@charset "utf-8";

/* ===================================
   Abstract Page Styles
   =================================== */

/* メインコンテンツ フォント指定 */
main {
  font-family: 'IBM Plex Sans', 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

/* ヘッドパートセクション */
.head-part-section {
  position: relative;
  margin-top: 70px;
  padding: 124px 0;
  color: #fff;
  text-align: center;
  background-image: url(../img/abstract-head.jpg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.head-part-title {
  position: relative;
  z-index: 1;
  top: auto;
  padding: 0;
  border-radius: 0;
  background: none;
  font-size: 40px;
  font-weight: bold;
}

/* w-1200 */
.w-1200 {
  max-width: 1200px;
}

.general-list-section__inner {
  max-width: 1200px;
  margin: auto;
  padding: 50px;
  background: #fff;
}

/* メインコンテンツセクション */
.main-content-section {
  padding: 90px 0 120px;
}

.main-content-block {
  margin-bottom: 24px;
}

.main-content-block:last-child {
  margin-bottom: 0;
}

.main-content-heading {
  position: relative;
  padding-left: 24px;
  margin-bottom: 20px;
  font-family: 'Jost', sans-serif;
  font-size: 24px;
  font-weight: bold;
  line-height: 1.5;
  letter-spacing: .08em;
  color: #3a80d9;
}

.main-content-heading::before {
  position: absolute;
  top: 0;
  left: 0;
  content: '';
  width: 4px;
  height: 100%;
  background: #3a80d9;
}

.main-content-heading + .main-content-text {
  margin-bottom: 0;
}

.main-content-text {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
}

.main-content-subheading {
  margin-top: 20px;
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: bold;
  color: #3a80d9;
}

.main-content-link,
.main-content-button {
  display: inline-block;
  margin-top: 0px;
  padding: 14px 40px;
  border-radius: 6px;
  background: linear-gradient(131deg, #82c8e8, #3a80d9);
  color: #fff;
  font-weight: bold;
  text-align: center;
}

.main-content-ol {
  margin-top: 16px;
  padding-left: 1.5em;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 16px;
  line-height: 1.8;
  list-style: decimal;
}

.main-content-ol li {
  margin-bottom: 8px;
}

/* シンポジウムリストセクション */
.symposium-list-section {
  padding: 0 0 150px;
}

.symposium-list {
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.symposium-list-item {
  position: relative;
  padding: 80px 40px 64px;
  border-radius: 0;
  background: linear-gradient(180deg, #0537aa, #81c7e7);
  max-width: 1000px;
  color: #fff;
}

.symposium-list-item:nth-child(2n) {
  margin-left: auto;
}

.symposium-list-heading {
  position: absolute;
  top: -40px;
  left: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 12px 10px;
  background: #fff;
  color: #000;
  max-width: 800px;
  width: calc(100% - 40px);
  justify-content: flex-start;
}

.symposium-list-label {
  padding-left: 40px;
  font-size: 20px;
  font-weight: bold;
  color: #3a80d9;
}

.symposium-list-label::before {
  content: '■';
  margin-right: 8px;
}

.symposium-list-theme {
  padding-left: 0;
  font-size: 36px;
  font-weight: bold;
  letter-spacing: .04em;
  color: #3a80d9;
}

.symposium-list-text {
  line-height: 1.8;
  font-size: 18px;
}

/* 一般演題リストセクション */
.general-list-section {
  padding: 0;
}

.general-list-heading {
  position: relative;
  padding-left: 24px;
  margin-bottom: 24px;
  font-family: 'Jost', sans-serif;
  font-size: 24px;
  font-weight: bold;
  line-height: 35px;
  letter-spacing: .08em;
  color: #3a80d9;
}

.general-list-heading::before {
  position: absolute;
  top: 0;
  left: 0;
  content: '';
  width: 4px;
  height: 100%;
  background: #3a80d9;
}

.general-list {
  list-style: none;
  font-family: 'IBM Plex Sans', sans-serif;
}

.general-list-a {
  display: flex;
  align-items: center;
  padding: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .08em;
  color: #000;
  pointer-events: none;
}

.general-list-num {
  margin-right: 7px;
  color: #3a80d9;
  text-align: left;
  display: block;
  width: 33px;
}

/* ========================================================
  スマホ
======================================================== */
@media (max-width: 768px) {
  .head-part-section {
    margin-top: 80px;
    padding: 80px 0;
  }

  .head-part-title {
    font-size: 24px;
  }

  .main-content-section {
    padding: 40px 0 60px;
  }

  .main-content-heading {
    font-size: 20px;
    line-height: 28px;
  }

  /* スマホ_シンポジウムリスト */
  .symposium-list-section {
    padding: 0 0 40px;
  }

  .symposium-list-item {
    padding: 80px 20px 40px;
  }

  .symposium-list-heading {
    left: 10px;
    width: calc(100% - 20px);
  }

  .symposium-list-label {
    padding-left: 0;
    font-size: 16px;
  }

  .symposium-list-theme {
    padding-left: 0;
    font-size: 18px;
  }

  .symposium-list-text {
    font-size: 14px;
  }

  /* スマホ_一般演題リスト */
  .general-list-section {
    padding: 0;
  }

  .general-list-section__inner {
    max-width: calc(100% - 40px);
    padding: 20px;
  }

  .general-list-a {
    font-size: 14px;
  }

  .general-list-heading {
    font-size: 20px;
    line-height: 28px;
  }

  /* スマホ_テキスト系 */
  .main-content-text {
    font-size: 14px;
  }

  .main-content-ol {
    font-size: 14px;
  }
}

.general-list-section__inner p {
  font-size: 12px;
  margin-top: 24px;
  line-height: 2;
}