:root {
  --bg: #071115;
  --bg-soft: #0d1b21;
  --surface: rgba(12, 25, 31, 0.86);
  --surface-strong: rgba(18, 34, 42, 0.94);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f4efe5;
  --muted: #a7b8b5;
  --gold: #d8a24c;
  --gold-soft: rgba(216, 162, 76, 0.16);
  --mint: #75d0c2;
  --mint-soft: rgba(117, 208, 194, 0.15);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --content: min(1180px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Noto Sans JP", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(117, 208, 194, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(216, 162, 76, 0.18), transparent 22%),
    linear-gradient(180deg, #04090c 0%, #081317 28%, #071115 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at center, black 42%, transparent 90%);
  opacity: 0.45;
}

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

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

.page-shell {
  position: relative;
  width: var(--content);
  margin: 0 auto;
  padding-bottom: 48px;
}

.site-header {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  margin: 20px auto 0;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 17, 21, 0.72);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.brand-lockup img {
  width: 34px;
  height: 34px;
}

.site-header-controls {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  flex: 1;
  flex-wrap: wrap;
}

.site-nav {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 0.88rem;
  color: var(--muted);
}

.site-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  transform: translateY(-1px);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.lang-switch a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.lang-switch a:hover,
.lang-switch a.is-active {
  background: rgba(117, 208, 194, 0.14);
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 28px;
  padding: 84px 0 42px;
  align-items: stretch;
}

.launch-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 16px 20px;
  border: 1px solid rgba(117, 208, 194, 0.26);
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(117, 208, 194, 0.14), transparent 38%),
    rgba(9, 19, 23, 0.84);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.launch-label {
  margin: 0;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(117, 208, 194, 0.14);
  color: var(--mint);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.launch-copy {
  margin: 0;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.7;
}

.hero-copy,
.panel-frame,
.info-card,
.product-card,
.journey-card,
.matrix-card,
.metric-card,
.faq-list details,
.cta-block {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-copy {
  position: relative;
  overflow: hidden;
  padding: 42px;
  border-radius: var(--radius-lg);
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(216, 162, 76, 0.55), transparent 35%),
    radial-gradient(circle at 70% 70%, rgba(117, 208, 194, 0.38), transparent 40%);
  opacity: 0.8;
  filter: blur(6px);
}

.eyebrow {
  margin: 0 0 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  letter-spacing: -0.05em;
}

h2 {
  font-size: clamp(2rem, 3vw, 3.3rem);
  letter-spacing: -0.04em;
  max-width: 16ch;
}

h3 {
  font-size: 1.35rem;
}

.hero-lead,
.product-card p,
.journey-card li,
.matrix-card td,
.matrix-card th,
.metrics-note,
.faq-list p,
.cta-block p,
.site-footer p {
  color: var(--muted);
}

.hero-lead {
  position: relative;
  z-index: 1;
  max-width: 58ch;
  margin: 22px 0 0;
  font-size: 1.02rem;
  line-height: 1.9;
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #091013;
  background: linear-gradient(135deg, #f0c16c, #d39c44);
}

.button-secondary {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
}

.signal-row {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.signal-row li {
  padding: 10px 14px;
  border: 1px solid rgba(117, 208, 194, 0.22);
  border-radius: 999px;
  background: var(--mint-soft);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text);
}

.hero-panel {
  display: flex;
}

.panel-frame {
  width: 100%;
  padding: 24px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(14, 26, 32, 0.95), rgba(10, 20, 25, 0.9)),
    radial-gradient(circle at top right, rgba(117, 208, 194, 0.16), transparent 34%);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.brand-ladder {
  display: grid;
  gap: 14px;
}

.brand-ladder article {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
}

.brand-ladder small {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--gold);
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.12em;
}

.brand-ladder strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.brand-ladder p {
  margin: 0;
  line-height: 1.7;
  color: var(--muted);
}

.section {
  padding: 44px 0;
}

.section-title {
  margin-bottom: 22px;
}

.section-intro {
  max-width: 62ch;
  margin: 14px 0 0;
  line-height: 1.85;
  color: var(--muted);
}

.philosophy-grid,
.selector-grid,
.compare-grid,
.product-grid,
.architecture-grid,
.metric-grid {
  display: grid;
  gap: 18px;
}

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

.selector-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.selector-card,
.compare-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(18, 27, 32, 0.94), rgba(11, 18, 22, 0.94)),
    linear-gradient(135deg, rgba(117, 208, 194, 0.08), transparent 52%);
}

.selector-card-featured,
.compare-card-featured {
  background:
    linear-gradient(180deg, rgba(25, 31, 35, 0.95), rgba(13, 20, 24, 0.95)),
    linear-gradient(135deg, rgba(216, 162, 76, 0.16), transparent 56%);
}

.route-tag {
  margin: 0 0 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.route-ask {
  margin: 10px 0 0;
  font-weight: 700;
  color: var(--text);
}

