/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --primary:#12665E;
  --primary-dark:#0C4E48;
  --primary-light:rgba(18,102,94,.08);
  --accent:#B8863A;
  --accent-light:rgba(184,134,58,.12);
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --dark:#101A18;
  --dark-text:#A6B0AB;
  --border:#E3E0D9;
  --text:#1C2624;
  --text-secondary:#5A645E;
  --text-placeholder:#9AA09C;
  --radius:4px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(16,26,24,.05);
  --shadow-hover:0 12px 32px rgba(16,26,24,.08);
  --container:1200px;
  --section-pad:96px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
/* ========== Reset ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
input,textarea{font-family:inherit}
::selection{background:var(--primary);color:#fff}
/* ========== 容器 ========== */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
/* ========== 头部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,244,239,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  height:72px;
}
.nav-wrapper{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-size:22px;
  font-weight:800;
  color:var(--text);
  letter-spacing:.02em;
  display:flex;
  align-items:center;
  gap:8px;
}
.logo-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--primary);
  display:inline-block;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
}
.nav-link{
  font-size:15px;
  font-weight:500;
  color:var(--text-secondary);
  position:relative;
  padding:8px 2px;
  transition:color .2s;
}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{
  content:'';
  position:absolute;
  left:50%;
  bottom:-4px;
  transform:translateX(-50%);
  width:4px;height:4px;
  border-radius:50%;
  background:var(--primary);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  padding:10px 24px;
  border-radius:var(--radius);
  transition:all .25s ease;
  border:1px solid transparent;
  line-height:1.4;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:var(--shadow-hover);
}
.btn-primary:active{transform:translateY(0)}
.btn-outline{
  background:transparent;
  border-color:var(--border);
  color:var(--text);
}
.btn-outline:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:var(--primary-light);
}
.btn-accent{
  background:var(--accent);
  color:#fff;
}
.btn-accent:hover{background:#9E7030;transform:translateY(-1px)}
.menu-toggle{
  display:none;
  flex-direction:column;
  width:40px;height:40px;
  align-items:center;
  justify-content:center;
  gap:5px;
  border-radius:var(--radius);
}
.menu-toggle span{
  width:20px;height:2px;
  background:var(--text);
  transition:all .3s;
}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* 移动端抽屉 */
.mobile-drawer{
  display:none;
  position:fixed;
  top:72px;left:0;right:0;
  background:var(--card);
  border-bottom:1px solid var(--border);
  padding:16px 24px 24px;
  flex-direction:column;
  gap:4px;
  box-shadow:var(--shadow-hover);
  z-index:999;
}
.mobile-drawer.open{display:flex;animation:drawerIn .25s ease}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-drawer .nav-link{padding:12px 0;font-size:16px;border-bottom:1px solid var(--border)}
.mobile-drawer .nav-link:last-of-type{border-bottom:none}
.mobile-drawer .nav-link.active{color:var(--primary);font-weight:600}
.mobile-drawer .nav-link.active::after{display:none}
.mobile-drawer .btn{margin-top:12px;width:100%}
/* ========== Hero ========== */
.hero{
  padding:96px 0 88px;
  background:var(--bg);
  border-bottom:1px solid var(--border);
  position:relative;
  overflow:hidden;
}
.hero-inner{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:64px;
  align-items:center;
}
.hero-vertical{
  position:absolute;
  left:24px;
  top:120px;
  writing-mode:vertical-rl;
  font-size:12px;
  letter-spacing:.4em;
  color:var(--border);
  text-transform:uppercase;
  font-weight:500;
}
.hero-content .hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  color:var(--accent);
  background:var(--accent-light);
  padding:4px 14px;
  border-radius:var(--radius-pill);
  margin-bottom:24px;
  letter-spacing:.03em;
}
.hero-content h1{
  font-size:48px;
  line-height:64px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.01em;
  margin-bottom:20px;
}
.hero-content h1 span{
  color:var(--primary);
  position:relative;
}
.hero-content .hero-sub{
  font-size:17px;
  line-height:30px;
  color:var(--text-secondary);
  max-width:520px;
  margin-bottom:36px;
}
.hero-cta{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.hero-media{
  position:relative;
}
.hero-media .img-frame{
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--card);
  box-shadow:var(--shadow);
}
.hero-media .img-frame img{
  width:100%;
  height:420px;
  object-fit:cover;
  transition:transform .5s ease;
}
.hero-media:hover .img-frame img{transform:scale(1.02)}
.hero-media .img-caption{
  display:flex;
  justify-content:space-between;
  padding:12px 16px;
  font-size:13px;
  color:var(--text-placeholder);
  border-top:1px solid var(--border);
  background:var(--card);
}
/* ========== 区块通用 ========== */
.section{
  padding:var(--section-pad) 0;
}
.section-alt{background:var(--card)}
.section-header{
  margin-bottom:56px;
  max-width:680px;
}
.section-tag{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-header h2{
  font-size:32px;
  line-height:44px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.section-header p{
  font-size:16px;
  line-height:28px;
  color:var(--text-secondary);
}
/* ========== 服务概览 ========== */
.services{background:var(--bg)}
.service-list{
  display:flex;
  flex-direction:column;
  gap:48px;
  max-width:880px;
}
.service-item{
  display:flex;
  gap:40px;
  align-items:flex-start;
  max-width:720px;
  transition:transform .3s ease;
}
.service-item:nth-child(even){
  align-self:flex-end;
}
.service-item:hover{transform:translateX(4px)}
.service-num{
  font-size:48px;
  font-weight:700;
  line-height:1.1;
  color:#C9CDC9;
  transition:color .3s ease;
  min-width:100px;
}
.service-item:hover .service-num{color:var(--accent)}
.service-body h3{
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.service-body p{
  font-size:15px;
  line-height:26px;
  color:var(--text-secondary);
}
/* ========== 数据条带 ========== */
.stats-band{
  background:var(--dark);
  padding:72px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.stat-item{
  text-align:center;
  padding:24px 16px;
  border-left:1px solid rgba(255,255,255,.12);
}
.stat-item:first-child{border-left:none}
.stat-num{
  font-size:48px;
  font-weight:700;
  line-height:1.1;
  color:#fff;
  margin-bottom:8px;
  letter-spacing:.02em;
}
.stat-num .suffix{
  font-size:24px;
  color:var(--accent);
  margin-left:2px;
}
.stat-label{
  font-size:14px;
  color:var(--dark-text);
  letter-spacing:.02em;
}
/* ========== 案例 ========== */
.cases{background:var(--card)}
.case-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.case-card{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all .3s ease;
}
.case-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:var(--primary);
}
.case-card .case-img{
  height:200px;
  overflow:hidden;
  border-bottom:1px solid var(--border);
}
.case-card .case-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.case-card:hover .case-img img{transform:scale(1.05)}
.case-body{
  padding:24px 24px 28px;
}
.case-body h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:8px;
  color:var(--text);
}
.case-body p{
  font-size:14px;
  line-height:24px;
  color:var(--text-secondary);
  margin-bottom:16px;
}
.case-result{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  padding:6px 16px;
  background:var(--primary-light);
  border-radius:var(--radius-pill);
}
.case-result::before{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
