/* roulang page: index */
:root{
  --primary:#111820;
  --accent:#FF5A2A;
  --bg:#F5F6F8;
  --card:#FFFFFF;
  --text:#4B5563;
  --muted:#6B7280;
  --border:#E5E7EB;
  --success:#10B981;
  --radius:8px;
  --radius-btn:4px;
  --radius-tag:24px;
  --shadow:0 12px 32px rgba(17,24,32,.08);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit;border:none;outline:none}
ul,ol{list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{scroll-margin-top:80px}
.btn-primary{display:inline-block;background:var(--accent);color:#fff;padding:14px 32px;border-radius:var(--radius-btn);font-weight:600;transition:all .2s;cursor:pointer;border:none}
.btn-primary:hover{background:var(--primary);transform:scale(1.02)}
.btn-primary:active{transform:scale(.98)}
.btn-secondary{display:inline-block;border:1px solid var(--primary);color:var(--primary);padding:14px 32px;border-radius:var(--radius-btn);font-weight:600;transition:all .2s;background:transparent;cursor:pointer}
.btn-secondary:hover{background:var(--primary);color:#fff}
.btn-secondary:active{transform:scale(.98)}
.section-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,90,42,.08);color:var(--accent);font-size:13px;font-weight:600;padding:4px 14px;border-radius:var(--radius-tag);letter-spacing:.05em}
.section-title{margin-top:12px;font-size:42px;font-weight:700;line-height:1.2;color:var(--primary)}
.section-desc{margin-top:12px;font-size:16px;color:var(--text);max-width:560px;line-height:1.8}
.section-head{text-align:center;margin-bottom:56px}
.section-head .section-desc{margin-left:auto;margin-right:auto}
/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .3s,box-shadow .3s,border-color .3s}
.site-header.scrolled{background:rgba(255,255,255,.96);box-shadow:0 4px 20px rgba(17,24,32,.06);border-bottom:1px solid var(--border)}
.top-bar{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:14px 24px;transition:padding .3s}
.scrolled .top-bar{padding-top:8px;padding-bottom:8px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:var(--primary);letter-spacing:.02em}
.brand-mark{width:32px;height:32px;background:var(--accent);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:16px;flex-shrink:0}
.top-right{display:flex;align-items:center;gap:16px}
.top-right .phone{font-size:14px;color:var(--muted)}
.top-right .btn-top{padding:8px 18px;border:1px solid var(--primary);border-radius:var(--radius-btn);font-size:14px;font-weight:500;transition:all .2s}
.top-right .btn-top:hover{background:var(--primary);color:#fff}
.channel-nav{border-top:1px solid var(--border);transition:border-color .3s}
.scrolled .channel-nav{border-top-color:transparent}
.nav-list{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;gap:32px;align-items:center}
.channel-nav a{display:inline-block;padding:12px 4px;font-size:15px;font-weight:500;color:var(--text);position:relative;transition:color .2s}
.channel-nav a:hover{color:var(--accent)}
.channel-nav a.active{color:var(--accent)}
.channel-nav a.active::after{content:'';position:absolute;left:0;right:0;bottom:5px;height:2px;background:var(--accent)}
.nav-cta{margin-left:auto;background:var(--accent);color:#fff !important;padding:8px 18px !important;border-radius:var(--radius-btn);font-weight:600 !important;font-size:14px !important;transition:all .2s}
.nav-cta:hover{background:var(--primary);transform:scale(1.02);color:#fff}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--primary);padding:4px}
/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:130px;padding-bottom:40px;background:linear-gradient(90deg,rgba(245,246,248,.97) 0%,rgba(245,246,248,.82) 50%,rgba(245,246,248,.25) 100%),url('/assets/images/backpic/back-1.webp') right center/cover no-repeat}
.hero .content{max-width:680px;position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,90,42,.1);color:var(--accent);border-radius:32px;padding:6px 16px;font-size:14px;font-weight:600}
.hero-badge .dot{width:6px;height:6px;background:var(--accent);border-radius:50%}
.hero h1{font-size:72px;font-weight:800;line-height:1.1;letter-spacing:-.01em;color:var(--primary);margin-top:22px}
.hero h1 .text-accent{color:var(--accent)}
.hero .subtitle{font-size:17px;color:var(--text);margin-top:26px;max-width:480px;line-height:1.8}
.hero .cta-btns{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.hero .scroll-indicator{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;color:var(--muted);font-size:12px;letter-spacing:.18em;gap:8px;z-index:2}
.hero .scroll-indicator .line{width:1px;height:36px;background:var(--border);position:relative;overflow:hidden}
.hero .scroll-indicator .line::after{content:'';position:absolute;left:0;top:-100%;width:100%;height:100%;background:var(--accent);animation:scrollLine 2s infinite}
@keyframes scrollLine{0%{top:-100%}60%{top:100%}100%{top:100%}}
/* Stats */
.stats{background:var(--card);border-bottom:1px solid var(--border);padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{position:relative;text-align:center;padding:12px 16px}
.stat-item+.stat-item::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:48px;background:var(--border)}
.stat-num{font-size:56px;font-weight:800;color:var(--primary);line-height:1.1;letter-spacing:-.01em}
.stat-item:nth-child(even) .stat-num{color:var(--accent)}
.stat-label{font-size:14px;color:var(--muted);margin-top:8px}
/* Features */
.features{padding:96px 0}
.features-wrap{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.features-intro{position:sticky;top:110px}
.features-intro .intro-text{margin-top:16px;font-size:16px;color:var(--text);line-height:1.8;max-width:420px}
.features-intro .btn-primary{margin-top:28px}
.features-list{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-col{display:flex;flex-direction:column;gap:24px}
.feature-col--offset{padding-top:48px}
.feature-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .3s,box-shadow .3s,border-color .3s}
.feature-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary)}
.feature-num{display:inline-flex;width:34px;height:34px;background:rgba(255,90,42,.12);color:var(--accent);font-weight:800;font-size:14px;border-radius:6px;align-items:center;justify-content:center}
.feature-item h3{font-size:20px;font-weight:600;color:var(--primary);margin-top:16px}
.feature-item p{font-size:14px;color:var(--text);margin-top:8px;line-height:1.7}
/* News */
.news-section{padding:96px 0;background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.news-list{max-width:840px;margin:0 auto}
.news-item{display:flex;gap:28px;padding:28px 8px;border-bottom:1px solid var(--border);align-items:center;transition:background .2s}
.news-item:hover{background:rgba(245,246,248,.4)}
.news-item:hover .news-title{color:var(--accent)}
.news-date{width:76px;display:flex;flex-direction:column;align-items:center;justify-content:center;border-right:2px solid var(--border);padding-right:28px;flex-shrink:0}
.news-date strong{font-size:32px;font-weight:800;color:var(--primary);line-height:1}
.news-date span{font-size:13px;color:var(--muted);margin-top:4px}
.news-content{flex:1;min-width:0}
.news-meta{display:flex;gap:14px;align-items:center;margin-bottom:6px}
.news-tag{background:rgba(255,90,42,.08);color:var(--accent);font-size:13px;padding:2px 14px;border-radius:var(--radius-tag)}
.news-meta time{font-size:13px;color:var(--muted)}
.news-title{font-size:20px;font-weight:600;color:var(--primary);transition:color .2s;line-height:1.4}
.news-summary{font-size:15px;color:var(--text);margin-top:6px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-arrow{flex-shrink:0;font-size:24px;color:var(--muted);transition:transform .2s,color .2s}
.news-item:hover .news-arrow{transform:translateX(6px);color:var(--accent)}
.cms-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:64px 24px;border:1px dashed #cbd5e1;border-radius:8px;color:var(--muted);text-align:center}
.cms-empty svg{width:44px;height:44px;margin-bottom:12px;stroke:#9ca3af;fill:none;stroke-width:1.5}
.cms-empty p{font-size:15px}
/* Showcase */
.showcase{padding:96px 0}
.showcase-grid{display:grid;grid-template-columns:3fr 2fr;gap:24px;align-items:stretch}
.case-card{display:block;background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary)}
.case-card:hover img{transform:scale(1.05)}
.case-thumb{overflow:hidden;aspect-ratio:16/10}
.case-card--large .case-thumb{aspect-ratio:16/11}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-info{padding:24px}
.case-cat{font-size:12px;color:var(--accent);background:rgba(255,90,42,.08);padding:2px 12px;border-radius:var(--radius-tag)}
.case-info h3{font-size:20px;font-weight:600;color:var(--primary);margin-top:10px}
.case-info p{font-size:14px;color:var(--text);margin-top:8px;line-height:1.7}
.case-more{display:inline-block;margin-top:12px;font-size:14px;color:var(--accent);font-weight:500;transition:letter-spacing .2s}
.case-card:hover .case-more{letter-spacing:.02em}
.showcase-col{display:flex;flex-direction:column;gap:24px}
/* Pricing */
.pricing{padding:96px 0;background:var(--primary);color:#fff}
.pricing .section-title{color:#fff}
.pricing .section-desc{color:#9ca3af;margin-left:auto;margin-right:auto}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;max-width:1200px;margin:0 auto}
.price-card{background:var(--card);color:var(--text);padding:40px 32px;border-radius:var(--radius);position:relative;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s}
