/* roulang page: index */
:root{
  --primary:#2B6A8F;
  --primary-dark:#1B4C6B;
  --accent:#177E89;
  --cta:#E08A32;
  --cta-hover:#c9771f;
  --bg:#F5F8FA;
  --bg-warm:#FBFDFE;
  --card-bg:#FFFFFF;
  --text:#1F2A33;
  --text-secondary:#5B6B78;
  --text-muted:#8FA0AC;
  --border:#E6EDF2;
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 4px 20px rgba(31,42,51,0.05);
  --shadow-hover:0 8px 30px rgba(31,42,51,0.10);
  --transition:0.25s ease;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:color var(--transition);}
a:hover{color:var(--primary);}
img{max-width:100%;height:auto;display:block;}
ul{list-style:none;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.4;border:1px solid transparent;
  transition:all var(--transition);cursor:pointer;letter-spacing:.02em;
}
.btn:focus{outline:none;box-shadow:0 0 0 3px rgba(43,106,143,0.25);}
.btn-primary-custom{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-primary-custom:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(43,106,143,0.3);}
.btn-primary-custom:active{transform:translateY(1px);box-shadow:none;}
.btn-outline-custom{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-outline-custom:hover{background:rgba(43,106,143,0.08);border-color:var(--primary);color:var(--primary);}
.btn-outline-custom:active{transform:translateY(1px);}
.btn-cta-custom{background:var(--cta);color:#fff;border-color:var(--cta);}
.btn-cta-custom:hover{background:var(--cta-hover);border-color:var(--cta-hover);color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(224,138,50,0.3);}
.btn-cta-custom:active{transform:translateY(1px);box-shadow:none;}
.btn-light-custom{background:#fff;color:var(--primary);border-color:#D8E2E8;}
.btn-light-custom:hover{background:var(--bg);border-color:var(--primary);color:var(--primary);}
.btn-sm-custom{padding:8px 20px;font-size:14px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1050;
  background:var(--primary);
  transition:box-shadow var(--transition);
}
.site-header.is-sticky{box-shadow:0 2px 16px rgba(31,42,51,0.12);}
.topbar{background:var(--primary);border-bottom:1px solid rgba(255,255,255,0.12);transition:all var(--transition);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:48px;gap:16px;}
.brand-logo{font-size:20px;font-weight:700;color:#fff;white-space:nowrap;letter-spacing:.02em;}
.brand-logo i{color:#ffb347;margin-right:2px;}
.brand-logo:hover{color:#fff;}
.search-wrapper{flex:1;max-width:480px;display:flex;align-items:center;background:rgba(255,255,255,0.15);border-radius:24px;padding:3px 6px 3px 16px;}
.search-wrapper input{
  flex:1;border:none;background:transparent;color:#fff;font-size:14px;padding:7px 0;outline:none;min-width:0;
}
.search-wrapper input::placeholder{color:rgba(255,255,255,0.65);}
.search-wrapper .search-btn{background:var(--cta);border:none;color:#fff;border-radius:20px;padding:6px 16px;font-size:13px;cursor:pointer;transition:background var(--transition);}
.search-wrapper .search-btn:hover{background:var(--cta-hover);}
.hot-trends{color:rgba(255,255,255,0.8);font-size:13px;white-space:nowrap;display:flex;align-items:center;gap:4px;}
.hot-trends .hot-label{color:#ffd9a8;font-weight:600;}
.mainnav{background:var(--card-bg);border-bottom:1px solid var(--border);}
.nav-inner{display:flex;align-items:center;height:56px;position:relative;}
.nav-list{display:flex;align-items:center;gap:4px;height:100%;flex:1;}
.nav-list > li{height:100%;display:flex;align-items:center;position:relative;}
.nav-list > li > a{
  display:flex;align-items:center;padding:0 18px;height:100%;
  color:var(--text);font-size:15px;font-weight:500;white-space:nowrap;
  position:relative;transition:color var(--transition);
}
.nav-list > li > a:hover{color:var(--primary);}
.nav-list > li > a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;
  background:var(--primary);border-radius:3px 3px 0 0;
  opacity:0;transform:scaleX(0.5);transition:all var(--transition);
}
.nav-list > li.active > a{color:var(--primary);font-weight:600;}
.nav-list > li.active > a::after{opacity:1;transform:scaleX(1);}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;background:none;border:1px solid var(--border);color:var(--text);
  font-size:15px;padding:8px 16px;border-radius:var(--radius-sm);cursor:pointer;
  transition:all var(--transition);
}
.nav-toggle:hover{background:var(--bg);color:var(--primary);border-color:var(--primary);}

/* ===== Hero ===== */
.hero{
  background:var(--bg-warm);
  padding:80px 0 60px;
  position:relative;
  overflow:hidden;
}
.hero .container{position:relative;z-index:2;}
.hero-row{display:flex;align-items:center;gap:48px;min-height:calc(80vh - 220px);}
.hero-left{flex:1;max-width:560px;padding-left:20px;}
.hero-right{flex:1;display:flex;justify-content:center;position:relative;}
.hero-img-card{
  background:#fff;border-radius:16px;padding:14px;
  box-shadow:var(--shadow-hover);position:relative;z-index:2;max-width:440px;width:100%;
}
.hero-img-card img{border-radius:10px;width:100%;height:auto;}
.hero-deco{
  position:absolute;bottom:-24px;right:-16px;width:70%;height:40%;
  background:rgba(43,106,143,0.08);border-radius:16px;z-index:1;
}
.hero-deco2{
  position:absolute;top:20px;left:-20px;width:60px;height:60px;
  background:rgba(23,126,137,0.12);border-radius:12px;z-index:1;
}
.hero-badge{
  display:inline-block;background:rgba(43,106,143,0.10);color:var(--primary);
  font-size:13px;font-weight:600;padding:6px 16px;border-radius:20px;margin-bottom:20px;
  letter-spacing:.04em;
}
.hero h1{
  font-size:clamp(28px,3vw,40px);
  font-weight:700;line-height:1.3;color:var(--text);
  margin-bottom:20px;letter-spacing:-.01em;
}
.hero-sub{
  font-size:16px;color:var(--text-secondary);line-height:1.7;margin-bottom:32px;max-width:500px;
}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
.hero-scroll{
  text-align:center;margin-top:48px;color:var(--text-muted);
  font-size:13px;display:flex;flex-direction:column;align-items:center;gap:6px;
}
.hero-scroll .scroll-arrow{
  width:24px;height:40px;border:2px solid var(--text-muted);border-radius:12px;position:relative;
}
.hero-scroll .scroll-arrow::after{
  content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);
  width:4px;height:8px;background:var(--primary);border-radius:2px;
  animation:scrollBounce 1.6s infinite;
}
@keyframes scrollBounce{
  0%,100%{top:6px;opacity:1;}
  50%{top:14px;opacity:0.5;}
}

/* ===== Section common ===== */
.section{padding:90px 0;}
.section-head{text-align:center;margin-bottom:56px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--accent);
  background:rgba(23,126,137,0.08);padding:5px 14px;border-radius:16px;margin-bottom:14px;
  letter-spacing:.04em;
}
.section-head h2{
  font-size:30px;font-weight:700;color:var(--text);
  margin-bottom:16px;line-height:1.3;
}
.section-head h2:after{
  content:"";display:block;width:40px;height:4px;background:var(--primary);
  border-radius:2px;margin:14px auto 0;
}
.section-head .section-sub{
  color:var(--text-secondary);font-size:15px;max-width:640px;margin:12px auto 0;line-height:1.7;
}

