/* roulang page: index */
:root {
  --bg-deep: #070D15;
  --bg-body: #0B111B;
  --bg-card: #101926;
  --bg-panel: #0E1622;
  --text-main: #EDF2F7;
  --text-secondary: #9FAEBD;
  --text-muted: #5F6D7E;
  --accent-gold: #E3B367;
  --accent-gold-hover: #F3CC91;
  --accent-cyan: #25D6C3;
  --border-line: rgba(158, 190, 220, 0.14);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 0 rgba(255,255,255,0.03) inset, 0 20px 40px -24px rgba(0,0,0,0.9);
  --shadow-hover: 0 0 0 1px rgba(227,179,103,0.06), 0 30px 60px -24px rgba(0,0,0,0.6);
  --transition-base: all 0.3s cubic-bezier(.2,.8,.2,1);
  --font-en: "Inter", "DIN Alternate", "Barlow", sans-serif;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-body);
  color:var(--text-secondary);
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent-cyan);text-decoration:none;transition:var(--transition-base)}
a:hover{color:var(--accent-gold)}
button{font-family:inherit}
.container-xxl{max-width:1320px}
.section-pad{padding:clamp(70px,9vw,120px) 0}
.text-gold{color:var(--accent-gold)}
.text-cyan{color:var(--accent-cyan)}
.text-main{color:var(--text-main)}
.font-en{font-family:var(--font-en);font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:0.8125rem;letter-spacing:0.12em;text-transform:uppercase;
  color:var(--accent-cyan);font-weight:500;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--accent-cyan);opacity:0.7}
.section-title{font-size:clamp(1.5rem,3vw,2.4rem);font-weight:700;color:var(--text-main);line-height:1.3;letter-spacing:-0.02em}
.section-sub{color:var(--text-secondary);font-size:1.02rem;max-width:720px}
.divider-gradient{
  height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.12),transparent);
  border:none;margin:0;
}
.btn-highlight{
  background:var(--accent-gold);color:#101010;font-weight:700;
  border:none;border-radius:var(--radius-pill);
  padding:14px 36px;font-size:1rem;line-height:1.4;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  transition:var(--transition-base);letter-spacing:0.02em;
}
.btn-highlight:hover{
  background:var(--accent-gold-hover);
  box-shadow:0 0 0 4px rgba(227,179,103,0.12),0 10px 28px -8px rgba(227,179,103,0.35);
  color:#101010;transform:translateY(-1px);
}
.btn-outline-gold{
  background:transparent;color:var(--accent-gold);
  border:1px solid rgba(227,179,103,0.38);border-radius:var(--radius-pill);
  padding:13px 34px;font-weight:600;font-size:1rem;
  display:inline-flex;align-items:center;gap:10px;transition:var(--transition-base);
}
.btn-outline-gold:hover{
  background:rgba(227,179,103,0.08);border-color:var(--accent-gold);
  color:var(--accent-gold);transform:translateY(-1px);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--text-main);
  font-size:0.95rem;font-weight:600;transition:var(--transition-base);
}
.link-arrow i{transition:transform 0.25s ease}
.link-arrow:hover{color:var(--accent-gold)}
.link-arrow:hover i{transform:translateX(4px)}
.badge-tag{
  display:inline-flex;align-items:center;font-size:0.8rem;line-height:1;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(37,214,195,0.08);border:1px solid rgba(37,214,195,0.32);color:var(--accent-cyan);
  font-weight:500;white-space:nowrap;
}
/* Header */
.site-topbar{
  background:#050A11;border-bottom:1px solid var(--border-line);
  font-size:0.75rem;color:var(--text-muted);
  padding:8px 0;letter-spacing:0.02em;
}
.site-topbar .topbar-right{display:flex;align-items:center;gap:18px}
.navbar-main{
  background:rgba(7,13,21,0.86);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--border-line);
  min-height:72px;
  padding:0;
  position:sticky;top:0;z-index:1080;
}
.navbar-main::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent 18%,rgba(227,179,103,0.28) 38%,rgba(227,179,103,0.5) 50%,rgba(227,179,103,0.28) 62%,transparent 82%);
  pointer-events:none;
}
.navbar-main .navbar-brand{
  display:flex;align-items:center;gap:12px;padding:0;color:var(--text-main);
}
.navbar-main .brand-logo{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,rgba(227,179,103,0.16),rgba(227,179,103,0.04));
  border:1px solid rgba(227,179,103,0.3);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-gold);font-size:1rem;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-primary{font-weight:800;color:var(--text-main);letter-spacing:-0.02em;font-size:1.28rem}
.brand-primary strong{font-weight:800;color:var(--accent-gold)}
.brand-sub{font-size:0.7rem;color:var(--text-muted);letter-spacing:0.16em}
.navbar-main .navbar-nav{margin-left:auto;margin-right:14px;gap:2px}
.navbar-main .nav-link{
  color:var(--text-secondary);font-size:0.97rem;font-weight:500;
  padding:24px 15px;position:relative;transition:var(--transition-base);
  display:flex;align-items:center;
}
.navbar-main .nav-link i{font-size:0.7rem;margin-left:5px;color:var(--text-muted)}
.navbar-main .nav-link:hover{color:var(--text-main)}
.navbar-main .nav-link.active{
  color:var(--text-main);
}
.navbar-main .nav-link.active::after{
  content:"";position:absolute;bottom:9px;left:50%;transform:translateX(-50%);
  width:22px;height:2px;background:var(--accent-gold);border-radius:4px;
  box-shadow:0 0 10px rgba(227,179,103,0.55);
}
.navbar-main .nav-link.active::before{
  content:"";position:absolute;bottom:4px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent-cyan);
  box-shadow:0 0 8px rgba(37,214,195,0.7);
}
.navbar-main .nav-cta{margin-left:8px}
.navbar-main .nav-cta .btn-highlight{padding:11px 26px;font-size:0.92rem}
.navbar-toggler{
  border:1px solid var(--border-line);border-radius:10px;padding:8px 10px;
  background:rgba(255,255,255,0.02);color:var(--text-main);
  font-size:1.1rem;
}
.navbar-toggler:focus{box-shadow:none;border-color:var(--accent-gold)}
@media(max-width:991.98px){
  .navbar-main{min-height:64px}
  .navbar-main .navbar-collapse{
    background:rgba(7,13,21,0.97);border-top:1px solid var(--border-line);
    margin-top:10px;padding:14px 0 22px;
  }
  .navbar-main .navbar-nav{margin:0}
  .navbar-main .nav-link{padding:14px 18px;border-radius:10px}
  .navbar-main .nav-link.active{background:rgba(227,179,103,0.06)}
  .navbar-main .nav-link.active::before,
  .navbar-main .nav-link.active::after{left:18px;transform:none;bottom:12px;width:20px;height:3px;border-radius:0 4px 4px 0}
  .navbar-main .nav-link.active::before{left:8px;width:3px;height:3px;border-radius:50%}
  .navbar-main .nav-cta{margin:14px 18px 0}
  .navbar-main .nav-cta .btn-highlight{width:100%}
}
/* Hero */
.hero-section{
  position:relative;min-height:86vh;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  background-color:var(--bg-deep);
  display:flex;align-items:center;
  overflow:hidden;
}
.hero-section::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(7,13,21,0.96) 10%,rgba(7,13,21,0.72) 46%,rgba(7,13,21,0.34) 80%);
}
.hero-section::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.018) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(90deg,#000,transparent 70%);
}
.hero-section .container{position:relative;z-index:3;padding-top:80px;padding-bottom:70px}
.hero-copy{max-width:720px}
.hero-tagline{
  display:inline-flex;align-items:center;gap:8px;
  font-size:0.85rem;color:var(--accent-cyan);background:rgba(37,214,195,0.06);
  border:1px solid rgba(37,214,195,0.2);border-radius:var(--radius-pill);
  padding:6px 16px;margin-bottom:28px;
}
.hero-tagline::before{content:"";width:16px;height:1px;background:var(--accent-cyan)}
.hero-title{
  font-size:clamp(2.6rem,6vw,4.8rem);font-weight:800;color:var(--text-main);
  line-height:1.12;letter-spacing:-0.035em;margin-bottom:22px;
}
.hero-title .accent{color:var(--accent-gold);position:relative;white-space:nowrap;display:inline-block}
.hero-title .line-tag{display:block}
.hero-desc{
  font-size:1.12rem;color:var(--text-secondary);line-height:1.9;
  max-width:580px;margin-bottom:38px;
}
.hero-desc strong{color:var(--text-main);font-weight:600}
.hero-btns{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:30px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.pill-link{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--border-line);border-radius:var(--radius-pill);
  padding:9px 18px;font-size:0.88rem;color:var(--text-secondary);
  background:rgba(11,17,27,0.44);backdrop-filter:blur(4px);transition:var(--transition-base);
}
.pill-link i{color:var(--accent-gold);font-size:0.75rem}
.pill-link:hover{border-color:rgba(37,214,195,0.44);color:var(--text-main)}
.hero-visual{
  position:relative;display:flex;align-items:center;justify-content:center;
  min-height:480px;
}
.hero-visual-frame{
  position:relative;width:100%;max-width:560px;border-radius:20px;
  border:1px solid var(--border-line);overflow:hidden;
  box-shadow:0 40px 80px -30px rgba(0,0,0,0.9);
}
.hero-visual-frame img{width:100%;object-fit:cover;min-height:380px;max-height:520px}
.hero-visual-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(210deg,transparent 52%,rgba(7,13,21,0.7));border-radius:20px}
.hero-visual-frame .corner-dot{position:absolute;z-index:2;width:10px;height:10px;border-radius:50%;background:var(--accent-cyan);box-shadow:0 0 16px rgba(37,214,195,0.9)}
.hero-visual-frame .corner-dot.c1{top:18px;left:18px}
.hero-visual-frame .corner-dot.c2{bottom:18px;right:18px;background:var(--accent-gold);box-shadow:0 0 16px rgba(227,179,103,0.8)}
.float-badge{
  position:absolute;z-index:4;background:rgba(16,25,38,0.86);
  border:1px solid var(--border-line);backdrop-filter:blur(10px);
  border-radius:14px;padding:13px 18px;display:flex;align-items:center;gap:12px;
  box-shadow:0 18px 38px rgba(0,0,0,0.45);
}
.float-badge .ic{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:0.95rem}
.float-badge .txt{font-size:0.83rem;color:var(--text-secondary);line-height:1.2}
.float-badge .txt b{display:block;color:var(--text-main);font-size:1rem;letter-spacing:0.01em}
.float-badge.fb1{top:9%;left:-8%;animation:floaty 6s ease-in-out infinite}
.float-badge.fb2{bottom:11%;right:-2%;animation:floaty 7s 0.5s ease-in-out infinite}
.float-badge .ic.gold{background:rgba(227,179,103,0.1);border:1px solid rgba(227,179,103,0.25);color:var(--accent-gold)}
.float-badge .ic.cyan{background:rgba(37,214,195,0.1);border:1px solid rgba(37,214,195,0.25);color:var(--accent-cyan)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@media(max-width:1199.98px){
  .hero-visual{min-height:420px}
  .float-badge.fb1{left:0}
}
@media(max-width:991.98px){
  .hero-section{min-height:0;background-position:center right}
  .hero-section::before{background:linear-gradient(90deg,rgba(7,13,21,0.97) 8%,rgba(7,13,21,0.82) 70%,rgba(7,13,21,0.6))}
  .hero-copy{max-width:100%}
  .hero-visual{margin-top:54px;min-height:370px}
  .hero-title{font-size:clamp(2rem,8vw,3.2rem)}
  .hero-desc{font-size:1.04rem;max-width:600px}
  .float-badge.fb1{left:-4%}
}
@media(max-width:575.98px){
  .hero-section .container{padding-top:55px;padding-bottom:50px}
  .hero-title{font-size:clamp(1.65rem,8vw,2.5rem);letter-spacing:-0.02em}
  .hero-btns .btn-highlight,.hero-btns .btn-outline-gold{flex:1 0 auto;justify-content:center}
  .hero-visual{min-height:260px}
  .hero-visual-frame img{max-height:300px;min-height:240px}
  .float-badge{padding:10px 14px}
  .float-badge .txt{font-size:0.75rem;line-height:1.2}
  .float-badge .txt b{font-size:0.9rem}
  .float-badge.fb1{top:2%;left:0}
  .float-badge.fb2{bottom:6%;right:0}
  .hero-pills{gap:8px;flex-wrap:wrap}
  .pill-link{font-size:0.8rem;padding:7px 13px}
}
/* Glow divider */
.glow-divider{height:2px;background:linear-gradient(90deg,transparent,rgba(227,179,103,0.55),transparent)}
/* Stats */
.stats-band{position:relative;border-top:1px solid var(--border-line);border-bottom:1px solid var(--border-line);background:linear-gradient(180deg,rgba(16,25,38,0.35),rgba(7,13,21,0.2));padding:36px 0}
.stat-item{text-align:center;position:relative;padding:8px 12px}
.stat-item + .stat-item::before{content:"";position:absolute;left:0;top:24%;height:52%;width:1px;background:linear-gradient(180deg,transparent,rgba(158,190,220,0.12),transparent)}
.stat-number{
  font-family:var(--font-en);font-size:clamp(1.9rem,4.4vw,3.4rem);
  font-weight:700;color:var(--text-main);letter-spacing:-0.04em;line-height:1.15;
}
.stat-number .suffix{color:var(--accent-gold);font-size:0.55em;margin-left:4px;vertical-align:super;letter-spacing:0}
.stat-unit{margin-top:6px;font-size:0.9rem;color:var(--text-muted);letter-spacing:0.1em}
.stat-glow{width:20px;height:2px;background:var(--accent-gold);margin:10px auto 0;opacity:0.55;border-radius:2px}
@media(max-width:767.98px){
  .stats-band{padding:28px 0}
  .stat-item{padding:14px 6px}
  .stat-item:nth-child(3)::before{display:none}
  .stat-number{font-size:2rem}
  .stat-unit{font-size:0.8rem;letter-spacing:0.06em}
}
/* Services highlight asymmetric grid */
.services-section{position:relative;background:var(--bg-body)}
.services-section .bg-watermark{
  position:absolute;top:0;right:0;font-family:var(--font-en);
  font-size:clamp(5rem,11vw,9rem);font-weight:800;color:rgba(255,255,255,0.025);
  line-height:1;pointer-events:none;letter-spacing:-0.03em;
}
.feature-big{
  border-radius:20px;overflow:hidden;height:100%;min-height:520px;
  border:1px solid var(--border-line);position:relative;
  background:var(--bg-card);box-shadow:var(--shadow-card);transition:var(--transition-base);
}
.feature-big:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.feature-big .thumb{position:relative;height:52%;min-height:250px;overflow:hidden}
.feature-big .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.feature-big:hover .thumb img{transform:scale(1.04)}
.feature-big .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(7,13,21,0.65));}
.feature-big .category-num{
  position:absolute;top:20px;left:22px;z-index:2;font-family:var(--font-en);
  font-size:2rem;font-weight:800;color:rgba(255,255,255,0.92);text-shadow:0 4px 18px rgba(0,0,0,0.4);
}
.feature-big .category-badge{
  position:absolute;top:20px;right:20px;z-index:2;
  background:rgba(7,13,21,0.58);border:1px solid rgba(227,179,103,0.3);
  color:var(--accent-gold);border-radius:var(--radius-pill);
  padding:6px 14px;font-size:0.78rem;backdrop-filter:blur(8px);
}
.feature-big .feature-body{padding:32px 34px 36px}
.feature-big .feature-title{font-size:1.8rem;font-weight:700;color:var(--text-main);margin-bottom:14px;letter-spacing:-0.02em}
.feature-big .feature-desc{font-size:1rem;color:var(--text-secondary);line-height:1.9;margin-bottom:24px}
.feature-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px 18px}
.feature-list li{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:0.92rem}
.feature-list li i{color:var(--accent-cyan);font-size:0.8rem}
.compact-item{
  display:flex;flex-direction:column;background:var(--bg-card);
  border:1px solid var(--border-line);border-radius:20px;padding:30px 32px;
  min-height:245px;overflow:hidden;position:relative;transition:var(--transition-base);
  box-shadow:var(--shadow-card);
}
.compact-item + .compact-item{margin-top:24px}
.compact-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(227,179,103,0.22)}
.compact-num{
  font-family:var(--font-en);font-size:2.8rem;font-weight:800;
  color:rgba(158,190,220,0.08);position:absolute;right:22px;top:12px;line-height:1;
}
.compact-num small{font-size:1rem;color:var(--accent-cyan);display:block;text-align:right;margin-bottom:6px}
.compact-title{font-size:1.45rem;font-weight:700;color:var(--text-main);margin-bottom:12px}
.compact-desc{color:var(--text-secondary);line-height:1.8;margin-bottom:auto;font-size:0.96rem}
.compact-link{display:inline-flex;gap:6px;align-items:center;color:var(--accent-gold);font-size:0.9rem;font-weight:600}
.compact-link i{font-size:0.8rem;transition:transform 0.25s}
.compact-link:hover i{transform:translateX(4px)}
@media(max-width:991.98px){
  .feature-big{min-height:0;margin-bottom:24px}
  .feature-big .thumb{max-height:300px}
  .feature-big .feature-body{padding:28px}
}
@media(max-width:575.98px){
  .compact-item{padding:24px 22px}
  .feature-big .feature-body{padding:24px 22px}
  .feature-big .feature-title{font-size:1.45rem}
}
/* News / cms */
.news-section{
  background:linear-gradient(180deg,rgba(7,13,21,0.35),rgba(7,13,21,0.65)),var(--bg-deep);
  border-top:1px solid var(--border-line);border-bottom:1px solid var(--border-line);
}
.news-card{
  background:var(--bg-card);border:1px solid var(--border-line);
  border-radius:18px;overflow:hidden;display:flex;flex-direction:column;
  height:100%;transition:var(--transition-base);box-shadow:var(--shadow-card);
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(37,214,195,0.2)}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-panel)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-thumb .thumb-fallback{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--bg-card),var(--bg-deep));color:var(--text-muted);
}
.news-thumb .thumb-fallback span{font-size:2.1rem;font-weight:800;color:rgba(227,179,103,0.22);font-family:var(--font-en)}
.news-card .card-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.news-meta .news-time{font-size:0.78rem;color:var(--text-muted);font-family:var(--font-en);letter-spacing:0.04em}
.news-card .news-headline{
  font-size:1.15rem;font-weight:700;color:var(--text-main);line-height:1.5;
  margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:52px;
}
.news-card .news-desc{
  font-size:0.92rem;color:var(--text-secondary);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:20px;min-height:76px;flex:1;
}
.news-card .news-more{align-self:flex-start}
.news-empty{
  background:rgba(16,25,38,0.6);border:1px dashed rgba(158,190,220,0.25);
  border-radius:20px;padding:70px 32px;text-align:center;color:var(--text-secondary);
}
.news-empty .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(37,214,195,0.06);border:1px solid rgba(37,214,195,0.18);
  color:var(--accent-cyan);font-size:1.2rem;
}
.news-empty p{font-size:0.95rem}
/* Testimonial */
.testimonial-section{background:var(--bg-body)}
.testimonial-wrap{max-width:820px;margin:0 auto}
.quote-mark{
  font-family:var(--font-en);font-size:4rem;line-height:1;
  color:rgba(227,179,103,0.45);height:18px;display:block;
}
.testimonial-text{
  font-size:1.22rem;color:var(--text-main);line-height:2;font-weight:500;
  letter-spacing:0.01em;
}
.testimonial-author{
  display:flex;align-items:center;gap:12px;justify-content:center;margin-top:8px;
}
.testimonial-author .avatar{
  width:46px;height:46px;border-radius:50%;display:flex;align-items:center;
  justify-content:center;background:linear-gradient(130deg,rgba(227,179,103,0.16),rgba(37,214,195,0.1));
  border:1px solid var(--border-line);color:var(--accent-gold);font-weight:700;font-size:1rem;
}
.testimonial-author .author-name{display:block;font-weight:700;color:var(--text-main)}
.testimonial-author .author-role{font-size:0.82rem;color:var(--text-muted);display:block;margin-top:2px}
.carousel-indicators{
  position:static;margin-top:34px;display:flex;justify-content:center;gap:10px;
}
.carousel-indicators [data-bs-target]{
  width:44px;height:4px;background:rgba(158,190,220,0.22);border-radius:4px;
  border:0;opacity:1;transition:var(--transition-base);margin:0;
}
.carousel-indicators .active{
  width:64px;background:var(--accent-gold);box-shadow:0 0 10px rgba(227,179,103,0.4);
}
.carousel-inner{padding-bottom:6px}
@media(max-width:767.98px){
  .testimonial-wrap{max-width:100%}
  .testimonial-text{font-size:1.05rem;line-height:1.85}
  .quote-mark{font-size:3rem}
}
/* Trust band */
.trust-band{background:#070D15;border-top:1px solid var(--border-line);border-bottom:1px solid var(--border-line);padding:34px 0}
.trust-item{display:flex;align-items:center;gap:10px;justify-content:center;font-size:0.95rem;color:var(--text-secondary);padding:12px;text-align:left}
.trust-item i{font-size:20px;flex:0 0 auto}
.trust-item i.fa-shield-halved{color:var(--accent-cyan)}
.trust-item i.fa-bolt{color:var(--accent-gold)}
.trust-item i.fa-headset{color:var(--accent-cyan)}
.trust-item i.fa-lock{color:var(--accent-gold)}
.trust-item i.fa-circle-nodes{color:var(--accent-cyan)}
.trust-item i.fa-user-gear{color:var(--accent-gold)}
.trust-item span{font-weight:500}
@media(max-width:767.98px){
  .trust-band{padding:20px 0}
  .trust-item{justify-content:flex-start;font-size:0.88rem;padding:8px 6px}
}
/* CTA */
.cta-final{
  position:relative;padding:clamp(76px,9vw,130px) 0;background:var(--bg-body);
  overflow:hidden;
}
.cta-final::before{
  content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:0.16;
}
.cta-final::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 28% 50%,rgba(37,214,195,0.06),transparent 55%),
             radial-gradient(ellipse at 75% 30%,rgba(227,179,103,0.08),transparent 50%);
}
.cta-inner{position:relative;z-index:3}
.cta-final .cta-title{
  font-size:clamp(1.9rem,4.2vw,3rem);font-weight:800;color:var(--text-main);
  letter-spacing:-0.025em;line-height:1.3;
}
.cta-final .cta-title .gold{color:var(--accent-gold)}
.cta-final .cta-desc{font-size:1.06rem;color:var(--text-secondary);max-width:600px;margin-top:18px}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:34px}
.cta-side-links{display:flex;flex-direction:column;gap:12px}
.cta-side-link{
  display:flex;align-items:center;gap:12px;
  border:1px solid var(--border-line);background:rgba(16,25,38,0.72);
  border-radius:16px;padding:18px 22px;transition:var(--transition-base);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.cta-side-link:hover{border-color:rgba(227,179,103,0.3);transform:translateY(-2px)}
.cta-side-link i{width:38px;height:38px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;border-radius:10px;background:rgba(37,214,195,0.08);border:1px solid rgba(37,214,195,0.2);color:var(--accent-cyan)}
.cta-side-link .cta-link-label{display:block;font-size:0.84rem;color:var(--text-muted)}
.cta-side-link .cta-link-text{color:var(--text-main);font-weight:600;font-size:1rem}
/* FAQ */
.faq-section{background:linear-gradient(180deg,var(--bg-deep),#070D15)}
.faq-item{border:0;border-bottom:1px solid var(--border-line);background:transparent}
.faq-item:first-child{border-top:1px solid var(--border-line)}
.faq-question{
  width:100%;background:transparent;border:none;color:var(--text-main);
  font-size:1.08rem;font-weight:600;padding:22px 0;display:flex;
  justify-content:space-between;align-items:center;gap:16px;text-align:left;transition:var(--transition-base);
}
.faq-question:hover{color:var(--accent-gold)}
.faq-question .q-icon{
  width:28px;height:28px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--border-line);color:var(--accent-cyan);
  font-size:0.9rem;transition:var(--transition-base);
}
.faq-question[aria-expanded="true"] .q-icon{background:var(--accent-gold);color:#101010;border-color:var(--accent-gold);transform:rotate(45deg)}
.faq-answer{color:var(--text-secondary);font-size:0.97rem;line-height:2;padding:0 34px 24px 0}
@media(max-width:575.98px){
  .faq-question{font-size:0.98rem}
  .faq-answer{padding-right:0}
}
/* Footer */
.site-footer{background:#060A11;border-top:1px solid var(--border-line);position:relative;overflow:hidden}
.site-footer .footer-bg-word{
  position:absolute;bottom:-8px;left:0;width:100%;text-align:center;
  font-weight:800;font-size:clamp(3.4rem,9vw,7.5rem);color:rgba(255,255,255,0.025);
  pointer-events:none;letter-spacing:-0.02em;line-height:0.9;white-space:nowrap;
}
.site-footer .footer-main{padding:64px 0 40px;position:relative;z-index:2}
.footer-brand-name{
  font-size:1.5rem;font-weight:800;color:var(--text-main);letter-spacing:-0.02em;
  display:inline-flex;align-items:center;gap:10px;
}
.footer-brand-name .brand-mark{width:34px;height:34px;border-radius:9px;background:rgba(227,179,103,0.12);border:1px solid rgba(227,179,103,0.32);color:var(--accent-gold);display:flex;align-items:center;justify-content:center;font-size:1rem}
.footer-brand-desc{font-size:0.92rem;color:#8494A5;line-height:1.9;margin:20px 0 28px}
.footer-addr{font-size:0.86rem;color:var(--text-muted);display:flex;gap:10px;align-items:flex-start}
.footer-addr i{margin-top:5px;color:var(--accent-cyan);font-size:0.85rem}
.footer-title{ color:var(--text-main);font-size:1rem;font-weight:600;margin-bottom:22px;position:relative;padding-bottom:12px}
.footer-title::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--accent-gold);border-radius:2px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#8494A5;font-size:0.9rem;display:inline-flex;gap:8px;align-items:center}
.footer-links a i{font-size:0.6rem;color:var(--accent-cyan);opacity:0.6}
.footer-links a:hover{color:var(--accent-gold);gap:11px}
.footer-contact p{color:#8494A5;font-size:0.9rem;margin-bottom:12px}
.footer-contact p i{width:20px;color:var(--accent-gold);font-size:0.9rem;margin-right:8px}
.footer-service-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-service-tags .tag{
  font-size:0.78rem;border:1px solid var(--border-line);color:var(--text-muted);
  padding:4px 12px;border-radius:var(--radius-pill);
}
.footer-bottom{border-top:1px solid var(--border-line);padding:22px 0;position:relative;z-index:2}
.footer-bottom small{color:var(--text-muted);font-size:0.8rem}
.footer-legal a{color:#66788A;font-size:0.8rem;margin-left:20px;text-decoration:none;transition:var(--transition-base)}
.footer-legal a:hover{color:var(--accent-cyan)}
@media(max-width:767.98px){
  .site-footer .footer-main{padding:48px 0 24px}
}
/* focus visible */
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent-gold);
  outline-offset:3px;border-radius:4px;
}
::selection{background:rgba(227,179,103,0.2);color:var(--text-main);}

