/* roulang page: index */
:root {
  --primary: #16635C;
  --primary-dark: #0F4A44;
  --accent: #D97B4A;
  --accent-dark: #C8663C;
  --bg-body: #F6F4EF;
  --bg-white: #FFFFFF;
  --bg-dark: #142B27;
  --bg-light: #F0EEE8;
  --text-dark: #1D2A2A;
  --text-light: #6E7A78;
  --text-faint: #9AA6A3;
  --border: #E2DDD3;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-sm: 0 8px 30px rgba(29, 42, 42, 0.06);
  --shadow-lg: 0 12px 36px rgba(29, 42, 42, 0.12);
  --transition: 0.2s ease;
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--text-dark);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

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

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
}

.container {
  max-width: 1200px;
}

.main-content {
  margin-left: 80px;
  min-height: 100vh;
}

/* ===== 左侧侧边栏 ===== */
.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 80px;
  height: 100vh;
  background: var(--bg-dark);
  z-index: 1040;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
  transition: transform var(--transition);
}

.sidebar-logo {
  height: 56px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  letter-spacing: -1px;
  line-height: 1;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-top: 28px;
  gap: 4px;
  padding: 0 8px;
  flex: 1;
}

.sidebar-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 4px;
  color: #A8B5B2;
  font-size: 12px;
  line-height: 1.4;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
  text-align: center;
}

.sidebar-nav .nav-item i {
  font-size: 18px;
  margin-bottom: 5px;
  display: block;
}

.sidebar-nav .nav-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.sidebar-nav .nav-item.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.sidebar-nav .nav-item.active::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 28px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.sidebar-footer {
  padding: 16px 0;
  color: rgba(255, 255, 255, 0.25);
  font-size: 11px;
  flex-shrink: 0;
  text-align: center;
}

/* ===== 移动端顶部栏 ===== */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg-dark);
  z-index: 1040;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 6px;
  border-radius: 6px;
  transition: background var(--transition);
}

.hamburger-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: #DCE5E2;
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger-btn:hover span {
  background: #fff;
}

.mobile-logo {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

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

.mobile-cta {
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 6px;
  transition: background var(--transition);
}

.mobile-cta:hover {
  background: var(--accent-dark);
  color: #fff;
}

/* ===== 移动端抽屉 ===== */
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 43, 39, 0.4);
  z-index: 1041;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-drawer-overlay.show {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: var(--bg-dark);
  z-index: 1042;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.drawer-close {
  position: absolute;
  top: 16px;
  right: 16px;
  color: #A8B5B2;
  font-size: 24px;
  line-height: 1;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.drawer-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.drawer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  padding: 20px 0 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 20px;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.drawer-nav a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  color: #A8B5B2;
  border-radius: 8px;
  font-size: 15px;
  transition: all var(--transition);
}

.drawer-nav a i {
  font-size: 17px;
  width: 20px;
  text-align: center;
}

.drawer-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.drawer-nav a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--accent);
  padding-left: 13px;
}

.drawer-copyright {
  color: rgba(255, 255, 255, 0.3);
  font-size: 12px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ===== 按钮 ===== */
.btn-primary-custom {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 13px 32px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary-custom:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(217, 123, 74, 0.32);
}

.btn-primary-custom:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(217, 123, 74, 0.25);
}

.btn-outline-custom {
  display: inline-block;
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  transition: all var(--transition);
  text-align: center;
}

.btn-outline-custom:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

.btn-outline-custom:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.25);
}

.btn-accent-outline {
  display: inline-block;
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  transition: all var(--transition);
  text-align: center;
}

.btn-accent-outline:hover {
  background: rgba(22, 99, 92, 0.1);
  color: var(--primary-dark);
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  min-height: 80vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(20, 43, 39, 0.92) 0%, rgba(20, 43, 39, 0.7) 60%, rgba(20, 43, 39, 0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding: 60px 0;
}

.hero-title {
  font-size: 38px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero-subtitle {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 560px;
}

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

/* ===== 特征点区 ===== */
.features-section {
  background: var(--bg-body);
  padding: 80px 0 70px;
}

.feature-item {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 36px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  height: 100%;
  text-align: left;
}

.feature-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(22, 99, 92, 0.25);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(22, 99, 92, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.feature-icon i {
  font-size: 22px;
  color: var(--primary);
}

.feature-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.4;
}

.feature-item p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== 三步上手 ===== */
.steps-section {
  background: var(--bg-light);
  padding: 80px 0;
}

.section-title-wrap {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.section-title-wrap h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
  letter-spacing: 0.3px;
  line-height: 1.3;
}

.section-title-wrap p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

.step-item {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
  height: 100%;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.step-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.step-num {
  font-size: 42px;
  font-weight: 300;
  color: var(--primary);
  line-height: 1;
  display: block;
  margin-bottom: 18px;
  font-family: Georgia, serif;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.step-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.step-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(22, 99, 92, 0.08);
  color: var(--primary);
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 500;
}

.step-arrow-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.step-arrow {
  font-size: 28px;
  color: var(--primary);
  opacity: 0.4;
  font-weight: 300;
}

/* ===== 案例证明 ===== */
.cases-section {
  background: var(--bg-white);
  padding: 80px 0;
}

.case-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  height: 100%;
  background: var(--bg-white);
}

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

.case-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.case-content {
  padding: 28px;
}

.case-stat {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.case-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-body);
  padding: 80px 0;
}

.accordion-custom .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card) !important;
  overflow: hidden;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(29, 42, 42, 0.03);
  background: var(--bg-white);
}

.accordion-custom .accordion-item:last-child {
  margin-bottom: 0;
}

.accordion-custom .accordion-button {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-dark);
  background: var(--bg-white);
  border: none;
  box-shadow: none;
  font-family: inherit;
  line-height: 1.5;
}

.accordion-custom .accordion-button::after {
  content: '\f067';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  background: none;
  color: var(--primary);
  font-size: 14px;
  width: auto;
  height: auto;
  margin-left: auto;
  transition: transform var(--transition);
}

.accordion-custom .accordion-button:not(.collapsed)::after {
  content: '\f068';
  transform: rotate(0deg);
}

.accordion-custom .accordion-button:not(.collapsed) {
  background: rgba(22, 99, 92, 0.04);
  color: var(--primary);
  border-bottom: 1px solid var(--border);
}

.accordion-custom .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(22, 99, 92, 0.15);
}

.accordion-custom .accordion-body {
  padding: 20px 24px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  background: var(--bg-white);
}

/* ===== CTA ===== */
.cta-section {
  background: var(--bg-dark);
  padding: 80px 0;
  text-align: center;
}

.cta-subtitle {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 1px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.cta-title {
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 28px;
  line-height: 1.3;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 最新信息 ===== */
.latest-section {
  background: var(--bg-white);
  padding: 80px 0 88px;
}

.latest-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.latest-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0;
}

.latest-more {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
}

.latest-more:hover {
  background: rgba(22, 99, 92, 0.06);
  color: var(--primary-dark);
  border-color: var(--primary);
}

.latest-more i {
  font-size: 12px;
}

.news-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: rgba(22, 99, 92, 0.2);
}

.news-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-category {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 12px;
  background: rgba(22, 99, 92, 0.1);
  color: var(--primary);
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 14px;
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--text-dark);
  transition: color var(--transition);
}

.news-card-link:hover .news-title {
  color: var(--primary);
}

.news-summary {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.news-date {
  font-size: 13px;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-date i {
  font-size: 12px;
}

.empty-state {
  background: var(--bg-white);
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
  padding: 60px 24px;
  text-align: center;
}

.empty-icon {
  font-size: 44px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 15px;
  color: var(--text-light);
  margin: 0;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #EFECE4;
  border-top: 1px solid var(--border);
  padding: 32px 0 24px;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.footer-brand {
  max-width: 420px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  display: block;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 14px;
  color: var(--text-light);
  transition: color var(--transition);
}

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

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-faint);
  margin: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  .app-sidebar {
    display: none !important;
  }
  
  .mobile-topbar {
    display: flex;
  }
  
  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }
  
  .hero-title {
    font-size: 28px;
  }
  
  .hero-section {
    min-height: 560px;
  }
  
  .hero-content {
    padding: 48px 0;
  }
}

@media (max-width: 767.98px) {
  .features-section,
  .steps-section,
  .cases-section,
  .faq-section,
  .cta-section,
  .latest-section {
    padding: 56px 0;
  }
  
  .section-title-wrap {
    margin-bottom: 36px;
  }
  
  .section-title-wrap h2 {
    font-size: 24px;
  }
  
  .hero-title {
    font-size: 26px;
  }
  
  .hero-subtitle {
    font-size: 15px;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero-actions .btn-primary-custom,
  .hero-actions .btn-outline-custom {
    width: 100%;
  }
  
  .step-arrow-wrap {
    display: none;
  }
  
  .latest-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .footer-top {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 575.98px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  
  .cta-title {
    font-size: 24px;
  }
  
  .cta-section .btn-primary-custom {
    width: 100%;
  }
  
  .feature-item {
    padding: 28px 20px;
  }
  
  .step-item {
    padding: 24px 20px;
  }
  
  .news-card {
    padding: 20px;
  }
  
  .footer-nav {
    gap: 16px;
    flex-direction: column;
  }
}

/* roulang page: category1 */
:root {
      --primary: #16635C;
      --primary-dark: #0F4A44;
      --accent: #D97B4A;
      --accent-dark: #C8663C;
      --bg: #F6F4EF;
      --bg-white: #FFFFFF;
      --bg-gray: #F1EFE9;
      --bg-dark: #142B27;
      --text: #1D2A2A;
      --text-light: #6E7A78;
      --border: #E2DDD3;
      --radius: 14px;
      --radius-sm: 8px;
      --radius-pill: 999px;
      --shadow: 0 8px 30px rgba(29, 42, 42, 0.06);
      --shadow-hover: 0 12px 36px rgba(29, 42, 42, 0.12);
      --transition: 0.2s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

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

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

    img {
      max-width: 100%;
      height: auto;
      border-radius: var(--radius);
    }

    .container {
      max-width: 1200px;
    }

    /* ===== Sidebar ===== */
    .app-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 80px;
      background: var(--bg-dark);
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 18px 0 16px;
      z-index: 1045;
    }

    .sidebar-brand {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 2px;
      padding: 10px 0 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      width: 100%;
    }

    .brand-mark {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--accent);
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: -0.5px;
    }

    .brand-name {
      display: block;
      color: #DCE5E2;
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 2px;
    }

    .sidebar-nav {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
      padding-top: 14px;
    }

    .sidebar-nav .nav-item {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 100%;
      padding: 14px 0;
      color: rgba(220, 229, 226, 0.72);
      font-size: 12px;
      gap: 5px;
      transition: var(--transition);
    }

    .sidebar-nav .nav-item i {
      font-size: 18px;
    }

    .sidebar-nav .nav-item:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.04);
    }

    .sidebar-nav .nav-item.active {
      color: #fff;
      font-weight: 600;
    }

    .sidebar-nav .nav-item.active::before {
      content: "";
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 24px;
      border-radius: 0 4px 4px 0;
      background: var(--accent);
    }

    .sidebar-foot {
      color: rgba(220, 229, 226, 0.35);
      font-size: 10px;
      padding-top: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      width: 100%;
      text-align: center;
    }

    .main-wrap {
      margin-left: 80px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* ===== Mobile header ===== */
    .mobile-header {
      position: sticky;
      top: 0;
      z-index: 1035;
      display: none;
      align-items: center;
      justify-content: space-between;
      height: 56px;
      background: var(--bg-dark);
      padding: 0 16px;
    }

    .menu-toggle {
      background: transparent;
      border: none;
      color: #DCE5E2;
      font-size: 20px;
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .menu-toggle:hover,
    .menu-toggle:focus {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
    }

    .menu-toggle:focus {
      outline: 2px solid rgba(217, 123, 74, 0.6);
      outline-offset: 2px;
    }

    .mobile-brand {
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 1px;
    }

    .mobile-cta {
      background: var(--accent);
      color: #fff;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: var(--radius-pill);
    }

    .mobile-cta:hover {
      background: var(--accent-dark);
      color: #fff;
    }

    /* ===== Drawer ===== */
    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.4);
      z-index: 1040;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }

    .drawer-overlay.show {
      opacity: 1;
      visibility: visible;
    }

    .drawer {
      position: fixed;
      top: 0;
      left: -300px;
      bottom: 0;
      width: 280px;
      background: var(--bg-dark);
      z-index: 1050;
      display: flex;
      flex-direction: column;
      padding: 20px;
      transition: left 0.3s ease;
    }

    .drawer.open {
      left: 0;
    }

    .drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 18px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .drawer-brand {
      color: #fff;
      font-size: 17px;
      font-weight: 700;
    }

    .drawer-close {
      background: transparent;
      border: none;
      color: #DCE5E2;
      font-size: 18px;
      width: 34px;
      height: 34px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .drawer-close:hover {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
    }

    .drawer-nav {
      flex: 1;
      display: flex;
      flex-direction: column;
      padding-top: 18px;
      gap: 6px;
    }

    .drawer-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      color: rgba(220, 229, 226, 0.8);
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      font-size: 15px;
    }

    .drawer-nav a i {
      width: 20px;
      text-align: center;
      color: rgba(220, 229, 226, 0.6);
    }

    .drawer-nav a:hover {
      background: rgba(255, 255, 255, 0.06);
      color: #fff;
    }

    .drawer-nav a.active {
      background: rgba(217, 123, 74, 0.16);
      color: #fff;
      font-weight: 600;
    }

    .drawer-nav a.active i {
      color: var(--accent);
    }

    .drawer-footer {
      color: rgba(220, 229, 226, 0.35);
      font-size: 12px;
      padding-top: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    /* ===== Buttons ===== */
    .btn {
      border-radius: var(--radius-sm);
      font-weight: 600;
      padding: 10px 24px;
      transition: var(--transition);
      font-size: 15px;
    }

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

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

    .btn-main:focus {
      outline: none;
      box-shadow: 0 0 0 4px rgba(217, 123, 74, 0.25);
    }

    .btn-outline-main {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }

    .btn-outline-main:hover {
      background: rgba(22, 99, 92, 0.1);
      color: var(--primary);
    }

    .btn-outline-main:focus {
      outline: none;
      box-shadow: 0 0 0 4px rgba(22, 99, 92, 0.2);
    }

    .btn-outline-light {
      background: transparent;
      color: #fff;
      border: 1.5px solid rgba(255, 255, 255, 0.7);
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
    }

    .btn-outline-light:focus {
      outline: none;
      box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.2);
    }

    /* ===== Hero ===== */
    .page-hero {
      background: linear-gradient(90deg, rgba(20, 43, 39, 0.92) 0%, rgba(20, 43, 39, 0.72) 55%, rgba(20, 43, 39, 0.45) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      padding: 72px 0;
      color: #fff;
    }

    .hero-eyebrow {
      font-size: 14px;
      letter-spacing: 2px;
      color: rgba(255, 255, 255, 0.7);
      text-transform: uppercase;
      margin-bottom: 10px;
    }

    .page-hero h1 {
      font-size: 40px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #fff;
    }

    .hero-subtitle {
      font-size: 18px;
      color: rgba(255, 255, 255, 0.88);
      max-width: 620px;
      line-height: 1.7;
      margin-bottom: 30px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* ===== Section common ===== */
    section {
      padding: 72px 0;
    }

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

    .section-tag {
      display: inline-block;
      background: rgba(22, 99, 92, 0.08);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      margin-bottom: 12px;
    }

    .section-head h2 {
      font-size: 30px;
      font-weight: 700;
      color: var(--text);
      line-height: 1.35;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-light);
      font-size: 16px;
      max-width: 640px;
    }

    /* ===== Feature strip ===== */
    .feature-strip {
      background: var(--bg);
    }

    .feature-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 24px;
      height: 100%;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

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

    .feature-icon {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: rgba(22, 99, 92, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
    }

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

    .feature-card p {
      color: var(--text-light);
      font-size: 15px;
      margin-bottom: 0;
    }

    /* ===== Content direction ===== */
    .content-section {
      background: var(--bg-white);
    }

    .direction-card {
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      background: var(--bg-white);
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

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

    .direction-card .direction-img {
      aspect-ratio: 4 / 3;
      overflow: hidden;
    }

    .direction-card .direction-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 0;
      transition: transform 0.35s ease;
    }

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

    .direction-card h3 {
      font-size: 18px;
      font-weight: 600;
      padding: 18px 18px 6px;
      margin-bottom: 0;
    }

    .direction-card p {
      color: var(--text-light);
      font-size: 14px;
      padding: 0 18px 20px;
      margin-bottom: 0;
    }

    /* ===== Proof ===== */
    .proof-section {
      background: var(--bg-gray);
    }

    .proof-content h2 {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 16px;
    }

    .proof-content>p {
      color: var(--text-light);
      font-size: 16px;
      margin-bottom: 24px;
    }

    .proof-list {
      list-style: none;
      padding: 0;
      margin: 0 0 28px;
    }

    .proof-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 14px;
      color: var(--text);
      font-size: 15px;
    }

    .proof-num {
      flex-shrink: 0;
      display: inline-block;
      background: rgba(22, 99, 92, 0.1);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 2px 10px;
      border-radius: var(--radius-pill);
    }

    .proof-media img {
      width: 100%;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    /* ===== Process ===== */
    .process-section {
      background: var(--bg-white);
    }

    .process-item {
      text-align: center;
      padding: 28px 20px;
      height: 100%;
    }

    .process-num {
      display: inline-block;
      font-size: 44px;
      font-weight: 200;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }

    .process-item h3 {
      font-size: 19px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .process-item p {
      color: var(--text-light);
      font-size: 15px;
      max-width: 260px;
      margin: 0 auto;
    }

    .process-arrow {
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--border);
      font-size: 22px;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg);
    }

    .faq-list {
      max-width: 820px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.open {
      border-color: rgba(22, 99, 92, 0.35);
      box-shadow: var(--shadow);
    }

    .faq-button {
      width: 100%;
      background: var(--bg-white);
      border: none;
      padding: 20px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      text-align: left;
      transition: var(--transition);
    }

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

    .faq-button:focus {
      outline: none;
      box-shadow: inset 0 0 0 3px rgba(22, 99, 92, 0.2);
    }

    .faq-button::after {
      display: none;
    }

    .faq-button i {
      color: var(--text-light);
      font-size: 16px;
      transition: transform 0.3s ease, color 0.2s ease;
      flex-shrink: 0;
    }

    .faq-item.open .faq-button i {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .faq-body {
      padding: 0 22px 20px;
      color: var(--text-light);
      font-size: 15px;
      line-height: 1.7;
      background: var(--bg-white);
      border-top: 1px solid var(--border);
      padding-top: 16px;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--bg-dark);
      color: #fff;
      text-align: center;
      padding: 72px 0;
    }

    .cta-sub {
      color: rgba(255, 255, 255, 0.6);
      font-size: 14px;
      letter-spacing: 2px;
      margin-bottom: 10px;
    }

    .cta-section h2 {
      font-size: 30px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 26px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #EFECE4;
      border-top: 1px solid var(--border);
      padding: 32px 0;
      margin-top: auto;
    }

    .footer-top {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 18px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .footer-logo {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      background: rgba(22, 99, 92, 0.1);
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      white-space: nowrap;
    }

    .footer-desc {
      color: var(--text-light);
      font-size: 14px;
      margin: 0;
      max-width: 420px;
    }

    .footer-nav {
      display: flex;
      gap: 24px;
    }

    .footer-nav a {
      color: var(--text-light);
      font-size: 14px;
      font-weight: 500;
    }

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

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: 16px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
    }

    .footer-bottom p {
      color: var(--text-light);
      font-size: 13px;
      margin: 0;
    }

    .footer-technical {
      color: rgba(110, 122, 120, 0.75);
      font-size: 13px;
    }

    /* ===== Responsive ===== */
    @media (max-width: 991.98px) {
      .app-sidebar {
        display: none;
      }

      .main-wrap {
        margin-left: 0;
      }

      .mobile-header {
        display: flex;
      }
    }

    @media (max-width: 767.98px) {
      section {
        padding: 56px 0;
      }

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

      .page-hero h1 {
        font-size: 30px;
      }

      .hero-subtitle {
        font-size: 16px;
      }

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

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

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

      .footer-top {
        flex-direction: column;
        align-items: flex-start;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

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

    @media (max-width: 575.98px) {
      .page-hero h1 {
        font-size: 26px;
      }

      .hero-subtitle {
        font-size: 15px;
      }

      .process-item {
        padding: 20px 16px;
      }

      .btn {
        padding: 10px 18px;
      }

      .direction-card h3 {
        font-size: 17px;
      }
    }

/* roulang page: article */
:root {
      --primary: #16635C;
      --primary-dark: #134F49;
      --accent: #D97B4A;
      --accent-dark: #C8663C;
      --bg: #F6F4EF;
      --bg-white: #FFFFFF;
      --dark: #1D2A2A;
      --text-light: #6E7A78;
      --border: #E2DDD3;
      --sidebar-bg: #142B27;
      --sidebar-text: #DCE5E2;
      --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", sans-serif;
      --radius: 14px;
      --radius-btn: 8px;
      --shadow: 0 8px 30px rgba(29, 42, 42, 0.06);
      --shadow-hover: 0 12px 36px rgba(29, 42, 42, 0.12);
      --transition: all .2s ease;
    }

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

    html, body {
      margin: 0;
      padding: 0;
    }

    body {
      font-family: var(--font-main);
      font-size: 16px;
      line-height: 1.7;
      color: var(--dark);
      background: var(--bg);
    }

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

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color .2s ease;
    }

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

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

    /* ---------- 左侧 App Shell 导航 ---------- */
    .app-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: 78px;
      height: 100vh;
      background: var(--sidebar-bg);
      z-index: 1000;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 18px 0 14px;
    }

    .sidebar-logo {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 54px;
      height: 54px;
      background: rgba(255, 255, 255, 0.10);
      border-radius: 14px;
      text-decoration: none;
      margin-bottom: 30px;
      transition: background .2s ease;
    }

    .sidebar-logo:hover {
      background: rgba(255, 255, 255, 0.16);
    }

    .logo-mark {
      font-size: 16px;
      font-weight: 800;
      color: #fff;
      letter-spacing: .02em;
      line-height: 1;
    }

    .logo-sub {
      font-size: 9px;
      color: rgba(255, 255, 255, 0.65);
      margin-top: 3px;
      letter-spacing: .18em;
      line-height: 1;
    }

    .sidebar-nav {
      width: 100%;
      display: flex;
      flex-direction: column;
    }

    .nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 14px 0 12px;
      color: rgba(220, 229, 226, 0.72);
      font-size: 12px;
      line-height: 1.3;
      border-left: 3px solid transparent;
      transition: background .2s ease, color .2s ease, border-color .2s ease;
      text-decoration: none;
    }

    .nav-item i {
      font-size: 18px;
      margin-bottom: 6px;
    }

    .nav-item:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.06);
    }

    .nav-item.active {
      color: #fff;
      border-left-color: var(--accent);
      background: rgba(255, 255, 255, 0.04);
    }

    .sidebar-foot {
      margin-top: auto;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(220, 229, 226, 0.55);
      font-size: 12px;
    }

    /* ---------- 移动端顶栏 / 抽屉 ---------- */
    .mobile-header {
      display: none;
      position: sticky;
      top: 0;
      height: 56px;
      background: var(--sidebar-bg);
      z-index: 900;
      align-items: center;
      padding: 0 16px;
      color: #fff;
    }

    .menu-btn {
      background: none;
      border: none;
      color: #fff;
      font-size: 20px;
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      transition: background .2s ease;
    }

    .menu-btn:hover {
      background: rgba(255, 255, 255, 0.08);
    }

    .mobile-brand {
      flex: 1;
      text-align: center;
      font-weight: 700;
      font-size: 16px;
      letter-spacing: .02em;
    }

    .mobile-cta {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 13px;
      color: #fff;
      background: var(--accent);
      padding: 7px 14px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: 600;
      border: none;
      transition: background .2s ease;
    }

    .mobile-cta:hover {
      background: var(--accent-dark);
      color: #fff;
    }

    .drawer-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(20, 30, 30, 0.45);
      z-index: 1100;
      opacity: 0;
      transition: opacity .25s ease;
    }

    .drawer-overlay.show {
      display: block;
      opacity: 1;
    }

    .drawer-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 280px;
      height: 100vh;
      background: var(--sidebar-bg);
      z-index: 1200;
      transform: translateX(-100%);
      transition: transform .28s ease;
      display: flex;
      flex-direction: column;
      padding: 22px 18px 20px;
    }

    .drawer-menu.open {
      transform: translateX(0);
    }

    .drawer-close {
      position: absolute;
      top: 16px;
      right: 16px;
      background: none;
      border: none;
      color: #fff;
      font-size: 22px;
      width: 36px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      transition: background .2s ease;
    }

    .drawer-close:hover {
      background: rgba(255, 255, 255, 0.08);
    }

    .drawer-brand {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 30px;
      letter-spacing: .02em;
    }

    .drawer-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .drawer-nav a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 12px;
      color: rgba(220, 229, 226, 0.75);
      font-size: 15px;
      border-radius: 8px;
      text-decoration: none;
      transition: background .2s ease, color .2s ease;
    }

    .drawer-nav a:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.06);
    }

    .drawer-nav a.active {
      color: #fff;
      background: rgba(255, 255, 255, 0.08);
    }

    .drawer-nav a i {
      width: 20px;
      text-align: center;
    }

    .drawer-foot {
      margin-top: auto;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 12px;
      color: rgba(220, 229, 226, 0.5);
    }

    /* ---------- 主内容区 ---------- */
    .main-wrapper {
      margin-left: 78px;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    .container {
      max-width: 1200px;
      padding-left: 24px;
      padding-right: 24px;
      margin: 0 auto;
      width: 100%;
    }

    /* ---------- 文章 Banner ---------- */
    .article-banner {
      background: linear-gradient(90deg, rgba(20, 43, 39, 0.94) 0%, rgba(20, 43, 39, 0.78) 65%, rgba(20, 43, 39, 0.55) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      padding: 62px 0 46px;
      color: #fff;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .meta-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 22px;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.72);
      margin: 0;
      flex-wrap: wrap;
      background: transparent;
    }

    .breadcrumb a {
      color: rgba(255, 255, 255, 0.82);
      text-decoration: none;
      transition: color .2s ease;
    }

    .breadcrumb a:hover {
      color: #fff;
    }

    .breadcrumb .sep {
      color: rgba(255, 255, 255, 0.35);
      font-size: 12px;
    }

    .breadcrumb .current {
      color: rgba(255, 255, 255, 0.9);
    }

    .meta-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-wrap: wrap;
    }

    .meta-actions time {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.66);
    }

    .badge-cat {
      display: inline-block;
      padding: 5px 14px;
      background: rgba(217, 123, 74, 0.92);
      color: #fff;
      font-size: 12px;
      border-radius: 999px;
      font-weight: 600;
      letter-spacing: .02em;
      text-decoration: none;
      border: none;
      transition: background .2s ease;
    }

    .badge-cat:hover {
      background: var(--accent-dark);
      color: #fff;
    }

    .article-title {
      font-size: 34px;
      font-weight: 700;
      line-height: 1.35;
      margin: 0;
      max-width: 820px;
      letter-spacing: .01em;
      color: #fff;
    }

    /* ---------- 正文区 ---------- */
    .article-content-wrap {
      padding: 56px 0 40px;
      background: var(--bg);
      flex: 1;
    }

    .article-body {
      max-width: 800px;
      margin: 0 auto;
      font-size: 16px;
      line-height: 1.8;
      color: var(--dark);
      background: var(--bg-white);
      padding: 48px 52px;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
    }

    .article-body p {
      margin: 0 0 22px;
    }

    .article-body h2 {
      font-size: 24px;
      font-weight: 700;
      margin: 42px 0 16px;
      padding-top: 8px;
      line-height: 1.4;
      color: var(--dark);
    }

    .article-body h3 {
      font-size: 19px;
      font-weight: 600;
      margin: 32px 0 14px;
      line-height: 1.45;
      color: var(--dark);
    }

    .article-body ul,
    .article-body ol {
      margin: 16px 0 22px;
      padding-left: 24px;
    }

    .article-body li {
      margin: 8px 0;
    }

    .article-body blockquote {
      border-left: 4px solid var(--primary);
      margin: 26px 0;
      padding: 14px 20px;
      background: rgba(22, 99, 92, 0.06);
      border-radius: 0 8px 8px 0;
      color: var(--text-light);
    }

    .article-body img {
      border-radius: 12px;
      margin: 26px 0;
    }

    .article-body a {
      color: var(--primary);
      text-decoration: underline;
    }

    .article-body table {
      width: 100%;
      border-collapse: collapse;
      margin: 26px 0;
    }

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

    .article-body th {
      background: #F0EDE6;
      font-weight: 600;
    }

    /* ---------- 空状态 ---------- */
    .article-empty {
      max-width: 800px;
      margin: 0 auto;
      text-align: center;
      padding: 64px 24px;
      background: var(--bg-white);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
    }

    .empty-icon {
      font-size: 46px;
      color: #C9C2B4;
      margin-bottom: 18px;
      display: block;
    }

    .article-empty p {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-light);
      margin-bottom: 22px;
    }

    /* ---------- 按钮 ---------- */
    .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      padding: 12px 28px;
      border: none;
      border-radius: var(--radius-btn);
      text-decoration: none;
      transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
      min-height: 44px;
    }

    .btn-primary-custom:hover {
      background: var(--accent-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 10px 22px rgba(217, 123, 74, 0.22);
    }

    .btn-primary-custom:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(217, 123, 74, 0.25);
    }

    .btn-outline-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: transparent;
      color: var(--primary);
      font-size: 15px;
      font-weight: 600;
      padding: 11px 26px;
      border: 1.5px solid var(--primary);
      border-radius: var(--radius-btn);
      text-decoration: none;
      transition: background .2s ease, color .2s ease, box-shadow .2s ease;
      min-height: 44px;
    }

    .btn-outline-custom:hover {
      background: rgba(22, 99, 92, 0.1);
      color: var(--primary-dark);
    }

    .btn-outline-custom:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(22, 99, 92, 0.15);
    }

    /* ---------- 相关推荐 ---------- */
    .related-section {
      padding: 52px 0 64px;
      background: var(--bg);
      border-top: 1px solid var(--border);
    }

    .related-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 10px;
    }

    .related-header h2 {
      font-size: 24px;
      font-weight: 700;
      margin: 0;
      color: var(--dark);
    }

    .related-more {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      text-decoration: none;
      transition: color .2s ease, gap .2s ease;
    }

    .related-more:hover {
      color: var(--primary-dark);
      gap: 12px;
    }

    .related-more i {
      font-size: 12px;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .related-card {
      background: var(--bg-white);
      border-radius: var(--radius);
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform .2s ease, box-shadow .2s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
      text-decoration: none;
    }

    .related-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }

    .related-card .card-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
    }

    .card-body {
      padding: 20px 22px 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .card-tag {
      align-self: flex-start;
      font-size: 12px;
      color: var(--primary);
      background: rgba(22, 99, 92, 0.08);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
      font-weight: 600;
    }

    .related-card h3 {
      font-size: 17px;
      font-weight: 600;
      line-height: 1.55;
      margin: 0 0 10px;
      color: var(--dark);
    }

    .related-card p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.65;
      margin: 0 0 16px;
      flex: 1;
    }

    .card-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      text-decoration: none;
    }

    .card-link i {
      font-size: 12px;
      transition: transform .2s ease;
    }

    .card-link:hover i {
      transform: translateX(3px);
    }

    .back-to-list {
      margin-top: 38px;
      text-align: center;
    }

    .back-to-list a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-light);
      text-decoration: none;
      padding: 10px 20px;
      border: 1px solid var(--border);
      border-radius: var(--radius-btn);
      transition: color .2s ease, border-color .2s ease, background .2s ease;
    }

    .back-to-list a:hover {
      color: var(--primary);
      border-color: var(--primary);
      background: rgba(22, 99, 92, 0.04);
    }

    /* ---------- 页脚 ---------- */
    .site-footer {
      background: #EFECE4;
      border-top: 1px solid var(--border);
      padding: 36px 0 28px;
      margin-top: auto;
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 24px;
      flex-wrap: wrap;
      margin-bottom: 28px;
    }

    .footer-logo {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark);
    }

    .footer-desc {
      font-size: 14px;
      color: var(--text-light);
      margin-top: 8px;
      max-width: 380px;
      line-height: 1.65;
      margin-bottom: 0;
    }

    .footer-nav {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      padding-top: 4px;
    }

    .footer-nav a {
      color: var(--text-light);
      font-size: 14px;
      text-decoration: none;
      transition: color .2s ease;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(29, 42, 42, 0.08);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-light);
    }

    .footer-bottom p {
      margin: 0;
    }

    /* ---------- 响应式 ---------- */
    @media (max-width: 991.98px) {
      .app-sidebar {
        display: none;
      }

      .mobile-header {
        display: flex;
      }

      .main-wrapper {
        margin-left: 0;
      }

      .article-title {
        font-size: 30px;
      }

      .article-banner {
        padding: 44px 0 36px;
      }
    }

    @media (max-width: 767.98px) {
      .article-body {
        padding: 28px 24px;
      }

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

      .footer-top {
        flex-direction: column;
        gap: 16px;
      }

      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    @media (max-width: 575.98px) {
      .article-title {
        font-size: 24px;
      }

      .article-banner {
        padding: 32px 0 28px;
      }

      .meta-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .article-content-wrap {
        padding: 36px 0 28px;
      }

      .related-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }

      .btn-primary-custom,
      .btn-outline-custom {
        width: 100%;
        padding: 12px 20px;
      }

      .footer-bottom {
        text-align: left;
      }

      .mobile-brand {
        font-size: 14px;
        letter-spacing: 0;
      }
    }