/* roulang page: index */
:root{
  --c-primary:#12544C;
  --c-primary-deep:#0C3A36;
  --c-primary-100:#E4EFEB;
  --c-accent:#C96A2E;
  --c-accent-100:#FBEEDF;
  --c-ink:#17201E;
  --c-ink-2:#4A5654;
  --c-ink-3:#7C8A87;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4E1D9;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(23,32,30,.05),0 6px 20px rgba(23,32,30,.06);
  --sh-2:0 10px 28px rgba(23,32,30,.10);
  --bs-primary:#12544C;
  --bs-body-color:#17201E;
  --bs-body-bg:#F7F5F0;
  --bs-border-color:#E4E1D9;
  --bs-border-radius:14px;
  --bs-link-color:#12544C;
  --bs-link-hover-color:#C96A2E;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;line-height:1.9;color:var(--c-ink);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
h1,h2{font-family:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;font-weight:700;margin:0;color:var(--c-ink);}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.3;letter-spacing:.3px;}
h2{font-size:30px;line-height:1.4;}
h3{font-size:20px;line-height:1.5;font-weight:600;margin:0;font-family:inherit;}
h4{font-size:17px;line-height:1.5;font-weight:600;margin:0;font-family:inherit;}
p{margin:0 0 1.25em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
.sec{padding:84px 0;}
.sec-line{border-top:1px solid var(--c-line);}
.sec-tint{background:var(--c-surface);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.sec-num{display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--c-primary);border:1px solid var(--c-line);border-radius:6px;padding:2px 8px;margin-bottom:14px;background:var(--c-primary-100);}
.sec-lead{max-width:640px;color:var(--c-ink-2);font-size:15px;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(247,245,240,.94);border-bottom:1px solid var(--c-line);transition:box-shadow .22s ease,background .22s ease;}
.site-header.is-stuck{background:#fff;box-shadow:0 6px 20px rgba(23,32,30,.06);}
.nav-top{display:flex;align-items:center;gap:22px;height:72px;transition:height .22s ease;}
.site-header.is-stuck .nav-top{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-primary-100);display:flex;align-items:center;justify-content:center;}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.5px;color:var(--c-primary);white-space:nowrap;}
.nav-search{flex:1 1 auto;max-width:520px;min-width:300px;display:flex;align-items:center;height:44px;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding-left:16px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,84,76,.12);}
.nav-search svg{flex:0 0 auto;color:var(--c-ink-3);}
.nav-search input{flex:1 1 auto;min-width:0;border:0;outline:0;background:transparent;font-size:15px;color:var(--c-ink);height:100%;padding:0 8px;}
.nav-search input::placeholder{color:var(--c-ink-3);opacity:.85;}
.nav-search button{flex:0 0 auto;border:0;height:100%;padding:0 22px;background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s ease;}
.nav-search button:hover{background:#0E463F;}
.nav-cta{flex:0 0 auto;font-size:15px;font-weight:600;color:var(--c-primary);padding:10px 4px;position:relative;}
.nav-cta::after{content:"";position:absolute;left:4px;right:4px;bottom:6px;height:2px;background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.nav-cta:hover::after{transform:scaleX(1);}
.nav-icon-btn{display:none;flex:0 0 auto;width:42px;height:42px;align-items:center;justify-content:center;background:#fff;border:1px solid var(--c-line);border-radius:10px;color:var(--c-primary);cursor:pointer;}
.nav-bottom{height:48px;display:flex;align-items:center;justify-content:center;border-top:1px solid var(--c-line);}
.nav-bottom ul{display:flex;gap:36px;list-style:none;}
.nav-bottom a{position:relative;display:inline-block;font-size:15px;color:var(--c-ink-2);padding:12px 0;}
.nav-bottom a::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;border-radius:2px;background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.nav-bottom a:hover{color:var(--c-primary);}
.nav-bottom a:hover::after{transform:scaleX(1);}
.nav-bottom a.active{color:var(--c-primary);font-weight:600;}
.nav-bottom a.active::after{background:var(--c-primary);transform:scaleX(1);}
.mobile-search,.mobile-drawer{display:none;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-btn);padding:12px 26px;font-size:15px;font-weight:600;line-height:1.4;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#B85F28;transform:translateY(-1px);box-shadow:var(--sh-2);color:#fff;}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-100);transform:translateY(-1px);color:var(--c-primary);}
.btn-solid{background:var(--c-primary);color:#fff;}
.btn-solid:hover{background:#0E463F;color:#fff;transform:translateY(-1px);}
.btn-lg{padding:14px 30px;font-size:16px;}
.link-arrow{color:var(--c-primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.link-arrow:hover{color:var(--c-accent);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 62px;background:var(--c-bg);}
.hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(18,84,76,.05) 0 1px,transparent 1px 22px);pointer-events:none;}
.hero::after{content:"";position:absolute;top:-60px;right:-120px;width:420px;height:320px;background:var(--c-primary);opacity:.06;transform:skewX(-18deg);}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.5px;color:var(--c-primary);background:var(--c-primary-100);border-radius:6px;padding:5px 12px;margin-bottom:20px;}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:520px;margin-bottom:28px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px;}
.hero-stats{display:flex;align-items:stretch;gap:0;flex-wrap:wrap;}
.stat-block{flex:1 1 150px;padding:0 22px;border-left:1px solid var(--c-line);}
.stat-block:first-child{border-left:0;padding-left:0;}
.stat-block strong{display:block;font-size:26px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.3;font-family:"Noto Serif SC","Songti SC",serif;}
.stat-block span{font-size:13px;color:var(--c-ink-3);line-height:1.7;display:block;}
.hero-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--sh-2);}
.hero-media img{width:100%;height:420px;object-fit:cover;border-radius:16px;}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,84,76,.10) 0%,rgba(18,84,76,0) 45%,rgba(12,58,54,.55) 100%);}
.hero-media figcaption{position:absolute;left:20px;bottom:16px;z-index:2;color:#fff;font-size:13px;letter-spacing:.3px;}

/* ---------- 痛点 ---------- */
.pain-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;}
.pain-item{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--c-line);}
.pain-item .num{font-family:"Noto Serif SC","Songti SC",serif;font-size:30px;font-weight:700;color:var(--c-accent);opacity:.9;line-height:1;min-width:52px;font-variant-numeric:tabular-nums;}
.pain-item h3{margin-bottom:6px;font-size:18px;}
.pain-item p{font-size:15px;color:var(--c-ink-2);margin:0;}

/* ---------- 解决方案交替 ---------- */
.solution-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:40px 0;border-top:1px solid var(--c-line);}
.solution-row:first-of-type{border-top:0;padding-top:0;}
.solution-row.reverse .solution-media{order:-1;}
.solution-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);background:#fff;border:1px solid var(--c-line);}
.solution-media img{width:100%;height:300px;object-fit:cover;}
.solution-copy h3{font-size:24px;margin-bottom:12px;font-family:"Noto Serif SC","Songti SC",serif;}
.solution-copy p{color:var(--c-ink-2);font-size:15px;margin-bottom:16px;}
.point-list{list-style:none;margin:0 0 18px;}
.point-list li{position:relative;padding-left:18px;font-size:15px;color:var(--c-ink-2);margin-bottom:8px;}
.point-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;background:var(--c-primary);}
.solution-band{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);}
.solution-band .band-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:20px;}
.band-item{border-top:2px solid var(--c-accent);padding-top:14px;}
.band-item h4{margin-bottom:6px;}
.band-item p{font-size:14px;color:var(--c-ink-2);margin:0;}

