/* roulang page: index */
:root{
  --primary:#1F5BFF;
  --primary-dark:#1749D6;
  --primary-light:#E8F0FF;
  --secondary:#00B8A9;
  --secondary-light:#E4F8F6;
  --accent:#FF7A33;
  --accent-dark:#E8661F;
  --ink:#101828;
  --ink-2:#475467;
  --ink-3:#98A2B3;
  --border:#E4EAF5;
  --divider:#EEF2F8;
  --bg:#FFFFFF;
  --bg-alt:#F6F9FF;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:8px;
  --shadow-1:0 1px 2px rgba(16,24,40,.04), 0 10px 28px -14px rgba(31,91,255,.16);
  --shadow-2:0 2px 6px rgba(16,24,40,.06), 0 18px 40px -16px rgba(31,91,255,.24);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html body{
  margin:0;
  padding:0 0 84px;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px;max-width:1240px}
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--border);
  box-shadow:0 6px 20px -14px rgba(16,24,40,.28);
  background:#fff;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:60px;
}
@media (min-width:1024px){
  .header-inner{height:72px;gap:32px}
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:24px;height:24px;flex:none;border-radius:7px;
  background:linear-gradient(140deg,var(--primary) 0%,#3D74FF 55%,var(--secondary) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px 6px;border-radius:2px;
  background:#fff;opacity:.92;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{
  font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;
}
.brand-text span{
  font-size:11px;color:var(--ink-3);letter-spacing:.4px;white-space:nowrap;
}
@media (min-width:1024px){
  .brand-text strong{font-size:16px}
  .brand-text span{font-size:11.5px}
}

.nav-desktop{display:none}
@media (min-width:1024px){
  .nav-desktop{display:flex;align-items:center;gap:6px;margin-left:auto}
}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  transition:color var(--ease),background var(--ease);
  position:relative;
}
.nav-link:hover{color:var(--primary);background:var(--bg-alt)}
.nav-link[aria-current="page"]{color:var(--primary)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-link.has-caret::before{
  content:"";width:6px;height:6px;margin-left:8px;
  border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg) translateY(-2px);opacity:.7;
}
.mega-panel{
  position:absolute;top:calc(100% + 10px);left:-40px;
  width:660px;padding:22px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
  display:grid;grid-template-columns:1.15fr 1fr;gap:20px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity 120ms ease-out,transform 120ms ease-out,visibility 120ms;
}
.nav-item:hover .mega-panel,
.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{
  font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.6px;
  margin-bottom:10px;
}
.mega-list li + li{margin-top:2px}
.mega-list a{
  display:flex;align-items:center;gap:8px;
  padding:9px 10px;border-radius:9px;font-size:14px;font-weight:600;color:var(--ink-2);
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.mega-list a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);flex:none;
}
.mega-list a:hover{background:var(--bg-alt);color:var(--primary);transform:translateX(2px)}
.mega-card{
  border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;
  background:var(--bg-alt);display:flex;flex-direction:column;
}
.mega-card img{width:100%;height:104px;object-fit:cover}
.mega-card-body{padding:12px 14px 14px}
.mega-card-body p{font-size:13px;color:var(--ink-2);line-height:1.6;margin-bottom:10px}

.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:11px;border:1px solid var(--border);
  background:#fff;color:var(--ink);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
@media (min-width:1024px){ .nav-toggle{display:none} }
.nav-toggle-icon{position:relative;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle-icon::before,.nav-toggle-icon::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle-icon::before{top:-6px}
.nav-toggle-icon::after{top:6px}

.mobile-drawer{
  position:fixed;inset:60px 0 0 0;z-index:55;
  background:#fff;border-top:1px solid var(--border);
  padding:14px 20px 32px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer .drawer-label{
  font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.6px;margin:14px 0 8px;
}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.mobile-drawer a:hover,.mobile-drawer a:active{background:var(--bg-alt);color:var(--primary)}
.mobile-drawer a.is-active{color:var(--primary);background:var(--primary-light)}
.mobile-drawer a.sub{padding-left:28px;font-weight:500;color:var(--ink-2)}
@media (min-width:1024px){ .mobile-drawer{display:none} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:10px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -12px rgba(31,91,255,.9)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,122,51,.95)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{min-height:36px;padding:0 16px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
  transition:gap var(--ease),color var(--ease);
}
.text-link:hover{gap:10px;color:var(--primary-dark)}

/* ---------- 通用小件 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.3px;
  background:var(--primary-light);color:var(--primary-dark);
}
.badge-green{background:var(--secondary-light);color:#048E83}
.badge-muted{background:var(--divider);color:var(--ink-2)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.6px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}

.section{padding:64px 0}
@media (min-width:1024px){ .section{padding:104px 0} }
.section-alt{background:var(--bg-alt)}
.section-head{margin-bottom:32px}
@media (min-width:1024px){ .section-head{margin-bottom:48px} }
.section-head h2{
  font-size:clamp(22px,3.2vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.2px;
  display:flex;align-items:center;gap:12px;
}
.section-head h2::before{
  content:"";width:4px;height:22px;border-radius:2px;background:var(--primary);flex:none;
}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px;max-width:680px}
.section-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(900px 480px at 82% -6%, #EAF1FF 0%, rgba(234,241,255,0) 68%),
    #fff;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(31,91,255,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31,91,255,.045) 1px, transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(to bottom,#000 0%,rgba(0,0,0,.35) 62%,transparent 100%);
  mask-image:linear-gradient(to bottom,#000 0%,rgba(0,0,0,.35) 62%,transparent 100%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;gap:40px;
  padding:48px 0 56px;
}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:76px 0 88px}
}
.hero h1{
  font-size:clamp(26px,5vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.6px;
  margin:16px 0 0;
}
.hero-sub{
  margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:600px;
}
@media (min-width:1024px){ .hero-sub{font-size:17.5px} }
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.trust-row{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;
  padding-top:22px;border-top:1px solid var(--divider);
}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);font-weight:500}
.trust-row svg{width:18px;height:18px;flex:none;color:var(--secondary)}

