/* roulang page: index */
:root {
  --primary: #1a1a2e;
  --primary-light: #16213e;
  --accent: #e94560;
  --accent-hover: #d63850;
  --accent-light: #fde8ec;
  --bg-body: #f5f6fa;
  --bg-card: #ffffff;
  --bg-dark: #0f0f1a;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8a8aa0;
  --text-light: #f0f0f5;
  --border-color: #e8e8f0;
  --shadow-sm: 0 2px 8px rgba(26,26,46,0.06);
  --shadow-md: 0 8px 30px rgba(26,26,46,0.1);
  --shadow-lg: 0 20px 60px rgba(26,26,46,0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --sidebar-width: 240px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  min-height: 100vh;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; outline: none; }
ul { list-style: none; padding: 0; margin: 0; }

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--primary);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  z-index: 1050;
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 2px 0 30px rgba(0,0,0,0.2);
}
.sidebar-brand {
  padding: 28px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-brand .brand-icon {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  flex-shrink: 0;
}
.sidebar-brand .brand-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #fff;
  line-height: 1.3;
}
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}
.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  margin-bottom: 4px;
  cursor: pointer;
}
.sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 16px; }
.sidebar-nav .nav-item:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}
.sidebar-nav .nav-item.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 15px rgba(233,69,96,0.35);
}
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* Main content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  background: var(--bg-body);
}

/* Mobile topbar */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 1040;
  background: var(--primary);
  padding: 12px 20px;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}
.mobile-topbar .brand-text {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
}
.mobile-topbar .menu-toggle {
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  padding: 4px 8px;
  cursor: pointer;
}

/* Offcanvas */
.offcanvas.offcanvas-start {
  background: var(--primary);
  color: var(--text-light);
  width: var(--sidebar-width);
}
.offcanvas .offcanvas-body { padding: 0; }
.offcanvas .btn-close { filter: invert(1); opacity: 0.7; }

/* Sections */
.section {
  padding: 80px 0;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 48px;
  line-height: 1.7;
}
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* Hero */
.hero {
  position: relative;
  padding: 120px 0 100px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 60%, #0d1b2a 100%);
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.15;
  mix-blend-mode: overlay;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg-body), transparent);
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(233,69,96,0.18);
  border: 1px solid rgba(233,69,96,0.3);
  color: #f8a5b8;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-btns .btn-primary-custom {
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  box-shadow: 0 8px 30px rgba(233,69,96,0.35);
}
.hero-btns .btn-primary-custom:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(233,69,96,0.45);
}
.hero-btns .btn-outline-custom {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.25);
  color: #fff;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.hero-btns .btn-outline-custom:hover {
  border-color: var(--accent);
  background: rgba(233,69,96,0.12);
  color: #fff;
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stats .stat-item { text-align: left; }
.hero-stats .stat-number {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-stats .stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px 28px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  text-align: center;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature-card .icon-box {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 20px;
  background: var(--accent-light);
  color: var(--accent);
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* Highlights */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 24px;
}
.highlight-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.highlight-card .card-img {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.highlight-card .card-img .tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: #fff;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
}
.highlight-card .card-body {
  padding: 24px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.highlight-card .card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.highlight-card .card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}
.highlight-card .card-body .card-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.highlight-card .card-body .card-link:hover { gap: 10px; }

/* Category section */
.category-section {
  background: var(--bg-card);
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 24px;
}
.category-card {
  background: var(--bg-body);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 20px;
}
.category-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.category-card .cat-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.category-card .cat-info h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
}
.category-card .cat-info p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 0;
}
.category-card .cat-arrow {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 18px;
  transition: var(--transition);
}
.category-card:hover .cat-arrow { color: var(--accent); transform: translateX(4px); }

/* Latest posts */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 20px;
}
.post-card {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}
.post-card .post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.post-card .post-meta .badge-custom {
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
  padding: 2px 12px;
  border-radius: 50px;
  font-size: 12px;
}
.post-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.post-card .post-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.post-card .post-footer .post-date {
  font-size: 13px;
  color: var(--text-muted);
}
.post-card .post-footer .post-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
}
.post-card .post-footer .post-link:hover { text-decoration: underline; }

/* Process */
.process-section {
  background: var(--primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.process-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.06;
  mix-blend-mode: overlay;
}
.process-section .container { position: relative; z-index: 2; }
.process-section .section-title { color: #fff; }
.process-section .section-subtitle { color: rgba(255,255,255,0.65); }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: linear-gradient(to right, var(--accent), rgba(233,69,96,0.2));
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.process-step .step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 30px rgba(233,69,96,0.3);
  position: relative;
  z-index: 2;
}
.process-step h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}
.process-step p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0;
  line-height: 1.6;
}

/* Stats bar */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 48px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 24px;
  text-align: center;
}
.stat-block .stat-num {
  font-size: 36px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1.2;
}
.stat-block .stat-label {
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: 4px;
  font-weight: 500;
}

/* FAQ */
.faq-accordion .accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm) !important;
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}
.faq-accordion .accordion-item:last-child { margin-bottom: 0; }
.faq-accordion .accordion-header .accordion-button {
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
  background: var(--bg-card);
  padding: 18px 24px;
  box-shadow: none;
  border: none;
}
.faq-accordion .accordion-header .accordion-button:not(.collapsed) {
  color: var(--accent);
  background: var(--bg-card);
}
.faq-accordion .accordion-header .accordion-button::after {
  background-size: 16px;
}
.faq-accordion .accordion-body {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, #0d1b2a 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity: 0.08;
  mix-blend-mode: overlay;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-section p {
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto 32px;
}
.cta-section .btn-cta {
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 16px 48px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
  box-shadow: 0 8px 30px rgba(233,69,96,0.35);
}
.cta-section .btn-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(233,69,96,0.5);
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.6);
  padding: 48px 0 32px;
}
.site-footer .footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.site-footer .footer-desc {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 300px;
}
.site-footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  margin-bottom: 16px;
}
.site-footer .footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.site-footer .footer-links a:hover { color: var(--accent); }
.site-footer .footer-divider {
  border-color: rgba(255,255,255,0.08);
  margin: 24px 0;
}
.site-footer .footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}
.site-footer .footer-bottom a { color: rgba(255,255,255,0.4); }
.site-footer .footer-bottom a:hover { color: var(--accent); }

/* Scrollbar */
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

/* Responsive */
@media (max-width: 991px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.show { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .mobile-topbar { display: flex; }
  .hero { padding: 100px 0 80px; min-height: auto; }
  .hero h1 { font-size: 36px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stats .stat-item { flex: 1; min-width: 80px; }
  .features-grid { grid-template-columns: repeat(2,1fr); }
  .highlights-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .posts-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2,1fr); }
  .process-steps::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 32px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .cta-section h2 { font-size: 28px; }
}
@media (max-width: 767px) {
  .hero { padding: 80px 0 60px; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 16px; }
  .hero-btns .btn-primary-custom, .hero-btns .btn-outline-custom { padding: 12px 24px; font-size: 15px; }
  .hero-stats .stat-number { font-size: 22px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 28px 20px 24px; }
  .highlight-card .card-img { height: 160px; }
  .process-steps { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 24px; }
  .stat-block .stat-num { font-size: 28px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .section-subtitle { font-size: 15px; margin-bottom: 32px; }
  .category-card { padding: 24px 20px; flex-wrap: wrap; }
  .cta-section { padding: 60px 0; }
  .cta-section h2 { font-size: 24px; }
  .cta-section .btn-cta { padding: 14px 32px; font-size: 16px; }
  .site-footer .footer-bottom { flex-direction: column; text-align: center; }
  .mobile-topbar .brand-text { font-size: 15px; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 24px; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .hero-stats .stat-item { text-align: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .post-card { padding: 16px 18px; }
}

/* roulang page: category1 */
/* ===== CSS 设计变量与重置 ===== */
        :root {
            --primary: #8B5CF6;
            --primary-dark: #7C3AED;
            --primary-light: #A78BFA;
            --secondary: #F59E0B;
            --accent: #EC4899;
            --bg-dark: #0F172A;
            --bg-darker: #020617;
            --bg-card: #1E293B;
            --bg-body: #0F172A;
            --text-light: #F8FAFC;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --border-color: #334155;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --sidebar-width: 240px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            display: flex;
            min-height: 100vh;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 布局 ===== */
        .app-wrapper {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* ===== 左侧导航 Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-darker);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            padding: 24px 16px;
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 24px;
        }
        .sidebar-logo i {
            font-size: 1.6rem;
            color: var(--accent);
        }
        .sidebar-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            background: transparent;
            cursor: pointer;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            font-size: 1.1rem;
            text-align: center;
        }
        .sidebar-nav .nav-item:hover {
            background: var(--bg-card);
            color: var(--text-light);
            transform: translateX(4px);
        }
        .sidebar-nav .nav-item.active {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.25), rgba(236, 72, 153, 0.15));
            color: var(--primary-light);
            border-left: 3px solid var(--accent);
            font-weight: 600;
        }
        .sidebar-nav .nav-item.active i {
            color: var(--accent);
        }

        /* 移动端菜单按钮（桌面隐藏） */
        .sidebar-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1060;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-light);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
        }
        .sidebar-toggle:hover {
            background: var(--primary-dark);
            border-color: var(--primary);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 页面头部 ===== */
        .page-header {
            padding: 60px 0 50px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .page-header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.08), transparent 70%);
            pointer-events: none;
        }
        .page-header .container {
            position: relative;
            z-index: 2;
        }
        .page-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--text-light) 30%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .page-header p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
        }
        .page-header .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 18px;
        }
        .page-header .breadcrumb-item,
        .page-header .breadcrumb-item a {
            color: var(--text-dim);
            font-size: 0.9rem;
        }
        .page-header .breadcrumb-item.active {
            color: var(--primary-light);
        }
        .page-header .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-dim);
        }

        /* ===== 通用容器 ===== */
        .container {
            max-width: 1200px;
            padding: 0 24px;
            margin: 0 auto;
        }

        /* ===== 板块间距 ===== */
        .section-block {
            padding: 70px 0;
        }
        .section-block+.section-block {
            border-top: 1px solid var(--border-color);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .card-custom .card-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .card-custom h5 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card-custom p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .card-custom .badge-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(139, 92, 246, 0.2);
            color: var(--primary-light);
            margin-top: 12px;
        }

        /* ===== 步骤流程 ===== */
        .step-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(51, 65, 85, 0.5);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
        }
        .step-content h5 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-content p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 0;
        }

        /* ===== 版本对比表格 ===== */
        .version-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0 8px;
        }
        .version-table th {
            padding: 14px 18px;
            font-weight: 600;
            color: var(--text-light);
            background: var(--bg-card);
            border-bottom: 2px solid var(--primary);
            font-size: 0.95rem;
        }
        .version-table td {
            padding: 14px 18px;
            background: var(--bg-card);
            color: var(--text-muted);
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-color);
        }
        .version-table tr:hover td {
            background: rgba(139, 92, 246, 0.05);
        }
        .version-table .badge-yes {
            color: #10B981;
            font-weight: 600;
        }
        .version-table .badge-no {
            color: var(--text-dim);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.02rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            color: var(--text-light);
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--bg-card), var(--bg-darker));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.08), transparent 70%);
            pointer-events: none;
        }
        .cta-block h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-block p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }

        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(139, 92, 246, 0.45);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--text-light);
            border: 2px solid var(--border-color);
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 28px;
            margin-top: auto;
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-light);
        }
        .site-footer .footer-desc {
            color: var(--text-dim);
            font-size: 0.92rem;
            max-width: 400px;
            line-height: 1.7;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 32px;
            justify-content: flex-end;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-divider {
            border-color: var(--border-color);
            margin: 24px 0 18px;
            opacity: 0.6;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            color: var(--text-dim);
            font-size: 0.85rem;
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 200px;
            }
            .page-header h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
                box-shadow: 4px 0 40px rgba(0, 0, 0, 0.6);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-toggle {
                display: flex;
            }
            .sidebar-overlay.open {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .page-header {
                padding: 40px 0 32px;
            }
            .page-header h1 {
                font-size: 1.8rem;
            }
            .page-header p {
                font-size: 1rem;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .version-table th,
            .version-table td {
                padding: 10px 12px;
                font-size: 0.82rem;
            }
            .cta-block {
                padding: 36px 20px;
            }
            .cta-block h3 {
                font-size: 1.4rem;
            }
            .site-footer .footer-links {
                justify-content: flex-start;
                margin-top: 12px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 6px;
            }
            .sidebar-logo {
                font-size: 1rem;
                padding-bottom: 20px;
                margin-bottom: 18px;
            }
            .sidebar-nav .nav-item {
                padding: 10px 14px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-custom {
                padding: 20px 16px;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .version-table {
                font-size: 0.75rem;
            }
            .version-table th,
            .version-table td {
                padding: 8px 6px;
            }
            .btn-custom {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 16px;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }

        /* ===== 小工具 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mb-gap {
            margin-bottom: 32px;
        }
        .gap-row {
            row-gap: 24px;
        }
        .badge-platform {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(16, 185, 129, 0.15);
            color: #10B981;
            margin-right: 6px;
        }
        .badge-platform.ios {
            background: rgba(96, 165, 250, 0.15);
            color: #60A5FA;
        }
        .badge-platform.android {
            background: rgba(251, 191, 36, 0.15);
            color: #FBBF24;
        }
        .img-cover-wrap {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .img-cover-wrap:hover {
            box-shadow: var(--shadow-md);
            transform: scale(1.01);
        }
        .img-cover-wrap img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }
        .highlight-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #1a1a2e;
        --primary-light: #2d2d4a;
        --secondary: #c9a84c;
        --secondary-light: #e8c84a;
        --accent: #f5a623;
        --bg-body: #f8f7f4;
        --bg-card: #ffffff;
        --bg-dark: #1a1a2e;
        --text-primary: #1a1a2e;
        --text-secondary: #4a4a6a;
        --text-muted: #8888a0;
        --text-light: #f0f0f5;
        --text-white: #ffffff;
        --border: #e2e0dc;
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
        --shadow-md: 0 8px 30px rgba(26, 26, 46, 0.10);
        --shadow-lg: 0 20px 50px rgba(26, 26, 46, 0.14);
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        --sidebar-width: 220px;
        --header-height: 0px;
    }

    /* ===== Reset & Base ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
    }
    body {
        font-family: var(--font-sans);
        background: var(--bg-body);
        color: var(--text-primary);
        line-height: 1.7;
        font-size: 16px;
        overflow-x: hidden;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--secondary);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
    }

    /* ===== 容器 ===== */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    /* ===== App Shell 布局 ===== */
    .app-wrapper {
        display: flex;
        min-height: 100vh;
    }

    /* ===== 侧边栏导航 ===== */
    .sidebar {
        width: var(--sidebar-width);
        background: var(--bg-dark);
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        z-index: 1050;
        padding: 28px 0 20px;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
        transition: transform var(--transition);
    }
    .sidebar-brand {
        padding: 0 20px 28px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        margin-bottom: 12px;
    }
    .sidebar-brand .logo {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--text-white);
        display: flex;
        align-items: center;
        gap: 10px;
        letter-spacing: 0.3px;
        line-height: 1.3;
    }
    .sidebar-brand .logo i {
        color: var(--secondary);
        font-size: 1.4rem;
    }
    .sidebar-nav {
        display: flex;
        flex-direction: column;
        gap: 2px;
        padding: 0 12px;
        flex: 1;
        overflow-y: auto;
    }
    .sidebar-nav .nav-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 14px;
        border-radius: var(--radius-sm);
        color: rgba(255, 255, 255, 0.65);
        font-size: 0.95rem;
        font-weight: 500;
        transition: var(--transition);
        text-decoration: none;
    }
    .sidebar-nav .nav-item i {
        width: 20px;
        text-align: center;
        font-size: 1.05rem;
        color: rgba(255, 255, 255, 0.4);
        transition: var(--transition);
    }
    .sidebar-nav .nav-item:hover {
        background: rgba(255, 255, 255, 0.06);
        color: var(--text-white);
    }
    .sidebar-nav .nav-item:hover i {
        color: var(--secondary-light);
    }
    .sidebar-nav .nav-item.active {
        background: rgba(201, 168, 76, 0.15);
        color: var(--secondary-light);
    }
    .sidebar-nav .nav-item.active i {
        color: var(--secondary);
    }
    .sidebar-nav .nav-divider {
        height: 1px;
        background: rgba(255, 255, 255, 0.06);
        margin: 8px 14px;
    }

    /* ===== 主内容区 ===== */
    .main-content {
        margin-left: var(--sidebar-width);
        flex: 1;
        min-width: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
    }

    /* ===== 文章 Banner ===== */
    .article-banner {
        position: relative;
        background: var(--bg-dark);
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        padding: 80px 40px 70px;
        min-height: 320px;
        display: flex;
        align-items: flex-end;
        isolation: isolate;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(26, 26, 46, 0.88) 30%, rgba(26, 26, 46, 0.50) 80%, transparent 100%);
        z-index: 0;
    }
    .article-banner .banner-content {
        position: relative;
        z-index: 1;
        max-width: 800px;
    }
    .article-banner .banner-category {
        display: inline-block;
        background: var(--secondary);
        color: var(--bg-dark);
        padding: 4px 16px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 600;
        letter-spacing: 0.5px;
        text-transform: uppercase;
        margin-bottom: 16px;
    }
    .article-banner h1 {
        font-size: 2.4rem;
        font-weight: 800;
        color: var(--text-white);
        line-height: 1.25;
        margin-bottom: 16px;
        letter-spacing: -0.3px;
    }
    .article-banner .banner-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        color: rgba(255, 255, 255, 0.7);
        font-size: 0.9rem;
    }
    .article-banner .banner-meta span {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-banner .banner-meta i {
        color: var(--secondary-light);
    }

    /* ===== 文章正文区 ===== */
    .article-body-section {
        padding: 50px 40px 40px;
        background: var(--bg-body);
    }
    .article-body-wrapper {
        max-width: 800px;
        margin: 0 auto;
    }
    .article-body {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        padding: 48px 50px;
        box-shadow: var(--shadow-sm);
        font-size: 1.05rem;
        line-height: 1.9;
        color: var(--text-primary);
    }
    .article-body h2 {
        font-size: 1.6rem;
        font-weight: 700;
        margin-top: 40px;
        margin-bottom: 16px;
        color: var(--primary);
        letter-spacing: -0.2px;
    }
    .article-body h3 {
        font-size: 1.25rem;
        font-weight: 600;
        margin-top: 32px;
        margin-bottom: 12px;
        color: var(--text-secondary);
    }
    .article-body p {
        margin-bottom: 18px;
    }
    .article-body ul,
    .article-body ol {
        margin-bottom: 18px;
        padding-left: 24px;
    }
    .article-body li {
        margin-bottom: 8px;
    }
    .article-body img {
        border-radius: var(--radius-sm);
        margin: 28px 0;
        box-shadow: var(--shadow-sm);
    }
    .article-body blockquote {
        border-left: 4px solid var(--secondary);
        background: rgba(201, 168, 76, 0.06);
        padding: 20px 24px;
        margin: 28px 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary);
        font-style: italic;
    }
    .article-body a {
        color: var(--secondary);
        text-decoration: underline;
        text-underline-offset: 2px;
    }
    .article-body a:hover {
        color: var(--accent);
    }

    /* ===== 文章标签 & 分享 ===== */
    .article-footer-bar {
        max-width: 800px;
        margin: 28px auto 0;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        padding: 20px 0 10px;
        border-top: 1px solid var(--border);
    }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .article-tags .tag {
        display: inline-block;
        background: var(--bg-card);
        border: 1px solid var(--border);
        padding: 4px 16px;
        border-radius: 20px;
        font-size: 0.82rem;
        color: var(--text-secondary);
        transition: var(--transition);
    }
    .article-tags .tag:hover {
        background: var(--secondary);
        border-color: var(--secondary);
        color: var(--text-white);
    }
    .article-share {
        display: flex;
        align-items: center;
        gap: 12px;
        color: var(--text-muted);
        font-size: 0.9rem;
    }
    .article-share a {
        color: var(--text-muted);
        font-size: 1.2rem;
        transition: var(--transition);
    }
    .article-share a:hover {
        color: var(--secondary);
        transform: translateY(-2px);
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 50px 40px 60px;
        background: var(--bg-body);
    }
    .related-section .section-title {
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 32px;
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .related-section .section-title i {
        color: var(--secondary);
        font-size: 1.4rem;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }
    .related-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
    }
    .related-card .card-img {
        height: 180px;
        background-size: cover;
        background-position: center;
        position: relative;
    }
    .related-card .card-img .card-cat {
        position: absolute;
        top: 14px;
        left: 14px;
        background: var(--secondary);
        color: var(--bg-dark);
        font-size: 0.7rem;
        font-weight: 600;
        padding: 3px 12px;
        border-radius: 12px;
        letter-spacing: 0.3px;
    }
    .related-card .card-body {
        padding: 20px 22px 22px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .related-card .card-body h3 {
        font-size: 1.05rem;
        font-weight: 600;
        margin-bottom: 8px;
        line-height: 1.4;
        color: var(--text-primary);
        transition: var(--transition);
    }
    .related-card .card-body h3:hover {
        color: var(--secondary);
    }
    .related-card .card-body p {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 12px;
        flex: 1;
    }
    .related-card .card-body .card-meta {
        font-size: 0.8rem;
        color: var(--text-muted);
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top: 1px solid var(--border);
        padding-top: 12px;
        margin-top: auto;
    }
    .related-card .card-body .card-meta span {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .related-card .card-body .card-meta i {
        color: var(--secondary);
        font-size: 0.75rem;
    }

    /* ===== CTA 区块 ===== */
    .cta-section {
        padding: 60px 40px;
        background: var(--bg-dark);
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        position: relative;
        isolation: isolate;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(26, 26, 46, 0.92) 30%, rgba(26, 26, 46, 0.70) 100%);
        z-index: 0;
    }
    .cta-section .cta-content {
        position: relative;
        z-index: 1;
        text-align: center;
        max-width: 700px;
        margin: 0 auto;
    }
    .cta-section h2 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 16px;
    }
    .cta-section p {
        color: rgba(255, 255, 255, 0.75);
        font-size: 1.1rem;
        margin-bottom: 28px;
        line-height: 1.7;
    }
    .cta-section .btn-cta {
        display: inline-block;
        background: var(--secondary);
        color: var(--bg-dark);
        padding: 16px 48px;
        border-radius: 50px;
        font-weight: 700;
        font-size: 1.05rem;
        border: none;
        transition: var(--transition);
        text-decoration: none;
        letter-spacing: 0.3px;
        box-shadow: 0 8px 30px rgba(201, 168, 76, 0.35);
    }
    .cta-section .btn-cta:hover {
        background: var(--secondary-light);
        transform: translateY(-3px);
        box-shadow: 0 12px 40px rgba(201, 168, 76, 0.45);
        color: var(--bg-dark);
    }
    .cta-section .btn-cta i {
        margin-right: 10px;
    }

    /* ===== 内容未找到 ===== */
    .not-found-section {
        padding: 80px 40px;
        text-align: center;
        min-height: 50vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .not-found-section .not-found-box {
        max-width: 480px;
    }
    .not-found-section .not-found-box i {
        font-size: 4rem;
        color: var(--text-muted);
        margin-bottom: 20px;
    }
    .not-found-section .not-found-box h2 {
        font-size: 1.8rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 12px;
    }
    .not-found-section .not-found-box p {
        color: var(--text-muted);
        margin-bottom: 24px;
    }
    .not-found-section .not-found-box .btn-back {
        display: inline-block;
        background: var(--primary);
        color: var(--text-white);
        padding: 12px 36px;
        border-radius: 50px;
        font-weight: 600;
        transition: var(--transition);
        text-decoration: none;
    }
    .not-found-section .not-found-box .btn-back:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
        color: var(--text-white);
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--bg-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 48px 40px 30px;
        margin-top: auto;
    }
    .site-footer .footer-brand {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .site-footer .footer-brand i {
        color: var(--secondary);
    }
    .site-footer .footer-desc {
        font-size: 0.9rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.55);
        max-width: 400px;
    }
    .site-footer .footer-links {
        display: flex;
        flex-wrap: wrap;
        gap: 20px 30px;
        justify-content: flex-end;
    }
    .site-footer .footer-links a {
        color: rgba(255, 255, 255, 0.6);
        font-size: 0.9rem;
        transition: var(--transition);
        text-decoration: none;
    }
    .site-footer .footer-links a:hover {
        color: var(--secondary);
    }
    .site-footer .footer-divider {
        border-color: rgba(255, 255, 255, 0.06);
        margin: 28px 0 20px;
    }
    .site-footer .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        font-size: 0.82rem;
        color: rgba(255, 255, 255, 0.4);
    }
    .site-footer .footer-bottom a {
        color: rgba(255, 255, 255, 0.5);
        text-decoration: underline;
        text-underline-offset: 2px;
    }
    .site-footer .footer-bottom a:hover {
        color: var(--secondary);
    }

    /* ===== 移动端菜单按钮 ===== */
    .mobile-toggle {
        display: none;
        position: fixed;
        top: 16px;
        left: 16px;
        z-index: 1060;
        background: var(--bg-dark);
        color: var(--text-white);
        border: none;
        width: 44px;
        height: 44px;
        border-radius: 12px;
        font-size: 1.3rem;
        cursor: pointer;
        box-shadow: var(--shadow-md);
        transition: var(--transition);
    }
    .mobile-toggle:hover {
        background: var(--primary-light);
    }

    /* ===== 移动端遮罩 ===== */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.45);
        z-index: 1045;
        backdrop-filter: blur(4px);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .article-body {
            padding: 36px 32px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --sidebar-width: 0px;
        }
        .mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sidebar {
            transform: translateX(-100%);
        }
        .sidebar.open {
            transform: translateX(0);
        }
        .sidebar-overlay.active {
            display: block;
        }
        .main-content {
            margin-left: 0;
        }
        .article-banner {
            padding: 60px 24px 50px;
            min-height: 220px;
        }
        .article-banner h1 {
            font-size: 1.6rem;
        }
        .article-body-section {
            padding: 30px 16px 24px;
        }
        .article-body {
            padding: 24px 20px;
            font-size: 0.98rem;
            border-radius: var(--radius-sm);
        }
        .article-body h2 {
            font-size: 1.3rem;
        }
        .article-body h3 {
            font-size: 1.1rem;
        }
        .article-footer-bar {
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 0 8px;
        }
        .related-section {
            padding: 30px 16px 40px;
        }
        .related-section .section-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .related-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .related-card .card-img {
            height: 150px;
        }
        .cta-section {
            padding: 40px 24px;
        }
        .cta-section h2 {
            font-size: 1.4rem;
        }
        .cta-section p {
            font-size: 0.95rem;
        }
        .cta-section .btn-cta {
            padding: 14px 32px;
            font-size: 0.95rem;
        }
        .site-footer {
            padding: 32px 20px 24px;
        }
        .site-footer .footer-links {
            justify-content: flex-start;
            margin-top: 12px;
        }
        .site-footer .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 6px;
        }
        .site-footer .footer-desc {
            max-width: 100%;
        }
        .not-found-section {
            padding: 60px 24px;
        }
        .banner-meta {
            font-size: 0.8rem;
            gap: 12px;
        }
    }

    @media (max-width: 520px) {
        .article-banner {
            padding: 40px 18px 36px;
            min-height: 180px;
        }
        .article-banner h1 {
            font-size: 1.3rem;
        }
        .article-banner .banner-category {
            font-size: 0.7rem;
            padding: 3px 12px;
        }
        .article-body {
            padding: 18px 14px;
            font-size: 0.92rem;
        }
        .article-body h2 {
            font-size: 1.15rem;
        }
        .article-body blockquote {
            padding: 14px 16px;
            font-size: 0.92rem;
        }
        .related-card .card-body {
            padding: 16px 16px 18px;
        }
        .related-card .card-body h3 {
            font-size: 0.95rem;
        }
        .cta-section h2 {
            font-size: 1.2rem;
        }
        .cta-section .btn-cta {
            padding: 12px 24px;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            font-size: 1.1rem;
        }
        .mobile-toggle {
            width: 38px;
            height: 38px;
            font-size: 1.1rem;
            top: 12px;
            left: 12px;
        }
    }

    /* ===== 滚动条美化 ===== */
    .sidebar-nav::-webkit-scrollbar {
        width: 4px;
    }
    .sidebar-nav::-webkit-scrollbar-track {
        background: transparent;
    }
    .sidebar-nav::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.15);
        border-radius: 4px;
    }

    /* ===== 骨架过渡 ===== */
    .fade-in {
        animation: fadeIn 0.5s ease forwards;
    }
    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(12px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }