/* roulang page: index */
:root{
  --bs-primary:#1C4FD8;
  --bs-primary-rgb:28,79,216;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#475569;
  --bs-body-bg:#FFFFFF;
  --bs-border-radius:16px;
  --bs-link-color:#1C4FD8;
  --bs-link-hover-color:#123A9E;
  --brand:#1C4FD8;
  --brand-dark:#123A9E;
  --brand-light:#E8EEFC;
  --accent:#17C08A;
  --warn:#FF7A2F;
  --ink:#0F1B2D;
  --text:#475569;
  --muted:#7A8798;
  --line:#E4EAF3;
  --surface:#FFFFFF;
  --surface-2:#F6F8FC;
  --danger:#D14B3C;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,27,45,.06),0 4px 12px rgba(15,27,45,.05);
  --sh-2:0 6px 24px rgba(15,27,45,.08);
  --sh-hover:0 12px 32px rgba(28,79,216,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{overflow-x:hidden;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  color:var(--text);
  background:var(--surface);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  padding-bottom:96px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark);text-decoration:underline}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(28,79,216,.35);outline-offset:2px;border-radius:4px}
.container-xl{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--brand);
  background:var(--brand-light);border-radius:999px;padding:6px 14px;font-weight:600;
}
.section{padding-top:var(--sec-pad);padding-bottom:var(--sec-pad)}
.section.tint{background:var(--surface-2)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:28px;line-height:36px;font-weight:700;position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:12px;font-size:16px;color:var(--muted);line-height:1.85}
.badge-soft{
  display:inline-block;font-size:13px;line-height:20px;letter-spacing:.02em;
  color:var(--brand);background:var(--brand-light);border-radius:999px;padding:4px 10px;font-weight:600;
}
.badge-accent{color:#9A4210;background:#FFF0E6}
.badge-green{color:#0C7A57;background:#E4F7F0}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1040;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;fill:#fff}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:28px;margin-left:8px}
.main-nav .nav-link{
  position:relative;color:#3C4A5E;font-size:15px;font-weight:500;padding:22px 0;
  display:inline-flex;align-items:center;min-height:44px;text-decoration:none;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:3px;border-radius:3px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease);
}
.main-nav .nav-link:hover{color:var(--brand);text-decoration:none}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--brand);font-weight:600}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.header-right{display:none;align-items:center;gap:16px;margin-left:auto}
.search-box{position:relative;width:220px}
.search-box input{
  width:100%;height:42px;border-radius:var(--r-input);border:1px solid var(--line);
  background:var(--surface-2);padding:0 14px 0 38px;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--muted)}
.search-box input:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(28,79,216,.12);
}
.search-box svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;fill:var(--muted)}
.link-entry{font-size:14px;color:#3C4A5E;min-height:44px;display:inline-flex;align-items:center;padding:0 4px}
.link-entry:hover{color:var(--brand);text-decoration:none}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:none;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;padding:0 20px;height:44px;min-height:44px;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  cursor:pointer;text-decoration:none;
}
.btn-solid:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);text-decoration:none;box-shadow:var(--sh-hover)}
.btn-solid:active{transform:translateY(1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand);border:1px solid var(--brand);
  border-radius:var(--r-btn);font-size:14px;font-weight:600;padding:0 20px;height:44px;min-height:44px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  cursor:pointer;text-decoration:none;
}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px);text-decoration:none}
.btn-ghost:active{transform:translateY(1px)}
.btn-warn{background:var(--warn);color:#fff}
.btn-warn:hover{background:#E86A20;color:#fff}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;background:#fff;border:1px solid var(--line);
  border-radius:10px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.mobile-nav{border-top:1px solid var(--line);background:#fff}
.mobile-nav .inner{padding:16px 24px 24px;display:flex;flex-direction:column;gap:8px}
.mobile-nav .m-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;color:#3C4A5E;font-weight:500;text-decoration:none;
}
.mobile-nav .m-link:hover,.mobile-nav .m-link.active{background:var(--brand-light);color:var(--brand)}
.mobile-nav .search-box{width:100%;margin-bottom:8px}

@media (min-width:992px){
  .main-nav{display:flex}
  .header-right{display:flex}
  .nav-toggle{display:none}
  .mobile-nav{display:none!important}
}

/* ============ hero ============ */
.hero{padding:56px 0 72px;background:var(--surface)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;min-height:calc(88vh - 68px)}
.hero-copy h1{font-size:26px;line-height:32px;font-weight:800;letter-spacing:-.01em;max-width:15em}
.hero-copy h1 .hl{color:var(--brand)}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.85;color:var(--muted);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.stat-num{font-size:28px;font-weight:800;color:var(--brand);line-height:1.2}
.stat-label{font-size:13px;line-height:20px;color:var(--muted);margin-top:4px}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:visible}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;background:var(--brand-light);box-shadow:var(--sh-2)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;right:-8px;bottom:-18px;width:250px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:12px;display:flex;gap:12px;align-items:center;
  transform:scale(.8);transform-origin:bottom right;
}
.float-card img{width:56px;height:56px;border-radius:10px;object-fit:cover;flex:0 0 auto}
.float-metric{font-size:14px;font-weight:700;color:var(--ink);line-height:1.4}
.float-desc{font-size:12px;line-height:1.5;color:var(--muted)}
@media (min-width:576px){
  .float-card{right:-16px;bottom:-20px;width:280px;transform:scale(.9)}
}
@media (min-width:992px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;min-height:calc(88vh - 68px)}
  .hero-copy h1{font-size:40px;line-height:44px}
  .hero-sub{font-size:17px}
  .float-card{right:-28px;bottom:-28px;width:300px;transform:scale(1)}
}

