.upgrade-page {
    min-height: 100vh;
    background: #f5f7fa;
}

.upgrade-hero {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.upgrade-hero .hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.upgrade-hero .hero-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.upgrade-hero .hero-content h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.upgrade-hero .hero-content p {
    font-size: 15px;
    opacity: 0.9;
}

.upgrade-container {
    max-width: 800px;
    margin: -40px auto 40px;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.update-card {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.2s ease;
}

.update-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.update-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 16px;
}

.update-date {
    width: 64px;
    height: 64px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border-radius: 12px;
    color: #fff;
    flex-shrink: 0;
}

.date-day {
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
}

.date-month {
    font-size: 12px;
    opacity: 0.9;
    margin-top: 4px;
}

.update-meta {
    flex: 1;
}

.update-meta h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0 0 8px 0;
}

.update-author {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: #999;
}

.update-author i {
    font-size: 13px;
}

.update-body p {
    font-size: 15px;
    line-height: 1.7;
    color: #555;
    margin: 0;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 16px;
}

/* 分页样式 */
.upgrade-pagination {
    max-width: 800px;
    margin: 0 auto 40px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.upgrade-pagination nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.upgrade-pagination .page-link {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 14px;
    color: #666;
    background: #fff;
    border: 1px solid #e0e0e0;
    transition: all 0.2s ease;
    text-decoration: none;
}

.upgrade-pagination .page-link:hover {
    background: #11998e;
    color: #fff;
    border-color: #11998e;
}

.upgrade-pagination .page-link.active {
    background: #11998e;
    color: #fff;
    border-color: #11998e;
}

.upgrade-pagination .page-link.prev,
.upgrade-pagination .page-link.next {
    padding: 0 12px;
}

.upgrade-pagination .page-dots {
    color: #999;
    font-size: 14px;
    padding: 0 4px;
}

.upgrade-pagination .page-info {
    font-size: 13px;
    color: #999;
}

@media screen and (max-width: 768px) {
    .upgrade-hero {
        height: 160px;
    }

    .upgrade-hero .hero-content h1 {
        font-size: 26px;
    }

    .upgrade-container {
        margin-top: -30px;
    }

    .update-card {
        padding: 20px;
    }

    .update-header {
        gap: 16px;
    }

    .update-date {
        width: 56px;
        height: 56px;
    }

    .date-day {
        font-size: 20px;
    }

    .date-month {
        font-size: 11px;
    }

    .update-meta h3 {
        font-size: 16px;
    }
}