/* ── AI 日报 · 科技蓝讯（与壳层/GitHub 同系蓝青，避免黑红割裂） ── */
  @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

  :root {
    --bg: #f5f7fb;
    --bg-wash: #eef2f7;
    --panel: #ffffff;
    --panel2: #eef2f7;
    --text: #0f172a;
    --muted: #64748b;
    --line: #dbe3ee;
    --ink: #0f172a;
    --accent: #2563eb;
    --accent-soft: #eff6ff;
    --accent-on: #ffffff;
    /* 壳层固定科技蓝 — 不跟页面类型切换 */
    --shell-active: #1d4ed8;
    --shell-active-text: #ffffff;
    --shell-mark-bg: #1d4ed8;
    --shell-mark-text: #ffffff;
    --nav-active-bg: var(--shell-active);
    --nav-active-text: var(--shell-active-text);
    --hero-from: #0f172a;
    --hero-to: #1e3a8a;
    --hero-text: #f8fafc;
    --hero-rule: #38bdf8;
    --link: #1d4ed8;
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.07);
    --font-ui: "Inter", "Noto Sans SC", sans-serif;
    --font-display: "Inter", "Noto Sans SC", sans-serif;
    --tag-coding: #3730a3;
    --tag-coding-bg: #eef2ff;
    --tag-robot: #0f766e;
    --tag-robot-bg: #ecfdf8;
    --tag-model: #b45309;
    --tag-model-bg: #fff7ed;
    --tag-chip: #0369a1;
    --tag-chip-bg: #e0f2fe;
    --tag-market: #9d174d;
    --tag-market-bg: #fdf2f8;
  }
  [data-theme="dark"] {
    --bg: #0b1220;
    --bg-wash: #111827;
    --panel: #111827;
    --panel2: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --line: #334155;
    --ink: #e2e8f0;
    --accent: #38bdf8;
    --accent-soft: #0c1929;
    --accent-on: #0b1220;
    --shell-active: #0284c7;
    --shell-active-text: #f0f9ff;
    --shell-mark-bg: #0284c7;
    --shell-mark-text: #f0f9ff;
    --nav-active-bg: var(--shell-active);
    --nav-active-text: var(--shell-active-text);
    --hero-from: #020617;
    --hero-to: #0c4a6e;
    --hero-text: #f1f5f9;
    --hero-rule: #38bdf8;
    --link: #7dd3fc;
    --shadow: 0 1px 2px rgba(0,0,0,0.35), 0 10px 28px rgba(0,0,0,0.35);
    --tag-coding: #a5b4fc;
    --tag-coding-bg: #1e1b4b;
    --tag-robot: #5eead4;
    --tag-robot-bg: #134e4a;
    --tag-model: #fbbf24;
    --tag-model-bg: #451a03;
    --tag-chip: #7dd3fc;
    --tag-chip-bg: #0c4a6e;
    --tag-market: #f9a8d4;
    --tag-market-bg: #500724;
  }
  *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; background-color: #f5f7fb; color-scheme: light; }
  html[data-theme="dark"] { background-color: #0b1220; color-scheme: dark; }
  /* 手机端禁止横向平移（部分 WebView 会把平移出屏的 fixed 侧栏计入可滚动区域） */
  html, body { overflow-x: hidden; }
  @supports (overflow-x: clip) { html, body { overflow-x: clip; } }
  body {
    font-family: var(--font-ui);
    font-size: 16px;
    background:
      radial-gradient(1100px 420px at 8% -6%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 55%),
      radial-gradient(900px 400px at 100% 0%, color-mix(in srgb, var(--hero-rule) 12%, transparent), transparent 50%),
      linear-gradient(180deg, var(--bg-wash) 0%, var(--bg) 240px, var(--bg) 100%);
    color: var(--text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  ::selection { background: color-mix(in srgb, var(--accent) 28%, transparent); }
  button:focus-visible, a:focus-visible, .filter-chip:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
  }

  /* ── Shell（全站共用；禁止被 GitHub 页 token 改色） ── */
  .topbar {
    position: fixed; top: 0; left: 0; right: 0; height: 56px;
    background: color-mix(in srgb, var(--panel) 88%, transparent);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    display: flex; align-items: center; padding: 0 18px; z-index: 100;
  }
  .menu-btn {
    background: none; border: none; color: var(--text);
    width: 40px; height: 40px; border-radius: 10px; cursor: pointer;
    margin-right: 6px; display: none; place-items: center;
  }
  .menu-btn svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }
  .brand {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    height: 28px;
    color: var(--text);
    text-decoration: none;
    line-height: 0;
  }
  .brand .mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none;
    box-sizing: border-box;
    height: 28px;
    padding: 0 9px;
    border-radius: 8px;
    color: var(--shell-mark-text);
    background: var(--shell-mark-bg);
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.04em;
    line-height: 1;
  }
  .brand .brand-text {
    display: block;
    box-sizing: border-box;
    height: 28px;
    margin: 0;
    padding: 0;
    font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.01em;
    line-height: 28px;
    /* CJK 字面在行盒里偏上，用微调让上下空隙接近 */
    transform: translateY(1px);
  }
  .spacer { flex: 1; }
