:root {
  --ink: #18201f;
  --muted: #5d6765;
  --line: #e4e8e6;
  --paper: #ffffff;
  --soft: #f5f7f6;
  --brand: #003b34;
  --brand-soft: #28544d;
  --accent: #e6b53f;
  --focus: #1d73e8;
  --radius: 10px;
  --content: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
}

.brand {
  color: var(--brand);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.055em;
  text-decoration: none;
}

.article-shell {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 52px 0 72px;
}

.hero h1 {
  max-width: 730px;
  margin: 0;
  font-size: clamp(2.35rem, 6.4vw, 4rem);
  font-weight: 850;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.hero-subtitle {
  margin: 28px 0 34px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2.2vw, 1.35rem);
  line-height: 1.45;
}

.hero-image,
.content-image {
  width: 100%;
  border-radius: var(--radius);
  background: var(--soft);
  object-fit: cover;
}

.hero-image {
  aspect-ratio: 1;
}

.quote,
.testimonial {
  margin: 26px 0 0;
  font-style: italic;
}

.quote {
  padding: 23px 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fafbfa;
}

.quote-featured {
  border-left: 4px solid var(--brand-soft);
  background: #f4f7f6;
}

.quote p,
.testimonial p {
  margin: 0;
}

.quote cite,
.testimonial cite {
  display: block;
  margin-top: 12px;
  color: var(--brand-soft);
  font-size: 0.9rem;
  font-style: normal;
  font-weight: 750;
}

.reason {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.hero + .reason {
  margin-top: 54px;
}

.reason-heading {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: start;
  margin-bottom: 27px;
}

.reason-number {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: linear-gradient(145deg, var(--brand), #4c716b);
  font-weight: 800;
  line-height: 1;
}

.reason h2,
.primary-cta h2,
.after-reading h2,
.last-word h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3.8vw, 2.25rem);
  font-weight: 820;
  letter-spacing: -0.025em;
  line-height: 1.14;
}

.reason p {
  margin: 18px 0 0;
}

.content-image {
  margin: 0 0 28px;
  aspect-ratio: 1;
}

.content-image-wide {
  aspect-ratio: 4 / 3;
  object-fit: contain;
}

.insight-box {
  margin: 24px 0;
  padding: 18px 20px;
  border: 1px solid #dfe5e3;
  border-radius: 6px;
  background: var(--soft);
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 31px;
}

.check-list li::before {
  position: absolute;
  top: 0;
  left: 2px;
  color: #1d9b55;
  content: "✓";
  font-weight: 900;
}

.primary-cta {
  padding: clamp(34px, 6vw, 56px);
  border-radius: var(--radius);
  color: white;
  background:
    radial-gradient(circle at 88% 8%, rgba(255, 255, 255, 0.19), transparent 38%),
    linear-gradient(135deg, #003b34, #315d58);
  text-align: center;
  box-shadow: 0 16px 38px rgba(0, 59, 52, 0.14);
}

.primary-cta p {
  margin: 16px 0 0;
}

.primary-cta .cta-meta {
  margin-top: 18px;
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 23px;
  padding: 14px 26px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:focus-visible,
.brand:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.button-light {
  color: var(--brand);
  background: white;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
}

.button-dark {
  color: white;
  background: var(--brand);
}

.guarantee-badge {
  display: table;
  margin: 21px auto 0;
  padding: 7px 15px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 750;
}

.after-reading {
  margin-top: 34px;
  padding: 42px clamp(20px, 5vw, 44px);
  background: #fafbfa;
}

.after-reading h2 {
  margin-bottom: 28px;
  text-align: center;
}

.testimonial {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: white;
}

.last-word {
  padding: 68px 0 10px;
  text-align: center;
}

.last-word h2 {
  font-size: 1.28rem;
}

.last-word p {
  max-width: 650px;
  margin: 17px auto 0;
  color: var(--muted);
}

.site-footer {
  display: grid;
  min-height: 112px;
  place-items: center;
  padding: 28px 20px;
  color: rgba(255, 255, 255, 0.78);
  background: var(--brand);
  font-size: 0.82rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .site-header {
    min-height: 62px;
  }

  .article-shell {
    width: min(calc(100% - 34px), var(--content));
    padding-top: 32px;
  }

  .hero h1 {
    font-size: clamp(2.15rem, 10.4vw, 2.85rem);
  }

  .hero-subtitle {
    margin: 22px 0 28px;
  }

  .reason {
    padding: 44px 0;
  }

  .reason-heading {
    grid-template-columns: 40px 1fr;
    gap: 13px;
  }

  .reason-number {
    width: 40px;
    height: 40px;
  }

  .quote,
  .testimonial,
  .insight-box {
    padding: 18px;
  }

  .primary-cta {
    margin-right: -4px;
    margin-left: -4px;
  }

  .button {
    width: 100%;
    padding-right: 18px;
    padding-left: 18px;
  }

  .after-reading {
    margin-right: -4px;
    margin-left: -4px;
  }
}

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

  .button {
    transition: none;
  }
}