/* 仅供说明书使用，不依赖或覆盖首页与棋桌样式。 */
.manual-page {
  --manual-background: #191a1c;
  --manual-surface: #202123;
  --manual-text: #f0efec;
  --manual-muted: #b9b7b0;
  --manual-gold: #dec99c;
  --manual-line: rgba(222, 201, 156, 0.28);
  --manual-soft-line: rgba(222, 201, 156, 0.14);
  margin: 0;
  background: radial-gradient(ellipse at 84% 0%, rgba(182, 145, 81, 0.09), transparent 42rem),
    var(--manual-background);
  color: var(--manual-text);
  color-scheme: dark;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  -webkit-text-size-adjust: 100%;
}

.manual-page *,
.manual-page *::before,
.manual-page *::after {
  box-sizing: border-box;
}

.manual-page ::selection {
  background: #dec99c;
  color: #191a1c;
}

.manual-page a {
  color: var(--manual-gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

.manual-page a:hover {
  color: #fff1d3;
}

.manual-page :focus-visible {
  outline: 2px solid #f5dca5;
  outline-offset: 5px;
}

.manual-page .manual-skip {
  position: absolute;
  z-index: 2;
  top: 12px;
  left: 12px;
  padding: 10px 18px;
  transform: translateY(-180%);
  border: 1px solid var(--manual-gold);
  background: var(--manual-background);
}

.manual-page .manual-skip:focus {
  transform: translateY(0);
}

.manual-page .manual-header,
.manual-page .manual-layout,
.manual-page .manual-footer {
  width: min(1184px, calc(100% - 80px));
  margin-inline: auto;
}

.manual-page .manual-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 108px;
  border-bottom: 1px solid var(--manual-line);
}

.manual-page .manual-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  min-height: 44px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.manual-page .manual-brand-mark {
  display: grid;
  flex: 0 0 42px;
  place-items: center;
  width: 42px;
  height: 46px;
  border: 1px solid var(--manual-gold);
  border-radius: 2px 10px 2px 2px;
  background: linear-gradient(140deg, rgba(222, 201, 156, 0.09), transparent);
  font-family: "Songti SC", "SimSun", serif;
  font-size: 26px;
  font-weight: 400;
}

.manual-page .manual-brand-note {
  display: block;
  color: var(--manual-muted);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.8;
}

.manual-page .manual-home,
.manual-page .manual-footer a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding-inline: 4px;
  font-size: 14px;
  text-decoration: none;
}

.manual-page .manual-home {
  flex-shrink: 0;
}

.manual-page .manual-layout {
  display: grid;
  grid-template-columns: 192px minmax(0, 1fr);
  gap: clamp(40px, 6vw, 84px);
  align-items: start;
  padding-block: 60px 84px;
}

.manual-page .manual-sidebar {
  position: sticky;
  top: 28px;
  min-width: 0;
}

.manual-page .manual-label {
  margin: 0;
  color: var(--manual-gold);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.manual-page .manual-toc ol {
  display: grid;
  gap: 4px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.manual-page .manual-toc a {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 46px;
  padding: 6px 10px;
  border-left: 1px solid var(--manual-line);
  color: var(--manual-text);
  font-size: 14px;
  text-decoration: none;
}

.manual-page .manual-toc a span {
  color: var(--manual-gold);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.manual-page .manual-toc a:hover,
.manual-page .manual-toc a:focus-visible {
  border-left-color: var(--manual-gold);
  background: rgba(222, 201, 156, 0.06);
}

.manual-page .manual-sidebar-note {
  margin: 32px 0 0;
  color: var(--manual-muted);
  font-size: 12px;
  line-height: 2;
}

.manual-page .manual-content {
  min-width: 0;
  max-width: 820px;
  overflow-wrap: anywhere;
}

.manual-page .manual-intro {
  padding: 0 0 40px;
}

.manual-page .manual-status {
  display: inline-block;
  margin-left: 12px;
  padding: 1px 9px;
  border: 1px solid var(--manual-line);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: 0.06em;
}

.manual-page h1 {
  margin: 19px 0 24px;
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.manual-page .manual-motto {
  margin: 0 0 12px;
  color: var(--manual-gold);
  font-size: clamp(20px, 2vw, 25px);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.manual-page .manual-lead {
  max-width: 38em;
  margin: 0 0 22px;
  color: var(--manual-text);
  font-size: 17px;
}

.manual-page .manual-promise {
  margin: 0;
  padding-block: 17px;
  border-top: 1px solid var(--manual-line);
  border-bottom: 1px solid var(--manual-soft-line);
  color: var(--manual-gold);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.manual-page .manual-intro-note {
  margin: 20px 0 12px;
  color: var(--manual-muted);
  font-size: 14px;
}

.manual-page .manual-meta {
  margin: 0;
  color: var(--manual-muted);
  font-size: 12px;
}

.manual-page .manual-section {
  scroll-margin-top: 28px;
  padding-top: 38px;
  border-top: 1px solid var(--manual-line);
}

.manual-page .manual-section + .manual-section {
  margin-top: 44px;
}

.manual-page .manual-section-heading {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
}

.manual-page .manual-section-number {
  color: var(--manual-gold);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.manual-page h2 {
  margin: 0;
  color: var(--manual-text);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.manual-page h3 {
  margin: 30px 0 12px;
  color: var(--manual-gold);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.7;
}

.manual-page .manual-section p {
  margin: 0 0 16px;
}

.manual-page .manual-section strong {
  color: #fff8e9;
  font-weight: 600;
}

.manual-page .manual-section ul,
.manual-page .manual-section ol {
  margin: 0 0 20px;
  padding-left: 1.45em;
}

