* { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    background: #1a1a1a;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: 'Courier New', monospace;
    overflow: hidden;
  }
  #gameContainer {
    position: relative;
    border: 3px solid #5a5a3a;
    border-radius: 8px;
    box-shadow: 0 0 40px rgba(100, 80, 0, 0.3);
  }
  canvas {
    display: block;
    background: #3a2a1a;
    cursor: crosshair;
  }
  #ui {
    position: absolute;
    top: 0; left: 0; right: 0;
    padding: 10px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
    color: #fff;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
    font-size: 16px;
    font-weight: bold;
  }
  #ui span { color: #ffd700; }
  #rankDisplay {
    display: none !important;
  }
  #rankDisplay.silver { color: #c0c0c0; }
  #rankDisplay.gold { color: #ffd700; text-shadow: 0 0 8px rgba(255,215,0,0.5); }
  #rankDisplay.platinum { color: #e5e4e2; text-shadow: 0 0 8px rgba(229,228,226,0.5); }
  #rankDisplay.diamond { color: #00ffff; text-shadow: 0 0 8px rgba(0,255,255,0.5); }
  #rankDisplay.master { color: #9d00ff; text-shadow: 0 0 10px rgba(157,0,255,0.6); }
  #rankDisplay.legend { color: #ff6600; text-shadow: 0 0 12px rgba(255,102,0,0.7); }
  #rankDisplay.god { color: #ff0000; text-shadow: 0 0 15px rgba(255,0,0,0.8); font-size: 15px; }
  /* Start screen rank display */
  .start-rank {
    font-size: 16px;
    font-weight: bold;
    margin: 8px 0;
    color: #cd7f32;
    display: inline-block;
  }
  .start-rank.bronze { color: #cd7f32; }
  .start-rank.silver { color: #c0c0c0; }
  .start-rank.gold { color: #ffd700; }
  .start-rank.platinum { color: #e5e4e2; }
  .start-rank.diamond { color: #00ffff; }
  .start-rank.master { color: #9d00ff; }
  .start-rank.legend { color: #ff6600; }
  .start-rank.god { color: #ff0000; font-size: 18px; }
  #gameOver, #victoryScreen {
    display: none;
    position: absolute;
    inset: 0;
    background: #1a1a1a;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: #fff;
    pointer-events: auto;
  }
  #gameOver { z-index: 25; }
  #victoryScreen { z-index: 25; }
  #gameOver ~ .sound-toggle, #gameOver ~ .bgm-toggle, #gameOver ~ .shop-btn, #gameOver ~ .weapon-info, #gameOver ~ #trainStats { display: none !important; }
  #victoryScreen ~ .sound-toggle, #victoryScreen ~ .bgm-toggle, #victoryScreen ~ .shop-btn, #victoryScreen ~ .weapon-info, #victoryScreen ~ #trainStats { display: none !important; }
  #gameOver h1 { font-size: 48px; color: #ff4444; margin-bottom: 10px; text-shadow: 0 0 20px rgba(255,0,0,0.5); }
  #victoryScreen h1 { font-size: 48px; color: #ffd700; margin-bottom: 10px; text-shadow: 0 0 30px rgba(255,215,0,0.5); }
  #gameOver p, #victoryScreen p { font-size: 20px; margin: 4px 0; }
  .end-btn {
    margin-top: 20px;
    padding: 12px 32px;
    font-size: 20px;
    font-family: inherit;
    border-radius: 6px;
    cursor: pointer;
    pointer-events: auto;
    transition: all 0.2s;
  }
  .end-btn:hover { transform: scale(1.05); }
  #gameOver .end-btn { background: #8b0000; color: #fff; border: 2px solid #ff4444; }
  #gameOver .end-btn:hover { background: #cc0000; }
  #victoryScreen .end-btn { background: #556b2f; color: #fff; border: 2px solid #ffd700; }
  #victoryScreen .end-btn:hover { background: #6b8e3a; }
  .menu-btn {
    margin-top: 8px;
    padding: 8px 24px;
    font-size: 14px;
    font-family: inherit;
    background: transparent;
    color: #888;
    border: 1px solid #555;
    border-radius: 4px;
    cursor: pointer;
    pointer-events: auto;
    transition: all 0.2s;
  }
  .menu-btn:hover { color: #fff; border-color: #aaa; }

  /* Login Screen */
  #loginScreen, #setPasswordScreen, #usernameScreen {
    position: absolute;
    inset: 0;
    background: #1a1a1a;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: #fff;
    z-index: 100;
  }
  #loginScreen h1, #setPasswordScreen h1, #usernameScreen h1 {
    font-size: 42px;
    color: #ffd700;
    text-shadow: 0 0 30px rgba(255,215,0,0.4);
    margin-bottom: 30px;
  }
  .login-box {
    background: rgba(255,255,255,0.05);
