/* roulang page: index */
:root{
  --bg-deep:#0A0E0C;
  --bg-panel:#101612;
  --bg-elevated:#182019;
  --bg-light:#F2F5EF;
  --primary:#C7F24A;
  --primary-hover:#D8FF66;
  --primary-soft:rgba(199,242,74,0.12);
  --secondary:#FFB838;
  --secondary-soft:rgba(255,184,56,0.14);
  --text:#E8EDE6;
  --text-dim:#9BAA9E;
  --text-light:#1A211C;
  --border:rgba(255,255,255,0.08);
  --border-strong:rgba(199,242,74,0.35);
  --danger:#FF5C5C;
  --success:#36D47A;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --shadow-panel:0 4px 16px rgba(0,0,0,0.40);
  --shadow-hover:0 8px 28px rgba(0,0,0,0.55);
  --shadow-glow:0 4px 20px rgba(199,242,74,0.25);
  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;
  --space-6:24px;--space-7:32px;--space-8:40px;--space-9:48px;--space-10:64px;--space-11:96px;
  --font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','DIN Alternate',ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg-deep);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{position:relative}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:40px;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:4px;
  padding:4px 12px;
  margin-bottom:12px;
  text-transform:uppercase;
}
.section-tag::before{
  content:"";
  width:6px;height:6px;
  background:var(--primary);
  border-radius:2px;
}
.section-title{
  font-size:32px;
  font-weight:800;
  line-height:1.2;
  color:var(--text);
  letter-spacing:-.01em;
}
.section-sub{
  font-size:15px;
  color:var(--text-dim);
  max-width:640px;
  margin-top:8px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-weight:700;
  font-size:15px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .25s ease,transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn:active{
  transform:scale(.98);
}
.btn:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.btn-primary{
  background:var(--primary);
  color:#0A0E0C;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  background:var(--primary-hover);
  transform:translateY(-2px);
  box-shadow:0 6px 28px rgba(199,242,74,0.35);
}
.btn-secondary{
  background:transparent;
  border-color:var(--border-strong);
  color:var(--primary);
}
.btn-secondary:hover{
  background:var(--primary-soft);
  transform:translateY(-2px);
}
.btn-ghost{
  background:transparent;
  color:var(--text-dim);
}
.btn-ghost:hover{
  color:#fff;
}
.btn-sm{
  min-height:38px;
  padding:0 16px;
  font-size:14px;
}
.btn[disabled]{
  opacity:.5;
  pointer-events:none;
}
.tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  padding:4px 10px;
  border-radius:4px;
  background:var(--primary-soft);
  color:var(--primary);
  line-height:1.4;
}
.tag-hot{
  background:var(--secondary-soft);
  color:var(--secondary);
}
.tag-gray{
  background:rgba(255,255,255,0.06);
  color:var(--text-dim);
}
.tag-outline{
  background:transparent;
  border:1px solid var(--border-strong);
  color:var(--primary);
}

/* ======= Header ======= */
.site-header{
  position:sticky;
  top:0;
  z-index:200;
  background:var(--bg-panel);
  box-shadow:0 4px 20px rgba(0,0,0,0.35);
}
.header-top{
  border-bottom:1px solid var(--border);
  background:var(--bg-panel);
}
.header-top-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:68px;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  border-radius:8px;
  background:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  box-shadow:var(--shadow-glow);
  flex-shrink:0;
}
.brand-mark::before{
  content:"";
  width:14px;height:14px;
  border:3px solid #0A0E0C;
  border-radius:4px;
  background:transparent;
}
.brand-text{
  font-size:20px;
  font-weight:800;
  color:var(--text);
  letter-spacing:-.01em;
  line-height:1.2;
}
.brand-text em{
  font-style:normal;
  color:var(--primary);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:16px;
  flex:1;
  justify-content:flex-end;
}
.header-search{
  display:flex;
  align-items:center;
  background:var(--bg-deep);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--r-sm);
  padding:0 4px 0 16px;
  min-height:40px;
  width:min(320px,30vw);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.header-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(199,242,74,0.18);
}
.header-search input{
  flex:1;
  background:transparent;
  border:none;
  outline:none;
  color:var(--text);
  font-size:14px;
  padding:8px 0;
}
.header-search input::placeholder{
  color:#5B6B5E;
}
.header-search button{
  background:var(--primary);
  color:#0A0E0C;
  border:none;
  border-radius:6px;
  padding:0 18px;
  min-height:32px;
  font-weight:700;
  font-size:14px;
  cursor:pointer;
  transition:background .25s ease;
}
.header-search button:hover{
  background:var(--primary-hover);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  color:var(--text);
  cursor:pointer;
  transition:background .25s ease;
}
.nav-toggle:hover{
  background:var(--primary-soft);
}
.nav-toggle svg{
  width:20px;height:20px;
  stroke:currentColor;
  stroke-width:2;
  fill:none;
}

/* Channel Tabs */
.header-nav{
  background:var(--bg-deep);
}
.header-nav .container{
  display:flex;
  align-items:center;
  height:48px;
}
.channel-tabs{
  display:flex;
  gap:4px;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
  -ms-overflow-style:none;
  scroll-behavior:smooth;
}
.channel-tabs::-webkit-scrollbar{
  display:none;
}
.channel-tab{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 20px;
  border-radius:24px;
  font-size:14px;
  font-weight:600;
  color:var(--text-dim);
  border:1px solid transparent;
  transition:all .25s ease;
  white-space:nowrap;
}
.channel-tab:hover{
  color:var(--text);
  background:var(--primary-soft);
}
.channel-tab.active{
  color:var(--primary);
  background:var(--primary-soft);
  border-color:var(--border-strong);
}
.channel-tab .tab-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:currentColor;
  opacity:.7;
}

