/* ========================================
   香烟批发官网红色主题样式文件
   主色调：红色系 (#DC143C, #B22222, #FF4500)
   设计风格：强势商务，实力雄厚
   ======================================== */

/* 基础重置和全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 红色系配色方案 */
    --primary-red: #DC143C;       /* 猩红色 - 主色调 */
    --secondary-red: #B22222;     /* 砖红色 - 辅助色 */
    --accent-orange: #FF4500;     /* 橙红色 - 强调色 */
    --dark-text: #1A1A1A;         /* 深炭黑 - 主要文字 */
    --medium-gray: #666666;       /* 中度灰 - 次要文字 */
    --light-bg: #F5F5F5;          /* 浅灰 - 区块分隔背景 */
    --white: #FFFFFF;             /* 纯白 - 主要背景 */
    --border-color: #DDDDDD;      /* 边框颜色 */
    
    /* 渐变色彩 */
    --red-gradient: linear-gradient(135deg, #DC143C 0%, #B22222 100%);
    --red-gradient-hover: linear-gradient(135deg, #B22222 0%, #8B0000 100%);
    --red-gradient-light: linear-gradient(135deg, rgba(220, 20, 60, 0.1) 0%, rgba(178, 34, 34, 0.1) 100%);
    
    /* 阴影效果 */
    --shadow-light: 0 2px 8px rgba(220, 20, 60, 0.1);
    --shadow-medium: 0 4px 16px rgba(220, 20, 60, 0.15);
    --shadow-heavy: 0 8px 32px rgba(220, 20, 60, 0.2);
    --shadow-hover: 0 12px 40px rgba(220, 20, 60, 0.25);
    
    /* 字体 */
    --font-family: "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    
    /* 间距系统 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    --spacing-xxxl: 96px;
    
    /* 其他 */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* 全局样式 */
body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--dark-text);
    background-color: var(--light-bg);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.red-theme {
    --theme-primary: var(--primary-red);
    --theme-secondary: var(--secondary-red);
    --theme-accent: var(--accent-orange);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* 页面加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-red);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loading-spinner {
    text-align: center;
    color: var(--white);
}

.spinner-ring {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 导航栏样式 */
.navbar {
    /*position: fixed;*/
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
    padding: var(--spacing-sm) 0;
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-medium);
    padding: var(--spacing-xs) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand .brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 700;
    font-size: 20px;
    transition: var(--transition);
}

.nav-brand .brand-link:hover {
    color: var(--primary-red);
}

.brand-icon {
    font-size: 24px;
    color: var(--primary-red);
    margin-right: var(--spacing-xs);
}

.brand-text {
    background: var(--red-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    font-size: 16px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-red);
    background: var(--red-gradient-light);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--red-gradient);
    border-radius: 2px;
}

.nav-contact .contact-btn {
    background: var(--red-gradient);
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.nav-contact .contact-btn:hover {
    background: var(--red-gradient-hover);
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

/* 移动端菜单 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: var(--primary-red);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background: var(--white);
    padding: var(--spacing-md);
    transform: translateX(100%);
    transition: var(--transition);
}

.mobile-menu-overlay.active .mobile-menu-content {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary-red);
}

.mobile-menu-header h3 {
    color: var(--primary-red);
    font-size: 18px;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary-red);
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-nav-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.mobile-nav-list li {
    margin-bottom: var(--spacing-sm);
}

.mobile-nav-link {
    display: block;
    color: var(--dark-text);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.mobile-nav-link:hover {
    background: var(--red-gradient-light);
    color: var(--primary-red);
}

.mobile-contact-info {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.mobile-contact-info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    color: var(--medium-gray);
    font-size: 14px;
}

.mobile-contact-info i {
    color: var(--primary-red);
    width: 20px;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--dark-text);
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 50%, #1A1A1A 100%);
    z-index: 1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23DC143C" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(10px, 10px); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(220, 20, 60, 0.9) 0%, rgba(178, 34, 34, 0.8) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    color: var(--white);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.95);
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xxxl);
    animation: fadeInUp 1s ease 0.8s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    min-width: 160px;
    justify-content: center;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-red);
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    background: var(--primary-red);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-red);
    transform: translateY(-3px);
}

