/* roulang page: index */
:root {
  --brand-blue: #3B82F6;
  --brand-blue-light: #60A5FA;
  --brand-cyan: #22D3EE;
  --brand-gold: #C9A45C;
  --bg-base: #0B1220;
  --bg-deep: #0F1E3A;
  --bg-raised: #16263F;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-bg-hover: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(255,255,255,0.14);
  --text-title: #EDF2F7;
  --text-body: #A0AEC0;
  --text-muted: #718096;
  --text-disabled: #4A5568;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 10px 30px rgba(0,0,0,0.2);
  --shadow-float: 0 20px 50px rgba(0,0,0,0.45);
  --glow-blue: 0 0 20px rgba(59,130,246,0.35);
  --glow-blue-hover: 0 0 35px rgba(59,130,246,0.55);
  --glow-gold: 0 0 24px rgba(201,164,92,0.25);
  --space-section: 80px;
  --container-max: 1280px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:#0B1220;
  background-image:linear-gradient(135deg,#0B1220 0%,#0F1E3A 60%,#0B1220 100%);
  color:var(--text-body);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:none;cursor:pointer}
.container{max-width:var(--container-max);margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1024px){.container{padding-left:64px;padding-right:64px}}
section{padding:var(--space-section) 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-tag{display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--brand-cyan);background:rgba(34,211,238,0.08);border:1px solid rgba(34,211,238,0.15);padding:5px 16px;border-radius:999px;margin-bottom:16px}
.section-title{font-size:32px;font-weight:700;color:var(--text-title);line-height:1.3;letter-spacing:-0.01em}
.section-desc{font-size:16px;line-height:1.8;color:var(--text-muted);margin-top:14px}
@media(min-width:768px){.section-title{font-size:40px}}
/* Nav */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;height:64px;
  background:rgba(11,18,32,0.82);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  border-bottom:1px solid rgba(255,255,255,0.05);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header .header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 16px}
.logo{display:flex;align-items:center;gap:10px;min-width:140px}
.logo-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#3B82F6,#60A5FA);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:16px;color:#fff;box-shadow:0 4px 16px rgba(59,130,246,0.35)}
.logo-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:-0.01em}
.logo-sub{font-size:12px;color:var(--text-muted);font-weight:400;margin-top:1px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  font-size:14px;font-weight:500;color:#94A3B8;
  padding:8px 14px;border-radius:8px;transition:color .2s,background .2s;
  position:relative;
}
.nav-links a::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:0;height:2px;border-radius:2px;background:linear-gradient(90deg,#3B82F6,#60A5FA);transition:width .3s ease}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:60%}
.nav-links a.active{color:#60A5FA}
.nav-links a.active::after{width:60%;background:linear-gradient(90deg,#3B82F6,#60A5FA)}
.nav-actions{display:flex;align-items:center;gap:12px}
.more-trigger{
  font-size:14px;color:#94A3B8;font-weight:500;padding:8px 16px;border-radius:8px;
  transition:background .2s,color .2s;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);
}
.more-trigger:hover{background:rgba(255,255,255,0.08);color:#fff}
.mega-panel{
  position:absolute;top:64px;right:16px;width:340px;
  background:rgba(15,30,58,0.95);backdrop-filter:blur(32px);-webkit-backdrop-filter:blur(32px);
  border:1px solid rgba(255,255,255,0.1);border-radius:16px;padding:20px;
  box-shadow:0 20px 50px rgba(0,0,0,0.5);
  opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s,transform .25s,visibility .25s;
}
.mega-panel.show{opacity:1;visibility:visible;transform:translateY(0)}
.mega-panel h4{font-size:12px;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-muted);margin-bottom:12px;font-weight:700}
.mega-cats a,.mega-latest a{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:10px;transition:background .2s;font-size:14px;color:#CBD5E0}
.mega-cats a:hover,.mega-latest a:hover{background:rgba(255,255,255,0.06);color:#fff}
.mega-cats i{color:var(--brand-cyan);font-size:13px;margin-right:8px}
.mega-latest a .meta{font-size:12px;color:var(--text-muted);flex-shrink:0;margin-left:10px}
.nav-toggle{display:none;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.1);border-radius:8px;color:#fff;width:40px;height:40px;align-items:center;justify-content:center;font-size:18px}
.mobile-menu{display:none;position:fixed;top:64px;left:0;right:0;background:rgba(11,18,32,0.97);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.06);padding:20px;z-index:49;flex-direction:column;gap:6px}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 16px;border-radius:10px;font-size:16px;font-weight:500;color:#CBD5E0}
.mobile-menu a:hover,.mobile-menu a.active{background:rgba(255,255,255,0.06);color:#fff}
@media(max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .more-trigger{display:none}
}
@media(min-width:1024px){
  .nav-toggle{display:none}
  .mobile-menu{display:none!important}
}
/* Hero */
.hero{
  min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;
  padding-top:110px;padding-bottom:60px;
  background:linear-gradient(180deg,rgba(11,18,32,0.90) 0%,rgba(11,18,32,0.72) 100%),
             url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background:radial-gradient(ellipse at 20% 50%,rgba(21,42,82,0.55) 0%,transparent 70%);
  pointer-events:none;
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none}
.hero-glow-1{width:380px;height:380px;top:-80px;right:10%;background:rgba(34,211,238,0.14)}
.hero-glow-2{width:300px;height:300px;bottom:-100px;left:5%;background:rgba(59,130,246,0.16)}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(148,163,184,0.04) 1px,transparent 1px),
  linear-gradient(90deg,rgba(148,163,184,0.04) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(34,211,238,0.1);border:1px solid rgba(34,211,238,0.2);border-radius:999px;padding:6px 16px;font-size:13px;color:var(--brand-cyan);font-weight:500;margin-bottom:28px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-cyan);box-shadow:0 0 8px rgba(34,211,238,0.7);animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}
.hero h1{font-size:44px;font-weight:900;line-height:1.2;letter-spacing:-0.02em;color:#fff}
.hero h1 .grad-text{
  background:linear-gradient(90deg,#3B82F6,#22D3EE);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;line-height:1.8;color:#A0AEC0;max-width:540px;margin-top:22px;font-weight:400}
.hero-ctas{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,#3B82F6,#60A5FA);
  color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:999px;
  box-shadow:var(--glow-blue);transition:all .3s ease;border:none;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow-blue-hover);filter:brightness(1.06)}
.btn-primary:active{transform:scale(0.98)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;background:transparent;color:#CBD5E0;
  font-weight:500;font-size:15px;padding:14px 32px;border-radius:999px;
  border:1px solid rgba(255,255,255,0.22);transition:all .3s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.4);color:#fff}
.btn-ghost:active{transform:scale(0.98)}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:3;color:#64748B;font-size:14px;display:flex;flex-direction:column;align-items:center;gap:8px;animation:float-down 2s infinite}
@keyframes float-down{0%,100%{transform:translateY(0) translateX(-50%)}50%{transform:translateY(8px) translateX(-50%)}}
@media(max-width:767px){
  .hero{padding-top:120px}
  .hero h1{font-size:36px}
  .hero-sub{font-size:16px}
}
/* Features */
#features{padding-top:60px}
.feature-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.feature-grid{grid-template-columns:1fr 1fr 1fr;gap:28px}.feature-card:nth-child(2){margin-top:24px}.feature-card:nth-child(1),.feature-card:nth-child(3){margin-top:0}}
.feature-card{
  background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;
  padding:32px 26px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);transition:all .35s ease;
  position:relative;overflow:hidden;
}
.feature-card:hover{transform:translateY(-6px);background:var(--glass-bg-hover);border-color:var(--glass-border-hover)}
.feature-icon{
  width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(59,130,246,0.16),rgba(34,211,238,0.12));
  border:1px solid rgba(59,130,246,0.2);color:var(--brand-cyan);font-size:24px;margin-bottom:22px;
}
.feature-card h3{font-size:20px;font-weight:700;color:var(--text-title);margin-bottom:10px}
.feature-card p{font-size:14px;line-height:1.75;color:var(--text-muted)}
.feature-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand-blue-light);font-size:14px;font-weight:500;margin-top:20px;transition:gap .2s}
.feature-more:hover{gap:12px}
/* Showcase */
#showcase{background:rgba(15,30,58,0.35)}
.showcase-row{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;margin-bottom:80px}
@media(min-width:1024px){.showcase-row{grid-template-columns:1fr 1fr;gap:64px}}
.showcase-img{
  border-radius:24px;overflow:hidden;box-shadow:var(--shadow-float);border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.02);backdrop-filter:blur(8px);
}
.showcase-img img{width:100%;height:auto;display:block;object-fit:cover}
.showcase-text h3{font-size:26px;font-weight:700;color:var(--text-title);margin-bottom:14px;line-height:1.3}
.showcase-text p{font-size:16px;line-height:1.85;color:var(--text-muted);margin-bottom:20px}
.showcase-list{list-style:none;padding:0}
.showcase-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#CBD5E0;padding:7px 0}
.showcase-list li i{color:var(--brand-blue-light);font-size:14px;margin-top:5px;flex-shrink:0}
@media(max-width:1023px){.showcase-row.mirror .showcase-img{order:2}}
/* proof */
.proof-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:64px}
@media(max-width:767px){.proof-stats{grid-template-columns:1fr;gap:16px}}
.stat-card{text-align:center;padding:28px 16px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px}
.stat-num{font-size:44px;font-weight:900;background:linear-gradient(135deg,#C9A45C,#E8C88A);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:8px}
@media(max-width:767px){.stat-num{font-size:36px}}
.proof-cards{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.proof-cards{grid-template-columns:1fr 1fr}}
.proof-card{
  background:var(--glass-bg);backdrop-filter:blur(16px);border:1px solid var(--glass-border);
  border-radius:20px;padding:32px;box-shadow:var(--shadow-card);transition:all .3s;
}
.proof-card:hover{background:var(--glass-bg-hover);border-color:var(--glass-border-hover)}
.proof-quote{font-size:15px;line-height:1.9;color:#E2E8F0;margin-bottom:24px;position:relative;padding-left:22px}
.proof-quote::before{content:'“';position:absolute;left:0;top:-12px;font-size:36px;color:var(--brand-gold);font-family:Georgia,serif}
.proof-person{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,rgba(59,130,246,0.5),rgba(34,211,238,0.4));flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px}
.proof-name{font-size:14px;font-weight:600;color:var(--text-title)}
.proof-title{font-size:12px;color:var(--text-muted);margin-top:2px}
/* News */
#news .news-panel{background:var(--glass-bg);backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-card)}
.news-header{display:flex;align-items:center;justify-content:space-between;padding:26px 32px 16px}
.news-header h2{font-size:24px;font-weight:700;color:var(--text-title)}
.news-header a{font-size:14px;color:var(--brand-blue-light);font-weight:500;transition:gap .2s;display:inline-flex;align-items:center;gap:6px}
.news-header a:hover{gap:12px;color:var(--brand-cyan)}
.news-list{padding:0 16px 16px}
.news-item{
  display:flex;align-items:center;gap:20px;padding:18px 16px;border-radius:14px;
  transition:background .25s;position:relative;
}
.news-item:hover{background:rgba(255,255,255,0.04)}
.news-item + .news-item{border-top:1px solid rgba(255,255,255,0.05)}
.news-thumb{width:120px;height:80px;border-radius:12px;overflow:hidden;flex-shrink:0;background:#1E293B}
.news-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.news-content{flex:1;min-width:0}
.news-title{font-size:16px;font-weight:600;color:var(--text-title);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s}
.news-item:hover .news-title{color:var(--brand-blue-light)}
.news-summary{font-size:14px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:6px}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:10px}
.badge-cat{display:inline-block;font-size:12px;font-weight:500;color:#60A5FA;background:rgba(59,130,246,0.12);border:1px solid rgba(59,130,246,0.22);padding:2px 12px;border-radius:999px}
.news-time{font-size:13px;color:var(--text-disabled)}
.news-more{font-size:14px;color:var(--brand-blue-light);font-weight:500;white-space:nowrap;transition:transform .2s,color .2s;display:inline-flex;align-items:center;gap:4px}
.news-item:hover .news-more{transform:translateX(3px);color:var(--brand-cyan)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 30px 70px;color:var(--text-muted)}
.empty-state .empty-icon{font-size:48px;margin-bottom:16px;opacity:0.4}
.empty-state p{font-size:16px}
@media(max-width:767px){
  .news-thumb{width:80px;height:56px}
  .news-summary{display:none}
  .news-more{display:none}
  .news-title{font-size:15px}
}
/* pricing */
#pricing{position:relative}
#pricing .pricing-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 80% 20%,rgba(59,130,246,0.12),transparent 50%);pointer-events:none}
.pricing-grid{display:grid;grid-template-columns:1fr;gap:48px;position:relative;z-index:2}
@media(min-width:1024px){.pricing-grid{grid-template-columns:1fr 1fr;gap:64px}}
.pricing-left h2{font-size:32px;font-weight:700;color:var(--text-title);line-height:1.3;margin-bottom:20px}
.pricing-left p{font-size:16px;line-height:1.85;color:var(--text-muted);margin-bottom:30px}
.pricing-phone{display:inline-flex;align-items:center;gap:14px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:16px 24px;transition:all .3s}
.pricing-phone:hover{border-color:var(--glass-border-hover);background:var(--glass-bg-hover)}
.pricing-phone .phone-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,rgba(59,130,246,0.25),rgba(34,211,238,0.2));display:flex;align-items:center;justify-content:center;color:var(--brand-cyan);font-size:20px}
.pricing-phone .phone-num{font-size:22px;font-weight:800;color:var(--text-title);letter-spacing:0.02em}
.pricing-phone .phone-label{font-size:13px;color:var(--text-muted)}
.pricing-cards{display:flex;flex-direction:column;gap:28px}
.price-card{
  background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;
  padding:32px;backdrop-filter:blur(12px);transition:all .35s;position:relative;
}
.price-card:hover{transform:translateY(-4px)}
.price-card.featured{
  background:linear-gradient(to bottom,rgba(59,130,246,0.12),rgba(255,255,255,0.02));
  border:2px solid rgba(201,164,92,0.6);box-shadow:0 20px 50px rgba(0,0,0,0.4);
}
.price-badge{
  position:absolute;top:16px;right:16px;background:var(--brand-gold);color:#0B0E14;
  font-size:12px;font-weight:800;padding:4px 14px;border-radius:999px;letter-spacing:0.5px;
}
.price-name{font-size:14px;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-muted);font-weight:600}
.price-amount{display:flex;align-items:baseline;gap:4px;margin-top:12px}
.price-amount .cur{font-size:20px;font-weight:700;color:var(--text-title)}
.price-amount .num{font-size:42px;font-weight:900;color:#fff;letter-spacing:-0.02em}
.price-amount .per{font-size:14px;color:var(--text-muted)}
.price-feats{list-style:none;margin-top:24px;display:flex;flex-direction:column;gap:12px}
.price-feats li{display:flex;align-items:center;gap:10px;font-size:14px;color:#CBD5E0}
.price-feats .feat-icon{
  width:22px;height:22px;border-radius:50%;background:rgba(59,130,246,0.2);
  color:var(--brand-blue-light);display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;
}
.btn-block{display:flex;justify-content:center;width:100%;padding:14px 24px;border-radius:999px;font-size:15px;font-weight:700;margin-top:28px;transition:all .3s}
.btn-block.ghost{
  background:transparent;border:1px solid rgba(255,255,255,0.25);color:#E2E8F0;
}
.btn-block.ghost:hover{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.45)}
.btn-block.solid{
  background:linear-gradient(135deg,#3B82F6,#60A5FA);color:#fff;box-shadow:var(--glow-blue);
}
.btn-block.solid:hover{transform:translateY(-2px);box-shadow:var(--glow-blue-hover)}
/* FAQ */
#faq{background:rgba(15,30,58,0.28)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.08);
  border-radius:16px;margin-bottom:14px;overflow:hidden;transition:all .3s;
}
.faq-item.open{border-color:rgba(59,130,246,0.3);background:rgba(255,255,255,0.05)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-weight:600;font-size:15px;color:var(--text-title);gap:16px}
.faq-icon{
  width:28px;height:28px;border-radius:50%;border:1px solid rgba(255,255,255,0.2);
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text-muted);
  transition:transform .3s,border-color .3s;flex-shrink:0;
}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--brand-blue-light);color:var(--brand-blue-light)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .3s}
.faq-a-inner{padding:0 24px 22px;font-size:14px;line-height:1.85;color:var(--text-muted)}
.faq-item.open .faq-a{max-height:600px}
.faq-item.open .faq-a-inner{padding-top:4px}
/* bottom CTA */
.bottom-cta{
  position:relative;padding:90px 0;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(11,18,32,0.85) 0%,rgba(11,18,32,0.75) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.bottom-cta .cta-inner{position:relative;z-index:2;max-width:640px;margin:0 auto;text-align:center}
.bottom-cta h2{font-size:32px;font-weight:900;color:#fff;line-height:1.3;letter-spacing:-0.01em}
.bottom-cta p{font-size:16px;color:#A0AEC0;margin-top:14px;line-height:1.8}
.bottom-cta .btn-primary{margin-top:32px}
@media(min-width:768px){.bottom-cta h2{font-size:44px}}
/* Footer */
.site-footer{background:#080D18;border-top:1px solid rgba(255,255,255,0.05);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding-bottom:48px}
@media(min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.4fr}}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-muted);max-width:280px}
.footer-social{display:flex;gap:12px;margin-top:18px}
.footer-social .social-icon{
  width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.07);
  display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:15px;transition:all .3s;
}
.footer-social .social-icon:hover{color:#fff;background:rgba(59,130,246,0.2);border-color:rgba(59,130,246,0.4)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-muted);padding:5px 0;transition:color .2s}
.footer-col a:hover{color:var(--brand-blue-light)}
.footer-contact{font-size:14px;color:var(--text-muted);line-height:1.9}
.footer-contact i{width:20px;color:var(--brand-blue-light);margin-right:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.05);padding:22px 0;display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-disabled)}
@media(min-width:768px){.footer-bottom{flex-direction:row}}
.footer-bottom a{color:var(--text-muted);transition:color .2s}
.footer-bottom a:hover{color:var(--brand-blue-light)}
/* Float CTA */
.float-cta{
  position:fixed;bottom:24px;right:24px;z-index:40;width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,#3B82F6,#60A5FA);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--glow-blue);border:none;font-size:20px;cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .4s,transform .4s,box-shadow .3s;
}
.float-cta.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.float-cta:hover{box-shadow:var(--glow-blue-hover);transform:translateY(-3px)}
.float-cta:active{transform:scale(0.95)}
@media(max-width:767px){.float-cta{width:48px;height:48px;bottom:16px;right:16px}}

