/* roulang page: index */
:root{
  --primary:#0f1e2e;
  --primary-light:#16283a;
  --primary-soft:#1e3348;
  --accent:#c9a55a;
  --accent-light:#ddbc7a;
  --accent-dark:#a68645;
  --bg:#f5f7fa;
  --bg-alt:#edf1f6;
  --card:#ffffff;
  --text:#182230;
  --text-soft:#5c6b7c;
  --border:#e2e8ef;
  --shadow-sm:0 2px 12px rgba(10,20,40,.05);
  --shadow-md:0 10px 34px rgba(10,20,40,.09);
  --shadow-lg:0 18px 50px rgba(10,20,40,.13);
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --transition:.3s cubic-bezier(.4,0,.2,1);
  --container:1260px;
  --font:system-ui,-apple-system,"Segoe UI","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input{font-family:inherit;font-size:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
::selection{background:var(--accent);color:#fff}

/* Header 双层导航 */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);
}
.header-top{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 0;gap:20px;
}
.logo{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:800;letter-spacing:-.5px;color:var(--primary);white-space:nowrap}
.logo .logo-emblem{
  width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:20px;font-weight:900;
  box-shadow:0 4px 14px rgba(15,30,46,.25);flex-shrink:0;
}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);
  border-radius:50px;padding:6px 6px 6px 14px;width:260px;transition:var(--transition);
}
.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(201,165,90,.15);background:#fff}
.search-box input{border:none;outline:none;background:transparent;width:100%;font-size:14px;color:var(--text)}
.search-box button{
  background:var(--primary);color:#fff;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;
  font-size:14px;flex-shrink:0;transition:var(--transition);
}
.search-box button:hover{background:var(--accent)}
.btn-cta{
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-weight:600;
  padding:9px 20px;border-radius:50px;font-size:14px;white-space:nowrap;box-shadow:0 4px 16px rgba(201,165,90,.3);
  transition:var(--transition);
}
.btn-cta:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(201,165,90,.4)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:8px;background:var(--bg);align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.main-nav{
  border-top:1px solid var(--border);background:#fff;
}
.nav-tabs{
  display:flex;gap:6px;overflow-x:auto;padding:8px 0;scrollbar-width:thin;scrollbar-color:var(--border) transparent;
}
.nav-tabs::-webkit-scrollbar{height:4px}
.nav-tabs::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
.nav-tabs a{
  display:flex;align-items:center;gap:6px;padding:8px 18px;border-radius:50px;font-size:15px;font-weight:600;color:var(--text-soft);white-space:nowrap;
  transition:var(--transition);
}
.nav-tabs a:hover{color:var(--primary);background:var(--bg)}
.nav-tabs a.active{background:var(--primary);color:#fff;box-shadow:0 4px 16px rgba(15,30,46,.22)}
.nav-tabs a .nav-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;transition:var(--transition)}
.nav-tabs a.active .nav-dot{opacity:1}

/* Hero */
.hero{
  position:relative;min-height:640px;display:flex;align-items:center;overflow:hidden;
  background:linear-gradient(115deg,rgba(10,24,40,.92) 0%,rgba(15,30,46,.72) 45%,rgba(15,30,46,.45) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:90px 0;
}
.hero-content{max-width:680px;position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  padding:6px 16px;border-radius:50px;color:#fff;font-size:13px;font-weight:500;backdrop-filter:blur(6px);margin-bottom:22px;
}
.hero-badge .badge-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(201,165,90,.8)}
.hero h1{
  font-size:52px;line-height:1.2;font-weight:800;color:#fff;letter-spacing:-1px;margin-bottom:18px;
}
.hero h1 span{color:var(--accent)}
.hero-desc{font-size:17px;color:rgba(255,255,255,.78);margin-bottom:30px;max-width:540px;line-height:1.8}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;font-size:15px;font-weight:700;
  padding:13px 28px;border-radius:50px;box-shadow:0 6px 22px rgba(201,165,90,.35);transition:var(--transition);
}
.btn-main:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 12px 30px rgba(201,165,90,.4)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.45);color:#fff;font-size:15px;font-weight:600;
  padding:13px 26px;border-radius:50px;background:rgba(255,255,255,.08);backdrop-filter:blur(6px);transition:var(--transition);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.7)}
.hero-metrics{
  display:flex;gap:32px;margin-top:46px;padding-top:30px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-metrics .metric{color:#fff}
.hero-metrics .metric strong{font-size:28px;font-weight:800;display:block;line-height:1.2}
.hero-metrics .metric span{font-size:13px;color:rgba(255,255,255,.65)}

