:root{
  --bg:#070812;
  --fg:#eef1ff;
  --muted:rgba(238,241,255,.72);
  --line:rgba(255,255,255,.10);

  --a1:#6cf0ff;
  --a2:#7c5cff;
  --a3:#ff4bd1;
  --a4:#ffd36c;
  --a5:#7dff8b;
  --a6:#ff6a6a;
  --a7:#7aa7ff;
  --a8:#b07cff;
  --a9:#00ffd1;

  --wrap:1120px;

  /* mouse glow coords (JS updates) */
  --mx: 50vw;
  --my: 30vh;
  --glow: rgba(108,240,255,.14);
}

*{ box-sizing:border-box }
html{ scroll-behavior:smooth }
body{
  margin:0;
  font-family:"Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height:1.7;
}
body::before{
  content:"";
  position: fixed;
  inset: 0;
  pointer-events:none;
  background: radial-gradient(560px 560px at var(--mx) var(--my), var(--glow), transparent 60%);
  opacity: .9;
  mix-blend-mode: screen;
  z-index: 0;
}
main, header, .preload{ position: relative; z-index: 1; }

a{ color:inherit; text-decoration:none }
a:hover{ opacity:.92 }
.wrap{ width:min(var(--wrap), calc(100% - 40px)); margin:0 auto }
.skip{ position:absolute; left:-999px; top:0; background:#fff; color:#000; padding:10px 12px; border-radius:10px }
.skip:focus{ left:12px; top:12px; z-index:9999 }

/* ===== Preloader ===== */
.preload{
  position:fixed; inset:0; z-index:9999;
  display:grid; place-items:center;
  background: radial-gradient(900px 520px at 30% 40%, rgba(124,92,255,.18), transparent 60%),
              radial-gradient(900px 520px at 70% 55%, rgba(108,240,255,.14), transparent 60%),
              linear-gradient(180deg, #04040a 0%, #070812 100%);
  transition: opacity .5s ease, visibility .5s ease;
}
.preload.is-hidden{ opacity:0; visibility:hidden; pointer-events:none; }
.preload__inner{ text-align:center; padding:0 20px; }
.preload__mark{ font-weight:900; letter-spacing:.22em; font-size:28px; }
.preload__bar{
  width:min(380px, 80vw);
  height:10px;
  margin:14px auto 10px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  overflow:hidden;
}
.preload__bar span{
  display:block;
  height:100%;
  width:40%;
  background: linear-gradient(90deg, var(--a1), var(--a3), var(--a2));
  transform: translateX(-120%);
  animation: preloadBar 1.1s ease-in-out infinite;
}
.preload__text{ margin:0; color:var(--muted); font-size:13px; letter-spacing:.10em; }
@keyframes preloadBar{
  0%{ transform:translateX(-120%) }
  55%{ transform:translateX(120%) }
  100%{ transform:translateX(120%) }
}

/* ===== Topbar ===== */
.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(12px);
  background: rgba(7,8,18,.55);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar__inner{
  width:min(var(--wrap), calc(100% - 40px));
  margin:0 auto;
  display:flex; align-items:center; gap:18px;
  padding:14px 0;
}
.brand{ display:flex; align-items:center; gap:10px; min-width:240px }
.brand__dot{
  width:12px; height:12px; border-radius:999px;
  background: linear-gradient(135deg, var(--a1), var(--a3));
  box-shadow: 0 0 18px rgba(108,240,255,.25);
}
.brand__title{ display:block; font-weight:900; letter-spacing:.02em }
.brand__sub{ display:block; font-size:12px; color:var(--muted); margin-top:-2px }

.nav{ display:flex; gap:14px; flex:1; justify-content:center }
.nav a{
  font-size:13px; color:var(--muted);
  padding:8px 10px; border-radius:999px;
  border:1px solid transparent;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.nav a:hover{ color:var(--fg); background:rgba(255,255,255,.06); border-color:rgba(255,255,255,.12) }
.nav a.is-active{
  color: rgba(238,241,255,.95);
  border-color: rgba(108,240,255,.22);
  background: rgba(108,240,255,.08);
}
.cta{
  font-size:13px;
  padding:10px 14px; border-radius:999px;
  background: rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  white-space:nowrap;
}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height: 92vh;
  display:grid;
  place-items:center;
  overflow:hidden;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.hero__bg{
  position:absolute; inset:-20%;
  background:
    linear-gradient(180deg, rgba(4,4,10,.70) 0%, rgba(7,8,18,.65) 55%, rgba(5,6,16,.85) 100%),
    url("images/toppu.jpg") center / cover no-repeat;

  transform: translate3d(0,0,0);
  filter: saturate(1.05) contrast(1.05);
}
.wrap.hero__content{ position:relative; padding: 96px 0 64px; }

