/* roulang page: index */
:root{
  --bg-primary:#0b0f1e;
  --bg-secondary:#0e1424;
  --card-bg:rgba(255,255,255,0.06);
  --card-bg-hover:rgba(255,255,255,0.09);
  --border-color:rgba(255,255,255,0.10);
  --border-hover:rgba(30,136,255,0.5);
  --brand:#168fff;
  --brand-light:#1e88ff;
  --brand-glow:0 0 20px rgba(30,136,255,0.4);
  --accent:#ff7a00;
  --accent-glow:0 0 20px rgba(255,122,0,0.35);
  --green:#0fc98b;
  --text-primary:#e8edf7;
  --text-secondary:#9aa7bf;
  --text-muted:#5c6a85;
  --radius:12px;
  --radius-lg:16px;
  --shadow:0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover:0 14px 44px rgba(0,0,0,0.5);
  --transition:all .25s ease;
  --font-sans:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  --font-num:"DIN Alternate","Roboto Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius)}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button,input{font-family:inherit;border:none;outline:none}
ul,ol{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.section-padding{padding:clamp(4rem,8vw,6.5rem) 0}
.section-head{text-align:center;margin-bottom:3rem}
.section-head h2{
  font-size:clamp(1.5rem,3vw,1.8rem);
  font-weight:600;
  letter-spacing:.02em;
  position:relative;
  display:inline-block;
}
.section-head h2::after{
  content:"";
  position:absolute;
  left:50%;bottom:-8px;
  transform:translateX(-50%);
  width:44px;height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--brand),var(--green));
}
.section-head p{color:var(--text-secondary);margin-top:1.2rem;font-size:.95rem}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:10px 24px;
  border-radius:10px;
  font-weight:600;
  font-size:.95rem;
  cursor:pointer;
  transition:var(--transition);
  line-height:1.4;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#0fa3d8);
  color:#fff;
  box-shadow:var(--brand-glow);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 30px rgba(30,136,255,0.55);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(30,136,255,0.35)}
.btn-outline{
  background:transparent;
  border:1px solid rgba(255,255,255,0.3);
  color:var(--text-primary);
}
.btn-outline:hover{
  border-color:var(--accent);
  color:var(--accent);
  box-shadow:var(--accent-glow);
  transform:translateY(-2px);
}
.btn-outline:active{transform:translateY(0)}
.btn-lg{padding:14px 40px;font-size:1.05rem;border-radius:12px}
.btn-sm{padding:8px 18px;font-size:.85rem}
.btn:focus-visible,.faq-q:focus-visible,.hamburger:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
/* ===== Header ===== */
.site-header{
  position:absolute;
  top:0;left:0;
  width:100%;
  z-index:1000;
  background:transparent;
  transition:background .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  position:fixed;
  background:rgba(11,15,30,0.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 1px 0 rgba(255,255,255,0.08),0 8px 32px rgba(0,0,0,0.3);
}
.header-main{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-top:14px;
  padding-bottom:14px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  font-weight:700;
  font-size:1.35rem;
  letter-spacing:.02em;
  color:#fff;
}
.logo-icon{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;
  background:linear-gradient(135deg,var(--brand),var(--green));
  border-radius:10px;
  color:#fff;
  font-size:1rem;
  box-shadow:0 0 16px rgba(30,136,255,0.35);
}
.header-search{
  flex:1;
  max-width:420px;
}
.header-search form{
  display:flex;
  align-items:center;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:20px;
  padding:0 6px 0 16px;
  transition:var(--transition);
}
.header-search form:focus-within{
  background:rgba(255,255,255,0.12);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,136,255,0.15);
}
.header-search input{
  flex:1;
  background:transparent;
  color:var(--text-primary);
  padding:9px 0;
  font-size:.9rem;
  border:none;
}
.header-search input::placeholder{color:var(--text-muted)}
.header-search button{
  background:transparent;
  color:var(--text-secondary);
  width:36px;height:36px;
  border-radius:50%;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:var(--transition);
}
.header-search button:hover{color:var(--brand)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.hamburger{
  display:none;
  flex-direction:column;
  gap:5px;
  background:transparent;
  cursor:pointer;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  transition:var(--transition);
}
.hamburger span{
  display:block;
  width:22px;height:2px;
  background:var(--text-primary);
  border-radius:2px;
  transition:var(--transition);
}
.hamburger:hover{background:rgba(255,255,255,0.08)}
.nav-bar{
  background:rgba(11,15,30,0.5);
  border-top:1px solid rgba(255,255,255,0.04);
  transition:var(--transition);
}
.site-header.scrolled .nav-bar{background:transparent;border-top-color:transparent}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:44px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-links a{
  display:inline-flex;
  align-items:center;
  padding:8px 16px;
  border-radius:8px;
  font-size:.92rem;
  color:var(--text-secondary);
  font-weight:500;
  position:relative;
  transition:var(--transition);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--green));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s ease;
}
.nav-links a:hover{
  color:#fff;
  background:rgba(255,255,255,0.05);
}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{
  color:#fff;
  background:rgba(30,136,255,0.12);
}
.nav-links a.active::after{transform:scaleX(1)}
.hot-tags{
  display:flex;
  align-items:center;
  gap:14px;
}
.hot-tags a{
  font-size:.8rem;
  color:var(--text-muted);
  transition:var(--transition);
}
.hot-tags a:hover{color:var(--accent)}
/* ===== Hero ===== */
.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:140px 0 80px;
  position:relative;
  background:
    linear-gradient(180deg,rgba(11,15,30,0.88) 0%,rgba(11,15,30,0.94) 60%,var(--bg-primary) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-120px;right:-120px;
  width:480px;height:480px;
  background:radial-gradient(circle,rgba(30,136,255,0.2),transparent 70%);
  border-radius:50%;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  bottom:-80px;left:-60px;
  width:360px;height:360px;
  background:radial-gradient(circle,rgba(255,122,0,0.12),transparent 70%);
  border-radius:50%;
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:60px;
  align-items:center;
  position:relative;
  z-index:2;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  background:rgba(15,201,139,0.12);
  border:1px solid rgba(15,201,139,0.3);
  border-radius:999px;
  color:var(--green);
  font-size:.82rem;
  font-weight:500;
  margin-bottom:20px;
}
.hero-badge i{font-size:.75rem}
.hero h1{
  font-size:clamp(1.8rem,4vw,2.6rem);
  font-weight:700;
  line-height:1.2;
  color:#fff;
  margin-bottom:20px;
  letter-spacing:.01em;
}
.hero h1 .highlight{
  background:linear-gradient(135deg,var(--brand),var(--green));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-sub{
  font-size:1.05rem;
  color:var(--text-secondary);
  margin-bottom:32px;
  max-width:520px;
  line-height:1.7;
}
.hero-btns{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.hero-note{
  display:flex;
  align-items:center;
  gap:18px;
  color:var(--text-muted);
  font-size:.82rem;
  flex-wrap:wrap;
}
.hero-note span{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.hero-note i{color:var(--green);font-size:.75rem}
.hero-stats{
  display:flex;
  gap:32px;
  margin-top:36px;
  padding-top:28px;
  border-top:1px solid rgba(255,255,255,0.08);
}
.stat-item .stat-num{
  font-family:var(--font-num);
  font-size:1.6rem;
  font-weight:700;
  color:#fff;
  line-height:1.2;
}
.stat-item .stat-num em{
  font-style:normal;
  color:var(--brand-light);
}
.stat-item .stat-label{
  font-size:.8rem;
  color:var(--text-muted);
}
.hero-visual{
  position:relative;
}
.hero-visual .visual-frame{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.12);
  box-shadow:0 20px 60px rgba(0,0,0,0.5),0 0 40px rgba(30,136,255,0.12);
}
.hero-visual .visual-frame img{
  width:100%;
  height:auto;
  border-radius:var(--radius-lg);
}
.hero-visual .visual-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(30,136,255,0.1),transparent 50%);
  border-radius:var(--radius-lg);
  pointer-events:none;
}
.hero-visual .float-chip{
  position:absolute;
  bottom:24px;left:24px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 18px;
  background:rgba(11,15,30,0.75);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:12px;
  font-size:.82rem;
  color:var(--text-primary);
}
.float-chip .dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--green);
  box-shadow:0 0 8px var(--green);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.5;transform:scale(1.3)}
}
/* ===== Comparison ===== */
.comparison{background:var(--bg-primary);position:relative}
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  max-width:960px;
  margin:0 auto;
}
.compare-card{
  background:var(--card-bg);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  padding:2rem 2rem 2.5rem;
  box-shadow:var(--shadow);
  position:relative;
  transition:var(--transition);
}
.compare-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.compare-card.vip{
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(30,136,255,0.4);
  box-shadow:0 0 40px rgba(30,136,255,0.15),var(--shadow);
}
.compare-card.vip:hover{
  border-color:rgba(30,136,255,0.7);
  box-shadow:0 0 50px rgba(30,136,255,0.25),var(--shadow-hover);
}
.recommend-badge{
  position:absolute;
  top:-14px;right:24px;
  background:linear-gradient(135deg,var(--accent),#ff9a3c);
  color:#fff;
  font-size:.75rem;
  font-weight:600;
  padding:4px 16px;
  border-radius:999px;
  box-shadow:0 4px 16px rgba(255,122,0,0.35);
  letter-spacing:.05em;
}
.compare-card h3{
  font-size:1.3rem;
  font-weight:600;
  margin-bottom:1.2rem;
  display:flex;
  align-items:center;
  gap:10px;
}
.compare-card h3 i{
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  font-size:.9rem;
}
.guest h3 i{background:rgba(255,255,255,0.08);color:var(--text-muted)}
.vip h3 i{background:rgba(30,136,255,0.2);color:var(--brand-light)}
.compare-card ul li{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
  font-size:.92rem;
  color:var(--text-secondary);
}
.compare-card ul li:last-child{border-bottom:none}
.compare-card ul li .icon{
  width:20px;height:20px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  font-size:.65rem;
  flex-shrink:0;
}
.icon-check{background:rgba(15,201,139,0.15);color:var(--green)}
.icon-times{background:rgba(255,255,255,0.08);color:var(--text-muted)}
.vip .price-row{
  margin-top:1.5rem;
  padding-top:1.2rem;
  border-top:1px solid rgba(255,255,255,0.1);
  display:flex;
  align-items:baseline;
  gap:8px;
}
.vip .price-row .price{
  font-family:var(--font-num);
  font-size:1.8rem;
  font-weight:700;
  color:#fff;
}
.vip .price-row .period{color:var(--text-muted);font-size:.85rem}
/* ===== Perks ===== */
.perks{background:var(--bg-secondary);position:relative;overflow:hidden}
.perks::before{
  content:"";
  position:absolute;
  top:0;right:0;
  width:100%;height:100%;
  background:radial-gradient(circle at 80% 20%,rgba(30,136,255,0.08),transparent 50%);
  pointer-events:none;
}
.perks-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:24px;
  position:relative;
  z-index:2;
}
.perk-card{
  background:var(--card-bg);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  padding:2rem;
  box-shadow:var(--shadow);
  transition:var(--transition);
}
.perk-card:hover{
  transform:translateY(-4px);
  border-color:var(--border-hover);
  box-shadow:var(--shadow-hover);
}
.perk-card .perk-icon{
  width:48px;height:48px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;
  margin-bottom:1.2rem;
  background:linear-gradient(135deg,rgba(30,136,255,0.2),rgba(15,201,139,0.15));
  color:var(--brand-light);
  border:1px solid rgba(30,136,255,0.2);
}
.perk-card.wide .perk-icon{
  background:linear-gradient(135deg,rgba(255,122,0,0.2),rgba(30,136,255,0.15));
  color:var(--accent);
  border-color:rgba(255,122,0,0.25);
}
.perk-card h3{
  font-size:1.1rem;
  font-weight:600;
  margin-bottom:.6rem;
  color:#fff;
}
.perk-card p{
  font-size:.9rem;
  color:var(--text-secondary);
  line-height:1.7;
}
.perk-card.wide p{font-size:.95rem}
/* ===== Premium Preview ===== */
.premium{background:var(--bg-primary);position:relative}
.premium-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.premium-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.1);
  box-shadow:var(--shadow);
}
.premium-visual img{
  width:100%;
  height:auto;
  border-radius:var(--radius-lg);
  transition:transform .5s ease;
}
.premium-visual:hover img{transform:scale(1.02)}
.premium-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(11,15,30,0.4));
  border-radius:var(--radius-lg);
}
.premium-content h2{
  font-size:clamp(1.5rem,3vw,1.9rem);
  font-weight:600;
  margin-bottom:1.5rem;
  color:#fff;
}
.premium-list{
  display:flex;
  flex-direction:column;
  gap:16px;
  margin-bottom:2rem;
}
.premium-list li{
  display:flex;
  align-items:center;
  gap:16px;
  padding:14px 18px;
  background:var(--card-bg);
  border:1px solid var(--border-color);
  border-radius:var(--radius);
  transition:var(--transition);
}
.premium-list li:hover{
  border-color:rgba(30,136,255,0.4);
  background:rgba(255,255,255,0.08);
  transform:translateX(4px);
}
.premium-list li .lock-icon{
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:rgba(30,136,255,0.15);
  color:var(--brand-light);
  font-size:.85rem;
  flex-shrink:0;
}
.premium-list li .li-text{flex:1}
.premium-list li .li-title{
  font-size:.95rem;
  font-weight:500;
  color:var(--text-primary);
}
.premium-list li .li-meta{
  font-size:.8rem;
  color:var(--text-muted);
  margin-top:2px;
}
.premium-list li .li-badge{
  font-size:.72rem;
  padding:2px 10px;
  background:rgba(255,122,0,0.15);
  color:var(--accent);
  border-radius:999px;
  white-space:nowrap;
}
.premium-unlocked{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:1rem;
  color:var(--text-muted);
  font-size:.85rem;
}
.premium-unlocked .progress{
  flex:1;
  max-width:160px;
  height:6px;
  background:rgba(255,255,255,0.08);
  border-radius:3px;
  overflow:hidden;
}
.premium-unlocked .progress-bar{
  height:100%;
  width:25%;
  background:linear-gradient(90deg,var(--brand),var(--green));
  border-radius:3px;
}
/* ===== News Section ===== */
.news-section{background:var(--bg-secondary);position:relative}
.news-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.news-card{
  background:var(--card-bg);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:var(--transition);
  display:flex;
  flex-direction:column;
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:var(--border-hover);
  box-shadow:var(--shadow-hover);
}
.news-card .news-thumb{
  height:160px;
  background:linear-gradient(135deg,#1a2340,#0e1424);
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
}
.news-thumb i{
  font-size:2rem;
  color:rgba(255,255,255,0.15);
}
.news-thumb .cate-badge{
  position:absolute;
  top:14px;left:14px;
  padding:4px 12px;
  background:rgba(11,15,30,0.85);
  color:var(--accent);
  font-size:.72rem;
  border-radius:999px;
  backdrop-filter:blur(4px);
  border:1px solid rgba(255,122,0,0.2);
}
.news-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.news-body h3{
  font-size:1rem;
  font-weight:600;
  line-height:1.5;
  margin-bottom:.6rem;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body h3 a{color:var(--text-primary)}
.news-body h3 a:hover{color:var(--brand-light)}
.news-body p{
  font-size:.85rem;
  color:var(--text-secondary);
  line-height:1.6;
  flex:1;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:14px;
  padding-top:12px;
  border-top:1px solid rgba(255,255,255,0.06);
  font-size:.8rem;
  color:var(--text-muted);
}
.news-meta .read-more{
  color:var(--brand-light);
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:var(--transition);
}
.news-meta .read-more i{font-size:.72rem;transition:transform .25s ease}
.news-meta .read-more:hover{color:var(--accent)}
.news-meta .read-more:hover i{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:60px 20px;
  background:var(--card-bg);
  border:1px dashed rgba(255,255,255,0.15);
  border-radius:var(--radius);
  color:var(--text-muted);
  font-size:.95rem;
}
/* ===== FAQ ===== */
.faq-section{background:var(--bg-primary)}
.faq-grid{
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:50px;
  align-items:start;
}
.faq-left h2{
  font-size:clamp(1.5rem,3vw,1.8rem);
  font-weight:600;
  margin-bottom:1rem;
  color:#fff;
}
.faq-left p{
  color:var(--text-secondary);
  margin-bottom:1.5rem;
  font-size:.95rem;
}
.faq-left .contact-card{
  background:var(--card-bg);
  border:1px solid var(--border-color);
  border-radius:var(--radius);
  padding:1.5rem;
  margin-top:1.5rem;
}
.faq-left .contact-card h4{
  font-size:.95rem;
  margin-bottom:.4rem;
  color:#fff;
}
.faq-left .contact-card p{
  margin-bottom:1rem;
  font-size:.85rem;
  color:var(--text-muted);
}
.faq-items{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--border-color);
  border-radius:var(--radius);
  overflow:hidden;
  transition:var(--transition);
}
.faq-item.active{
  border-color:rgba(30,136,255,0.4);
  background:rgba(255,255,255,0.08);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:transparent;
  color:var(--text-primary);
  font-size:.95rem;
  font-weight:500;
  cursor:pointer;
  text-align:left;
  transition:var(--transition);
}
.faq-q i{
  font-size:.8rem;
  color:var(--text-muted);
  transition:transform .3s ease;
  flex-shrink:0;
}
.faq-item.active .faq-q i{
  transform:rotate(180deg);
  color:var(--brand-light);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.active .faq-a{
  max-height:300px;
}
.faq-a p{
  padding:0 20px 18px;
  font-size:.88rem;
  color:var(--text-secondary);
  line-height:1.75;
}
/* ===== CTA ===== */
.cta-section{
  padding:clamp(4rem,8vw,6rem) 0;
  position:relative;
  background:
    linear-gradient(135deg,rgba(30,136,255,0.15),rgba(11,15,30,0.9) 60%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  text-align:center;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  width:600px;height:300px;
  background:radial-gradient(ellipse,rgba(30,136,255,0.15),transparent 70%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2}
.cta-section h2{
  font-size:clamp(1.6rem,4vw,2.2rem);
  font-weight:700;
  color:#fff;
  margin-bottom:1rem;
}
.cta-section .cta-sub{
  color:var(--text-secondary);
  font-size:1rem;
  margin-bottom:2rem;
}
.cta-section .cta-plan{
  display:flex;
  justify-content:center;
  gap:24px;
  margin-top:1.5rem;
  color:var(--text-muted);
  font-size:.85rem;
  flex-wrap:wrap;
}
.cta-section .cta-plan span{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.cta-section .cta-plan i{color:var(--green);font-size:.75rem}
/* ===== Footer ===== */
.site-footer{
  background:#080b16;
  border-top:1px solid rgba(255,255,255,0.05);
  padding-top:4rem;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:800px;height:120px;
  background:radial-gradient(ellipse,rgba(30,136,255,0.06),transparent 70%);
  pointer-events:none;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:3rem;
}
.footer-brand h3{
  font-size:1.3rem;
  font-weight:700;
  color:#fff;
  margin-bottom:.6rem;
  display:flex;
  align-items:center;
  gap:10px;
}
.footer-brand p{
  color:var(--text-muted);
  font-size:.87rem;
  line-height:1.7;
}
.footer-links h4{
  color:#fff;
  font-size:.95rem;
  font-weight:600;
  margin-bottom:1rem;
}
.footer-links a{
  display:block;
  padding:4px 0;
  color:var(--text-muted);
  font-size:.87rem;
  transition:var(--transition);
}
.footer-links a:hover{
  color:var(--brand-light);
  padding-left:4px;
}
.footer-contact h4{
  color:#fff;
  font-size:.95rem;
  font-weight:600;
  margin-bottom:1rem;
}
.footer-contact p{
  color:var(--text-muted);
  font-size:.85rem;
  margin-bottom:.5rem;
  display:flex;
  align-items:center;
  gap:8px;
}
.footer-contact i{color:var(--brand-light);font-size:.8rem;width:16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.05);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  color:var(--text-muted);
  font-size:.8rem;
  flex-wrap:wrap;
}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--brand-light)}
/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:600px}
  .perks-grid{grid-template-columns:1fr 1fr}
  .perk-card.wide{grid-column:1/-1}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .premium-grid{grid-template-columns:1fr;gap:40px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media screen and (max-width:768px){
  .header-search{display:none}
  .hamburger{
    display:flex;
  }
  .header-actions .btn-sm{display:none}
  .nav-bar{
    position:fixed;
    top:0;left:0;
    width:100%;
    height:100%;
    background:rgba(11,15,30,0.96);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    z-index:999;
    transform:translateX(-100%);
    transition:transform .35s ease;
    overflow-y:auto;
    padding-top:70px;
  }
  .site-header.menu-open .nav-bar{
    transform:translateX(0);
  }
  .nav-inner{
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    gap:20px;
    padding:24px;
    min-height:auto;
  }
  .nav-links{
    flex-direction:column;
    align-items:flex-start;
    width:100%;
    gap:4px;
  }
  .nav-links a{
    width:100%;
    font-size:1.05rem;
    padding:12px 16px;
  }
  .hot-tags{
    flex-wrap:wrap;
    gap:10px;
    padding-top:16px;
    border-top:1px solid rgba(255,255,255,0.08);
    width:100%;
  }
  .hot-tags a{
    font-size:.85rem;
    padding:6px 14px;
    background:rgba(255,255,255,0.05);
    border-radius:999px;
  }
  .site-header.menu-open .hamburger span:nth-child(1){
    transform:translateY(7px) rotate(45deg);
  }
  .site-header.menu-open .hamburger span:nth-child(2){
    opacity:0;
  }
  .site-header.menu-open .hamburger span:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
  }
  .compare-grid{grid-template-columns:1fr}
  .hero{padding:120px 0 60px}
  .hero-stats{flex-wrap:wrap;gap:20px}
  .cta-plan{flex-direction:column;gap:10px}
}
@media screen and (max-width:640px){
  .container{padding:0 18px}
  .news-grid{grid-template-columns:1fr}
  .perks-grid{grid-template-columns:1fr}
  .perk-card.wide{grid-column:auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-note{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn{width:100%}
  .compare-card{padding:1.5rem}
  .faq-item .faq-q{font-size:.88rem}
}