/* roulang page: article */
:root {
  --bg-base: #0B1220;
  --bg-deep: #0F1E3A;
  --bg-deeper: #080D18;
  --brand-blue: #3B82F6;
  --brand-blue-light: #60A5FA;
  --brand-cyan: #22D3EE;
  --brand-gold: #C9A45C;
  --text-strong: #EDF2F7;
  --text-base: #A0AEC0;
  --text-muted: #718096;
  --text-disabled: #4A5568;
  --border-subtle: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-btn: 0 0 20px rgba(59,130,246,0.35);
  --shadow-btn-hover: 0 0 35px rgba(59,130,246,0.55);
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: linear-gradient(160deg, #0B1220 0%, #0F1E3A 100%);
  color: var(--text-base);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }
::selection { background: rgba(59,130,246,0.3); color: #fff; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px; margin-bottom: 36px;
}
.section-title { font-size: 30px; font-weight: 800; color: var(--text-strong); letter-spacing: -0.02em; }
.section-link { font-size: 14px; color: var(--brand-blue-light); font-weight: 600; transition: color .2s, gap .2s; display: inline-flex; align-items: center; gap: 6px; }
.section-link:hover { color: var(--brand-cyan); gap: 10px; }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
  box-shadow: var(--shadow-btn);
  transition: transform .2s, box-shadow .2s, filter .2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-btn-hover); filter: brightness(1.08); }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; color: #D1D5DB;
  border: 1px solid rgba(255,255,255,0.22);
  background: transparent;
  transition: background .2s, border-color .2s, transform .2s;
}
.btn-ghost:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.35); transform: translateY(-2px); }
.btn-ghost:active { transform: scale(0.98); }
.btn-text {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 600; color: var(--brand-blue-light);
  transition: color .2s, gap .2s;
}
.btn-text:hover { color: var(--brand-cyan); gap: 12px; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: 64px;
  background: rgba(11,18,32,0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.header-inner { position: relative; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 12px;
  background: linear-gradient(135deg, #3B82F6, #22D3EE);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 900; color: #fff;
  box-shadow: 0 0 18px rgba(59,130,246,0.3);
}
.logo-text { font-size: 18px; font-weight: 800; color: var(--text-strong); letter-spacing: -0.02em; line-height: 1; }
.logo-sub { font-size: 12px; color: var(--text-muted); font-weight: 400; margin-left: 4px; letter-spacing: 0; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative; padding: 8px 16px; font-size: 14px; font-weight: 500;
  color: #94A3B8; border-radius: 8px; transition: color .2s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text-strong); }
.nav-links a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-cyan));
  opacity: 0; transform: scaleX(0.4); transition: opacity .25s, transform .25s;
}
.nav-links a:hover::after, .nav-links a.active::after { opacity: 1; transform: scaleX(1); }
.nav-links a.active { color: var(--brand-blue-light); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.more-trigger {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 600; color: #94A3B8;
  padding: 8px 16px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: background .2s, border-color .2s, color .2s;
}
.more-trigger:hover { color: #fff; border-color: rgba(255,255,255,0.25); background: rgba(255,255,255,0.04); }
.nav-toggle {
  display: none; width: 42px; height: 42px; align-items: center; justify-content: center;
  border-radius: 12px; font-size: 18px; color: #E2E8F0;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  transition: background .2s, border-color .2s;
}
.nav-toggle:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.2); }
.mega-panel {
  position: absolute; top: calc(100% + 12px); right: 0;
  width: 340px;
  background: rgba(15,30,58,0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .25s, transform .25s, visibility .25s;
}
.mega-panel.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-panel h4 { font-size: 13px; font-weight: 700; color: #64748B; margin-bottom: 12px; letter-spacing: 0.05em; }
.mega-cats { display: flex; flex-direction: column; gap: 4px; }
.mega-cats a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; border-radius: 12px;
  font-size: 14px; font-weight: 500; color: #D1D5DB;
  transition: background .2s, color .2s;
}
.mega-cats a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.mega-cats a span { display: inline-flex; align-items: center; gap: 10px; }
.mega-cats a i { color: #64748B; }
.mega-latest { display: flex; flex-direction: column; gap: 2px; }
.mega-latest a {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 12px; border-radius: 12px;
  font-size: 14px; color: #D1D5DB; transition: background .2s, color .2s;
}
.mega-latest a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.mega-latest a .meta { font-size: 12px; color: #475569; white-space: nowrap; }

/* ===== Breadcrumb ===== */
.breadcrumb-bar { padding-top: 64px; background: rgba(255,255,255,0.02); border-bottom: 1px solid rgba(255,255,255,0.05); }
.breadcrumb-inner {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 13px; color: #64748B; padding: 14px 0;
}
.breadcrumb-inner a { color: #94A3B8; transition: color .2s; display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb-inner a:hover { color: var(--brand-blue-light); }
.breadcrumb-inner .sep { font-size: 10px; color: #475569; }
.breadcrumb-inner .current { color: #CBD5E1; max-width: 240px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===== Live Bar ===== */
.live-bar {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: #94A3B8;
  background: rgba(34,211,238,0.06);
  border: 1px solid rgba(34,211,238,0.15);
  border-radius: 999px;
  padding: 6px 16px;
  margin: 20px 0 0;
  width: fit-content;
}
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: #22D3EE; box-shadow: 0 0 10px rgba(34,211,238,0.8); animation: pulse 1.6s infinite; }
.live-time { color: #64748B; font-size: 12px; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1);} 50% { opacity: 0.5; transform: scale(0.8);} }

/* ===== Article Layout ===== */
.article-wrap { padding: 32px 0 80px; }
.article-layout { display: grid; grid-template-columns: 8fr 4fr; gap: 32px; align-items: start; }
.article-main {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 40px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.article-main h1 {
  font-size: 34px; font-weight: 900; line-height: 1.3;
  color: var(--text-strong); letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.article-meta {
  display: flex; align-items: center; flex-wrap: wrap; gap: 16px;
  padding-bottom: 20px; margin-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 13px; color: #64748B;
}
.article-meta .meta-item { display: inline-flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--brand-blue-light); }
.badge {
  display: inline-block; padding: 3px 12px; border-radius: 999px;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.25);
  color: #60A5FA; font-size: 12px; font-weight: 600;
}
.article-cover { margin-bottom: 28px; border-radius: 16px; overflow: hidden; border: 1px solid rgba(255,255,255,0.06); }
.article-cover img { width: 100%; height: 320px; object-fit: cover; }

.article-body { font-size: 16px; line-height: 1.8; color: #A0AEC0; }
.article-body p { margin-bottom: 24px; }
.article-body h2 { font-size: 26px; font-weight: 800; color: var(--text-strong); margin: 40px 0 16px; }
.article-body h3 { font-size: 20px; font-weight: 700; color: #E2E8F0; margin: 32px 0 12px; }
.article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 24px; }
.article-body li { margin-bottom: 8px; line-height: 1.75; }
.article-body blockquote {
  border-left: 3px solid var(--brand-blue);
  background: rgba(255,255,255,0.03);
  border-radius: 0 12px 12px 0;
  padding: 16px 24px;
  margin: 24px 0;
  color: #CBD5E1;
}
.article-body img { border-radius: 14px; margin: 24px 0; border: 1px solid rgba(255,255,255,0.08); }
.article-body a { color: var(--brand-blue-light); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--brand-cyan); }

