:root {
  --ink: #f4efe5;
  --muted: #c8bbab;
  --dim: #8d8175;
  --paper: #efe8da;
  --night: #0b0a09;
  --charcoal: #15120f;
  --brown-black: #201712;
  --line: rgba(244, 239, 229, 0.16);
  --line-dark: rgba(21, 18, 15, 0.18);
  --gold: #c9a66b;
  --amber: #b96f3f;
  --crimson: #7c2526;
  --max: 1180px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--night);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

body::before {
  position: fixed;
  z-index: 2;
  inset: 0;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(circle at var(--spot-x, 50%) var(--spot-y, 18%), rgba(201, 166, 107, 0.1), transparent 18rem),
    linear-gradient(90deg, rgba(244, 239, 229, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(244, 239, 229, 0.018) 1px, transparent 1px);
  background-size: auto, 88px 88px, 88px 88px;
  mix-blend-mode: screen;
  opacity: 0.5;
}

body::selection {
  color: var(--night);
  background: var(--gold);
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px clamp(20px, 5vw, 64px);
  color: var(--ink);
  background: linear-gradient(180deg, rgba(11, 10, 9, 0.84), rgba(11, 10, 9, 0));
  transition: background 180ms ease, border-color 180ms ease, padding 180ms ease;
}

.site-header.is-scrolled {
  padding-block: 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 10, 9, 0.86);
  backdrop-filter: blur(18px);
}

.brand,
.nav,
.header-actions,
.language-toggle {
  display: flex;
  align-items: center;
}

.brand {
  width: clamp(180px, 18vw, 270px);
  flex: 0 0 auto;
}

.brand img {
  width: 100%;
  height: auto;
}

.nav {
  gap: clamp(14px, 3vw, 34px);
  font-size: 0.78rem;
  color: rgba(244, 239, 229, 0.78);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.header-actions {
  justify-content: flex-end;
  gap: clamp(14px, 3vw, 34px);
}

.language-toggle {
  gap: 4px;
  padding: 3px;
  border: 1px solid rgba(244, 239, 229, 0.2);
  background: rgba(244, 239, 229, 0.04);
}

.language-toggle button {
  min-width: 34px;
  height: 28px;
  padding: 0 8px;
  border: 0;
  color: rgba(244, 239, 229, 0.68);
  background: transparent;
  font: inherit;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.language-toggle button.is-active {
  color: var(--night);
  background: var(--paper);
}

.nav a {
  padding-block: 8px;
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  color: var(--ink);
  border-color: var(--gold);
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 31;
  width: 44px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0;
  border: 1px solid rgba(244, 239, 229, 0.2);
  background: rgba(244, 239, 229, 0.04);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 260ms var(--ease-out), opacity 200ms ease;
}

.site-header.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(3.75px) rotate(45deg);
}

.site-header.is-open .nav-toggle-bar:nth-child(2) {
  transform: translateY(-3.75px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  padding: 136px clamp(20px, 5vw, 64px) 72px;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  filter: saturate(0.92) contrast(1.04);
}

.hero-shade {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(11, 10, 9, 0.96) 0%, rgba(11, 10, 9, 0.84) 28%, rgba(11, 10, 9, 0.28) 66%, rgba(11, 10, 9, 0.1) 100%),
    linear-gradient(180deg, rgba(11, 10, 9, 0.54), rgba(11, 10, 9, 0.08) 48%, rgba(11, 10, 9, 0.9));
}

.hero-orbit {
  position: absolute;
  z-index: -1;
  right: max(-120px, -8vw);
  top: 50%;
  width: min(66vw, 860px);
  min-width: 520px;
  transform: translateY(-50%);
  opacity: 0.62;
  filter: drop-shadow(0 0 26px rgba(201, 166, 107, 0.18));
  pointer-events: none;
}

.hero-orbit .orbit-rings {
  animation: orbitTurn 42s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.hero-orbit .orbit-rings circle,
.hero-orbit .orbit-rings ellipse {
  fill: none;
  stroke: url("#orbitGold");
  stroke-width: 1.15;
  stroke-dasharray: 70 34 12 46;
  animation: orbitTrace 9s ease-in-out infinite alternate;
}

