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

/* System font stack */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

/* Table layout */
.container {
  display: table;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 20px;
}

.sidebar {
  display: table-cell;
  width: 200px;
  vertical-align: top;
  padding-right: 40px;
}

.content {
  display: table-cell;
  vertical-align: top;
}

/* Sidebar */
.site-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 24px;
}

.site-title a {
  color: #111;
  text-decoration: none;
}

nav ul {
  list-style: none;
}

nav li {
  margin-bottom: 8px;
}

nav a {
  color: #555;
  text-decoration: none;
  font-size: 15px;
}

nav a:hover {
  color: #111;
}

/* Content */
.content h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #111;
}

.content h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  margin-top: 28px;
  color: #222;
}

.content h4 {
  font-size: 14px;
  font-weight: 600;
  margin-top: 20px;
  margin-bottom: 8px;
  color: #777;
}

.content p {
  margin-bottom: 16px;
  color: #444;
}

.content a {
  color: #111;
  text-decoration: underline;
  text-decoration-color: #ccc;
  text-underline-offset: 2px;
}

.content a:hover {
  text-decoration-color: #111;
}

/* Writing list */
.writing-list {
  list-style: none;
}

.writing-list li {
  margin-bottom: 20px;
}

.writing-list .date {
  display: block;
  font-size: 13px;
  color: #999;
  margin-top: 2px;
}

/* Links list */
.links-list {
  list-style: none;
}

.links-list li {
  margin-bottom: 14px;
}

.links-list .link-desc {
  display: block;
  font-size: 14px;
  color: #777;
  margin-top: 2px;
}

/* Review list */
.review-list {
  list-style: none;
}

.review-list li {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.book-cover {
  width: 80px;
  height: auto;
  border-radius: 2px;
  flex-shrink: 0;
}

.review-list .review-author {
  display: block;
  font-size: 13px;
  color: #999;
  margin-top: 2px;
}

.review-list .review-text {
  display: block;
  font-size: 14px;
  color: #555;
  margin-top: 4px;
}

/* Press list */
.press-list {
  list-style: none;
}

.press-list li {
  margin-bottom: 14px;
}

.press-list .press-source {
  font-size: 13px;
  color: #999;
}

/* Article / writing post */
.post-header {
  margin-bottom: 32px;
}

.post-header h2 {
  margin-bottom: 4px;
}

.post-header .date {
  font-size: 14px;
  color: #999;
}

.post-content p {
  margin-bottom: 20px;
  line-height: 1.7;
}

/* Responsive: stack sidebar on small screens */
@media (max-width: 600px) {
  .container {
    display: block;
    padding: 30px 20px;
  }

  .sidebar {
    display: block;
    width: 100%;
    padding-right: 0;
    margin-bottom: 30px;
  }

  .content {
    display: block;
  }

  nav ul {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }

  nav li {
    margin-bottom: 0;
  }
}