.article-tags {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  padding: 20px 0 0; margin-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.article-tags .tag {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 13px; color: #94A3B8;
}
.article-pager {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  margin-top: 32px; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  padding: 26px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.sidebar-card h3 {
  font-size: 17px; font-weight: 700; color: var(--text-strong);
  margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
}
.sidebar-card h3 i { color: var(--brand-blue-light); }
.rec-list { list-style: none; }
.rec-list li { border-bottom: 1px solid rgba(255,255,255,0.05); }
.rec-list li:last-child { border-bottom: none; }
.rec-list a {
  display: block; padding: 12px 0; transition: padding-left .2s;
}
.rec-list a:hover { padding-left: 6px; }
.rec-list .rec-title { display: block; font-size: 14px; font-weight: 600; color: #CBD5E1; line-height: 1.45; transition: color .2s; }
.rec-list a:hover .rec-title { color: var(--brand-blue-light); }
.rec-list .rec-meta { display: block; font-size: 12px; color: #475569; margin-top: 4px; }
.side-links { display: flex; flex-direction: column; gap: 6px; }
.side-links a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 12px;
  font-size: 14px; font-weight: 500; color: #94A3B8;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  transition: background .2s, border-color .2s, color .2s;
}
.side-links a:hover { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.15); color: #fff; }
.side-links a i { width: 18px; text-align: center; color: var(--brand-blue-light); }

/* ===== Related Section ===== */
.related-section { padding: 60px 0 40px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.related-card:hover { transform: translateY(-5px); border-color: rgba(255,255,255,0.18); box-shadow: 0 16px 40px rgba(0,0,0,0.3); }
.related-card .rc-img { height: 170px; overflow: hidden; }
.related-card .rc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.related-card:hover .rc-img img { transform: scale(1.04); }
.related-card .rc-body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.related-card h3 { font-size: 17px; font-weight: 700; line-height: 1.45; color: #E2E8F0; }
.related-card h3 a { transition: color .2s; }
.related-card h3 a:hover { color: var(--brand-blue-light); }
.related-card p { font-size: 13px; color: #718096; line-height: 1.65; }
.rc-meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: #475569; margin-top: auto; }

/* ===== CTA Section ===== */
.cta-section { padding: 40px 0 80px; }
.cta-inner {
  position: relative;
  border-radius: 24px;
  padding: 56px 48px;
  background:
    linear-gradient(rgba(11,18,32,0.92), rgba(15,30,58,0.9)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.cta-inner::before {
  content: ""; position: absolute; top: -60px; right: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: rgba(34,211,238,0.12); filter: blur(80px);
}
.cta-inner h2 { font-size: 32px; font-weight: 900; color: var(--text-strong); position: relative; z-index: 1; line-height: 1.3; }
.cta-inner p { font-size: 15px; color: #94A3B8; max-width: 480px; position: relative; z-index: 1; }
.cta-btn-row { display: flex; gap: 14px; margin-top: 10px; position: relative; z-index: 1; flex-wrap: wrap; justify-content: center; }
.cta-note { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #64748B; margin-top: 8px; position: relative; z-index: 1; }

/* ===== Empty State ===== */
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 80px 24px;
}
.empty-state .empty-icon { width: 72px; height: 72px; border-radius: 50%; 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: 28px; color: #64748B; margin-bottom: 20px; }
.empty-state p { font-size: 18px; font-weight: 600; color: #94A3B8; margin-bottom: 20px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deeper);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 56px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: #64748B; max-width: 280px; }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.social-icon {
  width: 38px; height: 38px; border-radius: 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: #94A3B8; font-size: 15px;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.social-icon:hover { background: rgba(59,130,246,0.15); color: #fff; border-color: rgba(59,130,246,0.3); transform: translateY(-2px); }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #E2E8F0; margin-bottom: 14px; }
.footer-col a {
  display: block; padding: 6px 0; font-size: 14px; color: #64748B;
  transition: color .2s, padding-left .2s;
}
.footer-col a:hover { color: var(--brand-blue-light); padding-left: 4px; }
.footer-contact p { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: #64748B; padding: 6px 0; }
.footer-contact i { color: var(--brand-blue-light); margin-top: 4px; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  border-top: 1px solid rgba(255,255,255,0.05);
  margin-top: 48px; padding: 18px 0;
  font-size: 13px; color: #475569;
}
.footer-bottom a { color: #64748B; transition: color .2s; }
.footer-bottom a:hover { color: var(--brand-blue-light); }

/* ===== Floating CTA ===== */
.floating-cta {
  position: fixed; bottom: 24px; right: 24px; z-index: 40;
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, #3B82F6, #22D3EE);
  box-shadow: 0 0 25px rgba(59,130,246,0.5);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px;
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: opacity .3s, transform .3s, box-shadow .3s;
}
.floating-cta:hover { box-shadow: 0 0 40px rgba(59,130,246,0.7); transform: translateY(-2px); }
.floating-cta.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .related-grid { gap: 18px; }
  .article-main { padding: 32px; }
}
@media (max-width: 1024px) {
  .section { padding: 60px 0; }
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(11,18,32,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 16px 20px;
    display: none;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 16px; font-size: 15px; border-radius: 12px; }
  .nav-links a::after { display: none; }
  .nav-links a.active, .nav-links a:hover { background: rgba(255,255,255,0.05); color: var(--brand-blue-light); }
  .nav-toggle { display: inline-flex; }
  .article-layout { grid-template-columns: 1fr; }
  .article-wrap { padding: 24px 0 60px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .container { padding: 0 16px; }
  .article-main { padding: 24px 20px; border-radius: 16px; }
  .article-main h1 { font-size: 26px; }
  .article-cover img { height: 200px; }
  .article-pager { flex-direction: column; align-items: stretch; }
  .cta-inner { padding: 36px 20px; }
  .cta-inner h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .related-grid { grid-template-columns: 1fr; }
  .mega-panel { right: -60px; width: 300px; }
  .floating-cta { width: 48px; height: 48px; font-size: 17px; bottom: 16px; right: 16px; }
}
@media (max-width: 520px) {
  .logo-text { font-size: 16px; }
  .logo-sub { display: none; }
  .more-trigger span { display: none; }
  .more-trigger { padding: 8px 12px; }
  .breadcrumb-inner .current { max-width: 150px; }
  .cta-btn-row { flex-direction: column; width: 100%; }
  .cta-btn-row .btn-primary, .cta-btn-row .btn-ghost { width: 100%; }
  .article-meta { gap: 10px; }
}

/* roulang page: category1 */
:root {
  --bg-base: #0B1220;
  --bg-elev: #0F1E3A;
  --blue-1: #3B82F6;
  --blue-2: #60A5FA;
  --cyan: #22D3EE;
  --gold: #C9A45C;
  --title: #EDF2F7;
  --text: #A0AEC0;
  --text-weak: #718096;
  --border: rgba(255,255,255,0.08);
  --border-light: rgba(255,255,255,0.14);
  --glass: rgba(255,255,255,0.04);
  --glass-hover: rgba(255,255,255,0.07);
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.25);
  --shadow-glow: 0 0 20px rgba(59,130,246,0.35);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
html body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(ellipse at top left, #0F1E3A 0%, #0B1220 60%);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--title);
}

