:root {
  --ink: #071727;
  --ink-2: #10283c;
  --parchment: #f2e3bf;
  --paper: #fff8e8;
  --paper-2: #ead7aa;
  --gold: #c29a45;
  --gold-soft: rgba(194, 154, 69, 0.22);
  --rust: #a95e3f;
  --muted: #b9c4ca;
  --line: rgba(242, 227, 191, 0.18);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 14% 0%, rgba(194, 154, 69, 0.13), transparent 32rem),
    linear-gradient(180deg, #081828 0%, #071727 38%, #0a1d2c 100%);
  color: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--parchment);
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 20;
  background: var(--parchment);
  color: var(--ink);
  padding: 0.75rem 1rem;
  border-radius: 0.4rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-shell {
  min-height: 100vh;
  overflow: hidden;
}

.topbar {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.brand-mark {
  display: inline-grid;
  gap: 0.1rem;
  text-decoration: none;
}

.brand-mark strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  color: var(--parchment);
}

.brand-mark span {
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.topnav a {
  text-decoration: none;
  color: #edf3f4;
  font-weight: 760;
  padding: 0.55rem 0.72rem;
  border-radius: 999px;
}

.topnav a:hover,
.topnav a:focus {
  background: rgba(255, 255, 255, 0.08);
  outline: none;
}

.section {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.hero {
  width: min(1240px, calc(100% - 2rem));
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 1.14fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(2rem, 5vw, 4.75rem) 0;
}

.eyebrow {
  color: var(--gold);
  font-size: 0.79rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-weight: 900;
  margin: 0 0 0.85rem;
}

h1,
h2,
h3 {
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.02;
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(3.4rem, 8vw, 7.4rem);
  max-width: 9ch;
}

h2 {
  font-size: clamp(2.1rem, 4vw, 4.2rem);
  max-width: 13ch;
}

h3 {
  font-size: clamp(1.22rem, 2vw, 1.65rem);
}

.hero-line {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--gold);
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  margin: 0.8rem 0 1rem;
}

.lead {
  color: #d6e0e3;
  font-size: clamp(1.05rem, 1.6vw, 1.24rem);
  line-height: 1.72;
  max-width: 42rem;
}

.hero-art {
  position: relative;
}

.hero-art img {
  width: 100%;
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(242, 227, 191, 0.22);
  background: #0a1826;
}

.prototype-label {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  background: rgba(7, 23, 39, 0.82);
  color: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.62rem 0.85rem;
  backdrop-filter: blur(10px);
  font-weight: 850;
  font-size: 0.86rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.7rem;
}

.button {
  min-height: 3.05rem;
  border: 1px solid var(--gold);
  border-radius: 999px;
  padding: 0.84rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 900;
  background: var(--gold);
  color: #071727;
  cursor: pointer;
}

.button.secondary {
  background: transparent;
  color: var(--parchment);
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
  outline: none;
  box-shadow: 0 10px 28px rgba(194, 154, 69, 0.22);
}

.notice-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.notice-row div,
.panel,
.card,
.component,
.research-card,
.faq details {
  border: 1px solid var(--line);
  background: rgba(255, 248, 232, 0.055);
  border-radius: 1rem;
}

.notice-row div {
  padding: 1rem;
}

.notice-row strong {
  display: block;
  color: var(--parchment);
}

.notice-row p {
  color: var(--muted);
  margin: 0.35rem 0 0;
  line-height: 1.55;
  font-size: 0.93rem;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.4rem, 4vw, 3.5rem);
  align-items: start;
}

.two-col p,
.copy p,
.copy li {
  color: #d7e0e0;
  line-height: 1.72;
  font-size: 1.03rem;
}

.panel {
  padding: clamp(1.1rem, 3vw, 2rem);
}

.bullet-grid,
.components,
.research-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.bullet-grid div,
.component,
.research-card {
  padding: 1.05rem;
}

.bullet-grid strong,
.component strong,
.research-card strong {
  color: var(--parchment);
  display: block;
  margin-bottom: 0.35rem;
}

.bullet-grid span,
.component span,
.research-card span {
  color: var(--muted);
  line-height: 1.55;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.85rem, 2vw, 1.4rem);
  margin-top: 2rem;
}

