/* ==========================================================================
   AINav · 开发者 AI 收藏夹 - 全栈自包含样式库 (无需任何外网 CDN)
   ========================================================================== */

/* ==========================================================================
   全栈配色系统：明亮模式 (Light Mode - 默认) 与 深色极客模式 (Dark Mode)
   ========================================================================== */

/* 1. 浅色模式 (Light Mode - 清新明亮、高对比度) */
/* 1. 浅色模式 (Light Mode - 清新高对比度、无杂乱阴影) */
:root,
html.light,
:root.light {
  /* 基础字体与尺寸规范 (System Grotesk + Monospace) */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-reveal: cubic-bezier(0.16, 1, 0.3, 1);

  --s-4: 4px;
  --s-8: 8px;
  --s-12: 12px;
  --s-16: 16px;
  --s-24: 24px;
  --s-32: 32px;
  --s-48: 48px;
  --s-64: 64px;
  --s-96: 96px;
  --s-128: 128px;

  --fs-hero: clamp(36px, 6vw, 64px);
  --fs-title: clamp(22px, 3.5vw, 30px);
  --fs-body: 14px;
  --fs-note: 12px;
  --library-rail: 210px;

  /* 表面层级 (Surface & Elevation) */
  --bg-deepest: #f8fafc;
  --bg-base: #f1f5f9;
  --bg-raised: #ffffff;

  --bg-page: #f8fafc;
  --bg-header: rgba(248, 250, 252, 0.88);
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-code: #f1f5f9;

  --border-color: rgba(15, 23, 42, 0.08);
  --border-hover: rgba(15, 23, 42, 0.2);

  --text-main: #0f172a;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-dim: #64748b;
  --text-muted: #94a3b8;
  --text-code: #0f172a;

  /* 品牌核心与功能色 (单焦点蓝 + 金星 + 状态绿) */
  --flame: #2563eb;
  --flame-rgb: 37, 99, 235;
  --ember: #1d4ed8;
  --ember-rgb: 29, 78, 216;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-subtle: rgba(37, 99, 235, 0.07);
  --primary-border: rgba(37, 99, 235, 0.22);
  --primary-text: #2563eb;

  --emerald: #059669;
  --emerald-subtle: rgba(5, 150, 105, 0.08);
  --amber: #f59e0b;
  --amber-subtle: rgba(245, 158, 11, 0.1);
  --cyan: #0284c7;
  --cyan-subtle: rgba(2, 132, 199, 0.08);
  --red: #dc2626;
  --red-subtle: rgba(220, 38, 38, 0.08);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 14px -2px rgba(15, 23, 42, 0.06);
  --shadow-xl: 0 20px 30px -8px rgba(15, 23, 42, 0.08);
  --glow: 0 0 20px -4px rgba(37, 99, 235, 0.12);
}

/* 2. 深色极客模式 (Dark Mode - Linear / Raycast 级深空黑曜石质感) */
html.dark,
:root.dark {
  --bg-deepest: #08090d;
  --bg-base: #0d0f17;
  --bg-raised: #121520;

  --bg-page: #08090d;
  --bg-header: rgba(8, 9, 13, 0.84);
  --bg-card: #0f121a;
  --bg-card-hover: #131722;
  --bg-subtle: #141824;
  --bg-code: #0b0d13;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.2);

  --text-main: #f9fafb;
  --text: #f9fafb;
  --text-secondary: #d1d5db;
  --text-dim: #9ca3af;
  --text-muted: #6b7280;
  --text-code: #f3f4f6;

  --flame: #3b82f6;
  --flame-rgb: 59, 130, 246;
  --ember: #60a5fa;
  --ember-rgb: 96, 165, 250;

  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-subtle: rgba(59, 130, 246, 0.12);
  --primary-border: rgba(59, 130, 246, 0.32);
  --primary-text: #60a5fa;

  --emerald: #10b981;
  --emerald-subtle: rgba(16, 185, 129, 0.12);
  --amber: #f59e0b;
  --amber-subtle: rgba(245, 158, 11, 0.15);
  --cyan: #06b6d4;
  --cyan-subtle: rgba(6, 182, 212, 0.12);
  --red: #ef4444;
  --red-subtle: rgba(239, 68, 68, 0.12);

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.45);
  --shadow-md: 0 4px 16px -2px rgba(0, 0, 0, 0.55);
  --shadow-xl: 0 24px 48px -12px rgba(0, 0, 0, 0.75);
  --glow: 0 0 24px -4px rgba(59, 130, 246, 0.22);
}