}
/* ========== 接入方案 ========== */
.approach{background:var(--bg);border-top:1px solid var(--border)}
.timeline{
  display:flex;
  flex-direction:column;
  gap:0;
  max-width:720px;
  position:relative;
  padding-left:36px;
}
.timeline::before{
  content:'';
  position:absolute;
  left:8px;
  top:12px;
  bottom:12px;
  width:1px;
  background:var(--border);
}
.timeline-step{
  position:relative;
  padding-bottom:48px;
}
.timeline-step:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;
  left:-36px;
  top:8px;
  width:17px;height:17px;
  border-radius:50%;
  background:var(--bg);
  border:3px solid var(--primary);
  z-index:1;
  transition:background .3s;
}
.timeline-dot::after{
  content:'';
  position:absolute;
  inset:-7px;
  border-radius:50%;
  border:1px solid transparent;
  transition:border-color .3s;
}
.timeline-step:hover .timeline-dot::after{border-color:var(--accent)}
.timeline-step:hover .timeline-dot{background:var(--primary)}
.timeline-step h3{
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.timeline-step p{
  font-size:15px;
  line-height:26px;
  color:var(--text-secondary);
  max-width:540px;
}
.timeline-step .step-num{
  font-size:12px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:.08em;
  margin-bottom:4px;
  text-transform:uppercase;
}
/* ========== FAQ ========== */
.faq{background:var(--card)}
.faq-list{
  max-width:760px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--border);
}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-question{
  width:100%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:22px 8px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  text-align:left;
  transition:color .2s;
  gap:16px;
}
.faq-question:hover{color:var(--primary)}
.faq-question.active{color:var(--primary)}
.faq-icon{
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  color:var(--text-secondary);
  transition:all .3s;
  flex-shrink:0;
}
.faq-question.active .faq-icon{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
  transform:rotate(45deg);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-answer-inner{
  padding:0 8px 24px;
  font-size:15px;
  line-height:26px;
  color:var(--text-secondary);
}
/* ========== 联系/表单 ========== */
.contact{background:var(--bg);border-top:1px solid var(--border)}
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
}
.contact-info .info-item{
  display:flex;
  gap:16px;
  margin-bottom:28px;
}
.info-icon{
  width:44px;height:44px;
  border-radius:var(--radius);
  background:var(--primary-light);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  font-size:18px;
  flex-shrink:0;
}
.info-item h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:4px;
}
.info-item p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:24px;
}
.contact-form{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.form-group{
  margin-bottom:12px;
}
.form-group label{
  display:block;
  font-size:13px;
  font-weight:500;
  color:var(--text-secondary);
  margin-bottom:4px;
  letter-spacing:.02em;
}
.form-input{
  width:100%;
  border:none;
  border-bottom:1px solid var(--border);
  background:transparent;
  padding:12px 4px;
  font-size:15px;
  color:var(--text);
  transition:border-color .2s;
  border-radius:0;
}
.form-input:focus{
  outline:none;
  border-bottom-color:var(--primary);
}
.form-input::placeholder{color:var(--text-placeholder)}
textarea.form-input{
  min-height:80px;
  resize:vertical;
}
.form-submit{
  margin-top:16px;
}
/* ========== 最新资讯 ========== */
.news{background:var(--card)}
.news-list{
  max-width:880px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
}
.news-card{
  display:flex;
  align-items:center;
  gap:24px;
  padding:28px 8px;
  border-bottom:1px solid var(--border);
  transition:all .2s ease;
  cursor:pointer;
}
.news-card:hover{
  background:var(--bg);
  padding-left:16px;
  padding-right:16px;
}
.news-card:first-child{border-top:1px solid var(--border)}
.badge{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-light);
  padding:4px 12px;
  border-radius:var(--radius-pill);
  white-space:nowrap;
  flex-shrink:0;
}
.news-info{
  flex:1;
  min-width:0;
}
.news-info h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  margin-bottom:4px;
  transition:color .2s;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.news-card:hover .news-info h3{color:var(--primary)}
.news-info p{
  font-size:14px;
  color:var(--text-secondary);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  line-height:24px;
}
.news-date{
  font-size:13px;
  color:var(--text-placeholder);
  white-space:nowrap;
  flex-shrink:0;
}
.news-empty{
  text-align:center;
  padding:64px 0;
  color:var(--text-placeholder);
  font-size:16px;
}
/* ========== CTA ========== */
.cta-band{
  background:var(--dark);
  padding:72px 0;
  text-align:center;
  border-top:1px solid rgba(255,255,255,.08);
}
.cta-band h2{
  color:#fff;
  font-size:32px;
  line-height:44px;
  margin-bottom:12px;
}
.cta-band p{
  color:var(--dark-text);
  font-size:16px;
  margin-bottom:32px;
}
.cta-buttons{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
/* ========== 页脚 ========== */
.site-footer{
  background:#0C1412;
  padding:64px 0 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{
  color:#fff;
  margin-bottom:16px;
}
.footer-brand .logo-dot{background:var(--accent)}
.footer-brand p{
  font-size:14px;
  line-height:26px;
  color:var(--dark-text);
  max-width:260px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:20px;
  letter-spacing:.02em;
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul li a{
  font-size:14px;
  color:var(--dark-text);
  transition:color .2s;
}
.footer-col ul li a:hover{color:var(--accent)}
.footer-contact li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14px;
  color:var(--dark-text);
  margin-bottom:14px;
}
.footer-contact .fc-icon{
  color:var(--accent);
  font-size:14px;
  margin-top:3px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:24px 0;
  text-align:center;
  font-size:13px;
  color:rgba(166,176,171,.6);
}
/* ========== 响应式 ========== */
@media(max-width:1024px){
  :root{--section-pad:80px}
  .hero-inner{gap:40px}
  .hero-content h1{font-size:40px;line-height:54px}
  .case-list{grid-template-columns:1fr 1fr}
  .case-card:last-child{grid-column:1/-1}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-actions .btn-outline{display:none}
  .menu-toggle{display:flex}
  .hero{padding:64px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .hero-media .img-frame img{height:260px}
  .hero-vertical{display:none}
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-item{border-left:none;border-bottom:1px solid rgba(255,255,255,.08)}
  .stat-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.08)}
  .case-list{grid-template-columns:1fr}
  .case-card:last-child{grid-column:auto}
  .service-item{width:100%!important;align-self:flex-start!important}
  .service-item{flex-direction:column;gap:16px}
  .service-num{font-size:36px}
  .contact-grid{grid-template-columns:1fr;gap:48px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .news-card{flex-wrap:wrap;gap:12px}
  .news-info{width:100%}
  .news-info h3,.news-info p{white-space:normal}
  .news-date{width:100%}
  .cta-band h2{font-size:26px}
  :root{--section-pad:64px}
}
@media(max-width:520px){
  .stats-grid{grid-template-columns:1fr}
  .stat-item{border-right:none!important}
  .hero-content h1{font-size:30px;line-height:42px}
  .btn{padding:10px 18px;font-size:14px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .cta-buttons{flex-direction:column;align-items:stretch}
  .cta-buttons .btn{width:100%}
}
/* ========== 焦点样式 ========== */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

