/* roulang page: index */
:root{
  --primary:#1F5EDC;
  --primary-dark:#1648A8;
  --primary-soft:#EAF1FF;
  --accent:#14B8A6;
  --warm:#F59E0B;
  --warm-dark:#DC8A05;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --text:#111827;
  --muted:#5B6B84;
  --border:#E3E9F2;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-block:20px;
  --shadow-sm:0 2px 8px rgba(16,24,40,.05);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 16px 40px rgba(16,24,40,.12);
  --space-section:72px;
  --space-section-m:48px;
  --font-stack:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-dark);text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
h1,h2,h3,h4{font-weight:700;color:var(--text);margin:0 0 14px;line-height:1.35;letter-spacing:-.01em}
h1{font-size:42px;font-weight:800}
h2{font-size:30px}
h3{font-size:21px}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:22px}
button{font-family:inherit}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:999}
.skip-link:focus{left:0}
.grid-container{max-width:1180px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto}
.section{padding:var(--space-section) 0}
.section--tight{padding:52px 0}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center}
.section-head p{color:var(--muted);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid #D5E3FF;border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.muted{color:var(--muted)}
.small{font-size:14px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-md)}
.btn-warm{background:var(--warm);color:#fff;box-shadow:var(--shadow-sm)}
.btn-warm:hover{background:var(--warm-dark);color:#fff;box-shadow:var(--shadow-md)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C9DAFB}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 30px;font-size:17px}
.btn-block{width:100%}
.btn i{font-size:15px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.topbar-row{padding:12px 0;border-bottom:1px solid var(--border)}
.topbar-inner{display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary) 0%,#3C7BEE 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px;
  box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.header-search{display:flex;align-items:center;gap:8px;flex:1 1 auto;max-width:460px;margin-left:auto}
.header-search input{
  flex:1 1 auto;height:44px;border:1px solid var(--border);border-radius:var(--radius-btn);
  padding:0 16px;font-size:14px;color:var(--text);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.header-search input::placeholder{color:#98A6BC}
.header-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,94,220,.14);outline:none}
.topbar-cta{flex:0 0 auto}
.channel-row{padding:0}
.channel-list{
  display:flex;align-items:center;gap:8px;list-style:none;margin:0;padding:8px 0;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-list::-webkit-scrollbar{display:none}
.channel-list li{flex:0 0 auto}
.channel-list a{
  display:inline-block;padding:8px 18px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--muted);background:#fff;
  border:1px solid transparent;text-decoration:none;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.channel-list a:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none}
.channel-list a.is-active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:var(--shadow-sm)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:68px 0 76px;
  background-image:linear-gradient(100deg,rgba(246,248,252,.97) 0%,rgba(246,248,252,.9) 45%,rgba(234,241,255,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.hero h1{font-size:44px;margin-bottom:18px}
.hero-sub{font-size:18px;color:var(--muted);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust-row{list-style:none;display:flex;flex-wrap:wrap;gap:12px 26px;padding:0;margin:0}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.trust-row i{color:var(--accent);font-size:14px}
.hero-media{position:relative}
.hero-media img{width:100%;border-radius:var(--radius-block);box-shadow:var(--shadow-lg);border:1px solid #fff;object-fit:cover;aspect-ratio:4/3}
.hero-badge{
  position:absolute;left:-14px;bottom:26px;background:#fff;border:1px solid var(--border);
  border-radius:14px;box-shadow:var(--shadow-md);padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.hero-badge i{color:var(--accent);font-size:18px}
.hero-badge strong{display:block;font-size:15px;line-height:1.2}
.hero-badge span{font-size:12px;color:var(--muted)}

/* ---------- Value cards ---------- */
.value-grid{margin-top:-8px}
.value-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .2s ease,box-shadow .2s ease;
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.value-card h3{margin-bottom:10px}
.value-card p{color:var(--muted);font-size:15px;margin:0}
.value-icon{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:18px;margin-bottom:16px;
}
.value-icon.accent{background:#E4F8F5;color:var(--accent)}
.value-icon.warm{background:#FEF3E2;color:var(--warm-dark)}
.value-card--media{display:flex;gap:22px;align-items:center;padding:24px}
.value-card--media img{width:180px;flex:0 0 180px;border-radius:12px;object-fit:cover;aspect-ratio:4/3}
.value-media-body{flex:1 1 auto}

/* ---------- Orbit ---------- */
.shots{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.orbit{border-radius:var(--radius-block);overflow:hidden;box-shadow:var(--shadow-md);background:#fff;border:1px solid var(--border)}
.orbit-container{background:#F1F5FC}
.orbit-slide{background:#F1F5FC}
.slide-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:0;align-items:center}
.slide-inner img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.slide-copy{padding:40px 44px}
.slide-copy h3{margin-bottom:10px;font-size:22px}
.slide-copy p{color:var(--muted);margin:0;font-size:15px}
.orbit-previous,.orbit-next{color:var(--primary);background:rgba(255,255,255,.9);border:1px solid var(--border);border-radius:50%;width:42px;height:42px;line-height:40px;top:calc(50% - 21px)}
.orbit-previous:hover,.orbit-next:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.orbit-bullets{display:flex;justify-content:center;gap:10px;padding:18px 0 4px;margin:0}
.orbit-bullets button{width:10px;height:10px;border-radius:50%;background:#C6D4EC;border:none;padding:0;margin:0;transition:all .2s ease}
.orbit-bullets button.is-active{background:var(--primary);width:26px;border-radius:999px}
.orbit-bullets button:hover{background:var(--primary-dark)}

/* ---------- Requirements ---------- */
.req-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);margin:0}
.req-table thead th{background:#EEF4FF;color:var(--primary-dark);font-size:14px;font-weight:700;text-align:left;padding:14px 18px;border-bottom:1px solid var(--border)}
.req-table tbody td{padding:14px 18px;border-bottom:1px solid var(--border);font-size:15px;color:var(--text)}
.req-table tbody tr:nth-child(even) td{background:#FAFCFF}
.req-table tbody tr:last-child td{border-bottom:none}
.req-table td:first-child{font-weight:600;color:var(--text);width:26%}
.req-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-sm);height:100%}
.req-card h3{font-size:18px}
.req-card ul{margin:0;padding-left:20px;color:var(--muted);font-size:15px}
.req-card ul li{margin-bottom:6px}
.req-note{margin-top:22px;display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid #FBE3BC;border-radius:14px;padding:16px 18px}
.req-note i{color:var(--warm-dark);margin-top:3px}
.req-note p{margin:0;font-size:14px;color:var(--muted)}

/* ---------- Reviews ---------- */
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-sm);height:100%;transition:transform .2s ease,box-shadow .2s ease}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;flex:0 0 auto}
.review-name{font-weight:700;font-size:15px;line-height:1.3}
.review-role{font-size:12px;color:var(--muted)}
.stars{color:var(--warm);font-size:13px;letter-spacing:2px;margin-bottom:10px}
.review-card p{margin:0;font-size:15px;color:var(--muted)}

