/* ==================== 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-69c6b9 {
    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-bb172f {
    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-59989b {
    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-59989b:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 98, 0.5);
}

.btn-secondary-bc9c9d {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--text-white);
}

.btn-secondary-bc9c9d:hover {
    background: var(--text-white);
    color: var(--primary-color);
}

.btn-block-7f6bf8 {
    width: 100%;
}

/* ==================== 顶部导航 ==================== */
.header-ee252d {
    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-ee252d.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-c44b8b {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-1dddff {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-1dddff i {
    font-size: 32px;
}

.nav-links-40f597 {
    display: flex;
    gap: 8px;
}

.nav-links-40f597 a {
    padding: 10px 16px;
    color: var(--text-primary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-links-40f597 a:hover {
    color: var(--primary-color);
    background: rgba(201, 169, 98, 0.1);
}

.hamburger-63bb08 {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
}

/* ==================== 横幅区域 ==================== */
.hero-140d11 {
    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-140d11::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-cffb49 {
    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-5b4ead {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    max-width: 800px;
    padding: 0 20px;
}

.hero-title-5fc45b {
    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-2fae87 {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons-4a4313 {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 章节头部 ==================== */
.section-header-db39f9 {
    text-align: center;
    margin-bottom: 60px;
}

.section-title-859b87 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title-859b87::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-7aacdb {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 20px auto 0;
    line-height: 1.7;
}

/* ==================== 服务内容 ==================== */
.services-2d7e7c {
    padding: 120px 0;
    background: var(--bg-light);
}

.services-grid-f3568d {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card-bdaf99 {
    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-bdaf99:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-icon-8c5266 {
    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-bdaf99:hover .service-icon-8c5266 {
    transform: scale(1.1) rotate(5deg);
}

.service-icon-8c5266 i {
    font-size: 32px;
    color: var(--text-white);
}

.service-title-db5f78 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-content-3969c3 {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 服务优势 ==================== */
.advantages-68bd77 {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-color) 100%);
}

.advantages-grid-2bdce3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card-569e35 {
    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-569e35::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-569e35:hover::before {
    transform: scaleX(1);
}

.advantage-card-569e35:hover {
    box-shadow: var(--shadow-lg);
}

.advantage-number-b6fc5c {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.3;
    position: absolute;
    top: 20px;
    right: 20px;
}

.advantage-title-316c53 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.advantage-content-e0500c {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ==================== 产品案例 ==================== */
.products-91737f {
    padding: 120px 0;
    background: var(--secondary-color);
}

.products-91737f .section-title-859b87 {
    color: var(--text-white);
}

.products-91737f .section-subtitle-7aacdb {
    color: rgba(255, 255, 255, 0.7);
}

.products-grid-286d79 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card-deca29 {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-light);
    transition: var(--transition-normal);
}

.product-card-deca29:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-image-85c5c8 {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.product-image-85c5c8 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card-deca29:hover .product-image-85c5c8 img {
    transform: scale(1.1);
}

.product-overlay-885b2f {
    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-deca29:hover .product-overlay-885b2f {
    opacity: 1;
}

.product-overlay-885b2f i {
    font-size: 32px;
    color: var(--primary-color);
}

.product-info-136283 {
    padding: 24px;
    background: var(--bg-light);
}

.product-title-6a37ad {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.product-desc-3bfae2 {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 关于我们 ==================== */
.about-902238 {
    padding: 120px 0;
    background: var(--bg-light);
}

.about-wrapper-0cc3ce {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image-137f58 {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-137f58 img {
    width: 100%;
    height: auto;
}

.about-content-819e54 {
    padding: 20px;
}

.about-header-651353 {
    text-align: left;
    margin-bottom: 30px;
}

.about-header-651353 .section-title-859b87::after {
    left: 0;
    transform: none;
}

.about-intro-946fa7 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text-60f125 {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 40px;
}

.about-stats-753b80 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-item-940ec8 {
    text-align: center;
    padding: 24px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.stat-item-940ec8:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-number-3afdf6 {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label-e78d80 {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ==================== 新闻资讯 ==================== */
.news-69809a {
    padding: 120px 0;
    background: var(--bg-dark);
}

.news-grid-4e8037 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card-deee41 {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.news-card-deee41:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.news-image-ac46f4 {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-image-ac46f4 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.news-card-deee41:hover .news-image-ac46f4 img {
    transform: scale(1.1);
}

.news-date-6a21e5 {
    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-b62867 {
    display: block;
    font-size: 20px;
    font-weight: 700;
}

.date-month-63ccd4 {
    font-size: 12px;
    opacity: 0.9;
}

.news-content-1407bf {
    padding: 24px;
}

.news-title-629823 {
    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-63c942 {
    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-d05ed2 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-light);
}

.news-time-b25716 {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-readmore-f579fa {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.news-readmore-f579fa:hover {
    gap: 10px;
}

/* ==================== 常见问题 ==================== */
.faq-fde628 {
    padding: 120px 0;
    background: var(--bg-light);
}

.faq-list-f46cc5 {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item-61bc9e {
    margin-bottom: 16px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.faq-item-61bc9e:hover {
    border-color: var(--primary-color);
}

.faq-question-14f637 {
    display: flex;
    align-items: center;
    padding: 24px;
    background: var(--bg-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.faq-question-14f637:hover {
    background: rgba(201, 169, 98, 0.05);
}

.faq-icon-0e6196 {
    color: var(--primary-color);
    font-size: 20px;
    margin-right: 16px;
}

.faq-text-1c26bd {
    flex: 1;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}

.faq-toggle-adab18 {
    color: var(--primary-color);
    font-size: 16px;
    transition: var(--transition-fast);
}

.faq-item-61bc9e.active .faq-toggle-adab18 {
    transform: rotate(180deg);
}

.faq-answer-2b88a8 {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item-61bc9e.active .faq-answer-2b88a8 {
    max-height: 300px;
}

.faq-answer-2b88a8 p {
    padding: 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: var(--bg-light);
}

/* ==================== 客户评价 ==================== */
.reviews-02345c {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
}

.reviews-02345c .section-title-859b87 {
    color: var(--text-white);
}

.reviews-02345c .section-subtitle-7aacdb {
    color: rgba(255, 255, 255, 0.7);
}

.reviews-grid-bbe1d8 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card-d62596 {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
}

.review-card-d62596:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.review-header-1c996c {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
}

.reviewer-info-43f328 {
    display: flex;
    align-items: center;
    gap: 16px;
}

.reviewer-avatar-44985a {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.reviewer-details-1b003f {
    flex: 1;
}

.reviewer-name-8bcc5d {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.reviewer-company-3c075f {
    font-size: 14px;
    color: var(--text-secondary);
}

.review-rating-969bbd {
    color: var(--primary-color);
    font-size: 14px;
}

.review-content-3f01cf {
    margin-bottom: 20px;
}

.review-content-3f01cf p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.review-footer-011e36 {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    font-size: 13px;
    color: var(--text-light);
}

.review-date-aafe2c {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==================== 联系我们 ==================== */
.contact-3e2bf5 {
    padding: 120px 0;
    background: var(--bg-color);
}

.contact-wrapper-5abc2b {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-491389 {
    padding: 20px;
}

.contact-subtitle-abf992 {
    font-size: 18px;
    color: var(--text-secondary);
    margin-top: 16px;
}

.contact-details-df2950 {
    margin: 40px 0;
}

.contact-item-9417b0 {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}

.contact-icon-142a4d {
    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-142a4d i {
    font-size: 20px;
    color: var(--text-white);
}

.contact-text-0863c4 h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-text-0863c4 p {
    font-size: 15px;
    color: var(--text-secondary);
}

.social-links-01b16b {
    display: flex;
    gap: 16px;
    margin-top: 30px;
}

.social-link-63a7c4 {
    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-63a7c4:hover {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-form-wrapper-8560c0 {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-title-caabf7 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: center;
}

.form-row-60b1fb {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group-edad95 {
    margin-bottom: 20px;
}

.form-group-edad95 label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group-edad95 input,
.form-group-edad95 select,
.form-group-edad95 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-edad95 input:focus,
.form-group-edad95 select:focus,
.form-group-edad95 textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.form-group-edad95 textarea {
    resize: vertical;
    min-height: 120px;
}

.flink-section-3acc68 {
    background: white;
    color: #2d3748;
    padding: 30px 0;
}
.flink-header-8e046e{
    font-size: 20px;
    font-weight: 600;
    padding-bottom: 10px;
}
.flink-section-3acc68 li{
    list-style: none;
    display: inline;
    padding-right: 20px;
}
.flink-section-3acc68 a{
    color: #718096;
    text-decoration: none;
}

/* ==================== 页脚 ==================== */
.footer-09348e {
    background: var(--secondary-dark);
    color: var(--text-white);
    padding: 80px 0 30px;
}

.footer-content-198c72 {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand-04734e .logo-1dddff {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-desc-74b9be {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links-43d19a {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column-1900f7 h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--primary-color);
}

.footer-column-1900f7 ul li {
    margin-bottom: 12px;
}

.footer-column-1900f7 ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-column-1900f7 ul a:hover {
    color: var(--primary-color);
    padding-left: 8px;
}

.footer-bottom-1bef3b {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom-1bef3b p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 8px;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top-a844c9 {
    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-a844c9.visible-67d4fc {
    opacity: 1;
    visibility: visible;
}

.back-to-top-a844c9:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .services-grid-f3568d,
    .advantages-grid-2bdce3,
    .products-grid-286d79,
    .news-grid-4e8037 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-wrapper-0cc3ce,
    .contact-wrapper-5abc2b {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image-137f58 {
        order: -1;
    }
    
    .footer-content-198c72 {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links-40f597 {
        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-40f597.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links-40f597 a {
        padding: 16px;
        border-bottom: 1px solid var(--border-light);
    }
    
    .hamburger-63bb08 {
        display: block;
    }
    
    .hero-140d11 {
        min-height: 600px;
    }
    
    .hero-title-5fc45b {
        font-size: 36px;
    }
    
    .hero-subtitle-2fae87 {
        font-size: 16px;
    }
    
    .section-title-859b87 {
        font-size: 32px;
    }
    
    .services-grid-f3568d,
    .advantages-grid-2bdce3,
    .products-grid-286d79,
    .news-grid-4e8037,
    .reviews-grid-bbe1d8 {
        grid-template-columns: 1fr;
    }
    
    .about-stats-753b80 {
        grid-template-columns: 1fr;
    }
    
    .form-row-60b1fb {
        grid-template-columns: 1fr;
    }
    
    .footer-links-43d19a {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stat-item-940ec8 {
        padding: 16px;
    }
    
    .stat-number-3afdf6 {
        font-size: 28px;
    }
    
    .product-image-85c5c8 {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .container-69c6b9 {
        padding: 0 15px;
    }
    
    .hero-title-5fc45b {
        font-size: 28px;
    }
    
    .hero-buttons-4a4313 {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn-bb172f {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .section-title-859b87 {
        font-size: 26px;
    }
    
    .service-card-bdaf99,
    .advantage-card-569e35 {
        padding: 30px 20px;
    }
    
    .contact-form-wrapper-8560c0 {
        padding: 24px;
    }
    
    .review-card-d62596 {
        padding: 24px;
    }
}