    padding: 30px 40px;
    border-radius: 12px;
    border: 1px solid #444;
    display: flex;
    flex-direction: column;
    gap: 15px;
    min-width: 280px;
  }
  .login-box input {
    padding: 12px 16px;
    font-size: 16px;
    border: 2px solid #555;
    border-radius: 6px;
    background: #222;
    color: #fff;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
  }
  .login-box input:focus {
    border-color: #ffd700;
  }
  .login-box input::placeholder {
    color: #888;
  }
  .login-btn {
    padding: 12px 24px;
    font-size: 16px;
    background: #5a4a2a;
    color: #ffd700;
    border: 2px solid #8a7a4a;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
    margin-top: 10px;
  }
  .login-btn:hover {
    background: #7a6a4a;
    border-color: #ffd700;
  }
  .login-hint {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #888;
    margin-top: 5px;
  }
  .forgot-link {
    color: #66aaff;
    text-decoration: none;
    cursor: pointer;
  }
  .forgot-link:hover {
    color: #88ccff;
    text-decoration: underline;
  }
  .forgot-hint {
    background: rgba(255,215,0,0.1);
    border: 1px solid #8a7a4a;
    border-radius: 6px;
    padding: 12px;
    font-size: 14px;
    color: #ffd700;
    margin-top: 10px;
    text-align: center;
  }
  .set-pwd-desc {
    color: #aaa;
    font-size: 14px;
    text-align: center;
    margin-bottom: 5px;
  }
  .error-msg {
    color: #ff6666;
    font-size: 13px;
    text-align: center;
    min-height: 20px;
  }

  #startScreen {
    position: absolute;
    inset: 0;
    background: #1a1a1a;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: #fff;
  }
  #startScreen h1 {
    font-size: 52px;
    color: #ffd700;
    text-shadow: 0 0 30px rgba(255,215,0,0.4);
    margin-bottom: 8px;
  }
  #startScreen .sub { font-size: 16px; color: #aaa; margin-bottom: 30px; }
  /* User info */
  .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 5px 0;
  }
  #usernameDisplay {
    color: #8aa84a;
    font-size: 14px;
    font-weight: bold;
  }
  #logoutBtn {
    padding: 4px 12px;
    font-size: 12px;
    font-family: inherit;
    background: transparent;
    color: #888;
    border: 1px solid #555;
    border-radius: 4px;
    cursor: pointer;
  }
  #logoutBtn:hover {
    color: #fff;
    border-color: #aaa;
  }
  #startScreen .controls {
    background: rgba(255,255,255,0.05);
    padding: 20px 32px;
    border-radius: 8px;
    text-align: center;
    line-height: 1.8;
    font-size: 14px;
    color: #ccc;
  }
  #startScreen .controls kbd {
    background: #333;
    border: 1px solid #555;
    padding: 2px 8px;
    border-radius: 3px;
    font-family: inherit;
    color: #fff;
  }
  .start-bgm-row {
    margin-top: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 15px;
    color: #aaa;
  }
  .start-bgm-btn {
    padding: 4px 16px;
    font-size: 14px;
    font-family: inherit;
    background: #3a3a2a;
    color: #888;
    border: 1px solid #555;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
  }
  .start-bgm-btn:hover { border-color: #aaa; color: #fff; }
  .start-bgm-btn.on { background: #3a5a2a; color: #8aa84a; border-color: #8aa84a; }
  .mode-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 14px;
  }
  .mode-btn {
    padding: 8px 22px;
    font-size: 15px;
    font-family: inherit;
    background: #3a3a2a;
    color: #aaa;
    border: 1px solid #555;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
  }
  .mode-btn:hover { border-color: #aaa; color: #fff; }
  .mode-btn.active { background: #556b2f; color: #ffd700; border-color: #ffd700; }
  .mode-btn.train { background: #2a3a4a; }
  .mode-btn.train.active { background: #2a5a7a; color: #88ddff; border-color: #88ddff; }
.ai-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 10px;
}
.ai-btn {
  padding: 6px 12px;
  font-size: 13px;
  font-family: inherit;
  background: #3a2a2a;
  color: #aaa;
  border: 1px solid #555;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 50px;
}
.ai-btn:hover { border-color: #aaa; color: #fff; }