/* Mobile Menu */
.mobile-menu{
  display:none;
  background:var(--bg-panel);
  border-top:1px solid var(--border);
  padding:16px 24px 20px;
}
.mobile-menu.open{
  display:block;
}
.mobile-menu .header-search{
  width:100%;
  margin-bottom:12px;
}
.mobile-menu .btn{
  width:100%;
}
body.menu-open::before{
  content:"";
  position:fixed;
  inset:0;
  background:rgba(0,0,0,0.55);
  z-index:150;
  backdrop-filter:blur(2px);
}

/* ======= Hero ======= */
.hero{
  padding:80px 0 72px;
  background:
    linear-gradient(135deg,rgba(10,14,12,0.92) 0%,rgba(10,14,12,0.72) 60%,rgba(10,14,12,0.55) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,0.07) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.hero .container{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  color:var(--secondary);
  background:var(--secondary-soft);
  border-radius:4px;
  padding:6px 12px;
  margin-bottom:20px;
}
.hero-badge .pulse{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--secondary);
  box-shadow:0 0 0 4px rgba(255,184,56,0.2);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(255,184,56,0.2)}
  50%{box-shadow:0 0 0 8px rgba(255,184,56,0.05)}
}
.hero h1{
  font-size:46px;
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  color:var(--text);
  margin-bottom:18px;
}
.hero h1 .hl{
  color:var(--primary);
}
.hero-sub{
  font-size:17px;
  color:var(--text-dim);
  line-height:1.6;
  margin-bottom:32px;
  max-width:520px;
}
.hero-ctas{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.hero-stats{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.hero-stat-card{
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:20px 20px 16px;
  transition:all .25s ease;
  box-shadow:var(--shadow-panel);
}
.hero-stat-card:hover{
  border-color:var(--border-strong);
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.hero-stat-card .label{
  font-size:13px;
  color:var(--text-dim);
  margin-bottom:6px;
}
.hero-stat-card .value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:34px;
  font-weight:700;
  color:var(--primary);
  line-height:1.1;
}
.hero-stat-card .note{
  font-size:12px;
  color:var(--text-dim);
  margin-top:6px;
}

/* ======= Metrics ======= */
.metrics{
  background:var(--bg-panel);
  border-bottom:1px solid var(--border);
}
.metrics-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric-cell{
  padding:36px 32px;
  border-right:1px solid var(--border);
}
.metric-cell:last-child{
  border-right:none;
}
.metric-cell .metric-label{
  font-size:13px;
  color:var(--text-dim);
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:8px;
}
.metric-cell .metric-label .hot-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--secondary);
  display:inline-block;
}
.metric-cell .metric-value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:38px;
  font-weight:700;
  color:var(--primary);
  line-height:1.1;
  margin-bottom:6px;
}
.metric-cell .metric-desc{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.5;
}

/* ======= Services ======= */
.services{
  padding:96px 0;
}
.services-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.service-item{
  display:flex;
  gap:20px;
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:32px 28px;
  transition:all .25s ease;
  box-shadow:var(--shadow-panel);
}
.service-item:hover{
  border-color:var(--border-strong);
  background:var(--primary-soft);
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.service-index{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:700;
  color:var(--text-dim);
  opacity:.7;
  transition:color .25s ease;
  flex-shrink:0;
}
.service-item:hover .service-index{
  color:var(--primary);
}
.service-icon{
  width:48px;height:48px;
  border-radius:12px;
  background:var(--bg-elevated);
  color:var(--text-dim);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  transition:all .25s ease;
}
.service-item:hover .service-icon{
  background:var(--primary);
  color:#0A0E0C;
  transform:scale(1.05);
}
.service-icon svg{
  width:24px;height:24px;
  stroke:currentColor;
  fill:none;
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.service-content h3{
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin-bottom:6px;
}
.service-content p{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.6;
}

/* ======= News ======= */
.news-section{
  padding:96px 0;
  background:var(--bg-deep);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.news-list{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.news-item{
  display:flex;
  gap:0;
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:all .25s ease;
  box-shadow:var(--shadow-panel);
}
.news-item:hover{
  border-color:var(--border-strong);
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.news-thumb{
  flex-shrink:0;
  width:180px;
  overflow:hidden;
  position:relative;
}
.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.news-item:hover .news-thumb img{
  transform:scale(1.05);
}
.news-body{
  flex:1;
  padding:22px 28px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:8px;
  flex-wrap:wrap;
}
.news-time{
  font-size:13px;
  color:var(--text-dim);
}
.news-title{
  font-size:19px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:8px;
}
.news-title a{
  color:var(--text);
  transition:color .25s ease;
}
.news-title a:hover{
  color:var(--primary);
}
.news-excerpt{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.6;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-more{
  font-size:13px;
  font-weight:700;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .25s ease;
}
.news-more:hover{
  gap:10px;
}
.news-more::after{
  content:"→";
}

/* Empty State */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:48px 24px;
  border:2px dashed rgba(255,255,255,0.15);
  border-radius:var(--r-md);
  text-align:center;
  background:var(--bg-panel);
}
.empty-state .empty-icon{
  width:48px;height:48px;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
}
.empty-state p{
  color:var(--text-dim);
  font-size:15px;
}

