/* roulang page: index */
:root{
  --bg:#0B0F19;
  --bg-alt:#0F172A;
  --primary:#00E5FF;
  --secondary:#8B5CF6;
  --success:#22C55E;
  --warning:#F59E0B;
  --danger:#EF4444;
  --text:#F1F5F9;
  --text-dim:#94A3B8;
  --panel:rgba(255,255,255,0.06);
  --border:rgba(255,255,255,0.08);
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --shadow:0 8px 24px rgba(0,0,0,0.35);
  --glow:0 0 12px rgba(0,229,255,0.35);
  --spacer:96px;
  --max-width:1200px;
  --gutter:32px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Roboto,sans-serif;
  --transition:all .25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--primary);text-decoration:none;transition:var(--transition);}
a:hover{color:#66f0ff;}
img{max-width:100%;display:block;}
ul,ol{list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none;}
.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--gutter);position:relative;}
.section-pad{padding:96px 0;position:relative;}
.section-pad-sm{padding:64px 0;}
.text-gradient{
  background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:var(--transition);
  position:relative;
  white-space:nowrap;
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,#00E5FF,#8B5CF6);
  color:#fff;
  box-shadow:0 0 12px rgba(0,229,255,0.35);
}
.btn-primary:hover{
  filter:brightness(1.1);
  transform:translateY(-2px);
  box-shadow:0 0 20px rgba(0,229,255,0.5);
  color:#fff;
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:inset 0 2px 8px rgba(0,0,0,0.25);
}
.btn-ghost{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.2);
  color:var(--text);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{
  border-color:var(--primary);
  background:rgba(0,229,255,0.08);
  color:var(--primary);
  transform:translateY(-2px);
}
.btn:focus-visible,.btn-ghost:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
}
.section-title{
  font-size:28px;
  font-weight:700;
  line-height:1.3;
  margin-bottom:8px;
  position:relative;
}
.section-sub{
  font-size:16px;
  color:var(--text-dim);
  margin-bottom:32px;
  line-height:1.7;
}
.badge{
  display:inline-block;
  padding:4px 12px;
  border-radius:20px;
  font-size:12px;
  font-weight:600;
  background:rgba(0,229,255,0.12);
  color:var(--primary);
  border:1px solid rgba(0,229,255,0.2);
}
.card-glass{
  background:var(--panel);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--radius-md);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:20px;
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.card-glass::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,rgba(0,229,255,0.5),rgba(139,92,246,0.5));
  opacity:0.6;
}
.card-glass:hover{
  transform:translateY(-4px);
  border-color:rgba(0,229,255,0.25);
  box-shadow:0 8px 24px rgba(0,0,0,0.35),0 0 12px rgba(0,229,255,0.12);
}

/* Header Nav */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  background:rgba(15,23,42,0.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:var(--transition);
}
.nav-wrap{
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:0.5px;
}
.logo-icon{
  width:34px;
  height:34px;
  border-radius:8px;
  background:linear-gradient(135deg,#00E5FF,#8B5CF6);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  color:#fff;
  box-shadow:0 0 10px rgba(0,229,255,0.4);
  position:relative;
}
.logo-icon::after{
  content:'';
  position:absolute;
  top:-3px;
  right:-3px;
  width:8px;
  height:8px;
  background:var(--primary);
  border-radius:50%;
  box-shadow:0 0 6px var(--primary);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:0.6;transform:scale(0.85);}
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:8px;
  font-size:14px;
  color:rgba(255,255,255,0.85);
  position:relative;
  transition:var(--transition);
}
.nav-link::after{
  content:'';
  position:absolute;
  bottom:4px;
  left:14px;
  right:14px;
  height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;
  transform:scaleX(0);
  transition:transform .3s ease;
}
.nav-link:hover{
  color:var(--primary);
}
.nav-link:hover::after,.nav-link.active::after{
  transform:scaleX(1);
}
.nav-link.active{
  color:var(--primary);
}
.nav-right{
  display:flex;
  align-items:center;
  gap:10px;
}
.mega-trigger{
  padding:8px 16px;
  border-radius:8px;
  font-size:14px;
  color:var(--text);
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  cursor:pointer;
  transition:var(--transition);
  display:flex;
  align-items:center;
  gap:6px;
}
.mega-trigger:hover{
  border-color:var(--primary);
  color:var(--primary);
  box-shadow:0 0 8px rgba(0,229,255,0.2);
}
.mega-menu{
  position:absolute;
  top:calc(100% + 0px);
  right:0;
  width:620px;
  max-width:calc(100vw - 32px);
  background:rgba(15,23,42,0.95);
  backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--radius-md);
  padding:24px;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:all .25s ease;
  box-shadow:var(--shadow);
  z-index:999;
}
.mega-trigger:hover + .mega-menu,.mega-menu:hover{
  opacity:1;
  visibility:visible;
  transform:translateY(4px);
}
.mega-grid{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:16px;
}
.mega-col h4{
  font-size:14px;
  color:var(--text-dim);
  margin-bottom:12px;
  font-weight:600;
  letter-spacing:0.5px;
}
.mega-card{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  background:rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.04);
  transition:var(--transition);
  margin-bottom:8px;
}
.mega-card:hover{
  background:rgba(0,229,255,0.06);
  border-color:rgba(0,229,255,0.15);
  transform:translateX(4px);
}
.mega-card-icon{
  width:28px;
  height:28px;
  border-radius:6px;
  background:linear-gradient(135deg,rgba(0,229,255,0.15),rgba(139,92,246,0.15));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  color:var(--primary);
  flex-shrink:0;
}
.mega-card-text{
  flex:1;
}
.mega-card-title{
  font-size:13px;
  color:var(--text);
  font-weight:500;
}
.mega-card-desc{
  font-size:11px;
  color:var(--text-dim);
  line-height:1.4;
}
.mega-card-arrow{
  font-size:11px;
  color:var(--text-dim);
}
.hamburger{
  display:none;
  width:40px;
  height:40px;
  border-radius:8px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  font-size:18px;
  color:var(--text);
}

/* Hero */
.hero{
  min-height:90vh;
  min-height:640px;
  display:flex;
  align-items:center;
  position:relative;
  padding:120px 0 60px;
  background:url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,15,25,0.55) 0%,rgba(11,15,25,0.7) 50%,var(--bg) 100%);
  z-index:1;
}
.hero::after{
  content:'';
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
  background-size:30px 30px;
  z-index:1;
}
.hero-glow{
  position:absolute;
  width:500px;
  height:500px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,255,0.08),transparent 70%);
  top:20%;
  left:40%;
  z-index:1;
  pointer-events:none;
}
.hero-glow-2{
  position:absolute;
  width:400px;
  height:400px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,0.06),transparent 70%);
  bottom:10%;
  right:5%;
  z-index:1;
  pointer-events:none;
}
.hero-inner{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:40px;
  align-items:center;
  position:relative;
  z-index:2;
}
.hero-content{
  max-width:560px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:30px;
  background:rgba(0,229,255,0.08);
  border:1px solid rgba(0,229,255,0.25);
  font-size:13px;
  color:var(--primary);
  font-weight:500;
  margin-bottom:20px;
}
.hero-title{
  font-size:44px;
  font-weight:800;
  line-height:1.25;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:-0.5px;
}
.hero-sub{
  font-size:17px;
  color:rgba(255,255,255,0.7);
  line-height:1.7;
  margin-bottom:28px;
  max-width:480px;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.hero-metrics{
  display:flex;
  gap:28px;
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,0.08);
}
.metric{
  text-align:center;
}
.metric-num{
  font-size:32px;
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
}
.metric-num span{
  font-size:18px;
  color:var(--primary);
}
.metric-label{
  font-size:12px;
  color:var(--text-dim);
  margin-top:4px;
}

/* Phone Mockup */
.phone-wrap{
  display:flex;
  justify-content:center;
  position:relative;
}
.phone-mockup{
  width:290px;
  height:590px;
  border-radius:42px;
  border:1px solid rgba(255,255,255,0.2);
  background:var(--bg-alt);
  overflow:hidden;
  position:relative;
  box-shadow:0 0 40px rgba(0,229,255,0.15),0 20px 60px rgba(0,0,0,0.5);
}
.phone-mockup::before{
  content:'';
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:100px;
  height:26px;
  background:rgba(15,23,42,0.9);
  border-radius:0 0 16px 16px;
  z-index:10;
  border:1px solid rgba(255,255,255,0.08);
  border-top:none;
}
.phone-screen{
  width:100%;
  height:100%;
  position:relative;
  background:url('/assets/images/coverpic/cover-1.png') center center/cover no-repeat;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:16px;
}
.phone-screen::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(0,0,0,0.75) 100%);
  z-index:1;
}
.phone-source{
  position:absolute;
  top:44px;
  left:14px;
  z-index:10;
  padding:4px 12px;
  background:rgba(0,0,0,0.5);
  border-radius:20px;
  font-size:11px;
  color:#fff;
  backdrop-filter:blur(4px);
}
.phone-follow{
  position:absolute;
  top:44px;
  right:14px;
  z-index:10;
  padding:5px 14px;
  background:linear-gradient(135deg,#00E5FF,#8B5CF6);
  border-radius:20px;
  font-size:11px;
  color:#fff;
  font-weight:600;
  box-shadow:0 0 8px rgba(0,229,255,0.4);
}
.phone-content{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.phone-user{
  display:flex;
  align-items:center;
  gap:10px;
}
.phone-avatar{
  width:34px;
  height:34px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  color:#fff;
}
.phone-user-info{
  display:flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:#fff;
}
.phone-desc{
  font-size:13px;
  color:rgba(255,255,255,0.9);
  line-height:1.5;
}
.phone-actions{
  position:absolute;
  right:12px;
  bottom:120px;
  z-index:3;
  display:flex;
  flex-direction:column;
  gap:14px;
  align-items:center;
}
.phone-action-btn{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  color:#fff;
  font-size:11px;
}
.phone-action-btn i{
  width:36px;
  height:36px;
  border-radius:50%;
  background:rgba(0,0,0,0.4);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  backdrop-filter:blur(4px);
}
.scroll-indicator{
  position:absolute;
  bottom:24px;
  left:50%;
  transform:translateX(-50%);
  z-index:3;
  width:28px;
  height:42px;
  border:2px solid rgba(255,255,255,0.4);
  border-radius:20px;
  display:flex;
  justify-content:center;
  padding-top:6px;
  transition:var(--transition);
}
.scroll-indicator:hover{
  border-color:var(--primary);
}
.scroll-indicator::before{
  content:'';
  width:4px;
  height:8px;
  background:var(--primary);
  border-radius:4px;
  animation:scrollAnim 1.5s infinite;
}
@keyframes scrollAnim{
  0%{transform:translateY(0);opacity:1;}
  100%{transform:translateY(16px);opacity:0;}
}

