:root {
	--c-red: #c8161d;
	--c-gray: #575757;
	--c-gcc: #CCCCCC;
	--c-green: #009296;
	--c-blue: #00276E;
	--c-violet: #662D91;
	--c-yellow: #ffd000;
	--c-beige: #F0EEE5;
	--top-h: 80px;
	--side: clamp(0.625rem, -1.356rem + 8.451vw, 6.25rem); /*10px-100px*/
	/*32px-16px*/

	/*375-1440*/
	--f12: clamp(0.675rem, 0.649rem + 0.113vw, 0.75rem); /*10.8px-12px*/
	--f14: clamp(0.788rem, 0.757rem + 0.131vw, 0.875rem); /*12.6px-14px*/
	--f16: clamp(0.9rem, 0.865rem + 0.15vw, 1rem); /*14.4px-16px*/
	--f18: clamp(1.013rem, 0.973rem + 0.169vw, 1.125rem); /*16.2px-18px*/
	--f20: clamp(1.125rem, 1.081rem + 0.188vw, 1.25rem); /*18px-20px*/
	--f22: clamp(1.238rem, 1.189rem + 0.207vw, 1.375rem); /*19.8px-22px*/
	--f24: clamp(1.2rem, 1.094rem + 0.451vw, 1.5rem); /*19.2px-24px*/
	--f28: clamp(1.4rem, 1.277rem + 0.526vw, 1.75rem); /*22.4px-28px*/
	--f32: clamp(1.6rem, 1.459rem + 0.601vw, 2rem); /*25.6px-32px*/
	--f40: clamp(2rem, 1.824rem + 0.751vw, 2.5rem); /*32px-40px*/
	--f48: clamp(2.4rem, 2.189rem + 0.901vw, 3rem); /*38.4px-48px*/
	--f56: clamp(2.8rem, 2.554rem + 1.052vw, 3.5rem); /*44.8px-56px*/
	
	--ss: clamp(0.125rem, 0.081rem + 0.188vw, 0.25rem); /*4px-2px*/
	--s1: clamp(0.25rem, 0.162rem + 0.376vw, 0.5rem); /*8px-4px*/
	--s2: clamp(0.5rem, 0.324rem + 0.751vw, 1rem); /*16px-8px*/
	--s3: clamp(0.75rem, 0.486rem + 1.127vw, 1.5rem); /*24px-12px*/
	--s4: clamp(1rem, 0.648rem + 1.502vw, 2rem); /*32px-16px*/
	--s5: clamp(1.25rem, 0.81rem + 1.878vw, 2.5rem); /*40px-20px*/
	--s6: clamp(1.5rem, 0.972rem + 2.254vw, 3rem); /*48px-24px*/
	--s7: clamp(1.75rem, 1.134rem + 2.629vw, 3.5rem); /*56px-28px*/
	--s8: clamp(2rem, 1.296rem + 3.005vw, 4rem); /*64px-32px*/
	--s9: clamp(2.25rem, 1.458rem + 3.38vw, 4.5rem); /*72px-36px*/
	--s10: clamp(2.5rem, 1.62rem + 3.756vw, 5rem); /*80px-40px*/
	--s11: clamp(2.75rem, 1.782rem + 4.131vw, 5.5rem); /*88px-44px*/
	--s12: clamp(3rem, 1.944rem + 4.507vw, 6rem); /*96px-48px*/
	--s13: clamp(3.25rem, 2.106rem + 4.883vw, 6.5rem); /*104px-52px*/
	--s14: clamp(3.5rem, 2.268rem + 5.258vw, 7rem); /*112px-56px*/
	--s15: clamp(3.75rem, 2.43rem + 5.634vw, 7.5rem); /*120px-60px*/
	--2-1: 2;
	--3-1: 3;
	--4-1: 4;
	--3-2: 3;
	
	/*SP*/
	@media (max-width: 800px) {
		--2-1: 1;
		--3-1: 2;
		--4-1: 2;
		--3-2: 2;
	}
	
	@media (max-width: 600px) {
		--3-1: 1;
		--4-1: 1;
	}
	
	
}

/* section{
	border: 5px solid green;
} */

.f14{font-size: var(--f14);}
.f60{font-size: var(--f60);}
.f21{font-size: var(--f21);}
.f30{font-size: var(--f30);}

.mt0 {
	margin-top: 0 !important;
}

.mts {
	margin-top: var(--ss) !important;
}

.mt1 {
	margin-top: var(--s1) !important;
}

.mt2 {
	margin-top: var(--s2) !important;
}

.mt3 {
	margin-top: var(--s3) !important;
}

.mt4 {
	margin-top: var(--s4) !important;
}

.mt5 {
	margin-top: var(--s5) !important;
}

.mt6 {
	margin-top: var(--s6) !important;
}

.mt7 {
	margin-top: var(--s7) !important;
}


.mt8 {
	margin-top: var(--s8) !important;
}

.mt9 {
	margin-top: var(--s9) !important;
}

.mt10 {
	margin-top: var(--s10) !important;
}

/*デフォルトマージン*/
.mt15,
.mt_def {
	margin-top: var(--s15) !important;
}

.mt20 {
	margin-top: var(--20) !important;
}


.mb0 {
	margin-bottom: 0 !important;
}

.mbs {
	margin-bottom: var(--ss) !important;
}

.mb1 {
	margin-bottom: var(--s1) !important;
}

.mb2 {
	margin-bottom: var(--s2) !important;
}

.mb3 {
	margin-bottom: var(--s3) !important;
}

.mb4 {
	margin-bottom: var(--s4) !important;
}

.mb5 {
	margin-bottom: var(--s5) !important;
}

.mb6 {
	margin-bottom: var(--s6) !important;
}

.mb7 {
	margin-bottom: var(--s7) !important;
}


.mb8 {
	margin-bottom: var(--s8) !important;
}

.mb9 {
	margin-bottom: var(--s9) !important;
}

.mb10 {
	margin-bottom: var(--s10) !important;
}

.mb15 {
	margin-bottom: var(--s15) !important;
}

.mb20 {
	margin-bottom: var(--20) !important;
}

.ml1 {
	margin-left: var(--s1) !important;
}

.ml2 {
	margin-left: var(--s2) !important;
}

.ml3 {
	margin-left: var(--s3) !important;
}



.large {
	font-size: 1.2em;
}

.larger {
	font-size: 1.6em;
}

.largest {
	font-size: 2em;
}

.small {
	font-size: 0.8em;
}

.smaller {
	font-size: 0.6em;
}

.smallest {
	font-size: 0.4em;
}

.al {
	text-align: left;
}

.ac {
	text-align: center;
}

.ar {
	text-align: right;
}

.r{
	border-radius: var(--s2);
}


/*SP*/
@media (max-width: 800px) {
	.pc_only{display: none;}
}

/* img.radius,
figure.radius img {
	border-radius: var(--s2);
} */

.bullets {
	display: grid;
	grid-template-columns: auto 1fr;
}

.bullets>* {
	display: grid;
	grid-template-columns: subgrid;
	grid-column: span 2;
	column-gap: .25em;
}

.bullet {
	display: grid;
	grid-template-columns: auto 1fr;
	column-gap: .25em;
}

.red {
	color: var(--c-red) !important;
}

.bold {
	font-weight: 600;
}

.scroll_x {
	padding-bottom: 20px;
	overflow-x: auto;
}

.tel {
	line-height: 1.3;
	font-family: "Inter", sans-serif;
	font-weight: 700;
}


[class^="icon-"]._turn45:before,
[class*=" icon-"]._turn45:before {
	transform: rotate(90deg);
}

.bg-lattice{
	background-image: linear-gradient(0deg, transparent calc(100% - 1px), #f0f0f0 calc(100% - 1px)),linear-gradient(90deg, transparent calc(100% - 1px), #f0f0f0 calc(100% - 1px));
	background-size: 25px 25px;
	background-repeat: repeat;
	background-position: center center;
	padding: var(--s7) var(--s15);
}

/* --------------------------------------------------
	Resetting default margin and padding
-------------------------------------------------- */

/* !HTML5 elements
---------------------------------------------------------- */

footer,
nav,
section,
aside,
article {
	display: block;
}

/* !Reseting
---------------------------------------------------------- */
* {
	box-sizing: border-box;
}

body {
	font-family: "Noto Sans JP", sans-serif;
	font-size: 1rem;
	line-height: 1.5;
	font-weight: 400;
	-webkit-text-size-adjust: none;
	font-feature-settings: "palt";
}


body,
div,
pre,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
form,
fieldset,
th,
td,
input,
a,
textarea,
select,
span,
nav,
section,
figure {
	margin: 0;
	padding: 0;
	font-weight: normal;
	line-height: 1.8em;
}

h1,
h2,
h3,
h4,
h5,
h6{
	font-weight: bold;
}

main h1{
	font-size: var(--f56);
	line-height: 1.5em;
}

main h2{
	font-size: var(--f48);
	line-height: 1.5em;
}

main h3{
	font-size: var(--f32);
	line-height: 1.5em;
}

main h4{
	font-size: var(--f24);
	line-height: 1.5em;
}

main h5{
	font-size: var(--f20);
	line-height: 1.5em;
}

input,
textarea,
select {
	margin: 0;
	font-size: 100%;
	appearance: none;
	-webkit-appearance: none;
	border: none;
	outline: none;
}

label {
	cursor: pointer;
}

table {
	border-collapse: collapse;
	border-spacing: 0;
	font-size: 100%;
}

fieldset,
img {
	border: 0;
}

address,
caption,
cite,
code,
dfn,
th,
var {
	font-style: normal;
	font-weight: normal;
}

a,
input {
	outline: none;
}

em {
	font-style: normal;
	display: inline-block;
}

figure {
	text-align: center;
	display: block;
}



/* modal
======================================================================================*/

.modal {
	display: none;
	position: fixed;
	z-index: 5000;
	left: 0;
	top: 0;
	height: 100dvh;
	width: 100%;
	overflow: auto;
	background-color: rgba(0, 0, 0, 0.5);
	backdrop-filter: blur(10px);
}

.modal .modal-box {
	background-color: #fff;
	max-width: 900px;
	width: 90%;
	max-height: 90dvh;
	animation-name: modalopen;
	animation-duration: 1s;
	padding: var(--s6);
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	max-height: 95dvh;
	/* overflow: scroll; */

	/* overflow-y: hidden; */
}

.modal ._inr {
	overflow: scroll;
	max-height: calc(95dvh - (var(--s6))*2);
}


.modalClose {
	position: absolute;
	top: var(--s1);
	right: var(--s1);
	width: var(--s5);
	height: var(--s5);
	cursor: pointer;
	/* background-color: #fff; */
}

.modalClose::before,
.modalClose::after {
	content: '';
	position: absolute;
	width: 100%;
	height: 2px;
	background-color: var(--c-red);
	top: 50%;
	right: 0;
	transform: rotate(45deg);
	transform-origin: center;
}

.modalClose::after {
	transform: rotate(-45deg);
}


/* ===================================================================================
top
====================================================================================== */

#top {
	text-align: center;
	line-height: 1.3;
	color: var(--c-red);
	background-image: url(../img/main.jpg);
	background-repeat: no-repeat;
	background-size: cover;
	color: #000000;
	padding-bottom: 30%;
	padding-left: var(--s5);
	padding-right: var(--s5);
	background-position: center;
	background-blend-mode: color;
	position: relative;
	aspect-ratio: 1400 / 856;
}

#top .inner{
	position: absolute;
	display: grid;
	grid-template-columns: .6fr 1fr;
	gap: var(--s2);
	align-items: center;
	top: 50%;
	transform: translateY(-50%);
}

#top div{
	max-width: 1500px;
	margin-inline: auto;
	min-width: 324px;
}

#top .photo img{
	width: 100%;
}

#top h2{
	font-size: var(--f40);
	line-height: 1.3em;
}

#top p{
	font-weight: normal;
}

#top .scroll{
	font-size: var(--f14);
	border: solid 2px #000000;
	padding: .2em;
	aspect-ratio: 1/1;
	border-radius: 100%;
	place-content: center;
	align-items: center;
	line-height: 1;
	width: 65px;
	font-weight: bold;
	margin-inline: auto;
}

#top .scroll span{
	font-size: 10px;
}

@media (max-width: 800px) {
	#top {
		background-image: url(../img/main-2.jpg);
		aspect-ratio: 	237/325;
	}
	
