/* roulang page: index */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25}
h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;line-height:1.35}
h3{font-size:19px;font-weight:600;line-height:1.45}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{margin-bottom:34px;max-width:760px}
.section-head h2{color:var(--c-text)}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-text-2);line-height:1.8}
.section-head.light h2{color:#fff}
.section-head.light p{color:rgba(255,255,255,.66)}
.section-bar{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px}
.section-bar .section-head{margin-bottom:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s,background-color .2s,color .2s,border-color .2s,box-shadow .2s;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(14,59,47,.08)}
.btn-light{background:#fff;color:var(--c-primary)}
.btn-light:hover{background:var(--c-amber);color:var(--c-primary-deep);transform:translateY(-1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);border-bottom:2px solid var(--c-accent);padding-bottom:2px;transition:border-color .2s,color .2s}
.text-link:hover{color:var(--c-accent);border-color:var(--c-primary)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:500;line-height:1.6}
.badge-primary{background:rgba(14,59,47,.08);color:var(--c-primary)}
.badge-accent{background:rgba(196,85,47,.1);color:var(--c-accent)}
.badge-amber{background:rgba(224,169,75,.18);color:#8A6118}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:var(--r-pill);background:rgba(14,59,47,.08);color:var(--c-primary);font-size:13px;font-weight:600;letter-spacing:.05em}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;padding:10px 0;background:rgba(247,243,236,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:box-shadow .25s}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  height:64px;padding:0 12px 0 18px;
  background:rgba(255,255,255,.86);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s,border-color .25s;
}
.site-header.is-stuck .nav-shell{box-shadow:var(--sh-2);border-color:#D6CABA}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);flex:none}
.brand-mark{width:34px;height:34px;color:var(--c-primary);display:grid;place-items:center;flex:none}
.brand-mark svg{width:100%;height:100%;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-size:16px;font-weight:700}
.brand-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--c-text-3);letter-spacing:.05em;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-menu a{position:relative;padding:9px 14px;font-size:14.5px;color:var(--c-text-2);border-radius:var(--r-pill);transition:color .2s,background-color .2s}
.nav-menu a::after{content:"";position:absolute;left:50%;bottom:3px;width:0;height:3px;border-radius:3px;background:var(--c-accent);transform:translateX(-50%);transition:width .2s}
.nav-menu a:hover{color:var(--c-text);background:rgba(14,59,47,.06)}
.nav-menu a:hover::after{width:14px}
.nav-menu a.active{color:var(--c-primary);font-weight:600;background:rgba(14,59,47,.08)}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none}
.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--r-pill);place-items:center;color:var(--c-primary);transition:background-color .2s}
.nav-toggle:hover{background:rgba(14,59,47,.08)}
.nav-toggle svg{width:20px;height:20px}

/* 移动端抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:80;background:var(--c-bg);display:none;flex-direction:column;padding:16px 20px 28px;overflow-y:auto}
.mobile-drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:16px}
.drawer-close{width:40px;height:40px;border-radius:var(--r-pill);display:grid;place-items:center;color:var(--c-primary);background:rgba(14,59,47,.08)}
.drawer-close svg{width:18px;height:18px}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:56px;font-size:16px;color:var(--c-text-2);border-bottom:1px solid var(--c-line);padding:0 4px}
.drawer-nav a.active{color:var(--c-primary);font-weight:600}
.drawer-nav a span{font-size:12px;color:var(--c-text-3)}
.drawer-cta{margin-top:24px}

/* Hero */
.hero{position:relative;padding:76px 0 96px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(14,59,47,.04) 0 1px,transparent 1px 10px);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{margin-top:20px}
.hero-sub{margin-top:18px;font-size:17px;color:var(--c-text-2);line-height:1.8;max-width:520px}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-trust{margin-top:32px;display:flex;flex-wrap:wrap;gap:24px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-2)}
.hero-trust svg{width:18px;height:18px;color:var(--c-ok);flex:none}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-3)}
.float-card{
  position:absolute;left:-18px;bottom:-20px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-img);
  padding:14px 20px;box-shadow:var(--sh-3);
}
.float-num{display:block;font-size:28px;font-weight:700;line-height:1;color:var(--c-primary)}
.float-num em{font-style:normal;font-size:14px;margin-left:2px;color:var(--c-accent)}
.float-label{display:block;margin-top:6px;font-size:12.5px;color:var(--c-text-3)}

/* 指标看板 */
.metrics{background:var(--c-primary-deep);color:#E9EFEA;padding:88px 0;position:relative;overflow:hidden}
.metrics::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 1px,transparent 1px 12px);
}
.metrics .container{position:relative}
.metric-grid{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid rgba(255,255,255,.14)}
.metric{padding:26px 20px 22px;border-bottom:1px solid rgba(255,255,255,.14);border-right:1px solid rgba(255,255,255,.14)}
.metric:last-child{border-right:0}
.m-label{display:block;font-size:13px;color:rgba(255,255,255,.6)}
.m-num{display:block;font-size:clamp(30px,3.6vw,44px);font-weight:700;line-height:1;color:#fff;margin:12px 0 10px}
.m-num em{font-style:normal;font-size:16px;color:var(--c-amber);margin-left:2px}
.m-desc{display:block;font-size:13px;color:rgba(255,255,255,.6);line-height:1.6}
.metric-note{margin-top:22px;font-size:12px;color:rgba(255,255,255,.45)}

/* 服务矩阵 */
.matrix{display:grid;grid-template-columns:1.15fr 1fr;grid-template-rows:auto auto;gap:24px}
.matrix-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);transition:box-shadow .25s,border-color .25s,transform .25s;
  display:flex;flex-direction:column;gap:12px;
}
.matrix-card:hover{box-shadow:var(--sh-2);border-color:rgba(14,59,47,.3);transform:translateY(-2px)}
.matrix-card.is-lg{grid-row:span 2;padding:32px}
.matrix-card.is-lg h3{font-size:22px}
.matrix-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.85}
.matrix-card .text-link{margin-top:auto}
.matrix-media{margin-top:8px;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9}
.matrix-media img{width:100%;height:100%;object-fit:cover}
.matrix-icon{width:44px;height:44px;border-radius:12px;background:rgba(14,59,47,.08);display:grid;place-items:center;color:var(--c-primary)}
.matrix-icon svg{width:22px;height:22px}

/* 对比 */
.compare-table{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.compare-row{display:grid;grid-template-columns:1.05fr 1fr 1fr;border-top:1px solid var(--c-line)}
.compare-row:first-child{border-top:0}
.compare-head{background:var(--c-surface-2);font-weight:600;color:var(--c-text)}
.compare-row:nth-child(odd):not(.compare-head){background:rgba(239,232,220,.35)}
.compare-cell{padding:16px 20px;font-size:14.5px;color:var(--c-text-2);border-left:1px solid var(--c-line)}
.compare-row .compare-cell:first-child{border-left:0;color:var(--c-text);font-weight:600}
.compare-head .compare-cell{color:var(--c-text);font-size:14.5px;font-weight:600}
.compare-cell.is-diff{color:var(--c-accent);font-weight:600}
.compare-note{margin-top:18px;font-size:12.5px;color:var(--c-text-3)}

/* 结论条 */
.conclusion{
  margin-top:24px;background:var(--c-surface-2);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-btn) var(--r-btn) 0;padding:16px 22px;font-size:14.5px;color:var(--c-text-2);
}

/* 内容卡片 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .25s,border-color .25s,transform .25s;
  display:flex;flex-direction:column;
}
.post-card:hover{box-shadow:var(--sh-2);border-color:rgba(14,59,47,.3);transform:translateY(-2px)}
.post-cover{aspect-ratio:4/3;overflow:hidden;background:var(--c-surface-2)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-excerpt{font-size:14px;color:var(--c-text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-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-text-3)}
.post-meta .go{color:var(--c-primary);font-weight:600}

/* 空态 */
.empty-state{
  min-height:180px;background:var(--c-surface-2);border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:32px;text-align:center;
}
.empty-state svg{width:46px;height:46px;color:var(--c-text-3)}
.empty-state p{font-size:14px;color:var(--c-text-2)}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-img);margin-bottom:12px;overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item.open{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2)}
.faq-q{width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--c-text)}
.faq-icon{width:22px;height:22px;flex:none;color:var(--c-accent);transition:transform .3s}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--c-text-2);line-height:1.9}

/* CTA / 表单 */
.cta-section{background:var(--c-primary-deep);padding:92px 0;position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.03) 0 1px,transparent 1px 12px);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cta-copy h2{color:#fff;margin-top:18px}
.cta-copy>p{margin-top:16px;font-size:16px;color:rgba(255,255,255,.7);line-height:1.85;max-width:460px}
.contact-list{margin-top:32px;border-top:1px solid rgba(255,255,255,.16)}
.contact-list li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:14.5px}
.contact-list span{color:rgba(255,255,255,.6)}
.contact-list strong{color:#fff;font-weight:600}
.form-card{background:var(--c-surface);border-radius:20px;padding:34px;box-shadow:var(--sh-3)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--c-text-2);margin-bottom:8px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;font:inherit;font-size:15px;color:var(--c-text);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-input);
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(14,59,47,.12);
}
.field .err{display:block;margin-top:6px;font-size:13px;color:var(--c-err)}
.form-actions{display:flex;justify-content:flex-end}
.form-success{
  margin-top:18px;background:rgba(14,59,47,.06);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-btn) var(--r-btn) 0;padding:14px 18px;font-size:14px;color:var(--c-primary);
  display:flex;align-items:center;gap:10px;
}
.form-success svg{width:18px;height:18px;flex:none}