/* ============ 卖点 1+2 ============ */
.value-grid{display:grid;grid-template-columns:1fr;gap:12px}
.value-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:24px;transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.value-card.large{padding:32px}
.value-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.value-icon svg{width:22px;height:22px;fill:var(--brand)}
.value-card h3{font-size:19px;line-height:28px;font-weight:600}
.value-card p{margin-top:10px;font-size:14px;line-height:24px;color:var(--muted)}
.value-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;min-height:44px}
.value-link svg{width:14px;height:14px;fill:currentColor}
.value-stack{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:992px){
  .value-grid{grid-template-columns:6fr 6fr;gap:24px}
  .value-card.large{padding:32px 32px 40px}
  .value-stack{gap:24px}
  .value-stack .value-card{padding:24px 24px 28px}
}

/* ============ tabs ============ */
.tabs-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.tabs-bar .nav-pill{
  border:none;background:var(--surface-2);color:#3C4A5E;border-radius:999px;
  padding:0 20px;height:44px;font-size:14px;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease);
  flex:1 1 100%;justify-content:center;display:inline-flex;align-items:center;
}
.tabs-bar .nav-pill:hover{background:#E9EDF5}
.tabs-bar .nav-pill.active{background:var(--brand);color:#fff}
@media (min-width:768px){
  .tabs-bar .nav-pill{flex:0 0 auto}
}
.scene-panel{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
.scene-media{border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/9;background:var(--brand-light);box-shadow:var(--sh-1)}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-body h3{font-size:22px;line-height:30px;font-weight:700}
.scene-body p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--text)}
.scene-list{margin-top:20px;display:grid;gap:10px}
.scene-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:24px;color:var(--muted)}
.scene-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;flex:0 0 auto;
}
@media (min-width:992px){
  .scene-panel{grid-template-columns:7fr 5fr;gap:56px}
}

/* ============ 资讯卡 ============ */
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);text-decoration:none}
.news-thumb{aspect-ratio:16/9;background:var(--brand-light);overflow:hidden;flex:0 0 auto}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.news-body h3{
  font-size:18px;line-height:26px;font-weight:600;color:var(--ink);margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  margin-top:10px;font-size:14px;line-height:24px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
}
.news-time{font-size:13px;line-height:20px;color:var(--muted)}
.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state svg{width:44px;height:44px;fill:var(--muted);margin:0 auto 16px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:20px}

/* ============ 评价 ============ */
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:24px;height:100%;display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.review-quote{font-size:15px;line-height:1.85;color:var(--text)}
.review-quote::before{content:"“";color:var(--brand);font-size:26px;line-height:0;margin-right:2px;font-weight:700}
.review-user{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto;
}
.avatar.green{background:#E4F7F0;color:#0C7A57}
.avatar.orange{background:#FFF0E6;color:#9A4210}
.review-name{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.review-role{font-size:13px;color:var(--muted);line-height:1.4}
.partner-wall{
  margin-top:48px;padding-top:32px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px 32px;justify-content:center;
}
.partner-wall span{font-size:14px;color:var(--muted);font-weight:500}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-bottom:12px;
  background:#fff;box-shadow:var(--sh-1);border-left:4px solid transparent;transition:border-color .2s var(--ease);
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--brand)}
.faq-accordion .accordion-button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:none;padding:18px 20px;font-size:17px;line-height:26px;font-weight:600;
  color:var(--ink);text-align:left;cursor:pointer;min-height:44px;
}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand);box-shadow:none;background:#fff}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:3px solid rgba(28,79,216,.35);outline-offset:-3px}
.faq-chev{width:18px;height:18px;flex:0 0 auto;fill:var(--muted);transition:transform .2s var(--ease)}
.faq-accordion .accordion-button:not(.collapsed) .faq-chev{transform:rotate(180deg);fill:var(--brand)}
.faq-accordion .accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ============ 表单 ============ */
.contact-grid{display:grid;grid-template-columns:1fr;gap:40px}
.contact-copy h2{font-size:28px;line-height:36px;font-weight:700;position:relative;padding-left:16px}
.contact-copy h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
.contact-copy p{margin-top:16px;font-size:15px;line-height:1.85;color:var(--muted)}
.contact-points{margin-top:24px;display:grid;gap:12px}
.contact-points li{display:flex;gap:10px;font-size:14px;line-height:24px;color:var(--muted)}
.contact-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;flex:0 0 auto}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:28px;
}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.form-control{
  width:100%;height:46px;border-radius:var(--r-input);border:1px solid var(--line);background:#fff;
  padding:0 14px;font-size:15px;color:var(--ink);font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control::placeholder{color:#A6B0BE}
.form-control:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(28,79,216,.12)}
.form-row{margin-bottom:20px}
.form-hint{font-size:13px;line-height:20px;color:var(--muted);margin-top:8px}
.form-msg{font-size:13px;color:var(--danger);margin-top:6px;display:none}
.form-msg.show{display:block}
@media (min-width:992px){
  .contact-grid{grid-template-columns:5fr 7fr;gap:56px}
}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:var(--brand-light);border-radius:var(--r-card);padding:40px 32px;
  display:flex;flex-direction:column;gap:24px;align-items:flex-start;justify-content:space-between;
}
.cta-band h2{font-size:24px;line-height:32px;font-weight:700}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text);line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:992px){
  .cta-band{flex-direction:row;align-items:center;padding:44px 48px}
  .cta-actions{flex:0 0 auto}
}

