:root {
    --primary-red: #dc3545;
    --dark-red: #c82333;
    --light-red: #f8d7da;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}
.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -15px;
    margin-right: -15px;
}
.col-lg-8, .col-lg-4, .col-md-6, .col-md-4, .col-md-3, .col-sm-6 {
    padding-left: 15px;
    padding-right: 15px;
}
.col-lg-8 {
    flex: 0 0 66.666%;
    max-width: 66.666%;
}
.col-lg-4 {
    flex: 0 0 33.333%;
    max-width: 33.333%;
}
.col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
}
.col-md-4 {
    flex: 0 0 33.333%;
    max-width: 33.333%;
}
.col-md-3 {
    flex: 0 0 25%;
    max-width: 25%;
}
.col-sm-6 {
    flex: 0 0 50%;
    max-width: 50%;
}
.d-none {
    display: none;
}
.d-lg-block {
    display: block;
}
.d-flex {
    display: flex;
}
.ms-auto {
    margin-left: auto;
}
.text-center {
    text-align: center;
}
.text-white {
    color: white;
}
.text-danger {
    color: var(--primary-red);
}
.text-muted {
    color: #6c757d;
}
.mb-0 {
    margin-bottom: 0;
}
.mb-2 {
    margin-bottom: 0.5rem;
}
.mb-3 {
    margin-bottom: 1rem;
}
.mt-2 {
    margin-top: 0.5rem;
}
.mt-3 {
    margin-top: 1rem;
}
.mt-4 {
    margin-top: 1.5rem;
}
.me-2 {
    margin-right: 0.5rem;
}
.w-100 {
    width: 100%;
}
.list-unstyled {
    list-style: none;
}
.navbar {
    display: flex;
    align-items: center;
    padding: 0.8rem 0;
}
.header-nav {
    background-color: var(--primary-red);
}
.sticky-top {
    position: sticky;
    top: 0;
    z-index: 100;
}
.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}
.navbar-nav {
    display: flex;
    list-style: none;
}
.nav-link {
    color: white !important;
    font-weight: 500;
    padding: 0.8rem 1.2rem;
    text-decoration: none;
}
.nav-link:hover {
    background-color: var(--dark-red);
    border-radius: 4px;
}
.navbar-toggler {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    display: none;
}
.collapse {
    display: flex;
}
.banner {
    background: linear-gradient(to right, var(--primary-red), var(--dark-red));
    color: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
}
.banner h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}
.banner p {
    font-size: 1.2rem;
    line-height: 1.6;
}
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--primary-red);
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}
.btn:hover {
    background-color: var(--dark-red);
}
.btn-light {
    background-color: white;
    color: var(--primary-red);
}
.btn-lg {
    padding: 0.8rem 1.5rem;
    font-size: 1.2rem;
}
.btn-sm {
    padding: 0.3rem 0.8rem;
    font-size: 0.9rem;
}
.card {
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    margin-bottom: 1.5rem;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
}
.card:hover {
    transform: translateY(-5px);
}
.card-header {
    background-color: var(--light-red);
    border-bottom: 2px solid var(--primary-red);
    color: var(--dark-red);
    font-weight: bold;
    padding: 1rem;
}
.card-body {
    padding: 1.5rem;
}
.card-title {
    color: var(--primary-red);
    font-weight: bold;
    margin-bottom: 0.8rem;
}
.game-search {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}
.form-select, .form-control {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--primary-red);
    border-radius: 4px;
    font-size: 1rem;
}
.rank-list li {
    padding: 0.8rem;
    border-bottom: 1px dashed #eee;
}
.rank-list li:hover {
    background-color: var(--light-red);
}
.rank-num {
    display: inline-block;
    width: 25px;
    height: 25px;
    line-height: 25px;
    text-align: center;
    background-color: var(--primary-red);
    color: white;
    border-radius: 50%;
    margin-right: 0.5rem;
}
footer {
    background-color: var(--dark-red);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}
footer a {
    color: var(--light-red);
    text-decoration: none;
}
footer a:hover {
    color: white;
    text-decoration: underline;
}
h1, h2, h3, h4, h5 {
    font-weight: bold;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.8rem; color: var(--dark-red); }
h3 { font-size: 1.5rem; color: var(--primary-red); }
h4 { font-size: 1.3rem; }
h5 { font-size: 1.1rem; }

.icon-shield {
    width: 8rem;
    height: 8rem;
    background: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0id2hpdGUiPjxwYXRoIGQ9Ik0xMiAxM2M0Ljk3MSAwIDktMS45MTUgOS00VjVsLTktMy05IDN2NGMwIDIuMDg1IDQuMDI5IDQgOSA0em0wIDFjLTUuNTIyIDAtMTAgMi4wMTAtMTAgNC41VjE5bDEwIDMgMTAtM3YtMy41YzAtMi40OS00LjQ3OC00LjUtMTAtNC41eiIvPjwvc3ZnPg==") no-repeat center;
}
.icon-gamepad {
    width: 2rem;
    height: 2rem;
    margin: 0 auto;
    background: url("data:image/svg+xml;base64,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") no-repeat center;
}
.icon-star, .icon-check, .icon-puzzle, .icon-gift, .icon-trophy, .icon-headset, .icon-bell, .icon-qq, .icon-wechat, .icon-mail, .icon-time {
    display: inline-block;
    width: 1.2rem;
    height: 1.2rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}
.icon-check {
    background: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0iI2RjMzU0NSI+PHBhdGggZD0iTTkgMTYuMTc0bC00LjE3OS00LjE3OS0xLjQxNCAxLjQxNEw5IDE5IDIxLjI1IDYuNzRsLTEuNDE0LTEuNDE0eiIvPjwvc3ZnPg==") no-repeat center;
}

@media (max-width: 992px) {
    .col-lg-8, .col-lg-4 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .d-lg-block {
        display: none;
    }
}
@media (max-width: 768px) {
    .banner h1 { font-size: 2rem; }
    .card { margin-bottom: 1rem; }
    .col-md-4, .col-md-3 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .navbar-toggler {
        display: block;
    }
    .collapse {
        display: none;
        width: 100%;
    }
    .navbar-nav {
        flex-direction: column;
        width: 100%;
    }
}