/* roulang page: index */
:root {
  --primary-blue: #1B5E9E;
  --primary-blue-dark: #124A7A;
  --primary-blue-light: #F0F5FA;
  --milan-red: #C71D2B;
  --gold: #C9A76A;
  --bg-light: #EAF2FA;
  --text-main: #2E3A45;
  --text-secondary: #64748B;
  --text-heading: #1F2A37;
  --border-color: #D8E2EC;
  --border-card: #E5EDF5;
  --card-bg: #FFFFFF;
  --footer-bg: #0F2B45;
  --footer-text: #C7D6E4;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-large: 16px;
  --radius-badge: 999px;
  --shadow-card: 0 10px 30px rgba(27, 94, 158, 0.08);
  --shadow-card-hover: 0 16px 40px rgba(27, 94, 158, 0.15);
  --space-section: 80px;
  --space-section-mobile: 56px;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-light);
  color: var(--text-main);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-blue); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--milan-red); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section-tight { padding: 56px 0; }
.text-center { text-align: center; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  background: #ffffff;
  border-bottom: 1px solid rgba(216, 226, 236, 0.8);
  z-index: 999;
  box-shadow: 0 2px 12px rgba(27, 94, 158, 0.05);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.logo span { color: var(--primary-blue); }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 4px 0;
  position: relative;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.main-nav a:hover { color: var(--primary-blue); border-bottom-color: var(--primary-blue); }
.main-nav a.active { color: var(--primary-blue); border-bottom-color: var(--primary-blue); font-weight: 600; }
.nav-cta .btn { margin-left: 12px; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-heading);
  cursor: pointer;
  padding: 8px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px;
  line-height: 1.4;
  letter-spacing: 0.3px;
}
.btn-primary { background: var(--primary-blue); color: #fff; border-color: var(--primary-blue); }
.btn-primary:hover { background: var(--primary-blue-dark); border-color: var(--primary-blue-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(27, 94, 158, 0.2); }
.btn-outline { background: transparent; color: var(--primary-blue); border-color: var(--primary-blue); }
.btn-outline:hover { background: var(--primary-blue-light); color: var(--primary-blue); border-color: var(--primary-blue); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary-blue); border-color: #fff; }
.btn-white:hover { background: #EAF2FA; color: var(--primary-blue-dark); border-color: #EAF2FA; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.btn-lg { padding: 14px 36px; font-size: 16px; }

/* Hero */
.hero {
  padding: 144px 0 80px;
  position: relative;
  background:
    linear-gradient(120deg, rgba(255,255,255,0.92) 0%, rgba(234,242,250,0.88) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero .grid-x { align-items: center; }
.hero-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-heading);
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-title .highlight { color: var(--primary-blue); }
.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.hero-actions .btn { min-width: 130px; }
.hero-trust { display: flex; gap: 24px; margin-top: 12px; flex-wrap: wrap; }
.hero-trust span { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.hero-trust i { color: var(--primary-blue); }

/* Login Card */
.login-card {
  background: #fff;
  border-radius: var(--radius-large);
  box-shadow: 0 20px 50px rgba(27, 94, 158, 0.12);
  padding: 36px 32px;
  border: 1px solid var(--border-card);
  max-width: 420px;
  margin-left: auto;
}
.login-card .card-header { margin-bottom: 24px; }
.login-card .card-header h3 { font-size: 22px; color: var(--text-heading); font-weight: 700; }
.login-card .card-header p { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text-heading); margin-bottom: 8px; }
.form-group .input-wrap { position: relative; }
.form-group .input-wrap i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-secondary); font-size: 15px; }
.form-group input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 0 14px 0 42px;
  font-size: 14px;
  background: #F9FBFD;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(27,94,158,0.1);
  background: #fff;
  outline: none;
}
.login-options { display: flex; justify-content: space-between; align-items: center; margin-top: 15px; flex-wrap: wrap; gap: 10px; }
.login-options a { font-size: 13px; }
.login-status {
  margin-top: 16px;
  padding: 10px 14px;
  background: #F0F5FA;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  border-left: 3px solid var(--primary-blue);
}
.login-status i { color: var(--primary-blue); }

/* Card Base */
.card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }

/* Section header */
.section-header { margin-bottom: 44px; }
.section-header .tag {
  display: inline-flex;
  align-items: center;
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.4;
  margin-bottom: 12px;
}
.section-header .sub {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.7;
}

/* Pain cards */
.pain-list .grid-x { margin: -12px; }
.pain-list .grid-x > .cell { padding: 12px; }
.pain-card {
  padding: 28px 24px;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.pain-card::before {
  content: attr(data-num);
  position: absolute;
  top: 12px;
  right: 20px;
  font-size: 42px;
  font-weight: 700;
  color: rgba(199, 29, 43, 0.08);
  line-height: 1;
}
.pain-card .icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.pain-card .icon-wrap i { font-size: 20px; color: var(--primary-blue); }
.pain-card h3 { font-size: 18px; font-weight: 600; color: var(--text-heading); margin-bottom: 8px; }
.pain-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
.pain-card .link { font-size: 13px; font-weight: 600; color: var(--primary-blue); display: inline-flex; align-items: center; gap: 6px; }
.pain-card .link:hover { color: var(--milan-red); }
.pain-card .link i { font-size: 12px; transition: transform 0.2s; }
.pain-card .link:hover i { transform: translateX(4px); }

