/* roulang page: index */
:root{
  --primary:#0a1628;
  --primary-deep:#060e1a;
  --primary-light:#13233c;
  --accent:#c8a96a;
  --accent-light:#e6ce9c;
  --accent-dark:#a88848;
  --bg:#f6f4ef;
  --bg-alt:#ffffff;
  --bg-dark:#0a1628;
  --text:#1c2536;
  --text-weak:#6a7688;
  --border:rgba(10,22,40,.08);
  --border-dark:rgba(255,255,255,.1);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 10px 40px rgba(10,22,40,.08);
  --shadow-lg:0 20px 60px rgba(10,22,40,.14);
  --space-section:96px;
  --font:"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;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .25s}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--text)}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-header{max-width:680px;margin-bottom:52px}
.section-header.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:.12em;
  color:var(--accent-dark);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-kicker::before{
  content:"";
  width:28px;height:1px;
  background:var(--accent);
}
.section-header.center .section-kicker::after{
  content:"";
  width:28px;height:1px;
  background:var(--accent);
}
.section-title{font-size:34px;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.section-sub{font-size:16px;color:var(--text-weak);line-height:1.8}
/* header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.78);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1280px;
  margin:0 auto;
  padding:0 28px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--primary);
  white-space:nowrap;
  display:flex;
  align-items:center;
  gap:10px;
}
.logo-dot{
  width:10px;height:10px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(200,169,106,.2);
}
.main-nav{display:flex;align-items:center;gap:36px}
.main-nav a{
  font-size:14px;
  font-weight:500;
  color:var(--text-weak);
  letter-spacing:.02em;
  position:relative;
  padding:6px 2px;
  transition:color .25s;
}
.main-nav a::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:100%;height:1px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s ease;
}
.main-nav a:hover{
  color:var(--primary);
}
.main-nav a:hover::after,
.main-nav a.active::after{
  transform:scaleX(1);
}
.main-nav a.active{
  color:var(--primary);
  font-weight:600;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary);
  color:#fff;
  font-size:13px;
  font-weight:600;
  padding:10px 20px;
  border-radius:36px;
  border:1px solid transparent;
  transition:all .25s;
  white-space:nowrap;
}
.nav-cta:hover{
  background:var(--primary-light);
  color:#fff;
  box-shadow:0 4px 20px rgba(10,22,40,.2);
  transform:translateY(-1px);
}
.mobile-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  padding:10px;
  background:transparent;
  border:1px solid var(--border);
  border-radius:10px;
  cursor:pointer;
}
.mobile-toggle span{
  display:block;
  width:20px;height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:all .3s;
}
@media(max-width:1024px){
  .main-nav{
    display:none;
    position:absolute;
    top:72px;left:0;right:0;
    background:rgba(255,255,255,.98);
    backdrop-filter:blur(20px);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:16px 28px 24px;
    border-bottom:1px solid var(--border);
    box-shadow:0 20px 40px rgba(10,22,40,.12);
  }
  .main-nav.open{
    display:flex;
  }
  .main-nav a{
    width:100%;
    padding:14px 0;
    font-size:15px;
    border-bottom:1px solid var(--border);
  }
  .main-nav a::after{display:none}
  .main-nav a:last-of-type{border-bottom:none}
  .nav-cta{
    display:inline-flex;
    margin-top:12px;
    width:100%;
    justify-content:center;
  }
  .mobile-toggle{
    display:flex;
  }
}
@media(max-width:520px){
  .header-inner{
    padding:0 18px;
    height:64px;
  }
  .logo{font-size:17px}
}
/* hero */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background:linear-gradient(135deg,rgba(6,14,26,.92),rgba(10,22,40,.78)),url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color:#fff;
  padding:120px 24px;
}
.hero-inner{
  max-width:820px;
  margin:0 auto;
  position:relative;
  z-index:2;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.15);
  border-radius:32px;
  padding:8px 18px;
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.85);
  margin-bottom:24px;
}
.hero-badge i{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 12px rgba(200,169,106,.8);
}
.hero h1{
  font-size:56px;
  font-weight:900;
  letter-spacing:-.03em;
  color:#fff;
  line-height:1.2;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--accent-light),var(--accent));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-desc{
  font-size:18px;
  line-height:1.9;
  color:rgba(255,255,255,.78);
  max-width:620px;
  margin:0 auto 36px;
}
.hero-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  padding:14px 32px;
  border-radius:36px;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .28s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:#0a1628;
  border-color:var(--accent);
}
.btn-primary:hover{
  background:var(--accent-light);
  border-color:var(--accent-light);
  transform:translateY(-2px);
  box-shadow:0 10px 30px rgba(200,169,106,.3);
}
.btn-ghost{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.3);
}
.btn-ghost:hover{
  border-color:rgba(255,255,255,.7);
  background:rgba(255,255,255,.06);
  transform:translateY(-2px);
}
.hero-meta{
  margin-top:44px;
  display:flex;
  justify-content:center;
  gap:32px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.6);
  letter-spacing:.04em;
}
.hero-meta span{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.hero-meta span::before{
  content:"";
  width:4px;height:4px;
  border-radius:50%;
  background:var(--accent);
}
@media(max-width:768px){
  .hero h1{font-size:38px}
  .hero-desc{font-size:16px}
  .hero{padding:90px 20px}
}
@media(max-width:520px){
  .hero h1{font-size:32px}
  .hero-actions{flex-direction:column;width:100%;max-width:320px;margin:0 auto}
  .btn{width:100%}
}
/* intro */
.intro-section{
  background:var(--bg-alt);
  border-bottom:1px solid var(--border);
}
.intro-grid{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:64px;
  align-items:center;
}
.intro-copy h2{
  font-size:30px;
  font-weight:800;
  margin-bottom:18px;
  letter-spacing:-.02em;
}
.intro-copy p{
  color:var(--text-weak);
  margin-bottom:16px;
  line-height:1.9;
}
.intro-points{
  margin-top:26px;
  display:grid;
  gap:14px;
}
.intro-point{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 16px;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  transition:all .25s;
}
.intro-point:hover{
  border-color:var(--accent);
  transform:translateX(4px);
  box-shadow:var(--shadow);
}
.intro-point-icon{
  width:36px;height:36px;
  border-radius:10px;
  background:rgba(200,169,106,.12);
  color:var(--accent-dark);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  flex-shrink:0;
}
.intro-point h4{
  font-size:15px;
  margin-bottom:4px;
}
.intro-point p{
  font-size:13px;
  margin:0;
  color:var(--text-weak);
}
.intro-visual{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.intro-visual img{
  width:100%;
  height:420px;
  object-fit:cover;
}
.intro-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(6,14,26,.35));
}
.intro-visual-caption{
  position:absolute;
  left:20px;bottom:20px;
  z-index:2;
  color:#fff;
  font-size:13px;
  letter-spacing:.08em;
  padding:8px 16px;
  background:rgba(6,14,26,.55);
  border:1px solid rgba(255,255,255,.15);
  border-radius:24px;
  backdrop-filter:blur(8px);
}
@media(max-width:900px){
  .intro-grid{
    grid-template-columns:1fr;
    gap:40px;
  }
  .intro-visual img{height:320px}
}
/* category cards */
.cat-section{
  background:var(--bg);
}
.cat-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
}
.cat-card{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--bg-alt);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  transition:all .3s ease;
