/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    color: white;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffd700;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 120px 0 80px;
    color: white;
    display: flex;
    align-items: center;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="rgba(255,255,255,0.1)"/><stop offset="100%" stop-color="rgba(255,255,255,0)"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="300" cy="800" r="120" fill="url(%23a)"/></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-shadow: 0 4px 8px rgba(0,0,0,0.2);
    background: linear-gradient(45deg, #ffffff, #f0f8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #ffd700;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 0 10px rgba(255, 215, 0, 0.3); }
    to { text-shadow: 0 2px 4px rgba(0,0,0,0.3), 0 0 20px rgba(255, 215, 0, 0.6); }
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #ffd700;
    color: #333;
}

.btn-primary:hover {
    background: #ffed4e;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(15px);
    border: 2px solid rgba(255,255,255,0.2);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

.hero-graphic i {
    font-size: 8rem;
    color: rgba(255,255,255,0.8);
}

/* 通用区块样式 */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
}

/* 服务项目 */
.services {
    padding: 80px 0;
    background: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.08);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    border: 1px solid rgba(255,255,255,0.8);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 25px 50px rgba(102, 126, 234, 0.15);
}

.service-card:hover::before {
    left: 100%;
}

.service-card.featured {
    border: 3px solid #ffd700;
    position: relative;
    background: linear-gradient(145deg, #fffbf0 0%, #fff8e1 100%);
    box-shadow: 0 15px 35px rgba(255, 215, 0, 0.2);
}

.service-card.featured:hover {
    box-shadow: 0 25px 50px rgba(255, 215, 0, 0.3);
}

.service-card.featured::after {
    content: "热门服务";
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #333;
    padding: 8px 25px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    z-index: 10;
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
    font-weight: 600;
}

.service-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    margin-bottom: 2rem;
}

.service-features li {
    padding: 0.5rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.service-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.service-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* 二维码样式 */
.qr-codes {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.qr-code {
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.qr-code:hover {
    transform: translateY(-5px);
}

.qr-placeholder {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 3px solid #28a745;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.8rem;
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.2);
    transition: all 0.3s ease;
}

.qr-code:hover .qr-placeholder {
    box-shadow: 0 10px 25px rgba(40, 167, 69, 0.3);
    border-color: #20c997;
}

.qr-placeholder i {
    font-size: 2rem;
    color: #28a745;
    margin-bottom: 0.5rem;
}

.qr-placeholder p {
    font-size: 0.8rem;
    margin: 0;
    color: #666;
    font-weight: 600;
}

.qr-code span {
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

/* 二维码弹出层 */
.qr-popup {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    border: 2px solid #28a745;
    min-width: 180px;
    pointer-events: none;
}

.qr-popup::before {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid #28a745;
}

.qr-popup::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid white;
}

.qr-code:hover .qr-popup {
    opacity: 1 !important;
    visibility: visible !important;
    top: -220px !important;
    pointer-events: auto;
}

.qr-popup img {
    width: 150px !important;
    height: 150px !important;
    max-width: 150px !important;
    max-height: 150px !important;
    min-width: 150px !important;
    min-height: 150px !important;
    border-radius: 10px;
    margin-bottom: 0.5rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    object-fit: cover;
    display: block;
}

.qr-popup p {
    margin: 0;
    font-size: 0.9rem;
    color: #333;
    font-weight: 600;
    text-align: center;
}

/* 文章区块 */
.articles {
    padding: 80px 0;
    background: white;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.article-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.article-card:hover {
    background: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

.article-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.article-icon i {
    font-size: 1.5rem;
    color: white;
}

.article-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
    font-weight: 600;
}

.article-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.article-link {
    color: #28a745;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.article-link:hover {
    color: #20c997;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: #333;
    font-weight: 700;
}

.about-text p {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

.company-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #667eea;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-weight: 500;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-graphic {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-graphic i {
    font-size: 6rem;
    color: white;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: #e9ecef;
    transform: translateX(10px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon i {
    font-size: 1.5rem;
    color: white;
}

