/* 公共CSS样式 */
:root {
    --primary-blue: #1a6dfc;
    --secondary-blue: #4d8df8;
    --light-blue: #e8f1ff;
    --dark-blue: #0a4cb3;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    color: var(--dark-blue);
    font-size: 2.2rem;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-color);
    font-size: 1.1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    background-color: var(--primary-blue);
    color: white;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 109, 252, 0.3);
}

/* 加载动画样式 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-blue);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 70px;
    height: 70px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

/* 导航栏样式 - 更新 */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    position: relative;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo i {
    margin-right: 10px;
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links > li {
    margin-left: 30px;
    position: relative;
}

.nav-links > li > a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    display: block;
}

.nav-links > li > a:hover,
.nav-links > li > a.active {
    background-color: var(--primary-blue);
    color: white;
}

/* 下拉菜单样式 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 220px;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.nav-links > li:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--light-gray);
}

.dropdown-menu a:hover {
    background-color: var(--light-blue);
    color: var(--primary-blue);
}

.dropdown-menu li:last-child a {
    border-bottom: none;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-blue);
    cursor: pointer;
}

/* 幻灯片样式 */
.slider-section {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.slider {
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.slide-content h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
}

.slide-content p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.slide-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.slide-1 .slide-bg {
    background-color: #0a4cb3;
    background-image: linear-gradient(
            rgba(10, 76, 179, 0.7),
            rgba(10, 76, 179, 0.7)
        ),
        url('https://images.unsplash.com/photo-1553062407-98eeb64c6a62?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
}

.slide-2 .slide-bg {
    background-color: #1a6dfc;
    background-image: linear-gradient(
            rgba(26, 109, 252, 0.7),
            rgba(26, 109, 252, 0.7)
        ),
        url('https://images.unsplash.com/photo-1584917865442-de89df76afd3?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
}

.slide-3 .slide-bg {
    background-color: #4d8df8;
    background-image: linear-gradient(
            rgba(77, 141, 248, 0.7),
            rgba(77, 141, 248, 0.7)
        ),
        url('https://images.unsplash.com/photo-1548036328-c9fa89d128fa?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2069&q=80');
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    z-index: 3;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.slider-dot.active {
    background-color: white;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 3;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.4);
}

.slider-arrow.prev {
    left: 20px;
}

.slider-arrow.next {
    right: 20px;
}

/* 为什么选择我们样式 */
.why-us {
    background-color: var(--white);
}

/* 产品介绍样式 */
.product-intro {
    background-color: var(--white);
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 60px;
}

.intro-text {
    flex: 1;
}

.intro-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.intro-image:hover img {
    transform: scale(1.05);
}

.intro-text h2 {
    margin-bottom: 20px;
    color: var(--dark-blue);
    font-size: 1.8rem;
}

.intro-text p {
    margin-bottom: 20px;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-10px);
}

.feature i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.feature h3 {
    margin-bottom: 15px;
    color: var(--dark-blue);
}

/* 关于我们样式 */
.about {
    background-color: var(--light-blue);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 分类样式 */
.categories {
    background-color: var(--white);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.category-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    text-decoration: none;
    color: inherit;
}

.category-card:hover {
    transform: translateY(-10px);
}

.category-image {
    height: 60px;
    background-color: var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-size: 3rem;
}

.category-info {
    padding: 5px 20px;
    text-align: center;
}

.category-info h3 {
    margin-bottom: 10px;
    color: var(--dark-blue);
}

/* 产品样式 - 修复布局问题 */
.products {
    background-color: var(--white);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.product-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-image {
    height: 200px;
    width: 100%; /* 确保图片宽度自适应 */
    background-color: var(--light-blue);
    display: flex;
    justify-content: center;
    align-items: center; /* 垂直水平居中图片 */
    color: var(--primary-blue);
    font-size: 3rem;
}

.product-image img {
    width: 100%; /* 让图片自适应宽度 */
    height: 100%; /* 确保高度固定 */
    object-fit: cover; /* 保证图片不被拉伸，保持比例填充容器 */
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    margin-bottom: 10px;
    color: var(--dark-blue);
    text-align: center; /* 文字居中 */
}

/* 证书样式 */
.certificates {
    background-color: var(--light-blue);
}

.certificate-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.certificate {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.certificate i {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

/* FAQ样式 */
.faq {
    background-color: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.faq-question {
    background-color: var(--light-blue);
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 20px;
    max-height: 500px;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* 底部样式 */
footer {
    background-color: #1a1a2e;
    color: var(--white);
    padding: 70px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 50px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: var(--white);
    font-size: 1.3rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #b0b0b0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
}