}
.cat-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(200,169,106,.35);
}
.cat-card-img{
  width:100%;
  height:260px;
  object-fit:cover;
  display:block;
}
.cat-card-img-wrap{
  position:relative;
  overflow:hidden;
}
.cat-card-img-wrap::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 35%,rgba(6,14,26,.45));
}
.cat-badge{
  position:absolute;
  top:16px;left:16px;
  z-index:2;
  background:rgba(255,255,255,.9);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  padding:5px 14px;
  border-radius:24px;
  backdrop-filter:blur(6px);
}
.cat-body{
  padding:28px 28px 32px;
}
.cat-body h3{
  font-size:21px;
  margin-bottom:8px;
  letter-spacing:-.01em;
}
.cat-body p{
  color:var(--text-weak);
  font-size:14px;
  line-height:1.8;
  margin-bottom:18px;
}
.cat-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent-dark);
  transition:gap .25s;
}
.cat-link:hover{
  gap:14px;
  color:var(--accent-dark);
}
@media(max-width:768px){
  .cat-grid{
    grid-template-columns:1fr;
  }
  .cat-card-img{
    height:220px;
  }
}
/* news list */
.news-section{
  background:var(--bg-alt);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.news-wrap{
  display:grid;
  grid-template-columns:1fr 360px;
  gap:48px;
  align-items:start;
}
.news-list{
  display:grid;
  gap:0;
}
.news-item{
  padding:26px 4px;
  border-bottom:1px solid var(--border);
  transition:all .25s;
  display:block;
}
.news-item:last-child{
  border-bottom:none;
}
.news-item:hover{
  padding-left:12px;
  background:linear-gradient(90deg,rgba(200,169,106,.05),transparent);
}
.news-item-top{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
}
.news-tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--accent-dark);
  background:rgba(200,169,106,.1);
  border:1px solid rgba(200,169,106,.25);
  border-radius:20px;
  padding:3px 12px;
  letter-spacing:.03em;
}
.news-date{
  font-size:13px;
  color:var(--text-weak);
  letter-spacing:.02em;
}
.news-item h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:8px;
  transition:color .2s;
  letter-spacing:-.01em;
}
.news-item:hover h3{
  color:var(--accent-dark);
}
.news-item p{
  font-size:14px;
  color:var(--text-weak);
  line-height:1.8;
  margin-bottom:10px;
}
.news-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--text-weak);
  transition:all .25s;
}
.news-more:hover{
  color:var(--accent-dark);
  gap:10px;
}
.empty-tip{
  padding:48px 24px;
  text-align:center;
  color:var(--text-weak);
  background:var(--bg);
  border-radius:var(--radius);
  border:1px dashed var(--border);
}
.news-side{
  position:sticky;
  top:100px;
  display:grid;
  gap:24px;
}
.side-card{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
}
.side-card h4{
  font-size:17px;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:10px;
}
.side-card h4::before{
  content:"";
  width:4px;height:18px;
  border-radius:2px;
  background:var(--accent);
}
.side-list{
  display:grid;
  gap:14px;
}
.side-list a{
  display:block;
  font-size:14px;
  color:var(--text-weak);
  line-height:1.7;
  padding:8px 0;
  border-bottom:1px dashed var(--border);
  transition:all .2s;
}
.side-list a:hover{
  color:var(--accent-dark);
  padding-left:8px;
}
@media(max-width:960px){
  .news-wrap{
    grid-template-columns:1fr;
  }
  .news-side{
    position:static;
    grid-template-columns:1fr 1fr;
  }
}
@media(max-width:640px){
  .news-side{
    grid-template-columns:1fr;
  }
}
/* stats */
.stats-section{
  position:relative;
  background:linear-gradient(135deg,rgba(6,14,26,.94),rgba(10,22,40,.88)),url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding:84px 0;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.stat-block{
  text-align:center;
  padding:36px 20px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  transition:all .3s;
}
.stat-block:hover{
  background:rgba(255,255,255,.08);
  border-color:rgba(200,169,106,.3);
  transform:translateY(-4px);
}
.stat-num{
  font-size:44px;
  font-weight:900;
  color:var(--accent-light);
  letter-spacing:-.02em;
  margin-bottom:8px;
  line-height:1;
}
.stat-label{
  font-size:14px;
  color:rgba(255,255,255,.68);
  letter-spacing:.06em;
}
@media(max-width:968px){
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media(max-width:520px){
  .stats-grid{
    grid-template-columns:1fr;
  }
  .stat-num{
    font-size:36px;
  }
}
/* features */
.features-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.feature-card{
  background:var(--bg-alt);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 28px;
  transition:all .3s ease;
  position:relative;
  overflow:hidden;
}
.feature-card::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:100%;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-light));
  opacity:0;
  transition:opacity .3s;
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(200,169,106,.3);
}
.feature-card:hover::before{
  opacity:1;
}
.feature-icon{
  width:50px;height:50px;
  border-radius:14px;
  background:rgba(200,169,106,.12);
  color:var(--accent-dark);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  margin-bottom:20px;
}
.feature-card h3{
  font-size:19px;
  margin-bottom:10px;
  letter-spacing:-.01em;
}
.feature-card p{
  font-size:14px;
  color:var(--text-weak);
  line-height:1.8;
}
@media(max-width:968px){
  .features-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media(max-width:640px){
  .features-grid{
    grid-template-columns:1fr;
  }
}
/* faq */
.faq-section{
  background:var(--bg);
}
.faq-list{
  max-width:820px;
  margin:0 auto;
  display:grid;
  gap:16px;
}
.faq-item{
  background:var(--bg-alt);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:border-color .3s;
}
.faq-item:hover{
  border-color:rgba(200,169,106,.35);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 26px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  list-style:none;
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  font-weight:300;
  color:var(--accent);
  transition:transform .3s;
}
.faq-item[open] summary{
  color:var(--accent-dark);
}
.faq-item[open] summary::after{
  transform:rotate(45deg);
}
.faq-item .faq-body{
  padding:0 26px 22px;
  color:var(--text-weak);
  font-size:14px;
  line-height:1.85;
}
/* cta */
.cta-section{
  padding:80px 0;
  background:linear-gradient(135deg,rgba(6,14,26,.94),rgba(10,22,40,.85)),url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
}
.cta-inner{
  max-width:720px;
  margin:0 auto;
  text-align:center;
  color:#fff;
}
.cta-inner h2{
  color:#fff;
  font-size:36px;
  font-weight:800;
  margin-bottom:16px;
  letter-spacing:-.02em;
}
.cta-inner p{
  color:rgba(255,255,255,.76);
  margin-bottom:32px;
  font-size:16px;
  line-height:1.9;
}
.cta-actions{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
@media(max-width:520px){
  .cta-actions{
    flex-direction:column;
    width:100%;
    max-width:300px;
    margin:0 auto;
  }
  .cta-actions .btn{
    width:100%;
  }
}
/* footer */
.site-footer{
  background:var(--primary-deep);
  color:rgba(255,255,255,.65);
  padding:64px 0 32px;
}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:48px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo{
  color:#fff;
  margin-bottom:14px;
}
.footer-brand .logo .logo-dot{
  background:var(--accent);
}
.footer-brand p{
  font-size:14px;
  max-width:300px;
  line-height:1.8;
  color:rgba(255,255,255,.55);
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul{
  display:grid;
  gap:12px;
}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.55);
  transition:color .25s;
}
.footer-col a:hover{
  color:var(--accent-light);
}
.footer-bottom{
  padding-top:28px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.38);
}
@media(max-width:768px){
  .footer-top{
    grid-template-columns:1fr;
    gap:36px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
}

