:root {
  --paper: #f4f1ea;
  --paper-green: #eef2ec;
  --paper-dark: #e8e4db;
  --ink: #1a1a1a;
  --ink-soft: #3a3a3a;
  --green: #1d3b2a;
  --green-deep: #0f2418;
  --blue: #1a3a5c;
  --electric: #0044cc;
  --lime: #9bb83d;
  --red: #a83232;
  --gray: #888;
  --line: #c8c4bc;
}

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

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Index ─── */
.index-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 40px 120px;
}
.index-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 32px;
  margin-bottom: 48px;
}
.index-title {
  font-size: 14px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray);
  font-family: 'Helvetica Neue', sans-serif;
  margin-bottom: 12px;
}
.index-title b {
  color: var(--ink);
}
.index-meta {
  font-size: 12px;
  color: var(--gray);
  font-family: 'Helvetica Neue', sans-serif;
  letter-spacing: 0.05em;
}
.index-nav {
  display: flex;
  gap: 32px;
  margin-top: 20px;
}
.index-nav a {
  font-size: 13px;
  font-family: 'Helvetica Neue', sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}
.index-nav a:hover { color: var(--electric); border-color: var(--electric); }

.blog-list {
  list-style: none;
}
.blog-item {
  border-top: 1px solid var(--line);
  padding: 32px 0;
  display: grid;
  grid-template-columns: 48px 1fr 120px;
  gap: 24px;
  align-items: baseline;
}
.blog-item:last-child { border-bottom: 1px solid var(--line); }
.blog-num {
  font-size: 13px;
  font-family: 'Helvetica Neue', sans-serif;
  color: var(--gray);
  letter-spacing: 0.1em;
}
.blog-title {
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.blog-title a {
  color: inherit;
  text-decoration: none;
}
.blog-title a:hover { color: var(--electric); }
.blog-sub {
  font-size: 15px;
  color: var(--ink-soft);
  margin-top: 6px;
  font-style: italic;
}
.blog-tag {
  font-size: 11px;
  font-family: 'Helvetica Neue', sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  text-align: right;
}

.index-footer {
  margin-top: 80px;
  font-size: 11px;
  font-family: 'Helvetica Neue', sans-serif;
  color: var(--gray);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ─── Shared blog page styles ─── */
.blog-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 80px 40px 120px;
}
.blog-back {
  font-size: 12px;
  font-family: 'Helvetica Neue', sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  text-decoration: none;
  margin-bottom: 64px;
  display: inline-block;
}
.blog-back:hover { color: var(--ink); }