/* roulang page: index */
:root{
  --primary-600:#1F55D6;
  --primary-700:#1741A8;
  --primary-050:#EEF3FE;
  --ink-900:#101B33;
  --ink-600:#46536E;
  --ink-400:#7A879E;
  --line:#E4EAF6;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --accent:#F2A23B;
  --teal:#12B5A6;
  --success:#1FA971;
  --focus:0 0 0 3px rgba(31,85,214,.35);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-sm:0 1px 2px rgba(16,27,51,.05);
  --shadow-card:0 8px 24px -8px rgba(16,27,51,.10);
  --shadow-hover:0 16px 36px -12px rgba(16,27,51,.18);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
h1,h2,h3,h4{color:var(--ink-900);line-height:1.3;margin:0;font-weight:700;}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease;}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;border:none;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-7) 0;}
.section-surface{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:var(--sp-5);}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;color:var(--primary-700);
  background:var(--primary-050);border:1px solid #DCE6FC;
  padding:6px 14px;border-radius:999px;margin-bottom:18px;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-600);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  border:1.5px solid transparent;cursor:pointer;
}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--primary-600);color:#fff;box-shadow:0 6px 16px -8px rgba(31,85,214,.75);}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;border-color:var(--primary-600);color:var(--primary-700);}
.btn-secondary:hover{background:var(--primary-050);transform:translateY(-1px);}
.btn-ghost{color:var(--ink-600);padding:0 8px;}
.btn-ghost:hover{color:var(--primary-600);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--primary-600);
  font-size:15px;position:relative;padding-bottom:3px;
}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--primary-600);transition:width .22s ease;}
.link-arrow:hover{color:var(--primary-700);}
.link-arrow:hover::after{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:999px;line-height:1.6;}
.badge-teal{background:rgba(18,181,166,.12);color:#0E8C80;}
.badge-accent{background:rgba(242,162,59,.16);color:#9A6212;}
.badge-blue{background:var(--primary-050);color:var(--primary-700);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-card);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary-600);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 6px 14px -8px rgba(31,85,214,.9);
}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.nav-tabs{display:flex;align-items:center;gap:4px;margin:0 auto;background:transparent;padding:2px;border-radius:999px;}
.tab{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--ink-600);border:1px solid transparent;
}
.tab:hover{background:var(--primary-050);color:var(--primary-700);}
.tab.is-active{background:var(--primary-050);color:var(--primary-700);font-weight:600;border-color:var(--primary-600);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:18px 24px 26px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px;}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:10px;
  border:1px solid var(--line);font-size:15px;font-weight:500;color:var(--ink-900);background:#fff;
}
.mobile-drawer a.drawer-link:hover,.mobile-drawer a.drawer-link.is-active{background:var(--primary-050);border-color:#D6E2FB;color:var(--primary-700);}
.mobile-drawer .btn{width:100%;}

/* ---------- Hero ---------- */
.hero{padding:72px 0 var(--sp-7);background:linear-gradient(180deg,#FFFFFF 0%,#F5F8FD 100%);}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.hero-copy h1{font-size:44px;margin-bottom:20px;letter-spacing:-.01em;}
.hero-sub{font-size:17px;line-height:1.85;max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px;}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px;}
.hero-stats div{display:flex;flex-direction:column;}
.hero-stats strong{font-size:28px;font-weight:700;color:var(--ink-900);line-height:1.2;font-family:"Inter","DIN Alternate",system-ui,sans-serif;}
.hero-stats span{font-size:12.5px;color:var(--ink-400);margin-top:4px;}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:#fff;min-height:420px;display:flex;align-items:center;justify-content:center;
}
.hero-visual::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.88);z-index:1;}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;}
.hero-card{
  position:relative;z-index:2;width:calc(100% - 72px);background:#fff;border-radius:16px;
  border:1px solid var(--line);box-shadow:var(--shadow-hover);overflow:hidden;
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-card-body{padding:16px 18px 18px;}
.hero-card-body p{font-size:14px;color:var(--ink-600);margin-top:8px;line-height:1.7;}

/* ---------- 功能卖点（编号卡） ---------- */
.features-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.features-aside{position:sticky;top:104px;}
.features-aside h2{font-size:32px;margin-bottom:16px;}
.features-aside p{margin-bottom:22px;font-size:16px;}
.features-list{display:flex;flex-direction:column;}
.feature-item{
  display:flex;gap:22px;padding:26px 20px 26px 24px;border-bottom:1px solid var(--line);
  position:relative;transition:background-color .2s ease,transform .2s ease;
}
.feature-item:first-child{border-top:1px solid var(--line);}
.feature-item::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:3px;
  background:var(--primary-600);opacity:0;transition:opacity .2s ease;
}
.feature-item:hover{background:#FBFCFE;}
.feature-item:hover::before{opacity:1;}
.feature-num{
  flex:0 0 auto;width:46px;height:46px;border-radius:12px;background:var(--primary-050);
  color:var(--primary-700);display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;font-family:"Inter","DIN Alternate",system-ui,sans-serif;
}
.feature-item h3{font-size:18px;margin-bottom:8px;}
.feature-item p{font-size:15px;line-height:1.8;}

/* ---------- 演示区 ---------- */
.demo-switch{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px;}
.chip{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14.5px;font-weight:500;color:var(--ink-600);
  transition:all .18s ease;
}
.chip:hover{border-color:#C9D8F7;color:var(--primary-700);}
.chip.is-active{background:var(--primary-050);border-color:var(--primary-600);color:var(--primary-700);font-weight:600;}
.demo-grid{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.demo-points{display:flex;flex-direction:column;gap:20px;}
.demo-points li{display:flex;gap:12px;}
.demo-points .tick{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:rgba(18,181,166,.14);
  color:#0E8C80;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:6px;
}
.demo-points strong{display:block;color:var(--ink-900);font-size:15.5px;font-weight:600;margin-bottom:2px;}
.demo-points p{font-size:14px;color:var(--ink-600);line-height:1.75;}
.demo-shot{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:#fff;}
.demo-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- 证据区（深色） ---------- */
.proof{background:var(--primary-700);color:rgba(255,255,255,.82);}
.proof h2{color:#fff;font-size:32px;margin-bottom:14px;}
.proof .proof-lead{font-size:16px;color:rgba(255,255,255,.78);max-width:680px;margin-bottom:44px;}
.proof-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:52px;}
.metric{border-left:2px solid rgba(255,255,255,.22);padding-left:18px;}
.metric strong{
  display:block;font-size:32px;font-weight:700;color:var(--accent);line-height:1.2;
  font-family:"Inter","DIN Alternate",system-ui,sans-serif;
}
.metric span{font-size:13.5px;color:rgba(255,255,255,.75);display:block;margin-top:6px;}
.proof-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{background:#fff;border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);color:var(--ink-600);}
.quote-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--primary-050);color:var(--primary-700);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto;
}
.quote-head .who{font-size:14.5px;font-weight:600;color:var(--ink-900);line-height:1.4;}
.quote-head .role{font-size:12.5px;color:var(--ink-400);}
.stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:10px;}
.quote-card p{font-size:14.5px;line-height:1.8;}

