:root {
  --ink: #0b0d0c;
  --paper: #f0efe8;
  --paper-2: #e4e3dc;
  --lime: #c7ff52;
  --lime-dark: #8fb91d;
  --muted: #6f746f;
  --line: rgba(11, 13, 12, 0.18);
  --dark-line: rgba(240, 239, 232, 0.16);
  --red: #ff6b61;
  --radius: 4px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

.topbar {
  min-height: 74px;
  padding: 0 4.5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.mark {
  width: 38px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  font-size: 0.65rem;
  letter-spacing: 0;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.topbar nav a,
.support-link {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
  cursor: pointer;
}

.support-link {
  padding: 11px 15px;
  background: var(--ink);
  color: var(--paper);
}

.hero {
  min-height: calc(100vh - 74px);
  padding: 72px 4.5vw 82px;
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(580px, 1.2fr);
  align-items: center;
  gap: 6vw;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
}

.hero-copy {
  padding: 28px 0;
}

.eyebrow,
.kicker {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
  font-size: clamp(4.2rem, 7.4vw, 8.5rem);
  font-stretch: condensed;
  font-weight: 900;
  letter-spacing: -0.078em;
  line-height: 0.75;
  text-transform: uppercase;
}

.hero h1 em {
  color: var(--lime-dark);
  font-style: normal;
}

.hero-intro {
  max-width: 570px;
  margin: 42px 0 26px;
  color: #393e39;
  font-size: clamp(1rem, 1.25vw, 1.18rem);
  line-height: 1.65;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 0.72rem;
  font-weight: 700;
}

.hero-points span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-points i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime-dark);
}

.calculator-shell {
  width: 100%;
  max-width: 780px;
  justify-self: end;
  padding: clamp(22px, 3vw, 38px);
  background: var(--ink);
  color: var(--paper);
  box-shadow: 18px 18px 0 rgba(11, 13, 12, 0.11);
}

.calculator-topline {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
}

.calculator-topline h2 {
  margin: 0;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.calculator-shell .kicker {
  color: #858c86;
  margin-bottom: 10px;
}

.share-button {
  border: 1px solid var(--dark-line);
  padding: 10px 12px;
  background: transparent;
  color: var(--paper);
  font-size: 0.7rem;
  font-weight: 700;
  cursor: pointer;
}

.share-button:hover,
.share-button:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.tabs {
  margin: 34px 0 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--dark-line);
}

.tab {
  position: relative;
  border: 0;
  padding: 0 8px 15px;
  background: transparent;
  color: #818781;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  cursor: pointer;
}

.tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
}

.tab.active {
  color: var(--paper);
}

.tab.active::after {
  background: var(--lime);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
}

.input-grid > label:first-child {
  grid-column: span 2;
}

.input-grid label {
  display: grid;
  gap: 7px;
}

.input-grid label > span:first-child {
  color: #a4aaa4;
  font-size: 0.68rem;
  font-weight: 700;
}

.field {
  min-width: 0;
  height: 48px;
  display: flex;
  align-items: center;
  border: 1px solid var(--dark-line);
  background: #131614;
  transition: border-color 160ms ease;
}

.field:focus-within {
  border-color: var(--lime);
}

.field b {
  padding-left: 14px;
  color: #747a75;
  font-size: 0.85rem;
  font-weight: 500;
}

.field.suffix b {
  padding: 0 14px 0 0;
}

.field input {
  width: 100%;
  min-width: 0;
  height: 100%;
  border: 0;
  outline: 0;
  padding: 0 12px;
  background: transparent;
  color: var(--paper);
  font-weight: 700;
  appearance: textfield;
}

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

.quick-targets {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.quick-targets span {
  margin-right: auto;
  color: #707670;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.quick-targets button {
  border: 1px solid var(--dark-line);
  padding: 6px 9px;
  background: transparent;
  color: #b9beb9;
  font-size: 0.68rem;
  cursor: pointer;
}

.quick-targets button:hover,
.quick-targets button:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.result-card {
  margin-top: 24px;
  padding: 24px;
  background: var(--lime);
  color: var(--ink);
}

.result-card.compact {
  margin-top: 22px;
}

.result-primary {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 2px 20px;
}

.result-primary p {
  margin: 0;
  color: rgba(11, 13, 12, 0.65);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-primary strong {
  grid-row: span 2;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.7rem);
  letter-spacing: -0.06em;
  line-height: 0.9;
}

