:root {
  color-scheme: light;
  --ink: #10221f;
  --muted: #58706a;
  --soft: #edf4ef;
  --surface: #ffffff;
  --surface-2: #f8fbf8;
  --line: #dce8e1;
  --accent: #0f8f68;
  --accent-dark: #0b684e;
  --danger: #b42d2d;
  --success: #16794f;
  --warning-bg: #fff4dd;
  --warning-ink: #6d4300;
  --shadow: 0 28px 80px rgba(16, 34, 31, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max: 1160px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(15, 143, 104, 0.14), transparent 32rem),
    linear-gradient(180deg, #fbfdfb 0%, #f3f8f4 48%, #ffffff 100%);
  color: var(--ink);
}

a { color: inherit; }

.site-header {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -0.03em;
  font-size: 1.14rem;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--ink);
  color: #eafff6;
  font-size: 0.82rem;
  letter-spacing: -0.05em;
}

.top-nav { display: flex; align-items: center; gap: 20px; color: var(--muted); font-size: 0.95rem; }
.top-nav a { text-decoration: none; }
.top-nav a:hover { color: var(--ink); }

.hero, .calculator-section, .explain, .faq {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.72fr);
  gap: 56px;
  align-items: center;
  padding: 58px 0 92px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.13em;
}

h1, h2, h3, p { text-wrap: pretty; }
h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(3.3rem, 8vw, 6.8rem);
  line-height: 0.89;
  letter-spacing: -0.085em;
}
h2 {
  margin: 0;
  font-size: clamp(2.1rem, 4.8vw, 4rem);
  line-height: 0.96;
  letter-spacing: -0.065em;
}
h3 { margin: 0 0 10px; font-size: 1.1rem; letter-spacing: -0.03em; }
.lead {
  max-width: 610px;
  margin: 26px 0 0;
  color: #344d47;
  font-size: clamp(1.12rem, 2vw, 1.42rem);
  line-height: 1.45;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 20px;
  text-decoration: none;
  font-weight: 740;
  border: 1px solid transparent;
}
.button.primary { background: var(--accent); color: #fff; box-shadow: 0 16px 36px rgba(15,143,104,.26); }
.button.primary:hover { background: var(--accent-dark); }
.button.secondary { background: #fff; border-color: var(--line); color: var(--ink); }
.button.secondary:hover { border-color: #b7cfc5; }
.microcopy { margin: 18px 0 0; color: var(--muted); font-size: 0.95rem; }

.truth-card, .calculator-panel, .results-panel, .explain article, .faq details {
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(220,232,225,.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.truth-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  transform: rotate(1.2deg);
}
.card-topline { color: var(--muted); font-weight: 760; font-size: .9rem; }
.big-number { margin-top: 20px; font-size: clamp(3.5rem, 7vw, 5.8rem); font-weight: 850; line-height: .9; letter-spacing: -.08em; }
.negative { color: var(--danger); }
.positive { color: var(--success); }
.card-title { margin: 8px 0 18px; color: var(--muted); }
.warning-strip {
  border-radius: var(--radius-sm);
  background: var(--warning-bg);
  color: var(--warning-ink);
  padding: 14px 16px;
  font-weight: 720;
}
.mini-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 22px 0 0; }
.mini-metrics div { padding: 12px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); }
.mini-metrics dt { color: var(--muted); font-size: .78rem; }
.mini-metrics dd { margin: 4px 0 0; font-weight: 780; }

.calculator-section { padding: 34px 0 92px; }
.section-heading { max-width: 760px; margin-bottom: 28px; }
.section-heading p:not(.eyebrow) { color: var(--muted); font-size: 1.12rem; line-height: 1.55; }
.compact { margin-bottom: 20px; }
.calculator-grid { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 24px; align-items: start; }
.calculator-panel, .results-panel { border-radius: var(--radius-lg); padding: 24px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
label span { display: block; margin: 0 0 8px; color: #35534b; font-size: .92rem; font-weight: 720; }
input {
  width: 100%;
  min-height: 48px;
  border: 1px solid #cbded5;
  border-radius: 13px;
  padding: 0 13px;
  font: inherit;
  font-weight: 680;
  color: var(--ink);
  background: #fff;
}
input:focus { outline: 3px solid rgba(15,143,104,.18); border-color: var(--accent); }
.form-note { margin: 16px 0 0; color: var(--muted); font-size: .93rem; }
.results-panel { position: sticky; top: 18px; }
.result-main { padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.result-label, .result-sub { margin: 0; color: var(--muted); }
.result-value { margin: 8px 0 8px; font-size: clamp(3rem, 5vw, 4.6rem); line-height: .95; font-weight: 850; letter-spacing: -.075em; }
.result-metrics { display: grid; gap: 10px; margin-top: 18px; }
.result-metrics div, .volume-grid div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.result-metrics span, .volume-grid span { color: var(--muted); font-size: .94rem; }
.result-metrics strong, .volume-grid strong { font-size: 1.02rem; }
.volume-box { margin-top: 20px; padding: 16px; border-radius: var(--radius-md); background: var(--surface-2); border: 1px solid var(--line); }
.volume-title { margin: 0 0 8px; font-weight: 780; }
.volume-grid div:last-child { border-bottom: 0; }
.warnings { display: grid; gap: 10px; margin-top: 18px; }
.warning { padding: 13px 14px; border-radius: 14px; background: var(--warning-bg); color: var(--warning-ink); font-weight: 700; }
.warning.danger { background: #ffe9e9; color: #7a1919; }
.warning.good { background: #e8f8ef; color: #0c5c3b; }

.explain { padding: 34px 0 72px; display: grid; grid-template-columns: .72fr 1fr; gap: 48px; align-items: start; }
.explain-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.explain article { border-radius: var(--radius-md); padding: 22px; box-shadow: none; }
.explain p { color: var(--muted); line-height: 1.55; }

.faq { padding: 22px 0 76px; max-width: 880px; }
.faq details { margin-bottom: 12px; border-radius: 18px; padding: 18px 20px; box-shadow: none; }
.faq summary { cursor: pointer; font-weight: 780; }
.faq details p { color: var(--muted); line-height: 1.55; }

.site-footer {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 46px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: .94rem;
}
.site-footer nav { display: flex; gap: 16px; }

@media (max-width: 900px) {
  .top-nav { display: none; }
  .hero, .calculator-grid, .explain { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 36px; gap: 34px; }
  .truth-card { transform: none; }
  .results-panel { position: static; }
}
@media (max-width: 620px) {
  .form-grid, .explain-grid, .mini-metrics { grid-template-columns: 1fr; }
  h1 { font-size: 3.35rem; }
  .calculator-panel, .results-panel, .truth-card { padding: 18px; border-radius: 22px; }
  .site-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}