/* roulang page: category1 */
:root{
  --primary:#12665E;
  --primary-dark:#0C4E48;
  --primary-deep:#0A3F3A;
  --primary-soft:rgba(18,102,94,.06);
  --accent:#B8863A;
  --accent-dark:#9C6F2F;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --dark:#101A18;
  --dark-2:#16241F;
  --line:#E3E0D9;
  --line-dark:rgba(255,255,255,.12);
  --text:#1C2624;
  --text-2:#5A645E;
  --muted:#9AA09C;
  --radius:4px;
  --radius-lg:8px;
  --shadow:0 1px 2px rgba(16,26,24,.05);
  --shadow-lg:0 12px 32px rgba(16,26,24,.08);
  --container:1200px;
  --spacer:96px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:16px;line-height:1.75;color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
ul{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);text-transform:uppercase;margin-bottom:12px}
.section-kicker::before{content:"";width:20px;height:2px;background:var(--accent)}
.section-head.center .section-kicker::after{content:"";width:20px;height:2px;background:var(--accent)}
.section-title{font-size:32px;line-height:1.35;font-weight:700;color:var(--text);letter-spacing:-.01em}
.section-subtitle{font-size:16px;line-height:1.75;color:var(--text-2);margin-top:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:var(--radius);border:1px solid transparent;
  font-size:16px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  transition:all .25s ease;text-align:center;line-height:1.4;
}
.btn:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-lg{padding:16px 36px;font-size:17px}
.btn-sm{padding:8px 20px;font-size:14px}
.tag{display:inline-flex;align-items:center;padding:4px 14px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:600;letter-spacing:.02em}
.tag-gold{background:rgba(184,134,58,.1);color:var(--accent)}
.tag-dark{background:rgba(255,255,255,.1);color:#D0D8D4}
/* Header */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(246,244,239,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);height:72px;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.logo-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);position:relative;flex-shrink:0}
.logo-dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--primary);opacity:.3}
.logo:hover{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:26px 0;letter-spacing:.01em;transition:color .2s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--primary);
}
.nav-cta{margin-left:8px}
.header-burger{display:none;width:40px;height:40px;background:none;border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;position:relative}
.header-burger span{display:block;width:18px;height:2px;background:var(--text);margin:4px auto;transition:all .3s ease;border-radius:2px}
.mobile-menu{
  display:none;position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--bg);
  z-index:99;padding:24px;flex-direction:column;gap:4px;border-top:1px solid var(--line);
}
.mobile-menu.open{display:flex}
.mobile-menu a{
  padding:16px 4px;font-size:17px;font-weight:500;color:var(--text);border-bottom:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;
}
.mobile-menu a.active{color:var(--primary);font-weight:600}
.mobile-menu .btn{justify-content:center;margin-top:20px}
/* Hero */
.hero{position:relative;padding:88px 0 96px;border-bottom:1px solid var(--line);overflow:hidden}
.hero-bg{position:absolute;top:0;right:0;width:52%;height:100%;object-fit:cover;opacity:.5;mask-image:linear-gradient(to left,transparent,#000 30%);-webkit-mask-image:linear-gradient(to left,transparent,#000 30%)}
.hero-vertical{position:absolute;left:24px;top:50%;transform:translateY(-50%);writing-mode:vertical-rl;font-size:12px;letter-spacing:.4em;color:var(--line);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center;position:relative;z-index:1}
.hero-copy{max-width:640px;padding-left:24px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);padding:6px 18px;border-radius:999px;font-size:13px;font-weight:600;color:var(--primary);margin-bottom:24px;box-shadow:var(--shadow)}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-title{font-size:48px;line-height:1.2;font-weight:700;letter-spacing:-.02em;color:var(--text)}
.hero-title em{font-style:normal;color:var(--primary)}
.hero-desc{font-size:18px;line-height:1.75;color:var(--text-2);margin-top:24px;max-width:520px}
.hero-actions{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.hero-quick{display:flex;gap:32px;margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.hq-item .hq-num{font-size:28px;font-weight:700;color:var(--primary);line-height:1.2}
.hq-item .hq-label{font-size:13px;color:var(--muted);margin-top:4px}
.hero-visual{position:relative}
.hero-frame{position:relative;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.hero-frame img{width:100%;height:380px;object-fit:cover}
.hero-card{
  position:absolute;left:-24px;bottom:24px;background:var(--card);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);border:1px solid var(--line);padding:16px 20px;display:flex;align-items:center;gap:14px;
}
.hero-card .hc-icon{width:36px;height:36px;border-radius:8px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:16px;flex-shrink:0}
.hero-card .hc-title{font-size:13px;font-weight:600;color:var(--text)}
.hero-card .hc-sub{font-size:12px;color:var(--muted)}
/* Split blocks */
.split-block{padding:96px 0}
.split-block:nth-child(odd){background:var(--card);border-bottom:1px solid var(--line)}
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.split-grid.reverse .split-media{order:2}
.split-media{position:relative}
.split-media img{width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--line)}
.split-badge{position:absolute;top:-14px;left:-14px;display:inline-flex;align-items:center;padding:6px 16px;background:var(--primary);color:#fff;border-radius:999px;font-size:13px;font-weight:600;box-shadow:var(--shadow-lg)}
.split-copy h3{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:16px;color:var(--text)}
.split-copy p{color:var(--text-2);margin-bottom:16px}
.split-list{margin-top:20px;display:grid;gap:12px}
.split-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.split-list li::before{content:"";flex-shrink:0;width:18px;height:18px;border:1px solid var(--primary);border-radius:50%;position:relative;margin-top:5px}
