:root {
  --night: #0b1427;
  --ink: #14223b;
  --slate: #63727d;
  --sky: #91aeba;
  --mist: #dbe5e3;
  --paper: #f1ede4;
  --gold: #d7a45b;
  --cream: #fffaf0;
  --font-display: Georgia, "Times New Roman", serif;
  --font-sans: Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-sans), sans-serif; }
a { color: inherit; text-decoration: none; }
p, h1, h2, h3, dl, dd { margin-top: 0; }

.site-header {
  position: absolute; z-index: 20; top: 0; left: 0; width: 100%; height: 112px;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 0 5vw; color: var(--cream); border-bottom: 1px solid rgba(255,255,255,.17);
}
.wordmark { display: flex; flex-direction: column; width: max-content; font: 20px/.85 var(--font-display), serif; }
.wordmark span:last-child { color: var(--gold); font-style: italic; margin-left: 18px; }
nav { display: flex; gap: 30px; }
nav a, .small-link { font-size: 10px; text-transform: uppercase; letter-spacing: .16em; }
.small-link { justify-self: end; }
.small-link span { color: var(--gold); margin-left: 8px; }
.menu-button { display: none; color: var(--cream); border: 1px solid rgba(255,255,255,.35); background: transparent; padding: 10px 12px; font: 10px var(--font-sans); letter-spacing: .15em; text-transform: uppercase; cursor: pointer; }

.hero {
  position: relative; min-height: 940px; overflow: hidden; color: var(--cream);
  background:
    linear-gradient(90deg, rgba(7,16,34,.94) 0%, rgba(10,21,42,.8) 35%, rgba(10,21,42,.18) 72%, rgba(10,21,42,.08) 100%),
    linear-gradient(0deg, rgba(8,18,38,.38), transparent 45%),
    url("images/cover-image.png") center center / cover no-repeat;
}
.hero::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 190px;
  background: linear-gradient(transparent, rgba(215,226,224,.58));
}
.hero-copy { position: relative; z-index: 5; width: min(760px, 87vw); padding-top: 215px; margin-left: 8vw; }
.eyebrow { margin-bottom: 24px; color: #e4c38c; text-transform: uppercase; letter-spacing: .24em; font-size: 10px; font-weight: 600; }
.eyebrow.dark { color: #9b6c33; }
h1 {
  margin-bottom: 38px; font: 400 clamp(70px, 8vw, 124px)/.75 var(--font-display), serif;
  letter-spacing: -.05em;
}
h1 em, h1 > span { display: block; font-weight: 400; }
h1 em { margin: 18px 0 0 5vw; color: #d6e3e3; }
h1 > span { margin: 16px 0 0 10vw; color: #e7c98f; font-style: italic; }
.intro { max-width: 520px; margin-bottom: 36px; color: rgba(255,250,240,.8); font: 21px/1.55 var(--font-display), serif; }
.hero-actions { display: flex; align-items: center; gap: 30px; }
.hero-actions > p { margin: 0; max-width: 160px; color: rgba(255,255,255,.5); font-size: 8px; line-height: 1.7; letter-spacing: .15em; text-transform: uppercase; }
.primary-button {
  display: inline-flex; align-items: center; gap: 26px; padding: 16px 20px;
  border: 1px solid rgba(255,255,255,.43); font-size: 9px; text-transform: uppercase;
  letter-spacing: .2em; transition: .25s ease;
}
.primary-button:hover { background: var(--cream); color: var(--night); }
.primary-button span { color: var(--gold); font-size: 15px; }
.scroll-note { position: absolute; z-index: 5; bottom: 42px; left: 8vw; font-size: 8px; letter-spacing: .23em; text-transform: uppercase; opacity: .66; }
.mist { position: absolute; border-radius: 50%; filter: blur(70px); background: rgba(184,210,215,.16); }
.mist-one { width: 580px; height: 300px; right: -100px; top: 320px; }
.mist-two { width: 400px; height: 220px; left: 10%; bottom: -80px; }
.cover-credit {
  position: absolute; z-index: 5; right: 4vw; bottom: 42px; color: rgba(255,255,255,.55);
  font-size: 8px; letter-spacing: .18em; text-transform: uppercase;
}

.premise-section {
  display: grid; grid-template-columns: .45fr 1.25fr 1fr; gap: 7vw;
  padding: 150px 8vw 125px;
}
.section-number { color: #b78a52; font: 18px var(--font-display), serif; }
.premise-heading h2, .section-intro h2, .bridge-heading h2, .journey-intro h2,
.ai-copy h2, .principles-grid > h2, .author-section h2, .book-section h2 {
  font: 400 clamp(48px, 5vw, 78px)/.96 var(--font-display), serif; letter-spacing: -.035em;
}
.premise-copy { padding-top: 45px; color: #4e5969; font-size: 14px; line-height: 1.9; }
.dropcap:first-letter { float: left; padding: 9px 10px 0 0; color: #a4743c; font: 70px/.75 var(--font-display), serif; }
.pull-quote { grid-column: 2 / 4; display: flex; align-items: flex-start; gap: 25px; margin-top: 35px; padding-top: 30px; border-top: 1px solid #c8bda9; }
.pull-quote span { color: var(--gold); font: 70px/1 var(--font-display), serif; }
.pull-quote p { max-width: 720px; font: italic 34px/1.3 var(--font-display), serif; }

.framework-section { padding: 130px 8vw; background: var(--night); color: var(--cream); }
.section-intro { max-width: 680px; }
.section-intro > p:last-child { max-width: 480px; color: #99a7b5; line-height: 1.75; }
.orientation-grid { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 80px; border-top: 1px solid #344055; }
.orientation-grid article { min-height: 530px; padding: 34px 30px; border-right: 1px solid #344055; }
.orientation-grid article:first-child { border-left: 1px solid #344055; }
.card-top { display: flex; justify-content: space-between; align-items: center; }
.card-num { color: #768392; font-size: 9px; letter-spacing: .15em; }
.orientation-symbol { color: var(--gold); font: 44px var(--font-display), serif; }
.card-label { margin: 65px 0 12px; color: #c6aa7b; font-size: 9px; text-transform: uppercase; letter-spacing: .18em; }
.orientation-grid h3 { font: 36px/1.1 var(--font-display), serif; }
.card-description { min-height: 120px; color: #9ba7b6; font-size: 13px; line-height: 1.75; }
.orientation-grid dl { margin: 38px 0 0; border-top: 1px solid #344055; }
.orientation-grid dl div { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid #344055; }
.orientation-grid dt { color: #758291; font-size: 8px; text-transform: uppercase; letter-spacing: .14em; }
.orientation-grid dd { color: #d8ccb8; font: italic 15px var(--font-display), serif; text-align: right; }

.bridge-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 10vw; padding: 145px 8vw; background: #e8e1d4; }
.bridge-heading > p:last-child { max-width: 440px; color: #5c6470; line-height: 1.8; }
.lever-list article { display: grid; grid-template-columns: 45px 1fr; gap: 20px; padding: 28px 0; border-top: 1px solid #bcb2a1; }
.lever-list article:last-child { border-bottom: 1px solid #bcb2a1; }
.lever-list > article > span { padding-top: 7px; color: #a4743c; font-size: 9px; letter-spacing: .15em; }
.lever-list h3 { margin-bottom: 7px; font: 28px/1.2 var(--font-display), serif; }
.lever-list p { margin: 0; color: #5f6670; font-size: 12px; line-height: 1.65; }

.journey-section { padding: 135px 8vw; background: #8fa8b2; }
.journey-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 7vw; }
.journey-intro .eyebrow { grid-column: 1 / -1; margin-bottom: 0; color: #6d4f2f; }
.journey-intro > p:last-child { max-width: 430px; color: #2f4654; line-height: 1.75; align-self: end; }
.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin-top: 75px; background: rgba(20,34,59,.2); border: 1px solid rgba(20,34,59,.2); }
.case-grid article { min-height: 300px; padding: 36px 30px; background: #9bb2ba; }
.case-era { color: #705033; font-size: 8px; text-transform: uppercase; letter-spacing: .18em; }
.case-grid h3 { margin: 80px 0 16px; font: 30px var(--font-display), serif; }
.case-grid article > p:last-child { color: #304754; font-size: 12px; line-height: 1.7; }

