.jdh-calc { display:flex; flex-direction:column; gap:18px; }
.jdh-calc-panes { min-height:440px; }
.jdh-calc-mono { font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace !important; font-size:15px; letter-spacing:.01em; }
.jdh-calc-examples { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-top:16px; }
.jdh-calc-examples-l { font-size:13px; font-weight:600; color:var(--jd-muted); margin-right:2px; }
.jdh-calc-chip { max-width:100%; min-height:32px; padding:4px 12px; border-radius:100px; border:1px solid var(--jd-line); background:#F7F9FC;
  font:inherit; font-size:13px; line-height:22px; color:var(--jd-ink-2); cursor:pointer; text-align:left; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.jdh-calc-chip:hover { border-color:rgba(46,116,131,.45); background:#fff; }
@media (max-width:900px) { .jdh-calc-chip { min-height:40px; } } /* touch target (a11y audit 2026-10-12); overflow stays hidden for the ellipsis */
.jdh-calc .jdh-tt-title { display:flex; align-items:center; gap:10px; }
.jdh-calc-tag { font-size:12px; font-weight:600; line-height:20px; padding:0 8px; border-radius:100px; background:#FFF4E5; color:#9A5B00; }
.jdh-calc-out { display:flex; flex-direction:column; gap:14px; margin-top:12px; min-width:0; }
.jdh-calc-answer { display:flex; align-items:center; gap:12px; padding:14px 16px; border-radius:16px; background:linear-gradient(180deg,#F4FAF9,#fff);
  border:1px solid #DDEFEC; min-width:0; }
/* a long answer (12 roots, a long expansion) scrolls inside its own box — never under the Copy button or out of the card */
.jdh-calc-answer > :first-child { flex:1; min-width:0; font-size:18px; overflow-x:auto; overflow-y:hidden; }
.jdh-calc-answer > button { flex-shrink:0; }
.jdh-calc-answer .katex-display { margin:0; text-align:left; overflow-x:auto; overflow-y:hidden; padding-bottom:2px; }
.jdh-calc-out.is-stale .jdh-calc-answer, .jdh-calc-out.is-stale .jdh-calc-lines, .jdh-calc-out.is-stale .jdh-calc-steps, .jdh-tt-error.is-stale { opacity:.5; }
.jdh-calc-stale { margin:10px 0 0; padding:6px 10px; border-radius:10px; background:#FFF4E5; color:#9A5B00; font-size:13px; line-height:20px; }
.jdh-calc .jdh-tt-error p, .jdh-calc-answer-l, .jdh-calc-lines dt { overflow-wrap:anywhere; }
.jdh-calc-answer-l { font-size:12px; font-weight:600; color:var(--jd-teal-deep); text-transform:uppercase; letter-spacing:.04em; margin-bottom:2px; }
.jdh-calc-lines { display:grid; grid-template-columns:repeat(auto-fill, minmax(180px, 1fr)); gap:8px 16px; margin:0; }
.jdh-calc-lines > div { min-width:0; padding:8px 12px; border-radius:12px; background:#FBFCFE; border:1px solid var(--jd-line); overflow-x:auto; }
.jdh-calc-lines dt { font-size:12px; font-weight:600; color:var(--jd-muted); }
.jdh-calc-lines dd { margin:2px 0 0; font-size:15px; }
.jdh-calc-lines dd p { margin:0; }
.jdh-calc-h3 { font-size:15px; font-weight:600; color:var(--jd-ink); margin-top:4px; }
.jdh-calc-steps { margin:0; padding:0; list-style:none; counter-reset:calc-step; display:flex; flex-direction:column; gap:10px; }
.jdh-calc-steps li { position:relative; padding-left:34px; counter-increment:calc-step; min-width:0; }
.jdh-calc-steps li::before { content:counter(calc-step); position:absolute; left:0; top:0; width:24px; height:24px; border-radius:50%;
  background:#E3EFF2; color:var(--jd-teal-deep); font-size:12px; font-weight:700; display:flex; align-items:center; justify-content:center; }
.jdh-calc-steps li > p { margin:0; font-size:14px; line-height:22px; color:var(--jd-body); overflow-wrap:anywhere; }
