/* roulang page: index */
:root {
  --primary: #1e40af;
  --primary-dark: #172f7d;
  --primary-light: #3b5bdb;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --dark-bg: #0b1526;
  --dark-soft: #131f35;
  --bg: #f4f6fb;
  --bg-white: #ffffff;
  --text: #1a2233;
  --text-light: #5a6577;
  --text-muted: #8b94a7;
  --border: #e2e8f0;
  --border-light: #edf1f7;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: 0.25s ease;
  --container: 1200px;
  --space-section: 88px;
}
*, *::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, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif; line-height: 1.65; color: var(--text); background: var(--bg); font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font: inherit; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section-alt { background: var(--bg-white); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-eyebrow { display: inline-block; background: rgba(30, 64, 175, 0.08); color: var(--primary); font-size: 13px; font-weight: 700; letter-spacing: 1px; padding: 6px 16px; border-radius: 30px; margin-bottom: 14px; }
.section-title { font-size: 34px; font-weight: 800; line-height: 1.3; color: var(--text); letter-spacing: -0.02em; }
.section-title span { color: var(--primary); }
.section-subtitle { font-size: 16px; color: var(--text-light); margin-top: 14px; line-height: 1.7; }
.section-foot { text-align: center; margin-top: 48px; }

/* Header */
.site-header { background: var(--bg-white); border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--text); white-space: nowrap; }
.logo-icon { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); color: #fff; border-radius: 12px; font-size: 14px; font-weight: 800; letter-spacing: 0.5px; box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3); }
.nav-menu { display: flex; align-items: center; gap: 28px; }
.nav-link { font-size: 15px; font-weight: 500; color: var(--text-light); position: relative; padding: 6px 2px; white-space: nowrap; }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: width var(--transition); }
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-search { display: flex; align-items: center; background: var(--bg); border: 1px solid var(--border); border-radius: 30px; padding: 6px 14px; transition: border-color var(--transition), box-shadow var(--transition); }
.nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.12); background: #fff; }
.nav-search input { border: none; background: transparent; outline: none; width: 110px; font-size: 13px; color: var(--text); }
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search .fa-magnifying-glass { color: var(--text-muted); font-size: 13px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 14px; font-weight: 600; padding: 10px 20px; border-radius: 30px; transition: all var(--transition); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30, 64, 175, 0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(30, 64, 175, 0.04); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35); }
.btn-lg { font-size: 16px; padding: 14px 32px; }
.nav-toggle { display: none; font-size: 22px; color: var(--text); padding: 6px; }

/* Hero */
.hero { position: relative; padding: 110px 0 120px; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11, 21, 38, 0.85) 0%, rgba(11, 21, 38, 0.55) 60%, rgba(11, 21, 38, 0.35) 100%); }
.hero-overlay { position: absolute; inset: 0; background: radial-gradient(ellipse at 70% 50%, rgba(30, 64, 175, 0.25) 0%, transparent 70%); }
.hero-content { position: relative; z-index: 2; max-width: 760px; color: #fff; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.2); backdrop-filter: blur(10px); padding: 7px 18px; border-radius: 30px; font-size: 13px; font-weight: 500; margin-bottom: 24px; color: rgba(255, 255, 255, 0.9); }
.hero h1 { font-size: 50px; font-weight: 900; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 18px; }
.hero h1 .highlight { color: var(--accent); }
.hero-desc { font-size: 17px; line-height: 1.75; color: rgba(255, 255, 255, 0.82); margin-bottom: 32px; max-width: 580px; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.hero-feats { display: flex; flex-wrap: wrap; gap: 20px 28px; }
.hero-feats span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.75); }
.hero-feats .fa-circle-check { color: var(--accent); font-size: 15px; }

/* Feature Section */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card { background: var(--bg-white); border-radius: var(--radius); padding: 36px 30px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: transform var(--transition), box-shadow var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%); border-radius: 14px; color: #fff; font-size: 22px; margin-bottom: 20px; box-shadow: 0 6px 16px rgba(30, 64, 175, 0.28); }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* Category Section */
.category-section { background: var(--bg-white); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: transform var(--transition), box-shadow var(--transition); }
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.category-card-img { position: relative; height: 190px; overflow: hidden; }
.category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .category-card-img img { transform: scale(1.06); }
.category-card-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(11, 21, 38, 0.25) 0%, transparent 60%); }
.category-card-tag { position: absolute; top: 16px; left: 16px; z-index: 2; background: rgba(255, 255, 255, 0.95); color: var(--primary); font-size: 12px; font-weight: 700; padding: 5px 14px; border-radius: 20px; box-shadow: var(--shadow-sm); }
.category-card-body { padding: 26px 26px 30px; }
.category-card-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.category-card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 18px; }
.category-card-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); transition: gap var(--transition); }
.category-card-link:hover { gap: 10px; }

/* Info List Section */
.info-section { position: relative; }
.info-wrap { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: start; }
.info-list-card { background: var(--bg-white); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 32px; border: 1px solid var(--border-light); }
.info-list-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; padding-bottom: 18px; border-bottom: 1px solid var(--border-light); }
.info-list-head h3 { font-size: 22px; font-weight: 700; }
.info-list-head h3 i { color: var(--primary); margin-right: 8px; }
.info-list-head a { font-size: 14px; color: var(--primary); font-weight: 500; }
.info-list-head a:hover { text-decoration: underline; }
.info-item { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border-light); transition: background var(--transition), padding var(--transition); border-radius: 8px; }
.info-item:last-child { border-bottom: none; }
.info-item:hover { background: rgba(30, 64, 175, 0.03); padding-left: 12px; padding-right: 12px; }
.info-cat { flex-shrink: 0; background: rgba(30, 64, 175, 0.08); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 20px; }
.info-title { flex: 1; font-size: 15px; font-weight: 500; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.info-title:hover { color: var(--primary); }
.info-date { flex-shrink: 0; font-size: 13px; color: var(--text-muted); }
.empty-tip { text-align: center; color: var(--text-muted); font-size: 15px; padding: 40px 0; }
.info-visual { position: sticky; top: 100px; }
.info-visual-card { background: var(--dark-bg); border-radius: var(--radius-lg); overflow: hidden; color: #fff; position: relative; }
.info-visual-card img { width: 100%; height: 220px; object-fit: cover; opacity: 0.6; }
.info-visual-body { padding: 28px; }
.info-visual-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.info-visual-body p { font-size: 14px; color: rgba(255, 255, 255, 0.72); line-height: 1.7; margin-bottom: 20px; }
.info-visual-body .btn { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3); }
.info-visual-body .btn:hover { background: var(--accent-dark); transform: translateY(-2px); }
.info-visual-body .btn i { font-size: 13px; }