.hero-orbit .orbit-mark path {
  fill: none;
  stroke: rgba(244, 239, 229, 0.66);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-orbit .orbit-mark path:nth-child(3),
.hero-orbit .orbit-mark path:nth-child(4),
.hero-orbit .orbit-mark path:nth-child(5) {
  stroke: rgba(201, 166, 107, 0.62);
  stroke-width: 4;
}

.hero-content {
  max-width: 760px;
}

.kicker,
.section-label,
.service-card span,
.principles span,
.proof-copy span {
  margin: 0;
  color: var(--gold);
  font-size: 0.74rem;
  font-weight: 600;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

h1 {
  margin: 18px 0 18px;
  font-size: clamp(4.1rem, 14vw, 10.8rem);
  line-height: 0.84;
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2.15rem, 5vw, 5rem);
  line-height: 0.95;
}

h3 {
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.2;
  font-weight: 560;
}

p {
  color: var(--muted);
  line-height: 1.85;
}

.line {
  display: block;
}

.nowrap {
  display: inline-block;
  white-space: nowrap;
}

html[lang="ja"] h2 {
  line-height: 1.08;
  max-width: 100%;
}

html[lang="ja"] p,
html[lang="ja"] h3 {
  line-break: strict;
  overflow-wrap: anywhere;
}

html[lang="ja"] h2 {
  line-break: strict;
  overflow-wrap: anywhere;
  word-break: normal;
}

html[lang="ja"] .intro-grid h2,
html[lang="ja"] .craft-heading h2,
html[lang="ja"] .services-header h2,
html[lang="ja"] .proof-copy h2,
html[lang="ja"] .signature-copy h2 {
  font-size: clamp(2.05rem, 4.4vw, 4.35rem);
}

.hero-copy {
  max-width: 620px;
  color: rgba(244, 239, 229, 0.84);
  font-size: clamp(1rem, 2vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  overflow: hidden;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.button::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(110deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: translateX(-120%);
  transition: transform 650ms var(--ease-out);
}

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

.button:hover::after {
  transform: translateX(120%);
}

.button.primary {
  color: #14100c;
  background: var(--paper);
  border-color: var(--paper);
}

.button.primary:hover {
  background: var(--gold);
  border-color: var(--gold);
}

.button.secondary {
  color: var(--ink);
  background: rgba(244, 239, 229, 0.03);
}

.button.secondary:hover {
  border-color: rgba(201, 166, 107, 0.72);
}

.hero-panel {
  position: absolute;
  right: clamp(20px, 5vw, 64px);
  bottom: 38px;
  width: min(360px, calc(100vw - 40px));
  padding: 18px 0 0;
  border-top: 1px solid rgba(244, 239, 229, 0.42);
}

.hero-panel > span {
  display: block;
  margin-bottom: 10px;
  color: var(--dim);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.hero-panel strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.42rem;
  font-weight: 400;
}

.hero-panel p {
  margin: 8px 0 0;
  color: rgba(244, 239, 229, 0.7);
}

.section-band {
  padding: clamp(84px, 12vw, 150px) clamp(20px, 5vw, 64px);
}

main > section {
  scroll-margin-top: 92px;
}

.intro {
  color: var(--night);
  background: var(--paper);
}

.intro .section-label,
.craft .section-label {
  color: var(--crimson);
}

.intro-grid,
.craft-layout,
.services,
.proof,
.contact-inner,
.footer {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: clamp(36px, 7vw, 92px);
  margin-top: 28px;
}

.intro h2,
.craft h2 {
  color: var(--charcoal);
}

.intro p,
.craft p {
  color: #4e443c;
}

.intro-copy {
  display: grid;
  gap: 18px;
  align-content: start;
}

.manifesto {
  padding: clamp(52px, 8vw, 94px) 0;
  border-block: 1px solid var(--line);
  background: #100d0b;
  overflow: hidden;
}

.manifesto-line {
  display: flex;
  width: 100%;
  min-width: 100%;
  justify-content: space-between;
  gap: clamp(22px, 4vw, 66px);
  padding-inline: clamp(20px, 5vw, 64px);
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  font-size: clamp(2.8rem, 5.8vw, 6.1rem);
  line-height: 0.9;
  white-space: nowrap;
}

