:root {
  --ink: #0d1017;
  --ink-soft: #242a35;
  --paper: #f4efe5;
  --paper-light: #fffdf7;
  --blue: #2557d6;
  --blue-dark: #173b9f;
  --coral: #ee5b43;
  --yellow: #f5c84c;
  --muted: #6f7787;
  --line: rgba(13, 16, 23, .14);
  --max: 1180px;
  --radius: 22px;
  --shadow: 0 28px 80px rgba(10, 14, 25, .16);
}

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

a { color: inherit; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 99; padding: 10px 16px; background: #fff; color: #000; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  padding: 12px max(24px, calc((100vw - var(--max)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  color: #fff;
  background: rgba(13, 16, 23, .94);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  backdrop-filter: blur(16px);
}

.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; color: #fff; background: linear-gradient(135deg, var(--blue) 0 65%, var(--coral) 65%); font-size: 13px; letter-spacing: .06em; }
.site-header nav, .site-footer nav { display: flex; gap: 24px; }
.site-header nav a, .site-footer nav a { color: inherit; text-decoration: none; font-size: 14px; font-weight: 700; opacity: .78; }
.site-header nav a:hover, .site-footer nav a:hover { opacity: 1; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border: 0;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 850;
  letter-spacing: -.01em;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--coral); box-shadow: 0 14px 30px rgba(238, 91, 67, .27); }
.button-primary:hover { background: #db4934; box-shadow: 0 18px 38px rgba(238, 91, 67, .34); }
.button-light { color: var(--ink); background: #fff; }
.button-small { min-height: 42px; padding: 0 17px; color: #fff; background: var(--blue); font-size: 14px; }
.text-link { font-weight: 800; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }

.hero {
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(380px, .92fr);
  align-items: center;
  gap: clamp(40px, 7vw, 100px);
  padding: 92px max(24px, calc((100vw - var(--max)) / 2)) 104px;
  color: #fff;
  background-color: var(--ink);
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px), radial-gradient(circle at 15% 15%, rgba(37,87,214,.22), transparent 30%);
  background-size: 54px 54px, 54px 54px, auto;
  overflow: hidden;
}
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: 13px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.hero .eyebrow { color: var(--yellow); }
.hero h1 { max-width: 720px; margin: 0; font-size: clamp(48px, 6vw, 84px); line-height: .98; letter-spacing: -.055em; }
.hero h1 em { color: var(--coral); font-family: Georgia, serif; font-weight: 400; }
.hero-lead { max-width: 650px; margin: 28px 0 0; color: #b9c1d0; font-size: clamp(18px, 2vw, 22px); line-height: 1.55; }
.hero-actions { display: flex; align-items: center; gap: 24px; margin-top: 38px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 30px 0 0; padding: 0; list-style: none; color: #9da7b8; font-size: 13px; font-weight: 750; }
.trust-row li::before { content: "✓"; margin-right: 8px; color: var(--yellow); }

.product-stage { position: relative; min-height: 560px; perspective: 1400px; }
.book-object { position: absolute; top: 10px; right: 34px; width: 330px; height: 495px; transform: rotateY(-12deg) rotateZ(2deg); filter: drop-shadow(0 42px 40px rgba(0,0,0,.35)); }
.book-spine { position: absolute; inset: 7px auto 7px -24px; width: 28px; background: var(--blue-dark); transform: skewY(-25deg); border-left: 5px solid var(--coral); }
.book-face { position: absolute; inset: 0; padding: 42px 34px; display: flex; flex-direction: column; background-color: #11141b; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 42px 42px; border: 8px solid var(--blue); border-left-color: var(--coral); overflow: hidden; }
.book-face::before { content: ""; position: absolute; width: 180px; height: 44px; right: -38px; top: 22px; background: var(--yellow); transform: rotate(48deg); border-top: 24px solid var(--blue); }
.cover-kicker { position: relative; color: var(--yellow); font-size: 12px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.cover-index { margin-top: 40px; color: #8c95a7; font-size: 12px; letter-spacing: .22em; }
.book-face > strong { margin-top: 62px; font-size: 42px; line-height: .95; letter-spacing: -.05em; }
.book-face > strong b { color: var(--coral); font-size: 88px; line-height: 0; }
.cover-subtitle { margin-top: 34px; padding-top: 16px; color: #d3d8e1; border-top: 5px solid var(--blue); font-family: Georgia, serif; font-size: 20px; line-height: 1.3; }
.cover-credit { margin-top: auto; padding-top: 12px; border-top: 4px solid var(--coral); font-size: 11px; font-weight: 900; letter-spacing: .1em; }
.sheet-object { position: absolute; right: -14px; bottom: -6px; width: 310px; height: 205px; padding: 22px; color: var(--ink); background: var(--paper); border: 1px solid rgba(255,255,255,.7); box-shadow: 0 30px 55px rgba(0,0,0,.28); transform: rotate(7deg); }
.sheet-object span { display: block; padding: 7px 9px; color: #fff; background: var(--blue); font-size: 11px; font-weight: 900; }
.sheet-object i { display: block; height: 20px; border-bottom: 1px solid #c5bdad; }
.sheet-object b { position: absolute; right: 18px; bottom: 14px; color: var(--coral); font-size: 12px; }

