/* Modern Login Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif !important;
    background: #f8f9fa !important;
    min-height: 100vh !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 20px;
    margin: 0 !important;
}

.login-container {
    background: white !important;
    border-radius: 12px !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important;
    padding: 48px 40px !important;
    width: 100% !important;
    max-width: 450px !important;
    position: relative !important;
    transition: box-shadow 0.3s ease !important;
    margin: 0 auto !important;
}

.login-container:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* 品牌区域 */
.brand-section {
    text-align: center;
    margin-bottom: 40px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: #4285f4;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    position: relative;
}

.brand-icon::before {
    content: '';
    width: 24px;
    height: 24px;
    background: white;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'/%3E%3C/svg%3E") no-repeat center;
    mask-size: contain;
}

.brand-title {
    font-size: 28px;
    font-weight: 600;
    color: #333;
    letter-spacing: -0.5px;
}

/* 标签导航 */
.login-tabs {
    display: flex;
    margin-bottom: 32px;
    border-bottom: 1px solid #e0e0e0;
}

.tab-item {
    flex: 1;
    padding: 12px 0;
    text-align: center;
    color: #666;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-item.active {
    color: #4285f4;
    border-bottom-color: #4285f4;
}

.tab-item:hover:not(.active) {
    color: #333;
}

/* 表单内容 */
.tab-content {
    display: none;
    height: 280px;
    overflow: visible;
    position: relative;
    padding: 5px 0;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 12px;
}

.input-group {
    display: flex;
    position: relative;
}

.country-code {
    background: white;
    border: 1px solid #e0e0e0;
    border-right: none;
    border-radius: 8px 0 0 8px;
    padding: 20px 16px;
    color: #333;
    font-size: 14px;
    min-width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    box-sizing: border-box;
}

.login-container .form-input,
input.form-input {
    width: 100% !important;
    padding: 20px 16px !important;
    border: 1px solid #e0e0e0 !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    color: #333 !important;
    transition: all 0.3s ease !important;
    background: white !important;
    box-shadow: none !important;
    height: 42px !important;
    box-sizing: border-box !important;
}

.login-container .input-group .form-input,
.input-group input.form-input {
    border-radius: 0 8px 8px 0 !important;
    flex: 1 !important;
}

.login-container .form-input:focus,
input.form-input:focus {
    outline: none !important;
    border-color: #4285f4 !important;
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1) !important;
}

.login-container .form-input::placeholder,
input.form-input::placeholder {
    color: #999 !important;
}

/* 验证码输入 */
.verification-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

.code-input-wrapper {
    flex: 1;
    position: relative;
}

.code-input-wrapper .form-input {
    padding-left: 40px;
}

.shield-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 16px;
}

.send-code-btn {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 0 16px;
    color: #333;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    min-width: 100px;
    flex-shrink: 0;
    height: 42px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-code-btn:hover:not(:disabled) {
    background: #f5f5f5;
    border-color: #ccc;
}

.send-code-btn:disabled {
    background: #f0f0f0;
    color: #999;
    cursor: not-allowed;
}

/* 二维码样式 */
.qr-code-section {
    text-align: center;
    padding: 8px 0;
}

.qr-code-container {
    margin-bottom: 4px;
}

.qr-code {
    width: 200px;
    height: 200px;
    margin: 0 auto 16px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #999;
}

.qr-loading {
    text-align: center;
}

.loading-dots {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-bottom: 12px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4285f4;
    animation: loading-bounce 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes loading-bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.qr-loading p {
    font-size: 12px;
    color: #999;
    margin: 0;
}

.qr-actual {
    width: 180px;
    height: 180px;
    display: none;
}

.qr-actual img {
    width: 100%;
    height: 100%;
    border-radius: 4px;
}

.qr-status {
    text-align: center;
}

.qr-instruction {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin: 0 0 2px 0;
}

.qr-description {
    font-size: 12px;
    color: #666;
    margin: 0;
}

/* 二维码悬停刷新 */
.qr-refresh-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 8px;
}