	#top .inner{
		grid-template-columns: 1fr;
		padding: 15% 0 0;
		top: 0%;
		transform: translateY(0%);
		position-area: top;
	}
	
	#top h2{
		text-align: center;
	}
	
	#top p{
		text-align: center;
	}
	
}


@media (max-width: 570px) {
	
	#top .inner{
		padding: 18% 0 0;
	}
	
	#top h2{
		font-size: var(--f32);
		text-align: center;
	}
	
	#top p{
		text-align: center;
		line-height: 1.3;
	}
	
	#top .scroll{
		display: none;
	}
}

/* =====================================================================
box_case
======================================================================== */
#box_case{
	margin: var(--s15) var(--s15) var(--s6);
}

#box_case ._red-line{
	padding: var(--s10) var(--s5) var(--s5);
	margin: 0 auto;
	max-width: 1500px;
	border: solid 1px var(--c-red);
	border-radius: var(--s3); 
	position: relative;
}

#box_case ._red-line::before{
	position: absolute;
	content: "クライアントケース事例";
	font-size: var(--f24);
	color: #ffffff;
	background-color: var(--c-red);
	padding: var(--s3);
	border-radius: var(--s2);
	top: 0;
	left: 50%;
	transform: translate(-50%, -50%);
}

#box_case .title_header{
	display: flex;
	vertical-align: middle;
	align-items: center;
	gap: var(--s2);
	flex-wrap: wrap;
	text-align: center;
	justify-content: center;
}

#box_case .title_header figure{
	width: 100px;
}

#box_case .title_header h1{
	font-size: var(--f48);
}

#box_case ._case figure{
	height: 100%;
}

#box_case ._case figure img{
	height: 100%;
	object-fit: cover;
}

#box_case ._case2{
	display: grid;
	grid-template-columns: repeat(var(--3-1), 1fr);
	gap: var(--s3);
}

#box_case ._case2 div{
	padding: var(--s2);
	background-color: #F3F3F3;
	border-radius: var(--s2);
	display: flex;
}

#box_case ._case2 div:nth-child(4),
#box_case ._case2 div:nth-child(7){
	background-color: #ffffff;
	transform: rotateY(180deg);
}

#box_case ._case2 .pc-human figure,
#box_case ._case2 .sp-human figure{
	width:  100px;
	margin-inline: auto;
	place-content: center;
}

#box_case ._case2 .pc-human img,
#box_case ._case2 .sp-human img{
	height: auto;
}

#box_case ._case2 .sp-human{
	display: none;
}


#box_case ._case2 div p{
	padding-bottom: var(--s1);
	display: inline-block;
	align-self: center;
}

#box_case ._case2 div h4{
	font-size: var(--f20);
}

.consultation{
	background: var(--c-red);
	color: #ffffff;
	position: relative;
	padding: var(--s10) var(--s15) var(--s6);
}

.consultation::before{
	content: "";
	background-color: #fff;
	clip-path: polygon(50% 18%, 46% 0, 54% 0);
	position: absolute;
	top: -1px;
	left: 0;
	width: 100%;
	height: 20vw;
	z-index: 1;
	max-height: 300px;
	min-height: 150px;
}


/*SP*/
@media (max-width: 850px) {
	#box_case .title_header figure{
		display: none;
	}
}


/*SP*/
@media (max-width: 800px) {
	#box_case ._case2 .pc-human{
		display: none;
	}
	
	#box_case ._case2 div:nth-child(7){
		display: block;
		transform: rotateY(0deg);
	}
}

#box_case ._case2 * + h4{
	margin-top: 1em;
}

/* =====================================================================
box_about
======================================================================== */
#box_about{
	margin-top: var(--s8);
	margin-bottom: var(--s10);
	padding-left: var(--s15);
	padding-right: var(--s15);
}
 
#box_about li{
	border: solid 2px var(--c-red);
	display: inline-block;
	padding: var(--s1) var(--s2);
	color: var(--c-red);
	font-weight: bold;
	border-radius: .5em;
}

/* =====================================================================
box_service
======================================================================== */

