body {
    margin: 0; padding: 0;
    font-family: 'Inter', system-ui, sans-serif;
    color: #ffffff;
    height: 100vh;
    display: flex; justify-content: center; align-items: center;
    overflow: hidden;
}
.fullscreen-bg {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    object-fit: cover; z-index: -2;
}
.bg-overlay {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(15, 23, 42, 0.75); /* 暗色半透明遮罩 */
    backdrop-filter: blur(8px); /* 现代机房高级模糊感 */
    z-index: -1;
}
.glass-container {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(16px);
    border-radius: 24px;
    padding: 3rem; text-align: center; width: 100%; max-width: 700px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
.logo { width: 80px; margin-bottom: 1rem; }
h1 { margin: 0; font-size: 2.2rem; font-weight: 700; }
h1 span { color: #0ea5e9; }
p { color: #94a3b8; font-size: 1rem; margin-bottom: 2.5rem; }

.dashboard { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: 2.5rem; }
.metric-box {
    background: rgba(0, 0, 0, 0.3); padding: 1.5rem; border-radius: 16px; flex: 1;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.label { display: block; font-size: 0.8rem; color: #64748b; letter-spacing: 2px; margin-bottom: 0.5rem; }
.value { display: block; font-size: 3rem; font-weight: 700; color: #f8fafc; }
.value.active { color: #38bdf8; text-shadow: 0 0 20px rgba(56, 189, 248, 0.5); }
.unit { display: block; color: #94a3b8; font-size: 1rem; }

.glow-on-hover {
    width: 200px; height: 60px; border: none; outline: none; color: #fff;
    background: #0ea5e9; cursor: pointer; position: relative; z-index: 0; border-radius: 30px;
    font-size: 1.2rem; font-weight: 700; letter-spacing: 1px; transition: 0.3s;
}
.glow-on-hover:hover { transform: scale(1.05); background: #0284c7; box-shadow: 0 0 30px #0284c7; }