:root {
  --formula-black: #050505;
  --formula-ink: #111111;
  --formula-yellow: #fffc00;
  --formula-yellow-soft: #fffbd1;
  --formula-paper: #f5f5f2;
  --formula-white: #ffffff;
  --formula-muted: #656565;
  --formula-line: rgba(17, 17, 17, 0.14);
  --formula-radius: 26px;
  --formula-shadow: 0 24px 70px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.formula-public-body {
  background: var(--formula-white);
  color: var(--formula-ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  overflow-x: hidden;
}

.formula-public-body a {
  color: inherit;
}

.formula-public-container {
  margin: 0 auto;
  max-width: 1240px;
  padding-left: 28px;
  padding-right: 28px;
  width: 100%;
}

.formula-skip-link {
  background: var(--formula-yellow);
  left: 16px;
  padding: 10px 16px;
  position: fixed;
  top: -80px;
  z-index: 1000;
}

.formula-skip-link:focus {
  top: 16px;
}

.formula-public-nav {
  background: var(--formula-black);
  color: var(--formula-white);
  position: relative;
  z-index: 20;
}

.formula-nav-inner {
  align-items: center;
  display: flex;
  gap: 36px;
  min-height: 86px;
}

.formula-public-brand {
  align-items: center;
  display: inline-flex;
  flex: 0 0 auto;
}

.formula-public-brand img {
  display: block;
  height: auto;
  max-width: 132px;
}

.formula-nav-links {
  align-items: center;
  display: flex;
  gap: 32px;
}

.formula-nav-links a,
.formula-nav-login {
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: color 160ms ease;
}

.formula-nav-links a:hover,
.formula-nav-links a:focus,
.formula-nav-login:hover,
.formula-nav-login:focus {
  color: var(--formula-yellow);
}

.formula-nav-actions {
  align-items: center;
  display: flex;
  gap: 22px;
  margin-left: auto;
}

.formula-yellow-button {
  align-items: center;
  background: var(--formula-yellow);
  border: 2px solid var(--formula-yellow);
  border-radius: 999px;
  color: var(--formula-black) !important;
  display: inline-flex;
  font-size: 14px;
  font-weight: 800;
  gap: 12px;
  justify-content: center;
  min-height: 52px;
  padding: 0 26px;
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.formula-yellow-button:hover,
.formula-yellow-button:focus {
  background: var(--formula-white);
  border-color: var(--formula-white);
  color: var(--formula-black);
  text-decoration: none;
  transform: translateY(-2px);
}

.formula-catalog-hero,
.formula-detail-hero {
  background: var(--formula-black);
  color: var(--formula-white);
  overflow: hidden;
  position: relative;
}

.formula-catalog-hero::after,
.formula-detail-hero::after {
  background: radial-gradient(circle, rgba(255, 252, 0, 0.17), transparent 68%);
  content: "";
  height: 640px;
  pointer-events: none;
  position: absolute;
  right: -280px;
  top: -280px;
  width: 640px;
}

.formula-catalog-hero-grid {
  align-items: center;
  display: grid;
  gap: 70px;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  min-height: 610px;
  padding-bottom: 78px;
  padding-top: 66px;
  position: relative;
  z-index: 1;
}

.formula-catalog-copy h1,
.formula-detail-hero h1,
.formula-how-title h2,
.formula-faq-grid h2 {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 800;
  letter-spacing: -0.055em;
  margin: 0;
}

.formula-catalog-copy h1 {
  font-size: clamp(38px, 4.5vw, 60px);
  line-height: 1.02;
  max-width: 760px;
}

.formula-catalog-copy h1 em {
  color: var(--formula-yellow);
  font-style: normal;
}

.formula-catalog-copy > p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
  line-height: 1.65;
  margin: 32px 0;
  max-width: 640px;
}

.formula-visual-stack {
  height: 500px;
  position: relative;
}

.formula-visual-card {
  border-radius: 26px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  position: absolute;
}