/* roulang page: article */
:root{
  --bg-deep:#070D15;
  --bg-body:#0B111B;
  --bg-card:#101926;
  --bg-soft:#131E2B;
  --text-main:#EDF2F7;
  --text-secondary:#9FAEBD;
  --text-muted:#5F6D7E;
  --text-article:#C9D3DE;
  --accent-gold:#E3B367;
  --accent-gold-hover:#F3CC91;
  --accent-cyan:#25D6C3;
  --border-line:rgba(158,190,220,0.14);
  --radius-md:12px;
  --radius-lg:16px;
  --radius-pill:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset, 0 20px 40px -24px rgba(0,0,0,.9);
  --shadow-card-hover:0 0 0 1px rgba(227,179,103,.06), 0 30px 60px -24px rgba(0,0,0,.6);
  --font-body:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-num:"Barlow","Inter","DIN Alternate",sans-serif;
}
html{
  scroll-behavior:smooth;
}
*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  background:var(--bg-body);
  color:var(--text-main);
  font-family:var(--font-body);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{
  color:var(--accent-gold);
  text-decoration:none;
  transition:color .25s ease;
}
a:hover{
  color:var(--accent-gold-hover);
}
img{max-width:100%;height:auto;border:0;}
p{margin:0 0 1rem;}
button{font:inherit;}
.container-xxl{
  max-width:1280px;
}
@media (max-width:575.98px){
  .container-xxl{
    --bs-gutter-x:1.25rem;
  }
}
.section-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  letter-spacing:.08em;
  color:var(--accent-cyan);
  font-weight:600;
  text-transform:uppercase;
}
.section-label i{
  font-size:.75rem;
}
.article-texture{
  background:
    radial-gradient(ellipse at 85% 10%,rgba(37,214,195,.07),transparent 42%),
    radial-gradient(ellipse at 10% 20%,rgba(227,179,103,.05),transparent 40%),
    var(--bg-deep);
}
/* ===== header nav ===== */
.navbar-main{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,13,21,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--border-line);
}
.navbar-main .container-xxl{
  min-height:72px;
  position:relative;
}
.navbar-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:6px 0;
}
.brand-logo{
  width:40px;
  height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:11px;
  border:1px solid rgba(227,179,103,.55);
  background:linear-gradient(145deg,rgba(227,179,103,.12),rgba(227,179,103,.02));
  color:var(--accent-gold);
  font-size:18px;
  transition:box-shadow .3s ease,transform .3s ease;
}
.navbar-brand:hover .brand-logo{
  transform:translateY(-2px);
  box-shadow:0 0 0 5px rgba(227,179,103,.1);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.brand-primary{
  font-size:1.05rem;
  font-weight:700;
  color:#fff;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-primary strong{
  color:var(--accent-gold);
  font-weight:700;
}
.brand-sub{
  margin-top:5px;
  font-size:.6rem;
  letter-spacing:.22em;
  color:var(--accent-cyan);
  font-family:var(--font-num);
}
.navbar-toggler{
  border:1px solid var(--border-line);
  border-radius:10px;
  width:46px;
  height:46px;
  background:var(--bg-card);
  color:var(--text-main);
  font-size:18px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.navbar-toggler:focus{
  box-shadow:0 0 0 4px rgba(37,214,195,.15);
}
@media (min-width:992px){
  .navbar-main .navbar-collapse{
    flex-basis:auto;
    flex-grow:1;
    justify-content:space-between;
    display:flex !important;
  }
  .navbar-main .navbar-collapse.collapse:not(.show){
    display:flex !important;
  }
  .navbar-main .navbar-nav{
    flex-direction:row;
    align-items:center;
    gap:4px;
    margin-left:28px;
    margin-right:auto;
  }
  .navbar-main .nav-item{
    position:relative;
  }
  .navbar-main .nav-link{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    color:var(--text-secondary);
    font-size:.92rem;
    font-weight:500;
    padding:12px 18px!important;
    border-radius:var(--radius-pill);
    transition:color .25s,background .25s;
    position:relative;
  }
  .navbar-main .nav-link:hover{
    color:#fff;
    background:rgba(255,255,255,.03);
  }
  .navbar-main .nav-link.active{
    color:#fff;
  }
  .navbar-main .nav-link.active::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:3px;
    transform:translateX(-50%);
    width:20px;
    height:2px;
    border-radius:2px;
    background:var(--accent-gold);
    box-shadow:0 0 8px rgba(227,179,103,.8);
  }
  .navbar-main .nav-link.active::before{
    content:"";
    position:absolute;
    left:24px;
    right:24px;
    bottom:-1px;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(227,179,103,.75),transparent);
  }
  .btn-highlight{
    margin-left:8px;
  }
}
@media (max-width:991.98px){
  .navbar-main .container-xxl{
    min-height:64px;
    flex-wrap:wrap;
  }
  .navbar-main .navbar-collapse{
    position:absolute;
    top:calc(100% + 8px);
    left:0;
    right:0;
    z-index:1040;
    background:rgba(13,21,32,.98);
    border:1px solid var(--border-line);
    border-radius:16px;
    padding:14px;
    box-shadow:0 30px 60px -24px rgba(0,0,0,.9);
  }
  .navbar-main .navbar-collapse.show{
    display:block !important;
  }
  .navbar-main .navbar-collapse.collapsing{
    position:absolute;
    top:calc(100% + 8px);
    left:0;
    right:0;
    z-index:1040;
    background:rgba(13,21,32,.98);
    border:1px solid var(--border-line);
    border-radius:16px;
    padding:14px;
  }
  .navbar-main .navbar-nav{
    flex-direction:column;
    gap:4px;
    margin:0;
    padding:0;
    width:100%;
  }
  .navbar-main .nav-item{
    width:100%;
  }
  .navbar-main .nav-link{
    display:flex;
    align-items:center;
    min-height:48px;
    padding:0 18px!important;
    border-radius:10px;
    color:var(--text-secondary);
    font-weight:500;
    position:relative;
  }
  .navbar-main .nav-link:hover{
    color:#fff;
    background:rgba(255,255,255,.03);
  }
  .navbar-main .nav-link.active{
    color:#fff;
    background:rgba(227,179,103,.07);
  }
  .navbar-main .nav-link.active::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    width:3px;
    height:22px;
    border-radius:3px;
    background:var(--accent-gold);
  }
  .navbar-main .nav-cta{
    margin-top:14px;
    padding-top:12px;
    border-top:1px solid var(--border-line);
    width:100%;
  }
  .btn-highlight{
    width:100%;
    justify-content:center;
  }
}
/* ===== buttons ===== */
.btn-highlight{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--accent-gold);
  border:none;
  color:#101820!important;
  font-weight:700;
  font-size:.9rem;
  padding:11px 24px;
  border-radius:var(--radius-pill);
  transition:all .3s cubic-bezier(.2,.8,.2,1);
  box-shadow:0 0 0 0 rgba(227,179,103,0);
}
.btn-highlight:hover{
  background:var(--accent-gold-hover);
  box-shadow:0 0 0 5px rgba(227,179,103,.18),0 12px 28px -14px rgba(227,179,103,.6);
  transform:translateY(-1px);
  color:#101820!important;
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid rgba(227,179,103,.45);
  color:var(--accent-gold);
  font-weight:600;
  font-size:.9rem;
  padding:11px 24px;
  border-radius:var(--radius-pill);
  transition:all .3s ease;
}
.btn-ghost:hover{
  border-color:var(--accent-gold);
  background:rgba(227,179,103,.08);
  color:var(--accent-gold);
  box-shadow:0 0 0 4px rgba(227,179,103,.06);
}
.btn-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--text-secondary);
  font-weight:600;
  font-size:.875rem;
  transition:color .3s,gap .3s;
}
.btn-arrow i{transition:transform .3s;}
.btn-arrow:hover{color:var(--accent-gold);gap:10px;}
.btn-arrow:hover i{transform:translateX(3px);}
/* ===== article hero ===== */
.article-hero{
  position:relative;
  background:
    linear-gradient(180deg,rgba(7,13,21,.92),rgba(7,13,21,.82) 60%,rgba(11,17,27,.98)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--border-line);
  padding:clamp(48px,7vw,92px) 0 clamp(32px,5vw,64px);
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  right:-8%;
  top:-15%;
  width:440px;
  height:440px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(37,214,195,.14),transparent 62%);
  pointer-events:none;
}
.breadcrumb-text{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--text-muted);
  margin-bottom:24px;
}
.breadcrumb-text a{
  color:var(--text-secondary);
  transition:color .25s;
}
.breadcrumb-text a:hover{
  color:var(--accent-gold);
}
.breadcrumb-text .bread-divider{
  color:rgba(255,255,255,.2);
}
.breadcrumb-text .crumb-current{
  color:var(--accent-gold);
  max-width:14em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.article-intro-icon{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(37,214,195,.08);
  border:1px solid rgba(37,214,195,.25);
  color:var(--accent-cyan);
  padding:6px 14px;
  border-radius:var(--radius-pill);
  font-size:.78rem;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.article-h1{
  font-size:clamp(1.75rem,4.2vw,2.75rem);
  font-weight:800;
  line-height:1.25;
  color:#fff;
  margin:0 0 22px;
  letter-spacing:.01em;
}
.article-meta-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.meta-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-line);
  border-radius:var(--radius-pill);
  padding:6px 14px;
  font-size:.8rem;
  color:var(--text-secondary);
}
.meta-item i{
  color:var(--accent-gold);
  font-size:.8rem;
}
/* ===== article content ===== */
.article-section{
  padding:clamp(38px,6vw,84px) 0 clamp(28px,4vw,58px);
  background:
    radial-gradient(ellipse at 90% 10%,rgba(37,214,195,.04),transparent 38%),
    var(--bg-body);
}
.article-wrap-box{
  background:rgba(255,255,255,.02);
  border:1px solid var(--border-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:clamp(24px,4vw,52px);
}
.article-content{
  font-size:1rem;
  line-height:1.9;
  color:var(--text-article);
  word-break:break-word;
}
.article-content p{
  margin:0 0 1.65rem;
}
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4{
  position:relative;
  padding-left:16px;
  margin:2.2em 0 .9em;
  color:#fff;
  line-height:1.4;
}
.article-content h1{font-size:1.7rem;}
.article-content h2{font-size:1.42rem;}
.article-content h3{font-size:1.16rem;}
.article-content h4{font-size:1.02rem;}
.article-content h2::before,
.article-content h3::before,
.article-content h4::before{
  content:"";
  position:absolute;
  left:0;
  top:.22em;
  width:3px;
  height:1.05em;
  border-radius:3px;
  background:var(--accent-gold);
  box-shadow:0 0 10px rgba(227,179,103,.45);
}
.article-content ul,
.article-content ol{
  padding-left:1.4rem;
  margin:0 0 1.6rem;
}
.article-content li{
  margin-bottom:.45rem;
}
.article-content ul li::marker{
  color:var(--accent-gold);
}
.article-content a{
  color:var(--accent-cyan);
  border-bottom:1px dotted rgba(37,214,195,.6);
}
.article-content a:hover{
  color:var(--accent-gold-hover);
  border-color:var(--accent-gold);
}
.article-content blockquote{
  border-left:3px solid var(--accent-gold);
  background:rgba(227,179,103,.05);
  padding:18px 24px;
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  margin:0 0 1.7rem;
  color:#d7e0e9;
}
.article-content img{
  border-radius:var(--radius-md);
  margin:1.5rem 0 1rem;
  box-shadow:0 24px 50px -28px rgba(0,0,0,.95);
}
.article-content img + em{
  display:block;
  text-align:center;
  font-size:.8125rem;
  color:var(--text-muted);
  margin:-.4rem 0 1.5rem;
  font-style:normal;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:0 0 1.6rem;
  font-size:.9rem;
}
.article-content th,
.article-content td{
  padding:10px 14px;
  border:1px solid var(--border-line);
  text-align:left;
}
.article-content th{
  background:rgba(37,214,195,.06);
  color:#fff;
  font-weight:600;
}
.article-content hr{
  margin:2.2rem 0;
  border:none;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(158,190,220,.25),transparent);
}
.article-content code{
  background:rgba(37,214,195,.08);
  color:var(--accent-cyan);
  border-radius:4px;
  padding:3px 7px;
  font-size:.88em;
}
.article-nav-box{
  border-top:1px solid var(--border-line);
  margin-top:2.5rem;
  padding-top:1.6rem;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
  justify-content:space-between;
}
/* ===== not found ===== */
.article-notfound-section{
  padding:clamp(60px,8vw,120px) 0;
  background:
    radial-gradient(ellipse at 50% 20%,rgba(227,179,103,.08),transparent 45%),
    var(--bg-deep);
  border-bottom:1px solid var(--border-line);
}
.notfound-box{
  max-width:640px;
  margin:0 auto;
  text-align:center;
  padding:clamp(28px,5vw,56px);
  border:1px solid var(--border-line);
  border-radius:var(--radius-lg);
  background:rgba(16,25,38,.7);
}
.notfound-box .notfound-icon{
  width:72px;
  height:72px;
  margin:0 auto 22px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid rgba(227,179,103,.3);
  background:rgba(227,179,103,.08);
  color:var(--accent-gold);
  font-size:30px;
}
.notfound-box h1{
  font-size:clamp(1.7rem,3.5vw,2.4rem);
  font-weight:800;
  color:#fff;
  margin-bottom:14px;
}
.notfound-box p{
  color:var(--text-secondary);
  font-size:.96rem;
}
/* ===== related / more content ===== */
.related-section{
  padding:clamp(40px,6vw,80px) 0;
  background:var(--bg-body);
  border-bottom:1px solid var(--border-line);
}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.related-head h2{
  margin:6px 0 0;
  font-size:clamp(1.4rem,2.6vw,2rem);
  font-weight:700;
  color:#fff;
}
.related-head p{
  margin:0;
  color:var(--text-muted);
  font-size:.875rem;
}
.more-card{
  height:100%;
  background:var(--bg-card);
  border:1px solid var(--border-line);
  border-radius:14px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s,border-color .3s;
  display:flex;
  flex-direction:column;
}
.more-card:hover{
  transform:translateY(-4px);
  border-color:rgba(227,179,103,.25);
  box-shadow:var(--shadow-card-hover);
}
.more-card-image{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/8.5;
  background:var(--bg-deep);
}
.more-card-image img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.more-card:hover .more-card-image img{
  transform:scale(1.05);
}
.more-card-image::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(7,13,21,.85));
}
.more-card-body{
  padding:20px 22px 22px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.more-card-tag{
  align-self:flex-start;
  font-size:.75rem;
  color:var(--accent-cyan);
  border:1px solid rgba(37,214,195,.35);
  padding:2px 10px;
  border-radius:var(--radius-pill);
  margin-bottom:12px;
  background:rgba(37,214,195,.05);
}
.more-card-title{
  margin:0 0 8px;
  font-size:1.06rem;
  font-weight:700;
  color:#fff;
  line-height:1.4;
}
.more-card-title a{
  color:#fff;
  transition:color .25s;
}
.more-card-title a:hover{
  color:var(--accent-gold);
}
.more-card-desc{
  font-size:.865rem;
  line-height:1.75;
  color:var(--text-secondary);
  margin-bottom:16px;
}
.more-card-more{
  margin-top:auto;
  font-size:.84rem;
}
/* ===== cta section ===== */
.cta-section{
  position:relative;
  padding:clamp(60px,9vw,110px) 0;
  background:
    linear-gradient(90deg,rgba(7,13,21,.96),rgba(7,13,21,.82)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--border-line);
  overflow:hidden;
}
.cta-section::after{
  content:"";
  position:absolute;
  left:55%;
  top:20%;
  width:260px;
  height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(227,179,103,.2),transparent 60%);
  pointer-events:none;
}
.cta-section .container-xxl{
  position:relative;
  z-index:2;
}
.cta-grid{
  display:grid;
  grid-template-columns:1.3fr .8fr;
  gap:clamp(28px,5vw,70px);
  align-items:center;
}
.cta-section h2{
  font-size:clamp(1.6rem,3.4vw,2.6rem);
  line-height:1.3;
  color:#fff;
  font-weight:800;
  margin:10px 0 18px;
}
.cta-section h2 strong{
  color:var(--accent-gold);
}
.cta-section .cta-lead{
  color:var(--text-secondary);
  max-width:560px;
  margin-bottom:26px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.cta-note{
  margin-top:22px;
  font-size:.83rem;
  color:var(--text-muted);
  display:flex;
  align-items:center;
  gap:8px;
}
.cta-note i{
  color:var(--accent-cyan);
}
@media (max-width:991.98px){
  .cta-grid{
    grid-template-columns:1fr;
  }
}
/* ===== footer ===== */
.site-footer{
  position:relative;
  background:var(--bg-deep);
  color:var(--text-secondary);
  overflow:hidden;
}
.footer-bg-word{
  position:absolute;
  left:-20px;
  bottom:-30px;
  font-size:clamp(60px,14vw,150px);
  font-weight:900;
  line-height:1;
  color:rgba(255,255,255,.025);
  white-space:nowrap;
  pointer-events:none;
  user-select:none;
  letter-spacing:.04em;
  z-index:0;
}
.footer-main{
  padding:clamp(52px,8vw,84px) 0 clamp(30px,5vw,50px);
  border-top:1px solid var(--border-line);
  position:relative;
  z-index:1;
}
.footer-brand-name{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:1.2rem;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.brand-mark{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:rgba(227,179,103,.1);
  border:1px solid rgba(227,179,103,.35);
  color:var(--accent-gold);
}
.footer-brand-desc{
  color:var(--text-muted);
  font-size:.9rem;
  line-height:1.85;
  margin-bottom:16px;
  max-width:330px;
}
.footer-addr{
  display:flex;
  gap:9px;
  font-size:.85rem;
  color:var(--text-secondary);
  margin-top:14px;
}
.footer-addr i{
  color:var(--accent-cyan);
  margin-top:4px;
}
.footer-title{
  font-size:1rem;
  color:#fff;
  font-weight:700;
  margin:4px 0 20px;
  position:relative;
  padding-left:14px;
}
.footer-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.42em;
  width:3px;
  height:1em;
  border-radius:3px;
  background:var(--accent-gold);
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:var(--text-muted);
  font-size:.875rem;
  display:inline-flex;
  gap:7px;
  align-items:center;
  transition:color .25s,padding-left .25s;
}
.footer-links a i{
  font-size:.7rem;
  color:var(--text-muted);
  transition:color .25s,transform .25s;
}
.footer-links a:hover{
  color:var(--accent-gold);
  padding-left:4px;
}
.footer-links a:hover i{
  color:var(--accent-gold);
  transform:translateX(3px);
}
.footer-contact p{
  font-size:.87rem;
  margin-bottom:12px;
  color:var(--text-secondary);
  display:flex;
  gap:9px;
}
.footer-contact p i{
  color:var(--accent-gold);
  margin-top:4px;
  width:18px;
  text-align:center;
}
.footer-service-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
}
.footer-service-tags .tag{
  border:1px solid var(--border-line);
  border-radius:var(--radius-pill);
  padding:3px 12px;
  font-size:.76rem;
  color:var(--text-muted);
  background:rgba(255,255,255,.025);
}
.footer-bottom{
  border-top:1px solid var(--border-line);
  padding:22px 0 26px;
  position:relative;
  z-index:1;
}
.footer-bottom p{
  margin:0 0 8px;
  color:var(--text-muted);
  font-size:.8rem;
}
.footer-bottom .tech-links{
  display:inline-flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
}
.footer-bottom .tech-links a{
  color:var(--text-muted);
  font-size:.8rem;
}
.footer-bottom .tech-links a:hover{
  color:var(--accent-cyan);
}
.footer-bottom .footer-split{
  color:rgba(255,255,255,.2);
}
@media (max-width:767.98px){
  .footer-main .row > div{
    margin-bottom:18px;
  }
  .footer-bottom .col-md-6{
    width:100%;
  }
}
/* ===== misc ===== */
@media (max-width:767.98px){
  .article-hero{
    padding-top:44px;
  }
  .article-wrap-box{
    padding:20px;
  }
  .article-nav-box{
    flex-direction:column;
    align-items:flex-start;
  }
  .more-card-image{
    aspect-ratio:16/11;
  }
}
@media (max-width:575.98px){
  .card-padding{
    padding:20px;
  }
  .btn-highlight,
  .btn-ghost{
    width:100%;
  }
  .cta-actions{
    flex-direction:column;
  }
  .cta-actions .btn-ghost{
    width:100%;
  }
  .article-meta-line .meta-item{
    width:100%;
  }
}

