.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: #3a0b1e;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--accent-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-white);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--accent-light);
}

.navbar-brand i {
    color: var(--accent-color);
    font-size: 1.75rem;
}

.navbar-brand .site-logo {
    height: 56px;
    width: auto;
    object-fit: contain;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.navbar-item {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    position: relative;
}

.navbar-item:hover {
    color: var(--accent-color);
    background: rgba(251, 191, 36, 0.15);
}

.navbar-item.active {
    background: linear-gradient(135deg, #3a0b1e 0%, #911f42 100%);
    color: var(--text-white);
    border: 1px solid var(--accent-color);
    box-shadow: 0 0 6px rgba(251, 191, 36, 0.3), 0 0 12px rgba(251, 191, 36, 0.15);
}

.navbar-item.active:hover {
    color: var(--text-white);
    box-shadow: 0 0 8px rgba(251, 191, 36, 0.4), 0 0 16px rgba(251, 191, 36, 0.2);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.lang-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--text-white);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    border-color: var(--accent-color);
    background: rgba(251, 191, 36, 0.15);
}

.lang-btn i {
    font-size: 0.875rem;
    transition: transform var(--transition-fast);
}

.lang-switcher.open .lang-btn i {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    min-width: 100%;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    overflow: hidden;
    z-index: var(--z-dropdown);
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.lang-option:hover {
    background: var(--bg-light);
    color: var(--text-primary);
}

.lang-option.active {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.navbar-toggle {
    display: none;
    padding: var(--spacing-sm);
    font-size: 1.5rem;
    color: var(--text-white);
}

#main-content {
    flex: 1;
    margin-top: 80px;
    min-height: calc(100vh - 80px - 120px);
    position: relative;
}

.footer {
    background: #3a0b1e;
    border-top: 2px solid var(--accent-color);
    color: rgba(255, 255, 255, 0.8);
    margin-top: auto;
}

.footer-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-section a:hover {
    color: var(--accent-light);
}

.footer-section .footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    background: #3a0b1e;
}

.footer-bottom .container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.footer-statement {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    line-height: 1.4;
    margin: 0;
    padding: 0;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    line-height: 1;
    margin: 0;
    padding: 0;
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    height: 100dvh; /* 动态视口高度，适配移动端浏览器地址栏 */
    max-height: -webkit-fill-available; /* iOS Safari 兼容 */
    background: var(--bg-white);
    border-left: 1px solid var(--border-color);
    z-index: var(--z-modal);
    transition: right var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-header .navbar-brand {
    color: var(--text-primary);
    max-width: calc(100% - 60px);
    font-size: 1.25rem;
}

.mobile-nav-header .navbar-brand span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mobile-nav-header .navbar-brand i {
    color: var(--accent-color);
}

.mobile-nav-header .navbar-brand .site-logo {
    height: 36px;
    flex-shrink: 0;
}

/* 彩票数字图标 - 正方形 */
.lottery-num-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25em;
    height: 1.25em;
    background: var(--text-secondary);
    color: #fff;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 700;
}

.mobile-nav-item:hover .lottery-num-icon {
    background: var(--accent-color);
}

.mobile-nav-item.active .lottery-num-icon {
    background: #fff;
    color: var(--primary-color);
}


.mobile-nav-close {
    font-size: 1.5rem;
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.mobile-nav-close:hover {
    color: var(--accent-color);
}

.mobile-nav-menu {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.mobile-nav-item {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.mobile-nav-item:hover {
    background: var(--bg-light);
    color: var(--accent-color);
}

.mobile-nav-item.active {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.mobile-nav-lang {
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom, 0px)); 
    border-top: 1px solid var(--border-color);
}

.mobile-lang-title {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.mobile-lang-options {
    display: flex;
    gap: var(--spacing-sm);
}

.mobile-lang-btn {
    flex: 1;
    padding: var(--spacing-sm);
    text-align: center;
    border-radius: var(--radius-md);
    background: var(--bg-light);
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.mobile-lang-btn:hover {
    border-color: var(--accent-color);
}

.mobile-lang-btn.active {
    background: var(--gradient-primary);
    color: var(--text-white);
}

.page-header {
    background: linear-gradient(135deg, #3a0b1e 0%, #911f42 100%);
    color: var(--text-white);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 80% 50%, rgba(255,255,255,0.18) 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.12) 0%, transparent 30%),
        radial-gradient(circle at 50% 20%, rgba(251, 191, 36, 0.2) 0%, transparent 35%);
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #FBBF24, #a82850, #911f42, #3a0b1e);
    background-size: 300% 100%;
    animation: gradient-flow 4s ease infinite;
}

@keyframes gradient-flow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.page-header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 2rem;
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.page-header h1 i {
    color: var(--text-white);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
}

.back-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    transform: translateX(-4px);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb .separator {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--primary-color);
}

.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(58, 31, 53, 0.15) 0%, rgba(158, 42, 90, 0.15) 50%, rgba(196, 30, 86, 0.15) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(158, 42, 90, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, rgba(58, 31, 53, 0.25) 0%, rgba(158, 42, 90, 0.25) 50%, rgba(196, 30, 86, 0.25) 100%);
    transform: translateY(-3px);
}

.back-to-top:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .back-to-top {
        right: 16px;
        bottom: 16px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}