/* roulang page: index */
:root {
  --primary: #0E4B3A;
  --primary-hover: #083A2B;
  --accent: #B98A4B;
  --accent-hover: #A3793E;
  --bg-main: #F6F3EB;
  --bg-alt: #EDF3EF;
  --bg-deep: #EFEBE2;
  --bg-footer: #EFEBE2;
  --text-main: #1D1D1A;
  --text-secondary: #5C5C58;
  --text-muted: #A8A8A4;
  --border: #DFE4DC;
  --error: #B4472C;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.07);
  --shadow-float: 0 12px 32px rgba(0,0,0,0.08);
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg-main);
  color:var(--text-main);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-hover)}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:52px;padding:0 32px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;font-family:var(--font-sans);
  border:2px solid transparent;cursor:pointer;
  transition:all .2s var(--ease);text-decoration:none;line-height:1;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;min-width:180px}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(14,75,58,.2)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);min-width:180px}
.btn-outline:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-text{background:transparent;padding:0 8px;height:auto;color:var(--primary);font-size:15px;font-weight:500;display:inline-flex;align-items:center;gap:4px}
.btn-text:hover{color:var(--primary-hover)}
.btn-text i{transition:transform .2s var(--ease);font-size:12px}
.btn-text:hover i{transform:translateX(4px)}
.badge{
  display:inline-block;padding:4px 14px;border-radius:999px;
  background:var(--bg-alt);color:var(--primary);
  font-size:13px;font-weight:500;line-height:1.6;
}
/* ===== 侧边栏 App Shell ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:260px;
  background:var(--bg-main);border-right:1px solid var(--border);
  z-index:1000;display:flex;flex-direction:column;
  padding:0 0 24px;
}
.brand{
  height:96px;display:flex;align-items:center;padding:0 28px;
  border-bottom:1px solid var(--border);
}
.brand a{
  font-family:var(--font-serif);
  font-size:23px;font-weight:900;color:var(--primary);
  letter-spacing:.02em;line-height:1.3;text-decoration:none;
}
.sidebar-nav{flex:1;padding:32px 0 0}
.sidebar-nav ul li{}
.sidebar-nav ul li a{
  display:flex;align-items:center;height:46px;padding:0 28px;
  font-size:15px;font-weight:500;color:var(--text-secondary);
  position:relative;text-decoration:none;
  transition:all .2s var(--ease);
  border-left:3px solid transparent;
}
.sidebar-nav ul li a i{width:22px;font-size:15px;margin-right:12px;color:var(--text-muted);transition:color .2s var(--ease)}
.sidebar-nav ul li a:hover{color:var(--primary);background:rgba(14,75,58,.04)}
.sidebar-nav ul li.active a{
  color:var(--primary);background:var(--bg-alt);
  border-left-color:var(--primary);font-weight:600;
}
.sidebar-nav ul li.active a i{color:var(--primary)}
.sidebar-bottom{padding:0 28px 8px;border-top:1px solid var(--border);padding-top:24px}
.sidebar-bottom a{
  display:block;font-size:13px;color:var(--text-muted);
  padding:6px 0;text-decoration:none;transition:color .2s var(--ease);
}
.sidebar-bottom a:hover{color:var(--primary)}
/* ===== 移动端顶部栏与抽屉 ===== */
.mobile-header{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;
  background:var(--bg-main);border-bottom:1px solid var(--border);
  z-index:1100;align-items:center;justify-content:space-between;
  padding:0 20px;
}
.mobile-logo{font-family:var(--font-serif);font-size:20px;font-weight:900;color:var(--primary);text-decoration:none;line-height:1.2;white-space:nowrap}
.menu-toggle{
  width:40px;height:40px;border:1px solid var(--border);border-radius:8px;
  background:var(--bg-main);color:var(--primary);font-size:20px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all .2s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);background:var(--bg-alt)}
.drawer-overlay{
  display:none;position:fixed;top:0;left:0;right:0;bottom:0;
  background:rgba(0,0,0,.3);z-index:1200;
}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:300px;max-width:80%;
  background:var(--bg-main);z-index:1300;padding:24px 0;
  transform:translateX(-100%);transition:transform .3s ease;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-logo{
  font-family:var(--font-serif);font-size:22px;font-weight:900;
  color:var(--primary);padding:8px 28px 24px;border-bottom:1px solid var(--border);
  margin-bottom:16px;
}
.drawer ul li a{
  display:flex;align-items:center;height:48px;padding:0 28px;
  font-size:17px;font-weight:500;color:var(--text-main);
  text-decoration:none;transition:background .2s var(--ease);
}
.drawer ul li a:hover,.drawer ul li.active a{background:var(--bg-alt);color:var(--primary)}
.drawer ul li a i{width:24px;margin-right:12px;color:var(--text-muted);font-size:16px}
.drawer ul li.active a i{color:var(--primary)}
/* ===== 主内容 ===== */
.page-wrapper{margin-left:260px;min-height:100vh;display:flex;flex-direction:column}
.main-content{flex:1}
/* ===== Hero 区 ===== */
.hero{
  position:relative;background:var(--bg-main);
  min-height:80vh;display:flex;align-items:center;
  padding:96px 0 120px;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-80px;left:-80px;
  width:360px;height:360px;border-radius:50%;
  background:#E3EEE6;z-index:1;
}
.hero-inner{
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:60px;position:relative;z-index:2;width:100%;
}
.hero-text{flex:1;max-width:640px}
.hero-text h1{
  font-family:var(--font-serif);font-size:48px;font-weight:900;
  line-height:1.2;color:var(--text-main);letter-spacing:.01em;
  max-width:600px;margin-bottom:24px;
  opacity:0;transform:translateY(20px);
  animation:heroFadeIn .6s var(--ease) forwards;
}
@keyframes heroFadeIn{to{opacity:1;transform:translateY(0)}}
.hero-sub{
  font-size:18px;color:var(--text-secondary);line-height:1.7;
  max-width:560px;margin-bottom:40px;
  opacity:0;transform:translateY(20px);
  animation:heroFadeIn .6s var(--ease) .1s forwards;
}
.hero-cta{
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  opacity:0;transform:translateY(20px);
  animation:heroFadeIn .6s var(--ease) .2s forwards;
}
/* ===== 表单浮层卡 ===== */
.hero-form-card{
  width:360px;flex-shrink:0;background:var(--bg-main);
  border:1px solid var(--primary);border-radius:var(--radius);
  box-shadow:var(--shadow-float);padding:32px 28px;
  position:sticky;top:120px;
}
.form-card-title{
  font-family:var(--font-serif);font-size:22px;font-weight:700;
  color:var(--text-main);margin-bottom:8px;
}
.form-card-sub{font-size:13px;color:var(--text-secondary);margin-bottom:24px}
.form-group{margin-bottom:20px}
.form-group label{
  display:block;font-size:14px;font-weight:500;
  color:var(--text-main);margin-bottom:8px;
}
.form-group input,.form-group textarea{
  width:100%;height:44px;border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:0 14px;
  font-size:15px;font-family:var(--font-sans);color:var(--text-main);
  background:#fff;transition:all .2s var(--ease);
  outline:none;
}
.form-group textarea{height:100px;padding:12px 14px;resize:vertical}
.form-group input:focus,.form-group textarea:focus{
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(14,75,58,.12);
}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-submit{
  width:100%;height:48px;background:var(--primary);color:#fff;
  border:none;border-radius:var(--radius-sm);font-size:16px;font-weight:500;
  cursor:pointer;transition:all .2s var(--ease);
  font-family:var(--font-sans);
}
.form-submit:hover{background:var(--primary-hover);transform:translateY(-2px)}
.form-privacy{
  display:flex;align-items:flex-start;gap:8px;margin-top:16px;
  font-size:12px;color:var(--text-secondary);line-height:1.5;
}
.form-privacy input[type="checkbox"]{accent-color:var(--primary);margin-top:2px;width:14px;height:14px}
/* ===== 方案卡片区 ===== */
.services{padding:96px 0;background:var(--bg-alt)}
.services-heading{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:48px;flex-wrap:wrap;gap:24px;
}
.services-heading h2{
  font-family:var(--font-serif);font-size:34px;font-weight:800;
  color:var(--text-main);line-height:1.3;
}
.services-heading .section-line{width:48px;height:4px;background:var(--accent);border-radius:2px;margin-top:16px}
.service-card{
  background:var(--bg-main);border-radius:var(--radius);
  box-shadow:var(--shadow-card);overflow:hidden;
  display:flex;flex-direction:column;height:100%;
  transition:all .2s var(--ease);
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.service-card .cover{height:180px;overflow:hidden;position:relative}
.service-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.service-card:hover .cover img{transform:scale(1.03)}