.metrics-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; color: #fff; background: #2a303c; border-top: 1px solid rgba(255,255,255,.1); }
.metrics-band div { padding: 30px; display: flex; align-items: center; justify-content: center; gap: 14px; background: var(--ink-soft); }
.metrics-band strong { color: var(--yellow); font-size: 31px; line-height: 1; }
.metrics-band span { max-width: 130px; color: #bfc6d3; font-size: 13px; line-height: 1.25; }

.section { max-width: var(--max); margin: 0 auto; padding: 110px 24px; }
.section-heading { max-width: 790px; margin-bottom: 48px; }
.section-heading.compact { margin-bottom: 36px; }
.section-heading h2, .included-intro h2, .fit-panel h2, .offer-card h2 { margin: 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.03; letter-spacing: -.045em; }
.section-heading > p:last-child, .included-intro > p:last-child { max-width: 680px; margin: 22px 0 0; color: var(--muted); font-size: 19px; }
.card-grid { display: grid; gap: 20px; }
.card-grid.three { grid-template-columns: repeat(3, 1fr); }
.feature-card { min-height: 300px; padding: 34px; display: flex; flex-direction: column; border: 1px solid var(--line); background: var(--paper); }
.feature-card-dark { color: #fff; background: var(--ink); }
.feature-card > span { color: var(--coral); font-weight: 900; }
.feature-card h3 { margin: auto 0 10px; font-size: 26px; letter-spacing: -.03em; }
.feature-card p { margin: 0; color: var(--muted); }
.feature-card-dark p { color: #aab2c1; }

.comparison-section { display: grid; grid-template-columns: .75fr 1.25fr; gap: 80px; align-items: start; }
.comparison-table { border-top: 7px solid var(--blue); box-shadow: var(--shadow); }
.comparison-table > div { display: grid; grid-template-columns: 1fr 1fr; }
.comparison-table span { padding: 20px 22px; border: 1px solid var(--line); border-top: 0; background: #fff; }
.comparison-table span:nth-child(2) { font-weight: 800; background: #eef3ff; }
.comparison-head span { color: #fff; background: var(--ink) !important; font-size: 13px; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }

.included-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 85px; align-items: start; }
.included-intro { position: sticky; top: 112px; }
.deliverables { display: grid; gap: 12px; }
.deliverables article { padding: 24px; display: grid; grid-template-columns: 76px 1fr; gap: 22px; align-items: center; border: 1px solid var(--line); background: #fff; }
.deliverables article > span { display: grid; place-items: center; width: 72px; height: 72px; color: #fff; background: var(--blue); font-size: 13px; font-weight: 900; }
.deliverables article:nth-child(2) > span { background: var(--coral); }
.deliverables article:nth-child(3) > span { color: var(--ink); background: var(--yellow); }
.deliverables article:nth-child(4) > span { background: var(--ink); }
.deliverables h3 { margin: 0 0 4px; font-size: 22px; }
.deliverables p { margin: 0; color: var(--muted); }

.principles-section { padding: 110px max(24px, calc((100vw - var(--max)) / 2)); color: #fff; background: var(--blue-dark); }
.section-heading.light .eyebrow { color: var(--yellow); }
.principles-grid { margin: 46px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; list-style: none; background: rgba(255,255,255,.18); }
.principles-grid li { padding: 22px 24px; display: flex; gap: 20px; align-items: center; background: var(--blue-dark); font-size: 18px; font-weight: 760; }
.principles-grid span { color: var(--yellow); font-size: 13px; }

