/* 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;
}

.zb2903container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.zb2903header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.zb2903header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.zb2903logo h1 {
    font-size: 24px;
    color: #1a73e8;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}

.main-nav {
    /* 参考原zb2903main-nav的样式内容 */
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 48px;
    margin: 0 24px 0 0;
    padding: 0 8px;
    justify-content: flex-end;
}

.main-nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    padding: 5px 0;
    position: relative;
}

.main-nav a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #1a73e8;
    transition: width 0.3s ease;
}

.main-nav a:hover {
    color: #1a73e8;
}

.main-nav a:hover:after {
    width: 100%;
}

/* 移动端导航样式 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
        position: absolute;
        right: 20px;
        top: 20px;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

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

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 280px;
        height: 100vh;
        background-color: #fff;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        z-index: 1000;
        overflow-y: auto;
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        padding: 70px 15px 20px;
        gap: 10px;
    }

    .main-nav a {
        display: block;
        padding: 10px 12px;
        border-radius: 6px;
        transition: all 0.3s ease;
        font-size: 0.95em;
    }

    .main-nav a:hover {
        background-color: #f0f4f8;
    }

    .main-nav a:after {
        display: none;
    }

    /* 添加遮罩层 */
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .nav-overlay.active {
        display: block;
        opacity: 1;
    }

    .zb2903hero {
        padding: 62px 0 12px;
    }

    .zb2903hero-content {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .zb2903hero-text {
        max-width: 100%;
        padding: 0 8px;
    }

    .zb2903hero-content h2 {
        font-size: 1.5em;
        line-height: 1.2;
        margin-bottom: 8px;
    }

    .zb2903hero-content p {
        font-size: 0.95em;
        margin-bottom: 12px;
    }

    .zb2903hero-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        margin: 12px 0;
        padding: 0 4px;
    }

    .stat-item {
        text-align: center;
        padding: 5px 3px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 4px;
    }

    .stat-number {
        font-size: 1.1em;
        margin-bottom: 2px;
        font-weight: 600;
    }

    .stat-label {
        font-size: 0.7em;
        opacity: 0.9;
    }

    .zb2903hero-image {
        max-width: 220px;
        margin: 0 auto;
        padding: 0 8px;
    }

    .zb2903hero-img {
        transform: none;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }

    .zb2903download-buttons {
        display: flex;
        flex-direction: column;
        gap: 8px;
        padding: 0 12px;
        margin-top: 12px;
    }

    .zb2903btn {
        width: 100%;
        text-align: center;
        padding: 8px 12px;
        font-size: 0.9em;
    }

    .zb2903btn-secondary {
        margin-left: 0;
    }

    .zb2903logo h1 {
        font-size: 20px;
        margin-bottom: 4px;
        padding-top: 2px;
        padding-bottom: 2px;
    }

    .zb2903header .container {
        flex-direction: column;
        height: auto;
        padding: 8px 10px 8px 10px;
    }
}

@media (max-width: 480px) {
    .mobile-menu-btn {
        right: 15px;
        top: 15px;
    }

    .main-nav {
        width: 85%;
        max-width: 260px;
    }

    .main-nav ul {
        padding: 60px 12px 15px;
        gap: 8px;
    }

    .main-nav a {
        padding: 8px 10px;
        font-size: 0.9em;
    }

    .zb2903hero {
        padding: 40px 0 4px;
    }

    .zb2903hero-content {
        gap: 6px;
    }

    .zb2903hero-text {
        padding: 0 2px;
    }

    .zb2903hero-content h2 {
        font-size: 1.1em;
        margin-bottom: 2px;
    }

    .zb2903hero-content p {
        font-size: 0.8em;
        margin-bottom: 4px;
    }

    .zb2903hero-stats {
        gap: 4px;
        margin: 10px 0;
    }

    .stat-item {
        padding: 4px 2px;
    }

    .stat-number {
        font-size: 1em;
    }

    .stat-label {
        font-size: 0.65em;
    }

    .zb2903hero-image {
        max-width: 180px;
        padding: 0 6px;
    }

    .zb2903download-buttons {
        gap: 4px;
        padding: 0 2px;
        margin-top: 4px;
    }

