@charset "utf-8";
/***** 全体 *****/
.l-inner {
	margin: 0 3rem 3rem;
}

.l-contents {
	min-height: 800px;
	padding: 3rem;
	background-color: #fff;
	border-radius: 5px;
}

.c-title__main {
	margin-bottom: 3rem;
	position: relative;
	z-index: 1;
}

.c-title__main::before {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 100px;
	right: 100px;
	border-radius: 100px / 30px;
	box-shadow: 0 0 28px rgba(255, 255, 255, .5);
	content: '';
	z-index: -1;
}

.c-title__main h2 {
	padding: 2rem 2.4rem;
	background-color: var(--base-color);
	background-image: linear-gradient(-30deg, #e3eafb 0%, #e7f5ed 30%, #fff 70%);
	border-radius: 5px;
	font-size: 2.8rem;
	font-weight: 600;
	font-family: 'Noto Serif JP', serif;
	letter-spacing: 0.08em;
}

.c-item {
	margin-bottom: 3rem;
}

.c-item__in {
	margin-bottom: 2rem;
}

.c-item:last-child,
.c-item__in:last-child {
	margin-bottom: 0;
}

.indent{
	display: inline-block;
	text-indent: 16.9rem;
}

@media screen and (max-width:768px) {
	.l-inner {
		margin: 0 1.6rem 1.6rem;
		padding-top: 60px;
	}
	
	.l-contents {
		padding: 1.6rem;
	}
	
	.c-title__main {
		margin: 1.6rem 0;
	}
	
	.c-title__main h2 {
		padding: 1.6rem;
		font-size: 2rem;
	}
	.indent{
	display: inline-block;
	text-indent: 16.8rem;
}
}

/***** 準備中ページ *****/
.c-under__txt {
	display: flex;
	align-items: center;
	min-height: 200px;
	margin-left: 100px;
	font-size: 1.8rem;
}

@media screen and (max-width:768px) {
	.c-under__txt {
		font-size: 1.6rem;
		margin-left: 30px;
	}
}

/***** 見出し *****/
.c-title__large {
	font-family: 'Noto Serif JP', serif;
	margin-bottom: 2rem;
	padding: 1.5rem 0;
	font-size: 2.2rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	background: linear-gradient(to right, var(--sub-color),#CADEEE);
	background-repeat: no-repeat;
	background-size: 100% 5px;
	background-position: bottom;
}

.c-title__medium {
	font-family: 'Noto Serif JP', serif;
	font-size: 1.8rem;
	font-weight: 700;
	margin-bottom: 2rem;
	padding-left: 1rem;
	border-left: 5px dotted var(--sub-color);
}

.c-title__small {
	font-family: 'Noto Serif JP', serif;
	font-size: 1.8rem;
	font-weight: 700;
	margin-bottom: 2rem;
	padding-bottom: 0.8rem;
	border-bottom: 3px dotted var(--sub-color);
}

.c-title__sub {
	font-family: 'Noto Serif JP', serif;
	font-weight: 700;
	margin: 1rem 0 2rem;
	color: var(--point-color);
}

@media screen and (max-width:768px) {
	.c-title__large {
		font-size: 1.8rem;
		margin-bottom: 2.4rem;
	}
	
	.c-title__medium {
		margin-bottom: 1.6rem;
	}
	
	.c-title__small {
		font-size: 1.6rem;
	}
	
	.c-title__sub {
		margin: 1rem 0 1.6rem
	}
}

/***** 画像 *****/
.c-img__full {
	width: 100%;
	margin-inline: auto;
}

/***** ボックス *****/
.c-box {
	margin-bottom: 2rem;
	padding: 2rem;
}

.c-box__gray {
	background-color: #f2f5f7;
}

.c-box__red {
	border: 2px solid #cc0000;
}

@media screen and (max-width:768px){
	.c-box {
		padding: 1.5rem;
	}
}

/***** テーブル *****/
.c-table {
	width: 100%;
}

.c-table th {
	padding: 1.5rem;
	font-weight: 600;
	text-align: center;
	color: #fff;
	border: 1px solid #ddd;
	background-color: var(--sub-color);
}

.c-table td {
	padding: 1.5rem;
	border: 1px solid #ddd;
}

/***** スマホテーブル *****/
@media screen and (max-width:768px) {
	.js-scrollable {
		overflow-x: scroll;
		width: 100%;
	}
}


/***** 開催概要 *****/
.p-outline__dl dl {
	display: flex;
}

.p-outline__dl dt {
	border-bottom: 2px solid var(--sub-color);
	padding: 2rem 0;
	width: 25%;
	display: flex;
	align-items: center;
}

.p-outline__dl dd {
	flex: 1;
	border-bottom: 2px solid #ccc;
	padding: 2rem 0 2rem 1rem;
}

@media screen and (max-width:768px) {
	.p-outline__dl dl {
		display: block;
	}
	
	.p-outline__dl dt {
		width: 100%;
		padding: 0.5rem 1rem;
		border-left: 3px dotted var(--base-color);
	}
	
	.p-outline__dl dd {
		border-bottom: none;
		padding: 1rem 0 2rem;
	}
}

/***** 会長挨拶 *****/
.p-greeting__ph {
	margin-bottom: 4rem;
	display: flex;
	justify-content: flex-end;
	align-items: flex-end;
	gap: 30px;
}

.p-greeting__ph dt {
	text-align: right;
}

.p-greeting__ph dd {
	width: 150px;
}

.p-greeting__txt {
	/*text-indent: 1em;*/
	margin-top: 1.5rem;
}

@media screen and (max-width:768px) {
	.p-greeting__ph {
		margin-bottom: 3rem;
		flex-direction: column;
		align-items: center;
		gap: 20px;
	}
	
	.p-greeting__ph dt {
		text-align: center;
	}
	
	.p-greeting__ph dd {
		margin-inline: auto;
	}
}

/***** 宿泊のご案内 *****/
.p-stay__list li {
	margin-bottom: 10px;
	font-size: 1.8rem;
	font-weight: 500;
}

.p-stay__list__num {
	color: var(--sub-color);
	padding-right: 0.2em;
	font-size: 2rem;
}

/***** 演題募集 *****/
.p-abs__txtTable + .p-abs__txtTable {
	margin-top: 2rem;
}

.p-abs__txtTable tr:first-child td {
	width: 68%;
}
.p-abs__txtTable td {
	font-size: 1.5rem;
}

.p-abs__table th {
	text-align: left;
	width: 65%;
}

.p-abs__table tr:nth-child(even) td {
	background-color: #eff8ff;
}

.p-abs__flexTable {
	display: flex;
	justify-content: space-between;
	gap: 1.5rem;
}

.p-abs__flexTable .c-table {
	flex: 1;
}

.p-abs__flexTable th {
	width: 50px;
}

.p-abs__table02 th {
	width: 30%;
}

.p-abs__accordion {
	max-width: 100%;
}

.p-abs__accordion summary {
	width: 120px;
	display: flex;
	justify-content: center;
	align-items: center;
	padding: 1.5rem;
	color: #fff;
	font-weight: 500;
	letter-spacing: 0.05em;
	background-color: var(--sub-color);
	border-radius: 3px;
	cursor: pointer;
	position: relative;
}

.p-abs__accordion summary::-webkit-details-marker {
	display: none;
}

.p-abs__accordion summary::after {
	transform: translateY(-25%) rotate(45deg);
	width: 7px;
	height: 7px;
	margin-left: 10px;
	border-bottom: 3px solid #fff;
	border-right: 3px solid #fff;
	content: '';
	transition: transform .3s;
}

.p-abs__accordion[open] summary::after {
	transform: rotate(225deg);
}

.p-abs__accordion p {
	transform: none;
	opacity: 1;
	overflow-wrap: anywhere;
	padding: 1.5rem 0;
}

.p-abs__subttl {
	font-family: 'Noto Sans JP', sans-serif;
	font-weight: 500;
	font-size: 1.6rem;
}

@media screen and (max-width:768px) {
	.p-abs__accordion summary {
		padding: 1rem 1.5rem;
	}
	
	.p-abs__flexTable {
		flex-direction: column;
		gap: 0;
	}
	
	.p-abs__flexTable .c-table + .c-table td,
	.p-abs__flexTable .c-table + .c-table th {
		border-top: none;
	}
}

/***** 参加登録のご案内 *****/
.p-join__table th:first-child {
	width: 60%;
}

.p-join__table th:nth-child(2),
.p-join__table th:last-child {
	width: 20%;
}

.p-join__flow__list {
	display: grid;
	grid-template-columns: 1fr 1fr 1fr;
	gap: 3.6rem;
	padding-top: 2.5rem;
}