.ai-section { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 8vw; padding: 130px 8vw; background: #101b31; color: var(--cream); overflow: hidden; }
.ai-mark { color: transparent; -webkit-text-stroke: 1px rgba(215,164,91,.5); font: 120px/1 var(--font-display), serif; letter-spacing: -.08em; }
.ai-mark sup { font-size: 36px; vertical-align: top; }
.ai-copy p:last-child { max-width: 600px; color: #9aa6b5; line-height: 1.8; }

.principles-section { padding: 135px 8vw; }
.principles-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 9vw; }
.principles-grid ol { margin: 0; padding: 0; list-style: none; }
.principles-grid li { display: grid; grid-template-columns: 45px 1fr; gap: 20px; padding: 25px 0; border-top: 1px solid #c7bdac; }
.principles-grid li:last-child { border-bottom: 1px solid #c7bdac; }
.principles-grid li span { color: #a4743c; font-size: 9px; }
.principles-grid li p { margin: 0; font: 22px/1.35 var(--font-display), serif; }

.author-section { display: grid; grid-template-columns: .65fr 1.35fr; align-items: center; gap: 9vw; padding: 130px 12vw; background: #d8d1c5; }
.author-monogram { display: grid; place-items: center; aspect-ratio: 1; border: 1px solid #aa9c87; border-radius: 50%; color: #986d3b; font: italic 84px var(--font-display), serif; }
.author-section h2 { margin-bottom: 22px; }
.author-section div:last-child > p:last-child { max-width: 620px; color: #59616d; line-height: 1.85; }

.book-section { padding: 140px 8vw; text-align: center; background: #91aab4; }
.book-section h2 { max-width: 850px; margin: 0 auto 26px; }
.book-section > p:not(.eyebrow) { max-width: 580px; margin: 0 auto 35px; color: #304754; line-height: 1.75; }
.book-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 0; margin: 0 auto 38px; }
.book-meta span { padding: 0 20px; border-right: 1px solid rgba(20,34,59,.3); font-size: 8px; text-transform: uppercase; letter-spacing: .14em; }
.book-meta span:last-child { border: 0; }
.primary-button.light { border-color: rgba(20,33,57,.4); }
.primary-button.light:hover { background: var(--night); color: white; }

footer { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 40px; padding: 70px 8vw; background: #081226; color: var(--cream); }
.footer-mark { font-size: 27px; }
footer p { max-width: 350px; margin: 0; color: #8290a1; font: italic 16px var(--font-display), serif; }
footer > a { color: #c9b083; font-size: 8px; text-transform: uppercase; letter-spacing: .18em; }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; height: 90px; }
  .small-link { display: none; }
  .menu-button { display: block; justify-self: end; }
  nav {
    display: none; position: absolute; top: 90px; left: 0; right: 0; padding: 24px 7vw;
    flex-direction: column; gap: 22px; background: rgba(8,18,38,.98);
    border-bottom: 1px solid rgba(255,255,255,.15);
  }
  nav.is-open { display: flex; }
  .hero { min-height: 900px; }
  .hero-copy { padding-top: 165px; margin-left: 7vw; }
  h1 { font-size: clamp(58px, 16vw, 84px); }
  h1 em, h1 > span { margin-left: 0; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero { background-position: 58% center; }
  .cover-credit { right: 7vw; }
  .premise-section, .bridge-section, .principles-grid, .author-section, .ai-section { grid-template-columns: 1fr; }
  .premise-section, .framework-section, .bridge-section, .journey-section, .ai-section, .principles-section, .author-section, .book-section { padding: 95px 7vw; }
  .section-number { display: none; }
  .premise-copy { padding-top: 0; }
  .pull-quote { grid-column: 1; }
  .orientation-grid, .case-grid { grid-template-columns: 1fr; }
  .orientation-grid article { border-left: 1px solid #344055; border-bottom: 1px solid #344055; }
  .journey-intro { grid-template-columns: 1fr; }
  .case-grid h3 { margin-top: 45px; }
  .ai-mark { font-size: 90px; }
  .author-monogram { max-width: 300px; }
  footer { grid-template-columns: 1fr; align-items: start; padding: 60px 7vw; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}