/* ---------- Downloads ---------- */
.dl-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius-block);padding:36px;box-shadow:var(--shadow-md)}
.dl-item{display:flex;align-items:center;gap:16px;border:1px solid var(--border);border-radius:var(--radius-card);padding:18px 20px;background:#FBFCFE;height:100%;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.dl-item:hover{border-color:#C9DAFB;box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.dl-item i{font-size:24px;color:var(--primary);width:34px;text-align:center}
.dl-item-body{flex:1 1 auto}
.dl-item-body strong{display:block;font-size:16px}
.dl-item-body span{font-size:13px;color:var(--muted)}
.dl-main{display:flex;flex-wrap:wrap;align-items:center;gap:20px;justify-content:space-between;margin-bottom:26px}
.dl-main-text h3{margin-bottom:6px}
.dl-main-text p{margin:0;color:var(--muted);font-size:15px}

/* ---------- CMS news ---------- */
.news-grid{margin-top:8px}
.cms-news-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;height:100%;transition:transform .2s ease,box-shadow .2s ease}
.cms-news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.cms-news-link{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none}
.cms-news-link:hover{text-decoration:none;color:inherit}
.cms-news-cover{overflow:hidden}
.cms-news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.cms-news-card:hover .cms-news-cover img{transform:scale(1.04)}
.cms-news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.cms-news-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:12px}
.cms-news-category{background:var(--primary-soft);color:var(--primary-dark);border-radius:999px;padding:3px 10px;font-weight:600}
.cms-news-time{color:var(--muted)}
.cms-news-title{font-size:17px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-news-summary{color:var(--muted);font-size:14px;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.cms-news-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary)}
.cms-empty{background:#fff;border:1px dashed #C9DAFB;border-radius:var(--radius-card);padding:40px;text-align:center;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion{border:none;background:transparent}
.accordion-item{border:1px solid var(--border);border-radius:14px;background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm)}
.accordion-title{background:#fff;border:none;border-bottom:none;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);position:relative}
.accordion-title::before{content:"\002B";position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--primary);font-size:20px;font-weight:400;line-height:1;transition:transform .18s ease}
.accordion-item.is-active .accordion-title::before{content:"\2212"}
.accordion-title:hover{background:var(--primary-soft);color:var(--primary-dark)}
.accordion-content{padding:4px 22px 20px;color:var(--muted);font-size:15px;background:#fff}
.accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta-block{
  background:linear-gradient(120deg,#1B54C6 0%,#1F5EDC 55%,#2E7BE0 100%);
  border-radius:var(--radius-block);padding:48px;color:#fff;box-shadow:var(--shadow-lg);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.cta-block h2{color:#fff;margin-bottom:10px;font-size:28px}
.cta-block p{color:rgba(255,255,255,.86);margin:0;max-width:560px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.back-top{display:flex;justify-content:center;margin-top:36px}
.back-top a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.back-top a:hover{color:var(--primary)}

/* ---------- Footer ---------- */
.site-footer{background:#0F2444;color:#C7D4E8;padding:60px 0 28px;margin-top:var(--space-section)}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:800}
.footer-about{font-size:14px;color:#9FB2CC;max-width:300px;margin:0}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:10px}
.footer-list a{color:#C7D4E8;font-size:14px;text-decoration:none}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8FA3BE}
.footer-bottom a{color:#8FA3BE}
.footer-bottom a:hover{color:#fff}
.footer-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.08);border-radius:999px;padding:5px 12px;font-size:12px;color:#D5E3FF;margin-bottom:14px}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  h1{font-size:34px}
  .hero h1{font-size:34px}
  h2{font-size:26px}
  .hero{padding:52px 0 58px}
  .hero-media{margin-top:34px}
  .slide-inner{grid-template-columns:1fr}
  .slide-copy{padding:26px 28px}
  .value-card--media img{width:150px;flex-basis:150px}
  .section{padding:56px 0}
  .cta-block{padding:36px}
}
@media screen and (max-width:767px){
  .header-search{display:none}
  .topbar-cta .btn{height:42px;padding:0 16px;font-size:14px}
  .brand-sub{display:none}
  h1{font-size:29px}
  .hero h1{font-size:29px}
  h2{font-size:24px}
  h3{font-size:19px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .value-card--media{flex-direction:column;align-items:flex-start}
  .value-card--media img{width:100%;flex-basis:auto}
  .section{padding:var(--space-section-m) 0}
  .cta-block{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .dl-panel{padding:24px 20px}
  .req-table thead{display:none}
  .req-table,.req-table tbody,.req-table tr,.req-table td{display:block;width:100%}
  .req-table tbody td{border-bottom:none;padding:8px 18px}
  .req-table tbody td:first-child{width:100%;padding-top:16px;color:var(--primary-dark);font-size:13px;letter-spacing:.03em}
  .req-table tbody tr{border-bottom:1px solid var(--border);padding-bottom:12px}
  .req-table tbody tr:last-child{border-bottom:none}
  .hero-badge{left:12px;bottom:12px;padding:10px 12px}
  .orbit-previous,.orbit-next{width:36px;height:36px;line-height:34px}
}

/* roulang page: article */
:root{
  --primary:#1F5EDC;
  --primary-dark:#1648A8;
  --primary-soft:#EAF1FF;
  --accent:#14B8A6;
  --warm:#F59E0B;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --text:#111827;
  --muted:#5B6B84;
  --border:#E3E9F2;
  --danger:#D92D20;
  --success:#12B76A;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(16,24,40,.05);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 16px 40px rgba(16,24,40,.12);
  --section-gap:72px;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--primary-dark);text-decoration:underline;}
a:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,94,220,.25);border-radius:6px;}
h1,h2,h3,h4{line-height:1.35;color:var(--text);margin:0 0 .6em;font-weight:700;}
p{margin:0 0 1.1em;}
ul,ol{padding-left:1.25em;}
button{font-family:inherit;}
input,button,select,textarea{font-size:inherit;}

.grid-container{max-width:1180px;padding-left:20px;padding-right:20px;}
.grid-container.full{padding-left:0;padding-right:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--border);
}
.topbar-row{background:transparent;}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:68px;
  padding:10px 0;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),#3D7BEE);
  color:#fff;font-size:18px;
  box-shadow:0 6px 16px rgba(31,94,220,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:19px;font-weight:800;color:var(--text);letter-spacing:.2px;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.6px;}
.header-search{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  gap:8px;
  max-width:520px;
  margin-left:auto;
}
.header-search input[type="search"]{
  flex:1 1 auto;
  height:44px;
  margin:0;
  padding:0 16px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:#fff;
  color:var(--text);
  box-shadow:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.header-search input[type="search"]::placeholder{color:#93A1B7;}
.header-search input[type="search"]:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,94,220,.15);
  outline:none;
}
.topbar-cta{flex:0 0 auto;}