    .zb2903btn {
        padding: 5px 6px;
        font-size: 0.8em;
    }

    .zb2903logo h1 {
        font-size: 18px;
        margin-bottom: 2px;
        padding-top: 0;
        padding-bottom: 0;
    }

    .zb2903header .container {
        height: 44px;
    }
}

/* 响应式调整 */
@media (max-width: 480px) {
    .zb2903header .container {
        height: 60px;
    }

    .zb2903logo h1 {
        font-size: 20px;
    }

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

    .main-nav ul {
        padding: 70px 15px 15px;
    }
}

/* 英雄区域样式 */
.zb2903hero {
    background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
    color: white;
    padding: 100px 0 30px;
    position: relative;
    overflow: hidden;
}

.zb2903hero .container {
    position: relative;
    z-index: 2;
}

.zb2903hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.zb2903hero-text {
    flex: 1;
    max-width: 600px;
}

.zb2903hero-image {
    flex: 1;
    max-width: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.zb2903hero-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.3s ease;
}

.zb2903hero-img:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.zb2903hero-content h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
    line-height: 1.2;
}

.zb2903hero-content p {
    font-size: 1.2em;
    margin-bottom: 30px;
    opacity: 0.9;
}

.zb2903hero-stats {
    display: flex;
    gap: 40px;
    margin: 40px 0;
}

.stat-item {
    text-align: left;
}

.stat-number {
    display: block;
    font-size: 2.5em;
    font-weight: bold;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #fff, #e3f2fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 1.1em;
    opacity: 0.9;
}

.zb2903download-buttons {
    margin-top: 30px;
}

/* 按钮样式 */
.zb2903btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.zb2903btn-primary {
    background-color: #fff;
    color: #1a73e8;
}

.zb2903btn-secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
    margin-left: 15px;
}

.zb2903btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 特性区域样式 */
.zb2903features {
    padding: 80px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.zb2903section-title {
    text-align: center;
    font-size: 2em;
    margin-bottom: 50px;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.zb2903section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #1a73e8;
}

.zb2903features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.zb2903feature-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    min-height: 280px;
    border: 1px solid #e8e8e8;
    position: relative;
    overflow: hidden;
}

.zb2903feature-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #1a73e8, #0d47a1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.zb2903feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.zb2903feature-card:hover:before {
    opacity: 1;
}

.zb2903feature-icon {
    font-size: 2.5em;
    margin-bottom: 15px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1a73e8;
}

.zb2903feature-card h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: #333;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.zb2903feature-card p {
    color: #666;
    margin-bottom: 15px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1em;
}

.zb2903feature-list {
    list-style: none;
    margin-top: auto;
    text-align: left;
    padding: 0 20px;
    border-top: 1px solid #f0f0f0;
    padding-top: 15px;
}

.zb2903feature-list li {
    margin: 8px 0;
    padding-left: 20px;
    position: relative;
    color: #666;
    line-height: 1.3;
    font-size: 0.95em;
}

.zb2903feature-list li:before {
    content: "✓";
    color: #1a73e8;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.zb2903features-summary {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(to right, rgba(26,115,232,0.05), rgba(13,71,161,0.05));
    border-radius: 10px;
    border: 1px solid rgba(26,115,232,0.1);
}

.zb2903features-summary p {
    color: #333;
    font-size: 1.1em;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

/* 响应式设计优化 */
@media (max-width: 1200px) {
    .zb2903container {
        max-width: 960px;
        padding: 0 15px;
    }

    .zb2903hero-content {
        gap: 30px;
    }

    .zb2903hero-text {
        max-width: 500px;
    }

    .zb2903hero-image {
        max-width: 450px;
    }

    .zb2903features-grid,
    .zb2903products-grid,
    .zb2903guide-grid,
    .zb2903faq-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 991px) {
    .zb2903container {
        max-width: 720px;
    }

    .zb2903header .container {
        padding: 0 15px;
    }

    .main-nav ul {
        gap: 20px;
    }

    .zb2903hero {
        padding: 140px 0 70px;
    }

    .zb2903hero-content {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .zb2903hero-text {
        max-width: 100%;
    }

