:root {
  --bg: #070b13;
  --bg-soft: #0e1623;
  --panel: rgba(15, 22, 35, 0.84);
  --panel-strong: rgba(20, 30, 47, 0.96);
  --line: rgba(138, 171, 219, 0.28);
  --text: #eef5ff;
  --muted: #a7b7cf;
  --accent: #6fe7ff;
  --accent-strong: #2f84ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.48);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "DM Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(47, 132, 255, 0.18), transparent 28%),
    radial-gradient(circle at 20% 20%, rgba(111, 231, 255, 0.12), transparent 18%),
    linear-gradient(180deg, #0a1018 0%, #070b13 42%, #05070d 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 100% 4px;
  opacity: 0.12;
  pointer-events: none;
}

.page-shell {
  width: min(1360px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 72px;
}

.hero {
  position: relative;
  padding: 58px 24px 26px;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 50%;
  width: min(420px, 80vw);
  height: 180px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(111, 231, 255, 0.2), transparent 68%);
  filter: blur(18px);
  pointer-events: none;
}

.section-kicker,
.model-tag {
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 18px;
  font-family: "Sora", sans-serif;
  font-size: clamp(2.9rem, 8vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero-copy {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 28px 20px 0;
}

.instructions-card {
  width: 100%;
  margin: 0 auto;
  padding: 28px 32px;
  text-align: left;
  border: 1px solid rgba(138, 171, 219, 0.2);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(16, 26, 41, 0.94), rgba(10, 17, 29, 0.98));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

.instructions-card h2 {
  margin: 0 0 14px;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  letter-spacing: -0.03em;
}

.hero p {
  width: 100%;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.14rem);
  line-height: 1.8;
}

.hero p + p {
  margin-top: 14px;
}

.hero-lead {
  color: var(--text);
  font-size: clamp(1.16rem, 1.8vw, 1.42rem);
  font-weight: 600;
  line-height: 1.65;
}

.catalog-header {
  display: flex;
  align-items: end;
  justify-content: flex-start;
  gap: 18px;
  margin: 30px 0 28px;
}

.section-kicker {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 700;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.model-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(17, 27, 42, 0.96), rgba(10, 16, 28, 0.98));
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: translateY(22px);
  opacity: 0;
  animation: card-in 700ms ease forwards;
}

.model-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background: linear-gradient(180deg, transparent, rgba(111, 231, 255, 0.05));
  pointer-events: none;
}

.video-frame {
  position: relative;
  aspect-ratio: 4 / 5.9;
  margin: 14px 14px 0;
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 5%, rgba(111, 231, 255, 0.16), transparent 30%),
    linear-gradient(180deg, #09111d 0%, #050912 100%);
}

.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.model-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 1;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(5, 10, 18, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(10px);
  font-size: 0.74rem;
  font-weight: 700;
}

.card-body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 20px 18px 18px;
  background:
    linear-gradient(180deg, rgba(122, 153, 184, 0.2), rgba(66, 81, 103, 0.38)),
    rgba(14, 22, 35, 0.92);
}

.card-copy h3 {
  margin: 0 0 6px;
  font-size: 1.32rem;
}

.card-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.card-actions {
  display: flex;
  gap: 12px;
}

.btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(179, 214, 255, 0.38);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(111, 231, 255, 0.72);
}

.btn-primary {
  color: #04111c;
  background: linear-gradient(135deg, var(--accent), #dff9ff);
}

.btn-secondary {
  color: var(--text);
  background: rgba(8, 15, 25, 0.66);
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(111, 231, 255, 0.22);
  background: rgba(8, 15, 25, 0.9);
  box-shadow: var(--shadow);
  color: var(--text);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes card-in {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 780px) {
  .page-shell {
    width: min(100% - 20px, 1240px);
    padding-top: 28px;
  }

  .hero {
    padding-inline: 8px;
  }

  .hero-copy {
    padding: 22px 0 0;
  }

  .instructions-card {
    padding: 22px 18px;
  }

  .hero p {
    line-height: 1.72;
  }

  .catalog-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}