.volume-area-page {
  --va-ink: #1d3028;
  --va-muted: #58675e;
  --va-green: #315943;
  --va-paper: #f4f2e9;
  --va-line: #cdd2c8;
  --va-sand: #e8e2d3;
  --va-blue: #567d8b;
  color: var(--va-ink);
  background: var(--va-paper);
}
.volume-area-page * { box-sizing: border-box; }
.volume-area-page .page-shell { width: min(1160px, calc(100% - 40px)); }
.volume-area-page .site-header { min-height: 66px; }
.volume-area-page .site-header, .volume-area-page .site-nav, .volume-area-page .brand { color: var(--va-ink); }
.volume-main { padding-top: 18px; padding-bottom: 54px; }
.volume-crumb { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin: 0 0 12px; color: var(--va-muted); font-size: .78rem; }
.volume-crumb a, .volume-area-page a { color: var(--va-green); font-weight: 720; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.volume-intro { display: flex; align-items: end; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--va-line); padding: 10px 0 17px; }
.volume-eyebrow { margin: 0 0 6px; color: var(--va-blue); font-size: .75rem; font-weight: 700; }
.volume-intro h1 { max-width: 780px; margin: 0; color: var(--va-ink); font: 400 clamp(2.05rem, 4.5vw, 3.4rem)/1.04 Georgia, 'Times New Roman', serif; letter-spacing: -.045em; }
.volume-lead { max-width: 760px; margin: 10px 0 0; color: var(--va-muted); font-size: .98rem; line-height: 1.58; }
.volume-quick-read { display: flex; flex-wrap: wrap; align-items: baseline; gap: 7px; margin: 12px 0 0; border-top: 1px solid var(--va-blue); padding-top: 7px; color: var(--va-muted); font-size: .73rem; line-height: 1.4; }
.volume-quick-read strong { color: var(--va-green); font: 400 1.15rem Georgia, 'Times New Roman', serif; font-variant-numeric: tabular-nums; }
.volume-quick-read b { color: var(--va-ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.volume-mark { display: grid; flex: 0 0 auto; gap: 4px; margin: 0; border-left: 2px solid var(--va-blue); padding: 6px 0 6px 12px; color: var(--va-green); font-size: .65rem; font-weight: 800; letter-spacing: .07em; }
.volume-tool { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr); margin-top: 18px; border: 1px solid var(--va-line); background: #fbfaf5; }
.volume-inputs { min-width: 0; padding: 23px 24px 21px; }
.volume-input-heading { display: flex; align-items: start; gap: 11px; margin: 0 0 18px; }
.volume-index { display: grid; flex: 0 0 27px; place-items: center; width: 27px; height: 27px; border: 1px solid var(--va-blue); color: var(--va-blue); font-size: .73rem; font-weight: 800; }
.volume-input-heading h2 { margin: 0; color: var(--va-ink); font-size: 1.04rem; line-height: 1.25; }
.volume-input-heading p { margin: 4px 0 0; color: var(--va-muted); font-size: .77rem; line-height: 1.45; }
.volume-fields { display: grid; gap: 15px; }
.volume-field { display: grid; min-width: 0; gap: 6px; color: var(--va-ink); font-size: .78rem; font-weight: 720; }
.volume-field em { margin-left: 5px; color: var(--va-blue); font-size: .68rem; font-style: normal; font-weight: 600; }
.volume-field small { color: var(--va-muted); font-size: .69rem; font-weight: 450; line-height: 1.45; }
.volume-entry { display: grid; grid-template-columns: minmax(0, 1fr) minmax(100px, .62fr); gap: 7px; }
.volume-entry input, .volume-entry select { width: 100%; min-width: 0; min-height: 44px; border: 1px solid #aab4aa; border-radius: 2px; padding: 8px 10px; color: var(--va-ink); background: #fffefa; font: 500 .94rem 'Segoe UI', Arial, sans-serif; font-variant-numeric: tabular-nums; }
.volume-entry input:focus-visible, .volume-entry select:focus-visible, .volume-button:focus-visible, .volume-copy:focus-visible, .volume-area-page a:focus-visible { outline: 3px solid #567d8b66; outline-offset: 2px; }
.volume-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 16px; }
.volume-button, .volume-copy { min-height: 44px; border: 1px solid var(--va-green); border-radius: 2px; padding: 9px 13px; color: var(--va-green); background: transparent; font: 700 .78rem 'Segoe UI', Arial, sans-serif; cursor: pointer; }
.volume-button:hover { color: #fffefa; background: var(--va-green); }
.volume-button.secondary { border-color: var(--va-line); color: var(--va-muted); }
.volume-hint { margin: 13px 0 0; border-left: 2px solid var(--va-blue); padding-left: 10px; color: var(--va-muted); font-size: .74rem; line-height: 1.52; }
.volume-error { min-height: 1.1em; margin: 8px 0 0; color: #8f352c; font-size: .75rem; line-height: 1.4; }
.volume-result { display: flex; flex-direction: column; min-width: 0; border-left: 1px solid var(--va-line); padding: 22px 23px 19px; background: #f1f2ec; }
.volume-result > * { min-width: 0; max-width: 100%; overflow-wrap: anywhere; }
.result-ticket-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; border-bottom: 1px solid #c7d0c6; padding-bottom: 8px; }
.result-ticket-head p { margin: 0; color: var(--va-blue); font-size: .67rem; font-weight: 800; letter-spacing: .08em; }
.result-ticket-head span { color: var(--va-muted); font-size: .61rem; font-weight: 700; }
.volume-result h2 { margin: 14px 0 0; color: var(--va-ink); font: 400 1.45rem/1.2 Georgia, 'Times New Roman', serif; }
.volume-status { min-height: 38px; margin: 7px 0 10px; color: var(--va-muted); font-size: .75rem; line-height: 1.45; }
.coverage-reading { position: relative; border-top: 2px solid var(--va-green); border-bottom: 1px solid #c7d0c6; padding: 12px 0 13px; }
.coverage-reading::before { position: absolute; top: -5px; left: 0; width: 1px; height: 8px; background: var(--va-blue); content: ''; }
.coverage-reading > span { display: block; color: var(--va-muted); font-size: .72rem; }
.coverage-reading strong { display: block; margin: 3px 0; color: var(--va-green); font: 400 clamp(2.3rem, 4.1vw, 3.2rem)/1.04 Georgia, 'Times New Roman', serif; letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.coverage-reading .coverage-secondary { color: var(--va-ink); font-size: .92rem; font-weight: 700; }
.volume-details { display: grid; gap: 0; margin: 11px 0; }
.volume-details > div { display: flex; justify-content: space-between; gap: 10px; border-bottom: 1px dotted #c8cec5; padding: 6px 0; font-size: .72rem; }
.volume-details dt { color: var(--va-muted); }
.volume-details dd { margin: 0; color: var(--va-ink); font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }
.area-comparison { margin: 5px 0 13px; border-left: 2px solid var(--va-blue); padding: 2px 0 2px 11px; }
.comparison-heading { display: flex; align-items: center; gap: 7px; }
.comparison-rule { width: 18px; height: 1px; background: var(--va-blue); }
.comparison-heading h3 { margin: 0; color: var(--va-ink); font-size: .77rem; }
.area-comparison p { margin: 7px 0 3px; color: var(--va-muted); font-size: .72rem; line-height: 1.42; }
.area-comparison > strong { display: block; color: var(--va-green); font-size: .9rem; line-height: 1.4; }
.area-comparison > span { display: block; margin-top: 2px; color: var(--va-muted); font-size: .69rem; }
.volume-copy { display: flex; justify-content: space-between; align-items: center; width: 100%; margin-top: auto; border-color: var(--va-green); color: #fffefa; background: var(--va-green); text-align: left; }
.volume-copy:hover:not(:disabled) { background: #254a36; }
.volume-copy:disabled { cursor: not-allowed; opacity: .58; }
.copy-status { min-height: 1em; margin: 5px 0 0; color: var(--va-muted); font-size: .68rem; }
.copy-fallback { width: 100%; margin-top: 5px; border: 1px solid #9da99c; padding: 8px; color: var(--va-ink); background: #fffefa; font: .75rem 'Segoe UI', Arial, sans-serif; }
.result-boundary { margin: 9px 0 0; color: var(--va-muted); font-size: .66rem; line-height: 1.45; }
.volume-tool-footer { display: flex; grid-column: 1 / -1; flex-wrap: wrap; justify-content: space-between; gap: 8px 14px; border-top: 1px solid var(--va-line); padding: 10px 15px; color: var(--va-muted); background: var(--va-sand); font-size: .67rem; }
.volume-tool-footer b { color: var(--va-blue); font-variant-numeric: tabular-nums; }
.volume-figure { max-width: 1000px; margin: 28px auto 34px; }
.volume-figure img { display: block; width: 100%; height: auto; border: 1px solid var(--va-line); background: #fbfaf5; }
.volume-figure figcaption { margin-top: 7px; color: var(--va-muted); font-size: .73rem; line-height: 1.45; text-align: center; }
.volume-section { max-width: 980px; margin: 0 auto 29px; }
.volume-section h2 { margin: 0 0 9px; color: var(--va-ink); font: 400 clamp(1.35rem, 2.9vw, 1.8rem)/1.2 Georgia, 'Times New Roman', serif; }
.volume-section p { margin: 0 0 10px; color: var(--va-muted); font-size: .86rem; line-height: 1.66; }
.volume-formula { margin: 14px 0; border-left: 2px solid var(--va-blue); padding: 10px 13px; color: var(--va-ink); background: #e9ece5; font-size: .88rem; line-height: 1.7; font-variant-numeric: tabular-nums; }
.volume-faq details { border-top: 1px solid var(--va-line); padding: 11px 0; }
.volume-faq details:last-child { border-bottom: 1px solid var(--va-line); }
.volume-faq summary { color: var(--va-green); font-size: .89rem; font-weight: 730; cursor: pointer; }
.volume-faq details p { max-width: 850px; margin: 7px 0 0; font-size: .82rem; }
.volume-related { border-top: 1px solid var(--va-line); padding-top: 17px; }
.volume-area-page .site-footer { margin-top: 0; }
@media (max-width: 900px) {
  .volume-tool { grid-template-columns: minmax(0, 1fr); }
  .volume-result { grid-row: 2; border-top: 1px solid var(--va-line); border-left: 0; }
  .volume-inputs { grid-row: 1; }
  .volume-tool-footer { grid-row: 3; }
}
@media (max-width: 650px) {
  .volume-area-page .page-shell { width: min(100% - 24px, 1160px); }
  .volume-area-page .site-header.page-shell { width: 100%; min-height: 0; padding: 8px 10px; flex-direction: column; align-items: stretch; gap: 4px; }
  .volume-area-page .brand { gap: 6px; font-size: 15px; letter-spacing: -.45px; }
  .volume-area-page .brand-symbol { flex-basis: 24px; width: 24px; height: 24px; }
  .volume-area-page .brand-symbol svg { width: 19px; height: 19px; }
  .volume-area-page .site-nav { display: grid; width: 100%; min-width: 0; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 3px; padding: 0; }
  .volume-area-page .site-nav a { min-height: 40px; padding: 4px 1px; font-size: 11.5px; line-height: 1.15; text-align: center; white-space: normal; overflow-wrap: anywhere; }
  .volume-main { padding-top: 12px; }
  .volume-intro { align-items: start; gap: 10px; }
  .volume-intro h1 { font-size: clamp(1.85rem, 8vw, 2.55rem); }
  .volume-lead { margin-top: 8px; font-size: .9rem; }
  .volume-quick-read { margin-top: 8px; }
  .volume-mark { font-size: .57rem; }
  .volume-tool { margin-top: 13px; }
  .volume-inputs, .volume-result { padding: 17px 14px; }
  .volume-fields { gap: 12px; }
  .volume-entry { grid-template-columns: minmax(0, 1fr) minmax(93px, .7fr); gap: 6px; }
  .volume-actions { align-items: stretch; flex-direction: column; }
  .volume-button { width: 100%; }
  .coverage-reading strong { font-size: 2.65rem; }
  .volume-tool-footer { justify-content: flex-start; gap: 8px 16px; padding: 9px 12px; }
  .volume-figure { margin: 21px auto 27px; }
  .volume-section { margin-bottom: 25px; }
}
@media (max-width: 390px) {
  .volume-area-page .page-shell { width: calc(100% - 20px); }
  .volume-intro { display: block; }
  .volume-mark { display: flex; gap: 12px; margin-top: 9px; border-top: 1px solid var(--va-line); border-left: 0; padding: 7px 0 0; }
  .volume-intro h1 { font-size: 1.92rem; }
  .volume-entry { grid-template-columns: minmax(0, 1fr) minmax(88px, .72fr); }
  .result-ticket-head span { font-size: .55rem; }
  .coverage-reading strong { font-size: 2.35rem; }
  .volume-result h2 { font-size: 1.3rem; }
  .volume-status, .volume-hint, .result-boundary { overflow-wrap: anywhere; }
}