/* roulang page: index */
:root {
  --bg-page: #0B0D12;
  --bg-panel: #14181F;
  --bg-deep: #10131A;
  --border-color: #282D35;
  --text-primary: #EAE8E2;
  --text-secondary: #9DA0A8;
  --text-muted: #6C7178;
  --primary: #E5A84B;
  --primary-hover: #F0B75E;
  --primary-dark: #C8892F;
  --secondary: #36D6C4;
  --success: #1FBF8F;
  --danger: #F26B4A;
  --link: #EAE8E2;
  --radius: 8px;
  --shadow-card: 0 4px 12px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.35);
  --sidebar-width: 112px;
  --content-pad-desktop: 40px;
  --content-pad-tablet: 28px;
  --content-pad-mobile: 16px;
  --section-space-desktop: 80px;
  --section-space-tablet: 56px;
  --section-space-mobile: 40px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 14px;
  overflow-x: hidden;
}
a { color: var(--link); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }
.row { max-width: 1280px; }
.columns { padding-left: 15px; padding-right: 15px; }

/* ===== 左侧 App Shell 导航 ===== */
.app-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1000;
  padding: 20px 0 16px;
  transition: transform 0.3s ease;
}
.sidebar-logo {
  margin-bottom: 36px;
  text-align: center;
}
.logo-text {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: 0.02em;
  padding: 8px 10px;
  border: 1px solid rgba(229, 168, 75, 0.35);
  border-radius: 6px;
  background: rgba(229, 168, 75, 0.06);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.logo-text:hover { border-color: var(--primary); color: var(--primary-hover); }
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  padding: 0 12px;
  flex: 1;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 6px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
  position: relative;
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-item i { font-size: 18px; }
.nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--primary-hover);
}
.nav-item.active {
  color: var(--primary);
  background: rgba(229, 168, 75, 0.10);
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}
.sidebar-footer {
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  width: 100%;
}

/* ===== 移动端顶部栏 ===== */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 999;
}
.menu-toggle {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  padding: 8px;
}
.mobile-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}
.mobile-action {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  padding: 8px;
}
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 998;
}
.drawer-overlay.active { display: block; }

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

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: var(--content-pad-desktop);
  padding-right: var(--content-pad-desktop);
}
.section {
  padding-top: var(--section-space-desktop);
  padding-bottom: var(--section-space-desktop);
}

/* ===== 区块标题 ===== */
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  position: relative;
  padding-left: 16px;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 22px;
  background: var(--primary);
  border-radius: 2px;
}
.section-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}
.section-link {
  font-size: 13px;
  color: var(--secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}
.section-link:hover { gap: 10px; color: var(--primary); }

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(11, 13, 18, 0.92) 0%, rgba(11, 13, 18, 0.65) 55%, rgba(11, 13, 18, 0.35) 100%),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 80px 0;
}
.hero-content {
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(54, 214, 196, 0.12);
  border: 1px solid rgba(54, 214, 196, 0.3);
  color: var(--secondary);
  font-size: 12px;
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}
.hero-title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.hero-title .highlight {
  color: var(--primary);
}
.hero-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #1A1408;
  font-weight: 600;
  font-size: 14px;
  border: none;
  border-radius: 6px;
  padding: 12px 26px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 8px rgba(229, 168, 75, 0.25);
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #1A1408;
  box-shadow: 0 4px 16px rgba(229, 168, 75, 0.35);
  transform: translateY(-1px);
}
.btn-primary:active {
  background: var(--primary-dark);
  transform: translateY(2px);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 12px 26px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}
.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 36px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.hero-scroll::after {
  content: "";
  width: 4px;
  height: 6px;
  background: var(--primary);
  border-radius: 2px;
  animation: scrollHint 1.6s infinite;
}
@keyframes scrollHint {
  0% { opacity: 0.4; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(8px); }
  100% { opacity: 0.4; transform: translateY(0); }
}

/* ===== 信任数字条 ===== */
.stats-bar {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 28px 0;
}
.stats-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.stat-item {
  flex: 1;
  min-width: 140px;
  text-align: center;
  border-right: 1px solid var(--border-color);
  padding: 0 20px;
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: "DIN Alternate", "Arial", sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}
.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ===== 功能分组 ===== */
.features-section {
  background: var(--bg-page);
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.feature-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
  box-shadow: var(--shadow-card);
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: rgba(229, 168, 75, 0.3);
}
.feature-card.feature-large {
  grid-row: span 2;
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.feature-icon.primary { color: var(--primary); }
.feature-icon.secondary { color: var(--secondary); }
.feature-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}
.feature-link {
  font-size: 13px;
  color: var(--secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}
.feature-link:hover { gap: 10px; color: var(--primary); }
.feature-media {
  margin-top: 16px;
  border-radius: 6px;
  overflow: hidden;
}
.feature-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 6px;
}

/* ===== 使用场景 ===== */
.scenarios-section {
  background: var(--bg-deep);
}
.scenario-list {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}
.scenario-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
  transition: background 0.2s ease;
  gap: 20px;
  flex-wrap: wrap;
}
.scenario-item:last-child { border-bottom: none; }
.scenario-item:hover {
  background: rgba(255, 255, 255, 0.03);
}
.scenario-left {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 220px;
}
.scenario-icon {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: rgba(229, 168, 75, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.scenario-name {
  font-size: 16px;
  font-weight: 600;
}
.scenario-desc {
  flex: 1;
  max-width: 520px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.scenario-link {
  font-size: 13px;
  color: var(--secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  transition: gap 0.2s ease;
}
.scenario-link:hover { gap: 8px; }

/* ===== 成功案例时间轴 ===== */
.timeline-section {
  background: var(--bg-page);
}
.timeline {
  position: relative;
  padding-left: 24px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}
.timeline-item {
  position: relative;
  padding: 24px 0 24px 24px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 32px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--bg-page);
  box-shadow: 0 0 0 2px rgba(229, 168, 75, 0.3);
}
.timeline-year {
  font-family: "DIN Alternate", "Arial", sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  min-width: 90px;
  text-align: right;
  line-height: 1.3;
}
.timeline-content {
  flex: 1;
  max-width: 640px;
}
.timeline-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}
.timeline-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.timeline-img {
  margin-top: 12px;
  max-width: 360px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.timeline-img img { width: 100%; object-fit: cover; }

/* ===== 价格/权益 ===== */
.pricing-section {
  background: var(--bg-deep);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.pricing-item {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.pricing-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.pricing-item.recommended {
  border-left: 3px solid var(--primary);
}
.pricing-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 10px;
}
.pricing-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--border-color);
  margin-bottom: 12px;
}
.pricing-feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.pricing-feature-list li {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.pricing-feature-list li i {
  color: var(--secondary);
  font-size: 11px;
}
.pricing-entry {
  margin-top: 16px;
  font-size: 13px;
  color: var(--secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}
.pricing-entry:hover { gap: 8px; color: var(--primary); }

/* ===== 最新资讯 ===== */
.news-section {
  background: var(--bg-page);
}
.news-list {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}
.news-item {
  display: flex;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  gap: 20px;
  transition: background 0.2s ease;
  flex-wrap: nowrap;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover {
  background: rgba(255, 255, 255, 0.03);
}
.news-cat {
  font-size: 12px;
  color: var(--secondary);
  background: rgba(54, 214, 196, 0.08);
  padding: 3px 12px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}
.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 0.2s ease;
}
.news-item:hover .news-title { color: var(--primary); }
.news-summary {
  font-size: 13px;
  color: var(--text-muted);
  flex: 2;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-date {
  font-size: 12px;
  color: var(--text-muted);
  font-family: "DIN Alternate", "Arial", sans-serif;
  white-space: nowrap;
  flex-shrink: 0;
}
.news-more {
  text-align: center;
  margin-top: 24px;
}
.empty-tip {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-panel);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-deep);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item.active {
  border-color: rgba(229, 168, 75, 0.3);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  gap: 16px;
  user-select: none;
}
.faq-question .faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(90deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 20px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 20px 18px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #1a1f28 0%, #2b2620 50%, #1a1f28 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 60px 0;
}
.cta-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
}
.cta-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.6;
}

/* ===== 页脚 ===== */
.app-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand .logo-text {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 15px;
}
.footer-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 280px;
}
.footer-heading {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.footer-contact i {
  width: 20px;
  color: var(--primary);
}
.footer-contact .footer-email {
  color: var(--text-secondary);
  font-family: "DIN Alternate", "Arial", sans-serif;
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container {
    padding-left: var(--content-pad-tablet);
    padding-right: var(--content-pad-tablet);
  }
  .section {
    padding-top: var(--section-space-tablet);
    padding-bottom: var(--section-space-tablet);
  }
  .hero { min-height: 440px; }
  .hero-title { font-size: 32px; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--content-pad-tablet);
    padding-right: var(--content-pad-tablet);
  }
  .hero { min-height: 400px; padding: 60px 0; }
  .hero-title { font-size: 28px; }
  .hero-subtitle { font-size: 14px; }
  .features-grid { grid-template-columns: 1fr; }
  .scenario-item { flex-direction: column; align-items: flex-start; }
  .pricing-grid { grid-template-columns: 1fr; }
  .timeline-item { gap: 16px; }
  .timeline-year { min-width: 60px; font-size: 18px; }
  .news-item { flex-wrap: wrap; gap: 10px; }
  .news-summary { flex-basis: 100%; white-space: normal; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .app-sidebar {
    transform: translateX(-100%);
    width: 260px;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.4);
  }
  .app-sidebar.open { transform: translateX(0); }
  .mobile-topbar { display: flex; }
  .app-main { margin-left: 0; padding-top: 56px; }
  .sidebar-logo { margin-bottom: 24px; }
  .sidebar-nav { padding: 0 16px; }
  .nav-item { flex-direction: row; justify-content: flex-start; padding: 14px 16px; font-size: 14px; }
  .nav-item i { font-size: 17px; }
  .nav-item.active::before { left: 0; top: 50%; height: 60%; }
  .container { padding-left: var(--content-pad-mobile); padding-right: var(--content-pad-mobile); }
  .section { padding-top: var(--section-space-mobile); padding-bottom: var(--section-space-mobile); }
  .hero { min-height: 360px; padding: 40px 0; }
  .hero-title { font-size: 24px; }
  .hero-subtitle { font-size: 13px; }
  .hero-actions { flex-direction: column; align-items: flex-start; gap: 12px; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .stats-grid { gap: 12px; }
  .stat-item { min-width: 45%; border-right: none; padding: 10px; }
  .stat-number { font-size: 26px; }
  .pricing-item { padding: 18px; }
  .section-title { font-size: 22px; }
  .timeline { padding-left: 16px; }
  .timeline-item { padding-left: 16px; }
  .cta-content { flex-direction: column; align-items: flex-start; }
  .news-item { padding: 16px; }
  .news-cat { font-size: 11px; }
  .news-title { font-size: 14px; }
  .news-date { font-size: 11px; }
  .faq-question { font-size: 14px; padding: 16px; }
  .footer-grid { gap: 20px; }
  .app-footer { padding: 32px 0 16px; }
}

/* roulang page: article */
:root {
            --bg-page: #0B0D12;
            --bg-panel: #14181F;
            --bg-deep: #10131A;
            --border-color: #282D35;
            --text-primary: #EAE8E2;
            --text-secondary: #9DA0A8;
            --text-muted: #6C7178;
            --primary: #E5A84B;
            --primary-hover: #F0B75E;
            --primary-dark: #C8892F;
            --secondary: #36D6C4;
            --success: #1FBF8F;
            --danger: #F26B4A;
            --link: #EAE8E2;
            --radius: 8px;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.35);
            --font-cn: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
            --font-num: "DIN Alternate", "Arial", sans-serif;
        }

        * {
            box-sizing: border-box;
        }
        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            background-color: var(--bg-page);
            color: var(--text-primary);
            font-family: var(--font-cn);
            font-size: 14px;
            line-height: 24px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--link);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-cn);
            color: var(--text-primary);
        }
        p {
            margin: 0 0 12px;
        }
        ul,
        ol {
            margin: 0 0 12px;
            padding-left: 20px;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 40px;
            padding-right: 40px;
            width: 100%;
        }

        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 112px;
            background: var(--bg-panel);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            align-items: center;
            z-index: 1000;
            padding: 24px 0 20px;
        }
        .sidebar-logo {
            margin-bottom: 32px;
            text-align: center;
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            color: var(--text-primary);
            text-decoration: none;
        }
        .logo-text:hover {
            color: var(--primary-hover);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
        }
        .logo-name {
            font-size: 13px;
            font-weight: 600;
            line-height: 18px;
            letter-spacing: 0.02em;
            text-align: center;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
            width: 100%;
            padding: 0 10px;
            flex: 1;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 14px 6px;
            border-radius: var(--radius);
            color: var(--text-secondary);
            font-size: 12px;
            text-decoration: none;
            transition: all .25s ease;
            position: relative;
        }
        .nav-item i {
            font-size: 18px;
            margin-bottom: 6px;
        }
        .nav-item span {
            font-size: 12px;
            letter-spacing: 0.02em;
        }
        .nav-item:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--primary-hover);
        }
        .nav-item.active {
            color: var(--primary);
        }
        .nav-item.active::before {
            content: "";
            position: absolute;
            left: -10px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }
        .sidebar-bottom {
            text-align: center;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
            width: 100%;
            margin-top: auto;
        }
        .sidebar-bottom p {
            font-size: 10px;
            color: var(--text-muted);
            margin: 0;
            line-height: 16px;
        }
        .sidebar-overlay {
            display: none;
        }

        .app-main {
            margin-left: 112px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .mobile-header {
            display: none;
            height: 56px;
            background: var(--bg-panel);
            border-bottom: 1px solid var(--border-color);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .mobile-header .menu-toggle {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 18px;
            cursor: pointer;
            padding: 8px;
        }
        .mobile-logo {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-decoration: none;
        }
        .mobile-header .menu-close {
            display: none;
        }

        .article-hero {
            position: relative;
            padding: 52px 0 44px;
            background-size: cover;
            background-position: center;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(85deg, rgba(11, 13, 18, 0.94) 25%, rgba(11, 13, 18, 0.75) 80%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--primary-hover);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            max-width: 360px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-title {
            font-size: 36px;
            line-height: 52px;
            font-weight: 700;
            letter-spacing: 0.01em;
            margin: 0 0 18px;
            max-width: 780px;
            color: var(--text-primary);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            font-size: 13px;
            color: var(--secondary);
        }

        .article-body-section {
            padding: 56px 0 64px;
            background: var(--bg-page);
        }
        .article-container {
            max-width: 820px;
        }
        .article-content {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-content > p:first-of-type::first-letter {
            font-size: 3.4em;
            float: left;
            line-height: 0.85;
            padding: 4px 10px 0 0;
            color: var(--primary);
            font-weight: 700;
            font-family: var(--font-num);
        }
        .article-content p {
            margin: 0 0 20px;
            line-height: 1.9;
        }
        .article-content h2 {
            font-size: 24px;
            line-height: 36px;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            color: var(--text-primary);
        }
        .article-content h3 {
            font-size: 19px;
            line-height: 30px;
            font-weight: 600;
            margin: 32px 0 14px;
            padding-left: 12px;
            border-left: 3px solid var(--secondary);
            color: var(--text-primary);
        }
        .article-content h4 {
            font-size: 16px;
            line-height: 26px;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--text-primary);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px;
            padding-left: 22px;
        }
        .article-content li {
            margin-bottom: 10px;
        }
        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: var(--bg-deep);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 6px;
            color: var(--text-secondary);
            font-style: normal;
        }
        .article-content a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--primary-hover);
        }
        .article-content img {
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border-color);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content table th {
            background: var(--bg-panel);
            color: var(--text-primary);
            font-weight: 600;
        }
        .empty-state {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-muted);
        }
        .empty-state p {
            font-size: 18px;
            margin-bottom: 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            text-decoration: none;
            transition: all .25s ease;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #1A150A;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 16px rgba(229, 168, 75, 0.3);
            color: #1A150A;
        }
        .btn-primary:active {
            background: var(--primary-dark);
            transform: translateY(2px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .related-section {
            padding: 64px 0 32px;
            background: var(--bg-deep);
            border-top: 1px solid var(--border-color);
        }
        .section-title {
            font-size: 26px;
            line-height: 38px;
            font-weight: 700;
            margin: 0 0 32px;
            position: relative;
            padding-left: 16px;
            color: var(--text-primary);
        }
        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .related-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: var(--bg-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 20px 22px;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            text-decoration: none;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .related-card h3 {
            font-size: 16px;
            line-height: 24px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .related-date {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--font-num);
        }
        .related-card .fa-arrow-right {
            color: var(--secondary);
            font-size: 16px;
            flex-shrink: 0;
            transition: transform .25s ease;
        }
        .related-card:hover .fa-arrow-right {
            transform: translateX(4px);
        }
        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            color: var(--text-muted);
            font-size: 14px;
            padding: 40px 0;
            background: var(--bg-panel);
            border: 1px dashed var(--border-color);
            border-radius: var(--radius);
        }

        .back-link-section {
            padding: 24px 0 8px;
            background: var(--bg-deep);
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color .2s ease;
        }
        .back-link i {
            transition: transform .2s ease;
            color: var(--secondary);
        }
        .back-link:hover {
            color: var(--primary-hover);
        }
        .back-link:hover i {
            transform: translateX(-4px);
        }

        .cta-section {
            padding: 56px 0 64px;
            background: var(--bg-deep);
        }
        .cta-banner {
            background: linear-gradient(120deg, var(--bg-panel) 0%, rgba(229, 168, 75, 0.12) 100%);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-banner h2 {
            font-size: 26px;
            line-height: 36px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-primary);
        }
        .cta-banner p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }
        .cta-banner .btn {
            flex-shrink: 0;
        }

        .app-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo-text {
            flex-direction: row;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 22px;
            max-width: 300px;
            margin: 0;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 18px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--primary-hover);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-email {
            color: var(--text-secondary);
            word-break: break-all;
        }
        .footer-bottom {
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }

        @media (max-width: 1024px) {
            .app-sidebar {
                width: 96px;
            }
            .app-main {
                margin-left: 96px;
            }
            .container {
                padding-left: 28px;
                padding-right: 28px;
            }
            .cta-banner {
                padding: 40px 32px;
            }
        }

        @media (max-width: 768px) {
            .app-sidebar {
                width: 80px;
            }
            .app-main {
                margin-left: 80px;
            }
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .article-title {
                font-size: 28px;
                line-height: 42px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            .app-sidebar {
                transform: translateX(-100%);
                width: 260px;
                transition: transform .3s ease;
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
            }
            .app-sidebar.active {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.6);
                z-index: 999;
                opacity: 0;
                visibility: hidden;
                transition: opacity .3s ease;
            }
            .sidebar-overlay.active {
                opacity: 1;
                visibility: visible;
            }
            .app-sidebar .logo-text {
                flex-direction: row;
            }
            .app-sidebar .nav-item {
                flex-direction: row;
                justify-content: flex-start;
                gap: 12px;
                padding: 14px 18px;
            }
            .app-sidebar .nav-item i {
                margin-bottom: 0;
                font-size: 16px;
                width: 20px;
            }
            .app-sidebar .nav-item.active::before {
                left: 0;
                top: 0;
                bottom: 0;
                transform: none;
                height: auto;
                width: 3px;
                border-radius: 0 3px 3px 0;
            }
            .app-sidebar .sidebar-nav {
                padding: 0 8px;
            }
            .app-main {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .article-hero {
                padding: 36px 0 32px;
            }
            .article-title {
                font-size: 24px;
                line-height: 36px;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body-section {
                padding: 40px 0 48px;
            }
            .related-section {
                padding: 48px 0 24px;
            }
            .section-title {
                font-size: 22px;
                line-height: 32px;
            }
            .cta-banner h2 {
                font-size: 20px;
                line-height: 30px;
            }
            .cta-banner p {
                font-size: 13px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand .logo-text {
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .related-card {
                padding: 16px 18px;
            }
            .cta-banner {
                padding: 24px 18px;
                border-radius: 10px;
            }
            .cta-banner .btn {
                width: 100%;
                text-align: center;
            }
            .article-content {
                font-size: 14px;
            }
            .article-content h2 {
                font-size: 20px;
                line-height: 30px;
            }
            .article-content h3 {
                font-size: 17px;
                line-height: 26px;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
  --bg-page: #0B0D12;
  --bg-panel: #14181F;
  --bg-deep: #10131A;
  --border-color: #282D35;
  --text-primary: #EAE8E2;
  --text-secondary: #9DA0A8;
  --text-muted: #6C7178;
  --primary: #E5A84B;
  --primary-hover: #F0B75E;
  --primary-dark: #C8892F;
  --secondary: #36D6C4;
  --success: #1FBF8F;
  --danger: #F26B4A;
  --link: #EAE8E2;
  --radius: 8px;
  --shadow-card: 0 4px 12px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.35);
  --sidebar-width: 112px;
}

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote {
  margin: 0;
  padding: 0;
}

body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: inherit;
  color: var(--text-primary);
  line-height: 1.3;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-hover);
}
a:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

.row {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.columns {
  padding-left: 8px;
  padding-right: 8px;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  line-height: 1.2;
}
.btn-primary {
  background: var(--primary);
  color: var(--bg-page);
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: var(--bg-page);
  box-shadow: 0 4px 16px rgba(229,168,75,0.3);
  transform: translateY(-1px);
}
.btn-primary:active {
  background: var(--primary-dark);
  transform: translateY(2px);
}
.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-hover);
  background: rgba(229,168,75,0.08);
  transform: translateY(-1px);
}
.btn-outline:active {
  transform: translateY(1px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--secondary);
  font-size: 14px;
  transition: color 0.2s ease;
}
.text-link i {
  transition: transform 0.2s ease;
  font-size: 12px;
}
.text-link:hover {
  color: var(--primary-hover);
}
.text-link:hover i {
  transform: translateX(4px);
}

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 0 16px;
}
.mobile-header .menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-radius: 6px;
  transition: background 0.2s;
}
.mobile-header .menu-toggle:hover {
  background: rgba(255,255,255,0.06);
}
.mobile-header .hamburger {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
}
.mobile-logo {
  flex: 1;
  text-align: center;
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}
.mobile-contact {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}
.mobile-contact:hover {
  background: rgba(255,255,255,0.06);
  color: var(--primary-hover);
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 950;
  display: none;
}
.drawer-overlay.show {
  display: block;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  z-index: 980;
  transition: transform 0.3s ease;
}
.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.sidebar-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 12px 32px;
  text-decoration: none;
}
.sidebar-logo:hover {
  color: var(--text-primary);
}
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--bg-page);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  font-family: "DIN Alternate", "Arial", sans-serif;
}
.logo-text {
  font-weight: 700;
  font-size: 13px;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.3;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 8px;
  flex: 1;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 8px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  position: relative;
}
.nav-item i {
  font-size: 20px;
}
.nav-item:hover {
  background: rgba(255,255,255,0.06);
  color: var(--primary-hover);
}
.nav-item.active {
  color: var(--text-primary);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 3px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}

.sidebar-foot {
  padding: 16px 8px;
  text-align: center;
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.5;
}

.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  overflow: hidden;
}

.page-hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(11,13,18,0.92) 30%, rgba(11,13,18,0.6) 75%, rgba(11,13,18,0.4) 100%);
}
.hero-row {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 460px;
  padding-top: 40px;
  padding-bottom: 40px;
}
.hero-inner {
  max-width: 640px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--secondary);
  margin-bottom: 20px;
  font-family: "DIN Alternate", "Arial", sans-serif;
}
.hero-tag i {
  font-size: 14px;
}
.hero-inner h1 {
  font-size: 40px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.5;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-meta {
  display: flex;
  margin-top: 48px;
  border-top: 1px solid rgba(255,255,255,0.14);
  padding-top: 24px;
  gap: 0;
}
.hero-meta-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 16px;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.hero-meta-item:first-child {
  padding-left: 0;
}
.hero-meta-item:last-child {
  border-right: none;
  padding-right: 0;
}
.meta-num {
  font-size: 30px;
  font-weight: 700;
  font-family: "DIN Alternate", "Arial", sans-serif;
  color: var(--primary);
  line-height: 1.1;
}
.meta-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.section {
  padding: 80px 0;
  background: var(--bg-page);
}
.section-alt {
  background: var(--bg-deep);
}

.section-head {
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  position: relative;
  padding-left: 14px;
  margin-bottom: 8px;
}
.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 4px;
  background: var(--primary);
  border-radius: 2px;
}
.section-head p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.anchor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.anchor-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
  text-decoration: none;
  min-height: 200px;
}
.anchor-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(229,168,75,0.3);
  transform: translateY(-2px);
}
.anchor-card:hover .anchor-link i {
  transform: translateX(4px);
}
.anchor-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 18px;
  color: var(--primary);
}
.anchor-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
}
.anchor-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}
.anchor-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--secondary);
}
.anchor-link i {
  font-size: 12px;
  transition: transform 0.2s ease;
}

.scene-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: center;
}
.scene-list {
  display: flex;
  flex-direction: column;
}
.scene-item {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-color);
}
.scene-item:first-child {
  padding-top: 0;
}
.scene-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.scene-name {
  flex: 0 0 160px;
}
.scene-name h3 {
  font-size: 17px;
  font-weight: 600;
}
.scene-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 10px;
}
.scene-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.scene-image img {
  width: 100%;
  height: 100%;
  min-height: 380px;
  object-fit: cover;
}

.steps-list {
  display: flex;
  flex-direction: column;
  max-width: 800px;
}
.step-item {
  display: flex;
  gap: 28px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}
.step-item:last-child {
  border-bottom: none;
}
.step-num {
  flex: 0 0 56px;
  font-size: 28px;
  font-weight: 700;
  font-family: "DIN Alternate", "Arial", sans-serif;
  color: var(--primary);
  line-height: 1;
}
.step-content h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}
.step-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.benefit-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}
.benefit-item {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 24px 28px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  transition: background 0.2s ease;
}
.benefit-item:last-child {
  border-bottom: none;
}
.benefit-item.highlight {
  background: rgba(229,168,75,0.06);
  position: relative;
}
.benefit-item.highlight::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 3px;
  background: var(--primary);
  border-radius: 0 2px 2px 0;
}
.benefit-level {
  flex: 0 0 140px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}
.benefit-desc {
  flex: 1;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.benefit-link {
  flex: 0 0 auto;
}

.faq-list {
  max-width: 860px;
}
.faq-item {
  background: var(--bg-deep);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item.active {
  border-color: rgba(229,168,75,0.3);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  transition: color 0.2s ease;
}
.faq-question:hover {
  color: var(--primary-hover);
}
.faq-question i {
  font-size: 14px;
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.2s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.active .faq-answer {
  max-height: 240px;
}
.faq-answer p {
  padding: 0 24px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.75;
}

.cta-banner {
  background: linear-gradient(120deg, #1A1E26 0%, #232830 50%, #1A1E26 100%);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(229,168,75,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 80px 24px;
}
.cta-inner h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-inner p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.app-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-color);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo-text {
  display: inline-block;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.footer-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}
.footer-heading {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--primary-hover);
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-contact p {
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact i {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-email {
  color: var(--text-secondary);
  transition: color 0.2s;
}
.footer-email:hover {
  color: var(--primary-hover);
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 1024px) {
  :root {
    --sidebar-width: 88px;
  }
  .row {
    padding-left: 20px;
    padding-right: 20px;
  }
  .section {
    padding: 56px 0;
  }
  .scene-layout {
    grid-template-columns: 1fr 280px;
    gap: 32px;
  }
  .scene-image img {
    min-height: 300px;
  }
  .benefit-item {
    flex-wrap: wrap;
    gap: 20px;
  }
  .benefit-level {
    flex: 0 0 100%;
  }
  .benefit-link {
    flex: 0 0 auto;
    margin-left: 0;
  }
}

@media (max-width: 640px) {
  .mobile-header {
    display: flex;
    align-items: center;
  }
  .sidebar {
    transform: translateX(-100%);
    position: fixed;
    z-index: 1000;
    width: 260px;
    box-shadow: 4px 0 24px rgba(0,0,0,0.3);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-logo {
    flex-direction: row;
    gap: 8px;
    padding: 16px 20px;
    justify-content: flex-start;
  }
  .logo-text {
    font-size: 15px;
  }
  .sidebar-nav {
    padding: 0 12px;
    align-items: stretch;
  }
  .nav-item {
    flex-direction: row;
    justify-content: flex-start;
    gap: 12px;
    padding: 14px 16px;
    font-size: 14px;
  }
  .nav-item i {
    font-size: 18px;
  }
  .main-wrapper {
    margin-left: 0;
    padding-top: 56px;
  }
  .row {
    padding-left: 16px;
    padding-right: 16px;
  }
  .columns {
    padding-left: 4px;
    padding-right: 4px;
  }
  .page-hero {
    min-height: auto;
  }
  .hero-row {
    min-height: 400px;
    padding-top: 32px;
    padding-bottom: 32px;
  }
  .hero-inner h1 {
    font-size: 30px;
    margin-bottom: 12px;
  }
  .hero-subtitle {
    font-size: 14px;
    margin-bottom: 24px;
  }
  .hero-actions {
    gap: 12px;
  }
  .hero-meta {
    flex-wrap: wrap;
    gap: 16px;
  }
  .hero-meta-item {
    flex: 0 0 100%;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 8px 0;
  }
  .hero-meta-item:last-child {
    border-bottom: none;
  }
  .section {
    padding: 40px 0;
  }
  .section-head {
    margin-bottom: 28px;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .anchor-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .anchor-card {
    padding: 22px;
    min-height: auto;
  }
  .scene-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .scene-item {
    flex-direction: column;
    gap: 12px;
    padding: 20px 0;
  }
  .scene-name {
    flex: 0 0 auto;
  }
  .scene-image img {
    min-height: 220px;
  }
  .step-item {
    flex-direction: column;
    gap: 12px;
  }
  .benefit-item {
    padding: 20px;
    flex-direction: column;
  }
  .cta-inner {
    padding: 48px 16px;
  }
  .cta-inner h2 {
    font-size: 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 480px) {
  .hero-actions .btn {
    width: 100%;
  }
  .hero-actions {
    flex-direction: column;
  }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root {
  --bg-page: #0B0D12;
  --bg-panel: #14181F;
  --bg-deep: #10131A;
  --border-color: #282D35;
  --text-primary: #EAE8E2;
  --text-secondary: #9DA0A8;
  --text-muted: #6C7178;
  --primary: #E5A84B;
  --primary-hover: #F0B75E;
  --primary-dark: #C8892F;
  --secondary: #36D6C4;
  --success: #1FBF8F;
  --danger: #F26B4A;
  --link: #EAE8E2;
  --radius: 8px;
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.35);
  --sidebar-width: 112px;
  --content-max: 1200px;
}

/* ========== Reset 基础 ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
}

i { vertical-align: middle; }

/* ========== 布局骨架 ========== */
.app-sidebar {
  width: var(--sidebar-width);
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 200;
  padding: 24px 0 16px;
}

.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: calc(100% - var(--sidebar-width));
}

.main-content { flex: 1; }

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 40px;
}

/* ========== 左侧导航 ========== */
.sidebar-logo {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
  padding: 8px 4px 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
  line-height: 1.5;
  transition: color 0.2s ease;
}

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

.sidebar-nav {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 16px 6px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  text-align: center;
  transition: all 0.2s ease;
  position: relative;
}

.nav-item i {
  font-size: 20px;
  line-height: 1;
}

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

.nav-item.active {
  color: var(--primary);
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22%;
  height: 56%;
  width: 3px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}

.sidebar-bottom {
  margin-top: auto;
  text-align: center;
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.8;
  padding: 0 8px;
}

/* ========== 移动端顶部栏 ========== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 180;
  height: 56px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.mobile-header .menu-toggle {
  font-size: 18px;
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}

.mobile-header .menu-toggle:hover { background: rgba(255, 255, 255, 0.06); }

.mobile-header .mobile-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.mobile-spacer { width: 40px; }

/* 遮罩 */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 190;
}

/* ========== 按钮 ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #14181F;
  font-weight: 600;
  font-size: 14px;
  padding: 12px 28px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 18px rgba(229, 168, 75, 0.3);
  transform: translateY(-1px);
  color: #14181F;
}

.btn-primary:active {
  background: var(--primary-dark);
  transform: translateY(2px);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
  padding: 12px 28px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  border-color: rgba(229, 168, 75, 0.55);
  color: var(--primary-hover);
  background: rgba(229, 168, 75, 0.06);
}

.btn-secondary:active { transform: translateY(1px); }

.btn-secondary:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

/* ========== Hero 分类页 ========== */
.category-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 100px 0 90px;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 13, 18, 0.92) 30%, rgba(11, 13, 18, 0.65) 70%, rgba(11, 13, 18, 0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(54, 214, 196, 0.12);
  border: 1px solid rgba(54, 214, 196, 0.35);
  color: var(--secondary);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.hero-content h1 {
  font-size: 40px;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

.hero-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 28px;
}

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

/* ========== 通用板块 ========== */
.page-section {
  padding: 80px 0;
}

.page-section + .page-section {
  border-top: 1px solid var(--border-color);
}

.section-heading {
  margin-bottom: 44px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.section-heading h2 {
  font-size: 26px;
  line-height: 1.4;
  margin-bottom: 12px;
  position: relative;
  padding-left: 16px;
}

.section-heading h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 4px;
  height: 26px;
  background: var(--primary);
  border-radius: 2px;
}

.section-heading p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 720px;
}

/* ========== 资讯说明区 ========== */
.section-intro {
  background: var(--bg-deep);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.intro-text .section-tag { margin-bottom: 14px; }

.intro-text h2 {
  font-size: 26px;
  line-height: 1.4;
  margin-bottom: 16px;
  padding-left: 16px;
  position: relative;
}

.intro-text h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 4px;
  height: 26px;
  background: var(--primary);
  border-radius: 2px;
}

.intro-text p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 22px;
}

.intro-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 7px 0;
}

.intro-list li i {
  color: var(--secondary);
  font-size: 14px;
}

.intro-image img {
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  object-fit: cover;
  width: 100%;
}

.intro-stats {
  margin-top: 44px;
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
}

.intro-stat {
  text-align: center;
  padding: 20px 0;
}

.intro-stat + .intro-stat {
  border-left: 1px solid var(--border-color);
}

.intro-stat strong {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  font-family: "DIN Alternate", "Arial", sans-serif;
  margin-bottom: 4px;
}

.intro-stat span {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== 内容覆盖方向 ========== */
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.coverage-item {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all 0.25s ease;
  cursor: default;
}

.coverage-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(229, 168, 75, 0.4);
  transform: translateY(-2px);
}

.coverage-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 18px;
}

.coverage-item:nth-child(even) .coverage-icon {
  color: var(--secondary);
}

.coverage-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

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

/* ========== 时间线 ========== */
.section-timeline {
  background: var(--bg-deep);
}

.timeline-list {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 96px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 80px 32px 1fr;
  gap: 0;
  padding-bottom: 44px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-date {
  text-align: right;
  font-family: "DIN Alternate", "Arial", sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.9;
  padding-right: 16px;
}

.timeline-marker {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--bg-deep);
  position: relative;
  z-index: 1;
  justify-self: center;
  margin-top: 6px;
  box-shadow: 0 0 0 3px rgba(229, 168, 75, 0.2);
}

.timeline-content {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 22px 26px;
  transition: all 0.25s ease;
}

.timeline-content:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(229, 168, 75, 0.35);
}

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

.timeline-content p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ========== FAQ ========== */
.container-narrow {
  max-width: 860px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--bg-deep);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item.active {
  background: var(--bg-panel);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: all 0.2s ease;
  gap: 16px;
}

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

.faq-question i {
  font-size: 13px;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.faq-item.active .faq-answer { display: block; }

/* ========== CTA ========== */
.cta-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius);
  padding: 60px 56px;
  overflow: hidden;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 13, 18, 0.94) 40%, rgba(11, 13, 18, 0.7) 100%);
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.cta-content h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* ========== 页脚 ========== */
.app-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-color);
  padding: 52px 0 28px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 48px;
  padding-bottom: 36px;
}

.footer-brand .logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 320px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.footer-contact p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact i {
  color: var(--text-muted);
  font-size: 13px;
}

.footer-email { color: var(--text-primary); }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== 响应式 ========== */
@media screen and (max-width: 1024px) {
  .coverage-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .intro-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media screen and (max-width: 768px) {
  .container {
    padding: 0 24px;
  }

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

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

  .hero-content p {
    font-size: 14px;
  }

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

  .intro-image img {
    max-height: 280px;
    object-fit: cover;
  }

  .timeline-list::before {
    left: 60px;
  }

  .timeline-item {
    grid-template-columns: 56px 24px 1fr;
  }

  .timeline-date {
    font-size: 14px;
    padding-right: 10px;
  }

  .cta-banner {
    padding: 40px 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media screen and (max-width: 640px) {
  body {
    display: block;
  }

  .app-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    width: 260px;
    padding: 16px 0;
  }

  .app-sidebar.open {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
    width: 100%;
  }

  .mobile-header {
    display: flex;
  }

  .sidebar-nav {
    align-items: flex-start;
    padding: 0 16px;
  }

  .nav-item {
    flex-direction: row;
    justify-content: flex-start;
    gap: 12px;
    width: 100%;
    padding: 14px 12px;
    font-size: 14px;
  }

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

  .nav-item.active::before {
    left: 0;
    top: 20%;
    height: 60%;
  }

  .sidebar-logo {
    writing-mode: horizontal-tb;
    border-bottom: none;
    font-size: 17px;
    margin-bottom: 8px;
    padding: 8px 16px;
    display: block;
    width: 100%;
  }

  .sidebar-bottom {
    padding: 0 16px;
    text-align: left;
  }

  .container {
    padding: 0 16px;
  }

  .page-section {
    padding: 40px 0;
  }

  .category-hero {
    padding: 60px 0 56px;
  }

  .hero-content h1 {
    font-size: 26px;
  }

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
    width: 100%;
  }

  .section-heading h2 {
    font-size: 21px;
  }

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

  .intro-stats .intro-stat {
    padding: 12px 4px;
  }

  .intro-stat strong {
    font-size: 18px;
  }

  .timeline-list::before {
    left: 12px;
  }

  .timeline-item {
    grid-template-columns: 20px 1fr;
    gap: 0;
    padding-left: 0;
  }

  .timeline-date {
    grid-column: 2;
    text-align: left;
    font-size: 13px;
    color: var(--primary);
    padding-right: 0;
    margin-bottom: 6px;
    font-weight: 600;
  }

  .timeline-marker {
    grid-column: 1;
    grid-row: 1 / span 2;
    justify-self: center;
    margin-top: 4px;
  }

  .timeline-content {
    grid-column: 2;
  }

  .cta-banner {
    padding: 32px 20px;
  }

  .cta-content h2 {
    font-size: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}