:root {
  --forest: #1E3A2F;
  --growth: #6B8E23;
  --sage: #A5B89B;
  --cream: #F2E9D8;
  --light: #F7F4EC;
  --gray: #E6E6E6;
  --charcoal: #222222;
  --white: #ffffff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: var(--charcoal);
  background: var(--light);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--forest);
  line-height: 1.15;
  margin: 0 0 18px;
}

h1 { font-size: clamp(42px, 7vw, 78px); }
h2 { font-size: clamp(30px, 4vw, 48px); }
h3 { font-size: 24px; }
p { margin: 0 0 18px; }
a { color: var(--forest); }

.site-header {
  background: rgba(247, 244, 236, 0.96);
  border-bottom: 1px solid rgba(30, 58, 47, 0.12);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  text-decoration: none;
  color: var(--forest);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

nav a {
  text-decoration: none;
  margin-left: 22px;
  color: var(--charcoal);
  font-size: 15px;
}

nav a:hover { color: var(--growth); }

.hero {
  background: linear-gradient(120deg, rgba(30,58,47,.92), rgba(30,58,47,.74)), url('assets/invisible-competitor-cover.jpeg') center/cover;
  color: var(--white);
  min-height: 680px;
  display: flex;
  align-items: center;
}

.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}

.hero h1, .hero h2 { color: var(--white); }
.hero .eyebrow { color: var(--cream); }
.hero p { font-size: 20px; max-width: 620px; }

.cover-card {
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.22);
  padding: 18px;
  border-radius: 18px;
  backdrop-filter: blur(8px);
}

.cover-card img {
  width: 100%;
  display: block;
  border-radius: 10px;
  box-shadow: 0 30px 70px rgba(0,0,0,.38);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: 13px;
  font-weight: 700;
  color: var(--growth);
  margin-bottom: 14px;
}

.button-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.button {
  display: inline-block;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--forest);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
}
.button.secondary {
  background: transparent;
  border: 1px solid currentColor;
  color: inherit;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 84px 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid rgba(30,58,47,.12);
  border-radius: 18px;
  padding: 30px;
  box-shadow: 0 18px 45px rgba(30,58,47,.06);
}

.feature-book {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 54px;
  align-items: center;
}

.feature-book img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 20px 55px rgba(0,0,0,.25);
}

.badge {
  display: inline-block;
  background: var(--cream);
  color: var(--forest);
  border: 1px solid rgba(30,58,47,.14);
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 700;
  margin-bottom: 18px;
}

.band {
  background: var(--forest);
  color: var(--white);
}
.band h2 { color: var(--white); }
.band .section { padding: 70px 24px; }

.contact-box {
  background: var(--cream);
  border-radius: 22px;
  padding: 44px;
  border: 1px solid rgba(30,58,47,.12);
}

.site-footer {
  background: var(--forest);
  color: var(--cream);
  padding: 36px 24px;
  text-align: center;
}

.site-footer a { color: var(--cream); }

.page-hero {
  background: var(--cream);
  padding: 80px 24px;
  text-align: center;
  border-bottom: 1px solid rgba(30,58,47,.12);
}
.page-hero p { max-width: 760px; margin: 0 auto; font-size: 19px; }

@media (max-width: 850px) {
  .nav-wrap { align-items: flex-start; flex-direction: column; }
  nav a { margin: 0 18px 10px 0; display: inline-block; }
  .hero-inner, .feature-book, .grid-3 { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
}