/* roulang page: index */
:root {
      --primary: #0e234d;
      --primary-dark: #091634;
      --primary-light: #1b3a6b;
      --accent: #d4a643;
      --accent-dark: #b8892f;
      --accent-light: #e9c877;
      --bg: #f4f6fa;
      --bg-white: #ffffff;
      --bg-dark: #0d1c37;
      --text: #1d2735;
      --text-light: #5c6b7d;
      --text-muted: #8a97a8;
      --border: #e4e8ee;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 8px;
      --shadow-sm: 0 2px 8px rgba(14, 31, 61, 0.06);
      --shadow-md: 0 6px 24px rgba(14, 31, 61, 0.09);
      --shadow-lg: 0 16px 48px rgba(14, 31, 61, 0.14);
      --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      --tr: all .3s ease;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    ul, ol { list-style: none; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }
    input { font-family: inherit; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: 10px; padding: 12px 28px; font-size: 15px; line-height: 1.4; transition: var(--tr); border: 2px solid transparent; }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
    .btn-accent { background: var(--accent); color: #091634; }
    .btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
    .btn-outline { background: transparent; border-color: rgba(255,255,255,.7); color: #fff; }
    .btn-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; transform: translateY(-2px); }
    .btn-sm { padding: 8px 20px; font-size: 14px; border-radius: 8px; }
    .btn-lg { padding: 15px 34px; font-size: 16px; }

    .site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
    .header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
    .brand-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--primary); transition: var(--tr); }
    .brand-logo:hover { color: var(--primary-light); }
    .brand-icon { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; border-radius: 10px; font-size: 20px; font-weight: 800; }
    .main-nav { display: flex; align-items: center; gap: 32px; }
    .nav-link { font-weight: 500; font-size: 15px; color: var(--text); position: relative; padding: 8px 2px; transition: var(--tr); }
    .nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--accent); transition: width .3s; border-radius: 2px; }
    .nav-link:hover { color: var(--primary); }
    .nav-link:hover::after { width: 100%; }
    .nav-link.active { color: var(--primary); font-weight: 700; }
    .nav-link.active::after { width: 100%; }
    .nav-cta { margin-left: 8px; }
    .nav-toggle { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 10px; position: relative; z-index: 101; }
    .nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); transition: var(--tr); }

    .hero { position: relative; background-size: cover; background-position: center; padding: 110px 0 100px; color: #fff; }
    .hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(6,17,43,.88) 0%, rgba(14,38,77,.7) 55%, rgba(10,25,55,.35) 100%); }
    .hero-content { position: relative; z-index: 2; max-width: 720px; }
    .hero-tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 100px; background: rgba(212,166,67,.18); border: 1px solid rgba(212,166,67,.4); color: var(--accent-light); font-size: 13px; font-weight: 600; letter-spacing: 1px; margin-bottom: 22px; }
    .hero h1 { font-size: 46px; line-height: 1.25; font-weight: 800; margin-bottom: 20px; letter-spacing: -0.5px; }
    .hero p { font-size: 17px; line-height: 1.8; color: rgba(255,255,255,.85); margin-bottom: 32px; max-width: 600px; }
    .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
    .hero-stats { display: flex; gap: 40px; margin-top: 54px; flex-wrap: wrap; }
    .hero-stat strong { font-size: 30px; font-weight: 800; display: block; }
    .hero-stat span { font-size: 14px; color: rgba(255,255,255,.7); }

    .section { padding: 88px 0; }
    .section-head { max-width: 640px; margin-bottom: 48px; }
    .section-head.center { text-align: center; margin-left: auto; margin-right: auto; }
    .section-tag { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent-dark); letter-spacing: 2px; background: rgba(212,166,67,.12); padding: 5px 14px; border-radius: 100px; margin-bottom: 14px; }
    .section-head h2 { font-size: 34px; line-height: 1.3; font-weight: 800; color: var(--primary); margin-bottom: 12px; letter-spacing: -0.3px; }
    .section-head p { font-size: 16px; color: var(--text-light); line-height: 1.7; }

    .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .feature-card { background: var(--bg-white); border-radius: var(--radius-lg); padding: 34px 28px; border: 1px solid var(--border); transition: var(--tr); }
    .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .feature-card .feature-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 22px; background: rgba(14,35,77,.08); color: var(--primary); margin-bottom: 20px; transition: var(--tr); }
    .feature-card:hover .feature-icon { background: var(--primary); color: #fff; transform: scale(1.05); }
    .feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
    .feature-card p { font-size: 14.5px; color: var(--text-light); line-height: 1.7; }

    .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .category-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 300px; display: flex; align-items: flex-end; box-shadow: var(--shadow-sm); transition: var(--tr); }
    .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
    .category-card-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(9,22,52,0) 20%, rgba(9,22,52,.85) 100%); transition: var(--tr); }
    .category-card-content { position: relative; z-index: 2; padding: 32px; width: 100%; color: #fff; }
    .category-card-content h3 { font-size: 24px; font-weight: 800; margin-bottom: 6px; }
    .category-card-content p { font-size: 14px; color: rgba(255,255,255,.8); margin-bottom: 16px; }
    .category-card-btn { color: var(--accent-light); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
    .category-card-btn i { transition: transform .3s; }
    .category-card:hover .category-card-btn i { transform: translateX(4px); }

    .latest-section { background: var(--bg-white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
    .post-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .post-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px; transition: var(--tr); display: block; }
    .post-card:hover { border-color: transparent; box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .post-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
    .post-cat { background: rgba(212,166,67,.14); color: var(--accent-dark); font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 100px; }
    .post-date { font-size: 13px; color: var(--text-muted); }
    .post-card h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; color: var(--text); }
    .post-card p { font-size: 14px; color: var(--text-light); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .empty-tip { grid-column: 1 / -1; text-align: center; padding: 60px 20px; background: var(--bg); border-radius: var(--radius-md); color: var(--text-muted); font-size: 16px; }

