*{
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
.neirong2 {
    position: relative;
    padding-top: 60px;
    background: #fff;
}

.container2 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.buy-crypto-intro {
    display: flex;
    align-items: center;
    margin-bottom: 80px;
}

.intro-content {
    flex: 1;
    padding-right: 60px;
}

.intro-content h1 {
    font-size: 48px;
    color: #1A1A1A;
    margin-bottom: 24px;
}

.subtitle {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
}

.intro-image {
    flex: 1;
}

.main-image {
    width: 100%;
    max-width: 500px;
}

.steps-section {
    margin-bottom: 80px;
}

.step-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}
#step1{
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}
.step-item {
    /* background: #F8F9FA; */
    border-radius: 12px;
    padding: 24px;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: rgb(83,235,175);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}

.step-content h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #1A1A1A;
}

.step-content p {
    color: #666;
    line-height: 1.6;
}

.features-section {
    margin-bottom: 80px;
}

.features-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(370px, 2fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 24px;
    background: rgba(0,0,0,0.03);
    border-radius: 12px;
    
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

.popular-crypto-section {
    margin-bottom: 80px;
}

.popular-crypto-section h2,.buy-methods-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
}

.crypto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.crypto-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background: #F8F9FA;
    border-radius: 8px;
    transition: all 0.3s;
}
.crypto-item:hover{
    background: rgba(0,0,0,0.03);
}
.crypto-item img {
    width: 40px;
    height: 40px;
    margin-right: 16px;
}

.crypto-info h4 {
    margin-bottom: 4px;
}

.crypto-price {
    color: rgba(0,0,0,.4);
    font-weight: bold;
}

.buy-methods-section {
    margin-bottom: 80px;
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.method-item {
    padding: 24px;
    background: #F8F9FA;
    border-radius: 12px;
}
.method-item img{
    margin-bottom: 20px;
}
.method-item h3 {
    font-size: 20px;
    margin-bottom: 16px;
}

.method-item p {
    color: #666;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .buy-crypto-intro {
        flex-direction: column;
        text-align: center;
    }

    .intro-content {
        padding-right: 0;
        margin-bottom: 40px;
    }

    .intro-content h1 {
        font-size: 36px;
    }

    .features-section h2,
    .popular-crypto-section h2,
    .buy-methods-section h2 {
        font-size: 28px;
    }
    .steps-main-image{
        position: unset !important;
    }
    .steps-container{
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    #step1{
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

    }
}
.steps-container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    align-items: center;
}

.steps-main-image {
    flex: 0 0 40%;
    position: sticky;
    top: 20px;
}

.steps-main-image img {
    width: 100%;
    height: auto;
}

.step-grid {
    flex: 0 0 60%;
    margin-top: 40px;
}

.step-item {
    position: relative;
    padding-left: 30px;
    /* margin-bottom: 40px; */
    /* width: 100%; */
    
}

.step-circle {
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    border: 1px solid #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
}
.steps-main-image{
    display: flex;
    justify-content: center;
    align-items: center;
}
.steps-main-image img{
    width: 300px;
    height: 300px;

    
}
.step-line {
    position: absolute;
    left: 11px;
    top: 24px;
    width: 1px;
    height: calc(100% + 16px);
    background-color: #000;
}

.step-item:last-child .step-line {
    display: none;
}

.step-item h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

.step-item p {
    margin: 0;
    color: #666;
    line-height: 1.5;
}