:root {
  --cosmic: #fff2f6;
  --cosmic-deep: #f8dfe8;
  --gold: #d8ad57;
  --gold-soft: #fff1c9;
  --teal: #a8b99f;
  --rose: #e68ca7;
  --rose-deep: #a94f6c;
  --rose-soft: #ffe8f0;
  --white: #fffaf8;
  --cream: #fff6ec;
  --ink: #4b3039;
  --red: #c85f78;
  --muted: #8e6f78;
  --line: rgba(230, 140, 167, 0.28);
  --shadow: 0 26px 80px rgba(169, 79, 108, 0.18);
  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  --sans: "Zen Maru Gothic", "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;
  --roman: "Cormorant Garamond", "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 8%, rgba(255, 225, 235, 0.9), transparent 32%),
    radial-gradient(circle at 90% 18%, rgba(255, 241, 201, 0.72), transparent 30%),
    linear-gradient(180deg, var(--white) 0%, var(--rose-soft) 42%, var(--cream) 100%);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.9;
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 64px);
  background: rgba(255, 250, 248, 0.84);
  color: var(--ink);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(230, 140, 167, 0.22);
}

.brand {
  font-family: var(--roman);
  font-size: 1.24rem;
  letter-spacing: 0.12em;
  color: var(--rose-deep);
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: clamp(14px, 2vw, 28px);
  margin-left: auto;
  font-size: 0.88rem;
  color: rgba(75, 48, 57, 0.72);
}

.nav a:hover,
.brand:hover {
  color: var(--rose);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid rgba(216, 173, 87, 0.72);
  border-radius: 6px;
  color: var(--rose-deep);
  background: rgba(255, 241, 201, 0.5);
  font-size: 0.88rem;
}

.section,
.hero,
.final-cta {
  padding: clamp(72px, 9vw, 132px) clamp(20px, 5vw, 72px);
}

.section-dark {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 18%, rgba(255, 241, 201, 0.92), transparent 29%),
    radial-gradient(circle at 18% 18%, rgba(255, 213, 226, 0.85), transparent 32%),
    linear-gradient(135deg, var(--white), var(--cosmic), var(--cosmic-deep));
  color: var(--ink);
}

.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(216, 173, 87, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 140, 167, 0.11) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), transparent 72%);
}

.section > *,
.section-dark > * {
  position: relative;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: clamp(36px, 6vw, 96px);
  min-height: calc(100vh - 72px);
}

.hero__content {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--rose-deep);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-dark .eyebrow,
.section-teal .eyebrow,
.final-cta .eyebrow {
  color: var(--rose-deep);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.32;
}

h1 {
  font-size: clamp(2.05rem, 5vw, 4.6rem);
  max-width: 880px;
  letter-spacing: 0.02em;
}

h2 {
  font-size: clamp(1.86rem, 3.4vw, 3.35rem);
  letter-spacing: 0.02em;
}

h3 {
  font-size: clamp(1.16rem, 1.5vw, 1.45rem);
}

p {
  margin: 0;
}

p + p {
  margin-top: 1em;
}

.hero__lead {
  max-width: 690px;
  margin-top: 28px;
  color: rgba(75, 48, 57, 0.84);
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
}

.hero__text {
  max-width: 660px;
  margin-top: 28px;
  color: rgba(75, 48, 57, 0.7);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

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

.button-primary {
  background: linear-gradient(135deg, #f6bfd0, #ffe9a8 48%, var(--gold));
  color: var(--ink);
  box-shadow: 0 18px 42px rgba(230, 140, 167, 0.22);
}

.button-secondary {
  border: 1px solid rgba(230, 140, 167, 0.44);
  color: var(--rose-deep);
  background: rgba(255, 250, 248, 0.58);
}

.hero__visual {
  min-height: 520px;
  display: grid;
  place-items: center;
}

.card-fan {
  position: relative;
  width: min(440px, 78vw);
  height: min(560px, 92vw);
}

.fan-card {
  position: absolute;
  width: min(218px, 39vw);
  border: 1px solid rgba(216, 173, 87, 0.5);
  border-radius: 12px;
  box-shadow:
    0 28px 78px rgba(169, 79, 108, 0.22),
    0 0 0 10px rgba(255, 250, 248, 0.26);
}

.fan-card--main {
  left: 50%;
  top: 45%;
  z-index: 4;
  transform: translate(-50%, -50%);
}

.fan-card--one {
  left: 2%;
  top: 18%;
  z-index: 1;
  transform: rotate(-16deg);
}

.fan-card--two {
  left: 22%;
  top: 4%;
  z-index: 2;
  transform: rotate(-5deg);
}

.fan-card--three {
  right: 0;
  top: 18%;
  z-index: 3;
  transform: rotate(15deg);
}

.section-heading {
  max-width: 850px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-heading--light h2 {
  color: var(--ink);
}