.channel-row{border-top:1px solid var(--border);background:#FBFCFE;}
.channel-list{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0;
  padding:10px 0;
  list-style:none;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list li{flex:0 0 auto;}
.channel-list a{
  display:inline-block;
  padding:8px 16px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  background:#fff;
  border:1px solid var(--border);
  white-space:nowrap;
  transition:all .18s ease;
}
.channel-list a:hover{
  color:var(--primary-dark);
  background:var(--primary-soft);
  border-color:#CFDFFF;
  text-decoration:none;
}
.channel-list a.is-active{
  color:#fff;
  background:var(--primary);
  border-color:var(--primary);
  box-shadow:0 6px 14px rgba(31,94,220,.25);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 24px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease;
  text-align:center;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,94,220,.28);}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-md);}
.btn-outline{background:#fff;color:var(--primary);border-color:#C8D9FA;}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary);}
.btn-warm{background:var(--warm);color:#fff;box-shadow:0 6px 16px rgba(245,158,11,.28);}
.btn-warm:hover{background:#DD8A05;color:#fff;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn-block{width:100%;}

/* ---------- badges & tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:var(--primary-soft);color:var(--primary-dark);
}
.tag-accent{background:#E6FAF7;color:#0E8C7F;}
.tag-warm{background:#FFF4E0;color:#B57500;}
.badge-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{
  background:#fff;
  border-bottom:1px solid var(--border);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0;padding:14px 0;list-style:none;
  font-size:13.5px;color:var(--muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li::after{content:"/";color:#B9C6DA;}
.breadcrumb li:last-child::after{display:none;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--primary);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52vw;}

/* ---------- article layout ---------- */
.article-shell{padding:44px 0 8px;}
.article-wrap{max-width:820px;margin:0 auto;}
.article-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:38px 40px 30px;
}
.article-eyebrow{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px;}
.article-title{
  font-size:38px;
  font-weight:800;
  letter-spacing:-.4px;
  margin:0 0 18px;
  line-height:1.3;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  padding:14px 0 20px;
  border-bottom:1px dashed var(--border);
  margin-bottom:26px;
  font-size:14px;color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:8px;}
.article-meta i{color:var(--primary);}

.article-content{font-size:16px;line-height:1.8;color:var(--text);word-break:break-word;}
.article-content > *:first-child{margin-top:0;}
.article-content h2{
  font-size:25px;font-weight:800;margin:2em 0 .8em;
  padding-left:14px;border-left:4px solid var(--primary);
  line-height:1.4;
}
.article-content h3{font-size:19.5px;font-weight:700;margin:1.6em 0 .6em;}
.article-content h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em;}
.article-content p{margin:0 0 1.2em;}
.article-content ul,.article-content ol{margin:0 0 1.3em;padding-left:1.4em;}
.article-content li{margin-bottom:.5em;}
.article-content img{border-radius:var(--radius-md);margin:1.4em auto;box-shadow:var(--shadow-sm);}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-content strong{font-weight:700;}
.article-content blockquote{
  margin:1.5em 0;padding:16px 20px;
  background:var(--primary-soft);
  border-left:4px solid var(--primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#25344F;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content code{
  background:#F1F5FB;border:1px solid var(--border);
  border-radius:6px;padding:2px 6px;font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:#1B3A6B;
}
.article-content pre{
  background:#F4F7FD;border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:16px 18px;overflow-x:auto;margin:1.4em 0;
}
.article-content pre code{background:none;border:none;padding:0;}
.article-content table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;margin:1.5em 0;
  font-size:14.5px;
  -webkit-overflow-scrolling:touch;
}
.article-content table thead{background:var(--primary-soft);}
.article-content table th,
.article-content table td{
  border:1px solid var(--border);
  padding:10px 14px;text-align:left;white-space:nowrap;
}
.article-content table tbody tr:nth-child(even){background:#FAFCFF;}
.article-content hr{border:none;border-top:1px solid var(--border);margin:2em 0;}

.empty-state{
  text-align:center;padding:52px 24px;
  background:#FAFCFF;border:1px dashed #C8D9FA;border-radius:var(--radius-md);
}
.empty-state i{font-size:34px;color:#9DB8EE;margin-bottom:14px;display:block;}
.empty-state h3{font-size:20px;margin-bottom:8px;}
.empty-state p{color:var(--muted);margin-bottom:20px;}

.article-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:34px;padding-top:26px;border-top:1px solid var(--border);
}

/* ---------- sections ---------- */
.section{padding:var(--section-gap) 0 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{font-size:30px;font-weight:800;margin-bottom:10px;}
.section-head p{color:var(--muted);margin:0;}

/* ---------- FAQ ---------- */
.faq-block{
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:28px 30px;
}
.faq-block .accordion{border:none;background:transparent;margin:0;}
.faq-block .accordion-item{border:none;margin-bottom:12px;}
.faq-block .accordion-title{
  border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#FAFCFF;color:var(--text);
  font-size:15.5px;font-weight:600;
  padding:15px 44px 15px 18px;
  position:relative;transition:all .18s ease;
}
.faq-block .accordion-title:hover{background:var(--primary-soft);border-color:#CFDFFF;color:var(--primary-dark);}
.faq-block .accordion-title::before{
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:13px;transition:transform .18s ease;
}
.faq-block .accordion-item.is-active .accordion-title{
  background:var(--primary);border-color:var(--primary);color:#fff;
}
.faq-block .accordion-item.is-active .accordion-title::before{color:#fff;transform:translateY(-50%) rotate(180deg);}
.faq-block .accordion-content{
  border:1px solid var(--border);border-top:none;
  border-radius:0 0 var(--radius-sm) var(--radius-sm);
  color:var(--muted);font-size:15px;padding:16px 18px;background:#fff;
}
.faq-block .accordion-content p:last-child{margin-bottom:0;}

