:root {
  --blue: rgb(3, 77, 156);
  --blue-dark: #02366d;
  --blue-soft: #eaf2fb;
  --yellow: rgb(254, 222, 0);
  --yellow-soft: #fff7b8;
  --ink: #172033;
  --muted: #5c667a;
  --line: #dce5f2;
  --bg: #ffffff;
  --bg-soft: #f6f9fd;
  --shadow: 0 18px 45px rgba(16, 47, 86, 0.12);
  --radius: 8px;
  --container: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 20;
  background: var(--yellow);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-weight: 700;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--yellow);
  font-weight: 800;
  line-height: 1;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
  line-height: 1.25;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.92rem;
  font-weight: 700;
}

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

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

.nav-tel {
  color: var(--blue) !important;
  white-space: nowrap;
}

.nav-cta {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink) !important;
  box-shadow: 0 8px 20px rgba(254, 222, 0, 0.25);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--blue);
}

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f9fbff 0%, #edf5ff 52%, #fff9c8 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(3, 77, 156, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(3, 77, 156, 0.08) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
}

.hero-inner {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 88px 24px 72px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 420px;
  gap: 54px;
  align-items: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-kicker.light {
  color: var(--yellow);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.35rem, 4vw, 4.7rem);
  line-height: 1.15;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(1.85rem, 3vw, 3rem);
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
  line-height: 1.35;
}

.hero-lead {
  max-width: 700px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
}

.button-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 26px rgba(3, 77, 156, 0.22);
}

.button-secondary {
  background: #fff;
  color: var(--blue);
  border: 1px solid var(--line);
}

.hero-facts {
  margin: 32px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.hero-facts div {
  padding: 14px;
  border: 1px solid rgba(3, 77, 156, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.74);
}

.hero-facts dt {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
}

.hero-facts dd {
  margin: 4px 0 0;
  font-size: 0.9rem;
}

.hero-card {
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-card img {
  width: 100%;
  height: 540px;
  object-fit: cover;
}

.hero-card figcaption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.88rem;
}

.hero-gallery {
  position: relative;
  max-width: var(--container);
  margin: -28px auto 0;
  padding: 0 24px 64px;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 1fr 0.9fr 1.1fr;
  gap: 12px;
}

.hero-gallery img {
  width: 100%;
  height: 150px;
  border: 4px solid #fff;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 12px 24px rgba(20, 54, 90, 0.14);
}

.hero-gallery img:nth-child(2),
.hero-gallery img:nth-child(4) {
  margin-top: 26px;
}

.section {
  padding: 88px 0;
}

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

.section-blue {
  background: var(--blue);
  color: #fff;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.two-column {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 52px;
}

.prose p,
.section-heading p,
.split-panel p,
.access-layout p,
.faq-layout p,
.contact-layout p {
  color: var(--muted);
}

.section-blue p {
  color: rgba(255, 255, 255, 0.84);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.course-grid,
.feature-grid,
.news-grid,
.fee-layout {
  display: grid;
  gap: 18px;
}

.course-grid {
  grid-template-columns: repeat(3, 1fr);
}

.course-card,
.fee-card,
.news-grid article,
.feature-grid article,
.teacher-panel,
.map-card,
.note-box,
.faq-list details,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 28px rgba(20, 54, 90, 0.06);
}

.course-card {
  padding: 24px;
}

.course-media {
  width: 100%;
  aspect-ratio: 16 / 10;
  margin-bottom: 18px;
  border-radius: 12px;
  object-fit: cover;
}

.course-card.featured {
  border-top: 5px solid var(--yellow);
}

.course-label {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
}

.course-card p,
.course-card li,
.fee-card p,
.news-grid p,
.feature-grid p,
.teacher-panel p,
.teacher-list,
.note-box p {
  color: var(--muted);
}

.course-card ul,
.teacher-list,
.map-card ul {
  margin: 16px 0 0;
  padding-left: 1.1rem;
}

.course-card li + li,
.teacher-list li + li,
.map-card li + li {
  margin-top: 7px;
}

.course-link {
  display: inline-flex;
  align-items: center;
  margin-top: 18px;
  color: var(--blue);
  font-weight: 800;
}

.course-link::after {
  content: "→";
  margin-left: 8px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.gallery-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 28px rgba(20, 54, 90, 0.06);
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery-card figcaption {
  padding: 16px 18px;
  color: var(--blue-dark);
  font-weight: 800;
}

.audio-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.audio-grid article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 28px rgba(20, 54, 90, 0.06);
}

.audio-grid p {
  min-height: 48px;
  color: var(--muted);
}

.audio-grid audio {
  width: 100%;
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
}

.feature-grid article {
  padding: 24px;
}

.feature-grid span {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--blue);
  font-weight: 900;
}

.split-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 44px;
  align-items: start;
}

.lesson-list {
  display: grid;
  gap: 12px;
}

.lesson-list div {
  padding: 18px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.lesson-list strong,
.lesson-list span {
  display: block;
}

.lesson-list span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.82);
}

.flow-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.flow-list li {
  position: relative;
  padding: 24px;
  border-top: 4px solid var(--yellow);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 28px rgba(20, 54, 90, 0.06);
}

