/* roulang page: index */
:root{
  --primary:hsl(215,70%,55%);
  --primary-dark:hsl(215,70%,47%);
  --secondary:hsl(170,60%,42%);
  --accent:hsl(38,92%,55%);
  --bg:hsl(210,33%,97%);
  --card-bg:#FFFFFF;
  --text:hsl(222,42%,14%);
  --text-sub:hsl(215,15%,51%);
  --border:hsl(210,20%,90%);
  --primary-light:#EAF1FE;
  --radius:12px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(22,33,58,0.04);
  --shadow-lg:0 12px 32px rgba(22,33,58,0.08);
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","WenQuanYi Micro Hei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:color .2s ease}
img{max-width:100%;display:block}
button{font-family:var(--font);cursor:pointer}
.container{max-width:1280px}
.h1,.h2,.h3,h1,h2,h3,h4{font-family:var(--font)}

/* Header & Nav */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;background:transparent;transition:background .3s ease,box-shadow .3s ease}
.site-header.scrolled{background:var(--card-bg);box-shadow:var(--shadow-sm)}
.navbar{padding:0;height:64px}
.navbar .container{display:flex;align-items:center;height:100%}
.brand-logo{font-size:20px;font-weight:700;color:var(--text);letter-spacing:-0.02em;display:flex;align-items:center;gap:8px}
.brand-logo .logo-mark{width:30px;height:30px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:700}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:32px}
.nav-links a{font-size:15px;color:var(--text);font-weight:500;position:relative;padding:4px 0}
.nav-links a:hover{color:var(--primary)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{content:'';position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--primary);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-wrap{position:relative;display:flex;align-items:center}
.search-toggle{background:none;border:none;color:var(--text);font-size:16px;padding:8px;transition:color .2s}
.search-toggle:hover{color:var(--primary)}
.search-box{position:absolute;right:0;top:calc(100% + 8px);width:280px;background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;box-shadow:var(--shadow-lg);display:none;z-index:100}
.search-box.show{display:block}
.search-box input{width:100%;border:none;outline:none;font-size:14px;padding:6px 0;background:transparent;color:var(--text)}
.search-box input::placeholder{color:var(--text-sub)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:8px 20px;font-size:14px;font-weight:500;transition:background .3s,transform .2s}
.nav-cta:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.nav-toggle{background:none;border:none;font-size:20px;color:var(--text);padding:8px;display:none}
.mobile-menu{display:none;position:fixed;top:64px;left:0;right:0;background:var(--card-bg);box-shadow:var(--shadow-lg);z-index:999;padding:16px 24px 24px;border-radius:0 0 var(--radius) var(--radius)}
.mobile-menu.show{display:block}
.mobile-menu a{display:block;padding:12px 0;font-size:16px;color:var(--text);border-bottom:1px solid var(--border)}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a.active{color:var(--primary);font-weight:600}
.mobile-menu .mobile-search{margin-top:12px;display:flex;border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px}
.mobile-menu .mobile-search input{border:none;outline:none;flex:1;font-size:14px;background:transparent}
.mobile-menu .mobile-search i{color:var(--text-sub)}

/* Hero */
.hero{position:relative;padding-top:96px;padding-bottom:64px;min-height:calc(100vh - 64px);display:flex;align-items:center;background:var(--bg);overflow:hidden}
.hero-row{display:flex;align-items:center;gap:0}
.hero-left{padding-right:48px}
.hero-left h1{font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.25;letter-spacing:-0.02em;color:var(--text);margin-bottom:20px}
.hero-left h1 .highlight{color:var(--primary);position:relative}
.hero-sub{font-size:18px;color:var(--text-sub);line-height:1.7;margin-bottom:32px;max-width:440px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary-custom{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:12px 28px;font-size:15px;font-weight:500;transition:all .3s ease}
.btn-primary-custom:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 4px 16px rgba(37,99,235,0.25)}
.btn-primary-custom:active{transform:translateY(0)}
.btn-outline-custom{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--primary);border:1px solid var(--primary);border-radius:var(--radius-sm);padding:12px 28px;font-size:15px;font-weight:500;transition:all .3s ease}
.btn-outline-custom:hover{background:rgba(37,99,235,0.05);border-color:var(--primary-dark);color:var(--primary-dark)}
.btn-outline-custom:active{transform:translateY(0)}
.hero-right{padding-left:24px}
.hero-card{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.hero-card > img{width:100%;height:auto;min-height:360px;object-fit:cover}
.hero-info-bar{position:absolute;bottom:16px;left:16px;right:16px;background:rgba(255,255,255,0.95);border-radius:8px;padding:12px 16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-sm)}
.tag-secondary{display:inline-flex;align-items:center;background:rgba(0,150,136,0.12);color:var(--secondary);font-size:12px;font-weight:600;padding:3px 10px;border-radius:20px;white-space:nowrap}
.hero-info-bar .info-title{font-size:15px;color:var(--text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Theme Cover */
.theme-cover{padding:clamp(60px,8vw,96px) 0 0}
.cover-bg{position:relative;border-radius:var(--radius);overflow:hidden;min-height:280px;display:flex;align-items:center;background-size:cover;background-position:center}
.cover-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(22,33,58,0.75) 0%,rgba(22,33,58,0.35) 60%,rgba(22,33,58,0.1) 100%)}
.cover-content{position:relative;z-index:1;padding:48px 56px;color:#fff;max-width:620px}
.cover-content h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:12px;letter-spacing:-0.01em}
.cover-content p{font-size:15px;line-height:1.7;color:rgba(255,255,255,0.9)}

/* Section spacing */
.section{padding:clamp(60px,8vw,96px) 0}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-0.01em;color:var(--text);margin-bottom:8px}
.section-desc{color:var(--text-sub);font-size:15px;max-width:480px;margin-bottom:40px}

/* Directory */
.directory{background:var(--card-bg);border-radius:var(--radius);padding:48px 56px;box-shadow:var(--shadow-sm)}
.dir-list{list-style:none;padding:0;margin:0}
.dir-item{display:flex;align-items:center;height:56px;border-bottom:1px solid var(--border);padding:0 16px;border-radius:8px;transition:all .3s ease;cursor:pointer}
.dir-item:last-child{border-bottom:none}
.dir-item:hover{background:var(--primary-light);transform:translateX(4px)}
.dir-num{width:32px;height:32px;border-radius:50%;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-right:20px;flex-shrink:0;transition:background .3s,color .3s}
.dir-item:hover .dir-num{background:var(--primary);color:#fff}
.dir-name{font-size:16px;font-weight:500;color:var(--text);flex:1}
.dir-desc{font-size:13px;color:var(--text-sub);margin-left:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dir-icon{color:var(--border);font-size:14px;margin-left:16px;transition:color .3s,transform .3s}
.dir-item:hover .dir-icon{color:var(--primary);transform:translateX(2px)}

/* Featured Cards */
.featured-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:all .3s ease;display:block;height:100%}
.featured-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.featured-cover{position:relative;aspect-ratio:4/3;overflow:hidden}
.featured-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.featured-card:hover .featured-cover img{transform:scale(1.03)}
.featured-body{padding:24px}
.featured-body .tag-secondary{margin-bottom:12px}
.featured-body h3{font-size:18px;font-weight:600;color:var(--text);line-height:1.5;margin:8px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.featured-body .featured-excerpt{font-size:14px;color:var(--text-sub);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
.featured-body .featured-date{font-size:13px;color:var(--text-sub)}

