/* ========================================
   前台公共样式 - frontend.css
   适用于所有前台页面（layout, home, contact, news等）
   ======================================== */

/* 重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全站设计令牌（与 home.css 共用） */
:root {
    --primary: #4f46e5;
    --primary-2: #7c3aed;
    --accent: #06b6d4;
    --ink: #0f172a;
    --muted: #64748b;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --line: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 10px 30px rgba(15, 23, 42, .08);
    --shadow-lg: 0 20px 50px rgba(79, 70, 229, .18);
    --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-soft: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 100%);
}

/* 基础 */
body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-menu a:hover {
    opacity: 0.8;
}

/* 页面头部横幅 */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
}

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.footer-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    text-align: left;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #667eea;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 1rem;
}
.icp-beian {
    margin: .5rem 0 0;
    font-size: .82rem;
    color: rgba(255, 255, 255, .6);
}
.icp-beian a {
    color: rgba(255, 255, 255, .75);
    text-decoration: none;
    transition: color .25s;
}
.icp-beian a:hover {
    color: #22c55e;
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }
}