/* ==================== 基础样式 ==================== */
:root {
    /* 主题颜色 - 高端金色系 */
    --primary-color: #C9A962;
    --primary-dark: #B8944D;
    --primary-light: #D4B978;
    
    /* 辅助颜色 - 深色系 */
    --secondary-color: #2C3E50;
    --secondary-dark: #1A252F;
    --secondary-light: #34495E;
    
    /* 强调色 - 深棕色 */
    --accent-color: #8B4513;
    --accent-dark: #6B3410;
    --accent-light: #A0522D;
    
    /* 背景色 */
    --bg-color: #F8F7F4;
    --bg-light: #FFFFFF;
    --bg-dark: #F0EDE6;
    
    /* 文字颜色 */
    --text-primary: #2C3E50;
    --text-secondary: #5D6D7E;
    --text-light: #8E99A4;
    --text-white: #FFFFFF;
    
    /* 边框颜色 */
    --border-color: #E0DCD3;
    --border-light: #EAE6DD;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.15);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

.container-4bbc3d {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==================== 按钮样式 ==================== */
.btn-678906 {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    gap: 8px;
}

.btn-primary-be2ee9 {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(201, 169, 98, 0.4);
}

.btn-primary-be2ee9:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 98, 0.5);
}

.btn-secondary-c9049b {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.btn-secondary-c9049b:hover {
    background: var(--text-white);
    color: var(--primary-color);
}

.btn-block-946b81 {
    width: 100%;
}

/* ==================== 顶部导航 ==================== */
.header-549682 {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.header-549682.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-6d9858 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-89510d {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-89510d i {
    font-size: 32px;
}

.nav-links-d239ec {
    display: flex;
    gap: 8px;
}

.nav-links-d239ec a {
    padding: 10px 16px;
    color: var(--text-primary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-links-d239ec a:hover {
    color: var(--primary-color);
    background: rgba(201, 169, 98, 0.1);
}

.hamburger-22d906 {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
}

/* ==================== 横幅区域 ==================== */
.hero-4b2ed0 {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    overflow: hidden;
}

.hero-4b2ed0::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('./imgs/banner.jpg') center/cover;
    animation: float 20s linear infinite;
    opacity: 0.2;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-200px) rotate(360deg); }
}

.hero-overlay-cd9687 {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.9), rgba(26, 37, 47, 0.95));
}

.hero-content-2b8ec0 {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    max-width: 800px;
    padding: 0 20px;
}

.hero-title-9ac80d {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 2px;
    text-shadow: 2px 4px 8px rgba(0,0,0,0.3);
}

.hero-subtitle-bc617d {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons-c0c892 {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 章节头部 ==================== */
.section-header-48282b {
    text-align: center;
    margin-bottom: 60px;
}

.section-title-521cd0 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title-521cd0::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    border-radius: 2px;
}

.section-subtitle-74c836 {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 20px auto 0;
    line-height: 1.7;
}

/* ==================== 服务内容 ==================== */
.services-916337 {
    padding: 120px 0;
    background: var(--bg-light);
}

.services-grid-d8072e {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card-3a3f59 {
    background: var(--bg-color);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-light);
}

.service-card-3a3f59:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon-5e110f {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.service-card-3a3f59:hover .service-icon-5e110f {
    transform: scale(1.1) rotate(5deg);
}

.service-icon-5e110f i {
    font-size: 32px;
    color: var(--text-white);
}

.service-title-b5260d {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-content-2d7ffc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 服务优势 ==================== */
.advantages-f831ba {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-color) 100%);
}

.advantages-grid-e5c3d1 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card-60b027 {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid var(--border-light);
}

.advantage-card-60b027::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.advantage-card-60b027:hover::before {
    transform: scaleX(1);
}

.advantage-card-60b027:hover {
    box-shadow: var(--shadow-lg);
}

.advantage-number-51ab2c {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.3;
    position: absolute;
    top: 20px;
    right: 20px;
}

.advantage-title-561b51 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.advantage-content-244214 {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ==================== 产品案例 ==================== */
.products-48687b {
    padding: 120px 0;
    background: var(--secondary-color);
}

.products-48687b .section-title-521cd0 {
    color: var(--text-white);
}

.products-48687b .section-subtitle-74c836 {
    color: rgba(255, 255, 255, 0.7);
}

.products-grid-0139ba {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card-6a6524 {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-light);
    transition: var(--transition-normal);
}

