:root {
  color-scheme: light;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --border: #e6e8ef;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #e2e8f0;
  --card-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

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

body {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
}

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

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 22px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  background: transparent;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  border-color: var(--border);
  background: #fff;
}

.btn-ghost {
  border-color: transparent;
  color: var(--text-secondary);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  display: block;
}

.brand-mark {
  background: linear-gradient(135deg, #2563eb, #60a5fa);
  color: #fff;
  padding: 8px 16px;
  border-radius: 12px;
  font-size: 18px;
}

.brand-name {
  font-size: 22px;
}

.nav {
  display: flex;
  gap: 18px;
  color: #111;
  font-size: 16px;
  font-weight: 500;
  align-items: center;
}

.nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: inherit;
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
  line-height: 1;
}

.nav a:hover,
.nav a:focus-visible,
.nav a:active,
.nav a.active {
  color: #111;
  border-bottom-color: #111;
}

.nav-badge {
  position: absolute;
  top: -6px;
  right: -12px;
  background: #ef4444;
  color: #fff;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 999px;
  line-height: 1;
}
.header-actions {
  display: flex;
  gap: 10px;
}

.header-actions .btn {
  padding: 8px 16px;
  font-size: 14px;
}

.hero {
  padding: 80px 0 60px;
  background: radial-gradient(circle at top, #eef3ff 0%, #ffffff 60%);
}

.hero-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-size: 12px;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.subhead {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 13px;
}

.hero-meta span {
  background: var(--bg-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

.hero-visual {
  position: relative;
  min-height: 360px;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, #93c5fd, transparent 60%),
    radial-gradient(circle at 70% 60%, #c4b5fd, transparent 60%);
  border-radius: 32px;
  opacity: 0.6;
}

.hero-dashboard {
  position: absolute;
  left: -24px;
  bottom: 12px;
  width: min(520px, 82%);
  max-height: 300px;
  object-fit: cover;
  border-radius: 22px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
  z-index: 2;
  opacity: 0.9;
  filter: saturate(1.05);
}

.hero-illustration {
  position: absolute;
  right: -10px;
  bottom: -8px;
  width: min(520px, 82%);
  max-height: 360px;
  object-fit: contain;
  z-index: 1;
  opacity: 0.95;
}

.section {
  padding: 72px 0;
}

.section-header {
  margin-bottom: 32px;
  text-align: center;
}

.section-header h2 {
  font-size: 30px;
  margin-bottom: 10px;
}

.section-header p {
  color: var(--text-muted);
}

.card-grid,
.module-grid,
.data-grid,
.industry-grid,
.case-grid,
.pricing-grid {
  display: grid;
  gap: 20px;
}

.card-grid,
.module-grid,
.data-grid {
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.data-preview {
  margin: 0 auto 28px;
  background: #fff;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.data-preview img {
  width: 100%;
  display: block;
}

.ai-support {
  background: var(--bg-soft);
}

.ai-badge {
  display: inline-block;
  background: #fee2e2;
  color: #b91c1c;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.ai-new {
  display: inline-block;
  background: #ef4444;
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 999px;
  margin-left: 6px;
  vertical-align: middle;
}

.ai-feature {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: center;
  margin-bottom: 26px;
}

.ai-feature:last-child {
  margin-bottom: 0;
}

.ai-text h3 {
  font-size: 20px;
  margin: 8px 0 10px;
}

.ai-text p {
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.ai-media {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 10px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.08);
}

.ai-media img {
  width: 100%;
  display: block;
  border-radius: 12px;
}

.ai-media.dual {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.card,
.module-card,
.data-card,
.industry-card,
.case-card,
.pricing-card,
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.card h3,
.module-card h3,
.data-card h3,
.industry-card h3 {
  margin-bottom: 10px;
  font-size: 18px;
}

.card p,
.module-card p,
.data-card p,
.industry-card p,
.case-card p,
.faq-item p {
  color: var(--text-muted);
  font-size: 14px;
}

.network-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: center;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.stat {
  background: #fff;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--border);
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
}

.stat-label {
  display: block;
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 13px;
}

.network-map {
  width: 100%;
  border-radius: 24px;
  display: block;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.12);
}

.process {
  background: #fff;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  list-style: none;
  counter-reset: step;
}

.process-steps li {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 18px 20px;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
}

.process-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -12px;
  left: 20px;
  background: #fff;
  border: 1px solid var(--border);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.industries {
  background: var(--bg-soft);
}

.industry-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: start;
}

.case-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.quote {
  font-size: 15px;
  margin-bottom: 12px;
}

.case-meta {
  color: var(--text-muted);
  font-size: 13px;
}

.pricing-table {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.pricing-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
}

.pricing-row:first-child {
  border-top: none;
}

.pricing-head {
  background: var(--bg-soft);
  color: var(--text-primary);
  font-weight: 600;
}

.pricing-notes {
  margin-top: 20px;
  color: var(--text-muted);
  display: grid;
  gap: 8px;
}

.pricing-actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.faq-list {
  display: grid;
  gap: 16px;
}

.contact {
  background: var(--bg-soft);
}

.contact-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: start;
}

.contact-copy h2 {
  font-size: 30px;
  margin-bottom: 12px;
}

.contact-lead {
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.contact-note {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 16px;
}

.contact-options {
  background: #fff;
  border: 2px solid #e0e7ff;
  border-radius: 16px;
  padding: 20px;
  margin: 20px 0;
}

.contact-options-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.contact-options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  transition: all 0.2s;
}

.contact-option:hover {
  background: #e0e7ff;
  border-color: #6366f1;
}

.contact-item {
  cursor: default;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 14px;
}

.contact-link:visited {
  color: var(--text-primary);
}

.contact-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.copy-btn {
  padding: 6px 12px;
  background: #6366f1;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.copy-btn:hover {
  background: #4f46e5;
  transform: scale(1.05);
}

.copy-btn:active {
  transform: scale(0.98);
}

.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  display: grid;
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 13px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form .full {
  grid-column: 1 / -1;
}

.site-footer {
  background: #0f172a;
  color: #e2e8f0;
  padding: 40px 0;
}

.btn-footer {
  margin-top: 14px;
  border-color: rgba(148, 163, 184, 0.4);
  color: #e2e8f0;
}

.btn-footer:hover {
  background: rgba(148, 163, 184, 0.15);
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.brand-footer .brand-mark {
  background: linear-gradient(135deg, #60a5fa, #22d3ee);
}

.brand-footer .brand-logo {
  width: 42px;
  height: 42px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  font-size: 13px;
}

.footer-links h4 {
  margin-bottom: 8px;
  color: #fff;
}

.footer-links a {
  display: block;
  color: inherit;
  margin-bottom: 6px;
}

@media (max-width: 960px) {
  .nav {
    display: none;
  }

  .hero-inner,
  .network-inner,
  .industry-inner,
  .footer-inner,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .ai-feature {
    grid-template-columns: 1fr;
  }

  .ai-media.dual {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 60px;
  }
}

@media (max-width: 640px) {
  .header-actions {
    display: none;
  }

  .hero h1 {
    font-size: 32px;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .hero-meta span {
    font-size: 12px;
  }

  .hero-visual {
    min-height: 280px;
  }

  .hero-dashboard {
    left: 0;
    bottom: 8px;
    width: 100%;
    max-height: 240px;
    opacity: 0.85;
  }

  .hero-illustration {
    right: 0;
    bottom: 0;
    width: 92%;
    max-height: 300px;
  }

  .pricing-table {
    overflow-x: auto;
  }

  .pricing-row {
    min-width: 420px;
  }

  .contact-form {
    padding: 16px;
  }

  .contact-options {
    padding: 16px;
  }

  .contact-options-title {
    font-size: 14px;
  }

  .contact-option {
    font-size: 13px;
    padding: 10px 12px;
    flex-wrap: wrap;
  }

  .contact-link {
    font-size: 13px;
  }

  .copy-btn {
    width: 100%;
    margin-top: 8px;
    margin-left: 0;
  }

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

  .section {
    padding: 56px 0;
  }
}