-weight:700;
}
.hero-media-card span{font-size:13px;color:var(--muted)}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){ .section{padding:92px 0} }
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{
  position:relative;
  padding-left:14px;
  font-size:clamp(22px,2.8vw,32px);
  line-height:1.35;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:3px;
  border-radius:2px;
  background:var(--primary);
}
.section-head p{margin-top:12px;font-size:15px;color:var(--muted);max-width:62ch}

/* ---------- 列表布局 ---------- */
.list-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
@media (min-width:1024px){
  .list-layout{grid-template-columns:3fr 9fr;gap:32px}
}
.filter-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
  height:max-content;
}
@media (min-width:1024px){
  .filter-panel{position:sticky;top:104px}
}
.filter-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.filter-title{font-size:15px;font-weight:700;color:var(--heading)}
.filter-reset{
  border:0;background:transparent;color:var(--primary);
  font-size:13px;font-weight:600;cursor:pointer;padding:2px 0;
}
.filter-reset:hover{color:var(--primary-dark);text-decoration:underline}
.filter-group{margin-top:18px}
.filter-group-title{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.06em;
  margin-bottom:10px;
}
.filter-chip{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  margin-bottom:8px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  font-size:14px;
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.filter-chip:last-child{margin-bottom:0}
.filter-chip input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.filter-chip span{flex:1}
.filter-chip em{font-style:normal;font-size:12px;color:var(--muted)}
.filter-chip:hover{border-color:var(--primary-line);background:var(--primary-soft)}
.filter-chip.is-checked{
  border-color:var(--primary);
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-weight:600;
}
.filter-chip.is-checked em{color:var(--primary)}
.filter-chip:focus-within{box-shadow:0 0 0 3px rgba(29,95,208,.18)}

.list-toolbar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 18px;
  background:#fff;
  border:1px solid var(--line);
  border-bottom:0;
  border-radius:var(--radius) var(--radius) 0 0;
}
.list-count{font-size:14px;color:var(--muted)}
.list-count strong{color:var(--primary);font-weight:700;font-size:16px;margin:0 4px}
.sort-box{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.sort-box select{
  height:34px;
  padding:0 30px 0 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235E6E85' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 10px center;
  font-size:13px;
  color:var(--text);
  cursor:pointer;
  appearance:none;
}
.sort-box select:focus{outline:none;border-color:var(--primary-line);box-shadow:0 0 0 3px rgba(29,95,208,.18)}

.row-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:0 0 var(--radius) var(--radius);
  overflow:hidden;
}
.row-item{
  display:grid;
  grid-template-columns:52px minmax(0,1fr) 24px;
  gap:14px;
  align-items:start;
  padding:20px 18px;
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.row-item:last-child{border-bottom:0}
.row-item:hover{background:var(--primary-soft);box-shadow:inset 3px 0 0 var(--primary)}
.row-item:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.row-no{
  font-size:15px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.04em;
  padding-top:2px;
}
.row-title{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--heading);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.row-desc{
  margin-top:6px;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.row-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tag{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  line-height:1;
  background:#F1F4FA;
  border:1px solid var(--line);
  color:var(--muted);
  white-space:nowrap;
}
.tag--cat{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary);font-weight:600}
.row-arrow{
  align-self:center;
  color:#B8C4D6;
  transition:color .2s var(--ease),transform .25s var(--ease);
}
.row-item:hover .row-arrow{color:var(--primary);transform:translateX(3px)}

@media (min-width:768px){
  .row-item{
    grid-template-columns:60px minmax(0,1fr) 160px 24px;
    gap:20px;
    align-items:center;
  }
  .row-tags{margin-top:0;justify-content:flex-end}
}

.empty-state{
  padding:56px 24px;
  text-align:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:0 0 var(--radius) var(--radius);
}
.empty-state svg{width:48px;height:48px;color:#C3CDDD;margin:0 auto 14px}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:16px}

/* ---------- 提示条 ---------- */
.tipbar{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
  padding:24px;
  background:var(--primary-soft);
  border:1px solid var(--primary-line);
  border-radius:var(--radius);
}
@media (min-width:1024px){
  .tipbar{grid-template-columns:4fr 8fr;gap:32px;align-items:center;padding:28px 32px}
}
.tipbar-head h2{font-size:20px;line-height:1.5}
.tipbar-head p{margin-top:8px;font-size:14px;color:var(--muted)}
.tip-list{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:768px){ .tip-list{grid-template-columns:repeat(3,1fr)} }
.tip-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--text);
}
.tip-list li::before{
  content:"";
  flex-shrink:0;
  width:8px;height:8px;
  margin-top:8px;
  border-radius:2px;
  background:var(--accent);
}