.intro-grid,
.about-grid,
.split-section,
.message,
.tool,
.teacher,
.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 76px);
  max-width: 1180px;
  margin: 0 auto;
}

.intro-copy,
.split-section__copy,
.about-copy,
.message-copy,
.tool-copy,
.teacher-copy {
  font-size: clamp(1rem, 1.4vw, 1.08rem);
}

.statement {
  margin-top: 28px;
  padding: 22px 24px;
  border-left: 3px solid var(--rose);
  border-radius: 0 18px 18px 0;
  background: linear-gradient(135deg, rgba(255, 232, 240, 0.86), rgba(255, 241, 201, 0.5));
  font-weight: 700;
  line-height: 1.75;
}

.statement--dark {
  background: rgba(255, 250, 248, 0.52);
  color: var(--ink);
}

.check-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(230, 140, 167, 0.24);
}

.check-list li {
  position: relative;
  padding: 18px 0 18px 32px;
  border-bottom: 1px solid rgba(230, 140, 167, 0.24);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 27px;
  width: 12px;
  height: 12px;
  background: linear-gradient(135deg, var(--rose), var(--gold));
  transform: rotate(45deg);
}

.split-section {
  background:
    radial-gradient(circle at 90% 20%, rgba(255, 241, 201, 0.66), transparent 30%),
    linear-gradient(135deg, rgba(255, 250, 248, 0.88), rgba(255, 232, 240, 0.94)),
    var(--rose-soft);
  max-width: none;
}

.single-card-frame {
  justify-self: center;
  padding: 14px;
  border: 1px solid rgba(216, 173, 87, 0.46);
  border-radius: 20px;
  background: rgba(255, 250, 248, 0.82);
  box-shadow: var(--shadow);
}

.single-card-frame img {
  width: min(220px, 58vw);
  border-radius: 12px;
}

.keyword-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.keyword-grid div {
  min-height: 108px;
  padding: 22px;
  border: 1px solid rgba(230, 140, 167, 0.22);
  border-radius: 18px;
  background: rgba(255, 250, 248, 0.5);
}

.keyword-grid div:last-child {
  grid-column: 1 / -1;
}

.keyword-grid span {
  display: block;
  color: var(--rose-deep);
  font-family: var(--roman);
  font-size: 1.42rem;
  line-height: 1.2;
  letter-spacing: 0.08em;
}

.keyword-grid p {
  margin-top: 8px;
  color: rgba(75, 48, 57, 0.7);
}

.card-strip {
  display: flex;
  gap: 18px;
  max-width: 1180px;
  margin: 64px auto 0;
  overflow-x: auto;
  padding: 0 0 18px;
}

.card-strip img {
  width: 150px;
  flex: 0 0 auto;
  border: 1px solid rgba(216, 173, 87, 0.36);
  border-radius: 12px;
}

.message-visual {
  position: relative;
  min-height: 430px;
  display: grid;
  place-items: center;
}

.message-card {
  position: absolute;
  width: min(196px, 44vw);
  border: 1px solid rgba(216, 173, 87, 0.42);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.message-card--back {
  transform: translate(-28%, -8%) rotate(-11deg);
  opacity: 0.78;
}

.message-card--front {
  transform: translate(22%, 10%) rotate(7deg);
}

blockquote {
  margin: 32px 0 0;
  padding: 24px 0 24px 26px;
  border-left: 3px solid var(--rose);
  font-family: var(--serif);
  font-size: clamp(1.28rem, 2vw, 1.72rem);
  line-height: 1.65;
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
}

.stage-item,
.voice-item,
.course-item {
  background:
    linear-gradient(180deg, rgba(255, 250, 248, 0.98), rgba(255, 242, 246, 0.96));
  border: 1px solid rgba(230, 140, 167, 0.18);
  border-radius: 22px;
  box-shadow: 0 22px 70px rgba(169, 79, 108, 0.1);
}

.stage-item {
  padding: 24px;
}

.stage-item img {
  width: 138px;
  margin: 0 auto 22px;
  border: 1px solid rgba(216, 173, 87, 0.42);
  border-radius: 12px;
}

.stage-number {
  margin-bottom: 6px;
  color: var(--rose-deep);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.stage-item h3 {
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(230, 140, 167, 0.24);
}

.stage-item p:last-child {
  margin-top: 18px;
  color: var(--muted);
}

.section-teal {
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 241, 201, 0.76), transparent 30%),
    linear-gradient(135deg, #ffdce8, #fff6ec 55%, #edf3e8);
  color: var(--ink);
}

.tool {
  max-width: none;
}

.tool-cards,
.teacher-cards {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.tool-cards img,
.teacher-cards img {
  width: min(150px, 28vw);
  border: 1px solid rgba(216, 173, 87, 0.42);
  border-radius: 12px;
  box-shadow: 0 24px 64px rgba(169, 79, 108, 0.18);
}

.tool-cards img:nth-child(2),
.teacher-cards img:nth-child(2) {
  transform: translateY(-28px);
}

