:root {
  --ink: #151b20;
  --muted: #66717a;
  --paper: #f7f8f5;
  --white: #ffffff;
  --line: #dde4dc;
  --green: #1f6b46;
  --blue: #245c73;
  --yellow: #e2b33c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

a { color: inherit; }

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

.nav {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  text-decoration: none;
  font-size: 20px;
  font-weight: 900;
}

.nav-link {
  color: var(--green);
  font-weight: 900;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 390px);
  gap: 40px;
  align-items: center;
  padding: 56px 0 66px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 18px;
  max-width: 780px;
  font-size: clamp(40px, 6vw, 70px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede {
  max-width: 690px;
  color: var(--muted);
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 6px;
  font-weight: 900;
  text-decoration: none;
}

.primary {
  background: var(--green);
  color: var(--white);
}

.secondary {
  border: 2px solid var(--green);
  color: var(--green);
}

.full { width: 100%; }

.fine {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.checkout-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 24px 80px rgba(21, 27, 32, 0.12);
}

.checkout-card h2 {
  margin: 0;
  font-size: 58px;
}

.checkout-card ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 24px;
  padding-left: 20px;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-strip span {
  padding: 18px;
  text-align: center;
  font-weight: 900;
  border-right: 1px solid var(--line);
}

.proof-strip span:last-child { border-right: 0; }

.section {
  padding: 62px 0;
}

.section-copy {
  max-width: 730px;
  margin-bottom: 24px;
}

h2 {
  margin: 0 0 14px;
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: 0;
}

p { color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.grid.three {
  grid-template-columns: repeat(3, 1fr);
}

article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

article h3 {
  margin-top: 0;
}

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

.sample-box {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 30px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.sample-list {
  display: grid;
  gap: 12px;
}

.sample-list div {
  display: grid;
  gap: 4px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.sample-list strong {
  color: var(--green);
}

.sample-list span {
  color: var(--muted);
}

.dark {
  width: 100%;
  background: var(--green);
  color: var(--white);
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 34px;
  padding-left: max(16px, calc((100vw - 1120px) / 2));
  padding-right: max(16px, calc((100vw - 1120px) / 2));
}

.dark p,
.dark .eyebrow {
  color: #d8efe2;
}

ol {
  margin: 0;
  display: grid;
  gap: 14px;
}

.offer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

footer {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .hero,
  .dark {
    grid-template-columns: 1fr;
  }
  .grid,
  .proof-strip,
  .grid.three,
  .sample-box {
    grid-template-columns: 1fr 1fr;
  }
  h1 { font-size: 40px; }
}

@media (max-width: 560px) {
  .grid,
  .proof-strip,
  .grid.three,
  .sample-box {
    grid-template-columns: 1fr;
  }
  .offer,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}