/* ---------- 步骤 ---------- */
.step-list{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
}
@media (min-width:768px){ .step-list{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .step-list{grid-template-columns:repeat(4,1fr);gap:20px} }
.step-item{
  position:relative;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.step-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.step-no{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.06em;
  margin-bottom:12px;
}
.step-item h3{font-size:18px;line-height:1.5}
.step-item p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--muted)}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  padding:64px 0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
@media (min-width:1024px){ .cta-band{padding:88px 0} }
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(12,30,58,.93) 0%,rgba(12,30,58,.82) 55%,rgba(22,72,159,.78) 100%);
}
.cta-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:start;
}
@media (min-width:1024px){
  .cta-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center}
}
.cta-copy .eyebrow{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.28);color:#E7F0FF}
.cta-copy .eyebrow::before{background:var(--tertiary)}
.cta-copy h2{
  margin-top:18px;
  color:#fff;
  font-size:clamp(22px,2.8vw,32px);
  line-height:1.4;
}
.cta-copy p{margin-top:14px;color:#C6D4E8;font-size:15px;max-width:56ch}
.cta-points{margin-top:22px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:#D8E4F5}
.cta-points li::before{
  content:"";
  flex-shrink:0;
  width:8px;height:8px;
  margin-top:8px;
  border-radius:2px;
  background:var(--accent);
}
.cta-form{
  background:#fff;
  border-radius:var(--radius-lg);
  padding:24px;
  box-shadow:var(--shadow);
}
@media (min-width:640px){ .cta-form{padding:28px} }
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--heading);
  margin-bottom:8px;
}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  font-size:14px;
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(29,95,208,.18);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA8BC}
.form-note{margin-top:12px;font-size:12px;color:var(--muted);text-align:center}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--deep);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:44px;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:4fr 2fr 3fr 3fr;gap:40px} }
.site-footer .logo-text strong{color:#fff}
.site-footer .logo-text em{color:#8FA3C0}
.footer-brand p{
  margin-top:18px;
  max-width:42ch;
  font-size:14px;
  line-height:1.8;
  color:#A9B8CE;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  position:relative;
  font-size:14px;
  color:#A9B8CE;
  padding-left:0;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a:hover{color:#7FA9F0;padding-left:10px}
.footer-col a:hover::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:1px;height:12px;
  transform:translateY(-50%);
  background:#7FA9F0;
}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:#A9B8CE;
  line-height:1.7;
}
.footer-contact svg{flex-shrink:0;margin-top:4px;color:#5E7EA8}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  align-items:center;
  justify-content:space-between;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:#8FA3C0;
}
.footer-bottom a{transition:color .2s var(--ease)}
.footer-bottom a:hover{color:#7FA9F0}

/* ---------- 响应式导航 ---------- */
@media (max-width:1023px){
  .nav-inner .search-box{display:none}
  .nav-icon-btn{display:inline-flex}
}
@media (max-width:767px){
  .nav-burger{display:inline-flex}
  .nav-actions .btn{display:none}
  .topbar-note{max-width:60%}
}
@media (max-width:519px){
  .logo-text em{display:none}
  .hero-keypoints{flex-direction:column;gap:10px}
  .row-item{grid-template-columns:44px minmax(0,1fr) 20px;padding:18px 14px}
}

/* roulang page: category3 */
:root{
    --primary:#1D5FD0;
    --primary-dark:#16489F;
    --primary-soft:#EAF1FD;
    --primary-line:#CFE0F8;
    --accent:#17A2A6;
    --tertiary:#E0A03C;
    --bg:#F5F7FB;
    --white:#FFFFFF;
    --ink:#16202E;
    --text:#33415A;
    --muted:#5E6E85;
    --line:#E3E9F2;
    --footer-bg:#0C1E3A;
    --radius:16px;
    --radius-lg:20px;
    --radius-sm:10px;
    --shadow:0 8px 28px rgba(16,42,90,.08);
    --shadow-hover:0 16px 36px rgba(16,42,90,.14);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; cursor:pointer; border:0; background:none; color:inherit; }
  input,select,textarea{ font:inherit; color:inherit; }
  h1,h2,h3,h4{ color:var(--ink); margin:0; font-weight:700; line-height:1.3; }
  p{ margin:0; }
  ul{ margin:0; padding:0; list-style:none; }

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 16px;
  }
  @media (min-width:640px){ .container{ padding:0 24px; } }
  @media (min-width:1024px){ .container{ padding:0 32px; } }

  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:3px solid rgba(29,95,208,.35);
    outline-offset:2px;
    border-radius:8px;
  }

  /* ---------- 顶栏 ---------- */
  .topbar{
    background:var(--white);
    border-bottom:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
  }
  .topbar-inner{
    min-height:40px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
  }
  .topbar-inner .topbar-note{ display:flex; align-items:center; gap:8px; }
  .topbar-note .dot{
    width:8px; height:8px; border-radius:2px; background:var(--accent); flex:none;
  }
  .topbar-inner a{ color:var(--muted); transition:color .2s var(--ease); }
  .topbar-inner a:hover{ color:var(--primary); }
  @media (max-width:600px){ .topbar-inner .topbar-note span{ display:none; } }

