/* roulang page: index */
:root{
  --ink:#0E5B4F;
  --ink-deep:#0A3F37;
  --ink-lite:#E6F0ED;
  --amber:#C8702A;
  --amber-deep:#B0621F;
  --amber-lite:#FDF1E3;
  --text:#33413D;
  --heading:#14201D;
  --muted:#6B7A75;
  --line:#E4E0D6;
  --sand:#F7F5EF;
  --dark:#0C2B26;
  --foot:#0A2B26;
  --card:#FFFFFF;
  --danger:#B42318;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(20,32,29,.06),0 8px 24px rgba(20,32,29,.06);
  --shadow-2:0 10px 30px rgba(20,32,29,.10);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{color:var(--heading);margin:0;font-weight:700;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;letter-spacing:-.01em;}
h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;letter-spacing:-.005em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul{margin:0;}

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

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;font-size:14px;
}
.skip-link:focus{left:0;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:1024px){.container{padding:0 32px;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(20,32,29,.05);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:64px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:28px;}
.nav-left{display:none;}
.nav-right .nav-link,.nav-right .nav-cta{display:none;}

.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:20px;font-weight:700;color:var(--ink);
  letter-spacing:.005em;white-space:nowrap;
}
.brand::before{
  content:"";width:11px;height:11px;border-radius:3px;
  background:var(--amber);flex:none;
}
.brand:hover{color:var(--ink-deep);}

.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{color:var(--ink);}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  background:var(--amber);border-radius:2px;
}

.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--ink);background:var(--ink-lite);}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--heading);transition:transform .2s ease;}

@media(min-width:1024px){
  .nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;height:72px;}
  .nav-left{display:flex;justify-content:flex-start;}
  .nav-right{display:flex;justify-content:flex-end;}
  .nav-right .nav-link,.nav-right .nav-cta{display:inline-flex;}
  .nav-toggle{display:none;}
}

.mobile-menu{
  display:none;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 14px 28px rgba(20,32,29,.10);
  padding-bottom:8px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu .mm-link{
  display:flex;align-items:center;min-height:48px;
  padding:0 20px;font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease,color .2s ease;
}
.mobile-menu .mm-link:hover{background:var(--ink-lite);color:var(--ink);}
.mobile-menu .mm-link[aria-current="page"]{color:var(--ink);font-weight:600;}
.mobile-menu .mm-cta{
  display:flex;align-items:center;justify-content:center;
  margin:16px 20px 8px;height:46px;
  background:var(--ink);color:#fff;font-weight:600;font-size:15px;
  border-radius:10px;
}
@media(min-width:1024px){.mobile-menu{display:none !important;}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--ink-deep);transform:translateY(-1px);}
.btn-outline{background:#fff;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink-lite);transform:translateY(-1px);}
.btn-amber{background:var(--amber);color:#fff;}
.btn-amber:hover{background:var(--amber-deep);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease;
}
.btn-link .arrow{transition:transform .2s ease;display:inline-block;}
.btn-link:hover{border-bottom-color:var(--ink);}
.btn-link:hover .arrow{transform:translateX(2px);}

/* ============ 首屏 ============ */
.hero{
  position:relative;
  padding:48px 0 56px;
  background:linear-gradient(180deg,#FBF9F4 0%,var(--sand) 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(14,91,79,.09),rgba(14,91,79,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:34px;}
.hero-copy{max-width:600px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--ink);
  background:var(--ink-lite);border-radius:var(--r-badge);padding:5px 11px;
}
.hero h1{margin-top:18px;}
.hero-sub{
  margin-top:18px;font-size:17px;line-height:1.85;color:var(--muted);max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-trust{
  display:flex;align-items:center;gap:9px;
  margin-top:22px;font-size:13px;color:var(--muted);
}
.hero-trust::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--amber);flex:none;
}
.hero-media{
  border-radius:var(--r-img);overflow:hidden;background:var(--ink-lite);
  aspect-ratio:3/2;box-shadow:var(--shadow-1);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
@media(min-width:1024px){
  .hero{padding:72px 0 88px;}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
}

/* ============ 数据条 ============ */
.stats-band{background:var(--dark);color:#fff;}
.stats-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:28px 24px;padding:38px 0;
}
@media(min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr);padding:42px 0;}}
.stat-num{
  font-size:clamp(28px,3.4vw,36px);font-weight:700;line-height:1.1;
  color:var(--amber);font-variant-numeric:tabular-nums;
}
.stat-num .suffix{font-size:16px;font-weight:600;margin-left:2px;}
.stat-label{font-size:14px;color:rgba(255,255,255,.74);margin-top:8px;line-height:1.6;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:#fff;}
.section-head{max-width:720px;margin-bottom:38px;}
.section-head .label{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--muted);margin-bottom:12px;
}
.section-title{position:relative;padding-left:14px;}
.section-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;
  background:var(--ink);border-radius:2px;
}
.section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--muted);}
.section-head-row{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;}

