* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0ea5e9;
    --primary-dark: #0369a1;
    --secondary-color: #10b981;
    --accent-color: #06b6d4;
    --text-color: #1e293b;
    --text-light: #64748b;
    --light-bg: #f0f9ff;
    --white: #fff;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-img {
    width: 40px !important;
    height: 40px !important;
    max-width: 40px !important;
    max-height: 40px !important;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a:hover::after {
    width: 100%;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: 0.3s;
    border-radius: 2px;
}

/* 首页横幅 + 粒子动画 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0c4a6e 0%, #0369a1 30%, #0ea5e9 60%, #10b981 100%);
    overflow: hidden;
    padding-top: 80px;
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.2) 100%);
    z-index: 2;
}

.hero-container {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
}

.hero-content {
    margin-bottom: 3rem;
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
    animation: fadeInUp 0.8s ease;
}

.hero-content .company-name {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-content .subtitle {
    font-size: 1.1rem;
    opacity: 0.85;
    animation: fadeInUp 0.8s ease 0.4s both;
}

/* 健康服务模块（首屏） */
.services-section {
    animation: fadeInUp 0.8s ease 0.6s both;
}

.services-title {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--white);
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2.5rem 1.5rem;
    border-radius: 16px;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.service-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 60px rgba(14, 165, 233, 0.3);
    background: rgba(255, 255, 255, 1);
}

.service-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    transition: transform 0.3s;
}

.service-card:hover .service-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
}

.service-icon {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.service-card h4 {
    color: var(--primary-dark);
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.6;
}

.service-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s;
}

.service-card:hover .service-link {
    color: var(--secondary-color);
}

/* 通用样式 */
section:not(.hero) {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3.5rem;
    color: var(--primary-dark);
    position: relative;
    padding-bottom: 1rem;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* 项目一览 */
.projects {
    position: relative;
    background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 50%, #f0f9ff 100%);
    overflow: hidden;
}

#projectsCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.projects-container {
    position: relative;
    z-index: 2;
}

.projects .section-title {
    color: var(--primary-dark);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.project-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(14, 165, 233, 0.1);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 165, 233, 0.3);
    background: rgba(255, 255, 255, 0.95);
}

.project-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: 50%;
}

.project-icon svg {
    width: 36px;
    height: 36px;
    color: var(--primary-color);
}

.project-card h3 {
    color: var(--primary-dark);
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.project-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 关于我们 */
.about {
    position: relative;
    background: linear-gradient(135deg, #0c4a6e 0%, #0369a1 50%, #0e7490 100%);
    overflow: hidden;
}

#aboutCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.about-container {
    position: relative;
    z-index: 2;
}

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

.about .section-title::after {
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

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

.about-text p {
    font-size: 1.1rem;
    line-height: 2;
    margin-bottom: 1rem;
    text-align: justify;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, #0c4a6e, #1e293b);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.footer-section p {
    color: var(--white);
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
}

.qr-code-img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    margin-top: 1rem;
    border: 2px solid rgba(255,255,255,0.2);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.8;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .logo-img {
        width: 32px !important;
        height: 32px !important;
        max-width: 32px !important;
        max-height: 32px !important;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        right: -100%;
        top: 60px;
        flex-direction: column;
        background: var(--white);
        width: 70%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: right 0.3s;
        gap: 1rem;
        border-radius: 0 0 0 16px;
    }

    .nav-menu.active {
        right: 0;
    }

    .hero {
        min-height: auto;
        padding: 120px 20px 60px;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content .company-name {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-card {
        padding: 2rem 1.5rem;
    }

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

    section:not(.hero) {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 1.6rem;
    }

    .hero-content .company-name {
        font-size: 1rem;
    }

    .services-title {
        font-size: 1.4rem;
    }

    .stat-number {
        font-size: 2rem;
    }
}