:root { --ink: #12223a; --sub: #44546a; --muted: #8a94a3; --hair: #e6e9ee; --accent: #c62828; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif; color: var(--ink); line-height: 1.85; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { border-bottom: 1px solid var(--hair); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-weight: 800; font-size: 18px; letter-spacing: 1px; }
.back { font-size: 14px; color: var(--sub); }
article { padding: 44px 20px 56px; }
article h1 { font-size: 28px; line-height: 1.4; margin-bottom: 8px; }
article .d { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
article h2 { font-size: 19px; margin: 30px 0 10px; padding-left: 10px; border-left: 3px solid var(--accent); }
article p { font-size: 16px; color: #2b2b2b; margin-bottom: 14px; }
footer { border-top: 1px solid var(--hair); padding: 26px 0 32px; font-size: 13px; color: var(--muted); text-align: center; }