/* roulang page: index */
:root{
  --brand-primary:#1a56db;
  --brand-primary-dark:#1e40af;
  --brand-primary-light:#eff6ff;
  --accent:#f59e0b;
  --accent-dark:#d97706;
  --dark:#0f172a;
  --dark-soft:#1e293b;
  --body-bg:#f8fafc;
  --text:#0f172a;
  --text-light:#475569;
  --text-muted:#94a3b8;
  --border:#e2e8f0;
  --border-dark:#cbd5e1;
  --white:#ffffff;
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:22px;
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow:0 8px 24px rgba(15,23,42,.08);
  --shadow-lg:0 16px 40px rgba(15,23,42,.12);
  --transition:all .25s ease;
  --font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-family);
  background:var(--body-bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:1240px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.7rem 1.6rem;border-radius:50px;font-weight:600;font-size:.95rem;
  border:2px solid transparent;transition:var(--transition);cursor:pointer;line-height:1.4;
}
.btn-primary{background:var(--brand-primary);color:#fff}
.btn-primary:hover{background:var(--brand-primary-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(26,86,219,.25)}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-light{background:#fff;color:var(--brand-primary)}
.btn-light:hover{background:var(--brand-primary-light);transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.08)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(245,158,11,.3)}
.btn-block{width:100%}
.section{padding:84px 0;position:relative}
.section-sm{padding:56px 0}
.section-header{text-align:center;max-width:720px;margin:0 auto 50px}
.section-eyebrow{
  display:inline-block;font-size:.82rem;font-weight:700;letter-spacing:.12em;
  color:var(--brand-primary);text-transform:uppercase;margin-bottom:12px;
  background:var(--brand-primary-light);padding:6px 16px;border-radius:30px;
}
.section-title{
  font-size:2.35rem;font-weight:800;line-height:1.25;letter-spacing:-.02em;
  margin-bottom:14px;color:var(--text);
}
.section-subtitle{font-size:1.05rem;color:var(--text-light);line-height:1.7}
.text-gradient{
  background:linear-gradient(135deg,var(--brand-primary) 0%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}

/* Header */
.site-header{
  background:var(--white);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:1050;box-shadow:0 2px 12px rgba(15,23,42,.04);
}
.header-top{
  display:flex;align-items:center;gap:16px;padding:14px 0;
}
.brand-logo{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
  font-weight:800;font-size:1.45rem;letter-spacing:-.02em;color:var(--text);
}
.brand-logo .logo-icon{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-primary) 0%,var(--brand-primary-dark) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;
  box-shadow:0 6px 16px rgba(26,86,219,.3);
}
.brand-logo span{white-space:nowrap}
.header-search{
  flex:1;max-width:560px;margin:0 auto;
}
.search-form{
  display:flex;align-items:center;background:var(--body-bg);
  border:2px solid var(--border);border-radius:50px;padding:4px 4px 4px 20px;
  transition:var(--transition);
}
.search-form:focus-within{border-color:var(--brand-primary);background:#fff;box-shadow:0 0 0 4px rgba(26,86,219,.1)}
.search-form input{
  flex:1;border:none;background:transparent;outline:none;font-size:.95rem;
  color:var(--text);padding:8px 0;min-width:0;
}
.search-form input::placeholder{color:var(--text-muted)}
.search-form button{
  width:42px;height:42px;border-radius:50%;border:none;background:var(--brand-primary);
  color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:var(--transition);flex-shrink:0;
}
.search-form button:hover{background:var(--brand-primary-dark);transform:rotate(8deg)}
.header-actions{
  display:flex;align-items:center;gap:12px;flex-shrink:0;
}
.header-actions .btn{padding:.55rem 1.3rem;font-size:.9rem}
.header-actions .btn-icon{
  width:42px;height:42px;border-radius:50%;background:var(--body-bg);
  display:flex;align-items:center;justify-content:center;color:var(--text-light);
  border:1px solid var(--border);transition:var(--transition);
}
.header-actions .btn-icon:hover{background:var(--brand-primary-light);color:var(--brand-primary);border-color:var(--brand-primary)}
.main-nav{
  background:var(--white);border-top:1px solid var(--border);
}
.main-nav .nav-list{
  display:flex;align-items:center;gap:4px;padding:0;margin:0;overflow-x:auto;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.main-nav .nav-list::-webkit-scrollbar{display:none}
.main-nav .nav-list li{flex-shrink:0}
.main-nav .nav-list a{
  display:flex;align-items:center;gap:6px;padding:14px 20px;font-weight:600;
  font-size:.95rem;color:var(--text-light);position:relative;white-space:nowrap;
}
.main-nav .nav-list a i{font-size:.85rem;opacity:.7}
.main-nav .nav-list a:hover{color:var(--brand-primary)}
.main-nav .nav-list a.active{color:var(--brand-primary)}
.main-nav .nav-list a.active::after{
  content:"";position:absolute;bottom:0;left:16px;right:16px;height:3px;
  background:var(--brand-primary);border-radius:3px 3px 0 0;
}
.nav-toggle{
  display:none;background:none;border:none;font-size:1.4rem;color:var(--text);
  cursor:pointer;padding:8px;border-radius:8px;
}
@media(max-width:992px){
  .nav-toggle{display:block}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow);
  }
  .main-nav.open{display:block}
  .main-nav .nav-list{flex-direction:column;padding:12px 0}
  .main-nav .nav-list a{padding:14px 24px}
  .main-nav .nav-list a.active::after{top:auto;bottom:8px;left:24px;right:auto;width:32px;height:3px;border-radius:3px}
  .header-search{order:3;flex-basis:100%;margin-top:10px;max-width:100%}
  .header-top{flex-wrap:wrap}
}
@media(max-width:768px){
  .section{padding:60px 0}
  .section-title{font-size:1.8rem}
  .header-actions .btn span{display:none}
  .header-actions .btn{padding:.55rem .9rem}
  .brand-logo{font-size:1.2rem}
}

/* Hero */
.hero{
  position:relative;padding:110px 0 90px;color:#fff;
  background:linear-gradient(135deg,rgba(15,23,42,.92) 0%,rgba(30,46,87,.85) 50%,rgba(15,23,42,.75) 100%),
  url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;bottom:-60px;right:-60px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(245,158,11,.3) 0%,transparent 70%);
  border-radius:50%;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.15);
  border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(8px);
  padding:8px 18px;border-radius:50px;font-size:.85rem;font-weight:600;margin-bottom:24px;
}
.hero-tag i{color:var(--accent)}
.hero h1{
  font-size:3.3rem;font-weight:800;line-height:1.15;letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero h1 .text-gradient{
  background:linear-gradient(135deg,#fff 0%,#e0e7ff 60%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero p.lead{
  font-size:1.15rem;line-height:1.8;color:rgba(255,255,255,.85);
  margin-bottom:36px;max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:48px}
.hero-stats{
  display:flex;gap:40px;flex-wrap:wrap;padding-top:36px;border-top:1px solid rgba(255,255,255,.15);
}
.hero-stat h3{
  font-size:2rem;font-weight:800;color:#fff;margin-bottom:2px;
}
.hero-stat p{font-size:.9rem;color:rgba(255,255,255,.65);margin:0}
@media(max-width:768px){
  .hero{padding:80px 0 60px}
  .hero h1{font-size:2.3rem}
  .hero p.lead{font-size:1rem}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-stats{gap:24px}
  .hero-stat h3{font-size:1.5rem}
}

/* Ticker */
.ticker-wrap{
  background:var(--dark);color:#fff;border-bottom:1px solid rgba(255,255,255,.08);
}
.ticker-inner{
  display:flex;align-items:center;gap:24px;padding:12px 0;
}
.ticker-label{
  display:flex;align-items:center;gap:8px;background:var(--accent);color:#fff;
  font-size:.8rem;font-weight:700;padding:6px 14px;border-radius:6px;flex-shrink:0;
  text-transform:uppercase;letter-spacing:.08em;
}
.ticker-items{
  display:flex;gap:40px;overflow:hidden;white-space:nowrap;flex:1;
}
.ticker-items span{font-size:.9rem;color:rgba(255,255,255,.8)}
.ticker-items span i{color:var(--accent);margin-right:6px}
@media(max-width:768px){
  .ticker-inner{flex-direction:column;align-items:flex-start;gap:8px}
}

