/* roulang page: index */
:root{
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAF2F3;
  --ink:#12232B;
  --ink-2:#4A5F68;
  --ink-3:#7E9299;
  --primary:#0E7C8C;
  --primary-deep:#0A5C69;
  --primary-tint:#E3F1F3;
  --accent:#FF6B35;
  --accent-deep:#E2551F;
  --accent-soft:#FFEDE5;
  --line:#DCE6E8;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(18,35,43,.05),0 8px 24px -12px rgba(14,124,140,.18);
  --shadow-hover:0 14px 32px -14px rgba(14,124,140,.30);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary-deep);text-decoration:none;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease,transform .18s ease;}
a:hover{color:var(--primary-deep);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.15em;}
button{font:inherit;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(255,107,53,.40);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--muted{background:var(--surface-2);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(18,35,43,.45);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:68px;padding-top:8px;padding-bottom:8px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-deep) 100%);
  display:flex;align-items:center;justify-content:center;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;width:26px;height:26px;border-radius:50%;
  border:2px solid rgba(255,255,255,.92);border-right-color:transparent;border-top-color:transparent;
  transform:rotate(-30deg);
}
.brand-mark::before{
  content:"";position:absolute;width:14px;height:14px;border-radius:50%;
  background:var(--accent);opacity:.95;top:9px;left:9px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.08em;}
.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:6px;overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 14px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;color:var(--ink-2);
  background:transparent;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--primary-tint);color:var(--primary-deep);}
.chip.is-active{
  background:var(--primary-tint);color:var(--primary-deep);
  border-color:var(--primary);font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;border-radius:var(--radius-pill);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(255,107,53,.85);}
.btn-ghost{background:#fff;color:var(--primary-deep);border-color:var(--line);}
.btn-ghost:hover{background:var(--primary-tint);color:var(--primary-deep);}
.btn-soft{background:var(--primary-deep);color:#fff;}
.btn-soft:hover{background:#084c57;color:#fff;transform:translateY(-1px);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;color:var(--primary-deep);
}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-panel.is-open{display:block;}
.mobile-panel-inner{padding:14px 0 20px;display:flex;flex-direction:column;gap:8px;}
.mobile-panel .chip{justify-content:flex-start;width:100%;border-radius:var(--radius-sm);padding:12px 14px;font-size:15px;}
.mobile-panel-actions{display:flex;gap:10px;margin-top:6px;flex-wrap:wrap;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);
  padding:72px 0 76px;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--radius-pill);
  background:var(--primary-tint);color:var(--primary-deep);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);}
h1.hero-title{
  margin-top:22px;
  font-size:40px;line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--ink);
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.stat-pill{
  display:inline-flex;align-items:baseline;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:10px 16px;box-shadow:var(--shadow-card);
}
.stat-pill b{font-size:18px;font-weight:700;color:var(--primary-deep);letter-spacing:.02em;}
.stat-pill span{font-size:13px;color:var(--ink-2);}
.hero-visual{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:0 20px 44px -26px rgba(14,124,140,.55);}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-badge{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.94);border-radius:var(--radius-sm);
  padding:10px 14px;font-size:13px;color:var(--ink);font-weight:600;
  border:1px solid var(--line);
}

/* ---------- section head ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-title{
  position:relative;padding-left:14px;
  font-size:28px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.01em;
}
.section-title::before{content:"";position:absolute;left:0;top:8px;width:3px;height:20px;border-radius:2px;background:var(--accent);}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:44em;}
.section-head .section-sub{margin-top:0;}

/* ---------- feature grid 一大两小 ---------- */
.feature-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;align-items:stretch;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#C9DADC;}
.feature-main{display:flex;flex-direction:column;overflow:hidden;}
.feature-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.feature-main-body{padding:26px 26px 28px;}
.feature-main h3{font-size:20px;font-weight:700;color:var(--ink);line-height:1.5;}
.feature-main p{margin-top:12px;font-size:15px;color:var(--ink-2);}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.feature-side .card{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;}
.icon-square{
  width:42px;height:42px;border-radius:12px;background:var(--primary-tint);
  display:flex;align-items:center;justify-content:center;color:var(--primary-deep);
}
.icon-square svg{width:22px;height:22px;}
.feature-side h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5;}
.feature-side p{font-size:14px;color:var(--ink-2);}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-deep);}
.text-link:hover{text-decoration:underline;text-underline-offset:3px;}
.text-link::after{content:"›";font-size:16px;line-height:1;}

/* ---------- data strip ---------- */
.data-strip{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(268px,1fr);
  gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:8px 4px 24px;scrollbar-width:thin;
}
.data-card{
  scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;
}
.data-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.badge{
  display:inline-block;padding:4px 10px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:var(--accent-deep);font-size:12px;font-weight:600;
}
.data-number{margin-top:16px;font-size:34px;font-weight:700;color:var(--primary-deep);letter-spacing:.02em;line-height:1.1;}
.data-number small{font-size:14px;font-weight:600;color:var(--ink-2);margin-left:6px;letter-spacing:0;}
.data-card p{margin-top:10px;font-size:14px;color:var(--ink-2);}