/* Trust Bar */
.trust-bar{
  background:rgba(255,255,255,0.02);
  border-bottom:1px solid var(--border);
  padding:20px 0;
}
.trust-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
}
.trust-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-dim);
  padding:6px 4px;
}
.trust-item i{
  color:var(--primary);
  font-size:16px;
}

/* Section Header */
.section-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  margin-bottom:36px;
  gap:24px;
  flex-wrap:wrap;
}
.section-header .more-link{
  font-size:14px;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:var(--transition);
  white-space:nowrap;
}
.section-header .more-link:hover{
  gap:10px;
}

/* Viral Cards */
.viral-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.viral-card{
  aspect-ratio:3/4;
  border-radius:var(--radius-md);
  background:var(--bg-alt);
  position:relative;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.08);
  transition:var(--transition);
  cursor:pointer;
}
.viral-card:nth-child(2){
  transform:translateY(12px);
}
.viral-card:nth-child(4){
  transform:translateY(8px);
}
.viral-card:hover{
  transform:translateY(-4px) scale(1.02);
  border-color:rgba(0,229,255,0.3);
  box-shadow:0 0 20px rgba(0,229,255,0.15);
}
.viral-card:nth-child(2):hover{
  transform:translateY(0px) scale(1.02);
}
.viral-card:nth-child(4):hover{
  transform:translateY(2px) scale(1.02);
}
.viral-card img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:var(--transition);
}
.viral-card:hover img{
  transform:scale(1.05);
}
.viral-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,0.85) 100%);
  z-index:1;
}
.viral-badge{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  padding:4px 10px;
  border-radius:20px;
  font-size:11px;
  font-weight:600;
  background:rgba(0,229,255,0.85);
  color:#fff;
  backdrop-filter:blur(4px);
}
.viral-top{
  position:absolute;
  top:12px;
  right:12px;
  z-index:2;
  display:flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:20px;
  background:rgba(0,0,0,0.5);
  font-size:11px;
  color:#fff;
  backdrop-filter:blur(4px);
}
.viral-play{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  z-index:2;
  width:44px;
  height:44px;
  border-radius:50%;
  background:rgba(0,0,0,0.55);
  backdrop-filter:blur(6px);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:15px;
  border:1px solid rgba(255,255,255,0.25);
  transition:var(--transition);
  opacity:0;
}
.viral-card:hover .viral-play{
  opacity:1;
  transform:translate(-50%,-50%) scale(1.05);
}
.viral-info{
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  padding:16px;
  z-index:2;
}
.viral-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  line-height:1.5;
}

/* Recommend list */
.recommend-scroll{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:12px;
  -webkit-overflow-scrolling:touch;
}
.recommend-scroll::-webkit-scrollbar{
  height:6px;
}
.recommend-scroll::-webkit-scrollbar-track{
  background:rgba(255,255,255,0.04);
  border-radius:10px;
}
.recommend-scroll::-webkit-scrollbar-thumb{
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:10px;
}
.recommend-card{
  flex:0 0 240px;
  scroll-snap-align:start;
  border-radius:var(--radius-md);
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.08);
  padding:10px;
  transition:var(--transition);
  position:relative;
}
.recommend-card:hover{
  background:rgba(255,255,255,0.06);
  border-color:rgba(0,229,255,0.2);
  transform:translateY(-3px);
}
.recommend-cover{
  height:130px;
  border-radius:10px;
  overflow:hidden;
  margin-bottom:12px;
  position:relative;
}
.recommend-cover img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.recommend-cover .tag{
  position:absolute;
  top:8px;
  left:8px;
  padding:3px 8px;
  border-radius:12px;
  background:rgba(0,0,0,0.6);
  font-size:10px;
  color:var(--primary);
  backdrop-filter:blur(4px);
}
.recommend-title{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  margin-bottom:6px;
}
.recommend-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:11px;
  color:var(--text-dim);
}
.recommend-rating{
  display:flex;
  align-items:center;
  gap:3px;
  color:var(--warning);
  font-size:12px;
}
.recommend-btn{
  display:block;
  width:100%;
  padding:8px;
  text-align:center;
  border-radius:8px;
  font-size:13px;
  font-weight:600;
  background:linear-gradient(135deg,rgba(0,229,255,0.15),rgba(139,92,246,0.15));
  color:var(--primary);
  margin-top:10px;
  transition:var(--transition);
  border:1px solid rgba(0,229,255,0.2);
}
.recommend-btn:hover{
  background:linear-gradient(135deg,rgba(0,229,255,0.3),rgba(139,92,246,0.3));
  color:#fff;
}

/* Reviews */
.reviews-section{
  background:var(--bg-alt);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.reviews-grid{
  display:grid;
  grid-template-columns:0.8fr 1.6fr;
  gap:40px;
  align-items:center;
}
.review-summary{
  text-align:center;
  padding:28px;
}
.review-score{
  font-size:56px;
  font-weight:800;
  line-height:1;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.review-stars{
  display:flex;
  justify-content:center;
  gap:4px;
  margin:12px 0;
  color:var(--warning);
  font-size:18px;
}
.review-count{
  font-size:13px;
  color:var(--text-dim);
}
.review-scroll{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:12px;
}
.review-scroll::-webkit-scrollbar{
  height:6px;
}
.review-scroll::-webkit-scrollbar-track{
  background:rgba(255,255,255,0.04);
  border-radius:10px;
}
.review-scroll::-webkit-scrollbar-thumb{
  background:rgba(0,229,255,0.3);
  border-radius:10px;
}
.review-card{
  flex:0 0 260px;
  scroll-snap-align:start;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:var(--radius-md);
  padding:20px;
  backdrop-filter:blur(12px);
  transition:var(--transition);
}
.review-card:hover{
  border-color:rgba(0,229,255,0.2);
  transform:translateY(-2px);
}
.review-user{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.review-avatar{
  width:36px;
  height:36px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  color:#fff;
  flex-shrink:0;
}
.review-name{
  font-size:13px;
  font-weight:600;
  color:var(--text);
}
.review-stars-sm{
  color:var(--warning);
  font-size:12px;
  margin-left:auto;
}
.review-text{
  font-size:13px;
  color:rgba(255,255,255,0.75);
  line-height:1.6;
}
.review-tags{
  display:flex;
  gap:6px;
  margin-top:10px;
  flex-wrap:wrap;
}
.review-tag{
  padding:2px 8px;
  border-radius:10px;
  font-size:10px;
  background:rgba(0,229,255,0.08);
  color:var(--primary);
  border:1px solid rgba(0,229,255,0.12);
}

/* News Section */
.news-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.news-card{
  display:flex;
  gap:16px;
  padding:18px;
  border-radius:var(--radius-md);
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.06);
  transition:var(--transition);
  align-items:flex-start;
}
.news-card:hover{
  background:rgba(255,255,255,0.06);
  border-color:rgba(0,229,255,0.2);
  transform:translateX(4px);
}
.news-thumb{
  width:120px;
  height:84px;
  border-radius:10px;
  overflow:hidden;
  flex-shrink:0;
}
.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.news-body{
  flex:1;
  display:flex;
  flex-direction:column;
}
.news-cat{
  font-size:11px;
  color:var(--primary);
  font-weight:600;
  margin-bottom:4px;
}
.news-title{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  margin-bottom:4px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-excerpt{
  font-size:13px;
  color:var(--text-dim);
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:auto;
  padding-top:8px;
  font-size:12px;
  color:var(--text-dim);
}
.news-meta i{
  font-size:12px;
  color:rgba(255,255,255,0.3);
}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:48px 20px;
  color:var(--text-dim);
}
.empty-state i{
  font-size:40px;
  color:rgba(255,255,255,0.2);
  display:block;
  margin-bottom:12px;
}

/* CTA Banner */
.cta-section{
  position:relative;
}
.cta-banner{
  background:linear-gradient(135deg,rgba(0,229,255,0.06),rgba(139,92,246,0.06)),var(--bg-alt);
  border-radius:var(--radius-lg);
  padding:56px 48px;
  text-align:center;
  position:relative;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.08);
}
.cta-banner::before{
  content:'';
  position:absolute;
  top:-50%;
  left:50%;
  transform:translateX(-50%);
  width:400px;
  height:400px;
  background:radial-gradient(circle,rgba(0,229,255,0.12),transparent 70%);
  pointer-events:none;
}
.cta-banner::after{
  content:'';
  position:absolute;
  bottom:-50%;
  right:20%;
  width:300px;
  height:300px;
  background:radial-gradient(circle,rgba(139,92,246,0.1),transparent 70%);
  pointer-events:none;
}
.cta-title{
  font-size:32px;
  font-weight:800;
  color:#fff;
  margin-bottom:10px;
  position:relative;
  z-index:1;
}
.cta-sub{
  font-size:16px;
  color:var(--text-dim);
  margin-bottom:28px;
  position:relative;
  z-index:1;
}
.cta-banner .btn{
  position:relative;
  z-index:2;
}
.cta-float-icon{
  position:absolute;
  font-size:22px;
  color:rgba(0,229,255,0.3);
  z-index:1;
}
.cta-float-icon:nth-child(1){
  top:20px;
  left:30px;
  transform:rotate(-15deg);
}
.cta-float-icon:nth-child(2){
  bottom:20px;
  right:30px;
  transform:rotate(10deg);
  color:rgba(139,92,246,0.3);
}