/* Feature cards */
.features-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.feature-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 32px;transition:var(--transition);position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--brand-primary),var(--accent));
  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:64px;height:64px;border-radius:18px;
  background:var(--brand-primary-light);color:var(--brand-primary);
  display:flex;align-items:center;justify-content:center;font-size:1.5rem;
  margin-bottom:24px;transition:var(--transition);
}
.feature-card:hover .feature-icon{
  background:var(--brand-primary);color:#fff;transform:rotate(-6deg) scale(1.05);
}
.feature-card h3{font-size:1.2rem;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--text-light);font-size:.95rem;line-height:1.7;margin-bottom:16px}
.feature-link{
  color:var(--brand-primary);font-weight:600;font-size:.9rem;display:inline-flex;align-items:center;gap:6px;
}
.feature-link:hover{gap:10px;color:var(--brand-primary-dark)}
@media(max-width:992px){
  .features-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .features-grid{grid-template-columns:1fr}
}

/* Category cards */
.category-section{background:var(--dark);position:relative;overflow:hidden}
.category-section::before{
  content:"";position:absolute;top:0;left:0;right:0;bottom:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.08;pointer-events:none;
}
.category-section .section-title{color:#fff}
.category-section .section-subtitle{color:rgba(255,255,255,.7)}
.category-section .section-eyebrow{background:rgba(255,255,255,.15);color:var(--accent)}
.category-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;position:relative;z-index:2;
}
.category-card{
  background:rgba(255,255,255,.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);
}
.category-card:hover{transform:translateY(-8px);background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2)}
.category-card-media{position:relative;height:200px;overflow:hidden}
.category-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.category-card:hover .category-card-media img{transform:scale(1.06)}
.category-card-media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(15,23,42,.7) 100%);
}
.category-card-body{padding:26px 24px}
.category-card-body h3{color:#fff;font-size:1.25rem;font-weight:700;margin-bottom:8px}
.category-card-body p{color:rgba(255,255,255,.65);font-size:.92rem;line-height:1.65;margin-bottom:20px}
.category-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:600;font-size:.92rem;
}
.category-link:hover{gap:14px;color:#fff}
@media(max-width:992px){
  .category-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .category-grid{grid-template-columns:1fr}
}

/* News section */
.news-layout{
  display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start;
}
.news-main{
  background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--border);
  padding:32px;box-shadow:var(--shadow-sm);
}
.news-main-header{
  display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;
  padding-bottom:16px;border-bottom:2px solid var(--border);
}
.news-main-header h2{font-size:1.5rem;font-weight:800}
.news-main-header a{
  color:var(--brand-primary);font-size:.9rem;font-weight:600;display:flex;align-items:center;gap:6px;
}
.news-list .news-item{
  padding:22px 0;border-bottom:1px solid var(--border);transition:var(--transition);
}
.news-list .news-item:last-child{border-bottom:none;padding-bottom:0}
.news-item:hover{background:var(--body-bg);padding-left:14px;padding-right:14px;border-radius:10px}
.news-meta{
  display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap;
}
.badge-cat{
  display:inline-block;background:var(--brand-primary-light);color:var(--brand-primary);
  font-size:.75rem;font-weight:700;padding:4px 12px;border-radius:30px;
}
.news-time{font-size:.82rem;color:var(--text-muted)}
.news-item h3{font-size:1.08rem;font-weight:700;margin-bottom:6px;line-height:1.4}
.news-item h3 a{color:var(--text)}
.news-item h3 a:hover{color:var(--brand-primary)}
.news-item p{font-size:.92rem;color:var(--text-light);line-height:1.65;margin:0}
.news-aside{
  display:flex;flex-direction:column;gap:24px;
}
.aside-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-sm);
}
.aside-card h3{
  font-size:1.05rem;font-weight:700;margin-bottom:18px;padding-bottom:12px;
  border-bottom:2px solid var(--border);position:relative;
}
.aside-card h3::after{
  content:"";position:absolute;left:0;bottom:-2px;width:40px;height:2px;background:var(--brand-primary);
}
.aside-link-list li{
  margin-bottom:10px;padding-left:16px;position:relative;
}
.aside-link-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-primary);opacity:.4;
}
.aside-link-list a{color:var(--text-light);font-size:.92rem;font-weight:500}
.aside-link-list a:hover{color:var(--brand-primary);padding-left:4px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  background:var(--body-bg);border:1px solid var(--border);border-radius:30px;
  padding:6px 14px;font-size:.82rem;color:var(--text-light);font-weight:500;
}
.tag-cloud a:hover{background:var(--brand-primary);border-color:var(--brand-primary);color:#fff}
.aside-help{
  background:linear-gradient(135deg,var(--brand-primary) 0%,var(--brand-primary-dark) 100%);
  color:#fff;border-radius:var(--radius-lg);padding:30px;text-align:center;
  position:relative;overflow:hidden;
}
.aside-help::before{
  content:"";position:absolute;top:-30px;right:-30px;width:100px;height:100px;
  background:rgba(255,255,255,.08);border-radius:50%;
}
.aside-help .help-icon{
  width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin:0 auto 18px;
}
.aside-help h4{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.aside-help p{font-size:.88rem;color:rgba(255,255,255,.8);margin-bottom:20px}
@media(max-width:992px){
  .news-layout{grid-template-columns:1fr}
  .news-aside{flex-direction:row;flex-wrap:wrap}
  .news-aside .aside-card{flex:1;min-width:260px}
}
@media(max-width:768px){
  .news-main{padding:22px}
  .news-main-header{flex-direction:column;align-items:flex-start;gap:8px}
}

/* Stats */
.stats-section{
  background:linear-gradient(135deg,var(--dark) 0%,#172554 100%);
  padding:80px 0;position:relative;overflow:hidden;
}
.stats-section::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.06;pointer-events:none;
}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;z-index:2;
}
.stat-block{
  text-align:center;color:#fff;padding:32px 20px;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
  transition:var(--transition);
}
.stat-block:hover{background:rgba(255,255,255,.08);transform:translateY(-4px)}
.stat-block .stat-icon{
  width:50px;height:50px;border-radius:14px;background:rgba(245,158,11,.15);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin:0 auto 16px;
}
.stat-block h3{font-size:2.4rem;font-weight:800;margin-bottom:4px;letter-spacing:-.02em}
.stat-block p{color:rgba(255,255,255,.6);font-size:.88rem;margin:0}
@media(max-width:992px){
  .stats-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-block h3{font-size:1.8rem}
}

/* Process */
.process-steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:step;
}
.process-step{
  position:relative;background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:36px 24px 28px;text-align:center;
  transition:var(--transition);
}
.process-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.process-step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:16px;right:20px;font-size:2.6rem;font-weight:800;
  color:var(--border);line-height:1;z-index:0;
}
.process-icon{
  width:60px;height:60px;border-radius:50%;background:var(--brand-primary-light);
  color:var(--brand-primary);display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;margin:0 auto 20px;position:relative;z-index:1;
}
.process-step h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.process-step p{font-size:.88rem;color:var(--text-light);line-height:1.6;margin:0}
@media(max-width:992px){
  .process-steps{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .process-steps{grid-template-columns:1fr}
}

/* FAQ */
.faq-layout{
  display:grid;grid-template-columns:420px 1fr;gap:40px;align-items:start;
}
.faq-intro{
  background:var(--brand-primary-light);border:1px solid var(--brand-primary);border-radius:var(--radius-lg);
  padding:36px;position:sticky;top:120px;
}
.faq-intro h3{font-size:1.5rem;font-weight:800;margin-bottom:14px;line-height:1.3}
.faq-intro p{color:var(--text-light);font-size:.95rem;margin-bottom:24px}
.faq-list .faq-item{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px 28px;margin-bottom:14px;transition:var(--transition);cursor:pointer;
}
.faq-item:hover{border-color:var(--brand-primary);box-shadow:var(--shadow-sm)}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-weight:600;font-size:1rem;color:var(--text);
}
.faq-question .faq-icon{
  width:32px;height:32px;border-radius:50%;background:var(--brand-primary-light);
  color:var(--brand-primary);display:flex;align-items:center;justify-content:center;
  flex-shrink:0;font-size:.8rem;transition:var(--transition);
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand-primary);color:#fff}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--text-light);
  font-size:.92rem;line-height:1.75;
}
.faq-item.open .faq-answer{max-height:300px;padding-top:14px}
@media(max-width:992px){
  .faq-layout{grid-template-columns:1fr}
  .faq-intro{position:static}
}

