:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-alt: #10151c;
  --text: #111418;
  --muted: #5a6472;
  --line: rgba(17, 20, 24, 0.08);
  --red: #c9252d;
  --red-dark: #8e171d;
  --yellow: #efb82f;
  --offwhite: #f5f2ec;
  --shadow: 0 20px 50px rgba(8, 12, 20, 0.08);
  --radius: 24px;
  --radius-sm: 16px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  line-height: 1.6;
}

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

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

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

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

.site-nav a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--text);
}

.hero {
  padding: 5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: stretch;
}

.hero-copy,
.panel,
.product-card,
.detail-card,
.scene-card,
.impact-card,
.company-card,
.system-feature-card,
.product-visual-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.panel {
  padding: 1.25rem;
}

.hero-image {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  border-radius: calc(var(--radius) - 8px);
  display: block;
}

.section-image {
  width: 100%;
  min-height: 220px;
  object-fit: cover;
  border-radius: calc(var(--radius) - 8px);
  display: block;
  margin-top: 1.25rem;
}

.eyebrow,
.section-label,
.product-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 800;
}

.eyebrow,
.section-label {
  color: var(--red);
}

.hero h1,
.section h2,
.site-footer h2 {
  margin: 0.4rem 0 0.8rem;
  line-height: 1.02;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5rem);
}

.lead {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: 44rem;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.2rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.button-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
}

.button-secondary {
  border: 1px solid var(--line);
  background: #ffffff;
}

.section {
  padding: 1.2rem 0 3rem;
}

.section-intro,
.section-head,
.company-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-copy {
  max-width: 56rem;
}

.section-subhead {
  max-width: 30rem;
  color: var(--muted);
  margin: 0.25rem 0 0;
}

.card-grid,
.detail-grid,
.impact-grid,
.product-visual-grid {
  display: grid;
  gap: 1.25rem;
}

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

.impact-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-visual-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1.5rem;
}

.product-card,
.detail-card,
.scene-card,
.impact-card,
.company-card,
.product-visual-card {
  padding: 1.5rem;
}

.product-badge {
  color: var(--red);
  margin-bottom: 0.75rem;
}

.product-badge-muted {
  color: #6a7180;
}

.feature-list {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  color: var(--muted);
}

.feature-list li + li {
  margin-top: 0.45rem;
}

.product-page-link {
  margin-top: 1.25rem;
}

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

.product-card-featured {
  grid-column: span 1;
}

.product-card-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: calc(var(--radius) - 10px);
  border: 1px solid var(--line);
  margin: 0.85rem 0 1rem;
  background: #fff;
}

.system-band {
  padding-top: 0.5rem;
}

.architecture {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #12161d 0%, #0c1016 100%);
  box-shadow: var(--shadow);
}

.arch-node,
.arch-arrow {
  color: #f2f4f7;
}

.arch-node {
  padding: 0.85rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.arch-arrow {
  font-size: 1.25rem;
  opacity: 0.72;
}

.system-feature-card {
  padding: 1.75rem;
}

.system-feature-lead {
  max-width: 60rem;
  color: var(--muted);
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
}

.system-feature-image {
  width: 100%;
  border-radius: calc(var(--radius) - 8px);
  display: block;
  margin: 1rem 0 1.5rem;
}

.system-callouts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.callout-item {
  background: #f8f9fb;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.callout-item h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
}

.callout-item p {
  margin: 0;
  color: var(--muted);
}

.operation {
  background: linear-gradient(180deg, #131922 0%, #0d1218 100%);
  color: #f0f3f7;
  padding: 3rem 0;
  margin-top: 1rem;
}

.operation .section-subhead,
.operation p,
.operation .feature-list,
.operation .site-nav a {
  color: rgba(240, 243, 247, 0.76);
}

.operation .scene-card {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

.company-ip {
  padding-top: 3rem;
}

.company-grid {
  align-items: stretch;
}

.company-grid > * {
  flex: 1;
}

.placeholder,
.product-placeholder-hero,
.visual-placeholder {
  border: 1px dashed rgba(17, 20, 24, 0.18);
  border-radius: calc(var(--radius) - 8px);
  background:
    linear-gradient(135deg, rgba(201, 37, 45, 0.08), rgba(239, 184, 47, 0.06)),
    linear-gradient(180deg, #ffffff 0%, #f5f7fb 100%);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-weight: 700;
}

.placeholder {
  min-height: 260px;
}

.product-placeholder-hero {
  min-height: 420px;
  height: 100%;
}

.visual-placeholder {
  min-height: 260px;
  margin: 1rem 0 1rem;
}

.placeholder-hero {
  min-height: 420px;
}

.placeholder-card {
  min-height: 220px;
  margin-top: 1.25rem;
}

.placeholder-scene {
  min-height: 240px;
  margin-bottom: 1rem;
  background:
    linear-gradient(135deg, rgba(201, 37, 45, 0.16), rgba(239, 184, 47, 0.08)),
    linear-gradient(180deg, #151d25 0%, #0e1318 100%);
  border-color: rgba(255, 255, 255, 0.12);
}

.placeholder span,
.product-placeholder-hero span {
  display: block;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.placeholder small {
  display: block;
  margin-top: 0.4rem;
  color: var(--muted);
}

.operation .placeholder span,
.operation .placeholder small {
  color: #f0f3f7;
}

.scene-card h3,
.impact-card h3,
.product-card h3,
.detail-card h3,
.company-card h3,
.product-visual-card h3 {
  margin-top: 0.2rem;
  margin-bottom: 0.6rem;
}

.abstract-grid-custom .impact-card {
  position: relative;
  overflow: hidden;
}

.abstract-shf-card {
  background-image: url("specs.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 280px;
}

.abstract-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.92) 0%,
    rgba(255, 255, 255, 0.88) 100%
  );
  z-index: 1;
}

.abstract-card-content {
  position: relative;
  z-index: 2;
}

.site-footer {
  padding: 2.5rem 0 4rem;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.site-footer p {
  color: var(--muted);
  margin: 0.25rem 0 0;
}

@media (max-width: 980px) {
  .hero-grid,
  .card-grid,
  .detail-grid,
  .impact-grid,
  .footer-grid,
  .system-callouts,
  .product-visual-grid,
  .product-platform-grid {
    grid-template-columns: 1fr;
  }

  .section-intro,
  .section-head,
  .company-grid {
    flex-direction: column;
  }

  .hero {
    padding-top: 3rem;
  }
}

@media (max-width: 720px) {
  .header-inner {
    min-height: auto;
    padding: 1rem 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    gap: 0.75rem;
  }

  .hero-copy,
  .panel,
  .product-card,
  .detail-card,
  .scene-card,
  .impact-card,
  .company-card,
  .system-feature-card,
  .product-visual-card {
    padding: 1.2rem;
  }

  .architecture {
    gap: 0.5rem;
  }

  .arch-node {
    width: 100%;
    border-radius: 16px;
  }

  .arch-arrow {
    width: 100%;
    text-align: center;
  }

  .product-placeholder-hero,
  .hero-image {
    min-height: 280px;
  }

  .visual-placeholder {
    min-height: 200px;
  }

  .product-card-thumb {
    height: 150px;
  }

  .abstract-shf-card {
    min-height: 220px;
  }
}