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

body{
    background:#f5f5f7;
    font-family:'Segoe UI',sans-serif;
}

/* HEADER */

.mobile-header{
    background:#fff;
    height:72px;
    display:flex;
    align-items:center;
    justify-content:center;
    position:sticky;
    top:0;
    z-index:999;
    box-shadow:0 2px 10px rgba(0,0,0,.05);
}

.back-btn{
    position:absolute;
    left:20px;
    text-decoration:none;
    color:#111;
    font-size:28px;
    font-weight:bold;
}

.page-title{
    font-size:24px;
    font-weight:700;
    color:#222;
}

/* BANNER */

.info-banner{
    background:linear-gradient(135deg,#6c4cff,#5134ff);
    color:#fff;
    padding:14px;
    border-radius:14px;
    display:flex;
    align-items:center;
    gap:10px;
    font-weight:600;
    margin-bottom:18px;
}

.info-banner i{
    font-size:22px;
}

/* STEPS */

.steps{
    display:flex;
    justify-content:center;
    align-items:center;
    gap:10px;
    padding:20px 10px;
    font-size:14px;
    font-weight:600;
}

.steps .active{
    color:#6c4cff;
}

.steps span{
    color:#aaa;
}

/* BANNER */

.hero-banner{

    background:
    linear-gradient(
    135deg,
    #6c4cff,
    #5134ff
    );
    border-radius:24px;
    padding:25px;
    color:#fff;
    position:relative;
    overflow:hidden;
    margin-bottom:30px;
}

.hero-banner::after{

    content:'';

    position:absolute;

    width:180px;
    height:180px;

    border-radius:50%;

    background:rgba(255,255,255,.08);

    right:-50px;
    top:-50px;
}

.hero-banner h2{
    font-size:34px;
    font-weight:700;
    line-height:1.2;
    margin-bottom:10px;
}

.hero-banner p{
    margin:0;
    font-size:16px;
    opacity:.95;
}

/* DEVICE GRID */

/* DESKTOP = 4 CARDS */
.device-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
}

/* TABLET */
@media (max-width:991px){
    .device-grid{
        grid-template-columns:repeat(3,1fr);
    }
}

/* MOBILE = 2 CARDS */
@media (max-width:768px){
    .device-grid{
        grid-template-columns:repeat(2,1fr);
        gap:12px;
    }
}

.device-card{
    text-decoration:none;
    color:#111;
}

.device-box{
    background:#fff;
    border-radius:20px;
    border:2px solid #e7e7e7;
    padding:20px 15px;
    text-align:center;
    transition:.3s;
    height:100%;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
}

.device-box:hover{

    transform:translateY(-4px);

    border-color:#6c4cff;

    box-shadow:0 10px 25px rgba(108,76,255,.15);
}

.device-image{
    width:90px;
    height:90px;
    object-fit:contain;
}

.device-name{

    margin-top:10px;

    font-size:15px;

    font-weight:600;

    line-height:1.3;
}

.device-price{

    color:#6c4cff;

    font-size:13px;

    font-weight:600;

    margin-top:5px;
}

/* MOBILE */

@media(max-width:768px){

    .page-title{
        font-size:18px;
    }

    .steps{
        font-size:12px;
        gap:6px;
    }

    .hero-banner{
        padding:20px;
    }

    .hero-banner h2{
        font-size:18px;
    }

    .hero-banner p{
        font-size:13px;
    }

    .device-grid{
        grid-template-columns:repeat(2,1fr);
        gap:12px;
    }

    .device-image{
        width:75px;
        height:75px;
    }

    .device-name{
        font-size:14px;
    }
}

/* STEP BAR */

.step-bar{
    text-align:center;
    margin-bottom:20px;
    font-size:14px;
    font-weight:600;
}

.step-bar span{
    color:#a0a0a0;
}

.step-bar .active{
    color:#6c4cff;
}

.step-bar i{
    color:#c7c7c7;
    margin:0 8px;
}

/* REVIEWS SECTION */

.reviews-section{
    margin-top:50px;
}

.section-heading{
    text-align:center;
    margin-bottom:25px;
}

.section-heading h2{
    font-size:32px;
    font-weight:700;
    color:#111;
    margin-bottom:8px;
}

.section-heading p{
    color:#777;
    margin:0;
}

.reviews-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}

.review-card{
    background:#fff;
    border-radius:20px;
    padding:20px;
    box-shadow:0 5px 20px rgba(0,0,0,.06);
    transition:.3s;
}

.review-card:hover{
    transform:translateY(-4px);
}

.review-header{
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:15px;
}

.review-avatar{
    width:60px;
    height:60px;
    border-radius:50%;
    object-fit:cover;
}

.placeholder-avatar{
    background:#5134ff;
    color:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    font-weight:700;
    font-size:22px;
}

.review-name{
    font-size:16px;
    font-weight:700;
}

.review-stars{
    color:#f59e0b;
    margin-top:4px;
}

.review-text{
    color:#555;
    line-height:1.7;
    font-size:14px;
}

/* TABLET */

@media(max-width:991px){

    .reviews-grid{
        grid-template-columns:repeat(2,1fr);
    }

}

/* MOBILE */

@media(max-width:768px){

    .reviews-grid{
        grid-template-columns:1fr;
    }

    .section-heading h2{
        font-size:24px;
    }

}

.review-card{
    background:#fff;
    border-radius:20px;
    padding:20px;
    border:2px solid transparent;
    box-shadow:0 5px 20px rgba(0,0,0,.06);
    transition:all .3s ease;
}
.review-card:hover{
    transform:translateY(-4px);
    border:2px solid #6c4cff;
    box-shadow:0 10px 25px rgba(108,76,255,.15);
}