.daily {
  background:
    radial-gradient(circle at 85% 5%, rgba(255, 241, 201, 0.62), transparent 24%),
    linear-gradient(180deg, var(--white), var(--rose-soft));
}

.daily-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.daily-step {
  padding: 26px;
  border-top: 3px solid var(--rose);
  background: var(--white);
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(169, 79, 108, 0.1);
}

.daily-step span {
  color: var(--rose);
  font-family: var(--roman);
  font-size: 2rem;
  line-height: 1;
  letter-spacing: 0.06em;
}

.daily-step h3 {
  margin-top: 16px;
}

.daily-step p {
  margin-top: 10px;
  color: var(--muted);
}

.voices {
  background:
    linear-gradient(180deg, var(--rose-soft), var(--cream));
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  max-width: 1180px;
  margin: 0 auto;
}

.voice-item {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
}

.voice-item img {
  width: 86px;
  border-radius: 12px;
  border: 1px solid rgba(216, 173, 87, 0.36);
  grid-row: span 3;
}

.voice-item h3 {
  font-size: 1.12rem;
}

.voice-name {
  margin-top: 4px;
  color: var(--rose-deep);
  font-weight: 700;
}

.voice-item p:last-child {
  color: var(--muted);
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
}

.course-item {
  padding: clamp(28px, 4vw, 44px);
}

.course-item--teacher {
  border-color: rgba(216, 173, 87, 0.54);
  background:
    linear-gradient(180deg, rgba(255, 250, 248, 0.98), rgba(255, 232, 240, 0.98));
  box-shadow: 0 28px 88px rgba(230, 140, 167, 0.2);
}

.course-label {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 6px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 232, 240, 0.98), rgba(255, 241, 201, 0.9));
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 700;
}

.course-item p:not(.course-label) {
  margin-top: 18px;
  color: var(--muted);
}

.course-item ul {
  display: grid;
  gap: 8px;
  margin: 24px 0 0;
  padding-left: 20px;
}

.price {
  margin: 30px 0 24px;
  padding: 22px;
  border: 1px solid rgba(216, 173, 87, 0.36);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 232, 240, 0.78), rgba(255, 241, 201, 0.52));
}

.price span,
.price small {
  display: block;
}

.price span {
  color: var(--red);
  font-weight: 700;
}

.price strong {
  display: block;
  margin-top: 4px;
  font-family: var(--roman);
  font-size: clamp(2.1rem, 4vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.price small {
  margin-top: 8px;
  color: var(--muted);
}

.teacher-cards img {
  width: min(166px, 30vw);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  border-top: 1px solid rgba(230, 140, 167, 0.22);
}

details {
  border-bottom: 1px solid rgba(230, 140, 167, 0.22);
}

summary {
  cursor: pointer;
  padding: 22px 0;
  font-weight: 700;
}

details p {
  padding: 0 0 24px;
  color: var(--muted);
}

.final-cta {
  grid-template-columns: 170px minmax(0, 720px);
  justify-content: center;
  min-height: 430px;
}

.final-cta img {
  width: 150px;
  border: 1px solid rgba(216, 173, 87, 0.42);
  border-radius: 12px;
  box-shadow: 0 24px 72px rgba(169, 79, 108, 0.22);
}

.final-cta p {
  color: rgba(75, 48, 57, 0.76);
}

.final-cta .button {
  margin-top: 30px;
}

@media (max-width: 980px) {
  .site-header {
    gap: 16px;
  }

  .nav {
    display: none;
  }

  .hero,
  .intro-grid,
  .about-grid,
  .split-section,
  .message,
  .tool,
  .teacher,
  .final-cta,
  .course-grid,
  .voice-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 48px;
  }

  .hero__visual {
    order: -1;
    min-height: 420px;
  }

  .card-fan {
    height: 430px;
  }

  .stage-grid,
  .daily-grid {
    grid-template-columns: 1fr;
  }

  .tool-cards,
  .teacher-cards {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 18px;
  }

  .tool-cards img,
  .teacher-cards img,
  .tool-cards img:nth-child(2),
  .teacher-cards img:nth-child(2) {
    flex: 0 0 auto;
    transform: none;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 64px;
    padding: 12px 16px;
  }

  .brand {
    font-size: 0.94rem;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0 12px;
  }

  .section,
  .hero,
  .final-cta {
    padding: 58px 18px;
  }

  .hero {
    min-height: auto;
  }

  .hero__visual {
    min-height: 330px;
  }

  .card-fan {
    height: 330px;
  }

  .fan-card {
    width: min(150px, 38vw);
  }

  .button {
    width: 100%;
  }

  .keyword-grid {
    grid-template-columns: 1fr;
  }

  .keyword-grid div:last-child {
    grid-column: auto;
  }

  .message-visual {
    min-height: 320px;
  }

  .voice-item {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .voice-item img {
    width: 64px;
  }

  .final-cta img {
    width: 118px;
  }
}