:root {
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-soft: #eef3ef;
  --surface-strong: #172321;
  --text: #18211f;
  --muted: #596964;
  --line: #d8dfda;
  --accent: #2f6b57;
  --accent-dark: #214d3f;
  --accent-soft: #dfeae4;
  --gold: #8a6f2a;
  --warning: #8a4f22;
  --shadow: 0 18px 42px rgba(24, 33, 31, .08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 248, 245, .95);
  backdrop-filter: blur(12px);
}

.nav-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
}

.brand {
  color: var(--accent-dark);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-links a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 13px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links .active {
  border-color: var(--line);
  background: var(--surface);
  outline: none;
}

.nav-links .nav-cta {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.hero {
  padding: 76px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 36px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  margin: 0 0 14px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.25;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 21px;
}

.trust-line,
.hint,
.copy-note {
  color: var(--muted);
  font-size: 15px;
}

.hero-panel,
.card,
.cta-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 24px;
}

.hero-panel {
  padding: 28px;
}

.proof-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.proof-list li {
  position: relative;
  margin: 0;
  padding: 11px 0 11px 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.proof-list li:first-child {
  border-top: 0;
}

.proof-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 19px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent-dark);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.primary {
  background: var(--accent);
  color: #fff;
}

.secondary {
  background: var(--surface);
  color: var(--accent-dark);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: 2px solid rgba(47, 107, 87, .24);
  outline-offset: 2px;
}

section {
  padding: 58px 0;
}

.band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.dark-band {
  background: var(--surface-strong);
  color: #fff;
}

.dark-band .text-block p {
  color: rgba(255, 255, 255, .78);
}

.section-title {
  max-width: 820px;
  margin: 0 auto 30px;
  text-align: center;
}

.section-title p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.calculator-grid {
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(360px, 1.04fr);
  gap: 22px;
  align-items: start;
}

fieldset {
  min-width: 0;
  margin: 0 0 22px;
  padding: 0;
  border: 0;
}

legend,
.mode-info,
.control label {
  display: block;
  margin-bottom: 10px;
  color: var(--text);
  font-weight: 800;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.segmented label,
.quick-buttons button {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--accent-dark);
  cursor: pointer;
  font-weight: 800;
  text-align: center;
}

.segmented input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented label:has(input:checked),
.quick-buttons button.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.segmented.small {
  grid-template-columns: 1fr;
}

.quick-buttons {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 22px;
}

.quick-buttons button {
  min-height: 40px;
  padding: 8px;
  font: inherit;
  font-size: 14px;
}

.control {
  margin-bottom: 22px;
}

.planning-block,
.result-subgroup {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid rgba(47, 107, 87, .28);
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff 0%, #f3f7f4 100%);
}

.planning-block .control {
  margin-bottom: 0;
}

.group-title {
  margin: 0 0 6px;
  color: var(--accent-dark);
  font-size: 16px;
  font-weight: 800;
}

.group-copy {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 130px;
  gap: 12px;
  align-items: center;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.number-input {
  width: 100%;
  min-height: 44px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-weight: 700;
}

.hint,
.info {
  margin: 8px 0 0;
}

.info,
.warning {
  padding: 12px;
  border: 1px solid rgba(138, 111, 42, .35);
  border-radius: 8px;
  background: #fbf7ea;
  color: var(--warning);
}

.hidden {
  display: none;
}

.result-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.result-head h2 {
  margin-bottom: 0;
}

.copy-button {
  flex: 0 0 auto;
}

.result-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 22px 0 0;
}

.result-list.compact {
  margin-top: 10px;
}

.result-item,
.scenario-item,
.future-metric {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.result-item dt,
.scenario-item span:first-child,
.future-metric span:first-child {
  color: var(--muted);
}

.result-item dd {
  margin: 0;
  font-weight: 800;
  text-align: right;
}

.result-item.emphasis {
  border-top-color: rgba(47, 107, 87, .22);
}

.result-item.emphasis:first-child {
  border-top: 0;
}

.result-item.emphasis dd {
  color: var(--accent-dark);
}

.grid-2,
.chart-grid {
  display: grid;
  gap: 18px;
}

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

.scenario-list {
  margin-top: 14px;
}

.lever {
  margin: 18px 0 0;
  color: var(--accent-dark);
  font-size: 26px;
  font-weight: 800;
}

.future-card {
  min-height: 100%;
}

.future-card p {
  color: var(--muted);
}

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

.chart-card {
  min-height: 360px;
}

.chart-card.wide {
  grid-column: 1 / -1;
}

canvas {
  width: 100% !important;
  max-height: 280px;
}

.text-block {
  max-width: 880px;
  margin: 0 auto;
  font-size: 18px;
}

.text-block p {
  margin-bottom: 16px;
}

.keyword-line {
  color: #fff;
  font-weight: 800;
}

.cta-panel {
  max-width: 920px;
  margin: 0 auto;
}

.cta-panel p,
.card p {
  color: var(--muted);
}

.legal {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.legal p {
  max-width: 920px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 15px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

footer p {
  margin: 0 auto 4px;
  max-width: 880px;
}

footer a {
  color: var(--accent-dark);
  font-weight: 800;
  text-decoration: none;
}

footer a:hover,
footer a:focus-visible {
  text-decoration: underline;
  outline: none;
}

@media (max-width: 980px) {
  .hero-grid,
  .calculator-grid,
  .grid-2,
  .chart-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 52px;
  }

  .hero-panel {
    order: -1;
  }
}

@media (max-width: 720px) {
  .nav-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .brand {
    text-align: center;
  }

  .nav-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  section {
    padding: 44px 0;
  }

  .lead {
    font-size: 19px;
  }

  .card,
  .cta-panel,
  .hero-panel {
    padding: 20px;
  }

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

  .result-head {
    display: block;
  }

  .copy-button {
    width: 100%;
    margin-top: 16px;
  }
}

@media (max-width: 520px) {
  .wrap {
    width: min(100% - 24px, 1120px);
  }

  .nav-links,
  .actions,
  .segmented,
  .range-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button,
  .nav-links a {
    width: 100%;
  }

  h1 {
    font-size: 36px;
  }

  .result-item,
  .scenario-item,
  .future-metric {
    display: block;
  }

  .result-item dd {
    margin-top: 4px;
    text-align: left;
  }
}