/* roulang page: index */
:root {
  --primary: #4A7BA6;
  --primary-dark: #3D688F;
  --primary-soft: #EAF1F6;
  --accent: #C9A86A;
  --accent-dark: #B3925A;
  --bg: #F5F6F8;
  --card: #FFFFFF;
  --text: #1E2A32;
  --text-2: #5A6B7B;
  --text-3: #8A97A5;
  --border: #E2E6EA;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 24px rgba(30, 42, 50, 0.06);
  --shadow-hover: 0 12px 32px rgba(30, 42, 50, 0.12);
  --section-space: 96px;
  --header-h: 64px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { text-decoration: none; color: inherit; transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: 'Noto Serif SC', Georgia, 'Times New Roman', serif; line-height: 1.4; color: var(--text); font-weight: 600; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
.row { max-width: 75rem; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-space) 0; }
#download { scroll-margin-top: 80px; }

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 500;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.btn:focus-visible { outline: 3px solid rgba(74, 123, 166, 0.35); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(74, 123, 166, 0.25); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-secondary { background: #fff; border-color: var(--primary); color: var(--primary); }
.btn-secondary:hover { background: var(--primary-soft); }
.btn-light { background: #fff; color: var(--text); }
.btn-light:hover { background: var(--primary-soft); transform: translateY(-2px); }
.btn-download-group { display: flex; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
}
.btn-download:hover { border-color: var(--primary); color: var(--primary); }
.btn-download i { font-size: 18px; }

/* tags */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 2px 10px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

/* header */
.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);
  height: var(--header-h);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.logo {
  font-family: 'Noto Serif SC', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.02em;
}
.logo .logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; }
.logo:hover { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 2px;
  position: relative;
  letter-spacing: 0.02em;
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.25s ease;
}
.nav a:hover { color: var(--primary); }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav a.active { color: var(--primary); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text);
  padding: 8px;
  border-radius: var(--radius-sm);
}
.nav-toggle:hover { background: var(--bg); }
.nav-toggle:focus-visible { outline: 3px solid rgba(74, 123, 166, 0.35); }

/* hero */
.hero { background: #fff; padding: 88px 0 80px; overflow: hidden; }
.hero-row { display: flex; align-items: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 24px;
}
.hero-badge i { font-size: 12px; }
.hero h1 { font-size: 44px; line-height: 1.35; color: var(--text); margin-bottom: 20px; }
.hero h1 .brand-em { color: var(--accent); }
.hero-sub { font-size: 16px; color: var(--text-2); max-width: 460px; margin-bottom: 34px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-note { font-size: 13px; color: var(--text-3); margin-top: 20px; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-hover); }
.hero-visual-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(30, 42, 50, 0.88);
  color: #fff;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #5FC79E; box-shadow: 0 0 8px rgba(95, 199, 158, 0.8); display: inline-block; }

/* trust bar */
.trust-bar { background: var(--bg); padding: 40px 0; border-bottom: 1px solid var(--border); }
.trust-item { display: flex; align-items: center; gap: 16px; padding: 12px 8px; }
.trust-item i { font-size: 28px; color: var(--primary); width: 48px; height: 48px; display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; background: var(--primary-soft); flex-shrink: 0; }
.trust-item strong { display: block; font-size: 16px; font-weight: 500; color: var(--text); line-height: 1.4; }
.trust-item span { font-size: 13px; color: var(--text-3); }

/* section headings */
.section-head { margin-bottom: 44px; }
.section-head h2 { font-size: 32px; padding-left: 16px; position: relative; margin-bottom: 10px; }
.section-head h2::before { content: ''; position: absolute; left: 0; top: 8px; width: 4px; height: 24px; border-radius: 4px; background: var(--accent); }
.section-head .section-intro { margin: 0 0 0 16px; color: var(--text-2); font-size: 16px; }

/* features slider */
.features-section { background: #fff; }
.feature-slider { position: relative; }
.feature-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 20px 4px 32px;
}
.feature-track::-webkit-scrollbar { display: none; }
.feature-card {
  flex: 0 0 340px;
  scroll-snap-align: start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.feature-img { width: 100%; height: 200px; overflow: hidden; }
.feature-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.feature-card:hover .feature-img img { transform: scale(1.04); }
.feature-body { padding: 22px 22px 26px; }
.feature-body h3 { font-size: 18px; margin-bottom: 8px; }
.feature-body p { font-size: 14px; color: var(--text-2); line-height: 1.7; }
.slider-btn {
  position: absolute;
  top: 34%;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  z-index: 5;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.slider-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: scale(1.06); }
.slider-btn:focus-visible { outline: 3px solid rgba(74, 123, 166, 0.35); }
.slider-prev { left: -16px; }
.slider-next { right: -16px; }

/* journey dark */
.journey-section {
  background: linear-gradient(135deg, rgba(30, 42, 50, 0.97), rgba(30, 42, 50, 0.9)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: #fff;
}
.journey-section .section-head h2 { color: #fff; }
.journey-section .section-head .section-intro { color: rgba(255, 255, 255, 0.7); }
.journey-steps { display: flex; align-items: flex-start; gap: 0; flex-wrap: wrap; }
.journey-step { flex: 1; min-width: 180px; text-align: center; padding: 16px; }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(201, 168, 106, 0.15);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
  font-family: 'Noto Serif SC', serif;
  margin-bottom: 16px;
  box-shadow: 0 0 20px rgba(201, 168, 106, 0.15);
}
.journey-step h3 { color: #fff; font-size: 18px; margin-bottom: 6px; }
.journey-step p { color: rgba(255, 255, 255, 0.65); font-size: 14px; line-height: 1.7; }
.step-line {
  flex: 0 0 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), rgba(201, 168, 106, 0.25));
  margin-top: 44px;
  position: relative;
}
.step-line::after {
  content: '';
  position: absolute;
  right: -3px;
  top: -3px;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  transform: rotate(45deg);
}

