@font-face {
  font-family: "DM Sans";
  src: url("dm-sans.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "Forum";
  src: url("forum.woff2") format("woff2");
  font-display: swap;
}

:root {
  --accent: #009fe3;
  --text: #3a3a3a;
  --muted: #8b8b8b;
  --surface: #f7f7f7;
  --border: #eaeaea;
  --bg: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.65 "DM Sans", system-ui, sans-serif;
}

header {
  border-bottom: 3px solid var(--accent);
  background: var(--bg);
}
header .inner {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 880px;
  margin: 0 auto;
  padding: 16px;
}
header img { width: 72px; height: 72px; }
header a { color: inherit; text-decoration: none; }
header .brand { font-family: "Forum", serif; font-size: 28px; color: #000; }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

h1, h2 { font-family: "Forum", serif; font-weight: 400; color: #000; }
h1 { font-size: 40px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 26px; margin: 40px 0 8px; padding-left: 12px; border-left: 4px solid var(--accent); }

a { color: var(--accent); }
.lead { font-size: 19px; }
.muted { color: var(--muted); font-size: 15px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px 24px;
  margin: 24px 0;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 10px 22px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 700;
}

footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}
footer .inner { max-width: 880px; margin: 0 auto; padding: 20px 16px; }
footer a { color: var(--muted); }

@media (max-width: 600px) {
  h1 { font-size: 32px; }
  header img { width: 56px; height: 56px; }
  header .brand { font-size: 22px; }
}