:root {
  --bg: #04111f;
  --bg-deep: #071a2c;
  --panel: rgba(10, 30, 49, 0.72);
  --panel-strong: rgba(13, 38, 62, 0.86);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f3fbff;
  --muted: rgba(232, 246, 255, 0.78);
  --subtle: rgba(210, 232, 246, 0.58);
  --brand: #8ed8ff;
  --brand-strong: #4bb5ff;
  --brand-deep: #14486a;
  --success: #73f5be;
  --shadow: 0 32px 80px rgba(0, 9, 18, 0.36);
  --shadow-soft: 0 18px 40px rgba(0, 12, 24, 0.22);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --page-padding: clamp(16px, 4vw, 28px);
  --card-width: min(100%, 1120px);
  --indicator-gap: 44px;
  --card-height: calc(100svh - (var(--page-padding) * 2) - var(--indicator-gap));
  --duration: 760ms;
  --ease-card: cubic-bezier(0.2, 0.78, 0.15, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background:
    radial-gradient(circle at 18% 18%, rgba(91, 188, 255, 0.22), transparent 24%),
    radial-gradient(circle at 82% 24%, rgba(121, 233, 255, 0.12), transparent 20%),
    linear-gradient(180deg, #061320 0%, #081b2e 50%, #04111f 100%);
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 200svh;
  font-family: var(--font-sans);
  color: var(--text);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overscroll-behavior-y: none;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

.experience {
  position: relative;
  height: 200svh;
}

.stage {
  position: sticky;
  top: 0;
  min-height: 100svh;
  padding: calc(var(--safe-top) + var(--page-padding)) var(--page-padding) calc(var(--safe-bottom) + var(--page-padding));
  overflow: clip;
}

.ambient {
  position: absolute;
  inset: auto;
  border-radius: 999px;
  filter: blur(50px);
  pointer-events: none;
}

.ambient--one {
  width: 42vw;
  min-width: 240px;
  height: 42vw;
  min-height: 240px;
  background: rgba(80, 183, 255, 0.16);
  top: 8%;
  right: -8%;
}

.ambient--two {
  width: 48vw;
  min-width: 260px;
  height: 48vw;
  min-height: 260px;
  background: rgba(111, 255, 225, 0.08);
  bottom: -10%;
  left: -12%;
}

.card-scene {
  position: relative;
  width: var(--card-width);
  height: var(--card-height);
  margin: 0 auto;
  perspective: 1800px;
  transform-style: preserve-3d;
}

.business-card {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-xl);
  transform-style: preserve-3d;
  will-change: transform;
  box-shadow: var(--shadow);
}

.business-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0.02) 45%, rgba(117, 211, 255, 0.28));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.65;
}

.face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  overflow: clip;
  backface-visibility: hidden;
  transform-style: preserve-3d;
  isolation: isolate;
}

.face__veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(166, 226, 255, 0.13), transparent 24%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02) 42%, rgba(4, 17, 31, 0.08) 100%),
    linear-gradient(180deg, rgba(5, 21, 37, 0.92), rgba(6, 22, 38, 0.97));
}

.face__veil--back {
  background:
    radial-gradient(circle at 82% 14%, rgba(116, 206, 255, 0.16), transparent 26%),
    radial-gradient(circle at 16% 86%, rgba(109, 255, 211, 0.09), transparent 30%),
    linear-gradient(180deg, rgba(6, 24, 41, 0.96), rgba(5, 19, 34, 0.98));
}

.face__inner {
  position: relative;
  z-index: 2;
  height: 100%;
  padding: clamp(18px, 3vw, 28px);
  transform: translateZ(0);
}

.face--front {
  transform: rotateY(0deg) translateZ(1px);
}

.face--back {
  transform: rotateY(180deg) translateZ(1px);
  -webkit-font-smoothing: antialiased;
}

.face__inner--front {
  display: grid;
  grid-template-rows: auto minmax(150px, 28svh) auto auto;
  gap: clamp(16px, 2.4vw, 26px);
}