/* roulang page: category1 */
:root {
  --bg-primary: #0b0f1e;
  --bg-secondary: #0e1424;
  --bg-card: rgba(255,255,255,0.05);
  --bg-card-hover: rgba(255,255,255,0.08);
  --border-card: rgba(255,255,255,0.08);
  --border-hover: rgba(30,136,255,0.5);
  --primary: #1e88ff;
  --primary-glow: rgba(30,136,255,0.4);
  --accent: #ff7a00;
  --accent-glow: rgba(255,122,0,0.35);
  --green: #0fc98b;
  --text-main: #e8edf7;
  --text-secondary: #9aa7bf;
  --text-weak: #5c6a85;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-btn: 0 0 20px rgba(30,136,255,0.4);
  --section-padding: clamp(4rem, 7vw, 6rem);
  --trans: all .3s cubic-bezier(.4,0,.2,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--trans); }
button, input { font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.grid-container { max-width: 1280px; padding: 0 24px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 24px; border-radius: 10px; font-weight: 600; font-size: .95rem;
  border: 1px solid transparent; cursor: pointer; transition: var(--trans); line-height: 1.5;
}
.btn-primary {
  background: linear-gradient(135deg, #1e88ff, #00c6b4);
  color: #fff; box-shadow: var(--shadow-btn);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(30,136,255,.55); }
.btn-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent; border-color: rgba(255,255,255,.3); color: var(--text-main);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 16px var(--accent-glow); }
.btn-outline:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-sm { padding: 7px 16px; font-size: .85rem; }

