/* ============================================================
   ZUG NOTES — MAIN STYLESHEET
   Extracted from mockup-zugnotes.html (stage-01 定稿)
   Variables declared here for reference; critical subset inlined in head.html
   ============================================================ */

:root {
  --pine:        #2E5D4B;
  --pine-light:  #F0F4ED;
  --pine-mid:    #3D7A63;
  --offwhite:    #FAFAFA;
  --body-text:   #1C2B3A;
  --text-muted:  #4A5A68;
  --text-light:  #7A8A98;
  --border:      #D8DFD7;
  --border-pine: #2E5D4B;
  --bg-subtle:   #F4F7F5;
  --mono-bg:     #EEF2EE;
  --link-color:  #2E5D4B;
  --link-hover:  #1E3D32;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
}

/* ---- RESET (full, outside critical inline) ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  font-weight: 400;
  background: var(--offwhite);
  color: var(--body-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ---- TYPOGRAPHY ---- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--body-text);
}
h1 { font-size: 2.4rem; }
h2 { font-size: 1.7rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }
p { margin-bottom: 1.15em; }

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.18s ease;
}
a:hover { color: var(--link-hover); text-decoration: underline; }

/* WCAG 2.1 AA focus-visible (stage-02 warning 補入) */
:focus-visible {
  outline: 2.5px solid var(--pine);
  outline-offset: 3px;
  border-radius: 2px;
}

time, .mono {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

/* ---- UTILITY ---- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

.page-section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-body);
}

/* ============================================================
   GLOBAL HEADER / NAV
   ============================================================ */
.site-header {
  background: var(--offwhite);
  border-bottom: 1.5px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  gap: 2rem;
}

.site-logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.site-logo-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.18rem;
  color: var(--body-text);
  line-height: 1.1;
  transition: color 0.18s ease;
}
.site-logo:hover .site-logo-name { color: var(--pine); }

.site-logo-tagline {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.3rem 0.8rem;
  border-radius: 3px;
  text-decoration: none;
  transition: color 0.18s ease, background 0.18s ease;
}
.site-nav a:hover {
  color: var(--pine);
  background: var(--pine-light);
  text-decoration: none;
}
.site-nav a.active {
  color: var(--pine);
  border-bottom: 2px solid var(--pine);
  border-radius: 0;
}

.nav-cta {
  margin-left: 0.5rem;
  background: var(--pine) !important;
  color: #fff !important;
  padding: 0.35rem 1rem !important;
  border-radius: 3px !important;
  font-size: 0.8rem !important;
  transition: background 0.18s ease !important;
}
.nav-cta:hover {
  background: var(--link-hover) !important;
  text-decoration: none !important;
}

/* Hamburger (hidden on desktop) */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--body-text);
  border-radius: 1px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

/* ============================================================
   MAIN LAYOUT: content + sidebar
   ============================================================ */
.page-wrapper {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

.content-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 250px;
  gap: 3.5rem;
  align-items: start;
  padding: 3rem 0 4rem;
}

.main-content { min-width: 0; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  position: sticky;
  top: 80px;
}

.sidebar-module {
  border-left: 3px solid var(--border-pine);
  padding-left: 1.1rem;
  margin-bottom: 2.5rem;
}

.sidebar-module-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pine);
  margin-bottom: 0.8rem;
}

.sidebar-module p, .sidebar-module li {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin-bottom: 0;
}

.glossary-list { list-style: none; }
.glossary-list li {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
}
.glossary-list li:last-child { border-bottom: none; }
.glossary-term {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--pine);
  font-weight: 400;
  display: block;
  margin-bottom: 2px;
}
.glossary-def {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.source-list { list-style: none; }
.source-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
}
.source-list li:last-child { border-bottom: none; }
.source-list a {
  font-size: 0.8rem;
  color: var(--pine);
  font-weight: 600;
}
.source-desc {
  font-size: 0.72rem;
  color: var(--text-light);
  display: block;
  margin-top: 1px;
}

.author-mini {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}
.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--pine-light);
  border: 2px solid var(--border-pine);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--pine);
}
.author-bio {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.author-bio a, a.author-bio {
  font-size: 0.72rem;
  display: inline-block;
  margin-top: 0.3rem;
}

/* ============================================================
   HOMEPAGE — SECTION A: INTRO BANNER
   ============================================================ */
.home-intro {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.home-intro .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pine);
  margin-bottom: 0.7rem;
}

