/* roulang page: index */
:root{
  --primary:#0E4A55;
  --primary-dark:#072F37;
  --primary-light:#E6F0F0;
  --accent:#E2703A;
  --bg:#FAFAF8;
  --bg-alt:#F2F5F4;
  --card:#FFFFFF;
  --text:#1C2523;
  --text-2:#55605D;
  --text-3:#8A9491;
  --border:#E3E7E5;
  --border-card:#E9EDEC;
  --border-dash:#D8DEDC;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-1:0 1px 2px rgba(14,74,85,.06);
  --shadow-2:0 8px 24px rgba(14,74,85,.08);
  --shadow-3:0 12px 32px rgba(14,74,85,.12);
  --section-gap:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-bottom:64px;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.1em;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;}
h1{font-size:44px;line-height:1.2;font-weight:700;letter-spacing:.01em;color:var(--text);}
h2{font-size:30px;line-height:1.3;font-weight:600;letter-spacing:.01em;color:var(--text);}
h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--text);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-2);}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;flex-direction:column;line-height:1.14;flex-shrink:0;}
.brand-main{font-size:20px;font-weight:700;color:var(--primary-dark);letter-spacing:.03em;}
.brand-sub{font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:.16em;margin-top:1px;}
.chip-nav{
  display:flex;align-items:center;gap:8px;margin-left:auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:4px 0;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 18px;border-radius:999px;border:1px solid var(--border);
  color:#45514E;font-size:14px;font-weight:500;background:transparent;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.chip:hover{background:rgba(14,74,85,.06);border-color:rgba(14,74,85,.4);color:var(--primary);}
.chip:active{background:rgba(14,74,85,.12);}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;}
.header-actions{
  display:flex;align-items:center;gap:12px;flex-shrink:0;
  padding-left:20px;border-left:1px solid var(--border);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:500;
  padding:13px 28px;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-2);transform:translateY(-1px);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#C95E2C;color:#fff;box-shadow:var(--shadow-2);transform:translateY(-1px);}
.btn-accent:active{transform:none;box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:rgba(14,74,85,.08);color:var(--primary);border-color:var(--primary);}
.btn-ghost:active{background:rgba(14,74,85,.14);}
.btn-sm{padding:9px 20px;font-size:14px;}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);border-radius:10px;color:var(--primary);font-size:15px;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--primary-light);border-color:rgba(14,74,85,.35);}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--border);padding:8px 18px 14px;}
.mobile-menu.is-open{display:flex;flex-direction:column;gap:2px;}
.mobile-menu a{padding:11px 2px;font-size:15px;color:var(--text-2);border-bottom:1px dashed var(--border-dash);}
.mobile-menu a:last-child{border-bottom:0;}

/* ===== Hero ===== */
.hero{padding:96px 0 88px;position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:500;padding:6px 14px;border-radius:999px;letter-spacing:.02em;
}
.badge-pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0;}
.hero-title{margin-top:20px;}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.7;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:28px;font-size:13px;color:var(--text-3);}
.trust-row span{display:inline-flex;align-items:center;}
.trust-row span+span::before{content:"·";margin:0 10px;color:var(--border-dash);font-weight:700;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:20px;overflow:hidden;aspect-ratio:16/10;
  background:var(--bg-alt);box-shadow:var(--shadow-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(250,250,248,.6) 0%,rgba(250,250,248,.12) 42%,rgba(250,250,248,0) 70%);
}
.hero-float{
  position:absolute;left:-24px;bottom:-24px;z-index:2;
  background:#fff;border-radius:16px;padding:16px 18px;
  box-shadow:var(--shadow-2);display:flex;align-items:center;gap:12px;
  max-width:320px;border:1px solid var(--border-card);
  transition:transform .18s ease,box-shadow .18s ease;
}
.hero-float:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);color:inherit;}
.float-icon{
  width:40px;height:40px;border-radius:12px;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;
}
.float-title{font-size:14px;font-weight:600;color:var(--text);line-height:1.4;}
.float-desc{font-size:12px;color:var(--text-3);line-height:1.5;margin-top:2px;}
.float-arrow{margin-left:auto;color:var(--accent);font-size:13px;transition:transform .18s ease;}
.hero-float:hover .float-arrow{transform:translateX(3px);}

/* ===== Section base ===== */
.section{padding:var(--section-gap) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:32px;
}
.section-head-copy{max-width:640px;}
.section-desc{margin-top:10px;font-size:16px;color:var(--text-2);}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;
  color:var(--primary);white-space:nowrap;
}
.link-more i{font-size:12px;transition:transform .18s ease;}
.link-more:hover i{transform:translateX(3px);}

/* ===== Merit ===== */
.merit-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;align-items:stretch;}
.merit-card{
  background:var(--card);border:1px solid var(--border-card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);padding:24px;display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease;
}
.merit-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.merit-media{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--bg-alt);margin-bottom:20px;}
.merit-media img{width:100%;height:100%;object-fit:cover;}
.merit-num{
  font-size:32px;font-weight:700;line-height:1;color:rgba(14,74,85,.22);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.merit-title{font-size:20px;font-weight:600;margin-top:14px;}
.merit-desc{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2);}
.merit-link{margin-top:18px;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--primary);}
.merit-link i{font-size:12px;transition:transform .18s ease;}
.merit-link:hover i{transform:translateX(3px);}
.merit-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.merit-side .merit-card{justify-content:flex-start;}
.merit-icon{
  width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:16px;
}
.merit-side .merit-title{font-size:18px;margin-top:0;}

