:root{
  --bg-1:#06111f;
  --bg-2:#0a1628;
  --bg-3:#0d1c31;

  --glass:rgba(255,255,255,.25);
  --glass-strong:rgba(255,255,255,.35);
  --line:rgba(255,255,255,.35);

  --text:#0b1a2b;
  --muted:rgba(11,26,43,.7);
  --muted-2:rgba(11,26,43,.5);

  --blue-1:#8fd0ff;
  --blue-2:#4da3ff;
  --blue-3:#2f78ff;

  --shadow-lg:0 24px 80px rgba(0,0,0,.38);
  --shadow-md:0 16px 50px rgba(0,0,0,.28);
  --shadow-sm:0 8px 24px rgba(0,0,0,.2);

  --radius-xl:32px;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;

  --max:1200px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Hiragino Sans",
    "Yu Gothic UI",
    sans-serif;
  line-height:1.7;
  background:
    linear-gradient(180deg, #dff4ff 0%, #bfe8ff 40%, #a6dcff 100%);
  overflow-x:hidden;
}

img{
  display:block;
  max-width:100%;
}

a{
  color:inherit;
  text-decoration:none;
}

.wrap{
  width:min(calc(100% - 32px), var(--max));
  margin:0 auto;
}

.glass{
  background:
    linear-gradient(180deg, rgba(255,255,255,.13), rgba(255,255,255,.06));
  border:1px solid var(--line);
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(12px) saturate(130%);
  -webkit-backdrop-filter:blur(12px) saturate(130%);
}

.topbar{
  position:sticky;
  top:14px;
  z-index:100;
  margin:18px auto 24px;
  padding:14px 18px;
  border-radius:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}

.brand{
  display:flex;
  flex-direction:column;
  gap:3px;
  min-width:0;
}

.brand-logo{
  font-size:30px;
  line-height:1;
  font-weight:800;
  letter-spacing:-.05em;
}

.brand-sub{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.04em;
}

.brand{
  display:flex;
  align-items:center;
  min-width:0;
}

.brand-link{
  display:inline-flex;
  align-items:center;
  text-decoration:none;
}

.brand-mark{
  display:block;
  height:56px;
  width:auto;
  object-fit:contain;
}

.brand-logo,
.brand-sub{
  display:none;
}

.nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:10px;
  flex-wrap:wrap;
}

.nav a,
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 18px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.35);
  background:linear-gradient(180deg, rgba(255,255,255,.16), rgba(255,255,255,.06));
  color:var(--text);
  font-size:14px;
  font-weight:700;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.22),
    0 10px 30px rgba(0,0,0,.18);
  transition:.25s ease;
  cursor:pointer;
}

.nav a:hover,
.btn:hover{
  transform:translateY(-1px);
  border-color:rgba(255,255,255,.22);
}

.btn-primary{
  background:linear-gradient(180deg, #6ec1ff, #2f78ff);
  border-color:rgba(143,208,255,.28);
}

.btn-secondary{
  background:linear-gradient(180deg, rgba(255,255,255,.35), rgba(255,255,255,.05));
}

.hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:24px;
  margin-bottom:24px;
}

.hero-copy,
.hero-visual{
  padding:30px;
  border-radius:var(--radius-xl);
  min-height:640px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  color:var(--muted);
  font-size:13px;
  margin-bottom:18px;
}

.hero-copy{
  display:flex;
  flex-direction:column;
  justify-content:center;
}

h1{
  margin:0 0 18px;
  font-size:clamp(38px, 6vw, 72px);
  line-height:1.03;
  letter-spacing:-.055em;
}

.hero-lead{
  margin:0 0 24px;
  font-size:clamp(17px, 2vw, 21px);
  color:var(--muted);
  max-width:34em;
}

.hero-points{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:12px;
  margin:0 0 28px;
}

.hero-point{
  padding:14px 16px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:14px;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

.hero-visual{
  position:relative;
  overflow:hidden;
}

.hero-visual::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 18% 12%, rgba(143,208,255,.18), transparent 26%),
    radial-gradient(circle at 84% 6%, rgba(255,255,255,.12), transparent 18%);
  pointer-events:none;
}

.hero-stage{
  position:relative;
  height:100%;
  min-height:580px;
  border-radius:28px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.04);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25);
}

