:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --education-color: #9b59b6;
    --medical-color: #1abc9c;
    --service-color: #f1c40f;
    --retail-color: #e67e22;
    --dining-color: #e74c3c;
    --light-bg: #f8f9fa;
    --dark-text: #2d3436;
    --light-text: #636e72;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #fff;
    color: var(--dark-text);
    line-height: 1.6;
}

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

/* 头部样式 */
header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #34495e 100%);
    color: white;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

    .logo span {
        color: var(--accent-color);
    }

    .logo i {
        font-size: 1.8rem;
    }

/* 桌面端导航 */
nav ul {
    display: flex;
    list-style: none;
    gap: 25px;
    margin: 0;
    padding: 0;
}

nav li {
    position: relative;
}

nav a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
    position: relative;
    display: block;
}

    nav a:hover,
    nav a.active {
        color: white;
    }

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

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

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

    .mobile-menu-btn span {
        width: 25px;
        height: 3px;
        background: white;
        margin: 2px 0;
        transition: var(--transition);
        border-radius: 2px;
    }

/* 移动端导航样式 */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--secondary-color);
    z-index: 999;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    padding: 80px 20px 20px;
    overflow-y: auto;
}

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

    .mobile-nav ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-nav li {
        margin-bottom: 15px;
    }

    .mobile-nav a {
        color: white;
        text-decoration: none;
        font-size: 1.2rem;
        font-weight: 500;
        padding: 12px 0;
        display: block;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        transition: var(--transition);
    }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--accent-color);
            padding-left: 10px;
        }

.mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 移动端菜单激活状态 */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}


/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://images.unsplash.com/photo-1560472354-b33ff0c44a43?ixlib=rb-1.2.1&auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
    text-align: center;
    margin-bottom: 50px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
}

    .search-box input {
        flex: 1;
        padding: 15px 20px;
        border: none;
        border-radius: 50px 0 0 50px;
        font-size: 1rem;
    }

    .search-box button {
        background: var(--primary-color);
        color: white;
        border: none;
        padding: 0 25px;
        border-radius: 0 50px 50px 0;
        cursor: pointer;
        font-weight: 500;
        transition: var(--transition);
    }

        .search-box button:hover {
            background: #2980b9;
        }

/* 行业导航 */
.industries {
    margin-bottom: 60px;
}

.section-title {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

    .section-title h2 {
        color: var(--secondary-color);
        font-size: 2rem;
    }

    .section-title span {
        width: 40px;
        height: 4px;
        background: var(--primary-color);
        margin-right: 15px;
    }

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

.industry-card {
    background: white;
    padding: 25px 20px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

    .industry-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

.industry-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 28px;
    color: white;
}

.education .industry-icon {
    background: var(--education-color);
}

.medical .industry-icon {
    background: var(--medical-color);
}

.service .industry-icon {
    background: var(--service-color);
}

.retail .industry-icon {
    background: var(--retail-color);
}

.dining .industry-icon {
    background: var(--dining-color);
}

.industry-card h3 {
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.industry-card p {
    color: var(--light-text);
    font-size: 0.9rem;
}

/* 热门推荐 */
.featured {
    margin-bottom: 60px;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.business-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

    .business-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

.card-content {
    padding: 20px;
}

    .card-content h3 {
        color: var(--secondary-color);
        margin-bottom: 10px;
        font-size: 1.3rem;
    }

    .card-content p {
        color: var(--light-text);
        margin-bottom: 15px;
        font-size: 0.95rem;
    }

.rating {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.stars {
    color: var(--accent-color);
    margin-right: 10px;
}

.rating-num {
    background: var(--primary-color);
    color: white;
    font-weight: bold;
    padding: 3px 8px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--light-bg);
    padding-top: 15px;
    margin-top: 15px;
}

.price {
    color: var(--primary-color);
    font-weight: bold;
}

.view-btn {
    background: var(--secondary-color);
    color: white;
    text-decoration: none;
    padding: 6px 15px;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* 特色区域 */
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    }

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--light-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-color);
    font-size: 28px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.feature-card p {
    color: var(--light-text);
}

/* 行动号召 */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2980b9 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
    border-radius: 10px;
    margin-bottom: 60px;
}