.p-join__flow__item {
	border: 2px solid var(--sub-color);
	position: relative;
	padding: 4rem 1rem 2rem;
	text-align: center;
}

.p-join__flow__item::after {
	content: "";
	width: 14px;
	height: 14px;
	display: inline-block;
	border-top: 3px solid var(--sub-color);
	border-right: 3px solid var(--sub-color);
	position: absolute;
	top: calc(50% - 14px);
	left: -32px;
	transform: rotate(45deg);
}

.p-join__flow__item:first-child::after {
	content: none;
}

.p-join__flow__number {
	width: 5rem;
	height: 5rem;
	background-color: var(--sub-color);
	color: #fff;
	font-weight: 700;
	border-radius: 50%;
	position: absolute;
	top: -2.5rem;
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	padding: 0.5rem;
	line-height: 1.2;
}

.p-join__flow__number small {
	font-size: 1rem;
}

.p-join__flow__number span {
	font-size: 1.8rem;
}

.p-join__flow__content h5 {
	font-weight: 600;
	color: var(--sub-color);
	font-size: 1.8rem;
}

.p-join__flow__content p {
	margin-top: 1rem;
	font-size: 1.2rem;
}

.p-join__fig {
	margin-block: 2rem;
}

.p-join__fig img {
	width: auto;
}

.p-join__table02 th:first-child {
	width: 20%;
}

.p-join__table03 th {
	width: 25%;
}

.p-join__table04 th {
	width: 15%;
}

.p-join__table05 th {
	width: 32%;
}

.p-join__accordion {
	margin-bottom: 5px;
	border-bottom: 2px solid #ddd;
}

.p-join__accordion summary {
	display: flex;
	justify-content: space-between;
	align-items: center;
	position: relative;
	padding: 1em 1em 1em 2em;
	cursor: pointer;
}

.p-join__accordion summary::before,
.p-join__accordion div::before {
	position: absolute;
	left: 0;
	font-weight: 700;
	font-size: 1.8rem;
}

.p-join__accordion summary::before {
	color: var(--sub-color);
	content: "Q";
}

.p-join__accordion summary span {
	transform: translateY(-25%) rotate(45deg);
	width: 10px;
	height: 10px;
	margin-left: 10px;
	border-bottom: 3px solid var(--base-color);
	border-right: 3px solid var(--base-color);
	flex-shrink: 0;
	content: '';
	transition: transform .5s;
}

.p-join__accordion[open] summary span {
	transform: rotate(225deg);
}

.p-join__accordion div {
	position: relative;
	transform: translateY(-10px);
	opacity: 0;
	margin: 0;
	padding: 0 2em 1.5em;
	transition: transform .5s, opacity .5s;
}

.p-join__accordion[open] div {
	transform: none;
	opacity: 1;
}

.p-join__accordion div::before {
	color: #8f3a3a;
	content: "A";
	left: 2px;
}

@media screen and (max-width:768px) {
	.p-join__table th,
	.p-join__table td {
		font-size: 1.4rem;
	}
	
	.p-join__flow__list {
		grid-template-columns: 1fr;
	}
	
	.p-join__flow__item {
		padding: 3rem 1.5rem 1.5rem;
	}
	
	.p-join__flow__item::after {
		content: none;
	}
	
	.p-join__flow__content h5 {
		font-size: 1.6rem;
	}
	
	.p-join__flow__content p {
		margin-top: 0;
	}
	
	.p-join__table02 th:first-child {
		width: 30%;
	}
	
	.p-join__table03 th,
	.p-join__table03 td {
		font-size: 1.4rem;
	}
	
	.p-join__table04 th {
		width: 25%;
	}
}
/* 宿泊のご案内：ホテル一覧2段組みレイアウト */
.p-stay__columns {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px; /* 左右のカラム間の余白 */
  margin-bottom: 20px;
}

.p-stay__column {
  width: calc(50% - 15px); /* 余白を考慮して幅を50%に設定 */
}

/* タブレット・スマホ用のレスポンシブ設定（画面幅768px以下で1段組み） */
@media screen and (max-width: 768px) {
  .p-stay__columns {
    display: block;
  }
  .p-stay__column {
    width: 100%;
  }
  .p-stay__column:first-child {
    margin-bottom: 30px; /* 1段目と2段目が縦に並んだ際の余白 */
  }
}