/* ── Jonathan XI Homepage ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --text:#e2e8f0;
  --text-muted:#94a3b8;
  --accent:#60a5fa;
  --card-bg:rgba(8,12,24,0.55);
  --card-border:rgba(100,116,139,0.15);
  --card-hover:rgba(15,23,42,0.85);
  --glow-blue:rgba(96,165,250,0.12);
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:#000;
  color:var(--text);
  min-height:100vh;
  overflow:hidden;
}

#galaxy{
  position:fixed;
  top:0;left:0;
  width:100%;height:100%;
  z-index:0;
}

#earth{
  position:fixed;
  top:0;left:0;
  width:100%;height:100%;
  z-index:1;
}

/* ── 导航按钮（星球入口，默认隐藏） ── */
.sat-nav{
  position:fixed;
  top:calc(4vh + 64px);
  left:50%;
  transform:translateX(-50%);
  z-index:3;
  display:none;
  gap:20px;
  flex-wrap:wrap;
  justify-content:center;
}

.sat-nav.visible{
  display:flex;
}

.sat-btn{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  text-decoration:none;
  pointer-events:auto;
  transition:all 0.25s ease;
}

.sat-sphere{
  width:64px;
  height:64px;
  border-radius:50%;
  background:radial-gradient(circle at 35% 30%, rgba(40,80,180,0.50), rgba(8,12,24,0.85));
  border:1px solid rgba(100,140,200,0.20);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:28px;
  transition:all 0.30s ease;
  box-shadow:0 0 10px rgba(40,100,220,0.08);
}

.sat-btn:hover .sat-sphere{
  border-color:rgba(96,165,250,0.45);
  box-shadow:0 0 24px rgba(96,165,250,0.20), inset 0 0 12px rgba(96,165,250,0.06);
  transform:scale(1.08);
}

.sat-label{
  font-size:11px;
  color:rgba(148,163,184,0.55);
  letter-spacing:0.5px;
  text-align:center;
  line-height:1.2;
  transition:color 0.25s ease;
}

.sat-btn:hover .sat-label{
  color:rgba(96,165,250,0.70);
}

/* ── 标题（点击切换卫星导航） ── */
.title-top{
  position:fixed;
  top:4vh;
  left:50%;
  transform:translateX(-50%);
  z-index:3;
  font-size:28px;
  font-weight:200;
  letter-spacing:4px;
  text-transform:uppercase;
  color:rgba(226,232,240,0.85);
  text-shadow:
    0 0 20px rgba(150,180,255,0.2),
    0 0 60px rgba(150,180,255,0.08);
  cursor:pointer;
  pointer-events:auto;
  user-select:none;
  transition:text-shadow 0.3s ease;
}

.title-top:hover{
  text-shadow:
    0 0 30px rgba(150,180,255,0.35),
    0 0 80px rgba(150,180,255,0.12);
}

/* ── 底部版权 ── */
footer{
  position:fixed;
  bottom:24px;
  left:0;
  width:100%;
  text-align:center;
  z-index:3;
  pointer-events:none;
}

footer p{
  font-size:10px;
  color:rgba(148,163,184,0.4);
  letter-spacing:1px;
}

.version{
  font-size:8px;
  color:rgba(148,163,184,0.2);
  letter-spacing:1px;
  margin-top:4px;
  font-family:monospace;
}

/* ── 备案号（同一行） ── */
.bei-an{
  margin-top:3px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}

.bei-an a{
  font-size:9px;
  color:rgba(148,163,184,0.35);
  text-decoration:none;
  letter-spacing:1px;
  pointer-events:auto;
  transition:color 0.2s ease;
}

.bei-an a:hover{
  color:rgba(148,163,184,0.7);
  text-decoration:underline;
}

.bei-an-icon{
  display:inline-block;
  vertical-align:middle;
  margin-bottom:1px;
}

/* ── 响应式 ── */
@media(max-width:600px){
  .title-top{font-size:22px;letter-spacing:3px;top:3vh}
  .sat-nav{top:calc(3vh + 52px);gap:14px}
  .sat-sphere{width:52px;height:52px;font-size:22px}
  .sat-label{font-size:10px}
}