/* CTA */
.cta-section{
  padding:100px 0;color:#fff;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#1e3a8a 0%,#1a56db 50%,#3b82f6 100%);
}
.cta-section::before{
  content:"";position:absolute;top:-80px;left:10%;width:300px;height:300px;
  background:rgba(255,255,255,.05);border-radius:50%;
}
.cta-section::after{
  content:"";position:absolute;bottom:-60px;right:5%;width:200px;height:200px;
  background:rgba(245,158,11,.2);border-radius:50%;
}
.cta-inner{position:relative;z-index:2;max-width:640px;margin:0 auto}
.cta-inner h2{font-size:2.4rem;font-weight:800;margin-bottom:16px;line-height:1.25}
.cta-inner p{font-size:1.05rem;color:rgba(255,255,255,.85);margin-bottom:36px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
@media(max-width:768px){
  .cta-inner h2{font-size:1.9rem}
  .cta-actions{flex-direction:column}
}

/* Footer */
.site-footer{background:var(--dark);color:#fff;padding:70px 0 0}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:50px;
}
.footer-about .brand-logo{color:#fff;margin-bottom:18px}
.footer-about .brand-logo .logo-icon{background:linear-gradient(135deg,var(--accent),var(--accent-dark))}
.footer-about p{color:rgba(255,255,255,.6);font-size:.92rem;line-height:1.7;max-width:300px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);
  font-size:.9rem;transition:var(--transition);
}
.footer-social a:hover{background:var(--brand-primary);color:#fff}
.footer-col h4{
  font-size:1.05rem;font-weight:700;margin-bottom:20px;position:relative;
  padding-bottom:10px;
}
.footer-col h4::after{
  content:"";position:absolute;bottom:0;left:0;width:32px;height:2px;background:var(--accent);
}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{color:rgba(255,255,255,.6);font-size:.92rem;transition:var(--transition)}
.footer-col ul a:hover{color:var(--accent);padding-left:6px}
.footer-contact ul li{
  display:flex;align-items:flex-start;gap:12px;color:rgba(255,255,255,.6);
  font-size:.92rem;margin-bottom:14px;
}
.footer-contact ul li i{color:var(--accent);margin-top:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0;text-align:center;
  color:rgba(255,255,255,.4);font-size:.85rem;
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}
@media(max-width:992px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:50px}
}

/* Utility */
.text-primary{color:var(--brand-primary)!important}
.bg-light-soft{background:var(--brand-primary-light)}
.rounded-custom{border-radius:var(--radius-lg)!important}
.mt-5-custom{margin-top:4rem}
.mb-5-custom{margin-bottom:4rem}
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .fade-in{opacity:1;transform:none}
}

/* roulang page: category1 */
:root {
  --primary: #0c1f5e;
  --primary-dark: #08133d;
  --primary-light: #1c3a8a;
  --accent: #d4a62e;
  --accent-light: #f0c75e;
  --bg-body: #f5f7fc;
  --bg-card: #ffffff;
  --bg-muted: #edf1f9;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border-color: #e5e9f2;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(12, 31, 94, 0.06);
  --shadow-md: 0 6px 20px rgba(12, 31, 94, 0.08);
  --shadow-lg: 0 12px 40px rgba(12, 31, 94, 0.14);
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-main); background: var(--bg-body); color: var(--text-main); line-height: 1.75; font-size: 16px; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
ul, ol { list-style: none; }
button { font-family: inherit; }
input, select, textarea { font-family: inherit; }

.container { max-width: 1240px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }

.site-header { background: var(--primary); color: #fff; position: sticky; top: 0; z-index: 1080; box-shadow: 0 4px 20px rgba(8, 19, 61, 0.3); }
.header-top { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 16px; flex-wrap: wrap; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 20px; line-height: 1.2; }
.brand-logo:hover { color: var(--accent-light); }
.logo-icon { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--accent), #b8860b); border-radius: 10px; color: var(--primary-dark); font-size: 18px; flex-shrink: 0; }
.header-search { flex: 1; max-width: 520px; min-width: 220px; }
.search-form { display: flex; background: rgba(255, 255, 255, 0.12); border-radius: 30px; padding: 4px 4px 4px 18px; border: 1px solid rgba(255, 255, 255, 0.18); transition: background var(--transition-fast), border-color var(--transition-fast); }
.search-form:focus-within { background: #fff; border-color: var(--accent); }
.search-form input { flex: 1; background: transparent; border: none; outline: none; color: #fff; font-size: 14px; padding: 8px 0; min-width: 0; }
.search-form input::placeholder { color: rgba(255, 255, 255, 0.7); }
.search-form:focus-within input { color: var(--text-main); }
.search-form:focus-within input::placeholder { color: var(--text-muted); }
.search-form button { width: 38px; height: 38px; border-radius: 50%; border: none; background: var(--accent); color: var(--primary-dark); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: transform var(--transition-fast), background var(--transition-fast); flex-shrink: 0; }
.search-form button:hover { background: var(--accent-light); transform: scale(1.05); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 9px 22px; border-radius: 8px; font-weight: 500; font-size: 14px; border: 1px solid transparent; cursor: pointer; transition: all var(--transition-base); }
.btn-primary { background: var(--accent); color: var(--primary-dark); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(212, 166, 46, 0.4); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.1); color: var(--accent-light); border-color: var(--accent-light); }
.btn-light-solid { background: #fff; color: var(--primary); border-color: #fff; }
.btn-light-solid:hover { background: var(--accent-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; border: 1px solid rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.08); color: #fff; font-size: 18px; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle.active { background: var(--accent); color: var(--primary-dark); }

.main-nav { background: rgba(8, 19, 61, 0.96); border-top: 1px solid rgba(255, 255, 255, 0.08); border-bottom: 1px solid rgba(255, 255, 255, 0.04); }
.nav-list { display: flex; align-items: center; gap: 4px; padding: 6px 0; }
.nav-list li a { display: inline-flex; align-items: center; gap: 8px; color: rgba(255, 255, 255, 0.82); padding: 9px 18px; border-radius: 8px; font-size: 15px; font-weight: 500; transition: all var(--transition-fast); white-space: nowrap; }
.nav-list li a i { font-size: 14px; opacity: 0.85; }
.nav-list li a:hover { color: var(--accent-light); background: rgba(255, 255, 255, 0.07); }
.nav-list li a.active { background: var(--accent); color: var(--primary-dark); }

/* Category Hero */
.category-hero { position: relative; padding: 80px 0 70px; background: linear-gradient(135deg, rgba(8, 19, 61, 0.94), rgba(12, 31, 94, 0.82)), url('/assets/images/backpic/back-1.png') center/cover fixed; color: #fff; }
.category-hero-content { max-width: 760px; }
.category-hero .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-bottom: 18px; flex-wrap: wrap; }
.category-hero .breadcrumb a { color: rgba(255, 255, 255, 0.8); }
.category-hero .breadcrumb a:hover { color: var(--accent-light); }
.category-hero .breadcrumb i { font-size: 12px; }
.category-hero .hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.22); padding: 6px 16px; border-radius: 30px; font-size: 13px; margin-bottom: 20px; backdrop-filter: blur(6px); }
.category-hero h1 { font-size: 42px; font-weight: 800; line-height: 1.25; margin-bottom: 18px; }
.category-hero h1 span { color: var(--accent-light); }
.category-hero p.lead { font-size: 17px; color: rgba(255, 255, 255, 0.88); margin-bottom: 28px; line-height: 1.8; }

/* Info ticker */
.info-ticker { background: var(--accent); color: var(--primary-dark); padding: 10px 0; border-bottom: 2px solid #b8860b; }
.info-ticker .container { display: flex; align-items: center; gap: 16px; overflow: hidden; }
.ticker-label { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: 13px; padding: 4px 12px; background: var(--primary); color: #fff; border-radius: 20px; flex-shrink: 0; }
.ticker-content { flex: 1; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Section base */
.section-block { padding: 80px 0; }
.section-muted { background: var(--bg-muted); }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 40px; flex-wrap: wrap; }
.section-title-wrap { max-width: 720px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px; }
.section-tag::before { content: ""; width: 32px; height: 3px; background: var(--accent); border-radius: 3px; }
.section-title { font-size: 32px; font-weight: 800; color: var(--primary-dark); line-height: 1.3; margin-bottom: 10px; }
.section-desc { color: var(--text-muted); font-size: 15px; line-height: 1.8; }
.section-more a { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 14px; font-weight: 600; padding: 8px 18px; border: 1px solid var(--border-color); border-radius: 30px; background: #fff; transition: all var(--transition-fast); }
.section-more a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Guide categories cards */
.guide-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.guide-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 30px 24px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: all var(--transition-base); position: relative; overflow: hidden; }
.guide-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity var(--transition-base); }
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.guide-card:hover::before { opacity: 1; }
.guide-card .card-icon { width: 56px; height: 56px; border-radius: 16px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 18px; transition: transform var(--transition-base); }
.guide-card:hover .card-icon { transform: scale(1.05) rotate(-3deg); }
.guide-card h3 { font-size: 18px; font-weight: 700; color: var(--primary-dark); margin-bottom: 10px; }
.guide-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
.guide-card .card-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.guide-card .card-link i { transition: transform var(--transition-fast); }
.guide-card .card-link:hover i { transform: translateX(4px); }

