/* 全局重置+基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "思源黑体", "Microsoft YaHei", sans-serif;
}
body {
    color: #333;
    background: #F5F7FA;
    font-size: 14px;
    line-height: 1.6;
    padding-top: 80px;
}
a {
    text-decoration: none;
    color: #0F52BA;
    transition: all 0.3s;
}
a:hover {
    color: #FF7D00;
}
ul, li {
    list-style: none;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.btn {
    display: inline-block;
    padding: 10px 25px;
    background: #0F52BA;
    color: #fff !important;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}
.btn:hover {
    background: #FF7D00;
    transform: translateY(-2px);
}
.btn-orange {
    background: #FF7D00;
}
.btn-orange:hover {
    background: #0F52BA;
}
.title {
    text-align: center;
    margin: 60px 0 40px;
}
.title h2 {
    font-size: 30px;
    color: #0F52BA;
    position: relative;
    padding-bottom: 15px;
}
.title h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: #FF7D00;
}
.title p {
    margin-top: 15px;
    color: #666;
    font-size: 16px;
}
/* 导航栏样式 */
.header {
    width: 100%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
}
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.logo {
    display: flex;
    align-items: center;
}
.logo img {
    height: 60px;
    margin-right: 10px;
}
.logo h1 {
    font-size: 20px;
    color: #0F52BA;
    font-weight: 700;
}
.nav-list {
    display: flex;
}
.nav-list li {
    margin-left: 30px;
}
.nav-list li a {
    font-size: 16px;
    color: #333;
    font-weight: 500;
}
.nav-list li a.active, .nav-list li a:hover {
    color: #FF7D00;
}
.hamburger {
    display: none;
    font-size: 24px;
    color: #0F52BA;
    cursor: pointer;
}
/* 轮播图样式 */
.banner {
    width: 100%;
    height: calc(100vh - 80px);
    position: relative;
    overflow: hidden;
}
.banner-item {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 100%;
    background: rgba(0,0,0,0.5);
    background-blend-mode: darken;
    background-size: cover;
    background-position: center;
    color: #fff;
    display: flex;
    align-items: center;
    transition: left 0.5s ease;
}
.banner-item.active {
    left: 0;
}
.banner-item .container {
    position: relative;
    z-index: 2;
}
.banner-item h2 {
    font-size: 40px;
    line-height: 1.3;
    margin-bottom: 20px;
}
.banner-item p {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 800px;
    opacity: 0.9;
}
.banner-dot {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    z-index: 3;
}
.banner-dot span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    margin: 0 8px;
    cursor: pointer;
    transition: all 0.3s;
}
.banner-dot span.active {
    background: #FF7D00;
    transform: scale(1.2);
}
/* 通用模块样式 */
.intro {
    padding: 40px 0;
    background: #fff;
    margin: 20px 0;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}
.intro p {
    font-size: 16px;
    color: #333;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
    line-height: 1.8;
}
.advantage-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}
.advantage-item {
    background: #fff;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: all 0.3s;
}
.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.advantage-item i {
    font-size: 36px;
    color: #0F52BA;
    margin-bottom: 20px;
}
.advantage-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
}
.advantage-item p {
    color: #666;
    font-size: 14px;
}
/* 工艺/案例/品质通用卡片 */
.card-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}
.card-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: all 0.3s;
}
.card-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.card-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.card-item .content {
    padding: 20px;
}
.card-item h3 {
    font-size: 18px;
    color: #0F52BA;
    margin-bottom: 10px;
}
.card-item p {
    color: #666;
    margin-bottom: 15px;
    font-size: 14px;
}
/* 应用场景样式 */
.scene-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.scene-item {
    position: relative;
    height: 280px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}
.scene-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s;
}
.scene-item:hover img {
    transform: scale(1.1);
}
.scene-item .mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(15,82,186,0.8));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 25px;
    color: #fff;
}
.scene-item .mask h3 {
    font-size: 20px;
    margin-bottom: 10px;
}
.scene-item .mask p {
    font-size: 14px;
    opacity: 0.9;
}
/* 案例筛选+列表 */
.case-filter {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.case-filter li {
    margin: 0 10px 10px;
    padding: 8px 20px;
    background: #fff;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid #e5e9f2;
}
.case-filter li.active, .case-filter li:hover {
    background: #0F52BA;
    color: #fff;
    border-color: #0F52BA;
}
.case-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.case-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    transition: all 0.3s;
}
.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.case-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}
.case-item .content {
    padding: 20px;
}
.case-item h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}
.case-item .tag {
