/* roulang page: index */
:root{
  --ink:#12161A;
  --ink-2:#1F272C;
  --accent:#A8D620;
  --accent-hover:#93BE17;
  --accent-soft:#F3F9DF;
  --bg:#FFFFFF;
  --bg-alt:#F7F6F2;
  --line:#E4E2DB;
  --line-strong:#D6D3C9;
  --text:#1C2329;
  --text-body:#3B4247;
  --text-muted:#6E757B;
  --ok:#2E9E6B;
  --warn:#D99A1B;
  --danger:#D0453B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-sm:0 1px 2px rgba(18,22,26,.06);
  --shadow-md:0 8px 24px rgba(18,22,26,.08);
  --shadow-lg:0 16px 40px rgba(18,22,26,.12);
  --container:1200px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-secondary:hover{background:var(--bg-alt)}
.btn-ghost-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--ink);
  border-bottom:2px solid var(--accent);padding-bottom:2px;
  transition:border-color .18s ease,color .18s ease;
}
.text-link:hover{border-bottom-color:var(--ink)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--radius-badge);background:var(--accent-soft);color:var(--ink);
  font-size:12px;font-weight:600;line-height:1;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:24px;height:24px;color:var(--ink);flex:0 0 auto}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.2px;color:var(--ink);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:6px}
.nav-link{
  position:relative;display:inline-block;padding:22px 0;
  font-size:16px;font-weight:500;color:var(--text-body);
  transition:color .18s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:10px;height:2px;
  background:var(--accent);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;width:220px;
  padding:0 14px;border-radius:999px;background:var(--bg-alt);
  border:1px solid transparent;
  transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--accent);box-shadow:0 0 0 2px rgba(168,214,32,.25)}
.search-box svg{flex:0 0 auto;color:var(--text-muted)}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--text-muted)}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);align-items:center;justify-content:center;
  transition:background-color .18s ease,border-color .18s ease;
}
.menu-toggle:hover{background:var(--bg-alt);border-color:var(--line-strong)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,22,26,.45);
  opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:110;
}
.drawer-mask.show{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:80%;max-width:360px;
  background:#fff;z-index:120;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .2s ease;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  display:grid;place-items:center;color:var(--ink);background:#fff;
}
.drawer-body{padding:16px 20px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.drawer-body .nav-link{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;width:100%}
.drawer-body .nav-link.active::after{display:none}
.drawer-body .nav-link.active{color:var(--ink);font-weight:700}
.drawer-foot{padding:16px 20px 24px;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line);margin-top:auto}
.drawer-foot .search-box{width:100%}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;display:flex;align-items:center;overflow:hidden;
  min-height:clamp(460px,72vh,640px);
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#fff;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(18,22,26,.90) 0%,rgba(18,22,26,.74) 46%,rgba(18,22,26,.34) 100%);
}
.hero .container{position:relative;z-index:1;padding-top:64px;padding-bottom:64px}
.hero-content{max-width:620px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--accent);
  margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--accent)}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;
  letter-spacing:-.5px;color:#fff;margin-bottom:18px;
}
.hero-sub{
  font-size:clamp(15px,1.3vw,18px);line-height:1.75;color:rgba(255,255,255,.84);
  max-width:560px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:44px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-stat .num{font-size:22px;font-weight:700;color:#fff;line-height:1.3}
.hero-stat .lab{font-size:13px;color:rgba(255,255,255,.7);margin-top:2px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--ink);color:#fff}
.section-accent{background:var(--accent-soft)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:40px;flex-wrap:wrap;
}
.section-head h2{
  font-size:30px;line-height:1.3;font-weight:700;
  color:var(--ink);letter-spacing:-.3px;
}
.section-head .sub{font-size:15px;color:var(--text-muted);margin-top:10px;max-width:620px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.06em;color:var(--text-muted);margin-bottom:14px;
}
.eyebrow::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--accent)}

/* ---------- 业务范围 ---------- */
.biz-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.biz-aside{position:sticky;top:96px}
.biz-aside h2{font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.3px}
.biz-aside p{font-size:15px;color:var(--text-body);margin-top:16px;line-height:1.8}
.biz-aside .text-link{margin-top:22px}
.biz-item{
  display:flex;align-items:center;gap:20px;
  padding:24px 8px;border-top:1px solid var(--line);
  transition:background-color .18s ease,padding-left .18s ease;
}
.biz-item:last-child{border-bottom:1px solid var(--line)}
.biz-item:hover{background:var(--bg-alt);padding-left:18px}
.biz-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;background:var(--accent-soft);color:var(--ink);
}
.biz-body h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:4px}
.biz-body p{font-size:14.5px;line-height:1.7;color:var(--text-body)}
.biz-arrow{margin-left:auto;flex:0 0 auto;color:var(--text-muted);transition:transform .18s ease,color .18s ease}
.biz-item:hover .biz-arrow{transform:translateX(4px);color:var(--ink)}

/* ---------- 数据带 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-cell{padding:0 32px;border-left:1px solid rgba(255,255,255,.14)}
.stat-cell:first-child{border-left:0;padding-left:0}
.stat-cell .v{font-size:40px;font-weight:800;color:var(--accent);line-height:1.1;letter-spacing:-1px}
.stat-cell .t{font-size:14px;color:rgba(255,255,255,.7);margin-top:10px}
.band-title{
  font-size:22px;font-weight:700;color:#fff;line-height:1.4;
  margin-bottom:6px;
}
.band-sub{font-size:14.5px;color:rgba(255,255,255,.62);margin-bottom:44px;max-width:620px}

