/* ============================================================
   CheatCode — white ground, black ink, lightning blue #7CC9FF
   ============================================================ */

:root {
  --white: #ffffff;
  --ink: #0a0a0a;
  --ink-soft: #55595e;
  --blue: #7cc9ff;
  --blue-deep: #2b8fe6;
  --line: #ebedef;
  --font-sans: "Geist", -apple-system, "Helvetica Neue", sans-serif;
  --font-mono: "Geist Mono", "SF Mono", monospace;
  --pad-x: clamp(20px, 5vw, 72px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

section[id] { scroll-margin-top: 72px; }

body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--blue); color: var(--ink); }

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  text-wrap: balance;
}

em { font-style: normal; color: var(--blue-deep); }

a { color: inherit; }

/* ---------- eyebrow / mono labels ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 3px;
  background: var(--blue);
  margin-right: 12px;
  vertical-align: middle;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: 999px;
  transition: background-color .25s ease, color .25s ease, border-color .25s ease, transform .25s ease;
}

.btn-solid {
  background: var(--ink);
  color: var(--white);
  border: 1px solid var(--ink);
}

.btn-solid:hover { background: var(--blue-deep); border-color: var(--blue-deep); transform: translateY(-1px); }

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn-ghost:hover { border-color: var(--blue); }

.btn-lg { font-size: clamp(16px, 2vw, 20px); padding: 18px 36px; }

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px var(--pad-x);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}

.nav.scrolled { border-bottom-color: var(--line); }

.wordmark {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.04em;
  text-decoration: none;
  color: var(--ink);
}

.cursor {
  color: var(--blue-deep);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink-soft);
  transition: color .2s ease;
}

.nav-links a:hover { color: var(--ink); }

.nav .btn { padding: 10px 22px; font-size: 14px; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

#shader {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-fade {
  position: absolute;
  inset: auto 0 0 0;
  height: 160px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), var(--white));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 140px var(--pad-x) 100px;
  max-width: 1200px;
}

.hero h1 {
  font-size: clamp(48px, 8.5vw, 118px);
  margin: 26px 0 30px;
}

.hero-sub {
  max-width: 560px;
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 42px;
}

/* ---------- clients marquee ---------- */

.clients {
  padding: 40px 0 96px;
}

.clients-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: center;
  margin-bottom: 34px;
}

.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
}

.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  list-style: none;
  animation: marquee 32s linear infinite;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

.marquee-track li {
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: #b9bfc6;
  padding: 0 34px;
  transition: color .3s ease;
}

.marquee-track li:hover { color: var(--ink); }

.marquee-track li::after {
  content: "·";
  color: var(--blue);
  margin-left: 68px;
  font-weight: 700;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- sections ---------- */

.section {
  padding: 110px var(--pad-x);
  max-width: 1280px;
  margin: 0 auto;
}

.section-head { margin-bottom: 64px; }

.section-head h2 {
  font-size: clamp(34px, 4.6vw, 58px);
  margin-top: 20px;
}

/* ---------- results ledger ---------- */

.results {
  list-style: none;
}

.result {
  display: grid;
  grid-template-columns: minmax(300px, 420px) 1fr;
  align-items: center;
  gap: 40px;
  padding: 44px 22px;
  border-top: 1px solid var(--line);
  transition: background-color .3s ease;
}

.result:last-child { border-bottom: 1px solid var(--line); }

.result:hover { background: #f5faff; }

.result-stat {
  font-size: clamp(46px, 6vw, 82px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--blue-deep);
  white-space: nowrap;
}

.result:hover .result-stat { color: var(--blue); }

.result-unit {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 12px;
}

.result-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 10px;
}

.result-tag::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--blue);
  margin-right: 10px;
}

.result-body > p:not(.result-tag) {
  font-size: clamp(16px, 1.5vw, 18px);
  color: var(--ink-soft);
  max-width: 560px;
  text-wrap: pretty;
}

/* ---------- book ---------- */

.book {
  padding: 150px var(--pad-x) 120px;
  text-align: center;
}

.book h2 {
  font-size: clamp(38px, 6.4vw, 84px);
}

.book > p {
  max-width: 480px;
  margin: 26px auto 54px;
  color: var(--ink-soft);
}

.book-embed {
  max-width: 1040px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--white);
}

.book-embed iframe {
  display: block;
  width: 100%;
  height: 680px;
  border: 0;
}

.book-alt {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.book-alt a { color: var(--blue-deep); }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 44px var(--pad-x) 52px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer p {
  font-size: 13.5px;
  color: var(--ink-soft);
}

.footer a { color: inherit; }

/* ---------- reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1);
}

.reveal.in { opacity: 1; transform: none; }

.d1 { transition-delay: .1s; }
.d2 { transition-delay: .2s; }
.d3 { transition-delay: .3s; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero-inner { padding-top: 120px; }
  .hero h1 br, .book h2 br { display: none; }
  .result {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 36px 4px;
  }
  .book-embed iframe { height: 620px; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; }
  .cursor { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}