/* ============================================
   七橙餐饮 - 现代化响应式官网样式
   ============================================ */

/* CSS 变量 - 主题系统 */
:root {
    /* 亮色主题 */
    --primary: #3185fe;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --accent: #00c48c;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 150ms ease;
    --transition: 250ms ease;
    --transition-slow: 350ms ease;
    
    --container-max: 1200px;
    --header-height: 70px;
}

/* 暗色主题 */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    
    --border: #334155;
    --border-light: #1e293b;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

/* 重置与基础 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition), color var(--transition);
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* 容器 */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   主题切换按钮
   ============================================ */
.theme-toggle {
    position: fixed;
    top: 90px;
    right: 20px;
    z-index: 999;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   语言切换
   ============================================ */
.lang-switch {
    position: fixed;
    top: 20px;
    right: 80px;
    z-index: 1001;
    display: flex;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.lang-btn {
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.lang-btn:hover {
    color: var(--primary);
}

.lang-btn.active {
    color: #fff;
    background: var(--primary);
}

/* ============================================
   头部导航
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all var(--transition);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-primary);
}

.logo img {
    border-radius: 8px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    color: var(--text-secondary);
    transition: color var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition);
}

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.work-time {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

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

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

.btn-light:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.mt-20 {
    margin-top: 20px;
}

.mt-auto {
    margin-top: auto;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 999;
    padding: 20px;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
}

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

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav-link {
    font-size: 18px;
    padding: 12px 0;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 100%);
}

.w1080 {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 60px 0;
}

.hero-title {
    font-size: clamp(28px, 4vw, 46px);
    font-weight: 600;
    color: white;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255,255,255,0.95);
    margin-bottom: 10px;
}

.hero-desc {
    font-size: clamp(14px, 1.8vw, 18px);
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
    margin-bottom: 40px;
}

/* 动画 */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   通用区块样式
   ============================================ */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ============================================
   产品介绍
   ============================================ */
.products {
    background: var(--bg-secondary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid var(--border);
}

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

/* 产品内容容器 - 参照原网站结构 */
.product-card .item_cont {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card .i_head {
    padding: 16px 12px;
    text-align: center;
    border-bottom: 1px solid rgba(49, 133, 254, 0.1);
}

.product-card .i_head p {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.product-card .i_main {
    padding: 12px 16px;
    flex: 1;
}

.product-card .i_main > div {
    margin-bottom: 12px;
}

.product-card .i_main > div:last-child {
    margin-bottom: 0;
}

.product-card .i_main h1 {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 4px;
}

.product-card .i_main p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.product-card .i_bot {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, #2563eb 100%);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.product-card .i_bot:hover {
    background: linear-gradient(135deg, #2563eb 0%, var(--primary) 100%);
}

.product-card .i_bot svg {
    transition: transform var(--transition);
}

.product-card .i_bot:hover svg {
    transform: translateX(4px);
}

/* ============================================
   解决方案
   ============================================ */
.solutions {
    background: var(--bg-primary);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.solution-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
}

.solution-card .solution-title {
    font-size: 16px;
    margin-bottom: 8px;
}

.solution-card .solution-desc {
    font-size: 12px;
    line-height: 1.5;
    margin-bottom: 12px;
    flex: 1;
}

.solution-card .solution-tags {
    gap: 6px;
}

.solution-card .tag {
    font-size: 11px;
    padding: 3px 8px;
}

.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.solution-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.solution-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.solution-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    display: inline-block;
    padding: 6px 12px;
    font-size: 12px;
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.solution-card:hover .tag {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ============================================
   自营外卖 / 线上商城
   ============================================ */
.delivery {
    background: var(--bg-secondary);
}

.mall-feature {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.mall-feature:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.mall-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mall-icon svg {
    color: white;
}

.mall-feature h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.mall-feature p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   营销拓客
   ============================================ */
.marketing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.marketing-card {
    padding: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.marketing-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.marketing-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.marketing-icon svg {
    color: white;
}

.marketing-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.marketing-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   服务行业
   ============================================ */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
}