/* roulang page: category1 */
:root {
  --primary: #1a1a2e;
  --primary-light: #16213e;
  --accent: #e94560;
  --accent-hover: #ff6b81;
  --gold: #f5c16c;
  --bg: #f8f7f4;
  --bg-dark: #0f0f1a;
  --bg-card: #ffffff;
  --text-main: #2a2a35;
  --text-weak: #6b7280;
  --border: #e5e7eb;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container: 1200px;
  --space-section: 96px;
  --space-section-md: 64px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
}

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

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--primary);
  white-space: nowrap;
}

.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(233, 69, 96, 0.15);
}

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

.main-nav a {
  font-size: 15px;
  color: var(--text-weak);
  font-weight: 500;
  position: relative;
  padding: 6px 2px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: var(--transition);
}

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

.main-nav a:hover::after {
  width: 100%;
}

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

.main-nav a.active::after {
  width: 100%;
  background: var(--accent);
}

.main-nav .nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.main-nav .nav-cta::after {
  display: none;
}

.main-nav .nav-cta:hover {
  background: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.25);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* Page Hero / Banner */
.page-hero {
  background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
  color: #fff;
  padding: 90px 0 70px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -40px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.4) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 18px;
}

.hero-breadcrumb a {
  color: var(--gold);
}

.hero-breadcrumb .sep {
  opacity: 0.5;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.page-hero h1 .highlight {
  color: var(--gold);
}

.page-hero .lead {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  max-width: 600px;
}

.hero-stats .stat-item .num {
  font-size: 30px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
}

.hero-stats .stat-item .label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

/* Section Common */
.section {
  padding: var(--space-section) 0;
}

.section-sm {
  padding: var(--space-section-md) 0;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}

