/* ============================================================
     MAIN — two column hero
     ============================================================ */
  .hero{
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: stretch;
    padding: clamp(28px, 3.4vw, 56px) 0 clamp(20px, 2vw, 32px);
    border-bottom: 1px solid var(--line);
    min-height: 0;
  }

  /* left column: type */
  .copy{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: clamp(20px, 2.2vw, 32px);
    min-width: 0;
  }
  .eyebrow{
    display: flex; align-items: center; gap: 14px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--ink-soft);
  }
  .eyebrow .num{
    color: var(--signal);
    border: 1px solid rgba(255,89,69,.4);
    background: rgba(255,89,69,.08);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 10px;
  }
  .eyebrow .dot{
    width: 5px; height: 5px; background: var(--ink-faint); border-radius: 50%;
  }

  .display{
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.038em;
    line-height: 0.86;
    font-size: clamp(64px, 9.4vw, 168px);
    margin: 0;
  }
  .display .dot{
    display: inline-block;
    color: var(--signal);
    font-style: italic;
    font-weight: 500;
    transform: translateY(.04em);
    margin: 0 0.01em;
    text-shadow: 0 0 30px rgba(255,89,69,.55);
  }
  .display .dim{
    color: var(--ink-soft);
  }

  .lede{
    max-width: 44ch;
    font-size: clamp(15px, 1.05vw, 17px);
    line-height: 1.55;
    color: var(--ink-soft);
  }
  .lede em{
    color: var(--ink);
    font-style: normal;
    font-weight: 600;
    border-bottom: 1px solid var(--ink-faint);
  }

  /* diagram block — sits below the copy */
  .diagram{
    position: relative;
    min-height: 420px;
    border-top: 1px solid var(--line);
    padding-top: 24px;
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    row-gap: 0;
  }
  .diagram-head{
    display: flex; justify-content: space-between; align-items: center;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--ink-soft);
    padding-bottom: 12px;
    margin-bottom: 0;
    white-space: nowrap;
  }
  .diagram-head > span{ flex: 0 0 auto; }
  .diagram-head b{ color: var(--ink); font-weight: 600; }
  .diagram-head .seq span{ opacity: .45; padding: 0 6px; }
  .diagram-head .seq b{ color: var(--ink); }
  .diagram-head .seq em{ color: var(--ink-faint); font-style: normal; padding: 0 2px;}
  .seq-btn{
    background: none; border: none; padding: 0 2px; margin: 0;
    color: var(--ink-faint);
    font: inherit; letter-spacing: inherit; text-transform: inherit;
    cursor: pointer;
    transition: color var(--dur-base) var(--ease-out-soft);
    -webkit-font-smoothing: inherit;
  }
  .seq-btn:hover{ color: var(--ink-soft); }
  .seq-btn.active{ color: var(--ink); }

  /* ============================================================

  @media (max-width: 720px){
    .hero{ padding: 16px 0 16px; gap: 16px; }
    .copy{ gap: 14px; }
    .eyebrow{ flex-wrap: wrap; gap: 8px 12px; font-size: 10px; letter-spacing: .14em; }
    .display{ font-size: clamp(44px, 14vw, 60px); letter-spacing: -0.03em; }
    .lede{ font-size: 14px; line-height: 1.5; margin-top: 16px !important; }
  }