.split-list li::after{content:"✓";position:absolute;font-size:11px;color:var(--primary);margin-left:-15px;margin-top:4px;font-weight:700}
/* Metrics band */
.metrics-band{background:var(--dark);color:#fff;padding:80px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric{text-align:center;padding:0 24px;position:relative}
.metric + .metric::before{content:"";position:absolute;left:0;top:20%;bottom:20%;width:1px;background:rgba(255,255,255,.12)}
.metric-num{font-size:48px;line-height:1.1;font-weight:700;color:var(--accent);letter-spacing:-.02em}
.metric-label{font-size:14px;color:#A6B0AB;margin-top:8px}
.metric-note{font-size:13px;color:rgba(255,255,255,.4);margin-top:4px}
/* Scenario cards */
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:box-shadow .3s ease,transform .3s ease;display:flex;flex-direction:column;
}
.scenario-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.scenario-cover{position:relative;aspect-ratio:16/10;overflow:hidden}
.scenario-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scenario-card:hover .scenario-cover img{transform:scale(1.04)}
.scenario-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(16,26,24,.15),transparent 60%)}
.scenario-body{padding:24px;display:flex;flex-direction:column;flex:1}
.scenario-body h3{font-size:18px;font-weight:600;color:var(--text);margin-bottom:8px}
.scenario-body p{font-size:14px;line-height:1.7;color:var(--text-2);flex:1}
.scenario-foot{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.scenario-result{font-size:13px;font-weight:600;color:var(--primary)}
.scenario-link{font-size:14px;color:var(--text-2);transition:color .2s}
.scenario-link:hover{color:var(--primary)}
/* Process timeline */
.process-band{background:var(--card);border-bottom:1px solid var(--line)}
.timeline{max-width:820px;margin:0 auto;position:relative}
.timeline::before{content:"";position:absolute;left:20px;top:0;bottom:0;width:1px;background:var(--line)}
.timeline-item{position:relative;padding-left:64px;padding-bottom:48px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{position:absolute;left:12px;top:4px;width:17px;height:17px;border-radius:50%;background:var(--card);border:3px solid var(--primary);z-index:1}
.timeline-item.done .timeline-dot{background:var(--primary)}
.timeline-item.done .timeline-dot::after{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--accent)}
.timeline-num{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.05em}
.timeline-item h3{font-size:20px;font-weight:600;color:var(--text);margin:6px 0}
.timeline-item p{font-size:15px;color:var(--text-2);line-height:1.7}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 0;background:none;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-item.active .faq-q{color:var(--primary)}
.faq-toggle{
  width:28px;height:28px;border-radius:50%;border:1px solid var(--line);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;transition:all .3s ease;font-size:16px;
}
.faq-item.active .faq-toggle{transform:rotate(45deg);border-color:var(--primary);background:var(--primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;font-size:15px;line-height:1.75;color:var(--text-2)}
.faq-a-inner{padding-bottom:24px}
/* CTA */
.cta-band{background:var(--primary-deep);position:relative;overflow:hidden;padding:88px 0}
.cta-band::before{content:"";position:absolute;right:0;top:0;width:40%;height:100%;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.15}
.cta-band::after{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(to right,var(--primary-deep) 40%,rgba(10,63,58,.7))}
.cta-inner{position:relative;z-index:1;max-width:640px}
.cta-inner h2{font-size:36px;line-height:1.3;font-weight:700;color:#fff;margin-bottom:16px}
.cta-inner h2 em{font-style:normal;color:#E0B36A}
.cta-inner p{color:rgba(255,255,255,.7);font-size:17px;margin-bottom:32px}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}
/* Footer */
.site-footer{background:var(--dark);color:#A6B0AB;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid var(--line-dark)}
.footer-brand .logo{color:#fff;font-size:20px}
.footer-brand p{font-size:14px;line-height:1.7;margin-top:16px;color:#87918C;max-width:280px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:#87918C;font-size:14px;transition:color .2s}
.footer-col ul li a:hover{color:#fff}
.footer-contact li{font-size:14px;display:flex;align-items:flex-start;gap:10px;color:#87918C}
.fc-icon{color:var(--accent);font-style:normal}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:24px 0;font-size:13px;color:#5A645E}
.footer-links{display:flex;gap:24px}
.footer-links a{color:#5A645E;font-size:13px}
.footer-links a:hover{color:#fff}
/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
/* Responsive */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-bg{width:100%;opacity:.25}
  .hero-vertical{display:none}
  .hero-copy{padding-left:0}
  .split-grid{grid-template-columns:1fr;gap:40px}
  .split-grid.reverse .split-media{order:0}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .metric:nth-child(3)::before{display:none}
  .metric:nth-child(n+3){border-top:1px solid rgba(255,255,255,.08);padding-top:32px}
  .scenario-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:768px){
  :root{--spacer:64px}
  .section{padding:64px 0}
  .nav-links,.nav-cta{display:none}
  .header-burger{display:block}
  .hero{padding:56px 0 64px}
  .hero-title{font-size:36px;line-height:1.25}
  .hero-quick{flex-wrap:wrap;gap:20px}
  .hero-frame img{height:240px}
  .hero-card{left:12px;bottom:12px}
  .section-title{font-size:26px}
  .split-block{padding:64px 0}
  .split-copy h3{font-size:24px}
  .metric-num{font-size:36px}
  .cta-inner h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:12px;align-items:flex-start}
}
@media (max-width:480px){
  .metrics-grid{grid-template-columns:1fr}
  .metric::before{display:none!important}
  .metric{padding:20px 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .metric:last-child{border-bottom:none}
  .hero-actions .btn{flex:1}
  .hero-quick{flex-direction:column;gap:16px}
  .timeline-item{padding-left:48px}
  .timeline::before{left:16px}
  .timeline-dot{left:9px}
}

