/* ==========================================================================
   Echo Theme  ·  Core
   ========================================================================== */

:root {
  /* 主色相关变量由 head.ejs 依据 theme.colors 注入；此处为兜底默认值 */
  --accent: #5b8cff;
  --accent-soft: rgba(91, 140, 255, .12);
  --accent-strong: #3f6ee0;
  --secondary: #8f6bff;
  --accent-glow: rgba(91, 140, 255, .3);
  --accent-glow-strong: rgba(91, 140, 255, .38);
  --radius: 14px;
  --max-width: 1180px;
  --header-h: 64px;

  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --bg-sunken: #eef0f7;
  --text: #1b1f2a;
  --text-soft: #5a6172;
  --text-mute: #8b93a7;
  --border: #e4e7f0;
  --border-soft: #eef0f7;
  --shadow-sm: 0 1px 2px rgba(20, 25, 45, .05), 0 2px 8px rgba(20, 25, 45, .04);
  --shadow-md: 0 4px 12px rgba(20, 25, 45, .07), 0 12px 32px rgba(20, 25, 45, .06);
  --shadow-lg: 0 12px 32px rgba(20, 25, 45, .12), 0 32px 64px rgba(20, 25, 45, .08);

  --warn: #f59e0b;

  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --ease: cubic-bezier(.4, 0, .2, 1);
}

[data-theme='dark'] {
  --bg: #0f1117;
  --bg-elev: #171a23;
  --bg-sunken: #12141c;
  --text: #e8eaf1;
  --text-soft: #a8afc0;
  --text-mute: #767e93;
  --border: #262a36;
  --border-soft: #1e2230;
  --accent-soft: var(--accent-soft-strong, rgba(91, 140, 255, .16));
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, .5);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* 用 clip 而非 hidden：hidden 会让 body 成为滚动容器，导致后代的 position:sticky（导航、侧栏）全部失效 */
  overflow-x: clip;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; color: inherit; cursor: pointer; }
code, kbd, pre { font-family: var(--font-mono); }

.icon { flex: none; display: inline-block; vertical-align: -.15em; }

::selection { background: var(--accent); color: #fff; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  transition: top .2s;
}
.skip-link:focus { top: 12px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Layout ---------- */
.site-main { min-height: 60vh; }

/* 三栏容器：左栏 / 正文 / 右栏；用 flex 以便任一栏关闭时正文自动补位 */
.layout {
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 26px 24px 72px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--layout-gap, 36px);
}
.layout-main {
  flex: 1 1 auto;
  min-width: 0;
  max-width: var(--main-max, 820px);
}

.rail { flex: 0 0 auto; align-self: stretch; width: var(--rail-w, 240px); min-width: 0; }
.rail-left { width: var(--rail-w-left, var(--rail-w, 240px)); }
.rail-right { width: var(--rail-w-right, var(--rail-w, 240px)); }
.rail-sticky {
  position: sticky;
  /* 与 .layout 的 26px 顶边距一致：吸附后侧栏与内容列同一条起始线，不显得顶近导航 */
  top: calc(var(--header-h) + 26px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: calc(100vh - var(--header-h) - 52px);
  overflow-y: auto;
  overscroll-behavior: contain;
  /* 内容超出视口时仍可滚动，但不显示滚动条 */
  scrollbar-width: none;
  padding-bottom: 4px;
}
.rail-sticky::-webkit-scrollbar,
.toc-card .toc-body::-webkit-scrollbar { display: none; }

/* 宽屏（≥1680px）：中栏的 --main-max 由 head.ejs 改成「总宽 − 两栏 − 两道栏距 − 内边距」，
   侧栏外移多少中栏就长多少，所以这里回到居中即可 —— 不要用 space-between，
   否则多出来的空间会被摊进「侧栏↔中栏」的缝里，变成两道大空隙。 */

/* 响应式收栏顺序：先收起右栏，页面更窄时再收起左栏 */
@media (max-width: 1280px) {
  .rail-right { display: none; }
  .layout-main { max-width: none; }
}
@media (max-width: 1024px) {
  .rail-left { display: none; }
}
@media (max-width: 640px) {
  .layout { padding: 18px 16px 56px; }
}

/* ---------- 首页顶部大图（Hero） ---------- */
.home-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: var(--hero-h, 520px);
  padding: calc(var(--header-h) + 34px) 24px 64px;
  background: linear-gradient(160deg, #0d1224, #131a33);
}
.home-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center 34%;
  background-repeat: no-repeat;
  transform: scale(1.03);
}
.home-hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(6, 8, 14, .58) 0%,
    rgba(6, 8, 14, .28) 42%,
    rgba(6, 8, 14, .55) 80%,
    color-mix(in srgb, var(--bg) 94%, transparent) 100%
  );
}
.home-hero-inner { position: relative; max-width: 820px; }
.home-hero-title {
  margin: 0 0 14px;
  font-size: clamp(30px, 5.2vw, 54px);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.1;
  color: #fff;
  text-shadow: 0 6px 34px rgba(0, 0, 0, .5);
}
.home-hero-subtitle {
  margin: 0 auto 28px;
  max-width: 620px;
  font-size: clamp(14px, 1.7vw, 18px);
  line-height: 1.7;
  color: rgba(255, 255, 255, .9);
  text-shadow: 0 2px 18px rgba(0, 0, 0, .55);
}
.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.btn-hero-ghost {
  color: #fff;
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .34);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-hero-ghost:hover {
  background: rgba(255, 255, 255, .24);
  border-color: rgba(255, 255, 255, .52);
  transform: translateY(-2px);
}
.home-hero-social {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}
.hero-social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: #fff;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
.hero-social-btn:hover {
  background: rgba(255, 255, 255, .28);
  border-color: rgba(255, 255, 255, .5);
  transform: translateY(-2px);
}
/* 侧栏在所有页面统一吸附于导航栏下方，保证目录阅读时始终可见 */
@media (max-width: 640px) {
  .home-hero { min-height: 400px; padding: calc(var(--header-h) + 22px) 18px 48px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease),
    background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-strong);
  box-shadow: 0 6px 18px var(--accent-glow-strong);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--bg-elev);
  border-color: var(--border);
  color: var(--text-soft);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text-soft);
  transition: background .18s, color .18s;
}
.icon-btn:hover { background: var(--accent-soft); color: var(--accent); }

