/* ============================================================
   main.css — C站 跳動e成效
   FiveThirtyEight editorial × field notes 操盤氣質
   Moved from mockup-C.html (stage-03 搬運層)
   NOTE: critical CSS 已 inline 在 head.html；本檔補完整樣式
   ============================================================ */

/* ============================================================
   CSS CUSTOM PROPERTIES (已在 head.html critical CSS inline 定義，此處保留完整集)
   ============================================================ */
:root {
  --color-navy:       #1B3A6B;
  --color-navy-light: #2C5282;
  --color-slate:      #4A5568;
  --color-bg:         #FFFFFF;
  --color-bg-tint:    #F7F9FC;
  --color-text:       #1A1A2E;
  --color-text-muted: #6B7280;
  --color-border:     #E2E8F0;
  --color-accent-bar: #E63946;
  --color-accent-ok:  #2D6A4F;
  --font-serif:  'Source Serif 4', Georgia, serif;
  --font-sans:   'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:   'IBM Plex Mono', 'Courier New', monospace;
  --max-content: 720px;
  --max-site:    1100px;
  --line-body:   1.75;
  --line-heading:1.2;
}

/* ============================================================
   RESET + BASE (critical CSS 已含，此處重申確保 specificity)
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-body);
}
a { color: var(--color-navy); text-decoration: none; }
a:hover { color: var(--color-navy-light); text-decoration: underline; text-decoration-color: var(--color-navy-light); }
img { max-width: 100%; display: block; }

/* ============================================================
   TYPOGRAPHY SCALE
   ============================================================ */
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: var(--line-heading);
  color: var(--color-text);
}
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h3 { font-size: 1.125rem; }
p  { font-size: 1.0625rem; line-height: var(--line-body); }

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   SITE HEADER (critical CSS 已含 above-fold 部分，此處補完整)
   ============================================================ */
.site-header {
  border-bottom: 3px solid var(--color-navy);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.site-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-header__logo-mark {
  width: 36px;
  height: 36px;
  background: var(--color-navy);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.site-header__logo-mark span {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 18px;
  color: #fff;
  letter-spacing: -0.5px;
}
.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.site-header__brand-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
}
.site-header__brand-sub {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* 主導覽 */
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav__link {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 6px 12px;
  border-radius: 4px;
  text-decoration: none;
  transition: color 0.2s ease-out, background 0.2s ease-out;
}
.site-nav__link:hover {
  color: var(--color-navy);
  background: var(--color-bg-tint);
  text-decoration: none;
}
.site-nav__link--active { color: var(--color-navy); }

/* 漢堡按鈕（桌面隱藏） */
.hamburger { display: none; }

/* 手機展開選單 */
.mobile-nav {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  z-index: 99;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.mobile-nav[hidden] { display: none; }
.mobile-nav__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  text-decoration: none;
  transition: background 0.15s ease-out;
}
.mobile-nav__item:hover { background: var(--color-bg-tint); text-decoration: none; }
.mobile-nav__item--active { color: var(--color-navy); }
.mobile-nav__chevron { font-size: 0.875rem; color: var(--color-text-muted); }
.mobile-nav__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  background: var(--color-navy);
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  transition: background 0.2s ease-out;
}
.mobile-nav__cta:hover { background: var(--color-navy-light); text-decoration: none; color: #fff; }

/* ============================================================
   HOME HERO (View A)
   ============================================================ */
.home-hero {
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0 44px;
}
.home-hero__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}
.home-hero__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-navy);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.home-hero__label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
}
.home-hero__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.75rem, 4vw, 2.625rem);
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 16px;
}
.home-hero__deck {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
  max-width: 540px;
}
.home-hero__featured-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  margin-bottom: 12px;
}
.home-hero__article-title {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 8px;
}
.home-hero__article-title a { color: inherit; }
.home-hero__article-title a:hover { color: var(--color-navy); text-decoration: none; }
.home-hero__article-deck {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.home-hero__article-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 側邊 — 指標快覽 */
.home-hero__sidebar {
  border-left: 1px solid var(--color-border);
  padding-left: 32px;
}
.home-hero__sidebar-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.kpi-quick { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.kpi-quick__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}
.kpi-quick__name {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.kpi-quick__val {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 400;
}
.kpi-quick__val--ok     { color: var(--color-accent-ok); }
.kpi-quick__val--bad    { color: var(--color-accent-bar); }
.kpi-quick__val--neutral{ color: var(--color-navy); }
.kpi-quick__note {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-text-muted);
}
.kpi-quick__source {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   META TAG (共用)
   ============================================================ */
.meta-tag {
  background: var(--color-bg-tint);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 0.6875rem;
  font-family: var(--font-sans);
  color: var(--color-navy);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ============================================================
   HOME CATEGORIES (View A — section 2)
   ============================================================ */
.home-categories {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
}
.home-categories__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
}
.home-categories__heading {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}
.home-categories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}
.cat-card {
  background: var(--color-bg);
  padding: 24px;
  transition: background 0.2s ease-out;
  text-decoration: none;
  display: block;
}
.cat-card:hover { background: var(--color-bg-tint); text-decoration: none; }
.cat-card__number {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-navy);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.cat-card__title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 6px;
}
.cat-card__desc {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ============================================================
   HOME RECENT POSTS (View A — section 3)
   ============================================================ */
.home-recent { padding: 40px 0 56px; }
.home-recent__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
}
.home-recent__heading {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}
.article-list { list-style: none; }
.article-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}
.article-list__item:first-child { border-top: 1px solid var(--color-border); }
.article-list__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  min-width: 80px;
}
.article-list__title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.4;
}
.article-list__title a { color: inherit; transition: color 0.15s ease-out; }
.article-list__title a:hover { color: var(--color-navy); text-decoration: none; }
.article-list__tag { margin-left: 10px; }