.result-primary span {
  color: rgba(11, 13, 12, 0.74);
  font-size: 0.78rem;
  font-weight: 700;
}

.result-secondary {
  margin-top: 24px;
  padding-top: 17px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  border-top: 1px solid rgba(11, 13, 12, 0.2);
}

.result-secondary p,
.result-secondary strong {
  margin: 0;
}

.result-secondary p {
  color: rgba(11, 13, 12, 0.62);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.result-secondary strong {
  display: block;
  margin-top: 4px;
  font-size: 0.92rem;
}

.meter {
  height: 3px;
  margin-top: 21px;
  background: rgba(11, 13, 12, 0.16);
  overflow: hidden;
}

.meter span {
  display: block;
  width: 50%;
  height: 100%;
  background: var(--ink);
  transition: width 180ms ease, background-color 180ms ease;
}

.result-note {
  margin: 10px 0 0;
  color: rgba(11, 13, 12, 0.68);
  font-size: 0.68rem;
}

.result-card.negative {
  background: #ffb3aa;
}

.dca-head,
.dca-row {
  display: grid;
  grid-template-columns: 52px 1fr 1fr;
  gap: 10px;
  align-items: center;
}

.dca-head {
  margin-bottom: 7px;
  color: #777d77;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.dca-row {
  margin-bottom: 9px;
}

.dca-row > b {
  color: #6f756f;
  font-size: 0.7rem;
}

.dca-options {
  margin-top: 20px;
}

.dca-options > label:first-child {
  grid-column: auto;
}

.calculator-disclaimer {
  margin: 16px 0 0;
  color: #858b85;
  font-size: 0.67rem;
  line-height: 1.55;
}

.ticker {
  min-height: 60px;
  padding: 16px 4.5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  overflow: hidden;
  background: var(--lime);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.ticker i {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--ink);
}

.method,
.faq {
  padding: 110px 4.5vw;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 58px;
}

.section-heading h2,
.formula-section h2,
.api-strip h2,
.support-strip h2 {
  margin: 0;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: clamp(3rem, 6vw, 6.7rem);
  line-height: 0.82;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.method-grid article {
  min-height: 300px;
  padding: 30px;
  border-right: 1px solid var(--line);
}

.method-grid article:first-child {
  padding-left: 0;
}

.method-grid article:last-child {
  border-right: 0;
}

.method-grid article > span {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.65rem;
}

.method-grid h3 {
  margin: 78px 0 14px;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: 1.7rem;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.method-grid p,
.formula-section > div:first-child > p:last-child {
  max-width: 390px;
  margin: 0;
  color: #565c57;
  font-size: 0.9rem;
  line-height: 1.65;
}

.formula-section {
  padding: 100px 4.5vw;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 8vw;
  background: var(--ink);
  color: var(--paper);
}

.formula-section .eyebrow {
  color: #747a75;
}

.formula-section > div:first-child > p:last-child {
  margin-top: 32px;
  color: #939a94;
}

.formula-card {
  border-top: 1px solid var(--dark-line);
}

.formula-card p {
  margin: 0;
  padding: 26px 0;
  display: grid;
  grid-template-columns: 145px 1fr;
  gap: 24px;
  border-bottom: 1px solid var(--dark-line);
}

.formula-card span {
  color: #858b85;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.formula-card code {
  color: var(--lime);
  font-family: "Courier New", monospace;
  font-size: 0.84rem;
}

.faq-grid {
  border-top: 1px solid var(--line);
}

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

.faq summary {
  position: relative;
  padding: 26px 44px 26px 0;
  list-style: none;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  cursor: pointer;
}

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

.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 23px;
  font-size: 1.5rem;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  max-width: 760px;
  margin: -4px 0 28px;
  color: #565c57;
  font-size: 0.9rem;
  line-height: 1.65;
}

.api-strip {
  padding: 76px 4.5vw;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 50px;
  border-top: 1px solid var(--dark-line);
  background: var(--ink);
  color: var(--paper);
}

.api-strip h2 {
  max-width: 970px;
  font-size: clamp(2.8rem, 5.2vw, 5.8rem);
}

.api-strip > div > p:last-child {
  max-width: 680px;
  margin: 28px 0 0;
  color: #939a94;
  font-size: 0.9rem;
  line-height: 1.65;
}

.api-strip > div > p:last-child a {
  color: var(--lime);
}

.api-cta {
  min-width: 230px;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  background: var(--lime);
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 800;
  text-decoration: none;
}

.support-strip {
  padding: 70px 4.5vw;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  background: var(--lime);
}

.support-strip h2 {
  max-width: 900px;
  font-size: clamp(2.8rem, 5.2vw, 5.8rem);
}

.support-strip .eyebrow {
  color: rgba(11, 13, 12, 0.62);
}

.support-cta {
  min-width: 230px;
  border: 0;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  cursor: pointer;
}

footer {
  min-height: 100px;
  padding: 30px 4.5vw;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 30px;
  background: var(--ink);
  color: var(--paper);
}

footer p {
  margin: 0;
  color: #828983;
  font-size: 0.68rem;
}

dialog {
  width: min(620px, calc(100vw - 30px));
  border: 0;
  padding: clamp(28px, 5vw, 54px);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.45);
}

dialog::backdrop {
  background: rgba(3, 4, 3, 0.82);
  backdrop-filter: blur(5px);
}

dialog h2 {
  margin: 0;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

dialog > p:not(.eyebrow, .microcopy) {
  margin: 24px 0;
  color: #4f554f;
  line-height: 1.65;
}

.dialog-close-form {
  position: absolute;
  top: 18px;
  right: 18px;
}

.dialog-close-form button {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-size: 1.4rem;
  cursor: pointer;
}

.address-box {
  margin: 24px 0 18px;
  padding: 18px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  background: var(--ink);
  color: var(--paper);
}

.address-box span {
  grid-column: span 2;
  color: #8a918b;
  font-size: 0.64rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.address-box code {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--lime);
  font-size: 0.75rem;
}

.address-box button {
  border: 1px solid var(--dark-line);
  padding: 8px 10px;
  background: transparent;
  color: var(--paper);
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
}

.verify-link {
  font-size: 0.76rem;
  font-weight: 800;
}

.microcopy {
  margin: 20px 0 0;
  color: #737873;
  font-size: 0.66rem;
  line-height: 1.55;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 20;
  max-width: min(340px, calc(100vw - 44px));
  padding: 12px 16px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--lime-dark);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 850px;
  }

  .calculator-shell {
    max-width: none;
    justify-self: stretch;
  }

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

@media (max-width: 720px) {
  .topbar {
    min-height: 64px;
  }

  .topbar nav a {
    display: none;
  }

  .support-link {
    padding: 9px 11px;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
    gap: 34px;
    background-size: 46px 46px;
  }

  .hero h1 {
    font-size: clamp(3.65rem, 19vw, 6rem);
  }

  .hero-intro {
    margin-top: 30px;
  }

  .calculator-shell {
    box-shadow: 9px 9px 0 rgba(11, 13, 12, 0.11);
  }

  .share-button {
    max-width: 96px;
  }

  .result-primary {
    display: block;
  }

  .result-primary strong {
    display: block;
    margin: 7px 0 4px;
  }

  .result-secondary {
    grid-template-columns: 1fr 1fr;
  }

  .method,
  .faq {
    padding-top: 80px;
    padding-bottom: 80px;
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .method-grid article {
    min-height: auto;
    padding: 28px 0 36px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .method-grid article:last-child {
    border-bottom: 0;
  }

  .method-grid h3 {
    margin-top: 38px;
  }

  .formula-card p {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .support-strip {
    align-items: stretch;
    flex-direction: column;
  }

  .api-strip {
    grid-template-columns: 1fr;
  }

  footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .topbar,
  .hero,
  .method,
  .faq,
  .formula-section,
  .api-strip,
  .support-strip,
  footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .wordmark {
    gap: 8px;
    font-size: 0.72rem;
  }

  .mark {
    width: 34px;
  }

  .calculator-shell {
    padding: 20px 17px;
  }

  .tabs {
    margin-top: 27px;
  }

  .tab {
    font-size: 0.62rem;
  }

  .input-grid {
    grid-template-columns: 1fr;
  }

  .input-grid > label:first-child {
    grid-column: auto;
  }

  .dca-row {
    grid-template-columns: 34px 1fr 1fr;
  }

  .dca-head {
    grid-template-columns: 34px 1fr 1fr;
  }

  .quick-targets span {
    display: none;
  }

  .result-secondary {
    grid-template-columns: 1fr;
  }

  .address-box {
    grid-template-columns: 1fr;
  }

  .address-box span {
    grid-column: auto;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}