/* ---------- related ---------- */
.related-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-md);box-shadow:var(--shadow-sm);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#CFDFFF;}
.related-cover{width:100%;height:160px;object-fit:cover;background:#EDF2FA;}
.related-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.related-body h3{font-size:17px;margin:0;line-height:1.5;}
.related-body h3 a{color:var(--text);}
.related-body h3 a:hover{color:var(--primary);text-decoration:none;}
.related-body p{margin:0;font-size:14px;color:var(--muted);line-height:1.7;}
.related-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--muted);}
.related-more{margin-top:auto;font-size:14px;font-weight:600;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--section-gap);
  background:linear-gradient(120deg,#1F5EDC,#2E6FE8 55%,#14B8A6 160%);
  border-radius:var(--radius-lg);
  padding:44px 40px;
  color:#fff;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  box-shadow:0 18px 40px rgba(31,94,220,.24);
}
.cta-band h2{color:#fff;font-size:27px;margin:0 0 8px;}
.cta-band p{color:rgba(255,255,255,.9);margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.cta-band .btn-light{background:#fff;color:var(--primary-dark);}
.cta-band .btn-light:hover{background:#F2F6FF;color:var(--primary-dark);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--section-gap);
  background:#fff;
  border-top:1px solid var(--border);
  padding:56px 0 24px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand .brand-name{font-size:18px;font-weight:800;}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  background:#E6FAF7;color:#0E8C7F;font-size:13px;font-weight:600;
  margin-bottom:14px;
}
.footer-about{font-size:14px;color:var(--muted);line-height:1.75;margin:0;max-width:340px;}
.site-footer h4{font-size:15px;font-weight:700;margin:0 0 14px;color:var(--text);}
.footer-list{list-style:none;margin:0;padding:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:var(--muted);font-size:14px;}
.footer-list a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:36px;padding-top:20px;
  border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:var(--muted);
}
.footer-bottom a{color:var(--primary);}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  :root{--section-gap:60px;}
  .article-title{font-size:33px;}
  .brand-sub{display:none;}
  .header-search{max-width:360px;}
}
@media screen and (max-width:860px){
  .topbar-inner{flex-wrap:wrap;gap:12px;row-gap:10px;}
  .header-search{order:3;flex:1 1 100%;max-width:none;margin-left:0;}
  .topbar-cta{margin-left:auto;}
  .article-card{padding:28px 22px 24px;}
  .faq-block{padding:22px 18px;}
}
@media screen and (max-width:640px){
  :root{--section-gap:48px;}
  body{font-size:16px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .article-shell{padding:28px 0 0;}
  .article-title{font-size:27px;letter-spacing:0;}
  .article-content{font-size:16px;line-height:1.8;}
  .article-content h2{font-size:21px;}
  .article-content h3{font-size:18.5px;}
  .section-head h2{font-size:24px;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .topbar-cta .btn-sm{width:auto;}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .article-actions .btn{width:100%;}
  .breadcrumb .current{max-width:60vw;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --primary:#1F5EDC;
  --primary-dark:#1648A8;
  --primary-soft:#EAF1FF;
  --accent:#14B8A6;
  --warm:#F59E0B;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --text:#111827;
  --muted:#5B6B84;
  --border:#E3E9F2;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(16,24,40,.05);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 16px 40px rgba(16,24,40,.12);
  --container:1180px;
  --font-cn:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover,a:focus{color:var(--primary-dark);text-decoration:underline;}
h1,h2,h3,h4,h5,h6{font-family:var(--font-cn);color:var(--text);font-weight:700;line-height:1.35;margin:0 0 .6em;letter-spacing:-.01em;}
h1{font-size:40px;font-weight:800;}
h2{font-size:30px;font-weight:800;}
h3{font-size:21px;font-weight:700;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.25em;}
li{margin-bottom:.4em;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px var(--primary-soft);border-radius:4px;}
.grid-container{max-width:var(--container);padding-left:20px;padding-right:20px;}
.section{padding:72px 0;}
.section--tight{padding:48px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head p{color:var(--muted);font-size:16px;margin-bottom:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary);background:var(--primary-soft);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
/* ---------- header ---------- */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:relative;z-index:30;}
.topbar-row{border-bottom:1px solid var(--border);}
.topbar-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;padding:12px 0;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:19px;font-weight:800;color:var(--text);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.12em;text-transform:uppercase;}
.header-search{
  display:flex;align-items:center;gap:10px;flex:1 1 auto;max-width:460px;margin-left:auto;
}
.header-search input{
  height:46px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:#fff;padding:0 16px;font-size:15px;margin:0;box-shadow:none;
}
.header-search input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);}
.topbar-cta{flex:0 0 auto;}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover,.btn:focus{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-sm{height:42px;padding:0 16px;font-size:14px;}
.btn-lg{height:56px;padding:0 30px;font-size:16px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover,.btn-primary:focus{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-md);}
.btn-warm{background:var(--warm);color:#fff;box-shadow:var(--shadow-sm);}
.btn-warm:hover,.btn-warm:focus{background:#E08C08;color:#fff;box-shadow:var(--shadow-md);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--primary-soft);color:var(--primary-dark);}
.btn-block{width:100%;}
/* ---------- channel nav ---------- */
.channel-row{background:var(--surface);}
.channel-list{
  display:flex;align-items:center;gap:8px;list-style:none;
  margin:0;padding:8px 0;overflow-x:auto;scrollbar-width:none;white-space:nowrap;
}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list li{margin:0;}
.channel-list a{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border-radius:999px;font-size:14.5px;font-weight:600;color:var(--muted);
  background:transparent;text-decoration:none;transition:background-color .18s ease,color .18s ease;
}
.channel-list a:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.channel-list a.is-active{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
/* ---------- page banner ---------- */
.page-banner{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background-image:linear-gradient(100deg,rgba(17,24,39,.88),rgba(31,94,220,.78)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  color:#fff;padding:52px 44px;box-shadow:var(--shadow-md);
}
.page-banner h1{color:#fff;font-size:36px;margin-bottom:14px;max-width:860px;}
.page-banner p{color:rgba(255,255,255,.88);font-size:16.5px;max-width:780px;margin-bottom:22px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:0;}
.banner-tags li{margin:0;}
.banner-tags span{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:13px;font-weight:600;padding:6px 13px;border-radius:999px;
}
.banner-wrap{padding-top:36px;}
.breadcrumb{
  background:var(--surface);border-bottom:1px solid var(--border);
  font-size:13.5px;color:var(--muted);
}
.breadcrumb .grid-container{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:14px;padding-bottom:14px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#B7C2D6;}
.breadcrumb .current{color:var(--primary);font-weight:600;}
/* ---------- layout: sidebar + content ---------- */
.layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:28px;align-items:start;}
.sidebar{position:sticky;top:20px;display:flex;flex-direction:column;gap:20px;}
.panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);padding:22px;
}
.panel h3{font-size:17px;margin-bottom:12px;}
.panel p{font-size:14.5px;color:var(--muted);margin-bottom:0;line-height:1.8;}
.toc{list-style:none;margin:0;padding:0;}
.toc li{margin:0;}
.toc a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:var(--radius-sm);font-size:14.5px;font-weight:600;
  color:var(--text);text-decoration:none;
}
.toc a:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.toc a i{color:var(--primary);font-size:12px;}
.filter-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);border:1px solid transparent;
}
.tag--accent{background:rgba(20,184,166,.12);color:#0E8F81;}
.tag--warm{background:rgba(245,158,11,.14);color:#B4720A;}