/* ======= Compare ======= */
.compare-section{
  padding:96px 0;
  background:var(--bg-deep);
}
.compare-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  background:var(--bg-elevated);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-panel);
}
.compare-col{
  padding:36px 40px;
}
.compare-col h3{
  font-size:20px;
  font-weight:800;
  margin-bottom:6px;
}
.compare-col p.sub{
  font-size:14px;
  color:var(--text-dim);
  margin-bottom:24px;
}
.compare-col.old{
  background:var(--bg-elevated);
  color:var(--text-dim);
}
.compare-col.old h3{
  color:var(--text);
}
.compare-col.new{
  background:var(--primary-soft);
  border-left:2px solid var(--border-strong);
  color:var(--text);
  position:relative;
}
.compare-col.new::after{
  content:"推荐";
  position:absolute;
  top:20px;right:20px;
  background:var(--secondary-soft);
  color:var(--secondary);
  font-size:12px;
  font-weight:700;
  padding:4px 12px;
  border-radius:20px;
}
.compare-item{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--border);
  font-size:14px;
  line-height:1.5;
}
.compare-item:last-child{
  border-bottom:none;
}
.compare-col.old .compare-item{
  color:var(--text-dim);
}
.compare-item .cross{
  color:var(--danger);
  flex-shrink:0;
  font-weight:700;
}
.compare-col.new .compare-item{
  color:var(--text);
}
.compare-item .check{
  color:var(--primary);
  flex-shrink:0;
  font-weight:700;
}
.compare-bars{
  grid-column:1 / -1;
  border-top:1px solid var(--border);
  padding:24px 40px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
}
.compare-bar-item .bar-label{
  font-size:14px;
  color:var(--text-dim);
  margin-bottom:8px;
  display:flex;
  justify-content:space-between;
}
.compare-bar-item .bar-label b{
  color:var(--text);
  font-family:var(--font-mono);
}
.bar-track{
  height:8px;
  border-radius:4px;
  background:rgba(255,255,255,0.08);
  overflow:hidden;
}
.bar-fill{
  height:100%;
  border-radius:4px;
  transition:width 1s ease;
}
.bar-fill.old-bar{
  width:30%;
  background:rgba(255,92,92,0.7);
}
.bar-fill.new-bar{
  width:90%;
  background:var(--primary);
  box-shadow:0 0 12px rgba(199,242,74,0.4);
}

/* ======= FAQ ======= */
.faq-section{
  padding:96px 0;
  background:var(--bg-panel);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.faq-wrap{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--border);
  padding:22px 0;
  transition:background .3s ease;
}
.faq-item:first-child{
  border-top:1px solid var(--border);
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  background:transparent;
  border:none;
  cursor:pointer;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  padding:4px 0;
  transition:color .25s ease;
}
.faq-question:hover{
  color:var(--primary);
}
.faq-item.open .faq-question{
  color:var(--primary);
}
.faq-arrow{
  flex-shrink:0;
  width:20px;height:20px;
  position:relative;
  transition:transform .3s ease;
}
.faq-arrow::before,.faq-arrow::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-arrow::before{
  width:12px;height:2px;
  top:9px;left:4px;
}
.faq-arrow::after{
  width:2px;height:12px;
  top:4px;left:9px;
}
.faq-item.open .faq-arrow{
  transform:rotate(45deg);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease,padding .4s ease;
  font-size:14px;
  color:var(--text-dim);
  line-height:1.7;
}
.faq-item.open .faq-answer{
  max-height:200px;
  padding-top:12px;
}

/* ======= Convert Form ======= */
.convert-section{
  padding:96px 0;
  background:
    linear-gradient(120deg,rgba(10,14,12,0.94) 0%,rgba(10,14,12,0.82) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  position:relative;
}
.convert-section::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  box-shadow:0 0 12px rgba(199,242,74,0.4);
}
.convert-inner{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:48px;
  align-items:center;
  position:relative;
  z-index:1;
}
.convert-copy h2{
  font-size:32px;
  font-weight:800;
  color:var(--text);
  line-height:1.2;
  margin-bottom:12px;
}
.convert-copy p{
  font-size:15px;
  color:var(--text-dim);
  max-width:400px;
}
.convert-form-wrap{
  background:var(--bg-panel);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-panel);
}
.convert-form .field{
  margin-bottom:18px;
}
.convert-form label{
  display:block;
  font-size:14px;
  font-weight:500;
  color:var(--text);
  margin-bottom:8px;
}
.convert-form input,
.convert-form select{
  width:100%;
  min-height:46px;
  padding:0 16px;
  background:var(--bg-deep);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--r-sm);
  color:var(--text);
  font-size:15px;
  outline:none;
  transition:border-color .25s ease,box-shadow .25s ease;
  appearance:none;
}
.convert-form select{
  cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%239BAA9E' stroke-width='2'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 16px center;
}
.convert-form input:focus,
.convert-form select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(199,242,74,0.18);
}
.convert-form input::placeholder{
  color:#5B6B5E;
}
.convert-form .btn{
  width:100%;
  margin-top:8px;
}
.form-message{
  margin-top:14px;
  font-size:14px;
  padding:10px 16px;
  border-radius:var(--r-sm);
  display:none;
}
.form-message.success{
  display:block;
  background:rgba(54,212,122,0.12);
  color:var(--success);
  border:1px solid rgba(54,212,122,0.3);
}
.form-message.error{
  display:block;
  background:rgba(255,92,92,0.12);
  color:var(--danger);
  border:1px solid rgba(255,92,92,0.3);
}
.privacy-note{
  font-size:12px;
  color:var(--text-dim);
  text-align:center;
  margin-top:16px;
  line-height:1.5;
}

