/* roulang page: index */
:root{
  --primary:#2F6FA8;
  --primary-dark:#1E4E78;
  --primary-light:#EAF1F8;
  --accent:#ED8936;
  --accent-dark:#D97724;
  --bg:#F7F9FC;
  --card-bg:#FFFFFF;
  --text:#1F2B38;
  --text-secondary:#617183;
  --border:#E3E9F0;
  --success:#268553;
  --warning:#C05621;
  --error:#C53030;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-sm:8px;
  --shadow-sm:0 2px 10px rgba(30,64,100,.06);
  --shadow-lg:0 14px 30px rgba(30,64,100,.10);
  --accent-shadow:0 10px 20px rgba(230,120,40,.25);
  --container-width:1200px;
  --font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font-family:inherit;font-size:inherit}
.container{max-width:var(--container-width);margin:0 auto;padding:0 24px}
@media (max-width:520px){.container{padding:0 16px}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius-md);padding:12px 28px;font-size:15px;font-weight:600;cursor:pointer;transition:all .25s ease;line-height:1.4}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--accent-shadow)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(47,111,168,.2)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--border)}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-light);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn:focus-visible,.nav-link:focus-visible,.logo:focus-visible{outline:3px solid rgba(47,111,168,.35);outline-offset:2px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);box-shadow:0 1px 6px rgba(30,64,100,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:32px;height:32px;border-radius:9px;background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.logo-icon svg{width:18px;height:18px}
.logo-text{font-size:20px;font-weight:800;color:var(--primary-dark);letter-spacing:.5px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 20px}
.nav-link{font-size:15px;color:var(--text-secondary);font-weight:500;padding:6px 2px;position:relative;transition:color .2s;white-space:nowrap}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{content:'';position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--primary);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.search-box{position:relative;width:200px}
.search-box input{width:100%;height:38px;border:1px solid transparent;background:#F0F3F7;border-radius:var(--radius-md);padding:0 38px 0 14px;font-size:13px;color:var(--text);transition:all .25s}
.search-box input::placeholder{color:#9AA8B7}
.search-box input:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,111,168,.15)}
.search-btn{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:8px}
.search-btn:hover{color:var(--primary);background:var(--primary-light)}
.header-link{font-size:14px;color:var(--text-secondary);font-weight:500;transition:color .2s}
.header-link:hover{color:var(--primary)}
.header-cta{padding:10px 22px;font-size:14px}
.menu-toggle{display:none;width:40px;height:40px;border:none;background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:8px}
.menu-toggle:hover{background:var(--primary-light)}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动端抽屉 */
.mobile-menu{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(31,43,56,.5);z-index:200;opacity:0;pointer-events:none;transition:opacity .3s}
.mobile-menu.open{opacity:1;pointer-events:auto}
.mobile-menu-panel{position:absolute;top:0;right:0;bottom:0;width:280px;background:#fff;padding:80px 24px 32px;overflow-y:auto;transform:translateX(100%);transition:transform .35s ease}
.mobile-menu.open .mobile-menu-panel{transform:translateX(0)}
.mobile-menu-close{position:absolute;top:20px;right:20px;width:36px;height:36px;border:none;background:var(--primary-light);border-radius:50%;font-size:18px;color:var(--primary);cursor:pointer}
.mobile-nav-link{display:block;padding:12px 8px;font-size:16px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border);transition:all .2s}
.mobile-nav-link:hover{color:var(--primary);padding-left:14px}
.mobile-nav-link.active{color:var(--primary)}
.mobile-cta{margin-top:24px;display:block;text-align:center}
.mobile-search{display:flex;gap:8px;margin-bottom:20px;margin-top:8px}
.mobile-search input{flex:1;height:42px;border:1px solid var(--border);border-radius:var(--radius-md);padding:0 14px;font-size:14px}
.mobile-search button{width:42px;height:42px;border:none;background:var(--primary);border-radius:var(--radius-md);color:#fff;cursor:pointer}

/* Hero */
.hero{position:relative;background:linear-gradient(135deg,#F0F6FC 0%,#F7F9FC 60%,#EAF1F8 100%);padding:72px 0 88px;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(47,111,168,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(47,111,168,.05) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero-inner{display:flex;align-items:center;gap:60px;position:relative;z-index:1}
.hero-content{flex:1;max-width:580px}
.hero-content h1{font-size:46px;line-height:1.25;font-weight:800;color:var(--text);margin-bottom:20px}
.hero-content h1 .highlight{color:var(--primary)}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-secondary);margin-bottom:36px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{flex:1;max-width:520px;position:relative}
.hero-visual .deco-block{position:absolute;bottom:-16px;right:-16px;width:85%;height:85%;background:var(--primary-light);border-radius:var(--radius-lg);z-index:0}
.hero-visual .deco-block.accent{background:rgba(237,137,54,.15);top:-10px;left:-10px;bottom:auto;right:auto;width:60%;height:60%}
.hero-img-wrap{position:relative;z-index:1;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.hero-img-wrap img{width:100%;height:380px;object-fit:cover}
.hero-img-wrap::after{content:'';position:absolute;inset:0;background:linear-gradient(to bottom,transparent 70%,rgba(30,78,120,.15));border-radius:var(--radius-lg)}
.hero-badge{position:absolute;z-index:2;top:20px;left:20px;background:rgba(255,255,255,.92);backdrop-filter:blur(6px);padding:8px 16px;border-radius:999px;font-size:13px;color:var(--primary);font-weight:600;box-shadow:var(--shadow-sm)}

/* 区块 */
.section{padding:96px 0}
.section-alt{background:#EAF1F8}
.section-header{text-align:center;max-width:720px;margin:0 auto 56px}
.section-header h2{font-size:34px;font-weight:700;color:var(--text);line-height:1.3;margin-bottom:12px}
.section-header p{font-size:16px;color:var(--text-secondary)}

/* 卖点 */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-sm);transition:all .3s ease}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.feature-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-icon svg{width:24px;height:24px}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.feature-card p{font-size:14px;line-height:1.7;color:var(--text-secondary)}

/* 解决方案 */
.solution-section{background:#fff}
.solution-item{display:flex;align-items:center;gap:60px;margin-bottom:80px}
.solution-item:last-child{margin-bottom:0}
.solution-item.reverse{flex-direction:row-reverse}
.solution-media{flex:1;position:relative}
.solution-media .img-card{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.solution-media img{width:100%;height:320px;object-fit:cover}
.solution-media .img-tag{position:absolute;bottom:16px;left:16px;background:rgba(255,255,255,.94);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--primary);box-shadow:var(--shadow-sm)}
.solution-content{flex:1}
.solution-content h3{font-size:26px;font-weight:700;margin-bottom:16px;line-height:1.4}
.solution-content p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:20px}
.solution-list{list-style:none;margin-bottom:28px}
.solution-list li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:15px;color:var(--text)}
.solution-list li svg{width:20px;height:20px;color:var(--success);flex-shrink:0;margin-top:3px}
.solution-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;transition:gap .2s}
.solution-link:hover{gap:10px}
.solution-link::after{content:'→';font-size:16px}
.tech-line{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;justify-content:center}
.tech-tag{background:var(--primary-light);color:var(--primary-dark);padding:6px 16px;border-radius:999px;font-size:13px;font-weight:500}

/* 证据 */
.evidence-section{background:var(--primary-dark);position:relative;overflow:hidden}
.evidence-section::before{content:'';position:absolute;top:-60px;right:-60px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.05)}
.evidence-section::after{content:'';position:absolute;bottom:-80px;left:-40px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.04)}
.evidence-inner{position:relative;z-index:1}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:56px}
.stat-item{text-align:center}
.stat-num{font-size:48px;font-weight:800;color:#fff;line-height:1.2;margin-bottom:8px}
.stat-num span{font-size:30px}
.stat-label{font-size:15px;color:rgba(255,255,255,.75)}
.case-wall{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}
.case-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:28px;display:flex;gap:20px;align-items:center;transition:background .3s}
.case-card:hover{background:rgba(255,255,255,.14)}
.case-card img{width:120px;height:100px;object-fit:cover;border-radius:12px;flex-shrink:0}
.case-info h4{font-size:17px;color:#fff;font-weight:600;margin-bottom:8px}
.case-info p{font-size:14px;color:rgba(255,255,255,.75);line-height:1.6}