/* ============================================================
   CATEGORY LIST PAGE (View B)
   ============================================================ */
.cat-header {
  background: var(--color-bg-tint);
  border-bottom: 3px solid var(--color-navy);
  padding: 32px 0;
}
.cat-header__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
}
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-navy); }
.cat-header__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}
.cat-header__desc {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.cat-body {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 36px 24px 56px;
}
.post-list { list-style: none; }
.post-card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}
.post-card:first-child { border-top: 1px solid var(--color-border); }
.post-card__date-block { text-align: right; }
.post-card__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 4px;
}
.post-card__readtime {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-text-muted);
}
.post-card__title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 6px;
}
.post-card__title a { color: inherit; transition: color 0.15s ease-out; }
.post-card__title a:hover { color: var(--color-navy); text-decoration: none; }
.post-card__excerpt {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 10px;
}
.post-card__tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* ============================================================
   ARTICLE PAGE (View C)
   ============================================================ */
.article-header {
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0 32px;
}
.article-header__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 24px;
}
.article-header__breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.article-header__breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.article-header__breadcrumb a:hover { color: var(--color-navy); }
.article-header__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.375rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 16px;
}
.article-header__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.article-meta__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.article-meta__readtime {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Answer-first 摘要段 */
.article-summary {
  background: var(--color-bg-tint);
  border-left: 3px solid var(--color-navy);
  margin: 0;
  padding: 24px 0 8px;
}
.article-summary__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 24px 24px;
}
.article-summary__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-navy);
  margin-bottom: 10px;
}
.article-summary__text {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text);
}
.article-summary__text strong { color: var(--color-navy); font-weight: 600; }

/* 文章正文 */
.article-body { padding: 40px 0 56px; }
.article-body__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 24px;
}
.article-body__inner h2 {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  margin: 36px 0 14px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}
.article-body__inner h2:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.article-body__inner h3 {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 24px 0 10px;
}
.article-body__inner p {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 20px;
}
.article-body__inner ul,
.article-body__inner ol {
  padding-left: 1.5em;
  margin-bottom: 20px;
}
.article-body__inner li {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 6px;
}
.article-body__inner strong { color: var(--color-navy); }
.article-body__inner a { color: var(--color-navy); }
.article-body__inner a:hover { color: var(--color-navy-light); }

/* 文章尾部來源說明 */
.article-body__inner .article-source {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 8px;
}

/* ============================================================
   KPI 指標卡片（inline editorial 資產）
   ============================================================ */
.kpi-card {
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-navy);
  background: var(--color-bg);
  padding: 20px 24px;
  margin: 28px 0;
}
.kpi-card__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}
.kpi-card__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}
.kpi-cell {
  background: var(--color-bg);
  padding: 14px 16px;
}
.kpi-cell__metric {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.kpi-cell__value {
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 4px;
}
.kpi-cell__value--ok  { color: var(--color-accent-ok); }
.kpi-cell__value--bad { color: var(--color-accent-bar); }
.kpi-cell__bench {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}
.kpi-card__note {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* ============================================================
   橫向比較 Bar（inline editorial 資產）
   ============================================================ */
.compare-bar {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: 20px 24px;
  margin: 28px 0;
}
.compare-bar__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}
.compare-row {
  display: grid;
  grid-template-columns: 140px 1fr 60px;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
}
.compare-row:last-child { margin-bottom: 0; }
.compare-row__label {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-text);
}
.compare-row__track {
  height: 10px;
  background: var(--color-bg-tint);
  border-radius: 2px;
  overflow: hidden;
}
.compare-row__fill { height: 100%; border-radius: 2px; }
.compare-row__fill--bad     { background: var(--color-accent-bar); }
.compare-row__fill--ok      { background: var(--color-accent-ok); }
.compare-row__fill--neutral { background: var(--color-navy); }
.compare-row__val {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: right;
}