.manifesto-line span:nth-child(2) {
  color: var(--gold);
}

.signature {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(11, 10, 9, 0.97), rgba(21, 18, 15, 0.98)),
    var(--night);
}

.signature::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    radial-gradient(circle at 72% 44%, rgba(201, 166, 107, 0.16), transparent 28%),
    linear-gradient(90deg, rgba(244, 239, 229, 0.055) 1px, transparent 1px),
    linear-gradient(180deg, rgba(244, 239, 229, 0.035) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
  opacity: 0.48;
}

.signature-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(340px, 0.86fr);
  gap: clamp(36px, 7vw, 104px);
  align-items: center;
  width: min(100%, var(--max));
  margin: 28px auto 0;
}

.signature-copy h2 {
  max-width: 760px;
  font-size: clamp(2.6rem, 5.5vw, 5.6rem);
}

.signature-copy p {
  max-width: 620px;
  margin: 28px 0 0;
  color: rgba(244, 239, 229, 0.72);
}

.essence-diagram {
  position: relative;
  min-height: clamp(320px, 36vw, 500px);
}

.essence-diagram::before {
  position: absolute;
  inset: 11% 2% 10% 1%;
  content: "";
  border: 1px solid rgba(244, 239, 229, 0.06);
  background:
    linear-gradient(120deg, rgba(244, 239, 229, 0.025), transparent 44%),
    radial-gradient(circle at 68% 48%, rgba(201, 166, 107, 0.12), transparent 42%);
  box-shadow: inset 0 0 60px rgba(201, 166, 107, 0.045);
}

.essence-diagram svg {
  position: absolute;
  inset: 50% auto auto 50%;
  width: min(100%, 740px);
  transform: translate(-50%, -50%);
  overflow: visible;
}

.diagram-grid path {
  fill: none;
  stroke: rgba(244, 239, 229, 0.055);
  stroke-width: 1;
}

.diagram-rail {
  fill: none;
  stroke-linecap: round;
}

.diagram-rail.base {
  stroke: rgba(244, 239, 229, 0.16);
  stroke-width: 1.2;
}

.diagram-rail.active {
  stroke: url("#diagramGold");
  stroke-width: 2.2;
  stroke-dasharray: 150 520;
  animation: signalFlow 7.6s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

.diagram-stage {
  opacity: 0.92;
  transform-box: fill-box;
  transform-origin: center;
  animation: stageFocus 7.6s ease-in-out infinite;
}

.diagram-stage:nth-of-type(4) {
  animation-delay: 0.55s;
}

.diagram-stage:nth-of-type(5) {
  animation-delay: 1.1s;
}

.diagram-stage:nth-of-type(6) {
  animation-delay: 1.65s;
}

.diagram-stage rect {
  fill: rgba(244, 239, 229, 0.045);
  stroke: rgba(244, 239, 229, 0.22);
  stroke-width: 1;
}

.diagram-stage text {
  fill: rgba(244, 239, 229, 0.62);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.diagram-stage path,
.diagram-stage circle {
  fill: none;
  stroke: rgba(201, 166, 107, 0.78);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.diagram-stage.stage-four circle {
  fill: rgba(201, 166, 107, 0.12);
}

.diagram-pulse circle {
  fill: var(--gold);
  opacity: 0;
  animation: nodeTransfer 7.6s ease-in-out infinite;
}

.diagram-pulse circle:nth-child(2) {
  animation-delay: 1.25s;
}

.diagram-pulse circle:nth-child(3) {
  animation-delay: 2.5s;
}

.diagram-pulse circle:nth-child(4) {
  animation-delay: 3.75s;
}

.craft {
  background:
    linear-gradient(135deg, rgba(201, 166, 107, 0.12), transparent 34%),
    #e6ddd0;
}

.craft-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: clamp(40px, 7vw, 92px);
  margin-top: 28px;
}

