* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", sans-serif;
    background: #0f172a;
    color: #e5e7eb;
    overflow-x: hidden;
}

/* 粒子背景 */
canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px;
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    color: #38bdf8;
}

p {
    font-size: 1.2rem;
    opacity: 0.85;
}

/* 备案号 */
footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 12px;
    text-align: center;
    font-size: 14px;
    background: rgba(15, 23, 42, 0.85);
}

footer a {
    color: #94a3b8;
    text-decoration: none;
}

footer a:hover {
    color: #38bdf8;
}