:root {
  --color-primary: #10203a;
  --color-primary-dark: #0d1b30;
  --color-accent: #c9a227;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f1e6;
  --color-text: #333333;
  --font-heading: 'Shippori Mincho', serif;
  --font-body: 'Noto Sans JP', sans-serif;
  --container-width: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--color-text); background: var(--color-bg); line-height: 1.8; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--color-primary-dark); border-bottom: 1px solid rgba(201, 162, 39, 0.18); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.site-header__logo { font-family: var(--font-heading); font-size: 15px; letter-spacing: 0.04em; color: #f2ecdd; }
.site-header__toggle { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; background: none; border: none; cursor: pointer; }
.site-header__toggle span { display: block; height: 2px; background: #f2ecdd; }
.site-header__nav { position: fixed; inset: 64px 0 0 0; background: var(--color-primary-dark); transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease; overflow-y: auto; }
.site-header__nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.site-header__nav-list { display: flex; flex-direction: column; padding: 8px 20px; }
.site-header__nav-list a { display: block; padding: 16px 0; font-size: 15px; color: #dfe3ea; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.site-header__cta { display: block; margin: 24px 20px; padding: 14px 24px; text-align: center; border-radius: 999px; background: var(--color-accent); color: var(--color-primary); font-weight: 700; font-size: 14px; }

@media (min-width: 768px) {
  .site-header__toggle { display: none; }
  .site-header__nav { position: static; inset: auto; transform: none; opacity: 1; pointer-events: auto; background: none; overflow: visible; display: flex; align-items: center; gap: 32px; }
  .site-header__nav-list { flex-direction: row; gap: 32px; padding: 0; }
  .site-header__nav-list a { padding: 0; font-size: 14px; color: #b9c2d4; border-bottom: none; }
  .site-header__cta { margin: 0; padding: 10px 24px; font-size: 14px; }
}

/* Hero */
.hero { position: relative; background: var(--color-primary-dark); overflow: hidden; padding: 64px 0 56px; }
.hero__inner { position: relative; max-width: 640px; }
.hero__eyebrow { font-size: 11px; letter-spacing: 0.18em; color: var(--color-accent); margin-bottom: 16px; }
.hero__title { font-family: var(--font-heading); font-weight: 600; font-size: 34px; line-height: 1.5; color: #f5f1e6; margin-bottom: 20px; }
.hero__lead { font-size: 15px; line-height: 2; color: #aab4c8; margin-bottom: 28px; }
.hero__cta { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; background: var(--color-accent); color: var(--color-primary); font-weight: 700; font-size: 14px; border-radius: 2px; }
.hero__decoration { position: absolute; right: -80px; top: 0; bottom: 0; width: 420px; opacity: 0.3; display: none; }

@media (min-width: 768px) {
  .hero { padding: 120px 0 96px; }
  .hero__title { font-size: 48px; }
  .hero__decoration { display: block; }
}
@media (min-width: 1200px) {
  .hero__title { font-size: 56px; }
}

/* About */
.about { padding: 56px 0; }
.about__eyebrow { font-size: 12px; letter-spacing: 0.12em; color: #8a7a3f; margin-bottom: 8px; }
.about__title { font-family: var(--font-heading); font-size: 22px; color: var(--color-primary); margin-bottom: 24px; line-height: 1.6; }
.about__body p { margin-bottom: 16px; color: #4a4a44; font-size: 14.5px; line-height: 1.9; }
@media (min-width: 768px) {
  .about { padding: 88px 0; }
  .about__title { font-size: 28px; max-width: 640px; }
  .about__body { max-width: 720px; }
}

/* Activities */
.activities { background: var(--color-bg-alt); padding: 56px 0; }
.activities__eyebrow { font-size: 12px; letter-spacing: 0.12em; color: #8a7a3f; margin-bottom: 8px; }
.activities__title { font-family: var(--font-heading); font-size: 22px; color: var(--color-primary); margin-bottom: 32px; }
.activities__list { display: grid; grid-template-columns: 1fr; gap: 32px; }
.activities__icon { color: var(--color-primary); margin-bottom: 4px; }
.activities__item-title { font-size: 15px; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; }
.activities__item-text { font-size: 13.5px; line-height: 1.8; color: #5b5a4f; }
@media (min-width: 768px) {
  .activities { padding: 88px 0; }
  .activities__list { grid-template-columns: repeat(2, 1fr); gap: 40px; }
}
@media (min-width: 1200px) {
  .activities__list { grid-template-columns: repeat(3, 1fr); }
}

/* Membership */
.membership { padding: 56px 0; }
.membership__eyebrow { font-size: 12px; letter-spacing: 0.12em; color: #8a7a3f; margin-bottom: 8px; }
.membership__title { font-family: var(--font-heading); font-size: 22px; color: var(--color-primary); margin-bottom: 32px; }
.membership__cards { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 24px; }
.membership__card { border: 1px solid rgba(16, 32, 48, 0.15); border-radius: 2px; padding: 28px; background: #fff; }
.membership__card--corporate { background: var(--color-primary); border-color: var(--color-primary); }
.membership__card-label { font-size: 11px; letter-spacing: 0.1em; color: #8a7a3f; margin-bottom: 8px; }
.membership__card--corporate .membership__card-label { color: var(--color-accent); }
.membership__card-name { font-size: 17px; font-weight: 700; color: var(--color-primary); margin-bottom: 14px; }
.membership__card--corporate .membership__card-name { color: #f5f1e6; }
.membership__price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 4px; }
.membership__price-num { font-family: var(--font-heading); font-size: 28px; color: var(--color-primary); }
.membership__card--corporate .membership__price-num { color: #f5f1e6; }
.membership__price-unit { font-size: 13px; color: #5b5a4f; }
.membership__card--corporate .membership__price-unit { color: #aab4c8; }
.membership__price-note { font-size: 11.5px; color: #8a8272; margin-bottom: 20px; }
.membership__card--corporate .membership__price-note { color: #8892a4; }
.membership__benefits li { font-size: 13px; line-height: 1.9; color: #3a3830; }
.membership__card--corporate .membership__benefits li { color: #dfe3ea; }
.membership__note { font-size: 12px; color: #7a7263; line-height: 1.9; }
@media (min-width: 768px) {
  .membership { padding: 88px 0; }
  .membership__cards { grid-template-columns: 1fr 1fr; gap: 28px; }
}

/* Steps */
.steps { background: var(--color-primary-dark); padding: 56px 0; }
.steps__title { font-family: var(--font-heading); font-size: 22px; color: #f5f1e6; margin-bottom: 32px; text-align: center; }
.steps__list { display: flex; flex-direction: column; gap: 24px; }
.steps__item { display: flex; align-items: flex-start; gap: 16px; }
.steps__index { flex: none; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--color-accent); color: var(--color-accent); display: flex; align-items: center; justify-content: center; font-size: 13px; }
.steps__label { font-size: 14px; color: #f2ecdd; line-height: 1.7; padding-top: 6px; }
@media (min-width: 768px) {
  .steps { padding: 88px 0; }
  .steps__list { flex-direction: row; justify-content: space-between; }
  .steps__item { flex-direction: column; align-items: center; text-align: center; max-width: 160px; gap: 12px; }
  .steps__label { padding-top: 0; }
}

/* FAQ */
.faq { padding: 56px 0; }
.faq__title { font-family: var(--font-heading); font-size: 22px; color: var(--color-primary); margin-bottom: 24px; }
.faq__item { border-bottom: 1px solid rgba(16, 32, 48, 0.12); }
.faq__item summary { padding: 18px 0; font-size: 14.5px; font-weight: 700; color: var(--color-primary); cursor: pointer; display: flex; gap: 10px; list-style: none; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::before { content: "Q"; color: var(--color-accent); font-family: var(--font-heading); }
.faq__answer { padding: 0 0 18px 24px; font-size: 13.5px; color: #4a4a44; line-height: 1.9; }
@media (min-width: 768px) {
  .faq { padding: 88px 0; max-width: 760px; margin: 0 auto; }
}

/* CTA banner */
.cta-banner { background: var(--color-accent); padding: 56px 0; text-align: center; }
.cta-banner__title { font-family: var(--font-heading); font-size: 24px; color: var(--color-primary); margin-bottom: 12px; }
.cta-banner__text { font-size: 14px; color: #4a3f14; margin-bottom: 24px; }
.cta-banner__actions { display: inline-flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.cta-banner__button { display: inline-flex; padding: 14px 32px; background: var(--color-primary); color: #f5f1e6; font-weight: 700; font-size: 14px; border-radius: 2px; }
.cta-banner__button--secondary { background: transparent; border: 1px solid var(--color-primary); color: var(--color-primary); }
@media (min-width: 768px) {
  .cta-banner { padding: 88px 0; }
  .cta-banner__title { font-size: 30px; }
}

/* Footer */
.site-footer { background: var(--color-primary-dark); color: #b9c2d4; padding: 48px 0 24px; font-size: 13px; }
.site-footer__brand-name { color: #f2ecdd; font-family: var(--font-heading); font-size: 15px; margin-bottom: 8px; }
.site-footer__address { line-height: 1.8; }
.site-footer__grid { display: flex; flex-direction: column; gap: 32px; margin: 32px 0; }
.site-footer__nav-title { color: #f2ecdd; font-size: 12px; letter-spacing: 0.08em; margin-bottom: 12px; }
.site-footer__nav-list li { margin-bottom: 8px; }
.site-footer__copyright { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 20px; font-size: 11.5px; color: #7c869a; }
@media (min-width: 768px) {
  .site-footer__grid { flex-direction: row; justify-content: space-between; }
}

/* Page header (sub pages: terms / privacy / apply / contact) */
.page-header { background: var(--color-bg-alt); padding: 40px 0; }
.page-header__title { font-family: var(--font-heading); font-size: 24px; color: var(--color-primary); }
@media (min-width: 768px) { .page-header { padding: 64px 0; } .page-header__title { font-size: 30px; } }

/* Legal document body (terms / privacy) */
.legal { padding: 48px 0 80px; max-width: 760px; margin: 0 auto; }
.legal h2 { font-family: var(--font-heading); font-size: 17px; color: var(--color-primary); margin: 32px 0 12px; }
.legal h2:first-child { margin-top: 0; }
.legal p { font-size: 14px; line-height: 1.9; color: #4a4a44; margin-bottom: 10px; }
.legal__meta { font-size: 12.5px; color: #8a8272; margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(16, 32, 48, 0.12); }

/* Form */
.form-section { padding: 48px 0 80px; max-width: 640px; margin: 0 auto; }
.form-group { margin-bottom: 28px; }
.form-group__label { display: block; font-size: 14px; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.form-group__required { color: var(--color-accent); font-size: 11px; font-weight: 700; margin-left: 6px; }
.form-group__optional { color: #9a9a9a; font-size: 11px; font-weight: 400; margin-left: 6px; }
.form-group__hint { font-size: 12px; color: #7a7a74; margin-top: 6px; line-height: 1.7; }
.form-control { width: 100%; padding: 12px 14px; font-family: var(--font-body); font-size: 14px; color: var(--color-text); border: 1px solid rgba(16, 32, 48, 0.25); border-radius: 2px; background: #fff; }
.form-control:focus { outline: 2px solid var(--color-accent); outline-offset: 1px; }
textarea.form-control { min-height: 120px; resize: vertical; }
.form-radio-group { display: flex; flex-direction: column; gap: 10px; }
.form-radio-group--row { flex-direction: row; flex-wrap: wrap; gap: 20px; }
.form-radio { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.form-radio input { width: 16px; height: 16px; accent-color: var(--color-accent); }
.form-checkbox { display: flex; align-items: flex-start; gap: 10px; font-size: 13.5px; line-height: 1.8; }
.form-checkbox input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--color-accent); flex: none; }
.form-quantity { display: flex; align-items: center; gap: 12px; }
.form-quantity .form-control { width: 100px; flex: none; }
.form-quantity__unit { font-size: 13px; color: #5b5a4f; }
.form-summary { background: var(--color-bg-alt); border-radius: 2px; padding: 20px 24px; margin-bottom: 28px; }
.form-summary__row { display: flex; justify-content: space-between; font-size: 13.5px; color: #4a4a44; padding: 4px 0; }
.form-summary__row--total { font-weight: 700; color: var(--color-primary); font-size: 15px; border-top: 1px solid rgba(16, 32, 48, 0.15); margin-top: 8px; padding-top: 12px; }
.form-submit { width: 100%; padding: 16px; background: var(--color-primary); color: #f5f1e6; font-weight: 700; font-size: 15px; border: none; border-radius: 2px; cursor: pointer; }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.form-note { font-size: 12px; color: #7a7a74; line-height: 1.8; margin-bottom: 24px; }
.form-message { display: none; padding: 16px 20px; border-radius: 2px; font-size: 13.5px; margin-bottom: 24px; }
.form-message--success { display: block; background: #eef6ec; color: #2f6b3a; }
.form-message--error { display: block; background: #fbebea; color: #a53c34; }