/* roulang page: index */
:root{
  --brand-900:#0B2B24;
  --brand-700:#145744;
  --brand-600:#1F6F5C;
  --brand-400:#3FA98A;
  --brand-200:#A9DCC9;
  --accent-500:#F2A65A;
  --accent-600:#E08A2E;
  --ink-900:#12211D;
  --ink-600:#4A5D57;
  --ink-400:#7E918A;
  --bg:#F5F7F4;
  --bg-alt:#EDF2EE;
  --surface:#FFFFFF;
  --line:#DFE7E2;
  --panel-dark:#12211D;
  --grad-brand:linear-gradient(135deg,#145744 0%,#2E9E7D 55%,#7FD1B9 100%);
  --grad-soft:linear-gradient(135deg,rgba(31,111,92,.10) 0%,rgba(127,209,185,.18) 100%);
  --shadow-sm:0 1px 2px rgba(11,43,36,.06),0 2px 8px rgba(11,43,36,.05);
  --shadow-md:0 8px 24px rgba(11,43,36,.08);
  --shadow-lg:0 18px 48px rgba(11,43,36,.12);
  --shadow-brand:0 12px 28px rgba(31,111,92,.24);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --ease:.25s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:-.01em}
h1{font-size:44px;line-height:1.22;font-weight:700}
h2{font-size:30px;line-height:1.3}
h3{font-size:21px;line-height:1.45}
p{margin:0}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-700)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--brand-200);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ---------- 通用组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:rgba(31,111,92,.09);border:1px solid rgba(31,111,92,.16);
  padding:6px 14px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
.eyebrow.on-dark{color:#CFEDE1;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.24)}
.eyebrow.on-dark::before{background:var(--accent-500)}
.sec{padding:84px 0}
.sec-sm{padding:60px 0}
.sec-alt{background:var(--bg-alt)}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head h2{margin-top:14px}
.sec-head p{margin-top:12px;font-size:16px;color:var(--ink-600)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.grad-text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:none;border-radius:999px;
  background:var(--grad-brand);color:#fff;font-weight:600;font-size:15px;
  box-shadow:var(--shadow-brand);cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
}
.btn-brand:hover{color:#fff;filter:brightness(1.06);box-shadow:0 16px 34px rgba(31,111,92,.30);transform:translateY(-1px)}
.btn-brand:active{transform:scale(.98)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-700);font-weight:600;font-size:15px;
  cursor:pointer;transition:all var(--ease);
}
.btn-ghost:hover{border-color:var(--brand-400);color:var(--brand-700);background:#fff;box-shadow:var(--shadow-sm)}
.btn-ghost:active{transform:scale(.98)}
.btn-light-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;border:1px solid rgba(255,255,255,.44);
  background:rgba(255,255,255,.08);color:#fff;font-weight:600;font-size:15px;
  cursor:pointer;transition:all var(--ease);
}
.btn-light-line:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.7)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--brand-700);
  background:var(--surface);border:1px solid var(--line);
  padding:5px 12px;border-radius:999px;
}
.tag.solid{background:var(--grad-brand);color:#fff;border-color:transparent}
.icon-sq{
  width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad-soft);border:1px solid rgba(31,111,92,.14);color:var(--brand-700);flex:0 0 auto;
}
.icon-sq svg{width:22px;height:22px}
.divider-dot{width:4px;height:4px;border-radius:50%;background:var(--ink-400);display:inline-block;margin:0 10px;opacity:.6}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0;background:rgba(245,247,244,.86);backdrop-filter:blur(12px);transition:box-shadow var(--ease),background var(--ease)}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(11,43,36,.10)}
.nav-card{
  display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{color:inherit}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--grad-brand);box-shadow:0 6px 14px rgba(31,111,92,.28);position:relative}
.brand-mark::after{content:"";position:absolute;inset:9px 9px 9px 9px;border-radius:3px;background:rgba(255,255,255,.85)}
.brand-text{font-size:18px;font-weight:700;color:var(--brand-900);letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:500;color:var(--ink-600);
  transition:all var(--ease);white-space:nowrap;
}
.nav-item svg{width:18px;height:18px;opacity:.75}
.nav-item:hover{background:var(--bg-alt);color:var(--brand-700)}
.nav-item.active{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px rgba(31,111,92,.22)}
.nav-item.active svg{opacity:1}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);color:var(--brand-700);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px}
@media (max-width:991px){
  .nav-card{flex-wrap:wrap}
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none;width:100%;margin:10px 0 4px;padding-top:12px;
    border-top:1px solid var(--line);flex-direction:column;align-items:stretch;gap:8px;
  }
  .nav-links.open{display:flex}
  .nav-item{padding:12px 14px;border:1px solid var(--line);border-radius:14px}
  .nav-cta{width:100%;margin:4px 0 0}
}

/* ---------- Hero ---------- */
.hero-shell{padding-top:8px}
.hero{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background-image:
    linear-gradient(118deg,rgba(11,43,36,.95) 0%,rgba(20,87,68,.90) 46%,rgba(31,111,92,.74) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#EAF4EF;box-shadow:var(--shadow-lg);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.hero-inner{position:relative;z-index:2;padding:66px 56px 60px;display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}
.hero h1{color:#fff;font-size:46px;margin-top:20px}
.hero .lead{margin-top:18px;font-size:17px;line-height:1.9;color:#D3E7DE;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.stat-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.stat-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
}
.stat-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:0 0 auto}
.stat-badge b{font-size:24px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1}
.stat-badge span{font-size:13px;color:#C6DFD6}
.hero-visual{position:relative}
.hero-photo{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.22);box-shadow:0 24px 60px rgba(4,20,16,.42);
}
.float-card{
  position:absolute;right:-8px;bottom:-26px;width:268px;
  background:rgba(255,255,255,.97);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--shadow-lg);color:var(--ink-600);
}
.float-card strong{display:block;color:var(--ink-900);font-size:15px;font-weight:600}
.float-card .mini{margin-top:10px;display:flex;justify-content:space-between;font-size:13px;color:var(--ink-400)}
.float-card .mini b{color:var(--brand-700);font-variant-numeric:tabular-nums}
@media (max-width:1199px){
  .hero-inner{padding:56px 40px 52px;grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:38px}
  .float-card{position:static;width:100%;margin-top:18px}
}
@media (max-width:767px){
  .hero-inner{padding:40px 24px 40px}
  .hero h1{font-size:29px;line-height:1.3}
  .hero .lead{font-size:16px}
  .hero-actions .btn-brand,.hero-actions .btn-light-line{width:100%}
  .stat-badge{padding:9px 14px}
  .stat-badge b{font-size:20px}
}