/* ============ footer ============ */
.site-footer{background:#0F1B2D;color:#fff;margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand span{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:30em}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;line-height:1.6;color:rgba(255,255,255,.7);text-decoration:none}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 24px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
}
.footer-bottom p,.footer-bottom a{font-size:13px;line-height:20px;color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:#fff}
@media (min-width:768px){
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}
}

/* ============ 底部固定条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;background:#fff;
  box-shadow:0 -6px 24px rgba(15,27,45,.08);padding-bottom:env(safe-area-inset-bottom);
}
.sticky-inner{
  max-width:1200px;margin:0 auto;padding:10px 24px;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.sticky-text{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.sticky-actions{display:flex;align-items:center;gap:16px}
.sticky-actions .btn-solid{padding:0 18px}
.sticky-link{font-size:14px;font-weight:600;min-height:44px;display:inline-flex;align-items:center}
@media (max-width:575px){
  .sticky-inner{padding:10px 16px}
  .sticky-actions{width:100%;justify-content:space-between}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%}
}

/* ============ 响应式细节 ============ */
@media (max-width:991px){
  :root{--sec-pad:72px}
  .section-head h2,.contact-copy h2{font-size:24px;line-height:32px}
}
@media (max-width:575px){
  :root{--sec-pad:56px}
  body{font-size:15px;line-height:1.8}
  .hero-copy h1{font-size:26px;line-height:32px}
  .section-head h2,.contact-copy h2{font-size:22px;line-height:30px}
  .hero-stats{grid-template-columns:1fr;gap:12px}
  .form-card{padding:20px}
}

/* roulang page: category1 */
:root{
    --brand:#1C4FD8;
    --brand-dark:#123A9E;
    --brand-light:#E8EEFC;
    --grass:#17C08A;
    --flare:#FF7A2F;
    --ink:#0F1B2D;
    --body:#475569;
    --muted:#7A8798;
    --line:#E4EAF3;
    --soft:#F6F8FC;
    --white:#FFFFFF;
    --radius-card:16px;
    --radius-img:14px;
    --radius-btn:10px;
    --radius-pill:999px;
    --sh-1:0 1px 2px rgba(15,27,45,.06),0 4px 12px rgba(15,27,45,.05);
    --sh-2:0 6px 24px rgba(15,27,45,.08);
    --sh-hover:0 12px 32px rgba(28,79,216,.14);
    --ease:cubic-bezier(.2,.7,.3,1);
    --bs-primary:#1C4FD8;
    --bs-primary-rgb:28,79,216;
    --bs-body-color:#475569;
    --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    --bs-border-radius:16px;
    --bs-link-color:#1C4FD8;
    --bs-link-hover-color:#123A9E;
    --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:var(--bs-body-font-family);
    font-size:16px;
    line-height:1.85;
    color:var(--body);
    background:var(--white);
    padding-bottom:88px;
    overflow-x:hidden;
  }
  img{max-width:100%;height:auto;display:block;}
  a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
  a:hover{color:var(--brand-dark);text-decoration:underline;}
  h1,h2,h3,h4,h5{margin:0;color:var(--ink);letter-spacing:-.01em;}
  h1{font-size:40px;line-height:1.16;font-weight:800;}
  h2{font-size:28px;line-height:1.3;font-weight:700;}
  h3{font-size:19px;line-height:1.5;font-weight:600;}
  h4{font-size:16px;line-height:1.5;font-weight:700;}
  p{margin:0 0 16px;}
  ul{margin:0;padding:0;list-style:none;}
  button{font-family:inherit;}
  :focus-visible{outline:3px solid rgba(28,79,216,.35);outline-offset:2px;border-radius:6px;}

  .container-xl{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}

  /* ---------- 按钮 ---------- */
  .btn{border-radius:var(--radius-btn);font-weight:600;font-size:15px;padding:11px 22px;line-height:1.4;border:1px solid transparent;transition:all .2s var(--ease);min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:6px;}
  .btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);}
  .btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px);}
  .btn-brand:active{transform:translateY(1px);}
  .btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);}
  .btn-ghost:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);}
  .btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
  .btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);}
  .btn-sm{padding:9px 16px;font-size:14px;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:1040;background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--sh-1);}
  .header-inner{height:68px;display:flex;align-items:center;gap:24px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand:hover{text-decoration:none;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;background:var(--brand);
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .brand-mark svg{width:20px;height:20px;fill:#fff;}
  .brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
  .nav-collapse{display:none;flex:1;align-items:center;gap:12px;}
  .nav-collapse.show{display:block;}
  .main-nav{display:flex;align-items:center;gap:28px;}
  .main-nav .nav-link{
    position:relative;color:var(--ink);font-size:15px;font-weight:500;
    padding:22px 0;white-space:nowrap;min-height:44px;display:inline-flex;align-items:center;
  }
  .main-nav .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:16px;height:3px;border-radius:3px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
  }
  .main-nav .nav-link:hover{color:var(--brand);text-decoration:none;}
  .main-nav .nav-link:hover::after{transform:scaleX(1);}
  .main-nav .nav-link.active{color:var(--brand);font-weight:700;}
  .main-nav .nav-link.active::after{transform:scaleX(1);}
  .nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto;}
  .nav-search{position:relative;}
  .nav-search input{
    width:220px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
    background:var(--soft);padding:0 14px;font-size:14px;color:var(--ink);outline:none;
    transition:all .2s var(--ease);
  }
  .nav-search input::placeholder{color:var(--muted);}
  .nav-search input:focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(28,79,216,.15);}
  .nav-login{font-size:15px;color:var(--ink);font-weight:500;padding:11px 4px;min-height:44px;display:inline-flex;align-items:center;}
  .nav-login:hover{color:var(--brand);text-decoration:none;}
  .nav-toggle{
    margin-left:auto;width:44px;height:44px;border:1px solid var(--line);background:#fff;
    border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}