  /* ---------- 主导航 ---------- */
  .navbar{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease);
  }
  .navbar.is-scrolled{ box-shadow:0 4px 20px rgba(16,42,90,.06); }
  .navbar-inner{
    min-height:76px;
    display:flex;
    align-items:center;
    gap:18px;
  }
  .logo{
    display:flex;
    align-items:center;
    gap:10px;
    flex:none;
  }
  .logo-mark{
    width:36px; height:36px;
    border-radius:10px;
    background:var(--primary);
    color:#fff;
    display:flex; align-items:center; justify-content:center;
    font-size:18px; font-weight:700;
    flex:none;
  }
  .logo-text{ display:flex; flex-direction:column; line-height:1.25; }
  .logo-text strong{ font-size:16px; color:var(--ink); font-weight:700; letter-spacing:-.01em; }
  .logo-text em{ font-size:12px; font-style:normal; color:var(--muted); }

  .nav-search{
    flex:1 1 auto;
    max-width:560px;
    height:46px;
    margin:0 auto;
    display:flex;
    align-items:center;
    gap:8px;
    padding:0 5px 0 16px;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .nav-search:focus-within{
    border-color:var(--primary-line);
    box-shadow:0 0 0 3px rgba(29,95,208,.18);
  }
  .nav-search svg{ flex:none; color:var(--muted); }
  .nav-search input{
    flex:1 1 auto;
    min-width:0;
    height:100%;
    border:0;
    outline:none;
    background:transparent;
    font-size:14px;
    color:var(--ink);
  }
  .nav-search input::placeholder{ color:#9AA8BC; }
  .nav-search button{
    flex:none;
    width:88px;
    height:38px;
    border-radius:999px;
    background:var(--primary);
    color:#fff;
    font-size:14px;
    font-weight:600;
    transition:background .2s var(--ease), transform .2s var(--ease);
  }
  .nav-search button:hover{ background:var(--primary-dark); transform:translateY(-1px); }

  .nav-actions{ display:flex; align-items:center; gap:12px; flex:none; }

  .nav-toggle{
    display:none;
    width:42px; height:42px;
    border:1px solid var(--line);
    border-radius:10px;
    align-items:center;
    justify-content:center;
    color:var(--ink);
    background:var(--white);
  }

  @media (max-width:1023px){
    .nav-search{ max-width:none; }
    .logo-text em{ display:none; }
  }
  @media (max-width:767px){
    .navbar-inner{ flex-wrap:wrap; padding:10px 0 12px; row-gap:10px; }
    .logo{ order:1; }
    .nav-actions{ order:2; margin-left:auto; }
    .nav-search{ order:3; flex-basis:100%; max-width:none; margin:0; }
    .nav-toggle{ display:flex; }
    .nav-actions .btn-primary{ display:none; }
  }

  /* ---------- 分类条 ---------- */
  .catbar{
    background:var(--white);
    border-bottom:1px solid var(--line);
  }
  .catbar-inner{
    display:flex;
    align-items:center;
    gap:8px;
    min-height:48px;
    overflow-x:auto;
    white-space:nowrap;
    scrollbar-width:none;
  }
  .catbar-inner::-webkit-scrollbar{ display:none; }
  .chip{
    flex:none;
    display:inline-flex;
    align-items:center;
    height:32px;
    padding:0 14px;
    font-size:14px;
    color:var(--text);
    border-radius:999px;
    border:1px solid transparent;
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  }
  .chip:hover{ background:var(--primary-soft); color:var(--primary); }
  .chip.is-active{
    color:var(--primary);
    background:var(--primary-soft);
    border-color:var(--primary-line);
    font-weight:600;
  }
  .catbar-inner .chip.is-active{ box-shadow:inset 0 -2px 0 var(--primary); }

  /* ---------- 移动端抽屉 ---------- */
  .mobile-menu{
    display:none;
    background:var(--white);
    border-bottom:1px solid var(--line);
    padding:12px 0 18px;
  }
  .mobile-menu.is-open{ display:block; }
  .mobile-menu ul{ display:grid; grid-template-columns:repeat(2,1fr); gap:10px; }
  .mobile-menu a{
    display:block;
    padding:11px 14px;
    border:1px solid var(--line);
    border-radius:10px;
    font-size:14px;
    color:var(--text);
    background:var(--white);
  }
  .mobile-menu a.is-active{
    color:var(--primary);
    background:var(--primary-soft);
    border-color:var(--primary-line);
    font-weight:600;
  }
  @media (min-width:768px){ .mobile-menu{ display:none !important; } }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:14px 28px;
    border-radius:var(--radius-sm);
    font-size:15px;
    font-weight:600;
    line-height:1;
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .btn-primary{
    background:var(--primary);
    color:#fff;
    box-shadow:0 8px 20px rgba(29,95,208,.22);
  }
  .btn-primary:hover{ background:var(--primary-dark); transform:translateY(-1px); box-shadow:0 12px 24px rgba(29,95,208,.26); }
  .btn-ghost{
    background:var(--white);
    color:var(--primary);
    border:1px solid var(--primary);
  }
  .btn-ghost:hover{ background:var(--primary-soft); transform:translateY(-1px); }
  .btn-sm{ padding:10px 18px; font-size:14px; }

