/*
 * Publication theme for 《从企业数据到 AI Ready》
 * Visual direction: restrained Chinese parchment, scholarly rather than theatrical.
 */

:root {
  --parchment-canvas: #c9b18b;
  --parchment-deep: #ad8f62;
  --paper: #f5ecd8;
  --paper-light: #fbf5e8;
  --paper-shadow: rgba(71, 43, 24, 0.22);
  --ink: #3b2a1d;
  --ink-soft: #6c5743;
  --cinnabar: #8e2f24;
  --cinnabar-deep: #6f211a;
  --brass: #aa7a3d;
  --hairline: rgba(126, 85, 44, 0.32);
  --serif-cn: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC",
    "STSong", "SimSun", serif;
  --sans-cn: "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei",
    system-ui, sans-serif;
  --bs-body-color: var(--ink);
  --bs-body-bg: var(--parchment-canvas);
  --bs-link-color: var(--cinnabar);
  --bs-link-hover-color: var(--cinnabar-deep);
}

html {
  background: var(--parchment-canvas);
  color-scheme: light;
}

body {
  color: var(--ink);
  font-family: var(--serif-cn);
  font-size: 17px;
  line-height: 1.86;
  letter-spacing: 0.012em;
  background-color: var(--parchment-canvas);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(255, 251, 235, 0.42), transparent 28%),
    radial-gradient(circle at 82% 78%, rgba(102, 64, 31, 0.12), transparent 32%),
    repeating-linear-gradient(
      7deg,
      rgba(101, 67, 35, 0.026) 0,
      rgba(101, 67, 35, 0.026) 1px,
      transparent 1px,
      transparent 7px
    );
}

::selection {
  color: var(--paper-light);
  background: var(--cinnabar);
}

a {
  color: var(--cinnabar);
  text-decoration-color: rgba(142, 47, 36, 0.35);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--cinnabar-deep);
  text-decoration-color: currentColor;
}

/* Full-book navigation */

#quarto-sidebar {
  color: var(--ink);
  background-color: #d5bf9b;
  background-image:
    linear-gradient(90deg, rgba(84, 50, 26, 0.13), transparent 12%, transparent 88%, rgba(84, 50, 26, 0.13)),
    radial-gradient(circle at 25% 8%, rgba(255, 250, 231, 0.5), transparent 34%),
    repeating-linear-gradient(
      0deg,
      rgba(95, 60, 30, 0.022) 0,
      rgba(95, 60, 30, 0.022) 1px,
      transparent 1px,
      transparent 5px
    );
  border-right: 1px solid rgba(95, 59, 30, 0.35);
  box-shadow: 8px 0 26px rgba(67, 40, 21, 0.12);
}

.sidebar-header {
  padding-top: 1.7rem !important;
}

.sidebar-title {
  padding: 0.4rem 0.55rem 1.15rem;
  font-family: var(--serif-cn);
  font-size: 1.36rem;
  font-weight: 700;
  line-height: 1.38;
  text-align: center;
  letter-spacing: 0.045em;
}

.sidebar-title::before {
  display: block;
  width: 4.6rem;
  height: 1px;
  margin: 0 auto 0.8rem;
  content: "";
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
  box-shadow: 0 5px 0 rgba(142, 47, 36, 0.45);
}

.sidebar-title a {
  color: var(--ink);
  text-decoration: none;
}

.sidebar-search {
  margin-bottom: 1rem;
}

.sidebar-search .aa-DetachedSearchButton {
  min-height: 42px;
  color: var(--ink-soft);
  background: rgba(248, 237, 214, 0.64);
  border: 1px solid rgba(109, 70, 35, 0.32);
  border-radius: 7px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.sidebar-navigation {
  font-family: var(--serif-cn);
}

.sidebar-navigation .sidebar-item-container {
  border-radius: 4px;
}

.sidebar-navigation .sidebar-item-text {
  padding-top: 0.21rem;
  padding-bottom: 0.21rem;
  color: #594431;
  font-size: 0.89rem;
  line-height: 1.38;
}

.sidebar-navigation .sidebar-item-section > .sidebar-item-container {
  margin-top: 0.58rem;
  border-top: 1px solid rgba(120, 78, 39, 0.2);
}