/* roulang page: article */
:root {
  --primary: #12665E;
  --primary-dark: #0C4E48;
  --accent: #B8863A;
  --bg: #F6F4EF;
  --card: #FFFFFF;
  --dark: #101A18;
  --border: #E3E0D9;
  --text: #1C2624;
  --text-weak: #5A645E;
  --placeholder: #9AA09C;
  --radius: 4px;
  --shadow: 0 1px 2px rgba(16,26,24,.05);
  --shadow-hover: 0 12px 32px rgba(16,26,24,.08);
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .25s ease;
}

button,
input,
textarea {
  font-family: var(--font);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  border-top: 1px solid var(--border);
  height: 72px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text);
  white-space: nowrap;
}

.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  position: relative;
  font-size: 16px;
  color: var(--text-weak);
  padding: 26px 0 22px;
  line-height: 1;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.active {
  color: var(--text);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .02em;
  padding: 12px 28px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease, color .25s ease, box-shadow .25s ease, transform .25s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(18,102,94,.04);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.4);
}

.btn-outline:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255,255,255,.06);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
}

.btn-block {
  width: 100%;
}

.btn-login {
  padding: 10px 24px;
  font-size: 15px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-weak);
}

.breadcrumb a {
  color: var(--text-weak);
}

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

.breadcrumb .bc-current {
  color: var(--placeholder);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.breadcrumb .bc-sep {
  color: var(--border);
  font-size: 12px;
}

/* ===== Article Hero ===== */
.article-hero {
  background: var(--bg);
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.article-hero-inner {
  max-width: 780px;
  margin: 0 auto;
}

.article-tag {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(18,102,94,.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 999px;
  margin-bottom: 20px;
}

.article-hero h1 {
  font-size: 40px;
  line-height: 56px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 18px;
  letter-spacing: -.01em;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: var(--text-weak);
  font-size: 14px;
}

.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== Article Body ===== */
.article-section {
  background: var(--card);
  padding: 56px 0 72px;
}

.article-container {
  max-width: 720px;
  margin: 0 auto;
}

.article-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  word-break: break-word;
}

.article-body p {
  margin: 1.5em 0;
}

.article-body h2 {
  font-size: 30px;
  line-height: 42px;
  font-weight: 700;
  color: var(--text);
  margin: 1.2em 0 .6em;
  letter-spacing: -.01em;
}

.article-body h3 {
  font-size: 21px;
  line-height: 32px;
  font-weight: 600;
  color: var(--text);
  margin: 1.2em 0 .6em;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5em;
  margin: 1.5em 0;
}

.article-body li {
  margin: .45em 0;
}

.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(18,102,94,.05);
  padding: 14px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-weak);
  margin: 1.5em 0;
}

.article-body blockquote p {
  margin: .4em 0;
}

.article-body img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1.6em 0;
  border: 1px solid var(--border);
}

.article-body pre {
  background: var(--dark);
  color: #D7E0DC;
  padding: 18px 22px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.65;
  margin: 1.6em 0;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
}

.article-body pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

.article-body code {
  background: rgba(18,102,94,.09);
  color: var(--primary-dark);
  padding: 2px 7px;
  border-radius: 3px;
  font-size: .9em;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 15px;
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: rgba(18,102,94,.06);
  font-weight: 600;
  color: var(--text);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

/* ===== Article Return ===== */
.article-return {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
}

.article-return a {
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-return a:hover {
  color: var(--primary);
}

.article-return .btn-text {
  font-weight: 500;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 72px 24px;
}

.empty-state p {
  font-size: 18px;
  color: var(--text-weak);
  margin-bottom: 24px;
}

.empty-state .btn {
  display: inline-flex;
}

/* ===== Related Section ===== */
.related-section {
  background: var(--bg);
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: 40px;
  max-width: 560px;
}

.section-head .section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: 32px;
  line-height: 44px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -.01em;
}

.section-head p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 26px;
}

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

.related-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow .3s ease, transform .3s ease, border-color .3s ease;
}

.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(18,102,94,.35);
}

.related-card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--border);
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

.related-card:hover .related-card-img img {
  transform: scale(1.03);
}

.related-card-body {
  padding: 20px 22px 22px;
}

.tag {
  display: inline-block;
  padding: 4px 13px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 999px;
  background: rgba(18,102,94,.08);
  color: var(--primary);
}

.related-card-body h3 {
  font-size: 17px;
  line-height: 27px;
  font-weight: 600;
  color: var(--text);
  margin: 12px 0 8px;
  transition: color .25s ease;
}

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

.related-card-body p {
  font-size: 14px;
  line-height: 24px;
  color: var(--text-weak);
  margin: 0 0 14px;
}

.related-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--placeholder);
}

.related-card-footer .read-more {
  color: var(--primary);
  font-weight: 500;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .3s ease, transform .3s ease;
}

.related-card:hover .related-card-footer .read-more {
  opacity: 1;
  transform: translateX(0);
}

/* ===== CTA Section ===== */
.cta-section {
  background: var(--dark);
  padding: 84px 0;
  color: #fff;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.tag-accent {
  background: rgba(184,134,58,.15);
  color: #D9B46C;
}

.cta-info h2 {
  font-size: 32px;
  line-height: 44px;
  font-weight: 700;
  margin: 18px 0 14px;
  letter-spacing: -.01em;
}

.cta-info p {
  color: #A6B0AB;
  font-size: 15px;
  line-height: 27px;
  max-width: 400px;
}

