*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Arial,sans-serif;background:#0a0a2e;color:#eee;min-height:100vh}.navbar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:#14143cf2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.1);position:sticky;top:0;z-index:100}.nav-brand{font-size:22px;font-weight:700}.nav-back{flex:1;cursor:pointer;color:#e94560;font-size:15px}.nav-back:hover{color:#ff6b81}.nav-game-title{flex:1;text-align:center;font-size:18px;font-weight:700}.nav-links{display:flex;gap:20px}.nav-links a{color:#aaa;text-decoration:none;transition:color .2s}.nav-links a:hover{color:#fff}.nav-user{display:flex;align-items:center;gap:10px}.nav-user span{color:#aaa}.btn{padding:8px 16px;border:none;border-radius:6px;cursor:pointer;font-size:14px;transition:all .2s}.btn-login{background:#0f3460;color:#fff}.btn-login:hover{background:#1a5276}.btn-register{background:#e94560;color:#fff}.btn-register:hover{background:#c0392b}.btn-logout{background:#333;color:#fff}.hero{text-align:center;padding:60px 20px 40px}.hero h1{font-size:clamp(28px,6vw,48px);margin-bottom:12px}.hero p{color:#888;font-size:18px}.games{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;max-width:900px;margin:0 auto;padding:0 20px 60px}.game-card{background:linear-gradient(135deg,#1a1a4e,#16213e);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:30px;text-decoration:none;color:#eee;transition:all .3s;text-align:center}.game-card:hover{transform:translateY(-4px);border-color:#e94560;box-shadow:0 8px 30px #e9456033}.game-icon{font-size:48px;margin-bottom:12px}.game-name{font-size:20px;font-weight:700;margin-bottom:8px}.game-desc{color:#888;font-size:14px;line-height:1.5}.modal{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;z-index:200;align-items:center;justify-content:center}.modal.active{display:flex}.modal-content{background:#1a1a4e;border-radius:16px;padding:30px;max-width:400px;width:90%;position:relative}.modal-close{position:absolute;top:15px;right:20px;font-size:24px;cursor:pointer;color:#888}.modal h2{margin-bottom:20px;text-align:center}.form-group{margin-bottom:15px}.form-group label{display:block;margin-bottom:5px;color:#aaa;font-size:14px}.form-group input{width:100%;padding:10px 14px;border:1px solid rgba(255,255,255,.2);border-radius:8px;background:#ffffff0d;color:#fff;font-size:15px;outline:none}.form-group input:focus{border-color:#e94560}.btn-submit{width:100%;padding:12px;background:#e94560;color:#fff;border:none;border-radius:8px;font-size:16px;cursor:pointer;margin-top:5px}.btn-submit:hover{background:#c0392b}.btn-wechat{width:100%;padding:12px;background:#07c160;color:#fff;border:none;border-radius:8px;font-size:16px;cursor:pointer;margin-top:10px}.switch-link{text-align:center;margin-top:15px;color:#888;font-size:14px;cursor:pointer}.switch-link:hover{color:#e94560}.msg-error{color:#e94560;font-size:13px;margin-top:8px}.msg-success{color:#07c160;font-size:13px;margin-top:8px}.leaderboard{max-width:600px;margin:0 auto;padding:0 20px 60px}.leaderboard h2{text-align:center;margin:30px 0 20px}.lb-table{width:100%;border-collapse:collapse;background:#ffffff0d;border-radius:12px;overflow:hidden}.lb-table th,.lb-table td{padding:12px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.05)}.lb-table th{background:#ffffff1a;font-size:13px;color:#aaa}.lb-table tr:first-child td{color:gold;font-weight:700}.lb-table tr:nth-child(2) td{color:silver}.lb-table tr:nth-child(3) td{color:#cd7f32}.lb-score{text-align:right;color:#f5c518;font-weight:700}.game-select{text-align:center;margin:20px 0}.custom-select{position:relative;display:block;text-align:left}.custom-select-trigger{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 16px;background:#1a1a4e;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:8px;font-size:15px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:border-color .2s}.custom-select-trigger:hover{border-color:#fff6}.custom-select-trigger.open{border-color:#e94560}.custom-select-arrow{font-size:10px;color:#888;transition:transform .2s}.custom-select-trigger:hover .custom-select-arrow{color:#fff}.custom-select-dropdown{position:absolute;top:100%;left:0;right:0;margin-top:4px;background:#1a1a4e;border:1px