.product-card-6a6524:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-image-e3a53d {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.product-image-e3a53d img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card-6a6524:hover .product-image-e3a53d img {
    transform: scale(1.1);
}

.product-overlay-476e7f {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 62, 80, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.product-card-6a6524:hover .product-overlay-476e7f {
    opacity: 1;
}

.product-overlay-476e7f i {
    font-size: 32px;
    color: var(--primary-color);
}

.product-info-d36a8b {
    padding: 24px;
    background: var(--bg-light);
}

.product-title-3d0362 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.product-desc-4e59f8 {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 关于我们 ==================== */
.about-8aa7c7 {
    padding: 120px 0;
    background: var(--bg-light);
}

.about-wrapper-814e10 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-924cb4 {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-924cb4 img {
    width: 100%;
    height: auto;
}

.about-content-5cfea4 {
    padding: 20px;
}

.about-header-466713 {
    text-align: left;
    margin-bottom: 30px;
}

.about-header-466713 .section-title-521cd0::after {
    left: 0;
    transform: none;
}

.about-intro-3b399e {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text-8afafe {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 40px;
}

.about-stats-42e92c {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-item-9c8145 {
    text-align: center;
    padding: 24px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.stat-item-9c8145:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-number-f759e2 {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label-91307c {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 新闻资讯 ==================== */
.news-a97d1b {
    padding: 120px 0;
    background: var(--bg-dark);
}

.news-grid-1a4ea4 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card-6c805e {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.news-card-6c805e:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.news-image-e3f9ad {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-image-e3f9ad img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.news-card-6c805e:hover .news-image-e3f9ad img {
    transform: scale(1.1);
}

.news-date-ddd64d {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--primary-color);
    color: var(--text-white);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    text-align: center;
}

.date-day-965078 {
    display: block;
    font-size: 20px;
    font-weight: 700;
}

.date-month-41b719 {
    font-size: 12px;
    opacity: 0.9;
}

.news-content-747f86 {
    padding: 24px;
}

.news-title-74d60e {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-summary-025973 {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta-fe0237 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-light);
}

.news-time-730ca3 {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-readmore-d70dc1 {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.news-readmore-d70dc1:hover {
    gap: 10px;
}

/* ==================== 常见问题 ==================== */
.faq-5092dd {
    padding: 120px 0;
    background: var(--bg-light);
}

.faq-list-733680 {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item-9a0509 {
    margin-bottom: 16px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.faq-item-9a0509:hover {
    border-color: var(--primary-color);
}

.faq-question-fc0f5a {
    display: flex;
    align-items: center;
    padding: 24px;
    background: var(--bg-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.faq-question-fc0f5a:hover {
    background: rgba(201, 169, 98, 0.05);
}

.faq-icon-1f26ec {
    color: var(--primary-color);
    font-size: 20px;
    margin-right: 16px;
}

.faq-text-2f2675 {
    flex: 1;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.faq-toggle-973665 {
    color: var(--primary-color);
    font-size: 16px;
    transition: var(--transition-fast);
}

.faq-item-9a0509.active .faq-toggle-973665 {
    transform: rotate(180deg);
}

.faq-answer-9874e7 {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item-9a0509.active .faq-answer-9874e7 {
    max-height: 300px;
}

.faq-answer-9874e7 p {
    padding: 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: var(--bg-light);
}

/* ==================== 客户评价 ==================== */
.reviews-b9478d {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
}

.reviews-b9478d .section-title-521cd0 {
    color: var(--text-white);
}

.reviews-b9478d .section-subtitle-74c836 {
    color: rgba(255, 255, 255, 0.7);
}

.reviews-grid-4c77f5 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card-609bee {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
}

.review-card-609bee:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.review-header-a98bf8 {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
}

.reviewer-info-106e23 {
    display: flex;
    align-items: center;
    gap: 16px;
}

.reviewer-avatar-9ae784 {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.reviewer-details-55084c {
    flex: 1;
}

.reviewer-name-77d55c {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.reviewer-company-40c287 {
    font-size: 14px;
    color: var(--text-secondary);
}

.review-rating-c86574 {
    color: var(--primary-color);
    font-size: 14px;
}

.review-content-27fefc {
    margin-bottom: 20px;
}

.review-content-27fefc p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.review-footer-973726 {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 13px;
    color: var(--text-light);
}

.review-date-3ecb0e {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==================== 联系我们 ==================== */
.contact-e58140 {
    padding: 120px 0;
    background: var(--bg-color);
}