/* 页脚 */
.site-footer{background:var(--c-primary-deep);color:#E9EFEA;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-mark{color:var(--c-amber)}
.footer-brand .brand-text em{color:rgba(255,255,255,.55)}
.footer-desc{margin-top:18px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.85;max-width:300px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:11px}
.footer-links a,.footer-info li{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s}
.footer-links a:hover{color:var(--c-amber);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.footer-info li{margin-bottom:12px;line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0;display:flex;
  align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* 响应式 */
@media (max-width:1280px){
  .container{padding:0 24px}
}
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-toggle{display:grid}
  .nav-shell{height:60px}
  .section{padding:64px 0}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:620px}
  .float-card{left:auto;right:16px;bottom:-18px}
  .metric-grid{grid-template-columns:repeat(3,1fr)}
  .metric:nth-child(3n){border-right:0}
  .matrix{grid-template-columns:1fr;grid-template-rows:auto}
  .matrix-card.is-lg{grid-row:auto}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .metrics{padding:64px 0}
  .cta-section{padding:64px 0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(3n){border-right:1px solid rgba(255,255,255,.14)}
  .metric:nth-child(2n){border-right:0}
  .compare-row{grid-template-columns:1fr 1fr}
  .compare-row .compare-cell:first-child{grid-column:1 / -1;background:var(--c-surface-2);border-left:0}
  .compare-row .compare-cell:nth-child(2){border-left:0}
  .form-row{grid-template-columns:1fr}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .hero{padding:44px 0 60px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .hero-trust{gap:14px}
  .post-grid{grid-template-columns:1fr}
  .metric{padding:20px 14px}
  .m-num{font-size:30px}
  .form-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-q{font-size:15px;padding:12px 18px}
  .faq-a p{padding:0 18px 18px}
}

/* roulang page: article */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);
  --container:1200px;
  --font:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  background-image:repeating-linear-gradient(45deg,rgba(14,59,47,.028) 0 1px,transparent 1px 22px);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:12px 0;
  background:rgba(247,243,236,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-2);border-bottom-color:var(--c-line)}
.nav-shell{
  height:64px;
  display:flex;align-items:center;gap:20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  padding:0 12px 0 20px;
  box-shadow:var(--sh-1);
}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;color:var(--c-primary);display:inline-flex}
.brand-mark svg{width:100%;height:100%}
.brand-text{font-size:17px;font-weight:700;color:var(--c-primary);letter-spacing:0}
.brand-text em{font-style:normal;font-weight:500;font-size:14px;color:var(--c-text-2);margin-left:2px}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-menu a{
  font-size:14.5px;color:var(--c-text-2);
  padding:9px 14px;border-radius:var(--r-pill);
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--c-text);background:rgba(14,59,47,.06)}
.nav-menu a.active{color:var(--c-primary);font-weight:600;background:rgba(14,59,47,.08)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  padding:14px 28px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-accent);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(14,59,47,.08);transform:translateY(-1px)}
.btn-text{background:none;padding:0;border:0;color:var(--c-primary);font-weight:600;border-bottom:2px solid var(--c-accent);border-radius:0;transition:border-color .2s}
.btn-text:hover{border-color:var(--c-primary)}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  color:var(--c-primary);align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:var(--c-bg);
}
.nav-toggle svg{width:22px;height:22px}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3)}
.breadcrumb a{color:var(--c-text-2);transition:color .2s}
.breadcrumb a:hover{color:var(--c-accent)}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .current{color:var(--c-text-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-hero{padding:28px 0 8px}
.article-shell{max-width:920px;margin:0 auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  color:var(--c-primary);background:rgba(14,59,47,.08);
  border-radius:var(--r-pill);padding:7px 16px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent)}
.article-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;font-weight:700;
  margin:18px 0 16px;color:var(--c-text);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--c-text-3)}
.article-meta .divider{width:1px;height:12px;background:var(--c-line);display:inline-block}
.article-lead{
  margin-top:22px;padding:18px 22px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--c-text-2);font-size:15.5px;line-height:1.8;
}
.hero-figure{margin:34px 0 0;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/9}
.hero-figure img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-caption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px}

/* ---------- 正文 ---------- */
.article-body{padding:44px 0 0}
.prose{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--c-text)}
.prose p{margin:0 0 1em}
.prose h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;
  margin:2.2em 0 .8em;position:relative;padding-bottom:12px;
}
.prose h2::after{
  content:"";position:absolute;left:0;bottom:0;width:46px;height:3px;
  background:var(--c-accent);border-radius:2px;
}
.prose h3{font-size:20px;font-weight:600;line-height:1.45;margin:1.9em 0 .7em;color:var(--c-primary)}
.prose ul,.prose ol{padding-left:1.5em;margin:0 0 1em}
.prose ul li{list-style:disc}
.prose ol li{list-style:decimal}
.prose li{margin:.45em 0;line-height:1.85}
.prose blockquote{
  margin:1.5em 0;padding:18px 24px;
  border-left:3px solid var(--c-primary);
  background:var(--c-surface-2);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--c-text-2);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{width:100%;border-radius:var(--r-img);margin:1.5em 0 .6em}
.prose a{color:var(--c-accent);border-bottom:1px solid rgba(196,85,47,.4)}
.prose a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15.5px}
.prose th,.prose td{border:1px solid var(--c-line);padding:12px 14px;text-align:left}
.prose th{background:var(--c-surface-2);font-weight:600;color:var(--c-primary)}
.prose tr:nth-child(even) td{background:rgba(239,232,220,.4)}
.prose strong{color:var(--c-primary);font-weight:600}
.prose hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:48px 28px;text-align:center;min-height:180px;
}
.empty-mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  border:1.5px solid var(--c-primary);position:relative;opacity:.7;
}
.empty-mark::after{
  content:"";position:absolute;inset:16px;border-radius:50%;
  border:1.5px solid var(--c-accent);
}
.empty-title{font-size:18px;font-weight:600;color:var(--c-text);margin-bottom:8px}
.empty-tip{font-size:14px;color:var(--c-text-2);margin-bottom:20px;line-height:1.7}

/* ---------- 标签 / 操作 ---------- */
.article-foot{max-width:760px;margin:44px auto 0;padding-top:26px;border-top:1px solid var(--c-line)}
.foot-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.foot-row + .foot-row{margin-top:18px}
.tag-label{font-size:13px;color:var(--c-text-3)}
.badge{
  display:inline-flex;align-items:center;
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(14,59,47,.08);color:var(--c-primary);
  transition:background .2s ease,color .2s ease;
}
.badge:hover{background:rgba(196,85,47,.12);color:var(--c-accent)}
.badge-accent{background:rgba(196,85,47,.1);color:var(--c-accent)}
.actions{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,30px);font-weight:700;line-height:1.35;color:var(--c-text)}
.section-head p{font-size:14.5px;color:var(--c-text-2);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);border-color:rgba(14,59,47,.3)}
.card-cover{aspect-ratio:4/3;overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1}
.card-body h3{
  font-size:19px;font-weight:600;line-height:1.45;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body .desc{
  font-size:14.5px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);border-top:1px solid var(--c-line);padding-top:14px;
}
.card-meta a{color:var(--c-primary);font-weight:600;border-radius:6px}
.card-meta a:hover{color:var(--c-accent)}

/* ---------- CTA 带 ---------- */
.cta-band{padding:76px 0 0}
.cta-inner{
  background:var(--c-primary-deep);
  border-radius:22px;
  padding:52px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#E9EFEA;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 1px,transparent 1px 26px);
  position:relative;overflow:hidden;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.35;color:#fff}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.68);max-width:560px;line-height:1.8}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}
.btn-amber{background:var(--c-amber);color:#231a06}
.btn-amber:hover{background:var(--c-accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-1px)}