  /* ---------- 页头横幅 ---------- */
  .page-hero{
    background:var(--soft);border-bottom:1px solid var(--line);
    padding:48px 0 56px;
  }
  .page-hero-inner{display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center;min-height:248px;}
  .crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap;}
  .crumb a{color:var(--muted);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:#C3CCDA;}
  .crumb .current{color:var(--ink);font-weight:600;}
  .page-hero h1{max-width:14em;}
  .page-hero .lead{font-size:17px;color:var(--body);margin:18px 0 0;max-width:32em;}
  .hero-art{
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh-2);
    aspect-ratio:16/10;background:var(--brand-light);
  }
  .hero-art img{width:100%;height:100%;object-fit:cover;}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0;}
  .section-soft{background:var(--soft);}
  .section-head{max-width:760px;margin-bottom:48px;}
  .section-head h2{position:relative;padding-left:16px;margin-bottom:14px;}
  .section-head h2::before{
    content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand);
  }
  .section-head p{font-size:16px;color:var(--body);margin:0;}

  /* ---------- 交替长条 ---------- */
  .alt-row{
    display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
    padding:48px 0;border-bottom:1px solid var(--line);
  }
  .alt-row:last-of-type{border-bottom:0;}
  .alt-row.reverse .alt-media{order:-1;}
  .alt-num{
    font-size:64px;font-weight:800;line-height:1;color:#DCE4F5;letter-spacing:-.03em;margin-bottom:14px;
  }
  .alt-body h3{margin-bottom:14px;}
  .alt-body p{font-size:16px;line-height:1.9;color:var(--body);}
  .link-more{font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;min-height:44px;}
  .link-more::after{content:"→";transition:transform .2s var(--ease);}
  .link-more:hover{text-decoration:none;}
  .link-more:hover::after{transform:translateX(4px);}
  .alt-media{
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh-1);
    aspect-ratio:4/3;background:var(--brand-light);
  }
  .alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .alt-row:hover .alt-media img{transform:scale(1.03);}

  /* ---------- 信息表 ---------- */
  .info-table-wrap{
    margin-top:56px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--sh-1);overflow:hidden;
  }
  .info-table-wrap .table-title{
    padding:22px 24px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  }
  .info-table-wrap .table-title h3{font-size:18px;}
  .tag{
    display:inline-flex;align-items:center;border-radius:var(--radius-pill);
    background:var(--brand-light);color:var(--brand);font-size:13px;letter-spacing:.02em;
    padding:4px 10px;font-weight:600;
  }
  .tag-grass{background:rgba(23,192,138,.12);color:#0F8A63;}
  .tag-flare{background:rgba(255,122,47,.14);color:#C1541A;}
  .data-table{width:100%;border-collapse:collapse;font-size:15px;}
  .data-table thead th{
    background:var(--brand-light);color:var(--brand-dark);font-weight:700;font-size:14px;
    text-align:left;padding:14px 24px;letter-spacing:.02em;white-space:nowrap;
  }
  .data-table tbody td{padding:16px 24px;border-top:1px solid var(--line);color:var(--body);vertical-align:top;}
  .data-table tbody tr:nth-child(even){background:#FBFCFE;}
  .data-table tbody td:first-child{color:var(--ink);font-weight:600;}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--sh-1);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .faq-item.open{border-left:4px solid var(--brand);box-shadow:var(--sh-2);}
  .faq-q{
    width:100%;background:none;border:0;text-align:left;padding:20px 24px;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;min-height:44px;
  }
  .faq-item.open .faq-q{color:var(--brand);}
  .faq-chevron{
    width:22px;height:22px;flex-shrink:0;transition:transform .2s var(--ease);
    stroke:var(--muted);stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round;
  }
  .faq-item.open .faq-chevron{transform:rotate(180deg);stroke:var(--brand);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .faq-item.open .faq-a{max-height:320px;}
  .faq-a-inner{padding:0 24px 22px;font-size:15.5px;line-height:1.9;color:var(--body);}

  /* ---------- 通栏 CTA ---------- */
  .cta-band{
    background:var(--brand-light);border-top:1px solid #D6E1F8;border-bottom:1px solid #D6E1F8;
    padding:64px 0;
  }
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
  .cta-inner h2{font-size:26px;margin-bottom:10px;}
  .cta-inner p{margin:0;color:var(--body);font-size:16px;max-width:44em;}
  .cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#fff;padding:64px 0 0;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
    padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.12);}
  .footer-brand span:last-child{font-size:17px;font-weight:700;color:#fff;}
  .footer-desc{color:rgba(255,255,255,.7);font-size:14px;line-height:1.8;margin:0;max-width:28em;}
  .footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a,.footer-col span{color:rgba(255,255,255,.7);font-size:14px;}
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:22px 0 28px;
  }
  .footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.55);}

