/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --primary:#1e1b4b;
  --primary-2:#312e81;
  --primary-3:#4338ca;
  --accent:#f59e0b;
  --accent-dark:#d97706;
  --accent-light:#fef3c7;
  --bg:#f8fafc;
  --bg-alt:#f1f5f9;
  --bg-dark:#0f172a;
  --card:#ffffff;
  --text:#1e293b;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --radius:18px;
  --radius-sm:10px;
  --radius-lg:28px;
  --shadow:0 4px 24px rgba(30,27,75,.06);
  --shadow-lg:0 16px 48px rgba(30,27,75,.12);
  --transition:.3s cubic-bezier(.4,0,.2,1);
  --container:1200px;
  --section-pad:88px;
}

/* ========== Reset & Base ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.6;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit;outline:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{line-height:1.25;font-weight:700;color:var(--text)}
p{margin:0}

/* ========== 容器 ========== */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--section-pad) 0}
.section-head{margin-bottom:52px}
.section-head.center{text-align:center}
.section-head h2{font-size:2.15rem;margin:14px 0 12px;letter-spacing:-.02em}
.section-head p{color:var(--text-muted);font-size:1.05rem;max-width:640px}
.section-head.center p{margin-left:auto;margin-right:auto}
.badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--accent-light);
  color:var(--accent-dark);font-size:.8rem;font-weight:700;padding:6px 16px;
  border-radius:999px;letter-spacing:.03em;border:1px solid #fde68a;
}
.badge i{font-size:.75rem}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:.95rem;border-radius:999px;padding:12px 28px;
  border:2px solid transparent;cursor:pointer;transition:var(--transition);
  white-space:nowrap;letter-spacing:.01em;
}
.btn i{font-size:.85rem;transition:transform var(--transition)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);transform:translateY(-2px);box-shadow:0 8px 28px rgba(30,27,75,.25)}
.btn-primary:hover i{transform:translateX(4px)}
.btn-accent{background:var(--accent);color:var(--bg-dark)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 28px rgba(245,158,11,.35)}
.btn-outline{border-color:var(--border);background:transparent;color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:#fff}
.btn-light{border-color:rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.08)}
.btn-light:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.7)}
.btn-lg{padding:16px 42px;font-size:1.05rem}
.btn-sm{padding:9px 22px;font-size:.88rem}

/* ========== Header ========== */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.88);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);box-shadow:0 2px 16px rgba(15,23,42,.04);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;position:relative;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{
  width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-3));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;
  box-shadow:0 4px 14px rgba(67,56,202,.3);
}
.logo-text{font-size:1.28rem;font-weight:800;color:var(--primary);letter-spacing:-.01em;line-height:1.1}
.logo-text span{display:block;font-size:.72rem;font-weight:600;color:var(--text-muted);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:6px;margin:0 auto}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:999px;
  font-weight:500;font-size:.92rem;color:var(--text-muted);transition:var(--transition);
  border:1px solid transparent;
}
.nav-link i{font-size:.8rem}
.nav-link:hover{color:var(--primary);background:var(--bg-alt)}
.nav-link.active{color:var(--primary);background:var(--accent-light);font-weight:600;border-color:#fde68a}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions .btn{flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  background:#fff;color:var(--text);cursor:pointer;align-items:center;justify-content:center;
  font-size:1.15rem;transition:var(--transition);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ========== Hero ========== */
.hero{
  position:relative;min-height:660px;display:flex;align-items:center;
  background:linear-gradient(120deg,rgba(15,23,42,.86) 26%,rgba(30,27,75,.64) 64%,rgba(67,56,202,.46) 100%),
  url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
  color:#fff;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background:radial-gradient(ellipse at top right,rgba(245,158,11,.16),transparent 55%);
}
.hero .container{position:relative;z-index:2;padding-top:60px;padding-bottom:60px}
.hero-content{max-width:760px}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:8px 18px;
  font-size:.85rem;font-weight:500;color:var(--accent-light);margin-bottom:26px;backdrop-filter:blur(8px);
}
.hero-chip i{color:var(--accent)}
.hero h1{font-size:3.4rem;font-weight:900;letter-spacing:-.03em;line-height:1.12;margin-bottom:22px}
.hero h1 .hl{color:var(--accent)}
.hero p{font-size:1.15rem;color:rgba(255,255,255,.85);line-height:1.7;max-width:600px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:56px;
  padding:26px 32px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);backdrop-filter:blur(10px);max-width:600px;
}
.metric{display:flex;flex-direction:column;min-width:110px}
.metric-value{font-size:1.7rem;font-weight:800;color:#fff;letter-spacing:-.02em}
.metric-label{font-size:.82rem;color:rgba(255,255,255,.65);margin-top:2px}

