:root {
  --ink: #1c1814;
  --ink-muted: #4a423a;
  --paper: #f7f3eb;
  --paper-deep: #ece4d6;
  --accent: #6b2f1e;
  --line: rgba(28, 24, 20, 0.12);
  --max: 1080px;
  --font-sans: "Noto Sans JP", system-ui, sans-serif;
  --font-min: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.85;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

body.nav-drawer-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  color: var(--accent);
}

a:hover {
  color: #4a2215;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: #fff;
  outline: 2px solid var(--accent);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 243, 235, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header.menu-open {
  z-index: 100;
}

.site-nav-backdrop {
  display: none;
}

.nav-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
  cursor: pointer;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

.nav-menu-toggle:hover {
  border-color: rgba(107, 47, 30, 0.28);
}

.nav-menu-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nav-menu-toggle-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 1.375rem;
}

.nav-menu-toggle-bars > span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-header.menu-open .nav-menu-toggle-bars > span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.menu-open .nav-menu-toggle-bars > span:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .nav-menu-toggle-bars > span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header-menu {
  display: contents;
}

.site-header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
}

.site-mark {
  margin: 0;
}

.site-mark-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-mark-link img {
  width: 56px;
  height: auto;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
}

.site-nav a {
  font-size: 0.8125rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: 0.08em;
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom: 1px solid rgba(107, 47, 30, 0.45);
  padding-bottom: 0.1em;
}

.site-nav-external {
  margin: 0;
  font-size: 0.8125rem;
  text-align: right;
  letter-spacing: 0.06em;
}

.site-nav-external a {
  margin-left: 0.75rem;
  text-decoration: none;
  color: var(--ink-muted);
}

.site-nav-external a:hover {
  color: var(--accent);
}

.site-header-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
  min-width: 0;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.6);
}

.lang-toggle-btn {
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 0.28rem 0.62rem;
  border: none;
  background: transparent;
  color: var(--ink-muted);
  cursor: pointer;
  line-height: 1;
}

.lang-toggle-btn:hover {
  color: var(--accent);
}

.lang-toggle-btn--active {
  background: rgba(107, 47, 30, 0.12);
  color: var(--accent);
  font-weight: 500;
}

.site-nav-muted {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  max-width: 14rem;
  text-align: right;
  line-height: 1.45;
}

html.is-lang-en {
  quotes: "\"" "\"";
}

html.is-lang-en .hero-overlay .hero-lede,
html.is-lang-en .section-lede .lede-quote {
  letter-spacing: 0.02em;
}

.hero {
  position: relative;
  min-height: clamp(520px, 78vh, 860px);
  overflow: hidden;
  background: #2a231c;
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slides img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: heroFade 20s infinite;
}

.hero-slides img:nth-child(1) {
  animation-delay: 0s;
}

.hero-slides img:nth-child(2) {
  animation-delay: 5s;
}

.hero-slides img:nth-child(3) {
  animation-delay: 10s;
}

.hero-slides img:nth-child(4) {
  animation-delay: 15s;
}

@keyframes heroFade {
  0% {
    opacity: 0;
  }
  4% {
    opacity: 1;
  }
  24% {
    opacity: 1;
  }
  29% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(18, 14, 10, 0.12) 0%,
    rgba(18, 14, 10, 0.45) 50%,
    rgba(12, 9, 6, 0.78) 100%
  );
}

.hero-overlay {
  position: relative;
  z-index: 2;
  min-height: clamp(520px, 78vh, 860px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 4rem 1.5rem 3.5rem;
}

.hero-overlay-inner {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
}

.hero-title {
  margin: 0 0 1rem;
  font-family: var(--font-min);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  line-height: 1.15;
  color: #fdf8ef;
  letter-spacing: 0.18em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

.hero-title-lines {
  display: inline-block;
}

.hero-title-accent {
  display: inline-block;
  margin-top: 0.15em;
  border-bottom: 1px solid rgba(253, 248, 239, 0.35);
  padding-bottom: 0.12em;
}

.hero-lede {
  margin: 0;
  max-width: 28em;
  font-size: 0.95rem;
  color: rgba(253, 248, 239, 0.88);
  letter-spacing: 0.08em;
  line-height: 1.9;
}

.section {
  padding: clamp(3rem, 7vw, 5rem) 1.25rem;
}

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

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.prose-wide {
  max-width: 42rem;
}

.section-heading-jp {
  margin: 0 0 1.5rem;
  font-family: var(--font-min);
  font-weight: 600;
  font-size: clamp(1.45rem, 3.2vw, 1.85rem);
  letter-spacing: 0.14em;
  line-height: 1.35;
  color: var(--ink);
}

.section-heading-ruby {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--ink-muted);
  margin-bottom: 0.6rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--ink-muted);
  margin-top: -0.5rem;
  margin-bottom: 1.5rem;
}

.lede-quote {
  margin: 0;
  font-family: var(--font-min);
  font-size: clamp(1.05rem, 2.2vw, 1.2rem);
  line-height: 2.05;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.divider {
  border: none;
  height: 1px;
  margin: 0;
  background: var(--line);
}

.text-heading-minor {
  margin: 2rem 0 0.75rem;
  font-family: var(--font-min);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.text-list-plain {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

.text-list-plain li {
  margin-bottom: 0.35rem;
}

.text-list-links {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.text-list-links li {
  margin-bottom: 0.5rem;
}

.text-list-links a {
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 47, 30, 0.35);
  padding-bottom: 0.1em;
}

.text-list-links a:hover {
  border-bottom-color: var(--accent);
}

.text-list-links--inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
}

.text-list-links--inline li {
  margin-bottom: 0;
}

.text-link-inline {
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 47, 30, 0.35);
  padding-bottom: 0.08em;
}

.text-link-inline:hover {
  border-bottom-color: var(--accent);
}

.two-col-text {
  display: grid;
  gap: 2rem;
}

@media (min-width: 820px) {
  .two-col-text {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
    gap: 3rem;
  }
}

.aside-note {
  font-size: 0.95rem;
  color: var(--ink-muted);
  border-left: 1px solid var(--line);
  padding-left: 1.25rem;
}

.plain-address {
  font-style: normal;
  margin: 0 0 0.75rem;
  letter-spacing: 0.04em;
}

.tel {
  margin: 0 0 1.25rem;
}

.tel a {
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.tel a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.site-footer {
  padding: 2.5rem 1.25rem 3rem;
  background: #221c17;
  color: rgba(253, 248, 239, 0.78);
  font-size: 0.8125rem;
  line-height: 1.8;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.footer-name {
  margin: 0 0 0.75rem;
  font-family: var(--font-min);
  font-size: 1rem;
  letter-spacing: 0.18em;
  color: #fdf8ef;
}

.footer-copy {
  margin: 0 0 1rem;
  color: rgba(253, 248, 239, 0.65);
}

.footer-copy a {
  color: rgba(253, 248, 239, 0.88);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.footer-legal {
  margin: 0;
  color: rgba(253, 248, 239, 0.45);
  font-size: 0.75rem;
}

.section-lede {
  padding-bottom: clamp(2rem, 5vw, 3rem);
}

.editorial-band {
  margin: clamp(2rem, 4vw, 2.75rem) auto 0;
  padding: 0 clamp(1rem, 3vw, 1.75rem);
  max-width: var(--max);
}

.editorial-band img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: min(52vw, 420px);
}

.content-image {
  margin: 1.75rem 0 2rem;
}

.content-image img {
  width: 100%;
  height: auto;
  display: block;
}

.content-image figcaption {
  margin: 0.6rem 0 0;
  font-size: 0.8125rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

.school-layout {
  display: grid;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 900px) {
  .school-layout {
    grid-template-columns: 1fr min(46%, 480px);
    gap: clamp(2rem, 4vw, 3.25rem);
  }
}