.contact-info p {
    margin-bottom: 10px;
    color: #b0b0b0;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: var(--border-radius);
    border: 1px solid #444;
    background-color: #2d3047;
    color: var(--white);
}

.contact-form textarea {
    height: 100px;
    resize: vertical;
}

/* 验证码样式 - 固定长度 */
.captcha-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

/**制定流程页面*/

/* 路径历史样式 */
.breadcrumb {
    background-color: var(--light-blue);
    padding: 20px 0;
    margin-top: 20px;
}

.breadcrumb-content {
    display: flex;
    align-items: center;
    font-size: 0.95rem;
}

.breadcrumb a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 10px;
    color: var(--text-color);
}

.process-flow {
    background-color: var(--white);
}

.process-timeline {
    position: relative;
    max-width: 1200px;
    margin: 50px auto;
}

.process-timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--light-blue);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.timeline-container {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-container:nth-child(odd) {
    left: 0;
}

.timeline-container:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 20px 30px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
    transition: transform 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-container:nth-child(odd) .timeline-content::after {
    content: ' ';
    position: absolute;
    top: 15px;
    right: -15px;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-left: 15px solid var(--white);
}

.timeline-container:nth-child(even) .timeline-content::after {
    content: ' ';
    position: absolute;
    top: 15px;
    left: -15px;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-right: 15px solid var(--white);
}

.timeline-icon {
    position: absolute;
    width: 50px;
    height: 50px;
    background-color: var(--primary-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    z-index: 1;
    top: 15px;
}

.timeline-container:nth-child(odd) .timeline-icon {
    right: -25px;
}

.timeline-container:nth-child(even) .timeline-icon {
    left: -25px;
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: var(--dark-blue);
}

.timeline-image {
    margin-top: 15px;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.timeline-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.timeline-image:hover img {
    transform: scale(1.05);
}

/* FAQ样式 */
.faq-section {
    background-color: var(--white);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.faq-category-btn {
    background-color: var(--light-blue);
    color: var(--dark-blue);
    border: none;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-category-btn:hover,
.faq-category-btn.active {
    background-color: var(--primary-blue);
    color: white;
}

.faq-items {
    margin-bottom: 50px;
}

.faq-category {
    display: none;
}

.faq-category.active {
    display: block;
}

.faq-item {
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-5px);
}

.faq-question {
    background-color: var(--light-blue);
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #dbe8ff;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    background-color: var(--white);
}

.faq-item.active .faq-answer {
    padding: 20px;
    max-height: 500px;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* 联系表单样式 */
.contact-form-section {
    background-color: var(--light-blue);
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-blue);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-blue);
    outline: none;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* 验证码样式 */
.captcha-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.captcha-container {
    display: flex;
    gap: 5px;
    width: 160px;
}

.captcha-code {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f0f0;
    color: #333;
    font-weight: bold;
    font-size: 1.2rem;
    letter-spacing: 3px;
    border-radius: var(--border-radius);
    user-select: none;
    min-height: 48px;
}

.refresh-captcha {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0 12px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.refresh-captcha:hover {
    background-color: var(--dark-blue);
}

#captcha-input {
    flex: 1;
    margin-bottom: 0;
}
/* 定制选项样式 */
.customization-options {
    background-color: var(--light-blue);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.option-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.option-image {
    height: 250px;
    background-color: var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.option-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.option-info {
    padding: 25px;
}

.option-info h3 {
    margin-bottom: 15px;
    color: var(--dark-blue);
}

.option-list {
    list-style: none;
    margin-bottom: 20px;
}

.option-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
}

.option-list i {
    color: var(--primary-blue);
    margin-right: 10px;
    margin-top: 5px;
}

/**  制定流程页面     */

.captcha-container {
    display: flex;
    gap: 5px;
    width: 160px;
    /* 固定宽度 */
}

.captcha-code {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f0f0;
    color: #333;
    font-weight: bold;
    font-size: 1.2rem;
    letter-spacing: 3px;
    border-radius: var(--border-radius);
    user-select: none;
    min-height: 48px;
}

.refresh-captcha {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0 12px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.refresh-captcha:hover {
    background-color: var(--dark-blue);
}

#captcha-input {
    flex: 1;
    margin-bottom: 0;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background-color: var(--primary-blue);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #b0b0b0;
}

