:root{
  --bg:#0b0b0d;
  --panel:#0f1116;
  --panel2:#0c0e13;
  --text:#f2f4f8;
  --muted:rgba(242,244,248,.72);
  --line:rgba(255,255,255,.12);
  --accent:#9fb9ff;
  --accent2:#3b6cff;
  --danger:#ff5a6a;

  --radius:16px;
  --shadow: 0 10px 40px rgba(0,0,0,.45);
  --shadow2: 0 8px 22px rgba(0,0,0,.35);
  --max: 980px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "SF Pro Display","SF Pro Text","Helvetica Neue", Arial, "Noto Sans JP", "Hiragino Sans", "Meiryo", sans-serif;
  color:var(--text);
  background: var(--bg);
}

/* Background – subtle, premium */
.bg{
  min-height:100%;
  background:
    radial-gradient(900px 520px at 25% -10%, rgba(32,92,190,.34), transparent 60%),
    radial-gradient(800px 480px at 80% 10%, rgba(90,140,255,.18), transparent 58%),
    linear-gradient(180deg, #081126 0%, #0b0b0d 38%, #0b0b0d 100%);
}

a{ color: inherit; text-decoration: none; }
a:hover{ opacity:.92; }

.container{
  width:100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 26px 18px 48px;
}

.topbar{
  position: sticky;
  top:0;
  z-index:10;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(7,12,22,.82), rgba(7,12,22,.35));
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.topbar-inner{
  max-width: var(--max);
  margin:0 auto;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  gap:12px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width: 0;
}
.logo{
  width:34px;
  height:34px;
  border-radius: 12px;
  background:
    radial-gradient(14px 14px at 30% 30%, rgba(255,255,255,.35), transparent 60%),
    linear-gradient(135deg, rgba(75,125,255,.95), rgba(15,35,72,.95));
  box-shadow: 0 10px 25px rgba(0,0,0,.45);
  border: 1px solid rgba(255,255,255,.14);
}
.brand h1{
  margin:0;
  font-size: 14px;
  letter-spacing: .4px;
  font-weight: 700;
  white-space: nowrap;
  overflow:hidden;
  text-overflow: ellipsis;
}
.brand .subtitle{
  display:block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

.spacer{ flex:1; }

.lang{
  display:flex;
  gap:8px;
  align-items:center;
}
.lang button{
  appearance:none;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .3px;
  cursor:pointer;
}
.lang button[aria-pressed="true"]{
  background: rgba(255,255,255,.92);
  color:#111318;
  border-color: rgba(255,255,255,.65);
}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  box-shadow: var(--shadow2);
}

.hero{
  padding: 18px 18px;
  display:flex;
  flex-direction: column;
  gap: 8px;
}
.hero .title{
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .4px;
}
.hero .desc{
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.grid{
  margin-top: 16px;
  display:grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 780px){
  .grid{ grid-template-columns: 1fr 1fr; }
}

.linkcard{
  padding: 16px 16px;
  display:flex;
  flex-direction: column;
  gap: 10px;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
.linkcard:hover{
  transform: translateY(-1px);
  border-color: rgba(159,185,255,.32);
  background: linear-gradient(180deg, rgba(159,185,255,.09), rgba(255,255,255,.03));
}
.linkcard .k{
  display:flex;
  align-items:center;
  gap: 10px;
}
.pill{
  font-size: 11px;
  font-weight: 800;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.22);
  color: rgba(242,244,248,.85);
}
.linkcard .h{
  font-weight: 800;
  letter-spacing: .2px;
}
.linkcard .p{
  color: var(--muted);
  line-height: 1.65;
  font-size: 13px;
}

.page{
  margin-top: 18px;
  padding: 18px;
}
.page h2{
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: .2px;
}
.page .meta{
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 14px;
}
.page h3{
  margin: 18px 0 8px;
  font-size: 14px;
  letter-spacing: .2px;
}
.page p, .page li{
  color: rgba(242,244,248,.88);
  line-height: 1.8;
  font-size: 13px;
}
.page ul{ margin: 8px 0 0 18px; }
.page .notice{
  margin-top: 14px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.24);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.footer{
  margin-top: 22px;
  padding: 16px 18px;
  color: var(--muted);
  font-size: 12px;
  display:flex;
  gap: 10px;
  justify-content: space-between;
  flex-wrap: wrap;
}
.footer a{
  color: rgba(242,244,248,.86);
  text-decoration: underline;
  text-decoration-color: rgba(242,244,248,.25);
}