:root { --bg: #f4fbfb; --fg: #12303a; --muted: #4c6b74; --card: #ffffff; --accent: #0f8a8c; --line: #d6ecec; }
@media (prefers-color-scheme: dark) { :root { --bg: #0b1f26; --fg: #e3f4f4; --muted: #9ec0c6; --card: #12303a; --accent: #4fd1c5; --line: #1f4651; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { text-align: center; margin-bottom: 24px; }
header img.logo { width: min(320px, 80%); height: auto; }
h1 { font-size: 1.6rem; margin: 8px 0 4px; }
h2 { font-size: 1.15rem; margin-top: 28px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; margin: 18px 0; }
.muted { color: var(--muted); font-size: .92rem; }
a { color: var(--accent); }
nav { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.icon { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 8px 24px rgba(0,0,0,.18); }
hr { border: 0; border-top: 1px solid var(--line); margin: 36px 0; }