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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.zdad2bcontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.zdad2bheader {
    background-color: #00B900;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.zdad2bheader .zdad2bcontainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.zdad2blogo h1 {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

/* 汉堡菜单按钮 */
.zdad2bmenu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.zdad2bmenu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: all 0.3s ease;
}

.zdad2bmain-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.zdad2bmain-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.zdad2bmain-nav a:hover {
    opacity: 0.8;
    background-color: rgba(255, 255, 255, 0.1);
}

/* 主要内容区域 */
main {
    margin-top: 70px;
}

/* 英雄区域 */
.zdad2bhero {
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
    padding: 6rem 0 4rem;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.zdad2bhero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.zdad2bhero-text {
    z-index: 2;
}

.zdad2bhero-text h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.zdad2bhero-text p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.zdad2bhero-image {
    position: relative;
    z-index: 1;
}

.zdad2bhero-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.zdad2bfloating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 按钮样式 */
.zdad2bbtn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s;
    margin: 0 0.5rem;
}

.zdad2bbtn:hover {
    transform: translateY(-2px);
}

.zdad2bbtn-primary {
    background-color: white;
    color: #00B900;
}

.zdad2bbtn-secondary {
    background-color: transparent;
    border: 2px solid white;
    color: white;
}

/* 特色功能区域 */
.zdad2bfeatures {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zdad2bfeatures h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zdad2bfeatures-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.zdad2bfeature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.zdad2bfeature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.zdad2bfeature-card.zdad2bprimary {
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
}

.zdad2bfeature-card.zdad2bprimary h3,
.zdad2bfeature-card.zdad2bprimary .zdad2bfeature-icon {
    color: white;
}

.zdad2bfeature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.zdad2bfeature-card h3 {
    color: #00B900;
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.zdad2bfeature-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.zdad2bfeature-details {
    list-style: none;
    padding: 0;
    margin: 0;
    margin-top: auto;
}

.zdad2bfeature-details li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #555;
}

.zdad2bfeature-details li:before {
    content: "✓";
    color: #00B900;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.zdad2bfeature-card.zdad2bprimary .zdad2bfeature-details li {
    color: rgba(255, 255, 255, 0.9);
}

.zdad2bfeature-card.zdad2bprimary .zdad2bfeature-details li:before {
    color: white;
}

/* 响应式设计优化 */
/* 大屏幕 (1200px以上) */
@media (min-width: 1200px) {
    .zdad2bfeatures-grid {
        gap: 2.5rem;
    }
    
    .zdad2bfeature-card {
        padding: 2.5rem;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (max-width: 1199px) {
    .zdad2bfeatures-grid {
        gap: 2rem;
    }
    
    .zdad2bfeature-card {
        padding: 2rem;
    }
}

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .zdad2bmenu-toggle {
        display: block;
    }

    .zdad2bmain-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: #00B900;
        padding: 5rem 2rem 2rem;
        transition: right 0.3s ease;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    }

    .zdad2bmain-nav.zdad2bactive {
        right: 0;
    }

    .zdad2bmain-nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .zdad2bmain-nav a {
        display: block;
        padding: 1rem;
        text-align: center;
        border-radius: 8px;
        background-color: rgba(255, 255, 255, 0.1);
    }

    .zdad2bmain-nav a:hover {
        background-color: rgba(255, 255, 255, 0.2);
    }

    /* 汉堡菜单动画 */
    .zdad2bmenu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .zdad2bmenu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .zdad2bmenu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* 遮罩层 */
    .zdad2bnav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .zdad2bnav-overlay.zdad2bactive {
        display: block;
    }

    .zdad2bfeatures-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .zdad2bfeature-card {
        padding: 1.8rem;
    }
    
    .zdad2bfeature-icon {
        font-size: 2.2rem;
    }
    
    .zdad2bfeature-card h3 {
        font-size: 1.3rem;
    }
}

/* 大手机 (576px - 767px) */
@media (max-width: 767px) {
    .zdad2bfeatures {
        padding: 3rem 0;
    }
    
    .zdad2bfeatures h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .zdad2bfeatures-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .zdad2bfeature-card {
        padding: 1.5rem;
    }
    
    .zdad2bfeature-icon {
        font-size: 2rem;
    }
    
    .zdad2bfeature-card h3 {
        font-size: 1.2rem;
    }
    
    .zdad2bfeature-card p {
        font-size: 0.95rem;
        margin-bottom: 1rem;
    }
    
    .zdad2bfeature-details li {
        font-size: 0.9rem;
        margin-bottom: 0.6rem;
    }
}

/* 小手机 (575px以下) */
@media (max-width: 575px) {
    .zdad2blogo h1 {
        font-size: 1.2rem;
    }

    .zdad2bmain-nav {
        width: 100%;
        max-width: none;
    }

    .zdad2bmain-nav a {
        font-size: 1rem;
        padding: 0.8rem;
    }

    .zdad2bfeatures-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .zdad2bfeature-card {
        padding: 1.5rem;
    }
    
    .zdad2bfeature-icon {
        font-size: 1.8rem;
    }
    
    .zdad2bfeature-card h3 {
        font-size: 1.1rem;
    }
    
    .zdad2bfeature-card p {
        font-size: 0.9rem;
    }
    
    .zdad2bfeature-details li {
        font-size: 0.85rem;
    }
}

/* 指南区域样式 */
.zdad2bguide {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zdad2bguide h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zdad2bguide-layout {
    max-width: 1200px;
    margin: 0 auto;
}

.zdad2bguide-main {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 2rem;
}

.zdad2bguide-requirements {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zdad2bguide-steps {
    padding: 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.zdad2bguide-step {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.zdad2bguide-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.zdad2bstep-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.zdad2bstep-number {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.zdad2bguide-step h4 {
    color: #333;
    font-size: 1.3rem;
    margin: 0;
}

.zdad2bguide-step p {
    color: #666;
    margin: 0;
    font-size: 0.95rem;
}

.zdad2bstep-details {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0 0;
    text-align: left;
    width: 100%;
}

.zdad2bstep-details li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #555;
    font-size: 0.9rem;
}

.zdad2bstep-details li:before {
    content: "✓";
    color: #00B900;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.zdad2bguide-side {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.zdad2bguide-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    overflow: hidden;
}

.zdad2bcard-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
}

.zdad2bcard-header h4 {
    margin: 0;
    font-size: 1.3rem;
}

.zdad2bcard-body {
    padding: 1.5rem;
}

.zdad2bsystem-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.zdad2bsystem-tab {
    flex: 1;
    padding: 0.8rem;
    border: none;
    background: #f8f9fa;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.zdad2bsystem-tab.zdad2bactive {
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
}

.zdad2btab-icon {
    font-size: 1.2rem;
}

.zdad2bsystem-content {
    display: none;
}

.zdad2bsystem-content.zdad2bactive {
    display: block;
}

.zdad2bsystem-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zdad2bsystem-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #555;
}

.zdad2bsystem-list li:before {
    content: "•";
    color: #00B900;
    position: absolute;
    left: 0;
}

.zdad2btips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zdad2btips-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.zdad2btips-list li:last-child {
    margin-bottom: 0;
}

.zdad2btip-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.zdad2btips-list p {
    margin: 0;
    color: #555;
}

/* 响应式设计 */
@media (max-width: 991px) {
    .zdad2bguide-requirements {
        grid-template-columns: 1fr;
        max-width: 800px;
    }

    .zdad2bguide-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .zdad2bguide-steps {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .zdad2bguide-step {
        padding: 1.5rem;
    }

    .zdad2bstep-icon {
        font-size: 2rem;
    }

    .zdad2bstep-number {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }

    .zdad2bguide-step h4 {
        font-size: 1.2rem;
    }

    .zdad2bguide-step p {
        font-size: 0.9rem;
    }

    .zdad2bstep-details li {
        font-size: 0.85rem;
    }
}

/* 动画效果 */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.zdad2bguide-step {
    animation: slideIn 0.5s ease-out forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

