/* 宝妈云 - Premium Technology SaaS Stylesheet */

:root {
  --bg-main: #0a0d14;
  --bg-card: rgba(18, 24, 38, 0.7);
  --bg-card-hover: rgba(26, 35, 56, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-normal: 0.25s ease;
  --max-width: 1200px;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 50% -20%, rgba(99, 102, 241, 0.15), transparent 70%),
              radial-gradient(circle at 0% 40%, rgba(6, 182, 212, 0.08), transparent 50%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
  position: relative;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, #a5b4fc 70%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: #a5b4fc;
  margin-bottom: 1.25rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-emerald);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem auto;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 13, 20, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1rem;
  box-shadow: 0 0 15px var(--primary-glow);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.925rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color var(--transition-normal);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #ffffff;
  font-weight: 600;
  font-size: 0.925rem;
  border-radius: var(--radius-md);
  border: none;
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.925rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Hero Section */
.hero {
  padding: 4rem 0 5rem 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 540px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.hero-features-list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.hero-features-list li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.check-icon {
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Dynamic Network Dashboard */
.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.dashboard-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.dash-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.dash-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border-radius: var(--radius-full);
  font-weight: 600;
}

.dash-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.dash-stat-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  text-align: center;
}

.dash-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.dash-stat-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.2rem;
}

/* Nodes Status Visualizer */
.nodes-visualizer {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.85rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.flag-icon {
  font-size: 1rem;
}

.node-ping {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-family: monospace;
  color: var(--accent-emerald);
}

.ping-bar {
  width: 40px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.ping-bar-inner {
  height: 100%;
  background: var(--accent-emerald);
  width: 85%;
  animation: pulse-bar 2s infinite ease-in-out;
}

@keyframes pulse-bar {
  0%, 100% { opacity: 0.7; width: 80%; }
  50% { opacity: 1; width: 95%; }
}

/* Core Advantages (Bento Grid) */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.4);
  background: var(--bg-card-hover);
}

.bento-icon {
  width: 48px;
  height: 48px;
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--primary);
}

.bento-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.bento-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* AI & Streaming Section */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.scenario-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.scenario-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
}

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.tag-item {
  padding: 0.4rem 0.85rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.15) 0%, rgba(18, 24, 38, 0.9) 100%);
  border: 2px solid var(--primary);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.2);
}

.popular-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.pricing-price span {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-dim);
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pricing-features li {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* SEO Blog Cards Section */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.blog-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 102, 241, 0.4);
}

.blog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.blog-category {
  color: var(--accent-cyan);
  font-weight: 600;
}

.blog-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.65rem;
}

.blog-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.blog-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.blog-link:hover {
  text-decoration: underline;
}

/* Testimonials Section */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.testimonial-text {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(6, 182, 212, 0.4));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.author-info h4 {
  font-size: 0.9rem;
  font-weight: 600;
}

.author-info p {
  font-size: 0.775rem;
  color: var(--text-dim);
}

/* FAQ Accordion Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform 0.3s ease;
  color: var(--text-dim);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 1000px;
  padding: 0 1.5rem 1.25rem 1.5rem;
  transition: max-height 0.3s ease-in-out, padding 0.3s ease;
}

/* Footer Section */
.site-footer {
  background: #06080d;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.85rem;
  max-width: 300px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-recommended {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-recommended span {
  color: var(--text-dim);
}

.footer-recommended a {
  color: #a5b4fc;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-recommended a:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* Article Subpage Layout Styles */
.article-header {
  padding: 3rem 0 2rem 0;
  text-align: left;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

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

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

.article-content {
  max-width: 860px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
  color: #cbd5e1;
}

.article-content h1 {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 2.5rem 0 1rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 1.75rem 0 0.75rem 0;
}

.article-content p {
  margin-bottom: 1.25rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.925rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-content th, .article-content td {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

.article-content th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  font-weight: 600;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2.5rem 0;
  text-align: center;
}

.article-cta-box h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.related-articles {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .bento-grid, .pricing-grid, .blog-grid, .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.25rem;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 4.25rem;
    left: 0;
    right: 0;
    background: #0d111a;
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    align-items: flex-start;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .scenarios-grid, .bento-grid, .pricing-grid, .blog-grid, .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .dash-stats-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}