    .zb2903hero-image {
        max-width: 400px;
        margin: 0 auto;
    }

    .zb2903hero-stats {
        justify-content: center;
        gap: 30px;
    }

    .stat-item {
        text-align: center;
    }

    .zb2903section-title {
        font-size: 1.8em;
        margin-bottom: 40px;
    }

    .zb2903feature-card,
    .zb2903product-card,
    .zb2903guide-card,
    .zb2903faq-card {
        padding: 25px;
    }

    .zb2903download-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .zb2903footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .zb2903container {
        max-width: 540px;
    }

    .zb2903header {
        position: relative;
    }

    .zb2903header .container {
        flex-direction: column;
        height: auto;
        padding: 8px 10px 8px 10px;
    }

    .zb2903logo h1 {
        font-size: 20px;
        margin-bottom: 4px;
        padding-top: 2px;
        padding-bottom: 2px;
    }

    .main-nav ul {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .zb2903hero {
        padding: 62px 0 12px;
    }

    .zb2903hero-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .zb2903hero-text {
        max-width: 100%;
        padding: 0 15px;
    }

    .zb2903hero-content h2 {
        font-size: 1.8em;
        line-height: 1.3;
        margin-bottom: 15px;
    }

    .zb2903hero-content p {
        font-size: 1.1em;
        margin-bottom: 20px;
    }

    .zb2903hero-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
        margin: 20px 0;
        padding: 0 10px;
    }

    .stat-item {
        text-align: center;
        padding: 8px 5px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 6px;
    }

    .stat-number {
        font-size: 1.4em;
        margin-bottom: 3px;
        font-weight: 600;
    }

    .stat-label {
        font-size: 0.8em;
        opacity: 0.9;
    }

    .zb2903hero-image {
        max-width: 280px;
        margin: 0 auto;
        padding: 0 15px;
    }

    .zb2903hero-img {
        transform: none;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }

    .zb2903download-buttons {
        display: flex;
        flex-direction: column;
        gap: 12px;
        padding: 0 20px;
    }

    .zb2903btn {
        width: 100%;
        text-align: center;
        padding: 12px 20px;
    }

    .zb2903btn-secondary {
        margin-left: 0;
    }

    .zb2903features-grid,
    .zb2903products-grid,
    .zb2903guide-grid,
    .zb2903faq-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .zb2903feature-card,
    .zb2903product-card,
    .zb2903guide-card,
    .zb2903faq-card {
        min-height: auto;
    }

    .zb2903feature-icon,
    .zb2903product-icon,
    .zb2903guide-icon,
    .zb2903faq-icon {
        font-size: 2.2em;
        width: 45px;
        height: 45px;
    }

    .zb2903download-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .zb2903download-card {
        min-height: auto;
    }

    .zb2903guide-features,
    .zb2903faq-features {
        grid-template-columns: 1fr;
    }

    .zb2903footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .zb2903social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .zb2903container {
        padding: 0 10px;
    }

    .zb2903hero-content h2 {
        font-size: 1.6em;
    }

    .zb2903hero-content p {
        font-size: 1em;
    }

    .zb2903hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
        margin: 15px 0;
        padding: 0 5px;
    }

    .stat-item {
        padding: 6px 4px;
        border-radius: 4px;
    }

    .stat-number {
        font-size: 1.2em;
        margin-bottom: 2px;
    }

    .stat-label {
        font-size: 0.75em;
    }

    .zb2903hero-image {
        max-width: 240px;
    }

    .zb2903btn {
        padding: 10px 15px;
        font-size: 0.95em;
    }

    .zb2903section-title {
        font-size: 1.6em;
        margin-bottom: 30px;
    }

    .zb2903feature-card h3,
    .zb2903product-card h3,
    .zb2903guide-card h3,
    .zb2903faq-card h3 {
        font-size: 1.3em;
    }

    .zb2903feature-card p,
    .zb2903product-card p,
    .zb2903guide-card p,
    .zb2903faq-card p {
        font-size: 1em;
    }
}

/* 修复特定设备上的显示问题 */
@media (min-width: 992px) and (max-width: 1199px) {
    .zb2903hero-content {
        max-width: 960px;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .zb2903hero-content {
        max-width: 720px;
    }
}

@media (min-width: 576px) and (max-width: 767px) {
    .zb2903hero-content {
        max-width: 540px;
    }
}

/* 确保图片在移动端正确显示 */
@media (max-width: 768px) {
    .zb2903hero-img {
        transform: none;
    }
    
    .zb2903hero-img:hover {
        transform: none;
    }
}

/* 产品服务样式 */
.zb2903products {
    padding: 80px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.zb2903products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.zb2903product-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    min-height: 280px;
    border: 1px solid #e8e8e8;
    position: relative;
    overflow: hidden;
}

.zb2903product-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #1a73e8, #0d47a1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.zb2903product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.zb2903product-card:hover:before {
    opacity: 1;
}

.zb2903product-icon {
    font-size: 2.5em;
    margin-bottom: 15px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1a73e8;
}

.zb2903product-card h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: #333;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.zb2903product-desc {
    color: #666;
    margin-bottom: 15px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1em;
}

.zb2903product-features {
    list-style: none;
    margin-top: auto;
    text-align: left;
    padding: 0 20px;
    border-top: 1px solid #f0f0f0;
    padding-top: 15px;
}

.zb2903product-features li {
    margin: 8px 0;
    padding-left: 20px;
    position: relative;
    color: #666;
    line-height: 1.3;
    font-size: 0.95em;
}

.zb2903product-features li:before {
    content: "✓";
    color: #1a73e8;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.zb2903products-summary {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(to right, rgba(26,115,232,0.05), rgba(13,71,161,0.05));
    border-radius: 10px;
    border: 1px solid rgba(26,115,232,0.1);
}

.zb2903products-summary p {
    color: #333;
    font-size: 1.1em;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

/* 下载区域样式 */
.zb2903download-section {
    padding: 60px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.zb2903download-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.zb2903download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.zb2903download-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
    display: flex;
    flex-direction: column;
    min-height: 300px;
}

.zb2903download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.zb2903download-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
}

.zb2903download-icon {
    font-size: 2.8em;
    color: #1a73e8;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zb2903download-title {
    flex-grow: 1;
}

.zb2903download-title h3 {
    font-size: 1.5em;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
}

.zb2903download-desc {
    color: #666;
    font-size: 1.1em;
    margin: 0;
    line-height: 1.4;
}

.zb2903version-info {
    list-style: none;
    margin: 20px 0;
    padding: 0;
    flex-grow: 1;
}

.zb2903version-info li {
    color: #666;
    margin: 10px 0;
    font-size: 1em;
    padding-left: 25px;
    position: relative;
}

.zb2903version-info li:before {
    content: "•";
    color: #1a73e8;
    position: absolute;
    left: 0;
    font-size: 1.2em;
}

.zb2903btn-download {
    display: inline-block;
    padding: 14px 35px;
    background-color: #1a73e8;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
    margin-top: auto;
    text-align: center;
    font-size: 1.1em;
}

.zb2903btn-download:hover {
    background-color: #0d47a1;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.zb2903download-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.zb2903feature-item {
    text-align: center;
    padding: 15px;
}

.zb2903feature-item .feature-icon {
    font-size: 2em;
    margin-bottom: 10px;
    color: #1a73e8;
}

.zb2903feature-item h4 {
    font-size: 1.1em;
    margin-bottom: 8px;
    color: #333;
}

.zb2903feature-item p {
    color: #666;
    font-size: 0.9em;
    margin: 0;
}

/* 使用指南样式 */
.zb2903guide {
    padding: 80px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.zb2903guide-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.zb2903guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.zb2903guide-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
}

.zb2903guide-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.zb2903guide-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.zb2903guide-icon {
    font-size: 2.8em;
    color: #1a73e8;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zb2903guide-title {
    flex-grow: 1;
}

.zb2903guide-title h3 {
    font-size: 1.5em;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
}

.zb2903guide-desc {
    color: #666;
    font-size: 1.1em;
    margin: 0;
    line-height: 1.4;
}

.zb2903guide-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.zb2903step-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.zb2903step-item:hover {
    background: #f0f4f8;
    transform: translateX(5px);
}

.zb2903step-number {
    width: 32px;
    height: 32px;
    background: #1a73e8;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.zb2903step-content {
    flex-grow: 1;
}

.zb2903step-content h4 {
    font-size: 1.1em;
    margin-bottom: 5px;
    color: #333;
    font-weight: 600;
}

.zb2903step-content p {
    color: #666;
    font-size: 0.95em;
    margin: 0;
    line-height: 1.4;
}

.zb2903guide-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.zb2903guide-features .feature-item {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.zb2903guide-features .feature-item:hover {
    transform: translateY(-5px);
    background: #f0f4f8;
}

.zb2903guide-features .feature-icon {
    font-size: 2.2em;
    margin-bottom: 15px;
    color: #1a73e8;
}

.zb2903guide-features h4 {
    font-size: 1.2em;
    margin-bottom: 10px;
    color: #333;
}

.zb2903guide-features p {
    color: #666;
    font-size: 0.95em;
    margin: 0;
}

/* FAQ样式 */
.zb2903faq {
    padding: 80px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
}

.zb2903faq-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.zb2903faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.zb2903faq-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
    position: relative;
    overflow: hidden;
}

.zb2903faq-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #1a73e8, #0d47a1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.zb2903faq-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.zb2903faq-card:hover:before {
    opacity: 1;
}

.zb2903faq-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.zb2903faq-icon {
    font-size: 2.8em;
    color: #1a73e8;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(26,115,232,0.1);
    border-radius: 12px;
    padding: 10px;
}

.zb2903faq-title {
    flex-grow: 1;
}

.zb2903faq-title h3 {
    font-size: 1.5em;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
}

.zb2903faq-desc {
    color: #666;
    font-size: 1.1em;
    margin: 0;
    line-height: 1.4;
}

.zb2903faq-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.zb2903faq-item {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
}

.zb2903faq-item:hover {
    background: #f0f4f8;
    transform: translateX(5px);
    border-color: #1a73e8;
}

.zb2903faq-item h4 {
    font-size: 1.1em;
    margin-bottom: 12px;
    color: #333;
    font-weight: 600;
    position: relative;
    padding-left: 20px;
}

.zb2903faq-item h4:before {
    content: "Q:";
    position: absolute;
    left: 0;
    color: #1a73e8;
    font-weight: bold;
}

.zb2903faq-item p {
    color: #666;
    font-size: 0.95em;
    margin: 0;
    line-height: 1.6;
    padding-left: 20px;
    position: relative;
}

.zb2903faq-item p:before {
    content: "A:";
    position: absolute;
    left: 0;
    color: #1a73e8;
    font-weight: bold;
}

.zb2903faq-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    border: 1px solid #e8e8e8;
}

.zb2903faq-features .feature-item {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid #e8e8e8;
}

.zb2903faq-features .feature-item:hover {
    transform: translateY(-5px);
    background: #f0f4f8;
    border-color: #1a73e8;
}

.zb2903faq-features .feature-icon {
    font-size: 2.2em;
    margin-bottom: 15px;
    color: #1a73e8;
    background: rgba(26,115,232,0.1);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin: 0 auto 15px;
}

.zb2903faq-features h4 {
    font-size: 1.2em;
    margin-bottom: 10px;
    color: #333;
}

.zb2903faq-features p {
    color: #666;
    font-size: 0.95em;
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .zb2903faq {
        padding: 60px 0;
    }

    .zb2903faq-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .zb2903faq-card {
        padding: 20px;
    }

    .zb2903faq-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }

    .zb2903faq-icon {
        font-size: 2.2em;
        width: 50px;
        height: 50px;
    }

    .zb2903faq-title h3 {
        font-size: 1.3em;
    }

    .zb2903faq-desc {
        font-size: 1em;
    }

    .zb2903faq-item {
        padding: 15px;
    }

    .zb2903faq-item h4 {
        font-size: 1em;
        margin-bottom: 10px;
    }

    .zb2903faq-item p {
        font-size: 0.9em;
    }

    .zb2903faq-features {
        grid-template-columns: 1fr;
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .zb2903faq {
        padding: 40px 0;
    }