/* ---------- 车型卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.vehicle-card{
  display:flex;flex-direction:column;background:#fff;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.vehicle-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.vehicle-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.vehicle-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.vehicle-card:hover .vehicle-media img{transform:scale(1.03)}
.vehicle-media .badge{position:absolute;top:12px;left:12px}
.vehicle-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.vehicle-body h3{font-size:20px;font-weight:700;color:var(--ink);line-height:1.4}
.vehicle-body p{
  font-size:14.5px;line-height:1.7;color:var(--text-body);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.vehicle-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-muted);
}
.vehicle-foot .arrow{color:var(--text-muted);transition:transform .18s ease,color .18s ease}
.vehicle-card:hover .vehicle-foot .arrow{transform:translateX(4px);color:var(--ink)}

/* ---------- 最新动态 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:#fff;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body .badge{align-self:flex-start}
.news-body h3{
  font-size:17px;font-weight:700;line-height:1.45;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;line-height:1.7;color:var(--text-body);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-time{margin-top:auto;padding-top:12px;font-size:13px;color:var(--text-muted)}
.empty-state{
  grid-column:1 / -1;
  border:1px dashed var(--line);border-radius:var(--radius-card);
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;text-align:center;padding:28px;background:#fff;
}
.empty-state strong{font-size:15px;font-weight:600;color:var(--ink)}
.empty-state .es-sub{font-size:13.5px;color:var(--text-muted)}

/* ---------- 方案流程 ---------- */
.plan-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.plan-aside{position:sticky;top:96px}
.plan-aside h2{font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.3px}
.plan-aside p{font-size:15px;line-height:1.8;color:var(--text-body);margin-top:16px}
.plan-aside .text-link{margin-top:22px}
.plan-list{display:flex;flex-direction:column;gap:16px}
.plan-item{
  display:flex;align-items:flex-start;gap:22px;
  padding:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.plan-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.plan-num{
  flex:0 0 auto;font-size:28px;font-weight:800;line-height:1;
  color:var(--accent);-webkit-text-stroke:1px var(--accent);
}
.plan-text{flex:1}
.plan-text h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:6px}
.plan-text p{font-size:14.5px;line-height:1.7;color:var(--text-body)}
.plan-item .arrow{color:var(--text-muted);transition:transform .18s ease,color .18s ease;flex:0 0 auto;margin-top:4px}
.plan-item:hover .arrow{transform:translateX(4px);color:var(--ink)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--ink)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:1px;
  transition:transform .2s ease,opacity .2s ease;
}
.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::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-body);padding:0 0 22px}
.faq-item.open .faq-a{max-height:420px}

