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

body {
    font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .zd4983nav-link,
    .zd4983form-button,
    .zd4983service-card,
    .zd4983advantage-item,
    .zd4983contact-card {
        -webkit-tap-highlight-color: rgba(102, 126, 234, 0.2);
    }

    .zd4983form-input:focus,
    .zd4983form-textarea:focus,
    .zd4983form-select:focus {
        font-size: 16px; /* 防止iOS自动缩放 */
    }
}

.zd4983container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
}

/* 头部样式 */
.zd4983header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* PC端导航布局 */
.zd4983header .zd4983container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.zd4983nav {
    overflow-x: visible;
    overflow-y: visible;
}

.zd4983nav::-webkit-scrollbar {
    height: 2px;
}

.zd4983nav::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.1);
}

.zd4983nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.3);
    border-radius: 2px;
}

.zd4983logo-text {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 5px;
}

.zd4983logo-subtitle {
    font-size: 14px;
    opacity: 0.9;
}

.zd4983nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
    flex-wrap: nowrap;
    white-space: nowrap;
    padding: 0;
    margin: 0;
}

.zd4983nav-item {
    flex-shrink: 0;
}

.zd4983nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s;
    padding: 5px 0;
    display: block;
    white-space: nowrap;
}

.zd4983nav-link:hover {
    opacity: 0.8;
    border-bottom: 2px solid #fff;
}

/* 英雄区块 */
.zd4983hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 50px 0;
    position: relative;
    overflow: hidden;
}

.zd4983hero-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.zd4983hero-content {
    text-align: left;
}

.zd4983hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 10px;
}

.zd4983hero-img {
    max-width: 100%;
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.4);
    animation: zd4983float 3s ease-in-out infinite;
    object-fit: contain;
    display: block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

@keyframes zd4983float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.zd4983hero-title {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 15px;
}

.zd4983hero-subtitle {
    font-size: 20px;
    margin-bottom: 15px;
    opacity: 0.95;
    line-height: 1.8;
}

.zd4983hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 25px;
}

@media (max-width: 992px) {
    .zd4983hero-features {
        grid-template-columns: 1fr;
    }

    .zd4983framework-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }

    .zd4983framework-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .zd4983comparison-header,
    .zd4983comparison-row {
        grid-template-columns: 1.2fr 1.4fr 1.4fr;
    }

    .zd4983process-timeline::before {
        left: 40px;
    }

    .zd4983step-number {
        width: 75px;
        height: 75px;
        min-width: 75px;
        font-size: 26px;
    }

    .zd4983step-details {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .zd4983process-summary {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .zd4983contact-framework {
        gap: 30px;
    }

    .zd4983contact-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }

    .zd4983contact-form-wrapper {
        position: static;
    }

    .zd4983services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .zd4983hero-wrapper {
        gap: 35px;
    }
}

/* 横屏手机优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .zd4983hero {
        padding: 40px 0;
    }

    .zd4983hero-wrapper {
        grid-template-columns: 1.2fr 1fr;
        gap: 30px;
        text-align: left;
    }

    .zd4983hero-content {
        text-align: left;
    }

    .zd4983hero-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

.zd4983feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.zd4983feature-item > div {
    display: flex;
    align-items: center;
    gap: 10px;
}

.zd4983feature-icon {
    width: 30px;
    height: 30px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.zd4983feature-text {
    font-size: 16px;
    font-weight: bold;
}

.zd4983feature-detail {
    font-size: 13px;
    opacity: 0.85;
    line-height: 1.5;
}

/* 区块标题 */
.zd4983section-header {
    text-align: center;
    margin-bottom: 50px;
}

.zd4983section-title {
    font-size: 36px;
    color: #1e3c72;
    margin-bottom: 15px;
    font-weight: bold;
}

.zd4983section-subtitle {
    font-size: 18px;
    color: #666;
}

/* 服务项目 */
.zd4983services {
    padding: 80px 0;
    background: #fff;
}

.zd4983services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.zd4983service-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.zd4983service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.zd4983service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.zd4983service-title {
    font-size: 22px;
    color: #1e3c72;
    margin-bottom: 15px;
    font-weight: bold;
}

.zd4983service-desc {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.zd4983service-list {
    list-style: none;
    text-align: left;
    margin-top: 20px;
}

.zd4983service-list li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.zd4983service-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.zd4983service-note {
    margin-top: 20px;
    padding: 12px;
    background: #f0f4ff;
    border-left: 3px solid #667eea;
    border-radius: 5px;
    font-size: 14px;
    color: #1e3c72;
    font-weight: 500;
}