.service-card-body{padding:28px 24px 20px;display:flex;flex-direction:column;flex:1}
.service-icon{
  width:48px;height:48px;border-radius:12px;
  background:var(--bg-alt);display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:22px;margin-bottom:16px;
}
.service-card h3{
  font-family:var(--font-serif);font-size:21px;font-weight:700;
  color:var(--text-main);margin-bottom:10px;line-height:1.4;
}
.service-card p{
  font-size:14px;color:var(--text-secondary);line-height:1.7;
  flex:1;margin-bottom:12px;
}
.service-card-bottom{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:12px;border-top:1px solid var(--border);
}
.service-card-bottom a{
  font-size:14px;font-weight:500;color:var(--primary);
  text-decoration:none;display:inline-flex;align-items:center;gap:4px;
  height:36px;transition:all .2s var(--ease);
}
.service-card-bottom a:hover{color:var(--primary-hover)}
.service-card-bottom a i{transition:transform .2s var(--ease);font-size:12px}
.service-card-bottom a:hover i{transform:translateX(4px)}
/* ===== 数据区 ===== */
.stats{padding:64px 0;background:var(--bg-alt);border-top:1px solid var(--border)}
.stats h2{
  font-family:var(--font-serif);font-size:32px;font-weight:800;
  color:var(--text-main);text-align:center;margin-bottom:16px;
}
.stats .section-line{width:48px;height:4px;background:var(--accent);border-radius:2px;margin:0 auto 48px}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;text-align:center;
}
.stat-item{
  padding:0 24px;position:relative;
  opacity:0;transform:translateY(12px);
  animation:statFadeIn .6s var(--ease) forwards;
}
.stat-item:nth-child(1){animation-delay:.6s}
.stat-item:nth-child(2){animation-delay:.8s}
.stat-item:nth-child(3){animation-delay:1.0s}
.stat-item:nth-child(4){animation-delay:1.2s}
.stat-item + .stat-item::before{
  content:'';position:absolute;left:0;top:10px;bottom:10px;
  width:1px;background:#D8E0D8;
}
@keyframes statFadeIn{to{opacity:1;transform:translateY(0)}}
.stat-number{
  font-family:var(--font-serif);font-size:68px;font-weight:900;
  color:var(--primary);line-height:1.1;letter-spacing:.02em;
}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:8px}
/* ===== 隐私说明 ===== */
.privacy-note{
  background:var(--bg-deep);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:32px 0;
}
.privacy-note-inner{
  display:flex;align-items:flex-start;gap:16px;max-width:900px;margin:0 auto;
}
.privacy-note .lock-icon{
  flex-shrink:0;width:48px;height:48px;border-radius:50%;
  background:var(--bg-main);display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:20px;border:1px solid var(--border);
}
.privacy-note p{
  font-size:13px;color:var(--text-secondary);line-height:1.8;margin:0;
}
.privacy-note p strong{color:var(--text-main);font-weight:600}
/* ===== CMS内容动态区 ===== */
.latest{padding:96px 0;background:var(--bg-main)}
.latest h2{
  font-family:var(--font-serif);font-size:34px;font-weight:800;
  color:var(--text-main);margin-bottom:16px;
}
.latest .section-line{width:48px;height:4px;background:var(--accent);border-radius:2px;margin-bottom:48px}
.latest-grid .cell{margin-bottom:24px}
.latest-card{
  background:var(--bg-main);border-radius:var(--radius);
  box-shadow:var(--shadow-card);border:1px solid var(--border);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:all .2s var(--ease);
}
.latest-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.latest-card .latest-cover{height:150px;overflow:hidden}
.latest-card .latest-cover img{width:100%;height:100%;object-fit:cover}
.latest-card-body{padding:20px 20px 16px;display:flex;flex-direction:column;flex:1}
.latest-card-body .badge{margin-bottom:12px}
.latest-card-body h3{
  font-family:var(--font-serif);font-size:19px;font-weight:700;
  color:var(--text-main);line-height:1.4;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:52px;
}
.latest-card-body h3 a{color:inherit;text-decoration:none}
.latest-card-body h3 a:hover{color:var(--primary)}
.latest-card-body .excerpt{
  font-size:14px;color:var(--text-secondary);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;flex:1;
}
.latest-card-footer{
  display:flex;align-items:center;gap:12px;
  padding-top:12px;border-top:1px solid var(--border);
  font-size:13px;color:var(--text-muted);
}
.latest-card-footer .read-more{
  margin-left:auto;font-size:13px;font-weight:500;color:var(--primary);
  text-decoration:none;display:inline-flex;align-items:center;gap:2px;
}
.latest-card-footer .read-more i{font-size:11px;transition:transform .2s var(--ease)}
.latest-card-footer .read-more:hover i{transform:translateX(3px)}
.empty-state{
  text-align:center;padding:80px 20px;color:var(--text-muted);
  background:var(--bg-alt);border-radius:var(--radius);border:1px dashed var(--border);
}
.empty-state i{font-size:40px;color:var(--text-muted);margin-bottom:16px;display:block}
.empty-state p{font-size:15px}
/* ===== FAQ 区 ===== */
.faq{padding:96px 0;background:var(--bg-alt)}
.faq h2{
  font-family:var(--font-serif);font-size:34px;font-weight:800;
  color:var(--text-main);margin-bottom:16px;
}
.faq .section-line{width:48px;height:4px;background:var(--accent);border-radius:2px;margin-bottom:40px}
.accordion{list-style:none}
.accordion-item{
  background:var(--bg-main);border-radius:var(--radius);
  margin-bottom:16px;box-shadow:var(--shadow-card);overflow:hidden;
  border:1px solid var(--border);
}
.accordion-item .accordion-title{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;font-size:16px;font-weight:700;
  color:var(--text-main);text-decoration:none;cursor:pointer;
  transition:background .2s var(--ease);
}
.accordion-item .accordion-title:hover{background:var(--bg-alt)}
.accordion-item .accordion-title i{
  font-size:14px;color:var(--primary);transition:transform .2s var(--ease);
}
.accordion-item.is-active .accordion-title i{transform:rotate(180deg)}
.accordion-content{
  display:none;padding:0 24px 24px;font-size:15px;
  color:var(--text-secondary);line-height:1.8;
}
.accordion-item.is-active .accordion-content{display:block}
/* ===== CTA 区 ===== */
.cta{
  padding:96px 0;background:var(--bg-main);position:relative;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta::before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background:rgba(246,243,235,.92);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.cta-inner h2{
  font-family:var(--font-serif);font-size:32px;font-weight:800;
  color:var(--text-main);margin-bottom:16px;
}
.cta-inner p{
  font-size:16px;color:var(--text-secondary);margin-bottom:32px;
  line-height:1.8;
}
.cta-inner .btn-outline{min-width:200px}
/* ===== 页脚 ===== */
.footer{
  background:var(--bg-footer);border-top:1px solid var(--border);
  padding:64px 0 0;margin-top:40px;
}
.footer-grid{
  display:grid;grid-template-columns:4fr 4fr 4fr;gap:48px;
  padding-bottom:48px;border-bottom:1px solid var(--border);
}
.footer-brand .brand-name{
  font-family:var(--font-serif);font-size:22px;font-weight:900;
  color:var(--primary);margin-bottom:12px;display:block;
}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin:0}
.footer-col h4{
  font-size:15px;font-weight:700;color:var(--text-main);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{
  font-size:14px;color:var(--text-secondary);text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-col ul li a:hover{color:var(--primary)}
.footer-contact{font-size:14px;color:var(--text-secondary);line-height:2}
.footer-bottom{
  padding:20px 0;text-align:center;font-size:13px;
  color:var(--text-muted);
}
/* ===== 响应式 ===== */
@media (max-width:1200px){
  .hero-form-card{width:320px}
  .hero-inner{gap:40px}
}
@media (max-width:1024px){
  .sidebar{display:none}
  .mobile-header{display:flex}
  .page-wrapper{margin-left:0;padding-top:60px}
  .hero{min-height:auto;padding:80px 0}
  .hero-inner{flex-direction:column;gap:48px}
  .hero-text h1{font-size:36px}
  .hero-sub{font-size:16px}
  .hero-form-card{width:100%;position:static;margin-top:0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .stat-item:nth-child(3)::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .hero{padding:64px 0}
  .hero-text h1{font-size:32px}
  .hero-sub{font-size:15px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .services,.stats,.latest,.faq,.cta{padding:56px 0}
  .services-heading h2,.latest h2,.faq h2{font-size:26px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat-number{font-size:48px}
  .footer-grid{grid-template-columns:1fr}
  .privacy-note-inner{flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .stats-grid{grid-template-columns:1fr}
  .stat-item + .stat-item::before{display:none}
  .form-card{padding:24px 18px}
  .latest-cover{height:120px}
}