/* Stats Section */
.stats-section { background: var(--dark-bg); padding: 80px 0; position: relative; overflow: hidden; }
.stats-section::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.08; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 2; }
.stat-item { text-align: center; padding: 32px 20px; border-radius: var(--radius); transition: background var(--transition); }
.stat-item:hover { background: rgba(255, 255, 255, 0.03); }
.stat-number { font-size: 44px; font-weight: 900; color: #fff; line-height: 1.2; letter-spacing: -0.02em; }
.stat-number span { font-size: 20px; font-weight: 600; color: var(--accent); }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-top: 8px; }

/* Steps Section */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-item { position: relative; background: var(--bg-white); border-radius: var(--radius); padding: 32px 26px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); text-align: center; transition: transform var(--transition), box-shadow var(--transition); }
.step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%); color: #fff; font-size: 18px; font-weight: 800; border-radius: 50%; margin-bottom: 18px; box-shadow: 0 6px 16px rgba(245, 158, 11, 0.35); }
.step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step-item p { font-size: 13px; color: var(--text-light); line-height: 1.65; }
.step-arrow { position: absolute; top: 50%; right: -18px; transform: translateY(-50%); color: var(--border); font-size: 18px; z-index: 3; }

/* FAQ Section */
.faq-section { background: var(--bg-white); }
.faq-list { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--bg); border: 1px solid var(--border-light); border-radius: var(--radius); overflow: hidden; transition: border-color var(--transition), box-shadow var(--transition); }
.faq-item:hover { border-color: var(--primary-light); }
.faq-q { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; font-size: 16px; font-weight: 600; cursor: pointer; color: var(--text); }
.faq-q .fa-chevron-down { color: var(--text-muted); font-size: 14px; transition: transform var(--transition); }
.faq-item.open .fa-chevron-down { transform: rotate(180deg); color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a-inner { padding: 0 24px 22px; font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* CTA Section */
.cta-section { position: relative; padding: 90px 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; text-align: center; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(30, 64, 175, 0.92) 0%, rgba(11, 21, 38, 0.88) 100%); }
.cta-content { position: relative; z-index: 2; max-width: 680px; margin: 0 auto; color: #fff; }
.cta-content h2 { font-size: 36px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; letter-spacing: -0.02em; }
.cta-content p { font-size: 16px; color: rgba(255, 255, 255, 0.75); margin-bottom: 32px; line-height: 1.7; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-buttons .btn-white { background: #fff; color: var(--primary); font-weight: 700; }
.cta-buttons .btn-white:hover { background: rgba(255, 255, 255, 0.9); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15); }
.cta-buttons .btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.5); }
.cta-buttons .btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.cta-note { margin-top: 24px; font-size: 13px; color: rgba(255, 255, 255, 0.55); }

/* Footer */
.site-footer { background: var(--dark-bg); color: rgba(255, 255, 255, 0.7); padding-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.75; color: rgba(255, 255, 255, 0.55); max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: rgba(255, 255, 255, 0.55); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 24px 0; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.4); }
.footer-bottom a { color: rgba(255, 255, 255, 0.55); }
.footer-bottom a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 1024px) {
  :root { --space-section: 72px; }
  .nav-menu { gap: 20px; }
  .nav-search input { width: 80px; }
  .hero { padding: 90px 0 100px; }
  .hero h1 { font-size: 42px; }
  .category-grid { gap: 20px; }
  .category-card-body { padding: 22px 20px 24px; }
  .feature-grid { gap: 20px; }
  .steps-grid { gap: 16px; }
  .step-item { padding: 26px 18px; }
  .info-wrap { gap: 28px; }
}
@media (max-width: 768px) {
  .nav-menu { position: absolute; top: 74px; left: 0; right: 0; background: var(--bg-white); flex-direction: column; align-items: flex-start; gap: 0; padding: 16px 24px; box-shadow: var(--shadow); border-bottom: 1px solid var(--border-light); display: none; }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--border-light); font-size: 16px; }
  .nav-link::after { display: none; }
  .nav-actions { margin-left: auto; }
  .nav-actions .nav-search { display: none; }
  .nav-actions .btn-outline { display: none; }
  .nav-toggle { display: block; }
  .hero { padding: 70px 0 80px; }
  .hero h1 { font-size: 34px; }
  .hero-desc { font-size: 15px; }
  .hero-feats { gap: 14px 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .info-wrap { grid-template-columns: 1fr; }
  .info-visual { position: static; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .step-arrow { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .section-title { font-size: 28px; }
  .cta-content h2 { font-size: 30px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .logo { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; font-size: 12px; border-radius: 10px; }
  .nav-bar { height: 64px; }
  .nav-menu { top: 64px; }
  .nav-actions .btn-primary { padding: 8px 14px; font-size: 13px; }
  .hero h1 { font-size: 29px; }
  .hero-desc { font-size: 14px; margin-bottom: 24px; }
  .hero-buttons { flex-direction: column; width: 100%; }
  .hero-buttons .btn { width: 100%; }
  .section { --space-section: 56px; padding: 56px 0; }
  .section-title { font-size: 24px; }
  .section-subtitle { font-size: 14px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-number { font-size: 34px; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand p { max-width: 100%; }
  .info-list-card { padding: 22px; }
  .info-title { font-size: 14px; }
  .info-cat { display: none; }
  .info-visual-card img { height: 180px; }
  .cta-section { padding: 60px 0; }
  .cta-content h2 { font-size: 26px; }
  .cta-buttons { flex-direction: column; width: 100%; }
  .cta-buttons .btn { width: 100%; }
}

/* roulang page: category1 */
:root {
      --primary: #4F46E5;
      --primary-dark: #4338CA;
      --primary-light: #EEF2FF;
      --accent: #06B6D4;
      --accent-light: #E0F2FE;
      --bg: #F8FAFC;
      --bg-white: #FFFFFF;
      --text: #0F172A;
      --text-muted: #64748B;
      --border: #E2E8F0;
      --radius: 16px;
      --radius-sm: 10px;
      --shadow-sm: 0 2px 12px rgba(15, 23, 42, .06);
      --shadow: 0 4px 24px rgba(15, 23, 42, .08);
      --shadow-lg: 0 12px 40px rgba(15, 23, 42, .12);
      --transition: all .3s ease;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    button { font-family: inherit; cursor: pointer; }
    ul, ol { list-style: none; }
    input { font-family: inherit; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    .section-pad { padding: 80px 0; }
    .section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
    .section-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 999px; margin-bottom: 12px; }
    .section-title { font-size: 32px; font-weight: 800; line-height: 1.3; letter-spacing: -.5px; }
    .section-sub { color: var(--text-muted); font-size: 16px; margin-top: 12px; }
    .text-center { text-align: center; }