/* ======= Footer ======= */
.site-footer{
  background:var(--bg-panel);
  padding-top:64px;
  border-top:1px solid var(--primary);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  box-shadow:0 0 12px rgba(199,242,74,0.4);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand-text{
  font-size:22px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-dim);
  margin-top:16px;
  max-width:320px;
  line-height:1.6;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.05em;
  margin-bottom:20px;
  text-transform:uppercase;
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul a{
  font-size:14px;
  color:var(--text-dim);
  transition:color .25s ease;
}
.footer-col ul a:hover{
  color:var(--primary);
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{
  font-size:13px;
  color:var(--text-dim);
}
.footer-bottom .legal{
  display:flex;
  gap:20px;
}
.footer-bottom .legal a{
  font-size:13px;
  color:var(--text-dim);
  transition:color .25s ease;
}
.footer-bottom .legal a:hover{
  color:var(--primary);
}

/* ======= Skeleton (load state) ======= */
.skeleton{
  background:var(--bg-elevated);
  border-radius:var(--r-md);
  overflow:hidden;
  position:relative;
}
.skeleton::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.06),transparent);
  animation:shimmer 1.5s infinite;
  transform:translateX(-100%);
}
@keyframes shimmer{
  100%{transform:translateX(100%)}
}

/* ======= Responsive ======= */
@media (max-width:1280px){
  .container{padding:0 28px}
}
@media (max-width:1024px){
  .hero{padding:64px 0}
  .hero .container{
    grid-template-columns:1fr;
    gap:40px;
  }
  .hero-sub{max-width:100%}
  .metrics-grid{grid-template-columns:1fr 1fr}
  .metric-cell{
    border-right:none;
    border-bottom:1px solid var(--border);
  }
  .metric-cell:nth-child(even){
    border-left:1px solid var(--border);
  }
  .metric-cell:nth-child(n+3){
    border-bottom:none;
  }
  .services-grid{grid-template-columns:1fr 1fr}
  .news-thumb{width:160px}
  .compare-panel{grid-template-columns:1fr}
  .compare-col.new{
    border-left:none;
    border-top:2px solid var(--border-strong);
  }
  .compare-bars{
    grid-template-columns:1fr;
    gap:16px;
  }
  .convert-inner{grid-template-columns:1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .header-top-inner{
    height:60px;
  }
  .header-search{
    display:none;
  }
  .header-actions .btn-header{
    display:none;
  }
  .nav-toggle{
    display:flex;
  }
  .mobile-menu{
    display:none;
  }
  .mobile-menu.open{
    display:block;
    position:fixed;
    top:60px;
    left:0;
    right:0;
    z-index:180;
    box-shadow:0 16px 32px rgba(0,0,0,0.5);
  }
  .hero{padding:48px 0}
  .hero h1{
    font-size:34px;
  }
  .hero-stats{
    gap:12px;
  }
  .hero-stat-card{
    padding:16px 14px;
  }
  .hero-stat-card .value{
    font-size:28px;
  }
  .metrics{padding:0}
  .metric-cell{
    padding:24px 20px;
  }
  .metric-cell .metric-value{
    font-size:30px;
  }
  .section-title{
    font-size:26px;
  }
  .services-grid{
    grid-template-columns:1fr;
  }
  .service-item{
    padding:24px 20px;
  }
  .news-item{
    flex-direction:column;
  }
  .news-thumb{
    width:100%;
    height:160px;
  }
  .news-body{
    padding:20px;
  }
  .compare-col{
    padding:28px 20px;
  }
  .compare-bars{
    padding:24px 20px;
  }
  .faq-wrap{
    padding:0;
  }
  .convert-form-wrap{
    padding:24px 20px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
}
@media (max-width:576px){
  .hero h1{
    font-size:28px;
  }
  .hero-sub{
    font-size:15px;
  }
  .hero-ctas .btn{
    flex:1;
    padding:0 14px;
  }
  .hero-stats{
    grid-template-columns:1fr;
  }
  .metrics-grid{
    grid-template-columns:1fr;
  }
  .metric-cell{
    border-right:none !important;
    border-left:none !important;
    border-bottom:1px solid var(--border) !important;
  }
  .metric-cell:last-child{
    border-bottom:none !important;
  }
  .section-head{
    flex-direction:column;
    gap:12px;
  }
  .channel-tab{
    padding:0 16px;
    font-size:13px;
  }
  .news-title{
    font-size:17px;
  }
  .compare-panel::after{
    font-size:11px;
    top:12px;right:12px;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --bg-deep: #0A0E0C;
  --bg-panel: #101612;
  --bg-elevated: #182019;
  --bg-light: #F2F5EF;
  --primary: #C7F24A;
  --primary-hover: #D8FF66;
  --primary-soft: rgba(199, 242, 74, 0.12);
  --secondary: #FFB838;
  --secondary-soft: rgba(255, 184, 56, 0.14);
  --text: #E8EDE6;
  --text-dim: #9BAA9E;
  --text-light: #1A211C;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(199, 242, 74, 0.35);
  --danger: #FF5C5C;
  --success: #36D47A;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'DIN Alternate', monospace;
  --shadow-card: 0 4px 16px rgba(0,0,0,0.40);
  --shadow-hover: 0 8px 28px rgba(0,0,0,0.55);
  --transition: 0.25s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: radial-gradient(rgba(199,242,74,0.025) 1px, transparent 1px);
  background-size: 24px 24px;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 72px 0;
}
.section-header {
  margin-bottom: 40px;
}
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  display: inline-block;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-dim);
  margin-top: 12px;
  max-width: 640px;
}
.section-header.center {
  text-align: center;
}
.section-header.center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}
.section-header.center .section-eyebrow::before {
  display: none;
}
.section-header.center .section-eyebrow::after {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  display: inline-block;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1.2;
}
.btn-primary {
  background-color: var(--primary);
  color: #0A0E0C;
  box-shadow: 0 4px 20px rgba(199,242,74,0.25);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(199,242,74,0.35);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border-strong);
  color: var(--primary);
}
.btn-secondary:hover {
  background-color: var(--primary-soft);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.btn-secondary:active {
  transform: scale(0.98);
}
.btn-ghost {
  background: transparent;
  color: var(--text-dim);
}
.btn-ghost:hover {
  color: #fff;
}
.btn:focus-visible,
.channel-tab:focus-visible,
.search-btn:focus-visible,
.menu-toggle:focus-visible,
.accordion-trigger:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn:disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* ===== 双层导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-top {
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex;
  align-items: center;
}
.header-top .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #8FBF2E 100%);
  position: relative;
  box-shadow: 0 0 16px rgba(199,242,74,0.3);
  flex-shrink: 0;
}
.brand-mark::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  border: 2px solid #0A0E0C;
  border-radius: 3px;
  transform: translate(-50%, -50%) rotate(45deg);
  border-top-color: transparent;
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.brand-text em {
  font-style: normal;
  color: var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: flex-end;
}
.header-search {
  display: flex;
  align-items: center;
  background-color: var(--bg-deep);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 0 12px;
  height: 38px;
  flex: 0 1 280px;
  transition: border-color var(--transition);
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(199,242,74,0.18);
}
.header-search svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-dim);
  margin-right: 8px;
  flex-shrink: 0;
}
.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  min-width: 0;
}
.header-search input::placeholder {
  color: #5B6B5E;
}
.header-cta .btn {
  min-height: 38px;
  padding: 0 18px;
  font-size: 14px;
}
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text);
}
.menu-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.menu-toggle .bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  margin: 3px 0;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.menu-toggle.open .bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.menu-toggle.open .bar:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open .bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}
.channel-nav {
  background-color: var(--bg-deep);
  border-bottom: 1px solid var(--border);
  height: 48px;
  overflow: hidden;
}
.channel-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  padding: 0 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.channel-tabs::-webkit-scrollbar {
  display: none;
}
.channel-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  height: 74%;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  transition: all var(--transition);
  flex-shrink: 0;
  white-space: nowrap;
  position: relative;
}
.tab-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--text-dim);
  transition: all var(--transition);
  flex-shrink: 0;
}
.channel-tab:hover {
  color: var(--text);
  background-color: var(--primary-soft);
}
.channel-tab:hover .tab-dot {
  background-color: var(--primary);
}
.channel-tab.active {
  color: var(--primary);
  background-color: var(--primary-soft);
  border: 1px solid var(--border-strong);
}
.channel-tab.active .tab-dot {
  background-color: var(--primary);
  box-shadow: 0 0 6px rgba(199,242,74,0.6);
}
.mobile-panel {
  display: none;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

