/* roulang page: index */
:root{
  --color-bg:#0E0F12;
  --color-bg-elevated:#171920;
  --color-bg-sunken:#0A0B0E;
  --color-primary:#C9A86C;
  --color-primary-hover:#D9BC85;
  --color-accent:#A32638;
  --color-text:#EAE6DE;
  --color-text-muted:#9A968E;
  --color-line:#2A2C33;
  --color-line-strong:#3A3D45;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-badge:999px;
  --shadow-normal:0 8px 24px rgba(0,0,0,.45);
  --shadow-hover:0 12px 36px rgba(0,0,0,.6);
  --shadow-gold:0 0 0 1px rgba(201,168,108,.25), 0 8px 30px rgba(201,168,108,.12);
  --font-stack:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --section-space:96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--color-bg);
  color:var(--color-text);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
a{color:var(--color-primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--color-primary-hover);text-decoration:none}
img{max-width:100%;height:auto}
button,input{font-family:inherit}
ul{list-style:none;padding:0;margin:0}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:600;color:var(--color-text)}
p{margin-bottom:0}

.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--color-primary);color:#121212;
  font-weight:600;font-size:16px;letter-spacing:.05em;
  height:48px;padding:0 28px;border:none;border-radius:var(--radius-btn);
  transition:all .25s ease;cursor:pointer;
}
.btn-gold:hover{background:var(--color-primary-hover);color:#121212;transform:translateY(-1px);box-shadow:0 8px 24px rgba(201,168,108,.3)}
.btn-gold:active{transform:translateY(0)}
.btn-gold.btn-sm{height:40px;padding:0 24px;font-size:15px}
.btn-gold.btn-lg{height:52px;padding:0 36px;font-size:17px}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:var(--color-primary);
  font-weight:600;font-size:16px;letter-spacing:.05em;
  height:48px;padding:0 28px;border:1.5px solid var(--color-primary);border-radius:var(--radius-btn);
  transition:all .25s ease;cursor:pointer;
}
.btn-outline:hover{background:rgba(201,168,108,.08);color:var(--color-primary-hover);border-color:var(--color-primary-hover)}
.btn-outline.btn-sm{height:40px;padding:0 24px;font-size:15px}
.btn-outline.btn-lg{height:52px;padding:0 36px;font-size:17px}

.badge-cat{
  display:inline-block;background:var(--color-accent);color:#fff;
  font-size:12px;font-weight:500;padding:2px 12px;border-radius:var(--radius-badge);
}
.badge-gold{
  display:inline-block;background:var(--color-primary);color:#121212;
  font-size:12px;font-weight:600;padding:2px 12px;border-radius:var(--radius-badge);
}

.text-gold{color:var(--color-primary)}

.section{padding:var(--section-space) 0;position:relative}
.section-head{margin-bottom:56px;max-width:720px}
.section-bar{
  display:inline-block;width:24px;height:4px;
  background:var(--color-primary);border-radius:2px;margin-bottom:16px;
}
.section-head h2{font-size:32px;font-weight:700;letter-spacing:.02em}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(14,15,18,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--color-line);
}
.site-header .navbar{padding-top:14px;padding-bottom:14px}
.site-header .navbar-brand{display:flex;align-items:center;gap:10px;padding:0;margin:0}
.brand-mark{
  width:42px;height:42px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(201,168,108,.08);border-radius:10px;
  border:1px solid rgba(201,168,108,.3);
}
.brand-text{font-size:20px;font-weight:700;color:var(--color-text);letter-spacing:.02em;display:flex;align-items:center;gap:8px}
.brand-badge{
  background:var(--color-primary);color:#121212;
  font-size:11px;font-weight:700;padding:2px 10px;border-radius:var(--radius-badge);
  letter-spacing:.04em;
}
.site-header .navbar-nav{gap:8px}
.site-header .nav-link{
  color:var(--color-text-muted);font-size:15px;font-weight:500;
  padding:8px 18px !important;border-radius:8px;position:relative;
  transition:color .25s ease;
}
.site-header .nav-link:hover{color:var(--color-text)}
.site-header .nav-link.active{color:var(--color-text)}
.site-header .nav-link.active::after{
  content:"";position:absolute;bottom:2px;left:18px;right:18px;height:2px;
  background:var(--color-primary);border-radius:2px;
}
.nav-cta{display:flex;align-items:center;gap:12px;margin-left:16px}
.site-header .navbar-toggler{
  border-color:var(--color-line);color:var(--color-text);
  padding:6px 10px;border-radius:8px;
}
.site-header .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(201,168,108,.25);outline:none}
.site-header .navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23EAE6DE' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

/* ===== Hero ===== */
.site-hero{
  position:relative;min-height:680px;height:100vh;
  display:flex;align-items:center;
  background:var(--color-bg-sunken);
  overflow:hidden;
  padding-top:80px;
}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.5;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,15,18,.72),rgba(14,15,18,.92));
}
.hero-radial{
  position:absolute;top:0;right:0;width:55%;height:70%;
  background:radial-gradient(circle at 70% 30%,rgba(201,168,108,.08),transparent 60%);
  pointer-events:none;
}
.site-hero .container{position:relative;z-index:2}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;
}
.hero-content{max-width:560px}
.site-hero h1{
  font-size:50px;font-weight:700;line-height:1.25;letter-spacing:.02em;
  margin-bottom:24px;
}
.hero-subtitle{
  font-size:20px;color:var(--color-text-muted);
  margin-bottom:36px;line-height:1.6;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-trust{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.hero-trust li{
  display:flex;align-items:center;gap:6px;
  font-size:13px;color:var(--color-text-muted);
}
.hero-trust li svg{width:16px;height:16px;stroke:var(--color-primary);fill:none;stroke-width:1.8}
.hero-trust li + li::before{content:"·";margin:0 8px;color:var(--color-line-strong)}
.hero-mockup{display:flex;justify-content:center;position:relative}
.phone-frame{
  width:300px;height:600px;border-radius:40px;
  background:#1c1d22;border:2px solid rgba(201,168,108,.35);
  padding:10px;position:relative;
  box-shadow:0 24px 70px rgba(0,0,0,.55),0 0 0 1px rgba(201,168,108,.08);
}
.phone-screen{
  width:100%;height:100%;border-radius:30px;overflow:hidden;
  position:relative;background:var(--color-bg-elevated);
}
.phone-screen img{width:100%;height:100%;object-fit:cover;display:block}
.phone-notch{
  position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:100px;height:20px;background:#000;border-radius:0 0 12px 12px;
  z-index:3;opacity:.85;
}
.phone-glow{
  position:absolute;inset:-20px;border-radius:48px;
  background:radial-gradient(circle at 50% 50%,rgba(201,168,108,.15),transparent 65%);
  z-index:-1;pointer-events:none;
}

/* ===== Highlights ===== */
.section-highlights{background:var(--color-bg)}
.section-highlights::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.3),transparent);
}
.highlight-card{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-line);
  border-radius:var(--radius-card);
  padding:32px 28px;
  height:100%;
  display:flex;flex-direction:column;
  transition:border-color .25s ease,box-shadow .25s ease;
  position:relative;
}
.highlight-card:hover{
  border-color:rgba(201,168,108,.5);
  box-shadow:var(--shadow-hover);
}
.highlight-card::before{
  content:"";position:absolute;top:-1px;left:16px;right:16px;height:1px;
  background:var(--color-primary);opacity:0;
  transition:opacity .25s ease;
}
.highlight-card:hover::before{opacity:1}
.card-icon{
  width:48px;height:48px;border-radius:8px;
  background:rgba(201,168,108,.12);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;
}
.card-icon svg{width:24px;height:24px;stroke:var(--color-primary);fill:none;stroke-width:1.8}
.highlight-card h3{font-size:20px;font-weight:600;margin-bottom:12px}
.highlight-card p{font-size:14px;color:var(--color-text-muted);line-height:1.7;margin-bottom:20px;flex-grow:1}
.card-link{
  font-size:14px;color:var(--color-primary);display:inline-flex;align-items:center;gap:6px;
  transition:gap .25s ease;
}
.card-link:hover{color:var(--color-primary-hover)}
.card-link:hover i{transform:translateX(4px)}
.card-link i{transition:transform .25s ease}

