/* 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;
}

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

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

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

.logo h1 {
    font-size: 2rem;
    color: #2c3e50;
}

.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s;
}

.main-nav a:hover {
    color: #3498db;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 160px 0 100px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-text {
    text-align: left;
}

.hero-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

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

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

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-text {
    font-size: 1.1rem;
    opacity: 0.9;
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.hero-img:hover {
    transform: translateY(-5px);
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background-color: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

/* 功能特点区域 */
.features {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.features-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.features-main {
    margin-bottom: 20px;
}

.market-display-frame {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 40px;
    overflow: hidden;
}

.market-display-header {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 30px;
    text-align: center;
}

.market-display-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.market-display-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.market-display-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
    padding: 30px;
}

.market-display-image {
    background: #f8f9fa;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    overflow: hidden;
    position: relative;
}

.market-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

.market-image:hover {
    transform: scale(1.02);
}

.market-display-features {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.market-display-features .feature-list {
    margin-top: 0;
}

.market-display-features .feature-list li {
    background: #f8f9fa;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.market-display-features .feature-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.market-display-features .feature-item-title {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 8px;
}

.market-display-features .feature-item-desc {
    font-size: 0.95rem;
    color: #666;
}

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

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    text-align: center;
}

.feature-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    text-align: center;
}

.feature-card p {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
}

.feature-list {
    list-style: none;
    margin-top: 20px;
}

.feature-list li {
    margin: 15px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: background-color 0.3s;
}

.feature-list li:hover {
    background: #e9ecef;
}

.feature-item-title {
    display: block;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.feature-item-desc {
    display: block;
    font-size: 0.9rem;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .market-display-content {
        grid-template-columns: 1fr;
    }

    .market-display-image {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .market-display-header {
        padding: 20px;
    }

    .market-display-header h3 {
        font-size: 1.5rem;
    }

    .market-display-content {
        padding: 20px;
    }

    .market-display-image {
        min-height: 250px;
    }
}

@media (max-width: 480px) {
    .market-display-header h3 {
        font-size: 1.3rem;
    }

    .market-display-image {
        min-height: 200px;
    }

    .market-display-features .feature-list li {
        padding: 15px;
    }
}

/* 产品优势区域 */
.advantages {
    padding: 100px 0;
    background-color: white;
}

.advantages-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.advantages-main {
    margin-bottom: 20px;
}

.speed-display-frame {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 40px;
    overflow: hidden;
}

.speed-display-header {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 30px;
    text-align: center;
}

.speed-display-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.speed-display-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.speed-display-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
    padding: 30px;
}

.speed-display-image {
    background: #f8f9fa;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    overflow: hidden;
    position: relative;
}

.speed-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

.speed-image:hover {
    transform: scale(1.02);
}

.speed-display-features {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.speed-display-features .advantage-list {
    margin-top: 0;
}

.speed-display-features .advantage-list li {
    background: #f8f9fa;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.speed-display-features .advantage-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.speed-display-features .advantage-item-title {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 8px;
}

.speed-display-features .advantage-item-desc {
    font-size: 0.95rem;
    color: #666;
}

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

.advantage-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    text-align: center;
}

.advantage-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    text-align: center;
}

.advantage-card p {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
}

.advantage-list {
    list-style: none;
    margin-top: 20px;
}

.advantage-list li {
    margin: 15px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.advantage-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.advantage-item-title {
    display: block;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.advantage-item-desc {
    display: block;
    font-size: 0.9rem;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .speed-display-content {
        grid-template-columns: 1fr;
    }

    .speed-display-image {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .speed-display-header {
        padding: 20px;
    }

    .speed-display-header h3 {
        font-size: 1.5rem;
    }

    .speed-display-content {
        padding: 20px;
    }

    .speed-display-image {
        min-height: 250px;
    }
}

@media (max-width: 480px) {
    .speed-display-header h3 {
        font-size: 1.3rem;
    }

    .speed-display-image {
        min-height: 200px;
    }

    .speed-display-features .advantage-list li {
        padding: 15px;
    }
}

/* 使用场景区域 */
.scenarios {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.scenarios-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.scenarios-main {
    margin-bottom: 20px;
}

.scenario-display-frame {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 40px;
    overflow: hidden;
}

.scenario-display-header {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 30px;
    text-align: center;
}

.scenario-display-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.scenario-display-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.scenario-display-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
    padding: 30px;
}

.scenario-display-image {
    background: #f8f9fa;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    overflow: hidden;
    position: relative;
}

.scenario-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

.scenario-image:hover {
    transform: scale(1.02);
}

.scenario-display-features {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.scenario-list li {
    background: #f8f9fa;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.scenario-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.scenario-item-title {
    display: block;
    font-size: 1.1rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 8px;
}

.scenario-item-desc {
    display: block;
    font-size: 0.95rem;
    color: #666;
}

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

.scenario-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.scenario-card:hover {
    transform: translateY(-5px);
}

.scenario-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-align: center;
}

.scenario-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    text-align: center;
}

.scenario-card p {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
}

.scenario-feature-list {
    list-style: none;
    margin-top: 20px;
}

.scenario-feature-list li {
    margin: 15px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.scenario-feature-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.scenario-feature-title {
    display: block;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.scenario-feature-desc {
    display: block;
    font-size: 0.9rem;
    color: #666;
}

/* 下载区域样式 */
.download {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.download-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.download-display-frame {
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 40px;
    overflow: hidden;
}

.download-display-header {
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    padding: 30px;
    text-align: center;
}