/* Section 通用 */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:680px;margin:0 auto 48px}
.section-head .section-tag{
  display:inline-block;background:rgba(201,165,90,.12);color:var(--accent-dark);font-size:13px;font-weight:700;
  padding:4px 14px;border-radius:50px;margin-bottom:14px;letter-spacing:1px;
}
.section-head h2{font-size:34px;font-weight:800;color:var(--primary);letter-spacing:-.5px;line-height:1.3;margin-bottom:10px}
.section-head p{color:var(--text-soft);font-size:16px}

/* 统计 */
.stats-section{padding:52px 0;background:var(--primary)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat-item{
  text-align:center;color:#fff;padding:20px 16px;border-radius:var(--radius);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);transition:var(--transition);
}
.stat-item:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.stat-item .num{
  font-size:38px;font-weight:800;color:var(--accent);line-height:1.2;
}
.stat-item .label{font-size:14px;color:rgba(255,255,255,.7);margin-top:6px}

/* 关于 */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-img{
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative;
}
.about-img img{width:100%;height:420px;object-fit:cover;transition:transform .6s ease}
.about-img:hover img{transform:scale(1.03)}
.about-img::after{
  content:'';position:absolute;inset:0;border-radius:var(--radius-lg);box-shadow:inset 0 0 80px rgba(0,0,0,.12);
}
.about-content h2{font-size:32px;font-weight:800;color:var(--primary);margin-bottom:18px;line-height:1.3}
.about-content p{color:var(--text-soft);font-size:16px;line-height:1.9;margin-bottom:16px}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.about-feature{
  display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:12px 14px;font-size:14px;font-weight:600;color:var(--text);transition:var(--transition);
}
.about-feature:hover{border-color:var(--accent);box-shadow:var(--shadow-sm)}
.about-feature i{
  color:var(--accent);font-size:16px;
}

/* 特色卡片 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:var(--transition);display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card-img{height:200px;overflow:hidden;position:relative}
.feature-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.feature-card:hover .feature-card-img img{transform:scale(1.06)}
.feature-card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(10,20,40,.4))}
.feature-card-body{padding:24px 24px 28px;flex:1;display:flex;flex-direction:column}
.feature-card-body h3{font-size:19px;font-weight:700;color:var(--primary);margin-bottom:8px}
.feature-card-body p{color:var(--text-soft);font-size:14px;line-height:1.75;flex:1}
.feature-card-footer{margin-top:16px;display:flex;align-items:center;justify-content:space-between}

