/* roulang page: index */
:root{
  --brand:#103B2F;
  --brand-deep:#0A2A21;
  --brand-soft:#1B5142;
  --accent:#FF5B23;
  --accent-strong:#D93F0B;
  --teal:#2FBFA6;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#F2EFE7;
  --line:#E3DFD5;
  --ink:#17201C;
  --ink-2:#5A6560;
  --ink-3:#8C948F;
  --star:#FFB020;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-block:18px;
  --shadow-card:0 1px 2px rgba(16,59,47,.06);
  --shadow-hover:0 10px 28px rgba(16,59,47,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid rgba(255,91,35,.35);outline-offset:2px;border-radius:6px}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
table{border-collapse:collapse}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--brand-deep);color:rgba(255,255,255,.78);font-size:13px;line-height:1.6;padding:8px 0}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:20px}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.5px}
.topbar-notes{display:flex;gap:22px;color:rgba(255,255,255,.66)}
.topbar-actions{display:flex;align-items:center;gap:14px}
.topbar-link{color:var(--teal)}
.topbar-link:hover{color:#fff}
@media (max-width:767px){
  .topbar-notes,.topbar-link{display:none}
}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:15px;
  padding:12px 22px;border:1.5px solid transparent;line-height:1.3;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  cursor:pointer;text-align:center;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-strong);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:var(--accent-strong)}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-ghost:hover{background:var(--brand);color:#fff}
.btn-ghost:active{background:var(--brand-deep);color:#fff}
.btn-white-ghost{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-white-ghost:hover{background:#fff;color:var(--brand-deep);border-color:#fff}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-xs{padding:5px 12px;font-size:12.5px;border-radius:8px}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
}
.link-more:hover{color:var(--accent);border-bottom-color:var(--accent)}
.link-more svg{transition:transform .2s ease}
.link-more:hover svg{transform:translateX(3px)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(16,59,47,.12)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);
  display:grid;place-items:center;color:#fff;flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text .l1{font-size:16px;font-weight:800;color:var(--brand);letter-spacing:.5px}
.logo-text .l2{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:3px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:transparent;transition:background-color .2s ease;
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{background:var(--brand)}
.nav-links a.active{color:var(--brand);font-weight:700}
.nav-links a.active::after{background:var(--accent)}
.nav-links a.active::before{
  content:"";position:absolute;right:-10px;top:1px;width:6px;height:6px;border-radius:50%;background:var(--teal);
}
.nav-actions{display:flex;align-items:center;gap:18px;flex-shrink:0}
.nav-link-text{font-size:14.5px;font-weight:600;color:var(--brand);border-bottom:2px solid transparent;padding-bottom:2px}
.nav-link-text:hover{color:var(--accent);border-bottom-color:var(--accent)}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;
  align-items:center;justify-content:center;color:var(--brand);
}
@media (max-width:1023px){
  .nav-links,.nav-actions .nav-link-text{display:none}
  .nav-toggle{display:inline-flex}
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,42,33,.55);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:302px;max-width:86vw;background:#fff;z-index:100;
  transform:translateX(100%);transition:transform .3s ease;padding:22px 22px 32px;overflow-y:auto;
  box-shadow:-10px 0 30px rgba(10,42,33,.18);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:24px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--surface-2);
  color:var(--brand);font-size:20px;line-height:1;display:grid;place-items:center;
}
.drawer-close:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.drawer-nav a{
  font-size:15.5px;color:var(--ink);padding:12px 12px;border-radius:10px;font-weight:500;
}
.drawer-nav a:hover{background:var(--surface-2);color:var(--brand)}
.drawer-nav a.active{background:var(--brand);color:#fff;font-weight:700}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:52px 0 64px}
@media (min-width:1024px){.hero{padding:80px 0 96px}}
.hero::before{
  content:"";position:absolute;top:-140px;right:-160px;width:540px;height:540px;border-radius:50%;
  background:rgba(47,191,166,.10);
}
.hero::after{
  content:"";position:absolute;left:-160px;bottom:-180px;width:440px;height:440px;border-radius:50%;
  background:rgba(16,59,47,.07);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 5fr;gap:56px}}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px;box-shadow:var(--shadow-card);
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block}
.hero-title{font-size:28px;line-height:1.35;font-weight:800;letter-spacing:-.4px;margin-top:18px;color:var(--ink)}
@media (min-width:1024px){.hero-title{font-size:40px;line-height:1.3}}
.hero-sub{font-size:16px;color:var(--ink-2);margin-top:16px;max-width:560px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:20px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2)}
.hero-points li svg{color:var(--teal);flex-shrink:0}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px 40px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.stat-num{font-size:24px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3}
.stat-label{font-size:12px;color:var(--ink-3);line-height:1.6}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:16px}
.hero-float{
  position:absolute;right:14px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-hover);padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.hero-float .dot{width:9px;height:9px;border-radius:50%;background:var(--teal);flex-shrink:0}
.hero-float-t{font-size:14px;font-weight:700;color:var(--brand);line-height:1.4}
.hero-float-s{font-size:12px;color:var(--ink-3);line-height:1.4}

/* ============ 板块 ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--surface-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.section-title{position:relative;padding-left:15px;font-size:22px;font-weight:700;line-height:1.4;color:var(--ink)}
.section-title::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--brand);
}
@media (min-width:1024px){.section-title{font-size:30px}}
.section-desc{font-size:15px;color:var(--ink-2);max-width:780px;margin-top:14px}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D9D3C6}
.card-media{position:relative;display:block;overflow:hidden;border-radius:var(--radius-img);margin:0;background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media-16-10{aspect-ratio:16/10}
.card-media-16-9{aspect-ratio:16/9}
.card-media .badge{position:absolute;left:12px;top:12px;z-index:2}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink)}
.card-desc{font-size:14px;color:var(--ink-2);line-height:1.7}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);margin-top:auto;padding-top:4px}
.card .btn{margin-top:6px}
.badge{
  display:inline-flex;align-items:center;border-radius:999px;font-size:12px;font-weight:600;
  padding:3px 10px;line-height:1.5;letter-spacing:.5px;
}
.badge-accent{background:var(--accent);color:#fff}
.badge-teal{background:var(--teal);color:#fff}
.badge-outline{border:1px solid var(--teal);color:var(--brand);background:#fff}
.badge-ghost{border:1px solid var(--line);color:var(--ink-2);background:var(--surface-2)}

/* ============ 主推网格 ============ */
.deal-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.deal-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.deal-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.deal-feature{grid-column:span 1}
@media (min-width:768px){.deal-feature{grid-column:span 2}}
@media (min-width:1024px){.deal-feature{grid-column:span 2}}
.deal-feature .card-media{aspect-ratio:16/9}
.deal-feature .card-title{font-size:20px}
@media (min-width:1024px){.deal-feature .card-title{font-size:22px}}
.deal-feature .card-body{padding:22px}
.feature-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.feature-list li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:var(--ink-2)}
.feature-list li svg{color:var(--teal);flex-shrink:0;margin-top:5px}
.deal-feature .btn{margin-top:14px}

/* ============ 评价轮播 ============ */
.review-wrap{position:relative}
.review-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;-ms-overflow-style:none;
}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:20px;
  display:flex;flex-direction:column;gap:12px;
}
@media (min-width:768px){.review-card{flex:0 0 340px}}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:16px;font-weight:700;flex-shrink:0;
}
.review-name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.4}
.review-role{font-size:12.5px;color:var(--ink-3);line-height:1.4}
.stars{display:flex;gap:3px;color:var(--star)}
.review-text{font-size:14.5px;line-height:1.75;color:var(--ink-2)}
.review-time{font-size:12.5px;color:var(--ink-3);margin-top:auto}
.review-nav{display:none;gap:10px}
@media (min-width:1024px){.review-nav{display:flex}}
.review-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);
  display:grid;place-items:center;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.review-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.review-bar{display:flex;gap:6px;margin-top:6px}
.review-bar span{height:3px;width:26px;border-radius:2px;background:var(--line)}
.review-bar span.on{background:var(--brand)}

/* ============ 保障条 ============ */
.guarantee{background:var(--brand);color:#fff;padding:40px 0}
@media (min-width:1024px){.guarantee{padding:52px 0}}
.guarantee-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px 20px}
@media (min-width:1024px){.guarantee-grid{grid-template-columns:repeat(4,1fr);gap:0}}
.guarantee-item{display:flex;flex-direction:column;gap:8px}
@media (min-width:1024px){
  .guarantee-item{padding:0 24px}
  .guarantee-item:first-child{padding-left:0}
  .guarantee-item + .guarantee-item{border-left:1px solid rgba(255,255,255,.14)}
}
.guarantee-item svg{color:var(--teal)}
.guarantee-t{font-size:16px;font-weight:700;color:#fff}
.guarantee-s{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.7}
@media (max-width:1023px){
  .guarantee-item{border-left:0 !important;padding:0 !important}
}

/* ============ 最新信息（CMS） ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.news-card .card-media{border-radius:0;margin:-1px -1px 0}
.news-card .card-body{padding:18px 18px 20px}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);margin-top:auto}
.news-foot svg{color:var(--brand);transition:transform .2s ease}
.news-card:hover .news-foot svg{transform:translateX(3px)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:48px 20px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--surface);text-align:center;
}
.empty-state svg{color:var(--ink-3)}
.empty-state p{font-size:14px;color:var(--ink-2)}
.more-wrap{display:flex;justify-content:center;margin-top:32px}

/* ============ FAQ ============ */
.faq-list{max-width:820px}
@media (min-width:768px){
  .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;max-width:none}
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;padding:18px 2px;display:flex;align-items:flex-start;justify-content:space-between;
  gap:16px;font-size:15.5px;font-weight:600;color:var(--ink);text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex-shrink:0;color:var(--brand);transition:transform .25s ease;margin-top:2px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;font-size:15px;color:var(--ink-2)}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{margin:0 0 18px;line-height:1.85}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-deep);border-radius:var(--radius-block);padding:32px 24px;
  display:flex;flex-direction:column;gap:24px;
}
@media (min-width:1024px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:48px 52px;gap:40px}
}
.cta-band h2{font-size:22px;font-weight:700;color:#fff;line-height:1.4}
@media (min-width:1024px){.cta-band h2{font-size:28px}}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.72);margin-top:10px;line-height:1.75;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px;flex-shrink:0}
@media (min-width:520px){.cta-actions{flex-direction:row}}
@media (max-width:767px){.cta-actions .btn{width:100%}}