    .stats-band { background: var(--bg-dark); padding: 70px 0; color: #fff; position: relative; overflow: hidden; }
    .stats-band::before { content: ''; position: absolute; top: 0; right: 0; width: 360px; height: 360px; background: radial-gradient(circle, rgba(212,166,67,.16), transparent 70%); }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; position: relative; z-index: 2; }
    .stat-item strong { display: block; font-size: 40px; font-weight: 800; color: var(--accent-light); margin-bottom: 6px; }
    .stat-item span { font-size: 14px; color: rgba(255,255,255,.7); }

    .content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .content-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: var(--tr); display: flex; flex-direction: column; }
    .content-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .content-card .card-img { position: relative; height: 210px; overflow: hidden; }
    .content-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
    .content-card:hover .card-img img { transform: scale(1.06); }
    .card-img-tag { position: absolute; top: 14px; left: 14px; background: rgba(9,22,52,.75); color: #fff; padding: 5px 12px; border-radius: 100px; font-size: 12px; font-weight: 600; backdrop-filter: blur(4px); }
    .content-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
    .content-card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; line-height: 1.45; }
    .content-card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .card-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 600; font-size: 14px; }
    .card-link i { transition: transform .3s; }
    .content-card:hover .card-link i { transform: translateX(4px); }

    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 14px; transition: var(--tr); overflow: hidden; }
    .faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-sm); }
    .faq-question { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; font-weight: 600; font-size: 15.5px; cursor: pointer; color: var(--text); }
    .faq-question i { color: var(--accent-dark); transition: transform .35s; font-size: 14px; }
    .faq-item.active .faq-question i { transform: rotate(180deg); }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
    .faq-item.active .faq-answer { max-height: 300px; }
    .faq-answer p { padding: 0 24px 22px; font-size: 14.5px; color: var(--text-light); line-height: 1.75; }

    .cta-section { position: relative; background-size: cover; background-position: center; padding: 96px 0; color: #fff; text-align: center; }
    .cta-overlay { position: absolute; inset: 0; background: rgba(9,22,52,.82); }
    .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
    .cta-content h2 { font-size: 34px; font-weight: 800; margin-bottom: 16px; }
    .cta-content p { font-size: 16px; color: rgba(255,255,255,.8); margin-bottom: 30px; line-height: 1.8; }
    .cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

    .site-footer { background: var(--bg-dark); color: rgba(255,255,255,.75); }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding: 68px 0 44px; }
    .footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
    .footer-col p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.65); }
    .footer-col a { display: block; font-size: 14px; padding: 6px 0; color: rgba(255,255,255,.65); transition: var(--tr); }
    .footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
    .footer-about p { margin-top: 16px; max-width: 360px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0; }
    .footer-bottom .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
    .footer-bottom p { font-size: 13px; color: rgba(255,255,255,.5); }

    @media (max-width: 1024px) {
      .hero h1 { font-size: 38px; }
      .feature-grid, .content-grid { grid-template-columns: repeat(2, 1fr); }
      .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .split-block { grid-template-columns: 1fr; gap: 32px; }
    }
    @media (max-width: 768px) {
      .header-inner { height: 64px; }
      .main-nav { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; flex-direction: column; align-items: flex-start; gap: 8px; background: #fff; padding: 80px 28px 28px; box-shadow: var(--shadow-lg); transition: right .4s ease; z-index: 100; }
      .main-nav.open { right: 0; }
      .main-nav .btn { width: 100%; margin: 6px 0 0; }
      .nav-toggle { display: flex; }
      .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
      .nav-toggle.active span:nth-child(2) { opacity: 0; }
      .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
      .hero { padding: 80px 0 70px; }
      .hero h1 { font-size: 32px; }
      .hero-stats { flex-wrap: wrap; gap: 24px; }
      .hero-stat strong { font-size: 24px; }
      .section { padding: 64px 0; }
      .section-head h2 { font-size: 28px; }
      .category-grid { grid-template-columns: 1fr; }
      .post-list, .info-list { grid-template-columns: 1fr; }
      .content-grid { grid-template-columns: 1fr; }
      .article-wrap { padding: 24px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom .container { flex-direction: column; text-align: center; }
      .cta-content h2 { font-size: 26px; }
    }
    @media (max-width: 520px) {
      .container { padding: 0 18px; }
      .btn { width: 100%; }
      .hero-actions, .cta-actions { flex-direction: column; }
      .feature-grid, .steps-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr 1fr; }
    }

/* roulang page: category1 */
:root{
  --primary:#1b6b8f;
  --primary-dark:#0e4d6a;
  --primary-light:#e6f2f8;
  --accent:#e8a33d;
  --accent-light:#fdf3e0;
  --bg:#f4f7fa;
  --white:#ffffff;
  --text:#1f2d3a;
  --text-light:#5b6b7a;
  --border:#dce6ee;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(17,62,92,.08);
  --shadow-hover:0 16px 40px rgba(17,62,92,.15);
  --spacing-lg:96px;
  --spacing-md:64px;
  --spacing-sm:32px;
  --transition:.3s ease;
}
*,*::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;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:none;}
input,textarea{font-family:inherit;}
ul,ol{list-style:none;}
.container{width:min(1200px,92%);margin-inline:auto;}
.section{padding:var(--spacing-lg) 0;}
.section-sm{padding:var(--spacing-md) 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border-radius:999px;
  padding:6px 16px;margin-bottom:16px;letter-spacing:.5px;
}
.section-title{
  font-size:clamp(28px,4vw,40px);font-weight:700;line-height:1.3;
  color:var(--text);margin-bottom:14px;letter-spacing:-.5px;
}
.section-subtitle{
  font-size:18px;color:var(--text-light);max-width:680px;margin-bottom:36px;
}
.grid{display:grid;gap:24px;}
.card{
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;
  box-shadow:var(--shadow);transition:all var(--transition);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--primary);}