/* ---------- 目录区 ---------- */
.toc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.toc-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.toc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200);color:inherit}
.toc-num{font-size:13px;font-weight:700;color:var(--brand-400);letter-spacing:.12em;font-variant-numeric:tabular-nums}
.toc-card h3{font-size:19px}
.toc-card p{font-size:14.5px;line-height:1.8;color:var(--ink-400)}
.toc-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--brand-700);font-weight:600}
.toc-foot svg{width:16px;height:16px}
@media (max-width:1199px){.toc-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.toc-grid{grid-template-columns:1fr;gap:16px}}

/* ---------- 精选条目 ---------- */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pick-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200)}
.pick-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-200),var(--brand-400))}
.pick-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.3,1)}
.pick-card:hover .pick-media img{transform:scale(1.04)}
.pick-media .tag{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);border-color:transparent}
.pick-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.pick-body h3{font-size:19px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-body p{font-size:14.5px;line-height:1.8;color:var(--ink-400);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pick-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--ink-400);font-variant-numeric:tabular-nums}
.pick-foot .more{color:var(--brand-700);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.pick-foot .more svg{width:15px;height:15px}
.pick-wide{grid-column:span 2;flex-direction:row;align-items:stretch}
.pick-wide .pick-media{aspect-ratio:auto;width:47%;min-height:280px}
.pick-wide .pick-body{width:53%;justify-content:center;padding:32px 34px}
.pick-wide .pick-body h3{font-size:24px;-webkit-line-clamp:3}
.pick-wide .pick-body p{-webkit-line-clamp:3;font-size:15px}
@media (max-width:1199px){
  .pick-grid{grid-template-columns:repeat(2,1fr)}
  .pick-wide{grid-column:span 2;flex-direction:column}
  .pick-wide .pick-media,.pick-wide .pick-body{width:100%}
  .pick-wide .pick-media{aspect-ratio:16/9;min-height:0}
}
@media (max-width:767px){
  .pick-grid{grid-template-columns:1fr;gap:18px}
  .pick-wide{grid-column:span 1}
  .pick-wide .pick-body{padding:24px}
}

/* ---------- CMS 列表 ---------- */
.post-card{
  height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200)}
.post-media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-200),var(--brand-400))}
.post-media img{width:100%;height:100%;object-fit:cover}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:17.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a{color:var(--ink-900)}
.post-body h3 a:hover{color:var(--brand-700)}
.post-body p{font-size:14px;line-height:1.8;color:var(--ink-400);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums}
.post-foot .go{color:var(--brand-700);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.post-foot .go svg{width:15px;height:15px}
.empty-state{
  width:100%;padding:44px 28px;text-align:center;border-radius:var(--r-lg);
  border:1px dashed var(--line);background:var(--surface);box-shadow:var(--shadow-sm);
}
.empty-state .icon-sq{margin:0 auto 16px;width:52px;height:52px}
.empty-state strong{display:block;color:var(--ink-900);font-size:17px}
.empty-state p{margin-top:8px;font-size:14.5px;color:var(--ink-400)}
.empty-state .btn-ghost{margin-top:20px}

/* ---------- 相关推荐（细描边） ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rec-card{
  border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);
  padding:22px 22px 20px;transition:all var(--ease);
}
.rec-card:hover{border-color:var(--brand-200);transform:translateY(-3px);background:#fff}
.rec-card h3{font-size:16.5px;margin-top:14px}
.rec-card p{margin-top:8px;font-size:13.5px;color:var(--ink-400);line-height:1.8}
@media (max-width:1199px){.rec-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.rec-grid{grid-template-columns:1fr}}

/* ---------- CTA 条 ---------- */
.cta-band{
  border-radius:var(--r-xl);padding:36px 40px;
  background:var(--grad-soft);border:1px solid rgba(31,111,92,.16);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:25px}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:640px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto}
@media (max-width:991px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{flex:1}
}
@media (max-width:575px){.cta-actions{flex-direction:column}}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item.open{border-color:var(--brand-200);box-shadow:var(--shadow-md)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:none;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink-900);
}
.faq-q .ind{
  width:30px;height:30px;flex:0 0 auto;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-700);
  transition:all var(--ease);
}
.faq-q .ind svg{width:15px;height:15px;transition:transform var(--ease)}
.faq-item.open .faq-q .ind{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
.faq-item.open .faq-q .ind svg{transform:rotate(45deg)}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-600)}
.faq-item.open .faq-a{display:block}