/* roulang page: article */
:root{
  --primary:#0E4B3A;
  --primary-hover:#083A2B;
  --accent:#B98A4B;
  --accent-hover:#A3793E;
  --bg:#F6F3EB;
  --bg-alt:#EDF3EF;
  --bg-footer:#EFEBE2;
  --text:#1D1D1A;
  --text-sec:#5C5C58;
  --text-mut:#A8A8A4;
  --border:#DFE4DC;
  --radius:10px;
  --radius-btn:6px;
  --shadow-card:0 2px 8px rgba(0,0,0,0.04);
  --shadow-hover:0 8px 24px rgba(0,0,0,0.07);
  --shadow-float:0 12px 32px rgba(0,0,0,0.08);
  --transition:0.2s cubic-bezier(0.2,0,0,1);
  --font-serif:'Noto Serif SC','Source Han Serif SC',serif;
  --font-sans:'Noto Sans SC','Source Han Sans SC',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:var(--font-sans)}
ul,ol{list-style-position:inside}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.container-narrow{max-width:880px;margin:0 auto;padding:0 32px;width:100%}

/* 侧边导航 */
.sidebar{
  position:fixed;left:0;top:0;width:250px;height:100vh;
  background:var(--bg);
  border-right:1px solid var(--border);
  z-index:1000;
  display:flex;flex-direction:column;
  padding:0;
  transition:transform 0.3s ease;
}
.sidebar-brand{
  padding:28px 24px 20px;
  border-bottom:1px solid var(--border);
}
.sidebar-brand .brand-link{display:flex;flex-direction:column;gap:4px}
.brand-name{
  font-family:var(--font-serif);
  font-size:24px;
  font-weight:900;
  color:var(--primary);
  letter-spacing:0.01em;
  line-height:1.25;
}
.brand-tag{
  font-size:13px;
  color:var(--text-mut);
  font-weight:400;
}
.sidebar-nav{flex:1;padding:20px 0 0;overflow-y:auto}
.sidebar-nav ul{list-style:none;padding:0;margin:0}
.sidebar-nav ul li{margin:0}
.sidebar-nav ul li a{
  display:flex;align-items:center;gap:12px;
  height:46px;padding:0 20px;
  font-size:15px;font-weight:500;
  color:var(--text-sec);
  border-left:3px solid transparent;
  transition:background var(--transition),color var(--transition),border-color var(--transition);
  line-height:1;
}
.sidebar-nav ul li a i{
  width:20px;text-align:center;font-size:15px;
  color:var(--text-mut);
  transition:color var(--transition);
}
.sidebar-nav ul li a:hover{
  background:rgba(14,75,58,0.05);
  color:var(--primary);
}
.sidebar-nav ul li a:hover i{color:var(--primary)}
.sidebar-nav ul li.active a{
  background:rgba(14,75,58,0.07);
  color:var(--primary);
  border-left-color:var(--primary);
}
.sidebar-nav ul li.active a i{color:var(--primary)}
.sidebar-foot{
  padding:24px 20px;
  border-top:1px solid var(--border);
}
.sidebar-foot .support-card{
  background:var(--bg-alt);
  border-radius:var(--radius);
  padding:16px;
  text-align:left;
}
.sidebar-foot .support-card i{
  font-size:20px;color:var(--primary);margin-bottom:8px;
}
.sidebar-foot .support-card p{
  font-size:13px;color:var(--text-sec);margin-bottom:4px;line-height:1.5;
}
.sidebar-foot .support-card a{
  font-size:13px;color:var(--primary);word-break:break-all;
}

/* 移动端顶栏 */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  background:var(--bg);
  border-bottom:1px solid var(--border);
  z-index:1100;
  align-items:center;justify-content:space-between;
  padding:0 20px;
}
.mobile-bar .mobile-brand{
  font-family:var(--font-serif);
  font-size:20px;font-weight:900;color:var(--primary);
}
.menu-toggle{
  width:40px;height:40px;
  background:var(--bg-alt);
  border:1px solid var(--border);
  border-radius:8px;
  color:var(--primary);
  font-size:18px;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background var(--transition),border-color var(--transition);
}
.menu-toggle:hover{background:#e2ebe4;border-color:var(--primary)}
.sidebar-overlay{
  display:none;
  position:fixed;top:0;left:0;right:0;bottom:0;
  background:rgba(0,0,0,0.3);
  z-index:1050;
}
.sidebar-overlay.show{display:block}
.sidebar-close{
  display:none;
  position:absolute;top:14px;right:14px;
  width:36px;height:36px;
  background:var(--bg-alt);
  border:none;border-radius:8px;
  color:var(--text-sec);
  font-size:16px;
  cursor:pointer;
  align-items:center;justify-content:center;
  z-index:2;
}
.sidebar-close:hover{color:var(--primary)}

/* 主内容区 */
.main-content{
  margin-left:250px;
  min-height:100vh;
  display:flex;flex-direction:column;
}

/* 文章区 */
.article-main{
  flex:1;
  padding:56px 0 0;
}
.article-head{
  padding:0 0 32px;
  border-bottom:1px solid var(--border);
  margin-bottom:40px;
}
.article-category{
  margin-bottom:16px;
}
.badge{
  display:inline-block;
  background:var(--bg-alt);
  color:var(--primary);
  font-size:14px;
  font-weight:500;
  padding:4px 14px;
  border-radius:999px;
  line-height:1.5;
}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:6px;
  margin-bottom:20px;
  font-size:14px;
  color:var(--text-mut);
}
.breadcrumb a{color:var(--text-sec)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-mut);margin:0 2px}
.breadcrumb .current{
  color:var(--text-sec);
  max-width:280px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.article-title{
  font-family:var(--font-serif);
  font-size:36px;
  font-weight:900;
  line-height:1.3;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:0.01em;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:16px;
  font-size:13px;
  color:var(--text-mut);
  margin-bottom:24px;
}
.article-meta .sep{color:var(--border)}
.article-desc{
  font-size:16px;
  color:var(--text-sec);
  line-height:1.75;
  max-width:720px;
}

