/* roulang page: index */
:root {
  --primary: #1e293b;
  --primary-light: #334155;
  --primary-dark: #0f172a;
  --accent: #d4a574;
  --accent-dark: #b8895a;
  --accent-glow: rgba(212, 165, 116, .28);
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --bg-dark: #0f172a;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, .06);
  --shadow: 0 8px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, .14);
  --transition: .3s ease;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-light);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; transition: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; }

/* 导航 */
.custom-navbar {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1050;
  transition: box-shadow var(--transition);
}
.custom-navbar.scrolled {
  box-shadow: var(--shadow-sm);
}
.brand-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
}
.brand-logo span { margin-left: 2px; }
.brand-logo:hover { color: var(--primary); }
.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-size: .95rem;
}
.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: var(--bg-light);
}
.navbar-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(212, 165, 116, .12);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 40px;
  padding: 4px 6px 4px 16px;
  width: 220px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  flex: 1;
  font-size: .85rem;
  color: var(--text-main);
  padding: 6px 0;
  min-width: 0;
}
.search-box input::placeholder { color: var(--text-light); }
.search-box i {
  background: var(--accent);
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}
.btn {
  border-radius: 50px;
  padding: 10px 24px;
  font-weight: 600;
  font-size: .95rem;
  transition: all var(--transition);
}
.btn-main {
  background: var(--primary);
  color: #fff;
  border: none;
}
.btn-main:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30, 41, 59, .18);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  border: none;
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(212, 165, 116, .35);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .6);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, .1);
  color: #fff;
  border-color: #fff;
}
.navbar-toggler {
  border: none;
  font-size: 1.2rem;
  color: var(--primary);
}
.navbar-toggler:focus {
  box-shadow: none;
  outline: 2px solid var(--accent);
}

/* Hero */
.hero-section {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 100px 0 80px;
  color: #fff;
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, .92) 0%, rgba(15, 23, 42, .75) 50%, rgba(15, 23, 42, .4) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-block;
  background: var(--accent-glow);
  border: 1px solid rgba(212, 165, 116, .5);
  color: #f0c8a6;
  font-size: .8rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 40px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-title .highlight {
  color: var(--accent);
}
.hero-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, .8);
  max-width: 540px;
  margin-bottom: 30px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.hero-stat .num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
}
.hero-stat .label {
  display: block;
  font-size: .8rem;
  color: rgba(255, 255, 255, .65);
  margin-top: 4px;
}

/* 终端卡片 */
.terminal-card {
  background: rgba(30, 41, 59, .85);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, .3);
  backdrop-filter: blur(20px);
  transition: transform var(--transition), box-shadow var(--transition);
}
.terminal-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 35px 80px rgba(0, 0, 0, .4);
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, .06);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.terminal-header .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #f87171; }
.dot-yellow { background: #fbbf24; }
.dot-green { background: #34d399; }
.terminal-title {
  font-size: .78rem;
  color: rgba(255, 255, 255, .5);
  margin-left: 8px;
  letter-spacing: 1px;
  font-family: Menlo, Monaco, Consolas, monospace;
}
.terminal-body {
  padding: 28px;
}
.terminal-status {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(52, 211, 153, .1);
  border: 1px solid rgba(52, 211, 153, .25);
  color: #34d399;
  font-size: .85rem;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 10px;
  margin-bottom: 24px;
}
.terminal-status i { font-size: 14px; }
.terminal-form label {
  color: rgba(255, 255, 255, .5);
  font-size: .8rem;
  display: block;
  margin-bottom: 8px;
}
.terminal-form input {
  width: 100%;
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  color: #fff;
  padding: 12px 16px;
  font-size: .9rem;
  outline: none;
  transition: border-color var(--transition);
  margin-bottom: 18px;
}
.terminal-form input::placeholder { color: rgba(255, 255, 255, .25); }
.terminal-form input:focus { border-color: var(--accent); }
.terminal-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, .4);
  font-size: .78rem;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .08);
}

/* 通用板块 */
.section {
  padding: 90px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-badge {
  display: inline-block;
  background: rgba(212, 165, 116, .12);
  color: var(--accent-dark);
  font-size: .8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 40px;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* 特性卡片 */
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  height: 100%;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: var(--border);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(212, 165, 116, .2), rgba(30, 41, 59, .1));
  color: var(--primary);
}
.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary);
}
.feature-card p {
  color: var(--text-muted);
  font-size: .95rem;
  margin-bottom: 0;
}

/* 分类卡片 */
.category-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  display: flex;
  height: 100%;
  transition: all var(--transition);
}
.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--border);
}
.category-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
}
.category-body {
  padding: 30px;
}
.category-tag {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(212, 165, 116, .12);
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.category-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary);
}
.category-body p {
  color: var(--text-muted);
  font-size: .95rem;
  margin-bottom: 18px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .9rem;
  color: var(--primary);
  text-decoration: none;
  transition: gap var(--transition);
}
.category-link:hover {
  gap: 14px;
  color: var(--accent);
}