/* ---------- steps ---------- */
.progress-track{height:4px;border-radius:var(--radius-pill);background:var(--line);overflow:hidden;margin-bottom:40px;}
.progress-fill{height:100%;width:12%;background:var(--accent);border-radius:var(--radius-pill);transition:width .9s ease;}
.progress-track.is-visible .progress-fill{width:45%;}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{position:relative;padding-right:12px;}
.step::after{
  content:"";position:absolute;top:21px;left:52px;right:-14px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(255,107,53,.65));
}
.step:last-child::after{display:none;}
.step-node{
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--primary-tint);color:var(--primary-deep);font-weight:700;font-size:16px;
  border:1px solid var(--line);
}
.step.is-current .step-node{background:var(--accent);color:#fff;border-color:var(--accent);}
.step h3{margin-top:16px;font-size:17px;font-weight:600;color:var(--ink);}
.step p{margin-top:8px;font-size:14px;color:var(--ink-2);}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--primary-deep);border-radius:18px;padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:24px;font-weight:700;line-height:1.4;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:10px;}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;color:inherit;
}
.post-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.post-card:hover .post-title{color:var(--primary-deep);}
.post-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.post-card__body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;}
.chip-xs{padding:3px 10px;border-radius:var(--radius-pill);background:var(--primary-tint);color:var(--primary-deep);font-size:12px;font-weight:600;}
.post-date{font-size:13px;color:var(--ink-3);}
.post-title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;transition:color .18s ease;}
.post-excerpt{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card--lead{
  grid-column:span 3;flex-direction:row;align-items:stretch;
}
.post-card--lead img{width:46%;aspect-ratio:auto;min-height:260px;}
.post-card--lead .post-card__body{padding:30px 32px;justify-content:center;}
.post-card--lead .post-title{font-size:22px;}
.post-card--lead .post-excerpt{-webkit-line-clamp:3;font-size:15px;}
.empty-state{
  grid-column:span 3;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;
}
.empty-state .icon-square{margin:0 auto 16px;width:52px;height:52px;border-radius:16px;}
.empty-state h3{font-size:18px;font-weight:600;color:var(--ink);}
.empty-state p{margin-top:8px;font-size:14px;color:var(--ink-2);}
.empty-state .empty-actions{margin-top:18px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.proof-card{padding:26px 24px;display:flex;flex-direction:column;gap:12px;}
.proof-card h3{font-size:17px;font-weight:600;color:var(--ink);}
.proof-card p{font-size:14px;color:var(--ink-2);}
.quote{
  border-left:3px solid var(--primary);background:var(--surface-2);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:16px 18px;font-size:14px;color:var(--ink-2);
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 22px;box-shadow:var(--shadow-card);transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:#C9DADC;box-shadow:var(--shadow-hover);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-tint);color:var(--primary-deep);font-size:18px;font-weight:700;
  transition:transform .18s ease,background-color .18s ease,color .18s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--accent);color:#fff;transform:rotate(180deg);}
.faq-body{padding:0 0 22px;font-size:15px;color:var(--ink-2);line-height:1.85;max-width:66em;}

/* ---------- form ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:32px;align-items:start;}
.contact-aside h2{font-size:26px;font-weight:700;color:var(--ink);line-height:1.35;}
.contact-aside p{margin-top:14px;font-size:15px;color:var(--ink-2);}
.contact-list{margin-top:22px;display:grid;gap:12px;}
.contact-list li{list-style:none;font-size:14px;color:var(--ink-2);display:flex;gap:10px;align-items:flex-start;}
.contact-list li b{color:var(--ink);font-weight:600;}
.form-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:28px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.form-field label{font-size:14px;font-weight:600;color:var(--ink);}
.form-field input,.form-field textarea,.form-field select{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:12px 14px;font-size:15px;background:#fff;color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-tint);
}
.form-hint{font-size:13px;color:var(--ink-3);}
.form-error{font-size:13px;color:var(--accent-deep);display:flex;gap:6px;align-items:center;}

/* ---------- footer ---------- */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.86);margin-top:0;}
.footer-top{padding:64px 0 44px;display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.6fr) minmax(0,3fr);gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);}
.footer-text{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.76);max-width:32em;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-links a:hover{color:var(--accent);}
.footer-contact{display:grid;gap:10px;font-size:14px;color:rgba(255,255,255,.78);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.7);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .section--tight{padding:56px 0;}
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  h1.hero-title{font-size:34px;}
  .feature-layout{grid-template-columns:1fr;}
  .feature-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .post-card--lead{grid-column:span 2;flex-direction:column;}
  .post-card--lead img{width:100%;aspect-ratio:16/9;min-height:0;}
  .post-card--lead .post-card__body{padding:24px;}
  .proof-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .header-inner{min-height:64px;gap:12px;}
  .header-actions .btn-ghost{display:none;}
  h1.hero-title{font-size:28px;}
  .hero{padding:52px 0 56px;}
  .section-title{font-size:22px;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 26px 0;display:grid;grid-template-columns:44px 1fr;column-gap:16px;}
  .step::after{top:48px;left:21px;right:auto;width:2px;height:calc(100% - 46px);background:linear-gradient(180deg,var(--primary),rgba(255,107,53,.65));}
  .step-node{grid-row:span 2;}
  .step h3{margin-top:6px;}
  .step p{margin-top:2px;grid-column:2;}
  .cta-band{padding:28px 22px;}
  .form-row{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-stats{gap:8px;}
  .stat-pill{padding:8px 12px;}
  .stat-pill b{font-size:16px;}
  .post-grid{grid-template-columns:1fr;}
  .post-card--lead{grid-column:span 1;}
  .feature-side{grid-template-columns:1fr;}
  .data-strip{grid-auto-columns:minmax(220px,1fr);}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .progress-track .progress-fill{width:45%;}
}

/* roulang page: article */
:root{
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAF2F3;
  --ink:#12232B;
  --ink-2:#4A5F68;
  --ink-3:#7E9299;
  --primary:#0E7C8C;
  --primary-deep:#0A5C69;
  --primary-tint:#E3F1F3;
  --accent:#FF6B35;
  --accent-soft:#FFEDE5;
  --line:#DCE6E8;
  --radius-card:14px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(18,35,43,.05),0 8px 24px -12px rgba(14,124,140,.18);
  --shadow-hover:0 14px 32px -14px rgba(14,124,140,.30);
  --space-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary-deep);text-decoration:none;transition:color .18s ease,text-decoration-color .18s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:3px solid rgba(255,107,53,.40);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(18,35,43,.28);}
.header-inner{
  display:flex;align-items:center;gap:18px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:.01em;}
.brand:hover{text-decoration:none;color:var(--primary-deep);}
.brand-mark{
  position:relative;width:30px;height:30px;flex:0 0 auto;
  border-radius:9px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-deep) 100%);
  overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;left:-4px;right:-4px;bottom:6px;height:8px;
  border:2px solid var(--accent);border-radius:50%;
  transform:rotate(-16deg);
}
.brand-mark::before{
  content:"";position:absolute;right:5px;top:5px;width:7px;height:7px;
  background:var(--accent);border-radius:50%;opacity:.95;
}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  background:var(--bg);
  padding:6px;border-radius:999px;
  margin-left:8px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:38px;padding:0 16px;
  font-size:13.5px;font-weight:500;color:var(--ink-2);
  border-radius:999px;border:1px solid transparent;
  white-space:nowrap;scroll-snap-align:start;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--primary-tint);color:var(--primary-deep);text-decoration:none;}
.chip.is-active{background:var(--primary-tint);color:var(--primary-deep);border-color:var(--primary);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .16s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,107,53,.85);}
.btn-primary:hover{background:#F2581F;color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(255,107,53,.95);text-decoration:none;}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--primary-deep);}
.btn-ghost:hover{background:var(--primary-tint);color:var(--primary-deep);text-decoration:none;}
.btn-pill{border-radius:999px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--surface);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);padding:14px 0 20px;}
.mobile-panel.is-open{display:block;}
.mobile-panel .nav-chips{flex-direction:column;align-items:stretch;background:transparent;padding:0;border-radius:0;overflow:visible;}
.mobile-panel .chip{justify-content:flex-start;width:100%;border-radius:var(--radius-sm);border-color:var(--line);}

