/* roulang page: index */
:root{
  --bg-base:#F7F5F0;
  --bg-surface:#FFFFFF;
  --bg-deep:#0B2E2A;
  --brand-primary:#0B4D43;
  --brand-accent:#C9A96E;
  --text-primary:#191C21;
  --text-secondary:#4E575F;
  --text-muted:#7B848C;
  --border-light:#E7E3DB;
  --border-hair:#EFECE6;
  --shadow-sm:0 2px 8px rgba(20,30,25,0.06);
  --shadow-hover:0 8px 30px rgba(20,30,25,0.12);
  --radius-card:12px;
  --radius-btn:8px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --header-h:72px;
  --section-gap:100px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);font-size:1rem;line-height:1.75;color:var(--text-primary);background-color:var(--bg-base);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
input,textarea,select{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section-pad{padding:var(--section-gap) 0}
.section-head{margin-bottom:52px;max-width:720px}
.section-head h2{font-size:clamp(1.9rem,3.2vw,2.5rem);font-weight:750;line-height:1.25;letter-spacing:-0.015em;color:var(--text-primary);margin-bottom:12px}
.section-head p{font-size:1rem;color:var(--text-secondary);line-height:1.7}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-weight:700;font-size:1rem;padding:12px 28px;border-radius:var(--radius-btn);transition:filter .25s,transform .2s,box-shadow .25s,background-color .25s;letter-spacing:.02em;white-space:nowrap}
.btn:focus-visible{outline:2px solid var(--brand-accent);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand-accent);color:#fff}
.btn-primary:hover{filter:brightness(1.08)}
.btn-outline-light{background:transparent;border:1px solid rgba(255,255,255,.65);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-outline-brand{background:transparent;border:1px solid var(--brand-primary);color:var(--brand-primary)}
.btn-outline-brand:hover{background:rgba(11,77,67,.06)}
.btn-lg{padding:16px 40px;font-size:1.0625rem;border-radius:10px}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:1000;background:rgba(247,245,240,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border-hair);transition:box-shadow .3s ease,background-color .3s ease}
.site-header.scrolled{background:rgba(255,255,255,.96);box-shadow:var(--shadow-sm)}
.site-header::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand-primary) 0%,var(--brand-accent) 100%);z-index:1}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;position:relative}
.logo{font-size:1.35rem;font-weight:800;color:var(--brand-primary);letter-spacing:-0.01em;display:flex;align-items:center;gap:2px}
.logo span{color:var(--text-muted);font-weight:600;font-size:1.15rem}
.main-nav{display:flex;align-items:center;gap:38px;position:absolute;left:50%;transform:translateX(-50%)}
.main-nav a{font-size:.95rem;font-weight:500;color:var(--text-secondary);position:relative;padding:6px 2px;transition:color .25s;letter-spacing:.01em}
.main-nav a::after{content:'';position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--brand-primary);border-radius:2px;transform:scaleX(0);transition:transform .25s}
.main-nav a:hover,.main-nav a.active{color:var(--brand-primary)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:16px}
.menu-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:42px;height:42px;border-radius:8px;background:transparent;border:1px solid var(--border-light);gap:5px;transition:background-color .25s}
.menu-toggle:hover{background:rgba(11,77,67,.06)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--brand-primary);border-radius:2px;transition:transform .3s,opacity .3s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{position:fixed;top:var(--header-h);left:0;right:0;background:var(--bg-surface);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-hover);padding:24px 20px 32px;transform:translateY(-16px);opacity:0;pointer-events:none;transition:transform .3s ease,opacity .3s ease;z-index:999;max-height:calc(100vh - var(--header-h));overflow-y:auto}
.mobile-menu.open{transform:translateY(0);opacity:1;pointer-events:auto}
.mobile-menu nav{display:flex;flex-direction:column;gap:4px}
.mobile-menu a{padding:14px 8px;font-size:1.05rem;font-weight:500;color:var(--text-primary);border-radius:8px;transition:background-color .2s;display:flex;align-items:center;justify-content:space-between}
.mobile-menu a:hover,.mobile-menu a.active{background:rgba(11,77,67,.06);color:var(--brand-primary)}
.mobile-menu .btn-cta{margin-top:16px;justify-content:center}

/* Hero */
.hero{position:relative;padding:calc(var(--header-h) + 80px) 0 90px;background-image:linear-gradient(120deg,rgba(11,46,42,.94) 0%,rgba(11,77,67,.8) 55%,rgba(11,77,67,.55) 100%),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;background-repeat:no-repeat;overflow:hidden}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:80px;background:linear-gradient(to top,var(--bg-base),transparent);z-index:1;pointer-events:none}
.hero::before{content:'';position:absolute;top:18%;right:6%;width:130px;height:130px;border:2px dashed rgba(255,255,255,.22);border-radius:50%;animation:hero-float 12s linear infinite}
@keyframes hero-float{from{transform:rotate(0)}to{transform:rotate(360deg)}}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;min-height:calc(60vh - var(--header-h))}
.hero-content{max-width:600px}
.hero h1{font-size:clamp(2.4rem,5vw,3.8rem);font-weight:800;line-height:1.2;letter-spacing:-0.02em;color:#fff;margin-bottom:20px}
.hero-sub{font-size:1.15rem;line-height:1.75;color:rgba(255,255,255,.85);margin-bottom:36px;max-width:520px}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero-stats{display:flex;align-items:center;gap:0;flex-wrap:wrap;max-width:520px}
.stat-item{flex:1;min-width:120px;padding:8px 16px;border-left:1px solid rgba(255,255,255,.18)}
.stat-item:first-child{border-left:none;padding-left:0}
.stat-num{display:block;font-size:2rem;font-weight:800;color:var(--brand-accent);line-height:1.2;font-family:Georgia,'Times New Roman',serif;font-variant-numeric:tabular-nums}
.stat-label{display:block;font-size:.85rem;color:rgba(255,255,255,.7);margin-top:2px}
.hero-tagline{display:inline-block;background:rgba(201,169,110,.18);border:1px solid rgba(201,169,110,.4);color:var(--brand-accent);font-size:.78rem;font-weight:600;padding:5px 14px;border-radius:999px;letter-spacing:.04em;margin-bottom:20px}