/* 分类入口 */
.category-banner{
  border-radius:var(--radius-lg);overflow:hidden;position:relative;min-height:300px;display:flex;align-items:center;
  background:linear-gradient(100deg,rgba(15,30,46,.94) 40%,rgba(15,30,46,.55)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:48px 56px;color:#fff;
}
.category-banner::before{
  content:'';position:absolute;right:60px;top:-30px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,165,90,.25),transparent 70%);pointer-events:none;
}
.category-info{max-width:560px;position:relative;z-index:2}
.category-info .cat-label{
  display:inline-flex;align-items:center;gap:8px;background:rgba(201,165,90,.18);border:1px solid rgba(201,165,90,.4);
  font-size:13px;font-weight:600;padding:4px 14px;border-radius:50px;color:var(--accent-light);margin-bottom:16px;
}
.category-info h2{font-size:30px;font-weight:800;margin-bottom:12px;line-height:1.3}
.category-info p{color:rgba(255,255,255,.72);line-height:1.8;margin-bottom:24px;font-size:15px}
.category-btn{
  display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;font-weight:700;
  padding:11px 24px;border-radius:50px;font-size:14px;transition:var(--transition);box-shadow:0 4px 18px rgba(201,165,90,.3);
}
.category-btn:hover{background:var(--accent-light);transform:translateY(-2px)}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:var(--transition);display:flex;flex-direction:column;
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:transparent}
.news-card-top{display:flex;align-items:center;gap:10px;padding:20px 24px 12px}
.news-card-top .badge{
  background:rgba(201,165,90,.14);color:var(--accent-dark);font-size:12px;font-weight:700;padding:3px 12px;border-radius:50px;
}
.news-card-top .time{font-size:12px;color:var(--text-soft)}
.news-card-body{padding:0 24px 20px;flex:1}
.news-card-body h3{font-size:17px;font-weight:700;line-height:1.55;margin-bottom:8px;color:var(--text);transition:var(--transition)}
.news-card:hover .news-card-body h3{color:var(--accent-dark)}
.news-card-body p{
  font-size:13px;color:var(--text-soft);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card-foot{padding:14px 24px 20px;border-top:1px solid var(--border);display:flex;align-items:center}
.news-card-foot .read-more{font-size:13px;font-weight:600;color:var(--primary);display:flex;align-items:center;gap:6px;transition:var(--transition)}
.news-card-foot .read-more:hover{color:var(--accent-dark);gap:10px}
.news-empty{
  text-align:center;padding:60px 20px;background:var(--card);border-radius:var(--radius-lg);border:1px dashed var(--border);
  color:var(--text-soft);font-size:15px;grid-column:1/-1;
}

/* 服务流程 */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:process}
.process-step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;
  text-align:center;position:relative;transition:var(--transition);counter-increment:process;
}
.process-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.process-step .step-num{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));
  color:var(--accent);font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 22px rgba(15,30,46,.24);position:relative;
}
.process-step .step-num::after{
  content:'';position:absolute;width:6px;height:6px;border-radius:50%;background:var(--accent);right:-4px;top:8px;
  box-shadow:0 0 8px rgba(201,165,90,.8);
}
.process-step h3{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:8px}
.process-step p{font-size:13px;color:var(--text-soft);line-height:1.7}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;
  overflow:hidden;transition:var(--transition);
}
.faq-item:hover{border-color:var(--accent)}
.faq-item.active{box-shadow:var(--shadow-sm);border-color:var(--accent)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;gap:16px;
}
.faq-q .question{font-size:15px;font-weight:600;color:var(--text);flex:1}
.faq-q .faq-icon{
  width:28px;height:28px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--text-soft);transition:var(--transition);flex-shrink:0;
}
.faq-item.active .faq-q .faq-icon{background:var(--accent);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 22px}
.faq-item.active .faq-a{max-height:240px;padding:0 22px 18px}
.faq-a p{color:var(--text-soft);font-size:14px;line-height:1.8}

/* CTA */
.cta-section{
  position:relative;padding:90px 0;overflow:hidden;
  background:linear-gradient(110deg,rgba(10,20,40,.95),rgba(20,40,60,.82)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}
.cta-inner{text-align:center;max-width:620px;margin:0 auto;color:#fff}
.cta-inner h2{font-size:36px;font-weight:800;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.75);font-size:16px;line-height:1.8;margin-bottom:28px}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--primary);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:44px}
.footer-brand .logo{color:#fff;font-size:22px}
.footer-brand .logo .logo-emblem{background:rgba(255,255,255,.1);color:var(--accent)}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;color:rgba(255,255,255,.55);max-width:320px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:16px}
.footer-col .footer-links li{margin-bottom:10px}
.footer-col .footer-links a{font-size:14px;color:rgba(255,255,255,.6);transition:var(--transition)}
.footer-col .footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-copyright{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.4);
}

