:root {
  --bg: #f8fafc;
  --bg-subtle: #f1f5f9;
  --surface: #ffffff;
  --surface-hover: #fafafa;
  --border: #e2e8f0;
  --border-subtle: #edf2f7;
  --border-focus: #94a3b8;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-faint: #94a3b8;
  
  --accent: #0f172a;
  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --accent-blue-subtle: #eff6ff;
  --accent-blue-border: #bfdbfe;
  
  --status-live: #10b981;
  --status-live-bg: #ecfdf5;
  --status-live-border: #a7f3d0;
  --status-live-text: #065f46;
  
  --status-dev: #f59e0b;
  --status-dev-bg: #fffbeb;
  --status-dev-border: #fde68a;
  --status-dev-text: #92400e;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
  
  --container-width: 1040px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
  --transition: 0.15s ease-in-out;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  font-size: 15px;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-text {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
}

.header-cta:hover {
  border-color: var(--text-muted);
  background-color: var(--surface-hover);
}

/* Hero Section */
.hero-section {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.7) 0%, rgba(248,250,252,0) 100%);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 9999px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-blue);
}

.hero-title {
  font-size: 42px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-primary);
  max-width: 800px;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 680px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background-color: #1e293b;
  border-color: #1e293b;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: var(--text-muted);
}

/* Key Attributes Row */
.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.trust-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.trust-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.trust-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Common Section Styles */
.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 36px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-blue);
  margin-bottom: 8px;
}

.section-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.section-lead {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 620px;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 16px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-principles {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.principle-card {
  padding: 18px 20px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.principle-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.principle-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* Expertise Grid (6 Cards, Rhodatech style) */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.expertise-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.expertise-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.expertise-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.2px;
}

.expertise-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Products Section */
.products-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.product-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: start;
  transition: all var(--transition);
}

.product-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.product-card.dimmed {
  background-color: rgba(255, 255, 255, 0.7);
}

.product-logo {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
  border: 1px solid #1e293b;
}

.product-logo.spark {
  background-color: #0284c7;
  border-color: #0369a1;
}

.product-content {
  display: flex;
  flex-direction: column;
}

.product-meta-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.product-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.live {
  background-color: var(--status-live-bg);
  border: 1px solid var(--status-live-border);
  color: var(--status-live-text);
}

.status-badge.live .badge-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--status-live);
}

.status-badge.dev {
  background-color: var(--status-dev-bg);
  border: 1px solid var(--status-dev-border);
  color: var(--status-dev-text);
}

.status-badge.dev .badge-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--status-dev);
}

.product-category {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.product-tagline {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 16px;
  max-width: 640px;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-pill {
  padding: 3px 9px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.product-action {
  display: flex;
  align-items: center;
  align-self: center;
}

.product-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition);
}

.product-btn:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.product-btn.disabled {
  background-color: var(--bg-subtle);
  border-color: var(--border-subtle);
  color: var(--text-faint);
  cursor: default;
  pointer-events: none;
}

/* Contact Section */
.contact-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
}

.contact-info h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.contact-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 16px;
}

.contact-guidance {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.45;
  border-left: 2px solid var(--border);
  padding-left: 12px;
}

.contact-action-box {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.email-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.email-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.email-actions {
  display: flex;
  gap: 10px;
}

.btn-mail {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
}

.btn-mail:hover {
  background-color: #1e293b;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-copy:hover {
  background-color: var(--surface-hover);
  border-color: var(--text-muted);
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: 40px 0 32px;
  font-size: 13px;
  color: var(--text-muted);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13px;
  transition: color var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-faint);
}

.legal-notice {
  font-size: 11.5px;
  color: var(--text-faint);
  line-height: 1.5;
  margin-top: 8px;
}

/* Toast Notification for Copy */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--accent);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.2s ease;
  pointer-events: none;
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Policy Pages Layout */
.legal-container {
  max-width: 800px;
  margin: 48px auto 80px;
  padding: 0 24px;
}

.legal-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

.legal-card h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.legal-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.legal-body h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 12px;
}

.legal-body p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 14px;
}

.legal-body ul {
  margin-left: 20px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.legal-body li {
  margin-bottom: 6px;
}

/* Responsive Media Queries */
@media (max-width: 880px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-card {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .product-action {
    align-self: flex-start;
  }
  .contact-card {
    grid-template-columns: 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    height: 56px;
  }
  .site-nav {
    display: none;
  }
  .hero-section {
    padding: 48px 0 40px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .trust-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .expertise-grid {
    grid-template-columns: 1fr;
  }
  .legal-card {
    padding: 24px 20px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}