.home-intro h1 {
  font-size: 2.15rem;
  margin-bottom: 0.7rem;
  max-width: 58ch;
}

.home-intro .intro-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  max-width: 55ch;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ============================================================
   HOMEPAGE — SECTION B: ARTICLE LIST
   ============================================================ */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.2rem;
}

.section-header h2 {
  font-size: 1.1rem;
}

.section-header a.view-all {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--pine);
  letter-spacing: 0.02em;
}

.article-list { list-style: none; }

.article-list-item {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border);
}
.article-list-item:first-child { border-top: 1px solid var(--border); }

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.4rem;
}

.category-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--pine-light);
  color: var(--pine);
  padding: 0.18rem 0.55rem;
  border-radius: 2px;
}

.article-list-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
  line-height: 1.35;
}
.article-list-item h3 a {
  color: var(--body-text);
  text-decoration: none;
  transition: color 0.18s ease;
}
.article-list-item h3 a:hover { color: var(--pine); }

.article-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0;
  max-width: 65ch;
}

/* ============================================================
   CATEGORY QUICK ACCESS
   ============================================================ */
.category-quick-access {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.category-quick-access .page-section-label {
  margin-bottom: 1rem;
}

/* ============================================================
   CATEGORY PAGE
   ============================================================ */
.category-header {
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.category-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--pine);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.category-header h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.category-header p {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 52ch;
  margin-bottom: 0;
}

.category-tabs {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.category-tab {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 2px;
  color: var(--text-muted);
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.category-tab:hover, .category-tab.active {
  border-color: var(--pine);
  color: var(--pine);
  text-decoration: none;
}

/* ============================================================
   SINGLE ARTICLE PAGE
   ============================================================ */
.article-header {
  padding: 2.5rem 0 1.8rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.article-header .article-meta {
  margin-bottom: 0.9rem;
}

.article-header h1 {
  font-size: 2.2rem;
  line-height: 1.22;
  margin-bottom: 0.7rem;
  max-width: 58ch;
}

.article-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 55ch;
  line-height: 1.6;
  margin-bottom: 0.9rem;
}

.article-byline {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.byline-sep { color: var(--border); }

/* ============================================================
   ARTICLE BODY
   ============================================================ */
.article-body {
  max-width: 68ch;
}

.article-body p { font-size: 1rem; line-height: 1.78; }

/* Drop cap — Craig Mod inspired (D站獨占設計資產) */
.article-body > p:first-of-type::first-letter {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 3.8em;
  line-height: 0.78;
  float: left;
  margin-right: 0.08em;
  margin-top: 0.06em;
  color: var(--pine);
}

.article-body h2 {
  font-size: 1.5rem;
  margin: 2.2rem 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.article-body h3 {
  font-size: 1.15rem;
  margin: 1.6rem 0 0.5rem;
}

.article-body blockquote {
  border-left: 3px solid var(--pine);
  margin: 1.5rem 0;
  padding: 0.8rem 1.2rem;
  background: var(--pine-light);
  border-radius: 0 3px 3px 0;
}
.article-body blockquote p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0;
  font-style: italic;
}

/* Data callout box (D站獨占設計資產) */
.data-callout {
  border-left: 3px solid var(--pine);
  padding: 0.9rem 1.1rem;
  background: var(--pine-light);
  margin: 1.5rem 0;
  border-radius: 0 3px 3px 0;
}
.data-callout .callout-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pine);
  margin-bottom: 0.3rem;
}
.data-callout p {
  font-size: 0.875rem;
  margin-bottom: 0;
  color: var(--body-text);
}

.article-body a {
  text-decoration: underline;
  text-underline-offset: 2px;
  color: var(--pine);
}

.article-body ul, .article-body ol {
  padding-left: 1.4em;
  margin-bottom: 1.15em;
}
.article-body li {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 0.3em;
}

/* Inline code */
.article-body code, code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--mono-bg);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  color: var(--pine);
}

/* Article cover image */
.article-cover {
  margin: 0 0 2rem;
}
.article-cover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 3px;
}

/* Article footer */
.article-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.disclaimer-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.9rem 1.1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.disclaimer-box strong {
  color: var(--body-text);
  font-weight: 600;
}

/* ============================================================
   THREE-ELEMENT SHORTCODES (§十二)
   ============================================================ */

