/* ===== 导航组件样式 (nav-component.css) ===== */
#site-nav {
    position: fixed;
    top: 76px;
    right: 18px;
    z-index: 9999;
    width: 240px;
    min-width: 240px;          /* 加固：防止被压缩 */
    max-width: calc(100vw - 44px);
    background: rgba(12, 18, 30, 0.78);
    backdrop-filter: blur(18px) saturate(1.3);
    border-radius: 16px;
    border: 1px solid rgba(180, 200, 255, 0.06);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
    padding: 12px 14px 14px;
    pointer-events: auto;
    transition: opacity 0.25s ease;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    box-sizing: border-box;    /* 加固：统一盒模型 */
    flex-shrink: 0;           /* 加固：防止 flex 压缩 */
}
#site-nav .nav-title {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: #b0c4e0;
    margin-bottom: 6px;
    text-transform: uppercase;
    opacity: 0.6;
}
#site-nav .nav-subtitle {
    font-size: 8px;
    color: rgba(160, 180, 210, 0.5);
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: 0.02em;
}
#site-nav .nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}
#site-nav .nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 30px;
    padding: 5px 6px;
    border-radius: 10px;
    text-decoration: none;
    color: #c8d4e8;
    font-size: 10px;
    font-weight: 500;
    text-align: center;
    line-height: 1.1;
    background: rgba(30, 40, 60, 0.4);
    border: 1px solid rgba(180, 200, 255, 0.05);
    transition: all 0.2s ease;
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
#site-nav .nav-link:hover {
    transform: translateY(-1px);
    border-color: rgba(212, 184, 122, 0.25);
    background: rgba(40, 52, 76, 0.6);
    color: #f0e8d8;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
#site-nav .nav-link.active {
    background: rgba(212, 184, 122, 0.14);
    border-color: rgba(212, 184, 122, 0.36);
    color: #f0e8d8;
    font-weight: 600;
    box-shadow: inset 0 0 18px rgba(212, 184, 122, 0.05);
}

/* 移动端响应式适配 */
@media (max-width: 900px), (pointer: coarse) {
    #site-nav {
        top: auto;
        left: 12px;
        right: 12px;
        bottom: 16px;
        width: auto;
        min-width: unset;      /* 移动端取消最小宽度限制 */
        max-width: none;
        padding: 10px 12px 12px;
        backdrop-filter: blur(18px);
        border-radius: 14px;
    }
    #site-nav .nav-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 5px;
    }
    #site-nav .nav-link {
        min-height: 28px;
        font-size: 9px;
        padding: 4px 5px;
        border-radius: 8px;
    }
    #site-nav .nav-subtitle {
        font-size: 8px;
        margin-bottom: 5px;
    }
}
@media (max-width: 480px) {
    #site-nav {
        bottom: 12px;
        padding: 8px 10px 10px;
        border-radius: 12px;
    }
    #site-nav .nav-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4px;
    }
    #site-nav .nav-link {
        min-height: 24px;
        font-size: 8px;
        padding: 4px 5px;
        border-radius: 7px;
    }
}