/* ---------- 成果深色区 ---------- */
.outcome{background:var(--c-primary-deep);color:#fff;border-top:1px solid var(--c-accent);position:relative;overflow:hidden;}
.outcome::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(60deg,rgba(255,255,255,.05) 0 1px,transparent 1px 26px);pointer-events:none;}
.outcome-inner{position:relative;display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.outcome h2{color:#fff;}
.outcome .sec-lead{color:rgba(255,255,255,.72);}
.outcome-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.outcome-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:22px;}
.outcome-card strong{display:block;font-size:44px;line-height:1.15;font-weight:700;font-variant-numeric:tabular-nums;color:#fff;font-family:"Noto Serif SC","Songti SC",serif;}
.outcome-card strong em{font-style:normal;font-size:18px;margin-left:4px;color:var(--c-accent-100);}
.outcome-card span{display:block;font-size:13px;color:rgba(255,255,255,.68);margin-top:6px;}

/* ---------- 资讯卡片 ---------- */
.post-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;height:100%;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary);}
.post-card:hover .post-title a{color:var(--c-primary);}
.post-thumb{display:block;overflow:hidden;}
.post-thumb img{width:100%;height:196px;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.badge-cat{align-self:flex-start;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-100);border-radius:6px;padding:3px 10px;line-height:1.6;}
.post-title{font-size:18px;line-height:1.55;font-weight:600;}
.post-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-excerpt{font-size:14px;color:var(--c-ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-3);border-top:1px solid var(--c-line);padding-top:12px;}
.row .col-lg-4:first-child .post-card,.row .col-md-6:first-child .post-card{border-color:var(--c-primary);}
.empty-state{background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-card);padding:56px 24px;text-align:center;color:var(--c-ink-3);}
.empty-state svg{color:rgba(18,84,76,.3);margin-bottom:12px;}
.empty-state p{margin:0;font-size:15px;}

/* ---------- 证言 ---------- */
.voice-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.voice-main{background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);border-radius:var(--r-card);padding:34px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:18px;}
.voice-main .quote-mark{font-family:"Noto Serif SC",serif;font-size:52px;line-height:1;color:var(--c-primary-100);}
.voice-main blockquote{margin:0;font-size:19px;line-height:1.9;color:var(--c-ink);}
.voice-person{font-size:14px;color:var(--c-ink-3);}
.voice-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.voice-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;}
.voice-card p{font-size:15px;color:var(--c-ink-2);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease;padding-left:16px;}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--c-accent);}
.faq-item summary{list-style:none;cursor:pointer;padding:22px 46px 22px 0;font-size:17px;font-weight:600;position:relative;color:var(--c-ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--c-primary);transition:transform .22s ease;}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-body{padding:0 40px 22px 0;font-size:15px;color:var(--c-ink-2);}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.trust-list{list-style:none;margin-top:20px;}
.trust-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink-2);}
.trust-list li svg{flex:0 0 auto;margin-top:6px;color:var(--c-primary);}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.field .req{color:var(--c-accent);margin-left:2px;}
.field input,.field textarea{width:100%;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);padding:0 14px;font-size:15px;color:var(--c-ink);background:#fff;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease;}
.field textarea{height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.field input:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,84,76,.12);outline:0;}
.field input::placeholder,.field textarea::placeholder{color:var(--c-ink-3);}
.form-hint{font-size:13px;color:var(--c-ink-3);margin:0;}
.form-submit{width:100%;justify-content:center;margin-top:6px;}

/* ---------- 尾部 CTA ---------- */
.tail-cta{background:var(--c-primary);border-radius:18px;padding:56px;position:relative;overflow:hidden;color:#fff;display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;}
.tail-cta::after{content:"";position:absolute;right:-80px;bottom:-100px;width:320px;height:320px;background:rgba(255,255,255,.06);border-radius:50%;}
.tail-cta h2{color:#fff;position:relative;}
.tail-cta p{color:rgba(255,255,255,.75);margin:12px 0 0;font-size:15px;position:relative;}
.tail-cta .cta-actions{position:relative;display:flex;justify-content:flex-end;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:#fff;padding:64px 0 0;margin-top:84px;}
.footer-grid{display:grid;grid-template-columns:2fr 1.2fr 1.2fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.68);margin:16px 0 0;line-height:1.9;}
.footer-brand .contact{font-size:14px;color:rgba(255,255,255,.8);margin-top:14px;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:#fff;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:8px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);line-height:1.9;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-bottom span{font-size:13px;color:rgba(255,255,255,.6);}
.back-top{background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;border-radius:10px;padding:7px 14px;cursor:pointer;transition:background .2s ease;}
.back-top:hover{background:rgba(255,255,255,.12);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .outcome-inner{grid-template-columns:1fr;gap:32px;}
  .voice-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px;}
}
@media (max-width:991px){
  .nav-search{display:none;}
  .nav-cta{display:none;}
  .nav-icon-btn{display:inline-flex;}
  .nav-bottom{display:none;}
  .nav-top{height:64px;gap:12px;}
  .brand{margin-right:auto;}
  .mobile-search{display:none;border-top:1px solid var(--c-line);padding:12px 0;}
  .mobile-search.open{display:block;}
  .mobile-search form{display:flex;height:44px;border:1px solid var(--c-line);border-radius:999px;background:#fff;padding-left:16px;overflow:hidden;}
  .mobile-search input{flex:1;border:0;outline:0;font-size:15px;}
  .mobile-search button{border:0;background:var(--c-primary);color:#fff;padding:0 20px;font-size:15px;font-weight:600;}
  .mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;}
  .mobile-drawer.open{display:block;}
  .mobile-drawer ul{list-style:none;}
  .mobile-drawer a{display:flex;align-items:center;height:48px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-ink-2);}
  .mobile-drawer a.active{color:var(--c-primary);font-weight:600;}
  .hero{padding:52px 0 48px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-media img{height:300px;}
  .sec{padding:64px 0;}
  .pain-list{grid-template-columns:1fr;gap:0;}
  .solution-row{grid-template-columns:1fr;gap:28px;padding:32px 0;}
  .solution-row.reverse .solution-media{order:0;}
  .solution-band .band-grid{grid-template-columns:1fr;}
  .consult-grid{grid-template-columns:1fr;gap:32px;}
  .tail-cta{grid-template-columns:1fr;padding:40px;}
  .tail-cta .cta-actions{justify-content:flex-start;}
  .site-footer{margin-top:64px;}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px;}
  .sec{padding:48px 0;}
  .sec-head{margin-bottom:28px;}
  h2{font-size:26px;}
  .hero-stats{flex-direction:column;gap:20px;}
  .stat-block{border-left:0;padding:0;flex:1 1 auto;}
  .outcome-card strong{font-size:36px;}
  .form-row{grid-template-columns:1fr;}
  .solution-copy h3{font-size:20px;}
  .voice-main{padding:24px;}
  .voice-main blockquote{font-size:17px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .btn{width:100%;justify-content:center;}
  .tail-cta .cta-actions{width:100%;}
  .hero-actions .btn{width:100%;}
  .form-card{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --c-primary:#12544C;
  --c-primary-deep:#0C3A36;
  --c-primary-100:#E4EFEB;
  --c-accent:#C96A2E;
  --c-accent-100:#FBEEDF;
  --c-ink:#17201E;
  --c-ink-2:#4A5654;
  --c-ink-3:#7C8A87;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4E1D9;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,32,30,.05),0 6px 20px rgba(23,32,30,.06);
  --sh-2:0 10px 28px rgba(23,32,30,.10);
  --sp-section:84px;