.section-header .left {}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(233, 69, 96, 0.08);
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.25;
  letter-spacing: 0.5px;
}

.section-header .subtitle {
  font-size: 16px;
  color: var(--text-weak);
  margin-top: 10px;
  max-width: 620px;
}

.section-header .link-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.section-header .link-more:hover {
  border-bottom-color: var(--accent);
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-img-wrap img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  backdrop-filter: blur(4px);
}

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.65;
  flex: 1;
}

.card-footer-link {
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-footer-link:hover {
  gap: 10px;
}

/* Encyclopedia Feature Section */
.feature-panel {
  background: var(--bg-dark);
  border-radius: 24px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 420px;
  color: #fff;
}

.feature-panel .feature-img {
  position: relative;
  overflow: hidden;
}

.feature-panel .feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-panel .feature-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, transparent 60%, rgba(15, 15, 26, 0.9) 100%);
}

.feature-panel .feature-content {
  padding: 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-panel .feature-content .tag {
  font-size: 13px;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.feature-panel .feature-content h3 {
  font-size: 28px;
  line-height: 1.3;
  margin-bottom: 16px;
  font-weight: 700;
}

.feature-panel .feature-content p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.feature-list li i {
  color: var(--gold);
  font-style: normal;
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  width: fit-content;
}

.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233, 69, 96, 0.3);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  color: #fff;
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(245, 193, 108, 0.08);
}

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

.btn-light:hover {
  background: var(--gold);
  color: var(--primary);
}

/* List Content */
.content-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.content-item {
  display: flex;
  gap: 20px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
}

.content-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: rgba(233, 69, 96, 0.15);
}

.content-item .rank {
  font-size: 32px;
  font-weight: 800;
  color: var(--border);
  min-width: 52px;
  text-align: center;
  line-height: 1;
  transition: var(--transition);
}

.content-item:hover .rank {
  color: var(--accent);
}

.content-item .item-body {
  flex: 1;
}

.content-item .item-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.content-item .item-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
}

.content-item .item-meta {
  font-size: 13px;
  color: var(--text-weak);
  white-space: nowrap;
  display: flex;
  gap: 8px;
  align-items: center;
}

.content-item .item-meta .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
}

/* Tags Cloud */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 22px;
  font-size: 14px;
  color: var(--text-main);
  transition: var(--transition);
  font-weight: 500;
}

.tag-pill .count {
  background: rgba(233, 69, 96, 0.1);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 50px;
}

.tag-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.1);
}

/* Timeline / Data Flow */
.timeline-wrap {
  background: var(--bg-dark);
  border-radius: 24px;
  padding: 56px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.timeline-wrap::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.25) 0%, transparent 70%);
  border-radius: 50%;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
  z-index: 2;
}

.timeline-item {
  position: relative;
  padding-left: 24px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 193, 108, 0.2);
}

.timeline-item .step {
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.timeline-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-item p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.7;
}

/* FAQ Section */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(0, 0, 0, 0.04);
  padding: 28px 32px;
  margin-bottom: 16px;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.faq-item:hover {
  border-color: rgba(233, 69, 96, 0.15);
}

.faq-item summary {
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--accent);
  font-weight: 400;
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding-top: 16px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  margin-top: 14px;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 36px;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: #0c0c14;
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #fff;
  font-size: 20px;
  margin-bottom: 16px;
  display: flex;
}