/* ========== Stats Bar ========== */
.stats-bar{padding:36px 0;border-bottom:1px solid var(--border);background:var(--card)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{display:flex;align-items:center;gap:16px;padding:18px 8px}
.stat-icon{
  width:56px;height:56px;border-radius:16px;background:var(--accent-light);color:var(--accent-dark);
  display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0;
  border:1px solid #fde68a;
}
.stat-item strong{font-size:1.65rem;color:var(--primary);line-height:1.1;display:block}
.stat-item span{font-size:.85rem;color:var(--text-muted)}

/* ========== Features ========== */
.features{background:var(--bg)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:34px 26px;transition:var(--transition);position:relative;overflow:hidden;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--primary-3));opacity:0;transition:var(--transition);
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:62px;height:62px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--primary-3));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:22px;
  box-shadow:0 8px 24px rgba(67,56,202,.25);
}
.feature-card h3{font-size:1.12rem;margin-bottom:10px}
.feature-card p{color:var(--text-muted);font-size:.92rem;line-height:1.65}

/* ========== 分类入口 ========== */
.category-section{background:var(--bg-alt)}
.category-card{
  display:grid;grid-template-columns:1.1fr .9fr;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:var(--transition);
}
.category-card:hover{box-shadow:var(--shadow-lg)}
.category-info{padding:52px 48px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center}
.category-info h2{font-size:1.9rem;margin:14px 0 14px;letter-spacing:-.02em}
.category-info p{color:var(--text-muted);margin-bottom:28px;line-height:1.7;max-width:440px}
.category-cover{position:relative;min-height:320px}
.category-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.category-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,var(--card) 0%,transparent 45%);
}

/* ========== 最新资讯 ========== */
.news-section{background:var(--bg)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:var(--transition);display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.news-card-media{position:relative;height:200px;overflow:hidden}
.news-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-card-media img{transform:scale(1.06)}
.news-card-media::after{
  content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(15,23,42,.35));
}
.tax-tag{
  position:absolute;z-index:3;bottom:14px;left:14px;background:rgba(255,255,255,.94);
  color:var(--primary);font-size:.75rem;font-weight:700;padding:5px 12px;border-radius:999px;
  box-shadow:0 4px 12px rgba(0,0,0,.15);
}
.news-card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-card-body h3{font-size:1.05rem;line-height:1.45;margin-bottom:10px}
.news-card-body h3 a{color:var(--text);transition:var(--transition)}
.news-card-body h3 a:hover{color:var(--primary-3)}
.news-card-body p{color:var(--text-muted);font-size:.88rem;line-height:1.6;flex:1;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;border-top:1px solid var(--border);padding-top:14px}
.news-meta span{font-size:.8rem;color:var(--text-muted);display:inline-flex;align-items:center;gap:6px}
.news-meta .read-more{color:var(--primary);font-weight:600}
.news-meta .read-more i{transition:transform var(--transition)}
.news-card:hover .read-more i{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:60px 20px;background:var(--card);
  border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-muted);
}

/* ========== 热门专题 ========== */
.topics{background:var(--bg-alt)}
.topics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.topic-card{
  display:grid;grid-template-columns:240px 1fr;background:var(--card);border-radius:var(--radius);
  overflow:hidden;border:1px solid var(--border);transition:var(--transition);align-items:stretch;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.topic-img{position:relative;min-height:180px}
.topic-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.topic-info{padding:26px 28px;display:flex;flex-direction:column;justify-content:center;gap:8px}
.topic-info h3{font-size:1.12rem;color:var(--primary)}
.topic-info p{color:var(--text-muted);font-size:.88rem;line-height:1.6}
.topic-info .topic-tag{font-size:.75rem;font-weight:700;color:var(--accent-dark);display:inline-flex;align-items:center;gap:6px}
.topic-info .topic-tag i{font-size:.7rem}

/* ========== 流程 ========== */
.process{background:var(--bg)}
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;position:relative}
.process-grid::before{
  content:'';position:absolute;top:54px;left:15%;right:15%;height:2px;
  background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
  opacity:.25;z-index:0;
}
.process-step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:42px 32px;text-align:center;position:relative;z-index:1;transition:var(--transition);
}
.process-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.step-num{
  width:54px;height:54px;margin:0 auto 20px;border-radius:50%;background:var(--primary);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:800;
  box-shadow:0 8px 24px rgba(30,27,75,.25);position:relative;
}
.process-step h3{font-size:1.1rem;margin-bottom:10px}
.process-step p{color:var(--text-muted);font-size:.9rem;line-height:1.65}

