/* 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;
}

.zb12a3container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.zb12a3header {
    background-color: #00B900;
    padding: 0.6rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.zb12a3header .zb12a3container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.zb12a3logo h1 {
    color: white;
    font-size: 1.3rem;
    font-weight: bold;
}

.zb12a3logo-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.8rem;
    margin-top: 0.2rem;
}

.zb12a3main-nav {
    display: flex;
    align-items: center;
}

.zb12a3main-nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.zb12a3main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: opacity 0.3s;
    white-space: nowrap;
}

.zb12a3main-nav a:hover {
    opacity: 0.8;
}

.zb12a3menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.zb12a3menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: white;
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 主要内容区域 */
main {
    margin-top: 65px;
}

/* 英雄区域 */
.zb12a3hero {
    background: linear-gradient(135deg, #00B900 0%, #00A000 100%);
    padding: 80px 0;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.zb12a3hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.zb12a3hero-text {
    flex: 1;
    max-width: 600px;
}

.zb12a3hero-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.zb12a3hero-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.zb12a3hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.zb12a3hero-image .line-logo {
    max-width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

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

/* 按钮样式 */
.zb12a3btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.zb12a3btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.zb12a3btn-primary {
    background-color: white;
    color: #00B900;
    margin-right: 1rem;
}

.zb12a3btn-secondary {
    background-color: transparent;
    border: 2px solid white;
    color: white;
}

/* 特性区域 */
.zb12a3features {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zb12a3features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zb12a3features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zb12a3feature-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    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;
}

.zb12a3feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.zb12a3feature-card.zb12a3primary {
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
}

.zb12a3feature-card.zb12a3primary .zb12a3feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.zb12a3feature-card.zb12a3primary h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.zb12a3feature-card.zb12a3primary p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.zb12a3feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-block;
    color: #00B900;
}

.zb12a3feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.zb12a3feature-card p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.zb12a3feature-details {
    list-style: none;
    margin-top: auto;
    padding: 0;
}

.zb12a3feature-details li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: #666;
}

.zb12a3feature-details li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00B900;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .zb12a3container {
        padding: 0 15px;
    }

    .zb12a3features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .zb12a3version-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .zb12a3guide-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .zb12a3guide-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .zb12a3header {
        padding: 0.5rem 0;
    }

    .zb12a3logo h1 {
        font-size: 1.2rem;
    }

    .zb12a3logo-desc {
        font-size: 0.7rem;
    }

    .zb12a3main-nav ul {
        gap: 1rem;
    }

    .zb12a3main-nav a {
        font-size: 0.85rem;
    }

    main {
        margin-top: 60px;
    }

    .zb12a3hero-content {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .zb12a3hero-text {
        max-width: 100%;
    }

    .zb12a3hero-text h2 {
        font-size: 2rem;
    }

    .zb12a3hero-text p {
        font-size: 1.1rem;
    }

    .zb12a3hero-image .line-logo {
        max-height: 200px;
    }

    .zb12a3features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .zb12a3download-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .zb12a3requirements-wrapper {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .zb12a3faq-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .zb12a3guide-features {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .zb12a3menu-toggle {
        display: flex;
    }

    .zb12a3main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: #00B900;
        padding: 80px 20px 20px;
        transition: right 0.3s ease;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    }

    .zb12a3main-nav.zb12a3active {
        right: 0;
    }

    .zb12a3main-nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .zb12a3main-nav a {
        display: block;
        padding: 10px 0;
        font-size: 1rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .zb12a3menu-toggle.zb12a3active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .zb12a3menu-toggle.zb12a3active span:nth-child(2) {
        opacity: 0;
    }

    .zb12a3menu-toggle.zb12a3active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}

@media (max-width: 480px) {
    .zb12a3header {
        padding: 0.4rem 0;
    }

    .zb12a3logo h1 {
        font-size: 1.1rem;
    }

    .zb12a3logo-desc {
        font-size: 0.65rem;
    }

    .zb12a3main-nav ul {
        gap: 0.8rem;
    }

    .zb12a3main-nav a {
        font-size: 0.8rem;
    }

    main {
        margin-top: 55px;
    }

    .zb12a3hero-text h2 {
        font-size: 1.8rem;
    }

    .zb12a3hero-text p {
        font-size: 1rem;
    }

    .zb12a3hero-image .line-logo {
        max-height: 150px;
    }

    .zb12a3features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .zb12a3feature-card {
        padding: 1.2rem;
    }