/* 首页 Hero 需要绝对定位的导航悬浮其上 */
.app-frame { position: relative; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  isolation: isolate;
  background: color-mix(in srgb, var(--bg-elev) 86%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}

/* 顶部横幅背景（参考布局里的封面图效果） */
.site-header-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  background: var(--bg-elev);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  pointer-events: none;
}
.site-header-bg.has-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 30%, #0b0e15), color-mix(in srgb, var(--secondary) 24%, #0b0e15));
  opacity: .88;
}
.site-header-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(6, 8, 14, .10), rgba(6, 8, 14, .55));
}
.site-header.has-banner { --header-h: 78px; }
.site-header.has-banner .brand-mark { box-shadow: 0 3px 16px rgba(0, 0, 0, .35); }
.site-header.has-banner .brand-text strong,
.site-header.has-banner .nav-link { color: rgba(255, 255, 255, .95); }
.site-header.has-banner .brand-text small { color: rgba(255, 255, 255, .74); }
.site-header.has-banner .nav-link { color: rgba(255, 255, 255, .82); }
.site-header.has-banner .nav-link:hover,
.site-header.has-banner .nav-link.is-active { background: rgba(255, 255, 255, .16); color: #fff; }
.site-header.has-banner .icon-btn { color: rgba(255, 255, 255, .9); }
.site-header.has-banner .icon-btn:hover { background: rgba(255, 255, 255, .16); color: #fff; }

/* 首页大图：导航固定在顶部，透明悬浮在图上；滚动过大图后自动变实底 */
.site-header.has-hero {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  border-bottom: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
/* 滚动过大图后：实底 + 模糊 + 恢复深色文字 */
.site-header.has-hero.is-scrolled {
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.site-header.has-hero.is-scrolled .brand-text strong { color: var(--text); }
.site-header.has-hero.is-scrolled .brand-text small { color: var(--text-mute); }
.site-header.has-hero.is-scrolled .nav-link { color: var(--text-soft); }
.site-header.has-hero.is-scrolled .nav-link:hover,
.site-header.has-hero.is-scrolled .nav-link.is-active { background: var(--accent-soft); color: var(--accent); }
.site-header.has-hero.is-scrolled .icon-btn { color: var(--text-soft); }
.site-header.has-hero.is-scrolled .icon-btn:hover { background: var(--accent-soft); color: var(--accent); }

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: var(--header-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 10px; flex: none; }
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--brand-gradient, linear-gradient(135deg, var(--accent), #8f6bff));
  color: #fff;
  font-weight: 700;
  font-size: 17px;
  box-shadow: 0 3px 10px var(--accent-glow);
}
/* 品牌位使用站点图标（favicon.png）时，图片铺满圆角容器 */
.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border-radius: inherit;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.brand-text small { font-size: 11.5px; color: var(--text-mute); }

.site-nav { flex: 1; min-width: 0; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: none;
  border-radius: 9px;
  background: transparent;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-soft);
  transition: background .18s, color .18s;
}
.nav-link .icon { width: 16px; height: 16px; opacity: .9; flex: none; }
.nav-link:hover { background: var(--accent-soft); color: var(--accent); }
.nav-link.is-active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 2px; flex: none; }

#theme-toggle .icon-sun,
#theme-toggle .icon-moon { display: none; }
[data-theme='light'] #theme-toggle .icon-sun { display: inline-flex; }
[data-theme='dark'] #theme-toggle .icon-moon { display: inline-flex; }

.menu-toggle { display: none; }

@media (max-width: 900px) {
  .menu-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 12px 16px 20px;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav-list { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link { justify-content: flex-start; padding: 11px 14px; font-size: 15px; }
}

@media (max-width: 640px) {
  .header-inner { padding: 0 16px; gap: 10px; }
  .brand-text small { display: none; }
}

/* ==========================================================================
   Section heads
   ========================================================================== */
.home-intro {
  margin-bottom: 22px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background:
    radial-gradient(520px 220px at 10% -20%, var(--accent-soft), transparent 70%),
    var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.home-title {
  margin: 0 0 8px;
  font-size: clamp(23px, 3.2vw, 30px);
  font-weight: 800;
  letter-spacing: -.025em;
}
.home-desc { margin: 0 0 16px; font-size: 14.5px; line-height: 1.75; color: var(--text-soft); }
.home-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.home-section { margin-bottom: 30px; }
.home-section:last-child { margin-bottom: 0; }
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 18px;
}
.section-title {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
}
.section-title .icon { color: var(--accent); }
.section-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-mute);
  transition: color .18s, gap .18s;
}
.section-more:hover { color: var(--accent); gap: 8px; }

/* ---------- 首页资源分类入口 ---------- */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr));
  gap: 14px;
}
.entry-card {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 16px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s;
}
.entry-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--shadow-md);
}
.entry-card > .icon:last-child { margin-left: auto; color: var(--text-mute); }
.entry-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  flex: none;
}
.entry-text { display: flex; flex-direction: column; line-height: 1.35; min-width: 0; }
.entry-text strong { font-size: 15px; font-weight: 600; }
.entry-text small { font-size: 12.5px; color: var(--text-mute); }

@media (max-width: 640px) {
  .hero { padding: 44px 16px 40px; }
}

/* ==========================================================================
   Post cards
   ========================================================================== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
@media (max-width: 900px) {
  .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.card-cover {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-sunken);
}
.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.post-card:hover .card-cover img { transform: scale(1.05); }

.cover-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: color-mix(in srgb, var(--accent) 70%, var(--text-mute));
  background:
    radial-gradient(200px 120px at 30% 20%, var(--accent-soft), transparent 70%),
    linear-gradient(135deg, var(--bg-sunken), var(--bg-elev));
}
.cover-fallback::after {
  content: attr(data-title);
  position: absolute;
  bottom: 10px;
  left: 12px;
  right: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-badge,
.resource-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-soft);
}

.card-body { display: flex; flex-direction: column; flex: 1; padding: 16px 17px 15px; }
.card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 8px;
  font-size: 12.5px;
  color: var(--text-mute);
}
.card-meta a:hover { color: var(--accent); }
.card-title { margin: 0 0 8px; font-size: 16.5px; font-weight: 700; line-height: 1.45; letter-spacing: -.01em; }
.card-title a:hover { color: var(--accent); }
.card-excerpt {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-fields { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.field-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 7px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-soft);
  font-size: 12px;
  color: var(--text-soft);
}
.field-chip em { font-style: normal; color: var(--text-mute); font-size: 11.5px; }

