:root {
  color-scheme: light;
  --pink: #f756b4;
  --hot-pink: #f41493;
  --yellow: #ffe84b;
  --orange: #ff8a26;
  --green: #45c857;
  --blue: #3da7ff;
  --ink: #282238;
  --muted: #6c6378;
  --line: #eee3ef;
  --paper: #fff8fd;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(126, 57, 108, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px clamp(18px, 4vw, 56px);
  background:
    linear-gradient(90deg, rgba(255, 232, 75, 0.2), transparent 24%),
    rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 318px;
}

.brand-logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 74px;
  height: 42px;
  padding: 5px 7px;
  background: var(--white);
  border: 2px solid #ffd2ec;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(80, 42, 72, 0.08);
}

.brand-logo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.15;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.nav {
  display: flex;
  gap: 8px;
  color: var(--hot-pink);
  font-size: 13px;
  font-weight: 900;
}

.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  background: var(--white);
  border: 2px solid #ffd2ec;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(80, 42, 72, 0.07);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.nav a:hover {
  color: var(--hot-pink);
  border-color: var(--hot-pink);
  transform: translateY(-2px);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: 800;
  letter-spacing: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.header-cta,
.button.primary {
  color: var(--white);
  background: var(--hot-pink);
  box-shadow: 0 12px 28px rgba(244, 20, 147, 0.28);
}

.button.secondary {
  color: var(--hot-pink);
  background: var(--white);
  border: 2px solid #ffd2ec;
}

.button.line {
  color: var(--white);
  background: #06c755;
}

.header-cta:hover,
.button:hover {
  transform: translateY(-2px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(42px, 6vw, 78px) clamp(20px, 5vw, 72px) 44px;
  overflow: hidden;
  background:
    linear-gradient(110deg, rgba(255, 232, 75, 0.28), transparent 34%),
    radial-gradient(circle at 88% 10%, rgba(61, 167, 255, 0.26), transparent 30%),
    linear-gradient(180deg, #fff8fd 0%, #ffffff 74%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 16px;
  background: repeating-linear-gradient(90deg, var(--pink) 0 44px, var(--yellow) 44px 88px, var(--blue) 88px 132px);
}

.hero-copy,
.hero-visual,
.section-heading,
.trial-copy,
.schedule-box,
.contact > * {
  position: relative;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--hot-pink);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 780px;
  margin-bottom: 20px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.35;
}

.lead {
  max-width: 700px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 22px;
}

.trial-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-points li {
  padding: 8px 13px;
  color: #5b2850;
  font-weight: 800;
  background: #fff0fa;
  border: 1px solid #ffd2ec;
  border-radius: 999px;
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -28px -20px auto auto;
  width: min(38vw, 360px);
  aspect-ratio: 1;
  background: repeating-conic-gradient(from 8deg, rgba(255, 232, 75, 0.9) 0 10deg, rgba(255, 255, 255, 0.9) 10deg 20deg);
  border-radius: 50%;
  filter: drop-shadow(0 16px 22px rgba(255, 195, 0, 0.22));
}

.hero-visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: min(58vw, 540px);
  object-fit: cover;
  object-position: center;
  border: 6px solid var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-badge {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 2;
  padding: 10px 18px;
  color: var(--hot-pink);
  font-size: 28px;
  font-weight: 900;
  background: var(--white);
  border: 3px solid #ffd2ec;
  border-radius: 999px;
  box-shadow: 0 14px 28px rgba(80, 42, 72, 0.16);
}

section {
  position: relative;
  padding: clamp(58px, 8vw, 104px) clamp(20px, 5vw, 72px);
}

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

.section-heading {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.feature-grid,
.class-grid,
.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1120px;
  margin: 0 auto;
}

.announcement-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 960px;
}

.instagram-embed-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
  max-width: 1120px;
  margin: 24px auto 18px;
}

.instagram-frame {
  display: block;
  width: 100%;
  min-height: 560px;
  background: var(--white) !important;
  border: 0;
  border-radius: 8px !important;
  box-shadow: 0 14px 30px rgba(80, 42, 72, 0.08) !important;
}

.feature-grid article,
.topic-grid article,
.schedule-box,
.price-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 30px rgba(80, 42, 72, 0.08);
}

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

.feature-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 16px;
  color: var(--white);
  font-weight: 900;
  background: var(--blue);
  border-radius: 50%;
}

.feature-grid p,
.class-card p,
.message-panel p,
.trial p,
.topic-grid p,
.contact p {
  color: var(--muted);
}

.message {
  padding-top: clamp(52px, 7vw, 84px);
  padding-bottom: clamp(52px, 7vw, 84px);
}

.message-panel {
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 48px);
  background:
    linear-gradient(90deg, rgba(247, 86, 180, 0.1), transparent 42%),
    var(--white);
  border: 2px solid #ffd2ec;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.message-panel h2 {
  max-width: 760px;
}

.message-panel p:last-child {
  margin-bottom: 0;
}

.event-highlight {
  margin-top: 24px;
  padding: 22px;
  background: #fff7fd;
  border: 1px solid #ffd2ec;
  border-radius: 8px;
}

.event-highlight h3 {
  margin-bottom: 6px;
}

.event-highlight p {
  margin-bottom: 0;
}

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

.class-card {
  position: relative;
  min-height: 320px;
  padding: 32px;
  overflow: hidden;
  color: var(--ink);
  border: 4px solid var(--class-color);
  border-radius: 8px;
}

