/* 公告模态框 - 全屏透明遮罩 + 中心缩放弹性动画（向上移动版） */
.announcement-modal-simple {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;          /* 覆盖整个视口 */
    background: transparent; /* 完全透明 */
    display: flex;
    align-items: flex-start; /* 从顶部开始排列，让模态框上移 */
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.announcement-modal-simple.active {
    opacity: 1;
    visibility: visible;
}

.announcement-modal-container {
    width: 90%;
    max-width: 480px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 20px 35px -8px rgba(0, 0, 0, 0.15), 0 5px 15px -5px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transform: scale(0.85);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin-top: 80px;      /* 桌面端默认上边距 */
}

.announcement-modal-simple.active .announcement-modal-container {
    transform: scale(1);
    opacity: 1;
}

/* 以下样式保持不变（头部、主体、底部等） */
.announcement-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px 10px;
    border-bottom: 1px solid #f0f0f0;
}

.announcement-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.2rem;
    color: #1e293b;
}

.announcement-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #f8fafc;
    border: none;
    color: #64748b;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.announcement-close:hover {
    background: #e2e8f0;
    color: #334155;
}

.announcement-body {
    padding: 20px 24px 16px;
    max-height: 350px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 #f8fafc;
}

.announcement-body::-webkit-scrollbar {
    width: 4px;
}

.announcement-body::-webkit-scrollbar-track {
    background: #f8fafc;
}

.announcement-body::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.section-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    color: #475569;
    margin-bottom: 10px;
    letter-spacing: 0.3px;
}

.focus-section {
    background: #f8fafc;
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 20px;
}

.focus-content {
    color: #1e293b;
    font-size: 0.95rem;
    line-height: 1.5;
    font-weight: 400;
    padding-left: 22px;
}

.updates-section {
    margin-bottom: 8px;
}

.updates-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.updates-list li {
    position: relative;
    padding: 8px 0 8px 24px;
    color: #334155;
    font-size: 0.9rem;
    line-height: 1.5;
    border-bottom: 1px solid #f1f5f9;
}

.updates-list li:last-child {
    border-bottom: none;
}

.updates-list li::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #4361ee;
}

.announcement-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px 20px;
    background: #ffffff;
    border-top: 1px solid #f0f0f0;
}

.announcement-date {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #64748b;
    font-size: 0.85rem;
}

.announcement-ack-btn {
    background: #4361ee;
    border: none;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 20px;
    border-radius: 40px;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(67, 97, 238, 0.2);
}

.announcement-ack-btn:hover {
    background: #3651d4;
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
}

/* 响应式适配：移动端减小上边距 */
@media (max-width: 600px) {
    .announcement-modal-container {
        margin-top: 60px;
    }
    .announcement-header {
        padding: 16px 20px 8px;
    }
    .announcement-title {
        font-size: 1.1rem;
    }
    .announcement-body {
        padding: 16px 20px 12px;
    }
    .focus-section {
        padding: 12px;
    }
    .focus-content {
        font-size: 0.9rem;
        padding-left: 20px;
    }
    .updates-list li {
        font-size: 0.85rem;
        padding: 6px 0 6px 22px;
    }
    .updates-list li::before {
        top: 12px;
    }
    .announcement-footer {
        padding: 12px 20px 16px;
    }
    .announcement-ack-btn {
        padding: 5px 16px;
        font-size: 0.85rem;
    }
}

/* 超小屏幕（手机窄屏）进一步减小上边距 */
@media (max-width: 400px) {
    .announcement-modal-container {
        margin-top: 50px;
        border-radius: 6px;
    }
    .announcement-header {
        padding: 14px 16px 6px;
    }
    .announcement-body {
        padding: 14px 16px 10px;
    }
}