body {
    font-family: 'Arial', sans-serif;
    background: #1a0b2e; /* 深紫星空色，参考主站 */
    color: #fff;
    margin: 0;
    padding: 0;
}

.cosmic-bg {
    background-image: url('/static/saturn-bg.webp'); /* 你放入的背景图 */
    background-size: cover;
    background-position: center;
    min-height: 100vh;
    padding: 20px;
    text-align: center;
}

h1 {
    font-size: 2.5em;
    color: #d8b9ff; /* 浅紫，参考主站 */
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.calculator-form {
    margin: 20px auto;
    max-width: 400px;
}

.calculator-form input[type="date"] {
    padding: 10px;
    font-size: 1em;
    border: 2px solid #d8b9ff;
    border-radius: 5px;
    background: #2a1b4a;
    color: #fff;
}

.calculator-form button {
    padding: 10px 20px;
    font-size: 1em;
    background: #d8b9ff;
    color: #1a0b2e;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.calculator-form button:hover {
    background: #fff;
}

.result {
    margin: 20px auto;
    max-width: 600px;
    background: rgba(42, 27, 74, 0.8); /* 半透紫，参考主站 */
    padding: 20px;
    border-radius: 10px;
}

.result h2 {
    color: #fff;
    font-size: 1.8em;
}

.guides {
    list-style: none;
    padding: 0;
}

.guides li {
    margin: 10px 0;
}

.guides a, .amazon-link {
    color: #d8b9ff;
    text-decoration: none;
    font-weight: bold;
}

.guides a:hover, .amazon-link:hover {
    color: #fff;
    text-decoration: underline;
}

header nav {
    background: #1a0b2e;
    padding: 10px;
    text-align: center;
}

header nav a {
    color: #d8b9ff;
    margin: 0 15px;
    text-decoration: none;
}

header nav a:hover {
    color: #fff;
}

footer {
    text-align: center;
    padding: 10px;
    background: #1a0b2e;
}