/* roulang page: category1 */
:root {
  --bg-deep: #070D15;
  --bg-body: #0B111B;
  --bg-card: #101926;
  --bg-elevated: #131E2D;
  --bg-soft: #0E1622;
  --text-main: #EDF2F7;
  --text-secondary: #9FAEBD;
  --text-muted: #5F6D7E;
  --accent-gold: #E3B367;
  --accent-gold-hover: #F3CC91;
  --accent-cyan: #25D6C3;
  --border-line: rgba(158, 190, 220, 0.14);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: cubic-bezier(.2,.8,.2,1);
  --container-max: 1280px;
  --font-sans: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-en: "Barlow","Inter","DIN Alternate",sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.8;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  border: 0;
}

a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color .25s var(--transition), background-color .25s var(--transition), border-color .25s var(--transition), box-shadow .25s var(--transition), transform .25s var(--transition);
}

a:hover {
  color: var(--accent-gold);
}

button, input, optgroup, select, textarea {
  font: inherit;
  color: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

ul, ol {
  padding-left: 0;
  margin: 0;
}

.container-xxl {
  max-width: var(--container-max);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: var(--text-main);
  font-weight: 700;
}

p {
  color: #C9D3DE;
  margin-top: 0;
  margin-bottom: 1rem;
}

section {
  padding: clamp(70px, 9vw, 120px) 0;
  position: relative;
}

.section-sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  letter-spacing: .12em;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  background: rgba(37, 214, 195, .06);
  border: 1px solid rgba(37, 214, 195, .18);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 24px;
}

