/*
Theme Name:  日日知研
Theme URI:   https://dailyresearch.cc
Description: 將國際科學文獻化為日常健康智慧 — 和風配色、明朝體字型、學術節制美學
Author:      DCParty
Version:     2.0.0
Text Domain: dailyresearch
*/

/* ── Design Tokens（和風配色）──────────────────────────────────────────────── */
:root {
  --color-bg:        #f3efe5;    /* 生成り kijiro — 未漂白絹布 */
  --color-surface:   #faf7f1;    /* 白練 shironeri — 暖白 */
  --color-border:    #d8d0c0;    /* 和紙線 */
  --color-text:      #1b1713;    /* 墨 sumi */
  --color-text-2:    #38302a;    /* 焦茶 kogecha */
  --color-muted:     #7a7060;    /* 鼠 nezumi */
  --color-faint:     #b5aa99;    /* 砂色 suna */
  --color-accent:    #2c4a7c;    /* 縹 hanada — 傳統日本藍 */
  --color-accent-lt: #e8edf7;    /* 淺縹 */
  --color-vermilion: #8b3a2a;    /* 朱色 shu — 第二強調 */
  --color-footer-bg: #2c2318;    /* 深焦茶 — footer 專用 */
  --color-white:     #ffffff;

  --font-brand:  "Shippori Mincho", serif;               /* 品牌名稱專用 */
  --font-serif:  "Noto Serif TC", Georgia, serif;        /* 標題與內文 */
  --font-sans:   "Noto Sans TC", "PingFang TC", sans-serif;

  --radius-sm:   3px;
  --radius-md:   6px;
  --radius-lg:   12px;

  --shadow-sm:   0 1px 3px rgba(27,23,19,.07);
  --shadow-md:   0 4px 16px rgba(27,23,19,.09);

  --max-content: 720px;
  --max-wide:    1080px;
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent-2); }

/* ── Reading Progress Bar ───────────────────────────────────────────────────── */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
  z-index: 9999;
  transition: width .1s linear;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: .05em;
}
.site-logo span { color: var(--color-accent); }
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  font-size: .9rem;
  color: var(--color-muted);
  font-weight: 500;
  letter-spacing: .02em;
}
.site-nav a:hover { color: var(--color-accent); }

/* ── Hero ────────────────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
  padding: 72px 24px 64px;
  text-align: center;
}
.hero-eyebrow {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 16px;
}
.hero p {
  font-size: 1.05rem;
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Section Layout ──────────────────────────────────────────────────────────── */
.container {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 56px 0; }
.section-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-title::before {
  content: "";
  display: inline-block;
  width: 4px; height: 20px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* ── Article Cards ───────────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.card-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-surface);
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 20px; }
.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  color: var(--color-muted);
  margin-bottom: 10px;
}
.card-tag {
  background: var(--color-surface);
  color: var(--color-accent);
  padding: 2px 8px;
  border-radius: 100px;
  font-size: .72rem;
  font-weight: 600;
}
.card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: 8px;
}
.card-excerpt {
  font-size: .88rem;
  color: var(--color-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Single Article ──────────────────────────────────────────────────────────── */
.single-wrap {
  max-width: var(--max-content);
  margin: 48px auto;
  padding: 0 24px;
}
.single-header { margin-bottom: 36px; }
.single-category {
  color: var(--color-accent);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .05em;
  margin-bottom: 12px;
  display: block;
}
.single-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-text);
  margin-bottom: 16px;
}
.single-meta {
  font-size: .82rem;
  color: var(--color-muted);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 文獻重點 Panel */
.literature-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 36px 0;
}
.literature-panel h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.literature-panel ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.literature-panel li {
  font-size: .9rem;
  padding-left: 18px;
  position: relative;
  line-height: 1.7;
}
.literature-panel li::before {
  content: "▸";
  color: var(--color-accent);
  position: absolute;
  left: 0;
}

/* 文章內文排版 */
.entry-content { font-family: var(--font-serif); font-size: 1.02rem; }
.entry-content h2 {
  font-size: 1.3rem; margin: 2em 0 .8em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.entry-content h3 { font-size: 1.1rem; margin: 1.8em 0 .6em; }
.entry-content p  { margin-bottom: 1.4em; }
.entry-content blockquote {
  border-left: 3px solid var(--color-highlight);
  padding: 12px 20px;
  margin: 1.5em 0;
  background: var(--color-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-muted);
  font-style: italic;
}
.entry-content a { border-bottom: 1px dotted var(--color-accent); }

/* 精選標籤 */
.featured-badge {
  display: inline-block;
  background: #8b3a2a;
  color: #fff;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .08em;
  padding: 2px 8px;
  border-radius: 2px;
  vertical-align: middle;
  margin-left: 8px;
}

/* 專題系列導航 */
.series-nav {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 48px 0 36px;
}
.series-nav-label {
  font-size: .8rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}
.series-nav-label a { color: var(--color-accent); font-weight: 600; }
.series-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.series-nav-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: .88rem;
  line-height: 1.6;
}
.series-num {
  font-size: .68rem;
  color: var(--color-muted);
  min-width: 20px;
  font-variant-numeric: tabular-nums;
}
.series-nav-item.current { font-weight: 700; color: var(--color-text); }
.series-title-current { color: var(--color-text); }

/* 首頁專題區塊 */
.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.series-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  padding: 20px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  cursor: pointer;
  transition: box-shadow .2s;
}
.series-card:hover { box-shadow: var(--shadow-md); }
.series-card-count {
  font-size: .7rem;
  color: var(--color-muted);
  margin-bottom: 8px;
  letter-spacing: .06em;
}
.series-card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}
.series-card-desc {
  font-size: .8rem;
  color: var(--color-muted);
  line-height: 1.65;
}

/* 結論先行框 */
.conclusion-box {
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  background: var(--color-white);
  padding: 22px 26px;
  margin-bottom: 28px;
}
.conclusion-label {
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.conclusion-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.75;
  color: var(--color-text);
}

/* 來源 badge（meta 列） */
.source-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #e8f0eb;
  color: var(--color-accent);
  border: 1px solid #c2d9c8;
  border-radius: 3px;
  padding: 4px 10px;
  font-size: .72rem;
  font-weight: 500;
  text-decoration: none;
  transition: background .15s;
}
.source-badge:hover { background: #d8ecdd; }

/* 原始論文來源框 */
.source-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 40px;
  font-size: .82rem;
  color: var(--color-muted);
}
.source-box strong { color: var(--color-text); }

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-footer-bg);
  border-top: none;
  color: #a09080;
  text-align: center;
  padding: 48px 24px 36px;
  font-size: .82rem;
  margin-top: 80px;
}
.site-footer a { color: #a09080; }
.site-footer a:hover { color: #e8e0d0; }
.site-footer .footer-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: #e8e0d0;
  margin-bottom: 8px;
}
.site-footer hr {
  border: none;
  border-top: 1px solid #4a3d30;
  margin: 20px auto;
  max-width: 120px;
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .site-nav { display: none; }
  .hero { padding: 48px 20px 40px; }
  .card-grid { grid-template-columns: 1fr; }
  .single-wrap { padding: 0 16px; }
}