/* ===== Timeline ===== */
.section-timeline{background:var(--color-bg-sunken);position:relative}
.section-timeline::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.2),transparent);
}
.timeline{position:relative;max-width:920px;margin:0 auto}
.timeline::before{
  content:"";position:absolute;left:50%;top:8px;bottom:8px;width:2px;
  background:var(--color-line);transform:translateX(-50%);
}
.timeline-item{position:relative;width:50%;padding:0 48px 56px}
.timeline-item.left{left:0;padding-right:64px;text-align:right}
.timeline-item.right{left:50%;padding-left:64px}
.timeline-marker{
  position:absolute;top:26px;width:12px;height:12px;border-radius:50%;
  background:var(--color-primary);
  box-shadow:0 0 0 6px rgba(201,168,108,.15);
}
.timeline-item.left .timeline-marker{right:-6px}
.timeline-item.right .timeline-marker{left:-6px}
.timeline-card{background:var(--color-bg-elevated);border:1px solid var(--color-line);border-radius:var(--radius-card);padding:24px}
.timeline-card:hover{border-color:rgba(201,168,108,.45);box-shadow:var(--shadow-normal)}
.badge-date{
  display:inline-block;background:var(--color-accent);color:#fff;
  font-size:12px;font-weight:600;padding:3px 14px;border-radius:var(--radius-badge);
  margin-bottom:12px;letter-spacing:.03em;
}
.timeline-card p{font-size:15px;color:var(--color-text-muted);line-height:1.7}

/* ===== Plans ===== */
.section-plans{background:var(--color-bg);position:relative}
.section-plans::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.3),transparent);
}
.plans-note{font-size:13px;color:var(--color-text-muted);margin-bottom:40px}
.plan-card{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-line);
  border-radius:var(--radius-card);
  padding:0 0 32px;
  height:100%;
  display:flex;flex-direction:column;
  transition:border-color .25s ease,box-shadow .25s ease;
  position:relative;overflow:hidden;
}
.plan-card:hover{border-color:rgba(201,168,108,.4);box-shadow:var(--shadow-normal)}
.plan-card.featured{
  border:1.5px solid var(--color-primary);
  box-shadow:var(--shadow-gold);
}
.plan-card.featured:hover{box-shadow:0 0 0 1px rgba(201,168,108,.3),0 12px 40px rgba(201,168,108,.18)}
.plan-topbar{
  height:48px;border-radius:12px 12px 0 0;
  background:linear-gradient(90deg,rgba(201,168,108,.85),rgba(233,213,178,.7),rgba(201,168,108,.85));
  margin-bottom:28px;
}
.plan-card:not(.featured) .plan-topbar{display:none}
.plan-body{padding:0 32px;flex-grow:1;display:flex;flex-direction:column}
.plan-card h3{font-size:20px;font-weight:600;margin-bottom:8px}
.plan-price{font-size:32px;font-weight:700;color:var(--color-text);margin-bottom:4px;display:flex;align-items:baseline;gap:4px}
.plan-price small{font-size:14px;color:var(--color-text-muted);font-weight:400}
.plan-features{margin-top:24px;flex-grow:1}
.plan-features li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--color-text-muted);
  line-height:1.6;padding:7px 0;
}
.plan-features li i{color:var(--color-primary);font-size:13px;margin-top:3px}
.plan-btn{margin-top:28px}
.plan-btn .btn-gold,.plan-btn .btn-outline{width:100%}

/* ===== News ===== */
.section-news{background:var(--color-bg-sunken);position:relative}
.section-news::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.2),transparent);
}
.news-card-featured{
  display:block;background:var(--color-bg-elevated);
  border:1px solid var(--color-line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.news-card-featured:hover{border-color:rgba(201,168,108,.5);box-shadow:var(--shadow-hover)}
.news-card-featured .featured-img{display:block;overflow:hidden;aspect-ratio:16/9;background:var(--color-bg-sunken)}
.news-card-featured .featured-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card-featured:hover .featured-img img{transform:scale(1.03)}
.news-content{padding:28px}
.news-content h3{font-size:20px;font-weight:600;margin:12px 0 10px;color:var(--color-text);line-height:1.45}
.news-card-featured:hover .news-content h3{color:var(--color-primary)}
.news-content p{
  font-size:14px;color:var(--color-text-muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--color-text-muted)}
.news-meta time{color:var(--color-text-muted)}
.read-more{color:var(--color-primary);font-weight:500}
.news-card-item{
  display:flex;align-items:center;gap:16px;
  background:var(--color-bg-elevated);
  border:1px solid var(--color-line);border-radius:var(--radius-card);
  padding:16px;
  height:100%;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.news-card-item:hover{border-color:rgba(201,168,108,.5);box-shadow:var(--shadow-normal)}
.news-card-item img{width:120px;height:80px;object-fit:cover;border-radius:8px;flex-shrink:0}
.news-info{flex:1;min-width:0}
.news-info h4{
  font-size:16px;font-weight:600;color:var(--color-text);line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:8px;
}
.news-card-item:hover .news-info h4{color:var(--color-primary)}
.news-info time{font-size:13px;color:var(--color-text-muted)}
.news-empty{
  border:2px dashed var(--color-line);border-radius:var(--radius-card);
  padding:80px 24px;text-align:center;color:var(--color-text-muted);
}
.news-empty i{font-size:32px;margin-bottom:12px;display:block;color:var(--color-line-strong)}
.news-empty p{font-size:14px}

/* ===== FAQ ===== */
.section-faq{background:var(--color-bg)}
.section-faq::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.3),transparent);
}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--color-bg-elevated);
  border:1px solid var(--color-line);
  border-radius:var(--radius-card);
  margin-bottom:16px;
  overflow:hidden;
  transition:border-color .25s ease;
}
.faq-item:hover{border-color:rgba(201,168,108,.35)}
.faq-item.open{border-color:rgba(201,168,108,.5)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 28px;cursor:pointer;user-select:none;
  font-size:16px;font-weight:600;color:var(--color-text);
}
.faq-q .faq-icon{
  width:24px;height:24px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:var(--color-primary);
  transition:transform .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease;
  border-left:3px solid var(--color-primary);
  margin-left:28px;
  background:rgba(14,15,18,.6);
}
.faq-a-inner{padding:0 28px 20px 20px;font-size:14px;color:var(--color-text-muted);line-height:1.75}

/* ===== CTA ===== */
.section-cta{
  background:var(--color-bg-sunken);
  position:relative;overflow:hidden;
}
.section-cta::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.25),transparent);
}
.section-cta::after{
  content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  width:600px;height:300px;pointer-events:none;
  background:radial-gradient(circle,rgba(201,168,108,.07),transparent 70%);
}
.cta-inner{max-width:720px;margin:0 auto;text-align:center;position:relative;z-index:2}
.cta-inner h2{font-size:32px;font-weight:700;margin-bottom:36px}
.cta-form{
  display:flex;gap:16px;max-width:560px;margin:0 auto;
}
.cta-form input{
  flex:1;background:var(--color-bg-elevated);
  border:1px solid var(--color-line);border-radius:var(--radius-btn);
  height:48px;padding:0 18px;color:var(--color-text);
  font-size:15px;transition:border-color .25s ease,box-shadow .25s ease;
}
.cta-form input::placeholder{color:var(--color-text-muted);opacity:.7}
.cta-form input:focus{
  outline:none;border-color:var(--color-primary);
  box-shadow:0 0 0 4px rgba(201,168,108,.15);
}
.cta-form input.has-error{border-color:#E05656}
.cta-error{font-size:13px;color:#E05656;margin-top:10px;display:none}
.cta-form-wrap .cta-error.show{display:block}
.cta-success{color:var(--color-primary);font-size:15px;margin-top:14px;display:none}
.cta-success.show{display:block}