.section-title {
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.section-lead {
  color: var(--text-secondary);
  max-width: 780px;
  font-size: 1.0625rem;
  line-height: 1.9;
}

/* ===== Header ===== */
.navbar-main {
  position: sticky;
  top: 0;
  z-index: 1080;
  background: rgba(7, 13, 21, .86);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border-line);
  padding: 0;
}

.navbar-main::after {
  content: "";
  position: absolute;
  left: calc(50% - 100px);
  bottom: -1px;
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-gold) 40%, var(--accent-cyan) 80%, transparent);
  pointer-events: none;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  margin: 0;
  min-width: 220px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(227, 179, 103, .18), rgba(37, 214, 195, .1));
  border: 1px solid rgba(227, 179, 103, .3);
  color: var(--accent-gold);
  font-size: 18px;
  box-shadow: 0 0 22px rgba(227, 179, 103, .08);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-primary {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: .02em;
  white-space: nowrap;
}

.brand-primary strong {
  color: var(--accent-gold);
  font-weight: 700;
  margin-left: 4px;
}

.brand-sub {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2px;
}

.navbar-toggler {
  border: 1px solid var(--border-line);
  border-radius: 10px;
  color: var(--text-main);
  width: 44px;
  height: 44px;
  font-size: 18px;
  line-height: 1;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.navbar-toggler:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.navbar-collapse {
  flex-grow: 0;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.navbar-nav .nav-item {
  position: relative;
}

.navbar-nav .nav-link {
  color: var(--text-secondary);
  font-size: .9375rem;
  padding: 10px 16px;
  font-weight: 500;
  line-height: 1.4;
  border-radius: 8px;
  transition: color .2s var(--transition), background .2s var(--transition);
  position: relative;
}

.navbar-nav .nav-link:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, .04);
}

.navbar-nav .nav-link.active {
  color: var(--text-main);
}

.navbar-nav .nav-link.active::after {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent-gold);
  border-radius: 2px;
  position: absolute;
  left: 17px;
  bottom: 2px;
}

.navbar-nav .nav-link.active::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  position: absolute;
  left: 32px;
  bottom: 7px;
}

.nav-cta {
  margin-left: 14px;
}

.btn-highlight {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-gold), #EAC486);
  color: #0B111B;
  font-weight: 700;
  font-size: .875rem;
  padding: 10px 24px;
  border-radius: 999px;
  border: 0;
  white-space: nowrap;
  transition: all .3s var(--transition);
  box-shadow: 0 0 0 0 transparent;
}

.btn-highlight:hover {
  background: var(--accent-gold-hover);
  color: #0B111B;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(227, 179, 103, .25);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  min-height: 360px;
  background: url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
  display: flex;
  align-items: center;
  padding: 90px 0 70px;
  border-bottom: 1px solid var(--border-line);
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(7, 13, 21, .98) 0%, rgba(8, 15, 25, .9) 45%, rgba(9, 17, 27, .55) 100%),
    radial-gradient(circle at 85% 20%, rgba(227, 179, 103, .18), transparent 45%);
}

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

.crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .8125rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  list-style: none;
}

.crumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.crumb li + li::before {
  content: "/";
  color: var(--text-muted);
  opacity: .6;
}

.crumb a {
  color: var(--text-muted);
}

.crumb a:hover {
  color: var(--accent-gold);
}

.crumb .active {
  color: var(--accent-gold);
}

.banner-tagline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .8125rem;
  letter-spacing: .14em;
  color: var(--accent-cyan);
  font-weight: 600;
  border: 1px solid rgba(37, 214, 195, .2);
  background: rgba(37, 214, 195, .06);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.banner-tagline::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent-cyan);
}

.page-banner h1 {
  font-size: clamp(1.9rem, 4.4vw, 3.5rem);
  letter-spacing: -0.02em;
  line-height: 1.22;
  font-weight: 800;
  margin: 0 0 18px;
  word-break: break-word;
}

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

.hero-lead {
  display: block;
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 650px;
  line-height: 1.9;
  margin-bottom: 28px;
}

.banner-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.banner-pills a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  padding: 7px 18px;
  font-size: .8125rem;
  color: var(--text-secondary);
  background: rgba(10, 17, 27, .7);
  transition: all .3s var(--transition);
}

.banner-pills a i {
  color: var(--accent-gold);
  font-size: 11px;
}

.banner-pills a:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  transform: translateY(-2px);
}

/* ===== Platform intro ===== */
.platform-intro {
  background: var(--bg-body);
}

.intro-inner {
  display: flex;
  gap: 50px;
  align-items: center;
}

.intro-label {
  font-family: var(--font-en);
  font-size: .8125rem;
  letter-spacing: .24em;
  color: var(--accent-gold);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.intro-label::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--accent-gold);
}

.intro-list {
  list-style: none;
  margin: 24px 0 0;
}

.intro-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-secondary);
  padding: 11px 0;
  border-bottom: 1px solid var(--border-line);
  font-size: .9375rem;
}

.intro-list li:last-child {
  border-bottom: 0;
}

.intro-list li i {
  color: var(--accent-cyan);
  font-size: .875rem;
  margin-top: 7px;
}

.intro-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255,255,255,.06), 0 32px 60px -30px rgba(0,0,0,.9);
}

.intro-visual img {
  width: 100%;
  min-height: 320px;
  object-fit: cover;
  display: block;
}

.intro-visual .visual-caption {
  position: absolute;
  left: 18px;
  bottom: 18px;
  background: rgba(7, 13, 21, .78);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 999px;
  padding: 8px 18px;
  color: var(--text-main);
  font-size: .8125rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.intro-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,13,21,.4), transparent 50%);
}

/* ===== metrics ===== */
.metric-band {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  padding: 52px 0;
}

.metric-item {
  text-align: center;
  padding: 24px 16px;
  border-left: 1px solid var(--border-line);
}

.metric-item:first-child {
  border-left: 0;
}

.metric-number {
  font-family: var(--font-en);
  font-size: clamp(2rem, 3.4vw, 3rem);
  font-weight: 700;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  letter-spacing: -0.02em;
  background: linear-gradient(100deg, var(--text-main), #B8C4D1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-number em {
  font-style: normal;
  color: var(--accent-gold);
  -webkit-text-fill-color: var(--accent-gold);
  font-size: .8em;
  margin-left: 3px;
}

.metric-label {
  margin-top: 10px;
  font-size: .9375rem;
  color: var(--text-secondary);
}

.metric-sub {
  display: block;
  font-size: .75rem;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: .04em;
}

/* ===== feature alternate list ===== */
.feature-showcase {
  background: var(--bg-body);
}

.section-head {
  margin-bottom: clamp(48px, 7vw, 72px);
  position: relative;
}

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

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

.feature-block + .feature-block {
  margin-top: clamp(64px, 7vw, 96px);
  padding-top: clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--border-line);
}

.feature-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255,255,255,.05), 0 28px 60px -28px rgba(0,0,0,.85);
}

.feature-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
  transition: transform .8s var(--transition);
}

.feature-block:hover .feature-media img {
  transform: scale(1.03);
}

.feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, transparent 45%, rgba(7,13,21,.4));
}

.media-tag {
  position: absolute;
  left: 18px;
  top: 18px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(10, 16, 26, .72);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.14);
  padding: 6px 16px;
  border-radius: 999px;
  color: var(--text-main);
  font-size: .75rem;
  letter-spacing: .06em;
  font-family: var(--font-en);
}

.media-index {
  position: absolute;
  right: 28px;
  bottom: -14px;
  z-index: 2;
  font-family: var(--font-en);
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1;
  color: rgba(227, 179, 103, .25);
  -webkit-text-stroke: 1px rgba(227, 179, 103, .4);
  text-shadow: 0 0 40px rgba(227,179,103,.1);
}

.feature-content .feature-no {
  font-family: var(--font-en);
  font-size: .8125rem;
  letter-spacing: .2em;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.feature-content .feature-no::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent-cyan);
}

.feature-content h3 {
  font-size: clamp(1.25rem, 2.2vw, 1.8rem);
  margin-bottom: 18px;
}

.feature-content p {
  color: var(--point);
}

.feature-list {
  list-style: none;
  margin: 24px 0;
}

.feature-list li {
  position: relative;
  padding-left: 24px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: .9375rem;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--accent-gold);
  transform: rotate(45deg);
  border-radius: 2px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.feature-tags span {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(227,179,103,.3);
  background: rgba(227,179,103,.06);
  border-radius: 999px;
  color: var(--accent-gold);
  font-size: .8125rem;
  padding: 5px 14px;
}

/* ===== service scene ===== */
.scene-band {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}

.scene-grid {
  gap: 24px 0;
}

.scene-card {
  height: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 30px;
  transition: transform .35s var(--transition), box-shadow .35s var(--transition), border-color .35s;
}

.scene-card:hover {
  transform: translateY(-5px);
  border-color: rgba(227,179,103,.35);
  box-shadow: 0 24px 50px -28px rgba(0,0,0,.8);
}

.scene-card .scene-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  color: var(--accent-gold);
  background: rgba(227,179,103,.1);
  border: 1px solid rgba(227,179,103,.25);
  font-size: 18px;
  margin-bottom: 20px;
}

.scene-card.wide-card {
  background: linear-gradient(135deg, rgba(19,30,45,.9) 0%, rgba(10,17,26,.9) 100%);
}

.scene-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.scene-card p {
  color: var(--text-secondary);
  font-size: .9375rem;
  margin-bottom: 0;
}

/* ===== Access flow ===== */
.flow-step {
  position: relative;
  padding: 30px 18px 30px 4px;
  counter-increment: flow;
}

.flow-step::after {
  content: counter(flow, decimal-leading-zero);
  font-family: var(--font-en);
  font-size: 2.6rem;
  font-weight: 800;
  display: block;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(227,179,103,.5);
  margin-bottom: 14px;
}

.flow-line {
  width: 28px;
  height: 1px;
  background: var(--accent-gold);
  margin: 0 0 16px;
}

.flow-step h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.flow-step p {
  color: var(--text-secondary);
  font-size: .875rem;
  margin: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-body);
}

.accordion-faq .accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border-line);
  border-radius: 0 !important;
}

.accordion-faq .accordion-button {
  background: transparent;
  border: 0;
  box-shadow: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 1rem;
  padding: 22px 48px 22px 18px;
  position: relative;
  border-radius: 0 !important;
  line-height: 1.5;
}

.accordion-faq .accordion-button:hover {
  color: var(--accent-gold);
}

.accordion-faq .accordion-button:not(.collapsed) {
  background: var(--bg-soft);
  color: var(--accent-gold);
}

.accordion-faq .accordion-button::after {
  display: none;
}

.accordion-faq .accordion-button::before {
  content: "\2B";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--accent-gold);
  transition: transform .3s var(--transition);
  font-weight: 400;
  width: 20px;
  text-align: center;
}

.accordion-faq .accordion-button:not(.collapsed)::before {
  content: "\2212";
}

.accordion-faq .accordion-body {
  color: var(--text-secondary);
  background: var(--bg-soft);
  padding: 8px 28px 24px 18px;
  border-radius: 0 0 10px 10px;
  font-size: .9375rem;
  line-height: 1.9;
}

/* ===== CTA final ===== */
.cta-final {
  background: linear-gradient(120deg, var(--bg-deep), var(--bg-card));
  border-top: 1px solid var(--border-line);
  padding: 0;
  overflow: hidden;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: clamp(70px, 8vw, 110px) 20px;
}

.cta-inner h2 {
  font-size: clamp(1.5rem, 3vw, 2.6rem);
  max-width: 620px;
  margin-bottom: 16px;
}

.cta-inner p {
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 0;
}

.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent-gold);
  color: #0B111B;
  border: 1px solid var(--accent-gold);
  font-weight: 700;
  font-size: .9375rem;
  padding: 13px 34px;
  border-radius: 999px;
  transition: all .3s var(--transition);
  box-shadow: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--accent-gold);
  border: 1px solid rgba(227,179,103,.35);
  font-weight: 600;
  font-size: .9375rem;
  padding: 12px 32px;
  border-radius: 999px;
}

.btn-main:hover,
.btn-ghost:hover {
  color: #0B111B;
  background: var(--accent-gold-hover);
  border-color: var(--accent-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(227,179,103,.25);
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
  font-weight: 600;
  font-size: .9375rem;
}

.arrow-link i {
  color: var(--accent-gold);
  font-size: .875rem;
  transition: transform .3s var(--transition);
}

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

.arrow-link:hover i {
  transform: translateX(5px);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-line);
  position: relative;
  overflow: hidden;
  font-size: .9375rem;
}

.footer-bg-word {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(3rem, 9vw, 8rem);
  font-weight: 800;
  color: rgba(255,255,255,.02);
  letter-spacing: .05em;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.footer-main {
  position: relative;
  z-index: 2;
  padding: 68px 0 50px;
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(227,179,103,.12);
  border: 1px solid rgba(227,179,103,.3);
  border-radius: 8px;
  color: var(--accent-gold);
  font-size: 15px;
}

.footer-brand-desc {
  color: var(--text-secondary);
  font-size: .9375rem;
  line-height: 1.9;
  margin-bottom: 18px;
}

.footer-addr {
  display: flex;
  gap: 12px;
  color: var(--text-muted);
  font-size: .875rem;
  line-height: 1.75;
}

.footer-addr i {
  color: var(--accent-gold);
  margin-top: 4px;
}

.footer-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: .02em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 11px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: .875rem;
}

.footer-links a i {
  font-size: .7rem;
  color: var(--text-muted);
  transition: all .3s var(--transition);
}

.footer-links a:hover {
  color: var(--accent-gold);
}

.footer-links a:hover i {
  color: var(--accent-gold);
  transform: translateX(4px);
}

.footer-contact p {
  display: flex;
  gap: 10px;
  color: var(--text-secondary);
  font-size: .875rem;
  margin-bottom: 10px;
}

.footer-contact i {
  color: var(--accent-cyan);
  margin-top: 6px;
  width: 16px;
  text-align: center;
  font-size: .8125rem;
}

.footer-service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.footer-service-tags .tag {
  font-size: .75rem;
  color: var(--text-muted);
  border: 1px solid var(--border-line);
  border-radius: 999px;
  padding: 3px 12px;
  transition: all .3s;
}

.footer-service-tags .tag:hover {
  color: var(--accent-gold);
  border-color: rgba(227,179,103,.4);
}

.footer-bottom {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--border-line);
  padding: 22px 0;
  font-size: .8125rem;
  color: var(--text-muted);
}

.footer-bottom-col {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-bottom a {
  color: var(--text-muted);
  margin-left: 16px;
}

.footer-bottom a:hover {
  color: var(--accent-gold);
}

/* gradient line separators */
.gradient-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.1) 20%, rgba(255,255,255,.14) 80%, transparent);
  border: 0;
}

/* ===== responsive ===== */
@media (min-width: 992px) {
  .navbar-collapse {
    display: flex !important;
    flex-basis: auto;
    flex-grow: 0;
  }

  .navbar-toggler {
    display: none;
  }
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(7, 13, 21, .97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-line);
    padding: 18px 20px 24px;
    flex-direction: column;
    align-items: stretch;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }

  .navbar-nav {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 2px;
    margin: 10px 0;
  }

  .navbar-nav .nav-link {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 1rem;
  }

  .navbar-nav .nav-link.active {
    background: rgba(227, 179, 103, .08);
    color: var(--accent-gold);
  }

  .navbar-nav .nav-link.active::before {
    left: 2px;
    top: 18px;
    bottom: auto;
  }

