/* 共享博客文章样式 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-deep: #06060e;
  --bg-card: rgba(12, 12, 30, 0.85);
  --cyan: #00f0ff;
  --cyan-dim: rgba(0, 240, 255, 0.15);
  --magenta: #ff00e5;
  --magenta-dim: rgba(255, 0, 229, 0.12);
  --purple: #8b5cf6;
  --gold: #fbbf24;
  --green: #34d399;
  --text-primary: #e8e8f0;
  --text-secondary: #b0b0c8;
  --text-muted: #7a7a92;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 240, 255, 0.3);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.85;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 70%);
}

/* 顶部导航 */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 6, 14, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-back {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s;
  padding: 6px 14px;
  border-radius: 8px;
}

.nav-back:hover {
  color: var(--cyan);
  background: var(--cyan-dim);
  transform: translateX(-3px);
}

.nav-logo {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 900;
  font-size: 0.95rem;
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

/* 文章容器 */
.article-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 60px 32px 100px;
  position: relative;
  z-index: 1;
}

.article-header {
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-tag {
  padding: 4px 14px;
  border-radius: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.tag-llm { background: rgba(139, 92, 246, 0.2); color: #a78bfa; border: 1px solid rgba(139, 92, 246, 0.3); }
.tag-cv { background: rgba(0, 240, 255, 0.15); color: var(--cyan); border: 1px solid rgba(0, 240, 255, 0.3); }
.tag-agent { background: rgba(255, 0, 229, 0.15); color: var(--magenta); border: 1px solid rgba(255, 0, 229, 0.3); }
.tag-ml { background: rgba(251, 191, 36, 0.15); color: var(--gold); border: 1px solid rgba(251, 191, 36, 0.3); }
.tag-infra { background: rgba(52, 211, 153, 0.15); color: var(--green); border: 1px solid rgba(52, 211, 153, 0.3); }

.article-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.3;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.article-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
}

.article-info {
  display: flex;
  gap: 24px;
  margin-top: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-info span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 文章正文 */
.article-content {
  font-size: 1rem;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 48px 0 20px;
  padding-left: 16px;
  border-left: 3px solid var(--cyan);
  color: #fff;
  letter-spacing: -0.3px;
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--cyan);
}

.article-content p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.article-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-content code {
  font-family: 'JetBrains Mono', monospace;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.15);
  color: var(--cyan);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.92em;
}

.article-content pre {
  background: rgba(8, 8, 22, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 24px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  line-height: 1.6;
}

.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-primary);
}

.article-content ul, .article-content ol {
  margin: 16px 0 24px 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 10px;
}

.article-content blockquote {
  border-left: 3px solid var(--magenta);
  background: var(--magenta-dim);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-primary);
  font-style: italic;
}

.article-content a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(0, 240, 255, 0.4);
  transition: all 0.2s;
}

.article-content a:hover {
  border-bottom-style: solid;
  border-bottom-color: var(--cyan);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
}

.article-content th, .article-content td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content th {
  background: rgba(0, 240, 255, 0.08);
  color: var(--cyan);
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
}

/* 文章底部 */
.article-footer {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.article-footer .heart {
  color: var(--magenta);
}

.article-footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  color: var(--cyan);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.3s;
  margin-top: 16px;
}

.back-home:hover {
  background: var(--cyan-dim);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(0, 240, 255, 0.2);
}

@media (max-width: 768px) {
  .nav-bar { padding: 14px 20px; }
  .article-container { padding: 40px 20px 80px; }
  .article-content pre { padding: 14px 16px; font-size: 0.82rem; }
}