:root {
  color-scheme: dark;
  --accent: #ffb72b;
  --background: #090a0d;
  --surface: #181a20;
  --text: #f7f7f8;
  --secondary: #b2b4bb;
  --line: #30323a;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
}

* { box-sizing: border-box; }

body {
  background: var(--background);
  color: var(--text);
  margin: 0 auto;
  max-width: 840px;
  padding: 28px clamp(20px, 5vw, 52px) 48px;
  font-size: 17px;
  line-height: 1.65;
}

.site-header,
footer {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
}

.brand {
  align-items: center;
  color: var(--text);
  display: flex;
  gap: 14px;
  text-decoration: none;
}

.brand img { border-radius: 15px; }
.brand strong { display: block; font-size: 20px; }
.brand small { color: var(--secondary); display: block; }

nav { display: flex; gap: 18px; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }

main {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  margin: 36px 0;
  padding: clamp(24px, 5vw, 48px);
}

h1 { font-size: clamp(32px, 7vw, 48px); line-height: 1.1; margin-top: 0; }
h2 { font-size: 24px; line-height: 1.25; margin-top: 40px; }
p, li { color: var(--secondary); }
strong { color: var(--text); }

footer {
  color: var(--secondary);
  font-size: 14px;
}

@media (max-width: 620px) {
  .site-header, footer { align-items: flex-start; flex-direction: column; }
  main { border-radius: 18px; }
}

@media (prefers-reduced-motion: no-preference) {
  a { transition: color 120ms ease; }
}