/* roulang page: index */
:root {
  --brand: #059669;
  --brand-dark: #047857;
  --brand-light: #d1fae5;
  --accent: #f59e0b;
  --dark: #0f172a;
  --text: #1e293b;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --border: #e2e8f0;
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --shadow: 0 8px 30px rgba(2, 6, 23, 0.08);
  --shadow-lg: 0 20px 45px rgba(2, 6, 23, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background: #fff;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { font-family: inherit; }
.container-custom { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.65);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(2, 6, 23, 0.07); }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--dark); letter-spacing: -0.01em; }
.logo-icon {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, #10b981 0%, #047857 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 10px;
  transition: var(--transition);
}
.nav-link:hover { color: var(--brand); background: rgba(5, 150, 105, 0.08); }
.nav-link.active { color: var(--brand); font-weight: 600; background: rgba(5, 150, 105, 0.1); }
.nav-link.active::after {
  content: '';
  position: absolute; bottom: 3px; left: 50%; transform: translateX(-50%);
  width: 18px; height: 2px; background: var(--brand); border-radius: 2px;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff; padding: 14px 30px; border-radius: 12px;
  font-size: 15px; font-weight: 600;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.3);
  transition: var(--transition); border: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(5, 150, 105, 0.4);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff; padding: 14px 30px; border-radius: 12px;
  font-size: 15px; font-weight: 600;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
  color: #fff;
}
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--brand); color: var(--brand);
  padding: 13px 26px; border-radius: 12px;
  font-size: 14px; font-weight: 600;
  transition: var(--transition);
}
.btn-outline:hover { background: rgba(5, 150, 105, 0.08); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-primary:focus-visible, .btn-secondary:focus-visible, .btn-outline:focus-visible,
.nav-link:focus-visible {
  outline: 3px solid rgba(5, 150, 105, 0.4);
  outline-offset: 2px;
}

.hero { position: relative; min-height: 88vh; display: flex; align-items: center; overflow: hidden; padding: 120px 0 80px; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; z-index: 0; }
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(135deg, rgba(2, 44, 34, 0.88) 0%, rgba(6, 78, 59, 0.76) 50%, rgba(2, 6, 23, 0.6) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 780px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff; font-size: 14px; font-weight: 500;
  backdrop-filter: blur(10px);
}
.hero h1 {
  color: #fff; font-size: 52px; line-height: 1.12;
  font-weight: 800; letter-spacing: -0.03em; margin-top: 24px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, #34d399, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc { color: rgba(255, 255, 255, 0.82); font-size: 18px; line-height: 1.75; margin-top: 20px; max-width: 560px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 36px; }

.section { padding: 96px 0; }
.section-light { background: var(--bg-light); }
.section-white { background: #fff; }
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; background: var(--brand-light);
  color: var(--brand-dark); border-radius: 999px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.3px;
}
.section-title { font-size: 36px; font-weight: 800; color: var(--dark); letter-spacing: -0.02em; margin: 16px 0 12px; line-height: 1.25; }
.section-subtitle { font-size: 16px; color: var(--text-muted); line-height: 1.7; max-width: 640px; }

.stat-number { font-size: 44px; font-weight: 800; color: var(--dark); line-height: 1.1; letter-spacing: -0.02em; }
.stat-label { color: var(--text-muted); font-size: 14px; margin-top: 8px; }

.feature-card {
  background: #fff; border-radius: 20px;
  border: 1px solid var(--border);
  padding: 32px 28px; height: 100%;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(5, 150, 105, 0.25);
}
.icon-wrap { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 20px; }
.feature-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

.category-card { position: relative; border-radius: 24px; overflow: hidden; min-height: 380px; display: flex; align-items: flex-end; }
.category-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(2, 6, 23, 0.85) 0%, transparent 60%);
}
.category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.category-card:hover img { transform: scale(1.06); }
.category-card .content { position: relative; z-index: 2; padding: 32px; }
.category-card h3 { color: #fff; font-size: 22px; font-weight: 700; }
.category-card p { color: rgba(255, 255, 255, 0.75); font-size: 14px; margin-top: 6px; }
.category-card .go-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: #34d399; font-size: 14px; font-weight: 500; margin-top: 14px;
}
.category-card:hover .go-link { gap: 12px; }

