@font-face {
  font-family: "Inter";
  src: url("../fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../fonts/InterVariable-Italic.woff2") format("woff2");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-text: #1a2430;
  --color-muted: #5b6b7a;
  --color-accent: #1f6f8b;
  --color-accent-dark: #16505f;
  --max-width: 72rem;
  --radius: 0.75rem;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  padding: 2.5rem 0 1.5rem;
  text-align: center;
}

.site-header h1 {
  margin: 0;
  max-width: 48rem;
  margin-inline: auto;
  font-size: clamp(1.5rem, 2.5vw + 1rem, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.hero {
  display: flex;
  justify-content: center;
  padding: 1.5rem 1.25rem;
}

.hero-image {
  width: 100%;
  max-width: 42rem;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.download {
  display: flex;
  justify-content: center;
  padding: 1rem 1.25rem 3rem;
}

.download-button {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.75rem;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(31, 111, 139, 0.3);
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.download-button:hover,
.download-button:focus-visible {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.download-button:active {
  transform: translateY(0);
}

.download-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.site-footer {
  padding: 1.5rem 0 2rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}

@media (max-width: 40rem) {
  .site-header {
    padding: 1.75rem 0 1rem;
  }

  .download-button {
    width: 100%;
    justify-content: center;
    max-width: 22rem;
  }
}