/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'SimHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.za4fdacontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.za4fdaheader {
    background-color: #1a1a1a;
    color: #fff;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.za4fdaheader .za4fdacontainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.za4fdalogo {
    flex-shrink: 0;
    z-index: 1001;
}

.za4fdalogo-text {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 5px;
}

.za4fdalogo-subtitle {
    font-size: 12px;
    color: #ccc;
}

.za4fdanav {
    position: relative;
}

.za4fdanav-list {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.za4fdanav-item {
    margin: 0;
    padding: 0;
}

.za4fdanav-link {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
    padding: 5px 0;
    display: block;
    white-space: nowrap;
}

.za4fdanav-link:hover {
    color: #ff6b35;
}

.za4fdamobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    z-index: 1001;
    position: relative;
}

.za4fdamenu-icon {
    width: 25px;
    height: 3px;
    background-color: #fff;
    transition: all 0.3s;
    border-radius: 2px;
}

.za4fdamobile-menu-toggle.za4fdamenu-active .za4fdamenu-icon:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.za4fdamobile-menu-toggle.za4fdamenu-active .za4fdamenu-icon:nth-child(2) {
    opacity: 0;
}

.za4fdamobile-menu-toggle.za4fdamenu-active .za4fdamenu-icon:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 主横幅 */
.za4fdahero {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #fff;
    padding: 50px 0;
    position: relative;
    overflow: hidden;
}

.za4fdahero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.za4fdahero-wrapper {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 40px;
    min-height: 400px;
}

.za4fdahero-content {
    flex: 1;
    text-align: left;
}

.za4fdahero-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.za4fdahero-img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: za4fdafadeInUp 1s ease-out;
}

@keyframes za4fdafadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.za4fdahero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 15px;
    line-height: 1.2;
    animation: za4fdafadeInLeft 0.8s ease-out;
}

@keyframes za4fdafadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.za4fdahero-subtitle {
    font-size: 20px;
    margin-bottom: 25px;
    color: #e0e0e0;
}

.za4fdahero-features {
    display: flex;
    justify-content: flex-start;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.za4fdafeature-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.za4fdafeature-icon {
    width: 30px;
    height: 30px;
    background-color: #ff6b35;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #fff;
}

.za4fdafeature-text {
    font-size: 16px;
}

.za4fdahero-cta {
    display: flex;
    justify-content: flex-start;
    gap: 15px;
    flex-wrap: wrap;
}

/* 按钮样式 */
.za4fdabtn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 16px;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-weight: bold;
}

.za4fdabtn-primary {
    background-color: #ff6b35;
    color: #fff;
}

.za4fdabtn-primary:hover {
    background-color: #e55a2b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.za4fdabtn-secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.za4fdabtn-secondary:hover {
    background-color: #fff;
    color: #1a1a1a;
}

.za4fdabtn-block {
    width: 100%;
    text-align: center;
}

/* 通用区块标题 */
.za4fdasection-header {
    text-align: center;
    margin-bottom: 60px;
}

.za4fdasection-title {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.za4fdasection-subtitle {
    font-size: 18px;
    color: #666;
}

/* 服务项目 */
.za4fdaservices {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.za4fdaservices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.za4fdaservice-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.za4fdaservice-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.za4fdaservice-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.za4fdaservice-title {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.za4fdaservice-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.za4fdaservice-list {
    list-style: none;
    text-align: left;
    margin-top: 20px;
}

.za4fdaservice-list li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
}

.za4fdaservice-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #ff6b35;
    font-weight: bold;
    font-size: 20px;
}

/* 服务范围 */
.za4fdascope {
    padding: 80px 0;
    background-color: #fff;
}

.za4fdascope-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.za4fdascope-item {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid #ff6b35;
    transition: all 0.3s;
}

.za4fdascope-item:hover {
    background-color: #fff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(5px);
}

.za4fdascope-title {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #1a1a1a;
}

.za4fdascope-list {
    list-style: none;
}

.za4fdascope-list li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: #555;
    border-bottom: 1px solid #e0e0e0;
}

.za4fdascope-list li:last-child {
    border-bottom: none;
}

.za4fdascope-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #ff6b35;
    font-weight: bold;
}

/* 服务优势 */
.za4fdaadvantages {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.za4fdaadvantages-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.za4fdaadvantage-item {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    background-color: #f8f9fa;
    transition: all 0.3s;
}