.container {
  width: auto;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}
@media (min-width: 1024px) {
  .container {
    padding-left: 48px;
    padding-right: 48px;
  }
}
.section {
  padding: 56px 0;
}
@media (min-width: 768px) {
  .section {
    padding: 80px 0;
  }
}
.section-alt {
  background: rgba(255,255,255,0.018);
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 44px;
}
.section-head .section-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #EDF2F7;
  margin-bottom: 10px;
}
@media (min-width: 768px) {
  .section-head .section-title {
    font-size: 34px;
  }
}
.section-head .section-desc {
  font-size: 15px;
  color: #94A3B8;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  background: linear-gradient(135deg, #3B82F6, #2563EB);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.5;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: all 0.25s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(59,130,246,0.55);
  background: linear-gradient(135deg, #60A5FA, #2563EB);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: #E2E8F0;
  font-weight: 500;
  font-size: 14px;
  line-height: 1.5;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.35);
  color: #fff;
}
.btn-ghost:active {
  transform: scale(0.98);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.25);
  color: #60A5FA;
  font-size: 12px;
  font-weight: 500;
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #60A5FA;
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}
.text-link:hover {
  color: #93C5FD;
}
.text-link i {
  transition: transform 0.2s;
}
.text-link:hover i {
  transform: translateX(3px);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 64px;
  background: rgba(11,18,32,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #3B82F6, #22D3EE);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 14px rgba(59,130,246,0.4);
}
.logo-text {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  white-space: nowrap;
}
.logo-text .logo-sub {
  font-size: 12px;
  color: #64748B;
  font-weight: 400;
  margin-left: 4px;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-links a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: #94A3B8;
  border-radius: 8px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}
.nav-links a:hover {
  color: #fff;
  background: rgba(255,255,255,0.04);
  border-bottom-color: rgba(59,130,246,0.6);
}
.nav-links a.active {
  color: #60A5FA;
  border-bottom-color: #3B82F6;
  background: rgba(59,130,246,0.08);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.more-trigger {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  color: #CBD5E1;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.more-trigger:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  color: #fff;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  color: #CBD5E1;
  font-size: 16px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-toggle:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.2);
}
.mega-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 380px;
  background: rgba(15,30,58,0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.28s ease;
  z-index: 60;
}
.mega-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-panel h4 {
  font-size: 13px;
  font-weight: 700;
  color: #94A3B8;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
.mega-cats {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
}
.mega-cats a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: #CBD5E1;
  transition: all 0.2s;
}
.mega-cats a:hover {
  background: rgba(255,255,255,0.06);
  color: #60A5FA;
}
.mega-cats a span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.mega-cats a i {
  font-size: 13px;
  color: #60A5FA;
  width: 16px;
  text-align: center;
}
.mega-latest {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mega-latest a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 14px;
  color: #A0AEC0;
  transition: all 0.2s;
}
.mega-latest a:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}
.mega-latest .meta {
  font-size: 12px;
  color: #64748B;
  white-space: nowrap;
}
@media (max-width: 1023px) {
  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: rgba(11,18,32,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 24px 40px rgba(0,0,0,0.3);
    gap: 4px;
    border-radius: 0 0 16px 16px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 12px 16px;
    font-size: 15px;
    border-bottom: none;
    border-left: 2px solid transparent;
    border-radius: 8px;
  }
  .nav-links a:hover,
  .nav-links a.active {
    border-left-color: #3B82F6;
  }
  .nav-links a.active {
    background: rgba(59,130,246,0.1);
  }
  .more-trigger {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .mega-panel {
    display: none;
  }
}
@media (min-width: 1024px) {
  .mega-panel {
    display: block;
  }
}

.page-hero {
  position: relative;
  padding: 136px 0 72px;
  background-image: linear-gradient(135deg, rgba(11,18,32,0.92), rgba(15,30,58,0.84)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center 18%;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  width: 380px;
  height: 380px;
  background: rgba(34,211,238,0.08);
  border-radius: 50%;
  filter: blur(110px);
  top: -100px;
  right: -80px;
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  width: 280px;
  height: 280px;
  background: rgba(59,130,246,0.12);
  border-radius: 50%;
  filter: blur(100px);
  bottom: -80px;
  left: 22%;
  pointer-events: none;
}
.hero-top {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 28px;
}
.live-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.22);
  color: #67E8F9;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  white-space: nowrap;
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22D3EE;
  display: inline-block;
  box-shadow: 0 0 8px #22D3EE;
  animation: livePulse 1.6s infinite;
}
@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #718096;
  flex-wrap: wrap;
}
.hero-breadcrumb a {
  color: #94A3B8;
  transition: color 0.2s;
}
.hero-breadcrumb a:hover {
  color: #60A5FA;
}
.hero-breadcrumb i {
  font-size: 10px;
  color: #4A5568;
}
.hero-breadcrumb span {
  color: #60A5FA;
  font-weight: 500;
}
.page-title {
  position: relative;
  z-index: 1;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 900;
  color: #EDF2F7;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.page-subtitle {
  position: relative;
  z-index: 1;
  font-size: 17px;
  line-height: 1.75;
  color: #A0AEC0;
  max-width: 580px;
  margin-bottom: 28px;
}
.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cat-card-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.cat-card {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.cat-card:hover {
  border-color: rgba(255,255,255,0.16);
  transform: translateY(-4px);
  box-shadow: 0 24px 48px rgba(0,0,0,0.25);
}
.cat-card-media {
  min-height: 260px;
  background: #0F1E3A;
  overflow: hidden;
}
.cat-card-img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  max-height: 340px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.cat-card:hover .cat-card-img {
  transform: scale(1.025);
}
.cat-card-body {
  padding: 36px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}
.cat-card-body .badge {
  margin-bottom: 12px;
}
.cat-card-title {
  font-size: 22px;
  font-weight: 800;
  color: #EDF2F7;
  margin-bottom: 12px;
  line-height: 1.4;
}
.cat-card-title a {
  color: inherit;
  transition: color 0.2s;
}
.cat-card-title a:hover {
  color: #60A5FA;
}
.cat-card-text {
  font-size: 15px;
  line-height: 1.75;
  color: #A0AEC0;
  margin-bottom: 20px;
}
.cat-card-reverse .cat-card-media {
  order: 2;
}
@media (max-width: 820px) {
  .cat-card {
    grid-template-columns: 1fr;
  }
  .cat-card-reverse .cat-card-media {
    order: 0;
  }
  .cat-card-media,
  .cat-card-img {
    min-height: 200px;
    max-height: 260px;
  }
  .cat-card-body {
    padding: 24px;
  }
  .cat-card-title {
    font-size: 19px;
  }
}
.pagination-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  margin-top: 44px;
}
.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.03);
  color: #64748B;
  font-size: 13px;
  cursor: not-allowed;
}
.page-current {
  font-size: 14px;
  font-weight: 600;
  color: #EDF2F7;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.adv-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
}
.adv-card:hover {
  border-color: rgba(255,255,255,0.16);
  transform: translateY(-4px);
  background: rgba(255,255,255,0.06);
}
.adv-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #60A5FA;
  background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(34,211,238,0.1));
  border: 1px solid rgba(34,211,238,0.2);
}
.adv-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: #EDF2F7;
  margin-bottom: 8px;
}
.adv-card p {
  font-size: 14px;
  line-height: 1.7;
  color: #94A3B8;
}
@media (max-width: 1023px) {
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .adv-grid {
    grid-template-columns: 1fr;
  }
}

.timeline-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.timeline {
  position: relative;
  padding-left: 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(59,130,246,0.55), rgba(34,211,238,0.2));
}
.timeline-item {
  position: relative;
  padding-left: 52px;
  padding-bottom: 36px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: 7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #60A5FA;
  border: 2px solid #0B1220;
  box-shadow: 0 0 14px rgba(96,165,250,0.7);
}
.timeline-phase {
  display: inline-block;
  font-size: 12px;
  color: #22D3EE;
  background: rgba(34,211,238,0.1);
  border: 1px solid rgba(34,211,238,0.2);
  padding: 2px 12px;
  border-radius: 999px;
  margin-bottom: 8px;
}
.timeline-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: #EDF2F7;
  margin-bottom: 6px;
}
.timeline-item p {
  font-size: 14px;
  line-height: 1.75;
  color: #94A3B8;
  max-width: 660px;
}

.faq-list {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  margin-bottom: 12px;
  transition: all 0.3s;
  overflow: hidden;
}
.faq-item.active {
  border-color: rgba(96,165,250,0.5);
  background: rgba(255,255,255,0.05);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}
.faq-question .faq-text {
  font-weight: 600;
  color: #E2E8F0;
  font-size: 15px;
  line-height: 1.6;
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  color: #94A3B8;
  font-size: 12px;
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: #60A5FA;
  color: #60A5FA;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.active .faq-answer {
  max-height: 360px;
}
.faq-answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: #94A3B8;
}

.cta-section {
  padding: 24px 0 80px;
}
.cta-box {
  position: relative;
  background-image: linear-gradient(135deg, rgba(15,30,58,0.9), rgba(11,18,32,0.92)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  background: rgba(34,211,238,0.09);
  border-radius: 50%;
  filter: blur(90px);
  top: -110px;
  right: -90px;
  pointer-events: none;
}
.cta-box::after {
  content: '';
  position: absolute;
  width: 240px;
  height: 240px;
  background: rgba(59,130,246,0.12);
  border-radius: 50%;
  filter: blur(80px);
  bottom: -80px;
  left: 10%;
  pointer-events: none;
}
.cta-box h2 {
  position: relative;
  z-index: 1;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.cta-box .cta-desc {
  position: relative;
  z-index: 1;
  font-size: 15px;
  color: #A0AEC0;
  max-width: 580px;
  margin: 0 auto 28px;
}
.cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
@media (max-width: 640px) {
  .cta-box {
    padding: 40px 24px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
}