/* ---------- 返回入口 ---------- */
.back-links{padding:36px 0 0;display:flex;gap:14px;flex-wrap:wrap;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:#E9EFEA;margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-text em{color:rgba(255,255,255,.62)}
.site-footer .brand-mark{color:var(--c-amber)}
.footer-desc{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8;margin-top:16px;max-width:340px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li,.footer-info li{margin:10px 0;font-size:14px;color:rgba(255,255,255,.62);line-height:1.7}
.footer-links a{color:rgba(255,255,255,.62);transition:color .2s ease}
.footer-links a:hover{color:var(--c-amber);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-menu a{padding:9px 10px;font-size:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:880px){
  body{font-size:16px}
  .nav-shell{padding:0 12px;justify-content:space-between}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .nav-menu{
    position:fixed;inset:0;top:0;z-index:90;
    margin:0;padding:88px 24px 32px;
    background:var(--c-bg);
    flex-direction:column;align-items:stretch;gap:4px;
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{font-size:16px;padding:16px 18px;border-radius:14px;border-bottom:1px solid var(--c-line)}
  .nav-menu a.active{background:rgba(14,59,47,.08)}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 28px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .article-hero h1{font-size:30px}
  .prose{font-size:16.5px}
  .prose h2{font-size:22px}
  .card-grid{grid-template-columns:1fr}
  .related{padding-top:56px}
  .cta-band{padding-top:56px}
  .site-footer{margin-top:72px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .breadcrumb .current{max-width:100%}
  .actions{margin-left:0}
}
@media (max-width:480px){
  .brand-text{font-size:15.5px}
  .brand-text em{display:none}
  .article-meta{gap:8px;font-size:12.5px}
  .article-lead{padding:16px 16px;font-size:15px}
  .back-links .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-text)}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25}
h2{font-size:clamp(24px,2.6vw,30px);line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s,background-color .2s,border-color .2s}
a:hover{color:var(--c-accent)}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:rgba(196,85,47,.18)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:#FBF7F0}
.section-dark{background:var(--c-primary-deep);color:#E9EFEA}
.section-dark h2,.section-dark h3{color:#FFFFFF}
.section-head{max-width:760px;margin-bottom:28px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:16px;
}
.section-dark .eyebrow{background:rgba(224,169,75,.16);color:var(--c-amber)}
.lead{color:var(--c-text-2);font-size:17px;line-height:1.9;margin-top:14px}
.section-dark .lead{color:rgba(255,255,255,.72)}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,243,236,.82);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s,border-color .25s,background-color .25s;
}
.site-header.is-scrolled{
  box-shadow:var(--sh-2);
  border-bottom-color:var(--c-line);
  background:rgba(247,243,236,.94);
}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:64px;
  margin:10px 0;
  padding:0 8px 0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary);flex:0 0 auto}
.brand:hover{color:var(--c-primary)}
.brand-mark{display:inline-flex;width:32px;height:32px;color:var(--c-primary)}
.brand-mark svg{width:32px;height:32px;display:block}
.brand-text{font-size:17px;font-weight:700;line-height:1.2;white-space:nowrap}
.brand-text em{font-style:normal;font-size:12.5px;font-weight:500;color:var(--c-text-3);margin-left:6px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  color:var(--c-text-2);
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:3px;height:3px;border-radius:50%;
  background:var(--c-text);transform:translateX(-50%) scale(0);
  transition:transform .2s;
}
.nav-menu a:hover{color:var(--c-text)}
.nav-menu a:hover::after{transform:translateX(-50%) scale(1)}
.nav-menu a.active{color:var(--c-primary);font-weight:600;background:rgba(14,59,47,.08)}
.nav-menu a.active::after{transform:translateX(-50%) scale(0)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--c-line);
  color:var(--c-primary);cursor:pointer;transition:background-color .2s,border-color .2s;
}
.nav-toggle:hover{background:rgba(14,59,47,.08);border-color:rgba(14,59,47,.3)}
.nav-toggle svg{width:22px;height:22px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .22s,color .22s,border-color .22s,transform .22s,box-shadow .22s;
}
.btn-primary{background:var(--c-primary);color:#FFFFFF}
.btn-primary:hover{background:var(--c-accent);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(14,59,47,.08);color:var(--c-primary)}
.btn-light{background:#FFFFFF;color:var(--c-primary);border-color:#FFFFFF}
.btn-light:hover{background:var(--c-amber);border-color:var(--c-amber);color:var(--c-primary-deep);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-pill)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:15px;
  border-bottom:2px solid var(--c-accent);
  padding-bottom:3px;
  transition:border-color .2s,color .2s;
}
.btn-text:hover{color:var(--c-accent)}

/* ============ 面包屑 ============ */
.crumb{padding:26px 0 0;font-size:14px;color:var(--c-text-3)}
.crumb a{color:var(--c-text-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{margin:0 10px;color:var(--c-line)}
.crumb .current{color:var(--c-text-2);font-weight:600}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:44px 0 96px;
  background:var(--c-bg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(14,59,47,.04) 0 1px,transparent 1px 15px);
}
.hero>.container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--c-text-2);line-height:1.9;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:32px}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--c-text-2);list-style:none}
.hero-trust svg{width:20px;height:20px;color:var(--c-primary);flex:0 0 auto}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-3);
}
.float-card{
  position:absolute;left:-22px;bottom:-26px;
  background:#FFFFFF;border:1px solid var(--c-line);border-radius:var(--r-img);
  padding:16px 22px;box-shadow:var(--sh-3);
  min-width:168px;
}
.float-card strong{display:block;font-size:40px;line-height:1;font-weight:700;color:var(--c-primary)}
.float-card span{display:block;font-size:13px;color:var(--c-text-3);margin-top:6px}

/* ============ 速览表区域 ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px;align-items:start}
.table-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto}
table.quick-table{width:100%;border-collapse:collapse;font-size:15px;min-width:640px}
.quick-table thead th{
  background:var(--c-surface-2);
  color:var(--c-text-2);
  font-size:13.5px;font-weight:600;
  text-align:left;padding:14px 20px;white-space:nowrap;
}
.quick-table tbody td{
  padding:16px 20px;
  border-top:1px solid var(--c-line);
  color:var(--c-text-2);
  vertical-align:top;
  line-height:1.75;
}
.quick-table tbody tr{transition:background-color .2s}
.quick-table tbody tr:hover{background:rgba(14,59,47,.05)}
.quick-table tbody td:first-child{font-weight:600;color:var(--c-text);width:170px}
.table-note{
  padding:14px 20px;font-size:13px;color:var(--c-text-3);
  border-top:1px solid var(--c-line);background:#FCFAF6;
}
.side-stack{display:grid;gap:20px}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin-bottom:14px}
.side-list{list-style:none;display:grid;gap:2px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;
  font-size:14.5px;color:var(--c-text-2);
  border-bottom:1px dashed var(--c-line);
  transition:color .2s,padding-left .2s;
}
.side-list li:last-child a{border-bottom:0}
.side-list a:hover{color:var(--c-primary);padding-left:4px}
.side-list a svg{width:16px;height:16px;color:var(--c-accent);flex:0 0 auto}
.cta-card{
  background:var(--c-primary);color:#FFFFFF;border-color:transparent;
}
.cta-card h3{color:#FFFFFF}
.cta-card p{font-size:14px;color:rgba(255,255,255,.74);line-height:1.8}
.cta-card .btn{margin-top:16px}

/* ============ 卡片 / 标签 / 数据条 ============ */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1.6;
  background:rgba(14,59,47,.08);color:var(--c-primary);
}
.badge-accent{background:rgba(196,85,47,.1);color:var(--c-accent)}
.card-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.info-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:border-color .22s,box-shadow .22s,transform .22s;
}
.info-card:hover{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.info-card h3{margin-bottom:10px}
.info-card p{font-size:15px;color:var(--c-text-2);line-height:1.85}
.icon-box{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(14,59,47,.08);color:var(--c-primary);
  margin-bottom:16px;
}
.icon-box svg{width:24px;height:24px}
.bars{display:grid;gap:20px;margin-top:34px}
.bar-row{display:grid;grid-template-columns:150px 1fr 64px;align-items:center;gap:18px}
.bar-row .bar-name{font-size:14.5px;color:var(--c-text-2)}
.bar-track{height:8px;border-radius:var(--r-pill);background:var(--c-surface-2);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--r-pill);background:var(--c-accent)}
.bar-val{font-size:14px;font-weight:600;color:var(--c-text);text-align:right}
.bar-caption{font-size:13px;color:var(--c-text-3);margin-top:18px}

/* ============ 场景条目 ============ */
.step-list{display:grid;gap:16px;margin-top:8px}
.tip-row{
  display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 26px;
  transition:border-color .22s,background-color .22s;
}
.tip-row:hover{border-color:rgba(14,59,47,.3);background:#FCFAF6}
.tip-num{
  font-size:26px;font-weight:700;color:var(--c-primary);
  background:rgba(14,59,47,.08);border-radius:12px;
  width:56px;height:56px;display:flex;align-items:center;justify-content:center;
}
.tip-row h3{font-size:17px;margin-bottom:6px}
.tip-row p{font-size:14.5px;color:var(--c-text-2);margin:0}
.tip-row .tip-tag{font-size:13px;color:var(--c-text-3);white-space:nowrap}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .22s,box-shadow .22s;
}
.faq-item.open{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2)}
.faq-q{
  width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:14px 22px;
  background:none;border:0;cursor:pointer;
  font-size:16.5px;font-weight:600;text-align:left;color:var(--c-text);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .25s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{display:none;padding:0 22px 22px;font-size:15.5px;color:var(--c-text-2);line-height:1.9}
.faq-item.open .faq-a{display:block}

