/* 基础重置（复用） */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 按钮样式（复用） */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #0066ff;
    color: #fff;
}

.btn-primary:hover {
    background-color: #0052cc;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

/* 导航栏（复用） */
.header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.logo img {
    height: 40px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 25px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #0066ff;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* 第五版英雄区 */
.hero-v5 {
    background-color: #c9c9c9;
    color: #fff;
    padding: 40px 0;
}

.hero-v5 .hero-content h1 {
    font-size: 36px;
    margin-bottom: 8px;
}

.hero-v5 .hero-desc {
    font-size: 13px;
    max-width: 500px;
    margin-bottom: 15px;
    opacity: 0.9;
}

.hero-v5 .hero-size {
    font-size: 12px;
    color: #999;
    margin-bottom: 20px;
}

/* 步骤卡片区 */
.steps-section {
    padding: 40px 0;
}

.section-title {
    font-size: 26px;
    margin-bottom: 10px;
    text-align: center;
}

.section-desc {
    font-size: 13px;
    color: #555;
    text-align: center;
    margin-bottom: 30px;
}

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

.step-card {
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.step-number {
    width: 25px;
    height: 25px;
    background-color: #0066ff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    margin: 0 auto 15px;
}

.step-card h3 {
    font-size: 14px;
    margin-bottom: 8px;
}

.step-card p {
    font-size: 12px;
    color: #555;
}

/* 产品网格v5 */
.product-grid-v5 {
    padding: 40px 0;
}

.grid-wrapper-v5 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.grid-item-v5 {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card-media-v5 {
    background-color: #eaeaea;
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #999;
    margin-bottom: 10px;
}

.sku {
    font-size: 11px;
    color: #999;
    margin-bottom: 5px;
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}

/* 半宽横幅v5 */
.half-banner-v5 {
    background-color: #eaeaea;
    padding: 40px 0;
    margin: 40px 0;
}

.half-banner-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    align-items: center;
    gap: 30px;
}

.half-banner-text h2 {
    font-size: 26px;
    margin-bottom: 15px;
}

.half-banner-text p {
    font-size: 13px;
    color: #555;
    margin-bottom: 20px;
}

.half-banner-media {
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #999;
}

/* 服务网格v5 */
.service-grid-v5 {
    padding: 40px 0;
}

.view-all-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-size: 13px;
    color: #0066ff;
    text-decoration: none;
    margin-bottom: 30px;
}

.service-wrapper-v5 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card-v5 {
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.service-media-v5 {
    background-color: #eaeaea;
    width: 60px;
    height: 60px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: #999;
    margin-bottom: 15px;
}

.service-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.service-desc {
    font-size: 12px;
    color: #555;
    text-align: center;
}

/* 客户案例网格v5 */
.case-grid-v5 {
    padding: 40px 0;
    background-color: #f9f9f9;
}

.case-wrapper-v5 {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.case-card-v5 {
    display: flex;
    flex-direction: column;
    background-color: #fff;
}

.case-media-v5 {
    background-color: #d0d0d0;
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #999;
    margin-bottom: 10px;
}

.case-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 5px;
    padding: 0 10px;
}

.readmore-link {
    font-size: 12px;
    color: #0066ff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 0 10px 10px;
}

.carousel-dots-v5 {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.carousel-dots-v5 .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #ccc;
}

.carousel-dots-v5 .dot.active {
    background-color: #0066ff;
}

/* 底部CTA v5 */
.bottom-cta-v5 {
    padding: 40px 0;
    text-align: center;
}

/* 右侧悬浮按钮（复用） */
.float-contact {
    position: fixed;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
}

.float-btn {
    width: 40px;
    height: 40px;
    background-color: #999;
    color: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.float-btn:hover {
    background-color: #0066ff;
}

/* 页脚（复用） */
.footer {
    background-color: #0a1a33;
    color: #fff;
    padding: 40px 0 20px;
}

.footer-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo {
    font-size: 32px;
    margin-bottom: 10px;
}

.footer-col p {
    font-size: 13px;
    color: #ccc;
}

.read-more {
    color: #0066ff;
    text-decoration: none;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: #ccc;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: #0066ff;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #ccc;
    font-size: 13px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid #223a5e;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    color: #fff;
    font-size: 16px;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #0066ff;
}

.copyright {
    font-size: 12px;
    color: #ccc;
    display: flex;
    align-items: center;
    gap: 10px;
}

.go-top {
    width: 25px;
    height: 25px;
    background-color: #0066ff;
    color: #fff;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* 响应式适配（复用+新增） */
@media (max-width: 992px) {
    .steps-wrapper {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-wrapper-v5 {
        grid-template-columns: repeat(2, 1fr);
    }
    .half-banner-wrapper {
        grid-template-columns: 1fr;
    }
    .service-wrapper-v5 {
        grid-template-columns: repeat(2, 1fr);
    }
    .case-wrapper-v5 {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-wrapper {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero-v5 .hero-content h1 {
        font-size: 28px;
    }
    .section-title {
        font-size: 22px;
    }
    .steps-wrapper {
        grid-template-columns: 1fr;
    }
    .grid-wrapper-v5 {
        grid-template-columns: 1fr;
    }
    .service-wrapper-v5 {
        grid-template-columns: 1fr;
    }
    .case-wrapper-v5 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .case-wrapper-v5 {
        grid-template-columns: 1fr;
    }
    .footer-wrapper {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
    }
    .float-contact {
        right: 5px;
    }
    .float-btn {
        width: 35px;
        height: 35px;
    }
}

/* 波纹动画（复用） */
.btn {
    position: relative;
    overflow: hidden;
}
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
}
@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}