:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --primary-glow: #60a5fa;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --bg-dark: #0a0e1a;
  --bg-dark-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-card-hover: #1f2537;
  --text-white: #f1f5f9;
  --text-light: #cbd5e1;
  --text-muted: #94a3b8;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 999px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 68px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  font-size: 16px;
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.toggle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
}

.logo img {
  width: 36px;
  height: 36px;
}

.logo span {
  background: linear-gradient(135deg, var(--primary-light), var(--primary-glow));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active,
.nav-links a[aria-current="page"] {
  color: var(--text-white);
  background: rgba(37, 99, 235, 0.15);
}

.nav-links a.active,
.nav-links a[aria-current="page"] {
  color: var(--primary-glow);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid var(--border-card);
}

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

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.menu-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.menu-icon-bar {
  width: 22px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
}

.breadcrumb {
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

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

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

.hero-section {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero-glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
}

.hero-glow-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -150px;
  right: -100px;
}

.hero-glow-orb-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-green);
  bottom: -100px;
  left: -100px;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--primary-glow);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero-title-highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--primary-glow));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 520px;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-mockup {
  width: 320px;
  height: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.hero-mockup-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-glow));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-mockup-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
  animation: glowPulse 2.5s infinite;
}

.hero-mockup-btn:hover {
  box-shadow: 0 0 30px rgba(37, 99, 235, 0.6);
  transform: scale(1.05);
}

@keyframes glowPulse {
  0%,
  100% { box-shadow: 0 0 20px rgba(37, 99, 235, 0.3); }
  50% { box-shadow: 0 0 40px rgba(37, 99, 235, 0.6); }
}

.hero-mockup-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stats-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-glow));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.section {
  padding: 80px 0;
}

.section-dark {
  background: var(--bg-dark-secondary);
}

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

.section-label {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--primary-glow);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 600px;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-smooth);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.card-icon-blue { background: rgba(37, 99, 235, 0.15); color: var(--primary-glow); }
.card-icon-green { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.card-icon-purple { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-smooth);
}

.scenario-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-4px);
}

.scenario-icon {
  font-size: 2.5rem;
  margin-bottom: 14px;
}

.scenario-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.scenario-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.features-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.feature-detail-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all var(--transition-smooth);
}

.feature-detail-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
}

.feature-detail-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: rgba(37, 99, 235, 0.1);
}

.feature-detail-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.feature-detail-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}

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

.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.08), var(--bg-card));
  box-shadow: var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 24px;
  list-style: none;
}

.pricing-features li {
  padding: 6px 0;
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features li::before {
  content: "✓";
  color: var(--accent-green);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-features li.disabled {
  color: var(--text-muted);
}

.pricing-features li.disabled::before {
  content: "-";
  color: var(--text-muted);
}

.pricing-card .btn-primary,
.pricing-card .btn-outline {
  width: 100%;
  margin-top: auto;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.review-card:hover {
  background: var(--bg-card-hover);
}

.review-stars {
  color: var(--accent-orange);
  font-size: 1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.review-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.review-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.cta-section {
  position: relative;
  padding: 100px 0;
  text-align: center;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: var(--primary);
  filter: blur(120px);
  opacity: 0.1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 32px;
}

footer {
  background: var(--bg-dark-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.7;
}

.footer-logo img {
  width: 32px;
  height: 32px;
}

.footer-col h2 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-white);
}

.footer-col a {
  display: block;
  padding: 4px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-col a:hover,
.footer-col a[aria-current="page"] {
  color: var(--primary-glow);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.page-main {
  padding: 12px 0 80px;
}

.prose {
  max-width: 800px;
}

.prose h1 {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 12px 0 16px;
}

.prose .lead {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.prose h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 32px 0 12px;
}

.prose p,
.prose li {
  color: var(--text-light);
  font-size: 1rem;
}

.prose p {
  margin-bottom: 14px;
}

.prose ol,
.prose ul.bullets {
  list-style: disc;
  margin: 0 0 16px 1.25em;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin: 8px 0;
}

.prose a {
  color: var(--primary-glow);
}

.updated {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.related {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.related ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.related a {
  color: var(--primary-glow);
}

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons,
  .hero-badge {
    justify-content: center;
  }

  .hero-mockup {
    width: 260px;
    height: 320px;
  }

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

  .scenarios-grid,
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 8px 16px 16px;
    background: rgba(10, 14, 26, 0.98);
    border-bottom: 1px solid var(--border-subtle);
  }

  .toggle-input:checked ~ header .nav-links {
    display: flex;
  }

  .menu-toggle-label {
    display: flex;
  }

  .hero-title,
  .prose h1 {
    font-size: 2rem;
  }

  .section-title,
  .cta-title {
    font-size: 1.6rem;
  }

  .cards-grid,
  .scenarios-grid,
  .pricing-grid,
  .reviews-grid,
  .features-detail-grid {
    grid-template-columns: 1fr;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-number {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.6rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-badge-dot,
  .hero-mockup-btn { animation: none; }
  .card:hover,
  .scenario-card:hover,
  .pricing-card:hover,
  .btn-primary:hover { transform: none; }
}