  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    padding-bottom:2px;
    border-bottom:2px solid transparent;
    transition:border-color .2s var(--ease), color .2s var(--ease);
  }
  .link-arrow svg{ transition:transform .25s var(--ease); }
  .link-arrow:hover{ border-bottom-color:var(--primary); }
  .link-arrow:hover svg{ transform:translateX(4px); }

  /* ---------- 面包屑 ---------- */
  .crumb{
    padding:18px 0 0;
    font-size:13px;
    color:var(--muted);
  }
  .crumb ol{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; }
  .crumb li{ display:flex; align-items:center; gap:8px; }
  .crumb li::after{ content:"/"; color:#B9C4D4; }
  .crumb li:last-child::after{ content:""; }
  .crumb a{ color:var(--muted); transition:color .2s var(--ease); }
  .crumb a:hover{ color:var(--primary); }
  .crumb .current{ color:var(--primary); font-weight:600; }

  /* ---------- 页头 ---------- */
  .page-hero{
    padding:28px 0 44px;
  }
  .hero-panel{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
    padding:34px 32px;
  }
  .hero-panel::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(#1D5FD0 1px, transparent 1px);
    background-size:18px 18px;
    opacity:.05;
    pointer-events:none;
  }
  .hero-grid{
    position:relative;
    display:grid;
    grid-template-columns:1fr;
    gap:26px;
  }
  @media (min-width:900px){
    .hero-grid{ grid-template-columns:7fr 5fr; align-items:center; gap:36px; }
  }
  .hero-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:28px;
    padding:0 12px;
    border-radius:999px;
    background:var(--primary-soft);
    color:var(--primary);
    font-size:13px;
    font-weight:600;
  }
  .page-hero h1{
    margin-top:16px;
    font-size:clamp(30px,4.2vw,46px);
    line-height:1.2;
    letter-spacing:-.01em;
  }
  .page-hero .hero-sub{
    margin-top:16px;
    font-size:16px;
    color:var(--muted);
    max-width:38em;
  }
  .hero-stats{
    margin-top:26px;
    display:flex;
    flex-wrap:wrap;
    gap:0;
  }
  .hero-stats .stat{
    padding:0 22px;
    border-left:1px solid var(--line);
  }
  .hero-stats .stat:first-child{ padding-left:0; border-left:0; }
  .hero-stats .stat:last-child{ padding-right:0; }
  .hero-stats b{
    display:block;
    font-size:26px;
    line-height:1.2;
    color:var(--primary);
    font-weight:700;
  }
  .hero-stats span{ font-size:13px; color:var(--muted); }

  .hero-figure{
    position:relative;
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow);
    border:1px solid var(--line);
  }
  .hero-figure img{ width:100%; aspect-ratio:16/10; object-fit:cover; }
  .hero-figure .figure-card{
    position:absolute;
    left:16px;
    bottom:16px;
    background:rgba(255,255,255,.94);
    border:1px solid var(--primary-line);
    border-radius:12px;
    padding:10px 14px;
    font-size:13px;
    color:var(--muted);
    line-height:1.6;
  }
  .hero-figure .figure-card b{ color:var(--primary); font-size:15px; }

  /* ---------- 主体栅格 ---------- */
  main{ padding-bottom:8px; }
  .section{ padding:56px 0; }
  @media (min-width:1024px){ .section{ padding:88px 0; } }
  .section-head{ margin-bottom:32px; }
  .section-head h2{
    font-size:clamp(24px,3vw,34px);
    line-height:1.3;
    position:relative;
    padding-left:14px;
  }
  .section-head h2::before{
    content:"";
    position:absolute;
    left:0; top:6px; bottom:6px;
    width:3px;
    border-radius:2px;
    background:var(--primary);
  }
  .section-head p{ margin-top:12px; color:var(--muted); font-size:15px; max-width:40em; }

  .grid-12{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:26px;
  }
  .col-8{ grid-column:span 12; }
  .col-4{ grid-column:span 12; }
  @media (min-width:1024px){
    .col-8{ grid-column:span 8; }
    .col-4{ grid-column:span 4; }
  }

  .side-sticky{
    display:grid;
    gap:18px;
  }
  @media (min-width:1024px){
    .side-sticky{ position:sticky; top:150px; }
  }