/* ===== Header ===== */
.site-header {
  position: relative; z-index: 100; background: rgba(11,15,30,.92);
  border-bottom: 1px solid rgba(255,255,255,.05); backdrop-filter: blur(12px);
}
.site-header.is-sticky {
  position: fixed; top: 0; left: 0; width: 100%;
  background: rgba(11,15,30,.88); box-shadow: 0 8px 30px rgba(0,0,0,.4);
}
.header-top { border-bottom: 1px solid rgba(255,255,255,.04); }
.header-top-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 20px; }
.brand-logo {
  display: flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 700; letter-spacing: 1px;
  color: var(--text-main);
}
.logo-icon {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1e88ff, #00c6b4); border-radius: 10px; color: #fff; font-size: .95rem;
  box-shadow: 0 0 14px var(--primary-glow);
}
.header-actions { display: flex; align-items: center; gap: 16px; }
.search-box {
  position: relative; display: flex; align-items: center;
}
.search-box .search-icon { position: absolute; left: 14px; color: var(--text-weak); font-size: .9rem; pointer-events: none; }
.search-box input {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  border-radius: 20px; padding: 8px 16px 8px 38px; color: var(--text-main);
  font-size: .85rem; width: 220px; outline: none; transition: var(--trans);
}
.search-box input::placeholder { color: var(--text-weak); }
.search-box input:focus { background: rgba(255,255,255,.1); border-color: var(--primary); box-shadow: 0 0 12px rgba(30,136,255,.2); width: 260px; }
.menu-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 1.4rem; cursor: pointer; padding: 8px; }
.menu-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.nav-bar { border-bottom: 1px solid rgba(255,255,255,.03); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; min-height: 46px; gap: 16px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 18px; border-radius: 8px; font-size: .9rem; font-weight: 500;
  color: var(--text-secondary); position: relative; transition: var(--trans);
}
.nav-links a:hover { color: var(--text-main); background: rgba(255,255,255,.04); }
.nav-links a.active { color: #fff; background: rgba(30,136,255,.12); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 2px; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--green)); border-radius: 2px;
}
.hot-tags { display: flex; align-items: center; gap: 14px; }
.hot-tags a { font-size: .82rem; color: var(--text-weak); transition: var(--trans); }
.hot-tags a:hover { color: var(--accent); }

