:root {
  --ink: #161a1c;
  --deep: #1a1a2e;
  --cream: #f7f4ef;
  --paper: #fdfbf8;
  --gold: #b07d4b;
  --gold-light: #d4a574;
  --line: rgba(22, 26, 28, 0.13);
  --serif: "Noto Serif SC", serif;
  --sans: "DM Sans", "PingFang SC", sans-serif;
  --mono: "JetBrains Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--cream);
  color: var(--ink);
}

body {
  font-family: var(--sans);
}

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

.cover {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding: 0 clamp(24px, 5vw, 78px) 24px;
  background:
    linear-gradient(90deg, rgba(176, 125, 75, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(176, 125, 75, 0.04) 1px, transparent 1px),
    radial-gradient(circle at 73% 20%, rgba(212, 165, 116, 0.11), transparent 30%),
    var(--cream);
  background-size: 68px 68px, 68px 68px, auto, auto;
}

.cover-grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.24;
  background-image: radial-gradient(rgba(22, 26, 28, 0.2) 0.55px, transparent 0.7px);
  background-size: 5px 5px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

.cover-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(2px);
}

.cover-orb-one {
  width: 460px;
  height: 460px;
  right: -190px;
  top: -210px;
  border: 1px solid rgba(176, 125, 75, 0.18);
  box-shadow: inset 0 0 90px rgba(212, 165, 116, 0.06);
}

.cover-orb-two {
  width: 210px;
  height: 210px;
  right: 31%;
  top: 15%;
  border: 1px solid rgba(176, 125, 75, 0.11);
}

.cover-nav {
  position: relative;
  z-index: 2;
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.cover-brand {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.cover-brand span {
  display: inline-grid;
  place-items: center;
  width: 31px;
  height: 31px;
  margin-right: 10px;
  border-radius: 50%;
  color: white;
  background: var(--deep);
  font: 500 10px/1 var(--mono);
}

.cover-links {
  display: flex;
  gap: 28px;
  color: rgba(22, 26, 28, 0.62);
  font-size: 12px;
}

.cover-links a {
  transition: color 0.25s ease;
}

.cover-links a:hover {
  color: var(--gold);
}

.cover-stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.75fr);
  gap: clamp(44px, 7vw, 110px);
  align-items: center;
  min-height: 475px;
  padding: clamp(44px, 6.5vh, 72px) 0 38px;
}

.cover-eyebrow {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 22px;
  color: var(--gold);
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.19em;
  text-transform: uppercase;
}

.cover-eyebrow i {
  width: 30px;
  height: 1px;
  background: var(--gold-light);
}

.cover-copy h1 {
  margin: 0;
  font: 900 clamp(52px, 7.2vw, 106px)/0.98 var(--serif);
  letter-spacing: -0.06em;
}

.cover-copy h1 em {
  color: var(--gold);
  font-style: normal;
}

.cover-subtitle {
  margin: 24px 0 0;
  font: 600 clamp(18px, 2.1vw, 28px)/1.65 var(--serif);
  letter-spacing: -0.02em;
}

.cover-subtitle strong {
  color: var(--gold);
  font-weight: 700;
}

.cover-lead {
  max-width: 720px;
  margin: 16px 0 0;
  color: rgba(22, 26, 28, 0.58);
  font-size: 13px;
  font-weight: 300;
  line-height: 1.95;
}

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

.cover-primary,
.cover-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 999px;
  padding: 0 22px;
  font-size: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.cover-primary {
  gap: 24px;
  color: white;
  background: var(--deep);
  box-shadow: 0 12px 34px rgba(26, 26, 46, 0.16);
}

.cover-secondary {
  border: 1px solid rgba(22, 26, 28, 0.15);
  background: rgba(255, 255, 255, 0.38);
}

