:root {
  --navy: #0c315f;
  --blue: #138bc5;
  --teal: #159baa;
  --ink: #18324c;
  --muted: #52677b;
  --cream: #fbf8f1;
  --white: #ffffff;
  --line: #dce7e8;
  --peach: #f7d9cc;
  --mint: #dcefe5;
  --yellow: #f9e49b;
  --lavender: #e2dcf0;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--cream); font-family: "DM Sans", sans-serif; font-size: 1rem; line-height: 1.65; }
a { color: inherit; }
.site-header { max-width: 1240px; margin: auto; min-height: 88px; padding: 1rem 2rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: flex; align-items: center; gap: .72rem; text-decoration: none; text-transform: uppercase; color: var(--navy); font-weight: 700; letter-spacing: .16em; }
.brand-leaf { width: 48px; height: 48px; object-fit: contain; }
.brand sup, footer sup { margin-left: .12em; font-family: "DM Sans", sans-serif; font-size: .52em; font-weight: 600; line-height: 0; vertical-align: super; }
nav { display: flex; gap: 2rem; }
nav a { text-decoration: none; color: var(--muted); font-weight: 600; }
nav a:hover, nav a:focus-visible { color: var(--teal); }
.hero { max-width: 1240px; margin: auto; padding: 4.5rem 2rem 6rem; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 5rem; min-height: 720px; }
.eyebrow { margin: 0 0 1rem; text-transform: uppercase; color: var(--teal); font-size: .84rem; font-weight: 700; letter-spacing: .16em; }
h1, h2 { font-family: "Libre Baskerville", serif; color: var(--navy); line-height: 1.12; }
h1 { max-width: 720px; margin: 0; font-size: clamp(3rem, 6vw, 5.4rem); letter-spacing: -.045em; }
.intro { max-width: 650px; margin: 1.75rem 0; color: var(--muted); font-size: 1.18rem; }
.launch-card { width: fit-content; margin: 1.8rem 0; padding: .85rem 1.1rem; display: flex; align-items: baseline; flex-wrap: wrap; gap: .55rem 1.1rem; background: var(--white); border-left: 4px solid var(--teal); box-shadow: 0 12px 40px rgb(12 49 95 / .08); }
.launch-label { width: 100%; color: var(--muted); font-size: .77rem; text-transform: uppercase; letter-spacing: .13em; }
.launch-card strong { color: var(--navy); font-size: 1.12rem; }
.launch-price { color: var(--teal); font-weight: 700; }
.button-row { display: flex; flex-wrap: wrap; gap: .75rem; }
.button { display: inline-block; padding: .82rem 1.25rem; border-radius: .3rem; background: var(--navy); color: white; text-decoration: none; font-weight: 700; box-shadow: 0 8px 18px rgb(12 49 95 / .15); }
.button:hover, .button:focus-visible { background: #15477d; transform: translateY(-1px); }
.button-secondary { background: transparent; color: var(--navy); border: 1px solid var(--navy); box-shadow: none; }
.button-secondary:hover, .button-secondary:focus-visible { background: #eaf2f7; }
.cover-stage { position: relative; display: grid; justify-items: center; isolation: isolate; }
.cover-glow { position: absolute; z-index: -1; width: 86%; aspect-ratio: 1; top: 9%; background: radial-gradient(circle, rgb(21 155 170 / .24), transparent 66%); }
.cover-stage img { width: min(410px, 85%); height: auto; filter: drop-shadow(20px 28px 22px rgb(12 49 95 / .2)); transform: rotate(1.5deg); }
.cover-stage p { margin-top: 1.4rem; color: var(--navy); font-family: "Libre Baskerville", serif; font-weight: 700; }
.cover-stage p span { font-family: "DM Sans", sans-serif; color: var(--muted); font-weight: 500; }
.promise { padding: 2.5rem max(2rem, calc((100% - 1176px) / 2)); display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--navy); color: white; }
.promise div { padding: 2rem 2.3rem; border-right: 1px solid rgb(255 255 255 / .2); }
.promise div:last-child { border: 0; }
