.tree-ring-page { background: #f1f0ea; }
.tree-ring-page .brand { display: inline-flex; align-items: center; gap: 8px; }
.tree-ring-page .brand-symbol { display: inline-flex; width: 28px; height: 28px; flex: 0 0 28px; }
.tree-ring-page .brand-symbol svg { display: block; width: 100%; height: 100%; }
.tree-ring-page .brand-pro { margin-left: 2px; color: #286b4e; font-size: .67em; letter-spacing: .01em; }
.tree-ring-page .ring-skip { position: absolute; left: -9999px; top: 0; z-index: 20; padding: 12px; background: #fffefa; }
.tree-ring-page .ring-skip:focus { left: 12px; }
.tree-ring-page .ring-main { padding-top: 16px; }
.tree-ring-page .ring-crumb { margin: 0 0 15px; color: #68746c; font-size: .87rem; }
.tree-ring-page .ring-crumb a { font-weight: 700; }
.tree-ring-page h1 { max-width: 18ch; margin: 0 0 10px; }
.tree-ring-page .ring-lead { max-width: 63ch; margin: 0 0 20px; color: #42554a; font-size: 1.04rem; line-height: 1.55; }
.tree-ring-page .ring-result { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; margin: 0 0 23px; padding: 19px 24px; border: 1px solid #91b09e; border-left: 6px solid #286b4e; background: #fffefa; }
.tree-ring-page .ring-result h2 { margin: 0 0 2px; font-size: .97rem; }
.tree-ring-page .ring-amount { display: flex; align-items: baseline; gap: 9px; margin: 0; font-variant-numeric: tabular-nums; }
.tree-ring-page .ring-amount strong { font-size: clamp(2.35rem, 7vw, 3.5rem); line-height: 1; letter-spacing: -.045em; }
.tree-ring-page .ring-amount span { color: #42554a; font-size: 1.08rem; font-weight: 700; }
.tree-ring-page .ring-secondary { margin: 5px 0 0; color: #42554a; font-variant-numeric: tabular-nums; }
.tree-ring-page .ring-result > [role="status"] { flex: 1 1 19rem; max-width: 37ch; margin: 0; color: #42554a; font-size: .9rem; }
.tree-ring-page #ring-copy { min-height: 44px; padding: 9px 16px; border: 0; border-radius: 3px; color: white; background: #286b4e; font-weight: 750; }
.tree-ring-page #ring-copy:disabled { background: #b5c0b7; cursor: not-allowed; }
.tree-ring-page #ring-copy-status { width: 100%; margin: 0; font-size: .85rem; }
.tree-ring-page #ring-copy-fallback { width: 100%; min-height: 130px; padding: 11px 13px; border: 1px solid #9daea2; border-radius: 3px; color: #1f3028; background: #fff; font: inherit; line-height: 1.5; }
.tree-ring-page .ring-layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(250px, .7fr); gap: 24px; align-items: start; }
.tree-ring-page .ring-measures, .tree-ring-page .ring-aside { border: 1px solid #d8ded8; background: #fffefa; }
.tree-ring-page .ring-measures { padding: 22px; }
.tree-ring-page .ring-section-heading { border-bottom: 1px solid #d8ded8; margin-bottom: 18px; }
.tree-ring-page .ring-section-heading h2, .tree-ring-page .ring-detail h2 { font-size: 1.4rem; letter-spacing: -.02em; }
.tree-ring-page .ring-section-heading p { margin: 0 0 14px; color: #536259; }
.tree-ring-page .ring-mode-selector { margin: 0 0 16px; padding: 0 0 13px; border: 0; border-bottom: 1px solid #d8ded8; }
.tree-ring-page .ring-mode-selector legend { margin-bottom: 9px; padding: 0; color: #1f3028; font-weight: 800; }
.tree-ring-page .ring-mode-options { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.tree-ring-page .ring-mode-options label { display: inline-flex; min-height: 44px; align-items: center; gap: 8px; color: #1f3028; font-size: .93rem; font-weight: 720; }
.tree-ring-page .ring-mode-options input { width: 18px; height: 18px; margin: 0; accent-color: #286b4e; }
.tree-ring-page .ring-mode-help, .tree-ring-page .ring-mode-note { max-width: 70ch; margin: 8px 0 0; color: #536259; font-size: .86rem; line-height: 1.5; }
.tree-ring-page .ring-mode-note { margin: 0 0 12px; }
.tree-ring-page .ring-row { min-width: 0; margin: 0 0 16px; padding: 16px; border: 1px solid #d8ded8; }
.tree-ring-page .ring-row legend { padding: 0 6px; font-weight: 800; }
.tree-ring-page .ring-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px 16px; }
.tree-ring-page .ring-fields label, .tree-ring-page .ring-bag-field { display: block; color: #1f3028; font-size: .91rem; font-weight: 720; }
.tree-ring-page .ring-fields label span, .tree-ring-page .ring-bag-field > span { color: #536259; font-size: .8rem; font-weight: 500; }