.kicker{
  margin:0 0 12px;
  font-size:12px;
  color:var(--muted);
  letter-spacing:.18em;
  text-transform:uppercase;
}
.hero__title{
  margin:0;
  font-weight:900;
  font-size: clamp(38px, 5.4vw, 72px);
  line-height:1.03;
  letter-spacing:-0.02em;
  text-shadow: 0 18px 60px rgba(0,0,0,.35);
  font-family: serif;
}
.hero__lead{ margin: 18px 0 0; color: rgba(238,241,255,.86); max-width: 72ch; }

.hero__actions{ display:flex; gap:12px; margin-top:22px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 16px; border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.08);
  font-weight:900; font-size:14px;
  transition: transform .18s ease, background .18s ease;
  will-change: transform;
}
.btn:hover{ transform: translateY(-1px); }
.btn--ghost{ background:transparent; border-color: rgba(255,255,255,.18); }

.hero__chips{ margin-top: 28px; display:flex; gap:10px; flex-wrap:wrap; }
.chip{
  padding:10px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  font-size:13px;
  font-weight:800;
}
.chip:hover{ background: rgba(255,255,255,.10); }

/* scroll hint */
.scrollhint{
  margin-top: 28px;
  display:inline-grid; place-items:center; gap:10px;
  color: rgba(255,255,255,.55);
  font-size:12px;
}
.scrollhint i{
  width:2px; height:28px; border-radius:999px;
  background: rgba(255,255,255,.28);
  position:relative; overflow:hidden;
}
.scrollhint i::after{
  content:"";
  position:absolute; left:0; right:0; top:-14px;
  height:14px;
  background: rgba(255,255,255,.9);
  animation: drop 1.2s infinite;
}
@keyframes drop{
  0%{ transform:translateY(-12px); opacity:0 }
  35%{ opacity:1 }
  100%{ transform:translateY(42px); opacity:0 }
}

/* ===== Ribbons ===== */
.ribbons{ position:absolute; inset:0; pointer-events:none; opacity:.9; }
.ribbon{
  position:absolute; left:-20%; width:140%;
  border-top:1px solid rgba(255,255,255,.10);
  border-bottom:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  transform: rotate(-8deg);
  overflow:hidden;
}
.r1{ top: 12%; }
.r2{ top: 64%; transform: rotate(10deg); background: rgba(0,0,0,.12); }

.ribbon__track{
  display:flex; gap:36px; white-space:nowrap;
  padding:10px 0;
  font-weight:900;
  letter-spacing:.12em;
  text-transform:uppercase;
  will-change: transform;
}
.r1 .ribbon__track{ color: rgba(108,240,255,.75); animation: marquee 20s linear infinite; }
.r2 .ribbon__track{ color: rgba(255,75,209,.60); animation: marqueeR 18s linear infinite; }
@keyframes marquee{ from{ transform:translateX(0)} to{ transform:translateX(-50%)} }
@keyframes marqueeR{ from{ transform:translateX(-50%)} to{ transform:translateX(0)} }

/* ===== Sections ===== */
.section{ padding: 78px 0; }
.sectionHead{ display:flex; justify-content:space-between; align-items:baseline; gap:14px; flex-wrap:wrap; }
.h2{ margin:0; font-size: clamp(22px, 2.2vw, 34px); letter-spacing:-0.01em; }
.sub{ margin:0; color:var(--muted); max-width: 72ch; }

/* Reveal animations java scriopt */
.js-reveal{
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s ease, transform .55s ease;
}
.js-reveal.is-in{
  opacity: 1;
  transform: translateY(0);
}

/* ===== Carousel ===== */
.carousel{
  margin-top: 18px;
  display:grid;
  grid-template-columns: 44px 1fr 44px;
  gap: 10px;
  align-items:center;
}
.carBtn{
  width:44px; height:44px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(238,241,255,.9);
  font-weight:900;
  cursor:pointer;
}
.carBtn:hover{ background: rgba(255,255,255,.10); }

.carTrack{
  display:flex;
  gap: 14px;
  overflow:auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 2px 0;
}
.carTrack::-webkit-scrollbar{ display:none; }