/* 正文 */
.article-content{
  max-width:840px;
  margin:0 auto;
  padding:0 0 56px;
}
.article-content p{
  font-size:17px;
  line-height:1.9;
  letter-spacing:0.01em;
  color:var(--text);
  margin-bottom:24px;
}
.article-content h2{
  font-family:var(--font-serif);
  font-size:26px;
  font-weight:800;
  color:var(--text);
  margin:48px 0 16px;
  line-height:1.4;
}
.article-content h3{
  font-family:var(--font-serif);
  font-size:22px;
  font-weight:700;
  color:var(--text);
  margin:40px 0 14px;
  line-height:1.4;
}
.article-content h4{
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin:32px 0 12px;
}
.article-content ul,
.article-content ol{
  margin:0 0 24px;
  padding-left:1.25em;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
}
.article-content li{
  margin-bottom:8px;
}
.article-content blockquote{
  border-left:3px solid var(--primary);
  background:var(--bg-alt);
  padding:20px 24px;
  margin:32px 0;
  border-radius:0 var(--radius) var(--radius) 0;
  font-size:16px;
  color:var(--text-sec);
  line-height:1.8;
}
.article-content img{
  border-radius:var(--radius);
  width:auto;
  max-width:100%;
  margin:32px auto;
}
.article-content figure{
  margin:32px 0;
}
.article-content figure img{
  margin-bottom:12px;
}
.article-content figcaption{
  font-size:13px;
  color:var(--text-mut);
  text-align:center;
}
.article-content a{
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:3px;
}
.article-content a:hover{color:var(--primary-hover)}
.article-content strong{font-weight:700;color:var(--text)}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:32px 0;
  font-size:15px;
}
.article-content table th,
.article-content table td{
  border:1px solid var(--border);
  padding:12px 16px;
  text-align:left;
}
.article-content table th{
  background:var(--bg-alt);
  font-weight:700;
  color:var(--text);
}
.article-content table tr:nth-child(even){
  background:rgba(237,243,239,0.4);
}
.article-content iframe{
  max-width:100%;
  border-radius:var(--radius);
  margin:32px 0;
}
.article-content pre{
  background:#1D1D1A;
  color:#e8e6dd;
  padding:20px;
  border-radius:var(--radius);
  font-size:14px;
  line-height:1.6;
  overflow-x:auto;
  margin:32px 0;
}
.article-content code{
  font-family:monospace;
  font-size:14px;
  background:rgba(14,75,58,0.06);
  padding:2px 6px;
  border-radius:4px;
}
.article-content pre code{
  background:transparent;
  padding:0;
  color:inherit;
}

/* 相关推荐 */
.related-section{
  background:var(--bg-alt);
  padding:56px 0;
  border-top:1px solid var(--border);
}
.related-title-row{
  margin-bottom:32px;
}
.related-title-row h3{
  font-family:var(--font-serif);
  font-size:26px;
  font-weight:800;
  color:var(--text);
  position:relative;
  padding-bottom:12px;
}
.related-title-row h3::after{
  content:'';
  position:absolute;
  left:0;bottom:0;
  width:48px;height:4px;
  background:var(--accent);
  border-radius:2px;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:40px;
}
.related-card{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  height:96px;
  padding:12px;
  box-shadow:var(--shadow-card);
  transition:box-shadow var(--transition),transform var(--transition);
}
.related-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.related-card img{
  width:96px;height:72px;
  object-fit:cover;
  border-radius:6px;
  flex-shrink:0;
}
.related-card-info{
  display:flex;flex-direction:column;
  justify-content:center;
  gap:4px;
  overflow:hidden;
}
.related-card-info h4{
  font-size:15px;
  font-weight:700;
  color:var(--text);
  line-height:1.4;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
}
.related-card-info .date{
  font-size:13px;
  color:var(--text-mut);
  white-space:nowrap;
}
.back-to-category{
  display:flex;
  justify-content:center;
}

/* 按钮 */
.btn-primary,
.btn-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  font-size:15px;
  font-weight:500;
  border-radius:var(--radius-btn);
  cursor:pointer;
  transition:all var(--transition);
  border:1px solid transparent;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--primary-hover);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.btn-outline{
  background:transparent;
  border-color:var(--primary);
  color:var(--primary);
}
.btn-outline:hover{
  background:var(--primary);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}

/* 空状态 */
.notfound-box{
  max-width:600px;
  margin:80px auto;
  text-align:center;
  padding:60px 40px;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
}
.notfound-box i{
  font-size:48px;
  color:var(--text-mut);
  margin-bottom:20px;
  display:block;
}
.notfound-box p{
  font-size:18px;
  color:var(--text-sec);
  margin-bottom:24px;
}

/* 页脚 */
.footer{
  background:var(--bg-footer);
  border-top:1px solid var(--border);
  padding:56px 0 0;
  margin-top:40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 4fr 4fr;
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .brand-name{
  font-family:var(--font-serif);
  font-size:22px;
  font-weight:900;
  color:var(--primary);
  display:block;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-sec);
  line-height:1.7;
  margin-top:12px;
}
.footer-col h4{
  font-size:16px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{
  list-style:none;
  padding:0;margin:0;
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-sec);
  transition:color var(--transition);
}
.footer-col ul li a:hover{
  color:var(--primary);
}
.footer-contact p{
  font-size:14px;
  color:var(--text-sec);
  margin-bottom:8px;
  line-height:1.6;
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:24px 0;
  text-align:center;
}
.footer-bottom p{
  font-size:13px;
  color:var(--text-mut);
  margin:0;
}

/* 响应式 */
@media (max-width:1023.98px){
  .sidebar{
    transform:translateX(-100%);
    width:300px;
  }
  .sidebar.open{
    transform:translateX(0);
    box-shadow:var(--shadow-float);
  }
  .sidebar-close{
    display:flex;
  }
  .main-content{
    margin-left:0;
    padding-top:60px;
  }
  .mobile-bar{
    display:flex;
  }
  .article-main{
    padding-top:40px;
  }
  .article-title{
    font-size:32px;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:767.98px){
  .container{
    padding:0 20px;
  }
  .container-narrow{
    padding:0 20px;
  }
  .related-grid{
    grid-template-columns:1fr;
  }
  .related-card{
    width:100%;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
    padding-bottom:32px;
  }
  .article-title{
    font-size:28px;
  }
  .article-meta{
    gap:10px;
    font-size:12px;
  }
  .article-content p{
    font-size:15px;
    line-height:1.8;
  }
  .article-content h2{
    font-size:24px;
  }
  .article-content h3{
    font-size:20px;
  }
  .breadcrumb .current{
    max-width:160px;
  }
}
@media (max-width:520px){
  .container{
    padding:0 16px;
  }
  .article-main{
    padding-top:32px;
  }
  .article-title{
    font-size:26px;
  }
  .btn-primary,.btn-outline{
    width:100%;
  }
  .related-card{
    height:auto;
    padding:10px;
  }
  .related-card img{
    width:80px;height:64px;
  }
  .sidebar{
    width:280px;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #0E4B3A;
      --primary-hover: #083A2B;
      --accent: #B98A4B;
      --accent-hover: #A3793E;
      --bg-page: #F6F3EB;
      --bg-alt: #EDF3EF;
      --bg-footer: #EFEBE2;
      --text-main: #1D1D1A;
      --text-secondary: #5C5C58;
      --text-weak: #A8A8A4;
      --border: #DFE4DC;
      --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.07);
      --shadow-float: 0 12px 32px rgba(0, 0, 0, 0.08);
      --radius-lg: 10px;
      --radius-sm: 6px;
      --transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
    }

    /* ===== Base ===== */
    *, *::before, *::after {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background: var(--bg-page);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      font-family: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
      margin: 0;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
    }
    p { margin: 0; }
    a { text-decoration: none; color: var(--primary); transition: var(--transition); }
    a:hover { color: var(--primary-hover); }
    img { max-width: 100%; display: block; }
    ul { margin: 0; padding: 0; list-style: none; }
    input, textarea, button { font-family: inherit; }
    .grid-container.wide {
      max-width: 1200px;
      padding: 0 40px;
    }