  /* ---------- 问答列表 ---------- */
  .faq-list{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow);
    overflow:hidden;
  }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-item:last-child{ border-bottom:0; }
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:flex-start;
    gap:14px;
    padding:20px 22px;
    transition:background .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-item summary:hover{ background:#F9FBFF; }
  .faq-num{
    flex:none;
    width:30px; height:30px;
    border-radius:8px;
    background:var(--primary-soft);
    color:var(--primary);
    font-size:13px;
    font-weight:700;
    display:flex; align-items:center; justify-content:center;
    margin-top:2px;
  }
  .faq-q{
    flex:1 1 auto;
    font-size:17px;
    font-weight:600;
    color:var(--ink);
    line-height:1.6;
  }
  .faq-icon{
    flex:none;
    width:22px; height:22px;
    position:relative;
    margin-top:5px;
    color:var(--primary);
    transition:transform .24s var(--ease);
  }
  .faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    background:currentColor;
    border-radius:2px;
  }
  .faq-icon::before{ left:50%; top:3px; width:2px; height:16px; transform:translateX(-50%); }
  .faq-icon::after{ top:50%; left:3px; height:2px; width:16px; transform:translateY(-50%); }
  .faq-item[open] .faq-icon{ transform:rotate(45deg); }
  .faq-item[open] summary{ background:#F9FBFF; }
  .faq-a{
    padding:0 22px 22px 66px;
    font-size:15.5px;
    color:var(--text);
  }
  .faq-a p + p{ margin-top:10px; }
  .faq-a ul{ margin-top:12px; display:grid; gap:8px; }
  .faq-a li{
    position:relative;
    padding-left:18px;
    font-size:15px;
    color:var(--text);
  }
  .faq-a li::before{
    content:"";
    position:absolute;
    left:0; top:.72em;
    width:8px; height:8px;
    border-radius:2px;
    background:var(--accent);
  }
  .faq-a .answer-note{
    margin-top:14px;
    background:var(--primary-soft);
    border-left:3px solid var(--primary);
    border-radius:10px;
    padding:12px 16px;
    font-size:14.5px;
    color:var(--primary-dark);
  }
  @media (max-width:640px){
    .faq-item summary{ padding:16px; gap:10px; }
    .faq-a{ padding:0 16px 18px 16px; }
    .faq-q{ font-size:16px; }
  }

  /* ---------- 侧卡 ---------- */
  .side-card{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    padding:22px;
  }
  .side-card h3{
    font-size:16px;
    font-weight:600;
    display:flex;
    align-items:center;
    gap:8px;
    padding-bottom:12px;
    border-bottom:1px solid var(--line);
  }
  .side-card h3 .sq{
    width:8px; height:8px; border-radius:2px; background:var(--accent); flex:none;
  }
  .toc-list{ margin-top:14px; display:grid; gap:4px; }
  .toc-list a{
    display:block;
    padding:8px 12px;
    font-size:14px;
    color:var(--text);
    border-left:2px solid transparent;
    border-radius:0 8px 8px 0;
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  }
  .toc-list a:hover{
    background:var(--primary-soft);
    color:var(--primary);
    border-left-color:var(--primary);
  }

  .help-card{
    background:var(--primary-soft);
    border:1px solid var(--primary-line);
    border-radius:var(--radius);
    padding:22px;
  }
  .help-card h3{ font-size:16px; font-weight:600; color:var(--primary-dark); }
  .help-card p{ margin-top:10px; font-size:14px; color:#28456F; }
  .help-list{ margin-top:16px; display:grid; gap:12px; }
  .help-list li{ display:flex; gap:10px; font-size:14px; color:#28456F; align-items:flex-start; }
  .help-list svg{ flex:none; margin-top:4px; color:var(--primary); }
  .help-card .btn{ margin-top:18px; width:100%; }

  .side-media{
    border-radius:var(--radius);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
  }
  .side-media img{ width:100%; aspect-ratio:3/2; object-fit:cover; }
  .side-media .media-caption{
    padding:12px 16px;
    background:var(--white);
    font-size:13px;
    color:var(--muted);
  }

  .back-top{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    width:100%;
    padding:12px;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    font-size:14px;
    color:var(--muted);
    background:var(--white);
    transition:color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  }
  .back-top:hover{ color:var(--primary); border-color:var(--primary-line); transform:translateY(-1px); }

  /* ---------- 自检提示条 ---------- */
  .check-band{
    background:var(--white);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .check-inner{
    display:grid;
    grid-template-columns:1fr;
    gap:26px;
    padding:48px 0;
  }
  @media (min-width:900px){
    .check-inner{ grid-template-columns:5fr 7fr; gap:44px; align-items:start; }
  }
  .check-inner h2{ font-size:clamp(22px,2.6vw,30px); line-height:1.35; }
  .check-inner .check-desc{ margin-top:14px; color:var(--muted); font-size:15px; }
  .check-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:14px;
  }
  @media (min-width:640px){ .check-grid{ grid-template-columns:repeat(2,1fr); } }
  .check-item{
    display:flex;
    gap:12px;
    padding:18px 20px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#FBFCFE;
    transition:box-shadow .25s var(--ease), transform .25s var(--ease), border-color .25s var(--ease);
  }
  .check-item:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-hover);
    border-color:var(--primary-line);
  }
  .check-item .idx{
    flex:none;
    width:32px; height:32px;
    border-radius:9px;
    background:var(--primary-soft);
    color:var(--primary);
    font-size:13px;
    font-weight:700;
    display:flex; align-items:center; justify-content:center;
  }
  .check-item h3{ font-size:16px; font-weight:600; }
  .check-item p{ margin-top:6px; font-size:14px; color:var(--muted); }

