/* roulang page: index */
:root{
  --brand:#4a5cf7;
  --brand-dark:#3545d9;
  --brand-light:#edf0ff;
  --accent:#ff8a3d;
  --accent-dark:#f0741f;
  --bg-page:#f5f7fb;
  --bg-white:#ffffff;
  --text-main:#17223b;
  --text-secondary:#5a6885;
  --text-weak:#8b95ad;
  --border:#e6eaf3;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(23,34,59,.06);
  --shadow-md:0 8px 30px rgba(23,34,59,.1);
  --shadow-lg:0 20px 50px rgba(23,34,59,.14);
  --nav-height:76px;
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg-page);
  color:var(--text-main);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-md)}
a{text-decoration:none;color:inherit;transition:color .22s ease, background .22s ease, box-shadow .22s ease, transform .22s ease}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 28px}
.text-center{text-align:center}
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-40{margin-top:40px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:100px;
}
.badge-accent{background:#fff4ec;color:var(--accent-dark)}
.badge-green{background:#e9f9f1;color:#12a566}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;border-radius:12px;padding:14px 28px;
  border:2px solid transparent;cursor:pointer;line-height:1.2;
  transition:all .25s ease;font-size:15px;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 6px 20px rgba(74,92,247,.32)}
.btn-brand:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 10px 28px rgba(74,92,247,.42)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 20px rgba(255,138,61,.3)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 28px rgba(255,138,61,.4)}
.btn-outline{background:transparent;border-color:#dfe3f0;color:var(--text-main)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-light)}
.btn-white{background:#fff;color:var(--brand-dark);box-shadow:0 6px 20px rgba(0,0,0,.1)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.18)}
/* header */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--border);
  box-shadow:0 1px 20px rgba(15,25,50,.04);
}
.header-inner{height:var(--nav-height);display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:var(--text-main)}
.brand-icon{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;box-shadow:0 6px 16px rgba(74,92,247,.28)}
.brand span{background:linear-gradient(120deg,var(--brand-dark),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  padding:9px 18px;border-radius:10px;font-weight:500;color:var(--text-secondary);font-size:15px;
}
.main-nav a:hover{color:var(--brand-dark);background:var(--brand-light)}
.main-nav a.active{color:var(--brand-dark);background:var(--brand-light);font-weight:700}
.header-cta{display:flex;align-items:center;gap:14px}
.header-search{position:relative}
.header-search input{
  width:190px;height:42px;border:1.5px solid var(--border);border-radius:100px;
  padding:0 42px 0 18px;font-size:14px;background:#f8f9fc;
  transition:all .25s ease;outline:none;
}
.header-search input:focus{width:230px;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(74,92,247,.1)}
.header-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--text-weak);font-size:14px}
.header-btn{
  height:42px;padding:0 22px;border-radius:100px;background:var(--brand);color:#fff;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;
  box-shadow:0 4px 16px rgba(74,92,247,.3);border:none;cursor:pointer;transition:all .25s;
}
.header-btn:hover{background:var(--brand-dark);transform:translateY(-2px)}
.nav-toggle{display:none;width:44px;height:44px;border:1.5px solid var(--border);background:#fff;border-radius:10px;font-size:18px;color:var(--text-main);cursor:pointer;align-items:center;justify-content:center}
/* hero */
.hero{
  position:relative;padding:110px 0 100px;overflow:hidden;
  background:linear-gradient(135deg, rgba(74,92,247,.97) 0%, rgba(53,69,217,.95) 55%, rgba(36,42,155,.92) 100%);
}
.hero::before{
  content:'';position:absolute;top:0;left:0;width:100%;height:100%;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.14;
}
.hero::after{
  content:'';position:absolute;bottom:-1px;left:0;width:100%;height:120px;
  background:var(--bg-page);clip-path:ellipse(120% 90% at 50% 100%);
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;position:relative;z-index:2}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.15);color:#e7eaff;font-size:13px;font-weight:500;padding:8px 18px;border-radius:100px;border:1px solid rgba(255,255,255,.2);margin-bottom:24px}
.hero-title{font-size:42px;line-height:1.3;color:#fff;font-weight:800;letter-spacing:-.5px;margin-bottom:20px}
.hero-title em{font-style:normal;color:#ffd9c2;border-bottom:4px solid rgba(255,138,61,.55);display:inline-block}
.hero-desc{color:#d9ddff;font-size:17px;line-height:1.85;margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-data{display:flex;gap:40px;margin-top:44px}
.hero-data-item h3{font-size:28px;font-weight:800;color:#fff;margin-bottom:4px}
.hero-data-item p{font-size:14px;color:#b9c0ff}
.hero-card{
  background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:36px;position:relative;
  border:1px solid rgba(255,255,255,.5);
}
.hero-card::before{
  content:'';position:absolute;top:-16px;right:28px;width:60px;height:60px;border-radius:16px;
  background:linear-gradient(135deg,var(--accent),#ffb37e);display:flex;align-items:center;justify-content:center;
  font-family:'Font Awesome 6 Free';font-weight:900;color:#fff;font-size:24px;
  box-shadow:0 8px 24px rgba(255,138,61,.4);
}
.hero-card-title{font-size:22px;font-weight:800;margin-bottom:6px}
.hero-card-sub{color:var(--text-secondary);font-size:14px;margin-bottom:22px}
.hero-card-points{display:grid;gap:14px;margin-bottom:26px}
.hero-point{display:flex;align-items:center;gap:12px;font-size:14.5px;color:var(--text-main)}
.hero-point i{width:24px;height:24px;border-radius:8px;background:var(--brand-light);color:var(--brand-dark);font-size:11px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hero-card-btn{width:100%;justify-content:center}
/* section common */
.section{padding:var(--space-section) 0}
.section-alt{background:var(--bg-white);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:680px;margin:0 auto 52px;text-align:center}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);text-transform:uppercase;letter-spacing:2px;margin-bottom:12px}
.section-title{font-size:36px;font-weight:800;line-height:1.35;letter-spacing:-.5px;margin-bottom:14px}
.section-desc{font-size:16.5px;color:var(--text-secondary);line-height:1.8}
/* features */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{
  background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:30px 24px;transition:all .3s ease;position:relative;overflow:hidden;
}
.feature-card::after{
  content:'';position:absolute;top:0;left:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:0;transition:opacity .3s;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.feature-card:hover::after{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:16px;background:var(--brand-light);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--brand-dark);margin-bottom:20px}
.feature-card:nth-child(2) .feature-icon{background:#fff4ec;color:var(--accent-dark)}
.feature-card:nth-child(3) .feature-icon{background:#e9f9f1;color:#12a566}
.feature-card:nth-child(4) .feature-icon{background:#f4f0ff;color:#8758ff}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.75}
/* topic grid */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.topic-card{
  background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:all .3s ease;
}
.topic-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.topic-media{position:relative;overflow:hidden;height:190px}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.topic-card:hover .topic-media img{transform:scale(1.05)}
.topic-media::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(15,20,40,.35))}
.topic-media .badge{position:absolute;bottom:14px;left:14px;z-index:2}
.topic-card-body{padding:24px}
.topic-card-body h3{font-size:18px;font-weight:700;margin-bottom:10px}
.topic-card-body p{font-size:14px;color:var(--text-secondary);line-height:1.75;margin-bottom:16px}
.topic-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-weak)}
.topic-meta i{font-size:12px;margin-right:4px}
/* content list section */