/* Services overview */
.services-section{background:var(--bg-base);position:relative;overflow:hidden}
.services-section::before{content:'';position:absolute;top:80px;right:-60px;width:240px;height:240px;background:radial-gradient(circle,rgba(201,169,110,.08),transparent 70%);border-radius:50%}
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;position:relative}
.service-card{background:var(--bg-surface);border:1px solid var(--border-hair);border-radius:var(--radius-card);padding:32px;display:flex;gap:20px;align-items:flex-start;transition:transform .25s,box-shadow .25s;box-shadow:var(--shadow-sm);position:relative}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.service-icon{flex-shrink:0;width:48px;height:48px;border-radius:12px;background:rgba(11,77,67,.08);display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--brand-primary)}
.service-card h3{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.service-card p{font-size:.92rem;line-height:1.7;color:var(--text-secondary)}
.service-node{position:absolute;top:-1px;left:-1px;width:4px;height:32px;border-radius:0 0 4px 0;background:var(--brand-accent)}

/* Steps */
.steps-section{background:var(--bg-surface)}
.steps-header{text-align:center;max-width:680px;margin:0 auto 56px}
.steps-header h2{font-size:clamp(1.9rem,3.2vw,2.5rem);font-weight:750;letter-spacing:-0.015em;margin-bottom:12px}
.steps-header p{color:var(--text-secondary)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;position:relative}
.step-card{background:var(--bg-base);border:1px solid var(--border-hair);border-radius:var(--radius-card);padding:40px 32px;position:relative;transition:transform .25s,box-shadow .25s;overflow:hidden}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-num{font-size:3.2rem;font-weight:800;line-height:1;font-family:Georgia,serif;color:rgba(11,77,67,.14);display:block;margin-bottom:20px}
.step-card h3{font-size:1.2rem;font-weight:700;margin-bottom:10px;color:var(--text-primary)}
.step-card p{font-size:.92rem;color:var(--text-secondary);line-height:1.7}
.step-icon{display:inline-block;font-size:1.8rem;margin-bottom:16px}
.step-card:not(:last-child)::after{content:'';position:absolute;top:50%;right:-32px;width:32px;border-top:2px dashed rgba(201,169,110,.6);z-index:2;transform:translateY(-50%)}
.step-index{position:absolute;top:16px;right:20px;font-size:.95rem;font-weight:700;color:var(--brand-accent);letter-spacing:.05em}

/* Cases */
.cases-section{background:var(--bg-base)}
.cases-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.cases-head h2{font-size:clamp(1.9rem,3.2vw,2.5rem);font-weight:750;letter-spacing:-0.015em;margin-bottom:12px}
.cases-head p{color:var(--text-secondary)}
.cases-link{font-weight:600;color:var(--brand-primary);font-size:.95rem;display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.cases-link:hover{gap:8px}
.cases-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.case-card{background:var(--bg-surface);border:1px solid var(--border-hair);border-radius:var(--radius-card);overflow:hidden;transition:transform .25s,box-shadow .25s;box-shadow:var(--shadow-sm)}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.case-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-tag{position:absolute;top:12px;left:12px;background:rgba(11,46,42,.88);color:#fff;padding:4px 14px;border-radius:999px;font-size:.75rem;font-weight:600;letter-spacing:.02em}
.case-body{padding:28px}
.case-body h3{font-size:1.25rem;font-weight:700;margin-bottom:8px;color:var(--text-primary)}
.case-body p{font-size:.92rem;color:var(--text-secondary);line-height:1.7}

/* Testimonials */
.testi-section{background:var(--bg-surface)}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testi-card{background:var(--bg-base);border:1px solid var(--border-hair);border-radius:var(--radius-card);padding:28px;transition:transform .25s,box-shadow .25s}
.testi-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.testi-stars{color:var(--brand-accent);font-size:1rem;letter-spacing:2px;margin-bottom:14px}
.testi-card blockquote{font-size:.95rem;color:var(--text-secondary);line-height:1.75;font-style:normal;margin-bottom:18px}
.testi-user{display:flex;align-items:center;gap:12px}
.testi-avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.testi-user strong{font-size:.95rem;color:var(--text-primary)}
.testi-user span{font-size:.8rem;color:var(--text-muted)}