/* Article list */
.article-list { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.article-item { display: flex; gap: 20px; background: var(--bg-card); border-radius: var(--radius-lg); padding: 18px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: all var(--transition-base); }
.article-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.article-item .article-thumb { width: 180px; height: 130px; flex-shrink: 0; border-radius: var(--radius-md); overflow: hidden; }
.article-item .article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.article-item:hover .article-thumb img { transform: scale(1.06); }
.article-item .article-body { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.article-item .article-meta { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.article-item .article-meta .meta-tag { display: inline-flex; align-items: center; gap: 4px; background: var(--bg-muted); color: var(--primary); padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.article-item h3 { font-size: 17px; font-weight: 700; color: var(--text-main); line-height: 1.45; margin-bottom: 8px; }
.article-item h3 a { color: inherit; }
.article-item h3 a:hover { color: var(--primary); }
.article-item p { font-size: 14px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 10px; }
.article-item .article-read { margin-top: auto; font-size: 13px; color: var(--accent); font-weight: 600; }

/* Steps */
.steps-section { position: relative; background: linear-gradient(135deg, var(--primary-dark), var(--primary)), url('/assets/images/backpic/back-2.png') center/cover fixed; color: #fff; }
.steps-section .section-tag { color: var(--accent-light); }
.steps-section .section-title { color: #fff; }
.steps-section .section-desc { color: rgba(255, 255, 255, 0.75); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 20px; }
.step-item { background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.14); border-radius: var(--radius-lg); padding: 28px 22px; text-align: center; backdrop-filter: blur(4px); transition: all var(--transition-base); }
.step-item:hover { background: rgba(255, 255, 255, 0.13); transform: translateY(-5px); }
.step-num { width: 48px; height: 48px; margin: 0 auto 16px; border-radius: 50%; background: var(--accent); color: var(--primary-dark); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; }
.step-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-item p { font-size: 14px; color: rgba(255, 255, 255, 0.78); line-height: 1.7; }

/* FAQ */
.faq-container { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 14px; overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow var(--transition-fast); }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text-main); list-style: none; transition: color var(--transition-fast); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i { color: var(--accent); font-size: 20px; flex-shrink: 0; transition: transform var(--transition-base); }
.faq-item[open] summary i.fa-chevron-down { transform: rotate(180deg); }
.faq-item[open] summary { color: var(--primary); }
.faq-item .faq-answer { padding: 0 24px 22px; font-size: 15px; color: var(--text-muted); line-height: 1.8; border-top: 1px solid var(--border-color); padding-top: 16px; }

/* CTA */
.cta-section { position: relative; padding: 74px 0; background: linear-gradient(120deg, rgba(8, 19, 61, 0.92), rgba(12, 31, 94, 0.82)), url('/assets/images/backpic/back-3.png') center/cover; color: #fff; text-align: center; }
.cta-section h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; }
.cta-section p { font-size: 16px; color: rgba(255, 255, 255, 0.82); margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Sidebar / content layout for category page */
.category-main-layout { display: grid; grid-template-columns: 1fr; gap: 40px; }

/* Hot ranking */
.hot-list { display: flex; flex-direction: column; gap: 12px; }
.hot-item { display: flex; align-items: center; gap: 14px; background: var(--bg-card); padding: 14px 18px; border-radius: var(--radius-md); border: 1px solid var(--border-color); transition: all var(--transition-fast); }
.hot-item:hover { box-shadow: var(--shadow-sm); transform: translateX(4px); border-color: var(--accent); }
.hot-num { width: 34px; height: 34px; border-radius: 8px; background: var(--bg-muted); color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 15px; flex-shrink: 0; }
.hot-item:nth-child(1) .hot-num { background: var(--accent); color: var(--primary-dark); }
.hot-item:nth-child(2) .hot-num { background: #b8c5e0; color: var(--primary-dark); }
.hot-item:nth-child(3) .hot-num { background: #d9c9a3; color: var(--primary-dark); }
.hot-item a { font-size: 15px; font-weight: 600; color: var(--text-main); line-height: 1.4; }
.hot-item a:hover { color: var(--primary); }

/* Footer */
.site-footer { background: var(--primary-dark); color: rgba(255, 255, 255, 0.82); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer-about .brand-logo { margin-bottom: 16px; }
.footer-about p { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.68); margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.14); display: inline-flex; align-items: center; justify-content: center; color: rgba(255, 255, 255, 0.8); transition: all var(--transition-fast); }
.footer-social a:hover { background: var(--accent); color: var(--primary-dark); transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 3px; background: var(--accent); border-radius: 3px; }
.footer-col ul li { margin-bottom: 10px; font-size: 14px; }
.footer-col ul li a { color: rgba(255, 255, 255, 0.68); transition: all var(--transition-fast); }
.footer-col ul li a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-col ul li i { margin-right: 8px; color: var(--accent); width: 16px; }
.footer-contact li { display: flex; align-items: center; gap: 4px; color: rgba(255, 255, 255, 0.68); }
.footer-bottom { display: flex; align-items: center; justify-content: center; padding: 22px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255, 255, 255, 0.5); }

/* Responsive */
@media (max-width: 1024px) {
  .guide-cards { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .category-hero h1 { font-size: 34px; }
}
@media (max-width: 768px) {
  .header-top { flex-wrap: wrap; }
  .header-search { order: 3; flex-basis: 100%; max-width: 100%; }
  .nav-toggle { display: inline-flex; }
  .main-nav { display: none; }
  .main-nav.open { display: block; }
  .main-nav.open .nav-list { flex-direction: column; align-items: stretch; padding: 10px 0; }
  .main-nav.open .nav-list li a { padding: 12px 16px; justify-content: flex-start; border-radius: 8px; }
  .category-hero { padding: 50px 0 46px; }
  .category-hero h1 { font-size: 28px; }
  .section-block { padding: 56px 0; }
  .section-title { font-size: 25px; }
  .article-list { grid-template-columns: 1fr; }
  .article-item { flex-direction: column; }
  .article-item .article-thumb { width: 100%; height: 190px; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .category-hero { background-attachment: scroll; }
}
@media (max-width: 520px) {
  .guide-cards { grid-template-columns: 1fr; }
  .container { padding-left: 14px; padding-right: 14px; }
  .header-top { padding: 12px 0; }
  .brand-logo { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; }
  .btn { padding: 8px 14px; font-size: 13px; }
  .btn span { display: none; }
  .category-hero h1 { font-size: 24px; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .cta-buttons .btn { width: 100%; }
  .footer-bottom p { font-size: 12px; line-height: 1.6; }
}

/* roulang page: category2 */
:root {
  --primary: #1a4d8f;
  --primary-dark: #123a6b;
  --primary-light: #e8f0fb;
  --accent: #d4942a;
  --accent-light: #fdf3e2;
  --bg-body: #f8faff;
  --bg-alt: #eff4fc;
  --bg-dark: #0d1b2e;
  --text-main: #1e2b3a;
  --text-muted: #536572;
  --border: #dbe3ee;
  --card-shadow: 0 6px 24px rgba(16, 42, 82, 0.08);
  --card-hover-shadow: 0 12px 36px rgba(16, 42, 82, 0.14);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: all 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  color: var(--text-main);
  background: var(--bg-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, button, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
.container-fluid { padding-left: 24px; padding-right: 24px; }

