:root{
  --bg: #0b1020;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.10);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --border: rgba(255,255,255,.14);
  --accent: #7dd3fc;
  --accent2:#a78bfa;
  --good:#34d399;
  --warn:#fbbf24;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --radius2: 28px;
  --max: 1080px;
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 15% 10%, rgba(125,211,252,.20), transparent 60%),
    radial-gradient(900px 700px at 90% 15%, rgba(167,139,250,.18), transparent 60%),
    radial-gradient(1000px 900px at 50% 110%, rgba(52,211,153,.10), transparent 55%),
    var(--bg);
  line-height: 1.65;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration: underline; text-decoration-thickness:2px; }

.container{ max-width: var(--max); margin:0 auto; padding: 0 18px; }

/* Header */
header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11,16,32,.65);
  border-bottom: 1px solid var(--border);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 0;
  gap: 12px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 220px;
}
.logo{
  width: 38px; height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(125,211,252,.9), rgba(167,139,250,.9));
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.25);
}
.brand-title{ display:flex; flex-direction:column; line-height:1.1; }
.brand-title strong{ font-size: 14px; letter-spacing:.04em; }
.brand-title span{ font-size: 12px; color: var(--muted); }

/* Desktop nav */
nav[aria-label="サイト内メニュー"] ul{
  list-style:none;
  display:flex;
  gap: 14px;
  padding:0;
  margin:0;
  flex-wrap:wrap;
  justify-content:flex-end;
}
nav[aria-label="サイト内メニュー"] a{
  display:inline-flex;
  align-items:center;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 13px;
}
nav[aria-label="サイト内メニュー"] a:hover{
  border-color: var(--border);
  background: rgba(255,255,255,.05);
  color: var(--text);
  text-decoration:none;
}
nav[aria-label="サイト内メニュー"] a[aria-current="page"]{
  border-color: rgba(125,211,252,.35);
  background: rgba(125,211,252,.10);
  color: var(--text);
}

/* CTA buttons */
.cta{ display:inline-flex; align-items:center; gap:10px; white-space:nowrap; }
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
  box-shadow: 0 8px 20px rgba(0,0,0,.18);
  text-decoration:none;
}
.btn:hover{ background: rgba(255,255,255,.10); text-decoration:none; }
.btn-primary{
  border-color: rgba(125,211,252,.35);
  background: linear-gradient(135deg, rgba(125,211,252,.22), rgba(167,139,250,.18));
}
.btn-primary:hover{
  background: linear-gradient(135deg, rgba(125,211,252,.30), rgba(167,139,250,.24));
}

/* Mobile nav */
.mobile-toggle{
  display:none;
  width: 42px; height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: var(--text);
  box-shadow: 0 8px 20px rgba(0,0,0,.18);
  cursor:pointer;
}
.mobile-toggle:hover{ background: rgba(255,255,255,.10); }
.mobile-toggle .bar{
  display:block;
  width: 18px;
  height: 2px;
  background: rgba(255,255,255,.85);
  margin: 4px auto;
  border-radius: 999px;
}

.mobile-panel{
  display:none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  backdrop-filter: blur(6px);
  z-index: 60;
}
.mobile-panel[aria-hidden="false"]{ display:block; }

.mobile-drawer{
  position:absolute;
  top: 10px;
  right: 10px;
  left: 10px;
  max-width: 540px;
  margin-left:auto;
  border: 1px solid var(--border);
  background: rgba(11,16,32,.92);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow:hidden;
}
.mobile-drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.mobile-close{
  width: 40px; height: 40px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: var(--text);
  cursor:pointer;
}
.mobile-close:hover{ background: rgba(255,255,255,.10); }

.mobile-nav{
  padding: 10px;
}
.mobile-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid transparent;
  color: var(--text);
  text-decoration:none;
}
.mobile-nav a:hover{
  border-color: var(--border);
  background: rgba(255,255,255,.06);
}
.mobile-nav a[aria-current="page"]{
  border-color: rgba(125,211,252,.35);
  background: rgba(125,211,252,.10);
}