/* ===== 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);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;}
.brand-logo{display:flex;align-items:center;gap:10px;font-weight:700;}
.brand-icon{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(145deg,var(--primary),var(--primary-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;box-shadow:0 4px 12px rgba(27,107,143,.3);
}
.brand-text{font-size:20px;color:var(--text);letter-spacing:.5px;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav .nav-link{
  font-size:15px;font-weight:500;color:var(--text-light);
  padding:8px 4px;position:relative;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--accent);border-radius:2px;transition:width var(--transition);
}
.main-nav .nav-link:hover{color:var(--primary);}
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after{width:100%;}
.main-nav .nav-link.active{color:var(--primary);font-weight:600;}
.nav-cta{
  background:var(--primary);color:#fff;border-radius:999px;
  padding:10px 22px;font-size:14px;font-weight:600;
  box-shadow:0 4px 14px rgba(27,107,143,.25);
  transition:all var(--transition);
}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(27,107,143,.35);color:#fff;}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;padding:6px;}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s;}

/* ===== Footer ===== */
.site-footer{background:#12202b;color:#c0ccd6;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px;margin-bottom:48px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;position:relative;padding-bottom:10px;}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:32px;height:2px;background:var(--accent);border-radius:2px;}
.footer-about p{margin-top:16px;font-size:14px;line-height:1.8;}
.footer-col a{display:block;color:#c0ccd6;font-size:14px;margin-bottom:10px;transition:color .2s;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;margin-bottom:8px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;}
.footer-bottom p{font-size:13px;color:#8d9aa6;}

/* ===== Hero Banner ===== */
.page-hero{
  position:relative;padding:120px 0 100px;text-align:center;
  background:linear-gradient(135deg,rgba(10,38,56,.92),rgba(27,107,143,.85)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#fff;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;bottom:-50%;left:-20%;width:80%;height:100%;
  background:radial-gradient(circle,rgba(232,163,61,.15),transparent 70%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{
  font-size:clamp(32px,5vw,52px);font-weight:800;margin-bottom:16px;
  text-shadow:0 4px 30px rgba(0,0,0,.3);letter-spacing:-1px;
}
.page-hero p{
  font-size:18px;max-width:720px;margin:0 auto 28px;color:rgba(255,255,255,.9);
}
.hero-badges{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.15);backdrop-filter:blur(8px);
  padding:8px 16px;border-radius:999px;font-size:14px;
  border:1px solid rgba(255,255,255,.2);
}

/* ===== Guide Nav Tabs ===== */
.guide-tabs{
  display:flex;justify-content:center;gap:14px;flex-wrap:wrap;
  margin-top:-36px;position:relative;z-index:5;margin-bottom:48px;
}
.guide-tab{
  background:var(--white);border:1px solid var(--border);
  border-radius:999px;padding:10px 22px;font-size:15px;font-weight:500;
  color:var(--text);box-shadow:var(--shadow);transition:all var(--transition);
}
.guide-tab:hover,.guide-tab.active{
  background:var(--primary);color:#fff;border-color:var(--primary);
  transform:translateY(-2px);
}

/* ===== Grid Layouts ===== */
.card-grid{grid-template-columns:repeat(3,1fr);}
.step-grid{grid-template-columns:repeat(4,1fr);gap:20px;}
.two-col{grid-template-columns:1.2fr 1fr;align-items:center;gap:48px;}

/* ===== Story Cards ===== */
.story-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);
  transition:all var(--transition);
}
.story-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.story-card .cover{width:100%;height:220px;object-fit:cover;}
.story-card .content{padding:24px;}
.story-card .content h3{font-size:20px;margin-bottom:10px;color:var(--text);}
.story-card .content p{font-size:15px;color:var(--text-light);line-height:1.6;}
.tag{
  display:inline-block;background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;margin-bottom:14px;
}

/* ===== Featured Blocks ===== */
.feature-block{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-bottom:64px;background:var(--white);border-radius:var(--radius);
  border:1px solid var(--border);box-shadow:var(--shadow);padding:40px;
}
.feature-block.reverse .feature-text{order:2;}
.feature-block .feature-media img{border-radius:12px;object-fit:cover;width:100%;height:320px;}
.feature-text h3{font-size:26px;margin-bottom:12px;}
.feature-text p{color:var(--text-light);margin-bottom:16px;}
.feature-list li{display:flex;gap:10px;margin-bottom:10px;align-items:flex-start;}
.feature-list li i{color:var(--accent);margin-top:6px;}

/* ===== Stats ===== */
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin:48px 0;
}
.stat-item{
  background:linear-gradient(145deg,#ffffff,#f0f6fa);
  border:1px solid var(--border);border-radius:var(--radius);padding:32px 20px;text-align:center;
  box-shadow:var(--shadow);
}
.stat-item .number{font-size:42px;font-weight:800;color:var(--primary);line-height:1.2;}
.stat-item .label{font-size:14px;color:var(--text-light);margin-top:8px;}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:24px;margin-bottom:16px;box-shadow:var(--shadow);transition:all var(--transition);
}
.faq-item:hover{border-color:var(--primary);}
.faq-item summary{
  font-size:17px;font-weight:600;color:var(--text);cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;
  color:var(--primary);transition:transform .3s;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item .answer{margin-top:14px;color:var(--text-light);line-height:1.7;padding-top:14px;border-top:1px dashed var(--border);}