/* ===== 分类 Hero ===== */
.category-hero {
  position: relative; padding: clamp(3.5rem, 6vw, 5.5rem) 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.category-hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(11,15,30,.94) 20%, rgba(14,20,36,.75) 60%, rgba(11,15,30,.6));
}
.category-hero .hero-content { position: relative; z-index: 2; max-width: 780px; }
.category-hero .hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 16px;
  background: rgba(30,136,255,.15); border: 1px solid rgba(30,136,255,.3);
  border-radius: 999px; font-size: .82rem; color: #7cb8ff; margin-bottom: 20px;
}
.category-hero h1 {
  font-size: clamp(1.9rem, 4.2vw, 2.7rem); font-weight: 700; margin-bottom: 16px; line-height: 1.2;
}
.category-hero p.subtitle {
  font-size: clamp(1rem, 1.6vw, 1.15rem); color: var(--text-secondary); line-height: 1.8; margin-bottom: 28px; max-width: 640px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ===== 板块通用 ===== */
.section-block { padding: var(--section-padding) 0; position: relative; }
.section-title { font-size: clamp(1.4rem, 2.4vw, 1.8rem); font-weight: 600; margin-bottom: 12px; }
.section-subtitle { color: var(--text-secondary); font-size: .95rem; margin-bottom: 36px; max-width: 680px; line-height: 1.8; }