/* 资讯列表 */
.news-section {
  background: var(--bg-white);
}
.news-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 26px;
  height: 100%;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: var(--border);
}
.news-card .news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.news-category {
  font-size: .75rem;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(212, 165, 116, .12);
  padding: 3px 12px;
  border-radius: 30px;
}
.news-date {
  font-size: .8rem;
  color: var(--text-light);
}
.news-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}
.news-card h3 a {
  text-decoration: none;
  color: var(--primary);
  transition: color var(--transition);
}
.news-card h3 a:hover { color: var(--accent); }
.news-card p {
  color: var(--text-muted);
  font-size: .9rem;
  margin-bottom: 16px;
  flex: 1;
}
.read-more {
  font-size: .85rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.read-more:hover {
  gap: 13px;
  color: var(--accent);
}
.empty-tip {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-light);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 1rem;
}

/* 流程 */
.process-section {
  background: var(--bg-dark);
  color: #fff;
}
.process-section .section-header h2,
.process-section .section-header p {
  color: #fff;
}
.process-section .section-badge {
  background: rgba(212, 165, 116, .2);
  color: #f0c8a6;
}
.process-step {
  text-align: center;
  padding: 30px;
  position: relative;
}
.step-num {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #f0c8a6);
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 0 30px rgba(212, 165, 116, .3);
}
.process-step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.process-step p {
  color: rgba(255, 255, 255, .7);
  font-size: .9rem;
  max-width: 260px;
  margin: 0 auto;
}
.step-line {
  position: absolute;
  top: 45px;
  left: calc(50% + 40px);
  right: calc(-50% + 40px);
  height: 2px;
  background: linear-gradient(90deg, rgba(212, 165, 116, .4), transparent);
  display: none;
}
@media (min-width: 992px) {
  .step-line { display: block; }
}

/* FAQ */
.faq-section {
  background: var(--bg-light);
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--border);
}
.faq-question {
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  color: var(--primary);
  gap: 16px;
}
.faq-question i {
  color: var(--accent);
  font-size: 1rem;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  padding: 0 28px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .4s ease;
  color: var(--text-muted);
  font-size: .93rem;
  line-height: 1.8;
}
.faq-item.active .faq-answer {
  padding: 0 28px 22px;
  max-height: 500px;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 165, 116, .15) 0%, transparent 70%);
}
.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section p {
  color: rgba(255, 255, 255, .8);
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 1rem;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .7);
  padding: 50px 0 0;
  border-top: 1px solid rgba(255, 255, 255, .05);
}
.footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--primary-light));
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.footer-about {
  font-size: .9rem;
  color: rgba(255, 255, 255, .5);
  margin-bottom: 20px;
  line-height: 1.7;
}
.footer-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: rgba(255, 255, 255, .55);
  text-decoration: none;
  font-size: .9rem;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover {
  color: var(--accent);
  text-decoration: none;
}
.footer-links a i {
  font-size: .8rem;
  color: var(--accent);
  opacity: .7;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 20px 0;
  margin-top: 40px;
  text-align: center;
  font-size: .85rem;
  color: rgba(255, 255, 255, .4);
}
.footer-bottom a {
  color: rgba(255, 255, 255, .5);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* 响应式 */
@media (max-width: 991.98px) {
  .custom-navbar .container {
    flex-wrap: wrap;
  }
  .navbar-nav {
    padding-top: 15px;
  }
  .nav-actions {
    width: 100%;
    justify-content: flex-start;
    padding: 10px 0;
    flex-wrap: wrap;
  }
  .search-box {
    width: 100%;
  }
  .hero-section {
    padding: 80px 0 60px;
    min-height: auto;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .terminal-card {
    margin-top: 40px;
  }
  .section {
    padding: 60px 0;
  }
  .section-header h2 {
    font-size: 1.6rem;
  }
  .step-line { display: none; }
}
@media (max-width: 767.98px) {
  .hero-title {
    font-size: 1.8rem;
  }
  .hero-desc {
    font-size: .95rem;
  }
  .hero-stats {
    gap: 24px;
  }
  .hero-stat .num {
    font-size: 1.3rem;
  }
  .category-img {
    height: 200px;
  }
  .cta-section h2 {
    font-size: 1.6rem;
  }
  .search-box {
    width: 100%;
  }
}
@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }
  .terminal-body {
    padding: 20px;
  }
  .footer .row > div {
    margin-bottom: 30px;
  }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --accent: #0ea5a4;
            --dark-bg: #0b1420;
            --dark-bg-2: #101e2e;
            --light-bg: #f5f8fe;
            --body-bg: #ffffff;
            --text-main: #172033;
            --text-muted: #5c6b82;
            --text-light: #93a1b5;
            --border-color: #e5ebf5;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(20, 40, 80, 0.06);
            --shadow-md: 0 8px 30px rgba(20, 40, 80, 0.1);
            --shadow-lg: 0 20px 50px rgba(20, 40, 80, 0.14);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background: var(--body-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
        }

        /* ===== Navbar ===== */
        .custom-navbar {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(229, 235, 245, 0.7);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .custom-navbar.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-weight: 800;
            font-size: 1.3rem;
            letter-spacing: -0.3px;
            padding: 6px 0;
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
        }

        .custom-navbar .nav-link {
            font-weight: 600;
            color: var(--text-muted);
            padding: 8px 16px !important;
            margin: 0 2px;
            border-radius: 10px;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .custom-navbar .nav-link:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.06);
        }

