/* 青岑一隅 · 样式：纸色底、青山绿点缀、衬线标题，阅读优先 */
:root {
  --paper: #faf7f0;
  --card: #fffdf8;
  --ink: #24211c;
  --muted: #7a7268;
  --faint: #a89e92;
  --line: #e7dfd0;
  --accent: #2f5d3a;
  --accent-soft: #eef3ec;
  --serif: "Songti SC", "Noto Serif SC", "STSong", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* 顶栏 */
.masthead {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 28px 0 20px; border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand a { color: var(--ink); }
.brand a:hover { text-decoration: none; }
.brand .name { font-family: var(--serif); font-size: 26px; font-weight: 700; letter-spacing: 0.12em; }
.brand .tag { font-size: 12px; color: var(--faint); letter-spacing: 0.2em; }
.nav { display: flex; gap: 20px; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover, .nav a.active { color: var(--accent); text-decoration: none; }

/* 山形小标 */
.peaks { display: block; margin: 34px 0 6px; color: var(--accent); opacity: 0.85; }

/* 站点介绍 */
.intro { padding: 10px 0 30px; border-bottom: 1px solid var(--line); }
.intro h1 {
  font-family: var(--serif); font-size: 30px; line-height: 1.5;
  font-weight: 700; margin: 8px 0 12px; letter-spacing: 0.02em;
}
.intro p { color: var(--muted); font-size: 15.5px; line-height: 1.9; margin: 0; max-width: 640px; }

/* 文章列表 */
.section-label {
  font-size: 12px; letter-spacing: 0.3em; color: var(--faint);
  margin: 34px 0 8px;
}
.featured {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 26px 28px; margin: 12px 0 8px; color: var(--ink);
}
.featured:hover { text-decoration: none; border-color: var(--accent); }
.featured .kicker { font-size: 12px; letter-spacing: 0.25em; color: var(--accent); }
.featured h2 { font-family: var(--serif); font-size: 26px; line-height: 1.5; margin: 10px 0 8px; }
.featured p { color: var(--muted); font-size: 15px; line-height: 1.9; margin: 0 0 14px; }
.meta { font-size: 13px; color: var(--faint); }
.meta .dot { margin: 0 8px; }

.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { border-bottom: 1px solid var(--line); padding: 22px 0; }
.post-list li:last-child { border-bottom: none; }
.post-list a.title {
  font-family: var(--serif); font-size: 21px; line-height: 1.55;
  color: var(--ink); font-weight: 700; display: block; margin-bottom: 6px;
}
.post-list a.title:hover { color: var(--accent); text-decoration: none; }
.post-list .excerpt { color: var(--muted); font-size: 14.5px; line-height: 1.85; margin: 0 0 8px; }

/* 文章页 */
.article { padding: 38px 0 20px; }
.article h1 { font-family: var(--serif); font-size: 30px; line-height: 1.5; margin: 0 0 10px; }
.article .meta { margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.article .body { font-size: 17px; line-height: 2; }
.article .body p { margin: 0 0 1.4em; }
.article .body h2 { font-family: var(--serif); font-size: 21px; margin: 1.8em 0 0.8em; }
.article .body blockquote {
  margin: 1.6em 0; padding: 4px 0 4px 18px;
  border-left: 3px solid var(--accent); color: var(--muted);
}
.back { display: inline-block; margin: 26px 0 8px; font-size: 14px; }

/* 关于页 */
.about { padding: 38px 0 20px; }
.about h1 { font-family: var(--serif); font-size: 28px; margin: 0 0 18px; }
.about p { font-size: 16.5px; line-height: 2; color: var(--ink); }
.about p.muted { color: var(--muted); }

/* 页脚 */
.footer {
  margin-top: 44px; padding: 22px 0 40px;
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--faint); text-align: center; line-height: 2;
}

@media (max-width: 600px) {
  .masthead { flex-direction: column; gap: 10px; }
  .brand .name { font-size: 23px; }
  .intro h1, .article h1 { font-size: 25px; }
  .featured { padding: 20px; }
  .featured h2 { font-size: 22px; }
  .post-list a.title { font-size: 19px; }
}