:root {
  --blue: #1565C0;
  --blue-dark: #0D47A1;
  --blue-mid: #1976D2;
  --blue-light: #E3F2FD;
  --blue-accent: #42A5F5;
  --white: #ffffff;
  --text: #1a1a2e;
  --text-light: #555;
  --text-muted: #888;
  --bg-section: #f4f8fe;
  --shadow: 0 4px 24px rgba(21,101,192,0.10);
  --radius: 8px;
  --transition: 0.3s ease;
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Montserrat', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-ja); color: var(--text); background: var(--white); line-height: 1.8; overflow-x: hidden; }
img { display: block; width: 100%; height: auto; object-fit: cover; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: 90%; max-width: 1100px; margin: 0 auto; }
.section { padding: 100px 0; }
.section--blue { background: var(--blue-dark); color: var(--white); }
.section--light { background: var(--bg-section); }

.section-header { text-align: center; margin-bottom: 60px; }
.section-header__en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--blue-accent);
  margin-bottom: 8px;
  font-weight: 600;
  text-transform: uppercase;
}
.section-header__ja { font-size: 1.9rem; font-weight: 700; letter-spacing: 0.05em; }
.section--blue .section-header__ja { color: var(--white); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.btn--primary { background: var(--blue); color: var(--white); }
.btn--primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(21,101,192,0.35); }
.btn--outline { background: transparent; border-color: var(--white); color: var(--white); }
.btn--outline:hover { background: var(--white); color: var(--blue); transform: translateY(-2px); }
.btn--submit { width: 100%; padding: 16px; background: var(--blue); color: var(--white); font-size: 1rem; font-weight: 600; border: none; border-radius: 50px; cursor: pointer; transition: all var(--transition); }
.btn--submit:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(21,101,192,0.35); }

/* Header */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 100; transition: all var(--transition); }
.header.scrolled { background: rgba(13,71,161,0.97); backdrop-filter: blur(10px); box-shadow: 0 2px 20px rgba(0,0,0,0.2); }
.header__inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 5%; }
.header__logo { font-family: var(--font-en); font-size: 1.3rem; font-weight: 700; color: var(--white); letter-spacing: 0.1em; line-height: 1.2; }
.header__logo span { display: block; font-size: 0.65rem; font-weight: 400; opacity: 0.8; letter-spacing: 0.15em; }
.header__nav ul { display: flex; gap: 28px; }
.header__nav a { font-size: 0.82rem; color: rgba(255,255,255,0.88); transition: color var(--transition); font-weight: 500; }
.header__nav a:hover { color: var(--white); }
.btn--header { padding: 10px 22px; font-size: 0.78rem; }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); transition: transform var(--transition), opacity var(--transition); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sp-nav { display: none; position: absolute; top: 100%; left: 0; width: 100%; background: rgba(13,71,161,0.98); padding: 20px 0 32px; }
.sp-nav.open { display: block; }
.sp-nav ul { text-align: center; }
.sp-nav li { padding: 12px 0; }
.sp-nav__link { font-size: 1rem; color: rgba(255,255,255,0.9); font-weight: 500; }
.sp-nav__link--cta { display: inline-block; margin-top: 8px; padding: 12px 40px; background: var(--white); color: var(--blue); border-radius: 50px; font-weight: 700; }

/* Hero */
.hero { position: relative; height: 100vh; min-height: 620px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0;
  background-image: url('https://images.unsplash.com/photo-1576091160550-2173dba999ef?w=1600&q=80');
  background-size: cover; background-position: center;
  filter: brightness(0.38);
}
.hero__overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(13,71,161,0.6) 0%, rgba(21,101,192,0.3) 100%); }
.hero__content { position: relative; text-align: center; color: var(--white); z-index: 1; padding: 0 20px; }
.hero__badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  margin-bottom: 24px;
  font-family: var(--font-en);
  font-weight: 600;
}
.hero__title { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 900; line-height: 1.25; margin-bottom: 20px; letter-spacing: 0.05em; }
.hero__title em { font-style: normal; color: var(--blue-accent); }
.hero__catch { font-size: clamp(0.85rem, 2vw, 1rem); color: rgba(255,255,255,0.85); margin-bottom: 40px; letter-spacing: 0.1em; }
.hero__btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero__tags { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 48px; }
.hero__tag {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.9);
}
.hero__scroll {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.55); font-family: var(--font-en); font-size: 0.65rem; letter-spacing: 0.2em;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Features (3つの強み) */
.features { background: var(--white); }
.features__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 32px; }
.feature-card {
  text-align: center;
  padding: 48px 32px;
  border-radius: var(--radius);
  background: var(--bg-section);
  border-top: 4px solid var(--blue);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-card__icon { font-size: 2.4rem; color: var(--blue); margin-bottom: 20px; }
.feature-card__num { font-family: var(--font-en); font-size: 0.7rem; color: var(--blue-accent); letter-spacing: 0.2em; font-weight: 700; margin-bottom: 12px; }
.feature-card__title { font-size: 1.15rem; font-weight: 700; margin-bottom: 14px; }
.feature-card__desc { font-size: 0.87rem; color: var(--text-light); line-height: 1.9; }