/* ---------- CTA 表单 ---------- */
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{font-size:32px;line-height:1.3;font-weight:800;color:var(--ink);letter-spacing:-.4px}
.cta-copy p{font-size:15.5px;line-height:1.85;color:var(--text-body);margin-top:16px;max-width:460px}
.contact-list{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--ink);font-weight:500}
.contact-list .ic{
  flex:0 0 32px;width:32px;height:32px;border-radius:8px;
  display:grid;place-items:center;background:#fff;border:1px solid var(--line);color:var(--ink);
}
.contact-list small{display:block;font-size:13px;font-weight:400;color:var(--text-muted);margin-top:2px}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-sm);
}
.form-card h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:6px}
.form-card .form-desc{font-size:14px;color:var(--text-muted);margin-bottom:22px}
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.form-field input,.form-field textarea{
  width:100%;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;font-size:15px;color:var(--ink);outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-field input:focus,.form-field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(168,214,32,.25)}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-muted)}
.form-hint{font-size:13px;line-height:1.6;color:var(--text-muted);margin-top:12px}
.form-msg{font-size:13.5px;margin-top:12px;color:var(--ok);display:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{color:var(--accent)}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:280px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col a,.footer-col span{
  display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.72);
  transition:color .18s ease;
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;
  border-radius:12px;background:var(--ink);color:#fff;
  display:grid;place-items:center;z-index:90;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,background-color .18s ease;
  box-shadow:var(--shadow-md);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--ink-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .section{padding:72px 0}
  .search-box{width:180px}
  .main-nav{gap:22px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .main-nav,.header-actions .search-box,.header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .biz-grid,.plan-grid,.cta-grid{grid-template-columns:1fr;gap:32px}
  .biz-aside,.plan-aside{position:static}
  .card-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .stat-cell{padding:0 24px}
  .stat-cell:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero{min-height:0}
  .hero .container{padding-top:56px;padding-bottom:56px}
}
@media (max-width:767px){
  .section{padding:52px 0}
  .container{padding:0 16px}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:24px}
  .biz-aside h2,.plan-aside h2,.cta-copy h2{font-size:24px}
  .card-grid,.news-grid{grid-template-columns:1fr}
  .stat-cell .v{font-size:32px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-stats{gap:26px}
  .hero-stat .num{font-size:19px}
  .biz-item{padding:20px 4px;gap:16px}
  .biz-item:hover{padding-left:8px}
  .biz-body h3{font-size:16px}
  .biz-body p{font-size:14px}
  .plan-item{padding:20px;gap:16px}
  .faq-q{font-size:16px;padding:18px 0}
  .faq-a p{font-size:14.5px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-brand p{max-width:none}
  .site-footer{padding:52px 0 0}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink:#12161A;
  --ink-2:#1F272C;
  --accent:#A8D620;
  --accent-hover:#93BE17;
  --accent-soft:#F3F9DF;
  --bg:#FFFFFF;
  --bg-alt:#F7F6F2;
  --line:#E4E2DB;
  --text:#1C2329;
  --text-body:#3B4247;
  --text-muted:#6E757B;
  --ok:#2E9E6B;
  --warn:#D99A1B;
  --danger:#D0453B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-sm:0 1px 2px rgba(18,22,26,.06);
  --shadow-md:0 8px 24px rgba(18,22,26,.08);
  --shadow-lg:0 16px 40px rgba(18,22,26,.12);
  --container:1200px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--text);line-height:1.35;font-weight:700;}
p{margin:0 0 1.2em;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
ul,ol{margin:0;}
button{font:inherit;color:inherit;}
input,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;
  padding:10px 16px;border-radius:0 0 10px 0;z-index:999;
}
.skip-link:focus{left:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-md);}
.header-inner{
  display:flex;align-items:center;
  gap:32px;height:68px;
}
.logo{
  display:inline-flex;align-items:center;gap:9px;
  font-size:17px;font-weight:700;color:var(--ink);
  letter-spacing:-.2px;flex:none;
}
.logo-mark{width:24px;height:24px;color:var(--accent);flex:none;}
.main-nav{display:flex;align-items:center;gap:28px;margin-inline:auto;}
.nav-link{
  position:relative;
  font-size:16px;font-weight:500;color:var(--text-body);
  padding:23px 0;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:10px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--ink);}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:14px;flex:none;}
.search-box{
  position:relative;display:flex;align-items:center;
  height:40px;width:220px;
  background:var(--bg-alt);
  border:1px solid transparent;border-radius:999px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-box:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(168,214,32,.22);
  background:#fff;
}
.search-box svg{width:16px;height:16px;margin-left:14px;color:var(--text-muted);flex:none;}
.search-box input{
  border:0;background:transparent;height:100%;width:100%;
  padding:0 14px 0 8px;font-size:14px;color:var(--text);outline:none;
}
.search-box input::placeholder{color:var(--text-muted);}
.header-tools .btn{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--bg-alt);border-color:#D6D3C9;}
.nav-toggle svg{width:20px;height:20px;color:var(--ink);}
.mobile-drawer{
  display:none;
  position:fixed;top:60px;right:0;bottom:0;width:82%;max-width:340px;
  background:#fff;border-left:1px solid var(--line);
  padding:24px 20px;z-index:119;
  flex-direction:column;gap:6px;
  box-shadow:var(--shadow-lg);
  overflow-y:auto;
}
.mobile-drawer.open{display:flex;}
.mobile-drawer .nav-link{
  padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line);
}
.mobile-drawer .nav-link::after{display:none;}
.mobile-drawer .nav-link.active{color:var(--ink);}
.mobile-drawer .drawer-search{
  margin-top:18px;display:flex;align-items:center;height:46px;
  background:var(--bg-alt);border-radius:10px;border:1px solid var(--line);
}
.mobile-drawer .drawer-search svg{width:16px;height:16px;margin-left:14px;color:var(--text-muted);}
.mobile-drawer .drawer-search input{
  border:0;background:transparent;height:100%;width:100%;padding:0 14px 0 8px;
  font-size:14px;color:var(--text);outline:none;
}
.mobile-drawer .btn{margin-top:12px;width:100%;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:background .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--ink);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-secondary:hover{background:var(--bg-alt);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  text-decoration:underline;text-decoration-color:var(--accent);
  text-decoration-thickness:2px;text-underline-offset:4px;
  transition:gap .18s ease;
}
.link-arrow:hover{gap:10px;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--radius-badge);
  background:var(--accent-soft);color:var(--ink);
  font-size:12px;font-weight:600;line-height:1.6;
  white-space:nowrap;
}
.badge-outline{
  background:transparent;border:1px solid var(--line);color:var(--text-muted);
  font-weight:500;
}

