/* Base */
:root {
  --bg: #0b0f1a;
  --text: #f7f7f7;
  --muted: rgba(247, 247, 247, 0.72);
  --primary: #3fa9f5;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.1);
  --radius: 14px;
  --max-width: 1060px;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color: var(--text);
  line-height: 1.6;
  background: radial-gradient(circle at top, rgba(63, 169, 245, 0.2), transparent 60%),
    linear-gradient(180deg, #0b0f1a, #02040a);
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
  padding: 0 1rem;
}

header.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  backdrop-filter: blur(18px);
  background: rgba(11, 15, 26, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 1.2rem;
}

.nav {
  display: flex;
  gap: 1.2rem;
}

.nav a {
  font-weight: 500;
  color: var(--muted);
}

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

.hero {
  padding: clamp(4rem, 15vw, 9rem) 0 6rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 3.4rem);
  margin: 0 0 1rem;
  max-width: 40ch;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  margin: 0 auto 1.75rem;
  max-width: 55ch;
  color: var(--muted);
}

.button {
  display: inline-block;
  background: linear-gradient(135deg, #74d2ff, #3fa9f5);
  color: #0b0f1a;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.025em;
  box-shadow: 0 18px 30px rgba(63, 169, 245, 0.24);
}

.section {
  padding: 4.5rem 0;
}

.section--alt {
  background: rgba(255, 255, 255, 0.03);
}

h2 {
  margin: 0 0 1.25rem;
  font-size: 2.2rem;
}

p {
  margin: 0 0 1.1rem;
}

.cards {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card-footer {
  margin-top: auto;
}

.link {
  display: inline-flex;
  gap: 0.4rem;
  font-weight: 600;
}

.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

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

.contact-list li {
  margin: 0.6rem 0;
  color: var(--muted);
}

.site-footer {
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.35);
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }
  .hero {
    padding: 3.5rem 0 4rem;
  }
}