.content-section{background:linear-gradient(180deg,var(--bg-white),#eef1f9);border-top:1px solid var(--border)}
.cms-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cms-card{
  background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:28px;display:flex;flex-direction:column;gap:14px;transition:all .3s;
  position:relative;overflow:hidden;
}
.cms-card::before{
  content:'';position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--brand);opacity:0;transition:opacity .3s;
}
.cms-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:transparent}
.cms-card:hover::before{opacity:1}
.cms-card-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cms-cat{font-size:12px;font-weight:600;background:var(--brand-light);color:var(--brand-dark);padding:4px 12px;border-radius:100px}
.cms-date{font-size:13px;color:var(--text-weak)}
.cms-title{font-size:18px;font-weight:700;line-height:1.5}
.cms-title:hover{color:var(--brand-dark)}
.cms-excerpt{font-size:14px;color:var(--text-secondary);line-height:1.75}
.cms-link{font-weight:600;font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.cms-link i{transition:transform .25s}
.cms-link:hover i{transform:translateX(4px)}
/* data band */
.data-band{background:linear-gradient(135deg,var(--brand-dark),#2a2a9e);padding:80px 0;position:relative;overflow:hidden}
.data-band::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;opacity:.08}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;position:relative;z-index:2}
.data-item h3{font-size:40px;font-weight:800;color:#fff;margin-bottom:6px}
.data-item h3 span{font-size:20px;margin-left:4px;color:var(--accent)}
.data-item p{color:#b9c0ff;font-size:14px}
/* process */
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;position:relative}
.process-grid::before{
  content:'';position:absolute;top:40px;left:12%;right:12%;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.3;
}
.process-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 24px;text-align:center;position:relative;z-index:2;transition:all .3s}
.process-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.process-num{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;font-weight:800;font-size:20px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 8px 24px rgba(74,92,247,.28);
}
.process-item h3{font-size:17px;font-weight:700;margin-bottom:10px}
.process-item p{font-size:14px;color:var(--text-secondary);line-height:1.75}
/* faq */
.faq-grid{max-width:860px;margin:0 auto;display:grid;gap:16px}
.faq-item{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:box-shadow .3s}
.faq-item.active{box-shadow:var(--shadow-md)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;padding:22px 26px;
  font-size:16px;font-weight:600;background:none;border:none;cursor:pointer;text-align:left;color:var(--text-main);
}
.faq-q i{color:var(--brand);font-size:16px;transition:transform .3s}
.faq-item.active .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 26px}
.faq-item.active .faq-a{max-height:400px;padding-bottom:24px}
.faq-a p{font-size:14.5px;color:var(--text-secondary);line-height:1.85}
/* cta */
.cta-section{position:relative;padding:90px 0;overflow:hidden;background:linear-gradient(120deg,#1d1b4b,#29278f);}
.cta-section::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;opacity:.1;background-position:center}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:700px;margin:0 auto}
.cta-section h2{color:#fff;font-size:36px;font-weight:800;margin-bottom:16px}
.cta-section p{color:#c6cbff;font-size:16px;margin-bottom:32px;line-height:1.8}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
/* footer */
.site-footer{background:#141a33;color:#8f98bc;padding:70px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand{color:#fff}
.footer-brand .brand-icon{width:42px;height:42px}
.footer-brand p{font-size:14px;line-height:1.9;margin-top:20px;color:#777f9e}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:24px;height:2px;background:var(--accent)}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:#777f9e;transition:all .25s}
.footer-col a:hover{color:#fff;padding-left:6px}
.footer-bottom{padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:#5d6585}
.footer-bottom a:hover{color:#fff}
/* mobile nav */
@media screen and (max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:34px}
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-desc{margin-left:auto;margin-right:auto;text-align:center}
  .hero-tag,.hero-actions,.hero-data{justify-content:center}
  .hero-actions,.hero-data{margin-left:auto;margin-right:auto}
  .hero-card{max-width:520px;margin:0 auto;width:100%}
}
@media screen and (max-width:768px){
  :root{--space-section:68px}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:var(--nav-height);left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:16px 20px;gap:6px;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);
    display:none;z-index:99;max-height:calc(100vh - 80px);overflow-y:auto;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 18px;font-size:16px}
  .header-search input{width:150px}
  .header-search input:focus{width:150px}
  .header-btn span{display:none}
  .header-btn{width:42px;padding:0;justify-content:center}
  .hero{padding:72px 0 90px}
  .hero-title{font-size:28px}
  .hero-data{flex-wrap:wrap;gap:20px;justify-content:center}
  .feature-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .process-grid::before{display:none}
  .cms-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:1fr 1fr;gap:20px}
  .cta-section h2{font-size:26px}
  .footer-top{grid-template-columns:1fr 1fr}
  .section-title{font-size:28px}
  .footer-bottom{flex-direction:column;text-align:center;padding:20px 0}
}
@media screen and (max-width:520px){
  .wrap{padding:0 20px}
  .header-search{display:none}
  .header-inner{gap:10px}
  .brand{font-size:17px}
  .brand-icon{width:34px;height:34px;font-size:14px}
  .hero-title{font-size:24px}
  .hero-desc{font-size:15px}
  .topic-card-body{padding:20px}
  .data-item h3{font-size:28px}
  .footer-top{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.05);
  --shadow-md: 0 6px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
  --space-section: 88px;
  --font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;padding:0;font-family:var(--font-family);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:all .25s ease;}
button,input,select,textarea{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== Header / Nav ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);box-shadow:0 1px 4px rgba(15,23,42,.04);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text);white-space:nowrap;}
.brand-icon{display:flex;align-items:center;justify-content:center;width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:12px;color:#fff;font-size:16px;box-shadow:0 4px 12px rgba(37,99,235,.3);}
.main-nav{display:flex;align-items:center;gap:4px;flex:1;margin-left:24px;}
.main-nav a{display:inline-flex;align-items:center;padding:10px 18px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;color:var(--text-weak);transition:all .25s ease;}
.main-nav a:hover{color:var(--primary);background:rgba(37,99,235,.06);}
.main-nav a.active{color:var(--primary);background:rgba(37,99,235,.08);font-weight:600;}
.header-cta{display:flex;align-items:center;gap:14px;}
.header-search{position:relative;display:flex;align-items:center;}
.header-search input{width:200px;height:38px;padding:0 38px 0 14px;border:1px solid var(--border);border-radius:20px;font-size:14px;background:var(--bg-alt);outline:none;transition:all .3s ease;}
.header-search input:focus{width:230px;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(37,99,235,.12);}
.header-search i{position:absolute;right:14px;color:var(--text-weak);font-size:14px;pointer-events:none;}
.header-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 20px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;border-radius:20px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 14px rgba(37,99,235,.3);}
.header-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,.4);}
.header-btn:active{transform:translateY(0);}
.nav-toggle{display:none;width:40px;height:38px;border:1px solid var(--border);background:#fff;border-radius:8px;font-size:16px;color:var(--text);cursor:pointer;align-items:center;justify-content:center;}