/* ========== 导航 ========== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(16, 42, 82, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-top { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 16px; }
.brand-logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: var(--text-main); white-space: nowrap; }
.logo-icon { width: 40px; height: 40px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; box-shadow: 0 4px 12px rgba(26, 77, 143, 0.3); }
.header-search { flex: 1; max-width: 460px; margin: 0 12px; }
.search-form { display: flex; align-items: center; background: var(--bg-body); border: 1px solid var(--border); border-radius: 50px; padding: 4px 6px 4px 18px; transition: var(--transition); }
.search-form:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26, 77, 143, 0.12); }
.search-form input { flex: 1; border: none; background: transparent; outline: none; font-size: 0.9rem; color: var(--text-main); padding: 8px 0; }
.search-form button { width: 38px; height: 38px; border-radius: 50%; border: none; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: var(--transition); }
.search-form button:hover { background: var(--primary-dark); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.btn { border-radius: 50px; font-weight: 600; padding: 9px 20px; font-size: 0.9rem; border: none; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(26, 77, 143, 0.25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26, 77, 143, 0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(212, 148, 42, 0.3); }
.btn-accent:hover { background: #c0831f; transform: translateY(-2px); }
.btn-outline { background: transparent; border: 1px solid rgba(255,255,255,0.7); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }
.nav-toggle { display: none; background: transparent; border: none; width: 40px; height: 40px; border-radius: 8px; color: var(--text-main); font-size: 1.2rem; align-items: center; justify-content: center; }
.main-nav { border-top: 1px solid var(--border); background: #fff; }
.nav-list { display: flex; gap: 4px; padding: 6px 0; overflow-x: auto; }
.nav-list li a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 40px;
  font-size: 0.94rem; font-weight: 600; color: var(--text-muted);
  transition: var(--transition); white-space: nowrap;
}
.nav-list li a i { font-size: 0.9rem; }
.nav-list li a:hover { color: var(--primary); background: var(--primary-light); }
.nav-list li a.active { color: #fff; background: var(--primary); box-shadow: 0 4px 14px rgba(26, 77, 143, 0.3); }
@media (max-width: 991px) {
  .header-search { max-width: 280px; }
}
@media (max-width: 767px) {
  .header-top { flex-wrap: wrap; padding: 10px 0; }
  .brand-logo { font-size: 1.15rem; }
  .brand-logo .logo-icon { width: 34px; height: 34px; font-size: 0.85rem; }
  .header-search { order: 3; width: 100%; max-width: 100%; margin: 8px 0 0; flex: 1 0 100%; }
  .search-form input { padding: 6px 0; }
  .btn-primary span { display: none; }
  .btn-primary { width: 38px; height: 38px; padding: 0; justify-content: center; border-radius: 50%; }
  .nav-toggle { display: flex; }
  .main-nav { display: none; }
  .main-nav.open { display: block; }
  .nav-list { flex-direction: column; padding: 10px; }
  .nav-list li a { justify-content: flex-start; width: 100%; border-radius: 10px; }
}
@media (min-width: 768px) {
  .main-nav { display: block !important; }
}

/* ========== Hero ========== */
.page-hero {
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position: relative;
  padding: 88px 0;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(13, 27, 46, 0.88) 30%, rgba(26, 77, 143, 0.55) 100%);
  z-index: 1;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(6px);
  padding: 6px 18px; border-radius: 40px;
  font-size: 0.85rem; font-weight: 600;
  margin-bottom: 20px; letter-spacing: 0.5px;
}
.hero-badge i { color: #f3c66b; }
.page-hero h1 {
  font-size: 2.9rem; font-weight: 800; line-height: 1.25;
  margin-bottom: 16px; max-width: 640px;
}
.page-hero h1 span { color: #f3c66b; }
.page-hero p {
  font-size: 1.15rem; opacity: 0.92; max-width: 620px;
  margin-bottom: 28px; line-height: 1.8;
}
.hero-stats { display: flex; gap: 32px; margin-top: 36px; flex-wrap: wrap; }
.hero-stats .stat-item { border-left: 3px solid #f3c66b; padding-left: 14px; }
.hero-stats .stat-item strong { font-size: 1.7rem; display: block; font-weight: 800; }
.hero-stats .stat-item span { font-size: 0.9rem; opacity: 0.85; }
@media (max-width: 767px) {
  .page-hero { padding: 66px 0; }
  .page-hero h1 { font-size: 1.9rem; }
  .page-hero p { font-size: 1rem; }
  .hero-stats { gap: 20px; }
}

/* ========== 板块通用 ========== */
.section-block { padding: 80px 0; }
.section-block.alt-bg { background: var(--bg-alt); }
.section-head { max-width: 720px; margin: 0 auto 50px; text-align: center; }
.section-head .section-tag {
  display: inline-block; background: var(--accent-light); color: #b27a1a;
  padding: 5px 16px; border-radius: 40px; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 1px; margin-bottom: 12px;
}
.section-head h2 {
  font-size: 2rem; font-weight: 800; color: var(--text-main);
  margin-bottom: 12px; line-height: 1.3;
}
.section-head p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; }
@media (max-width: 767px) {
  .section-block { padding: 56px 0; }
  .section-head h2 { font-size: 1.55rem; }
}

/* ========== 卡片 ========== */
.feature-grid .feature-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 32px 24px;
  transition: var(--transition); height: 100%;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--card-hover-shadow); border-color: rgba(26,77,143,0.2); }
.feature-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-light), #dbe8fa);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: var(--primary); margin-bottom: 18px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); color: #fff; transform: rotate(-6deg); }
.feature-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }
.feature-card a.learn-more {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.88rem; font-weight: 600; color: var(--primary);
  margin-top: 14px;
}
.feature-card a.learn-more i { font-size: 0.78rem; transition: transform 0.2s; }
.feature-card a.learn-more:hover i { transform: translateX(4px); }

/* ========== 文章列表 ========== */
.article-grid .article-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
  overflow: hidden; transition: var(--transition); height: 100%;
  display: flex; flex-direction: column;
}
.article-card:hover { transform: translateY(-6px); box-shadow: var(--card-hover-shadow); }
.article-thumb { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.article-card:hover .article-thumb img { transform: scale(1.05); }
.article-badge {
  position: absolute; top: 14px; left: 14px;
  background: rgba(26,77,143,0.92); color: #fff;
  padding: 4px 12px; border-radius: 30px; font-size: 0.75rem; font-weight: 600;
  backdrop-filter: blur(4px);
}
.article-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.article-meta { display: flex; align-items: center; gap: 14px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }
.article-meta i { margin-right: 3px; opacity: 0.7; }
.article-body h3 { font-size: 1.05rem; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.article-body h3 a { color: var(--text-main); }
.article-body h3 a:hover { color: var(--primary); }
.article-body p { font-size: 0.89rem; color: var(--text-muted); line-height: 1.7; flex: 1; }
.article-link {
  margin-top: 16px; font-size: 0.87rem; font-weight: 600; color: var(--primary);
  display: inline-flex; align-items: center; gap: 6px;
}
.article-link:hover { color: var(--primary-dark); gap: 10px; }
@media (max-width: 575px) {
  .article-body { padding: 18px; }
}

/* ========== 数据统计 ========== */
.data-block {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #162a45 100%);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.data-block::before {
  content: '';
  position: absolute; top: -60px; right: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: rgba(255,255,255,0.04);
}
.data-item { text-align: center; padding: 24px 16px; border-radius: var(--radius-md); background: rgba(255,255,255,0.05); backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.08); height: 100%; transition: var(--transition); }
.data-item:hover { background: rgba(255,255,255,0.09); transform: translateY(-4px); }
.data-item .icon { font-size: 1.6rem; color: #f3c66b; margin-bottom: 12px; }
.data-item strong { font-size: 2rem; font-weight: 800; color: #fff; display: block; }
.data-item span { font-size: 0.9rem; color: rgba(255,255,255,0.7); }
@media (max-width: 767px) {
  .data-block { padding: 48px 0; }
  .data-item strong { font-size: 1.5rem; }
}

/* ========== 流程 ========== */
.step-card { text-align: center; padding: 32px 20px; position: relative; }
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem;
  margin: 0 auto 18px; box-shadow: 0 4px 14px rgba(26,77,143,0.35);
  position: relative; z-index: 2;
}
.step-card::after {
  content: '';
  position: absolute; top: 48px; left: calc(50% + 50px); right: calc(-50% + 50px);
  height: 2px; background: var(--border);
}
.step-card:last-child::after { display: none; }
.step-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 0.89rem; color: var(--text-muted); line-height: 1.7; }
@media (max-width: 767px) {
  .step-card::after { display: none; }
}