/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:40px;}
.step{position:relative;padding-bottom:4px;}
.step-dot{
  width:28px;height:28px;border-radius:50%;border:1.5px solid var(--primary);background:#fff;
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:600;margin-bottom:16px;position:relative;z-index:2;
  font-variant-numeric:tabular-nums;
}
.step::after{
  content:"";position:absolute;top:13px;left:34px;right:-24px;
  border-top:1px dashed var(--border-dash);
}
.step:last-child::after{display:none;}
.step-name{font-size:17px;font-weight:600;color:var(--text);}
.step-desc{margin-top:8px;font-size:14px;line-height:1.7;color:var(--text-2);}
.showcase{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);
  box-shadow:inset 0 0 0 1px rgba(14,74,85,.03),var(--shadow-1);
  aspect-ratio:21/9;background:var(--bg-alt);
}
.showcase img{width:100%;height:100%;object-fit:cover;}

/* ===== Social proof ===== */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);margin-bottom:44px;}
.stat-item{padding:8px 28px;position:relative;}
.stat-item:first-child{padding-left:0;}
.stat-item+.stat-item::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--border);
}
.stat-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-num small{font-size:15px;font-weight:500;margin-left:4px;color:var(--text-2);}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{background:var(--bg-alt);border-radius:var(--radius-card);padding:24px;display:flex;flex-direction:column;}
.quote-mark{font-size:26px;line-height:1;color:rgba(14,74,85,.28);margin-bottom:10px;}
.quote-text{font-size:15px;line-height:1.75;color:var(--text-2);}
.quote-person{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:18px;}
.avatar{
  width:36px;height:36px;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex-shrink:0;
}
.person-name{font-size:14px;font-weight:500;color:var(--text);line-height:1.3;}
.person-role{font-size:12px;color:var(--text-3);line-height:1.4;margin-top:2px;}

/* ===== News cards ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--border-card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;color:inherit;
  transition:transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);color:inherit;}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-cover img{transform:scale(1.02);}
.news-body{padding:20px 22px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-tag{
  align-self:flex-start;background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:500;padding:3px 10px;border-radius:999px;
}
.news-title{
  font-size:16.5px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:12px;border-top:1px dashed var(--border-dash);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.news-arrow{color:var(--accent);font-size:13px;transition:transform .18s ease;}
.news-card:hover .news-arrow{transform:translateX(3px);}
.empty-state{
  grid-column:1/-1;min-height:100px;padding:32px;text-align:center;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  background:#fff;border:1px dashed var(--border-dash);border-radius:var(--radius-card);color:var(--text-3);
}
.empty-state i{font-size:22px;}
.empty-state p{font-size:14px;}

/* ===== FAQ ===== */
.faq-wrap{background:var(--bg-alt);border-radius:20px;padding:40px;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--border-card);border-radius:12px;overflow:hidden;}
.faq-q-wrap{margin:0;font-size:16px;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:500;color:var(--text);
  background:none;border:0;text-align:left;line-height:1.55;
}
.faq-q:hover{color:var(--primary);}
.faq-q i{color:var(--primary);font-size:13px;transition:transform .18s ease;flex-shrink:0;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a-inner{padding:16px 22px 20px;border-top:1px dashed var(--border-dash);font-size:15px;line-height:1.8;color:var(--text-2);}

/* ===== CTA band ===== */
.cta-band{
  background:rgba(14,74,85,.08);border-radius:var(--radius-lg);
  padding:48px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-text{max-width:620px;}
.cta-text h2{font-size:28px;}
.cta-text p{margin-top:10px;font-size:16px;color:var(--text-2);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ===== Footer ===== */
.site-footer{background:var(--primary-dark);color:#D9E4E2;margin-top:var(--section-gap);}
.footer-inner{max-width:1200px;margin:0 auto;padding:64px 24px 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(217,228,226,.6);}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(217,228,226,.72);max-width:320px;}
.footer-keyword{margin-top:14px;font-size:13px;color:rgba(217,228,226,.55);letter-spacing:.04em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.06em;}
.footer-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:11px;}
.footer-list a,.footer-list span{font-size:14px;color:#D9E4E2;}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(217,228,226,.18);
  padding:20px 0 24px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:rgba(217,228,226,.7);
}

/* ===== Sticky bar ===== */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;height:64px;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(14,74,85,.08);
  display:flex;align-items:center;
}
.sticky-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;width:100%;
  display:flex;align-items:center;gap:16px;
}
.sticky-text{flex:1;font-size:15px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sticky-text strong{color:var(--primary);font-weight:600;}
.sticky-close{
  width:30px;height:30px;border-radius:50%;border:1px solid var(--border);background:#fff;
  color:var(--text-3);display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;
  transition:background .18s ease,color .18s ease;
}
.sticky-close:hover{background:var(--bg-alt);color:var(--primary);}
.sticky-bar.is-hidden{display:none;}

