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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: #0a0a0a;
  color: #e5e5e5;
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/* Header & logo */
.header {
  padding: clamp(2rem, 6vw, 4rem) clamp(1.5rem, 5vw, 3rem) clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.logo {
  margin: 0;
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #6b6b6b;
  text-transform: none;
}

/* Main content */
.main {
  flex: 1;
  padding: clamp(2rem, 6vw, 4rem) clamp(1.5rem, 5vw, 3rem);
  max-width: 42rem;
}

.tagline {
  margin: 0 0 1rem;
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  font-weight: 500;
  color: #a3a3a3;
}

.description {
  margin: 0 0 1rem;
  font-size: clamp(0.9375rem, 2vw, 1rem);
  color: #a3a3a3;
  line-height: 1.7;
}

.description--lead {
  margin-bottom: 2.5rem;
  padding-left: 1rem;
  border-left: 2px solid #525252;
  color: #b8b8b8;
}

/* Contact */
.contact {
  margin-top: 2rem;
}

.contact-heading {
  margin: 0 0 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #737373;
}

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

.contact-list li {
  margin-bottom: 0.5rem;
}

.contact-link {
  color: #d4d4d4;
  text-decoration: none;
  font-size: clamp(0.9375rem, 2vw, 1rem);
  transition: color 0.2s ease;
}

.contact-link:hover {
  color: #fafafa;
}

.contact-link:focus {
  outline: 2px solid #525252;
  outline-offset: 2px;
}

/* Footer */
.footer {
  padding: clamp(1rem, 3vw, 1.5rem) clamp(1.5rem, 5vw, 3rem);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer p {
  margin: 0;
  font-size: 0.8125rem;
  color: #525252;
}

@media (min-width: 640px) {
  .contact-list {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  .contact-list li {
    margin-bottom: 0;
  }
}