.teens-title-header {
  position: relative;
  height: 281px;
  padding-top: var(--header-height);
  background-image:
    linear-gradient(90deg, rgba(1, 48, 197, 0.82) 0%, rgba(1, 32, 129, 0.82) 100%),
    url("../images/teens-adult/title-header.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-white);
}

.teens-title-header__inner {
  height: 100%;
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: var(--container-gutter);
  display: flex;
  align-items: center;
  justify-content: center;
}

.teens-hero {
  position: relative;
  padding: 72px 0 72px;
  background: var(--color-white);
}

.teens-hero__inner {
  position: relative;
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.teens-hero__title {
  margin: 0;
  text-align: center;
  font-size: 40px;
  font-weight: 700;
}

.teens-hero__lead-heading {
  margin: 0 0 48px;
  text-align: center;
  font-size: clamp(1.9rem, 3.2vw, 2.5rem);
  font-weight: 700;
  color: #012081;
}

.teens-hero__targets {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  margin: 0 auto 40px;
  max-width: 940px;
}

.teens-hero__targets li {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 202px;
  aspect-ratio: 1 / 1;
  margin-inline: auto;
  border-radius: 50%;
  background: #012081;
  color: var(--color-white);
  text-align: center;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.45;
  padding: 10px;
}

.teens-hero__description {
  position: relative;
  margin: 0 auto;
  max-width: 720px;
  text-align: center;
  font-size: 1.25rem;
  line-height: 2;
  color: var(--color-navy-dark);
  background: rgba(255, 255, 255, 0.88);
  padding: 24px;
}

.teens-hero__description-accent {
  color: var(--color-accent);
  font-weight: 700;
}

.teens-hero__person {
  position: absolute;
  width: 108px;
  height: auto;
}

.teens-hero__person--left {
  left: -108px;
  top: 52px;
}

.teens-hero__person--right {
  right: -104px;
  bottom: -36px;
}

.teens-gradient-area {
  background: linear-gradient(180deg, #ffffff 0%, #e9eef7 100%);
}

.teens-cases {
  padding: 0px 0 56px;
  background: transparent;
}

.teens-cases__inner {
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: var(--container-gutter);
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.teens-case {
  display: grid;
  grid-template-columns: 1fr 365px;
  border: 1px solid var(--color-accent);
  background: var(--color-white);
  width: 100%;
  max-width: 752px;
  margin-inline: auto;
}

.teens-case__content {
  padding: 24px 24px 24px 0;
}

.teens-case__title {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 53px;
  padding: 0 44px;
  margin: 0 0 20px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: 0.28em;
}

.teens-case__title--long {
  width: 311px;
  letter-spacing: 0.04em;
  font-size: 1.375rem;
}

.teens-case__title--sticky {
  position: relative;
  overflow: hidden;
  width: 234px;
  justify-content: flex-start;
  padding: 0 0 0 72px;
  background: #cc2742;
  box-shadow: 0 4px 8px rgba(27, 43, 84, 0.18);
}

.teens-case__text {
  margin: 0;
  padding-left: 24px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-navy-dark);
}

.teens-case--junior {
  height: 285px;
}

.teens-case__title--junior {
  margin-bottom: 24px;
}

.teens-case--junior .teens-case__text {
  line-height: 1.6;
}

.teens-case__title--sticky::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 54px;
  height: 100%;
  background: #bd1f3b;
}

.teens-case__title--sticky::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 45%);
  pointer-events: none;
}

.teens-case__title--adult {
  width: 311px;
  background: #5a3f30;
  white-space: nowrap;
}

.teens-case__title--adult::before {
  width: 55px;
  background: #4a2f22;
}

.teens-case--junior .teens-case__media {
  height: 283px;
}

.teens-case__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.teens-pricing {
  padding: 32px 0 84px;
  background: transparent;
}

.teens-pricing__inner {
  max-width: 1044px;
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.teens-pricing__table {
  width: min(100%, 996px);
  margin-inline: auto;
  border-collapse: separate;
  border-spacing: 8px 5px;
  table-layout: fixed;
  margin-top: -5px;
  margin-bottom: -5px;
}

