:root {
  --bg: #0A0906;
  --bg-2: #14100C;
  --bg-3: #1C1610;
  --paper: #F2E8D5;
  --paper-dim: rgba(242,232,213,0.65);
  --gold: #BFA169;
  --gold-l: #D9BE82;
  --gold-d: #7A6535;
  --line: rgba(191,161,105,0.15);
  --serif: 'Cormorant Garamond', serif;
  --jp-mincho: 'Shippori Mincho', serif;
  --jp-serif: 'Noto Serif JP', serif;
  --sans: 'Inter', sans-serif;
  --ease: cubic-bezier(.2,.9,.3,1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--jp-serif);
  background: var(--bg);
  color: var(--paper);
  line-height: 1.8;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

/* kicker */
.kicker {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.78rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* sec-title */
.sec-title {
  font-family: var(--jp-mincho);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.2;
  margin-bottom: 12px;
}

.sec-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.88rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 64px;
}

.sec-head { margin-bottom: 0; }

/* === Scroll Reveal === */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .1s; }
.reveal-d2 { transition-delay: .2s; }
.reveal-d3 { transition-delay: .3s; }

/* === Nav === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 24px 0;
  transition: background .4s, padding .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10,9,6,0.92);
  backdrop-filter: blur(12px);
  padding: 16px 0;
  border-color: var(--line);
}
.nav__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-family: var(--jp-mincho);
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  color: var(--gold-l);
}
.nav__links {
  display: flex;
  gap: 36px;
}
.nav__links a {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--paper-dim);
  transition: color .25s;
}
.nav__links a:hover { color: var(--gold-l); }

/* === Hero === */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
  transform: scale(1.04);
  transition: transform 8s ease;
}
.hero:hover .hero__bg { transform: scale(1); }
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(10,9,6,0.55) 0%,
    rgba(10,9,6,0.3) 50%,
    rgba(10,9,6,0.72) 100%
  );
}
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}
.hero__kicker {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--gold-l);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp .9s var(--ease) .3s forwards;
}
.hero__title {
  font-family: var(--jp-mincho);
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 500;
  letter-spacing: 0.15em;
  line-height: 1.25;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp .9s var(--ease) .5s forwards;
}
.hero__sub {
  font-family: var(--jp-mincho);
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: rgba(242,232,213,0.75);
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp .9s var(--ease) .7s forwards;
}
.hero__cta {
  display: inline-block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.82rem;
  letter-spacing: 0.25em;
  color: var(--bg);
  background: var(--gold);
  padding: 14px 36px;
  transition: background .3s, transform .3s;
  opacity: 0;
  animation: fadeUp .9s var(--ease) .9s forwards;
}
.hero__cta:hover {
  background: var(--gold-l);
  transform: translateY(-2px);
}
.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  transition: opacity .4s;
}
.hero__scroll span {
  display: block;
  width: 1px;
  height: 64px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  margin: 0 auto;
  animation: scrollLine 2s ease infinite;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* === About === */
.about {
  padding: 140px 0;
  background: var(--bg-2);
  position: relative;
}
.about::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--line);
}
.about__grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 80px;
  align-items: start;
}
.about__img {
  position: sticky;
  top: 120px;
}
.about__img img {
  width: 180px;
  height: 180px;
  object-fit: contain;
  filter: drop-shadow(0 8px 32px rgba(191,161,105,0.2));
}
.about__body { padding-top: 8px; }
.about__handle {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 28px;
}
.about__text {
  font-family: var(--jp-mincho);
  font-size: 0.9rem;
  color: var(--paper-dim);
  line-height: 2;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}
.about__tags span {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 6px 14px;
  border: 1px solid var(--line);
  color: var(--gold);
  transition: border-color .25s, background .25s;
}
.about__tags span:hover {
  border-color: var(--gold);
  background: rgba(191,161,105,0.08);
}

/* === Works === */
.works {
  padding: 140px 0;
  background: var(--bg);
}
.works__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 0;
}

.work-card {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--line);
  transition: border-color .4s;
}
.work-card:hover { border-color: rgba(191,161,105,0.45); }
.work-card__img {
  width: 100%;
  aspect-ratio: 16/9;
  background-size: cover;
  background-position: center;
  transition: transform .7s var(--ease);
}
.work-card:hover .work-card__img { transform: scale(1.04); }
.work-card__body {
  padding: 28px 28px 32px;
}
.work-card__num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--gold-d);
  margin-bottom: 6px;
}
.work-card__cat {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--gold-d);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.work-card__name {
  font-family: var(--jp-mincho);
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.2;
  margin-bottom: 2px;
}
.work-card__name-jp {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 14px;
}
.work-card__desc {
  font-family: var(--jp-mincho);
  font-size: 0.8rem;
  color: var(--paper-dim);
  line-height: 1.8;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.work-card__link {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  transition: letter-spacing .3s;
}
.work-card:hover .work-card__link { letter-spacing: 0.25em; }

/* === Process === */
.process {
  padding: 140px 0;
  background: var(--bg-2);
  position: relative;
}
.process::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--line);
}
.process__steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 80px;
}
.process__step {
  display: flex;
  gap: 24px;
  padding: 40px 36px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  transition: border-color .3s;
}
.process__step:hover { border-color: rgba(191,161,105,0.35); }
.process__num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 2.4rem;
  font-weight: 400;
  line-height: 1;
  color: var(--gold-d);
  flex-shrink: 0;
  width: 48px;
}
.process__body h3 {
  font-family: var(--jp-mincho);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.process__body p {
  font-family: var(--jp-mincho);
  font-size: 0.82rem;
  color: var(--paper-dim);
  line-height: 1.9;
  letter-spacing: 0.04em;
}

/* === Contact === */
.contact {
  padding: 140px 0;
  background: var(--bg);
  text-align: center;
}
.contact__links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 48px;
}
.contact__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border: 1px solid var(--line);
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--gold-l);
  transition: border-color .25s, color .25s, background .25s;
}
.contact__link:hover {
  border-color: var(--gold);
  color: var(--paper);
  background: rgba(191,161,105,0.08);
}
.contact__link-icon { font-size: 1rem; }

/* === Footer === */
.ft {
  padding: 32px 0;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.ft__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: rgba(242,232,213,0.3);
}

/* === Responsive === */
@media (max-width: 768px) {
  .wrap { padding: 0 20px; }
  .nav__links { display: none; }
  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about__img { position: static; }
  .about__img img { width: 120px; height: 120px; }
  .works__grid { grid-template-columns: 1fr; }
  .process__steps { grid-template-columns: 1fr; }
  .ft__inner { flex-direction: column; gap: 8px; text-align: center; }
  .hero__title { font-size: 2.2rem; }
}