.za4fdaadvantage-item:hover {
    background-color: #fff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.za4fdaadvantage-number {
    font-size: 48px;
    font-weight: bold;
    color: #ff6b35;
    margin-bottom: 15px;
    opacity: 0.3;
}

.za4fdaadvantage-title {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.za4fdaadvantage-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

/* 成功案例 */
.za4fdacases {
    padding: 80px 0;
    background-color: #fff;
}

.za4fdacases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.za4fdacase-card {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.za4fdacase-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.za4fdacase-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.za4fdacase-tag {
    background-color: #ff6b35;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
}

.za4fdacase-amount {
    font-size: 18px;
    font-weight: bold;
    color: #ff6b35;
}

.za4fdacase-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.za4fdacase-desc {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.za4fdacase-process {
    margin-bottom: 20px;
}

.za4fdacase-process-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.za4fdacase-process-list {
    list-style: none;
    padding-left: 0;
}

.za4fdacase-process-list li {
    font-size: 14px;
    color: #555;
    padding: 5px 0;
    padding-left: 20px;
    position: relative;
}

.za4fdacase-process-list li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: #ff6b35;
}

.za4fdacase-result {
    padding-top: 15px;
    border-top: 2px solid #ff6b35;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.za4fdacase-result-label {
    font-weight: bold;
    color: #1a1a1a;
}

.za4fdacase-result-value {
    color: #ff6b35;
    font-weight: bold;
}

/* 客户评价 */
.za4fdatestimonials {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.za4fdatestimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.za4fdatestimonial-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.za4fdatestimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.za4fdatestimonial-rating {
    color: #ff6b35;
    font-size: 20px;
    margin-bottom: 15px;
}

.za4fdatestimonial-text {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.za4fdatestimonial-author {
    border-top: 1px solid #e0e0e0;
    padding-top: 15px;
}

.za4fdatestimonial-name {
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 5px;
}

.za4fdatestimonial-company {
    font-size: 14px;
    color: #999;
}

/* 服务流程 */
.za4fdaprocess {
    padding: 80px 0;
    background-color: #fff;
}

.za4fdaprocess-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.za4fdaprocess-step {
    flex: 1;
    min-width: 180px;
    text-align: center;
    padding: 30px 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.za4fdaprocess-step:hover {
    transform: translateY(-5px);
}

.za4fdastep-number {
    width: 60px;
    height: 60px;
    background-color: #ff6b35;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.za4fdastep-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.za4fdastep-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.za4fdaprocess-arrow {
    font-size: 32px;
    color: #ff6b35;
    font-weight: bold;
}

/* 收费标准 */
.za4fdapricing {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.za4fdapricing-content {
    max-width: 1000px;
    margin: 0 auto;
}

.za4fdapricing-note {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    text-align: center;
    border-left: 4px solid #ff6b35;
}

.za4fdapricing-note p {
    font-size: 16px;
    color: #666;
    margin: 0;
}

.za4fdapricing-table {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.za4fdapricing-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1.5fr;
    border-bottom: 1px solid #e0e0e0;
}

.za4fdapricing-row:last-child {
    border-bottom: none;
}

.za4fdapricing-header {
    background-color: #1a1a1a;
    color: #fff;
}

.za4fdapricing-cell {
    padding: 20px;
    font-size: 16px;
    color: #333;
}

.za4fdapricing-header .za4fdapricing-cell {
    color: #fff;
    font-weight: bold;
}

.za4fdapricing-row:not(.za4fdapricing-header):hover {
    background-color: #f8f9fa;
}

.za4fdapricing-features {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.za4fdapricing-features-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #1a1a1a;
}

.za4fdapricing-features-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.za4fdapricing-features-list li {
    font-size: 15px;
    color: #666;
    padding: 10px 0;
}

/* 团队介绍 */
.za4fdateam {
    padding: 80px 0;
    background-color: #fff;
}

.za4fdateam-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.za4fdateam-item {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
}

.za4fdateam-item:hover {
    background-color: #fff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.za4fdateam-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.za4fdateam-title {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #1a1a1a;
}

.za4fdateam-desc {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.za4fdateam-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.za4fdateam-stats span {
    font-size: 14px;
    color: #ff6b35;
    font-weight: bold;
}

/* 关于我们 */
.za4fdaabout {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.za4fdaabout-content {
    max-width: 900px;
    margin: 0 auto;
}

.za4fdaabout-title {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 30px;
    text-align: center;
    color: #1a1a1a;
}

.za4fdaabout-desc {
    font-size: 18px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

.za4fdastats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.za4fdastat-item {
    text-align: center;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s;
}