/* ===== CTA ===== */
.cta-block{
  background:linear-gradient(145deg,var(--primary),var(--primary-dark));
  border-radius:24px;padding:64px 48px;color:#fff;text-align:center;
  position:relative;overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;top:-40%;right:-10%;width:50%;height:150%;
  background:rgba(255,255,255,.05);transform:rotate(20deg);
}
.cta-block h2{font-size:32px;font-weight:800;margin-bottom:14px;position:relative;z-index:1;}
.cta-block p{font-size:17px;opacity:.9;max-width:560px;margin:0 auto 28px;position:relative;z-index:1;}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--accent);color:var(--text);font-size:16px;font-weight:700;
  padding:14px 32px;border-radius:999px;box-shadow:0 8px 22px rgba(0,0,0,.15);
  transition:all var(--transition);border:none;
}
.btn:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(0,0,0,.2);color:var(--text);}
.btn-outline{
  background:transparent;border:2px solid rgba(255,255,255,.4);color:#fff;
}
.btn-outline:hover{background:#fff;color:var(--primary);border-color:#fff;}
.btn-sm{padding:8px 18px;font-size:14px;border-radius:999px;}

/* ===== Misc ===== */
.text-center{text-align:center;}
.mt-1{margin-top:12px;}
.mt-2{margin-top:24px;}
.mt-3{margin-top:48px;}
.mb-1{margin-bottom:12px;}
.mb-2{margin-bottom:24px;}
.mb-3{margin-bottom:48px;}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .stats-row{grid-template-columns:repeat(2,1fr);}
  .feature-block{grid-template-columns:1fr;padding:28px;}
  .feature-block.reverse .feature-text{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .main-nav{
    position:fixed;top:76px;left:0;right:0;
    background:#fff;flex-direction:column;align-items:flex-start;
    padding:24px 20px;box-shadow:0 20px 30px rgba(0,0,0,.1);
    transform:translateY(-150%);transition:transform .4s ease;z-index:1000;
    border-bottom:1px solid var(--border);
  }
  .main-nav.active{transform:translateY(0);}
  .main-nav .nav-link{width:100%;font-size:18px;padding:12px 0;}
  .main-nav .nav-link::after{display:none;}
  .nav-cta{margin-top:12px;width:100%;justify-content:center;}
  .nav-toggle{display:flex;}
  .page-hero{padding:100px 0 70px;}
  .two-col{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-block{padding:48px 24px;}
  .stats-row{grid-template-columns:1fr 1fr;}
}
@media (max-width:520px){
  .stats-row{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .page-hero p{font-size:16px;}
  .cta-block h2{font-size:24px;}
  .brand-text{font-size:18px;}
}

/* roulang page: article */
:root {
    --c-primary: #0a1e3c;
    --c-primary-2: #102a5e;
    --c-primary-3: #163a7b;
    --c-accent: #d4a52c;
    --c-accent-light: #f0c954;
    --c-gold-grad: linear-gradient(135deg, #f0c954 0%, #d4a52c 100%);
    --c-bg: #f4f6fa;
    --c-white: #ffffff;
    --c-text: #1b2540;
    --c-muted: #66748e;
    --c-border: #dde3ec;
    --c-dark: #071527;
    --radius: 14px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 10px rgba(10,30,60,0.05);
    --shadow-md: 0 8px 28px rgba(10,30,60,0.09);
    --shadow-lg: 0 18px 48px rgba(10,30,60,0.14);
    --transition: all .3s cubic-bezier(.4,0,.2,1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

img {
    max-width: 100%;
    display: block;
    border: 0;
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    font: inherit;
    cursor: pointer;
}

input, textarea, select {
    font: inherit;
    border: none;
    outline: none;
    background: none;
}

:focus-visible {
    outline: 3px solid rgba(212, 165, 44, .55);
    outline-offset: 2px;
    border-radius: 6px;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Button ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
    letter-spacing: .3px;
}

.btn-primary {
    background: var(--c-gold-grad);
    color: #1a1608;
    box-shadow: 0 4px 16px rgba(212, 165, 44, .32);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(212, 165, 44, .42);
    color: #1a1608;
}

.btn-outline {
    border-color: rgba(255, 255, 255, .75);
    color: #fff;
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
    color: #fff;
    transform: translateY(-2px);
}

.btn-gold {
    background: var(--c-gold-grad);
    color: #1a1608;
}

.btn-gold:hover {
    box-shadow: 0 8px 24px rgba(212, 165, 44, .4);
    transform: translateY(-2px);
    color: #1a1608;
}

.btn-outline-light {
    border-color: rgba(255, 255, 255, .6);
    color: #fff;
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, .1);
    border-color: #fff;
    color: #fff;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 14px;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 30, 60, .96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    box-shadow: 0 4px 20px rgba(10, 30, 60, .3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 24px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.brand-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-gold-grad);
    color: #1a1608;
    font-size: 22px;
    font-weight: 800;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(212, 165, 44, .35);
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 9px 16px;
    border-radius: 28px;
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, .78);
    transition: var(--transition);
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, .08);
}

.nav-link.active {
    color: #fff;
    background: rgba(212, 165, 44, .18);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 4px;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 3px;
    background: var(--c-accent);
}

.nav-cta {
    margin-left: 12px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(255, 255, 255, .08);
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: 80px 0 90px;
    background:
        linear-gradient(135deg, rgba(7, 21, 39, .94) 0%, rgba(10, 30, 60, .88) 45%, rgba(16, 42, 94, .82) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -60px;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 165, 44, .15) 0%, transparent 70%);
    pointer-events: none;
}

.article-hero .container {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, .55);
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: rgba(255, 255, 255, .65);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--c-accent-light);
}

.breadcrumb .sep {
    color: rgba(255, 255, 255, .3);
}

.breadcrumb .current {
    color: var(--c-accent-light);
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(212, 165, 44, .18);
    border: 1px solid rgba(212, 165, 44, .35);
    color: var(--c-accent-light);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 18px;
    letter-spacing: .5px;
}