  /* ---------- 底部固定转化条 ---------- */
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:1030;background:#fff;
    box-shadow:0 -6px 24px rgba(15,27,45,.10);border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .sticky-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
  .sticky-text{margin:0;font-size:14.5px;color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .sticky-actions{display:flex;align-items:center;gap:18px;flex-shrink:0;}
  .sticky-link{font-size:14.5px;font-weight:600;white-space:nowrap;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1199.98px){
    .page-hero-inner{gap:36px;}
    .alt-row{gap:44px;}
  }
  @media (max-width:991.98px){
    .header-inner{height:64px;}
    .nav-collapse.show{
      display:block;position:absolute;left:0;right:0;top:100%;background:#fff;
      border-bottom:1px solid var(--line);box-shadow:var(--sh-2);padding:16px 24px 24px;
    }
    .site-header{position:sticky;}
    .header-inner{position:relative;}
    .main-nav{flex-direction:column;align-items:flex-start;gap:0;}
    .main-nav .nav-link{width:100%;padding:14px 0;border-bottom:1px solid var(--line);}
    .main-nav .nav-link::after{bottom:8px;}
    .nav-tools{flex-direction:column;align-items:stretch;width:100%;margin-top:16px;gap:12px;}
    .nav-search input{width:100%;}
    .nav-login{justify-content:flex-start;}
    .section{padding:72px 0;}
    .page-hero{padding:36px 0 44px;}
    .page-hero-inner{grid-template-columns:1fr;gap:28px;}
    .hero-art{aspect-ratio:16/9;}
    .alt-row{grid-template-columns:1fr;gap:24px;padding:36px 0;}
    .alt-row.reverse .alt-media{order:0;}
    .alt-num{font-size:52px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:767.98px){
    body{font-size:15.5px;}
    h1{font-size:30px;}
    h2{font-size:24px;}
    .section{padding:56px 0;}
    .section-head{margin-bottom:32px;}
    .data-table{font-size:14px;}
    .data-table thead th,.data-table tbody td{padding:12px 16px;}
    .data-table thead th{font-size:13px;}
    .info-table-wrap .table-title{padding:16px;}
    .faq-q{padding:16px;font-size:16px;}
    .faq-a-inner{padding:0 16px 18px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
  }
  @media (max-width:575.98px){
    h1{font-size:26px;line-height:1.28;}
    h2{font-size:22px;}
    .container-xl{padding-left:16px;padding-right:16px;}
    .page-hero h1{max-width:100%;}
    .page-hero .lead{font-size:16px;}
    .btn{width:100%;}
    .btn-sm{width:auto;}
    .nav-toggle{display:flex;}
    .alt-num{font-size:44px;}
    .cta-actions{width:100%;}
    .sticky-inner{height:auto;padding:10px 0;flex-wrap:wrap;gap:10px;}
    .sticky-actions{width:100%;justify-content:space-between;}
    .sticky-text{white-space:normal;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

/* roulang page: article */
:root{
  --primary:#1C4FD8;
  --primary-d:#123A9E;
  --primary-l:#E8EEFC;
  --green:#17C08A;
  --green-l:#E4F7F0;
  --orange:#FF7A2F;
  --ink:#0F1B2D;
  --body:#475569;
  --muted:#7A8798;
  --border:#E4EAF3;
  --bg:#FFFFFF;
  --bg-alt:#F6F8FC;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,27,45,.06),0 4px 12px rgba(15,27,45,.05);
  --sh-2:0 6px 24px rgba(15,27,45,.08);
  --sh-hover:0 12px 32px rgba(28,79,216,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1C4FD8;
  --bs-primary-rgb:28,79,216;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-color:#475569;
  --bs-border-radius:10px;
  --bs-link-color:#1C4FD8;
  --bs-link-hover-color:#123A9E;
  --bs-body-bg:#FFFFFF;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:80px;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-d);text-decoration:underline}
button{font-family:inherit}
h1,h2,h3,h4,h5{color:var(--ink);margin:0;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(28,79,216,.35);outline-offset:2px;border-radius:6px}
.container-xl{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}

/* ============ 按钮 ============ */
.btn-primary-s{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border:none;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  cursor:pointer;transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary-s:hover{background:var(--primary-d);color:#fff;transform:translateY(-2px);text-decoration:none;box-shadow:0 8px 20px rgba(28,79,216,.22)}
.btn-primary-s:active{transform:translateY(1px);box-shadow:none}
.btn-ghost-s{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border:1px solid var(--border);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.btn-ghost-s:hover{border-color:var(--primary);color:var(--primary-d);background:var(--primary-l);text-decoration:none;transform:translateY(-2px)}
.btn-ghost-s:active{transform:translateY(1px)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1020;background:#fff;
  border-bottom:1px solid var(--border);transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;fill:#fff}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--primary-d)}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.main-nav .nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;
  font-size:15px;font-weight:500;color:var(--body);padding:0;text-decoration:none;
  transition:color .2s var(--ease);
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:3px;border-radius:3px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .22s var(--ease);
}
.main-nav .nav-link:hover{color:var(--primary);text-decoration:none}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--primary);font-weight:600}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.nav-side{margin-left:auto;display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-search{position:relative}
.nav-search input{
  width:220px;height:40px;padding:0 14px 0 38px;border:1px solid var(--border);
  border-radius:var(--r-input);background:#fff;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(28,79,216,.14)}
.nav-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;fill:var(--muted)}
.nav-login{font-size:15px;font-weight:500;color:var(--ink);padding:10px 4px;white-space:nowrap}
.nav-login:hover{color:var(--primary-d);text-decoration:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:10px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;fill:var(--ink)}
.mobile-panel{border-top:1px solid var(--border);padding:16px 0 20px}
.mobile-panel .m-link{
  display:flex;align-items:center;min-height:46px;padding:0 4px;font-size:15px;
  color:var(--ink);font-weight:500;border-bottom:1px solid var(--border);
}
.mobile-panel .m-link.active{color:var(--primary)}
.mobile-panel .nav-search{margin-top:14px}
.mobile-panel .nav-search input{width:100%}

