:root {
  --bg: #0F1419;
  --surface: #15202B;
  --surface-alt: #1E2732;
  --border: #38444D;
  --text: #FFFFFF;
  --text-2: #8899A6;
  --accent: #26C6B9;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}
.card {
  width: 100%;
  max-width: 560px;
  padding: clamp(28px, 6vw, 48px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
}
h1 {
  margin: 0;
  font-size: clamp(2.5rem, 10vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
h1 span { color: var(--accent); }
.tagline {
  margin: 8px 0 0;
  font-size: 1.125rem;
  color: var(--text-2);
}
.contact {
  margin: 28px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--text); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
footer {
  padding: 16px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-2);
}
footer p { margin: 0; }