:root {
  --paper: #f3efe6;
  --ink: #1c1916;
  --muted: #6d645b;
  --line: #ddd4c6;
  --pine: #1e4a3a;
  --card: #faf7f1;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
a { color: var(--pine); text-decoration-thickness: 1px; }
.top {
  max-width: 740px;
  margin: 0 auto;
  padding: 28px 24px 8px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.brand {
  color: var(--ink);
  font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: 28px;
  text-decoration: none;
  letter-spacing: 0.04em;
}
nav a { margin-left: 16px; color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--pine); }
main { max-width: 740px; margin: 0 auto; padding: 12px 24px 72px; }
article h1, .write h1, .list h1 {
  font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
}
.meta { color: var(--muted); font-size: 14px; }
.list a.item {
  display: block;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}
.list a.item strong { display: block; font-size: 22px; font-family: "Songti SC", "Noto Serif SC", serif; }
.post { font-size: 18px; }
.post h1 { font-size: 36px; margin-bottom: 8px; }
.post h2 { font-size: 24px; margin-top: 1.6em; }
.post pre {
  background: #ebe4d6;
  padding: 14px 16px;
  overflow: auto;
  border-radius: 8px;
}
.post code { font-family: Consolas, "Sarasa Mono SC", monospace; font-size: 0.9em; }
.post blockquote {
  margin: 1.2em 0;
  padding-left: 16px;
  border-left: 3px solid var(--pine);
  color: #3f3832;
}
label { display: block; margin: 16px 0 6px; color: var(--muted); }
input[type=text], input[type=password], textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}
textarea { min-height: 280px; resize: vertical; }
button, .btn {
  display: inline-block;
  margin-top: 16px;
  margin-right: 8px;
  background: var(--pine);
  color: #f6f3ec;
  border: 0;
  border-radius: 999px;
  padding: 8px 18px;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
}
.btn.ghost { background: transparent; color: var(--pine); border: 1px solid var(--pine); }
.err { background: #fde8e4; color: #8a2b1d; padding: 10px 12px; border-radius: 8px; }
.empty { color: var(--muted); padding: 32px 0; }