/* ==========================================================================
   基础 Reset & 通用排版
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  font-size: 15px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

code, pre, kbd, .font-mono {
  font-family: var(--font-mono);
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ==========================================================================
   标准容器与栅格系统 (自包含无需外网)
   ========================================================================== */
.max-w-7xl {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
  width: 100%;
}

.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 44rem; }
.max-w-3xl { max-width: 48rem; }
.w-full { width: 100%; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 0%; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.shrink-0 { flex-shrink: 0; }

.grid {
  display: grid;
  gap: 1rem;
}
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }

@media (min-width: 640px) {
  .sm\:inline { display: inline !important; }
}

@media (min-width: 768px) {
  .md\:block { display: block !important; }
  .md\:flex { display: flex !important; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:p-8 { padding: 2rem !important; }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* 间距 Helpers */
.gap-1 { gap: 0.25rem; }
.gap-1\.5 { gap: 0.375rem; }
.gap-2 { gap: 0.5rem; }
.gap-2\.5 { gap: 0.625rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.p-1 { padding: 0.25rem; }
.p-1\.5 { padding: 0.375rem; }
.p-2 { padding: 0.5rem; }
.p-2\.5 { padding: 0.625rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }

.px-1\.5 { padding-left: 0.375rem; padding-right: 0.375rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-2\.5 { padding-left: 0.625rem; padding-right: 0.625rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-0\.5 { padding-top: 0.125rem; padding-bottom: 0.125rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-1\.5 { padding-top: 0.375rem; padding-bottom: 0.375rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2\.5 { padding-top: 0.625rem; padding-bottom: 0.625rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-1\.5 { margin-bottom: 0.375rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-14 { margin-bottom: 3.5rem; }
.mt-0\.5 { margin-top: 0.125rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mr-1 { margin-right: 0.25rem; }

.pt-2 { padding-top: 0.5rem; }
.pt-3 { padding-top: 0.75rem; }
.pt-6 { padding-top: 1.5rem; }
.border-t { border-top: 1px solid var(--border-color); }
.border-b { border-bottom: 1px solid var(--border-color); }

.space-y-1 > * + * { margin-top: 0.25rem; }
.space-y-1\.5 > * + * { margin-top: 0.375rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-5 > * + * { margin-top: 1.25rem; }
.space-y-10 > * + * { margin-top: 2.5rem; }

/* 文本与字体 */
.text-\[10px\] { font-size: 10px; line-height: 14px; }
.text-\[11px\] { font-size: 11px; line-height: 15px; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.font-black { font-weight: 900; }
.uppercase { text-transform: uppercase; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.italic { font-style: italic; }
.text-center { text-align: center; }

.text-zinc-200 { color: var(--text-main); }
.text-zinc-300 { color: var(--text-secondary); }
.text-zinc-400 { color: var(--text-muted); }
.text-zinc-500 { color: var(--text-muted); }
.text-zinc-600 { color: var(--text-secondary); }
.text-zinc-700 { color: var(--text-main); }
.text-zinc-800 { color: var(--text-main); }
.text-zinc-900 { color: var(--text-main); }
.text-white { color: var(--text-main); }

.text-blue-500, .text-blue-600 { color: var(--primary); }
.text-amber-400, .text-amber-500, .text-amber-600 { color: var(--amber); }
.text-emerald-500, .text-emerald-600, .text-emerald-700 { color: var(--emerald); }
.text-red-500, .text-red-700, .text-rose-500, .text-rose-600, .text-rose-700 { color: var(--red); }
.text-teal-500, .text-teal-600, .text-teal-700 { color: var(--flame); }
.text-cyan-500, .text-cyan-600, .text-cyan-700 { color: var(--cyan); }
.text-orange-500, .text-orange-600 { color: var(--ember); }

/* 圆角与边框 */
.rounded { border-radius: 0.25rem; }
.rounded-md { border-radius: 0.375rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

.border { border: 1px solid var(--border-color); }
.border-transparent { border-color: transparent; }

/* 背景与高亮 */
.bg-white { background-color: var(--bg-card); }
.bg-zinc-50 { background-color: var(--bg-page); }
.bg-zinc-100 { background-color: var(--bg-subtle); }
.bg-zinc-800 { background-color: var(--bg-subtle); }
.bg-zinc-900 { background-color: var(--bg-card); }
.bg-zinc-950 { background-color: var(--bg-page); }

