main { max-width: var(--content-max-width, 1280px); margin: 0 auto; padding: 36px 24px; }
  .hero-label { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 6px; }
  h1 { font-size: 24px; font-weight: 600; letter-spacing: -.5px; margin-bottom: 8px; }
  .subtitle { font-size: 14px; color: var(--muted); line-height: 1.6; margin-bottom: 28px; }

  .doubling-layout { display: grid; grid-template-columns: 1fr 60px 1fr; gap: 0; align-items: start; }
  @media (max-width: 700px) { .doubling-layout { grid-template-columns: 1fr; } .arrow-col { transform: rotate(90deg); } }

  .panel { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
  .panel-label { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 14px; }
  .panel-title { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
  .panel-specs { font-size: 12px; color: var(--muted); font-family: 'DM Mono', monospace; margin-bottom: 14px; }

  .arrow-col { display: flex; align-items: center; justify-content: center; padding-top: 80px; }
  .arrow-col svg { color: var(--brass); }

  .search-box { position: relative; margin-bottom: 14px; }
  .search-input { width: 100%; padding: 10px 14px; font-family: 'DM Sans', sans-serif; font-size: 14px; border: 2px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); outline: none; }
  .search-input:focus { border-color: var(--brass); }
  .ac-list { position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 50; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.1); max-height: 220px; overflow-y: auto; display: none; }
  .ac-list.is-open { display: block; }
  .ac-list-item { padding: 9px 14px; cursor: pointer; font-size: 13px; border-bottom: 1px solid var(--faint); }
  .ac-list-item:last-child { border-bottom: none; }
  .ac-list-item:hover { background: var(--brass-l); }

  .primary-card { margin-bottom: 14px; padding: 14px; background: var(--brass-l); border-radius: 10px; display: none; }
  .primary-card.visible { display: block; }
  .primary-name { font-weight: 600; font-size: 15px; }
  .primary-change { font-size: 12px; color: var(--brass); cursor: pointer; float: right; }

  .target-select { margin-bottom: 14px; }
  .target-select select { width: 100%; font-family: 'DM Sans', sans-serif; font-size: 14px; padding: 10px 14px; border: 2px solid var(--border); border-radius: 10px; background: var(--surface); outline: none; }

  .rules-card { background: var(--faint); border-radius: 12px; padding: 16px 18px; margin-bottom: 16px; display: none; }
  .rules-card.visible { display: block; }
  .rules-title { font-size: 13px; font-weight: 600; margin-bottom: 10px; }
  .rules-list { display: flex; flex-direction: column; gap: 6px; }
  .rule-item { font-size: 12px; color: var(--muted); line-height: 1.5; padding: 6px 10px; background: var(--surface); border-radius: 8px; }
  .rule-item strong { font-weight: 600; color: var(--text); }
  .rule-warning { margin-top: 10px; padding: 10px 14px; background: #FDEAEA; border-radius: 8px; font-size: 12px; color: #B03C3C; }
  .rule-explanation { margin-top: 10px; font-size: 12px; color: var(--muted); line-height: 1.5; }

  .rec-list { display: flex; flex-direction: column; gap: 10px; }
  .rec-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; transition: .15s; }
  .rec-card:hover { border-color: var(--brass-b); }
  .rec-card.hero { border: 2px solid var(--brass); }
  .rec-header { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
  .rec-badge { font-size: 9px; font-weight: 600; text-transform: uppercase; padding: 3px 8px; border-radius: 6px; }
  .rec-badge.top { background: var(--brass-l); color: var(--brass-d); }
  .rec-badge.alt { background: var(--faint); color: var(--muted); }
  .rec-name { font-weight: 600; font-size: 14px; }
  .rec-reason { font-size: 12px; color: var(--muted); line-height: 1.4; margin-bottom: 8px; }
  .rec-actions { display: flex; gap: 6px; }

  .empty-right { text-align: center; color: var(--muted); font-size: 13px; padding: 40px 16px; }