:root {
  --bg: #f6fbff;
  --surface: #ffffff;
  --surface-muted: #eef7ff;
  --border: #cfe0ee;
  --text: #123047;
  --muted: #58748c;
  --accent: #0ea5e9;
  --accent-strong: #0369a1;
  --success: #0f9f6e;
  --shadow: 0 18px 50px rgba(18, 48, 71, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #f8fcff 0%, #ecf8ff 100%);
  color: var(--text);
}

body {
  margin: 0;
}

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

.page-shell {
  min-height: 100vh;
}

.container {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
}

.site-header {
  padding-top: 18px;
}

.header-card,
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.header-card {
  padding: 16px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav {
  display: flex;
  gap: 16px;
  color: var(--muted);
}

.brand {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero {
  padding: 56px 0 32px;
}

.detail-layout {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 24px;
  align-items: start;
}

.hero-surface,
.detail-card {
  padding: 28px;
}

.hero-surface {
  background:
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.16), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, #f4fbff 100%);
}

.hero-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-subtle {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-kicker,
.section-kicker {
  display: inline-flex;
  padding: 8px 12px;
  background: var(--surface-muted);
  border-radius: 999px;
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero h1,
.page-title {
  margin: 16px 0 12px;
  font-size: clamp(2.5rem, 6vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.copy {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.6;
}

.hero-actions,
.actions,
.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  font-weight: 700;
  background: #fff;
  cursor: pointer;
}

.button-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.price-list,
.gpu-grid,
.alert-box {
  display: grid;
  gap: 14px;
}

.hero-sku-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 26px 0 0;
}

.hero-sku-card {
  display: grid;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 24px rgba(18, 48, 71, 0.06);
}

.hero-sku-card:hover {
  border-color: #9fcbe4;
}

.hero-sku-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  object-position: center;
  border-radius: 16px;
  background: linear-gradient(180deg, #f8fcff 0%, #edf7ff 100%);
  padding: 10px;
}

.hero-sku-name {
  font-size: clamp(1.3rem, 2.8vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.hero-sku-price {
  font-size: clamp(1.15rem, 2.4vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero-sku-meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-empty {
  padding: 24px;
  border: 1px dashed var(--border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
}

.retailer-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.retailer-pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 700;
}

.retailer-pill-link:hover {
  background: var(--surface-muted);
}

.price-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 18px;
}

.status {
  color: var(--success);
  font-weight: 700;
  font-size: 0.92rem;
}

.section {
  padding: 20px 0 56px;
}

.section-header {
  margin-bottom: 18px;
}

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

.gpu-card {
  padding: 22px;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.detail-layout {
  padding: 40px 0 64px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
}

.table th,
.table td {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.alert-box input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  font: inherit;
}

.alert-option {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.site-footer {
  padding-bottom: 48px;
}

.footer-card {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.footer-brand {
  max-width: 640px;
}

.footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
}

.footer-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 10px;
}

.footer-note {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content: flex-end;
  gap: 14px 18px;
  min-width: 240px;
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--accent-strong);
}

.legal-layout {
  padding: 40px 0 64px;
}

.legal-card {
  padding: 32px;
}

.legal-updated {
  margin-top: -4px;
}

.legal-sections {
  display: grid;
  gap: 28px;
  margin-top: 24px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.support-panel {
  padding: 20px;
}

.legal-section h2 {
  margin: 0 0 12px;
  font-size: 1.15rem;
}

.callout-card {
  padding: 18px;
  border-radius: 18px;
}

@media (max-width: 900px) {
  .detail-layout,
  .gpu-grid,
  .hero-sku-grid {
    grid-template-columns: 1fr;
  }

  .header-card {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .footer-card,
  .footer-links {
    flex-direction: column;
    align-items: flex-start;
  }

  .support-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 28px;
  }
}