/* ===== 英雄区样式 - 白色优化版 ===== */
.hero {
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
    color: var(--text-primary);
    padding: 6rem 0 5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.3s ease, color 0.3s ease;
}

/* 暗夜模式 */
[data-theme="dark"] .hero {
    background: linear-gradient(180deg, #1a1a1a 0%, #0d0d0d 100%);
    border-bottom-color: #333333;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 0, 0, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.01) 0%, transparent 50%);
    opacity: 1;
}

[data-theme="dark"] .hero::before {
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
}

.hero .container {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out;
    color: var(--text-primary);
}

.hero .subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0;
    animation: fadeInUp 0.8s ease-out 0.15s both;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-secondary);
}

.hero-actions {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

/* 英雄区按钮样式 */
.hero .btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.hero .btn-primary:hover {
    background: var(--text-secondary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .hero .btn-primary {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .hero .btn-primary:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.15);
}

.hero .btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
}

.hero .btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

[data-theme="dark"] .hero .btn-secondary {
    border-color: var(--border-color);
}

[data-theme="dark"] .hero .btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式 */
@media (max-width: 768px) {
    .hero {
        padding: 3.5rem 0 3rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .subtitle {
        font-size: 1.125rem;
        margin-bottom: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }
}