/* num-highlight */
.num-highlight {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}
.num-cell {
  flex: 1;
  min-width: 120px;
  background: var(--pine-light);
  border-left: 3px solid var(--pine);
  border-radius: 0 3px 3px 0;
  padding: 0.8rem 1rem;
}
.num-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.num-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--pine);
  line-height: 1;
}
.num-unit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}
.num-note {
  font-size: 0.72rem;
  color: var(--text-light);
  margin-top: 0.3rem;
}

/* skip-box */
.skip-box {
  background: var(--bg-subtle);
  border: 1.5px solid var(--border);
  border-radius: 3px;
  margin: 1.5rem 0;
  overflow: hidden;
}
.skip-box-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--border);
  padding: 0.5rem 1rem;
}
.skip-box-icon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--text-muted);
  color: var(--offwhite);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.skip-box-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--body-text);
}
.skip-box-body {
  padding: 0.8rem 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.skip-box-body ul { padding-left: 1.2em; }
.skip-box-body li { margin-bottom: 0.2em; }

/* budget-table */
.budget-table-wrap {
  margin: 1.5rem 0;
  overflow-x: auto;
}
.budget-table-head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 0.6rem;
}
.budget-table-head-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pine);
  font-weight: 400;
}
.budget-table-head-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.budget-table-inner table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.budget-table-inner th {
  text-align: left;
  font-weight: 600;
  padding: 0.4rem 0.6rem;
  border-bottom: 2px solid var(--border-pine);
  color: var(--body-text);
  background: var(--pine-light);
}
.budget-table-inner td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
.budget-table-inner tr:last-child td { border-bottom: none; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1.5px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 1.2rem;
}
.footer-links a {
  font-size: 0.78rem;
  color: var(--text-light);
}
.footer-links a:hover { color: var(--pine); text-decoration: none; }

/* ============================================================
   MOBILE — < 768px
   ============================================================ */
@media (max-width: 767px) {
  .content-with-sidebar {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 1.5rem 0 3rem;
  }

  .sidebar {
    position: static;
    border-top: 2px solid var(--border);
    padding-top: 2rem;
  }

  .hamburger-btn { display: flex; }
  .site-nav { display: none; }

  .header-inner { height: 54px; }

  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.35rem; }

  .home-intro { padding: 1.5rem 0 1rem; }
  .article-header { padding: 1.5rem 0 1.2rem; }

  .article-body > p:first-of-type::first-letter {
    font-size: 3em;
  }

  .footer-inner { flex-direction: column; align-items: flex-start; }

  .num-highlight { flex-direction: column; }
}

/* TABLET — 768px–1023px */
@media (min-width: 768px) and (max-width: 1023px) {
  .content-with-sidebar {
    grid-template-columns: 1fr 200px;
    gap: 2rem;
  }
}

/* ---- MOBILE DRAWER ---- */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 54px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--offwhite);
  z-index: 200;
  overflow-y: auto;
  border-top: 1.5px solid var(--border);
  padding: 1.5rem 1.5rem 3rem;
}

.mobile-drawer.open { display: block; }

.mobile-nav-links { list-style: none; margin-bottom: 1.5rem; }
.mobile-nav-links li { border-bottom: 1px solid var(--border); }
.mobile-nav-links a {
  display: block;
  padding: 0.85rem 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--body-text);
  text-decoration: none;
}
.mobile-nav-links a:hover { color: var(--pine); text-decoration: none; }
.mobile-nav-links a.active { color: var(--pine); }

.mobile-drawer-cta {
  display: block;
  background: var(--pine);
  color: #fff !important;
  text-align: center;
  padding: 0.8rem 1rem;
  border-radius: 3px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  margin-top: 0.5rem;
}
.mobile-drawer-cta:hover {
  background: var(--link-hover) !important;
  text-decoration: none;
}

.mobile-drawer-tagline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-light);
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
}

/* Hugo internal pagination */
.pagination {
  display: flex;
  gap: 0.5rem;
  margin-top: 2rem;
  list-style: none;
  flex-wrap: wrap;
}
.pagination .page-item .page-link {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border: 1.5px solid var(--border);
  border-radius: 2px;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.pagination .page-item.active .page-link,
.pagination .page-item .page-link:hover {
  border-color: var(--pine);
  color: var(--pine);
}