    /* ===== 移动端顶栏 ===== */
    .topbar-mobile {
      display: none;
      position: fixed;
      top: 0; left: 0; right: 0;
      height: 60px;
      background: var(--bg-page);
      border-bottom: 1px solid var(--border);
      z-index: 1200;
      padding: 0 20px;
    }
    .topbar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }
    .topbar-brand {
      font-family: 'Noto Serif SC', serif;
      font-size: 20px;
      font-weight: 900;
      color: var(--primary);
      white-space: nowrap;
    }
    .hamburger {
      width: 40px;
      height: 40px;
      border: 1px solid var(--border);
      border-radius: 8px;
      background: transparent;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      cursor: pointer;
      transition: var(--transition);
    }
    .hamburger:hover { border-color: var(--primary); }
    .hamburger span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    /* ===== 移动端遮罩 ===== */
    .mobile-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.3);
      z-index: 1090;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    .mobile-overlay.show {
      opacity: 1;
      visibility: visible;
    }

    /* ===== 侧边栏 ===== */
    .sidebar {
      width: 250px;
      background: #F6F3EB;
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      position: fixed;
      top: 0; bottom: 0; left: 0;
      z-index: 1100;
      padding: 24px 16px;
    }
    .sidebar-brand {
      height: 56px;
      display: flex;
      align-items: center;
      padding: 0 8px;
    }
    .brand-name {
      font-family: 'Noto Serif SC', serif;
      font-size: 22px;
      font-weight: 900;
      color: var(--primary);
      white-space: nowrap;
    }
    .sidebar-nav {
      margin-top: 28px;
      flex: 1;
    }
    .sidebar-nav ul li a {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 46px;
      padding: 0 20px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: 8px;
      transition: var(--transition);
    }
    .sidebar-nav ul li a i {
      width: 20px;
      text-align: center;
      font-size: 14px;
      color: var(--text-weak);
      transition: var(--transition);
    }
    .sidebar-nav ul li a:hover {
      background: rgba(14, 75, 58, 0.06);
      color: var(--primary);
    }
    .sidebar-nav ul li a:hover i { color: var(--primary); }
    .sidebar-nav ul li.active a {
      background: var(--bg-alt);
      color: var(--primary);
      font-weight: 700;
      box-shadow: inset 3px 0 0 var(--primary);
    }
    .sidebar-nav ul li.active a i { color: var(--primary); }
    .sidebar-foot {
      padding: 20px 8px 0;
      border-top: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .sidebar-foot a {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: var(--text-secondary);
      padding: 8px;
      border-radius: 6px;
      transition: var(--transition);
    }
    .sidebar-foot a:hover { color: var(--primary); background: rgba(14, 75, 58, 0.04); }
    .sidebar-foot a i { width: 16px; color: var(--text-weak); }

    /* ===== 主内容区 ===== */
    .main-wrap {
      margin-left: 250px;
      min-width: 0;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }
    .main-content {
      flex: 1;
      padding: 48px 0 80px;
    }

    /* ===== 面包屑 ===== */
    .breadcrumbs {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 24px;
      flex-wrap: wrap;
    }
    .breadcrumbs a { color: var(--text-secondary); }
    .breadcrumbs a:hover { color: var(--primary); }
    .breadcrumbs .separator { color: var(--text-weak); }
    .breadcrumbs .current { color: var(--text-secondary); font-weight: 500; }

    /* ===== 标题带 ===== */
    .page-header {
      margin-bottom: 64px;
      position: relative;
    }
    .header-title-row {
      display: flex;
      align-items: flex-start;
      gap: 20px;
    }
    .header-title-row h1 {
      font-size: 36px;
      line-height: 1.25;
      font-weight: 900;
      letter-spacing: 0.01em;
      flex: 1;
    }
    .deco-corners {
      width: 20px;
      height: 20px;
      border-top: 4px solid var(--accent);
      border-right: 4px solid var(--accent);
      flex-shrink: 0;
      margin-top: 8px;
      border-radius: 0 4px 0 0;
    }
    .lead-text {
      margin-top: 20px;
      max-width: 660px;
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-secondary);
    }

    /* ===== 通用板块 ===== */
    .section {
      margin-bottom: 80px;
    }
    .section-head {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }
    .section-head h2 {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      white-space: nowrap;
    }
    .section-line {
      width: 48px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
      flex-shrink: 0;
    }

    /* ===== 核心服务卡片 ===== */
    .service-grid {
      display: flex;
      flex-wrap: wrap;
      margin: 0 -12px;
    }
    .service-col {
      padding: 0 12px;
      margin-bottom: 24px;
      display: flex;
    }
    .service-col > .feature-card {
      width: 100%;
    }
    @media (min-width: 640px) {
      .service-col.large { width: 50%; }
      .service-col.middle { width: 50%; }
      .service-col.small { width: 100%; }
    }
    @media (min-width: 1024px) {
      .service-col.large { width: 41.6667%; }
      .service-col.middle { width: 33.3333%; }
      .service-col.small { width: 25%; }
    }
    .feature-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
      box-shadow: var(--shadow-card);
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .card-img {
      overflow: hidden;
      position: relative;
    }
    .card-img img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1);
    }
    .feature-card:hover .card-img img {
      transform: scale(1.04);
    }
    .card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0, 0, 0, 0) 55%, rgba(14, 75, 58, 0.18) 100%);
      pointer-events: none;
    }
    .card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      height: 26px;
      padding: 0 12px;
      font-size: 13px;
      font-weight: 500;
      color: var(--primary);
      background: var(--bg-alt);
      border-radius: 999px;
      letter-spacing: 0.02em;
      margin-bottom: 14px;
      align-self: flex-start;
    }
    .card-body h3 {
      font-size: 21px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .card-body p {
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-secondary);
      margin-bottom: 20px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      height: 36px;
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .card-link i {
      font-size: 12px;
      transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1);
    }
    .card-link:hover {
      color: var(--primary-hover);
      background: rgba(14, 75, 58, 0.05);
      padding-left: 8px;
    }
    .card-link:hover i {
      transform: translateX(4px);
    }

    /* ===== 列表式结构 ===== */
    .step-list {
      border-top: 1px solid var(--border);
    }
    .step-item {
      display: flex;
      gap: 24px;
      padding: 26px 0;
      border-bottom: 1px solid var(--border);
      align-items: flex-start;
      transition: background 0.2s ease;
    }
    .step-item:hover {
      background: rgba(237, 243, 239, 0.4);
    }
    .step-num {
      font-family: 'Noto Serif SC', serif;
      font-size: 28px;
      font-weight: 900;
      color: var(--accent);
      width: 56px;
      flex-shrink: 0;
      line-height: 1.2;
      letter-spacing: 0.02em;
    }
    .step-content h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .step-content p {
      font-size: 15px;
      line-height: 1.75;
      color: var(--text-secondary);
      max-width: 640px;
    }

    /* ===== FAQ ===== */
    .faq-section .section-head {
      margin-bottom: 24px;
    }
    .accordion {
      background: transparent;
      border: none;
    }
    .accordion-item {
      background: transparent;
      border-bottom: 1px solid var(--border);
    }
    .accordion-item:first-child {
      border-top: 1px solid var(--border);
    }
    .accordion-title {
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 700;
      line-height: 1.5;
      padding: 18px 44px 18px 0;
      position: relative;
      transition: var(--transition);
      display: block;
      width: 100%;
      text-align: left;
    }
    .accordion-title:hover {
      color: var(--primary);
      background: rgba(14, 75, 58, 0.03);
      padding-left: 8px;
    }
    .accordion-title::before {
      content: '';
    }
    .accordion-title::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 13px;
      color: var(--primary);
      position: absolute;
      right: 6px;
      top: 50%;
      transform: translateY(-50%);
      transition: transform 0.3s ease;
      width: 28px;
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--bg-alt);
    }
    .accordion-item.is-active > .accordion-title::after {
      transform: translateY(-50%) rotate(180deg);
    }
    .accordion-content {
      border: none;
      background: transparent;
      color: var(--text-secondary);
      font-size: 14px;
      line-height: 1.8;
      padding: 0 20px 20px 0;
    }
    .accordion-content p {
      max-width: 720px;
    }