/* ============ 表单（登录入口区） ============ */
.login-panel{
  display:grid;grid-template-columns:1fr;gap:32px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-block);padding:26px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.login-panel{grid-template-columns:1fr 1fr;gap:48px;padding:44px}}
.login-panel h2{font-size:22px;font-weight:700;line-height:1.4}
@media (min-width:1024px){.login-panel h2{font-size:28px}}
.login-panel .lead{font-size:15px;color:var(--ink-2);margin-top:14px}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.form-grid{grid-template-columns:1fr 1fr}}
.form-field{display:flex;flex-direction:column;gap:7px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:14px;font-weight:600;color:var(--ink)}
.form-field input,.form-field select{
  height:46px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;
  padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input:focus,.form-field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,191,166,.25);
}
.form-field .err{font-size:13px;color:var(--accent)}
.form-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:4px}
@media (max-width:767px){.form-actions{flex-direction:column}.form-actions .btn{width:100%}}
.form-tip{font-size:13px;color:var(--ink-3);line-height:1.7}

/* ============ 页脚 ============ */
.footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;line-height:1.5}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer a{color:rgba(255,255,255,.72);font-size:14px}
.footer a:hover{color:var(--teal)}
.footer-brand .logo-text .l1{color:#fff}
.footer-brand .logo-text .l2{color:var(--teal)}
.footer-brand .logo-mark{background:#fff;color:var(--brand-deep)}
.footer-desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.65);margin-top:16px;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social span{
  width:34px;height:34px;border-radius:9px;border:1px solid rgba(255,255,255,.2);
  display:grid;place-items:center;color:rgba(255,255,255,.8);
}
.footer-social span:hover{border-color:var(--teal);color:var(--teal)}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
}
.footer-bottom .to-top{
  display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.24);
  border-radius:999px;padding:6px 14px;color:rgba(255,255,255,.85);font-size:12.5px;
}
.footer-bottom .to-top:hover{background:var(--teal);border-color:var(--teal);color:#0A2A21}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .4s ease,transform .4s ease}
.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --brand:#103B2F;
  --brand-deep:#0A2A21;
  --accent:#FF5B23;
  --accent-strong:#D93F0B;
  --teal:#2FBFA6;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#F2EFE7;
  --line:#E3DFD5;
  --ink:#17201C;
  --ink-2:#5A6560;
  --ink-3:#8C948F;
  --star:#FFB020;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-lg:18px;
  --shadow-card:0 1px 2px rgba(16,59,47,.06);
  --shadow-hover:0 10px 28px rgba(16,59,47,.12);
  --container:1200px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible{outline:3px solid rgba(255,91,35,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-deep);color:rgba(255,255,255,.75);font-size:13px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:4px;padding-bottom:4px}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.03em}
.topbar-mid{color:rgba(255,255,255,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:14px}
.topbar-link{color:rgba(255,255,255,.82);font-size:13px}
.topbar-link:hover{color:var(--teal)}
.btn-xs{padding:4px 12px;font-size:13px;border-radius:8px}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 4px 16px rgba(16,59,47,.1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease}
.site-header.scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:var(--teal);display:grid;place-items:center;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text .l1{font-size:16px;font-weight:800;color:var(--brand);letter-spacing:.02em}
.logo-text .l2{font-size:12px;color:var(--ink-2);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;color:var(--ink);padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{background:var(--accent);transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:18px}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--brand);align-items:center;justify-content:center;cursor:pointer}
.menu-toggle:hover{border-color:var(--brand)}

/* ---------- 按钮体系 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;border-radius:var(--radius-btn);padding:12px 22px;border:1.5px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-strong);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand);color:#fff}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--brand);border-color:#fff}
.btn-full{width:100%}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none}
.link-btn{color:var(--brand);font-weight:600;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.link-btn:hover{color:var(--accent)}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--ink-3);line-height:1.7}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{margin:0 8px;color:var(--line)}
.crumb .cur{color:var(--ink)}

/* ---------- 文章头 ---------- */
.article-head{padding:26px 0 0;max-width:880px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.6;border:1px solid var(--teal);color:#1D8C78;background:rgba(47,191,166,.09)}
.article-head h1{font-size:40px;line-height:1.3;font-weight:800;letter-spacing:-.01em;margin:16px 0 0}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin-top:18px;color:var(--ink-3);font-size:13.5px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);flex:none}
.article-cover{margin:26px 0 0;border-radius:var(--radius-img);overflow:hidden;background:var(--surface-2);border:1px solid var(--line)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-figcap{font-size:13px;color:var(--ink-3);margin-top:10px}

/* ---------- 阅读布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:34px 0 0}
.article-body{max-width:780px;min-width:0}
.article-body p{margin:0 0 1.2em;font-size:16px;line-height:1.9;color:var(--ink)}
.article-body h2{font-size:24px;line-height:1.4;font-weight:700;color:var(--brand);margin:36px 0 16px;padding-top:20px;border-top:1px solid var(--line)}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--ink);margin:26px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:20px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;color:var(--ink)}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0;line-height:1.85}
.article-body blockquote{margin:22px 0;padding:16px 20px;border-left:3px solid var(--brand);background:var(--surface-2);border-radius:0 10px 10px 0;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:10px;margin:18px 0;width:100%;object-fit:cover}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;margin:20px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{background:var(--surface-2);font-weight:600}
.article-body code{background:var(--surface-2);border-radius:6px;padding:2px 6px;font-size:14px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:28px 0}

/* ---------- 空态 ---------- */
.empty-state{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center}
.empty-state svg{color:var(--brand);opacity:.7;margin:0 auto}
.empty-state p{margin:14px 0 20px;color:var(--ink-2);font-size:15px}

/* ---------- 侧栏 ---------- */
.side{display:none}
.side-inner{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;box-shadow:var(--shadow-card)}
.side-card h3{font-size:16px;font-weight:700;line-height:1.4;padding-left:10px;border-left:4px solid var(--brand);margin-bottom:14px}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{font-size:14px;color:var(--ink-2);padding:8px 0;border-bottom:1px dashed var(--line)}
.side-links a:last-child{border-bottom:none}
.side-links a:hover{color:var(--accent);padding-left:4px}
.side-card--dark{background:var(--brand);border-color:var(--brand);color:rgba(255,255,255,.82)}
.side-card--dark h3{color:#fff;border-left-color:var(--teal)}
.side-card--dark p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.78);margin-bottom:16px}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:48px}
  .side{display:block}
}

/* ---------- 标签与分享 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.tag{display:inline-flex;align-items:center;padding:5px 13px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--ink-2);background:var(--surface)}
.tag:hover{border-color:var(--brand);color:var(--brand)}
.share-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
.share-btn{width:34px;height:34px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:.2s}
.share-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}

/* ---------- 上下篇 ---------- */
.pager{display:grid;gap:16px;margin-top:42px}
.pager a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 20px;box-shadow:var(--shadow-card);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease}
.pager a:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);color:var(--ink)}
.pager .pager-label{font-size:13px;color:var(--ink-3);display:block;margin-bottom:6px}
.pager .pager-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;display:block}
.pager a:hover .pager-title{color:var(--brand)}
@media(min-width:768px){.pager{grid-template-columns:1fr 1fr}}

/* ---------- 相关推荐 ---------- */
.section{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;padding-left:12px;border-left:4px solid var(--brand)}
.section-head .more{font-size:14px;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px}
.section-head .more:hover{color:var(--accent)}
.rel-grid{display:grid;gap:20px}
@media(min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.card-thumb{position:relative;overflow:hidden;background:var(--surface-2);aspect-ratio:16/10}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:18px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:18px;line-height:1.45;font-weight:600;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;line-height:1.7;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);display:flex;align-items:center;justify-content:space-between}
.tag-mini{display:inline-flex;padding:3px 10px;border-radius:999px;border:1px solid var(--teal);color:#1D8C78;font-size:12px;line-height:1.6}

/* ---------- CTA ---------- */
.cta-band{margin-top:72px}
.cta-inner{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);border-radius:var(--radius-lg);padding:36px 28px;display:flex;flex-direction:column;gap:22px}
.cta-inner h2{color:#fff;font-size:26px;line-height:1.4;font-weight:700;border:none;padding:0}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;line-height:1.8;margin-top:8px;max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:12px}
@media(min-width:900px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:40px 44px}
  .cta-actions{flex-direction:row;gap:14px;flex:none}
}

/* ---------- 页脚 ---------- */
.footer{background:var(--brand-deep);color:rgba(255,255,255,.72);margin-top:88px;padding-top:56px;font-size:14px}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer .logo-text .l1{color:#fff}
.footer .logo-text .l2{color:rgba(255,255,255,.6)}
.footer .logo-mark{background:rgba(255,255,255,.08);color:var(--teal)}
.footer-desc{margin-top:16px;line-height:1.8;color:rgba(255,255,255,.68);max-width:340px}
.footer-social{display:flex;gap:12px;margin-top:18px}
.footer-social span{width:34px;height:34px;border-radius:10px;border:1px solid rgba(255,255,255,.16);display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.72);transition:.2s}
.footer-social span:hover{border-color:var(--teal);color:var(--teal)}
.footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.68);line-height:1.7}
.footer-links a:hover{color:var(--teal)}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:18px 0 24px;display:flex;flex-direction:column;gap:12px;font-size:13px;color:rgba(255,255,255,.58)}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-bottom-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.to-top{border:1px solid rgba(255,255,255,.2);background:transparent;color:rgba(255,255,255,.72);font-size:13px;padding:6px 14px;border-radius:8px;cursor:pointer;transition:.2s}
.to-top:hover{border-color:var(--teal);color:var(--teal)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(10,42,33,.55);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:80}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:#fff;z-index:90;transform:translateX(100%);transition:transform .3s ease;padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:6px}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--brand);cursor:pointer}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{padding:14px 4px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer nav a.active{color:var(--accent);font-weight:600}
.drawer-cta{margin-top:20px;display:flex;flex-direction:column;gap:12px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .4s ease,transform .4s ease}
.reveal.visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

@media(max-width:1023px){
  .nav-links,.nav-actions{display:none}
  .menu-toggle{display:inline-flex}
}
@media(max-width:767px){
  .topbar-mid{display:none}
  .article-head h1{font-size:28px}
  .section-head h2{font-size:22px}
  .cta-inner h2{font-size:22px}
  .footer{margin-top:56px;padding-top:40px}
}
@media(min-width:768px) and (max-width:1023px){
  .article-head h1{font-size:32px}
}

