/* roulang page: index */
:root{
  --brand:#0E6B5C;
  --brand-dark:#08453B;
  --brand-soft:#E3F2EE;
  --accent:#E58A2E;
  --accent-soft:#FDF0E0;
  --deep:#0B3B34;
  --page-bg:#F7F8F5;
  --alt-bg:#F4F7F5;
  --card-bg:#FFFFFF;
  --text:#1B211F;
  --text-2:#5A6663;
  --text-3:#8A948F;
  --line:#DDE5E1;
  --line-light:rgba(255,255,255,.14);
  --r-card:12px;
  --r-btn:10px;
  --r-badge:6px;
  --r-num:8px;
  --sh-1:0 1px 2px rgba(11,59,52,.05);
  --sh-2:0 2px 8px rgba(11,59,52,.06);
  --sh-3:0 12px 28px rgba(11,59,52,.12);
  --t:180ms ease;
  --sec-pad:100px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--page-bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--t),border-color var(--t);}
a:hover{color:var(--brand-dark);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;
}
h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:700;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;letter-spacing:.01em;}
h2{font-size:clamp(23px,2.6vw,31px);line-height:1.35;}
h3{font-size:19px;font-weight:600;line-height:1.5;}
h4{font-size:16.5px;font-weight:600;line-height:1.6;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.sec{padding:var(--sec-pad) 0;position:relative;}
.sec-alt{background:var(--alt-bg);}
.sec-deep{background:var(--deep);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-badge);
  padding:5px 10px;margin-bottom:16px;font-weight:600;
}
.sec-head p{color:var(--text-2);font-size:16.5px;margin-top:14px;margin-bottom:0;}
.sec-deep .sec-head h2,.sec-deep h2,.sec-deep h3,.sec-deep h4{color:#fff;}
.sec-deep .sec-head p{color:#C9DED8;}

/* 顶部信息条 */
.topbar{background:var(--deep);color:#fff;font-size:13px;letter-spacing:.02em;}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;min-height:34px;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:10px;color:#C9DED8;white-space:nowrap;}
.topbar-left b{color:#fff;font-weight:600;letter-spacing:.03em;}
.topbar-left .dot{width:4px;height:4px;background:var(--accent);border-radius:50%;display:inline-block;}
.topbar-right{display:flex;align-items:center;gap:20px;}
.topbar-right a{color:#fff;font-size:13px;}
.topbar-right a:hover{color:var(--accent);}
.topbar-right .sep{width:1px;height:12px;background:var(--line-light);}

/* 主导航 */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1030;}
.nav-row{display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:24px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:calc(var(--r-num) + 1px);
  background:var(--brand-soft);display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:2px;padding:6px;
}
.brand-mark span{background:var(--brand);border-radius:1.5px;opacity:.85;}
.brand-mark span:nth-child(2),.brand-mark span:nth-child(6),.brand-mark span:nth-child(8){background:var(--accent);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text .b1{font-size:17px;font-weight:700;letter-spacing:.01em;}
.brand-text .b2{font-size:11px;color:var(--text-3);letter-spacing:.16em;}
.nav-main{display:flex;align-items:center;gap:6px;}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:70px;padding:0 16px;
  font-size:15.5px;color:var(--text-2);font-weight:500;
}
.nav-main a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;background:transparent;transition:background var(--t);
}
.nav-main a:hover{color:var(--brand);}
.nav-main a:hover::after{background:var(--brand-soft);}
.nav-main a.active{color:var(--brand);font-weight:600;}
.nav-main a.active::after{background:var(--brand);}
.nav-side{display:flex;align-items:center;gap:14px;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--r-btn);padding:11px 24px;font-size:15.5px;font-weight:600;
  transition:background var(--t),transform var(--t),box-shadow var(--t);cursor:pointer;
}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand);border:1.5px solid var(--brand);
  border-radius:var(--r-btn);padding:10px 22px;font-size:15.5px;font-weight:600;
  transition:background var(--t),transform var(--t);cursor:pointer;
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(-1px);}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#20160A;border:1px solid var(--accent);
  border-radius:var(--r-btn);padding:12px 26px;font-size:15.5px;font-weight:700;
  transition:filter var(--t),transform var(--t);cursor:pointer;
}
.btn-accent:hover{filter:brightness(.94);color:#20160A;transform:translateY(-1px);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.link-more .arw{transition:transform var(--t);}
.link-more:hover .arw{transform:translateX(3px);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  align-items:center;justify-content:center;gap:4px;flex-direction:column;cursor:pointer;
}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;}
.offcanvas{max-width:84%;}
.oc-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.oc-body{padding:8px 0;}
.oc-body a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 20px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);
}
.oc-body a.active{color:var(--brand);font-weight:600;}
.oc-body a .arw{color:var(--text-3);}
.oc-foot{padding:18px 20px;border-top:1px solid var(--line);}

/* Hero */
.hero{position:relative;background:var(--page-bg);overflow:hidden;padding:76px 0 84px;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(14,107,92,.07) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(14,107,92,.07) 1px,transparent 1px);
  background-size:64px 64px;opacity:.55;pointer-events:none;
}
.hero .wrap{position:relative;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;min-height:520px;}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:19px;color:var(--text-2);max-width:520px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:42px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:44px;border-top:1px solid var(--line);padding-top:26px;}
.hero-stats .st b{display:block;font-size:30px;font-weight:700;color:var(--brand);line-height:1.2;}
.hero-stats .st span{font-size:14px;color:var(--text-3);}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);}
.hero-visual img{width:100%;height:460px;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(11,59,52,.62),rgba(11,59,52,.42) 60%,rgba(11,59,52,.24));
}
.hero-badge{
  position:absolute;left:22px;bottom:22px;z-index:2;background:rgba(255,255,255,.94);
  border-radius:var(--r-card);padding:14px 18px;box-shadow:var(--sh-2);max-width:74%;
}
.hero-badge b{display:block;font-size:15px;color:var(--deep);}
.hero-badge span{font-size:13px;color:var(--text-2);}
.hero-tag{
  position:absolute;right:20px;top:20px;z-index:2;background:var(--accent);color:#20160A;
  font-size:13px;font-weight:700;padding:6px 12px;border-radius:var(--r-badge);
}

/* 服务区 不对称栅格 */
.svc-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:48px;align-items:start;}
.svc-sticky{position:sticky;top:110px;}
.svc-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.card{
  background:var(--card-bg);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  height:100%;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#CDDCD7;}
.card-icon{
  width:44px;height:44px;border-radius:var(--r-num);background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.card h3{margin-bottom:10px;}
.card p{color:var(--text-2);font-size:15.5px;margin-bottom:18px;}
.card .link-more{margin-top:auto;}
.card-wide{grid-column:span 2;}
.card-wide .split{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:center;}
.card-wide .cover{border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10;}
.card-wide .cover img{width:100%;height:100%;object-fit:cover;}
.num-block{
  width:32px;height:32px;border-radius:var(--r-num);background:var(--accent-soft);color:#8A5211;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;margin-bottom:14px;
}

/* 优势数据 */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:52px;}
.stat-item{padding:6px 32px;border-left:1px solid var(--line-light);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-item b{display:block;font-size:clamp(34px,4vw,46px);font-weight:700;color:#fff;line-height:1.15;}
.stat-item b em{font-style:normal;font-size:20px;margin-left:4px;color:var(--accent);}
.stat-item span{display:block;color:#C9DED8;font-size:14.5px;margin-top:8px;}
.stat-item p{color:#9DC3BA;font-size:14px;margin:10px 0 0;}

/* 案例展示 */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.case-card{
  background:var(--card-bg);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.case-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft);}
.case-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.case-card:hover .thumb img{transform:scale(1.03);}
.case-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  background:var(--brand-soft);color:var(--brand-dark);font-size:12.5px;font-weight:600;
  padding:4px 10px;border-radius:var(--r-badge);
}
.badge-accent{background:var(--accent-soft);color:#8A5211;}
.case-body p{color:var(--text-2);font-size:15.5px;margin:0;}

/* 流程 */
.flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:12px;}
.flow::before{
  content:"";position:absolute;left:0;right:0;top:19px;height:1px;background:var(--line);
}
.flow-step{position:relative;padding-top:52px;}
.flow-num{
  position:absolute;top:0;left:0;width:38px;height:38px;border-radius:var(--r-num);
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14.5px;font-weight:700;box-shadow:0 0 0 6px var(--page-bg);
}
.sec-alt .flow-num{box-shadow:0 0 0 6px var(--alt-bg);}
.flow-step h4{margin-bottom:8px;}
.flow-step p{color:var(--text-2);font-size:15px;margin:0;}

/* 最新信息 */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:#fff;border-radius:var(--r-badge);padding:6px 13px;
  transition:all var(--t);
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.chip.is-on:hover{color:#fff;background:var(--brand-dark);}
.news-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:start;}
.news-lead{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);
}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.news-lead .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft);}
.news-lead .thumb img{width:100%;height:100%;object-fit:cover;}
.news-lead .body{padding:26px;}
.news-lead h3{font-size:21px;margin:12px 0 12px;line-height:1.5;}
.news-lead p{color:var(--text-2);font-size:15.5px;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);}
.news-list{display:flex;flex-direction:column;gap:18px;}
.news-row{
  display:grid;grid-template-columns:168px 1fr;gap:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);
}
.news-row:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.news-row .thumb{width:100%;aspect-ratio:16/10;border-radius:calc(var(--r-card) - 4px);overflow:hidden;background:var(--brand-soft);}
.news-row .thumb img{width:100%;height:100%;object-fit:cover;}
.news-row h4{margin:8px 0 6px;font-size:16.5px;}
.news-row p{
  color:var(--text-2);font-size:14.5px;margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:64px 28px;text-align:center;min-height:320px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.empty-state svg{width:46px;height:46px;stroke:var(--brand);fill:none;stroke-width:1.4;}
.empty-state b{font-size:17px;color:var(--text);}
.empty-state p{color:var(--text-2);font-size:15px;margin:0;}
.news-foot{margin-top:34px;display:flex;justify-content:center;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.faq-side{position:sticky;top:110px;}
.faq-side p{color:var(--text-2);margin:16px 0 24px;}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;}
.accordion-item:last-child{border-bottom:0;}
.accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 46px 22px 22px;box-shadow:none !important;border-radius:0 !important;position:relative;
}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff;}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;background:var(--brand);border-radius:2px;
}
.accordion-button::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;margin:0;
  transform:translateY(-50%);background:none;transition:transform var(--t);
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:14px 2px,2px 14px;background-position:center,center;background-repeat:no-repeat;
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(90deg);opacity:.55;}
.accordion-body{padding:0 46px 24px 22px;color:var(--text-2);font-size:15.5px;line-height:1.85;}
.faq-wrap{background:var(--alt-bg);border:1px solid var(--line);border-radius:var(--r-card);padding:8px 22px;}

/* 联系转化 */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start;}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;font-weight:600;}
.form-control{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;font-size:15.5px;color:var(--text);background:#fff;transition:border-color var(--t),box-shadow var(--t);
}
textarea.form-control{height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.form-control:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,107,92,.16);
}
.form-hint{font-size:13px;color:var(--text-3);margin-top:8px;}
.form-tip{
  display:none;margin-top:14px;font-size:14px;color:#8A5211;background:var(--accent-soft);
  border-radius:var(--r-btn);padding:10px 14px;
}
.info-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);}
.info-item:last-of-type{border-bottom:0;}
.info-item .k{flex:0 0 88px;color:var(--text-3);font-size:14.5px;}
.info-item .v{color:var(--text);font-size:15.5px;font-weight:600;}
.map-box{
  margin-top:20px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--brand-soft);
  height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--brand-dark);
}
.map-box svg{width:30px;height:30px;stroke:var(--brand);fill:none;stroke-width:1.6;}
.map-box span{font-size:14px;}

/* CTA 通栏 */
.cta-band{background:var(--deep);padding:64px 0;}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:#C9DED8;margin:0;font-size:16px;}

/* 页脚 */
.site-footer{background:var(--deep);color:#C9DED8;padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand-text .b1{color:#fff;}
.footer-brand .brand-text .b2{color:#8FB6AD;}
.footer-brand p{font-size:14.5px;margin:18px 0;color:#A9C9C1;max-width:290px;}
.footer-contact li{font-size:14.5px;color:#A9C9C1;margin-bottom:8px;}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:18px;}
.footer-col a{display:block;font-size:14.5px;color:#A9C9C1;padding:6px 0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid var(--line-light);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#8FB6AD;
}
.footer-bottom a{color:#A9C9C1;}
.footer-bottom a:hover{color:#fff;}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;}