.formula-visual-card span {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.formula-visual-card strong {
  font-size: 42px;
  letter-spacing: -0.06em;
  line-height: 1;
}

.formula-visual-card small {
  font-size: 13px;
  font-weight: 600;
}

.formula-visual-card-main {
  background: #242424;
  border: 1px solid rgba(255, 255, 255, 0.14);
  height: 370px;
  left: 0;
  padding: 34px;
  top: 60px;
  transform: rotate(-4deg);
  width: 310px;
  z-index: 2;
}

.formula-visual-card-main strong {
  margin-top: 16px;
}

.formula-visual-card-main small {
  color: rgba(255, 255, 255, 0.68);
  margin-top: auto;
}

.formula-visual-card-main small b {
  color: var(--formula-yellow);
}

.formula-mini-chart {
  align-items: end;
  display: flex;
  gap: 9px;
  height: 150px;
  margin-top: 28px;
}

.formula-mini-chart i {
  background: var(--formula-yellow);
  border-radius: 8px 8px 2px 2px;
  display: block;
  flex: 1;
}

.formula-mini-chart i:nth-child(1) { height: 28%; }
.formula-mini-chart i:nth-child(2) { height: 48%; }
.formula-mini-chart i:nth-child(3) { height: 39%; }
.formula-mini-chart i:nth-child(4) { height: 67%; }
.formula-mini-chart i:nth-child(5) { height: 76%; }
.formula-mini-chart i:nth-child(6) { height: 100%; }

.formula-visual-card-yellow {
  background: var(--formula-yellow);
  color: var(--formula-black);
  height: 205px;
  padding: 28px;
  right: 4px;
  top: 0;
  transform: rotate(4deg);
  width: 230px;
  z-index: 3;
}

.formula-visual-card-yellow strong,
.formula-visual-card-white strong {
  margin-top: auto;
}

.formula-visual-card-white {
  background: var(--formula-white);
  color: var(--formula-black);
  height: 230px;
  padding: 28px;
  right: 8px;
  top: 230px;
  transform: rotate(3deg);
  width: 245px;
  z-index: 1;
}

.formula-visual-card-white small {
  color: var(--formula-muted);
  margin-top: 6px;
}

.formula-proof-strip {
  background: var(--formula-yellow);
}

.formula-proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.formula-proof-grid > div {
  border-left: 1px solid rgba(0, 0, 0, 0.18);
  padding: 30px 24px;
}

.formula-proof-grid > div:last-child {
  border-right: 1px solid rgba(0, 0, 0, 0.18);
}

.formula-proof-grid strong,
.formula-proof-grid span {
  display: block;
}

.formula-proof-grid strong {
  font-size: 34px;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.formula-proof-grid span {
  font-size: 12px;
  font-weight: 700;
  margin-top: 4px;
}

.formula-catalog-section,
.formula-explanation-section,
.formula-related-section {
  padding: 110px 0;
}

.formula-catalog-section,
.formula-related-section {
  background: var(--formula-paper);
}

.formula-section-heading {
  margin-bottom: 48px;
  max-width: 760px;
}

.formula-section-heading h2 {
  font-size: clamp(30px, 3.5vw, 44px);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 1;
  margin: 0;
}

.formula-section-heading p {
  color: var(--formula-muted);
  font-size: 17px;
  line-height: 1.6;
  margin: 22px 0 0;
}

.formula-section-heading-narrow {
  max-width: 850px;
}

.formula-public-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.formula-public-card {
  min-height: 335px;
}

.formula-public-card > a {
  background: var(--formula-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 22px;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 28px;
  text-decoration: none;
  transition: box-shadow 180ms ease, transform 180ms ease;
}

.formula-public-card > a:hover,
.formula-public-card > a:focus {
  box-shadow: var(--formula-shadow);
  outline: none;
  transform: translateY(-6px);
}