/* ===== Responsive ===== */
@media (max-width:1199px){
  :root{--section-gap:72px;}
  h1{font-size:38px;}
  h2{font-size:26px;}
  .hero{padding:80px 0 72px;}
  .hero-grid{gap:36px;}
}
@media (max-width:991px){
  h1{font-size:34px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;max-width:640px;}
  .hero-float{left:0;bottom:-20px;}
  .merit-grid{grid-template-columns:1fr;}
  .merit-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .quote-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px 24px;}
  .step:nth-child(2)::after{display:none;}
  .showcase{aspect-ratio:16/9;}
}
@media (max-width:767px){
  :root{--section-gap:52px;}
  body{padding-bottom:60px;font-size:15px;}
  h1{font-size:30px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .container{padding:0 18px;}
  .header-inner{height:auto;flex-wrap:wrap;padding:12px 18px;gap:10px;}
  .brand{flex:1 1 auto;}
  .header-actions{padding-left:0;border-left:0;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .chip-nav{order:3;width:100%;margin-left:0;padding:2px 0 4px;}
  .hero{padding:52px 0 48px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 46%;padding:12px 18px;font-size:14px;}
  .hero-float{position:static;margin-top:-16px;margin-left:12px;margin-right:12px;max-width:none;}
  .trust-row{font-size:12px;}
  .section-head{gap:14px;margin-bottom:24px;}
  .merit-side{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:0;margin-bottom:28px;}
  .step{padding-left:44px;padding-bottom:26px;}
  .step-dot{position:absolute;left:0;top:2px;margin:0;}
  .step::after{
    top:32px;left:13px;right:auto;bottom:0;width:0;
    border-top:0;border-left:1px dashed var(--border-dash);
  }
  .step:nth-child(2)::after{display:block;}
  .step:last-child::after{display:none;}
  .showcase{aspect-ratio:4/3;}
  .stat-row{grid-template-columns:1fr;gap:0;margin-bottom:32px;}
  .stat-item{padding:14px 0;border-bottom:1px solid var(--border);}
  .stat-item:first-child{padding-top:0;}
  .stat-item+.stat-item::before{display:none;}
  .quote-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .faq-wrap{padding:18px;}
  .faq-q{padding:16px 16px;font-size:15px;}
  .faq-a-inner{padding:14px 16px 18px;font-size:14px;}
  .cta-band{padding:28px 22px;gap:20px;}
  .cta-text h2{font-size:22px;}
  .cta-text p{font-size:14px;}
  .cta-actions .btn{width:100%;}
  .footer-inner{padding:44px 18px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px;}
  .footer-brand{grid-column:1/-1;}
  .footer-bottom{font-size:11px;}
  .sticky-bar{height:60px;}
  .sticky-inner{padding:0 14px;gap:10px;}
  .sticky-text{font-size:13px;}
  .sticky-inner .btn-sm{padding:8px 14px;font-size:13px;white-space:nowrap;}
}
@media (max-width:419px){
  .hero-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-main{font-size:18px;}
}

/* roulang page: category1 */
:root{
  --primary:#0E4A55;
  --primary-dark:#072F37;
  --primary-light:#E6F0F0;
  --accent:#E2703A;
  --bg:#FAFAF8;
  --bg-alt:#F2F5F4;
  --card:#FFFFFF;
  --text:#1C2523;
  --text-2:#55605D;
  --text-3:#8A9491;
  --border:#E3E7E5;
  --border-soft:#E9EDEC;
  --dash:#D8DEDC;
  --ok:#2E7D53;
  --warn:#B4451F;
  --r-card:16px;
  --r-lg:20px;
  --r-xl:24px;
  --r-btn:999px;
  --sh1:0 1px 2px rgba(14,74,85,.06);
  --sh2:0 8px 24px rgba(14,74,85,.08);
  --sh3:0 12px 32px rgba(14,74,85,.12);
  --container:1200px;
  --section:96px;
  --t:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:96px;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.15em}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--primary-dark)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:var(--primary-light);color:var(--primary-dark)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding-top:var(--section)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.06em;color:var(--primary);background:var(--primary-light);border-radius:var(--r-btn);padding:5px 14px;margin-bottom:14px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
h1{font-size:44px;line-height:1.22;font-weight:700;letter-spacing:.01em;color:var(--primary-dark)}
h2{font-size:30px;line-height:1.3;font-weight:600;letter-spacing:.01em;color:var(--text)}
h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--text)}
.lead{font-size:18px;line-height:1.7;color:var(--text-2)}
.muted{color:var(--text-3);font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;color:var(--primary)}
.text-link i{transition:transform var(--t)}
.text-link:hover i{transform:translateX(2px)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:13px 28px;font-size:15px;font-weight:500;
  border:1px solid transparent;cursor:pointer;transition:all var(--t);white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--sh2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:rgba(14,74,85,.08);color:var(--primary-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#c85f2c;color:#fff;box-shadow:var(--sh2);transform:translateY(-1px)}
.btn-sm{padding:9px 20px;font-size:14px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--border);
  box-shadow:var(--sh1);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh2);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.08;flex:0 0 auto}
.brand-main{font-size:19px;font-weight:700;color:var(--primary-dark);letter-spacing:.01em}
.brand-sub{font-size:11px;font-weight:500;color:var(--text-2);letter-spacing:.1em;margin-top:3px}
.chip-nav{
  display:flex;align-items:center;gap:8px;
  margin-left:auto;padding-right:18px;
  border-right:1px solid var(--border);
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  padding:8px 18px;border-radius:var(--r-btn);
  border:1px solid var(--border);
  font-size:14px;font-weight:500;color:#45514E;background:transparent;
  transition:all var(--t);
}
.chip:hover{background:rgba(14,74,85,.06);border-color:rgba(14,74,85,.4);color:var(--primary-dark)}
.chip.is-active{background:var(--primary);color:#fff;border-color:transparent;box-shadow:none}
.chip.is-active:hover{background:var(--primary-dark);color:#fff}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.burger{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;color:var(--primary);
  cursor:pointer;transition:all var(--t);
}
.burger:hover{background:var(--primary-light);border-color:rgba(14,74,85,.3)}
.mobile-panel{
  display:none;border-top:1px solid var(--border);background:#fff;
}
.mobile-panel.is-open{display:block}
.mobile-panel ul{list-style:none;margin:0;padding:10px 0 16px}
.mobile-panel li{border-bottom:1px dashed var(--dash)}
.mobile-panel li:last-child{border-bottom:0}
.mobile-panel a{display:block;padding:12px 4px;font-size:15px;color:var(--text-2)}
.mobile-panel a:hover{color:var(--primary)}

/* ---------- Breadcrumb ---------- */
.crumb{padding-top:22px;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--dash)}
.crumb .current{color:var(--text-3)}

/* ---------- Category hero ---------- */
.cat-hero{
  margin-top:20px;
  background:var(--primary-light);
  border-radius:var(--r-xl);
  padding:48px;
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:40px;align-items:center;
}
.cat-hero h1{margin-bottom:18px}
.cat-hero .lead{max-width:520px;margin-bottom:24px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;background:#DDE6E4;box-shadow:var(--sh2)}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-figure figcaption{
  position:absolute;left:14px;bottom:14px;right:14px;
  background:rgba(255,255,255,.92);
  border-radius:12px;padding:10px 14px;font-size:13px;color:var(--text-2);
  box-shadow:var(--sh1);
}

