.tool-page { padding-bottom: 94px; }
.tool-shell { width: min(calc(100% - 44px), 1000px); margin-inline: auto; }
.tool-hero {
  display: grid;
  grid-template-columns: 130px 1fr;
  column-gap: 44px;
  padding: 86px 0 54px;
}
.tool-hero .section-kicker {
  grid-column: 1;
  grid-row: 1 / span 2;
  margin: 7px 0 0;
  padding-top: 11px;
  border-top: 2px solid var(--proof);
  color: var(--muted);
}
.tool-hero h1 {
  grid-column: 2;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(45px, 7vw, 76px);
  line-height: 1.02;
  letter-spacing: -.068em;
  font-weight: 760;
  text-wrap: balance;
}
.tool-hero > p:last-child {
  grid-column: 2;
  max-width: 710px;
  margin: 25px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
  text-wrap: pretty;
}

.calculator-wrap {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: transparent;
}
.calculator-inputs {
  display: grid;
  align-content: start;
  gap: 22px;
  padding: 30px 34px 34px 0;
  border-right: 1px solid var(--rule);
}
.calculator-inputs label > span {
  display: block;
  margin-bottom: 8px;
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
}
.calculator-inputs small {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}
.calculator-inputs input,
.calculator-inputs select {
  width: 100%;
  min-height: 50px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: 0;
  background: rgba(251,252,250,.62);
  color: var(--ink);
  padding: 0 14px;
  font-variant-numeric: tabular-nums;
  transition: border-color .16s ease, background .16s ease;
}
.calculator-inputs input:focus,
.calculator-inputs select:focus {
  border-color: var(--proof);
  background: var(--white);
}
.input-with-unit { position: relative; }
.input-with-unit input { padding-right: 54px; }
.input-with-unit strong {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font: 700 10px var(--mono);
}

.calculator-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: stretch;
  margin: 18px 0 18px 34px;
  border: 1px solid #353a33;
  background: var(--screen);
  color: var(--white);
  font-family: var(--mono);
}
.result-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 220px;
  padding: 23px;
  border-right: 1px solid rgba(255,255,255,.1);
  background: transparent;
}
.result-card:nth-child(2) { border-right: 0; }
.result-card.is-primary {
  position: relative;
  color: var(--white);
}
.result-card.is-primary::before {
  content: "PRIMARY";
  position: absolute;
  left: 23px;
  top: 20px;
  color: var(--proof);
  font-size: 8px;
  letter-spacing: .1em;
}
.result-card span { color: var(--screen-muted); font-size: 10px; letter-spacing: .04em; }
.result-card strong {
  margin-top: 14px;
  font-size: clamp(34px, 4.8vw, 52px);
  line-height: 1;
  letter-spacing: -.055em;
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}
.result-card small { margin-top: 8px; color: #7f887d; font-size: 9px; }
.calculator-verdict {
  grid-column: 1 / -1;
  margin: 0;
  padding: 18px 22px;
  border-top: 1px solid rgba(255,255,255,.1);
  color: #c3cac0;
  font-family: var(--body);
  font-size: 12px;
  line-height: 1.65;
}
.calculator-verdict::before {
  content: "STATUS  ";
  color: var(--screen-muted);
  font: 700 9px var(--mono);
  letter-spacing: .08em;
}
.calculator-verdict.is-good { color: #cde4d5; }
.calculator-verdict.is-tight { color: #e7d5aa; }
.calculator-verdict.is-low { color: #e7b7ae; }
.calculator-verdict.is-good::before { color: #78aa8b; }
.calculator-verdict.is-tight::before { color: #b89552; }
.calculator-verdict.is-low::before { color: var(--proof); }

.tool-explain {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  padding-block: 72px 52px;
}
.tool-explain > div { padding-top: 18px; border-top: 1px solid var(--ink); }
.tool-explain h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: -.04em;
}
.tool-explain p { margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.formula-note {
  padding: 22px 0 0 28px;
  border-left: 2px solid var(--proof);
  color: var(--muted);
  font-size: 12px;
}
.formula-note p { margin: 4px 0; }
.formula-note strong { color: var(--ink); font-family: var(--mono); font-size: 10px; letter-spacing: .06em; }

@media (max-width: 820px) {
  .tool-shell { width: min(calc(100% - 28px), 1000px); }
  .tool-hero { grid-template-columns: 1fr; padding-top: 58px; }
  .tool-hero .section-kicker { grid-column: auto; grid-row: auto; width: max-content; margin: 0 0 18px; padding-top: 8px; }
  .tool-hero h1,
  .tool-hero > p:last-child { grid-column: auto; }
  .tool-hero h1 { font-size: clamp(39px, 12vw, 56px); }
  .calculator-wrap { grid-template-columns: 1fr; }
  .calculator-inputs { padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--rule); }
  .calculator-results { margin: 22px 0 28px; }
  .tool-explain { grid-template-columns: 1fr; gap: 30px; padding-top: 58px; }
}

@media (max-width: 560px) {
  .calculator-results { grid-template-columns: 1fr; }
  .result-card { min-height: 160px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .result-card:nth-child(2) { border-bottom: 0; }
  .calculator-verdict { grid-column: auto; }
}