/* 基础重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body, html {
    width: 100%;
    height: 100%;
    font-family: 'Roboto', sans-serif;
    color: #333;
    line-height: 1.6;
    background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%);
    overflow-x: hidden;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: background 0.3s ease;
}
header.scrolled {
    background: linear-gradient(90deg, #c0c0aa 0%, #1cefff 100%);
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}
nav a {
    color: #333;
    text-decoration: none;
    margin: 0 10px;
    font-size: 16px;
    transition: color 0.3s ease;
}
nav a:hover {
    color: #ff6f61;
}
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #b8cbb8 0%, #b8cbb8 0%, #b465da 0%, #cf6cc9 33%, #ee609c 66%, #ee609c 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}
.hero h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 48px;
    margin-bottom: 20px;
}
.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}
.cta-button {
    background-color: #ff6f61;
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 18px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.cta-button:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(255, 111, 97, 0.5);
}
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(265px, 1fr));
    gap: 20px;
    margin: 50px auto; 
}
.feature-card {
    background: linear-gradient(145deg, #ffffff 0%, #dcdcdc 100%);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}
.feature-card h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 24px;
    margin-bottom: 15px;
}
.quality-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 50px 20px;
    border-radius: 15px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}
.quality-section img {
    max-width: 45%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.design-section {
    display: flex;
    flex-wrap: wrap-reverse;
    justify-content: space-between;
    align-items: center;
    margin: 50px 0;
}
.design-section img {
    max-width: 45%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.testimonials {
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
    padding: 50px 20px;
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}
.purchase-section {
    background: linear-gradient(135deg, #8e9eab 0%, #eef2f3 100%);
    padding: 50px 20px;
    border-radius: 15px;
    text-align: center;
}
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }
    .features {
        grid-template-columns: 1fr;
    }
    .quality-section, .design-section {
        flex-direction: column;
    }
    .quality-section img, .design-section img {
        max-width: 100%;
        margin-top: 20px;
    }
}