.qr-code:hover .qr-refresh-overlay {
    opacity: 1;
}

.qr-refresh-btn {
    background: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.qr-refresh-btn:hover {
    background: #f5f5f5;
    transform: scale(1.1);
}

.qr-refresh-btn i {
    font-size: 16px;
}

/* 二维码成功覆盖层 */
.qr-success-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #34a853 0%, #4caf50 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    animation: qr-success-fade-in 0.5s ease-out;
}

.qr-success-content {
    text-align: center;
    padding: 20px;
}

.qr-success-icon {
    font-size: 48px;
    margin-bottom: 12px;
    animation: qr-success-bounce 0.6s ease-out;
}

.qr-success-text h4 {
    margin: 0 0 8px 0;
    font-size: 18px;
    font-weight: 600;
}

.qr-success-text p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

@keyframes qr-success-fade-in {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes qr-success-bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* 二维码错误覆盖层 */
.qr-error-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #ea4335 0%, #f44336 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    animation: qr-error-fade-in 0.5s ease-out;
}

.qr-error-content {
    text-align: center;
    padding: 20px;
}

.qr-error-icon {
    font-size: 48px;
    margin-bottom: 12px;
    animation: qr-error-shake 0.6s ease-out;
}

.qr-error-text h4 {
    margin: 0 0 8px 0;
    font-size: 18px;
    font-weight: 600;
}

.qr-error-text p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

@keyframes qr-error-fade-in {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes qr-error-shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* 二维码状态 */
.qr-expired {
    position: relative;
}

.qr-expired::after {
    content: '二维码已过期\A点击刷新';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    white-space: pre-line;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
}

.qr-scanned .qr-description {
    color: #4285f4;
}

.qr-confirmed .qr-description {
    color: #34a853;
}

/* 协议同意 */
.agreement-section {
    margin: 24px 0;
}

.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.checkbox-wrapper input[type="checkbox"] {
    margin-top: 2px;
}

.agreement-text {
    color: #666;
    font-size: 13px;
    line-height: 1.5;
}

.agreement-text a {
    color: #4285f4;
    text-decoration: none;
}

.agreement-text a:hover {
    text-decoration: underline;
}

/* 协议说明 */
.terms-notice {
    text-align: center;
    margin-top: 22px;
    font-size: 13px;
    color: #666;
    line-height: 1.4;
}

.terms-notice a {
    color: #4285f4;
    text-decoration: none;
    font-weight: 500;
}

.terms-notice a:hover {
    text-decoration: underline;
}

/* 记住我和忘记密码同行布局 */
.remember-forgot-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 8px 0 40px 0;
    font-size: 13px;
}

.remember-login {
    display: flex;
    align-items: center;
}

.remember-label {
    display: flex;
    align-items: center;
    margin: 0;
    font-size: 13px !important;
    font-weight: normal !important;
    color: #666 !important;
    cursor: pointer;
}

.remember-checkbox {
    margin: 0 6px 0 0 !important;
    width: 14px !important;
    height: 14px !important;
}

.remember-text {
    font-size: 13px !important;
    color: #666 !important;
    font-weight: normal !important;
}

/* 验证码登录的记住我选项 */
.remember-verify-row {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin: 12px 0 40px 0;
    font-size: 13px;
}

.remember-verify-row .remember-login {
    display: flex;
    align-items: center;
}

.remember-verify-row .remember-label {
    display: flex;
    align-items: center;
    margin: 0;
    color: #666;
    font-size: 13px;
    cursor: pointer;
}

.remember-verify-row .remember-checkbox {
    margin: 0 6px 0 0 !important;
    width: 14px !important;
    height: 14px !important;
}

.remember-verify-row .remember-text {
    font-size: 13px !important;
    color: #666 !important;
    font-weight: normal !important;
}

/* 文档弹出对话框样式 */
.document-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    overflow-y: auto;
}

.document-modal.show {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.document-modal-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    margin: 20px auto;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.document-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #e0e0e0;
    background: #f8f9fa;
    border-radius: 12px 12px 0 0;
}

