/* roulang page: index */
:root{
  --c-primary:#16544C;
  --c-primary-deep:#0E3A34;
  --c-primary-soft:#E6F0ED;
  --c-accent:#C0662B;
  --c-accent-deep:#A7531F;
  --c-accent-soft:#FBEDE2;
  --c-bg:#F7F5F1;
  --c-card:#FFFFFF;
  --c-text:#1B201E;
  --c-muted:#5A6461;
  --c-line:#E4E0D8;
  --c-foot:#10201D;
  --r-card:12px;
  --r-pic:16px;
  --r-btn:8px;
  --sh-lift:0 8px 24px rgba(22,84,76,.10);
  --sp-section:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
input,button,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}
.shell{max-width:1200px;margin:0 auto;padding:0 20px;}
.sec{padding:var(--sp-section) 0;}
.sec-tight{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.sec-title{font-size:clamp(23px,2.6vw,31px);line-height:1.4;font-weight:600;margin:0;position:relative;padding-left:16px;}
.sec-title::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;background:var(--c-primary);border-radius:2px;}
.sec-sub{color:var(--c-muted);font-size:15px;margin:10px 0 0;}
.lead{color:var(--c-muted);font-size:16px;}
h1,h2,h3{color:var(--c-text);}
.hero-h1{font-size:clamp(26px,5.4vw,44px);font-weight:700;line-height:1.35;margin:0 0 18px;letter-spacing:-.2px;}
.card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift);border-color:rgba(22,84,76,.30);}
.pic{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease;}
.pic-wrap{position:relative;overflow:hidden;border-radius:var(--r-pic);background:linear-gradient(140deg,#E6F0ED,#F7F5F1);}
.pic-wrap img{position:relative;z-index:1;}
.pic-wrap::after{content:"";position:absolute;inset:0;background:rgba(22,84,76,.06);z-index:2;pointer-events:none;}
.pic-wrap:hover .pic{transform:scale(1.03);}
.ratio-16-9{aspect-ratio:16/9;}
.ratio-4-3{aspect-ratio:4/3;}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;line-height:1.7;font-weight:600;}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent-deep);}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--r-btn);border:1px solid var(--c-accent);transition:background .22s ease,transform .22s ease,box-shadow .22s ease;cursor:pointer;}
.btn-primary:hover{background:var(--c-accent-deep);border-color:var(--c-accent-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(192,102,43,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#fff;color:var(--c-primary);font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--r-btn);border:1px solid var(--c-primary);transition:background .22s ease,transform .22s ease;cursor:pointer;}
.btn-ghost:hover{background:var(--c-primary-soft);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.link-more{color:var(--c-primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;transition:transform .22s ease;}
.link-more:hover{text-decoration:underline;transform:translateX(2px);}
.nav-link{position:relative;font-size:15px;color:#3C4442;padding:8px 2px;transition:color .22s ease;white-space:nowrap;}
.nav-link:hover{color:var(--c-primary);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-primary);border-radius:2px;}
.searchbox{width:220px;height:38px;border-radius:999px;border:1px solid var(--c-line);background:#fff;padding:0 16px;color:var(--c-text);transition:border-color .22s ease,box-shadow .22s ease;}
.searchbox::placeholder{color:#9AA3A0;}
.searchbox:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,84,76,.12);}
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);}
.metric-row > div{padding:0 20px;border-left:1px solid var(--c-line);}
.metric-row > div:first-child{border-left:0;padding-left:0;}
.pain-card{background:#fff;border:1px solid var(--c-line);border-left:3px solid var(--c-accent);border-radius:var(--r-card);padding:20px 22px;transition:transform .25s ease,box-shadow .25s ease;}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift);}
.pain-card h3{font-size:17px;font-weight:600;margin:0 0 8px;line-height:1.5;}
.pain-card p{font-size:14.5px;color:var(--c-muted);margin:0;line-height:1.8;}
.dot-list{list-style:none;margin:14px 0 0;padding:0;}
.dot-list li{position:relative;padding-left:18px;font-size:15px;color:#3C4442;line-height:1.9;}
.dot-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-primary);}
.data-band{background:var(--c-primary-deep);color:#fff;border-radius:16px;padding:52px 40px;}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.data-cell{padding:0 26px;border-left:1px solid rgba(255,255,255,.22);}
.data-cell:first-child{border-left:0;padding-left:0;}
.data-num{font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.2;color:#fff;}
.data-num small{font-size:16px;font-weight:600;margin-left:4px;}
.data-cap{font-size:14px;color:rgba(255,255,255,.78);margin-top:8px;line-height:1.7;}
.quote-card{background:#fff;border:1px solid var(--c-line);border-left:4px solid var(--c-accent);border-radius:var(--r-card);padding:26px 26px 22px;position:relative;transition:transform .25s ease,box-shadow .25s ease;}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lift);}
.quote-mark{font-size:44px;line-height:1;color:var(--c-accent-soft);font-weight:700;display:block;margin-bottom:-6px;}
.quote-card p{font-size:15.5px;line-height:1.95;color:#333A38;margin:0 0 20px;}
.quote-person{display:flex;align-items:center;gap:12px;}
.avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;background:var(--c-primary-soft);flex:0 0 44px;}
.avatar img{width:100%;height:100%;object-fit:cover;}
.quote-name{font-size:14.5px;font-weight:600;}
.quote-role{font-size:13px;color:var(--c-muted);}
.post-card{display:flex;flex-direction:column;overflow:hidden;height:100%;}
.post-card .pic-wrap{border-radius:0;border-bottom:1px solid var(--c-line);}
.post-badge{position:absolute;left:14px;top:14px;z-index:3;}
.post-body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1;}
