:root {
  --bg: #07101f;
  --surface: #10213a;
  --surface-alt: #172a41;
  --text: #f7f9ff;
  --muted: #a4b0c0;
  --accent: #49c5b6;
  --accent-dark: #35a896;
  --shadow: rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, rgba(73, 197, 182, 0.18), transparent 30%), linear-gradient(180deg, #08101f 0%, #0c1729 100%);
  color: var(--text);
}

img {
  max-width: 100%;
}

.site-header {
  padding: 4rem 1.5rem 2rem;
  text-align: center;
}

.hero {
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.75rem, 5vw, 4.5rem);
  line-height: 0.95;
}

.hero p {
  margin: 1.25rem auto 2rem;
  max-width: 32rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.85rem;
  background: var(--accent);
  color: #07101f;
  font-weight: 700;
  text-decoration: none;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.button:hover,
.brand-link:hover {
  transform: translateY(-1px);
  background: var(--accent-dark);
}

.section {
  padding: 4rem 1.5rem;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 2rem;
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.75rem);
}

.section-heading p {
  margin: 1rem auto 0;
  color: var(--muted);
  line-height: 1.8;
  max-width: 36rem;
}

.brand-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  max-width: 1100px;
  margin: 0 auto;
}

.brand-card {
  padding: 2rem;
  background: rgba(15, 26, 44, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  box-shadow: 0 24px 65px var(--shadow);
}

.brand-card h3 {
  margin-top: 0;
  font-size: 1.35rem;
}

.brand-card p {
  color: var(--muted);
  line-height: 1.8;
}

.brand-link {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.contact-form {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.75rem;
  color: var(--text);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(73, 197, 182, 0.35);
}

.form-feedback {
  margin: 0;
  min-height: 1.5rem;
  color: var(--accent);
}

.site-footer {
  padding: 2rem 1.5rem 3rem;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  .site-header,
  .section {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}