/* === 全局设置 === */
body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    background: #f5f6fa;
    color: #333;
}

/* === 导航栏 === */
/* 导航条全屏黑色背景 */
/* 导航条全屏黑色背景 */
.navbar {
    width: 100%;
    background: #1e1e2f; /* 黑色背景全屏 */
    display: flex;
    justify-content: center; /* 居中内部容器 */
}

/* 内部内容容器，控制最大宽度和左右边距 */
.navbar-inner {
    max-width: 1600px;       /* 内容最大宽度，和页脚一致 */
    width: 100%;
    padding: 0 20px;         /* 左右内边距，防止贴边 */
    display: flex;
    justify-content: space-between;
    align-items: center;     /* 上下居中 */
    height: 60px;
}

.navbar-inner .brand {
    color: #fff;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.navbar-inner .nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.navbar-inner .nav-links a {
    color: #ddd;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.3s;
}

.navbar-inner .nav-links a:hover {
    color: #fff;
}


/* === Hero 区域 ===
.hero {
    background: linear-gradient(135deg, #2b5876, #4e4376);
    color: white;
    text-align: center;
    padding: 6rem 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.hero .btn-group {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}
*/
.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    color: white;
    transition: background 0.3s;
}

.btn-primary {
    background: #ff6b6b;
}

.btn-primary:hover {
    background: #ff4d4d;
}

.btn-secondary {
    background: #4dabf7;
}

.btn-secondary:hover {
    background: #339af0;
}

.btn-dark {
    background: #495057;
}

.btn-dark:hover {
    background: #343a40;
}

/* === 内容区 === */
.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h2 {
    margin-bottom: 1rem;
}

/* === 表单 === */
form label {
    font-weight: bold;
    margin-bottom: 0.5rem;
    display: block;
}

form input, form textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1.2rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
}

form button {
    width: 100%;
}

/* === 页脚新风格 === */
.footer {
    background: #1a1a2e;
    color: #ccc;
    padding-top: 3rem;
    font-size: 0.95rem;
}

.footer a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: #ff6b6b;
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.footer-col {
    flex: 1 1 200px;
}

.footer-col h5 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col ul li {
    margin-bottom: 0.6rem;
}

.footer-col ul li a {
    font-size: 0.95rem;
}

.footer-col .social-links {
    display: flex;
    gap: 0.8rem;
}

.footer-col .social-links li img {
    width: 80px;
    height: 80px;
}

/* 底部版权信息 */
.footer-bottom {
    border-top: 1px solid #333;
    padding: 1rem 0;
    font-size: 0.85rem;
    color: #888;
    text-align: center;
}

.footer-bottom a {
    color: #888;
    margin-left: 0.5rem;
}

.footer-bottom a:hover {
    color: #ff6b6b;
}
/* 提示框 alert-info */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    max-width: 700px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.alert-info {
    background-color: #d1ecf1; /* 浅蓝背景 */
    color: #0c5460;            /* 深蓝文字 */
    border: 1px solid #bee5eb;
}