/* roulang page: index */
:root{
  --brand-1:#FF6A3D;
  --brand-2:#FF9A55;
  --brand-hover:#F04E23;
  --ink:#222A35;
  --ink-soft:#5A6472;
  --bg:#F9F7F4;
  --card:#FFFFFF;
  --line:#E8E4DE;
  --line-light:#EDE9E3;
  --dark:#1D2633;
  --success:#2FBF71;
  --disabled-bg:#E0DDD8;
  --disabled-text:#A5A09B;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --shadow:0 4px 20px rgba(31,38,45,.06);
  --shadow-hover:0 8px 28px rgba(31,38,45,.10);
  --container:1200px;
  --section-space:clamp(56px,8vw,96px);
  --font-stack:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-stack);background:var(--bg);color:var(--ink);line-height:1.75;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;border:none;background:none;cursor:pointer}
input,textarea{font:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
::selection{background:rgba(255,106,61,.18)}

/* Header */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:40px;height:40px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  color:#fff;font-size:22px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(255,106,61,.28);
}
.brand-text{
  font-size:22px;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.site-nav{display:flex;gap:32px}
.nav-link{
  font-size:15px;font-weight:500;color:var(--ink-soft);
  padding:8px 2px;position:relative;transition:color .2s;
}
.nav-link:hover{color:var(--ink)}
.nav-link.active{color:var(--ink);font-weight:600}
.nav-link.active::after{
  content:'';position:absolute;left:0;bottom:0;width:100%;height:3px;
  border-radius:2px;background:linear-gradient(90deg,var(--brand-1),var(--brand-2));
}
.header-actions{display:flex;align-items:center;gap:14px}
.search-form{
  display:flex;align-items:center;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 12px;height:40px;width:220px;
  transition:border-color .2s,box-shadow .2s;
}
.search-form:focus-within{
  border-color:var(--brand-1);
  box-shadow:0 0 0 3px rgba(255,106,61,.14);
}
.search-form input{
  flex:1;border:none;outline:none;background:transparent;
  font-size:14px;color:var(--ink);
}
.search-form input::placeholder{color:var(--disabled-text);font-size:13px}
.search-form button{
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-soft);transition:color .2s;padding:4px;
}
.search-form button:hover{color:var(--brand-1)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border-radius:8px;align-items:center}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Button */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);font-weight:600;font-size:15px;
  padding:12px 24px;transition:all .25s ease;line-height:1.2;
  white-space:nowrap;cursor:pointer;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  color:#fff;box-shadow:0 4px 16px rgba(255,106,61,.25);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--brand-hover),var(--brand-1));
  box-shadow:0 6px 20px rgba(240,78,35,.32);
  transform:translateY(-2px);
}
.btn-primary:active{transform:scale(.98);box-shadow:0 2px 8px rgba(240,78,35,.25)}
.btn-outline{
  background:#fff;border:1px solid var(--line);color:var(--ink);
}
.btn-outline:hover{
  border-color:var(--brand-1);color:var(--brand-1);
  transform:translateY(-2px);box-shadow:var(--shadow);
}
.btn-outline:active{transform:scale(.98)}
.btn-lg{padding:14px 36px;font-size:16px;border-radius:12px}
.btn-sm{padding:8px 16px;font-size:14px;border-radius:8px}
.btn:focus-visible{outline:3px solid rgba(255,106,61,.4);outline-offset:2px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:80px 0 0;background:var(--bg)}
.hero-bg{
  position:absolute;top:0;right:0;width:60%;height:100%;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.18;pointer-events:none;
}
.hero-bg::after{
  content:'';position:absolute;top:-80px;right:-120px;width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.20),rgba(255,154,85,.06) 60%,transparent 70%);
}
.hero-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;gap:56px;
  padding-bottom:64px;
}
.hero-content{flex:1.1;min-width:0}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,106,61,.10);color:var(--brand-hover);
  font-size:13px;font-weight:600;border-radius:100px;
  padding:6px 16px;margin-bottom:20px;
}
.hero-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--success)}
.hero h1{
  font-size:clamp(36px,4.5vw,54px);font-weight:800;line-height:1.2;
  letter-spacing:-.01em;margin-bottom:20px;
}
.hero-sub{
  font-size:16px;line-height:1.75;color:var(--ink-soft);
  max-width:540px;margin-bottom:32px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.hero-note{font-size:13px;color:var(--ink-soft)}
.hero-visual{flex:1;min-width:0;position:relative}
.hero-card{
  background:var(--card);border-radius:var(--radius-lg);
  border:1px solid var(--line-light);box-shadow:var(--shadow);
  padding:20px;position:relative;
}
.hero-card-badge{
  position:absolute;top:-14px;left:24px;z-index:3;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  color:#fff;font-size:13px;font-weight:600;
  border-radius:100px;padding:6px 16px;
  box-shadow:0 4px 12px rgba(255,106,61,.28);
}
.hero-card img{border-radius:16px;width:100%;height:auto;object-fit:cover}
.hero-card-footer{
  display:flex;justify-content:space-between;gap:12px;
  padding:16px 6px 4px;
}
.hero-card-footer div{display:flex;flex-direction:column}
.hero-card-footer strong{font-size:15px;color:var(--ink)}
.hero-card-footer span{font-size:12px;color:var(--ink-soft)}

