body {
  margin: 0;
  font-family: var(--font-sans);
  color: #333;
  background: #ffffff;
}

.isum-page h2 {
  font-size: 28px !important;
}

.isum-page h3 {
  font-size: 22px !important;
}

/* bgmページと同仕様ヘッダー */
.movie-detail-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid #ececec;
}

.movie-detail-header__inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-sizing: border-box;
}

.movie-detail-header__logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.movie-detail-header__logo {
  width: clamp(58px, calc(100vw * 186 / 1440), 186px);
  max-width: 100%;
  height: auto;
  display: block;
}

.movie-detail-header__edit-link {
  margin-left: auto;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: 44px;
  padding: 0 26px;
  border: 2px solid #222222;
  border-radius: 9999px;
  color: #222222;
  background: #ffffff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.movie-detail-header__edit-link:hover {
  background: #f7f7f7;
}

.isum-main {
  padding-bottom: 80px;
}

.isum-container {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.isum-hero {
  background: linear-gradient(180deg, #d9f2f5 0%, #f0fbfc 100%);
  border-bottom: 1px solid #e0f7f9;
  text-align: center;
  padding: 56px 20px 52px;
}

.isum-hero__label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #00afbf;
  background: #ffffff;
  border: 1px solid #b4ebf0;
  border-radius: 9999px;
  padding: 7px 16px;
  margin-bottom: 18px;
}

.isum-hero__title {
  margin: 0;
  font-size: 38px;
  line-height: 1.3;
  color: #1b1b1b;
  letter-spacing: 0.04em;
}

.isum-hero__description {
  max-width: 720px;
  margin: 18px auto 0;
  font-size: 16px;
  line-height: 1.9;
  color: #333;
}

.isum-overview {
  padding-top: 52px;
}

.isum-card {
  background: #fff;
  border: 1px solid #e9eff1;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(20, 59, 67, 0.06);
  padding: 28px 24px;
}

.isum-card__title {
  margin: 0 0 14px;
  font-size: 24px;
  color: #242424;
}

.isum-card__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
}

.isum-card__price-note {
  margin: 10px 0 0;
  font-size: 16px;
  color: #00a8b8;
}

.isum-card__note {
  margin: 12px 0 0;
  font-size: 14px;
  color: #4b4b4b;
}

.isum-highlight-box {
  margin-top: 18px;
  background: #f8fcfd;
  border: 1px solid #dceef1;
  border-radius: 12px;
  padding: 16px;
}

.isum-card__subheading {
  margin: 0 0 10px;
  font-size: 18px !important;
  color: #1f1f1f;
}

.isum-highlight-box strong {
  color: #00a8b8;
}

.isum-flow {
  padding-top: 56px;
}

.isum-flow__title {
  margin: 0 0 24px;
  text-align: center;
}

.isum-flow__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.isum-flow-step {
  background: #fff;
  border: 1px solid #e8ebed;
  border-radius: 14px;
  padding: 20px;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  align-items: start;
}

.isum-step-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #f0fbfc;
  border: 2px solid #00afbf;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #00afbf;
  font-weight: 700;
}

.isum-step-badge span:first-child {
  font-size: 10px;
  line-height: 1;
}

.isum-step-badge span:last-child {
  font-size: 18px;
  line-height: 1;
  margin-top: 3px;
}

.isum-flow-step__title {
  margin: 2px 0 10px;
  font-size: 19px;
}

.isum-flow-step__image {
  width: 100%;
  max-width: 340px;
  border-radius: 10px;
  border: 1px solid #e4e8ea;
  box-shadow: 0 4px 14px rgba(20, 59, 67, 0.08);
  display: block;
  margin: 12px 0 0;
}

.isum-flow-step__body {
  margin: 0;
  line-height: 1.8;
  font-size: 15px;
}

.isum-flow-step__body ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.isum-flow-step__body li {
  margin: 4px 0;
}

.isum-database {
  padding-top: 56px;
}

.isum-database__title {
  margin: 0 0 18px;
  text-align: center;
}

.isum-database__card {
  background: #f7f8f9;
  border: 1px solid #e4e7e8;
  border-radius: 16px;
  padding: 24px;
}

.isum-database__steps {
  margin: 0;
  padding-left: 22px;
  line-height: 1.9;
  font-size: 15px;
}

.isum-database__steps li + li {
  margin-top: 6px;
}

.isum-database__step-image {
  width: 100%;
  max-width: 340px;
  border-radius: 10px;
  border: 1px solid #e4e8ea;
  box-shadow: 0 4px 14px rgba(20, 59, 67, 0.08);
  display: block;
  margin: 10px 0 4px;
}

.isum-database__helper {
  margin: 16px 0 0;
  font-size: 13px;
  color: #4f5658;
}

.isum-database__action {
  margin-top: 18px;
  text-align: center;
}

.isum-database__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 9999px;
  border: 2px solid #00afbf;
  color: #039aa5;
  background: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
}

.isum-database__link:hover {
  background: #f0fbfc;
}

@media (max-width: 768px) {
  .movie-detail-header__inner {
    padding: 10px 16px;
    gap: 10px 12px;
  }

  .movie-detail-header__logo {
    width: 148px;
    max-width: none;
  }

  .movie-detail-header__edit-link {
    margin-left: auto;
    min-height: 40px;
    padding: 0 16px;
    font-size: 13px;
  }

  .isum-main {
    padding-bottom: 64px;
  }

  .isum-hero {
    padding: 44px 14px 40px;
  }

  .isum-hero__title {
    font-size: 30px;
  }

  .isum-hero__description {
    font-size: 14px;
    line-height: 1.8;
  }

  .isum-container {
    padding: 0 16px;
  }

  .isum-card {
    padding: 22px 16px;
  }

  .isum-card__title {
    font-size: 21px;
  }

  .isum-flow-step {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .isum-step-badge {
    width: 56px;
    height: 56px;
  }

  .isum-flow-step__title {
    margin-top: 0;
    font-size: 18px;
  }

  .isum-flow-step__body {
    font-size: 14px;
  }

  .isum-database__card {
    padding: 18px 16px;
  }

  .isum-database__steps {
    font-size: 14px;
    padding-left: 18px;
  }

  .isum-database__link {
    width: 100%;
    box-sizing: border-box;
  }
}