.keywords {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: #b0b0b0;
}

/* 悬浮联系方块样式 */
.floating-contact {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--primary-blue);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
}

.contact-icons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-icon {
    color: var(--white);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.contact-icon:hover {
    background-color: var(--white);
    color: var(--primary-blue);
    transform: scale(1.1);
}
/* 微信二维码样式 - 更新为悬停显示 */
.wechat-qr {
    position: absolute;
    left: -140px;
    top: 0;
    width: 120px;
    height: 120px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    padding: 10px;
    display: none;
    z-index: 1000;
}

.wechat-icon:hover .wechat-qr {
    display: block;
}

.wechat-qr img {
    width: 100%;
    height: 100%;
    border-radius: 5px;
}

.wechat-qr::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -10px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid white;
}
/* 响应式设计 */
@media (max-width: 1024px) {
    .product-grid,
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .slide-content h2 {
        font-size: 2.8rem;
    }

    .slide-content p {
        font-size: 1.3rem;
    }

    .process-timeline::after {
        left: 31px;
    }

    .timeline-container {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-container:nth-child(even) {
        left: 0;
    }

    .timeline-container:nth-child(odd) .timeline-icon,
    .timeline-container:nth-child(even) .timeline-icon {
        left: 15px;
    }

    .timeline-container:nth-child(odd) .timeline-content::after,
    .timeline-container:nth-child(even) .timeline-content::after {
        left: -15px;
        border-right: 15px solid var(--white);
        border-left: none;
    }

    .faq-categories {
        gap: 10px;
    }

    .faq-category-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    .options-grid {
        grid-template-columns: 1fr;
    }
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        margin-top: 20px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        margin: 10px 0;
    }
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        width: 100%;
        margin-top: 10px;
    }
    .mobile-menu-btn {
        display: block;
    }

    .slide-content h2 {
        font-size: 2.2rem;
    }

    .slide-content p {
        font-size: 1.1rem;
    }

    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .about-content {
        flex-direction: column;
    }

    .features {
        grid-template-columns: 1fr;
    }
    .feature {
        padding: 25px 20px;
    }

    .feature i {
        font-size: 2rem;
    }

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

    .faq-categories {
        flex-direction: column;
        align-items: center;
    }

    .faq-category-btn {
        width: 100%;
        max-width: 300px;
    }
    .option-image {
        height: 200px;
    }

    .option-info {
        padding: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .floating-contact {
        right: 10px;
        padding: 10px;
    }

    .contact-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    /* 移动端时间线优化 */
    .process-timeline::after {
        left: 20px;
    }

    .timeline-container {
        padding-left: 50px;
        padding-right: 15px;
    }

    .timeline-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        left: 0;
    }

    .timeline-content {
        padding: 15px 20px;
    }

    .timeline-content h3 {
        font-size: 1.2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .floating-contact {
        right: 10px;
        padding: 10px;
    }

    .contact-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    /* 移动端验证码布局调整 */
    .captcha-row {
        flex-direction: column;
    }

    .captcha-container {
        width: 100%;
    }

    #captcha-input {
        width: 100%;
        margin-bottom: 15px;
    }

    /* 移动端微信二维码调整 */
    .wechat-qr {
        left: -130px;
        width: 100px;
        height: 100px;
    }

    .intro-content {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .product-grid,
    .category-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .slide-content h2 {
        font-size: 1.8rem;
    }

    .slide-content p {
        font-size: 1rem;
    }

    .faq-question {
        padding: 15px;
    }

    .faq-item.active .faq-answer {
        padding: 15px;
    }
    /* 小屏幕时间线进一步优化 */
    .process-timeline::after {
        left: 15px;
    }

    .timeline-container {
        padding-left: 40px;
        padding-right: 10px;
    }

    .timeline-icon {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }

    .timeline-content {
        padding: 12px 15px;
    }

    .timeline-content h3 {
        font-size: 1.1rem;
    }
    /* 小屏幕微信二维码调整 */
    .wechat-qr {
        left: -110px;
        width: 90px;
        height: 90px;
    }
}

@media (max-width: 360px) {
    /* 超小屏幕时间线优化 */
    .process-timeline::after {
        left: 12px;
    }

    .timeline-container {
        padding-left: 35px;
        padding-right: 5px;
    }

    .timeline-icon {
        width: 25px;
        height: 25px;
        font-size: 0.9rem;
    }

    .timeline-content {
        padding: 10px 12px;
    }

    .timeline-content h3 {
        font-size: 1rem;
    }
}