:root {
  --bg: #050609;
  --bg-2: #080c13;
  --panel: rgba(12, 17, 26, 0.84);
  --panel-solid: #0d1420;
  --text: #f7f8fb;
  --muted: #aab4c4;
  --dim: #748095;
  --gold: #d9b66a;
  --gold-2: #f2d48a;
  --line: rgba(217, 182, 106, 0.26);
  --line-cool: rgba(151, 168, 197, 0.18);
  --container: 1140px;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.48);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 8%, rgba(54, 75, 118, 0.28), transparent 34rem),
    radial-gradient(circle at 86% 26%, rgba(217, 182, 106, 0.12), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

.language-toggle-input {
  position: fixed;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.en {
  display: none !important;
}

.language-toggle-input:checked ~ .site-shell .ja {
  display: none !important;
}

.language-toggle-input:checked ~ .site-shell .en {
  display: inline !important;
}

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

a {
  color: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line-cool);
  background: rgba(5, 6, 9, 0.78);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  width: 214px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0;
}

.site-nav a {
  position: relative;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--gold-2);
  content: "";
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
}

.switch-control {
  position: relative;
  display: inline-flex;
  width: 48px;
  height: 26px;
  align-items: center;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 17, 26, 0.88);
  cursor: pointer;
}

.switch-control span {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gold);
  transition: transform 180ms ease, background 180ms ease;
}

.switch-label-ja {
  color: var(--gold-2);
}

.language-toggle-input:checked ~ .site-shell .switch-control span {
  transform: translateX(22px);
}

.language-toggle-input:checked ~ .site-shell .switch-label-ja {
  color: var(--muted);
}

.language-toggle-input:checked ~ .site-shell .switch-label-en {
  color: var(--gold-2);
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: 68% center;
  opacity: 0.78;
  transform: scale(1.03);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 6, 9, 0.96) 0%, rgba(5, 6, 9, 0.86) 38%, rgba(5, 6, 9, 0.34) 74%),
    linear-gradient(180deg, rgba(5, 6, 9, 0.24), rgba(5, 6, 9, 0.92));
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 100svh;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 54px;
  align-items: end;
  padding: 150px 0 86px;
}

.hero-copy,
.hero-panel,
.section-heading,
.section-body,
.project-copy,
.project-visual {
  min-width: 0;
}

.hero-copy {
  max-width: 810px;
}

.eyebrow,
.panel-label {
  margin: 0;
  color: var(--gold-2);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 900px;
  margin-top: 18px;
  font-size: clamp(3rem, 6vw, 5.4rem);
  overflow-wrap: anywhere;
}

h1 span {
  display: block;
}

.language-toggle-input:checked ~ .site-shell h1 .en {
  display: block !important;
}

h2 {
  font-size: clamp(2.1rem, 4.2vw, 4.4rem);
}

h3 {
  font-size: 1.14rem;
}

.lead {
  max-width: 710px;
  margin: 30px 0 0;
  color: #e8edf6;
  font-size: clamp(1.06rem, 1.5vw, 1.24rem);
  line-height: 2;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button,
.mail-link {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border: 1px solid var(--gold);
  border-radius: 999px;
  background: var(--gold);
  color: #11131a;
  font-weight: 900;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible,
.mail-link:hover,
.mail-link:focus-visible {
  transform: translateY(-2px);
  background: var(--gold-2);
  border-color: var(--gold-2);
}

.button-ghost {
  background: rgba(10, 15, 24, 0.48);
  color: var(--gold-2);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  background: rgba(20, 28, 42, 0.78);
  color: var(--text);
}

.hero-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(12, 17, 26, 0.88), rgba(8, 12, 19, 0.68));
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-panel h2 {
  margin-top: 10px;
  font-size: 1.7rem;
}

.hero-panel dl {
  display: grid;
  gap: 1px;
  margin: 22px 0 0;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: 8px;
  background: var(--line-cool);
}

.hero-panel div {
  padding: 14px;
  background: rgba(5, 8, 14, 0.78);
}

.hero-panel dt {
  color: var(--dim);
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

.hero-panel dd {
  margin: 4px 0 0;
  color: var(--text);
  font-weight: 800;
}

.focus-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.75;
}

.reveal {
  opacity: 1;
  transform: translateY(0);
  animation: revealUp 760ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.reveal-1 { animation-delay: 120ms; }
.reveal-2 { animation-delay: 220ms; }
.reveal-3 { animation-delay: 340ms; }
.reveal-4 { animation-delay: 460ms; }
.reveal-5 { animation-delay: 620ms; }

.ticker {
  overflow: hidden;
  border-bottom: 1px solid var(--line-cool);
  background: #070a10;
}

.ticker-track {
  display: flex;
  width: max-content;
  gap: 42px;
  padding: 18px 0;
  color: rgba(247, 248, 251, 0.74);
  font-size: 0.8rem;
  font-weight: 900;
  text-transform: uppercase;
  animation: tickerMove 28s linear infinite;
}

