/* 页面标题 */
.page-header {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary) 0%, #FF9D7B 100%);
    color: var(--white);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* 功能详情 */
.feature-detail {
    padding: 80px 0;
}

.bg-gray {
    background: var(--light-gray);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 50px;
}

.feature-icon-large {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary), #FF9D7B);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 48px;
    flex-shrink: 0;
}

.feature-header h2 {
    font-size: 36px;
    margin-bottom: 10px;
    color: var(--dark);
}

.feature-header p {
    font-size: 18px;
    color: var(--gray);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-item i {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 20px;
    display: block;
}

.feature-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--dark);
}

.feature-item ul {
    list-style: none;
    padding: 0;
}

.feature-item li {
    padding: 8px 0;
    color: var(--gray);
    position: relative;
    padding-left: 20px;
}

.feature-item li:before {
    content: "•";
    color: var(--primary);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 高亮功能 */
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.highlight-item {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.highlight-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), #FF9D7B);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--white);
    font-size: 32px;
}

.highlight-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--dark);
}

.highlight-item p {
    color: var(--gray);
    line-height: 1.8;
}

/* CTA区域 */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, #FF9D7B 100%);
    text-align: center;
    color: var(--white);
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* 服务分类列表 */
.services-list {
    padding: 60px 0;
}

.service-category {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-gray);
}

.category-header i {
    font-size: 36px;
    color: var(--primary);
}

.category-header h2 {
    font-size: 28px;
    color: var(--dark);
}

.category-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.sub-category {
    background: var(--light-gray);
    padding: 20px;
    border-radius: 8px;
}

.sub-category h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 15px;
}

.sub-category ul {
    list-style: none;
    padding: 0;
}

.sub-category li {
    padding: 8px 0;
    color: var(--dark);
    border-bottom: 1px solid #e0e0e0;
}

.sub-category li:last-child {
    border-bottom: none;
}

.category-summary {
    color: var(--gray);
    line-height: 1.8;
    font-size: 16px;
}

/* 技术栈 */
.tech-stack {
    padding: 80px 0;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.tech-item {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tech-item i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 15px;
    display: block;
}

.tech-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--dark);
}

.tech-item p {
    color: var(--gray);
    font-size: 14px;
}

/* 购买页面 */
.purchase-page {
    padding: 60px 0;
}

.purchase-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 50px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.price-summary {
    background: var(--light-gray);
    padding: 30px;
    border-radius: 10px;
    margin: 30px 0;
}

.price-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e0e0e0;
}

.price-row:last-child {
    border-bottom: none;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.price-label {
    color: var(--gray);
}

.price-value {
    color: var(--dark);
    font-weight: 600;
}