.hero-slide{
  background: rgba(255,255,255,.04);
  padding: 12px;
  border-radius: 16px;
  max-width: 85%;
  margin: 0 auto;
  display: block;
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:0;
  transform:scale(1.02);
  transition:opacity .8s ease, transform 1.2s ease;
}

.hero-slide.active{
  opacity:1;
  transform:scale(1);
}

.section{
  margin:22px 0;
}

.section-card{
  padding:30px;
  border-radius:var(--radius-xl);
}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:22px;
}

.section-head-left h2{
  margin:0 0 8px;
  font-size:clamp(30px, 4vw, 46px);
  line-height:1.08;
  letter-spacing:-.045em;
}

.section-head-left p{
  margin:0;
  color:var(--muted);
  max-width:44em;
}

.issues,
.features,
.showcases,
.process-grid{
  display:grid;
  gap:18px;
}

.issues{
  grid-template-columns:repeat(3, minmax(0,1fr));
}

.issue-card,
.feature-card,
.showcase-card,
.process-card,
.price-card{
  padding:18px;
  border-radius:24px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.05);
  box-shadow:var(--shadow-sm);
}

.issue-card img,
.showcase-card img{
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.04);
  margin-bottom:14px;
}

.issue-card h3,
.feature-card h3,
.showcase-card h3,
.process-card h3,
.price-card h3{
  margin:0 0 8px;
  font-size:22px;
  line-height:1.25;
  letter-spacing:-.03em;
}

.issue-card p,
.feature-card p,
.showcase-card p,
.process-card p,
.price-card p{
  margin:0;
  color:var(--muted);
  font-size:15px;
}

.features{
  grid-template-columns:repeat(3, minmax(0,1fr));
}

.feature-card{
  min-height:210px;
}

.feature-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  margin-bottom:14px;
  border-radius:14px;
  background:linear-gradient(180deg, rgba(143,208,255,.26), rgba(77,163,255,.16));
  border:1px solid rgba(143,208,255,.2);
  font-size:13px;
  font-weight:800;
  color:#dff3ff;
}

.showcases{
  grid-template-columns:repeat(4, minmax(0,1fr));
}

.showcase-card .meta{
  margin-top:10px;
  color:var(--muted-2);
  font-size:13px;
}

.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}

.compare-box{
  padding:22px;
  border-radius:24px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.05);
}

.compare-box h3{
  margin:0 0 14px;
  font-size:24px;
  letter-spacing:-.03em;
}

.compare-list{
  display:grid;
  gap:10px;
}

.compare-item{
  padding:12px 14px;
  border-radius:14px;
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:14px;
}

.pricing{
  display:grid;
  grid-template-columns:1fr;
  gap:18px;
}

.price-card{
  padding:24px;
}

.price-tag{
  display:inline-flex;
  padding:8px 12px;
  margin-bottom:14px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  color:#dff3ff;
  background:rgba(143,208,255,.12);
  border:1px solid rgba(143,208,255,.18);
}

.price-main{
  margin:8px 0 14px;
  font-size:clamp(28px, 4vw, 44px);
  font-weight:800;
  letter-spacing:-.05em;
  line-height:1.1;
}

.price-card ul{
  margin:16px 0 0;
  padding:0;
  list-style:none;
  display:grid;
  gap:10px;
}

.price-card li{
  padding:12px 14px;
  border-radius:14px;
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:14px;
}

.process-grid{
  grid-template-columns:repeat(4, minmax(0,1fr));
}

.process-step{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  margin-bottom:14px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  color:#dff3ff;
  font-weight:800;
  font-size:14px;
}

.cta-panel{
  position:relative;
  overflow:hidden;
  padding:30px;
  border-radius:var(--radius-xl);
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:24px;
  align-items:center;
}

.cta-panel::after{
  content:"";
  position:absolute;
  right:-100px;
  bottom:-100px;
  width:360px;
  height:360px;
  border-radius:999px;
  background:radial-gradient(circle, rgba(143,208,255,.18), transparent 65%);
  pointer-events:none;
}

.cta-copy h2{
  margin:0 0 12px;
  font-size:clamp(34px, 4vw, 52px);
  line-height:1.08;
  letter-spacing:-.05em;
}