.price-card:hover{transform:translateY(-4px);box-shadow:0 20px 48px rgba(0,0,0,.2)}
.price-card.featured{background:#1a2230;color:#fff;transform:scale(1.04);padding:48px 36px;border:2px solid rgba(255,255,255,.08)}
.price-card.featured:hover{transform:scale(1.04) translateY(-4px)}
.price-badge{position:absolute;top:-10px;right:24px;background:var(--success);color:#fff;font-size:13px;padding:2px 16px;border-radius:var(--radius-tag)}
.price-card h3{font-size:20px;font-weight:700;color:var(--primary)}
.price-card.featured h3{color:#fff}
.price-amount{font-size:48px;font-weight:800;color:var(--primary);margin-top:14px;line-height:1.2}
.price-card.featured .price-amount{color:var(--accent)}
.price-amount .price-unit{font-size:14px;color:var(--muted);font-weight:400;margin-left:4px}
.price-card.featured .price-amount .price-unit{color:#9ca3af}
.price-list{margin:24px 0 28px;flex:1}
.price-list li{position:relative;padding-left:28px;font-size:14px;margin-bottom:12px;color:inherit;line-height:1.6}
.price-list li::before{content:'✓';position:absolute;left:0;color:var(--accent);font-weight:700}
.btn-price{display:block;text-align:center;border:1px solid var(--primary);color:var(--primary);padding:12px 24px;border-radius:var(--radius-btn);font-weight:600;transition:all .2s;background:transparent;cursor:pointer}
.btn-price:hover{background:var(--primary);color:#fff}
.price-card.featured .btn-price{background:var(--accent);border-color:var(--accent);color:#fff}
.price-card.featured .btn-price:hover{background:#fff;color:var(--primary);border-color:#fff}
/* FAQ */
.faq{padding:96px 0;background:var(--card)}
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;max-width:1200px;margin:0 auto}
.faq-intro{position:sticky;top:110px}
.faq-intro .section-desc{margin-top:16px}
.faq-intro .btn-primary{margin-top:28px}
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:24px 8px;font-size:18px;font-weight:600;color:var(--primary);cursor:pointer;transition:color .2s;user-select:none}
.faq-question:hover{color:var(--accent)}
.faq-toggle{position:relative;width:20px;height:20px;flex-shrink:0}
.faq-toggle::before,.faq-toggle::after{content:'';position:absolute;background:var(--accent);border-radius:2px;transition:transform .3s cubic-bezier(.4,0,.2,1)}
.faq-toggle::before{left:0;right:0;top:9px;height:2px}
.faq-toggle::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.open .faq-toggle::after{transform:rotate(90deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.4,0,.2,1)}
.faq-answer-inner{padding:0 28px 24px;font-size:15px;color:var(--text);line-height:1.8}
/* CTA */
.cta-section{padding:96px 0;background:var(--primary);color:#fff}
.cta-wrap{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;max-width:1200px;margin:0 auto}
.cta-copy .section-title{color:#fff}
.cta-copy .section-desc{color:#9ca3af;margin-top:16px}
.cta-points{list-style:none;margin-top:24px}
.cta-points li{position:relative;padding-left:28px;color:#cbd5e1;font-size:15px;margin-bottom:12px}
.cta-points li::before{content:'✓';position:absolute;left:0;color:var(--accent);font-weight:700}
.cta-phone{display:inline-block;margin-top:28px;border:1px solid rgba(255,255,255,.3);color:#fff;padding:12px 28px;border-radius:var(--radius-btn);font-weight:500;transition:all .2s}
.cta-phone:hover{background:#fff;color:var(--primary)}
.contact-form{background:#fff;border-radius:12px;padding:36px;color:var(--text);box-shadow:0 24px 60px rgba(0,0,0,.25)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;height:48px;border:1px solid #d1d5db;border-radius:var(--radius-btn);padding:0 16px;background:#fff;font-size:15px;transition:border-color .2s,box-shadow .2s}
.form-group textarea{height:auto;padding:12px 16px;resize:vertical;min-height:90px}
.form-group input:focus,.form-group textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,90,42,.15)}
.btn-submit{width:100%;height:48px;background:var(--accent);color:#fff;border-radius:var(--radius-btn);font-weight:600;font-size:16px;cursor:pointer;transition:all .2s;border:none}
.btn-submit:hover{background:var(--primary)}
.btn-submit:active{transform:scale(.98)}
.form-success{display:none;margin-top:16px;padding:12px 16px;background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.3);color:#047857;border-radius:var(--radius-btn);font-size:14px;text-align:center}
.form-note{text-align:center;font-size:12px;color:var(--muted);margin-top:14px}
/* Footer */
.site-footer{background:var(--primary);color:#fff;padding-top:64px}
.footer-top{padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{font-size:32px;font-weight:800;color:#fff}
.footer-slogan{color:#9ca3af;margin-top:8px;font-size:15px}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;padding:40px 0 48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-col a,.footer-col span{display:block;color:#9ca3af;font-size:14px;padding:4px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{padding:18px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;color:#9ca3af;font-size:12px}
/* Floating CTA */
.floating-cta{position:fixed;right:24px;bottom:24px;z-index:99;background:var(--accent);color:#fff;padding:13px 24px;border-radius:32px;font-weight:600;font-size:15px;box-shadow:0 8px 24px rgba(255,90,42,.35);display:inline-flex;align-items:center;gap:8px;text-decoration:none;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s,transform .3s,background .2s}
.floating-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.floating-cta:hover{background:var(--primary);color:#fff}
.floating-cta svg{width:18px;height:18px}
/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease-out,transform .6s ease-out}
.reveal.in-view{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .news-item,.case-card,.btn-primary,.btn-secondary{transition:none}
  .hero .scroll-indicator .line::after{animation:none}
}
/* Tablet */
@media(max-width:1023px){
  .hero h1{font-size:56px}
  .features-wrap{grid-template-columns:1fr;gap:40px}
  .features-intro{position:static}
  .features-intro .btn-primary{display:none}
  .faq-wrap{grid-template-columns:1fr;gap:40px}
  .faq-intro{position:static}
  .showcase-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr;max-width:520px}
  .price-card.featured{transform:scale(1)}
  .price-card.featured:hover{transform:translateY(-4px)}
  .cta-wrap{grid-template-columns:1fr;gap:48px}
  .section-title{font-size:36px}
}
/* Mobile */
@media(max-width:767px){
  .container{padding:0 16px}
  .top-bar{padding:12px 16px}
  .brand{font-size:18px}
  .brand-mark{width:28px;height:28px;font-size:14px;border-radius:6px}
  .top-right .phone{display:none}
  .top-right .btn-top{display:none}
  .menu-toggle{display:inline-flex}
  .channel-nav{display:none;position:fixed;top:54px;left:0;right:0;background:#fff;padding:16px;border-bottom:1px solid var(--border);box-shadow:0 12px 32px rgba(17,24,32,.08);max-height:calc(100vh - 54px);overflow-y:auto}
  .channel-nav.open{display:block}
  .nav-list{flex-direction:column;gap:0;padding:0}
  .channel-nav a{display:block;padding:14px 8px;border-bottom:1px dashed var(--border);font-size:16px}
  .channel-nav a.active::after{display:none}
  .channel-nav a.active{color:var(--accent);background:rgba(255,90,42,.04);border-radius:6px}
  .nav-cta{margin:16px 0 0;text-align:center;display:block;padding:12px !important}
  .hero{min-height:calc(100vh - 54px);padding-top:90px;background:linear-gradient(180deg,rgba(245,246,248,.94) 0%,rgba(245,246,248,.72) 60%,rgba(245,246,248,.2) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
  .hero h1{font-size:38px;line-height:1.15}
  .hero .subtitle{font-size:15px}
  .hero .cta-btns{gap:12px}
  .hero .cta-btns .btn-primary,.hero .cta-btns .btn-secondary{padding:12px 20px;font-size:14px;flex:1;text-align:center}
  .stats{padding:40px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:16px 8px}
  .stat-item+.stat-item::before{display:none}
  .stat-item:nth-child(even){border-left:1px solid var(--border)}
  .stat-item:nth-child(-n+2){border-bottom:1px solid var(--border)}
  .stat-num{font-size:40px}
  .features{padding:50px 0}
  .features-list{grid-template-columns:1fr;gap:16px}
  .feature-col--offset{padding-top:0}
  .feature-item{padding:20px}
  .news-section{padding:50px 0}
  .news-list{padding:0 4px}
  .news-item{flex-direction:column;gap:14px;align-items:flex-start}
  .news-date{width:auto;border-right:none;padding-right:0;flex-direction:row;gap:8px}
  .news-date strong{font-size:20px}
  .news-date span{margin-top:0;font-size:12px}
  .showcase{padding:50px 0}
  .case-info{padding:16px}
  .case-info h3{font-size:18px}
  .case-info p{font-size:13px}
  .showcase-col{gap:16px}
  .pricing{padding:50px 0}
  .pricing-grid{padding:0 4px;max-width:100%}
  .price-card{padding:28px 20px}
  .price-card.featured{padding:32px 20px}
  .faq{padding:50px 0}
  .faq-question{font-size:16px;line-height:1.4}
  .faq-answer-inner{padding:0 8px 20px;font-size:14px}
  .cta-section{padding:50px 0}
  .cta-wrap{gap:32px}
  .contact-form{padding:24px 16px}
  .footer-cols{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
  .floating-cta{width:48px;height:48px;border-radius:50%;padding:0;justify-content:center;font-size:0}
  .floating-cta svg{width:20px;height:20px}
}