.industry-card {
    padding: 24px 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all var(--transition);
}

.industry-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.industry-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.industry-card span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}

/* ============================================
   特色功能
   ============================================ */
.features {
    background: var(--bg-secondary);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-item img {
    width: 155px;
    height: auto;
    margin-bottom: 30px;
}

.feature-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-content p {
    font-size: 14px;
    color: #999;
    line-height: 1.6;
}

.feature-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   营销功能
   ============================================ */
.marketing {
    background: var(--bg-primary);
}

.marketing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.marketing-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.marketing-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
    transform: translateX(4px);
}

.marketing-item img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    flex-shrink: 0;
}

.marketing-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.marketing-item p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   优秀案例
   ============================================ */
.cases {
    background: var(--bg-secondary);
}

.cases .w1200 {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.cases-title {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.cases-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.cases-stats .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cases-stats .stat-num {
    font-size: 36px;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.2;
}

.cases-stats .stat-num.blue {
    color: #3185fe;
}

.cases-stats .stat-unit {
    font-size: 26px;
    font-weight: 600;
}

.cases-stats .stat-label {
    font-size: 18px;
    margin-top: 15px;
    color: var(--text-secondary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, 220px);
    gap: 20px;
    justify-content: center;
}

.p-cont {
    position: relative;
    width: 200px;
    cursor: pointer;
}

.p-cont.mb20 {
    margin-bottom: 20px;
}

.p-cont.mr10 {
    margin-right: 10px;
}

.p-cont img:first-child {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
}

.p-txt {
    font-size: 14px;
    color: var(--text-primary);
    text-align: center;
    margin-top: 10px;
}

.p-box {
    display: none;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 12px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    width: 200px;
    height: 200px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}

.p-box img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.p-cont:hover .p-box {
    display: flex;
}

.case-btn {
    display: inline-block;
    padding: 12px 16px;
    background: linear-gradient(135deg, #3185fe 0%, #0066ff 100%);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(49, 133, 254, 0.3);
}

.case-btn:hover {
    background: linear-gradient(135deg, #0066ff 0%, #0052cc 100%);
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(49, 133, 254, 0.4);
}

/* 响应式 */
@media screen and (max-width: 1024px) {
    .cases-stats {
        gap: 40px;
    }

    .cases-stats .stat-num {
        font-size: 30px;
    }

    .cases-stats .stat-label {
        font-size: 16px;
    }

    .cases-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .p-cont {
        width: 160px;
    }

    .p-cont img:first-child {
        width: 160px;
        height: 160px;
    }

    .p-box {
        width: 160px;
        height: 160px;
        padding: 8px;
    }

    .case-btn {
        padding: 10px 12px;
        font-size: 13px;
    }
}

@media screen and (max-width: 768px) {
    .cases-title {
        font-size: 28px;
        margin-bottom: 30px;
    }

    .cases-stats {
        gap: 24px;
        margin-bottom: 40px;
    }

    .cases-stats .stat-num {
        font-size: 26px;
    }

    .cases-stats .stat-unit {
        font-size: 20px;
    }

    .cases-stats .stat-label {
        font-size: 14px;
        margin-top: 10px;
    }

    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .p-cont {
        width: 140px;
    }

    .p-cont img:first-child {
        width: 140px;
        height: 140px;
    }

    .p-box {
        width: 140px;
        height: 140px;
        padding: 8px;
    }

    .case-btn {
        padding: 8px 10px;
        font-size: 12px;
    }
}

@media screen and (max-width: 480px) {
    .cases-stats {
        gap: 16px;
        flex-wrap: wrap;
    }

    .cases-stats .stat-item {
        width: 45%;
        text-align: center;
    }

    .cases-stats .stat-num {
        font-size: 22px;
    }

    .cases-stats .stat-label {
        font-size: 12px;
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        justify-content: center;
    }

    .p-cont {
        width: 100%;
        max-width: none;
        margin: 0 auto 12px;
    }

    .p-cont.mr10 {
        margin-right: 0;
    }

    .p-cont img:first-child {
        width: 100%;
        height: auto;
        aspect-ratio: 1;
    }

