/* roulang page: index */
:root{
  --gold:#C9A96A;
  --gold-light:#E8D5A3;
  --gold-dark:#A67C52;
  --bg:#0C0C0E;
  --bg-2:#121215;
  --bg-3:#17171A;
  --card:#141417;
  --text:#F5F3EF;
  --text-dim:rgba(255,255,255,0.72);
  --text-muted:rgba(255,255,255,0.5);
  --text-weak:rgba(255,255,255,0.35);
  --border:rgba(255,255,255,0.08);
  --border-hover:rgba(255,255,255,0.16);
  --border-gold:rgba(201,169,106,0.4);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-card:0 4px 20px rgba(0,0,0,0.2);
  --shadow-hover:0 16px 40px rgba(0,0,0,0.35);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  --font-serif:Georgia,"Playfair Display","Times New Roman",serif;
  --transition:.25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit}
input{font:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:52px;padding:0 28px;border-radius:12px;
  font-size:15px;font-weight:700;letter-spacing:.04em;
  transition:all var(--transition);
  cursor:pointer;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#D4B57A,#A67C52);
  color:#1A1A1A;box-shadow:0 8px 24px rgba(201,169,106,0.2);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(201,169,106,0.3);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,0.35);
  color:#fff;
}
.btn-ghost:hover{
  background:rgba(255,255,255,0.06);
  border-color:rgba(255,255,255,0.6);
  transform:translateY(-2px);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;border-radius:999px}
.badge{
  display:inline-flex;align-items:center;justify-content:center;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;
  color:var(--gold-light);
  border:1px solid var(--border-gold);
  background:rgba(201,169,106,0.06);
  white-space:nowrap;
}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(12,12,14,0.38);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,0.06);
  box-shadow:0 8px 32px rgba(0,0,0,0.15);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(10,10,12,0.92);
  border-color:rgba(255,255,255,0.08);
  box-shadow:0 12px 36px rgba(0,0,0,0.25);
}
.nav-wrap{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--gold-light),var(--gold-dark));
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:20px;font-weight:700;color:#1A1A1A;
}
.brand-text{
  font-size:18px;font-weight:800;letter-spacing:.02em;color:#fff;
}
.nav-links{
  display:flex;align-items:center;gap:34px;
}
.nav-link{
  position:relative;
  font-size:14px;letter-spacing:.06em;
  color:rgba(255,255,255,0.85);
  padding:30px 0 26px;transition:color var(--transition);
}
.nav-link::after{
  content:'';position:absolute;left:0;right:0;bottom:18px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--gold-light),var(--gold-dark));
  transform:scaleX(0);transform-origin:center;transition:transform var(--transition);
}
.nav-link:hover{color:var(--gold-light)}
.nav-link:hover::after,
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--gold-light)}
.nav-tools{
  display:flex;align-items:center;gap:16px;flex-shrink:0;
}
.search-toggle{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,0.85);transition:all var(--transition);
}
.search-toggle:hover{background:rgba(255,255,255,0.06);color:var(--gold-light)}
.nav-cta{display:inline-flex}
.hamburger{
  display:none;width:40px;height:40px;border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--border);
}
.hamburger span{
  width:18px;height:2px;background:#fff;border-radius:2px;
  transition:all .3s ease;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.header-search{
  background:rgba(10,10,12,0.96);
  border-top:1px solid var(--border);
  padding:16px 0;
}
.search-inner{
  display:flex;gap:12px;align-items:center;
}
.search-inner input{
  flex:1;height:40px;background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);border-radius:999px;
  padding:0 18px;color:#fff;font-size:14px;outline:none;
  transition:border-color var(--transition);
}
.search-inner input:focus{border-color:var(--gold)}
.search-inner input::placeholder{color:rgba(255,255,255,0.35)}
.mobile-menu{
  display:none;
  background:rgba(10,10,12,0.96);
  padding:24px 28px 32px;
  flex-direction:column;gap:6px;
  backdrop-filter:blur(18px);
  border-top:1px solid var(--border);
}
.mobile-menu.open{display:flex}
.mobile-links{display:flex;flex-direction:column;gap:4px}
.mobile-link{
  padding:14px 0;font-size:16px;font-weight:600;
  color:rgba(255,255,255,0.85);border-bottom:1px solid rgba(255,255,255,0.04);
}
.mobile-link.active,.mobile-link:hover{color:var(--gold-light)}
.mobile-cta{margin-top:18px}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:120px 0 80px;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  animation:heroZoom 12s ease-out forwards;
}
@keyframes heroZoom{
  from{transform:scale(1.06)}to{transform:scale(1)}
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:radial-gradient(ellipse at 30% 40%,rgba(12,12,14,0.2) 0%,rgba(12,12,14,0.72) 60%,rgba(12,12,14,0.9) 100%);
}
.hero-content{
  position:relative;z-index:2;max-width:820px;margin:0 auto 0 40px;
  animation:fadeUp .8s ease-out both;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--gold-light);
  padding:8px 18px;border-radius:999px;
  border:1px solid var(--border-gold);
  background:rgba(12,12,14,0.35);
  margin-bottom:24px;
}
.hero-eyebrow::before{
  content:'';width:16px;height:1px;background:var(--gold);
}
.hero h1{
  font-family:var(--font-sans);
  font-size:clamp(44px,7vw,84px);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;
  color:#fff;margin-bottom:20px;
}
.hero-sub{
  font-size:clamp(18px,2.2vw,26px);
  font-weight:400;line-height:1.65;
  color:var(--text-dim);max-width:560px;margin-bottom:40px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  font-size:13px;letter-spacing:.06em;color:rgba(255,255,255,0.5);
}
.hero-stats span{display:inline-flex;align-items:center;gap:22px}
.hero-stats span + span::before{
  content:'·';color:var(--gold);font-size:18px;
}
.scroll-down{
  position:absolute;bottom:28px;left:50%;transform:translateX(-50%);
  z-index:2;width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(255,255,255,0.25);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,0.6);font-size:20px;
  transition:all var(--transition);
  animation:bounceDown 2s infinite ease-in-out;
}
.scroll-down:hover{color:var(--gold-light);border-color:var(--gold)}
@keyframes bounceDown{
  0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}