.cta-copy p{
  margin:0 0 22px;
  color:var(--muted);
  max-width:34em;
}

.cta-figure{
  justify-self:end;
  width:min(420px, 100%);
  padding:14px;
  border-radius:28px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.05);
}

.cta-figure img{
  display:block;
  width:100%;
  height:auto;
  max-height:460px;
  object-fit:contain;
  object-position:center;
  border-radius:20px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.25);
}

footer{
  padding:28px 0 52px;
  text-align:center;
  color:var(--muted-2);
  font-size:13px;
}

@media (max-width: 1100px){
  .hero,
  .cta-panel{
    grid-template-columns:1fr;
  }

  .issues,
  .features,
  .showcases,
  .process-grid,
  .compare{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .hero-copy,
  .hero-visual{
    min-height:auto;
  }

  .cta-figure{
    justify-self:stretch;
  }
}

@media (max-width: 760px){
  .topbar{
    position:static;
    padding:16px;
    flex-direction:column;
    align-items:flex-start;
    gap:14px;
  }

  .nav{
    width:100%;
    display:grid;
    grid-template-columns:repeat(2, minmax(0,1fr));
    gap:10px;
    justify-content:stretch;
  }

  .nav a{
    width:100%;
    min-height:40px;
    padding:10px 12px;
    font-size:13px;
    gap:6px;
  }

  .hero-copy,
  .hero-visual,
  .section-card,
  .cta-panel{
    padding:22px;
  }

  .hero-points,
  .issues,
  .features,
  .showcases,
  .process-grid,
  .compare{
    grid-template-columns:1fr;
  }

  .hero-stage{
    min-height:360px;
  }

  .section-head{
    align-items:flex-start;
    flex-direction:column;
  }

  .hero-overlay{
    align-items:flex-start;
    flex-direction:column;
  }

  .cta-figure{
    justify-self:stretch;
  }
}

  
.back-to-top{
  position:fixed;
  right:16px;
  bottom:16px;
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:linear-gradient(180deg, rgba(255,255,255,.16), rgba(255,255,255,.25));
  color:var(--text);
  box-shadow:0 10px 24px rgba(0,0,0,.28);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  opacity:0;
  pointer-events:none;
  transform:translateY(8px);
  transition:.25s ease;
  z-index:120;
}

.back-to-top.is-visible{
  opacity:1;
  pointer-events:auto;
  transform:translateY(0);
}

@media (min-width: 761px){
  .back-to-top{
    right:20px;
    bottom:20px;
  }
}


/* ===== SKY CLOUD BACKGROUND ===== */

body::before,
body::after{
  content:"";
  position:fixed;
  top:0;
  left:0;
  width:200%;
  height:100%;
  pointer-events:none;
  z-index:0;
  background-repeat:repeat-x;
  background-size:contain;
  opacity:.35;
}

/* 雲1 */
body::before{
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,.9) 0%, rgba(255,255,255,0) 60%),
    radial-gradient(circle at 60% 40%, rgba(255,255,255,.7) 0%, rgba(255,255,255,0) 60%),
    radial-gradient(circle at 85% 20%, rgba(255,255,255,.8) 0%, rgba(255,255,255,0) 60%);
  animation:cloudMove1 120s linear infinite;
}

/* 雲2 */
body::after{
  background-image:
    radial-gradient(circle at 30% 60%, rgba(255,255,255,.6) 0%, rgba(255,255,255,0) 60%),
    radial-gradient(circle at 70% 70%, rgba(255,255,255,.5) 0%, rgba(255,255,255,0) 60%);
  animation:cloudMove2 180s linear infinite;
  opacity:.25;
}

/* アニメーション */
@keyframes cloudMove1{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}

@keyframes cloudMove2{
  from{transform:translateX(0);}
  to{transform:translateX(-30%);}
}

/* コンテンツを前面へ */
.wrap{
  position:relative;
  z-index:1;
}


.hero-copy h1{
  color:#0b1a2b;
  text-shadow:0 2px 10px rgba(255,255,255,.5);
}


.btn-primary:hover{
  background:linear-gradient(180deg, #8fd8ff, #3a8cff);
  transform:translateY(-2px);
}


/* ===== FIX: content always above clouds ===== */

.section,
.section-card,
.showcase-card{
  position:relative;
  z-index:2;
}