/* Cloud Footer 样式文件 */
/* 与 cloud_header 匹配的主色调和设计风格 */

:root {
    --primary-color: #2c3e50;
    --primary-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --secondary-color: #34495e;
    --accent-color: #4CAF50;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --bg-gray: #edf2f7;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --backdrop-blur: blur(20px);
}

/* Footer 主容器 */
.cloud-footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-footer.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.cloud-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="0.5" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    pointer-events: none;
}

.cloud-footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* 主要内容区域 */
.cloud-footer-main {
    padding: 60px 0 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cloud-footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    align-items: start;
}

@media (max-width: 1024px) {
    .cloud-footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .cloud-footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .cloud-footer-main {
        padding: 40px 0 30px;
    }
}

/* Footer 区块 - 优化进入动画 */
.cloud-footer-section {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-footer-section.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* 子元素交错动画 */
.cloud-footer-section h3 {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transition-delay: 0.1s;
}

.cloud-footer-section.animate-in h3 {
    opacity: 1;
    transform: translateX(0);
}

.cloud-footer-section p,
.cloud-footer-section .cloud-contact-item {
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-footer-section.animate-in p,
.cloud-footer-section.animate-in .cloud-contact-item {
    opacity: 1;
    transform: translateX(0);
}

/* QuickLink 逐个进入动画 - 增强效果 */
.cloud-footer-section .cloud-footer-nav ul li,
.cloud-footer-section .cloud-service-list ul li {
    transform: translateX(30px) translateY(10px);
    opacity: 0;
    transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(1),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(1) {
    transition-delay: 0.2s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(2),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(2) {
    transition-delay: 0.35s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(3),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(3) {
    transition-delay: 0.5s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(4),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(4) {
    transition-delay: 0.65s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(5),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(5) {
    transition-delay: 0.8s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(6),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(6) {
    transition-delay: 0.95s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(7),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(7) {
    transition-delay: 1.1s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}
.cloud-footer-section.animate-in .cloud-footer-nav ul li:nth-child(8),
.cloud-footer-section.animate-in .cloud-service-list ul li:nth-child(8) {
    transition-delay: 1.25s;
    transform: translateX(0) translateY(0);
    opacity: 1;
}

/* 链接悬停动画增强 */
.cloud-footer-section ul li a {
    display: inline-block;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-footer-section ul li a:hover {
    transform: translateX(5px);
    color: var(--accent-color);
}

/* 联系信息项逐个进入动画 */
.cloud-footer-section.animate-in .cloud-contact-item:nth-child(1) { transition-delay: 0.2s; }
.cloud-footer-section.animate-in .cloud-contact-item:nth-child(2) { transition-delay: 0.35s; }
.cloud-footer-section.animate-in .cloud-contact-item:nth-child(3) { transition-delay: 0.5s; }

/* 公司信息区域 */
.cloud-footer-company {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cloud-footer-logo img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: var(--transition);
}

.cloud-footer-logo:hover img {
    transform: scale(1.05);
}

.cloud-footer-slogan {
    font-size: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.cloud-footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cloud-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    transition: var(--transition);
}

.cloud-contact-item:hover {
    color: white;
    transform: translateX(5px);
}

.cloud-contact-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    padding: 8px;
    transition: var(--transition);
}

.cloud-contact-item:hover .cloud-contact-icon {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.cloud-contact-icon svg {
    width: 16px;
    height: 16px;
    color: currentColor;
}

/* Footer 标题 */
.cloud-footer-title {
    font-size: 18px;
    font-weight: 600;
    color: white;
    margin: 0 0 20px 0;
    position: relative;
    padding-bottom: 10px;
}

.cloud-footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent-color);
    border-radius: 1px;
}

@media (max-width: 768px) {
    .cloud-footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

/* 快速链接区域 */
.cloud-footer-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cloud-footer-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    padding: 4px 0;
    position: relative;
}

.cloud-footer-nav a:hover {
    color: white;
    padding-left: 10px;
}

.cloud-footer-nav a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: var(--transition);
}

.cloud-footer-nav a:hover::before {
    width: 6px;
}

/* 服务支持区域 */
.cloud-service-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cloud-service-list li {
    position: relative;
}

.cloud-service-list a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    padding: 4px 0;
    display: block;
    position: relative;
}

.cloud-service-list a:hover {
    color: white;
    padding-left: 10px;
}

.cloud-service-list a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: var(--transition);
}

.cloud-service-list a:hover::before {
    width: 6px;
}

/* 社交媒体区域 */
.cloud-social-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

@media (max-width: 768px) {
    .cloud-social-grid {
        grid-template-columns: repeat(4, 1fr);
        justify-items: center;
    }
}

.cloud-social-item {
    position: relative;
}

.cloud-social-item a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    padding: 12px;
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: var(--backdrop-blur);
}

.cloud-social-item a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.cloud-social-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-social-icon.animate-in {
    opacity: 1;
    transform: scale(1);
}

.cloud-social-item:hover .cloud-social-icon {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.cloud-social-icon img,
.cloud-social-icon svg {
    width: 18px;
    height: 18px;
}

.cloud-social-item span {
    font-size: 12px;
    font-weight: 500;
}

/* 二维码弹窗 */
.cloud-social-qr {
    position: relative;
}

.cloud-qr-popup {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: white;
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    min-width: 120px;
    text-align: center;
}

.cloud-qr-popup::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: white;
}

.cloud-social-qr:hover .cloud-qr-popup {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.cloud-qr-popup img {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 8px;
}

.cloud-qr-popup p {
    margin: 0;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 版权信息区域 */
.cloud-footer-bottom {
    padding: 20px 0;
    background: rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cloud-footer-copyright.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.cloud-footer-copyright {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

@media (max-width: 768px) {
    .cloud-footer-copyright {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

.cloud-copyright-text {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.cloud-copyright-text p {
    margin: 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.4;
}

.cloud-copyright-text a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.cloud-copyright-text a:hover {
    color: white;
}

.cloud-footer-beian {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cloud-footer-beian a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.cloud-footer-beian a:hover {
    color: white;
}

.cloud-footer-beian img {
    width: 16px;
    height: 16px;
    opacity: 0.8;
}

/* 返回顶部按钮 */
.cloud-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #4a90e2 0%, #63b3ed 100%); /* 重新适配为柔和蓝渐变 */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(24px) scale(0.75);
    z-index: 1000;
    backdrop-filter: var(--backdrop-blur);
    transition: opacity 420ms cubic-bezier(0.2, 0.8, 0.2, 1), visibility 420ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 240ms ease;
    will-change: opacity, transform;
    animation: pingPongBounce 1.8s infinite cubic-bezier(0.36, 0, 0.66, -0.36);
}

.cloud-back-to-top.animate-in,
.cloud-back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1.08);
}

/* 进入后的轻微回弹 */
.cloud-back-to-top.animate-in {
    animation: backToTopPop 420ms cubic-bezier(0.2, 0.8, 0.2, 1) 60ms 1 both;
}

@keyframes backToTopPop {
    0% { transform: translateY(24px) scale(0.75); }
    60% { transform: translateY(-4px) scale(1.12); }
    100% { transform: translateY(0) scale(1.0); }
}

.cloud-back-to-top:hover {
    transform: translateY(-6px) scale(1.06);
    box-shadow: var(--shadow-2xl, 0 18px 40px rgba(0,0,0,0.35));
    animation: pingPongBounceHover 0.8s infinite cubic-bezier(0.36, 0, 0.66, -0.36);
}

.cloud-back-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cloud-back-icon svg {
    width: 16px;
    height: 16px;
}

/* 乒乓球弹跳动画：模拟球的反弹效果 */
@keyframes pingPongBounce {
    0% { transform: translateY(0); }
    25% { transform: translateY(-8px); } /* 上跳峰值 */
    50% { transform: translateY(0); } /* 回落地面 */
    65% { transform: translateY(-4px); } /* 小反弹 */
    80% { transform: translateY(0); } /* 回落 */
    90% { transform: translateY(-2px); } /* 更小反弹 */
    100% { transform: translateY(0); }
}

@keyframes pingPongBounceHover {
    0% { transform: translateY(0); }
    25% { transform: translateY(-10px); }
    50% { transform: translateY(0); }
    65% { transform: translateY(-5px); }
    80% { transform: translateY(0); }
    90% { transform: translateY(-2.5px); }
    100% { transform: translateY(0); }
}

/* 取消文字hover增强效果，仅保持基础样式 */
.cloud-back-to-top span {
    display: none; /* 隐藏文字以实现纯图标 */
}

/* 点击涟漪效果（纯CSS伪元素） */
.cloud-back-to-top::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(255,255,255,0.45);
    opacity: 0;
    transition: box-shadow 0.6s ease, opacity 0.6s ease;
}

.cloud-back-to-top:active::after {
    box-shadow: 0 0 0 14px rgba(255,255,255,0);
    opacity: 1;
    transition: box-shadow 0.35s ease, opacity 0.35s ease;
}

@media (max-width: 768px) {
    .cloud-back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .cloud-back-icon svg {
        width: 14px;
        height: 14px;
    }
    
    .cloud-back-to-top span {
        font-size: 9px;
    }
}

/* 客户留言弹窗 */
.cloud-message-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: var(--backdrop-blur);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 20px;
}

.cloud-message-overlay.show {
    opacity: 1;
    visibility: visible;
}

.cloud-message-container {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
}

.cloud-message-overlay.show .cloud-message-container {
    transform: scale(1) translateY(0);
}

.cloud-message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px 20px;
    border-bottom: 1px solid var(--border-color);
}

.cloud-message-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.cloud-message-close {
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.cloud-message-close:hover {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.cloud-message-close svg {
    width: 18px;
    height: 18px;
}

.cloud-message-form {
    padding: 30px;
}

.cloud-form-group {
    margin-bottom: 20px;
}

.cloud-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.cloud-form-group input,
.cloud-form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    transition: var(--transition);
    background: var(--bg-white);
    color: var(--text-primary);
    box-sizing: border-box;
}

.cloud-form-group input:focus,
.cloud-form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.cloud-form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.cloud-verify-group {
    display: flex;
    gap: 15px;
    align-items: end;
}

.cloud-verify-input {
    flex: 1;
    margin-bottom: 0;
}

.cloud-verify-image {
    flex-shrink: 0;
}

.cloud-verify-image img {
    width: 100px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.cloud-verify-image img:hover {
    border-color: var(--primary-color);
}

.cloud-message-submit {
    width: 100%;
    padding: 14px 24px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.cloud-message-submit:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.cloud-message-submit:active {
    transform: translateY(0);
}

.cloud-message-submit.loading .cloud-submit-text {
    opacity: 0;
}

.cloud-message-submit.loading .cloud-submit-loading {
    opacity: 1;
}

.cloud-submit-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: var(--transition);
}

.cloud-loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 动画定义 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 响应式优化 */
@media (max-width: 480px) {
    .cloud-message-header {
        padding: 20px 20px 15px;
    }
    
    .cloud-message-form {
        padding: 20px;
    }
    
    .cloud-verify-group {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .cloud-verify-image {
        align-self: center;
    }
    
    .cloud-verify-image img {
        width: 120px;
        height: 48px;
    }
}

/* 滚动条样式 */
.cloud-message-container::-webkit-scrollbar {
    width: 6px;
}

.cloud-message-container::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: 3px;
}

.cloud-message-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
    transition: var(--transition);
}

.cloud-message-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}