/* roulang page: category1 */
:root{
    --brand:#103B2F;
    --brand-deep:#0A2A21;
    --accent:#FF5B23;
    --accent-strong:#D93F0B;
    --teal:#2FBFA6;
    --bg:#F7F5F0;
    --surface:#FFFFFF;
    --surface-2:#F2EFE7;
    --line:#E3DFD5;
    --ink:#17201C;
    --ink-2:#5A6560;
    --ink-3:#8C948F;
    --star:#FFB020;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --r-block:18px;
    --sh-card:0 1px 2px rgba(16,59,47,.06);
    --sh-hover:0 10px 28px rgba(16,59,47,.12);
    --gap:24px;
  }

  *,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
  ul,ol{padding:0;list-style:none}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease}
  a:hover{color:var(--accent)}
  a:focus-visible{outline:3px solid rgba(47,191,166,.45);outline-offset:2px;border-radius:6px}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  :focus-visible{outline:3px solid rgba(255,91,35,.35);outline-offset:2px}
  .num{font-variant-numeric:tabular-nums}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 16px;
  }

  /* ============ 顶部信息条 ============ */
  .topbar{
    background:var(--brand-deep);
    color:rgba(255,255,255,.8);
    font-size:13px;
    line-height:1.6;
  }
  .topbar .container{
    min-height:36px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
  }
  .topbar-left{display:flex;align-items:center;gap:18px;min-width:0}
  .topbar-domain{
    color:#fff;
    font-weight:600;
    letter-spacing:.03em;
    white-space:nowrap;
  }
  .topbar-note{display:flex;gap:18px;color:rgba(255,255,255,.66);white-space:nowrap}
  .topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
  .topbar-link{color:rgba(255,255,255,.85);font-size:13px}
  .topbar-link:hover{color:var(--teal)}
  .topbar-btn{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--accent);color:#fff;
    font-size:13px;font-weight:600;
    padding:4px 12px;border-radius:999px;
    transition:background .2s ease;
  }
  .topbar-btn:hover{background:var(--accent-strong);color:#fff}

  /* ============ 主导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 4px 16px rgba(16,59,47,.12)}
  .nav-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:20px;height:72px;transition:height .25s ease;
  }
  .site-header.is-scrolled .nav-inner{height:60px}

  .logo{display:flex;align-items:center;gap:10px;flex:none}
  .logo-mark{
    width:32px;height:32px;border-radius:10px;flex:none;
    background:var(--brand);color:#fff;
    display:grid;place-items:center;
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-text .l1{font-size:16px;font-weight:800;color:var(--brand);letter-spacing:.01em}
  .logo-text .l2{font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.16em}
  a.logo:hover .logo-text .l1{color:var(--accent)}

  .nav-links{display:flex;align-items:center;gap:28px}
  .nav-links a{
    position:relative;
    font-size:15px;
    color:var(--ink);
    padding:4px 0;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-links a:hover{color:var(--brand)}
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-links a.active{color:var(--brand);font-weight:600}
  .nav-links a.active::after{background:var(--accent);transform:scaleX(1)}
  .nav-links a.active::before{
    content:"";position:absolute;top:50%;right:-10px;
    width:6px;height:6px;border-radius:50%;
    background:var(--teal);transform:translateY(-50%);
  }

  .nav-actions{display:flex;align-items:center;gap:16px;flex:none}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:10px;
    border:1px solid var(--line);background:var(--surface);
    color:var(--brand);align-items:center;justify-content:center;
  }
  .nav-toggle:hover{border-color:var(--brand)}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1;
    padding:12px 22px;border-radius:var(--r-btn);
    border:1.5px solid transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .18s ease,box-shadow .2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-strong);color:#fff;transform:translateY(-1px)}
  .btn-primary:active{background:var(--accent-strong);transform:translateY(0)}
  .btn-primary:focus-visible{outline:3px solid rgba(255,91,35,.35);outline-offset:2px}

  .btn-outline{
    background:transparent;color:var(--brand);border-color:var(--brand);
  }
  .btn-outline:hover{background:var(--brand);color:#fff;transform:translateY(-1px)}
  .btn-outline:active{transform:translateY(0)}

  .btn-ghost-light{
    background:transparent;color:#fff;border-color:rgba(255,255,255,.55);
  }
  .btn-ghost-light:hover{background:#fff;color:var(--brand-deep);border-color:#fff;transform:translateY(-1px)}

  .btn-sm{padding:9px 16px;font-size:14px}
  .btn-block{width:100%}
  .btn[disabled]{opacity:.45;pointer-events:none}

  .link-text{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--brand);
    border-bottom:2px solid transparent;padding-bottom:2px;
    text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;
  }
  .link-text:hover{color:var(--accent)}

  /* ============ 面包屑 ============ */
  .breadcrumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--ink-3);
    padding:20px 0 0;
  }
  .breadcrumb a{color:var(--ink-3)}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:var(--line)}
  .breadcrumb .current{color:var(--ink)}

  /* ============ 页面头 ============ */
  .page-head{padding:8px 0 40px;background:var(--bg)}
  .page-head-inner{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:32px;flex-wrap:wrap;margin-top:18px;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--brand);
    letter-spacing:.06em;margin-bottom:14px;
  }
  .eyebrow::before{
    content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);
  }
  h1{
    font-size:40px;line-height:1.3;font-weight:800;
    letter-spacing:-.01em;color:var(--brand-deep);
    max-width:760px;
  }
  .lead{
    margin-top:16px;font-size:16px;color:var(--ink-2);
    max-width:700px;
  }
  .head-metrics{
    display:flex;gap:28px;
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);padding:18px 24px;box-shadow:var(--sh-card);
  }
  .head-metrics .m-num{
    font-size:24px;font-weight:800;color:var(--brand);line-height:1.2;
  }
  .head-metrics .m-label{font-size:12px;color:var(--ink-3);margin-top:2px}

  /* ============ 通用区块 ============ */
  .section{padding:64px 0}
  .section-alt{background:var(--surface-2)}
  .section-white{background:var(--surface)}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:24px;flex-wrap:wrap;margin-bottom:32px;
  }
  h2{
    font-size:30px;line-height:1.35;font-weight:700;
    color:var(--brand-deep);position:relative;padding-bottom:14px;
  }
  h2::after{
    content:"";position:absolute;left:0;bottom:0;
    width:60px;height:3px;border-radius:2px;background:var(--accent);
  }
  .section-sub{margin-top:14px;font-size:15px;color:var(--ink-2);max-width:720px}
  h3{font-size:18px;line-height:1.45;font-weight:600;color:var(--brand-deep)}

  /* ============ Hero 左文右图 ============ */
  .hero{padding:0 0 8px;background:var(--bg)}
  .hero-grid{
    display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-block);
    padding:40px;
    box-shadow:var(--sh-card);
    position:relative;overflow:hidden;
  }
  .hero-grid::before{
    content:"";position:absolute;right:-120px;top:-140px;
    width:360px;height:360px;border-radius:50%;
    background:rgba(47,191,166,.10);pointer-events:none;
  }
  .hero-copy{position:relative;z-index:1}
  .hero-title{font-size:26px;line-height:1.4;font-weight:700;color:var(--brand-deep)}
  .hero-text{margin-top:14px;color:var(--ink-2);font-size:16px}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:20px}
  .hero-points li{
    display:flex;align-items:center;gap:8px;
    font-size:14px;color:var(--ink);
  }
  .hero-points li i{color:var(--teal);font-size:14px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
  .hero-media{position:relative}
  .media{
    position:relative;overflow:hidden;border-radius:var(--r-img);
    background:var(--surface-2);
  }
  .media img{width:100%;height:100%;object-fit:cover}
  .ratio-16-11{aspect-ratio:16/11}
  .ratio-16-10{aspect-ratio:16/10}
  .ratio-16-9{aspect-ratio:16/9}
  .float-card{
    position:absolute;right:16px;bottom:16px;
    background:rgba(255,255,255,.96);
    border:1px solid var(--line);border-radius:12px;
    padding:12px 16px;box-shadow:var(--sh-hover);
    display:flex;align-items:center;gap:10px;
  }
  .dot-live{
    width:8px;height:8px;border-radius:50%;background:var(--teal);
    box-shadow:0 0 0 4px rgba(47,191,166,.18);flex:none;
  }
  .float-card b{display:block;font-size:13px;color:var(--brand-deep);line-height:1.4}
  .float-card span{font-size:12px;color:var(--ink-3)}

  /* ============ 双列大卡 ============ */
  .big-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
  .big-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-card);
    display:flex;flex-direction:column;
    transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  }
  .big-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#d6d1c4}
  .big-card .media{border-radius:0}
  .big-card:hover .media img{transform:scale(1.03)}
  .big-card .media img{transition:transform .4s ease}
  .big-card-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
  .big-card-body h3{font-size:19px}
  .badge{
    display:inline-flex;align-items:center;
    font-size:12px;font-weight:600;line-height:1;
    padding:5px 12px;border-radius:999px;
    border:1px solid transparent;letter-spacing:.04em;
  }
  .badge-accent{background:var(--accent);color:#fff}
  .badge-teal{background:var(--teal);color:#fff}
  .badge-outline{background:transparent;color:var(--brand);border-color:var(--teal)}
  .badge-row{display:flex;gap:8px;flex-wrap:wrap}

  .dot-list{display:flex;flex-direction:column;gap:10px}
  .dot-list li{
    display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7;
  }
  .dot-list li::before{
    content:"";flex:none;width:6px;height:6px;border-radius:50%;
    background:var(--teal);margin-top:9px;
  }
  .big-card-body .btn{margin-top:auto}

  /* ============ 图文说明 ============ */
  .split{
    display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  }
  .split.reverse .split-media{order:2}
  .split-body p{color:var(--ink-2);margin-top:14px}
  .check-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
  .check-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:18px;
    box-shadow:var(--sh-card);
    transition:box-shadow .25s ease,transform .25s ease;
  }
  .check-item:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
  .check-item i{color:var(--brand);font-size:18px}
  .check-item h4{font-size:15px;font-weight:600;color:var(--brand-deep);margin-top:10px}
  .check-item p{font-size:13px;color:var(--ink-2);margin-top:6px;line-height:1.7}

  /* ============ FAQ ============ */
  .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;max-width:1040px}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;
    gap:16px;text-align:left;
    padding:20px 0;font-size:16px;font-weight:600;color:var(--brand-deep);
  }
  .faq-q:hover{color:var(--accent)}
  .faq-q .icon{
    flex:none;width:24px;height:24px;border-radius:50%;
    border:1px solid var(--line);display:grid;place-items:center;
    color:var(--brand);font-size:12px;
    transition:transform .25s ease,background .2s ease,color .2s ease;
  }
  .faq-item.open .faq-q .icon{
    transform:rotate(45deg);background:var(--brand);color:#fff;border-color:var(--brand);
  }
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .3s ease;
  }
  .faq-a p{
    font-size:15px;color:var(--ink-2);line-height:1.85;
    padding:0 0 20px;max-width:820px;
  }

