/* 全局样式 */
body {
    margin: 0;
    font-family: 'San Francisco', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #1C1C1E, #2D2D30);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    color: #0A84FF;
    font-weight: bold;
}

p {
    color: #3A3A3C;
    font-size: 18px;
}

a {
    text-decoration: none;
    color: #0A84FF;
    transition: all 0.3s ease;
}

a:hover {
    text-shadow: 0 0 10px #0A84FF;
}

button {
    background-color: #0A84FF;
    border: none;
    color: white;
    padding: 15px 30px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
}

button:hover {
    background-color: #0973E6;
    box-shadow: 0 0 15px #0A84FF;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 36px;
    }

    p {
        font-size: 16px;
    }
}

/* 英雄区 */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px;
    background: url('https://images.gptkong.com/product/iphone16/iphone16-1.png') no-repeat center center/contain;
    background-color: #1C1C1E;
    min-height: 50vh;
    margin-bottom: 50px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 32px;
    margin-bottom: 40px;
}

/* 功能与性能区 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.feature-item {
    background-color: #2D2D30;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: scale(1.05);
}

.feature-item img {
    max-width: 100%;
    height: auto;
    margin-bottom: 20px;
}

/* 质量与耐用性区 */
.quality {
    background-color: #1C1C1E;
    padding: 50px 20px;
    text-align: center;
    margin-bottom: 50px;
}

.quality img {
    max-width: 80%;
    height: auto;
    margin-bottom: 20px;
}

/* 设计与外观区 */
.design {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 50px;
}

.design img {
    width: 48%;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.design img:hover {
    transform: scale(1.1);
}

/* 用户价值维度区 */
.value {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.value-item {
    background-color: #2D2D30;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

/* 推广与传播区 */
.promotion {
    background-color: #1C1C1E;
    padding: 50px 20px;
    text-align: center;
    margin-bottom: 50px;
}

/* 购买体验优化 */
.buy-now {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

/* 页脚 */
.footer {
    background-color: #1C1C1E;
    color: #3A3A3C;
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}