/* =========================================================
   CRIVU · 正式版樣式
   -------------------------------------------------
   - 頂部導航 + 搜尋 + 三段背景切換
   - 首頁只顯示最新文章（目次列表風格）
   - 期刊 = 立體書本 + 獨立詳情頁
   - 文章 = 極簡排版，大字、圖片對齊段落
   - Sticky footer
   - 手機版：漢堡選單 + 折疊搜尋 + 跨平台 SVG 圖示
   - 主題：白色、紙黃、墨青夜色
   ========================================================= */

/* ---------- 顏色令牌 ---------- */
:root,
:root[data-theme="white"] {
  --paper: #ffffff;
  --paper-warm: #f7f7f4;
  --paper-edge: #ecebe6;
  --ink: #1a1814;
  --ink-soft: #2a2520;
  --muted: #7a7168;
  --line: rgba(26, 24, 20, 0.12);
  --line-strong: rgba(26, 24, 20, 0.42);
  --hairline: rgba(26, 24, 20, 0.08);

  --seal: #9f3c3c;
  --seal-ink: #7a2c2c;

  /* Header：毛玻璃白 */
  --nav-bg: rgba(255, 255, 255, 0.76);
  --nav-bg-fallback: rgba(255, 255, 255, 0.96);
  --nav-ink: #1a1814;
  --nav-ink-dim: rgba(26, 24, 20, 0.58);
  --nav-line: rgba(26, 24, 20, 0.1);
  --nav-field: rgba(26, 24, 20, 0.04);
  --nav-field-focus: rgba(26, 24, 20, 0.08);

  --dropdown-bg: #ffffff;
  --dropdown-line: rgba(26, 24, 20, 0.1);

  /* Footer：深棕而非純黑 */
  --footer-bg: #2a2520;
  --footer-ink: #ece5d4;
  --footer-ink-dim: rgba(236, 229, 212, 0.6);
  --footer-line: rgba(236, 229, 212, 0.12);

  color-scheme: light;
}

:root[data-theme="light"] {
  --paper: #f5f1e8;
  --paper-warm: #ece5d4;
  --paper-edge: #e3dccb;
  --ink: #1a1814;
  --ink-soft: #2a2520;
  --muted: #7a7168;
  --line: rgba(26, 24, 20, 0.12);
  --line-strong: rgba(26, 24, 20, 0.42);
  --hairline: rgba(26, 24, 20, 0.08);

  --seal: #9f3c3c;
  --seal-ink: #7a2c2c;

  /* Header：毛玻璃米白 */
  --nav-bg: rgba(245, 241, 232, 0.72);
  --nav-bg-fallback: rgba(245, 241, 232, 0.95);
  --nav-ink: #1a1814;
  --nav-ink-dim: rgba(26, 24, 20, 0.58);
  --nav-line: rgba(26, 24, 20, 0.1);
  --nav-field: rgba(26, 24, 20, 0.04);
  --nav-field-focus: rgba(26, 24, 20, 0.08);

  --dropdown-bg: #fbf8f1;
  --dropdown-line: rgba(26, 24, 20, 0.1);

  /* Footer：深棕而非純黑 */
  --footer-bg: #2a2520;
  --footer-ink: #ece5d4;
  --footer-ink-dim: rgba(236, 229, 212, 0.6);
  --footer-line: rgba(236, 229, 212, 0.12);

  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #141617;
  --paper-warm: #1d2022;
  --paper-edge: #23272a;
  --ink: #e8e2d4;
  --ink-soft: #c9c3b4;
  --muted: #8a8678;
  --line: rgba(232, 226, 212, 0.1);
  --line-strong: rgba(232, 226, 212, 0.32);
  --hairline: rgba(232, 226, 212, 0.07);

  --seal: #c66a6a;
  --seal-ink: #d88a8a;

  /* Header：毛玻璃深色 */
  --nav-bg: rgba(20, 22, 23, 0.7);
  --nav-bg-fallback: rgba(20, 22, 23, 0.95);
  --nav-ink: #e8e2d4;
  --nav-ink-dim: rgba(232, 226, 212, 0.55);
  --nav-line: rgba(232, 226, 212, 0.1);
  --nav-field: rgba(255, 255, 255, 0.06);
  --nav-field-focus: rgba(255, 255, 255, 0.11);

  --dropdown-bg: #1a1d1f;
  --dropdown-line: rgba(232, 226, 212, 0.1);