.post-title{font-size:17.5px;font-weight:600;line-height:1.55;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-sum{font-size:14.5px;color:var(--c-muted);line-height:1.85;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);}
.post-meta .rd{color:var(--c-primary);font-weight:600;}
.empty-state{border:1px dashed #D8D2C6;border-radius:12px;padding:48px 24px;text-align:center;color:var(--c-muted);}
.empty-state strong{display:block;font-size:16px;color:#3C4442;font-weight:600;margin-bottom:8px;}
.empty-state span{font-size:13px;color:var(--c-muted);}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:none;border:0;padding:20px 22px;font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;transition:color .22s ease;}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{flex:0 0 22px;width:22px;height:22px;border-radius:6px;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1;transition:transform .25s ease,background .25s ease;}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--c-accent-soft);color:var(--c-accent-deep);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-muted);border-top:1px solid var(--c-line);padding-top:16px;}
.field-label{display:block;font-size:13px;font-weight:600;color:#3C4442;margin-bottom:6px;}
.field{width:100%;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;padding:0 14px;color:var(--c-text);transition:border-color .22s ease,box-shadow .22s ease;}
.field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,84,76,.12);}
.cta-band{position:relative;background:var(--c-primary-deep);border-radius:16px;overflow:hidden;color:#fff;}
.cta-band .cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.16;}
.cta-inner{position:relative;z-index:2;padding:52px 44px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:600;line-height:1.45;margin:0 0 12px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin:0;line-height:1.85;}
.site-foot{background:var(--c-foot);color:rgba(255,255,255,.88);padding:64px 0 0;margin-top:96px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.foot-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px;}
.foot-list{list-style:none;margin:0;padding:0;}
.foot-list li{margin-bottom:10px;}
.foot-list a{font-size:14px;color:rgba(255,255,255,.80);transition:color .22s ease;}
.foot-list a:hover{color:var(--c-accent);}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-logo-mark{width:34px;height:34px;border-radius:8px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;letter-spacing:.5px;}
.foot-logo-text{font-size:16px;font-weight:600;color:#fff;}
.foot-desc{font-size:14px;color:rgba(255,255,255,.72);line-height:1.85;margin:0;}
.foot-bottom{border-top:1px solid rgba(255,255,255,.16);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62);}
.brand-mark{width:38px;height:38px;border-radius:8px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;letter-spacing:.5px;flex:0 0 38px;}
.brand-text{font-size:16.5px;font-weight:600;line-height:1.35;color:var(--c-text);}
.brand-sub{font-size:12px;color:var(--c-muted);line-height:1.4;}
.hero-media{position:relative;}
.hero-media .pic-wrap{border-radius:var(--r-pic);}
.hero-overflow{position:absolute;right:-6%;bottom:-6%;width:52%;border-radius:14px;overflow:hidden;border:4px solid #fff;box-shadow:0 12px 30px rgba(22,84,76,.16);}
.drawer{max-height:0;overflow:hidden;transition:max-height .3s ease;background:#fff;border-top:1px solid var(--c-line);}
.drawer.open{max-height:520px;}
.drawer-link{display:flex;align-items:center;height:48px;font-size:15px;color:#3C4442;border-bottom:1px solid var(--c-line);padding:0 20px;}
.drawer-link.active{color:var(--c-primary);font-weight:600;}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}
.trust-line{border-top:1px solid var(--c-line);margin-top:44px;padding-top:24px;}
@media (max-width:1023px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .data-grid{grid-template-columns:1fr 1fr;row-gap:32px;}
  .data-cell:nth-child(3){border-left:0;padding-left:0;}
  .cta-inner{grid-template-columns:1fr;}
  .hero-overflow{display:none;}
  .metric-row{grid-template-columns:1fr 1fr;row-gap:20px;}
  .metric-row > div:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .shell{padding:0 16px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .data-band{padding:36px 22px;border-radius:16px;}
  .data-grid{grid-template-columns:1fr;row-gap:24px;}
  .data-cell{border-left:0;padding:0;border-top:1px solid rgba(255,255,255,.22);padding-top:20px;}
  .data-cell:first-child{border-top:0;padding-top:0;}
  .metric-row{grid-template-columns:1fr;row-gap:14px;}
  .metric-row > div{border-left:0;padding:0;}
  .cta-inner{padding:36px 22px;}
  .site-foot{margin-top:56px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .sec-tight{padding:40px 0;}
}
@media (min-width:768px){
  .md-two{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
}
@media (min-width:1024px){
  .lg-three{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
    --brand:#16544C;
    --brand-deep:#0E3A34;
    --brand-soft:#E6F0ED;
    --accent:#C0662B;
    --accent-deep:#A7531F;
    --accent-soft:#FBEDE2;
    --paper:#F7F5F1;
    --surface:#FFFFFF;
    --ink:#1B201E;
    --ink-2:#5A6461;
    --line:#E4E0D8;
    --foot:#10201D;
    --r-card:12px;
    --r-lg:16px;
    --r-btn:8px;
    --shadow-hover:0 8px 24px rgba(22,84,76,.10);
    --sect:96px;
    --sect-m:56px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
    font-size:16px;
    line-height:1.9;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease;}
  button{font:inherit;cursor:pointer;}
  input{font:inherit;}
  h1,h2,h3,h4{margin:0;color:var(--ink);}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;}