.document-modal-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.document-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #666;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.document-modal-close:hover {
    background-color: #f0f0f0;
    color: #333;
}

.document-modal-body {
    padding: 24px;
    line-height: 1.6;
    color: #333;
}

.document-content h1 {
    font-size: 24px;
    color: #333;
    margin: 0 0 16px 0;
    font-weight: 600;
}

.document-content h2 {
    font-size: 18px;
    color: #444;
    margin: 24px 0 12px 0;
    font-weight: 600;
    border-left: 4px solid #4285f4;
    padding-left: 12px;
}

.document-content p {
    margin: 12px 0;
    color: #555;
}

.document-content ul {
    margin: 12px 0;
    padding-left: 20px;
}

.document-content li {
    margin: 8px 0;
    color: #555;
}

.document-content .last-updated {
    color: #888;
    font-size: 14px;
    font-style: italic;
    margin-bottom: 24px;
}

.document-content .footer-note {
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid #e0e0e0;
    color: #888;
    font-size: 14px;
    text-align: center;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .document-modal {
        padding: 10px;
    }

    .document-modal-content {
        margin: 10px auto;
        max-height: 95vh;
        border-radius: 8px;
    }

    .document-modal-header {
        padding: 16px 20px;
        border-radius: 8px 8px 0 0;
    }

    .document-modal-title {
        font-size: 16px;
    }

    .document-modal-body {
        padding: 20px;
    }

    .document-content h1 {
        font-size: 20px;
    }

    .document-content h2 {
        font-size: 16px;
        margin: 20px 0 10px 0;
    }
}

@media (max-width: 480px) {
    .document-modal {
        padding: 5px;
    }

    .document-modal-content {
        margin: 5px auto;
        border-radius: 6px;
    }

    .document-modal-header {
        padding: 12px 16px;
        border-radius: 6px 6px 0 0;
    }

    .document-modal-body {
        padding: 16px;
    }

    .document-content h1 {
        font-size: 18px;
    }

    .document-content h2 {
        font-size: 15px;
        padding-left: 8px;
        border-left-width: 3px;
    }

    .document-content p,
    .document-content li {
        font-size: 14px;
    }
}

/* 忘记密码链接 */
.forgot-password {
    text-align: right;
    margin: 0;
}

.forgot-password a {
    color: #4285f4;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

.forgot-password a:hover {
    color: #3367d6;
    text-decoration: underline;
}

/* 注册链接 */
.signup-link {
    text-align: center;
    margin-top: 22px;
    margin-bottom: 8px;
    font-size: 13px;
    color: #666;
}

.signup-link a {
    color: #4285f4;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.signup-link a:hover {
    color: #3367d6;
    text-decoration: underline;
}

/* 通知系统 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 16px 20px;
    max-width: 350px;
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
    border-left: 4px solid #4285f4;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left-color: #34a853;
}

.notification.error {
    border-left-color: #ea4335;
}

.notification-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.notification-title {
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.notification-close {
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    font-size: 18px;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-close:hover {
    color: #666;
}

.notification-message {
    color: #666;
    font-size: 13px;
    line-height: 1.4;
}

/* 按钮 */
.login-container .primary-btn,
button.primary-btn {
    width: 100% !important;
    background: #4285f4 !important;
    color: white !important;
    border: none !important;
    border-radius: 8px !important;
    padding: 12px 24px !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
    margin-top: 16px !important;
    margin-bottom: 12px !important;
    display: block !important;
    text-align: center !important;
    text-decoration: none !important;
    line-height: 1.2 !important;
}

.login-container .primary-btn:hover:not(:disabled),
button.primary-btn:hover:not(:disabled) {
    background: #3367d6 !important;
    color: white !important;
}

.login-container .primary-btn:disabled,
button.primary-btn:disabled {
    background: #e0e0e0 !important;
    cursor: not-allowed !important;
    color: #999 !important;
}

/* 分割线 */
.divider {
    display: flex;
    align-items: center;
    margin: 16px 0 24px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e0e0e0;
}

.divider span {
    padding: 0 16px;
    color: #999;
    font-size: 14px;
    background: white;
}