/* ============ 通用区块 ============ */
.section{padding:var(--space-section) 0;}
.section-tight{padding:56px 0;}
.section-alt{background:var(--surface-2);}
.section-title{display:flex;align-items:center;gap:12px;font-size:28px;font-weight:700;line-height:1.3;}
.section-title::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--accent);flex:0 0 auto;}
.section-lead{margin-top:14px;color:var(--ink-2);font-size:15.5px;max-width:760px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:var(--primary-tint);color:var(--primary-deep);
  font-size:12.5px;font-weight:500;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);
  font-size:12.5px;font-weight:600;
}

/* ============ 文章页头部 ============ */
.article-hero{padding:36px 0 8px;background:var(--bg);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--primary-deep);}
.breadcrumb .sep{color:var(--ink-3);}
.breadcrumb .current{color:var(--ink-3);}
.article-head{margin-top:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:32px 34px;}
.article-head h1{font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.01em;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13.5px;color:var(--ink-3);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.article-cover{margin-top:26px;border-radius:12px;overflow:hidden;border:1px solid var(--line);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ============ 正文排版 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 1fr;gap:48px;align-items:start;}
.article-body{font-size:16px;line-height:1.9;color:var(--ink);}
.article-body > * + *{margin-top:1.2em;}
.article-body p{color:var(--ink);}
.article-body > p:first-of-type{font-size:17px;font-weight:500;color:var(--ink);}
.article-body h2{
  position:relative;font-size:24px;line-height:1.35;font-weight:700;margin-top:1.9em;padding-left:14px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.35em;width:4px;height:18px;border-radius:2px;background:var(--accent);}
.article-body h3{font-size:18px;font-weight:600;line-height:1.5;margin-top:1.6em;padding-left:14px;position:relative;}
.article-body h3::before{content:"";position:absolute;left:0;top:.42em;width:3px;height:14px;border-radius:2px;background:var(--primary);}
.article-body ul,.article-body ol{padding-left:1.4em;}
.article-body li{margin-top:.5em;color:var(--ink-2);}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body blockquote{
  border-left:3px solid var(--primary);
  background:var(--surface-2);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:18px 22px;color:var(--ink-2);
}
.article-body img{border-radius:14px;width:100%;}
.article-body figure{margin:0;}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--ink-3);text-align:center;}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--surface-2);color:var(--primary-deep);font-weight:600;}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.article-body a{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px;}

/* ============ 侧栏 ============ */
.side-panel{display:flex;flex-direction:column;gap:18px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:22px;}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:14px;}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list a{display:block;font-size:14px;color:var(--ink-2);line-height:1.6;}
.side-list a:hover{color:var(--primary-deep);}
.side-stat{display:flex;align-items:baseline;gap:8px;}
.side-stat b{font-size:26px;color:var(--primary-deep);letter-spacing:.02em;}
.side-stat span{font-size:13px;color:var(--ink-3);}
.side-note{margin-top:10px;font-size:13.5px;color:var(--ink-2);line-height:1.7;}

/* ============ 文末组件 ============ */
.article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{display:flex;flex-direction:column;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease;}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);text-decoration:none;}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.related-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-card h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);}
.related-card:hover h3{color:var(--primary-deep);}
.related-card p{font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:13px;color:var(--ink-3);}

/* ============ CTA 窄条 ============ */
.cta-band{background:var(--primary-deep);border-radius:var(--radius-card);padding:34px 38px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;}
.cta-band h2{color:#fff;font-size:24px;font-weight:700;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin-top:8px;max-width:640px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:28px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--primary-tint);color:var(--primary-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;
  transition:transform .18s ease,background-color .18s ease,color .18s ease;
}
.faq-item[open] summary .icon{transform:rotate(45deg);background:var(--accent);color:#fff;}
.faq-item .answer{padding:0 22px 20px;color:var(--ink-2);font-size:15px;line-height:1.85;}
.faq-item summary:hover{color:var(--primary-deep);}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;
}
.empty-state .icon{width:52px;height:52px;border-radius:50%;background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:22px;font-weight:700;}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.82);margin-top:88px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);}
.footer-text{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-links a:hover{color:var(--accent);text-decoration:none;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.78);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-chips{margin-left:0;}
}
@media (max-width:1024px){
  :root{--space-section:64px;}
  .container{padding:0 24px;}
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-head h1{font-size:32px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px;}
  .cta-band{padding:28px;}
}
@media (max-width:768px){
  .header-actions .btn-ghost{display:none;}
  .article-head{padding:24px 22px;}
  .article-head h1{font-size:28px;}
  .section-title{font-size:22px;}
  .cta-band{padding:24px 22px;}
  .cta-band h2{font-size:20px;}
  .article-body table{font-size:13.5px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .brand span.txt{font-size:15.5px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .article-body h2{font-size:21px;}
  .foot-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAF2F3;
  --ink:#12232B;
  --ink-2:#4A5F68;
  --ink-3:#7E9299;
  --primary:#0E7C8C;
  --primary-deep:#0A5C69;
  --primary-tint:#E3F1F3;
  --accent:#FF6B35;
  --accent-deep:#E8551F;
  --accent-soft:#FFEDE5;
  --line:#DCE6E8;
  --radius-card:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(18,35,43,.05), 0 8px 24px -12px rgba(14,124,140,.18);
  --shadow-hover:0 14px 32px -14px rgba(14,124,140,.30);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary-deep);text-decoration:none;transition:color .18s ease}
a:hover{text-decoration:underline;text-underline-offset:3px}
button,input{font:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
:focus-visible{outline:3px solid rgba(255,107,53,.4);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(18,35,43,.35)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:34px;height:34px;background:var(--primary);
  border-radius:9px;clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;display:block}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-chips{
  display:flex;align-items:center;gap:6px;background:var(--bg);
  padding:6px;border-radius:var(--radius-pill);margin-left:auto;
}
.chip{
  display:inline-flex;align-items:center;min-height:34px;
  padding:0 14px;border-radius:var(--radius-pill);
  font-size:13.5px;font-weight:500;color:var(--ink-2);
  border:1px solid transparent;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--primary-tint);color:var(--primary-deep);text-decoration:none}
.chip.is-active{background:var(--primary-tint);color:var(--primary-deep);border-color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--accent);color:#fff;border-radius:var(--radius-pill);box-shadow:0 8px 20px -12px rgba(255,107,53,.7)}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(255,107,53,.8)}
.btn-secondary{background:#fff;color:var(--primary-deep);border-color:var(--line)}
.btn-secondary:hover{background:var(--primary-tint);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--primary-deep);border-color:var(--line)}
.btn-ghost:hover{background:var(--primary-tint)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px}
.link-more{font-size:14px;font-weight:600;color:var(--primary-deep)}
.link-more::after{content:" →"}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 18px}
.mobile-panel.is-open{display:block}
.mobile-chips{display:flex;flex-direction:column;gap:8px}
.mobile-chips .chip{background:var(--bg);justify-content:flex-start;min-height:44px;width:100%}