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
}
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
}
.post-card:hover .read-more { gap: 7px; }
.read-more .icon { transition: transform .2s var(--ease); }
.post-card:hover .read-more .icon { transform: translateX(2px); }
.card-stats { display: inline-flex; gap: 10px; font-size: 12px; color: var(--text-mute); white-space: nowrap; }
.card-stats span { display: inline-flex; align-items: center; gap: 4px; }
.card-tags { display: inline-flex; flex-wrap: wrap; gap: 6px; min-width: 0; }
.card-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 600;
  transition: background .18s, color .18s;
}
.card-tag:hover { background: var(--accent); color: #fff; }

.post-card.is-compact .card-cover { aspect-ratio: 21 / 9; }

/* ==========================================================================
   Resource cards & grid
   ========================================================================== */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
  gap: 20px;
}

.resource-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s;
}
.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.resource-cover {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-sunken);
}
.resource-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.resource-card:hover .resource-cover img { transform: scale(1.05); }
.resource-updated {
  position: absolute;
  right: 10px;
  bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(15, 17, 23, .72);
  color: #fff;
  font-size: 11.5px;
  font-weight: 500;
}
.resource-body { display: flex; flex-direction: column; flex: 1; padding: 16px 17px; }
.resource-title { margin: 0 0 8px; font-size: 16px; font-weight: 700; line-height: 1.45; }
.resource-title a:hover { color: var(--accent); }
.resource-excerpt {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.resource-fields { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.resource-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border-soft); }
.resource-actions .btn { flex: 1; min-width: 0; }

/* ---------- Filter chips（资源类型 / 文章分类导航） ---------- */
.resource-filter,
.filter-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-soft);
  transition: all .18s var(--ease);
}
.filter-chip:hover { border-color: var(--accent); color: var(--accent); }
.filter-chip.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 3px 10px var(--accent-glow);
}
.filter-count {
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--bg-sunken);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-mute);
}
.filter-chip.is-active .filter-count { background: rgba(255, 255, 255, .22); color: #fff; }

/* ---------- Page banner（内页顶部横幅） ---------- */
.page-banner {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(760px 300px at 14% -10%, var(--accent-soft), transparent 68%),
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, var(--bg-elev)), var(--bg-elev));
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}
.page-banner.has-banner { border-bottom: none; }
/* 浅色主题下横幅是深色大图，与浅色正文之间会形成硬边；
   在底部铺一段渐隐，让横幅平滑溶进页面底色（深色主题下自动几乎不可见）。 */
.page-banner.has-banner::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--banner-fade, 104px);
  background: linear-gradient(180deg, transparent, var(--bg) 94%);
  pointer-events: none;
}
.page-banner-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 8, 14, .48), rgba(6, 8, 14, .74));
  pointer-events: none;
}
.page-banner-inner {
  position: relative;
  z-index: 1;
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: 30px 24px 34px;
}
/* 有横幅时给底部渐隐留出空间，避免卡片被渐变压住 */
.page-banner.has-banner .page-banner-inner { padding-bottom: calc(34px + var(--banner-fade, 104px) * .55); }
.page-banner-card {
  position: relative;
  z-index: 1;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elev) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}
.page-banner.has-banner .page-banner-card {
  background: color-mix(in srgb, #0b0e15 62%, transparent);
  border: 1px solid rgba(255, 255, 255, .1);
}
.page-banner-title {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 8px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -.02em;
}
/* 图标跟随标题文字色，不再单独用主色蓝——横幅标题是一个整体 */
.page-banner-title .icon { color: currentColor; opacity: .85; }
.page-banner.has-banner .page-banner-title,
.page-banner.has-banner .page-banner-desc { color: #fff; }
.page-banner-desc { margin: 0; font-size: 14px; color: var(--text-soft); }
.page-banner-desc strong { color: var(--accent); font-weight: 800; }
.page-banner.has-banner .page-banner-desc strong { color: #fff; }

@media (max-width: 640px) {
  .page-banner-inner { padding: 20px 16px 24px; }
  .page-banner-card { padding: 18px 18px; }
  .post-grid, .resource-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   浅色主题下的横幅配色
   浅色页面里深色大图 + 深色蒙层会又闷又割裂，所以浅色主题整套换成
   「明亮浅蓝」配色：取消大图与蒙层，底色用 --banner-light 浅蓝，
   文字/图标用高对比深色，边界靠细描边而不是重投影。

   注意选择器：除了 [data-theme='light']（JS 手动/自动解析后的值），
   还要覆盖 prefers-color-scheme: light —— 因为 auto 模式下 <html>
   上的 data-theme 要等 JS 执行后才有值，JS 未跑完/被缓存时若只写
   [data-theme='light'] 就会退回深色大图，出现「发灰」闪帧。
   ========================================================================== */

/* --- 1. 顶部导航横幅：明亮浅蓝 --- */
[data-theme='light'] .site-header-bg,
[data-theme='light'] .page-banner,
[data-theme-hint='light'] .site-header-bg,
[data-theme-hint='light'] .page-banner {
  background-image: none !important;
}
/* 关掉深色蒙层与深色叠加层——它们是浅色下发灰看不清的元凶 */
[data-theme='light'] .site-header-bg.has-banner::after,
[data-theme='light'] .site-header-scrim,
[data-theme-hint='light'] .site-header-bg.has-banner::after,
[data-theme-hint='light'] .site-header-scrim { display: none; }
[data-theme='light'] .site-header-bg,
[data-theme='light'] .site-header-bg.has-banner,
[data-theme-hint='light'] .site-header-bg,
[data-theme-hint='light'] .site-header-bg.has-banner {
  background:
    radial-gradient(760px 340px at 12% -40%, color-mix(in srgb, #fff 55%, transparent), transparent 70%),
    linear-gradient(180deg, var(--banner-light) 0%, color-mix(in srgb, var(--banner-light) 55%, #fff) 100%) !important;
}
/* 浅蓝底上用常规描边收边 */
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner {
  border-bottom: 1px solid var(--banner-light-line);
}
/* 文字与图标：高对比深色（在浅蓝上清晰可读） */
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled) .brand-text strong,
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .brand-text strong,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled) .brand-text strong,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .brand-text strong { color: #0f172a; }
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled) .brand-text small,
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .brand-text small,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled) .brand-text small,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .brand-text small { color: #475569; }
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled) .nav-link,
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .nav-link,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled) .nav-link,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .nav-link { color: #1e293b; }
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .nav-link:hover,
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .nav-link.is-active,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .nav-link:hover,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .nav-link.is-active {
  background: color-mix(in srgb, #fff 62%, transparent);
  color: #0f172a;
}
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled) .icon-btn,
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .icon-btn,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled) .icon-btn,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .icon-btn { color: #334155; }
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .icon-btn:hover,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .icon-btn:hover {
  background: color-mix(in srgb, #fff 62%, transparent);
  color: #0f172a;
}
[data-theme='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .brand-mark,
[data-theme-hint='light'] .site-header:not(.has-hero):not(.is-scrolled).has-banner .brand-mark { box-shadow: var(--shadow-sm); }

/* --- 2. 内页横幅：明亮浅蓝 + 白卡片 --- */
[data-theme='light'] .page-banner,
[data-theme='light'] .page-banner.has-banner,
[data-theme-hint='light'] .page-banner,
[data-theme-hint='light'] .page-banner.has-banner {
  background:
    radial-gradient(900px 360px at 8% -30%, color-mix(in srgb, #fff 50%, transparent), transparent 72%),
    linear-gradient(165deg, var(--banner-light) 0%, color-mix(in srgb, var(--banner-light) 45%, #fff) 100%) !important;
  border-bottom: 1px solid var(--banner-light-line);
}
[data-theme='light'] .page-banner-scrim,
[data-theme-hint='light'] .page-banner-scrim { display: none; }
/* 横幅本身已是浅色，底部渐隐不需要了 */
[data-theme='light'] .page-banner.has-banner::after,
[data-theme-hint='light'] .page-banner.has-banner::after { display: none; }
[data-theme='light'] .page-banner.has-banner .page-banner-inner,
[data-theme-hint='light'] .page-banner.has-banner .page-banner-inner { padding-bottom: 34px; }
/* 卡片实心白 + 浅蓝描边 */
[data-theme='light'] .page-banner.has-banner .page-banner-card,
[data-theme='light'] .page-banner .page-banner-card,
[data-theme-hint='light'] .page-banner.has-banner .page-banner-card,
[data-theme-hint='light'] .page-banner .page-banner-card {
  background: #fff;
  border: 1px solid var(--banner-light-line);
  box-shadow: 0 2px 12px color-mix(in srgb, #0f172a 8%, transparent);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
[data-theme='light'] .page-banner.has-banner .page-banner-title,
[data-theme='light'] .page-banner .page-banner-title,
[data-theme-hint='light'] .page-banner.has-banner .page-banner-title,
[data-theme-hint='light'] .page-banner .page-banner-title { color: #0f172a; }
[data-theme='light'] .page-banner.has-banner .page-banner-title .icon,
[data-theme='light'] .page-banner .page-banner-title .icon,
[data-theme-hint='light'] .page-banner.has-banner .page-banner-title .icon,
[data-theme-hint='light'] .page-banner .page-banner-title .icon { color: currentColor; }
[data-theme='light'] .page-banner.has-banner .page-banner-desc,
[data-theme='light'] .page-banner .page-banner-desc,
[data-theme-hint='light'] .page-banner.has-banner .page-banner-desc,
[data-theme-hint='light'] .page-banner .page-banner-desc { color: #475569; }
[data-theme='light'] .page-banner.has-banner .page-banner-desc strong,
[data-theme='light'] .page-banner .page-banner-desc strong,
[data-theme-hint='light'] .page-banner.has-banner .page-banner-desc strong,
[data-theme-hint='light'] .page-banner .page-banner-desc strong { color: var(--accent-text); }

/* --- 3. 窄屏抽屉导航 ---
   抽屉是自带实底（background: var(--bg-elev)）的浮层，不属于「导航有实底」，
   但它的链接会继承 hero 悬浮态的白字，浅色主题下就成了白底白字。
   所以这里在 ≤900px 时强制改回跟随主题的文字色。
   注意：抽屉关闭时不可见，但为了 tab 键可达性保持可读配色即可。 */
@media (max-width: 900px) {
  [data-theme='light'] .site-nav .nav-link,
  [data-theme-hint='light'] .site-nav .nav-link { color: #1e293b; }
  [data-theme='light'] .site-nav .nav-link:hover,
  [data-theme='light'] .site-nav .nav-link.is-active,
  [data-theme-hint='light'] .site-nav .nav-link:hover,
  [data-theme-hint='light'] .site-nav .nav-link.is-active {
    background: var(--accent-soft);
    color: var(--accent-text);
  }
  /* 抽屉底色在浅色下是纯白，给一点分隔层次 */
  [data-theme='light'] .site-nav,
  [data-theme-hint='light'] .site-nav {
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
  }
}



/* ==========================================================================
   Post single
   ========================================================================== */
.post-single { padding-bottom: 8px; }

.post-header { position: relative; margin-bottom: 26px; }

/* 顶部小标签：字数 / 分钟 / 资源类型 */
.post-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 9px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-soft);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-soft);
  transition: color .18s, border-color .18s, background .18s;
}
.chip .icon { color: var(--text-mute); }
.chip.is-accent {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 34%, transparent);
  color: var(--accent);
}
.chip.is-accent .icon { color: var(--accent); }
a.chip:hover { color: var(--accent); border-color: var(--accent); }

/* 标题：左侧竖条装饰 */
.post-title {
  position: relative;
  margin: 0 0 18px;
  padding-left: 18px;
  font-size: clamp(25px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.025em;
}
.post-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: .1em;
  bottom: .1em;
  width: 4px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 45%, var(--secondary)));
}

/* 元信息行 */
.post-metas { display: flex; flex-wrap: wrap; gap: 8px; }
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border-radius: 9px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-soft);
  font-size: 12.5px;
  color: var(--text-soft);
}
.meta-chip .icon { color: var(--text-mute); flex: none; }
.meta-links { display: inline-flex; flex-wrap: wrap; gap: 0 4px; }
.meta-links a { color: var(--text-soft); transition: color .18s; }
.meta-links a:hover { color: var(--accent); }

.post-intro {
  margin: 0 0 26px;
  padding: 14px 17px;
  border-radius: 10px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- Resource summary ---------- */
.resource-summary {
  margin: 0 0 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.summary-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  background: var(--bg-elev);
}
.summary-label { font-size: 12px; color: var(--text-mute); }
.summary-value { font-size: 14.5px; font-weight: 600; }


.post-content { font-size: 16px; line-height: 1.85; color: var(--text); }
.post-content > *:first-child { margin-top: 0; }

.post-content h2,
.post-content h3,
.post-content h4 {
  margin: 2em 0 .8em;
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.4;
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.post-content h2 {
  font-size: 23px;
  padding-bottom: .4em;
  border-bottom: 1px solid var(--border);
}
.post-content h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  margin-right: 10px;
  vertical-align: -2px;
  border-radius: 2px;
  background: var(--accent);
}
.post-content h3 { font-size: 19px; }
.post-content h4 { font-size: 16.5px; }

.post-content p { margin: 0 0 1.15em; }
.post-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  text-underline-offset: 3px;
  transition: text-decoration-color .18s;
}
.post-content a:hover { text-decoration-color: var(--accent); }

.post-content ul,
.post-content ol { margin: 0 0 1.2em; padding-left: 1.4em; }
.post-content li { margin: .4em 0; }
.post-content li::marker { color: var(--accent); }

.post-content blockquote {
  margin: 1.4em 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: var(--accent-soft);
  color: var(--text-soft);
}
.post-content blockquote p:last-child { margin-bottom: 0; }

.post-content img { border-radius: 12px; margin: 1.4em auto; box-shadow: var(--shadow-sm); }

.post-content hr { margin: 2.4em 0; border: none; border-top: 1px solid var(--border); }

.post-content code {
  padding: .18em .45em;
  border-radius: 6px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-soft);
  font-size: .88em;
  color: var(--accent-strong);
}
[data-theme='dark'] .post-content code { color: var(--accent-text); }

.post-content pre {
  position: relative;
  margin: 1.5em 0;
  padding: 18px 20px;
  border-radius: 12px;
  background: #0d1117;
  border: 1px solid #1f2530;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
  box-shadow: var(--shadow-sm);
}

/* ---------- macOS 窗口风格代码块 ---------- */
figure.highlight {
  position: relative;
  margin: 1.6em 0;
  padding-top: 42px;
  border-radius: 12px;
  background: #0d1117 !important;
  border: 1px solid #1f2530;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(8, 10, 16, .28);
}
/* 左上角红 / 黄 / 绿三个圆点 */
figure.highlight::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 16px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ff5f57;
  box-shadow: 20px 0 0 #febc2e, 40px 0 0 #28c840;
}
/* 底部一条细分隔线 */
figure.highlight::after {
  content: '';
  position: absolute;
  top: 42px;
  left: 0;
  right: 0;
  height: 1px;
  background: #1b222c;
}
figure.highlight table {
  width: 100%;
  margin: 0;
  border: none;
  border-collapse: collapse;
  border-radius: 0;
  overflow: visible;
  table-layout: fixed;
  font-size: 13.5px;
}
figure.highlight td { padding: 0; border: none; background: transparent; }
figure.highlight .gutter {
  width: 52px;
  white-space: nowrap;
  vertical-align: top;
  user-select: none;
  -webkit-user-select: none;
  background: #0b0f16;
  border-right: 1px solid #1b222c;
}
figure.highlight .gutter pre,
figure.highlight .code pre {
  margin: 0;
  padding: 13px 0 15px;
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  font-size: 13.5px;
  line-height: 1.7;
}
figure.highlight .gutter pre { padding-right: 12px; text-align: right; }
figure.highlight .code pre { padding-left: 16px; padding-right: 18px; overflow-x: auto; }
figure.highlight .gutter .line { color: #4d5866; }
figure.highlight .code .line { padding-left: 0; }

/* 代码语言角标（JS 注入） */
.code-lang {
  position: absolute;
  top: 12px;
  right: 62px;
  z-index: 2;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .05em;
  color: #7d8590;
  text-transform: uppercase;
  pointer-events: none;
}
.post-content pre code {
  padding: 0;
  border: none;
  background: transparent;
  color: #c9d1d9;
  font-size: inherit;
}

.post-content table {
  width: 100%;
  margin: 1.5em 0;
  border-collapse: collapse;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.post-content th,
.post-content td { padding: 10px 14px; border-bottom: 1px solid var(--border); text-align: left; }
.post-content th { background: var(--bg-sunken); font-weight: 600; }
.post-content tr:last-child td { border-bottom: none; }

.post-content iframe { max-width: 100%; border-radius: 12px; }

/* ---------- highlight.js theme (github-dark) ---------- */
.highlight { background: #0d1117 !important; color: #c9d1d9; }
.highlight .line { display: inline; }
.highlight .comment, .highlight .quote { color: #8b949e; font-style: italic; }
.highlight .keyword, .highlight .selector-tag, .highlight .literal, .highlight .section, .highlight .link { color: #ff7b72; }
.highlight .string, .highlight .title, .highlight .name, .highlight .type, .highlight .attribute, .highlight .symbol, .highlight .bullet, .highlight .addition, .highlight .variable, .highlight .template-tag, .highlight .template-variable { color: #a5d6ff; }
.highlight .number, .highlight .meta, .highlight .built_in, .highlight .builtin-name, .highlight .params { color: #79c0ff; }
.highlight .title.class_, .highlight .title.function_ { color: #d2a8ff; }
.highlight .attr, .highlight .selector-attr, .highlight .selector-class, .highlight .selector-id { color: #79c0ff; }
.highlight .deletion { color: #ffa198; background: rgba(248, 81, 73, .15); }
.highlight .addition { color: #7ee787; background: rgba(46, 160, 67, .15); }
.highlight .emphasis { font-style: italic; }
.highlight .strong { font-weight: 700; }

/* ---------- code copy ---------- */
.code-copy {
  position: absolute;
  top: 9px;
  right: 10px;
  z-index: 3;
  padding: 3px 9px;
  border: 1px solid #30363d;
  border-radius: 7px;
  background: #161b22;
  color: #8b949e;
  font-size: 12px;
  font-weight: 500;
  opacity: 0;
  transition: opacity .18s, color .18s, border-color .18s;
}
.post-content pre:hover > .code-copy,
figure.highlight:hover > .code-copy { opacity: 1; }
.code-copy:focus-visible { opacity: 1; }
.code-copy:hover { color: #c9d1d9; border-color: #4b5563; }
.code-copy.is-done { color: #3fb950; border-color: #238636; opacity: 1; }

