/* 全站通用 页头+页脚 完整样式（含菜单动画） */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}
html, body {
    height: 100%;
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
    color: #333;
    background: #fff;
    line-height: 1.6;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航 */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid #f0f0f0;
    z-index: 9999;
    padding: 0 20px;
}
.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    color: #b40606;
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo i {
    font-size: 26px;
    color: #b40606;
    line-height: 1;
}
.nav {
    display: flex;
    gap: 36px;
}
.nav a {
    color: #666;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}
/* 菜单下划线动画 */
.nav a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: #b40606;
    transition: width 0.3s ease;
}
.nav a:hover {
    color: #b40606;
}
.nav a:hover::after {
    width: 100%;
}

/* 页脚 */
.footer {
    padding: 40px 0;
    background: #b40606;
    color: #fff;
    text-align: center;
    font-size: 14px;
}
.footer p {
    margin-bottom: 8px;
}
.footer a {
    color: #fff;
    text-decoration: none;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav { gap: 20px; }
    .logo { font-size: 20px; }
    .nav-inner { height: 60px; }
}