/* ===== Page Banner ===== */
.page-banner{position:relative;padding:88px 0 64px;background:linear-gradient(135deg,var(--bg-dark) 0%,#1e3a5f 60%,#2563eb 100%);color:#fff;overflow:hidden;}
.page-banner::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.18;}
.page-banner .wrap{position:relative;z-index:2;}
.page-banner h1{font-size:42px;line-height:1.3;max-width:720px;margin-bottom:20px;font-weight:800;}
.page-banner h1 span{color:#fbbf24;}
.page-banner p{font-size:17px;max-width:620px;color:rgba(255,255,255,.85);margin-bottom:28px;}
.page-banner .banner-tags{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.page-banner .tag{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);border-radius:20px;font-size:13px;font-weight:500;backdrop-filter:blur(8px);}
.page-banner .banner-btn{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;background:#fbbf24;color:#1e293b;font-weight:700;font-size:15px;border-radius:30px;border:none;cursor:pointer;transition:all .3s ease;box-shadow:0 8px 24px rgba(251,191,36,.35);}
.page-banner .banner-btn:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(251,191,36,.45);}

/* ===== Section ===== */
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--bg-dark);color:#fff;}
.section-head{text-align:center;margin-bottom:56px;}
.section-head h2{font-size:32px;font-weight:800;margin:0 0 12px;line-height:1.35;}
.section-head p{font-size:16px;color:var(--text-weak);max-width:640px;margin:0 auto;}
.section-head .section-line{width:56px;height:4px;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:4px;margin:16px auto 0;}

/* ===== Cards ===== */
.card{background:#fff;border-radius:var(--radius-md);overflow:hidden;transition:all .3s ease;border:1px solid var(--border);box-shadow:var(--shadow-sm);}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.card-img{position:relative;overflow:hidden;height:220px;}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-img img{transform:scale(1.05);}
.card-body{padding:28px;}

.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}

/* ===== Step Timeline ===== */
.step-timeline{position:relative;max-width:780px;margin:0 auto;padding-left:40px;}
.step-timeline::before{content:'';position:absolute;left:14px;top:8px;bottom:8px;width:2px;background:linear-gradient(to bottom,var(--primary-light),var(--primary-dark));border-radius:2px;}
.step-item{position:relative;padding:24px 28px;background:#fff;border-radius:var(--radius-md);border:1px solid var(--border);margin-bottom:24px;box-shadow:var(--shadow-sm);transition:all .3s ease;}
.step-item:hover{box-shadow:var(--shadow-md);transform:translateX(4px);}
.step-num{position:absolute;left:-40px;top:24px;width:30px;height:30px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;box-shadow:0 4px 10px rgba(37,99,235,.3);z-index:2;}
.step-item h3{font-size:18px;font-weight:700;margin:0 0 8px;color:var(--text);}
.step-item p{font-size:15px;color:var(--text-weak);margin:0;}

/* ===== Login Methods ===== */
.method-card{text-align:center;padding:40px 28px;background:#fff;border-radius:var(--radius-md);border:1px solid var(--border);transition:all .3s ease;}
.method-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:var(--primary-light);}
.method-icon{width:72px;height:72px;margin:0 auto 20px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-dark));box-shadow:0 8px 20px rgba(37,99,235,.25);}
.method-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.method-card p{font-size:14px;color:var(--text-weak);margin-bottom:16px;}
.method-card .badge{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;background:rgba(37,99,235,.08);color:var(--primary);border-radius:20px;font-size:13px;font-weight:600;}

/* ===== Checklist ===== */
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{display:flex;align-items:flex-start;gap:12px;padding:16px 0;border-bottom:1px solid var(--border);font-size:15px;color:var(--text);}
.check-list li:last-child{border-bottom:none;}
.check-list li i{color:var(--primary);font-size:18px;margin-top:2px;}
.check-list li strong{font-weight:700;margin-right:4px;}

/* ===== Data Bg ===== */
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.data-item{text-align:center;background:#fff;border-radius:var(--radius-md);padding:36px 24px;box-shadow:var(--shadow-sm);border:1px solid var(--border);}
.data-item strong{display:block;font-size:36px;font-weight:800;color:var(--primary);line-height:1.2;margin-bottom:10px;}
.data-item span{font-size:14px;color:var(--text-weak);}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{background:#fff;border-radius:var(--radius-sm);border:1px solid var(--border);margin-bottom:16px;overflow:hidden;transition:all .3s ease;}
.faq-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow-sm);}
.faq-item summary{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);list-style:none;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary i{color:var(--primary);transition:transform .3s ease;font-size:14px;}
.faq-item[open] summary i{ transform:rotate(180deg);}
.faq-item .faq-body{padding:0 24px 20px;font-size:15px;color:var(--text-weak);line-height:1.8;}

/* ===== CTA ===== */
.cta-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:#fff;margin-bottom:12px;}
.cta-logo .brand-icon{width:40px;height:40px;background:#fbbf24;color:#1e293b;}

/* ===== Footer ===== */
.site-footer{background:var(--bg-dark);color:#94a3b8;padding:64px 0 0;font-size:14px;}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;}
.footer-brand .brand{color:#f1f5f9;margin-bottom:16px;}
.footer-brand p{line-height:1.8;width:280px;}
.footer-col h4{color:#f1f5f9;font-size:16px;font-weight:700;margin-bottom:20px;}
.footer-col a{display:block;color:#94a3b8;padding:6px 0;font-size:14px;transition:color .25s ease;}
.footer-col a:hover{color:#fbbf24;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;}
.footer-bottom a{color:#64748b;}
.footer-bottom a:hover{color:#fbbf24;}

/* ===== Micro Layout ===== */
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split-grid .text-block h2{font-size:30px;font-weight:800;line-height:1.35;margin-bottom:16px;}
.split-grid .text-block p{font-size:15px;color:var(--text-weak);margin-bottom:16px;}
.split-grid .image-block{position:relative;}
.split-grid .image-block img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;object-fit:cover;height:420px;}
.two-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .data-grid{grid-template-columns:repeat(2,1fr);}
  .main-nav{gap:2px;margin-left:12px;}
  .main-nav a{padding:8px 12px;font-size:14px;}
  .header-search input{width:140px;}
  .header-search input:focus{width:160px;}
  .footer-top{grid-template-columns:1fr 1fr;}
}
@media screen and (max-width:768px){
  :root{--space-section:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;margin-left:4px;}
  .main-nav.open{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:4px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);}
  .main-nav.open a{width:100%;padding:12px 16px;font-size:15px;}
  .header-search{display:none;}
  .header-btn span{display:none;}
  .header-btn{padding:0 16px;}
  .grid-cards{grid-template-columns:1fr;}
  .data-grid{grid-template-columns:1fr;}
  .split-grid{grid-template-columns:1fr;gap:32px;}
  .split-grid .image-block img{height:300px;}
  .two-list{grid-template-columns:1fr;}
  .page-banner h1{font-size:32px;}
  .page-banner{padding:64px 0 48px;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media screen and (max-width:520px){
  .header-inner{gap:12px;}
  .brand{font-size:16px;}
  .brand-icon{width:32px;height:32px;font-size:14px;}
  .page-banner h1{font-size:26px;}
  .page-banner p{font-size:15px;}
  .section-head h2{font-size:26px;}
  .step-item{padding:20px;}
  .data-item strong{font-size:30px;}
  .cta-logo{font-size:18px;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: article */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --accent: #0ea5e9;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(30, 64, 175, .08);
  --shadow-hover: 0 12px 40px rgba(30, 64, 175, .14);
  --transition: all .25s ease;
  --max-width: 1240px;
  --space: 96px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button, input { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; }
ul, ol, li { list-style: none; }
.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
section { position: relative; }

/* 按钮 */
.btn-primary, .header-btn, .cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 40px;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(37, 99, 235, .25);
}
.btn-primary:hover, .header-btn:hover, .cta-btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37, 99, 235, .32); color: #fff; }
.btn-primary:active, .header-btn:active { transform: translateY(0); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 40px;
  font-size: 15px;
  transition: var(--transition);
  cursor: pointer;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); box-shadow: 0 8px 20px rgba(37, 99, 235, .08); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(37, 99, 235, .3); outline-offset: 2px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(15, 23, 42, .04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .5px;
  white-space: nowrap;
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav a {
  position: relative;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text-weak);
  border-radius: 10px;
  transition: var(--transition);
}
.main-nav a:hover { color: var(--primary); background: var(--primary-light); }
.main-nav a.active { color: var(--primary); background: var(--primary-light); }
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.header-cta { display: flex; align-items: center; gap: 12px; }
.header-search {
  position: relative;
  display: flex;
  align-items: center;
}
.header-search input {
  width: 180px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 40px;
  padding: 0 16px 0 36px;
  font-size: 14px;
  background: var(--bg);
  transition: var(--transition);
}
.header-search input:focus { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, .1); width: 220px; }
.header-search i { position: absolute; left: 14px; color: var(--text-weak); font-size: 14px; }
.header-btn { padding: 0 20px; height: 40px; font-size: 14px; }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* Banner */
.article-banner {
  position: relative;
  padding: 90px 0 80px;
  background: linear-gradient(135deg, rgba(30, 64, 175, .86), rgba(14, 165, 233, .78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.article-banner::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.article-banner .wrap { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.75);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb i { font-size: 11px; color: rgba(255,255,255,.5); }
.article-banner h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 800;
  line-height: 1.35;
  max-width: 900px;
  margin: 0 auto 16px;
  text-shadow: 0 2px 16px rgba(0,0,0,.18);
}
.article-banner p {
  font-size: 16px;
  color: rgba(255,255,255,.85);
  max-width: 700px;
  margin: 0 auto;
}

