/* ========================================
   义乌市聚达包装材料有限公司 - 网站样式
   YiWu JuDa Packaging Material Co.Ltd
   
   标准色盘：
   - 核心主色: 聚达深蓝 #003366 (CMYK 100,80,0,20)
   - 辅助色: 哑光香槟金 #C0A060 (CMYK 20,30,70,0)
   - 背景/中性色: 工业灰 #F2F2F2 (浅灰) / #666666 (正文)
   
   标准字体：
   - 英文: Montserrat
   - 中文: 思源黑体 (Source Han Sans)
   ======================================== */

/* 导入字体 */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

/* CSS变量定义 */
:root {
    /* 核心主色 - 聚达深蓝 */
    --primary-color: #003366;
    --primary-dark: #002244;
    --primary-light: #004488;
    
    /* 辅助色 - 哑光香槟金 */
    --accent-color: #C0A060;
    --accent-light: #D4B880;
    --accent-dark: #A08040;
    
    /* 背景/中性色 - 工业灰 */
    --text-dark: #333333;
    --text-medium: #666666;
    --text-light: #999999;
    --bg-light: #F2F2F2;
    --bg-white: #FFFFFF;
    --border-color: #E0E0E0;
    
    /* 其他 */
    --shadow: 0 2px 15px rgba(0,51,102,0.1);
    --shadow-hover: 0 5px 25px rgba(0,51,102,0.15);
    --shadow-gold: 0 4px 15px rgba(192,160,96,0.3);
    --transition: all 0.3s ease;
    --container-max: 1320px;
    --border-radius: 8px;
    
    /* 字体 */
    --font-en: 'Montserrat', sans-serif;
    --font-zh: 'Source Han Sans CN', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-zh);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

/* 英文内容使用 Montserrat */
.company-name,
.company-slogan,
.stat-number,
.btn,
.nav-menu a,
.hero h1,
.section-header h2,
.section-header h3,
.about-content h2,
.about-content h4,
.product-content h3,
.process-card h3,
.market-card h4,
.service-step h4,
.contact-info h3,
.contact-form h3,
.footer-column h4,
.footer-about .company-name,
.footer-about .company-slogan {
    font-family: var(--font-en);
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   顶部通知栏
   ======================================== */
.top-bar {
    background: var(--primary-color);
    color: white;
    padding: 10px 0;
    font-size: 14px;
    text-align: center;
    border-bottom: 2px solid var(--accent-color);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.top-bar a {
    color: white;
    opacity: 0.9;
}

.top-bar a:hover {
    opacity: 1;
    text-decoration: underline;
}

.language-switcher {
    display: flex;
    gap: 10px;
}

.language-switcher a {
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 13px;
    border: 1px solid rgba(255,255,255,0.3);
}

.language-switcher a:hover,
.language-switcher a.active {
    background: var(--accent-color);
    color: white;
    text-decoration: none;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 18px;
    font-family: var(--font-en);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text .company-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
    letter-spacing: 0.5px;
}

.logo-text .company-slogan {
    font-size: 11px;
    color: var(--accent-color);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 5px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

/* Language Switch */
.lang-switch {
    display: flex;
    align-items: center;
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid rgba(255,255,255,0.3);
}

.lang-switch a {
    font-size: 18px;
    margin-right: 8px;
    opacity: 0.7;
    transition: var(--transition);
}

.lang-switch a:hover {
    opacity: 1;
    transform: scale(1.1);
}

.lang-switch-mobile {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.lang-switch-mobile a {
    display: block;
    padding: 10px 0;
    font-size: 16px;
}

.nav-cta {
    background: var(--primary-color);
    color: white !important;
    padding: 12px 25px !important;
    border-radius: 6px;
    font-weight: 600 !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

/* ========================================
   英雄区（Hero Section）
   ======================================== */
.hero {
    position: relative;
    min-height: auto;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, rgba(0,51,102,0.95) 0%, rgba(0,51,102,0.9) 50%, rgba(0,51,102,0.8) 100%);
    overflow: hidden;
    padding: 120px 0 0 0;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/hero-bg.jpg') center/cover;
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,51,102,0.92) 0%, rgba(0,51,102,0.85) 50%, rgba(0,51,102,0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    max-width: 100%;
    padding: 60px 0;
}

.hero-badge {
    display: inline-block;
    background: transparent;
    color: var(--accent-color);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: 1px solid var(--accent-color);
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 25px;
}

.hero h1 span {
    color: var(--accent-color);
    font-weight: 700;
}

.hero p {
    font-size: 20px;
    opacity: 0.95;
    margin-bottom: 35px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 35px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* 英雄区统计数据 */
.hero-stats {
    position: relative;
    width: 100%;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255,255,255,0.2);
    margin-top: auto;
}

.hero-stats-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 40px 0;
}

.stat-item {
    text-align: center;
    color: white;
    padding: 20px;
    border-right: 1px solid rgba(255,255,255,0.2);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-number span {
    font-size: 24px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* ========================================
   区块通用样式
   ======================================== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent-color);
}