/* 窄幅首屏 */
.hero-narrow{background:var(--surface-2);padding:52px 0;border-bottom:1px solid var(--line)}
.hero-narrow-inner{display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary-tint);color:var(--primary-deep);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--radius-pill);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.hero-narrow h1{
  margin-top:18px;font-size:36px;line-height:1.22;font-weight:700;letter-spacing:-.01em;color:var(--ink);
}
.hero-narrow p{margin-top:16px;color:var(--ink-2);font-size:15.5px;line-height:1.8;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-narrow-media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);aspect-ratio:16/10;background:#fff;
}
.hero-narrow-media img{width:100%;height:100%;object-fit:cover}

/* 通用板块 */
.section{padding:88px 0}
.section-alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{position:relative;padding-left:16px;font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:20px;border-radius:2px;background:var(--accent)
}
.section-sub{margin-top:10px;padding-left:16px;color:var(--ink-2);font-size:14.5px;max-width:720px}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-media{aspect-ratio:16/9;background:var(--surface-2);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:14px;flex:1}
.card-tag{
  align-self:flex-start;font-size:12.5px;font-weight:600;
  padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--primary-tint);color:var(--primary-deep);
}
.card h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink)}
.card:hover h3{color:var(--primary-deep)}
.card-desc{font-size:14px;line-height:1.75;color:var(--ink-2)}
.point-list{display:flex;flex-direction:column;gap:8px;margin-top:auto}
.point-list li{
  position:relative;padding-left:16px;font-size:13.5px;line-height:1.7;color:var(--ink-2)
}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--primary)
}
.card-foot{
  padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px
}
.meta{font-size:13px;color:var(--ink-3)}

/* 数据条 */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card)
}
.stat-badge{
  display:inline-block;font-size:12.5px;font-weight:600;
  background:var(--accent-soft);color:var(--accent-deep);
  padding:3px 10px;border-radius:var(--radius-pill)
}
.stat-num{margin-top:14px;font-size:34px;line-height:1.1;font-weight:700;letter-spacing:.02em;color:var(--ink)}
.stat-num span{font-size:15px;font-weight:600;color:var(--ink-2);margin-left:4px}
.stat-desc{margin-top:10px;font-size:13.5px;color:var(--ink-2);line-height:1.7}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 22px;box-shadow:var(--shadow-card);transition:box-shadow .18s ease
}
.faq-item[open]{box-shadow:var(--shadow-hover)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--ink)
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:600;color:var(--primary);line-height:1;transition:transform .18s ease
}
.faq-item[open] summary::after{content:"−";color:var(--accent)}
.faq-item summary:hover{color:var(--primary-deep)}
.faq-body{padding:0 0 22px;font-size:14.5px;line-height:1.8;color:var(--ink-2)}

/* CTA 区 */
.cta-band{
  background:var(--primary-deep);border-radius:var(--radius-card);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;box-shadow:var(--shadow-card)
}
.cta-band h2{font-size:24px;line-height:1.35;font-weight:700;color:#fff}
.cta-band p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.82);max-width:640px}
.cta-band .btn-primary{flex-shrink:0}

/* 下一步引导 */
.next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.next-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:12px;transition:transform .18s ease,box-shadow .18s ease
}
.next-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.next-card h3{font-size:19px;font-weight:600;color:var(--ink)}
.next-card p{font-size:14.5px;color:var(--ink-2)}
.next-card .link-more{margin-top:auto}

/* 页脚 */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.86);padding:60px 0 0}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.footer-brand .brand-mark{background:var(--accent)}
.footer-text{margin-top:14px;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.78)}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.82);font-size:14px}
.footer-links a:hover{color:var(--accent);text-decoration:none}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(255,255,255,.82)}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.7)
}

/* 响应式 */
@media (max-width:1024px){
  .container{padding:0 24px}
  .nav-chips{display:none}
  .header-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .section{padding:64px 0}
  .hero-narrow{padding:44px 0}
  .hero-narrow-inner{grid-template-columns:1fr;gap:28px}
  .hero-narrow h1{font-size:30px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
  .next-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 28px}
  .section-title{font-size:24px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .header-inner{height:62px;gap:12px}
  .brand-text{font-size:15.5px}
  .section{padding:48px 0}
  .hero-narrow h1{font-size:26px}
  .hero-narrow p{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .card-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:26px}
  .section-title{font-size:22px}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-band h2{font-size:21px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .card:hover,.next-card:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAF2F3;
  --ink:#12232B;
  --ink-2:#4A5F68;
  --ink-3:#7E9299;
  --primary:#0E7C8C;
  --primary-deep:#0A5C69;
  --primary-tint:#E3F1F3;
  --accent:#FF6B35;
  --accent-soft:#FFEDE5;
  --line:#DCE6E8;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(18,35,43,.05),0 8px 24px -12px rgba(14,124,140,.18);
  --shadow-hover:0 14px 32px -14px rgba(14,124,140,.30);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary-deep);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(255,107,53,.45);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;border-radius:999px;box-shadow:0 6px 16px -8px rgba(255,107,53,.7);}
.btn-primary:hover{background:#F05520;color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(255,107,53,.75);}
.btn-ghost{background:var(--surface);color:var(--primary-deep);border-color:var(--line);}
.btn-ghost:hover{background:var(--primary-tint);color:var(--primary-deep);border-color:var(--primary);}
.btn-dark{background:var(--primary-deep);color:#fff;}
.btn-dark:hover{background:var(--primary);color:#fff;transform:translateY(-1px);}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary-deep);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.text-link:hover{color:var(--primary-deep);border-bottom-color:var(--primary);text-underline-offset:3px;text-decoration:underline;}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(8px);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(18,35,43,.45);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:none;
  background:var(--primary);
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;left:5px;right:0;bottom:9px;height:3px;
  background:var(--accent);border-radius:2px;transform:rotate(-14deg);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}

