/* ===== Timeline ===== */
  .timeline {
    max-width: 1280px;
    margin: 0 auto;
    padding: 40px 40px 80px;
    position: relative;
  }
  .month {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 32px;
    padding: 40px 0;
    border-top: 1px solid var(--line);
    position: relative;
  }
  .month:first-child { border-top: none; padding-top: 20px; }
  .month-empty { opacity: 0.55; }
  .month-head {
    display: contents;
  }
  .month-axis {
    position: sticky;
    top: 120px;
    height: 36px;
    display: flex;
    align-items: center;
    gap: 14px;
    align-self: start;
  }
  .month-num {
    font-family: "Geist Mono", monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-soft);
    letter-spacing: 0.05em;
  }
  .month-dot {
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--ink);
    position: relative;
    flex-shrink: 0;
  }
  .month-empty .month-dot { background: transparent; border: 1.5px solid var(--ink-soft); }
  .month-dot::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 30px;
    width: 1px;
    height: calc(100% + 100vh);
    background: var(--line);
    z-index: -1;
  }
  .month-title-wrap {
    padding-top: 2px;
  }
  .month-title {
    font-family: "Fraunces", serif;
    font-size: 36px;
    font-weight: 400;
    font-variation-settings: "opsz" 48, "SOFT" 20;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 10px;
  }
  .month-label { color: var(--ink); }
  .month-year {
    color: var(--ink-soft);
    font-style: italic;
    font-weight: 300;
    margin-left: 4px;
  }
  .month-stats {
    font-family: "Geist Mono", monospace;
    font-size: 11px;
    color: var(--ink-soft);
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }
  .month-body {
    grid-column: 2;
    margin-top: 20px;
  }
  .month-breakdown {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 20px;
    padding-bottom: 18px;
    border-bottom: 1px dashed var(--line);
  }
  .chrow-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: "Geist Mono", monospace;
    font-size: 11px;
    color: var(--ink-muted);
  }
  .chrow-dot {
    width: 8px; height: 8px; border-radius: var(--radius-sm);
  }
  .chrow-code { color: var(--ink); font-weight: 500; }
  .chrow-count { color: var(--ink-soft); }

  .empty-month {
    padding: 20px 0;
    color: var(--ink-soft);
    font-style: italic;
    font-family: "Fraunces", serif;
    font-size: 17px;
    max-width: 540px;
  }