:root {
  --tool-ink: #f8fafc;
  --tool-muted: #9aa8b9;
  --tool-line: rgba(255, 255, 255, 0.1);
  --tool-orange: #f59e0b;
  --tool-cyan: #22d3ee;
}

body {
  min-height: 100vh;
}

.tool-home-link {
  color: var(--tool-muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.tool-page {
  padding: 126px 24px 80px;
}

.tool-hero,
.tool-section {
  width: min(1080px, 100%);
  margin: 0 auto;
}

.tool-hero h1 {
  max-width: 850px;
  margin: 14px 0 18px;
  color: var(--tool-ink);
  font: 800 clamp(2.5rem, 6vw, 5.3rem) "Outfit", sans-serif;
  letter-spacing: -0.05em;
  line-height: 0.98;
}

.tool-lead {
  max-width: 760px;
  color: var(--tool-muted);
  font-size: 1.1rem;
  line-height: 1.75;
}

.tool-lead strong {
  color: var(--tool-ink);
}

.tool-calculator {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 16px;
  margin-top: 38px;
  padding: 12px;
  border: 1px solid var(--tool-line);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(34, 211, 238, 0.04)), rgba(8, 15, 28, 0.8);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.tool-inputs,
.tool-result {
  padding: 24px;
  border-radius: 18px;
}

.tool-inputs {
  display: grid;
  gap: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.tool-label {
  color: var(--tool-cyan);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tool-inputs label {
  display: grid;
  gap: 7px;
  color: var(--tool-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.tool-inputs input {
  width: 100%;
  height: 45px;
  padding: 0 13px;
  border: 1px solid var(--tool-line);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.16);
  color: var(--tool-ink);
  font: 700 1rem "Outfit", sans-serif;
}

.tool-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 7px;
}

.tool-input-row select {
  max-width: 240px;
  min-height: 45px;
  padding: 0 10px;
  border: 1px solid var(--tool-line);
  border-radius: 10px;
  background: #101827;
  color: var(--tool-ink);
  font: 650 .78rem "Inter", sans-serif;
}

.tool-inputs button {
  margin-top: 5px;
  padding: 10px 12px;
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 999px;
  background: transparent;
  color: #fbbf24;
  cursor: pointer;
  font-weight: 700;
}

.tool-result {
  display: grid;
  align-content: center;
  min-height: 300px;
  background: radial-gradient(circle at 75% 25%, rgba(34, 211, 238, 0.16), transparent 33%), rgba(255, 255, 255, 0.025);
}

.tool-result > span {
  color: var(--tool-muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tool-result strong {
  margin-top: 8px;
  color: var(--tool-ink);
  font: 800 clamp(3rem, 8vw, 6rem) "Outfit", sans-serif;
  letter-spacing: -0.06em;
  line-height: 0.9;
}

.tool-result small {
  margin-top: 10px;
  color: var(--tool-orange);
  font-size: 1rem;
  font-weight: 800;
}

.result-visual {
  height: 11px;
  margin-top: 28px;
  border-radius: 99px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
}

.result-visual i {
  display: block;
  width: 30%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--tool-orange), var(--tool-cyan));
  transition: width 300ms ease;
}

.tool-result p {
  margin: 14px 0 0;
  color: var(--tool-muted);
}

.tool-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  margin-top: 74px;
  padding-top: 56px;
  border-top: 1px solid rgba(255,255,255,.07);
}

.tool-section > .section-tag,
.tool-section > h2,
.tool-section > p {
  grid-column: 1 / -1;
}

.tool-section h2 {
  margin: 0;
  color: var(--tool-ink);
  font: 700 clamp(1.7rem, 3vw, 2.7rem) "Outfit", sans-serif;
  letter-spacing: -0.035em;
}

.tool-section p {
  max-width: 850px;
  color: var(--tool-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.tool-section-copy {
  align-self: stretch;
  padding: 22px;
  border: 1px solid var(--tool-line);
  border-radius: 20px;
  background: rgba(255,255,255,.025);
}

.tool-section-copy h2 {
  margin-top: 12px;
  font-size: 1.45rem;
}

.tool-section-copy p {
  font-size: .94rem;
}

.heading-result-visual {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 6px 12px;
  margin-top: 18px;
  padding: 14px;
  border: 1px solid rgba(34, 211, 238, .18);
  border-radius: 13px;
  background: rgba(34, 211, 238, .055);
}

.heading-result-visual > span {
  grid-column: 1 / -1;
  color: var(--tool-muted);
  font-size: .7rem;
}

.heading-result-visual strong {
  color: var(--tool-ink);
  font: 800 1.7rem "Outfit", sans-serif;
}

.heading-result-visual small {
  color: var(--tool-cyan);
  font-weight: 800;
}

.heading-result-visual > i {
  grid-column: 1 / -1;
  height: 6px;
  border-radius: 99px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
}

.heading-result-visual b {
  display: block;
  width: 30%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--tool-orange), var(--tool-cyan));
  transition: width 300ms ease;
}

.tool-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 10px;
}

.diagram-step {
  width: 100%;
  min-height: 135px;
  display: grid;
  align-content: center;
  gap: 5px;
  padding: 16px;
  border: 1px solid var(--tool-line);
  border-radius: 16px;
  background: rgba(255,255,255,.035);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.diagram-step:hover {
  border-color: rgba(34, 211, 238, .45);
  transform: translateY(-2px);
}

.diagram-step.active {
  border-color: rgba(245, 158, 11, .55);
  background: rgba(245, 158, 11, .1);
}

.diagram-step b {
  color: var(--tool-orange);
  font-size: .7rem;
}

.diagram-step span {
  color: var(--tool-ink);
  font: 700 1.05rem "Outfit", sans-serif;
}