.front-head,
.back-head,
.front-foot,
.back-foot,
.section-head,
.contact-actions,
.cta-row,
.pill-row {
  display: flex;
  align-items: center;
}

.front-head,
.back-head,
.front-foot,
.section-head,
.contact-actions {
  justify-content: space-between;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  opacity: 0.74;
}

.logo-mark__icon {
  width: 34px;
  height: 34px;
  display: inline-flex;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.logo-mark__icon img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.logo-mark__text {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--subtle);
  font-family: var(--font-mono);
}

.chip {
  min-height: 40px;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  backdrop-filter: blur(18px);
  white-space: nowrap;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.chip--ghost {
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.chip--solid {
  color: #08243b;
  border-color: rgba(255, 255, 255, 0.32);
  background: linear-gradient(135deg, #eefbff 0%, #9fddff 100%);
}

.hero-visual {
  position: relative;
  min-height: 150px;
  border-radius: calc(var(--radius-xl) - 10px);
  overflow: clip;
  background:
    radial-gradient(circle at 50% 50%, rgba(133, 224, 255, 0.08), transparent 48%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.hero-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(20px);
  pointer-events: none;
}

.hero-glow--primary {
  inset: auto auto 10% 8%;
  width: 28%;
  aspect-ratio: 1;
  background: rgba(77, 188, 255, 0.18);
}

.hero-glow--secondary {
  inset: 14% 8% auto auto;
  width: 22%;
  aspect-ratio: 1;
  background: rgba(132, 244, 255, 0.14);
}

.particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 1;
}

.front-copy {
  align-self: end;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand);
  font-family: var(--font-mono);
}

.name {
  margin: 0;
  font-size: clamp(2rem, 6vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.title {
  margin: 12px 0 0;
  font-size: clamp(0.96rem, 2.5vw, 1.18rem);
  color: var(--muted);
}

.roman {
  margin: 8px 0 0;
  font-size: clamp(0.9rem, 2.2vw, 1.05rem);
  letter-spacing: 0.06em;
  color: var(--subtle);
  font-family: var(--font-mono);
}

.lead {
  margin: 18px 0 0;
  font-size: clamp(1.28rem, 4vw, 2.7rem);
  line-height: 1.22;
  letter-spacing: -0.04em;
}

.summary {
  margin: 14px 0 0;
  max-width: 44ch;
  color: var(--muted);
  line-height: 1.72;
  font-size: clamp(0.92rem, 2.4vw, 1rem);
}

.front-actions {
  display: grid;
  gap: 12px;
}

.cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 56px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.cta--primary {
  padding: 14px 18px;
  justify-content: space-between;
  background: linear-gradient(135deg, #f6fdff 0%, #96dcff 52%, #79f0cf 100%);
  color: #08243b;
  box-shadow: 0 18px 30px rgba(75, 181, 255, 0.2);
}

.front-actions .cta--primary[href*="line.me"] {
  background: #06c755;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.22);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
  box-shadow: 0 18px 30px rgba(6, 199, 85, 0.28);
}

.cta--primary span {
  font-size: 1rem;
  font-weight: 700;
}

.cta--primary small {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.75;
}

.cta-row {
  gap: 10px;
}

.cta-row .cta {
  flex: 1;
}

.cta--secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.front-actions .cta--secondary[href*="instagram"] {
  background: linear-gradient(135deg, #f9ce34 0%, #ee2a7b 45%, #6228d7 100%);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.18);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

.front-actions .cta--secondary[href*="facebook"] {
  background: linear-gradient(135deg, #1877f2 0%, #3b5998 100%);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.18);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

.front-foot {
  gap: 12px;
  justify-content: space-between;
  align-items: end;
}

.flip-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.micro-copy {
  margin: 0;
  color: var(--subtle);
  font-size: 0.78rem;
}

.face__inner--back {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
  overflow: hidden;
  transform: translateZ(0);
}