  .navbar-nav .nav-link.active::after {
    left: 14px;
    bottom: 6px;
  }

  .nav-cta {
    width: 100%;
    margin: 8px 0 0;
  }

  .nav-cta .btn-highlight {
    width: 100%;
  }

  .brand-primary {
    font-size: 15px;
  }

  .intro-inner {
    flex-direction: column;
  }

  .page-banner {
    padding: 70px 0 55px;
  }
}

@media (max-width: 767.98px) {
  body {
    font-size: .9375rem;
  }

  .metric-item {
    border-left: 0;
    border-bottom: 1px solid var(--border-line);
    padding: 22px 8px;
  }

  .metric-item:nth-child(odd) {
    border-right: 1px solid var(--border-line);
  }

  .metric-item:nth-child(3),
  .metric-item:nth-child(4) {
    border-bottom: 0;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 60px 0;
  }

  .footer-main {
    padding: 52px 0 40px;
  }

  .footer-bottom-col {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .brand-primary {
    font-size: 14px;
  }

  .brand-sub {
    display: none;
  }

  .page-banner {
    min-height: 330px;
  }

  .page-banner h1 {
    font-size: 1.7rem;
  }

  .feature-media img {
    aspect-ratio: 4 / 3;
  }

  .banner-pills a {
    width: 100%;
  }
}

/* roulang page: category2 */
:root {
            --bg-deep: #070D15;
            --bg-body: #0B111B;
            --bg-card: #101926;
            --bg-soft: #0E1622;
            --text-main: #EDF2F7;
            --text-secondary: #9FAEBD;
            --text-muted: #5F6D7E;
            --accent-gold: #E3B367;
            --accent-gold-hover: #F3CC91;
            --accent-cyan: #25D6C3;
            --border-line: rgba(158, 190, 220, .14);
            --shadow-card: 0 1px 0 rgba(255, 255, 255, .03) inset, 0 20px 40px -24px rgba(0, 0, 0, .9);
            --shadow-hover: 0 0 0 1px rgba(227, 179, 103, .08), 0 30px 60px -24px rgba(0, 0, 0, .65);
            --transition: all .3s cubic-bezier(.2, .8, .2, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            --font-en: "Barlow", "Inter", "DIN Alternate", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-body);
            color: var(--text-main);
            font-family: var(--font-sans);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--accent-gold-hover);
        }

        button,
        input,
        textarea {
            font-family: var(--font-sans);
        }

        .container-xxl {
            max-width: 1280px;
        }

        .text-secondary {
            color: var(--text-secondary) !important;
        }

        /* ===== 导航 ===== */
        .navbar-main {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(7, 13, 21, .88);
            backdrop-filter: saturate(140%) blur(14px);
            -webkit-backdrop-filter: saturate(140%) blur(14px);
            border-bottom: 1px solid var(--border-line);
        }

        .navbar-main nav.container-xxl {
            min-height: 70px;
            gap: 14px;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin: 0;
            padding: 4px 0;
            min-width: 0;
            flex-shrink: 0;
        }

        .brand-logo {
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(227, 179, 103, .2), rgba(227, 179, 103, .06));
            border: 1px solid rgba(227, 179, 103, .35);
            color: var(--accent-gold);
            font-size: 18px;
        }

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

        .brand-primary {
            font-size: 1.16rem;
            font-weight: 700;
            letter-spacing: .01em;
            color: #fff;
            white-space: nowrap;
        }

        .brand-primary strong {
            color: var(--accent-gold);
            font-weight: 800;
        }

        .brand-sub {
            font-size: .62rem;
            letter-spacing: .2em;
            color: var(--text-muted);
            font-family: var(--font-en);
            text-transform: uppercase;
            margin-top: 2px;
        }

        .navbar-toggler {
            border: 1px solid var(--border-line);
            color: var(--text-main);
            padding: 8px 12px;
            border-radius: 10px;
            background: rgba(255, 255, 255, .03);
            font-size: 18px;
            line-height: 1;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--accent-gold);
        }

        .navbar-collapse {
            flex-wrap: nowrap;
        }

        .navbar-nav {
            gap: 2px;
        }

        .nav-link {
            padding: 12px 15px !important;
            color: var(--text-secondary);
            font-size: .95rem;
            font-weight: 500;
            position: relative;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .03);
        }

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

        .nav-cta {
            display: flex;
            align-items: center;
        }

        .btn-highlight {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            background: var(--accent-gold);
            color: #081018;
            font-weight: 700;
            font-size: .9rem;
            padding: 10px 22px;
            border-radius: 999px;
            border: 1px solid var(--accent-gold);
            white-space: nowrap;
            transition: var(--transition);
        }

        .btn-highlight:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #081018;
            box-shadow: 0 0 0 5px rgba(227, 179, 103, .22);
            transform: translateY(-2px);
        }

        @media (min-width: 992px) {
            .navbar-main .navbar-collapse {
                display: flex !important;
                flex-grow: 1;
                align-items: center;
                justify-content: flex-end;
                gap: 12px;
            }

            .navbar-main .navbar-nav {
                flex-direction: row;
                align-items: center;
                margin-left: 10px;
            }

            .nav-link.active::after {
                content: "";
                position: absolute;
                left: 14px;
                right: 36px;
                bottom: 2px;
                height: 2px;
                background: linear-gradient(90deg, var(--accent-gold), rgba(227, 179, 103, 0));
                border-radius: 2px;
            }

            .nav-cta {
                margin-left: 12px;
            }
        }

        @media (max-width: 991.98px) {
            .navbar-main nav.container-xxl {
                min-height: 64px;
                flex-wrap: wrap;
            }

            .navbar-main .navbar-collapse {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #0B111B;
                border-bottom: 1px solid var(--border-line);
                padding: 16px 18px 22px;
                box-shadow: 0 28px 40px -24px rgba(0, 0, 0, .9);
                flex-direction: column;
                align-items: stretch;
                border-radius: 0 0 14px 14px;
            }

            .navbar-main .navbar-nav {
                flex-direction: column;
                margin: 8px 0 14px;
                gap: 2px;
            }

            .nav-link {
                padding: 13px 16px !important;
                border-radius: 8px;
                font-size: 1rem;
            }

            .nav-link.active {
                background: linear-gradient(90deg, rgba(227, 179, 103, .14), rgba(227, 179, 103, 0));
                border-left: 3px solid var(--accent-gold);
                color: var(--accent-gold-hover);
                padding-left: 20px !important;
            }

            .nav-cta {
                display: flex;
                width: 100%;
            }

            .nav-cta .btn-highlight {
                width: 100%;
                padding: 13px 24px;
            }

            .brand-primary {
                font-size: 1.04rem;
            }
        }

        /* ===== 通用板块 ===== */
        .page-section {
            padding: clamp(64px, 8vw, 104px) 0;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            letter-spacing: .12em;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-kicker::before {
            content: "";
            width: 22px;
            height: 1px;
            background: var(--accent-cyan);
            display: inline-block;
        }

        .section-title {
            font-size: clamp(1.65rem, 3.2vw, 2.6rem);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: .01em;
        }

        .section-lead {
            color: var(--text-secondary);
            font-size: 1.06rem;
            max-width: 680px;
            line-height: 2;
        }

        /* ===== 分类页 Banner ===== */
        .category-banner {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            padding: 80px 0 64px;
            isolation: isolate;
        }

        .category-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 13, 21, .96) 10%, rgba(7, 13, 21, .82) 50%, rgba(7, 13, 21, .62) 100%), linear-gradient(0deg, #070D15 0%, rgba(7, 13, 21, .3) 50%, rgba(7, 13, 21, .05) 100%);
            z-index: -1;
        }

        .category-banner .container-xxl {
            position: relative;
        }

        .category-banner-label {
            font-size: .8rem;
            letter-spacing: .18em;
            font-family: var(--font-en);
            color: var(--accent-cyan);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .category-banner-label span {
            width: 26px;
            height: 1px;
            background: var(--accent-cyan);
        }

        .category-banner h1 {
            font-size: clamp(2rem, 5vw, 3.4rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin: 0 0 14px;
        }

        .category-banner h1 .accent-text {
            color: var(--accent-gold);
        }

        .category-banner-desc {
            font-size: 1.06rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        .breadcrumb-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-bottom: 22px;
            font-size: .82rem;
            color: var(--text-muted);
        }

        .breadcrumb-line a {
            color: var(--text-secondary);
        }

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

        .breadcrumb-line .separate {
            color: var(--text-muted);
        }

        @media (max-width: 767.98px) {
            .category-banner {
                min-height: 320px;
                padding: 60px 0 44px;
            }
        }

        /* ===== 栏目总览 ===== */
        .overview-block {
            background: linear-gradient(180deg, var(--bg-deep), var(--bg-body));
            border-bottom: 1px solid var(--border-line);
        }

        .overview-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: 20px;
            padding: clamp(28px, 5vw, 56px);
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .overview-panel .overview-mark {
            font-size: 2.4rem;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(227, 179, 103, .45);
            line-height: 1;
            margin-bottom: 14px;
            font-family: var(--font-en);
            display: block;
        }

        .overview-panel p {
            color: var(--text-secondary);
            margin-bottom: 0;
            font-size: 1rem;
            line-height: 2;
        }

        .overview-info-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .overview-info-list li {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: 16px;
            padding: 18px 24px;
            margin-bottom: 12px;
            color: var(--text-secondary);
            font-size: .98rem;
            transition: var(--transition);
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .overview-info-list li i {
            color: var(--accent-gold);
            font-size: 16px;
            margin-top: 6px;
            flex: 0 0 auto;
        }

        .overview-info-list li strong {
            color: var(--text-main);
            font-weight: 650;
            display: block;
            margin-bottom: 4px;
        }

        .overview-info-list li:hover {
            border-color: rgba(227, 179, 103, .3);
            transform: translateX(6px);
            box-shadow: var(--shadow-hover);
        }

        /* ===== 服务视觉卡 ===== */
        .visual-section {
            background: var(--bg-body);
            position: relative;
        }

        .visual-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .12), transparent);
        }

        .service-feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
            transition: var(--transition);
        }

        .service-feature-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(227, 179, 103, .18);
        }

        .service-media {
            height: 100%;
            min-height: 320px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .service-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .65s cubic-bezier(.2, .8, .2, 1);
        }

        .service-feature-card:hover .service-media img {
            transform: scale(1.04);
        }

        .service-body {
            padding: clamp(28px, 4.5vw, 64px);
            display: flex;
            flex-direction: column;
            justify-content: center;
            height: 100%;
        }

        .service-feature-num {
            font-size: 1rem;
            font-family: var(--font-en);
            color: var(--accent-cyan);
            font-weight: 600;
            letter-spacing: .1em;
            margin-bottom: 10px;
        }

        .service-body h3 {
            font-size: clamp(1.35rem, 2.2vw, 2rem);
            font-weight: 750;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .service-body p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 2;
            margin-bottom: 20px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .service-tag {
            background: rgba(37, 214, 195, .06);
            border: 1px solid rgba(37, 214, 195, .24);
            color: #8FE8DD;
            font-size: .76rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: .04em;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-main);
            font-weight: 600;
            font-size: .93rem;
        }

        .text-link i {
            transition: transform .3s ease;
            color: var(--accent-gold);
        }

        .text-link:hover {
            color: var(--accent-gold);
            transform: translateX(4px);
        }

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

        @media (max-width: 991.98px) {
            .service-media {
                min-height: 300px;
            }
        }

        @media (max-width: 575.98px) {
            .service-media {
                min-height: 240px;
            }
        }

        /* ===== 服务流程 ===== */
        .process-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-line);
            border-bottom: 1px solid var(--border-line);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .process-item {
            background: rgba(255, 255, 255, .025);
            border: 1px solid var(--border-line);
            border-radius: 16px;
            padding: 30px 24px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .process-item:hover {
            border-color: rgba(227, 179, 103, .32);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .process-item .process-index {
            font-family: var(--font-en);
            font-size: .9rem;
            color: var(--accent-gold);
            font-weight: 700;
            letter-spacing: .06em;
        }

        .process-line {
            width: 42px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
            margin: 14px 0 18px;
            display: block;
        }

        .process-item h3 {
            font-size: 1.02rem;
            font-weight: 650;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .process-item p {
            color: var(--text-secondary);
            font-size: .9rem;
            margin: 0;
            line-height: 1.9;
        }

        @media (max-width: 991.98px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-body);
        }

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: 16px !important;
            overflow: hidden;
            margin-bottom: 14px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(227, 179, 103, .3);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 650;
            font-size: 1rem;
            padding: 22px 26px;
            border: none;
            box-shadow: none;
            line-height: 1.6;
            position: relative;
            transition: var(--transition);
            border-radius: 16px !important;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent-gold);
            background: var(--bg-soft);
            box-shadow: none;
            border-left: 3px solid var(--accent-gold);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 24px;
            font-weight: 300;
            color: var(--accent-gold);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: auto;
            height: auto;
            line-height: 1;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: "−";
            color: var(--accent-gold);
        }

        .faq-accordion .accordion-body {
            color: var(--text-secondary);
            background: var(--bg-soft);
            font-size: .95rem;
            line-height: 2;
            padding: 18px 28px 26px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: clamp(48px, 6vw, 76px) 0;
            background: var(--bg-body);
        }

        .cta-box {
            position: relative;
            background: linear-gradient(135deg, rgba(227, 179, 103, .16), rgba(37, 214, 195, .05)), var(--bg-card);
            border: 1px solid rgba(227, 179, 103, .28);
            border-radius: 24px;
            padding: clamp(30px, 5vw, 58px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -40px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(37, 214, 195, .14), transparent 60%);
            pointer-events: none;
        }

        .cta-box h2 {
            color: var(--text-main);
            font-size: clamp(1.4rem, 2.6vw, 2.05rem);
            font-weight: 750;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .cta-box p {
            color: var(--text-secondary);
            margin: 0;
            font-size: .98rem;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            flex-shrink: 0;
            z-index: 1;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-gold);
            color: #081018;
            font-weight: 700;
            font-size: .95rem;
            padding: 14px 32px;
            border-radius: 999px;
            border: 1px solid var(--accent-gold);
            transition: var(--transition);
        }

        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #081018;
            transform: translateY(-3px);
            box-shadow: 0 14px 30px -10px rgba(227, 179, 103, .45);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--accent-gold);
            font-weight: 650;
            font-size: .95rem;
            padding: 13px 30px;
            border-radius: 999px;
            border: 1px solid rgba(227, 179, 103, .4);
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(227, 179, 103, .08);
            border-color: var(--accent-gold);
            color: var(--accent-gold-hover);
        }

        @media (max-width: 767.98px) {
            .cta-box {
                flex-direction: column;
                text-align: center;
            }

            .cta-actions {
                justify-content: center;
                width: 100%;
            }

            .btn-gold,
            .btn-ghost {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            position: relative;
            background: var(--bg-deep);
            border-top: 1px solid var(--border-line);
            overflow: hidden;
        }

        .footer-bg-word {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 24px;
            width: 100%;
            text-align: center;
            font-size: clamp(60px, 12vw, 130px);
            color: rgba(255, 255, 255, .022);
            font-weight: 800;
            letter-spacing: .05em;
            white-space: nowrap;
            pointer-events: none;
            line-height: 1;
            user-select: none;
        }

        .footer-main {
            padding: 72px 0 40px;
            position: relative;
            z-index: 1;
        }

        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .footer-brand-name .brand-mark {
            width: 32px;
            height: 32px;
            flex: 0 0 32px;
            border-radius: 9px;
            background: rgba(227, 179, 103, .12);
            border: 1px solid rgba(227, 179, 103, .4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 16px;
        }

        .footer-brand-desc {
            color: var(--text-secondary);
            font-size: .92rem;
            line-height: 2;
            max-width: 380px;
            margin-bottom: 18px;
        }

        .footer-addr {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: var(--text-muted);
            font-size: .86rem;
            line-height: 1.7;
            max-width: 380px;
        }

        .footer-addr i {
            color: var(--accent-cyan);
            font-size: 16px;
            margin-top: 4px;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: .04em;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 26px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: .89rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a i {
            font-size: .7rem;
            color: var(--text-muted);
        }

        .footer-links a:hover {
            color: var(--accent-gold);
            transform: translateX(3px);
        }

        .footer-contact {
            margin-bottom: 16px;
        }

        .footer-contact p {
            color: var(--text-secondary);
            font-size: .9rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--accent-gold);
            width: 18px;
            font-size: .95rem;
        }

