/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量定义 - 浅色模式 */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-card: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --gradient-silver: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%);
    --gradient-bronze: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
}

/* 深色模式 */
[data-theme="dark"] {
    --primary-color: #60a5fa;
    --secondary-color: #93c5fd;
    --accent-color: #fbbf24;
    --success-color: #34d399;
    --danger-color: #f87171;
    --text-primary: #e5e5e5;
    --text-secondary: #a3a3a3;
    --text-light: #737373;
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --border-color: #262626;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.6), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.6), 0 4px 6px -4px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6), 0 8px 10px -6px rgb(0 0 0 / 0.5);
}

/* 基础样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* 主题切换按钮 */
.theme-toggle {
    background: transparent;
    border: none;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-left: 1rem;
    opacity: 0.6;
}

.theme-toggle:hover {
    opacity: 1;
    transform: scale(1.1);
}

.theme-icon-svg {
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-icon-svg {
    transform: rotate(20deg);
    color: var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background: var(--bg-primary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-link.active::after {
    width: 80%;
}

/* 成员搜索链接特殊样式 */
.nav-link.search-link {
    background: var(--gradient-primary);
    color: white !important;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    position: relative;
    box-shadow: var(--shadow-md);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link.search-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white !important;
    opacity: 0.95;
}

.nav-link.search-link.active {
    background: var(--gradient-primary);
    color: white !important;
    box-shadow: var(--shadow-xl);
}

.nav-link.search-link.active::after {
    display: none;
}

/* 查看所有榜单下拉菜单 */
.rankings-dropdown {
    position: relative;
    display: inline-block;
}

.rankings-dropdown-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: inherit;
    font-family: inherit;
}

.rankings-dropdown-btn:hover,
.rankings-dropdown-btn.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.rankings-dropdown-btn::after {
    content: '▼';
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.rankings-dropdown-btn.active::after {
    transform: rotate(180deg);
}

.rankings-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 1000;
    display: none;
    overflow: hidden;
    animation: fadeInDown 0.3s ease;
}

.rankings-dropdown-menu.show {
    display: block;
}

.rankings-dropdown-item {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border-color);
}

.rankings-dropdown-item:last-child {
    border-bottom: none;
}

.rankings-dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding-left: 2rem;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 主要内容区域 */
.main-content {
    padding: 2rem 0;
}

/* 英雄区域 */
.hero-section {
    text-align: center;
    padding: 4rem 0;
    background: var(--bg-primary);
    border-radius: 1rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.05;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* 排行榜区域 */
.ranking-section {
    margin-bottom: 4rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* 前三名特殊展示 */
.top-three {
    display: flex;
    justify-content: center;
    align-items: end;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.rank-card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.rank-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: var(--shadow-xl);
}

.rank-card.rank-1 {
    transform: scale(1.1);
    z-index: 3;
    animation-delay: 0.2s;
}

.rank-card.rank-2 {
    z-index: 2;
    animation-delay: 0.1s;
}

.rank-card.rank-3 {
    z-index: 1;
    animation-delay: 0.3s;
}

.rank-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-silver);
}

.rank-card.rank-1::before {
    background: var(--gradient-gold);
}

.rank-card.rank-2::before {
    background: var(--gradient-silver);
}

.rank-card.rank-3::before {
    background: var(--gradient-bronze);
}

.crown {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    animation: bounce 2s infinite;
}

.rank-badge {
    position: absolute;
    top: -0.5rem;
    right: -0.5rem;
    width: 2rem;
    height: 2rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
}

.rank-card.rank-1 .rank-badge {
    background: var(--gradient-gold);
}

.rank-card.rank-2 .rank-badge {
    background: var(--gradient-silver);
}

.rank-card.rank-3 .rank-badge {
    background: var(--gradient-bronze);
}

.avatar {
    margin-bottom: 1rem;
}

.avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.rank-card.rank-1 .avatar img {
    width: 100px;
    height: 100px;
    border-color: var(--accent-color);
}

.rank-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.department {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.score {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.rank-card.rank-1 .score {
    color: var(--accent-color);
}

/* 其他排名列表 */
.ranking-list {
    background: var(--bg-card);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.rank-item {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: fadeInLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.rank-item:last-child {
    border-bottom: none;
}

.rank-item:hover {
    background: var(--bg-secondary);
    transform: translateX(0.5rem);
}