/* ===== Hero Banner ===== */
.page-hero {
  position: relative;
  background-image: linear-gradient(rgba(10,14,12,0.45), rgba(10,14,12,0.85)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 88px 0 96px;
  border-bottom: 1px solid var(--border);
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: linear-gradient(rgba(10,14,12,0.3) 1px, transparent 1px), linear-gradient(90deg, rgba(10,14,12,0.3) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.page-hero .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.page-hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-soft);
  border: 1px solid var(--border-strong);
  color: var(--primary);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.page-hero .hero-tag .pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(199,242,74,0.5); }
  50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(199,242,74,0); }
}
.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.page-hero h1 .hl {
  color: var(--primary);
}
.page-hero .hero-sub {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.page-hero .hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 分类说明 ===== */
.intro-section {
  background-color: var(--bg-deep);
}
.intro-card {
  background-color: var(--bg-panel);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  padding: 48px;
  position: relative;
  overflow: hidden;
}
.intro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}
.intro-card .intro-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.intro-card h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}
.intro-card p {
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.75;
  max-width: 860px;
}
.intro-card p + p {
  margin-top: 12px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: default;
  transition: all var(--transition);
}
.tag-chip:hover {
  background: rgba(199,242,74,0.2);
  transform: translateY(-2px);
}
.tag-chip.hot {
  background: var(--secondary-soft);
  color: var(--secondary);
  border-color: rgba(255,184,56,0.3);
}
.tag-chip.hot:hover {
  background: rgba(255,184,56,0.2);
}

/* ===== 数据指标 ===== */
.metrics-section {
  background-color: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.metric-item {
  padding: 48px 32px;
  text-align: center;
  position: relative;
}
.metric-item + .metric-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 60%;
  background: var(--border);
}
.metric-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  text-transform: uppercase;
  font-weight: 500;
}
.metric-number {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 44px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.metric-number .unit {
  font-size: 18px;
  margin-left: 4px;
  color: var(--text-dim);
  font-weight: 400;
}
.metric-desc {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 10px;
}
.metric-badge {
  display: inline-block;
  background: var(--secondary-soft);
  color: var(--secondary);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 8px;
  vertical-align: middle;
}

/* ===== 推荐卡组 ===== */
.cards-section {
  background-color: var(--bg-deep);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}
.feature-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-card .card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--bg-elevated);
}
.feature-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.feature-card:hover .card-media img {
  transform: scale(1.05);
}
.feature-card .card-media::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, transparent 40%, rgba(10,14,12,0.6) 100%);
}
.feature-card .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.feature-card .card-tag.hot-tag {
  background: var(--secondary-soft);
  color: var(--secondary);
  border-color: rgba(255,184,56,0.35);
}
.feature-card .card-body {
  padding: 24px;
}
.feature-card .card-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.35;
  color: var(--text);
}
.feature-card .card-body p {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.65;
}
.feature-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--transition);
}
.feature-card .card-link:hover {
  gap: 10px;
}
.feature-card .card-link svg {
  width: 14px;
  height: 14px;
}

/* ===== 数据维度 ===== */
.dimension-section {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.dimension-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.dimension-item {
  background-color: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.dimension-item:hover {
  border-color: var(--border-strong);
  background-color: var(--primary-soft);
  transform: translateY(-4px);
}
.dimension-num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
  display: block;
  opacity: 0.7;
}
.dimension-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
  transition: all var(--transition);
}
.dimension-item:hover .dimension-icon {
  background: var(--primary);
  color: #0A0E0C;
}
.dimension-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}
.dimension-item p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-section {
  background-color: var(--bg-deep);
}
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 4px 0;
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  padding: 22px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
  background: none;
}
.accordion-trigger:hover {
  color: var(--primary);
}
.accordion-trigger .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  color: var(--text-dim);
}
.accordion-trigger .faq-icon::before,
.accordion-trigger .faq-icon::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}
.accordion-trigger .faq-icon::after {
  transform: rotate(90deg);
  transition: transform var(--transition);
}
.accordion-trigger[aria-expanded="true"] {
  color: var(--primary);
}
.accordion-trigger[aria-expanded="true"] .faq-icon {
  border-color: var(--primary);
  color: var(--primary);
  transform: rotate(180deg);
}
.accordion-trigger[aria-expanded="true"] .faq-icon::after {
  transform: rotate(0deg);
}
.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer {
  padding: 0 4px 24px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.7;
  max-width: 680px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background-image: linear-gradient(rgba(10,14,12,0.7), rgba(10,14,12,0.9)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  border-top: 1px solid var(--border);
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(255,184,56,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.cta-section .container {
  position: relative;
  z-index: 2;
  text-align: center;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text);
}
.cta-section h2 .hl {
  color: var(--secondary);
}
.cta-section p {
  color: var(--text-dim);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  background-color: var(--bg-panel);
  border-top: 1px solid var(--primary);
  box-shadow: 0 -1px 20px rgba(199,242,74,0.08);
  padding-top: 48px;
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.site-footer .footer-brand p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 360px;
}
.footer-col h4 {
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: var(--text-dim);
  font-size: 14px;
  transition: all var(--transition);
  position: relative;
  padding-left: 14px;
}
.footer-col ul li a::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 16px;
  line-height: 1.4;
}
.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 18px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  color: var(--text-dim);
  font-size: 13px;
}
.footer-bottom .legal {
  display: flex;
  gap: 16px;
}
.footer-bottom .legal a {
  color: var(--text-dim);
  font-size: 13px;
  transition: color var(--transition);
}
.footer-bottom .legal a:hover {
  color: var(--primary);
}

/* ===== 空状态 ===== */
.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  background-color: var(--bg-panel);
}
.empty-state .empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
}
.empty-state h3 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 8px;
}
.empty-state p {
  color: var(--text-dim);
  font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-item:nth-child(2)::before {
    display: none;
  }
  .metric-item:nth-child(n+3)::before {
    display: none;
  }
  .metric-item {
    padding: 36px 24px;
  }
  .dimension-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .header-search {
    flex-basis: 200px;
  }
  .page-hero h1 {
    font-size: 40px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  .container {
    padding: 0 16px;
  }
  .header-top .container {
    flex-wrap: nowrap;
  }
  .header-actions {
    display: none;
  }
  .menu-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  .mobile-panel.open {
    display: block;
  }
  .mobile-panel .mobile-search {
    display: flex;
    gap: 10px;
  }
  .mobile-panel .mobile-search .header-search {
    flex: 1;
  }
  .mobile-panel .mobile-cta {
    margin-top: 12px;
    width: 100%;
  }
  .channel-nav {
    overflow-x: auto;
  }
  .channel-tabs {
    padding: 0 16px;
    width: max-content;
    min-width: 100%;
  }
  .page-hero {
    padding: 64px 0 72px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero .hero-sub {
    font-size: 15px;
  }
  .intro-card {
    padding: 32px 24px;
  }
  .intro-card h2 {
    font-size: 22px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .features-grid {
    grid-template-columns: 1fr !important;
  }
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .footer-bottom .legal {
    justify-content: center;
    flex-wrap: wrap;
  }
  .metric-number {
    font-size: 34px;
  }
  .dimension-num {
    margin-bottom: 14px;
  }
}

@media (max-width: 576px) {
  .brand-text {
    font-size: 18px;
  }
  .brand-mark {
    width: 30px;
    height: 30px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }
  .metric-item {
    padding: 28px 16px;
  }
  .metric-number {
    font-size: 28px;
  }
  .metric-item + .metric-item::before {
    display: none;
  }
  .metric-item:nth-child(odd) {
    border-right: 1px solid var(--border);
  }
  .metric-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--border);
  }
  .dimension-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .section-title {
    font-size: 26px;
  }
  .page-hero h1 {
    font-size: 28px;
    line-height: 1.25;
  }
  .page-hero .hero-sub {
    font-size: 14px;
  }
  .page-hero .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .page-hero .hero-actions .btn {
    width: 100%;
  }
  .cta-section h2 {
    font-size: 26px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .faq-item .accordion-trigger {
    font-size: 15px;
    padding: 18px 4px;
  }
}