        .footer-service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .footer-service-tags .tag {
            background: rgba(255, 255, 255, .035);
            border: 1px solid var(--border-line);
            color: var(--text-secondary);
            font-size: .76rem;
            padding: 5px 13px;
            border-radius: 999px;
            transition: var(--transition);
        }

        .footer-service-tags .tag:hover {
            background: rgba(227, 179, 103, .06);
            color: var(--accent-gold);
            border-color: rgba(227, 179, 103, .3);
        }

        .footer-bottom {
            position: relative;
            z-index: 1;
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 18px 0 22px;
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: .8rem;
            color: var(--text-muted);
        }

        .footer-policy {
            display: flex;
            gap: 18px;
        }

        .footer-policy a {
            color: var(--text-secondary);
            font-size: .8rem;
        }

        .footer-policy a:hover {
            color: var(--accent-gold);
        }

        @media (max-width: 767.98px) {
            .footer-main {
                padding: 52px 0 28px;
            }

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

        /* ===== 备用图片空态 ===== */
        .media-placeholder {
            width: 100%;
            height: 100%;
            min-height: 240px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #0E1622, #101926);
            color: var(--text-muted);
            font-size: .88rem;
            letter-spacing: .1em;
        }

/* roulang page: category3 */
:root{
  --bg-deep:#070D15;
  --bg-body:#0B111B;
  --bg-card:#101926;
  --bg-lighten:#0E1622;
  --text-main:#EDF2F7;
  --text-secondary:#9FAEBD;
  --text-muted:#5F6D7E;
  --accent-gold:#E3B367;
  --accent-gold-hover:#F3CC91;
  --accent-cyan:#25D6C3;
  --border-line:rgba(158,190,220,0.14);
  --radius:12px;
  --radius-lg:16px;
  --shadow-card:0 1px 0 rgba(255,255,255,0.03) inset, 0 20px 40px -24px rgba(0,0,0,.9);
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-digit:"Barlow","Inter","DIN Alternate",sans-serif;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  background:var(--bg-body);
  color:var(--text-main);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body, a, button, input, textarea{transition:color .3s var(--ease), background-color .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;border:0;display:block;}
ul,ol{padding:0;margin:0;list-style:none;}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
button{background:none;border:none;cursor:pointer;}
input,textarea{font-family:inherit;}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent-cyan);
  outline-offset:3px;
  border-radius:6px;
}
.container-xxl{max-width:1280px;}
::selection{background:rgba(227,179,103,.25);color:#fff;}
.text-gold{color:var(--accent-gold);}

/* topbar */
.top-slim{
  background:#04080D;
  border-bottom:1px solid rgba(158,190,220,.08);
  font-size:12px;
  color:#8291A3;
  padding:7px 0;
  letter-spacing:.06em;
}
.top-slim i{color:var(--accent-cyan);margin-right:6px;font-size:11px;}

/* navbar */
.navbar-main{
  position:sticky;
  top:0;
  z-index:1050;
  background:rgba(7,13,21,.86);
  backdrop-filter:saturate(140%) blur(14px);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--border-line);
}
.navbar-main::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(227,179,103,.55),transparent);
  pointer-events:none;
}
.navbar-main .container-xxl{min-height:72px;gap:1.1rem;padding-top:0!important;padding-bottom:0!important;}
.navbar-main .navbar-brand{display:inline-flex;align-items:center;gap:10px;padding:0;}
.navbar-brand .brand-logo{
  width:40px;height:40px;
  display:grid;place-items:center;
  color:var(--accent-gold);
  background:linear-gradient(145deg, rgba(227,179,103,.16), rgba(227,179,103,.03));
  border:1px solid rgba(227,179,103,.35);
  border-radius:12px;
  font-size:1rem;
  box-shadow:0 0 22px rgba(227,179,103,.06);
}
.brand-primary{display:block;color:#fff;font-size:1.08rem;font-weight:800;letter-spacing:.02em;line-height:1.3;}
.brand-primary strong{color:var(--accent-gold);font-weight:800;}
.brand-sub{display:block;font-family:var(--font-digit);font-size:9px;letter-spacing:.3em;color:var(--accent-cyan);line-height:1.2;text-transform:uppercase;}
.navbar-main .navbar-toggler{border:1px solid var(--border-line);border-radius:10px;color:var(--text-main);padding:7px 10px;background:rgba(255,255,255,.02);}
.navbar-main .navbar-toggler:hover{border-color:var(--accent-gold);color:var(--accent-gold);}
.navbar-main .navbar-toggler:focus{box-shadow:none;outline:2px solid var(--accent-cyan);outline-offset:2px;}
@media (min-width:992px){
  .navbar-main .navbar-collapse{
    display:flex!important;
    align-items:center;
    flex:1;
    gap:1rem;
  }
  .navbar-main .navbar-toggler{display:none;}
  .navbar-main .navbar-nav{
    flex-direction:row;
    margin-left:.75rem;
    gap:.15rem;
  }
  .navbar-main .nav-item{position:relative;}
  .navbar-main .nav-link{
    color:var(--text-secondary);
    font-size:.95rem;
    font-weight:500;
    padding:.55rem .9rem;
    border-radius:8px;
    position:relative;
    white-space:nowrap;
  }
  .navbar-main .nav-link:hover{color:var(--text-main);background:rgba(255,255,255,.02);}
  .navbar-main .nav-link.active{color:var(--text-main);font-weight:600;}
  .navbar-main .nav-link.active::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:-4px;
    width:22px;
    height:2px;
    border-radius:999px;
    background:var(--accent-gold);
    transform:translateX(-50%);
    box-shadow:0 0 12px rgba(227,179,103,.55);
  }
}
@media (max-width:991.98px){
  .navbar-main .container-xxl{min-height:64px;}
  .navbar-main .navbar-collapse{
    position:absolute;
    left:16px;
    right:16px;
    top:calc(100% + 10px);
    background:rgba(7,13,21,.98);
    border:1px solid var(--border-line);
    border-radius:16px;
    padding:16px;
    box-shadow:0 24px 60px rgba(0,0,0,.65);
  }
  .navbar-main .navbar-nav{flex-direction:column;gap:.2rem;}
  .navbar-main .nav-link{
    display:block;
    padding:12px 16px;
    border-radius:10px;
    color:var(--text-secondary);
    font-weight:500;
    border-left:3px solid transparent;
  }
  .navbar-main .nav-link:hover{color:var(--text-main);background:rgba(255,255,255,.02);}
  .navbar-main .nav-link.active{
    color:var(--text-main);
    background:rgba(227,179,103,.07);
    border-left-color:var(--accent-gold);
  }
  .navbar-main .nav-cta{padding-top:10px;margin-top:10px;border-top:1px solid var(--border-line);}
  .navbar-main .nav-cta .btn-highlight{width:100%;justify-content:center;}
}
.btn-highlight{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.45rem;
  background:var(--accent-gold);
  color:#090E16;
  font-size:.93rem;
  font-weight:700;
  padding:12px 26px;
  border-radius:999px;
  border:1px solid transparent;
  box-shadow:0 8px 28px -10px rgba(227,179,103,.55);
  line-height:1.2;
  transition:all .3s var(--ease);
  white-space:nowrap;
}
.btn-highlight:hover{
  background:var(--accent-gold-hover);
  color:#0A0F16;
  transform:translateY(-1px);
  box-shadow:0 14px 34px -10px rgba(227,179,103,.62);
}
.btn-highlight i{font-size:.88rem;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  border:1px solid rgba(227,179,103,.4);
  color:var(--accent-gold);
  background:transparent;
  border-radius:999px;
  padding:11px 26px;
  font-weight:600;
  font-size:.93rem;
  white-space:nowrap;
}
.btn-ghost:hover{
  border-color:var(--accent-gold);
  background:rgba(227,179,103,.08);
  color:var(--accent-gold-hover);
  transform:translateY(-1px);
}

/* category hero */
.category-hero{
  position:relative;
  background:
    linear-gradient(82deg, rgba(6,10,17,.98) 0%, rgba(7,13,21,.9) 40%, rgba(7,13,21,.42) 78%, rgba(7,13,21,.2) 100%),
    url("/assets/images/backpic/back-2.webp") center center / cover no-repeat;
  padding:112px 0 100px;
  border-bottom:1px solid var(--border-line);
}
.category-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-cyan),transparent);
  opacity:.4;
}
.site-breadcrumb{
  display:flex;
  align-items:center;
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:36px;
  letter-spacing:.02em;
}
.site-breadcrumb a{color:var(--text-muted);}
.site-breadcrumb a:hover{color:var(--accent-gold);}
.site-breadcrumb i{font-size:10px;}
.site-breadcrumb span{color:var(--text-secondary);}
.category-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-digit);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.3em;
  color:var(--accent-cyan);
  text-transform:uppercase;
  margin-bottom:14px;
}
.category-eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:var(--accent-cyan);
  opacity:.7;
}
.category-hero h1{
  font-size:clamp(2.1rem, 5vw, 3.5rem);
  font-weight:800;
  letter-spacing:.02em;
  line-height:1.16;
  color:#fff;
  max-width:860px;
}
.category-hero h1 .h1-line{color:var(--accent-gold);}
.category-lead{
  max-width:760px;
  margin-top:22px;
  font-size:1.05rem;
  color:rgba(237,242,247,.88);
  line-height:1.9;
}
.category-hero .hero-tags{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  color:rgba(237,242,247,.86);
  font-size:13px;
  backdrop-filter:blur(6px);
}
.hero-tag i{color:var(--accent-cyan);font-size:10px;}
.hero-tag:hover{border-color:rgba(227,179,103,.5);color:var(--accent-gold-hover);}

/* page section common */
.page-section{padding:clamp(60px,9vw,112px) 0;}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-digit);
  font-size:.73rem;
  font-weight:600;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--accent-gold);
  margin-bottom:12px;
}
.section-eyebrow::after{
  content:"";
  width:32px;height:1px;
  background:rgba(227,179,103,.55);
}
.section-title{
  font-size:clamp(1.45rem,3vw,2.4rem);
  color:#fff;
  line-height:1.35;
  max-width:760px;
}
.section-desc{
  color:var(--text-secondary);
  font-size:1rem;
  margin-top:18px;
  max-width:860px;
  line-height:1.9;
}
.section-side-card{
  background:var(--bg-card);
  border:1px solid var(--border-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:24px 26px;
  height:100%;
}
.section-side-card .num{font-family:var(--font-digit);font-size:2rem;color:var(--accent-cyan);font-weight:600;line-height:1;}
.section-side-card h3{font-size:1.05rem;color:#fff;font-weight:650;margin:14px 0 10px;}
.section-side-card p{color:var(--text-secondary);font-size:.93rem;line-height:1.8;}

/* segmented flex line */
.flex-line{
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.09) 20%, rgba(255,255,255,.09) 80%, transparent);
  height:1px;
  border:none;
}

/* doc index */
.section-doc-index{
  position:relative;
  background:
    linear-gradient(180deg, var(--bg-body) 0%, var(--bg-deep) 100%);
}
.doc-list{
  margin-top:50px;
  border-top:1px solid var(--border-line);
}
.doc-row{
  display:flex;
  align-items:center;
  gap:18px;
  padding:24px 12px;
  border-bottom:1px solid var(--border-line);
  color:var(--text-main);
  background:transparent;
  transition:padding-left .3s var(--ease), background-color .3s var(--ease);
}
.doc-row:hover{
  background:linear-gradient(90deg, rgba(227,179,103,.05), transparent 75%);
  padding-left:26px;
}
.doc-file-icon{
  min-width:50px;width:50px;height:50px;
  border-radius:14px;
  background:rgba(37,214,195,.08);
  border:1px solid rgba(37,214,195,.22);
  color:var(--accent-cyan);
  display:grid;place-items:center;
  font-size:1.2rem;
  flex-shrink:0;
}
.doc-content{flex:1;min-width:220px;}
.doc-name{
  display:block;
  color:#fff;
  font-weight:650;
  font-size:1.02rem;
  letter-spacing:.01em;
  line-height:1.5;
}
.doc-desc{
  display:block;
  color:var(--text-secondary);
  font-size:.9rem;
  margin-top:4px;
  line-height:1.7;
}
.doc-type{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(227,179,103,.08);
  border:1px solid rgba(227,179,103,.18);
  color:var(--accent-gold);
  padding:5px 11px;
  border-radius:999px;
  font-size:.8rem;
  flex-shrink:0;
  white-space:nowrap;
}
.doc-type i{font-size:9px;}
.doc-date{
  font-family:var(--font-digit);
  font-variant-numeric:tabular-nums;
  font-size:.9rem;
  color:var(--text-muted);
  margin:0 8px;
  min-width:105px;
  text-align:center;
  white-space:nowrap;
}
.doc-arrow{
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid var(--border-line);
  color:var(--text-muted);
  display:grid;place-items:center;
  font-size:.85rem;
  flex-shrink:0;
}
.doc-row:hover .doc-arrow{
  border-color:var(--accent-gold);
  color:var(--accent-gold);
  background:rgba(227,179,103,.08);
  transform:rotate(-45deg);
}
@media (max-width:767.98px){
  .doc-row{flex-wrap:wrap;padding:20px 6px;}
  .doc-row:hover{padding-left:12px;}
  .doc-file-icon{width:42px;min-width:42px;height:42px;font-size:1rem;border-radius:10px;}
  .doc-name{font-size:.95rem;}
  .doc-date{margin-left:auto;margin-right:0;min-width:auto;font-size:.82rem;}
  .doc-type{order:6;width:100%;margin-top:4px;}
  .doc-arrow{display:none;}
}

/* media split */
.media-split{background:var(--bg-deep);border-top:1px solid var(--border-line);border-bottom:1px solid var(--border-line);}
.section-imgwrap{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  background:var(--bg-card);
  border:1px solid var(--border-line);
  box-shadow:var(--shadow-card);
}
.section-imgwrap img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.section-imgwrap figcaption{
  position:absolute;
  left:16px;bottom:14px;
  background:rgba(5,9,15,.78);
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(8px);
  border-radius:10px;
  color:rgba(237,242,247,.9);
  font-size:12px;
  padding:6px 12px;
}
.img-badge{
  position:absolute;
  top:18px;right:18px;
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:rgba(227,179,103,.92);
  color:#090E16;
  font-size:.78rem;
  font-weight:700;
  border-radius:999px;
  padding:6px 13px;
  box-shadow:0 8px 26px rgba(0,0,0,.3);
}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:13px;}
.check-list li{
  position:relative;
  padding-left:28px;
  color:rgba(237,242,247,.84);
  font-size:.95rem;
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;top:0;
  width:18px;height:18px;
  font-size:.65rem;
  color:var(--accent-gold);
  border:1px solid rgba(227,179,103,.35);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  line-height:1;
  padding-top:1.5px;
}
.media-link{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  color:var(--accent-gold);
  font-weight:600;
  font-size:.92rem;
  margin-top:26px;
}
.media-link i{transition:transform .3s var(--ease);}
.media-link:hover{color:var(--accent-gold-hover);}
.media-link:hover i{transform:translateX(4px);}

/* coverage asymmetric */
.coverage-section{background:var(--bg-body);}
.coverage-intro{
  background:
    linear-gradient(145deg, rgba(227,179,103,.1), transparent 55%),
    var(--bg-card);
  border:1px solid var(--border-line);
  border-radius:var(--radius-lg);
  height:100%;
  padding:34px 32px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.coverage-intro .big-digit{
  position:absolute;
  right:12px;bottom:-22px;
  font-family:var(--font-digit);
  font-size:7rem;
  font-weight:800;
  color:rgba(227,179,103,.045);
  line-height:1;
  pointer-events:none;
}
.coverage-intro h3{font-size:1.4rem;color:#fff;}
.coverage-intro p{color:var(--text-secondary);font-size:.94rem;margin-top:14px;}
.coverage-list .col-md-6{margin-bottom:24px;}
.feat-mini{
  background:rgba(255,255,255,.018);
  border:1px solid var(--border-line);
  border-radius:var(--radius);
  padding:26px 24px 22px;
  height:100%;
  transition:transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.feat-mini:hover{
  transform:translateY(-4px);
  border-color:rgba(227,179,103,.3);
  background:rgba(255,255,255,.028);
}
.feat-num{
  font-family:var(--font-digit);
  color:var(--accent-cyan);
  font-size:.9rem;
  font-weight:600;
  letter-spacing:.12em;
  margin-bottom:12px;
  display:block;
}
.feat-mini i{color:var(--accent-gold);font-size:1.1rem;margin-bottom:12px;display:block;}
.feat-mini h3{font-size:1.1rem;color:#fff;margin-bottom:8px;}
.feat-mini p{color:var(--text-secondary);font-size:.89rem;line-height:1.8;}