/* Form Section */
.contact-form-wrap{
  max-width:860px;
  margin:0 auto;
}
.form-inner{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  justify-content:center;
}
.form-input{
  flex:1;
  min-width:180px;
  height:48px;
  padding:0 16px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:12px;
  font-size:14px;
  color:var(--text);
  transition:var(--transition);
}
.form-input::placeholder{
  color:rgba(255,255,255,0.4);
}
.form-input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(0,229,255,0.15);
  background:rgba(255,255,255,0.08);
}
.form-input.error{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(239,68,68,0.15);
}
.form-input.success{
  border-color:var(--success);
  box-shadow:0 0 0 3px rgba(34,197,94,0.15);
}
.form-tip{
  text-align:center;
  font-size:12px;
  color:var(--text-dim);
  margin-top:14px;
}
.form-tip i{
  color:var(--primary);
  margin-right:4px;
}

/* FAQ */
.faq-wrap{
  display:grid;
  grid-template-columns:0.7fr 1.3fr;
  gap:48px;
  align-items:start;
}
.faq-left{
  position:sticky;
  top:100px;
}
.faq-left .section-title{
  font-size:32px;
}
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  background:rgba(255,255,255,0.04);
  border-radius:12px;
  padding:0;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.06);
  transition:var(--transition);
}
.faq-item.active{
  border-color:rgba(0,229,255,0.2);
  background:rgba(255,255,255,0.05);
}
.faq-item-head{
  padding:18px 20px;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  transition:var(--transition);
}
.faq-item-head:hover{
  color:var(--primary);
}
.faq-item-head i{
  font-size:14px;
  color:var(--text-dim);
  transition:var(--transition);
}
.faq-item.active .faq-item-head i{
  transform:rotate(180deg);
  color:var(--primary);
}
.faq-item-body{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
  padding:0 20px;
  font-size:14px;
  color:var(--text-dim);
  line-height:1.7;
}
.faq-item.active .faq-item-body{
  max-height:300px;
  padding:0 20px 18px;
}
.faq-item .faq-item-body::before{
  content:'';
  display:block;
  height:1px;
  background:rgba(255,255,255,0.06);
  margin-bottom:12px;
}

/* Footer */
.site-footer{
  background:#0B0F19;
  border-top:2px solid;
  border-image:linear-gradient(90deg,#00E5FF,rgba(139,92,246,0.5)) 1;
  padding-top:64px;
  position:relative;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 0.8fr 0.8fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  font-size:13px;
  color:var(--text-dim);
  line-height:1.7;
  margin-top:12px;
  max-width:260px;
}
.footer-col h4{
  font-size:15px;
  color:var(--text);
  font-weight:600;
  margin-bottom:16px;
  position:relative;
  padding-bottom:8px;
}
.footer-col h4::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:24px;
  height:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.footer-col ul li{
  margin-bottom:8px;
}
.footer-col ul li a{
  font-size:13px;
  color:var(--text-dim);
  transition:var(--transition);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.footer-col ul li a:hover{
  color:var(--primary);
  transform:translateX(3px);
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-dim);
  margin-bottom:10px;
}
.footer-contact i{
  color:var(--primary);
  width:16px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:12px;
  color:rgba(255,255,255,0.4);
}

/* Responsive */
@media(max-width:1024px){
  :root{--spacer:80px;--gutter:24px;}
  .viral-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .reviews-grid{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;}
  .faq-left{position:static;}
  .hero-title{font-size:36px;}
  .hero-inner{grid-template-columns:1fr;text-align:center;}
  .hero-content{max-width:100%;margin:0 auto;}
  .hero-sub{margin:0 auto 28px;}
  .hero-actions{justify-content:center;}
  .hero-metrics{justify-content:center;}
  .phone-wrap{margin-top:24px;}
  .mega-trigger{display:none;}
  .mega-menu{display:none;}
}
@media(max-width:768px){
  :root{--spacer:64px;--gutter:16px;}
  .nav-menu{
    display:none;
    position:fixed;
    top:64px;
    left:0;
    right:0;
    flex-direction:column;
    background:rgba(15,23,42,0.96);
    padding:16px;
    gap:4px;
    border-bottom:1px solid rgba(255,255,255,0.08);
  }
  .nav-menu.open{display:flex;}
  .nav-link{width:100%;padding:12px 16px;border-radius:8px;}
  .nav-link::after{display:none;}
  .nav-link:hover{background:rgba(0,229,255,0.06);}
  .hamburger{display:flex;}
  .cta-banner{padding:40px 20px;}
  .cta-title{font-size:24px;}
  .form-inner{flex-direction:column;}
  .form-input{width:100%;flex:none;}
  .viral-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card{flex-direction:column;gap:10px;}
  .news-thumb{width:100%;height:120px;}
  .section-title{font-size:24px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:15px;}
  .metric-num{font-size:24px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media(max-width:520px){
  .viral-grid{grid-template-columns:1fr;}
  .viral-card{max-width:280px;margin:0 auto;width:100%;}
  .viral-card:nth-child(2),.viral-card:nth-child(4){transform:none;}
  .footer-grid{grid-template-columns:1fr;}
  .trust-inner{justify-content:center;}
  .phone-mockup{width:260px;height:540px;}
}

/* roulang page: category1 */
:root{
  --bg-primary:#0B0F19;
  --bg-secondary:#0F172A;
  --bg-panel:rgba(255,255,255,0.06);
  --bg-panel-hover:rgba(255,255,255,0.09);
  --primary:#00E5FF;
  --secondary:#8B5CF6;
  --success:#22C55E;
  --warning:#F59E0B;
  --danger:#EF4444;
  --text-primary:#F1F5F9;
  --text-secondary:#94A3B8;
  --text-muted:#64748B;
  --border-color:rgba(255,255,255,0.08);
  --border-light:rgba(255,255,255,0.14);
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-xl:40px;
  --shadow-card:0 8px 24px rgba(0,0,0,0.35);
  --shadow-glow:0 0 12px rgba(0,229,255,0.35);
  --shadow-glow-lg:0 8px 24px rgba(0,229,255,0.12);
  --font-stack:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Roboto,sans-serif;
  --nav-height:64px;
  --container-width:1200px;
  --space-section:96px;
  --space-section-mobile:64px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font-family:inherit;cursor:pointer}
input,textarea{font-family:inherit}
.container{
  width:100%;
  max-width:var(--container-width);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
section{scroll-margin-top:calc(var(--nav-height) + 24px)}

/* ========== Header / Nav ========== */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:var(--nav-height);
  background:rgba(15,23,42,0.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  z-index:1000;
  transition:background .3s ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:100%;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  white-space:nowrap;
}
.logo-icon{
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:16px;
  box-shadow:var(--shadow-glow);
  flex-shrink:0;
}
.logo span:last-child{
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--text-primary);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
  margin-right:24px;
}
.nav-link{
  font-size:14px;
  color:rgba(255,255,255,0.85);
  font-weight:500;
  padding:6px 2px;
  position:relative;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:'';
  position:absolute;
  left:0;
  bottom:-2px;
  width:0;
  height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;
  transition:width .3s ease,box-shadow .3s ease;
}
.nav-link:hover{
  color:var(--primary);
}
.nav-link:hover::after{
  width:100%;
  box-shadow:0 0 8px rgba(0,229,255,0.6);
}
.nav-link.active{
  color:var(--primary);
}
.nav-link.active::after{
  width:100%;
  box-shadow:0 0 8px rgba(0,229,255,0.6);
}
.mega-toggle{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 16px;
  border-radius:var(--radius-sm);
  background:var(--bg-panel);
  border:1px solid var(--border-light);
  color:var(--text-primary);
  font-size:13px;
  font-weight:500;
  transition:all .25s ease;
  white-space:nowrap;
}
.mega-toggle:hover{
  border-color:var(--primary);
  color:var(--primary);
  box-shadow:0 0 12px rgba(0,229,255,0.15);
}
.mega-panel{
  position:absolute;
  top:calc(100% + 8px);
  right:32px;
  width:600px;
  background:rgba(15,23,42,0.96);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border-light);
  border-radius:var(--radius-md);
  padding:24px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  opacity:0;
  visibility:hidden;
  transform:translateY(4px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  box-shadow:0 20px 40px rgba(0,0,0,0.5);
  z-index:2000;
}
.mega-panel.open{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.mega-group h4{
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  margin-bottom:14px;
  letter-spacing:.05em;
}
.mega-card{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.mega-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 10px;
  border-radius:var(--radius-sm);
  background:rgba(255,255,255,0.03);
  border:1px solid transparent;
  transition:all .2s ease;
  font-size:13px;
}
.mega-item i{
  color:var(--primary);
  font-size:13px;
  width:18px;
  flex-shrink:0;
}
.mega-item span{
  flex:1;
  color:var(--text-secondary);
}
.mega-item .fa-arrow-right{
  opacity:0;
  transform:translateX(-4px);
  transition:all .2s ease;
  color:var(--secondary);
}
.mega-item:hover{
  background:rgba(0,229,255,0.08);
  border-color:rgba(0,229,255,0.2);
}
.mega-item:hover span{
  color:var(--text-primary);
}
.mega-item:hover .fa-arrow-right{
  opacity:1;
  transform:translateX(0);
}
.mobile-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:var(--radius-sm);
  background:var(--bg-panel);
  border:1px solid var(--border-light);
  color:var(--text-primary);
  font-size:16px;
  align-items:center;
  justify-content:center;
  transition:all .25s ease;
}
.mobile-toggle:hover{
  border-color:var(--primary);
  color:var(--primary);
}

