:root {
  --bg: #14141a;
  --bg-deep: #101016;
  --panel: #1b1b22;
  --card: #1e1e26;
  --card-strong: #24242e;
  --line: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --text-soft: rgba(255, 255, 255, 0.68);
  --text-faint: rgba(255, 255, 255, 0.46);
  --accent: #8ab4f8;
  --accent-strong: #5a7bd8;
  --accent-soft: rgba(138, 180, 248, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.44);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(
      circle at 10% 12%,
      rgba(138, 180, 248, 0.18),
      transparent 24rem
    ),
    radial-gradient(
      circle at 86% 20%,
      rgba(90, 123, 216, 0.12),
      transparent 20rem
    ),
    linear-gradient(180deg, #111118 0%, #14141a 26%, #101016 100%);
  font-family: "Aptos", "Segoe UI Variable Text", "Segoe UI", sans-serif;
  line-height: 1.55;
}

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

.page-shell {
  width: min(calc(100% - 2rem), var(--content));
  margin: 0 auto;
  padding-bottom: 3rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem -1rem 0 -1rem;
  padding: 0.85rem 1rem;
  background: rgba(20, 20, 26, 0.72);
  border: 1px solid var(--line);
  border-radius: 1rem;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 0.5rem;
  background: linear-gradient(
    135deg,
    var(--accent) 0%,
    var(--accent-strong) 100%
  );
  box-shadow: 0 12px 28px rgba(90, 123, 216, 0.32);
}

.brand-copy {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-copy span:last-child,
.topnav,
.panel-note,
.media-placeholder small,
.hero-note,
.detail-note {
  color: var(--text-faint);
}

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

.topnav a:hover,
.topnav a:focus-visible,
.cta-links a:hover,
.cta-links a:focus-visible {
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: 1.5rem;
  align-items: center;
  padding: 3.5rem 0 5.5rem;
}

.eyebrow,
.mini-label,
.cta-version {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
}

.eyebrow,
.mini-label {
  color: var(--accent);
}

h1,
h2,
h3,
.brand-copy strong {
  font-family:
    "Bahnschrift", "Aptos Display", "Segoe UI Variable Display", sans-serif;
}

h1 {
  margin: 0.4rem 0 1rem;
  font-size: clamp(2.35rem, 4.4vw, 4rem);
  line-height: 0.98;
  max-width: 14ch;
}

.lede {
  max-width: 42ch;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.download-panel,
.hero-frame,
.spec-card,
.showcase-media,
.summary-item,
.cta-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0)),
    var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.download-panel {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-lg);
}

.release-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.release-version-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

h2 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.9rem, 3vw, 2.7rem);
  line-height: 1.03;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.hero-actions {
  margin-top: 1rem;
}

.release-tags,
.hero-actions,
.cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.release-tags {
  margin: 1rem 0;
}

.release-tags span,
.summary-item {
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--text-soft);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3rem;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.btn-icon {
  height: 1.05rem;
  width: auto;
  flex-shrink: 0;
}

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

.button-primary {
  background: linear-gradient(
    135deg,
    var(--accent) 0%,
    var(--accent-strong) 100%
  );
  color: #0f1420;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.08);
}

.button-ghost {
  color: var(--text-soft);
}

.button-inline-ghost {
  min-height: auto;
  padding: 0.3rem 0.65rem;
  font-size: 0.82rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.button-wide {
  width: 100%;
}

.panel-note {
  font-size: 0.9rem;
  margin: 0.95rem 0.5rem 0 0.5rem;
}

.hero-note,
.detail-note {
  margin: 0.7rem 0 0;
  font-size: 0.9rem;
}

.hero-frame,
.showcase-media {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.frame-bar {
  display: flex;
  gap: 0.42rem;
  padding: 0.95rem 1rem;
}

.frame-bar span {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.media-placeholder {
  display: grid;
  place-items: center;
  gap: 0.45rem;
  min-height: 21rem;
  padding: 1rem;
  text-align: center;
  color: var(--text-soft);
  background:
    radial-gradient(
      circle at 30% 20%,
      rgba(138, 180, 248, 0.18),
      transparent 20rem
    ),
    linear-gradient(160deg, #23242e 0%, #171923 100%);
}

.media-placeholder img {
  width: 100%;
  overflow: hidden;
  border-radius: 0.5rem;
}

.zoomable-image {
  display: block;
  cursor: zoom-in;
}

.zoomable-image:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 0.35rem;
}

.media-hero {
  min-height: 28rem;
}

.media-placeholder p {
  margin: 0;
  color: var(--text);
  font-weight: 700;
}

.lightbox-open {
  overflow: hidden;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 7, 12, 0.86);
  backdrop-filter: blur(10px);
}

.lightbox-frame {
  position: relative;
  z-index: 1;
  margin: 0;
  width: min(92vw, 1200px);
}

.lightbox-image {
  display: block;
  max-width: 100%;
  max-height: 82vh;
  margin: 0 auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.lightbox-caption {
  margin-top: 0.85rem;
  text-align: center;
  color: var(--text-soft);
}