/* ============ 表单 / CTA ============ */
.cta-section{padding:96px 0;background:var(--c-primary-deep);color:#E9EFEA;position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 1px,transparent 1px 16px);
}
.cta-section>.container{position:relative;z-index:1}
.cta-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:32px;align-items:start}
.form-card{
  background:#FFFFFF;color:var(--c-text);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-3);
}
.form-card h2{font-size:24px;margin-bottom:10px}
.form-card .form-intro{font-size:15px;color:var(--c-text-2);margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column}
.field-full{grid-column:1/-1}
.field label{font-size:14px;color:var(--c-text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:#FFFFFF;
  font-size:15px;
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.8}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(14,59,47,.12);
}
.field .err{font-size:13px;color:var(--c-err);margin-top:6px}
.form-actions{display:flex;justify-content:flex-end;margin-top:24px}
.form-note{
  display:flex;gap:12px;margin-top:22px;padding:16px 18px;
  background:rgba(14,59,47,.06);border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;font-size:14px;color:var(--c-text-2);line-height:1.8;
}
.form-note svg{width:20px;height:20px;color:var(--c-primary);flex:0 0 auto;margin-top:2px}
.contact-list{list-style:none;display:grid;gap:18px}
.contact-list li{font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.8}
.contact-list strong{display:block;color:#FFFFFF;font-size:15px;font-weight:600;margin-bottom:4px}

/* ============ 页脚前链接条 ============ */
.page-foot-links{padding:56px 0;background:#FBF7F0}
.page-foot-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 30px;
  box-shadow:var(--sh-1);
}
.page-foot-inner p{margin:0;font-size:15px;color:var(--c-text-2)}
.page-foot-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-deep);color:#E9EFEA;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#FFFFFF}
.footer-brand .brand-text{color:#FFFFFF}
.footer-brand .brand-text em{color:rgba(255,255,255,.62)}
.footer-brand .brand-mark{color:var(--c-amber)}
.footer-desc{font-size:14.5px;color:rgba(255,255,255,.62);line-height:1.85;margin-top:18px;max-width:32em}
.footer-title{font-size:15px;font-weight:600;color:#FFFFFF;margin-bottom:16px}
.footer-links,.footer-info{list-style:none;display:grid;gap:10px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.62)}
.footer-links a:hover{color:var(--c-amber);border-bottom:2px solid var(--c-amber)}
.footer-info li{font-size:14.5px;color:rgba(255,255,255,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13.5px;color:rgba(255,255,255,.52);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:64px 0}
  .cta-section{padding:64px 0}
  .hero{padding:32px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .float-card{left:auto;right:16px;bottom:-20px}
  .split{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-menu{
    position:fixed;inset:0;z-index:90;
    display:flex;flex-direction:column;gap:0;
    padding:96px 24px 40px;
    background:var(--c-bg);
    transform:translateY(-100%);opacity:0;pointer-events:none;
    transition:transform .3s ease,opacity .3s ease;
    overflow-y:auto;
  }
  .nav-menu.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-menu a{
    height:56px;display:flex;align-items:center;
    padding:0;border-radius:0;
    border-bottom:1px solid var(--c-line);
    font-size:17px;color:var(--c-text);
  }
  .nav-menu a::after{display:none}
  .nav-menu a.active{background:transparent;color:var(--c-primary);font-weight:600}
  .nav-toggle{display:inline-flex}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .cta-section{padding:56px 0}
  .card-grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .tip-row{grid-template-columns:44px 1fr;gap:16px;padding:20px}
  .tip-num{width:44px;height:44px;font-size:20px}
  .tip-row .tip-tag{grid-column:2;color:var(--c-text-3)}
  .bar-row{grid-template-columns:1fr;gap:8px}
  .bar-val{text-align:left}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:24px}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .page-foot-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:16px}
  .nav-shell{height:56px;padding:0 6px 0 12px;margin:8px 0}
  .brand-text{font-size:15.5px}
  .brand-text em{display:none}
  .hero{padding:24px 0 56px}
  .hero-trust{gap:14px}
  .float-card{position:static;margin-top:16px;display:inline-block}
  .faq-q{font-size:15.5px;padding:14px 16px}
  .faq-a{padding:0 16px 18px}
  .btn{padding:13px 22px}
}

/* roulang page: category2 */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.87;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-locked{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.5em;}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;line-height:1.35;margin-top:2.2em;margin-bottom:.8em;}
h3{font-size:20px;font-weight:600;line-height:1.45;margin-top:1.6em;margin-bottom:.6em;}
p{margin:0 0 1em;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,243,236,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  padding:14px 0;
  transition:padding .25s ease;
}
.site-header.is-scrolled{padding:8px 0;}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:64px;padding:0 12px 0 20px;
  background:rgba(255,255,255,.72);
  border:1px solid transparent;
  border-radius:999px;
  transition:box-shadow .25s ease,border-color .25s ease,background .25s ease;
}
.site-header.is-scrolled .nav-shell{border-color:var(--c-line);box-shadow:var(--sh-2);background:rgba(255,255,255,.9);}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary);}
.brand-mark{display:inline-flex;width:30px;height:30px;color:var(--c-primary);}
.brand-mark svg{width:100%;height:100%;}
.brand-text{font-size:18px;font-weight:700;line-height:1.2;color:var(--c-primary);white-space:nowrap;}
.brand-text em{font-style:normal;font-weight:500;color:var(--c-text-2);font-size:14px;margin-left:4px;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:999px;
  font-size:14.5px;color:var(--c-text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:4px;height:4px;border-radius:50%;background:var(--c-primary);
  transform:translateX(-50%) scale(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-menu a:hover{color:var(--c-text);background:rgba(14,59,47,.05);}
.nav-menu a:hover::after{transform:translateX(-50%) scale(1);}
.nav-menu a.active{color:var(--c-primary);font-weight:600;background:rgba(14,59,47,.08);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:999px;
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-primary);
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(14,59,47,.06);border-color:rgba(14,59,47,.3);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(14,59,47,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:14.5px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;
  border-bottom:2px solid var(--c-accent);padding-bottom:2px;
  transition:color .2s ease;
}
.btn-text:hover{color:var(--c-accent);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  background:rgba(14,59,47,.08);color:var(--c-primary);
}
.badge-accent{background:rgba(196,85,47,.1);color:var(--c-accent);}
.badge-plain{background:var(--c-surface-2);color:var(--c-text-2);font-weight:500;letter-spacing:0;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:22px 0 4px;font-size:14px;color:var(--c-text-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;list-style:none;padding:0;margin:0;}
.breadcrumb li{display:inline-flex;align-items:center;gap:10px;}
.breadcrumb li+li::before{content:"";width:1px;height:12px;background:var(--c-line);}
.breadcrumb a{color:var(--c-text-2);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb [aria-current="page"]{color:var(--c-text);font-weight:600;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:44px 0 76px;
  background-image:
    repeating-linear-gradient(45deg,rgba(14,59,47,.035) 0 1px,transparent 1px 12px);
}
.hero-inner{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;}
.hero h1{margin:18px 0 14px;color:var(--c-text);}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:32em;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 24px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;list-style:none;padding:0;margin:0;}
.hero-meta li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.hero-meta svg{width:18px;height:18px;color:var(--c-primary);flex:none;}
.hero-figure{position:relative;}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-3);}
.hero-float{
  position:absolute;left:-16px;bottom:-20px;
  display:flex;flex-direction:column;gap:2px;
  padding:16px 20px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);min-width:190px;
}
.hero-float strong{font-size:30px;font-weight:700;line-height:1.1;color:var(--c-primary);}
.hero-float span{font-size:13px;color:var(--c-text-3);}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:44em;margin-bottom:28px;}
.section-head h2{margin-top:0;}
.section-head .lead{color:var(--c-text-2);font-size:16.5px;}
.section-head .badge{margin-bottom:14px;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}

/* ---------- metric cards ---------- */
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.metric-card{
  position:relative;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px 26px 24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease;
}
.metric-card:hover{box-shadow:var(--sh-2);border-color:rgba(14,59,47,.28);transform:translateY(-2px);}
.metric-label{font-size:13px;font-weight:600;letter-spacing:.05em;color:var(--c-text-3);}
.metric-value{display:flex;align-items:baseline;gap:6px;margin:14px 0 10px;font-size:clamp(40px,4.4vw,56px);font-weight:700;line-height:1;color:var(--c-primary);}
.metric-value small{font-size:18px;font-weight:600;color:var(--c-accent);}
.metric-note{font-size:14px;color:var(--c-text-2);}
.metric-card::after{
  content:"";position:absolute;left:0;bottom:0;width:70px;height:70px;
  background:repeating-linear-gradient(45deg,rgba(14,59,47,.06) 0 1px,transparent 1px 7px);
  pointer-events:none;
}

/* ---------- compare table ---------- */
.table-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse;font-size:15.5px;}
.compare-table caption{text-align:left;padding:22px 26px 0;font-size:14px;color:var(--c-text-3);}
.compare-table th,.compare-table td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--c-line);vertical-align:top;}
.compare-table thead th{
  background:var(--c-surface-2);
  font-size:14px;font-weight:600;color:var(--c-text-2);
  letter-spacing:.03em;border-bottom:1px solid var(--c-line);
}
.compare-table thead th:last-child{color:var(--c-primary);}
.compare-table tbody th{font-weight:600;color:var(--c-text);width:22%;}
.compare-table tbody tr:nth-child(even){background:rgba(239,232,220,.42);}
.compare-table tbody tr{transition:background .18s ease;}
.compare-table tbody tr:hover{background:rgba(14,59,47,.05);}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table td{color:var(--c-text-2);}
.compare-table td.diff{color:var(--c-accent);font-weight:600;}
.data-note{
  display:flex;gap:12px;align-items:flex-start;
  margin-top:18px;padding:16px 20px;
  background:var(--c-surface-2);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;
  font-size:13px;line-height:1.75;color:var(--c-text-2);
}

/* ---------- split content ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2);}
.split h2{margin-top:0;}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{
  display:flex;gap:14px;padding:16px 0;
  border-bottom:1px solid var(--c-line);
}
.check-list li:last-child{border-bottom:0;}
.check-list .num{
  flex:none;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(14,59,47,.08);color:var(--c-primary);
  font-size:13px;font-weight:700;
}
.check-list strong{display:block;font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:2px;}
.check-list span{font-size:14.5px;color:var(--c-text-2);}

/* ---------- faq ---------- */
.faq-list{max-width:860px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 24px;
  font-size:16.5px;font-weight:600;color:var(--c-text);
  cursor:pointer;list-style:none;
  transition:background .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(14,59,47,.05);color:var(--c-primary);}
.faq-icon{
  position:relative;flex:none;width:22px;height:22px;
  transition:transform .25s ease;color:var(--c-accent);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px;color:var(--c-text-2);font-size:16px;line-height:1.9;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-deep);color:#fff;
  border-radius:20px;padding:56px 48px;
  display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 1px,transparent 1px 14px);
}
.cta-band h2{margin:0 0 10px;color:#fff;font-size:clamp(22px,2.6vw,28px);}
.cta-band p{margin:0;color:rgba(255,255,255,.72);font-size:15.5px;max-width:36em;}
.cta-band .btn-primary{background:var(--c-amber);color:#231a0c;}
.cta-band .btn-primary:hover{background:#f0bd64;color:#231a0c;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- page-end links ---------- */
.page-end{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:18px;padding:26px 0 0;border-top:1px solid var(--c-line);margin-top:8px;
}

/* ---------- footer ---------- */
.site-footer{background:var(--c-primary-deep);color:#E9EFEA;margin-top:24px;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:44px;}
.footer-brand .brand{color:#fff;}
.footer-brand .brand-mark{color:var(--c-amber);}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.62);}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:30em;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px;}
.footer-links,.footer-info{list-style:none;padding:0;margin:0;}
.footer-links li,.footer-info li{margin-bottom:11px;font-size:14px;color:rgba(255,255,255,.62);}
.footer-links a{color:rgba(255,255,255,.78);border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease;}
.footer-links a:hover{color:var(--c-amber);border-bottom-color:var(--c-amber);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav-menu{
    position:fixed;left:0;right:0;top:0;bottom:0;
    margin:0;padding:104px 24px 40px;
    background:var(--c-bg);
    flex-direction:column;align-items:stretch;gap:2px;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
    overflow-y:auto;z-index:55;
  }
  .site-header.nav-open .nav-menu{opacity:1;visibility:visible;transform:none;}
  .nav-menu a{padding:16px 18px;font-size:16px;border-radius:14px;min-height:56px;display:flex;align-items:center;}
  .nav-menu a::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-sm{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-float{left:16px;bottom:-18px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .metric-row{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 16px;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .hero{padding:24px 0 56px;}
  .metric-row{grid-template-columns:repeat(2,1fr);gap:16px;}
  .metric-card{padding:22px 20px 20px;}
  .compare-table{font-size:14.5px;}
  .compare-table th,.compare-table td{padding:13px 14px;}
  .compare-table tbody th{width:30%;}
  .cta-band{padding:36px 24px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:56px 0 24px;}
}
@media (max-width:520px){
  h1{font-size:30px;}
  .brand-text em{display:none;}
  .brand-text{font-size:16.5px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:14px;}
  .metric-row{grid-template-columns:1fr;}
  .table-wrap{border-radius:14px;}
  .compare-table thead th{font-size:13px;}
  .faq-item summary{font-size:15.5px;padding:14px 18px;}
  .faq-body{padding:0 18px 20px;font-size:15px;}
  .page-end{flex-direction:column;align-items:stretch;}
  .page-end .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;
  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --container:1200px;
  --sec-y:96px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--c-primary);}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--c-text);}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;}
h2{font-size:clamp(24px,3vw,29px);}
h3{font-size:20px;font-weight:600;line-height:1.45;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-y) 0;}
.section--surface{background:var(--c-surface);}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .eyebrow{margin-bottom:12px;}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:16.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.eyebrow--accent{color:var(--c-accent);background:rgba(196,85,47,.1);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:12px 0;
  background:rgba(247,243,236,.82);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  box-shadow:var(--sh-2);
  border-bottom-color:var(--c-line);
}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;
  padding:0 20px;
  background:rgba(255,255,255,.72);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;flex:0 0 auto;}
.brand-mark{width:32px;height:32px;color:var(--c-primary);display:inline-flex;}
.brand-mark svg{width:100%;height:100%;display:block;}
.brand-text{font-size:17px;color:var(--c-text);letter-spacing:0;}
.brand-text em{font-style:normal;color:var(--c-accent);}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  color:var(--c-text-2);
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:3px;height:3px;border-radius:50%;
  background:var(--c-accent);
  transform:translateX(-50%) scale(0);
  transition:transform .2s ease;
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{transform:translateX(-50%) scale(1);}
.nav-menu a.active{color:var(--c-primary);font-weight:600;background:rgba(14,59,47,.08);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:40px;height:40px;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;
  background:var(--c-surface);color:var(--c-primary);
  cursor:pointer;transition:background-color .2s ease;
}
.nav-toggle:hover{background:var(--c-surface-2);}
.nav-toggle svg{width:22px;height:22px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  padding:14px 28px;
  font-size:15.5px;font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-secondary{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-secondary:hover{background:rgba(14,59,47,.08);color:var(--c-primary);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.link-underline{
  display:inline-block;
  font-weight:600;color:var(--c-primary);
  padding-bottom:2px;
  border-bottom:2px solid var(--c-accent);
  transition:color .2s ease,border-color .2s ease;
}
.link-underline:hover{color:var(--c-accent);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);}
.link-arrow svg{width:16px;height:16px;transition:transform .2s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--c-text-3);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{width:1px;height:12px;background:var(--c-line);display:inline-block;}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:40px 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(14,59,47,.035) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;
}
.hero-title{margin:18px 0 16px;max-width:16em;}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;}
.hero-meta li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);}
.hero-meta svg{width:18px;height:18px;color:var(--c-primary);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-3);
}
.hero-float{
  position:absolute;left:-24px;bottom:-24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:14px;
  box-shadow:var(--sh-3);
  padding:16px 20px;
  min-width:170px;
}
.hero-float .num{font-size:30px;font-weight:700;line-height:1;color:var(--c-primary);}
.hero-float .lbl{font-size:13px;color:var(--c-text-3);margin-top:6px;}

/* ============ 深色指标带 ============ */
.stats-strip{
  position:relative;
  background:var(--c-primary-deep);
  color:#E9EFEA;
  padding:64px 0;
  overflow:hidden;
}
.stats-strip::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.stats-strip .container{position:relative;}
.stats-strip h2{color:#fff;font-size:22px;}
.stats-strip .stats-note{font-size:12px;color:rgba(255,255,255,.55);margin-top:16px;}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:28px;
  border-top:1px solid rgba(255,255,255,.14);
}
.stat-cell{
  padding:26px 24px 24px 0;
  border-right:1px solid rgba(255,255,255,.14);
}
.stat-cell:last-child{border-right:none;}
.stat-num{font-size:clamp(34px,4vw,50px);font-weight:700;line-height:1;color:#fff;}
.stat-num em{font-style:normal;font-size:18px;font-weight:600;color:var(--c-amber);margin-left:6px;}
.stat-label{font-size:13.5px;color:rgba(255,255,255,.62);margin-top:10px;}

