:root {
  --ink: #242826;
  --sub: #6f716d;
  --paper: #fffdf8;
  --white: #ffffff;
  --milk: #f6f1e9;
  --mist: #edf4f0;
  --sand: #d9cdbc;
  --line: #e6ded2;
  --gold: #ad8f59;
  --deep: #223735;
  --warm-gray: #90887d;
  --shadow: 0 30px 90px rgba(58, 48, 38, 0.12);
  --soft-shadow: 0 16px 48px rgba(58, 48, 38, 0.08);
  --display-serif: "A-OTF Ryumin Pro", "A-OTF Ryumin Pr6N", "Ryumin Pro", "Ryumin Pr6N", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --latin-serif: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Hiragino Sans", "Yu Gothic", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--display-serif);
  line-height: 1.85;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(22px, 4vw, 58px);
  background: rgba(26, 43, 41, 0.88);
  border-bottom: 1px solid rgba(173, 143, 89, 0.4);
  backdrop-filter: blur(18px);
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.site-header.is-scrolled {
  background: rgba(26, 43, 41, 0.97);
  border-color: rgba(173, 143, 89, 0.6);
  box-shadow: var(--soft-shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--deep);
  font-family: var(--latin-serif);
  font-size: clamp(18px, 1.5vw, 24px);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1;
  white-space: nowrap;
}

.brand span {
  display: block;
}

.brand-logo {
  display: block;
  height: 58px;
  width: auto;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 100;
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  margin: 6px auto;
  background: #f0ece2;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.1vw, 28px);
  color: rgba(240, 236, 226, 0.85);
  font-family: var(--sans);
  font-size: 12px;
}

.site-nav a {
  position: relative;
  display: grid;
  gap: 3px;
  min-width: max-content;
  padding: 8px 2px 10px;
  text-align: center;
  line-height: 1.25;
  transition: color 0.28s ease, transform 0.28s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width 0.32s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #ffffff;
  transform: translateY(-2px);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  width: 72%;
}

.site-nav span {
  font-family: var(--display-serif);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.28s ease;
}

.site-nav small {
  color: var(--gold);
  font-family: var(--latin-serif);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.04em;
  transition: color 0.28s ease, opacity 0.28s ease;
}

.site-nav a:hover small,
.site-nav a:focus-visible small {
  color: #d8bd8a;
  opacity: 1;
}

.hero {
  position: relative;
  min-height: 94svh;
  display: grid;
  align-items: end;
  padding: 96px clamp(22px, 5vw, 72px) 76px;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-image img {
  object-position: center;
}

.hero-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 253, 248, 0.96) 0%, rgba(255, 253, 248, 0.8) 34%, rgba(255, 253, 248, 0.28) 66%),
    linear-gradient(180deg, rgba(255, 253, 248, 0), rgba(255, 253, 248, 0.58));
}

.hero-copy {
  max-width: 720px;
  margin-top: 36px;
  margin-bottom: clamp(58px, 10vw, 146px);
  margin-right: auto;
  text-align: left;
}

.hero-copy .eyebrow {
  margin-bottom: 20px;
  color: rgba(34, 55, 53, 0.72);
  font-family: "Cormorant Garamond", "Times New Roman", "A-OTF Ryumin Pro", "A-OTF Ryumin Pr6N", serif;
  font-size: clamp(13px, 1.45vw, 20px);
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow,
.section-kicker,
.scroll-cue,
.text-link {
  font-family: var(--sans);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-weight: 500;
  line-height: 1.42;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(42px, 5vw, 78px);
  letter-spacing: 0.02em;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(30px, 3.2vw, 52px);
  letter-spacing: 0.015em;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(21px, 2vw, 30px);
}

p {
  color: var(--sub);
}

.hero-copy p {
  max-width: 600px;
  margin: 0;
  color: #4f5653;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  color: var(--deep);
  font-size: 11px;
}

.section {
  padding: clamp(70px, 9vw, 132px) clamp(22px, 6vw, 92px);
}

.section-kicker {
  max-width: 1160px;
  margin: 0 auto 30px;
  color: var(--deep);
  font-family: "A-OTF Ryumin Pro", "A-OTF Ryumin Pr6N", "Ryumin Pro", "Ryumin Pr6N", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(22px, 2.1vw, 32px);
  line-height: 1.5;
}