.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:20px;border:1px solid var(--border);
  box-shadow:var(--shadow-1);
}
.float-card{
  position:absolute;left:18px;bottom:-22px;
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:12px 18px 12px 14px;box-shadow:var(--shadow-2);
}
.float-card .num{
  font-size:28px;font-weight:800;color:var(--primary);line-height:1;
}
.float-card .txt{font-size:12.5px;color:var(--ink-2);line-height:1.5;max-width:130px}

/* ---------- 卖点网格 ---------- */
.adv-grid{display:grid;gap:20px}
@media (min-width:1024px){
  .adv-grid{grid-template-columns:repeat(12,1fr);grid-auto-rows:auto;gap:24px}
  .adv-lead{grid-column:span 6;grid-row:span 2}
  .adv-small{grid-column:span 6}
  .adv-small:first-of-type{margin-top:0}
  .adv-grid .adv-push{margin-top:24px}
}
.adv-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;gap:12px;height:100%;
}
.adv-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D5E1FA}
.adv-num{
  font-size:28px;font-weight:800;color:transparent;
  -webkit-text-stroke:1.4px var(--primary);line-height:1;
}
.adv-icon{
  width:44px;height:44px;border-radius:12px;background:var(--secondary-light);
  display:flex;align-items:center;justify-content:center;color:#048E83;flex:none;
}
.adv-icon svg{width:22px;height:22px}
.adv-card h3{font-size:20px;line-height:1.4;font-weight:600}
.adv-card p{font-size:15px;color:var(--ink-2);line-height:1.8}
.adv-lead{padding:32px}
.adv-lead h3{font-size:24px;font-weight:700}
.adv-lead p{font-size:15.5px}

/* ---------- 场景演示 ---------- */
.scene{
  display:grid;gap:24px;align-items:center;
  padding:24px 0;
}
.scene + .scene{border-top:1px solid var(--divider)}
@media (min-width:1024px){
  .scene{grid-template-columns:5fr 7fr;gap:48px;padding:32px 0}
  .scene.reverse .scene-media{order:2}
  .scene.reverse .scene-body{order:1}
}
.scene-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--border);
  transition:transform var(--ease),box-shadow var(--ease);
}
.scene-media img:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.scene-body h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:12px}
@media (min-width:1024px){ .scene-body h3{font-size:22px} }
.scene-body p{font-size:15.5px;color:var(--ink-2);line-height:1.85;margin-bottom:16px}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(2,1fr);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
}
@media (min-width:768px){ .stat-bar{grid-template-columns:repeat(4,1fr)} }
.stat-cell{padding:24px 20px;text-align:left;border-bottom:1px solid var(--divider);border-right:1px solid var(--divider)}
@media (min-width:768px){
  .stat-cell{border-bottom:none}
  .stat-cell:last-child{border-right:none}
}
.stat-cell .v{
  font-size:clamp(28px,4vw,34px);font-weight:800;color:var(--primary);line-height:1.1;letter-spacing:-.8px;
}
.stat-cell .k{margin-top:8px;font-size:13.5px;color:var(--ink-2)}

/* ---------- 评价卡 ---------- */
.quote-grid{display:grid;gap:20px;margin-top:28px}
@media (min-width:768px){ .quote-grid{grid-template-columns:repeat(3,1fr)} }
.quote-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
@media (min-width:768px){ .quote-card:nth-child(2){margin-top:22px} .quote-card:nth-child(3){margin-top:-6px} }
.quote-mark{font-size:30px;font-weight:800;color:var(--primary-light);line-height:1}
.quote-card p{margin-top:8px;font-size:15px;color:var(--ink-2);line-height:1.8}
.quote-meta{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3)}
.quote-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--secondary)}