  /* Footer：比主背景略淺的深棕青 */
  --footer-bg: #1a1d1f;
  --footer-ink: #e8e2d4;
  --footer-ink-dim: rgba(232, 226, 212, 0.55);
  --footer-line: rgba(232, 226, 212, 0.1);

  color-scheme: dark;
}

:root {
  --content-width: 1180px;
  --reading-width: 720px;
  --header-height: 56px;

  --serif: 'Iowan Old Style', 'Palatino Linotype', 'Noto Serif SC',
           'Source Han Serif SC', 'Songti SC', 'STSong', 'PingFang SC', serif;
  --sans:  'Helvetica Neue', 'PingFang SC', 'Hiragino Sans GB',
           'Noto Sans CJK SC', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.75;
  background: var(--paper);
  padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background .25s ease, color .25s ease;
}
main { flex: 1 0 auto; position: relative; z-index: 1; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--seal-ink); }

/* 觸控體驗統一 */
a, button, input, select, textarea,
.nav a, .site-header__nav a,
.theme-toggle, .mobile-search-toggle, .mobile-menu-toggle {
  -webkit-tap-highlight-color: rgba(17, 17, 17, 0.06);
  touch-action: manipulation;
}

/* iOS 長按圖片 callout 關閉；正文內容允許選取 */
img { -webkit-user-drag: none; -webkit-touch-callout: none; }
.reading__body, .post-body { -webkit-touch-callout: default; }

/* =========================================================
   頂部導航（毛玻璃）
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-height);
  background: var(--nav-bg-fallback);
  color: var(--nav-ink);
  z-index: 200;
  font-family: var(--sans);
  border-bottom: 1px solid var(--nav-line);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
}
/* 瀏覽器支援毛玻璃時使用半透明色，否則用實底 */
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .site-header { background: var(--nav-bg); }
}
.site-header__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.site-header__brand,
.site-header .logo {
  font-family: var(--serif);
  color: var(--nav-ink);
  font-size: 19px;
  letter-spacing: 0.18em;
  font-weight: 600;
  padding-right: 0.18em;
  flex: 0 0 auto;
}

/* 兼容舊的 .nav 寫法，並對齊新的 .site-header__nav */
.site-header__nav,
.nav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  align-items: center;
}
.site-header__nav a,
.nav a {
  padding: 6px 12px;
  border-radius: 3px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--nav-ink-dim);
  transition: background .15s, color .15s;
  border: none !important; /* 覆蓋舊 .nav a 的 underline */
}
.site-header__nav a:hover,
.nav a:hover {
  color: var(--nav-ink);
  background: var(--nav-field);
}
.site-header__nav a.active,
.nav a.active {
  color: var(--nav-ink);
  background: var(--nav-field-focus);
}

.site-header__actions,
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* --- 搜尋 --- */
.site-header__search,
.search-box {
  position: relative;
}
.site-header__search .icon {
  position: absolute;
  left: 12px; top: 50%; transform: translateY(-50%);
  width: 14px; height: 14px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.55;
}
.site-header__search .icon::after {
  content: '';
  position: absolute;
  top: 100%; left: 100%;
  width: 7px; height: 1.5px;
  background: currentColor;
  transform: translate(-3px, -3px) rotate(45deg);
  transform-origin: 0 0;
}
.site-header__search input,
.search-input {
  appearance: none;
  -webkit-appearance: none;
  background: var(--nav-field);
  border: 1px solid var(--nav-line);
  color: var(--nav-ink);
  font: inherit;
  font-family: var(--sans);
  font-size: 13px;
  padding: 7px 12px 7px 34px;
  border-radius: 999px;
  width: 220px;
  letter-spacing: 0.04em;
  transition: background .2s, border-color .2s, width .2s;
}
.search-input { padding: 7px 14px; }
.site-header__search input::placeholder,
.search-input::placeholder { color: var(--nav-ink-dim); }
.site-header__search input:focus,
.search-input:focus {
  outline: none;
  background: var(--nav-field-focus);
  border-color: var(--line-strong);
  width: 260px;
}

.search-results {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 340px;
  max-width: 420px;
  max-height: 440px;
  overflow: auto;
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-line);
  border-radius: 10px;
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.45);
  display: none;
  z-index: 210;
}
.search-results.is-open,
.search-results.active { display: block; }
.search-empty {
  padding: 18px 20px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
}
.search-hit,
.search-item {
  display: block;
  padding: 14px 18px;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
  transition: background .15s;
  text-decoration: none;
}
.search-hit:last-child,
.search-item:last-child { border-bottom: none; }
.search-hit:hover,
.search-item:hover { background: rgba(0, 0, 0, 0.04); color: var(--ink); }
[data-theme="dark"] .search-hit:hover,
[data-theme="dark"] .search-item:hover { background: rgba(255, 255, 255, 0.04); }

