/* ========================================
   第十九回 タイガーオンラインセミナー
======================================== */

.tiger-news-seminar {
  --seminar-red: #b51f26;
  --seminar-red-dark: #87171c;
  --seminar-red-light: #fff6f6;
  --seminar-black: #222222;
  --seminar-text: #444444;
  --seminar-gray: #f6f6f6;
  --seminar-border: #dddddd;

  width: 100%;
  margin: 0;
  padding: 0;
  color: var(--seminar-text);
  line-height: 1.9;
}

.tiger-news-seminar,
.tiger-news-seminar::before,
.tiger-news-seminar::after,
.tiger-news-seminar div,
.tiger-news-seminar section,
.tiger-news-seminar span,
.tiger-news-seminar dl,
.tiger-news-seminar dt,
.tiger-news-seminar dd,
.tiger-news-seminar h2,
.tiger-news-seminar h3,
.tiger-news-seminar h4,
.tiger-news-seminar p,
.tiger-news-seminar a {
  box-sizing: border-box;
}


/* ========================================
   メインビジュアル
======================================== */

.seminar-hero {
  position: relative;
  width: 100%;
  margin: 20px 0 45px;
  padding: 52px 35px 46px;
  overflow: hidden;
  text-align: center;
  background:
    linear-gradient(
      135deg,
      #ffffff 0%,
      #fafafa 60%,
      #f2f2f2 100%
    );
  border-top: 5px solid var(--seminar-red);
  border-bottom: 1px solid #e6e6e6;
}

.seminar-hero::after {
  content: "J";
  position: absolute;
  top: -82px;
  right: 4%;
  color: rgba(181, 31, 38, 0.045);
  font-family: Arial, sans-serif;
  font-size: 280px;
  font-weight: 900;
  line-height: 1;
  pointer-events: none;
}

.seminar-hero-label {
  position: relative;
  z-index: 2;
  display: inline-block;
  margin: 0 auto 18px;
  padding: 6px 18px;
  color: #ffffff;
  background: var(--seminar-red);
  border-radius: 30px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
}

.seminar-hero-title {
  position: relative;
  z-index: 2;
  margin: 0;
  color: var(--seminar-black);
  font-size: 42px;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
}

.seminar-project-name {
  display: block;
  margin-bottom: 3px;
  color: var(--seminar-red);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.seminar-hero-subtitle {
  position: relative;
  z-index: 2;
  margin: 18px 0 25px;
  color: var(--seminar-red-dark);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
  text-align: center;
}

.seminar-hero-tags {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
}

.seminar-hero-tags span {
  min-width: 105px;
  padding: 7px 18px;
  color: var(--seminar-black);
  background: #ffffff;
  border: 1px solid #dddddd;
  border-bottom: 3px solid var(--seminar-red);
  border-radius: 5px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}


/* ========================================
   導入文
======================================== */

.seminar-lead {
  margin: 0 0 55px;
  padding: 0 5px;
}

.seminar-lead p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 2;
}

.seminar-lead p:last-child {
  margin-bottom: 0;
}


/* ========================================
   各セクション
======================================== */

.seminar-section {
  margin: 0 0 65px;
}

.seminar-section:last-child {
  margin-bottom: 0;
}

.seminar-section-title {
  position: relative;
  margin: 0 0 30px;
  padding: 0 0 13px 18px;
  color: var(--seminar-black);
  border-bottom: 1px solid #dddddd;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
}

.seminar-section-title::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 17px;
  left: 0;
  width: 5px;
  background: var(--seminar-red);
  border-radius: 2px;
}

.seminar-section-text {
  margin: -8px 0 28px;
  font-size: 15px;
  line-height: 1.9;
}


/* ========================================
   開催概要
======================================== */

.seminar-info {
  display: grid;
  grid-template-columns: 180px 1fr;
  width: 100%;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--seminar-border);
  border-radius: 7px;
}

.seminar-info dt,
.seminar-info dd {
  margin: 0;
  padding: 17px 22px;
  border-bottom: 1px solid var(--seminar-border);
}

.seminar-info dt {
  color: var(--seminar-black);
  background: #f4f4f4;
  font-size: 14px;
  font-weight: 700;
}