.ai-btn.active { background: #4a3a5a; color: #d4aaff; border-color: #d4aaff; }
.ai-btn.active#aiTeammateLow { background: #5a3a2a; color: #ffaa88; border-color: #ff8866; }
.ai-btn.active#aiTeammateMid { background: #4a3a5a; color: #d4aaff; border-color: #aa88ff; }
.ai-btn.active#aiTeammateHigh { background: #3a5a3a; color: #88ffaa; border-color: #66ff88; }
  #startScreen { z-index: 30; }
  /* Hide game UI elements when overlays are active */
  #startScreen ~ .sound-toggle,
  #startScreen ~ .bgm-toggle,
  #startScreen ~ .shop-btn,
  #startScreen ~ .weapon-info,
  #startScreen ~ #trainStats,
  #startScreen ~ .touch-zoom,
  #startScreen ~ #ui,
  #startScreen ~ #touchZoomBtn { display: none !important; }
  /* Also hide UI elements during login, register, and username screens */
  #loginScreen ~ .sound-toggle,
  #loginScreen ~ .bgm-toggle,
  #loginScreen ~ .shop-btn,
  #loginScreen ~ .weapon-info,
  #loginScreen ~ #trainStats,
  #loginScreen ~ .touch-zoom,
  #loginScreen ~ #ui,
  #loginScreen ~ #touchZoomBtn { display: none !important; }
  #setPasswordScreen ~ .sound-toggle,
  #setPasswordScreen ~ .bgm-toggle,
  #setPasswordScreen ~ .shop-btn,
  #setPasswordScreen ~ .weapon-info,
  #setPasswordScreen ~ #trainStats,
  #setPasswordScreen ~ .touch-zoom,
  #setPasswordScreen ~ #ui,
  #setPasswordScreen ~ #touchZoomBtn { display: none !important; }
  #usernameScreen ~ .sound-toggle,
  #usernameScreen ~ .bgm-toggle,
  #usernameScreen ~ .shop-btn,
  #usernameScreen ~ .weapon-info,
  #usernameScreen ~ #trainStats,
  #usernameScreen ~ .touch-zoom,
  #usernameScreen ~ #ui,
  #usernameScreen ~ #touchZoomBtn { display: none !important; }
  #trainStats {
    display: none;
    position: fixed;
    top: 44px; right: 16px;
    color: #88ddff;
    font-size: 13px;
    text-align: right;
    pointer-events: none;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
    line-height: 1.6;
  }
  #difficultySetting {
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 15px;
    color: #ddd;
  }
  #difficultySetting input {
    width: 60px;
    padding: 6px 10px;
    font-size: 16px;
    font-family: inherit;
    text-align: center;
    background: #2a2a1a;
    color: #ffd700;
    border: 2px solid #5a5a3a;
    border-radius: 4px;
    outline: none;
  }
  #difficultySetting input:focus { border-color: #ffd700; }
  #difficultySetting .preset {
    padding: 4px 12px;
    font-size: 13px;
    font-family: inherit;
    background: #3a3a2a;
    color: #ccc;
    border: 1px solid #5a5a3a;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
  }
  #difficultySetting .preset:hover { background: #5a5a3a; border-color: #8a8a4a; }
  #difficultySetting .preset.active { background: #556b2f; border-color: #8aa84a; color: #fff; }
  /* Level Selector */
  #levelSelector {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 12px 0;
    padding: 12px;
    background: rgba(0,0,0,0.3);
    border-radius: 8px;
    border: 1px solid #444;
  }
  #levelSelector span {
    color: #888;
    font-size: 13px;
  }
  #levelGrid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }
  .level-btn {
    padding: 8px 4px;
    font-size: 12px;
    font-family: inherit;
    background: #3a3a3a;
    color: #888;
    border: 2px solid #555;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
  }
  .level-btn:hover:not(:disabled) {
    background: #4a4a4a;
    border-color: #777;
  }
  .level-btn.unlocked {
    background: #4a5a3a;
    color: #ccc;
    border-color: #6a7a4a;
  }
  .level-btn.active {
    background: #556b2f;
    color: #fff;
    border-color: #8aa84a;
    box-shadow: 0 0 10px rgba(138,168,74,0.5);
  }
  .level-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }
  #levelInfo {
    color: #ffd700;
    font-size: 12px;
    text-align: center;
    margin-top: 4px;
  }
  #startScreen .start-btn {
    margin-top: 24px;
    padding: 14px 48px;
    font-size: 22px;
    font-family: inherit;
    background: #556b2f;
    color: #fff;
    border: 2px solid #8aa84a;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    animation: pulse 1.5s ease-in-out infinite;
