body {
    font-family: "Microsoft YaHei", sans-serif;
    background: #f8fafc;
    color: #333;
    padding: 40px;
    display: flex;
    justify-content: center;
}
.container {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    padding: 30px 40px;
    width: 100%;
    max-width: 600px;
    text-align: center;
}
h1 {
    margin-bottom: 25px;
    color: #0066cc;
}
form {
    margin-bottom: 25px;
}
input[type="text"] {
    padding: 10px;
    width: 70%;
    border: 1px solid #ccc;
    border-radius: 6px;
    outline: none;
    transition: 0.2s;
}
input[type="text"]:focus {
    border-color: #0066cc;
    box-shadow: 0 0 5px rgba(0,102,204,0.3);
}
button {
    background: #0066cc;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.3s;
}
button:hover {
    background: #004a99;
}
.result {
    margin-top: 20px;
    padding: 15px;
    background: #f0f8ff;
    border-radius: 10px;
    text-align: left;
}
.link-item {
    display: flex;
    align-items: center;
    margin: 10px 0;
}
.link-input {
    flex: 1;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background: #fafafa;
    color: #333;
}
.copy-btn {
    margin-left: 10px;
    padding: 8px 12px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.2s;
}
.copy-btn:hover {
    background: #1e7e34;
}
.copied {
    background: #ffc107 !important;
}