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    background-color:#0F2450;
    background-image:url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(90deg, rgba(10,28,62,.92) 0%, rgba(10,28,62,.78) 55%, rgba(10,28,62,.62) 100%);
  }
  .cta-inner{
    position:relative;
    z-index:2;
    padding:56px 0;
    display:grid;
    grid-template-columns:1fr;
    gap:22px;
    align-items:center;
  }
  @media (min-width:900px){
    .cta-inner{ grid-template-columns:8fr 4fr; padding:66px 0; gap:36px; }
    .cta-actions{ justify-self:end; }
  }
  .cta-inner h2{ color:#fff; font-size:clamp(22px,2.8vw,32px); line-height:1.35; }
  .cta-inner p{ margin-top:12px; color:#C3D2E8; font-size:15px; max-width:44em; }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:14px; }
  .cta-actions .btn-ghost{
    background:transparent;
    color:#fff;
    border-color:rgba(255,255,255,.55);
  }
  .cta-actions .btn-ghost:hover{ background:rgba(255,255,255,.12); }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--footer-bg);
    color:#A9B8CE;
    padding-top:64px;
    font-size:14px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:36px;
    padding-bottom:48px;
  }
  @media (min-width:900px){
    .footer-grid{ grid-template-columns:4fr 2fr 3fr 3fr; gap:40px; }
  }
  .footer-brand .logo{ margin-bottom:18px; }
  .footer-brand .logo-mark{ background:var(--primary); }
  .footer-brand .logo-text strong{ color:#fff; }
  .footer-brand .logo-text em{ color:#7F92B0; }
  .footer-brand p{ color:#A9B8CE; font-size:14px; max-width:32em; }
  .footer-col h4{
    color:#fff;
    font-size:15px;
    font-weight:600;
    margin-bottom:18px;
  }
  .footer-col ul{ display:grid; gap:12px; }
  .footer-col a{
    color:#A9B8CE;
    display:inline-block;
    padding-left:0;
    border-left:1px solid transparent;
    transition:color .2s var(--ease), padding-left .2s var(--ease), border-color .2s var(--ease);
  }
  .footer-col a:hover{
    color:#8FB6F5;
    padding-left:9px;
    border-left-color:var(--primary);
  }
  .footer-contact li{
    display:flex;
    gap:10px;
    align-items:flex-start;
    color:#A9B8CE;
    line-height:1.7;
  }
  .footer-contact svg{ flex:none; margin-top:4px; color:#5C7BB0; }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);
    padding:20px 0 26px;
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    justify-content:space-between;
    align-items:center;
    font-size:13px;
    color:#8398B8;
  }
  .footer-bottom a{ color:#A9B8CE; transition:color .2s var(--ease); }
  .footer-bottom a:hover{ color:#8FB6F5; }

/* roulang page: category4 */
:root{
    --primary:#1D5FD0;
    --primary-dark:#16489F;
    --primary-soft:#EAF1FD;
    --primary-line:#CFE0F8;
    --accent:#17A2A6;
    --amber:#E0A03C;
    --bg:#F5F7FB;
    --surface:#FFFFFF;
    --heading:#16202E;
    --text:#33415A;
    --muted:#5E6E85;
    --line:#E3E9F2;
    --footer-bg:#0C1E3A;
    --radius-sm:10px;
    --radius:16px;
    --radius-lg:20px;
    --shadow-sm:0 4px 14px rgba(16,42,90,.06);
    --shadow:0 8px 28px rgba(16,42,90,.08);
    --shadow-lg:0 16px 36px rgba(16,42,90,.14);
    --container:1200px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  body h1{font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:700;letter-spacing:-.01em;color:var(--heading);margin:0}
  body h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--heading);margin:0}
  body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--heading);margin:0}
  body h4{font-size:15px;line-height:1.6;font-weight:600;color:var(--heading);margin:0}
  body p{margin:0}
  body ul,body ol{margin:0;padding:0;list-style:none}
  body img{display:block;max-width:100%;height:auto}
  body a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
  body button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  body input,body select,body textarea{font:inherit;color:inherit}
  :focus-visible{outline:3px solid rgba(29,95,208,.35);outline-offset:2px;border-radius:8px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px}
  @media(min-width:768px){.container{padding:0 24px}}
  @media(min-width:1024px){.container{padding:0 32px}}

  /* ---------- 顶栏 ---------- */
  .topbar{background:#fff;border-bottom:1px solid var(--line)}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;font-size:13px;color:var(--muted)}
  .topbar-note{display:inline-flex;align-items:center;gap:8px}
  .topbar-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
  .topbar-links{display:flex;align-items:center;gap:16px}
  .topbar-links a{color:var(--primary);font-weight:600}
  .topbar-links a:hover{color:var(--primary-dark)}
  @media(max-width:640px){.topbar-links span{display:none}}