    .p-box {
        width: 100%;
        height: auto;
        min-height: 60px;
        padding: 10px;
    }

    .case-btn {
        padding: 8px 10px;
        font-size: 12px;
    }
}

/* ============================================
   公司介绍
   ============================================ */
.about {
    background: var(--bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

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

.about-text {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    text-align: justify;
}

.about-contact h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-card:hover {
    background: var(--bg-tertiary);
    transform: translateX(4px);
}

.contact-card .contact-icon {
    font-size: 24px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 10px;
    flex-shrink: 0;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.contact-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   服务理念
   ============================================ */
.service-philosophy {
    background: var(--bg-secondary);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.philosophy-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.philosophy-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.philosophy-content {
    padding: 24px;
}

.philosophy-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.philosophy-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   CTA 区域
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
    text-align: center;
}

.cta-title {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 700;
    color: white;
    margin-bottom: 32px;
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
    background: var(--bg-dark);
    color: var(--text-inverse);
    padding: 60px 0 30px;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-contact h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-contact p {
    font-size: 16px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 10px;
}

.footer-email {
    font-size: 14px !important;
}

.footer-qrcode {
    text-align: center;
}

.footer-qrcode img {
    width: 120px;
    border-radius: 8px;
    margin-bottom: 12px;
}

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

.footer-copyright {
    text-align: center;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
}

.footer-copyright p {
    margin-bottom: 8px;
}

.footer-icp {
    font-size: 12px !important;
}

/* 响应式 */
@media (max-width: 768px) {
    .site-footer {
        padding: 40px 0 20px;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 30px;
    }

    .footer-contact p {
        font-size: 14px;
    }
}

/* ============================================
   悬浮客服
   ============================================ */
.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 100;
}

.float-btn {
    position: relative;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    font-size: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition);
}

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

.float-btn span {
    margin-top: 4px;
}

.float-popup {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    padding: 16px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    text-align: center;
}

.float-btn:hover .float-popup {
    opacity: 1;
    visibility: visible;
}

.float-popup h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.float-popup img {
    width: 140px;
    margin: 0 auto 12px;
}

.float-popup p {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.float-popup .phone {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

/* ============================================
   咨询弹窗
   ============================================ */
.zx,
.modal-overlay,
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    padding: 20px;
}

.zx.active,
.modal-overlay.active,
.modal.active {
    opacity: 1;
    visibility: visible;
}

/* back5.png 背景弹窗 */
.zx > div {
    background-size: cover;
    background-position: center;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    position: relative;
}

.zx .t-r {
    position: absolute;
    top: 10px;
    right: 10px;
    margin-bottom: 0;
}

.zx .t-c {
    text-align: center;
}

.zx .mb0 {
    margin-bottom: 0;
}

.zx .mb20 {
    margin-bottom: 20px;
}

.zx .f30 {
    font-size: 30px;
    font-weight: 600;
    color: #333;
}

.zx .f14 {
    font-size: 14px;
    color: #333;
}

.zx .f15 {
    font-size: 15px;
}

.zx .f24 {
    font-size: 24px;
    font-weight: 600;
}

.zx .c9 {
    color: #999;
}

.zx .mt15 {
    margin-top: 15px;
}

.zx .z_item {
    margin-bottom: 20px;
}

.zx .z_head {
    background-size: cover;
    background-position: center;
    color: white;
    font-size: 20px;
    font-weight: 600;
    padding: 16px;
    border-radius: 12px 12px 0 0;
}

.zx .z_cont {
    background: white;
    padding: 24px;
    border-radius: 0 0 12px 12px;
    text-align: center;
}

.zx .z_cont img {
    border-radius: 8px;
    display: block;
    margin: 0 auto;
}

.zx .wei6 {
    font-weight: 600;
}

.zx .cf {
    clear: both;
}

.zx .f-c-c {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    max-width: 450px;
    width: 100%;
    padding: 40px;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-secondary);
    font-size: 24px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 24px;
}

