.product {
    background: #FFFFFF;
    padding: 2rem 0;
}

.product .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product_info h3 {
    font-size: 2.25rem;
    font-weight: 400;
    margin-bottom: .625rem;
    width: 40rem;
}

.product_info h5 {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: .625rem;
    width: 40rem;
}

.product_info p {
    font-size: .875rem;
    font-weight: 400;
    color: #999;
    width: 40rem;
    margin-bottom: 2rem;
}

.pro_btn button {
    background: #00a0e9;
    color: #fff;
    font-size: 1.2rem;
    padding: .625rem 1.25rem;
    border-radius: .25rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 .125rem .5rem rgba(0, 160, 233, 0.2);
}

.pro_btn button:hover {
    background: #007bb5;
    box-shadow: 0 .25rem .9375rem rgba(0, 160, 233, 0.4);
    transform: translateY(-0.125rem);
}

.pro_btn button:active {
    transform: translateY(0);
    box-shadow: 0 .125rem .5rem rgba(0, 160, 233, 0.3);
}

.product_img img {
    width: 25rem;
    margin-right: 5rem;
}

.features {
    background: #F5F5F5;
    padding: 3.125rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2.5rem 1.25rem;
    margin-bottom: 3.75rem;
}

.feature-item {
    text-align: center;
}

.icon {
    width: 7.5rem;
    height: 7.5rem;
    background: #fff;
    border-radius: 50%;
    margin: 0 auto .9375rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 .25rem .625rem rgba(0, 0, 0, 0.05);
    font-size: 1.875rem;
}

.icon img {
    width: 4rem;
}

.feature-item h3 {
    margin: .3125rem 0;
    font-size: 1.25rem;
    color: #262626;
    font-weight: 400;
}

.feature-item p {
    margin: 0;
    font-size: .875rem;
    color: #999;
}

/* 下部材质对比 */
.material-comparison {
    display: flex;
    justify-content: space-between;
    gap: 1.25rem;
}

.material-card {
    flex: 1;
    background: #FFFFFF;
    padding: 1.875rem 1.25rem;
    margin: 1rem;
    text-align: center;
    border-radius: .25rem;
    transition: all 0.3s ease;
}

.material-card:hover {
    transform: translateY(-0.3125rem);
    box-shadow: 0 .25rem .625rem rgba(0, 0, 0, 0.05);
}

.material-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    border-bottom: .0625rem solid #f0f0f0;
    padding-bottom: .625rem;
    font-weight: 400;
}

.material-img {
    width: 100%;
    height: 11.25rem;
    background: #f9f9f9;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.material-img img {
    max-width: 100%;
    mix-blend-mode: multiply;
}

.specs {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem 0;
    line-height: 1.8;
    font-weight: bold;
}

.specs li {
    margin-bottom: .3125rem;
    font-size: 1rem;
    font-weight: 400;
}

.description {
    text-align: left;
    font-size: .8125rem;
    color: #666;
    line-height: 1.6;
    border-top: .0625rem solid #f0f0f0;
    padding-top: .9375rem;
}

.eco-friendly {
    color: #2e7d32;
}

.non-eco {
    color: #555;
}

.section-features {
    background-color: #00a0e9;
    padding: 3.125rem 0rem;
    overflow: hidden;
}

.main-wrapper {
    width: 75rem;
    height: 40.625rem;
    position: relative;
    margin: 0 auto;
}

/* --- 动态实心圆扩散背景 --- */
.bg-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.solid-circle {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 6.25rem;
    height: 6.25rem;
    background-color: #007fb9;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: solidRipple 6s infinite ease-out;
    opacity: 0;
}

/* 设置层级延迟，形成连续扩散感 */
.solid-circle:nth-child(1) {
    animation-delay: 0s;
}

.solid-circle:nth-child(2) {
    animation-delay: 1s;
}

.solid-circle:nth-child(3) {
    animation-delay: 2s;
}

.solid-circle:nth-child(4) {
    animation-delay: 3s;
}

.solid-circle:nth-child(5) {
    animation-delay: 5s;
}

@keyframes solidRipple {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.6;
    }

    100% {
        transform: translate(-50%, -50%) scale(8);
        opacity: 0;
    }
}