/* ---------- 最新信息 ---------- */
.latest-grid{display:grid;gap:20px}
@media (min-width:1024px){
  .latest-grid{grid-template-columns:1.08fr 1fr;grid-template-rows:repeat(3,minmax(0,1fr));gap:20px 24px}
  .latest-item.is-lead{grid-row:1 / span 3}
}
.latest-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.latest-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D5E1FA}
.latest-item.is-lead{display:flex;flex-direction:column}
.latest-item.is-lead .thumb{aspect-ratio:16/9;width:100%;object-fit:cover}
.latest-item .thumb-sm{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:none}
.latest-item .card-inner{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;height:100%}
.latest-item.is-lead .card-inner{padding:22px 24px 24px}
.latest-item .card-inner h3{font-size:16px;line-height:1.5;font-weight:600;color:var(--ink)}
.latest-item.is-lead .card-inner h3{font-size:20px;font-weight:700;line-height:1.45}
.latest-item .card-inner h3 a:hover{color:var(--primary)}
.latest-item .excerpt{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.latest-item .meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}
.latest-item .meta .sep{width:3px;height:3px;border-radius:50%;background:var(--ink-3);opacity:.6}
.row-latest{display:flex;gap:16px;align-items:flex-start;height:100%}
.row-latest .card-inner{padding:16px 18px;gap:8px}
.empty-state{
  border:1px dashed var(--border);border-radius:var(--r-lg);background:#fff;
  padding:48px 24px;text-align:center;
}
.empty-state svg{width:48px;height:48px;margin:0 auto 14px;color:var(--ink-3)}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item + .faq-item{margin-top:12px}
.faq-item[open]{
  border-left:3px solid var(--primary);
  box-shadow:var(--shadow-1);
}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item[open] summary{color:var(--primary)}
.faq-item summary .chev{
  width:18px;height:18px;flex:none;color:var(--ink-3);
  transition:transform var(--ease),color var(--ease);
}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--primary)}
.faq-item .answer{
  padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2);
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--primary-light);
  padding:72px 0;
  text-align:center;
}
@media (min-width:1024px){ .cta-band{padding:80px 0} }
.cta-band h2{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.3px}
.cta-band p{margin:14px auto 26px;max-width:600px;font-size:15.5px;color:var(--ink-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--border);
  padding:56px 0 24px;
}
.footer-grid{display:grid;gap:28px}
@media (min-width:768px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr} }
@media (min-width:1024px){ .footer-grid{gap:0} .footer-col{padding:0 28px} .footer-col:first-child{padding-left:0} .footer-col:last-child{padding-right:0} }
@media (min-width:1024px){ .footer-col + .footer-col{border-left:1px solid var(--divider)} }
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col p{font-size:14px;color:var(--ink-2);line-height:1.8}
.footer-col h4{
  font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.6px;margin-bottom:14px;
}
.footer-col li + li{margin-top:8px}
.footer-col a{font-size:14px;color:var(--ink-2);transition:color var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--divider);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-2)}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 底部固定转化条 ---------- */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px -18px rgba(16,24,40,.45);
  padding-bottom:env(safe-area-inset-bottom);
}
.convert-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;
}
@media (min-width:1024px){ .convert-inner{min-height:72px} }
.convert-text{font-size:13.5px;color:var(--ink-2);line-height:1.5}
.convert-text strong{color:var(--ink);font-weight:600}
@media (max-width:639px){ .convert-text{max-width:150px} .convert-inner .btn{min-width:140px} }
@media (min-width:768px){ .convert-text{font-size:14.5px} }

/* roulang page: article */
:root{
  --primary:#1F5BFF;
  --primary-dark:#1749D6;
  --primary-soft:#E8F0FF;
  --secondary:#00B8A9;
  --secondary-soft:#E4F8F6;
  --accent:#FF7A33;
  --accent-dark:#E86A26;
  --ink:#101828;
  --ink-2:#475467;
  --ink-3:#98A2B3;
  --line:#E4EAF5;
  --line-2:#EEF2F8;
  --bg:#FFFFFF;
  --bg-alt:#F6F9FF;
  --radius:16px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(16,24,40,.04),0 10px 28px -14px rgba(31,91,255,.16);
  --shadow-2:0 2px 4px rgba(16,24,40,.05),0 18px 38px -18px rgba(31,91,255,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){
  .container{max-width:1240px;padding:0 32px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;cursor:pointer;
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -14px rgba(31,91,255,.7);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:none;}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,122,51,.75);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 22px -18px rgba(16,24,40,.4);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:60px;}
@media (min-width:1024px){.header-inner{height:72px;}}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-mark{width:24px;height:24px;border-radius:7px;background:var(--primary);position:relative;flex:0 0 24px;}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:#fff;opacity:.92;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:.3px;}
.brand-text span{font-size:11.5px;color:var(--ink-3);letter-spacing:.2px;}

.nav-desktop{display:none;}
@media (min-width:1024px){.nav-desktop{display:block;}}
.nav-list{display:flex;align-items:center;gap:4px;list-style:none;}
.nav-item{position:relative;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--ink-2);text-decoration:none;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.nav-link:hover{color:var(--primary);background:var(--bg-alt);}
.nav-link[aria-current="page"]{color:var(--primary);font-weight:600;}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-link.has-caret::before{
  content:"";width:6px;height:6px;margin-right:6px;
  border-right:1.75px solid currentColor;border-bottom:1.75px solid currentColor;
  transform:rotate(45deg) translate(-1px,-1px);opacity:.7;
}

.mega-panel{
  position:absolute;top:calc(100% + 8px);left:-40px;
  width:min(780px,calc(100vw - 64px));
  display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:24px;
  padding:24px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .12s ease-out,transform .12s ease-out,visibility .12s;
}
.nav-item:hover .mega-panel,
.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12px;font-weight:600;color:var(--ink-3);letter-spacing:.6px;margin-bottom:10px;}
.mega-list{list-style:none;}
.mega-list li{margin-bottom:2px;}
.mega-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:9px;font-size:14px;color:var(--ink-2);text-decoration:none;
  transition:background-color .16s ease-out,color .16s ease-out,transform .16s ease-out;
}
.mega-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);flex:0 0 6px;}
.mega-list a:hover{background:var(--bg-alt);color:var(--primary);transform:translateX(2px);}
.mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;}
.mega-card img{aspect-ratio:16/10;width:100%;object-fit:cover;}
.mega-card-body{padding:14px;}
.mega-card-body p{font-size:13.5px;line-height:1.7;color:var(--ink-2);margin-bottom:12px;}