.selector-card p,
.compare-card p,
.compare-note {
  line-height: 1.82;
  color: var(--muted);
}

.selector-card ul,
.compare-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
}

.selector-card li,
.compare-card li {
  margin-top: 10px;
  line-height: 1.72;
}

.compare-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.compare-matrix {
  grid-column: 1 / -1;
}

.compare-note {
  margin: 18px 0 0;
}

.info-card {
  padding: 28px;
  border-radius: var(--radius-md);
}

.info-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--gold-soft);
  color: var(--gold);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.info-card p {
  margin: 12px 0 0;
  line-height: 1.9;
  color: var(--muted);
}

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

.product-card {
  padding: 28px;
  border-radius: var(--radius-md);
}

.card-top {
  margin-bottom: 18px;
}

.product-tier {
  margin: 0 0 10px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.product-subtitle {
  margin: 8px 0 0;
  color: var(--text);
  opacity: 0.82;
}

.product-card p {
  margin: 0;
  line-height: 1.85;
}

.product-card ul,
.cta-block ul {
  margin: 18px 0 0;
  padding-left: 18px;
}

.product-card li,
.cta-block li {
  margin-top: 10px;
  line-height: 1.7;
}

.product-core {
  background:
    linear-gradient(180deg, rgba(23, 32, 37, 0.9), rgba(13, 22, 27, 0.92)),
    linear-gradient(135deg, rgba(216, 162, 76, 0.12), transparent 50%);
}

.product-lite {
  background:
    linear-gradient(180deg, rgba(16, 28, 32, 0.92), rgba(9, 18, 22, 0.92)),
    linear-gradient(135deg, rgba(117, 208, 194, 0.14), transparent 52%);
}

.product-entry {
  background:
    linear-gradient(180deg, rgba(17, 24, 35, 0.94), rgba(10, 16, 23, 0.94)),
    linear-gradient(135deg, rgba(132, 163, 255, 0.13), transparent 54%);
}

.product-specialist {
  background:
    linear-gradient(180deg, rgba(25, 21, 35, 0.94), rgba(11, 12, 20, 0.94)),
    linear-gradient(135deg, rgba(231, 121, 177, 0.12), transparent 56%);
}

.architecture-grid {
  grid-template-columns: 0.85fr 0.85fr 1.3fr;
  align-items: start;
}

.journey-card,
.matrix-card {
  padding: 26px;
  border-radius: var(--radius-md);
}

.journey-card ol {
  margin: 18px 0 0;
  padding-left: 20px;
}

.journey-card li {
  margin-top: 12px;
  line-height: 1.8;
}

.matrix-card table {
  width: 100%;
  border-collapse: collapse;
}

.matrix-card th,
.matrix-card td {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.matrix-card th {
  color: var(--text);
  font-size: 0.92rem;
}

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

.metric-card {
  padding: 26px;
  border-radius: var(--radius-md);
}

.metric-pairs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.metric-pairs p {
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.metric-pairs strong {
  display: block;
  margin-bottom: 6px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
  line-height: 1;
}

.metric-pairs span {
  font-size: 0.82rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.metric-card small {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.metrics-note {
  margin: 18px 0 0;
  line-height: 1.85;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 700;
  list-style: none;
}

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

.faq-list p {
  margin: 0;
  padding: 0 22px 20px;
  line-height: 1.85;
}

.cta-block {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(216, 162, 76, 0.12), transparent 42%),
    linear-gradient(180deg, rgba(14, 26, 32, 0.94), rgba(10, 18, 21, 0.94));
}

.cta-block p {
  margin: 14px 0 0;
  line-height: 1.85;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 28px 0 10px;
  font-size: 0.92rem;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms ease, transform 650ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero,
  .architecture-grid,
  .cta-block {
    grid-template-columns: 1fr;
  }

  .launch-strip {
    grid-template-columns: 1fr;
  }

  .philosophy-grid,
  .selector-grid,
  .compare-grid,
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100vw - 24px, 100%);
  }

  .site-header {
    position: static;
    margin-top: 12px;
    border-radius: 26px;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header-controls {
    width: 100%;
    justify-content: space-between;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 30px;
  }

  .hero-copy,
  .panel-frame,
  .selector-card,
  .compare-card,
  .info-card,
  .product-card,
  .journey-card,
  .matrix-card,
  .metric-card,
  .cta-block {
    padding: 22px;
  }

  .philosophy-grid,
  .selector-grid,
  .compare-grid,
  .product-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

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

  .matrix-card {
    overflow-x: auto;
  }

  .matrix-card table {
    min-width: 520px;
  }
}

@media (max-width: 560px) {
  :root {
    --content: calc(100vw - 18px);
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .site-header {
    padding: 14px;
  }

  .site-header-controls {
    gap: 10px;
  }

  .brand-lockup {
    letter-spacing: 0.12em;
  }

  .lang-switch a {
    padding: 7px 10px;
  }

  .metric-pairs {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding-bottom: 24px;
  }
}