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

	.structure{
		position: relative;
		width: 18.5vw;
		margin: 0 .5vw;
	}
	.structure-text{
		width: 18.5vw;
		font-size: 1.5vw;
		font-weight: bold;
		text-align: center;
		line-height: 1.8vw;
		color: #000;
		margin-top: .6vw;
	}
	.fcc{
		width: 18.5vw;
		height: 12vw;
		border-radius: 1.5vw;
		border: solid .2vw #666;
		position: relative;
		overflow: hidden;
	}
	.fcc > video{
		position: absolute;
		top: -.5vw;
		left: -1.8vw;
		width: 22vw;
	}
	.hcp{
		width: 18.5vw;
		height: 12vw;
		border-radius: 1.5vw;
		border: solid .2vw #666;
		position: relative;
		overflow: hidden;
	}
	.hcp > video{
		position: absolute;
		top: -4vw;
		left: -1.4vw;
		width: 22vw;
	}
	.bcc{
		width: 18.5vw;
		height: 12vw;
		border-radius: 1.5vw;
		border: solid .2vw #666;
		position: relative;
		overflow: hidden;
	}
	.bcc > video{
		position: absolute;
		top: -1.5vw;
		left: -3.8vw;
		width: 26vw;
	}


	.video{
		width: 39.4vw;
		margin: 1vw 0;
		height: 21.9vw;
		border-radius: 2vw;
		border: solid .3vw #666;
		position: relative;
		overflow: hidden;
		box-shadow: .5vw .5vw 1vw #aaa;
	}
	.video > video{
		position: absolute;
		top: -0vw;
		left: -0vw;
		width: 40vw;
	}
	.long-figure{
		width: 60vw;
		z-index: 1;
	}
	.short-figure{
		width: 45vw;
		z-index: 1;
	}

	#work-hardening{
		width: 60vw;
		height: 20vw;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
	}
	.line{
		width: 60vw;
		height: .3vw;
		background: linear-gradient(90deg, #fff 0, #bd7d57 50%, #fff 100%);
		margin: .5vw 0;
	}
	.crystals, .crystals2{
		display: flex;
		justify-content: center;
		align-items: center;
	}
	.crystals > div{
		width: 6vw;
		height: 6vw;
		border-radius: 1vw;
		margin: .5vw;
		background-color: #bd7d57;
		animation: crystals 2s infinite linear;
	}
	.crystals2 > div{
		width: 6vw;
		height: 6vw;
		border-radius: 1vw;
		margin: .5vw;
		background-color: #bd7d57;
		animation: crystals2 2s infinite linear;
	}

	@keyframes crystals {
		0% {width: 6vw; height: 6vw;}
		100% {width: 18vw; height: 2vw;}
	}
	@keyframes crystals2 {
		0% {width: 18vw; height: 2vw; background-color: #bd7d57;}
		100% {width: 9vw; height: 4vw; background-color: #e83719;}
	}
}





















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

	.structure{
		position: relative;
		width: 95vw;
		margin: 2.5vw;
	}
	.structure-text{
		width: 95vw;
		font-size: 6vw;
		font-weight: bold;
		text-align: center;
		line-height: 7vw;
		color: #000;
		margin-top: 2vw;
	}
	.fcc{
		width: 93vw;
		height: 60vw;
		border-radius: 6vw;
		border: solid 1vw #666;
		position: relative;
		overflow: hidden;
	}
	.fcc > video{
		position: absolute;
		top: -2.5vw;
		left: -9vw;
		width: 110vw;
	}
	.hcp{
		width: 93vw;
		height: 60vw;
		border-radius: 6vw;
		border: solid 1vw #666;
		position: relative;
		overflow: hidden;
	}
	.hcp > video{
		position: absolute;
		top: -20vw;
		left: -7vw;
		width: 110vw;
	}
	.bcc{
		width: 93vw;
		height: 60vw;
		border-radius: 6vw;
		border: solid 1vw #666;
		position: relative;
		overflow: hidden;
	}
	.bcc > video{
		position: absolute;
		top: -7.5vw;
		left: -19vw;
		width: 130vw;
	}
	.video{
		width: 80vw;
		height: 45.7vw;
		border-radius: 4vw;
		border: solid .6vw #666;
		position: relative;
		overflow: hidden;
		margin: 0 10vw;
	}
	.video > video{
		position: absolute;
		top: 0vw;
		left: 0vw;
		width: 82vw;
	}
	.long-figure{
		width: 100vw;
		z-index: 1;
	}
	.short-figure{
		width: 100vw;
		z-index: 1;
	}

	#work-hardening{
		width: 100vw;
		height: 50vw;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
	}
	.line{
		width: 100vw;
		height: .9vw;
		background: linear-gradient(90deg, #fff 0, #bd7d57 50%, #fff 100%);
		margin: 1.5vw 0;
	}
	.crystals, .crystals2{
		display: flex;
		justify-content: center;
		align-items: center;
	}
	.crystals > div{
		width: 18vw;
		height: 18vw;
		border-radius: 3vw;
		margin: 1.5vw;
		background-color: #bd7d57;
		animation: crystals 2s infinite linear;
	}
	.crystals2 > div{
		width: 18vw;
		height: 18vw;
		border-radius: 3vw;
		margin: 1.5vw;
		background-color: #bd7d57;
		animation: crystals2 2s infinite linear;
	}

	@keyframes crystals {
		0% {width: 18vw; height: 18vw;}
		100% {width: 54vw; height: 6vw;}
	}
	@keyframes crystals2 {
		0% {width: 54vw; height: 6vw; background-color: #bd7d57;}
		100% {width: 27vw; height: 12vw; background-color: #e83719;}
	}
}