/* 响应式 */
@media (max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .hero h1{font-size:42px}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .about-img img{height:320px}
}
@media (max-width:900px){
  .header-top .search-box{display:none}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head h2{font-size:28px}
  .hero{min-height:520px;padding:64px 0}
  .hero h1{font-size:32px}
  .hero-desc{font-size:15px}
  .hero-metrics{flex-wrap:wrap;gap:20px}
  .hero-metrics .metric strong{font-size:22px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .feature-grid{grid-template-columns:1fr;gap:18px}
  .news-grid{grid-template-columns:1fr;gap:18px}
  .process-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .category-banner{padding:36px 28px;min-height:280px}
  .category-banner h2{font-size:24px}
  .nav-tabs a{padding:7px 14px;font-size:14px}
  .btn-main,.btn-ghost{padding:11px 20px;font-size:14px}
  .cta-inner h2{font-size:28px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .header-top{gap:10px}
  .logo{font-size:19px}
  .logo .logo-emblem{width:32px;height:32px;font-size:16px}
  .btn-cta{padding:7px 14px;font-size:13px}
  .hero{padding:50px 0}
  .hero h1{font-size:27px}
  .hero-desc{font-size:14px}
  .hero-btns{flex-direction:column;width:100%}
  .btn-main,.btn-ghost{width:100%;justify-content:center}
  .hero-metrics{gap:12px;flex-direction:column}
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-item .num{font-size:30px}
  .section-head h2{font-size:24px}
  .section-head p{font-size:14px}
  .about-content h2{font-size:24px}
  .about-features{grid-template-columns:1fr}
  .feature-card-img{height:170px}
  .about-img img{height:240px}
  .category-banner{padding:28px 20px}
  .category-banner h2{font-size:20px}
  .process-step{padding:24px 18px}
  .faq-q{padding:14px 16px}
  .faq-a{padding:0 16px}
  .faq-item.active .faq-a{padding:0 16px 14px}
  .cta-section{padding:60px 0}
  .cta-inner h2{font-size:24px}
  .cta-btns{flex-direction:column}
  .cta-btns .btn-main,.cta-btns .btn-ghost{width:100%;justify-content:center}
}

