:root {
  --ink: #082b4c;
  --teal: #049ea7;
  --orange: #ef7b16;
  --yellow: #ffc31a;
  --cream: #fff7df;
  --paper: #fffdf7;
  --muted: #5f6f79;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: ui-rounded, "Avenir Next", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: #006d75; font-weight: 700; }
img { display: block; max-width: 100%; }

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(22px, 6vw, 86px);
  border-bottom: 1px solid #e9dfc8;
  background: rgba(255, 253, 247, .96);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { color: var(--ink); font-size: 1.35rem; text-decoration: none; }
nav { display: flex; gap: 24px; }
nav a { text-decoration: none; }

main { overflow: hidden; }
.hero {
  min-height: 660px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  gap: clamp(36px, 7vw, 96px);
  align-items: center;
  padding: 70px clamp(22px, 8vw, 120px);
  background:
    radial-gradient(circle at 78% 25%, rgba(4, 158, 167, .23), transparent 30%),
    linear-gradient(135deg, #fff9e7, #ffedab);
}
.hero h1 { font-size: clamp(2.7rem, 6vw, 5.4rem); line-height: .98; margin: 12px 0 24px; max-width: 880px; }
.lead { font-size: clamp(1.05rem, 2vw, 1.3rem); max-width: 760px; }
.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-size: .78rem; font-weight: 900; color: #ad4c06; }
.hero-cover { width: min(390px, 100%); justify-self: center; border-radius: 8px; box-shadow: 0 24px 55px rgba(8, 43, 76, .22); transform: rotate(2deg); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.button { display: inline-block; padding: 13px 20px; border-radius: 999px; text-decoration: none; }
.button.primary { color: white; background: var(--ink); }
.button.secondary { color: var(--ink); background: white; border: 2px solid var(--ink); }

.proof { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #dfd4bc; border-top: 1px solid #dfd4bc; border-bottom: 1px solid #dfd4bc; }
.proof article { padding: 28px 22px; text-align: center; background: white; }
.proof strong { display: block; font-size: 1.55rem; }
.proof span { color: var(--muted); font-size: .95rem; }

.section-grid, .books { padding: 90px clamp(22px, 8vw, 120px); }
.section-grid { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr); gap: clamp(34px, 7vw, 90px); align-items: center; }
.section-grid h2, .section-heading h2 { font-size: clamp(2rem, 4vw, 3.6rem); line-height: 1.05; margin: 8px 0 22px; }
.video-section { background: #eaf8f5; }
.video-section video { width: min(350px, 100%); aspect-ratio: 9 / 16; background: #fff; border-radius: 20px; box-shadow: 0 18px 40px rgba(8, 43, 76, .16); justify-self: center; }
.printable { background: white; }
.printable img { max-height: 620px; justify-self: center; border: 1px solid #ddd; box-shadow: 0 16px 35px rgba(8, 43, 76, .12); }

.books { background: var(--cream); }
.section-heading { max-width: 760px; margin-bottom: 38px; }
.book-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
.book-card { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 24px; border-radius: 22px; background: white; box-shadow: 0 12px 30px rgba(8, 43, 76, .09); }
.book-card img { border-radius: 5px; box-shadow: 0 8px 18px rgba(8, 43, 76, .18); }
.book-card h3 { margin: 4px 0 12px; font-size: 1.6rem; }
.status { display: inline-block; margin: 0; padding: 4px 10px; border-radius: 999px; background: #f1ece0; color: var(--muted); font-size: .78rem; font-weight: 800; }
.status.live { background: #dff5e7; color: #176335; }

.author { background: #062a49; color: white; }
.author img { width: min(330px, 100%); justify-self: center; }
.author .eyebrow { color: #ffbd41; }

footer { padding: 34px clamp(22px, 8vw, 120px); background: #041d33; color: white; font-size: .9rem; }
.muted { color: var(--muted); }
footer .muted { color: #b9c5cc; }

@media (max-width: 800px) {
  .site-header { position: static; }
  nav { display: none; }
  .hero, .section-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
  .hero-cover { width: 280px; }
  .proof { grid-template-columns: repeat(2, 1fr); }
  .book-grid { grid-template-columns: 1fr; }
  .book-card { grid-template-columns: 120px 1fr; }
}

@media (max-width: 500px) {
  .proof, .book-card { grid-template-columns: 1fr; }
  .book-card img { width: 170px; }
}