/* Solution */
.solution-section { background: #fff; }
.solution-image { border-radius: var(--radius-large); overflow: hidden; box-shadow: var(--shadow-card); position: relative; }
.solution-image img { width: 100%; height: 360px; object-fit: cover; }
.solution-points { margin-bottom: 36px; }
.solution-points .point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid #EDF2F7;
}
.solution-points .point:last-child { border-bottom: none; }
.solution-points .point i { color: var(--primary-blue); font-size: 18px; margin-top: 4px; }
.solution-points .point h4 { font-size: 16px; font-weight: 600; color: var(--text-heading); }
.solution-points .point p { font-size: 14px; color: var(--text-secondary); margin-top: 2px; }
.steps { display: flex; gap: 24px; margin-top: 32px; flex-wrap: wrap; }
.step {
  flex: 1;
  min-width: 160px;
  position: relative;
  padding: 24px 20px;
  background: var(--bg-light);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-card);
  text-align: center;
}
.step + .step::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -24px;
  width: 24px;
  height: 2px;
  background: var(--primary-blue);
  opacity: 0.3;
}
.step .step-num {
  width: 40px;
  height: 40px;
  background: var(--primary-blue);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 12px;
}
.step h4 { font-size: 16px; color: var(--text-heading); font-weight: 600; margin-bottom: 6px; }
.step p { font-size: 13px; color: var(--text-secondary); }

/* Results */
.results-section { background: var(--bg-light); }
.results-grid .cell { padding: 16px; text-align: center; }
.results-grid .divider-border { border-right: 1px solid var(--border-color); }
.result-num {
  font-size: 56px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.2;
  letter-spacing: -1px;
}
.result-num .suffix { color: var(--milan-red); }
.result-label { font-size: 15px; color: var(--text-heading); font-weight: 600; margin-top: 6px; }
.result-desc { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
.result-deco { width: 32px; height: 4px; background: var(--gold); border-radius: 4px; margin: 10px auto 0; }

/* Testimonials */
.testimonials-section { background: #fff; }
.testimonial-card {
  background: var(--bg-light);
  border-radius: var(--radius-large);
  padding: 40px;
  border: 1px solid var(--border-card);
  position: relative;
}
.testimonial-card .quote-mark {
  font-size: 60px;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
  font-family: Georgia, serif;
  opacity: 0.6;
}
.testimonial-card blockquote {
  font-size: 16px;
  color: var(--text-main);
  line-height: 1.8;
  margin-bottom: 20px;
  border: none;
}
.testimonial-user { display: flex; align-items: center; gap: 14px; }
.testimonial-user .avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--primary-blue-color);
  display: flex;
  align-items: center;
  justify-content: center;
}
.testimonial-user .avatar img { width: 100%; height: 100%; object-fit: cover; }
.testimonial-user .username { font-size: 15px; font-weight: 600; color: var(--text-heading); }
.testimonial-user .role { font-size: 13px; color: var(--text-secondary); }
.testimonial-card.second .quote-mark { color: var(--milan-red); }
.testimonial-card.second .avatar { background: var(--milan-red); }

/* News List */
.news-section { background: var(--bg-light); }
.news-card {
  display: flex;
  align-items: center;
  padding: 24px;
  margin-bottom: 16px;
  gap: 24px;
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s, box-shadow 0.3s;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.news-thumb {
  width: 120px;
  height: 80px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--primary-blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-info { flex: 1; min-width: 0; }
.news-info h4 { font-size: 18px; font-weight: 600; color: var(--text-heading); margin-bottom: 4px; }
.news-info h4 a { color: inherit; }
.news-info h4 a:hover { color: var(--milan-red); }
.news-info p { font-size: 14px; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; margin-bottom: 8px; }
.news-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.news-meta .date { font-size: 13px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 4px; }
.badge { display: inline-block; background: var(--primary-blue-light); color: var(--primary-blue); font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: var(--radius-badge); letter-spacing: 0.3px; }
.badge-red { background: rgba(199,29,43,0.08); color: var(--milan-red); }
.empty-state { text-align: center; padding: 40px 20px; background: #fff; border-radius: var(--radius-card); border: 1px dashed var(--border-color); color: var(--text-secondary); font-size: 15px; }

/* CTA Section */
.cta-section {
  background:
    linear-gradient(135deg, rgba(27,94,158,0.92) 0%, rgba(27,94,158,0.97) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover;
  padding: 80px 0;
  text-align: center;
}
.cta-section h2 { font-size: 32px; color: #fff; font-weight: 700; margin-bottom: 14px; line-height: 1.4; }
.cta-section p { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto 32px; line-height: 1.8; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--footer-bg); padding: 60px 0 0; color: var(--footer-text); }
.site-footer .grid-x { margin-bottom: 40px; }
.site-footer h4 { font-size: 16px; color: #fff; font-weight: 600; margin-bottom: 16px; }
.site-footer .footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 12px; max-width: 280px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: var(--footer-text); font-size: 14px; transition: color 0.2s; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  font-size: 14px;
}
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: var(--footer-text); }
.footer-bottom a:hover { color: #fff; }
.site-footer .fa-brands { margin-right: 6px; }

/* FAQ */
.faq-section { background: #fff; }
.faq-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: box-shadow 0.2s;
}
.faq-card:focus-within { box-shadow: 0 0 0 3px rgba(27,94,158,0.15); outline: none; }
.faq-card summary {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.faq-card summary::-webkit-details-marker { display: none; }
.faq-card summary i { transition: transform 0.3s; color: var(--primary-blue); font-size: 16px; }
.faq-card[open] summary i { transform: rotate(180deg); }
.faq-card .faq-content { margin-top: 12px; font-size: 14px; color: #4B5563; line-height: 1.8; }

/* Animation */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.hero .cell, .section .card, .section .news-card { animation: fadeInUp 0.5s ease-out; }