/* ---------- Article hero ---------- */
.article-hero{
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  padding:26px 0 34px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-muted);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:#C6C3B9;}
.breadcrumb .current{
  color:var(--text-muted);
  max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-title{
  font-size:clamp(24px,3vw,36px);
  line-height:1.35;font-weight:800;
  letter-spacing:-.3px;
  max-width:820px;
  color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:14px;color:var(--text-muted);
}
.meta-divider{width:1px;height:14px;background:#D6D3C9;display:inline-block;}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:56px;
  padding:56px 0 72px;
  align-items:start;
}
.article-main{max-width:760px;min-width:0;}
.post-body{
  font-size:16px;line-height:1.9;color:var(--text-body);
}
.post-body > *:first-child{margin-top:0;}
.post-body h2{
  position:relative;
  font-size:22px;font-weight:700;color:var(--ink);
  margin:40px 0 16px;padding-left:14px;line-height:1.45;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:4px;
  background:var(--accent);border-radius:2px;
}
.post-body h3{font-size:18px;font-weight:700;color:var(--ink);margin:28px 0 12px;}
.post-body h4{font-size:16px;font-weight:600;color:var(--ink);margin:22px 0 10px;}
.post-body p{margin:0 0 1.2em;}
.post-body ul,.post-body ol{padding-left:1.4em;margin:0 0 1.2em;line-height:1.85;}
.post-body li{margin-bottom:.45em;}
.post-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:var(--bg-alt);
  border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;
  color:var(--text-body);font-size:15px;line-height:1.85;
}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body img{margin:24px auto;border-radius:var(--radius-img);width:auto;max-width:100%;height:auto;}
.post-body figure{margin:24px 0;}
.post-body figcaption{
  font-size:13px;color:var(--text-muted);text-align:center;margin-top:10px;line-height:1.6;
}
.post-body a{
  color:var(--ink);font-weight:500;
  text-decoration:underline;text-decoration-color:var(--accent);
  text-decoration-thickness:2px;text-underline-offset:4px;
}
.post-body a:hover{text-decoration-thickness:3px;}
.post-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;
}
.post-body th{
  background:var(--bg-alt);text-align:left;font-weight:600;color:var(--ink);
}
.post-body th,.post-body td{
  border:1px solid var(--line);padding:12px 16px;line-height:1.7;
}
.post-body pre{
  background:var(--ink);color:#E9EDF0;
  padding:16px 20px;border-radius:10px;
  overflow-x:auto;font-size:14px;line-height:1.75;margin:24px 0;
}
.post-body pre code{background:none;color:inherit;padding:0;}
.post-body code{
  font-family:ui-monospace,Menlo,Consolas,"Courier New",monospace;
  background:var(--bg-alt);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;font-size:14px;color:var(--ink);
}
.post-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- Empty state ---------- */
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-alt);
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;padding:32px 24px;text-align:center;
}
.empty-state strong{font-size:17px;color:var(--ink);}
.empty-state p{font-size:14px;color:var(--text-muted);max-width:420px;margin:0;}
.empty-state .btn{margin-top:6px;}

/* ---------- Post links ---------- */
.post-links{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:44px;padding-top:32px;border-top:1px solid var(--line);
}
.post-link-card{
  display:flex;flex-direction:column;gap:6px;
  padding:20px 22px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:#fff;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-link-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
  border-color:#D6D3C9;
}
.post-link-label{font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.04em;}
.post-link-title{font-size:15px;font-weight:600;color:var(--ink);line-height:1.6;}

/* ---------- Sidebar ---------- */
.article-side{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:20px;
  min-width:0;
}
.side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-sm);
}
.side-title{
  font-size:15px;font-weight:600;color:var(--ink);
  margin:0 0 14px;display:flex;align-items:center;gap:8px;
}
.side-title::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--accent);display:inline-block;
}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;}
.side-list li:last-child a{border-bottom:0;}
.side-list a{
  display:block;
  padding:11px 0 11px 14px;
  border-left:2px solid var(--line);
  border-bottom:1px solid var(--bg-alt);
  font-size:14px;line-height:1.65;color:var(--text-body);
  transition:border-color .18s ease,color .18s ease,padding-left .18s ease;
}
.side-list a:hover{
  border-left-color:var(--accent);
  color:var(--ink);
  padding-left:18px;
}
.side-cta{
  background:var(--ink);
  border:1px solid var(--ink-2);
  border-radius:var(--radius-card);
  padding:24px 22px;
}
.side-cta h3{
  color:#fff;font-size:17px;font-weight:700;margin:0 0 10px;line-height:1.5;
}
.side-cta p{
  color:rgba(255,255,255,.72);font-size:14px;line-height:1.75;margin:0 0 16px;
}
.side-cta .btn{width:100%;height:44px;font-size:14px;}
.side-cta .side-tel{
  display:block;margin-top:14px;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- CTA band ---------- */
.article-cta{
  background:var(--accent-soft);
  border:1px solid #E6EFC6;
  border-radius:20px;
  padding:44px 48px;
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:36px;align-items:center;
  margin-bottom:72px;
}
.article-cta h2{font-size:26px;font-weight:700;color:var(--ink);margin:0 0 12px;line-height:1.4;}
.article-cta p{font-size:15px;line-height:1.8;color:#3C4426;margin:0;max-width:560px;}
.article-cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.article-cta-actions .btn-secondary{border-color:var(--ink);}

/* ---------- Back to top ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:#fff;
  border:0;border-radius:12px;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease,background .18s ease;
  z-index:130;
  box-shadow:var(--shadow-md);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--ink-2);}
.back-top svg{width:18px;height:18px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin:0 0 16px;
}
.footer-col a,.footer-col span{
  display:block;
  font-size:14px;line-height:1.7;
  color:rgba(255,255,255,.72);
  margin-bottom:10px;
  transition:color .18s ease;
}
.footer-col a:hover{color:#fff;}
.footer-brand .logo{color:#fff;margin-bottom:14px;}
.footer-brand .logo-mark{color:var(--accent);}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);
  margin:0;max-width:320px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 24px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px;}
  .search-box{width:180px;}
  .main-nav{gap:22px;}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-tools .btn{height:40px;}
  .article-layout{grid-template-columns:1fr;gap:36px;padding:40px 0 56px;}
  .article-main{max-width:none;}
  .article-side{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .side-cta{grid-column:1 / -1;}
  .article-cta{grid-template-columns:1fr;padding:36px;gap:24px;}
  .article-cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .header-inner{height:60px;gap:16px;}
  .logo{font-size:16px;}
  .header-tools{gap:10px;}
  .header-tools .btn{display:none;}
  .article-hero{padding:20px 0 26px;}
  .article-title{font-size:26px;}
  .article-meta{font-size:13px;gap:10px;margin-top:14px;}
  .article-layout{padding:32px 0 44px;}
  .post-body{font-size:15.5px;line-height:1.85;}
  .post-body h2{font-size:20px;margin:32px 0 14px;}
  .post-body h3{font-size:17px;}
  .post-links{grid-template-columns:1fr;margin-top:32px;padding-top:24px;}
  .article-side{grid-template-columns:1fr;}
  .side-cta{grid-column:auto;}
  .article-cta{padding:28px 22px;border-radius:16px;margin-bottom:48px;}
  .article-cta h2{font-size:21px;}
  .article-cta-actions .btn{flex:1 1 100%;}
  .site-footer{padding-top:44px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .back-top{right:16px;bottom:16px;}
  .breadcrumb .current{max-width:200px;}
}
@media (max-width:520px){
  .article-title{font-size:23px;line-height:1.4;}
  .article-meta .meta-divider{display:none;}
  .post-body table{font-size:14px;}
  .post-body th,.post-body td{padding:10px 12px;}
  .post-body pre{font-size:13px;padding:14px 16px;}
}

/* roulang page: category1 */
:root{
  --ink:#12161A;
  --ink-2:#1F272C;
  --accent:#A8D620;
  --accent-hover:#93BE17;
  --accent-soft:#F3F9DF;
  --bg:#FFFFFF;
  --bg-alt:#F7F6F2;
  --line:#E4E2DB;
  --line-strong:#D6D3C9;
  --text:#1C2329;
  --text-body:#3B4247;
  --text-muted:#6E757B;
  --ok:#2E9E6B;
  --warn:#D99A1B;
  --danger:#D0453B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-sm:0 1px 2px rgba(18,22,26,.06);
  --shadow-md:0 8px 24px rgba(18,22,26,.08);
  --shadow-lg:0 16px 40px rgba(18,22,26,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--text)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--ink);color:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
.section-head p{margin-top:12px;color:var(--text-body);max-width:760px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--text-muted);text-transform:uppercase}
.eyebrow::before{content:"";width:4px;height:16px;background:var(--accent);border-radius:2px}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--accent);padding-bottom:3px;white-space:nowrap}
.link-more:hover{border-bottom-width:3px}
.link-more svg{transition:transform .18s ease}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--ink);border:1px solid var(--accent)}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--bg-alt)}
.btn-ghost{border:1px solid rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-light{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-light:hover{border-color:var(--line-strong);background:var(--bg-alt)}
.btn-block{width:100%}

/* ---------- Badge ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);
  background:var(--accent-soft);color:var(--ink);
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge--dark{background:rgba(255,255,255,.12);color:#fff}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.scrolled{box-shadow:var(--shadow-md)}
.header-inner{display:flex;align-items:center;height:68px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:24px;height:24px;color:var(--ink)}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.2px;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:20px}
.nav-link{
  position:relative;font-size:16px;font-weight:500;color:var(--text-body);
  padding:6px 0;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:var(--bg-alt);border:1px solid transparent;border-radius:999px;
  transition:border-color .18s ease,background-color .18s ease;
}
.search-box:focus-within{border-color:var(--accent);background:#fff;box-shadow:0 0 0 2px rgba(168,214,32,.18)}
.search-box svg{flex:none;color:var(--text-muted)}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-muted)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,22,26,.45);z-index:70;
  opacity:0;transition:opacity .18s ease;
}
.drawer-mask.show{opacity:1}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:80%;max-width:360px;z-index:80;
  background:#fff;transform:translateX(100%);transition:transform .2s ease;
  display:flex;flex-direction:column;padding:20px;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-btn);border:1px solid var(--line);font-size:22px;line-height:1;color:var(--ink)}
.drawer-nav{display:flex;flex-direction:column;padding:16px 0;gap:4px}
.drawer-nav a{padding:14px 8px;font-size:16px;font-weight:600;color:var(--text-body);border-radius:var(--radius-btn)}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--ink)}
.drawer-nav a.active{color:var(--ink);background:var(--accent-soft)}
.drawer-search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;background:var(--bg-alt);border-radius:var(--radius-btn);margin-top:8px}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px}
.drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}

/* ---------- Page head ---------- */
.page-head{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:56px 0 60px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:20px}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--text-muted);max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-head-inner{display:flex;align-items:flex-end;justify-content:space-between;gap:40px}
.page-head h1{
  font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.6px;
  max-width:780px;
}
.page-head .lead{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-body);max-width:640px}
.page-head-deco{display:flex;align-items:flex-end;gap:6px;flex:none;padding-bottom:6px}
.page-head-deco i{display:block;width:6px;background:var(--accent);border-radius:3px;opacity:.9}
.page-head-deco i:nth-child(1){height:22px}
.page-head-deco i:nth-child(2){height:38px;opacity:.6}
.page-head-deco i:nth-child(3){height:54px;opacity:.35}

/* ---------- Catalog layout ---------- */
.catalog{padding:56px 0 88px}
.catalog-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start}
.filter-rail{position:sticky;top:96px}
.filter-title{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--text-muted);margin-bottom:16px;text-transform:uppercase}
.filter-list{display:flex;flex-direction:column;gap:8px}
.filter-chip{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 14px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;font-weight:500;color:var(--text-body);background:#fff;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.filter-chip:hover{border-color:var(--line-strong);color:var(--ink)}
.filter-chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.filter-chip .count{font-size:12px;color:var(--text-muted);font-weight:500}
.filter-chip.is-active .count{color:rgba(255,255,255,.7)}
.filter-note{margin-top:24px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff}
.filter-note h4{font-size:14px;font-weight:600;margin-bottom:8px}
.filter-note p{font-size:13px;line-height:1.7;color:var(--text-muted)}
.filter-note .btn{margin-top:14px;height:40px;font-size:14px;padding:0 16px;width:100%}

.model-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.model-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.model-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-media{position:relative;aspect-ratio:16/10;background:var(--bg-alt);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.model-card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;left:14px;top:14px;box-shadow:var(--shadow-sm)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.45;font-weight:700}
.card-points{display:flex;flex-direction:column;gap:6px}
.card-points li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--text-body)}
.card-points li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--accent)}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.card-meta{font-size:13px;color:var(--text-muted)}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--accent);padding-bottom:2px}
.card-link:hover{border-bottom-width:3px}
.card-link svg{transition:transform .18s ease}
.model-card:hover .card-link svg{transform:translateX(4px)}

/* ---------- Stats strip ---------- */
.stats-strip{background:var(--ink);color:#fff;padding:64px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
.stat{padding:0 24px;border-left:1px solid rgba(255,255,255,.14)}
.stat:first-child{border-left:0;padding-left:0}
.stat .num{font-size:40px;font-weight:800;line-height:1.1;color:var(--accent);letter-spacing:-1px}
.stat .num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--accent)}
.stat .label{margin-top:10px;font-size:14px;line-height:1.6;color:rgba(255,255,255,.7)}

/* ---------- Process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;
  border:2px solid var(--accent);color:var(--ink);
  font-size:18px;font-weight:800;margin-bottom:16px;
}
.step h3{font-size:18px;line-height:1.45;margin-bottom:10px}
.step p{font-size:14px;line-height:1.75;color:var(--text-body)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--ink-2)}
.faq-q span:first-child{flex:1}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:transform .18s ease,opacity .18s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a-inner{padding:0 0 24px}
.faq-a-inner p{font-size:15px;line-height:1.85;color:var(--text-body);max-width:760px}

/* ---------- CTA ---------- */
.cta-band{background:var(--accent-soft);padding:80px 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) 480px;gap:64px;align-items:start}
.cta-copy h2{font-size:32px;line-height:1.3;font-weight:800;letter-spacing:-.5px}
.cta-copy p{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-body);max-width:520px}
.cta-contacts{display:flex;flex-direction:column;gap:10px;margin-top:28px}
.cta-contacts span{font-size:15px;color:var(--text-body)}
.cta-contacts strong{color:var(--ink);font-weight:700}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-sm)}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card > p{font-size:14px;color:var(--text-muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;outline:none;transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(168,214,32,.2)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-muted)}
.form-tip{display:none;margin-top:14px;padding:12px 14px;border-radius:var(--radius-btn);background:var(--accent-soft);color:var(--ink);font-size:14px;line-height:1.7}
.form-tip.show{display:block}
.form-hint{margin-top:12px;font-size:13px;line-height:1.6;color:var(--text-muted)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#fff;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col a,.footer-col span{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-mark,.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px}
.footer-col span{margin-bottom:2px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  font-size:13px;color:rgba(255,255,255,.56);
}