.manual-page .manual-section li {
  padding-left: 0.3em;
}

.manual-page .manual-section li + li {
  margin-top: 12px;
}

.manual-page .manual-section li::marker {
  color: var(--manual-gold);
}

.manual-page .manual-note {
  margin-block: 24px;
  padding: 18px 22px;
  border: 1px solid var(--manual-soft-line);
  border-left: 2px solid var(--manual-gold);
  background: var(--manual-surface);
  font-size: 14px;
}

.manual-page .manual-note-important {
  background: linear-gradient(110deg, rgba(222, 201, 156, 0.06), transparent),
    var(--manual-surface);
}

.manual-page .manual-note .manual-note-title {
  margin-bottom: 6px;
  color: var(--manual-gold);
  font-size: 15px;
  font-weight: 600;
}

.manual-page .manual-note p:last-child {
  margin-bottom: 0;
}

.manual-page .manual-facts,
.manual-page .manual-rules {
  margin: 22px 0;
}

.manual-page .manual-facts > div,
.manual-page .manual-rules > div {
  padding-block: 16px;
  border-top: 1px solid var(--manual-soft-line);
}

.manual-page .manual-facts > div:last-child,
.manual-page .manual-rules > div:last-child {
  border-bottom: 1px solid var(--manual-soft-line);
}

.manual-page .manual-facts dt,
.manual-page .manual-rules dt {
  color: var(--manual-text);
  font-weight: 600;
}

.manual-page .manual-facts dt span {
  display: block;
  margin-top: 2px;
  color: var(--manual-gold);
  font-size: 15px;
  font-weight: 400;
}

.manual-page .manual-facts dd,
.manual-page .manual-rules dd {
  margin: 7px 0 0;
  color: var(--manual-muted);
  font-size: 15px;
}

.manual-page code {
  padding: 2px 5px;
  border: 1px solid var(--manual-soft-line);
  border-radius: 2px;
  color: #efdcba;
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.manual-page .manual-caution {
  padding-left: 16px;
  border-left: 1px solid var(--manual-line);
  color: var(--manual-muted);
  font-size: 14px;
}

.manual-page .manual-closing {
  padding-top: 18px;
  color: var(--manual-gold);
}

.manual-page .manual-return {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 42px;
  min-height: 48px;
  margin-top: 8px;
  padding: 9px 20px;
  border: 1px solid var(--manual-gold);
  border-radius: 2px;
  background: rgba(222, 201, 156, 0.04);
  font-size: 15px;
  text-decoration: none;
}

.manual-page .manual-return:hover {
  background: rgba(222, 201, 156, 0.11);
}

.manual-page .manual-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 20px;
  border-top: 1px solid var(--manual-line);
  color: var(--manual-muted);
  font-size: 12px;
}

.manual-page .manual-footer p {
  margin: 0;
}

@media (min-width: 1001px) and (max-height: 560px) {
  .manual-page .manual-sidebar {
    position: static;
  }
}

@media (max-width: 1000px) {
  .manual-page .manual-header,
  .manual-page .manual-layout,
  .manual-page .manual-footer {
    width: min(820px, calc(100% - 64px));
  }

  .manual-page .manual-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 38px;
    padding-top: 32px;
  }

  .manual-page .manual-sidebar {
    position: static;
  }

  .manual-page .manual-toc ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px 12px;
    margin-top: 12px;
  }

  .manual-page .manual-sidebar-note {
    display: none;
  }
}

@media (max-width: 560px) {
  .manual-page .manual-header,
  .manual-page .manual-layout,
  .manual-page .manual-footer {
    width: calc(100% - 40px);
  }

  .manual-page .manual-header {
    min-height: 90px;
    gap: 12px;
  }

  .manual-page .manual-brand {
    gap: 10px;
    font-size: 16px;
  }

  .manual-page .manual-brand-mark {
    flex-basis: 34px;
    width: 34px;
    height: 40px;
    font-size: 23px;
  }

  .manual-page .manual-brand-note {
    font-size: 10px;
    letter-spacing: 0.02em;
  }

  .manual-page .manual-home {
    gap: 6px;
    font-size: 13px;
  }

  .manual-page .manual-layout {
    gap: 32px;
    padding-block: 28px 48px;
  }

  .manual-page .manual-toc ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .manual-page .manual-toc a {
    gap: 10px;
    padding-left: 8px;
  }

  .manual-page .manual-intro {
    padding-bottom: 32px;
  }

  .manual-page h1 {
    font-size: clamp(26px, 7.5vw, 36px);
    letter-spacing: 0.02em;
  }

  .manual-page .manual-lead {
    font-size: 16px;
  }

  .manual-page .manual-promise {
    font-size: 13px;
    letter-spacing: 0;
  }

  .manual-page .manual-section {
    padding-top: 30px;
  }

  .manual-page .manual-section + .manual-section {
    margin-top: 32px;
  }

  .manual-page .manual-section-heading {
    gap: 12px;
    margin-bottom: 20px;
  }

  .manual-page h2 {
    font-size: 24px;
  }

  .manual-page .manual-note {
    padding: 16px;
  }

  .manual-page .manual-footer {
    gap: 12px;
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .manual-page *,
  .manual-page *::before,
  .manual-page *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (forced-colors: active) {
  .manual-page .manual-note,
  .manual-page .manual-return,
  .manual-page .manual-brand-mark,
  .manual-page .manual-status {
    border-color: CanvasText;
  }

  .manual-page :focus-visible {
    outline-color: Highlight;
  }
}