/* ── Hero Image ──────────────────────────────────── */
.hero-image { position:relative; height:520px; overflow:hidden; background-color:#1b1713; display:flex; align-items:flex-end; width:100%; }
.hero-image-bg { position:absolute; inset:0; background-size:cover; background-position:center; opacity:.72; transition:transform 8s ease; }
.hero-image:hover .hero-image-bg { transform:scale(1.04); }
.hero-image-overlay { position:absolute; inset:0; background:linear-gradient(to top, rgba(27,23,19,.92) 0%, rgba(27,23,19,.4) 55%, transparent 100%); }
.hero-image .container { position:relative; z-index:1; width:100%; max-width:var(--max-wide); margin:0 auto; padding:0 24px 48px; }
.hero-image-content { max-width:680px; }
.hero-cat { display:inline-block; background:var(--color-accent); color:#fff; font-size:.72rem; font-weight:600; letter-spacing:.1em; padding:3px 12px; border-radius:100px; margin-bottom:14px; }
.hero-title { font-family:var(--font-serif); font-size:clamp(1.6rem,3.5vw,2.4rem); font-weight:700; line-height:1.4; color:#fff; margin-bottom:12px; }
.hero-title a { color:#fff; }
.hero-title a:hover { color:rgba(255,255,255,.85); }
.hero-desc { font-size:1rem; color:rgba(255,255,255,.8); line-height:1.7; margin-bottom:20px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.hero-foot { display:flex; align-items:center; gap:20px; }
.hero-foot time { font-size:.8rem; color:rgba(255,255,255,.6); }
.hero-read-btn { display:inline-block; background:var(--color-accent); color:#fff; padding:9px 22px; border-radius:6px; font-size:.85rem; font-weight:600; transition:background .15s; }
.hero-read-btn:hover { background:#3b6cbd; color:#fff; }

/* ── Tag Bar ──────────────────────────────────────── */
.tag-bar { background:var(--color-white); border-bottom:1px solid var(--color-border); position:sticky; top:64px; z-index:90; width:100%; }
.tag-bar-inner { max-width:var(--max-wide); margin:0 auto; padding:0 24px; display:flex !important; flex-direction:row !important; gap:0; overflow-x:auto; scrollbar-width:none; white-space:nowrap; }
.tag-bar-inner::-webkit-scrollbar { display:none; }
.tag-bar a { display:block; padding:13px 16px; font-size:.82rem; color:var(--color-muted); font-weight:500; border-bottom:2px solid transparent; white-space:nowrap; transition:all .15s; }
.tag-bar a:hover { color:var(--color-accent); }
.tag-bar a.active { color:var(--color-accent); border-bottom-color:var(--color-accent); font-weight:600; }

/* ── Magazine Grid ────────────────────────────────── */
.magazine-grid { display:grid; grid-template-columns:3fr 2fr; gap:24px; }
.magazine-side { display:flex; flex-direction:column; gap:16px; }
.card-thumb-big { aspect-ratio:16/9; }
.card-title-big { font-size:1.2rem; }
.card-side { display:flex; flex-direction:row; gap:0; overflow:hidden; }
.card-thumb-side { width:120px; min-width:120px; aspect-ratio:1/1; flex-shrink:0; }
.card-thumb-side img { width:100%; height:100%; object-fit:cover; }
.card-side .card-body { padding:14px 16px; }
.card-side .card-title { font-size:.9rem; }
.card-side .card-meta { margin-bottom:6px; }

/* ── Search Bar ───────────────────────────────────── */
.search-toggle { background:none; border:none; cursor:pointer; color:var(--color-muted); font-size:1.1rem; padding:4px 8px; transition:color .15s; line-height:1; }
.search-toggle:hover { color:var(--color-accent); }
.search-bar { position:absolute; top:64px; left:0; right:0; background:var(--color-white); border-bottom:1px solid var(--color-border); padding:14px 24px; z-index:200; box-shadow:var(--shadow-md); }
.search-bar form { max-width:var(--max-wide); margin:0 auto; display:flex; gap:10px; }
.search-bar input { flex:1; padding:10px 16px; border:1px solid var(--color-border); border-radius:6px; font-size:.95rem; background:var(--color-surface); color:var(--color-text); font-family:var(--font-sans); }
.search-bar input:focus { outline:none; border-color:var(--color-accent); }
.search-bar button[type=submit] { background:var(--color-accent); color:#fff; border:none; padding:10px 20px; border-radius:6px; font-size:.9rem; cursor:pointer; }

