:root {
  --xai-bg: #f7f9fc;
  --xai-surface: #ffffff;
  --xai-surface-2: #f1f5f9;
  --xai-text: #111827;
  --xai-muted: #5f6b7a;
  --xai-border: rgba(17, 24, 39, 0.1);
  --xai-primary: #2563eb;
  --xai-primary-2: #0f766e;
  --xai-accent: #f59e0b;
  --xai-radius: 18px;
  --xai-radius-sm: 12px;
  --xai-shadow: 0 18px 50px rgba(17, 24, 39, 0.1);
  --xai-shadow-sm: 0 10px 24px rgba(17, 24, 39, 0.08);
  --xai-container: 1160px;
  --xai-step--1: clamp(0.88rem, 0.85rem + 0.18vw, 0.98rem);
  --xai-step-0: clamp(1rem, 0.96rem + 0.22vw, 1.12rem);
  --xai-step-1: clamp(1.18rem, 1.08rem + 0.45vw, 1.42rem);
  --xai-step-2: clamp(1.55rem, 1.34rem + 0.95vw, 2.1rem);
  --xai-step-3: clamp(2.1rem, 1.64rem + 2.2vw, 3.4rem);
  --xai-step-4: clamp(2.75rem, 1.92rem + 4vw, 5.4rem);
  --xai-font-heading: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --xai-font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--xai-text);
  font-family: var(--xai-font-body);
  background: var(--xai-bg);
  font-size: var(--xai-step-0);
  line-height: 1.65;
  overflow-x: hidden;
}

img, svg { max-width: 100%; }

img {
  display: block;
  height: auto;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

button, input, textarea, select {
  font: inherit;
}

.xai-page {
  min-height: 100vh;
  background: var(--xai-bg);
}

.xai-container {
  width: min(var(--xai-container), calc(100% - 40px));
  margin-inline: auto;
}

.xai-section {
  padding: clamp(64px, 8vw, 112px) 0;
}

.xai-section-tight {
  padding: clamp(42px, 6vw, 76px) 0;
}

.xai-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--xai-primary);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.xai-kicker::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--xai-primary);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--xai-primary) 14%, transparent);
}

.xai-section-head {
  max-width: 720px;
  margin-bottom: 30px;
}

.xai-section-head.center {
  margin-inline: auto;
  text-align: center;
}

.xai-section-head.center .xai-kicker {
  justify-content: center;
}

.xai-title {
  margin: 0;
  color: var(--xai-text);
  font-family: var(--xai-font-heading);
  font-size: var(--xai-step-3);
  line-height: 1.02;
  font-weight: 900;
}

.xai-subtitle {
  margin: 14px 0 0;
  color: var(--xai-muted);
  font-size: var(--xai-step-0);
  line-height: 1.75;
}

.xai-grid {
  display: grid;
  gap: 20px;
}

.xai-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.xai-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.xai-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.xai-card {
  border: 1px solid var(--xai-border);
  border-radius: var(--xai-radius);
  background: var(--xai-surface);
  box-shadow: var(--xai-shadow-sm);
}

.xai-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 10px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--xai-primary);
  color: #fff;
  font-weight: 850;
  text-decoration: none;
  box-shadow: 0 14px 32px color-mix(in srgb, var(--xai-primary) 26%, transparent);
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.xai-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--xai-primary) 34%, transparent);
}

.xai-btn.secondary {
  background: var(--xai-surface);
  color: var(--xai-text);
  border-color: var(--xai-border);
  box-shadow: none;
}

.xai-btn.dark {
  background: var(--xai-text);
}

.xai-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--xai-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--xai-surface) 86%, transparent);
  color: var(--xai-muted);
  font-size: 0.88rem;
  font-weight: 750;
}

.xai-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--xai-primary) 12%, white);
  color: var(--xai-primary);
  font-weight: 900;
}

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

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

@media (max-width: 900px) {
  .xai-container {
    width: min(100% - 28px, var(--xai-container));
  }

  .xai-grid-2,
  .xai-grid-3,
  .xai-grid-4 {
    grid-template-columns: 1fr;
  }

  .xai-section {
    padding: 58px 0;
  }
}