.header-actions{display:flex;align-items:center;gap:12px;}
.header-actions .btn{display:none;}
@media (min-width:1024px){.header-actions .btn{display:inline-flex;}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;background:#fff;
  border:1px solid var(--line);cursor:pointer;
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.nav-toggle:hover{background:var(--bg-alt);border-color:#CFDCF5;}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .2s ease-out;
}
.nav-toggle-icon{position:relative;}
.nav-toggle-icon::before{content:"";position:absolute;top:-6px;left:0;}
.nav-toggle-icon::after{content:"";position:absolute;top:6px;left:0;}

.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:10px 20px 20px;max-height:calc(100vh - 60px);overflow-y:auto;}
.mobile-drawer.is-open{display:block;}
@media (min-width:1024px){.mobile-drawer{display:none !important;}}
.mobile-list{list-style:none;}
.mobile-list a{
  display:flex;align-items:center;height:44px;font-size:16px;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--line-2);
}
.mobile-list a:hover{color:var(--primary);}
.mobile-drawer .btn{width:100%;margin-top:16px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding-top:24px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);}
.breadcrumb a{color:var(--ink-2);text-decoration:none;transition:color .16s ease-out;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#CBD5E1;}
.breadcrumb .current{color:var(--ink-3);max-width:min(60vw,420px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章 ---------- */
.article-shell{max-width:848px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.article-shell{padding:0 24px;}}
.article-head{padding:28px 0 28px;border-bottom:1px solid var(--line-2);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;
  border-radius:6px;font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge-primary{background:var(--primary-soft);color:var(--primary-dark);}
.badge-secondary{background:var(--secondary-soft);color:#03847A;}
.article-head h1{
  font-size:clamp(24px,3.6vw,36px);line-height:1.32;font-weight:800;
  margin:16px 0 14px;color:var(--ink);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);}
.article-meta i{font-style:normal;color:#CBD5E1;}

.article-body{font-size:16.5px;line-height:1.9;color:var(--ink);padding:32px 0 8px;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:clamp(20px,2.6vw,24px);line-height:1.45;font-weight:700;
  margin:44px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;width:4px;height:1em;
  border-radius:2px;background:var(--primary);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 20px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;}
.article-body a{color:var(--primary);text-decoration:none;border-bottom:1px solid rgba(31,91,255,.32);transition:border-color .16s ease-out;}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body blockquote{
  margin:24px 0;padding:20px;background:var(--bg-alt);
  border-left:3px solid var(--primary);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th{background:var(--bg-alt);text-align:left;font-weight:600;padding:12px 14px;border:1px solid var(--line);}
.article-body td{padding:12px 14px;border:1px solid var(--line);color:var(--ink-2);}
.article-body code{background:var(--bg-alt);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14.5px;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:56px 24px;background:var(--bg-alt);border:1px dashed var(--line);border-radius:16px;
  text-align:center;
}
.empty-state svg{color:var(--ink-3);}
.empty-state p{font-size:16px;color:var(--ink-2);}

.inline-cta{
  display:flex;flex-direction:column;gap:18px;
  margin:36px 0 8px;padding:26px;border-radius:16px;
  background:var(--primary-soft);border:1px solid #D3E1FF;
}
.inline-cta h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.inline-cta p{font-size:15px;color:var(--ink-2);line-height:1.75;}
.inline-cta .btn{align-self:flex-start;}
@media (min-width:768px){
  .inline-cta{flex-direction:row;align-items:center;justify-content:space-between;}
  .inline-cta .btn{align-self:auto;flex:0 0 auto;}
}

/* ---------- 相关推荐 ---------- */
.related-section{padding:72px 0 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.sec-title{position:relative;font-size:clamp(22px,3vw,28px);font-weight:700;padding-left:14px;}
.sec-title::before{content:"";position:absolute;left:0;top:.22em;width:4px;height:.85em;border-radius:2px;background:var(--primary);}
.sec-sub{font-size:14.5px;color:var(--ink-2);margin-top:8px;padding-left:14px;}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:16px;overflow:hidden;text-decoration:none;color:inherit;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFDCF5;}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rel-card-body{padding:18px;display:flex;flex-direction:column;gap:10px;}
.rel-card-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.rel-card-body p{font-size:14px;line-height:1.7;color:var(--ink-2);}
.rel-card-body span{font-size:13px;color:var(--primary);font-weight:600;}
.related-actions{display:flex;justify-content:center;margin-top:32px;}

