:root {
  --ink: #1b2430;
  --muted: #5b6672;
  --paper: #fbfaf7;
  --card: #ffffff;
  --line: #e4e1da;
  --accent: #2b5f7c;
  --accent-ink: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #eef1f4;
    --muted: #a7b0ba;
    --paper: #131a21;
    --card: #1b242d;
    --line: #2b3640;
    --accent: #7fb6d3;
    --accent-ink: #0f1a22;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 880px; margin: 0 auto; padding: 20px 16px;
}
.brand { font-weight: 700; font-size: 1.25rem; letter-spacing: 0.02em; color: var(--ink); text-decoration: none; }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
main { max-width: 880px; margin: 0 auto; padding: 0 16px 48px; }
.hero { padding: 48px 0 24px; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); line-height: 1.15; margin: 0 0 16px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 620px; margin: 0; }
h2 { font-size: 1.35rem; margin: 40px 0 16px; }
.apps { display: block; }
.app {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 22px 8px; margin: 0 0 16px;
}
.app h3 { margin: 0 0 4px; font-size: 1.25rem; }
.tag { margin: 0 0 12px; color: var(--muted); }
.more { font-weight: 600; text-decoration: none; }
.contact p { margin: 8px 0; }
footer {
  border-top: 1px solid var(--line);
  color: var(--muted); font-size: 0.9rem;
  max-width: 880px; margin: 0 auto; padding: 24px 16px 40px;
}
footer p { margin: 6px 0; }
@media (max-width: 480px) {
  .top { flex-direction: column; align-items: flex-start; }
  nav a { margin: 0 18px 0 0; }
}