/* Stats */
.stats{padding:0 0 64px;position:relative;z-index:3}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:var(--card);border:1px solid var(--line-light);
  border-radius:var(--radius-md);padding:28px 24px;
  text-align:center;box-shadow:var(--shadow);
  transition:transform .25s,box-shadow .25s;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.stat-num{
  font-size:44px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;margin-bottom:8px;
}
.gradient-text{
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  -webkit-text-fill-color:transparent;
}
.stat-label{font-size:13px;color:var(--ink-soft)}

/* Section head */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:40px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.3;
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:'';position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:linear-gradient(180deg,var(--brand-1),var(--brand-2));
}
.section-head p{color:var(--ink-soft);font-size:15px;max-width:560px}

/* Steps */
.steps{padding:var(--section-space) 0;background:var(--card)}
.steps-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:32px;position:relative;
}
.steps-grid::before{
  content:'';position:absolute;top:34px;left:12%;right:12%;
  border-top:2px dashed #E4DCD3;z-index:1;
}
.step-item{
  position:relative;z-index:2;background:var(--bg);
  border:1px solid var(--line-light);border-radius:var(--radius-md);
  padding:36px 28px 28px;transition:box-shadow .25s,transform .25s;
}
.step-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.step-num{
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  color:#fff;font-size:18px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;box-shadow:0 6px 16px rgba(255,106,61,.28);
}
.step-item h3{font-size:19px;font-weight:600;margin-bottom:12px}
.step-item p{font-size:14px;color:var(--ink-soft);line-height:1.7;margin-bottom:16px}
.step-link{
  font-size:14px;font-weight:600;color:var(--brand-1);
  display:inline-flex;align-items:center;gap:4px;transition:gap .2s;
}
.step-link:hover{gap:8px}

/* Cases */
.cases{padding:var(--section-space) 0}
.case-list{display:flex;flex-direction:column;gap:40px}
.case-card{
  display:flex;background:var(--card);border-radius:var(--radius-lg);
  border:1px solid var(--line-light);box-shadow:var(--shadow);
  overflow:hidden;transition:box-shadow .25s;
}
.case-card:hover{box-shadow:var(--shadow-hover)}
.case-card.reverse{flex-direction:row-reverse}
.case-media{flex:1;min-width:0;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{flex:1;padding:40px;display:flex;flex-direction:column;justify-content:center}
.tag{
  display:inline-block;background:#F0ECE6;color:var(--ink-soft);
  font-size:13px;font-weight:500;border-radius:8px;
  padding:4px 12px;margin-bottom:16px;align-self:flex-start;
}
.case-body h3{font-size:22px;font-weight:600;line-height:1.4;margin-bottom:12px}
.case-body p{font-size:15px;color:var(--ink-soft);line-height:1.75;margin-bottom:24px}
.case-metrics{
  display:flex;gap:32px;margin-bottom:24px;flex-wrap:wrap;
}
.case-metrics div{display:flex;flex-direction:column}
.case-metrics strong{font-size:28px;font-weight:800;color:var(--brand-1);font-variant-numeric:tabular-nums}
.case-metrics span{font-size:13px;color:var(--ink-soft);margin-top:2px}

/* FAQ */
.faq{padding:var(--section-space) 0;background:var(--card)}
.faq-inner{max-width:768px;margin:0 auto;text-align:center}
.faq-inner .section-head{justify-content:center;text-align:center}
.faq-inner .section-head h2::before{display:none}
.faq-list{text-align:left;margin-top:28px}
.faq-item{
  background:var(--bg);border:1px solid var(--line-light);
  border-radius:var(--radius-md);margin-bottom:14px;overflow:hidden;
  transition:border-color .25s;
}
.faq-item.open{border-color:rgba(255,106,61,.35);box-shadow:0 4px 14px rgba(31,38,45,.05)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
  text-align:left;gap:16px;transition:color .2s;
}
.faq-q:hover{color:var(--brand-1)}
.faq-icon{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  position:relative;transition:transform .3s;
}
.faq-icon::before,.faq-icon::after{
  content:'';position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%);
  background:#fff;border-radius:2px;
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:280px}
.faq-a p{
  padding:0 24px 22px;font-size:14px;line-height:1.7;color:var(--ink-soft);
  background:var(--bg);border-top:1px solid var(--line-light);padding-top:16px;
}
.faq-more{
  display:inline-block;margin-top:24px;font-size:14px;font-weight:600;
  color:var(--brand-1);transition:gap .2s;
}
.faq-more:hover{color:var(--brand-hover)}

