:root {
    --bg-color: #0a0a0a;
    --text-color: #e0e0e0;
    --accent-color: #00f2ff; /* 科技蓝 */
    --secondary-color: #888;
    --card-bg: rgba(255, 255, 255, 0.05);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: block;
}

.dot {
    color: var(--accent-color);
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.7;
}

.nav-links a:hover, .nav-links a.active {
    opacity: 1;
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at 50% 50%, rgba(0, 242, 255, 0.05) 0%, transparent 50%);
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    font-weight: 800;
}

.highlight {
    background: linear-gradient(90deg, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.3);
}

/* Founders Section */
.founders {
    padding: 5rem 5%;
    background: #0f0f0f;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.founders h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.section-desc {
    color: var(--secondary-color);
    margin-bottom: 3rem;
}

.logo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    align-items: center;
}

.logo-item {
    background: #fff; /* 改为白色背景以适应原始Logo颜色 */
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100px;
}

.logo-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.logo-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Full Screen Center (for Products & Contact) */
.full-screen-center {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px; /* Navbar height */
}

.content-box h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.content-box p {
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.email-link {
    font-size: 1.5rem;
    color: var(--accent-color);
    border-bottom: 1px solid transparent;
}

.email-link:hover {
    border-bottom-color: var(--accent-color);
}

/* Loader Animation */
.loader {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.status {
    font-family: monospace;
    color: var(--accent-color);
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #444;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .nav-links {
        display: none; /* 简化处理，移动端暂隐藏菜单 */
    }
}