/* Main content */
main{ padding-bottom: 10px; }

.hero{ padding: 54px 0 26px; }
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  align-items: stretch;
}
.hero-card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius2);
  padding: 22px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero-card:before{
  content:"";
  position:absolute; inset:-120px -80px auto auto;
  width: 320px; height: 320px;
  background: radial-gradient(circle at 30% 30%, rgba(125,211,252,.35), transparent 60%),
              radial-gradient(circle at 70% 60%, rgba(167,139,250,.28), transparent 60%);
  transform: rotate(20deg);
  pointer-events:none;
}

.kicker{
  display:inline-flex;
  gap:10px;
  align-items:center;
  font-size:12px;
  color: var(--muted);
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  padding: 8px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.dot{
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--good);
  box-shadow: 0 0 0 6px rgba(52,211,153,.12);
}

h1{
  margin:0 0 10px;
  font-size: clamp(24px, 3.5vw, 40px);
  letter-spacing:.02em;
  line-height: 1.15;
}
.lead{
  margin:0 0 18px;
  color: var(--muted);
  font-size: 14px;
  max-width: 62ch;
}
.hero-actions{ display:flex; gap:10px; flex-wrap:wrap; margin-top:10px; }

.side{ display:grid; gap:12px; }
.mini{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius);
  padding: 16px;
}
.mini h3{ margin:0 0 8px; font-size:14px; }
.mini p{ margin:0; color: var(--muted); font-size:13px; }

.pill{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
  flex-wrap: wrap;
}
.pill b{ color: var(--text); }

section{ padding: 26px 0; }
.section-title{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  margin-bottom: 12px;
}
.section-title h2{ margin:0; font-size:18px; letter-spacing:.02em; }
.section-title p{ margin:0; color: var(--muted); font-size: 13px; }

.grid-2{ display:grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius);
  padding: 16px;
}
.card h3{ margin:0 0 8px; font-size:14px; }
.card p{ margin:0; color: var(--muted); font-size:13px; }

.features{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.feat{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius);
  padding: 16px;
  min-height: 120px;
}
.feat .icon{
  width: 34px; height: 34px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  margin-bottom: 10px;
  font-size: 16px;
}
.feat h3{ margin:0 0 6px; font-size:14px; }
.feat p{ margin:0; color: var(--muted); font-size:13px; }

/* Tables */
table{
  width: 100%;
  border-collapse: collapse;
  overflow:hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
}
th, td{
  padding: 12px 12px;
  border-bottom: 1px solid rgba(255,255,255,.10);
  font-size: 13px;
  vertical-align: top;
}
th{
  text-align:left;
  color: var(--muted);
  font-weight:700;
  background: rgba(255,255,255,.05);
}
tr:last-child td{ border-bottom: 0; }

.tag{
  display:inline-flex;
  align-items:center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.05);
  color: var(--muted);
  font-size:12px;
  gap: 6px;
}
.tag.good{ border-color: rgba(52,211,153,.28); color: rgba(207,250,229,.92); }
.tag.warn{ border-color: rgba(251,191,36,.28); color: rgba(254,243,199,.92); }

/* Steps */
.steps{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.step{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius);
  padding: 16px;
}
.step .n{
  display:inline-flex;
  width: 28px; height: 28px;
  border-radius: 10px;
  align-items:center; justify-content:center;
  background: rgba(125,211,252,.18);
  border: 1px solid rgba(125,211,252,.28);
  margin-bottom: 10px;
  font-weight:800;
}
.step h3{ margin:0 0 6px; font-size:14px; }
.step p{ margin:0; color: var(--muted); font-size:13px; }

/* Form */
label{ display:block; }
.input, textarea{
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  font: inherit;
}
textarea{ resize: vertical; }

/* Footer */
footer{
  border-top: 1px solid var(--border);
  margin-top: 20px;
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 12px;
}
.foot{
  display:flex;
  gap: 12px;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items:center;
}

/* Responsive */
@media (max-width: 920px){
  .brand{ min-width:auto; }
  .hero-grid{ grid-template-columns: 1fr; }
  .features{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  nav[aria-label="サイト内メニュー"]{ display:none; }
  .cta{ display:none; }
  .mobile-toggle{ display:inline-flex; flex-direction:column; justify-content:center; }
}