/* 响应式 */
@media (max-width:1199.98px){
  :root{--sec-pad:84px;}
  .wrap{padding:0 22px;}
}
@media (max-width:991.98px){
  :root{--sec-pad:70px;}
  .nav-main,.nav-side .btn-main,.nav-side .search-slot{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto;}
  .hero-visual img{height:360px;}
  .svc-grid{grid-template-columns:1fr;gap:32px;}
  .svc-sticky{position:static;}
  .stat-row{grid-template-columns:1fr 1fr;gap:0;}
  .stat-item{padding:22px;border-left:1px solid var(--line-light);}
  .stat-item:nth-child(odd){border-left:0;padding-left:0;}
  .news-layout{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .faq-side{position:static;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .flow{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .flow::before{display:none;}
}
@media (max-width:767.98px){
  :root{--sec-pad:58px;}
  body{font-size:16px;}
  .wrap{padding:0 16px;}
  .topbar-right a:not(.keep){display:none;}
  .topbar-right .sep{display:none;}
  .case-grid{grid-template-columns:1fr;}
  .svc-cards{grid-template-columns:1fr;}
  .card-wide{grid-column:span 1;}
  .card-wide .split{grid-template-columns:1fr;gap:16px;}
  .hero-stats{gap:28px;}
  .hero-stats .st b{font-size:26px;}
  .hero-visual img{height:280px;}
  .news-row{grid-template-columns:1fr;gap:12px;}
  .news-row .thumb{aspect-ratio:16/9;}
  .flow{grid-template-columns:1fr;gap:26px;}
  .flow-step{padding-top:46px;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .btn-main,.btn-ghost,.btn-accent{width:100%;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .panel{padding:22px;}
  .accordion-button{font-size:16px;padding:18px 40px 18px 16px;}
  .accordion-body{padding:0 40px 20px 16px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;}
  .stat-item{padding-left:0;border-left:0;border-top:1px solid var(--line-light);padding-top:20px;}
  .stat-item:first-child{border-top:0;padding-top:0;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E6B5C;
  --c-primary-deep:#08453B;
  --c-primary-soft:#E3F2EE;
  --c-accent:#E58A2E;
  --c-accent-soft:#FDF0E0;
  --c-dark:#0B3B34;
  --c-dark-text:#C9DED8;
  --c-bg:#F7F8F5;
  --c-bg-alt:#F4F7F5;
  --c-card:#FFFFFF;
  --c-ink:#1B211F;
  --c-ink-2:#5A6663;
  --c-ink-3:#8A948F;
  --c-border:#DDE5E1;
  --r-card:12px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --r-num:8px;
  --sh-1:0 1px 2px rgba(11,59,52,.05);
  --sh-2:0 2px 8px rgba(11,59,52,.06);
  --sh-3:0 12px 28px rgba(11,59,52,.12);
  --t:180ms ease;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,
*::before,
*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  font-feature-settings:"tnum" 1;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--c-primary-deep);}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;letter-spacing:.01em;}
h2{font-size:clamp(23px,2.6vw,31px);line-height:1.35;}
h3{font-size:19px;font-weight:600;line-height:1.5;}
h4{font-size:16.5px;font-weight:600;line-height:1.5;}

button{font-family:inherit;}
input,textarea,select{font-family:inherit;}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
.accordion-button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:none;}

.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--c-dark);
  color:#fff;
  font-size:13px;
  letter-spacing:.02em;
  min-height:34px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:34px;
}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.04em;}
.topbar-tip{color:var(--c-dark-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:20px;}
.topbar-right a{color:#fff;font-size:13px;}
.topbar-right a:hover{color:var(--c-accent);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-template-rows:repeat(3,1fr);
  gap:3px;
  width:34px;
  height:34px;
  padding:6px;
  background:var(--c-primary);
  border-radius:var(--r-num);
  flex:0 0 auto;
}
.brand-mark span{background:rgba(255,255,255,.86);border-radius:1px;}
.brand-text{display:flex;align-items:baseline;gap:5px;line-height:1;}
.brand-text .b1{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.brand-text .b2{font-size:12px;font-weight:600;color:#fff;background:var(--c-primary);border-radius:var(--r-badge);padding:3px 6px;letter-spacing:.06em;}
.brand:hover .b1{color:var(--c-primary-deep);}

.nav-main{display:flex;align-items:center;gap:30px;}
.nav-main a{
  position:relative;
  font-size:15.5px;
  color:var(--c-ink-2);
  padding:24px 0;
  display:inline-block;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:transparent;
  transition:background-color var(--t);
}
.nav-main a:hover{color:var(--c-primary);}
.nav-main a:hover::after{background:var(--c-primary);}
.nav-main a.active{color:var(--c-primary);font-weight:600;}
.nav-main a.active::after{background:var(--c-primary);}

.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-border);
  background:#fff;
  border-radius:var(--r-btn);
  color:var(--c-ink-2);
  transition:all var(--t);
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-border);
  background:#fff;
  border-radius:var(--r-btn);
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color var(--t);
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink-2);border-radius:2px;}
.menu-toggle:hover{border-color:var(--c-primary);}
.menu-toggle:hover span{background:var(--c-primary);}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--c-primary);
  color:#fff;
  border:1px solid var(--c-primary);
  border-radius:var(--r-btn);
  padding:12px 26px;
  font-size:15.5px;
  font-weight:600;
  line-height:1.4;
  transition:all var(--t);
  cursor:pointer;
}
.btn-main:hover{background:#0b5a4d;border-color:#0b5a4d;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:transparent;
  color:var(--c-primary);
  border:1.5px solid var(--c-primary);
  border-radius:var(--r-btn);
  padding:11px 24px;
  font-size:15.5px;
  font-weight:600;
  line-height:1.4;
  transition:all var(--t);
  cursor:pointer;
}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-1px);}
.btn-accent{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--c-accent);
  color:#241703;
  border:1px solid var(--c-accent);
  border-radius:var(--r-btn);
  padding:12px 26px;
  font-size:15.5px;
  font-weight:700;
  transition:all var(--t);
}
.btn-accent:hover{background:#d07c22;border-color:#d07c22;color:#241703;transform:translateY(-1px);box-shadow:var(--sh-2);}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
}
.link-more .arw{transition:transform var(--t);}
.link-more:hover{color:var(--c-primary-deep);border-bottom:2px solid var(--c-primary);}
.link-more:hover .arw{transform:translateX(3px);}

/* ---------- 分类页头 ---------- */
.cat-hero{
  position:relative;
  background-image:linear-gradient(rgba(11,59,52,.62),rgba(11,59,52,.5)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  padding:44px 0 68px;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:78px 78px;
  pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:1;max-width:880px;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  margin-bottom:16px;
  color:var(--c-dark-text);
}
.crumb a{color:#fff;}
.crumb a:hover{color:var(--c-accent);}
.crumb .sep{color:rgba(255,255,255,.45);}
.crumb .cur{color:var(--c-dark-text);}
.cat-hero h1{color:#fff;margin-bottom:18px;}
.cat-hero .lead{
  font-size:17px;
  line-height:1.9;
  color:var(--c-dark-text);
  margin:0 0 26px;
  max-width:720px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  font-size:13px;
  color:#fff;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-badge);
  padding:5px 11px;
}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--c-bg-alt);}
.section-white{background:#fff;}
.sec-head{max-width:800px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-badge);
  padding:5px 12px;
  margin-bottom:16px;
}
.sec-head h2{margin-bottom:16px;}
.sec-head p{font-size:16.5px;color:var(--c-ink-2);margin:0;}

/* ---------- 分类介绍 ---------- */
.intro-body{max-width:820px;font-size:17px;color:var(--c-ink-2);}
.intro-body strong{color:var(--c-ink);font-weight:600;}
.intro-points{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:36px;
  max-width:960px;
}
.intro-points li{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  padding:22px 24px;
  box-shadow:var(--sh-1);
  font-size:15.5px;
  color:var(--c-ink-2);
}
.intro-points li b{display:block;color:var(--c-ink);font-size:16.5px;margin-bottom:6px;font-weight:600;}

/* ---------- 图文交替 ---------- */
.alt-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.alt-row + .alt-row{margin-top:76px;}
.alt-row .alt-media{position:relative;}
.alt-row .alt-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border:1px solid var(--c-border);
  box-shadow:var(--sh-2);
}
.alt-num{
  position:absolute;
  left:-14px;
  top:-14px;
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--c-accent);
  color:#241703;
  font-weight:700;
  font-size:15px;
  border-radius:var(--r-num);
  box-shadow:var(--sh-2);
}
.alt-body h3{margin-bottom:14px;}
.alt-body p{color:var(--c-ink-2);font-size:16.5px;}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  color:var(--c-ink-2);
  font-size:16px;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:9px;
  height:9px;
  background:var(--c-primary);
  border-radius:2px;
}
.alt-row.reverse .alt-media{order:2;}
.alt-row.reverse .alt-body{order:1;}