/* roulang page: article */
/* ===== Design Tokens ===== */
        :root {
            --bg-deep: #0A0E0C;
            --bg-panel: #101612;
            --bg-elevated: #182019;
            --bg-light: #F2F5EF;
            --primary: #C7F24A;
            --primary-hover: #D8FF66;
            --primary-soft: rgba(199, 242, 74, 0.12);
            --secondary: #FFB838;
            --secondary-soft: rgba(255, 184, 56, 0.14);
            --text: #E8EDE6;
            --text-dim: #9BAA9E;
            --text-light: #1A211C;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(199, 242, 74, 0.35);
            --danger: #FF5C5C;
            --success: #36D47A;
            --r-sm: 4px;
            --r-md: 8px;
            --r-lg: 12px;
            --r-xl: 16px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.40);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.55);
            --transition: 0.25s ease;
            --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg-deep);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

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

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

        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: transparent;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 10px 24px;
            border-radius: var(--r-md);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #0A0E0C;
            box-shadow: 0 4px 20px rgba(199, 242, 74, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(199, 242, 74, 0.35);
        }

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

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

        .btn-sm {
            min-height: 36px;
            padding: 6px 16px;
            font-size: 14px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-panel);
        }

        .header-top {
            background: var(--bg-panel);
            border-bottom: 1px solid var(--border);
        }

        .header-top .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 32px;
            height: 32px;
            border-radius: var(--r-md);
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            position: relative;
            display: block;
            box-shadow: 0 2px 12px rgba(199, 242, 74, 0.3);
        }

        .brand-mark::after {
            content: '';
            position: absolute;
            inset: 4px;
            border-radius: 5px;
            background: rgba(10, 14, 12, 0.55);
            backdrop-filter: blur(2px);
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .brand-text em {
            font-style: normal;
            color: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            justify-content: flex-end;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-deep);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--r-md);
            padding: 0 12px;
            height: 38px;
            max-width: 260px;
            flex: 1;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(199, 242, 74, 0.18);
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text);
            font-size: 14px;
            flex: 1;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: #5B6B5E;
        }

        .search-box button {
            color: var(--text-dim);
            padding: 0 2px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: color var(--transition);
        }

        .search-box button:hover {
            color: var(--primary);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--r-md);
            color: var(--text);
            transition: background var(--transition);
            flex-shrink: 0;
        }

        .menu-toggle:hover {
            background: var(--primary-soft);
        }

        .header-bottom {
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border);
        }

        .channel-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .channel-tabs::-webkit-scrollbar {
            display: none;
        }

        .channel-tab {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 14px;
            color: var(--text-dim);
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            position: relative;
        }

        .channel-tab:hover {
            color: var(--text);
        }

        .channel-tab:hover::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: -4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .channel-tab.active {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: var(--border-strong);
        }

        .channel-tab.active:hover::after {
            display: none;
        }

        .tab-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
            opacity: 0.6;
            flex-shrink: 0;
        }

        /* Mobile search panel */
        .mobile-search-panel {
            display: none;
            background: var(--bg-panel);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .site-header.mobile-open .mobile-search-panel {
            display: block;
        }

        .mobile-search-panel .search-box {
            max-width: 100%;
            width: 100%;
            height: 42px;
        }

        /* Header overlay */
        .header-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 99;
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }

        .site-header.mobile-open+.header-overlay {
            display: block;
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== Article Page ===== */
        .article-page {
            --border-color: rgba(0, 0, 0, 0.08);
            --text-sub: #6B7A6E;
            --link-green: #3C5608;
            background: var(--bg-light);
            padding: 48px 0 96px;
            min-height: 70vh;
            color: var(--text-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 32px;
            padding-top: 4px;
        }

        .breadcrumb a {
            color: #4A5A4E;
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            color: #B0BCB2;
        }

        .breadcrumb .current {
            color: var(--text-sub);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            font-weight: 500;
        }

        /* Article Card */
        .article-card {
            max-width: 856px;
            margin: 0 auto;
            background: #FFFFFF;
            border-radius: var(--r-xl);
            padding: 48px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .article-card h1 {
            font-size: 36px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            font-size: 14px;
            color: var(--text-sub);
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 32px;
        }

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

        .meta-item svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .meta-sep {
            color: #C0C8C2;
        }

        .meta-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: var(--r-sm);
            background: var(--primary-soft);
            color: var(--link-green);
            font-size: 12px;
            font-weight: 600;
        }

        .article-hero-img {
            border-radius: var(--r-lg);
            overflow: hidden;
            margin-bottom: 32px;
            position: relative;
        }

        .article-hero-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.4s ease;
        }

        .article-hero-img img:hover {
            transform: scale(1.01);
        }

        /* Article Content */
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-light);
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-light);
            padding-left: 12px;
            border-left: 4px solid var(--primary);
            margin: 40px 0 16px;
            line-height: 1.3;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            margin: 32px 0 12px;
            line-height: 1.3;
        }

        .article-content blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            border-left: 3px solid var(--primary);
            background: rgba(199, 242, 74, 0.06);
            border-radius: 0 var(--r-md) var(--r-md) 0;
            color: #37423A;
            font-size: 15px;
            line-height: 1.7;
        }

        .article-content img {
            width: 100%;
            border-radius: var(--r-lg);
            margin: 24px 0;
        }

