/* ========================================
新規追加セクション完全版CSS - additional-sections.css
Case Studies, OEM Flow, Voice の全セクション + 完全レスポンシブ対応
======================================== */
/* 1番目と5番目を同じスタイルに */
.faq__title--01,
.faq__title--05 {
  background: -webkit-gradient(linear, right top, left top, from(#9fc2cb), to(#56b2cc));
  background: linear-gradient(to left, #9fc2cb 0%, #56b2cc 100%);
}

/* 2番目と6番目を同じスタイルに */
.faq__title--02,
.faq__title--06 {
  background: -webkit-gradient(linear, right top, left top, from(#e6aed1), to(#de75b7));
  background: linear-gradient(to left, #e6aed1 0%, #de75b7 100%);
}
/* ----------------------------------------
case-studies セクション（数字ボックス外、アイコンと文章横並び）
---------------------------------------- */

.case-studies {
  background-color: #f8f9fa;
  padding: 100px 20px;
  position: relative;
}

.case-studies__inner {
  margin: 0 auto;
  max-width: 1156px;
  padding: 0 20px;
}

.case-studies__heading {
  color: rgba(51, 51, 51, 0.1);
  font-family: futura-pt, sans-serif;
  font-size: 18rem;
  font-weight: 500;
  letter-spacing: calc(30 / 1000 * 1em);
  line-height: calc(140 / 210);
  margin-bottom: 20px;
}

.case-studies__sub-heading {
  border-bottom: 3px solid #333;
  color: #333;
  font-size: 3rem;
  letter-spacing: calc(100 / 1000 * 1em);
  margin-bottom: 150px;
  margin-left: auto;
  padding-bottom: 5px;
  position: relative;
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
}

.case-studies__contents {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  gap: 64px;
}

.case-studies__item {
  position: relative;
  margin-left: 80px;
}

.case-studies__num {
  color: #ccc;
  font-family: futura-pt, sans-serif;
  font-size: 10rem;
  font-weight: 500;
  left: -40px;
  line-height: 1;
  position: absolute;
  top: -40px;
  z-index: 1;
}

.case-studies__box {
  background: #fff;
  border-radius: 20px;
  padding: 32px;
  -webkit-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

.case-studies__icon {
  margin-right: 40px;
  text-align: center;
  width: 20%;
  -ms-flex-negative: 0;
  flex-shrink: 0;
}

.case-studies__icon img {
  width: 100%;
}

.case-studies__body {
  width: 80%;
}

.case-studies__title {
  color: #222;
  font-size: 2.4rem;
  letter-spacing: calc(100 / 1000 * 1em);
  line-height: calc(49 / 28);
  margin-bottom: 16px;
}

.case-studies__desc {
  color: #222;
  font-size: 1.4rem;
  letter-spacing: calc(100 / 1000 * 1em);
  line-height: calc(32 / 14);
}

.case-studies__desc span {
  font-weight: bold;
}

/* ----------------------------------------
oem-flow-section セクション（白背景カード、上はみ出しナンバー）
---------------------------------------- */

.oem-flow-section {
  background-image: url(../img/feature_top-bg.webp);
  background-position: center top;
  background-repeat: no-repeat;
  background-size: 100%;
  padding-bottom: 90px;
  position: relative;
  z-index: 1;
}

.oem-flow-section__overlay {
  background-image: url(../img/feature_bg.webp);
  background-position: center top;
  background-size: cover;
  bottom: 0;
  left: 0;
  mix-blend-mode: multiply;
  position: absolute;
  right: 0;
  top: 0;
  z-index: -1;
}

.oem-flow-section__inner {
  margin: 0 auto;
  max-width: 1200px;
  padding: 20px;
}

.oem-flow-section__heading {
  -webkit-transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.2);
  font-family: futura-pt, sans-serif;
  font-size: 28rem;
  font-weight: 500;
  left: 50%;
  letter-spacing: calc(30 / 1000 * 1em);
  line-height: 1;
  position: absolute;
  top: -60px;
  transform: translateX(-50%);
  z-index: -1;
}

.oem-flow-section__sub-heading {
  color: #fff;
  font-size: 3rem;
  letter-spacing: calc(100 / 1000 * 1em);
  margin-bottom: 150px;
  margin-left: auto;
  padding-bottom: 5px;
  position: relative;
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
}

.oem-flow-section__sub-heading::after {
  -webkit-transform: translateX(-50%);
  background-color: #fff;
  bottom: -5px;
  content: "";
  display: block;
  height: 3px;
  left: 50%;
  position: absolute;
  transform: translateX(-50%);
  width: 100%;
}

.oem-flow-section__list {
  -webkit-box-align: start;
  -ms-flex-align: start;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  align-items: flex-start;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 40px;
  justify-content: center;
}

.oem-flow-section__item {
  position: relative;
  width: 30%;
}

.oem-flow-section__card {
  background: #fff;
  border-radius: 20px;
  padding: 60px 24px 40px;
  position: relative;
  text-align: center;
  -webkit-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.oem-flow-section__num {
  background-color: #333;
  border-radius: 50%;
  color: #fff;
  font-family: futura-pt, sans-serif;
  font-size: 2.4rem;
  font-weight: 500;
  height: 60px;
  left: 50%;
  line-height: 60px;
  position: absolute;
  top: -30px;
  transform: translateX(-50%);
  width: 60px;
}

.oem-flow-section__img {
  margin: 0 auto 20px;
  width: 160px;
}

.oem-flow-section__img--sp {
  display: none;
}

.oem-flow-section__title {
  color: #222;
  font-size: 2rem;
  letter-spacing: calc(100 / 1000 * 1em);
  line-height: calc(30 / 20);
  margin-bottom: 20px;
}

.oem-flow-section__desc {
  color: #222;
  font-size: 1.4rem;
  letter-spacing: calc(100 / 1000 * 1em);
  line-height: calc(28 / 14);
  text-align: left;
}

.oem-flow-section__desc span {
  font-weight: bold;
}

.oem-flow-section__arrow {
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 100%;
  justify-content: center;
  position: absolute;
  right: -40px;
  top: 0;
  width: 80px;
}

.oem-flow-section__arrow img {
  width: 30px;
}

.oem-flow-section__item:last-child .oem-flow-section__arrow {
  display: none;
}

/* ----------------------------------------
voice セクション（ピンク追加虹色グラデーション丸付きタイトル）
---------------------------------------- */

.voice {
  background-color: #f8f9fa;
  padding: 100px 20px;
  position: relative;
}

.voice__inner {
  margin: 0 auto;
  max-width: 1156px;
  padding: 0 20px;
}

.voice__heading {
  color: rgba(51, 51, 51, 0.1);
  font-family: futura-pt, sans-serif;
  font-size: 21rem;
  font-weight: 500;
  letter-spacing: calc(30 / 1000 * 1em);
  line-height: calc(140 / 210);
  margin-bottom: 20px;
}

.voice__sub-heading {
  border-bottom: 3px solid #333;
  color: #333;
  font-size: 3rem;
  letter-spacing: calc(100 / 1000 * 1em);
  margin-bottom: 150px;
  margin-left: auto;
  padding-bottom: 5px;
  position: relative;
  width: -webkit-fit-content;
  width: -moz-fit-content;
  width: fit-content;
}

.voice__contents {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  gap: 40px;
}

.voice__item {
  background: #fff;
  border-radius: 20px;
  padding: 40px;
  -webkit-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.voice__title-wrapper {
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin-bottom: 25px;
}

.voice__gradient-circle {
  background-image: linear-gradient(90deg, rgba(251, 213, 251, 1) 35%, rgba(149, 233, 243, 1));
  border-radius: 50%;
  height: 20px;
  margin-right: 15px;
  width: 20px;
  -ms-flex-negative: 0;
  flex-shrink: 0;
  background-size: cover;
}

.voice__title {
  color: #222;
  font-size: 2rem;
  font-weight: bold;
  letter-spacing: calc(100 / 1000 * 1em);
  line-height: calc(36 / 20);
}

.voice__desc {
  color: #222;
  font-size: 1.4rem;
  letter-spacing: calc(100 / 1000 * 1em);
  line-height: calc(32 / 14);
}

