:root {
  --cream: #f7f5ee;
  --paper: #fbfaf4;
  --olive: #7a8b5f;
  --olive-deep: #5e6c46;
  --ink: #2c2a24;
  --muted: #8d9182;
  --line: #dde1d0;
  --serif: 'Songti SC', 'STSong', 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
  --sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --mono: 'SFMono-Regular', Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: var(--cream); }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.mono { font-family: var(--mono); letter-spacing: 0.08em; }

/* 报头 */
.masthead { border-bottom: 1px solid var(--line); }
.masthead-inner {
  max-width: 1120px; margin: 0 auto; padding: 22px 28px;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 20px;
}
.brand b { display: block; font-family: var(--serif); font-size: 22px; letter-spacing: 0.02em; }
.brand span { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.3em; color: var(--olive); }
.nav { display: flex; gap: 22px; font-size: 13.5px; color: var(--muted); }
.nav a:hover { color: var(--olive-deep); }

/* 版心 */
.page { max-width: 1120px; margin: 0 auto; padding: 56px 28px 80px; }

/* 首页 hero */
.hero { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; padding-bottom: 56px; border-bottom: 1px solid var(--line); }
.hero .kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.3em; color: var(--olive); margin-bottom: 18px; }
.hero h1 { font-family: var(--serif); font-weight: 500; font-size: 54px; line-height: 1.22; margin: 0 0 18px; letter-spacing: 0.01em; }
.hero p { color: #5f6259; font-size: 17px; max-width: 34em; margin: 0; }
.hero .meta { margin-top: 26px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; color: var(--muted); }
.hero-figure { position: relative; }
.hero-figure img { border: 1px solid var(--line); }
.hero-figure figcaption { margin-top: 10px; font-size: 12px; color: var(--muted); }

/* 文章列表 */
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin: 54px 0 8px; }
.section-head h2 { font-family: var(--serif); font-weight: 500; font-size: 26px; margin: 0; }
.section-head span { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.22em; color: var(--muted); }
.post-item { display: grid; grid-template-columns: 92px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.post-item .date { font-family: var(--mono); font-size: 11.5px; color: var(--muted); padding-top: 6px; }
.post-item h3 { font-family: var(--serif); font-weight: 500; font-size: 24px; margin: 0 0 8px; }
.post-item p { margin: 0; color: #6a6d62; font-size: 15px; }
.post-item .tags { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--olive-deep); border: 1px solid rgba(122,139,95,0.35); border-radius: 999px; padding: 2px 9px; background: rgba(122,139,95,0.07); }
.post-item:hover h3 { color: var(--olive-deep); }

/* 文章页 */
.article { max-width: 720px; margin: 0 auto; }
.article .kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.26em; color: var(--olive); }
.article h1 { font-family: var(--serif); font-weight: 500; font-size: 42px; line-height: 1.28; margin: 14px 0 10px; }
.article .meta { font-family: var(--mono); font-size: 11.5px; color: var(--muted); letter-spacing: 0.1em; margin-bottom: 34px; }
.prose h2 { font-family: var(--serif); font-weight: 500; font-size: 26px; margin: 42px 0 12px; }
.prose h3 { font-family: var(--serif); font-weight: 500; font-size: 21px; margin: 30px 0 10px; }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 18px; }
.prose li { margin: 6px 0; }
.prose blockquote { margin: 26px 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--olive); color: #5f6259; font-family: var(--serif); font-size: 18px; }
.prose code { font-family: var(--mono); font-size: 0.9em; background: rgba(122,139,95,0.1); padding: 1px 5px; border-radius: 4px; }
.prose pre { background: #2c2a24; color: #f2efe4; padding: 18px; border-radius: 10px; overflow-x: auto; font-size: 13px; }
.prose img { border: 1px solid var(--line); margin: 22px 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 34px 0; }

/* 关于页 */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-grid h1 { font-family: var(--serif); font-weight: 500; font-size: 40px; margin: 0 0 16px; }
.about-grid p { color: #5f6259; }
.about-facts { margin: 26px 0 0; padding: 0; list-style: none; }
.about-facts li { padding: 10px 0; border-top: 1px solid var(--line); display: flex; gap: 14px; font-size: 14.5px; }
.about-facts b { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; color: var(--olive); min-width: 86px; padding-top: 3px; }

/* 页脚 */
.colophon { border-top: 1px solid var(--line); }
.colophon-inner { max-width: 1120px; margin: 0 auto; padding: 20px 28px; display: flex; justify-content: space-between; gap: 16px; font-size: 12px; color: var(--muted); }
.colophon .mono { font-size: 9.5px; letter-spacing: 0.22em; }

@media (max-width: 860px) {
  .page { padding: 34px 20px 60px; }
  .masthead-inner { padding: 16px 20px; }
  .hero { grid-template-columns: 1fr; gap: 28px; padding-bottom: 36px; }
  .hero h1 { font-size: 38px; }
  .hero p { font-size: 16px; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .article h1 { font-size: 32px; }
  .post-item { grid-template-columns: 1fr; gap: 6px; }
  .post-item .date { padding-top: 0; }
  .colophon-inner { flex-direction: column; }
}

.icp { color: var(--olive-deep); border-bottom: 1px solid rgba(122,139,95,0.4); }
.icp:hover { color: var(--ink); }