solid rgba(255,255,255,.2);border-radius:8px;overflow:hidden;z-index:10;box-shadow:0 8px 24px #0000004d}.custom-select-option{padding:10px 16px;cursor:pointer;transition:background .15s;font-size:15px;color:#ccc}.custom-select-option:hover{background:#ffffff1a;color:#fff}.custom-select-option.selected{color:#e94560;font-weight:700;background:#e945601a}.toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%);padding:12px 24px;background:#333;color:#fff;border-radius:8px;z-index:300;animation:toastIn .3s}.toast.success{background:#07c160}.toast.error{background:#e94560}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.avatar-wrap{position:relative;cursor:pointer}.avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;background:#0f3460;color:#fff;border:2px solid rgba(255,255,255,.15);transition:border-color .2s}.avatar:hover{border-color:#e94560}.avatar-guest{background:#1a1a4e;color:#666;font-size:18px}.user-popover{display:none;position:absolute;top:46px;right:0;background:#1a1a4e;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:20px;min-width:180px;z-index:200;box-shadow:0 8px 30px #0006}.user-popover.active{display:block}.popover-avatar{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;background:#e94560;color:#fff;margin:0 auto 10px}.popover-name{text-align:center;font-size:16px;font-weight:700;margin-bottom:4px}.popover-username{text-align:center;font-size:13px;color:#888;margin-bottom:16px}.popover-logout{display:block;width:100%;padding:10px;background:#333;color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;text-align:center}.popover-logout:hover{background:#e94560}.popover-login{display:block;width:100%;padding:10px;background:#e94560;color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;text-align:center;text-decoration:none}.lb-card{cursor:pointer}.lb-card .lb-table{font-size:13px}.lb-card .lb-table th,.lb-card .lb-table td{padding:8px 12px}.lb-card .lb-preview{max-height:200px;overflow:hidden}.lb-card .lb-more{color:#e94560;font-size:13px;margin-top:8px}.game-header{width:100%;max-width:600px;padding:12px 20px;display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap}.game-header button{padding:8px 20px;font-size:14px;border:none;border-radius:8px;background:#0f3460;color:#fff;cursor:pointer}.game-header button:hover{background:#1a5276}.game-header button.pauseBtn{background:#f39c12}.game-header button.pauseBtn:hover{background:#e67e22}.game-header button.restartBtn{background:#e94560}.game-header button.restartBtn:hover{background:#c0392b}.game-header .score-display{font-size:16px;color:#f5c518;margin-left:10px}.game-header .score-display span{color:#fff;font-size:20px;font-weight:700}.game-area{display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}canvas{display:block;background:#16213e;border:2px solid #0f3460;border-radius:6px}#msg{color:#aaa;margin-top:10px;font-size:14px}.prompt-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;z-index:300;align-items:center;justify-content:center}.prompt-overlay.active{display:flex}.prompt-box{background:#1a1a4e;border-radius:16px;padding:30px;max-width:360px;width:90%;text-align:center}.prompt-box h2{margin-bottom:12px;font-size:20px}.prompt-box p{color:#aaa;font-size:14px;margin-bottom:20px;line-height:1.6}.prompt-box button{padding:10px 24px;background:#e94560;color:#fff;border:none;border-radius:8px;font-size:15px;cursor:pointer}.prompt-box button:hover{background:#c0392b}.snake-page canvas{width:min(400px,95vw,calc(100vh - 200px));aspect-ratio:1/1}.tetris-page canvas{width:min(250px,95vw,calc((100vh - 220px)/2));aspect-ratio:1/2}@media (max-width: 600px){.navbar{padding:10px 15px}.nav-links{gap:12px}.nav-links a{font-size:13px}.btn{padding:6px 12px;font-size:13px}.hero{padding:40px 15px 20px}.games{grid-template-columns:1fr;padding:0 15px 40px}.game-card{padding:20px}.lb-table th,.lb-table td{padding:8px 10px;font-size:13px}.game-area{padding:5px}.snake-page canvas{width:min(90vw,calc(100vh - 200px));aspect-ratio:1/1}.tetris-page canvas{width:min(90vw,calc((100vh - 220px)/2));aspect-ratio:1/2}}