:root {
  --tdai-primary: #005eb8;
  --tdai-primary-bright: #007bff;
  --tdai-secondary: #00bfa5;
  --tdai-accent: #6c757d;
  --tdai-bg: #f8fafc;
  --tdai-bg-soft: #e3f2fd;
  --tdai-text: #333333;
  --tdai-footer: #0a3768;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Roboto", sans-serif;
  background: var(--tdai-bg);
  color: var(--tdai-text);
  line-height: 1.6;
  margin: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10000;
  background: var(--tdai-primary);
  color: #fff;
  padding: 0.5rem 0.75rem;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.tdai-navbar {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid #e2edf8;
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

body.scrolled .tdai-navbar {
  box-shadow: 0 8px 20px rgba(2, 39, 83, 0.12);
  background: rgba(255, 255, 255, 0.985);
}

.logo-mark {
  color: var(--tdai-primary);
}

.logo-text {
  color: var(--tdai-secondary);
}

.nav-link {
  color: #334155;
  font-weight: 500;
  border-radius: 10px;
  padding: 0.55rem 0.75rem !important;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--tdai-primary);
  background: #eaf4ff;
}

.navbar-toggler {
  border: 1px solid #d4e6f7;
  padding: 0.45rem 0.6rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.15rem rgba(0, 94, 184, 0.2);
}

.hero-section {
  min-height: 88vh;
  position: relative;
  background: linear-gradient(120deg, #0f3b71 0%, #005eb8 52%, #00a0dc 100%);
  color: #fff;
  padding-top: 126px;
  padding-bottom: 80px;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.14), transparent 45%);
}

.hero-kicker {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: #cde8ff;
}

.hero-section .lead {
  max-width: 44rem;
  color: #e9f5ff;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.badge-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.38);
  color: #e6f4ff;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 0.38rem 0.72rem;
  font-size: 0.84rem;
  font-weight: 500;
}

.hero-illustration {
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.13);
  padding: 0.65rem;
  box-shadow: 0 24px 40px rgba(1, 23, 46, 0.28);
}

.hero-metrics {
  margin-top: -42px;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}

.metric-card {
  background: #fff;
  border: 1px solid #d7e7f8;
  border-radius: 14px;
  box-shadow: 0 12px 24px rgba(2, 39, 83, 0.1);
  padding: 0.95rem 0.9rem;
  text-align: center;
}

.metric-value {
  margin: 0;
  color: var(--tdai-primary);
  font-weight: 700;
}

.metric-label {
  margin: 0.25rem 0 0;
  color: #64748b;
  font-size: 0.88rem;
}

.section-block {
  padding: 4rem 0;
}

.section-title h2 {
  color: var(--tdai-primary);
  font-weight: 700;
}

.section-title p {
  color: #64748b;
  margin-bottom: 0;
}

.bg-light-blue {
  background: var(--tdai-bg-soft);
}

.intro-section h2 {
  color: var(--tdai-primary);
  font-weight: 700;
}

.intro-stat-card {
  background: #ffffff;
  border: 1px solid #d9e8f8;
  border-radius: 16px;
  box-shadow: 0 12px 24px rgba(15, 59, 113, 0.09);
  padding: 1.2rem 1.1rem;
}

.stat-value {
  color: var(--tdai-primary);
  font-weight: 700;
  margin: 0;
}

.stat-label {
  color: #64748b;
  margin: 0.3rem 0 0;
}

.feature-card,
.tier-card {
  background: #fff;
  border-radius: 16px;
  border: 1px solid #dae8f7;
  box-shadow: 0 8px 22px rgba(2, 39, 83, 0.08);
  padding: 1.35rem 1.2rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover,
.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 26px rgba(2, 39, 83, 0.12);
}

.feature-card h3,
.tier-card h3 {
  color: var(--tdai-primary);
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 0.35rem;
}

.feature-icon {
  color: var(--tdai-primary-bright);
  font-size: 1.15rem;
  width: 2.2rem;
  height: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: #e8f3ff;
}

.benefits-card ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.benefits-card li {
  margin-bottom: 0.35rem;
}

.integration-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.integration-list li {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.45rem;
}

.integration-list i {
  color: var(--tdai-secondary);
}

.scalability-image {
  max-width: 780px;
  border: 1px solid #d7e6f5;
  border-radius: 16px;
  box-shadow: 0 10px 20px rgba(3, 36, 79, 0.12);
}

.contact-form {
  background: #fff;
  border: 1px solid #dae8f7;
  border-radius: 16px;
  padding: 1.2rem;
}

.contact-form .form-control:focus {
  border-color: var(--tdai-primary-bright);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.15);
}

.form-note {
  color: var(--tdai-accent);
  min-height: 1.2rem;
}

.site-footer {
  background: var(--tdai-footer);
  color: #fff;
  padding: 1.1rem 0;
}

.site-footer a {
  color: #fff;
  text-decoration: none;
}

.site-footer a:hover {
  color: #bfe6ff;
}

.btn-primary {
  background-color: var(--tdai-primary-bright);
  border-color: var(--tdai-primary-bright);
}

.btn-primary:hover {
  background-color: var(--tdai-primary);
  border-color: var(--tdai-primary);
}

.btn-success {
  background-color: #28a745;
  border-color: #28a745;
}

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

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

.page-single {
  padding-top: 110px;
  padding-bottom: 3rem;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 991px) {
  .hero-section {
    min-height: auto;
    padding-top: 106px;
    padding-bottom: 2.5rem;
  }

  .hero-metrics {
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 1rem;
  }

  .section-block {
    padding: 3.3rem 0;
  }

  .site-footer .container {
    text-align: center;
    justify-content: center !important;
  }
}

@media (max-width: 767px) {
  .display-5 {
    font-size: 2rem;
  }

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

  .hero-badges {
    margin-bottom: 1.25rem;
  }

  .feature-card,
  .tier-card {
    padding: 1.1rem;
  }

  .nav-link {
    padding: 0.55rem 0.55rem !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .feature-card,
  .tier-card,
  .tdai-navbar,
  .nav-link {
    transition: none;
  }
}