.ticker-track span {
  position: relative;
}

.ticker-track span::after {
  position: absolute;
  top: 50%;
  right: -25px;
  width: 7px;
  height: 7px;
  transform: translateY(-50%) rotate(45deg);
  border: 1px solid var(--gold);
  content: "";
}

.section {
  padding: 108px 0;
}

.section-grid,
.section-topline {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1.28fr);
  gap: 64px;
}

.section-topline {
  align-items: end;
  margin-bottom: 38px;
}

.large-text {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.35rem, 2.5vw, 2.1rem);
  line-height: 1.55;
}

.section-body p:not(.large-text),
.section-topline > p,
.project-copy p,
.contact-intro p {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.vision-card {
  margin-top: 34px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(217, 182, 106, 0.12), rgba(13, 20, 32, 0.78)),
    var(--panel-solid);
}

.vision-card h3 {
  margin-top: 10px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.vision-card p:last-child {
  margin: 18px 0 0;
  color: #dbe2ee;
}

.works-section {
  border-top: 1px solid var(--line-cool);
  border-bottom: 1px solid var(--line-cool);
  background: linear-gradient(180deg, rgba(8, 12, 19, 0.64), rgba(5, 6, 9, 0.9));
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-cool);
  border-left: 1px solid var(--line-cool);
}

.work-card {
  min-height: 310px;
  padding: 28px;
  border-right: 1px solid var(--line-cool);
  border-bottom: 1px solid var(--line-cool);
  background: rgba(13, 20, 32, 0.54);
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease;
}

.work-card:hover {
  transform: translateY(-8px);
  border-color: var(--line);
  background: rgba(19, 30, 48, 0.78);
}

.work-card span,
.process-list span,
.inquiry-list span {
  display: inline-block;
  color: var(--gold-2);
  font-size: 0.82rem;
  font-weight: 900;
}

.work-card span,
.process-list span {
  margin-bottom: 44px;
}

.work-card p,
.process-list p,
.inquiry-list p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.project-section {
  background:
    linear-gradient(180deg, rgba(5, 6, 9, 0.92), rgba(8, 12, 19, 0.96)),
    var(--bg-2);
}

.project-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(330px, 0.78fr);
  gap: 56px;
  align-items: center;
}

.project-visual {
  position: relative;
  aspect-ratio: 16 / 9;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #050609;
  box-shadow: var(--shadow);
}

.project-visual::before {
  position: absolute;
  inset: -16px;
  z-index: -1;
  border: 1px solid var(--line);
  border-radius: 8px;
  content: "";
}

.project-visual img {
  width: 100%;
}

.project-slides,
.project-slide {
  position: absolute;
  inset: 0;
}

.project-slide {
  height: 100%;
  opacity: 0;
  object-fit: cover;
  object-position: center;
  transform: scale(1.02);
  animation: projectSlide 24s infinite;
}

.project-slide:nth-child(2) {
  animation-delay: 6s;
}

.project-slide:nth-child(3) {
  animation-delay: 12s;
}

.project-slide:nth-child(4) {
  animation-delay: 18s;
}

.project-slideshow::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 6, 9, 0.14), transparent 38%, rgba(5, 6, 9, 0.78)),
    linear-gradient(90deg, rgba(5, 6, 9, 0.62), transparent 62%);
  content: "";
  pointer-events: none;
}

.project-caption {
  position: absolute;
  right: 22px;
  bottom: 22px;
  left: 22px;
  z-index: 2;
  max-width: 520px;
  color: var(--text);
}

.project-status {
  display: inline-flex;
  margin: 0 0 10px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  background: rgba(7, 11, 18, 0.72);
  color: var(--gold-2);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.project-caption h3 {
  font-size: clamp(1.2rem, 2.4vw, 2rem);
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.72);
}

.project-caption p:last-child {
  max-width: 480px;
  margin: 10px 0 0;
  color: #dbe2ee;
  font-size: 0.92rem;
  line-height: 1.75;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.78);
}

.spec-list {
  display: grid;
  gap: 1px;
  margin-top: 34px;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: 8px;
  background: var(--line-cool);
}

.spec-list div {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 18px;
  background: rgba(9, 14, 23, 0.86);
}

.spec-list span {
  color: var(--dim);
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.spec-list strong {
  min-width: 0;
  overflow-wrap: anywhere;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  min-height: 240px;
  padding: 28px;
  border: 1px solid var(--line-cool);
  border-radius: 8px;
  background: var(--panel-solid);
}

.contact-section {
  padding: 92px 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(217, 182, 106, 0.16), transparent 28rem),
    #080b11;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: 52px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(12, 17, 26, 0.78);
  box-shadow: var(--shadow);
}

.contact-intro h2 {
  margin-top: 10px;
}

.mail-link {
  margin-top: 28px;
}

.contact-details {
  display: grid;
  gap: 28px;
}

.inquiry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: 8px;
  background: var(--line-cool);
}

.inquiry-list div {
  min-height: 144px;
  padding: 22px;
  background: rgba(7, 11, 18, 0.82);
}

.inquiry-list p {
  color: var(--text);
  font-weight: 800;
}

.profile-block {
  padding-top: 8px;
}

.profile-list {
  display: grid;
  gap: 1px;
  margin: 14px 0 0;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: 8px;
  background: var(--line-cool);
}