/* Services */
.services__grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.service-card {
  display: flex;
  gap: 24px;
  padding: 32px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.service-card:hover { border-color: var(--blue-accent); background: rgba(66,165,245,0.08); transform: translateY(-4px); }
.service-card__icon { flex-shrink: 0; width: 56px; height: 56px; background: rgba(66,165,245,0.15); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--blue-accent); }
.service-card__body {}
.service-card__name { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.service-card__desc { font-size: 0.83rem; color: rgba(255,255,255,0.65); line-height: 1.8; margin-bottom: 12px; }
.service-card__price { font-family: var(--font-en); font-size: 1.2rem; color: var(--blue-accent); font-weight: 700; }
.service-card__price small { font-size: 0.75rem; font-weight: 400; margin-left: 2px; }
.services__note { text-align: center; margin-top: 32px; font-size: 0.8rem; color: rgba(255,255,255,0.5); }

/* Booking */
.booking { background: var(--white); }
.booking__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.booking__label { font-size: 0.78rem; font-weight: 700; color: var(--blue); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 12px; }
.booking__subtitle { font-size: 1.5rem; font-weight: 700; margin-bottom: 16px; line-height: 1.4; }
.booking__desc { font-size: 0.9rem; color: var(--text-light); line-height: 1.9; margin-bottom: 24px; }
.booking__plugin-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--blue-light);
  color: var(--blue-dark);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 8px;
}

/* Calendar */
.cal { background: var(--white); border: 1px solid #e0e8f5; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.cal__header { background: var(--blue); color: var(--white); padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; }
.cal__header h3 { font-size: 1rem; font-weight: 700; }
.cal__nav { background: none; border: none; color: white; font-size: 1.1rem; cursor: pointer; padding: 4px 8px; border-radius: 4px; transition: background var(--transition); }
.cal__nav:hover { background: rgba(255,255,255,0.2); }
.cal__weekdays { display: grid; grid-template-columns: repeat(7,1fr); background: var(--blue-light); }
.cal__weekday { text-align: center; font-size: 0.72rem; font-weight: 700; color: var(--blue-dark); padding: 8px 0; }
.cal__days { display: grid; grid-template-columns: repeat(7,1fr); padding: 8px; gap: 4px; }
.cal__day {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 500;
}
.cal__day:not(.cal__day--empty):not(.cal__day--past):hover { background: var(--blue-light); color: var(--blue); }
.cal__day--past { color: #ccc; cursor: default; }
.cal__day--empty { cursor: default; }
.cal__day--available { position: relative; }
.cal__day--available::after { content: ''; position: absolute; bottom: 3px; left: 50%; transform: translateX(-50%); width: 5px; height: 5px; background: var(--blue-accent); border-radius: 50%; }
.cal__day.selected { background: var(--blue) !important; color: white !important; }
.cal__day.selected::after { background: white; }

/* Time slots */
.time-panel { margin-top: 20px; }
.time-panel__title { font-size: 0.88rem; font-weight: 700; color: var(--blue-dark); margin-bottom: 12px; }
#selectedDate { color: var(--blue); }
.time-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin-bottom: 16px; }
.time-slot {
  text-align: center; padding: 10px 4px; border: 1.5px solid var(--blue-light);
  border-radius: 6px; font-size: 0.78rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition); color: var(--blue-dark); background: var(--white);
}
.time-slot:hover { border-color: var(--blue); background: var(--blue-light); }
.time-slot.selected { background: var(--blue); color: white; border-color: var(--blue); }
.time-slot--full { background: #f5f5f5; color: #bbb; cursor: not-allowed; border-color: #eee; text-decoration: line-through; }

#bookingForm { display: none; margin-top: 16px; }
.booking-input { width: 100%; padding: 12px 14px; border: 1.5px solid #d0ddf0; border-radius: 8px; font-family: var(--font-ja); font-size: 0.88rem; outline: none; transition: border-color var(--transition); margin-bottom: 10px; }
.booking-input:focus { border-color: var(--blue); }

/* Q&A */
.accordion { max-width: 760px; margin: 0 auto; }
.accordion__item { border-bottom: 1px solid rgba(255,255,255,0.12); }
.accordion__q { width: 100%; background: none; border: none; padding: 22px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; cursor: pointer; color: var(--white); font-family: var(--font-ja); font-size: 0.95rem; text-align: left; transition: color var(--transition); }
.accordion__q:hover { color: var(--blue-accent); }
.accordion__icon { flex-shrink: 0; font-size: 0.85rem; color: var(--blue-accent); transition: transform var(--transition); }
.accordion__item.open .accordion__icon { transform: rotate(45deg); }
.accordion__a { overflow: hidden; max-height: 0; transition: max-height 0.4s ease; }
.accordion__item.open .accordion__a { max-height: 300px; }
.accordion__a p { padding: 0 0 22px; color: rgba(255,255,255,0.65); font-size: 0.88rem; line-height: 1.9; }

/* Access */
.access { background: var(--bg-section); }
.access__body { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: stretch; }
.access__dl { display: flex; flex-direction: column; }
.access__row { padding: 16px 0; border-bottom: 1px solid #dce8f5; display: grid; grid-template-columns: 110px 1fr; gap: 16px; align-items: start; }
.access__row dt { font-size: 0.83rem; font-weight: 700; color: var(--blue); display: flex; align-items: center; gap: 6px; }
.access__row dd { font-size: 0.88rem; color: var(--text-light); }
.access__row dd a { color: var(--blue); text-decoration: underline; }
.access__map { min-height: 360px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.access__map iframe { width: 100%; height: 100%; min-height: 360px; border: 0; }

/* CTA Banner */
.cta-banner { background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%); padding: 80px 0; text-align: center; color: white; }
.cta-banner h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; margin-bottom: 12px; }
.cta-banner p { font-size: 0.95rem; opacity: 0.85; margin-bottom: 36px; }
.cta-banner__btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn--white { background: white; color: var(--blue); border: none; font-weight: 700; }
.btn--white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

/* Footer */
.footer { background: #0a1929; padding: 48px 0 28px; color: rgba(255,255,255,0.5); }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center; }
.footer__logo { font-family: var(--font-en); font-size: 1.4rem; font-weight: 800; color: var(--white); letter-spacing: 0.1em; }
.footer__logo span { display: block; font-size: 0.65rem; font-weight: 400; opacity: 0.6; margin-top: 2px; letter-spacing: 0.15em; }
.footer__nav { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer__nav a { font-size: 0.78rem; letter-spacing: 0.1em; color: rgba(255,255,255,0.5); transition: color var(--transition); }
.footer__nav a:hover { color: var(--white); }
.footer__copy { font-size: 0.72rem; }

/* Page Top */
.pagetop { position: fixed; bottom: 28px; right: 28px; width: 48px; height: 48px; background: var(--blue); color: white; display: flex; align-items: center; justify-content: center; border-radius: 50%; opacity: 0; pointer-events: none; transition: opacity var(--transition), transform var(--transition); z-index: 90; box-shadow: 0 4px 16px rgba(21,101,192,0.4); }
.pagetop.visible { opacity: 1; pointer-events: all; }
.pagetop:hover { transform: translateY(-4px); }

/* Responsive */
@media (max-width: 960px) {
  .header__nav, .btn--header { display: none; }
  .hamburger { display: flex; }
  .features__grid { grid-template-columns: repeat(2,1fr); }
  .services__grid { grid-template-columns: 1fr; }
  .booking__inner { grid-template-columns: 1fr; }
  .access__body { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .section { padding: 70px 0; }
  .section-header { margin-bottom: 40px; }
  .section-header__ja { font-size: 1.45rem; }
  .features__grid { grid-template-columns: 1fr; }
  .hero__btns { flex-direction: column; align-items: center; }
  .time-grid { grid-template-columns: repeat(3,1fr); }
  .pagetop { bottom: 18px; right: 18px; width: 42px; height: 42px; }
}