.promise strong { display: block; margin: 0 0 .4rem; font-family: "Libre Baskerville", serif; font-size: 1.25rem; }
.promise p { margin: 0; color: #d7e5f0; }
.book-section, .author { max-width: 1120px; margin: auto; padding: 7rem 2rem; display: grid; grid-template-columns: .95fr 1.05fr; gap: 6rem; }
h2 { margin: 0; font-size: clamp(2.2rem, 4vw, 3.6rem); letter-spacing: -.035em; }
.book-copy { color: var(--muted); font-size: 1.08rem; }
.excerpt-section { max-width: 1056px; margin: 0 auto 5rem; padding: 2.5rem; background: var(--mint); border-radius: .72rem; scroll-margin-top: 2rem; }
.excerpt-section > p:not(.eyebrow) { max-width: 680px; color: var(--muted); }
.excerpt-section h2 { font-size: clamp(2rem, 4vw, 3rem); }
.excerpt-section .excerpt-details { margin-bottom: 0; font-size: .875rem; }
blockquote { margin: 2rem 0 0; padding: 1.3rem 0 1.3rem 1.5rem; border-left: 4px solid var(--teal); color: var(--navy); font-family: "Libre Baskerville", serif; font-size: 1.25rem; font-style: italic; }
.uses { padding: 7rem max(2rem, calc((100% - 1176px) / 2)); background: var(--white); }
.uses > h2 { max-width: 650px; margin-bottom: 3.2rem; }
.uses-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; }
.uses article { min-height: 190px; padding: 1.45rem 1.55rem; border-radius: .72rem; }
.uses article:nth-child(4n+1) { background: #dbe8f8; }
.uses article:nth-child(4n+2) { background: var(--mint); }
.uses article:nth-child(4n+3) { background: var(--yellow); }
.uses article:nth-child(4n+4) { background: var(--peach); }
.uses article:nth-child(5) { background: var(--lavender); }
.uses article span { display: block; min-height: 3.1rem; font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif; font-size: 2.55rem; line-height: 1; }
.uses h3 { margin: .6rem 0 .4rem; color: var(--navy); font-family: "Libre Baskerville", serif; font-size: 1.25rem; }
.uses p { margin: 0; color: #425a70; }
.author { align-items: center; }
.author-signature { width: 280px; aspect-ratio: 1; display: grid; place-items: center; justify-self: center; overflow: hidden; border: 2px solid #c6e0e3; border-radius: 50%; background: linear-gradient(145deg, #ffffff, #edf6f5); box-shadow: 22px 25px 0 #d7edf0; }
.author-signature img { width: 106%; height: auto; display: block; }
.author p:last-child { color: var(--muted); font-size: 1.08rem; }
footer { padding: 2.2rem max(2rem, calc((100% - 1176px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 2rem; background: var(--navy); color: white; }
footer div { display: flex; flex-direction: column; }
footer span, footer p { color: #bfd2e3; margin: 0; }

@media (max-width: 850px) {
  .site-header { padding: .85rem 1.25rem; }
  nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 3rem; padding: 3rem 1.25rem 4rem; text-align: center; }
  .hero-copy { display: grid; justify-items: center; }
  h1 { font-size: clamp(2.6rem, 13vw, 4.2rem); }
  .intro { font-size: 1.05rem; }
  .cover-stage img { width: min(370px, 82vw); }
  .promise { grid-template-columns: 1fr; padding: 2rem 1.25rem; }
  .promise div { border-right: 0; border-bottom: 1px solid rgb(255 255 255 / .2); padding: 1.5rem .5rem; }
  .book-section, .author { grid-template-columns: 1fr; gap: 2.5rem; padding: 5rem 1.25rem; }
  .excerpt-section { margin: 0 1.25rem 3rem; padding: 1.5rem; }
  .uses { padding: 5rem 1.25rem; }
  .uses-grid { grid-template-columns: 1fr; }
  .uses article { min-height: auto; }
  .author-signature { width: 210px; }
  footer { align-items: flex-start; flex-direction: column; padding: 2rem 1.25rem; }
}

@media (prefers-reduced-motion: no-preference) {
  .button { transition: transform .2s ease, background .2s ease; }
}