:root {
  --bg: #f8f5ef;
  --text: #0f172a;
  --muted: #475467;
  --accent: #2563eb;
  --accent-light: #60a5fa;
  --border: rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  line-height: 1.7;
  font-size: 16px;
}

main {
  min-height: 100vh;
}

.container {
  max-width: 720px;
  margin: 64px auto;
  padding: 0 32px 80px;
}

.header {
  display: flex;
  gap: 24px;
  align-items: center;
  margin-bottom: 32px;
}

.header-icon {
  width: 48px;
  height: 48px;
}

h1 {
  margin: 0;
  font-size: 1.9rem;
  letter-spacing: 0.15em;
}

.subtitle {
  margin: 6px 0 0;
  font-size: 1.1rem;
  color: var(--muted);
}

.copy p {
  margin: 0 0 20px;
  font-size: 1rem;
}

.signature {
  font-weight: 500;
  margin-top: 32px;
}

a {
  color: var(--accent);
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-light);
}

.contact {
  border-top: 1px solid var(--border);
  padding-top: 32px;
  margin-top: 56px;
}

.contact h2 {
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}

.contact a {
  font-size: 1.1rem;
  font-weight: 500;
}

@media (max-width: 640px) {
  .container {
    margin: 32px auto 48px;
    padding: 0 20px 48px;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  h1 {
    letter-spacing: 0.12em;
  }

  .header-icon {
    width: 40px;
    height: 40px;
  }
}