/* wulin-tools docs — 林氏编辑风
   ink / paper / 少量朱砂，字小、留白大、网格严谨 */

:root {
  --paper:    #faf8f4;
  --paper-2:  #f3f0e9;
  --ink:      #23211d;
  --ink-2:    #4a463f;
  --muted:    #8c867b;
  --faint:    #b3ada1;
  --line:     #e4dfd4;
  --line-2:   #eeeae0;
  --accent:   #a63a2a;
  --code-bg:  #f2efe8;

  --serif: "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --sans:  system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --mono:  "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- 布局 ---------- */

.shell {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  gap: 64px;
}

.side {
  position: sticky;
  top: 0;
  align-self: start;
  padding: 56px 0 40px;
  height: 100vh;
}

.brand {
  display: block;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 0;
  margin-bottom: 4px;
}
.brand:hover { border: 0; }

.brand-note {
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: .08em;
  margin-bottom: 36px;
}

.side nav { display: flex; flex-direction: column; gap: 2px; }

.side nav a {
  font-size: 13.5px;
  color: var(--ink-2);
  border: 0;
  padding: 5px 0 5px 13px;
  border-left: 2px solid transparent;
  letter-spacing: .02em;
}
.side nav a:hover { color: var(--accent); }
.side nav a.active {
  color: var(--ink);
  border-left-color: var(--accent);
  font-weight: 600;
}

.side-foot {
  position: absolute;
  bottom: 40px;
  font-size: 11px;
  color: var(--faint);
  letter-spacing: .04em;
  line-height: 1.9;
}
.side-foot a { color: var(--faint); border: 0; }
.side-foot a:hover { color: var(--accent); }

.doc { padding: 56px 0 120px; max-width: 68ch; }

/* ---------- 标题 ---------- */

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1.35;
}

h1 {
  font-size: 27px;
  margin: 0 0 6px;
}

h1 + .lede {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 44px;
  letter-spacing: .02em;
}

h2 {
  font-size: 17px;
  margin: 52px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

h2:first-of-type { margin-top: 0; }

h3 {
  font-size: 14.5px;
  margin: 32px 0 8px;
  color: var(--ink);
}

p { margin: 0 0 16px; color: var(--ink-2); }

strong { color: var(--ink); font-weight: 600; }

hr {
  border: 0;
  border-top: 1px solid var(--line-2);
  margin: 40px 0;
}

/* ---------- 列表 ---------- */

ul, ol { margin: 0 0 16px; padding-left: 20px; color: var(--ink-2); }
li { margin: 4px 0; }
li::marker { color: var(--faint); }

/* ---------- 表格 ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px;
  font-size: 13.5px;
}
th {
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
td {
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--line-2);
  color: var(--ink-2);
  vertical-align: top;
}
td:first-child { color: var(--ink); }
tr:last-child td { border-bottom: 1px solid var(--line); }

code {
  font-family: var(--mono);
  font-size: .86em;
  background: var(--code-bg);
  padding: 1px 5px;
  color: var(--ink);
}

pre {
  background: var(--code-bg);
  border-left: 2px solid var(--accent);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 0 0 24px;
  line-height: 1.7;
}
pre code { background: none; padding: 0; font-size: 12.5px; }

/* ---------- 强调元素 ---------- */

.note {
  border-left: 2px solid var(--accent);
  padding: 2px 0 2px 16px;
  margin: 0 0 24px;
  color: var(--ink-2);
  font-size: 14px;
}
.note strong { color: var(--accent); }

.kv {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .02em;
  margin-bottom: 28px;
}

/* 首页模块索引 */
.index-list { margin: 0; padding: 0; list-style: none; }
.index-list li { border-bottom: 1px solid var(--line-2); margin: 0; }
.index-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 14px 0;
  border: 0;
}
.index-list a:hover .idx-name { color: var(--accent); }
.idx-name { font-family: var(--serif); font-size: 15.5px; color: var(--ink); }
.idx-desc { font-size: 12.5px; color: var(--muted); text-align: right; }

/* ---------- 页脚 ---------- */

.foot {
  margin-top: 72px;
  padding-top: 20px;
  border-top: 1px solid var(--line-2);
  font-size: 11.5px;
  color: var(--faint);
  letter-spacing: .04em;
}

/* ---------- 响应式 ---------- */

@media (max-width: 800px) {
  .shell { grid-template-columns: 1fr; gap: 0; padding: 0 20px; }
  .side {
    position: static;
    height: auto;
    padding: 32px 0 20px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 32px;
  }
  .brand-note { margin-bottom: 20px; }
  .side nav { flex-direction: row; flex-wrap: wrap; gap: 0 18px; }
  .side nav a { border-left: 0; padding: 4px 0; }
  .side nav a.active { border-left: 0; border-bottom: 2px solid var(--accent); }
  .side-foot { position: static; margin-top: 20px; }
  .doc { padding: 8px 0 80px; }
  h1 { font-size: 22px; }
}