#box_service .inner p{
	font-size: var(--f20);
}

#box_service .details{
	margin-top: var(--s8);
	margin-bottom: var(--s10);
	padding-left: var(--s15);
	padding-right: var(--s15);
	max-width: 1500px;
	margin-inline: auto;
	display: grid;
	gap: var(--s8);
}

#box_service .details ._case{
	display: grid;
	grid-template-columns: 1fr .7fr;
	gap: var(--s7);
	background: #F3F3F3;
	padding: var(--s7);
}

#box_service .details h3{
	padding-bottom: var(--s3);
	border-bottom: solid 2px #ffffff;
	position: relative;
}

#box_service .details h3::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -2px;
	width: 20%;
	border-bottom: 2px solid var(--c-red);
}

#box_service .details ul li{
	text-indent: -1.3em;
	padding-left: 1em;
}

#box_service .details ul li::before {
	content: "○";
	margin-right: .3em;
}

#box_service .details figure{
	align-self: center;
}

@media (max-width: 800px) {	
	#box_service .inner{
		grid-template-columns: 1fr;
	}
	
	#box_service .details ._case{
		grid-template-columns: 1fr;
	}
}




/* ===================================================================================
box_merit
====================================================================================== */

#box_merit{
	background-color: #F6F6F6;
}

#box_merit .inner{
	background-image: url(../img/merit.jpg);
	aspect-ratio: 7 / 2;
	background-repeat: no-repeat;
	background-size: cover;
	color: #ffffff;
	border-radius: 0 0 var(--s10) var(--s10);
	display: flex;
	align-items:center;
	justify-content:center;
}

#box_merit .details{
	display: grid;
	grid-template-columns: repeat(var(--2-1),1fr);
	gap: var(--s5);
	margin-top: var(--s8);
	padding-bottom: var(--s10);
	padding-left: var(--s15);
	padding-right: var(--s15);
	max-width: 1500px;
	margin-inline: auto;
}

#box_merit .details ._photoes{
	background-color: #ffffff;
	padding: var(--s2);
}

#box_merit .details ._photoes img{
	border: solid 1px #000000;
}

#box_merit .details ._caption{
	padding-left: 1em;
	text-indent: -1em;
	line-height: 1.3em;
}

#box_merit .details ul li{
	text-indent: -.6em;
	padding-left: 1em;
	margin-bottom: var(--s1);
	line-height: 1.6em;
}

#box_merit .details ul li::before{
	content: "・";
	margin-right: .1em;
}

/* =====================================================================
box_flow
======================================================================== */

#box_flow .step{
	display: grid;
	grid-template-columns: repeat(var(--4-1),1fr);
	gap: var(--s2);
	margin-top: var(--s8);
	padding-bottom: var(--s10);
	padding-left: var(--s15);
	padding-right: var(--s15);
	max-width: 1500px;
	margin-inline: auto;
}

#box_flow .step ._num{
	border: solid 1px #000000;
	padding: var(--s3);
	position: relative;
	background: #ffffff;
}

#box_flow .step ._num:not(:nth-of-type(4))::before{
	position: absolute;
	content: "";
	top: 50%;
	right: 0;
	z-index: -1;
	width: var(--s3);
	height: 1px;
	background: #000000;
	transform: translateX(100%);
}

#box_flow .step ._num h2{
	color: #F1C235;
	font-size: var(--f56);
}

#box_flow .step ._num .small{
	text-indent: -1em;
	padding-left: 1em;
}

@media (max-width: 800px) {	
	#box_flow .step ._num:not(:nth-of-type(4))::before{
		display: none;
	}
}

@media (max-width: 600px) {
	#box_flow .step ._num:not(:nth-of-type(4))::before{
		display: block;
		top: 100%;
		right: 50%;
		width: 1px;
		height:  var(--s3);
	}
}


/* =====================================================================
box_question
======================================================================== */

#box_question .inner{
	padding-left: var(--s15);
	padding-right: var(--s15);
	max-width: 1500px;
	margin-inline: auto;
}

#box_question ._details{
	border: solid 1px #000000;
	padding: var(--s5);
}

#box_question ._details h4{
	padding-bottom: var(--s3);
	border-bottom: solid 1px #000000;
	display: grid;
	grid-template-columns: auto 1fr;
	gap: var(--s3);
	align-items: center;
}