.footer-brand .logo .logo-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(233, 69, 96, 0.2);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--gold);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  flex-wrap: wrap;
  gap: 8px;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-panel {
    grid-template-columns: 1fr;
  }
  .feature-panel .feature-img {
    min-height: 260px;
  }
  .feature-panel .feature-img::before {
    background: linear-gradient(to bottom, transparent 50%, rgba(15, 15, 26, 0.9) 100%);
  }
  .timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .page-hero h1 {
    font-size: 38px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 64px;
  }
  .header-inner {
    height: 64px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    right: -100%;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    width: 280px;
    height: calc(100vh - 64px);
    padding: 32px 28px;
    gap: 20px;
    align-items: flex-start;
    border-left: 1px solid rgba(0, 0, 0, 0.06);
    transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.08);
  }
  .main-nav.open {
    right: 0;
  }
  .main-nav a {
    font-size: 17px;
  }
  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .page-hero {
    padding: 56px 0 48px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .hero-stats {
    gap: 20px;
    flex-wrap: wrap;
  }
  .hero-stats .stat-item .num {
    font-size: 24px;
  }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 32px;
  }
  .section-header h2 {
    font-size: 26px;
  }
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .feature-panel .feature-content {
    padding: 32px 24px;
  }
  .feature-panel .feature-content h3 {
    font-size: 22px;
  }
  .content-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .content-item .rank {
    font-size: 24px;
    min-width: 0;
  }
  .content-item .item-meta {
    white-space: normal;
    flex-wrap: wrap;
  }
  .timeline-wrap {
    padding: 36px 24px;
  }
  .timeline {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .faq-item {
    padding: 20px;
  }
  .cta-inner h2 {
    font-size: 28px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo {
    font-size: 17px;
  }
  .page-hero .lead {
    font-size: 15px;
  }
  .hero-breadcrumb {
    font-size: 13px;
  }
  .card-body {
    padding: 20px;
  }
  .faq-item summary {
    font-size: 15px;
  }
  .tag-pill {
    padding: 8px 16px;
    font-size: 13px;
  }
  .timeline-wrap {
    border-radius: 16px;
  }
  .cta-buttons {
    flex-direction: column;
  }
  .cta-buttons .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Focus accessibility */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(233, 69, 96, 0.4);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Scroll progress */
@keyframes subtle-pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* roulang page: article */
:root{
  --bg:#f6f5f1;
  --surface:#ffffff;
  --ink:#1f2937;
  --ink-weak:#7c8591;
  --primary:#0f1b2d;
  --accent:#c9983d;
  --border:#e3e1da;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,27,45,.06);
  --shadow-hover:0 18px 40px rgba(15,27,45,.12);
  --spacer:80px;
  --container:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",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(--ink);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid transparent;transition:all .25s ease;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:#1b2c45;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:#f0eadf;transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.tag{display:inline-block;padding:7px 18px;border-radius:999px;background:rgba(201,152,61,.12);color:#a4781f;font-size:13px;font-weight:600;letter-spacing:.5px}
/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--primary);letter-spacing:.5px}
.logo-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(201,152,61,.18)}
.main-nav{display:flex;align-items:center;gap:36px}
.main-nav a{font-size:15px;font-weight:600;color:var(--ink-weak);position:relative;padding:6px 2px;transition:color .2s}
.main-nav a::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--accent);transition:width .25s}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--primary)}
.main-nav a.active::after{width:100%}
.main-nav a.nav-cta{display:inline-flex;align-items:center;padding:9px 22px;background:var(--primary);color:#fff;border-radius:999px;transition:all .2s}
.main-nav a.nav-cta::after{display:none}
.main-nav a.nav-cta:hover{background:#1b2c45;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.nav-toggle{display:none;background:none;border:0;width:42px;height:42px;border-radius:10px;cursor:pointer;align-items:center;justify-content:center;gap:5px;flex-direction:column}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--primary);border-radius:2px;transition:all .25s}
/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:14px;color:rgba(255,255,255,.65)}
.breadcrumb a{color:rgba(255,255,255,.85);transition:color .2s}
.breadcrumb a:hover{color:#fff}
.breadcrumb-sep{opacity:.5}
/* Article Hero */
.article-hero{background:linear-gradient(135deg,rgba(15,27,45,.94),rgba(15,27,45,.78)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;padding:72px 0 64px;position:relative}
.article-hero .container{max-width:860px}
.article-hero .tag{margin-bottom:18px}
.article-hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:.5px;margin:14px 0 16px}
.article-desc{font-size:17px;color:rgba(255,255,255,.75);max-width:720px;margin-top:12px}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px;font-size:14px;color:rgba(255,255,255,.6)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
/* Article Body */
.article-body{padding:64px 0 20px}
.article-body .container{max-width:860px}
.article-content{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:48px 52px}
.article-content p{margin-bottom:1.6em;font-size:17px;line-height:1.95;color:#334155}
.article-content h2{font-size:26px;color:var(--primary);margin:1.6em 0 .8em;font-weight:800;line-height:1.4}
.article-content h3{font-size:21px;color:var(--primary);margin:1.5em 0 .6em;font-weight:700}
.article-content ul,.article-content ol{margin:0 0 1.6em 1.4em;font-size:16px;color:#334155}
.article-content ul li{list-style:disc;margin-bottom:.5em}
.article-content ol li{list-style:decimal;margin-bottom:.5em}
.article-content blockquote{border-left:4px solid var(--accent);background:rgba(201,152,61,.06);padding:18px 24px;border-radius:0 12px 12px 0;margin:0 0 1.6em;color:#5b4632}
.article-content img{border-radius:12px;margin:1.6em 0;box-shadow:var(--shadow)}
.article-content a{color:#8a6a1f;border-bottom:1px solid rgba(138,106,31,.3);transition:border-color .2s}
.article-content a:hover{border-color:#8a6a1f}
/* Not Found */
.not-found{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:56px;text-align:center}
.not-found h2{font-size:28px;color:var(--primary);margin-bottom:12px}
.not-found p{color:var(--ink-weak);margin-bottom:24px}
/* Article Toolbar */
.article-toolbar{padding:24px 0 0}
.article-toolbar .container{max-width:860px}
.toolbar-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 32px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px}
.tag-list{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.tag-list .tag-label{font-size:14px;color:var(--ink-weak);font-weight:600}
.article-nav-links{display:flex;align-items:center;gap:20px;font-size:15px;font-weight:600}
.article-nav-links a{color:var(--primary);transition:color .2s}
.article-nav-links a:hover{color:var(--accent)}
/* Explore */
.explore-section{padding:70px 0}
.explore-section .section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .eyebrow{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--accent);text-transform:uppercase}
.section-head h2{font-size:36px;color:var(--primary);margin-top:8px;font-weight:800}
.section-head p{color:var(--ink-weak);margin-top:12px}
.explore-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.explore-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;display:block}
.explore-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.explore-card img{height:180px;width:100%;object-fit:cover;border-bottom:1px solid var(--border)}
.explore-card-body{padding:26px}
.explore-card-body h3{font-size:20px;color:var(--primary);margin-bottom:6px}
.explore-card-body p{color:var(--ink-weak);font-size:15px}
.explore-card-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-weight:600;color:var(--accent);font-size:14px}
/* CTA */
.cta-section{background:linear-gradient(135deg,rgba(15,27,45,.96),rgba(15,27,45,.82)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;padding:80px 0;text-align:center;color:#fff}
.cta-section h2{font-size:34px;font-weight:800;margin-bottom:14px}
.cta-section p{font-size:17px;color:rgba(255,255,255,.75);max-width:620px;margin:0 auto 28px}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
/* Footer */
.site-footer{background:#0d1420;color:rgba(255,255,255,.68);padding:60px 0 0}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .logo{color:#fff;font-size:20px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:380px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:22px 0;font-size:13px;color:rgba(255,255,255,.4)}
/* Responsive */
@media(max-width:1024px){
  :root{--spacer:56px}
  .article-hero h1{font-size:34px}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .site-header .header-inner{position:relative}
  .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);flex-direction:column;align-items:flex-start;padding:20px 24px;gap:16px;box-shadow:var(--shadow)}
  .main-nav.nav-open{display:flex}
  .main-nav a{font-size:16px}
  .main-nav a.nav-cta{margin-top:8px}
  .article-hero{padding:48px 0}
  .article-hero h1{font-size:28px}
  .article-content{padding:28px 22px}
  .article-content p{font-size:16px}
  .toolbar-box{flex-direction:column;align-items:flex-start}
  .explore-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .cta-section{padding:56px 0}
  .cta-section h2{font-size:28px}
}
@media(max-width:520px){
  .header-inner{height:64px}
  .logo{font-size:18px}
  .article-hero h1{font-size:24px}
  .article-desc{font-size:15px}
  .article-content{padding:22px 18px}
  .article-content h2{font-size:22px}
  .article-content h3{font-size:18px}
  .article-nav-links{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-buttons .btn{width:100%}
  .footer-bottom{justify-content:center;text-align:center}
}

