:root{
  --bg: #f6fbff;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: rgba(17,24,39,.08);
  --shadow: 0 10px 30px rgba(17,24,39,.08);
  --radius: 18px;
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: linear-gradient(180deg, var(--bg), #ffffff);
}

a{ color: inherit; text-underline-offset: 3px; }
a:hover{ opacity:.86; }

.container{
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 18px 42px;
}

.header{
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.7);
  border-bottom: 1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 14px 18px;
  z-index: 10;
}

.brand{
  font-weight: 800;
  letter-spacing: .2px;
  text-decoration: none;
}

.nav a{
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
}
.nav a[aria-current="page"]{
  border-color: var(--border);
  background: rgba(17,24,39,.03);
}

.hero{
  padding-top: 26px;
}

.pill{
  display:inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.8);
  color: var(--muted);
  font-size: 12px;
}

.title{
  font-size: 44px;
  margin: 12px 0 10px;
  line-height: 1.05;
}

.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
}

.cta{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.button{
  display:inline-block;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.9);
  text-decoration:none;
}
.button.primary{
  border-color: rgba(17,24,39,.12);
  box-shadow: var(--shadow);
}

.card{
  background: rgba(255,255,255,.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.doc{
  background: rgba(255,255,255,.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.doc h1{ margin-top: 6px; }
.doc h2{ margin-top: 22px; }
.doc ul{ padding-left: 20px; }
.muted{ color: var(--muted); }

.hr{
  border: none;
  border-top: 1px solid var(--border);
  margin: 20px 0 12px;
}

.footer{
  padding: 20px 18px 30px;
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,.7);
}