.article-hero h1 {
    font-size: clamp(28px, 3.6vw, 44px);
    font-weight: 800;
    color: #fff;
    line-height: 1.35;
    max-width: 900px;
    letter-spacing: .5px;
    margin-bottom: 22px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, .3);
}

.article-hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    font-size: 14px;
    color: rgba(255, 255, 255, .6);
}

.article-hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.article-hero-meta i {
    color: var(--c-accent-light);
    font-size: 15px;
}

/* ===== Article Section ===== */
.article-section {
    padding: 50px 0 70px;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 40px;
    align-items: start;
}

.article-content {
    min-width: 0;
}

.article-cover {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 36px;
    box-shadow: var(--shadow-md);
    position: relative;
    max-height: 480px;
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 21, 39, .25) 0%, transparent 45%);
    pointer-events: none;
}

/* ===== Article Body ===== */
.article-body {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    box-shadow: var(--shadow-sm);
    min-height: 240px;
}

.article-body p {
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 1.6em;
    color: var(--c-text);
}

.article-body p:last-child {
    margin-bottom: 0;
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4 {
    font-weight: 700;
    line-height: 1.4;
    color: var(--c-primary);
    margin: 1.8em 0 .7em;
}

.article-body h2 {
    font-size: 24px;
    padding-left: 16px;
    border-left: 4px solid var(--c-accent);
    border-radius: 2px;
}

.article-body h3 {
    font-size: 20px;
}

.article-body h4 {
    font-size: 17px;
}

.article-body a {
    color: #b8860b;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body a:hover {
    color: var(--c-primary);
}

.article-body ul {
    margin: 1.5em 0;
    padding-left: 24px;
    list-style: none;
}

.article-body ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    line-height: 1.8;
}

.article-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--c-accent);
}

.article-body ol {
    margin: 1.5em 0;
    padding-left: 24px;
    list-style: decimal;
}

.article-body ol li {
    margin-bottom: 10px;
    padding-left: 6px;
    line-height: 1.8;
}

.article-body blockquote {
    background: #faf7ee;
    border-left: 4px solid var(--c-accent);
    border-radius: 0 12px 12px 0;
    padding: 22px 26px;
    margin: 1.8em 0;
    color: #59543f;
    font-style: italic;
    font-size: 15px;
    line-height: 1.85;
}

.article-body img {
    width: 100%;
    height: auto;
    border-radius: 14px;
    margin: 1.8em 0;
    box-shadow: var(--shadow-sm);
}

.article-body img + em {
    display: block;
    text-align: center;
    font-size: 13px;
    color: var(--c-muted);
    margin-top: -1.4em;
    margin-bottom: 1.6em;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.8em 0;
    overflow: hidden;
    border-radius: 10px;
    font-size: 14px;
}

.article-body table th {
    background: var(--c-primary);
    color: #fff;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
}

.article-body table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--c-border);
}

.article-body table tr:last-child td {
    border-bottom: none;
}

.article-body table tr:nth-child(even) {
    background: #f8fafc;
}

.article-body code {
    background: #f1f2f6;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
    color: #d6336c;
    font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
}

.article-body pre {
    background: #0d1a2e;
    color: #d4e0f0;
    padding: 20px 24px;
    border-radius: 14px;
    margin: 1.8em 0;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.7;
}

.article-body pre code {
    background: none;
    padding: 0;
    color: #d4e0f0;
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--c-border);
    margin: 2em 0;
}

.article-body strong {
    font-weight: 700;
    color: #0e2a4d;
}

.article-body em {
    font-style: italic;
}

.article-body iframe {
    max-width: 100%;
    border-radius: 14px;
    margin: 1.5em 0;
}

/* ===== Not found ===== */
.not-found {
    text-align: center;
    padding: 60px 20px;
}

.not-found .nf-icon {
    width: 86px;
    height: 86px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: #f0f1f4;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-muted);
    font-size: 36px;
}

.not-found h2 {
    font-size: 28px;
    color: var(--c-primary);
    margin-bottom: 14px;
}

.not-found p {
    color: var(--c-muted);
    margin-bottom: 28px;
    font-size: 15px;
}

/* ===== Tags ===== */
.article-tags {
    margin-top: 28px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 18px 24px;
}

.tags-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 6px;
}

.tags-label i {
    color: var(--c-accent);
}

.tag {
    display: inline-block;
    background: #f0f2f6;
    color: #4b5877;
    font-size: 13px;
    font-weight: 500;
    padding: 5px 14px;
    border-radius: 30px;
    cursor: default;
    transition: var(--transition);
}

.tag:hover {
    background: rgba(212, 165, 44, .16);
    color: #8a6d13;
}

/* ===== Share ===== */
.article-share {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 16px 24px;
}

.article-share span {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary);
    margin-right: 4px;
}

.article-share a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #f0f2f6;
    color: var(--c-muted);
    font-size: 16px;
    transition: var(--transition);
}

.article-share a:hover {
    background: var(--c-gold-grad);
    color: #1a1608;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(212, 165, 44, .35);
}

/* ===== Sidebar ===== */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 92px;
}

.side-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.side-card:hover {
    box-shadow: var(--shadow-md);
}

.side-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 2px solid #f0f2f6;
    position: relative;
}

.side-card h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 40px;
    height: 2px;
    background: var(--c-accent);
    border-radius: 2px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.info-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 14px;
}

.info-list li .label {
    color: var(--c-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.info-list li .label i {
    color: var(--c-accent);
    width: 18px;
    text-align: center;
}

.info-list li .value {
    font-weight: 600;
    color: var(--c-text);
    text-align: right;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.keyword-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cta-card {
    background:
        linear-gradient(135deg, rgba(10, 30, 60, .9) 0%, rgba(16, 42, 94, .85) 100%),
        url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    border: none;
    color: #fff;
}

