@charset "utf-8";
/* レイアウトのためのCSS */

body{
    background:#ffffff;
    font-family:'Noto Sans JP', "メイリオ", sans-serif;
	color: #333;
	font-size:1rem;
	line-height:1.85;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	-webkit-text-size-adjust: 100%; 
	word-wrap: break-word;
}

@media screen and (max-width:768px) {
body{
	font-size:0.8rem;
	}
}

ul{
	margin:0;
	padding: 0;
	list-style: none;
}

a{
	color: #333;
    outline: none;
}

a:hover,
a:active{
	text-decoration: none;
}


/*数字カウント*/

.progressbar-text{
    font-size:5rem;
   font-family: 'Noto Sans JP';
}

.progressbar-text span{
    font-size:2rem;
}

/*横幅が768px以下になった際の指定*/
@media only screen and (max-width:768px) {
.progressbar-text{
    font-size:3rem;
}
.progressbar-text span{
    font-size:1.3rem;
}

}


/* heading */

.heading-block{
    position: absolute;
	z-index: 2;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	text-align: center;
}

.heading-block h1{
    font-size: 12vw;
	letter-spacing: 0.2em;
	color: #fff;
    line-height: 1;
    font-family: 'Noto Sans JP';
}

.heading-block p{
    font-size: 4vw;
	letter-spacing: 0.2em;
	color: #fff;
}
/*横幅が768px以下になった際の指定*/
@media only screen and (max-width:768px) {
  .heading-block h1{
    font-size: 8em;
    }
.heading-block p{
    font-size: 3em;
    }
}

/* sns icon */
#sns-icon img{
    width: 40px;
    /* 影を分かりやすく（白背景でも沈まないように） */
    filter: drop-shadow(0 6px 10px rgba(0,0,0,0.75));
}

#sns-icon a:hover img{
    /* 明るい水色に変化（SVGをフィルターで色変換） */
    filter:
        drop-shadow(0 8px 14px rgba(0,0,0,0.85))
        brightness(0) saturate(100%)
        invert(84%) sepia(23%) saturate(640%) hue-rotate(155deg) brightness(120%) contrast(110%);
    transition: filter 0.2s ease;
}

#sns-icon a img{
    transition: filter 0.2s ease;
}


#sns-icon{
    position: absolute;
    right:20px;
    top:45%;
}

#sns-icon li{
     margin:0 0 15px 0;   
}

/* copyright */

small{
    position: absolute;
    left:20px;
    top:40%;
    color: #fff;
    letter-spacing: 0.1em;
    line-height: 1;
    -ms-writing-mode: tb-rl;
    -webkit-writing-mode: vertical-rl;
    writing-mode: vertical-rl;

    font-size: 2em;
    /* 影を強めに（読みやすさ優先） */
    text-shadow: 0 10px 22px rgba(0,0,0,0.95);
    filter: drop-shadow(0 6px 10px rgba(0,0,0,0.9));
}

/* about */

.about-section{
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 24px 24px;
    scroll-margin-top: 48px;
    opacity: 1;
    transform: translateY(0);
    transition: opacity .45s ease, transform .45s ease;
}

body.appear .about-section.delayScroll > *{
    opacity: 0;
}

.about-section.is-hidden{
    display: none;
}

.about-section.is-filtered-out{
    opacity: 0;
    transform: translateY(28px);
    pointer-events: none;
}

.about-heading{
    max-width: 760px;
    margin-bottom: 28px;
}

.about-label{
    display: inline-block;
    margin-bottom: 14px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(88,182,211,0.12);
    color: #2b7c95;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.about-section h2{
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.08em;
    line-height: 1.2;
    margin-bottom: 14px;
}

.about-lead{
    font-size: 1.05rem;
    line-height: 1.9;
    color: #4b4b4b;
    max-width: 38em;
}

.about-content{
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding: 36px;
    border: 4px solid #FFD3B6;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(255,255,255,0.96), rgba(255,255,255,0.88));
    box-shadow: 0 22px 44px rgba(0,0,0,0.08);
}

.about-intro,
.about-tool{
    display: flex;
    align-items: flex-start;
    gap: 32px;
}

.about-intro img,
.about-tool img{
    width: min(320px, 100%);
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 18px;
    box-sizing: border-box;
    box-shadow: 0 18px 32px rgba(0,0,0,0.12);
    flex-shrink: 0;
}

.about-intro img{
    border: 0;
}

.about-tool img{
    border: 4px solid #FFD3B6;
}

.about-text{
    flex: 1;
    min-width: 0;
}

.about-toggle{
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 28px;
    padding: 14px 24px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, #2b7c95, #58b6d3);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    cursor: pointer;
    box-shadow: 0 14px 24px rgba(43,124,149,0.24);
    transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}

.about-toggle::after{
    content: "";
    width: 10px;
    height: 10px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    transition: transform .35s ease;
}

.about-toggle:hover{
    transform: translateY(-2px);
    box-shadow: 0 18px 28px rgba(43,124,149,0.3);
    filter: brightness(1.04);
}

.about-toggle:focus-visible{
    outline: 3px solid rgba(88,182,211,0.28);
    outline-offset: 4px;
}

.about-toggle.is-open::after{
    transform: rotate(-135deg) translate(-1px, 1px);
}

.about-tools-panel{
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-18px);
    transition: grid-template-rows .5s ease, opacity .35s ease, transform .5s ease, visibility 0s linear .5s;
}

.about-tools-panel.is-open{
    grid-template-rows: 1fr;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition-delay: 0s;
}

.about-tools{
    display: grid;
    gap: 24px;
    min-height: 0;
    overflow: hidden;
}

.about-tool{
    padding: 28px;
    border-radius: 24px;
    background: rgba(88,182,211,0.08);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .35s ease, transform .45s ease;
}

.about-tools-panel.is-open .about-tool{
    opacity: 1;
    transform: translateY(0);
}

.about-tools-panel.is-open .about-tool:nth-child(2){
    transition-delay: .08s;
}

.about-tool-text{
    flex: 1;
    min-width: 0;
}

.about-tool h3{
    margin-bottom: 16px;
    font-size: 1.4rem;
    letter-spacing: 0.06em;
}

.about-tool li + li{
    margin-top: 10px;
}

.about-text p{
    flex: 1;
    font-size: 1rem;
}

.about-text p + p{
    margin-top: 16px;
}

@media only screen and (max-width:768px) {
.about-section{
    padding: 36px 16px 16px;
    scroll-margin-top: 24px;
}

.about-heading{
    margin-bottom: 20px;
}

.about-label{
    margin-bottom: 12px;
}

.about-lead{
    font-size: 0.95rem;
}

.about-content{
    gap: 24px;
    padding: 24px;
}

.about-toggle{
    margin-top: 24px;
}

.about-intro,
.about-tool{
    flex-direction: column;
    gap: 24px;
}

.about-intro img,
.about-tool img{
    width: 100%;
    max-width: 360px;
}

.about-tool{
    padding: 20px;
}
}