/* roulang page: index */
:root{
  --primary:#34495E;
  --primary-dark:#2C3E50;
  --accent:#D97B29;
  --accent-dark:#C06A1D;
  --bg:#F6F4F0;
  --bg-alt:#EDEAE4;
  --white:#FFFFFF;
  --title:#2B2B2B;
  --text:#3D3D3D;
  --muted:#6B6B6B;
  --border:#E3DED6;
  --success:#2E7D4F;
  --danger:#C0392B;
  --radius:12px;
  --shadow:0 2px 8px rgba(40,30,20,0.06);
  --shadow-hover:0 8px 24px rgba(40,30,20,0.12);
  --space:4rem;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*, *::before, *::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:var(--space) 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:var(--white)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:1.8rem}
.section-head h2{
  font-size:clamp(1.4rem,2.5vw,1.9rem);
  font-weight:700;
  color:var(--title);
  line-height:1.3;
  position:relative;
  padding-left:.8em;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:50%;transform:translateY(-50%);
  width:4px;height:1.2em;
  background:var(--accent);
  border-radius:2px;
}
.section-sub{color:var(--muted);font-size:.95rem;margin-top:.3rem}
.view-all{color:var(--accent);font-size:.9rem;font-weight:600;white-space:nowrap;transition:color .25s}
.view-all:hover{color:var(--accent-dark)}

/* Header */
.site-header{
  position:relative;
  background:var(--white);
  border-bottom:1px solid var(--border);
  z-index:1000;
}
.site-header.is-sticky{
  position:sticky;
  top:0;
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.header-top-bar{
  background:var(--primary);
  color:#fff;
  font-size:.82rem;
  padding:.4rem 0;
}
.header-top-bar .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.top-contact{
  display:flex;
  gap:1rem;
}
.top-contact span{opacity:.9}
.header-main{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1rem 0;
}
.logo-row{
  display:flex;
  align-items:center;
  gap:.75rem;
  min-width:0;
}
.logo-icon{
  width:46px;height:46px;
  border-radius:12px;
  background:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:1.3rem;
  font-weight:800;
  flex-shrink:0;
  letter-spacing:1px;
}
.logo-text{
  font-size:1.35rem;
  font-weight:800;
  color:var(--title);
  letter-spacing:.5px;
  line-height:1.2;
}
.logo-text small{
  display:block;
  font-size:.72rem;
  font-weight:500;
  color:var(--muted);
  letter-spacing:1px;
  margin-top:2px;
}
.header-right{
  display:flex;
  align-items:center;
  gap:.9rem;
}
.search-box{
  display:flex;
  align-items:center;
  border-bottom:2px solid var(--border);
  transition:border-color .25s;
}
.search-box input{
  border:none;
  background:transparent;
  padding:.5rem .2rem;
  width:180px;
  font-size:.9rem;
  outline:none;
  color:var(--text);
  transition:width .3s;
}
.search-box input:focus{width:220px}
.search-box:focus-within{border-bottom-color:var(--accent)}
.search-box button{
  background:var(--accent);
  border:none;
  color:#fff;
  width:36px;height:36px;
  border-radius:50%;
  cursor:pointer;
  transition:background .25s;
}
.search-box button:hover{background:var(--accent-dark)}
.btn-cta-header{
  background:var(--accent);
  color:#fff;
  border:none;
  border-radius:48px;
  padding:.6rem 1.4rem;
  font-size:.9rem;
  font-weight:600;
  cursor:pointer;
  transition:var(--transition, all .25s ease);
  white-space:nowrap;
}
.btn-cta-header:hover{background:var(--accent-dark);transform:translateY(-1px)}
.nav-channel{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.4rem 0 .6rem;
}
.nav-links{
  display:flex;
  list-style:none;
  flex-wrap:nowrap;
  overflow-x:auto;
  gap:1.2rem;
  padding:0;
  margin:0;
}
.nav-links li{flex-shrink:0}
.nav-links a{
  display:block;
  padding:.5rem 0 .3rem;
  font-size:.95rem;
  font-weight:500;
  color:var(--text);
  border-bottom:2px solid transparent;
  transition:color .25s,border-color .25s;
}
.nav-links a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.nav-links a.active{color:var(--accent);border-bottom-color:var(--accent)}
.nav-hot{
  font-size:.82rem;
  color:var(--muted);
  white-space:nowrap;
}
.nav-hot a{color:var(--muted);margin:0 .2rem;transition:color .25s}
.nav-hot a:hover{color:var(--accent)}
.hamburger{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--border);
  background:var(--white);
  border-radius:8px;
  cursor:pointer;
  font-size:1.2rem;
  color:var(--primary);
  align-items:center;
  justify-content:center;
}
.mobile-nav{
  display:none;
  position:fixed;
  top:0;right:0;bottom:0;
  width:300px;
  background:var(--white);
  box-shadow:-8px 0 30px rgba(0,0,0,0.1);
  z-index:1100;
  padding:2rem 1.5rem;
  flex-direction:column;
  gap:1.2rem;
}
.mobile-nav.open{display:flex}
.mobile-nav-overlay{
  display:none;
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background:rgba(30,40,50,.5);
  z-index:1050;
}
.mobile-nav-overlay.open{display:block}
.mobile-nav .close-btn{
  align-self:flex-end;
  background:none;border:none;
  font-size:1.5rem;
  cursor:pointer;
  color:var(--text);
}
.mobile-nav a{
  font-size:1.05rem;
  font-weight:500;
  padding:.6rem 0;
  border-bottom:1px solid var(--border);
  color:var(--text);
}
.mobile-nav a.active{color:var(--accent)}

/* Hero */
.hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  min-height:72vh;
  display:flex;
  align-items:center;
  color:#fff;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to bottom, rgba(30,40,50,0.4), rgba(30,40,50,0.9));
}
.hero-content{
  position:relative;
  z-index:2;
  padding:4rem 0;
  max-width:720px;
}
.hero h1{
  font-size:clamp(2.2rem,4.5vw,3.4rem);
  font-weight:800;
  line-height:1.2;
  color:#fff;
  margin-bottom:1rem;
}
.hero-sub{
  font-size:clamp(1rem,2vw,1.25rem);
  color:rgba(255,255,255,0.9);
  margin-bottom:2rem;
}
.hero-btns{
  display:flex;
  gap:1rem;
  flex-wrap:wrap;
}
.btn-main{
  display:inline-block;
  background:var(--accent);
  color:#fff;
  border-radius:48px;
  padding:.9em 2em;
  font-size:1rem;
  font-weight:600;
  border:none;
  cursor:pointer;
  transition:all .25s ease;
}
.btn-main:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-outline-light{
  display:inline-block;
  background:transparent;
  color:#fff;
  border:2px solid #fff;
  border-radius:48px;
  padding:.85em 2em;
  font-size:1rem;
  font-weight:600;
  cursor:pointer;
  transition:all .25s ease;
}
.btn-outline-light:hover{background:#fff;color:var(--primary)}
.btn-outline{
  display:inline-block;
  background:transparent;
  color:var(--primary);
  border:2px solid var(--primary);
  border-radius:48px;
  padding:.85em 2em;
  font-size:1rem;
  font-weight:600;
  cursor:pointer;
  transition:all .25s ease;
}
.btn-outline:hover{background:var(--primary);color:#fff}
.hero-info-bar{
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  background:rgba(255,255,255,0.1);
  backdrop-filter:blur(8px);
  border-top:1px solid rgba(255,255,255,0.15);
  padding:.7rem 0;
  font-size:.85rem;
  z-index:3;
}
.hero-info-bar .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
}
.hero-info-bar span{display:inline-flex;align-items:center;gap:.5rem}

