/* 基础重置与字体 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
}

:root {
    --primary-gradient: linear-gradient(90deg, #6366F1, #8B5CF6);
    --light-bg: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 50%, #e5e7eb 100%);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.8);
    --text-primary: #374151;
    --text-secondary: #6b7280;
    --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

body {
    background: var(--light-bg);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* 玻璃拟态导航栏 */
nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.9);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    width: 100%;
    z-index: 100;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}
.logo {
    display: flex;
    flex-direction: row;
    gap: 8px;
}
.logo-img {
    height:50px;
}
.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #6366F1, #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #6366F1;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid #e5e7eb;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: #6366F1;
}

/* 英雄区域主内容 */
.hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 8rem 1rem 4rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #6366F1, #8B5CF6, #6366F1);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientText 3s linear infinite;
}

@keyframes gradientText {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 2rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.cta-button {
    background: linear-gradient(90deg, #6366F1, #8B5CF6);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

/* 特性部分 */
.features {
    padding: 4rem 5%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    font-weight: 700;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    font-size: 1.8rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 使用案例部分 */
.use-cases {
    padding: 4rem 5%;
    background: rgba(255, 255, 255, 0.5);
}

.cases-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.case-card {
    flex: 1;
    min-width: 300px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--card-shadow);
}

.case-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.case-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    background: var(--primary-gradient);
    color: white;
}

.case-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.case-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.case-features {
    margin-top: auto;
}

.case-features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

.case-features li i {
    color: #6366F1;
    margin-right: 0.5rem;
}

/* CTA部分 */
.cta-section {
    padding: 6rem 5%;
    text-align: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.cta-section p {
    max-width: 600px;
    margin: 0 auto 2rem;
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* 页脚 */
footer {
    padding: 4rem 5% 2rem;
    background: rgba(255, 255, 255, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.9);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
    color: var(--text-primary);
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-gradient);
}

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

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #6366F1;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    color: var(--text-primary);
}

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

/* 版权和备案信息 - 已调整 */
.copyright {
    display: flex;
    flex-direction: row;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.2;
    justify-content: center;
    align-items: end;
    gap: 10px;
}

.beian-info {

}
.beian-img {
    height: 14px;
}
.beian-info a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian-info a:hover {
    color: #6366F1;
}

.beian-separator {
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .nav-links {
        display: none;
    }

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

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

    .cases-container {
        flex-direction: column;
    }
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 100;
    border: none;
    font-size: 1.2rem;
}