/* ---------- 底部 CTA ---------- */
.bottom-cta{padding:80px 0 88px;}
.cta-box{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:20px;
  padding:48px 24px;text-align:center;
}
.cta-box h2{font-size:clamp(22px,3.2vw,30px);line-height:1.35;margin-bottom:14px;}
.cta-box p{font-size:15.5px;color:var(--ink-2);max-width:620px;margin:0 auto 26px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
  .footer-col + .footer-col{border-left:1px solid var(--line-2);padding-left:28px;}
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-brand strong{font-size:15.5px;font-weight:800;}
.footer-col p{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;letter-spacing:.3px;}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:8px;}
.footer-col ul a{font-size:14px;color:var(--ink-2);text-decoration:none;transition:color .16s ease-out;}
.footer-col ul a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);padding:20px 0;font-size:13.5px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-2);text-decoration:none;font-weight:500;}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 底部转化条 ---------- */
.convert-bar{
  position:sticky;bottom:0;z-index:50;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 -12px 30px -22px rgba(16,24,40,.45);
  padding-bottom:env(safe-area-inset-bottom);
}
.convert-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding-top:8px;padding-bottom:8px;}
@media (min-width:1024px){.convert-inner{min-height:72px;padding-top:0;padding-bottom:0;}}
.convert-text{font-size:13.5px;line-height:1.5;color:var(--ink-2);max-width:58%;}
@media (min-width:768px){.convert-text{font-size:14.5px;max-width:70%;}}
.convert-inner .btn{flex:0 0 auto;min-width:140px;}

/* roulang page: category2 */
:root{
  --primary:#1F5BFF;
  --primary-dark:#1749D6;
  --primary-soft:#E8F0FF;
  --secondary:#00B8A9;
  --secondary-soft:#E4F8F6;
  --accent:#FF7A33;
  --ink:#101828;
  --ink-2:#475467;
  --ink-3:#98A2B3;
  --line:#E4EAF5;
  --line-soft:#EEF2F8;
  --bg:#FFFFFF;
  --bg-alt:#F6F9FF;
  --radius:16px;
  --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.04),0 10px 28px -14px rgba(31,91,255,.16);
  --shadow-md:0 2px 4px rgba(16,24,40,.05),0 20px 44px -20px rgba(31,91,255,.28);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body a{color:var(--primary);text-decoration:none;transition:color .18s ease}
body a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block;height:auto}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1240px}}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -16px rgba(16,24,40,.35)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
@media (max-width:1023px){.header-inner{height:60px;gap:12px}}

.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{width:24px;height:24px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#5C8CFF);position:relative;flex:0 0 auto;display:inline-block}
.brand-mark::after{content:"";position:absolute;left:7px;top:7px;width:10px;height:10px;background:#fff;border-radius:2px;transform:rotate(45deg)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.2px}
.brand-text span{font-size:11px;color:var(--ink-3);font-weight:500;letter-spacing:.4px}

.nav-desktop{flex:1 1 auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-2)}
.nav-link:hover{background:var(--bg-alt);color:var(--primary)}
.nav-link[aria-current="page"]{color:var(--primary);font-weight:600}
.nav-link[aria-current="page"]::after{content:"";position:absolute;left:14px;right:14px;bottom:-14px;height:2px;border-radius:2px;background:var(--primary)}
.has-caret::before{content:"";order:2;width:6px;height:6px;border-right:1.75px solid currentColor;border-bottom:1.75px solid currentColor;transform:rotate(45deg) translate(-1px,-1px);margin-left:2px;opacity:.7}

.mega-panel{
  position:absolute;top:calc(100% + 14px);left:-14px;width:780px;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;
  box-shadow:0 28px 64px -28px rgba(16,24,40,.34);
  display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(6px);pointer-events:none;
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;z-index:70;
}
.nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-title{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.6px;margin-bottom:12px}
.mega-list li{margin-bottom:2px}
.mega-list a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;font-size:14.5px;color:var(--ink-2)}
.mega-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);flex:0 0 auto}
.mega-list a:hover{background:var(--bg-alt);color:var(--primary);transform:translateX(2px)}
.mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.mega-card img{width:100%;height:132px;object-fit:cover}
.mega-card-body{padding:14px}
.mega-card-body p{font-size:13.5px;line-height:1.7;color:var(--ink-2);margin-bottom:12px}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle:hover{background:var(--bg-alt)}
.nav-toggle-icon{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle-icon::before,.nav-toggle-icon::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle-icon::before{top:-6px}
.nav-toggle-icon::after{top:6px}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
}

/* 移动端抽屉 */
.mobile-nav{
  position:fixed;left:0;right:0;top:60px;bottom:0;background:#fff;border-top:1px solid var(--line);
  padding:12px 20px calc(80px + env(safe-area-inset-bottom));overflow-y:auto;z-index:55;
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
}
.mobile-nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
@media (min-width:1024px){.mobile-nav{display:none}}
.mobile-nav .m-link{display:flex;align-items:center;min-height:44px;font-size:16px;font-weight:600;color:var(--ink);padding:0 4px}
.mobile-nav .m-link[aria-current="page"]{color:var(--primary)}
.mobile-nav .m-sub{padding-left:16px;margin-bottom:12px}
.mobile-nav .m-sub a{display:flex;align-items:center;min-height:42px;font-size:14.5px;color:var(--ink-2)}
.mobile-nav .m-sub a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);margin-right:10px}
.mobile-nav .m-sub a:hover{color:var(--primary)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-lg{height:48px;padding:0 28px;font-size:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(31,91,255,.75)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C7D8FF}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#F0691F;color:#fff;transform:translateY(-1px)}
.btn-accent:active{transform:none}

/* 面包屑 */
.breadcrumb-wrap{padding-top:24px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3)}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C7D2E4}

