/*!
 * 项目名称: 星瀚元图书馆集群管理系统
 * Copyright (c) 2026 广州星瀚元计算机科技有限公司. All rights reserved.
 * 
 * 本源代码为商业专有软件，未经授权禁止复制、分发、反编译。
 * 公司官网:http://www.xinghy.cn
 * 授权咨询电话:18922497946
 * 授权咨询邮箱:wuxing2722@qq.com
 * @version 1.0
 * @date 2026-09-21
 */
/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #f8f9fa 0%, #f1f5f9 100%);
    color: #334155;
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, Helvetica, sans-serif;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(14, 165, 233, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    z-index: -1;
}

/* 标题区域 */
.header-area {
    padding: 2rem 0;
    position: relative;
    overflow: hidden;
    background: white;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.header-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #0ea5e9, #8b5cf6, #10b981);
}

.platform-title {
    font-size: 2.6rem;
    font-weight: 700;
    background: linear-gradient(90deg, #0ea5e9, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-align: center;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    position: relative;
    display: inline-block;
}

.platform-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 4px;
    background: linear-gradient(90deg, transparent, #0ea5e9, #8b5cf6, transparent);
    border-radius: 4px;
}

.platform-subtitle {
    text-align: center;
    color: #64748b;
    font-size: 1.2rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2rem;
    opacity: 0.9;
}

/* 统计指示器 */
.stats-indicator {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #0ea5e9;
}

.stat-label {
    font-size: 0.9rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 导航卡片区域 */
.navigation-grid {
    padding: 2rem 0 5rem;
}

.section-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1e293b;
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #0ea5e9, transparent);
    border-radius: 3px;
}

.navigation-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1.8rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.navigation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #0ea5e9, #8b5cf6);
}


.navigation-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.15);
    border-color: #bae6fd;
}

.navigation-card:hover::after {
    opacity: 1;
}

.navigation-card:hover .nav-icon {
    transform: scale(1.2) rotate(5deg);
    background: linear-gradient(135deg, #0ea5e9, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
}

.navigation-card:hover .nav-title {
    color: #0ea5e9;
}

.nav-icon {
    font-size: 3.5rem;
    margin-bottom: 0;
    display: block;
    background: linear-gradient(135deg, #64748b, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
    transition: color 0.3s;
}

.nav-description {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 1.2rem;
}

.navigation-card:hover .nav-url {
    background: #eff6ff;
    border-color: #bae6fd;
    color: #0ea5e9;
}

/* 访问按钮 */
.visit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.2rem;
    padding: 0.6rem 1.8rem;
    background: linear-gradient(135deg, #0ea5e9, #8b5cf6);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.visit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.visit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(14, 165, 233, 0.3);
    color: white;
    text-decoration: none;
}

.visit-btn:hover::before {
    left: 100%;
}

/* 分类标签 */
.category-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: #eff6ff;
    color: #0ea5e9;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid #bae6fd;
}

/* 底部信息 */
.footer-area {
    text-align: center;
    color: #64748b;
    padding: 2.5rem 0;
    background: white;
    border-top: 1px solid #e2e8f0;
    margin-top: 14rem;
}

.footer-text {
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
}

.footer-link {
    color: #64748b;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-link:hover {
    color: #0ea5e9;
    text-decoration: none;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    color: #0ea5e9;
    text-decoration: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    z-index: 1000;
    border: 1px solid #e2e8f0;
}

.back-to-top.show {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    background: #0ea5e9;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.3);
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .platform-title {
        font-size: 2.8rem;
    }

    .nav-icon {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .platform-title {
        font-size: 2.2rem;
    }

    .platform-subtitle {
        font-size: 1rem;
    }

    .nav-icon {
        font-size: 2.5rem;
    }

    .nav-title {
        font-size: 1.1rem;
    }

    .navigation-card {
        padding: 1.5rem;
    }

    .stats-indicator {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 1.6rem;
    }
}

@media (max-width: 576px) {
    .platform-title {
        font-size: 1.8rem;
    }

    .header-area {
        padding: 2.5rem 0 1.5rem;
    }

    .navigation-grid {
        padding: 2rem 0 3rem;
    }

    .nav-icon {
        font-size: 2.2rem;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

.page {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.page .header-area {
    flex: 0 0 110px;
}

.page main{
    flex: 1 0 auto;
}

.page footer {
    flex: 0 0 68px;
}