  /* ============ 相关分类卡 ============ */
  .cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
  .cat-card{
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;
    box-shadow:var(--sh-card);display:flex;flex-direction:column;
    transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  }
  .cat-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#d6d1c4}
  .cat-card .media{border-radius:0}
  .cat-card .media img{transition:transform .4s ease}
  .cat-card:hover .media img{transform:scale(1.03)}
  .cat-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .cat-card-body p{font-size:14px;color:var(--ink-2);line-height:1.75}
  .cat-card-body .link-text{margin-top:auto;font-size:13px}

  /* ============ CTA 条 ============ */
  .cta-band{
    background:var(--brand-deep);
    border-radius:var(--r-block);
    padding:44px 40px;
    display:flex;align-items:center;justify-content:space-between;
    gap:32px;flex-wrap:wrap;
    position:relative;overflow:hidden;
  }
  .cta-band::after{
    content:"";position:absolute;right:-80px;bottom:-120px;
    width:300px;height:300px;border-radius:50%;
    background:rgba(47,191,166,.12);pointer-events:none;
  }
  .cta-band h2{color:#fff;padding-bottom:0;font-size:28px}
  .cta-band h2::after{display:none}
  .cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:10px;max-width:520px}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

  /* ============ 页脚 ============ */
  .footer{
    background:var(--brand-deep);color:rgba(255,255,255,.78);
    padding:64px 0 0;margin-top:64px;
  }
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
    padding-bottom:48px;
  }
  .footer .logo-text .l1{color:#fff}
  .footer .logo-text .l2{color:var(--teal)}
  .footer .logo-mark{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18)}
  .footer-desc{
    font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);
    margin-top:18px;max-width:360px;
  }
  .footer-social{display:flex;gap:10px;margin-top:20px}
  .footer-social span{
    width:34px;height:34px;border-radius:50%;
    border:1px solid rgba(255,255,255,.22);
    display:grid;place-items:center;color:rgba(255,255,255,.75);
    transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .footer-social span:hover{background:var(--teal);color:#fff;border-color:var(--teal)}
  .footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
  .footer-links{display:flex;flex-direction:column;gap:12px}
  .footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.7)}
  .footer-links a:hover{color:var(--teal)}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0;display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);
  }
  .to-top{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:rgba(255,255,255,.75);
    border:1px solid rgba(255,255,255,.22);border-radius:999px;
    padding:7px 14px;transition:background .2s ease,color .2s ease;
  }
  .to-top:hover{background:#fff;color:var(--brand-deep)}

  /* ============ 移动抽屉 ============ */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(10,42,33,.55);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
    z-index:80;
  }
  .drawer-mask.open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:298px;max-width:86vw;
    background:var(--surface);z-index:90;
    transform:translateX(100%);transition:transform .28s ease;
    display:flex;flex-direction:column;padding:20px;
    overflow-y:auto;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
  .drawer-close{
    width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
    display:grid;place-items:center;color:var(--brand);
  }
  .drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
  .drawer-links a{
    padding:12px 14px;border-radius:10px;font-size:15px;color:var(--ink);
  }
  .drawer-links a:hover{background:var(--surface-2);color:var(--brand)}
  .drawer-links a.active{background:rgba(16,59,47,.06);color:var(--brand);font-weight:600}
  .drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:auto}

  /* ============ 动效 ============ */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .4s ease,transform .4s ease}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

  /* ============ 响应式 ============ */
  @media (min-width:768px){
    .container{padding:0 24px}
  }
  @media (min-width:1024px){
    .container{padding:0 32px}
  }

  @media (max-width:1023px){
    .nav-links,.nav-actions{display:none}
    .nav-toggle{display:flex}
    .hero-grid{grid-template-columns:1fr;gap:28px;padding:28px}
    .split{grid-template-columns:1fr;gap:28px}
    .split.reverse .split-media{order:0}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    h1{font-size:32px}
    h2{font-size:25px}
    .section{padding:56px 0}
  }

  @media (max-width:767px){
    .topbar-note{display:none}
    .topbar-right .topbar-link{display:none}
    .big-grid{grid-template-columns:1fr}
    .cat-grid{grid-template-columns:1fr}
    .faq-grid{grid-template-columns:1fr}
    .check-list{grid-template-columns:1fr}
    .head-metrics{width:100%;justify-content:space-between;gap:16px}
    .cta-band{padding:32px 22px}
    .cta-actions{width:100%;flex-direction:column}
    .cta-actions .btn{width:100%}
    .section{padding:48px 0}
    h1{font-size:28px}
    h2{font-size:22px}
    .hero-title{font-size:21px}
    .cta-band h2{font-size:22px}
    .footer{padding-top:48px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }

/* roulang page: category2 */
:root{
    --brand:#103B2F;
    --brand-deep:#0A2A21;
    --accent:#FF5B23;
    --accent-strong:#D93F0B;
    --teal:#2FBFA6;
    --bg:#F7F5F0;
    --surface:#FFFFFF;
    --surface-2:#F2EFE7;
    --line:#E3DFD5;
    --ink:#17201C;
    --ink-2:#5A6560;
    --ink-3:#8C948F;
    --star:#FFB020;
    --shadow-card:0 1px 2px rgba(16,59,47,.06);
    --shadow-hover:0 10px 28px rgba(16,59,47,.12);
    --radius-card:14px;
    --radius-btn:10px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  .num{font-variant-numeric:tabular-nums;}
  :focus-visible{outline:3px solid rgba(255,91,35,.35);outline-offset:2px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* ============ 顶部信息条 ============ */
  .topbar{background:var(--brand-deep);color:#C9D6D0;font-size:13px;height:36px;}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
  .topbar-left{display:flex;align-items:center;gap:20px;min-width:0;}
  .topbar-domain{color:#fff;font-weight:600;letter-spacing:.03em;white-space:nowrap;}
  .topbar-tips{display:flex;gap:18px;color:#9EB3AA;}
  .topbar-tips span{white-space:nowrap;}
  .topbar-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
  .topbar-link{color:#D7E3DD;transition:color .2s;}
  .topbar-link:hover{color:var(--teal);}
  @media (max-width:767px){
    .topbar-tips,.topbar-link{display:none;}
  }

  /* ============ 主导航 ============ */
  .site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
  .site-header.scrolled{box-shadow:0 4px 16px rgba(10,42,33,.12);}
  .header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease;}
  .site-header.scrolled .header-inner{height:60px;}
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
  .logo-text{display:flex;flex-direction:column;line-height:1.16;}
  .logo-text .l1{font-size:16px;font-weight:800;color:var(--brand);letter-spacing:.02em;}
  .logo-text .l2{font-size:12px;color:var(--ink-2);letter-spacing:.16em;}

  .nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
  .nav-links a{position:relative;font-size:15px;color:var(--ink);padding:6px 0;white-space:nowrap;transition:color .2s;}
  .nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
  .nav-links a:hover{color:var(--brand);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--brand);font-weight:600;}
  .nav-links a.active::after{background:var(--accent);transform:scaleX(1);}
  .nav-links a.active::before{content:"";position:absolute;right:-11px;top:5px;width:6px;height:6px;border-radius:50%;background:var(--teal);}

  .header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
  .header-textlink{font-size:15px;color:var(--brand);border-bottom:2px solid transparent;transition:color .2s,border-color .2s;}
  .header-textlink:hover{color:var(--accent);border-color:var(--accent);}

  /* 按钮体系 */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);padding:12px 22px;font-size:15px;font-weight:600;line-height:1;transition:background-color .2s,color .2s,transform .18s,box-shadow .2s,border-color .2s;}
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-strong);transform:translateY(-1px);}
  .btn-primary:active{transform:none;}
  .btn-secondary{background:transparent;border:1.5px solid var(--brand);color:var(--brand);padding:10.5px 20.5px;}
  .btn-secondary:hover{background:var(--brand);color:#fff;}
  .btn-sm{padding:8px 15px;font-size:14px;}
  .btn-block{width:100%;}
  .btn-ondark{background:transparent;border:1.5px solid rgba(255,255,255,.72);color:#fff;padding:10.5px 20.5px;}
  .btn-ondark:hover{background:#fff;color:var(--brand);border-color:#fff;}
  .btn[disabled]{opacity:.45;pointer-events:none;}

  .menu-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;align-items:center;justify-content:center;color:var(--brand);}
  .menu-toggle:hover{border-color:var(--brand);}
  @media (max-width:1023px){
    .nav-links{display:none;}
    .header-actions{display:none;}
    .menu-toggle{display:inline-flex;}
  }

  /* 抽屉 */
  .drawer-mask{position:fixed;inset:0;background:rgba(10,42,33,.55);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:80;}
  .drawer{position:fixed;top:0;right:0;bottom:0;width:308px;max-width:86vw;background:#fff;z-index:90;padding:20px;transform:translateX(102%);transition:transform .28s ease;overflow-y:auto;}
  body.drawer-open .drawer{transform:translateX(0);}
  body.drawer-open .drawer-mask{opacity:1;pointer-events:auto;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
  .drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--ink-2);}
  .drawer-close:hover{border-color:var(--brand);color:var(--brand);}
  .drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);}
  .drawer-nav a{padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);}
  .drawer-nav a:hover{color:var(--brand);}
  .drawer-nav a.active{color:var(--brand);font-weight:600;position:relative;padding-left:14px;}
  .drawer-nav a.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--accent);}
  .drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:22px;}

  /* ============ 面包屑 ============ */
  .breadcrumb{font-size:13px;color:var(--ink-3);padding-top:18px;}
  .breadcrumb a{transition:color .2s;}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{margin:0 7px;}
  .breadcrumb .current{color:var(--ink);}

  /* ============ 页面头 ============ */
  .page-head{position:relative;margin-top:18px;border-radius:18px;overflow:hidden;background:var(--brand-deep);color:#fff;}
  .page-head-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.34;}
  .page-head-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,42,33,.94) 0%,rgba(10,42,33,.78) 52%,rgba(16,59,47,.42) 100%);}
  .page-head-inner{position:relative;padding:46px 36px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;}
  .page-head h1{font-size:40px;line-height:1.3;font-weight:800;letter-spacing:.01em;}
  .page-head .lead{margin-top:16px;max-width:640px;font-size:15.5px;color:#D6E3DD;line-height:1.9;}
  .head-stats{display:flex;gap:14px;}
  .head-stat{min-width:132px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:16px 18px;}
  .head-stat .num{display:block;font-size:24px;font-weight:800;color:#fff;line-height:1.25;}
  .head-stat span:last-child{font-size:13px;color:#B9CBC3;}