  /* ---------- 主导航 ---------- */
  .nav-sticky{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease)}
  .nav-sticky.is-scrolled{box-shadow:0 4px 20px rgba(16,42,90,.08)}
  .nav-inner{display:flex;align-items:center;gap:18px;min-height:76px}
  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .logo-mark{width:36px;height:36px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex:0 0 auto}
  .logo-text{display:flex;flex-direction:column;line-height:1.25}
  .logo-text strong{font-size:15px;font-weight:700;color:var(--heading);letter-spacing:.01em}
  .logo-text em{font-size:11.5px;font-style:normal;color:var(--muted)}

  .searchbox{
    display:flex;align-items:center;gap:10px;
    flex:1 1 auto;max-width:560px;margin:0 auto;
    height:46px;padding:0 6px 0 18px;
    background:#fff;border:1px solid var(--line);border-radius:999px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .searchbox:focus-within{border-color:var(--primary-line);box-shadow:0 0 0 3px rgba(29,95,208,.18)}
  .searchbox-icon{flex:0 0 auto;color:var(--muted)}
  .searchbox-input{flex:1 1 auto;min-width:0;border:0;background:transparent;font-size:14px;outline:none}
  .searchbox-input::placeholder{color:#93A1B5}
  .searchbox-btn{flex:0 0 auto;width:88px;height:36px;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;transition:background-color .2s var(--ease)}
  .searchbox-btn:hover{background:var(--primary-dark)}

  .nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
  .nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--heading)}
  .nav-toggle:hover{background:var(--primary-soft);border-color:var(--primary-line);color:var(--primary)}
  .mobile-search{display:none;padding:0 0 14px}
  .mobile-search.is-open{display:block}
  @media(min-width:768px){.mobile-search{display:none !important}}
  @media(max-width:767px){
    .searchbox{display:none}
    .nav-toggle{display:inline-flex}
    .nav-actions .btn-nav{display:none}
  }

  /* ---------- 分类条 ---------- */
  .catbar{border-top:1px solid var(--line);background:#fff}
  .catbar-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
  .catbar-inner::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;display:inline-flex;align-items:center;height:32px;padding:0 14px;
    border-radius:999px;font-size:14px;color:var(--muted);border:1px solid transparent;
    transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .chip:hover{background:var(--primary-soft);color:var(--primary)}
  .chip.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;border-color:var(--primary-line)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:10px;padding:14px 28px;font-size:15px;font-weight:600;line-height:1;
    white-space:nowrap;transition:background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(29,95,208,.22)}
  .btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 12px 26px rgba(29,95,208,.28)}
  .btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary-line)}
  .btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px)}
  .btn-sm{padding:10px 18px;font-size:14px}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);border-bottom:2px solid transparent;padding-bottom:2px;transition:border-color .2s var(--ease)}
  .link-arrow svg{transition:transform .2s var(--ease)}
  .link-arrow:hover{border-bottom-color:var(--primary)}
  .link-arrow:hover svg{transform:translateX(4px)}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0}
  @media(min-width:1024px){.section{padding:96px 0}}
  .section-alt{background:#fff}
  .section-head{max-width:660px;margin-bottom:36px}
  .section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.04em;margin-bottom:12px}
  .section-kicker::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent)}
  .section-head p{margin-top:14px;font-size:16px;color:var(--muted);max-width:36em}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:#B9C4D4}
  .breadcrumb .current{color:var(--primary);font-weight:600}

  /* ---------- 页头 ---------- */
  .page-hero{position:relative;padding:36px 0 56px;background:#F5F8FF;border-bottom:1px solid var(--line);overflow:hidden}
  .page-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
    background-image:radial-gradient(rgba(29,95,208,.16) 1px,transparent 1px);
    background-size:18px 18px;
  }
  .page-hero .container{position:relative;z-index:1}
  .hero-grid{display:grid;gap:32px;align-items:center}
  @media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px}}
  .hero-eyebrow{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--primary-soft);border:1px solid var(--primary-line);color:var(--primary);font-size:12.5px;font-weight:600;margin-bottom:16px}
  .hero-copy p{margin-top:18px;font-size:17px;color:var(--muted);max-width:34em}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .hero-facts{display:flex;flex-wrap:wrap;margin-top:32px}
  .hero-facts li{padding:0 22px;border-left:1px solid var(--line)}
  .hero-facts li:first-child{padding-left:0;border-left:0}
  .hero-facts strong{display:block;font-size:26px;line-height:1.2;color:var(--primary);font-variant-numeric:tabular-nums}
  .hero-facts span{font-size:13px;color:var(--muted)}
  .hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow)}
  @media(max-width:1023px){.hero-media img{aspect-ratio:16/9}}

  /* ---------- 步骤条 ---------- */
  .stepper{display:grid;grid-template-columns:1fr;gap:28px}
  @media(min-width:640px){.stepper{grid-template-columns:repeat(2,1fr);gap:32px 24px}}
  @media(min-width:1024px){.stepper{grid-template-columns:repeat(4,1fr);gap:24px}}
  .step{position:relative;padding-top:42px}
  .step::after{content:"";position:absolute;top:12px;left:30px;right:-22px;height:1px;background:var(--line)}
  .step:last-child::after{display:none}
  @media(max-width:639px){.step::after{display:none}}
  @media(min-width:640px) and (max-width:1023px){.step:nth-child(2n)::after{display:none}}
  .step-dot{
    position:absolute;top:0;left:0;width:26px;height:26px;border-radius:50%;
    background:#fff;border:1px solid var(--primary-line);color:var(--muted);
    font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;
  }
  .step.is-current .step-dot{background:var(--primary);border-color:var(--primary);color:#fff}
  .step h3{font-size:17px;margin-bottom:6px}
  .step p{font-size:14px;line-height:1.7;color:var(--muted)}