/* ===== Feature metrics ===== */
.features{background:var(--bg);}
.metrics-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:48px;}
.metric-item{
  background:var(--card-bg);border-radius:var(--radius);padding:28px 24px;
  text-align:center;border:1px solid var(--border);box-shadow:var(--shadow);
  transition:transform var(--transition),box-shadow var(--transition);
}
.metric-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.metric-item .metric-num{font-size:34px;font-weight:800;color:var(--primary);line-height:1.2;}
.metric-item .metric-num span{font-size:18px;font-weight:600;color:var(--text-secondary);}
.metric-item .metric-label{font-size:14px;color:var(--text-secondary);margin-top:8px;}
.feature-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;align-items:start;}
.feature-card{
  background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);
  padding:36px 28px;box-shadow:var(--shadow);transition:transform var(--transition),box-shadow var(--transition);
}
.feature-card.tall{padding:48px 28px;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.feature-card .icon-wrap{
  width:52px;height:52px;border-radius:12px;background:rgba(43,106,143,0.10);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:22px;color:var(--primary);
}
.feature-card h3{font-size:19px;font-weight:600;color:var(--text);margin-bottom:12px;}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:0;}
.feature-card:nth-child(2){padding-top:28px;padding-bottom:28px;}
.feature-card:nth-child(2) .icon-wrap{background:rgba(23,126,137,0.10);color:var(--accent);}

/* ===== Demo ===== */
.demo{background:var(--bg-warm);}
.demo-scene{display:flex;align-items:center;gap:48px;margin-bottom:80px;}
.demo-scene:last-child{margin-bottom:0;}
.demo-scene.reverse{flex-direction:row-reverse;}
.demo-scene .demo-img-col{flex:1;position:relative;}
.demo-img-box{
  background:#fff;border-radius:16px;padding:14px;box-shadow:var(--shadow);
  transition:transform var(--transition),box-shadow var(--transition);position:relative;z-index:2;
}
.demo-img-box:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.demo-img-box img{border-radius:10px;width:100%;}
.demo-img-caption{font-size:13px;color:var(--text-muted);line-height:1.6;margin-top:10px;padding:0 6px;text-align:center;}
.demo-text-col{flex:1;padding:0 20px;}
.demo-text-col h3{font-size:26px;font-weight:700;color:var(--text);margin-bottom:16px;line-height:1.3;}
.demo-text-col h3:before{content:"";display:inline-block;width:40px;height:4px;background:var(--primary);border-radius:2px;margin-bottom:10px;margin-right:10px;}
.demo-text-col p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:20px;}
.demo-list{list-style:none;padding:0;}
.demo-list li{
  display:flex;align-items:flex-start;gap:10px;padding:8px 0;
  font-size:14px;color:var(--text);border-bottom:1px dashed var(--border);
}
.demo-list li:last-child{border-bottom:none;}
.demo-list li i{color:var(--accent);margin-top:3px;font-size:13px;}

/* ===== Evidence ===== */
.evidence{background:var(--bg);}
.evidence-tabs{
  display:flex;justify-content:center;gap:12px;margin-bottom:48px;flex-wrap:wrap;
}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 24px;border-radius:24px;background:var(--card-bg);
  border:1px solid var(--border);color:var(--text-secondary);font-size:14px;font-weight:500;
  cursor:pointer;transition:all var(--transition);
}
.tag-pill:hover{border-color:var(--primary);color:var(--primary);}
.tag-pill.active{background:var(--primary);color:#fff;border-color:var(--primary);}
.evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.evidence-card{
  background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);
  overflow:hidden;box-shadow:var(--shadow);transition:transform var(--transition),box-shadow var(--transition);
}
.evidence-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.evidence-card .ev-img{height:180px;overflow:hidden;}
.evidence-card .ev-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease;}
.evidence-card:hover .ev-img img{transform:scale(1.05);}
.evidence-card .ev-body{padding:24px;}
.evidence-card h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.evidence-card p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:0;}

/* ===== Pricing ===== */
.pricing{background:var(--bg-warm);}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.pricing-card{
  background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);
  padding:36px 28px;box-shadow:var(--shadow);position:relative;transition:transform var(--transition),box-shadow var(--transition);
}
.pricing-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.pricing-card.recommended{border:2px solid var(--cta);}
.pricing-card .plan-badge{
  position:absolute;top:-12px;right:20px;background:var(--cta);color:#fff;
  font-size:12px;font-weight:600;padding:4px 14px;border-radius:12px;
}
.pricing-card .plan-name{font-size:18px;font-weight:600;color:var(--text);margin-bottom:6px;}
.pricing-card .plan-desc{font-size:13px;color:var(--text-muted);margin-bottom:16px;}
.pricing-card .plan-price{font-size:36px;font-weight:800;color:var(--primary);margin-bottom:20px;}
.pricing-card .plan-price span{font-size:14px;font-weight:400;color:var(--text-muted);}
.pricing-card .plan-price .unit{font-size:16px;font-weight:500;}
.pricing-card .plan-features{list-style:none;padding:0;margin:0 0 24px;}
.pricing-card .plan-features li{
  display:flex;align-items:flex-start;gap:10px;padding:7px 0;
  font-size:14px;color:var(--text-secondary);border-bottom:1px dashed var(--border);
}
.pricing-card .plan-features li:last-child{border-bottom:none;}
.pricing-card .plan-features li i{color:var(--accent);font-size:12px;margin-top:5px;}
.pricing-card .btn{width:100%;}

/* ===== FAQ ===== */
.faq{background:var(--bg);}
.faq-accordion{max-width:768px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--border);border-radius:var(--radius) !important;margin-bottom:14px;
  background:var(--card-bg);overflow:hidden;transition:all var(--transition);
}
.accordion-item:has(.show){background:#F0F6FA;border-color:#d5e3eb;}
.accordion-button{
  font-size:16px;font-weight:600;color:var(--text);padding:20px 24px;
  background:transparent;box-shadow:none;border-radius:0 !important;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--primary);box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:var(--primary);}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";
  font-weight:900;width:20px;height:20px;display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:14px;transition:transform var(--transition);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--cta);}
.accordion-body{font-size:14px;line-height:1.7;color:var(--text-secondary);padding:0 24px 20px;}

/* ===== News ===== */
.news{background:var(--bg-warm);}
.news-card-vertical{
  background:var(--card-bg);border-radius:var(--radius);border:1px solid var(--border);
  box-shadow:var(--shadow);overflow:hidden;height:100%;transition:transform var(--transition),box-shadow var(--transition);
}
.news-card-vertical:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-card-vertical .card-img{height:230px;overflow:hidden;}
.news-card-vertical .card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease;}
.news-card-vertical:hover .card-img img{transform:scale(1.04);}
.news-card-vertical .card-body{padding:24px;}
.news-tag{
  display:inline-block;background:rgba(43,106,143,0.10);color:var(--primary);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:12px;margin-bottom:12px;
}
.news-card-vertical h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:12px;}
.news-card-vertical h3 a{color:var(--text);}
.news-card-vertical h3 a:hover{color:var(--primary);}
.news-card-vertical p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:14px;}
.news-date{font-size:13px;color:var(--text-muted);}
.news-card-horizontal{
  display:flex;gap:14px;background:var(--card-bg);border-radius:var(--radius);
  border:1px solid var(--border);box-shadow:var(--shadow);padding:14px;margin-bottom:14px;
  transition:transform var(--transition),box-shadow var(--transition);
}
.news-card-horizontal:last-child{margin-bottom:0;}
.news-card-horizontal:hover{transform:translateX(4px);box-shadow:var(--shadow-hover);}
.news-card-horizontal .thumb{width:92px;height:86px;flex-shrink:0;border-radius:8px;overflow:hidden;}
.news-card-horizontal .thumb img{width:100%;height:100%;object-fit:cover;}
.news-card-horizontal .info{flex:1;display:flex;flex-direction:column;justify-content:center;min-width:0;}
.news-card-horizontal .news-tag{font-size:11px;padding:3px 10px;margin-bottom:6px;}
.news-card-horizontal h3{
  font-size:15px;font-weight:600;line-height:1.45;margin-bottom:6px;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.news-card-horizontal h3 a{color:var(--text);}
.news-card-horizontal h3 a:hover{color:var(--primary);}
.news-card-horizontal .news-date{font-size:12px;}
.news-empty{
  background:var(--bg);border:1px dashed var(--border);border-radius:var(--radius);
  padding:60px 24px;text-align:center;color:var(--text-muted);
}
.news-empty i{font-size:40px;color:var(--border);margin-bottom:12px;}
.news-empty p{margin-bottom:4px;font-size:15px;color:var(--text-secondary);}