    /* ===== 弱 CTA ===== */
    .cta-weak {
      background: var(--bg-alt);
      border-radius: var(--radius-lg);
      padding: 40px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-card);
    }
    .cta-weak .cta-text {
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-main);
      font-weight: 500;
      flex: 1;
      min-width: 260px;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      padding: 0 28px;
      background: transparent;
      color: var(--primary);
      border: 1px solid var(--primary);
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      white-space: nowrap;
      transition: var(--transition);
    }
    .btn-outline i { font-size: 13px; }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(14, 75, 58, 0.2);
    }

    /* ===== 页脚 ===== */
    .footer {
      background: var(--bg-footer);
      border-top: 1px solid var(--border);
      padding: 56px 0 24px;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 40px;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 40px;
    }
    .footer-brand .brand-name {
      font-size: 20px;
      font-weight: 900;
      color: var(--primary);
      font-family: 'Noto Serif SC', serif;
      display: block;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-secondary);
      max-width: 280px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col a {
      font-size: 14px;
      color: var(--text-secondary);
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: var(--primary);
      padding-left: 4px;
    }
    .footer-contact p {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 8px;
      line-height: 1.6;
    }
    .footer-bottom {
      max-width: 1200px;
      margin: 48px auto 0;
      padding: 20px 40px 0;
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom p {
      font-size: 13px;
      color: var(--text-weak);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1023px) {
      .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 280px;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.06);
      }
      .sidebar.open {
        transform: translateX(0);
      }
      .main-wrap {
        margin-left: 0;
      }
      .topbar-mobile {
        display: block;
      }
      .main-content {
        padding-top: 80px;
      }
      .grid-container.wide {
        padding: 0 24px;
      }
      .footer-grid {
        padding: 0 24px;
      }
      .footer-bottom {
        padding-left: 24px;
        padding-right: 24px;
      }
    }
    @media (max-width: 767px) {
      .header-title-row h1 {
        font-size: 28px;
      }
      .lead-text {
        font-size: 15px;
      }
      .section {
        margin-bottom: 56px;
      }
      .section-head h2 {
        font-size: 24px;
      }
      .service-col.large,
      .service-col.middle,
      .service-col.small {
        width: 100%;
      }
      .step-item {
        flex-direction: row;
        gap: 16px;
      }
      .step-num {
        width: 42px;
        font-size: 24px;
      }
      .cta-weak {
        padding: 28px 24px;
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-bottom {
        flex-direction: column;
      }
    }
    @media (max-width: 520px) {
      .grid-container.wide {
        padding: 0 18px;
      }
      .header-title-row h1 {
        font-size: 25px;
      }
      .deco-corners {
        width: 16px;
        height: 16px;
        border-top-width: 3px;
        border-right-width: 3px;
      }
      .card-body {
        padding: 20px;
      }
      .step-item {
        gap: 12px;
      }
      .step-content h3 {
        font-size: 17px;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #0E4B3A;
      --primary-hover: #083A2B;
      --accent: #B98A4B;
      --accent-hover: #A3793E;
      --bg: #F6F3EB;
      --bg-alt: #EDF3EF;
      --bg-footer: #EFEBE2;
      --text: #1D1D1A;
      --text-secondary: #5C5C58;
      --text-muted: #A8A8A4;
      --border: #DFE4DC;
      --radius: 10px;
      --radius-sm: 6px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.07);
      --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.08);
      --transition: 0.2s cubic-bezier(0.2, 0, 0, 1);
      --sidebar-w: 252px;
      --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
      --font-sans: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background: var(--bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.75;
      display: flex;
      min-height: 100vh;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color var(--transition);
    }
    a:hover {
      color: var(--primary-hover);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    h1,
    h2,
    h3,
    h4 {
      font-family: var(--font-serif);
      line-height: 1.3;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 40px;
      padding-right: 40px;
    }
    .section-head {
      margin-bottom: 48px;
    }
    .section-head h2 {
      font-size: 30px;
      font-weight: 800;
      color: var(--text);
      letter-spacing: 0.02em;
    }
    .section-head .section-line {
      display: block;
      width: 48px;
      height: 4px;
      background: var(--accent);
      border-radius: 2px;
      margin-top: 12px;
    }

    /* ===== 侧边栏 ===== */
    .app-sidebar {
      width: var(--sidebar-w);
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      background: var(--bg);
      border-right: 1px solid var(--border);
      z-index: 120;
      display: flex;
      flex-direction: column;
      padding: 0;
    }
    .sidebar-brand {
      height: 80px;
      display: flex;
      align-items: center;
      padding: 0 28px;
      border-bottom: 1px solid var(--border);
      flex-shrink: 0;
    }
    .sidebar-brand .brand-name {
      font-family: var(--font-serif);
      font-size: 22px;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: 0.02em;
      white-space: nowrap;
    }
    .sidebar-nav {
      flex: 1;
      padding: 24px 0;
      overflow-y: auto;
    }
    .sidebar-nav ul {
      list-style: none;
    }
    .sidebar-nav li {
      margin-bottom: 2px;
    }
    .sidebar-nav li a {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 46px;
      padding: 0 28px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      border-left: 3px solid transparent;
      transition: background var(--transition), color var(--transition), border-color var(--transition);
    }
    .sidebar-nav li a i {
      width: 20px;
      text-align: center;
      font-size: 16px;
      color: var(--text-muted);
      transition: color var(--transition);
    }
    .sidebar-nav li a:hover {
      color: var(--primary);
      background: rgba(237, 243, 239, 0.6);
    }
    .sidebar-nav li a:hover i {
      color: var(--primary);
    }
    .sidebar-nav li.active a {
      color: var(--primary);
      background: var(--bg-alt);
      border-left-color: var(--primary);
      font-weight: 700;
    }
    .sidebar-nav li.active a i {
      color: var(--primary);
    }
    .sidebar-foot {
      padding: 24px 28px 28px;
      border-top: 1px solid var(--border);
      flex-shrink: 0;
    }
    .sidebar-foot a {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      padding: 6px 0;
      transition: color var(--transition);
    }
    .sidebar-foot a:hover {
      color: var(--primary);
    }

    /* ===== 主内容区 ===== */
    .app-main {
      margin-left: var(--sidebar-w);
      flex: 1;
      min-width: 0;
      display: flex;
      flex-direction: column;
    }

    /* ===== 移动端头部 ===== */
    .mobile-header {
      display: none;
      height: 60px;
      background: var(--bg);
      border-bottom: 1px solid var(--border);
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .mobile-header .brand-name {
      font-family: var(--font-serif);
      font-size: 20px;
      font-weight: 900;
      color: var(--primary);
      white-space: nowrap;
    }
    .hamburger-btn {
      width: 40px;
      height: 40px;
      background: transparent;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 18px;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
    }
    .hamburger-btn:hover {
      background: var(--bg-alt);
    }

    /* ===== 抽屉 ===== */
    .drawer-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.3);
      z-index: 149;
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .drawer-overlay.visible {
      display: block;
      opacity: 1;
    }
    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 280px;
      background: var(--bg);
      z-index: 160;
      transform: translateX(-100%);
      transition: transform 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .mobile-drawer.open {
      transform: translateX(0);
    }
    .drawer-brand {
      padding: 24px 24px 20px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 16px;
    }
    .drawer-brand .brand-name {
      font-family: var(--font-serif);
      font-size: 20px;
      font-weight: 900;
      color: var(--primary);
    }
    .drawer-nav {
      flex: 1;
      overflow-y: auto;
    }
    .drawer-nav ul {
      list-style: none;
    }
    .drawer-nav li a {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 48px;
      padding: 0 24px;
      font-size: 17px;
      color: var(--text-secondary);
      transition: background var(--transition), color var(--transition);
    }
    .drawer-nav li a i {
      width: 20px;
      color: var(--text-muted);
    }
    .drawer-nav li.active a {
      color: var(--primary);
      font-weight: 700;
      background: var(--bg-alt);
    }
    .drawer-nav li.active a i {
      color: var(--primary);
    }