/* Article Main */
.article-main { padding: 72px 0 96px; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 40px;
  align-items: start;
}
.article-primary { min-width: 0; }
.article-body { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 48px; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-weak);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--primary); }
.article-meta .badge {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 30px;
  font-size: 13px;
}
.article-content { color: #334155; }
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 16px;
  color: var(--text);
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  border-radius: 4px;
}
.article-content h3 { font-size: 20px; font-weight: 700; margin: 28px 0 14px; color: var(--text); }
.article-content p { margin: 0 0 20px; }
.article-content ul, .article-content ol { margin: 0 0 22px; padding-left: 24px; }
.article-content ul li { list-style: disc; margin: 6px 0; }
.article-content ol li { list-style: decimal; margin: 6px 0; }
.article-content blockquote {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 18px 22px;
  border-radius: 0 12px 12px 0;
  margin: 0 0 22px;
  color: var(--text);
  font-style: normal;
}
.article-content a { color: var(--primary); text-decoration: underline; }
.article-content a:hover { color: var(--primary-dark); }
.article-content code {
  background: #f1f5f9;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--primary-dark);
}
.article-content pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 0 0 22px;
  line-height: 1.6;
}
.article-content pre code { background: none; color: inherit; padding: 0; }
.article-content img { border-radius: 12px; margin: 24px 0; box-shadow: var(--shadow); }
.article-content table { width: 100%; border-collapse: collapse; margin: 0 0 22px; }
.article-content th { background: var(--primary-light); color: var(--text); font-weight: 600; padding: 12px 14px; text-align: left; }
.article-content td { border-bottom: 1px solid var(--border); padding: 12px 14px; }
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-tags a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  color: var(--text-weak);
  transition: var(--transition);
}
.article-tags a:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
.article-missing {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 80px 48px;
  text-align: center;
}
.article-missing i {
  font-size: 56px;
  color: var(--border);
  margin-bottom: 20px;
  display: block;
}
.article-missing h2 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.article-missing p { color: var(--text-weak); margin-bottom: 28px; }

/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  transition: var(--transition);
}
.side-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.side-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
}
.side-card h3 i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 14px;
}
.side-nav { display: flex; flex-direction: column; gap: 6px; }
.side-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  background: var(--bg);
  transition: var(--transition);
}
.side-nav a i { color: var(--primary); font-size: 12px; }
.side-nav a:hover { background: var(--primary-light); color: var(--primary); transform: translateX(4px); }
.side-card .side-tip {
  background: var(--bg);
  border-radius: 12px;
  padding: 18px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}
.side-card .side-tip strong { color: var(--primary); }
.side-guide-img {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 18px;
}
.side-guide-img img { width: 100%; height: 140px; object-fit: cover; }
.side-card .side-guide-desc { font-size: 14px; color: var(--text-weak); margin-bottom: 18px; }
.side-card .side-guide-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; color: var(--primary); }
.side-card .side-guide-link:hover { gap: 10px; }

/* Category Cards */
.category-cards { padding: 0 0 96px; }
.category-cards .section-head {
  text-align: center;
  margin-bottom: 44px;
}
.category-cards .section-head .eyebrow {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.category-cards .section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--text); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-grid .cat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.category-grid .cat-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); border-color: rgba(37, 99, 235, .2); }
.category-grid .cat-card .cat-img { height: 170px; overflow: hidden; }
.category-grid .cat-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.category-grid .cat-card:hover .cat-img img { transform: scale(1.05); }
.category-grid .cat-card .cat-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.category-grid .cat-card .cat-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.category-grid .cat-card .cat-body p { font-size: 14px; color: var(--text-weak); flex: 1; margin-bottom: 16px; line-height: 1.7; }
.category-grid .cat-card .cat-body .cat-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; color: var(--primary); }
.category-grid .cat-card .cat-body .cat-link i { transition: transform .25s ease; }
.category-grid .cat-card .cat-body .cat-link:hover i { transform: translateX(4px); }

/* CTA */
.cta-section { padding: 0 0 96px; }
.cta-box {
  background: linear-gradient(135deg, #1e40af, #0ea5e9), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  background-blend-mode: overlay;
  border-radius: 24px;
  padding: 56px 64px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  box-shadow: 0 16px 48px rgba(30, 64, 175, .28);
}
.cta-box .cta-text h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 8px; }
.cta-box .cta-text p { color: rgba(255,255,255,.85); font-size: 15px; max-width: 520px; }
.cta-btn { background: #fff; color: var(--primary); box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.cta-btn:hover { background: #f1f5f9; color: var(--primary-dark); }
.cta-btn i { color: var(--primary); }

/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 64px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-col a {
  display: block;
  font-size: 14px;
  padding: 6px 0;
  color: #94a3b8;
  transition: var(--transition);
}
.footer-col a:hover { color: #fff; padding-left: 8px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  font-size: 13px;
}
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

/* Responsive */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  :root { --space: 72px; }
  .header-inner { flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
  .brand { font-size: 17px; }
  .main-nav {
    order: 3;
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-radius: 14px;
    border: 1px solid var(--border);
    padding: 12px;
    gap: 4px;
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; text-align: left; }
  .header-cta .header-search { display: none; }
  .nav-toggle { display: inline-flex; }
  .article-banner { padding: 64px 0 56px; }
  .article-body { padding: 28px; }
  .article-missing { padding: 48px 24px; }
  .category-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 40px 28px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 520px) {
  .header-inner { gap: 12px; }
  .brand span:last-child { font-size: 15px; }
  .brand-icon { width: 34px; height: 34px; font-size: 14px; }
  .header-btn span { display: none; }
  .header-btn { padding: 0 16px; }
  .article-banner h1 { font-size: 24px; }
  .article-body { padding: 20px 18px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --primary-lighter: #eff6ff;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --bg: #f8fafc;
  --white: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 26px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.06);
  --shadow-md: 0 10px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.12);
  --space-section: 88px;
  --space-section-sm: 56px;
  --transition: all 0.25s ease;
}

/* ========== 基础 Reset ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button, input { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; font-weight: 700; color: var(--dark); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226,232,240,0.8);
  box-shadow: 0 1px 20px rgba(0,0,0,0.04);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.28rem; color: var(--dark); white-space: nowrap; }
.brand-icon {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), #4f46e5);
  color: #fff;
  border-radius: 12px;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}
.brand:hover { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 18px;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  border-radius: 999px;
  transition: var(--transition);
  position: relative;
}
.main-nav a:hover { color: var(--primary); background: var(--primary-lighter); }
.main-nav a.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.header-cta { display: flex; align-items: center; gap: 14px; }
.header-search {
  position: relative;
  display: flex;
  align-items: center;
}
.header-search input {
  width: 190px;
  height: 40px;
  padding: 0 14px 0 40px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
}
.header-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
.header-search i { position: absolute; left: 15px; color: var(--text-muted); font-size: 0.9rem; pointer-events: none; }
.header-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 22px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), #4f46e5);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.header-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(37,99,235,0.38); }
.header-btn:active { transform: translateY(0); }
.nav-toggle { display: none; background: none; border: none; width: 40px; height: 40px; border-radius: 10px; font-size: 1.2rem; color: var(--dark); cursor: pointer; }
.nav-toggle:hover { background: var(--bg); }

/* ========== Hero ========== */
.page-hero {
  position: relative;
  padding: 92px 0 72px;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  background-color: var(--dark);
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.88), rgba(37,99,235,0.72));
  z-index: 1;
}
.page-hero::after {
  content: "";
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,0.18), transparent 65%);
  top: -140px; right: -100px;
  z-index: 1;
}
.page-hero .hero-content { position: relative; z-index: 2; max-width: 820px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: #f1f5f9;
  margin-bottom: 22px;
  backdrop-filter: blur(8px);
}
.hero-badge i { color: var(--accent); }
.page-hero h1 {
  font-size: 2.9rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 18px;
}
.page-hero p.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  max-width: 660px;
  line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 4px 18px rgba(0,0,0,0.15);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 26px rgba(0,0,0,0.22); }
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.45);
  backdrop-filter: blur(8px);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.8); transform: translateY(-2px); }

/* ========== 板块通用 ========== */
.section { padding: var(--space-section) 0; }
.section-dark { background: var(--dark); color: #fff; }
.section-alt { background: var(--white); }
.section-header { text-align: center; margin-bottom: 52px; max-width: 760px; margin-left: auto; margin-right: auto; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  border-radius: 999px;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}
.section-tag.dark { background: rgba(255,255,255,0.1); color: #93c5fd; border: 1px solid rgba(255,255,255,0.15); }
.section-header h2 { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.02em; color: var(--dark); }
.section-dark .section-header h2 { color: #fff; }
.section-header p { font-size: 1rem; color: var(--text-muted); margin-top: 14px; line-height: 1.7; }
.section-dark .section-header p { color: rgba(255,255,255,0.65); }

/* ========== 分类概览卡 ========== */
.overview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.overview-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.overview-card::after {
  content: "";
  position: absolute;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(37,99,235,0.05);
  top: -30px; right: -20px;
  transition: var(--transition);
}
.overview-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: transparent; }
.overview-card:hover::after { transform: scale(2.4); }
.overview-card .icon-wrap {
  width: 54px; height: 54px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}
.icon-wrap.blue { background: var(--primary-light); color: var(--primary); }
.icon-wrap.amber { background: var(--accent-light); color: #d97706; }
.icon-wrap.green { background: #d1fae5; color: #059669; }
.overview-card h3 { font-size: 1.2rem; margin-bottom: 10px; position: relative; z-index: 2; }
.overview-card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; position: relative; z-index: 2; }

/* ========== 资讯卡片 ========== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.news-card .news-cover { position: relative; aspect-ratio: 16/11; overflow: hidden; }
.news-card .news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-card:hover .news-cover img { transform: scale(1.06); }
.news-card .news-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,23,42,0.3), transparent 60%); pointer-events: none; }
.news-tag {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 2;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.news-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }
.news-meta i { margin-right: 4px; }
.news-body h3 { font-size: 1.12rem; line-height: 1.45; margin-bottom: 10px; transition: var(--transition); }
.news-card:hover .news-body h3 { color: var(--primary); }
.news-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; flex: 1; }
.news-link {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
}
.news-link i { transition: transform 0.3s ease; }
.news-card:hover .news-link i { transform: translateX(4px); }

/* ========== 重点功能 ========== */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; align-items: center; }
.feature-visual { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.feature-visual img { width: 100%; height: 100%; object-fit: cover; min-height: 380px; }
.feature-visual .play-btn {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 70px; height: 70px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
  backdrop-filter: blur(8px);
  cursor: pointer;
  transition: var(--transition);
}
.feature-visual .play-btn:hover { transform: translate(-50%,-50%) scale(1.1); background: #fff; }
.feature-info .feature-item { display: flex; gap: 18px; margin-bottom: 30px; }
.feature-info .feature-item:last-child { margin-bottom: 0; }
.feature-info .icon-box {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem;
}
.feature-info h3 { font-size: 1.14rem; margin-bottom: 6px; }
.feature-info p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }

/* ========== 时间线 ========== */
.timeline-wrap { max-width: 780px; margin: 0 auto; position: relative; }
.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 22px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary-light), var(--primary), var(--accent-light));
  border-radius: 2px;
}
.timeline-item { position: relative; padding-left: 70px; margin-bottom: 36px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 14px; top: 2px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--white);
  border: 4px solid var(--primary);
  box-shadow: 0 0 0 5px rgba(37,99,235,0.12);
}
.timeline-item:nth-child(2) .timeline-dot { border-color: var(--accent); box-shadow: 0 0 0 5px rgba(245,158,11,0.12); }
.timeline-item:nth-child(3) .timeline-dot { border-color: #10b981; box-shadow: 0 0 0 5px rgba(16,185,129,0.12); }
.timeline-item:nth-child(4) .timeline-dot { border-color: #8b5cf6; box-shadow: 0 0 0 5px rgba(139,92,246,0.12); }
.timeline-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 26px;
  transition: var(--transition);
}
.timeline-card:hover { box-shadow: var(--shadow-sm); border-color: var(--primary-light); }
.timeline-time { font-size: 0.82rem; font-weight: 600; color: var(--accent); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.timeline-card h3 { font-size: 1.06rem; margin-bottom: 6px; }
.timeline-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* ========== FAQ ========== */
.faq-grid { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
.faq-q {
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--dark);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q i { transition: transform 0.3s ease; color: var(--text-muted); font-size: 0.9rem; }
.faq-item.active .faq-q i { transform: rotate(180deg); color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a p { padding: 0 26px 24px; font-size: 0.93rem; color: var(--text-muted); line-height: 1.75; }

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  background-color: var(--dark);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.92), rgba(37,99,235,0.78));
}
.cta-section::after {
  content: "";
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,0.2), transparent 60%);
  bottom: -150px; left: -100px;
}
.cta-content { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; }
.cta-content h2 { font-size: 2.1rem; font-weight: 800; color: #fff; margin-bottom: 16px; line-height: 1.3; }
.cta-content p { color: rgba(255,255,255,0.8); font-size: 1rem; margin-bottom: 30px; line-height: 1.7; }
.cta-btn-group { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.btn-white { background: #fff; color: var(--primary); box-shadow: 0 5px 20px rgba(0,0,0,0.18); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,0.25); }
.btn-ghost-white { background: transparent; border: 1.5px solid rgba(255,255,255,0.4); color: #fff; }
.btn-ghost-white:hover { background: rgba(255,255,255,0.12); }

/* ========== 页脚 ========== */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.75); padding: 64px 0 32px; }
.site-footer .brand { color: #fff; margin-bottom: 16px; }
.site-footer .footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-footer .footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.5); margin-top: 14px; }
.site-footer .footer-col h4 { color: #fff; font-size: 0.98rem; font-weight: 600; margin-bottom: 18px; }
.site-footer .footer-col a {
  display: block;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
  transition: var(--transition);
}
.site-footer .footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--accent); }

/* ========== 面包屑 ========== */
.breadcrumb-bar { background: var(--white); padding: 14px 0; border-bottom: 1px solid var(--border); }
.breadcrumb-bar .wrap { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-muted); }
.breadcrumb-bar a { color: var(--text-muted); transition: var(--transition); }
.breadcrumb-bar a:hover { color: var(--primary); }
.breadcrumb-bar .sep { color: #cbd5e1; }
.breadcrumb-bar .current { color: var(--primary); font-weight: 500; }

/* ========== 数据统计 ========== */
.stats-section { background: var(--white); border-bottom: 1px solid var(--border); padding: 36px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item .num { font-size: 2rem; font-weight: 800; color: var(--primary); font-family: "Segoe UI", -apple-system, sans-serif; }
.stat-item .label { font-size: 0.84rem; color: var(--text-muted); margin-top: 4px; }

/* ========== 响应式 ========== */
@media screen and (max-width: 1024px) {
  .overview-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer .footer-top { grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
  .header-search { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media screen and (max-width: 768px) {
  :root { --space-section: 56px; }
  .site-header .wrap { height: 64px; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 4px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    display: none;
    max-height: 60vh;
    overflow-y: auto;
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; padding: 12px 16px; border-radius: 12px; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .header-btn span { display: none; }
  .header-btn { width: 40px; padding: 0; justify-content: center; }
  .page-hero { padding: 60px 0 50px; }
  .page-hero h1 { font-size: 2rem; }
  .page-hero p.hero-sub { font-size: 1rem; }
  .overview-grid, .news-grid, .feature-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.6rem; }
  .site-footer .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .timeline-item { padding-left: 60px; }
  .cta-content h2 { font-size: 1.6rem; }
}

@media screen and (max-width: 520px) {
  .site-footer .footer-top { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .page-hero h1 { font-size: 1.7rem; }
  .brand { font-size: 1.05rem; }
  .brand-icon { width: 32px; height: 32px; font-size: 0.85rem; border-radius: 10px; }
}

/* ========== 辅助 ========== */
::selection { background: rgba(37,99,235,0.15); color: var(--primary); }
:focus-visible { outline: 3px solid rgba(37,99,235,0.4); outline-offset: 2px; }
.fade-up { animation: fadeUp 0.6s ease both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* roulang page: category2 */
:root {
        --primary: #4f46e5;
        --primary-light: #6366f1;
        --primary-dark: #4338ca;
        --accent: #0ea5e9;
        --accent-light: #38bdf8;
        --dark: #0b1120;
        --dark-soft: #1e293b;
        --light: #f0f4ff;
        --surface: #ffffff;
        --text: #1e293b;
        --text-secondary: #64748b;
        --border: #e2e8f0;
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --radius-xl: 32px;
        --shadow-sm: 0 2px 8px rgba(2, 6, 23, 0.06);
        --shadow-md: 0 10px 30px rgba(2, 6, 23, 0.08);
        --shadow-lg: 0 20px 55px rgba(2, 6, 23, 0.14);
        --shadow-primary: 0 8px 24px rgba(79, 70, 229, 0.28);
        --transition: all .25s cubic-bezier(.4, 0, .2, 1);
    }

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

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        background: var(--light);
        color: var(--text);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

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

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

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

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

    .wrap {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 28px;
    }

    .row {
        max-width: 100%;
        margin-left: -12px;
        margin-right: -12px;
    }

    .columns {
        padding-left: 12px;
        padding-right: 12px;
    }

    .main {
        flex: 1;
    }

    .section-head {
        text-align: center;
        margin-bottom: 56px;
    }

    .section-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(79, 70, 229, 0.08);
        color: var(--primary);
        font-size: 14px;
        font-weight: 700;
        padding: 6px 18px;
        border-radius: 999px;
        letter-spacing: 1px;
        text-transform: uppercase;
        margin-bottom: 18px;
    }

    .section-head h2 {
        font-size: 36px;
        font-weight: 800;
        line-height: 1.2;
        color: var(--text);
        letter-spacing: -0.5px;
        margin-bottom: 16px;
    }

    .section-head p {
        color: var(--text-secondary);
        font-size: 16px;
        max-width: 640px;
        margin: 0 auto;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        border: none;
        border-radius: 999px;
        padding: 13px 30px;
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        text-decoration: none;
        line-height: 1.4;
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #ffffff;
        box-shadow: var(--shadow-primary);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 32px rgba(79, 70, 229, 0.38);
        color: #fff;
    }

    .btn-ghost {
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        border: 1px solid rgba(255, 255, 255, 0.42);
        backdrop-filter: blur(8px);
    }

    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.24);
        color: #fff;
        transform: translateY(-2px);
    }

    .btn-white {
        background: #fff;
        color: var(--primary);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    }

    .btn-white:hover {
        transform: translateY(-2px);
        color: var(--primary-dark);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
    }

    /* ============ Header / Nav ============ */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 200;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 2px 16px rgba(2, 6, 23, 0.04);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 22px;
        height: 76px;
        position: relative;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 800;
        color: var(--text);
        text-decoration: none;
        white-space: nowrap;
    }

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

    .brand-icon {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 16px;
        box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
        flex-shrink: 0;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .main-nav a {
        padding: 9px 20px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 600;
        color: var(--text-secondary);
        text-decoration: none;
        transition: var(--transition);
        letter-spacing: 0.2px;
    }

    .main-nav a:hover {
        color: var(--primary);
        background: rgba(79, 70, 229, 0.07);
    }

    .main-nav a.active {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
    }

    .header-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .header-search {
        display: flex;
        align-items: center;
        background: #f1f4f9;
        border-radius: 999px;
        padding: 0 14px;
        height: 42px;
        border: 1px solid transparent;
        transition: var(--transition);
        width: 200px;
    }

    .header-search:focus-within {
        border-color: var(--primary);
        background: #fff;
        box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    }

    .header-search input {
        border: none;
        outline: none;
        background: none;
        font-size: 14px;
        width: 100%;
        color: var(--text);
    }

    .header-search input::placeholder {
        color: #94a3b8;
    }

    .header-search i {
        color: #94a3b8;
        font-size: 14px;
        margin-left: 8px;
        flex-shrink: 0;
    }

    .header-btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        border: none;
        border-radius: 999px;
        padding: 11px 24px;
        color: #fff;
        font-weight: 600;
        font-size: 14px;
        cursor: pointer;
        transition: var(--transition);
        box-shadow: var(--shadow-primary);
        white-space: nowrap;
    }

    .header-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 28px rgba(79, 70, 229, 0.42);
    }

    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border-radius: 12px;
        background: #f1f4f9;
        border: none;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: var(--text);
        font-size: 18px;
        transition: var(--transition);
    }

    .nav-toggle:hover {
        background: rgba(79, 70, 229, 0.1);
        color: var(--primary);
    }

    /* ============ Page Banner ============ */
    .page-banner {
        position: relative;
        background-position: center;
        background-size: cover;
        background-repeat: no-repeat;
        padding: 108px 0 110px;
        display: flex;
        align-items: center;
        overflow: hidden;
    }

    .page-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11, 17, 32, 0.94) 10%, rgba(79, 70, 229, 0.72) 50%, rgba(14, 165, 233, 0.46) 100%);
    }

    .banner-content {
        position: relative;
        z-index: 2;
        color: #fff;
        max-width: 780px;
    }

    .banner-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.18);
        border: 1px solid rgba(255, 255, 255, 0.28);
        backdrop-filter: blur(8px);
        border-radius: 999px;
        padding: 7px 20px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 1px;
        margin-bottom: 28px;
        color: #fff;
    }

    .banner-content h1 {
        font-size: 46px;
        font-weight: 800;
        line-height: 1.22;
        letter-spacing: -1px;
        margin-bottom: 20px;
        color: #fff;
    }

    .banner-content p {
        font-size: 17px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.86);
        max-width: 620px;
        margin-bottom: 36px;
    }

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

    .banner-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-top: 46px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.75);
    }

    .banner-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .banner-meta i {
        color: var(--accent-light);
    }