  --bs-body-bg:var(--c-bg);
  --bs-body-color:var(--c-ink-2);
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:18,84,76;
  --bs-border-color:var(--c-line);
  --bs-border-radius:var(--r-btn);
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-accent);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-2);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:600;}
h1,h2{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;}
p{margin:0 0 1.25em;}
ul,ol{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (max-width:767px){.container{padding-left:18px;padding-right:18px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-top{background:var(--c-surface);}
.nav-top-inner{
  display:flex;align-items:center;gap:20px;height:72px;
  transition:height .22s ease;
}
.site-header.scrolled .nav-top-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{
  font-size:19px;font-weight:700;letter-spacing:.5px;color:var(--c-ink);white-space:nowrap;
}
.brand-text:hover{color:var(--c-primary);}
.nav-search{
  position:relative;display:flex;align-items:center;flex:1 1 44%;min-width:320px;max-width:620px;
  height:44px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:var(--c-bg);padding-left:42px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:hover{border-color:var(--c-primary);background:#fff;}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px rgba(18,84,76,.12);}
.nav-search .search-icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--c-ink-3);}
.nav-search input{
  flex:1;height:100%;border:0;background:transparent;font-size:15px;color:var(--c-ink);
  padding:0 12px;outline:none;
}
.nav-search input::placeholder{color:var(--c-ink-3);}
.nav-search button{
  height:100%;padding:0 22px;border:0;background:var(--c-primary);color:#fff;
  font-size:15px;font-weight:500;cursor:pointer;transition:background .2s ease;
}
.nav-search button:hover{background:#0E463F;}
.nav-cta{
  flex:0 0 auto;padding:10px 20px;border:1px solid var(--c-primary);border-radius:var(--r-btn);
  color:var(--c-primary);font-size:15px;font-weight:500;transition:all .2s ease;white-space:nowrap;
}
.nav-cta:hover{background:var(--c-primary);color:#fff;}
.nav-icon-btn{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;color:var(--c-ink);
}
.nav-icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);}
.nav-bottom{border-top:1px solid var(--c-line);background:var(--c-surface);}
.nav-bottom ul{
  display:flex;align-items:center;justify-content:center;gap:38px;list-style:none;
  margin:0 auto;padding:0;height:48px;max-width:1200px;
}
.nav-bottom a{
  display:inline-block;line-height:48px;font-size:15px;color:var(--c-ink-2);
  border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.nav-bottom a:hover{color:var(--c-primary);}
.nav-bottom a.active{color:var(--c-primary);font-weight:600;border-bottom-color:var(--c-primary);}

.nav-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;}
.nav-drawer.open{display:block;}
.nav-drawer ul{list-style:none;margin:0;padding:0;}
.nav-drawer li{border-bottom:1px solid var(--c-line);}
.nav-drawer a{display:block;height:48px;line-height:48px;font-size:15px;color:var(--c-ink-2);}
.nav-drawer a.active{color:var(--c-primary);font-weight:600;}

@media (max-width:991px){
  .nav-top-inner{height:60px;gap:12px;}
  .site-header.scrolled .nav-top-inner{height:60px;}
  .nav-cta{display:none;}
  .nav-icon-btn{display:inline-flex;}
  .nav-bottom{display:none;}
  .nav-search{
    position:absolute;left:18px;right:18px;top:64px;min-width:0;max-width:none;
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
    box-shadow:var(--sh-1);z-index:5;
  }
  .nav-search.open{opacity:1;visibility:visible;transform:translateY(0);}
  .brand-text{font-size:17px;}
}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-size:13px;color:var(--c-ink-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--c-line);}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .current{color:var(--c-primary);}

/* ---------- 文章头 ---------- */
.article-head{padding:26px 0 36px;border-bottom:1px solid var(--c-line);}
.badge-cat{
  display:inline-block;font-size:13px;line-height:1;padding:7px 11px;border-radius:6px;
  background:var(--c-primary-100);color:var(--c-primary);font-weight:500;
}
.article-head h1{
  font-size:clamp(24px,3.2vw,36px);line-height:1.35;margin:16px 0 18px;max-width:900px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);}
.meta-line span.dot{width:4px;height:4px;border-radius:50%;background:var(--c-line);display:inline-block;}

/* ---------- 布局 ---------- */
.article-layout{padding:44px 0 0;}
.article-main{max-width:800px;}
.article-cover{margin:0 0 34px;}
.article-cover img{width:100%;border-radius:16px;border:1px solid var(--c-line);}
.article-cover figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px;}

.article-body{font-size:17px;line-height:1.9;color:var(--c-ink-2);}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;font-size:28px;line-height:1.4;color:var(--c-ink);
  margin:2em 0 .8em;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  background:var(--c-accent);border-radius:2px;
}
.article-body h3{font-size:22px;line-height:1.5;margin:1.6em 0 .6em;font-weight:600;}
.article-body h4{font-size:17px;line-height:1.5;margin:1.4em 0 .5em;font-weight:600;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.25em;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  margin:1.5em 0;padding:20px 22px;background:var(--c-bg);
  border-left:4px solid var(--c-primary);border-radius:0 10px 10px 0;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{max-width:100%;border-radius:12px;margin:1.5em auto;}
.article-body figure{margin:1.5em 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 12px;text-align:left;vertical-align:top;}
.article-body th{background:var(--c-primary-100);color:var(--c-ink);font-weight:600;}
.article-body code{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;
  background:#EFEDE6;padding:2px 6px;border-radius:4px;color:var(--c-ink);
}
.article-body pre{background:#16211F;color:#E9EFEC;padding:18px 20px;border-radius:12px;overflow:auto;margin:1.5em 0;}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-accent);}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--r-card);
  padding:52px 24px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state svg{opacity:.5;margin-bottom:16px;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--c-ink-3);font-size:15px;margin-bottom:20px;}
.btn-outline{
  display:inline-block;padding:12px 26px;border:1px solid var(--c-primary);border-radius:var(--r-btn);
  color:var(--c-primary);font-size:15px;font-weight:500;transition:all .2s ease;
}
.btn-outline:hover{background:var(--c-primary);color:#fff;transform:translateY(-1px);}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:120px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.side-title{font-size:17px;margin-bottom:14px;font-family:inherit;font-weight:600;}
.side-nav{list-style:none;margin:0;padding:0;}
.side-nav li{border-bottom:1px solid var(--c-line);}
.side-nav li:last-child{border-bottom:0;}
.side-nav a{display:block;padding:11px 0;font-size:15px;color:var(--c-ink-2);}
.side-nav a:hover{color:var(--c-primary);padding-left:4px;}
.side-nav a.active{color:var(--c-primary);font-weight:600;}
.side-hot{list-style:none;margin:0;padding:0;}
.side-hot li{padding:10px 0;border-bottom:1px solid var(--c-line);}
.side-hot li:last-child{border-bottom:0;padding-bottom:0;}
.side-hot a{font-size:15px;color:var(--c-ink-2);display:block;line-height:1.6;}
.side-hot a:hover{color:var(--c-primary);}
.side-hot span{display:block;font-size:13px;color:var(--c-ink-3);margin-top:4px;}
.side-consult{
  background:var(--c-primary);color:#fff;border-radius:var(--r-card);padding:24px 20px;
}
.side-consult h3{color:#fff;font-size:18px;margin-bottom:10px;font-family:inherit;}
.side-consult p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.86);margin-bottom:18px;}
.side-consult .btn-accent{
  display:inline-block;background:var(--c-accent);color:#fff;padding:11px 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:500;transition:all .2s ease;
}
.side-consult .btn-accent:hover{background:#B65F26;transform:translateY(-1px);color:#fff;}

