* {
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'PingFang SC','Microsoft YaHei',sans-serif
}
body {
    background:url('../images/background.jpg') no-repeat center center fixed;
    background-size:cover;
    color:#333;
    min-height:100vh;
    display:flex;
    flex-direction:column;
    padding:20px;
    position:relative
}
.language-switcher {
    position:absolute;
    top:20px;
    right:20px;
    z-index:100
}
.lang-btn {
    background:rgba(255,255,255,0.8);
    border:1px solid rgba(0,0,0,0.2);
    color:#333;
    padding:8px 15px;
    border-radius:20px;
    font-size:14px;
    cursor:pointer;
    transition:all 0.3s;
    display:flex;
    align-items:center;
    justify-content:space-between;
    min-width:140px;
    backdrop-filter:blur(5px);
    box-shadow:0 2px 10px rgba(0,0,0,0.1)
}
.lang-btn::after {
    content:"▼";
    font-size:10px;
    margin-left:5px
}
.lang-btn:hover {
    background:rgba(255,255,255,0.9)
}
.lang-dropdown {
    display:none;
    position:absolute;
    top:100%;
    right:0;
    background:rgba(255,255,255,0.95);
    border-radius:10px;
    padding:10px 0;
    margin-top:5px;
    min-width:180px;
    box-shadow:0 5px 15px rgba(0,0,0,0.2);
    backdrop-filter:blur(10px);
    border:1px solid rgba(0,0,0,0.1)
}
.lang-dropdown.show {
    display:block;
    animation:fadeIn 0.3s
}
@keyframes fadeIn {
    from {
    opacity:0;
    transform:translateY(-10px)
}
to {
    opacity:1;
    transform:translateY(0)
}
}.lang-option {
    background:none;
    border:none;
    color:#333;
    padding:12px 20px;
    width:100%;
    text-align:left;
    cursor:pointer;
    transition:background 0.2s;
    display:flex;
    align-items:center;
    font-size:14px
}
.lang-option:hover {
    background:rgba(0,0,0,0.05)
}
.flag {
    display:inline-block;
    width:20px;
    height:15px;
    margin-right:10px;
    background-size:cover;
    background-position:center;
    border-radius:2px
}
.flag-cn {
    background-image:url('https://flagcdn.com/w40/cn.png')
}
.flag-tw {
    background-image:url('https://flagcdn.com/w40/tw.png')
}
.flag-us {
    background-image:url('https://flagcdn.com/w40/us.png')
}
.flag-pt {
    background-image:url('https://flagcdn.com/w40/pt.png')
}
.flag-id {
    background-image:url('https://flagcdn.com/w40/id.png')
}
.flag-vn {
    background-image:url('https://flagcdn.com/w40/vn.png')
}
.flag-kr {
    background-image:url('https://flagcdn.com/w40/kr.png')
}
.main-content {
    flex:1;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    padding:60px 0
}
.logo {
    width:200px;
    height:120px;
    margin-bottom:40px;
    display:flex;
    justify-content:center;
    align-items:center;
    overflow:hidden
}
.logo img {
    max-width:100%;
    max-height:100%;
    filter:drop-shadow(0 5px 15px rgba(0,0,0,0.3))
}
.function-buttons {
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:12px;
    width:100%;
    max-width:360px;
    margin-bottom:35px
}
.func-btn {
    background:rgba(128,128,128,0.3);
    border:1px solid rgba(255,255,255,0.5);
    color:rgba(255,255,255,0.8);
    padding:14px 8px;
    border-radius:10px;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:all 0.3s;
    box-shadow:0 5px 15px rgba(0,0,0,0.2);
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    letter-spacing:0.5px;
    line-height:1.4;
    backdrop-filter:blur(5px)
}
.func-btn:hover {
    transform:translateY(-3px);
    box-shadow:0 6px 16px rgba(0,0,0,0.25);
    background:rgba(128,128,128,0.5);
    color:rgba(255,255,255,1)
}
.action-buttons {
    display:flex;
    flex-direction:column;
    gap:16px;
    width:100%;
    max-width:280px;
    margin-bottom:20px
}
.action-btn {
    padding:16px 18px;
    border-radius:50px;
    font-size:17px;
    font-weight:700;
    cursor:pointer;
    transition:all 0.3s;
    border:1px solid rgba(255,255,255,0.5);
    box-shadow:0 5px 15px rgba(0,0,0,0.2);
    letter-spacing:0.8px;
    line-height:1.4;
    backdrop-filter:blur(5px)
}
.register-btn {
    background:rgba(128,128,128,0.3);
    color:rgba(255,255,255,0.8)
}
.game-btn {
    background:rgba(128,128,128,0.3);
    color:rgba(255,255,255,0.8)
}
.action-btn:hover {
    transform:translateY(-3px);
    box-shadow:0 8px 18px rgba(0,0,0,0.25);
    background:rgba(128,128,128,0.5);
    color:rgba(255,255,255,1)
}
.footer {
    text-align:center;
    padding:15px 0;
    font-size:14px;
    color:white;
    margin-top:auto;
    text-shadow:0 1px 3px rgba(0,0,0,0.5)
}
.additional-options {
    display:flex;
    justify-content:center;
    gap:12px;
    width:100%;
    max-width:320px;
    margin-top:10px
}
.option-link {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:6px;
    color:#8B4513;
    text-decoration:none;
    font-size:13px;
    font-weight:600;
    transition:all 0.3s;
    padding:10px 12px;
    border-radius:8px;
    background:linear-gradient(135deg,#d4af37 0%,#f7ef8a 100%);
    border:1px solid rgba(0,0,0,0.1);
    box-shadow:0 3px 8px rgba(0,0,0,0.1);
    flex:1;
    max-width:150px;
    letter-spacing:0.3px;
    line-height:1.4
}
.option-link:hover {
    background:linear-gradient(135deg,#e8e8e8 0%,#d8d8d8 100%);
    transform:translateY(-2px);
    box-shadow:0 4px 10px rgba(0,0,0,0.15)
}
.icon {
    font-size:16px
}
.download-icons {
    display:flex;
    gap:4px;
    margin-left:4px
}

@media (max-width:480px) {
    .function-buttons {
    grid-template-columns:1fr;
    gap:10px;
    max-width:300px
}
.func-btn,.action-btn {
    padding:12px 10px;
    font-size:14px
}
.logo {
    width:180px;
    height:100px;
    margin-bottom:30px
}
.action-buttons {
    max-width:260px;
    gap:14px
}
.additional-options {
    flex-direction:column;
    gap:8px;
    align-items:center;
    max-width:280px
}
.option-link {
    max-width:100%;
    width:100%;
    font-size:12px
}
}@media (max-width:350px) {
    .language-switcher {
    top:15px;
    right:15px
}
.lang-btn {
    min-width:120px;
    padding:6px 12px;
    font-size:13px
}
.function-buttons {
    max-width:280px
}
.action-buttons {
    max-width:240px
}
}.main-content {
    padding:50px 0 40px
}
.logo {
    margin-bottom:35px
}