* {
  box-sizing: border-box;
}

:root {
  --bg: #100f18;
  --panel: #1b1828;
  --panel-2: #261f38;
  --text: #f7f3ed;
  --muted: #c8bdaf;
  --hot: #ff4a2f;
  --acid: #b6ff3b;
  --purple: #6e38ff;
  --line: rgba(255,255,255,.16);
  --shadow: 0 24px 60px rgba(0,0,0,.35);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(110,56,255,.35), transparent 38rem),
    radial-gradient(circle at bottom right, rgba(255,74,47,.22), transparent 34rem),
    var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  max-width: 820px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(16,15,24,.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.logo {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
  text-decoration: none;
  color: var(--acid);
}

nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .95rem;
}

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

.hero {
  padding: 92px 0 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  color: var(--acid);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-weight: 800;
  font-size: .78rem;
  margin: 0 0 14px;
}

h1, h2, h3 {
  line-height: 1.05;
  margin: 0 0 18px;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 5.7rem);
  letter-spacing: -.06em;
  max-width: 900px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -.04em;
}

h3 {
  font-size: 1.35rem;
}

.hero-copy {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--muted);
  max-width: 720px;
}

.hero-actions,
.contact-box {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .82rem;
  border: 1px solid transparent;
}

.button.primary {
  background: var(--hot);
  color: white;
  box-shadow: 0 12px 28px rgba(255,74,47,.25);
}

.button.primary:hover {
  transform: translateY(-1px);
}

.button.ghost {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255,255,255,.06);
}

.hero-card,
.card,
.offer,
.notice,
.contact-box {
  background: linear-gradient(145deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 30px;
}

.hero-card h2 {
  font-size: 1.45rem;
  color: var(--hot);
}

ul {
  padding-left: 1.15rem;
  margin: 0;
}

li {
  margin: 0 0 10px;
}

.section {
  padding: 74px 0;
}

.section.dark {
  background: rgba(0,0,0,.22);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section p {
  color: var(--muted);
  font-size: 1.05rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.card {
  padding: 24px;
}

.card h3 {
  color: var(--acid);
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 30px;
}

.offer {
  padding: 30px;
}

.offer.featured {
  border-color: rgba(182,255,59,.45);
}

.price {
  font-size: 2rem !important;
  font-weight: 900;
  color: var(--acid) !important;
  margin: 0 0 16px;
}

.notice {
  padding: 26px;
  margin-top: 28px;
}

.notice h3 {
  color: var(--hot);
}

.split {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 38px;
  align-items: start;
}

.contact {
  text-align: center;
}

.contact-box {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  padding: 18px;
}

.tiny {
  font-size: .8rem !important;
  color: rgba(247,243,237,.72) !important;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 34px 0;
  color: var(--muted);
  text-align: center;
}

.offer-single {
  margin-top: 32px;
  display: flex;
  justify-content: center;
}

@media (max-width: 850px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  nav {
    justify-content: flex-start;
  }

  .hero-grid,
  .offer-grid,
  .split {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    padding-top: 54px;
  }

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

  .button {
    width: 100%;
  }

  .contact-box {
    width: 100%;
  }
}