/* 核心优势 */
.zd4983advantages {
    padding: 60px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* 对比表格框架 */
.zd4983advantages-comparison {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.zd4983comparison-header,
.zd4983comparison-row {
    display: grid;
    grid-template-columns: 1.5fr 2fr 2fr;
    border-bottom: 1px solid #e8e8e8;
}

.zd4983comparison-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    font-weight: bold;
}

.zd4983comparison-row:last-child {
    border-bottom: none;
}

.zd4983comparison-row:nth-child(even) {
    background: #f9f9f9;
}

.zd4983comparison-row:hover {
    background: #f0f4ff;
}

.zd4983comparison-col {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    font-size: 15px;
    line-height: 1.6;
}

.zd4983comparison-label {
    font-weight: 600;
    color: #333;
    background: #f8f9fa;
}

.zd4983comparison-header .zd4983comparison-label {
    background: transparent;
    color: #fff;
}

.zd4983comparison-others {
    color: #888;
}

.zd4983comparison-us {
    color: #1e3c72;
    font-weight: 500;
}

.zd4983check-mark {
    color: #10b981;
    font-weight: bold;
    font-size: 18px;
    margin-right: 8px;
}

/* 框架式优势展示 */
.zd4983advantages-framework {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.zd4983framework-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 35px;
    color: #fff;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 30px;
    align-items: start;
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
}

.zd4983framework-icon {
    font-size: 64px;
    line-height: 1;
}

.zd4983framework-content {
    flex: 1;
}

.zd4983framework-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #fff;
}

.zd4983framework-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.zd4983stat-box {
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.2);
}

.zd4983stat-value {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 8px;
}

.zd4983stat-text {
    font-size: 13px;
    opacity: 0.9;
}

.zd4983framework-desc {
    font-size: 15px;
    line-height: 1.8;
    opacity: 0.95;
}

/* 优势卡片网格 */
.zd4983framework-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.zd4983framework-card {
    background: #fff;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
    border: 1px solid #e8e8e8;
}

.zd4983framework-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.zd4983card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.zd4983card-icon {
    font-size: 32px;
    line-height: 1;
}

.zd4983card-title {
    font-size: 18px;
    font-weight: bold;
    color: #1e3c72;
    margin: 0;
}

.zd4983card-body {
    flex: 1;
}

.zd4983card-highlight {
    font-size: 20px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 12px;
}

.zd4983card-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin: 0;
}

/* 服务流程 */
.zd4983process {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

/* 流程时间轴框架 */
.zd4983process-timeline {
    position: relative;
    padding: 20px 0;
}

.zd4983process-timeline::before {
    content: '';
    position: absolute;
    left: 45px;
    top: 80px;
    bottom: 80px;
    width: 3px;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    z-index: 1;
}

.zd4983process-step {
    position: relative;
    margin-bottom: 30px;
    z-index: 2;
}

.zd4983process-step:last-child {
    margin-bottom: 0;
}

.zd4983step-wrapper {
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.zd4983step-number {
    width: 90px;
    height: 90px;
    min-width: 90px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: bold;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    position: relative;
    z-index: 3;
    border: 5px solid #fff;
}

.zd4983step-content {
    flex: 1;
    background: #fff;
    border-radius: 12px;
    padding: 25px 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: 1px solid #e8e8e8;
    transition: all 0.3s;
}

.zd4983process-step:hover .zd4983step-content {
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
    transform: translateX(5px);
    border-color: #667eea;
}

.zd4983step-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.zd4983step-icon {
    font-size: 36px;
    line-height: 1;
}

.zd4983step-title {
    font-size: 22px;
    color: #1e3c72;
    font-weight: bold;
    margin: 0;
    flex: 1;
}

.zd4983step-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 10px;
}

.zd4983badge-free {
    background: #e8f5e9;
    color: #2e7d32;
}

.zd4983badge-expert {
    background: #e3f2fd;
    color: #1976d2;
}

.zd4983badge-secure {
    background: #fff3e0;
    color: #f57c00;
}

.zd4983badge-fast {
    background: #f3e5f5;
    color: #7b1fa2;
}

.zd4983badge-success {
    background: #e8f5e9;
    color: #388e3c;
}

.zd4983step-desc {
    color: #666;
    line-height: 1.8;
    font-size: 15px;
    margin-bottom: 18px;
}

.zd4983step-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    background: #f8f9fa;
    padding: 18px;
    border-radius: 8px;
}

.zd4983detail-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.zd4983detail-label {
    font-size: 12px;
    color: #888;
    font-weight: 500;
}

