/* 重新设计的现代UI样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #3d5af1;
    --primary-dark: #2e44b8;
    --secondary: #22cc88;
    --dark: #0f172a;
    --light: #f8fafc;
    --gray: #64748b;
    --light-gray: #e2e8f0;
    --gradient: linear-gradient(120deg, #3d5af1, #22cc88);
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--dark);
    background-color: var(--light);
    line-height: 1.5;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

p {
    margin-bottom: 1.5rem;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    border: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* 导航栏 */
header {
    position: fixed;
    width: 100%;
    background-color: rgba(248, 250, 252, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
}

.logo span {
    display: inline-block;
    margin-left: 8px;
}

.logo-mark {
    width: 36px;
    height: 36px;
    background: var(--gradient);
    border-radius: 8px;
}

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

nav a {
    font-weight: 500;
    color: var(--dark);
    position: relative;
    transition: var(--transition);
}

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

nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

/* 英雄区域 */
.hero {
    position: relative;
    padding: 160px 0 120px;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 2.5rem;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-shape-1, .hero-shape-2 {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
}

.hero-shape-1 {
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: rgba(61, 90, 241, 0.2);
}

.hero-shape-2 {
    bottom: -150px;
    left: -150px;
    width: 600px;
    height: 600px;
    background: rgba(34, 204, 136, 0.15);
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background-color: white;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 48px;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--dark);
    line-height: 1.8;
}

/* 产品规划 */
.roadmap {
    padding: 120px 0;
    background-color: #f1f5f9;
    position: relative;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: 32px;
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 24px;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--dark);
}

.card-text {
    color: var(--gray);
    line-height: 1.7;
}

/* 页脚 */
footer {
    background-color: white;
    padding: 48px 0;
    border-top: 1px solid var(--light-gray);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.company-name {
    font-weight: 600;
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.company-name-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--gradient);
    border-radius: 50%;
    margin: 0 8px;
}

.footer-text {
    color: var(--gray);
    margin-bottom: 8px;
}

.footer-links {
    margin-top: 24px;
}

.footer-links a {
    color: var(--gray);
    margin: 0 12px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        height: auto;
        padding: 16px 0;
    }
    
    .logo {
        margin-bottom: 16px;
    }
    
    nav ul {
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.125rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content {
        padding: 32px 24px;
    }
    
    .card {
        padding: 24px;
    }
}