*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-dark: #1a1a1a;
  --clr-gold: #b8860b;
  --clr-light: #f5f5f3;
  --clr-white: #ffffff;
  --clr-muted: #888888;
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-display: 'Bebas Neue', sans-serif;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); color: var(--clr-dark); background: var(--clr-white); line-height: 1.8; }

/* ── Shared ── */
.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--clr-gold);
  margin-bottom: 0.5rem;
}
.section-label--light { color: rgba(255,255,255,0.5); }

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ── Hero ── */
.hero {
  min-height: 100svh;
  background: var(--clr-dark);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  padding: 4rem clamp(2rem, 6vw, 6rem);
  position: relative;
  overflow: hidden;
}

.hero__bg-block {
  position: absolute;
  top: 0; right: 0;
  width: 38%;
  height: 55%;
  background: var(--clr-gold);
  opacity: 0.08;
}

.hero__content { padding-bottom: 2rem; }

.hero__label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--clr-muted);
  margin-bottom: 1.5rem;
}

.hero__year { color: var(--clr-gold); }

.hero__title {
  font-size: clamp(4rem, 14vw, 10rem);
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: 1.5rem;
}

.hero__line {
  width: 3rem;
  height: 2px;
  background: var(--clr-gold);
  margin-bottom: 1.5rem;
}

.hero__sub {
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: var(--clr-muted);
  letter-spacing: 0.1em;
}

.hero__number {
  font-family: var(--font-display);
  font-size: clamp(6rem, 18vw, 14rem);
  color: rgba(255,255,255,0.04);
  line-height: 1;
  align-self: end;
  padding-bottom: 1.5rem;
  user-select: none;
}

/* ── About ── */
.about {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  min-height: 60vh;
}

.about__block-dark {
  background: var(--clr-dark);
  padding: clamp(3rem, 8vw, 6rem) clamp(2rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about__block-dark .about__label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--clr-gold);
  margin-bottom: 0.75rem;
}

.about__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: 0.05em;
}

.about__block-light {
  background: var(--clr-light);
  padding: clamp(3rem, 8vw, 6rem) clamp(2rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2.5rem;
}

.about__body {
  font-size: 0.9375rem;
  color: #444;
  line-height: 2;
}

.about__stats {
  list-style: none;
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.about__stats li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat__num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--clr-dark);
  letter-spacing: 0.05em;
  line-height: 1;
}

.stat__label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--clr-muted);
}

/* ── Services ── */
.services { padding: clamp(3rem, 8vw, 6rem) clamp(2rem, 6vw, 6rem); }

.services__header { margin-bottom: 2.5rem; }

.services__grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.services__item {
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.5rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.services__item--dark { background: var(--clr-dark); color: var(--clr-white); }
.services__item--gold { background: var(--clr-gold); color: var(--clr-white); }
.services__item--light { background: var(--clr-light); color: var(--clr-dark); }

.services__num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  opacity: 0.3;
  line-height: 1;
}

.services__item h3 { font-size: 1.1rem; font-weight: 700; letter-spacing: 0.05em; }
.services__item p { font-size: 0.85rem; opacity: 0.75; line-height: 1.7; }

/* ── Works ── */
.works {
  padding: clamp(3rem, 8vw, 6rem) clamp(2rem, 6vw, 6rem);
  background: var(--clr-white);
}

.works__header { margin-bottom: 2.5rem; }

.works__list { list-style: none; }

.works__item {
  display: grid;
  grid-template-columns: 2rem 1fr auto auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid #e0e0e0;
}

.works__item:first-child { border-top: 1px solid #e0e0e0; }

.works__item-num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--clr-gold);
  letter-spacing: 0.1em;
}

.works__item-name { font-weight: 700; font-size: 1rem; letter-spacing: 0.03em; }

.works__item-type {
  font-size: 0.75rem;
  color: var(--clr-muted);
  letter-spacing: 0.1em;
}

.works__item-year {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--clr-muted);
  letter-spacing: 0.1em;
}

/* ── Contact ── */
.contact {
  background: var(--clr-dark);
  padding: clamp(4rem, 10vw, 8rem) clamp(2rem, 6vw, 6rem);
}

.contact__inner { max-width: 640px; }

.contact__title {
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.contact__sub {
  font-size: 0.875rem;
  color: var(--clr-muted);
  margin-bottom: 3rem;
}

.contact__info { display: flex; flex-direction: column; gap: 1.25rem; }

.contact__tel {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.5rem);
  color: var(--clr-white);
  text-decoration: none;
  letter-spacing: 0.05em;
  line-height: 1;
  transition: color 0.2s;
}
.contact__tel:hover { color: var(--clr-gold); }

.contact__mail {
  font-size: 1rem;
  color: var(--clr-muted);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.contact__mail:hover { color: var(--clr-white); }

.contact__hours {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.1em;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* ── Footer ── */
.footer {
  background: #111;
  padding: 2rem clamp(2rem, 6vw, 6rem);
  display: flex;
  align-items: center;
}

.footer__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  width: 100%;
}

.footer__name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--clr-white);
  letter-spacing: 0.1em;
}

.footer__address {
  font-size: 0.75rem;
  color: #555;
  flex: 1;
}

.footer__copy { font-size: 0.7rem; color: #444; }

/* ── Responsive ── */
@media (max-width: 768px) {

  /* Hero */
  .hero {
    grid-template-columns: 1fr;
    align-items: center;
    min-height: 100svh;
    padding: 5rem 2rem 4rem;
  }
  .hero__bg-block {
    width: 60px;
    height: 60px;
    top: 2rem;
    right: 2rem;
    opacity: 0.25;
  }
  .hero__number { display: none; }
  .hero__title { font-size: clamp(4rem, 20vw, 6rem); }

  /* About */
  .about { grid-template-columns: 1fr; }
  .about__block-dark { padding: 3rem 1.5rem 2.5rem; }
  .about__block-light { padding: 2.5rem 1.5rem 3rem; }
  .about__stats { gap: 1.5rem; }

  /* Services */
  .services { padding: 3rem 1.5rem; }
  .services__grid { grid-template-columns: 1fr; }
  .services__item { padding: 2rem 1.5rem; gap: 0.5rem; }
  .services__item .services__num { font-size: 1.5rem; margin-bottom: 0.25rem; }
  .services__item h3 { font-size: 1rem; }

  /* Works */
  .works { padding: 3rem 1.5rem; }
  .works__item {
    grid-template-columns: 2rem 1fr auto;
    gap: 0.75rem;
    padding: 1.25rem 0;
  }
  .works__item-type { font-size: 0.7rem; }
  .works__item-year { display: none; }

  /* Contact */
  .contact { padding: 4rem 1.5rem; }
  .contact__tel { font-size: clamp(2rem, 12vw, 3rem); }

  /* Footer */
  .footer { padding: 2rem 1.5rem; }
  .footer__inner { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .footer__address { font-size: 0.7rem; }
}