.article-card {
  background: #fff; border-radius: 18px;
  border: 1px solid var(--border);
  padding: 28px; display: block; height: 100%;
  transition: var(--transition);
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(5, 150, 105, 0.3);
}
.article-tag {
  display: inline-block; padding: 4px 12px;
  background: var(--brand-light); color: var(--brand-dark);
  border-radius: 999px; font-size: 12px; font-weight: 600;
}
.article-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); line-height: 1.5; margin: 14px 0 10px; }
.article-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.article-card .read-more { display: flex; align-items: center; gap: 6px; color: var(--brand); font-size: 14px; font-weight: 600; margin-top: 16px; }
.article-card:hover .read-more i { transform: translateX(4px); }
.article-card .read-more i { transition: transform 0.3s ease; }

.step-item {
  position: relative; text-align: center;
  padding: 36px 20px; background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px; height: 100%;
  transition: var(--transition);
}
.step-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.step-num {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, #10b981, #047857);
  color: #fff; font-weight: 700; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
}
.step-item h3 { font-size: 17px; font-weight: 700; color: var(--dark); }
.step-item p { font-size: 13px; color: var(--text-muted); margin-top: 8px; line-height: 1.6; }
.step-arrow {
  position: absolute; top: 50%; right: -22px;
  transform: translateY(-50%);
  width: 36px; height: 36px; border-radius: 50%;
  background: #fff; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--brand); font-size: 14px; z-index: 2;
  box-shadow: 0 2px 8px rgba(2, 6, 23, 0.08);
}
@media (max-width: 768px) { .step-arrow { display: none; } }

.faq-item {
  background: #fff; border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { box-shadow: var(--shadow); border-color: rgba(5, 150, 105, 0.3); }
.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 24px; font-size: 16px; font-weight: 600;
  color: var(--dark); width: 100%; text-align: left;
  transition: var(--transition);
}
.faq-question:hover { color: var(--brand); }
.faq-icon { font-size: 14px; color: var(--text-muted); transition: transform 0.35s ease, color 0.3s ease; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-icon { transform: rotate(180deg); color: var(--brand); }
.faq-answer {
  max-height: 0; overflow: hidden;
  padding: 0 24px;
  transition: max-height 0.45s ease, padding 0.45s ease;
}
.faq-item.open .faq-answer { max-height: 320px; padding: 0 24px 22px; }
.faq-answer p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }

.cta-section { position: relative; padding: 110px 0; overflow: hidden; }
.cta-bg-img { position: absolute; inset: 0; }
.cta-bg-img img { width: 100%; height: 100%; object-fit: cover; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(4, 47, 44, 0.92), rgba(2, 44, 34, 0.85)); }

.site-footer { background: #0f172a; color: #94a3b8; padding: 64px 0 32px; }
.site-footer a { color: #94a3b8; }
.site-footer a:hover { color: #fff; }
.footer-title { color: #f1f5f9; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-social a {
  width: 42px; height: 42px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--brand); color: #fff; transform: translateY(-3px); }

.mobile-menu {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s ease;
  border-top: 0 solid rgba(226, 232, 240, 0.4);
}
.mobile-menu.open { max-height: 400px; border-top-width: 1px; }
.mobile-link {
  display: block; padding: 14px 24px;
  font-size: 15px; font-weight: 500; color: var(--text);
  border-bottom: 1px solid rgba(226, 232, 240, 0.4);
}
.mobile-link:hover { background: var(--bg-light); color: var(--brand); }
.mobile-link.active { color: var(--brand); font-weight: 600; background: rgba(5, 150, 105, 0.06); }

.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .section { padding: 80px 0; }
}
@media (max-width: 768px) {
  .hero { min-height: 78vh; padding: 100px 0 60px; }
  .hero h1 { font-size: 34px; }
  .hero-desc { font-size: 16px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .stat-number { font-size: 32px; }
  .container-custom { padding: 0 18px; }
}
@media (max-width: 520px) {
  .hero { min-height: auto; padding: 90px 0 50px; }
  .hero h1 { font-size: 30px; }
  .btn-primary, .btn-secondary { padding: 12px 20px; font-size: 14px; }
  .feature-card { padding: 24px 20px; }
  .section-title { font-size: 26px; }
}