.class-card::after {
  content: "";
  position: absolute;
  right: -36px;
  bottom: -42px;
  width: 150px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: repeating-conic-gradient(var(--class-color) 0 8deg, transparent 8deg 16deg);
  opacity: 0.22;
}

.class-card.orange {
  --class-color: #d95c00;
  background: #fff7ee;
}

.class-card.green {
  --class-color: #169a35;
  background: #f0fff2;
}

.class-card h3 {
  display: inline-flex;
  padding: 4px 18px;
  color: var(--white);
  background: var(--class-color);
  border-radius: 999px;
}

.target {
  color: var(--hot-pink) !important;
  font-size: 20px;
  font-weight: 900;
}

dl {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
}

dl div {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 10px;
}

dt {
  color: var(--muted);
  font-weight: 800;
}

dd {
  margin: 0;
  color: var(--ink);
  font-weight: 900;
}

.price-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  max-width: 760px;
  margin: 0 auto;
  overflow: hidden;
}

.price-item {
  padding: 28px;
  text-align: center;
}

.price-item + .price-item {
  border-left: 1px solid var(--line);
}

.price-label {
  margin-bottom: 6px;
  color: var(--muted);
  font-weight: 900;
}

.price-value {
  margin: 0;
  color: var(--hot-pink);
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 900;
  line-height: 1;
}

.price-value span {
  font-size: 24px;
}

.price-detail {
  grid-column: 1 / -1;
  margin: 0;
  padding: 16px 22px;
  color: var(--muted);
  text-align: center;
  background: #fff0fa;
  border-top: 1px solid var(--line);
}

.price-detail p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.price-detail p:first-child {
  color: var(--hot-pink);
  font-weight: 900;
}

.trial,
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
}

.schedule-box {
  padding: 30px;
}

.schedule-box h3 {
  margin: 18px 0 3px;
  color: var(--hot-pink);
  font-size: 16px;
}

.schedule-box h3:first-child {
  margin-top: 0;
}

.center-action {
  display: flex;
  justify-content: center;
  margin: 28px auto 18px;
}

.topic-top-action {
  margin-top: 20px;
  margin-bottom: 0;
}

.topic-date {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--hot-pink);
  font-weight: 900;
}

.character {
  position: absolute;
  z-index: 1;
  width: clamp(118px, 11vw, 154px);
  pointer-events: none;
}

.character-intro {
  right: clamp(18px, 5vw, 76px);
  bottom: 26px;
  opacity: 0.9;
  filter: drop-shadow(0 12px 18px rgba(80, 42, 72, 0.16));
}

.character-contact {
  display: none;
}

.trial-announcement {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(24px, 4vw, 34px);
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 30px rgba(80, 42, 72, 0.08);
}

.trial-announcement h3 {
  margin-bottom: 8px;
}

.trial-announcement p {
  color: var(--muted);
}

.social-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
}

.social-actions .button {
  min-width: 190px;
}

.contact {
  max-width: none;
  padding-top: clamp(62px, 8vw, 96px);
  padding-bottom: clamp(62px, 8vw, 96px);
  background: linear-gradient(110deg, var(--hot-pink), #ff78c9);
  color: var(--white);
}

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

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

footer {
  padding: 34px 20px 30px;
  color: var(--muted);
  text-align: center;
  background:
    linear-gradient(180deg, #fff 0%, #fff8fd 100%);
  border-top: 1px solid var(--line);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}

.footer-brand img {
  display: block;
  width: 108px;
  height: 42px;
  object-fit: contain;
}

.footer-brand p {
  margin: 0;
  color: var(--ink);
  font-weight: 900;
}

footer small {
  display: block;
  color: var(--muted);
  font-weight: 800;
}

@media (max-width: 900px) {
  .site-header {
    align-items: center;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .trial,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    margin-top: 28px;
    min-height: 420px;
  }

  .feature-grid,
  .class-grid,
  .topic-grid,
  .instagram-embed-grid {
    grid-template-columns: 1fr;
  }

  .contact-actions {
    justify-content: flex-start;
  }

  .character-intro {
    position: static;
    display: block;
    width: 112px;
    margin: -24px auto 18px;
    opacity: 0.94;
  }
}

@media (max-width: 560px) {
  .site-header {
    gap: 10px;
    padding: 10px 14px;
  }

  .brand {
    min-width: 0;
    gap: 8px;
    flex: 1;
  }

  .brand-logo-wrap {
    width: 54px;
    height: 36px;
    padding: 4px 6px;
  }

  .brand strong {
    font-size: 12px;
    line-height: 1.2;
  }

  .brand small {
    display: block;
    max-width: 190px;
    font-size: 9px;
    line-height: 1.25;
  }

  .header-cta {
    min-height: 40px;
    padding-inline: 12px;
    font-size: 13px;
  }

  .nav {
    justify-content: flex-start;
    gap: 6px;
  }

  .nav a {
    min-height: 34px;
    padding: 7px 12px;
    font-size: 12px;
    white-space: nowrap;
  }

  h1 {
    font-size: 40px;
  }

  .hero-visual {
    min-height: 360px;
  }

  .hero-visual img {
    height: 360px;
    object-position: 60% center;
  }

  .hero-badge {
    left: 14px;
    bottom: 14px;
    font-size: 22px;
  }

  .character-intro {
    width: 96px;
    margin-top: -18px;
    margin-bottom: 14px;
  }

  .price-panel {
    grid-template-columns: 1fr;
  }

  .price-item + .price-item {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .button {
    width: 100%;
  }

  .footer-brand {
    flex-direction: column;
    gap: 6px;
  }
}