.craft-heading {
  position: sticky;
  top: 110px;
  align-self: start;
}

.craft-heading p {
  margin-top: 26px;
  max-width: 540px;
}

.principles {
  display: grid;
  gap: 14px;
}

.principles article {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.28);
}

.principles h3 {
  margin: 18px 0 12px;
  color: var(--charcoal);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.55rem, 2.4vw, 2.15rem);
  font-weight: 400;
}

.principles p {
  margin-bottom: 0;
}

.services {
  padding: clamp(84px, 12vw, 150px) clamp(20px, 5vw, 64px);
}

.services-header {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.55fr);
  gap: clamp(30px, 7vw, 88px);
  margin-top: 28px;
  align-items: end;
}

.services-header p {
  margin-bottom: 12px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 58px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-card {
  min-height: 340px;
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.6vw, 34px);
  background:
    linear-gradient(180deg, rgba(244, 239, 229, 0.03), rgba(244, 239, 229, 0)),
    var(--charcoal);
  transition: transform 360ms var(--ease-out), background 360ms ease, border-color 360ms ease;
}

.service-card:hover {
  transform: translateY(-4px);
  background:
    linear-gradient(180deg, rgba(201, 166, 107, 0.08), rgba(244, 239, 229, 0.01)),
    var(--charcoal);
}

.principles article:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 37, 38, 0.22);
  background: rgba(255, 255, 255, 0.42);
}

.service-card h3 {
  margin: 86px 0 18px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.5rem, 2vw, 2.05rem);
  font-weight: 400;
}

.service-card p {
  margin-bottom: 0;
  color: rgba(244, 239, 229, 0.68);
}

.proof {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(300px, 0.56fr);
  gap: clamp(36px, 7vw, 88px);
  align-items: end;
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.proof-copy h2 {
  margin-top: 20px;
  font-size: clamp(2rem, 4.7vw, 4.7rem);
}

.proof > p {
  margin-bottom: 8px;
}

.proof-signal {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(54vw, 620px);
  transform: translate(-50%, -50%);
  opacity: 0.14;
  pointer-events: none;
}

.proof-signal path {
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.2;
  stroke-dasharray: 720;
  stroke-dashoffset: 720;
  animation: drawSignal 4s var(--ease-out) infinite alternate;
}

.proof-signal path:nth-child(2) {
  animation-delay: 0.8s;
}

.contact {
  padding: clamp(86px, 13vw, 164px) clamp(20px, 5vw, 64px);
  color: var(--charcoal);
  background:
    linear-gradient(90deg, rgba(239, 232, 218, 0.92), rgba(239, 232, 218, 0.76)),
    radial-gradient(circle at 82% 10%, rgba(185, 111, 63, 0.34), transparent 36%),
    var(--paper);
}

.contact-inner {
  max-width: 880px;
  margin-inline: 0 auto;
}

.contact h2 {
  margin-top: 18px;
  color: var(--charcoal);
}

.contact p:not(.kicker) {
  max-width: 650px;
  margin: 26px 0 34px;
  color: #51463d;
}

.contact .button.primary {
  color: var(--paper);
  background: var(--charcoal);
  border-color: var(--charcoal);
}

.contact .button.primary:hover {
  color: var(--charcoal);
  background: var(--gold);
  border-color: var(--gold);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  padding: 26px clamp(20px, 5vw, 64px);
  color: rgba(244, 239, 229, 0.62);
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-brand {
  display: flex;
  gap: 20px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.footer-nav a {
  color: rgba(244, 239, 229, 0.62);
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.footer-nav a:hover {
  color: var(--ink);
  border-color: var(--gold);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}

main > section[data-reveal] {
  opacity: 1;
  transform: none;
}

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

.principles article[data-reveal],
.service-card[data-reveal] {
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out), background 360ms ease;
}

.principles article[data-reveal],
.service-card[data-reveal] {
  opacity: 1;
  transform: none;
}

.principles article[data-reveal]:nth-child(2),
.service-card[data-reveal]:nth-child(2) {
  transition-delay: 80ms;
}

.principles article[data-reveal]:nth-child(3),
.service-card[data-reveal]:nth-child(3) {
  transition-delay: 160ms;
}

