/* 年龄提示组件 */
.age-notice {
    background: linear-gradient(to right, var(--danger-color), var(--danger-light));
    color: var(--white);
    text-align: center;
    padding: 15px;
    margin-bottom: 30px;
    border-radius: var(--border-radius);
    font-weight: bold;
    font-size: 18px;
    box-shadow: var(--shadow);
    animation: pulse 2s infinite;
}

/* 页面头部 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
}

.header h1 {
    color: var(--secondary-color);
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.header p {
    color: var(--secondary-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* 特色功能区域 */
.features-section {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
    justify-content: center;
}

.feature {
    background-color: var(--white);
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 200px;
    max-width: 300px;
}

.feature-icon {
    background-color: var(--primary-color);
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* 版本卡片 */
.version-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-light);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), transparent);
}

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

.card-popular {
    border: 2px solid var(--primary-color);
}

.card-popular::before {
    content: "热门推荐";
    position: absolute;
    top: 10px;
    right: -30px;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 5px 30px;
    font-size: 12px;
    font-weight: bold;
    transform: rotate(45deg);
    z-index: 1;
}

.card-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
}

.card-title h2 {
    color: var(--secondary-color);
    font-size: 1.5rem;
    font-weight: 700;
}

.card-date {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    white-space: nowrap;
}

.card-content {
    flex-grow: 1;
    margin-bottom: 20px;
}

.card-content ul {
    padding-left: 20px;
    margin-bottom: 20px;
}

.card-content li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 10px;
}

.card-content li::before {
    content: "▶";
    position: absolute;
    left: -15px;
    color: var(--primary-color);
    font-size: 10px;
}

/* 按钮组 */
.btn-group {
    display: flex;
    gap: 15px;
    margin-top: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
    flex: 1;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

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

/* 警告信息 */
.warnings {
    background-color: var(--warning-bg);
    border: 1px solid var(--warning-border);
    padding: 25px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.warnings h3 {
    color: var(--warning-text);
    margin-bottom: 15px;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.warnings h3::before {
    content: "⚠";
    font-size: 1.5rem;
}

.warnings p {
    margin-bottom: 10px;
    line-height: 1.7;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 25px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: var(--border-radius);
    margin-top: 30px;
    box-shadow: var(--shadow);
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--white);
    text-decoration: underline;
}

.copyright {
    margin-top: 15px;
    font-size: 14px;
    color: var(--gray);
}