/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(30, 64, 175, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.nav-logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    text-decoration: none;
    background: linear-gradient(45deg, #fff, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

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

.nav-links a:hover {
    color: white;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: width 0.3s ease;
}

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

.nav-cta {
    background: var(--secondary);
    color: var(--dark) !important;
    padding: 12px 30px;
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: #fbbf24;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.nav-cta::after {
    display: none;
}

/* 头部区域样式 */
.header {
    background: var(--bg-gradient);
    color: white;
    padding: 180px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 极 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
    opacity: 0.3;
    z-index: 0;
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
}

.site-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 25px;
    text-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
    background: linear-gradient(45deg, #fff, #c7d2fe, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { text-shadow: 0 2px 15px rgba(255, 255, 255, 0.3); }
    100% { text-shadow: 0 4px 25px rgba(96, 165, 250, 0.5); }
}

.site-desc {
    font-size: 1.5rem;
    margin: 0 auto 50px;
    opacity: 0.9;
    max-width: 800px;
    line-height: 1.6;
    color: var(--text-lighter);
}

/* 统计区域样式 */
.stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.15);
    padding: 25px;
    border-radius: var(--border-radius-lg);
    min-width: 140px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    background: rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 8px;
    display: block;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 极.3);
    background: linear-gradient(45deg, #ffffff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.1rem;
    color: #ffffff;
    font-weight: 500;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

/* CTA按钮样式 */
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    background: var(--secondary);
    color: var(--dark);
    font-size: 1.2rem;
    font-weight: 600;
    padding: 18px 45px;
    border-radius: var(--border-radius-xl);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button.primary {
    background: white;
    color: var(--primary);
    box-shadow: 0 5px 20px rgba(255, 255, 255, 0.2);
}

.cta-button.primary:hover {
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.cta-button i {
    margin-left: 10px;
    transition: transform 0.3s;
}

.cta-button:hover i {
    transform: translateX(5px);
}