.formula-card-topline {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.formula-card-icon {
  align-items: center;
  background: var(--formula-yellow);
  border-radius: 14px;
  display: inline-flex;
  font-size: 25px;
  font-weight: 900;
  height: 54px;
  justify-content: center;
  width: 54px;
}

.formula-card-category {
  color: var(--formula-muted);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-align: right;
  text-transform: uppercase;
}

.formula-public-card h3 {
  font-size: 23px;
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 34px 0 14px;
}

.formula-public-card p {
  color: var(--formula-muted);
  font-size: 14px;
  line-height: 1.55;
  margin: 0;
}

.formula-card-link {
  align-items: center;
  display: flex;
  font-size: 13px;
  font-weight: 800;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 26px;
}

.formula-card-link i {
  align-items: center;
  background: var(--formula-black);
  border-radius: 50%;
  color: var(--formula-white);
  display: inline-flex;
  font-style: normal;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.formula-how-section,
.formula-faq-section {
  background: var(--formula-black);
  color: var(--formula-white);
  padding: 110px 0;
}

.formula-how-grid,
.formula-faq-grid {
  display: grid;
  gap: 90px;
  grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.2fr);
}

.formula-how-title h2,
.formula-faq-grid h2 {
  font-size: clamp(32px, 3.8vw, 48px);
  line-height: 1;
}

.formula-how-steps > div {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  display: grid;
  gap: 24px;
  grid-template-columns: 52px 190px 1fr;
  padding: 30px 0;
}

.formula-how-steps b {
  color: var(--formula-yellow);
  font-size: 12px;
}

.formula-how-steps h3 {
  font-size: 19px;
  margin: 0;
}

.formula-how-steps p {
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.formula-detail-hero {
  padding: 34px 0 92px;
}

.formula-breadcrumb {
  align-items: center;
  color: rgba(255, 255, 255, 0.54);
  display: flex;
  font-size: 12px;
  gap: 10px;
  margin-bottom: 74px;
}

.formula-breadcrumb a {
  color: var(--formula-white);
  text-decoration: none;
}

.formula-detail-hero-grid {
  align-items: end;
  display: grid;
  gap: 70px;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  position: relative;
  z-index: 1;
}

.formula-detail-hero h1 {
  font-size: clamp(36px, 4.3vw, 58px);
  line-height: 0.98;
  max-width: 760px;
}

.formula-detail-hero-grid > div:first-child > p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 17px;
  line-height: 1.65;
  margin: 28px 0;
  max-width: 700px;
}

.formula-equation-hero {
  background: var(--formula-yellow);
  border-radius: var(--formula-radius);
  color: var(--formula-black);
  display: flex;
  flex-direction: column;
  min-height: 310px;
  padding: 34px;
  transform: rotate(2deg);
}

.formula-equation-hero span,
.formula-equation-box small {
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.formula-equation-hero strong {
  font-size: clamp(28px, 3vw, 42px);
  letter-spacing: -0.045em;
  line-height: 1.05;
  margin: auto 0;
}

.formula-equation-hero small {
  font-size: 12px;
  font-weight: 600;
}

.formula-calculator-zone {
  background: var(--formula-yellow);
  padding: 90px 0;
}

.formula-calculator-grid {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.15fr) minmax(350px, 0.85fr);
}

.formula-input-panel,
.formula-output-panel {
  background: var(--formula-white);
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: var(--formula-radius);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.1);
  padding: 34px;
}

.formula-output-panel {
  position: sticky;
  top: 24px;
}

.formula-output-panel.has-result {
  background: var(--formula-black);
  color: var(--formula-white);
}

.formula-panel-heading {
  align-items: center;
  display: flex;
  gap: 16px;
  margin-bottom: 30px;
}

.formula-panel-heading > span {
  align-items: center;
  background: var(--formula-black);
  border-radius: 50%;
  color: var(--formula-yellow);
  display: inline-flex;
  flex: 0 0 46px;
  font-size: 12px;
  font-weight: 900;
  height: 46px;
  justify-content: center;
}