.service-card[data-reveal]:nth-child(4) {
  transition-delay: 240ms;
}

@keyframes orbitTurn {
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbitTrace {
  from {
    stroke-dashoffset: 0;
  }

  to {
    stroke-dashoffset: -180;
  }
}

@keyframes drawSignal {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes signalFlow {
  from {
    stroke-dashoffset: 0;
  }

  to {
    stroke-dashoffset: -670;
  }
}

@keyframes stageFocus {
  0%,
  100% {
    opacity: 0.72;
  }

  50% {
    opacity: 1;
  }
}

@keyframes nodeTransfer {
  0%,
  18%,
  100% {
    opacity: 0;
    transform: scale(0.82);
  }

  8% {
    opacity: 1;
    transform: scale(1.16);
  }
}

@media (max-width: 980px) {
  .intro-grid,
  .craft-layout,
  .signature-layout,
  .services-header,
  .proof {
    grid-template-columns: 1fr;
  }

  .craft-heading {
    position: static;
  }

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

  .signature-copy h2 {
    font-size: clamp(2.3rem, 8vw, 4.2rem);
  }
}

@media (max-width: 720px) {
  main > section {
    scroll-margin-top: 220px;
  }

  .site-header {
    align-items: flex-start;
    padding: 16px 20px;
  }

  .brand {
    width: 154px;
    margin-top: 2px;
  }

  .header-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
  }

  .nav {
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 6px 14px;
    max-width: 220px;
    font-size: 0.68rem;
  }

  .language-toggle button {
    min-width: 32px;
    height: 26px;
  }

  .hero {
    min-height: 92svh;
    padding: 124px 20px 200px;
  }

  .hero-orbit {
    right: -260px;
    top: 48%;
    width: 760px;
    min-width: 760px;
    opacity: 0.34;
  }

  .hero-media img {
    object-position: 64% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(11, 10, 9, 0.95), rgba(11, 10, 9, 0.64) 62%, rgba(11, 10, 9, 0.32)),
      linear-gradient(180deg, rgba(11, 10, 9, 0.55), rgba(11, 10, 9, 0.16) 48%, rgba(11, 10, 9, 0.92));
  }

  h1 {
    font-size: clamp(3.2rem, 16.5vw, 4.2rem);
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-panel {
    left: 20px;
    right: 20px;
    bottom: 28px;
  }

  .manifesto-line {
    flex-direction: column;
    gap: 12px;
    white-space: normal;
  }

  .signature-layout {
    gap: 18px;
  }

  .signature.section-band {
    padding-top: 136px;
  }

  .essence-diagram {
    min-height: 280px;
  }

  .essence-diagram::before {
    inset: 8% 0 8% 0;
  }

  .essence-diagram svg {
    width: 100%;
  }

  html[lang="ja"] .signature-copy h2 {
    font-size: clamp(2rem, 8.4vw, 2.45rem);
  }

  .proof-signal {
    width: 110vw;
    opacity: 0.1;
  }

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

  .service-card {
    min-height: 260px;
  }

  .service-card h3 {
    margin-top: 54px;
  }

  .footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Sub pages (Company / Legal / Privacy) ---------- */
.page-hero {
  position: relative;
  padding: clamp(148px, 22vh, 220px) clamp(20px, 5vw, 64px) clamp(56px, 8vw, 100px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(11, 10, 9, 0.96), rgba(21, 18, 15, 0.98)),
    var(--night);
  overflow: hidden;
  isolation: isolate;
}

.page-hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    radial-gradient(circle at 78% 30%, rgba(201, 166, 107, 0.16), transparent 34%),
    linear-gradient(90deg, rgba(244, 239, 229, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(244, 239, 229, 0.03) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
  opacity: 0.5;
}

.page-hero-inner {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.page-hero h1 {
  margin: 16px 0 20px;
  font-size: clamp(2.7rem, 7vw, 5.4rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
}

.page-lead {
  max-width: 660px;
  margin: 0;
  color: rgba(244, 239, 229, 0.76);
  font-size: clamp(1rem, 1.8vw, 1.18rem);
}

.page-subnote {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin: 20px 0 0;
  color: rgba(244, 239, 229, 0.58);
  font-size: 0.9rem;
}