/* ---------- 最新信息（CMS 列表） ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.news-head h2{font-size:32px;margin-bottom:10px;}
.news-grid{display:grid;grid-template-columns:5fr 7fr;gap:28px;align-items:start;}
.news-feature{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6E2FB;}
.news-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-feature .body{padding:24px;}
.news-feature h3{font-size:20px;line-height:1.45;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-feature p{font-size:14.5px;line-height:1.8;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-rows{display:flex;flex-direction:column;gap:16px;}
.news-row{
  display:grid;grid-template-columns:212px 1fr;gap:20px;padding:16px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:#D6E2FB;}
.news-row .thumb{border-radius:12px;overflow:hidden;background:#EDF1F8;}
.news-row .thumb img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
.news-row h3{font-size:16.5px;line-height:1.5;margin:8px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-row p{font-size:13.8px;line-height:1.75;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-400);}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#C7D0E2;display:inline-block;}
.empty-state{
  width:100%;max-width:360px;margin:0 auto;text-align:center;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:44px 24px;
}
.empty-state svg{width:48px;height:48px;margin:0 auto 16px;color:#B7C4DC;}
.empty-state p{font-size:15px;color:var(--ink-400);margin-bottom:18px;}

/* ---------- 价格区 ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 28px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.price-card.is-featured{border-top:4px solid var(--primary-600);padding-top:30px;}
.price-tag{
  position:absolute;top:16px;right:16px;background:rgba(242,162,59,.16);color:#9A6212;
  font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.price-card h3{font-size:19px;margin-bottom:8px;}
.price-card .tier-note{font-size:13.8px;color:var(--ink-400);margin-bottom:20px;}
.price-num{
  font-size:32px;font-weight:700;color:var(--ink-900);line-height:1.2;margin-bottom:6px;
  font-family:"Inter","DIN Alternate",system-ui,sans-serif;
}
.price-num small{font-size:14px;font-weight:500;color:var(--ink-400);margin-left:6px;font-family:inherit;}
.price-sub{font-size:13.5px;color:var(--ink-400);margin-bottom:24px;}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;}
.price-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;}
.price-list li::before{
  content:"";flex:0 0 auto;width:16px;height:16px;margin-top:6px;border-radius:50%;
  background:var(--primary-050) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M4 8.4l2.4 2.4L12 5.6' fill='none' stroke='%231F55D6' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/12px no-repeat;
}
.price-card .btn{margin-top:auto;width:100%;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;align-items:start;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q:hover{color:var(--primary-700);}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:400;color:var(--ink-400);transition:transform .22s ease,color .22s ease;
}
.faq-item.is-open .faq-icon{color:var(--primary-600);transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 22px 20px;border-top:1px dashed var(--line);padding-top:16px;margin-top:2px;}
.faq-a-inner p{font-size:15px;line-height:1.85;color:var(--ink-600);}

/* ---------- 末尾 CTA ---------- */
.cta-strip{background:var(--primary-050);padding:64px 0;text-align:center;}
.cta-strip h2{font-size:30px;margin-bottom:14px;}
.cta-strip p{font-size:16px;max-width:640px;margin:0 auto 28px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:4fr 4fr 4fr;gap:40px;padding-bottom:52px;}
.footer-brand .logo-text{color:#fff;font-size:18px;}
.footer-brand .logo-mark{background:var(--primary-600);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin-top:16px;max-width:320px;}
.footer-brand .contact{margin-top:18px;font-size:14px;color:rgba(255,255,255,.68);line-height:2;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-col a:hover{color:#A8C0FF;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;display:flex;
  align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a:hover{color:#A8C0FF;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 8px 8px 20px;
  box-shadow:var(--shadow-hover);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .hint{font-size:14px;color:var(--ink-600);}
.float-cta .btn{height:40px;}

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .hero-copy h1{font-size:38px;}
  .features-grid{gap:40px;}
}
@media (max-width:1024px){
  .nav-tabs{display:none;}
  .menu-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero{padding:52px 0 64px;}
  .hero-visual{min-height:340px;order:-1;}
  .features-grid{grid-template-columns:1fr;gap:28px;}
  .features-aside{position:static;}
  .demo-grid{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:1fr;}
  .proof-metrics{grid-template-columns:repeat(2,1fr);gap:28px;}
  .proof-cards{grid-template-columns:1fr;}
  .pricing-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto;}
  .price-card.is-featured{order:-1;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .hero-copy h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .hero-stats{gap:28px;}
  .section-head h2,.news-head h2,.features-aside h2,.proof h2,.cta-strip h2{font-size:25px;}
  .news-row{grid-template-columns:1fr;}
  .news-row .thumb img{aspect-ratio:16/9;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;border-left:none;border-right:none;border-bottom:none;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));justify-content:space-between;
  }
  .float-cta .hint{display:none;}
  .float-cta .btn{flex:1;height:44px;}
  body{padding-bottom:76px;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .hero-copy h1{font-size:28px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-visual{min-height:240px;}
  .hero-card{width:calc(100% - 32px);}
  .proof-metrics{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .feature-item{padding:22px 8px 22px 18px;gap:16px;}
}