/* roulang page: article */
:root{
  --primary:#174ea6;
  --primary-dark:#0b2f73;
  --primary-light:#e8f0fe;
  --accent:#f59e0b;
  --accent-light:#fff7e6;
  --bg:#f5f7fb;
  --surface:#ffffff;
  --text:#1e293b;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 20px rgba(23,78,166,.08);
  --shadow-hover:0 12px 32px rgba(23,78,166,.16);
  --transition:.2s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
button,input{font:inherit;border:none;outline:none}
ul{list-style:none;margin:0;padding:0}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;letter-spacing:.3px;color:var(--text)}
.logo:hover{opacity:.9}
.logo-emblem{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.25rem;box-shadow:0 4px 12px rgba(23,78,166,.25)}
.btn-cta,.btn-primary,.btn-light{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:999px;padding:10px 22px;font-size:.95rem;cursor:pointer;transition:all var(--transition);border:2px solid transparent}
.btn-cta{background:var(--accent);color:#fff}
.btn-cta:hover{background:#e08e00;transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,158,11,.35)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(23,78,166,.3)}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,255,255,.2)}
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(15,23,42,.04)}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:20px}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:7px 14px;gap:8px;transition:border-color var(--transition)}
.search-box:focus-within{border-color:var(--primary);background:#fff}
.search-box input{background:transparent;border:none;outline:none;width:180px;font-size:.9rem;color:var(--text)}
.search-box input::placeholder{color:var(--text-weak)}
.search-box button{background:transparent;color:var(--text-weak);cursor:pointer;display:flex;align-items:center;padding:2px;transition:color var(--transition)}
.search-box button:hover{color:var(--primary)}
.nav-toggle{display:none;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:8px 12px;font-size:1.15rem;cursor:pointer;color:var(--text)}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.main-nav{background:var(--primary-dark)}
.main-nav .nav-tabs{display:flex;gap:6px;padding:10px 0;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.main-nav .nav-tabs::-webkit-scrollbar{display:none}
.main-nav .nav-tabs a{display:inline-flex;align-items:center;gap:8px;color:#cbd5e1;font-weight:600;font-size:.95rem;padding:9px 20px;border-radius:999px;white-space:nowrap;transition:all var(--transition)}
.main-nav .nav-tabs a:hover{color:#fff;background:rgba(255,255,255,.1)}
.main-nav .nav-tabs a.active{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.35)}
.nav-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.55;flex:none}
.page-banner{position:relative;background:linear-gradient(120deg,rgba(11,28,51,.94),rgba(23,78,166,.88)),url('/assets/images/backpic/back-1.png') center/cover;padding:62px 0 58px;color:#fff;text-align:center}
.page-banner .banner-inner{position:relative;z-index:2}
.page-banner .banner-label{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:6px 18px;font-size:.85rem;font-weight:600;letter-spacing:1px;margin-bottom:18px;backdrop-filter:blur(4px)}
.page-banner h1{margin:0;font-size:2.1rem;line-height:1.35;font-weight:800;max-width:860px;margin-left:auto;margin-right:auto}
.page-banner p{margin:14px auto 0;max-width:680px;color:rgba(255,255,255,.82);font-size:1.02rem}
.breadcrumb{border-bottom:1px solid var(--border);background:#fff}
.breadcrumb .container{display:flex;align-items:center;gap:10px;font-size:.88rem;color:var(--text-weak);padding-top:12px;padding-bottom:12px}
.breadcrumb a{color:var(--text-weak)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--text);font-weight:600;max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;padding:34px 0 60px}
.article-main{min-width:0}
.article-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:38px 40px}
.article-title{margin:0 0 18px;font-size:2rem;line-height:1.4;font-weight:800;color:var(--text)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;padding-bottom:20px;border-bottom:1px solid var(--border);margin-bottom:24px}
.badge{display:inline-flex;align-items:center;background:var(--primary-light);color:var(--primary);border-radius:999px;padding:4px 14px;font-size:.82rem;font-weight:700}
.badge.badge-accent{background:var(--accent-light);color:#b45309}
.meta-date{color:var(--text-weak);font-size:.88rem;display:inline-flex;align-items:center;gap:6px}
.meta-date svg{opacity:.6}
.article-body{font-size:1.02rem;line-height:1.9;color:var(--text)}
.article-body p{margin:0 0 1.3em}
.article-body h2{margin:2em 0 .8em;font-size:1.45rem;color:var(--primary-dark);font-weight:800;line-height:1.4;padding-left:16px;border-left:4px solid var(--primary);border-radius:0 6px 6px 0}
.article-body h3{margin:1.8em 0 .7em;font-size:1.2rem;color:var(--text);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em}
.article-body ul li,.article-body ol li{margin-bottom:.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body blockquote{margin:1.6em 0;padding:16px 20px;background:var(--primary-light);border-radius:var(--radius-sm);border-left:4px solid var(--primary);color:var(--primary-dark);font-weight:500}
.article-body img{border-radius:var(--radius);box-shadow:var(--shadow);margin:1.4em auto;height:auto}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-dark)}
.article-footer{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:30px;padding-top:22px;border-top:1px solid var(--border)}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.article-tags span{font-size:.82rem;color:var(--text-weak);font-weight:600;margin-right:2px}
.tag-item{background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:4px 14px;font-size:.82rem;color:var(--text-weak);transition:all var(--transition)}
.tag-item:hover{border-color:var(--primary);color:var(--primary)}