/* ========== FAQ ========== */
.faq-section{background:var(--bg-alt)}
.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-sm);
  transition:var(--transition);overflow:hidden;
}
.faq-item:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 26px;cursor:pointer;font-weight:600;color:var(--text);list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--text-muted);font-size:.85rem;transition:transform var(--transition)}
.faq-item[open] summary{border-bottom:1px solid var(--border)}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--primary)}
.faq-item p{padding:18px 26px;color:var(--text-muted);font-size:.92rem;line-height:1.75;background:var(--bg)}

/* ========== CTA ========== */
.cta-section{
  padding:88px 0;
  background:linear-gradient(120deg,rgba(15,23,42,.88) 30%,rgba(30,27,75,.78) 70%),
  url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
  position:relative;overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;top:-60px;right:-40px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,158,11,.18),transparent 70%);
}
.cta-inner{text-align:center;color:#fff;max-width:680px;margin:0 auto;position:relative;z-index:2}
.cta-inner h2{font-size:2.3rem;font-weight:800;margin-bottom:16px;letter-spacing:-.02em}
.cta-inner p{color:rgba(255,255,255,.8);font-size:1.05rem;margin-bottom:32px}
.cta-inner .btn-lg{color:var(--bg-dark)}

/* ========== Footer ========== */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7)}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding:64px 0 48px;
}
.footer-logo{font-size:1.4rem;font-weight:800;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo i{color:var(--accent)}
.footer-brand p{font-size:.9rem;line-height:1.7;max-width:310px;margin-bottom:20px}
.social-links{display:flex;gap:10px}
.social-links a{
  width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.75);font-size:.95rem;transition:var(--transition);
}
.social-links a:hover{background:var(--accent);color:var(--bg-dark);border-color:var(--accent);transform:translateY(-3px)}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:18px;letter-spacing:.03em}
.footer-col a{
  display:block;padding:6px 0;font-size:.88rem;color:rgba(255,255,255,.58);
  transition:var(--transition);
}
.footer-col a:hover{color:var(--accent);padding-left:6px}
.footer-col p{font-size:.85rem;padding:5px 0;color:rgba(255,255,255,.58);display:flex;align-items:center;gap:10px}
.footer-col p i{color:var(--accent);width:18px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0;
  text-align:center;font-size:.82rem;color:rgba(255,255,255,.42);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  :root{--section-pad:68px}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .topic-card{grid-template-columns:200px 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  :root{--section-pad:56px}
  .header-inner{flex-wrap:wrap;height:auto;padding:14px 0;row-gap:10px}
  .logo-text{font-size:1.15rem}
  .logo-text span{font-size:.68rem}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{
    display:none;flex-basis:100%;order:4;flex-direction:column;align-items:stretch;
    background:var(--card);padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);
    margin-top:0;
  }
  .main-nav.open{display:flex}
  .nav-link{justify-content:center;padding:12px;font-size:1rem}
  .nav-link.active{background:var(--accent-light)}
  .hero{min-height:540px}
  .hero h1{font-size:2.2rem}
  .hero p{font-size:1rem}
  .hero-metrics{padding:20px;gap:14px}
  .metric-value{font-size:1.3rem}
  .section-head h2{font-size:1.6rem}
  .category-card{grid-template-columns:1fr}
  .category-info{padding:36px 28px}
  .category-cover{min-height:240px}
  .category-cover img{position:relative;height:240px}
  .category-cover::after{display:none}
  .topics-grid{grid-template-columns:1fr}
  .topic-card{grid-template-columns:1fr}
  .topic-img{min-height:180px;position:relative}
  .topic-img img{position:absolute;height:100%}
  .process-grid{grid-template-columns:1fr;gap:20px}
  .process-grid::before{display:none}
  .faq-item summary{font-size:.92rem;padding:18px 20px}
  .cta-inner h2{font-size:1.7rem}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .features-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:8px}
  .stat-item{flex-direction:column;gap:8px;text-align:center;padding:14px 8px}
  .hero h1{font-size:1.8rem}
  .hero-actions .btn{width:100%}
  .hero-metrics{flex-direction:column;gap:16px;width:100%}
  .metric{flex-direction:row;justify-content:space-between;align-items:center}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-top:44px}
  .btn-lg{width:100%}
}