.back-head {
  gap: 12px;
  align-items: start;
  transform: translateZ(0);
}

.back-title {
  margin: 4px 0 0;
  font-size: clamp(1.18rem, 3vw, 1.56rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.back-grid {
  min-height: 0;
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 14px;
  align-content: start;
  overflow: auto;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(146, 219, 255, 0.34) transparent;
  transform: translateZ(0);
}

.back-grid::-webkit-scrollbar {
  width: 6px;
}

.back-grid::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(146, 219, 255, 0.34);
}

.glass-card {
  padding: 14px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(20px);
  transform: translateZ(0);
}

.face--back .glass-card {
  background: linear-gradient(180deg, rgba(10, 32, 52, 0.96), rgba(6, 24, 40, 0.9));
  border-color: rgba(255, 255, 255, 0.14);
  backdrop-filter: none;
}

.face--back .service-list li,
.face--back .gallery-item,
.face--back .map-frame,
.face--back .mini-cta,
.face--back .pill {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}

.face--back .section-head p,
.face--back .identity-card__lead,
.face--back .service-list span,
.face--back .nap,
.face--back .faq-card p {
  color: rgba(235, 248, 255, 0.9);
}

.identity-card {
  grid-column: span 2;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(120px, 188px);
  gap: 14px;
  align-items: center;
}

.metric {
  margin: 0 0 10px;
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  font-weight: 700;
  color: var(--brand);
}

.identity-card__lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.94rem;
}

.pill-row {
  margin-top: 14px;
  gap: 8px;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.78rem;
}

.portrait-frame {
  margin: 0;
  border-radius: 22px;
  overflow: clip;
  aspect-ratio: 3 / 4;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
  background: rgba(255, 255, 255, 0.05);
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-head {
  margin-bottom: 12px;
  gap: 8px;
}

.section-head--map {
  margin-bottom: 10px;
}

.section-head h3 {
  margin: 0;
  font-size: 0.98rem;
}

.section-head p {
  margin: 0;
  color: var(--subtle);
  font-size: 0.76rem;
}

.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.service-list li {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.service-list strong {
  font-size: 0.92rem;
}

.service-list span {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.gallery-card,
.contact-card,
.faq-card,
.map-card,
.service-card {
  min-width: 0;
}

.gallery-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(66%, 1fr);
  gap: 10px;
  overflow-x: auto;
  padding: 2px 1px 6px;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.gallery-track::-webkit-scrollbar {
  display: none;
}

.gallery-item {
  scroll-snap-align: center;
  position: relative;
  display: grid;
  gap: 10px;
  padding: 10px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transform: scale(0.9);
  opacity: 0.72;
  transition: transform 260ms ease, opacity 260ms ease, border-color 260ms ease;
}

.gallery-item.is-active {
  transform: scale(1);
  opacity: 1;
  border-color: rgba(142, 216, 255, 0.4);
}

.gallery-item__visual {
  min-height: 88px;
  border-radius: 14px;
  position: relative;
  overflow: clip;
  aspect-ratio: 4 / 3;
}

.gallery-item__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.18));
  pointer-events: none;
}

.gallery-item__visual img,
.gallery-item__visual video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.gallery-item__visual--one {
  background:
    radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.32), transparent 18%),
    linear-gradient(135deg, #9ed6ff 0%, #5eb6ff 55%, #20628b 100%);
}

.gallery-item__visual--two {
  background:
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.28), transparent 18%),
    linear-gradient(135deg, #87f3d0 0%, #54bde1 52%, #1f537a 100%);
}

.gallery-item__visual--three {
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.28), transparent 20%),
    linear-gradient(135deg, #c9e5ff 0%, #81c9ff 45%, #2a4f77 100%);
}

.gallery-item figcaption {
  display: grid;
  gap: 3px;
}

.gallery-item strong {
  font-size: 0.84rem;
}

.gallery-item span {
  font-size: 0.72rem;
  color: var(--subtle);
}

.nap {
  display: grid;
  gap: 6px;
  margin: 0;
  color: var(--muted);
  font-style: normal;
  line-height: 1.6;
  font-size: 0.82rem;
}