.cta-contacts {
  margin-top: 30px;
  display: grid;
  gap: 8px;
}

.cta-contacts p {
  font-size: 14px;
  line-height: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.cta-contacts .cc-icon {
  color: var(--accent);
  font-size: 14px;
  width: 20px;
  text-align: center;
}

.cta-form {
  display: grid;
  gap: 22px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  padding: 36px;
  border-radius: 6px;
}

.cta-form label {
  display: none;
}

.cta-form input,
.cta-form textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,.25);
  padding: 10px 4px;
  color: #fff;
  font-size: 15px;
  outline: none;
  border-radius: 0;
  transition: border-color .3s ease;
  resize: vertical;
}

.cta-form input::placeholder,
.cta-form textarea::placeholder {
  color: rgba(255,255,255,.45);
}

.cta-form input:focus,
.cta-form textarea:focus {
  border-bottom-color: var(--accent);
}

.cta-form .btn {
  margin-top: 4px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 72px 0 0;
  color: #C8D0CC;
}

.site-footer .logo {
  color: #fff;
}

.site-footer .logo-dot {
  background: var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 26px;
  color: #A6B0AB;
  margin-top: 18px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-col ul li a {
  color: #A6B0AB;
  font-size: 14px;
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-contact li {
  color: #A6B0AB;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.fc-icon {
  color: var(--accent);
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #8F9A95;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-grid {
    gap: 40px;
  }

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--card);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
    transform: translateY(-140%);
    opacity: 0;
    transition: transform .3s ease, opacity .3s ease;
    pointer-events: none;
  }

  .nav-open .nav-links {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 14px 0;
    font-size: 17px;
    border-bottom: 1px solid var(--border);
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    color: var(--primary);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .btn-login {
    display: none;
  }

  .article-hero {
    padding: 48px 0 36px;
  }

  .article-hero h1 {
    font-size: 32px;
    line-height: 46px;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 14px 20px;
  }

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

  .cta-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .cta-form {
    padding: 28px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .article-hero h1 {
    font-size: 28px;
    line-height: 40px;
  }

  .article-body {
    font-size: 15px;
    line-height: 1.7;
  }

  .article-body h2 {
    font-size: 24px;
    line-height: 34px;
  }

  .article-body h3 {
    font-size: 18px;
    line-height: 28px;
  }

  .related-section {
    padding: 60px 0;
  }

  .cta-section {
    padding: 60px 0;
  }

  .cta-info h2 {
    font-size: 26px;
    line-height: 36px;
  }

  .article-return {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #12665E;
  --primary-dark: #0C4E48;
  --accent: #B8863A;
  --bg: #F6F4EF;
  --card: #FFFFFF;
  --dark: #101A18;
  --dark-2: #1B2725;
  --dark-text: #A6B0AB;
  --dark-border: rgba(255,255,255,.12);
  --border: #E3E0D9;
  --text: #1C2624;
  --text-2: #5A645E;
  --text-3: #9AA09C;
  --radius: 4px;
  --radius-lg: 8px;
  --radius-pill: 999px;
  --shadow-1: 0 1px 2px rgba(16,26,24,.05);
  --shadow-2: 0 12px 32px rgba(16,26,24,.08);
  --container: 1200px;
  --read: 720px;
  --header-h: 72px;
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family: system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif; background:var(--bg); color:var(--text); line-height:1.75; -webkit-font-smoothing:antialiased; }
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
ul, ol { list-style:none; }
button { font-family:inherit; cursor:pointer; border:none; background:none; }
.container { max-width:var(--container); margin:0 auto; padding:0 24px; }

/* Header */
.site-header { position:sticky; top:0; z-index:100; background:#fff; border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.header-inner { max-width:var(--container); margin:0 auto; padding:0 24px; height:var(--header-h); display:flex; align-items:center; justify-content:space-between; gap:24px; }
.logo { display:inline-flex; align-items:center; gap:10px; font-size:20px; font-weight:700; color:var(--text); letter-spacing:-0.01em; }
.logo-dot { width:8px; height:8px; background:var(--primary); border-radius:50%; flex-shrink:0; }
.nav-links { display:flex; align-items:center; gap:32px; }
.nav-link { position:relative; font-size:15px; color:var(--text-2); transition:color .2s; padding:6px 0; }
.nav-link:hover { color:var(--primary); }
.nav-link.active { color:var(--text); font-weight:600; }
.nav-link.active::after { content:''; position:absolute; left:50%; bottom:-4px; transform:translateX(-50%); width:4px; height:4px; border-radius:50%; background:var(--primary); }
.nav-cta { display:inline-block; padding:8px 22px; border:1px solid var(--border); border-radius:var(--radius); background:#fff; color:var(--text); font-size:15px; font-weight:600; line-height:1.4; transition:all .2s; white-space:nowrap; }
.nav-cta:hover { border-color:var(--primary); color:var(--primary); background:rgba(18,102,94,.04); }
.menu-toggle { display:none; flex-direction:column; justify-content:center; align-items:center; gap:5px; width:40px; height:40px; border:1px solid var(--border); border-radius:var(--radius); background:#fff; }
.menu-toggle span { width:18px; height:2px; background:var(--text); border-radius:2px; transition:transform .3s, opacity .3s; }
.menu-toggle.open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity:0; }
.menu-toggle.open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* Page Hero */
.page-hero { border-bottom:1px solid var(--border); background:var(--bg); }
.hero-inner { max-width:var(--container); margin:0 auto; padding:56px 24px 64px; display:grid; grid-template-columns:1.2fr .8fr; gap:64px; align-items:center; }
.breadcrumb { font-size:14px; color:var(--text-3); margin-bottom:20px; display:flex; flex-wrap:wrap; gap:6px; }
.breadcrumb a { color:var(--text-2); transition:color .2s; }
.breadcrumb a:hover { color:var(--primary); }
.breadcrumb .sep { opacity:.6; }
.hero-tag { display:inline-block; padding:4px 14px; border:1px solid var(--border); border-radius:var(--radius-pill); font-size:13px; color:var(--text-2); background:#fff; margin-bottom:20px; letter-spacing:.04em; }
.page-hero h1 { font-size:44px; line-height:1.35; font-weight:700; letter-spacing:-0.02em; }
.page-hero h1 .accent { color:var(--primary); }
.hero-sub { font-size:17px; line-height:1.75; color:var(--text-2); margin-top:16px; max-width:520px; }
.hero-actions { display:flex; gap:16px; margin-top:32px; flex-wrap:wrap; }
.btn { display:inline-flex; align-items:center; justify-content:center; padding:12px 28px; border-radius:var(--radius); font-size:16px; font-weight:600; letter-spacing:.02em; transition:all .25s; border:1px solid transparent; line-height:1.4; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-dark); color:#fff; transform:translateY(-1px); box-shadow:var(--shadow-2); }
.btn-secondary { background:#fff; border-color:var(--border); color:var(--text); }
.btn-secondary:hover { border-color:var(--primary); color:var(--primary); background:rgba(18,102,94,.04); }
.hero-media { border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; background:var(--card); box-shadow:var(--shadow-1); }
.hero-media img { width:100%; height:320px; object-fit:cover; }