/* roulang page: category1 */
:root {
    --color-primary: #10b981;
    --color-primary-dark: #059669;
    --color-primary-light: #34d399;
    --color-dark-bg: #050c0a;
    --color-card-bg: #0b1712;
    --color-text: #e2e8f0;
    --color-text-muted: #64748b;
    --color-border: rgba(148, 163, 184, 0.12);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 12px 40px rgba(16, 185, 129, 0.15);
  }

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

  html { scroll-behavior: smooth; }

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

  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
  button { cursor: pointer; border: none; background: none; font-family: inherit; }

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

  /* 导航 */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(5, 12, 10, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link {
    font-size: 15px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 8px;
    color: #94a3b8;
    transition: all 0.3s ease;
    position: relative;
  }

  .nav-link:hover {
    color: var(--color-primary-light);
    background: rgba(16, 185, 129, 0.08);
  }

  .nav-link.active {
    color: var(--color-primary-light);
    background: rgba(16, 185, 129, 0.12);
  }

  .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 4px;
  }

  .logo-text {
    font-size: 22px;
    font-weight: 800;
    background: linear-gradient(135deg, #34d399 0%, #10b981 40%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff !important;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 22px;
    border-radius: 9999px;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
    transition: all 0.3s ease;
    border: none;
  }

  .nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.45);
  }

  .mobile-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    color: #e2e8f0;
    font-size: 18px;
    transition: background 0.3s;
  }

  .mobile-menu-btn:hover {
    background: rgba(16, 185, 129, 0.1);
  }

  .mobile-menu {
    display: none;
    background: rgba(5, 12, 10, 0.98);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
  }

  .mobile-menu.open { display: block; }

  .mobile-menu a {
    display: block;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    color: #94a3b8;
    transition: all 0.3s;
  }

  .mobile-menu a:hover { color: var(--color-primary-light); background: rgba(16, 185, 129, 0.06); }
  .mobile-menu a.active { color: var(--color-primary-light); }

  /* 板块通用 */
  .section-padding { padding: 80px 0; }

  .section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
  }

  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: var(--color-primary-light);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 9999px;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    text-transform: uppercase;
  }

  .section-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.3;
    color: #f1f5f9;
    margin-bottom: 16px;
  }

  .section-desc {
    font-size: 16px;
    color: var(--color-text-muted);
    line-height: 1.7;
  }

  /* 卡片 */
  .guide-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s ease;
    height: 100%;
  }

  .guide-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(16, 185, 129, 0.3);
  }

  .guide-card-img {
    position: relative;
    height: 210px;
    overflow: hidden;
  }

  .guide-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
  }

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

  .guide-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(5, 12, 10, 0.7), transparent 60%);
  }

  .guide-card-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    background: rgba(16, 185, 129, 0.9);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 9999px;
    backdrop-filter: blur(4px);
  }

  .guide-card-body { padding: 24px; }

  .guide-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 10px;
    line-height: 1.4;
  }

  .guide-card-title:hover { color: var(--color-primary-light); }

  .guide-card-text {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .guide-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: #475569;
  }

  .guide-card-meta span { display: flex; align-items: center; gap: 6px; }

  /* 大卡 feature */
  .feature-section {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(5, 12, 10, 0.02));
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
  }

  /* 排行列表 */
  .rank-list {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all 0.3s ease;
    height: 100%;
  }

  .rank-list:hover {
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: var(--shadow-card);
  }

  .rank-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  }

  .rank-item:last-child { border-bottom: none; }

  .rank-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-primary-light);
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .rank-item:first-child .rank-num {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
  }

  .rank-item:nth-child(2) .rank-num {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: #fff;
  }

  .rank-item:nth-child(3) .rank-num {
    background: linear-gradient(135deg, #b45309, #92400e);
    color: #fff;
  }

  .rank-info { flex: 1; }

  .rank-name {
    font-size: 15px;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 4px;
  }

  .rank-tag {
    display: inline-block;
    font-size: 12px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-primary-light);
    padding: 2px 10px;
    border-radius: 9999px;
    margin-left: 8px;
  }

  .rank-score {
    font-size: 13px;
    color: var(--color-text-muted);
  }

  /* FAQ */
  .faq-item {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 16px;
    transition: all 0.3s ease;
  }

