/* ============================================
   导航站/Dashboard风格 - 暗色主题
   配色: #18181b / #27272a / #f59e0b
   ============================================ */

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

:root {
  --bg-primary: #18181b;
  --bg-secondary: #27272a;
  --bg-card: #27272a;
  --bg-content: #fafafa;
  --border-color: #3f3f46;
  --border-hover: #f59e0b;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-dark: #18181b;
  --radius: 8px;
  --radius-lg: 12px;
  --container-max: 1200px;
  --font-family: "Inter", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}

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

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

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
  gap: 8px;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--text-dark);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: var(--text-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

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

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 17px;
  border-radius: var(--radius-lg);
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-accent-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover), var(--accent));
}

.header-main {
  background-color: var(--bg-secondary);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

.site-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

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

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-download {
  font-size: 13px;
  padding: 8px 16px;
  white-space: nowrap;
}

.header-cta {
  font-size: 13px;
  padding: 8px 20px;
  white-space: nowrap;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* --- Hero Section --- */
.hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.hero-title {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.hero-description {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

/* Hero actions & note */
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-note {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* --- Section Titles --- */
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header .section-title {
  margin-bottom: 0;
}

.section-link {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}

.section-link:hover {
  color: var(--accent-hover);
}

/* --- Quick Links Grid (导航站快捷入口) --- */
.quick-links {
  padding: 60px 0;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.quick-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  transition: all 0.25s ease;
  color: var(--text-primary);
}

.quick-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
}

.quick-card-cta {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, var(--bg-card) 100%);
}

.quick-icon {
  font-size: 40px;
  margin-bottom: 12px;
  display: block;
  line-height: 1;
}

.quick-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.quick-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Posts Grid --- */
.latest-posts {
  padding: 0 0 60px;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.posts-grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.post-card {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.25s ease;
  color: var(--text-primary);
}

.post-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
}

.post-card-body {
  padding: 24px;
}

.post-card-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.post-card-tags {
  display: flex;
  gap: 6px;
}

.card-tag {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

/* --- Tags Grid --- */
.tags-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.tag-card {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: all 0.25s ease;
}

.tag-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.tag-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.tag-card-count {
  font-size: 13px;
  color: var(--text-muted);
}

/* --- Post Page --- */
.post-page {
  padding: 32px 0 60px;
}

.post-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 3px solid var(--accent);
}

.post-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--text-muted);
}

.post-tags {
  display: flex;
  gap: 8px;
}

.tag-link {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
}

.tag-link:hover {
  background-color: rgba(245, 158, 11, 0.2);
}

/* --- Post Content Card --- */
.post-content-card {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 48px;
}

/* --- Prose (文章正文样式) --- */
.prose {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

.prose h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text-primary);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.prose h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

.prose h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--text-primary);
}

.prose p {
  margin-bottom: 16px;
}

.prose a {
  color: var(--accent-hover);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

.prose ul,
.prose ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.prose li {
  margin-bottom: 6px;
}

.prose blockquote {
  border-left: 4px solid var(--accent);
  padding: 12px 20px;
  margin: 20px 0;
  background-color: rgba(245, 158, 11, 0.06);
  color: var(--text-secondary);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.prose pre {
  background-color: #1e1e2e;
  color: #cdd6f4;
  padding: 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 20px 0;
  font-size: 14px;
  line-height: 1.6;
}

.prose code {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.prose pre code {
  background: none;
  color: inherit;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

.prose img {
  border-radius: var(--radius);
  margin: 20px 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

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

.prose th {
  background-color: rgba(255, 255, 255, 0.05);
  font-weight: 600;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 32px 0;
}

/* --- Post CTA inline --- */
.post-cta-inline {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.post-cta-inline .cta-card {
  background-color: var(--bg-secondary);
}

/* --- CTA Card --- */
.cta-card {
  background-color: var(--bg-card);
  border: 2px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  margin: 40px 0;
}

.cta-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.cta-description {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

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

/* Post top CTA bar */
.post-top-cta {
  background-color: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: var(--radius);
  padding: 12px 20px;
  text-align: center;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

.post-top-cta a {
  color: var(--accent);
  font-weight: 600;
}

/* Download CTA in post */
.download-cta {
  margin: 32px 0;
  padding: 24px;
  background-color: rgba(245, 158, 11, 0.05);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: var(--radius-lg);
  text-align: center;
}

.download-cta-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.download-cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer CTA & affiliate */
.footer-cta {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.footer-affiliate {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* --- Related Posts --- */
.related-posts {
  margin-top: 48px;
}