/* ===== 主内容 + 侧边栏 ===== */
.page-main { padding: clamp(3rem, 5vw, 4.5rem) 0; }
.main-content { display: flex; flex-direction: column; gap: 0; }
.content-card {
  background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.2rem); backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card); transition: var(--trans); margin-bottom: 28px;
}
.content-card:hover { border-color: rgba(30,136,255,.35); }
.content-card h2 { font-size: 1.45rem; font-weight: 600; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.content-card h2 i { color: var(--primary); font-size: 1.2rem; }
.content-card p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.content-card .lead { font-size: 1rem; color: var(--text-main); }

/* 图文混排 */
.media-row { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: center; margin-top: 20px; }
.media-row img { border-radius: var(--radius); border: 1px solid rgba(255,255,255,.08); }
.media-row .media-text { color: var(--text-secondary); font-size: .95rem; line-height: 1.85; }

/* 资讯类型宽幅列表 */
.type-list { display: flex; flex-direction: column; }
.type-item {
  display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.05);
  transition: var(--trans);
}
.type-item:last-child { border-bottom: none; }
.type-item:hover { padding-left: 10px; border-bottom-color: rgba(30,136,255,.3); }
.type-item .type-icon {
  flex-shrink: 0; width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(30,136,255,.2), rgba(0,198,180,.15));
  border: 1px solid rgba(30,136,255,.25); display: flex; align-items: center; justify-content: center;
  color: #7cb8ff; font-size: 1.15rem;
}
.type-item h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.type-item p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; margin: 0; }

/* 适用场景 */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 16px; }
.scene-item {
  background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius); padding: 20px; transition: var(--trans);
}
.scene-item:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-card); background: var(--bg-card-hover); }
.scene-item .scene-num {
  font-size: 2rem; font-weight: 700; font-family: "DIN Alternate", "Roboto Mono", monospace;
  color: rgba(30,136,255,.35); line-height: 1; margin-bottom: 10px;
}
.scene-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-main); }
.scene-item p { font-size: .85rem; color: var(--text-secondary); line-height: 1.7; margin: 0; }

