* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, sans-serif;
}
/* 登录页渐变背景 */
body.login-body {
    background: linear-gradient(135deg, #e8edff, #d0d9f7);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
/* 远程页渐变背景 */
body.remote-body {
    background: linear-gradient(135deg, #7b61ff, #5a40e0);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.card {
    background: #ffffff;
    width: 420px;
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.remote-box {
    background: white;
    width: 480px;
    padding: 40px 32px;
    border-radius: 12px;
    text-align: center;
}
.lock-icon {
    width: 80px;
    height: 80px;
    background: #6366f1;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 36px;
}
.page {
    display: none;
}
.page.active {
    display: block;
}
.title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #111;
}
.switch-tip {
    font-size: 15px;
    color: #666;
    margin-bottom: 32px;
}
.switch-btn {
    color: #2563eb;
    cursor: pointer;
    text-decoration: none;
}
.form-item {
    margin-bottom: 20px;
}
.form-label {
    display: block;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #222;
}
.form-input {
    width: 100%;
    height: 56px;
    padding: 0 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: border 0.2s;
}
.form-input:focus {
    border-color: #2563eb;
}
.checkbox-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
}
.checkbox-wrap input {
    width: 18px;
    height: 18px;
}
.submit-btn {
    width: 100%;
    height: 56px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.submit-btn:hover {
    background: #1d4ed8;
}
.btn {
    width: 100%;
    height: 52px;
    background: #6366f1;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 18px;
    margin-top: 10px;
    cursor: pointer;
}
.tip-text {
    margin-top: 16px;
    font-size: 14px;
    color: red;
    text-align: center;
}
.footer-tip {
    margin-top: 30px;
    font-size: 13px;
    color: #777;
}