/* steps */
.steps-section{
  background:var(--bg-deep);
  border-top:1px solid var(--border-line);
}
.step-item{
  display:flex;
  gap:18px;
  padding:28px 24px;
  background:rgba(255,255,255,.018);
  border:1px solid var(--border-line);
  border-radius:var(--radius-lg);
  height:100%;
  transition:all .3s var(--ease);
  position:relative;
}
.step-item:hover{
  border-color:rgba(37,214,195,.35);
  transform:translateY(-4px);
}
.step-index{
  font-family:var(--font-digit);
  font-size:1.3rem;
  color:var(--accent-cyan);
  border-right:1px solid var(--border-line);
  padding-right:18px;
  height:fit-content;
  font-weight:600;
  letter-spacing:.05em;
  line-height:1.2;
}
.step-item h3{color:#fff;font-size:1.05rem;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.step-item h3 i{color:var(--accent-gold);font-size:12px;opacity:.8;}
.step-item p{color:var(--text-secondary);font-size:.9rem;line-height:1.8;}
@media (max-width:767.98px){
  .step-item{padding:22px 16px;}
}

/* faq */
.faq-section{background:var(--bg-body);}
.faq-wrap{
  max-width:940px;
  margin:0 auto;
}
.faq-wrap-head{text-align:center;margin-bottom:44px;}
.faq-wrap-head .section-eyebrow{justify-content:center;}
.faq-wrap-head .section-eyebrow::before{display:none;}
.faq-wrap-head .section-eyebrow::after{display:none;}
.faq-wrap-head h2{color:#fff;font-size:clamp(1.5rem, 3vw, 2.3rem);}
.faq-wrap-head p{color:var(--text-secondary);margin-top:14px;font-size:.96rem;}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--border-line);
  border-radius:0!important;
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--border-line);}
.faq-accordion .accordion-button{
  background:transparent;
  box-shadow:none;
  color:var(--text-main);
  font-size:1.02rem;
  font-weight:600;
  padding:24px 50px 24px 8px;
  border-radius:0;
  position:relative;
  transition:color .3s var(--ease);
}
.faq-accordion .accordion-button::before{
  content:"";
  position:absolute;
  left:-1px;top:50%;
  width:3px;height:0;
  border-radius:3px;
  background:var(--accent-gold);
  transform:translateY(-50%);
  transition:height .3s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--accent-gold);background:transparent;}
.faq-accordion .accordion-button:not(.collapsed)::before{height:28px;}
.faq-accordion .accordion-button::after{
  display:none;
}
.faq-accordion .accordion-button .faq-icon{
  position:absolute;
  right:0;top:50%;
  width:26px;height:26px;
  border:1px solid var(--border-line);
  border-radius:50%;
  color:var(--accent-gold);
  display:grid;place-items:center;
  font-size:.7rem;
  transform:translateY(-50%);
  transition:all .3s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed) .faq-icon{
  background:var(--accent-gold);
  color:#090E16;
}
.faq-accordion .accordion-collapse .accordion-body{
  padding:4px 18px 26px 8px;
  color:var(--text-secondary);
  font-size:.95rem;
  line-height:1.9;
}
.faq-accordion .accordion-button:hover{color:var(--accent-gold-hover);}
.faq-accordion .accordion-button:focus{box-shadow:none;}
@media (max-width:575.98px){
  .faq-accordion .accordion-button{font-size:.95rem;padding-right:38px;}
}

/* cta */
.cta-band{
  background:
    linear-gradient(120deg, rgba(7,13,21,.28), rgba(7,13,21,.92)),
    url("/assets/images/backpic/back-1.webp") center center / cover no-repeat;
  border-top:1px solid var(--border-line);
  border-bottom:1px solid var(--border-line);
  padding:88px 0;
  position:relative;
}
.cta-inner{
  background:rgba(10,16,26,.62);
  backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.08);
  border-radius:22px;
  padding:clamp(28px,5vw,62px);
  box-shadow:0 30px 80px -28px rgba(0,0,0,.9);
}
.cta-inner h2{font-size:clamp(1.6rem,3.4vw,2.4rem);color:#fff;line-height:1.3;}
.cta-inner p{color:var(--text-secondary);font-size:1rem;margin-top:12px;max-width:680px;line-height:1.9;}
.cta-btn-group{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.cta-mark{
  position:absolute;right:0;bottom:0;
  width:220px;height:220px;
  border-radius:50%;
  background:rgba(37,214,195,.03);
  pointer-events:none;
}

/* footer */
.site-footer{
  position:relative;
  background:#050A10;
  border-top:1px solid var(--border-line);
  overflow:hidden;
}
.footer-bg-word{
  position:absolute;
  left:50%;
  bottom:-18px;
  transform:translateX(-50%);
  font-size:clamp(4rem,10vw,9rem);
  font-weight:800;
  color:rgba(255,255,255,.025);
  white-space:nowrap;
  pointer-events:none;
  letter-spacing:.04em;
  line-height:1;
  z-index:0;
}
.footer-main{
  padding:76px 0 54px;
  position:relative;
  z-index:1;
}
.footer-brand-name{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  color:#fff;
  font-weight:800;
  margin-bottom:16px;
}
.footer-brand-name .brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  background:linear-gradient(145deg, rgba(227,179,103,.2), rgba(227,179,103,.03));
  border:1px solid rgba(227,179,103,.35);
  color:var(--accent-gold);
  border-radius:10px;
  font-size:.9rem;
}
.footer-brand-desc{
  color:var(--text-muted);
  font-size:.92rem;
  line-height:1.9;
  margin-top:14px;
}
.footer-addr{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-top:22px;
  color:var(--text-secondary);
  font-size:.86rem;
  line-height:1.7;
}
.footer-addr i{color:var(--accent-cyan);margin-top:3px;}
.footer-title{
  font-size:.95rem;
  color:#fff;
  font-weight:650;
  letter-spacing:.06em;
  margin-bottom:0;
  position:relative;
  padding-bottom:10px;
}
.footer-title::after{
  content:"";
  position:absolute;
  z-index:0;
  left:0;bottom:0;
  width:22px;height:1px;
  background:var(--accent-gold);
}
.footer-links{
  margin-top:22px;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--text-muted);
  font-size:.9rem;
  padding:5px 0;
  line-height:1.6;
  transition:color .3s var(--ease), transform .3s var(--ease);
}
.footer-links a i{font-size:.7rem;color:var(--accent-cyan);opacity:.6;transition:opacity .3s var(--ease);}
.footer-links a:hover{color:var(--accent-gold);transform:translateX(4px);}
.footer-links a:hover i{opacity:1;}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-top:22px;
}
.footer-contact p{
  display:flex;
  align-items:flex-start;
  gap:10px;
  color:var(--text-muted);
  font-size:.88rem;
  line-height:1.6;
}
.footer-contact i{color:var(--accent-gold);margin-top:3px;}
.footer-service-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.footer-service-tags .tag{
  display:inline-flex;
  align-items:center;
  border:1px solid var(--border-line);
  color:var(--text-muted);
  border-radius:999px;
  padding:4px 10px;
  font-size:.77rem;
  line-height:1.6;
}
.footer-service-tags .tag:hover{
  border-color:rgba(37,214,195,.45);
  color:var(--accent-cyan);
}
.footer-bottom{
  position:relative;
  z-index:1;
  border-top:1px solid rgba(255,255,255,.06);
  padding:22px 0 26px;
  background:rgba(0,0,0,.16);
}
.footer-bottom p{color:var(--text-muted);font-size:.8rem;letter-spacing:.02em;}
.footer-bottom .footer-bottom-links{
  display:flex;gap:12px;align-items:center;flex-wrap:wrap;
}
.footer-bottom a{color:var(--text-muted);font-size:.8rem;}
.footer-bottom a:hover{color:var(--accent-gold);}
.footer-bottom-sep{color:#3A4655;font-size:.75rem;}

@media (max-width:991.98px){
  .category-hero{padding:90px 0 72px;}
  .menu-side-card{margin-top:18px;}
}
@media (max-width:767.98px){
  .top-slim{display:none;}
  .section-title{font-size:1.4rem;}
  .section-desc{font-size:.92rem;}
  .hero-tag{padding:6px 11px;font-size:12px;}
  .doc-list{margin-top:32px;}
  .cta-band{padding:58px 0;}
  .cta-inner{padding:26px 20px;}
  .cta-btn-group .btn-highlight,
  .cta-btn-group .btn-ghost{width:100%;}
}

/* roulang page: category4 */
/* ===== design tokens ===== */
    :root {
      --bg-deep: #070D15;
      --bg-body: #0B111B;
      --bg-card: #101926;
      --bg-elevated: #131E2C;
      --bg-soft: #0C1420;
      --text-main: #EDF2F7;
      --text-body: #C9D3DE;
      --text-secondary: #9FAEBD;
      --text-muted: #5F6D7E;
      --accent-gold: #E3B367;
      --accent-gold-hover: #F3CC91;
      --accent-cyan: #25D6C3;
      --border-line: rgba(158, 190, 220, 0.14);
      --radius-card: 12px;
      --radius-pill: 999px;
      --radius-soft: 8px;
      --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
      --font-en: "Inter", "Barlow", "DIN Alternate", sans-serif;
      --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 20px 40px -24px rgba(0, 0, 0, 0.9);
      --shadow-card-hover: 0 0 0 1px rgba(227, 179, 103, 0.06), 0 30px 60px -24px rgba(0, 0, 0, 0.6);
      --ease-md: cubic-bezier(.2, .8, .2, 1);
    }

    /* ===== base ===== */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-cn);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-secondary);
      background: var(--bg-body);
      background-image: radial-gradient(circle at 86% -10%, rgba(227, 179, 103, 0.05), transparent 30%), radial-gradient(circle at 5% 20%, rgba(37, 214, 195, 0.03), transparent 28%);
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      overflow-x: hidden;
    }

    main {
      flex: 1;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .25s ease;
    }

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

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

    ul,
    ol {
      padding-left: 0;
      list-style: none;
      margin-bottom: 0;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--accent-cyan);
      outline-offset: 3px;
    }

    .container-xxl {
      max-width: 1280px;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* ===== shared header ===== */
    .navbar-main {
      position: sticky;
      top: 0;
      z-index: 1080;
      background: rgba(7, 13, 21, 0.88);
      backdrop-filter: saturate(140%) blur(14px);
      -webkit-backdrop-filter: saturate(140%) blur(14px);
      border-bottom: 1px solid var(--border-line);
    }

    .navbar-main::after {
      content: "";
      position: absolute;
      left: 24px;
      right: auto;
      bottom: -1px;
      width: min(200px, 40%);
      height: 1px;
      background: linear-gradient(90deg, rgba(227, 179, 103, 0), var(--accent-gold), rgba(227, 179, 103, 0));
      pointer-events: none;
    }

    .navbar-main .container-xxl {
      min-height: 72px;
      position: relative;
    }

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

    .brand-logo {
      width: 36px;
      height: 36px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      color: var(--bg-deep);
      background: linear-gradient(145deg, var(--accent-gold-hover), var(--accent-gold));
      box-shadow: 0 0 0 1px rgba(227, 179, 103, 0.3), 0 6px 20px -8px rgba(227, 179, 103, 0.5);
      font-size: 16px;
      transition: transform .3s var(--ease-md);
    }

    .navbar-brand:hover .brand-logo {
      transform: rotate(-6deg) scale(1.03);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
      overflow: hidden;
    }

    .brand-primary {
      font-size: 15px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--text-main);
      white-space: nowrap;
    }

    .brand-primary strong {
      font-weight: 800;
      color: var(--accent-gold);
    }

    .brand-sub {
      font-family: var(--font-en);
      font-size: 9px;
      letter-spacing: 0.2em;
      color: rgba(157, 177, 199, 0.55);
      margin-top: 4px;
      text-transform: uppercase;
    }

    .navbar-toggler {
      background: transparent;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-pill);
      color: var(--text-main);
      width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 19px;
      transition: border-color .25s ease, color .25s ease;
    }

    .navbar-toggler:hover {
      border-color: rgba(227, 179, 103, 0.5);
      color: var(--accent-gold);
    }

    .navbar-collapse {
      flex-grow: 0;
    }

    .navbar-nav {
      align-items: stretch;
      gap: 0.3rem;
      margin-left: auto;
      margin-right: 0;
      flex-wrap: wrap;
    }

    .nav-link {
      display: flex;
      align-items: center;
      padding: 0.58rem 0.9rem;
      font-weight: 500;
      font-size: 15px;
      color: var(--text-secondary);
      border-radius: var(--radius-pill);
      position: relative;
      transition: color .25s ease, background .25s ease, transform .25s ease;
      white-space: nowrap;
    }

    .nav-link:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.04);
      transform: translateY(-1px);
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      bottom: 2px;
      width: 18px;
      height: 2px;
      background: var(--accent-gold);
      border-radius: 2px;
      opacity: 0;
      transition: opacity .25s ease, width .25s ease, box-shadow .25s ease;
    }

    .nav-link.active {
      color: #ffffff;
    }

    .nav-link.active::after {
      opacity: 1;
      width: 22px;
      box-shadow: 0 0 10px rgba(227, 179, 103, 0.5);
    }

    .nav-cta {
      margin-left: 12px;
      align-items: center;
    }

    .btn-highlight {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 28px;
      border-radius: var(--radius-pill);
      background: var(--accent-gold);
      color: #0b0f15;
      font-weight: 700;
      font-size: 14px;
      border: 0;
      line-height: 1.4;
      white-space: nowrap;
      cursor: pointer;
      box-shadow: 0 8px 22px -10px rgba(227, 179, 103, 0.5);
      transition: background .25s ease, box-shadow .25s ease, transform .25s var(--ease-md), color .25s ease;
    }

    .btn-highlight:hover,
    .btn-highlight:focus {
      background: var(--accent-gold-hover);
      color: #0b0f15;
      box-shadow: 0 10px 28px -8px rgba(227, 179, 103, 0.55), 0 0 0 4px rgba(227, 179, 103, 0.15);
      transform: translateY(-1px);
    }

    .btn-outline-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 26px;
      border-radius: var(--radius-pill);
      background: transparent;
      border: 1px solid rgba(227, 179, 103, 0.35);
      color: var(--accent-gold);
      font-weight: 600;
      font-size: 14px;
      line-height: 1.5;
      white-space: nowrap;
      transition: border-color .25s ease, background .25s ease, color .25s ease, transform .25s ease;
    }

    .btn-outline-gold:hover {
      border-color: var(--accent-gold);
      background: rgba(227, 179, 103, 0.08);
      color: var(--accent-gold-hover);
      transform: translateY(-1px);
    }

    .arrow-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-secondary);
      transition: color .25s ease, gap .25s ease;
    }

    .arrow-link i {
      font-size: 13px;
      transition: transform .25s var(--ease-md);
    }

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

    .arrow-link:hover i {
      transform: translateX(3px);
    }

    @media (max-width: 991.98px) {
      .navbar-main {
        min-height: 60px;
      }

      .navbar-main .container-xxl {
        min-height: 60px;
      }

      .navbar-collapse {
        width: 100%;
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        background: rgba(8, 14, 24, 0.98);
        border-bottom: 1px solid var(--border-line);
        padding: 14px 20px 20px;
        border-radius: 0 0 16px 16px;
        backdrop-filter: blur(16px);
      }

      .navbar-nav {
        flex-direction: column;
        width: 100%;
        gap: 0.4rem;
      }

      .nav-link {
        padding: 0.78rem 1rem;
        border-radius: 8px;
        white-space: normal;
      }

      .nav-link::after {
        left: 14px;
        transform: none;
        right: auto;
        bottom: auto;
        top: 50%;
        width: 3px;
        height: 18px;
        margin-top: -9px;
        border-radius: 3px;
      }

      .nav-link.active {
        background: rgba(227, 179, 103, 0.08);
      }

      .nav-cta {
        width: 100%;
        margin-left: 0;
        margin-top: 14px;
      }