/* 流程步骤 */
.process-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 20px; position: relative; }
.process-steps::before {
  content: ""; position: absolute; top: 28px; left: 15%; right: 15%; height: 2px;
  background: linear-gradient(90deg, rgba(30,136,255,.3), rgba(0,198,180,.3));
  border-radius: 2px; z-index: 0;
}
.process-step { text-align: center; position: relative; z-index: 1; }
.process-step .step-icon {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 14px;
  background: linear-gradient(135deg, var(--primary), var(--green)); display: flex; align-items: center;
  justify-content: center; color: #fff; font-size: 1.2rem; box-shadow: 0 0 20px rgba(30,136,255,.35);
  border: 3px solid var(--bg-primary);
}
.process-step h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.process-step p { font-size: .85rem; color: var(--text-secondary); line-height: 1.65; max-width: 200px; margin: 0 auto; }

/* FAQ */
.faq-wrap { display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid rgba(255,255,255,.06); border-radius: var(--radius); overflow: hidden; background: rgba(255,255,255,.03); transition: var(--trans); }
.faq-item:hover { border-color: rgba(30,136,255,.3); }
.faq-question {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 16px 20px; cursor: pointer; font-weight: 500; font-size: .95rem;
}
.faq-question .faq-icon { color: var(--primary); transition: var(--trans); }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-answer p { padding: 0 20px 16px; color: var(--text-secondary); font-size: .9rem; line-height: 1.75; }

/* ===== 侧边栏 ===== */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg); padding: 24px; backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}
.sidebar-card h3 {
  font-size: 1.05rem; font-weight: 600; margin-bottom: 16px;
  padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); }
.sidebar-nav { list-style: none; }
.sidebar-nav li { margin-bottom: 8px; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px; padding: 9px 14px;
  border-radius: 8px; font-size: .88rem; color: var(--text-secondary); transition: var(--trans);
}
.sidebar-nav a i { font-size: .8rem; color: var(--text-weak); transition: var(--trans); }
.sidebar-nav a:hover { background: rgba(30,136,255,.1); color: var(--text-main); padding-left: 18px; }
.sidebar-nav a:hover i { color: var(--primary); }
.sidebar-tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: 999px; background: rgba(30,136,255,.12); color: #7cb8ff; font-size: .78rem; margin: 4px 4px 4px 0; }

/* 侧边栏会员卡 */
.sidebar-vip { text-align: center; padding: 28px 24px; }
.sidebar-vip .vip-icon {
  width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 14px;
  background: linear-gradient(135deg, var(--accent), #ffb347); display: flex; align-items: center;
  justify-content: center; color: #fff; font-size: 1.5rem; box-shadow: 0 0 24px rgba(255,122,0,.3);
}
.sidebar-vip h3 { border-bottom: none; padding-bottom: 0; justify-content: center; font-size: 1.1rem; }
.sidebar-vip p { color: var(--text-secondary); font-size: .85rem; margin-bottom: 18px; line-height: 1.7; }
.sidebar-vip .btn { width: 100%; }

/* ===== CTA ===== */
.cta-section {
  padding: clamp(3rem, 5vw, 5rem) 0; position: relative; overflow: hidden;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.cta-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11,15,30,.9), rgba(14,20,36,.95)); }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; margin-bottom: 14px; }
.cta-inner p { color: var(--text-secondary); font-size: .95rem; margin-bottom: 28px; line-height: 1.8; }
.cta-inner .cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.cta-inner .cta-note { color: var(--text-weak); font-size: .82rem; }

/* ===== Footer ===== */
.site-footer {
  background: #080c18; border-top: 1px solid rgba(255,255,255,.04); padding: clamp(3rem, 5vw, 4.5rem) 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 32px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.04);
}
.footer-brand h3 { display: flex; align-items: center; gap: 10px; font-size: 1.15rem; font-weight: 700; margin-bottom: 14px; }
.footer-brand p { color: var(--text-secondary); font-size: .88rem; line-height: 1.75; max-width: 320px; }
.footer-links h4, .footer-contact h4 { font-size: .95rem; font-weight: 600; margin-bottom: 16px; color: var(--text-main); }
.footer-links a { display: block; color: var(--text-secondary); font-size: .85rem; padding: 4px 0; }
.footer-links a:hover { color: var(--primary); }
.footer-contact p { color: var(--text-secondary); font-size: .85rem; padding: 4px 0; display: flex; align-items: center; gap: 8px; }
.footer-contact i { color: var(--primary); width: 16px; text-align: center; }
.footer-bottom {
  padding: 18px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
}
.footer-bottom p { color: var(--text-weak); font-size: .82rem; margin: 0; }

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  .media-row { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .search-box input { width: 160px; }
  .search-box input:focus { width: 190px; }
}
@media screen and (max-width: 768px) {
  .header-top-inner { min-height: 58px; }
  .menu-toggle { display: block; }
  .header-actions { display: none; }
  .nav-bar { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(11,15,30,.97); }
  .nav-bar.is-open { display: block; }
  .nav-inner { flex-direction: column; align-items: stretch; padding: 16px 24px; gap: 12px; }
  .nav-links { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-links a { padding: 12px 16px; }
  .nav-links a.active::after { display: none; }
  .hot-tags { flex-wrap: wrap; padding: 8px 0 4px; border-top: 1px solid rgba(255,255,255,.05); padding-top: 16px; }
  .hot-tags a { padding: 4px 0; }
  .category-hero { padding: 3rem 0; }
  .category-hero::before { background: linear-gradient(180deg, rgba(11,15,30,.94), rgba(14,20,36,.8)); }
  .scene-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 32px; }
  .process-steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media screen and (max-width: 520px) {
  .container, .grid-container { padding: 0 16px; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
  .section-block { padding: 3rem 0; }
  .content-card { padding: 1.5rem 1.2rem; }
  .type-item { flex-direction: column; gap: 12px; }
  .type-item .type-icon { width: 42px; height: 42px; }
  .cta-btns { flex-direction: column; align-items: stretch; }
  .cta-btns .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media screen and (min-width: 641px) {
  .nav-bar { display: block !important; }
}

