/* 内容站阅读样式
 *
 * 适用于 /scores/、/handbook/、/blog/ 下的静态页面。
 * Header、footer、主题 token 与首页保持一致；正文保留长文阅读优化。
 */

:root {
  --ink: #1a1a1a;
  --ink-soft: #2d2d35;
  --tea-gold: #8a6e3a;
  --tea-gold-soft: #c9b78e;
  --moon-white: #f5f0e6;

  --bg: #fbfaf6;
  --bg-elevated: #ffffff;
  --bg-soft: #f3efe5;
  --fg: #1a1a1a;
  --fg-muted: #5e5a52;
  --fg-soft: #8a8579;
  --border: #e5dfd0;
  --border-strong: #d4cbb4;
  --accent: #8a6e3a;
  --accent-hover: #6f5829;
  --accent-on: #ffffff;
  --link: #1f6fb5;
  --shadow-sm: 0 1px 2px rgba(26, 26, 26, 0.04), 0 1px 3px rgba(26, 26, 26, 0.06);
  --shadow-md: 0 4px 6px rgba(26, 26, 26, 0.04), 0 10px 20px rgba(26, 26, 26, 0.06);

  --radius-sm: 6px;
  --radius-md: 10px;

  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC',
                'Noto Serif', Georgia, 'Times New Roman', serif;
  --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei',
               -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, system-ui,
               'Helvetica Neue', Arial, sans-serif;

  --content-bg: var(--bg);
  --content-fg: #2a2823;
  --content-muted: var(--fg-muted);
  --content-border: var(--border);
  --content-accent: var(--accent);
  --content-link: var(--link);
  --content-link-hover: #14507f;
  --content-code-bg: #f0ece0;
  --content-quote-bar: var(--tea-gold-soft);
  --content-shadow: var(--shadow-md);
}

[data-theme='dark'] {
  --bg: #1a1a1a;
  --bg-elevated: #232228;
  --bg-soft: #2d2d35;
  --fg: #f5f0e6;
  --fg-muted: #b3ad9c;
  --fg-soft: #807a6d;
  --border: #3a3530;
  --border-strong: #524b40;
  --accent: #c9b78e;
  --accent-hover: #d8c8a3;
  --accent-on: #1a1a1a;
  --link: #6fb1ff;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);

  --content-bg: var(--bg);
  --content-fg: #e8e3d6;
  --content-muted: var(--fg-muted);
  --content-border: var(--border);
  --content-accent: var(--accent);
  --content-link: var(--link);
  --content-link-hover: #9cc7ff;
  --content-code-bg: #2a2823;
  --content-quote-bar: var(--tea-gold);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.content-page {
  margin: 0;
  background: var(--content-bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.site-header {
  border-bottom: 1px solid var(--content-border);
  background: rgba(251, 250, 246, 0.85);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
}

[data-theme='dark'] .site-header {
  background: rgba(26, 26, 26, 0.85);
}

.site-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
  font-size: 17px;
  min-width: 0;
}

.site-brand img {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
}

.site-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.site-nav a {
  text-decoration: none;
  color: var(--fg-muted);
  font-size: 15px;
  transition: color 0.15s;
}

.site-nav a:hover, .site-nav a.active {
  color: var(--fg);
}

.site-spacer { flex: 1; }

.site-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-theme-toggle,
.site-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.site-theme-toggle:hover,
.site-menu-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.site-theme-toggle svg,
.site-menu-toggle svg {
  width: 18px;
  height: 18px;
  display: block;
}

.site-theme-toggle .icon-sun { display: none; }
.site-theme-toggle .icon-moon { display: block; }
[data-theme='dark'] .site-theme-toggle .icon-sun { display: block; }
[data-theme='dark'] .site-theme-toggle .icon-moon { display: none; }

.site-menu-toggle { display: none; }

.editor-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--accent-on);
  border: 1px solid var(--accent);
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}

.editor-cta:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-on);
}

.editor-cta:active { transform: translateY(1px); }

.editor-cta::after {
  content: "→";
  font-size: 1.05em;
  transition: transform 0.15s;
}

.editor-cta:hover::after { transform: translateX(3px); }

main.content-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
  color: var(--content-fg);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.75;
}

main.content-wide {
  max-width: 1080px;
}

.content-main h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: 0;
}

.content-main h2 {
  font-size: 26px;
  line-height: 1.3;
  font-weight: 700;
  margin: 56px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--content-border);
}

.content-main h3 {
  font-size: 20px;
  margin: 36px 0 12px;
}

.content-main p { margin: 0 0 18px; }

.content-main a {
  color: var(--content-link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}

.content-main a:hover {
  border-bottom-color: var(--content-link);
}

.content-main a.editor-cta {
  color: var(--accent-on);
  border-bottom: 0;
}

.content-main a.editor-cta:hover {
  color: var(--accent-on);
}

.content-main blockquote {
  margin: 24px 0;
  padding: 12px 20px;
  border-left: 4px solid var(--content-quote-bar);
  background: rgba(201, 183, 142, 0.08);
  color: var(--content-muted);
  font-style: italic;
}

.content-main code {
  background: var(--content-code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.92em;
  font-family: 'JetBrains Mono', Consolas, monospace;
}

.content-main pre {
  background: var(--content-code-bg);
  padding: 16px 20px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.55;
}

.content-main pre code {
  background: transparent;
  padding: 0;
}

.content-main ul, .content-main ol {
  margin: 0 0 18px;
  padding-left: 28px;
}

.content-main li { margin: 6px 0; }

.content-main hr {
  border: none;
  border-top: 1px solid var(--content-border);
  margin: 48px 0;
}

.content-main img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.content-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

.content-main th, .content-main td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--content-border);
  text-align: left;
}

.content-main th {
  font-weight: 600;
  background: var(--content-code-bg);
}

/* 文章页头部元信息 */
.article-meta {
  color: var(--content-muted);
  font-size: 14px;
  margin: 0 0 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-style: italic;
}

.article-meta .meta-tag {
  background: var(--content-code-bg);
  padding: 2px 10px;
  border-radius: 3px;
  font-style: normal;
}

/* 索引页（曲谱库 / 博客 / 手册） */
.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.index-card {
  background: var(--content-bg);
  border: 1px solid var(--content-border);
  border-radius: 6px;
  padding: 20px 24px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  display: block;
}

.index-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--content-shadow);
  border-color: var(--content-accent);
}

.index-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
  border: none;
  padding: 0;
}

.index-card .card-meta {
  color: var(--content-muted);
  font-size: 13px;
  margin: 0 0 8px;
  font-style: italic;
}

.index-card .card-desc {
  color: var(--content-muted);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.section-lead {
  color: var(--content-muted);
  font-size: 18px;
  max-width: 760px;
}

.link-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
}

.link-row {
  border: 1px solid var(--content-border);
  border-radius: 6px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.22);
}

.link-row strong {
  display: block;
  margin-bottom: 4px;
}

.link-row p {
  margin: 0;
  color: var(--content-muted);
  font-size: 14px;
  line-height: 1.6;
}

.callout {
  border: 1px solid var(--content-border);
  border-left: 4px solid var(--content-accent);
  border-radius: 6px;
  padding: 16px 18px;
  margin: 24px 0;
  background: rgba(201, 183, 142, 0.10);
}

.toc-panel {
  border: 1px solid var(--content-border);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 24px 0 32px;
  background: rgba(255, 255, 255, 0.18);
}

.toc-panel ol {
  margin-bottom: 0;
}

.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--content-border);
  margin-top: 80px;
  padding: 56px 24px 40px;
  color: var(--fg-muted);
  font-family: var(--font-sans);
  font-size: 14px;
}

.site-footer a {
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.site-footer a:hover { color: var(--accent); }

.site-footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 48px;
}

.site-footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--fg);
  margin-bottom: 12px;
}

.site-footer-brand img {
  width: 24px;
  height: 24px;
}

.site-footer-tagline {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 320px;
}

.site-footer h4 {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-soft);
  font-weight: 600;
  margin: 0 0 14px;
}

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

.site-footer li { margin: 0 0 10px; }

.site-footer-bottom {
  max-width: 1120px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--fg-soft);
}

.site-footer-langs {
  display: flex;
  gap: 14px;
}

.site-footer-langs a { color: var(--fg-soft); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-on);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 200;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (max-width: 960px) {
  .site-footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 720px) {
  body.content-page { font-size: 15px; }

.site-header-inner {
    position: relative;
    padding: 12px 16px;
    gap: 10px;
  }

  .site-brand {
    flex: 1 1 auto;
    overflow: hidden;
  }

  .site-brand span {
    font-size: 16px;
    white-space: nowrap;
  }

  .site-brand span span { display: none; }

  .site-spacer { display: none; }

  .site-actions {
    flex: 0 0 auto;
    gap: 8px;
  }

  .site-menu-toggle { display: inline-flex; }

  .site-nav {
    display: none;
  }

  .site-nav.is-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100vw;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 12px 18px 16px;
    gap: 6px;
  }

  .site-nav.is-open a {
    padding: 10px 6px;
    border-radius: var(--radius-sm);
    font-size: 16px;
  }

  .site-nav.is-open a:hover {
    background: var(--bg-soft);
  }

  .site-actions .desktop-only { display: none; }

  main.content-main {
    padding: 32px 18px 64px;
    font-size: 16px;
  }

  .content-main h1 { font-size: 30px; }
  .content-main h2 { font-size: 22px; margin-top: 40px; }
  .site-footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .site-footer-bottom { flex-direction: column; align-items: flex-start; }
}