/* ---------- 数据条 ---------- */
.data-strip{
  background:var(--c-primary-soft);
  border:1px solid #CBE5DE;
  border-radius:var(--r-card);
  padding:36px 28px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:8px;
}
.data-item{
  padding:0 22px;
  border-left:1px solid rgba(14,107,92,.16);
}
.data-item:first-child{border-left:none;padding-left:0;}
.data-num{
  font-size:38px;
  font-weight:700;
  line-height:1.1;
  color:var(--c-primary-deep);
  letter-spacing:.01em;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.data-num small{font-size:14px;font-weight:600;color:var(--c-primary);}
.data-label{font-size:14px;color:var(--c-ink-2);margin-top:8px;}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:360px 1fr;
  gap:56px;
  align-items:start;
}
.faq-side{position:sticky;top:104px;}
.faq-side h2{margin-bottom:16px;}
.faq-side p{color:var(--c-ink-2);font-size:16.5px;margin-bottom:24px;}
.faq-acc .accordion-item{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-acc .accordion-button{
  position:relative;
  width:100%;
  background:#fff;
  color:var(--c-ink);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:20px 60px 20px 24px;
  box-shadow:none;
  border:0;
  text-align:left;
}
.faq-acc .accordion-button::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:transparent;
  transition:background-color var(--t);
}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--c-bg-alt);
  color:var(--c-primary-deep);
  box-shadow:none;
}
.faq-acc .accordion-button:not(.collapsed)::before{background:var(--c-primary);}
.faq-acc .accordion-button::after{
  content:"+";
  background-image:none;
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:400;
  color:var(--c-primary);
  border:1px solid var(--c-border);
  border-radius:var(--r-badge);
  transition:all var(--t);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"−";
  color:#fff;
  background:var(--c-primary);
  border-color:var(--c-primary);
}
.faq-acc .accordion-button:hover{color:var(--c-primary-deep);}
.faq-acc .accordion-body{
  padding:4px 60px 22px 24px;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg-alt);
}
.faq-acc .accordion-body p:last-child{margin-bottom:0;}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--c-dark);
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:70px 70px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-inner h2{color:#fff;margin-bottom:12px;max-width:640px;}
.cta-inner p{color:var(--c-dark-text);margin:0;font-size:16.5px;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-dark);
  color:var(--c-dark-text);
  padding:72px 0 0;
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:52px;
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:52px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .b1{color:#fff;}
.footer-brand p{color:var(--c-dark-text);font-size:15px;margin:0 0 18px;max-width:360px;}
.footer-contact li{color:var(--c-dark-text);font-size:14.5px;margin-bottom:8px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-col a{display:block;color:var(--c-dark-text);font-size:14.5px;padding:6px 0;}
.footer-col a:hover{color:var(--c-accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  font-size:13.5px;
  color:rgba(201,222,216,.85);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{color:var(--c-dark-text);font-size:13.5px;}
.footer-links a:hover{color:var(--c-accent);}

/* ---------- 移动菜单 ---------- */
.offcanvas{background:#fff;max-width:86vw;}
.offcanvas-header{border-bottom:1px solid var(--c-border);padding:18px 22px;}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--c-ink);}
.offcanvas-body{padding:12px 22px 28px;}
.m-menu a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:48px;
  padding:10px 0;
  font-size:16px;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-border);
}
.m-menu a.active{color:var(--c-primary);font-weight:600;}
.m-menu a .arw{color:var(--c-ink-3);}
.m-menu a:hover{color:var(--c-primary);}
.m-cta{margin-top:24px;}
.m-cta .btn-main{width:100%;}
.m-info{margin-top:22px;font-size:13.5px;color:var(--c-ink-2);line-height:1.9;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .faq-layout{grid-template-columns:320px 1fr;gap:40px;}
  .alt-row{gap:40px;}
}

@media (max-width:991px){
  .nav-main{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .icon-btn{display:none;}
  .section{padding:68px 0;}
  .cat-hero{padding:34px 0 56px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .data-strip{grid-template-columns:repeat(2,1fr);gap:24px 0;padding:30px 24px;}
  .data-item:nth-child(3){border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-row.reverse .alt-body{order:1;}
  .alt-row + .alt-row{margin-top:56px;}
  .alt-num{left:-8px;top:-8px;}
  .intro-points{grid-template-columns:1fr 1fr;}
}

@media (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 16px;}
  .topbar-tip{display:none;}
  .topbar-right a:not(:first-child){display:none;}
  .topbar-right{gap:12px;}
  .header-inner{min-height:62px;gap:12px;}
  .brand-text .b1{font-size:16px;}
  .header-actions .btn-main{padding:9px 16px;font-size:14.5px;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero .lead{font-size:16px;}
  .intro-points{grid-template-columns:1fr;gap:14px;}
  .data-strip{grid-template-columns:1fr;gap:22px;padding:26px 20px;}
  .data-item{border-left:none;padding:0 0 0 14px;border-left:2px solid var(--c-primary);}
  .data-item:first-child{padding-left:14px;}
  .alt-row + .alt-row{margin-top:44px;}
  .faq-acc .accordion-button{font-size:16px;padding:16px 52px 16px 18px;}
  .faq-acc .accordion-body{padding:2px 18px 18px;font-size:15.5px;}
  .cta-band{padding:56px 0;}
  .cta-inner{gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-accent,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:40px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .data-num{font-size:32px;}
  .cta-inner h2{font-size:22px;}
}

/* roulang page: article */
:root{
  --c-main:#0E6B5C;
  --c-main-d:#08453B;
  --c-main-h:#0B5749;
  --c-main-l:#E3F2EE;
  --c-amber:#E58A2E;
  --c-amber-d:#D17D24;
  --c-amber-l:#FDF0E0;
  --c-dark:#0B3B34;
  --c-dark-2:#072A25;
  --c-dark-line:rgba(255,255,255,.14);
  --c-dark-text:#C9DED8;
  --c-bg:#F7F8F5;
  --c-alt:#F4F7F5;
  --c-card:#FFFFFF;
  --c-ink:#1B211F;
  --c-ink2:#5A6663;
  --c-ink3:#8A948F;
  --c-line:#DDE5E1;
  --r-card:12px;
  --r-btn:10px;
  --r-img:12px;
  --r-badge:6px;
  --r-num:8px;
  --sh-1:0 1px 2px rgba(11,59,52,.05);
  --sh-2:0 2px 8px rgba(11,59,52,.06);
  --sh-3:0 12px 28px rgba(11,59,52,.12);
  --tr:180ms ease;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-main);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--c-main-d)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:.01em;line-height:1.35}
p{margin:0 0 1.2em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px}
::selection{background:var(--c-main-l);color:var(--c-main-d)}