/* Related Cards */
.related-section{background:var(--card-bg);border-radius:var(--radius);padding:48px;box-shadow:var(--shadow-sm)}
.related-card{display:block;background:var(--bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .3s ease;height:100%}
.related-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.related-cover{aspect-ratio:1/1;overflow:hidden}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-cover img{transform:scale(1.03)}
.related-body{padding:16px}
.related-body h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body .related-date{font-size:13px;color:var(--text-sub)}

/* CTA Band */
.cta-band{background:var(--primary-light);border-radius:var(--radius);padding:56px 48px;text-align:center}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700;margin-bottom:10px;color:var(--text)}
.cta-band p{color:var(--text-sub);font-size:15px;margin-bottom:28px}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-fav{display:inline-flex;align-items:center;gap:8px;background:var(--card-bg);color:var(--secondary);border:1px solid var(--secondary);border-radius:var(--radius-sm);padding:12px 28px;font-size:15px;font-weight:500;transition:all .3s ease}
.btn-fav:hover{background:var(--secondary);color:#fff;transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,150,136,0.25)}
.btn-share{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--primary);border:1px solid var(--primary);border-radius:var(--radius-sm);padding:12px 28px;font-size:15px;font-weight:500;transition:all .3s ease}
.btn-share:hover{background:var(--primary);color:#fff;transform:translateY(-1px);box-shadow:0 4px 16px rgba(37,99,235,0.25)}

/* News Section */
.news-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.news-header h2{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-0.01em;margin:0}
.more-link{font-size:14px;color:var(--primary);font-weight:500;transition:color .2s}
.more-link:hover{color:var(--primary-dark)}
.news-grid{margin-top:0}
.news-featured{display:block;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:all .3s ease;height:100%}
.news-featured:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.news-featured-cover{aspect-ratio:16/9;overflow:hidden}
.news-featured-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-featured:hover .news-featured-cover img{transform:scale(1.03)}
.news-featured-body{padding:24px}
.news-featured-body h3{font-size:20px;font-weight:600;line-height:1.4;margin:10px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-featured-body p{font-size:14px;color:var(--text-sub);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
.news-date{font-size:13px;color:var(--text-sub)}
.news-list{display:flex;flex-direction:column;gap:0}
.news-row{display:flex;align-items:center;gap:12px;padding:16px 0;border-bottom:1px solid var(--border);transition:background .2s;border-radius:8px}
.news-row:last-child{border-bottom:none}
.news-row:hover{background:var(--primary-light);padding-left:8px}
.tag-small{flex-shrink:0;display:inline-flex;align-items:center;background:rgba(37,99,235,0.08);color:var(--primary);font-size:12px;font-weight:500;padding:2px 8px;border-radius:20px}
.news-row-title{flex:1;font-size:15px;color:var(--text);font-weight:400;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color .2s}
.news-row:hover .news-row-title{color:var(--primary)}
.news-empty{background:rgba(37,99,235,0.04);border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:120px;gap:8px}
.news-empty i{font-size:32px;color:var(--border)}
.news-empty p{font-size:14px;color:var(--text-sub)}

/* FAQ */
.faq-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:8px 24px}
.accordion-item{background:transparent;border:none}
.accordion-button{background:transparent;font-size:15px;font-weight:600;color:var(--text);padding:18px 0;border-bottom:1px solid var(--border);box-shadow:none}
.accordion-button:not(.collapsed){background:transparent;color:var(--primary);box-shadow:none}
.accordion-button:focus{box-shadow:none}
.accordion-button::after{content:'';display:inline-block;width:16px;height:16px;background:transparent;border:2px solid var(--primary);border-radius:50%;position:relative;transition:all .3s}
.accordion-button::before{content:'+';position:absolute;right:14px;font-size:16px;color:var(--primary);font-weight:400;z-index:1;transition:transform .3s}
.accordion-button:not(.collapsed)::before{transform:rotate(45deg)}
.accordion-button::after{display:none}
.accordion-body{padding:0 0 18px;background:var(--primary-light);border-radius:8px;margin:4px 0 12px;font-size:14px;color:var(--text-sub);line-height:1.7}
.accordion-body-inner{padding:14px 16px}
.accordion-item:last-child .accordion-button{border-bottom:none}

/* Footer */
.site-footer{background:hsl(210,33%,95%);border-top:1px solid var(--border);padding:48px 0 24px}
.footer-brand{font-size:20px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-brand .logo-mark{width:28px;height:28px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:700}
.footer-desc{font-size:14px;color:var(--text-sub);line-height:1.6;max-width:300px}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:0.02em}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-sub);transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border);margin-top:32px;padding-top:16px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-bottom span{font-size:13px;color:var(--text-sub)}
.footer-bottom a{font-size:13px;color:var(--text-sub)}
.footer-bottom a:hover{color:var(--primary)}

/* Responsive */
@media(max-width:992px){
  .nav-links{gap:16px;margin-left:16px}
  .nav-links a{font-size:14px}
  .hero{padding-top:88px}
  .hero-left{padding-right:16px}
  .hero-right{padding-left:16px}
  .cover-content{padding:32px}
  .directory{padding:32px}
  .related-section{padding:32px}
}
@media(max-width:768px){
  .nav-links,.nav-right .search-wrap,.nav-cta{display:none}
  .nav-toggle{display:block}
  .mobile-menu{display:block;transform:translateY(-20px);opacity:0;pointer-events:none;transition:all .3s}
  .mobile-menu.show{transform:translateY(0);opacity:1;pointer-events:auto}
  .hero{min-height:auto;padding-top:80px;padding-bottom:48px}
  .hero-row{flex-direction:column}
  .hero-left{padding-right:0;text-align:center;margin-bottom:32px}
  .hero-sub{margin:0 auto 28px}
  .hero-cta{justify-content:center}
  .hero-right{padding-left:0}
  .hero-card img{min-height:260px}
  .cover-content{padding:32px 24px}
  .cover-overlay{background:linear-gradient(180deg,rgba(22,33,58,0.55),rgba(22,33,58,0.75))}
  .dir-desc{display:none}
  .featured-cover{aspect-ratio:16/10}
  .news-row-title{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .cta-band{padding:40px 24px}
  .site-footer{padding:32px 0 20px}
  .footer-bottom{flex-direction:column;text-align:center}
  .directory{padding:24px}
  .related-section{padding:24px}
}
@media(max-width:520px){
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .btn-primary-custom,.btn-outline-custom{width:100%;justify-content:center}
  .cta-buttons{flex-direction:column;width:100%}
  .btn-fav,.btn-share{width:100%;justify-content:center}
  .cover-content p{font-size:14px}
  .featured-body{padding:16px}
  .dir-item{padding:0 12px}
}

/* roulang page: category1 */
:root {
  --primary: hsl(215, 70%, 55%);
  --primary-dark: hsl(215, 70%, 46%);
  --primary-soft: #EAF1FE;
  --secondary: hsl(170, 60%, 42%);
  --secondary-dark: hsl(170, 60%, 36%);
  --secondary-soft: hsl(170, 60%, 96%);
  --accent: hsl(38, 92%, 55%);
  --bg: hsl(210, 33%, 97%);
  --card: #FFFFFF;
  --text: hsl(222, 42%, 14%);
  --text-muted: hsl(215, 15%, 51%);
  --border: hsl(210, 20%, 90%);
  --radius: 12px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(22, 33, 58, 0.04);
  --shadow-md: 0 12px 32px rgba(22, 33, 58, 0.08);
  --shadow-lg: 0 24px 56px rgba(22, 33, 58, 0.10);
  --container-w: 1280px;
  --spacer: clamp(60px, 8vw, 96px);
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "WenQuanYi Micro Hei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease, opacity .2s ease; }
button { font-family: var(--font); border: none; background: none; cursor: pointer; }
input { font-family: var(--font); }
ul, ol { list-style: none; }
.container { max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
section { padding: var(--spacer) 0; }