/* ========== FAQ ========== */
.faq-accordion { max-width: 800px; margin: 0 auto; }
.accordion-item { background: #fff; border: 1px solid var(--border) !important; margin-bottom: 16px; border-radius: var(--radius-md) !important; overflow: hidden; }
.accordion-button {
  font-weight: 600; font-size: 1rem; color: var(--text-main);
  padding: 18px 22px; background: #fff; box-shadow: none !important;
}
.accordion-button:focus { box-shadow: none; border-color: var(--border); }
.accordion-button:not(.collapsed) { background: var(--primary-light); color: var(--primary); }
.accordion-button i { margin-right: 10px; color: var(--accent); }
.accordion-body { padding: 8px 22px 22px; color: var(--text-muted); font-size: 0.94rem; line-height: 1.85; }
.accordion-item .accordion-button .fa-chevron-down { transition: transform 0.3s; font-size: 0.8rem; color: var(--text-muted); }
.accordion-item .accordion-button:not(.collapsed) .fa-chevron-down { transform: rotate(180deg); }

/* ========== CTA ========== */
.cta-section { background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; position: relative; padding: 80px 0; text-align: center; color: #fff; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(13,27,46,0.92), rgba(26,77,143,0.82)); }
.cta-section .container { position: relative; z-index: 2; max-width: 700px; }
.cta-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 1.05rem; opacity: 0.92; margin-bottom: 32px; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
@media (max-width: 767px) {
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 1.5rem; }
}

/* ========== 页脚 ========== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.75); padding: 60px 0 0; }
.site-footer .brand-logo { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer-about p { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.8; margin: 18px 0 20px; max-width: 360px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.8); font-size: 0.85rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 18px; position: relative; padding-bottom: 8px; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 28px; height: 3px; background: var(--accent); border-radius: 3px; }
.footer-col ul li { margin-bottom: 10px; font-size: 0.9rem; }
.footer-col ul li a { color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-col ul li a:hover { color: #fff; padding-left: 5px; }
.footer-col ul li i { margin-right: 8px; color: rgba(255,255,255,0.35); width: 16px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0; text-align: center;
  font-size: 0.82rem; color: rgba(255,255,255,0.4);
}
@media (max-width: 991px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 575px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { padding-top: 44px; }
}

/* roulang page: article */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d4a7a;
            --primary-dark: #12283f;
            --accent: #d4a24e;
            --accent-hover: #bd8c3a;
            --bg: #f4f6f9;
            --bg-white: #ffffff;
            --bg-dark: #12283f;
            --text: #1e293b;
            --text-soft: #5a6b7d;
            --text-muted: #8a9bad;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 6px 24px rgba(15, 23, 42, 0.07);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        ul, ol {
            padding-left: 0;
            list-style: none;
        }

        button, input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 50px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.5;
            justify-content: center;
        }

        .btn i {
            font-size: 14px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff !important;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark) !important;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(212, 162, 78, 0.3);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary) !important;
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff !important;
            transform: translateY(-2px);
        }

        .btn-light {
            background: var(--bg);
            border-color: var(--border);
            color: var(--text) !important;
        }

        .btn-light:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff !important;
            transform: translateY(-2px);
        }

        .btn-block {
            width: 100%;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 50px;
            line-height: 1.4;
            background: var(--bg);
            color: var(--primary);
            border: 1px solid var(--border);
        }

        .badge-accent {
            background: rgba(212, 162, 78, 0.14);
            color: var(--accent-hover);
            border-color: rgba(212, 162, 78, 0.3);
            font-weight: 600;
        }

        .section-tag {
            display: inline-block;
            background: linear-gradient(120deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .section-subtitle {
            color: var(--text-soft);
            font-size: 16px;
            max-width: 640px;
            margin-bottom: 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 40px;
            padding: 0 16px;
        }

        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== Header ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
        }

        .header-top {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 14px 0;
            position: relative;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--primary) !important;
            white-space: nowrap;
            line-height: 1.3;
        }

        .brand-logo:hover .logo-icon {
            transform: rotate(-6deg) scale(1.05);
        }

        .logo-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff !important;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
            transition: var(--transition);
        }

        .header-search {
            flex: 1;
            max-width: 540px;
            margin: 0 auto;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: 50px;
            padding: 3px 3px 3px 20px;
            transition: var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(30, 58, 95, 0.1);
        }

        .search-form input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            padding: 9px 0;
            color: var(--text);
            min-width: 0;
        }

        .search-form input::placeholder {
            color: var(--text-muted);
        }

        .search-form button {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border: none;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .search-form button:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }

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

        .header-actions .btn {
            padding: 9px 20px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--bg);
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .main-nav {
            background: var(--primary);
            border-top: none;
        }

        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
        }

        .nav-list li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 22px;
            color: rgba(255, 255, 255, 0.88) !important;
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: var(--transition);
            position: relative;
        }

        .nav-list li a i {
            font-size: 14px;
            opacity: 0.85;
        }

        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff !important;
            transform: translateY(-1px);
        }

        .nav-list li a.active {
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(212, 162, 78, 0.35);
        }

        .nav-list li a.active i {
            opacity: 1;
        }

        /* ========== Page Hero ========== */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
            padding: 64px 0;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(18, 40, 63, 0.96) 0%, rgba(30, 58, 95, 0.88) 55%, rgba(30, 58, 95, 0.68) 100%);
        }

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

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--accent);
        }

        .breadcrumb-nav .separator {
            opacity: 0.5;
            font-size: 12px;
        }

        .breadcrumb-nav .current {
            color: var(--accent);
            font-weight: 500;
            max-width: 280px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 14px;
            max-width: 760px;
        }

        .page-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            flex-wrap: wrap;
        }

        .page-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .page-hero .hero-meta i {
            color: var(--accent);
        }

        /* ========== Article Section ========== */
        .article-section {
            padding: 50px 0 30px;
        }

        .article-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 30px;
        }

        .article-category {
            margin-bottom: 14px;
        }

        .article-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--text-soft);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-meta i {
            color: var(--primary);
            opacity: 0.7;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-dark);
            margin: 28px 0 12px;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.4em;
            margin-bottom: 22px;
        }

        .article-body li {
            margin-bottom: 8px;
            position: relative;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 22px auto;
            box-shadow: var(--shadow-md);
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg);
            padding: 16px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-soft);
            font-style: normal;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }

        .article-body table th {
            background: var(--primary);
            color: #fff;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
        }

        .article-body table td {
            border-bottom: 1px solid var(--border);
            padding: 12px 14px;
        }

        .article-body table tr:hover td {
            background: var(--bg);
        }

        .article-body a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px dashed var(--primary-light);
        }

        .article-body a:hover {
            color: var(--accent-hover);
            border-bottom-color: var(--accent-hover);
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
            padding-top: 22px;
            border-top: 1px solid var(--border-light);
        }

        .tag-label {
            font-size: 14px;
            color: var(--text-soft);
            font-weight: 600;
            margin-right: 4px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-soft) !important;
            transition: var(--transition);
        }

        .tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff !important;
            transform: translateY(-2px);
        }

        .article-footer-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 30px;
            padding-top: 22px;
            border-top: 1px solid var(--border-light);
        }

        .nav-buttons-right {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .not-found-box {
            text-align: center;
            padding: 40px 20px;
        }

        .not-found-icon {
            width: 72px;
            height: 72px;
            border-radius: 24px;
            background: rgba(212, 162, 78, 0.12);
            color: var(--accent-hover);
            font-size: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }

        .not-found-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .not-found-box p {
            color: var(--text-soft);
            margin-bottom: 24px;
        }

        /* ========== Sidebar ========== */
        .sidebar {
            position: sticky;
            top: 120px;
        }

        .sidebar-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
            transition: var(--transition);
        }

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

        .sidebar-card-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border-light);
        }

        .sidebar-card-header i {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: rgba(30, 58, 95, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .sidebar-card-header h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .info-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-bottom: 10px;
            border-bottom: 1px dashed var(--border-light);
        }

        .info-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .info-list li span {
            font-size: 14px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .info-list li strong {
            font-size: 14px;
            color: var(--text);
            text-align: right;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .sidebar-categories {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .category-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: var(--transition);
            background: var(--bg-white);
        }

        .category-item .cat-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
        }

        .category-item--guide .cat-icon {
            background: rgba(30, 58, 95, 0.12);
            color: var(--primary);
        }

