/* Basic reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

/* Typography & layout */

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #0f172a 0, #020617 55%, #000 100%);
  color: #e5e7eb;
  line-height: 1.6;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 0.75rem;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Hero */

.hero {
  padding: 3.5rem 0 2.5rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy {
  flex: 1 1 280px;
}

.hero-media {
  flex: 1 1 280px;
}

h1 {
  font-size: clamp(2.4rem, 3.4vw + 1.4rem, 3.4rem);
  margin: 0 0 0.5rem;
}

.hero-tagline {
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
  color: #cbd5f5;
}

.hero-highlights {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-highlights li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.3rem;
  font-size: 0.95rem;
  color: #d1d5db;
}

.hero-highlights li::before {
  content: "•";
  position: absolute;
  left: 0.2rem;
  top: 0;
  color: #4ade80;
}

.hero-video {
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.85);
}

.media-caption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: #9ca3af;
}

/* Sections */

.section {
  padding: 2.75rem 0;
}

.section-alt {
  background: rgba(15, 23, 42, 0.75);
}

.section h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.7rem;
  color: #f9fafb;
}

.section p {
  margin: 0 0 0.8rem;
  color: #e5e7eb;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  gap: 2.5rem;
  align-items: flex-start;
}
.text-column {
  position: sticky;
  top: 5rem;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
  color: #d1d5db;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0.55rem;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 999px;
  background: #38bdf8;
}

/* Image column */

.media-column {
  display: grid;
  gap: 0.9rem;
}

/* Footer */

.footer {
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  padding: 1.6rem 0 2.2rem;
  font-size: 0.85rem;
  color: #9ca3af;
}

.footer-inner {
  text-align: center;
}

/* Responsiveness */

@media (max-width: 900px) {
  .section-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .text-column {
    position: static;
  }

  .hero-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-media {
    width: 100%;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 2.4rem;
  }

  .section {
    padding: 2rem 0;
  }
}