/* ---------- 表单 ---------- */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--shadow-sm);
}
.form-card h2{font-size:26px}
.form-card .tip{margin-top:10px;font-size:15px;color:var(--ink-600)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:span 2}
.field label{font-size:14px;font-weight:600;color:var(--ink-900)}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 16px;border-radius:14px;
  border:1px solid var(--line);background:var(--bg);color:var(--ink-900);font-size:15px;
  transition:border-color var(--ease),background var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.8}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);background:#fff}
.form-foot{grid-column:span 2;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:6px}
.form-foot span{font-size:13.5px;color:var(--ink-400)}
@media (max-width:767px){
  .form-card{padding:24px}
  .form-grid{grid-template-columns:1fr}
  .field.full,.form-foot{grid-column:span 1}
  .form-foot .btn-brand{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--panel-dark);color:#C6D6D0;padding:66px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600}
.site-footer p{font-size:14px;line-height:1.9;color:#9FB5AE}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand span{color:#fff;font-size:18px;font-weight:700}
.footer-links li+li{margin-top:11px}
.site-footer a{color:#C6D6D0;font-size:14.5px}
.site-footer a:hover{color:var(--accent-500)}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:#C6D6D0;margin-bottom:12px}
.footer-contact svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;color:var(--brand-400)}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8AA09A;
}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;align-items:flex-start}}

/* roulang page: article */
:root{
  --brand-900:#0B2B24;
  --brand-700:#145744;
  --brand-600:#1F6F5C;
  --brand-400:#3FA98A;
  --brand-200:#A9DCC9;
  --accent-500:#F2A65A;
  --accent-600:#E08A2E;
  --ink-900:#12211D;
  --ink-600:#4A5D57;
  --ink-400:#7E918A;
  --bg:#F5F7F4;
  --bg-alt:#EDF2EE;
  --surface:#FFFFFF;
  --line:#DFE7E2;
  --panel-dark:#12211D;
  --grad-brand:linear-gradient(135deg,#145744 0%,#2E9E7D 55%,#7FD1B9 100%);
  --shadow-sm:0 1px 2px rgba(11,43,36,.06),0 2px 8px rgba(11,43,36,.05);
  --shadow-md:0 8px 24px rgba(11,43,36,.08);
  --shadow-lg:0 18px 48px rgba(11,43,36,.12);
  --shadow-brand:0 12px 28px rgba(31,111,92,.24);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --t:.25s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-400);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:600;letter-spacing:-.01em;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus{outline:none;}
:focus-visible{outline:3px solid var(--brand-200);outline-offset:2px;border-radius:8px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.wrap{max-width:1320px;}}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:16px 0 0;background:transparent;transition:padding var(--t);}
.nav-card{
  display:flex;align-items:center;gap:18px;
  padding:12px 14px 12px 18px;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(1.4) blur(10px);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--t),border-color var(--t);
}
.site-header.is-stuck{padding-top:8px;}
.site-header.is-stuck .nav-card{box-shadow:var(--shadow-md);border-color:var(--brand-200);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;border-radius:9px;
  background:var(--grad-brand);
  box-shadow:var(--shadow-brand);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:3px;
  background:rgba(255,255,255,.9);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 14px;border-radius:12px;
  color:var(--ink-600);font-size:14.5px;font-weight:500;
  border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.nav-item svg{width:19px;height:19px;flex:0 0 auto;}
.nav-item:hover{background:var(--bg-alt);color:var(--brand-700);border-color:var(--line);}
.nav-item.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--shadow-brand);}
.nav-item.active svg{stroke:#fff;}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;
  background:var(--grad-brand);color:#fff;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  box-shadow:var(--shadow-brand);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
  border:1px solid rgba(255,255,255,.12);
}
.btn-brand:hover{color:#fff;filter:brightness(1.06);box-shadow:0 16px 34px rgba(31,111,92,.3);transform:translateY(-1px);}
.btn-brand:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  background:var(--surface);color:var(--brand-700);
  border:1px solid var(--line);font-size:14.5px;font-weight:600;
  box-shadow:var(--shadow-sm);
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.btn-ghost:hover{border-color:var(--brand-400);color:var(--brand-700);background:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.98);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);color:var(--brand-700);
  align-items:center;justify-content:center;margin-left:auto;
}
.nav-toggle svg{width:22px;height:22px;}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:absolute;left:20px;right:20px;top:calc(100% + 10px);
    display:none;grid-template-columns:1fr 1fr;gap:10px;margin:0;
    padding:14px;background:var(--surface);
    border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--shadow-lg);
  }
  .nav-links.open{display:grid;}
  .nav-item{width:100%;padding:12px 14px;font-size:14px;}
  .nav-cta{grid-column:1 / -1;width:100%;margin-top:4px;}
  .nav-card{position:relative;}
}

/* ---------- breadcrumb ---------- */
.page-top{padding:26px 0 8px;}
.crumbs{
  display:inline-flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-400);box-shadow:var(--shadow-sm);
}
.crumbs a{color:var(--ink-600);}
.crumbs a:hover{color:var(--brand-600);}
.crumbs .sep{color:var(--brand-200);}
.crumbs .current{color:var(--brand-700);font-weight:600;}