/* ===== 区块标题 ===== */
.section-head{
  text-align:center;max-width:720px;margin:0 auto 56px;
}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--gold-light);
  padding:6px 16px;border-radius:999px;
  border:1px solid var(--border-gold);
  background:rgba(201,169,106,0.05);
  margin-bottom:16px;
}
.section-tag::before,.section-tag::after{
  content:'';width:14px;height:1px;background:var(--gold);
}
.section-head h2{
  font-size:clamp(28px,3.4vw,38px);
  font-weight:800;line-height:1.25;letter-spacing:-.02em;
  color:#fff;margin-bottom:12px;
}
.section-head p{color:var(--text-dim);font-size:16px}

/* ===== 合集目录 ===== */
.collection-section{
  background:var(--bg-2);
}
.collection-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:20px;
}
.collection-card{
  position:relative;display:block;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:20px;
  padding:32px;
  transition:all var(--transition);
  overflow:hidden;
}
.collection-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--border-gold),transparent);
  opacity:0;transition:opacity var(--transition);
}
.collection-card:hover{
  background:#1A1A1E;
  border-color:var(--border-gold);
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.collection-card:hover::before{opacity:1}
.collection-top{
  display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:22px;
}
.collection-num-cn{
  font-family:var(--font-serif);
  font-size:36px;line-height:1;
  color:var(--gold);
}
.collection-num-en{
  font-family:var(--font-serif);
  font-size:20px;color:rgba(255,255,255,0.25);
}
.collection-card h3{
  font-size:24px;font-weight:700;color:#fff;margin-bottom:10px;
}
.collection-card p{
  font-size:14px;color:var(--text-muted);line-height:1.7;
  max-width:240px;margin-bottom:20px;
}
.collection-arrow{
  font-size:22px;color:var(--gold-light);
  transition:transform var(--transition);
  display:inline-block;
}
.collection-card:hover .collection-arrow{transform:translateX(6px)}