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 64px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.site-header .navbar { height: 64px; padding: 0; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  white-space: nowrap;
}
.brand-logo:hover { color: var(--primary); }
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
}
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 32px; }
.nav-links a {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 6px;
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.nav-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(58, 123, 224, 0.25); }
.search-wrap { position: relative; display: flex; align-items: center; }
.search-toggle {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 15px;
  transition: background .2s ease, color .2s ease;
}
.search-toggle:hover { background: var(--primary-soft); color: var(--primary); }
.search-box {
  position: absolute;
  right: 0; top: 48px;
  width: 280px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all .25s ease;
  z-index: 100;
}
.search-box.open { opacity: 1; visibility: visible; transform: translateY(0); }
.search-box input {
  width: 100%;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 12px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.search-box input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-soft); }
.nav-toggle {
  display: none;
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  transition: background .2s ease, color .2s ease;
}
.nav-toggle:hover { background: var(--primary-soft); color: var(--primary); }

/* Mobile menu */
.mobile-menu {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 16px 0 24px;
  box-shadow: var(--shadow-md);
}
.mobile-menu .container { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
}
.mobile-menu a::after { content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--text-muted); font-size: 14px; }
.mobile-menu a:hover { background: var(--primary-soft); color: var(--primary); }
.mobile-menu a.active { color: var(--primary); background: var(--primary-soft); }

/* ========== Hero ========== */
.category-hero {
  padding: calc(64px + clamp(48px, 6vw, 72px)) 0 clamp(48px, 6vw, 72px);
  background: linear-gradient(135deg, #F0F5FF 0%, var(--bg) 60%);
  position: relative;
  overflow: hidden;
}
.category-hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.hero-breadcrumb a { color: var(--text-muted); }
.hero-breadcrumb a:hover { color: var(--primary); }
.hero-breadcrumb i { font-size: 11px; }
.hero-category {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--secondary-soft);
  color: var(--secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.category-hero h1 { font-size: clamp(30px, 4vw, 46px); font-weight: 700; letter-spacing: -0.02em; color: var(--text); line-height: 1.25; margin-bottom: 16px; }
.category-hero .hero-sub { font-size: 17px; line-height: 1.8; color: var(--text-muted); max-width: 480px; margin-bottom: 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--primary);
  transition: all .2s ease;
}
.btn-primary-custom:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 8px 20px rgba(58,123,224,.2); }
.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--primary);
  transition: all .2s ease;
}
.btn-outline-custom:hover { background: var(--primary-soft); color: var(--primary); }
.hero-visual { position: relative; }
.hero-visual .hero-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.hero-visual .hero-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.18));
  pointer-events: none;
}
.hero-visual .hero-img-wrap img { width: 100%; height: 360px; object-fit: cover; }
.hero-card-float {
  position: absolute;
  left: 24px; bottom: 20px;
  background: rgba(255,255,255,0.96);
  border-radius: 8px;
  padding: 12px 18px 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(4px);
  max-width: 280px;
}
.hero-card-float .float-tag {
  background: var(--secondary-soft);
  color: var(--secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}
.hero-card-float .float-text { font-size: 14px; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ========== Stats band ========== */
.stats-band { padding: 28px 0; border-bottom: 1px solid var(--border); }
.stats-band .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.stat-item { text-align: center; padding: 16px 8px; }
.stat-number { font-size: 30px; font-weight: 700; color: var(--primary); letter-spacing: -0.02em; line-height: 1.2; }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ========== Section headings ========== */
.section-head { margin-bottom: 40px; }
.section-head.left { text-align: left; }
.section-head.center { text-align: center; }
.section-head .sec-label { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--secondary); font-weight: 600; margin-bottom: 8px; }
.section-head .sec-label::before { content: ""; width: 20px; height: 2px; background: var(--secondary); display: inline-block; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 700; letter-spacing: -0.01em; color: var(--text); margin-bottom: 8px; }
.section-head p.sec-desc { font-size: 15px; color: var(--text-muted); max-width: 560px; }

/* ========== Feature cards ========== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
  position: relative;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.feature-card:nth-child(2) .feature-icon { background: var(--secondary-soft); color: var(--secondary); }
.feature-card h3 { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.feature-card p { font-size: 14px; line-height: 1.75; color: var(--text-muted); margin: 0; }

/* ========== Scenarios ========== */
.scenario-section { background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
  background: var(--bg);
}
.scenario-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.scenario-num { font-size: 13px; font-weight: 700; color: var(--secondary); margin-bottom: 12px; letter-spacing: .04em; }
.scenario-item h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.scenario-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* ========== Collection cards (2-col large) ========== */
.collection-section { background: var(--bg); }
.collection-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.collection-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
  display: block;
}
.collection-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.collection-cover {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
}
.collection-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.collection-card:hover .collection-cover img { transform: scale(1.04); }
.collection-cover .cover-cat {
  position: absolute;
  left: 16px; top: 16px;
  background: rgba(255,255,255,0.92);
  color: var(--secondary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.collection-body { padding: 24px 24px 20px; }
.collection-body h3 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 8px; line-height: 1.45; }
.collection-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.collection-meta { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-muted); }
.collection-meta i { font-size: 12px; }

/* ========== Flow steps ========== */
.flow-section { background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: flow; }
.flow-item { position: relative; padding: 28px 20px 20px; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease; }
.flow-item:hover { border-color: var(--secondary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.flow-num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--secondary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
}
.flow-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.flow-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin: 0; }

/* ========== FAQ ========== */
.faq-section { background: var(--bg); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.faq-column { display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; font-size: 15px; font-weight: 600; color: var(--text); text-align: left; transition: color .2s ease, background .2s ease; gap: 16px; }
.faq-question:hover { color: var(--primary); }
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: transform .3s ease, background .3s ease, color .3s ease;
}
.faq-item.open .faq-question { background: var(--primary-soft); color: var(--primary); }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer { display: none; padding: 0 22px 18px; font-size: 14px; color: var(--text-muted); line-height: 1.75; border-top: 1px dashed var(--border); padding-top: 14px; }

/* ========== CTA banner ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-soft), #F5F8FF);
  border-top: 1px solid var(--border);
  padding: 56px 0;
  text-align: center;
}
.cta-banner h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: var(--text); margin-bottom: 10px; letter-spacing: -0.01em; }
.cta-banner p { font-size: 15px; color: var(--text-muted); margin-bottom: 20px; }
.cta-banner .link-arrow { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 600; color: var(--primary); }
.cta-banner .link-arrow:hover { color: var(--primary-dark); gap: 12px; }
.cta-banner .link-arrow i { font-size: 12px; transition: transform .2s ease; }
.cta-banner .link-arrow:hover i { transform: translateX(2px); }

/* ========== Footer ========== */
.site-footer { background: hsl(210, 30%, 95%); border-top: 1px solid var(--border); padding: 48px 0 0; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.footer-brand .logo-mark { width: 32px; height: 32px; font-size: 14px; }
.footer-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin: 0; max-width: 320px; }
.footer-title { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 14px; }
.footer-links { padding: 0; margin: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 14px; color: var(--text-muted); }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 36px; padding: 18px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.footer-bottom span { font-size: 13px; color: var(--text-muted); }
.footer-bottom a { font-size: 13px; color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }

/* ========== Responsive ========== */
@media (max-width: 992px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .category-hero .container { grid-template-columns: 1fr; gap: 32px; }
  .category-hero { padding-top: calc(64px + 40px); }
  .hero-visual .hero-img-wrap img { height: 320px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-grid { grid-template-columns: 1fr; }
  .stats-band .stats-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .container { padding-left: 18px; padding-right: 18px; }
  .category-hero h1 { font-size: 28px; }
  .category-hero .hero-sub { font-size: 16px; }
  .collection-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr; }
  .stats-band .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-number { font-size: 24px; }
  .hero-actions .btn-primary-custom, .hero-actions .btn-outline-custom { width: 100%; justify-content: center; }
  .hero-card-float { left: 12px; bottom: 12px; max-width: calc(100% - 24px); }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .stats-band .stats-grid { grid-template-columns: 1fr; gap: 0; }
  .stat-item { padding: 10px 0; }
  .faq-question { font-size: 14px; padding: 16px 16px; }
  .faq-answer { padding: 0 16px 16px; }
  .collection-body { padding: 18px; }
  .section-head { margin-bottom: 28px; }
}

/* roulang page: article */
:root {
            --primary: hsl(215, 70%, 55%);
            --primary-dark: hsl(215, 70%, 47%);
            --primary-tint: #EAF1FE;
            --secondary: hsl(170, 60%, 42%);
            --secondary-tint: hsl(170, 60%, 95%);
            --accent: hsl(38, 92%, 55%);
            --bg: hsl(210, 33%, 97%);
            --card-bg: #ffffff;
            --text: hsl(222, 42%, 14%);
            --text-muted: hsl(215, 15%, 51%);
            --border: hsl(210, 20%, 90%);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 10px rgba(22, 33, 58, 0.04);
            --shadow-md: 0 12px 32px rgba(22, 33, 58, 0.08);
            --shadow-lg: 0 24px 56px rgba(22, 33, 58, 0.10);
            --header-h: 64px;
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "WenQuanYi Micro Hei", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 2px 10px rgba(22, 33, 58, 0.06);
            transition: all .3s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 20px rgba(22, 33, 58, 0.08);
        }
        .navbar {
            height: var(--header-h);
            padding: 0;
        }
        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            flex-shrink: 0;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 0;
            position: relative;
            transition: color .2s;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-wrap {
            position: relative;
        }
        .search-toggle {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text);
            font-size: 15px;
            transition: all .2s;
        }
        .search-toggle:hover {
            background: var(--primary-tint);
            color: var(--primary);
        }
        .search-box {
            position: absolute;
            right: 0;
            top: calc(100% + 12px);
            width: 280px;
            background: #fff;
            border-radius: 10px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            opacity: 0;
            transform: translateY(-8px);
            pointer-events: none;
            transition: all .3s ease;
            z-index: 100;
            padding: 8px;
        }
        .search-wrap.open .search-box {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .search-box input {
            width: 100%;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0 14px;
            font-size: 14px;
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
        }
        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-tint);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff !important;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 10px;
            transition: all .25s;
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(30, 90, 180, 0.2);
        }
        .nav-toggle {
            display: none;
            width: 36px;
            height: 36px;
            alignItems: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 18px;
            color: var(--text);
        }

        .mobile-menu {
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: var(--shadow-md);
            z-index: 999;
            border-top: 1px solid var(--border);
        }
        @media (min-width: 992px) {
            .mobile-menu {
                display: none !important;
            }
        }
        .mobile-menu .mobile-menu-inner {
            padding: 16px 0 24px;
        }
        .mobile-menu a {
            display: block;
            font-size: 16px;
            padding: 14px 0;
            color: var(--text);
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu a:last-of-type {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-menu .mobile-search {
            margin-top: 16px;
        }
        .mobile-menu .mobile-search input {
            width: 100%;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0 14px;
            font-size: 14px;
        }
        .mobile-menu .mobile-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-tint);
        }
        .mobile-menu .mobile-cta {
            display: block;
            text-align: center;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            padding: 12px;
            margin-top: 16px;
            font-size: 15px;
            border-bottom: none;
        }
        .mobile-menu .mobile-cta:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .article-page-main {
            padding-top: 96px;
            min-height: calc(100vh - 200px);
        }
        .article-container {
            max-width: 760px;
            margin: 0 auto;
        }

        .breadcrumb-wrap {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .breadcrumb-wrap a {
            color: var(--text-muted);
            transition: color .2s;
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap .sep {
            color: var(--border);
            font-size: 12px;
        }
        .breadcrumb-wrap .current {
            color: var(--text);
            font-weight: 500;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            display: inline-block;
            vertical-align: bottom;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            margin-bottom: 40px;
        }
        .article-header-block {
            padding: 44px 48px 32px;
        }
        .article-header-block h1 {
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.02em;
            margin-bottom: 22px;
            color: var(--text);
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }
        .article-date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-cat-tag {
            display: inline-block;
            background: var(--secondary-tint);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
            transition: all .2s;
        }
        .article-cat-tag:hover {
            background: var(--secondary);
            color: #fff;
        }
        .article-summary {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            border-left: 3px solid var(--primary);
            background: var(--primary-tint);
            padding: 14px 18px;
            border-radius: 0 8px 8px 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-divider {
            height: 1px;
            background: var(--border);
            margin: 0 48px;
        }
        .article-content {
            padding: 36px 48px 48px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .article-content > *:first-child {
            margin-top: 0;
        }
        .article-content > *:last-child {
            margin-bottom: 0;
        }
        .article-content p {
            margin-bottom: 1.2em;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 1.6em 0 .8em;
            color: var(--text);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 1.4em 0 .6em;
            color: var(--text);
            line-height: 1.5;
        }
        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 1.2em 0 .6em;
            color: var(--text);
        }
        .article-content img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: var(--primary-tint);
            border-radius: 0 8px 8px 0;
            padding: 16px 20px;
            margin: 24px 0;
            color: var(--text-muted);
            font-size: 15px;
        }
        .article-content ul,
        .article-content ol {
            padding-left: 1.6em;
            margin: 0 0 1.2em;
        }
        .article-content li {
            margin-bottom: .5em;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
        }
        .article-content th,
        .article-content td {
            padding: 10px 14px;
            border: 1px solid var(--border);
            font-size: 15px;
        }
        .article-content th {
            background: var(--primary-tint);
            font-weight: 600;
        }
        .article-content code {
            background: var(--bg);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: .9em;
        }
        .article-content pre {
            background: hsl(222, 42%, 14%);
            color: #f5f7fa;
            padding: 20px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.7;
        }
        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-not-found {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 80px 40px;
            text-align: center;
            box-shadow: var(--shadow-md);
            margin-bottom: 40px;
        }
        .article-not-found i {
            font-size: 48px;
            color: var(--border);
            margin-bottom: 16px;
        }
        .article-not-found p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found a {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 10px;
            font-size: 15px;
            transition: all .2s;
        }
        .article-not-found a:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .related-section {
            padding: 24px 0 48px;
        }
        .section-title {
            font-size: clamp(22px, 2.5vw, 30px);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 32px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: block;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all .3s ease;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-card .card-cover {
            aspect-ratio: 1 / 1;
            overflow: hidden;
        }
        .related-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .related-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .related-card .card-body {
            padding: 16px 20px;
        }
        .related-card .card-body h3 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .time {
            font-size: 13px;
            color: var(--text-muted);
        }

        .back-links-wrap {
            padding: 16px 0 80px;
        }
        .back-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .back-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            color: var(--primary);
            font-weight: 500;
            padding: 10px 24px;
            border: 1px solid var(--primary);
            border-radius: 10px;
            transition: all .2s;
        }
        .back-links a:hover {
            background: var(--primary-tint);
            border-color: var(--primary-dark);
        }

        .site-footer {
            background: hsl(210, 33%, 96%);
            border-top: 1px solid var(--border);
            padding: 56px 0 0;
            margin-top: 48px;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-links {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            margin-top: 40px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 991.98px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .article-header-block {
                padding: 32px 28px 24px;
            }
            .article-content {
                padding: 28px 28px 40px;
            }
            .article-divider {
                margin: 0 28px;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding: 0 20px;
            }
            .article-page-main {
                padding-top: 84px;
            }
            .article-header-block {
                padding: 28px 20px 20px;
            }
            .article-content {
                padding: 22px 20px 32px;
            }
            .article-divider {
                margin: 0 20px;
            }
            .article-header-block h1 {
                font-size: 24px;
            }
            .article-summary {
                font-size: 14px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card {
                display: flex;
                align-items: stretch;
            }
            .related-card .card-cover {
                width: 120px;
                aspect-ratio: 1 / 1;
                flex-shrink: 0;
            }
            .related-card .card-body {
                display: flex;
                flex-direction: column;
                justify-content: center;
                flex: 1;
            }
            .back-links {
                flex-direction: column;
                align-items: stretch;
            }
            .back-links a {
                justify-content: center;
                max-width: 320px;
                width: 100%;
                margin: 0 auto;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .footer-bottom a {
                margin-left: 0;
            }
        }
        @media (max-width: 520px) {
            .brand-logo span:last-child {
                font-size: 16px;
            }
            .breadcrumb-wrap {
                font-size: 13px;
            }
            .breadcrumb-wrap .current {
                max-width: 180px;
            }
            .article-meta {
                gap: 10px;
            }
        }

