:root {
  --blue: #2563eb;
  --navy: #172554;
  --ink: #111827;
  --muted: #5b6472;
  --line: #dbe4f0;
  --paper: #ffffff;
  --soft: #f6f8fc;
  --green: #16a34a;
  --cyan: #0891b2;
  --purple: #7c3aed;
  --yellow: #f5c84c;
  --coral: #f9735b;
  --shadow: 0 18px 50px rgba(17, 24, 39, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Yu Gothic UI", sans-serif;
  line-height: 1.7;
  background: var(--paper);
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
  padding: 14px clamp(18px, 4vw, 48px);
  color: #fff;
  transition: background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
}

.brand-name,
.brand-sub {
  display: block;
  line-height: 1.1;
}

.brand-sub {
  margin-top: 4px;
  font-size: 12px;
  font-weight: 700;
  opacity: 0.78;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  font-weight: 800;
}

.site-nav a {
  padding: 10px 0;
}

.site-nav .nav-cta {
  min-width: 104px;
  padding: 10px 16px;
  text-align: center;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  place-items: center;
}

.site-header.is-scrolled .nav-toggle,
.site-header.is-open .nav-toggle {
  border-color: var(--line);
  background: #fff;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 3px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 94vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(2, 132, 199, 0.78) 0%, rgba(14, 165, 233, 0.52) 38%, rgba(14, 165, 233, 0.10) 74%),
    linear-gradient(0deg, rgba(14, 165, 233, 0.06), rgba(14, 165, 233, 0.06));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  padding: 128px clamp(20px, 5vw, 72px) 64px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--yellow);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(46px, 8vw, 88px);
  line-height: 1.05;
  letter-spacing: 0;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.60), 0 4px 40px rgba(0, 0, 0, 0.35);
}

.hero-lead {
  max-width: 620px;
  margin: 24px 0 0;
  font-size: clamp(17px, 2.1vw, 22px);
  font-weight: 700;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.50);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  min-width: 154px;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 700;
  line-height: 1.35;
}

.button.primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.34);
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.66);
  background: rgba(255, 255, 255, 0.28);
}

.hero-actions .button.secondary {
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.55);
}

.button.light {
  border-color: rgba(255, 255, 255, 0.55);
}


.section {
  padding: clamp(68px, 9vw, 112px) clamp(20px, 4vw, 48px);
}

.section-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.section-heading {
  max-width: 100%;
  margin-bottom: 34px;
}

.section h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.22;
  letter-spacing: 0;
}

.section-heading p:not(.section-kicker),
.intro p,
.teacher p,
.access p,
.contact p {
  color: var(--muted);
  font-weight: 650;
}

.intro {
  background: var(--soft);
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.intro-title span {
  white-space: nowrap;
}

.courses {
  background: #fff;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.course-card,
.price-panel,
.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(17, 24, 39, 0.08);
}

.course-card {
  min-height: 390px;
  padding: 28px;
  border-top: 8px solid var(--blue);
}

.course-green {
  border-top-color: var(--green);
}

.course-cyan {
  border-top-color: var(--cyan);
}

.course-purple {
  border-top-color: var(--purple);
}

.course-badge {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 10px;
  color: var(--navy);
  background: #eef4ff;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
}

.course-card h3 {
  min-height: 74px;
  margin: 18px 0 12px;
  color: var(--navy);
  font-size: 24px;
  line-height: 1.3;
}

.course-card p {
  color: var(--muted);
  font-weight: 650;
}

.course-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.course-tools span {
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--navy);
  background: #eef4ff;
  font-size: 12px;
  font-weight: 650;
  line-height: 1.35;
}

.course-card ul,
.access-list {
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.course-card li,
.access-list li {
  position: relative;
  padding-left: 24px;
  margin: 10px 0;
  font-weight: 800;
}

.course-card li::before,
.access-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--yellow);
  transform: translateY(-50%);
}

.pricing {
  background: #f7f9fd;
}

.price-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.price-notes span {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--navy);
  background: #e8efff;
  font-size: 13px;
  font-weight: 650;
}

.pricing-tables {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.price-panel {
  overflow: hidden;
}

.price-panel h3 {
  margin: 0;
  padding: 20px 22px;
  color: #fff;
  background: var(--navy);
  font-size: 22px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  padding: 16px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--navy);
  background: #f0f5ff;
  font-size: 13px;
}

td:nth-child(3),
td:nth-child(4) {
  font-weight: 950;
  color: var(--blue);
}

.teacher-grid,
.access-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
}

.teacher-visual {
  min-height: 360px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 22px;
  border-radius: 8px;
  color: #fff;
  background: var(--navy);
  box-shadow: var(--shadow);
}

.teacher-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.02) 28%, rgba(15, 23, 42, 0.76) 100%);
}

.teacher-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 32%;
}


.faq {
  background: var(--soft);
}

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

.faq-item {
  padding: 0 22px;
}

.faq-q {
  margin: 0;
  padding: 18px 0 14px;
  color: var(--navy);
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}

.faq-a {
  margin: 0;
  padding: 14px 0 22px;
  color: var(--muted);
  font-weight: 650;
}

.access {
  background: #fff;
}

.access-note {
  margin-top: 4px;
  font-size: 12.5px;
}

.access-grid {
  grid-template-columns: 1.1fr 0.9fr;
}

#access-title {
  word-break: keep-all;
}

.map-card {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border-radius: 8px;
  color: #fff;
  background: var(--navy);
  box-shadow: var(--shadow);
}

.map-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.00) 30%, rgba(15, 23, 42, 0.52) 100%);
}

.map-card img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  object-position: center;
}

.map-card-info {
  position: absolute;
  z-index: 1;
  left: 26px;
  right: 26px;
  bottom: 26px;
  display: grid;
  gap: 8px;
}

.map-card-info span {
  color: #60a5fa;
  font-weight: 950;
}


.map-card-info a {
  width: fit-content;
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 8px;
  background: #fff;
  color: var(--blue);
  font-weight: 700;
}

/* バイブコーディング注釈 */
.vibe-note {
  margin-top: 24px;
  padding: 14px 18px;
  border-radius: 8px;
  background: #eef4ff;
  color: var(--muted);
  font-size: 13.5px;
  font-weight: 650;
  line-height: 1.65;
}

/* レッスン日程 */
.schedule-block {
  margin-top: 32px;
  padding: 28px 32px;
  border-radius: 10px;
  background: #f8faff;
  border: 1px solid var(--line);
}

.schedule-title {
  margin: 0 0 22px;
  padding-bottom: 16px;
  color: var(--navy);
  font-size: 22px;
  font-weight: 800;
  border-bottom: 1px solid var(--line);
}

.schedule-body {
  display: flex;
  flex-direction: column;
}

.schedule-category {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 0;
}

.schedule-category + .schedule-category {
  border-top: 1px solid var(--line);
}

.schedule-cat-label {
  margin: 0;
  color: var(--blue);
  font-size: 19px;
  font-weight: 800;
}

.schedule-day {
  padding-left: 18px;
  border-left: 3px solid var(--line);
}

.schedule-day-name {
  margin: 0 0 5px;
  color: var(--navy);
  font-size: 16px;
  font-weight: 800;
}

.schedule-time {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 15px;
  font-weight: 650;
}

/* オープンキャンペーン */
.campaign-note {
  margin: 0 0 18px;
  padding: 13px 18px;
  border-radius: 8px;
  background: #fffbeb;
  color: #78350f;
  font-size: 14px;
  font-weight: 800;
  border: 1px solid #fbbf24;
}

/* フッター SNS */
.social-icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: block;
  flex-shrink: 0;
}

.footer-social {
  display: flex;
  gap: 20px;
  align-items: center;
}

.footer-social-link {
  display: flex;
  align-items: center;
  gap: 9px;
  opacity: 0.82;
  transition: opacity 150ms;
  font-size: 13px;
  font-weight: 700;
  color: #d9e3f7;
}

.footer-social-link:hover {
  opacity: 1;
}

.contact {
  padding: clamp(72px, 9vw, 110px) clamp(20px, 4vw, 48px);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(23, 37, 84, 0.96), rgba(37, 99, 235, 0.9)),
    linear-gradient(90deg, var(--blue), var(--cyan));
}

.contact-inner {
  width: min(900px, 100%);
  margin: 0 auto;
}

.contact h2 {
  margin: 0;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.18;
  letter-spacing: 0;
}

.contact p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 750;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 26px clamp(20px, 4vw, 48px);
  color: #d9e3f7;
  background: #0f172a;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    top: 74px;
    left: 16px;
    right: 16px;
    display: none;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    color: var(--ink);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: grid;
    gap: 4px;
  }

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

  .intro-grid,
  .course-grid,
  .pricing-tables,
  .teacher-grid,
  .access-grid {
    grid-template-columns: 1fr;
  }

  .course-card {
    min-height: auto;
  }

  .course-card h3 {
    min-height: 0;
  }

}

@media (max-width: 620px) {
  .site-header {
    min-height: 68px;
    padding: 12px 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand-mark img {
    transform: scale(1.04);
  }

  .brand-sub {
    display: none;
  }

  .site-nav {
    top: 68px;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-image {
    object-position: 58% center;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(2, 132, 199, 0.82) 0%, rgba(14, 165, 233, 0.62) 68%, rgba(14, 165, 233, 0.24) 100%);
  }

  .hero-content {
    padding: 110px 20px 42px;
  }

  .hero-actions,
  .contact-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .course-card,
  .teacher-visual,
  .map-card {
    padding: 24px;
  }

  .map-card {
    padding: 0;
  }

  .teacher-visual {
    min-height: 300px;
  }

  #access-title {
    font-size: clamp(27px, 7vw, 34px);
  }

  th,
  td {
    padding: 12px 10px;
    font-size: 13px;
  }

  .schedule-block {
    padding: 20px;
  }

  .footer-social {
    gap: 14px;
  }
}