:root {
  --color-ink: #2c2c2c;
  --color-paper: #f5f1e8;
  --color-accent: #c73e3a;
  --color-soft-black: rgba(44, 44, 44, 0.85);
  --color-muted: #6f6a63;
  --color-border: rgba(44, 44, 44, 0.12);
  --color-card: rgba(255, 255, 255, 0.92);
  --font-serif: "Noto Serif JP", "Yu Mincho", YuMincho, "Hiragino Mincho ProN",
    "Hiragino Mincho Pro", "MS PMincho", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "YuGothic", "MS PGothic", sans-serif;
  --max-width: 1100px;
  --gutter: clamp(1.5rem, 2vw, 3rem);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background-color: var(--color-paper);
  line-height: 1.8;
  letter-spacing: 0.03em;
}

img {
  max-width: 100%;
  display: block;
}

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

a:hover,
a:focus {
  color: var(--color-accent);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.container {
  width: min(100% - 2 * var(--gutter), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 241, 232, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding-block: 0.625rem;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  color: var(--color-ink);
  font-family: var(--font-serif);
  flex-shrink: 0;
}

.brand-main {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  letter-spacing: 0.15em;
}

.brand-sub {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  min-width: 0;
  justify-self: center;
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  margin-block: 4px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-list a {
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  transition: background-color 0.3s ease, color 0.3s ease;
  white-space: nowrap;
}

.nav-list a:hover,
.nav-list a:focus {
  background-color: rgba(199, 62, 58, 0.15);
  color: var(--color-accent);
}

.nav-list .is-current {
  color: var(--color-accent);
  background-color: rgba(199, 62, 58, 0.12);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  background-color: var(--color-accent);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  flex-shrink: 0;
  justify-self: end;
}

.cta-button:hover,
.cta-button:focus {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(199, 62, 58, 0.2);
}

.hero {
  position: relative;
  min-height: 70vh;
  color: #fff;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at top left,
    rgba(255, 255, 255, 0.2),
    rgba(44, 44, 44, 0.8)
  );
  filter: grayscale(0.2);
}

.hero-overlay {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  min-height: inherit;
  background: linear-gradient(135deg, rgba(44, 44, 44, 0.85), rgba(44, 44, 44, 0.65));
}

.hero-content {
  padding-block: clamp(5rem, 10vw, 9rem);
  display: grid;
  gap: 1.5rem;
  max-width: 680px;
}

.hero-label {
  font-size: 0.95rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  opacity: 0.85;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.4;
  margin: 0;
}

.hero-text {
  font-size: 1.05rem;
  color: #f5f1e8;
  margin: 0;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease,
    color 0.3s ease;
}

.btn.primary {
  background-color: var(--color-accent);
  color: #fff;
  box-shadow: 0 10px 25px rgba(199, 62, 58, 0.25);
}

.btn.primary:hover,
.btn.primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(199, 62, 58, 0.28);
}

.btn.outline {
  border: 1px solid #fff;
  color: #fff;
  background: transparent;
}

.btn.outline:hover,
.btn.outline:focus {
  background-color: rgba(255, 255, 255, 0.12);
}

.btn.line {
  background-color: #06c755;
  color: #fff;
}

.btn.line:hover,
.btn.line:focus {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(6, 199, 85, 0.2);
}

.btn-submit {
  width: 100%;
  margin-top: 1rem;
}

.section {
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

.section-header {
  text-align: center;
  margin-bottom: clamp(2rem, 6vw, 3rem);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 0.75rem;
}

.section-lead {
  margin: 0 auto;
  max-width: 640px;
  color: var(--color-muted);
  font-size: 1rem;
}

.feature-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: 0 18px 36px rgba(44, 44, 44, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-top: 0;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 46px rgba(44, 44, 44, 0.12);
}

.intro-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.intro-text h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-top: 1rem;
}

.text-link::after {
  content: "›";
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

.texture-card {
  position: relative;
  padding: 3rem 2.5rem;
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(245, 241, 232, 0.95), rgba(255, 255, 255, 0.75));
  border: 1px solid rgba(44, 44, 44, 0.08);
  overflow: hidden;
  box-shadow: 0 18px 30px rgba(44, 44, 44, 0.12);
}

.texture-overlay {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 100c40-20 80-20 120 0s80 20 120 0 80-20 120 0 80 20 120 0' stroke='%23c73e3a' stroke-width='0.4' fill='none' opacity='0.12'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
  pointer-events: none;
}

.texture-card p {
  position: relative;
  margin: 0;
  color: var(--color-muted);
}

