:root {
  --bg: #f7f3ea;
  --bg-soft: #f1ead9;
  --surface: #fffdf8;
  --ink: #2c2620;
  --ink-soft: #4a4339;
  --muted: #8c8273;
  --border: #e4d9c3;
  --rule: #ddd0b8;
  --accent: #b5532f;
  --accent-soft: #f3e3d8;
  --accent-2: #6b8e5a;
  --radius: 10px;
  --maxw: 760px;
  --serif: "Iowan Old Style", "Palatino Linotype", "Songti SC", "Noto Serif SC", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  background-image: radial-gradient(var(--bg-soft) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--rule); }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--rule);
  background: rgba(247, 243, 234, .9);
  backdrop-filter: saturate(140%) blur(4px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 13px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .5px;
  flex: 0 0 auto;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-family: var(--serif); font-size: 18px; letter-spacing: .5px; }
.brand-text small { color: var(--muted); font-size: 12px; letter-spacing: 1px; }

.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  color: var(--ink-soft);
  font-size: 14.5px;
  padding: 6px 13px;
  border-radius: 8px;
}
.nav a:hover { background: var(--accent-soft); text-decoration: none; }
.nav a.active { background: var(--ink); color: var(--bg); }

.search-box input {
  width: 120px;
  max-width: 32vw;
  padding: 7px 4px;
  border: none;
  border-bottom: 1.5px solid var(--rule);
  border-radius: 0;
  font-size: 14px;
  background: transparent;
  color: var(--ink);
  outline: none;
  transition: border-color .2s;
}
.search-box input::placeholder { color: var(--muted); }
.search-box input:focus { border-bottom-color: var(--accent); }

/* ---------- Layout ---------- */
.view { max-width: var(--maxw); margin: 0 auto; padding: 40px 22px 70px; }

/* ---------- Masthead (替代渐变 hero) ---------- */
.masthead { margin-bottom: 34px; }
.masthead h1 {
  font-family: var(--serif);
  font-size: 38px;
  line-height: 1.18;
  margin: 0;
  color: var(--ink);
  letter-spacing: .5px;
}
.masthead .squiggle { display: block; margin: 10px 0 16px; }
.masthead .mast-sub {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  font-size: 17px;
  margin: 0 0 16px;
}
.masthead .intro p {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 15.5px;
  max-width: 62ch;
}
.masthead .sign {
  font-family: var(--serif);
  font-style: italic;
  color: var(--muted);
  font-size: 14px;
  margin-top: 8px;
}

/* ---------- Filter row ---------- */
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0 0 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
.chip {
  cursor: pointer;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  padding: 4px 13px;
  border-radius: 999px;
  transition: all .15s;
  user-select: none;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.section-title {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink-soft);
  margin: 0 0 8px;
  font-weight: 600;
}

/* ---------- Editorial list (替代卡片网格) ---------- */
.entry {
  display: grid;
  grid-template-columns: 42px 1fr 20px;
  gap: 14px;
  align-items: start;
  padding: 20px 4px;
  border-top: 1px solid var(--rule);
  cursor: pointer;
  transition: background .15s;
}
.entry:last-of-type { border-bottom: 1px solid var(--rule); }
.entry:hover { background: rgba(243, 227, 216, .35); }
.entry-index {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--muted);
  padding-top: 3px;
  font-variant-numeric: tabular-nums;
}
.entry-main h3 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.35;
  color: var(--ink);
}
.entry:hover .entry-main h3 { color: var(--accent); }
.entry .excerpt { color: var(--ink-soft); font-size: 14.5px; margin: 0 0 10px; }
.entry .entry-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.entry .date { font-size: 12.5px; color: var(--muted); font-family: var(--serif); }
.entry .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.entry .entry-go {
  font-size: 19px;
  color: var(--muted);
  padding-top: 3px;
  transition: transform .15s, color .15s;
}
.entry:hover .entry-go { color: var(--accent); transform: translateX(3px); }

.tag {
  font-size: 11.5px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
}
.tag:hover { background: var(--accent); color: #fff; }
.tag.lang { background: #e9efe4; color: var(--accent-2); }
.tag.lang:hover { background: var(--accent-2); color: #fff; }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 60px 0;
  font-size: 15px;
  font-family: var(--serif);
  font-style: italic;
}

/* ---------- Article detail ---------- */
.back-link { display: inline-block; margin-bottom: 18px; font-size: 14px; color: var(--muted); }
.back-link:hover { color: var(--accent); }
.article-head { margin-bottom: 26px; }
.article-head h1 {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1.3;
  color: var(--ink);
}
.article-head .meta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.article-head .meta .date { font-family: var(--serif); }
.article-head .tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- Markdown prose ---------- */
.prose { font-size: 15.5px; color: var(--ink-soft); }
.prose h1 { font-family: var(--serif); font-size: 27px; margin: 30px 0 12px; color: var(--ink); }
.prose h2 {
  font-family: var(--serif);
  font-size: 21px;
  margin: 30px 0 10px;
  color: var(--ink);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}
.prose h3 { font-family: var(--serif); font-size: 17px; margin: 22px 0 8px; color: var(--ink); }
.prose p { margin: 12px 0; }
.prose ul, .prose ol { margin: 12px 0; padding-left: 24px; }
.prose li { margin: 5px 0; }
.prose blockquote {
  margin: 16px 0;
  padding: 4px 18px;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  font-style: italic;
}
.prose code {
  background: var(--bg-soft);
  padding: 2px 6px;
  border-radius: 5px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13.5px;
  color: var(--accent);
}
.prose pre {
  background: #2c2620;
  border-radius: 10px;
  padding: 14px 16px;
  overflow: auto;
  margin: 16px 0;
}
.prose pre code { background: none; padding: 0; color: #f3e9dc; font-size: 13px; }
.prose table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0;
  font-size: 14px;
}
.prose th, .prose td { border: 1px solid var(--rule); padding: 8px 12px; text-align: left; }
.prose th { background: var(--bg-soft); font-weight: 600; color: var(--ink); }
.prose tr:nth-child(even) td { background: #fcf8ef; }
.prose hr { border: none; border-top: 1px solid var(--rule); margin: 28px 0; }
.prose img { max-width: 100%; border-radius: 10px; }

/* ---------- About ---------- */
.about-wrap { }
.about-wrap .sign {
  font-family: var(--serif);
  font-style: italic;
  color: var(--muted);
  font-size: 15px;
  margin-top: 18px;
  text-align: right;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--rule);
  background: transparent;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  font-family: var(--serif);
  font-style: italic;
  padding: 26px 20px 40px;
}

@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; gap: 10px; }
  .nav { margin-left: 0; order: 3; }
  .search-box { order: 2; margin-left: auto; }
  .search-box input { width: 120px; }
  .masthead h1 { font-size: 30px; }
  .entry { grid-template-columns: 30px 1fr 16px; gap: 10px; }
  .entry-index { font-size: 13px; }
}