.contact-wrapper-f90f01 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-4965fa {
    padding: 20px;
}

.contact-subtitle-787f76 {
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: 16px;
}

.contact-details-90c2f9 {
    margin: 40px 0;
}

.contact-item-042a7f {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}

.contact-icon-a642c2 {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon-a642c2 i {
    font-size: 20px;
    color: var(--text-white);
}

.contact-text-6de3d2 h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-text-6de3d2 p {
    font-size: 15px;
    color: var(--text-secondary);
}

.social-links-5959f0 {
    display: flex;
    gap: 16px;
    margin-top: 30px;
}

.social-link-2baf0f {
    width: 48px;
    height: 48px;
    background: var(--bg-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.social-link-2baf0f:hover {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-form-wrapper-f9a329 {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-title-4d7162 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: center;
}

.form-row-d93150 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group-28979c {
    margin-bottom: 20px;
}

.form-group-28979c label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group-28979c input,
.form-group-28979c select,
.form-group-28979c textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-color);
    color: var(--text-primary);
    transition: var(--transition-fast);
    font-family: inherit;
}

.form-group-28979c input:focus,
.form-group-28979c select:focus,
.form-group-28979c textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-group-28979c textarea {
    resize: vertical;
    min-height: 120px;
}

.flink-section-5f16b6 {
    background: white;
    color: #2d3748;
    padding: 30px 0;
}
.flink-header-9bc6cc{
    font-size: 20px;
    font-weight: 600;
    padding-bottom: 10px;
}
.flink-section-5f16b6 li{
    list-style: none;
    display: inline;
    padding-right: 20px;
}
.flink-section-5f16b6 a{
    color: #718096;
    text-decoration: none;
}

/* ==================== 页脚 ==================== */
.footer-b12e10 {
    background: var(--secondary-dark);
    color: var(--text-white);
    padding: 80px 0 30px;
}

.footer-content-70da65 {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand-3c0dfc .logo-89510d {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-desc-dec574 {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links-86a953 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column-7b779c h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--primary-color);
}

.footer-column-7b779c ul li {
    margin-bottom: 12px;
}

.footer-column-7b779c ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-column-7b779c ul a:hover {
    color: var(--primary-color);
    padding-left: 8px;
}

.footer-bottom-d68e5b {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom-d68e5b p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 8px;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top-bd0c74 {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 18px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.back-to-top-bd0c74.visible-58aa75 {
    opacity: 1;
    visibility: visible;
}

.back-to-top-bd0c74:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .services-grid-d8072e,
    .advantages-grid-e5c3d1,
    .products-grid-0139ba,
    .news-grid-1a4ea4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-wrapper-814e10,
    .contact-wrapper-f90f01 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image-924cb4 {
        order: -1;
    }
    
    .footer-content-70da65 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links-d239ec {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--bg-light);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }
    
    .nav-links-d239ec.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links-d239ec a {
        padding: 16px;
        border-bottom: 1px solid var(--border-light);
    }
    
    .hamburger-22d906 {
        display: block;
    }
    
    .hero-4b2ed0 {
        min-height: 600px;
    }
    
    .hero-title-9ac80d {
        font-size: 36px;
    }
    
    .hero-subtitle-bc617d {
        font-size: 16px;
    }
    
    .section-title-521cd0 {
        font-size: 32px;
    }
    
    .services-grid-d8072e,
    .advantages-grid-e5c3d1,
    .products-grid-0139ba,
    .news-grid-1a4ea4,
    .reviews-grid-4c77f5 {
        grid-template-columns: 1fr;
    }
    
    .about-stats-42e92c {
        grid-template-columns: 1fr;
    }
    
    .form-row-d93150 {
        grid-template-columns: 1fr;
    }
    
    .footer-links-86a953 {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stat-item-9c8145 {
        padding: 16px;
    }
    
    .stat-number-f759e2 {
        font-size: 28px;
    }
    
    .product-image-e3a53d {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .container-4bbc3d {
        padding: 0 15px;
    }
    
    .hero-title-9ac80d {
        font-size: 28px;
    }
    
    .hero-buttons-c0c892 {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn-678906 {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .section-title-521cd0 {
        font-size: 26px;
    }
    
    .service-card-3a3f59,
    .advantage-card-60b027 {
        padding: 30px 20px;
    }
    
    .contact-form-wrapper-f9a329 {
        padding: 24px;
    }
    
    .review-card-609bee {
        padding: 24px;
    }
}