.slide{
  flex: 0 0 min(520px, 86vw);
  scroll-snap-align: start;
  padding: 18px 16px;
  border-radius: 18px;
  border:1px solid rgba(255,255,255,.12);
  background:
    radial-gradient(800px 260px at 20% 10%, rgba(108,240,255,.12), transparent 60%),
    radial-gradient(800px 260px at 90% 90%, rgba(255,75,209,.10), transparent 60%),
    rgba(255,255,255,.04);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.slide:hover{
  transform: translateY(-2px);
  border-color: rgba(255,255,255,.22);
  background: rgba(255,255,255,.06);
}
.slide__k{ display:block; font-weight:900; letter-spacing:.10em; color: rgba(238,241,255,.88); }
.slide__t{ display:block; margin-top:6px; color: var(--muted); }
.slide__m{ display:inline-block; margin-top:12px; font-weight:900; letter-spacing:.12em; font-size:12px; }

.dots{ margin-top: 10px; display:flex; gap:8px; justify-content:center; }
.dot{
  width: 8px; height: 8px; border-radius: 999px;
  background: rgba(255,255,255,.20);
}
.dot.is-on{ background: rgba(108,240,255,.70); }

/* ===== Portal ===== */
.portal{
  position:relative;
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
  overflow:hidden;
}
.portal__bg{
  position:absolute; inset:-10%;
  background:
    radial-gradient(900px 520px at 15% 25%, rgba(108,240,255,.10), transparent 60%),
    radial-gradient(900px 520px at 85% 35%, rgba(124,92,255,.10), transparent 60%),
    radial-gradient(900px 520px at 55% 85%, rgba(255,75,209,.08), transparent 60%);
  opacity:.9;
  transition: filter .25s ease, opacity .25s ease;
}
.portal .wrap{ position:relative; }

.portalList{ margin-top: 22px; border-top:1px solid rgba(255,255,255,.10); }
.portalItem{
  display:grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom:1px solid rgba(255,255,255,.10);
  transition: background .18s ease;
}
.portalItem:hover{ background: rgba(255,255,255,.03); }
.portalItem__no{ font-weight:900; letter-spacing:.16em; color: rgba(238,241,255,.64); }
.portalItem__title{ margin:0; font-size: 20px; font-weight: 900; }
.portalItem__desc{ margin: 6px 0 10px; color: var(--muted); }

.readmore{
  display:inline-flex; align-items:center; gap:10px;
  font-weight: 900;
  letter-spacing:.14em;
  font-size: 12px;
  text-transform: uppercase;
  position:relative;
}
.readmore::after{
  content:"";
  position:absolute; left:0; bottom:-6px;
  width:100%; height:2px;
  background: linear-gradient(90deg, rgba(108,240,255,.0), rgba(108,240,255,.9), rgba(255,75,209,.9), rgba(124,92,255,.0));
  transform: scaleX(.15);
  transform-origin:left;
  transition: transform .18s ease;
}
.portalItem:hover .readmore::after{ transform: scaleX(1); }
.portalItem:hover .readmore span{ transform: translateX(2px); }
.readmore span{ transition: transform .18s ease; }

.portalNote{
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  border-left: 2px solid rgba(255,255,255,.14);
  padding-left: 12px;
}

/* ===== Footer ===== */
.footer{ padding: 30px 0 40px; }
.footer__inner{
  display:flex; justify-content:space-between; align-items:center;
  gap:12px; flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);
  padding-top: 18px;
}
.footer__brand{ margin:0; color:var(--muted); font-size:13px; }
.footer__links{ display:flex; gap:14px; flex-wrap:wrap; }
.footer__links a{ color:var(--muted); font-size:13px; }
.footer__links a:hover{ color: rgba(238,241,255,.92); }

/* ===== Responsive ===== */
@media (max-width: 920px){
  .nav{ display:none; }
  .brand{ min-width:auto; }
  .portalItem{ grid-template-columns: 56px 1fr; }
  .sp{ display:inline; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .ribbon__track, .preload__bar span, .scrollhint i::after{ animation:none !important; }
  body::before{ display:none; }
  .js-reveal{ opacity:1; transform:none; transition:none; }
}

.downloadBtn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  padding: 12px 14px;
  border-radius: 999px;
  font-weight: 900;
  letter-spacing: .06em;
  border: 1px solid rgba(255,255,255,.16);
  background: linear-gradient(90deg, rgba(108,240,255,.16), rgba(255,75,209,.14), rgba(124,92,255,.16));
  color: rgba(238,241,255,.95);
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.downloadBtn:hover{
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.26);
  background: linear-gradient(90deg, rgba(108,240,255,.22), rgba(255,75,209,.20), rgba(124,92,255,.22));
}

.portalItem__title{
  white-space: nowrap;   
}
.portalItem__desc{
  white-space: normal;      
  overflow-wrap: normal;
}

.noteMuted{
  margin: 6px 0 0;
  color: rgba(238,241,255,.65);
  font-size: 13px;
}

.brand__logo{
  width: 38px;     
  height: 38px;
  object-fit: contain;
  display: block;
}