@charset "utf-8";

/* ==========================================================================
   TOP — sticky stack (PC + SP / Figma ISAIPLUS_0728)
   fade / parallax off — layout only
   ========================================================================== */

#contents {
position: relative;
}

#VISUAL {
position: sticky;
top: 0;
z-index: 1;
height: 100vh;
height: 100svh;
overflow: hidden;
background-color: #1a1a1a;
}
#VISUAL .image {
position: absolute;
inset: 0;
opacity: 0;
}
#VISUAL .image picture,
.linkCard .bg picture {
display: block;
width: 100%;
height: 100%;
}
#VISUAL .image img {
width: 100%;
height: 100%;
object-fit: cover;
transform: none;
}
#VISUAL .hero-video {
position: absolute;
inset: 0;
z-index: 1;
pointer-events: none;
overflow: hidden;
}
#VISUAL .hero-video .video-js,
#VISUAL .hero-video .vjs-16-9,
#VISUAL .hero-video .vjs-fluid,
#VISUAL .hero-video .vjs-fill {
position: absolute !important;
inset: 0;
width: 100% !important;
height: 100% !important;
padding-top: 0 !important;
transform: none !important;
}
#VISUAL .hero-video .vjs-tech,
#VISUAL .hero-video video {
object-fit: cover;
width: 100%;
height: 100%;
transform: none !important;
}
#VISUAL .hero-video .vjs-control-bar,
#VISUAL .hero-video .vjs-big-play-button,
#VISUAL .hero-video .vjs-loading-spinner,
#VISUAL .hero-video .vjs-error-display,
#VISUAL .hero-video .vjs-modal-dialog,
#VISUAL .hero-video .vjs-poster,
#VISUAL .hero-video .vjs-text-track-display,
#VISUAL .hero-video .vjs-dock,
#VISUAL .hero-video .vjs-overlay {
display: none !important;
}
#VISUAL .logo {
position: absolute;
z-index: 2;
left: calc(181 * var(--sp));
top: 50%;
transform: translateY(-50%);
width: calc(200 * var(--sp));
opacity: 0;
}
#VISUAL .logo img {
width: 100%;
height: auto;
}
#VISUAL .scroll-hint {
position: absolute;
z-index: 2;
right: calc(18 * var(--sp));
top: auto;
bottom: calc(40 * var(--sp));
display: flex;
flex-direction: column;
align-items: center;
gap: calc(8 * var(--sp));
color: #fff;
pointer-events: none;
opacity: 0;
}
#VISUAL .scroll-hint span {
font-family: "Zalando Sans Expanded", "Oswald", sans-serif;
font-size: calc(17 * var(--sp));
font-weight: 400;
letter-spacing: 0;
writing-mode: vertical-rl;
}
#VISUAL .scroll-hint::after {
content: '';
display: block;
width: 1px;
height: calc(54 * var(--sp));
background: #fff;
clip-path: inset(0 0 100% 0);
}

#CONCEPT {
position: sticky;
top: 0;
z-index: 2;
height: 100vh;
height: 100svh;
background: linear-gradient(
	180deg,
	rgba(0, 0, 0, 0) 0%,
	rgba(0, 0, 0, .6) 42.308%,
	#000 100%
);
color: #fff;
pointer-events: none;
}
#CONCEPT .cont {
pointer-events: auto;
display: flex;
flex-direction: column;
justify-content: flex-start;
height: 100%;
padding: calc(193 * var(--sp)) calc(54 * var(--sp)) 0;
width: 100%;
max-width: none;
}
#CONCEPT h2 {
margin-bottom: calc(21 * var(--sp));
font-size: calc(20 * var(--sp));
font-weight: 700;
font-family: 'A1 Mincho', serif;
letter-spacing: .15em;
line-height: 2;
white-space: nowrap;
}
#CONCEPT .lead {
font-family: 'Koburina Gothic W3 JIS2004', sans-serif;
font-size: calc(14 * var(--sp));
font-weight: 300;
line-height: calc(34 * var(--sp));
letter-spacing: .16em;
max-width: calc(300 * var(--sp));
}