/* News */
.news{padding:var(--section-space) 0}
.news-list{display:flex;flex-direction:column;gap:14px}
.info-card{
  display:flex;align-items:center;gap:24px;
  background:var(--card);border:1px solid var(--line-light);
  border-radius:var(--radius-md);padding:20px 24px;
  transition:box-shadow .25s,transform .25s;position:relative;overflow:hidden;
}
.info-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.info-card-date{
  flex-shrink:0;width:64px;height:64px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(255,106,61,.24);
}
.info-card-date strong{font-size:22px;line-height:1;font-variant-numeric:tabular-nums}
.info-card-date span{font-size:12px;margin-top:4px;opacity:.9}
.info-card-body{flex:1;min-width:0}
.info-card-body h3{
  font-size:17px;font-weight:600;margin-bottom:6px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:color .2s;
}
.info-card:hover .info-card-body h3{color:var(--brand-1)}
.info-card-body p{
  font-size:14px;color:var(--ink-soft);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card-meta{
  display:flex;align-items:center;gap:12px;margin-top:8px;
  font-size:13px;color:var(--ink-soft);
}
.info-card-meta .info-cat{
  background:#F0ECE6;border-radius:6px;padding:2px 10px;font-size:12px;
}
.info-card-more{
  flex-shrink:0;font-size:14px;font-weight:600;color:var(--brand-1);
  display:inline-flex;align-items:center;gap:4px;transition:gap .2s;
}
.info-card:hover .info-card-more{gap:8px}
.news-empty{
  background:var(--card);border:1px dashed #D8D0C6;border-radius:var(--radius-md);
  text-align:center;padding:56px 24px;color:var(--ink-soft);font-size:15px;
}
.news-empty::before{
  content:'📄';display:block;font-size:36px;margin-bottom:12px;opacity:.6;
}

/* CTA */
.cta{padding:var(--section-space) 0;background:var(--bg)}
.cta-banner{
  background:var(--dark);border-radius:var(--radius-lg);
  padding:64px 48px;text-align:center;position:relative;overflow:hidden;
}
.cta-banner::before,.cta-banner::after{
  content:'';position:absolute;border-radius:50%;
  background:rgba(255,106,61,.18);
}
.cta-banner::before{width:240px;height:240px;top:-80px;left:-60px}
.cta-banner::after{width:320px;height:320px;bottom:-140px;right:-80px;background:rgba(255,154,85,.10)}
.cta-banner h2{
  font-size:clamp(24px,3vw,34px);font-weight:700;color:#fff;
  margin-bottom:12px;position:relative;z-index:2;
}
.cta-banner p{
  color:rgba(255,255,255,.75);font-size:15px;margin-bottom:32px;
  position:relative;z-index:2;
}
.cta-banner .btn{
  position:relative;z-index:2;
  box-shadow:0 4px 20px rgba(255,106,61,.4),0 0 0 4px rgba(255,255,255,.08);
}

/* Footer */
.site-footer{background:var(--dark);color:#A9B2BE;font-size:14px}
.footer-main{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;
  padding:56px 0 40px;
}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-text{
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.footer-brand .brand-icon{
  background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
}
.footer-brand p{font-size:13px;line-height:1.7;max-width:280px}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;
}
.footer-col a{
  display:block;color:#A9B2BE;font-size:14px;padding:6px 0;
  transition:color .2s,padding-left .2s;
}
.footer-col a:hover{color:#fff;padding-left:6px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;font-size:13px;opacity:.7;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:inherit}
.footer-bottom a:hover{color:#fff}

/* Responsive */
@media (max-width:992px){
  .site-nav{
    position:fixed;top:72px;left:0;right:0;z-index:110;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:12px 24px;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:all .25s ease;box-shadow:0 12px 24px rgba(31,38,45,.06);
  }
  .site-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .site-nav .nav-link{padding:14px 0;font-size:16px;border-bottom:1px solid #F4F0EA}
  .site-nav .nav-link:last-child{border-bottom:none}
  .site-nav .nav-link.active::after{display:none}
  .site-nav .nav-link.active{color:var(--brand-1)}
  .nav-toggle{display:flex}
  .search-form{width:170px}
  .hero-inner{flex-direction:column;gap:40px;padding-bottom:48px}
  .hero-content{text-align:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-visual{width:100%;max-width:560px;margin:0 auto}
  .steps-grid{grid-template-columns:1fr;gap:24px}
  .steps-grid::before{display:none}
  .step-item{padding:28px 24px}
  .case-card,.case-card.reverse{flex-direction:column}
  .case-media img{height:220px}
  .case-body{padding:28px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .header-inner{height:64px}
  .site-nav{top:64px}
  .search-form{display:none}
  .hero{padding-top:48px}
  .hero h1{font-size:32px}
  .hero-actions .btn{flex:1;justify-content:center}
  .stats-grid{gap:14px}
  .stat-card{padding:20px 12px}
  .stat-num{font-size:32px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .case-card .case-media img{height:190px}
  .cta-banner{padding:44px 24px}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
  .info-card{flex-direction:column;align-items:flex-start;gap:16px}
  .info-card-date{width:52px;height:52px}
  .info-card-date strong{font-size:18px}
}
@media (max-width:576px){
  .container{padding:0 16px}
  .hero h1{font-size:28px}
  .hero-badge{font-size:12px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .btn-lg{padding:14px 24px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .stat-card{padding:16px 10px}
  .stat-num{font-size:28px}
  .steps-grid{gap:16px}
  .step-item{padding:22px 18px}
  .case-body{padding:22px 18px}
  .case-body h3{font-size:19px}
  .case-metrics{gap:20px}
  .case-metrics strong{font-size:22px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .info-card{padding:18px}
  .info-card-body h3{white-space:normal;line-height:1.4}
  .cta-banner{padding:36px 20px;border-radius:18px}
  .footer-main{padding:40px 0 28px}
}

