:root {
  --background: #0b1020;
  --surface: #151c31;
  --surface-light: #1d2743;
  --text: #f7f7fb;
  --muted: #adb6ce;
  --accent: #77e6b6;
  --accent-dark: #182c28;
  --border: rgba(255, 255, 255, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(119, 230, 182, 0.12), transparent 30%),
    var(--background);
  color: var(--text);
  font-family:
    Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.hero {
  width: min(1180px, calc(100% - 40px));
  min-height: 720px;
  margin: 0 auto;
  padding: 80px 0 120px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 80px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 26px;
  font-size: clamp(3.5rem, 7vw, 6.8rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.hero-description,
.section-intro {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.15rem;
}

.hero-description {
  margin-bottom: 34px;
}

.button {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #09120f;
  font-weight: 800;
}

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

.hero-card {
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(145deg, var(--surface-light), var(--surface));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  transform: rotate(2deg);
}

.card-label {
  display: inline-block;
  margin-bottom: 28px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--accent-dark);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-card h2 {
  margin-bottom: 10px;
  font-size: 2.8rem;
  letter-spacing: -0.04em;
}

.hero-card > p {
  color: var(--muted);
}

.ranking-preview {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.ranking-preview div {
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
}

.ranking-preview span {
  display: inline-grid;
  width: 28px;
  height: 28px;
  margin-right: 12px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #09120f;
  font-weight: 800;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 110px 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  margin-bottom: 18px;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.features {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.features article {
  min-height: 210px;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.035);
}

.features h3 {
  font-size: 1.35rem;
}

.features p {
  color: var(--muted);
}

.about {
  padding-bottom: 150px;
}

footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 30px 0 50px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 850px) {
  nav {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 60px;
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .hero-card {
    transform: none;
  }

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

  footer {
    flex-direction: column;
  }
}