/* roulang page: article */
:root{
  --primary-600:#1F55D6;
  --primary-700:#1741A8;
  --primary-050:#EEF3FE;
  --ink-900:#101B33;
  --ink-600:#46536E;
  --ink-400:#7A879E;
  --line:#E4EAF6;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --accent:#F2A23B;
  --teal:#12B5A6;
  --success:#1FA971;
  --danger:#E0574C;
  --focus:rgba(31,85,214,.35);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-chip:999px;
  --shadow-sm:0 1px 2px rgba(16,27,51,.05);
  --shadow-card:0 8px 24px -8px rgba(16,27,51,.10);
  --shadow-hover:0 16px 36px -12px rgba(16,27,51,.18);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --num:"Inter","DIN Alternate",var(--font);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
h1,h2,h3,h4{color:var(--ink-900);line-height:1.3;font-weight:700}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus);border-radius:6px}
::selection{background:var(--primary-050);color:var(--primary-700)}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--primary-600);color:#fff;box-shadow:0 6px 16px -8px rgba(31,85,214,.9)}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:var(--primary-700)}
.btn-secondary{background:#fff;color:var(--primary-700);border-color:var(--primary-600);border-width:1.5px}
.btn-secondary:hover{background:var(--primary-050)}
.btn-ghost{color:var(--ink-600);padding:0 12px;height:40px;border-radius:var(--radius-btn)}
.btn-ghost:hover{color:var(--primary-600);background:var(--primary-050)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 32px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.link-text{color:var(--ink-600);font-size:15px;font-weight:600;position:relative;transition:color .2s ease}
.link-text::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--primary-600);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.link-text:hover{color:var(--primary-600)}
.link-text:hover::after{transform:scaleX(1)}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-chip);font-size:12.5px;font-weight:600;line-height:1}
.badge-teal{background:rgba(18,181,166,.12);color:#0E8E82}
.badge-accent{background:rgba(242,162,59,.15);color:#A96512}
.badge-primary{background:var(--primary-050);color:var(--primary-700)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-card)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--num);font-weight:700;font-size:15px;letter-spacing:.5px;
}
.logo-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:.2px}
.nav-tabs{display:flex;align-items:center;gap:4px;background:transparent;padding:0;overflow-x:auto;scrollbar-width:none}
.nav-tabs::-webkit-scrollbar{display:none}
.tab{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:var(--radius-chip);
  font-size:15px;color:var(--ink-600);border:1px solid transparent;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{background:var(--primary-050);color:var(--primary-700)}
.tab.is-active{background:var(--primary-050);color:var(--primary-700);border-color:var(--primary-600);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0 24px}
.mobile-drawer.is-open{display:block}
.mobile-drawer .drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:center;min-height:48px;padding:10px 12px;
  background:var(--bg);border-radius:12px;font-size:17px;color:var(--ink-600);
}
.mobile-drawer a.is-active{background:var(--primary-050);color:var(--primary-700);font-weight:600;border:1px solid var(--primary-600)}
.mobile-drawer .drawer-cta{display:block;width:100%;text-align:center;background:var(--primary-600);color:#fff;font-weight:600;border-radius:var(--radius-btn)}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;padding:28px 0 44px;border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(255,255,255,.92),rgba(255,255,255,.94)),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-400);padding:16px 0 20px}
.breadcrumb a{color:var(--ink-600);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary-600)}
.breadcrumb .sep{color:#C3CDE0}
.breadcrumb .current{color:var(--ink-400);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{font-size:36px;letter-spacing:-.2px;margin:14px 0 18px;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-400)}
.article-meta .dot{width:1px;height:12px;background:var(--line)}
.article-meta .cat{color:var(--primary-700);font-weight:600}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,820px) 240px;gap:48px;justify-content:center;align-items:start}
.article-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);padding:44px 48px;font-size:16px;line-height:1.9;color:var(--ink-600);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin-bottom:16px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.35;margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:4px;height:18px;border-radius:2px;background:var(--primary-600);
}
.article-body h3{font-size:19px;margin:28px 0 12px}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 16px;line-height:1.9}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:6px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--primary-600);
}
.article-body ol{counter-reset:li;padding-left:0}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:6px;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.35em;font-family:var(--num);font-weight:700;
  color:var(--primary-700);font-size:15px;
}
.article-body a{color:var(--primary-600);border-bottom:1px solid rgba(31,85,214,.45);transition:color .2s ease,border-color .2s ease}
.article-body a:hover{color:var(--primary-700);border-bottom-color:var(--primary-700)}
.article-body img{border-radius:12px;margin:18px auto;border:1px solid var(--line)}
.article-body figure{margin:20px 0}
.article-body figcaption,.article-body .caption{text-align:center;font-size:12.5px;color:var(--ink-400);margin-top:8px}
.article-body blockquote{
  background:var(--primary-050);border-left:3px solid var(--primary-600);border-radius:8px;
  padding:16px 20px;margin:20px 0;color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;background:#fff;border-radius:10px;overflow:hidden}
.article-body th{background:var(--primary-050);color:var(--ink-900);text-align:left;font-weight:600;padding:12px 14px}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body tr:nth-child(even) td{background:#F7FAFF}
.article-body code{background:var(--primary-050);color:var(--primary-700);border-radius:6px;padding:2px 6px;font-size:14px}

/* 目录 */
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}
.toc-box,.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);padding:20px}
.toc-title{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:12px;letter-spacing:.2px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14px;color:var(--ink-600);padding:7px 10px;border-radius:8px;line-height:1.5;
  border-left:2px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:var(--primary-050);color:var(--primary-700)}
.toc-list a.is-current{color:var(--primary-600);font-weight:600;border-left-color:var(--primary-600);background:var(--primary-050)}
.side-card p{font-size:14px;color:var(--ink-600);margin-bottom:14px}
.side-card .side-links{display:flex;flex-direction:column;gap:6px}
.side-card .side-links a{font-size:14px;color:var(--ink-600);padding:6px 0;transition:color .2s ease,transform .2s ease}
.side-card .side-links a:hover{color:var(--primary-600);transform:translateX(2px)}
.toc-mobile{display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);margin-bottom:20px;overflow:hidden}
.toc-mobile summary{list-style:none;cursor:pointer;padding:16px 20px;font-size:16px;font-weight:600;color:var(--ink-900);display:flex;align-items:center;justify-content:space-between}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"＋";color:var(--primary-600);font-size:18px}
.toc-mobile[open] summary::after{content:"－"}
.toc-mobile .toc-list{padding:0 12px 16px}