    .cta h2 {
        font-size: 2.5rem;
        margin-bottom: 20px;
    }

    .cta p {
        max-width: 600px;
        margin: 0 auto 30px;
        font-size: 1.1rem;
        opacity: 0.9;
    }

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

    .btn-primary:hover {
        background: var(--light-bg);
        transform: translateY(-3px);
    }

.btn-outline {
    border: 2px solid white;
    color: white;
}

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

/* 页脚 */

/* 页脚自适应样式 */
footer {
    background: var(--secondary-color);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 10px;
}

    .footer-column h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 40px;
        height: 2px;
        background: var(--accent-color);
    }

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

    .footer-column a:hover {
        color: var(--accent-color);
        transform: translateX(5px);
    }

/* 备案号专用样式 */
.copyright {
    text-align: center;
    padding: 25px 0 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    position: relative;
}

.copyright-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.copyright-text {
    line-height: 1.5;
}

.copyright-links {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 5px;
}

.icp-beian {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    padding: 6px 12px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
}

    .icp-beian:hover {
        color: var(--accent-color);
        background: rgba(255, 255, 255, 0.1);
        transform: translateY(-1px);
    }

    .icp-beian i {
        font-size: 0.8rem;
    }

.icp-img {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: var(--transition);
}

    .icp-img:hover {
        transform: translateY(-1px);
    }

    .icp-img img {
        width: 16px;
        height: 16px;
        vertical-align: middle;
    }

.icp-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    transition: var(--transition);
}

.icp-img:hover .icp-text {
    color: var(--accent-color);
}

.security-record {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    padding: 6px 12px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
}

    .security-record:hover {
        color: var(--accent-color);
        background: rgba(255, 255, 255, 0.1);
        transform: translateY(-1px);
    }

.legal-info {
    margin-top: 10px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.4;
}

.legal-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 8px;
}

    .legal-links a {
        color: rgba(255, 255, 255, 0.6);
        text-decoration: none;
        font-size: 0.8rem;
        transition: var(--transition);
    }

        .legal-links a:hover {
            color: var(--accent-color);
        }

/* 备案号徽章样式 */
.icp-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    text-decoration: none;
}

    .icp-badge:hover {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.1) 100%);
        border-color: rgba(255, 255, 255, 0.2);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }

.icp-badge-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.85rem;
    font-weight: 500;
}

.icp-badge i {
    color: var(--accent-color);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .copyright {
        padding: 20px 0 12px;
    }

    .copyright-content {
        gap: 10px;
    }

    .copyright-text {
        font-size: 0.85rem;
        text-align: center;
        line-height: 1.4;
    }

    .copyright-links {
        flex-direction: column;
        gap: 12px;
    }

    .icp-beian,
    .security-record {
        padding: 5px 10px;
        font-size: 0.8rem;
    }

    .legal-info {
        font-size: 0.75rem;
        text-align: center;
    }

    .legal-links {
        flex-wrap: wrap;
        gap: 10px;
    }

        .legal-links a {
            font-size: 0.75rem;
        }

    .icp-badge {
        padding: 6px 14px;
    }

    .icp-badge-text {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .copyright {
        padding: 15px 0 10px;
    }

    .copyright-text {
        font-size: 0.8rem;
    }

    .icp-beian,
    .security-record {
        padding: 4px 8px;
        font-size: 0.75rem;
    }

    .legal-info {
        font-size: 0.7rem;
    }

    .legal-links {
        gap: 8px;
    }

        .legal-links a {
            font-size: 0.7rem;
        }

    .icp-badge {
        padding: 5px 12px;
    }

    .icp-badge-text {
        font-size: 0.75rem;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .copyright {
        border-top: 2px solid rgba(255, 255, 255, 0.3);
    }

    .icp-beian,
    .security-record,
    .icp-badge {
        border: 2px solid rgba(255, 255, 255, 0.3);
    }

        .icp-beian:hover,
        .security-record:hover,
        .icp-badge:hover {
            border-color: var(--accent-color);
        }
}

/* 减少动画支持 */
@media (prefers-reduced-motion: reduce) {
    .icp-beian,
    .security-record,
    .icp-badge,
    .legal-links a {
        transition: none;
    }

        .icp-beian:hover,
        .security-record:hover,
        .icp-badge:hover {
            transform: none;
        }
}