    .zb12a3feature-icon {
        font-size: 1.8rem;
    }

    .zb12a3feature-card h3 {
        font-size: 1.1rem;
    }

    .zb12a3download-header {
        padding: 1rem;
    }

    .zb12a3download-content {
        padding: 1rem;
    }

    .zb12a3download-icon {
        font-size: 2rem;
    }

    .zb12a3download-header h3 {
        font-size: 1.1rem;
    }

    .zb12a3requirements-header {
        padding: 1rem;
    }

    .zb12a3requirements-content {
        padding: 1rem;
    }

    .zb12a3requirements-header h3 {
        font-size: 1.1rem;
    }

    .zb12a3faq-header {
        padding: 1rem;
    }

    .zb12a3faq-content {
        padding: 1rem;
    }

    .zb12a3faq-header h3 {
        font-size: 1.1rem;
    }

    .zb12a3guide-header {
        padding: 1rem;
    }

    .zb12a3guide-content {
        padding: 1rem;
    }

    .zb12a3guide-header h3 {
        font-size: 1.1rem;
    }

    .zb12a3btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }

    .zb12a3section-desc {
        font-size: 0.9rem;
    }

    .zb12a3main-nav {
        width: 100%;
        max-width: none;
    }
}

/* 添加平滑滚动效果 */
html {
    scroll-behavior: smooth;
}

/* 优化导航栏在移动端的显示 */
@media (max-width: 768px) {
    .zb12a3main-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 5px;
    }

    .zb12a3main-nav ul {
        white-space: nowrap;
        padding-bottom: 5px;
    }

    .zb12a3main-nav::-webkit-scrollbar {
        height: 3px;
    }

    .zb12a3main-nav::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.3);
        border-radius: 3px;
    }
}

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

/* 优化按钮在移动端的触摸区域 */
@media (max-width: 480px) {
    .zb12a3btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* 版本信息区域 */
.zb12a3versions {
    padding: 4rem 0;
    background-color: #fff;
}

.zb12a3versions h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zb12a3version-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zb12a3version-card, .zb12a3update-card {
    background: #f9f9f9;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    height: 100%;
}

.zb12a3version-header, .zb12a3update-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #eee;
}

.zb12a3version-header h3, .zb12a3update-header h3 {
    font-size: 1.5rem;
    color: #333;
    margin: 0;
}

.zb12a3version-date, .zb12a3update-date {
    color: #666;
    font-size: 0.9rem;
}

.zb12a3version-content, .zb12a3update-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.zb12a3version-platform {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.zb12a3version-platform:hover {
    transform: translateX(5px);
}

.zb12a3platform-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0f0f0;
    border-radius: 10px;
}

.zb12a3platform-info h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1.1rem;
}

.zb12a3version-number {
    color: #00B900;
    font-weight: bold;
    margin: 0;
    font-size: 0.9rem;
}

.zb12a3version-size {
    color: #666;
    margin: 0;
    font-size: 0.9rem;
}

.zb12a3update-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.zb12a3update-item:hover {
    transform: translateX(5px);
}

.zb12a3update-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0f0f0;
    border-radius: 8px;
}

.zb12a3update-info h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1.1rem;
}

.zb12a3update-info p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 版本信息响应式设计 */
@media (max-width: 1200px) {
    .zb12a3version-wrapper {
        padding: 0 1rem;
    }
}

@media (max-width: 1024px) {
    .zb12a3version-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .zb12a3version-card, .zb12a3update-card {
        max-width: 800px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .zb12a3versions {
        padding: 3rem 0;
    }

    .zb12a3versions h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .zb12a3version-card, .zb12a3update-card {
        padding: 1.5rem;
    }

    .zb12a3version-header, .zb12a3update-header {
        margin-bottom: 1.5rem;
        padding-bottom: 0.8rem;
    }

    .zb12a3version-header h3, .zb12a3update-header h3 {
        font-size: 1.3rem;
    }

    .zb12a3version-platform, .zb12a3update-item {
        padding: 0.8rem;
    }

    .zb12a3platform-icon {
        font-size: 1.8rem;
        width: 45px;
        height: 45px;
    }

    .zb12a3update-icon {
        font-size: 1.3rem;
        width: 35px;
        height: 35px;
    }

    .zb12a3platform-info h4, .zb12a3update-info h4 {
        font-size: 1rem;
    }

    .zb12a3version-number, .zb12a3version-size, .zb12a3update-info p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .zb12a3versions {
        padding: 2rem 0;
    }

    .zb12a3versions h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .zb12a3version-wrapper {
        gap: 1.5rem;
    }

    .zb12a3version-card, .zb12a3update-card {
        padding: 1.2rem;
    }

    .zb12a3version-header h3, .zb12a3update-header h3 {
        font-size: 1.2rem;
    }

    .zb12a3version-date, .zb12a3update-date {
        font-size: 0.8rem;
    }

    .zb12a3version-platform, .zb12a3update-item {
        padding: 0.8rem;
        gap: 0.8rem;
    }

    .zb12a3platform-icon {
        font-size: 1.5rem;
        width: 40px;
        height: 40px;
    }

    .zb12a3update-icon {
        font-size: 1.2rem;
        width: 32px;
        height: 32px;
    }

    .zb12a3platform-info h4, .zb12a3update-info h4 {
        font-size: 0.95rem;
    }

    .zb12a3version-number, .zb12a3version-size, .zb12a3update-info p {
        font-size: 0.8rem;
    }
}

/* 下载中心区域 */
.zb12a3download-section {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zb12a3download-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zb12a3download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zb12a3download-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;
}

.zb12a3download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.zb12a3download-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
}

.zb12a3download-header h3 {
    margin: 0;
    font-size: 1.3rem;
    color: white;
}

.zb12a3download-badge {
    background: white;
    color: #00B900;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.zb12a3download-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.zb12a3download-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.zb12a3download-info {
    text-align: center;
}

.zb12a3download-info p {
    margin: 0.5rem 0;
    color: #666;
}

.zb12a3version-info {
    color: #00B900;
    font-weight: 500;
}

.zb12a3download-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.zb12a3download-features li {
    position: relative;
    padding-left: 1.5rem;
    color: #666;
    font-size: 0.9rem;
}

.zb12a3download-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00B900;
}

.zb12a3btn-download {
    display: block;
    width: 100%;
    padding: 1rem;
    background: #00B900;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.zb12a3btn-download:hover {
    background: #00A000;
}

/* 系统要求区域 */
.zb12a3requirements {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zb12a3requirements h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zb12a3requirements-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zb12a3requirements-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;
}

.zb12a3requirements-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.zb12a3requirements-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.zb12a3requirements-header .zb12a3platform-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.zb12a3requirements-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: white;
}

.zb12a3requirements-content {
    padding: 1.5rem;
}

.zb12a3requirement-group {
    margin-bottom: 2rem;
}

.zb12a3requirement-group:last-child {
    margin-bottom: 0;
}

.zb12a3requirement-group h4 {
    color: #333;
    font-size: 1.1rem;
    margin: 0 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

.zb12a3requirement-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zb12a3requirement-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.zb12a3requirement-list li:last-child {
    border-bottom: none;
}

.zb12a3requirement-label {
    color: #666;
    font-size: 0.95rem;
}

.zb12a3requirement-value {
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
}

/* 常见问题区域 */
.zb12a3faq {
    padding: 4rem 0;
    background-color: #fff;
}

.zb12a3faq h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zb12a3faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zb12a3faq-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;
}

.zb12a3faq-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.zb12a3faq-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.zb12a3faq-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.zb12a3faq-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: white;
}

.zb12a3faq-content {
    padding: 1.5rem;
}

.zb12a3faq-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.zb12a3faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.zb12a3faq-question {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.zb12a3question-icon {
    width: 24px;
    height: 24px;
    background: #00B900;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.zb12a3faq-question h4 {
    margin: 0;
    color: #333;
    font-size: 1.1rem;
    line-height: 1.4;
}

