/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

:root {
  --primary: #1B2A41;
  --primary-deep: #0F1A2A;
  --bg-beige: #E8D9B5;
  --silver: #C9CCD3;
  --text: #3D2817;
  --text-light: #6B5B47;
  --white: #FFFFFF;
  --serif: "Noto Serif JP", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Yu Gothic", sans-serif;
}

body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.8;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

/* ========== Layout ========== */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 720px; }

section { padding: 100px 0; }

.section-title {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 500;
  color: var(--primary);
  text-align: center;
  margin: 0 0 56px;
  letter-spacing: 0.05em;
}
.section-title--dark { color: var(--bg-beige); }

/* ========== Button ========== */
.btn {
  display: inline-block;
  background: var(--bg-beige);
  color: var(--primary);
  font-weight: 500;
  font-size: 16px;
  padding: 16px 40px;
  border-radius: 4px;
  letter-spacing: 0.1em;
  transition: background 0.2s ease, transform 0.2s ease;
}
.btn:hover { background: var(--white); transform: translateY(-2px); }
.btn--large { padding: 20px 56px; font-size: 17px; }

/* ========== Section 1: FV ========== */
.fv {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1B2A41 0%, #2C3E50 100%);
  padding: 100px 24px;
  overflow: hidden;
}
.fv__overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(27,42,65,0.4) 0%, rgba(15,26,42,0.8) 100%);
}
.fv__inner { position: relative; text-align: center; max-width: 720px; }
.fv__title {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 500;
  color: var(--white);
  line-height: 1.6;
  letter-spacing: 0.05em;
  margin: 0 0 24px;
}
.fv__sub {
  font-size: 18px;
  color: var(--bg-beige);
  margin: 0 0 48px;
  letter-spacing: 0.05em;
}
.fv__note {
  font-size: 12px;
  color: var(--silver);
  margin: 16px 0 0;
  letter-spacing: 0.05em;
}

/* ========== Section 2: Intro ========== */
.intro {
  background: var(--primary);
  padding: 120px 0;
}
.intro__title {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 500;
  color: var(--bg-beige);
  text-align: center;
  margin: 0 0 48px;
  line-height: 1.8;
  letter-spacing: 0.05em;
}
.intro__body {
  font-size: 16px;
  color: var(--silver);
  line-height: 2.2;
  text-align: center;
  margin: 0 0 32px;
}

/* ========== Section 3: Benefits ========== */
.benefits { background: var(--bg-beige); }
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--white);
  padding: 40px 28px;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  text-align: center;
}
.card__icon {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 20px;
  line-height: 1;
}
.card__title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--primary);
  margin: 0 0 16px;
}
.card__body {
  font-size: 14px;
  color: var(--text);
  line-height: 1.9;
  margin: 0;
}

/* ========== Section 4: Menu ========== */
.menu { background: var(--white); }
.menu__list { list-style: none; padding: 0; margin: 0; }
.menu__item {
  padding: 24px 0;
  border-bottom: 1px solid var(--bg-beige);
}
.menu__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}
.menu__name {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--primary);
}
.menu__price {
  font-size: 16px;
  color: var(--text);
  letter-spacing: 0.05em;
}
.menu__desc {
  font-size: 13px;
  color: var(--text-light);
  margin: 6px 0 0;
}
.menu__note {
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
  margin: 40px 0 0;
}

/* ========== Section 5: Gallery ========== */
.gallery { background: var(--primary); }
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.gallery__item { margin: 0; }
.gallery__img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #2C3E50, #1B2A41);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--silver);
  font-size: 14px;
  letter-spacing: 0.1em;
}
.gallery__img::before {
  content: "[ " attr(data-label) " ]";
}
.gallery__item figcaption {
  font-size: 13px;
  color: var(--silver);
  margin-top: 12px;
  line-height: 1.8;
}

/* ========== Section 6: Optin ========== */
.optin {
  background: var(--primary);
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.optin::before {
  content: "☾";
  position: absolute;
  top: 40px; right: 60px;
  font-size: 120px;
  color: var(--bg-beige);
  opacity: 0.1;
  pointer-events: none;
}
.optin__eyebrow {
  font-size: 14px;
  color: var(--silver);
  letter-spacing: 0.2em;
  margin: 0 0 24px;
}
.optin__headline {
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 500;
  color: var(--bg-beige);
  line-height: 1.6;
  margin: 0 0 24px;
  letter-spacing: 0.05em;
}
.optin__sub {
  font-size: 14px;
  color: var(--silver);
  line-height: 1.9;
  margin: 0 0 40px;
}
.optin__note {
  font-size: 12px;
  color: var(--silver);
  margin: 20px 0 0;
}

/* ========== Section 7: FAQ ========== */
.faq { background: var(--white); }
.faq__item {
  border-bottom: 1px solid var(--bg-beige);
  padding: 20px 0;
}
.faq__item summary {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 32px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+";
  position: absolute;
  right: 0; top: 0;
  font-size: 24px;
  color: var(--text-light);
  transition: transform 0.2s ease;
}
.faq__item[open] summary::after { content: "−"; }
.faq__item p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.9;
  margin: 12px 0 0;
}

/* ========== Section 8: Info ========== */
.info { background: var(--bg-beige); }
.info__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.info__list {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px 24px;
  margin: 0;
  font-size: 14px;
}
.info__list dt {
  color: var(--text-light);
  font-weight: 500;
}
.info__list dd {
  margin: 0;
  color: var(--primary);
}
.info__map {
  width: 100%;
  height: 360px;
  background: var(--white);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 13px;
}
.info__map::before { content: "[ " attr(data-label) " ]"; }

/* ========== Section 9: Final CTA ========== */
.finalcta {
  background: var(--primary);
  padding: 140px 0;
  text-align: center;
}
.finalcta__title {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 500;
  color: var(--bg-beige);
  margin: 0 0 32px;
  letter-spacing: 0.05em;
}
.finalcta__body {
  font-size: 15px;
  color: var(--silver);
  line-height: 2.0;
  margin: 0 0 48px;
}
.finalcta__qr {
  width: 200px;
  height: 200px;
  margin: 48px auto 12px;
  background: var(--white);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 14px;
}
.finalcta__qr::before { content: "[ " attr(data-label) " ]"; }
.finalcta__qrnote {
  font-size: 12px;
  color: var(--silver);
  margin: 0;
}

/* ========== Footer ========== */
.footer {
  background: var(--primary-deep);
  padding: 32px 24px;
  text-align: center;
}
.footer p {
  font-size: 12px;
  color: var(--text-light);
  margin: 0;
  letter-spacing: 0.05em;
}

/* ========== Responsive ========== */
@media (max-width: 900px) {
  section { padding: 72px 0; }
  .benefits__grid { grid-template-columns: 1fr; gap: 16px; }
  .info__grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .fv { min-height: 80vh; padding: 80px 20px; }
  .fv__title { font-size: 32px; }
  .fv__sub { font-size: 15px; margin-bottom: 36px; }
  .intro { padding: 80px 0; }
  .intro__title { font-size: 22px; }
  .intro__body { font-size: 15px; text-align: left; }
  .section-title { font-size: 24px; margin-bottom: 40px; }
  .gallery__grid { grid-template-columns: 1fr; }
  .optin { padding: 80px 0; }
  .optin__headline { font-size: 26px; }
  .optin::before { font-size: 80px; top: 20px; right: 20px; }
  .finalcta { padding: 96px 0; }
  .finalcta__title { font-size: 26px; }
  .btn { padding: 14px 32px; font-size: 15px; }
  .btn--large { padding: 18px 44px; }
  .menu__row { flex-wrap: wrap; }
  .info__list { grid-template-columns: 80px 1fr; font-size: 13px; }
}