.tag--plain{background:#F1F4F9;color:var(--muted);}
.side-note{
  background:linear-gradient(160deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;border:none;
}
.side-note h3{color:#fff;}
.side-note p{color:rgba(255,255,255,.86);}
.side-note .btn{margin-top:16px;}
/* ---------- resource cards ---------- */
.stack{display:flex;flex-direction:column;gap:20px;}
.res-card{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:0;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.res-card__media{position:relative;background:#EEF2F8;min-height:100%;}
.res-card__media img{width:100%;height:100%;object-fit:cover;}
.res-card__body{padding:22px 24px;}
.res-card__body h3{font-size:19px;margin-bottom:8px;}
.res-card__body p{font-size:14.5px;color:var(--muted);margin-bottom:14px;}
.res-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.res-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.res-actions .link-more{font-size:14px;font-weight:700;}
/* ---------- steps quick strip ---------- */
.step-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.step-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:20px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.step-num{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary-dark);font-weight:800;font-size:15px;margin-bottom:12px;
}
.step-item h3{font-size:16.5px;margin-bottom:6px;}
.step-item p{font-size:14px;color:var(--muted);margin-bottom:0;}
/* ---------- table ---------- */
.table-wrap{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.spec-table{width:100%;border-collapse:collapse;margin:0;}
.spec-table th,.spec-table td{padding:15px 18px;font-size:14.5px;text-align:left;border-bottom:1px solid var(--border);}
.spec-table thead th{
  background:var(--primary-soft);color:var(--primary-dark);font-weight:700;font-size:14px;
  letter-spacing:.02em;white-space:nowrap;
}
.spec-table tbody tr:nth-child(even){background:#FAFBFE;}
.spec-table tbody tr:hover{background:var(--primary-soft);}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table td strong{color:var(--text);}
.spec-table .cell-ok{color:#0E8F81;font-weight:600;}
/* ---------- FAQ ---------- */
.accordion{border:none;background:transparent;}
.accordion-item{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-sm);}
.accordion-title{
  border:none;border-bottom:1px solid transparent;padding:18px 54px 18px 22px;
  font-size:16px;font-weight:700;color:var(--text);background:var(--surface);position:relative;
  transition:background-color .18s ease,color .18s ease;
}
.accordion-title:hover,.accordion-title:focus{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--primary);transition:transform .18s ease;
}
.is-active>.accordion-title::before{content:"\f068";}
.accordion-content{padding:4px 22px 20px;border-top:1px solid var(--border);}
.accordion-content p{font-size:15px;color:var(--muted);margin:14px 0 0;}
/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,#12326F 0%,var(--primary) 100%);
  border-radius:var(--radius-lg);color:#fff;padding:48px 44px;
  box-shadow:var(--shadow-lg);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.86);max-width:680px;margin-bottom:24px;}
.dl-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;}
.dl-card{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius-md);padding:18px;color:#fff;
}
.dl-card i{font-size:20px;color:#fff;margin-bottom:10px;display:block;}
.dl-card strong{display:block;font-size:15.5px;margin-bottom:4px;}
.dl-card span{font-size:13px;color:rgba(255,255,255,.78);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
/* ---------- footer ---------- */
.site-footer{background:#0F1B33;color:#C7D2E5;padding:60px 0 26px;margin-top:12px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand .brand-name{color:#fff;font-size:19px;font-weight:800;}
.footer-badge{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;
  color:#7FE3D8;background:rgba(20,184,166,.14);border:1px solid rgba(20,184,166,.35);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.footer-about{font-size:14px;color:#93A3BE;max-width:340px;margin-bottom:0;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:#C7D2E5;font-size:14.5px;}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13.5px;color:#8296B5;
}
.footer-bottom a{color:#8296B5;}
.footer-bottom a:hover{color:#fff;}
/* ---------- responsive ---------- */
@media (max-width:1023px){
  h1{font-size:32px;}
  h2{font-size:26px;}
  .page-banner{padding:40px 28px;border-radius:var(--radius-md);}
  .page-banner h1{font-size:30px;}
  .layout{grid-template-columns:1fr;}
  .sidebar{position:static;}
  .step-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .res-card{grid-template-columns:170px minmax(0,1fr);}
  .section{padding:56px 0;}
  .header-search{max-width:280px;}
}
@media (max-width:767px){
  .topbar-inner{flex-wrap:wrap;gap:14px;padding:14px 0;}
  .header-search{order:3;flex:1 1 100%;max-width:none;margin-left:0;}
  .topbar-cta{margin-left:auto;}
  .channel-list a{height:38px;padding:0 15px;font-size:13.5px;}
  .page-banner{padding:32px 20px;}
  .page-banner h1{font-size:26px;}
  .page-banner p{font-size:15px;}
  .res-card{grid-template-columns:1fr;}
  .res-card__media{height:190px;}
  .step-strip{grid-template-columns:1fr;}
  .dl-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 22px;}
  .cta-band h2{font-size:23px;}
  .section{padding:48px 0;}
  .spec-table thead{display:none;}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%;}
  .spec-table tr{border-bottom:10px solid var(--bg);padding:6px 0;}
  .spec-table td{
    display:flex;justify-content:space-between;gap:14px;border-bottom:1px dashed var(--border);
    padding:11px 16px;
  }
  .spec-table td:last-child{border-bottom:none;}
  .spec-table td::before{content:attr(data-label);font-weight:700;color:var(--muted);font-size:13.5px;}
  .spec-table tbody tr:hover{background:transparent;}
}
@media (max-width:520px){
  h1{font-size:26px;}
  .brand-sub{display:none;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .header-search .btn-sm{width:auto;}
  .res-actions .btn,.res-actions .link-more{width:100%;}
  .res-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --primary:#1F5EDC;
  --primary-dark:#1648A8;
  --primary-soft:#EAF1FF;
  --accent:#14B8A6;
  --warm:#F59E0B;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --text:#111827;
  --muted:#5B6B84;
  --border:#E3E9F2;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-block:20px;
  --shadow-sm:0 2px 8px rgba(16,24,40,.05);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 16px 40px rgba(16,24,40,.12);
  --space-section:72px;
  --font:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  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%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--primary-dark);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
h1,h2,h3,h4{margin:0 0 .5em;font-weight:700;line-height:1.3;color:var(--text);letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.15rem;}
li{margin-bottom:.4em;}
.grid-container{max-width:1180px;padding-left:20px;padding-right:20px;}
.show-for-sr{position:absolute!important;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 顶部双层导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--border);}
.topbar-row{border-bottom:1px solid var(--border);}
.topbar-inner{display:flex;align-items:center;gap:20px;min-height:70px;padding:10px 0;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--text);text-decoration:none;}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(140deg,var(--primary),var(--primary-dark));color:#fff;font-size:18px;box-shadow:var(--shadow-sm);flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.header-search{display:flex;align-items:center;gap:8px;flex:1 1 auto;max-width:520px;margin-left:auto;}
.header-search input[type="search"]{height:44px;margin:0;border:1px solid var(--border);border-radius:var(--radius-btn);background:#fff;box-shadow:none;font-size:14px;color:var(--text);padding:0 14px;}
.header-search input[type="search"]::placeholder{color:#93A1B7;}
.header-search input[type="search"]:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);}
.topbar-cta{flex:0 0 auto;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;text-decoration:none;margin:0;}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-sm{height:44px;padding:0 16px;font-size:14px;}
.btn-lg{height:54px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-md);}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-warm{background:var(--warm);color:#fff;box-shadow:var(--shadow-sm);}
.btn-warm:hover{background:#E08B08;color:#fff;box-shadow:var(--shadow-md);}
.btn-ghost{background:#fff;color:var(--text);border-color:var(--border);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary);}
.btn-block{width:100%;}