  /* ============ 板块 ============ */
  .section{padding:64px 0;}
  .section-alt{background:var(--surface-2);}
  @media (min-width:1024px){.section{padding:80px 0;}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
  .section-title{display:flex;align-items:center;gap:12px;}
  .section-title::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);flex-shrink:0;}
  h2.section-h2{font-size:30px;line-height:1.35;font-weight:700;}
  .section-sub{margin-top:10px;font-size:14.5px;color:var(--ink-2);max-width:760px;}
  .link-more{font-size:14.5px;font-weight:600;color:var(--brand);border-bottom:2px solid var(--brand);padding-bottom:2px;transition:color .2s,border-color .2s;white-space:nowrap;}
  .link-more:hover{color:var(--accent);border-color:var(--accent);}

  /* ============ 筛选条 ============ */
  .filter-bar{display:flex;gap:10px;overflow-x:auto;padding:2px 2px 6px;margin-bottom:28px;scrollbar-width:none;}
  .filter-bar::-webkit-scrollbar{display:none;}
  .chip{white-space:nowrap;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 17px;font-size:14px;color:var(--ink-2);transition:border-color .2s,color .2s,background-color .2s;}
  .chip:hover{border-color:var(--brand);color:var(--brand);}
  .chip.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

  /* ============ 卡片网格 ============ */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  @media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
  @media (max-width:767px){.card-grid{grid-template-columns:1fr;gap:16px;}}

  .s-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-card);transition:box-shadow .25s ease,transform .25s ease;}
  .s-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
  .s-card-media{position:relative;aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
  .s-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .s-card:hover .s-card-media img{transform:scale(1.03);}
  .badge{position:absolute;top:12px;left:12px;border-radius:999px;padding:4px 11px;font-size:12px;font-weight:600;letter-spacing:.04em;color:#fff;background:var(--accent);}
  .badge-aqua{background:var(--teal);}
  .s-card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .s-card h3{font-size:18px;line-height:1.45;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .s-card .desc{font-size:14px;line-height:1.75;color:var(--ink-2);}
  .facts{display:flex;flex-direction:column;gap:8px;}
  .facts li{display:flex;gap:9px;font-size:13.5px;color:var(--ink-2);line-height:1.7;}
  .facts li::before{content:"";width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--teal);flex-shrink:0;}
  .s-card .btn-block{margin-top:auto;}

  /* ============ 对比表 ============ */
  .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:14px;}
  table.cmp{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px;}
  table.cmp th,table.cmp td{padding:15px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);}
  table.cmp thead th{background:var(--surface-2);color:var(--brand);font-weight:600;font-size:14px;white-space:nowrap;}
  table.cmp tbody tr:last-child td{border-bottom:0;}
  table.cmp tbody tr:hover{background:#FCFBF7;}
  table.cmp td:first-child{font-weight:600;color:var(--ink);white-space:nowrap;}
  table.cmp td span.tag{display:inline-block;font-size:12.5px;color:var(--brand);border:1px solid var(--line);border-radius:999px;padding:2px 10px;margin:0 6px 4px 0;background:#fff;}
  .table-note{margin-top:14px;font-size:13.5px;color:var(--ink-3);}

  /* ============ 相关入口 ============ */
  .related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
  @media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (max-width:767px){.related-grid{grid-template-columns:1fr;gap:14px;}}
  .r-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:10px;box-shadow:var(--shadow-card);transition:box-shadow .25s,transform .25s,border-color .25s;}
  .r-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFD8D1;}
  .r-card .r-tag{align-self:flex-start;font-size:12.5px;color:var(--brand);border:1px solid var(--line);border-radius:999px;padding:3px 11px;background:var(--surface-2);}
  .r-card h3{font-size:18px;font-weight:600;line-height:1.45;}
  .r-card p{font-size:14px;color:var(--ink-2);line-height:1.75;}
  .r-card .r-go{margin-top:auto;font-size:14px;font-weight:600;color:var(--accent);}

  /* ============ CTA ============ */
  .cta-band{background:var(--brand);border-radius:18px;padding:38px 34px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;color:#fff;}
  .cta-band h2{font-size:28px;line-height:1.4;font-weight:700;}
  .cta-band p{margin-top:12px;font-size:14.5px;color:#C8D9D1;max-width:620px;}
  .cta-actions{display:flex;gap:14px;flex-shrink:0;}
  @media (max-width:1023px){
    .cta-band{grid-template-columns:1fr;padding:30px 24px;}
    .cta-actions{flex-direction:column;}
    .cta-actions .btn{width:100%;}
  }

  /* ============ 页脚 ============ */
  .footer{background:var(--brand-deep);color:#C2D1CB;font-size:14px;margin-top:80px;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding:58px 0 42px;}
  .footer .logo-text .l1{color:#fff;}
  .footer .logo-text .l2{color:#93A8A0;}
  .footer .logo-mark{background:rgba(255,255,255,.12);}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#A9BDB5;max-width:330px;}
  .footer-social{display:flex;gap:10px;margin-top:18px;}
  .footer-social span{width:34px;height:34px;border-radius:10px;border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;color:#9FB4AC;transition:color .2s,border-color .2s;}
  .footer-social span:hover{color:var(--teal);border-color:var(--teal);}
  .footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-links{display:flex;flex-direction:column;gap:11px;}
  .footer-links a{color:#B7C8C1;transition:color .2s;}
  .footer-links a:hover{color:var(--teal);}
  .footer-note{font-size:13px;color:#7F938C;line-height:1.75;}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:#8FA39B;flex-wrap:wrap;}
  .to-top{border:1px solid rgba(255,255,255,.2);border-radius:10px;padding:7px 15px;font-size:13px;color:#D3E0DA;transition:background-color .2s,color .2s;}
  .to-top:hover{background:#fff;color:var(--brand-deep);}
  @media (max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  }
  @media (max-width:767px){
    .footer-grid{grid-template-columns:1fr;padding:44px 0 32px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

  /* ============ 响应式头部 ============ */
  @media (max-width:1023px){
    .page-head-inner{grid-template-columns:1fr;padding:36px 26px;gap:24px;}
    .page-head h1{font-size:32px;}
  }
  @media (max-width:767px){
    .page-head-inner{padding:30px 20px;}
    .page-head h1{font-size:28px;}
    .page-head .lead{font-size:15px;}
    .head-stats{flex-wrap:wrap;}
    .head-stat{flex:1 1 140px;}
    h2.section-h2{font-size:22px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
    .cta-band h2{font-size:22px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
    --brand:#103B2F;
    --brand-deep:#0A2A21;
    --accent:#FF5B23;
    --accent-strong:#D93F0B;
    --teal:#2FBFA6;
    --bg:#F7F5F0;
    --surface:#FFFFFF;
    --surface-2:#F2EFE7;
    --line:#E3DFD5;
    --ink:#17201C;
    --ink-2:#5A6560;
    --ink-3:#8C948F;
    --star:#FFB020;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --r-block:18px;
    --sh-sm:0 1px 2px rgba(16,59,47,.06);
    --sh-md:0 10px 28px rgba(16,59,47,.12);
    --font: 'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  html body.site-body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s ease;}
  a:hover{color:var(--accent);}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0 0 1.2em;}
  p:last-child{margin-bottom:0;}
  h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--ink);}
  .num{font-variant-numeric:tabular-nums;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 16px;
  }
  @media (min-width:768px){ .container{padding:0 24px;} }
  @media (min-width:1024px){ .container{padding:0 32px;} }

  /* ---------- 顶部信息条 ---------- */
  .topbar{
    background:var(--brand-deep);
    color:rgba(255,255,255,.82);
    font-size:13px;
    line-height:1.6;
  }
  .topbar-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:36px;
    padding-top:4px;
    padding-bottom:4px;
  }
  .topbar-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
  .topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
  .topbar-tips{display:none;gap:22px;color:rgba(255,255,255,.66);}
  @media (min-width:900px){ .topbar-tips{display:flex;} }
  .topbar-actions{display:flex;align-items:center;gap:14px;flex:none;}
  .topbar-actions .link-ghost{color:rgba(255,255,255,.78);font-size:13px;}
  .topbar-actions .link-ghost:hover{color:var(--teal);}
  .btn-mini{
    display:inline-flex;align-items:center;
    background:var(--accent);color:#fff;
    font-size:13px;font-weight:600;
    padding:5px 14px;border-radius:999px;
    transition:background-color .2s ease,transform .2s ease;
  }
  .btn-mini:hover{background:var(--accent-strong);color:#fff;transform:translateY(-1px);}
  @media (max-width:520px){
    .topbar-tips{display:none;}
    .topbar-actions .link-ghost{display:none;}
  }

  /* ---------- 主导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.scrolled{box-shadow:0 4px 16px rgba(16,59,47,.12);}
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    height:72px;transition:height .25s ease;
  }
  .site-header.scrolled .header-inner{height:60px;}

  .logo{display:flex;align-items:center;gap:10px;flex:none;}
  .logo-mark{
    width:32px;height:32px;flex:none;
    border-radius:9px;background:var(--brand);color:#fff;
    display:flex;align-items:center;justify-content:center;
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.18;}
  .logo-text .l1{font-size:16px;font-weight:800;color:var(--brand);letter-spacing:.02em;}
  .logo-text .l2{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.14em;}
  .logo:hover .logo-text .l1{color:var(--accent-strong);}

  .nav-links{display:none;align-items:center;gap:28px;}
  @media (min-width:1024px){ .nav-links{display:flex;} }
  .nav-links a{
    position:relative;
    font-size:15px;color:var(--ink);
    padding:6px 0;
  }
  .nav-links a::after{
    content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--brand);border-radius:2px;
    transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-links a:hover{color:var(--brand);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--brand);font-weight:600;}
  .nav-links a.active::after{background:var(--accent);transform:scaleX(1);}
  .nav-links a.active::before{
    content:'';position:absolute;top:-1px;right:-11px;
    width:6px;height:6px;border-radius:50%;background:var(--teal);
  }

  .header-actions{display:flex;align-items:center;gap:18px;flex:none;}
  .header-actions .link-plain{display:none;font-size:15px;color:var(--brand);font-weight:600;}
  .header-actions .link-plain:hover{color:var(--accent);}
  @media (min-width:1024px){ .header-actions .link-plain{display:inline;} }
  .header-actions .btn{display:none;}
  @media (min-width:640px){ .header-actions .btn{display:inline-flex;} }

