:root {
  color-scheme: light dark;
  --bg: #f7f4ef;
  --surface: #ffffff;
  --text: #1f1a17;
  --muted: #6b625c;
  --accent: #8b3a2f;
  --accent-soft: #f0e2de;
  --border: #e4ddd4;
  --code-bg: #2b2b2b;
  --code-text: #f4f1ec;
  --shadow: 0 12px 40px rgba(31, 26, 23, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141210;
    --surface: #1d1a18;
    --text: #f2ebe4;
    --muted: #b0a59c;
    --accent: #e08a7d;
    --accent-soft: #3a2622;
    --border: #342f2b;
    --code-bg: #0f0e0d;
    --code-text: #f2ebe4;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 17px;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
}

.site-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

.toc {
  position: sticky;
  top: 4.5rem;
  max-height: calc(100vh - 5.5rem);
  overflow: auto;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.toc h2 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc li {
  margin: 0.35rem 0;
}

.toc a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  display: block;
  padding: 0.15rem 0;
}

.toc a:hover,
.toc a.active {
  color: var(--accent);
}

.toc .toc-h3 {
  padding-left: 0.9rem;
  font-size: 0.86rem;
  color: var(--muted);
}

.article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 2.5rem 2.75rem;
}

.article h1 {
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 1rem;
}

.article h2 {
  margin: 2.5rem 0 1rem;
  padding-top: 0.5rem;
  font-size: 1.45rem;
  border-top: 1px solid var(--border);
}

.article h2:first-of-type {
  border-top: none;
  margin-top: 1.5rem;
}

.article h3 {
  margin: 1.75rem 0 0.75rem;
  font-size: 1.15rem;
}

.article p,
.article li,
.article dd {
  margin: 0.9rem 0;
}

.article blockquote {
  margin: 1.25rem 0;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 10px 10px 0;
  color: var(--muted);
}

.article ul,
.article ol {
  padding-left: 1.4rem;
}

.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.95rem;
  display: block;
  overflow-x: auto;
}

.article th,
.article td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
  white-space: nowrap;
}

.article th {
  background: var(--accent-soft);
}

.article pre {
  margin: 1.25rem 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  border-radius: 12px;
  background: var(--code-bg);
  color: var(--code-text);
  font-size: 0.9rem;
  line-height: 1.55;
}

.article code {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
}

.article :not(pre) > code {
  background: var(--accent-soft);
  color: var(--text);
  padding: 0.12rem 0.35rem;
  border-radius: 6px;
}

.article hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.footnotes {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
  color: var(--muted);
}

.footnotes ol {
  padding-left: 1.2rem;
}

.site-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.article img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
    padding-top: 1.25rem;
  }

  .toc {
    position: static;
    max-height: none;
  }

  .article {
    padding: 1.5rem 1.25rem;
  }

  .article h1 {
    font-size: 1.65rem;
  }
}

.divination-widget {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.divination-widget label {
  font-weight: 600;
}

.divination-widget input[type="number"] {
  margin-left: 0.5rem;
  width: 4rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.divination-note {
  color: var(--muted);
  font-size: 0.95rem;
}

#divination-grid {
  margin-top: 1rem;
  position: relative;
}

.divination-box {
  display: none;
  background: color-mix(in srgb, var(--accent) 35%, var(--surface));
  border: 2px solid var(--accent);
  border-radius: 4px;
  opacity: 0.85;
  z-index: 1;
}

.divination-label {
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 9pt;
  font-weight: 700;
  color: var(--text);
  text-shadow: 0 0 1px var(--surface), 0 0 2px var(--surface);
  z-index: 2;
  pointer-events: none;
}

.chart-details {
  margin: 1rem 0 1.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 92%, var(--bg));
  overflow: hidden;
}

.chart-details > summary {
  cursor: pointer;
  padding: 0.75rem 1rem;
  font-weight: 700;
  background: color-mix(in srgb, var(--accent-soft) 65%, transparent);
}

.chart-details > summary:hover {
  background: color-mix(in srgb, var(--accent-soft) 85%, transparent);
}

.chart-details[open] > summary {
  border-bottom: 1px solid var(--border);
}

.chart-details > :not(summary) {
  padding: 0.75rem 1rem 1rem;
}

.chart-details h4 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.05rem;
}

.chart-details h5 {
  margin: 1rem 0 0.35rem;
  font-size: 0.98rem;
  color: var(--muted);
}

.chart-details table {
  margin: 0.35rem 0 0.75rem;
}

.barchartlgnd.zh {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  margin: 0.5rem 0 0.65rem;
  font-size: 0.95rem;
}

.barchartlgnd.zh > div {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.barchartlgnd.zh .bc0,
.barchartlgnd.zh .bc1,
.barchartlgnd.zh .bc2,
.barchartlgnd.zh .bc3,
.barchartlgnd.zh .bc4,
.barchartlgnd.zh .bc5,
.barchartlgnd.zh .bc6 {
  width: 1rem;
  height: 1rem;
  border-radius: 3px;
}

.barchartlgnd.zh .bc0 { background: #8d9299; }
.barchartlgnd.zh .bc1 { background: #4a8fd4; }
.barchartlgnd.zh .bc2 { background: #f0c040; }
.barchartlgnd.zh .bc3 { background: #5b8fd4; }
.barchartlgnd.zh .bc4 { background: #6ab04a; }
.barchartlgnd.zh .bc5 { background: #c47a5a; }
.barchartlgnd.zh .bc6 { background: #9b7ed9; }

.barchart.zh {
  display: grid;
  grid-template-columns: minmax(150px, 240px) 1fr;
  gap: 0.4rem 0.75rem;
  align-items: center;
  margin: 0.75rem 0 1rem;
}

.barchart.zh .key {
  font-size: 0.96rem;
}

.barchart.zh .bar {
  min-height: 1.5rem;
  display: flex;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-radius: 5px;
  overflow: hidden;
}

.barchart.zh .bar > div {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.65rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}

.barchart.zh .bc0 { background: #8d9299; }
.barchart.zh .bc1 { background: #4a8fd4; }
.barchart.zh .bc2 { background: #f0c040; color: #1f1f1f; }
.barchart.zh .bc3 { background: #5b8fd4; }
.barchart.zh .bc4 { background: #6ab04a; }
.barchart.zh .bc5 { background: #c47a5a; }
.barchart.zh .bc6 { background: #9b7ed9; }

.barchartlgnd.zh.junk {
  flex-wrap: wrap;
}

.barchartlgnd.zh.junk .bc0,
.barchartlgnd.zh.junk .bc1,
.barchartlgnd.zh.junk .bc2,
.barchartlgnd.zh.junk .bc3,
.barchartlgnd.zh.junk .bc4,
.barchartlgnd.zh.junk .bc5,
.barchartlgnd.zh.junk .bc6,
.barchartlgnd.zh.junk .bc7,
.barchartlgnd.zh.junk .bc8,
.barchartlgnd.zh.junk .bc9 {
  width: 1rem;
  height: 1rem;
  border-radius: 3px;
}

.barchart.zh.junk .bc0 { background: #4e79a7; }
.barchart.zh.junk .bc1 { background: #f28e2b; }
.barchart.zh.junk .bc2 { background: #59a14f; }
.barchart.zh.junk .bc3 { background: #e15759; }
.barchart.zh.junk .bc4 { background: #b07aa1; }
.barchart.zh.junk .bc5 { background: #9c755f; }
.barchart.zh.junk .bc6 { background: #edc948; color: #1f1f1f; }
.barchart.zh.junk .bc7 { background: #bab0ac; color: #1f1f1f; }
.barchart.zh.junk .bc8 { background: #76b7b2; }
.barchart.zh.junk .bc9 { background: #af7aa1; }

.barchartlgnd.zh.junk .bc0 { background: #4e79a7; }
.barchartlgnd.zh.junk .bc1 { background: #f28e2b; }
.barchartlgnd.zh.junk .bc2 { background: #59a14f; }
.barchartlgnd.zh.junk .bc3 { background: #e15759; }
.barchartlgnd.zh.junk .bc4 { background: #b07aa1; }
.barchartlgnd.zh.junk .bc5 { background: #9c755f; }
.barchartlgnd.zh.junk .bc6 { background: #edc948; }
.barchartlgnd.zh.junk .bc7 { background: #bab0ac; }
.barchartlgnd.zh.junk .bc8 { background: #76b7b2; }
.barchartlgnd.zh.junk .bc9 { background: #af7aa1; }

.barchart.zh.junk-conditioned .bar {
  overflow: visible;
}

.barchart.zh.junk-conditioned .bar > div {
  min-width: 0;
  position: relative;
  padding: 0 0.15rem;
}

.barchart.zh.junk-conditioned .bar > div.hover > span {
  display: none;
  pointer-events: none;
  white-space: nowrap;
  text-shadow: 0 0 1px #000, 0 0 2px #000;
}

.barchart.zh.junk-conditioned .bar > div.hover:hover {
  box-shadow: inset 0 0 10px 1px rgba(0, 0, 0, 0.35);
  z-index: 2;
}

.barchart.zh.junk-conditioned .bar > div.hover:hover > span {
  display: inline;
  z-index: 99;
}

.barchart.zh.junk-conditioned .bar > div.ral {
  justify-content: flex-end;
}

.barchartlgnd.zh.ouroboros {
  flex-wrap: wrap;
}

.barchartlgnd.zh.ouroboros .bc0,
.barchartlgnd.zh.ouroboros .bc1,
.barchartlgnd.zh.ouroboros .bc2,
.barchartlgnd.zh.ouroboros .bc3 {
  width: 1rem;
  height: 1rem;
  border-radius: 3px;
}

.barchart.zh.ouroboros .bc0 { background: #4e79a7; }
.barchart.zh.ouroboros .bc1 { background: #f28e2b; }
.barchart.zh.ouroboros .bc2 { background: #59a14f; }
.barchart.zh.ouroboros .bc3 { background: #e15759; }

.barchartlgnd.zh.ouroboros .bc0 { background: #4e79a7; }
.barchartlgnd.zh.ouroboros .bc1 { background: #f28e2b; }
.barchartlgnd.zh.ouroboros .bc2 { background: #59a14f; }
.barchartlgnd.zh.ouroboros .bc3 { background: #e15759; }

.barchartbtns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.5rem 0 0.75rem;
}

.barchartbtns button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 0.92rem;
}

.barchartbtns button:hover {
  border-color: var(--accent);
}

.barchartbtns button.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  font-weight: 700;
}

.chart-details .barchart {
  display: grid;
  grid-template-columns: minmax(150px, 240px) 1fr;
  gap: 0.4rem 0.75rem;
  align-items: center;
  margin: 0.25rem 0 1.25rem;
}

.chart-details .barchart .key {
  font-size: 0.96rem;
}

.chart-details .barchart .key.phantom {
  display: none;
}

.chart-details .barchart .bar {
  min-height: 1.5rem;
  display: flex;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-radius: 5px;
  overflow: hidden;
}

.chart-details .barchart .bar > div {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  padding-left: 0.45rem;
  min-width: 2.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}

.chart-details .barchart .bc0 {
  background: #7d79cb;
}