.instagram {
  background-color: rgba(255, 255, 255, 0.7);
}

.instagram-embed {
  border-radius: 18px;
  border: 1px dashed rgba(44, 44, 44, 0.2);
  padding: 2.5rem;
  text-align: center;
  background: #fff;
  color: var(--color-muted);
  min-height: 280px;
  display: grid;
  place-content: center;
}

.site-footer {
  background: #1e1d1b;
  color: rgba(255, 255, 255, 0.82);
  padding-block: 3rem 1.5rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 2rem;
}

.brand-footer {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  letter-spacing: 0.2em;
}

.sns-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.sns-links a {
  color: rgba(255, 255, 255, 0.82);
}

.sns-links a:hover,
.sns-links a:focus {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.page-hero {
  padding-block: clamp(4rem, 7vw, 5.5rem);
  background: linear-gradient(120deg, rgba(44, 44, 44, 0.08), rgba(199, 62, 58, 0.12));
}

.page-hero h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.6rem);
}

.page-hero p {
  margin: 0;
  color: var(--color-muted);
}

.media-grid .media-cards {
  display: grid;
  gap: 1.8rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.media-card {
  margin: 0;
}

.media-placeholder {
  border-radius: 16px;
  border: 1px dashed rgba(44, 44, 44, 0.25);
  background: repeating-linear-gradient(
      135deg,
      rgba(44, 44, 44, 0.08),
      rgba(44, 44, 44, 0.08) 12px,
      rgba(44, 44, 44, 0.12) 12px,
      rgba(44, 44, 44, 0.12) 24px
    ),
    #fff;
  aspect-ratio: 4 / 3;
}

.media-card figcaption {
  text-align: center;
  margin-top: 0.75rem;
  color: var(--color-muted);
}

.highlight {
  background: rgba(44, 44, 44, 0.04);
}

.highlight-card {
  border-radius: 18px;
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px solid rgba(44, 44, 44, 0.08);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(245, 241, 232, 0.9));
  box-shadow: 0 20px 38px rgba(44, 44, 44, 0.12);
}

.instructor-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.instructor-photo {
  aspect-ratio: 3 / 4;
  border-radius: 18px;
  border: 1px dashed rgba(44, 44, 44, 0.25);
  background: linear-gradient(
    160deg,
    rgba(199, 62, 58, 0.12),
    rgba(44, 44, 44, 0.06)
  );
}

.instructor-name {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3vw, 2.4rem);
  margin-bottom: 0.3rem;
}

.instructor-ruby {
  font-size: 0.9rem;
  color: var(--color-muted);
  display: block;
  margin-top: 0.3rem;
}

.instructor-title {
  font-weight: 600;
  letter-spacing: 0.1em;
}

.awards ul {
  margin: 0;
  padding-left: 1.2rem;
}

.course-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.course-card {
  background: #fff;
  border-radius: 16px;
  padding: clamp(2rem, 4vw, 2.6rem);
  border: 1px solid rgba(44, 44, 44, 0.08);
  box-shadow: 0 16px 30px rgba(44, 44, 44, 0.08);
}

.course-card h2 {
  font-family: var(--font-serif);
  margin-top: 0;
}

.course-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  gap: 0.4rem;
}

.course-list strong {
  font-weight: 600;
  font-family: var(--font-sans);
}

.fees {
  background: rgba(44, 44, 44, 0.03);
}

.fee-table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid rgba(44, 44, 44, 0.08);
  background: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.fee-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

.fee-table th,
.fee-table td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid rgba(44, 44, 44, 0.08);
}

.fee-table thead {
  background: rgba(44, 44, 44, 0.05);
  font-family: var(--font-serif);
}

.fee-notes {
  list-style: none;
  padding: 0;
  margin-top: 1.5rem;
  color: var(--color-muted);
  display: grid;
  gap: 0.4rem;
}

.form-section {
  background: rgba(44, 44, 44, 0.04);
}

.form-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.form-card,
.form-aside section {
  background: #fff;
  border-radius: 16px;
  padding: clamp(2rem, 4vw, 2.8rem);
  border: 1px solid rgba(44, 44, 44, 0.08);
  box-shadow: 0 18px 32px rgba(44, 44, 44, 0.08);
}

.trial-form {
  display: grid;
  gap: 1.2rem;
}

.form-field {
  display: grid;
  gap: 0.5rem;
}

.form-field label {
  font-weight: 600;
  letter-spacing: 0.08em;
}

.form-field input,
.form-field select,
.form-field textarea {
  border-radius: 8px;
  border: 1px solid rgba(44, 44, 44, 0.2);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 4px rgba(199, 62, 58, 0.1);
}

.google-form-embed,
.map-embed {
  border-radius: 16px;
  border: 1px dashed rgba(44, 44, 44, 0.25);
  background: repeating-linear-gradient(
      135deg,
      rgba(44, 44, 44, 0.04),
      rgba(44, 44, 44, 0.04) 10px,
      rgba(44, 44, 44, 0.08) 10px,
      rgba(44, 44, 44, 0.08) 20px
    ),
    #fff;
  min-height: 260px;
  display: grid;
  place-content: center;
  color: var(--color-muted);
  text-align: center;
  padding: 1.5rem;
}

.visit-section {
  background: rgba(255, 255, 255, 0.7);
}

.step-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.step-card {
  border-radius: 14px;
  border: 1px solid rgba(44, 44, 44, 0.08);
  padding: 1.8rem;
  background: #fff;
  box-shadow: 0 16px 28px rgba(44, 44, 44, 0.08);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.access-grid,
.contact-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.access-text {
  margin: 0.4rem 0;
}

.access-note {
  color: var(--color-muted);
}

.gallery-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.gallery-item {
  margin: 0;
}

.gallery-placeholder {
  border-radius: 14px;
  border: 1px dashed rgba(44, 44, 44, 0.2);
  aspect-ratio: 3 / 4;
  background: linear-gradient(160deg, rgba(44, 44, 44, 0.08), rgba(199, 62, 58, 0.1));
}

.gallery-item figcaption {
  text-align: center;
  margin-top: 0.6rem;
  color: var(--color-muted);
}

.news-section {
  background: rgba(44, 44, 44, 0.03);
}

.news-card {
  background: #fff;
  border-radius: 16px;
  padding: clamp(1.8rem, 4vw, 2.4rem);
  border: 1px solid rgba(44, 44, 44, 0.08);
  box-shadow: 0 14px 28px rgba(44, 44, 44, 0.08);
  display: grid;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.news-meta {
  font-size: 0.9rem;
  color: var(--color-muted);
  letter-spacing: 0.1em;
}

.faq-list {
  display: grid;
  gap: 1.5rem;
}

.faq-item {
  background: #fff;
  border-radius: 14px;
  padding: clamp(1.8rem, 4vw, 2.4rem);
  border: 1px solid rgba(44, 44, 44, 0.08);
  box-shadow: 0 16px 30px rgba(44, 44, 44, 0.08);
}

.faq-item h2 {
  margin-top: 0;
  font-family: var(--font-serif);
}

.contact-card {
  background: #fff;
  border-radius: 16px;
  padding: clamp(2rem, 4vw, 2.6rem);
  border: 1px solid rgba(44, 44, 44, 0.08);
  box-shadow: 0 18px 32px rgba(44, 44, 44, 0.08);
}

.contact-detail {
  font-size: 1.1rem;
  font-weight: 600;
}

.contact-note {
  color: var(--color-muted);
}

.policy-body {
  display: grid;
  gap: 1.5rem;
}

.policy-body article {
  background: #fff;
  border-radius: 14px;
  padding: clamp(1.8rem, 4vw, 2.4rem);
  border: 1px solid rgba(44, 44, 44, 0.06);
  box-shadow: 0 12px 26px rgba(44, 44, 44, 0.06);
}

.policy-body h2 {
  margin-top: 0;
  font-family: var(--font-serif);
  font-size: 1.3rem;
}

.policy-body ul {
  margin: 0.8rem 0;
  padding-left: 1.2rem;
}

@media (max-width: 960px) {
  .site-nav {
    position: relative;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav-list {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: rgba(245, 241, 232, 0.98);
    border: 1px solid var(--color-border);
    border-radius: 18px;
    padding: 1.2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    min-width: 220px;
    box-shadow: 0 14px 38px rgba(44, 44, 44, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  }

  .nav-list.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

@media (max-width: 1200px) {
  .header-inner {
    grid-template-columns: auto auto;
    grid-template-areas:
      "brand cta"
      "nav nav";
    row-gap: 0.75rem;
  }

  .brand {
    grid-area: brand;
  }

  .site-nav {
    grid-area: nav;
  }

  .cta-button {
    grid-area: cta;
  }
}

@media (max-width: 600px) {
  .header-inner {
    padding-block: 0.5rem;
    grid-template-columns: 1fr;
    grid-template-areas:
      "brand"
      "cta"
      "nav";
    gap: 0.75rem;
    align-items: start;
  }

  .brand {
    grid-area: brand;
  }

  .site-nav {
    grid-area: nav;
    width: 100%;
    justify-content: flex-end;
  }

  .cta-button {
    width: 100%;
    text-align: center;
    grid-area: cta;
  }

  .hero {
    min-height: 60vh;
  }

  .hero-content {
    padding-block: 4rem;
  }

  .hero-actions {
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .footer-grid {
    gap: 1.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}