/* roulang page: category2 */
:root {
      --color-primary: #0f1c2e;
      --color-primary-light: #1a2c46;
      --color-primary-slightly: #243a57;
      --color-accent: #d9a441;
      --color-accent-light: #efc46c;
      --color-bg: #f8f6f1;
      --color-bg-alt: #f1ede4;
      --color-surface: #ffffff;
      --color-text: #16212e;
      --color-text-weak: #6b7583;
      --color-border: #e5e0d5;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 8px rgba(15, 28, 46, 0.06);
      --shadow-md: 0 10px 34px rgba(15, 28, 46, 0.08);
      --shadow-lg: 0 18px 54px rgba(15, 28, 46, 0.12);
      --space-section: 96px;
      --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

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

    ul,
    ol {
      list-style: none;
    }

    button {
      font-family: inherit;
      border: none;
      background: none;
      cursor: pointer;
    }

    .container {
      width: min(1200px, 90%);
      margin: 0 auto;
    }

    .section {
      padding: var(--space-section) 0;
    }

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

    .section-head.centered {
      text-align: center;
    }

    .section-head.split {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--color-primary);
      line-height: 1.25;
      margin-top: 8px;
    }

    .section-head p {
      color: var(--color-text-weak);
      max-width: 560px;
      margin-top: 10px;
      font-size: 1rem;
    }

    .section-head.centered p {
      margin-left: auto;
      margin-right: auto;
    }

    .section-label {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.24em;
      text-transform: uppercase;
      color: var(--color-accent);
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 14px;
      color: var(--color-primary);
      border-bottom: 1px solid var(--color-accent);
      padding-bottom: 4px;
      transition: color 0.25s, gap 0.25s;
    }

    .text-link:hover {
      color: var(--color-accent);
      gap: 12px;
    }

    .text-link i {
      font-size: 12px;
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(248, 246, 241, 0.86);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid transparent;
      transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
    }

    .site-header.scrolled {
      background: rgba(248, 246, 241, 0.96);
      border-bottom-color: var(--color-border);
      box-shadow: 0 1px 20px rgba(15, 28, 46, 0.04);
    }

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

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      color: var(--color-primary);
    }

    .logo-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: radial-gradient(circle at 35% 35%, var(--color-accent-light), var(--color-accent));
      box-shadow: 0 0 0 4px rgba(217, 164, 65, 0.18);
      flex-shrink: 0;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .main-nav a {
      position: relative;
      font-size: 14px;
      letter-spacing: 0.06em;
      color: var(--color-text);
      padding: 12px 2px;
      transition: color 0.25s;
    }

    .main-nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 4px;
      width: 100%;
      height: 2px;
      background: var(--color-accent);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.3s ease;
    }

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

    .main-nav a:hover::after,
    .main-nav a.active::after {
      transform: scaleX(1);
    }

    .main-nav a.active {
      font-weight: 600;
      color: var(--color-primary);
    }

    .main-nav .nav-cta {
      padding: 9px 22px;
      border: 1px solid var(--color-primary);
      border-radius: 100px;
      font-weight: 600;
      font-size: 13px;
      letter-spacing: 0.08em;
      margin-left: 8px;
      transition: background 0.3s, color 0.3s, transform 0.3s;
    }

    .main-nav .nav-cta::after {
      display: none;
    }

    .main-nav .nav-cta:hover {
      background: var(--color-primary);
      color: #fff;
      transform: translateY(-1px);
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 42px;
      height: 42px;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      transition: background 0.25s;
    }

    .nav-toggle:hover {
      background: rgba(15, 28, 46, 0.04);
    }

    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-primary);
      border-radius: 2px;
      transition: transform 0.3s, opacity 0.3s;
    }

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

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

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

    /* ===== Hero ===== */
    .page-hero {
      background: linear-gradient(93deg, rgba(15, 28, 46, 0.92) 0%, rgba(15, 28, 46, 0.7) 55%, rgba(15, 28, 46, 0.36) 100%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
      padding: 108px 0 96px;
      color: #fff;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.6);
      margin-bottom: 28px;
      letter-spacing: 0.04em;
    }