/* ============ 功能交错网格 ============ */
.feature-rows{display:grid;gap:44px;}
@media(min-width:1024px){.feature-rows{gap:64px;}}
.feature-row{display:grid;gap:26px;align-items:center;}
@media(min-width:1024px){
  .feature-row{grid-template-columns:1fr 1fr;gap:56px;}
  .feature-row.reverse .feature-text{order:2;}
  .feature-row.reverse .feature-media{order:1;}
}
.feature-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--amber);margin-bottom:10px;
}
.feature-text h3{margin-bottom:12px;}
.feature-text p{font-size:15px;line-height:1.85;color:var(--muted);}
.feature-list{list-style:none;padding:0;margin:18px 0 0;}
.feature-list li{
  position:relative;padding-left:18px;margin-bottom:10px;
  font-size:15px;line-height:1.8;color:var(--text);
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;
  background:var(--ink);border-radius:2px;
}
.feature-more{margin-top:18px;}
.feature-media{
  border-radius:var(--r-card);overflow:hidden;background:var(--ink-lite);
  aspect-ratio:4/3;box-shadow:var(--shadow-1);
}
.feature-media img{width:100%;height:100%;object-fit:cover;}

/* ============ 场景卡片 ============ */
.scene-grid{display:grid;gap:20px;}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.scene-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.scene-media{aspect-ratio:16/9;overflow:hidden;background:var(--ink-lite);}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:19px;}
.scene-body p{font-size:14px;line-height:1.8;color:var(--muted);}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-block;font-size:12px;line-height:1.5;font-weight:600;
  padding:3px 9px;border-radius:var(--r-badge);letter-spacing:.02em;
}
.badge-ink{background:var(--ink-lite);color:var(--ink-deep);}
.badge-amber{background:var(--amber-lite);color:#9A5218;}
.badge-gray{background:#F1EFE8;color:var(--muted);}

/* ============ 案例 ============ */
.case-grid{display:grid;gap:20px;}
@media(min-width:1024px){
  .case-grid{grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;}
  .case-card.big{grid-row:span 2;}
}
.case-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-media{aspect-ratio:16/9;overflow:hidden;background:var(--ink-lite);}
.case-card.big .case-media{aspect-ratio:4/3;}
.case-media img{width:100%;height:100%;object-fit:cover;}
.case-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.case-body h3{font-size:19px;}
.case-body p{font-size:14px;line-height:1.8;color:var(--muted);}
.case-metric{
  font-size:28px;font-weight:700;color:var(--amber);line-height:1.15;
  font-variant-numeric:tabular-nums;
}
.case-metric .unit{font-size:14px;font-weight:600;margin-left:4px;color:var(--muted);}

/* ============ 服务档位 ============ */
.price-grid{display:grid;gap:22px;}
@media(min-width:1024px){.price-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:center;}}
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:30px 26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.price-card:hover{box-shadow:var(--shadow-2);}
.price-card.featured{border-color:var(--ink);}
@media(min-width:1024px){
  .price-card.featured{transform:translateY(-8px);box-shadow:var(--shadow-2);}
  .price-card.featured:hover{transform:translateY(-10px);}
}
.price-tag{
  position:absolute;top:-12px;left:26px;
  background:var(--amber);color:#fff;font-size:12px;font-weight:600;
  padding:3px 10px;border-radius:var(--r-badge);
}
.price-name{font-size:18px;font-weight:600;color:var(--heading);}
.price-note{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;min-height:48px;}
.price-amount{
  display:flex;align-items:baseline;gap:6px;margin-top:18px;
  font-size:38px;font-weight:700;color:var(--heading);line-height:1;
  font-variant-numeric:tabular-nums;
}
.price-amount .unit{font-size:14px;font-weight:500;color:var(--muted);}
.price-list{list-style:none;padding:0;margin:22px 0 0;}
.price-list li{
  position:relative;padding-left:16px;margin-bottom:8px;
  font-size:14px;line-height:1.7;color:var(--text);
}
.price-list li::before{
  content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;
  border-radius:2px;background:var(--ink);
}
.price-card .btn{width:100%;margin-top:24px;}