.zd4983detail-value {
    font-size: 14px;
    color: #333;
    font-weight: 600;
}

.zd4983value-highlight {
    color: #667eea;
    font-size: 15px;
}

/* 流程总结卡片 */
.zd4983process-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 50px;
}

.zd4983summary-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 25px;
    color: #fff;
    display: flex;
    gap: 18px;
    align-items: flex-start;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
    transition: transform 0.3s;
}

.zd4983summary-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.zd4983summary-icon {
    font-size: 40px;
    line-height: 1;
    flex-shrink: 0;
}

.zd4983summary-content {
    flex: 1;
}

.zd4983summary-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #fff;
}

.zd4983summary-text {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.95;
    margin: 0;
}


/* 联系我们 */
.zd4983contact {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

/* 联系框架布局 */
.zd4983contact-framework {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 40px;
    align-items: start;
}

/* 联系信息卡片网格 */
.zd4983contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.zd4983contact-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    border: 1px solid #e8e8e8;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.zd4983contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.zd4983card-icon-wrapper {
    margin-bottom: 15px;
}

.zd4983card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.zd4983card-content {
    flex: 1;
}

.zd4983card-title {
    font-size: 18px;
    color: #1e3c72;
    font-weight: bold;
    margin-bottom: 12px;
}

.zd4983card-phone,
.zd4983card-time,
.zd4983card-area-text,
.zd4983card-promise-text {
    font-size: 22px;
    color: #667eea;
    font-weight: bold;
    margin-bottom: 8px;
}

.zd4983card-badge {
    display: inline-block;
    padding: 4px 12px;
    background: #e8f5e9;
    color: #2e7d32;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.zd4983card-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 15px;
}

.zd4983card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.zd4983feature-tag {
    padding: 4px 10px;
    background: #f0f4ff;
    color: #667eea;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

/* 表单区域 */
.zd4983contact-form-wrapper {
    background: #fff;
    border-radius: 12px;
    padding: 35px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border: 1px solid #e8e8e8;
    position: sticky;
    top: 100px;
}

.zd4983form-header {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.zd4983form-title {
    font-size: 24px;
    color: #1e3c72;
    font-weight: bold;
    margin-bottom: 8px;
}

.zd4983form-subtitle {
    font-size: 14px;
    color: #888;
    line-height: 1.6;
}

.zd4983form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.zd4983form-group {
    margin-bottom: 18px;
}

.zd4983form-label {
    display: block;
    font-size: 14px;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
}

.zd4983required {
    color: #f44336;
}

.zd4983form-input,
.zd4983form-textarea,
.zd4983form-select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s;
    background: #fff;
    box-sizing: border-box;
}

.zd4983form-input:focus,
.zd4983form-textarea:focus,
.zd4983form-select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.zd4983form-textarea {
    resize: vertical;
    min-height: 120px;
}

.zd4983form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23667eea' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    padding-right: 40px;
}

.zd4983form-tips {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.zd4983tip-item {
    font-size: 13px;
    color: #666;
    display: flex;
    align-items: center;
    gap: 8px;
}

.zd4983form-button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.zd4983form-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.zd4983button-icon {
    font-size: 18px;
    transition: transform 0.3s;
}

.zd4983form-button:hover .zd4983button-icon {
    transform: translateX(3px);
}

/* 页脚 */
.zd4983footer {
    background: #1e3c72;
    color: #fff;
    padding: 50px 0 20px;
}

.zd4983footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.zd4983footer-title {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: bold;
}

.zd4983footer-text {
    line-height: 1.8;
    opacity: 0.9;
    font-size: 14px;
}

.zd4983footer-list {
    list-style: none;
}

.zd4983footer-list li {
    padding: 8px 0;
    opacity: 0.9;
    font-size: 14px;
}

.zd4983footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.zd4983footer-copyright {
    opacity: 0.8;
    font-size: 14px;
}

/* PC端大屏幕优化 */
@media (min-width: 1400px) {
    .zd4983container {
        max-width: 1400px;
    }

    .zd4983hero-title {
        font-size: 48px;
    }

    .zd4983section-title {
        font-size: 40px;
    }
}

/* 平板端优化 */
@media (max-width: 1200px) and (min-width: 993px) {
    .zd4983hero-wrapper {
        gap: 50px;
    }

    .zd4983services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 移动端：导航栏紧贴logo下方，横向排列 */
    .zd4983header .zd4983container {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

    .zd4983logo {
        width: 100%;
        margin-bottom: 8px;
    }

    .zd4983nav {
        width: 100%;
        margin-top: 8px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
    }