  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:10px;
    border:1.5px solid var(--line);background:var(--surface);color:var(--brand);
    cursor:pointer;transition:border-color .2s ease,background-color .2s ease;
  }
  .nav-toggle:hover{border-color:var(--brand);background:var(--surface-2);}
  @media (min-width:1024px){ .nav-toggle{display:none;} }

  /* ---------- 按钮体系 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1.2;
    border:1.5px solid transparent;cursor:pointer;
    transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-strong);color:#fff;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-primary:focus-visible{outline:3px solid rgba(255,91,35,.35);outline-offset:2px;}
  .btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
  .btn-outline:hover{background:var(--brand);color:#fff;}
  .btn-outline:active{background:var(--brand-deep);color:#fff;}
  .btn-outline:focus-visible{outline:3px solid rgba(47,191,166,.35);outline-offset:2px;}
  .btn-outline-light{border-color:rgba(255,255,255,.62);color:#fff;background:transparent;}
  .btn-outline-light:hover{background:#fff;color:var(--brand-deep);border-color:#fff;}
  .btn-outline-light:focus-visible{outline:3px solid rgba(255,255,255,.4);outline-offset:2px;}
  .btn-block{width:100%;}
  .btn-sm{padding:9px 18px;font-size:14px;}

  /* ---------- 移动抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;z-index:80;
    background:rgba(10,42,33,.55);
    opacity:0;visibility:hidden;
    transition:opacity .3s ease,visibility .3s ease;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:90;
    width:84%;max-width:340px;
    background:var(--surface);
    padding:22px;
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .3s ease;
    box-shadow:-10px 0 30px rgba(10,42,33,.18);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line);}
  .drawer-close{
    width:36px;height:36px;border-radius:9px;border:1.5px solid var(--line);
    background:transparent;color:var(--brand);cursor:pointer;
    display:flex;align-items:center;justify-content:center;
  }
  .drawer-close:hover{border-color:var(--brand);background:var(--surface-2);}
  .drawer-nav{display:flex;flex-direction:column;padding:12px 0;gap:2px;}
  .drawer-nav a{
    padding:12px 10px;border-radius:10px;font-size:15px;
    color:var(--ink);display:flex;align-items:center;justify-content:space-between;
  }
  .drawer-nav a:hover{background:var(--surface-2);color:var(--brand);}
  .drawer-nav a.active{background:rgba(16,59,47,.06);color:var(--brand);font-weight:600;}
  .drawer-nav a.active::after{content:'';width:6px;height:6px;border-radius:50%;background:var(--teal);}
  .drawer-cta{display:flex;flex-direction:column;gap:10px;padding-top:18px;border-top:1px solid var(--line);}

  /* ---------- 面包屑与页面头 ---------- */
  .breadcrumb{
    font-size:13px;color:var(--ink-3);
    padding:20px 0 0;
    display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  }
  .breadcrumb a{color:var(--ink-3);}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:var(--line);}
  .breadcrumb .current{color:var(--ink);}

  .page-head{padding:28px 0 56px;}
  @media (min-width:1024px){ .page-head{padding:36px 0 72px;} }
  .page-head-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
  @media (min-width:1024px){ .page-head-grid{grid-template-columns:1.45fr 1fr;gap:56px;} }
  .page-head h1{
    font-size:28px;font-weight:800;line-height:1.3;letter-spacing:.01em;
    margin-bottom:16px;
  }
  @media (min-width:1024px){ .page-head h1{font-size:40px;} }
  .page-head .lead{
    font-size:16px;color:var(--ink-2);line-height:1.85;
    max-width:640px;margin-bottom:22px;
  }
  .page-head-tags{display:flex;flex-wrap:wrap;gap:10px;}
  .tag-pill{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:var(--brand);
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:999px;padding:5px 13px;
  }
  .tag-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);}

  .head-panel{
    background:var(--brand);
    border-radius:var(--r-block);
    padding:28px;
    color:#fff;
    box-shadow:var(--sh-md);
  }
  .head-panel-label{
    font-size:13px;letter-spacing:.14em;
    color:rgba(255,255,255,.62);
    margin-bottom:20px;
  }
  .head-panel ul{display:flex;flex-direction:column;gap:18px;}
  .head-panel li{display:flex;align-items:baseline;gap:12px;border-top:1px solid rgba(255,255,255,.14);padding-top:16px;}
  .head-panel li:first-child{border-top:0;padding-top:0;}
  .head-panel strong{font-size:26px;font-weight:800;color:var(--accent);line-height:1;}
  .head-panel span{font-size:14px;color:rgba(255,255,255,.86);line-height:1.6;}

  /* ---------- 通用区块 ---------- */
  .section{padding:56px 0;}
  @media (min-width:1024px){ .section{padding:72px 0;} }
  .section-surface{background:var(--surface);}
  .section-alt{background:var(--surface-2);}
  .sec-head{margin-bottom:28px;}
  @media (min-width:1024px){ .sec-head{margin-bottom:36px;} }
  .sec-title{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:700;}
  @media (min-width:1024px){ .sec-title{font-size:30px;} }
  .sec-title::before{
    content:'';width:4px;height:20px;border-radius:2px;background:var(--brand);flex:none;
  }
  @media (min-width:1024px){ .sec-title::before{height:26px;} }
  .sec-sub{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:760px;}

  /* ---------- 步骤流程 ---------- */
  .steps{max-width:880px;margin:0 auto;}
  .step{
    position:relative;
    display:flex;gap:20px;
    padding-bottom:38px;
  }
  .step:last-child{padding-bottom:0;}
  .step::before{
    content:'';position:absolute;left:19px;top:48px;bottom:14px;
    width:2px;background:var(--line);
  }
  .step:last-child::before{display:none;}
  .step-num{
    width:40px;height:40px;flex:none;
    border-radius:50%;background:var(--accent);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:15px;font-weight:700;
    box-shadow:0 6px 16px rgba(255,91,35,.26);
    font-variant-numeric:tabular-nums;
  }
  .step-body{padding-top:4px;}
  .step-body h3{font-size:18px;font-weight:600;margin-bottom:8px;}
  .step-body p{font-size:15px;line-height:1.85;color:var(--ink-2);}
  .step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
  .step-tag{
    font-size:12px;color:var(--ink-2);
    background:var(--surface-2);
    border-radius:999px;padding:4px 11px;
  }

  /* ---------- 图文交替 ---------- */
  .feature-row{
    display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  }
  @media (min-width:1024px){
    .feature-row{grid-template-columns:1fr 1fr;gap:56px;}
    .feature-row.reverse .feature-media{order:2;}
  }
  .media-frame{
    border-radius:var(--r-block);overflow:hidden;
    background:var(--surface-2);border:1px solid var(--line);
  }
  .media-frame img{
    width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;
  }
  .feature-body h3{font-size:20px;font-weight:600;margin-bottom:14px;}
  @media (min-width:1024px){ .feature-body h3{font-size:22px;} }
  .feature-body p{font-size:16px;line-height:1.85;color:var(--ink-2);}
  .bullet-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
  .bullet-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink);}
  .bullet-list .tick{
    width:18px;height:18px;flex:none;margin-top:5px;
    border-radius:50%;background:rgba(47,191,166,.16);color:var(--brand);
    display:flex;align-items:center;justify-content:center;
  }
  .feature-gap{margin-top:56px;}
  @media (min-width:1024px){ .feature-gap{margin-top:80px;} }

  /* ---------- FAQ ---------- */
  .faq-list{
    display:grid;grid-template-columns:1fr;gap:0;
    max-width:1100px;
  }
  @media (min-width:768px){ .faq-list{grid-template-columns:1fr 1fr;column-gap:48px;} }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
    padding:18px 0;font-size:16px;font-weight:600;color:var(--ink);
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand);}
  .faq-item summary:focus-visible{outline:3px solid rgba(47,191,166,.3);outline-offset:3px;border-radius:6px;}
  .faq-icon{
    width:20px;height:20px;flex:none;margin-top:4px;color:var(--accent);
    transition:transform .25s ease;
  }
  .faq-item[open] .faq-icon{transform:rotate(45deg);}
  .faq-answer{
    font-size:15px;line-height:1.85;color:var(--ink-2);
    padding:0 0 20px;max-width:720px;
  }

  /* ---------- 相关分类卡 ---------- */
  .rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){ .rel-grid{grid-template-columns:repeat(3,1fr);} }
  .rel-card{
    display:flex;flex-direction:column;gap:12px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
    box-shadow:var(--sh-sm);
    transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  }
  .rel-card:hover{
    box-shadow:var(--sh-md);
    transform:translateY(-2px);
    border-color:rgba(16,59,47,.2);
    color:inherit;
  }
  .rel-icon{
    width:38px;height:38px;border-radius:11px;
    background:rgba(47,191,166,.14);color:var(--brand);
    display:flex;align-items:center;justify-content:center;
  }
  .rel-card h3{font-size:17px;font-weight:600;}
  .rel-card p{font-size:14px;line-height:1.75;color:var(--ink-2);}
  .rel-more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
  .rel-card:hover .rel-more{color:var(--accent);}

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--brand);
    border-radius:var(--r-block);
    padding:32px 24px;
    display:flex;flex-direction:column;gap:22px;
    color:#fff;
  }
  @media (min-width:1024px){
    .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px;gap:40px;}
  }
  .cta-band h2{font-size:22px;font-weight:700;color:#fff;margin-bottom:10px;}
  @media (min-width:1024px){ .cta-band h2{font-size:28px;} }
  .cta-band p{font-size:15px;color:rgba(255,255,255,.78);line-height:1.8;max-width:560px;margin:0;}
  .cta-actions{display:flex;flex-direction:column;gap:12px;}
  @media (min-width:640px){ .cta-actions{flex-direction:row;} }
  @media (min-width:1024px){ .cta-actions{flex:none;} }
  .cta-actions .btn{width:100%;}
  @media (min-width:640px){ .cta-actions .btn{width:auto;} }