/* 文章尾 */
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin:36px 0 0;padding-top:24px;border-top:1px dashed var(--line)}
.article-tags .badge{height:28px}
.article-end{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);padding:64px 24px;text-align:center;
}
.empty-state .empty-mark{
  width:64px;height:64px;border-radius:18px;background:var(--primary-050);color:var(--primary-600);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:26px;font-weight:700;font-family:var(--num);
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{max-width:420px;margin:0 auto 22px;color:var(--ink-600)}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 72px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:28px}
.section-head p{font-size:15px;color:var(--ink-400);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFDDFA}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--primary-050)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:18px;line-height:1.5}
.news-body p{font-size:14.5px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:12.5px;color:var(--ink-400)}

/* ---------- FAQ ---------- */
.faq-section{padding:0 0 72px}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"＋";font-size:22px;color:var(--ink-400);flex-shrink:0;transition:transform .2s ease,color .2s ease}
.faq-item[open] summary::after{content:"－";color:var(--primary-600)}
.faq-item .faq-answer{padding:16px 22px 20px;border-top:1px dashed var(--line);font-size:16px;line-height:1.85;color:var(--ink-600)}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--primary-050);padding:64px 0}
.cta-band .cta-inner{text-align:center;max-width:720px;margin:0 auto}
.cta-band h2{font-size:30px;margin-bottom:12px}
.cta-band p{font-size:16px;color:var(--ink-600);margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{background:var(--primary-600)}
.footer-brand p{font-size:14.5px;line-height:1.85;max-width:44ch;margin-bottom:18px}
.footer-brand .contact{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.55)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:#A8C0FF;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;
  gap:10px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#A8C0FF}