/* ---------- Steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.step-card{
  background:var(--card);border:1px solid var(--border-soft);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh1);transition:transform var(--t),box-shadow var(--t);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.step-num{font-size:32px;font-weight:700;line-height:1;color:rgba(14,74,85,.28);font-variant-numeric:tabular-nums}
.step-card h3{margin:14px 0 8px;font-size:18px}
.step-card p{font-size:15px;color:var(--text-2);line-height:1.7}
.step-track{display:flex;align-items:center;gap:10px;margin-top:16px}
.step-track .dot{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--primary);background:#fff;color:var(--primary);font-size:13px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.step-track .line{flex:1;height:0;border-top:1px dashed var(--dash)}

/* ---------- Brief cards ---------- */
.brief-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.brief-card{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--card);border:1px solid var(--border-soft);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh1);
  transition:transform var(--t),box-shadow var(--t);
}
.brief-card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.thumb{flex:0 0 132px;border-radius:12px;overflow:hidden;background:#EDEFEE}
.thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
.brief-body{min-width:0;display:flex;flex-direction:column;height:100%}
.brief-body h3{font-size:16.5px;line-height:1.5;margin-bottom:8px}
.brief-body p{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:12px}
.brief-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px dashed var(--dash);font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.brief-meta a{display:inline-flex;align-items:center;color:var(--primary);font-size:13px}
.brief-meta a i{transition:transform var(--t)}
.brief-meta a:hover i{transform:translateX(2px)}

/* ---------- Notice ---------- */
.notice-card{
  border:1px solid var(--border);border-radius:var(--r-card);
  background:#fff;padding:26px 24px;box-shadow:var(--sh1);
  display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:flex-start;
}
.notice-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px}
.notice-card h3{margin-bottom:10px;font-size:18px}
.notice-card ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.notice-card li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2)}
.notice-card li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--bg-alt);border-radius:var(--r-xl);padding:40px}
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border-radius:12px;border:1px solid var(--border-soft);overflow:hidden;transition:box-shadow var(--t)}
.faq-item.is-open{box-shadow:var(--sh2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:18px 22px;text-align:left;cursor:pointer;
  font-size:16px;font-weight:500;color:var(--text);transition:color var(--t);
}
.faq-q:hover{color:var(--primary)}
.faq-q .arrow{flex:0 0 auto;color:var(--primary);transition:transform 180ms ease;font-size:14px}
.faq-item.is-open .faq-q .arrow{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 180ms ease}
.faq-a-inner{padding:0 22px 20px;border-top:1px dashed var(--dash);margin-top:0;padding-top:14px;font-size:15px;color:var(--text-2)}

/* ---------- CTA band ---------- */
.cta-band{
  background:rgba(14,74,85,.08);
  border-radius:var(--r-xl);
  padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:620px}

/* ---------- Fixed bar ---------- */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -6px 20px rgba(14,74,85,.08);
  height:64px;display:flex;align-items:center;
}
.fixed-bar .bar-inner{display:flex;align-items:center;gap:18px;width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.bar-text{font-size:15px;color:var(--text-2);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar-text strong{color:var(--primary-dark);font-weight:600}
.bar-actions{margin-left:auto;display:flex;align-items:center;gap:14px;flex:0 0 auto}
.bar-close{width:30px;height:30px;border-radius:50%;border:1px solid var(--border);background:#fff;color:var(--text-3);cursor:pointer;transition:all var(--t);display:inline-flex;align-items:center;justify-content:center;font-size:12px}
.bar-close:hover{color:var(--primary);border-color:rgba(14,74,85,.4);background:var(--primary-light)}

/* ---------- Footer ---------- */
.site-footer{background:var(--primary-dark);color:#D9E4E2;margin-top:var(--section);padding:64px 0 26px}
.footer-inner{max-width:var(--container);margin:0 auto;padding:0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:38px}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:rgba(217,228,226,.72)}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(217,228,226,.78);max-width:330px}
.footer-keyword{margin-top:14px;font-size:12.5px;letter-spacing:.02em;color:rgba(217,228,226,.56)}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:14px}
.footer-list a{color:rgba(217,228,226,.78)}
.footer-list a:hover{color:#fff}
.footer-list span{color:rgba(217,228,226,.62);line-height:1.7}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(217,228,226,.16);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12px;color:rgba(217,228,226,.7);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  :root{--section:72px}
  h1{font-size:38px}
  .cat-hero{padding:40px;gap:30px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}
@media (max-width:991px){
  .header-cta{display:none}
  .burger{display:inline-flex}
  .chip-nav{border-right:0;padding-right:0}
  .cat-hero{grid-template-columns:1fr;padding:34px}
  .hero-figure img{aspect-ratio:16/9}
  .step-grid{grid-template-columns:1fr}
  .brief-grid{grid-template-columns:1fr}
  .cta-band{padding:34px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--section:52px}
  body{padding-bottom:84px;font-size:15.5px}
  .container{padding:0 18px}
  h1{font-size:30px}
  h2{font-size:23px}
  .header-inner{height:64px;gap:12px}
  .brand-main{font-size:16px}
  .brand-sub{font-size:10px}
  .chip{font-size:13px;padding:7px 14px}
  .header-cta{display:none}
  .cat-hero{padding:26px 20px;border-radius:var(--r-lg);gap:24px}
  .cat-hero .lead{font-size:16px}
  .hero-cta .btn{flex:1 1 auto}
  .step-card{padding:22px 18px}
  .brief-card{flex-direction:column;gap:14px}
  .thumb{flex:0 0 auto;width:100%}
  .thumb img{aspect-ratio:16/9}
  .faq-wrap{padding:20px;border-radius:var(--r-lg)}
  .faq-q{font-size:15px;padding:16px 16px}
  .faq-a-inner{padding:14px 16px 18px}
  .cta-band{padding:26px 20px;border-radius:var(--r-lg)}
  .cta-band .btn{width:100%}
  .fixed-bar{height:60px}
  .fixed-bar .bar-inner{padding:0 16px;gap:10px}
  .bar-text{font-size:13px;max-width:52%}
  .bar-actions .btn-sm{padding:8px 16px;font-size:13px}
  .notice-card{grid-template-columns:1fr;padding:22px 18px}
  .site-footer{padding:48px 0 22px;margin-top:var(--section)}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:419px){
  h1{font-size:26px}
  .bar-close{display:none}
  .brand-sub{letter-spacing:.06em}
}