.jdh-calc-steps .katex-display { margin:6px 0 0; text-align:left; overflow-x:auto; overflow-y:hidden; padding-bottom:2px; }
.jdh-calc-local { margin-top:2px; }
/* scientific keypad */
.jdh-calc-sci { display:flex; flex-direction:column; gap:14px; }
.jdh-calc-sci-top { display:flex; align-items:flex-end; gap:10px; }
.jdh-calc-sci-display { flex:1; display:flex; flex-direction:column; gap:6px; min-width:0; }
.jdh-calc-sci-display input { width:100%; height:52px; border:1px solid var(--jd-line); border-radius:12px; background:#FBFCFE; padding:0 14px;
  font-size:18px !important; color:var(--jd-ink); outline:0; text-align:right; }
.jdh-calc-sci-display input:focus { border-color:rgba(46,116,131,.6); box-shadow:0 0 0 3px rgba(46,116,131,.12); background:#fff; }
.jdh-calc-angle { display:inline-flex; padding:3px; border-radius:100px; background:#EEF1F6; height:44px; align-items:center; }
.jdh-calc-angle button { height:38px; min-width:52px; padding:0 12px; border:0; border-radius:100px; background:transparent; font:inherit; font-size:13px;
  font-weight:600; color:var(--jd-muted); cursor:pointer; }
.jdh-calc-angle button.is-on { background:#fff; color:var(--jd-teal-deep); box-shadow:0 1px 3px rgba(24,27,41,.12); }
.jdh-calc-keys { display:grid; grid-template-columns:repeat(6, minmax(0, 1fr)); gap:8px; }
.jdh-calc-key { height:46px; border-radius:12px; border:1px solid var(--jd-line); background:#fff; font:inherit; font-size:16px; font-weight:500;
  color:var(--jd-ink); cursor:pointer; display:inline-flex; align-items:center; justify-content:center; transition:background .12s ease, border-color .12s ease; }
.jdh-calc-key:hover { border-color:rgba(46,116,131,.45); }
.jdh-calc-key:active { transform:translateY(1px); }
.jdh-calc-key.is-num { background:#F7F9FC; font-weight:600; }
.jdh-calc-key.is-fn { font-size:14px; color:var(--jd-teal-deep); }
.jdh-calc-key.is-op { font-size:18px; color:var(--jd-teal-deep); background:#F1F7F8; }
.jdh-calc-key.is-util { font-size:14px; color:#8A1F1F; background:#FFF7F7; }
.jdh-calc-key.is-eq { background:var(--jd-teal); border-color:var(--jd-teal); color:#fff; font-size:20px; }
.jdh-calc-key.is-eq:hover { background:var(--jd-teal-deep); }
/* explain panel */
.jdh-calc-explain { background:#fff; border-radius:24px; border:1px solid rgba(24,27,41,.06); padding:22px 24px;
  box-shadow:0 30px 70px -50px rgba(24,27,41,.4), 0 2px 8px rgba(24,27,41,.04); text-align:left; }
.jdh-calc-explain-head { display:flex; align-items:center; gap:16px; }
.jdh-calc-explain-head > div { flex:1; min-width:0; }
.jdh-calc-explain-sub { margin-top:4px; font-size:14px; line-height:21px; color:var(--jd-muted); }
.jdh-calc-explain-cost { margin-top:8px; }
.jdh-calc-explain-body.is-gated { max-height:none; }
.jdh-calc-explain .jdh-tt-empty { display:flex; align-items:center; gap:8px; }
@media (max-width: 900px) {
  .jdh-calc-panes { grid-template-columns:minmax(0,1fr); }
  .jdh-calc-panes .jdh-tt-in { border-right:0; border-bottom:1px solid var(--jd-line); }
  .jdh-calc-explain-head { flex-direction:column; align-items:stretch; }
  .jdh-calc-explain-head .jdh-tt-go { margin-left:0; justify-content:center; }
}
@media (max-width: 520px) {
  .jdh-calc-keys { gap:6px; }
  .jdh-calc-key { height:44px; font-size:15px; }
  .jdh-calc-sci-top { flex-direction:column; align-items:stretch; }
  .jdh-calc-angle { align-self:flex-start; }
  .jdh-calc .jdh-tt-field.is-half { width:100%; }
}