/* --- 产品图叠加部分 --- */
.product-stack {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 25rem;
    height: 25rem;
    z-index: 10;
}

/* 模拟拆解层级叠加 */
.layer {
    position: absolute;
    width: 26.25rem;
    transition: transform 0.5s ease;
}

.layer img {
    width: 100%;
    /* filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.2)); */
    transition: all 0.2s ease;
}

.layer img:hover~.text-1 {
    transform: scale(0.9);
}

.desc-block {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* 反向联动：文字悬停时高亮对应图层 */
.main-wrapper:has(.text-1:hover) .l1 {
    transform: scale(1.1);
    filter: drop-shadow(0 .625rem .9375rem rgba(0, 0, 0, 0.2));
}

.main-wrapper:has(.text-1:hover) .desc-block:not(.text-1) {
    opacity: 0.5;
}

.main-wrapper:has(.text-2:hover) .l3 {
    transform: scale(1.1);
    filter: drop-shadow(0 .625rem .9375rem rgba(0, 0, 0, 0.2));
}

.main-wrapper:has(.text-2:hover) .desc-block:not(.text-2) {
    opacity: 0.5;
}

.main-wrapper:has(.text-3:hover) .l5 {
    transform: scale(1.1);
    filter: drop-shadow(0 .625rem .9375rem rgba(0, 0, 0, 0.2));
}

.main-wrapper:has(.text-3:hover) .desc-block:not(.text-3) {
    opacity: 0.5;
}

.main-wrapper:has(.text-4:hover) .l2 {
    transform: scale(1.1);
    filter: drop-shadow(0 .625rem .9375rem rgba(0, 0, 0, 0.2));
}

.main-wrapper:has(.text-4:hover) .desc-block:not(.text-4) {
    opacity: 0.5;
}

.main-wrapper:has(.text-5:hover) .l4 {
    transform: scale(1.1);
    filter: drop-shadow(0 .625rem .9375rem rgba(0, 0, 0, 0.2));
}

.main-wrapper:has(.text-5:hover) .desc-block:not(.text-5) {
    opacity: 0.5;
}

.main-wrapper:has(.text-6:hover) .l6 {
    transform: scale(1.1);
    filter: drop-shadow(0 .625rem .9375rem rgba(0, 0, 0, 0.2));
}

.main-wrapper:has(.text-6:hover) .desc-block:not(.text-6) {
    opacity: 0.5;
}

/* 手动调整每一层的位置实现“炸开”感 */
.l1 {
    top: 0rem;
    z-index: 6;
}

.l2 {
    top: 1.875rem;
    z-index: 5;
}

.l3 {
    top: 3.75rem;
    z-index: 4;
}

.l4 {
    top: 5.625rem;
    z-index: 3;
}

.l5 {
    top: 7.5rem;
    z-index: 2;
    left: -10rem;
    width: 36.25rem;
}

.l6 {
    top: 9.375rem;
    z-index: 1;
}

/* --- 文字描述块样式 --- */
.desc-block {
    position: absolute;
    width: 17.5rem;
    z-index: 20;
}

.desc-block h2 {
    position: relative;
    font-size: 1.75rem;
    margin: 0 0 .625rem 0;
    display: inline-block;
    z-index: 999;
    color: #fff;
    font-weight: 400;
}

.desc-block p {
    font-size: .8125rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    margin: .3125rem 0;
    position: relative;
    z-index: 999;
}

/* --- 各板块坐标定位 --- */
.pos-left-top {
    top: 3.125rem;
    left: 1.25rem;
}

.pos-left-mid {
    top: 13.75rem;
    left: 1.25rem;
}

.pos-left-btm {
    top: 26.25rem;
    left: 1.25rem;
}

.pos-right-top {
    top: 1.875rem;
    right: 1.25rem;
}

.pos-right-mid {
    top: 15.625rem;
    right: 1.25rem;
}

.pos-right-btm {
    top: 28.75rem;
    right: 1.25rem;
}

/* --- 辅助线 --- */
.text-1::before {
    content: "";
    position: absolute;
    left: 0;
    top: 2.5rem;
    width: 31.25rem;
    height: 7.5rem;
    /* background: rgb(255, 255, 255, 0.5); */
    border-top: .0625rem solid rgb(255, 255, 255);
    border-right: .0625rem solid rgb(255, 255, 255);
    z-index: 0;
}