/* roulang page: category1 */
:root{
  --primary:#4f46e5;
  --primary-soft:#eef2ff;
  --primary-dark:#4338ca;
  --accent:#f59e0b;
  --accent-soft:#fef3c7;
  --bg:#f1f5f9;
  --surface:#ffffff;
  --surface-dark:#0f172a;
  --text:#0f172a;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:18px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.06);
  --shadow:0 6px 24px rgba(15,23,42,.08);
  --shadow-lg:0 18px 44px rgba(15,23,42,.14);
  --space:80px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease}
button{font-family:inherit;border:none;background:none;cursor:pointer}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space) 0}
.section-dark{background:var(--surface-dark)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:999px;transition:all .3s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;padding:12px 28px;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(79,70,229,.36)}
.btn-white{background:#fff;color:var(--primary-dark);padding:14px 34px;box-shadow:0 8px 24px rgba(0,0,0,.16)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.22)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-lg{padding:14px 34px;font-size:16px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--text);letter-spacing:-.2px}
.logo-icon{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#8b5cf6);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;box-shadow:0 6px 16px rgba(79,70,229,.32)}
.logo-text{display:flex;align-items:baseline;gap:4px}
.logo-text span{color:var(--primary);font-weight:700}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{display:inline-flex;align-items:center;gap:8px;padding:9px 20px;border-radius:999px;font-size:15px;font-weight:600;color:var(--text-weak);transition:all .25s ease}
.nav-link:hover{color:var(--primary);background:var(--primary-soft)}
.nav-link.active{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.28)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:var(--primary-soft);color:var(--primary);font-size:18px;align-items:center;justify-content:center;transition:background .2s ease}
.nav-toggle:hover{background:#e0e7ff}

/* ===== Page Hero ===== */
.page-hero{position:relative;padding:110px 0 90px;background:linear-gradient(135deg,rgba(15,23,42,.92) 20%,rgba(79,70,229,.78) 100%),url('/assets/images/backpic/back-1.png') center/cover;color:#fff;overflow:hidden}
.page-hero::after{content:'';position:absolute;bottom:-60px;right:-40px;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.06);pointer-events:none}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:28px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.88);font-weight:500}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:11px;color:rgba(255,255,255,.5)}
.page-hero-content{max-width:760px;position:relative;z-index:2}
.page-hero-content h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-1px;margin-bottom:18px}
.page-hero-content h1 span{color:#fbbf24}
.hero-subtitle{font-size:18px;line-height:1.8;color:rgba(255,255,255,.82);margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tag{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);font-size:14px;font-weight:500;color:#fff;backdrop-filter:blur(4px)}
.hero-tag i{color:#fbbf24}

/* ===== Section Head ===== */
.section-head{text-align:center;max-width:640px;margin:0 auto 52px}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 18px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.5px;margin-bottom:16px}
.section-head h2{font-size:34px;font-weight:800;letter-spacing:-.5px;line-height:1.3;margin-bottom:14px}
.section-head p{color:var(--text-weak);font-size:16px}
.section-head.light h2{color:#fff}
.section-head.light p{color:rgba(255,255,255,.72)}

/* ===== Category Cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .35s ease,box-shadow .35s ease}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.cat-cover{position:relative;height:160px;overflow:hidden}
.cat-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-cover img{transform:scale(1.06)}
.cat-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(15,23,42,.35))}
.cat-body{padding:24px}
.cat-icon{width:46px;height:46px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.cat-title{font-size:18px;font-weight:700;margin-bottom:8px}
.cat-desc{font-size:14px;color:var(--text-weak);line-height:1.7;margin-bottom:16px}
.cat-link{font-size:14px;font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.cat-link:hover{gap:10px}
.cat-card:nth-child(2) .cat-icon{background:#ecfdf5;color:#10b981}
.cat-card:nth-child(3) .cat-icon{background:var(--accent-soft);color:#d97706}
.cat-card:nth-child(4) .cat-icon{background:#fdf2f8;color:#ec4899}

/* ===== Stats ===== */
.stats-section{background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 100%);position:relative;overflow:hidden}
.stats-section::before{content:'';position:absolute;top:-80px;left:-60px;width:300px;height:300px;border-radius:50%;background:rgba(79,70,229,.22);filter:blur(60px)}
.stats-section::after{content:'';position:absolute;bottom:-60px;right:-40px;width:260px;height:260px;border-radius:50%;background:rgba(245,158,11,.15);filter:blur(60px)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;z-index:2}
.stat-item{text-align:center;padding:36px 20px;border-radius:var(--radius);background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(8px)}
.stat-num{font-size:48px;font-weight:800;color:#fbbf24;line-height:1.2;letter-spacing:-1px}
.stat-label{margin-top:8px;font-size:15px;color:rgba(255,255,255,.75)}

