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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;


}
a { cursor: pointer; }



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

a {
    text-decoration: none;
    color: inherit;
}

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

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 36px;
    width: auto;
}

.logo span {
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: #555;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3b82f6;
}

.download-btn {
    background-color: #3b82f6;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #2563eb;
}

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

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: #333;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.mobile-link {
    font-size: 18px;
    font-weight: 500;
    color: #555;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.mobile-download-btn {
    background-color: #3b82f6;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    margin-top: 10px;
}

/* 英雄区域样式 */
.hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-description {
    font-size: 20px;
    color: #64748b;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.primary-btn {
    background-color: #3b82f6;
    color: white;
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 18px;
    transition: background-color 0.3s ease;
}

.primary-btn:hover {
    background-color: #2563eb;
}

.secondary-btn {
    background-color: white;
    color: #3b82f6;
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 18px;
    border: 1px solid #3b82f6;
    transition: all 0.3s ease;
}

.secondary-btn:hover {
    background-color: #f0f9ff;
}

.hero-image {
    margin-top: 50px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

/* 功能区域样式 */
.features {
    padding: 100px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #1e293b;
    text-align: center;
    margin-bottom: 15px;
}

.section-description {
    font-size: 18px;
    color: #64748b;
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 30px;
    color: #3b82f6;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
}

.feature-description {
    color: #64748b;
    line-height: 1.7;
}

/* 屏幕便签区域样式 */
.sticky-notes {
    padding: 100px 0;
    background-color: #f8fafc;
}

.sticky-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.sticky-image {
    flex: 1;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

.sticky-text {
    flex: 1;
    font-size: 18px;
    color: #64748b;
    line-height: 1.8;
}

/* 媒体评价区域样式 */
.testimonials {
    padding: 100px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background-color: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.testimonial-text {
    font-size: 18px;
    color: #1e293b;
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    font-weight: 600;
    color: #3b82f6;
}

/* 下载区域样式 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    text-align: center;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 50px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: #3b82f6;
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 18px;
    transition: background-color 0.3s ease;
}

.download-btn:hover {
    background-color: #2563eb;
}

.download-btn i {
    font-size: 24px;
}

/* 关于区域样式 */
.about {
    padding: 100px 0;
}

.about-description {
    font-size: 18px;
    color: #64748b;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 20px;
    line-height: 1.8;
}

/* 页脚样式 */
.footer {
    background-color: #1e293b;
    color: white;
    padding: 70px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo img {
    height: 30px;
    width: auto;
}

.footer-logo span {
    font-size: 20px;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: #cbd5e1;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 40px;
    }
    
    .sticky-content {
        flex-direction: column;
    }
    
    .sticky-image, .sticky-text {
        flex: none;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .features-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .feature-card, .testimonial-card {
        padding: 20px;
    }
}