    .zd4983nav-list {
        justify-content: flex-start;
        gap: 18px;
        flex-wrap: nowrap;
        padding-bottom: 5px;
        min-width: max-content;
    }

    .zd4983nav-item {
        flex-shrink: 0;
    }

    .zd4983nav-link {
        font-size: 13px;
        padding: 3px 0;
        border: none;
        background: none;
        text-decoration: none;
        border-bottom: none;
        border-radius: 0;
        white-space: nowrap;
    }

    .zd4983nav-link:hover {
        border-bottom: none;
        background: none;
        opacity: 0.9;
    }

    .zd4983hero-title {
        font-size: 28px;
    }

    .zd4983hero {
        padding: 35px 0;
    }

    .zd4983hero-wrapper {
        grid-template-columns: 1fr;
        gap: 25px;
        text-align: center;
    }

    .zd4983hero-content {
        text-align: center;
    }

    .zd4983hero-subtitle {
        font-size: 16px;
    }

    .zd4983hero-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .zd4983feature-item {
        min-width: auto;
        width: 100%;
    }

    .zd4983hero-image {
        order: -1;
    }

    .zd4983hero-img {
        max-width: 80%;
    }

    .zd4983section-title {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .zd4983section-subtitle {
        font-size: 16px;
        line-height: 1.6;
    }

    .zd4983services {
        padding: 50px 0;
    }

    .zd4983service-card {
        padding: 25px;
    }

    .zd4983service-title {
        font-size: 20px;
    }

    .zd4983service-desc {
        font-size: 14px;
    }

    .zd4983services-grid {
        grid-template-columns: 1fr;
    }

    .zd4983advantages {
        padding: 50px 0;
    }

    .zd4983advantages-comparison {
        margin-bottom: 30px;
    }

    .zd4983comparison-header,
    .zd4983comparison-row {
        grid-template-columns: 1fr;
        display: block;
    }

    .zd4983comparison-col {
        padding: 12px 15px;
        border-bottom: 1px solid #e8e8e8;
    }

    .zd4983comparison-header .zd4983comparison-col {
        border-bottom: 1px solid rgba(255,255,255,0.2);
    }

    .zd4983comparison-row .zd4983comparison-label {
        font-weight: bold;
        background: #e8e8e8;
        border-bottom: none;
    }

    .zd4983comparison-row:last-child .zd4983comparison-col:last-child {
        border-bottom: none;
    }

    .zd4983framework-primary {
        grid-template-columns: 1fr;
        gap: 20px;
        text-align: center;
    }

    .zd4983framework-icon {
        font-size: 48px;
        margin: 0 auto;
    }

    .zd4983framework-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .zd4983framework-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .zd4983framework-title {
        font-size: 24px;
    }

    .zd4983stat-value {
        font-size: 28px;
    }

    .zd4983process {
        padding: 50px 0;
    }

    .zd4983process-timeline::before {
        left: 35px;
        top: 60px;
        bottom: 60px;
    }

    .zd4983step-wrapper {
        gap: 20px;
    }

    .zd4983step-number {
        width: 70px;
        height: 70px;
        min-width: 70px;
        font-size: 24px;
        border-width: 3px;
    }

    .zd4983step-content {
        padding: 20px 25px;
    }

    .zd4983step-header {
        flex-wrap: wrap;
        gap: 10px;
    }

    .zd4983step-icon {
        font-size: 28px;
    }

    .zd4983step-title {
        font-size: 18px;
    }

    .zd4983step-details {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .zd4983process-summary {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 40px;
    }

    .zd4983contact {
        padding: 50px 0;
    }

    .zd4983contact-framework {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .zd4983contact-cards {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .zd4983contact-form-wrapper {
        position: static;
        padding: 30px;
    }

    .zd4983form-row {
        grid-template-columns: 1fr;
    }

    .zd4983form-group {
        margin-bottom: 16px;
    }

    .zd4983form-input,
    .zd4983form-textarea,
    .zd4983form-select {
        font-size: 16px;
    }

    .zd4983header {
        padding: 15px 0;
    }

    .zd4983logo-text {
        font-size: 24px;
    }

    .zd4983logo-subtitle {
        font-size: 12px;
    }

    .zd4983nav-link {
        font-size: 14px;
    }

    .zd4983footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .zd4983footer-text {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .zd4983logo-text {
        font-size: 22px;
    }