  a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:4px;
  }

  .shell{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
  }

  /* ---------- 顶栏 ---------- */
  .site-head{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 2px rgba(16,32,29,.04);
  }
  .head-inner{
    height:72px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
  .brand-mark{
    width:40px;height:40px;flex:0 0 40px;
    display:flex;align-items:center;justify-content:center;
    background:var(--brand);
    color:#fff;
    font-weight:800;
    font-size:15px;
    letter-spacing:.02em;
    border-radius:8px;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;white-space:nowrap;}
  .brand-text strong{font-size:15px;font-weight:700;color:var(--ink);}
  .brand-text span{font-size:12px;color:var(--ink-2);}

  .nav-link{
    position:relative;
    font-size:14px;
    font-weight:500;
    color:var(--ink-2);
    padding:6px 2px;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    background:var(--brand);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .25s ease;
  }
  .nav-link:hover{color:var(--brand);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}

  .head-search{
    width:220px;
    height:40px;
    border:1px solid var(--line);
    border-radius:999px;
    padding:0 18px;
    background:var(--paper);
    color:var(--ink);
    font-size:14px;
    transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  }
  .head-search::placeholder{color:#8B938F;}
  .head-search:focus{
    outline:none;
    background:#fff;
    border-color:var(--brand);
    box-shadow:0 0 0 3px rgba(22,84,76,.12);
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 22px;
    border-radius:var(--r-btn);
    font-size:14px;
    font-weight:600;
    border:1px solid transparent;
    transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  }
  .btn-sm{height:38px;padding:0 18px;font-size:14px;}
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-ghost{background:#fff;color:var(--brand);border-color:rgba(22,84,76,.45);}
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

  .burger{
    display:none;
    width:42px;height:42px;
    border:1px solid var(--line);
    border-radius:8px;
    background:#fff;
    align-items:center;
    justify-content:center;
  }
  .burger span{
    display:block;
    width:18px;height:2px;
    background:var(--brand);
    position:relative;
  }
  .burger span::before,.burger span::after{
    content:"";
    position:absolute;left:0;
    width:18px;height:2px;background:var(--brand);
  }
  .burger span::before{top:-6px;}
  .burger span::after{top:6px;}

  .mobile-drawer{
    display:none;
    background:#fff;
    border-bottom:1px solid var(--line);
    padding:12px 0 20px;
  }
  .mobile-drawer.open{display:block;}
  .drawer-link{
    display:flex;
    align-items:center;
    height:48px;
    padding:0 4px;
    font-size:15px;
    color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .drawer-link.active{color:var(--brand);font-weight:600;}
  .drawer-search{
    width:100%;
    height:44px;
    margin-top:14px;
    border:1px solid var(--line);
    border-radius:8px;
    padding:0 14px;
    background:var(--paper);
    font-size:14px;
  }

  /* ---------- 面包屑与标题区 ---------- */
  .page-head{
    background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);
    border-bottom:1px solid var(--line);
    padding:34px 0 30px;
  }
  .crumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--ink-2);
    line-height:1.7;
  }
  .crumb a:hover{color:var(--brand);text-decoration:underline;}
  .crumb .sep{color:#BDB8AC;}
  .crumb .now{color:var(--ink);}

  .article-title{
    font-size:clamp(26px, 4.4vw, 38px);
    font-weight:700;
    line-height:1.35;
    margin:16px 0 18px;
    max-width:900px;
    word-break:break-word;
  }
  .meta-row{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px;
    font-size:14px;
    color:var(--ink-2);
  }
  .meta-row .divider{width:1px;height:14px;background:var(--line);}
  .badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    background:var(--brand-soft);
    color:var(--brand-deep);
    font-size:13px;
    font-weight:600;
  }

  /* ---------- 正文布局 ---------- */
  .article-main{padding:var(--sect) 0;}
  .article-grid{
    display:grid;
    grid-template-columns:minmax(0,760px) 300px;
    gap:32px;
    justify-content:center;
  }
  .cover-wrap{
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--brand-soft);
    margin-bottom:28px;
  }
  .cover-wrap img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    transition:transform .3s ease;
  }
  .article-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
    padding:40px;
  }