  .topbar-actions { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; }
  .home-btn,
  .theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; padding: 0;
    background: var(--panel2); border: 1px solid var(--line);
    color: var(--text); border-radius: 10px;
    text-decoration: none; cursor: pointer; flex-shrink: 0;
  }
  .home-btn:hover,
  .theme-toggle:hover {
    border-color: color-mix(in srgb, var(--shell-active) 40%, var(--line));
    color: var(--shell-active);
  }
  .home-btn svg,
  .theme-toggle svg {
    width: 18px; height: 18px; stroke: currentColor; fill: none;
    stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
  }
  .layout { display: flex; min-height: 100vh; padding-top: 56px; }
  .sidebar {
    width: 248px; background: color-mix(in srgb, var(--panel) 92%, transparent);
    border-right: 1px solid var(--line);
    padding: 18px 12px; position: fixed; left: 0; top: 56px; bottom: 0;
    overflow-y: auto; transform: translateX(0); transition: transform 0.3s ease; z-index: 95;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }
  .side-head { display: none !important; }
  .sidebar .side-nav a {
    display: block; padding: 9px 12px; color: var(--text) !important;
    text-decoration: none !important; border-radius: 10px; font-size: 14.5px;
    line-height: 1.45; font-weight: 600;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .sidebar .side-nav a:hover { background: var(--panel2); }
  .sidebar .side-nav a.active {
    background: var(--shell-active) !important; color: var(--shell-active-text) !important;
    box-shadow: none;
  }
  .sidebar .side-nav .nav-section {
    font-size: 12px; font-weight: 700; color: var(--muted);
    margin: 18px 0 8px; padding: 0 12px; letter-spacing: 0.04em;
    text-transform: none;
  }
  .sidebar .side-nav .nav-section:first-child { margin-top: 4px; }
  .main { flex: 1; margin-left: 248px; transition: margin-left 0.3s ease; }
  .main-body {
    display: flex; flex-direction: row; flex-wrap: nowrap;
    gap: 22px; align-items: flex-start; max-width: 1040px; margin: 0 auto;
  }
  .wrap {
    flex: 1 1 auto; min-width: 0; max-width: calc(100% - 222px);
    padding: 24px 22px 64px;
  }
  .container { max-width: 680px; width: 100%; }
  .page-toc {
    flex: 0 0 200px; width: 200px; align-self: flex-start;
    position: sticky; top: 76px;
    max-height: calc(100vh - 96px); overflow-y: auto;
    background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
    padding: 14px; box-shadow: var(--shadow);
  }
  .toc-title { font-size: 12px; font-weight: 700; color: var(--muted); margin-bottom: 10px; letter-spacing: 0.04em; }
  .page-toc a {
    display: block; padding: 7px 10px; color: var(--muted);
    text-decoration: none !important; font-size: 13.5px; border-radius: 8px; margin-bottom: 2px; line-height: 1.45;
  }
  .page-toc a:hover { background: var(--panel2); color: var(--text); }
  .page-toc a.cur {
    background: var(--accent-soft); color: var(--accent) !important; font-weight: 700;
    border-left: 2px solid var(--accent); padding-left: 10px;
  }
  .scrim { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.48); z-index: 90; top: 56px; touch-action: none; }
  .scrim.open { display: block; }
  /* 侧栏展开时锁住页面滚动，避免目录滚动穿透到正文 */
  html.nav-open,
  html.nav-open body {
    overflow: hidden !important;
    overscroll-behavior: none;
    touch-action: none;
  }
  html.nav-open .sidebar {
    touch-action: pan-y;
    overscroll-behavior: contain;
  }
  @media (max-width: 1100px) {
    .page-toc { display: none; }
    .wrap { max-width: 100%; }
  }
  @media (max-width: 768px) {
    .menu-btn { display: grid; }
    .sidebar { transform: translateX(-100%); visibility: hidden; transition: transform .3s ease, visibility .3s ease; }
    .sidebar.open { transform: translateX(0); visibility: visible; }
    .main { margin-left: 0; }
    .wrap { padding: 16px 14px 52px; max-width: 100%; }
  }

  /* ── Masthead / Hero（日报 · 科技蓝青，与壳层同系） ── */
  body[data-page*="daily_news"] .hero {
    position: relative; overflow: hidden;
    background:
      linear-gradient(rgba(248,250,252,.045) 1px, transparent 1px) 0 0 / 100% 38px,
      linear-gradient(90deg, rgba(248,250,252,.045) 1px, transparent 1px) 0 0 / 38px 100%,
      radial-gradient(220px 160px at 86% 118%, color-mix(in srgb, var(--hero-rule) 16%, transparent), transparent 70%),
      linear-gradient(135deg, var(--hero-from) 0%, color-mix(in srgb, var(--hero-to) 88%, var(--hero-rule)) 55%, var(--hero-to) 100%);
    color: var(--hero-text); border-radius: 18px; padding: 28px 26px 26px;
    margin-bottom: 18px; box-shadow: 0 8px 28px rgba(15, 23, 42, 0.16);
    width: 100%; box-sizing: border-box;
  }
  body[data-page*="daily_news"] .hero::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
    background: var(--hero-rule);
  }
  body[data-page*="daily_news"] .hero::after {
    content: ""; position: absolute; right: -36px; top: -40px; width: 160px; height: 160px;
    border-radius: 50%; background: color-mix(in srgb, var(--hero-rule) 22%, transparent);
    pointer-events: none;
  }
  body[data-page*="daily_news"] .hero h1 {
    position: relative; z-index: 1;
    font-family: var(--font-display); font-size: clamp(26px, 4.2vw, 32px);
    font-weight: 700; letter-spacing: 0.01em; line-height: 1.3; margin-bottom: 10px;
  }
  body[data-page*="daily_news"] .hero .date {
    position: relative; z-index: 1;
    font-size: 14.5px; font-weight: 600; opacity: 0.92; margin-bottom: 6px;
  }
  body[data-page*="daily_news"] .hero .subtitle {
    position: relative; z-index: 1;
    font-size: 15px; opacity: 0.85; max-width: 36em; line-height: 1.6;
  }

  /* ── Stats & filter ── */
  .stats-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; width: 100%; }
  .stat-chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 14px; background: var(--panel); border: 1px solid var(--line);
    border-radius: 999px; font-size: 14px; box-shadow: 0 1px 0 rgba(255,255,255,0.4) inset;
  }
  .stat-chip .num {
    font-family: var(--font-display); font-weight: 700; color: var(--accent);
    line-height: 1; font-variant-numeric: tabular-nums; font-size: 15px;
  }
  .stat-chip .label { color: var(--muted); line-height: 1; white-space: nowrap; }
  .filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; width: 100%; }
  .filter-chip {
    flex-shrink: 0; padding: 8px 14px; border-radius: 999px; font-size: 14px; font-weight: 600;
    border: 1px solid var(--line); background: var(--panel); color: var(--muted);
    cursor: pointer; transition: background .18s, color .18s, border-color .18s, transform .15s;
  }
  .filter-chip:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
  /* active「全部」：与壳层科技蓝一致，勿用纯黑 */
  .filter-chip.active {
    background: var(--shell-active); color: var(--shell-active-text); border-color: var(--shell-active);
  }
  .filter-chip.active[data-cat="coding"] { background: var(--tag-coding); border-color: var(--tag-coding); color: #fff; }
  .filter-chip.active[data-cat="robot"] { background: var(--tag-robot); border-color: var(--tag-robot); color: #fff; }
  .filter-chip.active[data-cat="model"] { background: var(--tag-model); border-color: var(--tag-model); color: #fff; }
  .filter-chip.active[data-cat="chip"] { background: var(--tag-chip); border-color: var(--tag-chip); color: #fff; }
  .filter-chip.active[data-cat="market"] { background: var(--tag-market); border-color: var(--tag-market); color: #fff; }
  /* 深色标签色偏浅，白字不够，改用页面底色作字色 */
  [data-theme="dark"] .filter-chip.active[data-cat="coding"],
  [data-theme="dark"] .filter-chip.active[data-cat="robot"],
  [data-theme="dark"] .filter-chip.active[data-cat="model"],
  [data-theme="dark"] .filter-chip.active[data-cat="chip"],
  [data-theme="dark"] .filter-chip.active[data-cat="market"] { color: var(--bg); }

  .section-title {
    display: flex; align-items: center; gap: 12px;
    font-family: var(--font-display); font-size: 20px; font-weight: 700;
    color: var(--text); letter-spacing: 0.01em;
    margin: 8px 0 16px; text-transform: none;
  }
  .section-title::before {
    content: ""; width: 18px; height: 3px; border-radius: 2px; background: var(--accent); flex: none;
  }

  /* ── news-card ── */
  .news-card {
    position: relative;
    background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
    padding: 18px 18px 16px 20px; margin-bottom: 14px;
    scroll-margin-top: 80px; box-shadow: var(--shadow);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  }
  .news-card::before {
    content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 3px;
    border-radius: 0 3px 3px 0; background: var(--accent);
  }
  .news-card[data-category="coding"]::before { background: var(--tag-coding); }
  .news-card[data-category="robot"]::before { background: var(--tag-robot); }
  .news-card[data-category="model"]::before { background: var(--tag-model); }
  .news-card[data-category="chip"]::before { background: var(--tag-chip); }
  .news-card[data-category="market"]::before { background: var(--tag-market); }
  .news-card:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
  }
  .news-header { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; }
  .news-num {
    /* 高度 = 标题 font-size；margin 对齐首行字盒（line-height 半行距） */
    flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center;
    box-sizing: border-box; min-width: 26px; height: 18.5px; padding: 0 6px;
    margin-top: calc((18.5px * 1.5 - 18.5px) / 2);
    border-radius: 5px; background: var(--shell-active); color: var(--shell-active-text);
    font-family: var(--font-display); font-size: 11px; font-weight: 700; line-height: 1;
    letter-spacing: 0.02em; font-variant-numeric: tabular-nums;
  }
  .news-title {
    flex: 1; min-width: 0;
    font-family: var(--font-display); font-size: 18.5px; font-weight: 700; line-height: 1.5;
    color: var(--text); margin: 0; padding: 0; letter-spacing: 0.01em;
  }
  /* ── figure-v2：核心内容内嵌大图（og:image ≥400px / AI 编辑插画 / 分类渐变兜底） ── */
  .news-figure {
    margin: 0 0 12px; border-radius: 8px; overflow: hidden;
    border: 1px solid var(--line); background: var(--panel2);
    display: flex; align-items: center; justify-content: center;
    aspect-ratio: 16 / 9;   /* 无图占位高度 */
  }
  /* 有图：容器贴合图片实际高度（block + 自然高），渐变底换中性底 */
  .news-figure.has-img { display: block; aspect-ratio: auto; background: var(--panel2); border-color: var(--line); }
  .news-figure img { width: 100%; height: auto; max-height: 480px; object-fit: contain; display: block; }
  .news-figure svg { width: 34px; height: 34px; stroke: #fff; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; opacity: 0.9; }
  .news-figure.f-coding { background: linear-gradient(135deg, #3730a3, #6366f1); border-color: transparent; }
  .news-figure.f-robot  { background: linear-gradient(135deg, #0f766e, #14b8a6); border-color: transparent; }
  .news-figure.f-model  { background: linear-gradient(135deg, #b45309, #f59e0b); border-color: transparent; }
  .news-figure.f-chip   { background: linear-gradient(135deg, #0369a1, #0ea5e9); border-color: transparent; }
  .news-figure.f-market { background: linear-gradient(135deg, #9d174d, #ec4899); border-color: transparent; }
  .news-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
  .news-tag {
    font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px;
    letter-spacing: 0.02em; border: 1px solid transparent;
  }
  .tag-coding { background: var(--tag-coding-bg); color: var(--tag-coding); }
  .tag-robot { background: var(--tag-robot-bg); color: var(--tag-robot); }
  .tag-model { background: var(--tag-model-bg); color: var(--tag-model); }
  .tag-chip { background: var(--tag-chip-bg); color: var(--tag-chip); }
  .tag-market { background: var(--tag-market-bg); color: var(--tag-market); }
  .news-lead {
    font-size: 15.5px; color: var(--muted); line-height: 1.8;
    margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px dashed var(--line);
  }
  .news-insight {
    position: relative;
    background: linear-gradient(180deg, var(--panel2), color-mix(in srgb, var(--panel2) 40%, var(--panel)));
    border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px 14px 19px;
    font-size: 14.5px; line-height: 1.8; color: var(--text); margin-bottom: 14px;
  }
  .news-insight::before {
    content: ""; position: absolute; left: 0; top: 12px; bottom: 12px; width: 3px;
    border-radius: 0 3px 3px 0; background: var(--accent); opacity: 0.85;
  }
  .news-insight-label {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 12px; font-weight: 800; color: var(--accent);
    margin-bottom: 8px; letter-spacing: 0.06em; text-transform: uppercase;
  }
  .news-insight-label::before {
    content: ""; width: 6px; height: 6px; border-radius: 1px; background: var(--accent); transform: rotate(45deg);
  }
  .news-footer { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 2px; }
  .source-link {
    font-size: 13.5px; color: var(--link); text-decoration: none;
    padding: 6px 12px; border-radius: 8px; background: var(--panel2); font-weight: 600;
    border: 1px solid var(--line); display: inline-flex; align-items: center; gap: 6px;
  }
  .source-link svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; }
  .source-link:hover { background: var(--accent); color: var(--accent-on); border-color: var(--accent); }
  .footer {
    text-align: center; padding: 28px 0 8px; font-size: 13px; color: var(--muted);
    border-top: 1px solid var(--line); margin-top: 12px; letter-spacing: 0.02em;
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; }
    .news-card:hover { transform: none; }
  }