:root {
  --bg: #f8f9fd;
  --surface: #ffffff;
  --surface-alt: #eef2ff;
  --text: #1b2340;
  --muted: #51607f;
  --primary: #2f6bff;
  --accent: #14b88f;
  --border: #d8e0f0;
}

* {
  box-sizing: border-box;
}

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

.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

.top-nav {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0;
}

.top-nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
}

.top-nav-inner a {
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
}

.hero {
  background: linear-gradient(135deg, #3958c8 0%, #2f6bff 45%, #17b997 100%);
  color: #fff;
  padding: 4.5rem 0;
  text-align: center;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-weight: 700;
  opacity: 0.9;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
}

.subtitle {
  margin: 1rem auto 0;
  max-width: 720px;
  font-size: 1.06rem;
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  padding: 0.75rem 1.15rem;
  border-radius: 10px;
  font-weight: 700;
}

.btn-primary {
  background: #fff;
  color: var(--primary);
}

.btn-outline {
  border: 2px solid #fff;
  color: #fff;
}

.section {
  padding: 3rem 0;
}

.section-alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.card,
.track,
.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.15rem;
}

h2 {
  margin-top: 0;
}

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

.highlight {
  border: 2px solid var(--primary);
  box-shadow: 0 8px 20px rgba(47, 107, 255, 0.14);
}

.contact {
  text-align: center;
}

.contact-box {
  max-width: 760px;
  margin: 0 auto;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-weight: 700;
}

.contact-actions a {
  color: var(--primary);
  text-decoration: none;
}

@media (max-width: 860px) {
  .grid-3,
  .tracks {
    grid-template-columns: 1fr;
  }

  .top-nav-inner {
    flex-direction: column;
  }
}