/* roulang page: category2 */
:root{
  --primary: hsl(215,70%,55%);
  --primary-dark: hsl(215,70%,47%);
  --primary-light: #EAF1FE;
  --secondary: hsl(170,60%,42%);
  --secondary-dark: hsl(170,60%,34%);
  --accent: hsl(38,92%,55%);
  --bg: hsl(210,33%,97%);
  --card-bg: #FFFFFF;
  --text-main: hsl(222,42%,14%);
  --text-sub: hsl(215,15%,51%);
  --border: hsl(210,20%,90%);
  --radius-card: 12px;
  --radius-btn: 10px;
  --radius-tag: 999px;
  --shadow-card: 0 2px 10px rgba(22,33,58,0.04);
  --shadow-float: 0 12px 32px rgba(22,33,58,0.08);
  --shadow-menu: 0 24px 56px rgba(22,33,58,0.10);
  --space-section: clamp(60px, 8vw, 96px);
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "WenQuanYi Micro Hei", sans-serif;
}
*, *::before, *::after{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text-main);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{
  max-width:100%;
  display:block;
}
a{
  text-decoration:none;
  color:var(--primary);
  transition:color .25s ease;
}
a:hover{
  color:var(--primary-dark);
}
button{
  font-family:inherit;
}
.container{
  max-width:1280px;
}
/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  height:64px;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s ease, background .3s ease;
}
.site-header.scrolled{
  box-shadow:0 4px 24px rgba(22,33,58,.08);
  background:#fff;
}
.navbar{
  min-height:64px;
  padding:0;
}
.navbar .navbar-nav .nav-link{
  color:var(--text-main);
  font-size:15px;
  font-weight:500;
  padding:0.5rem 1rem;
  position:relative;
}
.navbar .navbar-nav .nav-link:hover{
  color:var(--primary);
}
.navbar .navbar-nav .nav-link.active{
  color:var(--primary);
}
.navbar .navbar-nav .nav-link.active::after{
  content:"";
  position:absolute;
  left:1rem;
  right:1rem;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:18px;
  font-weight:700;
  color:var(--text-main);
}
.brand-logo:hover{
  color:var(--text-main);
}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  border-radius:8px;
  background:var(--primary);
  color:#fff;
  font-size:13px;
  font-weight:700;
  letter-spacing:1px;
  flex-shrink:0;
}
.search-wrap{
  position:relative;
  display:flex;
  align-items:center;
}
.search-toggle{
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid var(--border);
  background:var(--card-bg);
  color:var(--text-sub);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:all .25s ease;
}
.search-toggle:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:var(--primary-light);
}
.search-box{
  position:absolute;
  right:44px;
  top:50%;
  transform:translateY(-50%) scaleX(.8);
  transform-origin:right center;
  width:220px;
  padding:8px 16px;
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-btn);
  box-shadow:var(--shadow-menu);
  opacity:0;
  visibility:hidden;
  transition:all .25s ease;
  z-index:10;
}
.search-box.open{
  opacity:1;
  visibility:visible;
  transform:translateY(-50%) scaleX(1);
}
.search-box input{
  border:none;
  outline:none;
  background:transparent;
  width:100%;
  font-size:14px;
  color:var(--text-main);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 18px;
  border-radius:var(--radius-btn);
  background:var(--primary);
  color:#fff;
  font-size:14px;
  font-weight:500;
  border:none;
  transition:all .25s ease;
}
.nav-cta:hover{
  background:var(--primary-dark);
  color:#fff;
  transform:translateY(-1px);
}
.nav-toggle{
  display:none;
  width:36px;
  height:36px;
  border-radius:10px;
  border:1px solid var(--border);
  background:var(--card-bg);
  color:var(--text-main);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  font-size:16px;
}
/* 移动折叠菜单 */
.mobile-menu{
  display:none;
}
.mobile-menu.show{
  display:block;
}
.mobile-menu-inner{
  background:#fff;
  border-bottom:1px solid var(--border);
  padding:16px 0 26px;
}
.mobile-menu-inner .mobile-link{
  display:block;
  padding:12px 0;
  font-size:16px;
  font-weight:500;
  color:var(--text-main);
  border-bottom:1px solid var(--border);
}
.mobile-menu-inner .mobile-link:hover{
  color:var(--primary);
}
.mobile-menu-inner .mobile-link.active{
  color:var(--primary);
}
.mobile-search{
  margin-top:16px;
  display:flex;
  gap:8px;
}
.mobile-search input{
  flex:1;
  height:42px;
  border-radius:10px;
  border:1px solid var(--border);
  padding:0 14px;
  font-size:14px;
  outline:none;
  transition:border-color .25s, box-shadow .25s;
}
.mobile-search input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px var(--primary-light);
}
.mobile-search button{
  width:42px;
  height:42px;
  border-radius:10px;
  border:1px solid var(--border);
  background:var(--primary);
  color:#fff;
  cursor:pointer;
}
/* Hero 区 */
.category-hero{
  position:relative;
  padding:100px 0 110px;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  min-height:420px;
  display:flex;
  align-items:center;
}
.category-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg, rgba(255,255,255,.97) 0%, rgba(255,255,255,.9) 55%, rgba(255,255,255,.55) 100%);
}
.category-hero .container{
  position:relative;
  z-index:2;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:22px;
}
.crumb a{
  color:var(--text-sub);
}
.crumb a:hover{
  color:var(--primary);
}
.crumb .sep{
  color:var(--border);
  font-size:12px;
}
.crumb .cur{
  color:var(--primary);
  font-weight:500;
}
.category-hero h1{
  font-size:clamp(30px,4vw,46px);
  font-weight:700;
  letter-spacing:-0.02em;
  margin-bottom:18px;
  color:var(--text-main);
  line-height:1.25;
}
.category-hero h1 span{
  color:var(--primary);
}
.category-hero .lead{
  font-size:18px;
  color:var(--text-sub);
  max-width:560px;
  line-height:1.7;
  margin-bottom:32px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.hero-tags .tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--card-bg);
  border:1px solid var(--border);
  font-size:13px;
  color:var(--text-sub);
}
.hero-tags .tag i{
  color:var(--secondary);
  font-size:12px;
}
/* 指南亮点 */
.feature-strip{
  padding:36px 0;
  background:#fff;
  border-bottom:1px solid var(--border);
  margin-top:-26px;
  position:relative;
  z-index:5;
}
.feature-strip .inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.feature-item{
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.feature-item .ficon{
  width:40px;
  height:40px;
  min-width:40px;
  border-radius:10px;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
}
.feature-item h3{
  font-size:15px;
  font-weight:600;
  margin:0 0 4px;
  color:var(--text-main);
}
.feature-item p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.5;
  margin:0;
}
/* 服务目录 */
.service-catalog{
  padding:var(--space-section) 0;
}
.section-head{
  margin-bottom:42px;
}
.section-head .ekit{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 14px;
  border-radius:999px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:13px;
  font-weight:500;
  margin-bottom:14px;
}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--text-main);
  margin:0 0 10px;
}
.section-head p{
  font-size:15px;
  color:var(--text-sub);
  margin:0;
  max-width:600px;
}
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.service-card{
  display:flex;
  height:120px;
  background:var(--card-bg);
  border-radius:12px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  border:1px solid var(--border);
  transition:all .3s ease;
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-float);
  border-color:transparent;
}
.service-card .card-thumb{
  width:120px;
  min-width:120px;
  height:120px;
  object-fit:cover;
}
.service-card .card-content{
  flex:1;
  padding:16px 14px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.service-card .card-content h3{
  font-size:15px;
  font-weight:600;
  margin:0 0 6px;
  color:var(--text-main);
  line-height:1.4;
}
.service-card .card-content p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
}
/* 适用场景 */
.scenario-section{
  padding:var(--space-section) 0;
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.scenario-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.scenario-card{
  padding:32px 28px;
  background:var(--bg);
  border-radius:12px;
  border:1px solid var(--border);
  transition:all .3s ease;
}
.scenario-card:hover{
  box-shadow:var(--shadow-float);
  transform:translateY(-4px);
  background:var(--card-bg);
}
.scenario-card .sno{
  font-size:34px;
  font-weight:800;
  color:var(--primary-light);
  line-height:1;
  margin-bottom:16px;
}
.scenario-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
  color:var(--text-main);
}
.scenario-card p{
  font-size:14px;
  color:var(--text-sub);
  margin:0;
  line-height:1.7;
}
/* 使用流程 */
.process-section{
  padding:var(--space-section) 0;
}
.process-wrap{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.process-step{
  text-align:center;
  padding:32px 18px;
  background:var(--card-bg);
  border-radius:12px;
  box-shadow:var(--shadow-card);
  position:relative;
}
.process-step .pnum{
  width:48px;
  height:48px;
  margin:0 auto 16px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  font-size:18px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
}
.process-step h3{
  font-size:16px;
  font-weight:600;
  margin-bottom:8px;
  color:var(--text-main);
}
.process-step p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.6;
  margin:0;
}
/* FAQ */
.faq-section{
  padding:var(--space-section) 0;
  background:#fff;
  border-top:1px solid var(--border);
}
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  column-gap:28px;
}
.accordion-item{
  border:none;
  background:transparent;
}
.accordion-button{
  font-size:15px;
  font-weight:600;
  color:var(--text-main);
  padding:18px 16px;
  background:transparent;
  display:flex;
  align-items:center;
  gap:10px;
}
.accordion-button:not(.collapsed){
  color:var(--primary);
  background:transparent;
  box-shadow:none;
}
.accordion-button:focus{
  box-shadow:0 0 0 4px var(--primary-light);
  border-radius:8px;
}
.accordion-button::after{
  flex-shrink:0;
  transform:none;
  background:none;
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  content:"\2b";
  color:var(--primary);
  font-size:16px;
}
.accordion-button:not(.collapsed)::after{
  content:"\f068";
  transform:none;
  color:var(--primary);
}
.accordion-body{
  padding:4px 16px 18px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  background:transparent;
  border-radius:8px;
  margin:0 16px 12px;
  margin-left:16px;
}
.accordion-body .inner{
  background:var(--primary-light);
  border-radius:8px;
  padding:14px 16px;
}
/* CTA */
.category-cta{
  padding:72px 0;
  background:var(--primary-light);
  text-align:center;
}
.category-cta h2{
  font-size:clamp(22px,3vw,30px);
  font-weight:700;
  color:var(--text-main);
  margin-bottom:12px;
}
.category-cta p{
  font-size:15px;
  color:var(--text-sub);
  max-width:520px;
  margin:0 auto 20px;
  line-height:1.7;
}
.category-cta a.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--primary);
  border-bottom:2px solid var(--primary);
  padding-bottom:2px;
  transition:all .25s ease;
}
.category-cta a.link-more:hover{
  color:var(--secondary);
  border-bottom-color:var(--secondary);
  gap:10px;
}
/* Footer */
.site-footer{
  background:hsl(210,33%,96%);
  border-top:1px solid var(--border);
  padding:48px 0 24px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:18px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:12px;
}
.footer-desc{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  max-width:280px;
  margin:0;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:18px;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  font-size:14px;
  color:var(--text-sub);
}
.footer-links a:hover{
  color:var(--primary);
}
.footer-bottom{
  margin-top:32px;
  padding-top:20px;
  border-top:1px solid var(--border);
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--text-sub);
}
.footer-bottom a{
  color:var(--text-sub);
  font-size:13px;
}
.footer-bottom a:hover{
  color:var(--primary);
}
/* 响应式 */
@media (max-width: 992px){
  .feature-strip .inner{
    grid-template-columns:repeat(2,1fr);
  }
  .service-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .process-wrap{
    grid-template-columns:repeat(2,1fr);
  }
  .scenario-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .faq-grid{
    grid-template-columns:1fr;
  }
  .nav-links{
    display:none!important;
  }
  .nav-cta{
    display:none;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .search-box{
    display:none;
  }
  .search-toggle{
    display:none;
  }
  .category-hero{
    min-height:360px;
    padding:80px 0 90px;
  }
}
@media (max-width: 768px){
  .service-grid{
    grid-template-columns:1fr;
  }
  .service-card .card-thumb{
    width:100px;
    min-width:100px;
    height:100px;
  }
  .scenario-grid{
    grid-template-columns:1fr;
  }
  .process-wrap{
    grid-template-columns:1fr;
  }
  .feature-strip .inner{
    grid-template-columns:1fr;
  }
  .navbar .container{
    padding-left:20px;
    padding-right:20px;
  }
  .category-hero h1{
    font-size:32px;
  }
  .category-hero .lead{
    font-size:16px;
  }
  .footer-bottom{
    flex-direction:column;
    gap:8px;
    text-align:center;
  }
}
@media (max-width: 520px){
  .service-card{
    height:auto;
    flex-direction:row;
    min-height:100px;
  }
  .service-card .card-thumb{
    width:92px;
    min-width:92px;
    height:100%;
    min-height:100px;
    object-fit:cover;
  }
  .service-card .card-content{
    padding:12px;
  }
  .service-card .card-content h3{
    font-size:14px;
  }
  .service-card .card-content p{
    font-size:12px;
    -webkit-line-clamp:2;
  }
  .feature-strip{
    margin-top:0;
  }
}