.modal-body {
    text-align: center;
}

.consultant-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.consultant-section h3 {
    font-size: 16px;
}

/* 服务咨询弹窗 */
.service-popup-modal {
    width: 520px;
    max-width: 100%;
    background-image: url('./img/back5.png');
    background-size: cover;
    background-position: center;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    position: relative;
}

.service-popup-modal .modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
}

.service-popup-modal .t-c {
    text-align: center;
}

.service-popup-modal .t-r {
    text-align: right;
}

.service-popup-modal .mb0 {
    margin-bottom: 0;
}

.service-popup-modal .mb20 {
    margin-bottom: 20px;
}

.service-popup-modal .f30 {
    font-size: 30px;
    font-weight: 600;
    color: #333;
}

.service-popup-modal .f14 {
    font-size: 14px;
    color: #333;
}

.service-popup-modal .f15 {
    font-size: 15px;
}

.service-popup-modal .f24 {
    font-size: 24px;
    font-weight: 600;
}

.service-popup-modal .c9 {
    color: #999;
}

.service-popup-modal .mt15 {
    margin-top: 15px;
}

.service-popup-modal .z_item {
    margin-bottom: 20px;
}

.service-popup-modal .z_head {
    background-image: url('./img/back6.png');
    background-size: cover;
    background-position: center;
    color: white;
    font-size: 20px;
    font-weight: 600;
    padding: 16px;
    border-radius: 12px 12px 0 0;
}

.service-popup-modal .z_cont {
    background: white;
    padding: 24px;
    border-radius: 0 0 12px 12px;
}

.service-popup-modal .z_cont img {
    border-radius: 8px;
}

.service-popup-modal .wei6 {
    font-weight: 600;
}

.service-popup-modal .cf {
    clear: both;
}

.service-popup-modal .f-c-c {
    display: flex;
    justify-content: center;
    align-items: center;
}
    font-size: 14px;
    color: var(--text-secondary);
}

.consult-phone strong {
    font-size: 24px;
    color: var(--primary);
    font-weight: 700;
}

/* ============================================
   响应式设计
   ============================================ */

/* 平板和大手机 */
@media screen and (max-width: 1024px) {
    :root {
        --header-height: 60px;
    }

    .section {
        padding: 60px 0;
    }

    .nav {
        display: none;
    }

    .header-actions {
        gap: 12px;
    }

    .header-actions .work-time {
        display: none;
    }

    .header-actions > a:not(.mobile-menu-btn) {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .lang-switch {
        top: 15px;
        right: 70px;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + 40px) 0 60px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-image {
        order: -1;
    }

    .solutions-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .solution-card {
        padding: 20px 16px;
    }

    .solution-card .solution-title {
        font-size: 15px;
    }

    .solution-card .solution-desc {
        font-size: 12px;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* 手机 */
@media screen and (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .section {
        padding: 48px 0;
    }

    .section-header {
        margin-bottom: 32px;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .solution-card {
        padding: 16px;
    }

    .solution-card .solution-title {
        font-size: 14px;
    }

    .solution-card .solution-icon {
        font-size: 36px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .feature-item img {
        width: 120px;
        margin-bottom: 20px;
    }

    .feature-content h3 {
        font-size: 16px;
    }

    .feature-content p {
        font-size: 13px;
    }

    .marketing-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
    }

    .floating-buttons {
        right: 12px;
        bottom: 80px;
    }

    .float-btn {
        width: 48px;
        height: 48px;
        font-size: 10px;
    }

    .float-popup {
        right: 60px;
        min-width: 180px;
        padding: 12px;
    }

    .float-popup img {
        width: 120px;
    }

    .modal-content {
        padding: 24px;
    }

    .theme-toggle {
        top: 80px;
        right: 12px;
        width: 40px;
        height: 40px;
    }

    .lang-switch {
        top: 15px;
        right: 60px;
    }

    .lang-btn {
        padding: 4px 10px;
        font-size: 12px;
    }
}

/* 小手机 */
@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-desc {
        font-size: 14px;
    }