/* ===== Guide List ===== */
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.guide-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.guide-cover{position:relative;height:190px;overflow:hidden}
.guide-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.guide-card:hover .guide-cover img{transform:scale(1.04)}
.guide-cat{position:absolute;top:14px;left:14px;padding:5px 14px;border-radius:999px;background:rgba(15,23,42,.75);backdrop-filter:blur(6px);color:#fff;font-size:13px;font-weight:600;z-index:2}
.guide-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.guide-title{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:10px}
.guide-title a{transition:color .25s ease}
.guide-title a:hover{color:var(--primary)}
.guide-desc{font-size:14px;color:var(--text-weak);line-height:1.75;margin-bottom:18px;flex:1}
.guide-meta{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--text-weak);border-top:1px solid var(--border);padding-top:16px}
.guide-meta span{display:inline-flex;align-items:center;gap:6px}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600}
.tag-beginner{background:#ecfdf5;color:#10b981}
.tag-tips{background:var(--primary-soft);color:var(--primary)}
.tag-version{background:var(--accent-soft);color:#d97706}
.tag-event{background:#fdf2f8;color:#ec4899}
.guide-tags{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}

/* ===== Featured ===== */
.featured-section{background:var(--surface)}
.featured-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.featured-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:360px;display:flex;align-items:flex-end;box-shadow:var(--shadow);transition:transform .35s ease,box-shadow .35s ease}
.featured-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.featured-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.featured-card:hover img{transform:scale(1.05)}
.featured-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(15,23,42,.82) 100%)}
.featured-body{position:relative;z-index:2;padding:36px 32px;color:#fff}
.featured-label{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;background:rgba(245,158,11,.9);font-size:13px;font-weight:700;margin-bottom:14px}
.featured-body h3{font-size:24px;font-weight:800;line-height:1.35;margin-bottom:12px}
.featured-body p{font-size:14px;color:rgba(255,255,255,.8);line-height:1.75;margin-bottom:18px}
.featured-meta{display:flex;gap:16px;font-size:13px;color:rgba(255,255,255,.7);align-items:center}

/* ===== Steps ===== */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;text-align:center;box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;position:relative;overflow:hidden}
.step-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.step-num{font-size:48px;font-weight:800;line-height:1;background:linear-gradient(135deg,var(--primary),#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:20px;display:inline-block}
.step-title{font-size:18px;font-weight:700;margin-bottom:10px}
.step-desc{font-size:14px;color:var(--text-weak);line-height:1.75}
.step-card .step-icon{width:56px;height:56px;border-radius:16px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;margin:0 auto 20px}

/* ===== FAQ ===== */
.faq-section{background:var(--surface);border-block:1px solid var(--border)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);margin-bottom:14px;overflow:hidden;transition:box-shadow .3s ease}
.faq-item[open]{box-shadow:var(--shadow);background:var(--surface)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;transition:color .25s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary i{color:var(--primary);font-size:18px;transition:transform .3s ease;flex-shrink:0}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-answer{padding:0 24px 22px;color:var(--text-weak);font-size:15px;line-height:1.85;border-top:1px dashed var(--border);margin:0 24px 0 0}

/* ===== CTA ===== */
.cta-box{border-radius:calc(var(--radius) + 8px);padding:64px 56px;background:linear-gradient(135deg,var(--primary) 0%,#7c3aed 100%);text-align:center;color:#fff;position:relative;overflow:hidden;box-shadow:0 24px 60px rgba(79,70,229,.35)}
.cta-box::before{content:'';position:absolute;top:-60px;right:-40px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.12)}
.cta-box::after{content:'';position:absolute;bottom:-70px;left:-30px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-box h2{font-size:32px;font-weight:800;margin-bottom:14px;position:relative;z-index:2}
.cta-box p{font-size:16px;color:rgba(255,255,255,.85);max-width:520px;margin:0 auto 30px;position:relative;z-index:2}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ===== Footer ===== */
.site-footer{background:#0b1120;color:rgba(255,255,255,.68);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{max-width:340px}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:#fff;margin-bottom:18px}
.footer-logo i{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#8b5cf6);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:20px}
.social-links{display:flex;gap:10px}
.social-links a{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);font-size:16px;transition:all .3s ease}
.social-links a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col a{display:block;color:rgba(255,255,255,.6);font-size:14px;margin-bottom:10px;transition:color .25s ease}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;margin-bottom:12px;line-height:1.7}
.footer-col i{margin-right:8px;color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;padding:24px 0;font-size:14px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:#fff}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .guide-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .page-hero{padding:90px 0 70px}
  .page-hero-content h1{font-size:38px}
}
@media (max-width:768px){
  :root{--space:56px}
  .site-header .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;padding:16px 24px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);flex-direction:column;align-items:stretch;gap:8px}
  .site-header .main-nav.open{display:flex}
  .nav-link{padding:12px 16px;font-size:15px}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .page-hero{padding:70px 0 60px}
  .page-hero-content h1{font-size:32px}
  .hero-subtitle{font-size:16px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .guide-grid{grid-template-columns:1fr}
  .featured-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-box{padding:44px 28px}
  .cta-box h2{font-size:26px}
  .section-head h2{font-size:28px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .card-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat-num{font-size:36px}
  .page-hero-content h1{font-size:28px}
  .hero-tags{gap:8px}
  .hero-tag{padding:6px 12px;font-size:13px}
  .guide-body{padding:18px}
  .featured-body{padding:28px 24px}
  .featured-body h3{font-size:20px}
  .breadcrumb{font-size:13px;margin-bottom:20px}
}