/* ===== 最新资讯列表 ===== */
.news-section{background:var(--bg)}
.news-list{display:flex;flex-direction:column;gap:12px;max-width:960px;margin:0 auto}
.news-card{
  position:relative;display:flex;align-items:center;gap:24px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:20px 24px;
  transition:all var(--transition);
}
.news-card::before{
  content:'';position:absolute;left:0;top:22px;bottom:22px;width:3px;
  background:linear-gradient(180deg,var(--gold-light),var(--gold-dark));
  border-radius:3px;opacity:0;transition:opacity var(--transition);
}
.news-card:hover{
  background:rgba(255,255,255,0.03);
  border-color:var(--border-hover);
  box-shadow:var(--shadow-card);
  transform:translateY(-2px);
}
.news-card:hover::before{opacity:1}
.news-date{
  width:80px;height:80px;flex-shrink:0;
  background:#1A1A1E;border-radius:14px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;
}
.news-day{
  font-family:var(--font-serif);
  font-size:32px;font-weight:700;line-height:1;color:var(--gold);
}
.news-month{
  font-family:var(--font-serif);
  font-size:12px;color:rgba(255,255,255,0.4);letter-spacing:.08em;
}
.news-main{
  flex:1;min-width:0;
}
.news-title{
  font-size:18px;font-weight:700;color:#fff;
  margin-bottom:6px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a{transition:color var(--transition)}
.news-title a:hover{color:var(--gold-light)}
.news-excerpt{
  font-size:14px;color:rgba(255,255,255,0.55);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:8px;
}
.news-more{
  flex-shrink:0;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--gold-light);
  transition:transform var(--transition);
}
.news-more:hover{transform:translateX(6px)}
.section-foot{text-align:center;margin-top:40px}
.empty-state{
  text-align:center;padding:60px 0;
  font-size:15px;color:rgba(255,255,255,0.4);
  background:var(--bg-2);border-radius:var(--radius-lg);
  border:1px dashed var(--border-hover);
}

/* ===== 推荐专题 ===== */
.recommend-section{background:var(--bg-2)}
.recommend-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.topic-card{
  display:block;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;transition:all var(--transition);
}
.topic-card:hover{
  border-color:var(--border-gold);
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.topic-cover{
  position:relative;height:200px;overflow:hidden;
}
.topic-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s ease;
}
.topic-card:hover .topic-cover img{transform:scale(1.06)}
.topic-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,0.45));
}
.topic-body{padding:24px 24px 28px}
.topic-body h3{
  font-size:20px;font-weight:700;color:#fff;line-height:1.4;
  margin:12px 0 8px;
}
.topic-body p{
  font-size:14px;color:var(--text-muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ===== FAQ ===== */
.faq-section{background:var(--bg)}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:24px 28px;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.faq-item:hover{border-color:rgba(201,169,106,0.2)}
.faq-question{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
  text-align:left;
}
.faq-q-text{
  font-size:20px;font-weight:600;color:var(--text);line-height:1.4;
}
.faq-icon{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  border:1px solid var(--border-gold);
  color:var(--gold-light);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:300;line-height:1;
  transition:transform .3s ease,background .3s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:var(--gold);color:#1A1A1A;
}
.faq-answer{
  max-height:0;overflow:hidden;
  font-size:15px;line-height:1.75;color:rgba(255,255,255,0.7);
  transition:max-height .35s ease,padding .35s ease;
}
.faq-item.open .faq-answer{
  max-height:420px;padding-top:22px;
}