.search-hit__title,
.search-item-title {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}
.search-hit__meta,
.search-item-meta {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 4px;
}
.search-hit__snip,
.search-item-snippet {
  font-family: var(--serif);
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.6;
}
.search-hit mark {
  background: transparent;
  color: var(--seal);
  font-weight: 700;
}

/* --- 主題切換按鈕 --- */
.theme-toggle {
  appearance: none;
  -webkit-appearance: none;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--nav-line);
  background: var(--nav-field);
  color: var(--nav-ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: background .2s, border-color .2s, transform .2s;
}
.theme-toggle:hover {
  background: var(--nav-field-focus);
  border-color: var(--line-strong);
}
.theme-toggle:active { transform: scale(0.94); }
.theme-toggle svg { width: 16px; height: 16px; display: block; }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }
[data-theme="dark"] .theme-toggle .sun { display: block; }
[data-theme="dark"] .theme-toggle .moon { display: none; }

/* --- 手機專用：漢堡 + 搜尋按鈕 --- */
.mobile-search-toggle,
.mobile-menu-toggle {
  display: none;
  appearance: none;
  -webkit-appearance: none;
  width: 34px; height: 34px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--nav-line);
  background: var(--nav-field);
  color: var(--nav-ink);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .2s;
}
.mobile-search-toggle:active,
.mobile-menu-toggle:active { transform: scale(0.94); }
.mobile-search-toggle svg,
.mobile-menu-toggle svg {
  width: 18px; height: 18px;
  display: block; color: currentColor;
  flex: 0 0 auto;
}
.mobile-menu-toggle .mm-line {
  transition: transform 0.22s ease, opacity 0.15s ease;
  transform-origin: 12px 12px;
}
.site-header.mobile-menu-open .mobile-menu-toggle .mm-line-top {
  transform: translate(0, 5px) rotate(45deg);
}
.site-header.mobile-menu-open .mobile-menu-toggle .mm-line-mid { opacity: 0; }
.site-header.mobile-menu-open .mobile-menu-toggle .mm-line-bot {
  transform: translate(0, -5px) rotate(-45deg);
}

/* =========================================================
   共用排字
   ========================================================= */
.cap {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.kicker {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--seal);
  margin: 0 0 14px;
  font-weight: 600;
}
.pill,
.issue-pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  background: transparent;
}
.ghost-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
  transition: background .2s, color .2s;
}
.ghost-link:hover { background: var(--ink); color: var(--paper); }

/* =========================================================
   Section / 區段標題 / TOC
   ========================================================= */
.section,
.latest {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 64px 6vw 48px;
  border-top: 1px solid var(--line);
  width: 100%;
}
.section--flush,
.home-page .latest,
main > .section:first-child {
  border-top: none;
  padding-top: 56px;
}

.section__head,
.section-title {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
  margin-bottom: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.section__title,
.section-title h1,
.section-title h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: 0.05em;
  margin: 0;
}
.section-title p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.section__intro {
  max-width: 22em;
  color: var(--muted);
  margin: 0;
  font-size: 14px;
  text-align: right;
}
.section__more {
  margin-top: 40px;
  text-align: center;
  border-top: 1px solid var(--hairline);
  padding-top: 40px;
}

/* ---- TOC 目次列表（首頁、文章列表、期刊詳情共用） ---- */
.toc,
.post-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hairline);
  display: block; /* 覆蓋舊 grid */
}
.toc__row,
.post-card {
  display: grid;
  grid-template-columns: 64px 1fr 180px;
  gap: 28px;
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--hairline);
  transition: background .18s;
  position: relative;
}
.post-card { grid-template-columns: 1fr 180px; gap: 28px; }
.toc__row:hover,
.post-card:hover { background: rgba(0, 0, 0, 0.025); }
[data-theme="dark"] .toc__row:hover,
[data-theme="dark"] .post-card:hover { background: rgba(255, 255, 255, 0.03); }

.toc--tight .toc__row {
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 22px 0;
}

/* 沒有封面的文章列：把第三欄收掉，讓內容佔滿 */
.toc__row--no-cover {
  grid-template-columns: 64px 1fr;
}