.section-header p {
    font-size: 16px;
    color: var(--text-medium);
    margin-top: 25px;
}

.section-header.center {
    text-align: center;
}

/* ========================================
   关于我们区块
   ======================================== */
.about-section {
    background: var(--bg-white);
}

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

.about-image {
    position: relative;
}

.about-image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* 轮播样式 */
.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.carousel-container {
    display: flex;
    transition: transform 0.5s ease;
}

.carousel-slide {
    min-width: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: none;
}

.carousel-slide.active {
    opacity: 1;
    display: block;
}

.carousel-slide img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.carousel-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent-color);
}

.dot:hover {
    background: var(--accent-light);
}

.carousel-prev,
.carousel-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,51,102,0.7);
    color: var(--accent-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.carousel-prev:hover,
.carousel-next:hover {
    background: var(--primary-color);
    color: white;
}

.carousel-prev {
    left: 15px;
}

.carousel-next {
    right: 15px;
}

.about-image .experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary-color);
    color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 3px solid var(--accent-color);
}

.experience-badge .years {
    font-size: 48px;
    font-weight: 700;
    display: block;
    line-height: 1;
}

.experience-badge .text {
    font-size: 14px;
    opacity: 0.9;
}

.about-content h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.about-content > p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.about-feature i {
    width: 50px;
    height: 50px;
    background: rgba(0,51,102,0.08);
    color: var(--accent-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.about-feature h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.about-feature p {
    font-size: 14px;
    color: var(--text-light);
}

.values-section {
    background: var(--bg-white);
    padding: 25px;
    border-radius: var(--border-radius);
    margin-top: 30px;
    border: 1px solid var(--border-color);
}

.values-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
}

.values-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-light);
    padding: 12px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.value-item:hover {
    background: var(--primary-color);
    color: white;
}

.value-item i {
    color: var(--accent-color);
}

.value-item:hover i {
    color: var(--accent-color);
}

/* ========================================
   产品区块
   ======================================== */
.products-section {
    background: var(--bg-light);
}

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

.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.product-image {
    height: 220px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

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

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

.product-content {
    padding: 25px;
}

.product-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.product-content p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-color);
    font-weight: 600;
    font-size: 14px;
}

.product-link:hover {
    gap: 12px;
    color: var(--primary-color);
}

/* ========================================
   工艺区块
   ======================================== */
.process-section {
    background: var(--bg-white);
}

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

.process-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.process-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-color);
    transform: scaleX(0);
    transition: var(--transition);
}

.process-card:hover::before {
    transform: scaleX(1);
}

.process-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.process-icon {
    width: 80px;
    height: 80px;
    background: rgba(0,51,102,0.06);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 32px;
    color: var(--accent-color);
}

.process-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.process-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.7;
}

/* ========================================
   市场区块
   ======================================== */
.markets-section {
    background: var(--primary-color);
    color: white;
    position: relative;
    overflow: hidden;
    border-top: 3px solid var(--accent-color);
    border-bottom: 3px solid var(--accent-color);
}

.markets-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/world-map.png') center/contain no-repeat;
    opacity: 0.1;
}

.markets-section .section-header h2,
.markets-section .section-header p {
    color: white;
}

.markets-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
    z-index: 1;
}

.market-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius);
    padding: 30px 20px;
    text-align: center;
    transition: var(--transition);
}

.market-card:hover {
    background: rgba(192,160,96,0.15);
    transform: translateY(-5px);
    box-shadow: var(--shadow-gold);
}

.market-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.market-card h4 {
    font-size: 18px;
    font-weight: 600;
}

/* ========================================
   服务流程区块
   ======================================== */
.services-section {
    background: var(--bg-white);
}

.services-timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 40px 0;
}

.services-timeline::before {
    content: '';
    position: absolute;
    top: 80px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--accent-color);
}

.service-step {
    text-align: center;
    width: 18%;
    position: relative;
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    margin: 0 auto 25px;
    position: relative;
    z-index: 1;
    border: 3px solid var(--accent-color);
    box-shadow: var(--shadow);
}

.service-step h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.service-step p {
    font-size: 14px;
    color: var(--text-light);
}

/* ========================================
   联系区块 - 全新设计
   ======================================== */
.contact-section {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-light) 100%);
}

.contact-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

/* 联系卡片网格 */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.contact-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-color);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-card-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 24px;
    color: var(--accent-color);
    transition: var(--transition);
}

.contact-card:hover .contact-card-icon {
    background: var(--accent-color);
    color: var(--primary-color);
}

.contact-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.contact-card p {
    font-size: 14px;
    color: var(--text-medium);
    line-height: 1.6;
}

.contact-link {
    display: inline-block;
    font-size: 14px;
    color: var(--accent-color);
    font-weight: 600;
    padding: 8px 16px;
    border: 1px solid var(--accent-color);
    border-radius: 20px;
    margin-top: 5px;
    transition: var(--transition);
}

