/* ==================== 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-2a8f38 {
    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-b8c4de {
    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-344630 {
    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-344630:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 98, 0.5);
}

.btn-secondary-4a8ed6 {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.btn-secondary-4a8ed6:hover {
    background: var(--text-white);
    color: var(--primary-color);
}

.btn-block-5b61bc {
    width: 100%;
}

/* ==================== 顶部导航 ==================== */
.header-0193c3 {
    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-0193c3.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-c7a4d7 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-7f8798 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-7f8798 i {
    font-size: 32px;
}

.nav-links-1a4669 {
    display: flex;
    gap: 8px;
}

.nav-links-1a4669 a {
    padding: 10px 16px;
    color: var(--text-primary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-links-1a4669 a:hover {
    color: var(--primary-color);
    background: rgba(201, 169, 98, 0.1);
}

.hamburger-f97c76 {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
}

/* ==================== 横幅区域 ==================== */
.hero-7b7fc3 {
    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-7b7fc3::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-39f265 {
    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-77169b {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    max-width: 800px;
    padding: 0 20px;
}

.hero-title-29efd9 {
    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-96a81c {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons-13f711 {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 章节头部 ==================== */
.section-header-417806 {
    text-align: center;
    margin-bottom: 60px;
}

.section-title-e60a16 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title-e60a16::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-389be1 {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 20px auto 0;
    line-height: 1.7;
}

/* ==================== 服务内容 ==================== */
.services-61c8d9 {
    padding: 120px 0;
    background: var(--bg-light);
}

.services-grid-36081d {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card-650510 {
    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-650510:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon-f486bd {
    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-650510:hover .service-icon-f486bd {
    transform: scale(1.1) rotate(5deg);
}

.service-icon-f486bd i {
    font-size: 32px;
    color: var(--text-white);
}

.service-title-633574 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-content-59c834 {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 服务优势 ==================== */
.advantages-e33a11 {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-color) 100%);
}

.advantages-grid-37afc1 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card-4e8dec {
    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-4e8dec::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-4e8dec:hover::before {
    transform: scaleX(1);
}

.advantage-card-4e8dec:hover {
    box-shadow: var(--shadow-lg);
}

.advantage-number-4274a3 {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.3;
    position: absolute;
    top: 20px;
    right: 20px;
}

.advantage-title-13c107 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.advantage-content-7201cb {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ==================== 产品案例 ==================== */
.products-77d978 {
    padding: 120px 0;
    background: var(--secondary-color);
}

.products-77d978 .section-title-e60a16 {
    color: var(--text-white);
}

.products-77d978 .section-subtitle-389be1 {
    color: rgba(255, 255, 255, 0.7);
}

.products-grid-530b87 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card-10946b {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-light);
    transition: var(--transition-normal);
}

.product-card-10946b:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-image-0dacab {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.product-image-0dacab img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card-10946b:hover .product-image-0dacab img {
    transform: scale(1.1);
}

.product-overlay-d84127 {
    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-10946b:hover .product-overlay-d84127 {
    opacity: 1;
}

.product-overlay-d84127 i {
    font-size: 32px;
    color: var(--primary-color);
}

.product-info-c379a6 {
    padding: 24px;
    background: var(--bg-light);
}

.product-title-0d9c2d {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.product-desc-13353e {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 关于我们 ==================== */
.about-a4cf6f {
    padding: 120px 0;
    background: var(--bg-light);
}

.about-wrapper-3a7b4a {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-3363e8 {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-3363e8 img {
    width: 100%;
    height: auto;
}

.about-content-a98fab {
    padding: 20px;
}

.about-header-59dea8 {
    text-align: left;
    margin-bottom: 30px;
}

.about-header-59dea8 .section-title-e60a16::after {
    left: 0;
    transform: none;
}

.about-intro-2dd1d1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text-e2bcfe {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 40px;
}

.about-stats-d83387 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-item-4ead19 {
    text-align: center;
    padding: 24px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.stat-item-4ead19:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-number-7cadcd {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label-2e291c {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 新闻资讯 ==================== */
.news-90a045 {
    padding: 120px 0;
    background: var(--bg-dark);
}

.news-grid-04197d {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card-545163 {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.news-card-545163:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.news-image-9795f3 {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-image-9795f3 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.news-card-545163:hover .news-image-9795f3 img {
    transform: scale(1.1);
}

.news-date-12fe07 {
    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-e4cbb3 {
    display: block;
    font-size: 20px;
    font-weight: 700;
}

.date-month-4de830 {
    font-size: 12px;
    opacity: 0.9;
}

.news-content-7e1bca {
    padding: 24px;
}

.news-title-d983a6 {
    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-f3b662 {
    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-72131d {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-light);
}

.news-time-12f5ae {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-readmore-f1407b {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.news-readmore-f1407b:hover {
    gap: 10px;
}

/* ==================== 常见问题 ==================== */
.faq-54c9bc {
    padding: 120px 0;
    background: var(--bg-light);
}

.faq-list-97d088 {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item-6a543f {
    margin-bottom: 16px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.faq-item-6a543f:hover {
    border-color: var(--primary-color);
}

.faq-question-1a5afc {
    display: flex;
    align-items: center;
    padding: 24px;
    background: var(--bg-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.faq-question-1a5afc:hover {
    background: rgba(201, 169, 98, 0.05);
}

.faq-icon-53b831 {
    color: var(--primary-color);
    font-size: 20px;
    margin-right: 16px;
}

.faq-text-63ce42 {
    flex: 1;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.faq-toggle-6521c2 {
    color: var(--primary-color);
    font-size: 16px;
    transition: var(--transition-fast);
}

.faq-item-6a543f.active .faq-toggle-6521c2 {
    transform: rotate(180deg);
}

.faq-answer-529dda {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item-6a543f.active .faq-answer-529dda {
    max-height: 300px;
}

.faq-answer-529dda p {
    padding: 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: var(--bg-light);
}

/* ==================== 客户评价 ==================== */
.reviews-263d53 {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
}

.reviews-263d53 .section-title-e60a16 {
    color: var(--text-white);
}

.reviews-263d53 .section-subtitle-389be1 {
    color: rgba(255, 255, 255, 0.7);
}

.reviews-grid-5b9849 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card-c23f5d {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
}

.review-card-c23f5d:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.review-header-930c8a {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
}

.reviewer-info-885925 {
    display: flex;
    align-items: center;
    gap: 16px;
}

.reviewer-avatar-eb86ef {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.reviewer-details-46c176 {
    flex: 1;
}

.reviewer-name-c16dab {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.reviewer-company-d3c988 {
    font-size: 14px;
    color: var(--text-secondary);
}

.review-rating-e9777e {
    color: var(--primary-color);
    font-size: 14px;
}

.review-content-bfcf80 {
    margin-bottom: 20px;
}

.review-content-bfcf80 p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.review-footer-0b31ef {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 13px;
    color: var(--text-light);
}

.review-date-ad1db0 {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==================== 联系我们 ==================== */
.contact-e4e08b {
    padding: 120px 0;
    background: var(--bg-color);
}

.contact-wrapper-499af2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-299b5c {
    padding: 20px;
}

.contact-subtitle-d198cc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: 16px;
}

.contact-details-94a0d2 {
    margin: 40px 0;
}

.contact-item-6ccc7d {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}

.contact-icon-3314a3 {
    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-3314a3 i {
    font-size: 20px;
    color: var(--text-white);
}

.contact-text-641ff8 h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-text-641ff8 p {
    font-size: 15px;
    color: var(--text-secondary);
}

.social-links-770a6e {
    display: flex;
    gap: 16px;
    margin-top: 30px;
}

.social-link-2e6ac0 {
    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-2e6ac0:hover {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-form-wrapper-d3916f {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-title-d39265 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: center;
}

.form-row-3907c6 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group-158498 {
    margin-bottom: 20px;
}

.form-group-158498 label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group-158498 input,
.form-group-158498 select,
.form-group-158498 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-158498 input:focus,
.form-group-158498 select:focus,
.form-group-158498 textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-group-158498 textarea {
    resize: vertical;
    min-height: 120px;
}

.flink-section-172592 {
    background: white;
    color: #2d3748;
    padding: 30px 0;
}
.flink-header-14d990{
    font-size: 20px;
    font-weight: 600;
    padding-bottom: 10px;
}
.flink-section-172592 li{
    list-style: none;
    display: inline;
    padding-right: 20px;
}
.flink-section-172592 a{
    color: #718096;
    text-decoration: none;
}

/* ==================== 页脚 ==================== */
.footer-544174 {
    background: var(--secondary-dark);
    color: var(--text-white);
    padding: 80px 0 30px;
}

.footer-content-b61129 {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand-d5c12a .logo-7f8798 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-desc-45dc7c {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links-541cb8 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column-265666 h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--primary-color);
}

.footer-column-265666 ul li {
    margin-bottom: 12px;
}

.footer-column-265666 ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-column-265666 ul a:hover {
    color: var(--primary-color);
    padding-left: 8px;
}

.footer-bottom-f17c9a {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom-f17c9a p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 8px;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top-5186d2 {
    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-5186d2.visible-fec7bc {
    opacity: 1;
    visibility: visible;
}

.back-to-top-5186d2:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .services-grid-36081d,
    .advantages-grid-37afc1,
    .products-grid-530b87,
    .news-grid-04197d {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-wrapper-3a7b4a,
    .contact-wrapper-499af2 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image-3363e8 {
        order: -1;
    }
    
    .footer-content-b61129 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links-1a4669 {
        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-1a4669.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links-1a4669 a {
        padding: 16px;
        border-bottom: 1px solid var(--border-light);
    }
    
    .hamburger-f97c76 {
        display: block;
    }
    
    .hero-7b7fc3 {
        min-height: 600px;
    }
    
    .hero-title-29efd9 {
        font-size: 36px;
    }
    
    .hero-subtitle-96a81c {
        font-size: 16px;
    }
    
    .section-title-e60a16 {
        font-size: 32px;
    }
    
    .services-grid-36081d,
    .advantages-grid-37afc1,
    .products-grid-530b87,
    .news-grid-04197d,
    .reviews-grid-5b9849 {
        grid-template-columns: 1fr;
    }
    
    .about-stats-d83387 {
        grid-template-columns: 1fr;
    }
    
    .form-row-3907c6 {
        grid-template-columns: 1fr;
    }
    
    .footer-links-541cb8 {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stat-item-4ead19 {
        padding: 16px;
    }
    
    .stat-number-7cadcd {
        font-size: 28px;
    }
    
    .product-image-0dacab {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .container-2a8f38 {
        padding: 0 15px;
    }
    
    .hero-title-29efd9 {
        font-size: 28px;
    }
    
    .hero-buttons-13f711 {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn-b8c4de {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .section-title-e60a16 {
        font-size: 26px;
    }
    
    .service-card-650510,
    .advantage-card-4e8dec {
        padding: 30px 20px;
    }
    
    .contact-form-wrapper-d3916f {
        padding: 24px;
    }
    
    .review-card-c23f5d {
        padding: 24px;
    }
}