/* roulang page: article */
:root{
  --brand:#0E4A55;
  --brand-dark:#072F37;
  --brand-light:#E6F0F0;
  --accent:#E2703A;
  --bg:#FAFAF8;
  --bg-alt:#F2F5F4;
  --card:#FFFFFF;
  --text:#1C2523;
  --text-2:#55605D;
  --text-3:#8A9491;
  --border:#E3E7E5;
  --border-dash:#D8DEDC;
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(14,74,85,.06);
  --shadow-2:0 8px 24px rgba(14,74,85,.08);
  --shadow-3:0 12px 32px rgba(14,74,85,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
  --space:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:64px;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd{margin:0;}
ul,ol{padding-left:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:var(--brand-light);color:var(--brand-dark);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-2);background:rgba(255,255,255,.97);}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{display:inline-flex;flex-direction:column;justify-content:center;line-height:1.12;flex-shrink:0;}
.brand-main{font-size:17px;font-weight:700;color:var(--brand-dark);letter-spacing:.01em;}
.brand-sub{font-size:11px;font-weight:500;color:var(--text-2);letter-spacing:.14em;margin-top:2px;}
.brand:hover .brand-main{color:var(--brand);}
.chip-nav{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding-right:20px;
  border-right:1px solid var(--border);
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;
  align-items:center;
  flex:0 0 auto;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid var(--border);
  background:transparent;
  color:#45514E;
  font-size:14px;
  font-weight:500;
  line-height:1.4;
  white-space:nowrap;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.chip:hover{background:rgba(14,74,85,.06);border-color:rgba(14,74,85,.4);color:var(--brand-dark);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
.chip.is-active:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:20px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--brand);}
.nav-toggle:hover{border-color:rgba(14,74,85,.4);background:rgba(14,74,85,.04);}
.mobile-menu{
  border-top:1px solid var(--border);
  background:#fff;
  padding:14px 24px 18px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.mobile-menu a{
  display:block;
  padding:11px 14px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  background:var(--bg-alt);
}
.mobile-menu a:hover{background:var(--brand-light);color:var(--brand-dark);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 28px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  line-height:1;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--shadow-3);transform:translateY(-1px);}
.btn-primary:active{transform:none;box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:rgba(14,74,85,.08);color:var(--brand-dark);}
.btn-sm{padding:10px 20px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--brand);}
.link-arrow .arw{transition:transform .18s ease;}
.link-arrow:hover .arw{transform:translateX(3px);}

/* ===== 文章头部 ===== */
.article-hero{
  position:relative;
  padding:44px 0 44px;
  background:
    linear-gradient(180deg,rgba(250,250,248,.94) 0%,rgba(250,250,248,.99) 62%,var(--bg) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--border-dash);}
.breadcrumb .current{color:var(--text-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:40px;
  line-height:1.26;
  font-weight:700;
  letter-spacing:.005em;
  color:var(--text);
  max-width:900px;
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.meta-chip{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand);
  font-size:12px;
  font-weight:500;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--border-dash);}
.article-lead{
  margin-top:26px;
  max-width:860px;
  background:rgba(230,240,240,.72);
  border-left:3px solid var(--brand);
  border-radius:12px;
  padding:16px 20px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
}

/* ===== 正文双栏 ===== */
.article-main{padding:56px 0 var(--space);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;
  align-items:start;
}
.article-panel{
  background:var(--card);
  border:1px solid #E9EDEC;
  border-radius:var(--radius);
  box-shadow:var(--shadow-2);
  padding:40px;
}
.article-body{max-width:760px;font-size:16.5px;line-height:1.9;color:#2A3331;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.05em;font-size:16.5px;line-height:1.9;color:#2A3331;}
.article-body h2{
  font-size:24px;
  line-height:1.45;
  font-weight:600;
  color:var(--text);
  border-left:4px solid var(--brand);
  padding-left:12px;
  margin:36px 0 16px;
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--text);margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:22px 0 10px;}
.article-body ul{margin:0 0 1.05em;padding-left:0;list-style:none;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em;line-height:1.9;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;top:.78em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  opacity:.75;
}
.article-body ol{margin:0 0 1.05em;padding-left:0;list-style:none;counter-reset:artnum;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:.55em;line-height:1.9;counter-increment:artnum;}
.article-body ol li::before{
  content:counter(artnum);
  position:absolute;
  left:0;top:.28em;
  width:22px;height:22px;
  border-radius:50%;
  background:var(--brand-light);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  line-height:22px;
  text-align:center;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;
  background:#EFF6F6;
  border-left:3px solid var(--accent);
  border-radius:8px;
  padding:20px 22px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px 0 10px;width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--brand-dark);}
.article-body strong{font-weight:600;color:var(--text);}
.article-body hr{border:0;border-top:1px dashed var(--border-dash);margin:32px 0;}
.article-body table{width:100%;display:block;overflow-x:auto;margin:20px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-alt);font-weight:600;}