.site-footer {
  background: #080D18;
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 52px 0 0;
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #718096;
  max-width: 340px;
  margin-bottom: 18px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  color: #94A3B8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: all 0.2s;
}
.social-icon:hover {
  color: #60A5FA;
  border-color: rgba(96,165,250,0.4);
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col a,
.footer-col p {
  display: block;
  font-size: 14px;
  color: #718096;
  padding-bottom: 10px;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: #60A5FA;
}
.footer-col p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.footer-col p i {
  color: #64748B;
  margin-top: 3px;
  width: 16px;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 18px 0 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: #64748B;
}
.footer-bottom a {
  color: #718096;
  transition: color 0.2s;
}
.footer-bottom a:hover {
  color: #60A5FA;
}
@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    align-items: center;
    padding-top: 22px;
    padding-bottom: 24px;
  }
}
@media (max-width: 1023px) and (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 639px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.float-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 40;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3B82F6, #22D3EE);
  border: none;
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 25px rgba(59,130,246,0.5);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
}
.float-cta.show {
  opacity: 1;
  pointer-events: auto;
}
.float-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px rgba(59,130,246,0.65);
}
@media (max-width: 640px) {
  .float-cta {
    width: 48px;
    height: 48px;
    bottom: 16px;
    right: 16px;
    font-size: 15px;
  }
}

/* roulang page: category3 */
:root {
            --brand-blue: #3B82F6;
            --brand-cyan: #22D3EE;
            --brand-gold: #C9A45C;
            --bg-base: #0B1220;
            --bg-deep: #0F1E3A;
            --txt-title: #EDF2F7;
            --txt-body: #A0AEC0;
            --txt-weak: #718096;
            --txt-disable: #4A5568;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.14);
            --radius-card: 16px;
            --radius-btn: 9999px;
            --radius-small: 8px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.25);
            --shadow-float: 0 20px 50px rgba(0, 0, 0, 0.4);
            --glow-blue: 0 0 20px rgba(59, 130, 246, 0.35);
            --glow-blue-hover: 0 0 35px rgba(59, 130, 246, 0.55);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: linear-gradient(180deg, #0B1220 0%, #0F1E3A 100%);
            color: var(--txt-body);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 64px;
            background: rgba(11, 18, 32, 0.82);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-inner {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.45);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 800;
            color: #EDF2F7;
            letter-spacing: 0.5px;
            line-height: 1.2;
            white-space: nowrap;
            display: flex;
            align-items: baseline;
            gap: 4px;
        }
        .logo-sub {
            font-size: 12px;
            font-weight: 400;
            color: #718096;
            letter-spacing: 0.5px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: auto;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: #94A3B8;
            transition: color 0.25s;
            position: relative;
            padding: 6px 2px;
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #3B82F6, #22D3EE);
        }
        .nav-links a.active {
            color: #60A5FA;
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #3B82F6, #22D3EE);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .more-trigger {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #CBD5E1;
            font-size: 13px;
            font-weight: 500;
            padding: 7px 16px;
            border-radius: 9999px;
            transition: all 0.3s;
        }
        .more-trigger:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #CBD5E1;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: all 0.3s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .mega-panel {
            position: absolute;
            top: 64px;
            right: 16px;
            width: 340px;
            background: rgba(15, 30, 58, 0.95);
            -webkit-backdrop-filter: blur(24px);
            backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 20px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s;
            z-index: 99;
        }
        .mega-panel.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mega-panel h4 {
            font-size: 12px;
            font-weight: 600;
            color: #718096;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            padding-bottom: 6px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mega-cats {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .mega-cats a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 10px;
            border-radius: 8px;
            font-size: 14px;
            color: #CBD5E1;
            transition: background 0.2s;
        }
        .mega-cats a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #60A5FA;
        }
        .mega-cats a span i {
            width: 20px;
            margin-right: 8px;
            color: #3B82F6;
            font-size: 13px;
        }
        .mega-latest {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .mega-latest a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 10px;
            border-radius: 8px;
            font-size: 13px;
            color: #94A3B8;
            transition: background 0.2s;
        }
        .mega-latest a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #60A5FA;
        }
        .mega-latest .meta {
            font-size: 11px;
            color: #475569;
            white-space: nowrap;
        }
        .mobile-menu {
            display: none;
        }
        .page-banner {
            padding-top: 140px;
            padding-bottom: 70px;
            background: linear-gradient(180deg, #0B1220 0%, #0F1E3A 80%, rgba(15, 30, 58, 0.4) 100%);
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.14;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .page-banner h1 {
            font-size: clamp(28px, 5vw, 42px);
            font-weight: 900;
            color: #EDF2F7;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }
        .page-banner h1 span {
            color: #60A5FA;
        }
        .page-banner p {
            color: #94A3B8;
            font-size: 15px;
            max-width: 480px;
            margin-top: 8px;
            line-height: 1.8;
        }
        .breadcrumb {
            font-size: 13px;
            color: #64748B;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #64748B;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #60A5FA;
        }
        .breadcrumb .divider {
            color: #475569;
            font-size: 11px;
        }
        .breadcrumb .current {
            color: #94A3B8;
        }
        .section-block {
            padding: 80px 0;
            position: relative;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            color: #EDF2F7;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-subtitle {
            color: #64748B;
            font-size: 15px;
            max-width: 600px;
            line-height: 1.8;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #60A5FA;
            font-size: 14px;
            font-weight: 500;
            transition: gap 0.3s;
            white-space: nowrap;
        }
        .section-link:hover {
            gap: 10px;
            color: #93C5FD;
        }
        .news-list-panel {
            background: rgba(255, 255, 255, 0.04);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 10px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .news-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 16px;
            border-radius: 12px;
            transition: background 0.3s;
            cursor: pointer;
        }
        .news-list-item:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .news-list-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            object-fit: cover;
            background: #1E293B;
            flex-shrink: 0;
            border: 1px solid rgba(255, 255, 255, 0.04);
        }
        .news-list-content {
            flex: 1;
            min-width: 0;
        }
        .news-list-content .title {
            font-size: 16px;
            font-weight: 600;
            color: #E2E8F0;
            transition: color 0.2s;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            display: block;
        }
        .news-list-item:hover .title {
            color: #60A5FA;
        }
        .news-list-content .summary {
            font-size: 14px;
            color: #64748B;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: 4px;
        }
        .news-list-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 6px;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            background: rgba(59, 130, 246, 0.1);
            color: #60A5FA;
            border: 1px solid rgba(59, 130, 246, 0.2);
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 9999px;
        }
        .news-list-date {
            font-size: 12px;
            color: #475569;
        }
        .news-list-action {
            font-size: 13px;
            color: #60A5FA;
            font-weight: 500;
            white-space: nowrap;
            transition: color 0.2s;
        }
        .news-list-action:hover {
            color: #93C5FD;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 28px 24px;
            transition: all 0.35s;
            position: relative;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.14);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(34, 211, 238, 0.15));
            color: #60A5FA;
            border: 1px solid rgba(59, 130, 246, 0.2);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
        }
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .case-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s;
        }
        .case-card:hover {
            border-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }
        .case-img {
            height: 180px;
            width: 100%;
            object-fit: cover;
            background: #1E293B;
        }
        .case-body {
            padding: 20px 22px;
        }
        .case-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 8px;
        }
        .case-body p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }
        .flow-item {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            position: relative;
            transition: all 0.3s;
        }
        .flow-item:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.12);
        }
        .flow-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 0 14px rgba(59, 130, 246, 0.4);
        }
        .flow-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 6px;
        }
        .flow-item p {
            font-size: 13px;
            color: #718096;
            line-height: 1.6;
        }
        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .faq-item.active {
            border-color: rgba(59, 130, 246, 0.3);
            background: rgba(255, 255, 255, 0.05);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
        }
        .faq-question span {
            font-size: 15px;
            font-weight: 600;
            color: #E2E8F0;
        }
        .faq-question .icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #94A3B8;
            transition: all 0.3s;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .icon {
            transform: rotate(45deg);
            background: rgba(59, 130, 246, 0.15);
            border-color: #3B82F6;
            color: #60A5FA;
        }
        .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s;
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            padding: 0 22px 22px;
            max-height: 400px;
        }
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #0B1220 0%, #152A52 100%);
            position: relative;
            border-radius: 24px;
            margin: 0 16px;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
        }
        .cta-section h2 {
            font-size: clamp(24px, 4vw, 36px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: #94A3B8;
            font-size: 15px;
            max-width: 540px;
            margin: 0 auto 32px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 9999px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 36px;
            border: none;
            transition: all 0.3s;
            line-height: 1.4;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            color: #fff;
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(59, 130, 246, 0.55);
            transform: translateY(-2px);
            filter: brightness(1.1);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #E2E8F0;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-ghost:active {
            transform: scale(0.98);
        }
        .site-footer {
            background: #080D18;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 56px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 40px;
        }
        .footer-brand .footer-desc {
            margin-top: 14px;
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 18px;
        }
        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #718096;
            transition: all 0.3s;
        }
        .social-icon:hover {
            border-color: rgba(59, 130, 246, 0.4);
            color: #60A5FA;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: #E2E8F0;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: #718096;
            padding: 5px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: #60A5FA;
        }
        .footer-contact p {
            font-size: 14px;
            color: #718096;
            padding: 4px 0;
        }
        .footer-contact i {
            width: 18px;
            margin-right: 6px;
            color: #475569;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #475569;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: #64748B;
            transition: color 0.2s;
        }
        .footer-bottom a:hover {
            color: #60A5FA;
        }
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 18, 32, 0.96);
                -webkit-backdrop-filter: blur(20px);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                padding: 16px;
                z-index: 99;
            }
            .mobile-menu.open {
                display: block;
            }
            .mobile-menu a {
                display: block;
                padding: 12px 14px;
                font-size: 15px;
                font-weight: 500;
                color: #CBD5E1;
                border-radius: 10px;
                transition: background 0.2s;
            }
            .mobile-menu a:hover {
                background: rgba(255, 255, 255, 0.06);
            }
            .mobile-menu a.active {
                color: #60A5FA;
                background: rgba(59, 130, 246, 0.1);
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .page-banner {
                padding-top: 110px;
                padding-bottom: 50px;
            }
            .section-block {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 28px;
            }
            .news-list-item {
                flex-direction: row;
                gap: 14px;
                padding: 12px;
            }
            .news-list-thumb {
                width: 80px;
                height: 56px;
            }
            .news-list-content .title {
                font-size: 14px;
            }
            .news-list-content .summary {
                font-size: 12px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .news-list-action {
                display: none;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .btn {
                width: 100%;
                margin-bottom: 10px;
            }
            .page-banner .container {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
  --bg-base: #0B1220;
  --bg-deep: #0F1E3A;
  --brand-blue: #3B82F6;
  --brand-blue-light: #60A5FA;
  --brand-cyan: #22D3EE;
  --brand-gold: #C9A45C;
  --text-heading: #EDF2F7;
  --text-body: #A0AEC0;
  --text-muted: #718096;
  --border-light: rgba(255,255,255,0.08);
  --radius-lg: 16px;
  --radius-full: 999px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: linear-gradient(180deg, #0B1220 0%, #0F1E3A 100%);
  color: var(--text-body);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { text-decoration: none; }
button { border: none; background: none; font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .container { padding: 0 32px; } }
@media (min-width: 1024px) { .container { padding: 0 64px; } }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: 64px;
  background: rgba(11,18,32,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; position: relative; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 12px;
  background: linear-gradient(135deg, #3B82F6, #22D3EE);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 900; font-size: 15px;
  box-shadow: 0 0 16px rgba(59,130,246,0.4);
}
.logo-text { font-weight: 800; font-size: 18px; color: #EDF2F7; letter-spacing: -0.02em; }
.logo-sub { font-size: 12px; color: #94A3B8; font-weight: 500; margin-left: 6px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  display: inline-flex; align-items: center; padding: 8px 14px;
  border-radius: 10px; font-size: 14px; font-weight: 500;
  color: #CBD5E1; transition: all 0.25s ease; position: relative;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.04); }
.nav-links a.active { color: #60A5FA; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: -2px;
  height: 2px; background: linear-gradient(90deg, #3B82F6, #22D3EE); border-radius: 2px;
}
.nav-actions { display: flex; align-items: center; gap: 10px; }
.more-trigger {
  display: inline-flex; align-items: center; padding: 9px 18px;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1);
  color: #E2E8F0; font-size: 13px; font-weight: 500; border-radius: 999px;
  cursor: pointer; transition: all 0.3s ease;
}
.more-trigger:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.18); color: #fff; }
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1);
  color: #E2E8F0; font-size: 18px; cursor: pointer;
  align-items: center; justify-content: center; transition: all 0.3s;
}
.nav-toggle:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.2); }
.mega-panel {
  position: absolute; top: calc(100% + 12px); right: 0; width: 360px;
  background: rgba(15,30,58,0.95); backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; padding: 20px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all 0.3s ease; box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.mega-panel.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-panel h4 { font-size: 13px; font-weight: 700; color: #94A3B8; letter-spacing: 0.08em; margin-bottom: 12px; }
.mega-cats a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px; border-radius: 10px; color: #E2E8F0;
  font-size: 14px; transition: all 0.2s;
}
.mega-cats a:hover { background: rgba(255,255,255,0.05); color: #60A5FA; }
.mega-cats a span { display: inline-flex; align-items: center; gap: 10px; }
.mega-cats i { width: 16px; text-align: center; color: #64748B; }
.mega-latest a {
  display: block; padding: 9px 12px; border-radius: 10px; color: #E2E8F0;
  font-size: 13px; transition: all 0.2s;
}
.mega-latest a:hover { background: rgba(255,255,255,0.05); color: #60A5FA; }
.mega-latest .meta { display: block; font-size: 11px; color: #64748B; margin-top: 2px; }
.mobile-menu {
  display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0;
  background: rgba(11,18,32,0.97); backdrop-filter: blur(20px);
  padding: 24px; flex-direction: column; gap: 6px; z-index: 45;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all 0.3s ease; pointer-events: none;
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.mobile-menu a {
  padding: 14px 16px; border-radius: 14px; color: #E2E8F0;
  font-size: 16px; font-weight: 500; border: 1px solid transparent;
}
.mobile-menu a:hover { background: rgba(255,255,255,0.04); color: #fff; }
.mobile-menu a.active { color: #60A5FA; background: rgba(59,130,246,0.08); border-color: rgba(59,130,246,0.2); }
@media (max-width: 767px) {
  .nav-links { display: none; }
  .more-trigger { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-menu { display: flex; }
}

