/* ===========================
   Reset & Base
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --dark:      #0A0A0A;
  --dark-2:    #111111;
  --dark-3:    #191919;
  --dark-4:    #222222;
  --border:    #2A2A2A;
  --border-lt: #383838;
  --text:      #EEEBE5;
  --muted:     #888880;
  --gold:      #E8C56A;
  --gold-lt:   #F2D78C;
  --gold-dim:  rgba(232,197,106,0.14);
  --coral:     #FF7B72;
  --coral-lt:  #FFA39B;
  --mint:      #6EE7B7;
  --white:     #FFFFFF;

  --font-en: 'Montserrat', sans-serif;
  --font-ja: 'Noto Sans JP', sans-serif;
  --transition: 0.35s ease;
  --shadow:    0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.7);
  --radius: 12px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ja);
  color: var(--text);
  background: var(--dark);
  line-height: 1.8;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

.sp-none { display: inline; }

/* ===========================
   Button
=========================== */
.btn {
  display: inline-block;
  padding: 14px 44px;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: all var(--transition);
  cursor: pointer;
}

.btn {
  border-radius: 50px;
}

.btn--primary {
  background: transparent;
  color: var(--gold);
  border: 1.5px solid var(--gold);
  position: relative;
  overflow: hidden;
}

.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold) 0%, var(--coral) 100%);
  transform: translateX(-101%);
  transition: transform 0.4s ease;
  z-index: -1;
}

.btn--primary:hover {
  color: var(--dark);
  border-color: transparent;
}

.btn--primary:hover::before {
  transform: translateX(0);
}

/* ===========================
   Section Header (Services / Locations / Company)
=========================== */
.section-header {
  margin-bottom: 64px;
}

.section-header__label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-header__title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.04em;
  position: relative;
  padding-bottom: 24px;
}

.section-header__title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--coral) 100%);
  border-radius: 2px;
}

/* ===========================
   Header / Nav
=========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(10, 10, 10, 0.95);
  border-bottom-color: var(--border);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 5%;
  max-width: 1300px;
  margin: 0 auto;
}

.nav__logo-img {
  height: 38px;
  width: auto;
}

.nav__menu {
  display: flex;
  gap: 40px;
  list-style: none;
  align-items: center;
}

.nav__link {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--transition);
  position: relative;
}

.nav__link:hover { color: var(--text); }

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--transition);
}

.nav__link:hover::after { width: 100%; }

.nav__link--cta {
  color: var(--gold);
  border: 1px solid var(--border-lt);
  padding: 8px 22px;
  letter-spacing: 0.15em;
  border-radius: 50px;
  transition: all var(--transition);
}

.nav__link--cta::after { display: none; }

.nav__link--cta:hover {
  background: var(--gold);
  color: var(--dark);
  border-color: var(--gold);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text);
  transition: all var(--transition);
}

/* ===========================
   Hero
=========================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 75% 40%, rgba(201,168,76,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 80% at 15% 80%, rgba(255,255,255,0.015) 0%, transparent 55%),
    var(--dark);
}

/* Subtle grid overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.25;
  pointer-events: none;
}

.hero__watermark {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-52%);
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(280px, 38vw, 580px);
  background: linear-gradient(135deg, rgba(232,197,106,0.12) 0%, rgba(255,123,114,0.08) 50%, rgba(110,231,183,0.06) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  -webkit-text-stroke: 1px rgba(232,197,106,0.1);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 0 5%;
  max-width: 860px;
  margin: 0 auto 0 5%;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.hero__line {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

.hero__eyebrow-text {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 28px;
  letter-spacing: 0.03em;
  color: var(--text);
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold) 0%, var(--coral) 60%, var(--gold-lt) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 6s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.hero__desc {
  font-size: clamp(0.9rem, 1.6vw, 1rem);
  color: var(--muted);
  line-height: 2;
  margin-bottom: 48px;
  letter-spacing: 0.04em;
}

.hero__scroll {
  position: absolute;
  bottom: 48px;
  left: 5%;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--border-lt);
}

.hero__scroll span {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--border-lt);
  position: relative;
  overflow: hidden;
}

.hero__scroll span::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gold);
  animation: scrollSlide 2s ease infinite;
}

.hero__scroll p {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

@keyframes scrollSlide {
  0%   { left: -100%; }
  100% { left: 100%; }
}

/* ===========================
   Concept
=========================== */
.concept {
  padding: 140px 0 120px;
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.concept__inner {
  display: flex;
  gap: 80px;
  align-items: flex-start;
}