.prototype-card {
  background: rgba(7, 23, 39, 0.72);
  border: 1px solid rgba(242, 227, 191, 0.22);
  border-radius: 1rem;
  padding: 0.62rem;
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.22);
}

.prototype-card a {
  display: block;
}

.prototype-card img {
  display: block;
  width: 100%;
  border-radius: 0.72rem;
}

.prototype-card figcaption {
  padding: 0.7rem 0.25rem 0.25rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.prototype-card strong {
  color: var(--paper);
  display: block;
  margin-bottom: 0.1rem;
}

.material-line {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 2rem;
}

.material {
  min-height: 7.8rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 0.85rem;
  background:
    linear-gradient(140deg, rgba(242, 227, 191, 0.11), rgba(255, 255, 255, 0.025)),
    var(--ink-2);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.material .icon {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--gold);
  font-size: 1.8rem;
}

.material strong {
  color: var(--paper);
}

.callout {
  border-left: 4px solid var(--gold);
  background: rgba(194, 154, 69, 0.12);
  padding: 1rem 1.1rem;
  border-radius: 0.7rem;
  color: #e9eef0;
  line-height: 1.65;
}

.product-strip {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(1.3rem, 4vw, 3rem);
  align-items: center;
}

.contact-sheet {
  border-radius: 1rem;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.signup {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.62fr);
  gap: clamp(1.2rem, 4vw, 3rem);
  align-items: start;
  background:
    radial-gradient(circle at 84% 20%, rgba(194, 154, 69, 0.18), transparent 18rem),
    rgba(255, 248, 232, 0.06);
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: clamp(1.3rem, 4vw, 2.4rem);
}

.form-card {
  background: var(--paper);
  color: var(--ink);
  padding: 1.1rem;
  border-radius: 1rem;
}

.field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

label {
  font-weight: 850;
}

input[type="text"],
input[type="email"] {
  width: 100%;
  border: 1px solid #cfbf98;
  border-radius: 0.55rem;
  min-height: 2.8rem;
  padding: 0.72rem 0.8rem;
  font: inherit;
  background: #fffdf7;
  color: var(--ink);
}

.checkbox {
  display: grid;
  grid-template-columns: 1.2rem 1fr;
  gap: 0.55rem;
  align-items: start;
  color: #263a47;
  font-size: 0.92rem;
  line-height: 1.45;
  margin: 0.9rem 0;
}

.form-card .button {
  width: 100%;
}

.form-message {
  min-height: 1.4rem;
  margin: 0.8rem 0 0;
  color: #234432;
  font-weight: 800;
}

.form-message.error {
  color: #8d2f2f;
}

.faq {
  display: grid;
  gap: 0.85rem;
}

.faq details {
  padding: 1rem 1.1rem;
}

.faq summary {
  cursor: pointer;
  color: var(--paper);
  font-weight: 900;
}

.faq p {
  color: var(--muted);
  line-height: 1.65;
}

.footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.research-list {
  display: grid;
  gap: 0.9rem;
  margin-top: 2rem;
}

.research-record {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 248, 232, 0.055);
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 0.35fr) minmax(0, 0.65fr);
  gap: 1rem;
}

.research-record h3 {
  margin-bottom: 0.4rem;
}

.research-record dl {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 0.4rem 0.8rem;
  margin: 0;
}

.research-record dt {
  color: var(--gold);
  font-weight: 900;
}

.research-record dd {
  margin: 0;
  color: #d8e1e2;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  border: 1px solid var(--gold-soft);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  color: var(--parchment);
  background: rgba(194, 154, 69, 0.1);
  font-weight: 800;
  font-size: 0.82rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 980px) {
  .hero,
  .two-col,
  .product-strip,
  .signup {
    grid-template-columns: 1fr;
  }

  .notice-row,
  .bullet-grid,
  .components,
  .research-grid {
    grid-template-columns: 1fr;
  }

  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .material-line {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
  }

  .topnav {
    justify-content: flex-start;
  }

  h1 {
    font-size: clamp(3rem, 18vw, 4.8rem);
  }

  .actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .gallery,
  .material-line,
  .research-record,
  .research-record dl {
    grid-template-columns: 1fr;
  }

  .prototype-label {
    position: static;
    margin-top: 0.8rem;
  }
}