  .prose-cn{font-size:16.5px;line-height:1.9;color:var(--ink);}
  .prose-cn > * + *{margin-top:1.25em;}
  .prose-cn h2{
    font-size:20px;
    font-weight:600;
    line-height:1.5;
    position:relative;
    padding-left:14px;
    margin-top:1.7em;
  }
  .prose-cn h2::before{
    content:"";
    position:absolute;
    left:0;top:.32em;
    width:4px;height:1.05em;
    background:var(--brand);
    border-radius:2px;
  }
  .prose-cn h3{font-size:17px;font-weight:600;margin-top:1.4em;}
  .prose-cn p{color:var(--ink);}
  .prose-cn a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .prose-cn a:hover{color:var(--accent);}
  .prose-cn ul,.prose-cn ol{padding-left:1.35em;line-height:1.85;}
  .prose-cn ul li{list-style:none;position:relative;padding-left:4px;}
  .prose-cn ul li::before{
    content:"";
    position:absolute;left:-14px;top:.78em;
    width:6px;height:6px;
    background:var(--brand);
    border-radius:1px;
  }
  .prose-cn ol{list-style:decimal;}
  .prose-cn ol li{padding-left:2px;}
  .prose-cn blockquote{
    margin:1.4em 0;
    padding:16px 20px;
    background:var(--paper);
    border-left:4px solid var(--accent);
    border-radius:0 8px 8px 0;
    color:var(--ink-2);
  }
  .prose-cn img{border-radius:8px;margin:1.4em auto;}
  .prose-cn figcaption{
    font-size:13px;
    color:var(--ink-2);
    text-align:center;
    margin-top:8px;
  }
  .prose-cn table{
    width:100%;
    border-collapse:collapse;
    font-size:15px;
    border:1px solid var(--line);
    border-radius:8px;
    overflow:hidden;
  }
  .prose-cn th,.prose-cn td{
    border:1px solid var(--line);
    padding:10px 14px;
    text-align:left;
    vertical-align:top;
  }
  .prose-cn th{background:var(--brand-soft);font-weight:600;color:var(--brand-deep);}
  .prose-cn pre,.prose-cn code{
    font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
    font-size:14px;
  }
  .prose-cn pre{
    background:#F2F1EE;
    border-radius:8px;
    padding:16px 18px;
    overflow-x:auto;
    line-height:1.7;
  }
  .prose-cn code{background:#F2F1EE;border-radius:4px;padding:2px 6px;}

  /* ---------- 侧栏 ---------- */
  .side{display:flex;flex-direction:column;gap:20px;}
  .side-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px;
  }
  .side-title{
    font-size:15px;
    font-weight:600;
    color:var(--ink);
    display:flex;
    align-items:center;
    gap:8px;
    margin-bottom:14px;
  }
  .side-title::before{
    content:"";
    width:3px;height:14px;
    background:var(--brand);
    border-radius:2px;
  }
  .side-tags{display:flex;flex-wrap:wrap;gap:8px;}
  .tag{
    display:inline-flex;
    align-items:center;
    height:28px;
    padding:0 12px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--paper);
    font-size:13px;
    color:var(--ink-2);
  }
  .tag:hover{border-color:rgba(22,84,76,.4);color:var(--brand);}

  .mini-item{
    display:flex;
    gap:12px;
    padding:12px 0;
    border-top:1px solid var(--line);
  }
  .mini-item:first-of-type{border-top:none;padding-top:0;}
  .mini-thumb{
    width:72px;height:72px;flex:0 0 72px;
    border-radius:8px;
    overflow:hidden;
    background:var(--brand-soft);
  }
  .mini-thumb img{width:100%;height:100%;object-fit:cover;}
  .mini-title{
    font-size:14px;
    font-weight:500;
    line-height:1.65;
    color:var(--ink);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .mini-item:hover .mini-title{color:var(--brand);}
  .mini-meta{font-size:12px;color:var(--ink-2);margin-top:6px;}

  .side-cta{
    background:var(--brand-deep);
    border-radius:var(--r-card);
    padding:24px 22px;
    color:#fff;
  }
  .side-cta h3{color:#fff;font-size:17px;font-weight:600;margin-bottom:8px;}
  .side-cta p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.82);margin-bottom:16px;}
  .side-cta .btn{width:100%;}

  /* ---------- 空态 ---------- */
  .empty-state{
    border:1px dashed #D8D2C6;
    border-radius:var(--r-card);
    padding:48px 24px;
    text-align:center;
    color:var(--ink-2);
  }
  .empty-state strong{display:block;font-size:17px;color:var(--ink);margin-bottom:8px;font-weight:600;}
  .empty-state span{display:block;font-size:13px;margin-bottom:18px;}

  /* ---------- 相关推荐 ---------- */
  .rec-section{padding-bottom:var(--sect);}
  .sec-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:26px;
  }
  .sec-title{
    font-size:clamp(23px,2.6vw,30px);
    font-weight:600;
    line-height:1.4;
    display:flex;
    align-items:center;
    gap:12px;
  }
  .sec-title::before{
    content:"";
    width:3px;height:24px;
    background:var(--brand);
    border-radius:2px;
    flex:0 0 3px;
  }
  .more-link{
    font-size:14px;
    color:var(--brand);
    font-weight:600;
    display:inline-flex;
    align-items:center;
    gap:6px;
    transition:transform .2s ease,color .2s ease;
  }
  .more-link:hover{color:var(--accent);transform:translateX(2px);}

  .card-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .card{
    display:flex;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-hover);
    border-color:rgba(22,84,76,.3);
  }
  .card-media{
    position:relative;
    overflow:hidden;
    background:var(--brand-soft);
  }
  .card-media img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    transition:transform .3s ease;
  }
  .card-media::after{
    content:"";
    position:absolute;inset:0;
    background:rgba(22,84,76,.06);
    pointer-events:none;
  }
  .card:hover .card-media img{transform:scale(1.03);}
  .card-media .badge{
    position:absolute;
    top:12px;left:12px;
    background:#fff;
    color:var(--brand-deep);
    z-index:2;
  }
  .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .card-title{
    font-size:18px;
    font-weight:600;
    line-height:1.5;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .card:hover .card-title{color:var(--brand);}
  .card-text{
    font-size:14px;
    line-height:1.8;
    color:var(--ink-2);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .card-foot{
    margin-top:auto;
    padding-top:12px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:13px;
    color:var(--ink-2);
  }
  .card-foot .go{color:var(--brand);font-weight:600;}