/* ========== Page Hero ========== */
.page-hero{
  position:relative;
  min-height:360px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  padding:120px 0 64px;
  isolation:isolate;
}
.page-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,15,25,0.82) 0%,rgba(11,15,25,0.65) 50%,rgba(11,15,25,0.92) 100%);
  z-index:-2;
}
.page-hero::after{
  content:'';
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
  background-size:40px 40px;
  z-index:-1;
}
.hero-glow{
  position:absolute;
  width:420px;
  height:420px;
  background:radial-gradient(circle,rgba(0,229,255,0.15) 0%,transparent 70%);
  top:-120px;
  left:50%;
  transform:translateX(-50%);
  z-index:-1;
  pointer-events:none;
}
.page-hero .hero-content{
  position:relative;
  z-index:2;
}
.page-hero h1{
  font-size:42px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:.01em;
  color:var(--text-primary);
  text-shadow:0 2px 20px rgba(0,0,0,0.4);
}
.page-hero h1 .gradient-text{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.page-hero .hero-subtitle{
  font-size:16px;
  color:rgba(241,245,249,0.7);
  max-width:600px;
  margin:16px auto 0;
  line-height:1.8;
}
.hero-meta{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:24px;
  margin-top:24px;
  flex-wrap:wrap;
}
.hero-meta .meta-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-secondary);
  background:rgba(255,255,255,0.04);
  padding:6px 14px;
  border-radius:30px;
  border:1px solid rgba(255,255,255,0.08);
}
.hero-meta .meta-item i{
  color:var(--primary);
}

/* ========== Feature List Section ========== */
.feature-list-section{
  padding:var(--space-section) 0 0;
}
.section-heading{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  margin-bottom:40px;
  gap:24px;
}
.section-heading h2{
  font-size:32px;
  font-weight:800;
  line-height:1.3;
  color:var(--text-primary);
  position:relative;
}
.section-heading h2::before{
  content:'';
  display:inline-block;
  width:6px;
  height:28px;
  background:linear-gradient(180deg,var(--primary),var(--secondary));
  border-radius:4px;
  margin-right:12px;
  vertical-align:middle;
}
.section-heading .section-sub{
  font-size:14px;
  color:var(--text-secondary);
  max-width:400px;
  text-align:right;
  line-height:1.7;
}
.feature-list{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.feature-list-item{
  display:flex;
  align-items:center;
  gap:32px;
  background:var(--bg-panel);
  border:1px solid var(--border-color);
  border-radius:var(--radius-md);
  padding:24px;
  transition:all .25s ease;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  position:relative;
  overflow:hidden;
}
.feature-list-item::before{
  content:'';
  position:absolute;
  left:0;
  top:0;
  width:3px;
  height:100%;
  background:linear-gradient(180deg,var(--primary),var(--secondary));
  opacity:0;
  transition:opacity .25s ease;
}
.feature-list-item:hover{
  transform:translateY(4px);
  border-color:rgba(0,229,255,0.3);
  box-shadow:var(--shadow-glow-lg);
  background:rgba(255,255,255,0.08);
}
.feature-list-item:hover::before{
  opacity:1;
}
.feature-thumb{
  width:240px;
  height:160px;
  object-fit:cover;
  border-radius:var(--radius-sm);
  flex-shrink:0;
  box-shadow:0 4px 16px rgba(0,0,0,0.3);
}
.feature-body{
  flex:1;
  min-width:0;
}
.feature-body h3{
  font-size:22px;
  font-weight:700;
  margin-bottom:10px;
  color:var(--text-primary);
  line-height:1.4;
}
.feature-body p{
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:16px;
}
.feature-meta{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.feature-meta .tag{
  font-size:12px;
  padding:4px 10px;
  border-radius:20px;
  background:rgba(0,229,255,0.1);
  color:var(--primary);
  border:1px solid rgba(0,229,255,0.2);
}
.feature-meta .read-more{
  font-size:14px;
  font-weight:600;
  color:var(--text-primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:all .2s ease;
}
.feature-meta .read-more i{
  transition:transform .2s ease;
  color:var(--primary);
}
.feature-meta .read-more:hover{
  color:var(--primary);
}
.feature-meta .read-more:hover i{
  transform:translateX(4px);
}

/* ========== Feature Points ========== */
.feature-points-section{
  padding:var(--space-section) 0;
}
.points-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.point-card{
  background:var(--bg-panel);
  border:1px solid var(--border-color);
  border-radius:var(--radius-md);
  padding:28px 24px;
  text-align:center;
  transition:all .3s ease;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.point-card:hover{
  transform:translateY(-4px);
  border-color:rgba(0,229,255,0.3);
  box-shadow:var(--shadow-glow-lg);
}
.point-icon{
  width:56px;
  height:56px;
  border-radius:16px;
  background:linear-gradient(135deg,rgba(0,229,255,0.15),rgba(139,92,246,0.15));
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto 18px;
  color:var(--primary);
  font-size:24px;
  position:relative;
}
.point-icon i{
  filter:drop-shadow(0 0 8px rgba(0,229,255,0.4));
}
.point-card h3{
  font-size:17px;
  font-weight:700;
  margin-bottom:8px;
  color:var(--text-primary);
}
.point-card p{
  font-size:13px;
  color:var(--text-secondary);
  line-height:1.7;
}

/* ========== FAQ Section ========== */
.faq-section{
  padding:var(--space-section) 0;
  background:rgba(15,23,42,0.4);
  position:relative;
}
.faq-section::before{
  content:'';
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:80%;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,255,0.3),rgba(139,92,246,0.3),transparent);
}
.faq-layout{
  display:grid;
  grid-template-columns:360px 1fr;
  gap:64px;
  align-items:start;
}
.faq-intro h2{
  font-size:32px;
  font-weight:800;
  margin-bottom:16px;
  line-height:1.3;
  color:var(--text-primary);
}
.faq-intro p{
  font-size:15px;
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:24px;
}
.faq-intro .faq-contact{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-primary);
  padding:10px 20px;
  border-radius:30px;
  background:var(--bg-panel);
  border:1px solid var(--border-light);
  transition:all .25s ease;
}
.faq-intro .faq-contact:hover{
  border-color:var(--primary);
  color:var(--primary);
}
.faq-accordion{
  display:flex;
  flex-direction:column;
  gap:16px;
}
.faq-item{
  background:rgba(255,255,255,0.04);
  border:1px solid var(--border-color);
  border-radius:12px;
  overflow:hidden;
  transition:all .25s ease;
}
.faq-item.active{
  border-top:2px solid var(--primary);
  background:rgba(255,255,255,0.06);
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 20px;
  cursor:pointer;
  font-size:15px;
  font-weight:600;
  color:var(--text-primary);
  transition:background .2s ease;
  user-select:none;
}
.faq-question:hover{
  background:rgba(255,255,255,0.07);
}
.faq-question i{
  font-size:14px;
  color:var(--text-secondary);
  transition:transform .3s ease;
}
.faq-item.active .faq-question i{
  transform:rotate(180deg);
  color:var(--primary);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
}
.faq-answer p{
  padding:0 20px 18px;
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.8;
}

/* ========== CTA Section ========== */
.cta-section{
  padding-bottom:var(--space-section);
}
.cta-banner{
  position:relative;
  border-radius:var(--radius-lg);
  padding:64px 48px;
  text-align:center;
  background:linear-gradient(135deg,rgba(0,229,255,0.06),rgba(139,92,246,0.08));
  border:1px solid rgba(139,92,246,0.2);
  overflow:hidden;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  isolation:isolate;
}
.cta-banner::before{
  content:'';
  position:absolute;
  width:300px;
  height:300px;
  background:radial-gradient(circle,rgba(0,229,255,0.25),transparent 70%);
  top:-80px;
  left:10%;
  z-index:-1;
}
.cta-banner::after{
  content:'';
  position:absolute;
  width:280px;
  height:280px;
  background:radial-gradient(circle,rgba(139,92,246,0.25),transparent 70%);
  bottom:-80px;
  right:10%;
  z-index:-1;
}
.cta-icon{
  position:absolute;
  width:56px;
  height:56px;
  border-radius:16px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:22px;
  opacity:0.15;
  z-index:0;
}
.cta-icon.icon-1{top:30px;left:6%;transform:rotate(12deg)}
.cta-icon.icon-2{bottom:30px;right:6%;transform:rotate(-12deg)}
.cta-banner h2{
  font-size:32px;
  font-weight:800;
  color:var(--text-primary);
  margin-bottom:12px;
  line-height:1.3;
}
.cta-banner p{
  font-size:16px;
  color:var(--text-secondary);
  margin-bottom:32px;
  line-height:1.7;
}
.btn-group{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  border-radius:12px;
  padding:14px 28px;
  border:none;
  transition:all .25s ease;
  outline:none;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  filter:brightness(1.1);
  transform:translateY(-2px);
  box-shadow:0 0 20px rgba(0,229,255,0.5);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:inset 0 2px 8px rgba(0,0,0,0.3);
}
.btn-ghost{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.2);
  color:var(--text-primary);
}
.btn-ghost:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(0,229,255,0.08);
}
.btn:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
}

/* ========== Footer ========== */
.site-footer{
  background:#0B0F19;
  border-top:2px solid transparent;
  border-image:linear-gradient(90deg,var(--primary),rgba(139,92,246,0.6),transparent) 1;
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .logo{
  margin-bottom:16px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.8;
  margin-top:8px;
  max-width:320px;
}
.footer-col h4{
  font-size:16px;
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:20px;
  position:relative;
  padding-bottom:12px;
}
.footer-col h4::after{
  content:'';
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;
}
.footer-col ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-secondary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:all .2s ease;
}
.footer-col ul li a i{
  font-size:12px;
  color:var(--primary);
  opacity:0.6;
  transition:opacity .2s ease;
}
.footer-col ul li a:hover{
  color:var(--primary);
}
.footer-col ul li a:hover i{
  opacity:1;
}
.footer-contact li{
  font-size:14px;
  color:var(--text-secondary);
  display:flex;
  align-items:center;
  gap:10px;
}
.footer-contact li i{
  width:16px;
  text-align:center;
  color:var(--primary);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:rgba(255,255,255,0.4);
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.15);border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:rgba(0,229,255,0.4)}

/* ========== Responsive ========== */
@media (max-width:1024px){
  .container{padding-left:24px;padding-right:24px}
  .points-grid{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .feature-list-item{flex-direction:column;align-items:flex-start}
  .feature-thumb{width:100%;height:220px}
  .mega-panel{right:24px}
}
@media (max-width:768px){
  :root{--space-section:64px}
  .container{padding-left:16px;padding-right:16px}
  .site-header{
    height:auto;
    min-height:var(--nav-height);
    flex-wrap:wrap;
    align-items:center;
  }
  .header-inner{
    flex-wrap:wrap;
    padding:0 16px;
  }
  .nav-menu{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    padding:12px 0 16px;
    background:rgba(15,23,42,0.96);
    border-top:1px solid var(--border-color);
  }
  .nav-menu.open{
    display:flex;
  }
  .nav-link{
    width:100%;
    padding:12px 8px;
    border-radius:var(--radius-sm);
    font-size:15px;
  }
  .nav-link::after{
    display:none;
  }
  .nav-link:hover,.nav-link.active{
    background:rgba(0,229,255,0.1);
    color:var(--primary);
  }
  .mega-toggle{
    display:none;
  }
  .mobile-toggle{
    display:flex;
  }
  .mega-panel{
    position:static;
    width:100%;
    grid-template-columns:1fr 1fr;
    border:none;
    border-top:1px solid var(--border-color);
    border-radius:0;
    padding:16px 0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    transform:none;
    display:none;
  }
  .mega-panel.open{
    display:grid;
  }
  .page-hero{
    min-height:320px;
    padding:100px 0 48px;
  }
  .page-hero h1{
    font-size:28px;
  }
  .hero-subtitle{
    font-size:14px;
    padding:0 16px;
  }
  .section-heading{
    flex-direction:column;
    align-items:flex-start;
  }
  .section-heading .section-sub{
    text-align:left;
  }
  .section-heading h2{
    font-size:26px;
  }
  .feature-body h3{
    font-size:19px;
  }
  .faq-intro h2{
    font-size:26px;
  }
  .cta-banner{
    padding:40px 24px;
  }
  .cta-banner h2{
    font-size:24px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:24px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:center;
    text-align:center;
  }
}
@media (max-width:520px){
  .points-grid{grid-template-columns:1fr}
  .mega-panel{grid-template-columns:1fr}
  .feature-thumb{height:180px}
  .btn{padding:12px 20px;font-size:13px}
  .page-hero h1{
    font-size:24px;
  }
  .hero-meta .meta-item{
    font-size:12px;
    padding:5px 10px;
  }
  .feature-list-item{
    padding:20px;
  }
}

/* roulang page: article */
:root {
  --bg: #0B0F19;
  --bg-2: #0F172A;
  --primary: #00E5FF;
  --secondary: #8B5CF6;
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --text: #F1F5F9;
  --text-2: #94A3B8;
  --text-3: #64748B;
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  --panel: rgba(255, 255, 255, 0.06);
  --panel-hover: rgba(255, 255, 255, 0.09);
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --glow: 0 0 12px rgba(0, 229, 255, 0.35);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Roboto, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-variant-numeric: tabular-nums;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
::selection { background: rgba(0, 229, 255, 0.3); }

/* ========== Header / Nav ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-container {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
  position: relative;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0,229,255,.25), rgba(139,92,246,.25));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  border: 1px solid rgba(0,229,255,.35);
  box-shadow: 0 0 14px rgba(0,229,255,.2);
  position: relative;
}
.logo-icon::after {
  content: '';
  position: absolute;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--primary);
  top: 4px; right: 4px;
  box-shadow: 0 0 6px var(--primary);
}
.logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
  white-space: nowrap;
  background: linear-gradient(90deg, #fff, rgba(255,255,255,.85));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 16px;
  flex: 1;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  font-size: 14px;
  color: rgba(255,255,255,.85);
  border-radius: 8px;
  position: relative;
  transition: all .2s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(0,229,255,.06);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0,229,255,.5);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.mega-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-light);
  font-size: 13px;
  color: var(--text);
  transition: all .2s ease;
}
.mega-trigger:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 12px rgba(0,229,255,.15);
}
.mega-trigger i { color: var(--primary); }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-light);
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

/* Mega Panel */
.mega-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 620px;
  background: rgba(15, 23, 42, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px;
  padding: 28px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .2s ease;
  box-shadow: 0 24px 48px rgba(0,0,0,.5);
  z-index: 100;
}
.mega-panel.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.mega-col h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.mega-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255,255,255,.04);
  border: 1px solid transparent;
  margin-bottom: 8px;
  transition: all .2s ease;
}
.mega-card:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(0,229,255,.3);
  transform: translateX(3px);
}
.mega-card .mc-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.mega-card .mc-desc {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 2px;
}
.mega-card .mc-arrow {
  color: var(--primary);
  font-size: 12px;
  opacity: 0;
  transition: opacity .2s;
}
.mega-card:hover .mc-arrow { opacity: 1; }

/* ========== Article Banner ========== */
.article-banner {
  padding: 160px 0 56px;
  background: linear-gradient(rgba(11,15,25,.88), rgba(11,15,25,.96)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 600px 280px at 20% 30%, rgba(0,229,255,.12), transparent),
              radial-gradient(ellipse 500px 260px at 85% 70%, rgba(139,92,246,.14), transparent);
  pointer-events: none;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 28px;
}
.breadcrumb a {
  color: var(--text-2);
  transition: color .2s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 12px; color: var(--text-3); }
.breadcrumb span { color: var(--text); }
.article-title {
  font-size: 36px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--text);
  max-width: 820px;
  letter-spacing: -.5px;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--text-2);
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta .meta-item i { color: var(--primary); font-size: 13px; }
.article-meta .meta-cat {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: 20px;
  background: rgba(0,229,255,.1);
  border: 1px solid rgba(0,229,255,.25);
  color: var(--primary);
  font-size: 13px;
}
.meta-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--text-3);
}

/* ========== Article Content ========== */
.article-wrap {
  padding: 48px 0 64px;
}
.article-layout {
  max-width: 800px;
  margin: 0 auto;
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #CBD5E1;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  border-left: 4px solid var(--primary);
  padding-left: 16px;
  margin: 44px 0 18px;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: #E2E8F0;
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.article-content p {
  margin-bottom: 20px;
}
.article-content strong { color: var(--text); font-weight: 600; }
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: #66F0FF; }
.article-content blockquote {
  border-left: 3px solid var(--secondary);
  background: rgba(139,92,246,.07);
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 28px 0;
  color: #C7D2FE;
  font-style: italic;
}
.article-content ul {
  padding-left: 22px;
  margin: 16px 0 22px;
}
.article-content ul li {
  position: relative;
  padding-left: 8px;
  margin-bottom: 10px;
}
.article-content ul li::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 12px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 6px rgba(0,229,255,.5);
}
.article-content ol {
  padding-left: 22px;
  margin: 16px 0 22px;
  counter-reset: item;
}
.article-content ol li {
  position: relative;
  padding-left: 8px;
  margin-bottom: 10px;
  counter-increment: item;
}
.article-content ol li::before {
  content: counter(item);
  position: absolute;
  left: -22px;
  top: 3px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(0,229,255,.12);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.article-content img {
  border-radius: 12px;
  margin: 24px 0;
  border: 1px solid var(--border);
}
.article-content code {
  background: rgba(0,229,255,.08);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--primary);
  border: 1px solid rgba(0,229,255,.15);
}
.article-content pre {
  background: #0A0E16;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 24px 0;
  line-height: 1.6;
}
.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: #E2E8F0;
}
/* 空状态 */
.article-not-found {
  text-align: center;
  padding: 80px 24px;
}
.article-not-found .anf-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--text-3);
}
.article-not-found h2 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 8px;
}
.article-not-found p {
  color: var(--text-2);
  margin-bottom: 24px;
}

/* ========== Tags & Share ========== */
.article-bottom {
  margin-top: 48px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.article-tags .tag-label {
  font-size: 14px;
  color: var(--text-2);
  margin-right: 4px;
}
.article-tags a {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 20px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border-light);
  font-size: 13px;
  color: var(--text-2);
  transition: all .2s;
}
.article-tags a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0,229,255,.08);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 8px;
}
.article-share .share-label {
  font-size: 14px;
  color: var(--text-2);
}
.share-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-2);
  transition: all .2s ease;
}
.share-btn:hover {
  background: rgba(0,229,255,.15);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ========== Related ========== */
.related-section {
  padding: 72px 0 56px;
  background: linear-gradient(180deg, transparent, rgba(0,229,255,.02));
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  position: relative;
  padding-left: 18px;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}
.section-sub {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 32px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,229,255,.3);
  box-shadow: 0 8px 24px rgba(0,0,0,.35), 0 0 20px rgba(0,229,255,.1);
}
.related-card .rc-cover {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.related-card .rc-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.related-card:hover .rc-cover img {
  transform: scale(1.05);
}
.related-card .rc-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,15,25,.55));
}
.related-card .rc-body {
  padding: 20px 20px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.related-card .rc-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  transition: color .2s;
}
.related-card:hover .rc-title { color: var(--primary); }
.related-card .rc-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
}
.related-card .rc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}
.related-card .rc-link i {
  transition: transform .2s;
}
.related-card:hover .rc-link i {
  transform: translateX(4px);
}

/* ========== Back Button ========== */
.back-section {
  padding: 16px 0 72px;
  text-align: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: all .2s ease;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 0 12px rgba(0,229,255,.35);
  border: none;
}
.btn-primary:hover {
  box-shadow: 0 0 24px rgba(0,229,255,.5);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: inset 0 2px 8px rgba(0,0,0,.2);
}
.btn-ghost {
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-light);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0,229,255,.08);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ========== Footer ========== */
.site-footer {
  background: #0B0F19;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), transparent 40%, transparent 60%, var(--secondary)) 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 56px 0 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}
.footer-col ul a:hover {
  color: var(--primary);
  transform: translateX(4px);
}
.footer-col ul a i { font-size: 12px; color: var(--text-3); }
.footer-col ul a:hover i { color: var(--primary); }
.footer-contact li {
  font-size: 14px;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-contact i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,.4);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .mega-panel { width: 560px; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    flex-direction: column;
    background: rgba(15,23,42,.98);
    backdrop-filter: blur(20px);
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    display: none;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .nav-menu.open { display: flex; }
  .nav-link {
    padding: 14px 16px;
    width: 100%;
    border-radius: 10px;
  }
  .nav-link.active::after { display: none; }
  .nav-link.active {
    background: rgba(0,229,255,.1);
  }
  .nav-actions .mega-trigger span { display: none; }
  .mega-trigger {
    width: 40px; height: 40px;
    padding: 0;
    justify-content: center;
  }
  .mega-panel {
    position: fixed;
    top: 64px;
    left: 16px; right: 16px;
    width: auto;
    transform: translateY(8px);
  }
  .mega-panel.show {
    transform: translateY(0);
  }
  .mega-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .article-title { font-size: 28px; }
  .article-banner { padding: 130px 0 40px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .article-meta { gap: 12px; }
}

@media (max-width: 520px) {
  .article-title { font-size: 23px; }
  .logo-text { font-size: 14px; }
  .article-meta { font-size: 13px; }
  .related-card .rc-cover { height: 200px; }
  .section-title { font-size: 24px; }
}

/* roulang page: category3 */
:root {
    --bg: #0B0F19;
    --bg-2: #0F172A;
    --primary: #00E5FF;
    --secondary: #8B5CF6;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --text: #F1F5F9;
    --text-dim: #94A3B8;
    --panel: rgba(255,255,255,0.06);
    --panel-hover: rgba(255,255,255,0.09);
    --border: rgba(255,255,255,0.08);
    --border-light: rgba(255,255,255,0.14);
    --radius: 16px;
    --radius-small: 8px;
    --radius-large: 24px;
    --shadow: 0 8px 24px rgba(0,0,0,0.35);
    --glow: 0 0 12px rgba(0,229,255,0.35);
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Roboto, sans-serif;
    --container: 1200px;
    --space: 96px;
    --space-mobile: 64px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

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

  button,
  input,
  textarea {
    font-family: inherit;
    font-size: 14px;
  }

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
  }

  .icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
    background: rgba(0, 229, 255, 0.12);
    color: var(--primary);
    border: 1px solid rgba(0, 229, 255, 0.25);
  }

  .badge-purple {
    background: rgba(139, 92, 246, 0.14);
    color: var(--secondary);
    border-color: rgba(139, 92, 246, 0.3);
  }

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

  .section-title-wrap {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 40px;
  }

  .section-title {
    font-size: 32px;
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.02em;
  }

  .section-subtitle {
    color: var(--text-dim);
    font-size: 16px;
    margin-top: 8px;
    max-width: 520px;
  }

  .section-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-dim);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: color 0.2s ease;
  }

  .section-more i {
    transition: transform 0.2s ease;
  }

  .section-more:hover {
    color: var(--primary);
  }

  .section-more:hover i {
    transform: translateX(4px);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    line-height: 1.2;
    white-space: nowrap;
  }

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

  .btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 0 18px rgba(0, 229, 255, 0.45);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    backdrop-filter: blur(10px);
  }

  .btn-ghost:hover {
    border-color: rgba(0, 229, 255, 0.6);
    background: rgba(0, 229, 255, 0.08);
    color: var(--primary);
    transform: translateY(-2px);
  }

  .btn:focus-visible {
    outline: 3px solid rgba(0, 229, 255, 0.5);
    outline-offset: 2px;
  }

  .btn-sm {
    padding: 8px 18px;
    font-size: 13px;
    border-radius: 10px;
  }

  .glass-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  }

  .glass-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, rgba(0, 229, 255, 0.5), rgba(139, 92, 246, 0.5));
    opacity: 0.6;
  }

  .glass-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-light);
    box-shadow: 0 8px 24px rgba(0, 229, 255, 0.12);
  }

  /* ─── 导航 ─── */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 64px;
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .header-inner {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    position: relative;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.01em;
    flex-shrink: 0;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 17px;
    box-shadow: var(--glow);
    position: relative;
  }

  .logo-icon::after {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: 12px;
    border: 1px solid rgba(0, 229, 255, 0.3);
    opacity: 0.6;
  }

  .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
  }

  .logo-text small {
    font-size: 11px;
    color: var(--text-dim);
    font-weight: 400;
    letter-spacing: 0.05em;
  }

  .nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    border-radius: 8px;
    transition: color 0.2s ease, background 0.2s ease;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
  }

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

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

  .nav-link.active {
    color: var(--primary);
    font-weight: 500;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }

  .mega-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .mega-trigger:hover,
  .mega-trigger:focus-visible {
    border-color: rgba(0, 229, 255, 0.5);
    color: var(--primary);
    outline: none;
  }

  .mega-trigger i {
    font-size: 12px;
    transition: transform 0.2s ease;
  }

  .mega-trigger:hover i {
    transform: rotate(180deg);
  }

  .hamburger {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
  }

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

  /* Mega 面板 */
  .mega-panel {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 620px;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    padding: 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px) scale(0.98);
    transition: all 0.2s ease;
    backdrop-filter: blur(24px);
    z-index: 50;
  }

  .mega-panel.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
  }

  .mega-panel::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 24px;
    right: 24px;
    height: 1px;
    background: linear-gradient(90deg, var(--primary), transparent);
  }

  .mega-col h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .mega-col h4 i {
    color: var(--primary);
    font-size: 12px;
  }

  .mega-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    margin-bottom: 8px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
  }

  .mega-link:hover {
    background: rgba(0, 229, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.25);
    transform: translateX(4px);
  }

  .mega-link strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
  }

  .mega-link span {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.4;
  }

  .mega-link i {
    color: var(--primary);
    font-size: 13px;
    opacity: 0.7;
  }

  .mega-wrap {
    position: relative;
  }

  .mega-wrap:hover .mega-panel,
  .mega-trigger:focus-visible .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
  }

  /* ─── 页内 Hero ─── */
  .page-hero {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 0 60px;
    background-image: linear-gradient(to bottom, rgba(11, 15, 25, 0.55), rgba(11, 15, 25, 0.9)), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }

  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
  }

  .page-hero::after {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.2), transparent 70%);
    pointer-events: none;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 760px;
  }

  .hero-content .badge {
    margin-bottom: 20px;
  }

  .page-hero h1 {
    font-size: 44px;
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
  }

  .hero-subtitle {
    font-size: 16px;
    color: var(--text-dim);
    max-width: 640px;
    margin: 0 auto 28px;
    line-height: 1.8;
  }

  .hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
  }

  /* ─── 安全信任卡片 ─── */
  .trust-section {
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02));
  }

  .trust-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr 1fr;
    gap: 20px;
    align-items: stretch;
  }

  .trust-card {
    padding: 28px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
    transition: all 0.25s ease;
  }

  .trust-card.center {
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(139, 92, 246, 0.08));
    border-color: rgba(0, 229, 255, 0.25);
    transform: translateY(-8px);
  }

  .trust-card.center:hover {
    transform: translateY(-12px);
    box-shadow: 0 12px 32px rgba(0, 229, 255, 0.15);
  }

  .trust-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.14);
  }

  .trust-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(0, 229, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 16px;
  }

  .trust-card.center .trust-icon {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: var(--glow);
  }

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

  .trust-card p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.7;
  }

  /* ─── 分步安全指引 ─── */
  .steps-section {
    position: relative;
  }

  .steps-section::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
  }

  .step-card {
    position: relative;
    padding: 24px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    transition: all 0.25s ease;
  }

  .step-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 229, 255, 0.35);
    box-shadow: 0 8px 24px rgba(0, 229, 255, 0.1);
  }

  .step-num {
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    font-variant-numeric: tabular-nums;
  }

  .step-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
  }

  .step-card p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.7;
  }

  .step-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    font-size: 12px;
    font-weight: 600;
  }

  /* ─── 安全对比 ─── */
  .compare-section {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
  }

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

  .compare-card {
    border-radius: var(--radius-large);
    padding: 32px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
  }

  .compare-card.good {
    border-color: rgba(34, 197, 94, 0.3);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.08), rgba(0, 229, 255, 0.05));
  }

  .compare-card.risk {
    border-color: rgba(239, 68, 68, 0.25);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.06), rgba(139, 92, 246, 0.04));
  }

  .compare-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
  }

  .compare-head .icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
  }

  .compare-card.good .icon-box {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
  }

  .compare-card.risk .icon-box {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
  }

  .compare-head h3 {
    font-size: 18px;
    font-weight: 700;
  }

  .compare-list li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-dim);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .compare-list li:last-child {
    border-bottom: none;
  }

  .compare-list li i {
    margin-top: 4px;
    font-size: 13px;
    flex-shrink: 0;
  }

  .compare-card.good .compare-list li i {
    color: var(--success);
  }

  .compare-card.risk .compare-list li i {
    color: var(--danger);
  }

  /* ─── 注意事项 ─── */
  .notice-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .notice-item {
    display: flex;
    gap: 16px;
    padding: 22px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.07);
    transition: all 0.25s ease;
  }

  .notice-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.25);
    transform: translateX(4px);
  }

  .notice-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 12px;
    background: rgba(0, 229, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    color: var(--primary);
  }

  .notice-item h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
  }

  .notice-item p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.7;
  }

  /* ─── FAQ ─── */
  .faq-section {
    background: rgba(255, 255, 255, 0.02);
  }

  .faq-grid {
    max-width: 860px;
    margin: 0 auto;
  }

  .faq-item {
    margin-bottom: 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    transition: all 0.25s ease;
  }

  .faq-item[open] {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.08);
  }

  .faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    user-select: none;
    position: relative;
  }

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

  .faq-item summary::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 13px;
    color: var(--text-dim);
    transition: transform 0.25s ease;
    flex-shrink: 0;
  }

  .faq-item[open] summary::after {
    transform: rotate(180deg);
    color: var(--primary);
  }

  .faq-item[open] summary {
    border-bottom: 1px solid rgba(0, 229, 255, 0.2);
  }

  .faq-answer {
    padding: 16px 20px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dim);
    background: rgba(0, 229, 255, 0.02);
  }

  /* ─── CTA ─── */
  .cta-section {
    padding: var(--space) 0;
    position: relative;
  }

  .cta-panel {
    position: relative;
    border-radius: var(--radius-large);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(0, 229, 255, 0.2);
    padding: 64px 48px;
    text-align: center;
    overflow: hidden;
  }

  .cta-panel::before {
    content: "";
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 200px;
    background: radial-gradient(ellipse, rgba(0, 229, 255, 0.25), transparent 70%);
    pointer-events: none;
  }

  .cta-panel h2 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
  }

  .cta-panel p {
    color: var(--text-dim);
    font-size: 16px;
    margin-bottom: 28px;
    position: relative;
  }

  .cta-panel .btn {
    position: relative;
  }

  .cta-decor {
    position: absolute;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: rgba(0, 229, 255, 0.3);
  }

  .cta-decor.d1 {
    width: 64px;
    height: 64px;
    top: 24px;
    left: 32px;
    transform: rotate(-12deg);
  }

  .cta-decor.d2 {
    width: 80px;
    height: 80px;
    bottom: 24px;
    right: 32px;
    border-radius: 40px;
    transform: rotate(18deg);
    color: rgba(139, 92, 246, 0.3);
  }

  /* ─── 页脚 ─── */
  .site-footer {
    background: #0B0F19;
    border-top: 2px solid transparent;
    border-image: linear-gradient(90deg, var(--primary), rgba(139, 92, 246, 0.4), transparent) 1;
    padding: 64px 0 24px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 48px;
  }

  .footer-brand .logo {
    font-size: 17px;
    margin-bottom: 14px;
  }

  .footer-brand p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.8;
    max-width: 320px;
  }

  .footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
  }

  .footer-col h4::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 2px;
  }

  .footer-col ul li {
    margin-bottom: 10px;
  }

  .footer-col ul li a {
    font-size: 14px;
    color: var(--text-dim);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
  }

  .footer-col ul li a i {
    font-size: 12px;
    color: rgba(0, 229, 255, 0.5);
    transition: transform 0.2s ease;
  }

  .footer-col ul li a:hover {
    color: var(--primary);
    transform: translateX(4px);
  }

  .footer-col ul li a:hover i {
    transform: translateX(2px);
  }

  .footer-contact li {
    font-size: 14px;
    color: var(--text-dim);
    display: flex;
    gap: 10px;
    align-items: center;
  }

  .footer-contact li i {
    color: var(--primary);
    width: 16px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
  }

  /* ─── 移动端导航 ─── */
  @media (max-width: 1024px) {
    .container {
      padding: 0 24px;
    }

    .title {
      font-size: 28px;
    }

    .section-title {
      font-size: 26px;
    }

    .nav-menu {
      position: fixed;
      top: 64px;
      right: 0;
      width: min(360px, 85vw);
      height: calc(100vh - 64px);
      flex-direction: column;
      align-items: stretch;
      gap: 4px;
      background: rgba(15, 23, 42, 0.98);
      padding: 20px;
      transform: translateX(100%);
      border-left: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: -12px 0 32px rgba(0, 0, 0, 0.4);
      transition: transform 0.25s ease;
      backdrop-filter: blur(20px);
    }

    .nav-menu.active {
      transform: translateX(0);
    }

    .nav-link {
      padding: 14px;
      font-size: 15px;
    }

    .nav-link::after {
      left: 14px;
      right: auto;
      width: 40px;
    }

    .hamburger {
      display: flex;
    }

    .mega-trigger {
      display: none;
    }

    .mega-panel {
      display: none;
    }

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

    .trust-card.center {
      transform: none;
    }

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

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

  @media (max-width: 768px) {
    :root {
      --space: var(--space-mobile);
    }

    .page-hero {
      min-height: 360px;
      padding-top: 100px;
    }

    .page-hero h1 {
      font-size: 28px;
    }

    .compare-grid,
    .notice-grid {
      grid-template-columns: 1fr;
    }

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

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

    .footer-bottom {
      flex-direction: column;
      text-align: center;
      gap: 6px;
    }

    .cta-panel {
      padding: 48px 24px;
    }

    .cta-panel h2 {
      font-size: 24px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 16px;
    }

    .section-title-wrap {
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }

    .hero-actions {
      flex-direction: column;
      align-items: center;
    }

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

    .logo-text small {
      display: none;
    }
  }

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

/* roulang page: category2 */
:root {
      --bg-primary: #0B0F19;
      --bg-secondary: #0F172A;
      --accent: #00E5FF;
      --accent-alt: #8B5CF6;
      --text-main: #F1F5F9;
      --text-mute: #94A3B8;
      --border: rgba(255, 255, 255, 0.08);
      --panel: rgba(255, 255, 255, 0.06);
      --r-sm: 8px;
      --r-card: 16px;
      --r-lg: 24px;
      --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
      --glow: 0 0 12px rgba(0, 229, 255, 0.35);
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Roboto, sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background: var(--bg-primary);
      color: var(--text-main);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    ul {
      list-style: none;
    }

    input,
    textarea {
      font-family: inherit;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 32px;
      padding-right: 32px;
    }

    /* Header */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(15, 23, 42, 0.72);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      height: 64px;
    }

    .header-inner {
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      font-weight: 700;
      font-size: 18px;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .logo-icon {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--accent), var(--accent-alt));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0B0F19;
      font-size: 16px;
      box-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
      position: relative;
    }

    .logo-icon i {
      color: #0B0F19;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-link {
      display: inline-block;
      padding: 8px 14px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.85);
      border-radius: 8px;
      position: relative;
      transition: color 0.2s;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 2px;
      height: 2px;
      background: linear-gradient(90deg, var(--accent), transparent);
      border-radius: 2px;
      opacity: 0;
      transition: opacity 0.2s;
    }

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

    .nav-link:hover::after,
    .nav-link.active::after {
      opacity: 1;
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .mega-wrap {
      position: relative;
    }

    .mega-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 38px;
      padding: 0 16px;
      border-radius: 10px;
      background: var(--panel);
      border: 1px solid rgba(255, 255, 255, 0.12);
      font-size: 14px;
      color: var(--text-main);
      transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
    }

    .mega-btn:hover {
      color: var(--accent);
      border-color: rgba(0, 229, 255, 0.5);
      box-shadow: var(--glow);
    }

    .mega-btn i {
      font-size: 12px;
      transition: transform 0.2s;
    }

    .mega-btn.open i {
      transform: rotate(180deg);
    }

    .mega-panel {
      position: absolute;
      top: calc(100% + 12px);
      right: 0;
      width: 580px;
      background: rgba(15, 23, 42, 0.96);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--r-card);
      box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5);
      padding: 24px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(6px);
      transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
      z-index: 999;
    }

    .mega-panel.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

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

    .mega-group h4 {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-mute);
      text-transform: uppercase;
      letter-spacing: 0.04em;
      margin-bottom: 14px;
      padding-bottom: 8px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .mega-group ul li + li {
      margin-top: 8px;
    }

    .mega-group ul a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 8px 10px;
      border-radius: 8px;
      font-size: 14px;
      transition: background 0.2s, color 0.2s;
    }

    .mega-group ul a:hover {
      background: rgba(255, 255, 255, 0.05);
      color: var(--accent);
    }

    .mega-group ul a i {
      font-size: 12px;
      opacity: 0.5;
    }

    .menu-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: var(--panel);
      border: 1px solid rgba(255, 255, 255, 0.12);
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--text-main);
      transition: color 0.2s, border-color 0.2s;
    }

    .menu-toggle:hover {
      color: var(--accent);
      border-color: rgba(0, 229, 255, 0.4);
    }

    /* Hero */
    .page-hero {
      position: relative;
      min-height: 360px;
      display: flex;
      align-items: center;
      padding: 120px 0 64px;
      background: linear-gradient(to right, rgba(11, 15, 25, 0.92), rgba(11, 15, 25, 0.72)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
    }

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

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 500;
      color: var(--accent);
      background: rgba(0, 229, 255, 0.08);
      border: 1px solid rgba(0, 229, 255, 0.2);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 18px;
      text-transform: uppercase;
      letter-spacing: 0.04em;
    }

    .page-hero h1 {
      font-size: 42px;
      line-height: 1.3;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      max-width: 640px;
    }

    .hero-sub {
      font-size: 16px;
      color: rgba(241, 245, 249, 0.7);
      max-width: 520px;
      margin-bottom: 28px;
      line-height: 1.8;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1;
      transition: all 0.2s;
      border: none;
      cursor: pointer;
    }

    .btn-primary {
      background: linear-gradient(135deg, #00E5FF, #8B5CF6);
      color: #fff;
      box-shadow: 0 0 12px rgba(0, 229, 255, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 18px rgba(0, 229, 255, 0.5);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.15);
    }

    .btn-ghost {
      background: transparent;
      color: var(--text-main);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-ghost:hover {
      border-color: rgba(0, 229, 255, 0.5);
      color: var(--accent);
      background: rgba(0, 229, 255, 0.05);
      transform: translateY(-2px);
    }

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

    /* Stats strip */
    .quick-stats {
      padding: 40px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .stat-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px;
      border-radius: var(--r-card);
      background: var(--panel);
      border: 1px solid rgba(255, 255, 255, 0.06);
      transition: border-color 0.2s, background 0.2s;
    }

    .stat-item:hover {
      border-color: rgba(0, 229, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
    }

    .stat-item > i {
      font-size: 24px;
      color: var(--accent);
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      background: rgba(0, 229, 255, 0.08);
      flex-shrink: 0;
    }

    .stat-item strong {
      font-size: 15px;
      font-weight: 700;
      display: block;
      line-height: 1.3;
    }

    .stat-item span {
      font-size: 13px;
      color: var(--text-mute);
      line-height: 1.4;
    }

    /* Section styles */
    .guide-section {
      padding: 96px 0;
    }

    .section-head {
      text-align: center;
      max-width: 640px;
      margin: 0 auto 56px;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: -0.01em;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-mute);
      font-size: 16px;
      line-height: 1.8;
    }

    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .guide-card {
      background: var(--panel);
      border: 1px solid rgba(255, 255, 255, 0.09);
      border-radius: var(--r-card);
      overflow: hidden;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
      position: relative;
    }

    .guide-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 60%);
      pointer-events: none;
      z-index: 0;
      border-radius: inherit;
    }

    .guide-card > * {
      position: relative;
      z-index: 1;
    }

    .card-grid > .guide-card:nth-child(3n + 2) {
      transform: translateY(12px);
    }

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

    .card-cover {
      height: 190px;
      overflow: hidden;
      position: relative;
    }

    .card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s;
    }

    .card-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      z-index: 2;
      background: rgba(11, 15, 25, 0.72);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: var(--text-main);
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 999px;
      font-weight: 500;
      letter-spacing: 0.02em;
    }

    .card-body {
      padding: 20px;
    }

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

    .card-body p {
      font-size: 14px;
      color: var(--text-mute);
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--accent);
      transition: gap 0.2s, color 0.2s;
    }

    .card-link i {
      font-size: 12px;
      transition: transform 0.2s;
    }

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

    .card-link:hover i {
      transform: translateX(2px);
    }

    /* Comparison section */
    .compare-section {
      padding: 96px 0;
      background: var(--bg-secondary);
      position: relative;
      overflow: hidden;
    }

    .compare-section::before {
      content: '';
      position: absolute;
      top: -80px;
      left: 50%;
      transform: translateX(-50%);
      width: 480px;
      height: 240px;
      background: radial-gradient(closest-side, rgba(0, 229, 255, 0.1), transparent);
      pointer-events: none;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      position: relative;
      z-index: 1;
    }

    .compare-card {
      background: var(--panel);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--r-lg);
      padding: 32px;
      position: relative;
      transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    }

    .compare-card:hover {
      border-color: rgba(0, 229, 255, 0.35);
      transform: translateY(-4px);
      box-shadow: var(--glow), var(--shadow-card);
    }

    .compare-card .icon-box {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.18), rgba(139, 92, 246, 0.18));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 20px;
      margin-bottom: 20px;
    }

    .compare-card h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .compare-card p {
      font-size: 15px;
      color: var(--text-mute);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .compare-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .compare-tags span {
      font-size: 12px;
      color: var(--text-secondary);
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 4px 10px;
      border-radius: 999px;
    }

    /* Process section */
    .process-section {
      padding: 96px 0;
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 48px;
      position: relative;
    }

    .process-grid::before {
      content: '';
      position: absolute;
      top: 40px;
      left: 15%;
      right: 15%;
      height: 2px;
      background: linear-gradient(90deg, rgba(0, 229, 255, 0.15), rgba(139, 92, 246, 0.15));
      border-radius: 2px;
      pointer-events: none;
    }

    .process-item {
      text-align: center;
      padding: 0 16px;
      position: relative;
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.16), rgba(139, 92, 246, 0.16));
      border: 1px solid rgba(0, 229, 255, 0.25);
      color: var(--accent);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 16px;
      box-shadow: 0 0 16px rgba(0, 229, 255, 0.1);
    }

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

    .process-item p {
      font-size: 14px;
      color: var(--text-mute);
      line-height: 1.8;
    }

    /* CTA banner */
    .cta-banner {
      padding: 96px 0;
      position: relative;
    }

    .cta-banner .container {
      position: relative;
      background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(139, 92, 246, 0.08));
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--r-lg);
      padding: 64px 32px;
      text-align: center;
      overflow: hidden;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }

    .cta-banner .container::before,
    .cta-banner .container::after {
      content: '';
      position: absolute;
      border-radius: 50%;
      pointer-events: none;
    }

    .cta-banner .container::before {
      width: 220px;
      height: 220px;
      background: radial-gradient(circle, rgba(0, 229, 255, 0.3), transparent 70%);
      top: -60px;
      left: -60px;
    }

    .cta-banner .container::after {
      width: 260px;
      height: 260px;
      background: radial-gradient(circle, rgba(139, 92, 246, 0.28), transparent 70%);
      bottom: -80px;
      right: -80px;
    }

    .cta-banner h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 8px;
      position: relative;
      z-index: 1;
    }

    .cta-banner p {
      font-size: 16px;
      color: var(--text-mute);
      margin-bottom: 24px;
      position: relative;
      z-index: 1;
    }

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

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

    .faq-layout {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 56px;
    }

    .faq-intro h2 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .faq-intro p {
      color: var(--text-mute);
      font-size: 15px;
      margin-bottom: 20px;
      line-height: 1.8;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: 12px;
      overflow: hidden;
      transition: background 0.2s, border-color 0.2s;
    }

    .faq-item:hover {
      background: rgba(255, 255, 255, 0.07);
    }

    .faq-item.open {
      border-top: 2px solid var(--accent);
      background: rgba(255, 255, 255, 0.06);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 20px;
      font-size: 15px;
      font-weight: 500;
      text-align: left;
      color: var(--text-main);
      transition: color 0.2s;
    }

    .faq-question i {
      color: var(--text-mute);
      font-size: 13px;
      transition: transform 0.3s;
      flex-shrink: 0;
      margin-left: 16px;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }

    .faq-answer p {
      padding: 0 20px 18px;
      font-size: 14px;
      color: var(--text-mute);
      line-height: 1.8;
    }

    /* Footer */
    .site-footer {
      background: #0B0F19;
      position: relative;
      padding-top: 64px;
    }

    .site-footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--accent), rgba(139, 92, 246, 0.6), transparent);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 40px;
    }

    .footer-brand .logo {
      font-size: 17px;
      margin-bottom: 12px;
    }

    .footer-brand p {
      color: var(--text-mute);
      font-size: 13px;
      line-height: 1.8;
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
      padding-bottom: 8px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      position: relative;
    }

    .footer-col h4::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      width: 28px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .footer-col ul li + li {
      margin-top: 8px;
    }

    .footer-col ul a {
      font-size: 14px;
      color: var(--text-mute);
      transition: color 0.2s, padding-left 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .footer-col ul a i {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.2);
      transition: color 0.2s, transform 0.2s;
    }

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

    .footer-col ul a:hover i {
      color: var(--accent);
      transform: translateX(2px);
    }

    .footer-contact li {
      font-size: 14px;
      color: var(--text-mute);
      display: flex;
      align-items: center;
      gap: 10px;
      line-height: 1.6;
    }

    .footer-contact li i {
      color: var(--accent);
      font-size: 14px;
      width: 18px;
      text-align: center;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
    }

    /* Focus styles */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      border-radius: 4px;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.96);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px 24px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        z-index: 999;
        gap: 4px;
      }

      .nav-menu.open {
        transform: translateY(0);
      }

      .nav-link {
        padding: 12px 16px;
      }

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

      .menu-toggle {
        display: flex;
      }

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

      .card-grid > .guide-card:nth-child(3n + 2) {
        transform: none;
      }

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

      .guide-section,
      .compare-section,
      .process-section,
      .faq-section,
      .cta-banner {
        padding: 72px 0;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding-left: 24px;
        padding-right: 24px;
      }

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

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

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

      .process-grid::before {
        display: none;
      }

      .page-hero h1 {
        font-size: 32px;
      }

      .section-head h2 {
        font-size: 26px;
      }

      .cta-banner h2 {
        font-size: 24px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .logo span:last-child {
        font-size: 15px;
      }

      .logo-icon {
        width: 30px;
        height: 30px;
        font-size: 14px;
      }

      .mega-btn {
        display: none;
      }

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

      .card-grid > .guide-card:nth-child(3n + 2) {
        transform: none;
      }

      .stats-row {
        grid-template-columns: 1fr;
        gap: 12px;
      }

      .page-hero {
        min-height: 320px;
        padding: 100px 0 48px;
      }

      .page-hero h1 {
        font-size: 26px;
      }

      .hero-sub {
        font-size: 14px;
      }

      .hero-actions {
        flex-direction: column;
        align-items: flex-start;
      }

      .btn {
        width: 100%;
      }

      .guide-section,
      .compare-section,
      .process-section,
      .faq-section,
      .cta-banner {
        padding: 56px 0;
      }

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

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

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

      .compare-card {
        padding: 24px;
      }
    }