/* Slider Library */
.material-slider{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding-bottom:1rem;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.material-slider::-webkit-scrollbar{height:6px}
.material-slider::-webkit-scrollbar-track{background:var(--bg-alt);border-radius:3px}
.material-slider::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}
.slider-card{
  flex:0 0 280px;
  scroll-snap-align:start;
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;
}
.slider-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.slider-card .card-cover{
  height:170px;
  overflow:hidden;
}
.slider-card .card-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.slider-card:hover .card-cover img{transform:scale(1.04)}
.slider-card .badge-cat{
  display:inline-block;
  background:var(--primary);
  color:#fff;
  font-size:.72rem;
  border-radius:8px;
  padding:2px 10px;
  margin:.8rem 0 0 .8rem;
}
.slider-card .card-body{
  padding:.6rem .8rem 1rem;
}
.slider-card h3{font-size:1.05rem;margin-bottom:.3rem}
.slider-card p{font-size:.85rem;color:var(--muted);margin-bottom:.4rem}
.slider-card .detail-link{color:var(--accent);font-size:.85rem;font-weight:600}

/* Hot Recommendations */
.hot-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.card-hot{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  position:relative;
  transition:transform .3s,box-shadow .3s;
}
.card-hot:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.hot-flag{
  position:absolute;
  top:8px;left:8px;
  background:var(--accent);
  color:#fff;
  font-size:.72rem;
  font-weight:700;
  padding:3px 10px;
  border-radius:8px 0 8px 0;
  z-index:2;
}
.card-hot .card-cover{height:160px;overflow:hidden}
.card-hot .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card-hot:hover .card-cover img{transform:scale(1.04)}
.card-hot .card-body{padding:1rem}
.card-hot h3{font-size:1.1rem;margin-bottom:.3rem}
.card-hot .short-line{font-size:.85rem;color:var(--muted);margin-bottom:.5rem;}
.card-hot .spec{font-size:.8rem;color:var(--muted);margin-bottom:.7rem}
.inquiry-link{
  color:var(--accent);
  font-weight:600;
  font-size:.9rem;
  border-bottom:2px solid var(--accent);
  padding-bottom:2px;
  transition:color .25s,border-color .25s;
}
.inquiry-link:hover{color:var(--accent-dark);border-color:var(--accent-dark)}

/* Feature Zones (film-list style) */
.zone-wrap{
  display:flex;
  flex-direction:row;
  gap:24px;
  align-items:stretch;
}
.zone-nav-col{
  flex:0 0 260px;
  display:flex;
  flex-direction:column;
  gap:1rem;
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.5rem;
}
.zone-nav-col h3{
  font-size:1.2rem;
  margin-bottom:.8rem;
  border-left:4px solid var(--accent);
  padding-left:.7rem;
}
.zone-nav-col .cat-item{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:.8rem .6rem;
  border-radius:8px;
  background:var(--bg);
  transition:background .25s;
  font-size:.95rem;
}
.zone-nav-col .cat-item:hover{background:var(--bg-alt)}
.zone-nav-col .cat-item strong{font-weight:600}
.zone-nav-col .cat-item small{color:var(--muted)}
.zone-grid{
  flex:1;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.zone-tile{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;
}
.zone-tile:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.zone-tile .tile-cover{height:130px;overflow:hidden}
.zone-tile .tile-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.zone-tile:hover .tile-cover img{transform:scale(1.05)}
.zone-tile .tile-body{padding:.8rem 1rem 1rem;}
.zone-tile h4{font-size:1rem;margin-bottom:.2rem}
.zone-tile p{font-size:.83rem;color:var(--muted);margin-bottom:.3rem}

/* News / CMS */
.news-list{
  display:flex;
  flex-direction:column;
  gap:16px;
}
.news-item{
  display:flex;
  gap:16px;
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.2rem;
  transition:box-shadow .3s,transform .3s;
}
.news-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.news-left{
  flex:0 0 90px;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:.3rem;
}
.news-cat{
  background:var(--primary);
  color:#fff;
  font-size:.72rem;
  border-radius:8px;
  padding:2px 10px;
  display:inline-block;
}
.news-date{
  font-size:.78rem;
  color:var(--muted);
  line-height:1.4;
}
.news-right{
  flex:1;
  display:flex;
  flex-direction:column;
}
.news-right h3{font-size:1.1rem;margin-bottom:.4rem}
.news-right p{font-size:.85rem;color:var(--muted);margin-bottom:.6rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-top:auto;
}
.read-more{
  color:var(--accent);
  font-size:.85rem;
  font-weight:600;
}
.read-more:hover{text-decoration:underline}
.empty-state{
  text-align:center;
  padding:2rem;
  background:var(--bg-alt);
  border-radius:var(--radius);
  color:var(--muted);
  font-size:.95rem;
}

/* FAQ */
.faq-wrap{
  max-width:900px;
  margin:0 auto;
}
.faq-item{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:16px;
  overflow:hidden;
  transition:box-shadow .3s;
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-q{
  width:100%;
  background:var(--white);
  border:none;
  padding:1.1rem 1.3rem;
  text-align:left;
  font-size:1rem;
  font-weight:600;
  color:var(--title);
  display:flex;
  justify-content:space-between;
  align-items:center;
  cursor:pointer;
  transition:background .25s;
}
.faq-q:hover{background:var(--bg-alt)}
.faq-icon{
  display:block;
  width:28px;height:28px;
  border-radius:50%;
  background:var(--bg-alt);
  color:var(--primary);
  font-size:1.2rem;
  line-height:26px;
  text-align:center;
  transition:all .3s;
  flex-shrink:0;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  display:none;
  padding:0 1.3rem 1.2rem;
  color:var(--muted);
  border-left:4px solid var(--accent);
  background:var(--bg);
}
.faq-item.open .faq-a{display:block}
.faq-more{
  text-align:center;
  margin-top:1rem;
}
.faq-more a{color:var(--accent);font-weight:600;border-bottom:2px solid var(--accent)}

/* CTA */
.cta-section{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  min-height:200px;
  display:flex;
  align-items:center;
}
.cta-section::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(30,40,50,0.8);
}
.cta-content{
  position:relative;
  z-index:2;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:2rem;
  flex-wrap:wrap;
  padding:2.5rem 0;
  width:100%;
}
.cta-text h2{
  color:#fff;
  font-size:clamp(1.5rem,3vw,2.2rem);
  font-weight:700;
  margin-bottom:.4rem;
}
.cta-text p{color:rgba(255,255,255,0.8);font-size:.95rem}
.cta-actions{
  display:flex;
  align-items:center;
  gap:2rem;
  flex-wrap:wrap;
}
.cta-phone{
  color:#fff;
  font-size:1.8rem;
  font-weight:700;
  letter-spacing:1px;
}