/* Hero */
.cat-hero {
  position: relative; padding: 160px 0 80px;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover; background-position: center;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.cat-hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 20% 40%, rgba(21,42,82,0.85), rgba(11,18,32,0.92) 70%);
}
.cat-hero::after {
  content: ""; position: absolute; top: -80px; right: -80px;
  width: 360px; height: 360px; border-radius: 999px;
  background: rgba(34,211,238,0.15); filter: blur(120px);
}
.cat-hero-inner {
  position: relative; z-index: 1;
  display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap;
}
.cat-hero-left { flex: 1; min-width: 280px; }
.hero-brand-chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px;
  border-radius: 999px; background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.25); color: #93C5FD;
  font-size: 13px; font-weight: 600; letter-spacing: 0.04em; margin-bottom: 24px;
}
.cat-hero h1 {
  font-size: 48px; font-weight: 900; color: #EDF2F7;
  line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 16px;
}
.cat-hero-left > p { font-size: 17px; color: #A0AEC0; max-width: 520px; line-height: 1.8; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; font-size: 15px; font-weight: 600;
  text-decoration: none; transition: all 0.3s ease; border: 1px solid transparent;
}
.btn-primary { background: linear-gradient(135deg, #3B82F6, #2563EB); color: #fff; box-shadow: 0 0 20px rgba(59,130,246,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 35px rgba(59,130,246,0.55); }
.btn-primary:active, .btn-ghost:active { transform: scale(0.98); }
.btn-ghost { background: rgba(255,255,255,0.03); border-color: rgba(255,255,255,0.2); color: #E2E8F0; }
.btn-ghost:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.32); color: #fff; }
.cat-crumb {
  display: flex; align-items: center; gap: 10px; font-size: 13px; color: #718096;
  padding: 10px 18px; background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08); border-radius: 999px;
  flex-shrink: 0;
}
.cat-crumb a { color: #94A3B8; transition: color 0.2s; }
.cat-crumb a:hover { color: #60A5FA; }
.cat-crumb i { font-size: 11px; color: #475569; }
.cat-crumb span { color: #60A5FA; font-weight: 500; }
@media (max-width: 767px) {
  .cat-hero { padding: 130px 0 56px; }
  .cat-hero h1 { font-size: 40px; }
  .cat-crumb { margin-top: 16px; }
}