.contact-details h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 600;
}

.contact-details p {
    color: #666;
    font-size: 1.1rem;
}

.contact-details small {
    color: #999;
    font-size: 0.9rem;
    display: block;
    margin-top: 0.25rem;
    font-style: italic;
}

/* 联系我们二维码网格 */
.contact-qr-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1.5rem;
}

.contact-qr-item {
    text-align: center;
    transition: all 0.3s ease;
    width: 140px;
    margin: 0 auto;
}

.contact-qr-item:hover {
    transform: translateY(-5px);
}

.qr-placeholder-medium {
    width: 140px !important;
    height: 140px !important;
    max-width: 140px !important;
    max-height: 140px !important;
    min-width: 140px !important;
    min-height: 140px !important;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 3px solid #28a745;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.2);
    transition: all 0.3s ease;
    overflow: hidden;
}

.contact-qr-item:hover .qr-placeholder-medium {
    box-shadow: 0 12px 35px rgba(40, 167, 69, 0.3);
    border-color: #20c997;
}

.qr-image-medium {
    width: 120px !important;
    height: 120px !important;
    max-width: 120px !important;
    max-height: 120px !important;
    min-width: 120px !important;
    min-height: 120px !important;
    border-radius: 10px;
    object-fit: cover;
    transition: all 0.3s ease;
    display: block;
}

.contact-qr-item:hover .qr-image-medium {
    transform: scale(1.05);
}

.contact-qr-item p {
    font-size: 0.9rem;
    color: #666;
    font-weight: 600;
    margin: 0;
}

.wechat-follow {
    text-align: center;
}

.wechat-follow h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #333;
    font-weight: 600;
}

.qr-code-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all 0.3s ease;
}

.qr-code-large:hover {
    transform: translateY(-5px);
}

.qr-placeholder-large {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 4px solid #28a745;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    box-shadow: 0 10px 30px rgba(40, 167, 69, 0.2);
    transition: all 0.3s ease;
    overflow: hidden;
}

.qr-code-large:hover .qr-placeholder-large {
    box-shadow: 0 15px 40px rgba(40, 167, 69, 0.3);
    border-color: #20c997;
}

.qr-image-large {
    width: 160px !important;
    height: 160px !important;
    max-width: 160px !important;
    max-height: 160px !important;
    min-width: 160px !important;
    min-height: 160px !important;
    border-radius: 15px;
    object-fit: cover;
    transition: all 0.3s ease;
    display: block;
}

.qr-code-large:hover .qr-image-large {
    transform: scale(1.05);
}

.qr-placeholder-large i {
    font-size: 3rem;
    color: #28a745;
    margin-bottom: 0.5rem;
}

.qr-placeholder-large p {
    font-size: 1rem;
    margin: 0;
    color: #666;
    font-weight: 600;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ffd700;
}

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

.footer-section ul li {
    padding: 0.25rem 0;
    color: #ccc;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(102, 126, 234, 0.95);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        backdrop-filter: blur(10px);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .company-stats {
        justify-content: center;
    }
    
    .contact-qr-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .qr-placeholder-medium {
        width: 120px !important;
        height: 120px !important;
        max-width: 120px !important;
        max-height: 120px !important;
        min-width: 120px !important;
        min-height: 120px !important;
    }
    
    .qr-image-medium {
        width: 100px !important;
        height: 100px !important;
        max-width: 100px !important;
        max-height: 100px !important;
        min-width: 100px !important;
        min-height: 100px !important;
    }
    
    .hero-graphic {
        width: 200px;
        height: 200px;
    }
    
    .hero-graphic i {
        font-size: 5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .service-card {
        padding: 2rem 1.5rem;
    }
    
    .company-stats {
        flex-direction: column;
        gap: 1rem;
    }
}

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

.service-card,
.article-card,
.contact-item {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动平滑 */
html {
    scroll-behavior: smooth;
}

/* 选择文本颜色 */
::selection {
    background: #667eea;
    color: white;
}