/* ===== CTA Section ===== */
.cta-section{background:var(--primary);position:relative;overflow:hidden;}
.cta-section:before{
  content:"";position:absolute;top:-80px;right:-80px;width:300px;height:300px;
  background:rgba(255,255,255,0.05);border-radius:50%;
}
.cta-section:after{
  content:"";position:absolute;bottom:-120px;left:-40px;width:260px;height:260px;
  background:rgba(255,255,255,0.04);border-radius:50%;
}
.cta-wrap{display:flex;align-items:center;gap:56px;position:relative;z-index:2;}
.cta-left{flex:1;}
.cta-left h2{color:#fff;font-size:30px;font-weight:700;margin-bottom:16px;line-height:1.3;}
.cta-left p{color:rgba(255,255,255,0.85);font-size:15px;line-height:1.8;margin-bottom:24px;max-width:460px;}
.cta-left .cta-contact{display:flex;flex-direction:column;gap:12px;}
.cta-left .cta-contact a{color:#fff;font-size:15px;display:flex;align-items:center;gap:10px;}
.cta-left .cta-contact a i{color:#ffb347;}
.cta-form-wrap{
  flex:1;background:#fff;border-radius:14px;padding:36px 32px;box-shadow:0 12px 40px rgba(0,0,0,0.15);
}
.cta-form-wrap h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.cta-form-wrap .form-sub{font-size:14px;color:var(--text-secondary);margin-bottom:24px;}
.form-label{font-size:14px;font-weight:500;color:var(--text);margin-bottom:6px;}
.form-control{
  border:1px solid #D8E2E8;border-radius:8px;padding:10px 14px;font-size:14px;
  transition:all var(--transition);background:#fbfdfe;
}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(43,106,143,0.12);background:#fff;}
.form-select{
  border:1px solid #D8E2E8;border-radius:8px;padding:10px 14px;font-size:14px;
  transition:all var(--transition);background:#fbfdfe;
}
.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(43,106,143,0.12);}
.form-notice{font-size:13px;color:var(--accent);margin-bottom:12px;display:none;}
.form-notice.error{color:#dc3545;}

/* ===== Footer ===== */
.site-footer{background:var(--card-bg);border-top:1px solid var(--border);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 0.8fr 0.8fr 1.2fr;gap:40px;padding-bottom:40px;}
.footer-brand .brand-logo{color:var(--text);font-size:20px;font-weight:700;display:inline-block;margin-bottom:14px;}
.footer-brand .brand-logo i{color:var(--cta);}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:16px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;border-radius:50%;background:var(--bg);
  display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;
  transition:all var(--transition);
}
.footer-social a:hover{background:var(--primary);color:#fff;}
.footer-col h4{font-size:16px;font-weight:600;margin-bottom:18px;color:var(--text);position:relative;padding-bottom:10px;}
.footer-col h4:after{content:"";position:absolute;left:0;bottom:0;width:32px;height:3px;background:var(--primary);border-radius:2px;}
.footer-col ul{list-style:none;padding:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-secondary);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-col ul li i{color:var(--accent);margin-right:8px;font-size:12px;width:16px;text-align:center;}
.footer-col .contact-list li a{display:flex;align-items:flex-start;gap:6px;}
.footer-bottom{
  border-top:1px solid var(--border);padding:20px 0;background:var(--primary-dark);
  color:rgba(255,255,255,0.7);font-size:13px;text-align:center;
}
.footer-bottom a{color:rgba(255,255,255,0.85);}

/* ===== Floating CTA ===== */
.float-cta{
  position:fixed;bottom:32px;right:32px;z-index:1080;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--cta);color:#fff;border-radius:32px;
  padding:14px 24px;font-size:15px;font-weight:600;
  box-shadow:0 6px 20px rgba(224,138,50,0.35);
  transition:all var(--transition);
}
.float-cta:hover{background:var(--cta-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 28px rgba(224,138,50,0.4);}
.float-cta i{font-size:16px;}

/* ===== Responsive ===== */
@media (max-width:991px){
  .topbar-inner{height:auto;padding:10px 0;flex-wrap:wrap;gap:10px;}
  .search-wrapper{flex:1;min-width:200px;order:2;}
  .hot-trends{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;gap:6px;}
  .nav-list{
    display:none;position:absolute;top:100%;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:8px 0;border-bottom:1px solid var(--border);
    box-shadow:0 8px 20px rgba(31,42,51,0.08);z-index:1000;
  }
  .nav-list.open{display:flex;}
  .nav-list > li{height:auto;border-bottom:1px solid #f2f5f7;}
  .nav-list > li > a{padding:14px 24px;height:auto;}
  .nav-list > li > a::after{display:none;}
  .nav-list > li.active > a{background:rgba(43,106,143,0.06);}
  .nav-cta{margin-left:0;padding:10px 24px;}
  .hero{padding:56px 0 40px;}
  .hero-row{flex-direction:column;min-height:auto;gap:32px;}
  .hero-left{max-width:100%;padding-left:0;}
  .hero-right{width:100%;}
  .hero-img-card{max-width:100%;}
  .metrics-row{grid-template-columns:repeat(2,1fr);}
  .feature-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .demo-scene,.demo-scene.reverse{flex-direction:column;gap:32px;}
  .demo-text-col{padding:0;}
  .evidence-grid{grid-template-columns:1fr 1fr;}
  .pricing-grid{grid-template-columns:1fr 1fr;}
  .cta-wrap{flex-direction:column;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:576px){
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .metrics-row{grid-template-columns:1fr 1fr;gap:14px;}
  .metric-item{padding:18px 14px;}
  .metric-item .metric-num{font-size:26px;}
  .feature-grid{grid-template-columns:1fr;gap:20px;}
  .feature-card.tall{padding:32px 24px;}
  .pricing-grid{grid-template-columns:1fr;gap:20px;}
  .evidence-grid{grid-template-columns:1fr;gap:20px;}
  .cta-form-wrap{padding:28px 20px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .hero-btns .btn{padding:11px 20px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .brand-logo{font-size:17px;}
  .search-wrapper input{font-size:13px;}
  .search-wrapper .search-btn{padding:5px 12px;font-size:12px;}
  .float-cta{
    width:48px;height:48px;border-radius:50%;padding:0;
    justify-content:center;bottom:20px;right:20px;
  }
  .float-cta span{display:none;}
  .float-cta i{font-size:18px;}
  .news-card-horizontal{flex-direction:row;}
  .news-card-horizontal .thumb{width:76px;height:72px;}
}

/* roulang page: category1 */
:root {
  --primary: #2B6A8F;
  --primary-dark: #1B4C6B;
  --accent: #177E89;
  --accent-light: #E6F3F4;
  --cta: #E08A32;
  --cta-dark: #C97623;
  --bg: #F5F8FA;
  --card-bg: #FFFFFF;
  --text: #1F2A33;
  --text-sec: #5B6B78;
  --text-light: #8FA0AC;
  --border: #E6EDF2;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 4px 20px rgba(31, 42, 51, 0.05);
  --shadow-md: 0 8px 30px rgba(31, 42, 51, 0.10);
  --space-section: 80px;
  --space-section-mobile: 48px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover {
  color: var(--primary-dark);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button,
input {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  padding-left: 20px;
  padding-right: 20px;
}