/* Mobile nav */
@media (max-width: 1023.98px) {
  .main-nav { display: none; position: fixed; top: 64px; left: 0; width: 100%; background: #fff; flex-direction: column; padding: 20px 24px; gap: 4px; border-bottom: 1px solid var(--border-color); box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; font-size: 16px; border-bottom: 1px solid #F0F2F5; width: 100%; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .hero { padding: 120px 0 56px; }
  .hero .login-card { margin-top: 32px; margin-left: 0; max-width: 100%; }
  .step + .step::before { display: none; }
  .testimonial-card { padding: 28px; }
  .news-card { flex-direction: column; align-items: flex-start; }
  .news-thumb { width: 100%; height: 180px; }
  .section { padding: var(--space-section-mobile) 0; }
}

@media (max-width: 639.98px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 34px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .results-grid .divider-border { border-right: none; border-bottom: 1px solid var(--border-color); }
  .result-num { font-size: 44px; }
  .section-header h2 { font-size: 24px; }
  .cta-section h2 { font-size: 24px; }
  .cta-actions .btn { width: 100%; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
            --primary: #1B5E9E;
            --primary-dark: #124A7A;
            --primary-light: #F0F5FA;
            --bg-main: #EAF2FA;
            --text-main: #2E3A45;
            --text-secondary: #64748B;
            --border: #D8E2EC;
            --card-bg: #FFFFFF;
            --accent: #C71D2B;
            --gold: #C9A76A;
            --footer-bg: #0F2B45;
            --footer-text: #C7D6E4;
            --radius-card: 14px;
            --radius-btn: 10px;
            --shadow-card: 0 10px 30px rgba(27, 94, 158, 0.08);
            --shadow-hover: 0 16px 40px rgba(27, 94, 158, 0.15);
            --space-section-pc: 80px;
            --space-section-tablet: 64px;
            --space-section-mobile: 48px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--accent);
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(27, 94, 158, 0.06);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            height: 64px;
            gap: 24px;
        }

        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: baseline;
        }

        .logo span {
            color: var(--accent);
            font-weight: 700;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            display: inline-block;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: 6px;
            position: relative;
            transition: color 0.2s ease;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.2s ease;
        }

        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a:hover::after {
            transform: scaleX(1);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(27, 94, 158, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(27, 94, 158, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            border: 2px solid #fff;
        }

        .btn-white:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
        }

        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .article-hero {
            background: linear-gradient(135deg, #EAF2FA 0%, #DCE9F5 100%);
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--border);
        }

        .article-hero .breadcrumbs {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

        .article-hero .breadcrumbs a {
            color: var(--text-secondary);
        }

        .article-hero .breadcrumbs a:hover {
            color: var(--primary);
        }

        .article-hero .breadcrumbs .sep {
            margin: 0 8px;
            color: #9FB3C8;
        }

        .article-hero .breadcrumbs .current {
            color: var(--text-main);
            font-weight: 500;
            max-width: 400px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-hero h1 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 700;
            color: #1F2A37;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 14px;
            margin-top: 8px;
        }

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

        .article-meta .badge {
            background: rgba(199, 29, 43, 0.1);
            color: var(--accent);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }

        .article-body-wrapper {
            padding: 48px 0 24px;
        }

        .article-body {
            max-width: 860px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 40px 48px;
        }

        .article-content {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: #1F2A37;
            margin: 36px 0 16px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            position: relative;
        }

        .article-content h2:first-child {
            border-top: none;
            padding-top: 0;
            margin-top: 0;
        }

        .article-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin: 28px 0 12px;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 14px 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
            color: #374151;
            font-style: italic;
        }

        .article-content img {
            border-radius: 12px;
            margin: 20px 0;
            box-shadow: var(--shadow-card);
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--accent);
        }

        .article-content code {
            background: #F0F4F8;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
        }

        .article-content pre {
            background: #1F2A37;
            color: #E5EDF5;
            padding: 16px 20px;
            border-radius: 10px;
            overflow-x: auto;
            margin: 20px 0;
            line-height: 1.6;
        }

        .related-section {
            padding: 56px 0;
        }

        .related-section .section-title {
            font-size: 24px;
            font-weight: 700;
            color: #1F2A37;
            margin-bottom: 28px;
            position: relative;
            padding-left: 16px;
        }

        .related-section .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--accent);
            border-radius: 4px;
        }

        .card-item {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 20px 24px;
            margin-bottom: 20px;
            display: flex;
            gap: 20px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .card-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .card-thumb {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-light);
        }

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

        .card-info {
            flex: 1;
            min-width: 0;
        }

        .card-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: #1F2A37;
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color 0.2s ease;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-info h3:hover {
            color: var(--accent);
        }

        .card-info .card-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .card-meta .badge-cat {
            background: rgba(27, 94, 158, 0.1);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }

        .related-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 32px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .related-card .related-thumb {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
        }

        .related-card .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .related-card .related-body {
            padding: 16px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: #1F2A37;
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color 0.2s ease;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card h3:hover {
            color: var(--accent);
        }

        .related-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .related-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: auto;
            flex-wrap: wrap;
        }

        .back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            padding: 8px 16px;
            border-radius: 8px;
            background: var(--primary-light);
            transition: all 0.2s ease;
        }

        .back-home:hover {
            background: var(--primary);
            color: #fff;
        }

        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding-top: 60px;
            margin-top: 48px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand .logo span {
            color: #7AB3E0;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: #94A9C0;
            margin-top: 12px;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            color: #94A9C0;
            font-size: 13px;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 48px;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: #7A91A9;
        }