.text-1::after {
    content: "";
    width: .5rem;
    height: .5rem;
    background-color: white;
    position: absolute;
    left: 31.0625rem;
    top: 10rem;
    border-radius: 50%;
}

.text-2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 2.5rem;
    width: 25rem;
    height: 3.125rem;
    /* background: rgb(255, 255, 255, 0.5); */
    border-top: .0625rem solid rgb(255, 255, 255);
    border-right: .0625rem solid rgb(255, 255, 255);
    z-index: 0;
}

.text-2::after {
    content: "";
    width: .5rem;
    height: .5rem;
    background-color: white;
    position: absolute;
    left: 24.8125rem;
    top: 5.3125rem;
    border-radius: 50%;
}

.text-3::before {
    content: "";
    position: absolute;
    left: 0;
    top: -3.125rem;
    width: 25rem;
    height: 5.625rem;
    /* background: rgb(255, 255, 255, 0.5); */
    border-bottom: .0625rem solid rgb(255, 255, 255);
    border-right: .0625rem solid rgb(255, 255, 255);
    z-index: 0;
}

.text-3::after {
    content: "";
    width: .5rem;
    height: .5rem;
    background-color: white;
    position: absolute;
    left: 24.8125rem;
    top: -3.25rem;
    border-radius: 50%;
}

.text-4::before {
    content: "";
    position: absolute;
    right: 12.1875rem;
    top: 2.5rem;
    width: 13.125rem;
    height: 11.25rem;
    /* background: rgb(255, 255, 255, 0.5); */
    border-top: .0625rem solid rgb(255, 255, 255);
    border-left: .0625rem solid rgb(255, 255, 255);
    z-index: 0;
}

.text-4::after {
    content: "";
    width: .5rem;
    height: .5rem;
    background-color: white;
    position: absolute;
    right: 25.0625rem;
    top: 13.75rem;
    border-radius: 50%;
}

.text-5::before {
    content: "";
    position: absolute;
    right: 12.1875rem;
    top: 2.5rem;
    width: 11.875rem;
    height: .625rem;
    /* background: rgb(255, 255, 255, 0.5); */
    border-top: .0625rem solid rgb(255, 255, 255);
    border-left: .0625rem solid rgb(255, 255, 255);
    z-index: 0;
}

.text-5::after {
    content: "";
    width: .5rem;
    height: .5rem;
    background-color: white;
    position: absolute;
    right: 23.8125rem;
    top: 3.125rem;
    border-radius: 50%;
}

.text-6::before {
    content: "";
    position: absolute;
    right: 10.625rem;
    top: -3.125rem;
    width: 18.75rem;
    height: 5.625rem;
    /* background: rgb(255, 255, 255, 0.5); */
    border-bottom: .0625rem solid rgb(255, 255, 255);
    border-left: .0625rem solid rgb(255, 255, 255);
    z-index: 0;
}

.text-6::after {
    content: "";
    width: .5rem;
    height: .5rem;
    background-color: white;
    position: absolute;
    right: 29.0625rem;
    top: -3.75rem;
    border-radius: 50%;
}

.inner h1 {
    font-size: 1.5rem;
    font-weight: 400;
    margin: 1.875rem 0 1.875rem 0;
    color: #000;
}

.inner .section {
    margin-bottom: 1.5625rem;
}

.inner .label {
    display: inline-block;
    background-color: #00a0e9;
    color: white;
    padding: .25rem .9375rem;
    border-radius: 1.25rem;
    font-size: 1rem;
    margin-bottom: .5rem;
}

.inner   .content {
    font-size: .875rem;
    line-height: 1.6;
    color: #333;
    margin-left: .125rem;
}
.extra_text {
    margin-top: 3rem;
}
.extra_text p{
    line-height: 1.6;
    color: #363636;
    font-size: .875rem;
}
.product_text {
    background: #FFFFFF;
    padding: 3rem 0;
}
.product_text h3{
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: .875rem;
}
.product_text p{
    font-size: 1rem;
    line-height: 1.6;
    color: #363636;
}