.toc__num {
  font-family: var(--serif);
  font-size: 24px;
  color: var(--muted);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  text-align: right;
  padding-right: 8px;
}

.toc__body,
.post-card .content { min-width: 0; }

.toc__meta,
.post-card .card-meta {
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.post-card .card-meta small {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.toc__title,
.post-card h3 {
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.35;
  margin: 0 0 8px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.toc__title a,
.post-card h3 a {
  background-image: linear-gradient(var(--ink), var(--ink));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size .3s ease, color .2s;
}
.toc__title a:hover,
.post-card h3 a:hover { background-size: 100% 1px; color: var(--ink); }

.toc__excerpt,
.post-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.toc__thumb,
.post-card .image {
  display: block;
  width: 180px;
  height: 120px;
  overflow: hidden;
  background: var(--paper-edge);
  border: 1px solid var(--hairline);
  order: 99; /* 確保永遠在右邊 */
}
.toc__thumb img,
.post-card .image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease, filter .3s ease;
  filter: saturate(0.9);
}
.toc__row:hover .toc__thumb img,
.post-card:hover .image img { transform: scale(1.04); filter: saturate(1); }

/* =========================================================
   各列表/詳情頁通用
   ========================================================= */
.page-list,
.page-issue,
.page-about,
.page-post__main,
.list-page,
.issues-page,
.about,
.post-page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 56px 6vw 80px;
  width: 100%;
}

.page-head {
  padding-bottom: 32px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
}
.page-head .kicker { margin-bottom: 10px; }
.page-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(36px, 4.6vw, 56px);
  margin: 0 0 10px;
  letter-spacing: 0.06em;
}
.page-intro {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 32em;
}

/* =========================================================
   期刊：書本卡片
   ========================================================= */
.issue-shelf,
.issues-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px 48px;
}

.book,
.issue-card {
  position: relative;
  display: block;
  color: var(--ink);
  transition: transform .3s ease;
  background: transparent;
  border: none;
  padding: 0;
}
.book:hover,
.issue-card:hover { transform: translateY(-6px); color: var(--ink); }

.book__cover,
.issue-card .issue-cover {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--paper-warm);
  border: 1px solid var(--ink);
  box-shadow:
    2px 0 0 var(--ink-soft),
    4px 0 0 var(--paper-warm),
    5px 0 0 var(--ink),
    12px 20px 28px -12px rgba(0, 0, 0, 0.4);
  transition: box-shadow .3s ease;
  min-height: 0;
}
[data-theme="dark"] .book__cover,
[data-theme="dark"] .issue-card .issue-cover {
  border-color: var(--paper-edge);
  box-shadow:
    2px 0 0 #2a2e31,
    4px 0 0 var(--paper-warm),
    5px 0 0 var(--paper-edge),
    12px 20px 28px -12px rgba(0, 0, 0, 0.7);
}
.book:hover .book__cover,
.issue-card:hover .issue-cover {
  box-shadow:
    2px 0 0 var(--ink-soft),
    4px 0 0 var(--paper-warm),
    5px 0 0 var(--ink),
    16px 28px 36px -12px rgba(0, 0, 0, 0.45);
}
[data-theme="dark"] .book:hover .book__cover,
[data-theme="dark"] .issue-card:hover .issue-cover {
  box-shadow:
    2px 0 0 #2a2e31,
    4px 0 0 var(--paper-warm),
    5px 0 0 var(--paper-edge),
    16px 28px 36px -12px rgba(0, 0, 0, 0.8);
}
.book__cover img,
.issue-card .issue-cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: contrast(1.04) saturate(0.96);
}
.book__cover::before,
.issue-card .issue-cover::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 14px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.22), transparent);
  pointer-events: none;
  z-index: 2;
}

.book__meta,
.issue-card .issue-body {
  margin-top: 28px;
  text-align: center;
  display: grid;
  gap: 6px;
}
.book__id {
  margin: 0;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.book__title,
.issue-card .issue-body h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: 0.08em;
}
.book__theme,
.issue-card .issue-body p:first-of-type {
  margin: 0;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--seal);
  letter-spacing: 0.2em;
}
.book__count,
.issue-card .issue-count {
  margin: 6px 0 0;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.book__count strong,
.issue-card .issue-count strong {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 14px;
  margin: 0 3px;
}