/* ============ 流程步骤轴 ============ */
.step-flow{display:grid;gap:34px;}
.step-item{display:grid;grid-template-columns:64px 1fr;gap:20px;align-items:stretch;}
.step-axis{position:relative;display:flex;justify-content:center;}
.step-axis::after{
  content:"";position:absolute;top:48px;bottom:-34px;width:2px;
  background:linear-gradient(180deg,rgba(14,59,47,.28),rgba(14,59,47,.06));
}
.step-item:last-child .step-axis::after{display:none;}
.step-dot{
  position:relative;z-index:1;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;
  font-size:15px;font-weight:700;
  box-shadow:0 0 0 6px rgba(14,59,47,.08);
}
.step-card{
  position:relative;
  display:grid;grid-template-columns:1fr 236px;gap:26px;align-items:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 28px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.step-card:hover{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-num{
  position:absolute;right:14px;top:-14px;
  font-size:84px;font-weight:700;line-height:1;
  color:rgba(14,59,47,.1);
  pointer-events:none;user-select:none;
}
.step-copy{position:relative;z-index:1;}
.step-copy h3{margin-bottom:8px;}
.step-copy p{color:var(--c-text-2);font-size:15.5px;}
.step-media{position:relative;z-index:1;}
.step-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--c-line);
}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(14,59,47,.08);color:var(--c-primary);
}
.tag--accent{background:rgba(196,85,47,.1);color:var(--c-accent);}

/* ============ 场景错落卡 ============ */
.scene-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;}
.scene-main{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.scene-main:hover{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2);}
.scene-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.scene-main .scene-body{padding:26px 28px 28px;}
.scene-main h3{margin-bottom:10px;}
.scene-main p{color:var(--c-text-2);font-size:15.5px;}
.scene-side{display:grid;gap:24px;}
.scene-small{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 26px;flex:1;
  transition:border-color .22s ease,box-shadow .22s ease,background-color .22s ease;
}
.scene-small:hover{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2);background:rgba(14,59,47,.02);}
.scene-small h3{font-size:18px;margin-bottom:8px;}
.scene-small p{font-size:15px;color:var(--c-text-2);}
.scene-small .badge{margin-bottom:14px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(14,59,47,.08);color:var(--c-primary);
}
.badge--accent{background:rgba(196,85,47,.1);color:var(--c-accent);}

/* ============ 对比表 ============ */
.compare{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.compare-head{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--c-surface-2);
  font-weight:600;font-size:15.5px;
}
.compare-head span{padding:16px 24px;}
.compare-head span:first-child{border-right:1px solid var(--c-line);}
.compare-row{
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--c-line);
  font-size:15.5px;
}
.compare-row:nth-child(odd){background:rgba(239,232,220,.35);}
.compare-row > div{padding:16px 24px;}
.compare-row > div:first-child{
  border-right:1px solid var(--c-line);
  color:var(--c-text-2);
}
.compare-row > div:last-child{color:var(--c-text);}
.compare-row.highlight > div:last-child{color:var(--c-accent);font-weight:600;}
.compare-note{font-size:12.5px;color:var(--c-text-3);margin-top:14px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(14,59,47,.3);box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;
  font-size:16.5px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(14,59,47,.08);color:var(--c-primary);
  font-size:17px;font-weight:600;
  transition:transform .25s ease,background-color .2s ease,color .2s ease;
}
.faq-item[open] summary::after{
  transform:rotate(45deg);
  background:var(--c-accent);color:#fff;
}
.faq-body{padding:0 22px 22px;color:var(--c-text-2);line-height:1.9;font-size:15.5px;}

/* ============ CTA / 表单 ============ */
.cta-section{
  position:relative;
  background:var(--c-primary-deep);
  color:#E9EFEA;
  padding:88px 0;
  overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.cta-section .container{position:relative;}
.cta-card{
  background:var(--c-surface);
  color:var(--c-text);
  border-radius:var(--r-card);
  box-shadow:var(--sh-3);
  padding:40px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;
}
.cta-card h2{margin-bottom:10px;}
.cta-card .cta-sub{color:var(--c-text-2);font-size:15.5px;margin-bottom:24px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field-full{grid-column:1 / -1;}
.field label{font-size:14px;color:var(--c-text-2);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:var(--c-surface);
  padding:0 14px;
  height:48px;
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--c-text-2) 50%),linear-gradient(135deg,var(--c-text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(14,59,47,.12);
}
.field .error-msg{font-size:13px;color:var(--c-err);display:none;}
.field.has-error .error-msg{display:block;}
.field.has-error input,.field.has-error textarea{border-color:var(--c-err);}
.form-actions{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  margin-top:22px;flex-wrap:wrap;
}
.form-hint{font-size:13px;color:var(--c-text-3);margin:0;max-width:26em;}
.form-success{
  display:flex;align-items:center;gap:10px;
  margin-top:20px;
  padding:14px 18px;
  background:rgba(14,59,47,.06);
  border-left:3px solid var(--c-primary);
  border-radius:0 10px 10px 0;
  font-size:14.5px;color:var(--c-primary);font-weight:600;
}
.form-success[hidden]{display:none;}
.cta-contact{display:grid;gap:18px;align-content:start;border-left:1px solid var(--c-line);padding-left:40px;}
.cta-contact h3{font-size:17px;margin-bottom:4px;}
.cta-contact ul{display:grid;gap:14px;}
.cta-contact li{font-size:14.5px;color:var(--c-text-2);display:flex;gap:10px;align-items:flex-start;}
.cta-contact li svg{width:18px;height:18px;color:var(--c-accent);flex:0 0 auto;margin-top:4px;}

/* ============ 底部入口 ============ */
.page-links{border-top:1px solid var(--c-line);}
.page-links-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-deep);
  color:#E9EFEA;
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand .brand-mark{color:var(--c-amber);}
.footer-desc{font-size:14.5px;color:rgba(255,255,255,.62);line-height:1.85;max-width:30em;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links,.footer-info{display:grid;gap:12px;}
.footer-links a,.footer-info li{font-size:14.5px;color:rgba(255,255,255,.62);}
.footer-links a:hover{color:var(--c-amber);border-bottom:2px solid var(--c-amber);padding-bottom:2px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-menu a{padding:8px 10px;font-size:14px;}
  .nav-menu a:nth-child(6){display:none;}
}
@media (max-width:1024px){
  :root{--sec-y:64px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:fixed;inset:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-bg);
    padding:96px 24px 40px;
    transform:translateY(-10px);
    opacity:0;visibility:hidden;
    transition:transform .26s ease,opacity .26s ease,visibility .26s;
    overflow-y:auto;z-index:70;
  }
  body.nav-open .nav-menu{transform:none;opacity:1;visibility:visible;}
  .nav-menu a{
    display:flex;align-items:center;
    height:56px;padding:0 8px;
    font-size:16px;border-radius:0;
    border-bottom:1px solid var(--c-line);
  }
  .nav-menu a::after{display:none;}
  .nav-menu a:nth-child(6){display:flex;}
  .nav-menu a.active{background:rgba(14,59,47,.06);padding-left:14px;}
  .hero{padding:32px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-float{left:auto;right:16px;bottom:-20px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:none;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14);}
  .step-card{grid-template-columns:1fr;gap:18px;}
  .step-media img{aspect-ratio:16/9;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:32px;}
  .cta-contact{border-left:none;padding-left:0;border-top:1px solid var(--c-line);padding-top:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--sec-y:56px;}
  .container{padding:0 16px;}
  .nav-shell{min-height:56px;padding:0 14px;gap:12px;}
  .brand-text{font-size:15.5px;}
  .brand-text em{display:none;}
  .nav-actions .btn-sm{padding:9px 14px;font-size:13px;}
  .stat-cell{padding:20px 18px 18px 0;}
  .stat-num{font-size:34px;}
  .step-item{grid-template-columns:44px 1fr;gap:14px;}
  .step-dot{width:32px;height:32px;font-size:14px;}
  .step-axis::after{top:40px;}
  .step-card{padding:22px;}
  .step-num{font-size:64px;right:10px;}
  .compare-head,.compare-row{grid-template-columns:1fr;}
  .compare-head span:first-child{border-right:none;border-bottom:1px solid var(--c-line);}
  .compare-row > div:first-child{border-right:none;border-bottom:1px dashed var(--c-line);font-weight:600;color:var(--c-text);}
  .form-grid{grid-template-columns:1fr;}
  .form-actions{flex-direction:column;align-items:stretch;}
  .form-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-cell{border-right:none;border-bottom:1px solid rgba(255,255,255,.14);}
  .cta-card{padding:24px;}
  .page-links-inner{flex-direction:column;align-items:stretch;}
  .page-links-inner .btn{width:100%;}
}

/* roulang page: category4 */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;

  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:10px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);