/* ============ 最新信息 ============ */
.post-grid{display:grid;gap:20px;}
@media(min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8D3C6;}
.post-cover{aspect-ratio:16/9;overflow:hidden;background:var(--ink-lite);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--heading);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-date{font-size:12px;color:var(--muted);margin-top:auto;padding-top:4px;}
.empty-state{
  grid-column:1 / -1;
  border:1px dashed var(--line);background:#fff;border-radius:var(--r-card);
  padding:48px 24px;text-align:center;
}
.empty-icon{
  width:46px;height:46px;margin:0 auto 16px;border-radius:12px;
  background:var(--ink-lite);display:flex;align-items:center;justify-content:center;
  color:var(--ink);font-size:20px;font-weight:700;
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:62px;padding:16px 0;position:relative;
  font-size:16px;font-weight:600;color:var(--heading);
  transition:color .2s ease,padding .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:600;color:var(--ink);flex:none;line-height:1;
}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{color:var(--ink);}
.faq-item[open] summary{padding-left:15px;}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--ink);border-radius:2px;
}
.faq-answer{
  padding:0 0 22px 15px;font-size:15px;line-height:1.8;color:var(--muted);
  max-width:860px;
}

/* ============ CTA 带 ============ */
.cta-section{background:var(--dark);color:#fff;padding:56px 0;}
@media(min-width:1024px){.cta-section{padding:72px 0;}}
.cta-inner{display:grid;gap:26px;align-items:center;}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.4fr auto;gap:48px;}}
.cta-inner h2{color:#fff;}
.cta-inner p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.75);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--foot);color:rgba(255,255,255,.76);padding:56px 0 0;}
@media(min-width:1024px){.site-footer{padding-top:72px;}}
.footer-grid{display:grid;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:19px;font-weight:700;color:#fff;margin-bottom:14px;
}
.footer-brand::before{
  content:"";width:11px;height:11px;border-radius:3px;background:var(--amber);flex:none;
}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-link{
  display:block;font-size:14px;line-height:2.1;color:rgba(255,255,255,.72);
  transition:color .2s ease;
}
.footer-link:hover{color:var(--amber);text-decoration:underline;}
.footer-text{font-size:14px;line-height:2.1;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;font-size:13px;line-height:1.8;
  color:rgba(255,255,255,.56);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--amber);text-decoration:underline;}

@media(max-width:519px){
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: article */
:root{
  --primary:#0E5B4F;
  --primary-dark:#0A3F37;
  --primary-light:#E6F0ED;
  --amber:#C8702A;
  --amber-light:#FDF1E3;
  --ink:#14201D;
  --body:#33413D;
  --muted:#6B7A75;
  --border:#E4E0D6;
  --bg:#F7F5EF;
  --dark:#0C2B26;
  --footer-bg:#0A2B26;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-sm:0 1px 2px rgba(20,32,29,.06), 0 8px 24px rgba(20,32,29,.06);
  --shadow-hover:0 10px 30px rgba(20,32,29,.10);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",ui-sans-serif,system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--border);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(20,32,29,.07)}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;height:72px;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;
}
@media(min-width:1024px){.header-inner{padding:0 32px}}
.nav-left{display:flex;align-items:center;gap:28px;justify-content:flex-start}
.nav-right{display:flex;align-items:center;gap:22px;justify-content:flex-end}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--body);padding:6px 0;transition:color .2s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--amber);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;font-size:20px;font-weight:700;color:var(--primary);letter-spacing:-.01em}
.brand-mark{width:22px;height:22px;border-radius:5px;background:var(--primary);position:relative;flex:none}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--amber)}
.brand:hover{color:var(--primary-dark)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  padding:10px 20px;border-radius:var(--radius-btn);white-space:nowrap;
  transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,91,79,.22)}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--border);border-radius:var(--radius-btn);
  width:44px;height:40px;align-items:center;justify-content:center;gap:4px;flex-direction:column;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--border)}
.mobile-panel.is-open{display:block}
.mobile-link{display:flex;align-items:center;height:48px;padding:0 20px;border-bottom:1px solid var(--border);font-size:15px;color:var(--body)}
.mobile-link.is-active{color:var(--primary);font-weight:600;background:var(--primary-light)}
.mobile-link:hover{background:var(--primary-light);color:var(--primary)}
.mobile-cta-wrap{padding:16px 20px 20px}
.mobile-cta-wrap .nav-cta{width:100%}
@media(max-width:1023px){
  .header-inner{grid-template-columns:1fr auto;height:64px}
  .nav-left,.nav-right{display:none}
  .brand{justify-self:start;font-size:19px}
  .nav-toggle{display:inline-flex}
}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;transition:all .2s ease;line-height:1.2;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,91,79,.24)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);transform:translateY(-1px)}
.btn-amber{background:var(--amber);color:#fff}
.btn-amber:hover{background:#B3621F;transform:translateY(-1px);box-shadow:0 8px 20px rgba(200,112,42,.26)}
.badge{display:inline-flex;align-items:center;font-size:12px;font-weight:600;letter-spacing:.04em;padding:4px 10px;border-radius:6px;line-height:1.5}
.badge-primary{background:var(--primary-light);color:var(--primary-dark)}
.badge-neutral{background:#F1EFE8;color:var(--muted)}
.badge-amber{background:var(--amber-light);color:#9A5518}