.seminar-info dd {
  color: var(--seminar-text);
  background: #ffffff;
  border-left: 1px solid var(--seminar-border);
  font-size: 15px;
  line-height: 1.8;
}

.seminar-info dt:nth-last-of-type(1),
.seminar-info dd:nth-last-of-type(1) {
  border-bottom: 0;
}


/* ========================================
   3テーマ
======================================== */

.seminar-theme-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 18px;
  width: 100%;
}

.seminar-theme-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 260px;
  padding: 27px 25px 30px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--seminar-border);
  border-radius: 7px;
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.045);
}

.seminar-theme-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--seminar-red);
}

.seminar-theme-number {
  margin-bottom: 10px;
  color: #c1c1c1;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.seminar-theme-card h4 {
  margin: 0 0 7px;
  color: var(--seminar-black);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.5;
}

.seminar-theme-company {
  margin-bottom: 18px;
  padding-bottom: 14px;
  color: var(--seminar-red);
  border-bottom: 1px dotted #aaaaaa;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
}

.seminar-theme-card p {
  margin: 0;
  color: #555555;
  font-size: 14px;
  line-height: 1.85;
}


/* ========================================
   タイガー講演
======================================== */

.seminar-pickup {
  position: relative;
  padding: 32px 34px;
  background:
    linear-gradient(
      135deg,
      #ffffff 0%,
      var(--seminar-red-light) 100%
    );
  border: 1px solid #eadada;
  border-left: 5px solid var(--seminar-red);
  border-radius: 7px;
}

.seminar-pickup-label {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 13px;
  color: #ffffff;
  background: var(--seminar-red);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
}

.seminar-pickup h4 {
  margin: 0 0 19px;
  color: var(--seminar-black);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.6;
}

.seminar-pickup p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
}

.seminar-pickup p:last-child {
  margin-bottom: 0;
}


/* ========================================
   再放送
======================================== */

.seminar-replay {
  padding: 30px 32px 32px;
  background: #f7f7f7;
  border: 1px solid #dddddd;
  border-radius: 7px;
}

.seminar-replay-heading {
  margin: 0 0 13px;
  color: var(--seminar-red);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
}

.seminar-replay > p {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.9;
}

.seminar-replay-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.seminar-replay-item {
  display: flex;
  flex-direction: column;
  padding: 21px 24px;
  background: #ffffff;
  border: 1px solid #dddddd;
  border-radius: 6px;
}

.seminar-replay-num {
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 8px;
  padding: 3px 11px;
  color: #ffffff;
  background: var(--seminar-red);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
}

.seminar-replay-item strong {
  margin-bottom: 3px;
  color: var(--seminar-black);
  font-size: 16px;
  line-height: 1.6;
}

.seminar-replay-item > span:last-child {
  color: #555555;
  font-size: 15px;
}


/* ========================================
   CTA
======================================== */

.seminar-cta-area {
  padding: 40px 30px;
  text-align: center;
  background: var(--seminar-red-light);
  border-top: 3px solid var(--seminar-red);
  border-radius: 7px;
}

.seminar-cta-area h3 {
  margin: 0 0 13px;
  color: var(--seminar-black);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
}

.seminar-cta-area p {
  margin: 0 0 25px;
  color: #555555;
  font-size: 15px;
  line-height: 1.8;
}

.seminar-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 360px;
  gap: 18px;
  padding: 16px 30px;
  color: #ffffff !important;
  background: var(--seminar-red);
  border-radius: 5px;
  box-shadow: 0 5px 15px rgba(181, 31, 38, 0.22);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  text-decoration: none !important;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.seminar-cta-button:hover {
  color: #ffffff !important;
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(181, 31, 38, 0.27);
}

.seminar-cta-button span {
  font-size: 20px;
  line-height: 1;
}


/* ========================================
   タブレット
======================================== */

@media screen and (max-width: 900px) {

  .seminar-hero {
    padding: 45px 26px 42px;
  }

  .seminar-hero-title {
    font-size: 36px;
  }

  .seminar-project-name {
    font-size: 22px;
  }

  .seminar-theme-grid {
    gap: 14px;
  }

  .seminar-theme-card {
    padding: 24px 20px 27px;
  }

  .seminar-theme-card h4 {
    font-size: 19px;
  }

}


/* ========================================
   スマートフォン
======================================== */

@media screen and (max-width: 600px) {

  .seminar-hero {
    margin: 15px 0 35px;
    padding: 35px 17px 32px;
    border-top-width: 4px;
  }

  .seminar-hero::after {
    top: -20px;
    right: -30px;
    font-size: 170px;
  }

  .seminar-hero-label {
    margin-bottom: 15px;
    padding: 5px 13px;
    font-size: 11px;
  }

  .seminar-hero-title {
    font-size: 30px;
  }

  .seminar-project-name {
    margin-bottom: 5px;
    font-size: 18px;
  }

  .seminar-hero-subtitle {
    margin: 15px 0 22px;
    font-size: 15px;
  }

  .seminar-hero-tags {
    gap: 6px;
  }

  .seminar-hero-tags span {
    flex: 1 1 30%;
    min-width: 0;
    padding: 6px 5px;
    font-size: 11px;
  }


  /* 導入 */

  .seminar-lead {
    margin-bottom: 43px;
    padding: 0;
  }

  .seminar-lead p {
    margin-bottom: 15px;
    font-size: 14px;
    line-height: 1.9;
  }


  /* セクション */

  .seminar-section {
    margin-bottom: 50px;
  }

  .seminar-section-title {
    margin-bottom: 23px;
    padding: 0 0 10px 14px;
    font-size: 20px;
  }

  .seminar-section-title::before {
    top: 3px;
    bottom: 13px;
    width: 4px;
  }

  .seminar-section-text {
    margin-bottom: 22px;
    font-size: 14px;
  }


  /* 開催概要 */

  .seminar-info {
    display: block;
    border-radius: 5px;
  }

  .seminar-info dt,
  .seminar-info dd {
    display: block;
    width: 100%;
    padding: 13px 15px;
  }

  .seminar-info dt {
    border-bottom: 0;
    font-size: 13px;
  }

  .seminar-info dd {
    border-left: 0;
    border-bottom: 1px solid var(--seminar-border);
    font-size: 14px;
  }

  .seminar-info dd:last-child {
    border-bottom: 0;
  }


  /* テーマ */

  .seminar-theme-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    gap: 15px;
  }

  .seminar-theme-card {
    min-height: 0;
    padding: 22px 19px 25px;
  }

  .seminar-theme-card h4 {
    font-size: 18px;
  }

  .seminar-theme-company {
    margin-bottom: 14px;
    padding-bottom: 11px;
  }

  .seminar-theme-card p {
    font-size: 14px;
  }


  /* タイガー講演 */

  .seminar-pickup {
    padding: 24px 19px;
    border-left-width: 4px;
  }

  .seminar-pickup h4 {
    margin-bottom: 15px;
    font-size: 18px;
  }

  .seminar-pickup p {
    font-size: 14px;
  }


  /* 再放送 */

  .seminar-replay {
    padding: 24px 18px;
  }

  .seminar-replay-heading {
    font-size: 16px;
  }

  .seminar-replay > p {
    font-size: 14px;
  }

  .seminar-replay-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .seminar-replay-item {
    padding: 18px 17px;
  }

  .seminar-replay-item strong {
    font-size: 15px;
  }


  /* CTA */

  .seminar-cta-area {
    padding: 30px 18px;
  }

  .seminar-cta-area h3 {
    font-size: 20px;
  }

  .seminar-cta-area p {
    font-size: 14px;
  }

  .seminar-cta-button {
    width: 100%;
    min-width: 0;
    gap: 10px;
    padding: 14px 12px;
    font-size: 14px;
  }

}


/* ========================================
   小さいスマートフォン
======================================== */

@media screen and (max-width: 380px) {

  .seminar-hero-title {
    font-size: 27px;
  }

  .seminar-project-name {
    font-size: 17px;
  }

  .seminar-hero-subtitle {
    font-size: 14px;
  }

  .seminar-hero-tags span {
    flex: 1 1 100%;
  }

  .seminar-section-title {
    font-size: 19px;
  }

  .seminar-pickup h4 {
    font-size: 17px;
  }

  .seminar-cta-button {
    font-size: 13px;
  }

}