.about-grid {
  display: grid;
  max-width: 1160px;
  margin: 0 auto;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  grid-template-rows: auto auto;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.photo-frame {
  margin: 0;
  overflow: hidden;
  background: var(--sand);
  opacity: 0;
  transform: translateY(28px);
  filter: blur(8px);
  transition:
    opacity 1.1s ease,
    transform 1.1s ease,
    filter 1.1s ease;
  will-change: opacity, transform, filter;
}

.photo-frame.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.photo-large {
  height: clamp(360px, 50vw, 660px);
  grid-row: span 2;
}

.photo-small {
  width: min(72%, 340px);
  height: 320px;
  justify-self: end;
}

.about-copy {
  max-width: 520px;
  padding-top: 26px;
}

.about-copy .eyebrow {
  margin-bottom: 22px;
  font-size: 13px;
}

.about-copy h2 {
  max-width: 460px;
  font-size: clamp(26px, 2.35vw, 38px);
  line-height: 1.55;
}

.section-title-row {
  max-width: 1120px;
  margin: 0 auto clamp(44px, 8vw, 96px);
}

.safety {
  background: var(--white);
}

.assurance-grid {
  display: grid;
  max-width: 1120px;
  margin: 0 auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.assurance-grid article {
  display: grid;
  grid-template-rows: 250px auto auto auto;
  padding-bottom: 34px;
  background: var(--paper);
}

.assurance-grid .photo-frame {
  height: 250px;
  margin-bottom: 34px;
}

.assurance-grid .feature-number,
.assurance-grid h3,
.assurance-grid p {
  margin-left: 30px;
  margin-right: 30px;
}

.assurance-grid p {
  margin-bottom: 0;
  font-size: 14px;
}

.feature-row {
  display: grid;
  max-width: 1120px;
  margin: 0 auto clamp(70px, 10vw, 138px);
  grid-template-columns: minmax(0, 0.92fr) minmax(300px, 0.72fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: center;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row.reverse {
  grid-template-columns: minmax(300px, 0.72fr) minmax(0, 0.92fr);
}

.feature-row.reverse .photo-frame {
  order: 2;
}

.feature-row .photo-frame {
  height: clamp(300px, 42vw, 540px);
}

.feature-copy {
  max-width: 520px;
}

.feature-number {
  display: block;
  margin-bottom: 26px;
  color: var(--gold);
  font-family: var(--latin-serif);
  font-size: clamp(34px, 4.8vw, 72px);
  font-weight: 300;
  line-height: 1;
  font-variant-numeric: lining-nums;
  letter-spacing: 0.04em;
  opacity: 0.82;
}

.flow {
  background: var(--milk);
  padding-top: clamp(70px, 9vw, 118px);
  padding-bottom: clamp(70px, 9vw, 118px);
}

.flow-list {
  display: grid;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  background: var(--line);
  box-shadow: var(--shadow);
}

.flow-list li {
  min-height: 290px;
  padding: 34px 26px;
  background: var(--paper);
}

.flow-list span {
  display: block;
  margin-bottom: 38px;
  color: var(--gold);
  font-size: 13px;
}

.flow-list h3 {
  font-size: 20px;
}

.flow-list p {
  font-size: 14px;
}

.audience {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.audience-panel {
  position: relative;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(34px, 6vw, 76px);
  overflow: hidden;
  color: var(--white);
}

.audience-panel::before,
.audience-panel::after {
  content: "";
  position: absolute;
  inset: 0;
}

.audience-panel::before {
  z-index: -2;
  background-image: url("assets/audience-gentlemen-executive.jpg");
  background-size: cover;
  background-position: center 32%;
  transition: transform 0.6s ease;
}

.audience-panel.ladies::before {
  background-image: url("assets/audience-ladies-consultation.jpg");
  background-position: 68% center;
}

.audience-panel::after {
  z-index: -1;
  background: linear-gradient(180deg, rgba(33, 42, 40, 0.1), rgba(33, 42, 40, 0.68));
}

.audience-panel:hover::before {
  transform: scale(1.03);
}

.audience-panel h2,
.audience-panel p,
.audience-panel .eyebrow {
  color: var(--white);
}

.audience-panel p {
  max-width: 420px;
}

.text-link {
  margin-top: 22px;
  font-size: 13px;
}

.membership {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(320px, 0.76fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: center;
  background: var(--paper);
}

.photo-band {
  height: clamp(360px, 50vw, 640px);
  margin: 0;
}

.membership-copy {
  max-width: 540px;
}

.relaxation {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
  color: var(--white);
  background: var(--deep);
}