.formula-panel-heading h2 {
  font-size: 25px;
  font-weight: 900;
  letter-spacing: -0.04em;
  margin: 0;
}

.formula-panel-heading p {
  color: var(--formula-muted);
  font-size: 12px;
  margin: 5px 0 0;
}

.has-result .formula-panel-heading > span {
  background: var(--formula-yellow);
  color: var(--formula-black);
}

.has-result .formula-panel-heading p {
  color: rgba(255, 255, 255, 0.58);
}

.formula-fields-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.formula-field {
  display: block;
  margin: 0;
}

.formula-field-label {
  display: block;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 9px;
}

.formula-field-control {
  align-items: center;
  background: var(--formula-paper);
  border: 2px solid transparent;
  border-radius: 14px;
  display: flex;
  min-height: 58px;
  transition: background 160ms ease, border-color 160ms ease;
}

.formula-field-control:focus-within {
  background: var(--formula-white);
  border-color: var(--formula-black);
}

.formula-public-input {
  appearance: textfield;
  background: transparent;
  border: 0;
  color: var(--formula-ink);
  font: inherit;
  font-size: 16px;
  font-weight: 700;
  min-width: 0;
  outline: 0;
  padding: 16px;
  width: 100%;
}

.formula-public-input::-webkit-inner-spin-button,
.formula-public-input::-webkit-outer-spin-button {
  appearance: none;
  margin: 0;
}

.formula-field-control b {
  border-left: 1px solid var(--formula-line);
  color: var(--formula-muted);
  flex: 0 0 auto;
  font-size: 12px;
  padding: 8px 14px;
}

.formula-field > small {
  color: #8a8a8a;
  display: block;
  font-size: 10px;
  line-height: 1.4;
  margin-top: 6px;
}

.formula-calculate-button {
  align-items: center;
  background: var(--formula-black);
  border: 2px solid var(--formula-black);
  border-radius: 999px;
  color: var(--formula-white);
  cursor: pointer;
  display: flex;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  justify-content: space-between;
  margin-top: 30px;
  min-height: 58px;
  padding: 0 24px;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
  width: 100%;
}

.formula-calculate-button:hover,
.formula-calculate-button:focus {
  background: var(--formula-yellow);
  color: var(--formula-black);
  outline: none;
  transform: translateY(-2px);
}

.formula-calculate-button span {
  font-size: 20px;
}

.formula-form-note {
  color: var(--formula-muted);
  font-size: 11px;
  line-height: 1.5;
  margin: 16px 0 0;
  text-align: center;
}

.formula-form-note i {
  color: #0f9d58;
  font-style: normal;
}

.formula-public-errors {
  background: #fff0f0;
  border: 1px solid #eeb5b5;
  border-radius: 14px;
  color: #871e1e;
  font-size: 12px;
  margin-bottom: 24px;
  padding: 16px 18px;
}

.formula-public-errors ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

.formula-result-empty {
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 310px;
  text-align: center;
}

.formula-result-empty > div {
  align-items: center;
  background: var(--formula-yellow);
  border-radius: 50%;
  display: flex;
  font-size: 30px;
  height: 76px;
  justify-content: center;
  margin-bottom: 20px;
  width: 76px;
}

.formula-result-empty h3 {
  font-size: 20px;
  margin: 0 0 8px;
}

.formula-result-empty p {
  color: var(--formula-muted);
  font-size: 13px;
  margin: 0;
}

.formula-result-primary {
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  padding: 22px 0 28px;
}

.formula-result-primary span,
.formula-result-details span {
  color: rgba(255, 255, 255, 0.58);
  display: block;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.formula-result-primary strong {
  color: var(--formula-yellow);
  display: block;
  font-size: clamp(34px, 4vw, 55px);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1;
  margin-top: 12px;
  overflow-wrap: anywhere;
}

.formula-result-details {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 20px 0;
}

.formula-result-details > div {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 14px;
}