/* ---- Header / Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--card-bg);
  box-shadow: 0 2px 12px rgba(31, 42, 51, 0.06);
}
.topbar {
  background: var(--primary);
  color: #fff;
  height: 40px;
  display: flex;
  align-items: center;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}
.brand-logo i {
  color: #fff;
  font-size: 20px;
}
.topbar .brand-logo {
  font-size: 16px;
}
.search-wrapper {
  display: flex;
  align-items: center;
  flex: 0 1 380px;
  margin: 0 8px;
}
.search-wrapper input {
  width: 100%;
  height: 30px;
  border: none;
  border-radius: 6px 0 0 6px;
  padding: 0 14px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  outline: none;
}
.search-wrapper input::placeholder {
  color: var(--text-light);
}
.search-btn {
  height: 30px;
  border: none;
  border-radius: 0 6px 6px 0;
  padding: 0 14px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.25s ease;
}
.search-btn:hover {
  background: var(--primary-dark);
}
.hot-trends {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  white-space: nowrap;
}
.hot-label {
  color: #FFDFB8;
  font-weight: 600;
}
.mainnav {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: 14px;
  color: var(--primary);
  cursor: pointer;
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
}
.nav-list li a:hover {
  color: var(--accent);
  background: var(--accent-light);
}
.nav-list li.active a {
  color: var(--primary);
  background: rgba(43, 106, 143, 0.10);
  font-weight: 600;
}
@media (max-width: 991.98px) {
  .topbar-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 6px 0;
  }
  .search-wrapper {
    order: 3;
    flex: 1 1 100%;
    margin: 4px 0 0;
  }
  .hot-trends {
    display: none;
  }
}
@media (max-width: 767.98px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .nav-list {
    display: none;
    position: absolute;
    top: 96px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--card-bg);
    padding: 12px;
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--border);
  }
  .nav-list.show {
    display: flex;
  }
  .nav-list li {
    width: 100%;
  }
  .nav-list li a {
    padding: 12px 14px;
  }
}
@media (max-width: 575.98px) {
  .topbar .brand-logo {
    font-size: 15px;
  }
}

/* ---- Category Hero ---- */
.cat-hero {
  position: relative;
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 70px 0;
}
.cat-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.86);
}
.cat-hero .container {
  position: relative;
  z-index: 2;
}
.cat-hero h1 {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.cat-hero .lead-text {
  font-size: 16px;
  color: var(--text-sec);
  max-width: 640px;
  margin: 0 auto 22px;
}
.cat-hero .hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-theme {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-cta {
  background: var(--cta);
  color: #fff;
}
.btn-cta:hover {
  background: var(--cta-dark);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover {
  background: rgba(43, 106, 143, 0.08);
  color: var(--primary-dark);
}
.btn-theme:focus,
.btn-outline:focus,
.search-btn:focus {
  outline: 3px solid rgba(43, 106, 143, 0.25);
  outline-offset: 2px;
}

/* ---- Section base ---- */
.section {
  padding: 80px 0;
}
.section-alt {
  background: #FBFDFE;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}
.section-head h2::after {
  content: '';
  display: block;
  width: 40px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 12px auto 0;
}
.section-head p {
  color: var(--text-sec);
  font-size: 15px;
  max-width: 640px;
  margin: 14px auto 0;
}

/* ---- Intro ---- */
.intro-box {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 36px 40px;
  border-left: 4px solid var(--primary);
  margin-bottom: 24px;
}
.intro-box p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-sec);
  margin-bottom: 12px;
}
.intro-box p:last-child {
  margin-bottom: 0;
}
.intro-tip {
  background: var(--accent-light);
  border-radius: var(--radius);
  padding: 18px 24px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.intro-tip i {
  color: var(--accent);
  font-size: 20px;
  margin-top: 2px;
}
.intro-tip span {
  color: var(--text);
  font-size: 14px;
}

/* ---- Feature cards ---- */
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.feature-card .card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.feature-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.feature-card:hover .card-img img {
  transform: scale(1.03);
}
.feature-card .card-body {
  padding: 24px;
}
.feature-card .card-body h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.feature-card .card-body p {
  font-size: 14px;
  color: var(--text-sec);
  line-height: 1.75;
  margin-bottom: 14px;
}
.feature-card .card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s ease;
}
.feature-card .card-link:hover {
  gap: 10px;
  color: var(--primary-dark);
}

/* ---- Stats ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.stat-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat-item .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}
.stat-item .label {
  font-size: 14px;
  color: var(--text-sec);
  margin-top: 6px;
}

/* ---- Process ---- */
.process-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.process-step {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow-sm);
  position: relative;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 600;
  margin: 0 auto 16px;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: var(--text-sec);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---- FAQ ---- */
.faq-wrap {
  max-width: 768px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.faq-item.open {
  background: #F0F6FA;
  border-color: rgba(43, 106, 143, 0.30);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}
.faq-q .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(43, 106, 143, 0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--primary);
  transition: transform 0.25s ease, background 0.25s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  display: none;
  padding: 0 22px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sec);
}
.faq-a.show {
  display: block;
}
@media (max-width: 575.98px) {
  .faq-q {
    font-size: 15px;
    padding: 14px 16px;
  }
  .faq-a {
    padding: 0 16px 14px;
  }
}

/* ---- CTA ---- */
.cta-band {
  background: var(--primary);
  border-radius: var(--radius);
  padding: 48px 40px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}
.cta-band h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}
.cta-band p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
}
.cta-band .btn-cta {
  background: #fff;
  color: var(--primary);
  margin-right: 8px;
}
.cta-band .btn-cta:hover {
  background: #F0F4F7;
  color: var(--primary-dark);
}
.cta-band .btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}
.cta-band .btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .brand-logo {
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 14px;
}
.footer-brand .brand-logo i {
  color: var(--primary);
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-sec);
  margin-bottom: 18px;
  max-width: 320px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(43, 106, 143, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 15px;
  transition: all 0.25s ease;
}
.footer-social a:hover {
  background: var(--primary);
  color: #fff;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-sec);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.footer-col ul li a i {
  font-size: 12px;
  color: var(--primary);
}
.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.contact-list li a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.footer-bottom {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  padding: 16px 0;
  text-align: center;
}
@media (max-width: 991.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 575.98px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* ---- Floating CTA ---- */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1040;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--cta);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(224, 138, 50, 0.35);
  cursor: pointer;
  transition: all 0.25s ease;
}
.float-cta:hover {
  background: var(--cta-dark);
  color: #fff;
  transform: translateY(-2px);
}
.float-cta i {
  font-size: 16px;
}
@media (max-width: 575.98px) {
  .float-cta {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    padding: 0;
    justify-content: center;
    right: 16px;
    bottom: 16px;
  }
  .float-cta .cta-text {
    display: none;
  }
}

/* ---- Responsive ---- */
@media (max-width: 991.98px) {
  .section {
    padding: 60px 0;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 767.98px) {
  .section {
    padding: 48px 0;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .cat-hero {
    min-height: 34vh;
    padding: 48px 0;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .process-wrap {
    grid-template-columns: 1fr;
  }
  .intro-box {
    padding: 24px;
  }
}

/* roulang page: article */
:root {
  --primary: #2B6A8F;
  --primary-dark: #1B4C6B;
  --accent: #177E89;
  --accent-soft: #F0F6FA;
  --bg: #F5F8FA;
  --bg-warm: #FBFDFE;
  --card-bg: #FFFFFF;
  --text-main: #1F2A33;
  --text-secondary: #5B6B78;
  --text-muted: #8FA0AC;
  --cta: #E08A32;
  --cta-dark: #C7711F;
  --border: #E6EDF2;
  --input-border: #D8E2E8;
  --radius: 10px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow-card: 0 4px 20px rgba(31,42,51,0.05);
  --shadow-hover: 0 8px 30px rgba(31,42,51,0.10);
  --transition: 0.25s ease;
  --font-main: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text-main);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-dark);
}

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

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

/* ===== 顶部导航 ===== */
.site-header {
  position: relative;
  background: var(--primary);
  z-index: 1000;
}
.topbar {
  background: var(--primary);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  gap: 20px;
  flex-wrap: wrap;
}
.brand-logo {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.brand-logo i {
  color: #ffffff;
  font-size: 22px;
}
.brand-logo:hover {
  color: #ffffff;
  opacity: 0.9;
}
.search-wrapper {
  flex: 1;
  max-width: 460px;
  display: flex;
  background: rgba(255,255,255,0.14);
  border-radius: var(--radius-xs) 0 0 var(--radius-xs);
  overflow: hidden;
}
.search-wrapper input {
  border: none;
  background: transparent;
  padding: 8px 14px;
  color: #ffffff;
  font-size: 13px;
  flex: 1;
  outline: none;
}
.search-wrapper input::placeholder {
  color: rgba(255,255,255,0.65);
}
.search-wrapper .search-btn {
  background: #ffffff;
  border: none;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  cursor: pointer;
  transition: background 0.2s ease;
}
.search-wrapper .search-btn:hover {
  background: var(--accent);
  color: #ffffff;
}
.hot-trends {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  white-space: nowrap;
}
.hot-trends .hot-label {
  color: var(--cta);
  font-weight: 600;
}