/* 深色模式优化 */
@media (prefers-color-scheme: dark) {
    .icp-beian,
    .security-record {
        background: rgba(255, 255, 255, 0.08);
    }

        .icp-beian:hover,
        .security-record:hover {
            background: rgba(255, 255, 255, 0.12);
        }
}

/* 触摸设备优化 */
@media (hover: none) {
    .icp-beian:hover,
    .security-record:hover,
    .icp-badge:hover,
    .legal-links a:hover {
        transform: none;
    }
}

/* 打印样式 */
@media print {
    .copyright {
        border-top: 1px solid #ccc;
        color: #666;
    }

    .icp-beian,
    .security-record,
    .icp-badge {
        background: transparent;
        border: 1px solid #ccc;
        color: #666;
    }

    .legal-links a {
        color: #666;
    }
}

/* 社交媒体图标 */
.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

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

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

/* 响应式设计 */
@media (max-width: 992px) {
    /* 头部导航响应式 */
    .mobile-menu-btn {
        display: flex;
    }

    nav ul {
        display: none;
    }

    /* 页脚响应式 */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 12px 0;
    }

    .logo {
        font-size: 1.3rem;
    }

        .logo i {
            font-size: 1.5rem;
        }

    .mobile-menu-btn {
        width: 35px;
        height: 35px;
    }

        .mobile-menu-btn span {
            width: 20px;
            height: 2px;
        }

    /* 页脚响应式 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .footer-column h3::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .social-links {
        justify-content: center;
    }

    .footer-column a {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    header {
        padding: 10px 0;
    }

    .logo {
        font-size: 1.2rem;
        gap: 8px;
    }

        .logo i {
            font-size: 1.3rem;
        }

    .mobile-menu-btn {
        width: 30px;
        height: 30px;
    }

    .mobile-nav {
        padding: 70px 15px 15px;
    }

        .mobile-nav a {
            font-size: 1.1rem;
            padding: 10px 0;
        }

    .mobile-nav-close {
        top: 15px;
        right: 15px;
        width: 35px;
        height: 35px;
    }

    /* 页脚响应式 */
    footer {
        padding: 40px 0 15px;
    }

    .footer-content {
        gap: 25px;
    }

    .footer-column h3 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }

    .footer-column li {
        margin-bottom: 10px;
    }

    .social-links a {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }

    .copyright {
        font-size: 0.8rem;
        padding-top: 15px;
    }
}

/* 移动端特殊样式 */
@media (max-width: 768px) and (orientation: landscape) {
    .mobile-nav {
        padding: 60px 20px 20px;
    }

        .mobile-nav ul {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .mobile-nav li {
            margin-bottom: 10px;
        }
}

/* 触摸设备优化 */
@media (hover: none) {
    nav a:hover::after {
        width: 0;
    }

    nav a.active::after {
        width: 100%;
    }

    .footer-column a:hover {
        transform: none;
    }

    .social-links a:hover {
        transform: none;
    }

    /* 增加触摸目标大小 */
    nav a {
        padding: 12px 0;
    }

    .footer-column a {
        padding: 8px 0;
    }

    .mobile-nav a {
        padding: 15px 0;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .mobile-nav {
        background: #2c3e50;
    }
}

/* 减少动画（对于偏好减少动画的用户） */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .mobile-nav {
        transition: none;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    nav a {
        border: 1px solid transparent;
    }

    .footer-column a {
        font-weight: 600;
    }
}

/* JavaScript交互类 */
.menu-open {
    overflow: hidden;
}

    .menu-open body {
        overflow: hidden;
    }

/* 加载状态 */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* 焦点样式（ accessibility ） */
nav a:focus,
.mobile-nav a:focus,
.footer-column a:focus,
.mobile-menu-btn:focus,
.mobile-nav-close:focus {
   /* outline: 2px solid var(--accent-color);
    outline-offset: 2px;*/
}

/* 键盘导航优化 */
nav a:focus-visible,
.mobile-nav a:focus-visible {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .industry-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    nav ul {
        margin-top: 20px;
        justify-content: center;
        flex-wrap: wrap;
    }

    nav li {
        margin: 10px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

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

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

    .search-box {
        flex-direction: column;
    }

        .search-box input {
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .search-box button {
            border-radius: 50px;
            padding: 12px;
        }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .industry-grid {
        grid-template-columns: 1fr;
    }
}