/* ---------- article head ---------- */
.article-head{padding:28px 0 8px;}
.article-head-inner{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);
  padding:34px 38px 30px;
}
.cat-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(31,111,92,.08);border:1px solid var(--brand-200);
  color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.cat-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);}
.article-title{
  font-size:44px;line-height:1.22;font-weight:700;letter-spacing:-.01em;
  margin:16px 0 18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;
  font-size:14px;color:var(--ink-400);font-variant-numeric:tabular-nums;
  padding-top:18px;border-top:1px dashed var(--line);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--brand-400);font-size:14px;}
.cover-frame{
  margin:24px 0 0;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);background:var(--bg-alt);
}
.cover-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- layout ---------- */
.main-body{padding:40px 0 8px;}
.reader-col{max-width:820px;margin:0 auto;}
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);
  padding:38px 40px;
}
/* prose */
.prose{font-size:17px;line-height:1.95;color:var(--ink-600);}
.prose > *:first-child{margin-top:0;}
.prose h2{
  font-size:29px;line-height:1.35;margin:44px 0 16px;padding-left:14px;
  border-left:4px solid var(--brand-600);color:var(--ink-900);
}
.prose h3{font-size:21px;margin:32px 0 12px;color:var(--ink-900);}
.prose h4{font-size:18px;margin:26px 0 10px;color:var(--ink-900);}
.prose p{margin:0 0 18px;}
.prose a{color:var(--brand-600);border-bottom:1px solid var(--brand-200);}
.prose a:hover{color:var(--brand-400);}
.prose strong{color:var(--ink-900);font-weight:600;}
.prose ul,.prose ol{margin:0 0 20px;padding-left:0;}
.prose ul li,.prose ol li{position:relative;padding-left:26px;margin-bottom:10px;list-style:none;}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:2px;
  background:var(--brand-400);transform:translateY(-50%);
}
.prose ol{counter-reset:item;}
.prose ol li{counter-increment:item;}
.prose ol li::before{
  content:counter(item);position:absolute;left:0;top:.28em;
  width:18px;height:18px;border-radius:6px;background:rgba(31,111,92,.1);
  color:var(--brand-700);font-size:12px;font-weight:700;line-height:18px;text-align:center;
}
.prose blockquote{
  margin:24px 0;padding:18px 22px;background:var(--bg-alt);
  border-left:3px solid var(--brand-600);border-radius:12px;color:var(--ink-600);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:16px;margin:22px 0;border:1px solid var(--line);}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.prose th{background:var(--bg-alt);color:var(--ink-900);font-weight:600;}
.prose hr{border:0;border-top:1px dashed var(--line);margin:32px 0;}

/* empty state */
.empty-state{
  text-align:center;padding:44px 28px;border-radius:var(--r-lg);
  border:1px dashed var(--line);background:var(--surface);
}
.empty-state .icon{
  width:48px;height:48px;margin:0 auto 16px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-alt);color:var(--brand-600);font-size:22px;
}
.empty-state h3{font-size:20px;margin-bottom:8px;}
.empty-state p{font-size:14.5px;color:var(--ink-400);margin-bottom:20px;}

/* ---------- tags + share ---------- */
.after-block{margin-top:26px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;background:var(--surface);
  border:1px solid var(--line);color:var(--ink-600);font-size:13px;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.tag:hover{border-color:var(--brand-400);color:var(--brand-700);background:#fff;}
.cta-bar{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;
  padding:26px 30px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(20,87,68,.06),rgba(127,209,185,.18));
  border:1px solid var(--brand-200);
}
.cta-bar h3{font-size:20px;margin-bottom:6px;}
.cta-bar p{font-size:14.5px;color:var(--ink-600);margin:0;}
.cta-bar .actions{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- related ---------- */
.section{padding:56px 0;}
.section.alt{background:var(--bg-alt);}
.section-head{display:flex;align-items:flex-end;gap:16px;margin-bottom:26px;flex-wrap:wrap;}
.section-head h2{font-size:30px;line-height:1.3;}
.section-head p{margin:0;font-size:14.5px;color:var(--ink-400);}
.section-head .line{flex:1;height:1px;background:var(--line);min-width:40px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.item-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.item-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200);}
.item-card .thumb{position:relative;background:linear-gradient(135deg,var(--brand-200),var(--brand-400));}
.item-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.item-card .thumb .badge-float{
  position:absolute;left:12px;top:12px;
  padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.9);color:var(--brand-700);
  font-size:12px;font-weight:600;
}
.item-card .body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1;}
.item-card h3{font-size:19px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.item-card h3 a{color:var(--ink-900);}
.item-card h3 a:hover{color:var(--brand-600);}
.item-card .excerpt{
  font-size:14.5px;color:var(--ink-400);margin-bottom:18px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.item-card .foot{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;
}
.item-card .foot .arrow{color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.item-card:hover .foot .arrow{gap:10px;}
.item-card .foot .arrow{transition:gap var(--t);}

/* ---------- guide grid ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.guide-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-200);}
.guide-card .ico{
  width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--grad-brand);color:#fff;font-size:18px;margin-bottom:16px;
  box-shadow:var(--shadow-brand);
}
.guide-card h3{font-size:19px;margin-bottom:10px;}
.guide-card p{font-size:14.5px;color:var(--ink-400);margin:0;line-height:1.85;}