.mainnav {
  background: var(--primary);
}
.mainnav .container {
  display: flex;
  align-items: center;
}
.nav-inner {
  display: flex;
  align-items: center;
  width: 100%;
  position: relative;
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: #ffffff;
  border-radius: var(--radius-xs);
  padding: 6px 14px;
  font-size: 14px;
  cursor: pointer;
  align-items: center;
  gap: 8px;
}
.nav-toggle:hover {
  background: rgba(255,255,255,0.1);
}
.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}
.nav-list li a {
  display: flex;
  align-items: center;
  padding: 14px 22px;
  color: rgba(255,255,255,0.88);
  font-size: 15px;
  font-weight: 500;
  border-bottom: 3px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.nav-list li a:hover {
  background: rgba(255,255,255,0.08);
  color: #ffffff;
}
.nav-list li.active a {
  color: #ffffff;
  border-bottom-color: var(--cta);
  background: rgba(255,255,255,0.06);
}

/* ===== 面包屑 ===== */
.article-breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 4px;
}
.article-breadcrumb a {
  color: rgba(255,255,255,0.85);
}
.article-breadcrumb a:hover {
  color: #ffffff;
}
.article-breadcrumb i {
  font-size: 10px;
  margin: 0 8px;
  color: rgba(255,255,255,0.4);
}

/* ===== 文章Hero ===== */
.article-hero {
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 72px 0 64px;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27,76,107,0.90), rgba(43,106,143,0.72));
  z-index: 1;
}
.article-hero .container {
  position: relative;
  z-index: 2;
}
.article-hero h1 {
  color: #ffffff;
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.35;
  margin: 16px 0 16px;
  max-width: 780px;
}
.article-hero-meta {
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.article-hero-meta i {
  margin-right: 5px;
  color: rgba(255,255,255,0.6);
}
.hero-extra {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: #ffffff;
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-top: 12px;
  backdrop-filter: blur(2px);
}

/* ===== 文章主体 ===== */
.article-section {
  padding: 64px 0 40px;
}
.article-main-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 40px 44px;
}
.article-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-main);
}
.article-content p {
  margin-bottom: 28px;
  line-height: 1.8;
  max-width: 38em;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 44px 0 20px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  max-width: 38em;
}
.article-content h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--primary-dark);
  margin: 32px 0 16px;
  max-width: 38em;
}
.article-content blockquote {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
  color: var(--text-secondary);
  font-size: 15px;
}
.article-content ul,
.article-content ol {
  padding-left: 22px;
  margin-bottom: 28px;
  max-width: 38em;
}
.article-content li {
  margin-bottom: 8px;
  line-height: 1.7;
}
.article-content table {
  width: 100%;
  margin: 28px 0;
  border-collapse: collapse;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content table th {
  background: var(--accent-soft);
  font-weight: 600;
  color: var(--primary-dark);
}
.article-content img {
  max-width: 100%;
  border-radius: var(--radius);
  display: block;
  margin: 28px auto;
  box-shadow: var(--shadow-card);
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover {
  color: var(--accent);
}

.article-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 16px;
}
.article-footer-nav .btn {
  padding: 10px 22px;
  font-size: 14px;
}

/* ===== 按钮 ===== */
.btn {
  border-radius: var(--radius-xs);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 24px;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}
.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #ffffff;
  border-color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus,
.btn-outline-primary:focus,
.btn-cta:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(43,106,143,0.25);
}
.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline-primary:hover {
  background: var(--accent-soft);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}
.btn-cta {
  background: var(--cta);
  color: #ffffff;
  border-color: var(--cta);
}
.btn-cta:hover {
  background: var(--cta-dark);
  color: #ffffff;
  border-color: var(--cta-dark);
  transform: translateY(-2px);
}
.btn-cta:active {
  transform: translateY(0);
}

/* ===== 侧栏 ===== */
.article-sidebar {
  position: sticky;
  top: 90px;
}
.sidebar-widget {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 28px;
  margin-bottom: 24px;
}
.sidebar-widget h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  position: relative;
}
.sidebar-widget h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 40px;
  height: 2px;
  background: var(--primary);
}
.widget-info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.widget-info-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
}
.widget-info-list li:last-child {
  border-bottom: none;
}
.widget-info-list li i {
  color: var(--primary);
  width: 18px;
  text-align: center;
  font-size: 14px;
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.related-item {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}
.related-item:hover {
  background: var(--accent-soft);
}
.related-thumb {
  width: 68px;
  height: 52px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}
.related-meta h4 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-meta h4:hover {
  color: var(--primary);
}
.related-date {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 48px 0 64px;
  background: var(--bg-warm);
}
.section-header {
  text-align: center;
  margin-bottom: 40px;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
  position: relative;
  display: inline-block;
}
.section-header h2::after {
  content: '';
  display: block;
  width: 40px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 12px auto 0;
}
.section-header .section-sub {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
}
.related-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-card-img {
  position: relative;
  overflow: hidden;
  height: 180px;
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-card-img img {
  transform: scale(1.05);
}
.related-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: #ffffff;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 500;
}
.related-card-body {
  padding: 18px 20px;
}
.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.45;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body h3 a {
  color: inherit;
}
.related-card-body h3 a:hover {
  color: var(--primary);
}
.related-card-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.related-card-meta a {
  color: var(--primary);
  font-weight: 500;
  font-size: 13px;
}
.related-card-meta a i {
  transition: transform 0.2s ease;
}
.related-card-meta a:hover i {
  transform: translateX(4px);
}

/* ===== CTA区 ===== */
.cta-section {
  padding: 64px 0;
  background: var(--primary-dark);
  color: #ffffff;
  text-align: center;
}
.cta-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
}
.cta-section p {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  max-width: 620px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-actions .btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.6);
  color: #ffffff;
}
.cta-actions .btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: #ffffff;
}

/* ===== 空态 ===== */
.page-empty {
  padding: 120px 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
}
.empty-box {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 60px 40px;
  max-width: 480px;
  margin: 0 auto;
}
.empty-box i {
  font-size: 48px;
  color: var(--border);
  margin-bottom: 20px;
  display: block;
}
.empty-box h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.empty-box p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 56px 0 36px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 320px;
}
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: all 0.2s ease;
}
.footer-social a:hover {
  background: var(--primary);
  color: #ffffff;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.footer-col ul li a i {
  font-size: 12px;
  color: var(--accent);
}
.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.contact-list li a {
  gap: 8px;
}
.contact-list li a i {
  color: var(--primary);
  font-size: 14px;
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .topbar-inner {
    flex-wrap: wrap;
  }
  .search-wrapper {
    order: 3;
    max-width: 100%;
    flex: 0 0 100%;
  }
  .hot-trends {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-list {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--primary-dark);
    border-top: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    padding: 8px 0;
  }
  .nav-list.open {
    display: flex;
  }
  .nav-list li a {
    padding: 12px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    border-left: 3px solid transparent;
  }
  .nav-list li.active a {
    border-bottom-color: transparent;
    border-left-color: var(--cta);
  }
  .article-section {
    padding: 40px 0 32px;
  }
  .article-main-card {
    padding: 24px 20px;
  }
  .article-sidebar {
    position: static;
    margin-top: 24px;
  }
  .related-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .article-hero {
    padding: 48px 0 40px;
  }
}

