/* roulang page: index */
:root {
  --primary: #0e2a47;
  --primary-light: #16395e;
  --primary-dark: #091d33;
  --accent: #c9a96a;
  --accent-light: #e3cfa3;
  --bg: #f5f7fa;
  --bg-white: #ffffff;
  --bg-dark: #0b1d30;
  --text: #1a2433;
  --text-weak: #5b6b7c;
  --border: #e3e8ef;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(14, 42, 71, .08);
  --shadow-hover: 0 16px 40px rgba(14, 42, 71, .14);
  --transition: .3s ease;
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; border: none; outline: none; background: none; color: inherit; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 96px 0; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(201, 169, 106, .12);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary);
  letter-spacing: .5px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-weak);
  margin-top: 12px;
  max-width: 640px;
}
.section-head {
  margin-bottom: 48px;
}
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Header */
.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);
}
.nav-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: .5px;
  white-space: nowrap;
  line-height: 1.3;
}
.logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  position: relative;
  transition: color var(--transition);
  padding: 6px 0;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-white);
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: all var(--transition);
}
.nav-toggle span::before { transform: translate(-50%, -7px); }
.nav-toggle span::after { transform: translate(-50%, 5px); }
.nav-toggle.active span { background: transparent; }
.nav-toggle.active span::before { transform: translate(-50%, -50%) rotate(45deg); }
.nav-toggle.active span::after { transform: translate(-50%, -50%) rotate(-45deg); }

/* Hero */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 640px;
  padding: 100px 0;
  color: #fff;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9, 29, 51, .94) 0%, rgba(14, 42, 71, .82) 55%, rgba(22, 57, 94, .7) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .2);
  padding: 8px 18px;
  border-radius: 50px;
  backdrop-filter: blur(4px);
  margin-bottom: 28px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 1px;
}
.hero h1 .accent-text {
  color: var(--accent);
}
.hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, .85);
  margin-top: 24px;
  max-width: 620px;
}
.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(201, 169, 106, .35);
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(201, 169, 106, .45);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .5);
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, .1);
  transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(0); }
.btn-dark {
  background: var(--primary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn:focus-visible {
  outline: 3px solid rgba(201, 169, 106, .6);
  outline-offset: 2px;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.stat-item h3 {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
}
.stat-item p {
  font-size: 14px;
  color: rgba(255, 255, 255, .7);
  margin-top: 4px;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(201, 169, 106, .4);
}
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  background: rgba(14, 42, 71, .08);
  margin-bottom: 20px;
  transition: all var(--transition);
}
.card:hover .card-icon {
  background: rgba(201, 169, 106, .18);
}
.card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.4;
}
.card p {
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* Category cards with images */
.cat-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.cat-card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.cat-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.cat-card:hover .cat-card-image img {
  transform: scale(1.05);
}
.cat-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(9, 29, 51, .45), transparent);
}
.cat-card-body {
  padding: 30px;
  position: relative;
}
.cat-card-body h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.cat-card-body p {
  font-size: 15px;
  color: var(--text-weak);
  margin-bottom: 20px;
}
.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
}
.cat-link::after {
  content: '→';
  transition: transform var(--transition);
}
.cat-link:hover::after {
  transform: translateX(4px);
}

/* News list */
.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 28px 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(201, 169, 106, .4);
}
.news-tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(14, 42, 71, .08);
  padding: 4px 12px;
  border-radius: 50px;
}
.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.5;
  transition: color var(--transition);
}
.news-card:hover h3 {
  color: var(--accent);
}
.news-card p {
  font-size: 14px;
  color: var(--text-weak);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-date {
  font-size: 13px;
  color: #9aa7b4;
  margin-top: auto;
}
.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--bg-white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px;
  color: var(--text-weak);
  font-size: 15px;
}

/* Steps / Process */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: step;
}
.step-item {
  position: relative;
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.step-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-weak);
}

