:root {
  color-scheme: light;
  --ink: #16211f;
  --muted: #5f6f6b;
  --line: #d9e2df;
  --paper: #f7faf7;
  --surface: #ffffff;
  --soft: #e8f1ee;
  --solar: #f1b83b;
  --solar-dark: #a66b00;
  --teal: #1f766d;
  --teal-dark: #144f4a;
  --roof: #863f32;
  --shadow: 0 18px 45px rgba(22, 33, 31, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 5vw, 64px);
  background: rgba(247, 250, 247, 0.93);
  border-bottom: 1px solid rgba(217, 226, 223, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background:
    linear-gradient(135deg, transparent 45%, rgba(255,255,255,0.55) 45% 55%, transparent 55%),
    linear-gradient(160deg, var(--roof), #4e2b29);
  box-shadow: inset 0 -8px 0 rgba(0,0,0,0.12);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.main-nav a {
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--teal-dark);
}

.hero {
  position: relative;
  min-height: 680px;
  display: grid;
  align-items: end;
  overflow: hidden;
  background: #0f1c1a;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(9, 20, 18, 0.9) 0%, rgba(9, 20, 18, 0.65) 48%, rgba(9, 20, 18, 0.18) 100%),
    linear-gradient(0deg, rgba(9, 20, 18, 0.58), rgba(9, 20, 18, 0.08));
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  position: relative;
  width: min(820px, calc(100% - 36px));
  margin: 0 0 clamp(54px, 9vw, 110px) clamp(18px, 6vw, 82px);
  color: #fff;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--solar);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.35rem, 6vw, 5.7rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  margin: 24px 0 0;
  color: rgba(255,255,255,0.88);
  font-size: clamp(1.08rem, 2vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 7px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #1d1a12;
  background: var(--solar);
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255,255,255,0.45);
  background: rgba(255,255,255,0.08);
}

.affiliate-note {
  max-width: 620px;
  margin: 14px 0 0;
  color: rgba(255,255,255,0.54);
  font-size: 0.78rem;
}

.intro-band {
  width: min(1180px, calc(100% - 36px));
  margin: -42px auto 0;
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.intro-band div {
  padding: 24px;
  background: var(--surface);
}

.intro-band strong,
.intro-band span {
  display: block;
}

.intro-band strong {
  margin-bottom: 8px;
}

.intro-band span {
  color: var(--muted);
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(64px, 9vw, 112px) 0;
}

.section h2 {
  max-width: 820px;
  margin: 0 0 22px;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.06;
  letter-spacing: 0;
}

.section h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
  line-height: 1.25;
}

.section p {
  color: var(--muted);
  font-size: 1.04rem;
}

.split,
.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}

.split.reverse {
  grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1fr);
}

.image-card {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.image-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.image-card figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 0.88rem;
}

.comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.comparison article,
.callout,
.fact-panel {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.comparison ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.comparison li + li {
  margin-top: 10px;
}

.muted {
  width: 100%;
  max-width: none;
  padding-left: max(18px, calc((100vw - 1180px) / 2));
  padding-right: max(18px, calc((100vw - 1180px) / 2));
  background: var(--soft);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 260px;
  padding: 28px;
  border: 1px solid rgba(31, 118, 109, 0.16);
  border-radius: 8px;
  background: rgba(255,255,255,0.72);
}

.card-number {
  display: inline-block;
  margin-bottom: 38px;
  color: var(--teal);
  font-weight: 800;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stat-grid div {
  padding: 22px;
  border-radius: 8px;
  color: #fff;
  background: var(--teal-dark);
}

.stat-grid span {
  display: block;
  margin-bottom: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.86rem;
}

.stat-grid strong {
  display: block;
  font-size: 1.35rem;
}

.stat-grid p {
  margin: 10px 0 0;
  color: rgba(255,255,255,0.78);
  font-size: 0.95rem;
}

.checklist {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin-top: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.checklist div {
  padding: 24px;
  background: var(--surface);
}

.callout {
  border-color: rgba(241, 184, 59, 0.5);
  background: #fff8e7;
}

.callout a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--solar-dark);
  font-weight: 800;
}

.vendor-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(24px, 5vw, 60px);
  align-items: center;
  margin-top: -36px;
  padding: clamp(34px, 5vw, 52px);
  border: 1px solid rgba(31, 118, 109, 0.18);
  border-radius: 8px;
  background: #eef7f4;
}

.vendor-block h2 {
  margin-bottom: 14px;
  font-size: clamp(1.65rem, 3vw, 2.45rem);
}

.vendor-block p {
  max-width: 780px;
  margin-bottom: 0;
}

.mail-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 7px;
  color: #fff;
  background: var(--teal-dark);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.faq {
  padding-top: 40px;
}

details {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  padding: 20px 4px;
  font-weight: 800;
  list-style-position: outside;
}

details p {
  max-width: 860px;
  margin: 0;
  padding: 0 4px 22px;
}

.sources {
  padding-top: 40px;
}

.sources h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
}

.sources ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.sources li + li {
  margin-top: 8px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 64px);
  color: rgba(255,255,255,0.82);
  background: #111c1a;
}

.site-footer p {
  margin: 6px 0 0;
}

.site-footer nav {
  display: flex;
  gap: 16px;
}

.site-footer a {
  color: #fff;
}

@media (max-width: 900px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 620px;
  }

  .hero-content {
    margin-right: 18px;
  }

  .intro-band,
  .comparison,
  .cards,
  .checklist,
  .split,
  .split.reverse,
  .two-column,
  .vendor-block {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .main-nav {
    gap: 14px;
    font-size: 0.9rem;
  }

  .hero {
    min-height: 700px;
  }

  .hero-media::after {
    background:
      linear-gradient(0deg, rgba(9, 20, 18, 0.88), rgba(9, 20, 18, 0.34)),
      linear-gradient(90deg, rgba(9, 20, 18, 0.65), rgba(9, 20, 18, 0.25));
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .intro-band {
    margin-top: 0;
    width: 100%;
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }

  .section {
    width: min(100% - 28px, 1180px);
  }

  .muted {
    padding-left: 14px;
    padding-right: 14px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}