.lightbox-close {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  z-index: 2;
  min-height: auto;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(20, 20, 26, 0.88);
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.lightbox-close:hover,
.lightbox-close:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 1.2rem;
  align-items: start;
  padding: 2rem 0 5rem;
}

.intro-copy p {
  color: var(--text-soft);
}

.spec-card {
  padding: 1rem;
  border-radius: var(--radius-md);
}

.spec-title {
  margin: 0 0 0.85rem;
  color: var(--text);
  font-weight: 700;
}

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

.spec-table th,
.spec-table td {
  padding: 0.72rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  vertical-align: top;
  text-align: left;
}

.spec-table tr:first-child th,
.spec-table tr:first-child td {
  border-top: 0;
  padding-top: 0;
}

.spec-table th {
  width: 9.5rem;
  padding-right: 1rem;
  color: var(--text);
  font-weight: 700;
}

.spec-table td,
.showcase-copy p,
.showcase-copy li,
.summary-copy p {
  color: var(--text-soft);
}

.showcase {
  display: grid;
  gap: 4.5rem;
}

.showcase-row {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  gap: 1.1rem;
  align-items: center;
  padding: 1.4rem 0;
}

.showcase-row-reverse {
  grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
}

.showcase-row-reverse .showcase-copy {
  order: 2;
}

.showcase-row-reverse .showcase-media {
  order: 1;
}

.showcase-copy h3 {
  margin: 0.25rem 0 0.65rem;
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  line-height: 1.04;
  max-width: 22ch;
}

.showcase-copy ul {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
}

.showcase-copy li + li {
  margin-top: 0.4rem;
}

.faq-band {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 1.2rem;
  align-items: start;
  padding: 5rem 0 0;
}

.faq-band {
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  justify-items: stretch;
}

.faq-copy {
  text-align: left;
  max-width: none;
  grid-column: 1 / -1;
}

.feature-band {
  padding: 5rem 0 0;
}

.feature-head {
  margin-bottom: 1.6rem;
}

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

.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.65rem;
  padding: 1.6rem 1.25rem;
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0)),
    var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.9rem;
  background: var(--accent-soft);
  color: var(--accent);
}

.feature-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.feature-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.summary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.summary-item {
  border-radius: var(--radius-md);
  padding: 1rem;
  border: 1px solid var(--line);
}

.summary-item strong {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.faq-list {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.9rem;
  width: min(100%, 52rem);
  justify-self: center;
}

.faq-item {
  padding: 1rem;
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0)),
    var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}

.faq-item p {
  margin: 0.7rem 0 0;
  color: var(--text-soft);
}

.footer {
  padding: 2.5rem 0 1.5rem;
  color: var(--text-faint);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.4rem 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
}

.footer-stamp {
  color: var(--text-soft);
}

.footer-stamp #footer-version {
  color: var(--text);
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 380ms ease,
    transform 380ms ease;
}

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

@media (max-width: 980px) {
  .hero,
  .intro-band,
  .showcase-row,
  .showcase-row-reverse,
  .faq-band {
    grid-template-columns: 1fr;
  }

  .showcase-row-reverse .showcase-copy,
  .showcase-row-reverse .showcase-media {
    order: initial;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(calc(100% - 1.2rem), var(--content));
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 1.2rem;
  }

  .hero {
    padding-top: 3rem;
  }

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

  .spec-table th,
  .spec-table td {
    display: block;
    width: auto;
    padding-right: 0;
  }

  .spec-table td {
    padding-top: 0.2rem;
  }

  .media-hero {
    min-height: 22rem;
  }
}

html:lang(ja) h1 {
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

html:lang(ja) h2 {
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

html:lang(ja) h3 {
  line-height: 1.18;
  letter-spacing: -0.005em;
}

html:lang(ja) .topnav {
  font-size: 0.95rem;
  gap: 0.85rem;
}

html:lang(ja) .lede,
html:lang(ja) .hero-note,
html:lang(ja) .intro-copy p,
html:lang(ja) .showcase-copy p,
html:lang(ja) .showcase-copy li,
html:lang(ja) .feature-card p,
html:lang(ja) .faq-item p,
html:lang(ja) .spec-table td {
  line-height: 1.75;
  letter-spacing: 0;
}

html:lang(ja) .spec-table th {
  width: 8.5rem;
  letter-spacing: 0;
}

html:lang(ja) .button {
  font-size: 0.95rem;
  letter-spacing: 0;
}

html:lang(ja) .button-inline-ghost {
  font-size: 0.78rem;
  letter-spacing: 0;
}

html:lang(ja) .eyebrow,
html:lang(ja) .mini-label,
html:lang(ja) .topnav,
html:lang(ja) .brand-copy span:last-child,
html:lang(ja) .footer-stamp,
html:lang(ja) .footer-rights {
  letter-spacing: 0.02em;
}

html:lang(ja) .spec-table,
html:lang(ja) .faq-item,
html:lang(ja) .feature-card,
html:lang(ja) .showcase-copy,
html:lang(ja) .intro-copy {
  font-feature-settings: "palt" 1;
}