/* ============ 共通セクション ============ */
.section {
  position: relative;
  padding: var(--space-section) var(--space-gutter);
}

.section--washi {
  background: var(--washi);
  color: var(--text-on-washi);
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 1.4rem;
  margin-bottom: clamp(3rem, 2rem + 4vw, 5.5rem);
}

.section__index {
  font-family: var(--font-latin);
  font-size: 2rem;
  font-weight: 300;
  font-style: italic;
  color: var(--gold);
  line-height: 1;
}

.section__label {
  font-size: var(--text-xs);
  letter-spacing: 0.35em;
  color: currentColor;
  opacity: 0.55;
}

/* 文字分割アニメーション用 */
[data-split] .char {
  display: inline-block;
  will-change: transform, opacity;
}

/* ============ ヒーロー ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 var(--space-gutter);
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-base);
}

.hero__grain {
  position: absolute;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  letter-spacing: 0.42em;
  color: var(--gold-soft);
  margin-bottom: clamp(1.5rem, 3vw, 2.8rem);
}

.hero__eyebrow-rule {
  width: clamp(2.5rem, 6vw, 5rem);
  height: 1px;
  background: var(--gold);
}

.hero__title {
  font-size: var(--text-hero);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.22;
  color: var(--washi);
}

.hero__title-line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.08em;
}

.hero__title-line--indent {
  margin-left: clamp(1.5rem, 8vw, 9rem);
}

.hero__sub {
  margin-top: clamp(1.6rem, 3vw, 3rem);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  letter-spacing: 0.18em;
  color: var(--text-on-ink-dim);
}

.hero__vertical {
  position: absolute;
  top: 50%;
  right: calc(var(--space-gutter) * 0.5);
  z-index: 2;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.65em;
  color: var(--text-on-ink-dim);
}

.hero__footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 var(--space-gutter) 2rem;
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  letter-spacing: 0.32em;
  color: var(--text-on-ink-dim);
}

.hero__scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.hero__scroll-line {
  width: 1px;
  height: 64px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2.2s var(--ease-in-out-soft) infinite;
  transform-origin: top;
}

@keyframes scrollPulse {
  0% { transform: scaleY(0); opacity: 1; }
  60% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1); opacity: 0; }
}

@media (max-width: 860px) {
  .hero__vertical { display: none; }
  .hero__footer { justify-content: center; }
  .hero__location, .hero__est { display: none; }
}

/* ============ About ============ */
.about {
  overflow: hidden;
}

.about__statement {
  font-size: var(--text-h2);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.6;
  max-width: 22em;
  margin-bottom: clamp(2.5rem, 2rem + 3vw, 4.5rem);
}

.about__statement-line {
  display: block;
}

.about__statement-line--accent {
  color: var(--gold);
}

.about__body {
  max-width: 38em;
  display: grid;
  gap: 1.4rem;
  color: var(--text-on-ink-dim);
  margin-bottom: clamp(4rem, 3rem + 5vw, 7rem);
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  max-width: 880px;
  border-top: 1px solid var(--line-on-ink);
  padding-top: 2.5rem;
}

.stat__num {
  display: flex;
  align-items: baseline;
  font-family: var(--font-latin);
  font-size: clamp(2.4rem, 1.6rem + 4vw, 4.5rem);
  font-weight: 300;
  color: var(--washi);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat__num em {
  font-style: normal;
  font-size: 0.5em;
  color: var(--gold);
  margin-left: 0.1em;
}

.stat__label {
  display: block;
  margin-top: 0.7rem;
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--text-on-ink-dim);
}

.about__watermark {
  position: absolute;
  bottom: -0.18em;
  right: -0.05em;
  font-family: var(--font-latin);
  font-size: var(--text-watermark);
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0.04em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(236, 229, 216, 0.08);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .about__stats {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }
}

/* ============ Services ============ */
.services__title {
  font-size: var(--text-h2);
  letter-spacing: 0.05em;
  margin-bottom: clamp(3rem, 2rem + 4vw, 5rem);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--line-on-washi);
  border: 1px solid var(--line-on-washi);
}

/* ---- カード全体 ---- */
.service {
  position: relative;
  background: var(--washi);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: color var(--duration-normal) ease;
  cursor: none;
}

/* ---- 写真エリア ---- */
.service__photo {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

.service__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 700ms var(--ease-out-expo);
}

.service:hover .service__photo-img {
  transform: scale(1.07);
}

.service__photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom,
    transparent 40%,
    rgba(28, 24, 19, 0.55) 100%);
  transition: opacity var(--duration-slow) ease;
}

/* ---- コンテンツエリア ---- */
.service__body {
  padding: clamp(1.6rem, 1rem + 2vw, 2.6rem);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.service__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.2rem;
}