    /* ===== 页面标题区 ===== */
    .page-head {
      background: var(--bg);
      padding: 72px 0 56px;
      border-bottom: 1px solid var(--border);
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 32px;
    }
    .breadcrumb a {
      color: var(--text-secondary);
      transition: color var(--transition);
    }
    .breadcrumb a:hover {
      color: var(--primary);
    }
    .breadcrumb .sep {
      font-size: 12px;
      color: var(--text-muted);
    }
    .breadcrumb .current {
      color: var(--primary);
      font-weight: 500;
    }
    .head-content {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 40px;
    }
    .head-text {
      max-width: 720px;
    }
    .head-text h1 {
      font-size: 38px;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: 0.02em;
      line-height: 1.25;
      margin-bottom: 20px;
    }
    .head-text p {
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 620px;
    }
    .head-decor {
      width: 120px;
      height: 4px;
      background: var(--accent);
      border-radius: 2px;
      flex-shrink: 0;
      margin-top: 36px;
    }

    /* ===== 核心服务模块 ===== */
    .module-section {
      background: var(--bg);
      padding: 96px 0;
    }
    .module-section .section-head h2 {
      color: var(--text);
    }
    .service-card {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      transition: box-shadow var(--transition), transform var(--transition);
    }
    .service-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .service-card .card-image {
      overflow: hidden;
      border-radius: var(--radius) var(--radius) 0 0;
    }
    .service-card .card-image img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .service-card:hover .card-image img {
      transform: scale(1.03);
    }
    .service-card .card-body {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .service-card .card-icon {
      font-size: 32px;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1;
    }
    .service-card h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .service-card p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.75;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 15px;
      font-weight: 500;
      color: var(--primary);
      margin-top: 20px;
      padding: 12px 0;
      transition: gap var(--transition), color var(--transition);
    }
    .card-link i {
      font-size: 13px;
      transition: transform var(--transition);
    }
    .card-link:hover {
      color: var(--primary-hover);
      gap: 10px;
    }
    .card-link:hover i {
      transform: translateX(2px);
    }

    /* ===== 功能亮点 ===== */
    .feature-section {
      background: var(--bg-alt);
      padding: 96px 0;
    }
    .feature-list {
      display: flex;
      flex-direction: column;
    }
    .feature-row {
      display: grid;
      grid-template-columns: 200px 1fr;
      gap: 32px;
      padding: 28px 0;
      border-bottom: 1px solid var(--border);
    }
    .feature-row:first-child {
      padding-top: 0;
    }
    .feature-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .feature-row .feature-title {
      font-family: var(--font-serif);
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.5;
    }
    .feature-row .feature-desc {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .feature-side {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .feature-image {
      background: var(--bg);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), transform var(--transition);
    }
    .feature-image:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .feature-image img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .feature-image .image-caption {
      padding: 16px 20px;
      font-size: 13px;
      color: var(--text-muted);
      text-align: center;
      background: var(--bg);
      border-top: 1px solid var(--border);
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg);
      padding: 96px 0;
    }
    .faq-wrap {
      max-width: 860px;
    }
    .accordion {
      background: transparent;
      border: none;
      list-style: none;
    }
    .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid var(--border);
      margin-bottom: 0;
    }
    .accordion-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text) !important;
      background: transparent !important;
      border: none !important;
      padding: 20px 48px 20px 20px;
      position: relative;
      line-height: 1.6;
      transition: background var(--transition), color var(--transition);
      font-family: var(--font-sans);
    }
    .accordion-title:hover,
    .accordion-title:focus {
      background: rgba(237, 243, 239, 0.5) !important;
      color: var(--primary) !important;
    }
    .accordion-title::before,
    .accordion-title::after {
      content: '' !important;
      position: absolute;
      right: 20px;
      top: 50%;
      width: 10px;
      height: 2px;
      background: var(--primary);
      border-radius: 1px;
      transition: transform 0.2s ease;
      margin: 0 !important;
      border: none !important;
      display: block;
    }
    .accordion-title::after {
      transform: translateY(-50%) rotate(90deg);
    }
    .accordion-item.is-active .accordion-title::after {
      transform: translateY(-50%) rotate(0deg);
    }
    .accordion-content {
      padding: 0 20px 24px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      background: transparent !important;
      border: none !important;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--bg);
      padding: 48px 0 96px;
    }
    .cta-box {
      background: var(--bg-alt);
      border-radius: var(--radius);
      padding: 48px 56px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      border: 1px solid var(--border);
    }
    .cta-box p {
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 560px;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 48px;
      padding: 0 32px;
      border: 2px solid var(--primary);
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 500;
      color: var(--primary);
      background: transparent;
      white-space: nowrap;
      cursor: pointer;
      transition: background var(--transition), color var(--transition), transform var(--transition);
      font-family: var(--font-sans);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    /* ===== 页脚 ===== */
    .footer {
      background: var(--bg-footer);
      border-top: 1px solid var(--border);
      padding: 56px 0 0;
      margin-top: auto;
    }
    .footer .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 40px;
      padding-right: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 4fr 3fr 4fr;
      gap: 40px;
      padding-bottom: 40px;
    }
    .footer-brand .brand-name {
      font-family: var(--font-serif);
      font-size: 20px;
      font-weight: 900;
      color: var(--primary);
      display: block;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 320px;
    }
    .footer-col h4 {
      font-family: var(--font-sans);
      font-size: 15px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col ul li a {
      font-size: 14px;
      color: var(--text-secondary);
      transition: color var(--transition);
    }
    .footer-col ul li a:hover {
      color: var(--primary);
    }
    .footer-contact p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.9;
    }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding: 20px 0;
      text-align: center;
    }
    .footer-bottom p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ===== 动效 ===== */
    @keyframes fadeUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .page-head .head-text {
      animation: fadeUp 0.6s ease both;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      body {
        display: block;
      }
      .app-sidebar {
        display: none;
      }
      .app-main {
        margin-left: 0;
      }
      .mobile-header {
        display: flex;
      }
      .container {
        padding-left: 20px;
        padding-right: 20px;
      }
      .page-head {
        padding: 48px 0 40px;
      }
      .head-text h1 {
        font-size: 32px;
      }
      .module-section,
      .feature-section,
      .faq-section {
        padding: 64px 0;
      }
      .cta-section {
        padding: 32px 0 64px;
      }
      .cta-box {
        flex-direction: column;
        align-items: flex-start;
        padding: 36px 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }
    @media (max-width: 768px) {
      .head-content {
        flex-direction: column;
        gap: 20px;
      }
      .head-decor {
        width: 80px;
        margin-top: 0;
      }
      .section-head h2 {
        font-size: 24px;
      }
      .feature-row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 22px 0;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .cta-box {
        padding: 28px 24px;
      }
      .cta-box .btn-outline {
        width: 100%;
        justify-content: center;
      }
    }
    @media (max-width: 520px) {
      .head-text h1 {
        font-size: 28px;
      }
      .breadcrumb {
        flex-wrap: wrap;
        font-size: 13px;
      }
      .sidebar-brand .brand-name,
      .mobile-header .brand-name {
        font-size: 18px;
      }
      .service-card .card-body {
        padding: 20px;
      }
    }