/* ---------- Back to top ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:50;
  width:44px;height:44px;border-radius:12px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease,background-color .18s ease;
  box-shadow:var(--shadow-md);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--ink-2)}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .section{padding:72px 0}
  .cta-grid{gap:44px;grid-template-columns:minmax(0,1fr) 420px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px}
  .catalog-grid{grid-template-columns:1fr;gap:24px}
  .filter-rail{position:static;top:auto}
  .filter-list{flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;scrollbar-width:thin}
  .filter-chip{flex:none;white-space:nowrap}
  .filter-note{display:none}
  .model-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0}
  .stat{padding:0 20px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .process-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-head-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .page-head-deco{display:none}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .page-head{padding:36px 0 40px}
  .page-head .lead{font-size:15px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .stats-strip{padding:48px 0}
  .stat .num{font-size:32px}
  .stat .label{font-size:13px}
  .process-grid{grid-template-columns:1fr}
  .cta-band{padding:52px 0}
  .cta-copy h2{font-size:25px}
  .form-card{padding:22px}
  .faq-q{font-size:16px;padding:18px 0}
  .site-footer{padding:52px 0 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .back-top{right:16px;bottom:16px}
  .catalog{padding:36px 0 64px}
}
@media (max-width:519px){
  .header-cta{display:none}
  .model-grid{gap:16px}
  .card-body{padding:18px}
  .stats-grid{grid-template-columns:1fr;gap:0}
  .stat{padding:18px 0;border-left:0;border-top:1px solid rgba(255,255,255,.14)}
  .stat:first-child{border-top:0;padding-top:0}
  .btn{width:100%}
  .header-cta{width:auto}
  .card-foot{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category2 */
:root{
  --ink:#12161A;
  --ink-2:#1F272C;
  --accent:#A8D620;
  --accent-hover:#93BE17;
  --accent-soft:#F3F9DF;
  --bg:#FFFFFF;
  --bg-alt:#F7F6F2;
  --line:#E4E2DB;
  --line-strong:#D6D3C9;
  --text:#1C2329;
  --text-body:#3B4247;
  --text-muted:#6E757B;
  --ok:#2E9E6B;
  --warn:#D99A1B;
  --danger:#D0453B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(18,22,26,.06);
  --sh-2:0 8px 24px rgba(18,22,26,.08);
  --sh-3:0 16px 40px rgba(18,22,26,.12);
  --container:1200px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:520px){
  .container{padding:0 16px}
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex-shrink:0;
}
.logo-mark{width:24px;height:24px;color:var(--ink)}
.logo-text{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.2px;
}
.main-nav{display:flex;align-items:center;gap:6px;margin-right:auto}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text-body);
  border-radius:8px;
  transition:color .16s ease,background .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:-2px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  opacity:0;
  transform:scaleX(.6);
  transition:opacity .16s ease,transform .16s ease;
}
.nav-link:hover{color:var(--ink);background:var(--bg-alt)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  width:220px;
  padding:0 14px;
  background:var(--bg-alt);
  border:1px solid transparent;
  border-radius:999px;
  transition:border-color .16s ease,box-shadow .16s ease,background .16s ease;
}
.search-box svg{width:16px;height:16px;color:var(--text-muted);flex-shrink:0}
.search-box input{
  width:100%;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--text);
}
.search-box input::placeholder{color:var(--text-muted)}
.search-box:focus-within{
  background:#fff;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(168,214,32,.22);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background .16s ease,transform .16s ease,border-color .16s ease,color .16s ease;
}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--bg-alt)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:2px;
  transition:border-color .16s ease;
}
.btn-text:hover{border-bottom-width:3px}
.btn-text svg{width:14px;height:14px;transition:transform .16s ease}
.btn-text:hover svg{transform:translateX(3px)}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  color:var(--ink);
}
.nav-toggle svg{width:20px;height:20px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(18,22,26,.5);
  opacity:0;
  visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
  z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:80%;
  max-width:340px;
  background:#fff;
  z-index:96;
  transform:translateX(100%);
  transition:transform .2s ease;
  display:flex;
  flex-direction:column;
  padding:18px;
  gap:14px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-alt);border:0;border-radius:10px;cursor:pointer;color:var(--ink);
}
.drawer-close svg{width:18px;height:18px}
.drawer .search-box{width:100%}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.drawer-nav a{
  display:block;
  padding:14px 12px;
  font-size:16px;
  font-weight:500;
  color:var(--text);
  border-radius:10px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--ink);font-weight:700;background:var(--accent-soft)}
.drawer-nav a:hover{background:var(--bg-alt)}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- 页头区 ---------- */
.page-hero{
  background:var(--bg-alt);
  padding:48px 0 44px;
  border-bottom:1px solid var(--line);
  position:relative;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--text-muted)}
.page-hero h1{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.6px;
  color:var(--ink);
  max-width:900px;
}
.page-hero-desc{
  margin-top:14px;
  max-width:760px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-body);
}
.accent-bar{
  display:block;
  width:44px;
  height:4px;
  border-radius:2px;
  background:var(--accent);
  margin-top:22px;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.sec-head h2{
  font-size:clamp(24px,2.6vw,30px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.4px;
  padding-left:14px;
  position:relative;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--accent);
}
.sec-head p{
  margin-top:10px;
  padding-left:14px;
  font-size:15px;
  color:var(--text-muted);
  max-width:640px;
}
.sec-head.center{flex-direction:column;align-items:center;text-align:center}
.sec-head.center h2{padding-left:0}
.sec-head.center h2::before{display:none}
.sec-head.center p{padding-left:0}

/* ---------- 指标条 ---------- */
.metrics{background:#fff;border-bottom:1px solid var(--line)}
.metrics-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.metric{
  padding:32px 22px;
  border-left:1px solid var(--line);
}
.metric:first-child{border-left:0;padding-left:0}
.metric-num{
  display:block;
  font-size:36px;
  font-weight:800;
  line-height:1.1;
  letter-spacing:-1px;
  color:var(--ink);
}
.metric-num em{
  font-style:normal;
  font-size:16px;
  font-weight:700;
  margin-left:2px;
  color:var(--text-muted);
}
.metric-label{
  display:block;
  margin-top:8px;
  font-size:14px;
  line-height:1.6;
  color:var(--text-muted);
}

/* ---------- 深色状态带 ---------- */
.status-band{
  position:relative;
  background:var(--ink);
  color:#fff;
  overflow:hidden;
}
.status-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.12;
  pointer-events:none;
}
.status-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1fr 1.35fr;
  gap:44px;
  align-items:center;
  padding-top:56px;
  padding-bottom:56px;
}
.status-lead h2{
  font-size:24px;
  font-weight:700;
  line-height:1.35;
  color:#fff;
  display:flex;
  align-items:center;
  gap:10px;
}
.status-dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--accent);
  flex-shrink:0;
}
.status-lead p{
  margin-top:12px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.68);
  max-width:420px;
}
.status-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:rgba(255,255,255,.14);
  border-radius:12px;
  overflow:hidden;
}
.status-list li{
  background:var(--ink-2);
  padding:20px 22px;
}
.status-list span{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.62);
}
.status-list strong{
  display:block;
  margin-top:6px;
  font-size:20px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:-.3px;
}

