*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: #444;
  background: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */

header {
  background: #fff;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.logo-link {
  display: inline-flex;
  align-items: center;
}

.logo {
  height: 70px;
  width: auto;
}

nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  text-decoration: none;
  color: #333;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 18px;
  transition: color 0.15s;
}

.nav-link:hover:not(.active) {
  color: #e05030;
}

.nav-link.active {
  background-color: #e05030;
  color: #fff;
}

.header-rule {
  border-top: 1px solid #ddd;
}

/* ── Main content ── */

main {
  flex: 1;
}

.content {
  max-width: 900px;
  margin: 60px auto;
  padding: 0 40px;
  line-height: 1.85;
  font-size: 17px;
}

.content p {
  margin-bottom: 1.2em;
}

.content h1,
.content h2,
.content h3,
.content h4 {
  color: #222;
  margin-top: 1.8em;
  margin-bottom: 0.6em;
  line-height: 1.3;
}

.content h1 { font-size: 1.8em; }
.content h2 { font-size: 1.4em; }
.content h3 { font-size: 1.15em; }

.content a {
  color: #e05030;
  text-decoration: none;
}

.content a:hover {
  text-decoration: underline;
}

.content blockquote {
  border-left: 3px solid #ddd;
  padding-left: 1.2em;
  color: #666;
  margin: 1em 0;
}

.content em {
  font-style: italic;
}

/* ── Contact form ── */

.contact-form {
  max-width: 560px;
}

.contact-form p {
  margin-bottom: 1.6em;
}

.form-group {
  margin-bottom: 1.2em;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #555;
}

.form-group input,
.form-group textarea {
  border: 1px solid #ccc;
  border-radius: 3px;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  color: #333;
  transition: border-color 0.15s;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #e05030;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.btn-submit {
  background-color: #e05030;
  color: #fff;
  border: none;
  padding: 11px 28px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: background-color 0.15s;
}

.btn-submit:hover {
  background-color: #c8432a;
}

/* ── Footer ── */

footer {
  background: #232323;
  color: #777;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 50px 40px;
  font-size: 13px;
}

.footer-inner strong {
  color: #999;
}

/* ── Responsive ── */

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
  }

  nav {
    flex-wrap: wrap;
  }

  .content {
    margin: 40px auto;
    padding: 0 24px;
    font-size: 16px;
  }

  .footer-inner {
    padding: 36px 24px;
  }
}