/* ── Supply Chain 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","PingFang SC","Microsoft YaHei",sans-serif;
  background:#000;
  color:var(--text);
  min-height:100vh;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
}

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

/* ── 顶部 ── */
.top-bar{
  position:fixed;
  top:4vh;
  left:50%;
  transform:translateX(-50%);
  z-index:3;
  text-align:center;
  pointer-events:none;
}

.top-title{
  font-size:28px;
  font-weight:200;
  letter-spacing:4px;
  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);
  display:block;
}

.top-subtitle{
  font-size:11px;
  letter-spacing:6px;
  color:rgba(148,163,184,0.35);
  margin-top:4px;
  text-transform:uppercase;
  display:block;
}

/* ── 卡片容器 ── */
.cards{
  position:relative;
  z-index:2;
  display:flex;
  gap:32px;
  justify-content:center;
  align-items:center;
  flex-wrap:wrap;
  padding:20px;
}

/* ── 卡片 ── */
.card{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  width:300px;
  min-height:280px;
  padding:36px 28px;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:16px;
  text-decoration:none;
  color:var(--text);
  cursor:pointer;
  transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  position:relative;
  overflow:hidden;
}

.card::before{
  content:'';
  position:absolute;
  inset:0;
  border-radius:16px;
  opacity:0;
  transition:opacity 0.3s ease;
  background:radial-gradient(600px circle at var(--mouse-x,50%) var(--mouse-y,50%), rgba(96,165,250,0.06), transparent 60%);
}

.card:hover{
  background:var(--card-hover);
  border-color:rgba(96,165,250,0.3);
  transform:translateY(-4px) scale(1.02);
  box-shadow:
    0 8px 40px rgba(96,165,250,0.08),
    0 0 80px rgba(96,165,250,0.04);
}

.card:hover::before{
  opacity:1;
}

/* ── 卡片图标 ── */
.card-icon{
  width:72px;
  height:72px;
  color:var(--accent);
  filter:drop-shadow(0 0 12px rgba(96,165,250,0.25));
  transition:transform 0.3s ease;
}

.card:hover .card-icon{
  transform:scale(1.08);
}

.card-icon svg{
  width:100%;
  height:100%;
}

/* ── 卡片文字 ── */
.card-title{
  font-size:20px;
  font-weight:500;
  letter-spacing:2px;
  text-align:center;
  line-height:1.3;
}

.card-desc{
  font-size:13px;
  color:var(--text-muted);
  text-align:center;
  line-height:1.5;
  max-width:240px;
}

/* ── 建设中徽章 ── */
.card-coming{
  pointer-events:none;
  opacity:0.7;
}

.card-coming .card-title::after{
  display:none;
}

.card-badge{
  position:absolute;
  top:16px;
  right:16px;
  font-size:10px;
  letter-spacing:1px;
  padding:4px 10px;
  border-radius:20px;
  background:rgba(246,211,101,0.12);
  border:1px solid rgba(246,211,101,0.25);
  color:#f6d365;
  pointer-events:none;
}

/* ── 底部 - 变淡渐隐文字 ── */
footer{
  position:fixed;
  bottom:20px;
  left:0;
  width:100%;
  text-align:center;
  z-index:3;
  pointer-events:none;
}

footer p{
  font-size:10px;
  color:rgba(148,163,184,0.35);
  letter-spacing:1px;
}

.version{
  font-size:8px;
  color:rgba(148,163,184,0.18);
  letter-spacing:1px;
  margin-top:3px;
  font-family:monospace;
}

.bei-an{
  margin-top:3px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}

.bei-an a{
  font-size:9px;
  color:rgba(148,163,184,0.3);
  text-decoration:none;
  letter-spacing:1px;
  pointer-events:auto;
  transition:color 0.2s ease;
}

.bei-an a:hover{
  color:rgba(148,163,184,0.6);
  text-decoration:underline;
}

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

/* ── 响应式 ── */
@media(max-width:700px){
  .cards{flex-direction:column;gap:20px}
  .card{width:280px;min-height:250px;padding:28px 20px}
  .card-icon{width:60px;height:60px}
  .card-title{font-size:18px}
  .top-title{font-size:22px;letter-spacing:3px}
}