/* roulang page: category3 */
/* ========== Design Variables ========== */
        :root {
            --primary: #0E4B3A;
            --primary-hover: #083A2B;
            --accent: #B98A4B;
            --accent-hover: #A3793E;
            --bg-page: #F6F3EB;
            --bg-soft: #EDF3EF;
            --bg-footer: #EFEBE2;
            --text-main: #1D1D1A;
            --text-sub: #5C5C58;
            --text-weak: #A8A8A4;
            --border: #DFE4DC;
            --radius: 10px;
            --radius-sm: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.07);
            --shadow-float: 0 12px 32px rgba(0, 0, 0, 0.08);
            --font-title: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --transition: cubic-bezier(0.2, 0, 0, 1);
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-page);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s var(--transition), background 0.2s var(--transition), border-color 0.2s var(--transition), transform 0.2s var(--transition), box-shadow 0.2s var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-title);
            color: var(--text-main);
            line-height: 1.3;
        }

        /* ========== Layout ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 260px;
            background: var(--bg-page);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
            padding: 0 20px;
        }
        .sidebar-brand {
            height: 80px;
            display: flex;
            align-items: center;
            padding: 0 8px;
            border-bottom: 1px solid var(--border);
        }
        .brand-logo {
            font-family: var(--font-title);
            font-size: 23px;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .sidebar-nav {
            flex: 1;
            padding-top: 28px;
        }
        .sidebar-nav ul li {
            margin-bottom: 4px;
        }
        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 46px;
            padding: 0 20px;
            border-radius: var(--radius-sm);
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            transition: background 0.2s var(--transition), color 0.2s var(--transition), border-left 0.2s var(--transition);
            border-left: 3px solid transparent;
        }
        .sidebar-nav ul li a i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: var(--text-weak);
            transition: color 0.2s var(--transition);
        }
        .sidebar-nav ul li a:hover {
            background: var(--bg-soft);
            color: var(--primary);
        }
        .sidebar-nav ul li a:hover i {
            color: var(--primary);
        }
        .sidebar-nav ul li.active a {
            background: var(--bg-soft);
            color: var(--primary);
            border-left-color: var(--primary);
            font-weight: 700;
        }
        .sidebar-nav ul li.active a i {
            color: var(--primary);
        }
        .sidebar-bottom {
            padding: 24px 8px 20px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-weak);
        }
        .sidebar-bottom p {
            margin-bottom: 4px;
        }

        .main-wrapper {
            margin-left: 260px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========== Mobile Header ========== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            height: 60px;
            background: var(--bg-page);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 90;
        }
        .mobile-header .menu-toggle {
            width: 40px;
            height: 40px;
            border: none;
            background: transparent;
            border-radius: var(--radius-sm);
            color: var(--primary);
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-header .mobile-brand {
            font-family: var(--font-title);
            font-size: 19px;
            font-weight: 900;
            color: var(--primary);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.3);
            z-index: 110;
        }
        .drawer-overlay.show {
            display: block;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-sub);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-weak);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ========== Category Banner ========== */
        .category-banner {
            padding: 56px 0 48px;
            position: relative;
            background: var(--bg-page);
        }
        .category-banner-inner {
            position: relative;
            max-width: 860px;
        }
        .category-banner h1 {
            font-size: 38px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 20px;
        }
        .category-banner .page-intro {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-sub);
            max-width: 640px;
        }
        .banner-accent {
            position: absolute;
            top: 12px;
            right: -40px;
            width: 120px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            transform: rotate(-4deg);
        }

        /* ========== Section Common ========== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: var(--bg-soft);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 640px;
        }
        .section-rule {
            width: 48px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin-bottom: 20px;
        }

        /* ========== Service Cards ========== */
        .service-cards-row {
            margin-top: 24px;
        }
        .service-card {
            background: var(--bg-page);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 36px 30px 28px;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: transform 0.2s var(--transition), box-shadow 0.2s var(--transition);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.2s var(--transition);
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card-main {
            margin-bottom: 24px;
        }
        .service-card-secondary {
            margin-bottom: 24px;
        }
        .service-card-tertiary {
            margin-bottom: 0;
        }
        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 24px;
        }
        .service-card h3 {
            font-size: 21px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .service-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-sub);
            margin-bottom: 20px;
            flex: 1;
        }
        .service-badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--bg-soft);
            border-radius: 999px;
            padding: 4px 12px;
            margin-bottom: 16px;
        }
        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            height: 36px;
        }
        .service-link i {
            font-size: 13px;
            transition: transform 0.2s var(--transition);
        }
        .service-link:hover i {
            transform: translateX(4px);
        }
        .service-link:hover {
            color: var(--accent-hover);
        }

        /* ========== Feature Image Block ========== */
        .feature-block {
            margin-top: -28px;
        }
        .feature-image-wrap {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-float);
        }
        .feature-image-wrap img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .feature-caption {
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ========== Detail List ========== */
        .detail-list {
            border-top: 1px solid var(--border);
        }
        .detail-list li {
            padding: 26px 0;
            border-bottom: 1px solid var(--border);
            display: grid;
            grid-template-columns: 156px 1fr;
            gap: 28px;
            align-items: start;
        }
        .detail-title {
            font-family: var(--font-title);
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
        }
        .detail-desc {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-sub);
        }
        .detail-image-wrap {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .detail-image-wrap img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        /* ========== FAQ Accordion ========== */
        .accordion {
            background: transparent;
            border: none;
        }
        .accordion-item {
            background: transparent;
            border-bottom: 1px solid var(--border);
        }
        .accordion-item .accordion-title {
            font-family: var(--font-body);
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            background: transparent;
            border: none;
            padding: 20px 44px 20px 0;
            position: relative;
            min-height: 56px;
            display: flex;
            align-items: center;
            line-height: 1.4;
        }
        .accordion-item .accordion-title:hover,
        .accordion-item .accordion-title:focus {
            color: var(--primary);
            background: transparent;
        }
        .accordion-item .accordion-title::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--accent);
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            transition: transform 0.3s var(--transition);
        }
        .accordion-item.is-active > .accordion-title::after {
            transform: translateY(-50%) rotate(180deg);
        }
        .accordion-item .accordion-content {
            background: transparent;
            border: none;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            padding: 0 32px 24px 0;
        }
        .accordion-item .accordion-content p {
            margin-bottom: 8px;
        }

        /* ========== CTA ========== */
        .cta-box {
            background: var(--bg-page);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 56px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cta-text h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-text p {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 520px;
            margin-bottom: 0;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            cursor: pointer;
            white-space: nowrap;
            transition: background 0.2s var(--transition), color 0.2s var(--transition), transform 0.2s var(--transition), box-shadow 0.2s var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ========== Footer ========== */
        .footer {
            margin-top: auto;
            background: var(--bg-footer);
            border-top: 1px solid var(--border);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }
        .footer-brand .brand-name {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 900;
            color: var(--primary);
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-family: var(--font-body);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-sub);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 8px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 24px;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-weak);
        }

        /* ========== Responsive ========== */
        @media screen and (max-width: 1023px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                width: 280px;
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.08);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .container {
                padding: 0 24px;
            }
            .section {
                padding: 64px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .category-banner h1 {
                font-size: 34px;
            }
            .banner-accent {
                right: 0;
            }
            .feature-image-wrap img {
                height: 280px;
            }
            .detail-image-wrap {
                margin-top: 24px;
            }
            .detail-image-wrap img {
                height: 300px;
            }
            .cta-box {
                padding: 40px 28px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media screen and (max-width: 767px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .category-banner {
                padding: 32px 0 36px;
            }
            .category-banner h1 {
                font-size: 28px;
            }
            .category-banner .page-intro {
                font-size: 16px;
            }
            .banner-accent {
                width: 90px;
            }
            .service-card {
                padding: 24px 20px 20px;
            }
            .detail-list li {
                grid-template-columns: 1fr;
                gap: 8px;
                padding: 20px 0;
            }
            .detail-title {
                font-size: 17px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-text h2 {
                font-size: 22px;
            }
            .feature-image-wrap img {
                height: 220px;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 20px;
            }
            .service-card {
                margin-bottom: 16px;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }