/* roulang page: index */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.22);
  --accent: #06b6d4;
  --accent-soft: rgba(6, 182, 212, 0.12);
  --text-main: #0f172a;
  --text-sub: #475569;
  --text-light: #94a3b8;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-alt: #f1f5f9;
  --bg-dark: #090d16;
  --bg-dark-card: #131b2e;
  --border-light: #e2e8f0;
  --border-dark: #1e293b;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 14px 0 rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.12);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
img { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 导航系统：下载转化版式 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(9, 13, 22, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: background 0.3s;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.5px;
}
.brand-badge {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: 0.5px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-link {
  color: #cbd5e1;
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-link:hover, .nav-link.active {
  color: #38bdf8;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.btn-nav-action {
  background: linear-gradient(135deg, #4f46e5, #06b6d4);
  color: #ffffff;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px var(--primary-glow);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-nav-action:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

/* 布局版块通则 */
.section {
  padding: 88px 0;
  position: relative;
}
.section-dark {
  background-color: var(--bg-dark);
  color: #f8fafc;
}
.section-alt {
  background-color: var(--bg-alt);
}
.section-header {
  margin-bottom: 48px;
}
.section-header.text-center {
  text-align: center;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}
.section-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-dark .section-tag {
  background: rgba(6, 182, 212, 0.15);
  color: #38bdf8;
}
.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-lead {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 1.7;
}
.section-dark .section-lead {
  color: #94a3b8;
}

/* 1. Hero: API / 开发者舞台 */
.hero-section {
  padding: 80px 0 100px;
  background: radial-gradient(circle at 85% 20%, rgba(79, 70, 229, 0.28) 0%, rgba(9, 13, 22, 1) 75%), var(--bg-dark);
  color: #ffffff;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dark);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero-title {
  font-size: 2.75rem;
  font-weight: 850;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero-title span {
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 1.08rem;
  color: #cbd5e1;
  line-height: 1.75;
  margin-bottom: 36px;
}
.hero-cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  background: #4f46e5;
  color: #ffffff;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.98rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 20px var(--primary-glow);
}
.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #f1f5f9;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.98rem;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
}

/* 终端代码示意块 */
.code-window {
  background: #0d1322;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  overflow: hidden;
}
.window-top {
  background: #172033;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #1e293b;
}
.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }
.window-title {
  margin-left: 10px;
  font-size: 0.78rem;
  color: #94a3b8;
  font-family: var(--font-mono);
}
.code-content {
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.7;
  color: #e2e8f0;
}
.code-keyword { color: #f472b6; }
.code-string { color: #34d399; }
.code-prop { color: #38bdf8; }
.code-num { color: #fbbf24; }

/* 2. 搜索与控制台入口条 */
.search-bar-section {
  padding: 24px 0;
  background: #0f172a;
  border-bottom: 1px solid #1e293b;
}
.search-box-wrap {
  display: flex;
  gap: 12px;
  background: #1e293b;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid #334155;
  align-items: center;
}
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  padding: 8px 12px;
}
.search-input::placeholder { color: #64748b; }
.search-btn {
  background: var(--accent);
  color: #042f2e;
  font-weight: 700;
  border: none;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* 3. 分类矩阵 */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.cat-card {
  background: var(--bg-card);
  padding: 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}
.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.cat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 18px;
}
.cat-card h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
  color: var(--text-main);
}
.cat-card p {
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.6;
  flex: 1;
}
.cat-link {
  margin-top: 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
}

/* 4. 指标看板 */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.metric-box {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  padding: 32px 24px;
  border-radius: var(--radius-md);
  text-align: center;
}
.metric-val {
  font-size: 2.8rem;
  font-weight: 850;
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}
.metric-label {
  font-size: 1rem;
  font-weight: 600;
  color: #f8fafc;
  margin-bottom: 6px;
}
.metric-desc {
  font-size: 0.84rem;
  color: #94a3b8;
}

/* 5. 结果对比 */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: var(--bg-card);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.compare-table th, .compare-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.94rem;
}
.compare-table th {
  background: #f8fafc;
  color: var(--text-main);
  font-weight: 700;
}
.compare-table tr:last-child td { border-bottom: none; }
.badge-pro {
  background: #dcfce7;
  color: #15803d;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
}
.badge-old {
  background: #fee2e2;
  color: #b91c1c;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
}

/* 6. 精选清单 (Bento风格) */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.bento-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.bento-thumb {
  height: 180px;
  width: 100%;
  object-fit: cover;
}
.bento-body {
  padding: 24px;
  flex: 1;
}
.bento-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}
.bento-body p {
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* 7. 里程碑与技术演进 */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: #334155;
}
.timeline-item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 36px;
}
.timeline-dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #06b6d4;
  border: 3px solid #090d16;
}
.timeline-content {
  background: var(--bg-dark-card);
  padding: 22px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-dark);
}
.timeline-date {
  font-size: 0.82rem;
  color: #38bdf8;
  font-weight: 700;
  margin-bottom: 4px;
}
.timeline-content h3 {
  font-size: 1.12rem;
  color: #ffffff;
  margin-bottom: 8px;
}
.timeline-content p {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.6;
}

/* 8. 最新更新 (CMS 列表区) */
.news-layout {
  display: grid;
  grid-template-columns: 1.8fr 1.2fr;
  gap: 36px;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.news-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.news-main h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.news-desc {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.6;
}
.news-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  white-space: nowrap;
}
.news-side-banner {
  background: linear-gradient(180deg, #1e1b4b 0%, #0f172a 100%);
  border-radius: var(--radius-md);
  padding: 32px;
  color: #ffffff;
  border: 1px solid #312e81;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.news-side-banner h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: #e0e7ff;
}
.news-side-banner p {
  font-size: 0.92rem;
  color: #c7d2fe;
  line-height: 1.7;
}

/* 9. 热门排行 */
.ranking-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.rank-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}
.rank-num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 2.2rem;
  font-weight: 900;
  color: #e2e8f0;
  line-height: 1;
}
.rank-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--text-main);
  padding-right: 32px;
}
.rank-card p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.6;
}

/* 10. 资源中心 */
.res-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.res-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.res-card h3 {
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 10px;
}
.res-card p {
  font-size: 0.86rem;
  color: #94a3b8;
  margin-bottom: 18px;
  line-height: 1.6;
}
.res-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #38bdf8;
}

/* 11. 资讯纵深专题 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
}
.article-item img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}
.article-body {
  padding: 22px;
}
.article-body h3 {
  font-size: 1.12rem;
  margin-bottom: 10px;
  color: var(--text-main);
}
.article-body p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.6;
}

/* 12. 平台安全保障 */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.security-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 30px;
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-sm);
}
.security-card h3 {
  font-size: 1.18rem;
  margin-bottom: 12px;
  color: var(--text-main);
}
.security-card p {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* 13. 快速解答与常见问题 */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.faq-item {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}
.faq-item h3 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq-item h3::before {
  content: "Q";
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
}
.faq-item p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* 14. 收藏入口与转化表单收口 */
.cta-box {
  background: radial-gradient(circle at center, #1e1b4b 0%, #090d16 100%);
  border: 1px solid #312e81;
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  color: #ffffff;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.cta-info h2 {
  font-size: 2rem;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-info p {
  font-size: 0.98rem;
  color: #cbd5e1;
  line-height: 1.7;
}
.lead-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.form-input {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid #334155;
  background: rgba(15, 23, 42, 0.7);
  color: #ffffff;
  font-size: 0.92rem;
  outline: none;
}
.form-input:focus { border-color: #38bdf8; }
.btn-submit {
  background: linear-gradient(135deg, #4f46e5, #06b6d4);
  color: #ffffff;
  font-weight: 700;
  border: none;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.98rem;
}
.form-tips {
  font-size: 0.76rem;
  color: #94a3b8;
  text-align: center;
}

/* 页脚 */
.site-footer {
  background: #060911;
  border-top: 1px solid #1e293b;
  padding: 64px 0 32px;
  color: #94a3b8;
  font-size: 0.88rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand h4 {
  font-size: 1.2rem;
  color: #ffffff;
  margin-bottom: 14px;
}
.footer-brand p {
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h5 {
  font-size: 0.95rem;
  color: #f8fafc;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a:hover {
  color: #38bdf8;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid, .ranking-grid, .article-grid, .res-grid, .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .cta-box { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .hero-title { font-size: 2.1rem; }
  .section-title { font-size: 1.75rem; }
  .cat-grid, .ranking-grid, .article-grid, .res-grid, .bento-grid, .faq-grid, .security-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
}

/* roulang page: category1 */
:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --primary-glow: rgba(79, 70, 229, 0.22);
      --accent: #06b6d4;
      --accent-soft: rgba(6, 182, 212, 0.12);
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-light: #94a3b8;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --bg-dark: #090d16;
      --bg-dark-card: #131b2e;
      --border-light: #e2e8f0;
      --border-dark: #1e293b;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 14px 0 rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.12);
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: inherit; }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航系统：下载转化版式 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(9, 13, 22, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: -0.5px;
    }
    .brand-badge {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      color: #cbd5e1;
      font-size: 0.95rem;
      font-weight: 500;
    }
    .nav-link:hover, .nav-link.active {
      color: #38bdf8;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn-nav-action {
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      padding: 10px 22px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 14px var(--primary-glow);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-nav-action:hover {
      filter: brightness(1.1);
      transform: translateY(-1px);
    }

    /* 布局与版块基类 */
    .section {
      padding: 88px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #f8fafc;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      background: var(--accent-soft);
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-dark .section-tag {
      background: rgba(6, 182, 212, 0.15);
      color: #38bdf8;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-lead {
      font-size: 1.05rem;
      color: var(--text-sub);
      line-height: 1.7;
    }
    .section-dark .section-lead {
      color: #94a3b8;
    }

    /* Hero：众筹预热，目标进度环 + 档位预览 + 支持按钮 */
    .hero-crowd {
      padding: 90px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(79, 70, 229, 0.3) 0%, rgba(9, 13, 22, 1) 75%), var(--bg-dark);
      color: #ffffff;
      border-bottom: 1px solid var(--border-dark);
      position: relative;
    }
    .hero-crowd-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 56px;
      align-items: center;
    }
    .hero-crowd-title {
      font-size: 2.85rem;
      font-weight: 850;
      line-height: 1.2;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-crowd-title span {
      background: linear-gradient(135deg, #38bdf8, #818cf8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-crowd-desc {
      font-size: 1.08rem;
      color: #cbd5e1;
      line-height: 1.75;
      margin-bottom: 36px;
      max-width: 620px;
    }

    /* 档位卡片组合 */
    .tier-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-bottom: 36px;
    }
    .tier-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 18px 16px;
      transition: all 0.25s ease;
    }
    .tier-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: #38bdf8;
      transform: translateY(-2px);
    }
    .tier-badge {
      display: inline-block;
      font-size: 0.72rem;
      color: #38bdf8;
      background: rgba(56, 189, 248, 0.12);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .tier-name {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 4px;
    }
    .tier-param {
      font-size: 0.84rem;
      color: #94a3b8;
    }

    /* 进度环与右侧支持面板 */
    .pledge-panel {
      background: var(--bg-dark-card);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
      text-align: center;
      position: relative;
    }
    .ring-box {
      width: 170px;
      height: 170px;
      margin: 0 auto 24px;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .ring-svg {
      transform: rotate(-90deg);
      width: 100%;
      height: 100%;
    }
    .ring-bg {
      stroke: rgba(255, 255, 255, 0.1);
    }
    .ring-val {
      stroke: #06b6d4;
      stroke-dasharray: 440;
      stroke-dashoffset: 57; /* 87% progress */
      stroke-linecap: round;
      transition: stroke-dashoffset 1s ease-in-out;
    }
    .ring-inner-text {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      font-size: 2.1rem;
      font-weight: 800;
      color: #ffffff;
    }
    .ring-inner-text small {
      font-size: 1rem;
      color: #38bdf8;
      display: block;
      margin-top: -6px;
      font-weight: 600;
    }
    .pledge-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 16px 0;
      margin-bottom: 24px;
      text-align: left;
    }
    .pledge-stat-label {
      font-size: 0.8rem;
      color: #94a3b8;
    }
    .pledge-stat-num {
      font-size: 1.18rem;
      font-weight: 700;
      color: #ffffff;
    }
    .btn-pledge {
      display: block;
      width: 100%;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      padding: 15px 24px;
      border-radius: var(--radius-md);
      font-size: 1.05rem;
      font-weight: 700;
      text-align: center;
      box-shadow: 0 4px 18px var(--primary-glow);
    }
    .btn-pledge:hover {
      filter: brightness(1.12);
      transform: translateY(-2px);
    }

    /* 板块 1：指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: linear-gradient(180deg, var(--primary), var(--accent));
    }
    .metric-value {
      font-size: 2.4rem;
      font-weight: 850;
      color: var(--text-main);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-unit {
      font-size: 1.1rem;
      color: var(--accent);
      font-weight: 600;
      margin-left: 2px;
    }
    .metric-title {
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-desc {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.55;
    }

    /* 板块 2：服务矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .matrix-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: var(--accent-soft);
      color: var(--accent);
      display: flex;
      align-items: center;justify-content: center;
      margin-bottom: 20px;
    }
    .matrix-title {
      font-size: 1.25rem;
      font-weight: 750;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .matrix-desc {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .matrix-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .matrix-pill {
      font-size: 0.78rem;
      font-weight: 600;
      background: var(--bg-alt);
      color: var(--text-sub);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }

    /* 板块 3：结果对比 (深色带) */
    .compare-table-wrap {
      overflow-x: auto;
      background: var(--bg-dark-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
      box-shadow: var(--shadow-lg);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .compare-table th {
      background: rgba(255, 255, 255, 0.03);
      color: #94a3b8;
      font-weight: 600;
      font-size: 0.88rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .compare-table td {
      color: #cbd5e1;
    }
    .compare-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }
    .compare-tag-pass {
      color: #38bdf8;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .compare-tag-fail {
      color: #64748b;
    }

    /* 板块 4：工程里程碑 */
    .timeline-wrap {
      position: relative;
      max-width: 860px;
      margin: 0 auto;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 24px;
      width: 2px;
      background: var(--border-light);
    }
    .timeline-item {
      position: relative;
      padding-left: 64px;
      margin-bottom: 40px;
    }
    .timeline-item:last-child {
      margin-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: 17px;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--primary);
      border: 3px solid #fff;
      box-shadow: 0 0 0 3px var(--primary-glow);
    }
    .timeline-time {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .timeline-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .timeline-content {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 板块 5：资讯列表 (CMS 动态调用) */
    .post-list-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .post-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .post-card:hover {
      border-color: #cbd5e1;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .post-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }
    .post-cat {
      font-size: 0.76rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--accent-soft);
      padding: 3px 8px;
      border-radius: 4px;
    }
    .post-time {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .post-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 10px;
    }
    .post-title a:hover {
      color: var(--primary);
    }
    .post-excerpt {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .post-link-more {
      font-size: 0.86rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .post-link-more:hover {
      color: var(--primary-hover);
    }
    .empty-cms {
      grid-column: 1 / -1;
      text-align: center;
      padding: 40px;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      color: var(--text-sub);
      border: 1px dashed var(--border-light);
    }

    /* 板块 6：平台保障体系 */
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .assurance-item {
      padding: 28px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
    }
    .assurance-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }
    .assurance-text {
      font-size: 0.88rem;
      color: #94a3b8;
      line-height: 1.65;
    }

    /* 板块 7：常见问题 FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .faq-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .faq-a {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 板块 8：转化表单与对接区 */
    .cta-card-box {
      background: linear-gradient(135deg, #131b2e 0%, #090d16 100%);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-info h3 {
      font-size: 2rem;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-info p {
      font-size: 1rem;
      color: #cbd5e1;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .cta-input-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .cta-input-group.full {
      grid-column: 1 / -1;
    }
    .cta-label {
      font-size: 0.82rem;
      font-weight: 600;
      color: #94a3b8;
    }
    .cta-input {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #ffffff;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      outline: none;
    }
    .cta-input:focus {
      border-color: #38bdf8;
      background: rgba(255, 255, 255, 0.08);
    }
    .btn-submit-action {
      grid-column: 1 / -1;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      border: none;
      padding: 14px;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 14px var(--primary-glow);
      transition: all 0.2s ease;
    }
    .btn-submit-action:hover {
      filter: brightness(1.1);
    }

    /* 页脚 */
    .site-footer {
      background: #060911;
      color: #94a3b8;
      padding: 72px 0 32px;
      border-top: 1px solid #1e293b;
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.25rem;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.7;
      max-width: 340px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 0.96rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-crowd-grid { grid-template-columns: 1fr; gap: 40px; }
      .pledge-panel { max-width: 520px; margin: 0 auto; width: 100%; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .matrix-grid { grid-template-columns: repeat(2, 1fr); }
      .cta-card-box { grid-template-columns: 1fr; gap: 32px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    }
    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .hero-crowd-title { font-size: 2.2rem; }
      .tier-list { grid-template-columns: 1fr; }
      .matrix-grid { grid-template-columns: 1fr; }
      .assurance-grid { grid-template-columns: 1fr; }
      .post-list-grid { grid-template-columns: 1fr; }
      .faq-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; }
    }

/* roulang page: article */
:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --primary-glow: rgba(79, 70, 229, 0.22);
      --accent: #06b6d4;
      --accent-soft: rgba(6, 182, 212, 0.12);
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-light: #94a3b8;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --bg-dark: #090d16;
      --bg-dark-card: #131b2e;
      --border-light: #e2e8f0;
      --border-dark: #1e293b;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 14px 0 rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.12);
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    html { scroll-behavior: smooth; font-size: 16px; }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.2s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input { font-family: inherit; }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(9, 13, 22, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      transition: background 0.3s;
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: -0.5px;
    }
    .brand-badge {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      color: #cbd5e1;
      font-size: 0.95rem;
      font-weight: 500;
    }
    .nav-link:hover, .nav-link.active {
      color: #38bdf8;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn-nav-action {
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      padding: 10px 22px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 14px var(--primary-glow);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-nav-action:hover {
      filter: brightness(1.1);
      transform: translateY(-1px);
    }
    .section {
      padding: 80px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #f8fafc;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      background: var(--accent-soft);
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-dark .section-tag {
      background: rgba(6, 182, 212, 0.15);
      color: #38bdf8;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.28;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-lead {
      font-size: 1.05rem;
      color: var(--text-sub);
      line-height: 1.7;
    }
    .section-dark .section-lead {
      color: #94a3b8;
    }

    /* 1. Article Hero / Meta Header */
    .article-hero {
      position: relative;
      padding: 64px 0 54px;
      background: linear-gradient(180deg, rgba(9, 13, 22, 0.92) 0%, rgba(9, 13, 22, 0.98) 100%), url('/assets/images/79d32397425aa658.webp') center/cover no-repeat;
      color: #ffffff;
      border-bottom: 1px solid var(--border-dark);
    }
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.88rem;
      color: #94a3b8;
      margin-bottom: 24px;
    }
    .breadcrumb-nav a:hover {
      color: #38bdf8;
    }
    .breadcrumb-sep {
      opacity: 0.4;
    }
    .article-hero-title {
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
      color: #ffffff;
    }
    .article-meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 20px;
      color: #cbd5e1;
      font-size: 0.9rem;
      padding-top: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .meta-chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.06);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }

    /* 2. Highlights / Key takeaway strip */
    .highlight-strip {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
      padding: 24px 0;
      box-shadow: var(--shadow-sm);
    }
    .highlight-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .highlight-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }
    .highlight-icon {
      width: 42px;
      height: 42px;
      border-radius: var(--radius-md);
      background: var(--accent-soft);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-weight: 700;
    }
    .highlight-label {
      font-size: 0.82rem;
      color: var(--text-light);
      text-transform: uppercase;
      margin-bottom: 2px;
      font-weight: 600;
    }
    .highlight-value {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
    }

    /* 3. Main Reading Section with Sticky Sidebar */
    .article-main-layout {
      display: grid;
      grid-template-columns: 1fr 340px;
      gap: 48px;
      align-items: start;
    }
    .article-content-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 48px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .article-cover-wrap {
      margin-bottom: 36px;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
    }
    .article-body-text {
      font-size: 1.08rem;
      color: #334155;
      line-height: 1.85;
      word-break: break-word;
    }
    .article-body-text p {
      margin-bottom: 24px;
    }
    .article-body-text h2, .article-body-text h3 {
      color: var(--text-main);
      font-weight: 750;
      margin: 36px 0 16px;
      letter-spacing: -0.3px;
    }
    .article-body-text h2 {
      font-size: 1.6rem;
      border-bottom: 2px solid var(--bg-alt);
      padding-bottom: 8px;
    }
    .article-body-text h3 {
      font-size: 1.3rem;
    }
    .article-body-text ul, .article-body-text ol {
      margin: 0 0 24px 28px;
    }
    .article-body-text li {
      margin-bottom: 8px;
    }
    .article-body-text blockquote {
      border-left: 4px solid var(--primary);
      background: var(--bg-alt);
      padding: 16px 24px;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      margin: 28px 0;
      font-style: italic;
      color: var(--text-sub);
    }
    .article-empty-state {
      padding: 64px 24px;
      text-align: center;
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px dashed var(--border-light);
    }
    .article-empty-state h3 {
      font-size: 1.4rem;
      color: var(--text-sub);
      margin-bottom: 16px;
    }
    .btn-return {
      display: inline-block;
      background: var(--primary);
      color: #ffffff;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
    }

    /* Sidebar modules */
    .article-sidebar {
      display: flex;
      flex-direction: column;
      gap: 32px;
      position: sticky;
      top: 96px;
    }
    .sidebar-widget {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .widget-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 18px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-light);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .widget-lead {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .meta-kv-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 0.92rem;
    }
    .meta-kv-list li {
      display: flex;
      justify-content: space-between;
      color: var(--text-sub);
    }
    .meta-kv-list strong {
      color: var(--text-main);
    }
    .sidebar-cta-box {
      background: linear-gradient(135deg, #0f172a, #1e1b4b);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .sidebar-cta-box h4 {
      font-size: 1.25rem;
      font-weight: 750;
      margin-bottom: 10px;
    }
    .sidebar-cta-box p {
      font-size: 0.9rem;
      color: #cbd5e1;
      margin-bottom: 20px;
      line-height: 1.6;
    }

    /* 4. Indicators & Metrics spec bar */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .metric-number {
      font-size: 2.5rem;
      font-weight: 850;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
      font-family: var(--font-mono);
    }
    .metric-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 5. Architecture Comparison Matrix */
    .compare-table-wrap {
      overflow-x: auto;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-light);
    }
    .compare-table th {
      background: var(--bg-alt);
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .badge-highlight {
      display: inline-block;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      background: rgba(16, 185, 129, 0.12);
      color: #059669;
      font-weight: 700;
      font-size: 0.82rem;
    }

    /* 6. Pipeline Flow cards */
    .pipeline-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .pipeline-steps {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .pipeline-step-item {
      display: flex;
      gap: 18px;
      background: var(--bg-card);
      padding: 22px;      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .step-badge {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 750;
      flex-shrink: 0;
      font-size: 0.95rem;
    }
    .step-body h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .step-body p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 7. FAQ Accordion */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .faq-item {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      font-size: 1.1rem;
      font-weight: 750;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-question::before {
      content: "Q";
      font-size: 0.85rem;
      background: var(--accent-soft);
      color: var(--accent);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 800;
    }
    .faq-answer {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 8. Conversion CTA section */
    .cta-banner {
      background: radial-gradient(circle at 15% 50%, rgba(79, 70, 229, 0.35) 0%, rgba(9, 13, 22, 1) 90%), var(--bg-dark);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      color: #ffffff;
      border: 1px solid var(--border-dark);
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .cta-banner h3 {
      font-size: 2.2rem;
      font-weight: 850;
      margin-bottom: 16px;
      line-height: 1.25;
    }
    .cta-banner p {
      font-size: 1.05rem;
      color: #cbd5e1;
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
      background: rgba(255, 255, 255, 0.04);
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }
    .cta-form input {
      background: #1e293b;
      border: 1px solid #334155;
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      color: #ffffff;
      font-size: 0.95rem;
      outline: none;
    }
    .cta-form input:focus {
      border-color: var(--accent);
    }
    .btn-submit {
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      border: none;
      padding: 14px 24px;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 14px var(--primary-glow);
    }
    .btn-submit:hover {
      filter: brightness(1.1);
    }

    /* Footer styles */
    .site-footer {
      background: #090d16;
      color: #94a3b8;
      padding: 72px 0 36px;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.35rem;
      font-weight: 750;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      font-size: 0.92rem;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-col a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-col a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 32px;
      border-top: 1px solid #1e293b;
      font-size: 0.88rem;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .highlight-grid, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .article-main-layout {
        grid-template-columns: 1fr;
      }
      .article-sidebar {
        position: static;
      }
      .pipeline-grid, .cta-banner {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .article-hero-title { font-size: 1.85rem; }
      .section { padding: 56px 0; }
      .article-content-card { padding: 24px; }
      .faq-grid { grid-template-columns: 1fr; }
      .highlight-grid, .metrics-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
      .cta-banner { padding: 36px 20px; }
    }