/* 服务方案 */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.pricing-card{background:var(--card-bg);border-radius:var(--radius-lg);border:2px solid var(--border);padding:36px 32px;box-shadow:var(--shadow-sm);position:relative;transition:all .3s ease}
.pricing-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.pricing-card.recommend{border-color:var(--primary);box-shadow:var(--shadow-lg)}
.pricing-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;padding:4px 18px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:1px}
.pricing-name{font-size:20px;font-weight:700;margin-bottom:8px}
.pricing-desc{font-size:14px;color:var(--text-secondary);margin-bottom:24px}
.pricing-list{list-style:none;margin-bottom:32px;min-height:130px}
.pricing-list li{display:flex;align-items:flex-start;gap:8px;padding:8px 0;font-size:14px;color:var(--text)}
.pricing-list li::before{content:'✓';display:inline-flex;width:20px;height:20px;background:var(--primary-light);color:var(--primary);border-radius:50%;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;margin-top:2px;font-weight:700}
.pricing-card.recommend .pricing-list li::before{background:var(--primary);color:#fff}
.pricing-btn{display:block;text-align:center;width:100%}

/* FAQ */
.faq-list{max-width:840px;margin:0 auto}
.faq-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;transition:border-color .3s, box-shadow .3s}
.faq-item.active{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,111,168,.08)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);transition:color .2s}
.faq-q:hover{color:var(--primary)}
.faq-q .arrow{width:28px;height:28px;border-radius:8px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0;transition:transform .3s}
.faq-item.active .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}
.faq-item.active .faq-a{max-height:300px;padding-bottom:20px}
.faq-a p{font-size:14px;color:var(--text-secondary);line-height:1.8}

/* 资讯 */
.news-section{background:#fff}
.news-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:40px}
.news-header h2{font-size:30px;font-weight:700}
.view-all{font-size:14px;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.view-all:hover{color:var(--primary-dark)}
.news-list{display:flex;flex-direction:column;gap:16px}
.news-card{display:flex;align-items:center;gap:20px;background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px 24px;transition:all .3s}
.news-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.news-card-body{flex:1}
.news-card h4{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--text);transition:color .2s}
.news-card:hover h4{color:var(--primary)}
.news-card p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:16px;align-items:center}
.news-cat{background:var(--primary-light);color:var(--primary);padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600}
.news-card time{font-size:13px;color:var(--text-secondary)}
.news-empty{text-align:center;padding:48px 20px;background:var(--bg);border:1px dashed var(--border);border-radius:var(--radius-lg);color:var(--text-secondary);font-size:15px}

/* CTA */
.cta-block{position:relative;border-radius:24px;overflow:hidden;padding:72px 40px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);text-align:center;box-shadow:var(--shadow-lg)}
.cta-block::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.2}
.cta-block::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(47,111,168,.9),rgba(30,78,120,.95))}
.cta-content{position:relative;z-index:2}
.cta-content h2{font-size:32px;font-weight:700;color:#fff;margin-bottom:16px}
.cta-content p{font-size:17px;color:rgba(255,255,255,.85);margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-cta{background:#fff;color:var(--primary-dark);box-shadow:0 8px 20px rgba(0,0,0,.15)}
.btn-cta:hover{background:var(--primary-light);transform:translateY(-1px)}
.btn-cta-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.7)}
.btn-cta-outline:hover{border-color:#fff;background:rgba(255,255,255,.15)}

/* 页脚 */
.site-footer{background:#F0F3F7;border-top:1px solid var(--border);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;padding-bottom:48px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:20px;color:var(--text)}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:var(--text-secondary);transition:color .2s}
.footer-col ul li a:hover{color:var(--primary)}
.footer-contact-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-secondary)}
.footer-contact-list .icon{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0;text-align:center;font-size:13px;color:var(--text-secondary)}
.footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.footer-logo .logo-icon{width:28px;height:28px;border-radius:8px}
.footer-logo .logo-icon svg{width:16px;height:16px}
.footer-logo strong{font-size:18px;color:var(--primary-dark)}
.footer-brand-desc{font-size:13px;color:var(--text-secondary);line-height:1.7}

/* 浮动CTA */
.floating-cta{position:fixed;right:24px;bottom:24px;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);cursor:pointer;transition:all .3s;opacity:0;transform:translateY(20px);pointer-events:none;z-index:90}
.floating-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.floating-cta:hover{background:var(--accent);transform:translateY(-2px) scale(1.05)}
.floating-cta svg{width:24px;height:24px}
.floating-cta .label{position:absolute;top:-10px;left:50%;transform:translateX(-50%) scale(.9);background:var(--accent);color:#fff;font-size:12px;padding:2px 12px;border-radius:999px;white-space:nowrap;opacity:0;transition:opacity .2s}
.floating-cta:hover .label{opacity:1}

/* 响应式 */
@media (max-width:1024px){
  .main-nav{gap:18px}
  .header-actions .search-box{width:160px}
  .hero-inner{gap:40px}
  .hero-content h1{font-size:38px}
  .hero-img-wrap img{height:320px}
  .solution-item,.solution-item.reverse{flex-direction:column;gap:32px}
  .solution-media{max-width:560px}
  .case-wall{grid-template-columns:1fr}
  .pricing-grid{gap:16px}
  .pricing-card{padding:28px 20px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .main-nav,.header-actions .search-box,.header-link{display:none}
  .menu-toggle{display:flex}
  .header-cta{display:none}
  .hero{padding:48px 0 64px}
  .hero-inner{flex-direction:column;gap:40px}
  .hero-content h1{font-size:32px}
  .hero-sub{font-size:15px}
  .hero-visual{max-width:100%}
  .hero-img-wrap img{height:240px}
  .hero-badge{top:12px;left:12px;font-size:12px}
  .feature-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:32px 16px}
  .stat-num{font-size:36px}
  .pricing-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .pricing-card.recommend{transform:scale(1.02)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-block{padding:56px 24px}
  .cta-content h2{font-size:26px}
  .news-card{flex-direction:column;align-items:flex-start}
  .news-card img{width:100%;height:160px;object-fit:cover}
}
@media (max-width:520px){
  .hero-content h1{font-size:28px}
  .hero-sub{font-size:14px}
  .hero-btns{flex-direction:column;gap:12px}
  .hero-btns .btn{width:100%}
  .section-header h2{font-size:26px}
  .solution-content h3{font-size:22px}
  .stats-row{grid-template-columns:1fr 1fr}
  .stat-num{font-size:32px}
  .case-card{flex-direction:column;text-align:center}
  .case-card img{width:100%;height:140px}
  .footer-grid{grid-template-columns:1fr}
  .floating-cta{width:48px;height:48px;right:16px;bottom:16px}
  .cta-btns{flex-direction:column;gap:12px}
  .cta-btns .btn{width:100%}
  .news-header{flex-direction:column;gap:8px;align-items:flex-start}
}

/* roulang page: category1 */
/* ============ Design Tokens ============ */
:root {
  --primary: #2F6FA8;
  --primary-dark: #1E4E78;
  --primary-light: #EAF1F8;
  --accent: #ED8936;
  --accent-dark: #D97724;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --text: #1F2B38;
  --text-secondary: #617183;
  --border: #E3E9F0;
  --success: #268553;
  --warning: #C05621;
  --error: #C53030;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 10px rgba(30, 64, 100, 0.06);
  --shadow-md: 0 14px 30px rgba(30, 64, 100, 0.10);
  --shadow-accent: 0 10px 20px rgba(230, 120, 40, 0.25);
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container: 1200px;
  --space-section: 100px;
  --space-section-mobile: 60px;
  --transition: all 0.3s ease;
}

/* ============ Reset & Base ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ Header & Nav ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 1px 0 var(--border), 0 2px 12px rgba(30, 64, 100, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
}

.logo strong {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  position: relative;
  transition: var(--transition);
}