    /* ============ Stats Section ============ */
    .stats-section {
        padding: 70px 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
        margin-top: -32px;
        position: relative;
        z-index: 3;
        border-radius: 0;
    }

    .stats-grid {
        display: flex;
        flex-wrap: wrap;
    }

    .stat-item {
        text-align: center;
        padding: 24px 12px;
        background: var(--surface);
        border-radius: var(--radius-lg);
        transition: var(--transition);
        position: relative;
    }

    .stat-item::after {
        content: '';
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 1px;
        height: 44px;
        background: var(--border);
    }

    .stat-item:last-child::after {
        display: none;
    }

    .stat-item:hover {
        background: rgba(79, 70, 229, 0.02);
    }

    .stat-num {
        display: block;
        font-size: 44px;
        font-weight: 800;
        line-height: 1.1;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 8px;
        letter-spacing: -1px;
    }

    .stat-label {
        font-size: 14px;
        color: var(--text-secondary);
        font-weight: 500;
    }

    /* ============ Category Section ============ */
    .cat-section {
        padding: 100px 0;
        background: var(--light);
    }

    .cat-row {
        display: flex;
        flex-wrap: wrap;
    }

    .cat-card {
        background: #fff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        overflow: hidden;
        height: 100%;
        transition: var(--transition);
        display: flex;
        flex-direction: column;
        box-shadow: var(--shadow-sm);
    }

    .cat-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
        border-color: rgba(79, 70, 229, 0.18);
    }

    .cat-img {
        height: 160px;
        background-size: cover;
        background-position: center;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .cat-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(11, 17, 32, 0.06) 0%, rgba(11, 17, 32, 0.38) 100%);
    }

    .cat-icon-badge {
        position: relative;
        z-index: 2;
        width: 58px;
        height: 58px;
        border-radius: 16px;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(12px);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        color: var(--primary);
        box-shadow: 0 8px 24px rgba(2, 6, 23, 0.14);
    }

    .cat-body {
        padding: 26px 26px 28px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .cat-tag {
        display: inline-flex;
        align-self: flex-start;
        background: rgba(79, 70, 229, 0.08);
        color: var(--primary);
        font-size: 12px;
        font-weight: 700;
        padding: 4px 12px;
        border-radius: 999px;
        margin-bottom: 12px;
    }

    .cat-body h3 {
        font-size: 19px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text);
    }

    .cat-body p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.7;
        flex: 1;
        margin-bottom: 18px;
    }

    .cat-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        font-weight: 700;
        color: var(--primary);
    }

    .cat-link i {
        transition: transform .25s;
    }

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

    /* ============ FAQ Section ============ */
    .faq-section {
        padding: 100px 0;
        background: #fff;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .faq-grid {
        display: flex;
        flex-wrap: wrap;
    }

    .faq-main-col {
        flex: 0 0 66.6667%;
        max-width: 66.6667%;
        padding-right: 24px;
    }

    .faq-side-col {
        flex: 1 1 0;
        padding-left: 24px;
    }

    .faq-accordion {
        margin: 0;
        background: transparent;
    }

    .faq-accordion .accordion-item {
        background: #fff;
        border: 1px solid var(--border);
        border-radius: 16px;
        margin-bottom: 16px;
        overflow: hidden;
        transition: var(--transition);
        position: relative;
    }

    .faq-accordion .accordion-item:hover {
        border-color: rgba(79, 70, 229, 0.25);
    }

    .faq-accordion .accordion-item.is-active {
        border-color: rgba(79, 70, 229, 0.3);
        box-shadow: 0 8px 28px rgba(2, 6, 23, 0.06);
    }

    .faq-accordion .accordion-title {
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
        padding: 22px 90px 22px 26px;
        background: #fff;
        line-height: 1.5;
        position: relative;
        display: flex;
        align-items: flex-start;
        gap: 14px;
    }

    .faq-accordion .accordion-title .fa-circle-question {
        color: var(--primary);
        font-size: 18px;
        margin-top: 2px;
        flex-shrink: 0;
    }

    .faq-accordion .accordion-title::after {
        content: '\f078';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        font-size: 14px;
        color: var(--primary);
        position: absolute;
        right: 28px;
        top: 50%;
        transform: translateY(-50%) rotate(0deg);
        transition: transform .35s, color .3s;
        background: rgba(79, 70, 229, 0.06);
        width: 34px;
        height: 34px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        line-height: 34px;
        text-align: center;
    }

    .faq-accordion .accordion-item.is-active>.accordion-title::after {
        transform: translateY(-50%) rotate(180deg);
        background: var(--primary);
        color: #fff;
    }

    .faq-accordion .accordion-item.is-active .accordion-title {
        color: var(--primary);
    }

    .faq-accordion .accordion-content {
        padding: 4px 26px 24px 26px;
        background: #fff;
        border-top: 1px solid #f1f4f9;
        color: var(--text-secondary);
        font-size: 15px;
        line-height: 1.8;
    }

    .faq-accordion .accordion-content p {
        margin-bottom: 12px;
    }

    .faq-accordion .accordion-content p:last-child {
        margin-bottom: 0;
    }

    .faq-accordion .accordion-content a {
        font-weight: 600;
    }

    /* FAQ sidebar */
    .faq-side-help {
        background: var(--light);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        padding: 34px 30px;
        position: sticky;
        top: 110px;
    }

    .faq-side-help .help-icon {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        color: #fff;
        margin-bottom: 20px;
        box-shadow: var(--shadow-primary);
    }

    .faq-side-help h3 {
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 12px;
        color: var(--text);
    }

    .faq-side-help p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.75;
        margin-bottom: 22px;
    }

    .faq-side-help ul {
        list-style: none;
        margin: 0 0 24px;
        padding: 0;
    }

    .faq-side-help ul li {
        position: relative;
        padding-left: 26px;
        font-size: 14px;
        color: var(--text);
        line-height: 1.7;
        margin-bottom: 10px;
    }

    .faq-side-help ul li::before {
        content: '\f00c';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        color: var(--accent);
        position: absolute;
        left: 0;
        top: 2px;
        font-size: 14px;
    }

    .faq-side-help .help-link-btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--primary);
        font-weight: 600;
        font-size: 14px;
    }

    /* ============ Steps Section ============ */
    .steps-section {
        padding: 100px 0;
        background: var(--dark);
        position: relative;
        overflow: hidden;
    }

    .steps-section::before {
        content: '';
        position: absolute;
        top: -80px;
        right: -80px;
        width: 360px;
        height: 360px;
        background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, transparent 70%);
        border-radius: 50%;
    }

    .steps-section .section-head h2 {
        color: #fff;
    }

    .steps-section .section-head p {
        color: rgba(255, 255, 255, 0.65);
    }

    .steps-section .section-eyebrow {
        background: rgba(255, 255, 255, 0.1);
        color: #93c5fd;
    }

    .steps-row {
        position: relative;
        z-index: 2;
    }

    .step-item {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: var(--radius-lg);
        padding: 38px 30px;
        height: 100%;
        transition: var(--transition);
        position: relative;
    }

    .step-item:hover {
        background: rgba(255, 255, 255, 0.09);
        border-color: rgba(255, 255, 255, 0.18);
        transform: translateY(-4px);
    }

    .step-num {
        display: block;
        font-size: 54px;
        font-weight: 800;
        line-height: 1;
        background: linear-gradient(135deg, #93c5fd, #a5b4fc);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 20px;
        opacity: 0.8;
    }

    .step-item h3 {
        font-size: 19px;
        font-weight: 700;
        margin-bottom: 12px;
        color: #fff;
    }

    .step-item p {
        font-size: 15px;
        line-height: 1.75;
        color: rgba(255, 255, 255, 0.68);
        margin-bottom: 0;
    }

