:root{
  --bg: #f8f9fc;         /* 极浅的蓝灰背景，比纯白更有质感 */
  --surface: #ffffff;    
  --text: #1a1d27;       
  --dim: #6b7280;        
  --accent: #5c3cff;     /* 充满活力的电光紫 */
  --accent-light: #eeebff;
  --border: #e5e7eb;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;
  line-height:1.5;overflow-x:hidden;}
a{color:inherit;text-decoration:none}
.wrap{max-width:1400px;margin:0 auto;padding:0 24px;}

/* ==================== 顶部导航 ==================== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,0.9);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--border);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo{font-weight:900;font-size:24px;color:var(--text);letter-spacing:-0.5px;
  background:linear-gradient(135deg, var(--accent), #ff00ff);
  -webkit-background-clip:text;color:transparent;}
.logo span{color:var(--text);-webkit-text-fill-color:var(--text);}

.header-actions{display:flex;align-items:center;gap:16px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-icon{position:absolute;left:12px;font-size:14px;color:#9ca3af;}
.search-box input{width:280px;padding:10px 16px 10px 36px;border-radius:12px;
  border:1px solid var(--border);background:var(--bg);font-size:14px;
  transition:all 0.2s;outline:none;}
.search-box input:focus{width:320px;background:#fff;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light);}
.btn-random{padding:10px 20px;background:var(--accent);color:#fff;font-weight:700;
  border-radius:12px;font-size:14px;transition:all 0.2s;box-shadow:0 4px 12px rgba(92,60,255,0.3);cursor:pointer;border:none;}
.btn-random:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(92,60,255,0.4);}

/* ==================== 核心双栏布局 ==================== */
.app-layout{display:flex;align-items:flex-start;gap:32px;padding-top:32px;padding-bottom:60px;}

/* 左侧边栏 */
.sidebar{flex:0 0 240px;position:sticky;top:104px;}
.sidebar-section{margin-bottom:32px;}
.sidebar-section h3{font-size:13px;color:var(--dim);margin:0 0 12px 8px;font-weight:700;}
.nav-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px;}
.nav-list a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  color:var(--dim);font-weight:600;font-size:15px;transition:all 0.15s;}
.nav-list a .icon{font-size:16px;}
.nav-list a .count{margin-left:auto;font-size:12px;background:#e5e7eb;color:var(--dim);
  padding:2px 8px;border-radius:10px;}
.nav-list a:hover{background:var(--surface);color:var(--text);box-shadow:0 2px 8px rgba(0,0,0,0.04);}
.nav-list a.active{background:var(--accent-light);color:var(--accent);font-weight:800;}
.nav-list a.active .count{background:var(--accent);color:#fff;}

.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;padding-left:8px;}
.tag{padding:6px 12px;background:var(--surface);border:1px solid var(--border);
  border-radius:8px;font-size:13px;font-weight:600;color:var(--dim);transition:all 0.15s;}
.tag:hover{background:var(--accent-light);color:var(--accent);border-color:var(--accent-light);}

/* 右侧主区域 */
.main-area{flex:1;min-width:0;}
.toolbar{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px;}
.page-title{font-size:24px;font-weight:900;margin:0;letter-spacing:-0.5px;}
.recommend-tip{font-size:13px;color:var(--accent);background:var(--accent-light);padding:4px 10px;border-radius:10px;font-weight:600;}
.sort-options{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--dim);font-weight:600;}
.sort-options a{padding:6px 12px;border-radius:8px;transition:all 0.15s;cursor:pointer;}
.sort-options a:hover{background:var(--surface);color:var(--text);}
.sort-options a.active{background:var(--text);color:#fff;}

/* ==================== 分类/标签 Banner ==================== */
.category-banner {
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 32px;
  box-shadow: 0 4px 20px rgba(92, 60, 255, 0.05);
  border: 1px solid rgba(92, 60, 255, 0.1);
}

.cat-icon {
  font-size: 64px;
  line-height: 1;
  background: #fff;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 20px;
  box-shadow: 0 8px 24px rgba(92, 60, 255, 0.1);
}