/* requirements */
.req-section { background: var(--bg); }
.req-list { margin-top: 8px; }
.req-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--border);
}
.req-list li:last-child { border-bottom: none; }
.req-list i { font-size: 20px; color: var(--primary); width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; background: var(--primary-soft); flex-shrink: 0; margin-top: 2px; }
.req-list strong { display: block; font-size: 16px; color: var(--text); font-weight: 500; }
.req-list span { font-size: 14px; color: var(--text-2); }
.req-visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow); }

/* testimonials */
.testimonials-section { background: #fff; }
.review-card {
  background: #F8FAFC;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.review-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.review-card.offset-card { margin-top: 16px; }
@media (min-width: 769px) {
  .review-card.offset-card { margin-top: 32px; }
}
.stars { color: var(--accent); font-size: 16px; letter-spacing: 3px; margin-bottom: 16px; }
.review-card > p { font-size: 14px; color: var(--text-2); line-height: 1.8; flex: 1; margin-bottom: 20px; }
.reviewer { display: flex; align-items: center; gap: 12px; }
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.reviewer strong { display: block; font-size: 14px; color: var(--text); font-weight: 500; }
.reviewer span { font-size: 12px; color: var(--text-3); }

/* news */
.news-section { background: var(--bg); }
.news-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.news-card-lg { margin-bottom: 0; }
.news-card-lg .news-thumb { height: 280px; overflow: hidden; }
.news-card-lg .news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-card-lg:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 22px 22px 24px; }
.news-card-lg .news-body { padding: 26px 28px 28px; }
.news-body .tag { margin-bottom: 12px; }
.news-body h3 { font-size: 19px; margin-bottom: 10px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body p { font-size: 14px; color: var(--text-2); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; color: var(--text-3); font-size: 13px; }
.news-meta .read-more { color: var(--primary); font-weight: 500; }
.news-meta .read-more:hover { color: var(--primary-dark); }
.news-side { display: flex; flex-direction: column; gap: 24px; }
.news-card-sm .news-body { padding: 20px 22px; }
.news-card-sm h3 { font-size: 16px; -webkit-line-clamp: 2; }
.news-card-sm p { -webkit-line-clamp: 1; margin-bottom: 4px; }
.news-meta i { margin-right: 4px; }
.empty-state {
  text-align: center;
  padding: 64px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
}
.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-3);
  font-size: 24px;
}
.empty-state p { color: var(--text-3); font-size: 14px; }

/* faq */
.faq-section { background: #fff; }
.faq-list { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.faq-item { position: relative; border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-item::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: transparent; transition: background 0.2s ease; }
.faq-item.active::before { background: var(--accent); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background 0.2s ease, color 0.2s ease;
  font-family: 'Noto Sans SC', sans-serif;
}
.faq-question:hover { background: var(--bg); color: var(--primary); }
.faq-question i { font-size: 14px; color: var(--text-3); transition: transform 0.25s ease, color 0.2s ease; flex-shrink: 0; }
.faq-item.active .faq-question { color: var(--primary); }
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.25s ease, padding 0.25s ease; padding: 0 28px; }
.faq-answer p { font-size: 14px; color: var(--text-2); line-height: 1.8; padding-bottom: 20px; }
.faq-item.active .faq-answer { max-height: 320px; }

/* cta */
.cta-section {
  background: linear-gradient(135deg, #EAF1F6 0%, #F5F6F8 60%, #F8F4EC 100%);
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 2px;
  background: var(--accent);
}
.cta-section h2 { font-size: 32px; margin-bottom: 12px; }
.cta-section p { font-size: 16px; color: var(--text-2); margin-bottom: 36px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* footer */
.site-footer { background: #1E2A32; color: rgba(255, 255, 255, 0.75); padding: 64px 0 40px; border-top: 2px solid var(--accent); }
.footer-logo { font-family: 'Noto Serif SC', serif; font-size: 25px; font-weight: 700; color: #fff; display: inline-flex; align-items: center; gap: 6px; margin-bottom: 16px; }
.footer-logo .logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; }
.footer-brand p { font-size: 14px; color: rgba(255, 255, 255, 0.6); max-width: 320px; line-height: 1.8; margin-bottom: 20px; }
.social-links { display: flex; gap: 12px; }
.social-links span {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  cursor: default;
}
.social-links span:hover { background: var(--accent); color: #1E2A32; border-color: var(--accent); }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 16px; margin-bottom: 20px; }
.footer-links a { display: block; font-size: 15px; color: rgba(255, 255, 255, 0.6); line-height: 28px; transition: color 0.2s, padding-left 0.2s; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p { font-size: 15px; color: rgba(255, 255, 255, 0.6); line-height: 28px; margin-bottom: 4px; }
.footer-contact i { margin-right: 10px; color: var(--accent); width: 16px; }
.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}
.footer-bottom p { font-size: 12px; color: #8A97A5; }