.download-display-header h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.download-display-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.download-display-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
    padding: 30px;
}

.download-display-image {
    background: #f8f9fa;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    overflow: hidden;
    position: relative;
}

.download-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

.download-image:hover {
    transform: scale(1.02);
}

.download-display-features {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.download-list li {
    background: #f8f9fa;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.download-list li:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.download-item-title {
    display: block;
    font-size: 1.1rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 8px;
}

.download-item-desc {
    display: block;
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 15px;
}

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

.download-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.download-card:hover {
    transform: translateY(-5px);
}

.download-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.download-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.download-card p {
    color: #666;
    margin-bottom: 20px;
}

.version-info {
    list-style: none;
    margin: 20px 0;
    text-align: left;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
}

.version-info li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
}

.version-info li:last-child {
    border-bottom: none;
}

.version-label {
    color: #666;
    font-size: 0.9rem;
}

.version-value {
    color: #2c3e50;
    font-weight: 500;
}

.download-button {
    display: inline-block;
    padding: 12px 30px;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.download-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

/* 响应式设计优化 */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }

    .hero-content {
        gap: 60px;
    }

    .hero-text h2 {
        font-size: 3rem;
    }

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

@media (max-width: 1199px) {
    .container {
        max-width: 960px;
    }

    .hero-content {
        gap: 40px;
    }

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

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

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .hero-text {
        text-align: center;
    }

    .hero-stats {
        justify-content: center;
    }

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

    .hero-image {
        margin-top: 30px;
    }

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

    .market-display-content,
    .speed-display-content,
    .scenario-display-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .container {
        max-width: 540px;
    }

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

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

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

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

    .cta-button {
        padding: 12px 30px;
    }

    .features-grid,
    .advantages-grid,
    .scenarios-grid,
    .download-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 40px;
    }

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

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

    .stat-number {
        font-size: 1.8rem;
    }

    .hero-img {
        max-width: 100%;
    }

    .cta-button {
        padding: 10px 25px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature-card,
    .advantage-card,
    .scenario-card,
    .download-card {
        padding: 20px;
    }

    .market-display-header,
    .speed-display-header,
    .scenario-display-header,
    .download-display-header {
        padding: 20px;
    }

    .market-display-header h3,
    .speed-display-header h3,
    .scenario-display-header h3,
    .download-display-header h3 {
        font-size: 1.3rem;
    }

    .market-display-content,
    .speed-display-content,
    .scenario-display-content,
    .download-display-content {
        padding: 15px;
    }
}

/* 导航栏响应式优化 */
@media (max-width: 991px) {
    .header .container {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
    }

    .main-nav {
        width: 100%;
        margin-top: 15px;
    }

    .main-nav ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .main-nav li {
        margin: 0;
    }

    .main-nav a {
        display: block;
        padding: 8px 15px;
        font-size: 0.95rem;
    }
}

@media (max-width: 767px) {
    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 5px;
    }

    .main-nav li {
        width: 100%;
        text-align: center;
    }

    .main-nav a {
        padding: 10px 20px;
        font-size: 1rem;
        border-radius: 5px;
        background-color: #f8f9fa;
        transition: all 0.3s ease;
    }

    .main-nav a:hover {
        background-color: #e9ecef;
        color: #3498db;
    }
}

@media (max-width: 575px) {
    .logo h1 {
        font-size: 1.8rem;
    }

    .main-nav {
        margin-top: 10px;
    }

    .main-nav ul {
        gap: 8px;
    }

    .main-nav a {
        padding: 8px 15px;
        font-size: 0.95rem;
    }
}

/* 添加汉堡菜单按钮样式 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #2c3e50;
    border-radius: 3px;
    transition: all 0.3s ease;
}

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

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

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

@media (max-width: 767px) {
    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #fff;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .main-nav li {
        width: 100%;
        text-align: center;
    }

    .main-nav a {
        display: block;
        padding: 12px 20px;
        font-size: 1rem;
        border-radius: 5px;
        background-color: #f8f9fa;
        transition: all 0.3s ease;
    }

    .main-nav a:hover {
        background-color: #e9ecef;
        color: #3498db;
    }
}

/* 优化导航栏基础样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    transition: all 0.3s ease;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.main-nav a:hover {
    color: #3498db;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #3498db;
    transition: width 0.3s ease;
}

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

/* 图片响应式优化 */
@media (max-width: 991px) {
    .market-display-image,
    .speed-display-image,
    .scenario-display-image,
    .download-display-image {
        min-height: 300px;
    }
}

@media (max-width: 767px) {
    .market-display-image,
    .speed-display-image,
    .scenario-display-image,
    .download-display-image {
        min-height: 250px;
    }
}

@media (max-width: 575px) {
    .market-display-image,
    .speed-display-image,
    .scenario-display-image,
    .download-display-image {
        min-height: 200px;
    }
}

/* 页脚样式优化 */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    color: #fff;
}

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

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

.footer-links a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #3498db;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    margin: 10px 0;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

.footer-bottom a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: #3498db;
}

.footer-bottom strong {
    font-weight: 600;
}

/* 页脚响应式优化 */
@media (max-width: 767px) {
    .footer {
        padding: 40px 0 20px;
    }

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

    .footer-section {
        text-align: center;
    }

    .footer-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .footer-links li {
        margin: 0;
    }
}

@media (max-width: 575px) {
    .footer {
        padding: 30px 0 15px;
    }

    .footer-section h4 {
        font-size: 1.1rem;
    }

    .footer-bottom p {
        font-size: 0.8rem;
    }
}