/* TOC Layout */
.toc-layout { max-width:var(--container); margin:0 auto; padding:80px 24px 96px; display:grid; grid-template-columns:240px 1fr; gap:64px; align-items:start; }
.toc-wrap { position:sticky; top:calc(var(--header-h) + 24px); border-top:1px solid var(--border); padding-top:20px; }
.toc-label { font-size:13px; color:var(--text-3); letter-spacing:.08em; margin-bottom:14px; text-transform:uppercase; }
.toc-list li { margin-bottom:6px; }
.toc-link { display:block; padding:8px 14px; border-left:2px solid var(--border); font-size:14px; color:var(--text-2); transition:all .2s; line-height:1.5; }
.toc-link:hover { border-left-color:var(--primary); color:var(--primary); background:rgba(18,102,94,.03); }
.toc-link.active { border-left-color:var(--primary); color:var(--primary); font-weight:600; background:rgba(18,102,94,.04); }

/* Content Blocks */
.content-main { min-width:0; }
.content-block { scroll-margin-top:100px; margin-bottom:72px; }
.content-block:last-of-type { margin-bottom:0; }
.block-label { font-size:13px; color:var(--accent); font-weight:700; letter-spacing:.08em; margin-bottom:10px; text-transform:uppercase; }
.content-block h2 { font-size:32px; line-height:1.4; font-weight:700; letter-spacing:-0.01em; margin-bottom:12px; }
.block-intro { font-size:17px; line-height:1.75; color:var(--text-2); max-width:640px; }

/* Overview */
.overview-grid { display:grid; grid-template-columns:1fr 1fr; gap:44px; align-items:center; margin-top:32px; }
.overview-text p { margin-bottom:14px; color:var(--text-2); font-size:15px; line-height:1.75; }
.overview-text a { color:var(--primary); font-weight:500; border-bottom:1px solid rgba(18,102,94,.3); transition:border-color .2s; }
.overview-text a:hover { border-bottom-color:var(--primary); }
.overview-stats { display:grid; grid-template-columns:1fr 1fr; gap:24px 20px; margin-top:24px; border-top:1px solid var(--border); padding-top:24px; }
.stat-num { font-size:30px; font-weight:700; color:var(--text); line-height:1.2; }
.stat-num small { font-size:16px; color:var(--text-3); font-weight:400; margin-left:2px; }
.stat-label { font-size:14px; color:var(--text-2); margin-top:2px; }
.overview-media img { border-radius:var(--radius-lg); border:1px solid var(--border); }

/* Capabilities */
.cap-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:32px; }
.cap-card { background:var(--card); border:1px solid var(--border); border-radius:var(--radius-lg); padding:28px; transition:all .3s; }
.cap-card:hover { box-shadow:var(--shadow-2); border-color:var(--primary); transform:translateY(-2px); }
.cap-num { font-size:13px; color:var(--accent); font-weight:700; font-family:ui-monospace,SFMono-Regular,Menlo,monospace; margin-bottom:10px; letter-spacing:.04em; }
.cap-card h3 { font-size:18px; font-weight:600; margin-bottom:8px; }
.cap-card p { font-size:15px; line-height:1.7; color:var(--text-2); }

/* Timeline */
.timeline { margin-top:36px; }
.timeline-item { display:grid; grid-template-columns:52px 1fr; gap:20px; padding-bottom:40px; position:relative; }
.timeline-item:last-child { padding-bottom:0; }
.timeline-item::before { content:''; position:absolute; left:25px; top:48px; bottom:0; width:1px; background:var(--border); }
.timeline-item:last-child::before { display:none; }
.tl-dot { width:52px; height:52px; border-radius:50%; background:#fff; border:1px solid var(--border); display:flex; align-items:center; justify-content:center; font-size:15px; font-weight:700; color:var(--primary); z-index:1; box-shadow:var(--shadow-1); }
.timeline-item.highlight .tl-dot { background:var(--primary); border-color:var(--primary); color:#fff; }
.tl-body h3 { font-size:18px; font-weight:600; margin-bottom:6px; }
.tl-body p { font-size:15px; color:var(--text-2); line-height:1.75; max-width:560px; }

/* Scenarios */
.scenario-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:32px; }
.scenario-card.featured { grid-column:1 / -1; display:grid; grid-template-columns:1fr 1fr; border:1px solid var(--border); border-radius:var(--radius-lg); background:#fff; overflow:hidden; transition:all .3s; }
.scenario-card { border:1px solid var(--border); border-radius:var(--radius-lg); background:#fff; overflow:hidden; transition:all .3s; }
.scenario-card:hover, .scenario-card.featured:hover { box-shadow:var(--shadow-2); border-color:var(--primary); transform:translateY(-2px); }
.scenario-media { overflow:hidden; }
.scenario-media img { width:100%; height:100%; min-height:200px; object-fit:cover; transition:transform .4s ease; }
.scenario-card:hover .scenario-media img, .scenario-card.featured:hover .scenario-media img { transform:scale(1.03); }
.scenario-body { padding:28px; display:flex; flex-direction:column; justify-content:center; }
.scenario-body .tag { display:inline-block; align-self:flex-start; padding:3px 12px; border:1px solid var(--border); border-radius:var(--radius-pill); font-size:12px; color:var(--text-2); margin-bottom:14px; background:var(--bg); }
.scenario-body h3 { font-size:20px; font-weight:600; margin-bottom:8px; }
.scenario-body p { font-size:15px; color:var(--text-2); line-height:1.7; }

