/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --secondary-light: #fbbf24;
    --accent-color: #ec4899;
    --accent-light: #f472b6;
    --bg-color: #fafafa;
    --bg-card: #ffffff;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 16px;
    --radius-lg: 24px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 16px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 15px;
    padding: 10px 20px;
    border-radius: 12px;
    transition: var(--transition);
}

.nav-links a:hover {
    background: var(--primary-color);
    color: var(--white);
}

.nav-links a.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* 首页横幅 */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    max-width: 800px;
    color: var(--white);
    z-index: 2;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 20px;
    opacity: 0.95;
    font-weight: 500;
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 48px;
    opacity: 0.9;
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 8px;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

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

.btn-full {
    width: 100%;
}

.hero-decoration {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.1;
    display: none;
}

.yin-yang {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(to bottom, var(--white) 50%, var(--secondary-color) 50%);
    position: relative;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 通用部分标题 */
.section-title {
    text-align: center;
    font-size: 40px;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 60px;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    margin: 20px auto 0;
}

/* 特色优势 */
.features {
    padding: 120px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-card {
    text-align: center;
    padding: 48px 32px;
    border-radius: var(--radius-lg);
    background: var(--bg-color);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(99, 102, 241, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
}

.feature-card h3 {
    font-size: 20px;
    color: var(--text-color);
    margin-bottom: 12px;
    font-weight: 700;
}

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

/* 关于我们 */
.about {
    padding: 120px 0;
    background: var(--bg-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 32px;
}

.about-text .section-title::after {
    margin: 20px 0 0;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.9;
    color: var(--text-light);
    font-size: 16px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.stat-item {
    text-align: center;
    padding: 28px 20px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
}

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

.image-placeholder {
    width: 100%;
    max-width: 500px;
    height: 450px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-color) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    font-weight: 600;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.about-photo {
    width: 100%;
    max-width: 500px;
    height: 450px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.about-photo:hover {
    transform: scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* 服务项目 */
.services {
    padding: 120px 0;
    background: var(--white);
}

.services-intro {
    text-align: center;
    font-size: 20px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 48px;
    margin-top: -30px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    border-color: rgba(99, 102, 241, 0.1);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.service-card.featured {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
    border: 2px solid var(--primary-color);
}

.service-card.featured::before {
    transform: scaleX(1);
}

.service-card.featured .service-number {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

.service-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.service-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
}

.service-card h3 {
    font-size: 20px;
    color: var(--text-color);
    font-weight: 700;
}

.service-card > p {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
    font-size: 15px;
}

.service-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.service-list li {
    padding-left: 24px;
    position: relative;
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
}

/* 专家团队 */
.team {
    padding: 120px 0;
    background: var(--bg-color);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.team-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

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

.team-avatar {
    width: 100px;
    height: 100px;
    background: var(--white);
    border-radius: 50%;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
    border: 4px solid var(--white);
}

.team-card h3 {
    font-size: 22px;
    color: var(--text-color);
    margin-bottom: 8px;
    font-weight: 700;
}

.team-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 16px;
    font-size: 14px;
}

.team-desc {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 15px;
}

/* 客户评价 */
.testimonials {
    padding: 120px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.testimonials .section-title {
    color: var(--white);
}

.testimonials .section-title::after {
    background: var(--white);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.testimonial-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.testimonial-content {
    margin-bottom: 24px;
}

.testimonial-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--white);
    font-style: italic;
}

.testimonial-content p::before {
    content: '"';
    font-size: 48px;
    color: rgba(255, 255, 255, 0.3);
    line-height: 1;
    display: block;
    margin-bottom: 8px;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.author-name {
    font-weight: 700;
    color: var(--white);
    font-size: 18px;
}

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

/* 联系我们 */
.contact {
    padding: 120px 0;
    background: var(--bg-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-content-centered {
    max-width: 600px;
    margin: 0 auto;
}

.contact-content-centered .contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.contact-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--text-color);
    margin-bottom: 6px;
    font-size: 16px;
    font-weight: 700;
}

.contact-item p {
    color: var(--text-light);
    font-size: 15px;
}

.contact-qrcode {
    background: var(--white);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}

.contact-qrcode h3 {
    color: var(--text-color);
    margin-bottom: 32px;
    font-size: 22px;
    font-weight: 700;
}

.qrcode-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}

.qrcode-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-color) 100%);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
    transition: var(--transition);
}

.qrcode-placeholder:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.4);
}

.qrcode-placeholder span {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.qrcode-placeholder p {
    font-size: 12px;
    opacity: 0.8;
}

.qrcode-tip {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 8px;
}

/* 页脚 */
.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-content {
    text-align: center;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.footer-logo .logo-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.footer-logo .logo-text {
    color: var(--white);
    -webkit-text-fill-color: var(--white);
}

.footer-desc {
    max-width: 500px;
    margin: 0 auto 32px;
    opacity: 0.7;
    line-height: 1.8;
    font-size: 15px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 50px;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.footer-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.5;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-image {
        order: -1;
    }
    
    .about-text .section-title {
        text-align: center;
    }
    
    .about-text .section-title::after {
        margin: 20px auto 0;
    }
    
    .hero h1 {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 8px;
        box-shadow: var(--shadow-lg);
        border-radius: 0 0 var(--radius) var(--radius);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a {
        padding: 12px 20px;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-desc {
        font-size: 15px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    
    .features,
    .about,
    .services,
    .team,
    .testimonials,
    .contact {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 16px 60px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .btn {
        padding: 14px 28px;
        font-size: 15px;
    }
    
    .service-card,
    .team-card,
    .testimonial-card,
    .contact-qrcode {
        padding: 32px 24px;
    }
    
    .contact-qrcode {
        padding: 32px 24px;
    }
    
    .features,
    .about,
    .services,
    .team,
    .testimonials,
    .contact {
        padding: 60px 0;
    }
    
    .feature-card {
        padding: 32px 24px;
    }
    
    .qrcode-placeholder {
        width: 180px;
        height: 180px;
    }
}

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

/* 选中文本样式 */
::selection {
    background: var(--primary-color);
    color: var(--white);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}