        .custom-navbar .nav-link.active {
            color: var(--primary);
            background: rgba(37, 99, 235, 0.1);
            font-weight: 700;
        }

        .navbar-toggler {
            border: none;
            color: var(--text-main);
            font-size: 1.3rem;
            padding: 6px 10px;
            background: transparent;
            outline: none;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 210px;
            padding: 8px 14px 8px 38px;
            border: 1.5px solid var(--border-color);
            border-radius: 12px;
            font-size: 0.9rem;
            background: #f8faff;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .search-box input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }

        .search-box i {
            position: absolute;
            left: 14px;
            color: var(--text-light);
            font-size: 0.85rem;
            pointer-events: none;
        }

        .btn-main {
            background: var(--primary);
            color: #fff !important;
            border: none;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 22px;
            border-radius: 12px;
            letter-spacing: 0.2px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
        }

        .btn-main:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(37, 99, 235, 0.32);
        }

        .btn-main:active {
            transform: translateY(0);
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #0b1420 0%, #101e2e 60%, #142b3d 100%);
            padding: 90px 0 80px;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: var(--primary);
            filter: blur(120px);
            opacity: 0.25;
        }

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

        .category-hero .badge-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #9fc0ff;
            padding: 8px 16px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            line-height: 1.25;
            margin-bottom: 18px;
        }

        .category-hero p.lead-text {
            color: rgba(255, 255, 255, 0.78);
            font-size: 1.1rem;
            max-width: 640px;
            margin-bottom: 32px;
        }

        .hero-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .hero-tags .tag-item {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 0.82rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-tags .tag-item i {
            color: #7fb2ff;
            font-size: 0.7rem;
        }

        .hero-stats {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 10px;
        }

        .hero-stats .stat-item {
            padding-right: 28px;
            border-right: 1px solid rgba(255, 255, 255, 0.12);
        }

        .hero-stats .stat-item:last-child {
            border-right: none;
        }

        .hero-stats .stat-num {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stats .stat-label {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.82rem;
        }

        /* ===== Breadcrumb ===== */
        .page-breadcrumb {
            background: #f8faff;
            border-bottom: 1px solid var(--border-color);
            padding: 14px 0;
            font-size: 0.88rem;
        }

        .page-breadcrumb a {
            color: var(--text-muted);
        }

        .page-breadcrumb a:hover {
            color: var(--primary);
        }

        .page-breadcrumb .breadcrumb-icon {
            margin: 0 10px;
            color: #c3ccdd;
            font-size: 0.7rem;
        }

        .page-breadcrumb span {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Section ===== */
        .section-main {
            padding: 80px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 620px;
            margin-bottom: 40px;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .section-more:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== Article Card ===== */
        .article-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .article-card .card-img-wrap {
            overflow: hidden;
            position: relative;
            aspect-ratio: 16/10;
        }

        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .article-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .article-card .card-img-wrap .img-overlay {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--text-main);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 100px;
            backdrop-filter: blur(6px);
        }

        .article-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-meta {
            display: flex;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .article-card .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .article-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .article-card h3 a {
            color: inherit;
        }

        .article-card h3 a:hover {
            color: var(--primary);
        }

        .article-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .article-card .card-link {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .article-card .card-link:hover {
            gap: 11px;
            color: var(--primary-dark);
        }

        /* ===== Guide Steps ===== */
        .steps-section {
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .steps-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: var(--primary);
            border-radius: 50%;
            filter: blur(160px);
            opacity: 0.18;
        }

        .steps-section .section-title {
            color: #fff;
        }

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

        .steps-section .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: #9fc0ff;
        }

        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.16);
            transform: translateY(-4px);
        }

        .step-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.14);
            line-height: 1;
            margin-bottom: 18px;
            font-family: "Inter", monospace;
        }

        .step-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
        }

        .step-card h3 {
            color: #fff;
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-card p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Entry Cards ===== */
        .entry-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .entry-card:hover::before {
            opacity: 1;
        }

        .entry-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 18px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
        }

        .entry-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .entry-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
            flex: 1;
            margin-bottom: 18px;
        }

        .entry-card .btn-outline-main {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1.5px solid var(--border-color);
            color: var(--text-main);
            font-weight: 600;
            font-size: 0.88rem;
            padding: 8px 18px;
            border-radius: 10px;
            transition: var(--transition);
            align-self: flex-start;
        }

        .entry-card .btn-outline-main:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(37, 99, 235, 0.04);
            gap: 10px;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 22px 26px;
            margin-bottom: 14px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 0;
        }

        .faq-item h4 i {
            font-size: 0.85rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.open h4 i {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            margin-top: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            display: none;
        }

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

        /* ===== CTA Band ===== */
        .cta-band {
            background: linear-gradient(135deg, #0b1420, #142b3d);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: var(--primary);
            filter: blur(70px);
            opacity: 0.35;
        }

        .cta-band::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: var(--accent);
            filter: blur(80px);
            opacity: 0.2;
        }

        .cta-band h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-band p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-band .btn-white-solid {
            background: #fff;
            color: var(--text-main);
            font-weight: 700;
            padding: 12px 32px;
            border-radius: 12px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
            position: relative;
            z-index: 1;
        }

        .cta-band .btn-white-solid:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(255, 255, 255, 0.3);
        }

        .cta-band .btn-ghost-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 12px;
            transition: var(--transition);
            position: relative;
            z-index: 1;
            margin-left: 10px;
        }

        .cta-band .btn-ghost-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-about {
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 18px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
        }

        .footer-links li a i {
            font-size: 0.6rem;
            margin-right: 4px;
            color: var(--primary-light);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            margin-top: 34px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.2rem;
            }

            .category-hero {
                padding: 70px 0 60px;
            }

            .section-main {
                padding: 60px 0;
            }

            .steps-section {
                padding: 60px 0;
            }

            .search-box input {
                width: 160px;
            }

            .nav-actions .btn-main {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            .custom-navbar .navbar-collapse {
                padding: 18px 0;
            }

            .custom-navbar .nav-link {
                padding: 10px 12px !important;
            }

            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                margin-top: 12px;
                gap: 12px;
            }

            .search-box input {
                width: 100%;
            }

            .category-hero {
                padding: 56px 0 50px;
            }

            .category-hero h1 {
                font-size: 1.8rem;
            }

            .category-hero p.lead-text {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 18px;
            }

            .hero-stats .stat-num {
                font-size: 1.3rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .cta-band {
                padding: 44px 26px;
            }

            .cta-band h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }

            .category-hero .badge-custom {
                font-size: 0.75rem;
                padding: 6px 12px;
            }

            .hero-tags .tag-item {
                font-size: 0.75rem;
                padding: 4px 12px;
            }

            .hero-stats {
                gap: 14px;
            }

            .hero-stats .stat-item {
                padding-right: 14px;
            }

            .hero-stats .stat-label {
                font-size: 0.7rem;
            }

            .section-main {
                padding: 48px 0;
            }

            .steps-section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .article-card .card-body {
                padding: 18px;
            }

            .cta-band {
                padding: 34px 20px;
                border-radius: 16px;
            }

            .cta-band h2 {
                font-size: 1.3rem;
            }

            .cta-band p {
                font-size: 0.9rem;
            }

            .cta-band .btn-ghost-light {
                margin-left: 0;
                margin-top: 10px;
            }

            .footer {
                padding: 44px 0 20px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --accent: #06b6d4;
  --accent-light: #ecfeff;
  --dark-bg: #0b1120;
  --dark-bg-2: #111a2e;
  --dark-card: rgba(255, 255, 255, 0.05);
  --dark-border: rgba(255, 255, 255, 0.1);
  --body-bg: #f4f7fc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(30, 60, 114, 0.08);
  --shadow-md: 0 8px 30px rgba(30, 60, 114, 0.12);
  --shadow-lg: 0 16px 48px rgba(30, 60, 114, 0.16);
  --space-lg: 80px;
  --space-md: 56px;
  --space-sm: 32px;
}
*, *::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", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--body-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.25s ease; }
ul, ol { list-style: none; }
input, button, textarea { font-family: inherit; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; margin: 0 auto; }
.text-weak { color: var(--text-weak); }

/* Custom Navbar */
.custom-navbar {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1030;
  box-shadow: 0 2px 20px rgba(15, 40, 80, 0.06);
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.brand-logo .logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  flex-shrink: 0;
}
.brand-logo span:last-child { font-size: 1.2rem; }
.navbar .nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: #475569;
  padding: 8px 18px !important;
  border-radius: 8px;
  position: relative;
  transition: background 0.25s ease, color 0.25s ease;
}
.navbar .nav-link:hover { color: var(--primary); background: rgba(37, 99, 235, 0.06); }
.navbar .nav-link.active { color: var(--primary); background: rgba(37, 99, 235, 0.1); font-weight: 700; }
.navbar .nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.search-box {
  position: relative;
  margin-right: 14px;
}
.search-box input {
  border: 1.5px solid var(--border);
  border-radius: 24px;
  padding: 8px 18px 8px 38px;
  font-size: 0.9rem;
  background: #f8fafc;
  width: 200px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  outline: none;
}
.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
  background: #fff;
}
.search-box i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-weak);
  font-size: 0.85rem;
  pointer-events: none;
}
.nav-actions { display: flex; align-items: center; gap: 8px; }
.btn-main {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  padding: 10px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 24px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}
.btn-main:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4); color: #fff; background: linear-gradient(135deg, #1d4ed8, #1e40af); }
.btn-main:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3); }
.navbar-toggler { border: none; background: transparent; color: var(--text); font-size: 1.4rem; box-shadow: none !important; outline: none !important; }
.navbar-toggler:focus { box-shadow: none; }

/* Page Hero */
.category-hero {
  background: linear-gradient(135deg, #0b1120 0%, #16233f 55%, #0f3a4d 100%);
  position: relative;
  overflow: hidden;
  padding: 64px 0 56px;
  color: #fff;
}
.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  z-index: 0;
}
.category-hero::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.35) 0%, transparent 70%);
  z-index: 1;
}
.category-hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  padding: 6px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
  margin-bottom: 18px;
  color: #e0f2fe;
}
.category-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.category-hero h1 .gradient-text {
  background: linear-gradient(90deg, #7dd3fc, #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.category-hero .lead {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 620px;
  margin-bottom: 24px;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
  margin-top: 8px;
}
.hero-stats .stat-item { display: flex; flex-direction: column; }
.hero-stats .stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-stats .stat-value span { color: #22d3ee; }
.hero-stats .stat-label { font-size: 0.82rem; color: rgba(255, 255, 255, 0.65); margin-top: 2px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.btn-light-icon {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 10px 22px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 24px;
  transition: background 0.25s ease, transform 0.25s ease;
  backdrop-filter: blur(6px);
}
.btn-light-icon:hover { background: rgba(255, 255, 255, 0.2); color: #fff; transform: translateY(-2px); }

/* Breadcrumb */
.breadcrumb-wrap {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  font-size: 0.85rem;
}
.breadcrumb-wrap .container { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.breadcrumb-wrap a { color: var(--text-weak); font-weight: 500; }
.breadcrumb-wrap a:hover { color: var(--primary); }
.breadcrumb-wrap i { font-size: 0.7rem; color: #cbd5e1; margin: 0 6px; }
.breadcrumb-wrap .current { color: var(--text); font-weight: 600; }

/* Section General */
.section-pad { padding: 72px 0; }
.section-dark {
  background: linear-gradient(180deg, #0b1120, #111a2e);
  color: #fff;
}
.section-title-wrap { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-title-wrap .section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(37, 99, 235, 0.08);
  border-radius: 20px;
  padding: 5px 16px;
  margin-bottom: 12px;
}
.section-title-wrap h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.4px;
  line-height: 1.3;
}
.section-title-wrap p { color: var(--text-weak); font-size: 1rem; }
.section-title-wrap.light h2 { color: #fff; }
.section-title-wrap.light p { color: rgba(255, 255, 255, 0.7); }
.section-title-wrap.light .section-tag { color: #7dd3fc; background: rgba(125, 211, 252, 0.12); }

/* Security Cards */
.security-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 992px) { .security-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .security-grid { grid-template-columns: 1fr; } }
.security-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  height: 100%;
}
.security-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, 0.3); }
.security-card .card-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(6, 182, 212, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 18px;
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, 0.1);
}
.security-card .card-icon.green { color: #059669; background: linear-gradient(135deg, rgba(5, 150, 105, 0.08), rgba(16, 185, 129, 0.08)); border-color: rgba(5, 150, 105, 0.1); }
.security-card .card-icon.cyan { color: #0891b2; background: linear-gradient(135deg, rgba(8, 145, 178, 0.08), rgba(6, 182, 212, 0.08)); border-color: rgba(8, 145, 178, 0.1); }
.security-card .card-icon.purple { color: #7c3aed; background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(139, 92, 246, 0.08)); border-color: rgba(124, 58, 237, 0.1); }
.security-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.security-card p { font-size: 0.9rem; color: var(--text-weak); line-height: 1.65; margin-bottom: 0; }

/* Two-column feature */
.feature-block-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 768px) { .feature-block-grid { grid-template-columns: 1fr; gap: 28px; } }
.feature-block-grid .feature-media {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.feature-block-grid .feature-media img { width: 100%; object-fit: cover; min-height: 280px; }
.feature-media { position: relative; }
.feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11, 17, 32, 0.5));
  pointer-events: none;
}
.feature-content h2 { font-size: 1.6rem; font-weight: 800; margin-bottom: 14px; line-height: 1.3; }
.feature-content p { color: rgba(255, 255, 255, 0.75); margin-bottom: 18px; }
.feature-content .feature-list { margin-bottom: 24px; }
.feature-content .feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
}
.feature-content .feature-list li i {
  color: #22d3ee;
  margin-top: 5px;
  font-size: 0.75rem;
}

/* Process Timeline */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: steps; }
@media (max-width: 992px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) { .process-grid { grid-template-columns: 1fr; } }
.process-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.process-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process-item .step-num {
  counter-increment: steps;
  position: absolute;
  top: -16px;
  right: -8px;
  font-size: 4.2rem;
  font-weight: 800;
  color: rgba(37, 99, 235, 0.08);
  line-height: 1;
  pointer-events: none;
  z-index: 0;
}
.process-item > * { position: relative; z-index: 1; }
.process-item .step-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.process-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.process-item p { font-size: 0.85rem; color: var(--text-weak); line-height: 1.6; margin-bottom: 0; }

/* Data/Stats Band */
.stats-band {
  background: linear-gradient(135deg, #0b1120 0%, #16233f 100%);
  border-radius: 24px;
  padding: 42px 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.stats-band::before {
  content: "";
  position: absolute;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  inset: 0;
  opacity: 0.16;
}
.stats-band .row { position: relative; z-index: 1; }
.stats-band .stat-cell { text-align: center; padding: 12px 8px; }
.stats-band .stat-cell .stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  background: linear-gradient(90deg, #7dd3fc, #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stats-band .stat-cell .stat-label { font-size: 0.85rem; color: rgba(255, 255, 255, 0.7); margin-top: 6px; }

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, 0.2); }
.faq-item .faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  margin: 0;
  user-select: none;
  transition: color 0.25s ease;
}
.faq-item .faq-q:hover { color: var(--primary); }
.faq-item .faq-q i { font-size: 0.85rem; color: var(--text-weak); transition: transform 0.3s ease; }
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--primary); }
.faq-item .faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease, opacity 0.3s ease;
  opacity: 0;
  font-size: 0.92rem;
  color: var(--text-weak);
  line-height: 1.7;
}
.faq-item.open .faq-a { max-height: 300px; opacity: 1; padding-bottom: 22px; }
.faq-item.open { border-color: rgba(37, 99, 235, 0.25); }

/* CTA */
.cta-band {
  background: linear-gradient(135deg, #1e40af, #2563eb 50%, #06b6d4);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(37, 99, 235, 0.25);
}
.cta-band::before {
  content: "";
  position: absolute;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  inset: 0;
  opacity: 0.08;
}
.cta-band .cta-content { position: relative; z-index: 1; }
.cta-band h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-band p { color: rgba(255, 255, 255, 0.85); font-size: 1rem; max-width: 560px; margin: 0 auto 28px; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.btn-white {
  background: #fff;
  color: var(--primary);
  border: none;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2); color: var(--primary); }
.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
  padding: 10px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s ease;
}
.btn-outline-white:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; color: #fff; transform: translateY(-2px); }

/* Footer */
.footer {
  background: #0b1120;
  color: rgba(255, 255, 255, 0.8);
  padding-top: 60px;
  padding-bottom: 24px;
}
.footer .row { margin-bottom: 24px; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-about { font-size: 0.9rem; color: rgba(255, 255, 255, 0.55); margin-bottom: 18px; line-height: 1.7; }
.footer-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}
.footer-links li { margin-bottom: 8px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.25s ease, transform 0.25s ease;
}
.footer-links a:hover { color: #7dd3fc; transform: translateX(3px); }
.footer-links a i { font-size: 0.65rem; color: rgba(255, 255, 255, 0.35); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.7); }
.footer-bottom a:hover { color: #7dd3fc; }

/* Related cards */
.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.related-card .related-media { height: 200px; overflow: hidden; position: relative; }
.related-card .related-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-media img { transform: scale(1.05); }
.related-card .related-body { padding: 22px; }
.related-card .related-body h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.related-card .related-body h4 a { color: var(--text); }
.related-card .related-body h4 a:hover { color: var(--primary); }
.related-card .related-body p { font-size: 0.85rem; color: var(--text-weak); margin-bottom: 12px; line-height: 1.6; }
.related-card .related-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-weak); }
.related-card .related-meta a { color: var(--primary); font-weight: 600; }

/* Media Queries */
@media (max-width: 768px) {
  .section-pad { padding: 52px 0; }
  .category-hero { padding: 48px 0 40px; }
  .stats-band { padding: 32px 24px; border-radius: 18px; }
  .stats-band .stat-cell .stat-value { font-size: 1.5rem; }
  .cta-band { padding: 40px 24px; border-radius: 18px; }
  .hero-actions .btn { flex: 1; min-width: 140px; }
  .search-box input { width: 140px; }
}
@media (max-width: 576px) {
  .category-hero h1 { font-size: 1.6rem; }
  .category-hero .lead { font-size: 0.92rem; }
  .hero-stats { gap: 16px; }
  .hero-stats .stat-value { font-size: 1.2rem; }
  .custom-navbar { padding: 10px 0; }
  .brand-logo { font-size: 0.95rem; }
  .brand-logo .logo-icon { width: 36px; height: 36px; font-size: 0.85rem; }
  .brand-logo span:last-child { font-size: 1.05rem; }
  .nav-actions { flex-direction: column; width: 100%; padding: 12px 0; }
  .search-box { width: 100%; margin-right: 0; margin-bottom: 10px; }
  .search-box input { width: 100%; }
  .nav-actions .btn-main { width: 100%; text-align: center; }
}

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #e0ecff;
            --accent: #06b6d4;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --body-bg: #f6f9fc;
            --card-bg: #ffffff;
            --text: #16233a;
            --text-muted: #5f6c80;
            --border: #e2e9f2;
            --radius-lg: 20px;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15,23,42,.05);
            --shadow: 0 12px 32px rgba(15,23,42,.08);
            --shadow-lg: 0 20px 48px rgba(37,99,235,.16);
            --transition: .25s ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
        }
        :focus-visible {
            outline: 3px solid rgba(37,99,235,.35);
            outline-offset: 2px;
        }
        .custom-navbar {
            background: rgba(255,255,255,.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226,233,242,.7);
            min-height: 76px;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1080;
            box-shadow: 0 4px 24px rgba(15,23,42,.05);
        }
        .custom-navbar .container {
            min-height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: .65rem;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--dark);
            letter-spacing: .2px;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 13px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            box-shadow: 0 8px 18px rgba(37,99,235,.28);
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: .15rem;
        }
        .nav-link {
            font-weight: 600;
            font-size: .95rem;
            color: var(--text);
            padding: .55rem 1rem;
            border-radius: 10px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .navbar-toggler {
            border: 0;
            box-shadow: none;
            padding: .4rem .6rem;
        }
        .navbar-toggler i {
            font-size: 1.25rem;
            color: var(--text);
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: .8rem;
        }
        .search-box {
            position: relative;
        }
        .search-box i {
            position: absolute;
            left: .85rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: .85rem;
            pointer-events: none;
        }
        .search-box input {
            background: #f1f5f9;
            border: 1px solid transparent;
            border-radius: 12px;
            padding: .5rem .95rem .5rem 2.35rem;
            font-size: .9rem;
            min-width: 180px;
            width: 180px;
            transition: var(--transition);
        }
        .search-box input:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37,99,235,.12);
            outline: none;
            width: 220px;
        }
        .btn-main {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 700;
            font-size: .95rem;
            border-radius: 12px;
            padding: .58rem 1.35rem;
            border: 0;
            box-shadow: 0 6px 16px rgba(37,99,235,.22);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            white-space: nowrap;
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(37,99,235,.32);
            color: #fff;
        }
        .btn-main:active {
            transform: translateY(0);
        }
        .btn-outline-main {
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 700;
            border-radius: 12px;
            padding: .55rem 1.3rem;
            background: transparent;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            white-space: nowrap;
        }
        .btn-outline-main:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(37,99,235,.2);
        }
        .page-banner {
            position: relative;
            padding: 110px 0 80px;
            background-size: cover;
            background-position: center;
        }
        .page-banner:before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(125deg, rgba(2,8,23,.88) 0%, rgba(15,23,42,.72) 45%, rgba(37,99,235,.55) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            background: transparent;
            margin-bottom: 24px;
            justify-content: center;
        }
        .breadcrumb-item a,
        .breadcrumb-item {
            color: rgba(255,255,255,.75);
            font-size: .92rem;
        }
        .breadcrumb-item.active {
            color: rgba(255,255,255,.9);
        }
        .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255,255,255,.45);
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: rgba(255,255,255,.15);
            border: 1px solid rgba(255,255,255,.25);
            color: #fff;
            font-size: .82rem;
            font-weight: 600;
            padding: .35rem .9rem;
            border-radius: 100px;
            margin-bottom: 16px;
            backdrop-filter: blur(6px);
        }
        .page-banner-title {
            color: #fff;
            font-weight: 800;
            font-size: 2.4rem;
            line-height: 1.35;
            letter-spacing: .3px;
            max-width: 860px;
            margin: 0 auto;
        }
        .banner-date {
            color: rgba(255,255,255,.85);
            margin-top: 12px;
            font-size: .95rem;
        }
        .article-section {
            padding: 70px 0 80px;
            background: #fff;
        }
        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 2.25rem;
        }
        .article-hero-image {
            overflow: hidden;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .article-hero-image img {
            width: 100%;
            transition: transform .6s ease;
        }
        .article-hero-image:hover img {
            transform: scale(1.02);
        }
        .article-content {
            font-size: 1.06rem;
            line-height: 1.95;
            color: #2b3a52;
        }
        .article-content p {
            margin-bottom: 1.3rem;
        }
        .article-content h2,
        .article-content h3 {
            font-weight: 800;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        .article-content h2 {
            font-size: 1.45rem;
        }
        .article-content h3 {
            font-size: 1.2rem;
        }
        .article-content img {
            border-radius: 14px;
            margin: 1.4rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content ul,
        .article-content ol {
            padding-left: 1.5rem;
            margin-bottom: 1.3rem;
        }
        .article-content li {
            margin-bottom: .6rem;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            color: var(--text);
            padding: 1.2rem 1.4rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: .7rem 1rem;
        }
        .article-content pre {
            background: var(--dark);
            color: #e2e8f0;
            padding: 1.2rem;
            border-radius: 12px;
            overflow-x: auto;
            line-height: 1.7;
        }
        .article-tags {
            border-top: 1px solid var(--border);
            padding-top: 1.2rem;
        }
        .tag-label {
            font-size: .85rem;
            font-weight: 700;
            color: var(--text-muted);
        }
        .badge-soft {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
            font-size: .82rem;
            padding: .4rem .8rem;
            border-radius: 8px;
            line-height: 1;
        }
        .article-footer {
            margin-top: 2rem;
            padding-top: 1rem;
        }
        .empty-icon {
            width: 82px;
            height: 82px;
            margin: 0 auto;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
        }
        .sidebar-sticky {
            position: sticky;
            top: 96px;
        }
        .info-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            margin-bottom: 1.4rem;
        }
        .cta-card {
            background: linear-gradient(150deg, #0f172a, #1e3a8a 80%);
            color: #fff;
            border: 0;
        }
        .cta-card .sidebar-title {
            color: #fff;
        }
        .cta-card .text-muted {
            color: rgba(255,255,255,.72);
        }
        .sidebar-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: rgba(255,255,255,.15);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .sidebar-title {
            font-size: 1.12rem;
            font-weight: 800;
            margin-bottom: .75rem;
            color: var(--dark);
        }
        .info-card .text-muted {
            font-size: .92rem;
            line-height: 1.8;
        }
        .check-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .check-list li {
            position: relative;
            padding: .5rem 0 .5rem 1.9rem;
            color: var(--text-muted);
            font-size: .92rem;
            border-bottom: 1px dashed var(--border);
        }
        .check-list li:last-child {
            border-bottom: 0;
        }
        .check-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: .5rem;
            color: #10b981;
        }
        .related-section {
            padding: 75px 0;
            background: var(--body-bg);
            border-top: 1px solid var(--border);
        }
        .section-head {
            max-width: 680px;
            margin: 0 auto 45px;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: .8rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-light);
            padding: .35rem 1rem;
            border-radius: 100px;
            margin-bottom: .9rem;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: .6rem;
        }
        .section-sub {
            font-size: 1rem;
            color: var(--text-muted);
        }
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all .35s ease;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-thumb {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .related-thumb img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.06);
        }
        .related-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(2,8,23,.4), transparent 60%);
        }
        .related-body {
            padding: 1.5rem;
        }
        .related-body .badge-soft {
            margin-bottom: .8rem;
        }
        .related-body h3 {
            font-weight: 700;
            margin-bottom: .5rem;
            font-size: 1.12rem;
        }
        .related-body p {
            font-size: .92rem;
            margin-bottom: 1rem;
            color: var(--text-muted);
        }
        .card-link {
            font-weight: 700;
            color: var(--primary);
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }
        .card-link i {
            transition: transform .25s ease;
        }
        .card-link:hover {
            color: var(--primary-dark);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }
        .faq-section {
            padding: 70px 0;
            background: #fff;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.4rem 1.6rem;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: .7rem;
            margin: 0;
        }
        .faq-item h3 i {
            color: var(--primary);
        }
        .faq-item p {
            margin: .8rem 0 0;
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.85;
        }
        .cta-band {
            position: relative;
            padding: 68px 0;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0891b2 100%);
            color: #fff;
            overflow: hidden;
        }
        .cta-band::before {
            content: "";
            position: absolute;
            width: 460px;
            height: 460px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255,255,255,.06), transparent 70%);
            top: -190px;
            right: -120px;
        }
        .cta-tag {
            display: inline-block;
            background: rgba(255,255,255,.14);
            border: 1px solid rgba(255,255,255,.2);
            padding: .3rem 1rem;
            border-radius: 100px;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .5px;
            margin-bottom: 1rem;
        }
        .cta-title {
            font-size: 1.9rem;
            font-weight: 800;
        }
        .cta-text {
            font-size: 1rem;
            line-height: 1.9;
            opacity: .9;
            max-width: 740px;
        }
        .btn-light-cta {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            padding: .6rem 1.4rem;
            border-radius: 12px;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            transition: var(--transition);
            border: 0;
        }
        .btn-light-cta:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(2,8,23,.25);
        }
        .btn-ghost-light {
            border: 2px solid rgba(255,255,255,.6);
            color: #fff;
            font-weight: 700;
            padding: .5rem 1.3rem;
            border-radius: 12px;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            transition: var(--transition);
            background: transparent;
        }
        .btn-ghost-light:hover {
            border-color: #fff;
            background: rgba(255,255,255,.12);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer {
            background: #0b1220;
            color: #94a3b8;
            padding: 70px 0 0;
            position: relative;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: .7rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-about {
            font-size: .93rem;
            line-height: 1.95;
            color: #94a3b8;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: .6rem;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: .95rem;
            text-decoration: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: .45rem;
        }
        .footer-links a i {
            font-size: .7rem;
            color: var(--accent);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.08);
            padding: 24px 0;
            margin-top: 42px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .75rem;
            font-size: .9rem;
            color: #94a3b8;
        }
        .footer-bottom a {
            color: #e2e8f0;
        }
        @media (max-width: 991.98px) {
            .custom-navbar {
                min-height: auto;
            }
            .custom-navbar .container {
                min-height: 64px;
            }
            .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 1rem;
                margin-top: .5rem;
                box-shadow: var(--shadow);
                border: 1px solid var(--border);
            }
            .navbar-nav {
                text-align: center;
            }
            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                padding-top: .5rem;
            }
            .search-box {
                width: 100%;
            }
            .search-box input,
            .search-box input:focus {
                width: 100%;
                min-width: 0;
            }
            .nav-actions .btn-main {
                justify-content: center;
                width: 100%;
            }
            .page-banner {
                padding: 90px 0 58px;
            }
            .page-banner-title {
                font-size: 1.9rem;
            }
            .article-card {
                padding: 1.5rem;
            }
            .sidebar-sticky {
                position: static;
            }
        }
        @media (max-width: 767px) {
            .page-banner {
                padding: 70px 0 44px;
            }
            .page-banner-title {
                font-size: 1.5rem;
            }
            .article-section {
                padding: 50px 0;
            }
            .article-card {
                padding: 1.2rem;
                border-radius: 16px;
            }
            .article-content {
                font-size: 1rem;
                line-height: 1.85;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-band {
                padding: 50px 0;
                text-align: center;
            }
            .cta-band::before {
                display: none;
            }
            .cta-band .text-lg-end {
                text-align: center !important;
            }
            .footer {
                padding-top: 50px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1.05rem;
            }
            .article-footer .btn {
                width: 100%;
                justify-content: center;
            }
            .related-thumb {
                height: 180px;
            }
        }