:root {
  color-scheme: light;
  font-family:
    -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP",
    sans-serif;
  color: #332b2e;
  background: #fdfcfa;
  --muted: #766b70;
  --rose: #8d4a62;
  --line: #e8e0e2;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 32px;
}
body {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--rose);
  outline-offset: 6px;
  border-radius: 4px;
}
.wrap {
  width: min(1184px, calc(100% - 96px));
  margin-inline: auto;
}
.skip-link {
  position: absolute;
  left: 24px;
  top: -80px;
  z-index: 5;
  padding: 16px;
  background: white;
}
.skip-link:focus {
  top: 16px;
}
.site-header {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  flex-shrink: 0;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 500;
}
.site-header nav a {
  white-space: nowrap;
  padding-block: 16px;
}
.site-header nav .nav-download {
  padding: 16px 24px;
  background: #f0e8eb;
  border-radius: 32px;
}
.site-header nav a:hover,
.text-link:hover,
footer a:hover {
  color: var(--rose);
}
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  min-height: 720px;
  padding-block: 40px 64px;
  gap: 32px;
}
.hero-copy {
  position: relative;
  z-index: 1;
}
.audience {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 32px;
  font-size: 14px;
  color: #725b64;
}
.audience span {
  width: 8px;
  height: 8px;
  background: #b77991;
  border-radius: 50%;
}
h1 {
  margin: 0;
  font-size: clamp(40px, 4.7vw, 64px);
  letter-spacing: -0.045em;
  line-height: 1.4;
  font-weight: 700;
}
h1 span {
  color: var(--rose);
}
.hero-description {
  font-size: 16px;
  line-height: 2;
  margin: 24px 0 32px;
  color: var(--muted);
}
.download-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.store-link {
  display: inline-block;
  border-radius: 9px;
  transition: opacity 180ms ease;
}
.store-link:hover {
  opacity: 0.75;
}
.store-link img {
  width: 160px;
  height: 54px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-height: 48px;
  font-size: 14px;
}
.account-note {
  color: var(--muted);
  font-size: 12px;
  margin: 16px 0 0;
  line-height: 1.8;
}
.hero-visual {
  position: relative;
  height: 616px;
  isolation: isolate;
}
.hero-orbit {
  position: absolute;
  width: 108%;
  aspect-ratio: 1;
  left: -4%;
  top: 9%;
  border-radius: 50%;
  background: #f3e7e9;
  z-index: -1;
}
.hero-orbit::after {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid #fffc;
  border-radius: inherit;
}
.phone {
  position: absolute;
  width: 49%;
  filter: drop-shadow(0 20px 20px #573d4222);
}
.phone-back {
  left: 48%;
  top: 16px;
  transform: rotate(9deg);
}
.phone-front {
  left: 3%;
  top: 80px;
  transform: rotate(-7deg);
}
.feature-strip {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 32px;
  border-block: 1px solid var(--line);
  color: #796a70;
  font-size: 14px;
}
.feature-strip span {
  display: flex;
  align-items: center;
  gap: 12px;
}
.feature-strip span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #be9da9;
  flex-shrink: 0;
}
.section-space {
  padding-block: 112px;
}
.section-heading {
  text-align: center;
  margin-bottom: 48px;
}
h2 {
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.5;
  letter-spacing: -0.035em;
  margin: 0;
}
.section-heading p,
.web-section p,
.closing p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
  margin: 16px 0 0;
}
.feature-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 544px;
  background: #f2eeeb;
  border-radius: 32px;
  overflow: hidden;
}
.feature-copy {
  padding: 48px;
}
.feature-number {
  display: block;
  color: #9c7887;
  font-size: 14px;
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}
h3 {
  font-size: clamp(26px, 2.8vw, 36px);
  line-height: 1.55;
  letter-spacing: -0.035em;
  margin: 0;
}
.feature-copy p {
  color: var(--muted);
  font-size: 16px;
  line-height: 2;
  max-width: 360px;
  margin: 24px 0;
}
.feature-tag {
  display: inline-block;
  font-size: 12px;
  color: #775968;
  padding: 8px 16px;
  border: 1px solid #d9cbd1;
  border-radius: 24px;
  line-height: 1.5;
}
.schedule-visual {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  position: relative;
  padding-top: 48px;
  height: 544px;
}
.schedule-visual::before {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: #e6ddd7;
  top: 80px;
}
.schedule-visual img {
  position: relative;
  width: 288px;
  transform: rotate(7deg);
  filter: drop-shadow(0 16px 18px #65514a22);
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}
.feature-card {
  overflow: hidden;
  border-radius: 32px;
}
.syllabus-card {
  background: #eaf0f1;
}
.community-card {
  background: #f4e9ee;
}
.syllabus-visual {
  height: 400px;
  padding-bottom: 32px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  -webkit-mask-image: linear-gradient(transparent, #000 40px);
  mask-image: linear-gradient(transparent, #000 40px);
}
.syllabus-visual img {
  width: 320px;
  flex: none;
  filter: drop-shadow(0 8px 20px #30464c22);
}
.community-visual {
  --bubble-offset: 40px;
  padding: 0 48px 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 352px;
  justify-content: center;
}
.subject-bubble {
  width: calc(100% - var(--bubble-offset));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 24px;
  background: #fff9;
  border: 1px solid #fff;
  border-radius: 16px;
  color: #806270;
  font-size: 16px;
}
.subject-bubble:nth-child(2) {
  align-self: flex-end;
}
.subject-bubble span {
  font-size: 24px;
  line-height: 1;
}
.community-visual img {
  margin: 8px auto 0;
  opacity: 0.5;
}
.web-section {
  border-block: 1px solid var(--line);