.bg-blue-600 { background-color: var(--primary); }
.bg-blue-600:hover { background-color: var(--primary-hover); }

.bg-blue-50, .bg-blue-100 { background-color: var(--primary-subtle); color: var(--primary-text); }
.bg-emerald-50, .bg-emerald-100 { background-color: var(--emerald-subtle); color: var(--emerald); }
.bg-amber-50, .bg-amber-100 { background-color: var(--amber-subtle); color: var(--amber); }
.bg-red-50, .bg-red-100, .bg-rose-50 { background-color: var(--red-subtle); color: var(--red); }
.bg-teal-50 { background-color: rgba(var(--flame-rgb), 0.1); color: var(--flame); }
.bg-cyan-50 { background-color: var(--cyan-subtle); color: var(--cyan); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-xl, .shadow-2xl { box-shadow: var(--shadow-xl); }

/* ==========================================================================
   组件级专属样式 (精工细作)
   ========================================================================== */

/* 顶部吸顶导航栏 */
header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--bg-header);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.h-16 { height: 4rem; }

/* 搜索输入框 */
#search-input {
  width: 100%;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.55rem 6rem 0.55rem 2.4rem;
  border-radius: 0.5rem;
  font-size: 0.8rem;
  transition: all 0.2s ease;
  outline: none;
}
#search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
  background-color: var(--bg-card);
}
#search-input::placeholder {
  color: var(--text-muted);
}

.relative { position: relative; }
.absolute { position: absolute; }
.inset-y-0 { top: 0; bottom: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.right-14 { right: 3.5rem; }
.pl-3\.5 { padding-left: 0.875rem; }
.pl-10 { padding-left: 2.5rem; }
.pr-2 { padding-right: 0.5rem; }
.pr-3 { padding-right: 0.75rem; }
.pr-24 { padding-right: 6rem; }
.pointer-events-none { pointer-events: none; }

kbd {
  display: inline-block;
  padding: 0.1rem 0.35rem;
  font-size: 10px;
  font-family: var(--font-mono);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.25rem;
  color: var(--text-muted);
}

/* 分类导航 */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }
.whitespace-nowrap { white-space: nowrap; }

.workspace-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  align-items: start;
  gap: 1.5rem;
}

.workspace-main {
  min-width: 0;
}

.category-rail {
  position: sticky;
  top: 5.5rem;
  padding: 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 0.9rem;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.category-rail-heading {
  padding: 0.25rem 0.65rem 0.7rem;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.category-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-link {
  width: 100%;
  min-height: 2.45rem;
  padding: 0.55rem 0.65rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: all 0.15s ease;
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.55rem;
  border-left: 2px solid transparent;
  border-radius: 0.5rem;
  text-align: left;
}
.nav-link:hover {
  color: var(--primary);
  background: var(--bg-subtle);
}
.nav-link.is-active {
  color: var(--primary);
  background: var(--primary-subtle);
  border-left-color: var(--primary);
  font-weight: 700;
}
.nav-link-external {
  color: var(--ember);
}
.nav-index {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

@media (max-width: 899px) {
  .workspace-layout {
    display: block;
  }

  .category-rail {
    position: sticky;
    top: 4rem;
    z-index: 30;
    margin: -0.4rem 0 1rem;
    padding: 0.45rem;
    border-radius: 0.75rem;
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
  }

  .category-rail-heading {
    display: none;
  }

  .category-nav {
    flex-direction: row;
    width: max-content;
  }

  .nav-link {
    width: auto;
    min-height: 2.2rem;
    grid-template-columns: 0.9rem auto;
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid transparent;
  }

  .nav-link.is-active {
    border-bottom-color: var(--primary);
  }

  .nav-index {
    display: none;
  }
}

/* 卡片容器与悬浮动效 */
.card-hover-effect {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.card-hover-effect:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md), var(--glow);
  background-color: var(--bg-card-hover);
}

/* 代码块 */
pre {
  background-color: var(--bg-code) !important;
  color: var(--text-code);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.6rem 0.75rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  line-height: 1.45;
  overflow-x: auto;
}
code {
  font-family: var(--font-mono);
}

/* 链接与按钮通用 */
a, button {
  transition: all 0.15s ease;
}
.btn-entrance {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 0.375rem;
  background-color: var(--bg-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-entrance:hover {
  background-color: var(--primary);
  color: var(--text);
  border-color: var(--primary);
}

.hidden { display: none !important; }

/* SVG 图标通用尺寸 */
svg.icon {
  width: 1rem;
  height: 1rem;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  display: inline-block;
  vertical-align: middle;
}
svg.icon[fill="currentColor"],
svg.icon.is-filled {
  fill: currentColor;
}
svg.icon-sm { width: 0.85rem; height: 0.85rem; }
svg.icon-lg { width: 1.25rem; height: 1.25rem; }

/* 收藏按钮专用：极简纯净星星，无任何背景框与边框 */
.btn-bookmark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  padding: 0;
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
  outline: none !important;
  color: var(--text-muted);
  cursor: pointer;
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

.btn-bookmark:hover {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  transform: scale(1.15);
}

/* 未收藏状态：清爽镂空五角星 */
.btn-bookmark .bookmark-star-icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: none !important;
  stroke: #71717a !important;
  stroke-width: 1.75 !important;
  transition: stroke 0.15s ease, fill 0.15s ease;
}

.btn-bookmark:hover .bookmark-star-icon {
  stroke: #f59e0b !important;
}

/* 已收藏状态：纯粹实心金黄五角星，零背景框，零边框 */
.btn-bookmark.is-saved,
.btn-bookmark.is-saved:hover {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

.btn-bookmark.is-saved .bookmark-star-icon,
.bookmark-star-icon.is-filled {
  width: 1.25rem;
  height: 1.25rem;
  fill: #f59e0b !important;
  stroke: #f59e0b !important;
  stroke-width: 1 !important;
  filter: none !important;
}

/* 浅色模式适配：同样无任何背景框，实心金黄色 */
html.light .btn-bookmark,
html.light .btn-bookmark:hover,
html.light .btn-bookmark.is-saved,
html.light .btn-bookmark.is-saved:hover {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

html.light .btn-bookmark .bookmark-star-icon {
  stroke: #9ca3af !important;
}

html.light .btn-bookmark:hover .bookmark-star-icon {
  stroke: #f59e0b !important;
}

html.light .btn-bookmark.is-saved .bookmark-star-icon,
html.light .bookmark-star-icon.is-filled {
  fill: #f59e0b !important;
  stroke: #d97706 !important;
  stroke-width: 1 !important;
  filter: none !important;
}

/* 文本截断 */
.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 表格矩阵 */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
th {
  text-align: left;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  font-weight: 600;
}
td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}
tr:hover td {
  background-color: var(--bg-subtle);
}

/* 霓虹与微光效果 */
.glow-subtle {
  box-shadow: var(--glow);
}

/* ==========================================================================
   页面结构与排版系统
   ========================================================================== */

html { font-size: 16px; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg-deepest);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.8;
}

footer {
  margin-top: var(--s-64);
  padding: var(--s-24);
  color: var(--text-dim);
  font-size: var(--fs-note);
  text-align: center;
}

.library-page {
  justify-content: flex-start;
  gap: var(--s-24);
  padding-top: var(--s-32);
}

.library-topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.75fr);
  gap: var(--s-24);
  align-items: end;
}

.library-topbar > div:first-child > p:last-child {
  margin-top: var(--s-8);
  color: var(--text-dim);
  font-size: var(--fs-note);
}

.eyebrow {
  color: var(--flame);
  font-size: var(--fs-note);
  font-weight: 700;
  letter-spacing: 0.16em;
}

.library-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--s-8);
}

.search-box {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  min-width: 0;
  height: 38px;
  border: 1px solid var(--border-color);
  border-radius: var(--s-8);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
}

.search-icon {
  padding-left: 10px;
  padding-right: 4px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1;
}

#search-input {
  min-width: 0;
  padding: 8px 10px;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
}

#search-input::placeholder {
  color: var(--text-muted);
  font-size: 13px;
}

#search-input:focus {
  border: 0;
  background: transparent;
  box-shadow: none;
  outline: none;
}

.search-box kbd {
  margin-right: 8px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.quick-tags {
  grid-column: 1 / -1;
  display: flex;
  gap: var(--s-8);
  overflow-x: auto;
}

.workspace-layout {
  display: grid;
  grid-template-columns: var(--library-rail) minmax(0, 1fr);
  align-items: start;
  gap: var(--s-24);
}

.category-rail {
  position: sticky;
  top: 0;
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--s-12);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.category-rail-heading {
  padding: 8px 10px 6px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.category-nav {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-link {
  display: grid;
  grid-template-columns: var(--s-8) minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 38px;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--s-8);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  transition: color 0.15s var(--ease-spring), background-color 0.15s var(--ease-spring), border-color 0.15s var(--ease-spring);
}

.nav-mark {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-color);
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.nav-link:hover {
  color: var(--text-main);
  background: var(--bg-subtle);
  border-color: var(--border-color);
}

.nav-link.is-active {
  color: var(--primary);
  border-color: var(--primary-border);
  background: var(--primary-subtle);
  font-weight: 600;
}

.nav-link.is-active .nav-mark {
  background: var(--primary);
  transform: scale(1.2);
  box-shadow: 0 0 8px var(--primary);
}

.nav-link-external { color: var(--text-muted); }
.nav-index {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: 0.75;
}

.workspace-main { min-width: 0; }

.card-hover-effect {
  position: relative;
  overflow: hidden;
  padding: var(--s-16);
  border: 1px solid var(--border-color);
  border-radius: var(--s-12);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s var(--ease-spring),
              transform 0.2s var(--ease-spring),
              box-shadow 0.2s var(--ease-spring);
}

.card-hover-effect::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

html.light .card-hover-effect::before {
  background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.2), transparent);
}

.card-hover-effect:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md), var(--glow);
  transform: translateY(-2px);
}

.card-hover-effect:hover::before {
  opacity: 1;
}

.btn-entrance {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 34px;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: var(--s-8);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.btn-entrance:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
  color: var(--text-main);
}

.btn-entrance:active {
  transform: scale(0.97);
}

.text-teal-500,
.text-teal-600,
.text-teal-700,
.text-orange-500,
.text-orange-600,
.text-red-500,
.text-red-700,
.text-rose-500,
.text-rose-600,
.text-rose-700,
.text-emerald-500,
.text-emerald-600,
.text-emerald-700 { color: var(--flame); }
.text-amber-400,
.text-amber-500,
.text-amber-600 { color: var(--ember); }
.bg-teal-50,
.bg-cyan-50,
.bg-red-50,
.bg-red-100,
.bg-rose-50,
.bg-emerald-50,
.bg-emerald-100,
.bg-amber-50,
.bg-amber-100 { background: rgba(var(--flame-rgb), 0.1); color: var(--text); }

.toast {
  position: fixed;
  right: var(--s-24);
  bottom: var(--s-24);
  z-index: 80;
  padding: var(--s-12) var(--s-16);
  border: 1px solid var(--border-color);
  border-radius: var(--s-12);
  background: var(--bg-raised);
  color: var(--text);
  font-size: var(--fs-note);
  opacity: 0;
  pointer-events: none;
  transform: translateY(var(--s-8));
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* SEO 与无 JavaScript 环境降级浏览样式 */
.noscript-library {
  padding: var(--s-24);
  border: 1px solid var(--border-color);
  border-radius: var(--s-16);
  background: var(--bg-raised);
  display: flex;
  flex-direction: column;
  gap: var(--s-32);
}
.noscript-header h2 {
  font-size: var(--fs-title);
  color: var(--text-main);
  margin-bottom: var(--s-8);
}
.noscript-header p {
  color: var(--text-secondary);
  font-size: var(--fs-small);
}
.seo-section {
  border-top: 1px solid var(--border-color);
  padding-top: var(--s-24);
}
.seo-sec-header h3 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: var(--s-4);
}
.seo-sec-header p {
  font-size: var(--fs-small);
  color: var(--text-dim);
  margin-bottom: var(--s-16);
}
.seo-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--s-16);
}
.seo-card {
  padding: var(--s-16);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--s-12);
  display: flex;
  flex-direction: column;
  gap: var(--s-8);
}
.seo-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-8);
}
.seo-card-header h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}
.seo-card-header h4 a {
  color: var(--text-main);
  text-decoration: none;
}
.seo-card-header h4 a:hover {
  color: var(--primary);
}
.seo-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background: var(--primary-subtle);
  color: var(--primary);
  white-space: nowrap;
}
.seo-card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}
.seo-coverage-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}
.seo-coverage-list li strong {
  color: var(--text-main);
}
.seo-why {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem;
  border-radius: 0.375rem;
  margin: 0;
}
.seo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.7rem;
  color: var(--text-dim);
}
.seo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.5rem;
}
.seo-links a {
  font-size: 0.8rem;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.seo-links a:hover {
  text-decoration: underline;
}