.fit-section { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.fit-panel { padding: 46px; border: 1px solid var(--line); }
.fit-panel h2 { font-size: clamp(32px, 4vw, 48px); }
.fit-panel ul, .offer-copy ul { margin: 28px 0 0; padding: 0; list-style: none; }
.fit-panel li, .offer-copy li { position: relative; margin: 13px 0; padding-left: 28px; }
.fit-panel li::before, .offer-copy li::before { content: "✓"; position: absolute; left: 0; color: var(--coral); font-weight: 900; }
.fit-panel.no { color: #fff; background: var(--ink); }
.fit-panel.no .eyebrow { color: var(--yellow); }
.fit-panel.no li::before { content: "—"; color: #8c95a7; }

.offer-section { padding-top: 70px; }
.offer-card { display: grid; grid-template-columns: 1.15fr .85fr; background: var(--paper); box-shadow: var(--shadow); border-top: 10px solid var(--coral); }
.offer-copy, .offer-buy { padding: clamp(36px, 6vw, 70px); }
.offer-copy h2 { font-size: clamp(38px, 4.5vw, 58px); }
.offer-buy { color: #fff; background: var(--ink); }
.price-label { display: block; color: #aab2c1; font-size: 13px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.price { display: block; margin-top: 6px; color: var(--yellow); font-size: clamp(54px, 7vw, 82px); line-height: 1; letter-spacing: -.06em; }
.offer-buy p { color: #b5bdca; }
.offer-buy .button { width: 100%; margin: 16px 0; }
.offer-buy small { display: block; color: #8892a4; line-height: 1.45; }
.ethical-note { max-width: 850px; margin: 24px auto 0; color: var(--muted); font-size: 13px; text-align: center; }

.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 24px 4px; display: flex; justify-content: space-between; gap: 20px; cursor: pointer; font-size: 20px; font-weight: 800; list-style: none; }
.faq-list summary::after { content: "+"; color: var(--blue); font-size: 26px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { max-width: 840px; margin: 0; padding: 0 4px 26px; color: var(--muted); }

.final-cta { padding: 100px 24px; color: #fff; background: var(--coral); text-align: center; }
.final-cta .eyebrow { color: var(--ink); }
.final-cta h2 { max-width: 820px; margin: 0 auto 32px; font-size: clamp(38px, 5vw, 66px); line-height: 1.02; letter-spacing: -.05em; }
.site-footer { min-height: 120px; padding: 28px max(24px, calc((100vw - var(--max)) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #d8dde6; background: var(--ink); }
.site-footer p { margin: 0; color: #8d97a9; font-size: 13px; }

dialog { width: min(92vw, 480px); padding: 34px; border: 0; border-top: 7px solid var(--yellow); color: #fff; background: var(--ink); box-shadow: var(--shadow); }
dialog::backdrop { background: rgba(0,0,0,.72); backdrop-filter: blur(4px); }
dialog strong { display: block; font-size: 26px; }
dialog p { color: #b5bdca; }
.dialog-close { position: absolute; right: 10px; top: 8px; border: 0; color: #fff; background: transparent; font-size: 28px; cursor: pointer; }

@media (max-width: 920px) {
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 70px; }
  .product-stage { min-height: 600px; }
  .book-object { left: 50%; right: auto; transform: translateX(-50%) rotateY(-10deg) rotateZ(2deg); }
  .sheet-object { left: 50%; right: auto; transform: translateX(-12%) rotate(6deg); }
  .metrics-band { grid-template-columns: repeat(2, 1fr); }
  .card-grid.three { grid-template-columns: 1fr; }
  .comparison-section, .included-section { grid-template-columns: 1fr; gap: 36px; }
  .included-intro { position: static; }
  .fit-section, .offer-card { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; text-align: center; }
}

@media (max-width: 620px) {
  .site-header { min-height: 64px; }
  .site-header .brand > span:last-child { display: none; }
  .button-small { font-size: 12px; }
  .hero { min-height: auto; padding-bottom: 72px; }
  .hero h1 { font-size: 46px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .product-stage { min-height: 510px; transform: scale(.84); transform-origin: top center; margin-bottom: -70px; }
  .metrics-band div { padding: 24px 16px; justify-content: flex-start; }
  .section { padding: 78px 20px; }
  .principles-section { padding: 78px 20px; }
  .principles-grid { grid-template-columns: 1fr; }
  .comparison-table > div { grid-template-columns: 1fr; }
  .comparison-table span:nth-child(2) { border-top: 0; }
  .comparison-head span:first-child { display: none; }
  .deliverables article { grid-template-columns: 58px 1fr; padding: 18px; }
  .deliverables article > span { width: 56px; height: 56px; }
  .fit-panel, .offer-copy, .offer-buy { padding: 34px 26px; }
}

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