/* =========================================================
   期刊詳情頁
   ========================================================= */
.issue-hero__crumbs { margin-bottom: 28px; }
.issue-hero__crumbs a {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .2s, border-color .2s;
}
.issue-hero__crumbs a:hover {
  color: var(--ink);
  border-bottom-color: var(--line-strong);
}

.issue-hero__grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: start;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}
.issue-hero__cover {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--paper-warm);
  border: 1px solid var(--ink);
  box-shadow:
    2px 0 0 var(--ink-soft),
    4px 0 0 var(--paper-warm),
    5px 0 0 var(--ink),
    14px 22px 32px -12px rgba(0, 0, 0, 0.4);
}
[data-theme="dark"] .issue-hero__cover {
  border-color: var(--paper-edge);
  box-shadow:
    2px 0 0 #2a2e31,
    4px 0 0 var(--paper-warm),
    5px 0 0 var(--paper-edge),
    14px 22px 32px -12px rgba(0, 0, 0, 0.7);
}
.issue-hero__cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: contrast(1.04) saturate(0.96);
}
.issue-hero__cover::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 14px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.22), transparent);
}
.issue-hero__body .kicker { margin-bottom: 14px; }
.issue-hero__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(40px, 5vw, 64px);
  margin: 0 0 12px;
  letter-spacing: 0.08em;
}
.issue-hero__theme {
  margin: 0 0 28px;
  color: var(--seal);
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.3em;
}
.issue-hero__facts {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px 24px;
}
.issue-hero__facts > div {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.issue-hero__facts dt {
  margin: 0;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.issue-hero__facts dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
}
.issue-hero__editor {
  margin: 0 0 48px;
  padding: 20px 28px;
  background: var(--paper-warm);
  border-left: 3px solid var(--seal);
  font-family: var(--serif);
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}
.issue-hero__editor p { margin: 0 0 10px; font-style: italic; }
.issue-hero__editor footer {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  text-transform: uppercase;
  font-style: normal;
}

.issue-toc__head { margin-bottom: 16px; }
.issue-toc__head .cap { display: block; margin-bottom: 8px; }
.issue-toc__head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 28px;
  margin: 0;
  letter-spacing: 0.04em;
}

/* =========================================================
   文章閱讀頁
   ========================================================= */
.page-post { background: var(--paper); }

.reading,
.post-article {
  max-width: var(--reading-width);
  margin: 0 auto;
  width: 100%;
}
.reading__head,
.post-hero {
  margin-bottom: 44px;
}
.reading__date,
.post-hero .post-meta {
  display: block;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.post-hero .post-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.reading__title,
.post-hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(30px, 3.8vw, 40px);
  line-height: 1.35;
  letter-spacing: 0.02em;
  margin: 0 0 14px;
  color: var(--ink);
  max-width: none;
}
.post-excerpt {
  margin: 0 0 14px;
  color: var(--muted);
  font-style: italic;
  font-size: 17px;
}
.post-cover {
  margin: 20px 0 0;
  height: auto;
  border: 1px solid var(--hairline);
  overflow: hidden;
}
.post-cover img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.reading__body,
.post-body {
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.95;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.reading__body > p,
.reading__body > h2,
.reading__body > h3,
.reading__body > blockquote,
.reading__body > figure,
.reading__body > ul,
.reading__body > ol,
.reading__body > table,
.reading__body > pre,
.reading__body > hr,
.post-body > p,
.post-body > h2,
.post-body > h3,
.post-body > blockquote,
.post-body > figure,
.post-body > ul,
.post-body > ol,
.post-body > table,
.post-body > pre,
.post-body > hr {
  margin: 0 0 1.3em;
}
.reading__body > p,
.post-body > p {
  text-align: justify;
  text-justify: inter-ideograph;
}
.reading__body h2,
.post-body h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 26px;
  margin-top: 2em;
  color: var(--ink);
  letter-spacing: 0.04em;
}
.reading__body h3,
.post-body h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  margin-top: 1.6em;
  color: var(--ink);
  letter-spacing: 0.04em;
}
.reading__body blockquote,
.post-body blockquote {
  padding: 0 0 0 20px;
  border-left: 2px solid var(--line-strong);
  color: var(--ink-soft);
  font-style: normal;
}
.reading__body blockquote p,
.post-body blockquote p { margin: 0 0 0.6em; }
.reading__body blockquote p:last-child,
.post-body blockquote p:last-child { margin-bottom: 0; }

.reading__body code,
.post-body code {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.92em;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(0,0,0,0.05);
}
[data-theme="dark"] .reading__body code,
[data-theme="dark"] .post-body code { background: rgba(255,255,255,0.08); }

