/* 功能特性页面样式 */
.features-hero {
    padding: 6rem 0 4rem;
    text-align: center;
    background: linear-gradient(135deg,
            rgba(99, 102, 241, 0.1) 0%,
            rgba(16, 185, 129, 0.1) 50%,
            rgba(245, 158, 11, 0.05) 100%);
}

.features-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* 核心优势亮点 */
.highlights {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.02);
}

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

.highlight-card {
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.highlight-card:hover {
    transform: translateY(-5px);
}

.highlight-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.highlight-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.highlight-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.highlight-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 核心功能区域 */
.core-features {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-title p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    padding: 2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.feature-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.news-sources {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.source-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
}

/* 本地数据处理流程 */
.data-flow {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.05);
}

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

.flow-step {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.data-security {
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
}

.security-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    flex-shrink: 0;
}

.security-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.security-content p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* 平台与AI模型支持 */
.platform-ai {
    padding: 4rem 0;
}

.platform-ai-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.platform-section,
.ai-model-section {
    padding: 2rem;
    height: 100%;
}

.platform-section h3,
.ai-model-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.platform-list,
.model-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.platform-item,
.model-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    transition: background-color 0.3s ease;
}

.platform-item:hover,
.model-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.platform-item i,
.model-icon {
    font-size: 1.5rem;
    color: var(--primary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.platform-item div,
.model-item div {
    flex-grow: 1;
}

.platform-item strong,
.model-item strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.platform-item p,
.model-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status.available {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
}

.status.planned {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.model-note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 8px;
    color: var(--primary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 技术特点区域 */
.technical-features {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.02);
}

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

.tech-item {
    padding: 2rem;
    text-align: left;
}

.tech-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.tech-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tech-item p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* CTA区域 */
.cta-section {
    padding: 4rem 0;
}

.cta-content {
    padding: 3rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
}

.cta-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* 页脚特色样式 */
.privacy-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.privacy-badges .badge {
    padding: 0.375rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.privacy-list {
    list-style: none;
    padding: 0;
    margin-top: 0.5rem;
}

.privacy-list li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    position: relative;
    padding-left: 1.25rem;
}

.privacy-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.privacy_commitment {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
}

.slide-up {
    opacity: 0;
    animation: slideUp 0.8s ease-out forwards;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .features-hero {
        padding: 4rem 0 3rem;
    }

    .features-hero h1 {
        font-size: 2.5rem;
    }

    .highlight-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .flow-steps {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .data-security {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }

    .platform-ai-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .tech-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .cta-content {
        padding: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .section-title p {
        font-size: 1rem;
    }
}

/* 移除原有的无用样式 */
.feature-list,
.tech-stats,
.stat {
    display: none;
}