/* roulang page: article */
:root {
            --bg-primary: #0b0f1e;
            --bg-secondary: #0e1424;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.10);
            --border-card: rgba(255, 255, 255, 0.10);
            --border-card-hover: rgba(30, 136, 255, 0.50);
            --primary: #168fff;
            --primary-dark: #1e88ff;
            --accent: #ff7a00;
            --success: #0fc98b;
            --text-main: #e8edf7;
            --text-secondary: #9aa7bf;
            --text-muted: #5c6a85;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --glow-primary: 0 0 20px rgba(30, 136, 255, 0.40);
            --glow-accent: 0 0 20px rgba(255, 122, 0, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-num: "DIN Alternate", "Roboto Mono", monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button {
            font-family: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        ul,
        ol {
            list-style-position: inside;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            width: 100%;
        }

        .container-narrow {
            max-width: 780px;
            margin: 0 auto;
        }

        .text-center {
            text-align: center;
        }

        .section {
            padding: clamp(4rem, 8vw, 6.5rem) 0;
        }

        /* ===== Header ===== */
        .site-header {
            position: relative;
            z-index: 100;
            background: rgba(11, 15, 30, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: box-shadow 0.3s ease;
        }

        .site-header.is-sticky {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            box-shadow: var(--shadow-card);
        }

        .header-top {
            padding: 12px 0;
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.28rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .logo-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--success));
            border-radius: 10px;
            color: #fff;
            font-size: 0.9rem;
            box-shadow: 0 0 12px rgba(30, 136, 255, 0.35);
            flex-shrink: 0;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
        }

        .search-box form {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 20px;
            padding: 2px 4px 2px 14px;
            transition: border-color 0.2s, background 0.2s;
        }

        .search-box form:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.10);
        }

        .search-box form i {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            padding: 7px 10px;
            font-size: 0.85rem;
            width: 180px;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            padding: 6px 16px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }

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

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            color: var(--text-main);
            font-size: 1.2rem;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }

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

        /* ===== Nav Bar ===== */
        .nav-bar {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(14, 20, 36, 0.60);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            height: 48px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }

        .nav-links a:hover {
            color: var(--text-main);
            border-bottom-color: var(--primary);
        }

        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--accent);
            font-weight: 600;
        }

        .mobile-search {
            display: none;
        }

        .hot-tags {
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .hot-tags a {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: color 0.2s;
            white-space: nowrap;
        }

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

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.4;
            transition: all 0.25s ease;
            cursor: pointer;
            text-decoration: none;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00b0ff);
            color: #fff;
            box-shadow: var(--glow-primary);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            background: linear-gradient(135deg, #168fff, #24b9ff);
            box-shadow: 0 0 28px rgba(30, 136, 255, 0.55);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(30, 136, 255, 0.4);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.30);
            color: var(--text-main);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: var(--glow-accent);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 14px 38px;
            font-size: 1.05rem;
            border-radius: 14px;
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 0.85rem;
            border-radius: 8px;
        }

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

        /* ===== Badges ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            line-height: 1.4;
        }

        .badge-primary {
            background: rgba(30, 136, 255, 0.15);
            color: #6bb4ff;
        }

        .badge-accent {
            background: rgba(255, 122, 0, 0.15);
            color: #ffa75a;
        }

        .badge-success {
            background: rgba(15, 201, 139, 0.15);
            color: #3de0aa;
        }

        .badge-dark {
            background: rgba(0, 0, 0, 0.40);
            color: #fff;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 4rem 0 3.2rem;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 30, 0.88) 0%, rgba(14, 20, 36, 0.96) 100%);
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
            max-width: 920px;
            text-align: center;
        }

        .breadcrumb {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }

        .breadcrumb i {
            font-size: 0.7rem;
            opacity: 0.6;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s;
        }

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

        .article-hero h1 {
            font-size: clamp(1.6rem, 4vw, 2.5rem);
            font-weight: 700;
            line-height: 1.35;
            color: #fff;
            margin-bottom: 1.2rem;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 20px;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

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

        .article-meta .meta-cat {
            background: rgba(255, 122, 0, 0.15);
            color: #ffa75a;
            padding: 3px 14px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        .num {
            font-family: var(--font-num);
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 3rem 0 4.5rem;
            background: var(--bg-primary);
        }

        .article-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: clamp(1.4rem, 3vw, 2.4rem);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .article-content {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.85;
        }

        .article-content h2 {
            font-size: 1.5rem;
            color: var(--text-main);
            margin: 2.2rem 0 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
            font-weight: 600;
        }

        .article-content h3 {
            font-size: 1.2rem;
            color: var(--text-main);
            margin: 1.8rem 0 0.8rem;
            font-weight: 600;
        }

        .article-content h4 {
            font-size: 1.05rem;
            color: var(--text-main);
            margin: 1.5rem 0 0.6rem;
            font-weight: 600;
        }

        .article-content p {
            margin-bottom: 1.2rem;
        }

        .article-content img {
            border-radius: 12px;
            width: 100%;
            object-fit: cover;
            margin: 1.2rem 0;
        }

        .article-content figure {
            margin: 1.5rem 0;
        }

        .article-content figure img {
            margin: 0;
        }

        .article-content figcaption {
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 0.6rem 0 0;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(30, 136, 255, 0.07);
            padding: 1rem 1.4rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
            color: var(--text-secondary);
        }

        .article-content blockquote p {
            margin-bottom: 0;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.4rem;
            margin-bottom: 1.2rem;
        }

        .article-content li {
            margin-bottom: 0.4rem;
        }

        .article-content ul li {
            list-style: none;
            position: relative;
            padding-left: 0.6rem;
        }

        .article-content ul li::before {
            content: '';
            position: absolute;
            left: -0.6rem;
            top: 0.7em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            transform: translateX(-50%);
        }

        .article-content ol li {
            list-style: decimal;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1.2rem;
            font-size: 0.92rem;
        }