.category-placeholder {
  display: flex;
  flex-direction: column;
  gap: var(--s-8);
  padding: var(--s-24);
  border: 1px dashed var(--border-color);
  border-radius: var(--s-12);
  background: var(--bg-subtle);
  color: var(--text-main);
}
.category-placeholder span { color: var(--text-dim); font-size: var(--fs-note); }

@media (max-width: 899px) {
  .library-topbar { grid-template-columns: 1fr; }
  .library-actions { justify-content: stretch; }
  .workspace-layout { display: block; }
  .category-rail {
    position: sticky;
    top: calc(-1 * var(--s-32));
    z-index: 30;
    margin-bottom: var(--s-16);
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--s-8);
    padding: var(--s-4);
  }
  .category-rail-heading { display: none; }
  .category-nav { flex-direction: row; width: max-content; }
  .nav-link { grid-template-columns: var(--s-8) auto; width: auto; white-space: nowrap; }
  .nav-index { display: none; }
}

@media (max-width: 768px) {
  .library-page { padding-top: var(--s-24); }
  .library-actions { flex-wrap: wrap; }
  .search-box { flex-basis: 100%; }
  .library-page .grid.grid-cols-1 { grid-template-columns: 1fr; gap: var(--s-12); }
  .library-page .card-hover-effect { padding: var(--s-12); }
  .library-page .card-hover-effect p { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}

/* ==========================================================================
   单页资源库模式：分类连续纵向展开，页面滚动由浏览器负责
   ========================================================================== */
.js body {
  height: auto;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
}

.single-library-page {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 0;
  overflow: visible;
}

.library-shell {
  width: 100%;
  margin: 0;
  padding: 0 var(--s-32);
}

.single-library-page .library-topbar {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
  gap: var(--s-16);
  align-items: end;
  padding: var(--s-32) 0 var(--s-24);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-header);
  backdrop-filter: blur(16px);
}

.library-identity h1 {
  margin-top: var(--s-8);
  color: var(--text);
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 600;
  line-height: 1.25;
}

.library-identity > p:last-child {
  max-width: 720px;
  margin-top: var(--s-8);
  color: var(--text-dim);
  font-size: var(--fs-note);
}

.single-library-page .library-actions {
  justify-content: flex-end;
}

.single-library-page .quick-tags {
  display: none;
}

.single-library-page .workspace-main {
  padding-top: var(--s-32);
}

.single-library-page .workspace-layout {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  align-items: start;
  gap: var(--s-32);
  min-height: calc(100vh - 180px);
}

.single-library-page .category-rail {
  display: block;
  position: sticky;
  top: var(--s-24);
  z-index: 10;
  max-height: calc(100vh - 144px);
  overflow-y: auto;
  background: var(--bg-card);
}

.single-library-page .category-rail-heading {
  display: block;
}

.single-library-page #main-content-area > section {
  display: block !important;
  width: 100%;
  margin-bottom: var(--s-64);
  scroll-margin-top: var(--s-24);
}

.single-library-page #main-content-area > section:last-child { margin-bottom: 0; }

.single-library-page .library-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--s-16);
  margin-top: var(--s-64);
  padding: var(--s-24) 0 var(--s-48);
  border-top: 1px solid var(--border-color);
  color: var(--text-dim);
  font-size: var(--fs-note);
}

@media (max-width: 1199px) {
  .library-shell { padding: 0 var(--s-16); }
  .single-library-page .library-topbar {
    grid-template-columns: 1fr;
    align-items: stretch;
    padding-top: var(--s-24);
  }
  .single-library-page .library-actions { justify-content: stretch; flex-wrap: wrap; }
  .single-library-page .search-box { flex-basis: 100%; }
  .single-library-page .workspace-layout { display: block; }
  .single-library-page .category-rail {
    position: sticky;
    top: 0;
    z-index: 30;
    max-height: none;
    margin-top: var(--s-16);
    margin-bottom: var(--s-16);
    overflow-x: auto;
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--s-8);
    padding: var(--s-4);
  }
  .single-library-page .category-nav { flex-direction: row; width: max-content; }
  .single-library-page .nav-link { width: auto; white-space: nowrap; }
  .single-library-page .card-hover-effect { min-width: 0; overflow: hidden; }
  .single-library-page pre {
    max-width: 100%;
    overflow-x: auto;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }
  .single-library-page .workspace-main { padding-top: var(--s-24); }
  .single-library-page #main-content-area > section { scroll-margin-top: 132px; }
  .single-library-page .library-footer { flex-direction: column; gap: var(--s-8); }
}

/* 资讯与全站紧凑卡片排版 (taste-skill 规范微动效与质感) */
.news-compact-card {
  padding: 1.25rem !important;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--s-12);
}

.news-compact-thumb {
  position: relative;
  width: 136px;
  height: 82px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-subtle);
  flex-shrink: 0;
  display: block;
}

.news-compact-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.25s var(--ease-spring);
  display: block;
}

.card-hover-effect:hover .news-compact-thumb img {
  transform: scale(1.04);
}

.news-thumb-tag {
  position: absolute;
  bottom: 4px;
  right: 4px;
  font-size: 9px;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.72);
  color: #f1f5f9;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  pointer-events: none;
}

/* 卡片一体化核心信息容器 (taste-skill 规范：将核心能力与为什么收藏融为单容器，彻底解决双层边框挤压与生硬缝隙) */
.card-info-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 0.85rem;
  transition: border-color 0.15s ease;
}

.card-coverage-section {
  display: block;
}

.card-why-section {
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

html.light .card-info-box .text-zinc-400 {
  color: #64748b;
}

html.light .card-why-section .text-zinc-300 {
  color: #334155;
}

.news-coverage-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  transition: border-color 0.15s ease;
}

.news-coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.35rem 0.85rem;
}

.news-why-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  font-size: 0.75rem;
  line-height: 1.55;
  transition: border-color 0.15s ease;
}

/* 卡片底部操作栏（左侧标签与右侧按钮严格水平中轴对齐，预留充裕呼吸留白） */
.card-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.85rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
}

.card-tags-group {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  overflow: hidden;
  flex-wrap: nowrap;
}

.card-tag-pill {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 8px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  line-height: 1;
  white-space: nowrap;
}

.card-actions-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.card-actions-group .btn-entrance {
  min-height: 32px;
  height: 32px;
  padding: 0 12px;
  font-size: 12px;
  border-radius: 6px;
  margin: 0;
}

/* 资讯卡片响应式网格：桌面并列 2 栏，移动端自适应单栏 */
.news-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .news-cards-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }
}

@media (max-width: 640px) {
  .news-compact-thumb {
    width: 110px;
    height: 68px;
  }
  .news-coverage-grid {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* ==========================================================================
   联系我 / 微信公众号 弹窗与页脚组件
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: var(--s-16);
  opacity: 1;
  transition: opacity 0.2s ease;
}

.modal-backdrop.hidden {
  display: none !important;
}

.modal-card {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--s-16);
  padding: var(--s-24);
  box-shadow: var(--shadow-xl);
  text-align: center;
  cursor: pointer;
  animation: modalPopIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPopIn {
  from {
    transform: scale(0.92);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.modal-close-btn:hover {
  background: var(--primary-subtle);
  color: var(--primary);
  border-color: var(--primary-border);
}

.modal-header-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto var(--s-12);
  border-radius: 12px;
  background: var(--primary-subtle);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--s-8);
}

.modal-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: var(--s-20);
}

.modal-qrcode-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
}

.modal-qrcode-img {
  width: 220px;
  height: 220px;
  border-radius: 6px;
  display: block;
}

.modal-qrcode-tip {
  font-size: 12px;
  font-weight: 600;
  color: #0f172a;
}

/* 页脚布局与右下角联系我卡片 */
.single-library-page .library-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-24);
  margin-top: var(--s-64);
  padding: var(--s-32) 0 var(--s-48);
  border-top: 1px solid var(--border-color);
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-title {
  font-weight: 700;
  color: var(--text-main);
  font-size: 15px;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 12px;
}

.footer-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.footer-contact-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.footer-contact-card:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.footer-qrcode {
  width: 56px;
  height: 56px;
  max-width: 56px;
  max-height: 56px;
  border-radius: 8px;
  background: #ffffff;
  padding: 2px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: block;
  object-fit: cover;
  flex-shrink: 0;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.footer-contact-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
}

.footer-contact-action {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.3;
}

@media (max-width: 768px) {
  .single-library-page .library-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--s-16);
  }
  .footer-right,
  .footer-contact-card {
    width: 100%;
    justify-content: flex-start;
  }
}