/* 第二行频道 tabs */
.channel-row{background:#fff;}
.channel-list{list-style:none;display:flex;align-items:center;gap:10px;margin:0;padding:9px 0;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list li{margin:0;flex:0 0 auto;}
.channel-list a{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 18px;border-radius:999px;font-size:14.5px;font-weight:600;color:var(--muted);background:#F2F5FA;border:1px solid transparent;white-space:nowrap;text-decoration:none;transition:all .18s ease;}
.channel-list a:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.channel-list a.is-active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:var(--shadow-sm);}

/* ============ 主体 ============ */
main{display:block;padding-top:32px;}
.section{padding:var(--space-section) 0;}
.section-tight{padding:48px 0;}
.section-head{max-width:780px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{font-size:31px;margin-bottom:12px;}
.section-head p{color:var(--muted);margin-bottom:0;font-size:15.5px;}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;letter-spacing:.02em;}
.eyebrow i{font-size:12px;}

/* 面包屑 */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--border);}
.breadcrumb{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:13px 0;font-size:13.5px;color:var(--muted);}
.breadcrumb li{margin:0;}
.breadcrumb li+li::before{content:"/";color:#B7C3D6;margin-right:8px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* 分类页 Hero 小横幅 */
.cat-hero{position:relative;border-radius:var(--radius-block);border:1px solid var(--border);box-shadow:var(--shadow-md);overflow:hidden;padding:52px 46px;background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 48%,rgba(234,241,255,.7) 100%),url('/assets/images/backpic/back-2.png') center/cover no-repeat;}
.cat-hero h1{font-size:38px;max-width:820px;margin-bottom:16px;}
.cat-hero .lead{font-size:17px;color:var(--muted);max-width:720px;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:30px;padding-top:24px;border-top:1px solid var(--border);}
.hero-meta div{min-width:120px;}
.hero-meta strong{display:block;font-size:20px;font-weight:800;color:var(--primary-dark);}
.hero-meta span{font-size:13px;color:var(--muted);}
.cat-intro{margin-top:22px;max-width:860px;font-size:15.5px;color:var(--muted);}

/* 卡片矩阵 */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(2,minmax(0,1fr));}
.cat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D3DEF0;}
.cat-card__media{position:relative;aspect-ratio:16/8;background:#EEF2F8;overflow:hidden;}
.cat-card__media img{width:100%;height:100%;object-fit:cover;}
.cat-card__badge{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.94);color:var(--primary-dark);font-size:12.5px;font-weight:700;border-radius:999px;padding:5px 12px;box-shadow:var(--shadow-sm);}
.cat-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.cat-card__body h3{font-size:20px;margin-bottom:8px;}
.cat-card__body p{color:var(--muted);font-size:14.5px;margin-bottom:16px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--primary-dark);background:var(--primary-soft);border-radius:999px;padding:5px 12px;}
.tag.tag-accent{color:#0B7A6E;background:#E4F7F4;}
.tag.tag-warm{color:#8A5A02;background:#FEF3D9;}
.cat-card__foot{margin-top:auto;display:flex;gap:10px;flex-wrap:wrap;}

/* 对比表 */
.table-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow-x:auto;}
table.compare{width:100%;min-width:760px;border-collapse:collapse;margin:0;}
table.compare caption{text-align:left;padding:18px 22px 0;font-size:14px;color:var(--muted);}
table.compare thead th{background:var(--primary-soft);color:var(--primary-dark);font-size:14px;font-weight:700;text-align:left;padding:15px 18px;border-bottom:1px solid var(--border);white-space:nowrap;}
table.compare tbody td{padding:14px 18px;font-size:14.5px;color:var(--muted);border-bottom:1px solid var(--border);vertical-align:top;}
table.compare tbody tr:nth-child(even){background:#FAFBFE;}
table.compare tbody tr:hover{background:var(--primary-soft);}
table.compare tbody th{text-align:left;padding:14px 18px;font-size:14.5px;font-weight:700;color:var(--text);border-bottom:1px solid var(--border);background:#fff;white-space:nowrap;}
table.compare tbody tr:nth-child(even) th{background:#FAFBFE;}
table.compare .yes{color:#0B7A6E;font-weight:700;}
table.compare .no{color:#98A6BC;}
.table-note{font-size:13px;color:var(--muted);margin-top:12px;}
.scroll-hint{display:none;font-size:13px;color:var(--muted);margin-top:10px;}

/* 参数明细 */
.param-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;grid-template-columns:repeat(2,minmax(0,1fr));}
.param-list li{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-sm);padding:18px 20px;margin:0;display:flex;gap:14px;align-items:flex-start;transition:transform .18s ease,box-shadow .18s ease;}
.param-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.param-list i{width:38px;height:38px;flex:0 0 auto;border-radius:11px;background:var(--primary-soft);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:15px;}
.param-list strong{display:block;font-size:15.5px;color:var(--text);margin-bottom:4px;}
.param-list span{font-size:14px;color:var(--muted);line-height:1.65;}

/* 选择建议 */
.advice-grid{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr));}
.advice{background:#fff;border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:14px;padding:22px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease;}
.advice:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.advice.warm{border-left-color:var(--warm);}
.advice.accent{border-left-color:var(--accent);}
.advice h3{font-size:17.5px;margin-bottom:8px;}
.advice p{font-size:14.5px;color:var(--muted);margin-bottom:0;}

/* 内容块：图文 */
.split{display:grid;gap:36px;grid-template-columns:1.05fr .95fr;align-items:center;}
.split img{border-radius:var(--radius-card);box-shadow:var(--shadow-md);width:100%;aspect-ratio:16/10;object-fit:cover;}
.split h2{font-size:29px;}
.split p{color:var(--muted);}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{position:relative;padding-left:30px;margin-bottom:12px;color:var(--text);font-size:15px;}
.check-list li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:2px;color:var(--accent);font-size:13px;}