        .article-content figcaption {
            text-align: center;
            font-size: 13px;
            color: var(--text-sub);
            margin-top: -16px;
            margin-bottom: 24px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5em 0;
            padding-left: 1.4em;
        }

        .article-content li {
            margin-bottom: 8px;
            position: relative;
        }

        .article-content a {
            color: var(--link-green);
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: color var(--transition);
        }

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

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
            overflow-x: auto;
            display: block;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border-color);
            padding: 12px;
            text-align: left;
        }

        .article-content table th {
            background: rgba(199, 242, 74, 0.08);
            font-weight: 600;
        }

        .article-content code {
            background: rgba(0, 0, 0, 0.05);
            padding: 2px 6px;
            border-radius: var(--r-sm);
            font-size: 14px;
        }

        .article-content pre {
            background: var(--bg-deep);
            color: var(--text);
            padding: 20px;
            border-radius: var(--r-lg);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.6;
        }

        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        /* Related */
        .related-section {
            max-width: 856px;
            margin: 48px auto 0;
        }

        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            gap: 16px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border-color);
        }

        .related-header h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-light);
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-sub);
            font-size: 14px;
            transition: color var(--transition);
        }

        .back-link:hover {
            color: var(--link-green);
        }

        .back-link svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            transition: transform var(--transition);
        }

        .back-link:hover svg {
            transform: translateX(-4px);
        }

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

        .related-card {
            display: block;
            background: #FFFFFF;
            border-radius: var(--r-lg);
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            transition: all var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            text-decoration: none;
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
            border-color: rgba(199, 242, 74, 0.5);
        }

        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }

        .related-card-body {
            padding: 16px;
        }

        .related-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color var(--transition);
        }

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

        .related-tag {
            display: inline-block;
            padding: 2px 8px;
            border-radius: var(--r-sm);
            font-size: 12px;
            background: var(--secondary-soft);
            color: #B26A00;
        }

        /* Not Found */
        .not-found {
            max-width: 720px;
            margin: 0 auto;
            background: #FFFFFF;
            border-radius: var(--r-xl);
            padding: 80px 48px;
            text-align: center;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }

        .not-found-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 24px;
            border-radius: 50%;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .not-found-icon svg {
            width: 28px;
            height: 28px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .not-found h1 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .not-found p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 24px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-strong);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .brand-text {
            font-size: 18px;
        }

        .footer-brand p {
            color: var(--text-dim);
            font-size: 14px;
            margin-top: 16px;
            max-width: 360px;
            line-height: 1.7;
        }

        .footer-col h4 {
            font-size: 15px;
            color: var(--text);
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: grid;
            gap: 10px;
        }

        .footer-col a {
            color: var(--text-dim);
            font-size: 14px;
            transition: color var(--transition);
            display: inline-flex;
            gap: 6px;
            align-items: center;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            color: var(--text-dim);
            font-size: 13px;
        }

        .legal {
            display: flex;
            gap: 16px;
        }

        .legal a {
            color: var(--text-dim);
            font-size: 13px;
            transition: color var(--transition);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .search-box {
                max-width: 200px;
            }

            .related-grid {
                gap: 16px;
            }

            .related-card img {
                height: 140px;
            }
        }

        @media (max-width: 768px) {
            .header-top .container {
                height: 60px;
            }

            .search-box {
                display: none;
            }

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

            .header-actions .btn {
                min-height: 38px;
                padding: 8px 16px;
                font-size: 14px;
            }

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

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

            .article-page {
                padding: 32px 0 64px;
            }

            .article-card {
                padding: 32px 24px;
                border-radius: var(--r-lg);
            }

            .article-card h1 {
                font-size: 28px;
            }

            .article-meta {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 12px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }

            .related-card {
                display: flex;
                align-items: stretch;
                height: auto;
            }

            .related-card img {
                width: 120px;
                height: auto;
                min-height: 88px;
                flex-shrink: 0;
            }

            .related-card-body {
                padding: 12px 16px;
                display: flex;
                flex-direction: column;
                justify-content: center;
                flex: 1;
            }

            .related-card h3 {
                font-size: 15px;
                margin-bottom: 6px;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }

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

            .brand-mark {
                width: 28px;
                height: 28px;
            }

            .header-actions .btn {
                padding: 8px 12px;
                font-size: 13px;
                min-height: 34px;
            }

            .header-top .container {
                height: 56px;
                gap: 12px;
            }

            .channel-tab {
                padding: 5px 12px;
                font-size: 13px;
            }

            .article-page {
                padding: 24px 0 48px;
            }

            .breadcrumb {
                margin-bottom: 20px;
                font-size: 13px;
            }

            .breadcrumb .current {
                max-width: 160px;
            }

            .article-card {
                padding: 24px 18px;
                border-radius: var(--r-lg);
            }

            .article-card h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
                padding-bottom: 16px;
                margin-bottom: 20px;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 20px;
                margin: 32px 0 12px;
            }

            .article-content h3 {
                font-size: 17px;
                margin: 24px 0 10px;
            }

            .related-section {
                margin-top: 32px;
            }

            .related-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .related-grid {
                max-width: 100%;
            }

            .related-card img {
                width: 96px;
                min-height: 76px;
            }

            .related-card h3 {
                font-size: 14px;
            }

            .not-found {
                padding: 56px 24px;
            }

            .not-found h1 {
                font-size: 22px;
            }

            .legal {
                flex-wrap: wrap;
                gap: 12px;
            }
        }

        @media (max-width: 380px) {
            .header-actions .btn {
                display: none;
            }
        }