.school-photo {
  margin: 0 0 0.5rem;
}

.school-photo img {
  width: 100%;
  height: auto;
  display: block;
}

.booking-demo {
  margin-top: 0.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.booking-demo-heading {
  margin: 0 0 0.4rem;
  font-family: var(--font-min);
  font-weight: 600;
  letter-spacing: 0.14em;
  font-size: 1rem;
}

.booking-demo-caption {
  margin: 0 0 1rem;
  font-size: 0.8rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.booking-toolbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.booking-month-title {
  margin: 0;
  text-align: center;
  font-family: var(--font-min);
  font-size: 0.98rem;
  letter-spacing: 0.14em;
}

.booking-nav {
  border: none;
  background: none;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1;
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  letter-spacing: 0.08em;
}

.booking-nav:disabled {
  opacity: 0.25;
  cursor: default;
}

.booking-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  margin-bottom: 0.35rem;
}

.booking-sun {
  color: #8b3d32;
}

.booking-sat {
  color: #3d5f7a;
}

.booking-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-bottom: 1rem;
}

.booking-cell {
  appearance: none;
  min-height: 2.6rem;
  border: none;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.75rem;
  line-height: 1.25;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  padding: 0.2rem;
  cursor: pointer;
}

.booking-cell.ghost {
  visibility: hidden;
  pointer-events: none;
  cursor: default;
}

.booking-cell.past {
  opacity: 0.28;
}

.booking-cell.closed,
.booking-cell.full {
  cursor: default;
}

.booking-cell.selected:not(:disabled) {
  background: rgba(107, 47, 30, 0.08);
  outline: 1px solid rgba(107, 47, 30, 0.35);
  outline-offset: -1px;
}

.booking-daynum {
  font-feature-settings: "palt";
}

.booking-mark {
  font-size: 0.58rem;
  letter-spacing: 0;
  opacity: 0.75;
}

.booking-slot-hint {
  margin: 0 0 0.25rem;
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.booking-slot-intro {
  margin: 0 0 0.65rem;
  font-size: 0.8625rem;
}

.booking-slot-fieldset {
  margin: 0;
  padding: 0;
  border: none;
}

.booking-slot-legend {
  padding: 0;
  margin: 0 0 0.45rem;
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.booking-slot-label {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
}

.booking-slot-label input {
  accent-color: var(--accent);
}

.booking-demo-submit {
  margin-top: 1rem;
  appearance: none;
  border: none;
  border-bottom: 1px solid var(--accent);
  background: transparent;
  padding: 0.35rem 0;
  font-family: var(--font-min);
  letter-spacing: 0.08em;
  font-size: 0.88rem;
  color: var(--accent);
  cursor: pointer;
}

.booking-demo-submit:disabled {
  opacity: 0.35;
  border-bottom-color: var(--line);
  color: var(--ink-muted);
  cursor: default;
}

.booking-demo-result {
  margin: 1rem 0 0;
  font-size: 0.8025rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

.subpage-hero-photo {
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 1.75rem);
  max-width: var(--max);
}

.subpage-hero-photo img {
  width: 100%;
  height: auto;
  display: block;
  max-height: min(72vw, 420px);
  object-fit: cover;
}

.two-col-photo {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
}

@media (min-width: 820px) {
  .two-col-photo {
    grid-template-columns: 0.92fr 1.08fr;
  }

  .two-col-photo.two-col-photo--flip {
    grid-template-columns: 1.08fr 0.92fr;
  }

  .two-col-photo.two-col-photo--flip .two-col-photo-fig {
    order: -1;
  }
}

.two-col-photo-fig {
  margin: 0;
}

.two-col-photo-fig img {
  width: 100%;
  height: auto;
  display: block;
}

.subpage-gallery {
  margin-top: 0;
  padding: 0 0 0.75rem !important;
}

.subpage-gallery .slideshow-inline {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1rem;
  aspect-ratio: 16 / 6.25;
  min-height: clamp(132px, 28vw, 240px);
  overflow: hidden;
  background: #2a231c;
}