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

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

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

.search-box {
  display: flex;
  align-items: center;
  background: #F0F3F7;
  border-radius: var(--radius-md);
  padding: 0 12px;
  height: 40px;
  width: 220px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 111, 168, 0.15);
}

.search-box input {
  flex: 1;
  background: transparent;
  font-size: 14px;
  color: var(--text);
}

.search-box input::placeholder {
  color: #9AA8B8;
}

.search-box button {
  color: var(--primary);
  cursor: pointer;
  padding: 4px;
  font-size: 15px;
}

.login-link {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
}

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

.btn-accent-header {
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(230, 120, 40, 0.2);
}

.btn-accent-header:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text);
  font-size: 20px;
  background: var(--primary-light);
}

/* ============ Page Hero ============ */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, #EAF1F8 0%, #F7F9FC 60%, #EFF4F9 100%);
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(247, 249, 252, 0.96) 0%, rgba(247, 249, 252, 0.88) 55%, rgba(234, 241, 248, 0.7) 100%);
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

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

.breadcrumb .sep {
  color: #C0CBD6;
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.page-hero .hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  border: 1px solid var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(30, 78, 120, 0.25);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

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

/* ============ Sections ============ */
.section {
  padding: var(--space-section) 0;
}

.section-head {
  margin-bottom: 48px;
  max-width: 720px;
}

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

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
  color: var(--text);
}

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

/* ============ Category Cards (产品线导览) ============ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 16px;
}

.cat-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.cat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.cat-card:hover::before {
  opacity: 1;
}

.cat-card .icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 18px;
}

.cat-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.cat-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.cat-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 16px;
  transition: var(--transition);
}

.cat-card .card-link:hover {
  color: var(--accent);
  gap: 8px;
}

/* ============ Featured Products ============ */
.featured-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.featured-row {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 64px;
}

.featured-row:last-child {
  margin-bottom: 0;
}

.featured-row.reverse {
  flex-direction: row-reverse;
}

.featured-media {
  flex: 0 0 480px;
  position: relative;
}

.featured-media .deco-block {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px solid var(--primary-light);
  border-radius: var(--radius-lg);
  top: 14px;
  left: 14px;
  z-index: 0;
}

.featured-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.featured-content {
  flex: 1;
}

.featured-content .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(237, 137, 54, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.featured-content h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.featured-content .desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.feature-list {
  margin-bottom: 24px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
  padding: 6px 0;
}

.feature-list li i {
  color: var(--success);
  font-size: 14px;
  margin-top: 4px;
  flex-shrink: 0;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
}

.btn-text:hover {
  color: var(--accent);
  gap: 10px;
}

/* ============ Stats ============ */
.stats-section {
  background: var(--primary-dark);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.stats-section::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 20%;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 20px 10px;
}

.stat-item .num {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 8px;
  font-family: var(--font-family);
}

.stat-item .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

/* ============ Process Flow ============ */
.process-section {
  background: var(--bg);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.process-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.process-step .step-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 14px;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ FAQ ============ */
.faq-section {
  background: #fff;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 111, 168, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
}

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

.faq-question i {
  color: var(--primary);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

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

/* ============ CTA ============ */
.cta-section {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(135deg, #EAF1F8, #F7F9FC, #E3ECF3);
}

.cta-card {
  background: var(--primary-dark);
  border-radius: 24px;
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -40px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.cta-card::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -30px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
}

.cta-text {
  position: relative;
  z-index: 1;
}

.cta-text h2 {
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
}

.cta-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
}

.cta-btn-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  box-shadow: var(--shadow-accent);
}

.btn-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.btn-outline-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: var(--transition);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

/* ============ Footer ============ */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-logo strong {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

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

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
}

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

.footer-col ul a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-contact-list .icon {
  color: var(--primary);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #9AA8B8;
}

/* ============ Floating CTA ============ */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
}

.float-cta.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-cta:hover {
  background: var(--accent);
  color: #fff;
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .main-nav {
    gap: 4px;
  }
  .nav-link {
    padding: 8px 10px;
    font-size: 14px;
  }
  .search-box {
    width: 160px;
  }
  .cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-row {
    flex-direction: column;
    gap: 36px;
  }
  .featured-row.reverse {
    flex-direction: column;
  }
  .featured-media {
    flex: 0 0 auto;
    width: 100%;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-card {
    flex-direction: column;
    text-align: center;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .search-box {
    display: none;
  }
  .login-link {
    display: none;
  }
  .btn-accent-header {
    padding: 8px 14px;
    font-size: 13px;
  }
  .nav-mobile {
    display: block;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px 24px 24px;
    box-shadow: 0 12px 24px rgba(30, 64, 100, 0.08);
    z-index: 99;
    border-top: 1px solid var(--border);
  }
  .nav-mobile .nav-link {
    display: block;
    padding: 12px 16px;
    font-size: 16px;
  }
  .nav-mobile .nav-link.active {
    background: var(--primary-light);
  }
  .nav-mobile .nav-link::after {
    display: none;
  }
  .nav-mobile .search-box {
    display: flex;
    width: 100%;
    margin-top: 14px;
  }
  .nav-mobile .login-link {
    display: inline-block;
    padding: 12px 16px;
  }
  .section {
    --space-section: 60px;
    padding: var(--space-section) 0;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero {
    padding: 48px 0;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .stat-item .num {
    font-size: 32px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .cat-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .stat-item .num {
    font-size: 28px;
  }
  .stat-item .label {
    font-size: 13px;
  }
  .featured-media img {
    height: 220px;
  }
  .cta-card {
    padding: 36px 20px;
  }
  .cta-btn-wrap {
    flex-direction: column;
    width: 100%;
  }
  .btn-cta, .btn-outline-light {
    width: 100%;
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .float-cta {
    width: 48px;
    height: 48px;
    right: 16px;
    bottom: 16px;
    font-size: 18px;
  }
  .section-head h2 {
    font-size: 26px;
  }
}

/* Utility */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }

/* roulang page: category2 */
:root {
  --primary: #2F6FA8;
  --primary-dark: #1E4E78;
  --primary-light: #EAF1F8;
  --accent: #ED8936;
  --accent-hover: #D97724;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --text: #1F2B38;
  --text-secondary: #617183;
  --border: #E3E9F0;
  --success: #268553;
  --warning: #C05621;
  --error: #C53030;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-sm: 0 2px 10px rgba(30, 64, 100, 0.06);
  --shadow-lg: 0 14px 30px rgba(30, 64, 100, 0.10);
  --cta-shadow: 0 10px 20px rgba(230, 120, 40, 0.25);
  --container: 1200px;
  --pad: 24px;
  --pad-section: 96px;
  --pad-section-mobile: 60px;
  --transition: 0.25s 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;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }
input, button { font-family: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(30, 64, 100, 0.05);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon svg { width: 18px; height: 18px; }
.logo strong { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: 0.2px; }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: 20px; }
.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.search-box { position: relative; display: flex; align-items: center; }
.search-box input {
  width: 200px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #F0F3F7;
  padding: 0 38px 0 14px;
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: all var(--transition);
}
.search-box input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(47, 111, 168, 0.15);
}
.search-box .search-btn {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.search-box .search-btn:hover { color: var(--primary); background: var(--primary-light); }
.login-link { font-size: 14px; color: var(--text-secondary); font-weight: 500; white-space: nowrap; }
.login-link:hover { color: var(--primary); }
.btn-accent {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  box-shadow: var(--cta-shadow);
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-accent:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.btn-accent:active { transform: translateY(1px); }
.btn-accent:focus-visible { outline: 3px solid rgba(237, 137, 54, 0.35); outline-offset: 2px; }
.nav-toggle { display: none; }

/* Mobile Nav */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .nav-actions .search-box { display: none; }
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    color: var(--text);
  }
  .nav-toggle svg { width: 20px; height: 20px; }
  .mobile-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 14px 30px rgba(30,64,100,0.08);
    z-index: 998;
  }
  .mobile-menu.open { display: block; }
  .mobile-menu .nav-link { display: block; padding: 12px 8px; border-radius: 8px; border-bottom: 1px solid var(--border); }
  .mobile-menu .nav-link:last-child { border-bottom: none; }
  .mobile-menu .btn-accent { display: block; text-align: center; margin-top: 14px; }
}

/* ===== Hero ===== */
.solution-hero {
  position: relative;
  background: linear-gradient(135deg, #F0F5FA 0%, #EAF1F8 55%, #E3EDF5 100%);
  padding: 88px 0 72px;
  background-image: url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.solution-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
}
.solution-hero .hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-block;
  background: rgba(47, 111, 168, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 18px;
}
.solution-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.solution-hero .lead {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-md);
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(47,111,168,0.25); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(1px); box-shadow: none; }
.btn-outline { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.btn-outline:active { transform: translateY(1px); }
.hero-meta {
  display: flex;
  gap: 24px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-meta-item small { display: block; font-size: 13px; color: var(--text-secondary); }
.hero-meta-item strong { font-size: 24px; font-weight: 700; color: var(--primary); }

/* ===== Solution Rows ===== */
.solution-rows { padding: var(--pad-section) 0; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head h2 { font-size: 32px; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.section-head p { color: var(--text-secondary); font-size: 15px; max-width: 720px; margin: 0 auto; }
.solution-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  margin-bottom: 72px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}
.solution-row:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.solution-row:last-child { margin-bottom: 0; }
.solution-row.reverse .solution-img { order: 2; }
.solution-row.reverse .solution-copy { order: 1; }
.solution-img img { border-radius: var(--radius-lg); width: 100%; height: 240px; object-fit: cover; }
.solution-copy .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.solution-copy h3 { font-size: 24px; font-weight: 700; margin-bottom: 14px; color: var(--text); }
.solution-copy p { color: var(--text-secondary); font-size: 15px; margin-bottom: 18px; }
.solution-copy ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 8px;
}
.solution-copy ul li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 7px;
}
.btn-text { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; }
.btn-text:hover { color: var(--accent); }

/* ===== Capability ===== */
.capability {
  background: #fff;
  padding: var(--pad-section) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.cap-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.cap-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); background: #fff; transform: translateY(-4px); }
.cap-card .cap-icon {
  width: 46px;
  height: 46px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.cap-card .cap-icon svg { width: 24px; height: 24px; }
.cap-card h3 { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.cap-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== Process ===== */
.process { padding: var(--pad-section) 0; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process-step {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.process-step:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.process-step .step-num {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 20px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.process-step h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.process-step p { font-size: 14px; color: var(--text-secondary); }

/* ===== Scenario ===== */
.scenario { padding: var(--pad-section) 0; background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.scenario-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.scenario-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.scenario-card img { width: 100%; height: 150px; object-fit: cover; }
.scenario-card .scenario-body { padding: 20px; }
.scenario-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.scenario-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }
.scenario-card .scenario-link { display: inline-block; margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--primary); }

/* ===== Stats ===== */
.stats-band {
  padding: 56px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item strong { display: block; font-size: 40px; font-weight: 800; margin-bottom: 4px; }
.stat-item span { font-size: 14px; opacity: 0.9; }

/* ===== FAQ ===== */
.faq-section { padding: var(--pad-section) 0; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.faq-item.active { border-color: var(--primary); box-shadow: 0 4px 16px rgba(47, 111, 168, 0.10); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
.faq-q .arrow { font-size: 18px; color: var(--primary); transition: transform var(--transition); }
.faq-item.active .faq-q .arrow { transform: rotate(180deg); }
.faq-a { max-height: 0; padding: 0 24px; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; }
.faq-item.active .faq-a { max-height: 300px; padding: 0 24px 20px; }
.faq-a p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { padding: 72px 0; }
.cta-panel {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 20px;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.cta-panel h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.cta-panel p { font-size: 16px; opacity: 0.9; max-width: 560px; margin: 0 auto 28px; }
.cta-panel .btn-accent { background: #fff; color: var(--primary); box-shadow: 0 10px 24px rgba(0,0,0,0.18); }
.cta-panel .btn-accent:hover { background: var(--accent); color: #fff; }

/* ===== Footer ===== */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-logo .logo-icon { width: 30px; height: 30px; }
.footer-logo strong { font-size: 19px; font-weight: 700; }
.footer-brand-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; max-width: 260px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 14px; color: var(--text-secondary); }
.footer-col ul li a:hover { color: var(--primary); }
.footer-contact-list li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); }
.footer-contact-list .icon { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== Floating CTA ===== */
.floating-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(30, 64, 100, 0.25);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  font-size: 14px;
  font-weight: 600;
}
.floating-cta.visible { opacity: 1; transform: translateY(0); }
.floating-cta:hover { background: var(--accent); color: #fff; transform: scale(1.05); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .solution-hero { padding: 64px 0 48px; }
  .solution-row { gap: 32px; padding: 28px; grid-template-columns: 1fr 1fr; }
  .solution-row.reverse .solution-img { order: 1; }
  .solution-row.reverse .solution-copy { order: 2; }
  .capability-grid, .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { gap: 16px; grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  :root { --pad-section: 56px; }
  .solution-hero h1 { font-size: 30px; }
  .solution-row { grid-template-columns: 1fr; padding: 20px; }
  .solution-row.reverse .solution-img { order: 2; }
  .solution-row.reverse .solution-copy { order: 1; }
  .solution-img img { height: 180px; }
  .capability-grid, .scenario-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .process-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cta-panel { padding: 40px 24px; }
  .floating-cta { width: 48px; height: 48px; right: 16px; bottom: 16px; }
}
@media (max-width: 520px) {
  .capability-grid, .scenario-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .nav-actions .login-link { display: none; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { justify-content: center; width: 100%; }
}

/* roulang page: article */
:root {
  --primary: #2F6FA8;
  --primary-dark: #1E4E78;
  --primary-light: #EAF1F8;
  --accent: #ED8936;
  --accent-dark: #D97724;
  --bg: #F7F9FC;
  --card: #FFFFFF;
  --text: #1F2B38;
  --text-secondary: #617183;
  --border: #E3E9F0;
  --success: #268553;
  --warning: #C05621;
  --error: #C53030;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(30, 64, 100, 0.06);
  --shadow-lg: 0 14px 30px rgba(30, 64, 100, 0.10);
  --shadow-accent: 0 10px 20px rgba(230, 120, 40, 0.25);
  --container: 1200px;
  --transition: all 0.3s ease;
  --font-family: "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-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* 阅读进度条 */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 300;
  transition: width 0.1s linear;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(30, 64, 100, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-logo .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(47, 111, 168, 0.25);
}

.brand-logo .logo-icon svg {
  width: 20px;
  height: 20px;
}

.brand-logo strong {
  font-size: 21px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
}

.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-link {
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  transition: var(--transition);
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

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

.search-box {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #F0F3F7;
  border-radius: 12px;
  padding: 4px 4px 4px 14px;
  border: 1.5px solid transparent;
  transition: var(--transition);
  width: 220px;
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(47, 111, 168, 0.10);
}

.search-box input {
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  width: 100%;
  height: 30px;
}

.search-box input::placeholder {
  color: #9AA7B5;
}

.search-box button {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.search-box button:hover {
  background: var(--primary-dark);
}

.search-box button svg {
  width: 16px;
  height: 16px;
}

.header-link {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

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

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  box-shadow: var(--shadow-accent);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(230, 120, 40, 0.30);
}

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

.btn-accent:focus-visible {
  outline: 3px solid rgba(237, 137, 54, 0.4);
  outline-offset: 2px;
}

.header-tools .btn-accent {
  padding: 9px 18px;
  font-size: 14px;
  box-shadow: none;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: var(--transition);
  flex-shrink: 0;
}

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

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.site-header.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

.breadcrumb .sep {
  color: #B8C4D0;
}

.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 文章页 ===== */
.article-page {
  background: var(--bg);
  padding: 48px 0 0;
}

.article-container {
  max-width: 1000px;
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  padding: 52px 56px;
  border: 1px solid rgba(227, 233, 240, 0.6);
}