    .step-item .step-line {
        position: absolute;
        right: -12px;
        top: 50%;
        width: 24px;
        height: 1px;
        background: linear-gradient(90deg, rgba(147, 197, 253, 0.5), transparent);
    }

    /* ============ Security Section ============ */
    .security-section {
        padding: 100px 0;
        background: #fff;
        border-bottom: 1px solid var(--border);
    }

    .security-wrap {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }

    .sec-content {
        padding-right: 40px;
    }

    .sec-content h2 {
        font-size: 34px;
        font-weight: 800;
        line-height: 1.25;
        letter-spacing: -0.5px;
        margin-bottom: 20px;
    }

    .sec-content>p {
        color: var(--text-secondary);
        font-size: 16px;
        line-height: 1.8;
        margin-bottom: 28px;
    }

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

    .sec-list li {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        font-size: 16px;
        color: var(--text);
        margin-bottom: 16px;
        line-height: 1.6;
        font-weight: 500;
    }

    .sec-list li i {
        color: var(--accent);
        font-size: 18px;
        margin-top: 3px;
        flex-shrink: 0;
    }

    .sec-card {
        background: var(--light);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        overflow: hidden;
        box-shadow: var(--shadow-md);
        height: 100%;
    }

    .sec-card-img {
        height: 220px;
        background-size: cover;
        background-position: center;
        position: relative;
    }

    .sec-card-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 30%, rgba(11, 17, 32, 0.36));
    }

    .sec-card-body {
        padding: 28px;
    }

    .sec-card-body h4 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text);
    }

    .sec-card-body p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* ============ CTA Section ============ */
    .cta-section {
        padding: 90px 0;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, #271a8c 100%);
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: -120px;
        left: 10%;
        width: 320px;
        height: 320px;
        background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
        border-radius: 50%;
    }

    .cta-section::after {
        content: '';
        position: absolute;
        bottom: -100px;
        right: 8%;
        width: 260px;
        height: 260px;
        background: radial-gradient(circle, rgba(56, 189, 248, 0.22) 0%, transparent 70%);
        border-radius: 50%;
    }

    .cta-box {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 720px;
        margin: 0 auto;
        color: #fff;
    }

    .cta-box h2 {
        font-size: 38px;
        font-weight: 800;
        line-height: 1.25;
        margin-bottom: 18px;
        color: #fff;
        letter-spacing: -0.5px;
    }

    .cta-box p {
        font-size: 17px;
        line-height: 1.75;
        color: rgba(255, 255, 255, 0.75);
        margin-bottom: 36px;
    }

    .cta-buttons {
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .cta-btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        border: 1.5px solid rgba(255, 255, 255, 0.5);
        border-radius: 999px;
        padding: 13px 28px;
        font-size: 15px;
        font-weight: 600;
        color: #fff;
        background: transparent;
        transition: var(--transition);
        cursor: pointer;
    }

    .cta-btn-outline:hover {
        background: rgba(255, 255, 255, 0.12);
        border-color: #fff;
        color: #fff;
        transform: translateY(-2px);
    }

    /* ============ Footer ============ */
    .site-footer {
        background: var(--dark);
        color: rgba(255, 255, 255, 0.65);
        padding: 72px 0 0;
        font-size: 14px;
    }

    .site-footer .wrap {
        max-width: 1200px;
    }

    .footer-top {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 40px;
        padding-bottom: 50px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand {
        max-width: 320px;
    }

    .footer-brand .brand {
        color: #fff;
        font-size: 18px;
        margin-bottom: 16px;
    }

    .footer-brand p {
        font-size: 14px;
        line-height: 1.75;
        color: rgba(255, 255, 255, 0.55);
        margin: 0;
    }

    .footer-col {
        display: flex;
        flex-direction: column;
        min-width: 140px;
    }

    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 18px;
        letter-spacing: 0.5px;
    }

    .footer-col a {
        color: rgba(255, 255, 255, 0.55);
        text-decoration: none;
        font-size: 14px;
        margin-bottom: 10px;
        transition: var(--transition);
    }

    .footer-col a:hover {
        color: #fff;
        padding-left: 4px;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        padding: 24px 0 28px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.38);
    }

    .footer-bottom a {
        color: rgba(255, 255, 255, 0.55);
    }

    .footer-bottom a:hover {
        color: #fff;
    }

    /* ============ Responsive ============ */
    @media (max-width: 1024px) {
        .header-search {
            display: none;
        }

        .main-nav a {
            padding: 9px 14px;
            font-size: 13px;
        }

        .brand {
            font-size: 17px;
        }

        .faq-main-col {
            flex: 0 0 100%;
            max-width: 100%;
            padding-right: 0;
        }

        .faq-side-col {
            flex: 0 0 100%;
            max-width: 100%;
            padding-left: 0;
            margin-top: 30px;
        }

        .faq-side-help {
            position: static;
        }

        .sec-content {
            padding-right: 0;
        }
    }

    @media (max-width: 768px) {
        .site-header {
            position: sticky;
        }

        .header-inner {
            height: 64px;
            gap: 10px;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 14px;
            border-radius: 10px;
        }

        .brand {
            font-size: 16px;
        }

        .main-nav {
            position: absolute;
            top: 64px;
            left: 0;
            right: 0;
            flex-direction: column;
            align-items: stretch;
            background: #fff;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 24px 50px rgba(2, 6, 23, 0.14);
            padding: 12px 20px 20px;
            display: none;
            z-index: 400;
            border-bottom: 1px solid var(--border);
        }

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

        .main-nav a {
            padding: 13px 18px;
            font-size: 15px;
            border-radius: 12px;
        }

        .nav-toggle {
            display: inline-flex;
        }

        .header-btn span {
            display: none;
        }

        .header-btn {
            padding: 11px 16px;
        }

        .page-banner {
            padding: 80px 0 90px;
        }

        .banner-content h1 {
            font-size: 34px;
        }

        .banner-content p {
            font-size: 15px;
        }

        .banner-actions .btn {
            padding: 12px 24px;
            font-size: 14px;
        }

        .stats-section {
            margin-top: 0;
            padding: 50px 0;
        }

        .stat-item::after {
            display: none;
        }

        .stat-item {
            margin-bottom: 10px;
        }

        .cat-section,
        .faq-section,
        .steps-section,
        .security-section,
        .cta-section {
            padding: 64px 0;
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 28px;
        }

        .section-head p {
            font-size: 15px;
        }

        .step-item {
            padding: 28px 24px;
            margin-bottom: 16px;
        }

        .step-item .step-line {
            display: none;
        }

        .sec-content h2 {
            font-size: 28px;
        }

        .cta-box h2 {
            font-size: 30px;
        }

        .footer-top {
            flex-direction: column;
            gap: 30px;
        }

        .footer-col {
            min-width: 100%;
        }

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

    @media (max-width: 520px) {
        .wrap {
            padding: 0 18px;
        }

        .banner-content h1 {
            font-size: 28px;
        }

        .banner-actions {
            flex-direction: column;
        }

        .banner-actions .btn {
            width: 100%;
        }

        .stat-num {
            font-size: 34px;
        }

        .cat-body {
            padding: 20px 20px 24px;
        }

        .faq-accordion .accordion-title {
            font-size: 15px;
            padding: 18px 80px 18px 20px;
            gap: 10px;
        }

        .faq-accordion .accordion-title::after {
            right: 20px;
            width: 30px;
            height: 30px;
            line-height: 30px;
        }

        .faq-accordion .accordion-content {
            padding: 4px 20px 20px 20px;
        }

        .section-head h2 {
            font-size: 25px;
        }

        .step-num {
            font-size: 42px;
        }

        .sec-list li {
            font-size: 15px;
        }

        .cta-buttons {
            flex-direction: column;
        }

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