.zdad2bsystem-content {
    animation: fadeIn 0.3s ease-out forwards;
}

/* 页脚样式 */
.zdad2bfooter {
    background-color: #333;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

/* 版本信息样式 */
.zdad2bversion-info {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.zdad2bversion-info p {
    margin: 0.5rem 0;
}

/* 版本说明区域 */
.zdad2bversion {
    padding: 4rem 0;
    background-color: #f5f5f5;
}

.zdad2bversion h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zdad2bversion-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zdad2bversion-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.zdad2bversion-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.zdad2bversion-card.zdad2bprimary {
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
}

.zdad2bversion-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-header {
    border-bottom-color: rgba(255,255,255,0.2);
}

.zdad2bversion-icon {
    font-size: 2rem;
}

.zdad2bversion-header h3 {
    margin: 0;
    font-size: 1.4rem;
    color: #333;
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-header h3 {
    color: white;
}

.zdad2bversion-tag {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-left: auto;
}

.zdad2bversion-content {
    padding: 1.5rem;
}

.zdad2bversion-info {
    margin-bottom: 1.5rem;
}

.zdad2bversion-number,
.zdad2bversion-date {
    margin: 0.5rem 0;
    color: #666;
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-number,
.zdad2bversion-card.zdad2bprimary .zdad2bversion-date {
    color: rgba(255,255,255,0.9);
}

.zdad2bversion-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.zdad2bversion-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: #555;
}

.zdad2bversion-features li:before {
    content: "✓";
    color: #00B900;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-features li {
    color: rgba(255,255,255,0.9);
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-features li:before {
    color: white;
}

.zdad2bversion-requirements {
    background: rgba(0,0,0,0.03);
    padding: 1rem;
    border-radius: 10px;
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-requirements {
    background: rgba(255,255,255,0.1);
}

.zdad2bversion-requirements h4 {
    margin: 0 0 1rem 0;
    color: #333;
    font-size: 1.1rem;
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-requirements h4 {
    color: white;
}

.zdad2bversion-requirements ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zdad2bversion-requirements li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #666;
    font-size: 0.95rem;
}

.zdad2bversion-requirements li:before {
    content: "•";
    color: #00B900;
    position: absolute;
    left: 0;
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-requirements li {
    color: rgba(255,255,255,0.9);
}

.zdad2bversion-card.zdad2bprimary .zdad2bversion-requirements li:before {
    color: white;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .zdad2bversion-grid {
        gap: 1.5rem;
    }
}

@media (max-width: 991px) {
    .zdad2bversion-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .zdad2bversion {
        padding: 3rem 0;
    }

    .zdad2bversion h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .zdad2bversion-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .zdad2bversion-header {
        padding: 1.2rem;
    }

    .zdad2bversion-content {
        padding: 1.2rem;
    }

    .zdad2bversion-icon {
        font-size: 1.8rem;
    }

    .zdad2bversion-header h3 {
        font-size: 1.2rem;
    }

    .zdad2bversion-features li,
    .zdad2bversion-requirements li {
        font-size: 0.9rem;
    }
}

/* 系统要求样式 */
.zdad2bsystem-requirements {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.zdad2bsystem-requirements h3 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.zdad2brequirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.zdad2brequirement-item {
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 8px;
}

.zdad2brequirement-item h4 {
    color: #00B900;
    margin-bottom: 1rem;
}

.zdad2brequirement-item ul {
    list-style: none;
    padding-left: 1rem;
}

.zdad2brequirement-item ul li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.zdad2brequirement-item ul li:before {
    content: "✓";
    color: #00B900;
    position: absolute;
    left: 0;
}

/* 更新下载按钮样式 */
.zdad2bdownload-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.zdad2bfeature-card {
    animation: fadeIn 0.5s ease-out forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

.zdad2bversion-card {
    animation: fadeIn 0.5s ease-out forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

/* 指南区域响应式设计 */
/* 大屏幕 (1200px以上) */
@media (min-width: 1200px) {
    .zdad2bguide-wrapper {
        gap: 2.5rem;
    }