/* ── Share Buttons ────────────────────────────────── */
.share-buttons { display:flex; align-items:center; gap:8px; flex-wrap:wrap; margin:20px 0 28px; }
.share-label { font-size:.8rem; color:var(--color-muted); }
.share-btn { display:inline-flex; align-items:center; gap:5px; padding:7px 15px; border-radius:6px; font-size:.8rem; font-weight:600; text-decoration:none; transition:opacity .15s; color:#fff; }
.share-btn:hover { opacity:.85; color:#fff; }
.share-btn-line { background:#06C755; }
.share-btn-fb { background:#1877F2; }
.share-btn-x { background:#000; letter-spacing:.02em; }

/* ── Social Copy Section ──────────────────────────── */
.social-copy-section { border:1px solid var(--color-border); border-radius:var(--radius-lg); overflow:hidden; margin:40px 0; }
.social-copy-header { display:flex; align-items:center; justify-content:space-between; padding:12px 20px; background:var(--color-surface); border-bottom:1px solid var(--color-border); font-size:.85rem; font-weight:600; color:var(--color-text); gap:12px; flex-wrap:wrap; }
.social-copy-tabs { display:flex; gap:4px; }
.social-copy-tabs button { padding:6px 14px; border:1px solid var(--color-border); border-radius:6px; background:none; font-size:.78rem; cursor:pointer; color:var(--color-muted); transition:all .15s; }
.social-copy-tabs button.active { background:var(--color-accent); color:#fff; border-color:var(--color-accent); font-weight:600; }
.social-copy-body { padding:20px; }
.social-pane pre { font-family:var(--font-sans); font-size:.85rem; line-height:1.8; color:var(--color-text-2); white-space:pre-wrap; word-break:break-all; background:var(--color-bg); padding:16px; border-radius:6px; border:1px solid var(--color-border); margin-bottom:12px; }
.copy-btn { display:inline-flex; align-items:center; gap:6px; background:var(--color-accent); color:#fff; padding:8px 18px; border-radius:6px; font-size:.82rem; font-weight:600; cursor:pointer; border:none; transition:background .15s; }
.copy-btn:hover { background:#3b6cbd; }

/* ── Related Articles ─────────────────────────────── */
.related-articles { margin-top:56px; padding-top:36px; border-top:2px solid var(--color-border); }
.related-articles h3 { font-family:var(--font-serif); font-size:1.1rem; color:var(--color-text); margin-bottom:24px; display:flex; align-items:center; gap:8px; }
.related-articles h3::before { content:""; display:inline-block; width:4px; height:18px; background:var(--color-accent); border-radius:2px; }
.related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }

/* ── Responsive updates ───────────────────────────── */
@media(max-width:768px){
  .hero-image { height:360px; }
  .hero-title { font-size:1.4rem; }
  .hero-desc { display:none; }
  .magazine-grid { grid-template-columns:1fr; }
  .card-side { flex-direction:column; }
  .card-thumb-side { width:100%; aspect-ratio:16/9; }
  .related-grid { grid-template-columns:1fr; gap:14px; }
  .social-copy-header { flex-direction:column; align-items:flex-start; }
  .search-bar { padding:12px 16px; }
}

/* ── Dark Mode ────────────────────────────────────── */
html.dark {
  --color-bg:        #0f0f11;
  --color-surface:   #17171a;
  --color-border:    #2c2c31;
  --color-text:      #f0f0f2;
  --color-text-2:    #c8c8d0;
  --color-muted:     #9898a6;
  --color-faint:     #636370;
  --color-accent:    #5b84c4;
  --color-accent-lt: #1e2a3d;
  --color-white:     #17171a;
  --color-footer-bg: #0a0a0c;
  --shadow-sm:       0 1px 3px rgba(0,0,0,.3);
  --shadow-md:       0 4px 16px rgba(0,0,0,.4);
}
html.dark .site-header { background:#17171a; }
html.dark .tag-bar { background:#17171a; }
html.dark .card { background:#17171a; }
html.dark .hero-image-bg { opacity:.5; }
html.dark img { filter: brightness(.9); }
.darkmode-toggle { background:none; border:none; cursor:pointer; color:var(--color-muted); padding:4px 8px; transition:color .15s; line-height:1; }
.darkmode-toggle:hover { color:var(--color-accent); }

/* ── News Ticker ──────────────────────────────────── */
.news-ticker { background:var(--color-accent); display:flex; align-items:center; height:36px; overflow:hidden; }
.ticker-label { background:var(--color-vermilion); color:#fff; font-size:.72rem; font-weight:700; letter-spacing:.08em; padding:0 14px; height:100%; display:flex; align-items:center; white-space:nowrap; flex-shrink:0; }
.ticker-track { flex:1; overflow:hidden; }
.ticker-inner { display:flex; gap:0; animation:ticker-scroll 30s linear infinite; width:max-content; }
.ticker-inner:hover { animation-play-state:paused; }
.ticker-item { display:inline-flex; align-items:center; gap:6px; color:rgba(255,255,255,.9); font-size:.78rem; padding:0 28px; white-space:nowrap; transition:color .15s; }
.ticker-item:hover { color:#fff; }
.ticker-cat { background:rgba(255,255,255,.2); border-radius:100px; padding:1px 7px; font-size:.68rem; }
@keyframes ticker-scroll { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

/* ── Stats Bar ────────────────────────────────────── */
.stats-bar { background:var(--color-surface); border-bottom:1px solid var(--color-border); padding:18px 24px; width:100%; }
.stats-bar-inner { max-width:var(--max-wide); margin:0 auto; display:flex !important; flex-direction:row !important; align-items:center !important; justify-content:center; gap:48px; flex-wrap:nowrap; }
.stat-item { display:flex !important; flex-direction:column !important; align-items:center !important; gap:4px; flex-shrink:0; }
.stat-num { font-family:var(--font-serif); font-size:1.8rem; font-weight:700; color:var(--color-accent); line-height:1; display:block !important; }
.stat-label { font-size:.75rem; color:var(--color-muted); letter-spacing:.04em; display:block !important; white-space:nowrap; }
.stat-divider { width:1px; height:36px; background:var(--color-border); flex-shrink:0; }

/* ── NEW Badge ────────────────────────────────────── */
.new-badge { display:inline-block; background:#e53e3e; color:#fff; font-size:.6rem; font-weight:700; letter-spacing:.1em; padding:1px 6px; border-radius:2px; vertical-align:middle; animation:pulse-new 2s infinite; }
@keyframes pulse-new { 0%,100%{opacity:1} 50%{opacity:.7} }

/* ── Hot List ─────────────────────────────────────── */
.hot-list { list-style:none; display:flex; flex-direction:column; gap:12px; }
.hot-item { display:flex; align-items:flex-start; gap:14px; }
.hot-rank { font-family:var(--font-serif); font-size:1.4rem; font-weight:700; color:var(--color-border); min-width:28px; line-height:1.2; }
.hot-item:nth-child(1) .hot-rank { color:var(--color-vermilion); }
.hot-item:nth-child(2) .hot-rank { color:var(--color-accent); }
.hot-item:nth-child(3) .hot-rank { color:var(--color-muted); }
.hot-body { flex:1; display:flex; flex-direction:column; gap:4px; }
.hot-title { font-family:var(--font-serif); font-size:.95rem; color:var(--color-text); font-weight:600; line-height:1.5; }
.hot-title:hover { color:var(--color-accent); }
.hot-views { font-size:.75rem; color:var(--color-muted); }