.voice__desc span {
  font-weight: bold;
}

/* ----------------------------------------
レスポンシブ対応 - タブレット（1024px以下）
---------------------------------------- */

@media screen and (max-width: 1024px) {
  /* Case Studies タブレット調整 */
  .case-studies {
    padding: 80px 20px;
  }
  
  .case-studies__heading {
    font-size: 14rem;
    margin-bottom: 15px;
  }
  
  .case-studies__sub-heading {
    font-size: 2.2rem;
    margin-bottom: 100px;
  }
  
  .case-studies__contents {
    gap: 50px;
  }
  
  .case-studies__item {
    margin-left: 60px;
  }
  
  .case-studies__num {
    font-size: 8rem;
    left: -50px;
    top: -20px;
  }
  
  .case-studies__box {
    padding: 30px;
  }
  
  .case-studies__icon {
    margin-right: 30px;
    width: 25%;
  }
  
  .case-studies__icon img {
    max-width: 100px;
  }
  
  .case-studies__body {
    width: 75%;
  }
  
  .case-studies__title {
    font-size: 2.2rem;
    margin-bottom: 20px;
  }
  
  .case-studies__desc {
    font-size: 1.3rem;
    line-height: 1.8;
  }

  /* OEM Flow タブレット調整 */
  .oem-flow-section {
    padding-bottom: 70px;
  }
  
  .oem-flow-section__heading {
    font-size: 20rem;
    top: -40px;
  }
  
  .oem-flow-section__sub-heading {
    font-size: 2.2rem;
    margin-bottom: 100px;
  }
  
  .oem-flow-section__list {
    gap: 30px;
  }
  
  .oem-flow-section__card {
    padding: 50px 20px 35px;
  }
  
  .oem-flow-section__img {
    width: 140px;
  }
  
  .oem-flow-section__title {
    font-size: 1.8rem;
    margin-bottom: 15px;
  }
  
  .oem-flow-section__desc {
    font-size: 1.3rem;
    line-height: 1.8;
  }
  
  .oem-flow-section__arrow {
    right: -25px;
    width: 50px;
  }
  
  .oem-flow-section__arrow img {
    width: 25px;
  }

  /* Voice タブレット調整 */
  .voice {
    padding: 80px 20px;
  }
  
  .voice__heading {
    font-size: 14rem;
    margin-bottom: 15px;
  }
  
  .voice__sub-heading {
    font-size: 2.2rem;
    margin-bottom: 100px;
  }
  
  .voice__contents {
    gap: 35px;
  }
  
  .voice__item {
    padding: 35px;
  }
  
  .voice__title {
    font-size: 1.8rem;
  }
  
  .voice__desc {
    font-size: 1.3rem;
    line-height: 1.8;
  }
  
  .voice__gradient-circle {
    height: 18px;
    width: 18px;
    margin-right: 12px;
  }
}

/* ----------------------------------------
レスポンシブ対応 - スマートフォン（767px以下）
---------------------------------------- */

@media screen and (max-width: 767px) {
  /* Case Studies スマホ調整（数字中央配置） */
  .case-studies {
    padding: 60px 20px;
  }
  
  .case-studies__heading {
    font-size: 6rem;
    margin-bottom: 30px;
    text-align: center;
  }
  
  .case-studies__sub-heading {
    font-size: 1.8rem;
    line-height: 1.5;
    margin: 0 auto 60px;
    text-align: center;
  }
  
  .case-studies__sub-heading::after {
    bottom: -10px;
    width: 70%;
  }
  
  .case-studies__contents {
    gap: 40px;
  }
  
  .case-studies__item {
    margin-left: 0;
    text-align: center;
    position: relative;
  }
  
  .case-studies__num {
    font-size: 6rem;
    left: 50%;
    top: -30px;
    transform: translateX(-50%);
    color: rgba(51, 51, 51, 0.2);
  }
  
  .case-studies__box {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    padding: 40px 25px 30px;
    margin-top: 20px;
  }
  
  .case-studies__icon {
    width: 100%;
    margin-right: 0;
    margin-bottom: 25px;
  }
  
  .case-studies__icon img {
    max-width: 200px;
    margin: 0 auto;
  }
  
  .case-studies__body {
    width: 100%;
  }
  
  .case-studies__title {
    font-size: 1.8rem;
    line-height: 1.4;
    margin-bottom: 15px;
  }
  
  .case-studies__desc {
    font-size: 1.2rem;
    line-height: 1.7;
  }

  /* OEM Flow スマホ調整 */
  .oem-flow-section {
    background-image: url(../img/feature_top-bg-sp.webp), url(../img/feature_bg-sp.webp);
    background-position: center top, center 180px;
    background-repeat: no-repeat, repeat-y;
    background-size: 100% 296px, auto;
    padding-bottom: 60px;
  }
  
  .oem-flow-section__overlay {
    display: none;
  }
  
  .oem-flow-section__inner {
    max-width: 430px;
    padding: 20px 0;
  }
  
  .oem-flow-section__heading {
    font-size: 8rem;
    top: -10px;
  }
  
  .oem-flow-section__sub-heading {
    font-size: 1.8rem;
    line-height: 1.5;
    margin: 0 auto 60px;
    text-align: center;
  }
  
  .oem-flow-section__sub-heading::after {
    bottom: -10px;
    width: 70%;
  }
  
  .oem-flow-section__list {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    gap: 60px;
    margin: 0 auto;
    max-width: 320px;
  }
  
  .oem-flow-section__item {
    width: 100%;
  }
  
  .oem-flow-section__card {
    padding: 50px 20px 30px;
  }
  
  .oem-flow-section__num {
    font-size: 2rem;
    height: 50px;
    line-height: 50px;
    width: 50px;
    top: -25px;
  }
  
  .oem-flow-section__img {
    width: 100px;
    margin: 0 auto 15px;
  }
  
  .oem-flow-section__title {
    font-size: 1.6rem;
    margin-bottom: 12px;
  }
  
  .oem-flow-section__desc {
    font-size: 1.2rem;
    line-height: 1.7;
  }
  
  .oem-flow-section__arrow {
    bottom: -40px;
    left: 50%;
    right: unset;
    top: unset;
    transform: translateX(-50%) rotate(90deg);
    width: 40px;
  }
  
  .oem-flow-section__arrow img {
    width: 20px;
  }

  /* Voice スマホ調整 */
  .voice {
    padding: 60px 20px;
  }
  
  .voice__heading {
    font-size: 6rem;
    margin-bottom: 30px;
    text-align: center;
  }
  
  .voice__sub-heading {
    font-size: 1.8rem;
    line-height: 1.5;
    margin: 0 auto 60px;
    text-align: center;
  }
  
  .voice__contents {
    gap: 25px;
  }
  
  .voice__item {
    padding: 25px 20px;
  }
  
  .voice__title-wrapper {
    margin-bottom: 20px;
  }
  
  .voice__gradient-circle {
    height: 16px;
    width: 16px;
    margin-right: 10px;
  }
  
  .voice__title {
    font-size: 1.6rem;
    line-height: 1.4;
  }
  
  .voice__desc {
    font-size: 1.2rem;
    line-height: 1.7;
  }
}

/* ----------------------------------------
極小画面対応（480px以下）
---------------------------------------- */

@media screen and (max-width: 480px) {
  .case-studies {
    padding: 50px 15px;
  }
  
  .case-studies__box {
    padding: 30px 20px 25px;
  }
  
  .case-studies__num {
    font-size: 5rem;
    top: -4px;
  }
  
  .case-studies__title {
    font-size: 1.6rem;
  }
  
  .case-studies__desc {
    font-size: 1.1rem;
  }
  
  .oem-flow-section {
    padding-bottom: 50px;
  }
  
  .oem-flow-section__list {
    max-width: 280px;
  }
  
  .oem-flow-section__card {
    padding: 40px 15px 25px;
  }
  
  .oem-flow-section__title {
    font-size: 1.4rem;
  }
  
  .oem-flow-section__desc {
    font-size: 1.1rem;
  }
  
  .voice {
    padding: 50px 15px;
  }
  
  .voice__item {
    padding: 20px 15px;
  }
  
  .voice__title {
    font-size: 1.4rem;
  }
  
  .voice__desc {
    font-size: 1.1rem;
  }
}