    .breadcrumb a {
      transition: color 0.25s;
    }

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

    .breadcrumb span {
      opacity: 0.5;
    }

    .page-hero h1 {
      font-size: clamp(2.4rem, 5vw, 3.8rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.15;
    }

    .hero-sub {
      margin-top: 20px;
      font-size: 1.08rem;
      color: rgba(255, 255, 255, 0.84);
      max-width: 560px;
      line-height: 1.8;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 28px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      border-radius: 100px;
      font-size: 13px;
      font-weight: 500;
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(4px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 34px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 13px 30px;
      border-radius: 100px;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.04em;
      transition: box-shadow 0.25s, transform 0.25s, background 0.25s, color 0.25s, border-color 0.25s;
    }

    .btn:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 3px;
    }

    .btn-primary {
      background: var(--color-accent);
      color: var(--color-primary);
    }

    .btn-primary:hover {
      background: var(--color-accent-light);
      transform: translateY(-2px);
      box-shadow: 0 10px 26px rgba(217, 164, 65, 0.32);
    }

    .btn-ghost {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.36);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.7);
    }

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

    .btn-light:hover {
      background: var(--color-accent-light);
      transform: translateY(-2px);
      box-shadow: 0 10px 26px rgba(217, 164, 65, 0.3);
    }

    .btn-ghost-light {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.4);
    }

    .btn-ghost-light:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.8);
    }

    /* ===== Intro ===== */
    .intro-section {
      background: var(--color-surface);
      border-bottom: 1px solid var(--color-border);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1.15fr 1fr;
      gap: 72px;
      align-items: center;
    }

    .intro-copy h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      color: var(--color-primary);
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-top: 10px;
    }

    .intro-copy p {
      margin-top: 18px;
      color: var(--color-text-weak);
      font-size: 1rem;
      max-width: 480px;
    }

    .intro-copy .text-link {
      margin-top: 24px;
    }

    .feature-mini-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .feature-mini-card {
      display: flex;
      gap: 18px;
      align-items: flex-start;
      padding: 22px 24px;
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
    }

    .feature-mini-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
      border-color: rgba(217, 164, 65, 0.4);
    }

    .feature-mini-icon {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--color-primary);
      color: var(--color-accent-light);
      font-size: 17px;
    }

    .feature-mini-card h3 {
      font-size: 15px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 4px;
    }

    .feature-mini-card p {
      font-size: 13px;
      color: var(--color-text-weak);
      line-height: 1.6;
    }

    /* ===== Guides ===== */
    .guides-section {
      background: var(--color-bg);
    }

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

    .guide-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 30px 28px;
      display: flex;
      flex-direction: column;
      transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
    }

    .guide-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: rgba(217, 164, 65, 0.35);
    }

    .guide-card-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 18px;
    }

    .guide-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      background: rgba(217, 164, 65, 0.12);
      color: var(--color-accent);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      border-radius: 100px;
      font-size: 12px;
      font-weight: 600;
      color: var(--color-primary);
      background: var(--color-bg-alt);
      border: 1px solid var(--color-border);
    }

    .guide-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.4;
      margin-bottom: 8px;
    }

    .guide-card p {
      font-size: 14px;
      color: var(--color-text-weak);
      line-height: 1.7;
      flex-grow: 1;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--color-primary);
      margin-top: 18px;
      transition: color 0.25s, gap 0.25s;
    }

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

    .card-link i {
      font-size: 11px;
    }

    /* ===== Article List ===== */
    .article-list-section {
      background: var(--color-surface);
    }

    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .article-item {
      display: flex;
      flex-direction: column;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 26px 28px;
      background: var(--color-bg);
      transition: box-shadow 0.3s, transform 0.3s, background 0.3s;
    }

    .article-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
      background: #fff;
    }

    .article-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
    }

    .article-category {
      font-size: 12px;
      font-weight: 600;
      color: var(--color-accent);
      background: rgba(217, 164, 65, 0.1);
      padding: 4px 12px;
      border-radius: 100px;
    }

    .article-date {
      font-size: 12px;
      color: var(--color-text-weak);
    }

    .article-item h3 {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.45;
      color: var(--color-primary);
      transition: color 0.25s;
    }

    .article-item h3 a:hover {
      color: var(--color-accent);
    }

    .article-desc {
      font-size: 14px;
      color: var(--color-text-weak);
      line-height: 1.7;
      margin-top: 8px;
      flex-grow: 1;
    }

    .article-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 18px;
      padding-top: 14px;
      border-top: 1px solid var(--color-border);
    }

    .article-views {
      font-size: 12px;
      color: var(--color-text-weak);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .article-views i {
      font-size: 12px;
    }

    /* ===== Equipment ===== */
    .equipment-section {
      background: var(--color-bg);
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }

    .equipment-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 72px;
      align-items: center;
    }

    .equipment-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      aspect-ratio: 4 / 3;
      background: var(--color-primary);
    }

    .equipment-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .equipment-layout:hover .equipment-image img {
      transform: scale(1.03);
    }

    .equipment-content h2 {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      color: var(--color-primary);
      letter-spacing: -0.02em;
      margin-top: 10px;
      line-height: 1.3;
    }

    .equipment-content > p {
      color: var(--color-text-weak);
      margin-top: 14px;
      font-size: 15px;
      max-width: 440px;
    }

    .equipment-list {
      margin-top: 28px;
      display: grid;
      gap: 16px;
    }

    .equipment-list li {
      display: flex;
      gap: 18px;
      align-items: flex-start;
      padding: 18px 20px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
    }

    .equipment-list li:hover {
      box-shadow: var(--shadow-md);
      transform: translateX(4px);
      border-color: rgba(217, 164, 65, 0.35);
    }