/* ── Difficulty Badge ─────────────────────────────── */
.difficulty-badge { display:inline-block; font-size:.72rem; font-weight:600; padding:2px 10px; border-radius:100px; margin-bottom:10px; }
.difficulty-beginner    { background:#f0fff4; color:#276749; border:1px solid #9ae6b4; }
.difficulty-intermediate{ background:#fffff0; color:#744210; border:1px solid #faf089; }
.difficulty-advanced    { background:#fff5f5; color:#742a2a; border:1px solid #feb2b2; }
html.dark .difficulty-beginner     { background:#1a2e22; color:#68d391; border-color:#276749; }
html.dark .difficulty-intermediate { background:#2d2a1a; color:#f6e05e; border-color:#744210; }
html.dark .difficulty-advanced     { background:#2d1a1a; color:#fc8181; border-color:#742a2a; }

/* ── TOC ──────────────────────────────────────────── */
.toc-container { background:var(--color-surface); border:1px solid var(--color-border); border-left:3px solid var(--color-accent); border-radius:0 var(--radius-md) var(--radius-md) 0; padding:16px 20px; margin:28px 0; }
.toc-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:12px; font-size:.82rem; font-weight:600; color:var(--color-accent); }
.toc-toggle { background:none; border:none; font-size:.78rem; color:var(--color-muted); cursor:pointer; padding:2px 8px; border-radius:4px; }
.toc-toggle:hover { background:var(--color-border); }
.toc-nav { display:flex; flex-direction:column; gap:6px; }
.toc-link { font-size:.85rem; color:var(--color-muted); padding:3px 0 3px 12px; border-left:2px solid transparent; transition:all .15s; display:block; }
.toc-link:hover { color:var(--color-accent); border-left-color:var(--color-accent); padding-left:16px; }

/* ── TTS Button ───────────────────────────────────── */
.tts-btn { background:none; border:1px solid var(--color-border); border-radius:100px; padding:4px 14px; font-size:.78rem; color:var(--color-muted); cursor:pointer; transition:all .15s; }
.tts-btn:hover { border-color:var(--color-accent); color:var(--color-accent); }

/* ── Reactions ────────────────────────────────────── */
.reaction-section { margin:36px 0; padding:24px; background:var(--color-surface); border:1px solid var(--color-border); border-radius:var(--radius-lg); text-align:center; }
.reaction-label { font-size:.88rem; color:var(--color-muted); margin-bottom:16px; }
.reaction-btns { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.reaction-btn { display:flex; flex-direction:column; align-items:center; gap:4px; background:var(--color-white); border:1px solid var(--color-border); border-radius:var(--radius-md); padding:12px 18px; cursor:pointer; transition:all .15s; min-width:80px; }
.reaction-btn:hover { border-color:var(--color-accent); transform:translateY(-2px); box-shadow:var(--shadow-md); }
.reaction-btn.reacted { border-color:var(--color-accent); background:var(--color-accent-lt); }
.reaction-emoji { font-size:1.6rem; }
.reaction-text { font-size:.72rem; color:var(--color-muted); }
.reaction-count { font-size:.8rem; font-weight:600; color:var(--color-accent); }

/* ── Newsletter Box ───────────────────────────────── */
.newsletter-box { background:linear-gradient(135deg, var(--color-accent) 0%, #1e3a6e 100%); border-radius:var(--radius-lg); padding:40px 32px; text-align:center; margin:48px 0 0; color:#fff; }
.newsletter-icon { font-size:2.5rem; margin-bottom:12px; }
.newsletter-title { font-family:var(--font-serif); font-size:1.4rem; font-weight:700; margin-bottom:10px; color:#fff; }
.newsletter-desc { font-size:.92rem; color:rgba(255,255,255,.8); margin-bottom:24px; line-height:1.7; }
.newsletter-form { display:flex; gap:10px; max-width:420px; margin:0 auto; }
.newsletter-input { flex:1; padding:11px 16px; border:none; border-radius:6px; font-size:.92rem; font-family:var(--font-sans); }
.newsletter-input:focus { outline:2px solid rgba(255,255,255,.5); }
.newsletter-btn { background:var(--color-vermilion); color:#fff; border:none; padding:11px 24px; border-radius:6px; font-size:.9rem; font-weight:600; cursor:pointer; transition:background .15s; }
.newsletter-btn:hover { background:#7a3325; }
.newsletter-note { font-size:.85rem; color:rgba(255,255,255,.85); margin-top:12px; }

/* ── Responsive for new elements ─────────────────── */
@media(max-width:768px){
  .stats-bar-inner { gap:16px !important; flex-wrap:wrap !important; }
  .stat-item { padding:0 16px; }
  .stat-num { font-size:1.3rem; }
  .reaction-btns { gap:8px; }
  .reaction-btn { padding:10px 12px; min-width:68px; }
  .newsletter-form { flex-direction:column; }
  .hot-rank { font-size:1.1rem; }
  .ticker-inner { animation-duration:20s; }
}

/* ── About Page ───────────────────────────────────── */
.about-page { max-width:var(--max-content); margin:0 auto; padding:56px 24px; }
.about-page h1 { font-family:var(--font-serif); font-size:2.2rem; font-weight:700; color:var(--color-text); margin-bottom:6px; }
.about-tagline { font-size:1.1rem; color:var(--color-accent); margin-bottom:36px; border-left:4px solid var(--color-accent); padding-left:16px; }
.about-page h2 { font-family:var(--font-serif); font-size:1.25rem; color:var(--color-text); margin:40px 0 16px; padding-bottom:10px; border-bottom:2px solid var(--color-border); }
.about-page p { color:var(--color-text-2); line-height:1.9; margin-bottom:16px; }
.about-page ul { list-style:none; padding:0; margin:0 0 24px; display:flex; flex-direction:column; gap:14px; }
.about-page ul li { background:var(--color-surface); border:1px solid var(--color-border); border-radius:var(--radius-md); padding:16px 20px; line-height:1.7; color:var(--color-text-2); }
.about-page ul li strong { color:var(--color-accent); }

/* ── Page Template (page.php) ─────────────────────── */
.page-header { border-bottom:2px solid var(--color-border); padding-bottom:20px; margin-bottom:36px; }
.page-title { font-family:var(--font-serif); font-size:2rem; font-weight:700; color:var(--color-text); }
.page-body { color:var(--color-text-2); line-height:1.9; }
.page-body h2 { font-family:var(--font-serif); font-size:1.25rem; margin:36px 0 16px; padding-bottom:10px; border-bottom:1px solid var(--color-border); }
.page-body p { margin-bottom:16px; }
.page-body ul, .page-body ol { padding-left:1.5em; margin-bottom:16px; }
.page-body li { margin-bottom:8px; }

/* ── Science Page ─────────────────────────────────── */
.science-hero { background:linear-gradient(135deg, var(--color-accent) 0%, #1e3a6e 100%); padding:56px 24px; color:#fff; }
.science-hero-title { font-family:var(--font-serif); font-size:2.2rem; font-weight:700; color:#fff; margin-bottom:8px; }
.science-hero-desc { font-size:1rem; color:rgba(255,255,255,.8); }
.science-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.science-cat-block { background:var(--color-surface); border:1px solid var(--color-border); border-radius:var(--radius-lg); padding:24px; display:flex; flex-direction:column; gap:12px; transition:box-shadow .2s; }
.science-cat-block:hover { box-shadow:var(--shadow-md); }
.science-cat-header { display:flex; align-items:center; justify-content:space-between; }
.science-cat-name { font-family:var(--font-serif); font-size:1.1rem; font-weight:700; color:var(--color-text); }
.science-cat-name:hover { color:var(--color-accent); }
.science-cat-count { font-size:.72rem; color:var(--color-muted); background:var(--color-bg); border-radius:100px; padding:2px 10px; }
.science-post-list { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; flex:1; }
.science-post-item a { font-size:.85rem; color:var(--color-text-2); display:flex; gap:8px; align-items:baseline; line-height:1.5; }
.science-post-item a:hover { color:var(--color-accent); }
.science-post-date { font-size:.72rem; color:var(--color-faint); flex-shrink:0; }
.science-more-link { font-size:.8rem; color:var(--color-accent); font-weight:600; align-self:flex-start; }
.science-more-link:hover { text-decoration:underline; }
@media(max-width:768px){ .science-grid { grid-template-columns:1fr; } }

/* ── Taxonomy Archive (分類頁) ─────────────────────── */
.tax-hero { background:linear-gradient(135deg, var(--color-accent) 0%, #1a3560 100%); padding:40px 24px 44px; color:#fff; }
.tax-back { font-size:.82rem; margin-bottom:12px; }
.tax-back a { color:rgba(255,255,255,.7); }
.tax-back a:hover { color:#fff; }
.tax-title { font-family:var(--font-serif); font-size:1.9rem; font-weight:700; color:#fff; margin-bottom:6px; }
.tax-desc { color:rgba(255,255,255,.75); font-size:.92rem; margin-bottom:10px; }
.tax-count { display:inline-block; background:rgba(255,255,255,.15); border-radius:100px; padding:3px 12px; font-size:.78rem; color:rgba(255,255,255,.9); }

/* ── Search Results ────────────────────────────────── */
.search-results-header { display:flex; align-items:baseline; gap:16px; margin-bottom:24px; border-bottom:2px solid var(--color-border); padding-bottom:16px; }
.search-results-title { font-family:var(--font-serif); font-size:1.5rem; color:var(--color-text); }
.search-results-count { font-size:.82rem; color:var(--color-muted); white-space:nowrap; }
.search-results-form { display:flex; gap:8px; max-width:480px; }
.search-results-form input { flex:1; padding:9px 14px; border:1px solid var(--color-border); border-radius:var(--radius-md); background:var(--color-surface); color:var(--color-text); font-size:.9rem; outline:none; }
.search-results-form input:focus { border-color:var(--color-accent); }
.search-results-form button { background:var(--color-accent); color:#fff; border:none; padding:9px 18px; border-radius:var(--radius-md); font-size:.88rem; font-weight:600; cursor:pointer; }
.search-no-results { text-align:center; padding:60px 24px; color:var(--color-text-2); }
.search-no-results-icon { font-size:3.5rem; margin-bottom:16px; }
html.dark .search-results-form input { background:#17171a; }

/* ── Mobile Hamburger ──────────────────────────────── */
.header-actions { display:flex; align-items:center; gap:4px; }
.hamburger { display:none; flex-direction:column; justify-content:center; gap:5px; background:none; border:none; cursor:pointer; padding:6px 8px; width:38px; height:38px; }
.hamburger span { display:block; width:20px; height:2px; background:var(--color-muted); border-radius:2px; transition:all .25s; transform-origin:center; }
.hamburger.is-active span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.hamburger.is-active span:nth-child(2) { opacity:0; }
.hamburger.is-active span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }
@media(max-width:680px){
  .hamburger { display:flex; }
  .site-nav {
    display:none; position:absolute; top:64px; left:0; right:0;
    background:var(--color-white); border-bottom:1px solid var(--color-border);
    flex-direction:column; padding:8px 0; z-index:200; box-shadow:var(--shadow-md);
  }
  .site-nav.nav-open { display:flex; }
  .site-nav a { padding:12px 24px; font-size:.95rem; border-bottom:none; width:100%; }
  .site-nav a:hover { background:var(--color-bg); }
  html.dark .site-nav { background:#17171a; }
}