.nav-wrap{background:var(--bg);border-radius:999px;padding:6px;flex:1 1 auto;max-width:760px;}
.nav-chips{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;
  padding:9px 16px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:500;color:var(--ink-2);scroll-snap-align:start;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--primary-tint);color:var(--primary-deep);}
.chip.is-active{background:var(--primary-tint);color:var(--primary-deep);border-color:var(--primary);font-weight:600;}

.header-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);position:relative;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:transform .18s ease,opacity .18s ease;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);}
.mobile-panel.is-open{display:block;}
.mobile-panel .inner{padding:14px 32px 20px;display:flex;flex-direction:column;gap:6px;}
.mobile-panel .chip{justify-content:flex-start;padding:12px 16px;border-radius:var(--radius-sm);background:var(--bg);}
.mobile-panel .chip.is-active{background:var(--primary-tint);border-color:var(--primary);}

/* ---------- 窄 Hero ---------- */
.subhero{background:var(--surface-2);border-bottom:1px solid var(--line);padding:52px 0 48px;}
.subhero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--ink-3);}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px;}
.tag{display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;background:var(--primary-tint);color:var(--primary-deep);font-size:13px;font-weight:500;}
.tag-accent{background:var(--accent-soft);color:#C6471A;font-weight:600;}
h1{font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.01em;margin-bottom:16px;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:620px;margin-bottom:22px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.hero-note{font-size:13px;color:var(--ink-3);}
.hero-figure{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--surface);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(227,241,243,0) 45%,rgba(10,92,105,.16) 100%);}

/* ---------- 数据条 ---------- */
.kpi-strip{background:var(--surface);border-bottom:1px solid var(--line);}
.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.kpi{padding:26px 24px;border-left:1px solid var(--line);}
.kpi:first-child{border-left:none;padding-left:0;}
.kpi-num{font-size:30px;font-weight:700;letter-spacing:.02em;color:var(--primary-deep);line-height:1.2;}
.kpi-num span{font-size:15px;font-weight:600;color:var(--ink-2);margin-left:4px;}
.kpi-label{font-size:14px;color:var(--ink-2);margin-top:6px;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.section-title{font-size:28px;line-height:1.3;font-weight:700;position:relative;padding-left:14px;letter-spacing:-.01em;}
.section-title::before{content:"";position:absolute;left:0;top:6px;width:3px;height:20px;border-radius:2px;background:var(--accent);}
.section-desc{font-size:15px;color:var(--ink-2);max-width:680px;margin-top:12px;line-height:1.8;}
.lead-block{max-width:820px;font-size:16px;color:var(--ink-2);line-height:1.9;}

/* ---------- 交错图文 ---------- */
.zz-list{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.zz-item{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center;padding:56px 0;border-bottom:1px solid var(--line);}
.zz-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--surface-2);box-shadow:var(--shadow);}
.zz-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.zz-media .media-label{
  position:absolute;left:14px;top:14px;z-index:2;
  padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.92);
  color:var(--primary-deep);font-size:12px;font-weight:600;
}
.zz-item.rev .zz-media{order:2;}
.zz-item.rev .zz-body{order:1;}
.zz-body h3{font-size:22px;line-height:1.45;font-weight:700;margin-bottom:12px;letter-spacing:-.005em;}
.zz-body p{font-size:15px;color:var(--ink-2);line-height:1.85;margin-bottom:12px;}
.zz-points{display:flex;flex-direction:column;gap:8px;margin:16px 0 18px;}
.zz-points li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.zz-points li::before{content:"";position:absolute;left:4px;top:9px;width:6px;height:6px;border-radius:50%;background:var(--primary);}
.zz-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--ink-3);}

/* ---------- 要点卡 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.check-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease;}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.check-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.check-card p{font-size:14px;color:var(--ink-2);line-height:1.8;}
.check-icon{width:38px;height:38px;border-radius:11px;background:var(--primary-tint);color:var(--primary-deep);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:14px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 22px;position:relative;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:600;color:var(--primary-deep);transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-body{padding:0 22px 22px;font-size:15px;color:var(--ink-2);line-height:1.9;}
.faq-item summary:hover{color:var(--primary-deep);}

/* ---------- CTA ---------- */
.cta-bar{background:var(--primary-deep);color:#fff;padding:56px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-bar h2{font-size:26px;font-weight:700;line-height:1.4;color:#fff;padding-left:0;}
.cta-bar h2::before{display:none;}
.cta-bar p{font-size:15px;color:rgba(255,255,255,.82);margin-top:10px;max-width:640px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-on-dark{background:var(--accent);color:#fff;border-radius:999px;}
.btn-on-dark:hover{background:#F05520;color:#fff;transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ---------- 咨询卡 ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:40px;align-items:start;}
.info-list{display:flex;flex-direction:column;gap:16px;margin-top:22px;}
.info-item{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.info-item b{color:var(--ink);font-weight:600;}
.info-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;flex:none;}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;padding:12px 14px;font-size:15px;font-family:inherit;color:var(--ink);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:110px;resize:vertical;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-tint);}
.form-hint{font-size:13px;color:var(--ink-3);margin-top:12px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.82);padding:64px 0 26px;margin-top:0;}
.footer-top{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.4fr) minmax(0,3fr);gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand .brand-mark::after{background:#fff;}
.footer-text{font-size:14px;line-height:1.85;color:rgba(255,255,255,.78);max-width:340px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.8);}
.footer-links a:hover{color:var(--accent);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.8);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.68);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 28px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-wrap,.header-actions .btn-ghost{display:none;}
  .nav-toggle{display:block;}
  .header-inner{gap:12px;}
  h1{font-size:32px;}
  .subhero{padding:44px 0 42px;}
  .subhero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-figure{order:-1;}
  .hero-figure img{aspect-ratio:16/9;}
  .kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .kpi{border-left:1px solid var(--line);padding:22px 20px;}
  .kpi:nth-child(odd){border-left:none;padding-left:0;}
  .kpi:nth-child(3),.kpi:nth-child(4){border-top:1px solid var(--line);}
  .zz-item{gap:32px;padding:44px 0;}
  .zz-body h3{font-size:20px;}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact-grid{grid-template-columns:1fr;gap:28px;}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .section{padding:64px 0;}
  .mobile-panel .inner{padding:14px 24px 20px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  h1{font-size:28px;}
  .section{padding:48px 0;}
  .section-tight{padding:44px 0;}
  .section-title{font-size:22px;}
  .zz-item{grid-template-columns:1fr;gap:20px;padding:36px 0;}
  .zz-item.rev .zz-media,.zz-item.rev .zz-body{order:initial;}
  .zz-media img{aspect-ratio:16/9;}
  .check-grid{grid-template-columns:1fr;}
  .cta-bar h2{font-size:22px;}
  .kpi-num{font-size:26px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .mobile-panel .inner{padding:12px 16px 18px;}
  .kpi-grid{grid-template-columns:1fr;}
  .kpi{border-left:none;padding:18px 0;border-top:1px solid var(--line);}
  .kpi:first-child{border-top:none;}
  .hero-actions .btn{width:100%;}
  .form-card{padding:22px;}
  .footer-top{grid-template-columns:1fr;}
  .brand-text{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAF2F3;
  --ink:#12232B;
  --ink-2:#4A5F68;
  --ink-3:#7E9299;
  --primary:#0E7C8C;
  --primary-deep:#0A5C69;
  --primary-tint:#E3F1F3;
  --accent:#FF6B35;
  --accent-soft:#FFEDE5;
  --line:#DCE6E8;
  --radius-card:14px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(18,35,43,.05), 0 8px 24px -12px rgba(14,124,140,.18);
  --shadow-hover:0 14px 32px -14px rgba(14,124,140,.30);
  --edge:32px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary-deep);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:3px solid rgba(255,107,53,.4);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--edge);}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.bg-soft{background:var(--surface-2);}
.bg-white{background:var(--surface);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(18,35,43,.28);}
.header-inner{
  min-height:68px;display:flex;align-items:center;gap:20px;
  padding-top:10px;padding-bottom:10px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:-.01em;}
.brand:hover{text-decoration:none;color:var(--primary-deep);}
.brand-mark{
  width:30px;height:30px;border-radius:9px 9px 9px 2px;
  background:var(--primary);position:relative;flex:none;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;right:6px;bottom:9px;height:2.5px;border-radius:2px;
  background:var(--accent);
  transform:rotate(-14deg);transform-origin:left center;
}
.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1;
  background:var(--bg);border-radius:999px;padding:6px;
  overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:none;scroll-snap-align:start;
  padding:9px 15px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--ink-2);
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--primary-tint);color:var(--primary-deep);text-decoration:none;}
.chip.is-active{
  background:var(--primary-tint);color:var(--primary-deep);
  border-color:var(--primary);font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:10px;
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--accent);color:#fff;border-radius:999px;box-shadow:0 8px 20px -12px rgba(255,107,53,.85);}
.btn-primary:hover{background:#E85A24;transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(255,107,53,.9);}
.btn-outline{background:var(--surface);color:var(--primary-deep);border-color:var(--line);}
.btn-outline:hover{background:var(--primary-tint);border-color:var(--primary);}
.btn-ghost{background:transparent;color:var(--primary-deep);padding:0 6px;}
.btn-link{color:var(--primary-deep);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;padding:6px 2px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);padding:14px 0 18px;}
.mobile-panel.is-open{display:block;}
.mobile-panel .chip{display:block;width:100%;padding:12px 16px;border-radius:10px;margin-bottom:6px;background:var(--bg);}
.mobile-panel .chip.is-active{background:var(--primary-tint);}

/* ============ 内页窄 Hero ============ */
.page-hero{background:var(--surface-2);border-bottom:1px solid var(--line);padding:52px 0;}
.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);color:var(--primary-deep);
  border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;font-weight:600;margin-bottom:18px;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}
.page-hero h1{
  font-size:36px;line-height:1.22;font-weight:700;letter-spacing:-.01em;color:var(--ink);
}
.page-hero p.lead{margin-top:16px;font-size:15.5px;line-height:1.8;color:var(--ink-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow-card);aspect-ratio:16/10;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(227,241,243,.62),rgba(227,241,243,0) 62%);
}
.hero-badge{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:10px 14px;font-size:13px;color:var(--ink-2);
  box-shadow:var(--shadow-card);
}
.hero-badge b{color:var(--primary-deep);font-size:15px;}

/* ============ 通用标题 ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap;}
.sec-title{display:flex;align-items:center;gap:12px;font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.sec-title::before{content:"";width:3px;height:20px;border-radius:2px;background:var(--accent);flex:none;}
.sec-desc{margin-top:10px;font-size:14px;color:var(--ink-2);max-width:720px;}
.sec-sub{font-size:14px;color:var(--ink-2);}

/* ============ 数据条 ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.kpi{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 20px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;
}
.kpi:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.kpi-tag{
  display:inline-block;background:var(--accent-soft);color:var(--accent);
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 10px;margin-bottom:14px;
}
.kpi-num{font-size:32px;font-weight:700;letter-spacing:.02em;line-height:1.1;color:var(--ink);}
.kpi-num span{font-size:14px;font-weight:600;color:var(--ink-3);margin-left:4px;letter-spacing:0;}
.kpi-text{margin-top:8px;font-size:13.5px;color:var(--ink-2);}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:6px;}
.timeline::before{
  content:"";position:absolute;left:21px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary) 0%, #9FC6CB 55%, var(--line) 100%);
}
.tl-item{display:grid;grid-template-columns:44px 1fr;gap:24px;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-axis{display:flex;justify-content:center;padding-top:8px;}
.tl-dot{
  width:44px;height:44px;border-radius:999px;display:grid;place-items:center;
  background:var(--primary-tint);color:var(--primary-deep);
  border:1px solid var(--line);font-weight:700;font-size:14px;letter-spacing:.02em;
  position:relative;z-index:1;
}
.tl-item.is-current .tl-dot{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 8px 18px -10px rgba(255,107,53,.9);}
.tl-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;
}
.tl-body:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.tl-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.tl-time{
  font-size:13px;font-weight:700;color:var(--primary-deep);
  background:var(--primary-tint);border-radius:999px;padding:5px 12px;letter-spacing:.02em;
}
.tl-tag{font-size:12.5px;color:var(--ink-3);}
.tl-body h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink);}
.tl-body p{margin-top:9px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.tl-points{margin-top:14px;display:grid;gap:8px;}
.tl-points li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.tl-points li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);opacity:.75;
}

/* ============ 卡片通用 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#C9D9DC;}
.card:hover h3{color:var(--primary-deep);}
.card-media{aspect-ratio:16/9;background:var(--surface-2);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17.5px;line-height:1.5;font-weight:600;color:var(--ink);transition:color .18s ease;}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-2);}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);}
.tag{
  display:inline-block;background:var(--primary-tint);color:var(--primary-deep);
  border-radius:999px;padding:4px 11px;font-size:12.5px;font-weight:500;
}
.card-meta .time{font-size:13px;color:var(--ink-3);}

