:root {
  --green-950: #071f3d;
  --green-900: #0b2f55;
  --green-700: #135f9b;
  --green-100: #eaf3fb;
  --yellow: #f4c900;
  --text: #10263d;
  --muted: #65778a;
  --line: #d8e3ed;
  --surface: #ffffff;
  --background: #f4f7fb;
  --danger: #b42318;
  --shadow: 0 24px 60px rgba(7, 31, 61, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 85% 10%, rgba(244,201,0,.20), transparent 25%),
    linear-gradient(180deg, #edf4fb 0%, var(--background) 55%, #fff 100%);
}

button, input { font: inherit; }

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 72px 0;
}

.hero {
  max-width: 790px;
  margin-bottom: 34px;
}

.eyebrow {
  color: var(--green-700);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

h1 {
  max-width: 780px;
  margin: 10px 0 16px;
  font-size: clamp(38px, 6vw, 66px);
  line-height: 1.02;
  letter-spacing: -.045em;
}

.hero p {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  color: var(--green-900);
  font-weight: 700;
  font-size: 14px;
}

.calculator-card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(7,81,61,.08);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.progress-wrap {
  padding: 22px 28px 0;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.progress-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7efec;
}

.progress-bar {
  width: 20%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green-900) 0%, var(--green-700) 72%, var(--yellow) 100%);
  transition: width .3s ease;
}

form { padding: 44px 52px 36px; }

.step { display: none; }
.step.active { display: block; animation: fade .25s ease; }

@keyframes fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

h2 {
  margin: 0 0 8px;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -.03em;
}

.step-copy {
  margin: 0 0 30px;
  color: var(--muted);
  line-height: 1.6;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

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

.choice-card {
  position: relative;
  min-height: 155px;
  padding: 22px;
  border: 1.5px solid var(--line);
  border-radius: 16px;
  cursor: pointer;
  transition: .2s ease;
}

.choice-card:hover {
  transform: translateY(-2px);
  border-color: var(--green-700);
}

.choice-card:has(input:checked) {
  border-color: var(--green-700);
  background: var(--green-100);
  box-shadow: 0 0 0 3px rgba(8,120,90,.1);
}

.choice-card input {
  position: absolute;
  opacity: 0;
}

.choice-card strong,
.choice-card small {
  display: block;
}

.choice-card strong {
  margin-bottom: 9px;
  font-size: 18px;
}

.choice-card small {
  color: var(--muted);
  line-height: 1.5;
}

.choice-icon {
  display: block;
  margin-bottom: 18px;
  color: var(--green-700);
  font-size: 30px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.form-grid.compact { margin-top: 20px; }

label {
  color: #20364c;
  font-size: 14px;
  font-weight: 700;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="tel"] {
  width: 100%;
  margin-top: 9px;
  padding: 15px 16px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  outline: none;
  background: #fff;
  transition: .2s ease;
}

input:focus {
  border-color: var(--green-700);
  box-shadow: 0 0 0 4px rgba(8,120,90,.1);
}

.input-unit { position: relative; }

.input-unit input { padding-right: 82px; }

.input-unit span {
  position: absolute;
  top: 50%;
  right: 14px;
  transform: translateY(-21%);
  color: var(--muted);
  font-size: 13px;
}

.error {
  display: block;
  min-height: 18px;
  margin-top: 5px;
  color: var(--danger);
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
}

.info-box, .disclaimer {
  margin-top: 24px;
  padding: 16px 18px;
  border-radius: 12px;
  color: #435a70;
  background: #f1f6fb;
  font-size: 13px;
  line-height: 1.55;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.metric-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.metric-card span,
.metric-card small {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.metric-card strong {
  display: block;
  margin: 10px 0 4px;
  font-size: 29px;
  letter-spacing: -.03em;
}

.metric-card.highlight {
  color: white;
  background: linear-gradient(145deg, var(--green-950), var(--green-900));
  border-color: var(--green-900);
}

.metric-card.highlight span,
.metric-card.highlight small { color: rgba(255,255,255,.76); }

.strategy-card {
  display: grid;
  grid-template-columns: 1.6fr .9fr;
  gap: 28px;
  margin-top: 18px;
  padding: 26px;
  border-radius: 18px;
  background: #f3f7fb;
}

.strategy-label {
  color: var(--green-700);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.strategy-card h3 {
  margin: 8px 0;
  font-size: 25px;
}

.strategy-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.allocation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: center;
  gap: 10px;
}

.allocation div {
  padding: 18px 10px;
  text-align: center;
  border-radius: 12px;
  background: white;
  border: 1px solid var(--line);
}

.allocation span,
.allocation strong { display: block; }

.allocation span {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 12px;
}

.allocation strong { font-size: 22px; }

.lead-box {
  margin-top: 20px;
  padding: 28px;
  border: 1px solid rgba(244,201,0,.75);
  border-radius: 18px;
  background: linear-gradient(135deg, #fff9d9, #ffffff);
}

.lead-box h3 {
  margin: 7px 0 5px;
  font-size: 24px;
}

.lead-box p { color: var(--muted); }

.privacy-check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 20px 0;
  line-height: 1.45;
}

.privacy-check input { margin-top: 3px; }

.lead-feedback {
  min-height: 20px;
  margin: 12px 0 0;
  color: var(--green-700) !important;
  font-weight: 700;
}

.navigation {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

button {
  padding: 14px 22px;
  border-radius: 12px;
  border: 0;
  cursor: pointer;
  font-weight: 800;
}

button:disabled {
  cursor: not-allowed;
  opacity: .45;
}

.primary {
  color: var(--green-950);
  background: var(--yellow);
  box-shadow: 0 8px 22px rgba(244, 201, 0, .22);
}

.primary:hover { background: #ffd91f; }

.secondary {
  color: var(--green-900);
  background: var(--green-100);
  border: 1px solid #bfd3e6;
}

.full { width: 100%; }

@media (max-width: 820px) {
  .option-grid,
  .option-grid.two,
  .result-grid,
  .strategy-card,
  .form-grid {
    grid-template-columns: 1fr;
  }

  form { padding: 34px 22px 26px; }
  .progress-wrap { padding-inline: 22px; }
  .page-shell { padding: 42px 0; }
  .choice-card { min-height: auto; }
}


.calculator-card::before {
  content: "";
  display: block;
  height: 7px;
  background: linear-gradient(90deg, var(--green-950) 0%, var(--green-700) 72%, var(--yellow) 72%, var(--yellow) 100%);
}

.choice-card:has(input:checked)::after {
  content: "✓";
  position: absolute;
  top: 14px;
  right: 14px;
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--green-950);
  background: var(--yellow);
  font-size: 13px;
  font-weight: 900;
}

.lead-box .eyebrow { color: var(--green-900); }

@media (max-width: 1080px) and (min-width: 821px) {
  .result-grid { grid-template-columns: repeat(2, 1fr); }
}


.comparison-bars {
  margin-top: 18px;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
}

.comparison-row + .comparison-row { margin-top: 20px; }

.comparison-label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 13px;
}

.comparison-label strong { color: var(--text); }

.comparison-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7eef5;
}

.comparison-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  transition: width .7s cubic-bezier(.2,.8,.2,1);
}

.comparison-fill.current {
  background: linear-gradient(90deg, var(--green-950), var(--green-700));
}

.comparison-fill.strategy {
  background: linear-gradient(90deg, #e5b900, var(--yellow));
}

.choice-card:has(input[value="gas"]:checked) strong,
.choice-card:has(input[value="gas"]:checked) small,
.choice-card:has(input[value="gas"]:checked) .choice-icon {
  color: #ffffff;
}

.choice-card:has(input[value="gas"]:checked) {
  background: linear-gradient(145deg, var(--green-950), var(--green-900));
  border-color: var(--green-900);
}

@media (prefers-reduced-motion: no-preference) {
  .calculator-card { animation: rise-in .55s ease both; }
  @keyframes rise-in {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

.honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.privacy-check a {
  color: var(--green-700);
  text-decoration: underline;
}

.lead-box.success-state {
  text-align: center;
  padding: 42px 28px;
  background: linear-gradient(135deg, #eef6fd, #fff9d9);
}

.success-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--green-950);
  font-size: 28px;
  font-weight: 900;
}

.success-state h3 {
  margin: 0 0 10px;
  font-size: 28px;
}

.success-state p {
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.65;
}