    .btn-lg {
        padding: 12px 24px;
        font-size: 14px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-number {
        font-size: 28px;
    }

    .stat-label {
        font-size: 12px;
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .case-info {
        padding: 12px;
    }

    .case-info h4 {
        font-size: 13px;
        margin-bottom: 8px;
    }

    .case-qr {
        width: 80px;
        height: 80px;
    }

    .cta-section {
        padding: 48px 0;
    }

    .cta-title {
        font-size: 18px;
    }
}

/* 超小手机 */
@media screen and (max-width: 360px) {
    .hero {
        padding: calc(var(--header-height) + 20px) 0 40px;
    }

    .section-title {
        font-size: 22px;
    }

    .solution-card {
        padding: 24px;
    }

    .feature-card {
        padding: 24px;
    }
}

/* 触摸滚动优化 */
@media (hover: none) {
    .float-popup {
        display: none;
    }

    .float-btn:active .float-popup {
        display: block;
        opacity: 1;
        visibility: visible;
    }
}

/* 打印样式 */
@media print {
    .header,
    .theme-toggle,
    .floating-buttons,
    .modal {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }
}

/* ============================================
   悬浮客服
   ============================================ */
.floating-service {
    position: fixed;
    bottom: 100px;
    right: 20px;
    z-index: 1000;
}

.service-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(49, 133, 254, 0.4);
    transition: all 0.3s ease;
}

.service-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(49, 133, 254, 0.5);
}

.service-popup {
    position: absolute;
    bottom: 60px;
    right: 0;
    width: 280px;
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 20px;
    display: none;
    animation: fadeInUp 0.3s ease;
}

.service-popup.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.service-header h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: 2px;
}

.service-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-tertiary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.service-close:hover {
    color: var(--text-primary);
}

.service-tip {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.service-wechat {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
    text-align: center;
}

.service-actions {
    display: flex;
    gap: 10px;
}

.btn-service {
    flex: 1;
    padding: 10px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.btn-demo:hover {
    background: #00a876;
    transform: translateY(-2px);
}

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

.btn-call:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============================================
   优秀案例
   ============================================ */
.cases {
    background: var(--bg-secondary);
}

.cases .section-header {
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: var(--bg-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.stat-number {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-unit {
    font-size: 20px;
}

.stat-text {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

.industry-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.industry-tag {
    padding: 8px 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    cursor: default;
}

.industry-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(49, 133, 254, 0.05);
}

/* ============================================
   演示案例
   ============================================ */
.demo-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 40px 0;
    margin-top: 48px;
    border-radius: 16px;
}

.demo-case {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 60px 0;
}

.demo-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.demo-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

.demo-qr {
    background: white;
    padding: 12px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.demo-qr img {
    display: block;
}

.demo-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.demo-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.demo-desc {
    font-size: 14px;
    opacity: 0.9;
    margin: 0;
}

.demo-phone {
    font-size: 16px;
    margin: 8px 0 0 0;
}

.demo-phone a {
    color: white;
    font-weight: 700;
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.5);
}

.demo-phone a:hover {
    border-bottom-color: white;
}

/* ============================================
   特色功能关键词标签
   ============================================ */
.feature-keywords {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.keyword-tag {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.keyword-tag:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .feature-keywords {
        gap: 8px;
        margin-top: 30px;
        padding-top: 30px;
    }

    .keyword-tag {
        padding: 6px 12px;
        font-size: 12px;
    }
}

/* 响应式 */
@media (max-width: 768px) {
    .floating-service {
        bottom: 80px;
        right: 15px;
    }

    .service-btn {
        padding: 10px 16px;
        font-size: 13px;
    }

    .service-popup {
        width: 260px;
        right: -10px;
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .stat-item {
        padding: 16px 12px;
    }

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

    .industry-grid {
        gap: 8px;
    }

    .industry-tag {
        padding: 6px 14px;
        font-size: 13px;
    }

    .demo-case {
        padding: 40px 0;
    }

    .service-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-list {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .feature-item img {
        width: 100px;
    }
}