/* ============ 横向滚动卡片带 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 18px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail .rail-card{
  flex:0 0 calc((100% - 60px)/3.5);scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.rail-card .kpi-tag{background:var(--accent-soft);color:var(--accent);}
.rail-card h3{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--ink);}
.rail-card p{margin-top:8px;font-size:13.5px;color:var(--ink-2);line-height:1.7;}

/* ============ 进度条 ============ */
.progress-track{height:4px;border-radius:999px;background:var(--line);overflow:hidden;margin-bottom:26px;}
.progress-fill{display:block;height:100%;width:8%;border-radius:999px;background:var(--accent);transition:width 1s ease;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:#C9D9DC;box-shadow:var(--shadow-card);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:600;color:var(--primary-deep);line-height:1;
  transition:transform .2s ease;flex:none;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-2);}

/* ============ CTA 窄条 ============ */
.cta-bar{
  background:var(--primary-deep);border-radius:var(--radius-card);
  padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
}
.cta-bar h2{font-size:22px;line-height:1.4;font-weight:700;color:#fff;}
.cta-bar p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.82);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-on-dark{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.42);border-radius:999px;
}
.btn-on-dark:hover{background:rgba(255,255,255,.12);border-color:#fff;}

/* ============ 下一页引导 ============ */
.next-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.next-card{
  border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:10px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.next-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.next-card h3{font-size:17px;font-weight:600;color:var(--ink);}
.next-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7;}

/* ============ 表单 ============ */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);max-width:720px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:13.5px;font-weight:600;color:var(--ink);}
.field input,.field textarea,.field select{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:12px 14px;font-size:14.5px;background:var(--surface);color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-tint);
}
.field .hint{font-size:12.5px;color:var(--ink-3);}
.field .error{font-size:12.5px;color:var(--accent);font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.86);margin-top:0;padding:64px 0 26px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-brand .brand-mark{background:#fff;}
.footer-brand .brand-mark::after{background:var(--accent);}
.footer-text{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.78);max-width:400px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:rgba(255,255,255,.8);font-size:13.5px;}
.footer-links a:hover{color:var(--accent);text-decoration:none;}
.footer-contact{display:grid;gap:10px;font-size:13.5px;color:rgba(255,255,255,.78);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.66);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--edge:24px;}
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-outline{display:none;}
  .page-hero-grid{grid-template-columns:1fr;gap:28px;}
  .page-hero h1{font-size:30px;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .next-grid{grid-template-columns:repeat(2,1fr);}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .rail .rail-card{flex:0 0 calc((100% - 40px)/2.2);}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .page-hero{padding:38px 0;}
  .page-hero h1{font-size:27px;}
  .sec-title{font-size:22px;}
  .tl-item{gap:16px;}
  .tl-body{padding:20px;}
  .cta-bar{padding:26px 22px;}
  .cta-bar h2{font-size:19px;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .form-row{grid-template-columns:1fr;}
  .rail .rail-card{flex:0 0 84%;}
}
@media (max-width:520px){
  :root{--edge:16px;}
  .brand{font-size:16px;}
  .header-actions .btn-primary{padding:0 14px;font-size:13px;}
  .kpi-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .next-grid{grid-template-columns:1fr;}
  .page-hero h1{font-size:24px;}
  .kpi-num{font-size:27px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category4 */
:root{
  --bg:#F4F7F8;
  --surface:#FFFFFF;
  --surface-2:#EAF2F3;
  --ink:#12232B;
  --ink-2:#4A5F68;
  --ink-3:#7E9299;
  --primary:#0E7C8C;
  --primary-deep:#0A5C69;
  --primary-tint:#E3F1F3;
  --accent:#FF6B35;
  --accent-soft:#FFEDE5;
  --line:#DCE6E8;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(18,35,43,.05),0 8px 24px -12px rgba(14,124,140,.18);
  --shadow-hover:0 14px 32px -14px rgba(14,124,140,.30);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:0;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary-deep);text-decoration:none;transition:color .18s ease,text-decoration-color .18s ease;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
h1{font-size:40px;line-height:1.2;letter-spacing:-.01em;}
h2{font-size:28px;line-height:1.3;font-weight:700;}
h3{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(255,107,53,.4);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{display:flex;align-items:center;gap:12px;}
.section-title::before{content:"";display:block;width:3px;height:20px;border-radius:2px;background:var(--accent);}
.section-desc{margin-top:12px;color:var(--ink-2);font-size:15px;max-width:720px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--primary-tint);color:var(--primary-deep);font-size:13px;font-weight:500;}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .18s ease;}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(18,35,43,.35);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:68px;padding-top:8px;padding-bottom:8px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:16px;letter-spacing:.01em;}
.brand:hover{text-decoration:none;color:var(--primary-deep);}
.brand-mark{position:relative;display:inline-block;width:30px;height:30px;border-radius:9px;background:var(--primary);overflow:hidden;flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;left:-6px;right:-6px;bottom:7px;height:3px;border-radius:3px;background:var(--accent);transform:rotate(-18deg);}
.brand-mark::before{content:"";position:absolute;left:6px;top:8px;width:12px;height:12px;border-radius:50%;border:2px solid rgba(255,255,255,.75);}
.nav-wrap{flex:1 1 auto;display:flex;justify-content:center;min-width:0;}
.nav-shell{display:flex;align-items:center;gap:6px;padding:6px;border-radius:999px;background:var(--bg);max-width:100%;overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;}
.nav-shell::-webkit-scrollbar{display:none;}
.chip{display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 16px;border-radius:999px;font-size:13px;font-weight:500;color:var(--ink-2);white-space:nowrap;scroll-snap-align:start;border:1px solid transparent;transition:background .16s ease,color .16s ease,border-color .16s ease;}
.chip:hover{background:var(--primary-tint);color:var(--primary-deep);text-decoration:none;}
.chip.is-active{background:var(--primary-tint);color:var(--primary-deep);border-color:var(--primary);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:transform .16s ease,background .16s ease,color .16s ease,box-shadow .16s ease,border-color .16s ease;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 18px -12px rgba(255,107,53,.75);}
.btn-primary:hover{background:#E85A26;color:#fff;box-shadow:0 12px 24px -12px rgba(255,107,53,.85);}
.btn-ghost{background:var(--surface);color:var(--primary-deep);border-color:var(--line);}
.btn-ghost:hover{background:var(--primary-tint);color:var(--primary-deep);}
.btn-dark{background:var(--primary-deep);color:#fff;}
.btn-dark:hover{background:#084F5B;color:#fff;}
.btn-link{color:var(--primary-deep);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.btn-link:hover{text-decoration:underline;text-underline-offset:3px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);}
.mobile-panel .nav-shell{flex-direction:column;align-items:stretch;border-radius:14px;overflow:visible;}
.mobile-panel .chip{justify-content:flex-start;height:44px;}

/* hero KV */
.kv{position:relative;background:var(--surface-2);overflow:hidden;}
.kv-media{position:relative;height:420px;background-image:linear-gradient(90deg,rgba(10,92,105,.86) 0%,rgba(10,92,105,.62) 42%,rgba(14,124,140,.28) 100%),url("/assets/images/backpic/back-3.png");background-size:cover;background-position:center;display:flex;align-items:center;}
.kv-inner{padding:56px 0;color:#fff;max-width:760px;}
.kv .eyebrow{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);}
.kv h1{color:#fff;margin:18px 0 16px;}
.kv p.lead{color:rgba(255,255,255,.9);font-size:16px;max-width:640px;}
.kv-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.kv .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5);color:#fff;}
.kv .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;}
.kv-strip{background:var(--surface);border-bottom:1px solid var(--line);}
.kv-stats{display:flex;flex-wrap:wrap;gap:16px;padding:22px 0;}
.stat-pill{display:inline-flex;align-items:baseline;gap:8px;padding:10px 18px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);font-size:13px;color:var(--ink-2);}
.stat-pill b{font-size:18px;font-weight:700;color:var(--primary-deep);letter-spacing:.02em;}

/* intro text */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:start;}
.intro-copy p{color:var(--ink-2);font-size:16px;}
.intro-copy p + p{margin-top:16px;}
.intro-side{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);}
.intro-side h3{margin-bottom:12px;}
.intro-side ul li{display:flex;gap:10px;padding:9px 0;border-top:1px dashed var(--line);font-size:14px;color:var(--ink-2);}
.intro-side ul li:first-child{border-top:0;}
.intro-side ul li span.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:0 0 auto;margin-top:9px;}

/* 要点卡网格 */
.pi-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.pi-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.pi-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C9DCDE;}
.pi-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.pi-card .pi-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.pi-card h3{color:var(--ink);}
.pi-card p{color:var(--ink-2);font-size:14px;}
.pi-points{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.pi-points li{display:flex;gap:8px;font-size:13px;color:var(--ink-2);}
.pi-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);flex:0 0 auto;margin-top:8px;}
.pi-card .card-link{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);}

/* 数据卡 */
.plan-band{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.plan-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory;scrollbar-width:none;}
.plan-scroll::-webkit-scrollbar{display:none;}
.plan-card{flex:0 0 300px;scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);}
.plan-badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;}
.plan-num{margin:16px 0 4px;font-size:38px;font-weight:700;line-height:1;color:var(--primary-deep);letter-spacing:.02em;}
.plan-num small{font-size:14px;font-weight:600;color:var(--ink-2);margin-left:6px;}
.plan-card p{color:var(--ink-2);font-size:14px;}

/* 图文详解 */
.detail-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:44px 0;border-bottom:1px solid var(--line);}
.detail-row:first-of-type{border-top:1px solid var(--line);}
.detail-row.reverse .detail-media{order:2;}
.detail-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;border:1px solid var(--line);}
.detail-body h3{margin-bottom:10px;font-size:20px;}
.detail-body p{color:var(--ink-2);font-size:15px;margin-bottom:14px;}
.detail-list{display:flex;flex-direction:column;gap:10px;margin:16px 0 20px;}
.detail-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);}
.detail-list li em{font-style:normal;font-weight:600;color:var(--primary-deep);flex:0 0 auto;}

/* FAQ */
.faq-wrap{max-width:900px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden;}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:22px;line-height:1;color:var(--primary-deep);transition:transform .18s ease;flex:0 0 auto;}
.faq-item[open] summary::after{content:"−";transform:rotate(0deg);}
.faq-item[open] summary{color:var(--primary-deep);}
.faq-answer{padding:0 24px 22px;color:var(--ink-2);font-size:15px;}
.faq-answer p + p{margin-top:10px;}

/* CTA 条 */
.cta-band{background:var(--primary-deep);border-radius:18px;padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:24px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:8px;max-width:600px;}

/* 表单 */
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;font-weight:600;color:var(--ink-2);}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);font-size:14px;font-family:inherit;transition:border-color .16s ease,box-shadow .16s ease;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-tint);}
.form-note{font-size:13px;color:var(--ink-3);}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:22px;}

/* 下一步 */
.next-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.next-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease;}
.next-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);text-decoration:none;}
.next-card h3{color:var(--ink);margin-bottom:8px;}
.next-card:hover h3{color:var(--primary-deep);}
.next-card p{color:var(--ink-2);font-size:14px;}
.next-card span.more{display:inline-block;margin-top:14px;font-size:13px;font-weight:600;color:var(--accent);}

/* footer */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,.86);margin-top:0;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px;}
.footer-brand .brand-mark{background:#0E7C8C;}
.footer-text{font-size:13px;color:rgba(255,255,255,.72);line-height:1.8;}
.footer-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.78);font-size:13px;}
.footer-links a:hover{color:var(--accent);text-decoration:none;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13px;color:rgba(255,255,255,.78);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.62);}

/* responsive */
@media (max-width:1024px){
  .kv-media{height:380px;}
  .kv-inner{max-width:100%;}
  .intro-grid{grid-template-columns:1fr;}
  .pi-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .next-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-wrap{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-ghost{display:none;}
  .mobile-panel.is-open{display:block;}
  .mobile-panel .container{padding-top:16px;padding-bottom:16px;}
}
@media (max-width:768px){
  h1{font-size:30px;}
  h2{font-size:23px;}
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .detail-row{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .detail-row.reverse .detail-media{order:0;}
  .form-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 26px;border-radius:16px;}
  .cta-band h2{font-size:21px;}
}
@media (max-width:600px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  h1{font-size:26px;}
  h2{font-size:21px;}
  .kv-media{height:auto;padding:28px 0;}
  .kv-inner{padding:24px 0;}
  .pi-grid{grid-template-columns:1fr;}
  .next-grid{grid-template-columns:1fr;}
  .plan-card{flex:0 0 82%;}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .kv-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}