.article-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 26px;
  margin-bottom: 38px;
}

.article-header h1 {
  font-size: 34px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.2px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 13px;
  color: var(--text-secondary);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #C0CBD6;
}

.meta-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: #3A4757;
}

.article-body p {
  margin-bottom: 1.3em;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 2em 0 0.8em;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 1.8em 0 0.6em;
  line-height: 1.4;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.3em;
  padding-left: 1.5em;
}

.article-body ul li,
.article-body ol li {
  margin: 0.5em 0;
}

.article-body img {
  max-width: 100%;
  border-radius: 12px;
  display: block;
  margin: 2em auto;
  box-shadow: var(--shadow-sm);
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 18px 22px;
  border-radius: 0 12px 12px 0;
  margin: 1.8em 0;
  color: var(--text-secondary);
  font-size: 15px;
}

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

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 15px;
}

.article-body table th,
.article-body table td {
  padding: 12px 14px;
  border: 1px solid var(--border);
  text-align: left;
}

.article-body table th {
  background: var(--primary-light);
  color: var(--text);
  font-weight: 600;
}

.article-body pre {
  background: #1E2A37;
  color: #E8EEF5;
  padding: 18px 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 1.8em 0;
}

.article-body code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
  background: #EEF2F7;
  padding: 2px 6px;
  border-radius: 4px;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

/* ===== 文章分页器 ===== */
.article-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--border);
  margin-top: 52px;
  padding-top: 26px;
}

.pager-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.pager-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-1px);
}

.pager-link.center {
  border-color: transparent;
  background: var(--bg);
  color: var(--text-secondary);
}

.pager-link.center:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== 内容未找到 ===== */
.article-not-found {
  text-align: center;
  padding: 70px 20px;
}

.article-not-found .icon-circle {
  width: 72px;
  height: 72px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
  color: var(--primary);
}

.article-not-found .icon-circle svg {
  width: 34px;
  height: 34px;
}

.article-not-found h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.article-not-found p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 8px 18px rgba(47, 111, 168, 0.2);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(47, 111, 168, 0.28);
}

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

.btn-primary:focus-visible {
  outline: 3px solid rgba(47, 111, 168, 0.35);
  outline-offset: 2px;
}

/* ===== 相关推荐 ===== */
.related-section {
  background: var(--bg);
  padding: 70px 0 80px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.2px;
}

.text-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.text-link:hover {
  color: var(--primary-dark);
}

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

.related-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  border: 1px solid transparent;
  display: block;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.related-thumb {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--primary-light);
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover .related-thumb img {
  transform: scale(1.04);
}

.related-info {
  padding: 22px 22px 20px;
}

.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.related-date {
  font-size: 12px;
  color: #98A6B5;
}

.related-cat {
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 500;
}

/* ===== CTA 区 ===== */
.cta-section {
  background: var(--bg);
  padding: 20px 0 90px;
}

.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 24px;
  padding: 60px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
}

.cta-card::after {
  content: '';
  position: absolute;
  bottom: -70px;
  left: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.cta-card h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-card p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  max-width: 600px;
  margin: 0 auto 30px;
  position: relative;
  z-index: 1;
  line-height: 1.7;
}

.cta-card .btn-accent {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: none;
  position: relative;
  z-index: 1;
}

.cta-card .btn-accent:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #F1F4F8;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-logo .logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo .logo-icon svg {
  width: 18px;
  height: 18px;
}

.footer-logo strong {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

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

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

.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-contact-list .icon {
  color: var(--primary);
  font-style: normal;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #8A97A8;
}

/* ===== 浮动 CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--card);
  color: var(--primary);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  z-index: 99;
  border: 1px solid var(--border);
}

.float-cta.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.float-cta:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
  transform: translateY(-3px) scale(1.03);
}

.float-cta:focus-visible {
  outline: 3px solid rgba(237, 137, 54, 0.4);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 72px;
    right: 0;
    width: 280px;
    height: calc(100vh - 72px);
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 24px 20px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -12px 0 30px rgba(0, 0, 0, 0.08);
    border-left: 1px solid var(--border);
    overflow-y: auto;
  }

  .site-header.nav-open .main-nav {
    transform: translateX(0);
  }

  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 16px;
    font-size: 15px;
    border-radius: var(--radius-md);
  }

  .nav-link.active::after {
    display: none;
  }

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

  .nav-toggle {
    display: flex;
  }

  .header-tools .search-box,
  .header-tools .header-link {
    display: none;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

  .main-nav {
    top: 64px;
    height: calc(100vh - 64px);
  }

  .container {
    padding: 0 20px;
  }

  .article-page {
    padding: 32px 0 0;
  }

  .article-container {
    padding: 32px 24px;
    border-radius: 14px;
  }

  .article-header h1 {
    font-size: 26px;
  }

  .article-meta {
    gap: 8px 14px;
  }

  .article-body {
    font-size: 15px;
    line-height: 1.8;
  }

  .article-body h2 {
    font-size: 22px;
  }

  .article-body h3 {
    font-size: 18px;
  }

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

  .footer-brand-desc {
    max-width: none;
  }

  .cta-card {
    padding: 40px 24px;
  }

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

  .float-cta {
    width: 48px;
    height: 48px;
    right: 16px;
    bottom: 16px;
    font-size: 13px;
  }
}

@media (max-width: 520px) {
  .article-container {
    padding: 24px 18px;
  }

  .article-header h1 {
    font-size: 22px;
    line-height: 1.4;
  }

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

  .pager-link {
    justify-content: center;
  }

  .breadcrumb .container {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .breadcrumb .container::-webkit-scrollbar {
    display: none;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .section-head {
    margin-bottom: 24px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .cta-card {
    padding: 32px 20px;
    border-radius: 18px;
  }

  .cta-card h2 {
    font-size: 21px;
  }

  .cta-card p {
    font-size: 14px;
    margin-bottom: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .header-tools .btn-accent {
    padding: 8px 14px;
    font-size: 13px;
  }