/* 浮动返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:150;width:48px;height:48px;border-radius:14px;
  background:var(--primary-600);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 28px -10px rgba(31,85,214,.75);opacity:0;visibility:hidden;
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;font-size:18px;
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{background:var(--primary-700);transform:translateY(-2px)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,820px);gap:0}
  .article-side{display:none}
  .toc-mobile{display:block}
}
@media (max-width:991px){
  .nav-tabs{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .nav-wrap{height:56px}
  .article-hero{padding:8px 0 32px}
  .article-hero h1{font-size:25px;margin:12px 0 16px}
  .breadcrumb{font-size:13px;padding:14px 0 14px}
  .breadcrumb .current{white-space:normal}
  .article-main{padding:32px 0 48px}
  .article-body{padding:26px 20px;border-radius:14px;font-size:16px}
  .article-body h2{font-size:20px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .faq-grid{grid-template-columns:1fr;gap:16px}
  .card-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .section-head h2{font-size:23px}
  .cta-band{padding:48px 0}
  .cta-band h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .related,.faq-section{padding-bottom:48px}
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:400px){
  .article-hero h1{font-size:23px}
  .btn-lg{width:100%;padding:0 20px}
  .article-end .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
:root{
  --primary-600:#1F55D6;
  --primary-700:#1741A8;
  --primary-050:#EEF3FE;
  --ink-900:#101B33;
  --ink-600:#46536E;
  --ink-400:#7A879E;
  --line:#E4EAF6;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --accent:#F2A23B;
  --teal:#12B5A6;
  --success:#1FA971;
  --warning:#E8A33D;
  --danger:#E0574C;
  --ring:rgba(31,85,214,.35);
  --r-xs:8px;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(16,27,51,.05);
  --sh-card:0 8px 24px -8px rgba(16,27,51,.10);
  --sh-hover:0 16px 36px -12px rgba(16,27,51,.18);
  --container:1200px;
  --gap:24px;
  --sec-pad:96px;
}
/* ========== reset/base ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
h1{font-size:44px;}
h2{font-size:32px;}
h3{font-size:22px;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
a{color:var(--primary-600);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease;}
a:hover{color:var(--primary-700);}
img{max-width:100%;display:block;border:0;}
ul,ol{margin:0 0 16px;padding-left:22px;}
li{margin-bottom:8px;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--ring);border-radius:var(--r-xs);}
::selection{background:var(--primary-050);color:var(--primary-700);}
/* ========== 容器 ========== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#FFFFFF;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--sh-card);
}
.header-inner{
  height:68px;
  display:flex;align-items:center;gap:24px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--ink-900);font-weight:700;font-size:18px;
  flex:0 0 auto;
}
.logo:hover{color:var(--primary-700);}
.logo-mark{
  width:34px;height:34px;border-radius:var(--r-sm);
  background:var(--primary-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;
  font-size:15px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 6px 14px -6px rgba(31,85,214,.6);
}
.logo-text{letter-spacing:.3px;}
.nav-tabs{
  display:flex;align-items:center;gap:4px;
  flex:1 1 auto;justify-content:center;
  overflow-x:auto;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.tab{
  display:inline-flex;align-items:center;
  height:36px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-600);
  white-space:nowrap;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{background:var(--primary-050);color:var(--primary-700);}
.tab.is-active{
  background:var(--primary-050);
  color:var(--primary-700);
  border-color:var(--primary-600);
  font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--ink-900);
  position:relative;border-radius:2px;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--primary-600);color:#fff;box-shadow:0 8px 18px -10px rgba(31,85,214,.8);}
.btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;border:1.5px solid var(--primary-600);color:var(--primary-700);}
.btn-secondary:hover{background:var(--primary-050);color:var(--primary-700);}
.btn-ghost{background:transparent;color:var(--ink-600);padding:0 12px;}
.btn-ghost:hover{color:var(--primary-600);}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
/* ========== 移动抽屉 ========== */
.mobile-drawer{
  display:none;
  position:fixed;left:0;right:0;top:56px;bottom:0;
  background:#fff;z-index:79;
  padding:20px;
  overflow-y:auto;
  border-top:1px solid var(--line);
}
.mobile-drawer.is-open{display:block;}
.drawer-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px;
}
.drawer-grid .tab{
  height:48px;justify-content:center;font-size:17px;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;
}
.drawer-grid .tab.is-active{border-color:var(--primary-600);background:var(--primary-050);color:var(--primary-700);}
.drawer-note{
  font-size:13px;color:var(--ink-400);margin-bottom:20px;line-height:1.7;
}
/* ========== 内页 Hero ========== */
.page-hero{
  position:relative;
  background-image:linear-gradient(rgba(255,255,255,.90),rgba(255,255,255,.90)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--ink-400);margin-bottom:20px;
}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--primary-600);}
.breadcrumb .sep{color:var(--ink-400);}
.breadcrumb em{font-style:normal;color:var(--ink-400);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(18,181,166,.12);color:#0E8F84;
  font-size:12.5px;font-weight:600;margin-bottom:16px;
}
.hero-badge::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);
}
.page-hero h1{max-width:840px;margin-bottom:16px;}
.hero-lead{
  max-width:760px;font-size:17px;color:var(--ink-600);line-height:1.85;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.hero-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:28px;
  padding-top:22px;border-top:1px solid var(--line);
}
.hero-meta div{min-width:120px;}
.hero-meta strong{
  display:block;font-size:26px;font-weight:700;color:var(--primary-700);
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;line-height:1.2;
}
.hero-meta span{font-size:12.5px;color:var(--ink-400);}
/* ========== 板块 ========== */
.section{padding:var(--sec-pad) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--primary-600);
  letter-spacing:1px;margin-bottom:10px;
}
/* ========== 图文清单 ========== */
.flow-list{display:flex;flex-direction:column;gap:26px;}
.flow-item{
  display:grid;grid-template-columns:4fr 6fr;gap:32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.flow-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-hover);
  border-color:#CFDDFB;
}
.flow-media{
  position:relative;overflow:hidden;border-radius:var(--r-md);background:#E9EFFA;
}
.flow-media img{
  width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;
  transition:transform .4s ease;
}
.flow-item:hover .flow-media img{transform:scale(1.03);}
.flow-body{display:flex;flex-direction:column;justify-content:center;}
.flow-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:var(--r-sm);
  background:var(--primary-050);color:var(--primary-700);
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;
  font-size:16px;font-weight:700;margin-bottom:14px;
}
.flow-body h3{font-size:21px;margin-bottom:12px;}
.flow-body p{font-size:15.5px;color:var(--ink-600);line-height:1.85;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;font-size:14.5px;font-weight:600;color:var(--primary-600);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease,gap .2s ease;
}
.link-arrow::after{content:"→";font-family:Inter,system-ui,sans-serif;transition:transform .2s ease;}
.link-arrow:hover{color:var(--primary-700);border-bottom-color:var(--primary-700);}
.link-arrow:hover::after{transform:translateX(3px);}
/* ========== 提示条 ========== */
.tip-inline{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--primary-050);
  border-left:3px solid var(--primary-600);
  border-radius:var(--r-sm);
  padding:18px 20px;margin-top:32px;
}
.tip-inline strong{color:var(--primary-700);font-size:15px;display:block;margin-bottom:4px;}
.tip-inline p{font-size:14.5px;color:var(--ink-600);margin:0;}
/* ========== FAQ ========== */
.faq-grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:var(--gap);align-items:start;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFDDFB;box-shadow:var(--sh-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;
  padding:20px 24px;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;position:relative;
}
.faq-icon::before,
.faq-icon::after{
  content:"";position:absolute;background:var(--ink-400);border-radius:2px;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-icon::before{left:4px;top:11px;width:16px;height:2px;}
.faq-icon::after{left:11px;top:4px;width:2px;height:16px;}
.faq-item.is-open .faq-icon::before{background:var(--primary-600);}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);background:var(--primary-600);}
.faq-a{
  display:none;
  padding:0 24px 20px;
  border-top:1px dashed var(--line);
  margin-top:0;
}
.faq-a p{
  padding-top:16px;font-size:15.5px;line-height:1.85;color:var(--ink-600);margin:0;
}
.faq-item.is-open .faq-a{display:block;}
/* ========== 继续了解 ========== */
.more-links{
  display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);
}
.more-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.more-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-hover);
  border-color:#CFDDFB;
}
.more-card span{
  display:inline-block;font-size:12.5px;font-weight:600;
  color:#0E8F84;background:rgba(18,181,166,.12);
  border-radius:var(--r-pill);padding:3px 10px;margin-bottom:14px;
}
.more-card h3{font-size:18px;margin-bottom:10px;}
.more-card p{font-size:14.5px;color:var(--ink-600);line-height:1.8;margin:0;}
/* ========== CTA 条 ========== */
.cta-band{
  background:var(--primary-050);
  border-top:1px solid var(--line);
  padding:64px 0;
  text-align:center;
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{max-width:620px;margin:0 auto 28px;font-size:16px;color:var(--ink-600);}
.cta-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}
/* ========== 浮动 CTA ========== */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:70;
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:8px 10px 8px 20px;
  box-shadow:var(--sh-hover);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .float-text{font-size:14px;color:var(--ink-600);white-space:nowrap;}
.float-cta .float-link{font-size:14px;color:var(--primary-600);white-space:nowrap;}
/* ========== 页脚 ========== */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  font-size:14.5px;
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;
  padding-bottom:44px;
}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo:hover{color:#A8C0FF;}
.footer-brand p{color:rgba(255,255,255,.72);line-height:1.85;margin-bottom:18px;max-width:420px;}
.contact{font-size:13.5px;color:rgba(255,255,255,.6);line-height:2;}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;
}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{
  color:rgba(255,255,255,.72);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:#A8C0FF;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#A8C0FF;}
/* ========== 响应式 ========== */
@media (max-width:1199px){
  .container{max-width:960px;}
  h1{font-size:38px;}
  :root{--sec-pad:80px;}
}
@media (max-width:991px){
  :root{--gap:20px;}
  h1{font-size:34px;}
  h2{font-size:27px;}
  .nav-tabs{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:56px;}
  .mobile-drawer{top:56px;}
  .flow-item{grid-template-columns:1fr;gap:20px;padding:20px;}
  .flow-media img{aspect-ratio:16/9;}
  .faq-grid{grid-template-columns:1fr;}
  .more-links{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767px){
  body{padding-bottom:76px;}
  :root{--sec-pad:64px;}
  .container{padding:0 20px;}
  h1{font-size:29px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .page-hero{padding:36px 0 44px;}
  .hero-lead{font-size:16px;}
  .hero-meta{gap:18px;justify-content:space-between;}
  .hero-meta strong{font-size:22px;}
  .hero-actions .btn{width:100%;}
  .flow-body h3{font-size:19px;}
  .flow-body p{font-size:15px;}
  .cta-actions .btn{width:100%;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    border:0;border-top:1px solid var(--line);
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    justify-content:space-between;gap:10px;
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta .float-link{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:10px;}
  .section-head{margin-bottom:32px;}
}
@media (max-width:400px){
  h1{font-size:26px;}
  .logo-text{font-size:16px;}
  .drawer-grid{grid-template-columns:1fr;}
}

/* roulang page: category3 */
:root{
  --primary-600:#1F55D6;
  --primary-700:#1741A8;
  --primary-050:#EEF3FE;
  --ink-900:#101B33;
  --ink-600:#46536E;
  --ink-400:#7A879E;
  --line:#E4EAF6;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --accent:#F2A23B;
  --teal:#12B5A6;
  --success:#1FA971;
  --warning:#E8A33D;
  --danger:#E0574C;
  --ring:0 0 0 3px rgba(31,85,214,.35);
  --r-card:16px;
  --r-btn:10px;
  --r-chip:999px;
  --r-img:14px;
  --sh-sm:0 1px 2px rgba(16,27,51,.05);
  --sh-card:0 8px 24px -8px rgba(16,27,51,.10);
  --sh-hover:0 16px 36px -12px rgba(16,27,51,.18);
  --header-h:68px;
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:22px}
h4{font-size:18px}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section.is-tight{padding:64px 0}

/* ---------- 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 .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-card)}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--ink-900);flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(160deg,#2E63E0,#1741A8);
  color:#fff;display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.4px;
  font-family:Inter,"DIN Alternate","Segoe UI",sans-serif;
}
.logo-text{font-size:18px;letter-spacing:.2px}
.nav-tabs{
  margin-left:auto;display:flex;align-items:center;gap:4px;
  padding:4px;border-radius:var(--r-chip);
  background:var(--bg);border:1px solid var(--line);
}
.tab{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;
  border-radius:var(--r-chip);font-size:14.5px;color:var(--ink-600);
  white-space:nowrap;transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.tab:hover{background:var(--primary-050);color:var(--primary-700)}
.tab.is-active{background:#fff;color:var(--primary-700);font-weight:600;box-shadow:inset 0 0 0 1px var(--primary-600)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;cursor:pointer;padding:0;place-items:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;margin:3px auto;transition:transform .22s ease,opacity .22s ease}
.menu-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.mobile-drawer{display:none}
.mobile-drawer.is-open{
  display:block;position:fixed;left:0;right:0;top:var(--header-h);bottom:0;
  background:#fff;padding:20px 20px 32px;overflow-y:auto;
  border-top:1px solid var(--line);z-index:55;
}
.mobile-drawer .drawer-tab{
  display:block;padding:16px 18px;border:1px solid var(--line);
  border-radius:12px;margin-bottom:10px;font-size:17px;color:var(--ink-900);
}
.mobile-drawer .drawer-tab.is-active{border-color:var(--primary-600);background:var(--primary-050);color:var(--primary-700);font-weight:600}
.mobile-drawer .drawer-cta{width:100%;margin-top:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary-600);color:#fff}
.btn-primary:hover{background:var(--primary-700);transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-secondary{background:#fff;border-color:var(--primary-600);color:var(--primary-700)}
.btn-secondary:hover{background:var(--primary-050)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:none;box-shadow:var(--ring)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary-600);font-weight:600;font-size:14.5px;transition:gap .2s ease,color .2s ease}
.link-arrow::after{content:"→"}
.link-arrow:hover{color:var(--primary-700);gap:10px}
.link-ghost{color:var(--ink-600);font-size:14px;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}
.link-ghost:hover{color:var(--primary-600);border-bottom-color:var(--primary-600)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-chip);font-size:12.5px;font-weight:600;letter-spacing:.2px;
}
.badge-teal{background:rgba(18,181,166,.12);color:#0E8E83}
.badge-accent{background:rgba(242,162,59,.16);color:#B4701A}
.badge-primary{background:var(--primary-050);color:var(--primary-700)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--primary-700);background:var(--primary-050);
  padding:6px 14px;border-radius:var(--r-chip);margin-bottom:18px;
}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  padding:56px 0 64px;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.90)}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-400);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--ink-600);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary-600)}
.breadcrumb .sep{color:#C3CDE0}
.page-hero h1{font-size:40px;max-width:820px}
.hero-lead{max-width:760px;margin-top:18px;font-size:17px;color:var(--ink-600)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-600)}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- 问答图文卡网格 ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.media-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D5E0F7}
.media-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--primary-050)}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.media-card:hover .media-thumb img{transform:scale(1.03)}
.media-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:24px 26px 26px}
.media-body h3{font-size:19px}
.media-body p{font-size:15px;color:var(--ink-600);margin:0}
.media-body .link-arrow{margin-top:auto;padding-top:6px}

/* ---------- 数据条 ---------- */
.data-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
}
.data-item{padding:34px 22px;text-align:center;border-right:1px solid var(--line)}
.data-item:last-child{border-right:0}
.data-num{
  display:block;font-size:30px;font-weight:700;color:var(--accent);
  line-height:1.2;font-family:Inter,"DIN Alternate","Segoe UI",sans-serif;
}
.data-label{display:block;margin-top:8px;font-size:13.5px;color:var(--ink-400)}

/* ---------- 用户反馈卡 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.quote-card{
  position:relative;margin:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:34px 28px 24px;
}
.quote-mark{
  position:absolute;top:14px;left:24px;font-size:56px;line-height:1;
  color:var(--primary-050);font-weight:700;font-family:Georgia,serif;
}
.quote-text{position:relative;margin:14px 0 22px;font-size:15.5px;color:var(--ink-600);line-height:1.85}
.quote-meta{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.quote-name{display:block;font-size:14.5px;font-weight:600;color:var(--ink-900);line-height:1.5}
.quote-role{display:block;font-size:12.5px;color:var(--ink-400)}
.stars{margin-left:auto;color:var(--accent);font-size:14px;letter-spacing:2px;white-space:nowrap}

/* ---------- FAQ 折叠 ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;align-items:start}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:#CFDCF7;box-shadow:var(--sh-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;display:grid;place-items:center;
  color:var(--ink-400);font-size:20px;line-height:1;transition:transform .25s ease,color .25s ease;
}
.faq-item.is-open .faq-icon{color:var(--primary-600);transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:16px 24px 22px;border-top:1px dashed var(--line);font-size:15px;color:var(--ink-600)}