.service__num {
  font-family: var(--font-latin);
  font-size: var(--text-sm);
  font-style: italic;
  letter-spacing: 0.25em;
  color: var(--copper);
  transition: color var(--duration-normal) ease;
}

.service:hover .service__num {
  color: var(--gold);
}

.service__icon {
  width: 30px;
  height: 30px;
  color: var(--text-on-washi-dim);
  transition: color var(--duration-normal) ease,
              transform 450ms var(--ease-spring);
}

.service:hover .service__icon {
  color: var(--copper);
  transform: translateY(-3px);
}

.service__name {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 0.9rem + 1vw, 1.6rem);
  letter-spacing: 0.08em;
  color: var(--text-on-washi);
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.service__en {
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  letter-spacing: 0.32em;
  color: var(--text-on-washi-dim);
  opacity: 0.65;
  margin-bottom: 1.1rem;
}

.service__desc {
  font-size: var(--text-sm);
  line-height: 1.95;
  color: var(--text-on-washi-dim);
  margin-bottom: 1.4rem;
}

.service__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-on-washi);
  margin-top: auto;
}

.service__list li {
  position: relative;
  padding-left: 1.2em;
  font-size: var(--text-sm);
  color: var(--text-on-washi-dim);
  line-height: 1.7;
}

.service__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gold);
  font-family: var(--font-latin);
  font-size: 0.7em;
  top: 0.28em;
}

/* ---- hover: 金線ボーダー ---- */
.service::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid var(--gold);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) ease;
  z-index: 2;
}

.service:hover::after {
  opacity: 0.35;
}

@media (max-width: 860px) {
  .services__grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .service__body { padding: 1.4rem; }
}

/* ============ Works（横スクロール） ============ */
.works {
  position: relative;
  background: var(--ink-soft);
}

.works__pin {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: clamp(5rem, 10vh, 8rem) 0 3rem;
}

.section__head--works {
  position: absolute;
  top: clamp(1.8rem, 4vh, 3.5rem);
  left: var(--space-gutter);
  margin-bottom: 0;
}

.works__track {
  display: flex;
  align-items: stretch;
  gap: clamp(2rem, 5vw, 6rem);
  padding: 0 var(--space-gutter);
  width: max-content;
  will-change: transform;
}

.works__intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(78vw, 560px);
  flex-shrink: 0;
}

.works__title {
  font-size: var(--text-h2);
  letter-spacing: 0.05em;
  line-height: 1.55;
  color: var(--washi);
  margin-bottom: 1.6rem;
}

.works__lead {
  font-family: var(--font-latin);
  font-size: var(--text-sm);
  font-style: italic;
  letter-spacing: 0.25em;
  color: var(--gold);
}

.work {
  display: flex;
  flex-direction: column;
  width: min(80vw, 620px);
  flex-shrink: 0;
  cursor: none;
}

.work__visual {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1.8rem;
  transition: transform 600ms var(--ease-out-expo);
}

.work:hover .work__visual {
  transform: scale(1.025);
}

.work__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 700ms var(--ease-out-expo);
  z-index: 0;
}

.work:hover .work__img {
  transform: scale(1.06);
}

.work__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 11, 9, 0.65), rgba(13, 11, 9, 0.15) 50%, transparent);
  z-index: 1;
  transition: opacity var(--duration-slow) ease;
}

.work:hover .work__visual::after {
  opacity: 0.7;
}

/* 金色光晕 — hover 時に輝く */
.work__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: radial-gradient(ellipse at 60% 40%, rgba(201, 168, 106, 0.14), transparent 65%);
  opacity: 0;
  transition: opacity 500ms var(--ease-out-expo);
  pointer-events: none;
}

.work:hover .work__visual::before {
  opacity: 1;
}

.work__tag {
  z-index: 3;
}

.work__visual--a {
  background:
    radial-gradient(120% 110% at 18% 12%, rgba(201, 168, 106, 0.5), transparent 52%),
    radial-gradient(110% 130% at 85% 90%, rgba(168, 113, 78, 0.65), transparent 58%),
    linear-gradient(135deg, #2b241c, #15110c 70%);
}

.work__visual--b {
  background:
    radial-gradient(130% 110% at 80% 14%, rgba(120, 134, 116, 0.55), transparent 55%),
    radial-gradient(110% 120% at 12% 88%, rgba(201, 168, 106, 0.4), transparent 50%),
    linear-gradient(160deg, #1f221c, #100f0b 75%);
}

.work__visual--c {
  background:
    radial-gradient(120% 120% at 22% 85%, rgba(122, 109, 148, 0.45), transparent 55%),
    radial-gradient(120% 100% at 85% 15%, rgba(227, 207, 164, 0.4), transparent 52%),
    linear-gradient(145deg, #221d20, #110e10 75%);
}

.work__tag {
  position: absolute;
  top: 1.1rem;
  left: 1.1rem;
  z-index: 1;
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  color: var(--washi);
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(245, 241, 234, 0.3);
  border-radius: 999px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  background: rgba(13, 11, 9, 0.25);
}

.work__num {
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  font-style: italic;
  letter-spacing: 0.32em;
  color: var(--gold);
}

.work__name {
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--washi);
  margin: 0.5rem 0 0.2rem;
}

.work__place {
  font-size: var(--text-xs);
  letter-spacing: 0.25em;
  color: var(--text-on-ink-dim);
  margin-bottom: 0.9rem;
}

.work__desc {
  font-size: var(--text-sm);
  line-height: 2;
  color: var(--text-on-ink-dim);
  max-width: 34em;
}

.works__end {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 1.4rem;
  width: min(70vw, 480px);
  flex-shrink: 0;
  padding-right: var(--space-gutter);
}

.works__end-text {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  letter-spacing: 0.2em;
  color: var(--text-on-ink-dim);
}

.works__end-link {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  letter-spacing: 0.12em;
  color: var(--washi);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--gold);
}

.works__end-arrow {
  font-family: var(--font-latin);
  transition: transform var(--duration-normal) var(--ease-spring);
}

.works__end-link:hover .works__end-arrow {
  transform: translateX(8px);
}

.works__progress {
  position: absolute;
  bottom: clamp(1.4rem, 3vh, 2.5rem);
  left: var(--space-gutter);
  right: var(--space-gutter);
  height: 1px;
  background: var(--line-on-ink);
}

.works__progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
}

/* ============ Company ============ */
.company__inner {
  max-width: 940px;
}

.company__title {
  font-size: var(--text-h2);
  letter-spacing: 0.08em;
  margin-bottom: clamp(2.5rem, 2rem + 3vw, 4rem);
}

.company__table {
  border-top: 1px solid var(--line-on-washi);
}

.company__row {
  display: grid;
  grid-template-columns: minmax(110px, 180px) 1fr;
  gap: 1rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line-on-washi);
}

.company__row dt {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.2em;
  color: var(--copper);
}

.company__row dd {
  font-size: var(--text-sm);
  line-height: 1.9;
}

.company__dd-en {
  display: block;
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  letter-spacing: 0.25em;
  opacity: 0.55;
  margin-top: 0.2rem;
}

@media (max-width: 560px) {
  .company__row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

/* ============ Contact ============ */
.contact {
  position: relative;
  padding: var(--space-section) var(--space-gutter);
  overflow: hidden;
  background: var(--ink);
}

.contact__canvas {
  position: absolute;
  top: 50%;
  right: -8%;
  width: min(60vw, 640px);
  height: min(60vw, 640px);
  transform: translateY(-50%);
  opacity: 0.85;
  pointer-events: none;
}

.contact__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.contact__label {
  display: block;
  font-family: var(--font-latin);
  font-size: var(--text-xs);
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-bottom: 2rem;
}

.contact__title {
  font-size: var(--text-h2);
  letter-spacing: 0.06em;
  line-height: 1.55;
  color: var(--washi);
  margin-bottom: 1.8rem;
}

.contact__title span {
  display: block;
}

.contact__lead {
  color: var(--text-on-ink-dim);
  max-width: 32em;
  margin-bottom: 3rem;
}

.contact__btn {
  display: inline-flex;
  align-items: center;
  gap: 1.4rem;
  padding: 0.4rem 0.4rem 0.4rem 1.8rem;
  border: 1px solid var(--line-on-ink);
  border-radius: 999px;
  transition: border-color var(--duration-normal) ease,
              background-color var(--duration-normal) ease;
}

.contact__btn:hover {
  border-color: var(--gold);
  background: rgba(201, 168, 106, 0.06);
}

.contact__btn-text {
  font-family: var(--font-latin);
  font-size: clamp(1rem, 0.8rem + 1vw, 1.4rem);
  letter-spacing: 0.12em;
}

.contact__btn-circle {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--ink);
  font-size: 1.2rem;
  transition: transform var(--duration-normal) var(--ease-spring);
}

.contact__btn:hover .contact__btn-circle {
  transform: rotate(-45deg);
}

.contact__tel {
  margin-top: 2.2rem;
  font-size: var(--text-sm);
  color: var(--text-on-ink-dim);
}

.contact__tel a {
  color: var(--washi);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 0.1rem;
  transition: color var(--duration-normal) ease;
}

.contact__tel a:hover {
  color: var(--gold);
}

@media (max-width: 860px) {
  .contact__canvas {
    top: auto;
    bottom: -22%;
    right: -28%;
    width: 90vw;
    height: 90vw;
    transform: none;
    opacity: 0.5;
  }
}