/* 首屏 */
.hero{position:relative;overflow:hidden;background:#fff;padding:48px 0 64px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(31,91,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(31,91,255,.045) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 82%);
  mask-image:linear-gradient(180deg,#000,transparent 82%);
}
.hero-inner{position:relative;max-width:880px}
@media (min-width:1024px){.hero{padding:56px 0 88px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.5px;color:var(--primary-dark);background:var(--primary-soft);border-radius:6px;padding:6px 12px;margin-bottom:20px}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--primary)}
.hero-title{font-size:clamp(26px,5vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.hero-sub{margin-top:18px;font-size:clamp(16px,1.8vw,19px);line-height:1.75;color:var(--ink-2);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.hero-points svg{color:var(--secondary);flex:0 0 auto}

/* 板块 */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:780px;margin-bottom:36px}
.section-title{position:relative;padding-left:16px;font-size:clamp(22px,3.2vw,32px);line-height:1.3;font-weight:700;color:var(--ink)}
.section-title::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--primary)}
.section-desc{margin-top:14px;font-size:16px;color:var(--ink-2)}
.section-lead{font-size:15.5px;color:var(--ink-2)}

/* 时间线 */
.timeline{max-width:860px}
.timeline-item{position:relative;display:grid;grid-template-columns:32px minmax(0,1fr);gap:20px;padding-bottom:30px}
.timeline-item::before{content:"";position:absolute;left:15px;top:42px;bottom:8px;width:2px;background:#DCE7FF;border-radius:2px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item:last-child::before{display:none}
.timeline-num{display:grid;place-items:center;width:32px;height:32px;margin-top:4px;border-radius:50%;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:800}
.timeline-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--ink)}
.timeline-body p{margin-top:8px;font-size:15.5px;line-height:1.8;color:var(--ink-2)}

/* 图文速览 */
.feature-split{display:grid;gap:28px;align-items:center}
@media (min-width:900px){.feature-split{grid-template-columns:5fr 7fr;gap:52px}}
.feature-figure{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.feature-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.feature-body h3{font-size:20px;font-weight:600;color:var(--ink);line-height:1.5}
.feature-body p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.text-link{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:15px;font-weight:600;color:var(--primary)}
.text-link::after{content:"";width:14px;height:8px;border-top:1.75px solid currentColor;border-right:1.75px solid currentColor;transform:rotate(45deg)}
.text-link:hover{color:var(--primary-dark);gap:12px}

/* 数据条 */
.stat-bar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-top:44px}
@media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-cell{background:#fff;padding:24px 20px}
.stat-num{font-size:clamp(26px,3vw,32px);font-weight:800;line-height:1.1;color:var(--primary)}
.stat-label{margin-top:8px;font-size:14px;color:var(--ink-2)}

/* 对照双列卡 */
.compare-grid{display:grid;gap:20px}
@media (min-width:900px){.compare-grid{grid-template-columns:1fr 1fr;gap:28px}}
.compare-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border-radius:6px;padding:5px 10px}
.badge-primary{background:var(--primary-soft);color:var(--primary-dark)}
.badge-secondary{background:var(--secondary-soft);color:#00857A}
.compare-card h3{margin-top:16px;font-size:18px;font-weight:600;color:var(--ink)}
.check-list,.dot-list{margin-top:16px}
.check-list li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15.5px;line-height:1.75;color:var(--ink-2)}
.check-list li::before{content:"";position:absolute;left:2px;top:11px;width:12px;height:7px;border-left:2px solid var(--secondary);border-bottom:2px solid var(--secondary);transform:rotate(-45deg)}
.dot-list li{position:relative;padding-left:22px;margin-bottom:12px;font-size:15.5px;line-height:1.75;color:var(--ink-2)}
.dot-list li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--primary)}

/* FAQ */
.faq-list{max-width:860px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"";flex:0 0 auto;width:9px;height:9px;border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);transform:rotate(45deg);margin-top:-4px;transition:transform .2s ease}
.faq-item[open]{border-left:3px solid var(--primary);box-shadow:0 14px 32px -22px rgba(31,91,255,.45)}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:2px}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* 次级 CTA */
.cta-panel{background:var(--primary-soft);border:1px solid #CFE0FF;border-radius:20px;padding:44px 28px;text-align:center}
.cta-panel h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35;color:var(--ink)}
.cta-panel p{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:640px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px}}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14.5px;color:var(--ink-2)}
.footer-col ul a:hover{color:var(--primary)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;font-weight:800;color:var(--ink)}
.footer-col p{font-size:14.5px;line-height:1.8;color:var(--ink-2);max-width:340px}
@media (min-width:1024px){.footer-col + .footer-col{border-left:1px solid var(--line-soft);padding-left:32px}}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:44px;padding:20px 0 28px;border-top:1px solid var(--line-soft);font-size:13.5px;color:var(--ink-3)}
.footer-bottom a{font-size:13.5px}

/* 底部固定转化条 */
.convert-bar{position:sticky;bottom:0;z-index:58;background:#fff;border-top:1px solid var(--line);box-shadow:0 -10px 28px -20px rgba(16,24,40,.45);padding-bottom:env(safe-area-inset-bottom)}
.convert-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
@media (min-width:1024px){.convert-inner{height:72px}}
.convert-text{font-size:14px;color:var(--ink-2);line-height:1.5}
.convert-inner .btn{min-width:140px;flex:0 0 auto}
@media (max-width:520px){
  .convert-text{display:none}
  .convert-inner{justify-content:flex-end}
}