.linkCard {
position: sticky;
top: 0;
height: 100vh;
height: 100svh;
overflow: hidden;
}
#GALLERY { z-index: 3; }
#DESIGN { z-index: 4; }
#PERFORMANCE { z-index: 5; }
.linkCard .card-link {
display: block;
position: relative;
height: 100%;
color: #fff;
}
.linkCard .bg {
position: absolute;
inset: 0;
z-index: 0;
}
.linkCard .bg img {
width: 100%;
height: 100%;
object-fit: cover;
}
.linkCard .bg::after {
content: '';
position: absolute;
inset: 0;
background: rgba(0, 0, 0, .5);
}
#GALLERY .bg::after {
background: rgba(0, 0, 0, .5);
}
.linkCard .cont {
position: relative;
z-index: 1;
display: flex;
align-items: center;
height: 100%;
width: 100%;
margin: 0;
padding: calc(80 * var(--sp)) calc(54 * var(--sp)) calc(80 * var(--sp)) calc(54 * var(--sp));
}
.linkCard .txt {
padding-bottom: calc(5 * var(--sp));
max-width: auto;
border-bottom: solid 1px #fff;
}
.linkCard .num {
display: block;
margin-bottom: calc(8 * var(--sp));
font-family: "Zalando Sans Expanded", "Oswald", sans-serif;
font-size: calc(14 * var(--sp));
font-weight: 400;
color: #fff;
}
.linkCard h3 {
margin-bottom: calc(13 * var(--sp));
font-family: "Zalando Sans Expanded", "Oswald", sans-serif;
font-size: calc(30 * var(--sp));
font-weight: 600;
line-height: 1.2;
width: calc(296 * var(--sp));
}
.linkCard p {
margin-bottom: calc(89 * var(--sp));
font-size: calc(14 * var(--sp));
font-weight: 300;
line-height: calc(28 * var(--sp));
color: #fff;
width: calc(296 * var(--sp));
white-space: nowrap;
}
.linkCard .card-link,
.linkCard .card-link:hover,
.linkCard .more-link {
color: #fff;
text-decoration: none;
}

#CATALOG {
position: relative;
z-index: 6;
width: 100%;
}

@media screen and (min-width: 768px) {
#VISUAL .logo {
left: auto;
right: 98px;
top: 50%;
transform: translateY(-50%);
width: 266px;
}
#VISUAL .scroll-hint {
right: 16px;
top: auto;
bottom: 80px;
}

#CONCEPT .cont {
justify-content: flex-start;
padding: 140px 0 160px 280px;
width: 1280px;
margin: 0 auto;
}
#CONCEPT h2 {
margin-bottom: 50px;
font-size: 26px;
letter-spacing: .15em;
line-height: 2;
}
#CONCEPT .lead {
line-height: 44px;
}

.linkCard .cont {
width: 1280px;
margin: 0 auto;
padding: 40px 54px 40px 194px;
}
.linkCard .txt {
padding-bottom: 0;
border-bottom: none;
}
#GALLERY .bg::after {
background: rgba(0, 0, 0, .6);
}
}

/* hero intro + scroll reveal */
#VISUAL.is-hero-ready .image {
transition: opacity 1.4s ease;
opacity: 1;
}
#VISUAL.is-hero-ready .logo {
transition: opacity 1.15s ease .25s;
opacity: 1;
}
#VISUAL.is-hero-copy .scroll-hint {
transition: opacity 1s ease;
opacity: 1;
}
#VISUAL.is-hero-copy .scroll-hint::after {
animation: scrollHintLine 2.2s cubic-bezier(.4, 0, .2, 1) infinite;
}

#CONCEPT .lead.reveal {
transition-delay: .35s;
}

@keyframes scrollHintLine {
0% {
clip-path: inset(0 0 100% 0);
}
40% {
clip-path: inset(0 0 0 0);
}
55% {
clip-path: inset(0 0 0 0);
}
100% {
clip-path: inset(100% 0 0 0);
}
}

@media (prefers-reduced-motion: reduce) {
#VISUAL .image,
#VISUAL .logo,
#VISUAL .scroll-hint,
#VISUAL.is-hero-ready .image,
#VISUAL.is-hero-ready .logo,
#VISUAL.is-hero-copy .scroll-hint,
.page-top .reveal,
.page-top .reveal-fade {
opacity: 1;
transition: none;
}
#VISUAL .hero-video {
display: none;
}
#VISUAL .scroll-hint::after,
#VISUAL.is-hero-copy .scroll-hint::after {
clip-path: none;
animation: none;
}
}