/* roulang page: article */
:root {
    --primary: #0f1b2c;
    --primary-light: #1c2e4a;
    --primary-dark: #080e1a;
    --accent: #e8a33d;
    --accent-dark: #d18f2c;
    --accent-light: #fdf0dc;
    --bg: #f4f6fa;
    --bg-alt: #e9edf3;
    --card: #ffffff;
    --text: #1a1a2e;
    --text-muted: #5c6b7f;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 20px rgba(15, 27, 44, 0.08);
    --shadow-hover: 0 12px 32px rgba(15, 27, 44, 0.14);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { font-family: inherit; border: none; cursor: pointer; background: none; }
i { line-height: 1; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.site-header { background: rgba(15, 27, 44, 0.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: #fff; line-height: 1.2; }
.logo-icon { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--accent), #f5c26b); display: flex; align-items: center; justify-content: center; color: var(--primary-dark); font-size: 17px; flex-shrink: 0; box-shadow: 0 4px 12px rgba(232, 163, 61, 0.35); }
.logo-text { letter-spacing: 0.5px; }
.logo-text span { color: var(--accent); }
.main-nav { display: flex; gap: 6px; align-items: center; }
.nav-link { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: var(--radius-sm); color: rgba(255, 255, 255, 0.72); font-weight: 500; font-size: 15px; border: 1px solid transparent; }
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-link.active { color: #fff; background: rgba(232, 163, 61, 0.16); border-color: rgba(232, 163, 61, 0.25); }
.nav-link.active i { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 15px; transition: var(--transition); border: 2px solid transparent; line-height: 1.4; }
.btn-sm { padding: 8px 18px; font-size: 14px; border-radius: 8px; }
.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 14px; }
.btn-primary { background: var(--accent); color: var(--primary-dark); }
.btn-primary:hover { background: var(--accent-dark); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232, 163, 61, 0.35); }
.btn-secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--primary); color: #fff; }
.btn-block { width: 100%; }
.nav-toggle { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border-radius: var(--radius-sm); background: rgba(255, 255, 255, 0.1); color: #fff; font-size: 18px; transition: var(--transition); }
.nav-toggle:hover { background: rgba(255, 255, 255, 0.2); }
.article-hero { position: relative; padding: 72px 0 56px; background: linear-gradient(135deg, rgba(15, 27, 44, 0.95), rgba(28, 46, 74, 0.85)), url('/assets/images/backpic/back-2.png') center / cover no-repeat; color: #fff; overflow: hidden; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-bottom: 28px; }
.breadcrumb a { color: rgba(255, 255, 255, 0.65); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 10px; color: rgba(255, 255, 255, 0.35); }
.breadcrumb span { color: rgba(255, 255, 255, 0.9); max-width: 420px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.article-head-info { max-width: 900px; }
.article-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(232, 163, 61, 0.18); border: 1px solid rgba(232, 163, 61, 0.35); color: var(--accent); padding: 6px 16px; border-radius: 100px; font-size: 13px; font-weight: 600; margin-bottom: 18px; }
.article-badge i { font-size: 12px; }
.article-head-info h1 { font-size: 38px; line-height: 1.3; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 20px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; }
.meta-item { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.75); }
.meta-item i { color: var(--accent); }
.article-body-section { padding: 60px 0 80px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 40px; align-items: start; }
.article-card { background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.article-cover { position: relative; }
.article-cover img { width: 100%; height: 420px; object-fit: cover; }
.article-cover::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(15, 27, 44, 0.25)); pointer-events: none; }
.article-content-body { padding: 44px 48px 36px; }
.article-content-body h2 { font-size: 24px; font-weight: 700; color: var(--text); margin: 36px 0 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.article-content-body h3 { font-size: 20px; font-weight: 600; color: var(--text); margin: 26px 0 12px; }
.article-content-body p { margin-bottom: 18px; font-size: 16px; color: #3d4a5c; line-height: 1.9; }
.article-content-body ul, .article-content-body ol { margin: 16px 0 22px 22px; color: #3d4a5c; font-size: 16px; }
.article-content-body li { margin-bottom: 8px; }
.article-content-body blockquote { border-left: 4px solid var(--accent); background: var(--accent-light); padding: 16px 22px; margin: 22px 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: #5b4a2a; font-style: italic; }
.article-content-body img { border-radius: var(--radius-sm); margin: 22px 0; }