/* roulang page: category1 */
:root{
  --primary:#1F5BFF;
  --primary-dark:#1749D6;
  --primary-light:#E8F0FF;
  --secondary:#00B8A9;
  --secondary-light:#E4F8F6;
  --accent:#FF7A33;
  --accent-dark:#EA6A22;
  --ink:#101828;
  --muted:#475467;
  --weak:#98A2B3;
  --border:#E4EAF5;
  --line:#EEF2F8;
  --soft:#F6F9FF;
  --radius:16px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(16,24,40,.04),0 10px 28px -14px rgba(31,91,255,.16);
  --shadow-2:0 2px 6px rgba(16,24,40,.06),0 18px 40px -16px rgba(31,91,255,.24);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:#fff;
  font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;
  padding-bottom:88px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1240px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--border);box-shadow:0 8px 24px -20px rgba(16,24,40,.45)}
.header-inner{display:flex;align-items:center;gap:20px;height:60px}
@media (min-width:1024px){.header-inner{height:var(--header-h);gap:32px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary) 0%,#4C82FF 55%,var(--secondary) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:3px;background:#fff;opacity:.92;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.2px}
.brand-text span{font-size:11px;color:var(--weak);letter-spacing:2px}
@media (min-width:1024px){.brand-text strong{font-size:17px}}

.nav-desktop{display:none}
@media (min-width:1024px){.nav-desktop{display:block}}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--muted);
  transition:color .18s ease,background-color .18s ease;position:relative;
}
.nav-link:hover{color:var(--primary);background:var(--soft)}
.nav-link[aria-current="page"]{color:var(--primary);font-weight:700}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.has-caret::before{
  content:"";order:2;width:6px;height:6px;margin-left:2px;margin-top:-3px;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg);
}
.mega-panel{
  position:absolute;top:calc(100% + 10px);left:0;width:660px;z-index:70;
  display:grid;grid-template-columns:1.1fr .9fr;gap:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-2);padding:24px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .14s ease-out,transform .14s ease-out,visibility .14s ease-out;
}
.nav-item:hover .mega-panel,
.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--weak);margin-bottom:12px}
.mega-list{display:grid;gap:4px}
.mega-list a{
  display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:9px;
  font-size:14.5px;color:var(--muted);transition:color .16s ease,background-color .16s ease,transform .16s ease;
}
.mega-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);flex:0 0 auto}
.mega-list a:hover{color:var(--primary);background:var(--soft);transform:translateX(2px)}
.mega-card{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--soft)}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.mega-card-body{padding:14px 16px 16px}
.mega-card-body p{font-size:13.5px;line-height:1.7;color:var(--muted)}
.mega-card-body .btn{margin-top:12px}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.header-actions .btn{display:none}
@media (min-width:1024px){.header-actions .btn{display:inline-flex}}
.nav-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;background:#fff;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--soft);border-color:#D3DFF7}
.nav-toggle-icon,.nav-toggle-icon::before,.nav-toggle-icon::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;
}
.nav-toggle-icon::before,.nav-toggle-icon::after{content:"";position:absolute;left:0}
.nav-toggle-icon::before{top:-6px}
.nav-toggle-icon::after{top:6px}
@media (min-width:1024px){.nav-toggle{display:none}}

/* ---------- Mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  transform:translateY(-102%);transition:transform .28s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;padding:0 0 40px;
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 20px;border-bottom:1px solid var(--line);
}
.drawer-title{font-size:15px;font-weight:700}
.drawer-close{
  width:44px;height:44px;border-radius:10px;font-size:22px;line-height:1;color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--soft);color:var(--primary)}
.drawer-list{padding:12px 20px 0}
.drawer-link{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:10px;
  font-size:16px;color:var(--muted);border-left:2px solid transparent;
}
.drawer-link:hover{background:var(--soft);color:var(--primary)}
.drawer-link.is-active{color:var(--primary);font-weight:700;background:var(--primary-light);border-left-color:var(--primary)}
.drawer-cta{margin:20px 20px 0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}

/* ---------- Breadcrumb ---------- */
.breadcrumb{padding:24px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--weak)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--weak)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb li[aria-current="page"]{color:var(--weak)}

/* ---------- Hero ---------- */
.hero-banner{
  margin-top:20px;padding:48px 0 56px;
  background-color:var(--soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background-image:
    linear-gradient(rgba(31,91,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(31,91,255,.045) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
@media (min-width:1024px){.hero-banner{padding:72px 0 80px}}
.hero-inner{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.hero-inner{grid-template-columns:1.35fr 1fr;gap:48px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:700;letter-spacing:.5px;
}
.hero-title{
  margin-top:18px;font-size:clamp(26px,5vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.5px;
}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--muted);max-width:600px}
@media (min-width:1024px){.hero-sub{font-size:19px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:8px;
  background:#fff;border:1px solid var(--border);font-size:13px;color:var(--muted);
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary)}
.hero-media{
  border-radius:20px;overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--shadow-1);background:#fff;
}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover}

/* ---------- Stat strip ---------- */
.stat-strip{border-bottom:1px solid var(--line);background:#fff}
.stat-inner{display:grid;grid-template-columns:repeat(2,1fr);gap:0}
@media (min-width:768px){.stat-inner{grid-template-columns:repeat(4,1fr)}}
.stat-item{padding:24px 16px;text-align:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (min-width:768px){.stat-item{border-bottom:0}.stat-item:last-child{border-right:0}}
.stat-num{display:block;font-size:30px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-label{display:block;font-size:13.5px;color:var(--muted);margin-top:4px}