/* ---------- subscribe ---------- */
.sub-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:32px;
  display:flex;gap:26px;align-items:center;flex-wrap:wrap;
}
.sub-card h2{font-size:26px;margin-bottom:8px;}
.sub-card p{font-size:14.5px;color:var(--ink-400);margin:0;max-width:520px;}
.sub-form{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap;align-items:center;}
.sub-form label{font-size:13.5px;color:var(--ink-400);width:100%;margin-bottom:-4px;}
.sub-form input[type="email"]{
  height:48px;min-width:280px;padding:0 16px;border-radius:14px;
  border:1px solid var(--line);background:var(--bg);
  color:var(--ink-900);transition:border-color var(--t),background var(--t);
}
.sub-form input[type="email"]:focus{border-color:var(--brand-600);background:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--panel-dark);color:rgba(255,255,255,.72);margin-top:24px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 36px;}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;font-size:17px;font-weight:700;}
.footer-brand .brand-mark{box-shadow:none;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;}
.footer-links li,.footer-contact li{margin-bottom:11px;font-size:14px;}
.footer-links a{color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--accent-500);}
.footer-contact li{display:flex;align-items:center;gap:9px;color:rgba(255,255,255,.72);}
.footer-contact i,.footer-contact svg{width:18px;height:18px;color:var(--brand-400);flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:18px 0 24px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);font-variant-numeric:tabular-nums;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-title{font-size:38px;}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
}
@media (max-width:991px){
  .article-title{font-size:32px;}
  .article-head-inner{padding:26px 24px 22px;}
  .panel{padding:28px 24px;}
  .prose h2{font-size:24px;}
  .card-grid,.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px;}
  .cta-bar .actions{margin-left:0;width:100%;}
  .sub-form{margin-left:0;width:100%;}
  .sub-form input[type="email"]{flex:1;min-width:0;}
}
@media (max-width:575px){
  body{font-size:15.5px;}
  .site-header{padding-top:12px;}
  .wrap{padding:0 16px;}
  .article-title{font-size:27px;}
  .article-head-inner{padding:22px 18px 18px;}
  .meta-row{gap:8px 16px;font-size:13.5px;}
  .panel{padding:22px 18px;border-radius:var(--r-md);}
  .prose{font-size:16.5px;line-height:1.9;}
  .prose h2{font-size:21px;}
  .card-grid,.guide-grid{grid-template-columns:1fr;}
  .cta-bar{padding:22px 20px;border-radius:var(--r-md);}
  .footer-grid{grid-template-columns:1fr;padding:36px 0 22px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn-brand,.btn-ghost{min-height:44px;}
  .sub-card{padding:24px 20px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2B24;--brand-700:#145744;--brand-600:#1F6F5C;--brand-400:#3FA98A;--brand-200:#A9DCC9;
  --accent-500:#F2A65A;--accent-600:#E08A2E;
  --ink-900:#12211D;--ink-600:#4A5D57;--ink-400:#7E918A;
  --bg:#F5F7F4;--bg-alt:#EDF2EE;--surface:#FFFFFF;--line:#DFE7E2;--panel-dark:#12211D;
  --grad-brand:linear-gradient(135deg,#145744 0%,#2E9E7D 55%,#7FD1B9 100%);
  --shadow-sm:0 1px 2px rgba(11,43,36,.06),0 2px 8px rgba(11,43,36,.05);
  --shadow-md:0 8px 24px rgba(11,43,36,.08);
  --shadow-lg:0 18px 48px rgba(11,43,36,.12);
  --shadow-brand:0 12px 28px rgba(31,111,92,.24);
  --r-lg:24px;--r-md:20px;--r-sm:16px;
  --ease:.25s cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-600);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-600)}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:600;line-height:1.3}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--brand-200);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1400px){.wrap{max-width:1320px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:200;padding-top:16px;transition:padding var(--ease)}
.site-header.is-stuck{padding-top:10px}
.nav-card{
  position:relative;display:flex;align-items:center;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:12px 18px;box-shadow:var(--shadow-sm);transition:box-shadow var(--ease);
}
.site-header.is-stuck .nav-card{box-shadow:var(--shadow-md)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-size:18px;font-weight:700;color:var(--ink-900)}
.brand:hover{color:var(--brand-700)}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--grad-brand);box-shadow:var(--shadow-brand);display:inline-block;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:12px;
  font-size:15px;color:var(--ink-600);border:1px solid transparent;transition:var(--ease);white-space:nowrap;
}
.nav-item svg{width:20px;height:20px;flex:0 0 auto}
.nav-item:hover{background:var(--bg-alt);color:var(--brand-700)}
.nav-item.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--shadow-brand)}
.nav-cta{padding:11px 20px;font-size:15px}
.nav-toggle{
  display:none;margin-left:auto;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-700);cursor:pointer;transition:var(--ease);
}
.nav-toggle svg{width:22px;height:22px}
.nav-toggle:hover{background:var(--bg-alt)}

/* ============ 按钮 ============ */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:var(--ease);text-align:center;
}
.btn-brand{background:var(--grad-brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(31,111,92,.3);filter:brightness(1.05)}
.btn-brand:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-200)}
.btn-ghost:hover{background:var(--brand-200);color:var(--brand-900);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-ghost-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:#fff;color:var(--brand-700);transform:translateY(-2px)}

/* ============ 通用 ============ */
.section{padding:76px 0}
@media(max-width:767px){.section{padding:44px 0}}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--ink-600);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--brand-700);margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
.bg-alt{background:var(--bg-alt)}
.pill{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--brand-700);
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-400)}

/* ============ 面包屑 ============ */
.crumbs{margin-top:24px}
.crumbs-inner{
  display:inline-flex;flex-wrap:wrap;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 18px;font-size:13.5px;color:var(--ink-400);
}
.crumbs-inner a{color:var(--ink-600)}
.crumbs-inner a:hover{color:var(--brand-600)}
.crumbs-inner .sep{color:var(--ink-400)}
.crumbs-inner .current{color:var(--brand-700);font-weight:600}

/* ============ 分类头图 ============ */
.cat-hero{position:relative;overflow:hidden;border-radius:var(--r-lg);margin-top:20px;padding:70px 44px;background:var(--brand-900);color:#fff}
.cat-hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.cat-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(118deg,rgba(11,43,36,.94) 0%,rgba(20,87,68,.84) 46%,rgba(46,158,125,.6) 100%);
}
.cat-hero-inner{position:relative;z-index:2;max-width:760px}
.cat-hero h1{color:#fff;font-size:44px;font-weight:700;line-height:1.22;letter-spacing:-.01em;margin:16px 0 16px}
.cat-hero p.lead{color:#DCEDE6;font-size:17px;line-height:1.9;margin:0 0 26px;max-width:660px}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);color:#fff;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
.hero-badge b{font-size:20px;font-weight:700;color:#fff}
.hero-badge span{font-size:13px;color:#CFE6DD}

/* ============ 目录 + 内容 ============ */
.layout-row{padding-top:52px}
.toc-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-sm);
}
.toc-card h2{font-size:17px;margin-bottom:6px}
.toc-card .toc-note{font-size:13.5px;color:var(--ink-400);margin-bottom:16px}
.toc-list li+li{margin-top:8px}
.toc-list a{
  display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:12px;
  font-size:14.5px;color:var(--ink-600);border:1px solid transparent;transition:var(--ease);
}
.toc-list a .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-400);flex:0 0 auto}
.toc-list a:hover{background:var(--bg-alt);color:var(--brand-700);border-color:var(--line)}
.toc-list a.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.toc-list a.active .dot{background:#fff}
.toc-foot{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--ink-400)}
@media(min-width:992px){.toc-sticky{position:sticky;top:104px}}

