:root {
    --primary-color: rgb(236, 102, 2);
    --secondary-color: rgb(0, 153, 153);
    --accent-color: #f2f2f2;
    --text-color: #333;
    --light-text: #666;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background-color: #f8f9fa;
    margin: 0;
    padding: 0;
}

/* 页面容器使用Grid布局 */
.page-container {
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: 100vh;
    padding-top: 50px;
}

/* 响应式容器样式 */
.container.main-content {
    max-width: none !important;
    width: 95vw;
    margin: 0 auto;
    padding: 20px 15px 40px 15px;
}

/* 响应式网格布局 */
.responsive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    width: 100%;
}

/* 分类部分样式 */
.category-section {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    height: fit-content;
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

.category-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.category-section .category-header {
    margin-top: 0;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--secondary-color);
    flex-shrink: 0;
}

.category-section .link-group {
    margin: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.navbar {
    background-color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    height: 50px;
}

/* 导航栏搜索框样式 */
.navbar-search {
    max-width: 300px;
    width: 100%;
}

.navbar-search .input-group {
    border-radius: 6px;
    overflow: hidden;
}

.navbar-search .form-control {
    border: none;
    font-size: 0.9rem;
    height: 36px;
}

.navbar-search .input-group-text {
    border: none;
    padding: 0.375rem 0.5rem;
}

.navbar-search .form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.25);
}

.navbar-brand {
    font-weight: 600;
    color: white !important;
    font-size: 1.1rem;
}

.search-container {
    background-color: white;
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.category-header {
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 6px;
    margin-bottom: 12px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.link-card {
    transition: transform 0.2s, box-shadow 0.2s;
    margin-bottom: 8px;
    border: none;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
}

.link-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.link-card .card-body {
    padding: 10px;
}

.link-card a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: block;
    font-size: 0.9rem;
    line-height: 1.2;
}

.link-card a:hover {
    color: var(--secondary-color);
}

.link-card .card-text {
    color: var(--light-text);
    font-size: 0.75rem;
    margin-top: 3px;
    line-height: 1.2;
}

.link-icon {
    margin-right: 6px;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

footer {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 0;
    font-size: 0.85rem;
    margin-top: auto;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    margin-right: 12px;
    text-decoration: none;
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: white;
}

.hidden {
    display: none;
}

/* 响应式布局优化 */
@media (min-width: 1000px) {
    .col-lg-4 {
        flex: 0 0 25%;
        max-width: 25%;
        /* flex: 0 0 33.333333%;
                max-width: 33.333333%; */
    }
}

/* 优化搜索框样式 */
.search-container .input-group {
    max-width: 600px;
    margin: 0 auto;
}

.search-container .form-control {
    height: 38px;
}

.search-container .input-group-text {
    padding: 0 12px;
}

/* 添加平滑过渡效果 */
.link-card {
    transition: all 0.2s ease-in-out;
    opacity: 1;
}

.link-card.hidden {
    opacity: 0;
    transform: scale(0.95);
}

.category-header,
.link-group {
    transition: opacity 0.3s ease-in-out;
}

/* 无结果提示样式 */
#noResultsMessage {
    transition: opacity 0.3s ease;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式布局优化 */
@media (max-width: 991.98px) {
    .col-md-6 {
        margin-bottom: 12px;
    }

    .search-container {
        margin-bottom: 15px;
    }

    .category-header {
        margin-bottom: 10px;
    }
}

@media (max-width: 767.98px) {
    body {
        padding-top: 45px;
    }

    .navbar {
        height: 45px;
    }

    .search-container {
        padding: 10px;
    }

    .link-card .card-body {
        padding: 8px;
    }

    .category-header {
        font-size: 1rem;
    }
}

/* 超宽屏响应式设计 */
@media (min-width: 2560px) {
    .container.main-content {
        width: 98vw;
        padding: 30px 60px;
    }
    .responsive-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 24px;
    }
    .link-card {
        margin-bottom: 6px;
    }
    .category-section {
        padding: 18px;
    }
}

@media (min-width: 1920px) and (max-width: 2559px) {
    .container.main-content {
        width: 97vw;
        padding: 25px 40px;
    }
    .responsive-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 22px;
    }
}

@media (min-width: 1440px) and (max-width: 1919px) {
    .container.main-content {
        width: 96vw;
        padding: 20px 30px;
    }
    .responsive-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 20px;
    }
}

@media (min-width: 1200px) and (max-width: 1439px) {
    .responsive-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 18px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 45px;
    }

    .navbar {
        height: 45px;
        padding: 0.25rem 1rem;
    }

    .navbar-brand {
        font-size: 0.9rem;
    }

    .navbar-search {
        max-width: 200px;
    }

    .navbar-search .form-control {
        font-size: 0.85rem;
        height: 32px;
    }

    .navbar-search .input-group-text {
        padding: 0.25rem 0.4rem;
    }

    .responsive-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 15px;
    }

    .link-card .card-body {
        padding: 8px;
    }

    .category-header {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container-fluid {
        padding: 0 10px;
    }

    .navbar-search {
        max-width: 150px;
    }

    .responsive-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .category-header {
        font-size: 0.95rem;
        margin-bottom: 8px;
    }

    .link-card .card-body {
        padding: 6px;
    }

    .link-card h6 {
        font-size: 0.85rem;
        margin-bottom: 4px;
    }

    .link-card p {
        font-size: 0.75rem;
        margin-bottom: 0;
    }
}

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