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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    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(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo h2 {
    color: #00d4ff;
    font-size: 24px;
    font-weight: 700;
}

.nav-logo span {
    color: #888;
    font-size: 14px;
    font-weight: 300;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #00d4ff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #0099cc);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #ffffff;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页面 */
.hero {
    height: 50vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
}

.tech-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    padding: 0 20px;
    z-index: 2;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, #00d4ff, #0099cc, #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    color: #ffffff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #00d4ff;
    border: 2px solid #00d4ff;
}

.btn-secondary:hover {
    background: #00d4ff;
    color: #0a0a0a;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.floating-elements {
    position: relative;
    width: 400px;
    height: 400px;
}

.element {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 153, 204, 0.2));
    animation: float 6s ease-in-out infinite;
}

.element-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.element-2 {
    width: 150px;
    height: 150px;
    top: 50%;
    right: 20%;
    animation-delay: 2s;
}

.element-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-right: 2px solid #00d4ff;
    border-bottom: 2px solid #00d4ff;
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) rotate(45deg); }
    40% { transform: translateY(-10px) rotate(45deg); }
    60% { transform: translateY(-5px) rotate(45deg); }
}