/* 空态 */
.article-empty{text-align:center;padding:56px 20px;}
.empty-icon{
  width:64px;height:64px;
  margin:0 auto 18px;
  border-radius:18px;
  background:var(--bg-alt);
  color:var(--text-3);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:600;
}
.empty-title{font-size:20px;font-weight:600;color:var(--text);margin-bottom:10px;}
.empty-note{font-size:15px;color:var(--text-2);max-width:460px;margin:0 auto 22px;line-height:1.8;}

/* ===== 侧栏 ===== */
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px;}
.side-card{
  background:var(--card);
  border:1px solid #E9EDEC;
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  padding:24px;
}
.side-title{
  font-size:16px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--accent);}
.side-list li + li{border-top:1px solid var(--border);margin-top:12px;padding-top:12px;}
.side-list a{display:block;font-size:15px;line-height:1.6;color:var(--text);}
.side-list a:hover{color:var(--brand);}
.side-list .side-time{display:block;font-size:12px;color:var(--text-3);margin-top:6px;font-variant-numeric:tabular-nums;}
.side-note{
  background:var(--brand-light);
  border:0;
  color:var(--brand-dark);
}
.side-note .side-title{color:var(--brand-dark);}
.side-note .side-title::before{background:var(--brand);}
.side-note p{font-size:14px;line-height:1.8;color:#2D4C52;}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.side-tag{
  display:inline-flex;align-items:center;
  padding:6px 12px;
  border-radius:999px;
  background:#fff;
  border:1px solid rgba(14,74,85,.16);
  color:var(--brand);
  font-size:12px;
  font-weight:500;
  transition:background .18s ease,border-color .18s ease;
}
.side-tag:hover{background:#fff;border-color:rgba(14,74,85,.45);color:var(--brand-dark);}

/* ===== 文末操作区 ===== */
.article-actions{
  max-width:760px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px dashed var(--border-dash);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

/* ===== 相关推荐 ===== */
.related-section{padding:0 0 var(--space);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{font-size:30px;line-height:1.3;font-weight:600;color:var(--text);}
.section-head .sub{font-size:15px;color:var(--text-2);margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid #E9EDEC;
  border-radius:var(--radius);
  box-shadow:var(--shadow-2);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);}
.card-media{position:relative;aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-body{padding:22px 24px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-chip{
  align-self:flex-start;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand);
  font-size:12px;
  font-weight:500;
}
.card-title{font-size:17px;line-height:1.5;font-weight:600;color:var(--text);}
.card-title a{color:inherit;}
.card-title a:hover{color:var(--brand);}
.card-desc{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px dashed var(--border-dash);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ===== CTA 带 ===== */
.cta-band{padding:0 0 var(--space);}
.cta-inner{
  background:rgba(14,74,85,.08);
  border-radius:var(--radius-lg);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:28px;line-height:1.35;font-weight:600;color:var(--brand-dark);}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:560px;line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ===== 底部固定条 ===== */
.fixed-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:55;
  background:#fff;
  border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(14,74,85,.08);
  height:64px;
  display:flex;
  align-items:center;
}
.fixed-bar-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
}
.fixed-text{
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  flex:1 1 auto;
  min-width:0;
}
.fixed-text strong{color:var(--brand-dark);font-weight:600;}
.fixed-close{
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text-3);
  font-size:15px;
  line-height:1;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
  transition:border-color .18s ease,color .18s ease;
}
.fixed-close:hover{border-color:rgba(14,74,85,.4);color:var(--brand);}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-dark);color:#D9E4E2;padding:64px 0 0;margin-top:0;}
.footer-inner{max-width:var(--container);margin:0 auto;padding:0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-main{color:#fff;font-size:18px;}
.footer-brand .brand-sub{color:#9FB8B4;}
.footer-about{font-size:14px;line-height:1.85;color:#B9CBC8;margin-bottom:12px;}
.footer-keyword{font-size:12px;color:#8CA5A1;letter-spacing:.02em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list li{margin-bottom:10px;font-size:14px;color:#B9CBC8;line-height:1.7;}
.footer-list a{color:#B9CBC8;}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(217,228,226,.7);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--space:80px;}
  .article-title{font-size:34px;}
  .article-panel{padding:32px;}
}
@media (max-width:991px){
  :root{--space:72px;}
  .header-inner{height:66px;gap:14px;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;}
  .chip-nav{border-right:0;padding-right:0;margin-left:12px;}
  .header-actions{margin-left:12px;}
  .article-hero{padding:32px 0 36px;}
  .article-title{font-size:30px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .side-col{position:static;top:auto;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-inner{padding:36px;gap:24px;}
}
@media (max-width:767px){
  :root{--space:52px;}
  body{padding-bottom:60px;}
  .container,.header-inner,.footer-inner,.fixed-bar-inner{padding-left:18px;padding-right:18px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:10px;letter-spacing:.1em;}
  .chip{padding:7px 14px;font-size:13px;}
  .article-hero{padding:26px 0 30px;}
  .article-title{font-size:26px;line-height:1.32;}
  .article-lead{font-size:15px;padding:14px 16px;}
  .article-main{padding:36px 0 var(--space);}
  .article-panel{padding:22px 18px;}
  .article-body,.article-body p{font-size:16px;}
  .article-body h2{font-size:21px;margin:28px 0 14px;}
  .article-body h3{font-size:18px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .section-head h2{font-size:23px;}
  .cta-inner{padding:26px 22px;border-radius:20px;}
  .cta-inner h2{font-size:22px;}
  .fixed-bar{height:60px;}
  .fixed-text{font-size:13px;}
  .fixed-bar .btn{padding:10px 18px;font-size:13px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:34px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:419px){
  .article-title{font-size:23px;}
  .chip{padding:6px 12px;font-size:12px;}
  .nav-toggle{width:38px;height:38px;}
  .card-body{padding:18px;}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --primary:#0E4A55;
  --primary-dark:#072F37;
  --primary-light:#E6F0F0;
  --accent:#E2703A;
  --bg:#FAFAF8;
  --bg-alt:#F2F5F4;
  --card:#FFFFFF;
  --text:#1C2523;
  --text-mid:#55605D;
  --text-weak:#8A9491;
  --border:#E3E7E5;
  --border-dash:#D8DEDC;
  --success:#2E7D53;
  --warn:#B4451F;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,74,85,.06);
  --sh-2:0 8px 24px rgba(14,74,85,.08);
  --sh-3:0 12px 32px rgba(14,74,85,.12);
  --sec:96px;
  --maxw:1200px;
  --ease:cubic-bezier(.25,.6,.3,1);
}