.cover-primary:hover,
.cover-secondary:hover {
  transform: translateY(-2px);
}

.cover-secondary:hover {
  border-color: rgba(176, 125, 75, 0.5);
}

.cover-system {
  position: relative;
  align-self: stretch;
  min-height: 330px;
  overflow: hidden;
  border: 1px solid rgba(212, 165, 116, 0.24);
  border-radius: 26px;
  padding: 26px;
  color: white;
  background:
    radial-gradient(circle at 100% 0%, rgba(212, 165, 116, 0.22), transparent 39%),
    linear-gradient(150deg, #24233b 0%, var(--deep) 66%);
  box-shadow: 0 28px 80px rgba(26, 26, 46, 0.17);
}

.cover-system::after {
  content: "";
  position: absolute;
  width: 230px;
  height: 230px;
  right: -100px;
  bottom: -120px;
  border: 1px solid rgba(212, 165, 116, 0.24);
  border-radius: 50%;
}

.system-index {
  color: rgba(255, 255, 255, 0.38);
  font: 400 9px/1 var(--mono);
  letter-spacing: 0.17em;
}

.system-core {
  margin-top: 45px;
}

.system-kicker {
  display: block;
  color: var(--gold-light);
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.19em;
}

.system-core strong {
  display: block;
  margin-top: 13px;
  font: 700 clamp(22px, 2.6vw, 34px)/1.45 var(--serif);
}

.system-core p {
  max-width: 310px;
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.56);
  font-size: 12px;
  line-height: 1.8;
}

.system-traits {
  position: absolute;
  z-index: 1;
  left: 26px;
  right: 26px;
  bottom: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 17px;
}

.system-traits div {
  display: grid;
  gap: 5px;
}

.system-traits b {
  color: var(--gold-light);
  font: 500 9px/1 var(--mono);
  letter-spacing: 0.13em;
}

.system-traits span {
  color: rgba(255, 255, 255, 0.66);
  font-size: 10px;
}

.cover-catalog {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.catalog-card {
  position: relative;
  min-height: 150px;
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 13px;
  align-items: start;
  padding: 22px 22px 20px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.24);
  transition: background 0.35s ease, transform 0.35s ease;
}

.catalog-card:last-child {
  border-right: 0;
}

.catalog-card:hover {
  z-index: 2;
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.74);
}

.catalog-card-primary {
  background: rgba(176, 125, 75, 0.08);
}

.catalog-no {
  color: var(--gold);
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.1em;
}

.catalog-card small {
  color: rgba(22, 26, 28, 0.4);
  font: 400 8px/1.2 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.catalog-card h2 {
  margin: 9px 0 6px;
  font: 700 16px/1.4 var(--serif);
}

.catalog-card p {
  margin: 0;
  color: rgba(22, 26, 28, 0.53);
  font-size: 10.5px;
  line-height: 1.65;
}

.catalog-card i {
  color: var(--gold);
  font-style: normal;
  font-size: 16px;
}

.cover-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  padding-top: 18px;
  color: rgba(22, 26, 28, 0.34);
  font: 400 8px/1 var(--mono);
  letter-spacing: 0.12em;
}

@media (max-width: 980px) {
  .cover {
    overflow: auto;
  }

  .cover-links {
    display: none;
  }

  .cover-stage {
    grid-template-columns: 1fr;
  }

  .cover-system {
    min-height: 340px;
  }

  .cover-catalog {
    grid-template-columns: 1fr 1fr;
  }

  .catalog-card:nth-child(2) {
    border-right: 0;
  }

  .catalog-card:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  .cover {
    padding-inline: 20px;
  }

  .cover-nav {
    height: 64px;
  }

  .cover-stage {
    gap: 32px;
    padding-top: 40px;
  }

  .cover-copy h1 {
    font-size: clamp(46px, 15vw, 67px);
  }

  .cover-subtitle {
    font-size: 18px;
  }

  .cover-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .cover-system {
    min-height: 370px;
  }

  .cover-catalog {
    grid-template-columns: 1fr;
  }

  .catalog-card,
  .catalog-card:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .catalog-card:last-child {
    border-bottom: 0;
  }

  .cover-footer {
    gap: 12px;
    flex-direction: column;
    line-height: 1.5;
  }
}