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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft JhengHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* H1标题样式 */
h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    text-align: center;
    margin-bottom: 1rem;
    line-height: 1.2;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    background-color: #e91e63;
    color: #fff;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary:hover {
    background-color: #d81b60;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(233, 30, 99, 0.3);
}

.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: #e91e63;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid #e91e63;
    cursor: pointer;
    font-size: 16px;
}

.btn-secondary:hover {
    background-color: #e91e63;
    color: #fff;
}

/* 主横幅视频区域样式 */
.hero-video {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-overflow-scrolling: touch;
}

#heroVideo {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    transform-origin: center center;
    object-fit: cover;
    display: block;
    margin: 0;
    padding: 0;
    background-color: #000;
}

#heroVideo::-webkit-media-controls,
#heroVideo::-webkit-media-controls-panel,
#heroVideo::-webkit-media-controls-play-button,
#heroVideo::-webkit-media-controls-timeline,
#heroVideo::-webkit-media-controls-current-time-display,
#heroVideo::-webkit-media-controls-time-remaining-display,
#heroVideo::-webkit-media-controls-mute-button,
#heroVideo::-webkit-media-controls-toggle-closed-captions-button,
#heroVideo::-webkit-media-controls-fullscreen-button,
#heroVideo::-webkit-media-controls-volume-slider {
    display: none !important;
    -webkit-appearance: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 2rem;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

/* 章节标题样式 */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: #e91e63;
}

.section-title p {
    font-size: 16px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.section-divider {
    width: 200px;
    height: 2px;
    background-color: #333;
    margin: 20px auto 30px;
}

/* 导航栏样式 */
header {
    background-color: transparent;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 60px;
    width: 180px;
    object-fit: contain;
    display: block;
    max-width: 100%;
}

/* 第一个 logo 为主 logo */
.logo img:first-child {
    flex-shrink: 0;
    height: 60px;
    width: 180px;
}

/* 第二个 logo 为副 logo，调小显示 */
.logo img:last-child {
    display: block;
    height: 45px;
    width: 135px;
}

@media (max-width: 768px) {
    .logo img:first-child {
        max-height: 40px;
        width: auto;
    }
    
    .logo img:last-child {
        max-height: 30px;
        width: auto;
    }
}

@media (max-width: 576px) {
    .logo img:first-child {
        max-height: 35px;
        width: auto;
    }
    
    .logo img:last-child {
        max-height: 26px;
        width: auto;
    }
}

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

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #e91e63;
    transition: width 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    color: #e91e63;
}

nav ul li a:hover:after,
nav ul li a.active:after {
    width: 100%;
}

.book-btn a {
    background-color: #e91e63;
    color: #fff;
    padding: 8px 20px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.book-btn a:hover {
    background-color: #d81b60;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

.mobile-menu-toggle span {
    width: 30px;
    height: 3px;
    background: #333;
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

.mobile-menu-toggle.active span {
    background: #e91e63;
}

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

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

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


/* 产品推荐样式 */
.products {
    padding: 100px 0;
    background: linear-gradient(135deg, #fff 0%, #fafafa 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    overflow: visible;
    position: relative;
}

.products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 30%, rgba(233, 30, 99, 0.02) 0%, transparent 50%),
                      radial-gradient(circle at 80% 70%, rgba(140, 110, 90, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.products-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    position: relative;
    z-index: 1;
    justify-content: center;
}

.product-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    padding: 0;
    width: auto;
    max-width: calc(25% - 6px);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.product-img {
    height: auto;
    overflow: hidden;
    position: relative;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover .product-img img {
    transform: scale(1.08);
}

.product-card h3 {
    font-size: 16px;
    margin: 25px 0 12px;
    padding: 0 25px;
    color: #333;
    font-weight: 600;
}

.product-card p {
    color: #666;
    font-size: 14px;
    line-height: 1.7;
    padding: 0 25px;
}



.about {
    padding: 60px 0;
    min-height: 100vh;
    background: linear-gradient(135deg, #faf8f5 0%, #f5f0eb 100%);
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
}

.section-title p {
    font-size: 16px;
    color: #666;
    font-style: italic;
    max-width: 600px;
    margin: 15px auto 0;
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
    padding: 50px 60px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-radius: 25px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.9);
}

.about-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.about-text {
    padding: 0 10px;
}

.about-text h3 {
    font-size: 38px;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.3;
    letter-spacing: 1px;
}

.about-text h4 {
    font-size: 22px;
    font-weight: 600;
    color: #8c6e5a;
    margin-bottom: 35px;
    letter-spacing: 1px;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
    text-align: justify;
    font-weight: 400;
}

.highlight {
    color: #e91e63;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.1) 0%, rgba(233, 30, 99, 0.05) 100%);
    padding: 2px 8px;
    border-radius: 4px;
}

.about-img {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    max-height: 350px;
}

.about-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.about-content:hover .about-img img {
    transform: scale(1.05);
}

/* 响应式布局 */
@media (max-width: 992px) {
    .about {
        padding: 50px 0;
    }
    