/* roulang page: article */
:root {
  --primary: #FF6A3D;
  --primary-light: #FF9A55;
  --primary-dark: #F04E23;
  --gradient: linear-gradient(135deg, #FF6A3D 0%, #FF9A55 100%);
  --ink: #222A35;
  --ink-soft: #5A6472;
  --bg: #F9F7F4;
  --card: #FFFFFF;
  --line: #E8E4DE;
  --dark: #1D2633;
  --green: #2FBF71;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow: 0 4px 20px rgba(31, 38, 45, .06);
  --shadow-hover: 0 12px 32px rgba(31, 38, 45, .10);
  --container: 1200px;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
button { font-family: inherit; border: 0; cursor: pointer; }
input, textarea, select { font-family: inherit; }

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--gradient);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 4px 14px rgba(255, 106, 61, .32);
}
.brand-text {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .02em;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 8px 2px;
  position: relative;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active {
  color: var(--ink);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 4px;
  border-radius: 4px;
  background: var(--gradient);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.search-form {
  display: flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 6px 8px 6px 14px;
  width: 220px;
  transition: border-color .2s, box-shadow .2s;
}
.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 106, 61, .14);
}
.search-form input {
  border: 0;
  outline: 0;
  flex: 1;
  min-width: 0;
  font-size: 14px;
  background: transparent;
  color: var(--ink);
}
.search-form input::placeholder { color: #A5A09B; font-size: 13px; }
.search-form button {
  background: transparent;
  color: var(--ink-soft);
  padding: 4px 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
}
.search-form button:hover { color: var(--primary); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 26px;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s, color .2s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(240, 78, 35, .28);
}
.btn-primary:active { transform: scale(.97); }
.btn-outline {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn-outline:active { transform: scale(.97); }
.btn-sm { padding: 9px 18px; font-size: 14px; border-radius: 8px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}
.nav-toggle:hover span { background: var(--primary); }

/* ===== 文章主体 ===== */
.article-page {
  padding: 48px 0 88px;
}
.article-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.breadcrumb {
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--ink-soft); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #B9B3AC; }
.breadcrumb .current {
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}
.article-header {
  margin-bottom: 36px;
}
.article-header h1 {
  font-size: clamp(28px, 3.8vw, 42px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 18px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink-soft);
}
.meta-badge {
  background: #FEF0EA;
  color: var(--primary-dark);
  padding: 4px 12px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 12px;
}
.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #C9C4BD;
}
.article-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 52px;
  box-shadow: var(--shadow);
}

/* ===== 正文排版 ===== */
.article-body {
  font-size: 16.5px;
  line-height: 1.85;
  color: #333D49;
}
.article-body p {
  margin-bottom: 1.4em;
}
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 2em 0 .8em;
  line-height: 1.4;
  padding-left: 16px;
  position: relative;
}
.article-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 4px;
  height: 22px;
  border-radius: 4px;
  background: var(--gradient);
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 1.6em 0 .8em;
  line-height: 1.45;
}
.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 1.4em 0 .6em;
}
.article-body ul,
.article-body ol {
  padding-left: 1.6em;
  margin-bottom: 1.4em;
}
.article-body li {
  margin-bottom: .5em;
}
.article-body blockquote {
  background: #FBF7F3;
  border-left: 4px solid var(--primary);
  padding: 16px 22px;
  border-radius: 0 12px 12px 0;
  margin: 1.5em 0;
  color: var(--ink-soft);
  font-size: 15px;
}
.article-body img {
  border-radius: var(--radius-md);
  margin: 1.6em 0;
  box-shadow: var(--shadow);
}
.article-body a {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover { color: var(--primary); }
.article-body code {
  background: #F4F1EC;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}
.article-body pre {
  background: var(--dark);
  color: #EDE8E1;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  margin-bottom: 1.4em;
  font-size: 14px;
  line-height: 1.7;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.4em;
  font-size: 14.5px;
}
.article-body th,
.article-body td {
  border: 1px solid var(--line);
  padding: 10px 14px;
  text-align: left;
}
.article-body th {
  background: #FBF7F3;
  font-weight: 600;
}
.article-body hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2em 0;
}