  /* ---------- 页脚 ---------- */
  .footer{
    background:var(--brand-deep);
    color:rgba(255,255,255,.8);
    font-size:14px;
    padding:56px 0 0;
    margin-top:72px;
  }
  @media (min-width:1024px){ .footer{margin-top:96px;} }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1fr 1fr;} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;} }
  .footer .logo-text .l1{color:#fff;}
  .footer .logo-text .l2{color:var(--teal);}
  .footer .logo-mark{background:rgba(255,255,255,.12);}
  .footer-desc{
    margin:18px 0 20px;font-size:14px;line-height:1.85;
    color:rgba(255,255,255,.7);max-width:360px;
  }
  .footer-social{display:flex;gap:10px;}
  .footer-social span{
    width:34px;height:34px;border-radius:10px;
    background:rgba(255,255,255,.08);
    display:flex;align-items:center;justify-content:center;
    color:rgba(255,255,255,.82);
    transition:background-color .2s ease,color .2s ease;
  }
  .footer-social span:hover{background:rgba(47,191,166,.22);color:#fff;}
  .footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7;}
  .footer-links a:hover{color:var(--teal);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    margin-top:40px;padding:18px 0 22px;
    display:flex;flex-wrap:wrap;gap:12px;
    align-items:center;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.6);
  }
  .to-top{
    display:inline-flex;align-items:center;gap:6px;
    color:rgba(255,255,255,.8);font-size:13px;
  }
  .to-top:hover{color:var(--teal);}

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .4s ease,transform .4s ease;}
  .reveal.in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none;}
    html{scroll-behavior:auto;}
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  }

/* roulang page: category4 */
:root{
    --brand:#103B2F;
    --brand-deep:#0A2A21;
    --accent:#FF5B23;
    --accent-strong:#D93F0B;
    --teal:#2FBFA6;
    --bg:#F7F5F0;
    --surface:#FFFFFF;
    --surface-2:#F2EFE7;
    --line:#E3DFD5;
    --ink:#17201C;
    --ink-2:#5A6560;
    --ink-3:#8C948F;
    --star:#FFB020;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --r-lg:18px;
    --shadow-card:0 1px 2px rgba(16,59,47,.06);
    --shadow-hover:0 10px 28px rgba(16,59,47,.12);
    --wrap:1200px;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{ max-width:100%; display:block; }
  a{ color:var(--brand); text-decoration:none; }
  a:hover{ color:var(--accent); }
  button{ font-family:inherit; }
  h1,h2,h3,h4{ margin:0; color:var(--ink); }
  p{ margin:0 0 1.2em; }
  p:last-child{ margin-bottom:0; }
  ul,ol{ margin:0; padding:0; list-style:none; }
  .num{ font-variant-numeric:tabular-nums; }

  .container{
    width:100%;
    max-width:var(--wrap);
    margin:0 auto;
    padding:0 16px;
  }
  @media (min-width:768px){ .container{ padding:0 24px; } }
  @media (min-width:1024px){ .container{ padding:0 32px; } }

  :focus-visible{
    outline:3px solid rgba(255,91,35,.35);
    outline-offset:2px;
    border-radius:6px;
  }

  /* ============ 顶部信息条 ============ */
  .topbar{
    background:var(--brand-deep);
    color:rgba(255,255,255,.76);
    font-size:13px;
    line-height:1.6;
  }
  .topbar-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:36px;
    padding:6px 0;
  }
  .topbar-domain{
    color:#fff;
    font-weight:600;
    letter-spacing:.04em;
    white-space:nowrap;
  }
  .topbar-notes{
    display:none;
    gap:22px;
    color:rgba(255,255,255,.68);
  }
  .topbar-notes span{ white-space:nowrap; }
  .topbar-actions{
    display:flex;
    align-items:center;
    gap:14px;
    white-space:nowrap;
  }
  .topbar-link{
    color:rgba(255,255,255,.84);
    border-bottom:1px solid transparent;
    transition:color .2s, border-color .2s;
  }
  .topbar-link:hover{
    color:#fff;
    border-bottom-color:var(--teal);
  }
  .btn-mini{
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:var(--accent);
    color:#fff;
    font-size:12px;
    font-weight:600;
    padding:5px 13px;
    border-radius:999px;
    border:0;
    transition:background .2s;
  }
  .btn-mini:hover{ background:var(--accent-strong); color:#fff; }
  @media (min-width:768px){ .topbar-notes{ display:flex; } }

  /* ============ 主导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease, height .25s ease;
  }
  .site-header.scrolled{
    box-shadow:0 4px 16px rgba(16,59,47,.10);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    height:72px;
    transition:height .25s ease;
  }
  .site-header.scrolled .header-inner{ height:60px; }

  .logo{
    display:flex;
    align-items:center;
    gap:10px;
    color:var(--brand);
    flex:0 0 auto;
  }
  .logo:hover{ color:var(--brand); }
  .logo-mark{
    width:32px;
    height:32px;
    border-radius:9px;
    background:var(--brand);
    color:var(--teal);
    display:grid;
    place-items:center;
    flex:0 0 auto;
  }
  .logo-text{ display:flex; flex-direction:column; line-height:1.16; }
  .logo-text .l1{ font-size:16px; font-weight:800; letter-spacing:.02em; }
  .logo-text .l2{ font-size:11px; font-weight:600; letter-spacing:.16em; color:var(--ink-3); }

  .nav-links{
    display:none;
    align-items:center;
    gap:28px;
    font-size:15px;
  }
  .nav-links a{
    position:relative;
    padding:6px 0;
    color:var(--ink-2);
    font-weight:500;
    transition:color .2s;
    white-space:nowrap;
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:-1px;
    height:2px;
    border-radius:2px;
    background:transparent;
    transition:background .2s;
  }
  .nav-links a:hover{ color:var(--brand); }
  .nav-links a:hover::after{ background:var(--brand); }
  .nav-links a.active{ color:var(--brand); font-weight:700; }
  .nav-links a.active::after{ background:var(--accent); }
  .nav-links a.active::before{
    content:"";
    position:absolute;
    right:-11px;
    top:1px;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--teal);
  }

  .header-cta{
    display:none;
    align-items:center;
    gap:18px;
    flex:0 0 auto;
  }
  .link-underline{
    color:var(--brand);
    font-size:15px;
    font-weight:600;
    border-bottom:2px solid var(--brand);
    padding-bottom:2px;
    transition:color .2s, border-color .2s;
  }
  .link-underline:hover{ color:var(--accent); border-bottom-color:var(--accent); }

  .menu-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;
    height:40px;
    border:1px solid var(--line);
    background:var(--surface);
    border-radius:10px;
    color:var(--brand);
    cursor:pointer;
    transition:border-color .2s, background .2s;
  }
  .menu-btn:hover{ border-color:var(--brand); background:var(--surface-2); }

  @media (min-width:1024px){
    .nav-links{ display:flex; }
    .header-cta{ display:flex; }
    .menu-btn{ display:none; }
  }

  /* ============ 通用按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-size:15px;
    font-weight:600;
    line-height:1.2;
    padding:12px 22px;
    border-radius:var(--r-btn);
    border:1.5px solid transparent;
    cursor:pointer;
    text-align:center;
    transition:background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
  }
  .btn-primary{ background:var(--accent); color:#fff; }
  .btn-primary:hover{ background:var(--accent-strong); color:#fff; transform:translateY(-1px); }
  .btn-primary:active{ transform:translateY(0); }
  .btn-outline{ border-color:var(--brand); color:var(--brand); background:transparent; }
  .btn-outline:hover{ background:var(--brand); color:#fff; }
  .btn-light{ border-color:rgba(255,255,255,.62); color:#fff; background:transparent; }
  .btn-light:hover{ background:#fff; color:var(--brand-deep); }
  .btn-sm{ padding:9px 16px; font-size:14px; }
  .btn-block{ width:100%; }
  .btn[disabled]{ opacity:.45; pointer-events:none; }

  /* ============ 面包屑 ============ */
  .breadcrumb{
    padding:20px 0 4px;
    font-size:13px;
    color:var(--ink-3);
  }
  .breadcrumb ol{ display:flex; flex-wrap:wrap; align-items:center; gap:6px; }
  .breadcrumb a{ color:var(--ink-3); }
  .breadcrumb a:hover{ color:var(--brand); }
  .breadcrumb .sep{ color:var(--line); }
  .breadcrumb .current{ color:var(--ink); }

  /* ============ 页面头 ============ */
  .page-hero{
    position:relative;
    background:var(--brand-deep);
    color:#fff;
    overflow:hidden;
  }
  .page-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:
      linear-gradient(100deg, rgba(10,42,33,.94) 0%, rgba(10,42,33,.82) 46%, rgba(16,59,47,.62) 100%),
      url("/assets/images/backpic/back-3.webp");
    background-size:cover;
    background-position:center;
    opacity:.96;
  }
  .page-hero-inner{
    position:relative;
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
    padding:48px 0 52px;
  }
  .hero-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    letter-spacing:.08em;
    color:var(--teal);
    border:1px solid rgba(47,191,166,.42);
    border-radius:999px;
    padding:4px 12px;
    width:max-content;
    margin-bottom:18px;
  }
  .page-hero h1{
    color:#fff;
    font-size:28px;
    line-height:1.32;
    font-weight:800;
    letter-spacing:.01em;
  }
  .page-hero h1 em{
    font-style:normal;
    color:var(--teal);
  }
  .page-hero-lead{
    margin-top:16px;
    max-width:660px;
    font-size:15px;
    line-height:1.85;
    color:rgba(255,255,255,.82);
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:26px;
  }
  .hero-note{
    background:rgba(255,255,255,.07);
    border:1px solid rgba(255,255,255,.16);
    border-radius:var(--r-lg);
    padding:22px 22px 20px;
    backdrop-filter:none;
  }
  .hero-note h2{
    color:#fff;
    font-size:17px;
    font-weight:700;
    margin-bottom:14px;
  }
  .hero-note ul{ display:flex; flex-direction:column; gap:11px; }
  .hero-note li{
    display:flex;
    gap:10px;
    align-items:flex-start;
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.84);
  }
  .dot{
    flex:0 0 auto;
    width:7px;
    height:7px;
    margin-top:8px;
    border-radius:50%;
    background:var(--teal);
  }
  .hero-note-foot{
    margin-top:16px;
    padding-top:14px;
    border-top:1px solid rgba(255,255,255,.14);
    font-size:13px;
    color:rgba(255,255,255,.6);
  }
  @media (min-width:1024px){
    .page-hero-inner{
      grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
      align-items:center;
      gap:56px;
      padding:68px 0 72px;
    }
    .page-hero h1{ font-size:40px; }
    .page-hero-lead{ font-size:16px; }
  }