  .back-row{margin-top:32px;}

  /* ---------- CTA 条 ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    background:var(--brand-deep);
    color:#fff;
    border-radius:var(--r-lg);
  }
  .cta-band .bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-3.webp');
    background-size:cover;
    background-position:center;
    opacity:.18;
  }
  .cta-inner{
    position:relative;
    display:grid;
    grid-template-columns:1.3fr 1fr;
    gap:28px;
    align-items:center;
    padding:44px 40px;
  }
  .cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,28px);font-weight:600;line-height:1.45;margin-bottom:10px;}
  .cta-inner p{color:rgba(255,255,255,.84);font-size:15px;line-height:1.85;}
  .cta-form{display:flex;gap:12px;flex-wrap:wrap;}
  .cta-form input{
    flex:1 1 180px;
    height:44px;
    border-radius:var(--r-btn);
    border:1px solid rgba(255,255,255,.3);
    background:rgba(255,255,255,.12);
    color:#fff;
    padding:0 14px;
    font-size:14px;
  }
  .cta-form input::placeholder{color:rgba(255,255,255,.7);}
  .cta-form input:focus{
    outline:none;
    border-color:#fff;
    box-shadow:0 0 0 3px rgba(255,255,255,.18);
  }

  /* ---------- 页脚 ---------- */
  .site-foot{
    background:var(--foot);
    color:rgba(255,255,255,.88);
    padding:64px 0 24px;
    margin-top:var(--sect);
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:32px;
  }
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .foot-logo-mark{
    width:36px;height:36px;
    display:flex;align-items:center;justify-content:center;
    background:var(--accent);
    color:#fff;
    font-weight:800;
    font-size:14px;
    border-radius:8px;
  }
  .foot-logo-text{font-size:16px;font-weight:700;color:#fff;}
  .foot-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:320px;}
  .foot-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
  .foot-list li{margin-bottom:10px;}
  .foot-list a{
    font-size:14px;
    color:rgba(255,255,255,.78);
    line-height:1.7;
  }
  .foot-list a:hover{color:var(--accent);}
  .foot-bottom{
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid rgba(255,255,255,.14);
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    justify-content:space-between;
    font-size:13px;
    color:rgba(255,255,255,.66);
  }

  @media (max-width:1023px){
    .article-grid{grid-template-columns:minmax(0,1fr);}
    .side{position:static;}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .foot-grid{grid-template-columns:1fr 1fr;}
    .cta-inner{grid-template-columns:1fr;padding:36px 28px;}
  }
  @media (max-width:767px){
    .shell{padding:0 16px;}
    .head-inner{height:60px;}
    .head-inner .head-search,.head-inner .btn-primary.btn-sm{display:none;}
    .burger{display:flex;}
    .site-head nav[aria-label="主导航"]{display:none;}
    .article-main{padding:var(--sect-m) 0;}
    .article-card{padding:24px;}
    .page-head{padding:24px 0 22px;}
    .article-title{margin:12px 0 14px;}
    .card-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
    .foot-grid{grid-template-columns:1fr;gap:26px;}
    .site-foot{padding:48px 0 20px;margin-top:var(--sect-m);}
    .rec-section{padding-bottom:var(--sect-m);}
    .sec-head{flex-direction:column;align-items:flex-start;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
  }

/* roulang page: category1 */
:root{
  --primary:#16544C;
  --primary-deep:#0E3A34;
  --primary-soft:#E6F0ED;
  --accent:#C0662B;
  --accent-deep:#A7531F;
  --accent-soft:#FBEDE2;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --text:#1B201E;
  --muted:#5A6461;
  --line:#E4E0D8;
  --foot:#10201D;
  --radius-card:12px;
  --radius-pic:16px;
  --radius-btn:8px;
  --shadow-hover:0 8px 24px rgba(22,84,76,.10);
  --space-section:96px;
  --space-section-m:56px;
}

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

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

body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background-color:var(--paper);
  overflow-x:hidden;
}