      .nav-cta .btn-highlight {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .container-xxl {
        padding-left: 1rem;
        padding-right: 1rem;
      }

      .brand-logo {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        font-size: 14px;
      }

      .brand-primary {
        font-size: 13px;
      }

      .brand-sub {
        font-size: 8px;
        letter-spacing: 0.12em;
      }
    }

    /* ===== category banner ===== */
    .category-banner {
      position: relative;
      min-height: 360px;
      display: flex;
      align-items: center;
      padding: 72px 0 60px;
      background-image: url("/assets/images/backpic/back-2.webp");
      background-position: center;
      background-size: cover;
      background-repeat: no-repeat;
      isolation: isolate;
      border-bottom: 1px solid var(--border-line);
    }

    .category-banner::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background: linear-gradient(100deg, rgba(7, 13, 21, 0.96) 0%, rgba(7, 13, 21, 0.84) 42%, rgba(7, 13, 21, 0.56) 78%, rgba(7, 13, 21, 0.78) 100%);
    }

    .banner-inner {
      max-width: 780px;
    }

    .banner-crumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 22px;
    }

    .banner-crumb a {
      color: var(--text-secondary);
      transition: color .25s ease;
    }

    .banner-crumb a:hover {
      color: var(--accent-gold);
    }

    .banner-crumb i {
      font-size: 11px;
      color: rgba(237, 242, 247, 0.3);
    }

    .banner-crumb .current {
      color: var(--accent-gold);
    }

    .banner-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-family: var(--font-en);
      font-size: 12px;
      letter-spacing: 0.18em;
      color: var(--accent-cyan);
      text-transform: uppercase;
      border: 1px solid rgba(37, 214, 195, 0.25);
      background: rgba(37, 214, 195, 0.05);
      padding: 6px 14px;
      border-radius: var(--radius-pill);
      margin-bottom: 18px;
    }

    .category-banner h1 {
      font-size: clamp(2rem, 4.6vw, 3.5rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.22;
      letter-spacing: -0.01em;
      margin: 0 0 18px;
    }

    .category-banner h1 span {
      color: var(--accent-gold);
    }

    .banner-lead {
      max-width: 680px;
      font-size: 16px;
      line-height: 1.9;
      color: var(--text-secondary);
      margin-bottom: 28px;
    }

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

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

    .mini-tag {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 6px 12px;
      border-radius: var(--radius-pill);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-line);
      color: var(--text-secondary);
      font-size: 13px;
      transition: border-color .25s ease, color .25s ease, background .25s ease;
    }

    .mini-tag i {
      color: var(--accent-cyan);
      font-size: 11px;
    }

    .mini-tag:hover {
      border-color: rgba(37, 214, 195, 0.3);
      color: #fff;
      background: rgba(37, 214, 195, 0.04);
    }

    @media (max-width: 767px) {
      .category-banner {
        min-height: auto;
        padding: 56px 0 50px;
      }

      .category-banner h1 {
        font-size: 1.75rem;
      }

      .banner-crumb {
        margin-bottom: 18px;
      }
    }

    /* ===== page section ===== */
    .page-section {
      padding: clamp(72px, 9vw, 112px) 0;
      position: relative;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-family: var(--font-en);
      font-size: 12px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--accent-cyan);
      margin-bottom: 12px;
      font-weight: 600;
    }

    .section-eyebrow::before {
      content: "";
      width: 20px;
      height: 1px;
      background: var(--accent-cyan);
      opacity: 0.5;
    }

    .section-title {
      font-size: clamp(1.5rem, 2.7vw, 2.2rem);
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin: 0 0 14px;
      letter-spacing: -0.01em;
    }

    .section-desc {
      color: var(--text-secondary);
      line-height: 1.9;
      max-width: 660px;
      margin-bottom: 0;
    }

    /* ===== scope section ===== */
    .scope-section {
      background: linear-gradient(180deg, rgba(16, 25, 38, 0.6), rgba(7, 13, 21, 0.4));
      border-bottom: 1px solid transparent;
    }

    .scope-section::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background-image: linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
      background-size: 64px 64px;
    }

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

    .scope-intro {
      display: flex;
      flex-direction: column;
      height: 100%;
      padding-right: 10px;
    }

    .scope-intro .section-title {
      margin-bottom: 18px;
    }

    .scope-intro p {
      color: var(--text-secondary);
      line-height: 1.9;
      margin-bottom: 26px;
    }

    .scope-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .scope-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      color: var(--text-body);
      font-size: 15px;
    }

    .scope-list li i {
      color: var(--accent-cyan);
      margin-top: 5px;
      font-size: 17px;
      flex-shrink: 0;
    }

    .scope-link-row {
      margin-top: auto;
      padding-top: 24px;
    }

    .scope-cards-row {
      height: 100%;
    }

    .support-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      padding: 30px;
      height: 100%;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
      transition: border-color .35s ease, background .35s ease, box-shadow .35s ease, transform .35s var(--ease-md);
    }

    .support-card::before {
      content: "";
      position: absolute;
      right: -30px;
      top: -30px;
      width: 110px;
      height: 110px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(37, 214, 195, 0.06), transparent 70%);
      transition: opacity .35s ease;
      opacity: 0;
    }

    .support-card:hover {
      transform: translateY(-4px);
      border-color: rgba(227, 179, 103, 0.25);
      background: var(--bg-elevated);
      box-shadow: var(--shadow-card-hover);
    }

    .support-card:hover::before {
      opacity: 1;
    }

    .support-card-icon {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--accent-cyan);
      background: rgba(37, 214, 195, 0.08);
      border: 1px solid rgba(37, 214, 195, 0.15);
      margin-bottom: 18px;
    }

    .support-card-gold .support-card-icon {
      color: var(--accent-gold);
      background: rgba(227, 179, 103, 0.08);
      border-color: rgba(227, 179, 103, 0.18);
    }

    .support-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }

    .support-card p {
      font-size: 14px;
      line-height: 1.85;
      color: var(--text-secondary);
      margin-bottom: 18px;
    }

    .support-card .arrow-link {
      margin-top: auto;
    }

    @media (max-width: 991.98px) {
      .scope-intro {
        margin-bottom: 40px;
      }

      .scope-link-row {
        padding-top: 0;
      }
    }

    @media (max-width: 520px) {
      .support-card {
        padding: 24px 20px;
      }
    }

    /* ===== faq + contact ===== */
    .faq-contact-section {
      background: var(--bg-body);
    }

    .faq-side {
      padding-right: 10px;
    }

    .faq-heading {
      margin-bottom: 26px;
    }

    .faq-heading p {
      color: var(--text-secondary);
      margin-bottom: 0;
    }

    .faq-accordion {
      --bs-accordion-border-width: 0;
      --bs-accordion-border-radius: 0;
      --bs-accordion-inner-border-radius: 0;
      --bs-accordion-bg: transparent;
      --bs-accordion-btn-bg: transparent;
      --bs-accordion-active-bg: transparent;
      --bs-accordion-btn-focus-box-shadow: none;
    }

    .faq-accordion .accordion-item {
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--border-line);
      border-left: 2px solid transparent;
      transition: border-color .3s ease;
    }

    .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-left-color: var(--accent-gold);
      border-bottom-color: rgba(227, 179, 103, 0.18);
    }

    .faq-accordion .accordion-button {
      background: transparent;
      color: var(--text-main);
      font-weight: 600;
      font-size: 16px;
      padding: 19px 22px;
      box-shadow: none;
      border-radius: 0;
      line-height: 1.65;
      transition: color .25s ease, background .25s ease;
    }

    .faq-accordion .accordion-button:hover {
      color: var(--accent-gold-hover);
      background: rgba(255, 255, 255, 0.025);
    }

    .faq-accordion .accordion-button:not(.collapsed) {
      color: var(--accent-gold);
      background: rgba(227, 179, 103, 0.04);
    }

    .faq-accordion .accordion-button::after {
      background-image: none;
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 13px;
      color: var(--text-muted);
      width: 18px;
      height: 18px;
      line-height: 18px;
      text-align: center;
      transition: transform .35s var(--ease-md), color .25s ease;
    }

    .faq-accordion .accordion-button:not(.collapsed)::after {
      color: var(--accent-gold);
      transform: rotate(180deg);
    }

    .faq-accordion .accordion-body {
      color: var(--text-secondary);
      padding: 4px 22px 24px;
      font-size: 15px;
      line-height: 1.9;
      background: transparent;
      border-radius: 8px;
    }

    .faq-accordion .accordion-body a {
      color: var(--accent-gold);
    }

    .faq-accordion .accordion-body a:hover {
      color: var(--accent-gold-hover);
    }

    /* contact panel */
    .contact-panel {
      position: sticky;
      top: 100px;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: 18px;
      box-shadow: var(--shadow-card);
      padding: 32px 30px;
      overflow: hidden;
    }

    .contact-panel::before {
      content: "";
      position: absolute;
      inset: 0 0 auto 0;
      height: 2px;
      background: linear-gradient(90deg, var(--accent-gold), rgba(227, 179, 103, 0.05));
    }

    .contact-head {
      margin-bottom: 22px;
    }

    .contact-icon-mark {
      width: 46px;
      height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 14px;
      color: var(--accent-gold);
      background: rgba(227, 179, 103, 0.08);
      border: 1px solid rgba(227, 179, 103, 0.16);
      font-size: 18px;
      margin-bottom: 14px;
    }

    .contact-panel h3 {
      color: var(--text-main);
      font-weight: 700;
      font-size: 1.35rem;
      margin-bottom: 8px;
    }

    .contact-panel .contact-sub {
      color: var(--text-muted);
      font-size: 14px;
      margin-bottom: 0;
      line-height: 1.75;
    }

    .contact-form label {
      display: block;
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 600;
      margin-bottom: 6px;
    }

    .contact-form label i {
      color: var(--accent-cyan);
      font-size: 12px;
      margin-right: 4px;
    }

    .form-control {
      width: 100%;
      min-height: 48px;
      background: var(--bg-soft);
      border: 1px solid var(--border-line);
      border-radius: 8px;
      color: var(--text-main);
      padding: 12px 14px;
      font-size: 14px;
      transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
    }

    .form-control::placeholder {
      color: var(--text-muted);
    }

    .form-control:hover {
      border-color: rgba(158, 190, 220, 0.28);
    }

    .form-control:focus {
      background: rgba(12, 20, 32, 0.95);
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 4px rgba(37, 214, 195, 0.1);
      color: var(--text-main);
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
      line-height: 1.7;
    }

    select.form-control {
      appearance: none;
      -webkit-appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%239FAEBD' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 15px center;
      padding-right: 40px;
      cursor: pointer;
    }

    select.form-control option {
      background: #101926;
      color: var(--text-main);
    }

    .form-btn-wrap {
      margin-top: 8px;
    }

    .form-btn-wrap .btn-highlight {
      width: 100%;
      min-height: 48px;
    }

    .form-note {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 12px;
      display: flex;
      align-items: flex-start;
      gap: 6px;
      line-height: 1.75;
    }

    .form-note i {
      margin-top: 4px;
      color: var(--accent-cyan);
      font-size: 12px;
    }

    @media (max-width: 991.98px) {
      .contact-panel {
        position: static;
        margin-top: 40px;
      }
    }

    @media (max-width: 575.98px) {
      .contact-panel {
        padding: 26px 20px;
      }
    }

    /* ===== trust strip ===== */
    .trust-band {
      padding: 34px 0;
      border-top: 1px solid var(--border-line);
      border-bottom: 1px solid var(--border-line);
      background: rgba(16, 25, 38, 0.42);
    }

    .trust-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px 34px;
    }

    .trust-item {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      font-size: 14px;
      color: var(--text-secondary);
      font-weight: 500;
    }

    .trust-item i {
      color: var(--accent-cyan);
      font-size: 15px;
    }

    @media (max-width: 767px) {
      .trust-list {
        gap: 12px 20px;
        justify-content: flex-start;
      }
    }

    /* ===== cta band ===== */
    .cta-band {
      background: #0c1420;
      border-bottom: 1px solid var(--border-line);
      padding: 0;
    }

    .cta-inner {
      position: relative;
      border-radius: 22px;
      background: linear-gradient(100deg, rgba(7, 13, 21, 0.98), rgba(16, 25, 38, 0.9)), url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
      border: 1px solid var(--border-line);
      overflow: hidden;
      padding: clamp(34px, 5vw, 58px);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
      box-shadow: var(--shadow-card);
    }

    .cta-inner::before {
      content: "";
      position: absolute;
      right: -60px;
      top: -60px;
      width: 250px;
      height: 250px;
      background: radial-gradient(circle, rgba(227, 179, 103, 0.13), transparent 68%);
      pointer-events: none;
    }

    .cta-text {
      position: relative;
      z-index: 1;
      max-width: 640px;
      flex: 1 1 420px;
    }

    .cta-kicker {
      font-family: var(--font-en);
      font-size: 12px;
      letter-spacing: 0.16em;
      color: var(--accent-cyan);
      text-transform: uppercase;
      display: block;
      margin-bottom: 10px;
    }

    .cta-text h2 {
      font-size: clamp(1.35rem, 3vw, 2.2rem);
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.35;
    }

    .cta-text p {
      color: var(--text-secondary);
      margin-bottom: 0;
      line-height: 1.8;
    }

    .cta-actions {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      flex: 0 0 auto;
    }

    @media (max-width: 767px) {
      .cta-inner {
        padding: 34px 22px;
      }

      .cta-actions .btn-highlight,
      .cta-actions .btn-outline-gold {
        width: 100%;
      }
    }

    /* ===== footer ===== */
    .site-footer {
      position: relative;
      background: #060b12;
      border-top: 1px solid var(--border-line);
      margin-top: 0;
      overflow: hidden;
    }

    .footer-bg-word {
      position: absolute;
      left: 50%;
      top: 4px;
      transform: translateX(-50%);
      font-size: clamp(40px, 7vw, 82px);
      font-weight: 800;
      color: rgba(237, 242, 247, 0.025);
      line-height: 1;
      white-space: nowrap;
      pointer-events: none;
      user-select: none;
      letter-spacing: -0.03em;
      width: max-content;
    }

    .footer-main {
      position: relative;
      z-index: 1;
      padding: 68px 0 30px;
    }

    .footer-brand-name {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent-gold-hover), var(--accent-gold));
      color: #0b0f15;
      border-radius: 9px;
      font-size: 14px;
    }

    .footer-brand-desc {
      font-size: 14px;
      line-height: 1.9;
      color: var(--text-secondary);
      max-width: 360px;
      margin-bottom: 18px;
    }

    .footer-addr {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 10px;
    }

    .footer-addr i {
      color: var(--accent-gold);
      margin-top: 4px;
      font-size: 15px;
    }

    .footer-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin: 0 0 18px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-line);
      position: relative;
    }

    .footer-title::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -1px;
      width: 26px;
      height: 1px;
      background: var(--accent-gold);
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      font-size: 14px;
      color: var(--text-secondary);
      transition: color .25s ease, transform .25s ease;
    }

    .footer-links a i {
      font-size: 11px;
      color: var(--text-muted);
      transition: color .25s ease;
    }

    .footer-links a:hover {
      color: var(--accent-gold);
      transform: translateX(3px);
    }

    .footer-links a:hover i {
      color: var(--accent-gold);
    }

    .footer-contact p {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 10px;
    }

    .footer-contact i {
      color: var(--accent-cyan);
      font-size: 15px;
      margin-top: 4px;
    }

    .footer-service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 12px;
    }

    .footer-service-tags .tag {
      display: inline-flex;
      align-items: center;
      padding: 5px 12px;
      font-size: 12px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-pill);
      color: var(--text-muted);
    }

    .footer-bottom {
      position: relative;
      z-index: 1;
      border-top: 1px solid rgba(158, 190, 220, 0.08);
      padding: 18px 0;
    }

    .footer-bottom-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-copy {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    .footer-policy {
      display: flex;
      gap: 8px;
      font-size: 12px;
      color: var(--text-muted);
    }

    .footer-policy a {
      color: var(--text-muted);
      transition: color .25s ease;
    }

    .footer-policy a:hover {
      color: var(--accent-gold);
    }

    .footer-policy span {
      opacity: .4;
    }

    @media (max-width: 767px) {
      .footer-main {
        padding-top: 48px;
      }

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

    @media (max-width: 520px) {
      .footer-service-tags .tag {
        font-size: 11px;
      }
    }