.za4fdastat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.za4fdastat-number {
    font-size: 42px;
    font-weight: bold;
    color: #ff6b35;
    margin-bottom: 10px;
}

.za4fdastat-label {
    font-size: 16px;
    color: #666;
}

.za4fdaabout-features {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 2px solid #e0e0e0;
}

.za4fdaabout-features-title {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 30px;
    text-align: center;
    color: #1a1a1a;
}

.za4fdaabout-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.za4fdaabout-feature {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background-color: #fff;
    border-radius: 8px;
    transition: all 0.3s;
}

.za4fdaabout-feature:hover {
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transform: translateX(5px);
}

.za4fdaabout-feature-icon {
    width: 30px;
    height: 30px;
    background-color: #ff6b35;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.za4fdaabout-feature-text {
    font-size: 16px;
    color: #555;
}

/* 常见问题 */
.za4fdafaq {
    padding: 80px 0;
    background-color: #fff;
}

.za4fdafaq-list {
    max-width: 900px;
    margin: 0 auto;
}

.za4fdafaq-item {
    background-color: #f8f9fa;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

.za4fdafaq-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.za4fdafaq-question {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 25px 30px;
    cursor: pointer;
    background-color: #fff;
    border-bottom: 1px solid #e0e0e0;
}

.za4fdafaq-icon {
    width: 35px;
    height: 35px;
    background-color: #ff6b35;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
    flex-shrink: 0;
}

.za4fdafaq-title {
    font-size: 18px;
    font-weight: bold;
    color: #1a1a1a;
    margin: 0;
}

.za4fdafaq-answer {
    padding: 25px 30px;
    padding-left: 70px;
}

.za4fdafaq-answer p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin: 0;
}

/* 联系我们 */
.za4fdacontact {
    padding: 80px 0;
    background-color: #1a1a1a;
    color: #fff;
}

.za4fdacontact .za4fdasection-title,
.za4fdacontact .za4fdasection-subtitle {
    color: #fff;
}

.za4fdacontact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.za4fdacontact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.za4fdacontact-icon {
    font-size: 32px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #ff6b35;
    border-radius: 10px;
    flex-shrink: 0;
}

.za4fdacontact-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}

.za4fdacontact-text {
    font-size: 16px;
    color: #ccc;
    margin-bottom: 5px;
}

.za4fdacontact-form-wrapper {
    background-color: #2d2d2d;
    padding: 40px;
    border-radius: 10px;
}

.za4fdaform-group {
    margin-bottom: 20px;
}

.za4fdaform-input,
.za4fdaform-textarea {
    width: 100%;
    padding: 15px;
    font-size: 16px;
    border: 1px solid #444;
    border-radius: 5px;
    background-color: #1a1a1a;
    color: #fff;
    font-family: inherit;
}

.za4fdaform-input:focus,
.za4fdaform-textarea:focus {
    outline: none;
    border-color: #ff6b35;
}

.za4fdaform-textarea {
    resize: vertical;
}

/* 页脚 */
.za4fdafooter {
    background-color: #0f0f0f;
    color: #ccc;
    padding: 50px 0 20px;
}

.za4fdafooter-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.za4fdafooter-title {
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
}

.za4fdafooter-text {
    font-size: 14px;
    line-height: 1.8;
    color: #999;
}

.za4fdafooter-links {
    list-style: none;
}

.za4fdafooter-links li {
    margin-bottom: 10px;
}

.za4fdafooter-link {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.za4fdafooter-link:hover {
    color: #ff6b35;
}

.za4fdafooter-cert {
    margin-top: 20px;
}

.za4fdafooter-cert-item {
    font-size: 14px;
    color: #999;
    margin-bottom: 8px;
}

.za4fdafooter-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
}

.za4fdafooter-copyright {
    font-size: 14px;
    color: #666;
}

/* 响应式设计 */

/* 桌面端 (大于768px) - 确保导航正常显示 */
@media (min-width: 769px) {
    .za4fdanav-list {
        display: flex !important;
        position: static;
        flex-direction: row;
        background-color: transparent;
        box-shadow: none;
        border-top: none;
        padding: 0;
        max-height: none;
    }

    .za4fdamobile-menu-toggle {
        display: none !important;
    }

    .za4fdanav-item {
        width: auto;
        border-bottom: none;
    }

    .za4fdanav-link {
        padding: 5px 0;
        min-height: auto;
        line-height: normal;
        text-align: left;
    }