/* ============ 面包屑 ============ */
.breadcrumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--border)}
.breadcrumb{display:flex;align-items:center;gap:10px;padding:16px 0;font-size:13px;color:var(--muted);flex-wrap:nowrap;overflow:hidden}
.breadcrumb a{color:var(--muted);font-weight:500}
.breadcrumb a:hover{color:var(--primary);text-decoration:none}
.breadcrumb .sep{color:#C3CCDA}
.breadcrumb .current{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46%}

/* ============ 文章头 ============ */
.article-head{padding:40px 0 32px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:var(--primary-l);color:var(--primary);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-cat.is-orange{background:#FFF1E8;color:#D2601F}
.article-title{
  font-size:40px;line-height:1.28;font-weight:800;color:var(--ink);
  margin:16px 0 0;letter-spacing:-.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;margin-top:18px;font-size:13px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:14px;height:14px;fill:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CCDA;display:inline-block}
.hero-figure{
  margin-top:28px;border-radius:var(--r-card);overflow:hidden;background:var(--bg-alt);
  aspect-ratio:21/9;position:relative;border:1px solid var(--border);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.img-fallback{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:var(--primary-l);color:var(--primary);font-size:14px;font-weight:600;
}

/* ============ 正文阅读区 ============ */
.reading-wrap{padding:56px 0 0}
.article-body{font-size:17px;line-height:1.9;color:var(--body)}
.article-body p{margin:0 0 20px;font-size:17px;line-height:1.9}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:26px;line-height:1.42;font-weight:700;color:var(--ink);
  margin:48px 0 18px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--primary);
}
.article-body h3{font-size:19px;line-height:1.6;font-weight:600;color:var(--ink);margin:32px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.article-body strong{color:var(--ink);font-weight:600}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:10px;font-size:16.5px;line-height:1.85}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--primary);opacity:.75;
}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;
  background:var(--primary-l);color:var(--primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--primary-l);border-left:4px solid var(--primary);
  border-radius:0 var(--r-img) var(--r-img) 0;color:#26406E;font-size:16px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px 0 8px;width:100%}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);line-height:1.7;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--border);border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{background:var(--primary-l);color:var(--ink);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--border);line-height:1.7}
.article-body tbody tr:nth-child(even){background:#FAFBFE}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body a{text-decoration:underline;text-underline-offset:3px}
.article-body hr{border:none;border-top:1px solid var(--border);margin:36px 0}

/* ============ 侧边栏 ============ */
.side-col{position:sticky;top:92px}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px;margin-bottom:20px;
}
.side-title{
  font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:4px;height:16px;border-radius:4px;background:var(--primary)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto}
.toc-link{
  display:block;padding:9px 12px;font-size:14px;line-height:1.6;color:var(--muted);
  border-left:3px solid transparent;border-radius:0 8px 8px 0;
  transition:all .2s var(--ease);
}
.toc-link:hover{color:var(--primary);background:#FAFBFE;text-decoration:none}
.toc-link.is-active{color:var(--primary);border-left-color:var(--primary);background:var(--primary-l);font-weight:600}
.side-rel{display:flex;flex-direction:column;gap:14px}
.side-rel a{display:block}
.side-rel .rel-title{
  font-size:14px;font-weight:600;color:var(--ink);line-height:1.62;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.side-rel a:hover .rel-title{color:var(--primary-d)}
.side-rel .rel-meta{font-size:12px;color:var(--muted);margin-top:6px}
.side-rel .rel-item + .rel-item{border-top:1px dashed var(--border);padding-top:14px}
.side-back{width:100%}

/* ============ 文章尾部 ============ */
.article-foot{padding:56px 0 96px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:20px 0;border-top:1px solid var(--border)}
.tag-row .tag-label{font-size:13px;color:var(--muted);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;
  background:var(--bg-alt);border:1px solid var(--border);color:var(--body);
  font-size:13px;font-weight:500;transition:all .2s var(--ease);
}
.tag:hover{background:var(--primary-l);border-color:var(--primary-l);color:var(--primary-d);text-decoration:none}

.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.pn-card{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);transition:all .2s var(--ease);
}
.pn-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);text-decoration:none}
.pn-card .pn-dir{font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.02em}
.pn-card .pn-title{
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pn-card.is-next{text-align:right}

.sec-head{margin-bottom:24px}
.sec-head h2{font-size:24px;font-weight:700;color:var(--ink)}
.sec-head p{font-size:14px;color:var(--muted);margin-top:8px}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);text-decoration:none}
.rel-thumb{aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;position:relative}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.rel-body h3{
  font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{
  font-size:14px;line-height:1.7;color:var(--muted);margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-foot{
  margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;
}
.rel-foot .mini-badge{padding:3px 10px;border-radius:999px;background:var(--primary-l);color:var(--primary);font-weight:600;font-size:12px}
.rel-foot .mini-date{color:var(--muted)}

/* ============ 通栏 CTA ============ */
.cta-band{
  margin-top:48px;background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--r-card);
  padding:36px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;font-weight:700;color:var(--ink)}
.cta-band p{font-size:15px;color:var(--body);margin-top:10px;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 空态 ============ */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-icon{
  width:72px;height:72px;border-radius:20px;background:var(--primary-l);
  display:flex;align-items:center;justify-content:center;margin:0 auto 20px;
}
.empty-icon svg{width:34px;height:34px;fill:var(--primary)}
.empty-state h1{font-size:26px;font-weight:700;margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:24px}

/* ============ 页脚 ============ */
.site-footer{background:#0F1B2D;color:#fff;margin-top:0;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--primary)}
.footer-brand span:last-child{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7)}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.7);line-height:1.6}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6)}

/* ============ 底部固定条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;background:#fff;
  box-shadow:0 -4px 20px rgba(15,27,45,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.sticky-tip{font-size:15px;font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-actions{display:flex;align-items:center;gap:18px;flex-shrink:0}
.sticky-link{font-size:14px;font-weight:600;color:var(--body);white-space:nowrap}
.sticky-link:hover{color:var(--primary-d);text-decoration:none}
.sticky-bar .btn-primary-s{min-height:42px;padding:10px 20px;font-size:14px}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search input{width:180px}
  .main-nav{gap:20px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-search,.nav-login,.nav-side>.btn-primary-s{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{gap:12px}
  .article-title{font-size:32px}
  .side-col{position:static;margin-top:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .reading-wrap{padding-top:36px}
  .article-foot{padding:40px 0 72px}
}
@media (max-width:767px){
  .container-xl{padding:0 16px}
  .article-title{font-size:28px}
  .article-body,.article-body p{font-size:16px}
  .article-body h2{font-size:22px;margin-top:40px}
  .article-body h3{font-size:18px}
  .hero-figure{aspect-ratio:16/9}
  .pn-grid{grid-template-columns:1fr}
  .pn-card.is-next{text-align:left}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:20px}
  .cta-actions{width:100%}
  .cta-actions .btn-primary-s,.cta-actions .btn-ghost-s{width:100%}
  .sticky-tip{font-size:13px}
  .sticky-actions{gap:10px}
  .sticky-inner{padding:0 14px;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .article-title{font-size:24px;line-height:1.35}
  .article-body,.article-body p{font-size:16px;line-height:1.85}
  .sticky-tip{max-width:120px}
  .sticky-bar .btn-primary-s{padding:9px 14px;font-size:13px}
  .sticky-link{font-size:13px}
  .btn-primary-s,.btn-ghost-s{width:100%}
  .sticky-actions .sticky-link{width:auto}
}

/* roulang page: category2 */
:root{
  --brand:#1C4FD8;
  --brand-dark:#123A9E;
  --brand-soft:#E8EEFC;
  --mint:#17C08A;
  --orange:#FF7A2F;
  --ink:#0F1B2D;
  --text:#475569;
  --muted:#7A8798;
  --line:#E4EAF3;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FC;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(15,27,45,.06), 0 4px 12px rgba(15,27,45,.05);
  --sh2:0 6px 24px rgba(15,27,45,.08);
  --shh:0 12px 32px rgba(28,79,216,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --danger:#D14B3C;

  --bs-primary:#1C4FD8;
  --bs-primary-rgb:28,79,216;
  --bs-body-color:#475569;
  --bs-body-bg:#FFFFFF;
  --bs-border-radius:10px;
  --bs-link-color:#1C4FD8;
  --bs-link-hover-color:#123A9E;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  padding-bottom:96px;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);text-decoration:underline;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(28,79,216,.35);outline-offset:2px;border-radius:6px;}

.container-xl{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:96px 0;}
.section-soft{background:var(--bg-soft);}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;font-weight:600;
  color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.sec-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;}
.sec-title{font-size:28px;font-weight:700;position:relative;padding-left:16px;margin-bottom:14px;}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);}
.sec-sub{font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--sh1);}
.btn-brand:hover{background:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:var(--shh);}
.btn-brand:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D8F7;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);text-decoration:none;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-lg{min-height:52px;padding:0 30px;font-size:16px;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1050;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh1);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;fill:#fff;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;
  font-size:15px;font-weight:500;color:#3C4A5E;padding:0 2px;
}
.nav-link:hover{color:var(--brand);text-decoration:none;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:transparent;transition:background-color .2s var(--ease);
}
.nav-link:hover::after{background:#C9D8F7;}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{background:var(--brand);}
.nav-right{display:flex;align-items:center;gap:16px;margin-left:auto;}
.nav-search{position:relative;width:220px;}
.nav-search input{
  width:100%;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;
  padding:0 38px 0 14px;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(28,79,216,.16);}
.nav-search svg{
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:2;pointer-events:none;
}
.nav-text-link{font-size:14px;color:#3C4A5E;padding:8px 2px;}
.nav-text-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);stroke-width:2;fill:none;}
.nav-mobile{display:none;border-top:1px solid var(--line);padding:16px 0 20px;}
.nav-mobile .m-nav-links{display:flex;flex-direction:column;gap:4px;margin-bottom:14px;}
.nav-mobile .m-nav-links a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:10px;
  font-size:15px;color:#3C4A5E;
}
.nav-mobile .m-nav-links a:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none;}
.nav-mobile .m-nav-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav-mobile .m-search input{width:100%;height:46px;border-radius:var(--r-btn);border:1px solid var(--line);padding:0 14px;font-size:15px;color:var(--ink);}
.nav-mobile .m-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(28,79,216,.16);}
.nav-mobile.open{display:block;}

/* ---------- 页头 ---------- */
.page-hero{
  background:var(--bg-soft);
  border-bottom:1px solid var(--line);
  padding:36px 0;
  min-height:190px;
  display:flex;align-items:center;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;flex-wrap:wrap;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#C3CCDA;}
.crumbs .cur{color:var(--ink);font-weight:500;}
.page-hero h1{
  font-size:40px;line-height:1.15;font-weight:800;letter-spacing:-.01em;
  margin-bottom:12px;
}
.hero-sub{font-size:16px;color:var(--muted);max-width:620px;}

/* ---------- 功能卡片网格 ---------- */
.feat-card{
  height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#D5E0F5;}
.feat-icon{
  width:48px;height:48px;border-radius:14px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.feat-icon svg{width:24px;height:24px;stroke:var(--brand);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.feat-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.feat-card p{font-size:14px;line-height:1.8;color:var(--text);}
.feat-tag{
  display:inline-block;margin-top:16px;font-size:13px;color:var(--mint);
  background:rgba(23,192,138,.1);border-radius:999px;padding:4px 12px;font-weight:600;
}

/* ---------- 对比表 ---------- */
.cmp-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-card);box-shadow:var(--sh1);background:#fff;}
table.cmp{width:100%;min-width:660px;border-collapse:separate;border-spacing:0;}
table.cmp thead th{
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:15px;font-weight:700;text-align:left;
  padding:18px 24px;border-bottom:1px solid var(--line);
}
table.cmp thead th:first-child{border-top-left-radius:var(--r-card);}
table.cmp thead th:last-child{border-top-right-radius:var(--r-card);}
table.cmp td{
  padding:18px 24px;font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line);background:#fff;
}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp tbody tr:hover td{background:#FBFCFE;}
table.cmp td:first-child{color:var(--ink);font-weight:600;}
.check{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;}
.check svg{width:16px;height:16px;stroke:var(--brand);stroke-width:2.6;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{position:relative;padding-right:8px;}
.step::after{
  content:"";position:absolute;top:22px;left:60px;right:-24px;height:1px;background:var(--line);
}
.step:last-child::after{display:none;}
.step-num{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid #C9D8F7;
  color:var(--brand);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  position:relative;z-index:1;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.75;color:var(--muted);}

/* ---------- 图文区 ---------- */
.media-img{
  border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--bg-soft);
  box-shadow:var(--sh1);
}
.media-img img{width:100%;height:100%;object-fit:cover;}
.media-body h2{font-size:28px;font-weight:700;position:relative;padding-left:16px;margin-bottom:16px;}
.media-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);}
.media-body p{font-size:16px;line-height:1.85;margin-bottom:20px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.8;
  padding:12px 0;border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:none;}
.check-list .dot{
  width:22px;height:22px;border-radius:50%;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;margin-top:4px;
}
.check-list .dot svg{width:12px;height:12px;stroke:var(--brand);stroke-width:3;fill:none;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-left:4px solid transparent;
  border-radius:var(--r-card);box-shadow:var(--sh1);overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.open{border-left-color:var(--brand);box-shadow:var(--sh2);}
.faq-h{margin:0;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:64px;padding:18px 24px;border:none;background:transparent;
  text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-item.open .faq-q{color:var(--brand);}
.chev{flex:0 0 auto;width:22px;height:22px;display:flex;align-items:center;justify-content:center;}
.chev svg{width:16px;height:16px;stroke:currentColor;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease);}
.faq-item.open .chev svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-item.open .faq-a{max-height:320px;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text);}

/* ---------- 通栏 CTA ---------- */
.cta-band{
  background:var(--brand-soft);border-radius:20px;
  padding:56px 40px;text-align:center;
}
.cta-band h2{font-size:28px;font-weight:700;margin-bottom:14px;}
.cta-band p{font-size:16px;color:var(--text);max-width:620px;margin:0 auto 28px;}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a,.footer-col li span{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col li a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6);}

/* ---------- 底部固定转化条 ---------- */
.cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;
  background:#fff;box-shadow:0 -6px 24px rgba(15,27,45,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.cta-bar-inner{
  max-width:1200px;margin:0 auto;height:64px;
  padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.cta-bar-text{font-size:15px;font-weight:600;color:var(--ink);}
.cta-bar-actions{display:flex;align-items:center;gap:20px;}
.cta-bar-link{font-size:14px;color:var(--muted);}
.cta-bar-link:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav{gap:22px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .main-nav,.nav-search,.nav-text-link,.nav-right .btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-right{gap:10px;}
  .page-hero h1{font-size:32px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .step::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .sec-title{font-size:24px;}
  .page-hero{padding:28px 0;min-height:0;}
  .page-hero h1{font-size:28px;line-height:1.28;}
  .hero-sub{font-size:15px;}
  .cta-band{padding:40px 22px;border-radius:16px;}
  .cta-band h2{font-size:22px;}
  .cta-band p{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{margin-top:36px;}
}
@media (max-width:575px){
  body{font-size:15px;}
  .container-xl{padding-left:18px;padding-right:18px;}
  .brand-text{font-size:16px;}
  .page-hero h1{font-size:24px;}
  .sec-title{font-size:22px;}
  .media-body h2{font-size:22px;}
  .steps{grid-template-columns:1fr;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .cta-actions{flex-direction:column;}
  .cta-bar-inner{height:auto;padding:10px 18px;gap:10px;}
  .cta-bar-text{font-size:14px;}
  .cta-bar-actions{gap:12px;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a p{padding:0 18px 20px;}
  .nav-mobile{padding:14px 0 18px;}
}