    /* ===== Header ===== */
    .site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255, 255, 255, .92); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
    .nav-bar { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
    .logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text); white-space: nowrap; }
    .logo-icon { width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 900; letter-spacing: -.5px; flex-shrink: 0; box-shadow: 0 4px 12px rgba(79, 70, 229, .3); }
    .nav-menu { display: flex; align-items: center; gap: 6px; margin: 0 10px; }
    .nav-link { padding: 10px 16px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-muted); white-space: nowrap; }
    .nav-link:hover { color: var(--primary); background: var(--primary-light); }
    .nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 700; }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .nav-search { display: flex; align-items: center; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 0 14px; height: 40px; width: 180px; transition: var(--transition); }
    .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 70, 229, .12); }
    .nav-search i { color: var(--text-muted); font-size: 14px; flex-shrink: 0; }
    .nav-search input { border: none; outline: none; background: transparent; padding: 0 8px; width: 100%; font-size: 14px; color: var(--text); }
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 22px; border-radius: 999px; font-weight: 600; font-size: 14px; border: none; transition: var(--transition); white-space: nowrap; }
    .btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
    .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
    .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(79, 70, 229, .35); }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79, 70, 229, .4); }
    .btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(6, 182, 212, .3); }
    .btn-accent:hover { background: #0891B2; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(6, 182, 212, .35); }
    .nav-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--text); padding: 8px; border-radius: 8px; }
    .nav-toggle:hover { background: var(--bg); }

    /* ===== Page Banner ===== */
    .page-banner { position: relative; background: linear-gradient(135deg, rgba(79, 70, 229, .94), rgba(6, 182, 212, .86)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: #fff; padding: 84px 0 72px; overflow: hidden; }
    .page-banner::after { content: ''; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px; background: rgba(255, 255, 255, .08); border-radius: 50%; }
    .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, .85); margin-bottom: 16px; position: relative; z-index: 1; }
    .breadcrumb a:hover { color: #fff; text-decoration: underline; }
    .breadcrumb i { font-size: 12px; opacity: .7; }
    .page-banner h1 { font-size: 40px; font-weight: 800; line-height: 1.25; letter-spacing: -1px; margin-bottom: 14px; position: relative; z-index: 1; }
    .page-banner p { font-size: 17px; color: rgba(255, 255, 255, .92); max-width: 620px; line-height: 1.8; position: relative; z-index: 1; }

    /* ===== Category Intro ===== */
    .cat-intro-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
    .cat-intro-copy h2 { font-size: 30px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; letter-spacing: -.5px; }
    .cat-intro-copy > p { color: var(--text-muted); font-size: 16px; margin-bottom: 24px; line-height: 1.9; }
    .cat-intro-list { display: grid; gap: 14px; margin-bottom: 28px; }
    .cat-intro-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--text); line-height: 1.7; }
    .cat-intro-list li i { color: var(--primary); background: var(--primary-light); width: 28px; height: 28px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; flex-shrink: 0; margin-top: 2px; }
    .cat-intro-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 8px; }
    .stat-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 12px; text-align: center; box-shadow: var(--shadow-sm); }
    .stat-card .num { font-size: 24px; font-weight: 800; color: var(--primary); line-height: 1.2; }
    .stat-card .label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
    .cat-intro-media { position: relative; }
    .cat-intro-media .main-img { border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; height: 360px; object-fit: cover; }
    .cat-intro-media .float-img { position: absolute; bottom: -20px; right: -16px; width: 42%; border-radius: var(--radius); box-shadow: var(--shadow-lg); border: 4px solid #fff; object-fit: cover; height: 160px; }

    /* ===== Entry Cards ===== */
    .entry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .entry-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; text-align: center; box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden; }
    .entry-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: var(--transition); }
    .entry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .entry-card:hover::before { opacity: 1; }
    .entry-card .icon { width: 60px; height: 60px; margin: 0 auto 18px; background: var(--primary-light); color: var(--primary); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 24px; transition: var(--transition); }
    .entry-card:hover .icon { background: var(--primary); color: #fff; transform: scale(1.05); }
    .entry-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
    .entry-card p { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin-bottom: 16px; }
    .entry-card .link-more { font-size: 14px; font-weight: 600; color: var(--primary); }
    .entry-card .link-more:hover { color: var(--primary-dark); text-decoration: underline; }

    /* ===== Guide List ===== */
    .guide-section { background: var(--bg-white); }
    .guide-list { display: grid; gap: 16px; max-width: 860px; margin: 0 auto; }
    .guide-item { display: flex; align-items: center; gap: 20px; padding: 20px 24px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); transition: var(--transition); }
    .guide-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateX(4px); background: #fff; }
    .guide-thumb { width: 88px; height: 64px; border-radius: 8px; object-fit: cover; flex-shrink: 0; background: var(--primary-light); }
    .guide-info { flex: 1; min-width: 0; }
    .guide-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; line-height: 1.4; }
    .guide-info h3 a:hover { color: var(--primary); }
    .guide-meta { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--text-muted); }
    .guide-meta span { display: inline-flex; align-items: center; gap: 5px; }
    .guide-tag { background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }

    /* ===== Flow Steps ===== */
    .flow-section { background: linear-gradient(180deg, var(--bg) 0%, var(--primary-light) 100%); }
    .flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
    .flow-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; position: relative; box-shadow: var(--shadow-sm); transition: var(--transition); }
    .flow-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .flow-card .step-num { width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px; margin-bottom: 16px; box-shadow: 0 4px 12px rgba(79, 70, 229, .3); }
    .flow-card h3 { font-size: 17px; margin-bottom: 8px; font-weight: 700; }
    .flow-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
    .flow-arrow { position: absolute; right: -20px; top: 50%; transform: translateY(-50%); color: var(--primary); font-size: 18px; opacity: .4; z-index: 2; }
    .flow-card:last-child .flow-arrow { display: none; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 780px; margin: 0 auto; display: grid; gap: 14px; }
    .faq-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius-sm); transition: var(--transition); overflow: hidden; }
    .faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
    .faq-item summary { padding: 18px 24px; cursor: pointer; font-weight: 600; font-size: 15px; display: flex; align-items: center; gap: 12px; list-style: none; transition: var(--transition); }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::before { content: '\f059'; font-family: 'Font Awesome 6 Free'; font-weight: 400; color: var(--primary); font-size: 18px; flex-shrink: 0; }
    .faq-item summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; margin-left: auto; color: var(--text-muted); font-size: 13px; transition: var(--transition); }
    .faq-item[open] summary::after { transform: rotate(180deg); }
    .faq-item .faq-answer { padding: 0 24px 20px 54px; font-size: 15px; color: var(--text-muted); line-height: 1.75; }

