*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC",sans-serif;
}

body{
    background:#000;
    color:#fff;
    overflow-x:hidden;
}

/* 首页封面 */

.landing{
    height:100vh;
    background:
    linear-gradient(rgba(0,0,0,.45),rgba(0,0,0,.75)),
    url('https://images.unsplash.com/photo-1495474472287-4d71bcdd2085?q=80&w=1800') center/cover;
    display:flex;
    justify-content:center;
    align-items:center;
    flex-direction:column;
    text-align:center;
}

.landing h1{
    font-size:100px;
    margin-bottom:20px;
    letter-spacing:4px;
}

.landing p{
    color:#ddd;
    font-size:24px;
    margin-bottom:40px;
}

.enter-btn{
    padding:18px 45px;
    border-radius:60px;
    background:white;
    color:black;
    text-decoration:none;
    font-size:18px;
    font-weight:600;
    transition:.35s;
}

.enter-btn:hover{
    transform:scale(1.06);
}

/* 正式页面 */

nav{
    position:fixed;
    top:0;
    width:100%;
    height:75px;
    background:rgba(0,0,0,.72);
    backdrop-filter:blur(20px);
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:0 60px;
    z-index:999;
}

.logo{
    font-size:24px;
    font-weight:700;
}

nav ul{
    display:flex;
    list-style:none;
    gap:30px;
}

nav a{
    color:white;
    text-decoration:none;
    transition:.3s;
}

nav a:hover{
    color:#999;
}

.page-header{
    height:60vh;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    background-size:cover;
    background-position:center;
    position:relative;
}

.page-header::before{
    content:'';
    position:absolute;
    inset:0;
    background:rgba(0,0,0,.45);
}

.page-header h1{
    position:relative;
    z-index:1;
    font-size:72px;
}

.content{
    padding:100px 10%;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:30px;
}

.card{
    background:#111;
    border:1px solid #222;
    border-radius:30px;
    overflow:hidden;
    transition:.35s;
}

.card:hover{
    transform:translateY(-8px);
    box-shadow:0 15px 40px rgba(255,255,255,.08);
}

.card img{
    width:100%;
    height:240px;
    object-fit:cover;
}

.card-content{
    padding:30px;
}

.card-content h2{
    margin-bottom:15px;
}

.card-content p{
    color:#bbb;
    line-height:1.8;
}

.menu-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:30px;
}

.menu-btn{
    height:220px;
    border-radius:35px;
    overflow:hidden;
    position:relative;
    text-decoration:none;
}

.menu-btn img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:.4s;
}

.menu-btn:hover img{
    transform:scale(1.08);
}

.menu-btn span{
    position:absolute;
    left:30px;
    bottom:30px;
    font-size:34px;
    font-weight:700;
    color:white;
}

footer{
    padding:50px;
    text-align:center;
    color:#666;
}

@media(max-width:768px){

.landing h1{
    font-size:58px;
}

.page-header h1{
    font-size:48px;
}

nav{
    padding:0 20px;
}

nav ul{
    gap:18px;
}

}