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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    position: relative;
}

/* 动态背景 */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ffd89b 0%, #19547b 50%, #667eea 100%);
    opacity: 0.06;
    z-index: -1;
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { 
        transform: scale(1) rotate(0deg);
        opacity: 0.06;
    }
    50% { 
        transform: scale(1.1) rotate(5deg);
        opacity: 0.08;
    }
}

/* 导航栏 */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.1) rotate(5deg);
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ff6b6b 0%, #667eea 50%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: #667eea;
}

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

/* 主要内容 */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero 区域 */
.hero {
    text-align: center;
    padding: 6rem 2rem 8rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

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

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, rgba(102, 126, 234, 0.1) 100%);
    color: #667eea;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #ff6b6b 0%, #667eea 50%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #444;
    margin-bottom: 1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b6b 0%, #667eea 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
}

/* 功能区域 */
.features {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, transparent 0%, rgba(102, 126, 234, 0.05) 100%);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.section-subtitle {
    text-align: center;
    font-size: 1.3rem;
    color: #667eea;
    margin-bottom: 2rem;
    font-weight: 600;
}

.intro {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05) 0%, rgba(102, 126, 234, 0.05) 100%);
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.intro-text {
    font-size: 1.15rem;
    color: #555;
    line-height: 2;
    margin-top: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(255, 107, 107, 0.15);
    border-color: rgba(255, 107, 107, 0.2);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #1a1a1a;
    font-weight: 600;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
    font-size: 1rem;
}

/* 关于区域 */
.about {
    padding: 6rem 2rem;
    text-align: center;
}

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

.about-content p {
    font-size: 1.2rem;
    color: #666;
    line-height: 2;
    margin-top: 2rem;
}

/* 为什么选择窝窝 */
.why-section {
    padding: 6rem 2rem;
    background: white;
}

.why-content {
    max-width: 1200px;
    margin: 0 auto;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.why-card {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05) 0%, rgba(102, 126, 234, 0.05) 100%);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.why-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 107, 107, 0.3);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.1);
}

.why-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.why-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1a1a1a;
    font-weight: 600;
}

.why-card p {
    color: #666;
    line-height: 1.8;
}

/* CTA 区域 */
.cta-section {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #ff6b6b 0%, #667eea 50%, #764ba2 100%);
    text-align: center;
    color: white;
}

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

.cta-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.cta-note {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* 页脚 */
footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.footer-slogan {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-links {
    display: contents;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-column h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.footer-column a:hover {
    color: #ff6b6b;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 2rem;
}

.social-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #667eea;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .brand-name {
        font-size: 1.2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }

    .footer-column {
        align-items: center;
    }
    
    .features-grid,
    .why-grid {
        grid-template-columns: 1fr;
    }

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

    .cta-title {
        font-size: 2.2rem;
    }

    .cta-subtitle {
        font-size: 1.2rem;
    }
}