/* responsive */
@media (max-width: 768px) {
  :root { --section-space: 64px; }
  .hero { padding: 64px 0; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 15px; }
  .section-head h2 { font-size: 26px; }
  .cta-section h2 { font-size: 26px; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 32px rgba(30, 42, 50, 0.1);
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 16px; font-size: 16px; border-radius: var(--radius-sm); }
  .nav a.active { background: var(--primary-soft); color: var(--primary); }
  .nav a::after { display: none; }
  .journey-steps { flex-direction: column; align-items: center; }
  .journey-step { width: 100%; max-width: 360px; }
  .step-line { flex: 0 0 32px; width: 1px; height: 32px; background: linear-gradient(180deg, var(--accent), rgba(201, 168, 106, 0.25)); margin: 0 auto; }
  .step-line::after { right: -3px; top: auto; bottom: -3px; }
  .slider-prev { left: 4px; }
  .slider-next { right: 4px; }
  .feature-card { flex: 0 0 82%; }
  .news-card-lg .news-thumb { height: 200px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 28px; }
  .btn { width: 100%; }
  .hero-buttons { flex-direction: column; }
  .btn-download-group { flex-direction: column; }
  .btn-download { justify-content: center; }
  .feature-card { flex: 0 0 86%; }
  .review-card { padding: 22px 18px; }
  .cta-buttons { flex-direction: column; }
  .faq-question { padding: 18px 20px; font-size: 15px; }
  .faq-answer { padding: 0 20px; }
  .trust-item { padding: 10px 4px; }
}

/* roulang page: category1 */
:root {
            --primary: #4A7BA6;
            --primary-dark: #3D688F;
            --primary-light: #EAF1F6;
            --accent: #C9A86A;
            --accent-dark: #B08F4F;
            --bg: #F5F6F8;
            --card-bg: #FFFFFF;
            --text: #1E2A32;
            --text-secondary: #5A6B7B;
            --text-muted: #8A97A5;
            --border: #E2E6EA;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow: 0 8px 24px rgba(30, 42, 50, 0.06);
            --shadow-hover: 0 12px 32px rgba(30, 42, 50, 0.12);
            --transition: all 0.3s ease;
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
            --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

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

        .section {
            padding: 96px 0;
        }

        .section-alt {
            background: var(--card-bg);
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head h2 {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .section-head .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }

        /* ===== Header ===== */
        .site-header {
            background: rgba(245, 246, 248, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: 64px;
            display: flex;
            align-items: center;
            transition: box-shadow 0.3s ease;
        }

        .site-header:hover {
            box-shadow: 0 4px 20px rgba(30, 42, 50, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        .logo-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            margin-left: 2px;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
            position: relative;
            padding: 20px 0;
            line-height: 1;
            transition: color 0.3s ease;
        }

        .nav a:hover {
            color: var(--text);
        }

        .nav a.active {
            color: var(--text);
        }

        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 12px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 5px;
            border-radius: 999px;
            background: var(--primary);
            border: 1px solid var(--accent);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle:hover {
            background: var(--primary-light);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E2A32;
            padding: 64px 0 40px;
            border-top: 1px solid var(--accent);
        }

        .site-footer .row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-footer .row+.row {
            margin-top: 48px;
        }

        .footer-brand p {
            color: #8A97A5;
            font-size: 14px;
            line-height: 1.8;
            margin: 16px 0 24px;
            max-width: 320px;
        }

        .footer-logo {
            font-family: var(--font-serif);
            font-size: 25px;
            font-weight: 600;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-logo:hover {
            color: #fff;
        }

        .footer-logo .logo-dot {
            background: var(--accent);
        }

        .social-links {
            display: flex;
            gap: 16px;
        }

        .soc-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .soc-icon:hover {
            background: var(--accent);
            border-color: var(--accent);
            transform: translateY(-2px);
        }

        .footer-links,
        .footer-contact {
            padding-left: 20px;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 24px;
            font-family: var(--font-serif);
        }

        .footer-links a {
            display: block;
            color: #8A97A5;
            font-size: 15px;
            margin-bottom: 14px;
            line-height: 28px;
            transition: color 0.3s ease;
        }

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

        .footer-contact p {
            color: #8A97A5;
            font-size: 15px;
            margin-bottom: 14px;
            line-height: 28px;
        }

        .footer-contact i {
            width: 24px;
            color: var(--accent);
            margin-right: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 32px;
            text-align: center;
        }

        .footer-bottom p {
            color: #8A97A5;
            font-size: 12px;
        }

        /* ===== Hero 板块 ===== */
        .category-hero {
            padding: 80px 0 72px;
            background: linear-gradient(180deg, #EDF2F7 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
            position: relative;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(201, 168, 106, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .container {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 64px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-family: var(--font-serif);
            font-size: 44px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 20px;
        }

        .category-hero h1 .highlight {
            color: var(--accent);
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-feature-list {
            list-style: none;
            margin: 0 0 36px;
            padding: 0;
        }

        .hero-feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.7;
        }

        .hero-feature-list li i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            width: 20px;
            text-align: center;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-align: center;
            font-family: var(--font-sans);
            line-height: 1.4;
            min-height: 44px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(74, 123, 166, 0.3);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(74, 123, 166, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-secondary {
            background: #fff;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(74, 123, 166, 0.35);
            outline-offset: 2px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual .visual-frame {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .hero-visual .visual-frame img {
            width: 100%;
            height: auto;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .visual-tag {
            position: absolute;
            left: 20px;
            bottom: 20px;
            background: rgba(30, 42, 50, 0.78);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.04em;
        }

        .visual-tag .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(201, 168, 106, 0.5);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(201, 168, 106, 0);
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 16px 0;
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        .breadcrumb .sep {
            margin: 0 8px;
            color: var(--border);
        }

        .breadcrumb .current {
            color: var(--text-secondary);
        }

        /* ===== 玩法概述 ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .overview-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .overview-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent);
            opacity: 0;
            transition: var(--transition);
        }

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

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

        .overview-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .overview-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
            font-family: var(--font-serif);
            line-height: 1.4;
        }

        .overview-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 核心规则 ===== */
        .rules-wrap {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 64px;
            align-items: center;
        }

        .rules-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .rules-visual img {
            width: 100%;
            height: auto;
            aspect-ratio: 5 / 4;
            object-fit: cover;
        }

        .rules-content .rule-item {
            display: flex;
            gap: 20px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border);
        }

        .rules-content .rule-item:first-of-type {
            padding-top: 0;
        }

        .rules-content .rule-item:last-of-type {
            border-bottom: none;
            padding-bottom: 0;
        }

        .rule-item .rule-num {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 600;
            color: var(--accent);
            min-width: 48px;
            height: 48px;
            border-radius: 50%;
            border: 1.5px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
        }

        .rule-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            font-family: var(--font-serif);
        }

        .rule-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 实战要点 ===== */
        .tips-section {
            background: #fff;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .tip-card {
            padding: 40px 32px;
            background: var(--bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }

        .tip-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .tip-card .tip-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin: 0 auto 20px;
            transition: var(--transition);
        }

        .tip-card:hover .tip-icon {
            border-color: var(--accent);
            color: var(--accent);
        }

        .tip-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 14px;
            font-family: var(--font-serif);
        }

        .tip-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-item:last-of-type {
            border-bottom: none;
        }

        .faq-item.active {
            border-left: 3px solid var(--accent);
        }

        .faq-question {
            width: 100%;
            padding: 24px 32px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 44px;
            font-family: var(--font-sans);
            line-height: 1.6;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: #FAFBFC;
        }

        .faq-question .faq-icon {
            color: var(--accent);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 32px 24px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: #EDF2F7;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(201, 168, 106, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box {
            text-align: center;
            padding: 48px 40px;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-note {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .category-hero .container {
                gap: 40px;
            }

            .category-hero h1 {
                font-size: 38px;
            }

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

            .rules-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .tips-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }

            .section {
                padding: 72px 0;
            }
        }

        @media screen and (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }

            .nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                gap: 0;
                box-shadow: 0 20px 40px rgba(30, 42, 50, 0.10);
                border-bottom: 1px solid var(--border);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-8px);
                transition: all 0.3s ease;
                z-index: 99;
            }

            .nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .nav a {
                padding: 14px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--border);
                line-height: 1.4;
            }

            .nav a:last-of-type {
                border-bottom: none;
            }

            .nav a.active::after {
                bottom: 12px;
                left: 0;
                transform: none;
                width: 4px;
                height: 18px;
                border-radius: 999px;
            }

            .nav-toggle {
                display: flex;
            }

            .category-hero {
                padding: 56px 0 48px;
            }

            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-buttons .btn {
                width: 100%;
            }

            .section {
                padding: 64px 0;
            }

            .section-head {
                margin-bottom: 40px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .rules-content .rule-item {
                padding: 20px 0;
            }

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

            .tip-card {
                padding: 28px 24px;
            }

            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
                gap: 12px;
            }

            .faq-answer-inner {
                padding: 0 20px 18px;
                font-size: 14px;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 26px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .footer-links,
            .footer-contact {
                padding-left: 0;
                margin-top: 32px;
            }

            .site-footer {
                padding: 48px 0 24px;
            }

            .breadcrumb {
                font-size: 13px;
                padding: 12px 0;
                overflow-x: auto;
                white-space: nowrap;
            }
        }

        @media screen and (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                padding: 0 16px;
            }

            .section {
                padding: 56px 0;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .hero-feature-list li {
                font-size: 14px;
            }

            .overview-card {
                padding: 24px 20px;
            }

            .rule-item .rule-num {
                min-width: 40px;
                height: 40px;
                font-size: 18px;
            }

            .rule-item {
                gap: 14px;
            }

            .visual-tag {
                left: 12px;
                bottom: 12px;
                padding: 8px 14px;
                font-size: 12px;
            }

            .cta-note {
                font-size: 12px;
            }
        }

/* roulang page: article */
:root {
            --primary: #4A7BA6;
            --primary-hover: #3D688F;
            --primary-soft: #EAF1F6;
            --accent: #C9A86A;
            --bg: #F5F6F8;
            --card: #FFFFFF;
            --text: #1E2A32;
            --text-2: #5A6B7B;
            --text-3: #8A97A5;
            --border: #E2E6EA;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-base: 0 8px 24px rgba(30,42,50,0.06);
            --shadow-hover: 0 12px 32px rgba(30,42,50,0.12);
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container,
        .grid-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* === 导航 === */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-family: var(--font-serif);
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .logo:hover {
            color: var(--text);
        }

        .logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            margin-left: 3px;
            vertical-align: 3px;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-2);
            padding: 6px 2px;
            position: relative;
            letter-spacing: 0.02em;
        }

        .nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            transition: var(--transition);
        }

        .nav a:hover {
            color: var(--text);
        }

        .nav a.active {
            color: var(--text);
        }

        .nav a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            padding: 8px 10px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: var(--primary-soft);
        }

        /* === 面包屑 === */
        .breadcrumb-wrap {
            padding: 22px 0 0;
            background: var(--bg);
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--text-3);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            line-height: 1.6;
        }

        .breadcrumb a {
            color: var(--text-2);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }

        .bc-sep {
            color: var(--border);
            font-size: 13px;
        }

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

        /* === 文章主区 === */
        .article-main {
            padding: 16px 0 96px;
        }

        .article-header {
            text-align: center;
            padding: 40px 0 36px;
            max-width: 860px;
            margin: 0 auto;
        }

        .article-header h1 {
            font-family: var(--font-serif);
            font-size: 40px;
            line-height: 1.4;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            justify-content: center;
            gap: 28px;
            font-size: 14px;
            color: var(--text-3);
            flex-wrap: wrap;
        }

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

        .article-meta .meta-item i {
            margin-right: 6px;
            color: var(--accent);
        }

        .article-body {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-content {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-base);
            padding: 48px 56px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content h2 {
            font-family: var(--font-serif);
            font-size: 28px;
            font-weight: 600;
            margin: 44px 0 16px;
            color: var(--text);
            line-height: 1.4;
        }

        .article-content h3 {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text);
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: 24px;
            color: var(--text);
        }

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

        .article-content img {
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            margin: 28px auto;
            box-shadow: var(--shadow-base);
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent);
            padding: 16px 24px;
            background: #F8FAFC;
            border-radius: 0 8px 8px 0;
            margin: 28px 0;
            color: var(--text-2);
            font-style: normal;
        }

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

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

        .article-content code {
            background: #F2F4F7;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            color: #D97757;
        }

        .article-content pre {
            background: #F2F4F7;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin-bottom: 24px;
            font-size: 14px;
            line-height: 1.6;
        }

        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 40px 0;
        }

        .article-content table {
            width: 100%;
            margin-bottom: 24px;
            border-collapse: collapse;
            font-size: 15px;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content table th {
            background: var(--primary-soft);
            font-weight: 600;
        }

        /* === 空态 === */
        .article-empty {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-base);
            padding: 72px 48px;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .article-empty p {
            font-size: 18px;
            color: var(--text-3);
            margin-bottom: 24px;
        }

        .article-empty .btn {
            display: inline-flex;
        }

        /* === 相关推荐 === */
        .related-posts {
            margin-top: 64px;
        }

        .related-posts h2 {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 600;
            text-align: center;
            margin-bottom: 36px;
            color: var(--text);
            line-height: 1.4;
        }

        .post-card {
            background: var(--card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-base);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(226, 230, 234, 0.4);
        }

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

        .post-card-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .post-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .post-card:hover .post-card-thumb img {
            transform: scale(1.04);
        }

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

        .tag {
            display: inline-block;
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .post-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-card-body h3 a {
            color: var(--text);
        }
        .post-card-body h3 a:hover {
            color: var(--primary);
        }

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

        .post-card-foot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            font-size: 12px;
            color: var(--text-3);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .post-card-foot a {
            color: var(--primary);
            font-weight: 500;
            font-size: 13px;
        }
        .post-card-foot a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

        /* === 返回入口 === */
        .article-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            padding: 48px 0 0;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition);
            border: none;
            line-height: 1.2;
            min-height: 44px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-soft);
            transform: translateY(-2px);
            color: var(--primary);
        }

        .btn:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(74, 123, 166, 0.4);
            outline-offset: 2px;
        }

        /* === 页脚 === */
        .site-footer {
            background: #1E2A32;
            padding: 64px 0 40px;
            border-top: 1px solid var(--accent);
        }

        .site-footer .row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .footer-brand {
            margin-bottom: 24px;
        }

        .footer-logo {
            font-family: var(--font-serif);
            font-size: 25px;
            color: #fff;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
        }
        .footer-logo:hover {
            color: #fff;
        }

        .footer-brand p {
            color: #8A97A5;
            font-size: 14px;
            margin: 16px 0;
            line-height: 1.7;
            max-width: 320px;
        }

        .social-links {
            display: flex;
            gap: 12px;
        }

        .soc-icon {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: #B8C4CE;
            font-size: 16px;
            transition: var(--transition);
            cursor: pointer;
        }

        .soc-icon:hover {
            background: var(--primary);
            color: #fff;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-links a {
            display: block;
            color: #8A97A5;
            font-size: 15px;
            line-height: 28px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact p {
            color: #8A97A5;
            font-size: 15px;
            line-height: 28px;
        }

        .footer-contact i {
            color: var(--accent);
            margin-right: 8px;
            width: 20px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            color: #8A97A5;
            font-size: 12px;
        }

        /* === 响应式 === */
        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 0;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-hover);
                transform: translateY(-16px);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 99;
            }

            .nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav a {
                display: block;
                padding: 14px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
                line-height: 1.4;
            }

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

            .nav a.active {
                background: var(--primary-soft);
                color: var(--primary);
            }

            .nav-toggle {
                display: block;
            }

            .article-header h1 {
                font-size: 32px;
            }

            .article-content {
                padding: 32px 24px;
            }

            .article-content h2 {
                font-size: 24px;
            }

            .related-posts h2 {
                font-size: 26px;
            }

            .site-footer {
                padding: 48px 0 32px;
            }
        }

        @media (max-width: 520px) {
            .container,
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .site-footer .row {
                padding: 0 16px;
            }

            .article-header {
                padding: 28px 0 24px;
            }

            .article-header h1 {
                font-size: 27px;
            }

            .article-meta {
                gap: 14px;
                font-size: 13px;
            }

            .article-content {
                padding: 24px 18px;
                border-radius: var(--radius-md);
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 19px;
            }

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

            .btn {
                justify-content: center;
                width: 100%;
            }

            .related-posts {
                margin-top: 48px;
            }

            .related-posts h2 {
                font-size: 24px;
                margin-bottom: 24px;
            }

            .breadcrumb-wrap {
                padding-top: 14px;
            }

            .breadcrumb {
                font-size: 13px;
                gap: 6px;
            }

            .bc-current {
                max-width: 180px;
            }
        }

        @media (max-width: 375px) {
            .article-header h1 {
                font-size: 24px;
            }

            .article-content {
                padding: 20px 14px;
            }

            .post-card-body h3 {
                font-size: 16px;
            }
        }

/* roulang page: category2 */
/* ============ 设计变量 ============ */
    :root {
      --primary: #4A7BA6;
      --primary-dark: #3D688F;
      --accent: #C9A86A;
      --accent-dark: #B08A4F;
      --dark: #1E2A32;
      --dark-soft: #273A47;
      --text: #1E2A32;
      --text-light: #5A6B7B;
      --text-muted: #8A97A5;
      --bg: #F5F6F8;
      --card: #FFFFFF;
      --line: #E2E6EA;
      --line-strong: #D8DEE3;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow: 0 8px 24px rgba(30,42,50,0.06);
      --shadow-lg: 0 12px 32px rgba(30,42,50,0.12);
      --transition: all 0.25s ease;
      --header-h: 64px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, h5 {
      font-family: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
      margin: 0;
      line-height: 1.4;
      color: var(--text);
    }

    p {
      margin: 0;
    }

    ul {
      margin: 0;
      padding: 0;
      list-style: none;
    }

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

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

    img {
      max-width: 100%;
      display: block;
      border: 0;
    }

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

    .grid-container {
      max-width: 1200px;
    }

    /* ============ 顶部导航 ============ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-h);
    }

    .logo {
      display: inline-flex;
      align-items: center;
      font-family: "Noto Serif SC", "Songti SC", serif;
      font-size: 24px;
      font-weight: 700;
      color: var(--text);
      letter-spacing: 0.02em;
      line-height: 1.2;
      white-space: nowrap;
    }

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

    .logo-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      margin-left: 5px;
      display: inline-block;
      vertical-align: 5px;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-light);
      letter-spacing: 0.02em;
      padding: 8px 2px;
      position: relative;
      white-space: nowrap;
    }

    .nav a::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 0;
      width: 20px;
      height: 5px;
      border-radius: 999px;
      background: var(--primary);
      border: 1px solid var(--accent);
      transform: translateX(-50%) scaleX(0);
      transition: transform 0.25s ease;
    }

    .nav a:hover {
      color: var(--text);
    }

    .nav a:hover::after {
      transform: translateX(-50%) scaleX(1);
    }

    .nav a.active {
      color: var(--text);
      font-weight: 700;
    }

    .nav a.active::after {
      transform: translateX(-50%) scaleX(1);
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      background: var(--card);
      border-radius: var(--radius-sm);
      color: var(--text);
      font-size: 18px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
    }

    .nav-toggle:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .nav-toggle:focus-visible,
    .nav a:focus-visible,
    .btn:focus-visible {
      outline: 3px solid rgba(74, 123, 166, 0.4);
      outline-offset: 2px;
    }

    /* ============ 通用按钮 ============ */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 500;
      line-height: 1.4;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
    }

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

    .btn-primary:hover {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(74, 123, 166, 0.25);
    }

    .btn-primary:active {
      transform: translateY(1px);
      box-shadow: none;
    }

    .btn-gold {
      background: var(--accent);
      color: #1E2A32;
      border-color: var(--accent);
    }

    .btn-gold:hover {
      background: var(--accent-dark);
      border-color: var(--accent-dark);
      color: #1E2A32;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(201, 168, 106, 0.35);
    }

    .btn-ghost {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, 0.5);
    }

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

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

    .btn-outline:hover {
      background: #EAF1F6;
      color: var(--primary-dark);
      border-color: var(--primary-dark);
    }

    /* ============ 页面 Hero ============ */
    .page-hero {
      position: relative;
      background: var(--dark);
      background-image: linear-gradient(135deg, #15202B 0%, #1E2A32 55%, #24384A 100%);
      padding: 88px 0 96px;
      overflow: hidden;
    }

    .page-hero .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0.28;
    }

    .page-hero .hero-bg::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(30, 42, 50, 0.85) 0%, rgba(30, 42, 50, 0.4) 100%);
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 500;
      color: #E8D9B8;
      background: rgba(201, 168, 106, 0.12);
      border: 1px solid rgba(201, 168, 106, 0.35);
      border-radius: 999px;
      padding: 6px 16px;
      margin-bottom: 20px;
      letter-spacing: 0.04em;
    }

    .hero-badge i {
      font-size: 12px;
    }

    .page-hero h1 {
      font-size: 44px;
      color: #fff;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 16px;
    }

    .page-hero h1 .accent-text {
      color: var(--accent);
    }

    .hero-sub {
      font-size: 16px;
      color: #B6C6D4;
      line-height: 1.8;
      max-width: 520px;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .hero-visual {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.12);
      transform: rotate(1deg);
    }

    .hero-visual img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    /* ============ 面包屑 ============ */
    .breadcrumb-bar {
      background: #fff;
      border-bottom: 1px solid var(--line);
      padding: 14px 0;
    }

    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .breadcrumb-nav a {
      color: var(--text-light);
    }

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

    .breadcrumb-nav .divider {
      color: #C4C9CF;
    }

    .breadcrumb-nav .current {
      color: var(--text);
      font-weight: 500;
    }

    /* ============ 通用块级区 ============ */
    .section {
      padding: 96px 0;
    }

    .section-alt {
      background: #fff;
    }

    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 56px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text);
      position: relative;
    }

    .section-title::after {
      content: "";
      display: block;
      width: 32px;
      height: 2px;
      background: var(--accent);
      margin: 12px auto 0;
    }

    .section-sub {
      font-size: 16px;
      color: var(--text-light);
      margin-top: 14px;
      line-height: 1.8;
    }

    .section-head-left {
      text-align: left;
      max-width: 640px;
      margin: 0 0 48px;
    }

    .section-head-left .section-title::after {
      margin: 12px 0 0;
    }

    /* ============ 核心亮点卡 ============ */
    .feature-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      height: 100%;
      transition: var(--transition);
      position: relative;
    }

    .feature-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: rgba(74, 123, 166, 0.3);
    }

    .icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: #EAF1F6;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
    }

    .icon-box.gold {
      background: #F6EFDF;
      color: var(--accent-dark);
    }

    .feature-card h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.8;
    }

    /* ============ 数据带 ============ */
    .data-strip {
      background: var(--dark);
      background-image: linear-gradient(135deg, #1E2A32 0%, #263B4B 100%);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      margin-top: 64px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      border: 1px solid rgba(201, 168, 106, 0.2);
    }

    .data-item {
      text-align: center;
      padding: 16px 8px;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }

    .data-item:last-child {
      border-right: 0;
    }

    .data-item i {
      font-size: 28px;
      color: var(--accent);
      margin-bottom: 12px;
      display: block;
    }

    .data-item strong {
      display: block;
      font-size: 18px;
      font-weight: 600;
      color: #fff;
      font-family: "Noto Serif SC", serif;
      margin-bottom: 6px;
    }

    .data-item span {
      font-size: 13px;
      color: #8FA3B5;
    }

    /* ============ 版本时间线 ============ */
    .timeline-wrap {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      padding: 48px 48px 16px;
      position: relative;
      overflow: hidden;
    }

    .timeline {
      position: relative;
      padding-left: 36px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      left: 12px;
      top: 6px;
      bottom: 24px;
      width: 2px;
      background: linear-gradient(180deg, var(--primary), var(--accent));
      border-radius: 2px;
    }

    .timeline-item {
      position: relative;
      padding-bottom: 48px;
    }

    .timeline-item:last-child {
      padding-bottom: 24px;
    }

    .timeline-item::before {
      content: "";
      position: absolute;
      left: -33px;
      top: 6px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #fff;
      border: 3px solid var(--primary);
      box-shadow: 0 0 0 3px rgba(74, 123, 166, 0.15);
    }

    .timeline-item.gold::before {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.2);
    }

    .timeline-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 500;
      color: var(--primary);
      background: #EAF1F6;
      border-radius: 999px;
      padding: 4px 12px;
      margin-bottom: 10px;
    }

    .timeline-tag.gold {
      color: var(--accent-dark);
      background: #F6EFDF;
    }

    .timeline-item h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .timeline-item p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.8;
      max-width: 680px;
    }

    /* ============ 更新流程 ============ */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 24px;
      counter-reset: step-counter;
    }

    .step-item {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      transition: var(--transition);
    }

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

    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #EAF1F6;
      color: var(--primary);
      font-family: "Noto Serif SC", serif;
      font-size: 16px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      border: 1px solid rgba(74, 123, 166, 0.2);
    }

    .step-item h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.7;
    }

    .step-item .step-arrow {
      position: absolute;
      right: -18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--accent);
      font-size: 14px;
      z-index: 2;
    }

    /* ============ 适用场景 ============ */
    .use-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 32px;
      height: 100%;
      transition: var(--transition);
    }

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

    .use-card .use-icon {
      width: 56px;
      height: 56px;
      border-radius: var(--radius-md);
      background: var(--dark);
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
    }

    .use-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .use-card p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.8;
    }

    .use-card.lift {
      margin-top: 16px;
    }

    /* ============ FAQ ============ */
    .faq-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }

    .faq-item {
      border-bottom: 1px solid var(--line);
      padding: 0 32px;
      transition: background 0.2s ease;
    }

    .faq-item:last-child {
      border-bottom: 0;
    }

    .faq-q {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 24px 0;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      cursor: pointer;
      border: 0;
      background: none;
      text-align: left;
      width: 100%;
      transition: color 0.2s ease;
    }

    .faq-q:hover {
      color: var(--primary);
    }

    .faq-q .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #EAF1F6;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex-shrink: 0;
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .faq-item.active .faq-q .faq-icon {
      transform: rotate(45deg);
      background: var(--accent);
      color: #fff;
    }

    .faq-a {
      display: none;
      padding-bottom: 24px;
      padding-right: 40px;
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.8;
    }

    .faq-item.active {
      border-left: 3px solid var(--accent);
      padding-left: 29px;
      background: #FCFAF5;
    }

    .faq-item.active .faq-a {
      display: block;
      animation: fadeIn 0.3s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(-6px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ============ CTA 区 ============ */
    .cta-section {
      position: relative;
      background: var(--dark);
      background-image: linear-gradient(135deg, #1E2A32 0%, #243A4A 100%);
      padding: 88px 0;
      overflow: hidden;
      text-align: center;
    }

    .cta-section .cta-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0.2;
    }

    .cta-section .cta-bg::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(30, 42, 50, 0.7), rgba(30, 42, 50, 0.9));
    }

    .cta-content {
      position: relative;
      z-index: 2;
    }

    .cta-content h2 {
      font-size: 32px;
      color: #fff;
      margin-bottom: 16px;
    }

    .cta-content p {
      font-size: 16px;
      color: #B6C6D4;
      max-width: 560px;
      margin: 0 auto 36px;
      line-height: 1.8;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
    }

    .cta-note {
      margin-top: 24px;
      font-size: 13px;
      color: #7C93A5;
    }

    /* ============ 页脚 ============ */
    .site-footer {
      background: var(--dark);
      padding: 64px 0 40px;
      border-top: 1px solid var(--accent);
    }

    .footer-brand p {
      color: #8FA3B5;
      font-size: 14px;
      line-height: 1.8;
      margin: 16px 0 20px;
      max-width: 360px;
    }

    .footer-logo {
      font-family: "Noto Serif SC", serif;
      font-size: 25px;
      font-weight: 700;
      color: #fff;
      display: inline-flex;
      align-items: center;
    }

    .footer-logo:hover {
      color: var(--accent);
    }

    .social-links {
      display: flex;
      gap: 12px;
    }

    .soc-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #C7D3DF;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      cursor: pointer;
      transition: var(--transition);
    }

    .soc-icon:hover {
      background: var(--accent);
      color: var(--dark);
      border-color: var(--accent);
    }

    .footer-links h4,
    .footer-contact h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
      font-family: "Noto Sans SC", sans-serif;
    }

    .footer-links a {
      display: block;
      color: #8FA3B5;
      font-size: 14px;
      line-height: 2.2;
      transition: var(--transition);
    }

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

    .footer-contact p {
      color: #8FA3B5;
      font-size: 14px;
      line-height: 2.2;
    }

    .footer-contact p i {
      width: 22px;
      color: var(--accent);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 48px;
      padding-top: 24px;
      text-align: center;
    }

    .footer-bottom p {
      font-size: 12px;
      color: #8FA3B5;
    }

    /* ============ 响应式 ============ */
    @media (max-width: 1024px) {
      .steps-grid {
        grid-template-columns: repeat(3, 1fr);
      }

      .step-item:nth-child(4),
      .step-item:nth-child(5) {
        margin-top: 24px;
      }

      .step-arrow {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .site-header {
        position: sticky;
      }

      .header-inner {
        position: relative;
      }

      .nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        display: none;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 16px 32px rgba(30, 42, 50, 0.12);
      }

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

      .nav a {
        display: block;
        padding: 14px 24px;
        font-size: 15px;
        border-top: 1px solid var(--line);
        color: var(--text-light);
      }

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

      .nav a.active {
        color: var(--primary);
        background: #F5F8FB;
        font-weight: 700;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .section {
        padding: 64px 0;
      }

      .section-title {
        font-size: 26px;
      }

      .page-hero {
        padding: 56px 0 72px;
      }

      .page-hero h1 {
        font-size: 32px;
      }

      .hero-visual img {
        height: 220px;
      }

      .data-strip {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }

      .data-item {
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      }

      .data-item:nth-child(odd) {
        border-right: 1px solid rgba(255, 255, 255, 0.08);
      }

      .steps-grid {
        grid-template-columns: 1fr;
      }

      .step-item {
        margin-top: 0 !important;
      }

      .timeline-wrap {
        padding: 32px 20px 8px;
      }

      .faq-item {
        padding: 0 20px;
      }

      .faq-item.active {
        padding-left: 17px;
      }

      .faq-q {
        font-size: 15px;
      }

      .faq-a {
        padding-right: 0;
      }

      .cta-section {
        padding: 64px 0;
      }

      .cta-content h2 {
        font-size: 26px;
      }

      .footer-brand,
      .footer-links,
      .footer-contact {
        margin-bottom: 32px;
      }

      .footer-bottom {
        margin-top: 24px;
      }
    }

    @media (max-width: 520px) {
      .header-inner {
        height: 56px;
      }

      .logo {
        font-size: 20px;
      }

      .logo-dot {
        width: 7px;
        height: 7px;
      }

      .nav a {
        min-height: 44px;
      }

      .breadcrumb-bar {
        padding: 10px 0;
      }

      .page-hero h1 {
        font-size: 28px;
      }

      .hero-sub {
        font-size: 14px;
      }

      .hero-actions {
        flex-direction: column;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .data-strip {
        grid-template-columns: 1fr;
      }

      .data-item:nth-child(odd) {
        border-right: 0;
      }

      .data-item {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding: 20px 8px;
      }

      .data-item:last-child {
        border-bottom: 0;
      }

      .timeline {
        padding-left: 30px;
      }

      .timeline-item::before {
        left: -27px;
      }

      .timeline-wrap {
        padding: 24px 16px 4px;
      }

      .faq-item {
        padding: 0 16px;
      }

      .faq-item.active {
        padding-left: 13px;
      }

      .faq-q {
        padding: 20px 0;
        font-size: 14px;
      }

      .cta-actions {
        flex-direction: column;
      }

      .cta-actions .btn {
        width: 100%;
      }
    }