/* ===== CSS Variables ===== */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --accent: #ec4899;
  --accent-dark: #db2777;
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --text: #1e293b;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1200px;
  --gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
  --gradient-text: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
}

[data-theme="dark"] {
  --primary: #818cf8;
  --primary-dark: #6366f1;
  --primary-light: #a5b4fc;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --text: #f1f5f9;
  --text-light: #cbd5e1;
  --text-muted: #64748b;
  --border: #334155;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -4px rgba(0,0,0,0.3);
}

/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

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

img {
  max-width: 100%;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.85);
  transition: all 0.3s;
}

[data-theme="dark"] .header {
  background: rgba(15,23,42,0.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 800;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  color: var(--text-light);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--primary);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  color: var(--text);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--bg-hover);
}

/* ===== Language Switch (中/EN) ===== */
.lang-switch {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  color: var(--text);
  flex-shrink: 0;
  padding: 0;
  line-height: 1;
}
.lang-switch:hover {
  background: var(--bg-hover);
}

/* ===== Mobile Menu Toggle (hamburger) ===== */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(99,102,241,0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(236,72,153,0.1) 0%, transparent 50%);
  z-index: -1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 .gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 36px;
}

/* ===== Search ===== */
.search-wrap {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  font-size: 16px;
  border: 2px solid var(--border);
  border-radius: 100px;
  background: var(--bg-card);
  color: var(--text);
  outline: none;
  transition: all 0.3s;
  box-shadow: var(--shadow);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99,102,241,0.1);
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Search clear button */
.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: var(--bg-hover);
  color: var(--text-light);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.search-clear:hover {
  background: var(--primary);
  color: white;
}

/* Result count highlight flash */
#result-count.highlight {
  color: var(--primary);
  font-weight: 700;
  transition: color 0.6s, font-weight 0.6s;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-num {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== Categories ===== */
.section {
  padding: 60px 0;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-desc {
  color: var(--text-light);
  font-size: 15px;
  margin-bottom: 32px;
}

.categories {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.cat-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}

.cat-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.cat-btn.active {
  background: var(--gradient);
  border-color: transparent;
  color: white;
}

.cat-btn .cat-count {
  background: rgba(0,0,0,0.08);
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 12px;
}

.cat-btn.active .cat-count {
  background: rgba(255,255,255,0.25);
}

/* ===== Tool Cards ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.tool-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

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

.tool-card.featured {
  border-color: var(--primary-light);
}

.tool-card.featured::before {
  opacity: 1;
}

.tool-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.tool-icon {
  font-size: 36px;
  line-height: 1;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}

.tool-badge.free {
  background: rgba(16,185,129,0.1);
  color: #10b981;
}

.tool-badge.paid {
  background: rgba(245,158,11,0.1);
  color: #f59e0b;
}

.tool-badge.featured {
  background: rgba(99,102,241,0.1);
  color: var(--primary);
}

.tool-badge.promo {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
}

.promo-card {
  border: 1px solid rgba(245,158,11,0.35);
  box-shadow: 0 4px 20px rgba(245,158,11,0.08);
}

/* ===== Tool Page Partner Promo（合作推荐展位）===== */
.tool-promo {
  margin: 40px auto 8px;
}
.tool-promo-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.tool-promo-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
}
.tool-promo-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}
.tool-promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.tool-promo-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid rgba(245,158,11,0.35);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(245,158,11,0.08);
  text-decoration: none;
  color: var(--text);
  transition: all 0.25s;
}
.tool-promo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.tool-promo-icon {
  font-size: 30px;
  line-height: 1;
}
.tool-promo-name {
  font-size: 16px;
  font-weight: 700;
}
.tool-promo-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tool-promo-cta {
  margin-top: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

.tool-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.tool-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tool-tag {
  padding: 3px 10px;
  background: var(--bg-hover);
  border-radius: 100px;
  font-size: 12px;
  color: var(--text-muted);
}

.tool-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.tool-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
}

.tool-rating .stars {
  color: #fbbf24;
}

.tool-visit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--gradient);
  color: white;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.tool-visit:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(99,102,241,0.4);
}

/* ===== No Results ===== */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.no-results .emoji {
  font-size: 48px;
  margin-bottom: 16px;
}

/* ===== Ad Section ===== */
.ad-section {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  margin: 40px 0;
}

.ad-section .ad-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.ad-section .ad-content {
  color: var(--text-light);
  font-size: 14px;
}

.ad-section .ad-content strong {
  color: var(--primary);
}

/* ===== Featured Banner ===== */
.featured-banner {
  background: var(--gradient);
  border-radius: var(--radius);
  padding: 40px;
  color: white;
  margin: 40px 0;
  position: relative;
  overflow: hidden;
}

.featured-banner::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
}

.featured-banner h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
}

.featured-banner p {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: 20px;
  position: relative;
}

.featured-banner .banner-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: white;
  color: var(--primary);
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.3s;
  position: relative;
}

.featured-banner .banner-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 40px 0 24px;
  margin-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-light);
  max-width: 300px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 8px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-beian {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-beian a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}

.footer-beian a:hover {
  color: var(--primary);
}

.footer-beian .beian-icon {
  width: 14px;
  height: 14px;
  vertical-align: middle;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  z-index: 50;
  font-size: 20px;
  color: var(--text);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    z-index: 99;
  }

  .nav.open {
    max-height: 320px;
    padding: 8px 20px 16px;
  }

  .nav a {
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .header {
    position: sticky;
  }

  .header-inner {
    gap: 12px;
  }

  .hero {
    padding: 48px 0 40px;
  }

  .hero-stats {
    gap: 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .featured-banner {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    gap: 16px;
  }

  .stat-num {
    font-size: 22px;
  }

  .categories {
    gap: 8px;
  }

  .cat-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tool-card {
  animation: fadeInUp 0.4s ease-out;
}

/* ===== Loading Skeleton ===== */
.skeleton {
  background: linear-gradient(90deg, var(--bg-hover) 25%, var(--bg-card) 50%, var(--bg-hover) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== Load More Button (tools.html) ===== */
.load-more-btn {
  display: inline-block;
  padding: 12px 36px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: all .2s ease;
}
.load-more-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== 实用工具 下拉菜单（数据驱动：internal-tools.js + nav.js） ===== */
.tools-dropdown { position: relative; display: inline-flex; }
.tools-menu-trigger {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--text-light); font-size: 15px; font-weight: 500;
  background: none; border: none; cursor: pointer; font-family: inherit;
  padding: 0; line-height: 1; transition: color 0.2s;
}
.tools-menu-trigger:hover,
.tools-dropdown.open > .tools-menu-trigger,
.tools-menu-trigger.active { color: var(--primary); }
.caret { font-size: 10px; transition: transform .2s; }
.tools-dropdown.open .caret { transform: rotate(180deg); }

.tools-menu {
  position: absolute; top: calc(100% + 12px); left: 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 12px 14px; z-index: 200; display: none;
  flex-direction: row; align-items: flex-start; gap: 0;
  max-width: min(780px, calc(100vw - 32px));
}
.tools-dropdown.open .tools-menu { display: flex; }
.tm-col { display: flex; flex-direction: column; gap: 2px; min-width: 210px; padding: 0 12px; }
.tm-col:first-child { padding-left: 0; }
.tm-col + .tm-col { border-left: 1px solid var(--border); }
.tm-col-head { font-size: 12px; font-weight: 700; color: var(--text-muted); padding: 4px 12px 8px; letter-spacing: .04em; }
.tm-col a {
  display: flex; gap: 12px; align-items: flex-start; padding: 9px 12px;
  border-radius: var(--radius-sm); color: var(--text); text-decoration: none; transition: background .15s;
}
.tm-col a:hover, .tm-col a.active { background: var(--bg-hover); }
.tools-menu .tm-icon { font-size: 22px; line-height: 1.2; }
.tools-menu .tm-body { display: flex; flex-direction: column; }
.tools-menu .tm-name { font-size: 14px; font-weight: 600; color: var(--text); }
.tools-menu .tm-desc { font-size: 12px; color: var(--text-muted); margin-top: 3px; line-height: 1.5; }

@media (max-width: 768px) {
  .nav.open { max-height: 85vh; overflow-y: auto; }
  .tools-dropdown { display: block; width: 100%; }
  .tools-menu-trigger {
    width: 100%; justify-content: space-between;
    padding: 14px 0; font-size: 16px; color: var(--text-light);
    border-bottom: 1px solid var(--border);
  }
  .tools-menu {
    position: static; flex-direction: column; min-width: 0; max-width: none;
    box-shadow: none; border: none; padding: 0 0 4px 8px; background: transparent; gap: 0;
  }
  .tm-col { padding: 0; min-width: 0; border-left: none !important; }
  .tm-col + .tm-col { border-left: none; }
  .tm-col-head { padding: 10px 0 4px; }
  .tm-col a { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .tm-col a:last-child { border-bottom: none; }
}

/* 全站反馈悬浮按钮（兔小巢） */
.feedback-fab { position: fixed; right: 20px; bottom: 20px; z-index: 9999; display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; background: var(--primary); color: #fff; border: none; border-radius: 999px; font-size: 15px; font-weight: 600; line-height: 1; cursor: pointer; text-decoration: none; box-shadow: 0 6px 20px rgba(99,102,241,.35); transition: transform .15s ease, box-shadow .15s ease; }
.feedback-fab:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(99,102,241,.45); }
.feedback-fab .fab-icon { display: inline-flex; }
.feedback-fab .fab-icon svg { display: block; }
[data-theme="dark"] .feedback-fab { background: var(--primary-dark); }
@media (max-width: 600px) { .feedback-fab { right: 14px; bottom: 14px; padding: 10px 14px; font-size: 14px; } }