:root { --bg: #f6f8fc; --card: #ffffff; --text: #1d2433; --muted: #5b6475; --accent: #ff8a2b; --line: #e3e8f0; }
@media (prefers-color-scheme: dark) { :root { --bg: #11151d; --card: #1a202b; --text: #e8ecf3; --muted: #9aa4b5; --accent: #ffa65c; --line: #2a3242; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 -apple-system, "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
header img { width: 72px; height: 72px; border-radius: 16px; }
h1 { font-size: 28px; margin: 0; } h2 { font-size: 20px; margin: 32px 0 8px; } h3 { font-size: 17px; margin: 20px 0 4px; }
.sub { color: var(--muted); margin: 2px 0 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; margin: 16px 0; }
a { color: var(--accent); } ul { padding-left: 1.2em; } li { margin: 4px 0; }
nav { display: flex; gap: 16px; font-size: 15px; margin: 8px 0 0; }
footer { color: var(--muted); font-size: 14px; margin-top: 40px; }