:root {
  --bg: #0a0a0a;
  --bg-soft: #101418;
  --surface: #141a1f;
  --text: #f2f7fa;
  --muted: #9ca9b3;
  --accent: #06b6d4;
  --accent-strong: #0891b2;
  --border: #21313d;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius-lg: 18px;
  --radius-md: 12px;
  --max-width: 1140px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 10% 10%, rgba(6, 182, 212, 0.12), transparent 30%),
    radial-gradient(circle at 85% 0%, rgba(6, 182, 212, 0.16), transparent 28%),
    linear-gradient(var(--bg), var(--bg));
}

.bg-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black, transparent 85%);
}

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

.container {
  width: min(100% - 2.2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 10, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.03em;
}

.nav nav {
  display: flex;
  gap: 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.2rem;
  padding-block: 5.5rem 3.2rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  max-width: 20ch;
}

.hero-lead {
  color: var(--muted);
  max-width: 52ch;
  margin: 1rem 0 1.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 999px;
  padding: 0.7rem 1.2rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.22s ease, background-color 0.22s ease, border-color 0.22s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(110deg, var(--accent), var(--accent-strong));
  color: #04131a;
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.45);
}

.chat-mock {
  background: linear-gradient(150deg, rgba(6, 182, 212, 0.14), rgba(20, 26, 31, 0.86));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.chat-title {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.bubble {
  width: fit-content;
  max-width: 92%;
  margin-bottom: 0.58rem;
  border-radius: 14px;
  padding: 0.6rem 0.78rem;
  font-size: 0.95rem;
}

.bubble-you {
  margin-left: auto;
  background: #1c2f3a;
}

.bubble-bot {
  background: #11181e;
  border: 1px solid var(--border);
}

.section {
  padding-block: 2.8rem;
}

.section-head {
  max-width: 74ch;
  margin-bottom: 1.2rem;
}

.section-head p {
  color: var(--muted);
  margin-top: 0.72rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(20, 26, 31, 0.75);
  padding: 1rem;
}

.card p {
  color: var(--muted);
  margin: 0.55rem 0 0;
}

.feature-list,
.service-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.75rem;
  color: var(--muted);
}

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

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.step {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(16, 20, 24, 0.8);
  padding: 1rem;
}

.step-num {
  display: inline-flex;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.55rem;
  color: #04131a;
  background: var(--accent);
  font-weight: 700;
}

.step p {
  color: var(--muted);
  margin: 0.45rem 0 0;
}

.cta {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(10, 18, 24, 0.88), rgba(6, 182, 212, 0.1));
  text-align: center;
  padding: 2rem 1rem;
}

.cta p {
  max-width: 60ch;
  margin: 0.8rem auto 1.2rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 3rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 1rem;
  color: var(--muted);
}

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

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .hero,
  .cards,
  .steps,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 4rem;
  }
}

@media (max-width: 700px) {
  .nav {
    flex-wrap: wrap;
    gap: 0.65rem;
    padding-block: 0.6rem;
  }

  .nav nav {
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.2rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    padding-block: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}