/* Hero Features */
.hero-features {
    animation: fadeInUp 1s ease 1s both;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.feature-icon {
    background: var(--white);
    color: var(--primary-red);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-right: var(--spacing-md);
    box-shadow: var(--shadow-light);
}

.feature-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--white);
}

.feature-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--white);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    font-size: 24px;
    margin-bottom: var(--spacing-xs);
}

.scroll-text {
    font-size: 14px;
    opacity: 0.8;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section通用样式 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxxl);
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-red);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-subtitle {
    font-size: 20px;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.title-divider {
    width: 80px;
    height: 4px;
    background: var(--red-gradient);
    margin: 0 auto;
    border-radius: 2px;
}

/* About Section */
.about-section {
    padding: var(--spacing-xxxl) 0;
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxxl);
    align-items: start;
}

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

.card-header {
    background: var(--red-gradient);
    color: var(--white);
    padding: var(--spacing-lg);
}

.card-title {
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-title i {
    font-size: 28px;
}

.card-body {
    padding: var(--spacing-lg);
}

.company-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--dark-text);
    margin-bottom: var(--spacing-lg);
}

.company-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--red-gradient-light);
    border-radius: var(--border-radius);
    font-weight: 600;
    color: var(--primary-red);
}

.highlight-item i {
    font-size: 20px;
}

/* 统计数据 */
.about-stats {
    position: sticky;
    top: 120px;
}
.campany-img{
    margin-bottom: 30px;
}
.campany-img img{
    width: 100%;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stat-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-red);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 14px;
    color: var(--medium-gray);
    font-weight: 600;
}

/* Products Section */
.products-section {
    padding: var(--spacing-xxxl) 0;
    background: var(--light-bg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxxl);
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.product-icon {
    width: 80px;
    height: 80px;
    background: var(--red-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--white);
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-medium);
}

.product-info {
    text-align: center;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.product-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
}

.product-description {
    font-size: 16px;
    color: var(--medium-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
}

.feature-tag {
    background: var(--red-gradient-light);
    color: var(--primary-red);
    padding: 4px var(--spacing-sm);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.product-action {
    text-align: center;
}

.product-btn {
    background: var(--red-gradient);
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.product-btn:hover {
    background: var(--red-gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 产品特色说明 */
.product-features-section {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
}

.features-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-red);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-point {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    background: var(--red-gradient-light);
}

.feature-point i {
    color: var(--primary-red);
    font-size: 18px;
    flex-shrink: 0;
}

.feature-point span {
    font-weight: 500;
    color: var(--dark-text);
}

/* Advantages Section */
.advantages-section {
    padding: var(--spacing-xxxl) 0;
    background: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--spacing-lg);
}

.advantage-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

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

.advantage-icon {
    width: 80px;
    height: 80px;
    background: var(--red-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-medium);
}

.advantage-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: var(--spacing-sm);
}

.advantage-description {
    font-size: 16px;
    color: var(--medium-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.advantage-list {
    list-style: none;
}

.advantage-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
    color: var(--dark-text);
    font-weight: 500;
}

.advantage-list li::before {
    content: '✓';
    color: var(--primary-red);
    font-weight: bold;
    font-size: 16px;
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-xxxl) 0;
    background: var(--light-bg);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxxl);
}

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

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--red-gradient-light);
    opacity: 0;
    transition: var(--transition);
}

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

.contact-card:hover::before {
    opacity: 1;
}

.contact-card * {
    position: relative;
    z-index: 1;
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--red-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--white);
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-medium);
}

.contact-info h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-red);
    margin-bottom: var(--spacing-xs);
    text-decoration: none;
}

.contact-value:hover {
    text-decoration: underline;
}

.contact-desc {
    font-size: 14px;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
}

.contact-btn {
    background: var(--red-gradient);
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
    box-shadow: var(--shadow-light);
    border: none;
    cursor: pointer;
}