/* ===== 空状态 ===== */
.article-missing {
  text-align: center;
  padding: 80px 20px;
}
.article-missing .missing-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #FBF0EC;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  margin: 0 auto 22px;
}
.article-missing h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
}
.article-missing p {
  color: var(--ink-soft);
  margin-bottom: 28px;
}

/* ===== 分页导航 ===== */
.article-pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.pager-link {
  font-size: 14px;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .2s, transform .2s;
}
.pager-link:hover {
  color: var(--primary);
  transform: translateX(-2px);
}
.pager-link.next:hover {
  transform: translateX(2px);
}

/* ===== 相关推荐 ===== */
.related-section {
  margin-top: 64px;
}
.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}
.related-head h2 {
  font-size: 26px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}
.related-head h2::before {
  content: '';
  width: 4px;
  height: 24px;
  border-radius: 4px;
  background: var(--gradient);
}
.related-more {
  font-size: 14px;
  color: var(--ink-soft);
}
.related-more:hover { color: var(--primary); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
  display: flex;
  flex-direction: column;
}
.article-card-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.article-card-item .cover {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #F4F1EC;
}
.article-card-item .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.article-card-item:hover .cover img {
  transform: scale(1.04);
}
.article-card-item .body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cat-tag {
  font-size: 12px;
  color: var(--primary-dark);
  background: #FEF0EA;
  padding: 3px 10px;
  border-radius: 100px;
  align-self: flex-start;
}
.article-card-item h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin: 12px 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.article-card-item:hover h3 { color: var(--primary); }
.article-card-item .desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card-item .foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: auto;
  padding-top: 14px;
}
.article-card-item .foot a {
  color: var(--primary-dark);
  font-weight: 500;
}
.article-card-item .foot a:hover { color: var(--primary); }

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.82);
  padding: 64px 0 28px;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .brand-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,.63);
  max-width: 320px;
  margin-top: 14px;
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.63);
  padding: 6px 0;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .search-form { width: 180px; }
}

@media (max-width: 992px) {
  .header-inner { flex-wrap: wrap; height: auto; padding: 14px 24px; gap: 14px; }
  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 20px;
    gap: 4px;
    display: none;
    box-shadow: 0 16px 30px rgba(31,38,45,.06);
  }
  .site-nav.open { display: flex; }
  .nav-link { padding: 10px 0; font-size: 16px; width: 100%; }
  .nav-link.active::after { width: 40px; height: 3px; bottom: 4px; }
  .nav-toggle { display: flex; }
  .search-form { display: none; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .article-page { padding: 36px 0 64px; }
  .article-card { padding: 28px 20px; border-radius: 20px; }
  .article-body { font-size: 16px; line-height: 1.8; }
  .article-body h2 { font-size: 21px; }
  .article-pager { flex-direction: column; align-items: stretch; }
  .pager-link { justify-content: center; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .article-header h1 { font-size: clamp(24px, 5.5vw, 32px); }
}

@media (max-width: 576px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .brand-text { font-size: 18px; }
  .brand-icon { width: 36px; height: 36px; font-size: 19px; border-radius: 10px; }
  .header-inner { padding-left: 16px; padding-right: 16px; }
  .header-actions .btn { padding: 9px 14px; font-size: 13px; }
  .related-grid { grid-template-columns: 1fr; }
  .breadcrumb .current { max-width: 180px; }
  .article-meta { gap: 10px; }
  .article-card { padding: 22px 16px; }
  .article-body { font-size: 15.5px; }
  .article-body ul, .article-body ol { padding-left: 1.4em; }
}

/* roulang page: category1 */
/* ===== Reset ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;background:#F9F7F4;color:#222A35;line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;border:none;}
a{text-decoration:none;color:inherit;transition:color .2s ease;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
input,textarea{font-family:inherit;outline:none;}
ul,ol{list-style:none;}

/* ===== 设计变量 ===== */
:root{
  --primary:#FF6A3D;
  --primary-hover:#F04E23;
  --primary-light:#FF9A55;
  --gradient:linear-gradient(135deg,#FF6A3D 0%,#FF9A55 100%);
  --dark:#1D2633;
  --text:#222A35;
  --text-secondary:#5A6472;
  --bg:#F9F7F4;
  --card-bg:#FFFFFF;
  --border:#EDE9E3;
  --border-light:#E8E4DE;
  --success:#2FBF71;
  --disabled-bg:#E0DDD8;
  --disabled-text:#A5A09B;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --shadow:0 4px 20px rgba(31,38,45,.06);
  --shadow-hover:0 8px 30px rgba(31,38,45,.10);
  --container:1200px;
  --header-h:68px;
}

