/* =========================================================
   SiC・GaN技術フォーラム 2026 LP専用スタイル
   ベース: corestaff CI（#004795 / #0092D6 / #132427 / #FAFCF8 / #CC0000）
   ========================================================= */
main {
  font-size: 16px;
  line-height: 1.8;
  color: #333333;
}
/* ---------- 共通パーツ ---------- */
h2 {
  font-size: 26px;
  font-weight: bold;
  border-left: 6px solid #004795;
  padding-left: 16px;
  margin: 0 0 40px;
  line-height: 1.4;
}

.lp_btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: #CC0000;
  color: #fff;
  font-weight: bold;
  font-size: 18px;
  padding: 20px 56px;
  border-radius: 4px;
  box-shadow: 0 6px 0 #960000;
  transition: .15s;
}
.lp_btn:hover {
  transform: translateY(3px);
  box-shadow: 0 3px 0 #960000;
}
.lp_btn::after {
  content: "";
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 0 6px 9px;
  border-color: transparent transparent transparent #fff;
}
/* ---------- ヒーロー ---------- */
section.lp_hero {
  color: #fff;
  position: relative;
  overflow: hidden;
}
.lp_hero_inner {
  padding: 56px 40px 48px;
  position: relative;
  z-index: 1;
  background-color: #004896;
}
.lp_hero_catch {
  font-weight: bold;
  color: #AAD4E8;
  margin: 0 0 18px;
  line-height: 1.8;
}
.lp_hero_title {
  font-size: 44px;
  font-weight: bold;
  line-height: 1.35;
  margin: 0 0 28px;
}
.lp_hero_title .accent {
  color: #4FC3F7;
}
.lp_hero_lead {
  line-height: 2;
  color: #E5EDEC;
  margin: 0 0 36px;
  max-width: 640px;
}
.lp_hero_meta {
  font-size: 18px;
  margin: 0 0 36px;
  padding: 24px 28px;
  background-color: rgba(250, 252, 248, .08);
  border: 1px solid rgba(250, 252, 248, .25);
  border-radius: 6px;
}
.lp_hero_meta dl {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.lp_hero_meta dt {
  color: #4FC3F7;
  font-weight: bold;
  flex-shrink: 0;
  width: 2.5rem;
}
.lp_hero_meta dd {
  font-weight: bold;
}
.lp_hero_meta dd span {
  font-size: 30px;
}
.lp_hero_note {
  color: #AAD4E8;
  margin-top: 18px;
}
/* ---------- こんな方 / メリット ---------- */
.lp_two_col {
  display: flex;
  gap: 30px;
  margin: 0 0 20px;
  padding: 40px;
  background-image:
    url("img/background.jpeg");
  background-size: cover;
  background-position: center;
    color: #333;
}
.lp_box {
  flex: 1;
  background-color: #FFFFFF;
  border: 1px solid #E2E2E2;
  padding: 32px 30px;
  border-radius: 6px;
}
.lp_box_head {
  font-size: 21px;
  font-weight: bold;

  margin: 0 0 20px;
}
.lp_box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.lp_box li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0 0 14px;
}
.lp_box li:last-child {
  margin-bottom: 0;
}
.lp_box li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border-radius: 50%;
  background-color: #0092D6;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/12px no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/12px no-repeat;
}
/* ---------- 登壇者 ---------- */


.lp_speaker_card {
  background-color: #FFFFFF;
  border: 1px solid #E2E2E2;
  border-radius: 6px;
  padding: 28px 28px 0px;
    margin-bottom: 50px;
}
.lp_speaker_top {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin: 0 0 16px;
}
.lp_speaker_logo {
  flex-shrink: 0;
  width: 120px;
  height: 120px;

  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;

}
.lp_speaker_logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6px;
  display: block;
}
.lp_avatar {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;


  font-weight: 700;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.lp_avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.lp_speaker_company {
  font-size: 24px;
  font-weight: 700;
  color: #004896;
  letter-spacing: .04em;
  margin: 0 0 4px;
}
.lp_speaker_name {
  font-size: 21px;
  font-weight: 700;

}
.lp_speaker_name small {
margin: 0px 10px;
  font-weight: 400;
  color: #666666;
}
.lp_speaker_tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background-color: #CC0000;
  padding: 2px 10px;
  border-radius: 3px;
  vertical-align: middle;
}
.lp_speaker_bio {
  font-size: 13px;
  line-height: 1.8;

}

.lp_history_toggle {
  margin: 14px 0 4px;
}
.lp_history_toggle summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  font-weight: 700;
  color: #4FC3F7;
  background-color: #F0F8FD;
  border: 1px solid #A8D8F0;
  border-radius: 999px;
  padding: 5px 12px;
  user-select: none;
  transition: background-color .15s, color .15s, border-color .15s;
}
.lp_history_toggle summary::-webkit-details-marker {
  display: none;
}
.lp_history_toggle summary:hover {
  background-color: #A8D8F0;
  border-color: #A8D8F0;
  color: #fff;
}
.lp_history_toggle summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform .2s;
  margin-top: -3px;
}
.lp_history_label_open {
  display: none;
}
.lp_history_toggle[open] summary .lp_history_label_closed {
  display: none;
}
.lp_history_toggle[open] summary .lp_history_label_open {
  display: inline;
}
.lp_history_toggle[open] summary {
  background-color: #4FC3F7;
  border-color: #4FC3F7;
  color: #fff;
}
.lp_history_toggle[open] summary::after {
  transform: rotate(-135deg);
  margin-top: 3px;
}
.lp_history_toggle .lp_speaker_history {
  margin-top: 16px;
}
.lp_speaker_history {
  display: grid;
  grid-template-columns: 56px 1fr;
  margin: 0;
}
.lp_speaker_history dt {
  padding: 6px 0;
  font-size: 13px;
  font-weight: 700;
  color: #004795;
}
.lp_speaker_history dd {
  margin: 0;
  padding: 6px 0;
  font-size: 12px;
  line-height: 1.8;
  color: #555555;
}
.lp_speaker_history dt:not(:last-of-type),
.lp_speaker_history dd:not(:last-of-type) {
  border-bottom: 1px dashed #E2E2E2;
}
/* ---------- ファシリテーター紹介 ---------- */
.lp_facilitator_card {
  background-color: #FFFFFF;
  border: 1px solid #E2E2E2;
  border-radius: 6px;
  padding: 18px;
  margin-bottom: 50px;
}
.lp_facilitator_label {

  font-size: 21px;
  font-weight: bold;
  color: #4FC3F7;


  margin: 0 0 14px;
}
.lp_facilitator_body {
  display: flex;
  align-items: center;
  gap: 20px;
}
.lp_facilitator_photo {
  flex-shrink: 0;
  width: 140px;
  border-radius: 6px;
  overflow: hidden;
}
.lp_facilitator_photo img {
  width: 100%;
  height: auto;
  display: block;
}
.lp_facilitator_names {
  display: flex;
  flex: 1;

  gap: 50px;
  text-align: left;
}
.lp_facilitator_person .lp_speaker_company {
  margin: 0 0 4px;
  font-size: 16px;
}
.lp_facilitator_person .lp_speaker_name {
  font-size: 16px;
}
/* ---------- 長岡パワーエレクトロニクス紹介 ---------- */
.lp_organizer {
  background-color: #E6F2FB;
  padding: 36px 40px;

