:root {
  --text: #1a1a1a;
  --muted: #6a6a6a;
  --link: #2b65c0;
  --rule: #e6e6e6;
  --bg: #ffffff;
  --maxw: 660px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 24px 120px;
}

/* Header / nav */
header {
  margin-bottom: 48px;
}

header .name {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
}

header .name a {
  color: var(--text);
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 16px;
}

nav a {
  color: var(--link);
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

nav a.active {
  color: var(--text);
  font-weight: 500;
}

/* Content */
main {
  font-size: 17px;
}

h1 {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}

h2 {
  font-size: 19px;
  font-weight: 600;
  margin: 40px 0 12px;
}

p {
  margin: 0 0 18px;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.muted {
  color: var(--muted);
}

ul.links {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul.links li {
  margin-bottom: 10px;
}

hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 40px 0;
}

footer {
  margin-top: 72px;
  font-size: 14px;
  color: var(--muted);
}

.placeholder {
  color: var(--muted);
  font-style: italic;
}

/* Bookshelf */
.books {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px 28px;
  margin: 8px 0 0;
}

.book {
  text-align: left;
}

.book .cover {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  background: #f2f2f2;
  border-radius: 3px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18), 0 6px 16px rgba(0, 0, 0, 0.08);
}

.book .title {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
}

.book .author {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-top: 2px;
}

@media (max-width: 480px) {
  .books { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
}

@media (max-width: 480px) {
  .wrap { padding: 40px 20px 80px; }
  body { font-size: 16px; }
}