.exchange-panel { margin: 44px 0; scroll-margin-top: 100px; }
.exchange-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.exchange-heading .section-heading { min-width: 0; margin-bottom: 0; }
.exchange-heading .button { width: auto; flex-shrink: 0; }
.exchange-heading .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.exchange-manual-rate { grid-column: 1 / -1; margin-bottom: 22px; padding-bottom: 22px; border-bottom: 1px solid var(--border); }
.exchange-rate-help { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.6; }
.exchange-card .exchange-manual-rate .input-unit { max-width: 540px; min-height: 64px; background: var(--surface-muted); }
.exchange-card .exchange-manual-rate .input-unit input { font-size: 22px; }
.exchange-card .exchange-manual-rate .input-unit input::placeholder { font-size: 16px; font-weight: 400; }
.exchange-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 6px; background: var(--surface-muted); border: 1px solid var(--border); border-radius: 10px 10px 0 0; }
.exchange-tabs button { min-height: 56px; border: 1px solid transparent; border-radius: 6px; background: transparent; color: var(--muted); font: inherit; font-size: 17px; font-weight: 750; cursor: pointer; }
.exchange-tabs button span { margin-left: 6px; font-size: 13px; font-weight: 500; }
.exchange-tabs button[aria-selected="true"] { background: var(--surface); color: var(--primary); border-color: var(--primary); }
.exchange-panel button:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
.exchange-card { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 28px; min-width: 0; padding: 28px; border: 1px solid var(--border); border-top: 0; border-radius: 0 0 10px 10px; background: var(--surface); }
.exchange-card[hidden] { display: none; }
.exchange-card h3 { margin: 0 0 22px; font-size: 19px; }
.exchange-card h3 span { color: var(--muted); font-size: 14px; font-weight: 500; }
.exchange-rate { margin: 0 0 22px; text-align: right; font-size: 15px; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.exchange-card .field-group { align-content: start; }
.exchange-card .input-unit { min-height: 78px; padding: 0 18px; border: 1px solid var(--border); background: var(--surface); }
.exchange-card .input-unit:focus-within { border-color: var(--primary); background: var(--primary-soft); }
.exchange-card .input-unit input { font-size: clamp(20px, 2.5vw, 30px); font-variant-numeric: tabular-nums; }
.exchange-shortcuts { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 18px 0 22px; }
.exchange-shortcuts > span { width: 100%; font-size: 12px; color: var(--muted); }
.exchange-shortcuts button { min-height: 44px; padding: 8px 15px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); font: inherit; font-size: 14px; cursor: pointer; }
.exchange-shortcuts button:hover { border-color: var(--primary); color: var(--primary); }
.exchange-shortcuts .exchange-clear { margin-left: auto; color: var(--muted); }
.exchange-card output { grid-column: 1 / -1; display: block; min-height: 88px; padding: 20px; border-radius: 6px; background: var(--surface-muted); font-size: clamp(19px, 2.6vw, 28px); font-weight: 750; line-height: 1.5; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.exchange-card output::before { content: "환산 결과"; display: block; margin-bottom: 6px; font-size: 12px; font-weight: 500; color: var(--muted); }
.exchange-status, .exchange-note { color: var(--muted); font-size: 13px; line-height: 1.7; }
.exchange-status { min-height: 24px; margin: 14px 0; }
.exchange-note { margin: 14px 0 0; }
.exchange-note a { text-decoration: underline; text-underline-offset: 3px; }
.exchange-guide { margin-top: 18px; border-top: 1px solid var(--border); padding-top: 16px; font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; }
.exchange-guide summary { cursor: pointer; font-weight: 700; padding: 8px 0; }
.exchange-guide summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.exchange-guide h3 { margin: 18px 0 8px; font-size: 16px; }
.exchange-guide p { margin: 10px 0; }
.exchange-guide ul { padding-left: 22px; }
.exchange-guide a { text-decoration: underline; text-underline-offset: 3px; }
.exchange-card input[aria-invalid="true"] { color: var(--danger); }
.exchange-panel input:disabled, .exchange-panel button:disabled { opacity: .55; cursor: not-allowed; }
@media (max-width: 560px) {
  .exchange-heading { align-items: flex-start; flex-direction: column; }
  .exchange-tabs button { font-size: 16px; }
  .exchange-tabs button span { display: block; margin: 3px 0 0; font-size: 12px; }
  .exchange-card { grid-template-columns: minmax(0, 1fr); padding: 20px; }
  .exchange-card h3 { margin-bottom: 6px; }
  .exchange-rate { text-align: left; margin-bottom: 20px; }
  .exchange-card .field-group + .field-group { margin-top: 18px; }
  .exchange-card .input-unit { min-height: 68px; }
  .exchange-card .input-unit input { font-size: 24px; }
  .exchange-shortcuts button { padding: 8px 10px; }
  .exchange-shortcuts .exchange-clear { margin-left: 0; }
  .exchange-card output { padding: 16px; }
}