    .about-content {
        gap: 40px;
        padding: 40px 50px;
    }
    
    .about-text h3 {
        font-size: 32px;
    }
    
    .about-text h4 {
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .about {
        padding: 40px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        padding: 30px 25px;
        gap: 30px;
    }
    
    .about-text {
        padding: 0 10px;
        text-align: center;
        margin-bottom: 20px;
    }
    
    .about-img {
        max-height: 300px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .section-title p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .about {
        padding: 30px 0;
    }
    
    .about-content {
        padding: 25px 20px;
    }
    
    .section-title {
        margin-bottom: 30px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .about-text h3 {
        font-size: 28px;
    }
    
    .about-text h4 {
        font-size: 18px;
    }
    
    .about-text p {
        font-size: 15px;
    }
    
    .about-img {
        max-height: 250px;
    }
}



/* 联系我们样式 */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, #faf8f5 0%, #f5f0eb 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    overflow: hidden;
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 10% 20%, rgba(233, 30, 99, 0.03) 0%, transparent 50%),
                      radial-gradient(circle at 90% 80%, rgba(140, 110, 90, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.contact-content {
    display: flex;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
    position: relative;
    z-index: 1;
    align-items: stretch;
}

.contact-left {
    flex: 2;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-right {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.contact-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 30px;
    height: 100%;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.contact-right .contact-card {
    height: 100%;
    justify-content: flex-start;
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #fce4ec 0%, #f8bbd0 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    box-shadow: 0 6px 20px rgba(233, 30, 99, 0.25);
}

.card-icon i {
    font-size: 36px;
    color: #e91e63;
}

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

.card-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.card-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.phone-card .card-icon {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}

.phone-card .card-icon i {
    color: #1976d2;
}

.phone-card .card-content p a {
    color: #1976d2;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.contact-name {
    color: #333;
    font-weight: 600;
    margin-right: 5px;
}

.phone-card .card-content p a:hover {
    color: #1565c0;
}

.address-card .card-icon {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
}

.address-card .card-icon i {
    color: #f57c00;
}

.wechat-card .card-icon {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
}

.wechat-card .card-icon i {
    color: #4caf50;
}

.qrcode-wrapper {
    margin-top: 15px;
    padding: 15px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.qrcode-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.qrcode {
    width: 140px;
    height: 140px;
    display: block;
    border-radius: 8px;
}

@media (max-width: 768px) {
    .qrcode {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 576px) {
    .qrcode {
        width: 100px;
        height: 100px;
    }
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    padding: 70px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo h2 {
    font-size: 24px;
    font-weight: 700;
    color: #e91e63;
    margin-bottom: 15px;
}

.footer-logo p {
    font-size: 16px;
    color: #ccc;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-column ul {
    list-style: none;
}

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

.footer-column ul li a {
    text-decoration: none;
    color: #ccc;
    font-size: 15px;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #e91e63;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background-color: #444;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.social-icon:hover {
    background-color: #e91e63;
}

.social-icon i {
    color: #fff;
    font-size: 18px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
}

.footer-bottom p {
    font-size: 15px;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        flex-wrap: wrap;
        gap: 12px;
        padding: 0 40px;
    }
    
    .product-card {
        max-width: calc(50% - 6px);
    }
}

@media (max-width: 768px) {
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        padding: 0;
    }
    
    header .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 12px 15px;
        flex-wrap: nowrap;
        position: relative;
    }
    
    .logo {
        flex: 0 0 auto;
        max-width: 60%;
        gap: 8px;
    }
    
    .logo img {
        max-height: 40px;
        width: auto;
        height: auto;
    }
    
    .mobile-menu-toggle {
        display: flex;
        flex-shrink: 0;
        order: 1;
        z-index: 1001;
    }
    
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        padding: 0;
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, opacity 0.3s ease;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 999;
        transform-origin: top;
        pointer-events: none;
    }
    
    nav.active {
        max-height: 500px;
        opacity: 1;
        overflow-y: auto;
        visibility: visible;
        pointer-events: auto;
    }
    
    nav:not(.active) {
        visibility: hidden;
        pointer-events: none;
    }
    
    nav ul {
        flex-direction: column;
        width: 100%;
        padding: 10px 0;
        margin: 0;
        list-style: none;
        display: flex;
    }
    
    nav ul li {
        margin: 0;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #f0f0f0;
    }
    
    nav ul li:last-child {
        border-bottom: none;
    }
    
    nav ul li a {
        display: block;
        padding: 15px 20px;
        font-size: 16px;
        color: #333;
        text-decoration: none;
        -webkit-tap-highlight-color: transparent;
    }
    
    nav ul li a:after {
        display: none;
    }
    
    nav ul li a:hover,
    nav ul li a.active {
        color: #e91e63;
        background-color: rgba(233, 30, 99, 0.05);
    }
    
    .hero-video {
        margin-top: 0;
        height: 60vh;
        min-height: 400px;
    }
    
    .hero-content {
        padding: 0 15px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .logo img {
        max-height: 50px;
    }
    
