:root {
  --bg: #080808;
  --bg-card: #101010;
  --bg-raised: #151515;
  --border: #242424;
  --border-bright: #3a3a3a;
  --text: #f1f1f1;
  --text-sub: #b1b1b1;
  --text-dim: #777;
  --accent: #fbd23a;
  --accent-hover: #ffe56a;
  --accent-soft: rgba(251, 210, 58, 0.09);
  --max: 1080px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Yu Gothic", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.016) 1px, transparent 1px);
  background-size: 52px 52px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 8px 14px;
  border-radius: 8px;
  color: #111;
  background: var(--accent);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(8, 8, 8, 0.92);
}

.site-header__inner {
  width: min(var(--max), calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--text);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.brand strong {
  color: var(--accent);
  font-size: 1.08rem;
}

.brand span {
  color: var(--text-dim);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.site-header nav {
  display: flex;
  gap: 18px;
  font-size: 0.84rem;
}

main {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding-bottom: 112px;
}

.breadcrumb {
  padding: 28px 0 10px;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: #4c4c4c;
}

.product-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 56px;
  align-items: center;
  padding: 72px 0 84px;
}

.product-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 80% 45%, rgba(251, 210, 58, 0.11), transparent 35%);
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: "Noto Serif JP", serif;
}

h1 {
  max-width: 780px;
  font-size: clamp(2.35rem, 6vw, 4.9rem);
  line-height: 1.1;
  letter-spacing: -0.045em;
}

h1 em {
  color: var(--accent);
  font-style: normal;
}

.lead {
  max-width: 720px;
  margin-top: 24px;
  color: var(--text-sub);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.hero-badges,
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-badges {
  margin-top: 22px;
}

.badge {
  padding: 4px 10px;
  border: 1px solid var(--border-bright);
  border-radius: 999px;
  color: var(--text-sub);
  font-size: 0.72rem;
}

.cta-row {
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid rgba(251, 210, 58, 0.48);
  border-radius: 9px;
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 800;
  transition: 0.16s ease;
}

.button:hover {
  color: #111;
  border-color: var(--accent);
  background: var(--accent);
}

.button--primary {
  color: #111;
  border-color: var(--accent);
  background: var(--accent);
}

.button--primary:hover {
  background: var(--accent-hover);
}

.product-icon {
  display: block;
  width: clamp(150px, 20vw, 220px);
  height: auto;
  border: 1px solid var(--border-bright);
  border-radius: 28%;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
}

.local-promise {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  padding: 28px 30px;
  border: 1px solid rgba(251, 210, 58, 0.28);
  border-radius: 16px;
  background: var(--accent-soft);
}

.local-promise__mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 50%;
  color: #111;
  background: var(--accent);
  font-weight: 900;
}

.local-promise h2 {
  margin-bottom: 8px;
  font-size: 1.3rem;
}

.local-promise p {
  color: var(--text-sub);
  font-size: 0.93rem;
}

.section {
  padding-top: 88px;
}

.section__head {
  max-width: 720px;
  margin-bottom: 32px;
}

.section h2 {
  margin-bottom: 10px;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  line-height: 1.25;
}

.section__intro {
  color: var(--text-sub);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
}

.card__number {
  display: block;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.card h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.card p,
.card li {
  color: var(--text-sub);
  font-size: 0.88rem;
}

.card ul {
  margin-top: 10px;
  padding-left: 1.2em;
}

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

.feature {
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(145deg, var(--bg-raised), var(--bg-card));
}

.feature h3 {
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.feature p {
  color: var(--text-sub);
  font-size: 0.9rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-card);
}

.spec-table th,
.spec-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.spec-table th {
  width: 28%;
  color: var(--text);
  font-size: 0.86rem;
}

.spec-table td {
  color: var(--text-sub);
  font-size: 0.88rem;
}

.link-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg-card);
}

.link-panel + .link-panel {
  margin-top: 14px;
}

.link-panel h3 {
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.link-panel p {
  color: var(--text-sub);
  font-size: 0.88rem;
}

.faq {
  border-top: 1px solid var(--border);
}

.faq details {
  border-bottom: 1px solid var(--border);
}

.faq summary {
  position: relative;
  padding: 20px 42px 20px 0;
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  position: absolute;
  top: 18px;
  right: 8px;
  color: var(--accent);
  font-size: 1.25rem;
}

.faq details[open] summary::after {
  content: "−";
}

.faq p {
  max-width: 820px;
  padding: 0 44px 22px 0;
  color: var(--text-sub);
  font-size: 0.9rem;
}

.final-cta {
  margin-top: 88px;
  padding: 42px 30px;
  border: 1px solid rgba(251, 210, 58, 0.35);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(251, 210, 58, 0.12), rgba(251, 210, 58, 0.025));
  text-align: center;
}

.final-cta h2 {
  margin-bottom: 8px;
  font-size: clamp(1.65rem, 4vw, 2.5rem);
}

.final-cta p {
  color: var(--text-sub);
}

.final-cta .cta-row {
  justify-content: center;
}

.site-footer {
  padding: 42px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  text-align: center;
  font-size: 0.76rem;
}

.site-footer strong {
  color: var(--accent);
}

@media (max-width: 820px) {
  .product-hero {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 54px 0 66px;
  }

  .product-icon {
    grid-row: 1;
    width: 132px;
  }

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

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

@media (max-width: 620px) {
  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 15px 0;
  }

  .site-header nav {
    gap: 14px;
  }

  main {
    width: min(var(--max), calc(100% - 30px));
  }

  h1 {
    font-size: clamp(2.15rem, 12vw, 3.2rem);
  }

  .local-promise {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .section {
    padding-top: 66px;
  }

  .link-panel {
    grid-template-columns: 1fr;
  }

  .spec-table,
  .spec-table tbody,
  .spec-table tr,
  .spec-table th,
  .spec-table td {
    display: block;
    width: 100%;
  }

  .spec-table th {
    padding-bottom: 2px;
    border-bottom: 0;
  }

  .spec-table td {
    padding-top: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}