.article-empty{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:70px 40px;text-align:center}
.article-empty .empty-icon{width:74px;height:74px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;margin:0 auto 24px;font-size:1.7rem;font-weight:800}
.article-empty h1{margin:0 0 12px;font-size:1.8rem;font-weight:800;color:var(--text)}
.article-empty p{margin:0 0 26px;color:var(--text-weak);max-width:440px;margin-left:auto;margin-right:auto}
.article-side{display:flex;flex-direction:column;gap:20px;min-width:0}
.side-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 24px;border:1px solid rgba(226,232,240,.5)}
.side-card h3{margin:0 0 16px;font-size:1.05rem;font-weight:800;color:var(--text);display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:4px;background:var(--primary)}
.side-link{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-radius:var(--radius-sm);background:var(--bg);margin-bottom:9px;font-weight:600;font-size:.92rem;transition:all var(--transition)}
.side-link:hover{background:var(--primary-light);color:var(--primary);transform:translateX(4px)}
.side-link span{color:var(--text-weak);font-size:.82rem}
.side-stat{display:flex;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px dashed var(--border);font-size:.92rem}
.side-stat:last-child{border-bottom:none}
.side-stat strong{color:var(--text)}
.side-stat span{color:var(--text-weak)}
.side-contact p{margin:0 0 18px;color:var(--text-weak);font-size:.92rem;line-height:1.7}
.feature-strip{padding:64px 0;background:#fff;border-top:1px solid var(--border)}
.section-head{text-align:center;max-width:680px;margin:0 auto 42px}
.section-tag{display:inline-block;background:var(--primary-light);color:var(--primary);border-radius:999px;padding:5px 16px;font-size:.82rem;font-weight:700;letter-spacing:1px;margin-bottom:14px}
.section-head h2{margin:0 0 12px;font-size:1.8rem;font-weight:800;color:var(--text);line-height:1.4}
.section-head p{margin:0;color:var(--text-weak);font-size:1rem}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;transition:all var(--transition)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.feature-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:1.3rem;font-weight:800}
.feature-card h3{margin:0 0 8px;font-size:1.05rem;font-weight:800;color:var(--text)}
.feature-card p{margin:0;font-size:.9rem;color:var(--text-weak);line-height:1.7}
.cta-section{padding:72px 0;background:linear-gradient(120deg,rgba(11,28,51,.96),rgba(23,78,166,.92)),url('/assets/images/backpic/back-2.png') center/cover;color:#fff;text-align:center}
.cta-section h2{margin:0 0 14px;font-size:2rem;font-weight:800}
.cta-section p{margin:0 auto 30px;max-width:620px;color:rgba(255,255,255,.85);font-size:1.05rem}
.cta-section .btn-light{margin:0 6px}
.cta-section .btn-outline{display:inline-flex;align-items:center;gap:8px;border:2px solid rgba(255,255,255,.7);color:#fff;border-radius:999px;padding:10px 22px;font-weight:600;transition:all var(--transition)}
.cta-section .btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff}
.site-footer{background:#0b1c33;color:#94a3b8;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-bottom:38px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:.92rem;line-height:1.8;max-width:360px;margin:0}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin:6px 0 18px;letter-spacing:.5px}
.footer-links li{margin-bottom:11px}
.footer-links a{color:#94a3b8;font-size:.92rem;transition:all var(--transition)}
.footer-links a:hover{color:#fff;padding-left:5px}
.footer-copyright{position:relative;border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:.85rem;color:#64748b}
.footer-copyright a{color:#94a3b8}
.footer-copyright a:hover{color:#fff}
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr}
  .article-side{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .header-top{padding:12px 0}
  .search-box{display:none}
  .nav-toggle{display:inline-flex;align-items:center}
  .main-nav{position:absolute;top:100%;left:0;right:0;background:var(--primary-dark);display:none;box-shadow:0 16px 30px rgba(15,23,42,.2);z-index:99}
  .main-nav.nav-open{display:block}
  .main-nav .nav-tabs{flex-direction:column;align-items:stretch;padding:14px;gap:4px;overflow:visible}
  .main-nav .nav-tabs a{justify-content:flex-start;border-radius:10px}
  .page-banner{padding:46px 0 42px}
  .page-banner h1{font-size:1.6rem}
  .article-card{padding:26px 24px}
  .article-title{font-size:1.55rem}
  .article-body{font-size:.98rem}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .cta-section{padding:54px 0}
  .cta-section h2{font-size:1.6rem}
  .footer-grid{grid-template-columns:1fr;gap:34px}
}
@media (max-width:520px){
  .container{padding:0 14px}
  .header-actions{gap:8px}
  .btn-cta{padding:9px 16px;font-size:.85rem}
  .page-banner h1{font-size:1.35rem}
  .page-banner .banner-label{font-size:.78rem;padding:5px 14px}
  .breadcrumb .current{max-width:220px}
  .article-card{padding:22px 16px;border-radius:12px}
  .article-title{font-size:1.32rem}
  .article-meta{gap:8px;font-size:.82rem}
  .article-body font-size:.95rem}
  .article-footer{flex-direction:column;align-items:flex-start}
  .article-side{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .feature-card{padding:22px 18px}
  .section-head h2{font-size:1.45rem}
  .cta-section{padding:46px 0}
  .cta-section h2{font-size:1.4rem}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f1b2d;
  --primary-light: #17304f;
  --accent: #c9a44c;
  --accent-dark: #b08d3a;
  --accent-soft: #f7f0df;
  --bg-body: #f4f6fa;
  --bg-white: #ffffff;
  --bg-dark: #0b1220;
  --text-dark: #172033;
  --text-mid: #4e5a6d;
  --text-light: #8894a8;
  --border: #e2e7ef;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 27, 45, .06);
  --shadow-md: 0 10px 30px rgba(15, 27, 45, .08);
  --shadow-lg: 0 20px 50px rgba(15, 27, 45, .12);
  --space-lg: 104px;
  --space-md: 72px;
  --space-sm: 48px;
}