.cat-info h1 { margin: 0 0 8px 0; color: var(--accent); }
.cat-desc { margin: 0; font-size: 15px; color: var(--dim); font-weight: 600; }

.empty-state {
  text-align: center; padding: 80px 20px;
  background: var(--surface); border-radius: 16px;
  border: 2px dashed var(--border);
}
.empty-state h2 { font-size: 24px; color: var(--text); margin-bottom: 8px; }
.empty-state p { color: var(--dim); font-size: 15px; }

/* ==================== 游戏网格与卡片 ==================== */
.grid-compact{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;}

/* 核心魔法：Hover 试玩 */
.game-card{background:var(--surface);border-radius:16px;overflow:hidden;
  transition:transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s;
  display:block;position:relative;box-shadow:0 2px 10px rgba(0,0,0,0.03);}
.game-card:hover{transform:translateY(-6px);box-shadow:0 12px 24px rgba(0,0,0,0.08);z-index:10;}

.game-thumb{aspect-ratio:16/9;overflow:hidden;position:relative;background:#e5e7eb;border-radius:16px 16px 0 0;}
.game-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease, opacity 0.3s ease; position:relative; z-index:2;}
.game-card:hover .game-thumb img{transform:scale(1.05); opacity: 0;} 

.hover-iframe-container {position: absolute; inset: 0; z-index: 1; background: #000;}
.hover-iframe-container iframe {opacity: 0; transition: opacity 0.3s;}
.game-thumb.playing .hover-iframe-container iframe {opacity: 1;}

/* 悬停时的播放按钮遮罩 */
.play-overlay {position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  z-index: 3; opacity: 0; transition: opacity 0.3s; pointer-events: none; background: rgba(0,0,0,0.2);}
.game-card:hover .play-overlay:not(.hidden) {opacity: 1;}
.play-icon {width: 48px; height: 48px; background: rgba(255,255,255,0.9); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--accent);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2); padding-left: 4px;}

/* 文字层 */
.game-card-body{position:relative; padding:16px 12px 12px; background:var(--surface); z-index:4;}
.game-card-body h3{margin:0 0 4px; font-size:16px; font-weight:800; color:var(--text);
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}
.game-meta{display:flex;justify-content:space-between;color:var(--dim);font-size:12px;font-weight:600;}
.game-meta span:first-child{color:#00b894;}

/* ==================== 详情页与分享按钮 ==================== */
.share-btn-container { margin-top: 24px; display: flex; gap: 12px; }
.btn-share { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; background: var(--accent); color: #fff; font-weight: 700; border-radius: 8px; cursor: pointer; border: none; transition: all 0.2s; }
.btn-share:hover { background: #4a2fd6; transform: translateY(-2px); }

/* ==================== 页脚 ==================== */
.site-footer{background:var(--surface);border-top:1px solid var(--border);
  padding:40px 0;color:var(--dim);font-size:14px;text-align:center;}
.footer-links a{margin:0 8px;}
.footer-links a:hover{color:var(--accent);}

/* ==================== 移动端适配 ==================== */
@media (max-width:768px){
  .header-actions .search-box{display:none;}
  .app-layout{flex-direction:column;padding-top:16px;}
  .sidebar{position:static;flex:none;width:100%;}
  .sidebar-section{margin-bottom:16px;}
  .nav-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:8px;scrollbar-width:none;}
  .nav-list a{white-space:nowrap;background:var(--surface);border:1px solid var(--border);padding:8px 16px;}
  .tag-cloud{display:none;}
  .toolbar{flex-direction:column;align-items:flex-start;gap:12px;}
  .grid-compact{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;}
  .game-card-body{padding:12px 8px 8px;}
  .game-card-body h3{font-size:14px;}
  .game-card:hover .game-thumb img{opacity: 1;} /* 移动端无 Hover，恢复显示 */
  
  .category-banner { padding: 20px; flex-direction: column; text-align: center; gap: 16px; }
  .cat-icon { width: 80px; height: 80px; font-size: 48px; }
}