/* ---------- 继续了解 ---------- */
.next-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.next-card{
  display:flex;flex-direction:column;gap:8px;padding:26px 24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.next-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D5E0F7}
.next-card h3{font-size:17px}
.next-card p{font-size:14px;margin:0;color:var(--ink-400)}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--primary-050);border:1px solid #DCE6FB;
  border-radius:24px;padding:56px 32px;text-align:center;
}
.cta-band h2{margin-bottom:12px}
.cta-band p{max-width:640px;margin:0 auto 26px;color:var(--ink-600)}
.cta-band .btn-group{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ---------- 浮动按钮 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:14px;
  padding:10px 12px 10px 20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-chip);
  box-shadow:var(--sh-hover);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta .float-text{font-size:14px;color:var(--ink-600);white-space:nowrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-mark{background:linear-gradient(160deg,#2E63E0,#1741A8)}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.85;max-width:420px}
.footer-brand .contact{margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.6);line-height:2}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col ul a:hover{color:#A8C0FF;transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  font-size:12.5px;color:rgba(255,255,255,.6);flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-bottom a:hover{color:#A8C0FF}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:960px}
  h1{font-size:40px}
}
@media (max-width:991px){
  h1{font-size:34px}
  h2{font-size:27px}
  .header-inner{gap:14px}
  .nav-tabs{display:none}
  .menu-toggle{display:grid;margin-left:auto}
  .header-actions .btn{display:none}
  .qa-grid{grid-template-columns:repeat(2,1fr)}
  .data-strip{grid-template-columns:repeat(2,1fr)}
  .data-item:nth-child(2){border-right:0}
  .data-item:nth-child(1),.data-item:nth-child(2){border-bottom:1px solid var(--line)}
  .quote-grid{grid-template-columns:1fr}
  .next-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  :root{--header-h:56px}
  body{font-size:16px;padding-bottom:76px}
  h1{font-size:32px}
  h2{font-size:25px}
  h3{font-size:19px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section.is-tight{padding:48px 0}
  .page-hero{min-height:220px;padding:32px 0 44px}
  .page-hero h1{font-size:29px}
  .hero-lead{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .qa-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .data-item{padding:26px 16px}
  .data-num{font-size:26px}
  .cta-band{padding:40px 22px;border-radius:18px}
  .cta-band .btn{width:100%}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;border:0;
    border-top:1px solid var(--line);padding:8px 16px;
    padding-bottom:calc(8px + env(safe-area-inset-bottom));
    justify-content:space-between;transform:translateY(100%);
  }
  .float-cta.is-visible{transform:none}
  .float-cta .float-text{font-size:13.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .site-footer{margin-top:64px}
}
@media (max-width:400px){
  h1{font-size:28px}
  .page-hero h1{font-size:26px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
}

/* roulang page: category2 */
:root{
  --primary-600:#1F55D6;
  --primary-700:#1741A8;
  --primary-050:#EEF3FE;
  --ink-900:#101B33;
  --ink-600:#46536E;
  --ink-400:#7A879E;
  --line:#E4EAF6;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --accent:#F2A23B;
  --teal:#12B5A6;
  --success:#1FA971;
  --danger:#E0574C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-chip:999px;
  --shadow-sm:0 1px 2px rgba(16,27,51,.05);
  --shadow-card:0 8px 24px -8px rgba(16,27,51,.10);
  --shadow-hover:0 16px 36px -12px rgba(16,27,51,.18);
  --focus-ring:0 0 0 3px rgba(31,85,214,.35);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:96px;
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary-600);text-decoration:none;transition:color .18s ease,background-color .18s ease}
a:hover{color:var(--primary-700)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{color:var(--ink-900);font-weight:700;line-height:1.3;margin:0}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:800px;margin-bottom:40px}
.section-head h2{font-size:32px;margin-bottom:14px;letter-spacing:-.01em}
.section-head p{font-size:16.5px;color:var(--ink-600);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.06em;color:var(--teal);background:rgba(18,181,166,.12);border-radius:var(--radius-chip);padding:6px 14px;margin-bottom:18px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-card)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;flex:0 0 auto}
.logo:hover{color:var(--ink-900)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--primary-600);color:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.4px;
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;
}
.logo-text{font-size:17px;letter-spacing:.01em}
.nav-tabs{
  display:flex;align-items:center;gap:4px;
  padding:4px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-chip);
}
.tab{
  height:36px;display:inline-flex;align-items:center;
  padding:0 14px;border-radius:var(--radius-chip);
  font-size:14.5px;font-weight:500;color:var(--ink-600);white-space:nowrap;
}
.tab:hover{background:var(--primary-050);color:var(--primary-700)}
.tab.is-active{
  background:var(--primary-050);color:var(--primary-700);font-weight:600;
  box-shadow:inset 0 0 0 1px var(--primary-600);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;margin:3px auto;transition:.2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.mobile-menu{
  position:fixed;inset:68px 0 0 0;z-index:55;background:#fff;
  padding:24px 20px 40px;overflow-y:auto;
  border-top:1px solid var(--line);
}
.mobile-menu[hidden]{display:none}
.mm-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}
.mm-tab{
  display:flex;align-items:center;justify-content:center;min-height:52px;
  border:1px solid var(--line);border-radius:14px;font-size:17px;color:var(--ink-900);
  background:var(--bg);text-align:center;padding:8px 12px;
}
.mm-tab.is-active{background:var(--primary-050);border-color:var(--primary-600);color:var(--primary-700);font-weight:600}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);border:1.5px solid transparent;
  font-weight:600;font-size:15px;line-height:1;
  padding:0 24px;height:44px;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary-600);color:#fff}
.btn-primary:hover{background:var(--primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-card)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:#fff;color:var(--primary-700);border-color:var(--primary-600)}
.btn-secondary:hover{background:var(--primary-050);color:var(--primary-700)}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sm{height:36px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--primary-600);font-size:15px;border-bottom:2px solid transparent;padding-bottom:2px;transition:.2s}
.link-more:hover{border-bottom-color:var(--primary-600);color:var(--primary-700)}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:44px 0 64px;
  min-height:320px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.90)}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-400);margin-bottom:22px}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--primary-600)}
.breadcrumb span.sep{color:var(--line)}
.breadcrumb .current{color:var(--ink-600)}
.page-hero h1{
  font-size:44px;line-height:1.26;letter-spacing:-.02em;max-width:880px;margin-bottom:20px;
}
.page-hero .lede{font-size:17.5px;line-height:1.85;color:var(--ink-600);max-width:760px;margin-bottom:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:36px}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{
  font-size:28px;font-weight:700;color:var(--primary-700);
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;line-height:1.2;
}
.hero-stats span{font-size:12.5px;color:var(--ink-400);margin-top:4px}

/* ============ 时间轴 ============ */
.timeline-wrap{max-width:920px}
.timeline{position:relative;padding-left:44px}
.timeline::before{content:"";position:absolute;left:15px;top:14px;bottom:14px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-35px;top:30px;width:12px;height:12px;border-radius:50%;
  background:var(--primary-600);box-shadow:0 0 0 4px #fff;
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:28px;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.tl-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px}
.tl-num{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-chip);
  background:var(--primary-050);color:var(--primary-700);font-size:12.5px;font-weight:600;
}
.tl-card h3{font-size:22px;margin:0}
.tl-card > p{color:var(--ink-600);margin:0 0 14px}
.tl-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--ink-600);line-height:1.9;
}
.tl-list li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--primary-600);
}

/* ============ 图文预览 ============ */
.split{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.media-frame{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:#fff;
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-caption{font-size:12.5px;color:var(--ink-400);margin-top:12px}
.point-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.point-list li:last-child{border-bottom:0}
.point-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--primary-050);
  color:var(--primary-700);display:grid;place-items:center;font-size:13px;font-weight:700;margin-top:4px;
}
.point-list h3{font-size:17px;margin-bottom:4px}
.point-list p{font-size:14.8px;margin:0}

/* ============ 对照表 ============ */
.table-shell{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.cmp-table{width:100%;border-collapse:collapse}
.cmp-table caption{text-align:left;padding:20px 24px 0;font-size:14px;color:var(--ink-400)}
.cmp-table th{
  background:var(--primary-050);color:var(--primary-700);font-size:14.5px;font-weight:600;
  text-align:left;padding:16px 24px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.cmp-table td{
  padding:18px 24px;font-size:15px;border-bottom:1px solid var(--line);vertical-align:top;
}
.cmp-table tbody tr:nth-child(even){background:#F7FAFF}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table td:first-child{color:var(--ink-900);font-weight:600}
.table-note{margin-top:16px;font-size:14px;color:var(--ink-400)}

/* ============ 编号卡 ============ */
.num-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.num-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:28px 28px 28px 32px;overflow:hidden;
  transition:box-shadow .22s ease,transform .22s ease;
}
.num-card::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
  background:var(--primary-600);opacity:0;transition:opacity .2s ease;
}
.num-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.num-card:hover::before{opacity:1}
.num-badge{
  width:44px;height:44px;border-radius:12px;background:var(--primary-050);color:var(--primary-700);
  display:grid;place-items:center;font-size:22px;font-weight:700;margin-bottom:16px;
  font-family:Inter,"DIN Alternate",system-ui,sans-serif;
}
.num-card h3{font-size:18px;margin-bottom:10px}
.num-card p{font-size:15px;margin:0}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .2s ease;
}
.faq-item[open]{box-shadow:var(--shadow-card)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink-900);cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:24px;line-height:1;color:var(--ink-400);flex:0 0 auto;transition:color .2s ease;
}
.faq-item[open] summary::after{content:"−";color:var(--primary-600)}
.faq-answer{
  padding:16px 24px 22px;border-top:1px dashed var(--line);
  font-size:15.5px;line-height:1.85;color:var(--ink-600);
}

/* ============ 继续了解 ============ */
.next-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.next-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);padding:26px;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.next-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--primary-050)}
.next-card .chip{font-size:12.5px;color:var(--teal);background:rgba(18,181,166,.12);border-radius:var(--radius-chip);padding:4px 12px;align-self:flex-start;font-weight:600}
.next-card h3{font-size:18px}
.next-card p{font-size:14.8px;margin:0;color:var(--ink-600)}
.next-card .go{font-size:14.5px;font-weight:600;color:var(--primary-600);margin-top:6px}

/* ============ CTA ============ */
.cta-band{
  background:var(--primary-050);border:1px solid var(--line);border-radius:20px;
  padding:64px 40px;text-align:center;
}
.cta-band h2{font-size:30px;margin-bottom:14px}
.cta-band p{max-width:620px;margin:0 auto 28px;color:var(--ink-600)}
.cta-band .btn-row{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-mark{background:var(--primary-600)}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:400px;margin-bottom:18px}
.footer-brand .contact{font-size:13.5px;color:rgba(255,255,255,.6);line-height:2}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{color:rgba(255,255,255,.72);font-size:14.5px;display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-col ul a:hover{color:#A8C0FF;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#A8C0FF}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:960px}
  .page-hero h1{font-size:38px}
}
@media (max-width:991px){
  .nav-tabs{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:grid}
  .split{grid-template-columns:1fr;gap:28px}
  .num-grid{grid-template-columns:1fr}
  .next-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:72px 0}
  .page-hero h1{font-size:34px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .page-hero{min-height:220px;padding:32px 0 48px}
  .page-hero h1{font-size:28px;margin-bottom:16px}
  .page-hero .lede{font-size:16px}
  .hero-stats{gap:28px}
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:25px}
  .faq-grid{grid-template-columns:1fr}
  .next-grid{grid-template-columns:1fr}
  .tl-card,.num-card{padding:22px}
  .cta-band{padding:44px 22px}
  .cta-band h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .site-footer{margin-top:64px;padding-top:56px}
  .timeline{padding-left:32px}
  .timeline::before{left:11px}
  .tl-dot{left:-27px}
  .cmp-table thead{display:none}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%}
  .cmp-table tr{border-bottom:1px solid var(--line);padding:16px 20px}
  .cmp-table tbody tr:last-child{border-bottom:0}
  .cmp-table td{border:0;padding:6px 0}
  .cmp-table td::before{
    content:attr(data-label);display:block;font-size:12.5px;font-weight:600;color:var(--ink-400);margin-bottom:2px;
  }
  .cmp-table caption{padding:16px 20px 0}
}
@media (max-width:400px){
  .page-hero h1{font-size:26px}
  .hero-stats strong{font-size:24px}
  .mm-grid{grid-template-columns:1fr}
}