/* ---------- 服务卡 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.svc-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.svc-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:var(--line-strong);
}
.card-media{
  aspect-ratio:16/10;
  background:var(--bg-alt);
  overflow:hidden;
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .2s ease;
}
.svc-card:hover .card-media img{transform:scale(1.03)}
.card-body{
  padding:22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.badge{
  align-self:flex-start;
  display:inline-block;
  padding:4px 10px;
  background:var(--accent-soft);
  color:var(--ink);
  font-size:12px;
  font-weight:600;
  border-radius:var(--r-badge);
}
.card-body h3{
  font-size:18px;
  line-height:1.45;
  font-weight:700;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-body);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body .btn-text{margin-top:auto;align-self:flex-start}

/* ---------- 流程步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px 24px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.step:hover{border-color:var(--line-strong);box-shadow:var(--sh-1)}
.step::before{
  content:"";
  position:absolute;
  top:0;
  left:22px;
  width:32px;
  height:3px;
  border-radius:0 0 3px 3px;
  background:var(--accent);
}
.step-num{
  display:block;
  font-size:26px;
  font-weight:800;
  letter-spacing:-1px;
  color:var(--ink);
  line-height:1.2;
}
.step h3{
  margin-top:10px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  line-height:1.45;
}
.step p{
  margin-top:8px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-body);
}

/* ---------- 价目表 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
}
.price-table{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
}
.price-table thead th{
  background:var(--bg-alt);
  color:var(--ink);
  font-weight:700;
  text-align:left;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.price-table td{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  color:var(--text-body);
  line-height:1.7;
}
.price-table tbody tr:last-child td{border-bottom:0}
.price-table tbody tr:hover td{background:#FBFBF8}
.price-table .col-name{font-weight:600;color:var(--ink);white-space:nowrap}
.price-table .col-price{color:var(--ink);font-weight:700;white-space:nowrap}
.table-note{
  margin-top:16px;
  font-size:13px;
  line-height:1.8;
  color:var(--text-muted);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.55;
  transition:color .16s ease;
}
.faq-q:hover{color:#000}
.faq-sign{
  flex-shrink:0;
  width:22px;
  height:22px;
  position:relative;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--accent-hover);
  border-radius:2px;
  transition:transform .18s ease,opacity .18s ease;
}
.faq-sign::before{left:0;right:0;top:10px;height:2px}
.faq-sign::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.open .faq-sign::after{opacity:0;transform:scaleY(.4)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-body);
  max-width:760px;
}
.faq-item.open .faq-a{max-height:360px}

/* ---------- CTA 区 ---------- */
.cta-section{background:var(--accent-soft)}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.cta-copy h2{
  font-size:clamp(24px,2.8vw,32px);
  line-height:1.3;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.4px;
}
.cta-copy p{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-body);
  max-width:480px;
}
.cta-points{
  margin-top:24px;
  display:grid;
  gap:12px;
}
.cta-points li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  color:var(--text);
  line-height:1.7;
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--ink);
}
.cta-contact{
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid rgba(18,22,26,.14);
  display:flex;
  flex-wrap:wrap;
  gap:10px 32px;
  font-size:14px;
  color:var(--text-body);
}
.cta-contact strong{color:var(--ink);font-weight:700}

.cta-form{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
}
.cta-form h3{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:6px;
}
.cta-form .form-tip{
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:20px;
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
}
.field input,
.field select,
.field textarea{
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--text);
  background:#fff;
  outline:none;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{
  height:96px;
  padding:12px 14px;
  resize:vertical;
  line-height:1.7;
}
.field input::placeholder,
.field textarea::placeholder{color:#A6ACB0}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(168,214,32,.22);
}
.cta-form .btn{width:100%}
.form-tip-bottom{
  margin-top:12px;
  font-size:13px;
  line-height:1.7;
  color:var(--text-muted);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#fff;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-mark{color:var(--accent)}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
  max-width:320px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col a,
.footer-col span{
  display:block;
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.72);
  margin-bottom:10px;
  transition:color .16s ease;
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:20px;
  bottom:20px;
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--ink);
  color:#fff;
  border:0;
  border-radius:12px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
  z-index:80;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top svg{width:18px;height:18px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .section{padding:72px 0}
}
@media (max-width:1099px){
  .search-box{width:170px}
  .nav-link{padding:8px 9px;font-size:14px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .main-nav{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:60px;gap:16px}
  .header-actions{margin-left:auto}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .metric{padding:26px 20px}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .metric:nth-child(3),
  .metric:nth-child(4){border-top:1px solid var(--line)}
  .status-inner{grid-template-columns:1fr;gap:28px;padding-top:44px;padding-bottom:44px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:52px 0}
  .page-hero{padding:34px 0 32px}
  .sec-head{margin-bottom:28px}
  .sec-head h2{padding-left:12px}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .cta-form{padding:22px}
  .price-table{font-size:13px}
  .price-table thead th,
  .price-table td{padding:12px 14px}
  .table-wrap{overflow-x:auto}
  .price-table{min-width:560px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .metric-num{font-size:30px}
  .status-list{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:18px 2px}
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .sec-head .btn-text{font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}