* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

:root {
    --bg: #0f172a;
    --card: #1e293b;
    --primary: #6366f1;
    --text: #f1f5f9;
    --subtext: #94a3b8;
    --success: #10b981;
}

body {
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 40px 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

/* 头部 */
.header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--subtext);
    margin-bottom: 20px;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.stat-item {
    background: var(--card);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--subtext);
}

/* 公告 */
.notice {
    background: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--primary);
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 25px;
    color: var(--subtext);
    font-size: 14px;
}

/* 标签切换 */
.tab-group {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 30px;
}

.tab {
    padding: 10px 24px;
    background: var(--card);
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 15px;
}

.tab.active {
    background: var(--primary);
    color: #fff;
}

/* 站点列表 */
.site-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.site-list.hidden {
    display: none;
}

.site-item {
    background: var(--card);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    transition: transform 0.2s ease;
}

.site-item:hover {
    transform: translateY(-3px);
}

.rank {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.site-info {
    flex: 1;
}

.site-name {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 4px;
}

.site-desc {
    font-size: 13px;
    color: var(--subtext);
}

.btn-visit {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    transition: background 0.2s ease;
}

.btn-visit:active {
    background: var(--success);
}

/* 页脚 */
.footer {
    text-align: center;
    margin-top: 50px;
    color: var(--subtext);
    font-size: 13px;
}