:root {
  --bg: #030303;
  --panel: #10100e;
  --panel-soft: #171411;
  --text: #f7f2e8;
  --muted: #c9c2b8;
  --gold: #d9b25b;
  --gold-strong: #f3cf76;
  --line: rgba(217, 178, 91, 0.54);
  --shadow: rgba(243, 207, 118, 0.2);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 72% 18%, rgba(217, 178, 91, 0.13), transparent 28rem),
    linear-gradient(180deg, #020202 0%, #080705 42%, #020202 100%);
  color: var(--text);
  font-family: "Trebuchet MS", Arial, sans-serif;
  line-height: 1.55;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem clamp(1rem, 4vw, 4.5rem);
  background: rgba(3, 3, 3, 0.78);
  border-bottom: 1px solid rgba(217, 178, 91, 0.22);
  backdrop-filter: blur(18px);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(3, 3, 3, 0.92);
  box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.28);
}

.brand,
.nav,
.actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.75rem;
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--gold-strong);
  font-size: 0.76rem;
}

.nav {
  gap: clamp(0.8rem, 2vw, 2rem);
  color: var(--muted);
  font-size: 0.9rem;
}

.nav a {
  transition: color 180ms ease;
}

.nav a:hover {
  color: var(--gold-strong);
}

.hero {
  position: relative;
  min-height: clamp(34rem, 74vw, 56rem);
  display: grid;
  align-items: center;
  padding: clamp(5rem, 9vw, 8rem) clamp(1rem, 5vw, 6rem);
  overflow: hidden;
  isolation: isolate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(3, 3, 3, 0.92) 0%, rgba(3, 3, 3, 0.72) 36%, rgba(3, 3, 3, 0.14) 82%),
    linear-gradient(0deg, rgba(3, 3, 3, 0.9) 0%, transparent 34%);
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-copy {
  max-width: 45rem;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--gold-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 1.4rem;
  font-size: clamp(3rem, 7vw, 7.7rem);
  color: var(--gold-strong);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 4.4rem);
}

h3 {
  color: var(--gold-strong);
  font-size: 1rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-copy p:not(.eyebrow),
.split-section p,
.technology-copy p,
.results-copy p {
  max-width: 38rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
}

.actions {
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.4rem;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: linear-gradient(135deg, #f6d77b, #b58428);
  color: #080705;
  box-shadow: 0 0 2rem var(--shadow);
}

.button.secondary {
  color: var(--gold-strong);
  background: rgba(3, 3, 3, 0.42);
}

.wide {
  width: min(100%, 28rem);
}

main > section:not(.hero) {
  padding: clamp(3.8rem, 7vw, 7rem) clamp(1rem, 5vw, 6rem);
}

.split-section,
.technology,
.results,
.cta {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.intro {
  border-top: 1px solid rgba(217, 178, 91, 0.25);
  border-bottom: 1px solid rgba(217, 178, 91, 0.25);
  background: rgba(10, 9, 8, 0.72);
}

.image-band {
  padding-top: 0;
  padding-bottom: 0;
}

.image-band img,
.technology img,
.results img,
.cta img {
  width: 100%;
  border: 1px solid rgba(217, 178, 91, 0.42);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.45);
}

.section-heading {
  max-width: 70rem;
  margin: 0 auto 2.4rem;
  text-align: center;
}

.rule {
  display: block;
  width: 8rem;
  height: 1px;
  margin: 0 auto 1.3rem;
  background: linear-gradient(90deg, transparent, var(--gold-strong), transparent);
  box-shadow: 0 0 1.2rem var(--gold);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.4rem;
}

.benefit-grid article {
  min-height: 14rem;
  padding: 2rem 1.4rem;
  text-align: center;
  background: linear-gradient(180deg, rgba(23, 20, 17, 0.94), rgba(8, 7, 5, 0.94));
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  box-shadow: 0 0 2.5rem rgba(217, 178, 91, 0.09);
}

.benefit-grid p,
.step-list span,
.check-list,
.note {
  color: var(--muted);
}

.icon {
  display: block;
  margin-bottom: 1.1rem;
  color: var(--gold-strong);
  font-size: 3rem;
  line-height: 1;
}

.technology {
  background:
    linear-gradient(90deg, rgba(3, 3, 3, 0.94), rgba(10, 9, 8, 0.75)),
    var(--panel);
  border-top: 1px solid rgba(217, 178, 91, 0.22);
  border-bottom: 1px solid rgba(217, 178, 91, 0.22);
}

.steps {
  position: relative;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.4rem;
  max-width: 78rem;
  margin: 0 auto;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.step-list li {
  counter-increment: step;
  display: grid;
  gap: 0.65rem;
  justify-items: center;
  text-align: center;
}

.step-list li::before {
  content: counter(step);
  display: grid;
  width: 4.2rem;
  height: 4.2rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--gold-strong);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2rem;
  box-shadow: 0 0 1.6rem rgba(217, 178, 91, 0.14);
}

.step-list strong {
  color: var(--gold-strong);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.results {
  background: rgba(10, 9, 8, 0.72);
}

.check-list {
  display: grid;
  gap: 0.9rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 1.08rem;
}

.check-list li {
  position: relative;
  padding-left: 2.35rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: -0.15rem;
  display: grid;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  border: 1px solid var(--gold-strong);
  border-radius: 50%;
  color: var(--gold-strong);
  font-size: 0.9rem;
}

.cta {
  position: relative;
}

.cta-panel {
  padding: clamp(1.5rem, 3vw, 3rem);
  border: 1px solid rgba(217, 178, 91, 0.42);
  background: linear-gradient(180deg, rgba(23, 20, 17, 0.92), rgba(3, 3, 3, 0.92));
}

.note {
  margin: 1rem 0 0;
  font-size: 0.92rem;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem clamp(1rem, 5vw, 6rem);
  border-top: 1px solid rgba(217, 178, 91, 0.25);
  color: var(--muted);
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.2rem;
  }

  .hero {
    min-height: 48rem;
    align-items: end;
  }

  .hero::after {
    background:
      linear-gradient(0deg, rgba(3, 3, 3, 0.96) 0%, rgba(3, 3, 3, 0.82) 42%, rgba(3, 3, 3, 0.22) 100%);
  }

  .hero-image {
    object-position: 63% center;
  }

  .split-section,
  .technology,
  .results,
  .cta,
  .benefit-grid,
  .step-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .brand {
    font-size: 0.82rem;
  }

  .hero {
    min-height: 42rem;
    padding-top: 6rem;
  }

  h1 {
    max-width: 10ch;
  }

  .button {
    width: 100%;
  }

  .image-band {
    padding-left: 0;
    padding-right: 0;
  }

  .image-band img,
  .technology img,
  .results img,
  .cta img {
    border-left: 0;
    border-right: 0;
  }

  footer {
    flex-direction: column;
  }
}