/* roulang page: index */
:root{
  --color-bg:#F8F7F4;
  --color-bg-deep:#0F1A17;
  --color-surface:#FFFFFF;
  --color-primary:#155E4F;
  --color-primary-hover:#0D4438;
  --color-accent:#C19A5B;
  --color-text-main:#111D1A;
  --color-text-sub:#5D6B66;
  --color-border:#E5E0D5;
  --color-outline:#C19A5B;
  --radius-card:16px;
  --radius-sm:8px;
  --radius-chip:999px;
  --shadow-card:0 20px 60px -30px rgba(16,42,33,0.20);
  --shadow-card-hover:0 30px 80px -30px rgba(16,42,33,0.30);
  --transition-base:all 200ms ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--color-bg);
  color:var(--color-text-main);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:none;background:none;cursor:pointer}
.container{max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 40px}}
/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--color-border);
  height:72px;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:20px;font-weight:700;color:var(--color-text-main);letter-spacing:-0.2px}
.brand-sub{font-size:11px;color:var(--color-text-sub);letter-spacing:2px;margin-top:2px}
.main-nav{display:flex;gap:8px;align-items:center}
.nav-chip{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;
  border-radius:var(--radius-chip);font-size:14px;font-weight:500;
  color:var(--color-text-main);background:transparent;
  border:1px solid var(--color-border);
  transition:var(--transition-base);white-space:nowrap;
}
.nav-chip:hover{border-color:var(--color-accent);color:var(--color-primary)}
.nav-chip.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.nav-chip:focus-visible{outline:2px solid var(--color-outline);outline-offset:2px}
.header-cta{display:flex;align-items:center}
.nav-scroll{display:none}
@media(max-width:767px){
  .main-nav{display:none}
  .nav-scroll{
    display:flex;gap:8px;overflow-x:auto;padding:4px 20px;
    scrollbar-width:none;position:fixed;top:72px;left:0;right:0;
    background:var(--color-bg);z-index:99;
  }
  .nav-scroll::-webkit-scrollbar{display:none}
  .nav-scroll .nav-chip{flex-shrink:0}
  .header-cta .btn-primary{padding:0 18px;height:44px}
}
/* 按钮 */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 28px;
  background:var(--color-primary);color:#fff;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;transition:var(--transition-base);
  border:1px solid transparent;
}
.btn-primary:hover{background:var(--color-primary-hover);transform:translateY(-1px)}
.btn-primary:active{transform:scale(0.98)}
.btn-primary:focus-visible{outline:2px solid var(--color-outline);outline-offset:2px}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 28px;
  background:transparent;color:var(--color-primary);border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;transition:var(--transition-base);
  border:1px solid var(--color-border);
}
.btn-secondary:hover{border-color:var(--color-accent);color:var(--color-primary);transform:translateY(-1px)}
.btn-secondary:active{transform:scale(0.98)}
.btn-secondary:focus-visible{outline:2px solid var(--color-outline);outline-offset:2px}
.btn-large{height:56px;padding:0 40px;border-radius:10px;font-size:16px}
.btn-gold{
  background:var(--color-accent);color:#fff;border-color:transparent;
}
.btn-gold:hover{background:#a9864a}
/* Hero */
.hero{position:relative;padding:160px 0 100px;overflow:hidden;min-height:680px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:rgba(248,247,244,0.88)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr 0.9fr;gap:60px;align-items:center;width:100%}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:var(--radius-chip);
  border:1px solid var(--color-accent);color:var(--color-primary);
  font-size:13px;font-weight:600;margin-bottom:24px;
  background:rgba(255,255,255,0.7);
}
.hero h1{font-size:56px;line-height:1.15;font-weight:800;letter-spacing:-1px;margin-bottom:20px;color:var(--color-text-main)}
.hero-sub{font-size:18px;color:var(--color-text-sub);line-height:1.7;margin-bottom:32px;max-width:480px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.hero-media{position:relative}
.hero-img{
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  border:1px solid var(--color-border);
}
.hero-frame{
  position:absolute;top:-20px;left:-20px;width:100%;height:100%;
  border:1px solid var(--color-accent);border-radius:calc(var(--radius-card) + 4px);
  z-index:-1;opacity:0.5;
}
.hero-note{
  display:flex;align-items:center;gap:8px;margin-top:20px;
  color:var(--color-text-sub);font-size:14px;
}
.hero-note .dot{width:8px;height:8px;border-radius:50%;background:var(--color-primary);display:inline-block}
@media(max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:40px}
  .hero-media{max-width:520px}
}
@media(max-width:767px){
  .hero{padding:130px 0 60px}
  .hero h1{font-size:32px;line-height:1.25}
  .hero-sub{font-size:16px}
  .hero-actions .btn-large{width:100%}
}
/* 数据条 */
.stats-section{padding:60px 0;border-bottom:1px solid var(--color-border);background:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;text-align:center}