.tree-ring-page .ring-fields input, .tree-ring-page .ring-bag-field input { display: block; width: 100%; height: 45px; margin: 5px 0 0; padding: 8px 11px; border: 1px solid #9daea2; border-radius: 3px; color: #1f3028; background: #fff; font-size: 1rem; font-variant-numeric: tabular-nums; }
.tree-ring-page input:focus-visible, .tree-ring-page #ring-copy-fallback:focus, .tree-ring-page button:focus-visible, .tree-ring-page summary:focus-visible, .tree-ring-page a:focus-visible { outline: 3px solid #e4a043; outline-offset: 2px; }
.tree-ring-page .ring-remove { min-height: 44px; margin: 13px 0 0; padding: 9px 0; border: 0; border-bottom: 1px solid currentColor; background: transparent; color: #76543a; font-weight: 700; }
.tree-ring-page #ring-add { min-height: 44px; margin-bottom: 18px; padding: 8px 13px; border: 1px solid #286b4e; border-radius: 3px; color: #194d39; background: #e6efe8; font-weight: 800; }
.tree-ring-page #ring-undo { min-height: 44px; margin: 0 0 18px 12px; padding: 8px 0; border: 0; border-bottom: 1px solid currentColor; color: #76543a; background: transparent; font-weight: 750; }
.tree-ring-page #ring-undo-status { margin: -8px 0 13px; color: #536259; font-size: .86rem; }
.tree-ring-page #ring-undo-status:empty { display: none; }
.tree-ring-page .ring-bag-field { padding-top: 17px; border-top: 1px solid #d8ded8; }
.tree-ring-page .ring-bag-field input { max-width: 190px; }
.tree-ring-page .ring-bag-field small { display: block; margin-top: 6px; color: #536259; font-size: .8rem; font-weight: 450; }
.tree-ring-page .ring-aside { padding: 18px; }
.tree-ring-page .ring-aside figure { margin: 0 0 13px; }
.tree-ring-page .ring-aside img { display: block; max-width: 100%; height: auto; }
.tree-ring-page .ring-aside figcaption, .tree-ring-page .ring-aside p { color: #536259; font-size: .88rem; line-height: 1.55; }
.tree-ring-page .ring-aside p { margin-bottom: 0; }
.tree-ring-page .ring-detail { max-width: 900px; margin: 26px 0 0; padding: 21px 0 0; border-top: 1px solid #b9c8ba; }
.tree-ring-page .ring-detail p, .tree-ring-page .ring-detail li { max-width: 75ch; line-height: 1.6; }
.tree-ring-page .ring-detail ol { padding-left: 22px; }
.tree-ring-page .ring-guidance { flex: 1 1 100%; max-width: 70ch; margin: 0; padding: 11px 13px; border-left: 3px solid #76543a; background: #f7f0e8; font-size: .86rem; line-height: 1.5; }
.tree-ring-page .ring-guidance:empty { display: none; }
.tree-ring-page .ring-formula { padding: 13px 16px; border: 1px solid #d8ded8; background: #f4f5f0; line-height: 1.8; font-variant-numeric: tabular-nums; }
.tree-ring-page .ring-figure-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin: 24px 0 0; }
.tree-ring-page .ring-figure-pair figure { min-width: 0; margin: 0; }
.tree-ring-page .ring-figure-pair img { display: block; width: 100%; height: auto; border: 1px solid #d8ded8; }
.tree-ring-page .ring-figure-pair figcaption { margin-top: 8px; color: #536259; font-size: .86rem; line-height: 1.5; }
.tree-ring-page .ring-faq details { padding: 13px 0; border-top: 1px solid #d8ded8; }
.tree-ring-page .ring-faq details:last-child { border-bottom: 1px solid #d8ded8; }
.tree-ring-page .ring-faq summary { cursor: pointer; font-weight: 750; }
.tree-ring-page .ring-faq details p { margin: 10px 0 0; color: #42554a; }
.tree-ring-page .ring-next { margin-bottom: 20px; }
@media (max-width: 760px) {
  .tree-ring-page .ring-layout { grid-template-columns: 1fr; }
  .tree-ring-page .ring-figure-pair { grid-template-columns: 1fr; gap: 18px; }
  .tree-ring-page .ring-aside { max-width: 440px; }
  .tree-ring-page .site-header.page-shell { position: static; display: block; }
  .tree-ring-page .site-nav { display: flex; flex-wrap: wrap; gap: 4px 13px; margin-top: 10px; }
}
@media (max-width: 420px) {
  .tree-ring-page .ring-main { width: min(100% - 22px, 1120px); }
  .tree-ring-page .ring-result { padding: 15px; }
  .tree-ring-page .ring-fields { grid-template-columns: 1fr; }
  .tree-ring-page .ring-measures { padding: 16px; }
  .tree-ring-page .ring-detail { padding-top: 19px; }
  .tree-ring-page .ring-row { padding: 12px; }
  .tree-ring-page .ring-aside { padding: 12px; }
}