.teens-pricing__col--class { width: 450px; }
.teens-pricing__col--time { width: 240px; }
.teens-pricing__col--price { width: 290px; }

.teens-pricing__table th,
.teens-pricing__table td {
  height: 90px;
  text-align: center;
  font-size: 28px;
  line-height: 1;
  padding: 0;
}

.teens-pricing__table thead th {
  background: #012081;
  color: var(--color-white);
  font-weight: 700;
}

.teens-pricing__table tbody th,
.teens-pricing__table tbody td {
  background: #ffffff;
  color: #1b2b54;
}

.teens-pricing__table tbody th {
  font-weight: 700;
}

.teens-pricing__table tbody td {
  font-weight: 400;
}

.teens-achievement {
  padding: 0 0 82px;
  background: transparent;
}

.teens-achievement__inner {
  max-width: 1044px;
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.teens-achievement__heading {
  width: 100%;
  margin: 0 auto;
}

.teens-achievement__title {
  margin: 0;
  text-align: center;
  color: #012081;
  font-size: 31px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
  white-space: nowrap;
}

.teens-achievement__title-highlight-image {
  display: inline-block;
  vertical-align: -0.2em;
  margin-bottom: -12px
}

.teens-achievement__title-highlight-text {
  display: none;
}

.teens-achievement__title-base {
  display: inline;
}

.teens-achievement__results {
  margin: 18px auto 30px;
  max-width: 776px;
  text-align: center;
}

.teens-achievement__line {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 24px;
  white-space: nowrap;
}

.teens-achievement__line + .teens-achievement__line {
  margin-top: 8px;
}

.teens-achievement__label {
  color: var(--color-navy-dark);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.teens-achievement__value {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.08em;
}

.teens-achievement__values {
  display: inline-flex;
  align-items: baseline;
  gap: 24px;
}

.teens-achievement__coaching {
  margin-inline: auto;
  padding: 20px;
  background: #ffffff;
  display: flex;
  align-items: flex-end;
  gap: 9px;
}

.teens-achievement__coaching-icon {
  width: 112px;
  height: auto;
  flex-shrink: 0;
}

.teens-achievement__coaching p {
  margin: 0;
  text-align: left;
  font-size: 24px;
  line-height: 1.8;
  color: var(--color-navy-dark);
  font-weight: 700;
  letter-spacing: 0;
}

@media (max-width: 1100px) {
  .teens-hero__targets {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 600px;
  }

  .teens-case {
    grid-template-columns: 1fr;
  }

  .teens-case__media {
    height: 280px;
  }

  .teens-hero__person {
    display: none;
  }

  .teens-pricing__table th,
  .teens-pricing__table td {
    font-size: 1.25rem;
  }

  .teens-achievement__title {
    font-size: 26px;
    white-space: normal;
  }

  .teens-achievement__title-highlight-image {
    height: 1.18em;
    vertical-align: -0.16em;
  }

  .teens-achievement__line {
    flex-wrap: wrap;
    gap: 8px 16px;
    white-space: normal;
  }

  .teens-achievement__label {
    font-size: 26px;
  }

  .teens-achievement__value {
    font-size: 40px;
  }

  .teens-achievement__coaching p {
    font-size: 1.125rem;
  }

  .teens-achievement__coaching-icon {
    width: 88px;
  }
}

@media (min-width: 768px) and (max-width: 1210px) {
  .teens-title-header {
    height: 240px;
  }

  .teens-title-header__inner,
  .teens-hero__inner,
  .teens-cases__inner,
  .teens-pricing__inner,
  .teens-achievement__inner {
    max-width: var(--container-max);
  }

  .teens-hero {
    padding: 56px 0 64px;
  }

  .teens-hero__title {
    font-size: 34px;
    line-height: 1.35;
  }

  .teens-hero__lead-heading {
    margin-bottom: 40px;
    font-size: 32px;
    line-height: 1.45;
  }

  .teens-hero__targets {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    max-width: 560px;
  }

  .teens-hero__targets li {
    width: clamp(174px, 22vw, 202px);
    font-size: 20px;
  }