    /* ===== CTA ===== */
    .cta-section { position: relative; background: linear-gradient(135deg, rgba(79, 70, 229, .95), rgba(6, 182, 212, .9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat; padding: 70px 0; text-align: center; color: #fff; }
    .cta-section h2 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
    .cta-section p { font-size: 16px; color: rgba(255, 255, 255, .9); margin-bottom: 28px; }
    .cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
    .cta-section .btn-light { background: #fff; color: var(--primary); font-weight: 700; }
    .cta-section .btn-light:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 255, 255, .25); }
    .cta-section .btn-ghost { background: transparent; border: 2px solid rgba(255, 255, 255, .7); color: #fff; }
    .cta-section .btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }

    /* ===== Footer ===== */
    .site-footer { background: #0F172A; color: #94A3B8; padding: 60px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
    .footer-brand .logo { color: #fff; }
    .footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; max-width: 360px; color: #94A3B8; }
    .footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 600; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a { font-size: 14px; color: #94A3B8; }
    .footer-col ul li a:hover { color: #fff; }
    .footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding-top: 24px; text-align: center; font-size: 13px; color: #64748B; }
    .footer-bottom a { color: #94A3B8; }
    .footer-bottom a:hover { color: #fff; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .nav-search { width: 140px; }
      .entry-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
      .flow-arrow { display: none; }
      .cat-intro-stats { grid-template-columns: repeat(2, 1fr); }
      .cat-intro-inner { gap: 40px; }
    }
    @media (max-width: 768px) {
      .section-pad { padding: 56px 0; }
      .page-banner { padding: 60px 0; }
      .page-banner h1 { font-size: 30px; }
      .site-header { height: auto; }
      .nav-bar { flex-wrap: wrap; height: auto; padding: 12px 0; }
      .logo { font-size: 18px; }
      .nav-menu { display: none; width: 100%; flex-direction: column; gap: 4px; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; margin-top: 8px; }
      .nav-menu.open { display: flex; }
      .nav-link { width: 100%; text-align: center; }
      .nav-actions { margin-left: auto; }
      .nav-search { display: none; }
      .nav-toggle { display: inline-flex; }
      .cat-intro-inner { grid-template-columns: 1fr; }
      .cat-intro-media { margin-top: 20px; }
      .flow-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .guide-item { flex-direction: column; text-align: center; }
      .guide-thumb { width: 100%; height: auto; max-height: 180px; }
      .guide-meta { justify-content: center; flex-wrap: wrap; }
    }
    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .entry-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 26px; }
      .cat-intro-copy h2 { font-size: 24px; }
      .btn-primary, .btn-outline { padding: 8px 16px; font-size: 13px; }
      .page-banner h1 { font-size: 26px; }
      .cta-section h2 { font-size: 24px; }
      .flow-card { padding: 24px 18px; }
    }

/* roulang page: article */
:root {
    --primary: #0f3460;
    --primary-dark: #0a2540;
    --primary-light: #1a4a7a;
    --accent: #f97316;
    --accent-dark: #ea580c;
    --bg: #f6f8fb;
    --bg-alt: #eef2f7;
    --white: #ffffff;
    --text: #1e293b;
    --text-soft: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(15,23,42,0.08);
    --shadow-md: 0 6px 20px rgba(15,23,42,0.08);
    --shadow-lg: 0 16px 40px rgba(15,23,42,0.12);
    --radius: 14px;
    --radius-lg: 22px;
    --radius-sm: 8px;
    --transition: all .25s cubic-bezier(.4,0,.2,1);
    --container: 1200px;
    --header-h: 74px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.3; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    border-radius: 999px;
    font-weight: 600;
    font-size: .95rem;
    line-height: 1.4;
    transition: var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(15,52,96,.25); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(15,52,96,.3); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(249,115,22,.3); }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(249,115,22,.35); }
.btn-accent:active { transform: translateY(0); }
.btn-outline { border-color: var(--border); background: #fff; color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: #f8fafc; transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn:focus-visible, .nav-link:focus-visible, .logo:focus-visible, a:focus-visible {
    outline: 3px solid rgba(249,115,22,.5);
    outline-offset: 2px;
}

/* 导航 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    height: var(--header-h);
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.15rem; font-weight: 700; color: var(--primary); }
.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: 12px;
    font-weight: 800;
    font-size: .9rem;
    letter-spacing: .03em;
    box-shadow: 0 4px 12px rgba(15,52,96,.3);
}
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link {
    padding: 8px 14px;
    border-radius: 999px;
    font-weight: 500;
    font-size: .95rem;
    color: var(--text-soft);
    transition: var(--transition);
}
.nav-link:hover { color: var(--primary); background: rgba(15,52,96,.06); }
.nav-link.active { color: var(--primary); background: rgba(15,52,96,.1); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 7px 14px;
    transition: var(--transition);
}
.nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,52,96,.12); }
.nav-search i { color: var(--text-light); font-size: .85rem; }
.nav-search input { border: none; outline: none; background: transparent; font-size: .9rem; width: 100px; color: var(--text); }
.nav-search input::placeholder { color: var(--text-light); }
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--text); border: 1px solid var(--border); background: #fff; }
.nav-toggle:hover { background: var(--bg); }

/* 页面横幅 */
.page-hero {
    background-size: cover;
    background-position: center;
    padding: 72px 0 80px;
    position: relative;
    color: #fff;
}
.page-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(10,37,64,.92) 0%, rgba(15,52,96,.8) 55%, rgba(15,52,96,.55) 100%); }
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: .88rem; color: rgba(255,255,255,.75); margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a { transition: var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: .75rem; opacity: .6; }
.page-title { font-size: 2.4rem; font-weight: 800; max-width: 800px; line-height: 1.25; margin-bottom: 18px; letter-spacing: -.02em; }
.meta-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; padding: 6px 14px; border-radius: 999px; font-size: .8rem; font-weight: 600; background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.25); }
.meta-item { display: inline-flex; align-items: center; gap: 6px; font-size: .88rem; color: rgba(255,255,255,.85); }