/* ---------- 文章头部 ---------- */
.article-head{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--primary-light) 100%);
  border-bottom:1px solid var(--border);
  padding:34px 0 42px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C3C9C5}
.breadcrumb .current{color:var(--body);font-weight:500}
.article-head h1{
  font-size:clamp(26px,4vw,42px);line-height:1.28;font-weight:700;color:var(--ink);
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:20px;font-size:14px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3C9C5}
.article-lead{margin-top:18px;max-width:820px;font-size:16px;line-height:1.8;color:var(--body)}

/* ---------- 正文区 ---------- */
.article-section{padding:52px 0 72px}
.article-card{
  max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);padding:52px 60px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--body)}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.38;margin:44px 0 16px;padding-left:15px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--primary)}
.article-body h3{font-size:20px;font-weight:600;line-height:1.45;margin:32px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--ink)}
.article-body p{margin:0 0 1em}
.article-body strong{color:var(--ink)}
.article-body ul{list-style:none;margin:0 0 1.2em;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:12px;line-height:1.8}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:1px;background:var(--primary)}
.article-body ol{list-style:none;counter-reset:item;margin:0 0 1.2em;padding:0}
.article-body ol li{counter-increment:item;position:relative;padding-left:38px;margin-bottom:14px;line-height:1.8}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:.15em;
  color:var(--primary);font-weight:700;font-size:14px;letter-spacing:.04em;
}
.article-body blockquote{
  margin:26px 0;background:var(--primary-light);border-left:3px solid var(--primary);
  border-radius:0 10px 10px 0;padding:20px 24px;color:var(--ink);font-size:16px;line-height:1.8;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px 0 8px}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;margin:22px 0}
.article-body th,.article-body td{border-bottom:1px solid var(--border);padding:12px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--primary-light);color:var(--ink);font-weight:600}
.article-body code{font-family:var(--font-mono);font-size:14px;background:#F1EFE8;border-radius:10px;padding:2px 7px}
.article-body pre{background:#F1EFE8;border-radius:10px;padding:18px 20px;overflow-x:auto;margin:22px 0}
.article-body pre code{background:none;padding:0}
.article-body a{color:var(--primary);border-bottom:1px dashed var(--primary)}
.article-body a:hover{border-bottom-style:solid}
.article-body hr{border:none;border-top:1px solid var(--border);margin:36px 0}
.article-empty{text-align:center;padding:24px 0 8px}
.article-empty h2{font-size:24px;margin-bottom:12px}
.article-empty p{color:var(--muted);margin-bottom:24px;font-size:16px}
@media(max-width:768px){
  .article-card{padding:28px 20px;border-radius:12px}
  .article-body{font-size:16.5px}
}

/* ---------- 维护说明条 ---------- */
.info-strip{max-width:880px;margin:0 auto 48px;display:grid;gap:16px;grid-template-columns:repeat(3,1fr)}
.info-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-sm)}
.info-item .num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--amber)}
.info-item h3{font-size:16px;font-weight:600;margin:8px 0 6px}
.info-item p{font-size:14px;color:var(--muted);line-height:1.7}
@media(max-width:900px){.info-strip{grid-template-columns:1fr}}

/* ---------- 相关分类与返回 ---------- */
.related-section{max-width:880px;margin:0 auto;padding-top:8px}
.related-head{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.related-head .line{flex:1;height:1px;background:var(--border)}
.related-head h2{font-size:20px;font-weight:700;white-space:nowrap;padding-left:13px;position:relative}
.related-head h2::before{content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:3px;border-radius:2px;background:var(--primary)}
.related-grid{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
.related-card{
  display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:16px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6D0C2}
.related-thumb{width:96px;height:66px;border-radius:10px;overflow:hidden;flex:none;background:var(--primary-light)}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-body h3{font-size:16px;font-weight:600;line-height:1.45;margin-bottom:6px}
.related-card:hover .related-body h3{color:var(--primary)}
.related-body p{font-size:13px;color:var(--muted);line-height:1.6}
.related-actions{margin-top:32px;padding-top:26px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;gap:14px}
@media(max-width:768px){
  .related-grid{grid-template-columns:1fr}
  .related-thumb{width:84px;height:60px}
}

