/* ===== 全局重置与基础 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #ec4899;
    --primary-dark: #db2777;
    --secondary: #8b5cf6;
    --accent: #f59e0b;
    --bg-light: #fdf2f8;
    --bg-white: #ffffff;
    --text-dark: #1e293b;
    --text-gray: #64748b;
    --text-light: #94a3b8;
    --shadow: 0 4px 20px rgba(236, 72, 153, 0.1);
    --shadow-hover: 0 8px 32px rgba(236, 72, 153, 0.2);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    background: var(--bg-light);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(236, 72, 153, 0.1);
    transition: var(--transition);
    padding: 12px 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

nav {
    display: flex;
    align-items: center;
}

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

.nav-links li a {
    padding: 8px 18px;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-gray);
    transition: var(--transition);
    position: relative;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--primary);
    background: rgba(236, 72, 153, 0.08);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.hamburger:hover {
    background: rgba(236, 72, 153, 0.08);
}

/* ===== 英雄区 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #fce4ec 0%, #f3e8ff 50%, #e0f2fe 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto 40px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(236, 72, 153, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===== 数据统计 ===== */
.stats {
    background: var(--bg-white);
    padding: 60px 0;
    border-bottom: 1px solid rgba(236, 72, 153, 0.08);
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.stat-item:hover {
    background: var(--bg-light);
    transform: translateY(-5px);
}

.stat-item i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.stat-item h3 {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* ===== 通用标题 ===== */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.4rem;
    font-weight: 700;
    position: relative;
    display: inline-block;
    margin-bottom: 12px;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 2px;
    margin: 12px auto 0;
}

.section-title p {
    color: var(--text-gray);
    font-size: 1.1rem;
    margin-top: 8px;
}

/* ===== 关于我们 ===== */
.about {
    padding: 100px 0;
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-text .btn {
    margin-top: 12px;
}

.about-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.about-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

/* ===== 特色服务 ===== */
.services {
    padding: 100px 0;
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 36px 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(236, 72, 153, 0.05);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(236, 72, 153, 0.1);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-icon i {
    font-size: 1.8rem;
    color: var(--primary);
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-card a {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.service-card a:hover {
    gap: 10px;
    color: var(--primary-dark);
}

/* ===== 专家团队 ===== */
.team {
    padding: 100px 0;
    background: var(--bg-white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(236, 72, 153, 0.05);
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.team-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--bg-light);
    transition: var(--transition);
}

.team-card:hover .team-avatar {
    border-color: var(--primary);
    transform: scale(1.05);
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.team-card .title {
    display: inline-block;
    padding: 4px 16px;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.team-card p {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.social {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    transition: var(--transition);
}

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

/* ===== 患者评价 ===== */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(135deg, #fce4ec 0%, #f3e8ff 100%);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stars {
    color: var(--accent);
    margin-bottom: 16px;
    font-size: 1rem;
}

.testimonial-card p {
    color: var(--text-gray);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.8;
}

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

.patient i {
    font-size: 2.2rem;
    color: var(--primary);
}

.patient h4 {
    font-size: 1rem;
    font-weight: 600;
}

.patient span {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===== 联系我们 ===== */
.contact {
    padding: 100px 0;
    background: var(--bg-white);
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    border-radius: var(--radius);
    background: var(--bg-light);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 4px;
}

.info-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.info-item p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

.contact-form {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    background: var(--bg-white);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(236, 72, 153, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== 页脚 ===== */
.footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-about .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-about .logo i {
    color: var(--primary);
}

.footer-about p {
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #cbd5e1;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.footer-links h4,
.footer-services h4,
.footer-qr h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

.footer-links li,
.footer-services li {
    margin-bottom: 10px;
}

.footer-links a,
.footer-services a {
    color: #94a3b8;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-services a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.qr-placeholder {
    width: 140px;
    height: 140px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.qr-placeholder:hover {
    background: rgba(255, 255, 255, 0.12);
}

.qr-placeholder i {
    font-size: 3rem;
    color: var(--primary);
}

.qr-placeholder p {
    font-size: 0.85rem;
    color: #94a3b8;
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.9rem;
    color: #64748b;
}

/* ===== 回到顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(236, 72, 153, 0.3);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(236, 72, 153, 0.4);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        border-radius: 0 0 var(--radius) var(--radius);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links li a {
        padding: 14px 20px;
        border-radius: var(--radius-sm);
        display: block;
    }

    .hamburger {
        display: block;
    }

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

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

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

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

    .qr-placeholder {
        margin: 0 auto;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        text-align: center;
        justify-content: center;
    }

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

    .stat-item {
        padding: 16px;
    }

    .stat-item h3 {
        font-size: 1.6rem;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .contact-form {
        padding: 24px;
    }
}