.nap a {
  color: var(--text);
}

.contact-actions {
  margin-top: 12px;
  gap: 8px;
  flex-wrap: wrap;
}

.mini-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  min-height: 40px;
  padding: 0 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
}



.faq-card details {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 0;
}

.faq-card details:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.faq-card summary {
  list-style: none;
  font-weight: 600;
  cursor: pointer;
}

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

.faq-card p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.82rem;
}

.map-frame {
  min-height: 132px;
  height: clamp(120px, 18svh, 160px);
  border-radius: 18px;
  overflow: clip;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.back-foot {
  justify-content: center;
  padding-top: 4px;
  flex-direction: column;
  gap: 6px;
}

.credit-link {
  font-size: 11px;
  color: rgba(224, 243, 255, 0.42);
  letter-spacing: 0.04em;
}

.progress-ui {
  position: absolute;
  left: 50%;
  bottom: calc(var(--safe-bottom) + 8px);
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(5, 19, 32, 0.34);
  border: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px);
}

.progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  transition: width 220ms ease, background-color 220ms ease;
}

.progress-dot.is-active {
  width: 24px;
  background: linear-gradient(90deg, #dff7ff, #7ccfff);
}

.cta:hover,
.cta:focus-visible,
.mini-cta:hover,
.mini-cta:focus-visible,
.chip:hover,
.chip:focus-visible,
.flip-hint:hover,
.flip-hint:focus-visible,
.credit-link:hover,
.credit-link:focus-visible {
  transform: translateY(-1px);
}

.cta:focus-visible,
.mini-cta:focus-visible,
.chip:focus-visible,
.flip-hint:focus-visible,
.credit-link:focus-visible,
.gallery-track:focus-visible {
  outline: 2px solid rgba(148, 223, 255, 0.8);
  outline-offset: 3px;
}

@media (max-width: 860px) {
  .card-scene {
    width: min(100%, 100%);
  }

  .face__inner--front {
    grid-template-rows: auto minmax(160px, 26svh) auto auto;
  }

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

  .identity-card {
    grid-column: auto;
    grid-template-columns: minmax(0, 1fr) 120px;
  }

  .gallery-track {
    grid-auto-columns: 82%;
  }
}

@media (max-width: 640px) {
  :root {
    --page-padding: 14px;
    --card-height: calc(100svh - (var(--page-padding) * 2));
    --radius-xl: 28px;
    --indicator-gap: 32px;
  }

  .stage {
    padding-top: calc(var(--safe-top) + 12px);
    padding-bottom: calc(var(--safe-bottom) + 14px);
  }

  .face__inner {
    padding: 16px;
  }

  .face__inner--front {
    gap: 14px;
  }

  .hero-visual {
    min-height: 180px;
  }

  .front-head,
  .front-foot,
  .back-head {
    gap: 10px;
  }

  .chip {
    min-height: 38px;
    padding-inline: 12px;
  }

  .summary {
    max-width: 100%;
  }

  .cta-row {
    flex-direction: row;
  }

  .identity-card {
    grid-template-columns: minmax(0, 1fr) 104px;
  }

  .identity-card__lead,
  .service-list span,
  .nap,
  .faq-card p {
    font-size: 0.8rem;
  }

  .gallery-track {
    grid-auto-columns: 90%;
  }

  .gallery-item__visual {
    min-height: 120px;
    aspect-ratio: 1 / 1;
  }

  .map-frame {
    height: 126px;
  }
}

@media (max-width: 420px) {
  .logo-mark__text,
  .micro-copy {
    display: none;
  }

  .chip {
    font-size: 10px;
    letter-spacing: 0.12em;
  }

  .lead {
    font-size: clamp(1.18rem, 7.2vw, 1.56rem);
  }

  .hero-visual {
    min-height: 170px;
  }

  .back-title {
    font-size: 1.02rem;
  }

  .cta--primary {
    padding-inline: 16px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}