  }
  #startScreen .start-btn:hover { background: #6b8e3a; transform: scale(1.05); animation: none; }
  @keyframes pulse { 0%,100% { box-shadow: 0 0 10px rgba(138,168,74,0.3); } 50% { box-shadow: 0 0 30px rgba(138,168,74,0.7); } }
  #waveInfo {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: #ffd700;
    font-size: 36px;
    font-weight: bold;
    text-shadow: 0 0 20px rgba(255,215,0,0.5);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s;
  }
  .weapon-info {
    position: fixed;
    bottom: 10px; left: 16px;
    color: #aaa;
    font-size: 13px;
    pointer-events: none;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
  }
  .sound-toggle {
    position: fixed;
    bottom: 56px; right: 16px;
    color: #888;
    font-size: 13px;
    pointer-events: auto;
    cursor: pointer;
    background: none;
    border: 1px solid #555;
    border-radius: 4px;
    padding: 2px 8px;
    font-family: inherit;
    color: #aaa;
  }
  .sound-toggle:hover { border-color: #aaa; color: #fff; }
  .bgm-toggle {
    position: fixed;
    bottom: 80px; right: 16px;
    color: #888;
    font-size: 13px;
    pointer-events: auto;
    cursor: pointer;
    background: none;
    border: 1px solid #555;
    border-radius: 4px;
    padding: 2px 8px;
    font-family: inherit;
  }
  .bgm-toggle:hover { border-color: #aaa; color: #fff; }
  .bgm-toggle.on { color: #8aa84a; border-color: #8aa84a; }
  /* Feedback Button */
  .feedback-btn {
    position: fixed;
    bottom: 104px; right: 16px;
    color: #888;
    font-size: 13px;
    pointer-events: auto;
    cursor: pointer;
    background: none;
    border: 1px solid #555;
    border-radius: 4px;
    padding: 2px 8px;
    font-family: inherit;
  }
  .feedback-btn:hover { border-color: #aaa; color: #fff; }
  /* Feedback Overlay */
  #feedbackOverlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
    z-index: 100;
  }
  .feedback-panel {
    background: #2a2a3a;
    border: 2px solid #555;
    border-radius: 12px;
    padding: 24px;
    width: 90%;
    max-width: 400px;
  }
  .feedback-panel h3 {
    color: #ffd700;
    margin: 0 0 16px 0;
    text-align: center;
  }
  .feedback-panel textarea {
    width: 100%;
    height: 120px;
    padding: 12px;
    font-size: 14px;
    font-family: inherit;
    background: #1a1a2e;
    border: 1px solid #555;
    border-radius: 6px;
    color: #fff;
    resize: none;
  }
  .feedback-panel textarea:focus {
    outline: none;
    border-color: #8aa84a;
  }
  .feedback-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
  }
  .feedback-actions button {
    flex: 1;
    padding: 10px;
    font-size: 14px;
    font-family: inherit;
    border-radius: 6px;
    cursor: pointer;
    border: none;
  }
  #feedbackSubmit {
    background: #556b2f;
    color: #fff;
  }
  #feedbackSubmit:hover { background: #6b8e3a; }
  #feedbackClose {
    background: #444;
    color: #ccc;
  }
  #feedbackClose:hover { background: #555; }
  /* Dev Notification */
  #devNotification {
    position: fixed;
    top: 16px; right: 16px;
    background: #ff4444;
    color: #fff;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: bold;
    z-index: 200;
    animation: notifPulse 1s ease-in-out infinite;
    display: none;
  }
  @keyframes notifPulse {
    0%, 100% { box-shadow: 0 0 10px rgba(255,68,68,0.5); }
    50% { box-shadow: 0 0 20px rgba(255,68,68,0.8); }
  }
  #devNotifClose {
    background: none;
    border: none;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    margin-left: 8px;
    padding: 0 4px;
  }
  .train-exit-btn {
    position: absolute;
    bottom: 58px; right: 16px;
    color: #88ddff;
    font-size: 13px;
    pointer-events: auto;
    cursor: pointer;
    background: rgba(40,60,80,0.6);
    border: 1px solid #88ddff;
    border-radius: 4px;
    padding: 4px 10px;
    font-family: inherit;
    z-index: 10;
  }
  .train-exit-btn:hover { background: rgba(60,100,140,0.8); color: #fff; }
  .shop-btn {
    position: fixed;
    top: 44px; left: 16px;
    color: #ffd700;
    font-size: 13px;