        .article-content th,
        .article-content td {
            border: 1px solid rgba(255, 255, 255, 0.10);
            padding: 0.6rem 0.9rem;
            text-align: left;
            color: var(--text-secondary);
        }

        .article-content th {
            background: rgba(30, 136, 255, 0.08);
            color: var(--text-main);
            font-weight: 600;
        }

        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            font-family: var(--font-num);
            color: #ffa75a;
        }

        .article-content pre {
            background: rgba(0, 0, 0, 0.30);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 1.2rem;
            overflow: auto;
            margin-bottom: 1.2rem;
        }

        .article-content pre code {
            background: transparent;
            padding: 0;
            color: var(--text-main);
        }

        .article-content a {
            color: #6bb4ff;
            border-bottom: 1px solid rgba(107, 180, 255, 0.4);
        }

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

        .article-empty {
            text-align: center;
            padding: 4rem 1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
        }

        .article-empty i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .article-empty p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 4rem 0;
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-head {
            text-align: center;
            margin-bottom: 2.6rem;
        }

        .section-head .section-badge {
            display: inline-flex;
            margin-bottom: 0.8rem;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 1.9rem);
            color: var(--text-main);
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }

        .section-head p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 2.5rem;
        }

        .related-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-card-hover);
            box-shadow: var(--shadow-card);
        }

        .related-thumb {
            position: relative;
            height: 165px;
            overflow: hidden;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

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

        .related-thumb .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.10);
        }

        .related-body {
            padding: 1.25rem 1.3rem 1.1rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-body h3 {
            font-size: 1rem;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 0.5rem;
            font-weight: 600;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.8rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 0.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .related-meta .read-link {
            color: var(--text-secondary);
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 500;
        }

        .related-meta .read-link:hover {
            color: var(--primary);
        }

        .related-meta .read-link i {
            transition: transform 0.2s;
            font-size: 0.75rem;
        }

        .related-meta .read-link:hover i {
            transform: translateX(4px);
        }

        .section-footer {
            text-align: center;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: clamp(4rem, 8vw, 5.5rem) 0;
            background: var(--bg-primary);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 2.5rem;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-card);
            border-radius: var(--radius);
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.25);
        }

        .faq-item.open {
            border-color: rgba(30, 136, 255, 0.50);
            box-shadow: 0 0 20px rgba(30, 136, 255, 0.10);
        }

        .faq-q {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            padding: 1.1rem 1.3rem;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            line-height: 1.5;
            min-height: 48px;
        }

        .faq-q .faq-icon {
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(30, 136, 255, 0.12);
            color: var(--primary);
            font-size: 0.85rem;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-q .faq-icon {
            transform: rotate(180deg);
            background: rgba(30, 136, 255, 0.25);
        }

        .faq-a {
            display: none;
            padding: 0 1.3rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.85;
        }

        .faq-note {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .faq-note a {
            color: var(--primary);
            border-bottom: 1px solid rgba(30, 136, 255, 0.3);
        }

        .faq-note a:hover {
            color: #6bb4ff;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            position: relative;
            padding: clamp(4rem, 8vw, 6rem) 0;
            background: linear-gradient(135deg, #0e1424 0%, #14264d 100%);
            text-align: center;
            overflow: hidden;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 640px;
            height: 640px;
            background: radial-gradient(circle, rgba(30, 136, 255, 0.25), transparent 60%);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }

        .cta-section .cta-desc {
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 1.8rem;
            line-height: 1.8;
        }

        .cta-note {
            margin-top: 1rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .cta-points {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px 24px;
            margin-bottom: 1.6rem;
        }

        .cta-points span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        .cta-points i {
            color: var(--success);
            font-size: 0.8rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #080b16;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
        }

        .footer-brand h3 {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 0.8rem;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.75;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 0.95rem;
            color: var(--text-main);
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-links a {
            display: block;
            padding: 5px 0;
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: all 0.2s;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 0.5rem;
        }

        .footer-contact i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 1.4rem 0;
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hot-tags {
                display: none;
            }

            .search-box input {
                width: 140px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 0.8fr 1fr;
            }

            .footer-brand {
                grid-column: span 3;
            }
        }

        @media (max-width: 768px) {
            .header-actions .search-box {
                display: none;
            }

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

            .nav-inner {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 10px 0 16px;
            }

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

            .nav-links {
                flex-direction: column;
                gap: 4px;
                width: 100%;
            }

            .nav-links a {
                height: 44px;
                justify-content: center;
                border-bottom: none;
                border-radius: 8px;
                background: rgba(255, 255, 255, 0.04);
                margin-bottom: 4px;
            }

            .nav-links a.active {
                background: rgba(30, 136, 255, 0.12);
                color: #6bb4ff;
            }

            .nav-links a:hover {
                background: rgba(255, 255, 255, 0.08);
                border-bottom: none;
            }

            .mobile-search {
                display: flex;
                justify-content: center;
                margin-bottom: 10px;
            }

            .mobile-search form {
                width: 100%;
                max-width: 340px;
            }

            .mobile-search input {
                flex: 1;
            }

            .mobile-search .hot-tags {
                display: flex;
            }

            .nav-inner .hot-tags {
                display: flex;
                flex-wrap: wrap;
                justify-content: center;
                gap: 10px 16px;
                padding: 8px 0;
                border-top: 1px solid rgba(255, 255, 255, 0.06);
                margin-top: 8px;
            }

            .article-hero {
                padding: 3rem 0 2.5rem;
            }

            .article-card {
                padding: 1.4rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .related-thumb {
                height: 200px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

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

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

            .footer-bottom p {
                line-height: 1.6;
            }
        }

        @media (max-width: 520px) {
            .header-top-inner {
                gap: 8px;
            }

            .brand-logo {
                font-size: 1.1rem;
            }

            .btn-sm {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

            .article-hero h1 {
                font-size: 1.5rem;
            }

            .article-meta {
                gap: 8px;
                font-size: 0.78rem;
            }

            .article-card {
                padding: 1.15rem;
            }

            .related-thumb {
                height: 180px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }
        }