.stat-num{font-size:42px;font-weight:800;color:var(--color-primary);letter-spacing:-1px;line-height:1.2;font-family:Inter,system-ui,sans-serif}
.stat-label{font-size:14px;color:var(--color-text-sub);margin-top:8px;letter-spacing:0.5px}
@media(max-width:767px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px 20px}
  .stat-num{font-size:32px}
}
/* 板块通用 */
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:56px}
.section-kicker{font-size:13px;font-weight:700;color:var(--color-accent);letter-spacing:3px;text-transform:uppercase;margin-bottom:8px}
.section-title{font-size:32px;font-weight:800;letter-spacing:-0.5px;line-height:1.25}
.section-sub{font-size:16px;color:var(--color-text-sub);max-width:480px}
@media(max-width:767px){
  .section{padding:64px 0}
  .section-head{flex-direction:column;gap:16px;margin-bottom:40px}
  .section-title{font-size:24px}
}
/* 功能卡片 */
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{
  background:var(--color-surface);border-radius:var(--radius-card);
  border:1px solid var(--color-border);padding:32px;
  box-shadow:var(--shadow-card);transition:var(--transition-base);
  position:relative;
}
.feature-card:nth-child(2){transform:translateY(24px)}
.feature-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-card-hover);transform:translateY(-2px) scale(1.01)}
.feature-card:nth-child(2):hover{transform:translateY(22px) scale(1.01)}
.feature-card:focus-within{outline:2px solid var(--color-outline);outline-offset:2px}
.feature-icon{width:52px;height:52px;border-radius:12px;background:rgba(21,94,79,0.08);display:flex;align-items:center;justify-content:center;margin-bottom:20px;transition:var(--transition-base)}
.feature-card:hover .feature-icon{transform:translateY(-4px)}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--color-text-sub);font-size:15px;line-height:1.7}
.feature-card .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14px;font-weight:600;color:var(--color-primary);
  transition:var(--transition-base);
}
.feature-card .more:hover{gap:10px;color:var(--color-primary-hover)}
@media(max-width:767px){
  .feature-grid{grid-template-columns:1fr}
  .feature-card:nth-child(2){transform:none}
  .feature-card:nth-child(2):hover{transform:translateY(-2px)}
}
/* 使用场景 */
.scenarios-section{background:var(--color-bg-deep);color:#fff}
.scenarios-section .section-title{color:#fff}
.scenarios-section .section-sub{color:rgba(255,255,255,0.7)}
.scenario-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:80px}
.scenario-row:last-child{margin-bottom:0}
.scenario-row.reverse .scenario-media{order:2}
.scenario-media{position:relative}
.scenario-media img{border-radius:var(--radius-card);border:1px solid rgba(193,154,91,0.4);box-shadow:0 30px 60px -20px rgba(0,0,0,0.5)}
.scenario-media::after{content:"";position:absolute;top:-16px;left:-16px;right:16px;bottom:16px;border:1px solid rgba(193,154,91,0.3);border-radius:var(--radius-card);z-index:-1}
.scenario-content .scenario-tag{font-size:13px;font-weight:700;color:var(--color-accent);letter-spacing:2px;margin-bottom:16px}
.scenario-content h3{font-size:26px;font-weight:700;margin-bottom:16px;color:#fff;line-height:1.4}
.scenario-content p{font-size:16px;line-height:1.8;color:rgba(255,255,255,0.75);margin-bottom:24px}
.scenario-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--color-accent);transition:var(--transition-base)}
.scenario-link:hover{gap:10px}
@media(max-width:1023px){
  .scenario-row{grid-template-columns:1fr;gap:40px}
  .scenario-row.reverse .scenario-media{order:0}
}
/* 资讯列表 */
.news-section{background:#fff}
.news-list{max-width:860px;margin:0 auto}
.news-row{
  display:flex;align-items:center;gap:24px;
  padding:24px 20px;border-bottom:1px solid var(--color-border);
  transition:var(--transition-base);border-radius:var(--radius-sm);
}
.news-row:hover{background:var(--color-bg)}
.news-row:hover .news-title{color:var(--color-primary)}
.news-date{width:76px;flex-shrink:0}
.news-date-label{font-size:14px;font-weight:600;color:var(--color-text-sub);font-family:Inter,system-ui,sans-serif;background:var(--color-bg);padding:4px 12px;border-radius:var(--radius-chip)}
.news-main{flex:1;min-width:0}
.news-title{font-size:17px;font-weight:600;margin:4px 0 4px;transition:var(--transition-base);line-height:1.4}
.news-excerpt{font-size:14px;color:var(--color-text-sub);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-link{
  flex-shrink:0;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--color-border);color:var(--color-primary);
  font-size:18px;transition:var(--transition-base);
}
.news-row:hover .news-link{border-color:var(--color-accent);transform:translateX(4px)}
.news-empty{
  border:1px dashed var(--color-border);border-radius:var(--radius-card);
  padding:48px 20px;text-align:center;color:var(--color-text-sub);
  font-size:15px;background:var(--color-bg);
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--radius-chip);font-size:12px;font-weight:600;
  border:1px solid rgba(193,154,91,0.5);color:var(--color-primary);
  background:rgba(193,154,91,0.06);
}
@media(max-width:767px){
  .news-row{flex-direction:column;align-items:flex-start;gap:12px}
  .news-date{width:auto}
}
/* 案例 */
.case-section{background:var(--color-bg)}
.case-layout{display:grid;grid-template-columns:1fr auto;gap:80px;align-items:center}
.case-list .case-item{
  display:flex;align-items:flex-start;gap:16px;padding:20px 0;
  border-bottom:1px solid var(--color-border);
}
.case-item:last-child{border-bottom:none}
.case-num{font-size:13px;font-weight:700;color:var(--color-accent);letter-spacing:1px;flex-shrink:0;margin-top:4px}
.case-item h4{font-size:17px;font-weight:600;margin-bottom:4px}
.case-item p{font-size:15px;color:var(--color-text-sub)}
.case-big{text-align:center}
.case-big-num{font-size:96px;font-weight:800;color:var(--color-primary);letter-spacing:-3px;line-height:1;font-family:Inter,system-ui,sans-serif}
.case-big-label{font-size:15px;color:var(--color-text-sub);margin-top:12px}
@media(max-width:1023px){
  .case-layout{grid-template-columns:1fr;gap:48px}
}
@media(max-width:767px){
  .case-big-num{font-size:72px}
}
/* 价格 */
.pricing-section{background:#fff}
.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;max-width:880px;margin:0 auto}
.pricing-card{
  background:var(--color-surface);border-radius:var(--radius-card);
  border:1px solid var(--color-border);padding:40px 36px;
  box-shadow:var(--shadow-card);transition:var(--transition-base);
  position:relative;
}
.pricing-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}
.pricing-card.featured{border-color:var(--color-primary);border-width:2px}
.pricing-badge{
  position:absolute;top:-14px;right:24px;
  background:var(--color-accent);color:#fff;font-size:12px;font-weight:700;
  padding:6px 16px;border-radius:var(--radius-chip);
  letter-spacing:0.5px;
}
.pricing-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.pricing-price{font-size:20px;color:var(--color-text-sub);margin-bottom:24px}
.pricing-list{list-style:none;margin-bottom:32px}
.pricing-list li{
  padding:6px 0;font-size:15px;color:var(--color-text-main);
  display:flex;align-items:center;gap:8px;
}
.pricing-list li::before{content:"—";color:var(--color-accent);font-weight:700}
@media(max-width:767px){
  .pricing-grid{grid-template-columns:1fr}
}
/* FAQ */
.faq-section{background:var(--color-bg)}
.faq-wrap{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--color-border)}
.faq-item:first-child{border-top:1px solid var(--color-border)}
.faq-toggle{
  display:flex;align-items:center;gap:16px;width:100%;text-align:left;
  padding:20px 0;min-height:52px;font-size:17px;font-weight:600;color:var(--color-text-main);
  transition:var(--transition-base);
}
.faq-toggle:focus-visible{outline:2px solid var(--color-outline);outline-offset:2px}
.faq-icon{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--color-border);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-size:18px;font-weight:400;color:var(--color-primary);transition:var(--transition-base);
}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--color-accent);color:var(--color-accent)}
.faq-content{max-height:0;overflow:hidden;transition:max-height 300ms ease}
.faq-answer{padding:0 0 20px 48px;font-size:15px;color:var(--color-text-sub);line-height:1.8}
@media(max-width:767px){
  .faq-answer{padding-left:0}
}
/* CTA */
.cta-section{
  position:relative;background:var(--color-bg-deep);
  text-align:center;padding:96px 20px;overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  opacity:0.12;
}
.cta-inner{position:relative;z-index:1}
.cta-title{font-size:36px;font-weight:800;color:#fff;margin-bottom:16px;line-height:1.3}
.cta-sub{font-size:16px;color:rgba(255,255,255,0.7);margin-bottom:36px}
@media(max-width:767px){
  .cta-section{padding:64px 20px}
  .cta-title{font-size:26px}
  .cta-section .btn-gold{width:100%}
}
/* 页脚 */
.site-footer{background:var(--color-bg-deep);color:#CBD5D1;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .footer-logo{font-size:20px;font-weight:700;color:#fff;display:block;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,0.6);max-width:280px}
.footer-nav h4,.footer-service h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:0.5px}
.footer-nav a{
  display:block;font-size:14px;color:rgba(255,255,255,0.6);
  padding:6px 0;transition:var(--transition-base);
}
.footer-nav a:hover{color:var(--color-accent);padding-left:6px}
.footer-service p{font-size:14px;color:rgba(255,255,255,0.6);padding:4px 0;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.12);padding:20px 0;text-align:center}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,0.4)}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
}
/* 动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 400ms ease,transform 400ms ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.hero-inner .hero-content{animation:heroIn 400ms ease-out both}
.hero-inner .hero-media{animation:heroIn 400ms ease-out 200ms both}
@keyframes heroIn{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}

/* roulang page: category1 */
:root {
      --color-bg: #F8F7F4;
      --color-bg-deep: #0F1A17;
      --color-surface: #FFFFFF;
      --color-primary: #155E4F;
      --color-primary-hover: #0D4438;
      --color-accent: #C19A5B;
      --color-text-main: #111D1A;
      --color-text-sub: #5D6B66;
      --color-border: #E5E0D5;
      --color-outline: #C19A5B;
      --radius-card: 16px;
      --radius-sm: 8px;
      --radius-chip: 999px;
      --shadow-card: 0 20px 60px -30px rgba(16,42,33,0.20);
      --shadow-card-hover: 0 30px 80px -30px rgba(16,42,33,0.30);
      --transition-base: all 200ms ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--color-text-main);
      background-color: var(--color-bg);
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-base);
    }
    img {
      max-width: 100%;
      display: block;
    }
    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    @media (min-width: 768px) {
      .container {
        padding-left: 40px;
        padding-right: 40px;
      }
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .site-header::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--color-accent);
      opacity: 0.6;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      gap: 20px;
    }
    .brand {
      display: flex;
      align-items: baseline;
      gap: 6px;
      flex-shrink: 0;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.3px;
      color: var(--color-text-main);
    }
    .brand-sub {
      font-size: 11px;
      color: var(--color-text-sub);
      border: 1px solid var(--color-border);
      border-radius: 999px;
      padding: 1px 8px;
      letter-spacing: 1px;
    }
    .main-nav {
      display: flex;
      gap: 8px;
      align-items: center;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
      flex: 1;
      justify-content: center;
    }
    .main-nav::-webkit-scrollbar {
      display: none;
    }
    .nav-chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 20px;
      border-radius: 999px;
      border: 1px solid var(--color-border);
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-main);
      background: transparent;
      white-space: nowrap;
      transition: all 0.2s ease;
    }
    .nav-chip:hover {
      border-color: var(--color-accent);
      color: var(--color-primary);
    }
    .nav-chip.active {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
      font-weight: 600;
    }
    .nav-chip.active:hover {
      background: var(--color-primary-hover);
      color: #fff;
    }
    .nav-chip:focus-visible {
      outline: 2px solid var(--color-outline);
      outline-offset: 2px;
    }
    .header-cta {
      flex-shrink: 0;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 28px;
      border-radius: 8px;
      background: var(--color-primary);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      transition: all 200ms ease;
      white-space: nowrap;
    }
    .btn-primary:hover {
      background: var(--color-primary-hover);
      transform: translateY(-1px);
    }
    .btn-primary:active {
      transform: scale(0.98);
    }
    .btn-primary:focus-visible {
      outline: 2px solid var(--color-outline);
      outline-offset: 2px;
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 28px;
      border-radius: 8px;
      background: transparent;
      border: 1px solid var(--color-border);
      color: var(--color-primary);
      font-size: 15px;
      font-weight: 500;
      transition: all 200ms ease;
      white-space: nowrap;
    }
    .btn-secondary:hover {
      border-color: var(--color-accent);
      color: var(--color-primary);
    }
    .btn-secondary:active {
      transform: scale(0.98);
    }
    .btn-secondary:focus-visible {
      outline: 2px solid var(--color-outline);
      outline-offset: 2px;
    }
    .btn-large {
      height: 56px;
      padding: 0 40px;
      border-radius: 10px;
      font-size: 16px;
    }
    .page-hero {
      position: relative;
      background: var(--color-bg);
      padding: 80px 0 60px;
      overflow: hidden;
      border-bottom: 1px solid var(--color-border);
    }
    .page-hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.png');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
      z-index: 0;
    }
    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(to bottom, rgba(248, 247, 244, 0.9), rgba(248, 247, 244, 0.98));
      z-index: 1;
    }
    .page-hero .container {
      position: relative;
      z-index: 2;
    }
    .page-hero-inner {
      max-width: 760px;
      margin: 0 auto;
      text-align: center;
    }
    .page-hero h1 {
      font-size: 44px;
      line-height: 1.15;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--color-text-main);
      margin-bottom: 16px;
    }
    .page-hero-divider {
      width: 48px;
      height: 3px;
      background: var(--color-accent);
      border-radius: 2px;
      margin: 0 auto 24px;
    }
    .page-hero-intro {
      font-size: 16px;
      line-height: 1.8;
      color: var(--color-text-sub);
      max-width: 600px;
      margin: 0 auto;
    }
    .section {
      padding: 80px 0;
    }
    .section-alt {
      background: var(--color-surface);
    }
    .section-deep {
      background: var(--color-bg-deep);
      color: #fff;
    }
    .section-head {
      text-align: center;
      margin-bottom: 56px;
    }
    .section-head .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--color-accent);
      margin-bottom: 12px;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.25;
      color: var(--color-text-main);
      letter-spacing: -0.3px;
    }
    .section-head-deep h2 {
      color: #fff;
    }
    .section-head .section-desc {
      margin-top: 12px;
      font-size: 16px;
      color: var(--color-text-sub);
      max-width: 560px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-head-deep .section-desc {
      color: #A3B5AE;
    }
    .card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      padding: 28px;
      transition: all 240ms ease;
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: var(--color-accent);
      box-shadow: var(--shadow-card-hover);
    }
    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(21, 94, 79, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--color-primary);
      font-size: 22px;
      transition: transform 200ms ease;
    }
    .card:hover .card-icon {
      transform: translateY(-4px);
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--color-text-main);
    }
    .card-text {
      font-size: 14px;
      line-height: 1.7;
      color: var(--color-text-sub);
    }
    .feature-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
    }
    @media (min-width: 768px) {
      .feature-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    .feature-grid .card:nth-child(even) {
      transform: translateY(0);
    }
    @media (min-width: 1024px) {
      .feature-grid .card:nth-child(even) {
        transform: translateY(24px);
      }
      .feature-grid .card:nth-child(even):hover {
        transform: translateY(20px);
      }
    }
    .feature-grid .card:nth-child(even):hover {
      transform: translateY(-2px);
    }
    .flow-section {
      background: var(--color-bg);
    }
    .flow-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
      margin-top: 40px;
    }
    @media (min-width: 768px) {
      .flow-grid {
        grid-template-columns: 1fr 1fr 1fr;
      }
    }
    .flow-item {
      background: var(--color-surface);
      border-radius: var(--radius-card);
      padding: 32px 28px;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-card);
      transition: all 240ms ease;
      position: relative;
    }
    .flow-item:hover {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-2px);
    }
    .flow-num {
      font-size: 38px;
      font-weight: 800;
      color: var(--color-accent);
      line-height: 1;
      margin-bottom: 16px;
      font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
    }
    .flow-item h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--color-text-main);
    }
    .flow-item p {
      font-size: 14px;
      color: var(--color-text-sub);
      line-height: 1.7;
    }
    .media-row {
      display: grid;
      grid-template-columns: 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 56px;
    }
    @media (min-width: 1024px) {
      .media-row {
        grid-template-columns: 1fr 1fr;
        gap: 64px;
      }
      .media-row.reverse .media-image {
        order: 2;
      }
    }
    .media-image {
      border-radius: var(--radius-card);
      overflow: hidden;
      position: relative;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--color-border);
    }
    .media-image img {
      width: 100%;
      height: 300px;
      object-fit: cover;
      transition: transform 300ms ease;
    }
    @media (min-width: 768px) {
      .media-image img {
        height: 360px;
      }
    }
    .media-image:hover img {
      transform: scale(1.02);
    }
    .media-content .media-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 1.5px;
      color: var(--color-accent);
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .media-content h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--color-text-main);
      letter-spacing: -0.3px;
    }
    .media-content p {
      font-size: 15px;
      line-height: 1.75;
      color: var(--color-text-sub);
      margin-bottom: 16px;
    }
    .media-list {
      list-style: none;
      margin: 16px 0;
    }
    .media-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--color-text-sub);
      padding: 4px 0;
    }
    .media-list li i {
      color: var(--color-accent);
      font-size: 13px;
      margin-top: 5px;
      flex-shrink: 0;
    }
    .link-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-primary);
      margin-top: 8px;
    }
    .link-more:hover {
      color: var(--color-accent);
    }
    .link-more i {
      font-size: 12px;
      transition: transform 200ms ease;
    }
    .link-more:hover i {
      transform: translateX(4px);
    }
    .faq-section {
      background: var(--color-bg);
    }
    .faq-list {
      max-width: 780px;
      margin: 0 auto;
    }
    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }
    .faq-item:first-child {
      border-top: 1px solid var(--color-border);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 20px 0;
      text-align: left;
      min-height: 52px;
      transition: all 200ms ease;
    }
    .faq-question:hover .faq-icon {
      border-color: var(--color-accent);
      color: var(--color-accent);
    }
    .faq-question:focus-visible {
      outline: 2px solid var(--color-outline);
      outline-offset: 2px;
      border-radius: 8px;
    }
    .faq-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      border: 1px solid var(--color-border);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-size: 16px;
      color: var(--color-primary);
      transition: all 300ms ease;
    }
    .faq-question[aria-expanded="true"] .faq-icon {
      transform: rotate(45deg);
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }
    .faq-q-text {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-text-main);
      line-height: 1.5;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 300ms ease;
    }
    .faq-answer-inner {
      padding: 0 0 20px 48px;
      font-size: 15px;
      line-height: 1.75;
      color: var(--color-text-sub);
    }
    .footer-cta {
      background: var(--color-bg-deep);
      padding: 72px 0;
      position: relative;
      overflow: hidden;
      text-align: center;
    }
    .footer-cta::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
    }
    .footer-cta .container {
      position: relative;
      z-index: 1;
    }
    .footer-cta h2 {
      font-size: 32px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }
    .footer-cta p {
      color: #A3B5AE;
      font-size: 15px;
      margin-bottom: 28px;
    }
    .btn-gold {
      background: var(--color-accent);
      color: #fff;
      border: none;
    }
    .btn-gold:hover {
      background: #A8813F;
      color: #fff;
    }
    .site-footer {
      background: var(--color-bg-deep);
      color: #CBD5D1;
      padding-top: 64px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 40px;
      padding-bottom: 48px;
    }
    @media (min-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 32px;
      }
    }
    .footer-logo {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      display: block;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: #889188;
    }
    .footer-nav h4,
    .footer-service h4 {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .footer-nav a {
      display: block;
      font-size: 14px;
      color: #889188;
      padding: 6px 0;
      transition: all 200ms ease;
    }
    .footer-nav a:hover {
      color: var(--color-accent);
    }
    .footer-service p {
      font-size: 14px;
      color: #889188;
      padding: 6px 0;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px 0;
    }
    .footer-bottom p {
      font-size: 12px;
      color: #889188;
      text-align: center;
    }
    .related-links {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .chip-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      height: 44px;
      padding: 0 24px;
      border-radius: 999px;
      border: 1px solid var(--color-border);
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-main);
      background: var(--color-surface);
      transition: all 200ms ease;
    }
    .chip-link:hover {
      border-color: var(--color-accent);
      color: var(--color-primary);
      box-shadow: var(--shadow-card);
    }
    .chip-link:focus-visible {
      outline: 2px solid var(--color-outline);
      outline-offset: 2px;
    }
    .badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.5px;
      border: 1px solid rgba(193, 154, 91, 0.4);
      color: var(--color-accent);
      background: rgba(193, 154, 91, 0.08);
    }
    .section-number {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 3px;
      color: var(--color-accent);
      display: block;
      margin-bottom: 8px;
    }
    @media (max-width: 767px) {
      .page-hero h1 {
        font-size: 28px;
      }
      .section {
        padding: 64px 0;
      }
      .section-head h2 {
        font-size: 24px;
      }
      .site-header {
        height: auto;
        padding: 12px 0;
      }
      .header-inner {
        flex-wrap: wrap;
        gap: 10px;
      }
      .brand {
        flex: 1;
      }
      .header-cta {
        margin-left: auto;
      }
      .header-cta .btn-primary {
        height: 40px;
        padding: 0 18px;
        font-size: 14px;
      }
      .main-nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        padding-bottom: 4px;
        flex-wrap: nowrap;
        overflow-x: auto;
      }
      .nav-chip {
        height: 36px;
        padding: 0 16px;
        font-size: 13px;
      }
      .brand-name {
        font-size: 17px;
      }
      .brand-sub {
        display: none;
      }
      .footer-cta h2 {
        font-size: 24px;
      }
      .media-content h3 {
        font-size: 20px;
      }
      .btn-large {
        height: 48px;
        padding: 0 28px;
        font-size: 15px;
      }
    }
    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 400ms ease, transform 400ms ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

/* roulang page: category2 */
:root {
            --color-bg: #F8F7F4;
            --color-bg-deep: #0F1A17;
            --color-surface: #FFFFFF;
            --color-primary: #155E4F;
            --color-primary-hover: #0D4438;
            --color-accent: #C19A5B;
            --color-text-main: #111D1A;
            --color-text-sub: #5D6B66;
            --color-border: #E5E0D5;
            --color-outline: #C19A5B;
            --radius-card: 16px;
            --radius-sm: 8px;
            --radius-chip: 999px;
            --shadow-card: 0 20px 60px -30px rgba(16, 42, 33, 0.20);
            --shadow-card-hover: 0 30px 80px -30px rgba(16, 42, 33, 0.30);
            --transition-base: all 200ms ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 20px rgba(16, 42, 33, 0.04);
        }

        .site-header::after {
            content: "";
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent 60%);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .brand {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            flex-shrink: 0;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            letter-spacing: -0.01em;
        }

        .brand-sub {
            font-size: 11px;
            color: var(--color-text-sub);
            letter-spacing: 0.2em;
        }

        .main-nav {
            display: flex;
            gap: 8px;
            align-items: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-chip);
            border: 1px solid var(--color-border);
            background: transparent;
            color: var(--color-text-main);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition-base);
        }

        .nav-chip:hover {
            border-color: var(--color-accent);
            color: var(--color-primary);
        }

        .nav-chip.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .nav-chip.active:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: #fff;
        }

        .header-cta .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition-base);
        }

        .header-cta .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(21, 94, 79, 0.25);
        }

        .header-cta .btn-primary:active {
            transform: scale(0.98);
        }

        .header-cta .btn-primary:focus-visible,
        .nav-chip:focus-visible,
        .btn:focus-visible,
        .faq-toggle:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-outline);
            outline-offset: 2px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 96px 0 80px;
            background: var(--color-bg);
            overflow: hidden;
        }

        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(248, 247, 244, 0.6) 0%, var(--color-bg) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .page-hero-inner {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }

        .page-hero h1 {
            font-size: 48px;
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text-main);
        }

        .page-hero-divider {
            width: 48px;
            height: 2px;
            background: var(--color-accent);
            margin: 28px auto;
            border: none;
        }

        .page-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text-sub);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Section Shared ===== */
        .section-block {
            padding: 96px 0;
        }

        .section-block.tight {
            padding: 64px 0;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-label {
            font-size: 13px;
            letter-spacing: 0.15em;
            color: var(--color-accent);
            font-weight: 600;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-label::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--color-accent);
        }

        .section-head h2 {
            font-size: 32px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-text-main);
            margin-top: 12px;
            letter-spacing: -0.01em;
        }

        @media (max-width: 767px) {
            .section-block {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 24px;
                line-height: 1.3;
            }
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-2px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(21, 94, 79, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            transition: var(--transition-base);
        }

        .feature-card:hover .feature-card-icon {
            transform: scale(1.05);
            background: rgba(21, 94, 79, 0.14);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .feature-card p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-sub);
        }

        .feature-card-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            transition: var(--transition-base);
        }

        .feature-card-more:hover {
            color: var(--color-accent);
            gap: 10px;
        }

        /* ===== Dark Depth Section ===== */
        .depth-section {
            background: var(--color-bg-deep);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .depth-section .section-label {
            color: var(--color-accent);
        }

        .depth-section .section-label::before {
            background: var(--color-accent);
        }

        .depth-section .section-head h2 {
            color: #fff;
        }

        .depth-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin-top: 16px;
        }