/* FAQ */
.faq-section{background:var(--bg-base)}
.faq-wrap{max-width:840px;margin:0 auto}
.faq-item{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .25s}
.faq-item.open{box-shadow:var(--shadow-sm)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:22px 28px;font-weight:600;font-size:1rem;color:var(--text-primary);cursor:pointer;gap:16px;transition:background-color .2s;position:relative}
.faq-q:hover{background:rgba(11,77,67,.02)}
.faq-q::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-primary);border-radius:0 3px 3px 0;opacity:0;transition:opacity .25s}
.faq-item:hover .faq-q::before,.faq-item.open .faq-q::before{opacity:1}
.faq-icon{width:28px;height:28px;border-radius:50%;border:1px solid var(--border-light);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--brand-primary);transition:transform .35s ease,border-color .25s;flex-shrink:0}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--brand-accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a-inner{padding:0 28px 24px;color:var(--text-secondary);font-size:.95rem;line-height:1.8}

/* CTA */
.cta-section{padding:0 0 var(--section-gap);background:var(--bg-base)}
.cta-box{background:var(--bg-deep);border-radius:20px;padding:80px 40px;text-align:center;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.08}
.cta-content{position:relative;z-index:1}
.cta-content h2{font-size:clamp(1.9rem,3.2vw,2.6rem);font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:-0.015em}
.cta-content p{font-size:1.05rem;color:#B6C2BC;line-height:1.7;max-width:520px;margin:0 auto 36px}
.cta-content .btn{color:#fff}

/* News */
.news-section{background:var(--bg-surface);padding:0 0 var(--section-gap)}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;flex-wrap:wrap}
.news-head h2{font-size:clamp(1.9rem,3.2vw,2.5rem);font-weight:750;letter-spacing:-0.015em;margin-bottom:12px}
.news-head p{color:var(--text-secondary)}
.news-more{font-weight:600;color:var(--brand-primary);font-size:.95rem;display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.news-more:hover{gap:8px}
.news-list{border-top:1px solid var(--border-light)}
.news-row{display:flex;align-items:center;gap:28px;padding:28px 12px;border-bottom:1px solid var(--border-hair);transition:background-color .25s;border-radius:8px}
.news-row:hover{background:rgba(201,169,110,.04)}
.post-date-box{width:76px;text-align:center;flex-shrink:0;border-right:2px solid var(--border-hair);margin-right:4px;padding-right:8px}
.post-day{font-size:2.4rem;font-weight:800;color:var(--brand-primary);line-height:1;font-family:Georgia,serif;font-variant-numeric:tabular-nums}
.post-month{font-size:.78rem;color:var(--text-muted);display:block;margin-top:4px;letter-spacing:.04em}
.post-cate{font-size:.75rem;font-weight:600;color:var(--brand-primary);background:rgba(11,77,67,.08);padding:4px 14px;border-radius:999px;flex-shrink:0}
.post-main{flex:1;min-width:0}
.post-title{font-size:1.125rem;font-weight:700;color:var(--text-primary);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s}
.news-row:hover .post-title{color:var(--brand-primary)}
.post-excerpt{font-size:.875rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.post-link{flex-shrink:0;font-weight:600;color:var(--brand-primary);font-size:.85rem;display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.post-link:hover{gap:8px}
.empty-state{text-align:center;padding:64px 20px;color:var(--text-muted);font-size:1rem;display:flex;flex-direction:column;align-items:center;gap:12px}
.empty-state .empty-icon{font-size:2.2rem;opacity:.5}

/* Footer */
.site-footer{background:#101418;color:var(--text-muted);padding-top:64px;position:relative}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.06)}
.footer-brand .logo{color:#fff;font-size:1.4rem}
.footer-brand .logo span{color:#8CA5A0}
.footer-brand p{font-size:.875rem;line-height:1.8;margin-top:14px;max-width:300px;color:#9AA5A1}
.footer-col h4{color:#fff;font-size:1rem;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:.875rem;color:#9AA5A1;transition:color .25s}
.footer-col a:hover{color:var(--brand-accent)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 0;font-size:.8rem;flex-wrap:wrap}
.footer-bottom span{color:#6B7570}
.footer-bottom .beian{color:#6B7570}
.footer-linked a{color:#6B7570;transition:color .25s}
.footer-linked a:hover{color:var(--brand-accent)}
.footer-bar{position:absolute;bottom:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand-primary),var(--brand-accent))}

/* Animations */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .4s cubic-bezier(0.2,0,0,1),transform .4s cubic-bezier(0.2,0,0,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.06s}
.reveal-delay-2{transition-delay:.12s}
.reveal-delay-3{transition-delay:.18s}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* Responsive */
@media(max-width:1200px){
  .main-nav{gap:28px}
}
@media(max-width:992px){
  :root{--section-gap:80px}
  .main-nav{display:none}
  .menu-toggle{display:flex}
  .header-inner{justify-content:space-between}
  .header-actions .btn-cta{display:none}
  .mobile-menu{display:block}
  .steps-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .step-card{padding:28px 20px}
  .step-card:not(:last-child)::after{right:-20px;width:20px}
  .cases-grid{grid-template-columns:1fr 1fr;gap:20px}
  .testi-grid{grid-template-columns:repeat(3,1fr);gap:16px}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  :root{--section-gap:64px}
  .container{padding:0 16px}
  .hero{padding-top:calc(var(--header-h) + 56px);padding-bottom:72px}
  .hero h1{font-size:2rem}
  .hero-sub{font-size:1rem}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px}
  .hero-actions .btn{width:100%}
  .hero-stats{max-width:100%}
  .stat-item{min-width:80px;padding:8px 10px}
  .stat-num{font-size:1.6rem}
  .services-grid{grid-template-columns:1fr 1fr;gap:16px}
  .service-card{padding:24px;flex-direction:column;gap:12px}
  .steps-grid{grid-template-columns:1fr;gap:24px;max-width:480px;margin:0 auto}
  .step-card:not(:last-child)::after{display:none}
  .step-card{text-align:center;padding:32px 24px}
  .step-num{margin-bottom:8px}
  .steps-header h2{font-size:1.8rem}
  .cases-grid{grid-template-columns:1fr;gap:24px}
  .testi-grid{grid-template-columns:1fr;gap:16px}
  .testi-card{padding:24px}
  .case-body{padding:20px}
  .faq-q{padding:18px 20px}
  .faq-a-inner{padding:0 20px 20px}
  .cta-box{padding:60px 24px}
  .cta-content h2{font-size:1.6rem}
  .cta-content p{font-size:.95rem}
  .news-section{padding-bottom:64px}
  .news-row{flex-wrap:wrap;gap:12px;padding:20px 8px;position:relative}
  .post-date-box{width:60px;border-right:none}
  .post-day{font-size:1.8rem}
  .post-main{width:calc(100% - 72px);flex:none}
  .post-cate{order:3}
  .post-link{position:absolute;right:8px;bottom:18px;font-size:.8rem}
  .post-excerpt{display:none}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  .header-actions{flex-direction:row}
  .footer-brand p{max-width:100%}
}
@media(max-width:520px){
  .services-grid{grid-template-columns:1fr}
  .hero-stats{flex-direction:row}
  .stat-item:nth-child(2){border-left:1px solid rgba(255,255,255,.18)}
  .post-main{width:100%}
  .post-cate{order:initial}
  .post-link{position:static;margin-top:4px}
  .news-row{flex-direction:row;flex-wrap:wrap}
  .post-main{order:2;width:100%}
  .post-cate{order:1}
  .post-date-box{order:0;width:auto;text-align:left;border-right:none;padding-right:0}
  .post-day{font-size:1.4rem;display:inline-block;margin-right:2px}
  .post-month{display:inline-block}
}}

/* roulang page: article */
:root {
  --bg-base: #F7F5F0;
  --bg-surface: #FFFFFF;
  --bg-deep: #0B2E2A;
  --brand-primary: #0B4D43;
  --brand-accent: #C9A96E;
  --text-primary: #191C21;
  --text-secondary: #4E575F;
  --text-muted: #7B848C;
  --border-light: #E7E3DB;
  --border-hair: #EFECE6;
  --shadow-sm: 0 2px 8px rgba(20, 30, 25, 0.06);
  --shadow-hover: 0 8px 30px rgba(20, 30, 25, 0.12);
  --radius-card: 12px;
  --radius-btn: 8px;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  padding-top: 72px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  z-index: 100;
  background: rgba(247, 245, 240, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-primary) 60%, var(--brand-accent) 60%, var(--brand-accent) 100%);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--brand-primary);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.logo span { color: var(--text-secondary); font-weight: 600; }
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  position: relative;
  transition: color 0.25s ease;
  white-space: nowrap;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--brand-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  border-radius: 2px;
}
.main-nav a:hover { color: var(--brand-primary); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--brand-primary); font-weight: 600; }
.main-nav a.active::after { transform: scaleX(1); }
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border-light);
  background: var(--bg-surface);
}
.nav-toggle span {
  display: block;
  width: 18px; height: 2px;
  background: var(--brand-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.no-scroll { overflow: hidden; }

.article-hero {
  background: linear-gradient(135deg, rgba(11, 46, 42, 0.94), rgba(11, 77, 67, 0.78)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: #fff;
  padding: 96px 0 120px;
  position: relative;
}
.breadcrumb {
  font-size: 13px;
  color: #C7D4CF;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 28px;
}
.breadcrumb a { color: #C7D4CF; transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--brand-accent); }
.breadcrumb .sep { margin: 0 8px; opacity: 0.6; }
.breadcrumb .current { color: #fff; max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(201, 169, 110, 0.14);
  border: 1px solid rgba(201, 169, 110, 0.5);
  color: #E4C98A;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.article-title-h1 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  max-width: 860px;
  margin-bottom: 16px;
  overflow-wrap: break-word;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }

.article-main { padding: 0 0 24px; }
.article-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  margin-top: -60px;
  padding: 40px 48px 32px;
  border: 1px solid var(--border-hair);
}
.article-divider { height: 1px; background: var(--border-light); margin: 8px 0 32px; }
.article-content { font-size: 16px; line-height: 1.85; color: var(--text-primary); }
.article-content h2 {
  font-size: 1.55em;
  font-weight: 750;
  line-height: 1.3;
  margin: 2em 0 0.75em;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.article-content h3 {
  font-size: 1.2em;
  font-weight: 650;
  line-height: 1.35;
  margin: 1.8em 0 0.6em;
  color: var(--text-primary);
}
.article-content p { margin: 1em 0; }
.article-content blockquote {
  border-left: 3px solid var(--brand-accent);
  background: #FAF7F0;
  padding: 18px 22px;
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  margin: 1.6em 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-content ul, .article-content ol { padding-left: 1.4em; margin: 1em 0; }
.article-content ul li { list-style: disc; margin: 0.4em 0; }
.article-content ol li { list-style: decimal; margin: 0.4em 0; }
.article-content li::marker { color: var(--brand-primary); }
.article-content a { color: var(--brand-primary); text-decoration: underline; text-underline-offset: 3px; transition: color 0.2s ease; }
.article-content a:hover { color: var(--brand-accent); }
.article-content img { max-width: 100%; height: auto; border-radius: var(--radius-card); margin: 1.4em 0; box-shadow: var(--shadow-sm); }
.article-content pre {
  background: #101418;
  color: #E7E3DB;
  padding: 20px 24px;
  border-radius: var(--radius-card);
  overflow-x: auto;
  line-height: 1.7;
  margin: 1.6em 0;
  font-size: 14px;
}
.article-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(11, 77, 67, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.92em;
  color: var(--brand-primary);
}
.article-content pre code { background: transparent; padding: 0; color: inherit; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: 15px; }
.article-content th, .article-content td { border: 1px solid var(--border-light); padding: 10px 14px; text-align: left; }
.article-content th { background: #F7F5F0; font-weight: 600; }
.article-content hr { border: none; border-top: 1px solid var(--border-light); margin: 2em 0; }

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 28px;
  margin-top: 32px;
  border-top: 1px solid var(--border-hair);
}
.badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(11, 77, 67, 0.08);
  color: var(--brand-primary);
  font-size: 12px;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}
.badge:hover { background: var(--brand-primary); color: #fff; }
.article-back { margin-top: 28px; }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
  transition: gap 0.25s ease, color 0.25s ease;
}
.back-link:hover { gap: 12px; color: var(--brand-accent); }

.article-empty { text-align: center; padding: 40px 20px; }
.article-empty h1 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.article-empty p { color: var(--text-secondary); margin-bottom: 28px; }
.btn-gold {
  display: inline-block;
  background: var(--brand-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  letter-spacing: 0.02em;
  transition: filter 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 14px rgba(201, 169, 110, 0.28);
}
.btn-gold:hover { filter: brightness(1.08); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(201, 169, 110, 0.34); }
.btn-gold:active { transform: translateY(0); }
.btn-gold:focus-visible, .back-link:focus-visible, .related-card:focus-visible, .main-nav a:focus-visible, .logo:focus-visible, .breadcrumb a:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.related-section { padding: 70px 0 80px; background: linear-gradient(180deg, var(--bg-base) 0%, #F0EDE6 100%); }
.related-section h3 { font-size: clamp(1.5rem, 2.5vw, 1.9rem); font-weight: 750; margin-bottom: 32px; letter-spacing: -0.015em; color: var(--text-primary); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-hair);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: block;
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.related-card .cover { aspect-ratio: 16 / 9; overflow: hidden; background: var(--border-hair); }
.related-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .cover img { transform: scale(1.04); }
.related-card-body { padding: 18px 18px 20px; }
.related-card-body h4 {
  font-size: 15px;
  font-weight: 650;
  line-height: 1.5;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
  transition: color 0.2s ease;
}
.related-card:hover .related-card-body h4 { color: var(--brand-primary); }
.related-card-body span { font-size: 12px; color: var(--text-muted); font-weight: 500; }

.cta-section { padding: 70px 0 90px; }
.cta-box {
  background: linear-gradient(120deg, rgba(11, 46, 42, 0.97), rgba(11, 77, 67, 0.92)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border-radius: 20px;
  padding: 60px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}
.cta-box p { color: #B6C2BC; font-size: 15px; margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-box .btn-gold { font-size: 17px; padding: 16px 44px; }

.site-footer { background: #101418; color: #9AA4AC; margin-top: 0; }
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 64px 0 48px;
}
.footer-brand .logo { color: #fff; font-size: 20px; }
.footer-brand .logo span { color: #C9A96E; font-weight: 600; }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.75; color: #7B848C; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; letter-spacing: 0.02em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: #9AA4AC; transition: color 0.2s ease; }
.footer-col ul li a:hover { color: var(--brand-accent); }
.footer-col ul li:last-child { margin-bottom: 0; color: #9AA4AC; font-size: 14px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  font-size: 13px;
  color: #6B757D;
}
.footer-bar { height: 4px; background: var(--brand-primary); }

.reveal { opacity: 1; transform: translateY(0); }
body.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.5s cubic-bezier(0.2, 0, 0, 1), transform 0.5s cubic-bezier(0.2, 0, 0, 1); }
body.js .reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 991px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 20px;
    box-shadow: var(--shadow-hover);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-hair);
  }
  .main-nav.open { display: flex; animation: navIn 0.3s ease; }
  @keyframes navIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid var(--border-hair); font-size: 16px; }
  .main-nav a:last-child { border-bottom: none; }
  .main-nav a::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .article-hero { padding: 64px 0 90px; }
  .article-card { padding: 28px 24px 24px; margin-top: -48px; }
  .article-title-h1 { font-size: clamp(1.4rem, 4vw, 1.9rem); }
  .article-meta { gap: 12px; flex-direction: column; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 44px 24px; }
}

@media (max-width: 576px) {
  .container { padding: 0 16px; }
  .header-inner { gap: 12px; }
  .footer-top { grid-template-columns: 1fr; padding: 48px 0 32px; }
  .footer-bottom { flex-direction: column; }
  .cta-section { padding: 48px 0 60px; }
  .related-section { padding: 50px 0 60px; }
  .article-back { margin-top: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  body.js .reveal { opacity: 1; transform: none; }
}

/* roulang page: category1 */
:root {
  --bg-base: #F7F5F0;
  --bg-surface: #FFFFFF;
  --bg-deep: #0B2E2A;
  --brand-primary: #0B4D43;
  --brand-accent: #C9A96E;
  --text-primary: #191C21;
  --text-secondary: #4E575F;
  --text-muted: #7B848C;
  --border-light: #E7E3DB;
  --border-hair: #EFECE6;
  --shadow-sm: 0 2px 8px rgba(20, 30, 25, 0.06);
  --shadow-hover: 0 8px 30px rgba(20, 30, 25, 0.12);
  --radius-card: 12px;
  --radius-btn: 8px;
  --font-sans: system-ui, -apple-system, "PingFang SC", "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-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-hair);
  transition: box-shadow 0.3s ease;
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-primary) 60%, var(--brand-accent) 60%, var(--brand-accent) 100%);
  z-index: 1;
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--brand-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.logo span {
  color: var(--text-secondary);
  font-weight: 500;
}

.main-nav {
  display: flex;
  gap: 36px;
}

.main-nav a {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  transition: color 0.3s;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--brand-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--brand-primary);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all 0.25s ease;
  font-size: 0.9375rem;
}

.btn-primary {
  background: var(--brand-accent);
  color: #FFFFFF;
  padding: 10px 24px;
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-header {
  padding: 9px 20px;
}

.btn-large {
  padding: 16px 44px;
  font-size: 1rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background 0.3s;
}

.nav-toggle:hover {
  background: rgba(11, 77, 67, 0.06);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--brand-primary);
  transition: all 0.3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: var(--bg-surface);
  padding: 24px 24px 32px;
  box-shadow: var(--shadow-hover);
  z-index: 99;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1px solid var(--border-light);
  opacity: 0;
  transform: translateY(-8px);
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.mobile-nav a {
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  border-radius: 8px;
  transition: background 0.25s, color 0.25s;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  background: rgba(11, 77, 67, 0.06);
  color: var(--brand-primary);
}

.mobile-nav .btn {
  margin-top: 12px;
  width: 100%;
}

/* ===== Hero ===== */
.category-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  background: linear-gradient(120deg, rgba(11, 46, 42, 0.94) 0%, rgba(11, 46, 42, 0.78) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  color: #FFFFFF;
  overflow: hidden;
}

.category-hero .hero-inner {
  position: relative;
  z-index: 1;
  padding: 64px 0;
  width: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.3s;
}

.breadcrumb a:hover {
  color: #FFFFFF;
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}

.category-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.category-hero .hero-desc {
  max-width: 580px;
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.75;
}

/* ===== Content Layout ===== */
.content-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  padding-top: 64px;
  padding-bottom: 64px;
  align-items: start;
}

.content-main {
  display: flex;
  flex-direction: column;
  gap: 56px;
  min-width: 0;
}

.content-side {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

/* ===== Block ===== */
.block {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.4s cubic-bezier(0.2, 0, 0, 1), transform 0.4s cubic-bezier(0.2, 0, 0, 1);
}

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

.block-title {
  font-size: clamp(1.5rem, 2.4vw, 1.875rem);
  font-weight: 750;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.block-sub {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ===== Feature Grid ===== */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: rgba(11, 77, 67, 0.2);
}

.feature-card .feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(11, 77, 67, 0.08);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Scene Grid ===== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scene-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.25s ease;
}

.scene-item:hover {
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.scene-item .scene-icon {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}

.scene-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.scene-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Steps Timeline ===== */
.steps-list {
  position: relative;
  padding-left: 32px;
}

.steps-list::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--brand-accent), var(--brand-primary));
}

.step-item {
  position: relative;
  padding: 8px 0 28px;
}

.step-item:last-child {
  padding-bottom: 8px;
}

.step-item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--brand-primary);
  border: 3px solid var(--bg-base);
  box-shadow: 0 0 0 2px var(--brand-accent);
}

.step-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--brand-accent);
  letter-spacing: 0.12em;
  display: block;
  margin-bottom: 4px;
}

.step-item h3 {
  font-size: 1.0625rem;
  font-weight: 650;
  color: var(--text-primary);
  margin: 4px 0 6px;
}

.step-item p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover {
  border-color: rgba(11, 77, 67, 0.35);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  background: none;
  color: var(--text-primary);
  transition: color 0.3s;
  gap: 16px;
}

.faq-question:hover {
  color: var(--brand-primary);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--text-muted);
  transition: transform 0.35s ease, border-color 0.35s, color 0.35s;
  flex-shrink: 0;
  line-height: 1;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 320px;
}

.faq-answer p {
  padding: 0 24px 24px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* ===== Sidebar ===== */
.side-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease;
}

.side-card:hover {
  box-shadow: var(--shadow-hover);
}

.side-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 16px;
}

.side-card h3 {
  font-size: 1.0625rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 12px;
}

.side-card h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--brand-accent);
}

.side-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  background: rgba(11, 77, 67, 0.06);
  color: var(--brand-primary);
  transition: all 0.25s;
}

.tag:hover {
  background: var(--brand-primary);
  color: #FFFFFF;
}

.side-contact .contact-line {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.6;
}

.side-contact .btn {
  width: 100%;
  margin-top: 16px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 0 0 80px;
}

.cta-box {
  position: relative;
  background: var(--bg-deep);
  border-radius: 20px;
  padding: 64px 48px;
  text-align: center;
  color: #FFFFFF;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  opacity: 0.08;
}

.cta-box > * {
  position: relative;
  z-index: 1;
}

.cta-box h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 12px;
}

.cta-box p {
  color: #B6C2BC;
  font-size: 1rem;
  margin-bottom: 32px;
}

.cta-box .btn-large {
  padding: 16px 44px;
  font-size: 1rem;
}

/* ===== Footer ===== */
.site-footer {
  background: #101418;
  color: rgba(255, 255, 255, 0.7);
  padding-top: 64px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #FFFFFF;
  font-size: 1.25rem;
}

.footer-brand .logo span {
  color: rgba(255, 255, 255, 0.55);
}

.footer-brand p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 16px;
  max-width: 320px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
}

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

.footer-col a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.25s;
}

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

.footer-col li {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bar {
  height: 4px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
}

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .main-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .btn-header {
    display: none;
  }

  .header-inner {
    height: 60px;
  }

  .content-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .content-side {
    position: static;
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

@media (max-width: 768px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

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

  .category-hero .hero-inner {
    padding: 48px 0;
  }

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

  .cta-box .btn-large {
    width: 100%;
    max-width: 280px;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

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

  .header-inner {
    height: 56px;
  }

  .category-hero {
    min-height: 280px;
  }

  .category-hero h1 {
    font-size: 1.875rem;
  }

  .content-main {
    gap: 40px;
  }

  .block-title {
    font-size: 1.5rem;
  }

  .step-item {
    padding: 8px 0 24px;
  }

  .faq-question {
    padding: 16px 20px;
    font-size: 0.9375rem;
  }

  .faq-answer p {
    padding: 0 20px 20px;
    font-size: 0.875rem;
  }

  .cta-section {
    padding-bottom: 56px;
  }
}

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

  html {
    scroll-behavior: auto;
  }

  .block {
    opacity: 1;
    transform: none;
  }
}

/* roulang page: category2 */
:root {
  --bg-base: #F7F5F0;
  --bg-surface: #FFFFFF;
  --bg-deep: #0B2E2A;
  --brand-primary: #0B4D43;
  --brand-accent: #C9A96E;
  --text-primary: #191C21;
  --text-secondary: #4E575F;
  --text-muted: #7B848C;
  --border-light: #E7E3DB;
  --border-hair: #EFECE6;
  --shadow-sm: 0 2px 8px rgba(20, 30, 25, 0.06);
  --shadow-hover: 0 8px 30px rgba(20, 30, 25, 0.12);
  --radius-card: 12px;
  --radius-btn: 8px;
  --font-sans: system-ui, -apple-system, "PingFang SC", "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-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}
.section-head { margin-bottom: 40px; }
.section-head.center { text-align: center; }
.section-head h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.5rem);
  font-weight: 750;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}
.section-head p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 1rem;
}
.section-head.center p { max-width: 560px; margin-left: auto; margin-right: auto; }

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 11px 24px;
  border-radius: var(--radius-btn);
  letter-spacing: 0.02em;
  transition: filter 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid transparent;
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { outline: 2px solid var(--brand-accent); outline-offset: 2px; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--brand-primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--brand-primary);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.btn-outline:hover { background: rgba(11, 77, 67, 0.08); border-color: var(--brand-primary); }
.btn-outline:active { transform: translateY(1px); }
.btn-outline:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 2px; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(247, 245, 240, 0.96);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
  border-color: var(--border-hair);
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  position: relative;
}
.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--brand-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  white-space: nowrap;
}
.logo span { font-weight: 600; color: var(--text-secondary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 28px 2px 26px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.main-nav a:hover { color: var(--brand-primary); }
.main-nav a.active { color: var(--brand-primary); border-bottom-color: var(--brand-primary); font-weight: 600; }
.header-cta { padding: 10px 22px; font-size: 0.9rem; }
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border-light);
}
.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 992px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 24px;
    box-shadow: var(--shadow-hover);
    border-bottom: 1px solid var(--border-hair);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav a {
    width: 100%;
    padding: 14px 8px;
    font-size: 1rem;
    border-bottom: none;
    border-left: 3px solid transparent;
  }
  .main-nav a:hover { border-left-color: var(--brand-primary); }
  .main-nav a.active { border-left-color: var(--brand-primary); border-bottom: none; }
  .header-cta { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* Page Hero */
.page-hero {
  margin-top: 72px;
  min-height: 320px;
  background: linear-gradient(120deg, rgba(11, 46, 42, 0.96) 0%, rgba(11, 46, 42, 0.78) 100%), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-inner {
  width: 100%;
  padding-top: 64px;
  padding-bottom: 48px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  position: relative;
  z-index: 1;
}
.page-hero-content h1 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.page-hero-content p {
  margin-top: 14px;
  color: #C8D4CF;
  font-size: 1.05rem;
  max-width: 460px;
}
.page-hero-tag {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 18px;
  border-radius: 999px;
  color: #E3D9C8;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  backdrop-filter: blur(4px);
}
@media (max-width: 768px) {
  .page-hero { min-height: 260px; }
  .page-hero-inner { flex-direction: column; align-items: flex-start; padding-top: 40px; padding-bottom: 32px; }
  .page-hero-tag { margin-top: 8px; }
}

/* Archives Section */
.archives-section { padding: 80px 0; }
.archives-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px;
}
@media (max-width: 992px) {
  .archives-grid { grid-template-columns: 1fr; }
}
.archives-main .section-head h2 { font-size: clamp(1.7rem, 2.6vw, 2.2rem); }
.archives-main .section-head p { margin-top: 8px; }

/* Article Cards */
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}
@media (max-width: 640px) {
  .article-grid { grid-template-columns: 1fr; }
}
.article-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.article-card .card-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--border-light);
}
.article-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.article-card:hover .card-img img { transform: scale(1.03); }
.article-card .card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: rgba(11, 77, 67, 0.92);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.02em;
  backdrop-filter: blur(4px);
}
.article-card .card-body {
  padding: 22px 22px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card .card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: 10px;
}
.article-card .card-title {
  font-size: 1.1rem;
  font-weight: 650;
  line-height: 1.45;
  color: var(--text-primary);
  transition: color 0.2s ease;
}
.article-card:hover .card-title { color: var(--brand-primary); }
.article-card .card-desc {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-link {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-primary);
  transition: gap 0.2s ease;
}
.article-card .card-link:hover { gap: 8px; }
.article-card .card-link::after { content: "→"; font-weight: 400; }

/* Sidebar */
.archives-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.side-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease;
}
.side-card:hover { box-shadow: var(--shadow-hover); }
.side-card h3 {
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.side-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.side-card .btn-outline { margin-top: 16px; }
.side-contact { background: var(--bg-deep); border-color: var(--bg-deep); }
.side-contact h3 { color: #fff; }
.side-contact p { color: #B6C2BC; }
.side-contact .btn-primary { margin-top: 16px; }

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tag-cloud .tag {
  display: inline-block;
  background: rgba(11, 77, 67, 0.08);
  color: var(--brand-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(11, 77, 67, 0.12);
  transition: background 0.2s ease, border-color 0.2s ease;
}
.tag-cloud .tag:hover { background: rgba(11, 77, 67, 0.15); border-color: rgba(11, 77, 67, 0.3); }

/* Feature Path */
.feature-section { padding: 80px 0; background: var(--bg-surface); border-top: 1px solid var(--border-hair); border-bottom: 1px solid var(--border-hair); }
.feature-path {
  display: flex;
  align-items: stretch;
  gap: 0;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}
.path-node {
  flex: 1;
  padding: 28px 20px 20px;
  background: var(--bg-base);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.path-node:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.node-num {
  display: inline-block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 12px;
}
.path-node h3 { font-size: 1.1rem; font-weight: 650; margin-bottom: 8px; color: var(--text-primary); }
.path-node p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; }
.path-line {
  width: 48px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--brand-accent) 0 6px, transparent 6px 12px);
  align-self: center;
  flex-shrink: 0;
}
@media (max-width: 992px) {
  .feature-path { flex-direction: column; gap: 20px; }
  .path-line { width: 2px; height: 32px; background: repeating-linear-gradient(0deg, var(--brand-accent) 0 6px, transparent 6px 12px); align-self: center; }
}

/* FAQ */
.faq-section { padding: 80px 0; }
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.faq-item:hover { border-color: var(--border-light); box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--brand-primary); }
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--brand-primary);
  transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1), background 0.3s ease, border-color 0.3s ease;
  line-height: 1;
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* CTA */
.cta-section { padding: 32px 0 100px; }
.cta-card {
  background: linear-gradient(120deg, rgba(11, 46, 42, 0.97) 0%, rgba(11, 46, 42, 0.88) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-radius: 20px;
  padding: 72px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.18) 0%, transparent 70%);
  pointer-events: none;
}
.cta-card h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.5rem);
  font-weight: 750;
  color: #fff;
  letter-spacing: -0.015em;
  line-height: 1.3;
}
.cta-card p {
  margin-top: 14px;
  color: #B6C2BC;
  font-size: 1rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.cta-card .btn-primary {
  margin-top: 32px;
  padding: 16px 44px;
  font-size: 1.05rem;
}
@media (max-width: 768px) {
  .cta-section { padding: 24px 0 64px; }
  .cta-card { padding: 48px 24px; }
}

/* Footer */
.site-footer {
  background: #101418;
  color: #A6AEB5;
  position: relative;
}
.site-footer .container { padding-top: 64px; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
@media (max-width: 992px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  .footer-top { grid-template-columns: 1fr; }
}
.footer-brand .logo { color: #fff; font-size: 1.5rem; }
.footer-brand .logo span { color: #B6C2BC; }
.footer-brand p {
  margin-top: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #88959B;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li { font-size: 0.9rem; color: #88959B; }
.footer-col a { transition: color 0.2s ease; }
.footer-col a:hover { color: var(--brand-accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #6E7A80;
}
.footer-bar {
  height: 4px;
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
}

/* Animation */
main > section { animation: fadeUp 0.4s cubic-bezier(0.2, 0, 0, 1); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}