    .zd4983header {
        padding: 12px 0;
    }

    .zd4983header .zd4983container {
        gap: 0;
    }

    .zd4983nav {
        margin-top: 6px;
    }

    .zd4983nav-list {
        flex-direction: row;
        gap: 12px;
        width: 100%;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 4px;
        min-width: max-content;
    }

    .zd4983nav-item {
        flex-shrink: 0;
    }

    .zd4983nav-link {
        text-align: left;
        padding: 3px 0;
        background: none;
        border-radius: 0;
        border: none;
        border-bottom: none;
        font-size: 12px;
        text-decoration: none;
        white-space: nowrap;
    }

    .zd4983nav-link:hover {
        border-bottom: none;
        background: none;
        opacity: 0.9;
    }

    .zd4983hero {
        padding: 30px 0;
    }

    .zd4983hero-wrapper {
        gap: 20px;
    }

    .zd4983hero-title {
        margin-bottom: 12px;
    }

    .zd4983hero-subtitle {
        margin-bottom: 12px;
    }

    .zd4983hero-features {
        margin-top: 20px;
        gap: 15px;
    }

    .zd4983hero-title {
        font-size: 22px;
        line-height: 1.3;
    }

    .zd4983hero-subtitle {
        font-size: 15px;
    }

    .zd4983hero-img {
        max-width: 90%;
    }

    .zd4983hero-image {
        padding: 5px;
    }

    .zd4983services,
    .zd4983advantages,
    .zd4983process,
    .zd4983contact {
        padding: 35px 0;
    }

    .zd4983contact-cards {
        gap: 15px;
    }

    .zd4983contact-card {
        padding: 20px;
    }

    .zd4983card-icon {
        width: 45px;
        height: 45px;
        font-size: 20px;
    }

    .zd4983card-phone,
    .zd4983card-time,
    .zd4983card-area-text,
    .zd4983card-promise-text {
        font-size: 18px;
    }

    .zd4983contact-form-wrapper {
        padding: 25px 20px;
    }

    .zd4983form-title {
        font-size: 20px;
    }

    .zd4983form-subtitle {
        font-size: 13px;
    }

    .zd4983process-timeline::before {
        left: 25px;
        display: none;
    }

    .zd4983step-wrapper {
        flex-direction: column;
        gap: 15px;
    }

    .zd4983step-number {
        width: 60px;
        height: 60px;
        min-width: 60px;
        font-size: 20px;
        margin: 0 auto;
    }

    .zd4983step-content {
        padding: 18px 20px;
        text-align: center;
    }

    .zd4983step-header {
        justify-content: center;
        text-align: center;
    }

    .zd4983step-title {
        font-size: 17px;
    }

    .zd4983step-desc {
        font-size: 14px;
    }

    .zd4983process-summary {
        margin-top: 30px;
    }

    .zd4983summary-card {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }

    .zd4983summary-icon {
        font-size: 36px;
        margin: 0 auto;
    }

    .zd4983comparison-col {
        font-size: 14px;
        padding: 10px 12px;
    }

    .zd4983framework-primary {
        padding: 25px 20px;
    }

    .zd4983framework-card {
        padding: 20px;
    }

    .zd4983card-title {
        font-size: 16px;
    }

    .zd4983card-highlight {
        font-size: 16px;
    }

    .zd4983card-desc {
        font-size: 13px;
    }

    .zd4983framework-primary {
        padding: 20px;
    }

    .zd4983framework-title {
        font-size: 20px;
    }

    .zd4983stat-value {
        font-size: 24px;
    }

    .zd4983advantages {
        padding: 40px 0;
    }

    .zd4983process {
        padding: 40px 0;
    }

    .zd4983contact {
        padding: 40px 0;
    }

    .zd4983service-list li {
        font-size: 13px;
        padding: 6px 0;
    }

    .zd4983step-circle {
        width: 60px;
        height: 60px;
        font-size: 20px;
    }

    .zd4983form-button {
        font-size: 15px;
        padding: 14px;
        min-height: 44px; /* 触摸友好的最小高度 */
    }

    .zd4983form-input,
    .zd4983form-textarea,
    .zd4983form-select {
        min-height: 44px; /* 触摸友好的最小高度 */
        font-size: 16px; /* 防止iOS自动缩放 */
    }

    .zd4983form-textarea {
        min-height: 100px;
    }

    .zd4983container {
        padding: 0 15px;
    }

    .zd4983header {
        padding: 12px 0;
    }

    .zd4983logo-text {
        font-size: 20px;
    }

    .zd4983nav-list {
        gap: 12px;
        padding-bottom: 3px;
    }

    .zd4983nav-link {
        font-size: 12px;
        padding: 3px 0;
    }
}