.info-card{
  display:flex;gap:26px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-sm);
  transition:var(--ease);margin-bottom:24px;scroll-margin-top:110px;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200)}
.info-card .info-media{
  flex:0 0 292px;border-radius:18px;overflow:hidden;
  background:linear-gradient(135deg,var(--brand-200),var(--brand-400));
}
.info-card .info-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.info-card .info-body{flex:1 1 auto;min-width:0}
.info-card h2{font-size:22px;margin:12px 0 10px}
.info-card p{font-size:15.5px;line-height:1.9;color:var(--ink-600)}
.info-card.reverse{flex-direction:row-reverse}
.dot-list{margin-top:12px}
.dot-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.85;margin-bottom:8px}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;background:var(--brand-400);
}
@media(max-width:991px){
  .info-card,.info-card.reverse{flex-direction:column;gap:18px}
  .info-card .info-media{flex:none}
}

/* ============ 统计条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-sm);margin:12px 0 4px;
}
.stat-item{padding:6px 4px;border-left:2px solid var(--brand-200);padding-left:16px}
.stat-item b{display:block;font-size:26px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.4}
.stat-item span{font-size:13.5px;color:var(--ink-600)}
@media(max-width:991px){.stat-strip{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stat-strip{grid-template-columns:1fr}}

/* ============ 流程 ============ */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow-sm);transition:var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200)}
.step-num{
  width:40px;height:40px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
  box-shadow:var(--shadow-brand);margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{font-size:14.5px;margin:0;line-height:1.85}
@media(max-width:991px){.step-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.step-grid{grid-template-columns:1fr}}

/* ============ 相关推荐 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;transition:var(--ease);
}
.rel-card:hover{border-color:var(--brand-400);transform:translateY(-4px);background:#FBFDFB}
.rel-card .rel-icon{
  width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--bg-alt);color:var(--brand-700);font-size:18px;margin-bottom:14px;
}
.rel-card h3{font-size:18px;margin-bottom:10px}
.rel-card p{font-size:14.5px;line-height:1.85;margin-bottom:16px}
.rel-card .rel-link{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.rel-card .rel-link:hover{gap:10px}
@media(max-width:991px){.rel-grid{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-list{max-width:920px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;transition:var(--ease);
}
.faq-item:hover{border-color:var(--brand-200)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;padding:20px 24px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink-900);font-family:inherit;
}
.faq-q .faq-mark{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-700);
  transition:var(--ease);font-size:14px;
}
.faq-item.open{border-color:var(--brand-400);box-shadow:var(--shadow-md)}
.faq-item.open .faq-mark{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--ease)}
.faq-a p{padding:0 24px 20px;margin:0;font-size:15.5px;line-height:1.9;color:var(--ink-600)}

/* ============ CTA / 表单 ============ */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;gap:24px;
  background:linear-gradient(120deg,#E7F3ED 0%,#F5F7F4 60%,#FDF3E6 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 36px;
}
.cta-band .cta-text{flex:1 1 380px;min-width:0}
.cta-band h2{font-size:26px;margin-bottom:10px}
.cta-band p{margin:0;font-size:15.5px}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.sub-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow-sm);
}
.sub-card h2{font-size:24px;margin-bottom:10px}
.sub-card .sub-tip{font-size:15px;color:var(--ink-600);margin-bottom:22px}
.form-row{display:flex;gap:14px}
.form-field{flex:1 1 auto;min-width:0}
.form-field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.form-field input{
  width:100%;height:48px;border-radius:14px;border:1px solid var(--line);
  background:var(--bg);padding:0 16px;font-size:15px;color:var(--ink-900);font-family:inherit;transition:var(--ease);
}
.form-field input:focus{outline:none;border-color:var(--brand-600);background:#fff}
.form-field input::placeholder{color:var(--ink-400)}
.form-actions{display:flex;align-items:flex-end}
.form-actions .btn-brand{height:48px;padding:0 28px}
.form-note{font-size:13px;color:var(--ink-400);margin-top:14px}
@media(max-width:767px){
  .form-row{flex-direction:column}
  .form-actions .btn-brand{width:100%}
  .cta-band{padding:26px 22px}
  .sub-card{padding:24px 20px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--panel-dark);color:#B9CFC6;margin-top:20px;border-top:1px solid rgba(255,255,255,.08)}
.site-footer .wrap{padding-top:64px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:16px}
.site-footer h3{font-size:15px;color:#fff;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.9;color:#9FBBB0;margin:0}
.footer-links li,.footer-contact li{margin-bottom:11px}
.footer-links a{font-size:14px;color:#B9CFC6}
.footer-links a:hover{color:var(--accent-500)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#B9CFC6}
.footer-contact svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;color:var(--brand-400)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#8CA79C;
}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}

