@media screen and (max-width: 1024px) {
	.navtop.container {
		padding: 1em 2em 0.4em 2em;
	}
	.hbg-btn {
		display: inline-block;
	}
	.navbar {
		position: fixed;
		top: 100px;
		right: 0;
		width: 160px;
		padding-top: 20px;
		background: rgba(255, 255, 255, 1);
		transition: transform 0.4s ease;
		transform: translateX(100%);
	}
	header.detachedHide .navbar {
		transform: translateX(100%);
	}
	.navbar.show,
	header.detached.show .navbar.show {
		transform: translateX(0);
	}
	.navbar li {
		display: block;
		padding: 15px 20px;
		margin-bottom: 10px;
	}
	.navbar li + li {
		margin-left: 0;
	}
	.speakers-group {
		display: block;
	}
	.speaker {
		display: block;
		margin: 0 auto 50px;
	}
}
@media screen and (max-width: 768px) {
	body {
		font-size: 1rem;
	}
	/* text */
	.t-xlarge {
		font-size: 1.6em; /* 30px */
	}
	.t-large {
		font-size: 1.4em; /* 26px */
	}
	.t-midlarge {
		font-size: 1.2em; /* 22px */
	}
	.t-mid {
		font-size: 1em; /* 18px */
	}
	.t-small {
		font-size: 0.9em; /* 16px */
	}
	.t-xsmall {
		font-size: 0.8em; /* 14px */
	}
	
	.section-title {
		font-size: 20px;
	}

	/* layout */
	.container {
		padding: 4em 1.3em;
	}
	.bg-w-sm {
		padding: 15px;
		margin: 0 -15px;
	}
	.text-center-sm {
		text-align: center;
	}
	.mx-auto-sm {
		margin-left: auto;
		margin-right: auto;
	}

	.main-bg-img {
		position: absolute;
		left: 0;
		right: 0;
		margin: auto;
		top: 100px;
	}
	.topsec {
	}
	.hbg-btn {
		margin-top: 0;
		height: 44px;
	}
	.speaker {
		margin-bottom: 0px;
	}
	.info-box {
		padding: 2em 0;
	}
	.info-date {
		margin-bottom: 2em;
	}
	.rollover figure .back {
		width: 240px;
		margin-left: -16px;
	}
	.long-btn {
	    height: 135px;
	    width: 36px;
	    padding: 9px;
	    letter-spacing: 3px;
	    font-size: 19px;
	}
	.top-btn {
		width: 36px;
		height: 36px;
		padding: 14px 12.5px;
	}
	.top-btn::before {
		width: 9px;
		height: 9px;
	}
}

@media screen and (max-width: 574px) {
	.topsec h1, .topsec h2 {
		text-align: center;
	}
	.topsec h1 img:first-of-type {
		width: 80%;
	}
	.top-date {
		text-align: center;
	}
	.top-date .col {
	    margin-top: 10px;
	}
}
@media screen and (max-width: 530px) {
	header {
		height: 70px;
	}
	.logo {
		height: 100%;
	}
	.logo:first-of-type {
		height: 70%;
	}
	.logo img {
		margin-right: 15px;
	}
	.navbar {
		top: 70px;
	}
	
	.d-table {
		display: block;
	}
	.d-row {
		display: block;
	}
	.d-cell {
		display: block;
	}
	.form-item label {
		margin-bottom: 10px;
	}
	.content {
	    padding: 4em 1em;
	}

	.card {
		margin: 0;
	}
	.card-footer h4 {
		margin-bottom: 0;
	}
	/* info */
	.time-row, .notice {
		display: block;
	}
	.time-col, .event-col {
		width: 100%;
	}
	.name-wrap {
		white-space: normal;
	}
}
@media screen and (max-width: 370px) {
	#spk01 .shadow {
		-webkit-mask-size: 100% auto;
	}
	#spk01 .speaker-info {
		padding: 0 10px;
	}
}
@media screen and (max-width: 350px) {
	#spk02 .shadow, #spk03 .shadow {
		-webkit-mask-size: 100% auto;
	}
}