:root {
  color-scheme: dark;
  --bg: #0f1316;
  --panel: #171d22;
  --panel-2: #202830;
  --text: #f5f7fa;
  --muted: #aab5bd;
  --gold: #f5c542;
  --line: rgba(245, 197, 66, 0.34);
  --shadow: rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 54px);
  background: rgba(15, 19, 22, 0.74);
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-size: 15px;
}

nav {
  display: flex;
  gap: clamp(12px, 2vw, 28px);
  color: var(--muted);
  font-size: 14px;
}

nav a:hover,
.file-list a:hover span {
  color: var(--gold);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
}

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

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(15, 19, 22, 0.92) 0%, rgba(15, 19, 22, 0.52) 48%, rgba(15, 19, 22, 0.18) 100%),
    linear-gradient(0deg, rgba(15, 19, 22, 0.9) 0%, rgba(15, 19, 22, 0) 45%);
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 32px));
  margin: 0 clamp(18px, 5vw, 72px) 10vh;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(54px, 9vw, 116px);
  line-height: 0.92;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.02;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.hero-copy {
  max-width: 680px;
  margin: 22px 0 0;
  color: #d9e0e5;
  font-size: clamp(18px, 2.2vw, 24px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  font-weight: 800;
}

.button.primary {
  background: var(--gold);
  color: #121313;
}

.button.secondary {
  background: rgba(15, 19, 22, 0.58);
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
  background: #12171b;
}

.status-strip div {
  min-height: 110px;
  display: grid;
  align-content: center;
  gap: 2px;
  padding: 22px clamp(16px, 3vw, 44px);
  border-right: 1px solid rgba(245, 247, 250, 0.08);
}

.status-strip strong {
  color: var(--gold);
  font-size: 30px;
}

.status-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: clamp(56px, 8vw, 104px) clamp(18px, 5vw, 72px);
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(300px, 1fr);
  gap: clamp(32px, 6vw, 84px);
  align-items: start;
}

.copy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  color: var(--muted);
  font-size: 17px;
}

.section-heading {
  max-width: 880px;
  margin-bottom: 34px;
}

.systems {
  background: var(--panel);
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(245, 247, 250, 0.08);
  border: 1px solid rgba(245, 247, 250, 0.08);
}

.system-grid article {
  min-height: 210px;
  padding: 26px;
  background: var(--panel-2);
}

.system-grid p {
  margin: 0;
  color: var(--muted);
}

.image-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(280px, 0.75fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.image-band.reverse {
  background: #12171b;
}

.image-band.reverse img {
  order: 2;
}

.image-band img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid rgba(245, 247, 250, 0.1);
  box-shadow: 0 24px 70px var(--shadow);
}

.image-band p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.files {
  background: var(--panel);
}

.file-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(245, 247, 250, 0.08);
  border: 1px solid rgba(245, 247, 250, 0.08);
}

.file-list a {
  min-height: 104px;
  display: grid;
  align-content: center;
  gap: 6px;
  padding: 22px;
  background: var(--panel-2);
}

.file-list span {
  font-weight: 800;
  font-size: 18px;
}

.file-list small {
  color: var(--muted);
  font-size: 13px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(18px, 5vw, 72px);
  color: var(--muted);
  background: #0b0f12;
  border-top: 1px solid rgba(245, 247, 250, 0.08);
  font-size: 13px;
}

@media (max-width: 880px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    min-height: 860px;
  }

  .status-strip,
  .split,
  .copy-grid,
  .system-grid,
  .image-band,
  .file-list {
    grid-template-columns: 1fr;
  }

  .image-band.reverse img {
    order: 0;
  }

  footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .brand {
    white-space: normal;
  }

  nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .hero-content {
    margin-bottom: 56px;
  }

  .button {
    width: 100%;
  }
}