@media (max-width:1199px){
  .side-sticky{position:static;top:auto;}
}
@media (max-width:991px){
  .article-layout{padding-top:32px;}
  .article-main{max-width:none;}
}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
.section-head h2{font-size:30px;line-height:1.4;}
.section-head .link-more{font-size:15px;color:var(--c-primary);position:relative;}
.section-head .link-more::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--c-accent);transition:width .22s ease;}
.section-head .link-more:hover::after{width:100%;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary);}
.related-card h4{font-size:17px;line-height:1.5;margin:12px 0 8px;color:var(--c-ink);transition:color .2s ease;}
.related-card:hover h4{color:var(--c-primary);}
.related-card p{font-size:14px;color:var(--c-ink-3);margin:0;line-height:1.8;}
.back-links{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:24px;border-top:1px solid var(--c-line);}
.back-links a{font-size:15px;color:var(--c-primary);}
.back-links a:hover{color:var(--c-accent);}
@media (max-width:991px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575px){.related-grid{grid-template-columns:1fr;}}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  margin:84px 0 84px;background:var(--c-primary);border-radius:18px;padding:56px;
  position:relative;overflow:hidden;color:#fff;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.10),rgba(255,255,255,0) 68%);
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.4;margin-bottom:14px;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.88);max-width:620px;margin-bottom:26px;position:relative;z-index:1;}
.cta-band .btn-accent{
  display:inline-block;background:var(--c-accent);color:#fff;padding:13px 30px;
  border-radius:var(--r-btn);font-size:16px;font-weight:500;transition:all .2s ease;position:relative;z-index:1;
}
.cta-band .btn-accent:hover{background:#B65F26;transform:translateY(-1px);color:#fff;}
.cta-note{margin-top:16px;font-size:14px;color:rgba(255,255,255,.75);position:relative;z-index:1;}
@media (max-width:767px){.cta-band{padding:34px 22px;margin:56px 0;border-radius:14px;}.cta-band h2{font-size:23px;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.82);padding:64px 0 0;margin-top:0;}
.site-footer .footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;
}
.footer-brand .brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand .brand-text{color:#fff;font-size:19px;font-weight:700;letter-spacing:.5px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0 0 10px;max-width:340px;}
.footer-brand .contact{font-size:13px;color:rgba(255,255,255,.6);}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:6px;}
.footer-col a{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0;font-size:13px;color:rgba(255,255,255,.6);
}
.back-top{
  background:transparent;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.82);
  font-size:13px;padding:7px 16px;border-radius:var(--r-btn);cursor:pointer;transition:all .2s ease;
}
.back-top:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.6);}
@media (max-width:991px){.site-footer .footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:575px){.site-footer .footer-grid{grid-template-columns:1fr;gap:26px;}}

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

/* roulang page: category1 */
:root{
  --c-primary:#12544C;
  --c-primary-deep:#0C3A36;
  --c-primary-100:#E4EFEB;
  --c-accent:#C96A2E;
  --c-accent-100:#FBEEDF;
  --c-ink:#17201E;
  --c-ink-2:#4A5654;
  --c-ink-3:#7C8A87;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4E1D9;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-badge:6px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(23,32,30,.05), 0 6px 20px rgba(23,32,30,.06);
  --sh-2:0 10px 28px rgba(23,32,30,.10);
  --t:.22s ease;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",var(--font-sans);

  --bs-primary:#12544C;
  --bs-body-color:#17201E;
  --bs-body-bg:#F7F5F0;
  --bs-border-color:#E4E1D9;
  --bs-border-radius:10px;
  --bs-font-sans-serif:var(--font-sans);
  --bs-link-color:#12544C;
  --bs-link-hover-color:#C96A2E;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-accent)}
button{font-family:inherit}
ul,ol{margin:0}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--c-ink)}
h1{font-family:var(--font-serif);font-size:clamp(30px,4.6vw,52px);line-height:1.3;font-weight:700}
h2{font-family:var(--font-serif);font-size:30px;line-height:1.4;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:84px 0}
.section--line{border-top:1px solid var(--c-line)}
.section--soft{background:var(--c-primary-100)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin-bottom:12px}
.section-sub{color:var(--c-ink-2);font-size:16px;line-height:1.9;margin:0}
.sec-num{display:inline-block;font-size:13px;font-weight:600;letter-spacing:2px;color:var(--c-primary);border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--r-badge);padding:2px 9px;margin-bottom:14px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:12px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:background var(--t),color var(--t),transform var(--t),border-color var(--t),box-shadow var(--t);
  text-align:center;line-height:1.5;
}
.btn-cta{background:var(--c-accent);color:#fff !important;border-color:var(--c-accent)}
.btn-cta:hover{background:#B85E26;border-color:#B85E26;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--c-primary) !important;border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-100);color:var(--c-primary);transform:translateY(-1px)}
.btn-primary{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff}
.btn-link-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--c-primary);position:relative;padding-bottom:2px;
}
.btn-link-text::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-accent);transition:width var(--t)}
.btn-link-text:hover{color:var(--c-primary)}
.btn-link-text:hover::after{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn:disabled{opacity:.62;cursor:not-allowed;transform:none}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow var(--t)}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(23,32,30,.07)}
.nav-top{height:72px;display:flex;align-items:center;transition:height var(--t)}
.site-header.is-scrolled .nav-top{height:60px}
.nav-top-inner{display:flex;align-items:center;gap:22px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:var(--r-btn);background:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.5px;color:var(--c-ink);white-space:nowrap}
.search-form{
  position:relative;display:flex;align-items:center;flex:1 1 auto;min-width:320px;max-width:560px;height:44px;
  border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-surface);padding-left:44px;
  transition:border-color var(--t),box-shadow var(--t);
}
.search-form:hover{border-color:#CFD8D5}
.search-form:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,84,76,.12)}
.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--c-ink-3)}
.search-form input{
  flex:1 1 auto;border:0;outline:none;background:transparent;height:100%;
  font-size:15px;color:var(--c-ink);padding:0 10px 0 0;font-family:inherit;
}
.search-form input::placeholder{color:#9AA6A3}
.search-form input:focus::placeholder{color:#B8C1BF}
.search-btn{
  height:36px;margin-right:4px;padding:0 20px;border:0;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background var(--t)
}
.search-btn:hover{background:var(--c-primary-deep)}
.nav-cta{flex:0 0 auto;font-size:15px;font-weight:600;color:var(--c-primary);white-space:nowrap;border-bottom:2px solid transparent;transition:border-color var(--t)}
.nav-cta:hover{border-color:var(--c-accent)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface);align-items:center;justify-content:center;cursor:pointer}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-100)}
.search-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface);align-items:center;justify-content:center;cursor:pointer}
.search-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-100)}
.nav-bottom{border-top:1px solid var(--c-line)}
.nav-bottom ul{display:flex;align-items:center;justify-content:center;gap:30px;list-style:none;padding:0;margin:0;height:48px}
.nav-bottom a{
  position:relative;display:inline-flex;align-items:center;height:48px;font-size:15px;color:var(--c-ink-2);
  transition:color var(--t);
}
.nav-bottom a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-accent);transform:scaleX(0);transition:transform var(--t)}
.nav-bottom a:hover{color:var(--c-primary)}
.nav-bottom a.active{color:var(--c-primary);font-weight:600}
.nav-bottom a.active::after{transform:scaleX(1)}
.mobile-search{display:none;border-top:1px solid var(--c-line);padding:12px 0}
.mobile-search .search-form{max-width:none;min-width:0;width:100%}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:var(--c-surface)}
.mobile-drawer ul{list-style:none;padding:0;margin:0}
.mobile-drawer a{display:block;height:48px;line-height:48px;font-size:15px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line)}
.mobile-drawer a.active{color:var(--c-primary);font-weight:600}
.mobile-drawer .drawer-cta{padding:16px 0 20px}

/* 面包屑 */
.crumb{font-size:13px;color:var(--c-ink-3);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb a{color:var(--c-ink-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-ink-3)}
.crumb .current{color:var(--c-primary);font-weight:600}

/* Hero */
.hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--c-line);
  background:var(--c-bg) url('/assets/images/backpic/back-2.webp') right center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(247,245,240,.98) 0%,rgba(247,245,240,.95) 46%,rgba(247,245,240,.62) 100%);
}
.hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;
  background:radial-gradient(circle at center,rgba(18,84,76,.07),rgba(18,84,76,0) 68%);
}
.hero-inner{position:relative;z-index:2;padding:40px 0 64px;max-width:780px}
.hero h1{margin:18px 0 16px}
.hero-lead{font-size:17px;color:var(--c-ink-2);line-height:1.9;max-width:660px;margin:0}
.hero-stats{display:flex;flex-wrap:wrap;align-items:flex-start;margin-top:38px;gap:0}
.hero-stat{padding-right:28px}
.hero-stat + .hero-stat{border-left:1px solid var(--c-line);padding-left:28px}
.hero-stat strong{display:block;font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-stat span{display:block;font-size:13px;color:var(--c-ink-3);margin-top:6px}

/* 左右交替长卡 */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:34px 0}
.feature-row:first-of-type{padding-top:0}
.feature-row + .feature-row{border-top:1px solid var(--c-line)}
.feature-media{margin:0}
.feature-media img{width:100%;height:320px;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t)}
.feature-row:hover .feature-media img{box-shadow:var(--sh-2)}
.feature-row.reverse .feature-media{order:2}
.feature-row.reverse .feature-body{order:1}
.feature-body h3{margin:10px 0 12px}
.feature-body p{color:var(--c-ink-2);margin-bottom:16px}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--c-ink-3)}
.point-list{list-style:none;padding:0;margin:0 0 20px}
.point-list li{position:relative;padding-left:18px;margin-bottom:.5em;color:var(--c-ink-2);font-size:15px}
.point-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--c-primary)}

/* 场景条带 */
.scene-list{border-top:1px solid var(--c-line)}
.scene-item{
  display:grid;grid-template-columns:70px 1fr 240px auto;gap:22px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--c-line);transition:background var(--t);
}
.scene-item:hover{background:rgba(228,239,235,.45)}
.scene-item .scene-num{font-size:26px;font-weight:700;color:var(--c-primary);opacity:.38;font-variant-numeric:tabular-nums;line-height:1}
.scene-item h3{font-size:18px;margin:0}
.scene-item p{margin:4px 0 0;font-size:14px;color:var(--c-ink-2);line-height:1.8}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-block;font-size:13px;color:var(--c-primary);background:var(--c-primary-100);border-radius:var(--r-badge);padding:3px 10px;white-space:nowrap}

/* 流程时间线 */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tl-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.tl-item:hover{transform:translateY(-2px);border-color:var(--c-primary);box-shadow:var(--sh-2)}
.tl-step{font-size:13px;font-weight:600;letter-spacing:1px;color:var(--c-accent)}
.tl-item h3{font-size:17px;margin:10px 0 8px}
.tl-item p{font-size:14px;color:var(--c-ink-2);line-height:1.8;margin:0}

/* 深色数据带 */
.stats-band{position:relative;background:var(--c-primary-deep);color:#fff;padding:66px 0;overflow:hidden}
.stats-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--c-accent)}
.stats-band::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 100%);
  background-size:56px 56px;opacity:.6;
}
.stats-band .container{position:relative;z-index:2}
.stats-band h2{color:#fff;margin-bottom:10px}
.stats-band .section-sub{color:rgba(255,255,255,.72)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:38px}
.stat-card{border-left:2px solid rgba(255,255,255,.18);padding-left:20px}
.stat-num{font-size:44px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;color:#fff}
.stat-num small{font-size:18px;font-weight:600;margin-left:2px}
.stat-cap{font-size:13px;color:rgba(255,255,255,.72);margin-top:10px;line-height:1.8}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{position:relative;border-bottom:1px solid var(--c-line)}
.faq-item::before{content:"";position:absolute;left:-14px;top:18px;bottom:18px;width:3px;background:var(--c-accent);opacity:0;transition:opacity var(--t)}
.faq-item.is-open::before{opacity:1}
.faq-q{
  position:relative;width:100%;background:none;border:0;text-align:left;
  padding:20px 44px 20px 0;font-size:17px;font-weight:600;color:var(--c-ink);cursor:pointer;line-height:1.6;
  transition:color var(--t);
}
.faq-q:hover{color:var(--c-primary)}
.faq-q::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--c-primary);transition:transform var(--t)
}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-item.is-open .faq-q::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 42px 22px 0;font-size:15px;line-height:1.9;color:var(--c-ink-2);margin:0}

/* 咨询表单 */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.trust-list{list-style:none;padding:0;margin:22px 0 0}
.trust-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-ink-2);margin-bottom:.8em;line-height:1.8}
.trust-list svg{flex:0 0 auto;margin-top:4px;color:var(--c-primary)}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field label .req{color:var(--c-accent);margin-left:2px}
.field input,.field textarea{
  width:100%;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface);
  font-size:15px;color:var(--c-ink);font-family:inherit;padding:10px 14px;transition:border-color var(--t),box-shadow var(--t);
}
.field input{height:44px}
.field textarea{min-height:112px;resize:vertical;line-height:1.8}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,84,76,.12)}
.field input::placeholder,.field textarea::placeholder{color:#9AA6A3}
.form-note{font-size:13px;color:var(--c-ink-3);margin-top:12px}

/* 尾部 CTA */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary);color:#fff;border-radius:18px;
  padding:56px;display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-70px;width:360px;height:360px;
  background:radial-gradient(circle at center,rgba(255,255,255,.10),rgba(255,255,255,0) 70%);
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.45;margin-bottom:12px;position:relative;z-index:2}
.cta-band p{color:rgba(255,255,255,.82);margin:0;position:relative;z-index:2;max-width:640px}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-ghost{color:#fff !important;border-color:rgba(255,255,255,.55)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* 页脚 */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.78);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.site-footer .brand{margin-bottom:14px}
.site-footer .brand-mark{background:rgba(255,255,255,.14)}
.site-footer .brand-text{color:#fff}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:0}
.site-footer .contact{margin-top:12px;color:rgba(255,255,255,.62)}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:6px}
.site-footer li a{font-size:14px;line-height:1.9;color:rgba(255,255,255,.78);transition:color var(--t)}
.site-footer li a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.14);margin-top:36px;padding-top:18px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.back-top{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:var(--r-btn);padding:8px 16px;font-size:13px;cursor:pointer;transition:background var(--t),border-color var(--t)}
.back-top:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* 响应式 */
@media (max-width:1199.98px){
  .section{padding:64px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .scene-item{grid-template-columns:60px 1fr auto;gap:18px}
  .scene-tags{grid-column:2 / 4}
}
@media (max-width:991.98px){
  .nav-bottom{display:none}
  .nav-toggle{display:inline-flex}
  .search-toggle{display:inline-flex}
  .nav-top-inner > .search-form{display:none}
  .nav-cta{display:none}
  .brand-text{font-size:18px}
  .mobile-search{align-items:center}
  .mobile-search.is-open{display:block}
  .mobile-drawer.is-open{display:block}
  .hero-inner{padding:24px 0 48px}
  .feature-row{grid-template-columns:1fr;gap:26px;padding:30px 0}
  .feature-row.reverse .feature-media{order:0}
  .feature-row.reverse .feature-body{order:0}
  .feature-media img{height:260px}
  .consult-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:40px;gap:24px}
}
@media (max-width:767.98px){
  .section{padding:48px 0}
  .container{padding-left:18px;padding-right:18px}
  h2{font-size:25px}
  .hero-stats{flex-direction:column;gap:16px;margin-top:28px}
  .hero-stat{padding-right:0}
  .hero-stat + .hero-stat{border-left:0;border-top:1px solid var(--c-line);padding-left:0;padding-top:16px;width:100%}
  .scene-item{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .scene-item .scene-num{font-size:20px}
  .scene-tags{grid-column:auto}
  .stats-grid{grid-template-columns:1fr;gap:24px}
  .stat-num{font-size:36px}
  .timeline{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .btn-row .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .cta-band{padding:28px 22px;border-radius:14px}
  .form-card{padding:22px}
  .feature-media img{height:210px}
  .faq-item::before{left:-8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#12544C;
  --c-primary-deep:#0C3A36;
  --c-primary-100:#E4EFEB;
  --c-accent:#C96A2E;
  --c-accent-100:#FBEEDF;
  --c-ink:#17201E;
  --c-ink-2:#4A5654;
  --c-ink-3:#7C8A87;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4E1D9;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(23,32,30,.05),0 6px 20px rgba(23,32,30,.06);
  --shadow-md:0 10px 28px rgba(23,32,30,.10);
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--c-ink);
  --bs-body-bg:var(--c-bg);
  --bs-border-color:var(--c-line);
  --bs-border-radius:var(--radius-btn);
  --bs-primary:#12544C;
  --bs-link-color:#12544C;
  --bs-link-hover-color:#0C3A36;
  --bs-font-sans-serif:var(--font-sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-deep)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--c-ink)}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(247,245,240,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--c-line);
}
.nav-top{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--c-primary-100);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{stroke:var(--c-primary)}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.5px;color:var(--c-ink)}
.brand:hover .brand-text{color:var(--c-primary)}
.nav-search-desktop{
  flex:1 1 auto;display:flex;align-items:center;
  min-width:320px;max-width:560px;height:44px;
  border:1px solid var(--c-line);border-radius:999px;background:var(--c-surface);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search-desktop:focus-within,.nav-search-desktop:hover{
  border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,84,76,.12);
}
.nav-search-desktop .search-icon{margin:0 10px 0 18px;flex:0 0 auto;display:inline-flex}
.nav-search-desktop .search-icon svg{stroke:var(--c-ink-3)}
.nav-search-desktop input{
  flex:1 1 auto;height:100%;border:0;background:transparent;
  font-size:14px;color:var(--c-ink);outline:none;min-width:0;
}
.nav-search-desktop input::placeholder{color:var(--c-ink-3);opacity:.9}
.nav-search-desktop button{
  flex:0 0 auto;height:100%;padding:0 24px;border:0;
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:500;
  cursor:pointer;transition:background .2s ease;
}
.nav-search-desktop button:hover{background:#0E463F}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:500;color:var(--c-primary);
  padding:9px 4px;border-bottom:2px solid transparent;
}
.btn-ghost:hover{border-bottom-color:var(--c-accent);color:var(--c-primary-deep)}
.icon-btn{
  width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;
  background:var(--c-surface);display:none;align-items:center;justify-content:center;
  cursor:pointer;transition:border-color .2s ease,background .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary)}
.icon-btn svg{stroke:var(--c-primary)}
.nav-sub{border-top:1px solid var(--c-line);height:48px;display:flex;align-items:center}
.nav-bottom ul{display:flex;justify-content:center;gap:34px;flex-wrap:wrap}
.nav-bottom a{
  position:relative;display:inline-block;font-size:14px;color:var(--c-ink-2);
  padding:14px 0;transition:color .2s ease;
}
.nav-bottom a::after{
  content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.nav-bottom a:hover{color:var(--c-primary)}
.nav-bottom a:hover::after{transform:scaleX(1)}
.nav-bottom a.active{color:var(--c-primary);font-weight:600}
.nav-bottom a.active::after{transform:scaleX(1)}
.mobile-search{display:none}
.mobile-search.open{display:block;padding:0 0 14px}
.mobile-search .nav-search-desktop{max-width:100%;min-width:0;width:100%}
.mobile-drawer{display:none}
.mobile-drawer.open{display:block;padding-bottom:18px}
.mobile-drawer ul{border-top:1px solid var(--c-line)}
.mobile-drawer li a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;font-size:15px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.mobile-drawer li a.active{color:var(--c-primary);font-weight:600}
.mobile-drawer .drawer-cta{
  display:flex;align-items:center;justify-content:center;
  margin-top:16px;height:46px;border-radius:var(--radius-btn);
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
}
.mobile-drawer .drawer-cta:hover{background:#B65E27;color:#fff}

/* ---------- 通用区块 ---------- */
.section{padding:84px 0;border-top:1px solid var(--c-line)}
.section-head{margin-bottom:34px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
.section-num{
  display:inline-block;font-family:var(--font-serif);font-size:15px;font-weight:600;
  color:var(--c-accent);letter-spacing:1px;margin-bottom:8px;
}
.section-head h2{font-family:var(--font-serif);font-size:30px;line-height:1.4}
.section-sub{margin:10px 0 0;font-size:15px;color:var(--c-ink-2);max-width:640px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;
  color:var(--c-primary);white-space:nowrap;
}
.text-link svg{stroke:var(--c-primary);transition:transform .2s ease}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- 分类页首屏 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.13;
}
.page-hero::after{
  content:"";position:absolute;top:-70px;right:-90px;width:340px;height:340px;
  background:var(--c-primary);opacity:.06;transform:rotate(18deg);border-radius:36px;
}
.hero-inner{position:relative;z-index:2;padding:34px 0 56px;max-width:840px}
.breadcrumb-nav{position:relative;z-index:2;padding-top:22px;font-size:13px;color:var(--c-ink-3)}
.breadcrumb-nav ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-nav li:not(:last-child)::after{content:"/";margin-left:8px;color:var(--c-ink-3)}
.breadcrumb-nav a{color:var(--c-ink-3)}
.breadcrumb-nav a:hover{color:var(--c-primary)}
.breadcrumb-nav .current{color:var(--c-primary);font-weight:500}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-100);border-radius:6px;
  padding:5px 12px;margin-bottom:16px;
}
.page-hero h1{
  font-family:var(--font-serif);font-size:clamp(28px,3.9vw,44px);line-height:1.3;
  letter-spacing:.3px;
}
.hero-lead{margin:18px 0 0;font-size:17px;line-height:1.9;color:var(--c-ink-2);max-width:680px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 18px;
  border-radius:999px;border:1px solid rgba(18,84,76,.45);background:transparent;
  color:var(--c-primary);font-size:14px;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:var(--c-primary-100);border-color:var(--c-primary)}
.chip.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 目录布局 ---------- */
.catalog-layout{display:grid;grid-template-columns:240px 1fr;gap:40px;align-items:start}
.catalog-side{position:sticky;top:140px;display:flex;flex-direction:column;gap:20px}
.side-block{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);
}
.side-block h3{font-size:15px;font-weight:600;margin-bottom:14px}
.side-list li+li{margin-top:2px}
.side-list a{
  display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--c-ink-2);transition:background .2s ease,color .2s ease;
}
.side-list a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.side-list a.current{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.side-list a .dot{width:5px;height:5px;border-radius:50%;background:var(--c-ink-3);flex:0 0 auto}
.side-list a.current .dot,.side-list a:hover .dot{background:var(--c-accent)}
.side-cta{background:var(--c-primary);border:0;color:#fff}
.side-cta h3{color:#fff}
.side-cta p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.82)}
.side-cta .btn-accent{width:100%;justify-content:center;margin-top:16px;padding:11px 18px;font-size:14px}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:all .2s ease;
}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#B65E27;color:#fff;transform:translateY(-1px)}
.btn-line{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-line:hover{background:var(--c-primary-100);color:var(--c-primary-deep);transform:translateY(-1px)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.res-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.res-card:hover{transform:translateY(-2px);border-color:var(--c-primary);box-shadow:var(--shadow-md)}
.res-card img{width:100%;height:150px;object-fit:cover;border-radius:0}
.res-card .card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.badge-cat{
  display:inline-block;font-size:13px;line-height:1.6;color:var(--c-primary);
  background:var(--c-primary-100);border-radius:6px;padding:3px 10px;
}
.res-card h3{font-size:17px;line-height:1.5}
.res-card p{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin:0}
.res-card .card-foot{margin-top:auto;padding-top:6px}
.res-card .card-foot a{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500}
.res-card .card-foot svg{stroke:var(--c-primary);transition:transform .2s ease}
.res-card:hover .card-foot svg{transform:translateX(3px)}

/* ---------- 规格维度对照 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 44px}
.spec-item{padding:20px 0;border-bottom:1px solid var(--c-line)}
.spec-item h4{font-size:16px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.spec-item h4::before{content:"";width:3px;height:15px;background:var(--c-accent);border-radius:2px}
.spec-item p{font-size:14.5px;line-height:1.85;color:var(--c-ink-2);margin:0}

/* ---------- 配置组合条带 ---------- */
.combo-list{border-top:1px solid var(--c-line)}
.combo-item{
  display:grid;grid-template-columns:64px 1fr 250px;gap:26px;
  padding:26px 0;border-bottom:1px solid var(--c-line);align-items:start;
}
.combo-num{
  font-family:var(--font-serif);font-size:28px;font-weight:600;line-height:1.2;
  color:var(--c-primary);opacity:.55;font-variant-numeric:tabular-nums;
}
.combo-item h3{font-size:19px;margin-bottom:8px}
.combo-item p{font-size:14.5px;line-height:1.85;color:var(--c-ink-2);margin:0}
.combo-spec{
  background:var(--c-primary-100);border-radius:10px;padding:14px 16px;
  font-size:13.5px;line-height:1.8;color:var(--c-primary);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.faq-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq-accordion .accordion-button{
  background:transparent;border-radius:0;box-shadow:none;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-accent);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  content:"";width:14px;height:14px;background:none;flex:0 0 auto;margin-left:auto;
  background-image:linear-gradient(var(--c-primary),var(--c-primary)),linear-gradient(var(--c-primary),var(--c-primary));
  background-size:14px 1.5px,1.5px 14px;
  background-position:center,center;background-repeat:no-repeat;
  transition:transform .25s ease,background-size .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);background-size:14px 1.5px,0 0;
}
.faq-accordion .accordion-body{
  padding:0 0 22px 18px;border-left:3px solid var(--c-accent);
  font-size:15px;line-height:1.9;color:var(--c-ink-2);
}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary);
  border-radius:18px;padding:56px;color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 88% 18%,rgba(255,255,255,.16) 0,transparent 42%),
                   repeating-linear-gradient(135deg,rgba(255,255,255,.07) 0 1px,transparent 1px 14px);
  opacity:.9;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.cta-band h2{font-family:var(--font-serif);font-size:30px;line-height:1.45;color:#fff;max-width:620px}
.cta-band p{margin:14px 0 0;font-size:15px;color:rgba(255,255,255,.82);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-line{border-color:rgba(255,255,255,.6);color:#fff}
.cta-band .btn-line:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.82);margin-top:84px;padding:66px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-mark{background:rgba(255,255,255,.12)}
.site-footer .brand-mark svg{stroke:#fff}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:340px}
.footer-brand .contact{font-size:13.5px;color:rgba(255,255,255,.6)}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col li+li{margin-top:2px}
.footer-col a{display:inline-block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);padding:3px 0}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.back-top{
  border:1px solid rgba(255,255,255,.35);background:transparent;color:rgba(255,255,255,.82);
  border-radius:8px;padding:7px 14px;font-size:13px;cursor:pointer;transition:all .2s ease;
}
.back-top:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .combo-item{grid-template-columns:56px 1fr;gap:18px}
  .combo-spec{grid-column:2;margin-top:6px}
}
@media (max-width:991.98px){
  .nav-search-desktop{display:none}
  .nav-sub{display:none}
  .icon-btn{display:inline-flex}
  .catalog-layout{grid-template-columns:1fr}
  .catalog-side{position:static}
  .nav-top{gap:14px}
  .btn-ghost{display:none}
  .section{padding:64px 0}
  .cta-band{padding:44px 32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px}
  .card-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr;gap:0}
  .section{padding:48px 0}
  .hero-inner{padding:26px 0 42px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2,.cta-band h2{font-size:24px}
  .cta-band{padding:34px 22px;border-radius:14px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn-accent,.cta-actions .btn-line{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{margin-top:56px;padding-top:48px}
  .combo-item{grid-template-columns:1fr}
  .combo-num{font-size:22px}
  .combo-spec{grid-column:1}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --c-primary:#12544C;
  --c-primary-deep:#0C3A36;
  --c-primary-100:#E4EFEB;
  --c-accent:#C96A2E;
  --c-accent-100:#FBEEDF;
  --c-ink:#17201E;
  --c-ink-2:#4A5654;
  --c-ink-3:#7C8A87;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4E1D9;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(23,32,30,.05),0 6px 20px rgba(23,32,30,.06);
  --shadow-2:0 10px 28px rgba(23,32,30,.10);
  --bs-primary:#12544C;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#17201E;
  --bs-border-color:#E4E1D9;
  --bs-border-radius:10px;
  --bs-link-color:#12544C;
  --bs-link-hover-color:#C96A2E;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-accent)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:600;letter-spacing:.2px}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.3;font-weight:700}
h2{font-size:30px;line-height:1.4}
h3{font-size:20px;line-height:1.5}
h4{font-size:17px;line-height:1.5}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section-tight{padding:56px 0}
.divider-line{border-top:1px solid var(--c-line)}
section[id]{scroll-margin-top:130px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);padding:12px 26px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;box-shadow:none;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  text-decoration:none;
}
.btn:hover{transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#b85f27;color:#fff}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-100);color:var(--c-primary)}
.btn-primary-solid{background:var(--c-primary);color:#fff}
.btn-primary-solid:hover{background:#0e463f;color:#fff}
/* ============ 文字链接 ============ */
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;
  background:var(--c-accent);transition:width .25s ease;
}
.text-link:hover{color:var(--c-primary)}
.text-link:hover::after{width:100%}
.text-link svg{transition:transform .2s ease}
.text-link:hover svg{transform:translateX(3px)}
/* ============ 徽章 ============ */
.badge-soft{
  display:inline-block;padding:3px 10px;border-radius:6px;
  background:var(--c-primary-100);color:var(--c-primary);
  font-size:13px;font-weight:500;line-height:1.7;
}
.badge-accent{background:var(--c-accent-100);color:#a3531f}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.nav-top-inner{display:flex;align-items:center;gap:22px;height:72px;transition:height .2s ease}
.site-header.scrolled .nav-top-inner{height:60px}
.site-header.scrolled{box-shadow:0 6px 20px rgba(23,32,30,.07)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.5px;color:var(--c-primary);white-space:nowrap}
.search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:520px;min-width:320px;margin:0 auto;
  height:44px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search:hover{border-color:#cfd8d4}
.search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(18,84,76,.12)}
.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);display:flex;color:var(--c-ink-3)}
.search input{
  flex:1 1 auto;border:0;outline:0;background:transparent;
  height:100%;padding:0 6px 0 44px;font-size:14px;border-radius:999px;
}
.search input::placeholder{color:var(--c-ink-3);opacity:.85}
.search input:focus::placeholder{opacity:.55}
.search button{
  flex:0 0 auto;height:34px;margin-right:5px;padding:0 20px;
  border:0;border-radius:999px;background:var(--c-primary);color:#fff;
  font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color .2s ease;
}
.search button:hover{background:#0e463f}
.nav-cta{flex:0 0 auto}
.nav-cta .btn{padding:10px 20px;font-size:14px}
.nav-mobile-actions{display:none;align-items:center;gap:8px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--c-line);border-radius:10px;
  color:var(--c-primary);cursor:pointer;transition:background-color .2s ease;
}
.icon-btn:hover{background:var(--c-primary-100)}
.mobile-search{display:none;padding:0 0 14px}
.mobile-search.open{display:block}
.mobile-search .search{max-width:none;min-width:0;width:100%;margin:0}

.nav-bottom{border-top:1px solid var(--c-line)}
.nav-bottom ul{
  list-style:none;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;
  gap:4px;max-width:1200px;margin:0 auto;padding:0 24px;height:48px;
}
.nav-bottom a{
  position:relative;display:inline-flex;align-items:center;
  height:48px;padding:0 16px;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:color .2s ease;
}
.nav-bottom a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:transparent;transition:background-color .2s ease;
}
.nav-bottom a:hover{color:var(--c-primary)}
.nav-bottom a.active{color:var(--c-primary);font-weight:600}
.nav-bottom a.active::after{background:var(--c-accent)}

.mobile-drawer{
  position:fixed;inset:0;z-index:1050;background:rgba(12,58,54,.42);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
}
.mobile-drawer.open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(88vw,360px);height:100%;
  background:var(--c-surface);padding:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .25s ease;
  border-left:1px solid var(--c-line);
}
.mobile-drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line)}
.drawer-nav{display:flex;flex-direction:column;margin:12px 0 20px}
.drawer-nav a{
  height:48px;display:flex;align-items:center;
  font-size:15px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
}
.drawer-nav a.active{color:var(--c-primary);font-weight:600}
.drawer-cta{width:100%}

/* ============ 面包屑 ============ */
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb-nav a{color:var(--c-ink-3)}
.breadcrumb-nav a:hover{color:var(--c-primary)}
.breadcrumb-nav .current{color:var(--c-primary);font-weight:600}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:52px 0 64px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
  border-bottom:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.06;
}
.page-hero::after{
  content:"";position:absolute;top:-60px;right:-80px;width:340px;height:340px;
  background:var(--c-primary);opacity:.06;transform:rotate(-18deg);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{margin-bottom:16px}
.hero-lead{font-size:17px;color:var(--c-ink-2);max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure img{
  width:100%;border-radius:16px;aspect-ratio:4/3;object-fit:cover;
  box-shadow:var(--shadow-1);
}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;font-size:13px;color:var(--c-ink-3)}
.hero-stats span{display:inline-flex;align-items:center;gap:6px}

/* ============ 数据带 ============ */
.data-band{
  background:var(--c-primary-deep);color:#fff;
  padding:44px 0;border-top:1px solid var(--c-accent);
}
.data-strip{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);margin:0;padding:0}
.data-strip li{padding:0 26px;border-left:1px solid rgba(255,255,255,.18)}
.data-strip li:first-child{border-left:0;padding-left:0}
.data-num{
  display:block;font-size:44px;font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.data-num em{font-size:15px;font-style:normal;font-weight:500;margin-left:6px;color:rgba(255,255,255,.75)}
.data-desc{display:block;margin-top:10px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.72)}

/* ============ 区块头 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head .eyebrow{
  display:block;font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--c-accent);margin-bottom:10px;
}
.section-head h2{max-width:640px}
.section-head p{margin:10px 0 0;font-size:15px;color:var(--c-ink-2);max-width:620px}

/* ============ 案例整行卡 ============ */
.case-list{list-style:none;margin:0;padding:0}
.case-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);
  gap:32px;padding:36px 0;border-bottom:1px solid var(--c-line);
  align-items:start;
}
.case-row:first-child{padding-top:4px}
.case-row:last-child{border-bottom:0;padding-bottom:0}
.case-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);box-shadow:var(--shadow-1);
}
.case-body h3{margin:12px 0 10px}
.case-body .case-desc{font-size:15px;color:var(--c-ink-2);margin-bottom:16px}
.result-list{
  list-style:none;display:flex;flex-wrap:wrap;gap:12px 36px;
  margin:0 0 20px;padding:16px 0 0;border-top:1px dashed var(--c-line);
}
.result-list li{display:flex;flex-direction:column;min-width:96px}
.result-list strong{
  font-size:22px;font-weight:700;color:var(--c-primary);line-height:1.3;
  font-variant-numeric:tabular-nums;
}
.result-list span{font-size:13px;color:var(--c-ink-3);line-height:1.6}

/* ============ 时间线 ============ */
.timeline-band{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.timeline{
  list-style:none;display:grid;grid-template-columns:repeat(5,1fr);
  margin:0;padding:0;border-top:1px solid var(--c-line);
}
.timeline li{position:relative;padding:30px 22px 0 0}
.timeline li::before{
  content:"";position:absolute;top:-5px;left:0;width:9px;height:9px;
  border-radius:50%;background:var(--c-surface);border:2px solid var(--c-primary);
}
.tl-index{font-size:13px;font-weight:600;letter-spacing:.5px;color:var(--c-accent)}
.timeline h3{margin:8px 0 8px}
.timeline p{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin-bottom:10px}
.tl-time{font-size:13px;color:var(--c-ink-3)}

/* ============ FAQ ============ */
.faq-list{max-width:860px}
.faq-item{border-bottom:1px solid var(--c-line);position:relative}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 22px 16px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);transition:color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  background:var(--c-accent);opacity:0;transition:opacity .2s ease;
}
.faq-item.open .faq-q::before{opacity:1}
.faq-q:hover{color:var(--c-primary)}
.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(--c-primary);border-radius:2px;
  transition:transform .25s ease,opacity .25s 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{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{font-size:15px;line-height:1.9;color:var(--c-ink-2);padding:0 40px 24px 16px}

/* ============ 尾部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary);border-radius:18px;
  padding:56px;color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.09;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin:0}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.cta-band .text-link{color:#fff}
.cta-band .text-link:hover{color:#fff}
.cta-meta{list-style:none;display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:20px;font-size:13px;color:rgba(255,255,255,.72)}
.cta-meta li{display:inline-flex;align-items:center;gap:6px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-deep);color:#fff;padding:64px 0 26px;margin-top:84px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:14px 0 0;max-width:340px}
.footer-brand .contact{margin-top:16px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col a{display:inline-block;padding:4px 0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16);
  font-size:13px;color:rgba(255,255,255,.62);
}
.back-top{
  background:transparent;border:1px solid rgba(255,255,255,.34);color:#fff;
  border-radius:10px;padding:8px 16px;font-size:13px;cursor:pointer;
  transition:background-color .2s ease,transform .2s ease;
}
.back-top:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:6fr 5fr;gap:36px}
  .result-list{gap:12px 26px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .section-tight{padding:44px 0}
  .nav-top-inner{height:64px}
  .nav-top .search{display:none}
  .nav-cta{display:none}
  .nav-mobile-actions{display:flex}
  .nav-bottom{display:none}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-copy h1{font-size:clamp(28px,6vw,38px)}
  .data-strip{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .data-strip li:nth-child(3){border-left:0;padding-left:0}
  .case-row{grid-template-columns:1fr;gap:20px;padding:30px 0}
  .case-media img{aspect-ratio:16/9}
  .timeline{grid-template-columns:repeat(2,1fr);gap:0 24px}
  .cta-band{padding:40px 28px}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .cta-actions{flex-direction:row;flex-wrap:wrap;align-items:center}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .site-footer{margin-top:64px}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:24px}
  h2{font-size:24px}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .data-strip{grid-template-columns:1fr}
  .data-strip li{border-left:0;padding:0 0 0 0;border-top:1px solid rgba(255,255,255,.14);padding-top:20px}
  .data-strip li:first-child{border-top:0;padding-top:0}
  .data-num{font-size:36px}
  .timeline{grid-template-columns:1fr}
  .timeline li{padding:24px 0 0 0}
  .result-list{gap:14px 22px}
  .result-list li{min-width:84px}
  .faq-q{font-size:16px;padding-right:6px}
  .faq-a p{padding:0 12px 22px 16px}
  .cta-band{padding:32px 20px;border-radius:14px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-top{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .btn:hover,.back-top:hover{transform:none}
}