    pointer-events: auto;
    cursor: pointer;
    background: rgba(80,60,20,0.5);
    border: 1px solid #ffd700;
    border-radius: 4px;
    padding: 3px 10px;
    font-family: inherit;
    z-index: 10;
  }
  .shop-btn:hover { background: rgba(120,90,30,0.7); color: #fff; }
  #shopOverlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
    z-index: 20;
  }
  #shopOverlay.open { display: flex; }
  .shop-panel {
    background: linear-gradient(135deg, #1a1a0a, #2a2a1a);
    border: 2px solid #ffd700;
    border-radius: 12px;
    padding: 28px 36px;
    min-width: 420px;
    box-shadow: 0 0 40px rgba(255,215,0,0.15);
  }
  .shop-panel h2 {
    color: #ffd700;
    font-size: 24px;
    text-align: center;
    margin-bottom: 6px;
  }
  .shop-panel .coin {
    text-align: center;
    color: #aaa;
    font-size: 14px;
    margin-bottom: 18px;
  }
  .shop-panel .coin span { color: #ffd700; }
  .shop-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    margin: 4px 0;
    background: rgba(255,255,255,0.03);
    border: 1px solid #3a3a2a;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    color: #ccc;
    font-size: 14px;
  }
  .shop-item:hover { border-color: #8a8a4a; background: rgba(255,255,255,0.06); }
  .shop-item.bought { opacity: 0.4; cursor: default; border-color: #2a2a1a; }
  .shop-item .name { flex: 1; }
  .shop-item .desc { color: #888; font-size: 12px; flex: 1; }
  .shop-item .price { color: #ffd700; font-weight: bold; margin-left: 12px; min-width: 50px; text-align: right; }
  .shop-item .price.afford { color: #44cc44; }
  .shop-close {
    display: block;
    margin: 16px auto 0;
    padding: 8px 28px;
    font-size: 15px;
    font-family: inherit;
    background: #3a3a2a;
    color: #aaa;
    border: 1px solid #555;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
  }
  .shop-close:hover { border-color: #aaa; color: #fff; }

  /* Touch controls - simple zoom toggle */
  .touch-zoom {
    display: none;
    position: fixed;
    z-index: 20;
    bottom: 16px; right: 16px;
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: 2px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.5);
    font-size: 18px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    touch-action: none;
    align-items: center;
    justify-content: center;
  }
  .touch-zoom:active { background: rgba(255,255,255,0.2); color: #fff; }

  @media (pointer: coarse) {
    .touch-zoom { display: flex; }
    canvas { cursor: default; }
  }
  @media (max-width: 920px) {
    body { align-items: flex-start; padding-top: 0; }
    #gameContainer { border: none; border-radius: 0; }
    #ui { font-size: 11px; padding: 4px 8px; }
    .weapon-info { font-size: 10px; bottom: 4px; left: 8px; }
    #startScreen h1 { font-size: 28px; }
    #startScreen .sub { font-size: 14px; margin-bottom: 16px; }
    #startScreen .controls { padding: 10px 14px; font-size: 11px; }
    .touch-zoom { width: 40px; height: 40px; font-size: 16px; bottom: 12px; right: 12px; }
    .shop-panel { min-width: 280px; padding: 14px 16px; }
  }
  @media (max-width: 500px) {
    #startScreen h1 { font-size: 20px; }
    #startScreen .sub { font-size: 12px; margin-bottom: 12px; }
    #startScreen .controls { padding: 8px 10px; font-size: 10px; }
    #difficultySetting { flex-wrap: wrap; gap: 4px; }
    #difficultySetting input { width: 44px; font-size: 14px; }
    #difficultySetting .preset { padding: 2px 6px; font-size: 10px; }
    .start-bgm-row { font-size: 11px; margin-top: 8px; }
    .mode-btn { padding: 4px 10px; font-size: 11px; }
    #startBtn { padding: 8px 24px; font-size: 15px; margin-top: 14px; }
    .shop-panel { min-width: 240px; padding: 10px 12px; }
    .shop-panel h2 { font-size: 18px; }
    .shop-item { padding: 6px 8px; font-size: 12px; }
    #touchControls { height: 100px; }
    #touchLeft, #touchRight { width: 50px; height: 50px; font-size: 20px; }
    #touchFire { width: 56px; height: 56px; font-size: 16px; }
    #touchZoom { width: 40px; height: 40px; font-size: 14px; right: 80px; bottom: 14px; }
  }