:root {
    --primary-color: #0066CC;
    --white: #FFFFFF;
    --light-gray: #F5F5F5;
    --dark-gray: #333333;
    --accent-orange: #FF6600;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "思源黑体", "Roboto", sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.2);
    padding: 1rem 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar .logo {
    height: 40px;
}

.navbar .logo img {
    height: 100%;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.navbar.scrolled .nav-menu a {
    color: var(--dark-gray);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

/* 移动端菜单按钮 */
.nav-toggle {
    display: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--white);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled .nav-toggle span {
    background-color: var(--dark-gray);
}

/* 轮播图样式 */
.hero-slider {
    height: 100vh;
    position: relative;
    overflow: hidden;
    margin-top: 0;
}

.slider-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
    pointer-events: none;
}

.slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
}

.slide-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 15%;
    transform: translateY(-50%);
    z-index: 2;
    padding: 0 2rem;
    margin: 0;
    width: auto;
}

.text-content {
    max-width: 600px;
    padding: 2rem;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    text-align: left;
}

.text-content h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.text-content h2 {
    font-size: 2rem;
    font-weight: normal;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.learn-more {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.learn-more:hover {
    background: #0052a3;
    transform: translateY(-2px);
}

/* 轮播图进度条样式 */
.slider-progress {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 2rem;
    z-index: 3;
}

.progress-item {
    position: relative;
    cursor: pointer;
    padding: 1rem 0;
}

.progress-bar {
    width: 100px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: var(--white);
    transition: width 5s linear;
}

.progress-item.active .progress-bar::after {
    width: 100%;
}

.progress-text {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    white-space: nowrap;
    color: var(--white);
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.progress-item:hover .progress-text,
.progress-item.active .progress-text {
    opacity: 1;
}

@keyframes progressBar {
    from { width: 0; }
    to { width: 100%; }
}

/* 修改轮播图控制按钮样式 */
.slider-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 3;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hero-slider:hover .slider-controls {
    opacity: 1;
}

.prev-slide,
.next-slide {
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prev-slide:hover,
.next-slide:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

/* 向下滚动按钮样式 */
.scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    text-align: center;
    z-index: 3;
    cursor: pointer;
}

.arrow-down {
    display: block;
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: rotate(45deg);
    margin: 0 auto;
    margin-top: 10px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    40% {
        transform: translateY(-10px) rotate(45deg);
    }
    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}

.cta-button {
    background: var(--accent-orange);
    color: var(--white);
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 5px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 1rem;
}

.cta-button:hover {
    background: #ff8533;
}

/* 产品中心样式 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--dark-gray);
    margin-bottom: 3rem;
}

.products-grid {
    padding: 6rem 0;
    background: var(--light-gray);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

.product-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.product-icon {
    margin-bottom: 1.5rem;
}

.product-icon img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.product-item h3 {
    color: var(--dark-gray);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

.learn-more {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s ease;
}

.learn-more:hover {
    background: #0052a3;
}