  .faq-item:hover {
    border-color: rgba(16, 185, 129, 0.25);
  }

  .faq-q {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 17px;
    font-weight: 600;
    color: #e2e8f0;
    cursor: pointer;
    margin-bottom: 8px;
  }

  .faq-q i {
    color: var(--color-primary);
    font-size: 14px;
    margin-top: 6px;
    flex-shrink: 0;
  }

  .faq-a {
    padding-left: 28px;
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.8;
  }

  /* CTA */
  .cta-block {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(5, 12, 10, 0.8)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    border-radius: 24px;
    padding: 64px 48px;
    text-align: center;
    border: 1px solid rgba(16, 185, 129, 0.2);
    position: relative;
    overflow: hidden;
  }

  .cta-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(5, 12, 10, 0.7);
    border-radius: 24px;
  }

  .cta-block > * { position: relative; z-index: 1; }

  .cta-title {
    font-size: 32px;
    font-weight: 800;
    color: #f1f5f9;
    margin-bottom: 16px;
  }

  .cta-desc {
    font-size: 16px;
    color: #94a3b8;
    max-width: 520px;
    margin: 0 auto 32px;
  }

  /* 按钮 */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff !important;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 9999px;
    box-shadow: 0 4px 24px rgba(16, 185, 129, 0.35);
    transition: all 0.3s ease;
    border: none;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 36px rgba(16, 185, 129, 0.5);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--color-primary-light) !important;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 9999px;
    border: 1px solid rgba(16, 185, 129, 0.4);
    transition: all 0.3s ease;
  }

  .btn-outline:hover {
    background: rgba(16, 185, 129, 0.1);
    transform: translateY(-2px);
  }

  /* 步骤 */
  .step-item {
    text-align: center;
    padding: 32px 20px;
    position: relative;
  }

  .step-num {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
  }

  .step-title {
    font-size: 17px;
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 10px;
  }

  .step-desc {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
  }

  .step-arrow {
    position: absolute;
    top: 50%;
    right: -15px;
    transform: translateY(-50%);
    color: rgba(16, 185, 129, 0.4);
    font-size: 20px;
    z-index: 1;
  }

  /* Hero */
  .page-hero {
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    position: relative;
    padding: 100px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(5, 12, 10, 0.9) 40%, rgba(5, 12, 10, 0.6));
  }

  .page-hero > * { position: relative; z-index: 1; }

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #64748b;
    margin-bottom: 16px;
  }

  .breadcrumb a { color: var(--color-primary-light); }
  .breadcrumb a:hover { text-decoration: underline; }

  .page-hero-title {
    font-size: 44px;
    font-weight: 800;
    color: #f1f5f9;
    line-height: 1.3;
    margin-bottom: 16px;
  }

  .page-hero-desc {
    font-size: 17px;
    color: #94a3b8;
    max-width: 560px;
    line-height: 1.8;
  }

  /* 页脚 */
  .site-footer {
    background: #030806;
    border-top: 1px solid var(--color-border);
    padding: 64px 0 32px;
  }

  .footer-title {
    font-size: 16px;
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 16px;
  }

  .footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 16px;
    transition: all 0.3s ease;
  }

  .footer-social a:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3);
  }

  /* 数值统计 */
  .stat-num {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, #34d399, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
  }

  /* 流程对比 */
  .compare-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s ease;
  }

  .compare-card:hover {
    border-color: rgba(16, 185, 129, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
  }

  .compare-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: rgba(16, 185, 129, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--color-primary-light);
    margin-bottom: 20px;
  }

  /* 响应式 */
  @media (max-width: 1024px) {
    .section-padding { padding: 64px 0; }
    .page-hero { padding: 80px 0; }
    .page-hero-title { font-size: 36px; }
    .section-title { font-size: 30px; }
    .step-arrow { display: none; }
    .cta-block { padding: 48px 32px; }
    .cta-title { font-size: 28px; }
  }