  .brand-logo strong {
    font-size: 18px;
  }

  .brand-logo .logo-icon {
    width: 34px;
    height: 34px;
  }

  .article-body table {
    font-size: 13px;
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .article-body blockquote {
    padding: 14px 16px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #2F6FA8;
  --primary-dark: #1E4E78;
  --primary-light: #EAF1F8;
  --accent: #ED8936;
  --accent-dark: #D97724;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --text: #1F2B38;
  --text-secondary: #617183;
  --border: #E3E9F0;
  --success: #268553;
  --warning: #C05621;
  --error: #C53030;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow: 0 2px 10px rgba(30, 64, 100, 0.06);
  --shadow-hover: 0 14px 30px rgba(30, 64, 100, 0.10);
  --shadow-accent: 0 10px 20px rgba(230, 120, 40, 0.25);
  --container-w: 1200px;
  --space-section: 96px;
  --space-section-mobile: 56px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-dark);
}
ul, ol {
  list-style: none;
}
button, input {
  font-family: inherit;
  font-size: inherit;
}
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 6px rgba(30, 64, 100, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.logo-icon svg {
  width: 18px;
  height: 18px;
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  border-bottom-color: var(--primary-light);
}
.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.search-wrap {
  display: flex;
  align-items: center;
  background: #F0F3F7;
  border-radius: 12px;
  padding: 0 12px;
  height: 38px;
  width: 220px;
  transition: background 0.2s, box-shadow 0.2s;
}
.search-wrap:focus-within {
  background: #fff;
  border: 1px solid var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 111, 168, 0.12);
}
.search-wrap input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: 14px;
  color: var(--text);
}
.search-wrap input::placeholder {
  color: #9AA7B4;
}
.search-wrap button {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 16px;
  padding: 4px;
  display: flex;
  align-items: center;
}
.search-wrap button:hover {
  color: var(--primary);
}
.header-login {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.header-login:hover {
  color: var(--primary);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 111, 168, 0.15);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
}
.btn-accent:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
}
.btn-outline {
  background: #fff;
  color: var(--text);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
  border-radius: 12px;
}
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s;
}
/* ===== Page Hero ===== */
.page-hero {
  background: linear-gradient(135deg, #F0F5FA 0%, #E8EFF6 40%, #F7F9FC 100%);
  padding: 72px 0 88px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(47, 111, 168, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-secondary);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb span {
  color: #9AA7B4;
}
.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-hero .subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 680px;
}
/* ===== Section ===== */
.section {
  padding: var(--space-section) 0;
}
.section-alt {
  background: #fff;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}
/* ===== Case Cards ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.case-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: var(--primary-light);
}
.case-card-img {
  height: 190px;
  overflow: hidden;
  position: relative;
}
.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.case-card:hover .case-card-img img {
  transform: scale(1.03);
}
.case-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.case-card-body {
  padding: 24px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.case-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}
.case-card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.case-card-link:hover {
  color: var(--primary-dark);
}
/* ===== Timeline ===== */
.process-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  margin-top: 56px;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-light);
}
.timeline-item {
  position: relative;
  text-align: center;
  padding: 0 12px;
}
.timeline-step {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  border: 4px solid #fff;
  box-shadow: 0 4px 12px rgba(47, 111, 168, 0.2);
}
.timeline-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.timeline-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
/* ===== Stats ===== */
.stats-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stats-item {
  padding: 32px 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.stats-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
}
.stats-label {
  font-size: 14px;
  color: var(--text-secondary);
}
/* ===== Industry Tags ===== */
.industry-section {
  padding: var(--space-section) 0;
  background: #fff;
}
.industry-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  max-width: 880px;
  margin: 40px auto 0;
}
.industry-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 999px;
  transition: all 0.2s;
  cursor: default;
}
.industry-tag:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(47, 111, 168, 0.15);
}
/* ===== FAQ ===== */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(47, 111, 168, 0.08);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
  transition: color 0.2s;
  gap: 16px;
}
.faq-q:hover {
  color: var(--primary);
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s;
  font-size: 14px;
  color: var(--primary);
  font-weight: 700;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.active .faq-a {
  max-height: 300px;
  padding: 0 24px 20px;
}
/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
  background: linear-gradient(135deg, #EAF1F8 0%, #F7F9FC 100%);
}
.cta-card {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 20px;
  padding: 56px 64px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.cta-card h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-card p {
  font-size: 16px;
  line-height: 1.7;
  opacity: 0.9;
  max-width: 520px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}
.cta-card .btn {
  position: relative;
  z-index: 1;
  background: #fff;
  color: var(--primary);
  font-size: 16px;
  padding: 14px 36px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.cta-card .btn:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}
/* ===== Footer ===== */
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.footer-logo .logo-icon svg {
  width: 16px;
  height: 16px;
}
.footer-logo strong {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
}
.footer-brand-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  position: relative;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.2s, padding-left 0.2s;
}
.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact-list li {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-contact-list .icon {
  color: var(--primary);
  font-weight: 600;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: #9AA7B4;
}
/* ===== Floating CTA ===== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  z-index: 999;
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  font-size: 14px;
  font-weight: 600;
}
.float-cta.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.float-cta:hover {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    gap: 18px;
  }
  .search-wrap {
    width: 160px;
  }
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 24px;
  }
  .timeline::before {
    display: none;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}
@media (max-width: 768px) {
  :root {
    --space-section: 64px;
  }
  .header-inner {
    height: 56px;
  }
  .main-nav {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 0;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0,0,0,0.06);
    z-index: 999;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
  }
  .nav-link:last-child {
    border-bottom: none;
  }
  .nav-link.active {
    border-bottom-color: var(--primary);
  }
  .search-wrap {
    display: none;
  }
  .header-login {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .header-actions .btn-accent {
    padding: 8px 16px;
    font-size: 13px;
  }
  .page-hero {
    padding: 48px 0 56px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .case-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .section-head {
    margin-bottom: 36px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .timeline {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .industry-tags {
    gap: 12px;
  }
  .cta-card {
    padding: 40px 24px;
  }
  .cta-card h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .float-cta {
    width: 48px;
    height: 48px;
    right: 16px;
    bottom: 16px;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .case-card-img {
    height: 160px;
  }
  .cta-section {
    padding: 48px 0;
  }
  .cta-card {
    border-radius: 16px;
    padding: 32px 20px;
  }
  .cta-card .btn {
    padding: 12px 28px;
    font-size: 15px;
  }
}

/* roulang page: category4 */
:root {
  --primary: #2F6FA8;
  --primary-dark: #1E4E78;
  --primary-light: #EAF1F8;
  --accent: #ED8936;
  --accent-dark: #D97724;
  --bg-page: #F7F9FC;
  --bg-card: #FFFFFF;
  --text-main: #1F2B38;
  --text-sub: #617183;
  --border-color: #E3E9F0;
  --success: #268553;
  --warning: #C05621;
  --error: #C53030;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 2px 10px rgba(30, 64, 100, 0.06);
  --shadow-hover: 0 14px 30px rgba(30, 64, 100, 0.10);
  --shadow-accent: 0 10px 20px rgba(230, 120, 40, 0.25);
  --container-max: 1200px;
  --space-section: 96px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-page);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease;
}

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

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============== Header & Nav ============== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  height: 64px;
  box-shadow: 0 2px 10px rgba(30, 64, 100, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo strong {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 1px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0 12px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-sub);
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
  transition: color .2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transition: width .25s ease;
}

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

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

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: #F0F3F7;
  border-radius: var(--radius-md);
  padding: 6px 8px 6px 14px;
  border: 1.5px solid transparent;
  transition: all .25s ease;
  width: 220px;
}

.search-box:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 111, 168, 0.12);
}

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

.search-box input::placeholder {
  color: #9AA7B5;
}

.search-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background .2s ease;
  font-weight: 500;
}

.search-btn:hover {
  background: var(--primary-dark);
}

.header-login {
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 500;
  white-space: nowrap;
}

.header-login:hover {
  color: var(--primary);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
  box-shadow: var(--shadow-accent);
  white-space: nowrap;
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 14px 24px rgba(230, 120, 40, 0.30);
}

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

.btn-accent:focus-visible,
.btn-primary:focus-visible,
.btn-outline:focus-visible {
  outline: 3px solid rgba(47, 111, 168, 0.30);
  outline-offset: 2px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-main);
  margin: 4px auto;
  border-radius: 2px;
  transition: all .3s ease;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px 24px;
  z-index: 99;
  box-shadow: 0 14px 24px rgba(30, 64, 100, 0.10);
}

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

.mobile-nav .nav-link {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 16px;
}

.mobile-nav .nav-link:last-child {
  border-bottom: none;
}

.mobile-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.mobile-nav .nav-link::after {
  display: none;
}

/* ============== Hero ============== */
.page-hero {
  background: linear-gradient(135deg, #EAF1F8 0%, #F7F9FC 60%, #FFFFFF 100%);
  padding: 80px 0 72px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-copy .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

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

.page-hero .hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-sub);
  max-width: 500px;
  margin-bottom: 28px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(30, 78, 120, 0.18);
}

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

.btn-outline {
  background: #fff;
  color: var(--text-main);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 13px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.btn-outline:active {
  background: #E0EAF3;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-img-wrap {
  position: relative;
  width: 100%;
  max-width: 460px;
}

.hero-img-wrap img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  position: relative;
  z-index: 2;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-img-wrap::before {
  content: "";
  position: absolute;
  top: 18px;
  left: -14px;
  width: 100%;
  height: 100%;
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  z-index: 1;
}

.hero-img-wrap::after {
  content: "";
  position: absolute;
  bottom: -12px;
  right: -10px;
  width: 80px;
  height: 80px;
  background: var(--accent);
  border-radius: 20px;
  z-index: 0;
  opacity: 0.15;
}

/* ============== Service Cards ============== */
.section {
  padding: var(--space-section) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 10px;
}

.section-header p {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

.service-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid transparent;
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
}

.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--primary);
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-main);
}

.service-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ============== Flow ============== */
.flow-section {
  background: var(--bg-page);
  padding: 96px 0;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 8px;
}

.flow-step {
  position: relative;
  padding: 28px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: all .3s ease;
  text-align: center;
}