/* ===== CTA ===== */
.cta-section{background:var(--bg-2);padding-bottom:96px}
.cta-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0C0C0E 0%,#1D1A14 55%,#3A2C1A 100%);
  border:1px solid rgba(201,169,106,0.2);
  border-radius:32px;
  padding:80px 40px;text-align:center;
}
.cta-panel::before{
  content:'';position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.08;
}
.cta-content{position:relative;z-index:2}
.cta-ring{
  position:absolute;width:440px;height:440px;border-radius:50%;
  border:1px solid rgba(201,169,106,0.15);
  top:50%;left:50%;transform:translate(-50%,-50%);
  animation:spinSlow 40s linear infinite;
  pointer-events:none;
}
.cta-ring::before{
  content:'';position:absolute;inset:40px;border-radius:50%;
  border:1px solid rgba(201,169,106,0.1);
}
@keyframes spinSlow{
  from{transform:translate(-50%,-50%) rotate(0deg)}
  to{transform:translate(-50%,-50%) rotate(360deg)}
}
.cta-content h2{
  font-size:clamp(26px,3.2vw,38px);
  font-weight:800;letter-spacing:-.02em;color:#fff;
  margin-bottom:14px;
}
.cta-content p{
  font-size:16px;color:rgba(255,255,255,0.6);
  max-width:460px;margin:0 auto 36px;
}
.cta-actions{
  display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;
}
.social-links{
  display:flex;align-items:center;gap:12px;margin-left:12px;
}
.social-btn{
  width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,0.2);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:rgba(255,255,255,0.8);
  transition:all var(--transition);
}
.social-btn:hover{
  border-color:var(--gold);color:var(--gold-light);
  background:rgba(201,169,106,0.08);
  transform:translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer{
  background:#0A0A0C;
  border-top:1px solid rgba(255,255,255,0.06);
  padding-top:72px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;
  padding-bottom:64px;
}
.footer-brand h3{
  font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;color:rgba(255,255,255,0.5);line-height:1.75;max-width:340px;
}
.footer-links h4,.footer-contact h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;
  letter-spacing:.05em;
}
.footer-links a{
  display:block;font-size:14px;color:rgba(255,255,255,0.55);
  padding:5px 0;transition:color var(--transition);
}
.footer-links a:hover{color:var(--gold-light)}
.footer-contact p{
  font-size:14px;color:rgba(255,255,255,0.55);padding:4px 0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.06);
  padding:28px 0 32px;text-align:center;
}
.footer-bottom p{
  font-size:13px;color:rgba(255,255,255,0.35);
  letter-spacing:.03em;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .recommend-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero-stats{gap:14px}
}
@media (max-width:768px){
  .container{padding:0 24px}
  .hero{padding:120px 0 64px}
  .hero-content{margin:0 24px}
  .collection-grid{grid-template-columns:1fr}
  .news-card{flex-wrap:wrap;gap:16px}
  .news-date{width:64px;height:64px}
  .news-day{font-size:26px}
  .news-more{width:100%;padding-left:80px}
  .recommend-grid{grid-template-columns:1fr}
  .cta-panel{padding:56px 24px}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:64px 0}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-content{margin:0 16px}
  .brand-text{font-size:16px}
  .nav-cta{padding:0 14px;height:36px;font-size:13px}
  .hero h1{font-size:44px}
  .hero-sub{font-size:18px}
  .hero-actions .btn{width:100%}
  .hero-stats{
    flex-direction:column;align-items:flex-start;
    gap:6px;
  }
  .hero-stats span{display:block}
  .hero-stats span + span::before{display:none}
  .collection-card{padding:24px}
  .collection-num-cn{font-size:30px}
  .collection-card h3{font-size:20px}
  .news-card{padding:16px}
  .news-date{width:52px;height:52px;border-radius:10px}
  .news-day{font-size:22px}
  .news-excerpt{display:none}
  .news-more{padding-left:0}
  .faq-item{padding:20px}
  .faq-q-text{font-size:17px}
  .cta-actions .btn{width:100%}
  .social-links{margin-left:0;width:100%;justify-content:center}
  .footer-bottom p{font-size:12px;padding:0 16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .hero-bg{animation:none}
  .scroll-down{animation:none}
  .cta-ring{animation:none}
}

/* roulang page: category1 */
:root {
            --primary: #C9A96A;
            --primary-light: #E8D5A3;
            --primary-dark: #A67C52;
            --bg: #0C0C0E;
            --bg-2: #121215;
            --bg-3: #17171A;
            --card-bg: #141417;
            --text: #F5F3EF;
            --text-secondary: rgba(255, 255, 255, 0.72);
            --text-muted: rgba(255, 255, 255, 0.5);
            --text-faint: rgba(255, 255, 255, 0.35);
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.16);
            --border-gold: rgba(201, 169, 106, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
            --shadow-gold: 0 8px 24px rgba(201, 169, 106, 0.2);
            --transition: 0.25s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-serif: Georgia, "Times New Roman", serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }

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

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

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

        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 12px;
            transition: all var(--transition);
            line-height: 1.2;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #D4B57A, #A67C52);
            color: #1A1A1A;
            font-weight: 700;
            box-shadow: var(--shadow-gold);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(201, 169, 106, 0.3);
        }

