* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #0d1117; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid #c9a84c; outline-offset: 5px; }
[hidden] { display: none !important; }
.sales-page-a {
  --text: #fff; --text-muted: rgba(255,255,255,.75); --text-dim: rgba(255,255,255,.5);
  --accent: #c9a84c; --accent-hover: #b89540; --section-bg: rgba(255,255,255,.03);
  --border: rgba(255,255,255,.1); --max: 900px;
  --h1: clamp(38px,6vw,68px); --h2: clamp(32px,4.5vw,52px);
  --sub: clamp(18px,2.4vw,26px); --body: clamp(16px,2vw,20px);
  --padY: clamp(60px,8vw,100px); --padHero: clamp(100px,15vh,180px);
  font-family: Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color: var(--text); background: #0d1117; line-height: 1.7;
  -webkit-font-smoothing: antialiased; min-height: 100vh; overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
a:hover { opacity: .9; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--padY) 0; border-top: 1px solid transparent; scroll-margin-top: 70px; }
.section.alt { background: var(--section-bg); }
.section.hero { min-height: 100vh; display: flex; align-items: center; padding: var(--padHero) 0; text-align: center; }
.center { text-align: center; }
.kicker { font-size: 14px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-dim); margin: 0 0 20px; font-weight: 600; }
h1 { font-size: var(--h1); line-height: 1.15; letter-spacing: -.02em; margin: 0 0 24px; font-weight: 800; text-transform: uppercase; }
.subhead { font-size: var(--sub); color: var(--text-muted); margin: 0 auto 40px; max-width: 65ch; font-weight: 500; }
h2 { font-size: var(--h2); line-height: 1.2; letter-spacing: -.015em; margin: 0 0 24px; font-weight: 800; }
p { font-size: var(--body); margin: 0 0 20px; color: var(--text-muted); }
.muted { color: var(--text-dim); }
.cta-row { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; margin-top: 20px; justify-content: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 18px 40px; border-radius: 8px; border: 2px solid transparent; background: transparent; font-weight: 700; font-size: 17px; letter-spacing: .02em; transition: transform .25s,background .25s,box-shadow .25s; cursor: pointer; text-transform: uppercase; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,.3); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: 0 8px 24px rgba(255,107,53,.35); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.secondary { border-color: rgba(255,255,255,.3); color: var(--text); background: rgba(255,255,255,.05); }
.btn.secondary:hover { border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.1); }
.note { font-size: 14px; color: var(--text-dim); margin: 16px 0 0; font-weight: 500; }
ul { margin: 24px 0 0; padding-left: 0; font-size: var(--body); list-style: none; }
li { margin: 16px 0; padding-left: 32px; position: relative; color: var(--text-muted); }
li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 800; font-size: 20px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 32px; }
.quote { border-left: 4px solid var(--accent); margin: 32px 0; color: var(--text); background: var(--section-bg); padding: 24px; border-radius: 8px; }
.quote p { margin: 0; font-size: var(--sub); font-weight: 600; font-style: italic; }
.max-56 { max-width: 56ch; margin-left: auto; margin-right: auto; }
.spacer-16 { height: 16px; }
.spacer-28 { height: 28px; }
.gold { background: #c9a84c; color: #000; }
.gold p { color: #000; }
.topbar { position: fixed; top: 0; left: 0; right: 0; background: rgba(13,17,23,.95); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255,255,255,.1); z-index: 10; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { font-weight: 700; letter-spacing: .02em; font-size: 16px; }
.nav { display: flex; align-items: center; }
.nav a { font-size: 14px; color: var(--text-muted); margin-left: 24px; font-weight: 600; }
.nav a:hover { color: var(--accent); }
.menu-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; padding: 8px; }
.mobile-menu { position: fixed; top: 0; right: -100%; width: min(280px,100vw); height: 100dvh; background: rgba(26,26,26,.98); backdrop-filter: blur(20px); transition: right .3s; z-index: 999; padding: 80px 32px 32px; border-left: 1px solid var(--border); }
.mobile-menu.open { right: 0; }
.mobile-menu-close { position: absolute; top: 20px; right: 20px; background: none; border: none; color: var(--text); cursor: pointer; padding: 8px; font-size: 32px; line-height: 1; }
.mobile-menu a { display: block; color: var(--text-muted); font-weight: 600; font-size: 18px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.mobile-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 998; }
.about-layout { display: flex; gap: 40px; align-items: flex-start; }
.author { width: 200px; height: 200px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.book-carousel { display: flex; flex-direction: column; align-items: center; gap: 32px; }
.book-stage { position: relative; width: 320px; height: 480px; display: flex; align-items: center; justify-content: center; }
.book { position: absolute; width: 320px; transition: transform .6s,opacity .6s; }
.book img { display: block; width: 100%; height: auto; border-radius: 8px; }
.book.active { z-index: 3; box-shadow: 0 0 70px rgba(201,169,97,.8),0 16px 50px rgba(0,0,0,.5); }
.book.next,.book.previous { z-index: 2; opacity: .5; filter: brightness(.6); transform: scale(.72); }
.book.next { right: -165px; transform-origin: left center; }
.book.previous { left: -165px; transform-origin: right center; }
.carousel-controls,.carousel-dots { display: flex; align-items: center; gap: 16px; }
.carousel-dots { gap: 8px; }
.arrow { background: rgba(201,168,76,.15); border: 1px solid rgba(201,168,76,.4); border-radius: 50%; width: 40px; height: 40px; cursor: pointer; color: #c9a84c; font-size: 20px; }
.dot { width: 24px; height: 32px; padding: 0; border: none; cursor: pointer; background: none; display: grid; place-items: center; }
.dot::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.3); }
.dot.selected::before { background: #c9a84c; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 1000; padding: 8px 16px; color: #000; background: #c9a84c; }
.skip-link:focus { top: 8px; }
@media(max-width:780px) { .two-col { grid-template-columns: 1fr; gap: 24px; } }
@media(max-width:768px) {
  .section { scroll-margin-top: 90px; }
  .brand { font-size: 14px; }
  .nav { display: none; }
  .menu-toggle { display: block; }
  .about-layout { flex-direction: column-reverse; align-items: center; }
  .book-stage { width: min(260px,70vw); height: 400px; }
  .book { width: 100%; }
  .book.next { right: -100px; }
  .book.previous { left: -100px; }
}
@media(prefers-reduced-motion:reduce) { html { scroll-behavior: auto; } *,*::before,*::after { transition: none !important; } }