/* ===== Footer ===== */
.site-footer{
  background:var(--color-bg-sunken);
  border-top:1px solid var(--color-line);
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,108,.35),transparent);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:36px;height:36px}
.footer-brand .brand-text{font-size:18px}
.footer-desc{font-size:14px;color:var(--color-text-muted);line-height:1.7;max-width:300px}
.footer-col h5{font-size:15px;font-weight:600;margin-bottom:20px;color:var(--color-text)}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--color-text-muted);transition:color .25s ease}
.footer-col ul a:hover{color:var(--color-primary)}
.footer-bottom{
  border-top:1px solid var(--color-line);
  padding:24px 0;text-align:center;margin-top:56px;
  font-size:13px;color:var(--color-text-muted);
}

/* ===== Back to top ===== */
.back-to-top{
  position:fixed;right:28px;bottom:28px;z-index:999;
  width:44px;height:44px;border-radius:50%;
  background:var(--color-bg-elevated);
  border:1px solid var(--color-primary);color:var(--color-primary);
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(20px);pointer-events:none;
  transition:all .3s ease;
  font-size:16px;
}
.back-to-top.show{opacity:1;transform:translateY(0);pointer-events:auto}
.back-to-top:hover{background:rgba(201,168,108,.1);box-shadow:var(--shadow-gold)}

/* ===== Responsive ===== */
@media(max-width:1199px){
  .hero-inner{gap:40px}
  .site-hero h1{font-size:44px}
}
@media(max-width:991px){
  :root{--section-space:72px}
  .site-header .navbar-collapse{
    background:var(--color-bg-elevated);
    border:1px solid var(--color-line);
    border-radius:var(--radius-card);
    padding:20px 16px;margin-top:12px;
  }
  .site-header .navbar-nav{flex-direction:column;gap:4px;margin-bottom:16px}
  .site-header .nav-link{padding:10px 14px !important}
  .site-header .nav-link.active::after{display:none}
  .nav-cta{margin-left:0;display:flex;gap:12px}
  .nav-cta .btn{flex:1}
  .hero-inner{grid-template-columns:1fr;text-align:left;padding:40px 0 64px}
  .hero-mockup{display:none}
  .site-hero{min-height:auto;height:auto;padding-top:120px}
  .site-hero h1{font-size:40px}
  .timeline::before{left:24px;transform:none}
  .timeline-item,.timeline-item.left,.timeline-item.right{
    width:100%;left:0;padding:0 0 44px 60px;text-align:left;
  }
  .timeline-item.left .timeline-marker,.timeline-item.right .timeline-marker{left:18px;right:auto}
}
@media(max-width:767px){
  :root{--section-space:56px}
  .site-hero{padding-top:100px}
  .site-hero h1{font-size:32px;line-height:1.3}
  .hero-subtitle{font-size:16px}
  .hero-actions .btn{flex:1;min-width:140px}
  .hero-trust{justify-content:flex-start}
  .hero-trust li{font-size:12px}
  .section-head h2{font-size:26px}
  .section-head{margin-bottom:36px}
  .plan-card.featured{transform:none}
  .plans-note{font-size:12px}
  .news-card-featured .news-content{padding:20px}
  .news-card-featured .news-content h3{font-size:18px}
  .news-card-item img{width:90px;height:66px}
  .news-info h4{font-size:14px}
  .cta-inner h2{font-size:24px}
  .cta-form{flex-direction:column;gap:12px}
  .cta-form .btn-gold{width:100%}
  .footer-bottom{margin-top:40px}
  .footer-col{margin-bottom:32px}
  .back-to-top{right:16px;bottom:16px;width:40px;height:40px}
}
@media(max-width:520px){
  .site-hero h1{font-size:28px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-trust{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-trust li + li::before{display:none}
  .section-head h2{font-size:22px}
  .timeline-item,.timeline-item.left,.timeline-item.right{padding-left:52px}
  .timeline-card{padding:18px}
  .highlight-card{padding:24px 20px}
  .plan-body{padding:0 20px}
  .news-card-item{flex-direction:column;align-items:flex-start}
  .news-card-item img{width:100%;height:120px}
  .brand-text{font-size:16px}
  .brand-badge{font-size:10px;padding:2px 8px}
}

/* roulang page: category1 */
/* ============ Design Variables ============ */
        :root {
            --color-bg: #0E0F12;
            --color-bg-elevated: #171920;
            --color-bg-sunken: #0A0B0E;
            --color-primary: #C9A86C;
            --color-primary-hover: #D9BC85;
            --color-accent: #A32638;
            --color-text: #EAE6DE;
            --color-text-muted: #9A968E;
            --color-line: #2A2C33;
            --color-line-strong: #3A3D45;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --radius-input: 8px;
            --shadow-card: 0 8px 24px rgba(0,0,0,.45);
            --shadow-card-hover: 0 12px 36px rgba(0,0,0,.6);
            --shadow-gold: 0 0 0 1px rgba(201,168,108,.25), 0 8px 30px rgba(201,168,108,.12);
            --spacer-section: 96px;
            --spacer-card: 28px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
        }

        /* ============ Reset / Base ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button, input, textarea {
            font-family: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            padding: 0 24px;
        }

        /* ============ Background Texture ============ */
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(circle at 80% 20%, rgba(201,168,108,.07), transparent 45%),
                radial-gradient(circle at 15% 85%, rgba(163,38,56,.05), transparent 40%);
        }
        .site-header, .site-footer, main {
            position: relative;
            z-index: 1;
        }

        /* ============ Buttons ============ */
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #121212;
            font-weight: 600;
            height: 44px;
            padding: 0 28px;
            border: none;
            border-radius: var(--radius-btn);
            letter-spacing: .05em;
            font-size: 14px;
            transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
        }
        .btn-gold:hover {
            background: var(--color-primary-hover);
            color: #121212;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(201,168,108,.25);
        }
        .btn-gold:active {
            transform: translateY(0);
        }
        .btn-gold.btn-sm {
            height: 40px;
            padding: 0 22px;
            font-size: 13px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: .05em;
            transition: background .25s ease;
        }
        .btn-outline:hover {
            background: rgba(201,168,108,.08);
            color: var(--color-primary-hover);
        }
        .btn-outline.btn-sm {
            height: 40px;
            padding: 0 22px;
            font-size: 13px;
        }

        /* ============ Badges ============ */
        .badge-gold {
            display: inline-block;
            background: var(--color-primary);
            color: #121212;
            font-size: 12px;
            padding: 2px 12px;
            border-radius: var(--radius-badge);
            font-weight: 600;
            line-height: 1.6;
        }
        .badge-accent {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            padding: 2px 12px;
            border-radius: var(--radius-badge);
            font-weight: 600;
            line-height: 1.6;
        }

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(14,15,18,.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-line);
        }
        .site-header .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: .02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .brand-badge {
            display: inline-block;
            background: var(--color-primary);
            color: #121212;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: var(--radius-badge);
            letter-spacing: .03em;
            white-space: nowrap;
        }
        .navbar-nav {
            gap: 6px;
        }
        .nav-item .nav-link {
            color: var(--color-text-muted);
            font-size: 15px;
            font-weight: 400;
            padding: 8px 16px;
            border-radius: 6px;
            position: relative;
            transition: color .25s ease;
        }
        .nav-item .nav-link:hover {
            color: var(--color-text);
        }
        .nav-item .nav-link.active {
            color: var(--color-text);
            font-weight: 500;
        }
        .nav-item .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 16px;
        }
        .navbar-toggler {
            border: 1px solid var(--color-line);
            border-radius: 8px;
            padding: 6px 8px;
            background: transparent;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23C9A86C' stroke-width='2' stroke-linecap='round'%3E%3Cline x1='3' y1='6' x2='21' y2='6'/%3E%3Cline x1='3' y1='12' x2='21' y2='12'/%3E%3Cline x1='3' y1='18' x2='21' y2='18'/%3E%3C/svg%3E");
            width: 22px;
            height: 22px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(201,168,108,.2);
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--color-bg-elevated);
                border: 1px solid var(--color-line);
                border-radius: var(--radius-card);
                padding: 16px;
                margin-top: 12px;
            }
            .navbar-nav {
                gap: 4px;
            }
            .nav-item .nav-link {
                padding: 10px 12px;
            }
            .nav-item .nav-link.active::after {
                left: 12px;
                right: auto;
                width: 2px;
                height: auto;
                top: 8px;
                bottom: 8px;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 14px;
                padding-top: 14px;
                border-top: 1px solid var(--color-line);
                display: flex;
                gap: 12px;
            }
            .nav-cta .btn {
                flex: 1;
            }
        }

        /* ============ Page Hero (Category Small Hero) ============ */
        .page-hero {
            background:
                linear-gradient(180deg, rgba(14,15,18,.88), rgba(14,15,18,.96)),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 76px 0 64px;
            border-bottom: 1px solid var(--color-line);
            position: relative;
        }
        .page-hero .gold-bar {
            width: 24px;
            height: 4px;
            background: var(--color-primary);
            border-radius: 2px;
            margin-bottom: 16px;
        }
        .page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: .02em;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .page-hero h1 .highlight {
            color: var(--color-primary);
        }
        .page-hero .hero-sub {
            font-size: 15px;
            color: var(--color-text-muted);
            max-width: 560px;
            line-height: 1.7;
        }
        @media (max-width: 767.98px) {
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero .hero-sub {
                font-size: 14px;
            }
        }

        /* ============ Breadcrumb ============ */
        .breadcrumb-wrap {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-line);
            background: var(--color-bg-sunken);
        }
        .breadcrumb {
            margin: 0;
            background: transparent;
            padding: 0;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color .25s;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-item + .breadcrumb-item::before {
            content: "/";
            color: var(--color-line-strong);
            padding: 0 8px;
        }
        .breadcrumb-item.active {
            color: var(--color-text);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 280px;
        }

        /* ============ Main Layout ============ */
        .category-main {
            padding: 72px 0 96px;
        }
        .category-grid {
            display: grid;
            grid-template-columns: 8fr 4fr;
            gap: 40px;
            align-items: start;
        }
        @media (max-width: 991.98px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .category-main {
                padding: 48px 0 64px;
            }
        }

        /* ============ Service Cards (Left Image Right Text) ============ */
        .service-cards {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .service-card {
            display: grid;
            grid-template-columns: 220px 1fr;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .service-card:hover {
            border-color: rgba(201,168,108,.5);
            box-shadow: var(--shadow-card-hover);
        }
        .service-card .card-img {
            position: relative;
            overflow: hidden;
            min-height: 180px;
            background: var(--color-bg-sunken);
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform .4s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.04);
        }
        .service-card .card-body {
            padding: 28px 32px 24px;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .service-card .card-time {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .service-card .card-title {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 10px;
            transition: color .25s;
        }
        .service-card .card-title:hover {
            color: var(--color-primary);
        }
        .service-card .card-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .service-card .card-link {
            margin-top: auto;
            font-size: 14px;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .25s ease;
        }
        .service-card .card-link:hover {
            gap: 8px;
            color: var(--color-primary-hover);
        }
        @media (max-width: 767.98px) {
            .service-card {
                grid-template-columns: 1fr;
            }
            .service-card .card-img {
                min-height: 180px;
                height: 180px;
            }
            .service-card .card-img img {
                position: absolute;
            }
            .service-card .card-body {
                padding: 22px 20px 20px;
            }
        }

        /* ============ Sidebar ============ */
        .sidebar-widget {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            padding: 28px 26px;
            margin-bottom: 24px;
        }
        .widget-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 18px;
            position: relative;
            padding-left: 14px;
        }
        .widget-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 3px;
            bottom: 3px;
            width: 3px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav a {
            display: block;
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--color-text-muted);
            border-left: 2px solid transparent;
            transition: background .25s, color .25s, border-color .25s;
        }
        .sidebar-nav a:hover {
            background: rgba(201,168,108,.06);
            color: var(--color-primary-hover);
        }
        .sidebar-nav a.active {
            background: rgba(201,168,108,.08);
            color: var(--color-primary);
            border-left-color: var(--color-primary);
            font-weight: 600;
        }
        .sidebar-recommend {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .recommend-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px;
            border-radius: 8px;
            transition: background .25s;
        }
        .recommend-item:hover {
            background: rgba(255,255,255,.03);
        }
        .recommend-thumb {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .recommend-item .rec-title {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .25s;
        }
        .recommend-item:hover .rec-title {
            color: var(--color-primary);
        }
        @media (max-width: 767.98px) {
            .sidebar-wrap {
                display: none;
            }
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: var(--color-bg-sunken);
            border-top: 1px solid var(--color-line);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(201,168,108,.12), transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 20px;
            letter-spacing: .02em;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-form .form-control {
            flex: 1;
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-input);
            color: var(--color-text);
            padding: 12px 16px;
            font-size: 14px;
            height: 48px;
            transition: border-color .25s, box-shadow .25s;
        }
        .cta-form .form-control::placeholder {
            color: var(--color-text-muted);
            opacity: .7;
        }
        .cta-form .form-control:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(201,168,108,.15);
            background: var(--color-bg-elevated);
            color: var(--color-text);
        }
        .cta-form .btn-gold {
            height: 48px;
            padding: 0 32px;
            flex-shrink: 0;
        }
        @media (max-width: 575.98px) {
            .cta-form {
                flex-direction: column;
            }
            .cta-form .btn-gold {
                width: 100%;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
        }

        /* ============ FAQ Section ============ */
        .faq-section {
            padding: 80px 0;
            background: var(--color-bg);
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .gold-bar {
            width: 24px;
            height: 4px;
            background: var(--color-primary);
            border-radius: 2px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: .02em;
        }
        .faq-accordion {
            max-width: 860px;
        }
        .faq-item {
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .25s ease;
        }
        .faq-item:hover {
            border-color: rgba(201,168,108,.35);
        }
        .faq-item[aria-expanded="true"] {
            border-color: rgba(201,168,108,.5);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            gap: 12px;
            transition: color .25s;
        }
        .faq-question:hover {
            color: var(--color-primary-hover);
        }
        .faq-question .icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: transform .3s ease;
        }
        .faq-item[aria-expanded="true"] .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.75;
            border-left: 3px solid transparent;
        }
        .faq-item[aria-expanded="true"] .faq-answer {
            border-left-color: var(--color-primary);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--color-bg-sunken);
            border-top: 1px solid var(--color-line);
            padding: 64px 0 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .site-footer .brand-text {
            font-size: 17px;
        }
        .site-footer .brand-badge {
            font-size: 10px;
            padding: 2px 6px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.75;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: .03em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 0;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color .25s;
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid var(--color-line);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        @media (max-width: 767.98px) {
            .site-footer {
                padding: 48px 0 0;
            }
            .footer-bottom {
                margin-top: 24px;
            }
        }

        /* ============ Back to Top ============ */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid var(--color-primary);
            background: var(--color-bg-elevated);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s, visibility .3s, box-shadow .3s;
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            box-shadow: var(--shadow-gold);
            color: var(--color-primary-hover);
        }

        /* ============ Responsive Breakpoints ============ */
        @media (max-width: 991.98px) {
            :root {
                --spacer-section: 72px;
            }
            .category-grid {
                gap: 24px;
            }
        }
        @media (max-width: 767.98px) {
            :root {
                --spacer-section: 56px;
            }
            .page-hero {
                padding: 44px 0 36px;
            }
            .service-card .card-body {
                padding: 20px 18px 18px;
            }
            .sidebar-wrap {
                display: none;
            }
            .faq-section, .cta-section {
                padding: 48px 0;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding: 0 16px;
            }
            .btn-gold, .btn-outline {
                height: 42px;
                padding: 0 20px;
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
  --color-bg: #0E0F12;
  --color-bg-elevated: #171920;
  --color-bg-sunken: #0A0B0E;
  --color-primary: #C9A86C;
  --color-primary-hover: #D9BC85;
  --color-accent: #A32638;
  --color-text: #EAE6DE;
  --color-text-muted: #9A968E;
  --color-line: #2A2C33;
  --color-line-strong: #3A3D45;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 8px 24px rgba(0,0,0,.45);
  --shadow-card-hover: 0 12px 36px rgba(0,0,0,.6);
  --shadow-gold: 0 0 0 1px rgba(201,168,108,.25), 0 8px 30px rgba(201,168,108,.12);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
.bg-texture {
  position: relative;
}
.bg-texture::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg' fill='none'%3E%3Cpath d='M60 10c10 12 10 30 0 44-10-14-10-32 0-44zm0 14c4 6 4 16 0 22-4-6-4-16 0-22z' fill='%23C9A86C' fill-opacity='.08'/%3E%3C/svg%3E");
  pointer-events: none;
}
.bg-glow::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 80% 20%, rgba(201,168,108,.07), transparent 45%);
  pointer-events: none;
}
/* header */
.site-header {
  background: rgba(14,15,18,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.site-header .navbar { padding-top: 14px; padding-bottom: 14px; }
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text);
}
.navbar-brand:hover { color: var(--color-text); }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(201,168,108,.1);
  border-radius: 8px;
  border: 1px solid rgba(201,168,108,.3);
}
.brand-text { display: inline-flex; align-items: center; gap: 8px; line-height: 1.2; }
.brand-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  background: var(--color-primary);
  color: #121212;
  border-radius: var(--radius-badge);
  padding: 2px 10px;
  letter-spacing: .02em;
}
.navbar-toggler {
  border: 1px solid var(--color-line);
  background: transparent;
  border-radius: 8px;
  padding: 6px 10px;
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(234,230,222,.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
  width: 1.25em;
  height: 1.25em;
}
.navbar-nav .nav-link {
  color: var(--color-text-muted);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px!important;
  margin: 0 4px;
  position: relative;
  transition: color .22s ease;
  letter-spacing: .02em;
}
.navbar-nav .nav-link:hover { color: var(--color-text); }
.navbar-nav .nav-link.active {
  color: var(--color-text);
}
.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.nav-cta { display: flex; gap: 12px; align-items: center; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-btn);
  letter-spacing: .03em;
  transition: all .22s ease;
  border: 0;
}
.btn-sm { height: 40px; padding: 0 22px; font-size: 14px; }
.btn-lg { height: 48px; padding: 0 32px; font-size: 16px; }
.btn-gold {
  background: var(--color-primary);
  color: #121212;
}
.btn-gold:hover {
  background: var(--color-primary-hover);
  color: #121212;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(201,168,108,.25);
}
.btn-gold:active { transform: translateY(0); box-shadow: none; }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover {
  background: rgba(201,168,108,.08);
  color: var(--color-primary);
}
.btn-outline:active { background: rgba(201,168,108,.12); }
.btn:focus-visible, a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}
/* footer */
.site-footer {
  background: var(--color-bg-sunken);
  border-top: 1px solid var(--color-line);
  padding: 64px 0 0;
  margin-top: 0;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-text);
  margin-bottom: 16px;
}
.footer-desc {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.footer-col h5 {
  color: var(--color-text);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 12px; }
.footer-col a {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color .2s ease;
}
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
  border-top: 1px solid var(--color-line);
  margin-top: 48px;
  padding: 20px 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
}
/* page hero */
.page-hero {
  background: var(--color-bg-sunken);
  padding: 92px 0 64px;
  position: relative;
  border-bottom: 1px solid var(--color-line);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,15,18,.4), rgba(14,15,18,.92)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: .35;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .section-bar {
  width: 24px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 16px;
}
.page-hero h1 {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0 0 12px;
  color: var(--color-text);
}
.page-hero .page-sub {
  color: var(--color-text-muted);
  font-size: 15px;
  max-width: 560px;
  line-height: 1.7;
}
/* cards */
.card-item {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.card-item:hover {
  border-color: rgba(201,168,108,.5);
  box-shadow: var(--shadow-card-hover);
}
.card-feature {
  padding: 34px 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(201,168,108,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 20px;
  margin-bottom: 20px;
}
.card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}
.card-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  flex-grow: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 500;
  margin-top: 20px;
  transition: gap .2s ease;
}
.card-link:hover { gap: 10px; color: var(--color-primary-hover); }
.card-link i { font-size: 13px; }
/* section spacing */
.section-block { padding: 88px 0; }
.section-head {
  margin-bottom: 40px;
}
.section-bar {
  width: 24px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0;
  color: var(--color-text);
}
.section-desc {
  color: var(--color-text-muted);
  font-size: 15px;
  margin-top: 12px;
  max-width: 640px;
}
/* info card horizontal */
.info-card {
  display: flex;
  gap: 20px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: border-color .25s ease, box-shadow .25s ease;
  height: 100%;
}
.info-card:hover {
  border-color: rgba(201,168,108,.5);
  box-shadow: var(--shadow-card-hover);
}
.info-card-img {
  width: 160px;
  height: 120px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  background: #111;
}
.info-card-body { flex: 1; display: flex; flex-direction: column; }
.info-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.info-card-body p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin: 0 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}
.info-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.badge-accent {
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  font-weight: 500;
}
.badge-gold {
  background: rgba(201,168,108,.15);
  color: var(--color-primary);
  font-size: 12px;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  font-weight: 500;
}
/* sidebar */
.sidebar-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 28px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.sidebar-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,168,108,.5), transparent);
}
.sidebar-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 3px solid var(--color-primary);
}
.sidebar-nav { list-style: none; padding: 0; margin: 0; }
.sidebar-nav li { margin-bottom: 4px; }
.sidebar-nav a {
  display: block;
  padding: 8px 12px;
  color: var(--color-text-muted);
  font-size: 14px;
  border-radius: 6px;
  border-left: 2px solid transparent;
  transition: all .2s ease;
}
.sidebar-nav a:hover {
  color: var(--color-primary);
  background: rgba(201,168,108,.06);
}
.sidebar-nav a.active {
  color: var(--color-primary);
  background: rgba(201,168,108,.08);
  border-left-color: var(--color-primary);
  font-weight: 500;
}
.sidebar-thumbs { display: flex; flex-direction: column; gap: 16px; }
.sidebar-thumb-row {
  display: flex;
  gap: 12px;
  align-items: center;
  transition: opacity .2s ease;
}
.sidebar-thumb-row:hover { opacity: .8; }
.sidebar-thumb-row img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  background: #111;
}
.sidebar-thumb-row .thumb-text {
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.thumb-time { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }

/* steps */
.step-row {
  display: flex;
  gap: 24px;
  align-items: stretch;
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(201,168,108,.12);
  border: 1px solid rgba(201,168,108,.4);
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 6px rgba(201,168,108,.06);
}
.step-content {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 28px;
  flex: 1;
  transition: border-color .25s ease;
}
.step-content:hover { border-color: rgba(201,168,108,.5); }
.step-content h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--color-text); }
.step-content p { font-size: 14px; color: var(--color-text-muted); margin: 0; line-height: 1.7; }

/* FAQ */
.faq-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .2s ease;
}
.faq-card:hover { border-color: rgba(201,168,108,.35); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  gap: 16px;
  background: transparent;
  border: 0;
  width: 100%;
  text-align: left;
}
.faq-q .icon { color: var(--color-primary); font-size: 18px; transition: transform .3s ease; flex-shrink: 0; }
.faq-card.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  padding: 0 24px;
}
.faq-a-inner {
  padding-bottom: 20px;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.75;
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
}

/* CTA */
.cta-section {
  background: var(--color-bg-sunken);
  border-top: 1px solid var(--color-line);
  padding: 88px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity: .18;
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  letter-spacing: .02em;
}
.cta-form {
  display: flex;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto;
}
.cta-form .form-control {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  color: var(--color-text);
  border-radius: var(--radius-btn);
  height: 48px;
  padding: 0 16px;
  font-size: 15px;
}
.cta-form .form-control::placeholder { color: rgba(154,150,142,.7); }
.cta-form .form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(201,168,108,.15);
  outline: none;
}
.cta-form .btn { height: 48px; padding: 0 28px; white-space: nowrap; }
@media (max-width: 576px) {
  .cta-form { flex-direction: column; }
}

/* responsive */
@media (max-width: 991px) {
  .navbar-collapse {
    background: var(--color-bg-elevated);
    padding: 20px;
    border-radius: var(--radius-card);
    border: 1px solid var(--color-line);
    margin-top: 12px;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    z-index: 100;
    box-shadow: var(--shadow-card);
  }
  .nav-cta { margin-top: 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .navbar-nav .nav-link.active::after { display: none; }
  .section-block { padding: 64px 0; }
  .sidebar-card { display: block; }
  .info-card-img { width: 130px; height: 100px; }
}
@media (max-width: 767px) {
  .page-hero { padding: 64px 0 48px; }
  .page-hero h1 { font-size: 28px; }
  .section-block { padding: 48px 0; }
  .section-head h2 { font-size: 24px; }
  .info-card { flex-direction: column; }
  .info-card-img { width: 100%; height: 160px; }
  .sidebar-card { display: none; }
  .step-row { flex-direction: column; gap: 16px; }
  .step-num { width: 36px; height: 36px; font-size: 15px; }
  .cta-section { padding: 56px 0; }
  .cta-inner h2 { font-size: 24px; }
}

/* roulang page: article */
:root {
  --color-bg: #0E0F12;
  --color-bg-elevated: #171920;
  --color-bg-sunken: #0A0B0E;
  --color-primary: #C9A86C;
  --color-primary-hover: #D9BC85;
  --color-accent: #A32638;
  --color-text: #EAE6DE;
  --color-text-muted: #9A968E;
  --color-line: #2A2C33;
  --color-line-strong: #3A3D45;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-pill: 999px;
  --shadow: 0 8px 24px rgba(0,0,0,.45);
  --shadow-hover: 0 12px 36px rgba(0,0,0,.6);
  --shadow-gold: 0 0 0 1px rgba(201,168,108,.25), 0 8px 30px rgba(201,168,108,.12);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(201,168,108,.07), transparent 45%);
  pointer-events: none;
  z-index: 0;
}
a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; }
.container { max-width: 1200px; position: relative; z-index: 1; }

/* 顶部导航 */
.site-header {
  background: rgba(14,15,18,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar { padding: 14px 0; }
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text) !important;
  letter-spacing: .02em;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: rgba(201,168,108,.12);
  border: 1px solid rgba(201,168,108,.3);
  border-radius: 8px;
  flex-shrink: 0;
}
.brand-text { font-weight: 700; }
.brand-badge {
  display: inline-block;
  background: var(--color-primary);
  color: #121212;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  margin-left: 6px;
  letter-spacing: .04em;
  vertical-align: middle;
}
.navbar-nav { gap: 4px; }
.nav-link {
  color: var(--color-text-muted) !important;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px !important;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.nav-link:hover,
.nav-link:focus { color: var(--color-text) !important; }
.nav-link.active {
  color: var(--color-text) !important;
  border-bottom-color: var(--color-primary);
}
.nav-cta { display: flex; gap: 10px; align-items: center; }
.navbar-toggler {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 6px 10px;
}
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(201,168,108,.25); }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23C9A86C' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-md);
  height: 44px;
  padding: 0 28px;
  letter-spacing: .05em;
  transition: all .25s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}
.btn-sm { height: 40px; padding: 0 22px; font-size: 14px; }
.btn-gold {
  background: var(--color-primary);
  color: #121212;
}
.btn-gold:hover,
.btn-gold:focus {
  background: var(--color-primary-hover);
  color: #121212;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn-gold:active { transform: translateY(0); box-shadow: none; }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover,
.btn-outline:focus {
  background: rgba(201,168,108,.08);
  color: var(--color-primary);
}
.btn-outline:active { background: rgba(201,168,108,.15); }

/* 面包屑 */
.article-breadcrumb {
  padding: 28px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
}
.article-breadcrumb a { color: var(--color-text-muted); }
.article-breadcrumb a:hover { color: var(--color-primary); }
.article-breadcrumb .sep { margin: 0 8px; color: var(--color-line-strong); }
.article-breadcrumb .breadcrumb-current {
  color: var(--color-text);
  display: inline-block;
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: bottom;
}

/* 文章主区 */
.article-layout { padding: 32px 0 72px; }
.article-main {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow);
}
.article-category {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 14px;
  border-radius: var(--radius-pill);
  letter-spacing: .03em;
}
.article-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  margin: 16px 0 12px;
  letter-spacing: .02em;
  word-break: break-word;
}
.article-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.article-meta .dot { color: var(--color-line-strong); }
.article-divider {
  border: 0;
  border-top: 1px solid var(--color-line);
  margin: 24px 0;
}
.article-cover {
  width: 100%;
  border-radius: var(--radius-lg);
  margin: 24px 0 0;
  box-shadow: var(--shadow);
}
.article-content {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--color-text);
  margin-top: 28px;
  word-break: break-word;
}
.article-content p { margin-bottom: 24px; }
.article-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 48px 0 20px;
  color: var(--color-text);
  position: relative;
  padding-left: 14px;
}
.article-content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}
.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--color-text);
}
.article-content img {
  width: 100%;
  border-radius: var(--radius-lg);
  margin: 32px 0;
}
.article-content blockquote {
  border-left: 3px solid var(--color-primary);
  background: var(--color-bg);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  margin: 28px 0;
  color: var(--color-text-muted);
}
.article-content ul,
.article-content ol { padding-left: 0; margin-bottom: 24px; list-style: none; }
.article-content li {
  padding-left: 22px;
  position: relative;
  margin-bottom: 14px;
}
.article-content ul li::before {
  content: "•";
  color: var(--color-primary);
  position: absolute;
  left: 4px;
  font-size: 18px;
}
.article-content ol { counter-reset: art-ol; }
.article-content ol li { counter-increment: art-ol; }
.article-content ol li::before {
  content: counter(art-ol) ".";
  color: var(--color-primary);
  position: absolute;
  left: 2px;
  font-weight: 600;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--color-line);
  padding: 12px 16px;
  text-align: left;
}
.article-content th { background: var(--color-bg-sunken); color: var(--color-primary); font-weight: 600; }
.article-back {
  display: inline-block;
  margin-top: 40px;
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  transition: all .25s ease;
}
.article-back:hover { padding-left: 4px; color: var(--color-primary-hover); }

/* 空态 */
.article-empty {
  text-align: center;
  padding: 80px 0;
  background: var(--color-bg-elevated);
  border: 1px dashed var(--color-line-strong);
  border-radius: var(--radius-lg);
}
.article-empty .empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}
.article-empty h1 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}
.article-empty p { color: var(--color-text-muted); font-size: 15px; margin-bottom: 20px; }

/* 侧边栏 */
.sidebar-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.sidebar-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 18px;
  position: relative;
  padding-left: 14px;
}
.sidebar-card h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 2px;
}
.sidebar-nav { list-style: none; padding: 0; margin: 0; }
.sidebar-nav li { margin-bottom: 4px; }
.sidebar-nav a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text-muted);
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  transition: all .2s ease;
}
.sidebar-nav a:hover { color: var(--color-primary); background: rgba(201,168,108,.05); }
.sidebar-nav a.is-current {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: rgba(201,168,108,.06);
  font-weight: 600;
}
.related-list { list-style: none; padding: 0; margin: 0; }
.related-item {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
  align-items: flex-start;
}
.related-item:last-child { border-bottom: none; padding-bottom: 4px; }
.related-thumb {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--color-line);
}
.related-item h4 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.55;
  margin: 0 0 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s ease;
}
.related-item:hover h4 { color: var(--color-primary); }
.related-item time { font-size: 12px; color: var(--color-text-muted); }

/* FAQ 板块 */
.faq-section { padding: 72px 0; background: var(--color-bg-sunken); border-top: 1px solid var(--color-line); }
.section-title {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: .02em;
  color: var(--color-text);
}
.section-title::before {
  content: "";
  display: block;
  width: 24px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 16px;
}
.section-sub { font-size: 14px; color: var(--color-text-muted); margin-bottom: 32px; }
.accordion-item {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line) !important;
  border-radius: var(--radius-lg) !important;
  margin-bottom: 14px;
  overflow: hidden;
}
.accordion-button {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  font-weight: 600;
  font-size: 16px;
  padding: 20px 24px;
  border: none;
  transition: background .2s ease, color .2s ease;
}
.accordion-button:not(.collapsed) {
  color: var(--color-primary);
  background: var(--color-bg-elevated);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(201,168,108,.2);
  border-radius: var(--radius-lg);
}
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C9A86C'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C9A86C'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.accordion-body {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.8;
  padding: 0 24px 20px;
  border-left: 3px solid var(--color-primary);
  margin: 0 20px 0 24px;
  border-radius: 0 0 4px 4px;
}

/* CTA 板块 */
.cta-section { padding: 72px 0; background: var(--color-bg-sunken); border-top: 1px solid var(--color-line); }
.cta-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}
.cta-inner p { color: var(--color-text-muted); font-size: 14px; margin-bottom: 28px; }
.cta-form { display: flex; gap: 12px; max-width: 520px; margin: 0 auto; }
.cta-form .form-control {
  flex: 1;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--color-text);
  font-size: 15px;
  height: 48px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.cta-form .form-control::placeholder { color: var(--color-text-muted); opacity: .7; }
.cta-form .form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(201,168,108,.15);
}
.cta-form .form-control.is-invalid {
  border-color: #E05656;
  box-shadow: 0 0 0 4px rgba(224,86,86,.12);
}
.cta-form .btn { height: 48px; flex-shrink: 0; }
.form-error {
  margin-top: 12px;
  font-size: 13px;
  color: #E05656;
  text-align: left;
}
.form-success {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-primary);
  text-align: center;
}

/* 页脚 */
.site-footer {
  background: var(--color-bg-sunken);
  border-top: 1px solid var(--color-line);
  padding: 56px 0 24px;
  position: relative;
  z-index: 1;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-brand .brand-mark { width: 30px; height: 30px; }
.footer-brand .brand-text { font-size: 16px; }
.footer-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 0;
  max-width: 300px;
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: color .2s ease;
}
.footer-col ul a:hover { color: var(--color-primary); }
.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding-top: 24px;
  margin-top: 40px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* 回到顶部 */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  background: rgba(14,15,18,.88);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  z-index: 999;
  transition: all .25s ease;
  box-shadow: var(--shadow);
}
.back-to-top:hover {
  background: rgba(201,168,108,.15);
  transform: translateY(-2px);
}

/* 响应式 */
@media (max-width: 991.98px) {
  .navbar-nav { gap: 0; padding: 8px 0; }
  .nav-cta { margin-top: 10px; padding-bottom: 8px; }
  .article-layout .col-lg-4 { margin-top: 32px; }
}
@media (max-width: 767.98px) {
  .article-main { padding: 24px 20px; }
  .article-title { font-size: 24px; }
  .article-content { font-size: 15.5px; }
  .faq-section,
  .cta-section { padding: 48px 0; }
  .cta-form { flex-direction: column; }
  .cta-form .btn { width: 100%; }
  .site-footer { padding: 40px 0 20px; }
  .article-breadcrumb { padding: 20px 0 0; font-size: 12px; }
  .related-thumb { width: 68px; height: 52px; }
}
@media (max-width: 519.98px) {
  .brand-text { font-size: 16px; }
  .brand-badge { font-size: 10px; padding: 1px 6px; }
  .article-main { padding: 20px 16px; }
  .article-title { font-size: 21px; }
  .sidebar-card { padding: 18px; }
}

/* roulang page: category3 */
:root {
  --color-bg: #0E0F12;
  --color-bg-elevated: #171920;
  --color-bg-sunken: #0A0B0E;
  --color-primary: #C9A86C;
  --color-primary-hover: #D9BC85;
  --color-accent: #A32638;
  --color-text: #EAE6DE;
  --color-text-muted: #9A968E;
  --color-line: #2A2C33;
  --color-line-strong: #3A3D45;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-normal: 0 8px 24px rgba(0, 0, 0, .45);
  --shadow-hover: 0 12px 36px rgba(0, 0, 0, .6);
  --shadow-gold: 0 0 0 1px rgba(201, 168, 108, .25), 0 8px 30px rgba(201, 168, 108, .12);
  --space-section: 96px;
  --font-stack: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--color-primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--color-primary-hover); }
img { max-width: 100%; height: auto; }
button { font-family: inherit; }

h1, h2, h3, h4, h5, h6 { margin: 0 0 .5em; font-weight: 700; color: var(--color-text); }
p { margin: 0 0 1rem; }

.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }

.section-padding { padding: var(--space-section) 0; }
@media (max-width: 991px) { .section-padding { padding: 72px 0; } }
@media (max-width: 767px) { .section-padding { padding: 56px 0; } }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-btn);
  font-weight: 600;
  letter-spacing: .03em;
  transition: all .25s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-gold {
  background: var(--color-primary);
  color: #121212;
  height: 48px;
  padding: 0 28px;
  box-shadow: 0 4px 12px rgba(201, 168, 108, .2);
}
.btn-gold:hover {
  background: var(--color-primary-hover);
  color: #121212;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(201, 168, 108, .3);
}
.btn-gold:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  height: 48px;
  padding: 0 28px;
}
.btn-outline:hover {
  background: rgba(201, 168, 108, .08);
  color: var(--color-primary);
  border-color: var(--color-primary-hover);
}
.btn-lg { height: 52px; padding: 0 40px; font-size: 16px; }
.btn-sm { height: 40px; padding: 0 24px; font-size: 14px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(14, 15, 18, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
}

.navbar { padding: 14px 0; }
.navbar-brand { display: flex; align-items: center; gap: 10px; padding: 0; }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(201, 168, 108, .1);
  border-radius: 8px;
  border: 1px solid rgba(201, 168, 108, .3);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: .02em;
  white-space: nowrap;
}

.brand-badge {
  display: inline-block;
  background: var(--color-primary);
  color: #121212;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-badge);
  margin-left: 6px;
  vertical-align: 3px;
  line-height: 1.4;
}

.navbar-nav { gap: 4px; }

.nav-link {
  color: var(--color-text-muted);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 18px !important;
  border-radius: 6px;
  position: relative;
  transition: color .25s ease;
}
.nav-link:hover { color: var(--color-text); }
.nav-link.active {
  color: var(--color-text);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

.nav-cta { display: flex; align-items: center; gap: 12px; margin-left: 16px; }
.nav-cta .btn { height: 40px; }

.navbar-toggler {
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 6px 10px;
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23C9A86C' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

@media (max-width: 991px) {
  .navbar-collapse {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-card);
    padding: 16px;
    margin-top: 12px;
  }
  .navbar-nav { gap: 0; }
  .nav-link { padding: 10px 16px !important; }
  .nav-link.active::after { display: none; }
  .nav-cta { margin-left: 0; margin-top: 14px; gap: 10px; }
  .nav-cta .btn { flex: 1; height: 44px; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-sunken);
  border-top: 1px solid var(--color-line);
  padding: 64px 0 24px;
}

.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .brand-text { font-size: 18px; }

.footer-desc {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.75;
  max-width: 320px;
  margin-bottom: 0;
}

.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 18px;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color .25s ease;
}
.footer-col ul a:hover { color: var(--color-primary); }

.footer-bottom {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13px;
  padding-top: 32px;
  margin-top: 48px;
  border-top: 1px solid var(--color-line);
}

@media (max-width: 767px) {
  .site-footer { padding: 48px 0 24px; }
  .footer-col { margin-bottom: 24px; }
}

/* ===== Page Hero ===== */
.page-hero {
  background: var(--color-bg-sunken);
  padding: 80px 0 64px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201, 168, 108, .08), transparent 60%);
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .18;
  pointer-events: none;
}

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

.hero-kicker {
  display: inline-block;
  width: 24px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 20px;
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.page-hero .lead {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 28px;
  line-height: 1.8;
}

@media (max-width: 767px) {
  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 32px; }
}

/* ===== Cards ===== */
.card-custom {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: border-color .25s ease, box-shadow .25s ease;
  height: 100%;
}
.card-custom:hover {
  border-color: rgba(201, 168, 108, .5);
  box-shadow: var(--shadow-hover);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(201, 168, 108, .12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg { width: 22px; height: 22px; stroke: var(--color-primary); }

.card-custom h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

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

.card-link {
  font-size: 14px;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}
.card-link i { transition: transform .25s ease; }
.card-link:hover i { transform: translateX(4px); }

/* ===== Section Headings ===== */
.section-heading { margin-bottom: 48px; }
.section-heading .bar {
  width: 24px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 14px;
}
.section-heading h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: .02em;
}
.section-heading .sub {
  font-size: 14px;
  color: var(--color-text-muted);
  max-width: 560px;
}

@media (max-width: 767px) {
  .section-heading h2 { font-size: 26px; }
}

/* ===== Feature Grid ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 991px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 575px) { .feature-grid { grid-template-columns: 1fr; } }

/* ===== Download Methods ===== */
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 991px) { .method-grid { grid-template-columns: 1fr; gap: 20px; } }

.method-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  text-align: center;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.method-card:hover { border-color: rgba(201, 168, 108, .5); box-shadow: var(--shadow-hover); }

.method-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(201, 168, 108, .12);
  border: 1px solid rgba(201, 168, 108, .3);
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.method-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.method-card p { font-size: 14px; color: var(--color-text-muted); margin-bottom: 0; }

/* ===== Process Timeline ===== */
.process-section {
  background: var(--color-bg-sunken);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-line);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  padding: 20px 0;
  display: flex;
  align-items: center;
}
.timeline-item:nth-child(odd) { flex-direction: row-reverse; }

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(201, 168, 108, .15);
  z-index: 2;
}

.timeline-content {
  width: 45%;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: border-color .25s ease;
}
.timeline-content:hover { border-color: rgba(201, 168, 108, .4); }

.timeline-content h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--color-text-muted); margin-bottom: 0; }

.timeline-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 12px;
}

@media (max-width: 767px) {
  .timeline::before { left: 12px; transform: none; }
  .timeline-item { padding-left: 40px; }
  .timeline-item:nth-child(odd) { flex-direction: row; }
  .timeline-dot { left: 12px; transform: translateX(-50%); }
  .timeline-content { width: 100%; }
}

/* ===== Security Panel ===== */
.security-panel {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.security-panel .row { margin: 0; }
.security-panel .security-img { padding: 0; }
.security-panel .security-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}
.security-content { padding: 48px 44px; }
.security-content h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.security-content .bar {
  width: 24px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-bottom: 20px;
}
.security-content .desc { font-size: 15px; color: var(--color-text-muted); line-height: 1.8; margin-bottom: 24px; }

.security-list { list-style: none; padding: 0; margin: 0 0 28px; }
.security-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 14px;
  line-height: 1.7;
}
.security-list li i { color: var(--color-primary); margin-top: 4px; font-size: 14px; }

@media (max-width: 767px) {
  .security-content { padding: 32px 24px; }
}

/* ===== FAQ ===== */
.faq-wrap { max-width: 760px; margin: 0 auto; }

.faq-item {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  padding: 0;
  overflow: hidden;
  transition: border-color .25s ease;
}
.faq-item:hover { border-color: rgba(201, 168, 108, .4); }
.faq-item.open { border-color: rgba(201, 168, 108, .5); }

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 16px;
  font-weight: 600;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 16px;
  transition: color .25s ease;
}
.faq-question:hover { color: var(--color-primary); }
.faq-question i { font-size: 14px; color: var(--color-primary); transition: transform .3s ease; flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.75;
  border-left: 3px solid var(--color-primary);
  margin: 0 24px;
  padding-left: 16px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--color-bg-sunken);
  padding: 80px 0;
  text-align: center;
  border-top: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(201, 168, 108, .06), transparent 70%);
  pointer-events: none;
}
.cta-section .inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-section h2 { font-size: 28px; font-weight: 700; margin-bottom: 24px; }

.cta-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-form .form-control {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-btn);
  color: var(--color-text);
  height: 48px;
  padding: 0 16px;
  min-width: 280px;
  font-size: 15px;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.cta-form .form-control::placeholder { color: var(--color-text-muted); opacity: .7; }
.cta-form .form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(201, 168, 108, .15);
  outline: none;
  background: var(--color-bg-elevated);
  color: var(--color-text);
}

@media (max-width: 575px) {
  .cta-form { flex-direction: column; }
  .cta-form .form-control { min-width: 100%; width: 100%; }
  .cta-form .btn { width: 100%; }
}

/* ===== Back to Top ===== */
#backTop {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  background: rgba(14, 15, 18, .9);
  color: var(--color-primary);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
#backTop.show { opacity: 1; visibility: visible; }
#backTop:hover { background: var(--color-primary); color: #121212; }

/* ===== Badge ===== */
.badge-gold {
  display: inline-block;
  background: var(--color-primary);
  color: #121212;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  vertical-align: 2px;
}
.badge-accent {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
}

/* ===== Divider ===== */
.divider {
  height: 1px;
  background: var(--color-line);
  position: relative;
  overflow: visible;
}
.divider::after {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 168, 108, .3), transparent);
}

/* ===== Backpic Decor ===== */
.backpic-decor {
  position: relative;
  overflow: hidden;
}
.backpic-decor::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  opacity: .04;
  pointer-events: none;
  z-index: 0;
}
.backpic-decor .container { position: relative; z-index: 1; }

/* ===== Info strip ===== */
.info-strip {
  background: rgba(201, 168, 108, .04);
  border: 1px solid rgba(201, 168, 108, .15);
  border-radius: var(--radius-card);
  padding: 16px 24px;
  font-size: 13px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.info-strip i { color: var(--color-primary); }

/* ===== Version cards ===== */
.version-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
@media (max-width: 991px) {
  .version-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

.version-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  position: relative;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.version-card:hover { border-color: rgba(201, 168, 108, .4); }

.version-card.highlight {
  border: 1.5px solid var(--color-primary);
  box-shadow: var(--shadow-gold);
}
.version-card.highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: linear-gradient(135deg, rgba(201, 168, 108, .9), rgba(201, 168, 108, .4));
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  opacity: .12;
}

.version-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }

.version-price { margin: 16px 0 20px; }
.version-price .num { font-size: 40px; font-weight: 700; color: var(--color-primary); line-height: 1; }
.version-price .unit { font-size: 14px; color: var(--color-text-muted); margin-left: 4px; }

.version-list { list-style: none; padding: 0; margin: 0 0 24px; }
.version-list li {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.version-list li i { color: var(--color-primary); font-size: 13px; margin-top: 3px; }

.version-note {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 24px;
}

/* ===== Focus visible ===== */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}