/* 顶部信息条 */
.topbar{background:var(--c-dark);color:#fff;font-size:13px;letter-spacing:.02em}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar-left .tb-domain{font-weight:600;color:#fff;white-space:nowrap}
.topbar-left .tb-tip{color:var(--c-dark-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:20px;white-space:nowrap}
.topbar-right a{color:#fff;font-size:13px}
.topbar-right a:hover{color:var(--c-amber)}

/* 主导航 */
.site-head{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;display:grid;
  grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:3px;padding:5px;border:1px solid var(--c-line);
  border-radius:var(--r-num);background:var(--c-main-l);
}
.brand-mark span{display:block;border-radius:1px;background:var(--c-main);opacity:.88}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text .b1{font-size:19px;font-weight:700;letter-spacing:.02em}
.brand-text .b2{font-size:12px;color:var(--c-ink3);letter-spacing:.3em;margin-top:2px}
.nav-main{display:flex;align-items:center;gap:2px}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:72px;
  padding:0 16px;font-size:16px;color:var(--c-ink);
}
.nav-main a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:transparent;transition:background var(--tr);
}
.nav-main a:hover,.nav-main a.active{color:var(--c-main)}
.nav-main a:hover::after,.nav-main a.active::after{background:var(--c-main)}
.nav-main a.active{font-weight:600}
.head-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;
  color:var(--c-ink2);cursor:pointer;transition:all var(--tr);
}
.icon-btn:hover{color:var(--c-main);border-color:var(--c-main);background:var(--c-main-l)}
.nav-toggle{display:none}
.nav-collapse-inner{padding:6px 24px 18px}
.nav-collapse-inner a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:16px;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.nav-collapse-inner a:hover{color:var(--c-main)}
.nav-collapse-inner .chev{color:var(--c-ink3);font-size:18px;line-height:1}
.nav-collapse-inner .btn{width:100%;margin-top:16px}
@media (min-width:992px){.nav-collapse{display:none!important}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);border:1.5px solid transparent;cursor:pointer;
  transition:all var(--tr);white-space:nowrap;
}
.btn-main{background:var(--c-main);color:#fff}
.btn-main:hover{background:var(--c-main-h);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;border-color:var(--c-main);color:var(--c-main)}
.btn-ghost:hover{background:var(--c-main-l);color:var(--c-main-d)}
.btn-amber{background:var(--c-amber);color:#2C1A06}
.btn-amber:hover{background:var(--c-amber-d);color:#2C1A06;transform:translateY(-1px)}
.btn-line{background:transparent;border:1px solid var(--c-line);color:var(--c-ink2)}
.btn-line:hover{border-color:var(--c-main);color:var(--c-main);background:var(--c-main-l)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;
  font-weight:600;color:var(--c-main);
}
.link-more .ar{transition:transform var(--tr)}
.link-more:hover{color:var(--c-main-d);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.link-more:hover .ar{transform:translateX(3px)}

/* 徽章标签 */
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-badge);font-size:12.5px;font-weight:600;
  background:var(--c-main-l);color:var(--c-main-d);
}
.badge-amber{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-badge);font-size:12.5px;font-weight:600;
  background:var(--c-amber-l);color:#8A4E10;
}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 12px;
  font-size:13px;border-radius:var(--r-badge);
  background:var(--c-alt);border:1px solid var(--c-line);color:var(--c-ink2);
  transition:all var(--tr);
}
.tag:hover{border-color:var(--c-main);color:var(--c-main);background:var(--c-main-l)}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;margin-bottom:16px}
.crumb a{color:var(--c-main)}
.crumb .sep{color:var(--c-ink3)}
.crumb .cur{color:var(--c-ink3);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumb-dark a{color:#fff}
.crumb-dark a:hover{color:var(--c-amber)}
.crumb-dark .sep,.crumb-dark .cur{color:rgba(255,255,255,.6)}

/* 文章头部 */
.art-hero{position:relative;overflow:hidden;background:var(--c-dark-2);color:#fff}
.art-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.art-hero-overlay{position:absolute;inset:0;background:rgba(7,42,37,.78)}
.art-hero-inner{position:relative;z-index:2;padding:64px 24px 60px}
.art-hero-inner .badge-amber{margin-bottom:18px}
.art-title{
  color:#fff;font-size:clamp(26px,4vw,42px);line-height:1.28;
  letter-spacing:.01em;max-width:22ch;
}
.art-sub{
  margin:20px 0 0;max-width:760px;font-size:16.5px;line-height:1.85;
  color:var(--c-dark-text);
}
.art-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;
  margin-top:26px;padding-top:22px;border-top:1px solid var(--c-dark-line);
  font-size:14px;color:var(--c-dark-text);
}
.art-meta .dot{width:4px;height:4px;border-radius:1px;background:rgba(255,255,255,.4)}
.art-meta em{font-style:normal;color:#fff;font-weight:600}

/* 正文区 */
.art-body-section{padding:64px 0 88px;background:var(--c-bg)}
.art-content{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:40px;max-width:860px;
  font-size:17px;line-height:1.9;color:var(--c-ink);word-break:break-word;
}
.art-content > *:first-child{margin-top:0}
.art-content p{margin:0 0 1.2em}
.art-content h2{
  font-size:26px;line-height:1.4;margin:2em 0 .85em;
  padding-left:16px;border-left:3px solid var(--c-main);
}
.art-content h3{font-size:20px;margin:1.8em 0 .7em}
.art-content h4{font-size:17px;margin:1.6em 0 .6em;color:var(--c-main-d)}
.art-content ul,.art-content ol{margin:0 0 1.2em;padding-left:22px}
.art-content ul{list-style:none;padding-left:4px}
.art-content ul li{position:relative;padding-left:18px;margin-bottom:.55em}
.art-content ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:1px;background:var(--c-main);
}
.art-content ol{list-style:decimal}
.art-content ol li{margin-bottom:.55em;padding-left:.2em}
.art-content ol li::marker{color:var(--c-main);font-weight:700}
.art-content blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--c-alt);
  border-left:3px solid var(--c-main);border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--c-ink2);
}
.art-content blockquote p:last-child{margin-bottom:0}
.art-content img{border-radius:var(--r-img);margin:1.4em auto;height:auto}
.art-content figure{margin:1.6em 0}
.art-content figcaption{font-size:13px;color:var(--c-ink3);text-align:center;margin-top:10px}
.art-content table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
}
.art-content th,.art-content td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.art-content thead th{background:var(--c-main-l);color:var(--c-main-d);font-weight:600}
.art-content tbody tr:nth-child(even){background:var(--c-alt)}
.art-content tbody tr:last-child td{border-bottom:none}
.art-content code{
  background:var(--c-alt);border:1px solid var(--c-line);border-radius:4px;
  padding:2px 6px;font-size:14px;
}
.art-content pre{
  background:var(--c-dark-2);color:#DCEFE9;padding:18px;border-radius:var(--r-card);
  overflow:auto;font-size:14px;line-height:1.7;
}
.art-content pre code{background:none;border:none;color:inherit;padding:0}
.art-content a{text-decoration:underline;text-underline-offset:3px}
.art-content hr{border:none;border-top:1px solid var(--c-line);margin:2.2em 0}

