:root {
  --paper: #efebe2;
  --ink: #11110f;
  --soft: #d9d2c5;
  --muted: #6f685f;
  --line: rgba(17, 17, 15, 0.16);
  --dark: #0d0e0c;
  --white: #fffaf0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

img {
  display: block;
}

a,
button {
  color: inherit;
  font: inherit;
}

a {
  text-decoration: none;
}

button {
  border: 0;
}

.loader {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 16px;
  color: var(--paper);
  background: var(--dark);
  overflow: hidden;
}

.loader span {
  display: block;
  font-size: clamp(74px, 17vw, 260px);
  font-weight: 950;
  letter-spacing: -0.11em;
  line-height: 0.76;
}

.loader small,
.kicker,
.topbar nav a,
.brand small,
.hero-index,
.view-item span,
.view-item small,
.view-stage figcaption span,
dt,
.marquee span {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.loader small {
  justify-self: end;
  color: #a58f75;
}

.topbar {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 34px;
  color: var(--white);
  mix-blend-mode: difference;
}

.brand {
  display: grid;
  gap: 2px;
  width: max-content;
}

.brand span {
  font-size: 25px;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.topbar nav {
  display: flex;
  gap: 28px;
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: var(--dark);
}

.hero-media,
.hero-media img,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.18) 56%, rgba(0, 0, 0, 0.48)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.76), transparent 44%);
}

.hero-copy {
  position: absolute;
  left: 34px;
  right: 34px;
  bottom: 78px;
  max-width: 1080px;
  color: var(--white);
}

.kicker {
  margin: 0 0 22px;
  color: #b9aa95;
}

.hero h1 {
  margin: 0;
  max-width: 960px;
  font-size: clamp(54px, 9vw, 144px);
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.hero-copy p:not(.kicker) {
  max-width: 620px;
  margin: 28px 0 0;
  color: rgba(255, 250, 240, 0.76);
  font-size: 17px;
  line-height: 1.9;
}

.hero-index {
  position: absolute;
  right: 34px;
  bottom: 84px;
  display: grid;
  grid-template-columns: auto 80px auto;
  gap: 16px;
  align-items: center;
  color: rgba(255, 250, 240, 0.74);
}

.hero-index i {
  height: 1px;
  background: currentColor;
}

.scene {
  padding: 112px 34px;
}

.section-title {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 80px;
  align-items: end;
  margin-bottom: 42px;
}

h2 {
  margin: 0;
  font-size: clamp(38px, 6vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.viewer {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr) 340px;
  min-height: 72vh;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.viewer-list,
.view-detail {
  padding: 26px 0;
}

.viewer-list {
  border-right: 1px solid var(--line);
}

.view-item {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 4px 14px;
  width: 100%;
  padding: 18px 20px;
  text-align: left;
  background: transparent;
  cursor: pointer;
}

.view-item.is-active,
.view-item:hover {
  background: var(--ink);
  color: var(--paper);
}

.view-item span {
  grid-row: span 2;
  color: #9a8064;
}

.view-item strong {
  font-size: 16px;
}

.view-item small {
  color: var(--muted);
}

.view-item.is-active small,
.view-item:hover small {
  color: #b9aa95;
}

.view-stage {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--dark);
}

.view-stage::before,
.view-stage::after {
  content: "";
  position: absolute;
  z-index: 2;
  pointer-events: none;
}

.view-stage::before {
  inset: 28px;
  border: 1px solid rgba(255, 250, 240, 0.42);
}

.view-stage::after {
  left: 28px;
  right: 28px;
  top: 50%;
  height: 1px;
  background: rgba(255, 250, 240, 0.32);
}

.view-stage img {
  width: 100%;
  height: 100%;
  min-height: 640px;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.view-stage figcaption {
  position: absolute;
  z-index: 3;
  left: 28px;
  bottom: 28px;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 12px 14px;
  color: var(--ink);
  background: rgba(239, 235, 226, 0.92);
}

.view-stage figcaption strong {
  font-size: 14px;
}

.view-detail {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.view-detail h3 {
  margin: 0;
  font-size: 31px;
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.view-detail p:not(.kicker),
.compare-copy p,
.process-list p {
  color: var(--muted);
  line-height: 1.9;
}

.view-detail dl {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--line);
}

.view-detail div {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  font-weight: 800;
}

.compare {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 64px;
  align-items: center;
  background: var(--ink);
  color: var(--paper);
}

.compare-copy {
  max-width: 620px;
}

.comparison {
  position: relative;
  min-height: 620px;
  overflow: hidden;
  background: #2c2b27;
}

.comparison img {
  position: absolute;
  inset: 0;
  width: 62%;
  height: 100%;
  margin-left: auto;
  object-fit: cover;
}

.before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 44%;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.06) 25%, transparent 25%) 0 0 / 28px 28px,
    #22231f;
}

.before span,
.after-label {
  position: absolute;
  top: 22px;
  padding: 10px 12px;
  color: var(--paper);
  background: rgba(0, 0, 0, 0.6);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.before span {
  left: 22px;
}

.after-label {
  right: 22px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--ink);
}

.process-list li {
  min-height: 290px;
  padding: 24px;
  background: var(--paper);
}

.process-list span {
  color: #9a8064;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.process-list h3 {
  margin: 92px 0 14px;
  font-size: 28px;
}

.contact {
  min-height: 58vh;
  display: grid;
  place-content: center;
  text-align: center;
}

.contact h2 {
  max-width: 900px;
}

.contact a {
  justify-self: center;
  margin-top: 34px;
  padding: 18px 28px;
  color: var(--paper);
  background: var(--ink);
  font-weight: 900;
}

.marquee {
  display: flex;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.marquee div {
  display: flex;
  min-width: max-content;
  animation: marquee 26s linear infinite;
}

.marquee span {
  padding: 17px 24px;
  color: var(--muted);
}

@keyframes marquee {
  to {
    transform: translateX(-100%);
  }
}

@media (max-width: 1100px) {
  .viewer,
  .compare {
    grid-template-columns: 1fr;
  }

  .viewer-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .view-detail {
    padding: 28px 0 0;
    border-left: 0;
  }

  .process-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .topbar {
    padding: 18px 20px;
  }

  .topbar nav {
    display: none;
  }

  .hero-copy {
    left: 20px;
    right: 20px;
    bottom: 54px;
  }

  .hero-index {
    display: none;
  }

  .scene {
    padding: 76px 20px;
  }

  .section-title,
  .viewer-list,
  .process-list {
    grid-template-columns: 1fr;
  }

  .viewer {
    min-height: auto;
  }

  .view-stage img {
    min-height: 420px;
  }

  .comparison {
    min-height: 440px;
  }
}