/* ---------- Layout ---------- */
.section-main{padding:56px 0 24px}
@media (min-width:1024px){.section-main{padding:80px 0 32px}}
.layout{display:grid;gap:32px}
@media (min-width:1024px){.layout{grid-template-columns:250px 1fr;gap:56px;align-items:start}}

.toc-wrap{position:relative}
.toc{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-1)}
@media (min-width:1024px){.toc{position:sticky;top:104px}}
.toc-title{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--weak);margin-bottom:12px}
.toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}
@media (min-width:1024px){.toc-list{display:grid;gap:4px;overflow:visible;padding-bottom:0}}
.toc-link{
  display:block;padding:9px 12px;border-radius:9px;border-left:1px solid transparent;
  font-size:14.5px;color:var(--muted);white-space:nowrap;
  transition:color .16s ease,background-color .16s ease,border-color .16s ease;
}
.toc-link:hover{color:var(--primary);background:var(--soft)}
.toc-link.is-active{color:var(--primary);font-weight:700;background:var(--primary-light);border-left-color:var(--primary)}
@media (max-width:1023px){
  .toc-title{margin-bottom:10px}
}

/* ---------- Content blocks ---------- */
.content-col{min-width:0}
.section-block{margin-bottom:56px}
.section-block:last-child{margin-bottom:0}
@media (min-width:1024px){.section-block{margin-bottom:72px}}
.section-head{display:flex;align-items:center;gap:12px}
.section-mark{width:3px;height:18px;border-radius:2px;background:var(--primary);flex:0 0 auto}
.section-title{font-size:clamp(22px,3.2vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.3px}
.section-desc{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:760px}
.section-desc + .card-grid{margin-top:26px}

.card-grid{display:grid;gap:20px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr)}}
.info-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3DFF7}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--secondary-light);
  display:inline-flex;align-items:center;justify-content:center;color:var(--secondary);
}
.card-title{margin-top:16px;font-size:19px;font-weight:600;line-height:1.4}
.card-text{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted)}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.card-link svg{transition:transform .18s ease}
.card-link:hover svg{transform:translateX(4px)}

.path-list{display:grid;gap:16px;margin-top:26px}
.path-item{
  display:flex;gap:16px;padding:22px 24px;border:1px solid var(--border);border-radius:var(--radius);
  background:#fff;box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.path-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.path-index{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--primary-light);
  color:var(--primary);font-size:15px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;
}
.path-body h3{font-size:17px;font-weight:600}
.path-body p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--muted)}

.table-wrap{margin-top:26px;border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto;background:#fff;box-shadow:var(--shadow-1)}
.data-table{min-width:560px}
.data-table th{
  background:var(--soft);text-align:left;padding:14px 18px;font-size:13.5px;font-weight:700;color:var(--muted);
  border-bottom:1px solid var(--border);white-space:nowrap;
}
.data-table td{padding:16px 18px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);vertical-align:top}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:hover td{background:#FBFDFF}
.data-table td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:6px;
  background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600;
}
.tag-green{background:var(--secondary-light);color:#00897D}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;margin-top:26px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item[open]{border-color:#CBDCFB;box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);border-left:3px solid transparent;
  border-radius:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item[open] summary{color:var(--primary);border-left-color:var(--primary)}
.faq-item summary::after{
  content:"";margin-left:auto;flex:0 0 auto;width:9px;height:9px;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);
  transition:transform .2s ease;opacity:.65;
}
.faq-item[open] summary::after{transform:rotate(225deg)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- Scroll row ---------- */
.scroll-section{padding:0 0 56px}
@media (min-width:1024px){.scroll-section{padding:0 0 72px}}
.scroll-row{display:grid;gap:16px;margin-top:24px}
@media (min-width:768px){.scroll-row{grid-template-columns:repeat(3,1fr)}}
.mini-card{
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;
  box-shadow:var(--shadow-1);transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.mini-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.mini-card-body{padding:18px 20px 20px}
.mini-card-body h3{font-size:16.5px;font-weight:600}
.mini-card-body p{margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--primary-light);padding:64px 0}
@media (min-width:1024px){.cta-band{padding:80px 0}}
.cta-inner{text-align:center;max-width:720px;margin:0 auto}
.cta-inner h2{font-size:clamp(22px,3.2vw,30px);font-weight:700;line-height:1.35;letter-spacing:-.3px}
.cta-inner p{margin-top:14px;font-size:16px;color:var(--muted)}
.cta-inner .btn{margin-top:26px}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-col{padding-top:4px}
@media (min-width:1024px){.footer-col + .footer-col{border-left:1px solid var(--line);padding-left:32px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand strong{font-size:16px;font-weight:800}
.footer-col p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--muted);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;color:var(--muted);transition:color .16s ease}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--weak);
}
.footer-bottom a{color:var(--muted);font-weight:600}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- Sticky conversion bar ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;
  border-top:1px solid var(--border);box-shadow:0 -10px 28px -22px rgba(16,24,40,.4);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding-top:10px;padding-bottom:10px}
@media (min-width:1024px){.sticky-inner{min-height:72px}}
.sticky-inner p{font-size:13.5px;color:var(--muted);line-height:1.5}
@media (min-width:768px){.sticky-inner p{font-size:14.5px}}
.sticky-inner .btn{flex:0 0 auto}
@media (max-width:639px){.sticky-inner .btn{padding:0 18px}}