.cta-card h3 {
    color: #fff;
    border-bottom-color: rgba(255, 255, 255, .12);
}

.cta-card h3::after {
    background: var(--c-accent);
}

.cta-card p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, .75);
    margin-bottom: 20px;
}

/* ===== CTA Banner ===== */
.cta-banner {
    padding: 80px 0;
    background:
        linear-gradient(135deg, rgba(7, 21, 39, .95) 0%, rgba(10, 30, 60, .9) 55%, rgba(22, 58, 123, .88) 100%),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 165, 44, .12) 0%, transparent 70%);
    pointer-events: none;
}

.cta-banner h2 {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: .5px;
}

.cta-banner p {
    font-size: 16px;
    color: rgba(255, 255, 255, .65);
    margin-bottom: 32px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== Related Categories ===== */
.related-section {
    padding: 70px 0 80px;
}

.section-head {
    text-align: center;
    margin-bottom: 44px;
}

.section-head .sub {
    color: var(--c-accent);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 8px;
}

.section-head h2 {
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 800;
    color: var(--c-primary);
    letter-spacing: .5px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.related-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(212, 165, 44, .4);
}

.related-card .related-img {
    width: 168px;
    height: 100%;
    min-height: 140px;
    flex-shrink: 0;
    overflow: hidden;
}

.related-card .related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.related-card:hover .related-img img {
    transform: scale(1.08);
}

.related-card .related-body {
    padding: 24px 28px;
    flex: 1;
}

.related-card .related-body h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.related-card .related-body p {
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.6;
    margin-bottom: 12px;
}

.related-card .related-link {
    font-size: 14px;
    font-weight: 600;
    color: #b8860b;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.related-card .related-link i {
    transition: transform .3s ease;
}

.related-card:hover .related-link {
    color: #8a6d13;
}

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

/* ===== Footer ===== */
.site-footer {
    background: #071527;
    color: rgba(255, 255, 255, .65);
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 44px;
    padding-bottom: 44px;
}

.footer-about .brand-logo {
    margin-bottom: 14px;
}

.footer-about p {
    font-size: 14px;
    line-height: 1.8;
    margin-top: 12px;
    max-width: 360px;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: var(--c-accent);
    border-radius: 2px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    padding: 5px 0;
    color: rgba(255, 255, 255, .6);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--c-accent-light);
    padding-left: 4px;
}

.footer-col p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .06);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, .4);
}

.footer-bottom p {
    margin: 0;
}

/* ===== Mobile nav ===== */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: minmax(0, 1fr) 300px;
        gap: 28px;
    }

    .article-body {
        padding: 32px 28px;
    }

    .related-grid {
        gap: 20px;
    }

    .related-card .related-img {
        width: 140px;
    }
}

@media (max-width: 900px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        background: rgba(7, 21, 39, .98);
        padding: 16px 24px 24px;
        border-bottom: 1px solid rgba(255, 255, 255, .06);
        box-shadow: 0 16px 40px rgba(0, 0, 0, .3);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        z-index: 999;
    }

    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-link {
        font-size: 16px;
        padding: 12px 16px;
        border-radius: 10px;
        color: rgba(255, 255, 255, .85);
    }

    .nav-link.active {
        background: rgba(212, 165, 44, .16);
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-cta {
        margin: 8px 0 0;
        text-align: center;
    }

    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }

    .brand-text {
        font-size: 17px;
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 18px;
        border-radius: 10px;
    }

    .article-hero {
        padding: 56px 0 64px;
    }

    .article-hero h1 {
        font-size: 26px;
    }

    .article-hero-meta {
        gap: 14px;
        font-size: 13px;
    }

    .article-body {
        padding: 24px 18px;
        border-radius: 16px;
    }

    .article-body p {
        font-size: 15px;
    }

    .article-body h2 {
        font-size: 20px;
    }

    .article-cover {
        border-radius: 16px;
        max-height: 260px;
    }

    .article-tags {
        padding: 14px 16px;
    }

    .article-share {
        padding: 12px 16px;
        flex-wrap: wrap;
    }

    .article-sidebar {
        grid-template-columns: 1fr;
    }

    .cta-banner {
        padding: 56px 0;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
        max-width: 280px;
        margin: 0 auto;
    }

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

    .related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .related-card {
        flex-direction: column;
    }

    .related-card .related-img {
        width: 100%;
        min-height: 160px;
        max-height: 190px;
    }

    .related-card .related-body {
        padding: 20px;
    }

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

    .footer-about p {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .article-hero-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .article-hero h1 {
        font-size: 24px;
    }

    .article-body {
        padding: 20px 14px;
    }

    .article-body blockquote {
        padding: 16px 18px;
    }

    .related-card .related-body h3 {
        font-size: 17px;
    }

    .footer-bottom {
        font-size: 12px;
        padding: 16px 0;
    }
}

/* roulang page: category2 */
/* ============ Design Tokens ============ */
:root{
  --primary:#1e5eff;
  --primary-dark:#1448c8;
  --primary-light:#eaf0ff;
  --accent:#00c2a8;
  --accent-dark:#00a08b;
  --bg:#f7f9fc;
  --bg-white:#ffffff;
  --bg-dark:#0e1a2b;
  --bg-dark-2:#14233a;
  --text:#1a2433;
  --text-secondary:#5b6b7f;
  --text-light:#8a99ae;
  --text-white:#f0f4f8;
  --border:#e3e9f2;
  --border-light:#eff3f8;
  --radius:16px;
  --radius-sm:10px;
  --radius-lg:24px;
  --shadow-sm:0 4px 16px rgba(20,40,80,.06);
  --shadow-md:0 8px 30px rgba(20,40,80,.08);
  --shadow-lg:0 16px 48px rgba(20,40,80,.12);
  --spacing-section:96px;
  --spacing-section-mobile:64px;
  --transition:all .25s ease;
}
/* ============ Reset & Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
ul,ol{list-style:none}
button{border:none;background:none;font:inherit;cursor:pointer;color:inherit}
input,textarea{font:inherit;border:none;outline:none}
h1,h2,h3,h4,h5{line-height:1.3;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4vw,3rem)}
h2{font-size:clamp(1.6rem,2.8vw,2.2rem)}
h3{font-size:1.15rem}
p{margin:0}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:.95rem;padding:12px 28px;border-radius:999px;transition:var(--transition);line-height:1.4;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 16px rgba(30,94,255,.24)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(30,94,255,.32)}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(30,94,255,.2)}
.btn-white{background:#fff;color:var(--primary);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(0,0,0,.16)}
.btn-sm{padding:8px 20px;font-size:.875rem}
/* ============ Header ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light);box-shadow:0 2px 12px rgba(20,40,80,.03)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#6b9fff);color:#fff;font-size:1.1rem;font-weight:800;box-shadow:0 4px 12px rgba(30,94,255,.3)}
.brand-text{font-size:1.2rem;font-weight:800;color:var(--text);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav .nav-link{display:inline-block;padding:9px 18px;border-radius:999px;font-weight:600;font-size:.94rem;color:var(--text-secondary);transition:var(--transition)}
.main-nav .nav-link:hover{color:var(--primary);background:var(--primary-light)}
.main-nav .nav-link.active{color:var(--primary);background:var(--primary-light);box-shadow:inset 0 0 0 1px rgba(30,94,255,.14)}
.nav-cta{margin-left:10px}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px;border-radius:8px}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
/* ============ Hero Banner ============ */
.category-hero{position:relative;padding:90px 0 72px;background:linear-gradient(135deg,var(--bg-dark),var(--bg-dark-2));background-size:cover;background-position:center;color:var(--text-white);overflow:hidden}
.category-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,20,35,.86) 0%,rgba(10,20,35,.6) 60%,rgba(30,94,255,.25) 100%);z-index:1}
.category-hero .container{position:relative;z-index:2}
.hero-breadcrumb{display:flex;align-items:center;gap:8px;font-size:.88rem;color:rgba(255,255,255,.72);margin-bottom:20px}
.hero-breadcrumb a:hover{color:#fff}
.hero-breadcrumb span{opacity:.5}
.hero-breadcrumb .current{color:var(--accent)}
.category-hero h1{font-size:clamp(2.2rem,4.4vw,3.2rem);margin-bottom:18px;max-width:640px}
.hero-highlight{display:inline-block;background:var(--accent);color:#042a24;font-weight:800;font-size:.82rem;padding:4px 14px;border-radius:999px;margin-bottom:16px;letter-spacing:.05em}
.category-hero .hero-desc{font-size:1.05rem;max-width:620px;color:rgba(255,255,255,.86);line-height:1.75}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:36px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14)}
.hero-stat h3{font-size:1.5rem;font-weight:800;color:#fff;margin-bottom:2px}
.hero-stat p{font-size:.85rem;color:rgba(255,255,255,.64)}
/* ============ Section Shared ============ */
.section{padding:var(--spacing-section) 0}
.section-header{max-width:680px;margin-bottom:52px}
.section-tag{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:.82rem;font-weight:700;padding:5px 16px;border-radius:999px;margin-bottom:14px;letter-spacing:.06em}
.section-header h2{font-size:clamp(1.7rem,2.8vw,2.2rem);margin-bottom:12px}
.section-header p{color:var(--text-secondary);font-size:1.02rem}
.text-center{text-align:center}
/* ============ Card Grid ============ */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:36px 32px;border:1px solid var(--border-light);box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden}
.feature-card::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.feature-card:hover::after{opacity:1}
.feature-icon{display:inline-flex;align-items:center;justify-content:center;width:60px;height:60px;border-radius:16px;background:var(--primary-light);color:var(--primary);margin-bottom:24px}
.feature-icon i{font-size:1.6rem}
.feature-card h3{font-size:1.15rem;margin-bottom:10px}
.feature-card p{font-size:.94rem;color:var(--text-secondary);line-height:1.7}
/* ============ Banner Feature ============ */
.highlight-banner{position:relative;padding:90px 0;color:#fff;background-size:cover;background-position:center;background-image:url('/assets/images/backpic/back-2.png')}
.highlight-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,26,43,.9),rgba(14,26,43,.56) 70%,rgba(30,94,255,.28))}
.highlight-banner .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.highlight-title{font-size:1.9rem;margin-bottom:16px;font-weight:800}
.highlight-desc{color:rgba(255,255,255,.84);line-height:1.8;margin-bottom:28px}
.highlight-list li{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px;color:rgba(255,255,255,.9);font-size:.95rem}
.highlight-list i{color:var(--accent);margin-top:4px}
/* ============ Alternating Content ============ */
.alt-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.alt-grid.reversed .alt-media{order:2}
.alt-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.alt-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s ease}
.alt-media:hover img{transform:scale(1.03)}
.alt-media-caption{position:absolute;bottom:16px;left:16px;background:rgba(14,26,43,.78);backdrop-filter:blur(6px);color:#fff;padding:6px 14px;border-radius:999px;font-size:.8rem;display:inline-flex;align-items:center;gap:6px}
.alt-content h3{font-size:1.65rem;margin-bottom:12px}
.alt-content p{color:var(--text-secondary);line-height:1.8;margin-bottom:16px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.tag{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:.82rem;font-weight:600;padding:5px 14px;border-radius:999px;border:1px solid rgba(30,94,255,.12)}
/* ============ Mini Card ============ */
.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.mini-card{background:var(--bg-white);border-radius:var(--radius);padding:28px 24px;border:1px solid var(--border-light);box-shadow:var(--shadow-sm);transition:var(--transition);text-align:center}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--primary)}
.mini-num{font-size:2rem;font-weight:800;color:var(--primary);line-height:1.2;margin-bottom:6px}
.mini-price{font-size:.88rem;font-weight:600;color:var(--accent-dark);margin-bottom:4px}
.mini-title{font-size:.9rem;color:var(--text-secondary)}
/* ============ Data Section ============ */
.data-section{background:var(--bg-dark);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.data-section::before{content:"";position:absolute;top:-60%;right:-10%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(30,94,255,.25),transparent 70%)}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative;z-index:2}
.data-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:var(--transition)}
.data-item:hover{background:rgba(255,255,255,.09);transform:translateY(-4px)}
.data-item .num{font-size:2rem;font-weight:800;color:var(--accent);display:block;margin-bottom:6px}
.data-item .label{font-size:.88rem;color:rgba(255,255,255,.62)}
/* ============ Image Cards ============ */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.media-card{background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:var(--transition)}
.media-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.media-thumb{position:relative;overflow:hidden;aspect-ratio:16/10}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.media-card:hover .media-thumb img{transform:scale(1.04)}
.media-body{padding:24px 24px 28px}
.media-cat{display:inline-block;font-size:.76rem;color:var(--primary);background:var(--primary-light);padding:3px 12px;border-radius:999px;margin-bottom:10px;font-weight:700}
.media-body h3{font-size:1.05rem;margin-bottom:8px;line-height:1.5}
.media-body p{font-size:.88rem;color:var(--text-secondary);line-height:1.65}
/* ============ Process Steps ============ */
step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{position:relative;background:var(--bg-white);border-radius:var(--radius-lg);padding:32px 24px;border:1px solid transparent;box-shadow:var(--shadow-sm);transition:var(--transition)}
.step-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:var(--primary-light);color:var(--primary);font-weight:800;font-size:1rem;margin-bottom:18px}
.step-card h3{font-size:1rem;margin-bottom:8px}
.step-card p{font-size:.87rem;color:var(--text-secondary);line-height:1.65}
/* ============ FAQ ============ */
.faq-section{background:var(--bg-white)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--border-light);border-radius:var(--radius);padding:0 28px;margin-bottom:14px;background:var(--bg);transition:var(--transition);overflow:hidden}
.faq-item details summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:20px 0;font-weight:600;font-size:1rem;list-style:none;user-select:none}
.faq-item details summary::-webkit-details-marker{display:none}
.faq-item details summary .faq-arrow{color:var(--primary);transition:transform .3s ease;flex-shrink:0}
.faq-item details[open] summary .faq-arrow{transform:rotate(45deg)}
.faq-item .faq-answer{padding-bottom:22px;color:var(--text-secondary);font-size:.95rem;line-height:1.75}
/* ============ CTA ============ */
.cta-section{padding:70px 0}
.cta-box{background:linear-gradient(120deg,var(--primary),#4a80ff 60%,#6b9fff);border-radius:var(--radius-lg);padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:32px;color:#fff;position:relative;overflow:hidden;box-shadow:0 20px 48px rgba(30,94,255,.25)}
.cta-box h2{font-size:1.7rem;margin-bottom:8px}
.cta-box p{opacity:.88;font-size:.98rem;max-width:480px}
.cta-actions{display:flex;gap:12px;flex-shrink:0}
/* ============ Footer ============ */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.76);padding:60px 0 0;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:40px}
.footer-about .brand-logo{margin-bottom:16px}
.footer-about p{line-height:1.75;font-size:.9rem;max-width:360px;color:rgba(255,255,255,.66)}
.footer-col h4{font-size:1rem;font-weight:700;color:#fff;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:28px;height:2px;background:var(--accent);border-radius:2px}
.footer-col a{display:block;padding:5px 0;color:rgba(255,255,255,.66);transition:var(--transition)}
.footer-col a:hover{color:#fff;padding-left:6px}
.footer-col p{line-height:1.7;color:rgba(255,255,255,.56);margin-bottom:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:.84rem;color:rgba(255,255,255,.44)}
/* ============ Responsive ============ */
@media (max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .media-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .mini-grid{grid-template-columns:repeat(2,1fr)}
  step-grid{grid-template-columns:repeat(2,1fr)}
  .highlight-banner .container{grid-template-columns:1fr;gap:28px}
  .alt-grid{grid-template-columns:1fr;gap:40px}
  .alt-grid.reversed .alt-media{order:0}
}
@media (max-width:768px){
  .section{padding:var(--spacing-section-mobile) 0}
  .site-header .header-inner{height:66px}
  .main-nav{position:fixed;top:66px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:16px 24px 24px;box-shadow:0 12px 28px rgba(0,0,0,.1);transform:translateY(-120%);transition:transform .3s ease;border-bottom:1px solid var(--border-light)}
  .main-nav.open{transform:translateY(0);max-height:calc(100vh - 66px);overflow-y:auto}
  .main-nav .nav-link{padding:13px 20px}
  .main-nav .nav-cta{margin-left:0;margin-top:12px;text-align:center}
  .nav-toggle{display:flex}
  .category-hero{padding:64px 0 48px}
  .hero-stats{gap:20px}
  .hero-stat h3{font-size:1.2rem}
  .cta-box{padding:36px 24px;flex-direction:column;text-align:center}
  .cta-box p{margin-left:auto;margin-right:auto}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .data-grid{grid-template-columns:1fr 1fr;gap:16px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .feature-grid,.media-grid,.mini-grid,step-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:1fr}
  .brand-text{font-size:1.05rem}
  .category-hero h1{font-size:1.6rem}
  .cat-hero-desc{font-size:.92rem}
  .btn{width:100%;justify-content:center}
  .btn-sm{width:auto}
}