.rank-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    width: 3rem;
    text-align: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.user-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.user-info h5 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.user-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.score-info {
    display: flex;
    flex-direction: column;
    align-items: end;
    gap: 0.25rem;
}

.score-info .score {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.trend {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
}

.trend.up {
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.trend.down {
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
}

/* 历史榜单区域 */
.history-section {
    margin-bottom: 4rem;
}

.history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.history-card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.history-card:hover {
    transform: translateY(-0.25rem);
    box-shadow: var(--shadow-lg);
}

.history-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.history-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.view-detail {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.history-card:hover .view-detail {
    transform: translateX(0.25rem);
}

/* 成员计数器 */
.member-counter {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.counter-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.counter-label {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* 查看榜单按钮 */
.view-ranking-btn {
    margin-top: 3rem;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border: none;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-block;
}

.view-ranking-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.view-ranking-btn:hover::before {
    width: 300px;
    height: 300px;
}

.view-ranking-btn:hover {
    transform: translateY(-0.25rem);
    box-shadow: var(--shadow-xl);
}

.view-ranking-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

/* 榜单通知 */
.ranking-notice {
    color: var(--danger-color);
    font-weight: 500;
    margin-top: 1rem;
}

/* 榜单规则说明 */
.ranking-rules {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.ranking-rules p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.ranking-rules p:last-child {
    margin-bottom: 0;
}

/* 简化排名列表 */
.simple-ranking-list {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.ranking-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.ranking-header h4 {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* 排名分类 */
.ranking-categories {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.category-section {
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    animation: fadeInLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-section h5 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.category-section:nth-child(1) h5 {
    color: #f59e0b;
}

.category-section:nth-child(2) h5 {
    color: #8b5cf6;
}

.category-section:nth-child(3) h5 {
    color: #3b82f6;
}

.category-section:nth-child(4) h5 {
    color: #10b981;
}

.category-section:nth-child(5) h5 {
    color: #6b7280;
}

/* 吉祥物分级 - 稍微小一点 */
.category-mascot {
    padding: 1rem;
    margin-bottom: 0.75rem;
    transform: scale(0.95);
}

.category-mascot h5 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.category-mascot .member-name {
    font-size: 0.9375rem;
}

/* 成员列表 */
.member-list {
    display: block;
}

.member-item {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.member-item:last-child {
    border-bottom: none;
}

.member-name {
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.8;
}

.member-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
    animation: fadeSlideIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
}

.member-item:nth-child(1) .member-desc { animation-delay: 0.1s; }
.member-item:nth-child(2) .member-desc { animation-delay: 0.2s; }
.member-item:nth-child(3) .member-desc { animation-delay: 0.3s; }
.member-item:nth-child(4) .member-desc { animation-delay: 0.4s; }
.member-item:nth-child(5) .member-desc { animation-delay: 0.5s; }
.member-item:nth-child(6) .member-desc { animation-delay: 0.6s; }
.member-item:nth-child(7) .member-desc { animation-delay: 0.7s; }

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateX(-15px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.member-item {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.member-item:hover {
    transform: translateX(8px);
}

.member-item:hover .member-name {
    color: var(--primary-color);
    transition: color 0.3s ease;
}

/* 榜单页脚 */
.ranking-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
    text-align: center;
}

.ranking-footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.ranking-footer strong {
    color: var(--primary-color);
}

/* 规则页面样式 */
.rules-section {
    margin-bottom: 4rem;
}

.rules-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.rule-card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.rule-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.rule-card.highlight {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.rule-card.contact {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.rule-card.contact h4 {
    color: var(--primary-color);
}

.rule-text {
    color: var(--text-primary);
    line-height: 1.8;
}

.rule-text p {
    margin-bottom: 1rem;
}

.rule-text ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.rule-text li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-2rem);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(3rem) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translateY(0);
    }
    40%, 43% {
        transform: translateY(-0.5rem);
    }
    70% {
        transform: translateY(-0.25rem);
    }
    90% {
        transform: translateY(-0.125rem);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .top-three {
        flex-direction: column;
        align-items: center;
    }
    
    .rank-card.rank-1 {
        transform: none;
        order: -1;
    }
    
    .rank-item {
        padding: 1rem;
    }
    
    .rank-item:hover {
        transform: none;
    }
    
    .history-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-section {
        padding: 2rem 0;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .rank-card {
        padding: 1.5rem;
    }
    
    .user-info {
        gap: 0.75rem;
    }
    
    .user-info img {
        width: 40px;
        height: 40px;
    }
}