:root {
  --accent: #d97706;
  --accent-deep: #b45309;
  --ink: #0b0d10;
  --charcoal: #14181f;
  --steel: #232933;
  --mist: #a8b0bd;
  --snow: #f3f5f7;
  --line: rgba(243, 245, 247, 0.12);
  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Source Sans 3", "Helvetica Neue", sans-serif;
  --max: 1180px;
  --header-h: 4.25rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--snow);
  background: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 16, 0.92);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--snow);
}

.nav-cta {
  padding: 0.55rem 1rem;
  border: 1px solid var(--accent);
  color: var(--snow) !important;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-cta:hover {
  background: var(--accent);
  color: var(--ink) !important;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--snow);
  padding: 0.4rem 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.7rem;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 55% at 75% 35%, rgba(217, 119, 6, 0.22), transparent 55%),
    linear-gradient(125deg, #0b0d10 0%, #161b24 50%, #0b0d10 100%);
}

.hero-visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-visual img,
.hero-visual svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto 4.5rem;
  animation: riseIn 0.9s ease both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 5.8rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 0.95;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.hero-brand span {
  display: block;
  color: var(--accent);
}

.hero-lead {
  max-width: 32rem;
  margin: 0 0 1.75rem;
  color: var(--mist);
  font-size: 1.05rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.4rem;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease,
    transform 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--accent-deep);
  color: var(--snow);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--snow);
}

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

.section {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  padding: 4.5rem 0;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
  line-height: 1.1;
}

.section-copy {
  max-width: 38rem;
  color: var(--mist);
  margin: 0 0 2.5rem;
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.brand-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 11rem;
  padding: 1.25rem;
  background: var(--charcoal);
  border: 1px solid var(--line);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.brand-card:hover {
  border-color: rgba(217, 119, 6, 0.55);
  transform: translateY(-3px);
}

.brand-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
}

.brand-card p {
  margin: 0;
  color: var(--mist);
  font-size: 0.85rem;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.model-tile {
  position: relative;
  display: block;
  min-height: 16rem;
  padding: 1.15rem;
  background: var(--charcoal);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.model-tile:hover {
  border-color: rgba(217, 119, 6, 0.55);
  transform: translateY(-3px);
}

.model-tile-visual {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  transition: opacity 0.3s ease, transform 0.5s ease;
}

.model-tile:hover .model-tile-visual {
  opacity: 0.55;
  transform: scale(1.04);
}

.model-tile-visual svg,
.model-tile-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.model-tile-body {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.model-tile h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 0.3rem;
}

.model-tile p {
  margin: 0 0 0.85rem;
  color: var(--mist);
  font-size: 0.88rem;
}

.brand-block {
  margin-bottom: 3.5rem;
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.brand-block:last-child {
  margin-bottom: 0;
}

.brand-block-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.brand-block-head h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
}

.brand-block-head a {
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-banner {
  padding: 3.5rem 0 1rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(217, 119, 6, 0.1), transparent 70%),
    var(--ink);
}

.page-banner .section {
  padding-top: 0;
  padding-bottom: 2rem;
}

.detail-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: start;
}

.detail-media {
  min-height: 22rem;
  background: var(--charcoal);
  border: 1px solid var(--line);
  overflow: hidden;
}

.detail-media svg,
.detail-media img {
  width: 100%;
  height: 100%;
  min-height: 22rem;
  object-fit: cover;
}

.spec-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  border-top: 1px solid var(--line);
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.spec-list span:first-child {
  color: var(--mist);
}

.price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  margin: 0 0 1.25rem;
}

.form-shell {
  max-width: 32rem;
  margin: 0 auto;
  padding: 2rem;
  background: var(--charcoal);
  border: 1px solid var(--line);
}

.form-shell.wide {
  max-width: 44rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-grid.two {
  grid-template-columns: 1fr 1fr;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  background: var(--ink);
  border: 1px solid var(--line);
  outline: none;
  transition: border-color 0.2s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
}

.form-note {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  color: var(--mist);
}

.form-note a {
  color: var(--snow);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-message {
  display: none;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(217, 119, 6, 0.45);
  background: rgba(217, 119, 6, 0.12);
  font-size: 0.9rem;
}

.form-message.is-visible {
  display: block;
  animation: riseIn 0.35s ease both;
}

.checkout-summary {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.checkout-summary h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.35rem 0;
  color: var(--mist);
  font-size: 0.95rem;
}

.summary-row.total {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
  color: var(--snow);
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  padding: 2.5rem 0 3rem;
}

.footer-inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  color: var(--mist);
  font-size: 0.85rem;
}

.footer-brand {
  font-family: var(--font-display);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--snow);
  margin-bottom: 0.5rem;
}

.demo-banner {
  background: var(--accent-deep);
  color: var(--snow);
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1) translateX(0);
  }
  to {
    transform: scale(1.06) translateX(-2%);
  }
}

@media (max-width: 1100px) {
  .brand-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(11, 13, 16, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 0;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.9rem 1.25rem;
  }

  .brand-grid,
  .model-grid,
  .detail-layout,
  .form-grid.two {
    grid-template-columns: 1fr;
  }

  .detail-media,
  .detail-media svg,
  .detail-media img {
    min-height: 16rem;
  }
}