.flow-step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.flow-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.flow-step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.flow-step p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

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

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--border-color);
  overflow: hidden;
  transition: all .3s ease;
}

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

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
}

.faq-question {
  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);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color .2s ease;
  font-family: var(--font-main);
}

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

.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform .3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
  padding: 0 24px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ============== Download ============== */
.download-section {
  padding: 96px 0;
  background: #fff;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.download-card {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  align-items: center;
  transition: all .3s ease;
}

.download-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.download-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.download-icon svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.download-info {
  flex: 1;
  min-width: 0;
}

.download-info h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}

.download-info p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 6px;
}

.download-info .download-meta {
  font-size: 12px;
  color: #9AA7B5;
  display: flex;
  gap: 12px;
}

.download-btn {
  background: none;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  border-radius: var(--radius-sm);
  padding: 9px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
  font-family: var(--font-main);
}

.download-btn:hover {
  background: var(--primary);
  color: #fff;
}

/* ============== CTA ============== */
.cta-section {
  padding: 80px 0 96px;
  background: var(--bg-page);
}

.cta-card {
  background: linear-gradient(135deg, #1E4E78 0%, #2F6FA8 100%);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity: 0.10;
  border-radius: 50%;
}

.cta-card::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -5%;
  width: 200px;
  height: 200px;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 50%;
}

.cta-card h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}

.cta-card p {
  color: rgba(255,255,255,0.85);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
  position: relative;
  z-index: 2;
}

.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.cta-btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
  box-shadow: var(--shadow-accent);
}

.cta-btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

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

.cta-btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-sm);
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all .25s ease;
  font-family: var(--font-main);
}

.cta-btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}

/* ============== Footer ============== */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border-color);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo .logo-icon svg {
  width: 17px;
  height: 17px;
}

.footer-logo strong {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 18px;
}

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

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-sub);
  transition: color .2s ease;
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-contact-list li {
  font-size: 14px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact-list li .icon {
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #9AA7B5;
}

/* ============== Floating CTA ============== */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--border-color);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 200;
  opacity: 0;
  transform: translateY(20px) scale(0.9);
  transition: all .35s ease;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
}

.float-cta.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.float-cta:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px) scale(1.05);
}

.float-cta svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ============== Responsive ============== */
@media (max-width: 1080px) {
  .main-nav {
    gap: 14px;
  }

  .search-box {
    width: 170px;
  }

  .btn-accent {
    padding: 10px 14px;
    font-size: 13px;
  }

  .header-login {
    display: none;
  }

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

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

@media (max-width: 820px) {
  .main-nav,
  .search-box {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .hero-visual {
    order: 2;
  }

  .hero-img-wrap {
    max-width: 100%;
  }

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

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

  .section {
    padding: 64px 0;
  }

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

  .cta-card {
    padding: 40px 28px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .page-hero {
    padding: 48px 0 56px;
  }

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

  .hero-btns {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-outline {
    justify-content: center;
    text-align: center;
  }

  .service-cards {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .download-card {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .download-btn {
    width: 100%;
    text-align: center;
  }

  .cta-card h2 {
    font-size: 26px;
  }

  .cta-btns {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-btn-primary,
  .cta-btn-ghost {
    text-align: center;
  }

  .float-cta {
    width: 48px;
    height: 48px;
    right: 16px;
    bottom: 16px;
  }
}

/* roulang page: category5 */
:root {
  --primary: #2F6FA8;
  --primary-dark: #1E4E78;
  --primary-light: #EAF1F8;
  --accent: #ED8936;
  --accent-dark: #D97724;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --text-main: #1F2B38;
  --text-sub: #617183;
  --border: #E3E9F0;
  --success: #268553;
  --warning: #C05621;
  --error: #C53030;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 10px rgba(30, 64, 100, 0.06);
  --shadow-hover: 0 14px 30px rgba(30, 64, 100, 0.10);
  --shadow-cta: 0 10px 20px rgba(230, 120, 40, 0.25);
  --container: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; }
input { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  transition: all .25s ease;
}
.btn:focus-visible { outline: 3px solid rgba(47, 111, 168, .35); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-cta); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: #fff; color: var(--text-main); border-color: var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-secondary { background: var(--primary); color: #fff; }
.btn-secondary:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(30,64,100,.04);
  height: 64px;
}
.header-inner { display: flex; align-items: center; height: 64px; gap: 24px; }
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
}
.logo-icon svg { width: 18px; height: 18px; }
.brand-logo strong { font-size: 20px; font-weight: 700; color: var(--text-main); letter-spacing: .5px; }
.main-nav { display: flex; align-items: center; gap: 28px; margin-left: 16px; }
.nav-link {
  font-size: 15px; color: var(--text-sub); font-weight: 500;
  position: relative; padding: 20px 0; transition: color .2s;
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -1px;
  width: 100%; height: 2px; background: var(--primary);
  transform: scaleX(0); transition: transform .2s;
  border-radius: 2px;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 16px; margin-left: auto; flex-shrink: 0; }
.search-box {
  display: flex; align-items: center; background: #F0F3F7;
  border-radius: 12px; padding: 0 12px; width: 220px; height: 38px;
  border: 1px solid transparent; transition: all .2s;
}
.search-box:focus-within { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,111,168,.12); }
.search-box input {
  flex: 1; border: none; background: transparent; font-size: 14px;
  color: var(--text-main); outline: none;
}
.search-box button {
  background: none; border: none; color: var(--text-sub);
  padding: 6px; display: flex; align-items: center;
}
.search-box button:hover { color: var(--primary); }
.header-actions .btn { padding: 10px 24px; font-size: 14px; }
.menu-toggle { display: none; background: none; border: none; width: 40px; height: 40px; border-radius: 8px; position: relative; }
.menu-toggle span {
  display: block; width: 20px; height: 2px; background: var(--text-main);
  margin: 4px auto; transition: all .3s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===== Hero ===== */
.page-hero {
  background: linear-gradient(135deg, #EAF1F8 0%, #F7F9FC 60%), url('/assets/images/backpic/back-2.png');
  background-size: cover, cover;
  background-position: center;
  padding: 88px 0;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(#c5d5e6 1px, transparent 1px);
  background-size: 20px 20px; opacity: .4;
}
.hero-wrap { display: flex; align-items: center; gap: 48px; position: relative; z-index: 1; }
.hero-text { flex: 1; }
.hero-badge {
  display: inline-block; background: var(--primary-light); color: var(--primary-dark);
  font-size: 13px; font-weight: 600; border-radius: var(--radius-pill);
  padding: 6px 18px; margin-bottom: 20px;
  border: 1px solid rgba(47,111,168,.18);
}
.hero-text h1 { font-size: 46px; font-weight: 800; line-height: 1.25; margin-bottom: 18px; color: var(--text-main); }
.hero-text p { font-size: 17px; color: var(--text-sub); max-width: 520px; line-height: 1.8; }
.hero-meta { display: flex; gap: 18px; margin-top: 28px; flex-wrap: wrap; }
.hero-meta span {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-pill);
  padding: 8px 16px; font-size: 13px; color: var(--text-sub); font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
.hero-meta span::before { content: "✓"; color: var(--success); font-weight: 700; }
.hero-visual { flex: 0 0 380px; position: relative; }
.hero-visual::before {
  content: ""; position: absolute; top: 16px; right: -12px; bottom: -12px; left: 12px;
  background: var(--primary-light); border-radius: var(--radius-lg); z-index: 0;
}
.hero-visual img {
  position: relative; z-index: 1; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover); height: 260px; width: 100%; object-fit: cover;
}

/* ===== Section title ===== */
.section-head { text-align: center; max-width: 620px; margin: 0 auto 56px; }
.section-head h2 { font-size: 34px; font-weight: 700; color: var(--text-main); line-height: 1.3; }
.section-head p { font-size: 16px; color: var(--text-sub); margin-top: 12px; line-height: 1.7; }
.section-tag {
  display: inline-block; font-size: 13px; font-weight: 600;
  color: var(--primary); background: var(--primary-light);
  padding: 6px 16px; border-radius: var(--radius-pill); margin-bottom: 16px;
}