/* ---------- 尾部 CTA ---------- */
.cta-band{background:var(--dark);margin-top:80px;padding:64px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;max-width:640px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;margin-top:10px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media(max-width:768px){.cta-band{padding:48px 0;margin-top:56px}.cta-actions{width:100%}.cta-actions .btn{flex:1;min-width:150px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#fff;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand{font-size:19px;font-weight:700;color:#fff;display:inline-block;margin-bottom:14px}
.footer-brand:hover{color:#E9C79C}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:12px;transition:color .2s ease}
.footer-link:hover{color:#E9A66A;text-decoration:underline;text-underline-offset:4px}
.footer-text{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.58);
}
.footer-bottom a{color:rgba(255,255,255,.68)}
.footer-bottom a:hover{color:#E9A66A;text-decoration:underline;text-underline-offset:4px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding:48px 0 22px}}

/* roulang page: category1 */
:root{
  --brand:#0E5B4F;
  --brand-dark:#0A3F37;
  --brand-light:#E6F0ED;
  --amber:#C8702A;
  --amber-light:#FDF1E3;
  --ink:#14201D;
  --text:#33413D;
  --muted:#6B7A75;
  --line:#E4E0D6;
  --bg:#F7F5EF;
  --card:#FFFFFF;
  --dark:#0C2B26;
  --footer:#0A2B26;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(20,32,29,.06), 0 8px 24px rgba(20,32,29,.06);
  --shadow-2:0 10px 30px rgba(20,32,29,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.site-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0}
.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}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,32,29,.06),0 8px 24px rgba(20,32,29,.05)}
.nav-shell{display:flex;align-items:center;height:72px;gap:16px}
.nav-left,.nav-right{display:none}
.brand{
  order:-1;margin-right:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:20px;font-weight:700;color:var(--brand);white-space:nowrap;letter-spacing:.01em;
}
.brand-mark{width:10px;height:10px;border-radius:2px;background:var(--amber);display:inline-block}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--amber);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-light);border-color:#cfe3dd}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--line)}
.mobile-panel.is-open{display:block}
.mobile-panel a.m-panel-link{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.m-panel-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-light)}
.mobile-panel .m-panel-cta{padding:16px 20px}
@media (min-width:1024px){
  .nav-shell{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
  .nav-left{display:flex;align-items:center;gap:28px;justify-content:flex-start}
  .nav-right{display:flex;align-items:center;gap:24px;justify-content:flex-end}
  .brand{order:0;margin-right:0;justify-self:center}
  .nav-toggle,.mobile-panel{display:none !important}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;line-height:1.2;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-light);transform:translateY(-1px)}
.btn-amber{background:var(--amber);color:#fff}
.btn-amber:hover{background:#a95a1e;transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.text-link{color:var(--brand);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.text-link .arrow{transition:transform .2s ease}
.text-link:hover .arrow{transform:translateX(2px)}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 页头标题带 ---------- */
.page-hero{background:var(--brand-light);border-bottom:1px solid #d5e5e0;padding:56px 0 48px}
@media (min-width:1024px){.page-hero{padding:76px 0 60px}}
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#b6c4bf}
.crumb .current{color:var(--ink)}
.page-title{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;color:var(--ink);letter-spacing:-.01em;
  padding-left:18px;position:relative;
}
.page-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:3px;background:var(--brand);
}
.page-sub{margin-top:16px;font-size:15px;color:var(--muted);max-width:760px;line-height:1.8}
.hero-facts{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media (min-width:640px){.hero-facts{grid-template-columns:repeat(3,1fr);gap:20px}}
.fact{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--shadow-1)}
.fact .fact-no{font-size:13px;font-weight:700;color:var(--amber);letter-spacing:.08em}
.fact .fact-t{font-size:15px;font-weight:600;color:var(--ink);margin-top:6px}
.fact .fact-d{font-size:13.5px;color:var(--muted);margin-top:4px;line-height:1.7}