    display: inline-block;
    padding: 3px 8px;
    background: #e5e9f2;
    color: #0F52BA;
    font-size: 12px;
    border-radius: 4px;
    margin-bottom: 10px;
}
.case-item p {
    color: #666;
    font-size: 14px;
}
/* 品质控制流程 */
.quality-process {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin-bottom: 40px;
}
.quality-process img {
    width: 100%;
    border-radius: 4px;
    margin: 20px 0;
}
.quality-process p {
    color: #666;
    line-height: 1.8;
}
/* 关于我们-生产实力 */
.strength {
    background: #fff;
    padding: 40px 0;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin: 20px 0;
}
.strength-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.strength-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}
.strength-item h3 {
    color: #0F52BA;
    font-size: 18px;
    text-align: center;
}
/* 咨询区样式 */
.contact-box {
    background: #0F52BA;
    color: #fff;
    padding: 60px 0;
    margin: 40px 0;
    border-radius: 8px;
}
.contact-box .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}
.contact-box .text h3 {
    font-size: 28px;
    margin-bottom: 15px;
}
.contact-box .text p {
    font-size: 16px;
    opacity: 0.9;
    max-width: 600px;
}
.contact-box .form {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
}
.contact-box .form input, .contact-box .form textarea {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 15px;
    border: 1px solid #e5e9f2;
    border-radius: 4px;
    outline: none;
    font-size: 14px;
}
.contact-box .form input:focus, .contact-box .form textarea:focus {
    border-color: #0F52BA;
}
.contact-box .form textarea {
    height: 100px;
    resize: none;
}
/* 联系我们-信息模块 */
.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 40px 0;
}
.contact-info .item {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}
.contact-info .item h3 {
    color: #0F52BA;
    font-size: 20px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}
.contact-info .item h3 i {
    font-size: 24px;
    margin-right: 10px;
}
.contact-info .item p {
    color: #666;
    font-size: 16px;
    margin-bottom: 15px;
    line-height: 1.8;
}
.contact-info .item p i {
    color: #FF7D00;
    margin-right: 10px;
    width: 20px;
    text-align: center;
}
.contact-info .item .map {
    width: 100%;
    height: 300px;
    border-radius: 4px;
    margin-top: 20px;
    border: 1px solid #e5e9f2;
}
/* 底部样式 */
.footer {
    background: #333;
    color: #ccc;
    padding: 60px 0 30px;
    margin-top: 40px;
}
.footer .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.footer-item h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #444;
}
.footer-item li {
    margin-bottom: 10px;
}
.footer-item li a {
    color: #ccc;
}
.footer-item li a:hover {
    color: #FF7D00;
}
.footer-item .info {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}
.footer-item .info i {
    font-size: 18px;
    color: #FF7D00;
    margin-right: 10px;
    width: 20px;
    text-align: center;
}
.copyright {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid #444;
    color: #888;
    font-size: 13px;
}
/* 悬浮咨询 */
.float-contact {
    position: fixed;
    right: 20px;
    bottom: 30px;
    z-index: 998;
}
.float-contact a {
    display: block;
    width: 50px;
    height: 50px;
    background: #0F52BA;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-size: 20px;
    margin-bottom: 10px;
    box-shadow: 0 3px 10px rgba(15,82,186,0.3);
    transition: all 0.3s;
}
.float-contact a:hover {
    background: #FF7D00;
    transform: scale(1.1);
}
/* 响应式适配（移动端） */
@media (max-width: 1200px) {
    .advantage-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .card-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .scene-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .case-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .strength-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-info {
        grid-template-columns: 1fr;
    }
    .footer .container {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 80%;
        height: calc(100vh - 80px);
        background: #fff;
        flex-direction: column;
        padding: 30px;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
        z-index: 999;
    }
    .nav-list.active {
        right: 0;
    }
    .nav-list li {
        margin: 0 0 20px 0;
    }
    .hamburger {
        display: block;
    }
    .banner-item h2 {
        font-size: 28px;
    }
    .banner-item p {
        font-size: 16px;
    }
    .advantage-list {
        grid-template-columns: 1fr;
    }
    .card-list {
        grid-template-columns: 1fr;
    }
    .scene-list {
        grid-template-columns: 1fr;
    }
    .case-list {
        grid-template-columns: 1fr;
    }
    .strength-list {
        grid-template-columns: 1fr;
    }
    .footer .container {
        grid-template-columns: 1fr;
    }
    .contact-box .container {
        justify-content: center;
    }
    .contact-box .text {
        text-align: center;
    }
    .quality-process {
        padding: 20px;
    }
}
@media (max-width: 480px) {
    .logo h1 {
        font-size: 16px;
    }
    .title h2 {
        font-size: 24px;
    }
    .banner-item h2 {
        font-size: 22px;
    }
    .contact-box h3 {
        font-size: 24px;
    }
}