*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: PingFang SC, Microsoft YaHei, Helvetica, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #2d3748;
    min-height: 100vh;
    padding: 45px 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.page-header {
    text-align: center;
    margin-bottom: 64px;
}

.title {
    font-size: 36px;
    letter-spacing: 5px;
    color: #1a202c;
    font-weight: 600;
}

.subtitle {
    color: #718096;
    margin-top: 12px;
    font-size: 16px;
}

.link-wrap {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 26px;
}

.pan-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 34px 26px;
    text-decoration: none;
    transition: all 0.28s ease;
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
}

.pan-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.11);
    border-color: #2563eb;
}

.card-name {
    font-size: 20px;
    color: #1a202c;
    font-weight: 500;
}

.card-tip {
    margin-top: 9px;
    font-size: 13px;
    color: #8898aa;
}

.footer {
    margin-top: 90px;
    text-align: center;
    color: #a0aec0;
    font-size: 14px;
}

.admin-entry {
    color: #2563eb;
    margin-left: 16px;
    text-decoration: none;
}
.admin-entry:hover {
    text-decoration: underline;
}

/* 后台样式 */
.login-box, .manage-box {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}
input {
    background: #f7fafc;
    border: 1px solid #cbd5e0;
    color: #2d3748;
}
input:focus {
    outline: 0;
    border-color: #2563eb;
}
button, .btn {
    background: #2563eb;
    color: #fff;
    border: none;
}
button:hover, .btn:hover {
    background: #1d4ed8;
}
.btn-del {
    background: #dc2626;
}
.btn-del:hover {
    background: #b91c1c;
}
table th {
    background: #f7fafc;
    color: #2d3748;
    border-color:#e2e8f0;
}
table td {
    color:#2d3748;
    border-color:#e2e8f0;
}
.err {
    color:#dc2626;
}