.diagram-step small {
  color: var(--tool-muted);
  line-height: 1.4;
}

.diagram-line {
  width: 25px;
  height: 1px;
  background: var(--tool-cyan);
}

.tool-section-alt {
  display: block;
}

.tool-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 25px;
}

.tool-facts article {
  display: grid;
  gap: 7px;
  padding: 18px;
  border: 1px solid var(--tool-line);
  border-radius: 15px;
  background: rgba(255,255,255,.035);
}

.tool-facts span,
.tool-facts small {
  color: var(--tool-muted);
  font-size: .75rem;
}

.tool-facts strong {
  color: var(--tool-ink);
  font: 700 1.3rem "Outfit", sans-serif;
}

.factor-visual,
.scenario-visual,
.faq-visual {
  grid-column: 1 / -1;
  width: 100%;
  margin: 6px 0 22px;
  padding: 20px;
  border: 1px solid var(--tool-line);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(245,158,11,.07), transparent 45%),
    rgba(255,255,255,.025);
}

.factor-visual {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 22px;
  align-items: center;
}

.factor-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.factor-buttons button {
  padding: 10px 13px;
  border: 1px solid var(--tool-line);
  border-radius: 999px;
  background: rgba(255,255,255,.035);
  color: var(--tool-muted);
  cursor: pointer;
  font-weight: 700;
}

.factor-buttons button small {
  margin-left: 5px;
  color: var(--tool-orange);
}

.factor-buttons button.active {
  border-color: var(--tool-orange);
  background: rgba(245,158,11,.12);
  color: var(--tool-ink);
}

.factor-output {
  display: grid;
  gap: 7px;
}

.factor-output > span,
.factor-output > small {
  color: var(--tool-muted);
  font-size: .7rem;
}

.factor-output strong {
  color: var(--tool-ink);
  font: 800 2.2rem "Outfit", sans-serif;
}

.factor-output > div,
.faq-visual > div {
  height: 8px;
  border-radius: 99px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
}

.factor-output i,
.faq-visual i {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--tool-orange), var(--tool-cyan));
  transition: width 300ms ease;
}

.scenario-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
}

.scenario-track button {
  display: grid;
  gap: 5px;
  min-height: 86px;
  padding: 14px;
  border: 1px solid var(--tool-line);
  border-radius: 13px;
  background: rgba(255,255,255,.03);
  color: var(--tool-muted);
  text-align: left;
  cursor: pointer;
}

.scenario-track button.active {
  border-color: var(--tool-cyan);
  background: rgba(34,211,238,.08);
}

.scenario-track b {
  color: var(--tool-cyan);
  font-size: .68rem;
}

.scenario-track span {
  color: var(--tool-ink);
  font-weight: 700;
}

.scenario-output {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--tool-line);
}

.scenario-output span {
  color: var(--tool-muted);
  font-size: .72rem;
}

.scenario-output strong {
  color: var(--tool-orange);
  font: 700 .9rem "Outfit", sans-serif;
}

.faq-visual {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  margin-top: 18px;
}

.faq-visual span,
.faq-visual strong {
  color: var(--tool-muted);
  font-size: .72rem;
}

.faq-visual i {
  width: 33.333%;
}

.tool-faq {
  display: block;
  padding-bottom: 30px;
}

.tool-faq details {
  border-bottom: 1px solid var(--tool-line);
  padding: 18px 0;
}

.tool-faq summary {
  color: var(--tool-ink);
  cursor: pointer;
  font: 700 1.05rem "Outfit", sans-serif;
}

.tool-faq details p {
  margin-bottom: 0;
}

.tool-footer {
  width: min(1080px, calc(100% - 48px));
  margin: 0 auto;
  padding: 30px 0 50px;
  border-top: 1px solid var(--tool-line);
  color: var(--tool-muted);
  font-size: .85rem;
}

.tool-directory .tool-hero {
  margin-bottom: 48px;
}

.tool-index-group {
  width: min(1080px, 100%);
  margin: 42px auto 0;
  padding-top: 30px;
  border-top: 1px solid var(--tool-line);
}

.tool-index-group h2 {
  color: var(--tool-ink);
  font: 700 1.55rem "Outfit", sans-serif;
}

.tool-index-group > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.tool-index-group a {
  display: grid;
  gap: 7px;
  padding: 16px;
  border: 1px solid var(--tool-line);
  border-radius: 14px;
  background: rgba(255,255,255,.035);
  transition: border-color 180ms ease, transform 180ms ease;
}

.tool-index-group a:hover {
  border-color: var(--tool-orange);
  transform: translateY(-2px);
}

.tool-index-group strong {
  color: var(--tool-ink);
  font: 700 1rem "Outfit", sans-serif;
}

.tool-index-group small {
  color: var(--tool-muted);
  line-height: 1.4;
}

@media (max-width: 760px) {
  .tool-page { padding: 108px 17px 55px; }
  .tool-calculator, .tool-section { grid-template-columns: 1fr; }
  .tool-calculator { gap: 8px; }
  .tool-result { min-height: 235px; }
  .tool-diagram { grid-template-columns: 1fr; }
  .diagram-line { width: 1px; height: 18px; margin: auto; }
  .tool-facts { grid-template-columns: 1fr; }
  .factor-visual { grid-template-columns: 1fr; }
  .scenario-track { grid-template-columns: 1fr 1fr; }
  .scenario-output { align-items: flex-start; flex-direction: column; }
  .faq-visual { grid-template-columns: 1fr; }
  .tool-index-group > div { grid-template-columns: 1fr; }
  .tool-home-link { display: none; }
}