.formula-result-details strong {
  display: block;
  font-size: 15px;
  margin-top: 7px;
}

.formula-result-reading {
  background: var(--formula-yellow);
  border-radius: 14px;
  color: var(--formula-black);
  font-size: 12px;
  line-height: 1.6;
  margin: 4px 0 18px;
  padding: 16px;
}

.formula-recalculate-link {
  color: rgba(255, 255, 255, 0.7) !important;
  display: inline-flex;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.formula-editorial-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1.2fr 0.8fr;
}

.formula-editorial-main,
.formula-editorial-card {
  border-radius: var(--formula-radius);
  padding: 38px;
}

.formula-editorial-main {
  background: var(--formula-paper);
  grid-row: span 2;
  min-height: 560px;
}

.formula-editorial-card {
  min-height: 270px;
}

.formula-editorial-yellow {
  background: var(--formula-yellow);
}

.formula-editorial-dark {
  background: var(--formula-black);
  color: var(--formula-white);
}

.formula-editorial-number {
  font-size: 11px;
  font-weight: 900;
}

.formula-editorial-grid h3 {
  font-size: 31px;
  font-weight: 900;
  letter-spacing: -0.045em;
  margin: 44px 0 18px;
}

.formula-editorial-grid p,
.formula-editorial-grid li {
  font-size: 15px;
  line-height: 1.75;
}

.formula-editorial-grid p {
  color: var(--formula-muted);
}

.formula-editorial-yellow p {
  color: var(--formula-black);
}

.formula-editorial-dark ul {
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  padding-left: 20px;
}

.formula-equation-box {
  background: var(--formula-white);
  border: 1px solid var(--formula-line);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 50px;
  padding: 28px;
}

.formula-equation-box strong {
  font-size: clamp(24px, 3.2vw, 43px);
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.formula-faq-list details {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  padding: 24px 0;
}

.formula-faq-list summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  font-size: 17px;
  font-weight: 800;
  justify-content: space-between;
  list-style: none;
}

.formula-faq-list summary::-webkit-details-marker {
  display: none;
}

.formula-faq-list summary span {
  color: var(--formula-yellow);
  font-size: 22px;
}

.formula-faq-list details[open] summary span {
  transform: rotate(45deg);
}

.formula-faq-list p {
  color: rgba(255, 255, 255, 0.64);
  font-size: 14px;
  line-height: 1.7;
  margin: 16px 50px 0 0;
}

.formula-related-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.formula-related-grid a {
  background: var(--formula-white);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: 26px;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.formula-related-grid a:hover,
.formula-related-grid a:focus {
  background: var(--formula-yellow);
  color: var(--formula-black);
  transform: translateY(-5px);
}

.formula-related-grid span {
  color: var(--formula-muted);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.formula-related-grid h3 {
  font-size: 22px;
  letter-spacing: -0.035em;
  line-height: 1.12;
  margin: 20px 0;
}

.formula-related-grid i {
  font-size: 25px;
  font-style: normal;
  margin-top: auto;
}

.formula-public-footer {
  background: var(--formula-black);
  color: var(--formula-white);
  padding: 80px 0 34px;
}

.formula-footer-cta {
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  display: flex;
  gap: 40px;
  justify-content: space-between;
  padding-bottom: 70px;
}

.formula-footer-cta span {
  color: var(--formula-yellow);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.formula-footer-cta h2 {
  font-size: clamp(32px, 4vw, 54px);
  letter-spacing: -0.05em;
  line-height: 1;
  margin: 12px 0 0;
  max-width: 760px;
}

.formula-footer-bottom {
  align-items: center;
  color: rgba(255, 255, 255, 0.55);
  display: grid;
  font-size: 11px;
  gap: 30px;
  grid-template-columns: auto 1fr auto;
  padding-top: 30px;
}

.formula-footer-bottom p {
  margin: 0;
  text-align: center;
}

.formula-footer-bottom > div {
  display: flex;
  gap: 18px;
}

.formula-footer-bottom a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

@media (max-width: 1050px) {
  .formula-catalog-hero-grid,
  .formula-detail-hero-grid {
    gap: 40px;
    grid-template-columns: 1fr 0.85fr;
  }

  .formula-public-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .formula-visual-card-main {
    width: 270px;
  }

  .formula-visual-card-yellow,
  .formula-visual-card-white {
    right: -15px;
    width: 205px;
  }

  .formula-nav-links {
    display: none;
  }
}

@media (max-width: 820px) {
  .formula-public-container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .formula-catalog-hero-grid,
  .formula-detail-hero-grid,
  .formula-calculator-grid,
  .formula-how-grid,
  .formula-faq-grid,
  .formula-editorial-grid {
    grid-template-columns: 1fr;
  }

  .formula-catalog-hero-grid {
    padding-top: 50px;
  }

  .formula-visual-stack {
    margin: 0 auto;
    max-width: 540px;
    width: 100%;
  }

  .formula-detail-hero-grid {
    align-items: stretch;
  }

  .formula-equation-hero {
    min-height: 240px;
    transform: none;
  }

  .formula-output-panel {
    position: static;
  }

  .formula-editorial-main {
    grid-row: auto;
    min-height: auto;
  }

  .formula-how-grid,
  .formula-faq-grid {
    gap: 50px;
  }

  .formula-related-grid {
    grid-template-columns: 1fr;
  }

  .formula-related-grid a {
    min-height: 180px;
  }
}

@media (max-width: 620px) {
  .formula-public-brand img {
    max-width: 104px;
  }

  .formula-nav-inner {
    gap: 14px;
    min-height: 72px;
  }

  .formula-nav-actions {
    gap: 12px;
  }

  .formula-nav-login {
    font-size: 12px;
  }

  .formula-nav-signup {
    min-height: 42px;
    padding: 0 15px;
  }

  .formula-catalog-copy h1 {
    font-size: 34px;
  }

  .formula-catalog-copy > p {
    font-size: 15px;
  }

  .formula-visual-stack {
    height: 410px;
  }

  .formula-visual-card-main {
    height: 315px;
    left: 0;
    padding: 24px;
    width: 62%;
  }

  .formula-visual-card-yellow,
  .formula-visual-card-white {
    right: 0;
    width: 45%;
  }

  .formula-visual-card-yellow {
    height: 165px;
  }

  .formula-visual-card-white {
    height: 190px;
    top: 190px;
  }

  .formula-visual-card strong {
    font-size: 29px;
  }

  .formula-proof-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .formula-proof-grid > div:nth-child(3) {
    border-top: 1px solid rgba(0, 0, 0, 0.18);
  }

  .formula-proof-grid > div:nth-child(4) {
    border-right: 1px solid rgba(0, 0, 0, 0.18);
    border-top: 1px solid rgba(0, 0, 0, 0.18);
  }

  .formula-catalog-section,
  .formula-explanation-section,
  .formula-related-section,
  .formula-how-section,
  .formula-faq-section,
  .formula-calculator-zone {
    padding: 72px 0;
  }

  .formula-public-grid,
  .formula-fields-grid,
  .formula-result-details {
    grid-template-columns: 1fr;
  }

  .formula-public-card {
    min-height: 305px;
  }

  .formula-detail-hero {
    padding-bottom: 65px;
  }

  .formula-breadcrumb {
    margin-bottom: 52px;
  }

  .formula-detail-hero h1 {
    font-size: 32px;
  }

  .formula-input-panel,
  .formula-output-panel,
  .formula-editorial-main,
  .formula-editorial-card {
    border-radius: 20px;
    padding: 24px;
  }

  .formula-how-steps > div {
    gap: 8px 16px;
    grid-template-columns: 36px 1fr;
  }

  .formula-how-steps p {
    grid-column: 2;
  }

  .formula-footer-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .formula-footer-bottom {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  .formula-footer-bottom p {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}