/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a,
a:link,
a:visited,
a:hover,
a:active {
    text-decoration: none;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #1a1a1a;
    color: #ffffff;
    min-height: 100vh;
}

/* 顶部导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: 16px 40px;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
}

.logo {
    height: 150px;
    object-fit: contain;
}

.product {
    height: 250px;
    object-fit: contain;
}

/* Hero Banner */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
    background-color: #2d3a2d;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 16px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-title sup {
    font-size: 20px;
}

.hero-subtitle {
    font-size: 22px;
    color: #c8b84a;
    font-weight: 300;
}

.hero-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 1;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: background-color 0.3s;
}

.dot.active {
    background-color: #ffffff;
}

/* 品牌介绍 */
.about {
    padding: 80px 40px;
    border-top: 1px solid #333;
}

.about-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    align-items: start;
}

.section-title-left {
    font-size: 28px;
    font-weight: bold;
    color: #ffffff;
    line-height: 1.4;
}

.about-content p {
    font-size: 14px;
    line-height: 2;
    color: #999;
    margin-bottom: 16px;
}

/* 产品核心 */
.product-core {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/product-bg.jpg') center/cover no-repeat;
    background-color: #2a3528;
}

.product-core-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.product-core-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.product-core-label {
    display: inline-block;
    font-size: 14px;
    color: #c8b84a;
    margin-bottom: 12px;
}

.product-core-title {
    font-size: 36px;
    font-weight: bold;
    color: #ffffff;
}

/* 四大优势 */
.features {
    padding: 80px 40px;
}

.features-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    border: 1px solid #333;
    border-radius: 8px;
    padding: 32px 20px;
    text-align: center;
    transition: border-color 0.3s;
}

.feature-card:hover {
    border-color: #666;
}

.feature-title {
    font-size: 20px;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
}

.feature-icon {
    margin-bottom: 20px;
}

.feature-icon svg {
    opacity: 0.7;
}

.feature-desc {
    font-size: 13px;
    color: #888;
    line-height: 1.8;
}

/* 渠道合作 */
.cooperation {
    padding: 80px 40px;
    border-top: 1px solid #333;
}

.cooperation-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.cooperation-left h2 {
    margin-bottom: 30px;
}

.cooperation-info {
    display: flex;
    gap: 60px;
}

.cooperation-col h4 {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 12px;
}

.cooperation-col ul {
    list-style: none;
}

.cooperation-col li {
    font-size: 13px;
    color: #888;
    margin-bottom: 8px;
}

.cooperation-right {
    padding: 40px;
    border: 1px solid #333;
    border-radius: 8px;
}

.cooperation-right h3 {
    font-size: 22px;
    color: #ffffff;
    margin-bottom: 8px;
}

.cooperation-slogan {
    font-size: 16px;
    color: #999;
    margin-bottom: 24px;
}

.cooperation-btn {
    display: inline-block;
    padding: 10px 24px;
    border: 1px solid #555;
    border-radius: 4px;
    color: #ffffff;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.cooperation-btn:hover {
    border-color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Footer */
.footer {
    border-top: 1px solid #333;
    padding: 24px 40px;
    text-align: center;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.footer p {
    font-size: 13px;
    color: #999;
}

/* 响应式 */
@media (max-width: 768px) {
    .header {
        padding: 12px 20px;
    }
    .hero-title {
        font-size: 28px;
    }
    .hero-subtitle {
        font-size: 16px;
    }
    .about-inner {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .features-inner {
        grid-template-columns: repeat(2, 1fr);
    }
    .cooperation-inner {
        grid-template-columns: 1fr;
    }
    .product-core {
        height: 300px;
    }
    .product-core-title {
        font-size: 24px;
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .features-inner {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 22px;
    }
    .cooperation-info {
        flex-direction: column;
        gap: 24px;
    }
}