/* ============================================================
   num-highlight shortcode（KPI 單格）
   ============================================================ */
.num-highlight {
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-navy);
  padding: 16px 20px;
  margin: 20px 0;
  display: flex;
  gap: 1px;
  background: var(--color-border);
}
.num-cell {
  background: var(--color-bg);
  padding: 14px 16px;
  flex: 1;
}
.num-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.num-value {
  font-family: var(--font-mono);
  font-size: 1.375rem;
  color: var(--color-text);
  margin-bottom: 4px;
}
.num-value--ok  { color: var(--color-accent-ok); }
.num-value--bad { color: var(--color-accent-bar); }
.num-unit {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.num-note {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ============================================================
   skip-box shortcode
   ============================================================ */
.skip-box {
  border: 1px solid var(--color-accent-bar);
  background: var(--color-bg);
  padding: 16px 20px;
  margin: 20px 0;
}
.skip-box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.skip-box-icon {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-accent-bar);
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--color-accent-bar);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.skip-box-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-accent-bar);
}
.skip-box-body {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-text);
}
.skip-box-body ul { padding-left: 1.25em; }
.skip-box-body li { margin-bottom: 4px; }

/* ============================================================
   budget-table shortcode
   ============================================================ */
.budget-table-wrap {
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-navy);
  margin: 20px 0;
}
.budget-table-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-tint);
}
.budget-table-head-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.budget-table-head-sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.budget-table-inner {
  padding: 16px 20px;
  overflow-x: auto;
}
.budget-table-inner table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.875rem;
}
.budget-table-inner th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-align: left;
  padding: 8px 12px;
  border-bottom: 2px solid var(--color-border);
}
.budget-table-inner td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

/* ============================================================
   SITE FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.55);
  padding: 32px 0;
}
.site-footer__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.site-footer__brand {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.85);
}
.site-footer__note {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.4);
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.pagination__link {
  color: var(--color-navy);
  text-decoration: none;
  transition: color 0.15s ease-out;
}
.pagination__link:hover { color: var(--color-navy-light); text-decoration: underline; }
.pagination__info { color: var(--color-text-muted); }

/* ============================================================
   404 ERROR PAGE
   ============================================================ */
.error-page {
  padding: 80px 0;
  text-align: center;
}
.error-page__inner {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 24px;
}
.error-page__code {
  font-family: var(--font-mono);
  font-size: 4rem;
  color: var(--color-border);
  margin-bottom: 16px;
}
.error-page__title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-text);
  margin-bottom: 12px;
}
.error-page__desc {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}
.error-page__link {
  display: inline-block;
  padding: 10px 24px;
  background: var(--color-navy);
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s ease-out;
}
.error-page__link:hover { background: var(--color-navy-light); text-decoration: none; color: #fff; }

/* ============================================================
   RWD — 手機版（< 768px）
   ============================================================ */
@media (max-width: 767px) {
  /* Header: 桌面 nav 隱藏 → 漢堡 */
  .site-nav { display: none; }
  .hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
  }
  .hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: transform 0.2s ease-out, opacity 0.2s ease-out;
  }
  /* 展開態：X 形 */
  .hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .hamburger.is-open span:nth-child(2) { opacity: 0; }
  .hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Hero: 單欄（側欄指標移至文章列表下方） */
  .home-hero { padding: 32px 0 28px; }
  .home-hero__inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .home-hero__sidebar {
    border-left: none;
    border-top: 1px solid var(--color-border);
    padding-left: 0;
    padding-top: 20px;
  }
  .home-hero__deck { max-width: 100%; }

  /* 分類 grid: 單欄 */
  .home-categories__grid { grid-template-columns: 1fr; }

  /* 文章列表: 日期欄隱藏，日期移至標題上方 */
  .article-list__item { grid-template-columns: 1fr; gap: 4px; }
  .article-list__date { font-size: 0.6875rem; }

  /* Post card: 日期欄壓縮 */
  .post-card { grid-template-columns: 70px 1fr; gap: 16px; }
  .post-card__date-block { text-align: left; }

  /* Article body: 減少 padding */
  .article-header__inner,
  .article-summary__inner,
  .article-body__inner { padding: 0 16px; }
  .article-header { padding: 28px 0 20px; }
  .article-body { padding: 28px 0 40px; }

  /* KPI grid: 單欄 */
  .kpi-card__grid { grid-template-columns: 1fr; }
  .compare-row { grid-template-columns: 1fr; gap: 6px; }
  .compare-row__track { height: 8px; }
  .compare-row__val { text-align: left; }

  /* Footer: 單欄 */
  .site-footer__inner { flex-direction: column; align-items: flex-start; gap: 8px; }

  /* Cat body padding */
  .cat-body { padding: 24px 16px 40px; }
  .cat-header__inner { padding: 0 16px; }
}

/* ============================================================
   RWD — 中斷點（768px）
   ============================================================ */
@media (min-width: 768px) and (max-width: 1099px) {
  .home-hero__inner { grid-template-columns: 1fr 280px; gap: 32px; }
  .home-categories__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================
   HOVER TRANSITIONS (唯一允許的動畫: :hover transition)
   無 @keyframes / 無 JS 動畫
   ============================================================ */
.cat-card          { transition: background 0.2s ease-out; }
.site-nav__link    { transition: color 0.2s ease-out, background 0.2s ease-out; }
.article-list__title a { transition: color 0.15s ease-out; }
.post-card__title a    { transition: color 0.15s ease-out; }