    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
    
    nav ul li a {
        font-size: 14px;
        padding: 8px 12px;
    }
    
    .book-btn a {
        padding: 6px 16px;
        font-size: 13px;
    }
    
    .book-btn {
        margin-top: 15px;
    }
    
    .hero {
        height: 70vh;
        margin-top: 80px;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .section-title p {
        font-size: 16px;
    }
    
    .products,
    .about,
    .contact {
        padding: 50px 0;
    }
    
    .products-grid {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        padding: 0 30px;
    }
    
    .product-card {
        width: 100%;
        max-width: 100%;
        padding: 20px;
    }
    
    .product-img {
        height: auto;
        min-height: 200px;
    }
    
    .product-card h3 {
        font-size: 18px;
        margin: 15px 0 10px;
    }
    
    .product-card p {
        font-size: 14px;
    }
    
    .about-content {
        gap: 30px;
    }
    
    .about-text h3 {
        font-size: 22px;
    }
    
    .about-text p {
        font-size: 15px;
    }
    
    .contact-content {
        padding: 0 20px;
        flex-direction: column;
        gap: 30px;
    }
    
    .contact-left {
        gap: 20px;
    }
    
    .contact-card {
        width: 100%;
        padding: 30px 20px;
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }
    
    .card-icon i {
        font-size: 28px;
    }
    
    .card-content h3 {
        font-size: 20px;
    }
    
    .card-content p {
        font-size: 15px;
    }
    
    .qrcode {
        width: 120px;
        height: 120px;
    }
    
    .qrcode-item {
        gap: 10px;
    }
    
    .qrcode-name {
        font-size: 16px;
    }
    
    .contact-name {
        font-size: 14px;
    }
    
    .about-stats {
        justify-content: center;
        gap: 20px;
    }
    
    .about-stat-item {
        padding: 20px;
    }
    
    .about-stat-item h4 {
        font-size: 28px;
    }
    
    .about-stat-item p {
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    header .container {
        padding: 10px 12px;
        flex-wrap: nowrap;
    }
    
    .logo {
        max-width: 65%;
        gap: 6px;
    }
    
    .logo img {
        max-height: 32px;
        width: auto;
        height: auto;
    }
    
    .mobile-menu-toggle {
        width: 28px;
        height: 24px;
        flex-shrink: 0;
    }
    
    .mobile-menu-toggle span {
        width: 28px;
        height: 2.5px;
    }
    
    nav ul li a {
        padding: 12px 15px;
        font-size: 15px;
    }
    
    .hero-video {
        height: 40vh;
        min-height: 280px;
    }
    
    .hero-content {
        padding: 0 10px;
    }
    
    .hero-content h1 {
        font-size: 24px;
    }
    
    .hero-content p {
        font-size: 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo img {
        max-height: 40px;
    }
    
    nav ul {
        gap: 5px;
    }
    
    nav ul li {
        margin: 3px 5px;
    }
    
    nav ul li a {
        font-size: 13px;
        padding: 6px 10px;
    }
    
    .book-btn a {
        padding: 5px 14px;
        font-size: 12px;
    }
    
    .section-title h2 {
        font-size: 22px;
    }
    
    .section-title p {
        font-size: 14px;
    }
    
    .products-grid {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        padding: 0 20px;
    }
    
    .product-card {
        width: 100%;
        max-width: 100%;
        padding: 15px;
    }
    
    .product-img {
        height: auto;
        min-height: 180px;
    }
    
    .product-card h3 {
        font-size: 16px;
    }
    
    .product-card p {
        font-size: 13px;
    }
    
    .about-content {
        gap: 20px;
    }
    
    .about-text h3 {
        font-size: 18px;
    }
    
    .about-text p {
        font-size: 14px;
    }
    
    .about-image img {
        border-radius: 15px;
    }
    
    .about-stats {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .about-stat-item {
        width: 100%;
        padding: 15px;
    }
    
    .about-stat-item h4 {
        font-size: 24px;
    }
    
    .about-stat-item p {
        font-size: 13px;
    }
    
    .contact-content {
        padding: 0 15px;
        gap: 20px;
    }
    
    .contact-card {
        padding: 25px 15px;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
    }
    
    .card-icon i {
        font-size: 24px;
    }
    
    .card-content h3 {
        font-size: 18px;
    }
    
    .card-content p {
        font-size: 14px;
    }
    
    .qrcode {
        width: 100px;
        height: 100px;
    }
    
    .qrcode-item {
        gap: 8px;
    }
    
    .qrcode-name {
        font-size: 14px;
    }
    
    .contact-name {
        font-size: 13px;
    }
    
    .footer-content {
        padding: 30px 15px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-bottom p {
        font-size: 13px;
    }
    
    .back-to-top {
        right: 15px;
        bottom: 15px;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top i {
        font-size: 18px;
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 50px;
    height: 50px;
    background-color: #e91e63;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(233, 30, 99, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: #d81b60;
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(233, 30, 99, 0.5);
}

.back-to-top i {
    font-size: 20px;
}

/* 导航链接激活状态 */
nav[role="navigation"] a.active {
    color: #e91e63;
    font-weight: 600;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

@media (max-width: 768px) {
    .back-to-top {
        width: 45px;
        height: 45px;
        right: 20px;
        bottom: 20px;
    }
}