.concept__left {
  flex: 0 0 160px;
  text-align: left;
}

.concept__label {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.concept__num {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: clamp(5rem, 9vw, 9rem);
  color: transparent;
  -webkit-text-stroke: 1px var(--border-lt);
  line-height: 1;
}

.concept__right {
  flex: 1;
  padding-top: 12px;
}

.concept__heading {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 36px;
  letter-spacing: 0.04em;
}

.concept__heading span {
  background: linear-gradient(135deg, var(--gold) 0%, var(--coral) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.concept__copy {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 2.1;
  margin-bottom: 20px;
}

/* ===========================
   Services
=========================== */
.services {
  padding: 140px 0 120px;
  background: var(--dark);
}

.services__list {
  display: flex;
  flex-direction: column;
}

.service-item {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: center;
  padding: 60px 0;
  border-top: 1px solid var(--border);
  transition: border-color var(--transition);
  position: relative;
}

.service-item:last-child {
  border-bottom: 1px solid var(--border);
}

.service-item:hover {
  border-color: var(--border-lt);
}

/* Alternate accent colors */
.service-item:nth-child(1) { --accent: var(--gold); }
.service-item:nth-child(2) { --accent: var(--coral); }
.service-item:nth-child(3) { --accent: var(--mint); }

.service-item__num {
  display: block;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 4rem;
  color: transparent;
  -webkit-text-stroke: 1px var(--border-lt);
  line-height: 1;
  margin-bottom: 16px;
  transition: -webkit-text-stroke-color var(--transition), color var(--transition);
}

.service-item:hover .service-item__num {
  -webkit-text-stroke-color: var(--accent);
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
}

.service-item__title {
  font-size: clamp(1.3rem, 2.2vw, 1.8rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.service-item__desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 2;
  max-width: 520px;
}

.service-item__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

.service-item__img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 70%);
  opacity: 0;
  mix-blend-mode: overlay;
  transition: opacity var(--transition);
  pointer-events: none;
}

.service-item:hover .service-item__img::after {
  opacity: 0.6;
}

.service-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.92) saturate(1.1);
  transition: transform 0.7s ease, filter 0.5s ease;
}

.service-item:hover .service-item__img img {
  transform: scale(1.05);
  filter: brightness(1) saturate(1.2);
}

/* ===========================
   Locations
=========================== */
.locations {
  padding: 120px 0 140px;
  background: var(--dark-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.locations__list {
  display: flex;
  flex-direction: column;
}

.location-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
  cursor: default;
}

.location-item:first-child {
  border-top: 1px solid var(--border);
}

.location-item:hover {
  padding-left: 12px;
  border-color: var(--border-lt);
}

.location-item__num {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-lt);
  transition: all var(--transition);
}

.location-item:hover .location-item__num {
  background: var(--gold);
  color: var(--dark);
  border-color: var(--gold);
}

.location-item:nth-child(2):hover .location-item__num { background: var(--coral); border-color: var(--coral); }
.location-item:nth-child(3):hover .location-item__num { background: var(--mint); border-color: var(--mint); }
.location-item:nth-child(4):hover .location-item__num { background: var(--gold-lt); border-color: var(--gold-lt); }
.location-item:nth-child(5):hover .location-item__num { background: var(--coral-lt); border-color: var(--coral-lt); }

.location-item__address {
  flex: 1;
  font-size: 1rem;
  color: var(--text);
  letter-spacing: 0.04em;
  font-weight: 500;
}

.location-item__arrow {
  font-family: var(--font-en);
  font-size: 1rem;
  color: var(--border-lt);
  transition: color var(--transition), transform var(--transition);
  flex-shrink: 0;
}

.location-item:hover .location-item__arrow {
  color: var(--gold);
  transform: translateX(4px);
}

/* ===========================
   Company
=========================== */
.company {
  padding: 120px 0 140px;
  background: var(--dark);
}

.company__inner {
  max-width: 800px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.company__table {
  width: 100%;
  border-collapse: collapse;
}

.company__table tr {
  border-bottom: 1px solid var(--border);
}

.company__table tr:last-child {
  border-bottom: none;
}

.company__table th,
.company__table td {
  padding: 26px 36px;
  font-size: 0.92rem;
  text-align: left;
  vertical-align: middle;
}

.company__table th {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  white-space: nowrap;
  width: 34%;
  border-right: 1px solid var(--border);
  background: var(--dark-2);
}

.company__table td {
  color: var(--text);
  background: var(--dark);
  letter-spacing: 0.04em;
}

.company__table td a {
  color: var(--muted);
  border-bottom: 1px solid var(--border-lt);
  padding-bottom: 1px;
  transition: color var(--transition), border-color var(--transition);
}

.company__table td a:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* ===========================
   Contact
=========================== */
.contact {
  padding: 120px 0 140px;
  background: var(--dark-2);
  border-top: 1px solid var(--border);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact__label {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.contact__title {
  font-size: clamp(1.8rem, 3.2vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
  line-height: 1.3;
}

.contact__desc {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 2;
}

.contact__right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 28px;
  border: 1px solid var(--border);
  background: var(--dark-3);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--gold);
  background: var(--gold-dim);
  transform: translateY(-3px);
}

.contact-card:nth-child(2):hover {
  border-color: var(--coral);
  background: rgba(255,123,114,0.1);
}

.contact-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  border: 1px solid var(--border-lt);
  border-radius: 50%;
  transition: all var(--transition);
}

.contact-card:hover .contact-card__icon {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--dark);
}

.contact-card:nth-child(2):hover .contact-card__icon {
  background: var(--coral);
  border-color: var(--coral);
}

.contact-card:nth-child(2) .contact-card__icon {
  color: var(--coral);
}

.contact-card__icon svg {
  width: 20px;
  height: 20px;
}

.contact-card__body {
  flex: 1;
}

.contact-card__label {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.contact-card__value {
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.06em;
}

.contact-card__arrow {
  font-size: 1rem;
  color: var(--border-lt);
  transition: color var(--transition), transform var(--transition);
}

.contact-card:hover .contact-card__arrow {
  color: var(--gold);
  transform: translateX(4px);
}

/* ===========================
   Footer
=========================== */
.footer {
  background: var(--dark);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__logo {
  height: 34px;
  width: auto;
}

.footer__copy {
  font-family: var(--font-en);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ===========================
   Scroll Animation
=========================== */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.services__list .service-item:nth-child(2) { transition-delay: 0.08s; }
.services__list .service-item:nth-child(3) { transition-delay: 0.16s; }
.locations__list .location-item:nth-child(2) { transition-delay: 0.05s; }
.locations__list .location-item:nth-child(3) { transition-delay: 0.10s; }
.locations__list .location-item:nth-child(4) { transition-delay: 0.15s; }
.locations__list .location-item:nth-child(5) { transition-delay: 0.20s; }

/* ===========================
   Responsive — Tablet (≤900px)
=========================== */
@media (max-width: 900px) {
  .concept__inner {
    flex-direction: column;
    gap: 40px;
  }

  .concept__left {
    flex: none;
    display: flex;
    align-items: center;
    gap: 24px;
  }

  .concept__num {
    font-size: 5rem;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0;
  }

  .service-item__img {
    max-width: 480px;
    width: 100%;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .sp-none { display: none; }
}

/* ===========================
   Responsive — Mobile (≤640px)
=========================== */
@media (max-width: 640px) {
  /* Nav */
  .nav { padding: 18px 5%; }

  .nav__hamburger {
    display: flex;
    z-index: 200;
  }

  .nav__hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav__hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  .nav__hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav__menu {
    position: fixed;
    inset: 0;
    background: rgba(10,10,10,0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    transform: translateX(100%);
    transition: transform var(--transition);
    border: none;
  }

  .nav__menu.open {
    transform: translateX(0);
  }

  .nav__link {
    font-size: 1.1rem;
    color: var(--text) !important;
    letter-spacing: 0.2em;
  }

  .nav__link--cta {
    border-color: var(--gold);
    color: var(--gold) !important;
    padding: 12px 40px;
  }

  /* Hero */
  .hero__content {
    margin: 0;
    padding: 0 6%;
  }

  .hero__title { font-size: 2rem; }

  .hero__scroll {
    left: 6%;
    bottom: 36px;
  }

  /* Concept */
  .concept { padding: 80px 0 80px; }

  .concept__left {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .concept__num { font-size: 3.5rem; }

  /* Services */
  .services { padding: 80px 0 80px; }

  .service-item { padding: 40px 0; }

  /* Locations */
  .locations { padding: 80px 0 80px; }

  .location-item__address { font-size: 0.9rem; }

  /* Company */
  .company { padding: 80px 0 80px; }

  .company__table th,
  .company__table td {
    padding: 18px 20px;
    font-size: 0.85rem;
    display: block;
    width: 100%;
  }

  .company__table th {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
  }

  .company__table td { padding-top: 12px; }
  .company__table tr { display: block; }

  /* Contact */
  .contact { padding: 80px 0 80px; }

  .contact-card { padding: 22px 20px; }

  /* Footer */
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  /* Section header */
  .section-header { margin-bottom: 48px; }
}