/* ===== Reset / Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: var(--accent-dark);
}
button {
  font-family: inherit;
  cursor: pointer;
}
ul, ol {
  list-style: none;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.main-nav .container {
  padding: 0 24px;
}

/* ===== Header 双层导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15, 27, 45, .04);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  text-decoration: none;
}
.logo:hover {
  color: var(--text-dark);
}
.logo-emblem {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 6px 6px 16px;
  width: 240px;
  transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(201, 164, 76, .15);
}
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  flex: 1;
  font-size: 14px;
  color: var(--text-dark);
  min-width: 0;
}
.search-box input::placeholder {
  color: var(--text-light);
}
.search-box button {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  transition: background .2s;
}
.search-box button:hover {
  background: var(--accent);
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #172033;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 18px;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(176, 141, 58, .25);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-white);
  font-size: 18px;
  color: var(--text-dark);
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.nav-toggle:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.main-nav {
  border-top: 1px solid var(--border);
  background: var(--bg-white);
}
.nav-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.nav-tabs::-webkit-scrollbar {
  display: none;
}
.nav-tabs a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-mid);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s;
}
.nav-tabs a:hover {
  color: var(--primary);
}
.nav-tabs a.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-tabs a.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--accent);
}
.nav-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border);
  transition: background .2s;
}
.nav-tabs a.active .nav-dot,
.nav-tabs a:hover .nav-dot {
  background: var(--accent);
}

/* ===== 分类页 Banner ===== */
.page-hero {
  position: relative;
  padding: 88px 0 96px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  text-align: center;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 27, 45, .88), rgba(15, 27, 45, .68));
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 22px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, .1);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.breadcrumb a {
  color: rgba(255, 255, 255, .85);
  text-decoration: none;
  transition: color .2s;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb span {
  line-height: 1;
}
.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 18px;
  letter-spacing: 1px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .2);
}
.page-hero .hero-sub {
  max-width: 720px;
  margin: 0 auto 34px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .88);
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background .25s, color .25s, transform .25s, box-shadow .25s, border-color .25s;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #172033;
}
.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(176, 141, 58, .3);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, .6);
  color: #fff;
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, .12);
  color: #fff;
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-dark);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-body);
}

/* ===== 通用板块 ===== */
.section {
  padding: var(--space-md) 0;
}
.section-alt {
  background: var(--bg-white);
}
.section-dark {
  background: var(--bg-dark);
  color: #fff;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-dark .section-tag {
  background: rgba(201, 164, 76, .15);
  color: var(--accent);
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-dark);
  margin: 0 0 12px;
}
.section-dark .section-title {
  color: #fff;
}
.section-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-mid);
}
.section-dark .section-sub {
  color: rgba(255, 255, 255, .72);
}

/* ===== 平台概览图文 ===== */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.overview-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.overview-media img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  transition: transform .5s ease;
}
.overview-media:hover img {
  transform: scale(1.03);
}
.overview-content .overview-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 16px;
  color: var(--text-dark);
}
.overview-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mid);
  margin: 0 0 18px;
}
.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  transition: border-color .2s, background .2s;
}
.feature-item:hover {
  border-color: rgba(201, 164, 76, .4);
  background: var(--accent-soft);
}
.feature-item .fi-icon {
  color: var(--accent);
  font-size: 16px;
}