.reading__body pre,
.post-body pre {
  overflow: auto;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: var(--paper-warm);
  color: var(--ink);
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 14px;
  line-height: 1.75;
  padding: 18px;
  white-space: pre-wrap;
  word-break: break-word;
}
.reading__body pre code,
.post-body pre code {
  display: block;
  padding: 0;
  background: transparent;
  border-radius: 0;
  font-size: inherit;
}
.reading__body hr,
.post-body hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2em 0;
}
.reading__body del,
.post-body del { color: var(--muted); }
.reading__body table,
.post-body table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
}
.reading__body th,
.reading__body td,
.post-body th,
.post-body td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  vertical-align: top;
}
.reading__body th,
.post-body th {
  background: var(--paper-warm);
  color: var(--ink);
  font-weight: 700;
}
.reading__body .task-list-item,
.post-body .task-list-item {
  list-style: none;
}
.reading__body .task-list-item input,
.post-body .task-list-item input {
  margin-right: 8px;
  transform: translateY(1px);
}
.reading__body mark,
.post-body mark {
  background: rgba(194, 151, 64, 0.22);
  color: inherit;
  padding: 0.04em 0.18em;
  border-radius: 3px;
}
.md-color--red { color: #b13d3d; }
.md-color--blue { color: #2f5f9f; }
.md-color--green { color: #3f7550; }
.md-color--gold { color: #9a6a18; }
.md-color--gray { color: var(--muted); }
.md-color--seal { color: var(--seal); }
[data-theme="dark"] .md-color--red { color: #e18383; }
[data-theme="dark"] .md-color--blue { color: #8fb4f3; }
[data-theme="dark"] .md-color--green { color: #8fcf9e; }
[data-theme="dark"] .md-color--gold { color: #d8b15c; }

.reading__body a,
.post-body a {
  color: var(--seal);
  border-bottom: 1px solid currentColor;
}

.reading__figure,
.post-body figure,
.post-image {
  margin: 1.6em 0;
}
.reading__figure img,
.post-body figure img,
.post-image img {
  width: 100%;
  height: auto;
  border: 1px solid var(--hairline);
  background: var(--paper-edge);
}
.reading__figure figcaption,
.post-body figcaption,
.post-image figcaption {
  margin-top: 10px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* 音訊區塊 */
.post-audio {
  margin: 1.6em 0;
  padding: 18px 20px;
  background: var(--paper-warm);
  border: 1px solid var(--hairline);
  border-radius: 10px;
}
.post-audio .post-audio-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 10px;
}
.post-audio audio {
  width: 100%;
}

.reading__foot,
.post-body + .more,
.more-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.reading__foot a { color: var(--ink); border-bottom: 1px solid var(--line-strong); padding-bottom: 1px; }

/* =========================================================
   關於頁
   ========================================================= */
.about-shell {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-main,
.about-card.about-main { /* 兼容 SSR */
  background: transparent;
  border: none;
  padding: 0;
}
.about-main h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(36px, 4.6vw, 54px);
  margin: 0 0 24px;
  letter-spacing: 0.06em;
}
.about-kicker {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--seal);
  margin: 0 0 14px;
  font-weight: 600;
}
.about-lead {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.95;
  color: var(--ink);
  margin: 0 0 20px;
}
.about-detail {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
  margin: 0;
}
.about-side,
.about-card.about-side {
  background: var(--paper-warm);
  border: 1px solid var(--line);
  padding: 28px 28px 22px;
}
.about-side h2 {
  margin: 0 0 18px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.about-facts { margin: 0; padding: 0; display: grid; gap: 16px; list-style: none; }
.about-facts > div,
.about-facts .about-fact {
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  display: grid;
  gap: 4px;
}
.about-facts > div:first-child,
.about-facts .about-fact:first-child { border-top: none; padding-top: 0; }
.about-facts dt,
.about-fact .meta-label {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin: 0;
}
.about-facts dd,
.about-fact .meta-value {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
}
.about-mail {
  display: inline-block;
  margin-top: 16px;
  padding: 8px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
}
.about-mail:hover { background: var(--ink); color: var(--paper); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  flex-shrink: 0;
  margin-top: 0;
  padding: 28px 6vw 18px;
  background: var(--footer-bg);
  color: var(--footer-ink);
  border-top: 1px solid var(--footer-line);
}
.site-footer__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1.4fr 1fr;
  gap: 28px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--footer-line);
}
.site-footer__col { min-width: 0; }
.site-footer__brand {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.18em;
  color: var(--footer-ink);
  font-weight: 600;
  padding-right: 0.18em;
}
.site-footer__desc {
  margin: 0;
  color: var(--footer-ink);
  opacity: 0.72;
  font-size: 11px;
  line-height: 1.65;
  max-width: 28em;
}
.site-footer .cap {
  color: var(--footer-ink-dim);
  margin-bottom: 8px;
  display: block;
}
.site-footer p {
  margin: 0 0 6px;
  color: var(--footer-ink);
  opacity: 0.88;
  font-size: 13px;
  line-height: 1.65;
}
.site-footer a {
  color: var(--footer-ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: border-color .2s, opacity .2s;
}
.site-footer a:hover {
  color: var(--footer-ink);
  border-bottom-color: var(--footer-ink-dim);
}

/* 社群圖示 */
.social-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 2px;
}
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 1px solid var(--footer-line);
  color: var(--footer-ink);
  opacity: 0.78;
  transition: opacity .2s, background .2s, border-color .2s, transform .2s;
  padding: 0;
}
.social-link svg { width: 15px; height: 15px; }
.social-link:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--footer-ink-dim);
  transform: translateY(-1px);
  border-bottom: 1px solid var(--footer-ink-dim); /* override generic a:hover */
}

/* Footer 底部版權 */
.site-footer__copy,
.site-footer #siteFooterText {
  max-width: var(--content-width);
  margin: 12px auto 0;
  color: var(--footer-ink-dim);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-align: center;
}

/* =========================================================
   舊版相容：移除不再用的元件殘影
   ========================================================= */
.hero, .hero-magazine, .hero-frame,
.hero-backdrop, .hero-copy, .hero-book,
.book-object, .book-spine, .book-shadow, .book-cover-copy,
.issue-book-visual, .issue-book-object, .issue-book-link, .issue-book-shadow,
.issue-cover-copy, .issue-post, .issue-posts, .issue-expand, .issue-meta,
.issue-note, .issue-actions, .issue-link, .issue-date,
.home-page::before, body::before,
.site-loading,
.about-kicker {
  /* 特別處理見下 */
}
/* 移除整頁 hero：如果頁面還掛著 hero 標籤，把它隱藏不顯示 */
.hero-magazine,
.hero-backdrop {
  display: none !important;
}
.hero-frame--book-only { display: none !important; }
/* 首頁保留給 latest 區，不要 hero 推內容下滑 */
.home-page main { padding-top: 0; }
.site-loading #homeHero,
.site-loading #latest { visibility: visible !important; }
body::before { display: none !important; }

/* =========================================================
   響應式
   ========================================================= */
@media (max-width: 1060px) {
  .issue-shelf,
  .issues-grid { grid-template-columns: repeat(2, 1fr); }
  .toc__row,
  .post-card { grid-template-columns: 52px 1fr 140px; gap: 20px; }
  .toc__row--no-cover { grid-template-columns: 52px 1fr; }
  .post-card { grid-template-columns: 1fr 140px; }
  .toc__thumb,
  .post-card .image { width: 140px; height: 100px; }
  .issue-hero__grid { grid-template-columns: 260px 1fr; gap: 36px; }
  .about-shell { grid-template-columns: 1fr; gap: 32px; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }

  .site-header__inner { padding: 0 4vw; gap: 10px; }

  /* 桌面 nav 和搜尋藏起來，用手機按鈕取代 */
  .site-header__nav,
  .nav { display: none; }
  .site-header__search,
  .search-box { display: none; }

  .mobile-search-toggle,
  .mobile-menu-toggle { display: inline-flex; }

  /* 展開選單：全寬抽屜在 header 下方 */
  .site-header.mobile-menu-open .site-header__nav,
  .site-header.mobile-menu-open .nav {
    display: flex;
    position: absolute;
    top: calc(100% + 6px);
    left: 4vw;
    right: 4vw;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 8px;
    margin: 0;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--paper);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    backdrop-filter: saturate(160%) blur(14px);
    box-shadow: 0 10px 24px -10px rgba(0,0,0,0.25);
    z-index: 80;
  }
  @supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
    .site-header.mobile-menu-open .site-header__nav,
    .site-header.mobile-menu-open .nav {
      background: rgba(245, 241, 232, 0.92);
    }
    [data-theme="dark"] .site-header.mobile-menu-open .site-header__nav,
    [data-theme="dark"] .site-header.mobile-menu-open .nav {
      background: rgba(20, 22, 23, 0.92);
    }
  }
  .site-header.mobile-menu-open .site-header__nav a,
  .site-header.mobile-menu-open .nav a {
    padding: 12px 14px;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-radius: 10px;
    letter-spacing: 0.06em;
    font-size: 14px;
    text-transform: none;
    color: var(--ink);
  }
  .site-header.mobile-menu-open .site-header__nav a:hover,
  .site-header.mobile-menu-open .site-header__nav a.active,
  .site-header.mobile-menu-open .nav a:hover,
  .site-header.mobile-menu-open .nav a.active {
    background: var(--paper-warm);
    color: var(--ink);
  }