  --sp-section:96px;
  --container:1200px;
}

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

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

body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
figure{margin:0;}

:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px 0;
  background:rgba(247,243,236,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:box-shadow .25s ease, border-color .25s ease, padding .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  box-shadow:var(--sh-2);
  border-bottom-color:var(--c-line);
  padding:10px 0;
}
.nav-shell{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
  padding:0 20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-surface);
  background:var(--c-primary);
  border-radius:50%;
  flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{
  font-size:16px;
  font-weight:700;
  color:var(--c-primary);
  letter-spacing:0;
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  color:var(--c-text-2);
  font-weight:500;
  font-size:13px;
  margin-left:4px;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1;
  justify-content:center;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:8px 13px;
  font-size:14.5px;
  color:var(--c-text-2);
  border-radius:var(--r-pill);
  transition:color .2s ease, background-color .2s ease;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:3px;
  border-radius:50%;
  background:var(--c-accent);
  transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{width:4px;}
.nav-menu a.active{
  color:var(--c-primary);
  font-weight:600;
  background:rgba(14,59,47,.08);
}
.nav-menu a.active::after{width:4px;background:var(--c-primary);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  border-radius:50%;
  color:var(--c-primary);
}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  transition:background-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-accent);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(14,59,47,.08);}
.btn-ghost:active{background:rgba(14,59,47,.14);}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:var(--c-amber);color:var(--c-primary-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-accent);
  border-bottom:2px solid transparent;
  transition:border-color .2s ease, color .2s ease;
}
.link-arrow:hover{border-bottom-color:var(--c-accent);}
.link-arrow svg{width:16px;height:16px;}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sp-section) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.section-tag{
  display:inline-block;
  padding:5px 14px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:var(--r-pill);
  margin-bottom:14px;
}
.section-title{
  font-size:29px;
  font-weight:700;
  line-height:1.35;
  color:var(--c-text);
}
.section-lead{
  margin-top:10px;
  font-size:15.5px;
  color:var(--c-text-2);
  max-width:640px;
}

/* ---------- Hero ---------- */
.page-hero{
  padding:40px 0 72px;
  background:
    repeating-linear-gradient(45deg, rgba(14,59,47,.028) 0 2px, transparent 2px 10px),
    linear-gradient(180deg,#FBF8F3 0%, var(--c-bg) 100%);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:28px;
}
.breadcrumb a{color:var(--c-text-2);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--c-accent);}
.crumb-sep{
  width:1px;height:12px;
  background:var(--c-line);
  display:inline-block;
}
.crumb-current{color:var(--c-text);font-weight:600;}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  line-height:1.25;
  margin:16px 0 18px;
}
.hero-title span{color:var(--c-primary);}
.hero-sub{
  font-size:17px;
  color:var(--c-text-2);
  max-width:520px;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-figure{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-3);
  aspect-ratio:4/3;
}
.hero-figure img{
  width:100%;height:100%;
  object-fit:cover;
}
.hero-float{
  position:absolute;
  left:18px;
  bottom:18px;
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:12px 18px;
  background:rgba(255,255,255,.94);
  border-radius:var(--r-btn);
  box-shadow:var(--sh-2);
}
.hero-float b{
  font-size:26px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1;
}
.hero-float span{font-size:13px;color:var(--c-text-2);}
.hero-marks{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--c-line);
}
.hero-mark{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-text-2);
}
.hero-mark svg{width:18px;height:18px;color:var(--c-primary);flex-shrink:0;}

/* ---------- 速览条 ---------- */
.strip{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  margin-top:-38px;
  position:relative;
  z-index:5;
}
.strip-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.strip-item{
  padding:26px 24px;
  border-right:1px solid var(--c-line);
}
.strip-item:last-child{border-right:none;}
.strip-num{
  display:block;
  font-size:40px;
  font-weight:700;
  line-height:1;
  color:var(--c-primary);
}
.strip-num small{font-size:17px;font-weight:600;margin-left:4px;color:var(--c-text-2);}
.strip-label{
  display:block;
  margin-top:10px;
  font-size:14px;
  color:var(--c-text-2);
}

/* ---------- 图册筛选 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
}
.filter-btn{
  padding:9px 20px;
  font-size:14px;
  color:var(--c-text-2);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  transition:color .2s ease, background-color .2s ease, border-color .2s ease;
}
.filter-btn:hover{color:var(--c-primary);border-color:rgba(14,59,47,.35);}
.filter-btn.is-active{
  color:#fff;
  background:var(--c-primary);
  border-color:var(--c-primary);
  font-weight:600;
}

/* ---------- 图册网格 ---------- */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.gallery-card{
  display:block;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.gallery-card:hover{
  border-color:rgba(14,59,47,.3);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.gallery-thumb{
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--c-surface-2);
}
.gallery-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.gallery-card:hover .gallery-thumb img{transform:scale(1.03);}
.gallery-body{padding:16px 18px 20px;}
.gallery-badge{
  display:inline-block;
  padding:3px 10px;
  font-size:12px;
  font-weight:600;
  color:var(--c-accent);
  background:rgba(196,85,47,.1);
  border-radius:var(--r-pill);
  margin-bottom:10px;
}
.gallery-title{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  color:var(--c-text);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  transition:color .2s ease;
}
.gallery-card:hover .gallery-title{color:var(--c-primary);}
.gallery-desc{
  margin-top:8px;
  font-size:14px;
  line-height:1.6;
  color:var(--c-text-3);
}
.gallery-empty{
  grid-column:1/-1;
  min-height:180px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  background:var(--c-surface-2);
  border-radius:var(--r-card);
  color:var(--c-text-3);
  font-size:14px;
}
.gallery-empty .geo{
  width:52px;height:52px;
  border:1.5px solid var(--c-text-3);
  border-radius:50%;
  position:relative;
  opacity:.7;
}
.gallery-empty .geo::after{
  content:"";
  position:absolute;
  inset:12px;
  border:1.5px solid var(--c-text-3);
  border-radius:50%;
}

/* ---------- 分区说明 ---------- */
.dim-section{background:var(--c-surface-2);}
.dim-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.dim-item{
  background:var(--c-surface);
  border-radius:var(--r-card);
  padding:30px 26px;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.dim-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(14,59,47,.08);
  color:var(--c-primary);
  margin-bottom:18px;
}
.dim-icon svg{width:24px;height:24px;stroke-width:1.5;}
.dim-item h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.dim-item p{
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.8;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--c-primary-deep);
  border-radius:20px;
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#F2F6F2;
  box-shadow:var(--sh-3);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(45deg, rgba(255,255,255,.04) 0 2px, transparent 2px 12px);
  pointer-events:none;
}
.cta-band-text{position:relative;z-index:1;}
.cta-band h2{
  font-size:26px;
  font-weight:700;
  line-height:1.35;
}
.cta-band p{
  margin-top:10px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  max-width:600px;
}
.cta-band .btn{position:relative;z-index:1;flex-shrink:0;}

/* ---------- 浏览提示 ---------- */
.tips-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.tip-item{
  background:var(--c-surface);
  padding:28px 24px;
}
.tip-index{
  font-size:13px;
  font-weight:700;
  color:var(--c-accent);
  letter-spacing:.05em;
}
.tip-item h3{
  margin-top:12px;
  font-size:17px;
  font-weight:600;
  line-height:1.5;
}
.tip-item p{
  margin-top:8px;
  font-size:14px;
  color:var(--c-text-2);
  line-height:1.75;
}

/* ---------- 底部双入口 ---------- */
.end-actions{
  padding:56px 0 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  border-top:1px solid var(--c-line);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-deep);
  color:#E9EFEA;
  padding:72px 0 28px;
  margin-top:var(--sp-section);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.62);}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:340px;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-links li,.footer-info li{margin-bottom:12px;}
.footer-links a,.footer-info li{
  font-size:14px;
  color:rgba(255,255,255,.62);
  transition:color .2s ease;
}
.footer-links a:hover{
  color:var(--c-amber);
  border-bottom:2px solid var(--c-amber);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .nav-menu a{padding:8px 10px;font-size:14px;}
  .nav-menu a:nth-child(5){display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .gallery-grid{grid-template-columns:repeat(3,1fr);}
  .dim-grid{grid-template-columns:1fr 1fr;}
  .tips-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}

@media (max-width:900px){
  .nav-menu{
    display:none;
    position:fixed;
    inset:0;
    z-index:80;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:96px 24px 40px;
    background:var(--c-bg);
    overflow-y:auto;
  }
  .nav-menu.is-open{display:flex;}
  .nav-menu a{
    display:block;
    padding:0 4px;
    height:56px;
    line-height:56px;
    font-size:17px;
    border-radius:0;
    border-bottom:1px solid var(--c-line);
  }
  .nav-menu a::after{display:none;}
  .nav-menu a.active{background:transparent;padding-left:14px;}
  .nav-menu .nav-drawer-cta{margin-top:28px;}
  .nav-toggle{display:inline-flex;}
  body.nav-locked{overflow:hidden;}
}

@media (max-width:768px){
  :root{--sp-section:52px;}
  .container{padding:0 16px;}
  .nav-shell{height:56px;padding:0 14px;}
  .brand-text{font-size:15px;}
  .brand-text em{display:none;}
  .nav-actions .btn{display:none;}
  .page-hero{padding:28px 0 52px;}
  .strip{margin-top:-28px;}
  .strip-grid{grid-template-columns:1fr 1fr;}
  .strip-item{border-bottom:1px solid var(--c-line);}
  .strip-item:nth-child(2n){border-right:none;}
  .strip-item:nth-last-child(-n+2){border-bottom:none;}
  .strip-num{font-size:32px;}
  .gallery-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .dim-grid{grid-template-columns:1fr;}
  .tips-grid{grid-template-columns:1fr;}
  .cta-band{
    flex-direction:column;
    align-items:flex-start;
    padding:34px 24px;
    border-radius:16px;
  }
  .cta-band .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .hero-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .end-actions{flex-direction:column;align-items:stretch;}
  .end-actions .btn{width:100%;}
}

@media (max-width:520px){
  .gallery-grid{grid-template-columns:1fr;}
  .strip-grid{grid-template-columns:1fr;}
  .strip-item{border-right:none;border-bottom:1px solid var(--c-line);}
  .strip-item:last-child{border-bottom:none;}
  .hero-title{font-size:28px;}
  .section-title{font-size:23px;}
  .btn{padding:13px 22px;font-size:14.5px;}
}

/* roulang page: category5 */
:root{
  --c-primary:#0E3B2F;
  --c-primary-deep:#092A21;
  --c-accent:#C4552F;
  --c-amber:#E0A94B;
  --c-bg:#F7F3EC;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFE8DC;
  --c-line:#E1D8CA;
  --c-text:#16201C;
  --c-text-2:#4E5B55;
  --c-text-3:#7E8A84;
  --c-ok:#1F7A5C;
  --c-warn:#B4541F;
  --c-err:#A83232;
  --sh-1:0 1px 2px rgba(14,59,47,.06);
  --sh-2:0 6px 18px rgba(14,59,47,.08);
  --sh-3:0 14px 34px rgba(14,59,47,.12);
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:10px;
  --font:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;color:var(--c-text);}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;}
h2{font-size:clamp(24px,2.4vw,30px);line-height:1.35;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 顶部悬浮胶囊导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:12px 0;
  background:rgba(247,243,236,.82);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{box-shadow:var(--sh-2);border-bottom-color:var(--c-line);}
.nav-shell{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:64px;
  padding:0 10px 0 20px;
  background:rgba(255,255,255,.74);
  border:1px solid var(--c-line);
  border-radius:999px;
  box-shadow:var(--sh-1);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:32px;height:32px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:999px;
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{
  display:inline-flex;align-items:baseline;gap:6px;
  font-size:18px;font-weight:700;color:var(--c-primary);
  white-space:nowrap;
}
.brand-text em{font-style:normal;font-size:13px;font-weight:600;color:var(--c-accent);}
.nav-menu{display:flex;align-items:center;gap:2px;}
.nav-menu a{
  position:relative;
  padding:9px 14px;
  font-size:15px;
  color:var(--c-text-2);
  border-radius:999px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:50%;bottom:4px;
  width:0;height:3px;
  border-radius:999px;
  background:var(--c-text-2);
  transform:translateX(-50%);
  transition:width .2s ease;
}
.nav-menu a:hover{color:var(--c-text);}
.nav-menu a:hover::after{width:12px;}
.nav-menu a.active{color:var(--c-primary);font-weight:600;background:rgba(14,59,47,.08);}
.nav-menu a.active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:8px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:transparent;
  border:1px solid var(--c-line);
  border-radius:999px;
  color:var(--c-primary);
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(14,59,47,.08);}
.nav-toggle svg{width:22px;height:22px;}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-accent);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(14,59,47,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-light:hover{background:rgba(255,255,255,.2);transform:translateY(-1px);}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-accent);font-weight:600;font-size:15px;
  border-bottom:2px solid var(--c-accent);
  padding-bottom:2px;
  transition:border-bottom-width .2s ease,color .2s ease;
}
.link-arrow:hover{border-bottom-width:3px;}

/* ============ 页面标题条 ============ */
.page-hero{
  position:relative;
  padding:76px 0 68px;
  border-bottom:1px solid var(--c-line);
  background-image:linear-gradient(100deg,rgba(247,243,236,.97) 0%,rgba(247,243,236,.88) 46%,rgba(247,243,236,.62) 100%),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:var(--c-text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--c-text-2);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb .current{color:var(--c-text-3);}
.eyebrow{
  display:inline-block;
  padding:6px 14px;
  margin-bottom:16px;
  font-size:13px;font-weight:600;
  letter-spacing:.05em;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:999px;
}
.page-hero h1{max-width:820px;}
.page-hero-desc{
  max-width:720px;
  margin-top:18px;
  font-size:17px;
  color:var(--c-text-2);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;
  font-size:13px;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:999px;
}
.tag-accent{color:var(--c-accent);background:rgba(196,85,47,.1);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--c-text-2);font-size:16px;margin:0;}
.section-head .rule{
  display:block;width:48px;height:3px;border-radius:999px;
  background:var(--c-accent);margin-bottom:18px;
}

/* ============ 问答区 ============ */
.faq-columns{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px 24px;
  align-items:start;
}
.faq-col{display:grid;gap:16px;}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(14,59,47,.3);}
.faq-item[open]{box-shadow:var(--sh-2);border-color:rgba(14,59,47,.28);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
  padding:14px 20px;
  font-size:16px;font-weight:600;color:var(--c-text);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  position:relative;flex:none;
  width:16px;height:16px;
  transition:transform .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;
  background:var(--c-accent);border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-a{
  padding:0 20px 20px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.9;
  border-top:1px solid var(--c-line);
  padding-top:16px;
  margin-top:0;
}

/* ============ 延伸阅读条目 ============ */
.brief-list{display:grid;gap:14px;}
.brief-item{
  display:grid;
  grid-template-columns:128px 1fr auto;
  gap:20px;
  align-items:center;
  padding:14px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.brief-item:hover{
  border-color:rgba(14,59,47,.3);
  box-shadow:var(--sh-2);
  transform:translateY(-1px);
}
.brief-item img{
  width:128px;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:12px;
  background:var(--c-surface-2);
}
.brief-badge{
  display:inline-block;
  padding:4px 12px;
  margin-bottom:8px;
  font-size:12px;font-weight:600;
  color:var(--c-primary);
  background:rgba(14,59,47,.08);
  border-radius:999px;
}
.brief-item h3{font-size:18px;margin-bottom:6px;}
.brief-item p{font-size:15px;color:var(--c-text-2);margin:0;}
.brief-go{
  font-size:14px;font-weight:600;color:var(--c-accent);
  white-space:nowrap;
  padding-right:8px;
}

/* ============ 核对清单 ============ */
.check-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px 24px;
}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;
  background:var(--c-surface-2);
  border-radius:12px;
  font-size:15px;
  color:var(--c-text-2);
}
.check-dot{
  flex:none;
  width:22px;height:22px;
  margin-top:4px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;
  background:rgba(14,59,47,.12);
  color:var(--c-primary);
  font-size:12px;font-weight:700;
}
.check-item strong{display:block;color:var(--c-text);font-size:16px;margin-bottom:2px;}

/* ============ 转化带 ============ */
.cta-band{
  position:relative;
  padding:72px 0;
  background:var(--c-primary-deep);
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-copy{max-width:620px;}
.cta-copy h2{color:#fff;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.72);font-size:16px;margin:0;}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.cta-actions .link-arrow{color:var(--c-amber);border-bottom-color:var(--c-amber);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-deep);
  color:#E9EFEA;
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px 32px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text em{color:var(--c-amber);}
.footer-brand .brand-mark{color:#fff;background:rgba(255,255,255,.12);}
.footer-desc{
  margin-top:18px;
  font-size:15px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:340px;
}
.footer-title{
  font-size:15px;font-weight:600;color:#fff;
  margin-bottom:18px;
}
.footer-links li,.footer-info li{margin-bottom:12px;font-size:14.5px;color:rgba(255,255,255,.62);}
.footer-links a{
  color:rgba(255,255,255,.72);
  transition:color .2s ease,border-color .2s ease;
  border-bottom:2px solid transparent;
  padding-bottom:2px;
}
.footer-links a:hover{color:var(--c-amber);border-bottom-color:var(--c-amber);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-menu{
    position:fixed;
    inset:0;
    z-index:70;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:96px 24px 32px;
    background:var(--c-bg);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    overflow-y:auto;
  }
  body.nav-open .nav-menu{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-menu a{
    min-height:56px;
    display:flex;align-items:center;
    font-size:16px;
    border-radius:12px;
    padding:0 16px;
    border-bottom:1px solid var(--c-line);
  }
  .nav-menu a::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-primary{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 28px;}
  .section{padding:64px 0;}
  .page-hero{padding:56px 0 48px;}
}

@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .faq-columns{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .brief-item{grid-template-columns:96px 1fr;gap:16px;}
  .brief-item img{width:96px;}
  .brief-go{grid-column:2;padding-right:0;}
  .cta-band{padding:56px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
}

@media (max-width:520px){
  .nav-shell{min-height:56px;padding:0 8px 0 14px;}
  .brand-text{font-size:16px;gap:4px;}
  .brand-text em{font-size:12px;}
  .page-hero{padding:44px 0 40px;}
  .hero-tags{gap:8px;}
  .tag{font-size:12px;padding:5px 12px;}
  .brief-item{grid-template-columns:1fr;}
  .brief-item img{width:100%;aspect-ratio:16/9;}
  .brief-go{grid-column:1;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-actions .btn{flex:1 1 100%;}
  .faq-item summary{font-size:15.5px;padding:12px 16px;}
  .faq-a{padding:16px 16px 18px;}
}