/* roulang page: category3 */
:root {
      --primary: #3B82F6;
      --primary-dark: #2563EB;
      --secondary: #14B8A6;
      --secondary-dark: #0F9D8E;
      --accent: #F59E0B;
      --bg: #F5F7FA;
      --card-bg: #FFFFFF;
      --text: #1E293B;
      --text-muted: #64748B;
      --border: #E2E8F0;
      --primary-light: #EAF1FE;
      --radius: 12px;
      --radius-btn: 10px;
      --radius-pill: 100px;
      --shadow: 0 2px 10px rgba(22,33,58,0.04);
      --shadow-lg: 0 12px 32px rgba(22,33,58,0.08);
      --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "WenQuanYi Micro Hei", sans-serif;
      --spacing-lg: clamp(60px, 8vw, 96px);
      --spacing-md: clamp(40px, 5vw, 60px);
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-family);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }
    a:hover {
      color: var(--primary);
    }
    img {
      max-width: 100%;
      display: block;
    }
    .container {
      max-width: 1280px;
      padding-left: 24px;
      padding-right: 24px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 28px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 500;
      border: 1px solid transparent;
      transition: all .25s ease;
      white-space: nowrap;
    }
    .btn:focus-visible {
      outline: 3px solid rgba(59, 130, 246, .25);
      outline-offset: 2px;
    }
    .btn-primary-custom {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary-custom:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(59, 130, 246, .22);
    }
    .btn-primary-custom:active {
      transform: translateY(0);
      box-shadow: none;
    }
    .btn-outline-custom {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-outline-custom:hover {
      background: rgba(59, 130, 246, .05);
      border-color: var(--primary-dark);
      color: var(--primary-dark);
    }
    .btn-favorite {
      background: #fff;
      border-color: var(--secondary);
      color: var(--secondary);
    }
    .btn-favorite:hover {
      background: var(--secondary);
      color: #fff;
    }
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      z-index: 1030;
      background: transparent;
      transition: background .3s ease, box-shadow .3s ease;
    }
    .site-header.scrolled {
      background: rgba(255, 255, 255, .96);
      box-shadow: 0 2px 10px rgba(22, 33, 58, .08);
      backdrop-filter: blur(8px);
    }
    .site-header .navbar {
      height: 64px;
      padding: 0;
    }
    .site-header .container {
      display: flex;
      align-items: center;
      height: 64px;
      gap: 24px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text);
      white-space: nowrap;
    }
    .brand-logo:hover {
      color: var(--text);
    }
    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      margin-left: auto;
    }
    .nav-links > a {
      position: relative;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      padding: 6px 2px;
      transition: color .2s;
    }
    .nav-links > a:hover {
      color: var(--primary);
    }
    .nav-links > a.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
    }
    .nav-links > a.active {
      color: var(--primary);
    }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .search-wrap {
      position: relative;
      display: flex;
      align-items: center;
    }
    .search-toggle {
      width: 38px;
      height: 38px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      background: transparent;
      border-radius: 10px;
      color: var(--text);
      cursor: pointer;
      transition: background .2s;
    }
    .search-toggle:hover {
      background: var(--primary-light);
      color: var(--primary);
    }
    .search-box {
      position: absolute;
      right: 40px;
      top: 50%;
      transform: translateY(-50%) scale(.92);
      width: 220px;
      opacity: 0;
      pointer-events: none;
      transition: all .25s ease;
      visibility: hidden;
    }
    .search-box.open {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(-50%) scale(1);
      visibility: visible;
    }
    .search-box input {
      width: 100%;
      height: 40px;
      padding: 0 14px;
      border: 1px solid var(--border);
      border-radius: 10px;
      font-family: var(--font-family);
      font-size: 14px;
      background: #fff;
      transition: border-color .2s, box-shadow .2s;
    }
    .search-box input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(59, 130, 246, .12);
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 38px;
      padding: 0 18px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 500;
      white-space: nowrap;
      transition: all .2s;
    }
    .nav-cta:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-1px);
    }
    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border: none;
      background: transparent;
      border-radius: 10px;
      font-size: 18px;
      color: var(--text);
      cursor: pointer;
    }
    .nav-toggle:hover {
      background: var(--primary-light);
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      border-radius: 0 0 16px 16px;
      box-shadow: 0 24px 56px rgba(22, 33, 58, .10);
      padding: 20px 24px 28px;
      z-index: 1020;
    }
    .mobile-menu.show {
      display: block;
    }
    .mobile-menu-links {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .mobile-menu-links a {
      display: flex;
      align-items: center;
      height: 48px;
      font-size: 16px;
      font-weight: 500;
      color: var(--text);
      border-bottom: 1px solid var(--border);
    }
    .mobile-menu-links a:last-child {
      border-bottom: none;
    }
    .mobile-menu-links a.active {
      color: var(--primary);
    }
    .mobile-menu-bottom {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 14px;
    }
    .mobile-menu-bottom input {
      flex: 1;
      height: 40px;
      padding: 0 14px;
      border: 1px solid var(--border);
      border-radius: 10px;
      font-size: 14px;
    }
    .mobile-menu-bottom input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(59, 130, 246, .12);
    }
    .hero-section {
      padding: calc(64px + clamp(48px, 7vw, 80px)) 0 clamp(48px, 6vw, 72px);
      background: var(--bg);
      overflow: hidden;
      position: relative;
    }
    .hero-section .container {
      display: flex;
      align-items: center;
      min-height: 60vh;
    }
    .hero-row {
      width: 100%;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 500;
      margin-bottom: 20px;
    }
    .hero-section h1 {
      font-size: clamp(32px, 4vw, 46px);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.2;
      margin-bottom: 16px;
      color: var(--text);
    }
    .hero-subtitle {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 440px;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .hero-card {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      background: #fff;
    }
    .hero-card img {
      width: 100%;
      height: 100%;
      min-height: 340px;
      object-fit: cover;
      filter: brightness(.96);
    }
    .hero-card-info {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      background: #fff;
      border-radius: 8px;
      padding: 12px 16px;
      box-shadow: 0 4px 14px rgba(22, 33, 58, .12);
      backdrop-filter: blur(4px);
    }
    .tag {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 3px 12px;
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 500;
      white-space: nowrap;
    }
    .tag-secondary {
      background: rgba(20, 184, 166, .12);
      color: var(--secondary-dark);
    }
    .tag-primary {
      background: rgba(59, 130, 246, .12);
      color: var(--primary-dark);
    }
    .hero-card-info .info-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .stats-section {
      padding: 48px 0;
      background: #fff;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }
    .stat-item {
      text-align: center;
      padding: 16px 8px;
    }
    .stat-item strong {
      display: block;
      font-size: 36px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
      line-height: 1.2;
    }
    .stat-item span {
      display: block;
      margin-top: 6px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .section-block {
      padding: var(--spacing-lg) 0;
    }
    .section-head {
      margin-bottom: clamp(32px, 5vw, 48px);
      text-align: center;
    }
    .section-head h2 {
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 700;
      letter-spacing: -0.01em;
      color: var(--text);
      margin-bottom: 8px;
    }
    .section-head p {
      font-size: 15px;
      color: var(--text-muted);
    }
    .section-head.left-align {
      text-align: left;
    }
    .features-section {
      padding: var(--spacing-lg) 0;
      background: var(--bg);
    }
    .feature-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 32px 28px;
      box-shadow: var(--shadow);
      height: 100%;
      transition: transform .25s, box-shadow .25s;
      border: 1px solid transparent;
    }
    .feature-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      color: #fff;
    }
    .feature-icon.i-blue {
      background: var(--primary);
    }
    .feature-icon.i-teal {
      background: var(--secondary);
    }
    .feature-icon.i-amber {
      background: var(--accent);
    }
    .feature-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text);