  .teens-hero__description {
    max-width: 680px;
    font-size: 18px;
    line-height: 1.9;
  }

  .teens-hero__person {
    display: block;
    width: clamp(64px, 8vw, 88px);
  }

  .teens-hero__person--left {
    left: clamp(-80px, -7vw, -44px);
    top: 44px;
    bottom: auto;
  }

  .teens-hero__person--right {
    right: clamp(-64px, -6vw, -36px);
    top: auto;
    bottom: -28px;
  }

  .teens-cases {
    padding: 24px 0 56px;
  }

  .teens-cases__inner {
    gap: 32px;
  }

  .teens-case,
  .teens-case--junior {
    grid-template-columns: 1fr;
    max-width: 720px;
    height: auto;
  }

  .teens-case__media,
  .teens-case--junior .teens-case__media {
    order: -1;
    width: 100%;
    height: clamp(280px, 36vw, 340px);
  }

  .teens-case__content {
    padding: 24px 0 30px;
  }

  .teens-case__title,
  .teens-case__title--sticky {
    margin-bottom: 20px;
  }

  .teens-case__text,
  .teens-case--junior .teens-case__text {
    padding: 0 32px;
    font-size: 16px;
    line-height: 1.7;
  }

  .teens-pricing {
    padding: 24px 0 64px;
  }

  .teens-pricing__table {
    width: min(100%, 760px);
    border-spacing: 5px 4px;
  }

  .teens-pricing__col--class { width: 45%; }
  .teens-pricing__col--time { width: 24%; }
  .teens-pricing__col--price { width: 31%; }

  .teens-pricing__table th,
  .teens-pricing__table td {
    height: 72px;
    padding: 0 8px;
    font-size: 20px;
    line-height: 1.35;
  }

  .teens-achievement {
    padding: 0 0 72px;
  }

  .teens-achievement__title {
    font-size: 26px;
    white-space: normal;
  }

  .teens-achievement__title-highlight-image {
    height: 3em;
    vertical-align: -0.16em;
  }

  .teens-achievement__line {
    flex-wrap: wrap;
    gap: 8px 16px;
    white-space: normal;
  }

  .teens-achievement__label {
    font-size: 24px;
  }

  .teens-achievement__value {
    font-size: 34px;
  }

  .teens-achievement__coaching {
    max-width: 760px;
    align-items: center;
  }

  .teens-achievement__coaching p {
    font-size: 18px;
    line-height: 1.7;
  }
}

@media (max-width: 767px) {
  .teens-title-header {
    height: 192px;
    padding-top: var(--header-height);
    background-position: center top;
  }

  .teens-title-header__inner {
    align-items: flex-start;
    padding-top: 45px;
  }

  .teens-hero {
    padding: 31px 0 0;
  }

  .teens-hero__inner {
    padding-inline: 18px;
  }

  .teens-hero__title {
    font-size: 22px;
    line-height: 1.45;
    white-space: nowrap;
  }

  .teens-hero__lead-heading {
    margin-bottom: 33px;
    color: #012081;
    font-size: 22px;
    line-height: 1.45;
  }

  .teens-hero__targets {
    grid-template-columns: repeat(2, 151px);
    justify-content: center;
    gap: 26px;
    max-width: 329px;
    margin-bottom: 40px;
  }

  .teens-hero__targets li {
    width: 151px;
    font-size: 16px;
    line-height: 1.45;
  }

  .teens-hero__description {
    width: min(100%, 297px);
    max-width: 297px;
    font-size: 1rem;
    line-height: 2.125;
    padding: 0;
    background: transparent;
  }

  .teens-hero__person {
    display: block;
  }

  .teens-hero__person--left {
    left: -29px;
    top: -4px;
    bottom: auto;
    width: 39px;
  }

  .teens-hero__person--right {
    right: -24px;
    top: auto;
    bottom: -52px;
    width: 59px;
  }

  .teens-gradient-area {
    background: linear-gradient(180deg, #ffffff 0%, #e9eef7 100%);
  }

  .teens-cases {
    padding: 150px 0 56px;
  }

  .teens-cases__inner {
    gap: 24px;
    padding-inline: 18px;
  }

  .teens-case,
  .teens-case--junior {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
    max-width: 340px;
    height: auto;
    min-height: 530px;
    border-width: 1px;
  }

  .teens-case:nth-child(3) {
    min-height: 550px;
  }

  .teens-case__media,
  .teens-case--junior .teens-case__media {
    order: -1;
    width: 100%;
    height: 257px;
  }

  .teens-case__content {
    display: contents;
  }

  .teens-case__title,
  .teens-case__title--sticky {
    width: 212px;
    height: 48px;
    margin: 0;
    padding: 0 0 0 64px;
    justify-content: flex-start;
    letter-spacing: 0.28em;
    font-size: 23.6px;
    line-height: 1.43;
  }

  .teens-case__title--sticky::before {
    width: 50px;
  }

  .teens-case__title--long {
    width: 306px;
    padding-left: 64px;
    font-size: 22px;
    letter-spacing: 0;
  }

  .teens-case__text,
  .teens-case--junior .teens-case__text {
    width: 300px;
    margin-inline: auto;
    padding-left: 0;
    font-size: 16px;
    line-height: 1.6;
  }

  .teens-pricing {
    padding: 8px 0 43px;
  }

  .teens-pricing__inner {
    padding-inline: 14px;
  }

  .teens-pricing__table {
    width: min(100%, 348px);
    /* 横3px、縦1px（thead / tbody 間の隙間） */
    border-spacing: 3px 2px;
    margin-top: 0px;
    margin-bottom: 0px;
  }

  .teens-pricing__col--class { width: 194px; }
  .teens-pricing__col--time { width: 50px; }
  .teens-pricing__col--price { width: 98px; }

  .teens-pricing__table th,
  .teens-pricing__table td {
    height: 45px;
    padding: 0;
    font-size: 16px;
    line-height: 1.25;
    white-space: nowrap;
  }

  .teens-pricing__table thead th {
    font-size: 16px;
  }

  .teens-pricing__table thead th:first-child {
    font-size: 17px;
  }

  .teens-achievement {
    padding: 0 0 100px;
  }

  .teens-achievement__inner {
    padding-inline: 18px;
  }

  .teens-achievement__heading {
    padding-top: 54px;
  }

  .teens-achievement__title {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-end;
    row-gap: 2px;
    font-size: 20px;
    line-height: 1.4;
    white-space: normal;
  }

  .teens-achievement__title::before {
    content: "";
    position: absolute;
    left: 50%;
    top: -54px;
    width: 104px;
    height: 50px;
    background: url("../images/teens-adult/feature-decoration.png") center / contain no-repeat;
    transform: translateX(-50%);
  }

  .teens-achievement__title-base:first-child {
    flex-basis: 100%;
    font-size: 19px;
    letter-spacing: -0.02em;
    white-space: nowrap;
  }

  .teens-achievement__title-base:last-child {
    display: inline;
  }

  .teens-achievement__title-highlight-image {
    display: none;
  }

  .teens-achievement__title-highlight-text {
    display: inline;
    margin-right: 5px;
    color: var(--color-accent);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
  }

  .teens-achievement__results {
    margin: 28px auto 31px;
  }

  .teens-achievement__line {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    white-space: normal;
  }

  .teens-achievement__line + .teens-achievement__line {
    margin-top: 14px;
  }

  .teens-achievement__label {
    font-size: 14px;
    line-height: 1;
    letter-spacing: 0.08em;
  }

  .teens-achievement__values {
    gap: 10px;
  }

  .teens-achievement__value {
    font-size: 24px;
    line-height: 1;
    letter-spacing: 0.08em;
  }

  .teens-achievement__coaching {
    width: min(100%, 344px);
    align-items: flex-start;
    gap: 9px;
    padding: 16px 8px;
  }

  .teens-achievement__coaching-icon {
    width: 66px;
  }

  .teens-achievement__coaching p {
    width: 253px;
    font-size: 16px;
    line-height: 1.625;
  }
}