  /* ---------- 图文交替 ---------- */
  .guide-row{display:grid;gap:28px;align-items:center}
  .guide-row + .guide-row{margin-top:56px}
  @media(min-width:1024px){
    .guide-row{grid-template-columns:5fr 7fr;gap:56px}
    .guide-row + .guide-row{margin-top:72px}
    .guide-row.is-reverse .guide-media{order:2}
    .guide-row.is-reverse .guide-body{order:1}
  }
  .guide-media{position:relative}
  .guide-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow)}
  .guide-num{position:absolute;top:16px;left:16px;height:28px;padding:0 12px;border-radius:999px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;gap:6px;letter-spacing:.04em}
  .guide-tag{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:600;margin-bottom:14px}
  .guide-body h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:14px}
  .guide-body p{font-size:16px;color:var(--text);max-width:36em}
  .guide-list{margin-top:18px;display:grid;gap:10px}
  .guide-list li{position:relative;padding-left:20px;font-size:15px;color:var(--muted)}
  .guide-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--primary-line)}
  .guide-more{margin-top:22px}

  /* ---------- 要点提示 ---------- */
  .tips{display:flex;gap:16px;margin:56px 0 0;padding:24px 28px;background:var(--primary-soft);border-left:3px solid var(--primary);border-radius:12px}
  .tips svg{flex:0 0 auto;color:var(--primary);margin-top:4px}
  .tips h3{font-size:16px;margin-bottom:4px}
  .tips p{font-size:15px;color:#3D5070;max-width:52em}

  /* ---------- 核对清单 ---------- */
  .split{display:grid;gap:32px}
  @media(min-width:1024px){.split{grid-template-columns:5fr 7fr;gap:56px}}
  .split .section-head{margin-bottom:0}
  .checklist{display:grid;gap:14px}
  @media(min-width:768px){.checklist{grid-template-columns:1fr 1fr;gap:16px 20px}}
  .checklist li{display:flex;gap:12px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease)}
  .checklist li:hover{border-color:var(--primary-line);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
  .check-icon{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-top:4px}
  .checklist strong{display:block;font-size:15px;color:var(--heading);margin-bottom:2px}
  .checklist span{font-size:13.5px;color:var(--muted);line-height:1.65}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:820px;margin:0 auto}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:first-child{border-top:1px solid var(--line)}
  .faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;cursor:pointer;list-style:none;font-size:17px;font-weight:600;color:var(--heading);transition:color .2s var(--ease)}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--primary)}
  .faq-icon{flex:0 0 auto;width:24px;height:24px;border-radius:50%;border:1px solid var(--primary-line);color:var(--primary);display:flex;align-items:center;justify-content:center;transition:transform .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease)}
  .faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;border-color:var(--primary)}
  .faq-body{padding:0 44px 22px 0;font-size:15px;line-height:1.9;color:var(--muted)}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;border-radius:20px;overflow:hidden;padding:56px 32px;color:#fff;
    background-image:linear-gradient(120deg,rgba(12,30,58,.9),rgba(12,30,58,.62)),url("/assets/images/backpic/back-3.webp");
    background-size:cover;background-position:center;
  }
  .cta-band h2{color:#fff;max-width:22em}
  .cta-band p{margin-top:14px;font-size:15.5px;color:#D6E0EE;max-width:40em}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
  .cta-band .btn-ghost:hover{background:rgba(255,255,255,.14)}
  @media(max-width:640px){.cta-band{padding:40px 22px}}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--footer-bg);color:#A9B8CE;padding:64px 0 0;margin-top:80px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
  @media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:4fr 2fr 3fr 3fr;gap:48px}}
  .footer-brand .logo-text strong{color:#fff}
  .footer-brand .logo-text em{color:#8FA3C0}
  .footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;max-width:34em;color:#A9B8CE}
  .footer-col h4{color:#fff;margin-bottom:16px}
  .footer-col ul{display:grid;gap:10px}
  .footer-col a{display:inline-block;font-size:14px;color:#A9B8CE;position:relative;transition:color .2s var(--ease),padding-left .2s var(--ease)}
  .footer-col a:hover{color:#8FB6F5;padding-left:8px}
  .footer-col a:hover::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:12px;background:var(--primary);border-radius:2px}
  .footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.7;align-items:flex-start}
  .footer-contact svg{flex:0 0 auto;margin-top:5px;color:#5F87C8}
  .footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7E90AC}
  .footer-bottom a:hover{color:#8FB6F5}