.article-content-body a { color: var(--accent-dark); font-weight: 600; text-decoration: underline; }
.article-content-body a:hover { color: var(--primary); }
.article-content-body code { background: var(--bg-alt); padding: 3px 8px; border-radius: 6px; font-size: 0.9em; font-family: "SFMono-Regular", Consolas, monospace; }
.article-content-body pre { background: var(--primary); color: #e2e8f0; padding: 20px 24px; border-radius: var(--radius-sm); overflow-x: auto; margin-bottom: 20px; font-size: 14px; }
.empty-state { text-align: center; padding: 60px 20px; }
.empty-state i { font-size: 48px; color: var(--text-light); margin-bottom: 20px; }
.empty-state h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.empty-state p { color: var(--text-muted); margin-bottom: 24px; }
.article-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.tag-label { font-size: 14px; font-weight: 700; color: var(--text); margin-right: 4px; }
.tag { display: inline-block; padding: 6px 14px; border-radius: 100px; background: var(--bg-alt); color: var(--text-muted); font-size: 13px; font-weight: 500; border: 1px solid var(--border); }
.tag:hover { background: var(--accent-light); color: var(--accent-dark); border-color: rgba(232, 163, 61, 0.4); }
.article-share { display: flex; align-items: center; gap: 10px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border); }
.article-share span { font-size: 14px; font-weight: 600; color: var(--text-muted); }
.share-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-alt); color: var(--text-muted); font-size: 14px; border: 1px solid var(--border); }
.share-btn:hover { background: var(--accent); color: var(--primary-dark); border-color: var(--accent); transform: translateY(-2px); }
.sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 96px; }
.sidebar-widget { background: var(--card); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.widget-title { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.widget-title i { color: var(--accent); font-size: 16px; }
.widget-list { display: flex; flex-direction: column; }
.widget-item { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px solid #f1f5f9; align-items: flex-start; transition: var(--transition); }
.widget-item:last-child { border-bottom: none; }
.widget-item:hover { background: #fafbfc; border-radius: 8px; padding-left: 8px; padding-right: 8px; margin: 0 -8px; border-bottom-color: transparent; }
.widget-index { flex-shrink: 0; width: 26px; height: 26px; border-radius: 8px; background: var(--bg-alt); color: var(--text-muted); font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.widget-item:nth-child(1) .widget-index { background: var(--accent); color: var(--primary-dark); }
.widget-item:nth-child(2) .widget-index { background: #fef0d0; color: var(--accent-dark); }
.widget-item:nth-child(3) .widget-index { background: #e8edf5; color: var(--primary-light); }
.widget-info { flex: 1; min-width: 0; }
.widget-info strong { display: block; font-size: 14px; line-height: 1.5; color: var(--text); margin-bottom: 4px; }
.widget-info small { font-size: 12px; color: var(--text-light); }
.widget-item:hover .widget-info strong { color: var(--accent-dark); }
.widget-empty { font-size: 14px; color: var(--text-muted); text-align: center; padding: 20px 0; }
.widget-cats { display: flex; flex-wrap: wrap; gap: 10px; }
.cat-chip { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 100px; background: var(--bg-alt); color: var(--text-muted); font-size: 14px; font-weight: 500; border: 1px solid var(--border); }
.cat-chip:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }
.sidebar-cta { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-color: transparent; color: #fff; }
.sidebar-cta .widget-title { color: #fff; border-bottom-color: rgba(255, 255, 255, 0.1); }
.sidebar-cta p { font-size: 14px; color: rgba(255, 255, 255, 0.72); margin-bottom: 20px; }
.related-section { padding: 80px 0; background: var(--bg-alt); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-tag { display: inline-block; background: var(--accent-light); color: var(--accent-dark); padding: 7px 18px; border-radius: 100px; font-size: 13px; font-weight: 600; margin-bottom: 14px; letter-spacing: 0.02em; }
.section-head h2 { font-size: 32px; font-weight: 800; color: var(--text); letter-spacing: -0.01em; }
.section-head p { color: var(--text-muted); margin-top: 10px; font-size: 16px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card { background: var(--card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); box-shadow: 0 2px 8px rgba(15, 27, 44, 0.04); }
.related-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.related-card-img { position: relative; height: 200px; overflow: hidden; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-body { padding: 26px 28px; }