/* FAQ */
.accordion{border:none;background:transparent;margin:0;}
.accordion-item{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;}
.accordion-title{border:none;background:#fff;padding:18px 54px 18px 22px;font-size:16px;font-weight:700;color:var(--text);position:relative;line-height:1.6;transition:background-color .18s ease,color .18s ease;}
.accordion-title:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.accordion-title::before{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--primary);float:none;margin:0;width:auto;height:auto;line-height:1;transition:transform .18s ease;}
.accordion-title[aria-expanded="true"]{background:var(--primary-soft);color:var(--primary-dark);}
.accordion-title[aria-expanded="true"]::before{content:"\2212";}
.accordion-content{border:none;background:#fff;padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.8;}
.accordion-content p:last-child{margin-bottom:0;}

/* CTA 区块 */
.cta-band{background:linear-gradient(120deg,#1F5EDC 0%,#1648A8 100%);border-radius:var(--radius-block);padding:52px 46px;color:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.08);}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.85);max-width:640px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cta-actions .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.7);}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.platform-grid{display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:28px;}
.platform-item{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);border-radius:14px;padding:16px 18px;display:flex;align-items:center;gap:12px;color:#fff;font-size:14.5px;font-weight:600;}
.platform-item i{font-size:18px;color:#fff;opacity:.9;}

/* 页脚 */
.site-footer{background:#0F2038;color:#C6D2E4;margin-top:var(--space-section);padding:60px 0 0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#2E6BE6,#14B8A6);}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:800;}
.footer-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#9FE8DE;background:rgba(20,184,166,.14);border:1px solid rgba(20,184,166,.32);border-radius:999px;padding:6px 14px;margin-bottom:16px;}
.footer-about{font-size:14px;color:#9FB0C8;line-height:1.75;margin:0;}
.footer-list{list-style:none;margin:0;padding:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:#C6D2E4;font-size:14px;}
.footer-list a:hover{color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.5);}
.footer-bottom{margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8FA1BC;}
.footer-bottom a{color:#9FE8DE;}

/* 返回顶部 */
.to-top{position:fixed;right:20px;bottom:26px;width:46px;height:46px;border-radius:50%;background:#fff;color:var(--primary);border:1px solid var(--border);box-shadow:var(--shadow-md);display:inline-flex;align-items:center;justify-content:center;font-size:16px;z-index:70;transition:transform .18s ease,box-shadow .18s ease;}
.to-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);color:var(--primary-dark);text-decoration:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  :root{--space-section:60px;}
  .topbar-inner{flex-wrap:wrap;gap:12px;}
  .header-search{max-width:none;margin-left:0;order:3;flex:1 1 100%;}
  .topbar-cta{margin-left:auto;}
  .cat-hero{padding:42px 32px;}
  .cat-hero h1{font-size:31px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .advice-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:26px;}
  .split img{aspect-ratio:16/9;}
}
@media screen and (max-width:767px){
  :root{--space-section:48px;}
  body{font-size:16px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .brand-name{font-size:17px;}
  .brand-sub{display:none;}
  .topbar-inner{min-height:0;padding:12px 0;}
  .header-search input[type="search"]{height:42px;}
  .topbar-cta .btn span{display:none;}
  .cat-hero{padding:32px 22px;border-radius:18px;}
  .cat-hero h1{font-size:27px;}
  .cat-hero .lead{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .section-head h2,.split h2,.cta-band h2{font-size:23px;}
  .card-grid{grid-template-columns:1fr;}
  .advice-grid{grid-template-columns:1fr;}
  .param-list{grid-template-columns:1fr;}
  .platform-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 22px;border-radius:18px;}
  .cta-actions .btn{flex:1 1 100%;}
  .scroll-hint{display:block;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media screen and (max-width:479px){
  .cat-hero h1{font-size:24px;}
  .hero-meta{gap:18px;}
  .hero-meta div{min-width:96px;}
  .cat-card__body{padding:18px;}
}

/* roulang page: category3 */
:root{
  --primary:#1F5EDC;
  --primary-dark:#1648A8;
  --primary-soft:#EAF1FF;
  --accent:#14B8A6;
  --accent-soft:#E6FAF7;
  --warm:#F59E0B;
  --warm-soft:#FFF5E3;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --text:#111827;
  --muted:#5B6B84;
  --border:#E3E9F2;
  --radius-btn:10px;
  --radius-card:16px;
  --radius-lg:20px;
  --shadow-sm:0 2px 8px rgba(16,24,40,.05);
  --shadow-md:0 8px 24px rgba(16,24,40,.08);
  --shadow-lg:0 16px 40px rgba(16,24,40,.12);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-card);}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover{color:var(--primary-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0 0 12px;font-weight:800;line-height:1.3;color:var(--text);letter-spacing:-.2px;}
h1{font-size:42px;}
h2{font-size:30px;}
h3{font-size:20px;}
p{margin:0 0 14px;color:var(--muted);}
ul,ol{margin:0;}
input,button,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:var(--container);padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
.show-for-sr{position:absolute!important;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:700;text-decoration:none;cursor:pointer;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--shadow-md);}
.btn-warm{background:var(--warm);color:#fff;box-shadow:var(--shadow-sm);}
.btn-warm:hover{background:#E08C05;color:#fff;box-shadow:var(--shadow-md);}
.btn-outline{background:#fff;color:var(--primary);border-color:#C6D8F7;}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary);}
.btn-ghost{background:transparent;color:var(--primary);border-color:transparent;padding:0 10px;height:40px;}
.btn-ghost:hover{background:var(--primary-soft);}
.btn-sm{height:42px;padding:0 16px;font-size:14.5px;border-radius:9px;}
.btn-lg{height:54px;padding:0 28px;font-size:16.5px;}
.btn-block{width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 1px 0 rgba(16,24,40,.02);}
.topbar-row{background:#fff;}
.topbar-inner{display:flex;align-items:center;gap:18px;min-height:68px;}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;display:grid;place-items:center;font-size:17px;box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.2px;}
.brand-sub{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;}
.header-search{flex:1 1 auto;max-width:470px;margin:0 auto;display:flex;gap:8px;align-items:center;}
.header-search input{
  flex:1 1 auto;height:46px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#FBFCFE;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.header-search input::placeholder{color:#93A1B7;}
.header-search input:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);}
.topbar-cta{flex:0 0 auto;}
.channel-row{border-top:1px solid var(--border);background:#fff;}
.channel-list{display:flex;gap:8px;list-style:none;margin:0;padding:9px 0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list a{
  display:inline-block;padding:9px 16px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--muted);white-space:nowrap;text-decoration:none;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.channel-list a:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.channel-list a.is-active{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{background:#fff;border-bottom:1px solid var(--border);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:13px 0;font-size:13.5px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#B9C4D6;}
.breadcrumb .current{color:var(--primary);font-weight:700;}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0;}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);
  font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;
}
.eyebrow.accent{background:var(--accent-soft);color:#0E8F82;}
.section-head p{font-size:16px;}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  background-color:#EFF4FC;background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);padding:44px 0 60px;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.cat-hero h1{font-size:38px;margin-bottom:16px;}
.hero-sub{font-size:17px;color:#3F4C63;max-width:600px;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-facts{list-style:none;display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:0;}
.hero-facts li{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:8px 15px;font-size:13.5px;font-weight:600;color:#33415A;box-shadow:var(--shadow-sm);
}
.hero-facts i{color:var(--accent);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:320px;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);border:1px solid #fff;
}
.hero-visual .visual-badge{
  position:absolute;left:18px;bottom:-18px;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;
}
.visual-badge strong{display:block;font-size:15px;color:var(--text);}
.visual-badge span{display:block;font-size:12.5px;color:var(--muted);}
.visual-badge .dot{width:34px;height:34px;border-radius:10px;background:var(--accent-soft);color:#0E8F82;display:grid;place-items:center;}

/* ---------- 时间线 ---------- */
.timeline{list-style:none;margin:0;padding:0;position:relative;}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary-soft),var(--border) 70%);
}
.timeline-item{position:relative;padding:0 0 22px 78px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-index{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:16px;
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-sm);
  display:grid;place-items:center;font-weight:800;color:var(--primary);font-size:16px;letter-spacing:.02em;
}
.timeline-body{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.timeline-item:hover .timeline-body{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D5E1F6;}
.timeline-body h3{margin-bottom:8px;font-size:19px;}
.timeline-body p{margin-bottom:12px;}
.timeline-meta{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);font-size:12.5px;font-weight:700;
}
.tag.tag-accent{background:var(--accent-soft);color:#0E8F82;}
.tag.tag-warm{background:var(--warm-soft);color:#A96905;}
.tag.tag-plain{background:#F2F5FA;color:var(--muted);}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);-webkit-overflow-scrolling:touch;
}
table.req-table{width:100%;border-collapse:collapse;min-width:720px;}
.req-table thead th{
  background:var(--primary-soft);color:var(--primary-dark);font-size:14px;font-weight:800;
  text-align:left;padding:15px 20px;border-bottom:1px solid #D8E4F8;white-space:nowrap;
}
.req-table tbody td{
  padding:15px 20px;border-bottom:1px solid var(--border);font-size:14.5px;color:#3F4C63;vertical-align:top;
}
.req-table tbody tr:nth-child(even){background:#FAFCFF;}
.req-table tbody tr:last-child td{border-bottom:none;}
.req-table tbody tr:hover{background:#F3F8FF;}
.req-table td:first-child{font-weight:700;color:var(--text);}
.table-note{margin-top:14px;font-size:13.5px;color:var(--muted);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D5E1F6;}
.card h3{font-size:18px;margin-bottom:8px;}
.card p{margin-bottom:0;font-size:14.5px;}
.card-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);font-size:17px;margin-bottom:14px;
}
.card-icon.warm{background:var(--warm-soft);color:#B87309;}
.card-icon.accent{background:var(--accent-soft);color:#0E8F82;}

.reason-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;}
.reason-visual img{width:100%;height:380px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);}
.reason-list{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.reason-list .card{padding:20px;}

/* ---------- FAQ ---------- */
.accordion{background:transparent;border:none;margin:0;max-width:900px;}
.accordion-item{
  background:var(--surface);border:1px solid var(--border);border-radius:14px;
  margin-bottom:12px;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.accordion-item.is-active{border-color:#C9DBF8;box-shadow:var(--shadow-md);}
.accordion-title{
  display:block;padding:18px 58px 18px 22px;position:relative;
  font-size:16.5px;font-weight:700;color:var(--text);border:none;background:transparent;
  transition:background-color .18s ease,color .18s ease;
}
.accordion-title:hover{background:var(--primary-soft);color:var(--primary-dark);text-decoration:none;}
.accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:20px;font-weight:800;line-height:1;
}
.accordion-title[aria-expanded="true"]::before{content:"−";}
.accordion-content{padding:0 22px 0;background:transparent;border:none;color:var(--muted);}
.accordion-content p{font-size:15px;line-height:1.8;padding-top:0;margin-bottom:0;}
.accordion-item.is-active .accordion-content{padding-bottom:20px;}

/* ---------- 下载 CTA ---------- */
.download-section{padding:72px 0;}
.download-panel{
  background:linear-gradient(135deg,#1F5EDC,#1648A8);
  border-radius:var(--radius-lg);padding:48px 44px;color:#fff;
  box-shadow:var(--shadow-lg);
}
.download-panel h2{color:#fff;font-size:30px;margin-bottom:12px;}
.download-panel p{color:rgba(255,255,255,.85);max-width:640px;margin-bottom:0;}
.download-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;}
.download-actions{display:flex;flex-direction:column;gap:12px;}
.download-actions .btn-outline{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.55);}
.download-actions .btn-outline:hover{background:rgba(255,255,255,.2);color:#fff;border-color:#fff;}
.download-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.8);}
.download-meta span{display:inline-flex;align-items:center;gap:7px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B33;color:#C3CDDF;padding:58px 0 26px;margin-top:0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:800;}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:999px;
  background:rgba(20,184,166,.16);color:#5EE0D2;font-size:12.5px;font-weight:700;margin-bottom:14px;
}
.footer-about{color:#8FA0BC;font-size:14px;max-width:340px;margin-bottom:0;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:10px;}
.footer-list a{color:#B8C4D9;font-size:14.5px;}
.footer-list a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8695AF;
}
.footer-bottom a{color:#A9B8D0;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-md);
  display:grid;place-items:center;color:var(--primary);cursor:pointer;z-index:70;
  opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;
}
.to-top.is-visible{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-3px);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  .cat-hero h1{font-size:32px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-visual img{height:280px;}
  .reason-grid{grid-template-columns:1fr;gap:30px;}
  .reason-visual img{height:300px;}
  .download-layout{grid-template-columns:1fr;gap:28px;}
  .section{padding:56px 0;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  .cat-hero h1{font-size:27px;}
  .topbar-inner{flex-wrap:wrap;gap:10px;padding:12px 0;min-height:auto;}
  .brand{order:1;}
  .topbar-cta{order:2;margin-left:auto;}
  .header-search{order:3;flex:1 0 100%;max-width:none;margin:0;}
  .header-search .btn{height:46px;}
  .hero-visual .visual-badge{position:static;margin-top:14px;}
  .hero-visual img{height:220px;}
  .timeline::before{left:19px;}
  .timeline-item{padding-left:58px;}
  .timeline-index{width:40px;height:40px;border-radius:12px;font-size:13px;}
  .timeline-body{padding:18px;}
  .reason-list{grid-template-columns:1fr;}
  .reason-visual img{height:220px;}
  .download-panel{padding:32px 22px;}
  .download-panel h2{font-size:23px;}
  .download-actions .btn{width:100%;}
  .section{padding:48px 0;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .cat-hero{padding:32px 0 44px;}
  .hero-actions .btn{width:100%;}
  .hero-facts li{font-size:13px;padding:7px 12px;}
}