*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:"PingFang SC","Microsoft YaHei",sans-serif;
}

body{
    background:#111;
    display:flex;
    justify-content:center;
}

.phone{
    width:390px;
    min-height:100vh;
    background:#000;
    overflow:hidden;
    position:relative;
}

.header{
    width:100%;
    height:60px;          /* 你可以按图片比例改高度 */
    overflow:hidden;
}

.header img{
    width:100%;
    height:100%;
    object-fit:cover;     /* 保持铺满不变形 */
    display:block;
}

/* 轮播 */
.swiper{
    width:100%;
    height:220px;
    overflow:hidden;
    position:relative;
}

.swiper-wrapper{
    display:flex;
    transition:transform .5s ease;
}

.slide{
    min-width:100%;
    height:220px;
}

.slide img{
    width:100%;
    height:100%;
    object-fit:cover;
}

/* 小圆点 */
.dots{
    position:absolute;
    bottom:10px;
    width:100%;
    text-align:center;
}

.dots span{
    display:inline-block;
    width:8px;
    height:8px;
    border-radius:50%;
    background:#fff;
    margin:0 4px;
    opacity:.4;
}

.dots .active{
    opacity:1;
    background:#ffd700;
}

/* 标题 */
.section-title{
    color:#ffd700;
    padding:15px;
    font-size:18px;
    text-align:center;
}

/* 九宫格 */
.grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:10px;
    padding:0 15px;
}

.brand{
    background:#111;
    border:1px solid #333;
    height:70px;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    border-radius:8px;
}

/* 按钮区 */
.actions{ padding:15px; }

.action-row{
    display:flex;
    gap:10px;
    margin-bottom:12px;
}

.small-btn{
    flex:1;
    padding:10px 0;
    background:#222;
    color:#fff;
    text-align:center;
    border-radius:8px;
}

.big-btn{
    width:100%;
    padding:15px 0;
    border-radius:8px;
    background:linear-gradient(#ffd700,#b8860b);
    color:#000;
    font-weight:bold;
    font-size:18px;
    text-align:center;
}