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

:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-hover: #1c2333;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #3fb950;
  --accent-glow: rgba(63, 185, 80, 0.15);
  --link: #58a6ff;
  --link-hover: #79c0ff;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--link-hover);
}

/* Layout */
.header {
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.logo-link {
  text-decoration: none !important;
}

.logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  user-select: none;
}

.logo-prompt {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-text {
  color: var(--text);
  letter-spacing: -0.01em;
}

.logo-cursor {
  display: inline-block;
  width: 8px;
  height: 1.2rem;
  background: var(--accent);
  animation: blink 1s step-end infinite;
  border-radius: 1px;
}

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

.nav {
  display: flex;
  gap: 20px;
}

.nav a {
  color: var(--text-dim);
  font-size: 0.88rem;
  transition: color 0.2s ease;
  padding: 4px 12px;
  border: 1px dotted var(--border);
  border-radius: 6px;
}

.nav a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* Main */
.main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 64px;
  min-height: calc(100vh - 140px);
}

/* Home page */
.page-home {
  text-align: center;
}

.page-home h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
}

.social-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}

.social-icon {
  color: var(--text-dim) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  background: transparent;
}

.social-icon:hover {
  color: var(--accent) !important;
  border-color: var(--accent);
  background: var(--accent-glow);
  text-decoration: none !important;
}

.social-icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

/* Works page */
.page-works h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 32px;
}

.page-works h3 {
  font-size: 1.1rem;
  color: var(--accent);
  margin: 28px 0 12px;
  font-weight: 600;
}

.page-works p {
  margin-bottom: 10px;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.page-works p a {
  color: var(--text);
  font-weight: 500;
}

.page-works p a:hover {
  color: var(--link-hover);
}

/* Blog index */
.page-index h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 32px;
}

.page-index h2 {
  font-size: 1.1rem;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.page-index .post-list {
  list-style: none;
  margin-bottom: 32px;
}

.page-index .post-list li {
  border-bottom: 1px dashed var(--border);
  padding: 10px 0;
}

.page-index .post-list li:last-child {
  border-bottom: none;
}

.page-index .post-list li a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 4px 12px;
  border-radius: 6px;
  color: var(--text);
  font-size: 0.95rem;
  transition: background 0.15s ease;
}

.page-index .post-list li a:hover {
  background: var(--bg-hover);
  text-decoration: none;
}

.page-index .post-list .post-date {
  color: var(--text-dim);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Blog post */
.page-post h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.page-post .post-meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.post-body {
  font-size: 1rem;
  line-height: 1.8;
}

.post-body p {
  margin-bottom: 20px;
}

.post-body h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 36px 0 16px;
  line-height: 1.35;
}

.post-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 28px 0 12px;
  line-height: 1.4;
}

.post-body h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 24px 0 10px;
}

.post-body ul, .post-body ol {
  margin: 8px 0 20px 24px;
}

.post-body li {
  margin-bottom: 6px;
}

.post-body strong {
  color: #f0f6fc;
  font-weight: 600;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 36px 0;
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-card);
  padding: 2px 7px;
  border-radius: 4px;
  color: var(--accent);
  border: 1px solid var(--border);
}

.post-body pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 20px 0;
  font-size: 0.85rem;
  line-height: 1.6;
}

.post-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: inherit;
}

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 20px;
  margin: 20px 0;
  color: var(--text-dim);
  font-style: italic;
}

.post-body a {
  color: var(--link);
}

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

.post-body img {
  max-width: 100%;
  border-radius: 8px;
  margin: 20px 0;
  border: 1px solid var(--border);
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
}

.post-body th, .post-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.post-body th {
  background: var(--bg-card);
  font-weight: 600;
  color: var(--text);
}

/* Tags */
.post-tags {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--accent-glow);
  border: 1px solid rgba(63, 185, 80, 0.2);
  border-radius: 20px;
  color: var(--accent);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 28px 24px;
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* Mobile */
@media (max-width: 600px) {
  .header-inner {
    padding: 16px;
    gap: 12px;
  }

  .nav {
    gap: 12px;
  }

  .nav a {
    font-size: 0.82rem;
  }

  .main {
    padding: 32px 16px 48px;
  }

  .page-home h1,
  .page-works h1,
  .page-index h1,
  .page-post h1 {
    font-size: 1.5rem;
  }

  .page-index .post-list li a {
    flex-direction: column;
    gap: 2px;
    padding: 4px 8px;
  }

  .page-index .post-list .post-date {
    font-size: 0.75rem;
  }
}