    .za4fdanav-link:hover,
    .za4fdanav-link:active {
        padding-left: 0;
        background-color: transparent;
    }
}

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .za4fdacontainer {
        padding: 0 15px;
    }

    .za4fdahero-title {
        font-size: 40px;
    }

    .za4fdasection-title {
        font-size: 32px;
    }

    .za4fdascope-grid,
    .za4fdaadvantages-content,
    .za4fdacases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动设备 (最大宽度 768px) */
@media (max-width: 768px) {
    .za4fdacontainer {
        padding: 0 15px;
    }

    /* 头部导航优化 */
    .za4fdaheader {
        padding: 12px 0;
        position: relative;
    }

    .za4fdaheader .za4fdacontainer {
        position: relative;
        width: 100%;
    }

    .za4fdalogo {
        flex: 1;
        z-index: 1002;
    }

    .za4fdalogo-text {
        font-size: 18px;
        margin-bottom: 3px;
    }

    .za4fdalogo-subtitle {
        font-size: 11px;
    }

    /* 显示移动端菜单按钮 */
    .za4fdamobile-menu-toggle {
        display: flex !important;
        padding: 8px;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
        z-index: 1002;
        position: relative;
    }

    /* 隐藏桌面端导航，显示移动端导航 */
    .za4fdanav {
        position: static;
    }

    .za4fdanav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background-color: #1a1a1a;
        flex-direction: column;
        padding: 0;
        margin: 0;
        gap: 0;
        display: none !important; /* 默认隐藏 */
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        border-top: 1px solid #333;
        z-index: 1000;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    }

    /* 激活状态显示导航 */
    .za4fdanav-list.za4fdanav-active {
        display: flex !important;
        max-height: 500px;
        padding: 15px 20px;
    }

    .za4fdanav-item {
        width: 100%;
        border-bottom: 1px solid #333;
        margin: 0;
        padding: 0;
    }

    .za4fdanav-item:last-child {
        border-bottom: none;
    }

    .za4fdanav-link {
        display: block;
        padding: 15px 0;
        font-size: 16px;
        min-height: 44px;
        line-height: 44px;
        width: 100%;
        text-align: left;
        white-space: normal;
    }

    .za4fdanav-link:hover,
    .za4fdanav-link:active {
        color: #ff6b35;
        background-color: rgba(255, 107, 53, 0.1);
        padding-left: 10px;
        transition: all 0.3s;
    }

    /* 主横幅优化 */
    .za4fdahero {
        padding: 40px 0;
    }

    .za4fdahero-wrapper {
        flex-direction: column;
        gap: 30px;
        min-height: auto;
        text-align: center;
    }

    .za4fdahero-content {
        text-align: center;
    }

    .za4fdahero-image {
        order: -1;
    }

    .za4fdahero-img {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
    }

    .za4fdahero-title {
        font-size: 28px;
        line-height: 1.3;
        margin-bottom: 12px;
    }

    .za4fdahero-subtitle {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .za4fdahero-features {
        flex-direction: column;
        gap: 15px;
        justify-content: center;
        align-items: center;
        margin-bottom: 25px;
    }

    .za4fdafeature-item {
        justify-content: center;
    }

    .za4fdahero-cta {
        justify-content: center;
        gap: 12px;
    }

    .za4fdabtn {
        min-height: 44px;
        padding: 12px 24px;
        font-size: 15px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* 区块标题优化 */
    .za4fdasection-header {
        margin-bottom: 40px;
    }

    .za4fdasection-title {
        font-size: 26px;
        margin-bottom: 12px;
    }

    .za4fdasection-subtitle {
        font-size: 15px;
    }

    /* 通用区块间距优化 */
    .za4fdascope,
    .za4fdaadvantages,
    .za4fdacases,
    .za4fdaprocess,
    .za4fdateam,
    .za4fdafaq,
    .za4fdacontact {
        padding: 50px 0;
    }

    /* 服务范围优化 */
    .za4fdascope-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .za4fdascope-item {
        padding: 25px 20px;
    }

    .za4fdascope-title {
        font-size: 20px;
        margin-bottom: 15px;
    }

    /* 服务优势优化 */
    .za4fdaadvantages-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .za4fdaadvantage-item {
        padding: 25px 20px;
    }

    .za4fdaadvantage-number {
        font-size: 40px;
    }

    .za4fdaadvantage-title {
        font-size: 20px;
    }

    /* 成功案例优化 */
    .za4fdacases-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .za4fdacase-card {
        padding: 25px 20px;
    }

    .za4fdacase-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        margin-bottom: 15px;
    }

    .za4fdacase-title {
        font-size: 18px;
    }

    .za4fdacase-result {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    /* 服务流程优化 */
    .za4fdaprocess-steps {
        flex-direction: column;
        gap: 15px;
    }

    .za4fdaprocess-step {
        min-width: 100%;
        width: 100%;
    }

    .za4fdaprocess-arrow {
        transform: rotate(90deg);
        margin: 5px 0;
        font-size: 28px;
    }

    /* 团队介绍优化 */
    .za4fdateam-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .za4fdateam-item {
        padding: 30px 20px;
    }

    /* 常见问题优化 */
    .za4fdafaq-question {
        padding: 20px;
        gap: 12px;
    }

    .za4fdafaq-title {
        font-size: 16px;
        line-height: 1.4;
    }

    .za4fdafaq-answer {
        padding: 20px;
        padding-left: 20px;
    }

    .za4fdafaq-answer p {
        font-size: 14px;
    }

    /* 联系我们优化 */
    .za4fdacontact-content {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .za4fdacontact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        margin-bottom: 30px;
    }

    .za4fdacontact-icon {
        font-size: 28px;
        width: 50px;
        height: 50px;
    }

    .za4fdacontact-form-wrapper {
        padding: 30px 20px;
    }

    .za4fdaform-input,
    .za4fdaform-textarea {
        padding: 12px;
        font-size: 16px; /* 防止iOS自动缩放 */
        min-height: 44px;
    }

    /* 页脚优化 */
    .za4fdafooter {
        padding: 40px 0 20px;
    }

    .za4fdafooter-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .za4fdastats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    /* 表格优化 */
    .za4fdapricing-row {
        grid-template-columns: 1fr;
        border-bottom: 2px solid #e0e0e0;
    }

    .za4fdapricing-header {
        display: none;
    }

    .za4fdapricing-cell {
        padding: 12px 15px;
        border-bottom: 1px solid #e0e0e0;
        display: block;
    }

    .za4fdapricing-cell:last-child {
        border-bottom: none;
    }

    .za4fdapricing-row:not(.za4fdapricing-header) .za4fdapricing-cell:first-child {
        font-weight: bold;
        background-color: #f8f9fa;
        border-bottom: 1px solid #e0e0e0;
    }
}

/* 小屏移动设备 (最大宽度 480px) */
@media (max-width: 480px) {
    .za4fdacontainer {
        padding: 0 12px;
    }

    /* 头部进一步优化 */
    .za4fdaheader {
        padding: 10px 0;
    }

    .za4fdalogo-text {
        font-size: 16px;
    }

    .za4fdalogo-subtitle {
        font-size: 10px;
    }

    /* 确保移动端菜单按钮显示 */
    .za4fdamobile-menu-toggle {
        display: flex !important;
        min-width: 40px;
        min-height: 40px;
        padding: 6px;
    }

    /* 确保导航列表默认隐藏 */
    .za4fdanav-list {
        display: none !important;
    }

    /* 激活状态显示导航 */
    .za4fdanav-list.za4fdanav-active {
        display: flex !important;
        padding: 12px 15px;
    }

    .za4fdanav-link {
        padding: 12px 0;
        font-size: 15px;
        min-height: 44px;
        line-height: 20px;
        padding-top: 12px;
        padding-bottom: 12px;
    }

    /* 主横幅进一步优化 */
    .za4fdahero {
        padding: 30px 0;
    }

    .za4fdahero-wrapper {
        gap: 20px;
    }

    .za4fdahero-title {
        font-size: 22px;
        line-height: 1.3;
    }

    .za4fdahero-subtitle {
        font-size: 14px;
        margin-bottom: 18px;
    }

    .za4fdahero-features {
        gap: 12px;
        margin-bottom: 20px;
    }

    .za4fdafeature-icon {
        width: 26px;
        height: 26px;
        font-size: 14px;
    }

    .za4fdafeature-text {
        font-size: 14px;
    }

    .za4fdahero-cta {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .za4fdabtn {
        width: 100%;
        padding: 14px 20px;
        font-size: 15px;
    }

    /* 区块标题进一步优化 */
    .za4fdasection-header {
        margin-bottom: 30px;
    }

    .za4fdasection-title {
        font-size: 22px;
    }

    .za4fdasection-subtitle {
        font-size: 14px;
    }

    /* 通用区块间距进一步优化 */
    .za4fdascope,
    .za4fdaadvantages,
    .za4fdacases,
    .za4fdaprocess,
    .za4fdateam,
    .za4fdafaq,
    .za4fdacontact {
        padding: 40px 0;
    }