img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.shell{
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,32,29,.04);
}
.nav-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  white-space:nowrap;
}
.brand-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);
  color:#fff;
  font-size:15px;
  font-weight:700;
  letter-spacing:.5px;
  border-radius:6px;
  flex-shrink:0;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.2px;
}
.brand-text:hover{color:var(--primary);}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 2px;
  font-weight:500;
}
.nav-link:hover{color:var(--primary);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.nav-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.nav-search{
  width:220px;
  position:relative;
}
.nav-search input{
  width:100%;
  height:40px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#FFFFFF;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:#98A19E;}
.nav-search input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(22,84,76,.12);
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  height:44px;
  padding:0 22px;
  border:1px solid var(--accent);
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#FFFFFF;
  font-size:14px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{
  background:var(--accent-deep);
  border-color:var(--accent-deep);
  color:#FFFFFF;
  transform:translateY(-1px);
  box-shadow:var(--shadow-hover);
}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-primary.is-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  height:44px;
  padding:0 22px;
  border:1px solid var(--primary);
  border-radius:var(--radius-btn);
  background:#FFFFFF;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-ghost:hover{
  background:var(--primary-soft);
  color:var(--primary);
  transform:translateY(-1px);
  box-shadow:var(--shadow-hover);
}
.btn-ghost:active{transform:translateY(0);box-shadow:none;}
.burger{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#FFFFFF;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.burger span{
  display:block;
  width:18px;height:2px;
  background:var(--primary);
  border-radius:2px;
}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#FFFFFF;
  padding:12px 0 18px;
}
.drawer.open{display:block;}
.drawer a.drawer-link{
  display:flex;
  align-items:center;
  height:48px;
  padding:0 20px;
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid #F1EEE8;
}
.drawer a.drawer-link.active{color:var(--primary);font-weight:600;background:var(--primary-soft);}
.drawer .drawer-form{padding:14px 20px 4px;}
.drawer .drawer-form input{
  width:100%;height:44px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#FFFFFF;
}
.drawer .drawer-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,84,76,.12);}
.drawer .drawer-cta{padding:14px 20px 0;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space-section) 0;}
.section-tight{padding:80px 0;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--accent);
  background:var(--accent-soft);
  border-radius:999px;
  padding:5px 14px;
}
.sec-title{
  position:relative;
  padding-left:14px;
  font-size:clamp(23px,3.2vw,30px);
  line-height:1.4;
  font-weight:600;
  color:var(--text);
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:3px;
  background:var(--primary);
  border-radius:2px;
}
.lead{
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
}
.breadcrumb{
  font-size:13px;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#B9B2A6;}
.breadcrumb .cur{color:var(--text);font-weight:600;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  background:linear-gradient(180deg,#E6F0ED 0%,#F2F6F4 68%,#F7F5F1 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 60px;
}
.cat-hero h1{
  margin:18px 0 16px;
  font-size:clamp(26px,5.4vw,40px);
  line-height:1.35;
  font-weight:700;
  color:var(--text);
  max-width:16em;
}
.cat-hero .lead{max-width:760px;font-size:17px;color:#3F4A47;}
.hero-actions{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-chips{
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid rgba(22,84,76,.16);
  display:flex;
  flex-wrap:wrap;
  gap:10px 12px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  background:#FFFFFF;
  border:1px solid rgba(22,84,76,.18);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
}

/* ---------- 图文交替分区 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split.rev .split-media{order:2;}
.split-body p{margin-top:14px;}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  line-height:1.8;
  color:#3F4A47;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:8px;
  background:var(--primary);
  border-radius:2px;
}
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-pic);
  border:1px solid var(--line);
  background:var(--primary-soft);
  aspect-ratio:4/3;
}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(22,84,76,.06);
  pointer-events:none;
}
.split:hover .media-frame img{transform:scale(1.03);}

/* ---------- 深色维度条 ---------- */
.metric-band{
  background:var(--primary-deep);
  color:#FFFFFF;
  border-radius:16px;
  padding:44px 8px;
}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric-cell{
  padding:4px 28px;
  border-left:1px solid rgba(255,255,255,.22);
}
.metric-cell:first-child{border-left:none;}
.metric-num{
  font-size:clamp(28px,3.6vw,40px);
  font-weight:700;
  line-height:1.1;
  letter-spacing:.5px;
}
.metric-label{
  margin-top:10px;
  font-size:15px;
  font-weight:600;
  color:#FFFFFF;
}
.metric-note{
  margin-top:6px;
  font-size:13px;
  line-height:1.7;
  color:rgba(255,255,255,.72);
}

/* ---------- 纵向信息列表 ---------- */
.info-list{
  border-top:1px solid var(--line);
}
.info-row{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:24px;
  align-items:center;
  padding:24px 4px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease;
}
.info-row:hover{background:#FFFFFF;}
.info-index{
  font-size:15px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.06em;
}
.info-row h3{font-size:18px;line-height:1.5;font-weight:600;color:var(--text);}
.info-row p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--muted);}
.info-link{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.info-link:hover{color:var(--accent);text-decoration:underline;}
.info-link .arrow{transition:transform .2s ease;}
.info-link:hover .arrow{transform:translateX(2px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(22,84,76,.3);box-shadow:var(--shadow-hover);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex-shrink:0;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--primary);
  font-size:17px;
  line-height:1;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-item[open] summary::after{
  content:"−";
  background:var(--primary);
  border-color:var(--primary);
  color:#FFFFFF;
  transform:rotate(180deg);
}
.faq-body{
  padding:0 24px 22px;
  border-top:1px solid var(--line);
  margin-top:-1px;
  padding-top:18px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  background-color:var(--primary-deep);
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  color:#FFFFFF;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(14,58,52,.94) 0%,rgba(14,58,52,.86) 52%,rgba(14,58,52,.72) 100%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.35fr .65fr;
  gap:36px;
  align-items:center;
  padding:52px 44px;
}
.cta-inner h2{
  font-size:clamp(22px,3vw,28px);
  line-height:1.45;
  font-weight:600;
  color:#FFFFFF;
}
.cta-inner p{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  max-width:52em;
}
.cta-actions{display:flex;justify-content:flex-end;}
.cta-actions .btn-primary{height:48px;padding:0 28px;font-size:15px;}