    .zdad2bguide-main,
    .zdad2bguide-side {
        padding: 2.5rem;
    }

    .zdad2bstep-card {
        padding: 2rem;
    }

    .zdad2bstep-content h3 {
        font-size: 1.4rem;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (max-width: 1199px) {
    .zdad2bguide-wrapper {
        gap: 2rem;
    }

    .zdad2bguide-main,
    .zdad2bguide-side {
        padding: 2rem;
    }

    .zdad2bstep-card {
        padding: 1.8rem;
    }
}

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .zdad2bguide-wrapper {
        grid-template-columns: 1fr;
        max-width: 800px;
        margin: 0 auto;
    }

    .zdad2bguide-main,
    .zdad2bguide-side {
        padding: 1.8rem;
    }

    .zdad2bguide-steps {
        gap: 1.5rem;
    }

    .zdad2bstep-card {
        padding: 1.5rem;
    }

    .zdad2brequirements-tabs {
        flex-wrap: wrap;
    }

    .zdad2btab {
        flex: 1;
        min-width: 200px;
        justify-content: center;
    }
}

/* 大手机 (576px - 767px) */
@media (max-width: 767px) {
    .zdad2bguide {
        padding: 2.5rem 0;
    }

    .zdad2bguide h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .zdad2bguide-main,
    .zdad2bguide-side {
        padding: 1.5rem;
    }

    .zdad2bguide-steps {
        gap: 1.2rem;
    }

    .zdad2bstep-card {
        flex-direction: column;
        gap: 1rem;
        padding: 1.2rem;
    }

    .zdad2bstep-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .zdad2bstep-content h3 {
        font-size: 1.2rem;
    }

    .zdad2bstep-content p {
        font-size: 0.95rem;
    }

    .zdad2bstep-details li {
        font-size: 0.9rem;
    }

    .zdad2brequirements-tabs {
        flex-direction: column;
        gap: 0.8rem;
    }

    .zdad2btab {
        width: 100%;
        padding: 0.8rem;
    }

    .zdad2brequirement-card {
        padding: 1.2rem;
    }

    .zdad2brequirement-card h4 {
        font-size: 1.1rem;
    }

    .zdad2brequirement-card li {
        font-size: 0.9rem;
    }

    .zdad2btips-list li {
        padding: 0.8rem;
    }

    .zdad2btip-icon {
        font-size: 1.3rem;
    }

    .zdad2btips-list p {
        font-size: 0.9rem;
    }
}

/* 小手机 (575px以下) */
@media (max-width: 575px) {
    .zdad2bguide {
        padding: 2rem 0;
    }

    .zdad2bguide h2 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }

    .zdad2bguide-main,
    .zdad2bguide-side {
        padding: 1.2rem;
    }

    .zdad2bguide-steps {
        gap: 1rem;
    }

    .zdad2bstep-card {
        padding: 1rem;
    }

    .zdad2bstep-number {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }

    .zdad2bstep-content h3 {
        font-size: 1.1rem;
    }

    .zdad2bstep-content p {
        font-size: 0.9rem;
        margin-bottom: 0.8rem;
    }

    .zdad2bstep-details li {
        font-size: 0.85rem;
        margin-bottom: 0.4rem;
    }

    .zdad2bsystem-requirements h3,
    .zdad2bguide-tips h3 {
        font-size: 1.2rem;
        margin-bottom: 1.2rem;
    }

    .zdad2btab {
        padding: 0.7rem;
        font-size: 0.9rem;
    }

    .zdad2btab-icon {
        font-size: 1.1rem;
    }

    .zdad2brequirement-card {
        padding: 1rem;
    }

    .zdad2brequirement-card h4 {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    .zdad2brequirement-card li {
        font-size: 0.85rem;
        margin-bottom: 0.4rem;
    }

    .zdad2btips-list li {
        padding: 0.7rem;
        margin-bottom: 0.8rem;
    }