/* roulang page: category1 */
:root {
  --primary: #111820;
  --accent: #FF5A2A;
  --bg: #F5F6F8;
  --card: #FFFFFF;
  --text: #4B5563;
  --text-light: #6B7280;
  --border: #E5E7EB;
  --success: #10B981;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 12px 32px rgba(17, 24, 32, 0.08);
  --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container: 1200px;
  --spacing-desktop: 96px;
  --spacing-tablet: 72px;
  --spacing-mobile: 50px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { scroll-margin-top: 80px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s, color 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--primary); border-color: var(--primary); transform: scale(1.02); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 16px; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }
.header-top { border-bottom: 1px solid rgba(0,0,0,0.04); }
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand-logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.01em;
}
.brand-logo .dot { color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 16px; }
.header-tel { font-size: 15px; font-weight: 600; color: var(--primary); }
.header-tel:hover { color: var(--accent); }
.channel-nav {
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid rgba(0,0,0,0.04);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 48px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.nav-list a {
  position: relative;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  line-height: 48px;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-list a:hover { color: var(--accent); }
.nav-list a.active { color: var(--primary); font-weight: 600; }
.nav-list a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 18px;
  right: 18px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
}
.nav-list a.nav-cta {
  margin-left: auto;
  background: var(--accent);
  color: #fff;
  line-height: 32px;
  padding: 0 20px;
  border-radius: 20px;
  font-weight: 600;
  margin-top: 8px;
  margin-bottom: 8px;
  transition: background 0.2s;
}
.nav-list a.nav-cta:hover { background: var(--primary); color: #fff; }
.menu-toggle { display: none; }

/* Mobile menu */
@media (max-width: 767px) {
  .menu-toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
  }
  .menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: all 0.3s;
  }
  .menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .header-top-inner { height: 56px; }
  .brand-logo { font-size: 20px; }
  .header-tel, .header-right .btn-sm { display: none; }
  .channel-nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--card);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .channel-nav.open { max-height: 340px; border-bottom: 1px solid var(--border); }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    height: auto;
    padding: 12px 24px 20px;
    gap: 0;
  }
  .nav-list a {
    display: block;
    width: 100%;
    line-height: 44px;
    font-size: 16px;
    border-bottom: 1px solid rgba(0,0,0,0.03);
  }
  .nav-list a.active::after { display: none; }
  .nav-list a.active { color: var(--accent); }
  .nav-list a.nav-cta {
    margin: 12px 0 0;
    line-height: 40px;
    text-align: center;
    border-radius: var(--radius-sm);
  }
}

/* ===== Page Hero ===== */
.cat-hero {
  position: relative;
  min-height: 460px;
  display: flex;
  align-items: center;
  background: linear-gradient(100deg, #111820 0%, #1a2330 45%, rgba(17,24,32,0.35) 100%), url('/assets/images/backpic/back-1.webp') no-repeat center right / cover;
  color: #fff;
  overflow: hidden;
}
.cat-hero-content { position: relative; z-index: 2; padding: 80px 0; }
.cat-hero .tagline {
  display: inline-block;
  background: rgba(255,90,42,0.25);
  color: #ffb39a;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 24px;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
.cat-hero h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: #fff;
}
.cat-hero p.subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.cat-hero .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cat-hero .btn-primary { border-color: var(--accent); }
.cat-hero .btn-primary:hover { background: #fff; color: var(--primary); border-color: #fff; }
.cat-hero .btn-outline { border-color: rgba(255,255,255,0.6); color: #fff; }
.cat-hero .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.cat-hero .scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.cat-hero .scroll-hint::before {
  content: '';
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,0.3);
}

/* ===== Data Strip ===== */
.data-strip { background: var(--card); border-bottom: 1px solid var(--border); }
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 40px 0;
}
.data-item { text-align: center; position: relative; }
.data-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 48px;
  background: var(--border);
}
.data-item .num {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--primary);
  letter-spacing: -0.02em;
}
.data-item .num.accent { color: var(--accent); }
.data-item .label { font-size: 13px; color: var(--text-light); margin-top: 4px; }

/* ===== Section Base ===== */
.section { padding: var(--spacing-desktop) 0; }
.section-header { margin-bottom: 48px; }
.section-header .sec-tag {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 8px;
}
.section-header h2 {
  font-size: 40px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.section-header p {
  font-size: 15px;
  color: var(--text-light);
  max-width: 560px;
  margin-top: 10px;
}

/* ===== Training Programs ===== */
.programs-wrap {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
}
.programs-left .sticky-head { position: sticky; top: 120px; }
.programs-right { display: flex; flex-direction: column; gap: 36px; }
.program-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  padding: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.program-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.program-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  padding-top: 4px;
}
.program-item h3 { font-size: 22px; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.program-item h3 a:hover { color: var(--accent); }
.program-item p { font-size: 15px; color: var(--text); line-height: 1.7; }
.program-item .tag-row { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.tag {
  display: inline-block;
  padding: 3px 14px;
  border-radius: 24px;
  font-size: 12px;
  font-weight: 500;
  background: #F0F1F3;
  color: var(--text);
}
.tag.orange { background: rgba(255,90,42,0.1); color: var(--accent); }

/* ===== Training System / Process ===== */
.system-section { background: var(--primary); color: #fff; }
.system-section .section-header h2 { color: #fff; }
.system-section .section-header .sec-tag { color: #ffb39a; }
.system-section .section-header p { color: rgba(255,255,255,0.7); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: step;
}
.process-item {
  position: relative;
  padding: 32px 24px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  transition: border-color 0.3s, transform 0.3s;
}
.process-item:hover { border-color: rgba(255,255,255,0.35); transform: translateY(-4px); }
.process-step {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: block;
}
.process-item h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.process-item p { font-size: 14px; color: rgba(255,255,255,0.7); line-height: 1.7; }

/* ===== Cases ===== */
.cases-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: 1fr 1fr;
  gap: 20px;
}
.case-large {
  grid-row: 1 / 3;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}
.case-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 220px;
}
.case-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-item:hover img { transform: scale(1.05); }
.case-mask {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 24px;
  background: linear-gradient(0deg, rgba(17,24,32,0.85) 0%, rgba(17,24,32,0.2) 100%);
  color: #fff;
}
.case-mask h3 { font-size: 18px; font-weight: 600; }
.case-mask p { font-size: 13px; color: rgba(255,255,255,0.8); margin-top: 2px; }

/* ===== Coach Team ===== */
.coach-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.coach-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.coach-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow); }
.coach-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--bg);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  border: 2px solid rgba(255,90,42,0.15);
}
.coach-card h3 { font-size: 18px; color: var(--primary); font-weight: 600; }
.coach-card .role { font-size: 13px; color: var(--text-light); margin-top: 2px; }
.coach-card p { font-size: 13px; color: var(--text); margin-top: 8px; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-wrap {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: background 0.2s;
}
.faq-icon::before { width: 14px; height: 2px; top: 11px; left: 5px; }
.faq-icon::after { width: 2px; height: 14px; top: 5px; left: 11px; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4,0,0.2,1);
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 0 20px; font-size: 15px; color: var(--text); line-height: 1.8; }

/* ===== CTA / Form ===== */
.cta-section { background: var(--primary); color: #fff; }
.cta-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.cta-left h2 { font-size: 40px; font-weight: 700; line-height: 1.3; color: #fff; }
.cta-left h2 span { color: var(--accent); }
.cta-left p { font-size: 15px; color: rgba(255,255,255,0.7); margin-top: 16px; line-height: 1.8; }
.cta-left .cta-contacts { margin-top: 28px; display: flex; flex-direction: column; gap: 10px; }
.cta-left .cta-contacts a { color: rgba(255,255,255,0.9); font-size: 16px; font-weight: 500; }
.cta-left .cta-contacts a:hover { color: var(--accent); }
.cta-form { background: var(--card); border-radius: var(--radius); padding: 36px; }
.cta-form h3 { font-size: 22px; color: var(--primary); font-weight: 600; margin-bottom: 6px; }
.cta-form > p { font-size: 14px; color: var(--text-light); margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--primary); margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid #D1D5DB;
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 15px;
  color: var(--primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group textarea { height: 96px; padding: 12px 14px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,90,42,0.15);
}
.cta-form .btn-primary { width: 100%; height: 48px; font-size: 16px; }
.cta-form .form-note { font-size: 12px; color: var(--text-light); text-align: center; margin-top: 12px; }

/* ===== Float CTA ===== */
.float-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  background: var(--accent);
  color: #fff;
  padding: 14px 24px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(255,90,42,0.35);
  z-index: 998;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s, background 0.3s;
  white-space: nowrap;
}
.float-cta.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.float-cta:hover { background: var(--primary); }
@media (max-width: 767px) {
  .float-cta { width: 56px; height: 56px; padding: 0; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0; right: 16px; bottom: 16px; }
  .float-cta::after { content: '✦'; font-size: 22px; }
}