    .equipment-level {
      flex-shrink: 0;
      width: 52px;
      text-align: center;
      padding: 6px 0;
      border-radius: 8px;
      font-size: 12px;
      font-weight: 700;
      background: rgba(15, 28, 46, 0.08);
      color: var(--color-primary);
    }

    .equipment-level.mid {
      background: rgba(217, 164, 65, 0.18);
      color: #8a6715;
    }

    .equipment-level.exp {
      background: rgba(15, 28, 46, 0.85);
      color: #fff;
    }

    .equipment-list h3 {
      font-size: 15px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 2px;
    }

    .equipment-list p {
      font-size: 13px;
      color: var(--color-text-weak);
      line-height: 1.6;
    }

    /* ===== Steps ===== */
    .steps-section {
      background: var(--color-surface);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: step;
    }

    .step {
      position: relative;
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 34px 26px 28px;
      transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
    }

    .step:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: rgba(217, 164, 65, 0.35);
    }

    .step-num {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0.1em;
      color: var(--color-accent);
      background: rgba(217, 164, 65, 0.12);
      padding: 4px 12px;
      border-radius: 100px;
      margin-bottom: 14px;
    }

    .step h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 6px;
    }

    .step p {
      font-size: 13px;
      color: var(--color-text-weak);
      line-height: 1.65;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--color-bg);
      border-top: 1px solid var(--color-border);
    }

    .faq-container {
      max-width: 860px;
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: box-shadow 0.25s, border-color 0.25s;
    }

    .faq-item:hover {
      border-color: rgba(217, 164, 65, 0.35);
    }

    .faq-item.open {
      box-shadow: var(--shadow-md);
      border-color: rgba(217, 164, 65, 0.4);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      font-size: 15px;
      font-weight: 600;
      color: var(--color-primary);
      text-align: left;
      transition: background 0.25s;
    }

    .faq-question:hover {
      background: rgba(217, 164, 65, 0.04);
    }

    .faq-question i {
      font-size: 13px;
      color: var(--color-text-weak);
      transition: transform 0.3s;
      flex-shrink: 0;
    }

    .faq-item.open .faq-question i {
      transform: rotate(180deg);
      color: var(--color-accent);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }

    .faq-answer p {
      padding: 0 24px 22px;
      font-size: 14px;
      color: var(--color-text-weak);
      line-height: 1.8;
      border-top: 1px solid var(--color-border);
      padding-top: 16px;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(rgba(15, 28, 46, 0.9), rgba(15, 28, 46, 0.9)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
      padding: 96px 0;
      color: #fff;
      text-align: center;
    }

    .cta-inner {
      max-width: 680px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      font-size: clamp(1.9rem, 3.4vw, 2.7rem);
      font-weight: 800;
      line-height: 1.3;
    }

    .cta-inner p {
      margin-top: 16px;
      font-size: 16px;
      color: rgba(255, 255, 255, 0.78);
      line-height: 1.8;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 14px;
      margin-top: 32px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--color-primary);
      color: rgba(255, 255, 255, 0.72);
      padding: 72px 0 0;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .footer-brand p {
      margin-top: 16px;
      font-size: 14px;
      line-height: 1.8;
      max-width: 320px;
      color: rgba(255, 255, 255, 0.6);
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
      letter-spacing: 0.06em;
    }

    .footer-col ul {
      display: grid;
      gap: 12px;
    }

    .footer-col a {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
      transition: color 0.25s, padding-left 0.25s;
    }

    .footer-col a:hover {
      color: var(--color-accent-light);
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      padding: 26px 0 30px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      :root {
        --space-section: 76px;
      }

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

      .guide-grid {
        grid-template-columns: repeat(2, 1fr);
      }

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

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .article-list {
        grid-template-columns: 1fr;
      }

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

      .footer-brand {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 768px) {
      .nav-toggle {
        display: flex;
      }

      .main-nav {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        padding: 20px 5%;
        gap: 6px;
        display: none;
      }

      .main-nav.open {
        display: flex;
      }

      .main-nav a {
        width: 100%;
        padding: 12px 8px;
        font-size: 15px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.04);
      }

      .main-nav a::after {
        bottom: 0;
      }

      .main-nav .nav-cta {
        margin-left: 0;
        margin-top: 10px;
        text-align: center;
        border-color: var(--color-primary);
      }

      .page-hero {
        padding: 76px 0 64px;
      }

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

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

      .section-head.split {
        flex-direction: column;
        align-items: flex-start;
      }

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

      .cta-section {
        padding: 68px 0;
      }
    }

    @media (max-width: 520px) {
      :root {
        --space-section: 56px;
      }

      .header-inner {
        height: 62px;
      }

      .main-nav {
        top: 62px;
      }

      .logo {
        font-size: 1.05rem;
      }

      .logo-dot {
        width: 10px;
        height: 10px;
      }

      .page-hero h1 {
        font-size: 2.1rem;
      }

      .hero-sub {
        font-size: 15px;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .guide-card {
        padding: 24px 20px;
      }

      .article-item {
        padding: 22px 18px;
      }

      .equipment-list li {
        flex-direction: column;
        gap: 8px;
      }

      .equipment-level {
        width: auto;
        display: inline-block;
        padding: 4px 14px;
      }

      .step {
        padding: 26px 20px 22px;
      }

      .faq-question {
        padding: 18px 18px;
        font-size: 14px;
      }

      .faq-answer p {
        padding: 14px 18px 18px;
        font-size: 13px;
      }

      .cta-actions .btn {
        width: 100%;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }