:root { --bg: #FBF7F2; --text: #1D1A17; --muted: #6F6760; --accent: #F0542D; --border: #ECE4DA; }
@media (prefers-color-scheme: dark) { :root { --bg: #141110; --text: #F5F0EB; --muted: #B8AFA7; --accent: #FF6A45; --border: #302A27; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 72px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
.mark { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, #FF7A4D, #F0542D 55%, #D93A4A); flex: none; }
h1 { font-size: 28px; margin: 0; line-height: 1.2; }
h2 { font-size: 20px; margin: 32px 0 8px; }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--accent); }
.card { border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
nav a { margin-right: 16px; font-size: 15px; }
hr { border: 0; border-top: 1px solid var(--border); margin: 40px 0; }