        .footer-bottom a {
            color: #7AB3E0;
        }

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

        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }

        .not-found-box .icon {
            font-size: 64px;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .not-found-box h2 {
            font-size: 24px;
            color: #1F2A37;
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        @media (max-width: 1023px) {
            .main-nav {
                gap: 4px;
            }

            .main-nav a {
                padding: 6px 10px;
                font-size: 13px;
            }

            .article-body {
                padding: 32px;
            }

            .related-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 639px) {
            .container {
                padding: 0 16px;
            }

            .site-header .container {
                height: auto;
                min-height: 56px;
                flex-wrap: wrap;
                padding-top: 8px;
                padding-bottom: 8px;
                gap: 8px;
            }

            .logo {
                font-size: 17px;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                background: #fff;
                padding: 12px 0;
                border-top: 1px solid var(--border);
                gap: 4px;
            }

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

            .main-nav a {
                width: 100%;
                padding: 10px 16px;
                font-size: 15px;
            }

            .main-nav a::after {
                display: none;
            }

            .nav-cta {
                margin-left: auto;
            }

            .nav-toggle {
                display: block;
            }

            .nav-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .article-hero {
                padding: 32px 0 24px;
            }

            .article-hero .breadcrumbs .current {
                max-width: 200px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-body-wrapper {
                padding: 32px 0 16px;
            }

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

            .related-section {
                padding: 40px 0;
            }

            .related-cards {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .card-item {
                flex-direction: column;
                padding: 16px;
            }

            .card-thumb {
                width: 100%;
                height: auto;
                aspect-ratio: 16 / 9;
            }

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

        @media (max-width: 480px) {
            .site-header .container {
                height: auto;
                padding-top: 8px;
                padding-bottom: 8px;
            }

            .logo {
                font-size: 16px;
            }

            .nav-cta .btn {
                display: none;
            }

            .article-hero h1 {
                font-size: 22px;
            }
        }

/* roulang page: category1 */
:root {
  --bg-main: #EAF2FA;
  --bg-light: #F5F9FD;
  --primary: #1B5E9E;
  --primary-dark: #124A7A;
  --primary-light: #E3EDF7;
  --accent: #C71D2B;
  --accent-light: #FDF0F0;
  --gold: #C9A76A;
  --text-main: #2E3A45;
  --text-title: #1F2A37;
  --text-secondary: #64748B;
  --border: #D8E2EC;
  --card-bg: #FFFFFF;
  --footer-bg: #0F2B45;
  --footer-text: #C7D6E4;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-img: 16px;
  --shadow-card: 0 10px 30px rgba(27,94,158,0.08);
  --shadow-hover: 0 16px 40px rgba(27,94,158,0.15);
  --space-section: 80px;
  --transition: all 0.25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,Arial,sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { color: var(--accent); }
ul { list-style: none; }
button, input { font-family: inherit; }
.grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; margin: 0 auto; }
.row { max-width: 1200px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 26px;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  min-height: 44px;
  text-align: center;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(27,94,158,0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(27,94,158,0.3);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}
.btn-light:hover {
  background: #EAF2FA;
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}

/* ===== Badge / Tags ===== */
.badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  line-height: 1.5;
  background: var(--primary-light);
  color: var(--primary);
  white-space: nowrap;
}
.badge-gold {
  background: rgba(201,167,106,0.15);
  color: #8A6D3B;
}
.badge-red {
  background: var(--accent-light);
  color: var(--accent);
}

/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #fff;
  height: 64px;
  border-bottom: 1px solid #E5EDF5;
  box-shadow: 0 2px 12px rgba(27,94,158,0.05);
}
.site-header .grid-container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-header .logo {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -0.3px;
  white-space: nowrap;
  line-height: 1.3;
}
.site-header .logo span {
  color: var(--accent);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}
.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  position: relative;
  padding: 6px 2px;
  line-height: 1.4;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}
.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}
.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-cta {
  flex-shrink: 0;
}
.nav-cta .btn {
  padding: 10px 22px;
  font-size: 14px;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-title);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
body { padding-top: 64px; }

/* ===== Hero ===== */
.category-hero {
  position: relative;
  padding: 100px 0 60px;
  background:
    linear-gradient(180deg, rgba(234,242,250,0.92) 0%, rgba(234,242,250,0.97) 50%, var(--bg-main) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
}
.category-hero .hero-inner {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.category-hero .page-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(27,94,158,0.15);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
  letter-spacing: 0.5px;
}
.category-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-title);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.category-hero h1 .highlight {
  color: var(--primary);
  position: relative;
}
.category-hero h1 .highlight::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background: rgba(27,94,158,0.12);
  border-radius: 4px;
  z-index: -1;
}
.category-desc {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}
.category-desc .desc-lead {
  color: var(--text-main);
  font-weight: 500;
}