/* Feature split */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  position: relative;
}
.split-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.split-content h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 16px;
}
.split-content p {
  color: var(--text-weak);
  font-size: 16px;
  margin-bottom: 16px;
}
.check-list {
  margin-top: 24px;
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text);
}
.check-list li::before {
  content: '✓';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(201, 169, 106, .2);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover {
  border-color: rgba(201, 169, 106, .4);
}
.faq-item summary {
  cursor: pointer;
  padding: 24px 28px;
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item[open] summary { color: var(--accent); }
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item .faq-body {
  padding: 0 28px 24px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.7;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  color: #fff;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9, 29, 51, .92), rgba(14, 42, 71, .85));
}
.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
}
.cta-inner p {
  font-size: 17px;
  color: rgba(255, 255, 255, .85);
  margin-top: 16px;
}
.cta-inner .btn-wrap {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, .7);
  padding: 80px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .logo {
  color: #fff;
  font-size: 22px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, .55);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, .55);
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: var(--accent);
}
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, .4);
}
.footer-bottom a {
  color: rgba(255, 255, 255, .5);
  transition: color var(--transition);
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* Responsive */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .split-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 72px 0; }
  .hero h1 { font-size: 42px; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-white);
    padding: 24px;
    box-shadow: 0 20px 40px rgba(9, 29, 51, .12);
    border-bottom: 1px solid var(--border);
    gap: 20px;
    align-items: flex-start;
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
    z-index: 99;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle { display: block; }
  .hero { min-height: 520px; padding: 80px 0; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
  .hero-stats { gap: 24px; }
  .section-title { font-size: 28px; }
  .card-grid, .card-grid.two, .card-grid.four { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-inner h2 { font-size: 30px; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 28px; }
  .hero-badge { font-size: 12px; padding: 6px 14px; }
  .btn { padding: 12px 24px; font-size: 14px; }
  .section { padding: 56px 0; }
  .logo { font-size: 17px; }
  .split-image img { height: 260px; }
}

/* roulang page: category1 */
:root {
            --primary: #1a2b4c;
            --primary-light: #2a3f66;
            --primary-dark: #0e1a2e;
            --accent: #c9a96a;
            --accent-hover: #b8944f;
            --bg: #f7f8fa;
            --bg-alt: #eef1f5;
            --bg-white: #ffffff;
            --text: #1a2b4c;
            --text-light: #6b7a90;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(26, 43, 76, 0.06);
            --shadow: 0 8px 30px rgba(26, 43, 76, 0.1);
            --shadow-lg: 0 16px 48px rgba(26, 43, 76, 0.12);
            --transition: 0.3s ease;
            --spacing-section: 80px;
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", 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);
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input,
        textarea {
            font-family: inherit;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            outline: none;
            transition: border-color var(--transition);
            background: var(--bg-white);
        }
        input:focus,
        textarea:focus {
            border-color: var(--accent);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }
        .nav-wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            position: relative;
            padding: 6px 2px;
            line-height: 1.4;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 100px 0 90px;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 26, 46, 0.92) 0%, rgba(26, 43, 76, 0.78) 55%, rgba(201, 169, 106, 0.35) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            max-width: 720px;
            margin-bottom: 18px;
        }
        .page-hero p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
            line-height: 1.8;
        }
        .page-hero .hero-cta {
            margin-top: 34px;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 106, 0.35);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            color: var(--accent);
            text-transform: uppercase;
            background: rgba(201, 169, 106, 0.12);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 1.02rem;
            line-height: 1.7;
        }
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .entry-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 38px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 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: opacity var(--transition);
        }
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(201, 169, 106, 0.4);
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-card .icon-wrap {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(26, 43, 76, 0.08), rgba(201, 169, 106, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 22px;
        }
        .entry-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .entry-card p {
            font-size: 0.93rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .steps-section {
            background: var(--primary);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .steps-section .section-head h2 {
            color: #fff;
        }
        .steps-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }
        .steps-section .section-head .eyebrow {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 2;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            padding: 30px 24px;
            backdrop-filter: blur(6px);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.13);
            transform: translateY(-4px);
        }
        .step-num {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1;
            color: var(--accent);
            margin-bottom: 18px;
            opacity: 0.9;
        }
        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.65;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .feature-card .feature-img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .feature-card:hover .feature-img img {
            transform: scale(1.05);
        }
        .feature-card .feature-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 43, 76, 0.4), transparent);
        }
        .feature-card .feature-body {
            padding: 26px 24px;
        }
        .feature-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-card h3 i {
            color: var(--accent);
            font-size: 1rem;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .notes-list {
            max-width: 880px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .note-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px 26px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
        }
        .note-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(201, 169, 106, 0.35);
        }
        .note-item .note-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(201, 169, 106, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .note-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .note-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.65;
        }
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item details {
            padding: 0;
        }
        .faq-item summary {
            padding: 22px 26px;
            font-size: 1.04rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 26px 22px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(201, 169, 106, 0.08);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 30px;
            font-size: 1.02rem;
        }
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr 0.8fr;
            gap: 44px;
            margin-bottom: 48px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 60px;
            }
            .entry-grid,
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .nav-links {
                gap: 20px;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-12px);
                opacity: 0;
                pointer-events: none;
                transition: all 0.3s ease;
                box-shadow: 0 16px 32px rgba(26, 43, 76, 0.08);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 10px 0;
                font-size: 1rem;
                width: 100%;
                border-bottom: 1px solid var(--bg-alt);
            }
            .nav-links a:last-child {
                border-bottom: none;
            }
            .nav-links a::after {
                display: none;
            }
            .nav-links a.active {
                color: var(--accent);
            }
            .page-hero {
                padding: 72px 0 64px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .entry-grid,
            .feature-grid,
            .steps-grid,
            .notes-list {
                grid-template-columns: 1fr;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 0.95rem;
                max-width: 220px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .nav-wrap {
                padding: 0 16px;
                height: 64px;
            }
            .nav-links {
                top: 64px;
            }
            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero h1 {
                font-size: 1.55rem;
            }
            .page-hero .hero-badge {
                font-size: 0.75rem;
            }
            .section-head h2 {
                font-size: 1.35rem;
            }
            .entry-card {
                padding: 26px 20px;
            }
            .feature-card .feature-img {
                height: 160px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #0b2b4f;
  --primary-light: #14467a;
  --primary-dark: #071d36;
  --accent: #c9a86a;
  --accent-light: #e2c98e;
  --accent-dark: #a98b4e;
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1a2332;
  --text-weak: #5a6a7a;
  --text-light: #8a95a3;
  --border: #e5e9ef;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(11, 43, 79, 0.07);
  --shadow-lg: 0 18px 55px rgba(11, 43, 79, 0.12);
  --transition: .3s ease;
  --container: 1200px;
  --space: 96px;
}

/* ===== 基础 reset ===== */
*, *::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", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; }

/* ===== 容器 ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary);
  white-space: nowrap;
  transition: color var(--transition);
}
.logo:hover { color: var(--primary-light); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  padding: 8px 2px;
  transition: color var(--transition);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  cursor: pointer;
  position: relative;
  transition: border-color var(--transition);
}
.nav-toggle:hover { border-color: var(--accent); }
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 2px;
  transition: transform var(--transition);
}
.nav-toggle span { top: 50%; transform: translate(-50%, -50%); }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ===== 文章 Hero ===== */
.page-hero {
  position: relative;
  padding: 84px 0 76px;
  background: linear-gradient(120deg, rgba(7, 29, 54, 0.94), rgba(11, 43, 79, 0.85)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  text-align: center;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 20px;
}
.breadcrumb a {
  color: var(--accent-light);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: #fff; }
.crumb-sep { color: rgba(255, 255, 255, 0.35); }
.crumb-current {
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.35;
  max-width: 860px;
  margin: 0 auto 20px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 6px 16px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.meta-icon { font-style: normal; }

/* ===== 正文区 ===== */
.article-section {
  padding: var(--space) 0;
  background: var(--bg);
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}
.article-main {
  min-width: 0;
}
.article-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(229, 233, 239, 0.8);
}
.article-body {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--text);
  word-break: break-word;
}
.article-body h2 {
  font-size: 1.55rem;
  margin: 36px 0 16px;
  color: var(--primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.2rem;
  margin: 28px 0 12px;
  color: var(--primary);
  line-height: 1.45;
}
.article-body h4 {
  font-size: 1.05rem;
  margin: 24px 0 10px;
  color: var(--text);
}
.article-body p {
  margin-bottom: 20px;
}
.article-body a {
  color: var(--primary-light);
  border-bottom: 1px solid rgba(20, 70, 122, 0.3);
  transition: all var(--transition);
}
.article-body a:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
}
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin: 24px 0;
}
.article-body ul,
.article-body ol {
  padding-left: 22px;
  margin-bottom: 20px;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 6px; }
.article-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  background: var(--bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--text-weak);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-body th {
  background: var(--bg);
  color: var(--primary);
  font-weight: 600;
}
.article-body code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 0.9em;
  font-family: "SFMono-Regular", Consolas, monospace;
}

/* ===== 标签区 ===== */
.tag-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tag-label {
  font-size: 0.88rem;
  color: var(--text-weak);
}
.tag {
  display: inline-block;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-weak);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 0.8rem;
  transition: all var(--transition);
}
.tag:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: rgba(201, 168, 106, 0.08);
}

/* ===== 文章底部导航 ===== */
.article-nav {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

/* ===== 侧边栏 ===== */
.article-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 100px;
}
.side-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(229, 233, 239, 0.8);
  transition: transform var(--transition), box-shadow var(--transition);
}
.side-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.side-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.side-card ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.side-card ul a {
  color: var(--text-weak);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.92rem;
  transition: all var(--transition);
}
.side-card ul a:hover {
  color: var(--primary);
  background: var(--bg);
  padding-left: 14px;
}
.side-card p {
  font-size: 0.9rem;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 48px 20px;
}
.not-found-icon {
  font-size: 3rem;
  font-weight: 800;
  color: var(--border);
  letter-spacing: 0.08em;
  line-height: 1;
  margin-bottom: 12px;
}
.not-found h2 {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 10px;
}
.not-found p {
  color: var(--text-weak);
  margin-bottom: 24px;
}

/* ===== 相关阅读 ===== */
.related-section {
  padding: var(--space) 0;
  background: var(--card);
  border-top: 1px solid var(--border);
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.section-head::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  margin: 16px auto 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.related-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201, 168, 106, 0.5);
}
.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover img {
  transform: scale(1.04);
}
.related-body {
  padding: 24px;
}
.related-body h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.5;
}
.related-body p {
  font-size: 0.875rem;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 12px;
}
.more-link {
  display: inline-block;
  color: var(--accent-dark);
  font-weight: 600;
  font-size: 0.88rem;
  transition: color var(--transition);
}
.more-link:hover {
  color: var(--accent);
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--space) 0;
  background: var(--bg);
}
.faq-section .container {
  max-width: 860px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 40px;
}
.faq-item {
  background: var(--card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 24px 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item:hover {
  border-color: rgba(201, 168, 106, 0.45);
  box-shadow: var(--shadow);
}
.faq-item details summary {
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item details summary::-webkit-details-marker { display: none; }
.faq-item details summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--accent);
  transition: transform 0.3s ease;
  line-height: 1;
}
.faq-item details[open] summary::after { transform: rotate(45deg); }
.faq-item details p {
  margin-top: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  font-size: 0.925rem;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: var(--space) 0;
  background: linear-gradient(120deg, rgba(7, 29, 54, 0.92), rgba(11, 43, 79, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  text-align: center;
  color: #fff;
}
.cta-section h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-section p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 640px;
  margin: 0 auto 36px;
  font-size: 1rem;
  line-height: 1.8;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn:hover {
  background: var(--accent-light);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(201, 168, 106, 0.35);
}
.btn:focus-visible {
  outline: 3px solid rgba(201, 168, 106, 0.4);
  outline-offset: 2px;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: rgba(201, 168, 106, 0.08);
  box-shadow: none;
}
.btn-light {
  background: #fff;
  color: var(--primary);
}
.btn-light:hover {
  background: rgba(255, 255, 255, 0.85);
  color: var(--primary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 16px;
  display: inline-block;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 340px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-bottom {
  padding-top: 32px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-side {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .side-card {
    flex: 1;
    min-width: 240px;
  }
}

@media (max-width: 768px) {
  :root {
    --space: 64px;
    --radius: 14px;
  }
  .nav-toggle {
    display: block;
  }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--card);
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 99;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    text-align: center;
    padding: 14px 0;
    font-size: 1rem;
  }
  .nav-links a::after {
    display: none;
  }
  .nav-links a.active {
    color: var(--accent-dark);
  }
  .page-hero {
    padding: 60px 0 52px;
  }
  .article-card {
    padding: 28px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  :root {
    --space: 48px;
  }
  .container {
    padding: 0 16px;
  }
  .nav-wrap {
    padding: 0 16px;
  }
  .logo {
    font-size: 1.05rem;
  }
  .article-card {
    padding: 20px;
  }
  .page-hero h1 {
    font-size: 1.4rem;
  }
  .article-meta {
    gap: 10px;
  }
  .meta-item {
    padding: 5px 12px;
    font-size: 0.8rem;
  }
  .article-nav {
    flex-direction: column;
  }
  .article-nav .btn {
    width: 100%;
  }
  .related-body {
    padding: 20px;
  }
  .faq-item {
    padding: 18px 20px;
  }
  .btn {
    padding: 13px 24px;
    font-size: 0.9rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .cta-section p {
    font-size: 0.92rem;
  }
}