.contact-link:hover {
    background: var(--accent-color);
    color: white;
}

/* WhatsApp 区域 */
.contact-whatsapp {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border-radius: var(--border-radius);
    padding: 40px;
    position: relative;
    overflow: hidden;
    margin-bottom: 30px;
}

.contact-whatsapp::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.whatsapp-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.whatsapp-info {
    color: white;
}

.whatsapp-info i {
    font-size: 48px;
    color: white;
    margin-bottom: 15px;
}

.whatsapp-info h4 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 10px;
}

.whatsapp-info p {
    font-size: 15px;
    opacity: 0.95;
    line-height: 1.8;
    margin-bottom: 20px;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    color: #25D366;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.whatsapp-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.whatsapp-btn i {
    font-size: 20px;
    margin: 0;
}

.whatsapp-qrcode {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.whatsapp-qrcode a {
    display: block;
    text-decoration: none;
}

.whatsapp-qrcode img {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    margin-bottom: 10px;
    transition: var(--transition);
}

.whatsapp-qrcode a:hover img {
    transform: scale(1.05);
}

.whatsapp-qrcode span {
    display: block;
    font-size: 13px;
    color: var(--text-medium);
}

/* 微信区域 */
.contact-wechat {
    background: var(--primary-color);
    border-radius: var(--border-radius);
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.contact-wechat::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(192,160,96,0.1);
    border-radius: 50%;
}

.wechat-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.wechat-info {
    color: white;
}

.wechat-info i {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.wechat-info h4 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 10px;
}

.wechat-info p {
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.8;
}

.wechat-qrcode {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.wechat-qrcode img {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.wechat-qrcode span {
    display: block;
    font-size: 13px;
    color: var(--text-medium);
}

/* 响应式 */
@media (max-width: 992px) {
    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .whatsapp-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    
    .wechat-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .contact-whatsapp {
        padding: 30px 20px;
    }
    
    .contact-wechat {
        padding: 30px 20px;
    }
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 80px 0 0;
    border-top: 3px solid var(--accent-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-about {
    padding-right: 40px;
}

.footer-about .logo {
    margin-bottom: 20px;
}

.footer-about .logo-icon {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.footer-about .company-name {
    color: white;
}

.footer-about .company-slogan {
    color: rgba(255,255,255,0.6);
}

.footer-about p {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-column h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 25px;
    color: white;
}

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

.footer-column ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: white;
    padding-left: 5px;
}

.footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.footer-contact i {
    color: var(--accent-color);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 25px 0;
    text-align: center;
}

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

/* ========================================
   浮动按钮
   ======================================== */
.floating-buttons {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

[dir="rtl"] .floating-buttons {
    right: auto;
    left: 30px;
}

.floating-btn {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
    cursor: pointer;
}

.floating-btn:hover {
    transform: scale(1.1);
}

.floating-btn.whatsapp {
    background: #25D366;
}

.floating-btn.email {
    background: var(--accent-color);
}

.floating-btn.top {
    background: var(--text-medium);
    opacity: 0;
    visibility: hidden;
}

.floating-btn.top.visible {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .markets-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero h1 {
        font-size: 42px;
    }
    
    .hero-stats-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-item:nth-child(2) {
        border-right: none;
    }
    
    .stat-item:nth-child(1),
    .stat-item:nth-child(2) {
        border-bottom: 1px solid rgba(255,255,255,0.2);
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .markets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-timeline {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .services-timeline::before {
        display: none;
    }
    
    .service-step {
        width: 45%;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .hero {
        min-height: 600px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-stats-content {
        grid-template-columns: 1fr 1fr;
        padding: 20px 0;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 13px;
    }
    
    .about-content h2 {
        font-size: 28px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .products-grid,
    .process-grid,
    .markets-grid {
        grid-template-columns: 1fr;
    }
    
    .service-step {
        width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .top-bar-content {
        flex-direction: column;
        text-align: center;
    }
    
    .floating-buttons {
        bottom: 20px;
        right: 20px;
    }
    
    [dir="rtl"] .floating-buttons {
        left: 20px;
        right: auto;
    }
}

/* ========================================
   移动端菜单
   ======================================== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background: white;
    z-index: 1001;
    padding: 80px 30px 30px;
    transition: var(--transition);
    box-shadow: -5px 0 30px rgba(0,0,0,0.1);
}

[dir="rtl"] .mobile-menu {
    right: auto;
    left: -100%;
}

.mobile-menu.active {
    right: 0;
}

[dir="rtl"] .mobile-menu.active {
    left: 0;
    right: auto;
}

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 30px;
    cursor: pointer;
    color: var(--primary-color);
}

[dir="rtl"] .mobile-menu-close {
    right: auto;
    left: 20px;
}

.mobile-menu ul li {
    margin-bottom: 20px;
}

.mobile-menu ul li a {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu ul li a:hover {
    color: var(--accent-color);
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}