/* ============ 响应式导航 ============ */
@media(max-width:991px){
  .nav-card{flex-wrap:wrap}
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);margin-left:0;
    background:var(--surface);border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--shadow-lg);padding:14px;flex-direction:column;align-items:stretch;gap:8px;
  }
  .nav-links.open{display:flex}
  .nav-item{width:100%;padding:13px 14px}
  .nav-cta{width:100%;margin-top:6px;padding:14px 20px}
  .cat-hero{padding:52px 24px}
  .cat-hero h1{font-size:30px}
  .cat-hero p.lead{font-size:16px}
  .section-head h2{font-size:24px}
  .cta-band h2{font-size:22px}
  .info-card h2{font-size:20px}
}
@media(max-width:575px){
  .wrap{padding:0 16px}
  .cat-hero{padding:40px 20px;border-radius:20px}
  .cat-hero h1{font-size:27px}
  .btn-brand,.btn-ghost{padding:12px 20px;min-height:44px}
  .hero-badge{padding:8px 14px}
  .hero-badge b{font-size:18px}
  .stat-item b{font-size:22px}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2B24;
  --brand-700:#145744;
  --brand-600:#1F6F5C;
  --brand-400:#3FA98A;
  --brand-200:#A9DCC9;
  --accent-500:#F2A65A;
  --accent-600:#E08A2E;
  --ink-900:#12211D;
  --ink-600:#4A5D57;
  --ink-400:#7E918A;
  --bg:#F5F7F4;
  --bg-alt:#EDF2EE;
  --surface:#FFFFFF;
  --line:#DFE7E2;
  --panel-dark:#12211D;
  --grad-brand:linear-gradient(135deg,#145744 0%,#2E9E7D 55%,#7FD1B9 100%);
  --shadow-sm:0 1px 2px rgba(11,43,36,.06),0 2px 8px rgba(11,43,36,.05);
  --shadow-md:0 8px 24px rgba(11,43,36,.08);
  --shadow-lg:0 18px 48px rgba(11,43,36,.12);
  --shadow-brand:0 12px 28px rgba(31,111,92,.24);
  --ease:.25s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink-600);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4,h5{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--brand-200);outline-offset:2px;border-radius:8px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;padding:16px 0 10px;background:transparent;transition:padding var(--ease)}
.site-header.is-stuck{padding:10px 0}
.nav-card{
  position:relative;
  display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:20px;
  padding:12px 16px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--ease),border-color var(--ease)
}
.site-header.is-stuck .nav-card{box-shadow:var(--shadow-md);border-color:var(--brand-200)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--grad-brand);position:relative;flex:0 0 auto;box-shadow:var(--shadow-brand)}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:4px;border:1.5px solid rgba(255,255,255,.85)}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand-700)}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:14px;color:var(--brand-700);cursor:pointer;
  transition:background var(--ease),border-color var(--ease)
}
.nav-toggle:hover{background:var(--bg-alt);border-color:var(--brand-200)}
.nav-toggle svg{width:22px;height:22px}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;
  font-size:14.5px;font-weight:600;color:var(--ink-600);
  border:1px solid transparent;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease)
}
.nav-item svg{width:20px;height:20px;flex:0 0 auto}
.nav-item:hover{background:var(--bg-alt);color:var(--brand-700);border-color:var(--line)}
.nav-item.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--shadow-brand)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  background:var(--grad-brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--shadow-brand);cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease),color var(--ease)
}
.btn-brand:hover{color:#fff;filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 16px 34px rgba(31,111,92,.3)}
.btn-brand:active{transform:scale(.98)}
.nav-cta{margin-left:10px;height:44px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--brand-700);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color var(--ease),border-color var(--ease),transform var(--ease),color var(--ease)
}
.btn-ghost:hover{background:var(--bg-alt);border-color:var(--brand-200);color:var(--brand-700);transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.btn-glass{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.4);color:#fff;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color var(--ease),transform var(--ease),color var(--ease)
}
.btn-glass:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-1px)}

/* ---------- 通用区块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--bg-alt)}
.section-tight{padding:44px 0}
@media (max-width:767px){.section{padding:44px 0}.section-tight{padding:28px 0}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:rgba(31,111,92,.08);border:1px solid rgba(31,111,92,.16);
  padding:6px 14px;border-radius:999px;margin-bottom:16px
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);flex:0 0 auto}
.eyebrow.on-dark{color:#EAF6F1;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.28)}
.eyebrow.on-dark::before{background:var(--accent-500)}
.section-head{max-width:780px;margin-bottom:36px}
.section-title{font-size:30px;line-height:1.32;margin-bottom:14px}
.section-sub{font-size:16px;color:var(--ink-600);margin:0}
@media (max-width:767px){.section-title{font-size:23px}.section-sub{font-size:15px}}

/* ---------- 分类横幅 ---------- */
.cat-banner{
  position:relative;overflow:hidden;
  border-radius:28px;
  background:var(--grad-brand);
  color:#fff;padding:54px 46px 50px;
  box-shadow:var(--shadow-lg)
}
.cat-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.18) 1px,transparent 1px);
  background-size:14px 14px;opacity:.55
}
.cat-banner::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,166,90,.32),transparent 68%);pointer-events:none
}
.cat-banner > *{position:relative;z-index:2}
.crumb{
  display:inline-flex;flex-wrap:wrap;align-items:center;gap:6px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  border-radius:999px;padding:7px 16px;font-size:13.5px;color:rgba(255,255,255,.92);margin-bottom:22px
}
.crumb a{color:rgba(255,255,255,.92)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb .sep{opacity:.6}
.crumb .now{color:#fff;font-weight:600}
.cat-banner h1{
  color:#fff;font-size:42px;line-height:1.24;letter-spacing:-.01em;
  max-width:820px;margin-bottom:18px
}
.cat-banner .lede{color:rgba(255,255,255,.9);font-size:17px;max-width:660px;margin-bottom:28px}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.badge-row{display:flex;flex-wrap:wrap;gap:12px}
.badge-glass{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 16px;border-radius:999px;
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.3);
  font-size:13px;font-weight:600;color:#fff
}
.badge-glass::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:0 0 auto}
.badge-glass b{font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;margin-right:2px}
@media (max-width:991px){.cat-banner{padding:42px 26px}.cat-banner h1{font-size:32px}}
@media (max-width:575px){.cat-banner{border-radius:22px;padding:34px 20px}.cat-banner h1{font-size:27px}.cat-banner .lede{font-size:15px}}

/* ---------- 标签胶囊行 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--ink-600);
  box-shadow:var(--shadow-sm);
  transition:border-color var(--ease),color var(--ease),background-color var(--ease)
}
.chip:hover{border-color:var(--brand-200);color:var(--brand-700);background:var(--bg-alt)}
.chip.is-on{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:var(--shadow-brand)}
.chip i{font-size:13px}

/* ---------- 图文速览 ---------- */
.overview{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:40px;align-items:center}
.overview-media{border-radius:24px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);background:linear-gradient(135deg,var(--brand-200),var(--brand-400))}
.overview-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.overview-list{margin-top:18px;display:grid;gap:12px}
.overview-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px}
.overview-list i{color:var(--brand-600);font-size:14px;margin-top:6px;flex:0 0 auto}
@media (max-width:991px){.overview{grid-template-columns:1fr;gap:26px}}

/* ---------- 深色流程带 ---------- */
.steps-band{
  position:relative;overflow:hidden;border-radius:28px;
  padding:52px 40px;
  background:linear-gradient(120deg,rgba(11,43,36,.94),rgba(20,87,68,.9)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  box-shadow:var(--shadow-lg)
}
.steps-band > *{position:relative;z-index:2}
.steps-band .section-title{color:#fff}
.steps-band .section-sub{color:rgba(255,255,255,.82)}
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:32px}
.step{
  background:rgba(255,255,255,.96);
  border:1px solid rgba(255,255,255,.6);
  border-radius:20px;padding:22px;
  transition:transform var(--ease),box-shadow var(--ease)
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.step-no{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:var(--grad-brand);color:#fff;font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:14px
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;line-height:1.8;margin:0;color:var(--ink-600)}
@media (max-width:991px){.steps-band{padding:36px 22px}.steps-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.steps-grid{grid-template-columns:1fr}}

/* ---------- 错落卡片网格 ---------- */
.stagger-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;padding-bottom:44px}
.stagger-grid > *:nth-child(even){margin-top:38px}
.f-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  padding:28px;height:100%;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-200)}
.f-icon{
  width:58px;height:58px;border-radius:50%;display:grid;place-items:center;
  background:rgba(31,111,92,.09);border:1px solid rgba(31,111,92,.2);
  color:var(--brand-600);margin-bottom:18px
}
.f-icon i{font-size:22px}
.f-card h3{font-size:20px;margin-bottom:10px}
.f-card p{font-size:15.5px;line-height:1.9;color:var(--ink-600)}
.data-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-900);
  font-variant-numeric:tabular-nums;margin-top:14px
}
.data-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);flex:0 0 auto}
@media (max-width:991px){.stagger-grid{padding-bottom:0}.stagger-grid > *:nth-child(even){margin-top:0}}
@media (max-width:767px){.stagger-grid{grid-template-columns:1fr;gap:18px}}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  background:linear-gradient(120deg,#0B2B24 0%,#1F6F5C 100%);
  border-radius:28px;padding:42px 44px;color:#fff;box-shadow:var(--shadow-lg)
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.85);margin:0;max-width:620px;font-size:15.5px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
@media (max-width:991px){.cta-band{padding:30px 22px;border-radius:22px}.cta-band h2{font-size:21px}}

/* ---------- FAQ ---------- */
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-sm);
  transition:border-color var(--ease),box-shadow var(--ease)
}
.faq-item:hover{border-color:var(--brand-200)}
.faq-item[open]{box-shadow:var(--shadow-md)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink-900)
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:3px solid var(--brand-200);outline-offset:-3px}
.faq-plus{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;border:1px solid var(--line);
  color:var(--brand-600);background:#fff;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease)
}
.faq-plus i{font-size:14px}
.faq-item[open] .faq-plus{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:rotate(45deg)}
.faq-body{padding:0 24px 22px;font-size:15.5px;line-height:1.9;color:var(--ink-600);border-top:1px dashed var(--line);margin-top:2px;padding-top:16px}
@media (max-width:575px){.faq-item summary{padding:16px 18px;font-size:16px}.faq-body{padding:14px 18px 18px}}

/* ---------- 订阅表单 ---------- */
.subscribe-card{
  background:var(--surface);border:1px solid var(--line);border-radius:24px;
  padding:32px;box-shadow:var(--shadow-md)
}
.form-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;margin-top:22px}
.field{flex:1 1 260px;min-width:0}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;border-radius:14px;border:1px solid var(--line);
  background:#fff;padding:0 16px;font-size:15px;color:var(--ink-900);
  transition:border-color var(--ease)
}
.field input::placeholder{color:var(--ink-400)}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand-600)}
.form-tip{font-size:13.5px;color:var(--ink-400);margin:16px 0 0}
@media (max-width:767px){.form-row{flex-direction:column;align-items:stretch}.form-row .btn-brand{width:100%}.subscribe-card{padding:24px 20px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--panel-dark);color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.08);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:62px 0 42px}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.site-footer p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66);margin:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14.5px}
.footer-links a:hover{color:var(--accent-500)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.72);margin-bottom:12px}
.footer-contact i{color:var(--brand-400);font-size:15px;margin-top:5px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13.5px;color:rgba(255,255,255,.55)
}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 30px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}}

/* ---------- 移动端导航 ---------- */
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;margin-left:0;
    display:none;grid-template-columns:1fr 1fr;gap:10px;
    padding:14px;background:#fff;border:1px solid var(--line);
    border-radius:20px;box-shadow:var(--shadow-lg)
  }
  .nav-links.open{display:grid}
  .nav-item{justify-content:flex-start;border:1px solid var(--line);background:var(--bg)}
  .nav-item:hover{background:var(--bg-alt)}
  .nav-links .nav-cta{grid-column:1/-1;width:100%;margin-left:0;height:46px}
}
@media (max-width:575px){
  .nav-links{grid-template-columns:1fr}
  .brand-text{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}