/* ===== 容器 ===== */
.container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-light);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-icon{
  width:36px;height:36px;border-radius:10px;
  background:var(--gradient);color:#fff;
  font-size:20px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-text{
  font-size:22px;font-weight:800;letter-spacing:.02em;
  background:var(--gradient);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.site-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  padding:8px 18px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:500;color:var(--text-secondary);
  position:relative;transition:all .2s ease;
}
.nav-link:hover{color:var(--text);background:#F9F7F4;}
.nav-link.active{
  color:var(--text);font-weight:600;
}
.nav-link.active::after{
  content:'';position:absolute;bottom:0;left:50%;
  transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;
  background:var(--primary);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-form{
  display:flex;align-items:center;
  background:#fff;border:1px solid var(--border-light);
  border-radius:var(--radius-sm);padding:0 12px;
  width:220px;height:38px;
  transition:border-color .2s,box-shadow .2s;
}
.search-form:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(255,106,61,.15);
}
.search-form input{
  border:none;outline:none;background:transparent;
  flex:1;font-size:13px;color:var(--text);
  min-width:0;
}
.search-form input::placeholder{color:var(--disabled-text);}
.search-form button{
  border:none;background:none;cursor:pointer;
  color:var(--text-secondary);padding:4px;
  display:flex;align-items:center;justify-content:center;
  transition:color .2s;
}
.search-form button:hover{color:var(--primary);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;
  padding:10px 24px;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:all .25s ease;
  line-height:1.4;
}
.btn-primary{
  background:var(--gradient);color:#fff;
  box-shadow:0 2px 10px rgba(255,106,61,.18);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#F04E23,#FF6A3D);
  box-shadow:0 6px 24px rgba(255,106,61,.35);
  transform:translateY(-1px);
}
.btn-primary:active{transform:scale(.97);box-shadow:0 2px 8px rgba(255,106,61,.25);}
.btn-outline{
  background:#fff;color:var(--text);
  border:1px solid var(--border-light);
}
.btn-outline:hover{
  border-color:var(--primary);color:var(--primary-hover);
  background:#FFF9F6;box-shadow:var(--shadow);
}
.btn-outline:active{transform:scale(.97);}
.btn-sm{padding:8px 18px;font-size:14px;border-radius:var(--radius-sm);}
.btn-lg{padding:14px 36px;font-size:16px;border-radius:10px;}

/* 汉堡按钮 */
.nav-toggle{
  display:none;flex-direction:column;gap:4px;
  padding:8px;cursor:pointer;background:none;border:none;
}
.nav-toggle span{
  display:block;width:20px;height:2px;
  background:var(--text);border-radius:2px;
  transition:all .3s ease;
}
.nav-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-secondary);
  margin-bottom:16px;
}
.breadcrumb a{color:var(--text-secondary);transition:color .2s;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{color:var(--disabled-text);}

/* ===== 页面 Hero ===== */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  background:var(--bg);
  overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;
  top:-100px;right:-80px;
  width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,61,.12),transparent 70%);
  pointer-events:none;
}
.page-hero::after{
  content:'';position:absolute;
  bottom:-60px;right:220px;
  width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,154,85,.10),transparent 70%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{
  font-size:clamp(32px,4vw,48px);
  font-weight:800;line-height:1.2;
  letter-spacing:-.01em;
  color:var(--text);
  margin-bottom:20px;
}
.hero-desc{
  font-size:16px;line-height:1.75;
  color:var(--text-secondary);
  max-width:720px;margin-bottom:32px;
}
.hero-actions{
  display:flex;align-items:center;gap:16px;
  flex-wrap:wrap;
}

/* ===== 内容大区 ===== */
.content-section{padding:72px 0;}
.content-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:grid;
  grid-template-columns:1.05fr 1fr;
  box-shadow:var(--shadow);
  transition:box-shadow .3s ease;
}
.content-card:hover{box-shadow:var(--shadow-hover);}
.content-image{
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#FFF5F0,#F9F7F4);
  padding:32px;
  min-height:320px;
}
.content-image img{
  width:100%;height:auto;
  object-fit:cover;
  border-radius:var(--radius-md);
  box-shadow:0 8px 30px rgba(31,38,45,.12);
}
.content-text{
  padding:44px 40px;
  display:flex;flex-direction:column;justify-content:center;
}
.content-text h2{
  font-size:28px;font-weight:700;line-height:1.3;
  margin-bottom:20px;color:var(--text);
  position:relative;padding-left:16px;
}
.content-text h2::before{
  content:'';position:absolute;left:0;top:4px;bottom:4px;
  width:4px;border-radius:2px;
  background:var(--gradient);
}
.content-text p{
  font-size:15px;line-height:1.8;
  color:var(--text-secondary);
  margin-bottom:16px;
}
.content-text p:last-child{margin-bottom:0;}

/* ===== 数据徽章条 ===== */
.stats-section{padding:8px 0 72px;}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:32px 24px;
  text-align:center;
  box-shadow:var(--shadow);
  transition:box-shadow .3s,transform .3s;
}
.stat-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
}
.stat-num{
  font-size:42px;font-weight:800;
  background:var(--gradient);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-num small{font-size:20px;font-weight:700;}
.stat-label{
  font-size:13px;color:var(--text-secondary);
  margin-top:8px;
}

/* ===== 板块标题 ===== */
.section-head{
  display:flex;align-items:flex-end;
  justify-content:space-between;
  gap:24px;flex-wrap:wrap;
  margin-bottom:44px;
}
.section-head h2{
  font-size:32px;font-weight:700;line-height:1.3;
  color:var(--text);
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:'';position:absolute;left:0;top:8px;bottom:8px;
  width:4px;border-radius:2px;
  background:var(--gradient);
}
.section-desc{
  font-size:14px;color:var(--text-secondary);
  max-width:480px;line-height:1.7;
}

/* ===== 核心卖点 ===== */
.features-section{padding:72px 0;background:#fff;border-top:1px solid var(--border-light);border-bottom:1px solid var(--border-light);}
.features-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:36px 28px;
  transition:box-shadow .3s,transform .3s,border-color .3s;
  position:relative;
  overflow:hidden;
}
.feature-card::before{
  content:'';position:absolute;
  top:0;left:0;right:0;height:3px;
  background:var(--gradient);
  opacity:0;transition:opacity .3s;
}
.feature-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
  border-color:rgba(255,106,61,.2);
}
.feature-card:hover::before{opacity:1;}
.feature-icon{
  width:52px;height:52px;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(255,106,61,.1),rgba(255,154,85,.08));
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;
  font-size:24px;
}
.feature-card h3{
  font-size:18px;font-weight:600;
  color:var(--text);margin-bottom:12px;
}
.feature-card p{
  font-size:14px;line-height:1.75;
  color:var(--text-secondary);
}

/* ===== 接入流程 ===== */
.process-section{padding:72px 0;}
.process-grid{
  display:flex;align-items:flex-start;
  justify-content:center;gap:0;
  position:relative;
}
.process-step{
  flex:1;text-align:center;
  padding:0 20px;position:relative;
}
.process-step::before{
  content:'';position:absolute;
  top:26px;left:calc(50% + 40px);
  width:calc(100% - 80px);height:2px;
  background:linear-gradient(90deg,rgba(255,106,61,.3),rgba(255,154,85,.15));
  z-index:0;
  border-radius:1px;
}
.process-step:last-child::before{display:none;}
.process-num{
  width:52px;height:52px;border-radius:50%;
  background:var(--gradient);
  color:#fff;font-size:18px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 20px;
  box-shadow:0 4px 16px rgba(255,106,61,.3);
  position:relative;z-index:1;
}
.process-step h3{
  font-size:17px;font-weight:600;
  color:var(--text);margin-bottom:10px;
}
.process-step p{
  font-size:14px;line-height:1.7;
  color:var(--text-secondary);
  max-width:260px;margin:0 auto;
}

/* ===== 适用场景 ===== */
.scenarios-section{padding:72px 0;background:#fff;border-top:1px solid var(--border-light);}
.scenarios-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.scenario-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:32px 28px;
  position:relative;
  overflow:hidden;
  transition:box-shadow .3s,transform .3s;
}
.scenario-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.scenario-card .scenario-tag{
  display:inline-block;
  font-size:12px;font-weight:600;
  color:var(--primary-hover);
  background:rgba(255,106,61,.08);
  padding:4px 14px;
  border-radius:20px;
  margin-bottom:16px;
}
.scenario-card h3{
  font-size:18px;font-weight:600;
  color:var(--text);margin-bottom:12px;
}
.scenario-card p{
  font-size:14px;line-height:1.75;
  color:var(--text-secondary);
}

/* ===== FAQ ===== */
.faq-section{padding:72px 0;}
.faq-list{
  max-width:768px;margin:0 auto 24px;
}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .3s,box-shadow .3s;
}
.faq-item:hover{border-color:rgba(255,106,61,.25);}
.faq-item.active{
  border-color:rgba(255,106,61,.35);
  box-shadow:var(--shadow);
}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;font-weight:600;
  color:var(--text);
  transition:color .2s;
  gap:16px;
}
.faq-question:hover{color:var(--primary-hover);}
.faq-icon{
  width:28px;height:28px;border-radius:50%;
  background:linear-gradient(135deg,rgba(255,106,61,.1),rgba(255,154,85,.08));
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
  color:var(--primary);
  flex-shrink:0;
  transition:transform .3s;
}
.faq-item.active .faq-icon{transform:rotate(45deg);background:var(--gradient);color:#fff;}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease;
}
.faq-answer-inner{
  padding:0 24px 20px;
  font-size:14px;line-height:1.75;
  color:var(--text-secondary);
  background:#FBF7F3;
  border-top:1px dashed var(--border);
  margin:0 24px;
  padding-top:16px;
  padding-bottom:16px;
  margin-bottom:12px;
  border-radius:0 0 8px 8px;
}
.faq-more{
  display:inline-flex;align-items:center;
  font-size:14px;color:var(--text-secondary);
  margin-left:auto;
  margin-top:8px;
}
.faq-more:hover{color:var(--primary);}
.faq-more-wrap{
  max-width:768px;margin:0 auto;
  text-align:right;
}

