/* 墨香小筑 · 古典水墨风格 */
@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=Noto+Serif+SC:wght@400;600;700&display=swap');

:root {
  --paper: #f6f1e3;
  --paper-deep: #efe7d2;
  --ink: #2e2a24;
  --ink-light: #6b6257;
  --cinnabar: #a93226;
  --cinnabar-light: #c0392b;
  --line: #d8cdb2;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Noto Serif SC', serif;
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(120,100,70,.04), transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(120,100,70,.05), transparent 50%);
  color: var(--ink);
  line-height: 2;
  font-size: 17px;
  min-height: 100vh;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }

/* ---------- 页眉 ---------- */
header.site {
  text-align: center;
  padding: 56px 0 8px;
  position: relative;
}
.seal {
  display: inline-block;
  font-family: 'Ma Shan Zheng', cursive;
  background: var(--cinnabar);
  color: var(--paper);
  font-size: 22px;
  width: 52px; height: 52px;
  line-height: 52px;
  border-radius: 6px;
  transform: rotate(-4deg);
  box-shadow: 2px 3px 8px rgba(0,0,0,.25);
  margin-bottom: 18px;
  user-select: none;
}
.site-title {
  font-family: 'Ma Shan Zheng', cursive;
  font-size: 54px;
  letter-spacing: 12px;
  text-indent: 12px;
  font-weight: 400;
}
.site-sub {
  color: var(--ink-light);
  font-size: 15px;
  letter-spacing: 6px;
  text-indent: 6px;
  margin-top: 6px;
}

/* 双线分隔（回纹意） */
.rule {
  border: none;
  border-top: 1px solid var(--line);
  position: relative;
  margin: 28px 0;
}
.rule::after {
  content: '';
  display: block;
  border-top: 3px double var(--line);
  margin-top: 3px;
}

nav.main { text-align: center; font-size: 16px; letter-spacing: 8px; text-indent: 8px; }
nav.main a {
  color: var(--ink);
  text-decoration: none;
  margin: 0 18px;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
nav.main a:hover, nav.main a.active {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 文章列表 ---------- */
.post-list { list-style: none; margin-top: 12px; }
.post-list li {
  padding: 26px 6px;
  border-bottom: 1px dashed var(--line);
}
.post-list li:last-child { border-bottom: none; }
.post-date {
  font-size: 13px;
  color: var(--ink-light);
  letter-spacing: 3px;
}
.post-title {
  font-size: 24px;
  font-weight: 700;
  margin: 6px 0 8px;
  letter-spacing: 2px;
}
.post-title a { color: var(--ink); text-decoration: none; }
.post-title a:hover { color: var(--cinnabar); }
.post-excerpt { color: var(--ink-light); font-size: 15px; line-height: 1.9; }

/* ---------- 文章页 ---------- */
article.post { padding: 12px 0 8px; }
article.post h1 {
  font-family: 'Ma Shan Zheng', cursive;
  font-weight: 400;
  font-size: 38px;
  letter-spacing: 6px;
  text-align: center;
  margin-bottom: 8px;
}
.post-meta {
  text-align: center;
  color: var(--ink-light);
  font-size: 14px;
  letter-spacing: 3px;
  margin-bottom: 30px;
}
.post-body p { margin-bottom: 1.6em; text-align: justify; }
/* 首字下沉 */
.post-body > p:first-of-type::first-letter {
  font-family: 'Ma Shan Zheng', cursive;
  font-size: 3.2em;
  float: left;
  line-height: 1;
  padding: 6px 10px 0 0;
  color: var(--cinnabar);
}
.post-end {
  text-align: center;
  color: var(--cinnabar);
  font-size: 20px;
  letter-spacing: 12px;
  text-indent: 12px;
  margin: 36px 0 8px;
}
.back { text-align: center; margin: 24px 0; }
.back a {
  color: var(--ink-light);
  text-decoration: none;
  letter-spacing: 4px;
  font-size: 15px;
  border: 1px solid var(--line);
  padding: 8px 28px;
  border-radius: 2px;
}
.back a:hover { color: var(--cinnabar); border-color: var(--cinnabar); }

/* ---------- 关于页 ---------- */
.about-card {
  background: rgba(255,255,255,.35);
  border: 1px solid var(--line);
  padding: 36px 34px;
  margin: 12px 0 30px;
}
.about-card p { margin-bottom: 1.4em; text-align: justify; }

/* ---------- 页脚 ---------- */
footer.site {
  text-align: center;
  color: var(--ink-light);
  font-size: 13px;
  letter-spacing: 3px;
  padding: 10px 0 48px;
}

/* ---------- 移动端 ---------- */
@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-title { font-size: 40px; letter-spacing: 8px; text-indent: 8px; }
  article.post h1 { font-size: 30px; }
  .post-title { font-size: 21px; }
}