/* ---------- 页脚 ---------- */
.site-foot{
  background:var(--foot);
  color:rgba(255,255,255,.88);
  padding:64px 0 26px;
  margin-top:96px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.foot-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.foot-logo-mark{
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);
  color:#FFFFFF;
  border-radius:6px;
  font-size:14px;
  font-weight:700;
  flex-shrink:0;
}
.foot-logo-text{
  font-size:16px;
  font-weight:600;
  color:#FFFFFF;
}
.foot-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
  max-width:30em;
}
.foot-title{
  font-size:15px;
  font-weight:600;
  color:#FFFFFF;
  margin-bottom:16px;
}
.foot-list li{margin-bottom:10px;}
.foot-list a{
  font-size:14px;
  color:rgba(255,255,255,.82);
}
.foot-list a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.18);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.66);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-inner{height:64px;gap:16px;}
  .nav-search{width:180px;}
  .split{gap:36px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .metric-cell:nth-child(3){border-left:none;}
  .cta-inner{grid-template-columns:1fr;gap:24px;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .shell{padding:0 16px;}
  .section{padding:var(--space-section-m) 0;}
  .section-tight{padding:48px 0;}
  .nav-inner{height:60px;}
  .nav-search,.nav-right .btn-primary{display:none;}
  .burger{display:flex;}
  .brand-text{font-size:15px;}
  .cat-hero{padding:36px 0 40px;}
  .cat-hero h1{font-size:clamp(24px,6.6vw,30px);max-width:none;}
  .split{grid-template-columns:1fr;gap:24px;}
  .split.rev .split-media{order:0;}
  .split + .split{margin-top:48px;}
  .media-frame{aspect-ratio:16/9;}
  .metric-band{padding:32px 6px;border-radius:12px;}
  .metric-grid{grid-template-columns:1fr;gap:0;}
  .metric-cell{
    border-left:none;
    border-top:1px solid rgba(255,255,255,.22);
    padding:20px 22px;
  }
  .metric-cell:first-child{border-top:none;}
  .info-row{
    grid-template-columns:1fr;
    gap:8px;
    padding:20px 2px;
  }
  .info-index{font-size:13px;}
  .info-row h3{font-size:17px;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-body{padding:16px 18px 18px;}
  .cta-inner{padding:32px 22px;}
  .cta-actions .btn-primary{width:100%;}
  .site-foot{margin-top:56px;padding:48px 0 22px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{justify-content:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --brand:#16544C;
  --brand-deep:#0E3A34;
  --brand-soft:#E6F0ED;
  --accent:#C0662B;
  --accent-deep:#A7531F;
  --accent-soft:#FBEDE2;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --text:#1B201E;
  --muted:#5A6461;
  --line:#E4E0D8;
  --foot:#10201D;
  --r-card:12px;
  --r-lg:16px;
  --r-btn:8px;
  --shadow-lift:0 8px 24px rgba(22,84,76,.10);
  --shell:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .24s ease,background-color .24s ease,border-color .24s ease,transform .24s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.4;}
h1{font-size:clamp(26px,5.4vw,40px);line-height:1.35;letter-spacing:-.01em;}
h2{font-size:clamp(22px,3.4vw,30px);font-weight:600;line-height:1.4;}
h3{font-size:18px;font-weight:600;line-height:1.5;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}

.shell{max-width:var(--shell);margin:0 auto;padding:0 20px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.sec-title{position:relative;padding-left:14px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--brand);
}
.sec-sub{color:var(--muted);font-size:15px;line-height:1.8;margin-top:12px;max-width:720px;}
.divider{height:1px;background:var(--line);border:0;}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,32,29,.04);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:6px;background:var(--brand);color:#fff;
  font-size:15px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap;}
.nav-link{
  display:inline-block;position:relative;padding:6px 2px;
  font-size:15px;color:#33403C;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{position:relative;width:220px;}
.search-box input{
  width:100%;height:40px;padding:0 16px 0 38px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text);font-size:14px;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.search-box input::placeholder{color:#96A09C;}
.search-box input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,84,76,.12);outline:none;}
.search-box .search-icon{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;border:2px solid #96A09C;border-radius:50%;
}
.search-box .search-icon::after{
  content:"";position:absolute;right:-4px;bottom:-3px;width:6px;height:2px;background:#96A09C;transform:rotate(45deg);border-radius:2px;
}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform .24s ease,opacity .24s ease;}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
}
.mobile-drawer.open{display:block;}
.mobile-drawer ul{padding:8px 20px 16px;}
.mobile-drawer li a{
  display:flex;align-items:center;height:48px;color:var(--text);font-size:15px;
  border-bottom:1px solid #F1EEE8;
}
.mobile-drawer li a.active{color:var(--brand);font-weight:600;}
.mobile-drawer .drawer-tools{padding:0 20px 20px;display:flex;flex-direction:column;gap:12px;}

/* ============ buttons ============ */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:all .24s ease;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);}
.btn-ghost:active{background:#D9E8E4;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn-primary[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

.text-link{color:var(--brand);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.text-link .arrow{transition:transform .24s ease;}
.text-link:hover{text-decoration:underline;}
.text-link:hover .arrow{transform:translateX(3px);}

/* ============ breadcrumb ============ */
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C1BD;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;}
.breadcrumb [aria-current="page"]{color:var(--text);}

/* ============ badges / tags ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--accent-soft);color:var(--accent-deep);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;
}