.zb12a3faq-answer {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding-left: 2.5rem;
}

.zb12a3answer-icon {
    width: 24px;
    height: 24px;
    background: #f0f0f0;
    color: #666;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.zb12a3faq-answer p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 使用指南区域 */
.zb12a3guide {
    padding: 4rem 0;
    background-color: #f9f9f9;
}

.zb12a3guide h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #333;
}

.zb12a3guide-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.zb12a3guide-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;
}

.zb12a3guide-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.zb12a3guide-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, #00B900, #00A000);
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.zb12a3guide-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.zb12a3guide-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: white;
}

.zb12a3guide-content {
    padding: 1.5rem;
}

.zb12a3guide-step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.zb12a3guide-step:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.zb12a3step-number {
    width: 32px;
    height: 32px;
    background: #00B900;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.zb12a3step-info h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1.1rem;
}

.zb12a3step-info p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.zb12a3guide-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.zb12a3feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.zb12a3feature-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.zb12a3feature-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0f0f0;
    border-radius: 8px;
    flex-shrink: 0;
}

.zb12a3feature-info h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1.1rem;
}

.zb12a3feature-info p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 使用指南响应式设计 */
@media (max-width: 1024px) {
    .zb12a3guide-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .zb12a3guide-main .zb12a3guide-card {
        max-width: 800px;
        margin: 0 auto;
    }

    .zb12a3guide-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .zb12a3guide {
        padding: 3rem 0;
    }

    .zb12a3guide h2 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .zb12a3guide-features {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .zb12a3guide-header {
        padding: 1.2rem;
    }

    .zb12a3guide-icon {
        font-size: 1.8rem;
        width: 45px;
        height: 45px;
    }

    .zb12a3guide-header h3 {
        font-size: 1.3rem;
    }

    .zb12a3guide-content {
        padding: 1.2rem;
    }

    .zb12a3guide-step, .zb12a3feature-item {
        gap: 0.8rem;
    }

    .zb12a3step-number {
        width: 28px;
        height: 28px;
        font-size: 1rem;
    }

    .zb12a3step-info h4, .zb12a3feature-info h4 {
        font-size: 1rem;
    }

    .zb12a3step-info p, .zb12a3feature-info p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .zb12a3guide {
        padding: 2rem 0;
    }

    .zb12a3guide h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .zb12a3guide-header {
        padding: 1rem;
    }

    .zb12a3guide-icon {
        font-size: 1.5rem;
        width: 40px;
        height: 40px;
    }

    .zb12a3guide-header h3 {
        font-size: 1.2rem;
    }

    .zb12a3guide-content {
        padding: 1rem;
    }

    .zb12a3guide-step, .zb12a3feature-item {
        margin-bottom: 1.2rem;
        padding-bottom: 1.2rem;
    }

    .zb12a3step-number {
        width: 24px;
        height: 24px;
        font-size: 0.9rem;
    }

    .zb12a3feature-icon {
        font-size: 1.3rem;
        width: 35px;
        height: 35px;
    }

    .zb12a3step-info h4, .zb12a3feature-info h4 {
        font-size: 0.95rem;
    }

    .zb12a3step-info p, .zb12a3feature-info p {
        font-size: 0.85rem;
    }
}

/* 页脚样式 */
.zb12a3footer {
    background-color: #f5f5f5;
    padding: 3rem 0;
    margin-top: 4rem;
}

.zb12a3footer .zb12a3container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.zb12a3footer-links {
    text-align: center;
}

.zb12a3footer-links h3 {
    color: #333;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.zb12a3footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.zb12a3footer-links a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}

.zb12a3footer-links a:hover {
    color: #00B900;
}

.zb12a3footer-info {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    line-height: 1.6;
}

.zb12a3footer-info a {
    color: #00B900;
    text-decoration: none;
}

.zb12a3footer-info a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .zb12a3footer {
        padding: 2rem 0;
    }

    .zb12a3footer-links ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    .zb12a3footer-info {
        font-size: 0.85rem;
    }
}