  @media (max-width: 768px) {
    .desktop-nav { display: none !important; }
    .mobile-menu-btn { display: flex; }
    .mobile-menu { display: block; }
    .section-padding { padding: 48px 0; }
    .page-hero { padding: 64px 0; }
    .page-hero-title { font-size: 30px; }
    .section-title { font-size: 26px; }
    .section-head { margin-bottom: 40px; }
    .container-custom { padding: 0 16px; }
    .guide-card-img { height: 180px; }
    .cta-block { padding: 40px 20px; }
    .cta-title { font-size: 24px; }
    .stat-num { font-size: 32px; }
    .footer-social a { width: 36px; height: 36px; font-size: 14px; }
  }

  @media (max-width: 520px) {
    .logo-text { font-size: 18px; }
    .page-hero-title { font-size: 26px; }
    .section-title { font-size: 22px; }
    .section-desc { font-size: 14px; }
    .guide-card-title { font-size: 16px; }
    .rank-list { padding: 20px; }
    .compare-card { padding: 24px; }
    .btn-primary, .btn-outline { padding: 12px 24px; font-size: 14px; }
  }

/* roulang page: article */
:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --bg-dark: #0b1220;
    --bg-card: #121c35;
    --bg-card-hover: #1a2745;
    --text-main: #e2e8f0;
    --text-muted: #8ea0b5;
    --border-subtle: rgba(148, 163, 184, 0.12);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.35);
    --transition: 0.25s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
.container-custom {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 18, 32, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 78px;
    gap: 20px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
}
.brand-logo i { color: var(--primary); font-size: 24px; }
.brand-logo .brand-gradient {
    background: linear-gradient(135deg, #f0fdf4, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 10px;
    color: #cbd5e1;
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition);
}
.nav-link:hover {
    color: #fff;
    background: rgba(16, 185, 129, 0.12);
}
.nav-link.active {
    color: var(--primary);
    background: rgba(16, 185, 129, 0.15);
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff !important;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 22px;
    border-radius: 10px;
    box-shadow: 0 4px 18px rgba(16, 185, 129, 0.3);
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.4);
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: var(--primary) !important;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: 10px;
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-outline:hover {
    background: rgba(16, 185, 129, 0.12);
    border-color: var(--primary);
}
.mobile-menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-size: 18px;
    align-items: center;
    justify-content: center;
}
.mobile-menu-btn:hover { background: rgba(255, 255, 255, 0.12); }
.mobile-nav {
    display: none;
    padding: 16px 24px 20px;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-dark);
}
.mobile-nav.open { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    color: #cbd5e1;
    font-weight: 500;
    transition: all var(--transition);
}
.mobile-nav a:hover { background: rgba(16, 185, 129, 0.12); color: #fff; }
.mobile-nav a.active { color: var(--primary); background: rgba(16, 185, 129, 0.15); }

/* ---------- Article Banner ---------- */
.article-banner {
    position: relative;
    padding: 80px 0 60px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.article-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11, 18, 32, 0.95), rgba(11, 18, 32, 0.65));
}
.article-banner .container-custom { position: relative; z-index: 1; }
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: rgba(148, 163, 184, 0.4); }
.breadcrumb .current { color: #e2e8f0; }
.article-banner h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    color: #fff;
    margin-bottom: 16px;
    max-width: 800px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    color: var(--text-muted);
    font-size: 14px;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-item i { color: var(--primary); }
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--primary) !important;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}

/* ---------- Article Main ---------- */
.article-main { padding: 48px 0 60px; }
.article-content-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 44px;
    box-shadow: var(--shadow-sm);
}
.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: #d1dae8;
    word-break: break-word;
}
.article-body p { margin-bottom: 1.4em; }
.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin: 2em 0 0.8em;
    padding-left: 14px;
    border-left: 4px solid var(--primary);
}
.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin: 1.6em 0 0.6em;
}
.article-body ul,
.article-body ol { margin: 0 0 1.4em 1.4em; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--primary); border-bottom: 1px solid rgba(16, 185, 129, 0.3); }
.article-body blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(16, 185, 129, 0.06);
    padding: 16px 24px;
    border-radius: 0 12px 12px 0;
    margin: 1.5em 0;
    color: #cbd5e1;
}
.article-body img { border-radius: var(--radius-md); margin: 1.5em 0; box-shadow: var(--shadow-sm); }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; }
.article-body th,
.article-body td { padding: 10px 14px; border: 1px solid var(--border-subtle); text-align: left; }
.article-body th { background: rgba(16, 185, 129, 0.08); color: #fff; }

.article-actions {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.share-links { display: flex; align-items: center; gap: 10px; }
.share-links .label { color: var(--text-muted); font-size: 14px; }
.share-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ---------- Sidebar ---------- */
.sidebar { display: flex; flex-direction: column; gap: 28px; }
.side-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}
.side-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 14px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border-subtle);
}
.side-card-title i { color: var(--primary); }
.info-list { list-style: none; }
.info-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(148, 163, 184, 0.1);
    font-size: 14px;
}
.info-list li:last-child { border-bottom: none; }
.info-list .label { color: var(--text-muted); }
.info-list .value { color: #e2e8f0; font-weight: 500; }
.side-link-list { list-style: none; }
.side-link-list li + li { margin-top: 12px; }
.side-link-list a {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: #cbd5e1;
    font-size: 14px;
    line-height: 1.5;
    padding: 10px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.02);
    transition: all var(--transition);
}
.side-link-list a:hover { background: rgba(16, 185, 129, 0.08); color: #fff; }
.side-link-list a i { color: var(--primary); font-size: 12px; margin-top: 5px; }
.side-link-list .list-date { display: block; font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.side-cta-card {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(11, 18, 32, 0.8));
    border: 1px solid rgba(16, 185, 129, 0.25);
}
.side-cta-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.side-cta-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 18px; }

/* ---------- Not Found ---------- */
.not-found-card {
    text-align: center;
    padding: 60px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
}
.not-found-card .icon { font-size: 56px; color: var(--primary); margin-bottom: 20px; }
.not-found-card h1 { font-size: 28px; font-weight: 700; margin-bottom: 12px; color: #fff; }
.not-found-card p { color: var(--text-muted); margin-bottom: 24px; }

/* ---------- Related Section ---------- */
.related-section { padding: 64px 0; }
.related-bg {
    background: linear-gradient(180deg, var(--bg-dark), #101a33 50%, var(--bg-dark));
}
.section-header { text-align: center; margin-bottom: 44px; }
.section-header .tag-line {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 10px;
}
.section-header h2 { font-size: 30px; font-weight: 800; color: #fff; }
.section-header p { color: var(--text-muted); font-size: 15px; margin-top: 10px; }
.article-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition);
    height: 100%;
}
.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(16, 185, 129, 0.3);
}
.article-card .cover {
    height: 180px;
    overflow: hidden;
    position: relative;
}
.article-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.article-card:hover .cover img { transform: scale(1.05); }
.article-card .card-body { padding: 22px; }
.article-card .card-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.article-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: #fff;
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-card .card-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.time-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); }
.time-badge i { color: var(--primary); }

/* ---------- CTA ---------- */
.cta-section { padding: 20px 0 72px; }
.cta-card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #121c35, #0a1628);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    box-shadow: var(--shadow-md);
}
.cta-card::before {
    content: "";
    position: absolute;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.25), transparent 70%);
    top: -80px;
    right: -40px;
    border-radius: 50%;
}
.cta-card h2 { font-size: 26px; font-weight: 800; color: #fff; margin-bottom: 10px; }
.cta-card p { color: var(--text-muted); font-size: 15px; }
.cta-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; position: relative; z-index: 1; }

/* ---------- Footer ---------- */
.site-footer {
    background: #0a101f;
    border-top: 1px solid var(--border-subtle);
    padding: 56px 0 24px;
}
.footer-title {
    font-size: 16px;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .main-nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .cta-card { flex-direction: column; text-align: center; padding: 40px 28px; }
    .cta-actions { justify-content: center; }
}
@media (max-width: 768px) {
    .article-banner { padding: 48px 0 40px; background-attachment: scroll; }
    .article-banner h1 { font-size: 24px; }
    .article-content-card { padding: 24px; }
    .article-main { padding: 32px 0 40px; }
    .related-section { padding: 40px 0; }
    .section-header h2 { font-size: 24px; }
    .cta-card { padding: 32px 24px; }
}
@media (max-width: 520px) {
    .container-custom { padding-left: 16px; padding-right: 16px; }
    .article-content-card { padding: 20px; }
    .brand-logo span { font-size: 18px; }
    .article-card .cover { height: 150px; }
    .header-inner { height: 68px; }
}