        .category-item--safety .cat-icon {
            background: rgba(212, 162, 78, 0.16);
            color: var(--accent-hover);
        }

        .category-item--tutorial .cat-icon {
            background: rgba(22, 101, 52, 0.12);
            color: #166534;
        }

        .category-item .cat-info {
            flex: 1;
            min-width: 0;
        }

        .category-item .cat-info span {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .category-item .cat-info small {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .category-item .arrow {
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .category-item:hover {
            border-color: var(--primary);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }

        .category-item:hover .arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        .sidebar-card--help {
            background: linear-gradient(145deg, var(--primary), var(--primary-dark));
            border-color: transparent;
            color: #fff;
            text-align: center;
        }

        .sidebar-card--help .help-icon {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(255, 255, 255, 0.14);
            color: var(--accent);
            font-size: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }

        .sidebar-card--help h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .sidebar-card--help p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .sidebar-card--help .btn {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
        }

        .sidebar-card--help .btn:hover {
            background: #e2b55f;
            border-color: #e2b55f;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 162, 78, 0.35);
        }

        /* ========== Explore Section ========== */
        .explore-section {
            padding: 60px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
        }

        .explore-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .explore-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: var(--primary-light);
        }

        .explore-card .card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

        .explore-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .explore-card .card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.45), transparent 50%);
        }

        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.95);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 50px;
            box-shadow: var(--shadow-sm);
        }

        .card-tag--accent {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .explore-card .card-body {
            padding: 22px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .explore-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .explore-card .card-body p {
            font-size: 14px;
            color: var(--text-soft);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary) !important;
            transition: var(--transition);
        }

        .card-link i {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: var(--transition);
        }

        .card-link:hover {
            color: var(--accent-hover) !important;
        }

        .card-link:hover i {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateX(4px);
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }

        .faq-item h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .faq-item h3 i {
            color: var(--accent);
            font-size: 16px;
            margin-top: 3px;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-soft);
            line-height: 1.7;
            margin: 0;
            padding-left: 26px;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 70px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(18, 40, 63, 0.96), rgba(30, 58, 95, 0.92));
        }

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

        .cta-box {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            margin-bottom: 28px;
        }

        .cta-box .btn {
            font-size: 16px;
            padding: 14px 34px;
            background: var(--accent);
            border-color: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(212, 162, 78, 0.4);
        }

        .cta-box .btn:hover {
            background: #fff;
            border-color: #fff;
            color: var(--primary) !important;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 255, 255, 0.2);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-about .brand-logo {
            color: #fff !important;
            margin-bottom: 14px;
        }

        .footer-about .brand-logo .logo-icon {
            background: linear-gradient(135deg, var(--accent), #e2b55f);
            color: var(--primary-dark) !important;
            box-shadow: 0 4px 16px rgba(212, 162, 78, 0.3);
        }

        .footer-about p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            max-width: 340px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8) !important;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark) !important;
            transform: translateY(-3px);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .footer-col ul li {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col ul li i {
            color: var(--accent);
            font-size: 13px;
            width: 18px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6) !important;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent) !important;
            padding-left: 4px;
        }

        .footer-contact ul li {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 991.98px) {
            .header-top {
                flex-wrap: wrap;
            }

            .header-search {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
                margin: 4px 0 0;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--primary);
                box-shadow: var(--shadow-lg);
                padding: 10px 0 16px;
                display: none;
                border-radius: 0 0 16px 16px;
            }

            .main-nav.open {
                display: block;
            }

            .main-nav .container {
                padding: 0 24px;
                justify-content: stretch;
            }

            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .nav-list li a {
                padding: 14px 16px;
                font-size: 15px;
            }

            .nav-list li a.active {
                background: rgba(255, 255, 255, 0.15);
                color: #fff !important;
                box-shadow: none;
            }

            .sidebar {
                position: static;
                margin-top: 30px;
            }
        }

        @media (max-width: 768px) {
            .header-actions .btn span {
                display: none;
            }

            .header-actions .btn {
                width: 42px;
                height: 42px;
                padding: 0;
            }

            .header-actions .btn i {
                font-size: 16px;
                margin: 0;
            }

            .page-hero {
                padding: 48px 0;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .article-card {
                padding: 24px 20px;
            }

            .article-title {
                font-size: 23px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

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

            .explore-card .card-image {
                aspect-ratio: 16 / 8;
            }

            .section-title {
                font-size: 26px;
            }

            .cta-box h2 {
                font-size: 28px;
            }
        }

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

            .header-top {
                gap: 10px;
                padding: 12px 0;
            }

            .brand-logo {
                font-size: 16px;
            }

            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 16px;
                border-radius: 10px;
            }

            .search-form input {
                font-size: 13px;
            }

            .search-form button {
                width: 36px;
                height: 36px;
            }

            .page-hero {
                padding: 40px 0;
            }

            .page-hero h1 {
                font-size: 23px;
            }

            .page-hero .hero-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-section {
                padding: 30px 0 20px;
            }

            .article-card {
                padding: 20px 16px;
                border-radius: 14px;
            }

            .article-title {
                font-size: 20px;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .article-body {
                font-size: 15px;
            }

            .article-body h2 {
                font-size: 20px;
            }

            .article-body h3 {
                font-size: 17px;
            }

            .article-footer-nav {
                flex-direction: column;
                align-items: stretch;
            }

            .article-footer-nav .btn {
                width: 100%;
            }

            .nav-buttons-right {
                flex-direction: column;
                width: 100%;
            }

            .nav-buttons-right .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .section-title {
                font-size: 22px;
            }

            .section-header {
                margin-bottom: 30px;
            }

            .explore-section {
                padding: 40px 0;
            }

            .faq-section {
                padding: 40px 0;
            }

            .cta-section {
                padding: 50px 0;
            }

            .cta-box h2 {
                font-size: 24px;
            }

            .cta-box .btn {
                width: 100%;
                max-width: 300px;
            }

            .tag {
                padding: 4px 10px;
                font-size: 12px;
            }

            .sidebar-card {
                padding: 18px;
            }

            .category-item .cat-info span {
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #1a56db;
  --primary-dark: #1e429f;
  --primary-light: #e8f0fe;
  --accent: #0e9f6e;
  --accent-light: #e3f9f0;
  --warning: #d97706;
  --warning-light: #fdf3e3;
  --bg-body: #f5f7fb;
  --bg-white: #ffffff;
  --bg-dark: #0f172a;
  --bg-gray: #f8fafc;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.08),0 2px 4px -2px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 24px -8px rgba(0,0,0,.12);
  --spacing-section: 72px;
  --transition-base: all .25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  background: var(--bg-body);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

h1,h2,h3,h4,h5,h6 {
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.3;
}

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

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

input,button,textarea {
  font-family: inherit;
}

.container {
  max-width: 1240px;
  padding-left: 20px;
  padding-right: 20px;
}

/* Header */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-top {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 0;
  flex-wrap: wrap;
}

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

.brand-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), #2563eb);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 4px 10px rgba(26,86,219,.25);
}

.brand-logo span:last-child {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--text-dark);
  white-space: nowrap;
}

.header-search {
  flex: 1;
  max-width: 560px;
  margin: 0 auto;
}

.search-form {
  display: flex;
  background: var(--bg-gray);
  border: 1.5px solid var(--border-color);
  border-radius: 50px;
  overflow: hidden;
  transition: var(--transition-base);
}

.search-form:focus-within {
  border-color: var(--primary);
  background: var(--bg-white);
  box-shadow: 0 0 0 3px rgba(26,86,219,.12);
}

.search-form input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--text-body);
}

.search-form input::placeholder {
  color: var(--text-muted);
}

.search-form button {
  width: 46px;
  border: none;
  background: transparent;
  color: var(--primary);
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition-base);
}

.search-form button:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #2563eb);
  border: none;
  color: #fff !important;
  padding: 9px 22px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(26,86,219,.25);
  transition: var(--transition-base);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(26,86,219,.35);
  background: linear-gradient(135deg, var(--primary-dark), #1d4ed8);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border-color);
  background: var(--bg-white);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--text-dark);
  font-size: 17px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle.active i::before {
  content: "\f00d";
}

.main-nav {
  background: var(--bg-white);
  border-top: 1px solid var(--border-color);
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.nav-list li a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 17px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  border-radius: 8px;
  white-space: nowrap;
  position: relative;
}

.nav-list li a i {
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition-base);
}

.nav-list li a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-list li a:hover i {
  color: var(--primary);
}