  /* 展開搜尋：input 本身有實底，不再套外層卡片 */
  .site-header.mobile-search-open .site-header__search,
  .site-header.mobile-search-open .search-box {
    display: block;
    position: absolute;
    top: calc(100% + 6px);
    left: 4vw;
    right: 4vw;
    z-index: 81;
    padding: 0;
    border: none;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }
  .site-header.mobile-search-open .site-header__search input,
  .site-header.mobile-search-open .search-input {
    width: 100%;
    font-size: 16px;
    padding: 14px 18px 14px 42px;
    background: var(--paper);
    border: 1px solid var(--line);
    color: var(--ink);
    border-radius: 999px;
    box-shadow: 0 10px 24px -12px rgba(0, 0, 0, 0.25);
  }
  @supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
    .site-header.mobile-search-open .site-header__search input,
    .site-header.mobile-search-open .search-input {
      background: rgba(245, 241, 232, 0.96);
      -webkit-backdrop-filter: saturate(160%) blur(14px);
      backdrop-filter: saturate(160%) blur(14px);
    }
    [data-theme="dark"] .site-header.mobile-search-open .site-header__search input,
    [data-theme="dark"] .site-header.mobile-search-open .search-input {
      background: rgba(20, 22, 23, 0.96);
    }
  }
  .site-header.mobile-search-open .search-input {
    padding: 14px 18px;
  }
  .site-header.mobile-search-open .site-header__search input::placeholder,
  .site-header.mobile-search-open .search-input::placeholder {
    color: var(--muted);
  }
  .site-header.mobile-search-open .site-header__search .icon {
    top: 50%;
    left: 16px;
    color: var(--muted);
    opacity: 1;
  }
  .search-results {
    position: fixed;
    top: calc(var(--header-height) + 64px);
    left: 4vw; right: 4vw;
    min-width: 0;
    max-width: none;
  }

  .section,
  .latest { padding: 40px 4vw; }
  .section__head,
  .section-title { grid-template-columns: 1fr; gap: 6px; }
  .section__intro { text-align: left; }

  .toc__row,
  .post-card { grid-template-columns: 38px 1fr; gap: 14px; padding: 18px 0; }
  .post-card { grid-template-columns: 1fr; gap: 10px; padding: 20px 0; }
  .toc__thumb,
  .post-card .image { display: none; }
  .toc__num { font-size: 20px; }
  .toc__title,
  .post-card h3 { font-size: 20px; }

  .issue-shelf,
  .issues-grid { grid-template-columns: 1fr; gap: 48px; }
  .issue-hero__grid { grid-template-columns: 1fr; gap: 24px; }
  .issue-hero__cover { max-width: 260px; }

  .page-post__main,
  .post-page { padding: 40px 4vw 60px; }
  .reading__body,
  .post-body { font-size: 18px; line-height: 1.9; }
  .reading__title,
  .post-hero h1 { font-size: clamp(26px, 7vw, 34px); }

  .about-side { padding: 22px 20px; }

  .site-footer { padding: 22px 4vw 16px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 18px; padding-bottom: 16px; }
  .site-footer__copy { text-align: left; }
}

/* iPhone 瀏海安全島 */
@supports (padding: env(safe-area-inset-top)) {
  .site-header__inner {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
  }
  @media (max-width: 760px) {
    body { padding-top: calc(var(--header-height) + env(safe-area-inset-top)); }
    .site-header {
      padding-top: env(safe-area-inset-top);
      height: calc(var(--header-height) + env(safe-area-inset-top));
    }
  }
  .site-footer { padding-bottom: max(20px, calc(20px + env(safe-area-inset-bottom))); }
}

/* 焦點環 */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--seal);
  outline-offset: 3px;
}

/* 尊重減少動態喜好 */
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}