  /* ============ 指标条 ============ */
  .metrics{ background:var(--brand); color:#fff; }
  .metrics-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .metric{
    padding:26px 20px;
    border-top:1px solid rgba(255,255,255,.14);
  }
  .metric:nth-child(1),
  .metric:nth-child(2){ border-top:0; }
  .metric:nth-child(even){ border-left:1px solid rgba(255,255,255,.14); }
  .metric-num{
    font-size:26px;
    font-weight:800;
    line-height:1.2;
    letter-spacing:-.01em;
    font-variant-numeric:tabular-nums;
    color:#fff;
  }
  .metric-num small{
    font-size:13px;
    font-weight:600;
    margin-left:4px;
    color:rgba(255,255,255,.7);
  }
  .metric-label{
    margin-top:6px;
    font-size:13px;
    color:rgba(255,255,255,.7);
    letter-spacing:.02em;
  }
  @media (min-width:768px){
    .metrics-grid{ grid-template-columns:repeat(4,minmax(0,1fr)); }
    .metric{
      border-top:0;
      border-left:1px solid rgba(255,255,255,.14);
      padding:32px 26px;
    }
    .metric:nth-child(1){ border-left:0; }
    .metric:nth-child(even){ border-left:1px solid rgba(255,255,255,.14); }
    .metric-num{ font-size:30px; }
  }

  /* ============ 区块 ============ */
  .section{ padding:56px 0; }
  .section-alt{ background:var(--surface-2); }
  .section-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:30px;
  }
  .section-title{
    position:relative;
    padding-left:16px;
    font-size:22px;
    font-weight:700;
    line-height:1.35;
    letter-spacing:.01em;
  }
  .section-title::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    width:4px;
    height:20px;
    border-radius:2px;
    background:var(--brand);
  }
  .section-sub{
    margin-top:10px;
    padding-left:16px;
    font-size:14px;
    color:var(--ink-2);
    max-width:640px;
  }
  @media (min-width:1024px){
    .section{ padding:72px 0; }
    .section-title{ font-size:30px; }
  }

  .tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:12px;
    font-weight:600;
    padding:3px 11px;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--ink-2);
    background:var(--surface);
    letter-spacing:.02em;
  }
  .tag-teal{ border-color:rgba(47,191,166,.5); color:#1E8C79; }
  .tag-accent{ border-color:rgba(255,91,35,.45); color:var(--accent-strong); }

  .rail-tools{
    display:none;
    gap:10px;
  }
  .rail-btn{
    width:40px;
    height:40px;
    border-radius:50%;
    background:var(--surface);
    border:1px solid var(--line);
    color:var(--brand);
    display:grid;
    place-items:center;
    cursor:pointer;
    transition:background .2s, color .2s, border-color .2s;
  }
  .rail-btn:hover{ background:var(--brand); color:#fff; border-color:var(--brand); }
  @media (min-width:1024px){ .rail-tools{ display:flex; } }

  .rail-wrap{ position:relative; }
  .rail{
    display:flex;
    gap:20px;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding:4px 2px 18px;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .rail::-webkit-scrollbar{ display:none; }
  .rail-card{
    flex:0 0 80%;
    max-width:340px;
    scroll-snap-align:start;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    overflow:hidden;
    transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .rail-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-hover);
    border-color:#D6D1C5;
  }
  .rail-thumb{
    aspect-ratio:16/10;
    overflow:hidden;
    background:var(--surface-2);
  }
  .rail-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .35s ease;
  }
  .rail-card:hover .rail-thumb img{ transform:scale(1.03); }
  .rail-body{ padding:18px; }
  .rail-body h3{
    font-size:17px;
    font-weight:600;
    line-height:1.5;
    margin:12px 0 8px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .rail-body p{
    font-size:14px;
    line-height:1.75;
    color:var(--ink-2);
    margin:0;
  }
  @media (min-width:768px){ .rail-card{ flex:0 0 340px; } }

  /* ============ 要点清单 ============ */
  .spec-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:0 48px;
  }
  .spec-item{
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .spec-item dt{
    border-left:3px solid var(--brand);
    padding-left:13px;
    font-size:16px;
    font-weight:700;
    line-height:1.5;
    margin-bottom:10px;
  }
  .spec-item dd{
    margin:0;
    padding-left:16px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-2);
  }
  @media (min-width:768px){
    .spec-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  }

  /* ============ FAQ ============ */
  .faq-list{
    display:grid;
    grid-template-columns:1fr;
    max-width:1040px;
  }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-q{
    width:100%;
    background:none;
    border:0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:18px 0;
    font-size:15.5px;
    font-weight:600;
    line-height:1.6;
    color:var(--ink);
    text-align:left;
    cursor:pointer;
    transition:color .2s;
  }
  .faq-q:hover{ color:var(--brand); }
  .faq-icon{
    position:relative;
    flex:0 0 auto;
    width:18px;
    height:18px;
    transition:transform .25s ease;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--accent);
    border-radius:2px;
  }
  .faq-icon::before{ left:0; top:8px; width:18px; height:2px; }
  .faq-icon::after{ left:8px; top:0; width:2px; height:18px; }
  .faq-item.open .faq-icon{ transform:rotate(45deg); }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
  }
  .faq-a p{
    padding:0 40px 20px 0;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-2);
    margin:0;
  }
  @media (min-width:768px){
    .faq-list{
      grid-template-columns:repeat(2,minmax(0,1fr));
      column-gap:52px;
    }
  }

  /* ============ CTA ============ */
  .cta-band{
    background:var(--brand-deep);
    border-radius:var(--r-lg);
    padding:32px 24px;
    color:#fff;
    display:grid;
    grid-template-columns:1fr;
    gap:22px;
  }
  .cta-band h2{
    color:#fff;
    font-size:22px;
    font-weight:700;
    line-height:1.35;
  }
  .cta-band p{
    margin-top:10px;
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.78);
    max-width:560px;
  }
  .cta-actions{
    display:flex;
    flex-direction:column;
    gap:12px;
  }
  .cta-actions .btn{ width:100%; }
  @media (min-width:768px){
    .cta-band{ padding:40px; }
    .cta-actions{ flex-direction:row; }
    .cta-actions .btn{ width:auto; }
  }
  @media (min-width:1024px){
    .cta-band{
      grid-template-columns:minmax(0,1fr) auto;
      align-items:center;
      padding:44px 48px;
      gap:40px;
    }
    .cta-band h2{ font-size:26px; }
  }

  /* ============ 页脚 ============ */
  .footer{
    background:var(--brand-deep);
    color:rgba(255,255,255,.72);
    margin-top:56px;
    padding-top:56px;
    font-size:14px;
  }
  .footer .logo-text .l1{ color:#fff; }
  .footer .logo-text .l2{ color:rgba(255,255,255,.55); }
  .footer .logo{ color:#fff; }
  .footer-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:34px;
  }
  .footer h4{
    color:#fff;
    font-size:15px;
    font-weight:600;
    margin-bottom:16px;
    letter-spacing:.02em;
  }
  .footer-desc{
    font-size:14px;
    line-height:1.85;
    color:rgba(255,255,255,.7);
    margin:16px 0 18px;
    max-width:340px;
  }
  .footer-links{
    display:flex;
    flex-direction:column;
    gap:11px;
  }
  .footer-links a{
    color:rgba(255,255,255,.72);
    transition:color .2s;
    width:max-content;
  }
  .footer-links a:hover{ color:var(--teal); }
  .footer-links span{ color:rgba(255,255,255,.55); }
  .footer-social{ display:flex; gap:10px; }
  .footer-social span{
    width:34px;
    height:34px;
    border-radius:9px;
    border:1px solid rgba(255,255,255,.18);
    display:grid;
    place-items:center;
    color:rgba(255,255,255,.78);
    transition:border-color .2s, color .2s;
  }
  .footer-social span:hover{ border-color:var(--teal); color:var(--teal); }
  .footer-bottom{
    margin-top:42px;
    border-top:1px solid rgba(255,255,255,.12);
    padding:18px 0 24px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    font-size:13px;
    color:rgba(255,255,255,.58);
  }
  .footer-bottom a{ color:rgba(255,255,255,.78); }
  .footer-bottom a:hover{ color:var(--teal); }
  .to-top{
    display:inline-flex;
    align-items:center;
    gap:6px;
    border:1px solid rgba(255,255,255,.2);
    border-radius:8px;
    padding:5px 12px;
    transition:border-color .2s, color .2s;
  }
  .to-top:hover{ border-color:var(--teal); }
  @media (min-width:768px){
    .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:38px; }
  }
  @media (min-width:1024px){
    .footer{ padding-top:64px; }
    .footer-grid{ grid-template-columns:1.5fr 1fr 1fr 1.15fr; gap:40px; }
  }

  /* ============ 移动抽屉 ============ */
  .drawer{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(84vw,340px);
    background:var(--surface);
    z-index:90;
    transform:translateX(102%);
    transition:transform .28s ease;
    display:flex;
    flex-direction:column;
    padding:20px;
    overflow-y:auto;
    box-shadow:-12px 0 32px rgba(10,42,33,.18);
  }
  .drawer.open{ transform:translateX(0); }
  .drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:18px;
  }
  .drawer-title{
    font-size:15px;
    font-weight:700;
    color:var(--brand);
    letter-spacing:.06em;
  }
  .drawer-close{
    width:36px;
    height:36px;
    border-radius:10px;
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--ink-2);
    display:grid;
    place-items:center;
    cursor:pointer;
    transition:border-color .2s, color .2s;
  }
  .drawer-close:hover{ border-color:var(--brand); color:var(--brand); }
  .drawer-links{
    display:flex;
    flex-direction:column;
    border-top:1px solid var(--line);
  }
  .drawer-links a{
    padding:14px 2px;
    border-bottom:1px solid var(--line);
    font-size:15px;
    font-weight:500;
    color:var(--ink-2);
    transition:color .2s, padding-left .2s;
  }
  .drawer-links a:hover{ color:var(--brand); padding-left:6px; }
  .drawer-links a.active{ color:var(--brand); font-weight:700; }
  .drawer-cta{
    margin-top:22px;
    display:flex;
    flex-direction:column;
    gap:12px;
  }
  .drawer-mask{
    position:fixed;
    inset:0;
    background:rgba(10,42,33,.55);
    z-index:80;
    opacity:0;
    visibility:hidden;
    transition:opacity .25s ease, visibility .25s ease;
  }
  .drawer-mask.show{ opacity:1; visibility:visible; }

  /* ============ 动效 ============ */
  .reveal{
    opacity:0;
    transform:translateY(14px);
    transition:opacity .4s ease, transform .4s ease;
  }
  .reveal.in{ opacity:1; transform:none; }

  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    .reveal{ opacity:1; transform:none; transition:none; }
    .rail-thumb img,
    .rail-card,
    .btn{ transition:none; }
    .drawer{ transition:none; }
  }