/* Footer */
.site-footer{
  background:var(--primary-dark);
  color:#D5D8DC;
  padding:2.5rem 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr 1fr 1fr 1.2fr;
  gap:2rem;
  padding-bottom:2rem;
}
.footer-col h4{
  color:#fff;
  font-size:1rem;
  margin-bottom:1rem;
}
.footer-col p{font-size:.85rem;line-height:1.6;color:#B8C0C8}
.footer-logo{
  display:flex;
  align-items:center;
  gap:.7rem;
  margin-bottom:.8rem;
}
.footer-logo .logo-icon{
  background:var(--accent);
  color:#fff;
}
.footer-logo .logo-text{color:#fff;font-size:1.2rem}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col ul li{margin-bottom:.6rem}
.footer-col ul a{
  color:#D5D8DC;
  font-size:.88rem;
  transition:color .25s,padding-left .25s;
}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.footer-contact p{
  display:flex;
  align-items:center;
  gap:.5rem;
  margin-bottom:.5rem;
  font-size:.88rem;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.15);
  padding:1rem 0;
  font-size:.82rem;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
  color:#A0A8B0;
}
.footer-bottom a{color:#A0A8B0;transition:color .25s}
.footer-bottom a:hover{color:#fff}

/* Animations */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}
.anim{animation:fadeInUp .7s ease both}
.anim-delay-1{animation-delay:.2s}
.anim-delay-2{animation-delay:.4s}

/* Focus state */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline:3px solid var(--accent);
  outline-offset:2px;
}

/* Responsive */
@media(max-width:1024px){
  .hot-grid{grid-template-columns:repeat(3,1fr)}
  .zone-wrap{flex-direction:column}
  .zone-nav-col{flex:auto}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  :root{--space:2.5rem}
  .search-box{display:none}
  .btn-cta-header{display:none}
  .hamburger{display:flex}
  .nav-channel{display:none}
  .hot-grid{grid-template-columns:repeat(2,1fr)}
  .zone-grid{grid-template-columns:1fr}
  .hero{min-height:55vh}
  .hero h1{font-size:2rem}
  .hero-btns{flex-direction:column;align-items:stretch}
  .btn-main,.btn-outline-light{text-align:center}
  .news-item{flex-direction:column}
  .news-left{flex-direction:row;align-items:center;flex:auto}
  .footer-grid{grid-template-columns:1fr}
  .cta-content{flex-direction:column;align-items:flex-start}
  .cta-actions{gap:1rem}
  .header-top-bar .container{flex-direction:column;gap:.3rem}
}
@media(max-width:480px){
  .hot-grid{grid-template-columns:1fr}
  .slider-card{flex-basis:220px}
  .logo-text{font-size:1.1rem}
  .hero h1{font-size:1.8rem}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* roulang page: category1 */
:root {
  --primary: #34495E;
  --primary-dark: #2C3E50;
  --accent: #D97B29;
  --accent-dark: #C06A1D;
  --bg-warm: #F6F4F0;
  --bg-light: #EDEAE4;
  --bg-white: #FFFFFF;
  --text-head: #2B2B2B;
  --text-body: #3D3D3D;
  --text-muted: #6B6B6B;
  --border: #E3DED6;
  --success: #2E7D4F;
  --danger: #C0392B;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(40, 30, 20, 0.06);
  --shadow-md: 0 8px 24px rgba(40, 30, 20, 0.12);
  --container: 1200px;
  --gap: 20px;
  --transition: all 0.25s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-warm);
  color: var(--text-body);
  line-height: 1.7;
  font-size: 1rem;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 0.9em 2em;
  border-radius: 48px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-main {
  background: var(--accent);
  color: #fff !important;
}

.btn-main:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(217, 123, 41, 0.3);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary) !important;
}

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

.btn-white-outline {
  background: transparent;
  border: 2px solid #fff;
  color: #fff !important;
}

.btn-white-outline:hover {
  background: #fff;
  color: #34495E !important;
}

.btn-large {
  padding: 1em 2.4em;
  font-size: 1.05rem;
}

.btn-small {
  padding: 0.5em 1.2em;
  font-size: 0.85rem;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.header-top-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 64px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-icon {
  background: var(--primary);
  color: #fff;
  padding: 6px 10px;
  border-radius: 8px;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 1px;
  line-height: 1;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-head);
  letter-spacing: 0.5px;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.header-meta a {
  color: var(--primary);
  font-weight: 600;
}

.header-search {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 320px;
  margin-left: auto;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.25s ease;
}

.header-search:focus-within {
  border-bottom-color: var(--accent);
}

.header-search input {
  flex: 1;
  border: none;
  outline: none;
  padding: 8px 0;
  font-size: 0.85rem;
  background: transparent;
  min-width: 0;
}

.header-search button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.header-search button:hover {
  background: var(--accent-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text-head);
  display: block;
  border-radius: 2px;
}

/* ===== 分类频道导航 ===== */
.nav-channel {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-channel .container {
  position: relative;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links li a {
  display: block;
  padding: 13px 2px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-body);
  border-bottom: 3px solid transparent;
  transition: var(--transition);
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-hot {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.nav-hot i {
  margin-right: 2px;
}

.nav-hot a {
  color: var(--text-body);
  font-weight: 600;
  transition: var(--transition);
}

.nav-hot a:hover {
  color: var(--accent);
}

/* ===== Hero ===== */
.cat-hero {
  min-height: 360px;
  display: flex;
  align-items: center;
  position: relative;
  background-size: cover;
  background-position: center;
}

.cat-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(30, 40, 50, 0.5), rgba(30, 40, 50, 0.88));
}

.cat-hero-content {
  position: relative;
  z-index: 1;
  padding: 64px 0;
  color: #fff;
}

.cat-eyebrow {
  display: inline-block;
  background: var(--accent);
  border-radius: 8px;
  padding: 4px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.cat-hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 14px;
  color: #fff;
}

.cat-hero p {
  max-width: 560px;
  font-size: 1.02rem;
  line-height: 1.7;
  opacity: 0.94;
  margin-bottom: 26px;
}

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

/* ===== 筛选条 ===== */
.filter-bar {
  padding: 22px 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.filter-label {
  font-weight: 600;
  color: var(--text-head);
  font-size: 0.9rem;
  margin-right: 6px;
}

.filter-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 48px;
  padding: 8px 18px;
  font-size: 0.84rem;
  color: var(--text-body);
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  border-color: var(--accent);
  background: rgba(217, 123, 41, 0.08);
  color: var(--accent);
  font-weight: 600;
}

/* ===== 通用板块 ===== */
.section-block {
  padding: 56px 0;
}

.section-block.alt-bg {
  background: var(--bg-light);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  color: var(--text-head);
  line-height: 1.3;
}

.section-head .section-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 4px 0 0;
}

.section-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.section-link:hover {
  color: var(--accent-dark);
}