  padding-block: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.web-section h2 {
  font-size: 26px;
}
.web-section p {
  max-width: 620px;
}
.outline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 16px 24px;
  border: 1px solid #c6b3bb;
  border-radius: 32px;
  font-size: 14px;
  flex-shrink: 0;
}
.outline-button:hover {
  background: #f0e8eb;
}
.faq {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
}
.faq h2 {
  font-size: 32px;
}
.faq-list {
  border-top: 1px solid var(--line);
}
details {
  border-bottom: 1px solid var(--line);
}
.faq details[data-phase="opening"],
.faq details[data-phase="closing"] {
  overflow: clip;
}
summary {
  cursor: pointer;
  list-style: none;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 16px;
  line-height: 1.8;
}
summary::-webkit-details-marker {
  display: none;
}
summary span {
  position: relative;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
summary span::before,
summary span::after {
  content: "";
  background: var(--muted);
  position: absolute;
  width: 12px;
  height: 1px;
  top: 7px;
  left: 2px;
}
summary span::after {
  transform: rotate(90deg);
}
details[open]:not([data-phase="closing"]) summary span::after {
  transform: none;
}
details p {
  margin: 0;
  padding: 0 40px 24px 0;
  font-size: 16px;
  color: var(--muted);
  line-height: 2;
}
details a {
  text-decoration: underline;
  text-underline-offset: 4px;
  color: var(--rose);
}
.closing {
  text-align: center;
  background: #f3e9ed;
  padding-block: 80px;
}
.closing-brand {
  display: inline-block;
  white-space: nowrap;
}
.closing-brand img {
  display: inline-block;
  width: 2.9em;
  height: auto;
  vertical-align: -0.015em;
  margin-right: 0.06em;
}
.app-icon {
  border-radius: 20px;
  margin: 0 auto 24px;
  box-shadow: 0 8px 24px #66424b18;
}
.closing .store-link {
  margin-top: 32px;
}
footer {
  padding-block: 48px 32px;
}
.footer-top,
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.footer-top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
}
.footer-top nav a {
  padding-block: 12px;
}
.footer-bottom {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}
@media (min-width: 1440px) {
  .hero {
    min-height: 760px;
  }
}
@media (max-width: 1050px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .hero {
    gap: 16px;
    min-height: 620px;
  }
  .hero-visual {
    height: 520px;
  }
  .hero-description br {
    display: none;
  }
  .feature-copy {
    padding: 32px;
  }
  .feature-strip {
    flex-wrap: wrap;
    gap: 16px 32px;
    justify-content: center;
  }
  .community-visual {
    padding-inline: 32px;
  }
  .web-section {
    align-items: flex-start;
    flex-direction: column;
  }
  .faq {
    gap: 32px;
  }
}
@media (max-width: 760px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    min-height: 88px;
    gap: 16px;
  }
  .site-header .brand img {
    width: 88px;
  }
  .site-header nav {
    gap: 16px;
    font-size: 12px;
  }
  .site-header nav .nav-download {
    padding: 12px 16px;
  }
  .feature-link {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 40px;
    padding-bottom: 40px;
    gap: 40px;
  }
  .audience {
    justify-content: center;
    margin-bottom: 24px;
    font-size: 12px;
  }
  h1 {
    font-size: clamp(36px, 8.5vw, 56px);
  }
  .hero-description {
    margin-block: 24px;
    max-width: 360px;
    margin-inline: auto;
  }
  .hero-description br {
    display: block;
  }
  .download-actions {
    justify-content: center;
    gap: 16px;
  }
  .text-link {
    font-size: 12px;
    gap: 8px;
  }
  .account-note {
    font-size: 12px;
  }
  .hero-visual {
    width: min(440px, 100%);
    height: auto;
    aspect-ratio: 0.85;
    margin-inline: auto;
  }
  .hero-orbit {
    width: 96%;
    left: 2%;
  }
  .phone {
    width: 46%;
  }
  .phone-back {
    left: 48%;
    top: 0;
  }
  .phone-front {
    left: 6%;
    top: 40px;
  }
  .feature-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    font-size: 12px;
    padding-block: 24px;
  }
  .feature-strip span {
    gap: 8px;
  }
  .section-space {
    padding-block: 72px;
  }
  .section-heading {
    margin-bottom: 32px;
  }
  .section-heading p {
    font-size: 14px;
  }
  .feature-main,
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-main,
  .feature-card {
    border-radius: 24px;
  }
  .feature-copy {
    padding: 32px;
  }
  .feature-number {
    margin-bottom: 24px;
  }
  .feature-copy p {
    margin-block: 16px 24px;
  }
  .schedule-visual {
    height: 360px;
    padding-top: 8px;
  }
  .schedule-visual img {
    width: 240px;
  }
  .schedule-visual::before {
    top: 32px;
    width: 300px;
    height: 300px;
  }
  .syllabus-visual {
    height: 344px;
  }
  .syllabus-visual img {
    width: 280px;
  }
  .community-visual {
    --bubble-offset: 16px;
    min-height: 296px;
    padding: 0 32px 32px;
  }
  .subject-bubble {
    font-size: 14px;
    padding: 16px;
  }
  .web-section {
    padding-block: 32px;
    gap: 24px;
  }
  .web-section h2 {
    font-size: 24px;
  }
  .faq {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .faq h2 {
    font-size: 28px;
  }
  summary {
    gap: 16px;
    font-size: 14px;
  }
  details p {
    padding-right: 0;
  }
  .closing {
    padding-block: 64px;
  }
  .closing h2 {
    font-size: 26px;
  }
  .closing p {
    font-size: 14px;
  }
  .footer-top,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }
  .footer-top nav {
    gap: 0 20px;
    font-size: 12px;
  }
  .footer-bottom {
    gap: 8px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .store-link {
    transition: none;
  }
}