.profile-list div {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  background: rgba(7, 11, 18, 0.82);
}

.profile-list dt,
.profile-list dd {
  padding: 14px 18px;
}

.profile-list dt {
  color: var(--dim);
  font-size: 0.76rem;
  font-weight: 900;
  text-transform: uppercase;
}

.profile-list dd {
  min-width: 0;
  margin: 0;
  color: var(--text);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.site-footer {
  border-top: 1px solid var(--line-cool);
  background: #030407;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin: 0;
  font-size: 0.9rem;
}

.footer-tagline {
  color: var(--gold-2);
  font-weight: 800;
}

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.03) translate3d(0, 0, 0);
  }

  to {
    transform: scale(1.08) translate3d(-1.4%, 0.8%, 0);
  }
}

@keyframes tickerMove {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@keyframes projectSlide {
  0%,
  21% {
    opacity: 1;
    transform: scale(1.02);
  }

  25%,
  100% {
    opacity: 0;
    transform: scale(1.06);
  }
}

@media (max-width: 980px) {
  .site-header {
    position: static;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 14px 0;
  }

  .header-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 14px 20px;
  }

  .hero-inner {
    min-height: 760px;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: end;
    padding: 64px 0;
  }

  .hero-panel {
    max-width: 520px;
  }

  .section-grid,
  .section-topline,
  .project-layout,
  .contact-card {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

  .process-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .brand-logo {
    width: 190px;
  }

  .hero-bg {
    object-position: 70% center;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(5, 6, 9, 0.46) 0%, rgba(5, 6, 9, 0.84) 38%, rgba(5, 6, 9, 0.98) 100%),
      linear-gradient(90deg, rgba(5, 6, 9, 0.86), rgba(5, 6, 9, 0.18));
  }

  .hero-inner {
    min-height: 780px;
    padding: 46px 0 52px;
  }

  .hero-copy,
  .hero-panel {
    width: 100%;
    max-width: 340px;
  }

  h1 {
    font-size: clamp(2.15rem, 9.6vw, 2.65rem);
    line-height: 1.12;
    word-break: break-word;
  }

  .lead {
    font-size: 1rem;
    line-height: 1.9;
    word-break: break-word;
  }

  .project-visual {
    aspect-ratio: 16 / 10;
  }

  .project-caption {
    right: 14px;
    bottom: 14px;
    left: 14px;
  }

  .project-caption p:last-child {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button,
  .mail-link {
    width: 100%;
  }

  .section {
    padding: 72px 0;
  }

  .work-grid,
  .inquiry-list {
    grid-template-columns: 1fr;
  }

  .work-card {
    min-height: 236px;
  }

  .spec-list div,
  .profile-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .contact-card {
    padding: 24px;
    border-radius: 8px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .project-slide {
    animation: none !important;
    opacity: 0;
    transform: none;
  }

  .project-slide:first-child {
    opacity: 1;
  }
}

@media print {
  :root {
    --bg: #ffffff;
    --bg-2: #ffffff;
    --panel: #ffffff;
    --panel-solid: #ffffff;
    --text: #000000;
    --muted: #333333;
    --dim: #333333;
    --gold: #000000;
    --gold-2: #000000;
    --line: #999999;
    --line-cool: #999999;
    --shadow: none;
  }

  body {
    background: #ffffff;
    color: #000000;
    font-size: 12pt;
  }

  .site-header {
    position: static;
    background: #ffffff;
  }

  .site-nav,
  .hero-bg,
  .hero-shade,
  .ticker,
  .hero-actions {
    display: none;
  }

  .hero,
  .hero-inner,
  .section,
  .contact-section {
    min-height: 0;
    padding: 20px 0;
  }

  .hero-inner,
  .section-grid,
  .section-topline,
  .project-layout,
  .contact-card,
  .process-list {
    display: block;
  }

  .work-grid,
  .profile-list,
  .spec-list,
  .inquiry-list {
    display: block;
    border: 1px solid #999999;
  }

  .hero-panel,
  .work-card,
  .process-list li,
  .contact-card,
  .profile-list div,
  .spec-list div,
  .inquiry-list div,
  .vision-card {
    border: 1px solid #999999;
    background: #ffffff;
    box-shadow: none;
  }

  .project-visual {
    aspect-ratio: auto;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .project-visual::after,
  .project-visual::before {
    display: none;
  }

  .project-slide {
    position: static;
    display: none;
    max-width: 70%;
    opacity: 1;
    transform: none;
    animation: none;
    box-shadow: none;
  }

  .project-slide:first-child {
    display: block;
  }

  .project-caption {
    position: static;
    margin-top: 10px;
    color: #000000;
  }

  .project-status {
    border-color: #999999;
    background: #ffffff;
    color: #000000;
  }

  .project-caption p:last-child {
    color: #000000;
    text-shadow: none;
  }

  .project-caption h3 {
    text-shadow: none;
  }

  .project-visual img {
    box-shadow: none;
  }
}