/* ===== Feature Image ===== */
.category-feature {
  padding: var(--space-section) 0 0;
}
.feature-card {
  position: relative;
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  background: var(--card-bg);
}
.feature-card img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}
.feature-card .feature-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(27,94,158,0.15) 0%, rgba(255,255,255,0.35) 100%);
  pointer-events: none;
}
.feature-card-content {
  position: absolute;
  left: 30px;
  bottom: 28px;
  right: 30px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-card);
  padding: 22px 26px;
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 8px 24px rgba(31,42,55,0.08);
}
.feature-card-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 6px;
}
.feature-card-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== Category Cards (offset layout) ===== */
.category-cards {
  padding: var(--space-section) 0;
}
.section-heading {
  margin-bottom: 34px;
}
.section-heading .section-tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}
.section-heading h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-title);
  line-height: 1.4;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}
.section-heading p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}
.category-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: 34px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 4px;
  width: 100%;
  background: var(--primary);
  opacity: 0;
  transition: var(--transition);
}
.category-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.category-card:hover::before {
  opacity: 1;
}
.category-card .card-number {
  font-size: 42px;
  font-weight: 800;
  color: rgba(27,94,158,0.12);
  line-height: 1;
  margin-bottom: 18px;
  font-family: Inter, Arial, sans-serif;
  display: block;
}
.category-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 12px;
  line-height: 1.4;
}
.category-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.85;
  flex-grow: 1;
  margin-bottom: 20px;
}
.category-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.category-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  padding-top: 10px;
  border-top: 1px solid #EDF2F7;
}
.category-card .card-link i {
  font-size: 12px;
  transition: var(--transition);
}
.category-card .card-link:hover i {
  transform: translateX(4px);
}
.category-card.card-red::before {
  background: var(--accent);
}
.category-card.card-gold::before {
  background: var(--gold);
}
.category-card.card-blue::before {
  background: var(--primary);
}

/* ===== Steps ===== */
.category-steps {
  padding: 60px 0 var(--space-section);
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 36px;
}
.step-item {
  position: relative;
  padding: 28px 24px;
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  text-align: center;
}
.step-item .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  box-shadow: 0 6px 14px rgba(27,94,158,0.25);
}
.step-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}
.step-item::after {
  content: '\f0da';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: -24px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 20px;
  z-index: 2;
  background: var(--bg-light);
  border-radius: 50%;
  padding: 2px 4px;
}
.step-item:last-child::after {
  display: none;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--bg-main);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(27,94,158,0.04);
}
.accordion-item .accordion-title {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}
.accordion-item .accordion-title:hover {
  color: var(--primary);
}
.accordion-item .accordion-title .fa {
  transition: transform 0.3s ease;
  color: var(--primary);
  font-size: 14px;
  flex-shrink: 0;
}
.accordion-item.is-active .accordion-title .fa {
  transform: rotate(180deg);
}
.accordion-content {
  display: none;
  padding: 0 24px 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-top: 1px solid transparent;
}
.accordion-item.is-active .accordion-content {
  display: block;
  border-top-color: #EEF3F8;
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(27,94,158,0.92) 0%, rgba(18,74,122,0.95) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.4;
  position: relative;
  z-index: 1;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.82);
  max-width: 520px;
  margin: 0 auto 34px;
  position: relative;
  z-index: 1;
}
.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--footer-bg);
  padding: 70px 0 0;
  font-size: 14px;
}
.site-footer .footer-brand .logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  display: inline-block;
  line-height: 1.4;
}
.site-footer .footer-brand .logo span {
  color: #7AB3E0;
}
.site-footer .footer-brand p {
  color: var(--footer-text);
  line-height: 1.9;
  margin-bottom: 0;
  max-width: 320px;
}
.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.site-footer .footer-links li {
  margin-bottom: 12px;
}
.site-footer .footer-links a {
  color: var(--footer-text);
  font-size: 14px;
  transition: var(--transition);
}
.site-footer .footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-bottom {
  margin-top: 50px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
}
.footer-bottom .grid-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  color: #93AFC8;
  font-size: 13px;
}
.footer-bottom a {
  color: #7AB3E0;
}
.footer-bottom a:hover {
  color: #fff;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  :root { --space-section: 64px; }
  .main-nav {
    gap: 20px;
  }
  .site-header .logo {
    font-size: 17px;
  }
  .feature-card img {
    height: 280px;
  }
}
@media screen and (max-width: 768px) {
  :root { --space-section: 56px; }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 28px;
    gap: 16px;
    box-shadow: 0 16px 32px rgba(31,42,55,0.12);
    border-bottom: 1px solid var(--border);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    margin: 0;
    z-index: 99;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav a {
    font-size: 16px;
    width: 100%;
    padding: 8px 0;
  }
  .main-nav a::after {
    display: none;
  }
  .main-nav a.active {
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 8px;
    padding-left: 14px;
  }
  .nav-cta {
    margin-left: auto;
    margin-right: 0;
  }
  .nav-cta .btn {
    display: none;
  }
  .category-hero {
    padding: 70px 0 50px;
  }
  .feature-card img {
    height: 220px;
  }
  .feature-card-content {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin: -1px 0 0;
    border-radius: 0 0 var(--radius-card) var(--radius-card);
    border-left: none;
    border-right: none;
    border-bottom: none;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .step-item::after {
    display: none;
  }
  .cta-section h2 {
    font-size: 26px;
  }
  .site-footer {
    padding-top: 50px;
  }
  .site-footer h4 {
    margin-bottom: 14px;
  }
  .footer-bottom .grid-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}
@media screen and (max-width: 520px) {
  .grid-container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .site-header .logo {
    font-size: 14px;
    letter-spacing: -0.2px;
  }
  .site-header .logo span {
    display: inline;
  }
  .category-hero h1 {
    font-size: 28px;
  }
  .category-hero .page-kicker {
    font-size: 12px;
  }
  .category-cards {
    padding: 48px 0;
  }
  .section-heading h2 {
    font-size: 24px;
  }
  .category-card {
    padding: 26px 22px;
  }
  .feature-card-content h3 {
    font-size: 18px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #1B5E9E;
  --primary-dark: #124A7A;
  --primary-light: #F0F5FA;
  --accent: #C71D2B;
  --gold: #C9A76A;
  --bg: #EAF2FA;
  --card-bg: #FFFFFF;
  --text: #2E3A45;
  --text-secondary: #64748B;
  --text-heading: #1F2A37;
  --border: #D8E2EC;
  --border-light: #E5EDF5;
  --radius: 14px;
  --radius-btn: 10px;
  --radius-img: 16px;
  --shadow: 0 10px 30px rgba(27, 94, 158, 0.08);
  --shadow-hover: 0 16px 40px rgba(27, 94, 158, 0.15);
  --section-gap: 80px;
  --nav-h: 64px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
a:hover { color: var(--primary); }
ul { list-style: none; }
button, input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-gap { padding: var(--section-gap) 0; }
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-sub { color: var(--text-secondary); font-size: 15px; max-width: 720px; margin-bottom: 40px; }

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(31, 42, 55, 0.03);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-heading);
  white-space: nowrap;
  letter-spacing: -0.5px;
}
.logo span { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav a {
  position: relative;
  padding: 6px 14px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: color .2s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform .2s ease;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav a.active::after { transform: scaleX(1); }
.nav-cta { display: flex; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  outline: none;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(27, 94, 158, 0.25);
}
.btn-secondary {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}
.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover {
  background: #E8F0F8;
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(15, 43, 69, 0.2);
}
.btn-lg { padding: 14px 34px; font-size: 15px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-heading);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
}
.nav-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* CateHero */
.cate-hero {
  padding: calc(var(--nav-h) + 70px) 0 60px;
  background: linear-gradient(135deg, rgba(255,255,255,0.90) 0%, rgba(234,242,250,0.82) 100%), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--border-light);
}
.cate-hero-tag {
  display: inline-block;
  background: rgba(27, 94, 158, 0.10);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.cate-hero h1 {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.25;
  margin-bottom: 18px;
}
.cate-hero-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 860px;
  line-height: 1.9;
  margin-bottom: 24px;
}
.cate-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}
.cate-hero-tags .badge {
  display: inline-block;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  padding: 4px 16px;
  border-radius: 999px;
  transition: all .2s ease;
}
.cate-hero-tags .badge:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.badge-accent { background: #FDF0F0; border-color: #F5CBD0; color: var(--accent); font-size: 12px; padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.badge-blue { background: #EAF2FA; border-color: #C5DDEF; color: var(--primary); font-size: 12px; padding: 2px 10px; border-radius: 999px; font-weight: 600; }

/* Intro Section */
.intro-section { padding: 80px 0; }
.intro-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-wrap: wrap;
}
.intro-media {
  flex: 0 0 48%;
  min-height: 320px;
  background: var(--bg) url('/assets/images/coverpic/cover-2.png') center / cover no-repeat;
}
.intro-media img { width: 100%; height: 100%; object-fit: cover; }
.intro-content { flex: 0 0 52%; padding: 40px; }
.intro-content h2 { font-size: 26px; font-weight: 700; color: var(--text-heading); margin-bottom: 8px; }
.intro-content .intro-lead { color: var(--text-secondary); margin-bottom: 24px; font-size: 15px; }
.intro-list { display: grid; gap: 16px; }
.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
}
.intro-list i {
  flex-shrink: 0;
  width: 28px; height: 28px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-top: 2px;
}
@media (max-width: 1023px) {
  .intro-media, .intro-content { flex: 0 0 100%; }
  .intro-media { min-height: 220px; }
  .intro-content { padding: 28px; }
}

/* Card Grid */
.card-grid-section { padding: 80px 0; background: #fff; border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.card-grid-header { margin-bottom: 40px; }
.card-grid-row { margin-bottom: 30px; }
.card-block {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card-block:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.card-block-img { overflow: hidden; }
.card-block-img img { width: 100%; height: 200px; object-fit: cover; transition: transform .4s ease; }
.card-block:hover .card-block-img img { transform: scale(1.04); }
.card-block-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.card-block-tag { margin-bottom: 12px; }
.card-block-title { font-size: 20px; font-weight: 700; color: var(--text-heading); margin-bottom: 10px; line-height: 1.4; }
.card-block-title a:hover { color: var(--accent); }
.card-block-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; flex: 1; }
.card-block-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.card-block-link i { transition: transform .2s ease; }
.card-block-link:hover i { transform: translateX(4px); }
/* 小卡片 */
.card-small {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-img);
  padding: 30px;
  box-shadow: var(--shadow);
  transition: all .25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card-small:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.card-small-icon {
  width: 52px; height: 52px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}
.card-small:nth-child(odd) .card-small-icon { background: #FDF0F0; color: var(--accent); }
.card-small-title { font-size: 18px; font-weight: 700; color: var(--text-heading); margin-bottom: 10px; line-height: 1.4; }
.card-small-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 18px; flex: 1; }
.card-small-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.card-small-link i { transition: transform .2s ease; }
.card-small-link:hover i { transform: translateX(4px); }

/* FAQ */
.faq-section { padding: 80px 0; }
.faq-wrap { max-width: 900px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  margin-bottom: 14px;
  padding: 20px 24px;
  transition: all .2s ease;
}
.faq-item:hover { box-shadow: var(--shadow); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-heading);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  padding: 0;
}
.faq-q:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: transform .3s ease, background .2s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  font-size: 14px;
  color: #4B5563;
  line-height: 1.8;
  border-top: 1px solid transparent;
}
.faq-item.open .faq-a {
  max-height: 400px;
  border-top-color: var(--border-light);
  padding-top: 16px;
  margin-top: 14px;
}

/* CTA */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, rgba(27,94,158,0.94) 0%, rgba(18,74,122,0.98) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  padding: 90px 0;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(234,242,250,0.06) 25%, transparent 25%, transparent 50%, rgba(234,242,250,0.06) 50%, rgba(234,242,250,0.06) 75%, transparent 75%);
  background-size: 80px 80px;
  opacity: 0.25;
}
.cta-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 14px;
}
.cta-inner p {
  color: rgba(255,255,255,0.85);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer {
  background: #0F2B45;
  color: #C7D6E4;
  padding-top: 70px;
}
.site-footer .footer-brand .logo { color: #fff; font-size: 22px; }
.site-footer .footer-brand .logo span { color: #7AB3E0; }
.site-footer p { font-size: 14px; line-height: 1.9; margin-top: 14px; color: #8FA8C0; }
.site-footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.site-footer h4::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 28px; height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: #8FA8C0; transition: all .2s ease; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
  margin-top: 50px;
  font-size: 13px;
  color: #5D7794;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom a { color: #8FA8C0; }
.footer-bottom a:hover { color: #fff; }

/* Scroll top */
.scroll-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  box-shadow: 0 6px 18px rgba(27,94,158,0.3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
  z-index: 999;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--primary-dark); transform: translateY(-3px); }
.scroll-top:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* Responsive */
@media screen and (max-width: 1023px) {
  :root { --section-gap: 64px; }
  .main-nav {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 10px 30px rgba(31,42,55,0.08);
    transform: translateY(-120%);
    transition: transform .3s ease;
    z-index: 999;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { width: 100%; padding: 10px 0; font-size: 16px; border-bottom: 1px solid var(--border-light); }
  .main-nav a:last-child { border-bottom: none; }
  .main-nav a::after { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-cta-mobile {
    display: block;
    margin-top: 12px;
    width: 100%;
  }
}
@media (max-width: 639px) {
  .container { padding: 0 16px; }
  :root { --section-gap: 48px; }
  .cate-hero { padding-top: calc(var(--nav-h) + 40px); }
  .section-title { font-size: 24px; }
  .cta-inner h2 { font-size: 26px; }
  .card-block-body { padding: 20px; }
  .card-small { padding: 22px; }
  .footer-bottom .container { flex-direction: column; text-align: center; gap: 4px; }
  .btn-lg { padding: 12px 24px; }
}

/* roulang page: category2 */
:root {
  --c-bg: #EAF2FA;
  --c-primary: #1B5E9E;
  --c-primary-dark: #124A7A;
  --c-accent: #C71D2B;
  --c-gold: #C9A76A;
  --c-text: #2E3A45;
  --c-text-light: #64748B;
  --c-border: #D8E2EC;
  --c-card: #FFFFFF;
  --c-heading: #1F2A37;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-img: 16px;
  --radius-badge: 999px;
  --shadow-card: 0 10px 30px rgba(27, 94, 158, 0.08);
  --shadow-hover: 0 16px 40px rgba(27, 94, 158, 0.15);
  --space-section: 80px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Inter, Arial, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
h1, h2, h3 { color: var(--c-heading); line-height: 1.3; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  border: 2px solid transparent;
  text-align: center;
  transition: all 0.2s ease;
  cursor: pointer;
}
.btn:focus {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--c-primary);
  color: #fff;
  padding: 10px 22px;
}
.btn-primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
}
.btn-white {
  background: #fff;
  color: var(--c-primary);
}
.btn-white:hover {
  background: #F0F5FA;
  transform: translateY(-2px);
}
.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.8);
}
.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  transform: translateY(-2px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 2px 12px rgba(27, 94, 158, 0.06);
}
.site-header .container {
  max-width: 1200px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: #1F2A37;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.logo span { color: var(--c-primary); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--c-text);
  border-radius: 8px;
  transition: color 0.2s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.2s;
}
.main-nav a:hover { color: var(--c-primary); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--c-primary); }
.main-nav a.active::after { transform: scaleX(1); }
.nav-cta .btn { display: inline-block; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--c-primary);
  cursor: pointer;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle:focus { outline: 2px solid var(--c-primary); outline-offset: 2px; }

.page-hero {
  position: relative;
  padding: 72px 0 64px;
  background: linear-gradient(135deg, rgba(234, 242, 250, 0.96), rgba(255, 255, 255, 0.9)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--c-border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-text-light);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--c-primary); }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb .sep { color: #B6C7D8; }
.page-hero h1 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  color: var(--c-heading);
  margin-bottom: 20px;
}
.page-hero .hero-desc {
  max-width: 780px;
  font-size: 15px;
  color: var(--c-text-light);
  line-height: 1.9;
}

.section-head { max-width: 720px; margin: 0 auto 40px; }
.section-head.center { text-align: center; }
.section-head.left { text-align: left; margin: 0 0 24px; }
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--c-heading);
  margin-bottom: 12px;
  display: inline-block;
}
.section-head.center h2::after,
.section-head.left h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--c-accent);
  border-radius: 99px;
  margin-top: 10px;
}
.section-head.center h2::after { margin-left: auto; margin-right: auto; }
.section-head p { font-size: 15px; color: var(--c-text-light); line-height: 1.8; }

.topic-cards { padding: var(--space-section) 0; }
.card-spot {
  background: var(--c-card);
  border: 1px solid #E5EDF5;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px;
  height: 100%;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card-spot:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.card-spot .spot-num {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 13px;
  font-weight: 700;
  color: #9FB6CC;
  letter-spacing: 1px;
  background: #F0F5FA;
  border-radius: var(--radius-badge);
  padding: 4px 12px;
}
.card-spot .spot-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #EAF2FA, #DCE9F5);
  color: var(--c-primary);
  font-size: 24px;
  margin-bottom: 20px;
}
.card-spot h3 { font-size: 20px; font-weight: 700; margin-bottom: 14px; }
.card-spot p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-light);
  margin-bottom: 20px;
}
.card-spot .spot-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary);
  transition: color 0.2s;
}
.card-spot .spot-link i { transition: transform 0.2s; }
.card-spot .spot-link:hover { color: var(--c-accent); }
.card-spot .spot-link:hover i { transform: translateX(4px); }

.stats-section {
  background: #fff;
  padding: var(--space-section) 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.stat-cell { display: flex; align-items: center; justify-content: center; }
.stat-cell + .stat-cell { border-left: 1px solid var(--c-border); }
.stat-item { text-align: center; padding: 12px 16px; }
.stat-item .num {
  font-size: 46px;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.1;
}
.stat-item .num span { font-size: 18px; font-weight: 700; margin-left: 2px; color: var(--c-primary); }
.stat-item .label { font-weight: 600; color: var(--c-text); margin-top: 8px; font-size: 16px; }
.stat-item .sub { color: var(--c-text-light); font-size: 13px; margin-top: 6px; }

.process-section { padding: var(--space-section) 0; }
.process-grid { display: flex; align-items: center; gap: 56px; }
.process-media { flex: 1; }
.process-media img {
  width: 100%;
  border-radius: var(--radius-img);
  box-shadow: var(--shadow-card);
  border: 1px solid #E5EDF5;
}
.process-content { flex: 1; }
.process-list { list-style: none; margin-top: 24px; }
.process-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--c-text);
  border-bottom: 1px dashed #E5EDF5;
}
.process-list li i { color: var(--c-primary); margin-top: 5px; font-size: 16px; }
.steps {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 2px solid #E5EDF5;
}
.step { flex: 1; text-align: center; position: relative; }
.step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 10px;
}
.step span:last-child { display: block; font-size: 14px; font-weight: 600; color: var(--c-text); }
.step + .step::before {
  content: "";
  position: absolute;
  top: 19px;
  left: -12px;
  right: calc(50% + 19px);
  height: 2px;
  background: #D8E2EC;
}

.faq-section { padding: var(--space-section) 0; }
.faq-section .container { max-width: 860px; }
.accordion { list-style: none; margin: 0; }
.accordion-item {
  background: #fff;
  border: 1px solid #E5EDF5;
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: 0 4px 14px rgba(27, 94, 158, 0.04);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.accordion-item:hover { box-shadow: var(--shadow-card); }
.accordion-title {
  background: #fff;
  color: var(--c-heading);
  font-size: 15px;
  font-weight: 600;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  line-height: 1.5;
  border-radius: 12px;
}
.accordion-title:hover { color: var(--c-primary); }
.accordion-title::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--c-primary);
  transition: transform 0.2s;
  order: 2;
  flex-shrink: 0;
}
.accordion-item.is-active .accordion-title::after { transform: rotate(180deg); }
.accordion-content {
  padding: 0 22px 20px;
  font-size: 14px;
  color: #4B5563;
  line-height: 1.8;
  border-top: 1px dashed #E5EDF5;
  margin: 0 22px 0;
  padding-top: 16px;
  padding-bottom: 16px;
}
.accordion-content p { margin-bottom: 0; }

.cta-section {
  padding: var(--space-section) 0;
  background: linear-gradient(135deg, rgba(27, 94, 158, 0.94), rgba(18, 74, 122, 0.96)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  text-align: center;
}
.cta-section .container { max-width: 760px; }
.cta-section h2 { color: #fff; font-size: 32px; margin-bottom: 14px; }
.cta-section p { color: #DCE9F5; font-size: 16px; margin-bottom: 32px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.site-footer {
  background: #0F2B45;
  color: #C7D6E4;
  padding-top: 56px;
}
.site-footer .footer-brand .logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  display: inline-block;
  margin-bottom: 16px;
}
.site-footer .footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  color: #9FB6CC;
  max-width: 320px;
}
.site-footer h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-links { list-style: none; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #C7D6E4; font-size: 14px; transition: color 0.2s, padding-left 0.2s; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  margin-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 0;
  font-size: 13px;
  color: #8FA5BB;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom a { color: #C7D6E4; }
.footer-bottom a:hover { color: #fff; }

@media (max-width: 1023px) {
  :root { --space-section: 64px; }
  .site-header .container { height: 60px; padding: 0 16px; }
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    z-index: 99;
    flex-direction: column;
    align-items: stretch;
    padding: 24px 16px;
    gap: 12px;
    display: none;
    overflow-y: auto;
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    font-size: 18px;
    padding: 14px 16px;
    border-radius: 10px;
    background: #F5F9FC;
    color: var(--c-text);
  }
  .main-nav a.active { background: var(--c-primary); color: #fff; }
  .main-nav a::after { display: none; }
  .nav-cta { display: block; }
  .nav-cta .btn { padding: 8px 14px; font-size: 13px; }
  .page-hero { padding: 56px 0 48px; }
  .process-grid { flex-direction: column; gap: 40px; }
  .stat-cell:nth-child(3) { border-left: none; }
}
@media (max-width: 639px) {
  :root { --space-section: 48px; }
  .container { padding: 0 16px; }
  .page-hero { padding: 40px 0 36px; }
  .page-hero h1 { font-size: 28px; }
  .section-head h2 { font-size: 24px; }
  .card-spot { padding: 24px; }
  .stat-cell { border-left: none; }
  .stat-item .num { font-size: 38px; }
  .steps { flex-direction: column; gap: 16px; }
  .step + .step::before { display: none; }
  .cta-section h2 { font-size: 26px; }
  .cta-buttons { flex-direction: column; align-items: stretch; }
  .cta-buttons .btn { width: 100%; }
  .footer-bottom { flex-direction: column; }
}