    /* 卡片内边距优化 */
    .za4fdascope-item,
    .za4fdaadvantage-item,
    .za4fdacase-card,
    .za4fdateam-item {
        padding: 20px 15px;
    }

    /* 服务范围进一步优化 */
    .za4fdascope-title {
        font-size: 18px;
    }

    .za4fdascope-list li {
        font-size: 14px;
        padding: 8px 0;
        padding-left: 22px;
    }

    /* 服务优势进一步优化 */
    .za4fdaadvantage-number {
        font-size: 36px;
    }

    .za4fdaadvantage-title {
        font-size: 18px;
    }

    .za4fdaadvantage-desc {
        font-size: 14px;
    }

    /* 成功案例进一步优化 */
    .za4fdacase-title {
        font-size: 17px;
    }

    .za4fdacase-desc {
        font-size: 14px;
    }

    .za4fdacase-amount {
        font-size: 16px;
    }

    /* 服务流程进一步优化 */
    .za4fdastep-number {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }

    .za4fdastep-title {
        font-size: 18px;
    }

    .za4fdastep-desc {
        font-size: 13px;
    }

    /* 常见问题进一步优化 */
    .za4fdafaq-question {
        padding: 15px;
    }

    .za4fdafaq-icon {
        width: 30px;
        height: 30px;
        font-size: 16px;
    }

    .za4fdafaq-title {
        font-size: 15px;
    }

    .za4fdafaq-answer {
        padding: 15px;
    }

    .za4fdafaq-answer p {
        font-size: 13px;
    }

    /* 联系我们进一步优化 */
    .za4fdacontact-content {
        gap: 30px;
    }

    .za4fdacontact-form-wrapper {
        padding: 20px 15px;
    }

    .za4fdacontact-title {
        font-size: 18px;
    }

    .za4fdacontact-text {
        font-size: 14px;
    }

    /* 页脚进一步优化 */
    .za4fdafooter {
        padding: 35px 0 15px;
    }

    .za4fdafooter-title {
        font-size: 18px;
    }

    .za4fdafooter-text,
    .za4fdafooter-links li {
        font-size: 13px;
    }

    /* 统计数据优化 */
    .za4fdastats {
        grid-template-columns: 1fr;
    }

    .za4fdastat-number {
        font-size: 36px;
    }

    .za4fdastat-label {
        font-size: 14px;
    }

    /* 团队统计优化 */
    .za4fdateam-stats {
        flex-direction: column;
        gap: 8px;
    }

    /* 定价功能列表优化 */
    .za4fdapricing-features-list {
        grid-template-columns: 1fr;
    }
}

/* 超小屏设备 (最大宽度 360px) */
@media (max-width: 360px) {
    .za4fdacontainer {
        padding: 0 10px;
    }

    .za4fdahero-title {
        font-size: 20px;
    }

    .za4fdasection-title {
        font-size: 20px;
    }

    .za4fdabtn {
        padding: 12px 18px;
        font-size: 14px;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .za4fdahero {
        padding: 25px 0;
    }

    .za4fdahero-wrapper {
        gap: 20px;
    }

    .za4fdahero-title {
        font-size: 24px;
    }
}

/* 移动端触摸优化 */
@media (max-width: 768px) {
    /* 优化可点击元素的触摸反馈 */
    .za4fdabtn,
    .za4fdanav-link,
    .za4fdafooter-link {
        -webkit-tap-highlight-color: rgba(255, 107, 53, 0.3);
    }

    /* 优化按钮触摸反馈 */
    .za4fdabtn:active {
        transform: scale(0.98);
    }

    /* 优化卡片触摸反馈 */
    .za4fdacase-card:active,
    .za4fdaservice-card:active,
    .za4fdaadvantage-item:active {
        transform: scale(0.98);
    }

    /* 防止文本选择（在某些情况下） */
    .za4fdanav-link {
        -webkit-user-select: none;
        user-select: none;
    }

    /* 优化图片加载 */
    .za4fdahero-img {
        max-width: 100%;
        height: auto;
        display: block;
    }
}

/* 移动端滚动优化 */
@media (max-width: 768px) {
    html {
        -webkit-overflow-scrolling: touch;
    }

    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 打印样式 */
@media print {
    .za4fdaheader,
    .za4fdafooter,
    .za4fdahero-cta,
    .za4fdacontact-form-wrapper {
        display: none;
    }
}