:root {
  --bg: #ffffff;
  --text: #333333;
  --text-secondary: #666666;
  --border: #e0e0e0;
  --card-bg: #f9f9f9;
  --card-hover: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --text: #e0e0e0;
  --text-secondary: #a0a0a0;
  --border: #333333;
  --card-bg: #242424;
  --card-hover: #2a2a2a;
  --shadow: rgba(0, 0, 0, 0.3);
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

header h1 {
  font-size: 24px;
  margin-bottom: 5px;
}

header h1 a {
  color: var(--text);
  text-decoration: none;
}

.site-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  opacity: 0.8;
}

nav {
  display: flex;
  gap: 20px;
  align-items: center;
}

nav a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s;
}

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

#theme-toggle {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: 5px;
}

.search-box {
  margin-top: 15px;
}

#search-input {
  width: 100%;
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  transition: border-color 0.3s;
}

#search-input:focus {
  outline: none;
  border-color: var(--primary);
}

main {
  min-height: calc(100vh - 200px);
  padding: 40px 0;
}

.category-section {
  margin-bottom: 50px;
}

.category-section h2 {
  font-size: 28px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-section h2 a {
  color: var(--text);
  text-decoration: none;
}

.icon {
  font-size: 32px;
}

.category-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.item-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  transition: all 0.2s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-direction: column;
  flex-wrap: nowrap;
}

.item-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px var(--shadow);
}

.item-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.item-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
}

.item-icon span {
  font-size: 48px;
}

.item-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-content h3 {
  font-size: 18px;
  margin: 0;
  color: var(--text);
}

.item-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.item-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.item-tag {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
}

.page-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--card-bg);
  padding: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.page-content h1 {
  margin-bottom: 30px;
  font-size: 32px;
}

.page-content h2 {
  margin-top: 30px;
  margin-bottom: 15px;
  font-size: 24px;
}

.page-content p,
.page-content ul {
  margin-bottom: 15px;
}

.page-content ul {
  padding-left: 25px;
}

.page-content a {
  color: var(--primary);
  text-decoration: none;
}

.page-content a:hover {
  text-decoration: underline;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.link-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.3s;
}

.link-card:hover {
  box-shadow: 0 4px 12px var(--shadow);
  transform: translateY(-2px);
  text-decoration: none;
}

.link-card h3 {
  color: var(--text);
  font-size: 18px;
  margin-bottom: 8px;
}

.link-card p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}

footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 30px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

.hidden {
  display: none !important;
}

.item-detail {
  max-width: 900px;
  margin: 0 auto;
}

.item-header {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  margin-bottom: 30px;
  display: flex;
  gap: 30px;
  align-items: flex-start;
}

.item-icon-large {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.item-icon-large img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
}

.item-icon-large span {
  font-size: 64px;
}

.item-title-section {
  flex: 1;
}

.item-title-section h1 {
  font-size: 36px;
  margin-bottom: 15px;
}

.item-desc {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 20px;
}

.item-meta {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}

.visit-btn {
  background: var(--primary);
  color: white;
  padding: 8px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.3s;
}

.visit-btn:hover {
  background: var(--primary-hover);
}

.item-content {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 0px 20px;
}

.item-content h2 {
  font-size: 24px;
  margin-top: 30px;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

.item-content h2:first-child {
  margin-top: 0;
}

.item-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.item-content table th,
.item-content table td {
  padding: 12px;
  text-align: left;
  border: 1px solid var(--border);
}

.item-content table th {
  background: var(--bg);
  font-weight: 600;
}

.item-content ul {
  list-style: none;
  padding: 0;
}

.item-content ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.item-content ul li:last-child {
  border-bottom: none;
}

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 15px;
  }

  nav {
    gap: 15px;
    font-size: 14px;
  }

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

  .page-content {
    padding: 25px;
  }

  .category-section h2 {
    font-size: 24px;
  }

  .item-header {
    flex-direction: column;
    padding: 25px;
    gap: 20px;
  }

  .item-title-section h1 {
    font-size: 28px;
  }

  .item-content {
    padding: 25px;
  }

  .item-content table {
    font-size: 14px;
  }
}


div#item-ss {
  display: flex;
  flex-direction: row;
  align-items: center;
}