}

.lp_organizer_head {
font-size: 21px;
  font-weight: bold;
  margin: 0 0 10px;
}
.lp_organizer_txt {

  line-height: 1.9;
}
.lp_organizer_txt a{
    text-decoration: underline;
}
.lp_organizer_txt:last-child{
    text-align: right
}
/* ---------- タイムライン(プログラム) ---------- */
.lp_timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}
.lp_timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 10px;
  left: 82px;
  width: 2px;
  background-color: #D9E7EE;
}
.lp_timeline li {
  display: flex;
  gap: 24px;
  padding: 0 0 34px;
  position: relative;
}
.lp_timeline li:last-child {
  padding-bottom: 0;
}
.lp_time {
  flex-shrink: 0;
  width: 64px;
  font-weight: bold;
  font-size: 16px;
  color: #004795;
  text-align: right;
  position: relative;
}
.lp_time::after {
  content: "";
  position: absolute;
  top: 10px;
  right: -28px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #4FC3F7;
  border: 3px solid #fff;
  box-shadow: 0 0 0 1px #4FC3F7;
}
.lp_timeline_body {
  padding-top: 1px;
}
.lp_timeline_head {
  font-weight: bold;
  font-size: 16px;

  margin: 0 10px 4px;
}
.lp_timeline_txt {
  font-size: 14px;

     margin: 0 10px 4px;
}

/* ---------- イベント概要テーブル ---------- */
.lp_overview {
  border-top: 1px solid #E2E2E2;
}
.lp_overview dl {
  display: flex;
  border-bottom: 1px solid #E2E2E2;
}
.lp_overview dt {
  flex: 0 0 160px;
  padding: 18px 20px;
  background-color: #fff;
  font-weight: bold;

  color: #004795;
}
.lp_overview dd {
  flex: 1;
  padding: 18px 20px;
 
}
/* ---------- CTA ---------- */
section.lp_cta {
  padding: 56px 40px;
  background-color: #004795;
  color: #fff;
  text-align: center;
}
.lp_cta_head {
  font-size: 26px;
  font-weight: bold;
  margin: 0 0 14px;
}
.lp_cta_capacity {
  display: inline-flex;
  gap: 24px;
  font-size: 13px;
  margin-top: 28px;
  color: #C9E2F5;
}
.lp_cta_capacity strong {
  color: #fff;
  font-size: 15px;
}
.lp_cta_annotation {
  margin-top: 24px;
  font-size: 12px;
  color: #9FC4E8;
}
.lp_cta_annotation a{
     color: #9FC4E8;
}

/* =========================================================
   タブレット用
   ========================================================= */
@media screen and (max-width: 1000px) {
  .lp_hero_title {
    font-size: 34px;
  }
  .lp_two_col {
    flex-direction: column;
  }

  .lp_organizer {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}
/* =========================================================
   スマホ用
   ========================================================= */
@media screen and (max-width: 750px) {
  .lp_header_tel {
    display: none;
  }
  .lp_hero_inner {
    padding: 48px 20px 44px;
  }
  .lp_hero_title {
    font-size: 26px;
  }
  .lp_hero_meta {
    flex-direction: column;
    gap: 10px;
    padding: 20px;
  }
  .lp_sec_head {
    font-size: 21px;
  }
  .lp_speaker_top {
    flex-wrap: wrap;
  }
  .lp_speaker_history {
    grid-template-columns: 1fr;
  }
  .lp_speaker_history dt {
    padding-bottom: 0;
    border-bottom: none !important;
  }
  .lp_timeline::before {
    left: 56px;
  }
  .lp_time {
    width: 44px;
    font-size: 13px;
  }
  .lp_time::after {
    right: -20px;
  }
    .lp_facilitator_names {
    flex-direction: column;
    gap: 16px;
    align-items: center;
    text-align: center;
  }
  .lp_facilitator_body {
    flex-direction: column;
    text-align: center;
  }
  .lp_overview dl {
    flex-direction: column;
  }
  .lp_overview dt {
    flex: none;
    padding-bottom: 6px;
  }
  .lp_overview dd {
    padding-top: 0;
  }
  .lp_two_col {
    padding: 20px;
  }
  .lp_btn {
    width: 100%;
    padding: 18px 20px;
  }
  .lp_cta_capacity {
    flex-direction: column;
    gap: 6px;
  }
}
@media screen and (max-width: 350px) {
  .lp_hero_title {
    font-size: 22px;
  }
    .lp_speaker_card{
        text-align: center;
        
    }
    .lp_speaker_logo,.lp_avatar{
        margin: auto;
    }
}