.contact-btn:hover {
    background: var(--red-gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 下单流程 */
.order-process {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    margin-bottom: var(--spacing-xl);
}

.process-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-red);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.step-item {
    text-align: center;
    flex: 1;
    min-width: 150px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--red-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
    box-shadow: var(--shadow-medium);
}

.step-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: 14px;
    color: var(--medium-gray);
    line-height: 1.5;
}

.step-arrow {
    color: var(--primary-red);
    font-size: 20px;
    opacity: 0.6;
}

/* 公司地址 */
.company-address {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
    text-align: center;
}

.address-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-red);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.address-text {
    font-size: 18px;
    color: var(--dark-text);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.address-note {
    font-size: 14px;
    color: var(--medium-gray);
    font-style: italic;
}

/* Footer */
.footer {
    background: var(--dark-text);
    color: var(--white);
    padding: var(--spacing-xxxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-md);
}

.footer-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-title i {
    color: var(--primary-red);
    font-size: 28px;
}

.footer-subtitle {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-red);
}

.footer-description {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-md);
}

.footer-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.feature-badge {
    background: var(--primary-red);
    color: var(--white);
    padding: 4px var(--spacing-sm);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.footer-list li {
    margin-bottom: var(--spacing-xs);
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-red);
    text-decoration: underline;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.contact-item i {
    color: var(--primary-red);
    font-size: 16px;
    width: 20px;
    margin-top: 2px;
}

.contact-details {
    flex: 1;
}

.contact-label {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2px;
}

.contact-value {
    font-size: 14px;
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
}

.contact-value:hover {
    color: var(--primary-red);
}

.service-list {
    list-style: none;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.service-list i {
    color: var(--primary-red);
    width: 16px;
}

.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-xl) 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.powered-by {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 4px;
}

.theme-version {
    color: var(--primary-red);
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.back-to-top-link .top-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-red);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.back-to-top-link .top-link:hover {
    color: var(--white);
}

/* 悬浮元素 */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--red-gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-medium);
}

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

.back-to-top:hover {
    background: var(--red-gradient-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.floating-contact {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 1000;
}

.floating-contact-item {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-medium);
}

.wechat-btn {
    background: #07C160;
}

.telegram-btn {
    background: #0088cc;
}

.phone-btn {
    background: var(--primary-red);
}

.floating-contact-item:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-hover);
}

.tooltip {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--dark-text);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.floating-contact-item:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

/* 微信二维码弹窗 */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.wechat-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 400px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

.modal-header {
    background: var(--red-gradient);
    color: var(--white);
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.modal-body {
    padding: var(--spacing-xl);
    text-align: center;
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.qr-placeholder i {
    font-size: 80px;
    color: #07C160;
}

.qr-placeholder p {
    font-size: 16px;
    color: var(--dark-text);
    font-weight: 600;
}

.qr-tip {
    font-size: 14px;
    color: var(--medium-gray) !important;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xxxl: 48px;
        --spacing-xxl: 32px;
        --spacing-xl: 24px;
    }
    
    .nav-menu,
    .nav-contact {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .section-subtitle {
        font-size: 18px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .floating-contact {
        bottom: 80px;
    }
    
    .company-highlights {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .features-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-section {
        padding-top: 60px;
    }
    
    .hero-title {
        font-size: 26px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .feature-icon {
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
    }
    
    .advantage-card,
    .product-card,
    .contact-card {
        padding: var(--spacing-lg);
    }
    
    .floating-contact {
        left: var(--spacing-sm);
    }
    
    .back-to-top {
        right: var(--spacing-sm);
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .back-to-top,
    .floating-contact,
    .scroll-indicator,
    .mobile-menu-overlay,
    .wechat-modal {
        display: none !important;
    }
    
    .hero-section {
        padding-top: 0;
    }
    
    * {
        box-shadow: none !important;
    }
    
    .hero-background,
    .hero-overlay {
        display: none;
    }
    
    .hero-content {
        color: var(--dark-text);
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.3);
        --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.4);
        --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.5);
        --border-color: #999999;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-indicator {
        animation: none;
    }
    
    .hero-background::before {
        animation: none;
    }
}