.related-card-body .card-tag { display: inline-block; background: var(--accent-light); color: var(--accent-dark); padding: 4px 12px; border-radius: 100px; font-size: 12px; font-weight: 600; }
.related-card-body h3 { font-size: 19px; font-weight: 700; color: var(--text); margin: 14px 0 10px; line-height: 1.4; }
.related-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 18px; }
.related-card-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--accent-dark); }
.related-card-link:hover { color: var(--primary); gap: 10px; }
.faq-section { padding: 80px 0; }
.faq-grid { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: rgba(232, 163, 61, 0.4); box-shadow: var(--shadow); }
.faq-item summary { padding: 24px 30px; font-weight: 600; font-size: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; color: var(--text); gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f067'; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 14px; color: var(--accent); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] { border-color: rgba(232, 163, 61, 0.4); }
.faq-item .faq-answer { padding: 0 30px 26px; color: var(--text-muted); font-size: 15px; line-height: 1.8; }
.cta-section { position: relative; padding: 90px 0; text-align: center; background: linear-gradient(135deg, rgba(15, 27, 44, 0.94), rgba(28, 46, 74, 0.85)), url('/assets/images/backpic/back-3.png') center / cover no-repeat; color: #fff; }
.cta-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent); }
.cta-section h2 { font-size: 36px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 14px; }
.cta-section p { color: rgba(255, 255, 255, 0.75); font-size: 17px; max-width: 560px; margin: 0 auto 32px; line-height: 1.7; }
.cta-section .btn-accent { background: var(--accent); color: var(--primary-dark); }
.cta-section .btn-accent:hover { background: #f5b85e; color: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(232, 163, 61, 0.4); }
.site-footer { background: var(--primary-dark); color: rgba(255, 255, 255, 0.72); padding-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 52px; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; }
.footer-logo i { color: var(--accent); }
.footer-brand p { font-size: 14px; margin-top: 16px; max-width: 330px; line-height: 1.8; color: rgba(255, 255, 255, 0.6); }
.social-links { display: flex; gap: 10px; margin-top: 20px; }
.social-links a { width: 38px; height: 38px; border-radius: var(--radius-sm); background: rgba(255, 255, 255, 0.08); display: flex; align-items: center; justify-content: center; color: rgba(255, 255, 255, 0.7); font-size: 16px; }
.social-links a:hover { background: var(--accent); color: var(--primary-dark); transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-weight: 700; }
.footer-col a { display: block; padding: 6px 0; font-size: 14px; color: rgba(255, 255, 255, 0.6); }
.footer-col a:hover { color: var(--accent); padding-left: 6px; }
.footer-col p { font-size: 14px; padding: 4px 0; color: rgba(255, 255, 255, 0.6); display: flex; align-items: center; gap: 8px; }
.footer-col p i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 26px 0; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.45); }
.footer-bottom a { color: rgba(255, 255, 255, 0.6); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
    .sidebar-widget { flex: 1 1 calc(50% - 24px); }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
    .article-content-body { padding: 36px 32px; }
}
@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .main-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--primary); flex-direction: column; padding: 20px; gap: 8px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2); }
    .main-nav.open { display: flex; }
    .nav-link { width: 100%; padding: 14px 16px; font-size: 15px; }
    .article-hero { padding: 48px 0 40px; }
    .article-head-info h1 { font-size: 28px; }
    .article-cover img { height: 280px; }
    .article-content-body { padding: 28px 20px; }
    .article-content-body h2 { font-size: 21px; }
    .related-grid { grid-template-columns: 1fr; }
    .faq-item summary { padding: 20px 22px; font-size: 15px; }
    .faq-item .faq-answer { padding: 0 22px 22px; }
    .cta-section { padding: 64px 0; }
    .cta-section h2 { font-size: 28px; }
    .sidebar-widget { flex: 1 1 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .header-actions .btn-sm { display: none; }
    .logo-text { font-size: 18px; }
    .logo-icon { width: 36px; height: 36px; font-size: 15px; }
    .article-meta { gap: 14px; }
    .article-content-body { padding: 24px 16px; }
    .article-tags { gap: 8px; }
    .article-share { flex-wrap: wrap; }
    .related-card-img { height: 180px; }
    .faq-item summary { padding: 18px 18px; }
    .faq-item summary::after { font-size: 13px; }
    .section-head h2 { font-size: 26px; }
    .section-head { margin-bottom: 36px; }
    .btn-lg { padding: 14px 28px; font-size: 15px; }
}