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

/* 主体样式 */
body {
    background: linear-gradient(180deg, #87CEEB 0%, #FFD966 50%, #FFB380 100%);
    min-height: 100vh;
    font-family: 'PingFang SC', 'Source Han Sans CN', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: #2C3E50;
    line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: #2C3E50;
    text-decoration: none;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: #2C3E50;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #50C8C8;
}

.nav-cta {
    background: linear-gradient(135deg, #FFD966 0%, #FFB380 100%);
    color: #2C3E50;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(255, 183, 128, 0.4);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 80px;
}

.hero-content {
    max-width: 800px;
}

.hero-mascot {
    width: 200px;
    height: 200px;
    margin-bottom: 40px;
    animation: float 3s ease-in-out infinite;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 700;
    color: #2C3E50;
    margin-bottom: 20px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 24px;
    color: #2C3E50;
    opacity: 0.8;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.cta-button {
    background: linear-gradient(135deg, #FFD966 0%, #FFB380 100%);
    color: #2C3E50;
    font-weight: 600;
    font-size: 18px;
    padding: 16px 48px;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 16px rgba(255, 183, 128, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-button:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 24px rgba(255, 183, 128, 0.6);
}

.cta-button:active {
    transform: scale(0.98);
}

.secondary-button {
    background: rgba(80, 200, 200, 0.2);
    color: #2C3E50;
    font-weight: 500;
    font-size: 18px;
    padding: 16px 48px;
    border: 2px solid #50C8C8;
    border-radius: 16px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.secondary-button:hover {
    background: rgba(80, 200, 200, 0.3);
    transform: translateY(-2px);
}

/* 玻璃拟态卡片 */
.glass-card {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border-radius: 24px;
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
}

/* 功能区 */
.features-section {
    padding: 80px 20px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #2C3E50;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    color: #2C3E50;
    margin-bottom: 12px;
}

.feature-description {
    font-size: 16px;
    color: #2C3E50;
    opacity: 0.75;
    line-height: 1.6;
}

/* 用户评价区 */
.testimonials-section {
    padding: 80px 20px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    padding: 40px;
}

.testimonial-text {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
    color: #2C3E50;
}

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

.testimonial-author strong {
    font-size: 16px;
    color: #2C3E50;
}

.testimonial-author span {
    font-size: 14px;
    color: #2C3E50;
    opacity: 0.7;
}

/* CTA 区 */
.cta-section {
    padding: 80px 20px;
}

.cta-content {
    text-align: center;
    padding: 60px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #2C3E50;
}

.cta-subtitle {
    font-size: 18px;
    margin-bottom: 32px;
    color: #2C3E50;
    opacity: 0.8;
}

/* 页脚 */
.footer {
    background: rgba(44, 62, 80, 0.9);
    backdrop-filter: blur(20px);
    color: white;
    padding: 60px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto 40px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 16px;
    color: #FFD966;
}

.footer-section p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.7;
}

/* 滚动动画 */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        padding: 15px 20px;
    }

    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-mascot {
        width: 150px;
        height: 150px;
    }

    .section-title {
        font-size: 32px;
    }

    .feature-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 28px;
    }

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

    .cta-button,
    .secondary-button {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .glass-card {
        padding: 24px;
    }
}