.relaxation h2,
.relaxation p,
.relaxation .eyebrow {
  color: var(--white);
}

.relaxation p {
  max-width: 680px;
  opacity: 0.78;
}

.mini-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 30px 0 0;
  padding: 0;
  color: rgba(255, 255, 255, 0.92);
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 13px;
  list-style: none;
}

.mini-list li strong {
  display: block;
  margin-bottom: 6px;
  color: var(--gold);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.mini-list li {
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(173, 143, 89, 0.35);
  border-radius: 10px;
  line-height: 1.8;
}

.operation {
  background: var(--paper);
}

.operation-list {
  display: grid;
  max-width: 1120px;
  margin: 0 auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.operation-list div {
  min-height: 160px;
  padding: 28px 24px;
  background: var(--white);
}

.operation-list dt {
  margin-bottom: 18px;
  color: var(--gold);
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.operation-list dd {
  margin: 0;
  color: var(--sub);
  font-size: 14px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--sans);
  font-size: 13px;
}

.button.light {
  color: var(--white);
}

.button.dark {
  color: var(--white);
  background: var(--deep);
}

.contact-form .button.dark {
  width: 100%;
}

.button.outline {
  color: var(--deep);
  background: transparent;
}

.button.glass {
  color: var(--deep);
  background: rgba(255, 255, 255, 0.48);
  backdrop-filter: blur(12px);
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.detail-hero {
  position: relative;
  min-height: 78svh;
  display: grid;
  align-items: end;
  padding: 150px clamp(22px, 6vw, 92px) clamp(70px, 10vw, 130px);
  overflow: hidden;
  color: var(--white);
}

.detail-hero::before,
.detail-hero::after {
  content: "";
  position: absolute;
  inset: 0;
}

.detail-hero::before {
  z-index: -2;
  background-image: url("assets/detail-hero-gentleman-v2.jpg");
  background-size: cover;
  background-position: center 18%;
}

.detail-hero-lady::before {
  background-image: url("assets/detail-hero-lady-v2.jpg");
  background-position: 68% 18%;
}

.detail-hero::after {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(25, 35, 33, 0.72), rgba(25, 35, 33, 0.32) 58%, rgba(25, 35, 33, 0.12)),
    linear-gradient(180deg, rgba(25, 35, 33, 0.08), rgba(25, 35, 33, 0.64));
}

.detail-hero > div {
  max-width: 760px;
}

.detail-hero h1,
.detail-hero p,
.detail-hero .eyebrow {
  color: var(--white);
}

.detail-hero h1 {
  font-size: clamp(44px, 5.8vw, 86px);
}

.detail-hero p {
  max-width: 620px;
  opacity: 0.86;
}

.detail-section {
  background: var(--paper);
}

.detail-section.soft-bg {
  background: var(--milk);
}

.detail-lead {
  max-width: 980px;
  margin: 0 auto clamp(34px, 6vw, 72px);
}

.detail-lead p {
  max-width: 760px;
}

.info-grid {
  display: grid;
  max-width: 1120px;
  margin: 0 auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.class-summary {
  display: grid;
  max-width: 1120px;
  margin: 0 auto 30px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.class-summary article {
  min-height: 260px;
  padding: 34px 28px;
  background: var(--white);
}

.class-summary span {
  display: block;
  margin-bottom: 18px;
  color: var(--deep);
  font-family: var(--latin-serif);
  font-size: clamp(25px, 2.5vw, 42px);
  line-height: 1;
}

.class-summary strong {
  display: block;
  margin-bottom: 20px;
  color: var(--gold);
  font-size: clamp(24px, 2.3vw, 34px);
  font-weight: 500;
}

.class-summary p {
  margin-bottom: 0;
  font-size: 13px;
}

.timeline-list {
  position: relative;
  display: grid;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  background: var(--line);
  box-shadow: var(--shadow);
}

.timeline-list li {
  min-height: 300px;
  padding: 34px 28px;
  background: var(--white);
}

.timeline-list span {
  display: block;
  margin-bottom: 34px;
  color: var(--gold);
  font-family: var(--latin-serif);
  font-size: clamp(34px, 3.7vw, 62px);
  line-height: 1;
}

.timeline-list h3 {
  font-size: 22px;
}

.timeline-list p {
  margin-bottom: 0;
  font-size: 14px;
}

.info-grid.wide {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.info-grid article {
  min-height: 260px;
  padding: 34px 28px;
  background: var(--white);
}

.info-grid span,
.price-cards span {
  display: block;
  margin-bottom: 32px;
  color: var(--gold);
  font-family: var(--latin-serif);
  font-size: clamp(30px, 3.2vw, 54px);
  line-height: 1;
}

.info-grid h3,
.price-cards h3 {
  font-size: 22px;
}

.info-grid p,
.price-cards p {
  font-size: 14px;
}

.table-wrap {
  max-width: 1120px;
  margin: 0 auto;
  overflow-x: auto;
  background: var(--white);
  box-shadow: var(--shadow);
}

.detail-faq {
  background: var(--white);
  padding: 0 clamp(22px, 4vw, 42px);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 14px;
}

th,
td {
  padding: 22px 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

thead th {
  color: var(--deep);
  background: #f4efe6;
  font-weight: 600;
}

tbody th {
  color: var(--deep);
  font-family: var(--display-serif);
  font-size: 18px;
  font-weight: 500;
}

.table-note {
  max-width: 1120px;
  margin: 24px auto 0;
  font-size: 13px;
}

.price-cards {
  display: grid;
  max-width: 1120px;
  margin: 0 auto;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.price-cards.three-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.price-cards article {
  min-height: 320px;
  padding: 34px 26px;
  background: var(--white);
}

.price-cards strong {
  display: block;
  margin: 26px 0 8px;
  color: var(--deep);
  font-size: 24px;
  font-weight: 500;
}

.price-cards small {
  display: block;
  color: var(--warm-gray);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.7;
}

.condition-list {
  display: grid;
  max-width: 980px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.condition-list li {
  position: relative;
  padding: 24px 0 24px 36px;
  border-bottom: 1px solid var(--line);
  color: var(--sub);
}

.condition-list li:nth-child(n + 2):nth-child(-n + 5) {
  color: #7f7468;
}

.condition-list li::before {
  content: "";
  position: absolute;
  top: 38px;
  left: 0;
  width: 14px;
  height: 1px;
  background: var(--gold);
}

.detail-cta {
  color: var(--white);
  background: var(--deep);
}

.detail-cta h2,
.detail-cta p,
.detail-cta .eyebrow {
  max-width: 780px;
  color: var(--white);
}

.faq-list {
  max-width: 1120px;
  margin: 0 auto;
}

details {
  border-top: 1px solid var(--line);
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  padding: 28px 0;
  font-size: 18px;
}

details p {
  max-width: 760px;
  margin-bottom: 30px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 0.74fr);
  gap: clamp(34px, 7vw, 98px);
  background: var(--mist);
}

.contact-copy {
  max-width: 560px;
}

.contact-meta {
  display: grid;
  gap: 6px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(173, 143, 89, 0.3);
}

.contact-meta p {
  margin: 0;
  font-size: 14px;
}

.contact-form {
  display: grid;
  gap: 20px;
  padding: clamp(28px, 4vw, 46px);
  background: var(--white);
  box-shadow: var(--shadow);
  font-family: var(--sans);
}

.form-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 6px;
}

.form-heading h3 {
  margin-bottom: 0;
  font-size: 22px;
}

.form-heading p:last-child {
  margin-bottom: 0;
  font-size: 13px;
}

label {
  display: grid;
  gap: 8px;
  color: #4f5653;
  font-size: 13px;
}

label span {
  margin-left: 6px;
  color: var(--gold);
  font-size: 11px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #d8d0c5;
  border-radius: 2px;
  min-height: 48px;
  padding: 14px 15px;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

textarea {
  resize: vertical;
}

button {
  cursor: pointer;
}

.site-footer {
  display: grid;
  gap: 8px;
  padding: 42px clamp(22px, 6vw, 92px);
  color: rgba(255, 255, 255, 0.72);
  background: var(--deep);
  border-top: 1px solid rgba(173, 143, 89, 0.55);
  font-family: var(--sans);
  font-size: 12px;
}

.footer-logo {
  display: block;
  width: min(300px, 72vw);
  height: auto;
  margin-bottom: 14px;
  object-fit: contain;
  mix-blend-mode: screen; /* ロゴの黒背景をフッター色に溶かす */
}

.site-footer p {
  margin: 0;
}

.site-footer p:first-child {
  color: var(--white);
  font-family: var(--display-serif);
  font-size: 20px;
}

@media (max-width: 980px) {
  .site-header {
    position: fixed;
    background: rgba(26, 43, 41, 0.95);
    /* backdrop-filterは子要素のposition:fixedの基準をヘッダーに変えてしまい、
       全画面メニューがヘッダー内に閉じ込められて崩れるためモバイルでは無効化 */
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: grid;
    place-content: center;
    align-content: center;
    gap: 8px;
    padding: 96px 24px 40px;
    overflow-y: auto;
    background: rgba(22, 36, 34, 0.98);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .site-nav a {
    padding: 14px 8px;
    text-align: center;
  }

  .site-nav span {
    font-size: 19px;
  }

  .site-nav small {
    font-size: 12px;
  }

  .mini-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 760px;
  }

  .hero-image img {
    object-position: 70% center;
  }

  .hero-image::after {
    background:
      linear-gradient(180deg, rgba(255, 253, 248, 0.2), rgba(255, 253, 248, 0.82)),
      linear-gradient(90deg, rgba(255, 253, 248, 0.7), rgba(255, 253, 248, 0.16));
  }

  .about-grid,
  .feature-row,
  .feature-row.reverse,
  .membership,
  .contact {
    grid-template-columns: 1fr;
  }

  .feature-row.reverse .photo-frame {
    order: 0;
  }

  .photo-large,
  .photo-small,
  .feature-row .photo-frame,
  .photo-band {
    height: 420px;
  }

  .photo-small {
    width: 78%;
    justify-self: start;
  }

  .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .assurance-grid {
    grid-template-columns: 1fr;
  }

  .assurance-grid article {
    grid-template-rows: 360px auto auto auto;
  }

  .assurance-grid .photo-frame {
    height: 360px;
  }

  .audience {
    grid-template-columns: 1fr;
  }

  .relaxation {
    display: grid;
  }

  .info-grid,
  .info-grid.wide,
  .price-cards,
  .price-cards.three-cards,
  .class-summary,
  .timeline-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-hero::before {
    background-position: 60% 12%;
  }

  .detail-hero-lady::before {
    background-position: 68% 12%;
  }
}

@media (max-width: 640px) {
  body {
    line-height: 1.78;
  }

  .section {
    padding: 76px 22px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 29px;
  }

  .hero {
    min-height: 700px;
    padding-top: 88px;
  }

  .hero-image img {
    object-position: 82% center;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-copy .eyebrow {
    font-size: 12px;
    letter-spacing: 0.1em;
  }

  .photo-large,
  .photo-small,
  .feature-row .photo-frame,
  .photo-band {
    height: 320px;
  }

  .assurance-grid article {
    grid-template-rows: 260px auto auto auto;
  }

  .assurance-grid .photo-frame {
    height: 260px;
  }

  .photo-small {
    width: 100%;
  }

  .flow-list {
    grid-template-columns: 1fr;
  }

  .flow-list li {
    min-height: auto;
  }

  .audience-panel {
    min-height: 420px;
  }

  .button {
    width: 100%;
  }

  .hero-actions {
    width: 100%;
  }

  .inline-actions,
  .info-grid,
  .info-grid.wide,
  .price-cards,
  .price-cards.three-cards,
  .class-summary,
  .timeline-list,
  .operation-list {
    grid-template-columns: 1fr;
  }

  .inline-actions {
    display: grid;
  }

  .detail-hero {
    min-height: 700px;
    padding-top: 110px;
  }

  .detail-hero::before {
    background-position: 63% 10%;
  }

  .detail-hero-lady::before {
    background-position: 70% 10%;
  }
}


/* ---- トレーニングサロンページ ---- */
.price-table {
  width: 100%;
  max-width: 860px;
  margin: 32px auto 0;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 14px;
}

.price-table th,
.price-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.price-table th {
  width: 42%;
  color: var(--deep);
  font-family: var(--display-serif);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.price-table td {
  color: var(--sub);
}

.trainer-note {
  max-width: 720px;
  margin: 26px auto 0;
  padding: 22px 26px;
  background: var(--milk);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--sub);
  font-size: 14px;
  text-align: center;
}

.crosslink {
  display: block;
  max-width: 860px;
  margin: 0 auto;
  padding: 34px 30px;
  background: var(--deep);
  border: 1px solid rgba(173, 143, 89, 0.5);
  border-radius: 14px;
  color: var(--white);
  text-align: center;
}

.crosslink .eyebrow { color: var(--gold); }
.crosslink h2 { color: var(--white); margin: 6px 0 8px; }
.crosslink p { color: rgba(255, 255, 255, 0.78); margin: 0; font-size: 14px; }