/* ===== 材料卡片网格 ===== */
.material-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.material-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

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

.material-card-thumb {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-light);
  position: relative;
}

.material-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.material-card-tag {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  border-radius: 8px;
  padding: 2px 10px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.material-card-body {
  padding: 16px 18px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.material-card-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-head);
  margin: 0 0 6px;
}

.material-card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.material-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border);
  padding-top: 10px;
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.material-card-meta a {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.82rem;
}

.material-card-meta a:hover {
  color: var(--accent-dark);
}

/* ===== 适用场景 ===== */
.scene-section {
  background: var(--bg-light);
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.scene-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 26px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

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

.scene-num {
  position: absolute;
  top: 12px;
  right: 18px;
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--bg-light);
  line-height: 1;
  z-index: 0;
}

.scene-card h3 {
  position: relative;
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-head);
}

.scene-card p {
  position: relative;
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.scene-icon {
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 16px;
}

/* ===== 流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-item {
  text-align: center;
  padding: 24px 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

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

.step-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin: 0 auto 14px;
  position: relative;
}

.step-icon::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px dashed var(--primary);
  opacity: 0.35;
}

.step-item h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-head);
  margin: 0 0 6px;
}

.step-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-light);
}

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

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  background: transparent;
  border: none;
  color: var(--text-head);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-style: normal;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  transition: transform 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: var(--accent);
  color: var(--accent);
}

.faq-answer {
  display: none;
  padding: 0 22px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-more {
  text-align: center;
  margin-top: 22px;
  font-size: 0.9rem;
}

.faq-more a {
  color: var(--accent);
  font-weight: 600;
  transition: var(--transition);
}

.faq-more a:hover {
  color: var(--accent-dark);
}

/* ===== CTA ===== */
.cta-section {
  min-height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(30, 40, 50, 0.82);
}

.cta-content {
  position: relative;
  z-index: 1;
  padding: 60px 0;
  color: #fff;
  text-align: center;
  width: 100%;
}

.cta-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin: 0 0 10px;
  color: #fff;
}

.cta-content p {
  font-size: 0.95rem;
  opacity: 0.92;
  margin: 0 0 22px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.cta-phone {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
}

/* ===== Footer ===== */
.site-footer {
  background: #2C3E50;
  color: #D5D8DC;
  padding: 50px 0 0;
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr 1.1fr;
  gap: 36px;
  padding-bottom: 34px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.footer-logo .logo-icon {
  background: #fff;
  color: #2C3E50;
}

.footer-logo .logo-text {
  color: #fff;
  font-size: 1.15rem;
}

.footer-col p {
  line-height: 1.7;
  margin-bottom: 10px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin: 0 0 14px;
  font-weight: 700;
}

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

.footer-col ul li a,
.footer-contact a {
  color: #D5D8DC;
  transition: var(--transition);
}

.footer-col ul li a:hover,
.footer-contact a:hover {
  color: #fff;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.footer-contact i {
  color: var(--accent);
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(213, 216, 220, 0.8);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

@media (max-width: 768px) {
  .header-top-inner {
    height: auto;
    padding: 12px 0;
    flex-wrap: wrap;
    gap: 10px;
  }

  .header-meta {
    display: none;
  }

  .header-search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    margin-left: 0;
    padding: 0 4px;
  }

  .hamburger {
    display: flex;
    margin-left: auto;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px 14px;
    gap: 0;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid var(--border);
  }

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

  .nav-links li a {
    padding: 12px 0;
    border-bottom: 1px solid var(--bg-light);
    border-left: 3px solid transparent;
    padding-left: 8px;
  }

  .nav-links li a.active {
    border-left-color: var(--accent);
    border-bottom-color: transparent;
  }

  .nav-hot {
    display: none;
  }

  .cat-hero {
    min-height: 300px;
  }

  .cat-hero-content {
    padding: 48px 0;
  }

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

@media (max-width: 520px) {
  body {
    font-size: 0.92rem;
  }

  .section-block {
    padding: 38px 0;
  }

  .material-grid,
  .scene-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

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

  .cat-hero-actions {
    flex-direction: column;
  }

  .cta-actions {
    flex-direction: column;
    gap: 14px;
  }

  .cta-phone {
    font-size: 1.2rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
  --primary: #34495E;
  --accent: #D97B29;
  --bg: #F6F4F0;
  --surface: #FFFFFF;
  --muted-bg: #EDEAE4;
  --title: #2B2B2B;
  --body: #3D3D3D;
  --muted: #6B6B6B;
  --line: #E3DED6;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(40,30,20,.06);
  --shadow-lift: 0 8px 24px rgba(40,30,20,.12);
  --transition: all .25s ease;
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*,
*::before,
*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--body); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul, ol { padding-left: 1.2rem; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-top { display: flex; align-items: center; gap: 1.4rem; padding: .8rem 0; }
.site-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: .8rem;
}
.logo-text { font-size: 1.32rem; font-weight: 800; color: var(--title); letter-spacing: .01em; }
.header-slogan { color: var(--muted); font-size: .84rem; display: flex; align-items: center; gap: 6px; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: .75rem; }
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 48px;
  padding: 4px 6px 4px 16px;
  transition: border-color .25s;
}
.header-search:focus-within { border-color: var(--accent); }
.header-search input { border: none; background: transparent; outline: none; font-size: .88rem; width: 170px; color: var(--title); }
.header-search button { width: 36px; height: 36px; border-radius: 50%; background: var(--accent); border: none; color: #fff; cursor: pointer; transition: background .25s; }
.header-search button:hover { background: #C06A1D; }
.btn-quote {
  background: var(--accent);
  color: #fff;
  border-radius: 48px;
  padding: 10px 22px;
  font-size: .88rem;
  font-weight: 700;
  white-space: nowrap;
  display: inline-block;
  transition: var(--transition);
}
.btn-quote:hover { background: #C06A1D; transform: translateY(-1px); box-shadow: 0 6px 18px rgba(217,123,41,.35); }
.nav-toggle { display: none; background: var(--primary); border: none; color: #fff; width: 42px; height: 42px; border-radius: 50%; font-size: 1rem; cursor: pointer; align-items: center; justify-content: center; }

.nav-channel { background: rgba(255,255,255,.92); border-top: 1px solid #F0ECE6; }
.nav-channel .container { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.nav-links { list-style: none; margin: 0; padding: 0; display: flex; gap: 2rem; }
.nav-links a {
  display: inline-block;
  position: relative;
  font-size: .93rem;
  font-weight: 600;
  color: var(--title);
  padding: .8rem 0 .7rem;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 0;
  background: var(--accent);
  border-radius: 3px;
  transition: width .25s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--accent); }
.nav-hot { color: var(--muted); font-size: .82rem; white-space: nowrap; }
.nav-hot a { color: var(--primary); font-weight: 600; margin-left: 4px; }
.nav-hot a:hover { color: var(--accent); }