        .depth-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 768px) {
            .depth-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        .depth-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 32px;
            transition: var(--transition-base);
        }

        .depth-card:hover {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.07);
        }

        .depth-card-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 16px;
            font-family: "Inter", -apple-system, sans-serif;
            letter-spacing: -0.03em;
        }

        .depth-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }

        .depth-card p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Flow Steps ===== */
        .flow-section {
            background: var(--color-bg);
        }

        .flow-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            counter-reset: step;
        }

        @media (min-width: 768px) {
            .flow-steps {
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }
        }

        .flow-step {
            position: relative;
            padding: 32px 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: var(--transition-base);
        }

        .flow-step:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .flow-step-num {
            font-size: 48px;
            font-weight: 800;
            color: rgba(21, 94, 79, 0.12);
            line-height: 1;
            margin-bottom: 16px;
            font-family: "Inter", sans-serif;
            letter-spacing: -0.04em;
        }

        .flow-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text-main);
        }

        .flow-step p {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.65;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--color-bg);
            padding: 64px 0;
        }

        .related-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-top: 32px;
        }

        .related-chip {
            display: inline-flex;
            align-items: center;
            padding: 12px 28px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-chip);
            background: var(--color-surface);
            color: var(--color-text-main);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .related-chip:hover {
            border-color: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .related-chip.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg);
            padding: 96px 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-toggle {
            width: 100%;
            min-height: 52px;
            background: transparent;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-main);
            transition: var(--transition-base);
        }

        .faq-toggle:hover {
            color: var(--color-primary);
        }

        .faq-toggle .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            transition: var(--transition-base);
            color: var(--color-primary);
        }

        .faq-toggle[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 240ms ease;
        }

        .faq-answer-inner {
            padding-bottom: 20px;
            font-size: 15px;
            color: var(--color-text-sub);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-bg-deep);
            padding: 88px 0;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            margin-bottom: 32px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 56px;
            padding: 0 40px;
            border-radius: 10px;
            background: var(--color-accent);
            color: var(--color-bg-deep);
            font-size: 16px;
            font-weight: 600;
            border: none;
            transition: var(--transition-base);
        }

        .btn-cta:hover {
            background: #d4ad6e;
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(193, 154, 91, 0.3);
        }

        .btn-cta:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 56px;
            padding: 0 40px;
            border-radius: 10px;
            background: transparent;
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.25);
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition-base);
            margin-left: 16px;
        }

        .btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-deep);
            color: #CBD5D1;
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 60px;
            }
        }

        .footer-logo {
            display: inline-block;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #889188;
            max-width: 280px;
        }

        .footer-nav h4,
        .footer-service h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-nav a {
            display: block;
            font-size: 14px;
            color: #889188;
            padding: 4px 0;
            transition: var(--transition-base);
        }

        .footer-nav a:hover {
            color: var(--color-accent);
        }

        .footer-service p {
            font-size: 14px;
            color: #889188;
            padding: 4px 0;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
        }

        .footer-bottom p {
            font-size: 12px;
            color: #889188;
        }

        /* ===== Mobile nav ===== */
        @media (max-width: 767px) {
            .header-inner {
                height: 64px;
                flex-wrap: wrap;
                padding-top: 8px;
                padding-bottom: 8px;
            }
            .brand-name {
                font-size: 16px;
            }
            .brand-sub {
                font-size: 10px;
            }
            .header-cta .btn-primary {
                height: 40px;
                padding: 0 16px;
                font-size: 13px;
            }
            .main-nav {
                order: 3;
                width: 100%;
                padding-top: 4px;
                gap: 6px;
            }
            .nav-chip {
                padding: 8px 14px;
                font-size: 13px;
            }
            .page-hero {
                padding: 64px 0 48px;
            }
            .page-hero h1 {
                font-size: 32px;
                line-height: 1.2;
            }
            .section-block {
                padding: 56px 0;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .btn-cta,
            .btn-secondary {
                height: 50px;
                padding: 0 28px;
                font-size: 15px;
                margin: 8px 0;
            }
            .depth-card-num {
                font-size: 32px;
            }
            .flow-step {
                padding: 24px 20px;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .page-hero h1 {
                font-size: 40px;
            }
        }

        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 300ms ease-out, transform 300ms ease-out;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            * {
                animation: none !important;
            }
        }

/* roulang page: article */
:root {
  --color-bg: #F8F7F4;
  --color-bg-deep: #0F1A17;
  --color-surface: #FFFFFF;
  --color-primary: #155E4F;
  --color-primary-hover: #0D4438;
  --color-accent: #C19A5B;
  --color-text-main: #111D1A;
  --color-text-sub: #5D6B66;
  --color-border: #E5E0D5;
  --color-outline: #C19A5B;
  --radius-card: 16px;
  --radius-sm: 8px;
  --radius-chip: 999px;
  --shadow-card: 0 20px 60px -30px rgba(16,42,33,0.20);
  --shadow-card-hover: 0 30px 80px -30px rgba(16,42,33,0.30);
  --transition-base: all 200ms ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text-main);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-outline);
  outline-offset: 2px;
}

.container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 20px;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.site-header::after {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.brand-sub {
  font-size: 12px;
  color: var(--color-text-sub);
  letter-spacing: 0.28em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 20px;
  border-radius: var(--radius-chip);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition-base);
}

.nav-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-primary);
}

.nav-chip.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.header-cta {
  flex-shrink: 0;
}

.header-cta .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition-base);
}

.header-cta .btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.header-cta .btn-primary:active {
  transform: scale(0.98);
}

/* buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  border: 1px solid var(--color-primary);
  transition: var(--transition-base);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
  transition: var(--transition-base);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  padding: 0 40px;
  border-radius: 10px;
  background: var(--color-accent);
  color: #0F1A17;
  font-weight: 700;
  font-size: 16px;
  transition: var(--transition-base);
}

.btn-cta:hover {
  background: #D6B578;
  transform: translateY(-2px);
}

.btn-cta:active {
  transform: scale(0.98);
}

/* article hero */
.article-hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 68px 0 76px;
  color: #fff;
}

.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 26, 23, 0.92), rgba(15, 26, 23, 0.62));
}

.article-hero .hero-inner {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  animation: fadeInUp 400ms ease-out;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  transition: var(--transition-base);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  opacity: 0.5;
}

.breadcrumb-current {
  color: rgba(255, 255, 255, 0.92);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-width: 260px;
}

.article-chip {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 16px;
  border-radius: var(--radius-chip);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 13px;
  background: rgba(15, 26, 23, 0.35);
  margin-bottom: 16px;
  animation: fadeInUp 400ms ease-out 100ms both;
}

.article-hero-title {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 800;
  color: #fff;
  max-width: 860px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  margin-bottom: 18px;
  animation: fadeInUp 400ms ease-out 200ms both;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  animation: fadeInUp 400ms ease-out 300ms both;
}

.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
}

/* article layout */
.article-layout {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 20px 64px;
}

.article-body {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 40px;
}

.article-cover {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 32px;
}

.article-excerpt {
  background: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 16px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-sub);
  margin-bottom: 32px;
  line-height: 1.75;
  font-size: 15px;
}

.excerpt-content {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-content {
  font-size: 16px;
  line-height: 1.9;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--color-bg-deep);
  padding-left: 14px;
  border-left: 3px solid var(--color-accent);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--color-bg-deep);
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 20px;
  padding-left: 24px;
}

.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}

.article-content a {
  color: var(--color-primary);
  border-bottom: 1px dashed var(--color-accent);
}

.article-content strong {
  font-weight: 700;
  color: var(--color-bg-deep);
}

.article-content blockquote {
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-sub);
  font-style: italic;
  margin: 24px 0;
}

.article-content code {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 14px;
  color: var(--color-bg-deep);
}

.article-content pre {
  background: var(--color-bg-deep);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin: 24px 0;
}

.article-content pre code {
  background: transparent;
  border: none;
  color: #d6e2dc;
  padding: 0;
}

.article-content img {
  border-radius: 12px;
  margin: 24px 0;
}

/* pager */
.article-pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.pager-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.pager-links a {
  color: var(--color-text-sub);
  transition: var(--transition-base);
}

.pager-links a:hover {
  color: var(--color-primary);
}

/* empty state */
.empty-state {
  max-width: 640px;
  margin: 80px auto;
  text-align: center;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px dashed var(--color-border);
  padding: 72px 32px;
}

.empty-state p {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-sub);
  margin-bottom: 24px;
}

/* related */
.related-section {
  background: linear-gradient(180deg, var(--color-bg), #EFECE6);
  padding: 72px 0 80px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-bg-deep);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition-base);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
}

.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.related-card-body {
  padding: 22px 24px 28px;
}

.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-bg-deep);
  transition: var(--transition-base);
}

.related-card:hover h3 {
  color: var(--color-primary);
}

.related-card p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* CTA section */
.cta-section {
  position: relative;
  padding: 84px 0;
  background: var(--color-bg-deep) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(15, 26, 23, 0.82);
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.72);
  margin: 12px 0 32px;
  font-size: 16px;
}

/* footer */
.site-footer {
  background: var(--color-bg-deep);
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 40px;
}

.footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 340px;
}

.footer-nav h4,
.footer-service h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-nav a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  padding: 6px 0;
  transition: var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-accent);
  padding-left: 8px;
}

.footer-service p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 300ms ease, transform 300ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* responsive */
@media (max-width: 1023px) {
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }

  .article-hero-title {
    font-size: 36px;
  }
}

@media (max-width: 767px) {
  .header-inner {
    height: auto;
    flex-wrap: wrap;
    padding-top: 12px;
    padding-bottom: 12px;
    row-gap: 10px;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }

  .brand-name {
    font-size: 17px;
  }

  .brand-sub {
    font-size: 11px;
    letter-spacing: 0.18em;
  }

  .header-cta .btn-primary {
    height: 40px;
    padding: 0 16px;
    font-size: 14px;
  }

  .article-hero {
    padding: 48px 0 52px;
  }

  .article-hero-title {
    font-size: 28px;
  }

  .article-layout {
    padding: 32px 16px 48px;
  }

  .article-body {
    padding: 24px 20px;
  }

  .article-cover {
    height: 220px;
  }

  .article-pager {
    flex-direction: column;
    align-items: flex-start;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .cta-inner h2 {
    font-size: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}