/* ---------- 主体布局 ---------- */
.main-wrap{padding:56px 0 0}
@media (min-width:1024px){.main-wrap{padding:80px 0 0}}
.layout{display:grid;grid-template-columns:1fr;gap:28px;align-items:start}
@media (min-width:1024px){.layout{grid-template-columns:236px minmax(0,1fr);gap:56px}}
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-1)}
@media (min-width:1024px){.toc{position:sticky;top:96px}}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:700;margin-bottom:12px}
.toc a{
  display:block;font-size:14px;color:var(--muted);padding:8px 0 8px 14px;
  border-left:2px solid #edeadf;transition:all .2s ease;
}
.toc a:hover{color:var(--brand);border-left-color:var(--brand);background:#fafcfb}

/* ---------- 分节卡片 ---------- */
.section{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-1);margin-bottom:24px;
  scroll-margin-top:96px;
}
@media (min-width:768px){.section{padding:38px}}
.section h2{
  position:relative;padding-left:16px;font-size:clamp(22px,2.5vw,28px);line-height:1.35;font-weight:700;color:var(--ink);
}
.section h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--brand);
}
.section h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.4}
.lead{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--text)}
.figure{margin-top:24px;border-radius:var(--r-img);overflow:hidden;background:var(--brand-light);aspect-ratio:16/9}
.figure img{width:100%;height:100%;object-fit:cover}
.figcap{margin-top:10px;text-align:center;font-size:13px;color:var(--muted)}
.point-list{list-style:none;margin-top:18px}
.point-list li{position:relative;padding-left:20px;font-size:15.5px;line-height:1.8;margin-bottom:12px;color:var(--text)}
.point-list li::before{content:"";position:absolute;left:0;top:.66em;width:7px;height:7px;border-radius:2px;background:var(--brand)}
.point-list li strong{color:var(--ink)}
.two-col{display:grid;grid-template-columns:1fr;gap:24px;margin-top:20px}
@media (min-width:768px){.two-col{grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}}
.step-list{list-style:none;margin-top:20px;counter-reset:st}
.step-list li{
  position:relative;padding:16px 18px 16px 58px;border:1px solid var(--line);border-radius:12px;
  background:#fcfbf7;margin-bottom:12px;font-size:15px;line-height:1.75;color:var(--text);
}
.step-list li::before{
  counter-increment:st;content:counter(st,decimal-leading-zero);
  position:absolute;left:18px;top:16px;font-size:14px;font-weight:700;color:var(--amber);letter-spacing:.06em;
}
.step-list li b{color:var(--ink)}
.mini-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:22px}
@media (min-width:640px){.mini-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
.mini-card{border:1px solid var(--line);border-radius:var(--r-card);padding:20px;background:#fff;transition:transform .2s ease,box-shadow .2s ease}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.mini-card .badge{margin-bottom:12px}
.mini-card h3{font-size:17px;font-weight:600;color:var(--ink)}
.mini-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75}
.badge{
  display:inline-block;border-radius:var(--r-badge);font-size:12px;font-weight:600;
  padding:4px 10px;letter-spacing:.02em;
}
.badge-brand{background:var(--brand-light);color:var(--brand-dark)}
.badge-amber{background:var(--amber-light);color:#8f4d16}
.badge-neutral{background:#F1EFE8;color:#5c6a65}
.note-band{
  margin-top:22px;background:var(--brand-light);border-left:3px solid var(--brand);
  border-radius:0 10px 10px 0;padding:16px 20px;font-size:14.5px;line-height:1.8;color:#26524a;
}

/* ---------- FAQ ---------- */
.faq-list{margin-top:18px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--ink);min-height:58px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{
  flex:none;width:22px;height:22px;border:1px solid var(--line);border-radius:6px;color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;line-height:1;
  transition:transform .2s ease,background .2s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary .sign{transform:rotate(45deg);background:var(--brand-light);border-color:#cfe3dd}
.faq-body{
  padding:0 0 20px 16px;margin-left:0;font-size:15px;line-height:1.85;color:var(--text);
}
.faq-item[open] .faq-body{border-left:3px solid var(--brand)}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:8px;background:var(--brand-light);border:1px solid #cfe3dd;border-radius:var(--r-card);
  padding:34px 26px;display:flex;flex-direction:column;gap:20px;align-items:flex-start;
}
@media (min-width:768px){
  .cta-band{padding:44px 40px;flex-direction:row;align-items:center;justify-content:space-between;gap:32px}
}
.cta-band h2{font-size:clamp(21px,2.3vw,26px);font-weight:700;color:var(--ink);line-height:1.35}
.cta-band p{margin-top:8px;font-size:15px;color:#41645e;line-height:1.75;max-width:620px}
.related{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.related .rel-label{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:700}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#fff;padding:60px 0 0;margin-top:80px}
@media (min-width:1024px){.site-footer{padding:72px 0 0;margin-top:104px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{font-size:20px;font-weight:700;color:#fff}
.footer-about{color:rgba(255,255,255,.72);font-size:14px;line-height:1.85;margin-top:12px;max-width:340px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-link{display:block;color:rgba(255,255,255,.72);font-size:14px;line-height:2.1;transition:color .2s ease}
.footer-link:hover{color:var(--amber);text-decoration:underline;text-underline-offset:3px}
.footer-text{color:rgba(255,255,255,.72);font-size:14px;line-height:1.95}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:46px;padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a:hover{color:var(--amber);text-decoration:underline;text-underline-offset:3px}