/* ===== 页面头部横幅 ===== */
.page-lead {
  min-height: 170px;
  background: linear-gradient(90deg, rgba(30,40,50,.88), rgba(30,40,50,.38)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  display: flex;
  align-items: center;
  color: #fff;
}
.page-lead .lead-title { font-size: 1.5rem; font-weight: 800; margin: 0 0 .2rem; }
.page-lead .lead-crumb { font-size: .85rem; color: rgba(255,255,255,.85); }
.page-lead .lead-crumb a { color: #fff; text-decoration: underline; }
.page-lead .lead-crumb a:hover { text-decoration: none; }
.page-lead .lead-crumb span { margin: 0 6px; opacity: .65; }

/* ===== 文章两栏 ===== */
.article-section { padding: 3.5rem 0 1.5rem; }
.article-main-row { display: flex; margin-left: -15px; margin-right: -15px; }
.article-main-row > .cell { padding-left: 15px; padding-right: 15px; }
.article-card {
  background: var(--surface);
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 2.2rem;
}
.article-head { margin-bottom: 1.6rem; }
.article-head h1 {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  line-height: 1.35;
  margin: 0 0 1rem;
  color: var(--title);
  font-weight: 700;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  color: var(--muted);
  font-size: .88rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: .9rem 0;
  margin-bottom: 1.6rem;
}
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--accent); }
.article-body { font-size: 1rem; line-height: 1.8; color: var(--body); }
.article-body p { margin: 0 0 1em; }
.article-body h2 { font-size: 1.35rem; margin: 1.6em 0 .6em; color: var(--title); }
.article-body h3 { font-size: 1.15rem; margin: 1.4em 0 .5em; color: var(--title); }
.article-body h4 { font-size: 1rem; margin: 1.2em 0 .4em; color: var(--title); }
.article-body ul,
.article-body ol { margin: 0 0 1.2em 1.2rem; }
.article-body blockquote {
  margin: 1.4em 0;
  padding: .8rem 1.2rem;
  background: var(--bg);
  border-left: 4px solid var(--accent);
  border-radius: 0 8px 8px 0;
  color: var(--muted);
  font-style: normal;
}
.article-body img { border-radius: 10px; border: 1px solid var(--line); margin: 1.2rem 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; }
.article-body th,
.article-body td { border: 1px solid var(--line); padding: .6rem .8rem; font-size: .9rem; }
.article-body th { background: var(--bg); color: var(--primary); font-weight: 700; }
.article-body a { color: var(--accent); font-weight: 600; }
.article-body a:hover { text-decoration: underline; }

.not-found {
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: 12px;
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--muted);
}
.not-found a { color: var(--accent); font-weight: 700; }

.article-tags { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2rem; }
.tag {
  background: #F0ECE6;
  color: var(--primary);
  border-radius: 8px;
  padding: 4px 12px;
  font-size: .8rem;
  font-weight: 600;
}
.pager-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.8rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}
.pager-nav a { color: var(--primary); font-size: .9rem; font-weight: 600; transition: var(--transition); }
.pager-nav a:hover { color: var(--accent); }
.back-bar { margin-top: 1rem; text-align: right; }
.back-bar a { color: var(--muted); font-size: .88rem; font-weight: 600; }
.back-bar a:hover { color: var(--accent); }

/* ===== 侧边栏 ===== */
.aside-card {
  background: var(--surface);
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.6rem;
  margin-bottom: 1.6rem;
}
.aside-card h3 {
  font-size: 1.05rem;
  margin: 0 0 1rem;
  padding-left: .65rem;
  border-left: 4px solid var(--accent);
  color: var(--title);
}
.hot-list { list-style: none; margin: 0; padding: 0; }
.hot-list li {
  display: flex;
  gap: 12px;
  padding: .7rem 0;
  border-bottom: 1px dashed var(--line);
  align-items: flex-start;
}
.hot-list li:last-child { border-bottom: none; }
.hot-list img { width: 76px; height: 56px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.hot-list a { font-size: .86rem; font-weight: 600; line-height: 1.45; color: var(--title); }
.hot-list a:hover { color: var(--accent); }
.hot-list time { display: block; font-size: .75rem; color: #9A9A9A; margin-top: 4px; font-weight: 400; }

.contact-aside { background: var(--primary); border-color: var(--primary); color: #fff; }
.contact-aside h3 { border-left-color: #fff; color: #fff; }
.contact-aside p { font-size: .86rem; color: rgba(255,255,255,.86); margin-bottom: .4rem; }
.contact-phone { font-size: 1.65rem; font-weight: 800; color: #fff; margin: .6rem 0 .9rem; }
.btn-white {
  background: #fff;
  color: var(--primary);
  border-radius: 48px;
  padding: .65rem 1.6rem;
  display: inline-block;
  font-weight: 700;
  transition: var(--transition);
}
.btn-white:hover { background: var(--accent); color: #fff; }

.cat-nav ul { list-style: none; margin: 0; padding: 0; }
.cat-nav li a { display: block; padding: .55rem .8rem; border-radius: 8px; font-size: .9rem; color: var(--body); transition: var(--transition); }
.cat-nav li a:hover { background: var(--bg); color: var(--accent); padding-left: 1rem; }

/* ===== 相关阅读 ===== */
.related-section { padding: 1.5rem 0 2.5rem; }
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--title);
  margin: 0 0 1.6rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::before {
  content: "";
  width: 6px;
  height: 24px;
  background: var(--accent);
  border-radius: 4px;
}
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.related-card {
  background: var(--surface);
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.related-card img { width: 100%; height: 155px; object-fit: cover; transition: transform .4s ease; }
.related-card:hover img { transform: scale(1.04); }
.rc-body { padding: 1rem 1.1rem 1.1rem; }
.rc-body h3 { font-size: .98rem; margin: 0 0 .35rem; color: var(--title); line-height: 1.45; }
.rc-body time { color: #9A9A9A; font-size: .78rem; }

/* ===== CTA ===== */
.article-cta {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  min-height: 220px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2.5rem 3rem;
  color: #fff;
  overflow: hidden;
  margin: 2rem 0 3rem;
}
.article-cta::before { content: ""; position: absolute; inset: 0; background: rgba(44,62,80,.85); }
.article-cta > * { position: relative; z-index: 1; }
.cta-text h2 { font-size: 1.55rem; margin: 0 0 .35rem; }
.cta-text p { margin: 0; opacity: .85; font-size: .92rem; }
.cta-actions { display: flex; align-items: center; gap: 1.6rem; }
.btn-cta-white {
  background: var(--accent);
  color: #fff;
  border-radius: 48px;
  padding: 14px 34px;
  font-size: .95rem;
  font-weight: 700;
  white-space: nowrap;
  transition: var(--transition);
}
.btn-cta-white:hover { background: #C06A1D; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(217,123,41,.4); }
.cta-phone { font-size: 1.75rem; font-weight: 800; white-space: nowrap; }