    .zdad2btip-icon {
        font-size: 1.2rem;
    }

    .zdad2btips-list p {
        font-size: 0.85rem;
    }
}

/* 动画效果 */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.zdad2bstep-card {
    animation: slideIn 0.5s ease-out forwards;
    animation-delay: calc(var(--animation-order) * 0.1s);
}

.zdad2btab-content {
    animation: fadeIn 0.3s ease-out forwards;
}

/* 交互效果 */
.zdad2btab {
    position: relative;
    overflow: hidden;
}

.zdad2btab::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #00B900;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.zdad2btab:hover::after {
    transform: scaleX(1);
}

.zdad2btab.zdad2bactive::after {
    transform: scaleX(1);
}

.zdad2bstep-card {
    position: relative;
    overflow: hidden;
}

.zdad2bstep-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, #00B900, #00A000);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.zdad2bstep-card:hover::before {
    opacity: 1;
}

/* 响应式设计 */
@media (max-width: 991px) {
    .zdad2bheader .zdad2bcontainer {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .zdad2bmain-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .zdad2bhero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .zdad2bhero-text h2 {
        font-size: 2.5rem;
    }

    .zdad2bhero-image {
        order: -1;
    }

    .zdad2bhero-image img {
        max-width: 300px;
        margin: 0 auto;
    }

    .zdad2bfeatures-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .zdad2bversion-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .zdad2bguide-steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .zdad2bguide-requirements {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .zdad2bcontainer {
        padding: 0 15px;
    }

    .zdad2bhero {
        padding: 4rem 0 2rem;
    }

    .zdad2bhero-text h2 {
        font-size: 2rem;
    }

    .zdad2bhero-text p {
        font-size: 1.1rem;
    }

    .zdad2bhero-image img {
        max-width: 250px;
    }

    .zdad2bdownload-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .zdad2bbtn {
        width: 100%;
        text-align: center;
    }

    .zdad2bfeatures-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .zdad2bversion-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .zdad2bguide-steps {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .zdad2bsystem-tabs {
        flex-direction: column;
        gap: 0.5rem;
    }

    .zdad2bsystem-tab {
        width: 100%;
    }
}

@media (max-width: 575px) {
    .zdad2bheader {
        padding: 0.8rem 0;
    }

    .zdad2blogo h1 {
        font-size: 1.2rem;
    }

    .zdad2bmain-nav ul {
        gap: 0.5rem;
    }

    .zdad2bmain-nav a {
        font-size: 0.9rem;
        padding: 0.5rem;
    }

    .zdad2bhero {
        padding: 3rem 0 2rem;
    }

    .zdad2bhero-text h2 {
        font-size: 1.8rem;
    }

    .zdad2bhero-text p {
        font-size: 1rem;
    }

    .zdad2bhero-image img {
        max-width: 200px;
    }

    .zdad2bversion-info {
        font-size: 0.9rem;
    }

    .features h2,
    .version h2,
    .zdad2bguide h2 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }

    .zdad2bfeature-card,
    .zdad2bversion-card,
    .zdad2bguide-card {
        padding: 1.2rem;
    }

    .zdad2bfeature-icon,
    .zdad2bversion-icon,
    .zdad2bstep-icon {
        font-size: 1.8rem;
    }

    .zdad2bfeature-card h3,
    .zdad2bversion-header h3,
    .zdad2bguide-step h4 {
        font-size: 1.1rem;
    }

    .zdad2bfeature-card p,
    .zdad2bversion-content p,
    .zdad2bguide-step p {
        font-size: 0.9rem;
    }

    .zdad2bfeature-details li,
    .zdad2bversion-features li,
    .zdad2bstep-details li {
        font-size: 0.85rem;
    }

    .zdad2btips-list li {
        padding: 0.8rem;
    }

    .zdad2btip-icon {
        font-size: 1.2rem;
    }

    .zdad2btips-list p {
        font-size: 0.85rem;
    }
}

/* 大屏幕优化 */
@media (min-width: 1200px) {
    .zdad2bcontainer {
        max-width: 1400px;
    }