@media (max-width:519px){
  .page-title{font-size:28px}
  .section{padding:22px 18px}
  .btn{width:auto}
  .cta-band{padding:26px 20px}
}

/* roulang page: category2 */
:root{
  --brand:#0E5B4F;
  --brand-dark:#0A3F37;
  --brand-light:#E6F0ED;
  --amber:#C8702A;
  --amber-light:#FDF1E3;
  --ink:#33413D;
  --title:#14201D;
  --muted:#6B7A75;
  --line:#E4E0D6;
  --bg:#F7F5EF;
  --surface:#FFFFFF;
  --dark:#0C2B26;
  --footer:#0A2B26;
  --danger:#B42318;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(20,32,29,.06),0 8px 24px rgba(20,32,29,.06);
  --sh-2:0 10px 30px rgba(20,32,29,.10);
  --trans:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--trans),border-color var(--trans),background-color var(--trans);}
img{display:block;max-width:100%;height:auto;background:var(--brand-light);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
.narrow{max-width:760px;margin:0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all var(--trans);white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);transform:translateY(-1px);}
.btn-amber{background:var(--amber);color:#fff;box-shadow:var(--sh-1);}
.btn-amber:hover{background:#B0601F;transform:translateY(-1px);box-shadow:var(--sh-2);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.link-arrow::after{content:"→";transition:transform var(--trans);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;transition:border-color var(--trans),box-shadow var(--trans);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(20,32,29,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px;}
.brand{
  font-size:19px;font-weight:700;color:var(--brand);letter-spacing:.01em;
  display:inline-flex;align-items:center;gap:8px;
}
.brand::before{
  content:"";width:10px;height:10px;border-radius:3px;background:var(--amber);display:inline-block;
}
.nav-left,.nav-right{display:none;align-items:center;gap:28px;}
.nav-link{font-size:15px;font-weight:500;color:var(--ink);position:relative;padding:6px 0;}
.nav-link:hover{color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--amber);border-radius:2px;
}
.menu-toggle{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;background:#fff;
}
.menu-toggle:hover{border-color:var(--brand);}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--brand);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 20px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);
}
.mobile-panel a:hover,.mobile-panel a.is-active{background:var(--brand-light);color:var(--brand);}
.mobile-panel .panel-cta{margin:16px 20px 20px;}
.mobile-panel .btn{width:100%;}
@media (min-width:1024px){
  .header-inner{display:grid;grid-template-columns:1fr auto 1fr;}
  .nav-left{display:flex;justify-content:flex-start;}
  .nav-right{display:flex;justify-content:flex-end;}
  .menu-toggle{display:none;}
  .mobile-panel{display:none !important;}
}

/* ---------- 页头标题带 ---------- */
.page-head{
  background:linear-gradient(180deg,#EFF5F2 0%,#F7F5EF 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.04em;
  color:var(--brand);background:var(--brand-light);border-radius:var(--r-badge);
  padding:6px 12px;font-weight:600;
}
.page-head h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;color:var(--title);
  margin:20px 0 16px;
}
.page-head .lead{font-size:16px;color:var(--muted);max-width:720px;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.badge{
  font-size:12px;letter-spacing:.02em;border-radius:var(--r-badge);padding:6px 12px;font-weight:600;
  background:var(--brand-light);color:var(--brand-dark);
}
.badge-amber{background:var(--amber-light);color:#8A4A16;}
.badge-grey{background:#EFEDE6;color:var(--muted);}

/* ---------- 顶部锚点标签条 ---------- */
.toc-bar{
  position:sticky;top:72px;z-index:50;background:#fff;
  border-bottom:1px solid var(--line);
}
.toc-inner{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:thin;}
.toc-inner::-webkit-scrollbar{height:4px;}
.toc-inner::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
.toc-link{
  flex:0 0 auto;font-size:14px;font-weight:500;color:var(--muted);
  padding:8px 14px;border:1px solid var(--line);border-radius:var(--r-badge);background:#fff;white-space:nowrap;
}
.toc-link:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-light);}
.toc-link.is-active{color:var(--brand-dark);border-color:var(--brand);background:var(--brand-light);font-weight:600;}