/* ===== 页脚 ===== */
.site-footer { background: #2C3E50; color: #D5D8DC; padding: 3rem 0 0; margin-top: 2.5rem; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2.2rem; padding-bottom: 2rem; }
.footer-logo { display: flex; align-items: center; gap: 8px; }
.footer-logo .logo-icon { background: var(--accent); }
.footer-logo .logo-text { color: #fff; }
.footer-col p { font-size: .88rem; line-height: 1.6; color: rgba(213,216,220,.7); margin-top: .8rem; }
.footer-col h4 { color: #fff; font-size: 1rem; margin: 0 0 1rem; font-weight: 600; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: .55rem; }
.footer-col a { color: #D5D8DC; font-size: .9rem; transition: var(--transition); }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-contact p { margin: 0 0 .4rem; font-size: .88rem; color: rgba(213,216,220,.85); }
.footer-contact i { margin-right: 6px; color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 1.2rem 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: .84rem;
  color: #AAB4BE;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .header-top { gap: .6rem; }
  .header-slogan { display: none; }
  .header-search { background: transparent; border: none; padding: 0; }
  .header-search input { display: none; }
  .header-search button { width: 42px; height: 42px; }
  .btn-quote { padding: 8px 16px; font-size: .82rem; }
  .nav-toggle { display: inline-flex; }
  .nav-channel .container { flex-wrap: wrap; }
  .nav-hot { display: none; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--line);
    padding: .4rem 0;
    margin-top: .4rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: .7rem 0; border-bottom: 1px dashed var(--line); }
  .nav-links a::after { display: none; }
  .article-section { padding: 2.5rem 0 1rem; }
  .article-main-row { margin-left: 0; margin-right: 0; flex-wrap: wrap; }
  .article-main-row > .cell { padding-left: 0; padding-right: 0; margin-bottom: 1.6rem; }
  .article-card { padding: 1.4rem; }
  .pager-nav { flex-direction: column; }
  .article-cta { flex-direction: column; text-align: center; gap: 1.2rem; padding: 2rem 1.4rem; }
  .cta-actions { flex-direction: column; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .logo-text { font-size: 1.08rem; }
  .logo-icon { width: 38px; height: 38px; font-size: .7rem; }
  .btn-quote { padding: 8px 12px; font-size: .78rem; }
  .article-head h1 { font-size: 1.35rem; }
  .article-body { font-size: .95rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .page-lead .lead-title { font-size: 1.2rem; }
  .cta-phone { font-size: 1.3rem; }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #34495E;
            --primary-dark: #2C3E50;
            --accent: #D97B29;
            --accent-dark: #C06A1D;
            --bg-main: #F6F4F0;
            --bg-secondary: #EDEAE4;
            --bg-card: #FFFFFF;
            --text-heading: #2B2B2B;
            --text-body: #3D3D3D;
            --text-muted: #6B6B6B;
            --border: #E3DED6;
            --radius: 12px;
            --shadow-sm: 0 2px 8px rgba(40, 30, 20, 0.06);
            --shadow-lg: 0 8px 24px rgba(40, 30, 20, 0.12);
            --transition: all .25s ease;
            --container-max: 1200px;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-main);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4 {
            color: var(--text-heading);
            line-height: 1.3;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 0.9em 2em;
            border-radius: 48px;
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1;
            cursor: pointer;
            border: 2px solid transparent;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        .btn-main {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-main:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.85);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: #fff;
        }
        .btn-lg {
            padding: 1em 2.6em;
            font-size: 1.05rem;
        }
        .btn:focus-visible,
        .filter-tab:focus-visible,
        .faq-question:focus-visible,
        .search-box input:focus-visible {
            outline: 3px solid rgba(217, 123, 41, 0.45);
            outline-offset: 2px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(40, 30, 20, 0.04);
        }
        .nav-top {
            border-bottom: 1px solid rgba(227, 222, 214, 0.6);
            padding: 12px 0;
        }
        .nav-top-inner {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }
        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: 0.5px;
        }
        .brand-slogan {
            font-size: 0.82rem;
            color: var(--text-muted);
            border-left: 1px solid var(--border);
            padding-left: 16px;
            white-space: nowrap;
        }
        .nav-actions {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-box {
            position: relative;
            display: flex;
            align-items: center;
            border-bottom: 2px solid var(--border);
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-bottom-color: var(--accent);
        }
        .search-box input {
            width: 180px;
            padding: 6px 4px;
            font-size: 0.88rem;
            color: var(--text-body);
            transition: var(--transition);
        }
        .search-box input::placeholder {
            color: #9B9B9B;
        }
        .search-box button {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 0.82rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent-dark);
        }
        .nav-actions .btn {
            padding: 0.65em 1.5em;
            font-size: 0.88rem;
        }

        .nav-channel {
            background: transparent;
        }
        .nav-channel-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            min-height: 50px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-links>li {
            position: relative;
        }
        .nav-links a {
            display: block;
            padding: 10px 16px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-body);
            border-bottom: 3px solid transparent;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--accent);
        }
        .nav-links a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
            font-weight: 700;
        }
        .nav-hot {
            font-size: 0.84rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-hot a {
            color: var(--primary);
            font-weight: 600;
            padding: 4px 8px;
            border-radius: 6px;
            background: var(--bg-secondary);
            transition: var(--transition);
        }
        .nav-hot a:hover {
            background: var(--accent);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-secondary);
            color: var(--primary);
            font-size: 1rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        @media (max-width: 768px) {
            .brand-slogan {
                display: none;
            }
            .search-box {
                display: none;
            }
            .nav-actions .btn {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }
            .nav-channel-inner {
                flex-wrap: wrap;
                padding: 8px 0;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                border-radius: var(--radius);
                padding: 8px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-hot {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .brand-icon {
                width: 38px;
                height: 38px;
                font-size: 0.75rem;
            }
            .brand-name {
                font-size: 1.05rem;
            }
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            min-height: 360px;
            display: flex;
            align-items: center;
            color: #fff;
            isolation: isolate;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(30, 40, 50, 0.88) 0%, rgba(30, 40, 50, 0.62) 45%, rgba(30, 40, 50, 0.35) 100%);
            z-index: -1;
        }
        .category-hero .container {
            padding-top: 60px;
            padding-bottom: 60px;
            width: 100%;
        }
        .breadcrumb {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .category-hero h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.25;
            max-width: 640px;
        }
        .category-hero .category-desc {
            font-size: 1rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
            margin-bottom: 28px;
            font-weight: 400;
        }
        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .category-hero .stats-row {
            display: flex;
            gap: 30px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .category-hero .stat-item {
            border-left: 3px solid var(--accent);
            padding-left: 14px;
        }
        .category-hero .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .category-hero .stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 300px;
            }
            .category-hero .container {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .category-desc {
                font-size: 0.92rem;
            }
            .hero-ctas .btn {
                width: 100%;
            }
        }