/* ===== Featured cards ===== */
.featured-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
.feature-card {
  background: var(--card-bg); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); overflow: hidden; transition: all .3s ease;
  display: flex; flex-direction: column; border: 1px solid transparent;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--primary-light); }
.feature-card.large .feature-img { height: 260px; }
.feature-card .feature-img { height: 180px; overflow: hidden; }
.feature-card .feature-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.feature-card:hover .feature-img img { transform: scale(1.04); }
.feature-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.feature-label {
  font-size: 12px; color: var(--primary); font-weight: 600;
  background: var(--primary-light); border-radius: var(--radius-pill);
  padding: 4px 12px; align-self: flex-start; margin-bottom: 14px;
}
.feature-body h3 { font-size: 19px; font-weight: 600; line-height: 1.45; margin-bottom: 10px; }
.feature-card.large .feature-body h3 { font-size: 22px; }
.feature-body p { font-size: 14px; color: var(--text-sub); line-height: 1.7; flex: 1; }
.feature-foot { display: flex; align-items: center; gap: 12px; margin-top: 16px; font-size: 13px; color: var(--text-sub); }
.feature-foot .source { color: var(--primary); font-weight: 500; }
.feature-foot .arrow { margin-left: auto; color: var(--accent); font-weight: 600; }

/* ===== 资讯列表 ===== */
.news-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.news-filters { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 44px; }
.filter-btn {
  border: 1px solid var(--border); background: #fff; border-radius: var(--radius-pill);
  padding: 8px 22px; font-size: 14px; color: var(--text-sub);
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 500; }
.news-list { max-width: 980px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: flex; align-items: stretch; background: var(--bg);
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); transition: all .3s;
}
.news-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: var(--primary-light); }
.news-thumb { width: 180px; flex-shrink: 0; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-item:hover .news-thumb img { transform: scale(1.05); }
.news-content { padding: 22px 28px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; gap: 14px; align-items: center; font-size: 13px; color: var(--text-sub); margin-bottom: 10px; }
.news-cat {
  background: var(--primary-light); color: var(--primary-dark);
  padding: 3px 10px; border-radius: var(--radius-pill); font-weight: 500;
  font-size: 12px;
}
.news-content h3 { font-size: 18px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.news-content h3 a { transition: color .2s; }
.news-content h3 a:hover { color: var(--primary); }
.news-content .news-desc {
  font-size: 14px; color: var(--text-sub); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-foot { display: flex; align-items: center; margin-top: auto; padding-top: 14px; }
.news-foot .more { font-size: 14px; color: var(--accent); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.news-foot .more:hover { color: var(--accent-dark); }

/* ===== 内容频道导航 ===== */
.channel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.channel-card {
  background: var(--card-bg); border-radius: var(--radius-lg);
  padding: 36px 30px; box-shadow: var(--shadow-card);
  border: 1px solid var(--border); transition: all .3s;
  display: flex; flex-direction: column; align-items: flex-start;
}
.channel-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--primary-light); }
.channel-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.channel-icon svg { width: 24px; height: 24px; }
.channel-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.channel-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 20px; flex: 1; }
.channel-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.channel-link:hover { color: var(--primary-dark); }
.channel-link svg { width: 16px; height: 16px; }

/* ===== CTA ===== */
.cta-block { background: linear-gradient(120deg, #1E4E78, #2F6FA8); border-radius: 24px; padding: 60px; text-align: center; position: relative; overflow: hidden; }
.cta-block::before {
  content: ""; position: absolute; top: -60px; right: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.cta-block::after {
  content: ""; position: absolute; bottom: -80px; left: -40px;
  width: 180px; height: 180px; border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.cta-block h2 { color: #fff; font-size: 32px; font-weight: 700; margin-bottom: 14px; position: relative; z-index: 1; }
.cta-block p { color: rgba(255,255,255,.85); font-size: 16px; margin-bottom: 32px; position: relative; z-index: 1; }
.cta-block .btn { position: relative; z-index: 1; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); margin-bottom: 16px;
  border: 1px solid var(--border); transition: all .3s;
  padding: 0 24px;
}
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-hover); }
.faq-q {
  display: flex; align-items: center; gap: 12px;
  font-size: 16px; font-weight: 600; color: var(--text-main);
  padding: 22px 0; cursor: pointer; user-select: none;
}
.faq-q .faq-icon { margin-left: auto; flex-shrink: 0; width: 24px; height: 24px; transition: transform .3s; }
.faq-item.active .faq-icon { transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height .35s ease;
  font-size: 14px; color: var(--text-sub); line-height: 1.75;
}
.faq-item.active .faq-a { max-height: 300px; padding-bottom: 24px; }

/* ===== 页脚 ===== */
.site-footer { background: #EFF3F8; border-top: 1px solid var(--border); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.footer-logo .logo-icon { background: var(--primary); color: #fff; width: 30px; height: 30px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; }
.footer-logo .logo-icon svg { width: 18px; height: 18px; }
.footer-logo strong { font-size: 20px; font-weight: 700; color: var(--text-main); }
.footer-brand-desc { font-size: 14px; color: var(--text-sub); line-height: 1.8; max-width: 280px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--text-sub); transition: color .2s; }
.footer-col ul li a:hover { color: var(--primary); }
.footer-contact-list li { font-size: 14px; color: var(--text-sub); display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-contact-list .icon { color: var(--primary); font-style: normal; }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 20px 0; text-align: center;
  font-size: 13px; color: #94A3B8;
}
.footer-bottom p { line-height: 1.6; }

/* ===== 浮动CTA ===== */
.float-cta {
  position: fixed; right: 24px; bottom: 24px; z-index: 99;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-hover); opacity: 0; transform: translateY(20px);
  transition: all .3s; border: none;
}
.float-cta.show { opacity: 1; transform: translateY(0); }
.float-cta:hover { background: var(--primary-dark); transform: translateY(-3px); }
.float-cta svg { width: 24px; height: 24px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .main-nav { gap: 18px; }
  .search-box { width: 150px; }
  .featured-grid { grid-template-columns: 1fr 1fr; }
  .feature-card.large { grid-column: 1 / -1; }
  .feature-card.large .feature-img { height: 300px; }
  .hero-wrap { gap: 32px; }
  .hero-visual { flex-basis: 300px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .page-hero { padding: 56px 0; }
  .hero-wrap { flex-direction: column; }
  .hero-text h1 { font-size: 34px; }
  .hero-visual { flex-basis: auto; width: 100%; }
  .hero-visual img { height: 200px; }
  .featured-grid { grid-template-columns: 1fr; }
  .feature-card.large .feature-img { height: 200px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .site-header { height: auto; }
  .header-inner { flex-wrap: wrap; height: auto; padding: 12px 0; }
  .menu-toggle { display: block; order: 3; margin-left: auto; }
  .main-nav {
    display: none; flex-direction: column; width: 100%;
    background: #fff; padding: 16px 0; gap: 4px;
    border-top: 1px solid var(--border); margin-left: 0;
  }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { padding: 12px 0; font-size: 16px; width: 100%; border-bottom: 1px solid #f0f2f5; }
  .main-nav .nav-link::after { display: none; }
  .main-nav .nav-link.active { color: var(--primary); }
  .header-actions { order: 2; margin-left: 0; }
  .search-box { width: 180px; }
  .header-actions .btn { padding: 8px 18px; font-size: 13px; }
  .brand-logo { order: 1; }
  .news-item { flex-direction: column; }
  .news-thumb { width: 100%; height: 160px; }
  .channel-grid { grid-template-columns: 1fr; }
  .cta-block { padding: 40px 28px; }
  .cta-block h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-text h1 { font-size: 28px; }
  .hero-meta { flex-direction: column; gap: 10px; }
  .header-actions .btn { display: none; }
  .search-box { flex: 1; width: auto; }
  .footer-grid { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .float-cta { width: 48px; height: 48px; right: 16px; bottom: 16px; }
  .news-content { padding: 18px; }
  .faq-q { font-size: 15px; }
}