.nav-list li a.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.nav-list li a.active::after {
  content: "";
  position: absolute;
  left: 17px;
  right: 17px;
  bottom: -1px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px 2px 0 0;
}

/* Hero Banner */
.page-hero {
  background: linear-gradient(rgba(15,23,42,.78), rgba(15,23,42,.62)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 76px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(26,86,219,.35), transparent 70%);
  border-radius: 50%;
}

.page-hero .breadcrumb-hero {
  font-size: 14px;
  margin-bottom: 14px;
  color: rgba(255,255,255,.75);
}

.page-hero .breadcrumb-hero a {
  color: rgba(255,255,255,.85);
}

.page-hero .breadcrumb-hero a:hover {
  color: #fff;
}

.page-hero h1 {
  color: #fff;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: .5px;
}

.page-hero p {
  font-size: 16px;
  max-width: 640px;
  color: rgba(255,255,255,.88);
  margin-bottom: 24px;
  line-height: 1.8;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.22);
  color: #fff;
  border-radius: 50px;
  padding: 5px 14px;
  font-size: 13px;
  backdrop-filter: blur(6px);
}

/* Section */
.section-block {
  padding: var(--spacing-section) 0;
}

.section-title-wrap {
  margin-bottom: 36px;
}

.section-title-wrap .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 50px;
  letter-spacing: .5px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: 29px;
  font-weight: 800;
  margin-bottom: 10px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 660px;
}

/* Card */
.card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  background: var(--bg-white);
  height: 100%;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: #cbd5e1;
}

.card-img-top {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  object-fit: cover;
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.45;
}

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

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

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-top: auto;
}

/* Badge */
.badge {
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.badge-primary-light {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-success-light {
  background: var(--accent-light);
  color: var(--accent);
}

.badge-warning-light {
  background: var(--warning-light);
  color: var(--warning);
}

/* Quick Tutorial Cards */
.quick-card {
  text-align: center;
  padding: 28px 20px 24px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition-base);
  height: 100%;
}

.quick-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: #cbd5e1;
}

.quick-card .quick-icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 16px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
}

.quick-card.blue .quick-icon {
  background: linear-gradient(135deg, #1a56db, #3b82f6);
  box-shadow: 0 6px 14px rgba(26,86,219,.25);
}

.quick-card.green .quick-icon {
  background: linear-gradient(135deg, #0e9f6e, #10b981);
  box-shadow: 0 6px 14px rgba(14,159,110,.25);
}

.quick-card.orange .quick-icon {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  box-shadow: 0 6px 14px rgba(217,119,6,.25);
}

.quick-card.purple .quick-icon {
  background: linear-gradient(135deg, #7c3aed, #a78bfa);
  box-shadow: 0 6px 14px rgba(124,58,237,.25);
}

.quick-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.quick-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.quick-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

/* Steps */
.steps-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.step-card {
  position: relative;
  padding: 28px 24px 24px;
  background: var(--bg-gray);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  height: 100%;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.step-card .step-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

/* Feature Guide Cards */
.guide-image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
}

.guide-image-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.guide-image-card .guide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(15,23,42,.85));
  display: flex;
  align-items: flex-end;
  padding: 18px 20px;
}

.guide-image-card .guide-overlay h3 {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  margin: 0;
}

.guide-image-card .guide-overlay .tag {
  position: absolute;
  top: 14px;
  left: 14px;
}

/* Content list */
.content-list-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 24px;
  height: 100%;
  box-shadow: var(--shadow-sm);
}

.content-list-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-list-card h3 i {
  color: var(--primary);
  font-size: 16px;
}

.list-group-custom {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-group-custom li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 14px;
}

.list-group-custom li:last-child {
  border-bottom: none;
}

.list-group-custom li a {
  color: var(--text-body);
  flex: 1;
  line-height: 1.5;
}

.list-group-custom li a:hover {
  color: var(--primary);
}

.list-group-custom li .date {
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.list-group-custom li .list-icon {
  color: var(--primary);
  font-size: 12px;
  flex-shrink: 0;
}

/* Stats */
.stats-row {
  background: linear-gradient(135deg, var(--primary), #1e429f);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  color: #fff;
}

.stats-row .stat-item {
  text-align: center;
  padding: 10px;
}

.stats-row .stat-item .stat-num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
}

.stats-row .stat-item .stat-label {
  font-size: 14px;
  color: rgba(255,255,255,.8);
  margin-top: 4px;
}

/* Device Grid */
.device-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  transition: var(--transition-base);
}

.device-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.device-card i {
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 8px;
  display: block;
}

.device-card span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
}

/* FAQ */
.faq-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  margin-bottom: 14px;
  transition: var(--transition-base);
}

.faq-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: #cbd5e1;
}

.faq-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.faq-card h3 i {
  color: var(--primary);
  font-size: 14px;
  margin-top: 5px;
}

.faq-card p {
  font-size: 14px;
  color: var(--text-muted);
  padding-left: 24px;
  margin: 0;
}

/* CTA */
.cta-section {
  background: linear-gradient(120deg, var(--primary), #1e429f);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before,
.cta-section::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
}

.cta-section::before {
  width: 200px;
  height: 200px;
  top: -60px;
  right: -40px;
}

.cta-section::after {
  width: 120px;
  height: 120px;
  bottom: -40px;
  left: -20px;
}

.cta-section h2 {
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255,255,255,.88);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto 26px;
}

.cta-section .btn-light-custom {
  background: #fff;
  color: var(--primary);
  border: none;
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,.12);
  transition: var(--transition-base);
}

.cta-section .btn-light-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0,0,0,.18);
}

.cta-section .btn-outline-light-custom {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.6);
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 12px;
  transition: var(--transition-base);
}

.cta-section .btn-outline-light-custom:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 64px 0 0;
  font-size: 14px;
  margin-top: 72px;
}

.site-footer .brand-logo span:last-child {
  color: #fff;
}

.site-footer .brand-logo .logo-icon {
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-about p {
  margin-top: 16px;
  line-height: 1.8;
  font-size: 13.5px;
  color: #94a3b8;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.footer-social a {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  color: #94a3b8;
  font-size: 14px;
  transition: var(--transition-base);
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #94a3b8;
  font-size: 14px;
}

.footer-col ul li a:hover {
  color: #fff;
  padding-left: 3px;
}

.footer-col ul li i {
  width: 20px;
  color: #60a5fa;
  margin-right: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #64748b;
}

/* Responsive */
@media (max-width: 1024px) {
  :root {
    --spacing-section: 56px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .header-search {
    order: 3;
    max-width: 100%;
    flex-basis: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 48px;
  }
  .header-top {
    flex-wrap: wrap;
    gap: 12px;
  }
  .header-actions {
    margin-left: auto;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    display: none;
    border-top: 1px solid var(--border-color);
  }
  .main-nav.open {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    padding: 10px 0;
  }
  .nav-list li a {
    display: flex;
    width: 100%;
    padding: 13px 16px;
    border-radius: 8px;
  }
  .nav-list li a.active::after {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .page-hero {
    padding: 52px 0;
  }
  .page-hero h1 {
    font-size: 27px;
  }
  .section-title {
    font-size: 24px;
  }
  .stats-row {
    padding: 28px 20px;
  }
  .stats-row .stat-item .stat-num {
    font-size: 26px;
  }
  .cta-section {
    padding: 36px 22px;
  }
  .cta-section .btn-outline-light-custom {
    margin-left: 0;
    margin-top: 12px;
  }
  .grid-gap-mobile {
    --bs-gutter-y: 1rem;
  }
}

@media (max-width: 520px) {
  .brand-logo span:last-child {
    font-size: 16px;
  }
  .brand-logo .logo-icon {
    width: 34px;
    height: 34px;
  }
  .btn-primary {
    padding: 8px 16px;
    font-size: 13px;
  }
  .header-actions {
    gap: 8px;
  }
  .page-hero h1 {
    font-size: 23px;
  }
  .page-hero p {
    font-size: 14px;
  }
  .section-title {
    font-size: 21px;
  }
  .section-block {
    padding: 40px 0;
  }
  .step-card {
    padding: 20px 16px;
  }
  .cta-section h2 {
    font-size: 22px;
  }
}

/* Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Utility */
.text-primary-custom {
  color: var(--primary) !important;
}

.bg-light-custom {
  background: var(--bg-gray) !important;
}

.mt-n1 {
  margin-top: -4px;
}