body {
    background: #f7f7f7;
    color: #222;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 500px;
    margin: 40px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    padding: 32px 24px;
}
h1 {
    font-size: 1.4rem;
    margin-bottom: 18px;
    text-align: center;
    font-weight: 600;
}
label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}
input[type="file"] {
    margin-bottom: 18px;
    width: 100%;
}
button {
    background: #222;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 10px 18px;
    font-size: 1rem;
    cursor: pointer;
    margin-bottom: 24px;
    width: 100%;
}
button:disabled {
    background: #aaa;
    cursor: not-allowed;
}
.result {
    margin-bottom: 32px;
}
.result h2 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-weight: 600;
}
ul {
    background: #f2f2f2;
    border-radius: 4px;
    padding: 10px 16px;
    margin: 0 0 18px 0;
    list-style: none;
    font-size: 0.98rem;
}
li {
    margin-bottom: 4px;
    word-break: break-all;
}
ul li a {
    text-decoration: none;
}
.footer {
    text-align: center;
    color: #888;
    font-size: 0.9rem;
    margin-top: 24px;
}