/* 顶部导航栏 - 由 intro.html 与 authRequired.html 共用 */
.landing-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    padding: 0;
    border: 0;
    background: #ffffff;
    box-shadow: 0px 0px 12px 0px rgba(0, 0, 0, 0.12);
    z-index: 100;
    display: block;
}

.landing-header .header-container {
    width: 1280px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.landing-header .logo {
    display: flex;
    align-items: center;
}

.landing-header .logo img {
    height: 32px;
}

.landing-header .header-right {
    display: flex;
    align-items: center;
}

.landing-header .login-btn {
    width: 80px;
    height: 32px;
    background: #3171ff;
    color: #fff;
    font-size: 14px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.3s;
}

.landing-header .login-btn:hover {
    opacity: 0.8;
}