.flow-list span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 800;
}

.flow-list p {
  color: var(--muted);
}

.fee-layout {
  grid-template-columns: repeat(2, 1fr);
}

.fee-card {
  padding: 24px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--blue);
  background: var(--blue-soft);
  font-weight: 800;
}

.fee-def {
  margin: 0;
  display: grid;
  gap: 14px;
}

.fee-def div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.fee-def dt {
  color: var(--blue);
  font-weight: 800;
}

.fee-def dd {
  margin: 0;
}

.note-box {
  margin-top: 18px;
  padding: 22px;
  border-left: 6px solid var(--yellow);
}

.teacher-panel {
  padding: 28px;
}

.teacher-profile {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 22px;
  align-items: start;
}

.teacher-profile img {
  width: 160px;
  aspect-ratio: 1;
  border-radius: 14px;
  object-fit: cover;
}

.access-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 30px;
}

.info-list {
  margin-top: 24px;
  display: grid;
  gap: 10px;
}

.info-list div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.info-list span {
  color: var(--blue);
  font-weight: 800;
}

.map-card {
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(3, 77, 156, 0.92), rgba(2, 54, 109, 0.96)),
    radial-gradient(circle at top right, var(--yellow), transparent 42%);
  color: #fff;
}

.map-card ul {
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 24px;
}

.map-card .button-primary {
  background: var(--yellow);
  color: var(--ink);
  box-shadow: none;
}

.news-grid {
  grid-template-columns: repeat(3, 1fr);
}

.news-grid article {
  overflow: hidden;
  padding: 0;
}

.news-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.news-grid span,
.news-grid h3,
.news-grid p {
  margin-left: 24px;
  margin-right: 24px;
}

.news-grid span {
  display: inline-flex;
  margin-top: 22px;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
}

.news-grid p {
  margin-bottom: 24px;
}

.video-badge {
  color: #8a5c00;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 40px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--blue-dark);
  font-weight: 800;
}

.faq-list p {
  margin-bottom: 0;
}

.contact-section {
  padding: 88px 0;
  background: var(--blue);
  color: #fff;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 44px;
  align-items: start;
}

.contact-layout p {
  color: rgba(255, 255, 255, 0.84);
}

.contact-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  font-weight: 800;
}

.privacy-note {
  font-size: 0.9rem;
}

.contact-form {
  padding: 28px;
  color: var(--ink);
}

.form-honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form label {
  display: block;
  margin: 0 0 8px;
  font-weight: 800;
}

.contact-form label span {
  margin-left: 8px;
  color: var(--blue);
  font-size: 0.78rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  margin-bottom: 16px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
}

.contact-form textarea {
  resize: vertical;
}

.form-status {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--muted) !important;
  font-weight: 700;
}

.form-status.success {
  color: #0a7f3f !important;
}

.form-status.error {
  color: #b42318 !important;
}

.site-footer {
  padding: 34px 0;
  background: #101928;
  color: rgba(255, 255, 255, 0.84);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr auto;
  gap: 24px;
  align-items: center;
}

.site-footer strong {
  color: #fff;
}

.site-footer p {
  margin: 6px 0 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 1040px) {
  .site-nav {
    gap: 12px;
    font-size: 0.86rem;
  }

  .hero-inner,
  .course-grid,
  .feature-grid,
  .news-grid,
  .gallery-grid,
  .audio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-copy {
    grid-column: 1 / -1;
  }

  .hero-gallery {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-card {
    max-width: 520px;
  }

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

@media (max-width: 840px) {
  .header-inner {
    padding: 12px 18px;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 69px 14px auto 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 13px 12px;
  }

  .nav-cta {
    text-align: center;
  }

  .section,
  .contact-section {
    padding: 64px 0;
  }

  .hero-inner {
    padding-top: 58px;
    grid-template-columns: 1fr;
  }

  .hero-facts,
  .two-column,
  .split-panel,
  .fee-layout,
  .access-layout,
  .faq-layout,
  .contact-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-card img {
    height: 420px;
  }

  .hero-gallery {
    margin-top: -18px;
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-gallery img {
    height: 170px;
  }

  .hero-gallery img:nth-child(2),
  .hero-gallery img:nth-child(4) {
    margin-top: 0;
  }

  .teacher-profile {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .hero-inner,
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-actions,
  .contact-actions {
    flex-direction: column;
  }

  .button,
  .contact-actions a {
    width: 100%;
  }

  .course-grid,
  .feature-grid,
  .flow-list,
  .news-grid,
  .gallery-grid,
  .audio-grid {
    grid-template-columns: 1fr;
  }

  .hero-card img {
    height: 330px;
  }

  .hero-gallery {
    padding-left: 18px;
    padding-right: 18px;
    grid-template-columns: 1fr;
  }

  .hero-gallery img {
    height: 210px;
  }

  .course-card,
  .fee-card,
  .feature-grid article,
  .teacher-panel,
  .map-card,
  .contact-form {
    padding: 20px;
  }

  .fee-def div,
  .info-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  table {
    font-size: 0.85rem;
  }

  th,
  td {
    padding: 9px 8px;
  }
}