/* ===========================
   首页专属样式
   =========================== */

/* 主内容区域 */
.main-content {
    min-height: calc(100vh - 70px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

/* Hero区域 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    color: white;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-content {
    flex: 1;
    animation: fadeInLeft 0.8s ease-out;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
    line-height: 1.6;
}

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

.btn-large {
    padding: 16px 36px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 10px;
}

.hero-image {
    flex: 0 0 300px;
    animation: fadeInRight 0.8s ease-out;
}

.hero-avatar {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 8px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: transform 0.5s;
}

.hero-avatar:hover {
    transform: scale(1.05) rotate(5deg);
}

/* 功能卡片区域 */
.features-section {
    padding: 80px 0;
    background-color: #f5f7fa;
}

.section-title {
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    color: #333;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    margin: 20px auto 0;
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s;
    text-align: center;
    animation: fadeInUp 0.6s ease-out;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: white;
    transition: all 0.4s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}

.feature-description {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s;
}

.feature-link:hover {
    gap: 12px;
    color: #764ba2;
}

/* 特性介绍区域 */
.highlights-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.highlight-item {
    text-align: center;
    padding: 30px 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.highlight-item:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.highlight-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.highlight-item h4 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
}

.highlight-item p {
    font-size: 15px;
    opacity: 0.9;
}

.highlights-section .section-title {
    color: white;
}

.highlights-section .section-title::after {
    background: white;
}

/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer p {
    margin-bottom: 15px;
    font-size: 14px;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.footer-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}

/* 动画效果 */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }

    .hero-title {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        flex: 0 0 auto;
    }

    .hero-avatar {
        width: 250px;
        height: 250px;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-avatar {
        width: 200px;
        height: 200px;
    }

    .features-section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 32px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .highlights-section {
        padding: 60px 0;
    }

    .highlights-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 30px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
        width: 100%;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .hero-avatar {
        width: 150px;
        height: 150px;
    }

    .section-title {
        font-size: 26px;
    }

    .feature-card {
        padding: 30px 20px;
    }
}