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 0;
    }
    .topic-list-section {
      padding: var(--spacing-lg) 0;
      background: #fff;
    }
    .topic-list {
      max-width: 960px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .topic-item {
      display: flex;
      align-items: center;
      gap: 20px;
      background: var(--bg);
      border-radius: 14px;
      padding: 14px 20px;
      min-height: 96px;
      cursor: pointer;
      transition: background .25s, transform .25s, box-shadow .25s;
      border: 1px solid transparent;
    }
    .topic-item:hover {
      background: var(--primary-light);
      transform: translateX(4px);
      box-shadow: 0 4px 14px rgba(59, 130, 246, .08);
    }
    .topic-thumb {
      width: 76px;
      height: 76px;
      border-radius: 10px;
      object-fit: cover;
      flex-shrink: 0;
    }
    .topic-content {
      flex: 1;
      min-width: 0;
    }
    .topic-content h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 4px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .topic-content p {
      font-size: 14px;
      color: var(--text-muted);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-bottom: 0;
    }
    .topic-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 6px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .topic-arrow {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #fff;
      color: var(--primary);
      font-size: 14px;
      flex-shrink: 0;
      box-shadow: 0 2px 6px rgba(22,33,58,.06);
      transition: all .25s;
    }
    .topic-item:hover .topic-arrow {
      background: var(--primary);
      color: #fff;
      transform: translateX(2px);
    }
    .process-section {
      padding: var(--spacing-lg) 0;
      background: var(--bg);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: step;
    }
    .process-step {
      background: #fff;
      border-radius: var(--radius);
      padding: 28px 24px;
      box-shadow: var(--shadow);
      position: relative;
      text-align: center;
      transition: transform .25s, box-shadow .25s;
    }
    .process-step:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }
    .process-step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 600;
      margin: 0 auto 16px;
    }
    .process-step h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 6px;
    }
    .process-step p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .scenario-section {
      padding: var(--spacing-lg) 0;
      background: #fff;
    }
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: var(--bg);
      border-radius: var(--radius);
      padding: 32px 28px;
      text-align: left;
      transition: background .25s, transform .25s, box-shadow .25s;
    }
    .scenario-card:hover {
      background: var(--primary-light);
      transform: translateY(-3px);
      box-shadow: var(--shadow);
    }
    .scenario-card .icon {
      width: 40px;
      height: 40px;
      margin-bottom: 16px;
      color: var(--primary);
      font-size: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .scenario-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text);
    }
    .scenario-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.7;
    }
    .faq-section {
      padding: var(--spacing-lg) 0;
      background: var(--bg);
    }
    .faq-accordion {
      background: transparent;
      border: none;
    }
    .faq-accordion .accordion-item {
      background: #fff;
      border: none;
      border-radius: var(--radius) !important;
      box-shadow: var(--shadow);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-accordion .accordion-item:last-child {
      margin-bottom: 0;
    }
    .faq-accordion .accordion-item:last-child .accordion-button {
      border-radius: var(--radius) !important;
    }
    .faq-accordion .accordion-button {
      background: #fff;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      padding: 20px 24px;
      border: none;
      box-shadow: none;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .faq-accordion .accordion-button:focus {
      box-shadow: none;
      outline: none;
    }
    .faq-accordion .accordion-button:not(.collapsed) {
      background: #fff;
      color: var(--primary);
    }
    .faq-accordion .accordion-button::after {
      content: "+";
      background: none;
      width: 28px;
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 300;
      color: var(--text-muted);
      border-radius: 50%;
      background: var(--bg);
      transition: all .25s;
      flex-shrink: 0;
    }
    .faq-accordion .accordion-button:not(.collapsed)::after {
      content: "−";
      color: #fff;
      background: var(--primary);
      transform: rotate(0);
    }
    .faq-accordion .accordion-body {
      background: var(--primary-light);
      border-radius: 0 0 var(--radius) var(--radius);
      padding: 16px 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .cta-banner {
      padding: clamp(48px, 6vw, 72px) 0;
      background: var(--primary-light);
      border-top: 1px solid rgba(59, 130, 246, .08);
    }
    .cta-inner {
      text-align: center;
      max-width: 560px;
      margin: 0 auto;
    }
    .cta-inner h2 {
      font-size: clamp(22px, 3vw, 30px);
      font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
    }
    .cta-inner p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 18px;
    }
    .cta-inner a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 15px;
      font-weight: 500;
      color: var(--primary);
      border-bottom: 2px solid rgba(59, 130, 246, .25);
      padding-bottom: 2px;
      transition: border-color .2s, color .2s;
    }
    .cta-inner a:hover {
      color: var(--primary-dark);
      border-color: var(--primary-dark);
    }
    .site-footer {
      background: #FBFCFD;
      border-top: 1px solid var(--border);
      padding: 48px 0 32px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
    }
    .footer-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 0;
      max-width: 280px;
    }
    .footer-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 10px;
    }
    .footer-title::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 24px;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      font-size: 14px;
      color: var(--text-muted);
      transition: color .2s, padding-left .2s;
    }
    .footer-links a:hover {
      color: var(--primary);
      padding-left: 3px;
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 32px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-bottom a {
      color: var(--text-muted);
    }
    .footer-bottom a:hover {
      color: var(--primary);
    }
    @media (max-width: 991.98px) {
      .nav-links {
        gap: 16px;
      }
      .nav-links > a {
        font-size: 14px;
      }
      .hero-section .container {
        min-height: auto;
      }
      .hero-card img {
        min-height: 260px;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 767.98px) {
      .nav-links,
      .nav-right .search-wrap,
      .nav-right .nav-cta {
        display: none;
      }
      .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin-left: auto;
      }
      .nav-right {
        margin-left: auto;
      }
      .site-header .container {
        gap: 12px;
      }
      .brand-logo {
        font-size: 18px;
      }
      .logo-mark {
        width: 30px;
        height: 30px;
        font-size: 13px;
      }
      .hero-section {
        padding-top: calc(64px + 32px);
      }
      .hero-section .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .hero-card {
        margin-top: 28px;
      }
      .hero-card img {
        min-height: 200px;
      }
      .hero-actions .btn {
        flex: 1;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .stat-item strong {
        font-size: 28px;
      }
      .feature-card {
        padding: 24px 20px;
      }
      .topic-item {
        flex-wrap: wrap;
        padding: 16px;
        min-height: auto;
        gap: 14px;
      }
      .topic-thumb {
        width: 64px;
        height: 64px;
      }
      .topic-arrow {
        display: none;
      }
      .process-steps {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .faq-accordion .accordion-button {
        font-size: 14px;
        padding: 18px 18px;
      }
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .site-footer {
        padding: 40px 0 24px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .mobile-menu {
        padding: 16px 20px 20px;
      }
      .mobile-menu-bottom {
        flex-direction: column;
      }
      .mobile-menu-bottom input {
        width: 100%;
      }
      .mobile-menu-bottom .btn {
        width: 100%;
      }
    }
    @media (max-width: 520px) {
      .hero-subtitle {
        font-size: 15px;
      }
      .hero-badge {
        font-size: 12px;
        padding: 5px 10px;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }
      .stat-item {
        padding: 12px 4px;
      }
      .stat-item strong {
        font-size: 24px;
      }
      .stat-item span {
        font-size: 13px;
      }
      .topic-content h3 {
        font-size: 15px;
      }
      .topic-content p {
        font-size: 13px;
      }
      .btn {
        padding: 0 20px;
        height: 42px;
        font-size: 14px;
      }
    }