.page-subnote strong {
  color: var(--gold);
  font-weight: 600;
}

.page-hero .hero-actions {
  margin-top: 30px;
}

.doc {
  padding: clamp(60px, 9vw, 116px) clamp(20px, 5vw, 64px);
  color: var(--charcoal);
  background: var(--paper);
}

.doc-inner {
  width: min(100%, 920px);
  margin-inline: auto;
}

.doc-block + .doc-block {
  margin-top: clamp(42px, 6vw, 74px);
}

.doc-label {
  margin: 0 0 14px;
  color: var(--crimson);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.doc h2 {
  margin: 0 0 20px;
  color: var(--charcoal);
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  line-height: 1.1;
}

.doc h3 {
  margin: 0 0 10px;
  color: var(--charcoal);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 400;
}

.doc p {
  color: #4e443c;
  margin: 0 0 14px;
}

.doc p:last-child {
  margin-bottom: 0;
}

.doc a {
  color: var(--crimson);
  border-bottom: 1px solid rgba(124, 37, 38, 0.4);
}

.doc a:hover {
  border-color: var(--crimson);
}

.info-table,
.timeline,
.news-list {
  margin: 0;
  border-top: 1px solid var(--line-dark);
}

.info-table div,
.timeline div {
  display: grid;
  grid-template-columns: minmax(120px, 0.26fr) 1fr;
  gap: 12px 32px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line-dark);
}

.info-table dt {
  margin: 0;
  color: var(--charcoal);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.info-table dd {
  margin: 0;
  color: #4e443c;
  line-height: 1.75;
}

.timeline dt {
  margin: 0;
  color: var(--crimson);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  font-weight: 400;
}

.timeline dd {
  margin: 0;
  color: #4e443c;
}

.news-list article {
  display: grid;
  grid-template-columns: minmax(120px, 0.24fr) 1fr;
  gap: 6px 32px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line-dark);
}

.news-date {
  color: var(--dim);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.news-list h3 {
  margin: 0;
  color: var(--charcoal);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 560;
  line-height: 1.5;
}

.message-body {
  max-width: 740px;
}

.message-sign {
  margin: 28px 0 0;
  color: var(--charcoal);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
}

@media (max-width: 720px) {
  .info-table div,
  .timeline div,
  .news-list article {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

/* ---------- Contact form ---------- */
.form {
  display: grid;
  gap: 20px;
  max-width: 640px;
  margin-top: 4px;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form label {
  color: var(--charcoal);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.form input,
.form select,
.form textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--charcoal);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--line-dark);
  border-radius: 0;
  transition: border-color 160ms ease, background 160ms ease;
}

.form textarea {
  min-height: 156px;
  resize: vertical;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--crimson);
  background: #fff;
}

.form-note {
  margin: 0;
  color: #6a5d52;
  font-size: 0.82rem;
  line-height: 1.7;
}

.form .button {
  justify-self: start;
}

.doc .button.primary {
  color: var(--paper);
  background: var(--charcoal);
  border-color: var(--charcoal);
}

.doc .button.primary:hover {
  color: var(--charcoal);
  background: var(--gold);
  border-color: var(--gold);
}

.contact-direct {
  margin-top: clamp(42px, 6vw, 74px);
}

/* ---------- Mobile navigation (hamburger overlay) ---------- */
@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-header {
    align-items: center;
  }

  .header-actions {
    flex-direction: row;
    align-items: center;
    gap: 10px;
  }

  .brand {
    margin-top: 0;
  }

  .brand,
  .language-toggle,
  .nav-toggle {
    position: relative;
    z-index: 31;
  }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 30;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    max-width: none;
    padding: 96px 24px 48px;
    background: rgba(11, 10, 9, 0.975);
    backdrop-filter: blur(22px);
    font-size: 1.3rem;
    letter-spacing: 0.14em;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 320ms var(--ease-out), transform 320ms var(--ease-out), visibility 320ms;
    overflow-y: auto;
  }

  .nav a {
    padding: 14px 20px;
    border-bottom: 0;
  }

  .site-header.is-open .nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}