        /* ========== 筛选条 ========== */
        .filter-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .filter-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .filter-tabs {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tab {
            padding: 8px 18px;
            border-radius: 48px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--bg-secondary);
            color: var(--text-body);
            cursor: pointer;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .filter-tab:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .filter-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .filter-result {
            font-size: 0.84rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .filter-bar-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ========== 核心材料卡片 ========== */
        .section-block {
            padding: 72px 0;
        }
        .section-block--tint {
            background: var(--bg-secondary);
        }
        .section-head {
            margin-bottom: 32px;
            max-width: 720px;
        }
        .section-head h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .material-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .material-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .material-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .material-card .card-media {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--bg-secondary);
        }
        .material-card .card-media img {
            width: 100%;
            height: 100%;
            transition: transform 0.4s ease;
        }
        .material-card:hover .card-media img {
            transform: scale(1.04);
        }
        .material-card .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.72rem;
            padding: 4px 12px;
            border-radius: 8px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .material-card .badge--hot {
            background: var(--accent);
        }
        .material-card .card-body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .material-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .material-card .card-body .spec {
            font-size: 0.84rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .material-card .card-body .desc {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-bottom: 14px;
            flex: 1;
        }
        .material-card .card-body .card-links {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .card-links .link-primary {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.88rem;
        }
        .card-links .link-primary:hover {
            color: var(--accent-dark);
        }
        .card-links .link-muted {
            color: var(--text-muted);
            font-size: 0.84rem;
        }
        @media (max-width: 900px) {
            .material-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .material-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 应用场景 ========== */
        .scenario-section {
            background: var(--bg-secondary);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .scenario-card .media {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--bg-secondary);
        }
        .scenario-card .media img {
            width: 100%;
            height: 100%;
            transition: transform 0.4s ease;
        }
        .scenario-card:hover .media img {
            transform: scale(1.04);
        }
        .scenario-card .info {
            padding: 16px;
        }
        .scenario-card .info h3 {
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .scenario-card .info p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 施工流程 ========== */
        .process-section {
            background: var(--primary-dark);
            color: #fff;
        }
        .process-section .section-head h2,
        .process-section .section-head p {
            color: #fff;
        }
        .process-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 12px;
        }
        .process-step {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            padding: 26px 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.9;
            margin-bottom: 10px;
            line-height: 1;
        }
        .process-step h3 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.84rem;
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 对比表 ========== */
        .compare-wrapper {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .compare-table th {
            background: var(--primary);
            color: #fff;
            text-align: left;
            padding: 14px 16px;
            font-weight: 600;
            white-space: nowrap;
        }
        .compare-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text-body);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tr:hover td {
            background: var(--bg-main);
        }
        .compare-table .highlight-col {
            background: rgba(217, 123, 41, 0.06);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .compare-table {
                font-size: 0.8rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px 8px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-main);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.open {
            border-left: 4px solid var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: transparent;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 2px solid var(--border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item.open .faq-icon {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .faq-more {
            text-align: center;
            margin-top: 20px;
        }
        .faq-more a {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .faq-more a:hover {
            color: var(--accent-dark);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            min-height: 220px;
            display: flex;
            align-items: center;
            isolation: isolate;
            margin-bottom: 1rem;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(30, 40, 50, 0.82);
            z-index: -1;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            padding: 50px 0;
        }
        .cta-text h2 {
            color: #fff;
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 800;
            margin-bottom: 6px;
        }
        .cta-text p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
        }
        .cta-actions {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-phone {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .cta-phone i {
            color: var(--accent);
            margin-right: 8px;
        }
        @media (max-width: 768px) {
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .cta-phone {
                font-size: 1.2rem;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-dark);
            color: #D5D8DC;
            padding: 56px 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-logo .logo-icon {
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            padding: 8px 10px;
            border-radius: 10px;
            font-size: 0.8rem;
        }
        .footer-logo .logo-text {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .footer-col p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            line-height: 1.7;
            margin: 8px 0 0;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 6px 0;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-contact i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.82rem;
        }
        .footer-bottom span:last-child {
            letter-spacing: 0.5px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 通用 ========== */
        .section-block--flat {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root {
  --primary: #34495E;
  --primary-dark: #2C3E50;
  --accent: #D97B29;
  --accent-dark: #C06A1D;
  --bg: #F6F4F0;
  --bg-light: #EDEAE4;
  --card: #FFFFFF;
  --text-title: #2B2B2B;
  --text-body: #3D3D3D;
  --text-muted: #6B6B6B;
  --border: #E3DED6;
  --success: #2E7D4F;
  --danger: #C0392B;
  --radius: 12px;
  --radius-btn: 48px;
  --shadow: 0 2px 8px rgba(40,30,20,0.06);
  --shadow-hover: 0 8px 24px rgba(40,30,20,0.12);
  --transition: all 0.25s ease;
  --container-max: 1200px;
  --space-section: 4.5rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; object-fit: cover; }

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

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

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

h1, h2, h3, h4, h5, h6 {
  color: var(--text-title);
  line-height: 1.3;
  margin: 0 0 0.5em;
  font-weight: 700;
}

p { margin: 0 0 1em; }

/* ===== 容器 ===== */
.container, .row.container-row {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 0.9em 2em;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}
.btn-main {
  background: var(--accent);
  color: #fff !important;
  border-color: var(--accent);
}
.btn-main:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(217,123,41,0.32);
}
.btn-outline {
  background: transparent;
  color: var(--primary) !important;
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff !important;
}
.btn-outline-white {
  background: transparent;
  color: #fff !important;
  border-color: rgba(255,255,255,0.85);
}
.btn-outline-white:hover {
  background: #fff;
  color: var(--primary) !important;
}
.btn-lg { padding: 1em 2.6em; font-size: 1.05rem; }
.btn-sm { padding: 0.55em 1.3em; font-size: 0.85rem; }

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 0.72rem;
  border-radius: 8px;
  padding: 2px 10px;
  line-height: 1.6;
  white-space: nowrap;
}
.badge-hot {
  background: var(--accent);
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 3;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(40,30,20,0.05);
}
.header-top {
  background: #fff;
  border-bottom: 1px solid rgba(227,222,214,0.6);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 68px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}
.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 1px;
  box-shadow: 0 4px 10px rgba(52,73,94,0.25);
}
.logo-text {
  color: var(--text-title);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.brand-tagline {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-left: 0.4rem;
  border-left: 1px solid var(--border);
  padding-left: 0.8rem;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg);
  border-radius: 24px;
  padding: 0 0.4rem 0 1rem;
  height: 40px;
  border: 1px solid transparent;
}
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.85rem;
  color: var(--text-body);
  width: 160px;
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search:focus-within {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(217,123,41,0.15);
}
.header-search button {
  background: var(--accent);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.header-search button:hover { background: var(--accent-dark); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  font-size: 1.1rem;
  color: var(--primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* 频道导航 */
.nav-channel {
  background: #fff;
  padding: 0;
}
.nav-channel .container {
  min-height: 54px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.nav-links a {
  display: inline-block;
  padding: 0.6rem 0.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-body);
  border-bottom: 3px solid transparent;
  line-height: 1.4;
}
.nav-links a:hover {
  color: var(--accent);
  border-bottom-color: rgba(217,123,41,0.4);
}
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav-hot {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.nav-hot a {
  color: var(--text-muted);
  padding: 0 2px;
  font-weight: 500;
}
.nav-hot a:hover { color: var(--accent); }