/* --- Page Content --- */
.page-content {
  padding: 32px 0 60px;
}

.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--text-secondary);
}

.page-body-card {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 32px;
}

/* --- Tag Page --- */
.tag-page {
  padding: 32px 0 60px;
}

.tag-header {
  margin-bottom: 32px;
}

.tag-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.tag-description {
  font-size: 16px;
  color: var(--text-secondary);
}

/* --- Breadcrumb --- */
.breadcrumb {
  margin-bottom: 24px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
}

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

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

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

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 8px;
  color: var(--text-muted);
}

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

/* --- 404 Error Page --- */
.error-page {
  padding: 100px 0;
  text-align: center;
}

.error-code {
  font-size: 120px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.error-description {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

/* --- Footer --- */
.site-footer {
  margin-top: 60px;
}

.footer-main {
  background-color: var(--bg-secondary);
  padding: 48px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 40px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 12px;
}

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

.footer-heading {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
}

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

.risk-warning {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  padding: 12px;
  background-color: rgba(245, 158, 11, 0.05);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}

.footer-bottom {
  background-color: var(--bg-primary);
  padding: 16px 0;
  text-align: center;
}

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

/* --- Bottom CTA Section --- */
.bottom-cta {
  padding: 0 0 60px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .quick-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-risk {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 48px 0 40px;
  }

  .hero-title {
    font-size: 28px;
  }

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

  .quick-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .quick-card {
    padding: 20px 14px;
  }

  .quick-icon {
    font-size: 32px;
  }

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

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

  .post-content-card,
  .page-body-card {
    padding: 24px;
  }

  .post-title,
  .page-title,
  .tag-title {
    font-size: 24px;
  }

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

  .footer-risk {
    grid-column: auto;
  }

  /* Mobile nav */
  .site-nav {
    display: none;
  }

  .header-actions,
  .header-cta {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .site-header.nav-open .site-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 67px;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 4px;
  }

  .site-header.nav-open .site-nav .nav-link {
    padding: 10px 14px;
  }

  .site-header.nav-open .header-cta {
    display: inline-flex;
    margin: 8px 20px 16px;
  }

  .error-code {
    font-size: 80px;
  }

  .error-actions {
    flex-direction: column;
    align-items: center;
  }

  .cta-card {
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .quick-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .quick-card {
    padding: 16px 10px;
  }

  .quick-icon {
    font-size: 28px;
    margin-bottom: 8px;
  }

  .quick-title {
    font-size: 14px;
  }

  .quick-desc {
    font-size: 12px;
  }

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

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}
/* Guide summary (TOC) */
.guide-summary{background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.25);border-radius:8px;padding:16px 20px;margin:0 0 24px}
.guide-summary-title{font-weight:700;font-size:.9rem;color:var(--accent);margin-bottom:10px}
.guide-summary-list{list-style:none;padding:0;margin:0}
.guide-summary-list li{padding:6px 0;border-bottom:1px solid rgba(245,158,11,.15)}
.guide-summary-list li:last-child{border-bottom:none}
.guide-summary-list a{color:var(--accent-hover);text-decoration:none;font-size:.9rem}
.guide-summary-list a:hover{color:var(--accent);text-decoration:underline}
/* Analyst box (author) */
.analyst-box{display:flex;gap:14px;align-items:center;padding:16px 20px;margin:24px 0;background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.25);border-radius:8px}
.analyst-icon{font-size:1.5rem;flex-shrink:0}
.analyst-info{display:flex;flex-direction:column;gap:3px}
.analyst-name{font-size:.95rem;font-weight:600;color:var(--accent)}
.analyst-desc{font-size:.8rem;color:var(--text-secondary)}
/* Post meta extras */
.post-meta-reading,.post-meta-modified{font-size:.8rem;color:#9ca3af;margin-left:10px}
/* Language switcher */
.lang-list{display:flex;gap:0;margin-right:6px;list-style:none;padding:0;border:1px solid rgba(128,128,128,.2);border-radius:4px;overflow:hidden}
.lang-list li a{display:block;font-size:.75rem;padding:3px 7px;color:var(--text-muted,#999);text-decoration:none;transition:all .2s;border-right:1px solid rgba(128,128,128,.15)}
.lang-list li:last-child a{border-right:none}
.lang-list li a:hover{color:var(--text,#333);background:rgba(128,128,128,.1)}
.lang-list .lang-list__on a{color:var(--primary,#f0b90b);background:rgba(240,185,11,.08);font-weight:600}