@media (max-width: 767px) {
  .article-hero {
    padding: 36px 0 32px;
  }
  .article-hero h1 {
    font-size: 24px;
  }
  .article-hero-meta {
    font-size: 13px;
    gap: 14px;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 575px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .topbar-inner {
    gap: 8px;
  }
  .brand-logo {
    font-size: 17px;
  }
  .search-wrapper {
    flex: 0 0 100%;
  }
  .related-cards {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 0 28px;
  }
  .article-main-card {
    padding: 18px 14px;
  }
  .article-content h2 {
    font-size: 20px;
  }
  .article-footer-nav {
    flex-direction: column;
    align-items: stretch;
  }
  .article-footer-nav .btn {
    width: 100%;
    justify-content: center;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
    padding: 0 24px;
  }
  .cta-actions .btn {
    margin-bottom: 12px;
  }
  .article-hero-meta {
    flex-direction: column;
    gap: 8px;
  }
}

/* roulang page: category2 */
:root{
  --primary:#2B6A8F;
  --primary-dark:#1B4C6B;
  --accent:#177E89;
  --accent-light:#E8F3F5;
  --bg-page:#F5F8FA;
  --bg-card:#FFFFFF;
  --bg-soft:#FBFDFE;
  --text-main:#1F2A33;
  --text-secondary:#5B6B78;
  --text-muted:#8FA0AC;
  --border:#E6EDF2;
  --cta:#E08A32;
  --cta-hover:#C97423;
  --radius-card:10px;
  --radius-input:8px;
  --radius-btn:6px;
  --shadow-card:0 4px 20px rgba(31,42,51,0.05);
  --shadow-hover:0 8px 30px rgba(31,42,51,0.10);
  --space-section:80px;
  --font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",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:1.8;
  color:var(--text-main);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
section{position:relative;}

/* ===== Header ===== */
.site-header{position:relative;z-index:1000;}
.topbar{
  background:var(--bg-card);
  border-bottom:1px solid var(--border);
  transition:all .3s ease;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:40px;
  padding:6px 0;
  flex-wrap:wrap;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:17px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.5px;
  white-space:nowrap;
}
.brand-logo i{
  font-size:18px;
  color:var(--accent);
}
.search-wrapper{
  display:flex;
  align-items:center;
  background:var(--bg-page);
  border:1px solid #D8E2E8;
  border-radius:var(--radius-input);
  overflow:hidden;
  height:32px;
  max-width:340px;
  width:100%;
  transition:border-color .2s,box-shadow .2s;
}
.search-wrapper:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(43,106,143,.12);
}
.search-wrapper input{
  flex:1;
  border:none;
  background:transparent;
  padding:0 12px;
  font-size:13px;
  color:var(--text-main);
  outline:none;
  height:100%;
}
.search-wrapper input::placeholder{color:var(--text-muted);}
.search-wrapper .search-btn{
  border:none;
  background:var(--primary);
  color:#fff;
  height:100%;
  padding:0 16px;
  font-size:13px;
  font-weight:600;
  transition:background .2s;
}
.search-wrapper .search-btn:hover{background:var(--primary-dark);}
.hot-trends{
  font-size:13px;
  color:var(--text-secondary);
  white-space:nowrap;
}
.hot-trends .hot-label{
  color:var(--cta);
  font-weight:600;
}
.mainnav{
  background:var(--primary);
  box-shadow:0 2px 12px rgba(27,76,107,.15);
  transition:box-shadow .3s;
}
.mainnav .nav-inner{
  display:flex;
  align-items:center;
  min-height:56px;
}
.nav-list{
  display:flex;
  align-items:center;
  list-style:none;
  gap:0;
  margin:0;
  padding:0;
}
.nav-list li{
  position:relative;
}
.nav-list li a{
  display:block;
  padding:0 20px;
  line-height:56px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.85);
  transition:color .2s,background .2s;
  white-space:nowrap;
}
.nav-list li a:hover{
  color:#fff;
  background:rgba(255,255,255,.08);
}
.nav-list li.active a{
  color:#fff;
  font-weight:600;
}
.nav-list li.active::after{
  content:'';
  position:absolute;
  bottom:0;
  left:20px;
  right:20px;
  height:3px;
  background:var(--cta);
  border-radius:2px 2px 0 0;
}
.nav-toggle{
  display:none;
  background:transparent;
  border:1px solid rgba(255,255,255,.5);
  color:#fff;
  border-radius:var(--radius-btn);
  padding:6px 14px;
  font-size:14px;
  transition:background .2s,border-color .2s;
}
.nav-toggle:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
}
body.nav-scrolled .topbar{
  display:none;
}
body.nav-scrolled .mainnav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  box-shadow:0 4px 20px rgba(27,76,107,.25);
}

/* ===== Category Hero ===== */
.category-hero{
  min-height:40vh;
  background:
    linear-gradient(rgba(255,255,255,.82),rgba(255,255,255,.88)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  display:flex;
  align-items:center;
  padding:56px 0 48px;
  border-bottom:1px solid var(--border);
}
.category-hero .hero-content{
  text-align:center;
  max-width:760px;
  margin:0 auto;
  padding:0 20px;
}
.category-hero h1{
  font-size:clamp(28px,3vw,40px);
  font-weight:700;
  color:var(--text-main);
  line-height:1.3;
  margin-bottom:16px;
}
.category-hero .hero-line{
  width:40px;
  height:4px;
  background:var(--primary);
  border-radius:2px;
  margin:0 auto 18px;
}
.category-hero p{
  font-size:16px;
  color:var(--text-secondary);
  line-height:1.8;
  max-width:620px;
  margin:0 auto;
}

/* ===== Intro & Stats ===== */
.intro-band{
  padding:var(--space-section) 0;
  background:var(--bg-card);
}
.intro-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:48px;
  align-items:center;
}
.intro-copy .section-label{
  display:inline-block;
  background:var(--accent-light);
  color:var(--accent);
  font-size:13px;
  font-weight:600;
  padding:4px 14px;
  border-radius:20px;
  margin-bottom:16px;
}
.intro-copy h2{
  font-size:26px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:18px;
  line-height:1.4;
}
.intro-copy h2::after{
  content:'';
  display:block;
  width:40px;
  height:4px;
  background:var(--primary);
  border-radius:2px;
  margin-top:12px;
}
.intro-copy p{
  color:var(--text-secondary);
  font-size:15px;
  line-height:1.9;
  margin-bottom:12px;
}
.stats-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.stat-card{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:24px 20px;
  text-align:center;
  transition:box-shadow .25s,transform .25s;
}
.stat-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.stat-card .stat-num{
  font-size:34px;
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
}
.stat-card .stat-label{
  font-size:14px;
  color:var(--text-muted);
  margin-top:6px;
}

/* ===== Plans Section ===== */
.plans-section{
  padding:var(--space-section) 0;
  background:var(--bg-page);
}
.section-head{
  text-align:center;
  max-width:640px;
  margin:0 auto 48px;
}
.section-head .section-label{
  display:inline-block;
  background:var(--accent-light);
  color:var(--accent);
  font-size:13px;
  font-weight:600;
  padding:4px 14px;
  border-radius:20px;
  margin-bottom:14px;
}
.section-head h2{
  font-size:28px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:14px;
}
.section-head h2::after{
  content:'';
  display:block;
  width:40px;
  height:4px;
  background:var(--primary);
  border-radius:2px;
  margin:14px auto 0;
}
.section-head p{
  color:var(--text-secondary);
  font-size:15px;
  line-height:1.8;
  margin-top:14px;
}
.plan-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.plan-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:box-shadow .25s,transform .25s;
  position:relative;
}
.plan-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.plan-card.recommended{
  border:2px solid var(--accent);
  box-shadow:0 4px 24px rgba(23,126,137,.12);
}
.plan-card .card-img{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-soft);
}
.plan-card .card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.plan-card:hover .card-img img{
  transform:scale(1.04);
}
.plan-card .badge-flag{
  position:absolute;
  top:12px;
  right:12px;
  background:var(--accent);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:3px 12px;
  border-radius:20px;
  box-shadow:0 2px 8px rgba(23,126,137,.3);
}
.plan-card .card-body{
  padding:24px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.plan-card .plan-name{
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:6px;
}
.plan-card .plan-price{
  font-size:15px;
  color:var(--text-secondary);
  margin-bottom:16px;
}
.plan-card .plan-price strong{
  font-size:24px;
  color:var(--primary);
  font-weight:700;
}
.plan-card .plan-features{
  list-style:none;
  padding:0;
  margin:0 0 20px;
  flex:1;
}
.plan-card .plan-features li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:14px;
  color:var(--text-main);
  padding:6px 0;
  line-height:1.6;
}
.plan-card .plan-features li i{
  color:var(--accent);
  margin-top:3px;
  font-size:13px;
  flex-shrink:0;
}
.plan-card .btn-plan{
  display:inline-block;
  text-align:center;
  background:var(--primary);
  color:#fff;
  border:none;
  border-radius:var(--radius-btn);
  padding:10px 24px;
  font-size:14px;
  font-weight:600;
  transition:background .2s,transform .1s,box-shadow .2s;
}
.plan-card .btn-plan:hover{
  background:var(--primary-dark);
  box-shadow:0 4px 12px rgba(27,76,107,.25);
}
.plan-card .btn-plan:active{
  transform:translateY(2px);
}
.plan-card .btn-plan:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.plan-card.recommended .btn-plan{
  background:var(--cta);
}
.plan-card.recommended .btn-plan:hover{
  background:var(--cta-hover);
}

/* ===== Process Section ===== */
.process-section{
  padding:var(--space-section) 0;
  background:var(--bg-soft);
}
.process-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:8px;
}
.process-step{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:32px 24px;
  text-align:center;
  position:relative;
  transition:box-shadow .25s,transform .25s;
}
.process-step:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
.process-step .step-icon{
  width:56px;
  height:56px;
  border-radius:50%;
  background:var(--accent-light);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  margin:0 auto 16px;
}
.process-step .step-num{
  position:absolute;
  top:12px;
  left:12px;
  font-size:12px;
  font-weight:700;
  color:var(--text-muted);
  background:var(--bg-page);
  padding:2px 10px;
  border-radius:12px;
}
.process-step h3{
  font-size:17px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:8px;
}
.process-step p{
  font-size:13px;
  color:var(--text-secondary);
  line-height:1.6;
}

/* ===== FAQ Section ===== */
.faq-section{
  padding:var(--space-section) 0;
  background:var(--bg-card);
}
.faq-wrap{
  max-width:768px;
  margin:0 auto;
}
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:background .25s,box-shadow .25s;
}
.faq-item.active{
  background:#F0F6FA;
  box-shadow:var(--shadow-card);
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 24px;
  cursor:pointer;
  user-select:none;
}
.faq-question .q-text{
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  line-height:1.5;
}
.faq-question .q-icon{
  width:28px;
  height:28px;
  border-radius:50%;
  background:var(--accent-light);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  flex-shrink:0;
  transition:transform .25s ease,background .25s;
}
.faq-item.active .q-icon{
  transform:rotate(45deg);
  background:var(--accent);
  color:#fff;
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-answer .a-inner{
  padding:0 24px 20px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-secondary);
  border-top:1px solid rgba(43,106,143,.08);
  padding-top:14px;
  margin:0 24px 0;
}

/* ===== CTA Section ===== */
.cta-section{
  padding:var(--space-section) 0;
  background:
    linear-gradient(rgba(27,76,107,.92),rgba(27,76,107,.96)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#fff;
}
.cta-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.cta-copy h2{
  font-size:28px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  line-height:1.4;
}
.cta-copy p{
  color:rgba(255,255,255,.85);
  font-size:15px;
  line-height:1.9;
  margin-bottom:20px;
}
.cta-copy .contact-row{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:18px;
  font-weight:600;
  color:#fff;
}
.cta-copy .contact-row i{
  color:var(--cta);
}
.cta-form-wrap{
  background:var(--bg-card);
  border-radius:var(--radius-card);
  padding:32px;
  box-shadow:0 8px 40px rgba(0,0,0,.2);
}
.cta-form-wrap h3{
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.cta-form-wrap .form-sub{
  font-size:14px;
  color:var(--text-muted);
  margin-bottom:20px;
}
.cta-form-wrap .form-label{
  font-size:14px;
  font-weight:500;
  color:var(--text-main);
  margin-bottom:6px;
}
.cta-form-wrap .form-control{
  border:1px solid #D8E2E8;
  border-radius:var(--radius-input);
  padding:10px 14px;
  font-size:14px;
  color:var(--text-main);
  background:var(--bg-soft);
  transition:border-color .2s,box-shadow .2s;
}
.cta-form-wrap .form-control:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(43,106,143,.12);
  background:var(--bg-card);
}
.cta-form-wrap textarea.form-control{
  resize:vertical;
  min-height:90px;
}
.cta-form-wrap .btn-cta{
  width:100%;
  background:var(--cta);
  color:#fff;
  border:none;
  border-radius:var(--radius-btn);
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  transition:background .2s,transform .1s,box-shadow .2s;
}
.cta-form-wrap .btn-cta:hover{
  background:var(--cta-hover);
  box-shadow:0 4px 16px rgba(224,138,50,.3);
}
.cta-form-wrap .btn-cta:active{
  transform:translateY(2px);
}
.cta-form-wrap .btn-cta:focus-visible{
  outline:2px solid var(--cta);
  outline-offset:2px;
}
.form-tip{
  font-size:13px;
  color:var(--text-muted);
  text-align:center;
  margin-top:12px;
}

/* ===== Floating CTA ===== */
.float-cta{
  position:fixed;
  bottom:32px;
  right:32px;
  z-index:999;
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--cta);
  color:#fff;
  border:none;
  border-radius:50px;
  padding:12px 22px;
  font-size:14px;
  font-weight:600;
  box-shadow:0 6px 20px rgba(224,138,50,.3);
  transition:background .2s,transform .2s,box-shadow .2s;
}
.float-cta:hover{
  background:var(--cta-hover);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(224,138,50,.4);
}
.float-cta i{
  font-size:15px;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--bg-card);
  border-top:1px solid var(--border);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding:60px 0 40px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.8;
  margin:14px 0 18px;
  max-width:280px;
}
.footer-social{
  display:flex;
  gap:10px;
}
.footer-social a{
  width:36px;
  height:36px;
  border-radius:50%;
  background:var(--bg-page);
  color:var(--text-secondary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  border:1px solid var(--border);
  transition:background .2s,color .2s,border-color .2s;
}
.footer-social a:hover{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}
.footer-col h4{
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:16px;
}
.footer-col ul{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-col ul li{
  margin-bottom:10px;
}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-secondary);
  transition:color .2s,padding-left .2s;
}
.footer-col ul li a i{
  margin-right:6px;
  font-size:12px;
  color:var(--text-muted);
  transition:color .2s;
}
.footer-col ul li a:hover{
  color:var(--primary);
  padding-left:4px;
}
.footer-col ul li a:hover i{
  color:var(--primary);
}
.contact-list li a{
  display:flex;
  align-items:center;
  gap:8px;
}
.contact-list li a i{
  width:16px;
  text-align:center;
  margin-right:0;
}
.footer-bottom{
  background:var(--bg-page);
  border-top:1px solid var(--border);
  padding:18px 0;
  font-size:13px;
  color:var(--text-muted);
  text-align:center;
}

/* ===== Responsive ===== */
@media (max-width:991px){
  .plan-cards{grid-template-columns:repeat(2,1fr);}
  .process-steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .category-hero{min-height:30vh;}
  .topbar-inner{flex-wrap:wrap;gap:10px;}
  .search-wrapper{max-width:100%;}
}
@media (max-width:767px){
  .nav-toggle{display:inline-flex;align-items:center;gap:6px;}
  .nav-list{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:var(--primary);
    flex-direction:column;
    padding:8px 0;
    box-shadow:0 8px 24px rgba(27,76,107,.3);
  }
  .nav-list.open{display:flex;}
  .nav-list li a{
    line-height:44px;
    padding:0 24px;
  }
  .nav-list li.active::after{
    left:24px;
    right:auto;
    width:40px;
  }
  .hot-trends{display:none;}
  .search-wrapper{height:30px;}
  :root{--space-section:48px;}
  .plan-cards{grid-template-columns:1fr;}
  .process-steps{grid-template-columns:1fr;gap:16px;}
  .stats-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:40px 0 24px;}
  .float-cta{
    width:48px;
    height:48px;
    border-radius:50%;
    padding:0;
    justify-content:center;
    bottom:20px;
    right:20px;
  }
  .float-cta span{display:none;}
  .cta-form-wrap{padding:24px;}
  .faq-question .q-text{font-size:15px;}
}
@media (max-width:520px){
  .brand-logo{font-size:15px;}
  .brand-logo i{font-size:16px;}
  .search-wrapper .search-btn{padding:0 12px;font-size:12px;}
  .stat-card .stat-num{font-size:26px;}
  .stat-card .stat-label{font-size:13px;}
  .section-head h2{font-size:22px;}
  .plan-card .card-body{padding:20px;}
  .float-cta{bottom:16px;right:16px;}
}

/* roulang page: category3 */
:root {
            --primary: #2B6A8F;
            --primary-dark: #1B4C6B;
            --accent: #177E89;
            --accent-soft: #E3F0F2;
            --orange: #E08A32;
            --bg: #F5F8FA;
            --bg-warm: #FBFDFE;
            --card-bg: #FFFFFF;
            --text-main: #1F2A33;
            --text-secondary: #5B6B78;
            --text-muted: #8FA0AC;
            --border: #E6EDF2;
            --radius-card: 10px;
            --radius-input: 8px;
            --radius-btn: 6px;
            --shadow-card: 0 4px 20px rgba(31, 42, 51, 0.05);
            --shadow-hover: 0 8px 30px rgba(31, 42, 51, 0.10);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-card);
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Buttons */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.5;
        }

        .btn-custom:focus-visible {
            outline: 2px solid rgba(43, 106, 143, 0.4);
            outline-offset: 2px;
        }

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

        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(27, 76, 107, 0.25);
        }

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

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

        .btn-outline-custom:hover {
            background-color: rgba(43, 106, 143, 0.08);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

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

        .btn-accent-custom {
            background-color: var(--orange);
            color: #fff;
            border-color: var(--orange);
        }

        .btn-accent-custom:hover {
            background-color: #cc7528;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(224, 138, 50, 0.25);
        }

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

        /* Header */
        .site-header {
            background: #fff;
            box-shadow: 0 1px 0 var(--border);
        }

        .topbar {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 48px;
            gap: 24px;
        }

        .brand-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

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

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

        .search-wrapper {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 2px 4px 2px 16px;
            max-width: 320px;
            flex: 1;
            transition: var(--transition);
        }

        .search-wrapper:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(43, 106, 143, 0.10);
        }

        .search-wrapper input {
            border: none;
            background: transparent;
            font-size: 13px;
            color: var(--text-main);
            width: 100%;
            padding: 6px 8px;
            outline: none;
        }

        .search-wrapper input::placeholder {
            color: var(--text-muted);
            font-size: 13px;
        }

        .search-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 16px;
            padding: 5px 18px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .hot-trends {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hot-label {
            color: var(--orange);
            font-weight: 600;
        }

        /* Nav */
        .mainnav {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            height: 56px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 6px 14px;
            font-size: 14px;
            color: var(--text-main);
            cursor: pointer;
        }

        .nav-list {
            display: flex;
            list-style: none;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            width: 100%;
        }

        .nav-list li {
            margin: 0;
        }

        .nav-list li a {
            display: block;
            padding: 8px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            white-space: nowrap;
            transition: var(--transition);
        }

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

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

        .sticky-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(31, 42, 51, 0.08);
        }

        .sticky-header .topbar {
            display: none;
        }

        /* Cat Hero */
        .cat-hero {
            background: linear-gradient(rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.94)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            min-height: 40vh;
            display: flex;
            align-items: center;
            padding: 80px 0;
            position: relative;
        }

        .cat-hero-content {
            max-width: 780px;
        }

        .cat-hero .tag-badge {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .cat-hero h1 {
            font-size: clamp(28px, 3vw, 42px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .cat-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 640px;
        }

        /* Section */
        .page-section {
            padding: 80px 0;
        }

        .page-section.bg-white {
            background: #fff;
        }

        .page-section.bg-warm {
            background: var(--bg-warm);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 40px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin-top: 12px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 600px;
        }

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

        .stat-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

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

        .content-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .content-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--accent-soft);
        }

        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.6s ease;
        }

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

        .content-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(31, 42, 51, 0.12), transparent);
            border-radius: 0;
        }

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

        .card-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .content-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

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

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            margin-top: 16px;
            transition: var(--transition);
        }

        .card-link i {
            transition: transform 0.3s ease;
        }

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

        .card-link:hover i {
            transform: translateX(4px);
        }

        /* Service section */
        .service-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .service-img-wrap {
            position: relative;
        }

        .service-img-wrap img {
            width: 100%;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .service-img-wrap::before {
            content: '';
            position: absolute;
            inset: -12px auto auto -12px;
            width: 40%;
            height: 40%;
            background: var(--accent-soft);
            border-radius: var(--radius-card);
            z-index: -1;
        }

        .service-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
        }

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

        .service-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .service-list .icon-wrap {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: var(--accent-soft);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
        }

        .service-list .list-text strong {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            display: block;
            margin-bottom: 4px;
        }

        .service-list .list-text span {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 768px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            background: #F0F6FA;
            border-color: rgba(43, 106, 143, 0.20);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 24px;
            background: transparent;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question:focus-visible {
            outline: 2px solid rgba(43, 106, 143, 0.3);
            outline-offset: -2px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent);
            transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
        }

        .faq-item.open .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(135deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 600px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin: 0;
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-warm);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: var(--accent-soft);
            border-radius: 50%;
        }

        .cta-card {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            position: relative;
            z-index: 1;
        }

        .cta-card h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .cta-card p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

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

        /* Footer */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: block;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            transition: var(--transition);
            border: 1px solid var(--border);
        }

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

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

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-col ul a i {
            font-size: 12px;
            color: var(--text-muted);
            transition: var(--transition);
        }

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

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

        .contact-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .contact-list a i {
            width: 20px;
            text-align: center;
            color: var(--primary);
        }

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

        /* Floating CTA */
        .floating-cta {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--orange);
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(224, 138, 50, 0.3);
            transition: var(--transition);
        }

        .floating-cta:hover {
            background: #cc7528;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(224, 138, 50, 0.4);
        }

        .floating-cta:focus-visible {
            outline: 2px solid rgba(224, 138, 50, 0.4);
            outline-offset: 2px;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .service-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

            .topbar-inner {
                gap: 12px;
            }

            .search-wrapper {
                max-width: 240px;
            }

            .cat-hero {
                min-height: 30vh;
            }
        }

        @media (max-width: 767px) {
            .page-section {
                padding: 48px 0;
            }

            .topbar-inner {
                height: 44px;
            }

            .search-wrapper,
            .hot-trends {
                display: none;
            }

            .brand-logo {
                font-size: 18px;
                margin: 0 auto;
            }

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

            .nav-list {
                display: none;
                flex-direction: column;
                background: #fff;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                border-bottom: 1px solid var(--border);
                padding: 8px 0;
                box-shadow: 0 8px 20px rgba(31, 42, 51, 0.08);
            }

            .nav-list.open {
                display: flex;
            }

            .nav-list li a {
                padding: 12px 24px;
                border-radius: 0;
            }

            .nav-inner {
                justify-content: space-between;
                position: relative;
            }

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

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

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

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

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

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

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

            .section-title {
                font-size: 24px;
            }

            .floating-cta {
                width: 48px;
                height: 48px;
                padding: 0;
                border-radius: 50%;
                justify-content: center;
                right: 16px;
                bottom: 16px;
            }

            .floating-cta span {
                display: none;
            }

            .floating-cta i {
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-number {
                font-size: 28px;
            }

            .stat-item {
                padding: 20px 16px;
            }

            .content-card .card-body {
                padding: 20px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }