:root {
  --color-primary: #f59e0b;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --max-width: 720px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  padding: 1.5rem 0;
  border-bottom: 1px solid #e5e7eb;
  margin-bottom: 3rem;
}

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

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.site-header nav a {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 0.95rem;
}

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

/* Post */
.post-header {
  margin-bottom: 2.5rem;
}

.post-header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.post-meta {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.post-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.post-content p {
  margin-bottom: 1.5rem;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content strong {
  font-weight: 600;
}

.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #e5e7eb;
}

.post-footer a {
  color: var(--color-primary);
  font-weight: 600;
}

/* Homepage */
.post-list {
  list-style: none;
}

.post-list li {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid #e5e7eb;
}

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

.post-list h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.post-list h2 a {
  color: var(--color-text);
  text-decoration: none;
}

.post-list h2 a:hover {
  color: var(--color-primary);
}

.post-list .excerpt {
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.read-more {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

/* Footer */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 0;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  font-size: 0.9rem;
  text-align: center;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .post-header h1 {
    font-size: 1.75rem;
  }
}