#box_question ._details h4::before{
	content: url(../img/qa.svg);
	height: 40px;
}


/*******/

.js-animText {
	display: inline-block;
	/* display: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center; */
}

.js-animText.is-inview {
  --opacity: 1;
  --scale: 1;
}

.js-animText span {
  display: inline-block;
  transform: scale(var(--scale, 0));
  opacity: var(--opacity, 0);
  transition: opacity 0.4s cubic-bezier(0.77, 0, 0.175, 1), transform 0.4s cubic-bezier(0.39, 0.575, 0.565, 1);
  transition-delay: calc(0.06s * var(--char-index));
}

/* .visuallyHidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
} */
/**/



/* ===================================================================================
box_grid デフォルトは2-1
====================================================================================== */



#footer{
	border-top: 1px solid #fff;
	text-align: center;
	padding: var(--s5);
	padding-bottom: 130px;
	font-size: var(--f14);
}

#box_floats{
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
	height: auto;
	z-index: 100;
	text-align: right;
	display: flex;
	flex-direction: column;
	align-items: flex-end;
}

.bottom_btns{
	padding: var(--s2);
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--s1);
	width: 100%;
	height: auto;
	background-color: var(--c-red);
	position: relative;
	z-index: -3;
}

.bottom_btns .btn{
	height: 60px;
}

.bottom_btns .btn.-toi{
font-size: var(--s3);
}

.bottom_btns .btn.-tel ._large{
	font-size: var(--s4);
}

.bottom_btns .btn.-tel img{
	width: var(--s5);
}

._bt {
	cursor: pointer;
	margin-right: 5px;
	margin-bottom: 5px;
	width: 40px;
	height: 40px;
	display: grid;
	place-content: center;
	background-color: var(--c-red);
	color: #fff;
	border-radius: 100px;
	line-height: 1;
	transition: .5s all ease 0s;
	border: 1px solid #fff;
	font-weight: 500;
	font-size: var(--f12);
	opacity: 0;
}

#js-totop{
	opacity: 0;
}

#js-totop span{
	content:"";
	clip-path: polygon(0 100%, 50% 0%, 100% 100%);
	width: 1em;
	height: 0.5em;
	margin-block: 0.1em;
	background-color: #fff;
}

#js-totop:hover span{
	background-color: var(--c-red);
}

._bt:hover{
	border-color: var(--c-red);
	background-color: #fff;
	color: var(--c-red);
}


._bt.is-show.is-show,
#js-totop.is-show {
	opacity: 1;
}


.totop:hover::before{
	margin-top: -15px;
}
/* ===================================================================================
BUTTON
====================================================================================== */
.bt_st2{
  right: 2.3vw;
  z-index: 50;
  position: fixed;
  transition: 0.5s;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
}

.bt_st2 > *{
  background-color: var(--c-red);
  border: 1px solid #ffffff;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  padding: 1.5em 6% 1.5em 6%;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  border-radius: .5em;
}

.bt_st2 > *::after{
  font-family: oag;
  content:"";
  position: absolute;
  top: 50%;
  right: 1em;
  transform: translateY(-50%);
}

.bt_st2 > *[target="_blank"]::after{
  content:"\E806";
}

.bt_st2.modalOpen > *{
  background-color: #000;
  border-color: #000;
}


.bt_st2 > *:hover,
.bt_st2.modalOpen > *:hover{
  color: var(--c-red);
  background-color: #fff;
  border: 1px solid var(--c-red);
}

.bt_st2.modalOpen > *::after{
  content:"\E803";
}

.modal-box h3{
  font-size: var(--f-18-24);
  margin-bottom: 1em;
}

.modal-box ._exp{
  text-align: left;
  margin-top: 1em;
}

/*フッターまでスクロールしたらボタンを消す*/
.bt_st2 {
	opacity: 0; /* 最初は透明 */
	visibility: hidden; /* 画面上から見えないようにする */
	transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out; /* スムーズなアニメーション */
}

.bt_st2.is-hidden {
	opacity: 
	visibility: hidden;
}

.bt_st2:not(.is-hidden) {
	opacity: 1;
	visibility: visible;
}