/* ---------- TOC（右栏卡片 + 序号） ---------- */
.toc-body { counter-reset: toc; }
.toc-body ol { margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.toc-body ol ol { padding-left: 16px; margin-top: 3px; }
.toc-body li { position: relative; margin: 3px 0; }
.toc-body a {
  display: block;
  padding: 4px 8px 4px 26px;
  border-radius: 8px;
  font-size: 12.8px;
  line-height: 1.55;
  color: var(--text-soft);
  transition: color .18s var(--ease), background .18s var(--ease);
}
.toc-body > ol > li > a::before {
  counter-increment: toc;
  content: counter(toc);
  position: absolute;
  left: 4px;
  top: 5px;
  width: 16px;
  text-align: right;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-mute);
  font-variant-numeric: tabular-nums;
}
.toc-body a:hover { color: var(--accent); background: var(--accent-soft); }
.toc-body a.is-active {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-soft);
}
.toc-body > ol > li > a.is-active::before { color: var(--accent); }

/* ---------- Pan / download block ---------- */
.pan-block {
  margin: 40px 0 0;
  padding: 22px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.pan-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.pan-head h2 {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  padding: 0;
  border: none;
  font-size: 18px;
  font-weight: 700;
}
.pan-head h2::before { display: none; }
.pan-head h2 .icon { color: var(--accent); }
.pan-master-pwd { font-size: 13px; color: var(--text-soft); }
.pan-master-pwd code {
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}
.pan-notice {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0 0 16px;
  padding: 10px 13px;
  border-radius: 10px;
  background: rgba(245, 158, 11, .1);
  border: 1px solid rgba(245, 158, 11, .28);
  font-size: 13px;
  color: var(--text-soft);
}
.pan-notice .icon { color: var(--warn); margin-top: 3px; }

.pan-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.pan-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-sunken);
  transition: border-color .18s, background .18s;
}
.pan-item:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.pan-item-main { display: flex; align-items: center; gap: 12px; min-width: 0; flex: 1; }
.pan-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
}
.pan-item-info { min-width: 0; }
.pan-item-info strong { display: block; font-size: 14.5px; font-weight: 600; }
.pan-item-tags { display: flex; flex-wrap: wrap; gap: 5px 10px; margin-top: 2px; font-size: 12.5px; color: var(--text-mute); }
.pan-pwd code {
  padding: 1px 7px;
  border-radius: 5px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
  letter-spacing: .04em;
}
.pan-item-actions { display: flex; gap: 8px; flex: none; }
.pan-empty {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 16px;
  border-radius: 10px;
  background: var(--bg-sunken);
  font-size: 14px;
  color: var(--text-mute);
}

@media (max-width: 640px) {
  .resource-summary { margin-bottom: 22px; }
  .pan-block { padding: 16px; }
  .pan-item-actions { width: 100%; }
  .pan-item-actions .btn { flex: 1; }
}

/* ---------- Post tags / copyright / nav ---------- */
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 32px 0 0; }
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-soft);
  transition: all .18s var(--ease);
}
.tag-chip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }

.post-copyright {
  margin: 26px 0 0;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  font-size: 13.5px;
}
.copyright-item { display: flex; gap: 12px; padding: 4px 0; }
.copyright-label { flex: none; width: 42px; color: var(--text-mute); }
.copyright-value { min-width: 0; color: var(--text-soft); word-break: break-word; }
.copyright-value a { color: var(--accent); }

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 26px 0 0;
}
.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-elev);
  transition: all .2s var(--ease);
}
.post-nav-item:not(.is-empty):hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.post-nav-item strong { font-size: 14px; font-weight: 600; line-height: 1.5; }
.post-nav-next { text-align: right; }
.post-nav-next .post-nav-label { justify-content: flex-end; }
.post-nav-label { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; color: var(--text-mute); }
.post-nav-prev .post-nav-label .icon { transform: rotate(180deg); }

/* ---------- 评论区（giscus） ---------- */
.post-comments {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.comments-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}
.comments-title .icon { color: var(--accent); }
.post-comments .giscus,
.post-comments .giscus-frame { width: 100%; }

@media (max-width: 640px) {
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-next { text-align: left; }
  .post-nav-next .post-nav-label { justify-content: flex-start; }
}

/* ==========================================================================
   正文增强组件（下载卡片 / 链接组 / 卡片网格 / 提示块）
   供正文里手写 HTML 使用，统一走主题变量，深浅色自动跟随
   ========================================================================== */
.hd-dl,
.hd-download {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 22px 0;
}
.hd-dl-main,
.hd-download-btn {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  text-decoration: none !important;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.hd-dl-main:hover,
.hd-download-btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.hd-dl-ico,
.hd-download-icon {
  flex: none;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 35%, transparent);
}
.hd-dl-txt,
.hd-download-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.hd-dl-txt strong,
.hd-download-text strong { font-size: 16px; color: var(--text); }
.hd-dl-txt small,
.hd-download-text small { font-size: 13px; color: var(--text-soft); }
.hd-dl-doc {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  text-decoration: none !important;
  transition: transform .15s var(--ease), border-color .15s var(--ease);
}
.hd-dl-doc:hover { transform: translateY(-1px); border-color: var(--accent); color: var(--accent); }

.hd-links { display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0; }
.hd-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  text-decoration: none !important;
  transition: transform .15s var(--ease), border-color .15s var(--ease);
}
.hd-link:hover { transform: translateY(-1px); border-color: var(--accent); color: var(--accent); }

/* 卡片网格（关于页等内容用） */
.ab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 14px;
  margin: 20px 0;
}
.ab-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid var(--border);
}
.ab-card-icon { flex: none; width: 22px; height: 22px; font-size: 22px; line-height: 1.2; color: var(--accent); }
.ab-card-title { font-weight: 600; line-height: 1.4; margin-bottom: 4px; color: var(--text); }
.ab-card-desc { font-size: 13.5px; line-height: 1.65; color: var(--text-soft); }

/* 提示块 */
.admonition {
  padding: 14px 18px;
  margin: 20px 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--bg-sunken);
}
.admonition.warning { border-left-color: var(--warn); }
.admonition-title { font-weight: 600; margin-bottom: 6px; color: var(--text); }
.admonition > p { margin: .5rem 0; }
.admonition > p:first-child { margin-top: 0; }
.admonition > p:last-child { margin-bottom: 0; }

/* ==========================================================================
   Rail cards（左右侧栏卡片）
   ========================================================================== */
.rail-card {
  padding: 15px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.rail-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.rail-title {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .01em;
}
.rail-title .icon { color: var(--accent); }

/* ---------- 个人名片 ---------- */
/* 尺寸可经配置覆盖：--avatar-size / --icon-size（由 profile.ejs 内联输出） */
.profile-card { text-align: center; padding-top: 18px; }
.profile-card .rail-head { text-align: left; }
.profile-avatar-wrap {
  position: relative;
  width: var(--avatar-size, 96px);
  height: var(--avatar-size, 96px);
  margin: 0 auto 12px;
}
.profile-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--bg-elev);
  box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow-sm);
}
/* 头像角标（如「博主」「V」等） */
.profile-badge {
  position: absolute;
  right: -2px;
  bottom: -2px;
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.6;
  color: #fff;
  background: var(--accent);
  border: 2px solid var(--bg-elev);
  box-shadow: var(--shadow-sm);
}
.profile-name { margin: 0 0 6px; font-size: 15.5px; font-weight: 700; }
.profile-bio {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--text-mute);
}
.profile-social-title {
  margin: 14px 0 0;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-mute);
}
.profile-social {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.profile-social-title + .profile-social { margin-top: 8px; }
.social-btn {
  display: grid;
  place-items: center;
  width: calc(var(--icon-size, 19px) + 15px);
  height: calc(var(--icon-size, 19px) + 15px);
  border-radius: 10px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-soft);
  color: var(--text-soft);
  transition: all .18s var(--ease);
}
.social-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

/* ---------- 音乐播放器 ---------- */
.music-body { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.music-cover {
  width: 48px;
  height: 48px;
  flex: none;
  border-radius: 10px;
  object-fit: cover;
  background: var(--bg-sunken);
}
.music-meta { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.music-name {
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.music-artist {
  font-size: 12px;
  color: var(--text-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.music-progress {
  position: relative;
  height: 5px;
  border-radius: 999px;
  background: var(--bg-sunken);
  cursor: pointer;
}
.music-progress-fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--accent);
  transition: width .1s linear;
}
.music-times {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  font-size: 11px;
  color: var(--text-mute);
  font-variant-numeric: tabular-nums;
}
.music-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-top: 10px;
}
.music-btn {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 9px;
  background: transparent;
  color: var(--text-soft);
  transition: background .18s, color .18s;
}
.music-btn:hover { background: var(--accent-soft); color: var(--accent); }
.music-btn.is-primary {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 3px 12px var(--accent-glow);
}
.music-btn.is-primary:hover { background: var(--accent-strong); color: #fff; }
.music-btn.is-on { color: var(--accent); }
.music-card .music-icon-pause { display: none; }
.music-card.is-playing .music-icon-pause { display: inline-flex; }
.music-card.is-playing .music-icon-play { display: none; }
.music-volume {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 10px;
  color: var(--text-mute);
}
.music-volume-track {
  position: relative;
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: var(--bg-sunken);
  cursor: pointer;
}
.music-volume-fill {
  height: 100%;
  width: 80%;
  border-radius: 999px;
  background: var(--text-mute);
}
#music-audio { display: none; }

/* ---------- 分类列表 ---------- */
.cat-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 2px; }
.cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 9px;
  border-radius: 9px;
  font-size: 13px;
  color: var(--text-soft);
  transition: background .18s, color .18s;
}
.cat-list a:hover { background: var(--accent-soft); color: var(--accent); }
.cat-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat-count {
  flex: none;
  min-width: 22px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--accent-soft);
  font-size: 11.5px;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
}

/* ---------- 标签云 ---------- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 7px; }

/* ---------- 统计 ---------- */
.stat-rows { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; }
.stat-rows li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 2px;
}
.stat-rows li + li { border-top: 1px solid var(--border-soft); }
.stat-label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-soft); }
.stat-label .icon { color: var(--accent); opacity: .9; }
.stat-value { font-size: 13.5px; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat-value.is-accent { color: var(--accent); font-weight: 700; }
.stat-unit { margin-left: 2px; font-style: normal; font-size: 11.5px; font-weight: 500; color: var(--text-mute); }

/* ---------- 目录卡片 ---------- */
.toc-card { max-height: 60vh; display: flex; flex-direction: column; }
.toc-card .toc-body { overflow-y: auto; scrollbar-width: none; }

/* ---------- 正文内嵌目录（右栏收起时显示） ---------- */
.toc-inline {
  display: none;
  margin: 0 0 26px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  box-shadow: var(--shadow-sm);
}
.toc-inline-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  list-style: none;
}
.toc-inline-head::-webkit-details-marker { display: none; }
.toc-inline-title {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 700;
}
.toc-inline-title .icon { color: var(--accent); }
.toc-inline-hint { font-size: 11.5px; color: var(--text-mute); }
.toc-inline-body { margin-top: 10px; }
@media (max-width: 1280px) {
  .toc-inline { display: block; }
}
@media (max-width: 640px) {
  .toc-inline { padding: 12px 13px; margin-bottom: 20px; }
}

/* ---------- 日历卡片 ---------- */
.calendar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.calendar-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text);
}
.calendar-nav {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.calendar-nav button {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--border-soft);
  border-radius: 7px;
  background: transparent;
  color: var(--text-soft);
  transition: color .18s, border-color .18s, background .18s;
}
.calendar-nav button:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.calendar-nav .icon { width: 13px; height: 13px; }
.calendar-nav .icon-flip { display: inline-flex; transform: rotate(180deg); }
.calendar-weekdays,
.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}
.calendar-weekdays { margin-bottom: 4px; }
.calendar-weekdays span {
  padding: 2px 0;
  text-align: center;
  font-size: 11px;
  color: var(--text-mute);
}
.calendar-day {
  position: relative;
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 8px;
  background: transparent;
  font-size: 12px;
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
  transition: background .18s, color .18s;
}
.calendar-day.is-blank { visibility: hidden; }
.calendar-day:not(.is-blank):hover { background: var(--accent-soft); color: var(--accent); }
.calendar-day.is-today {
  color: var(--accent);
  font-weight: 700;
  box-shadow: inset 0 0 0 1px var(--accent);
}
.calendar-day.has-post::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateX(-50%);
}
.calendar-recent {
  margin: 10px 0 0;
  padding: 9px 0 0;
  list-style: none;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.calendar-recent a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-soft);
}
.calendar-recent a:hover { color: var(--accent); }
.calendar-recent .recent-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.calendar-recent .recent-date { flex: none; color: var(--text-mute); font-size: 11.5px; font-variant-numeric: tabular-nums; }

/* ---------- 站点信息卡片 ---------- */
.info-rows { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; }
.info-rows li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 0;
}
.info-rows li + li { border-top: 1px solid var(--border-soft); }
.info-label { display: inline-flex; align-items: center; gap: 7px; font-size: 12.8px; color: var(--text-soft); }
.info-label .icon { color: var(--accent); opacity: .9; }
.info-value { font-size: 12.8px; font-weight: 600; text-align: right; color: var(--text); }
.info-domain {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 11px;
  padding: 11px 12px;
  border-radius: calc(var(--radius) - 5px);
  background: var(--accent-soft);
}
.info-domain-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
}
.info-domain-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.info-domain-text small { font-size: 11px; color: var(--text-mute); }
.info-domain-text strong {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* ==========================================================================
   Pagination
   ========================================================================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 40px 0 0;
}
.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-soft);
  transition: all .18s var(--ease);
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-btn.is-disabled { opacity: .45; pointer-events: none; }
.page-prev .icon { transform: rotate(180deg); }
.page-numbers { display: inline-flex; align-items: center; gap: 5px; }
.page-num {
  display: grid;
  place-items: center;
  min-width: 34px;
  height: 34px;
  padding: 0 6px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-soft);
  transition: all .18s var(--ease);
}
.page-num:hover { border-color: var(--accent); color: var(--accent); }
.page-num.is-current {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 3px 10px var(--accent-glow);
}
.page-ellipsis { color: var(--text-mute); padding: 0 2px; }

/* ==========================================================================
   Archive
   ========================================================================== */
.archive-year { margin-bottom: 28px; }
.archive-year-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.year-num { font-size: 22px; font-weight: 800; letter-spacing: -.02em; color: var(--accent); }
.year-count { font-size: 12.5px; color: var(--text-mute); }
.archive-list { margin: 0; padding: 0; list-style: none; }
.archive-item { display: flex; align-items: baseline; gap: 14px; padding: 8px 0; border-bottom: 1px dashed var(--border-soft); }
.archive-item:last-child { border-bottom: none; }
.archive-date { flex: none; width: 48px; font-size: 12.5px; color: var(--text-mute); font-variant-numeric: tabular-nums; }
.archive-link { display: flex; align-items: center; gap: 9px; min-width: 0; flex: 1; }
.archive-title { font-size: 14.5px; transition: color .18s; }
.archive-link:hover .archive-title { color: var(--accent); }
.archive-badge {
  flex: none;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-style: normal;
  font-weight: 600;
}

/* ==========================================================================
   Empty state
   ========================================================================== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 56px 20px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px dashed var(--border);
  color: var(--text-mute);
  text-align: center;
}
.empty-state p { margin: 0; font-size: 14px; }
.empty-state code {
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--bg-sunken);
  font-size: 13px;
  color: var(--accent);
}

/* ==========================================================================
   Search overlay
   ========================================================================== */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: flex;
  justify-content: center;
  padding: 12vh 20px 40px;
  background: color-mix(in srgb, #0b0d12 62%, transparent);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fade-in .18s var(--ease);
}
.search-overlay[hidden] { display: none; }

.search-panel {
  width: 100%;
  max-width: 640px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: pop-in .22s var(--ease);
}
.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.search-input-wrap > .icon { color: var(--text-mute); flex: none; }
#search-input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  font-size: 16px;
  color: var(--text);
}
#search-input::placeholder { color: var(--text-mute); }
.search-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  font-size: 12.5px;
  color: var(--text-mute);
  background: var(--bg-sunken);
  border-bottom: 1px solid var(--border-soft);
}
.search-meta kbd {
  padding: 1px 7px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  font-size: 11px;
}
.search-results { flex: 1; overflow-y: auto; padding: 8px; }
.search-result {
  display: block;
  padding: 11px 13px;
  border-radius: 10px;
  transition: background .15s;
}
.search-result:hover { background: var(--accent-soft); }
.search-result-title { font-size: 14.5px; font-weight: 600; line-height: 1.5; }
.search-result-title mark { background: transparent; color: var(--accent); font-weight: 700; }
.search-result-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 3px; font-size: 12px; color: var(--text-mute); }
.search-result-meta .badge {
  padding: 0 7px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.search-hint { padding: 28px 16px; text-align: center; font-size: 13.5px; color: var(--text-mute); }

/* ==========================================================================
   Footer / back to top
   ========================================================================== */
.site-footer {
  margin-top: 20px;
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 34px 24px 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 22px;
}
.footer-brand { max-width: 380px; }
.footer-brand strong { font-size: 15.5px; font-weight: 700; }
.footer-brand p { margin: 6px 0 0; font-size: 13px; line-height: 1.7; color: var(--text-mute); }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; align-content: flex-start; }
.footer-links a { display: inline-flex; align-items: center; gap: 5px; font-size: 13.5px; color: var(--text-soft); transition: color .18s; }
.footer-links a .icon { width: 14px; height: 14px; opacity: .85; flex: none; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  border-top: 1px solid var(--border-soft);
  font-size: 12.5px;
  color: var(--text-mute);
}
.footer-bottom a { color: var(--text-soft); }
.footer-bottom a:hover { color: var(--accent); }

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-elev);
  color: var(--text-soft);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .22s var(--ease);
}
.back-to-top .icon { transform: rotate(-90deg); }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { color: var(--accent); border-color: var(--accent); }

@media (max-width: 640px) {
  .footer-inner { padding: 26px 16px 18px; }
  .footer-bottom { padding: 12px 16px 20px; }
  .back-to-top { right: 14px; bottom: 14px; }
}

/* ==========================================================================
   Motion
   ========================================================================== */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(-10px) scale(.98); } to { opacity: 1; transform: none; } }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}