/* AI 2.0时代页面特定样式 */

/* Hero区域 */
.ai-era-hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    position: relative;
    overflow: hidden;
    padding: 6rem 0 4rem;
}

.ai-era-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/pattern.svg');
    opacity: 0.1;
    z-index: 1;
}

.ai-era-hero .container {
    position: relative;
    z-index: 2;
    padding: 2rem;
}

.ai-era-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.ai-era-hero h2 {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.ai-era-hero p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 700px;
    opacity: 0.9;
}

.hero-content {
    max-width: 700px;
}

/* 对比部分 */
.comparison-section {
    padding: 6rem 0;
    background-color: var(--bg-color);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    margin: 3rem 0;
    align-items: center;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
}

.section-subtitle {
    text-align: center;
    color: var(--secondary-color);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.2rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
}

.era-comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    margin: 3rem 0;
    align-items: center;
}

.era-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

.era-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.era-card.ai1 {
    border-left: 4px solid var(--secondary-color);
}

.era-card.ai2 {
    border-left: 4px solid var(--primary-color);
}

.era-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(128, 128, 128, 0.2);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.era-card h3 i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.ai2 h3 i {
    color: var(--primary-color);
}

.era-features ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.era-features li {
    margin: 0.8rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.era-features li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

.ai2 .era-features li::before {
    color: var(--primary-color);
}

.transition-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--accent-color);
    font-size: 2rem;
}

/* 类比部分 */
.analogy-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, rgba(var(--gradient-start-rgb), 0.05) 0%, rgba(var(--gradient-end-rgb), 0.05) 100%);
}

.analogy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.analogy-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.analogy-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.analogy-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.analogy-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* 特性部分 */
.features-section {
    padding: 6rem 0;
    background-color: var(--bg-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* 影响部分 */
.impact-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, rgba(var(--gradient-start-rgb), 0.05) 0%, rgba(var(--gradient-end-rgb), 0.05) 100%);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.impact-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.impact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.impact-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.impact-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* CTA部分 */
.cta-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/pattern.svg');
    opacity: 0.1;
    z-index: 1;
}

.cta-container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.cta-text {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

/* 页脚样式 */
footer {
    background: var(--footer-bg);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: var(--secondary-color);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(128, 128, 128, 0.2);
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .era-comparison-grid {
        grid-template-columns: 1fr;
    }

    .transition-arrow {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
}

@media (max-width: 768px) {
    .ai-era-hero h1 {
        font-size: 2.5rem;
    }

    .ai-era-hero h2 {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid,
    .impact-grid,
    .analogy-grid {
        grid-template-columns: 1fr;
    }
}