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

        .btn-secondary {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.35);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.6);
        }

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

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
            border-radius: var(--radius-full);
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(12, 12, 14, 0.38);
            backdrop-filter: blur(18px) saturate(150%);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 10, 12, 0.92);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 32px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, #D4B57A, #A67C52);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-size: 15px;
            font-weight: 700;
            color: #1A1A1A;
            letter-spacing: -0.02em;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text);
        }

        .logo-text span {
            color: var(--primary-light);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            letter-spacing: 0.06em;
            color: rgba(255, 255, 255, 0.85);
            padding: 8px 0;
            transition: color var(--transition);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }

        .nav-link:hover {
            color: var(--primary-light);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary-light);
        }

        .nav-link.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition);
        }

        .search-btn:hover {
            border-color: var(--border-gold);
            background: rgba(201, 169, 106, 0.08);
        }

        .search-btn svg {
            width: 17px;
            height: 17px;
            stroke: rgba(255, 255, 255, 0.85);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition);
        }

        .hamburger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text);
            transition: all 0.3s ease;
        }

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

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

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

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 100vh;
            background: rgba(10, 10, 12, 0.96);
            backdrop-filter: blur(20px);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
            padding: 80px 32px 40px;
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu a {
            font-size: 24px;
            font-weight: 600;
            color: var(--text);
            padding: 16px 0;
            letter-spacing: 0.04em;
            transition: color var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary-light);
        }

        .mobile-menu .btn {
            margin-top: 32px;
            font-size: 16px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            height: 360px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            background-color: var(--bg);
            padding-top: 72px;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 12, 14, 0.94) 0%, rgba(12, 12, 14, 0.82) 50%, rgba(12, 12, 14, 0.6) 100%);
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, rgba(12, 12, 14, 0.98), transparent);
        }

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

        .page-hero h1 {
            font-size: clamp(32px, 4vw, 52px);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 20px;
        }

        .page-hero h1 .highlight {
            color: var(--primary-light);
        }

        .hero-desc {
            max-width: 640px;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .hero-arrow {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            width: 36px;
            height: 36px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            animation: bounce 2s ease-in-out infinite;
            transition: border-color var(--transition);
        }

        .hero-arrow:hover {
            border-color: var(--border-gold);
        }

        .hero-arrow svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-secondary);
        }

        @keyframes bounce {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(6px);
            }
        }

        /* ===== Sections ===== */
        .section {
            padding: 96px 0;
        }

        .section-alt {
            background: var(--bg-2);
        }

        .section-header {
            margin-bottom: 56px;
            max-width: 720px;
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            height: 24px;
            padding: 0 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            border: 1px solid var(--border-gold);
            background: transparent;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(28px, 3vw, 38px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        /* ===== Topic Cards ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .topic-card {
            position: relative;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .topic-card-media {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: linear-gradient(135deg, #1A1A1E, #141417);
        }

        .topic-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .topic-card:hover .topic-card-media img {
            transform: scale(1.06);
        }

        .topic-card-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12, 12, 14, 0.6) 0%, transparent 50%);
            pointer-events: none;
        }

        .topic-card-media .topic-count {
            position: absolute;
            top: 16px;
            right: 16px;
            z-index: 2;
            background: rgba(12, 12, 14, 0.75);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
        }

        .topic-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-card-cat {
            font-size: 12px;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topic-card-cat::before {
            content: "";
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--primary);
        }

        .topic-card-title {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            transition: color var(--transition);
        }

        .topic-card:hover .topic-card-title {
            color: var(--primary-light);
        }

        .topic-card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            flex: 1;
        }

        .topic-card-link {
            margin-top: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
        }

        .topic-card-link svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            transition: transform var(--transition);
        }

        .topic-card:hover .topic-card-link {
            color: var(--primary-light);
        }

        .topic-card:hover .topic-card-link svg {
            transform: translateX(6px);
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-item {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 32px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .feature-item:hover {
            background: #1A1A1E;
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .feature-num {
            font-family: var(--font-serif);
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 20px;
            display: block;
        }

        .feature-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .feature-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* ===== Steps ===== */
        .steps-wrap {
            position: relative;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .step-item {
            position: relative;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-align: center;
        }