/* Section */
.section { padding: 80px 0; }
.section-alt { background: rgba(255,255,255,0.02); border-top: 1px solid rgba(255,255,255,0.05); border-bottom: 1px solid rgba(255,255,255,0.05); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-head h2 { font-size: 32px; font-weight: 800; color: #EDF2F7; margin: 10px 0 12px; letter-spacing: -0.02em; }
.section-head p { color: #94A3B8; font-size: 15px; line-height: 1.7; }
.section-tag {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.25);
  color: #60A5FA; font-size: 12px; font-weight: 600; letter-spacing: 0.06em;
}
@media (max-width: 767px) {
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
}

/* Product Card */
.product-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .product-grid { grid-template-columns: repeat(3, 1fr); } }
.product-card {
  display: flex; gap: 16px; padding: 20px; border-radius: 16px;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(20px); transition: all 0.3s ease;
}
.product-card:hover {
  background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.16);
  transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.25);
}
.product-card img {
  width: 128px; height: 96px; object-fit: cover; border-radius: 12px; flex-shrink: 0;
}
.product-info { flex: 1; display: flex; flex-direction: column; }
.product-info h3 { font-size: 17px; font-weight: 700; color: #EDF2F7; margin: 10px 0 6px; }
.product-info p { font-size: 13px; color: #94A3B8; line-height: 1.7; margin-bottom: 10px; flex: 1; }
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11px;
  background: rgba(34,211,238,0.1); color: #67E8F9; border: 1px solid rgba(34,211,238,0.2);
  align-self: flex-start;
}
.text-link { color: #60A5FA; font-size: 13px; font-weight: 500; display: inline-flex; align-items: center; gap: 6px; transition: gap 0.2s, color 0.2s; }
.text-link:hover { gap: 12px; color: #93C5FD; }
@media (max-width: 520px) {
  .product-card { flex-direction: column; }
  .product-card img { width: 100%; height: 140px; }
}

/* Feature */
.feature-row { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 768px) { .feature-row { grid-template-columns: repeat(3, 1fr); gap: 30px; } }
.feature-card {
  padding: 32px 24px; border-radius: 20px;
  background: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease; position: relative; overflow: hidden;
}
.feature-card:nth-child(2) { transform: translateY(-20px); }
.feature-card:nth-child(2):hover { transform: translateY(-24px); }
.feature-card:hover {
  border-color: rgba(59,130,246,0.4); box-shadow: 0 16px 40px rgba(0,0,0,0.2);
}
@media (max-width: 767px) {
  .feature-card:nth-child(2),
  .feature-card:nth-child(2):hover { transform: none; }
}
.feature-icon {
  width: 54px; height: 54px; border-radius: 16px;
  background: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(34,211,238,0.12));
  border: 1px solid rgba(59,130,246,0.2); color: #60A5FA;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  margin-bottom: 20px;
}
.feature-card h3 { font-size: 18px; font-weight: 700; color: #EDF2F7; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: #94A3B8; line-height: 1.75; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 768px) { .steps-grid { grid-template-columns: repeat(4, 1fr); } }
.step-item { text-align: center; padding: 28px 20px; position: relative; }
.step-num {
  width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 999px;
  background: linear-gradient(135deg, #3B82F6, #2563EB); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; box-shadow: 0 0 20px rgba(59,130,246,0.35);
}
.step-item h3 { font-size: 16px; font-weight: 700; color: #EDF2F7; margin-bottom: 8px; }
.step-item p { font-size: 13px; color: #94A3B8; line-height: 1.7; }
.step-item:not(:last-child)::after {
  content: ""; position: absolute; top: 28px; right: -14px; width: 28px; height: 2px;
  background: linear-gradient(90deg, rgba(59,130,246,0.5), rgba(34,211,238,0.1));
}
@media (max-width: 767px) {
  .step-item:not(:last-child)::after { display: none; }
}

/* Scene */
.scene-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 768px) { .scene-grid { grid-template-columns: repeat(3, 1fr); } }
.scene-card {
  display: flex; flex-direction: column; border-radius: 20px; overflow: hidden;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease;
}
.scene-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.16); box-shadow: 0 16px 40px rgba(0,0,0,0.2); }
.scene-card img { height: 160px; object-fit: cover; width: 100%; }
.scene-body { padding: 24px; }
.scene-body h3 { font-size: 17px; font-weight: 700; color: #EDF2F7; margin-bottom: 8px; }
.scene-body p { font-size: 14px; color: #94A3B8; line-height: 1.75; }

/* Proof */
.proof-wrap {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px; padding: 40px 32px;
}
.stats-row { display: grid; grid-template-columns: 1fr; gap: 28px; text-align: center; margin-bottom: 40px; }
@media (min-width: 768px) { .stats-row { grid-template-columns: repeat(3, 1fr); } }
.stat-num { font-size: 46px; font-weight: 900; color: #C9A45C; line-height: 1; }
.stat-label { font-size: 14px; color: #94A3B8; margin-top: 10px; }
.testimonial-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .testimonial-grid { grid-template-columns: repeat(2, 1fr); } }
.testimonial {
  padding: 24px; border-radius: 16px; background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08); transition: border-color 0.3s;
}
.testimonial:hover { border-color: rgba(255,255,255,0.16); }
.testimonial > p { font-size: 15px; color: #CBD5E1; line-height: 1.8; margin-bottom: 16px; }
.testi-author { display: flex; align-items: center; gap: 12px; }
.testi-avatar {
  width: 42px; height: 42px; border-radius: 999px;
  background: linear-gradient(135deg, #3B82F6, #22D3EE);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 700;
}
.testi-name { font-size: 14px; color: #E2E8F0; font-weight: 600; }
.testi-role { font-size: 12px; color: #64748B; }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  margin-bottom: 12px; border-radius: 16px;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden; transition: all 0.3s;
}
.faq-item.open { border-color: rgba(59,130,246,0.4); background: rgba(255,255,255,0.05); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; cursor: pointer; font-size: 15px; font-weight: 600; color: #EDF2F7;
}
.faq-q:focus { outline: 2px solid rgba(59,130,246,0.5); outline-offset: -2px; }
.faq-icon {
  width: 28px; height: 28px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: #A0AEC0; transition: transform 0.3s, border-color 0.3s; flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); border-color: #60A5FA; color: #60A5FA; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 24px; }
.faq-a p { padding: 4px 0 24px; font-size: 14px; color: #94A3B8; line-height: 1.8; }

/* CTA */
.cta-section {
  position: relative; padding: 80px 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center;
}
.cta-section::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,30,58,0.9), rgba(11,18,32,0.95));
}
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { font-size: 36px; font-weight: 900; color: #EDF2F7; margin-bottom: 16px; letter-spacing: -0.02em; }
.cta-inner p { color: #A0AEC0; margin-bottom: 32px; font-size: 16px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
@media (max-width: 520px) {
  .cta-inner h2 { font-size: 28px; }
  .cta-actions .btn-primary, .cta-actions .btn-ghost { width: 100%; justify-content: center; }
}

/* Footer */
.site-footer { background: #080D18; border-top: 1px solid rgba(255,255,255,0.06); padding: 56px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.4fr; } }
.footer-brand p { margin-top: 16px; font-size: 14px; color: #94A3B8; line-height: 1.7; max-width: 280px; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.social-icon {
  width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: #94A3B8; transition: all 0.3s;
}
.social-icon:hover { border-color: #3B82F6; color: #60A5FA; transform: translateY(-3px); }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #EDF2F7; margin-bottom: 18px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14px; color: #94A3B8; transition: color 0.2s; }
.footer-col a:hover { color: #60A5FA; }
.footer-contact p { margin: 8px 0; font-size: 14px; color: #94A3B8; }
.footer-contact i { width: 22px; color: #60A5FA; font-style: normal; }
.footer-bottom {
  margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.06);
  display: flex; flex-direction: column; gap: 10px;
  justify-content: space-between; align-items: center; font-size: 13px; color: #64748B;
}
@media (min-width: 768px) { .footer-bottom { flex-direction: row; } }
.footer-bottom a { color: #94A3B8; transition: color 0.2s; }
.footer-bottom a:hover { color: #60A5FA; }

/* Float CTA */
.float-cta {
  position: fixed; bottom: 24px; right: 24px; z-index: 40;
  width: 56px; height: 56px; border-radius: 999px;
  background: linear-gradient(135deg, #3B82F6, #2563EB); color: #fff; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 25px rgba(59,130,246,0.5); border: none; cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all 0.3s ease;
}
.float-cta.show { opacity: 1; visibility: visible; transform: translateY(0); }
.float-cta:hover { transform: translateY(-3px); box-shadow: 0 0 35px rgba(59,130,246,0.65); }
@media (max-width: 767px) {
  .float-cta { width: 48px; height: 48px; right: 16px; bottom: 16px; font-size: 16px; }
}