/* ===== 统计卡片 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}
.stat-card {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(201, 164, 76, .35);
}
.stat-card .stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.stat-card .stat-label {
  font-size: 14px;
  color: var(--text-mid);
  margin-top: 6px;
}

/* ===== 功能矩阵 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(201, 164, 76, .45);
}
.feature-card .fc-icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  margin-bottom: 20px;
  transition: transform .25s;
}
.feature-card:hover .fc-icon {
  transform: scale(1.08) rotate(-4deg);
}
.feature-card:nth-child(even) .fc-icon {
  background: var(--accent);
  color: #172033;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--text-dark);
}
.feature-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mid);
  margin: 0;
}

/* ===== 使用流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 28px;
  transition: transform .25s, box-shadow .25s;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step-num {
  font-size: 42px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 2px var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--text-dark);
}
.step-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mid);
  margin: 0;
}

/* ===== 资讯卡片 ===== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.article-media {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--primary);
}
.article-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.article-card:hover .article-media img {
  transform: scale(1.05);
}
.article-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(15, 27, 45, .8);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.article-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}
.article-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 10px;
  color: var(--text-dark);
}
.article-body h3 a {
  color: inherit;
  text-decoration: none;
  transition: color .2s;
}
.article-body h3 a:hover {
  color: var(--accent-dark);
}
.article-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mid);
  margin: 0 0 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-light);
  margin-top: auto;
}
.article-meta i {
  margin-right: 4px;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: border-color .2s, box-shadow .2s;
}
.faq-item:hover {
  border-color: rgba(201, 164, 76, .4);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  padding-right: 32px;
  position: relative;
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent-dark);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 500;
  transition: transform .25s, background .25s;
}
.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  background: var(--accent);
  color: #fff;
}
.faq-item .faq-a {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-mid);
}

/* ===== CTA ===== */
.cta-section {
  padding: var(--space-md) 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(120deg, rgba(15, 27, 45, .92), rgba(15, 27, 45, .76));
}
.cta-card {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  color: #fff;
}
.cta-card h2 {
  font-size: 32px;
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.3;
}
.cta-card p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
  margin: 0 0 32px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, .7);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .logo .logo-emblem {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #172033;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .55);
  margin: 0;
  max-width: 380px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 16px;
}
.footer-links {
  padding: 0;
  margin: 0;
}
.footer-links li + li {
  margin-top: 10px;
}
.footer-links a {
  color: rgba(255, 255, 255, .6);
  text-decoration: none;
  font-size: 14px;
  transition: color .2s;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-copyright {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .overview-grid {
    grid-template-columns: 1fr;
  }
  .overview-media img {
    min-height: 260px;
  }
}
@media (max-width: 768px) {
  :root {
    --space-md: 56px;
    --space-sm: 36px;
  }
  .header-top {
    height: 64px;
  }
  .search-box {
    display: none;
  }
  .btn-cta {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-actions.show-mobile {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 12px 20px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: flex;
    gap: 10px;
    z-index: 99;
  }
  .header-actions.show-mobile .search-box {
    display: flex;
    flex: 1;
    width: auto;
  }
  .header-actions.show-mobile .btn-cta {
    display: inline-flex;
    white-space: nowrap;
  }
  .nav-tabs {
    flex-wrap: nowrap;
  }
  .nav-tabs a {
    padding: 13px 14px;
    font-size: 14px;
  }
  .page-hero {
    padding: 64px 0 72px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero .hero-sub {
    font-size: 15px;
  }
  .section-title {
    font-size: 26px;
  }
  .cta-card h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .main-nav .container {
    padding: 0 16px;
  }
  .feature-grid,
  .steps-grid,
  .article-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .overview-content .overview-title {
    font-size: 22px;
  }
  .hero-buttons .btn,
  .cta-buttons .btn {
    width: 100%;
  }
  .breadcrumb {
    font-size: 12px;
    padding: 6px 12px;
  }
  .faq-item {
    padding: 18px 20px;
  }
  .faq-item summary {
    font-size: 15px;
  }
}