/* ================= 基础 reset ================= */
*,*::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,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{list-style:none;padding:0;}
img{display:block;max-width:100%;}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;}
::selection{background:var(--primary-light);color:var(--primary-dark);}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding-bottom:var(--sec);}
.section-tight{padding-bottom:calc(var(--sec) * .75);}

/* ================= 栅格微调 ================= */
.row{display:flex;flex-wrap:wrap;align-items:flex-start;max-width:1224px;margin-left:auto;margin-right:auto;}
.row .columns{float:none;padding-left:12px;padding-right:12px;}

/* ================= 头部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:72px;max-width:1224px;margin:0 auto;padding:0 12px;
}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.12;flex:none;}
.brand-main{font-size:19px;font-weight:700;color:var(--primary);letter-spacing:.01em;}
.brand-sub{font-size:11px;font-weight:500;color:var(--text-weak);letter-spacing:.16em;}
.chip-nav{
  display:flex;align-items:center;gap:8px;
  flex:0 1 auto;min-width:0;
  padding-right:22px;margin-left:2px;
  border-right:1px solid var(--border);
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 18px;border-radius:var(--r-pill);
  border:1px solid var(--border);background:transparent;
  color:#45514E;font-size:14px;font-weight:500;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.chip:hover{background:rgba(14,74,85,.06);border-color:rgba(14,74,85,.4);color:var(--primary);}
.chip.is-active{background:var(--primary);color:#fff;border-color:transparent;box-shadow:none;}
.chip.is-active:hover{background:var(--primary-dark);color:#fff;}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:10px;flex:none;}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:500;padding:13px 28px;
  cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--sh-2);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:rgba(14,74,85,.08);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-sm{padding:9px 18px;font-size:14px;}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--primary);}
.arrow-link i{transition:transform .2s var(--ease);font-size:12px;}
.arrow-link:hover i{transform:translateX(3px);}

/* ================= 图片容器 ================= */
.media{position:relative;overflow:hidden;border-radius:var(--r-card);background:var(--bg-alt);}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.media-16x9{aspect-ratio:16/9;}
.media-4x3{aspect-ratio:4/3;}
.media-16x10{aspect-ratio:16/10;}

/* ================= 面包屑 ================= */
.crumb-bar{padding:26px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-weak);}
.crumb a{color:var(--text-mid);}
.crumb a:hover{color:var(--primary);}
.crumb i{font-size:9px;color:var(--border-dash);}
.crumb .current{color:var(--text-weak);}

/* ================= 栏目介绍条 ================= */
.page-intro{padding:24px 0 0;}
.intro-panel{
  position:relative;overflow:hidden;
  background:var(--primary-light);
  border-radius:var(--r-lg);
  padding:46px 44px;
}
.intro-panel::after{
  content:"";position:absolute;right:-70px;top:-70px;
  width:250px;height:250px;border-radius:50%;
  background:rgba(14,74,85,.05);pointer-events:none;
}
.intro-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:40px;align-items:center;position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;color:var(--primary);
  font-size:12px;font-weight:500;letter-spacing:.03em;
  padding:6px 14px;border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.intro-panel h1{
  font-size:42px;line-height:1.22;font-weight:700;color:var(--primary-dark);
  margin:18px 0 14px;letter-spacing:.01em;
}
.intro-panel h1 span{display:block;font-size:20px;font-weight:600;color:var(--primary);margin-top:10px;letter-spacing:.02em;}
.intro-sub{font-size:17px;line-height:1.7;color:var(--text-mid);max-width:32em;}
.intro-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.85);color:var(--primary);
  font-size:12px;font-weight:500;padding:6px 12px;border-radius:var(--r-pill);
}
.badge i{font-size:11px;color:var(--accent);}
.intro-media{border-radius:20px;overflow:hidden;box-shadow:var(--sh-2);}

/* ================= 数据概览条 ================= */
.stat-strip{
  display:flex;align-items:stretch;
  background:var(--card);border:1px solid #E9EDEC;border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  margin-top:24px;padding:22px 8px;
}
.stat-cell{flex:1 1 0;text-align:center;padding:2px 16px;}
.stat-cell + .stat-cell{border-left:1px solid var(--border);}
.stat-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.2;}
.stat-num small{font-size:14px;font-weight:500;color:var(--text-mid);margin-left:4px;}
.stat-label{font-size:13px;color:var(--text-weak);margin-top:4px;}

/* ================= 主次双栏 ================= */
.layout-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap;}
.layout-head h2{font-size:30px;line-height:1.3;font-weight:600;color:var(--text);}
.layout-head p{font-size:14px;color:var(--text-weak);margin-top:6px;}

.feature-card{
  background:var(--card);border:1px solid #E9EDEC;border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.feature-card:hover .media img{transform:scale(1.02);}
.feature-body{padding:22px 24px 20px;}
.tag{
  display:inline-block;background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:500;padding:4px 11px;border-radius:var(--r-pill);
}
.feature-body h3{font-size:20px;line-height:1.45;font-weight:600;margin:12px 0 8px;color:var(--text);}
.feature-body p{font-size:14.5px;line-height:1.75;color:var(--text-mid);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feature-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px dashed var(--border-dash);
}
.feature-foot time{font-size:13px;color:var(--text-weak);}
.feature-card + .feature-card{margin-top:22px;}