/* ===== CTA ===== */
.cta-section{padding:72px 0 80px;}
.cta-banner{
  position:relative;
  background:linear-gradient(rgba(29,38,51,.92),rgba(29,38,51,.95)),url('/assets/images/backpic/back-1.png') center/cover;
  border-radius:var(--radius-lg);
  padding:64px 48px;
  text-align:center;
  overflow:hidden;
}
.cta-banner::before{
  content:'';position:absolute;
  width:280px;height:280px;border-radius:50%;
  background:rgba(255,106,61,.14);
  top:-120px;left:-80px;
  pointer-events:none;
}
.cta-banner::after{
  content:'';position:absolute;
  width:220px;height:220px;border-radius:50%;
  background:rgba(255,154,85,.10);
  bottom:-100px;right:10%;
  pointer-events:none;
}
.cta-banner h2{
  font-size:32px;font-weight:700;
  color:#fff;margin-bottom:16px;
  position:relative;z-index:2;
}
.cta-banner p{
  font-size:16px;line-height:1.7;
  color:rgba(255,255,255,.8);
  max-width:560px;margin:0 auto 32px;
  position:relative;z-index:2;
}
.cta-banner .btn{
  position:relative;z-index:2;
  box-shadow:0 4px 24px rgba(255,106,61,.4);
}

/* ===== Footer ===== */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.75);
  padding:56px 0 0;
}
.footer-main{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:48px;
  padding-bottom:40px;
}
.footer-brand p{
  font-size:14px;line-height:1.8;
  color:rgba(255,255,255,.6);
  margin-top:16px;
  max-width:320px;
}
.footer-brand .brand-icon{
  background:var(--gradient);
}
.footer-brand .brand-text{
  background:var(--gradient);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.footer-col h4{
  font-size:15px;font-weight:600;
  color:#fff;margin-bottom:20px;
  position:relative;padding-bottom:10px;
}
.footer-col h4::after{
  content:'';position:absolute;
  bottom:0;left:0;
  width:28px;height:2px;
  background:var(--gradient);
  border-radius:2px;
}
.footer-col a{
  display:block;padding:6px 0;
  font-size:14px;color:rgba(255,255,255,.65);
  transition:color .2s,transform .2s;
}
.footer-col a:hover{color:#fff;transform:translateX(3px);}
.footer-col span{
  display:block;padding:6px 0;
  font-size:14px;color:rgba(255,255,255,.6);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
  display:flex;align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ===== 响应式 ===== */
@media (max-width:992px){
  .header-inner{gap:12px;}
  .site-nav{
    display:none;
    position:absolute;
    top:var(--header-h);left:0;right:0;
    background:#fff;
    border-bottom:1px solid var(--border-light);
    padding:16px;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    box-shadow:0 16px 40px rgba(31,38,45,.08);
  }
  .site-nav.open{display:flex;}
  .nav-link{padding:12px 16px;text-align:center;}
  .nav-link.active::after{left:calc(50% + 8px);}
  .nav-toggle{display:flex;order:3;}
  .header-actions .search-form{width:auto;flex:1;max-width:200px;}
  
  .content-card{grid-template-columns:1fr;}
  .content-text{padding:32px;}
  .content-image{min-height:240px;}
  
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .features-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .scenarios-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;}
  
  .process-grid{flex-direction:column;gap:32px;align-items:center;}
  .process-step{width:100%;max-width:360px;}
  .process-step::before{display:none;}
}

@media (max-width:768px){
  .container{padding-left:16px;padding-right:16px;}
  .page-hero{padding:56px 0 44px;}
  .page-hero h1{font-size:32px;}
  .hero-desc{font-size:15px;}
  .hero-actions{gap:12px;}
  .btn{padding:10px 18px;font-size:14px;}
  
  .content-section,.features-section,.process-section,.scenarios-section,.faq-section,.cta-section{padding:48px 0;}
  .content-text{padding:24px 20px;}
  .content-text h2{font-size:24px;}
  .content-image{padding:20px;min-height:180px;}
  
  .section-head h2{font-size:26px;}
  
  .features-grid,.scenarios-grid{grid-template-columns:1fr;gap:16px;}
  .footer-main{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  
  .cta-banner{padding:44px 24px;}
  .cta-banner h2{font-size:26px;}
  
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat-card{padding:24px 12px;}
  .stat-num{font-size:32px;}
}

@media (max-width:576px){
  .header-actions .search-form{display:none;}
  .header-actions .btn-sm{padding:8px 14px;font-size:13px;}
  .brand-text{font-size:18px;}
  
  .page-hero{padding:40px 0 32px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .stat-card{padding:20px 8px;}
  .stat-num{font-size:28px;}
  .stat-num small{font-size:16px;}
  
  .content-card{border-radius:var(--radius-md);}
  .content-image{padding:12px;}
  .cta-banner{padding:36px 18px;border-radius:var(--radius-md);}
  .cta-banner h2{font-size:22px;}
  .section-head{margin-bottom:28px;}
}