/* ===== Footer ===== */
.site-footer { background: var(--primary); color: rgba(255,255,255,0.85); padding: 72px 0 32px; }
.footer-top { display: flex; align-items: center; gap: 24px; margin-bottom: 48px; flex-wrap: wrap; }
.footer-brand { font-size: 32px; font-weight: 800; color: #fff; }
.footer-brand .dot { color: var(--accent); }
.footer-slogan { font-size: 15px; color: rgba(255,255,255,0.6); }
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}
.footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.65); padding: 4px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-col span { display: block; font-size: 14px; color: rgba(255,255,255,0.5); padding: 4px 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: #9CA3AF;
}

/* ===== Scroll animate ===== */
.animate { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.animate.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .section { padding: 72px 0; }
  .programs-wrap { gap: 40px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr 1fr; }
  .case-large { grid-row: span 1; }
  .coach-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-wrap { grid-template-columns: 1fr; gap: 32px; }
  .cta-wrap { grid-template-columns: 1fr; gap: 40px; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .data-item:nth-child(2)::after { display: none; }
  .data-item:nth-child(1)::after, .data-item:nth-child(3)::after { display: block; }
  .data-item:nth-child(3)::after, .data-item:nth-child(4)::after { top: auto; bottom: -20px; }
  .data-item { padding: 16px 0; }
  .cat-hero h1 { font-size: 48px; }
}
@media (max-width: 767px) {
  .section { padding: 50px 0; }
  .container { padding: 0 16px; }
  .programs-wrap { grid-template-columns: 1fr; gap: 24px; }
  .programs-left .sticky-head { position: static; }
  .program-item { grid-template-columns: 48px 1fr; gap: 16px; padding: 20px; }
  .program-num { font-size: 28px; }
  .process-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .case-large { min-height: 200px; }
  .case-item { min-height: 160px; }
  .coach-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { flex-direction: column; align-items: flex-start; gap: 12px; }
  .cat-hero { min-height: 380px; }
  .cat-hero-content { padding: 56px 0 70px; }
  .cat-hero h1 { font-size: 38px; }
  .cat-hero p.subtitle { font-size: 15px; }
  .section-header h2 { font-size: 30px; }
  .cta-wrap h2 { font-size: 30px; }
  .cta-form { padding: 24px; }
}
@media (max-width: 520px) {
  .data-grid { grid-template-columns: 1fr 1fr; }
  .data-item .num { font-size: 40px; }
  .btn-lg { padding: 14px 28px; font-size: 15px; }
}

/* roulang page: article */
:root {
            --primary: #111820;
            --accent: #FF5A2A;
            --bg: #F5F6F8;
            --card-bg: #FFFFFF;
            --text: #4B5563;
            --text-light: #6B7280;
            --border: #E5E7EB;
            --success: #10B981;
            --radius: 8px;
            --radius-btn: 4px;
            --radius-tag: 24px;
            --shadow-hover: 0 12px 32px rgba(17, 24, 32, 0.08);
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container: 1200px;
            --header-h: 64px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style-position: inside;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            line-height: 1;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: all .2s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.02);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.02);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-block {
            width: 100%;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .header-top {
            background: rgba(255, 255, 255, 0.96);
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .logo-mark {
            width: 28px;
            height: 28px;
            background: var(--accent);
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 13px;
            font-weight: 800;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-contact {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
        }
        .header-contact a:hover {
            color: var(--accent);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-btn);
        }
        .hamburger span {
            display: block;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .channel-nav {
            border-top: 1px solid var(--border);
            background: #fff;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-list::-webkit-scrollbar {
            display: none;
        }
        .nav-list a {
            display: inline-block;
            padding: 13px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 3px solid transparent;
            transition: all .2s ease;
            white-space: nowrap;
            line-height: 1.4;
        }
        .nav-list a:hover {
            color: var(--primary);
            border-bottom-color: var(--accent);
        }
        .nav-list a.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--accent);
        }
        .nav-list .nav-cta {
            margin-left: auto;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            border-bottom: none;
            padding: 8px 16px;
            margin-top: 3px;
            margin-bottom: 3px;
            font-weight: 600;
            font-size: 13px;
        }
        .nav-list .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.02);
        }
        .breadcrumb-wrap {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            font-size: 13px;
            color: var(--text-light);
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb-sep {
            color: #c0c4cc;
        }
        .breadcrumb-current {
            color: var(--text);
            font-weight: 500;
            max-width: 380px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .article-wrap {
            padding: 48px 0 24px;
        }
        .article-layout {
            max-width: 900px;
            margin: 0 auto;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 48px 56px 40px;
            transition: box-shadow .3s ease;
        }
        .article-layout:hover {
            box-shadow: var(--shadow-hover);
        }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--primary);
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
        }
        .meta-sep {
            color: #d0d3d9;
        }
        .meta-category {
            display: inline-block;
            background: rgba(255, 90, 42, 0.08);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-tag);
        }
        .article-content {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            word-wrap: break-word;
        }
        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 16px;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .article-content p {
            margin: 0 0 20px;
        }
        .article-content a {
            color: var(--accent);
            border-bottom: 1px solid rgba(255, 90, 42, 0.3);
        }
        .article-content a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(255, 90, 42, 0.04);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
            color: var(--primary);
            font-size: 15px;
            line-height: 1.7;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
            width: 100%;
            height: auto;
        }
        .article-content figure {
            margin: 24px 0;
        }
        .article-content figure img {
            margin: 0 0 8px;
        }
        .article-content figcaption {
            font-size: 13px;
            color: var(--text-light);
            text-align: center;
            line-height: 1.5;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px;
            padding-left: 4px;
            list-style-position: outside;
        }
        .article-content li {
            margin-bottom: 6px;
            line-height: 1.7;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content table th {
            background: var(--bg);
            font-weight: 600;
            color: var(--primary);
        }
        .article-content code {
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-family: "SF Mono", Consolas, monospace;
        }
        .article-not-found {
            text-align: center;
            padding: 60px 20px 40px;
        }
        .article-not-found-icon {
            font-size: 48px;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .article-not-found p {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 24px;
        }
        .article-actions {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tag {
            font-size: 12px;
            color: var(--text);
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            transition: all .2s;
        }
        .article-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-light);
        }
        .article-share a {
            display: inline-block;
            padding: 4px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-tag);
            font-size: 12px;
            color: var(--text);
            transition: all .2s;
        }
        .article-share a:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .related-section {
            padding: 64px 0;
        }
        .related-head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 32px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 16px;
        }
        .related-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
        }
        .related-head .more-link {
            font-size: 14px;
            color: var(--text-light);
            transition: color .2s;
        }
        .related-head .more-link:hover {
            color: var(--accent);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card .card-tag {
            align-self: flex-start;
            font-size: 12px;
            color: var(--accent);
            background: rgba(255, 90, 42, 0.08);
            padding: 3px 12px;
            border-radius: var(--radius-tag);
            font-weight: 500;
            margin-bottom: 12px;
        }
        .related-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: color .2s;
        }
        .related-card:hover .card-title {
            color: var(--accent);
        }
        .related-card .card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .related-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent);
            transition: gap .2s;
        }
        .related-card .card-link:hover {
            gap: 10px;
        }
        .back-home-wrap {
            padding: 0 0 48px;
            text-align: center;
        }
        .back-home-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 10px 24px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: var(--card-bg);
            transition: all .2s;
        }
        .back-home-link:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }
        .cta-section {
            background: var(--primary);
            padding: 72px 0 64px;
            margin-top: 16px;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-info h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }
        .cta-info p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            max-width: 420px;
        }
        .cta-form {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .cta-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            height: 48px;
            border: 1px solid #D1D5DB;
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 14px;
            color: var(--primary);
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(255, 90, 42, 0.15);
            outline: none;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: #9CA3AF;
        }
        .cta-form textarea {
            height: auto;
            padding: 12px 14px;
            resize: vertical;
            min-height: 80px;
        }
        .cta-form button {
            height: 48px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s, transform .2s;
        }
        .cta-form button:hover {
            background: var(--primary);
            transform: scale(1.02);
        }
        .cta-form button:disabled {
            background: #9CA3AF;
            cursor: not-allowed;
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .footer-top {
            display: flex;
            align-items: center;
            gap: 20px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            flex-wrap: wrap;
        }
        .footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .footer-slogan {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-cols {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            padding: 40px 0 32px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col a,
        .footer-col span {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
            transition: color .2s;
            line-height: 1.6;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: #9CA3AF;
        }
        .float-cta {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 20px;
            border-radius: var(--radius-tag);
            box-shadow: 0 8px 24px rgba(255, 90, 42, 0.35);
            transition: transform .2s, background .2s;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
        }
        .float-cta.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .float-cta:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }
        .float-cta .fc-text {
            font-size: 14px;
        }
        @media (max-width: 1023px) {
            .article-layout {
                padding: 32px 28px;
            }
            .article-title {
                font-size: 30px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-card:last-child {
                grid-column: 1 / -1;
                max-width: 480px;
                margin: 0 auto;
                width: 100%;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-cols {
                grid-template-columns: 1fr 1fr;
            }
            .footer-col:last-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .header-top-inner {
                height: 56px;
            }
            .logo {
                font-size: 17px;
            }
            .logo-mark {
                width: 24px;
                height: 24px;
                font-size: 11px;
            }
            .header-contact {
                display: none;
            }
            .header-right .btn-outline {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .channel-nav {
                display: none;
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                overflow-y: auto;
                max-height: calc(100vh - 56px);
            }
            .channel-nav.nav-open {
                display: block;
            }
            .nav-list {
                flex-direction: column;
                align-items: stretch;
                padding: 8px 0;
            }
            .nav-list a {
                padding: 14px 20px;
                font-size: 15px;
                border-bottom: 1px solid rgba(0, 0, 0, 0.04);
                border-left: 3px solid transparent;
            }
            .nav-list a:hover,
            .nav-list a.active {
                border-left-color: var(--accent);
                border-bottom-color: rgba(0, 0, 0, 0.04);
                background: rgba(255, 90, 42, 0.04);
            }
            .nav-list .nav-cta {
                margin: 12px 16px;
                text-align: center;
            }
            .breadcrumb-wrap {
                padding: 8px 0;
            }
            .breadcrumb {
                font-size: 12px;
                gap: 6px;
            }
            .breadcrumb-current {
                max-width: 180px;
            }
            .article-wrap {
                padding: 24px 0 0;
            }
            .article-layout {
                border-radius: 0;
                border-left: none;
                border-right: none;
                border-top: none;
                padding: 24px 16px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-meta {
                gap: 8px;
                font-size: 12px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 19px;
            }
            .article-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-share {
                flex-wrap: wrap;
            }
            .related-section {
                padding: 40px 0;
            }
            .related-head h2 {
                font-size: 22px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card:last-child {
                grid-column: auto;
                max-width: none;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-info h2 {
                font-size: 26px;
            }
            .cta-form {
                padding: 20px 16px;
            }
            .cta-form .form-row {
                grid-template-columns: 1fr;
            }
            .footer-cols {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px 0;
            }
            .footer-col:last-child {
                grid-column: auto;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 16px 0;
            }
            .footer-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding-bottom: 24px;
            }
            .float-cta {
                right: 16px;
                bottom: 16px;
                width: 48px;
                height: 48px;
                border-radius: 50%;
                padding: 0;
                justify-content: center;
            }
            .float-cta .fc-text {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .article-title {
                font-size: 22px;
            }
            .article-layout {
                padding: 20px 14px;
            }
            .article-content {
                font-size: 14.5px;
            }
            .article-content blockquote {
                padding: 12px 16px;
            }
            .related-card .card-body {
                padding: 16px;
            }
        }

/* roulang page: category2 */
:root {
      --primary: #111820;
      --accent: #FF5A2A;
      --bg: #F5F6F8;
      --card: #FFFFFF;
      --text: #4B5563;
      --text-light: #6B7280;
      --border: #E5E7EB;
      --success: #10B981;
      --radius: 8px;
      --radius-btn: 4px;
      --shadow-hover: 0 12px 32px rgba(17, 24, 32, 0.08);
      --shadow-cta: 0 8px 24px rgba(255, 90, 42, 0.35);
      --container: 1200px;
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color .2s ease;
    }

    ul {
      list-style: none;
    }

    button,
    input {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
    }

    .container {
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 24px;
    }

    section {
      scroll-margin-top: 80px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      padding: 0 32px;
      border-radius: var(--radius-btn);
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      box-shadow: var(--shadow-cta);
    }
    .btn-primary:hover {
      background: var(--primary);
      color: #fff;
      transform: scale(1.02);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: scale(1.02);
    }

    .section-heading {
      max-width: 760px;
      margin-bottom: 48px;
    }

    .section-heading h2 {
      font-size: clamp(30px, 4vw, 42px);
      font-weight: 700;
      letter-spacing: -0.01em;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 16px;
    }

    .section-heading p {
      font-size: 16px;
      color: var(--text-light);
    }

    /* ========== Header ========== */
    .site-header {
      position: relative;
      z-index: 1000;
      background: #fff;
      border-bottom: 1px solid var(--border);
    }

    .header-top {
      background: #fff;
      overflow: hidden;
      transition: height .25s ease, opacity .25s ease;
    }

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

    .brand-logo {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.01em;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .brand-logo .logo-mark {
      width: 28px;
      height: 28px;
      background: var(--accent);
      border-radius: 6px;
      display: inline-block;
      position: relative;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .header-phone {
      font-size: 14px;
      color: var(--text-light);
      font-weight: 500;
    }

    .header-phone:hover {
      color: var(--accent);
    }

    .btn-header {
      height: 38px;
      padding: 0 22px;
      font-size: 14px;
    }

    .channel-nav {
      background: #fff;
      border-top: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 999;
    }

    .site-header.scrolled .header-top {
      height: 0;
      opacity: 0;
    }

    .site-header.scrolled .channel-nav {
      border-top: none;
      box-shadow: 0 4px 16px rgba(17, 24, 32, 0.06);
    }

    .nav-list {
      display: flex;
      align-items: center;
      gap: 8px;
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 24px;
      height: 56px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .nav-list::-webkit-scrollbar {
      display: none;
    }

    .nav-list a {
      position: relative;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      padding: 6px 14px;
      border-radius: 24px;
      transition: color .2s ease, background .2s ease;
      white-space: nowrap;
    }

    .nav-list a:hover {
      color: var(--accent);
      background: rgba(255, 90, 42, 0.08);
    }

    .nav-list a.active {
      color: var(--accent);
      background: rgba(255, 90, 42, 0.12);
      font-weight: 600;
    }

    .nav-list .nav-cta {
      margin-left: auto;
      background: var(--primary);
      color: #fff;
      padding: 8px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
    }

    .nav-list .nav-cta:hover {
      background: var(--accent);
      color: #fff;
    }

    /* Mobile menu */
    .menu-toggle {
      display: none;
    }

    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0;
      background: #fff;
      z-index: 2000;
      padding: 32px 24px;
      flex-direction: column;
      gap: 8px;
    }

    .mobile-menu.open {
      display: flex;
    }

    .mobile-menu a {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
      padding: 16px 0;
      border-bottom: 1px solid var(--border);
    }

    .mobile-menu a.active {
      color: var(--accent);
    }

    .mobile-menu-close {
      align-self: flex-end;
      font-size: 28px;
      background: none;
      cursor: pointer;
      color: var(--primary);
    }

    /* ========== Hero ========== */
    .hero {
      position: relative;
      min-height: 640px;
      display: flex;
      align-items: center;
      background: url('/assets/images/backpic/back-1.webp') no-repeat right center / cover;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, #F5F6F8 0%, rgba(245, 246, 248, 0.94) 38%, rgba(245, 246, 248, 0.6) 68%, rgba(245, 246, 248, 0.1) 100%);
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      padding: 100px 0;
    }

    .hero-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--accent);
      background: rgba(255, 90, 42, 0.1);
      padding: 4px 16px;
      border-radius: 24px;
      margin-bottom: 24px;
      text-transform: uppercase;
    }

    .hero h1 {
      font-size: clamp(54px, 8vw, 88px);
      font-weight: 800;
      letter-spacing: -0.01em;
      color: var(--primary);
      line-height: 1.02;
      margin-bottom: 20px;
    }

    .hero-sub {
      max-width: 520px;
      font-size: 17px;
      color: var(--text);
      line-height: 1.8;
      margin-bottom: 36px;
    }

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

    .hero-scroll {
      position: absolute;
      bottom: 32px;
      left: 50%;
      transform: translateX(-50%);
      text-align: center;
      color: var(--text-light);
      font-size: 12px;
      letter-spacing: 0.2em;
      z-index: 2;
    }

    .hero-scroll::before {
      content: '';
      display: block;
      width: 1px;
      height: 32px;
      background: var(--text-light);
      margin: 0 auto 8px;
    }

    /* ========== Stats ========== */
    .stats {
      background: var(--bg);
      padding: 72px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: #fff;
      margin: 0;
    }

    .stat-item {
      padding: 40px 32px;
      text-align: center;
      border-left: 1px solid var(--border);
      position: relative;
    }

    .stat-item:first-child {
      border-left: none;
    }

    .stat-item strong {
      font-size: 56px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      display: inline-block;
      letter-spacing: -0.02em;
    }

    .stat-item:nth-child(2) strong,
    .stat-item:nth-child(4) strong {
      color: var(--accent);
    }

    .stat-item span {
      display: block;
      font-size: 13px;
      color: var(--text-light);
      margin-top: 8px;
    }

    /* ========== Scope ========== */
    .scope {
      padding: 96px 0;
      background: var(--bg);
      position: relative;
    }

    .scope .scope-layout {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 64px;
    }

    .scope-intro h2 {
      font-size: clamp(30px, 4vw, 42px);
      font-weight: 700;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }

    .scope-intro p {
      color: var(--text-light);
      font-size: 15px;
      margin-bottom: 24px;
    }

    .scope-intro .btn {
      margin-top: 8px;
    }

    .scope-list {
      display: flex;
      flex-direction: column;
    }

    .scope-item {
      display: flex;
      gap: 24px;
      padding: 28px 0;
      border-bottom: 1px solid var(--border);
      transition: background .2s ease;
    }

    .scope-item:first-child {
      padding-top: 0;
    }

    .scope-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .scope-item:hover h3 {
      color: var(--accent);
    }

    .scope-num {
      font-size: 32px;
      font-weight: 800;
      color: transparent;
      -webkit-text-stroke: 1px var(--accent);
      line-height: 1.2;
      min-width: 56px;
      letter-spacing: -0.02em;
    }

    .scope-body h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 8px;
      transition: color .2s ease;
    }

    .scope-body p {
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-light);
    }

    /* ========== Scenarios ========== */
    .scenarios {
      padding: 96px 0;
      background: #fff;
    }

    .scenarios .section-heading {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }

    .scene-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
      margin-bottom: 72px;
    }

    .scene-row:last-child {
      margin-bottom: 0;
    }

    .scene-row.reverse .scene-media {
      order: 2;
    }

    .scene-media {
      border-radius: var(--radius);
      overflow: hidden;
      position: relative;
    }

    .scene-media img {
      width: 100%;
      height: 340px;
      object-fit: cover;
      transition: transform .5s ease;
    }

    .scene-media:hover img {
      transform: scale(1.05);
    }

    .scene-content h3 {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }

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

    .scene-content ul {
      margin: 0;
    }

    .scene-content ul li {
      position: relative;
      padding-left: 24px;
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 10px;
    }

    .scene-content ul li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 10px;
      width: 12px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    /* ========== Process ========== */
    .process {
      background: var(--primary);
      color: #fff;
      padding: 96px 0;
    }

    .process .section-heading h2 {
      color: #fff;
    }

    .process .section-heading p {
      color: rgba(255, 255, 255, 0.6);
    }

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

    .process-step {
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius);
      padding: 32px 28px;
      background: rgba(255, 255, 255, 0.04);
      transition: border-color .2s ease, transform .2s ease;
    }

    .process-step:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
    }

    .process-step span {
      display: inline-block;
      font-size: 14px;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: 0.05em;
      margin-bottom: 20px;
      border: 1px solid rgba(255, 90, 42, 0.3);
      padding: 2px 12px;
      border-radius: 24px;
    }

    .process-step h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 12px;
      color: #fff;
    }

    .process-step p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
      line-height: 1.7;
    }

    /* ========== Cases ========== */
    .cases {
      padding: 96px 0;
      background: var(--bg);
    }

    .case-showcase {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 24px;
    }

    .case-large {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      min-height: 420px;
      display: flex;
      align-items: flex-end;
      border: 1px solid var(--border);
      background: #fff;
    }

    .case-large img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }

    .case-large:hover img {
      transform: scale(1.04);
    }

    .case-large .case-info {
      position: relative;
      z-index: 2;
      padding: 32px;
      background: linear-gradient(0deg, rgba(17, 24, 32, 0.82) 0%, rgba(17, 24, 32, 0) 100%);
      color: #fff;
      width: 100%;
    }

    .case-large h3 {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .case-large p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.75);
    }

    .case-small {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .case-card {
      flex: 1;
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      min-height: 198px;
      border: 1px solid var(--border);
      display: flex;
      align-items: flex-end;
      background: #fff;
    }

    .case-card img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }

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

    .case-card h3 {
      position: relative;
      z-index: 2;
      background: linear-gradient(0deg, rgba(17, 24, 32, 0.78) 0%, rgba(17, 24, 32, 0) 100%);
      width: 100%;
      padding: 20px;
      color: #fff;
      font-size: 17px;
      font-weight: 600;
    }

    /* ========== FAQ ========== */
    .faq {
      padding: 96px 0;
      background: #fff;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: 0.8fr 1.2fr;
      gap: 64px;
    }

    .faq-intro h2 {
      font-size: clamp(30px, 4vw, 42px);
      font-weight: 700;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }

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

    .faq-list {
      border-top: 1px solid var(--border);
    }

    .faq-item {
      border-bottom: 1px solid var(--border);
    }

    .faq-q {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 24px 0;
      background: none;
      font-size: 18px;
      font-weight: 600;
      color: var(--primary);
      cursor: pointer;
      text-align: left;
      transition: color .2s ease;
    }

    .faq-q:hover {
      color: var(--accent);
    }

    .faq-toggle {
      font-size: 28px;
      font-weight: 300;
      color: var(--accent);
      transition: transform .2s ease;
      line-height: 1;
    }

    .faq-item.open .faq-toggle {
      transform: rotate(45deg);
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height .3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .faq-a p {
      padding: 0 0 24px;
      font-size: 15px;
      color: var(--text);
      line-height: 1.8;
    }

    /* ========== CTA ========== */
    .cta {
      background: var(--primary);
      padding: 96px 0;
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .cta::after {
      content: '';
      position: absolute;
      right: -120px;
      top: -120px;
      width: 320px;
      height: 320px;
      border-radius: 50%;
      background: rgba(255, 90, 42, 0.08);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 64px;
      align-items: center;
    }

    .cta-text h2 {
      font-size: clamp(28px, 3.4vw, 40px);
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }

    .cta-text p {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.8;
    }

    .cta-form {
      display: grid;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius);
      padding: 32px;
    }

    .cta-form input {
      height: 48px;
      border-radius: var(--radius-btn);
      border: 1px solid rgba(255, 255, 255, 0.18);
      background: rgba(255, 255, 255, 0.92);
      padding: 0 16px;
      font-size: 15px;
      color: var(--primary);
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    .cta-form input::placeholder {
      color: #9ca3af;
    }

    .cta-form input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(255, 90, 42, 0.25);
    }

    .cta-form .btn {
      width: 100%;
      margin-top: 8px;
    }

    /* ========== Footer ========== */
    .site-footer {
      background: var(--primary);
      color: rgba(255, 255, 255, 0.8);
      padding: 64px 0 32px;
    }

    .footer-top {
      display: flex;
      align-items: baseline;
      gap: 24px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .footer-brand {
      font-size: 32px;
      font-weight: 700;
      color: #fff;
    }

    .footer-slogan {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.6);
    }

    .footer-cols {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: 0.05em;
    }

    .footer-col a,
    .footer-col span {
      display: block;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
      margin-bottom: 10px;
      transition: color .2s ease;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 12px;
      color: #9CA3AF;
    }

    /* ========== Floating CTA ========== */
    .float-cta {
      position: fixed;
      right: 24px;
      bottom: 32px;
      z-index: 1500;
      background: var(--accent);
      color: #fff;
      border: none;
      height: 48px;
      padding: 0 24px;
      border-radius: 48px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      box-shadow: var(--shadow-cta);
      opacity: 0;
      pointer-events: none;
      transition: opacity .3s ease, background .2s ease, transform .2s ease;
    }

    .float-cta.show {
      opacity: 1;
      pointer-events: auto;
    }

    .float-cta:hover {
      background: var(--primary);
      transform: translateY(-2px);
    }

    /* ========== Reveal ========== */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity .6s ease, transform .6s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
      .scope .scope-layout {
        grid-template-columns: 1fr;
        gap: 40px;
      }

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

      .scene-row.reverse .scene-media {
        order: 0;
      }

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

      .case-showcase {
        grid-template-columns: 1fr;
      }

      .case-card {
        min-height: 220px;
      }

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

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

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

      .stat-item:nth-child(3) {
        border-left: none;
        border-top: 1px solid var(--border);
      }

      .stat-item:nth-child(4) {
        border-top: 1px solid var(--border);
      }
    }

    @media (max-width: 767px) {
      .container {
        padding: 0 16px;
      }

      .header-row {
        height: 56px;
      }

      .header-phone {
        display: none;
      }

      .channel-nav {
        display: none;
      }

      .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: none;
        cursor: pointer;
        color: var(--primary);
        font-size: 24px;
      }

      .hero {
        min-height: 520px;
        background: url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
      }

      .hero::before {
        background: linear-gradient(90deg, rgba(245, 246, 248, 0.96) 0%, rgba(245, 246, 248, 0.9) 55%, rgba(245, 246, 248, 0.7) 100%);
      }

      .hero-inner {
        padding: 72px 0;
      }

      .hero h1 {
        font-size: 46px;
      }

      .hero-sub {
        font-size: 15px;
      }

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

      .stat-item {
        padding: 28px 16px;
      }

      .stat-item strong {
        font-size: 38px;
      }

      .scope,
      .scenarios,
      .process,
      .cases,
      .faq,
      .cta {
        padding: 56px 0;
      }

      .scope-item {
        gap: 16px;
        padding: 24px 0;
      }

      .scope-num {
        font-size: 24px;
        min-width: 40px;
      }

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

      .case-large {
        min-height: 300px;
      }

      .case-large .case-info {
        padding: 24px;
      }

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

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

      .float-cta {
        width: 48px;
        height: 48px;
        padding: 0;
        border-radius: 50%;
        font-size: 0;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .float-cta::before {
        content: '→';
        font-size: 22px;
        font-weight: 700;
      }

      .cta-form {
        padding: 24px;
      }

      .scene-media img {
        height: 240px;
      }
    }