/* --------- 窄栏 --------- */
.side-card{
  background:var(--card);border:1px solid #E9EDEC;border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px 20px;
}
.side-card + .side-card{margin-top:20px;}
.side-title{font-size:15px;font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px;margin-bottom:6px;}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent);}
.side-list{margin-top:6px;}
.side-item{display:block;padding:13px 0;border-bottom:1px dashed var(--border-dash);}
.side-item:last-child{border-bottom:none;padding-bottom:2px;}
.side-item time{display:block;font-size:12px;color:var(--text-weak);margin-bottom:3px;}
.side-item span{display:block;font-size:14.5px;line-height:1.6;color:var(--text);}
.side-item:hover span{color:var(--primary);}
.side-note{background:var(--bg-alt);border:1px solid var(--border);}
.side-note h3{font-size:15px;font-weight:600;color:var(--primary-dark);margin-bottom:8px;}
.side-note p{font-size:13.5px;line-height:1.8;color:var(--text-mid);}

/* ================= 专题标签 ================= */
.topic-block{
  background:var(--primary-dark);border-radius:var(--r-lg);
  padding:38px 40px;color:#D9E4E2;
}
.topic-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:22px;}
.topic-head h2{font-size:26px;line-height:1.35;font-weight:600;color:#fff;}
.topic-head p{font-size:13.5px;color:rgba(217,228,226,.72);margin-top:6px;}
.topic-scroll{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin;}
.topic-scroll::-webkit-scrollbar{height:5px;}
.topic-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);border-radius:3px;}
.topic-chip{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#EAF2F1;font-size:14px;font-weight:500;white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.topic-chip:hover{background:rgba(226,112,58,.9);border-color:rgba(226,112,58,1);color:#fff;transform:translateY(-1px);}
.topic-chip i{font-size:12px;opacity:.8;}

/* ================= FAQ ================= */
.faq-wrap{background:var(--bg-alt);border-radius:20px;padding:38px 36px;}
.faq-wrap > h2{font-size:28px;line-height:1.35;font-weight:600;margin-bottom:8px;}
.faq-wrap > p{font-size:14.5px;color:var(--text-mid);margin-bottom:24px;}
.faq-item{
  background:var(--card);border-radius:12px;border:1px solid #E9EDEC;
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item + .faq-item{margin-top:12px;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:none;text-align:left;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:500;color:var(--text);line-height:1.6;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-q i{font-size:12px;color:var(--primary);transition:transform .18s var(--ease);flex:none;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a-inner{padding:0 22px 18px;font-size:15px;line-height:1.85;color:var(--text-mid);border-top:1px dashed var(--border-dash);padding-top:14px;margin-top:0;}

/* ================= CTA 带 ================= */
.cta-band{
  background:rgba(14,74,85,.08);
  border-radius:var(--r-lg);
  padding:42px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;line-height:1.35;font-weight:600;color:var(--primary-dark);}
.cta-band p{font-size:15px;color:var(--text-mid);margin-top:8px;max-width:44em;}

/* ================= 页脚 ================= */
.site-footer{background:var(--primary-dark);color:#D9E4E2;margin-top:8px;}
.footer-inner{max-width:1224px;margin:0 auto;padding:64px 24px 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.site-footer .brand{margin-bottom:14px;}
.site-footer .brand-main{color:#fff;font-size:19px;}
.site-footer .brand-sub{color:rgba(217,228,226,.6);}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(217,228,226,.75);max-width:26em;}
.footer-keyword{font-size:12.5px;color:rgba(217,228,226,.52);margin-top:12px;letter-spacing:.02em;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-list li{font-size:13.5px;line-height:1.9;color:rgba(217,228,226,.72);margin-bottom:6px;}
.footer-list a{color:rgba(217,228,226,.72);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:12px;color:rgba(217,228,226,.7);
}

/* ================= 响应式 ================= */
@media (max-width:1199px){
  :root{--sec:80px;}
  .intro-panel h1{font-size:36px;}
}
@media (max-width:991px){
  :root{--sec:72px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .intro-media{order:-1;}
  .intro-panel{padding:36px 32px;}
  .intro-panel h1{font-size:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .layout-head h2{font-size:26px;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:767px){
  :root{--sec:52px;}
  .container{padding:0 18px;}
  .header-inner{height:64px;gap:12px;}
  .brand-main{font-size:17px;}
  .brand-sub{font-size:10px;letter-spacing:.1em;}
  .chip{padding:7px 14px;font-size:13px;}
  .chip-nav{padding-right:14px;}
  .intro-panel{padding:28px 22px;border-radius:20px;}
  .intro-panel h1{font-size:27px;}
  .intro-panel h1 span{font-size:16px;}
  .intro-sub{font-size:15px;}
  .stat-strip{flex-direction:column;padding:8px;}
  .stat-cell{padding:14px 12px;text-align:left;display:flex;align-items:baseline;gap:10px;}
  .stat-cell + .stat-cell{border-left:none;border-top:1px solid var(--border);}
  .stat-num{font-size:24px;}
  .stat-label{margin-top:0;font-size:13px;}
  .layout-head h2{font-size:23px;}
  .feature-body{padding:18px;}
  .feature-body h3{font-size:18px;}
  .topic-block{padding:26px 22px;}
  .topic-head h2{font-size:22px;}
  .faq-wrap{padding:26px 20px;border-radius:16px;}
  .faq-wrap > h2{font-size:22px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:12px 18px 16px;font-size:14px;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:21px;}
  .footer-inner{padding:44px 18px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:560px){
  .header-cta .btn{display:none;}
  .intro-panel h1{font-size:24px;}
}
@media (max-width:420px){
  .brand-main{font-size:16px;}
  .chip{padding:6px 12px;font-size:12.5px;}
}