/* FAQ */
.faq-list { margin-top:28px; border-top:1px solid var(--border); }
.faq-item { border-bottom:1px solid var(--border); }
.faq-q { width:100%; display:flex; justify-content:space-between; align-items:center; gap:20px; padding:22px 0; background:none; border:none; font-size:16px; font-weight:500; color:var(--text); text-align:left; transition:color .2s; font-family:inherit; }
.faq-q:hover { color:var(--primary); }
.faq-icon { width:28px; height:28px; border:1px solid var(--border); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:18px; color:var(--text-2); transition:all .3s; flex-shrink:0; line-height:1; }
.faq-item.open .faq-icon { transform:rotate(45deg); background:var(--primary); border-color:var(--primary); color:#fff; }
.faq-a { max-height:0; overflow:hidden; transition:max-height .35s ease; }
.faq-a-inner { padding-bottom:22px; font-size:15px; color:var(--text-2); line-height:1.75; max-width:640px; }

/* CTA */
.cta-block { margin-top:72px; background:var(--dark); border-radius:var(--radius-lg); padding:56px 48px; text-align:center; color:#fff; position:relative; overflow:hidden; }
.cta-block::before { content:''; position:absolute; top:0; right:0; width:200px; height:200px; border-radius:50%; background:rgba(184,134,58,.08); transform:translate(60px,-60px); }
.cta-block h2 { color:#fff; font-size:28px; font-weight:700; letter-spacing:-0.01em; }
.cta-block p { color:var(--dark-text); margin:14px auto 32px; max-width:480px; font-size:16px; }
.cta-actions { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.cta-actions .btn-primary { background:var(--accent); color:#fff; }
.cta-actions .btn-primary:hover { background:#A5712E; }
.cta-actions .btn-ghost { background:transparent; border-color:rgba(255,255,255,.25); color:#fff; }
.cta-actions .btn-ghost:hover { border-color:#fff; background:rgba(255,255,255,.06); }

/* Footer */
.site-footer { background:var(--dark); color:var(--dark-text); }
.footer-grid { max-width:var(--container); margin:0 auto; padding:64px 24px 40px; display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:48px; }
.footer-brand .logo { color:#fff; margin-bottom:14px; }
.footer-brand .logo .logo-dot { background:var(--accent); }
.footer-brand p { font-size:14px; line-height:1.75; max-width:300px; color:var(--dark-text); }
.footer-col h4 { color:#fff; font-size:15px; font-weight:600; margin-bottom:16px; letter-spacing:.02em; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul a { font-size:14px; color:var(--dark-text); transition:color .2s; }
.footer-col ul a:hover { color:#fff; }
.footer-contact li { font-size:14px; display:flex; align-items:center; gap:8px; margin-bottom:12px; }
.fc-icon { color:var(--accent); font-style:normal; }
.footer-bottom { max-width:var(--container); margin:0 auto; padding:24px; border-top:1px solid var(--dark-border); font-size:13px; color:rgba(255,255,255,.4); text-align:center; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns:1fr; gap:40px; }
  .hero-media img { height:260px; }
  .toc-layout { grid-template-columns:1fr; gap:40px; padding:56px 24px 72px; }
  .toc-wrap { position:static; border-top:none; padding-top:0; }
  .toc-label { display:none; }
  .toc-list { display:flex; gap:8px; overflow-x:auto; padding-bottom:8px; -webkit-overflow-scrolling:touch; }
  .toc-list li { margin-bottom:0; flex-shrink:0; }
  .toc-link { border-left:none; border-radius:var(--radius-pill); border:1px solid var(--border); background:#fff; padding:6px 16px; white-space:nowrap; }
  .toc-link.active { border-color:var(--primary); background:rgba(18,102,94,.05); }
  .cap-grid { grid-template-columns:1fr; }
}
@media (max-width: 768px) {
  .site-header { position:fixed; top:0; left:0; right:0; }
  body { padding-top:var(--header-h); }
  .header-inner { padding:0 18px; }
  .nav-links { position:fixed; top:var(--header-h); left:0; right:0; background:#fff; flex-direction:column; align-items:stretch; gap:0; padding:12px 24px 20px; border-bottom:1px solid var(--border); box-shadow:var(--shadow-2); transform:translateY(-120%); transition:transform .3s ease; z-index:99; }
  .nav-links.open { transform:translateY(0); }
  .nav-link { padding:14px 0; font-size:16px; border-bottom:1px solid var(--border); }
  .nav-link.active::after { display:none; }
  .nav-link.active { color:var(--primary); }
  .nav-cta { margin-top:16px; text-align:center; }
  .menu-toggle { display:flex; }
  .hero-inner { padding:40px 18px 48px; gap:32px; }
  .page-hero h1 { font-size:32px; line-height:1.4; }
  .hero-sub { font-size:16px; }
  .hero-media img { height:220px; }
  .toc-layout { padding:40px 18px 64px; }
  .overview-grid { grid-template-columns:1fr; gap:32px; }
  .overview-stats { grid-template-columns:1fr 1fr; }
  .scenario-grid { grid-template-columns:1fr; }
  .scenario-card.featured { grid-column:auto; grid-template-columns:1fr; }
  .scenario-media img { min-height:180px; }
  .content-block h2 { font-size:26px; }
  .footer-grid { grid-template-columns:1fr 1fr; padding:48px 18px 32px; gap:36px; }
  .footer-brand { grid-column:1 / -1; }
  .cta-block { padding:40px 24px; }
  .cta-block h2 { font-size:24px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns:1fr; gap:28px; }
  .footer-brand { grid-column:auto; }
  .hero-actions .btn { width:100%; }
  .overview-stats { grid-template-columns:1fr 1fr; gap:16px; }
  .stat-num { font-size:24px; }
  .cta-actions .btn { width:100%; }
  .btn { padding:12px 20px; }
}
@media (max-width: 480px) {
  .page-hero h1 { font-size:28px; }
  .content-block h2 { font-size:24px; }
  .hero-sub { font-size:15px; }
  .scenario-body { padding:20px; }
  .cap-card { padding:22px; }
  .timeline-item { grid-template-columns:44px 1fr; gap:16px; }
  .tl-dot { width:44px; height:44px; font-size:13px; }
  .timeline-item::before { left:21px; }
}