/* 空态 */
.empty-state{
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);
  text-align:center;padding:60px 24px;min-height:320px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.empty-state .es-ico{
  width:60px;height:60px;border-radius:var(--r-num);background:var(--c-main-l);
  color:var(--c-main);display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.empty-state h3{font-size:19px;margin-bottom:10px}
.empty-state p{color:var(--c-ink2);margin-bottom:22px;font-size:15px}

/* 文末操作 */
.art-foot{
  margin-top:28px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px;max-width:860px;
}
.art-foot h3{font-size:17px;margin-bottom:16px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}
.pager a{
  display:block;padding:16px 18px;border:1px solid var(--c-line);
  border-radius:var(--r-card);background:var(--c-alt);transition:all var(--tr);
}
.pager a:hover{border-color:var(--c-main);background:#fff;transform:translateY(-2px);box-shadow:var(--sh-3)}
.pager .lbl{display:block;font-size:13px;color:var(--c-ink3);margin-bottom:6px}
.pager .ttl{display:block;font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.6}
.pager a:hover .ttl{color:var(--c-main)}
.pager .pager-next{text-align:right}

/* 侧栏 */
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card + .side-card{margin-top:20px}
.side-card h3{font-size:17px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--c-line)}
.side-card p{font-size:14.5px;color:var(--c-ink2);line-height:1.85;margin-bottom:0}
.side-list li a{
  display:flex;gap:10px;align-items:flex-start;padding:11px 0;
  font-size:15px;color:var(--c-ink);border-bottom:1px dashed var(--c-line);
}
.side-list li:last-child a{border-bottom:none}
.side-list li a:hover{color:var(--c-main)}
.side-list .idx{
  flex:0 0 22px;height:22px;border-radius:6px;background:var(--c-main-l);
  color:var(--c-main-d);font-size:12px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;margin-top:5px;
}
.side-cta{background:var(--c-dark);border-color:var(--c-dark);color:#fff}
.side-cta h3{color:#fff;border-bottom-color:var(--c-dark-line)}
.side-cta p{color:var(--c-dark-text)}
.side-cta .btn{width:100%;margin-top:18px}
@media (min-width:992px){.side-sticky{position:sticky;top:96px}}

/* 相关推荐 */
.related{padding:76px 0;background:var(--c-alt);border-top:1px solid var(--c-line)}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,30px)}
.sec-head p{margin:14px 0 0;font-size:16px;color:var(--c-ink2);line-height:1.85}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.r-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:all var(--tr);
}
.r-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#CFE0DA}
.r-thumb{aspect-ratio:16/10;background:var(--c-main-l);overflow:hidden}
.r-thumb img{width:100%;height:100%;object-fit:cover}
.r-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.r-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink3)}
.r-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--c-ink);transition:color var(--tr)}
.r-card:hover .r-title{color:var(--c-main)}
.r-desc{
  font-size:14px;color:var(--c-ink2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.r-body .link-more{margin-top:auto}

/* CTA 通栏 */
.cta-band{background:var(--c-dark);color:#fff;padding:60px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:72px 72px;opacity:.5;
}
.cta-band-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-band p{margin:12px 0 0;color:var(--c-dark-text);font-size:15.5px;max-width:62ch}

/* 页脚 */
.site-footer{background:var(--c-dark);color:var(--c-dark-text);padding-top:64px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:40px;border-bottom:1px solid var(--c-dark-line);
}
.footer-brand .brand{color:#fff}
.footer-brand .brand-text .b1{color:#fff}
.footer-brand .brand-text .b2{color:var(--c-amber)}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:var(--c-dark-line)}
.footer-brand .brand-mark span{background:var(--c-amber);opacity:.9}
.footer-brand p{font-size:14.5px;line-height:1.85;margin:18px 0 0;color:var(--c-dark-text)}
.footer-contact{margin-top:16px}
.footer-contact li{font-size:14px;color:var(--c-dark-text);margin-bottom:8px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer-col a{display:block;font-size:14.5px;color:var(--c-dark-text);padding:6px 0}
.footer-col a:hover{color:var(--c-amber)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 20px;padding:22px 0 26px;font-size:13.5px;color:#9FC0B8;
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{color:#9FC0B8}
.footer-links a:hover{color:var(--c-amber)}

/* 响应式 */
@media (max-width:1199.98px){
  .related-grid{gap:22px}
}
@media (max-width:991.98px){
  .nav-main{display:none}
  .head-actions .btn-main{display:none}
  .nav-toggle{display:inline-flex}
  .art-hero-inner{padding:48px 24px 46px}
  .art-hero-inner .art-title{max-width:100%}
  .art-body-section{padding:48px 0 64px}
  .art-content{padding:28px 24px;font-size:16.5px}
  .related{padding:56px 0}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .topbar-right a:not(:first-child){display:none}
  .topbar-left .tb-tip{display:none}
  .head-inner{min-height:64px}
  .brand-text .b1{font-size:17px}
  .art-meta{font-size:13.5px;gap:8px 14px}
  .art-content{font-size:16px;padding:22px 18px;border-radius:var(--r-card)}
  .art-content h2{font-size:21px;padding-left:12px}
  .art-content h3{font-size:18px}
  .art-content table{font-size:14px}
  .pager{grid-template-columns:1fr}
  .pager .pager-next{text-align:left}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:28px}
  .footer-bottom{font-size:13px}
  .btn{width:100%}
  .head-actions .icon-btn{width:44px;flex:0 0 44px}
  .head-actions .btn{width:auto}
  .pager a .btn{width:auto}
}
@media (max-width:519.98px){
  .art-hero-inner{padding:40px 16px 38px}
  .art-sub{font-size:15.5px}
  .r-body{padding:18px}
}

/* roulang page: category2 */
:root{
  --c-primary:#0E6B5C;
  --c-primary-dark:#08453B;
  --c-primary-soft:#E3F2EE;
  --c-amber:#E58A2E;
  --c-amber-soft:#FDF0E0;
  --c-deep:#0B3B34;
  --c-deep-2:#062A25;
  --c-page:#F7F8F5;
  --c-card:#FFFFFF;
  --c-alt:#F4F7F5;
  --t-main:#1B211F;
  --t-sub:#5A6663;
  --t-weak:#8A948F;
  --t-invert:#FFFFFF;
  --t-invert-sub:#C9DED8;
  --line:#DDE5E1;
  --line-invert:rgba(255,255,255,.14);
  --r-card:12px;
  --r-btn:10px;
  --r-badge:6px;
  --r-input:10px;
  --r-num:8px;
  --sh-1:0 1px 2px rgba(11,59,52,.05);
  --sh-2:0 2px 8px rgba(11,59,52,.06);
  --sh-3:0 12px 28px rgba(11,59,52,.12);
  --container:1240px;
  --sp-sec:96px;
  --tr:180ms ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--t-main);
  background:var(--c-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-card);}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr),background-color var(--tr),border-color var(--tr);}
a:hover{color:var(--c-primary-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t-main);letter-spacing:.01em;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;}
h3{font-size:19px;line-height:1.5;font-weight:600;}
h4{font-size:16.5px;line-height:1.6;font-weight:600;}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;padding-left:1.25em;}
li{margin-bottom:.5em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.wrap{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ------- 顶部信息条 ------- */
.topbar{background:var(--c-deep);color:var(--t-invert);font-size:13px;letter-spacing:.02em;}
.topbar-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-domain{color:var(--t-invert-sub);font-variant-numeric:tabular-nums;}
.topbar-note{color:var(--t-invert);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:18px;}
.topbar-right a{color:var(--t-invert);font-size:13px;text-decoration:none;}
.topbar-right a:hover{color:var(--c-amber);text-decoration:none;}

/* ------- 主导航 ------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);}
.header-inner{min-height:68px;display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--t-main);text-decoration:none;flex-shrink:0;}
.brand:hover{color:var(--t-main);text-decoration:none;}
.brand-mark{width:26px;height:26px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:2px;flex-shrink:0;}
.brand-mark span{background:var(--c-primary);border-radius:1px;opacity:.9;}
.brand-mark span:nth-child(2),
.brand-mark span:nth-child(4),
.brand-mark span:nth-child(6),
.brand-mark span:nth-child(8){background:var(--c-amber);opacity:.85;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text .b1{font-size:17px;font-weight:700;letter-spacing:.02em;}
.brand-text .b2{font-size:11px;color:var(--t-weak);letter-spacing:.22em;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--t-main);font-weight:500;
}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:transparent;transition:background var(--tr);
}
.nav-main a:hover{color:var(--c-primary);text-decoration:none;}
.nav-main a:hover::after{background:var(--c-primary-soft);}
.nav-main a.active{color:var(--c-primary);font-weight:600;}
.nav-main a.active::after{background:var(--c-primary);}
.header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.icon-btn{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--t-sub);
  cursor:pointer;transition:var(--tr);
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.icon-btn svg{width:18px;height:18px;}
.menu-toggle{display:none;}
.search-bar{display:none;border-top:1px solid var(--line);background:var(--c-alt);}
.search-bar.open{display:block;}
.search-bar form{display:flex;gap:10px;padding:14px 0;}
.search-bar input{flex:1;}

/* ------- 按钮 ------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);
  padding:12px 26px;font-size:15.5px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
  transition:var(--tr);text-decoration:none;min-height:46px;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-amber{background:var(--c-amber);color:#221505;}
.btn-amber:hover{background:#cf7a22;color:#1a1004;}
.btn-sm{padding:9px 18px;font-size:14.5px;min-height:40px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-primary);font-size:14.5px;}
.link-arrow span{transition:transform var(--tr);}
.link-arrow:hover{text-decoration:none;color:var(--c-primary-dark);}
.link-arrow:hover span{transform:translateX(3px);}

/* ------- 面包屑 ------- */
.crumbs{font-size:14px;color:var(--t-weak);padding:20px 0 0;}
.crumbs a{color:var(--c-primary);text-decoration:none;}
.crumbs a:hover{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.crumbs .sep{margin:0 8px;color:var(--line);}
.crumbs .cur{color:var(--t-weak);}

/* ------- 页头 ------- */
.page-head{
  position:relative;background:var(--c-alt);border-bottom:1px solid var(--line);
  padding:36px 0 64px;overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(14,107,92,.07) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(14,107,92,.07) 1px,transparent 1px);
  background-size:56px 56px;opacity:.85;
}
.page-head .wrap{position:relative;}
.head-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center;margin-top:24px;}
.head-lead{font-size:18px;color:var(--t-sub);max-width:600px;margin:18px 0 26px;}
.head-cta{display:flex;gap:12px;flex-wrap:wrap;}
.head-figure{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--line);}
.head-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0;}
.head-figure::after{content:"";position:absolute;inset:0;background:rgba(11,59,52,.42);}
.head-figure .fig-cap{
  position:absolute;left:20px;right:20px;bottom:18px;z-index:2;color:#fff;
}
.fig-cap .fc-t{font-size:16px;font-weight:600;display:block;margin-bottom:4px;}
.fig-cap .fc-s{font-size:13px;color:var(--t-invert-sub);}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-badge);
  background:var(--c-amber-soft);color:#8A4E12;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(229,138,46,.35);margin-bottom:14px;
}

/* ------- 文档式布局 ------- */
.doc-section{padding:var(--sp-sec) 0;background:var(--c-page);}
.doc-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;align-items:start;}
.doc-toc{
  position:sticky;top:96px;background:var(--c-card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--sh-1);
}
.doc-toc h4{font-size:14px;color:var(--t-weak);letter-spacing:.1em;margin-bottom:14px;font-weight:600;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin:0;}
.toc-list a{
  display:flex;gap:10px;align-items:flex-start;padding:9px 10px;border-radius:8px;
  font-size:14.5px;color:var(--t-sub);line-height:1.55;border-left:3px solid transparent;text-decoration:none;
}
.toc-list a:hover{background:var(--c-alt);color:var(--c-primary);text-decoration:none;}
.toc-list a.current{background:var(--c-primary-soft);color:var(--c-primary-dark);border-left-color:var(--c-primary);font-weight:600;}
.toc-num{font-variant-numeric:tabular-nums;color:var(--c-amber);font-weight:700;font-size:12.5px;padding-top:3px;}
.doc-toc .toc-cta{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.doc-toc .toc-cta p{font-size:13.5px;color:var(--t-sub);margin-bottom:12px;line-height:1.7;}

.doc-sections{min-width:0;}
.doc-sec{scroll-margin-top:110px;padding-bottom:52px;margin-bottom:52px;border-bottom:1px solid var(--line);}
.doc-sec:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0;}
.sec-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px;}
.num-block{
  flex-shrink:0;width:44px;height:44px;border-radius:var(--r-num);background:var(--c-primary-soft);
  color:var(--c-primary-dark);font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;font-size:15px;
}
.doc-sec h2{font-size:clamp(21px,2.1vw,26px);}
.doc-sec p{color:var(--t-sub);font-size:16.5px;}
.sec-points{list-style:none;padding:0;margin:18px 0 0;}
.sec-points li{
  position:relative;padding:14px 18px 14px 44px;background:var(--c-card);border:1px solid var(--line);
  border-radius:var(--r-card);margin-bottom:10px;font-size:15.5px;color:var(--t-sub);box-shadow:var(--sh-1);
}
.sec-points li::before{
  content:"";position:absolute;left:18px;top:22px;width:8px;height:8px;background:var(--c-primary);border-radius:2px;
}
.sec-points li strong{color:var(--t-main);}
.sec-steps{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px;}
.sec-steps li{
  display:grid;grid-template-columns:38px 1fr;gap:14px;align-items:start;
  background:var(--c-alt);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px;
}
.sec-steps .st-n{
  width:32px;height:32px;border-radius:var(--r-num);background:var(--c-deep);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.sec-steps .st-t{font-weight:600;color:var(--t-main);font-size:15.5px;display:block;}
.sec-steps .st-d{font-size:14.5px;color:var(--t-sub);}
.note-box{
  margin-top:20px;padding:18px 20px;background:var(--c-primary-soft);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;font-size:15.5px;color:var(--c-primary-dark);
}
.sec-figure{margin:22px 0 0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);}
.sec-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}

/* ------- 卡片矩阵 ------- */
.matrix-section{padding:var(--sp-sec) 0;background:var(--c-card);border-top:1px solid var(--line);}
.sec-title-block{max-width:760px;margin-bottom:44px;}
.sec-title-block .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--c-amber);
  text-transform:uppercase;margin-bottom:12px;
}
.sec-title-block p{font-size:17px;color:var(--t-sub);margin:14px 0 0;}
.matrix{display:grid;grid-template-columns:1.08fr .92fr;gap:26px;align-items:start;}
.matrix-col{display:grid;gap:26px;}
.card{
  background:var(--c-card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;transition:var(--tr);height:100%;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.card-media{overflow:hidden;background:var(--c-primary-soft);}
.card-media img{width:100%;object-fit:cover;border-radius:0;transition:transform var(--tr);}
.card:hover .card-media img{transform:scale(1.03);}
.card-media.tall img{aspect-ratio:16/10;}
.card-media.mid img{aspect-ratio:3/2;}
.card-media.short img{aspect-ratio:4/3;}
.card-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:19px;}
.card-body p{font-size:15.5px;color:var(--t-sub);margin:0;}
.card-body .link-arrow{margin-top:auto;}
.card-plain{padding:26px;background:var(--c-alt);border:1px solid var(--line);border-radius:var(--r-card);}
.card-plain h3{font-size:18px;margin-bottom:10px;}
.card-plain p{font-size:15px;color:var(--t-sub);margin:0 0 14px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px;}
.tag{
  display:inline-block;padding:4px 10px;border-radius:var(--r-badge);font-size:12.5px;font-weight:600;
  background:var(--c-alt);color:var(--t-sub);border:1px solid var(--line);
}
.tag.amber{background:var(--c-amber-soft);color:#8A4E12;border-color:rgba(229,138,46,.32);}
.tag.green{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:rgba(14,107,92,.2);}

/* ------- FAQ ------- */
.faq-section{padding:var(--sp-sec) 0;background:var(--c-alt);border-top:1px solid var(--line);}
.faq-grid{display:grid;grid-template-columns:.85fr 1.4fr;gap:52px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside p{color:var(--t-sub);font-size:16.5px;margin:16px 0 24px;}
.accordion{--bs-accordion-border-color:transparent;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--c-card);}
.accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent;}
.accordion-item:last-child{border-bottom:none;}
.accordion-button{
  background:transparent;color:var(--t-main);font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 22px;box-shadow:none;border-left:3px solid transparent;transition:var(--tr);
}
.accordion-button:not(.collapsed){color:var(--c-primary-dark);background:var(--c-alt);border-left-color:var(--c-primary);}
.accordion-button:hover{background:var(--c-alt);}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-2px;}
.accordion-button::after{
  content:"";width:12px;height:12px;border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  background-image:none;transform:rotate(45deg);transition:transform var(--tr);margin-left:16px;flex-shrink:0;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);}
.accordion-body{padding:4px 22px 22px;color:var(--t-sub);font-size:15.5px;line-height:1.85;border-left:3px solid var(--c-primary);}

/* ------- CTA 条 ------- */
.cta-strip{background:var(--c-deep);color:#fff;position:relative;overflow:hidden;padding:64px 0;}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-strip h2{color:#fff;font-size:clamp(21px,2.2vw,28px);margin-bottom:10px;}
.cta-strip p{color:var(--t-invert-sub);margin:0;font-size:16px;max-width:620px;}

/* ------- 表单小件 ------- */
.input,.form-control{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-input);border:1px solid var(--line);
  background:#fff;color:var(--t-main);font-size:15px;transition:var(--tr);
}
.input:focus,.form-control:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(14,107,92,.14);outline:none;}
.form-label{font-size:14px;color:var(--t-sub);margin-bottom:6px;display:block;}
.form-hint{font-size:13px;color:var(--c-amber);}

/* ------- 页脚 ------- */
.site-footer{background:var(--c-deep);color:var(--t-invert-sub);padding:64px 0 0;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.site-footer .brand-text .b1{color:#fff;}
.site-footer .brand-text .b2{color:var(--t-invert-sub);}
.site-footer .brand-mark span{background:#fff;opacity:.85;}
.site-footer .brand-mark span:nth-child(2),
.site-footer .brand-mark span:nth-child(4),
.site-footer .brand-mark span:nth-child(6),
.site-footer .brand-mark span:nth-child(8){background:var(--c-amber);opacity:1;}
.site-footer .brand:hover{text-decoration:none;}
.footer-brand p{color:var(--t-invert-sub);font-size:14.5px;margin:18px 0 16px;line-height:1.85;}
.footer-contact{list-style:none;padding:0;margin:0;font-size:14px;color:var(--t-invert-sub);}
.footer-contact li{margin-bottom:6px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-col a{display:block;color:var(--t-invert-sub);font-size:14.5px;padding:5px 0;text-decoration:none;}
.footer-col a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  border-top:1px solid var(--line-invert);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;
}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;}
.footer-links a{color:var(--t-invert-sub);text-decoration:none;}
.footer-links a:hover{color:#fff;text-decoration:none;}

/* ------- 移动端抽屉 ------- */
.offcanvas{background:#fff;}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--t-main);}
.mobile-nav{list-style:none;margin:0;padding:8px 0;}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 6px;
  font-size:16px;color:var(--t-main);text-decoration:none;border-bottom:1px solid var(--line);
}
.mobile-nav a:hover{color:var(--c-primary);text-decoration:none;}
.mobile-nav a.active{color:var(--c-primary);font-weight:600;}
.mobile-nav a svg{width:16px;height:16px;color:var(--t-weak);}
.mobile-foot{margin-top:20px;display:grid;gap:10px;}

/* ------- 响应式 ------- */
@media (max-width:1199.98px){
  :root{--sp-sec:80px;}
  .doc-layout{gap:36px;}
  .nav-main a{padding:0 10px;font-size:14.5px;}
}
@media (max-width:991.98px){
  :root{--sp-sec:70px;}
  .nav-main,.header-actions .btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{gap:12px;}
  .head-grid{grid-template-columns:1fr;gap:28px;}
  .head-figure{max-width:560px;}
  .doc-layout{grid-template-columns:1fr;gap:28px;}
  .doc-toc{position:static;padding:14px;border-radius:var(--r-card);}
  .doc-toc h4{display:none;}
  .doc-toc .toc-cta{display:none;}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;}
  .toc-list li{flex:0 0 auto;}
  .toc-list a{white-space:nowrap;border-left:none;border:1px solid var(--line);padding:8px 14px;}
  .toc-list a.current{border-color:var(--c-primary);}
  .toc-num{display:none;}
  .matrix{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  :root{--sp-sec:60px;}
  body{font-size:16px;}
  .wrap{padding:0 16px;}
  .topbar-note,.topbar-right a:nth-child(3){display:none;}
  .topbar-inner{gap:10px;}
  .topbar-right{gap:12px;}
  .page-head{padding:20px 0 48px;}
  .head-lead{font-size:16.5px;}
  .head-cta .btn{width:100%;}
  .doc-toc{padding:12px;}
  .accordion-button{font-size:16px;padding:16px 16px;}
  .accordion-body{padding:2px 16px 18px;}
  .cta-strip{padding:48px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575.98px){
  .brand-text .b1{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .card-body{padding:20px;}
}