    .zdad2bhero-content {
        gap: 4rem;
    }

    .zdad2bhero-text h2 {
        font-size: 3.5rem;
    }

    .zdad2bhero-text p {
        font-size: 1.4rem;
    }

    .zdad2bhero-image img {
        max-width: 450px;
    }

    .zdad2bfeatures-grid,
    .zdad2bversion-grid {
        gap: 2.5rem;
    }

    .zdad2bfeature-card,
    .zdad2bversion-card {
        padding: 2.5rem;
    }

    .zdad2bguide-steps {
        gap: 2rem;
    }

    .zdad2bguide-step {
        padding: 2rem;
    }
}

/* 动画优化 */
@media (prefers-reduced-motion: reduce) {
    .floating,
    .zdad2bfeature-card,
    .zdad2bversion-card,
    .zdad2bguide-step {
        animation: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #fff;
    }

    .zdad2bfeature-card,
    .zdad2bversion-card,
    .zdad2bguide-card {
        background-color: #2d2d2d;
        box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    }

    .zdad2bfeature-card p,
    .zdad2bversion-content p,
    .zdad2bguide-step p {
        color: #ccc;
    }

    .zdad2bfeature-details li,
    .zdad2bversion-features li,
    .zdad2bstep-details li {
        color: #ddd;
    }

    .zdad2bsystem-tab {
        background-color: #333;
        color: #fff;
    }

    .zdad2btips-list li {
        background-color: #333;
    }
}

/* 下载中心样式 */
.zdad2bdownload {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zdad2bdownload h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zdad2bdownload-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zdad2bdownload-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.zdad2bdownload-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.zdad2bdownload-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.zdad2bdownload-card h3 {
    color: #333;
    font-size: 1.4rem;
    margin: 0;
}

.zdad2bdownload-card p {
    color: #666;
    margin: 0;
    font-size: 0.95rem;
}

.zdad2bdownload-info {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    width: 100%;
}

.zdad2bdownload-info p {
    margin: 0.3rem 0;
    color: #555;
    font-size: 0.9rem;
}

.zdad2bdownload-card .zdad2bbtn {
    width: 100%;
    margin-top: auto;
}

/* 下载中心响应式设计 */
@media (max-width: 1200px) {
    .zdad2bdownload-grid {
        gap: 1.5rem;
    }
}

@media (max-width: 991px) {
    .zdad2bdownload-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
    }
}

@media (max-width: 768px) {
    .zdad2bdownload {
        padding: 3rem 0;
    }

    .zdad2bdownload h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .zdad2bdownload-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .zdad2bdownload-card {
        padding: 1.5rem;
    }

    .zdad2bdownload-icon {
        font-size: 2.5rem;
    }

    .zdad2bdownload-card h3 {
        font-size: 1.2rem;
    }

    .zdad2bdownload-card p {
        font-size: 0.9rem;
    }

    .zdad2bdownload-info {
        padding: 0.8rem;
    }

    .zdad2bdownload-info p {
        font-size: 0.85rem;
    }
}

@media (max-width: 575px) {
    .zdad2bdownload {
        padding: 2rem 0;
    }

    .zdad2bdownload h2 {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }

    .zdad2bdownload-card {
        padding: 1.2rem;
    }

    .zdad2bdownload-icon {
        font-size: 2rem;
    }

    .zdad2bdownload-card h3 {
        font-size: 1.1rem;
    }

    .zdad2bdownload-info {
        padding: 0.7rem;
    }
}

/* 友情链接样式 */
.zdad2bfriend-links {
    margin: 2rem 0;
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.zdad2bfriend-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.zdad2bfriend-links li {
    margin: 0;
}

.zdad2bfriend-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.zdad2bfriend-links a:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

/* 友情链接响应式设计 */
@media (max-width: 768px) {
    .zdad2bfriend-links ul {
        gap: 0.5rem;
    }

    .zdad2bfriend-links a {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 575px) {
    .zdad2bfriend-links {
        margin: 1.5rem 0;
    }

    .zdad2bfriend-links ul {
        flex-direction: column;
        align-items: center;
    }

    .zdad2bfriend-links a {
        display: block;
        width: 100%;
        text-align: center;
    }
}