.sidebar-navigation .sidebar-item-section > .sidebar-item-container .sidebar-item-text {
  padding-top: 0.58rem;
  color: #432f20;
  font-weight: 700;
  letter-spacing: 0.018em;
}

.sidebar-navigation .sidebar-link.active {
  position: relative;
  color: #fff8e9;
  font-weight: 700;
  background: linear-gradient(90deg, var(--cinnabar-deep), var(--cinnabar));
  border-radius: 5px;
  box-shadow: 0 3px 10px rgba(104, 32, 24, 0.18);
}

.sidebar-navigation .sidebar-link.active::before {
  margin-right: 0.42rem;
  content: "卷";
  font-size: 0.72rem;
  opacity: 0.88;
}

.sidebar-navigation .sidebar-link:hover:not(.active) {
  color: var(--cinnabar-deep);
  background: rgba(255, 248, 230, 0.45);
}

.sidebar-navigation .sidebar-item-toggle {
  color: var(--ink-soft);
}

/* The reading sheet */

#quarto-content {
  min-height: 100vh;
}

main.content {
  position: relative;
  margin-top: 1.4rem;
  margin-bottom: 2.4rem;
  padding: clamp(2.5rem, 4.6vw, 5rem) clamp(2.6rem, 5.2vw, 5.6rem);
  overflow: clip;
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 15% 8%, rgba(255, 255, 250, 0.72), transparent 31%),
    radial-gradient(circle at 92% 88%, rgba(126, 80, 39, 0.08), transparent 27%),
    repeating-linear-gradient(
      91deg,
      rgba(103, 68, 34, 0.018) 0,
      rgba(103, 68, 34, 0.018) 1px,
      transparent 1px,
      transparent 8px
    );
  border: 1px solid rgba(112, 72, 35, 0.32);
  border-radius: 2px;
  box-shadow:
    0 24px 55px var(--paper-shadow),
    0 3px 12px rgba(75, 43, 21, 0.14),
    inset 0 0 52px rgba(122, 78, 38, 0.08);
}

main.content::before,
main.content::after {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  content: "";
}

main.content::before {
  inset: 13px;
  border: 1px solid rgba(171, 120, 57, 0.34);
  box-shadow: inset 0 0 0 3px rgba(255, 249, 232, 0.28);
}

main.content::after {
  top: 27px;
  right: 27px;
  bottom: 27px;
  left: 27px;
  border-top: 1px solid rgba(171, 120, 57, 0.12);
  border-bottom: 1px solid rgba(171, 120, 57, 0.12);
}

main.content > * {
  position: relative;
  z-index: 1;
}

/* Book title and chapter hierarchy */

#title-block-header {
  margin-block: 0 3.8rem;
  padding-bottom: 2.1rem;
  text-align: center;
  border-bottom: 1px solid var(--hairline);
}

#title-block-header::before {
  display: block;
  margin-bottom: 1.15rem;
  color: var(--brass);
  content: "—  ·  ◆  ·  —   数据产品与架构实践白皮书   —  ·  ◆  ·  —";
  font-family: var(--serif-cn);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
}

.quarto-title h1.title {
  max-width: 13em;
  margin: 0 auto;
  color: #322014;
  font-family: var(--serif-cn);
  font-size: clamp(2.25rem, 3.5vw, 3.65rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: 0.045em;
  text-wrap: balance;
}

.quarto-title .subtitle {
  margin: 1rem 0 0;
  color: var(--cinnabar);
  font-family: var(--serif-cn);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.quarto-title-meta {
  display: flex;
  justify-content: center;
  margin-top: 1.2rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.quarto-title-meta-heading {
  display: none;
}

.quarto-title-meta-contents p {
  margin: 0;
}

.quarto-title-meta-contents p::before,
.quarto-title-meta-contents p::after {
  margin-inline: 0.7rem;
  color: var(--brass);
  content: "—";
}

section.level1 > h1 {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 0;
  margin-bottom: 1.55rem;
  color: var(--cinnabar);
  font-family: var(--serif-cn);
  font-size: clamp(1.85rem, 2.8vw, 2.45rem);
  font-weight: 800;
  letter-spacing: 0.09em;
}

section.level1 > h1::before {
  display: inline-grid;
  flex: 0 0 2.55rem;
  width: 2.55rem;
  height: 2.55rem;
  place-items: center;
  color: var(--cinnabar);
  content: "卷";
  font-size: 0.9rem;
  letter-spacing: 0;
  border: 1px solid var(--brass);
  border-radius: 9px 4px 9px 4px;
  box-shadow: inset 0 0 0 3px rgba(170, 122, 61, 0.12);
  transform: rotate(-2deg);
}

section.level1 > h1::after {
  flex: 1;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, var(--brass), rgba(170, 122, 61, 0));
}

h2 {
  margin-top: 2.65rem;
  padding-bottom: 0.52rem;
  color: #4a2d1c;
  font-family: var(--serif-cn);
  font-size: 1.52rem;
  font-weight: 750;
  letter-spacing: 0.055em;
  border-bottom: 1px solid var(--hairline);
}

h2::before {
  margin-right: 0.48rem;
  color: var(--cinnabar);
  content: "◆";
  font-size: 0.54em;
  vertical-align: 0.24em;
}

h3 {
  color: #4f3322;
  font-family: var(--serif-cn);
  font-weight: 700;
}

p {
  margin-bottom: 1.05rem;
  text-align: justify;
  text-justify: inter-ideograph;
}

section.level1 > h1 + p::first-letter {
  float: left;
  margin: 0.06em 0.13em 0 0;
  color: var(--cinnabar);
  font-size: 3.25em;
  font-weight: 800;
  line-height: 0.86;
}

strong {
  color: #3a2518;
  font-weight: 750;
}

blockquote {
  position: relative;
  margin: 1.8rem 0 2rem;
  padding: 1.55rem 1.65rem 1.35rem 2.15rem;
  color: #594432;
  background: rgba(231, 211, 174, 0.38);
  border: 1px solid rgba(159, 103, 49, 0.48);
  border-left: 4px solid var(--cinnabar);
  border-radius: 2px;
  box-shadow: inset 0 0 22px rgba(113, 70, 32, 0.045);
}

blockquote.blockquote,
blockquote.blockquote p {
  color: #594432;
}

blockquote::before {
  position: absolute;
  top: 0.7rem;
  left: 0.55rem;
  color: rgba(142, 47, 36, 0.72);
  content: "“";
  font-family: Georgia, serif;
  font-size: 2rem;
  line-height: 1;
}

blockquote p:last-child {
  margin-bottom: 0;
}

ol,
ul {
  padding-left: 1.55rem;
}

li {
  margin-bottom: 0.34rem;
}

li::marker {
  color: var(--cinnabar);
  font-weight: 700;
}

hr {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
  border: 0;
}

/* Tables, code, diagrams, and callouts */

table {
  width: 100%;
  overflow: hidden;
  color: var(--ink);
  font-family: var(--serif-cn);
  font-size: 0.91rem;
  background: rgba(250, 243, 225, 0.62);
  border: 1px solid var(--hairline);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 3px;
}

table thead {
  color: #fff8e8;
  background: #69412a;
}

table th,
table td {
  padding: 0.7rem 0.82rem;
  border-color: rgba(121, 78, 39, 0.2);
}

table tbody tr:nth-child(even) {
  background: rgba(222, 197, 153, 0.2);
}

pre,
code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

pre {
  background: #e9dcc1;
  border: 1px solid rgba(105, 65, 31, 0.28);
  border-radius: 3px;
}

code:not(pre code) {
  color: #723127;
  background: rgba(159, 103, 49, 0.12);
}

.cell-output-display,
.mermaid {
  padding: 0.8rem;
  background: rgba(255, 251, 239, 0.58);
  border: 1px solid rgba(124, 80, 38, 0.18);
}

.callout {
  color: var(--ink);
  background: rgba(244, 231, 202, 0.74);
  border-color: rgba(119, 77, 38, 0.32);
  border-radius: 3px;
}

/* Margin notes and page navigation */

#quarto-margin-sidebar {
  padding-top: 2.5rem;
  color: var(--ink-soft);
  font-family: var(--serif-cn);
}

#TOC #toc-title {
  margin-bottom: 0.75rem;
  color: #4c3120;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

#TOC #toc-title::after {
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 0.65rem;
  content: "";
  background: linear-gradient(90deg, var(--brass), transparent);
}

#TOC .nav-link {
  padding-block: 0.24rem;
  color: #765e48;
  font-size: 0.82rem;
  border-left-color: rgba(145, 97, 48, 0.28);
}

#TOC .nav-link.active {
  color: var(--cinnabar) !important;
  font-weight: 750;
  border-left-color: var(--cinnabar);
}

.page-navigation {
  margin-top: 4rem;
  padding-top: 1.15rem;
  font-family: var(--serif-cn);
  border-top: 1px solid var(--hairline);
}

.pagination-link {
  min-height: 44px;
  color: var(--cinnabar);
  font-weight: 700;
  letter-spacing: 0.025em;
}

.pagination-link .nav-page-text,
.pagination-link i {
  color: var(--cinnabar);
}

.pagination-link:hover {
  color: var(--cinnabar-deep);
}

.pagination-link i {
  font-size: 1.35rem;
}

/* Search modal */

.aa-DetachedOverlay {
  background: rgba(54, 34, 20, 0.54);
  backdrop-filter: blur(3px);
}

.aa-DetachedContainer {
  color: var(--ink);
  background: var(--paper-light);
  border: 1px solid var(--hairline);
  box-shadow: 0 22px 60px rgba(57, 35, 19, 0.3);
}

.aa-Form {
  border-color: var(--brass);
}

/* Keyboard and accessibility */

a:focus-visible,
button:focus-visible,
input:focus-visible,
.sidebar-link:focus-visible {
  outline: 3px solid rgba(142, 47, 36, 0.55);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Mobile book reader */

@media (max-width: 991.98px) {
  body {
    font-size: 16.5px;
    line-height: 1.8;
    background-color: var(--paper);
  }

  #quarto-header {
    border-bottom: 1px solid rgba(112, 72, 35, 0.32);
    box-shadow: 0 3px 14px rgba(68, 41, 22, 0.12);
  }

  .quarto-secondary-nav {
    min-height: 54px;
    color: var(--ink);
    background:
      linear-gradient(rgba(248, 238, 216, 0.97), rgba(241, 225, 194, 0.97)),
      var(--paper);
  }

  .quarto-secondary-nav .btn {
    min-width: 44px;
    min-height: 44px;
    color: var(--ink);
  }

  .quarto-page-breadcrumbs {
    color: var(--ink-soft);
    font-family: var(--serif-cn);
    font-weight: 700;
  }

  #quarto-sidebar {
    width: min(86vw, 340px);
    max-width: min(86vw, 340px);
  }

  #quarto-sidebar-glass.show {
    background: rgba(54, 34, 20, 0.46);
    backdrop-filter: blur(2px);
  }

  main.content {
    width: 100%;
    margin: 54px 0 0;
    padding: 2.25rem clamp(1.35rem, 6vw, 2rem) 3rem;
    overflow: hidden;
    border: 0;
    border-radius: 0;
    box-shadow: inset 0 0 36px rgba(122, 78, 38, 0.06);
  }

  main.content::before {
    inset: 12px 9px;
  }

  main.content::after {
    top: 23px;
    right: 18px;
    bottom: 23px;
    left: 18px;
  }

  #title-block-header {
    margin-bottom: 2.7rem;
    padding: 0 0.35rem 1.7rem;
  }

  #title-block-header::before {
    margin-bottom: 0.8rem;
    font-size: 0.66rem;
    line-height: 1.65;
    letter-spacing: 0.12em;
  }

  .quarto-title h1.title {
    font-size: clamp(1.95rem, 9.2vw, 2.55rem);
    line-height: 1.32;
    letter-spacing: 0.025em;
  }

  .quarto-title .subtitle {
    font-size: 0.88rem;
    line-height: 1.6;
    letter-spacing: 0.12em;
  }

  section.level1 > h1 {
    gap: 0.62rem;
    font-size: 1.75rem;
  }

  section.level1 > h1::before {
    flex-basis: 2.25rem;
    width: 2.25rem;
    height: 2.25rem;
  }

  h2 {
    font-size: 1.38rem;
  }

  blockquote {
    padding: 1.3rem 1.05rem 1.15rem 1.55rem;
  }

  .table-responsive,
  table {
    max-width: 100%;
  }

  table {
    font-size: 0.84rem;
  }
}

@media (max-width: 420px) {
  main.content {
    padding-inline: 1.25rem;
  }

  p {
    text-align: left;
  }

  #title-block-header::before {
    content: "—  数据产品与架构实践白皮书  —";
  }

  section.level1 > h1::after {
    min-width: 1.4rem;
  }
}