/* 文章区域 */
.article-section { padding: 64px 0 80px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 40px; align-items: start; }
.article-main { min-width: 0; }
.article-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); overflow: hidden; border: 1px solid var(--border); }
.article-cover { position: relative; aspect-ratio: 16/8; overflow: hidden; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.article-card:hover .article-cover img { transform: scale(1.03); }
.article-body-wrap { padding: 40px; }
.article-body { font-size: 1.0625rem; line-height: 1.85; color: #334155; }
.article-body > *:first-child { margin-top: 0; }
.article-body h2 { font-size: 1.55rem; font-weight: 700; color: var(--text); margin: 2.2rem 0 1rem; padding-bottom: .5rem; border-bottom: 2px solid var(--border); letter-spacing: -.01em; }
.article-body h3 { font-size: 1.25rem; font-weight: 700; margin: 1.8rem 0 .75rem; color: var(--text); }
.article-body h4 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 .5rem; color: var(--text); }
.article-body p { margin-bottom: 1.2rem; }
.article-body ul, .article-body ol { margin: 1rem 0 1.4rem; padding-left: 1.5rem; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: .4rem; }
.article-body a { color: var(--accent); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--accent-dark); }
.article-body img { max-width: 100%; border-radius: 12px; box-shadow: var(--shadow-sm); margin: 1.2rem 0; }
.article-body blockquote { background: #fff7ed; border-left: 4px solid var(--accent); border-radius: 0 12px 12px 0; padding: 1rem 1.4rem; color: #9a3412; font-style: normal; margin: 1.4rem 0; }
.article-body code { background: var(--bg-alt); border-radius: 6px; padding: .2rem .4rem; font-size: .9em; color: #be185d; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: .95rem; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: .7rem 1rem; text-align: left; }
.article-body th { background: var(--bg); font-weight: 600; color: var(--text); }
.article-body hr { border: none; border-top: 1px solid var(--border); margin: 1.8rem 0; }
.article-footer { padding: 20px 40px 32px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.article-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.article-tags span { display: inline-flex; align-items: center; gap: 6px; background: var(--bg); border: 1px solid var(--border); padding: 4px 12px; border-radius: 999px; font-size: .85rem; color: var(--text-soft); }
.article-share { display: flex; gap: 8px; }
.share-btn { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--border); color: var(--text-soft); transition: var(--transition); font-size: .9rem; }
.share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

/* 空状态 */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-state i { font-size: 3rem; color: var(--text-light); margin-bottom: 16px; }
.empty-state h2 { font-size: 1.6rem; color: var(--text); margin-bottom: 10px; }
.empty-state p { color: var(--text-light); margin-bottom: 20px; }

/* 侧边栏 */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: calc(var(--header-h) + 24px); }
.sidebar-widget { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); }
.widget-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.widget-title::before { content: ""; width: 3px; height: 18px; background: var(--accent); border-radius: 2px; }
.related-list { display: flex; flex-direction: column; gap: 4px; }
.related-item { display: flex; align-items: flex-start; gap: 10px; padding: 10px 8px; border-radius: var(--radius-sm); transition: var(--transition); }
.related-item:hover { background: var(--bg); }
.related-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-top: 10px; flex-shrink: 0; }
.related-title { font-size: .93rem; line-height: 1.45; color: var(--text-soft); font-weight: 500; }
.related-item:hover .related-title { color: var(--primary); }
.related-date { font-size: .8rem; color: var(--text-light); margin-left: 2px; display: block; }
.sidebar-cats { display: flex; flex-direction: column; gap: 8px; }
.cat-link { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 10px; background: var(--bg); border: 1px solid var(--border); font-weight: 500; font-size: .93rem; color: var(--text-soft); transition: var(--transition); }
.cat-link i { color: var(--accent); width: 18px; text-align: center; }
.cat-link:hover { border-color: var(--primary); color: var(--primary); background: rgba(15,52,96,.04); transform: translateX(4px); }
.sidebar-cta { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; border-radius: var(--radius); padding: 28px; text-align: center; box-shadow: var(--shadow-md); }
.sidebar-cta h3 { font-size: 1.2rem; margin-bottom: 10px; }
.sidebar-cta p { font-size: .9rem; opacity: .85; margin-bottom: 18px; }
.sidebar-cta .btn-accent { box-shadow: 0 4px 16px rgba(0,0,0,.2); }

/* 分类推荐 */
.category-section { padding: 40px 0 70px; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-title { font-size: 2rem; font-weight: 800; color: var(--text); margin-bottom: 10px; letter-spacing: -.02em; }
.section-desc { font-size: 1.02rem; color: var(--text-light); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 220px; display: flex; align-items: flex-end; box-shadow: var(--shadow-md); transition: var(--transition); border: 1px solid var(--border); }
.category-card::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,37,64,0) 30%, rgba(10,37,64,.85) 100%); z-index: 1; }
.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; transition: transform .5s ease; }
.category-card:hover img { transform: scale(1.06); }
.category-card-content { position: relative; z-index: 2; padding: 26px; color: #fff; }
.category-card-content h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 6px; }
.category-card-content p { font-size: .9rem; opacity: .85; margin-bottom: 8px; }
.category-card-link { font-size: .9rem; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.category-card-link i { transition: transform .25s ease; }
.category-card:hover .category-card-link i { transform: translateX(4px); }

/* CTA */
.cta-section { padding: 0 0 80px; }
.cta-box { background: linear-gradient(135deg, var(--primary-dark), var(--primary-light) 60%, #1e5aa8); border-radius: var(--radius-lg); padding: 56px; text-align: center; color: #fff; position: relative; overflow: hidden; box-shadow: var(--shadow-lg); }
.cta-box::after { content: ""; position: absolute; top: -60px; right: -60px; width: 200px; height: 200px; background: rgba(255,255,255,.06); border-radius: 50%; }
.cta-box::before { content: ""; position: absolute; bottom: -80px; left: -40px; width: 160px; height: 160px; background: rgba(255,255,255,.04); border-radius: 50%; }
.cta-box h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; position: relative; z-index: 1; }
.cta-box p { font-size: 1.05rem; opacity: .85; margin-bottom: 28px; max-width: 560px; margin-left: auto; margin-right: auto; position: relative; z-index: 1; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; position: relative; z-index: 1; }

/* 页脚 */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.8); padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { color: #fff; font-size: 1.2rem; margin-bottom: 14px; }
.footer-brand p { font-size: .92rem; line-height: 1.7; opacity: .75; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: .92rem; opacity: .75; transition: var(--transition); }
.footer-col a:hover { opacity: 1; color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 24px; text-align: center; font-size: .88rem; opacity: .6; }
.footer-bottom a { color: #fff; }

/* 响应式 */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
    .sidebar-widget { flex: 1 1 240px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .page-title { font-size: 2rem; }
    .cta-box { padding: 44px 30px; }
}
@media (max-width: 768px) {
    .nav-menu {
        position: fixed; top: var(--header-h); left: 0; right: 0;
        background: #fff; flex-direction: column; align-items: stretch;
        padding: 16px 24px; gap: 4px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        display: none; max-height: calc(100vh - 74px); overflow-y: auto;
    }
    .nav-menu.open { display: flex; }
    .nav-link { padding: 12px 16px; border-radius: 10px; }
    .nav-search { display: none; }
    .nav-toggle { display: inline-flex; }
    .nav-bar .btn { display: none; }
    .page-hero { padding: 52px 0 60px; }
    .page-title { font-size: 1.8rem; }
    .article-body-wrap { padding: 28px 22px; }
    .article-footer { padding: 18px 22px 24px; }
    .category-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-brand p { max-width: 100%; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .logo { font-size: 1rem; }
    .logo-icon { width: 34px; height: 34px; font-size: .8rem; }
    .page-hero { padding: 40px 0 48px; }
    .page-title { font-size: 1.5rem; }
    .meta-row { gap: 10px; }
    .article-body-wrap { padding: 24px 18px; }
    .article-body { font-size: 1rem; line-height: 1.8; }
    .article-body h2 { font-size: 1.3rem; }
    .cta-box { padding: 36px 20px; border-radius: var(--radius); }
    .cta-box h2 { font-size: 1.5rem; }
    .cta-actions { flex-direction: column; width: 100%; }
    .cta-actions .btn { width: 100%; }
    .category-card { min-height: 190px; }
    .section-title { font-size: 1.6rem; }
}

/* roulang page: category2 */
:root {
            --primary: #1a4fd0;
            --primary-dark: #12389e;
            --primary-light: #e8efff;
            --accent: #f97316;
            --accent-dark: #d95a0a;
            --accent-light: #fff1e6;
            --dark: #0b1324;
            --text: #1e2a3e;
            --text-light: #5b6b83;
            --border: #dbe3f0;
            --bg: #f5f7fc;
            --white: #ffffff;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 28px rgba(8, 20, 45, 0.08);
            --shadow-lg: 0 18px 48px rgba(8, 20, 45, 0.14);
            --transition: all .3s ease;
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: var(--font);
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 28px;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 12px rgba(26, 79, 208, 0.3);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-menu .nav-link {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-menu .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-menu .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 79, 208, 0.12);
            background: var(--white);
        }
        .nav-search i {
            font-size: 13px;
            color: var(--text-light);
        }
        .nav-search input {
            border: none;
            background: transparent;
            font-size: 13px;
            width: 110px;
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-outline {
            border-color: var(--border);
            color: var(--text);
            background: var(--white);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 79, 208, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(26, 79, 208, 0.4);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            border: 1px solid var(--border);
            background: var(--white);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            background: linear-gradient(rgba(11, 19, 36, 0.82), rgba(11, 19, 36, 0.88)), url(/assets/images/backpic/back-1.png) center center/cover no-repeat;
            color: #fff;
            text-align: center;
        }
        .page-hero .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 18px;
            backdrop-filter: blur(8px);
        }
        .page-hero .badge i {
            color: var(--accent);
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 1px;
            margin-bottom: 16px;
            max-width: 780px;
            margin-left: auto;
            margin-right: auto;
        }
        .page-hero p.subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 660px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .page-hero .hero-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .page-hero .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
            padding: 12px 28px;
            font-size: 15px;
        }
        .page-hero .btn-primary:hover {
            box-shadow: 0 10px 28px rgba(249, 115, 22, 0.45);
        }
        .page-hero .btn-ghost {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 12px 28px;
            font-size: 15px;
            backdrop-filter: blur(6px);
        }
        .page-hero .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 28px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb i {
            font-size: 10px;
            line-height: 20px;
        }

        /* ===== Intro / Stats Section ===== */
        .stats-section {
            padding: 72px 0 64px;
            background: var(--white);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            background: var(--white);
        }
        .stat-card .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }
        .stat-card .stat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 14px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-head {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-head .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== Features Grid ===== */
        .features-section {
            padding: 80px 0;
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: 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(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
        }
        .feature-card .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            opacity: 0;
            transform: translateY(6px);
            transition: var(--transition);
        }
        .feature-card:hover .feature-link {
            opacity: 1;
            transform: translateY(0);
        }
        .feature-card .feature-link:hover {
            gap: 10px;
        }

        /* ===== Highlights (image + text) ===== */
        .highlights-section {
            padding: 80px 0;
            background: var(--white);
        }
        .highlight-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 56px;
        }
        .highlight-block:last-child {
            margin-bottom: 0;
        }
        .highlight-block.reverse {
            direction: rtl;
        }
        .highlight-block.reverse>* {
            direction: ltr;
        }
        .highlight-media {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
            aspect-ratio: 4/3;
        }
        .highlight-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .highlight-media:hover img {
            transform: scale(1.05);
        }
        .highlight-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 19, 36, 0.2));
            pointer-events: none;
        }
        .highlight-body .tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .highlight-body h3 {
            font-size: 26px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 14px;
        }
        .highlight-body p {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 18px;
        }
        .highlight-body ul {
            margin-bottom: 22px;
        }
        .highlight-body ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 7px 0;
            font-size: 14px;
            color: var(--text);
        }
        .highlight-body ul li i {
            color: var(--primary);
            font-size: 14px;
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .highlight-body .btn {
            padding: 10px 24px;
        }

        /* ===== Process Section ===== */
        .process-section {
            padding: 80px 0;
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }
        .process-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(26, 79, 208, 0.2);
            filter: blur(80px);
        }
        .process-section::after {
            content: "";
            position: absolute;
            bottom: -120px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(249, 115, 22, 0.14);
            filter: blur(80px);
        }
        .process-section .container {
            position: relative;
            z-index: 1;
        }
        .process-section .section-head h2 {
            color: #fff;
        }
        .process-section .section-head p {
            color: rgba(255, 255, 255, 0.65);
        }
        .process-section .section-head .tag {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.16);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }
        .process-steps::before {
            content: "";
            position: absolute;
            top: 32px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.4;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 0 12px;
        }
        .process-step .step-num {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 8px 24px rgba(26, 79, 208, 0.35);
            position: relative;
            z-index: 1;
            border: 3px solid var(--dark);
        }
        .process-step:nth-child(2) .step-num {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
        }
        .process-step:nth-child(3) .step-num {
            background: linear-gradient(135deg, #10b981, #059669);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
        }
        .process-step:nth-child(4) .step-num {
            background: linear-gradient(135deg, #8b5cf6, #6d28d9);
            box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
        }
        .process-step h3 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            line-height: 1.7;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            transition: var(--transition);
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 22px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            position: relative;
            overflow: hidden;
        }
        .cta-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 24px;
            padding: 58px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(26, 79, 208, 0.32);
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-card::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-card h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-card p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }
        .cta-card .btn-primary {
            background: var(--white);
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
            padding: 12px 30px;
            font-size: 15px;
            position: relative;
            z-index: 1;
        }
        .cta-card .btn-primary:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
        }
        .cta-note {
            margin-top: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo .logo-icon {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-bar {
                gap: 14px;
            }
            .nav-menu .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }
            .nav-search input {
                width: 70px;
            }
            .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .highlight-block {
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .nav-bar {
                height: auto;
                flex-wrap: wrap;
                padding: 12px 0;
                gap: 10px;
            }
            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                padding: 10px 0;
                order: 3;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu .nav-link {
                width: 100%;
                padding: 10px 14px;
                font-size: 15px;
            }
            .nav-menu .nav-link.active::after {
                display: none;
            }
            .nav-actions {
                margin-left: auto;
                gap: 6px;
            }
            .nav-search {
                display: none;
            }
            .nav-actions .btn-outline {
                display: none;
            }
            .page-hero {
                padding: 70px 0 60px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero p.subtitle {
                font-size: 15px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-card .stat-num {
                font-size: 28px;
            }
            .section {
                padding: 56px 0;
            }
            .features-section,
            .highlights-section,
            .process-section,
            .faq-section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .highlight-block,
            .highlight-block.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .process-steps::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 16px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 11px;
            }
            .nav-actions .btn {
                padding: 7px 12px;
                font-size: 12px;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .stat-card {
                padding: 24px 18px;
            }
            .highlight-body h3 {
                font-size: 22px;
            }
            .section-head h2 {
                font-size: 23px;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h2 {
                font-size: 20px;
            }
        }

/* roulang page: category3 */
:root{
  --primary:#4f46e5;
  --primary-dark:#3730a3;
  --primary-light:#eef2ff;
  --accent:#06b6d4;
  --accent-light:#ecfeff;
  --bg:#f6f7fb;
  --white:#ffffff;
  --text:#0f172a;
  --text-soft:#475569;
  --text-light:#94a3b8;
  --border:#e2e8f0;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow-md:0 12px 32px rgba(15,23,42,.08);
  --shadow-lg:0 24px 56px rgba(15,23,42,.12);
  --space-section:96px;
  --container:1200px;
  --header-h:76px;
}
*,*::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",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input{font-family:inherit;outline:none}
.container{width:min(var(--container),100% - 48px);margin-inline:auto}
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.nav-bar{height:var(--header-h);display:flex;align-items:center;gap:28px}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:800;color:var(--text);
  white-space:nowrap;
}
.logo-icon{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:900;letter-spacing:.3px;
  box-shadow:0 8px 20px rgba(79,70,229,.35);
  flex-shrink:0;
}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  padding:9px 16px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-soft);
  transition:all .25s ease;
}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary-dark);background:var(--primary-light);font-weight:700}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-search{
  position:relative;display:flex;align-items:center;
  background:var(--bg);border:1px solid var(--border);
  border-radius:999px;padding:0 14px;height:42px;
  transition:border-color .25s, box-shadow .25s, background .25s;
}
.nav-search:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(79,70,229,.12)}
.nav-search i{color:var(--text-light);font-size:14px;margin-right:8px}
.nav-search input{
  border:none;background:transparent;width:130px;font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-light)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .25s, box-shadow .25s, background .25s, border-color .25s, color .25s;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 8px 20px rgba(79,70,229,.3);
}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(79,70,229,.4)}
.btn-outline{
  background:transparent;color:var(--text);border:1px solid var(--border);
}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.btn-light{
  background:#fff;color:var(--primary-dark);
  box-shadow:0 8px 20px rgba(2,6,23,.18);
}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(2,6,23,.24)}
.nav-toggle{display:none;font-size:22px;color:var(--text);width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;transition:background .2s}
.nav-toggle:hover{background:var(--primary-light);color:var(--primary)}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:96px 0 220px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(15,23,42,.92) 0%,rgba(30,27,75,.78) 52%,rgba(6,182,212,.5) 100%);
}
.page-hero .container{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);
  color:#fff;padding:7px 16px;border-radius:999px;
  font-size:13px;font-weight:600;margin-bottom:20px;
  backdrop-filter:blur(8px);
}
.hero-tag i{color:#67e8f9}
.page-hero h1{
  font-size:48px;line-height:1.2;color:#fff;font-weight:800;
  max-width:660px;margin-bottom:18px;
}
.page-hero h1 span{
  background:linear-gradient(90deg,#c7d2fe,#67e8f9);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.page-hero .hero-desc{
  font-size:18px;color:rgba(255,255,255,.85);
  max-width:580px;margin-bottom:30px;
}
.hero-search{
  display:flex;align-items:center;gap:12px;
  background:#fff;border-radius:999px;
  padding:6px 6px 6px 20px;max-width:520px;
  box-shadow:0 16px 40px rgba(2,6,23,.25);
}
.hero-search i{color:var(--text-light)}
.hero-search input{
  flex:1;border:none;font-size:15px;color:var(--text);background:transparent;
}
.hero-search button{
  background:var(--primary);color:#fff;border-radius:999px;
  padding:11px 26px;font-weight:600;font-size:15px;
  box-shadow:0 8px 20px rgba(79,70,229,.35);
  transition:background .25s,transform .25s;
}
.hero-search button:hover{background:var(--primary-dark);transform:translateY(-1px)}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:32px;margin-top:40px;
}
.metric-item{color:#fff}
.metric-item strong{
  display:block;font-size:30px;font-weight:800;line-height:1.2;
}
.metric-item span{font-size:14px;color:rgba(255,255,255,.7)}

/* hero cards overlap */
.hero-card-layer{
  position:relative;z-index:5;margin-top:-90px;
}
.help-topics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.topic-card{
  background:var(--white);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-md);
  transition:transform .3s,box-shadow .3s;
}
.topic-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.topic-card img{height:140px;width:100%;object-fit:cover}
.topic-body{padding:22px 22px 26px}
.topic-body .topic-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:14px;
}
.topic-body h3{font-size:18px;font-weight:700;margin-bottom:6px}
.topic-body p{font-size:14px;color:var(--text-soft);line-height:1.6;margin-bottom:14px}
.topic-link{
  font-size:14px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
  transition:gap .2s;
}
.topic-link:hover{gap:10px}

/* Section base */
.section{padding:var(--space-section) 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:44px;
}
.section-title-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary-dark);
  background:var(--primary-light);padding:6px 14px;border-radius:999px;
  margin-bottom:12px;
}
.section-title-tag i{color:var(--primary)}
.section-title{
  font-size:34px;font-weight:800;line-height:1.25;
}
.section-subtitle{color:var(--text-soft);max-width:560px;font-size:15px}

/* FAQ */
.faq-section{background:var(--white);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.faq-wrap{display:grid;grid-template-columns:420px 1fr;gap:60px}
.faq-side .section-title{font-size:34px;margin-bottom:16px}
.faq-side p{color:var(--text-soft);font-size:15px;margin-bottom:24px}
.faq-contact{
  display:flex;align-items:center;gap:12px;
  background:var(--accent-light);border:1px solid rgba(6,182,212,.25);
  border-radius:var(--radius-md);padding:16px 18px;
}
.faq-contact i{
  width:42px;height:42px;flex-shrink:0;
  background:#fff;color:var(--accent);border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:var(--shadow-sm);
}
.faq-contact strong{display:block;font-size:15px}
.faq-contact span{font-size:13px;color:var(--text-soft)}
.faq-accordion{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .25s,box-shadow .25s;
}
.faq-item.open{border-color:var(--primary);box-shadow:0 12px 32px rgba(79,70,229,.12)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background .2s;
}
.faq-q:hover{background:var(--primary-light)}
.faq-item.open .faq-q{background:var(--primary-light);color:var(--primary-dark)}
.faq-q i{font-size:14px;color:var(--primary);transition:transform .3s;flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .4s ease,padding .3s ease;
  padding:0 24px;color:var(--text-soft);font-size:15px;
}
.faq-item.open .faq-a{max-height:320px;padding:0 24px 22px}

/* process */
.process-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
  margin-top:20px;
}
.process-step{
  position:relative;background:var(--white);
  border-radius:var(--radius-lg);padding:30px 24px;
  box-shadow:var(--shadow-sm);border:1px solid var(--border);
  transition:transform .3s,box-shadow .3s;
}
.process-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.step-num{
  font-size:30px;font-weight:900;color:var(--primary);
  opacity:.18;line-height:1;margin-bottom:14px;
}
.step-icon{
  width:48px;height:48px;border-radius:14px;
  background:linear-gradient(135deg,var(--primary-light),var(--accent-light));
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:20px;margin-bottom:16px;
}
.process-step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.process-step p{font-size:14px;color:var(--text-soft)}

/* support CTA */
.cta-section{
  background:linear-gradient(135deg,#1e1b4b 0%,#312e81 50%,#164e63 100%);
  position:relative;overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.18;
}
.cta-box{position:relative;z-index:2;text-align:center;padding:40px 0}
.cta-box h2{color:#fff;font-size:36px;font-weight:800;margin-bottom:14px}
.cta-box p{color:rgba(255,255,255,.78);font-size:17px;max-width:560px;margin:0 auto 32px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.btn-white{
  background:#fff;color:var(--primary-dark);box-shadow:0 10px 26px rgba(2,6,23,.25);
}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(2,6,23,.3)}
.btn-ghost{
  border:1px solid rgba(255,255,255,.5);color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* Footer */
.site-footer{
  background:#0f172a;color:#94a3b8;padding:70px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;
  padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:380px}
.footer-col h4{
  color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;
}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:#94a3b8;transition:color .25s,padding-left .25s}
.footer-col ul li a:hover{color:#fff;padding-left:6px}
.footer-bottom{
  padding:24px 0;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:14px;
  color:#64748b;
}
.footer-bottom a{color:#94a3b8}
.footer-bottom a:hover{color:#fff}

/* Responsive */
@media(max-width:1024px){
  .nav-menu{display:none}
  .nav-menu.open{
    display:flex;position:fixed;top:var(--header-h);left:16px;right:16px;
    background:#fff;flex-direction:column;align-items:stretch;
    border-radius:20px;padding:16px;gap:6px;
    box-shadow:0 24px 60px rgba(15,23,42,.18);
    border:1px solid var(--border);z-index:99;
  }
  .nav-menu.open .nav-link{display:block;padding:12px 18px;border-radius:14px}
  .nav-toggle{display:inline-flex}
  .nav-search{display:none}
  .help-topics{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:40px}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .page-hero h1{font-size:40px}
}
@media(max-width:768px){
  :root{--space-section:72px}
  .section-title{font-size:28px}
  .page-hero{padding:70px 0 150px}
  .page-hero h1{font-size:32px}
  .hero-metrics{gap:22px}
  .metric-item strong{font-size:24px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .nav-actions .btn-outline{display:none}
}
@media(max-width:520px){
  .container{width:min(var(--container),100% - 32px)}
  .nav-bar{gap:12px}
  .logo{font-size:16px;gap:8px}
  .logo-icon{width:36px;height:36px;font-size:14px}
  .nav-actions .btn-primary{padding:9px 16px;font-size:13px}
  .page-hero h1{font-size:28px}
  .hero-search{padding-left:16px;flex-wrap:wrap;border-radius:20px;background:transparent;box-shadow:none;gap:8px}
  .hero-search input{
    background:#fff;width:100%;border-radius:999px;padding:13px 18px;
    box-shadow:0 8px 20px rgba(2,6,23,.15);
  }
  .hero-search button{width:100%}
  .help-topics{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-actions{flex-direction:column;align-items:center}
  .cta-actions .btn{width:100%;max-width:280px}
}