:root {
  --bg: #fafafa;
  --bg-card: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #555;
  --text-muted: #888;
  --accent: #f7931a;
  --accent-dark: #e67e00;
  --accent-light: rgba(247, 147, 26, 0.1);
  --border: #e5e5e5;
  --code-bg: #f5f5f5;
  --link: #f7931a;
  --link-hover: #e67e00;
  --max-width: 720px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  --font-serif: "Georgia", "Noto Serif SC", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0d;
    --bg-card: #1a1a1a;
    --text: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #777;
    --border: #333;
    --code-bg: #222;
    --accent-light: rgba(247, 147, 26, 0.15);
  }
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo__icon {
  font-size: 28px;
  line-height: 1;
  color: var(--accent);
  font-weight: 900;
}

.logo__text {
  font-size: 18px;
}

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

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
  white-space: nowrap;
}

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

/* Hero */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero h1 {
  font-size: 36px;
  color: var(--accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.hero h1 .logo__icon {
  font-size: 42px;
}

.hero__subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.hero__desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.hero__search {
  display: flex;
  max-width: 400px;
  margin: 0 auto;
  gap: 8px;
}

.hero__search input {
  flex: 1;
  padding: 10px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: var(--bg-card);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.hero__search input:focus {
  border-color: var(--accent);
}

.hero__search button {
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.2s;
}

.hero__search button:hover {
  background: var(--accent-dark);
}

/* Post List */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 32px 0;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s;
}

.post-card:hover {
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.post-card__title {
  font-size: 20px;
  margin-bottom: 8px;
}

.post-card__title a {
  color: var(--text);
  text-decoration: none;
}

.post-card__title a:hover {
  color: var(--accent);
}

.post-card__meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.tag {
  background: var(--accent-light);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
}

.tag--small {
  font-size: 11px;
  opacity: 0.7;
}

.post-card__summary {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 12px;
}

.post-card__readmore {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}

.post-card__readmore:hover {
  color: var(--link-hover);
}

/* Single Post */
.post {
  padding: 40px 0;
}

.post__header {
  margin-bottom: 32px;
  text-align: center;
}

.post__title {
  font-size: 28px;
  line-height: 1.4;
  margin-bottom: 12px;
}

.post__meta {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.post__content {
  font-size: 17px;
  line-height: 1.85;
}

.post__content h2 {
  font-size: 22px;
  margin: 32px 0 16px;
}

.post__content h3 {
  font-size: 19px;
  margin: 24px 0 12px;
}

.post__content p {
  margin-bottom: 20px;
}

.post__content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 16px auto;
  display: block;
}

.post__content blockquote {
  border-left: 3px solid var(--accent);
  padding: 8px 16px;
  margin: 16px 0;
  color: var(--text-secondary);
  background: var(--accent-light);
  border-radius: 0 6px 6px 0;
}

.post__content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.post__content a:hover {
  border-bottom-color: var(--accent);
}

.post__content code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 14px;
}

.post__content ul, .post__content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.post__footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.post__share p {
  text-align: center;
  color: var(--accent);
  font-style: italic;
}

.post__nav {
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  gap: 16px;
}

.post__nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}

.post__nav a:hover {
  color: var(--accent);
}

.post__nav-prev, .post__nav-next {
  max-width: 45%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post__nav-next {
  margin-left: auto;
  text-align: right;
}

/* Pagination - 数字分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 32px 0;
  flex-wrap: wrap;
}

.pagination__page,
.pagination__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  background: var(--bg-card);
  transition: all 0.2s;
  cursor: pointer;
}

.pagination__page:hover,
.pagination__arrow:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pagination__page--active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.pagination__page--active:hover {
  color: #fff;
}

.pagination__arrow--disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.pagination__dots {
  color: var(--text-muted);
  padding: 0 4px;
}

/* Search Page */
.search-page {
  padding: 40px 0;
}

.search-title {
  font-size: 24px;
  margin-bottom: 24px;
  color: var(--text);
}

.search-box input#search-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 16px;
  background: var(--bg-card);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
  margin-bottom: 20px;
}

.search-box input#search-input:focus {
  border-color: var(--accent);
}

.search-results {
  margin-top: 16px;
}

.search-loading,
.search-error,
.search-hint,
.search-empty,
.search-count,
.search-more {
  color: var(--text-muted);
  font-size: 14px;
  padding: 8px 0;
}

.search-empty {
  color: var(--text-secondary);
  font-size: 16px;
  padding: 24px 0;
}

.search-results-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-result-item {
  display: block;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  transition: box-shadow 0.2s;
}

.search-result-item:hover {
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.search-result-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.search-result-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.search-result-summary {
  font-size: 14px;
  color: var(--text-secondary);
}

mark {
  background: var(--accent-light);
  color: var(--accent);
  padding: 1px 3px;
  border-radius: 2px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 60px;
  text-align: center;
}

.site-footer p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 4px;
}

.disclaimer {
  font-size: 12px !important;
  max-width: 500px;
  margin: 8px auto 0 !important;
  line-height: 1.6;
}

.view-all {
  display: block;
  text-align: center;
  color: var(--accent);
  text-decoration: none;
  padding: 16px;
}

/* Responsive */
@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .hero h1 .logo__icon { font-size: 32px; }
  .post__title { font-size: 22px; }
  .post__content { font-size: 16px; }
  .nav { gap: 12px; }
  .nav a { font-size: 13px; }
  .logo__text { font-size: 16px; }
  .pagination__page,
  .pagination__arrow {
    min-width: 32px;
    height: 32px;
    font-size: 13px;
  }
}