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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --text-light: #f1f5f9;
    --text-gray: #94a3b8;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--darker-bg);
    color: var(--text-light);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.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: bold;
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 10;
    padding: 2rem;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { filter: hue-rotate(0deg); }
    50% { filter: hue-rotate(20deg); }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    font-weight: 600;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.4);
}

/* 特性区域 */
.features {
    padding: 6rem 0;
    background: var(--dark-bg);
}

.section-title {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

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

/* 技术区域 */
.technology {
    padding: 6rem 0;
    background: var(--darker-bg);
}

.tech-grid {
    max-width: 800px;
    margin: 0 auto;
}

.tech-item {
    margin-bottom: 2rem;
}

.tech-name {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.tech-bar {
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.tech-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 1s ease;
    animation: progress-glow 2s ease-in-out infinite;
}

@keyframes progress-glow {
    0%, 100% { box-shadow: 0 0 10px rgba(99, 102, 241, 0.5); }
    50% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.8); }
}

/* 联系区域 */
.contact {
    padding: 6rem 0;
    background: var(--dark-bg);
    text-align: center;
}

.contact-text {
    font-size: 1.3rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.2rem;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.contact-icon {
    font-size: 1.5rem;
}

/* 页脚 */
.footer {
    padding: 2rem 0;
    text-align: center;
    background: var(--darker-bg);
    border-top: 1px solid rgba(99, 102, 241, 0.1);
    color: var(--text-gray);
}

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

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

    .nav-menu {
        gap: 1rem;
    }

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

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

    .contact-info {
        flex-direction: column;
        gap: 1rem;
    }
}