/* ===== 页面 Hero ===== */
.page-hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 6rem 0 4.5rem;
  color: #fff;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(30,40,50,0.88) 0%, rgba(52,73,94,0.62) 55%, rgba(30,40,50,0.35) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 1.2rem;
}
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { margin: 0 0.3rem; font-size: 0.7rem; }
.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  color: #fff;
  font-weight: 800;
  margin-bottom: 0.45em;
  letter-spacing: 2px;
}
.page-hero .hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.92);
  max-width: 560px;
  margin-bottom: 1.8rem;
  line-height: 1.75;
}
.page-hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
}
.hero-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255,255,255,0.22);
}
.hero-meta span {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
}
.hero-meta i { color: var(--accent); margin-right: 0.3rem; }

/* ===== 筛选条 ===== */
.filter-bar-wrap {
  padding: 1.6rem 0;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}
.filter-bar {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.filter-label {
  font-weight: 700;
  color: var(--text-title);
  font-size: 0.9rem;
}
.filter-label i { color: var(--accent); margin-right: 0.2rem; }
.filter-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.filter-tab {
  padding: 0.5em 1.3em;
  border-radius: 30px;
  border: 2px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg);
}
.filter-tab:hover,
.filter-tab.active {
  border-color: var(--accent);
  color: var(--accent);
  background: #fff;
  box-shadow: 0 2px 8px rgba(217,123,41,0.14);
}

/* ===== Section ===== */
.section { padding: var(--space-section) 0; }
.section-head {
  margin-bottom: 2.2rem;
  text-align: center;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  color: var(--text-title);
  position: relative;
  padding-bottom: 0.5em;
  margin-bottom: 0.4em;
}
.section-head h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 4px;
  border-radius: 4px;
  background: var(--accent);
}
.section-head p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 560px;
  margin: 0 auto;
}
.section-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: -0.5rem;
}

/* ===== 产品卡片 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.product-card .card-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-light);
  position: relative;
}
.product-card .card-media img {
  width: 100%;
  height: 100%;
  transition: transform 0.4s ease;
}
.product-card:hover .card-media img { transform: scale(1.04); }
.card-media-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-weight: 700;
  background: var(--bg-light);
}
.product-card .card-body {
  padding: 1.1rem 1.2rem 1.2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card .card-body h3 {
  font-size: 1.1rem;
  margin: 0.45rem 0 0.3rem;
}
.product-card .card-body p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 0.85rem;
  flex: 1;
}
.card-link {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--accent);
}
.card-link i { font-size: 0.75rem; margin-left: 2px; }
.card-link:hover { color: var(--accent-dark); }
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.card-spec {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== 优势 ===== */
.strength-section { background: var(--bg-light); }
.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.strength-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.4rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.strength-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.strength-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 1rem;
  border-radius: 16px;
  background: rgba(52,73,94,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.strength-card h3 { font-size: 1.05rem; margin-bottom: 0.3rem; }
.strength-card p { font-size: 0.86rem; color: var(--text-muted); margin-bottom: 0; }

/* ===== 场景 ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.scenario-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.scenario-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.scenario-card .scenario-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-light);
  position: relative;
}
.scenario-card .scenario-media img {
  width: 100%;
  height: 100%;
  transition: transform 0.4s ease;
}
.scenario-card:hover .scenario-media img { transform: scale(1.05); }
.scenario-body { padding: 1.3rem 1.4rem 1.5rem; }
.scenario-body h3 { font-size: 1.1rem; margin-bottom: 0.35rem; }
.scenario-body p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 0.6rem; }
.scenario-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.6rem; }
.scenario-tags span {
  background: var(--bg-light);
  color: var(--text-body);
  border-radius: 8px;
  padding: 2px 10px;
  font-size: 0.78rem;
  border: 1px solid var(--border);
}

/* ===== 流程 ===== */
.process-section { background: var(--primary-dark); }
.process-section .section-head h2 { color: #fff; }
.process-section .section-head h2::after { background: var(--accent); }
.process-section .section-head p { color: rgba(255,255,255,0.7); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  counter-reset: step;
}
.process-step {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  padding: 1.8rem 1.3rem;
  position: relative;
  color: #fff;
  transition: var(--transition);
}
.process-step:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}
.process-step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.9;
  line-height: 1;
  margin-bottom: 0.8rem;
}
.process-step h3 { color: #fff; font-size: 1.02rem; margin-bottom: 0.35rem; }
.process-step p { color: rgba(255,255,255,0.7); font-size: 0.85rem; margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-light); }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 0.8rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.3rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-title);
  font-size: 0.98rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
  line-height: 1;
  transition: var(--transition);
}
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.faq-item[open] summary {
  border-left: 4px solid var(--accent);
}
.faq-answer {
  padding: 0 1.3rem 1.2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  border-top: 1px solid var(--bg-light);
  background: var(--bg);
}
.faq-more {
  text-align: center;
  margin-top: 1.8rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.faq-more a { color: var(--accent); font-weight: 600; }

/* ===== CTA ===== */
.cta-section {
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  position: relative;
  padding: 4.5rem 0;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(30,40,50,0.82);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 0.5rem;
}
.cta-section .cta-desc {
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  margin-bottom: 1.8rem;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.cta-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 1px;
}
.cta-phone i { color: var(--accent); font-size: 1.3rem; }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: #D5D8DC;
  padding: 3.5rem 0 0;
  margin-top: 1rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}
.footer-logo .logo-icon {
  background: var(--accent);
}
.footer-logo .logo-text {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 800;
}
.footer-col p {
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  line-height: 1.7;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  position: relative;
  padding-bottom: 0.45rem;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}
.footer-col ul li { margin-bottom: 0.4rem; }
.footer-col ul a {
  color: rgba(255,255,255,0.7);
  font-size: 0.88rem;
}
.footer-col ul a:hover { color: var(--accent); }
.footer-contact p {
  color: rgba(255,255,255,0.7);
  font-size: 0.86rem;
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.footer-contact i { width: 16px; color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 1.2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  flex-wrap: wrap;
  gap: 0.3rem;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-section: 3rem; }
  .header-top-inner { height: 60px; }
  .brand-tagline { display: none; }
  .header-search input { width: 100px; }
  .nav-toggle { display: flex; }
  .nav-channel { display: none; }
  .nav-channel.open { display: block; }
  .nav-channel .container {
    flex-direction: column;
    align-items: flex-start !important;
    padding: 0.6rem 20px 0.8rem;
    gap: 0.4rem !important;
  }
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
    width: 100%;
  }
  .nav-links a {
    display: block;
    padding: 0.45rem 0;
    border-bottom: none;
    width: 100%;
  }
  .nav-links a.active {
    border-bottom: none;
    background: rgba(217,123,41,0.08);
    border-radius: 8px;
    padding-left: 0.6rem;
  }
  .nav-hot { padding: 0.4rem 0; font-size: 0.8rem; }
  .page-hero { padding: 4rem 0 3rem; min-height: 0; }
  .product-grid { grid-template-columns: 1fr; }
  .strength-grid { grid-template-columns: 1fr 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  body { font-size: 0.92rem; }
  .header-tools .btn-sm { display: none; }
  .header-search input { width: 70px; }
  .strength-grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .cta-actions { flex-direction: column; }
  .cta-phone { font-size: 1.3rem; }
  .product-card .card-body h3 { font-size: 1rem; }
  .process-step { padding: 1.4rem 1.1rem; }
}