* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    height: 100%;
}
.sso-container {
    display: flex;
    flex-direction: row-reverse;
    height: 100vh;
}
.left-panel {
    flex: 1;
    background: #fff;
    padding: 60px 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.sso-form-wrapper {
    width: 100%;
    max-width: 800px;
}
.right-panel {
    width: 40%;
    flex-shrink: 0;
    background: url('https://www.fpvone.cn/assets/img/userbg.png') no-repeat center center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.brand-logo {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    letter-spacing: 8px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}
.brand-slogan {
    color: #fff;
    font-size: 24px;
    margin-top: 20px;
    letter-spacing: 12px;
}
.input-field {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s;
}
.input-field:focus {
    border-color: #00b4aa;
}
.btn-primary {
    width: 100%;
    padding: 14px;
    background: #2d4a5e;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}
.btn-primary:hover {
    background: #1d3a4e;
}
.btn-primary:disabled {
    background: #8a9ba8;
    cursor: not-allowed;
}
.btn-outline {
    width: 100%;
    padding: 14px;
    background: #fff;
    color: #666;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}
.btn-outline:hover {
    border-color: #00b4aa;
    color: #00b4aa;
}
.btn-wechat {
    width: 100%;
    padding: 14px;
    background: #07c160;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.3s;
}
.btn-wechat:hover {
    background: #06ad56;
}
.checkbox-custom {
    width: 16px;
    height: 16px;
}
.agreement-text {
    line-height: 1.2rem;
}
.link {
    color: #00b4aa;
    text-decoration: none;
}
.link:hover {
    text-decoration: underline;
}
.tab-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 14px;
    color: #666;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}
.tab-btn.active {
    color: #00b4aa;
    border-bottom-color: #00b4aa;
}
.tab-btn .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ccc;
    transition: background 0.3s;
}
.tab-btn.active .dot {
    background: #00b4aa;
}
@media (max-width: 900px) {
    .right-panel {
        display: none;
    }
    .left-panel {
        max-width: 100%;
        padding: 40px;
    }
}