:root {
  --color-primary: #4a1870;
  --color-primary-light: #5a2080;
  --color-secondary: #6a3090;
  --color-accent: #c8a030;
  --color-accent-hover: #b08820;
  --color-accent-light: #e8c868;
  --color-bg: #ffffff;
  --color-bg-alt: #f8f4fc;
  --color-bg-dark: #1a0830;
  --color-text: #1a1030;
  --color-text-light: #5a4070;
  --color-text-on-dark: #ffffff;
  --color-border: #d8c8ec;
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(74,24,112,0.1);
  --shadow-md: 0 4px 12px rgba(74,24,112,0.14);
  --shadow-lg: 0 8px 24px rgba(74,24,112,0.18);
  --container-width: 1100px;
  --header-height: 68px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body { font-family: var(--font-sans); color: var(--color-text); background: var(--color-bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }

.container { max-width: var(--container-width); margin-inline: auto; padding-inline: var(--space-md); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header { position: sticky; top: 0; z-index: 100; background: var(--color-primary); border-bottom: 3px solid var(--color-accent); box-shadow: var(--shadow-md); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); gap: var(--space-md); }
.site-logo { text-decoration: none; color: #fff; flex-shrink: 0; }
.site-logo__main { display: block; font-family: var(--font-serif); font-size: 1.1rem; font-weight: 700; }
.site-logo__sub { display: block; font-size: 0.63rem; color: #c0a8e0; }
.site-nav__list { display: flex; list-style: none; gap: var(--space-md); }
.site-nav__link { text-decoration: none; color: #c0a8e0; font-size: 0.9rem; font-weight: 700; padding: var(--space-xs) 0; border-bottom: 2px solid transparent; transition: color 0.2s, border-color 0.2s; }
.site-nav__link:hover, .site-nav__link.is-active { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.hamburger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; background: none; border: 1px solid rgba(255,255,255,0.25); border-radius: var(--radius-sm); cursor: pointer; padding: 8px; flex-shrink: 0; }
.hamburger__line { display: block; width: 100%; height: 2px; background: #fff; border-radius: 2px; transition: transform 0.3s, opacity 0.3s; transform-origin: center; }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn { display: inline-flex; align-items: center; gap: var(--space-xs); padding: 0.9rem 2rem; border-radius: var(--radius-lg); font-family: var(--font-sans); font-size: 0.95rem; font-weight: 700; text-decoration: none; cursor: pointer; border: 2px solid transparent; transition: background 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--primary { background: var(--color-accent); color: #1a1030; border-color: var(--color-accent); }
.btn--primary:hover { background: var(--color-accent-hover); }
.btn--outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: #fff; }

.section-header { text-align: center; margin-bottom: var(--space-lg); }
.section-eyebrow { font-size: 0.73rem; font-weight: 700; letter-spacing: 0.12em; color: var(--color-accent); text-transform: uppercase; margin-bottom: var(--space-xs); }
.section-title { font-family: var(--font-serif); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-xs); }
.section-desc { color: var(--color-text-light); font-size: 0.95rem; max-width: 560px; margin-inline: auto; }

.hero { background: var(--color-bg-alt); border-bottom: 1px solid var(--color-border); }
.hero__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; padding-block: var(--space-xl); min-height: 520px; }
.hero__eyebrow { font-size: 0.75rem; letter-spacing: 0.1em; color: var(--color-secondary); font-weight: 700; margin-bottom: var(--space-sm); }
.hero__title { font-family: var(--font-serif); font-size: clamp(2rem, 4.5vw, 2.8rem); font-weight: 700; line-height: 1.4; color: var(--color-primary); margin-bottom: var(--space-md); }
.hero__desc { color: var(--color-text-light); font-size: 1rem; line-height: 1.8; margin-bottom: var(--space-lg); max-width: 480px; }
.hero__actions { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.hero__visual svg { width: 100%; height: auto; }

.courses-section { padding-block: var(--space-xl); }
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.course-card { background: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius-md); border-top: 4px solid var(--color-primary); padding: var(--space-md); transition: transform 0.2s, box-shadow 0.2s; position: relative; }
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.course-card--main { border-top-color: var(--color-accent); border-color: var(--color-accent); border-width: 2px; }
.course-card__badge { position: absolute; top: var(--space-sm); right: var(--space-sm); background: var(--color-accent); color: #1a1030; font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: var(--radius-lg); }
.course-card__header { margin-bottom: var(--space-sm); }
.course-card__icon { font-size: 1.8rem; display: block; margin-bottom: 4px; }
.course-card__title { font-family: var(--font-serif); font-size: 1rem; font-weight: 700; color: var(--color-primary); }
.course-card__desc { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.7; margin-bottom: var(--space-sm); }
.course-card__detail { font-size: 0.8rem; color: var(--color-secondary); font-weight: 700; margin-bottom: 6px; }
.course-card__price { font-size: 1rem; font-weight: 700; color: var(--color-primary); border-top: 1px solid var(--color-border); padding-top: var(--space-xs); }