/* ---------- 分节通用 ---------- */
.section{padding:72px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:780px;margin-bottom:40px;}
.sec-label{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.14em;
  font-weight:700;color:var(--amber);text-transform:uppercase;
}
.sec-head h2{
  position:relative;font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;color:var(--title);
  padding-left:16px;margin-top:12px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15px;}

.alt-row{display:grid;gap:36px;align-items:center;padding:44px 0;border-top:1px solid var(--line);}
.alt-row:first-of-type{border-top:0;padding-top:0;}
.alt-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);
}
.alt-body h3{font-size:21px;line-height:1.4;font-weight:600;color:var(--title);margin-bottom:12px;}
.alt-body .num{
  display:inline-block;font-size:13px;font-weight:700;color:var(--amber);
  letter-spacing:.14em;margin-bottom:10px;
}
.alt-body p{font-size:16px;line-height:1.85;color:var(--ink);margin-bottom:12px;}
.points{margin-top:16px;display:grid;gap:10px;}
.points li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--ink);}
.points li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;border-radius:2px;background:var(--brand);margin-top:9px;
}
@media (min-width:1024px){
  .alt-row{grid-template-columns:1fr 1fr;gap:56px;padding:56px 0;}
  .alt-row.reverse .alt-media{order:2;}
}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);
}
table.code-table{width:100%;border-collapse:collapse;min-width:640px;}
table.code-table th{
  background:var(--brand-light);color:var(--brand-dark);font-size:14px;font-weight:600;
  text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.code-table td{
  padding:14px 18px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);vertical-align:top;
}
table.code-table tr:last-child td{border-bottom:0;}
table.code-table tbody tr:hover{background:#FBFAF6;}
.code-chip{
  display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;background:#F1EFE8;border:1px solid var(--line);border-radius:6px;padding:2px 8px;color:var(--brand-dark);
}

/* ---------- 提示卡 ---------- */
.note-card{
  background:var(--brand-light);border-left:3px solid var(--brand);border-radius:0 var(--r-card) var(--r-card) 0;
  padding:20px 24px;font-size:15px;color:var(--brand-dark);margin-top:24px;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:62px;padding:16px 4px;font-size:17px;font-weight:600;color:var(--title);
  position:relative;transition:color var(--trans);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--brand);transition:transform var(--trans);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"–";}
.faq-item summary:hover{color:var(--brand);}
.faq-item[open] summary::before{
  content:"";position:absolute;left:-14px;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--brand);
}
.faq-answer{padding:0 16px 22px 16px;font-size:15px;line-height:1.8;color:var(--ink);}
@media (max-width:520px){
  .faq-item summary{font-size:16px;}
  .faq-item[open] summary::before{left:-10px;}
}

/* ---------- 轻量 CTA ---------- */
.cta-strip{
  background:var(--brand-light);border-radius:var(--r-img);padding:48px;
  display:grid;gap:24px;align-items:center;
}
.cta-strip h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--title);line-height:1.35;}
.cta-strip p{margin-top:12px;font-size:15px;color:#40524C;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:900px){.cta-strip{grid-template-columns:1fr auto;}}
@media (max-width:520px){.cta-strip{padding:32px 24px;}}

/* ---------- 相关分类 ---------- */
.related{padding:56px 0 72px;}
.related-title{font-size:14px;font-weight:600;color:var(--muted);letter-spacing:.04em;margin-bottom:16px;}
.related-links{display:grid;gap:12px;}
.related-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--title);box-shadow:var(--sh-1);
}
.related-links a span{font-size:13px;font-weight:500;color:var(--muted);}
.related-links a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand);color:var(--brand);}
@media (min-width:768px){.related-links{grid-template-columns:1fr 1fr;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#D7E3DF;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand{font-size:20px;font-weight:700;color:#fff;display:inline-block;margin-bottom:14px;}
.footer-brand:hover{color:var(--amber);}
.footer-about{font-size:14px;line-height:1.8;color:#A9BDB8;max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-link{display:block;font-size:14px;color:#C4D5D0;padding:5px 0;}
.footer-link:hover{color:var(--amber);text-decoration:underline;}
.footer-text{font-size:14px;color:#A9BDB8;padding:5px 0;line-height:1.7;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8FA5A0;
}
.footer-bottom a{color:#C4D5D0;}
.footer-bottom a:hover{color:var(--amber);text-decoration:underline;}