:root{
  --bg0:#020615;
  --bg1:#06112a;
  --panel:rgba(255,255,255,0.04);
  --panel2:rgba(0,0,0,0.22);
  --line:rgba(255,255,255,0.10);

  --text:#e9eef9;
  --muted:rgba(233,238,249,0.68);

  --accent:#21c7de;
  --accent2:#0aa9c0;

  --serif:"Noto Serif JP", serif;
  --sans:"Noto Sans JP", system-ui, -apple-system, sans-serif;

  --radius:10px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family:var(--sans);
  color:var(--text);
  background: linear-gradient(180deg, var(--bg0), var(--bg1));
  line-height:1.85;
}

a{ color:inherit; text-decoration:none; }
.container{ width:min(1200px, 92vw); margin:0 auto; }

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(2,6,21,0.72);
  backdrop-filter: blur(10px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.site-header.is-scrolled{
  background:rgba(2,6,21,0.88);
  border-bottom:1px solid rgba(255,255,255,0.10);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 0;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand-icon{ color:var(--accent); font-size:16px; }
.brand-text{ display:flex; gap:14px; align-items:baseline; }
.brand-main{ font-family:var(--serif); font-weight:700; letter-spacing:.4px; }
.brand-sub{ color:var(--accent); font-family:var(--serif); font-weight:600; letter-spacing:.2px; }

.nav{
  display:flex; gap:46px; align-items:center;
  font-size:13px; color:rgba(233,238,249,0.78);
}
.nav a:hover{ color:var(--text); }

/* Background */
.bg{
  position:fixed;
  inset:0;
  z-index:-1;
}
.bg-img{
  position:absolute; inset:0;
  background-size:cover;
  background-position:center;
  transform: scale(1.02);
  filter: saturate(.95) contrast(1.02);
}
.bg-dim{
  position:absolute; inset:0;
  background: radial-gradient(900px 500px at 35% 35%, rgba(0,0,0,0.05), rgba(0,0,0,0.70)),
              linear-gradient(180deg, rgba(2,6,21,0.35), rgba(2,6,21,0.82));
}
.bg-blur{
  position:absolute; inset:0;
  backdrop-filter: blur(10px);
}

/* Layout */
.page{
    grid-template-columns: 1fr;
    gap:28px;              /* ← gapを減らす */
    padding:28px 0 60px;   /* ← 余白を減らす */
  }


/* Left */
.back{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:rgba(233,238,249,0.70);
  font-size:12px;
  letter-spacing:1px;
}
.back:hover{ color:rgba(233,238,249,0.88); }

.head{ margin-top:18px; }

.accent-line{
  width:64px; height:3px;
  background:var(--accent);
  margin:18px 0 14px;
}

.plan-title{
  font-family:var(--serif);
  font-size:54px;
  letter-spacing:1px;
  margin:0;
}

.price-row{
  display:flex;
  align-items:baseline;
  gap:16px;
  margin-top:8px;
}
.price{
  font-family:var(--serif);
  font-size:44px;
  margin:0;
  color:var(--accent);
  letter-spacing:1px;
}
.tax{
  margin:0;
  font-size:12px;
  letter-spacing:1px;
  color:rgba(233,238,249,0.55);
}

.desc{
  margin-top:18px;
  display:grid;
  grid-template-columns: 3px 1fr;
  gap:16px;
  max-width: 62ch;
}
.desc-bar{ background:rgba(255,255,255,0.14); }
.desc p{
  margin:0;
  color:rgba(233,238,249,0.76);
  font-size:14px;
}

/* Recommended */
.recommend{
  margin-top:34px;
  background: rgba(255,255,255,0.02);
  border:1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding:18px 18px;
  max-width: 720px;
}
.recommend-badge{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--accent);
  font-weight:800;
  letter-spacing:1px;
  font-size:12px;
}
.recommend-badge .star{
  width:22px; height:22px;
  display:grid; place-items:center;
  background: rgba(33,199,222,0.12);
  border:1px solid rgba(33,199,222,0.25);
  border-radius: 999px;
}
.recommend-text{
  margin:10px 0 0;
  color:rgba(233,238,249,0.74);
  font-size:14px;
}

/* Right aside */
.aside{
  position:sticky;
  top:110px;
}
.detail-card{
  background: rgba(0,0,0,0.22);
  border:1px solid rgba(255,255,255,0.10);
  border-radius: 14px;
  padding:22px;
  box-shadow: 0 18px 40px rgba(0,0,0,0.45);
}
.detail-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:14px;
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.detail-head h2{
  margin:0;
  font-family:var(--serif);
  font-size:18px;
  letter-spacing:.6px;
}
.mini-icon{
  width:34px; height:34px;
  display:grid; place-items:center;
  border:1px solid rgba(33,199,222,0.20);
  border-radius: 10px;
  color:var(--accent);
  background: rgba(33,199,222,0.06);
}

.checks{
  margin:18px 0 0;
  padding:0;
  list-style:none;
  display:grid;
  gap:12px;
}
.checks li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  color:rgba(233,238,249,0.78);
  font-size:14px;
}
.check{
  width:22px; height:22px;
  display:grid; place-items:center;
  border-radius:999px;
  background: rgba(33,199,222,0.12);
  border:1px solid rgba(33,199,222,0.22);
  color:var(--accent);
  flex: 0 0 auto;
}

.detail-divider{
  height:1px;
  background:rgba(255,255,255,0.08);
  margin:18px 0 16px;
}

.cta{
  display:flex;
  align-items:center;
  justify-content:center;
  height:52px;
  border-radius: 10px;
  border:1px solid rgba(33,199,222,0.55);
  color:rgba(233,238,249,0.92);
  letter-spacing:1px;
  font-weight:800;
  background: rgba(0,0,0,0.18);
}
.cta:hover{
  border-color: rgba(33,199,222,0.75);
  background: rgba(33,199,222,0.08);
}
.cta-note{
  margin:10px 0 0;
  text-align:center;
  color:rgba(233,238,249,0.55);
  font-size:12px;
}

/* =========================
   Hamburger Menu (plan-detail)
   ========================= */

.menu-toggle{
  display:none;
  width:30px;
  height:22px;
  position:relative;
  background:none;
  border:none;
  cursor:pointer;
}
.menu-toggle span{
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background:#fff;
  transition:.3s ease;
}
.menu-toggle span:nth-child(1){ top:0; }
.menu-toggle span:nth-child(2){ top:10px; }
.menu-toggle span:nth-child(3){ bottom:0; }

.menu-toggle.active span:nth-child(1){ transform:rotate(45deg); top:10px; }
.menu-toggle.active span:nth-child(2){ opacity:0; }
.menu-toggle.active span:nth-child(3){ transform:rotate(-45deg); bottom:10px; }

@media (max-width: 1000px){
.page{
    grid-template-columns: 1fr;
    gap:28px;              /* ← gapを減らす */
    padding:28px 0 60px;   /* ← 余白を減らす */
  }

  .aside{
    position:static;
  }

  .main{
    padding-right:0;       /* ← 横の詰まり防止 */
  }

  .detail-card{
    padding:18px;          /* ← カード内余白を減らす */
  }

  .plan-title{ font-size:36px; }
  .price{ font-size:32px; }
}

  .menu-toggle{
    display:block;
    z-index:200;
  }

  .nav{
    display:flex;                 /* ← 重要 */
    flex-direction:column;        /* ← 重要 */
    position:fixed;
    top:0;
    right:-100%;
    width:260px;
    height:100vh;
    background:#020615;
    padding:110px 30px;
    gap:28px;
    transition:right .35s ease;
    box-shadow:-10px 0 40px rgba(0,0,0,.6);
    z-index:150;
  }

  .nav.open{
    right:0;
  }
@media (max-width: 600px){
  .container{
    width:92vw;
  }

  .desc{
    grid-template-columns: 2px 1fr; /* ← barを細く */
  }

  .recommend{
    padding:14px;
  }

  .checks li{
    font-size:13px;
  }
}