        .step-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .step-badge {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, #D4B57A, #A67C52);
            color: #1A1A1A;
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
        }

        .step-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .step-desc {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .steps-arrow {
            position: absolute;
            top: 50%;
            right: -32px;
            transform: translateY(-50%);
            color: var(--primary);
            opacity: 0.5;
            z-index: 2;
        }

        .steps-arrow svg {
            width: 20px;
            height: 20px;
            stroke: currentColor;
        }

        .steps-arrow:nth-of-type(1) {
            right: -32px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            padding: 24px 28px;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(201, 169, 106, 0.2);
        }

        .faq-item.active {
            border-color: rgba(201, 169, 106, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            cursor: pointer;
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            padding: 0;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            position: relative;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text-secondary);
            transition: all 0.3s ease;
        }

        .faq-icon::before {
            width: 10px;
            height: 1.5px;
        }

        .faq-icon::after {
            width: 1.5px;
            height: 10px;
        }

        .faq-item.active .faq-icon {
            border-color: var(--primary);
        }

        .faq-item.active .faq-icon::after {
            transform: scale(0);
            background: var(--primary);
        }

        .faq-item.active .faq-icon::before {
            background: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-top: 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 96px 0;
        }

        .cta-block {
            position: relative;
            background: linear-gradient(135deg, #0C0C0E 0%, #1D1A14 55%, #3A2C1A 100%);
            border: 1px solid rgba(201, 169, 106, 0.2);
            border-radius: 32px;
            padding: 80px 40px;
            text-align: center;
            overflow: hidden;
        }

        .cta-block::before {
            content: "";
            position: absolute;
            top: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            border: 1px solid rgba(201, 169, 106, 0.12);
            border-radius: 50%;
            pointer-events: none;
            animation: spin 30s linear infinite;
        }

        .cta-block::after {
            content: "";
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 260px;
            height: 260px;
            border: 1px solid rgba(201, 169, 106, 0.08);
            border-radius: 50%;
            pointer-events: none;
            animation: spin 45s linear infinite reverse;
        }

        @keyframes spin {
            from {
                transform: translateX(-50%) rotate(0deg);
            }
            to {
                transform: translateX(-50%) rotate(360deg);
            }
        }

        .cta-block .container-inner {
            position: relative;
            z-index: 2;
        }

        .cta-title {
            font-size: clamp(28px, 3.5vw, 44px);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 20px;
        }

        .cta-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 40px;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-social {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-top: 40px;
        }

        .cta-social .social-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            color: var(--text-secondary);
        }

        .cta-social .social-icon:hover {
            border-color: var(--border-gold);
            color: var(--primary-light);
            background: rgba(201, 169, 106, 0.06);
        }

        .cta-social .social-icon svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
            fill: none;
            stroke-width: 1.8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0A0A0C;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 64px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-muted);
            max-width: 360px;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--text);
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .footer-links a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 0;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary-light);
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 0;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 32px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 14px;
            color: var(--text-faint);
        }

        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }

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

        .reveal-delay-1 {
            transition-delay: 0.1s;
        }

        .reveal-delay-2 {
            transition-delay: 0.2s;
        }

        .reveal-delay-3 {
            transition-delay: 0.3s;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 24px;
            }

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

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

            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .steps-arrow {
                display: none;
            }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 24px;
            }

            .nav-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .header-cta {
                display: none;
            }

            .section {
                padding: 56px 0;
            }

            .page-hero {
                height: 400px;
            }

            .page-hero h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

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

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

            .steps-wrap {
                grid-template-columns: 1fr;
            }

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

            .cta-block {
                padding: 56px 24px;
                border-radius: 24px;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .faq-item {
                padding: 20px;
            }

            .faq-question {
                font-size: 16px;
            }

            .section-header {
                margin-bottom: 40px;
            }

            .page-hero .hero-desc {
                font-size: 14px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }

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

            .hero-arrow {
                animation: none;
            }

            .cta-block::before,
            .cta-block::after {
                animation: none;
            }
        }

/* roulang page: article */
:root {
  --primary: #C9A96A;
  --primary-light: #E8D5A3;
  --primary-dark: #A67C52;
  --bg-primary: #0C0C0E;
  --bg-secondary: #121215;
  --bg-tertiary: #17171A;
  --bg-card: #141417;
  --text-main: #F5F3EF;
  --text-secondary: rgba(255, 255, 255, 0.72);
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-weak: rgba(255, 255, 255, 0.35);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --gold-border: rgba(201, 169, 106, 0.4);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.35);
  --shadow-gold: 0 8px 24px rgba(201, 169, 106, 0.2);
  --ease: all 0.25s ease;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

input,
textarea {
  font-family: inherit;
}

::selection {
  background: rgba(201, 169, 106, 0.3);
  color: #fff;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--ease);
  text-decoration: none;
  border: 1px solid transparent;
  letter-spacing: 0.02em;
}

.btn:focus-visible {
  outline: 3px solid rgba(201, 169, 106, 0.45);
  outline-offset: 2px;
}

.btn-gold {
  background: linear-gradient(135deg, #D4B57A, #A67C52);
  color: #1A1A1A;
  font-weight: 700;
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(201, 169, 106, 0.3);
  color: #1A1A1A;
}

.btn-gold:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px rgba(201, 169, 106, 0.25);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-small {
  padding: 8px 20px;
  font-size: 13px;
  border-radius: 999px;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(12, 12, 14, 0.38);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.site-header.scrolled {
  background: rgba(10, 10, 12, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
}

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

.logo {
  font-family: 'Georgia', 'PingFang SC', 'Microsoft YaHei', serif;
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.04em;
  line-height: 1.2;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.logo:hover {
  color: var(--primary-light);
}

.logo .accent {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-link {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.85);
  padding: 8px 0;
  position: relative;
  transition: color 0.25s ease;
}

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

.nav-link:hover {
  color: var(--primary-light);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--primary-light);
}

.nav-link.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--ease);
}

.search-icon:hover {
  color: var(--primary-light);
  background: rgba(255, 255, 255, 0.06);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: 10px;
  transition: background 0.25s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}

.nav-toggle .icon-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

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

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

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 12, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 24px 32px 36px;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  z-index: 999;
}

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

.mobile-link {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.88);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: color 0.25s ease;
}

.mobile-link:hover {
  color: var(--primary-light);
}

.mobile-cta {
  margin-top: 20px;
}

/* ===== 文章头部 ===== */
main {
  padding-top: 72px;
}

.post-hero {
  position: relative;
  padding: 120px 0 72px;
  background: linear-gradient(rgba(12, 12, 14, 0.86), rgba(12, 12, 14, 0.94)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.25s ease;
}

.breadcrumb a:hover {
  color: var(--primary-light);
}

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.3);
}

.breadcrumb .current {
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 360px;
}

.post-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  margin-top: 32px;
}

.post-header-row h1 {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 820px;
  flex: 1;
}

.post-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  padding-top: 8px;
}

.post-actions button {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--ease);
}

.post-actions button:hover {
  color: var(--primary-light);
  border-color: var(--gold-border);
  background: rgba(201, 169, 106, 0.1);
  transform: translateY(-2px);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-muted);
}

.post-meta .meta-divider {
  color: rgba(255, 255, 255, 0.3);
}

.post-hero .post-hero-bottom {
  margin-top: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-border), transparent);
}

/* ===== 正文区 ===== */
.post-content-section {
  padding: 80px 0 96px;
  background: var(--bg-primary);
}

.post-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

.post-body {
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.82);
  letter-spacing: 0.01em;
}

.post-body > * + * {
  margin-top: 24px;
}

.post-body h2 {
  font-size: 26px;
  line-height: 1.4;
  font-weight: 700;
  color: #fff;
  margin-top: 48px;
  letter-spacing: -0.01em;
}

.post-body h3 {
  font-size: 20px;
  line-height: 1.5;
  font-weight: 700;
  color: #fff;
  margin-top: 32px;
}

.post-body p {
  margin-bottom: 0;
}

.post-body a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.post-body a:hover {
  color: var(--primary);
}

.post-body blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(255, 255, 255, 0.03);
  padding: 18px 22px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-style: normal;
}

.post-body img {
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.post-body ul,
.post-body ol {
  padding-left: 24px;
}

.post-body li {
  margin-bottom: 8px;
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  border-radius: 12px;
  overflow: hidden;
}

.post-body th,
.post-body td {
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
  font-size: 15px;
}

.post-body th {
  background: var(--bg-card);
  color: var(--primary-light);
  font-weight: 600;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--primary-light);
  border: 1px solid var(--gold-border);
  background: transparent;
  white-space: nowrap;
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 96px 24px;
}

.not-found h2 {
  font-size: 32px;
  color: #fff;
  margin-bottom: 16px;
}

.not-found p {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 16px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 96px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.related-section .section-title {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.related-section .section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--ease);
  display: block;
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--gold-border);
}

.related-thumb {
  height: 160px;
  overflow: hidden;
  background: linear-gradient(135deg, #1A1A1E, #2A2620);
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.related-card:hover .related-thumb img {
  transform: scale(1.06);
}

.related-info {
  padding: 24px;
}

.related-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-top: 12px;
  margin-bottom: 8px;
  line-height: 1.4;
  transition: color 0.25s ease;
}

.related-card:hover .related-info h3 {
  color: var(--primary-light);
}

.related-info p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-date {
  font-size: 13px;
  color: var(--text-weak);
}

.related-footer {
  text-align: center;
  margin-top: 48px;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 96px 0;
  background: var(--bg-primary);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

.faq-section .section-title {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 8px;
}

.faq-section .section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 48px;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
  transition: var(--ease);
}

.faq-item:hover {
  border-color: rgba(201, 169, 106, 0.2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  text-align: left;
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  padding: 0;
  gap: 24px;
  transition: color 0.25s ease;
}

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

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s ease;
}

.faq-icon::before {
  width: 16px;
  height: 2px;
  top: 10px;
  left: 3px;
}

.faq-icon::after {
  width: 2px;
  height: 16px;
  top: 3px;
  left: 10px;
}

.faq-item.active .faq-icon::after {
  transform: scaleY(0);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.7);
}

.faq-item.active .faq-answer {
  max-height: 320px;
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 96px 0;
  background: var(--bg-primary);
}

.cta-box {
  position: relative;
  background: linear-gradient(135deg, #0C0C0E 0%, #1D1A14 55%, #3A2C1A 100%);
  border: 1px solid rgba(201, 169, 106, 0.2);
  border-radius: 32px;
  padding: 80px 40px;
  text-align: center;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(201, 169, 106, 0.12);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  animation: rotateRing 24s linear infinite;
  pointer-events: none;
}

.cta-box::after {
  content: '';
  position: absolute;
  width: 560px;
  height: 560px;
  border: 1px solid rgba(201, 169, 106, 0.06);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  animation: rotateRing 36s linear infinite reverse;
  pointer-events: none;
}

@keyframes rotateRing {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

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

.cta-box h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-box p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: #0A0A0C;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 48px;
}

.footer-brand h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.75;
  max-width: 340px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  padding: 5px 0;
  transition: var(--ease);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  padding: 5px 0;
  word-break: break-all;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 32px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.02em;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-links {
    gap: 24px;
  }

  .container {
    padding: 0 32px;
  }

  .related-grid {
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 24px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-actions .search-icon {
    display: none;
  }

  .header-actions .btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .mobile-menu {
    padding-left: 24px;
    padding-right: 24px;
  }

  .post-hero {
    padding: 100px 0 56px;
  }

  .post-header-row {
    flex-direction: column;
    gap: 20px;
  }

  .post-actions {
    padding-top: 0;
  }

  .post-content-section {
    padding: 64px 0;
  }

  .related-section,
  .faq-section,
  .cta-section {
    padding: 64px 0;
  }

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

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

  .cta-box {
    padding: 56px 24px;
    border-radius: 24px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .header-actions .btn {
    display: none;
  }

  .mobile-menu {
    padding-left: 16px;
    padding-right: 16px;
  }

  .post-hero {
    padding: 88px 0 48px;
  }

  .post-header-row h1 {
    font-size: 28px;
  }

  .breadcrumb .current {
    max-width: 220px;
  }

  .post-container {
    padding: 0 4px;
  }

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

  .related-thumb {
    height: 180px;
  }

  .faq-item {
    padding: 20px;
  }

  .cta-box {
    padding: 48px 20px;
  }

  .footer-bottom {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}