.slideshow-inline img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: heroFade 20s infinite;
}

.slideshow-inline img:nth-child(1) {
  animation-delay: 0s;
}

.slideshow-inline img:nth-child(2) {
  animation-delay: 5s;
}

.slideshow-inline img:nth-child(3) {
  animation-delay: 10s;
}

.slideshow-inline img:nth-child(4) {
  animation-delay: 15s;
}

.subpage-intro {
  padding: clamp(1.75rem, 4vw, 2.5rem) 1.25rem 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.subpage-intro-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.breadcrumb {
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
}

.breadcrumb a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.breadcrumb-sep {
  padding: 0 0.4rem;
}

.subpage-heading {
  margin: 0 0 0.5rem;
  font-family: var(--font-min);
  font-weight: 600;
  font-size: clamp(1.65rem, 3.8vw, 2.05rem);
  letter-spacing: 0.14em;
}

.subpage-tagline {
  margin: 0 0 clamp(1.75rem, 4vw, 2.25rem);
  font-size: 0.875rem;
  color: var(--ink-muted);
  line-height: 1.75;
}

.text-muted-soft {
  font-size: 0.9em;
  color: var(--ink-muted);
}

.text-list-plain--ordered {
  list-style: decimal;
  padding-left: 1.35rem;
}

.text-list-soft {
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.footnote-soft {
  font-size: 0.84rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

.name-lede {
  font-family: var(--font-min);
  font-size: 1.12rem;
  letter-spacing: 0.1em;
  margin: 0 0 1rem;
}

.name-from {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}

.history-dl {
  margin: 0 0 2rem;
  padding: 0;
}

.history-dl-row {
  display: grid;
  gap: 0.2rem;
  margin-bottom: 1.05rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.history-dl-row:last-of-type {
  border-bottom: none;
}

.history-dl dt {
  font-family: var(--font-min);
  font-weight: 600;
  font-size: 0.9225rem;
  letter-spacing: 0.05em;
  margin: 0;
}

.history-dl dd {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.fade-in-up {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 720px) {
  .aside-note {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 1.25rem;
  }
}

@media (max-width: 768px) {
  /* backdrop-filter が fixed の包含ブロックになり、ドロワーがヘッダー内に張り付く／
     flex の真ん中で幅を取って白いブロックになるのを防ぐ */
  .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-header-inner {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.75rem;
  }

  .nav-menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-mark-link,
  .nav-menu-toggle {
    position: relative;
    z-index: 2102;
  }

  .site-nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 2100;
    margin: 0;
    border: none;
    padding: 0;
    background: rgba(28, 24, 20, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 0.26s ease,
      visibility 0.26s ease;
  }

  .site-header.menu-open .site-nav-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-header-menu {
    display: flex;
    flex-direction: column;
    gap: 1.35rem;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(88vw, 300px);
    max-width: 100%;
    margin: 0;
    padding: 4.5rem 1.35rem 1.5rem;
    background: var(--paper);
    border-left: 1px solid var(--line);
    box-shadow: -12px 0 36px rgba(28, 24, 20, 0.12);
    z-index: 2101;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transform: translateX(100%);
    transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
    overscroll-behavior: contain;
  }

  .site-header.menu-open .site-header-menu {
    transform: translateX(0);
  }

  .site-nav ul {
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 0.15rem;
  }

  .site-nav a {
    display: block;
    padding: 0.65rem 0;
    font-size: 0.875rem;
  }

  .site-header-aside {
    align-items: flex-start;
    border-top: 1px solid var(--line);
    padding-top: 1.1rem;
  }

  .site-nav-muted {
    text-align: left;
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-slides img,
  .slideshow-inline img {
    animation: none;
    opacity: 0;
  }

  .hero-slides img:first-child,
  .slideshow-inline img:first-child {
    opacity: 1;
  }

  .fade-in-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-nav-backdrop,
  .site-header-menu {
    transition: none !important;
  }
}