body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", "Noto Sans", sans-serif;
    background: linear-gradient(135deg, #3a3a3a, #1f1f1f);
    color: #f0f0f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
}

.logo {
    margin-bottom: 20px;
}

.logo img {
    width: 120px;
    height: auto;
    animation: fadeIn 1.5s ease forwards;
    opacity: 0;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.card {
    background-color: rgba(255, 255, 255, 0.06);
    padding: 2em;
    border-radius: 1em;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    max-width: 500px;
    backdrop-filter: blur(14px) saturate(120%);
    -webkit-backdrop-filter: blur(14px) saturate(120%);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

h1 {
    font-size: 1.8em;
    margin-bottom: 0.5em;
    color: #ffffff;
}

p {
    font-size: 1.1em;
    margin-bottom: 1em;
    color: #dddddd;
}

.note {
    font-size: 0.9em;
    opacity: 0.7;
}

a {
    color: #cfcfcf;
    text-decoration: underline;
}

.spinner {
    margin: 20px auto;
    width: 48px;
    height: 48px;
    border: 5px solid rgba(255, 255, 255, 0.2);
    border-top: 5px solid #cccccc;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.button {
    margin-top: 1em;
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid #aaa;
    border-radius: 5px;
    padding: 0.5em 1em;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s ease, border 0.3s ease;
}

.button:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: #fff;
}

.cancel-link {
    margin-top: 0.8em;
    font-size: 0.95em;
    color: #cccccc;
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.3s ease;
}

.cancel-link:hover {
    color: #ffffff;
}

.site-name {
    font-weight: bold;
    font-size: 1.1em;
    margin-top: 0.5em;
    color: #f0f0f0;
}

.button {
    margin-top: 1.8em; /* 原为1em，加大间距 */
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid #aaa;
    border-radius: 5px;
    padding: 0.5em 1em;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s ease, border 0.3s ease;
}