    .zb2903faq-card {
        padding: 15px;
    }

    .zb2903faq-header {
        margin-bottom: 15px;
        padding-bottom: 10px;
    }

    .zb2903faq-icon {
        font-size: 2em;
        width: 45px;
        height: 45px;
    }

    .zb2903faq-title h3 {
        font-size: 1.2em;
    }

    .zb2903faq-desc {
        font-size: 0.9em;
    }

    .zb2903faq-item {
        padding: 12px;
    }

    .zb2903faq-item h4 {
        font-size: 0.95em;
        margin-bottom: 8px;
    }

    .zb2903faq-item p {
        font-size: 0.85em;
    }

    .zb2903faq-features {
        padding: 15px;
    }
}

/* 页脚样式 */
.zb2903footer {
    background-color: #333;
    color: white;
    padding: 60px 0 30px;
}

.zb2903footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.zb2903footer-section h3 {
    margin-bottom: 20px;
    font-size: 1.2em;
}

.zb2903social-links {
    display: flex;
    gap: 20px;
    margin-top: 15px;
}

.zb2903footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .zb2903header .container {
        flex-direction: column;
        height: auto;
        padding: 20px;
    }

    .main-nav ul {
        flex-direction: column;
        text-align: center;
        gap: 15px;
        margin-top: 20px;
    }

    .zb2903hero {
        padding: 120px 0 60px;
    }

    .zb2903hero-content h2 {
        font-size: 2em;
    }

    .zb2903hero-stats {
        flex-direction: column;
        gap: 30px;
    }

    .zb2903download-buttons {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .zb2903btn-secondary {
        margin-left: 0;
    }

    .zb2903footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .zb2903social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .zb2903container {
        padding: 0 15px;
    }

    .zb2903hero-content h2 {
        font-size: 1.8em;
    }

    .zb2903section-title {
        font-size: 1.8em;
    }

    .stat-number {
        font-size: 2em;
    }
}

/* 新主横幅样式 */
.zb2903redesigned-hero {
    background: linear-gradient(120deg, #1a73e8 0%, #0d47a1 100%);
    color: #fff;
    padding: 60px 0 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.zb2903redesign-hero-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 180px;
    gap: 40px;
}
.zb2903redesign-hero-main {
    max-width: 480px;
    margin: 0 auto;
}
.zb2903redesign-hero-title {
    font-size: 2.2em;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.zb2903redesign-hero-desc {
    font-size: 1.1em;
    opacity: 0.92;
    margin-bottom: 22px;
    line-height: 1.6;
}
.zb2903redesign-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.zb2903redesign-hero-actions .btn {
    min-width: 110px;
    font-size: 1em;
    padding: 10px 18px;
    border-radius: 6px;
}
.zb2903redesign-hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 600px;
}
.zb2903redesign-hero-image img {
    width: 100%;
    max-width: 560px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.13);
    background: #fff;
}
@media (max-width: 900px) {
    .zb2903redesign-hero-content {
        gap: 18px;
    }
    .zb2903redesign-hero-image {
        max-width: 100vw;
    }
    .zb2903redesign-hero-image img {
        max-width: 90vw;
    }
}
@media (max-width: 768px) {
    .zb2903redesign-hero-content {
        flex-direction: column;
        gap: 12px;
    }
    .zb2903redesign-hero-image {
        max-width: 90vw;
        margin-top: 10px;
    }
    .zb2903redesign-hero-image img {
        max-width: 98vw;
    }
}
@media (max-width: 480px) {
    .zb2903redesign-hero-image {
        max-width: 100vw;
        min-width: 220px;
    }
    .zb2903redesign-hero-image img {
        max-width: 98vw;
    }
}

@media (min-width: 1200px) {
    .zb2903container {
        max-width: 1400px;
    }
    .main-nav ul {
        gap: 60px;
        padding: 0 32px;
    }
}