/* ============ category hero ============ */
.cat-hero{
  background:linear-gradient(180deg,#EFF5F2 0%,#F7F5F1 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 52px;
}
.cat-hero h1{margin-top:18px;max-width:840px;}
.cat-hero .lead{margin-top:16px;max-width:660px;color:var(--muted);font-size:16px;line-height:1.9;}
.cat-hero .hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);}
.hero-meta span{position:relative;padding-right:14px;}
.hero-meta span+span::before{content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line);}

/* ============ feature card ============ */
.feature-card{
  display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:box-shadow .24s ease,border-color .24s ease,transform .24s ease;
}
.feature-card:hover{border-color:rgba(22,84,76,.3);box-shadow:var(--shadow-lift);transform:translateY(-2px);}
.feature-media{position:relative;min-height:320px;overflow:hidden;background:var(--brand-soft);}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-media::after{content:"";position:absolute;inset:0;background:rgba(22,84,76,.06);}
.feature-body{padding:40px;display:flex;flex-direction:column;justify-content:center;}
.feature-body h2{margin-top:16px;}
.feature-body p{margin-top:14px;color:var(--muted);font-size:16px;}
.feature-body .feature-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}

.dot-list{margin-top:18px;display:grid;gap:10px;}
.dot-list li{position:relative;padding-left:16px;font-size:15px;color:#33403C;line-height:1.8;}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:1px;background:var(--brand);
}

/* ============ card grid ============ */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr));}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;height:100%;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:rgba(22,84,76,.3);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-media::after{content:"";position:absolute;inset:0;background:rgba(22,84,76,.06);}
.card-media .badge{position:absolute;left:12px;top:12px;z-index:2;background:rgba(255,255,255,.94);}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.card-index{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;
  border-radius:8px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.card-body h3{margin-top:14px;}
.card-body p{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.85;}
.card-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid #F1EEE8;
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);
}

/* ============ steps ============ */
.step-band{
  background:var(--brand-deep);color:#fff;border-radius:var(--r-lg);
  padding:48px 40px;
}
.step-band h2{color:#fff;}
.step-band .sec-sub{color:rgba(255,255,255,.78);}
.step-grid{margin-top:32px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.step-item{padding:0 24px;border-left:1px solid rgba(255,255,255,.18);}
.step-item:first-child{border-left:0;padding-left:0;}
.step-item .step-no{font-size:13px;letter-spacing:.08em;color:rgba(255,255,255,.6);font-variant-numeric:tabular-nums;}
.step-item h3{margin-top:10px;color:#fff;font-size:17px;}
.step-item p{margin-top:10px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.78);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item:hover{border-color:rgba(22,84,76,.3);}
.faq-item.open{box-shadow:var(--shadow-lift);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 22px 22px;border-top:1px solid #F1EEE8;padding-top:16px;}
.faq-a-inner p{font-size:15px;line-height:1.85;color:var(--muted);}
.faq-a-inner p+p{margin-top:10px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-deep);color:#fff;
  padding:52px 48px;
}
.cta-band .cta-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.18;
}
.cta-band .cta-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,28px);}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.8);font-size:15px;line-height:1.9;}
.cta-form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-card);padding:24px;}
.form-field{margin-bottom:14px;}
.form-field label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.88);margin-bottom:6px;}
.form-field input,.form-field textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;height:44px;font-size:14px;color:var(--text);
  transition:border-color .24s ease,box-shadow .24s ease;
}
.form-field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-field input:focus,.form-field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,84,76,.12);outline:none;}
.form-note{font-size:12.5px;color:rgba(255,255,255,.62);line-height:1.7;margin-top:10px;}

/* ============ footer ============ */
.site-foot{background:var(--foot);color:rgba(255,255,255,.88);margin-top:96px;padding:64px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;}
.foot-logo-mark{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:6px;
  background:var(--accent);color:#fff;font-size:14px;font-weight:700;
}
.foot-logo-text{font-size:16px;font-weight:700;color:#fff;}
.foot-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:320px;}
.foot-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.foot-list li{margin-bottom:10px;}
.foot-list a{color:rgba(255,255,255,.88);font-size:14px;}
.foot-list a:hover{color:var(--accent);text-decoration:underline;}
.foot-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62);
}

/* ============ responsive ============ */
@media (max-width:1023px){
  .nav-link{font-size:14px;}
  .search-box{width:170px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feature-card{grid-template-columns:1fr;}
  .feature-media{min-height:260px;}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .step-item{border-left:0;padding:0;}
  .cta-band .cta-inner{grid-template-columns:1fr;gap:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:76px 0;}
}
@media (max-width:767px){
  .header-inner{height:60px;}
  .header-tools .search-box,.header-tools .btn-primary{display:none;}
  .menu-toggle{display:flex;}
  .site-header .hidden.lg\:flex{display:none;}
  .section{padding:56px 0;}
  .cat-hero{padding:40px 0 40px;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .feature-body{padding:24px;}
  .step-band{padding:32px 24px;}
  .step-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .site-foot{margin-top:56px;padding-top:48px;}
  .hero-meta span{padding-right:0;}
  .hero-meta span+span::before{display:none;}
}
@media (max-width:520px){
  .shell{padding:0 16px;}
  .brand-text{font-size:15px;}
  .btn-primary,.btn-ghost{height:42px;padding:0 18px;font-size:14px;}
  .faq-q{font-size:15px;padding:18px;}
  .faq-a-inner{padding:14px 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}