/* 社交登录 */
.social-login {
    text-align: center;
}

.social-text {
    color: #999;
    font-size: 14px;
    margin-bottom: 16px;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid #e0e0e0;
    color: #666;
    text-decoration: none;
    font-size: 18px;
    transition: all 0.3s ease;
}

.social-icon:hover {
    border-color: #ccc;
    transform: translateY(-2px);
}

.social-icon.google { color: #db4437; }
.social-icon.github { color: #333; }
.social-icon.twitter { color: #1da1f2; }
.social-icon.wechat { color: #07c160; }

.social-icon.microsoft { color: #00a1f1; }
.social-icon.microsoftidentitywebapp { color: #00a1f1; }
.social-icon.azuread { color: #00a1f1; }

/* 语言选择 */
.language-selector {
    text-align: center;
    margin-top: 60px;
}

/* 自定义下拉菜单 */
.custom-dropdown {
    position: relative;
    display: inline-block;
    user-select: none;
}

.dropdown-current {
    background: transparent;
    color: #999;
    font-size: 14px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    text-align: center;
    transition: all 0.2s ease;
    min-width: 60px;
}

.dropdown-current:hover {
    color: #666;
    background: rgba(255, 255, 255, 0.05);
}

.dropdown-options {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 4px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-5px);
    transition: all 0.2s ease;
    z-index: 1000;
    min-width: 80px;
}

.custom-dropdown.open .dropdown-options {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-option {
    padding: 8px 12px;
    color: #333;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s ease;
    font-size: 13px;
}

.dropdown-option:first-child {
    border-radius: 4px 4px 0 0;
}

.dropdown-option:last-child {
    border-radius: 0 0 4px 4px;
}

.dropdown-option:only-child {
    border-radius: 4px;
}

.dropdown-option:hover {
    background: #f5f5f5;
}

.dropdown-option.selected {
    background: #e3f2fd;
    color: #1976d2;
}

.dropdown-option.selected:hover {
    background: #bbdefb;
}



/*!* 确保下拉菜单有正确的样式 *!*/
/*.language-selector select::-ms-expand {*/
/*    !* IE/Edge 下拉箭头 *!*/
/*    display: block;*/
/*}*/

/*!* 为下拉选项添加更好的视觉效果 *!*/
/*.language-selector select {*/
/*    transition: all 0.2s ease;*/
/*}*/

/*.language-selector select:focus {*/
/*    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);*/
/*}*/

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .login-container {
        padding: 32px 24px;
        margin: 16px;
        border-radius: 8px;
    }

    .brand-title {
        font-size: 24px;
    }

    .tab-item {
        font-size: 13px;
        padding: 10px 0;
    }

    .form-input {
        font-size: 16px;
    }

    .country-code {
        min-width: 70px;
        font-size: 13px;
    }

    .verification-group {
        gap: 8px;
    }

    .send-code-btn {
        padding: 0 12px;
        font-size: 13px;
        min-width: 80px;
        height: 42px;
    }

    .social-icons {
        gap: 12px;
    }

    .social-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0;
    }

    .login-container {
        margin: 0;
        padding: 24px 24px;
        border-radius: 0;
        box-shadow: none;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .brand-title {
        font-size: 22px;
    }

    .verification-group {
        gap: 8px;
    }

    .send-code-btn {
        padding: 0 8px;
        font-size: 12px;
        min-width: 70px;
        height: 42px;
    }
}

@media (max-width: 360px) {
    .login-container {
        padding: 20px 20px;
    }

    .brand-title {
        font-size: 20px;
    }

    .form-input {
        padding: 14px 16px;
    }

    .primary-btn {
        padding: 16px 24px;
        font-size: 16px;
    }

    /* 移动端语言选择器优化 */
    .language-selector {
        margin-top: 40px;
    }

    .dropdown-current {
        font-size: 12px;
        padding: 3px 6px;
        min-width: 50px;
    }

    .dropdown-options {
        min-width: 70px;
    }

    .dropdown-option {
        padding: 6px 10px;
        font-size: 12px;
    }
}