.features-section { padding-block: var(--space-xl); background: var(--color-bg-dark); color: var(--color-text-on-dark); }
.features-section .section-title { color: #fff; }
.features-section .section-eyebrow { color: var(--color-accent); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.feature-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-top: 3px solid var(--color-accent); border-radius: var(--radius-md); padding: var(--space-lg) var(--space-md); text-align: center; transition: transform 0.2s; }
.feature-card:hover { transform: translateY(-3px); }
.feature-card__icon { font-size: 2.5rem; display: block; margin-bottom: var(--space-sm); }
.feature-card__title { font-size: 0.95rem; font-weight: 700; color: var(--color-accent-light); margin-bottom: var(--space-xs); }
.feature-card__desc { font-size: 0.87rem; color: #9080b8; line-height: 1.7; }

.flow-section { padding-block: var(--space-xl); background: var(--color-bg-alt); }
.flow-section .section-eyebrow { color: var(--color-secondary); }
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); position: relative; }
.flow-steps::before { content: ''; position: absolute; top: 28px; left: 12%; right: 12%; height: 2px; background: linear-gradient(to right, var(--color-accent), var(--color-secondary)); }
.flow-step { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-md); text-align: center; position: relative; z-index: 1; box-shadow: var(--shadow-sm); }
.flow-step__num { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: var(--color-accent); color: #1a1030; font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-sm); }
.flow-step__title { font-size: 0.95rem; font-weight: 700; margin-bottom: var(--space-xs); color: var(--color-primary); }
.flow-step__desc { font-size: 0.83rem; color: var(--color-text-light); line-height: 1.7; }

.access-section { padding-block: var(--space-xl); }
.access-inner { max-width: 720px; margin-inline: auto; }
.hours-table { width: 100%; border-collapse: collapse; margin-bottom: var(--space-sm); font-size: 0.88rem; }
.hours-table th, .hours-table td { padding: 10px 12px; border: 1px solid var(--color-border); text-align: center; }
.hours-table thead th { background: var(--color-primary); color: #fff; font-weight: 700; }
.hours-open { color: #2a7840; font-weight: 700; }
.hours-closed { color: #c0384a; font-weight: 700; }
.hours-time { font-weight: 700; text-align: left; white-space: nowrap; }
.hours-note { font-size: 0.82rem; color: var(--color-text-light); margin-bottom: var(--space-md); }
.info-list { display: grid; gap: var(--space-sm); }
.info-list__item { display: grid; grid-template-columns: 110px 1fr; gap: var(--space-sm); padding: var(--space-sm); border-bottom: 1px solid var(--color-border); }
.info-list__label { font-weight: 700; color: var(--color-primary); font-size: 0.9rem; }
.info-list__value { font-size: 0.9rem; color: var(--color-text); line-height: 1.7; }
.tel-link { color: var(--color-primary); text-decoration: none; font-weight: 700; font-size: 1.05rem; }
.tel-link:hover { text-decoration: underline; }

.site-footer { background: var(--color-bg-dark); color: #7050a0; }
.footer__inner { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-md); padding-block: var(--space-lg); flex-wrap: wrap; }
.footer__logo { font-family: var(--font-serif); font-size: 1rem; color: #fff; font-weight: 700; margin-bottom: 4px; }
.footer__tagline { font-size: 0.8rem; }
.footer__nav-list { list-style: none; display: flex; gap: var(--space-md); flex-wrap: wrap; }
.footer__nav-list a { text-decoration: none; color: #7050a0; font-size: 0.85rem; transition: color 0.2s; }
.footer__nav-list a:hover { color: var(--color-accent); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.07); padding-block: var(--space-sm); text-align: center; }
.footer__copy { font-size: 0.75rem; color: #3a1858; }

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; min-height: auto; }
  .hero__visual { order: -1; max-width: 380px; margin-inline: auto; }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .flow-steps::before { display: none; }
}
@media (max-width: 680px) {
  .hamburger { display: flex; }
  .site-nav { position: fixed; inset: var(--header-height) 0 0 0; background: var(--color-primary); display: none; flex-direction: column; padding: var(--space-lg) var(--space-md); overflow-y: auto; z-index: 99; }
  .site-nav.is-open { display: flex; }
  .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav__link { display: block; padding: var(--space-sm) 0; font-size: 1.1rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .hero__inner { padding-block: var(--space-lg); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .course-grid { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: 1fr; }
  .info-list__item { grid-template-columns: 90px 1fr; }
  .footer__inner { flex-direction: column; }
}