@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Noto+Sans+KR:wght@300;400;700&display=swap');
    :root { 
      --app-height: 100dvh; 
      --handle-height: 34px; 
    }
    body { margin: 0; background: #000; overflow: hidden; color: white; font-family: 'Noto Sans KR', sans-serif; height: var(--app-height); }
    #root { width: 100%; height: var(--app-height); position: relative; }
    .orbitron { font-family: 'Orbitron', sans-serif; }
    .glass { background: rgba(10, 15, 30, 0.85); backdrop-filter: blur(25px); -webkit-backdrop-filter: blur(25px); border: 1px solid rgba(255, 255, 255, 0.12); }
    .menu-fade-container { mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent); -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent); }
    
    .info-sheet { position: absolute; bottom: 160px; left: 0; width: 100%; z-index: 200; border-radius: 32px 32px 0 0; transform: translateY(calc(100% + 160px)); transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1); max-height: calc(var(--app-height) - 280px); overflow-y: auto; pointer-events: none; opacity: 0; }
    .info-sheet.open { transform: translateY(0); pointer-events: auto; opacity: 1; }
    
    @media (max-width: 768px) {
      .info-sheet { display: block; } 
    }

    @media (max-height: 500px) and (orientation: landscape) {
        .info-sheet {
            display: none !important;
            visibility: hidden !important;
            opacity: 0 !important;
            pointer-events: none !important;
            transform: translateY(100%) !important;
        }
    }

    @media (min-width: 768px) {
      .info-sheet {
        left: auto;
        right: 20px;
        width: 450px;
        border-radius: 32px;
        bottom: 180px;
        transform: translateX(calc(100% + 20px));
        display: block !important;
      }
      .info-sheet.open {
        transform: translateX(0);
      }
    }

    .sim-center {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      z-index: 160;
      padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 20px));
      background: linear-gradient(to top, rgba(0, 0, 0, 0.98), rgba(0, 0, 0, 0.85));
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
      will-change: transform;
      transform: translateY(0);
    }

    .sim-center.closed {
      transform: translateY(calc(100% - env(safe-area-inset-bottom, 0px)));
    }

    @media (min-width: 768px) {
      .sim-center {
        width: 500px;
        left: 50%;
        margin-left: -250px;
        border-left: 1px solid rgba(255, 255, 255, 0.1);
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 20px 20px 0 0;
        padding: 12px 16px 20px;
      }
      .sim-center.closed {
        transform: translateY(calc(100% - 10px));
      }
    }

    .panel-handle {
      position: absolute;
      top: calc(var(--handle-height) * -1);
      left: 50%;
      transform: translateX(-50%);
      width: 72px;
      height: var(--handle-height);
      background: rgba(10, 15, 30, 0.95);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: none;
      border-radius: 16px 16px 0 0;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      z-index: 161;
      box-shadow: 0 -4px 10px rgba(0,0,0,0.3);
    }

    .handle-bar {
      width: 28px;
      height: 4px;
      background: #3b82f6;
      border-radius: 2px;
      transition: all 0.3s;
    }

    .sim-center.closed .handle-bar {
      box-shadow: 0 0 12px #3b82f6;
      transform: scaleX(1.2) rotate(0deg);
    }

    .speed-btn,
    .sys-btn {
      flex: 1;
      padding: 6px 0;
      font-family: 'Orbitron';
      font-size: 9px;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.8);
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 6px;
      transition: all 0.2s;
    }

    .active-blue {
      background: #3b82f6 !important;
      border-color: #60a5fa !important;
      color: #ffffff !important;
      box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
    }

    .no-scrollbar::-webkit-scrollbar {
      display: none;
    }

    input[type="range"] {
      -webkit-appearance: none;
      width: 100%;
      height: 2px;
      margin: 10px 0;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 1px;
    }

    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: #3b82f6;
      border: 2px solid #ffffff;
      cursor: pointer;
      box-shadow: 0 0 5px rgba(0,0,0,0.5);
    }

    .nasa-container {
      position: relative;
      width: 100%;
      min-height: 180px;
      margin-top: 20px;
      background: #050505;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 24px;
      overflow: hidden;
    }

    .nasa-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      opacity: 0;
      transition: opacity 0.5s;
    }

    .nasa-img.loaded {
      opacity: 1;
    }

    .text-overlay {
      position: absolute;
      inset: 0;
      z-index: 10;
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      background: linear-gradient(
        to bottom right,
        rgba(0, 0, 0, 0.85) 0%,
        rgba(0, 0, 0, 0.4) 50%,
        transparent 100%
      );
    }

    .data-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
      margin-top: 12px;
    }

    .data-card {
      padding: 10px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: 10px;
    }

    .data-label {
      font-size: 9px;
      font-weight: bold;
      text-transform: uppercase;
      color: rgba(255, 255, 255, 0.5);
    }

    .data-value {
      margin-top: 2px;
      font-family: 'Orbitron';
      font-size: 12px;
      color: #60a5fa;
    }

    .help-modal {
      position: fixed;
      inset: 0;
      z-index: 2000;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      background: rgba(0, 0, 0, 0.8);
      backdrop-filter: blur(10px);
    }

    .help-content {
      position: relative;
      width: 100%;
      max-width: 400px;
      background: rgba(15, 23, 42, 0.95);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 24px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
      max-height: 60vh;
      display: flex;
      flex-direction: column;
      overflow: hidden;
    }

    .help-header {
      padding: 16px 24px 16px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-shrink: 0;
    }

    .help-body {
      padding: 0 24px 24px 24px;
      overflow-y: auto;
      flex-grow: 1;
    }

    .help-footer {
      padding: 10px 10px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(15, 23, 42, 0.98);
      flex-shrink: 0;
    }

    .inapp-banner {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 3000;
      display: flex;
      align-items: center;
      justify-content: flex-end;
      padding: 10px 16px;
      background: #3b82f6;
      color: #ffffff;
      font-size: 11px;
      font-weight: 700;
      border-bottom: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

    .inapp-text {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      white-space: nowrap;
    }

    .full-loading {
      position: fixed;
      inset: 0;
      z-index: 9999;
      background: #000;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      transition: opacity 1s ease-out;
    }
    .full-loading.fade-out {
      opacity: 0;
      pointer-events: none;
    }
    .loading-logo {
      font-family: 'Orbitron', sans-serif;
      font-size: 24px;
      font-weight: 900;
      color: #3b82f6;
      letter-spacing: 0.2em;
      margin-bottom: 40px;
      animation: pulse 2s infinite ease-in-out;
    }
    .loading-bar-container {
      width: 200px;
      height: 2px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 1px;
      overflow: hidden;
      margin-bottom: 12px;
    }
    .loading-bar-fill {
      height: 100%;
      background: #3b82f6;
      width: 0%;
      transition: width 0.3s ease;
      box-shadow: 0 0 10px #3b82f6;
    }
    .loading-status {
      font-family: 'Orbitron', sans-serif;
      font-size: 9px;
      color: rgba(255, 255, 255, 0.4);
      text-transform: uppercase;
      letter-spacing: 0.1em;
    }
    .loading-footer {
      position: absolute;
      bottom: 40px;
      font-family: 'Orbitron', sans-serif;
      font-size: 10px;
      color: rgba(255, 255, 255, 0.3);
      letter-spacing: 0.2em;
      text-transform: uppercase;
    }
    @keyframes pulse {
      0%, 100% { opacity: 0.5; }
      50% { opacity: 1; }
    }
        /* 앱 유도 레이어 스타일 */
    #app-install-overlay {
      display: none;
      position: fixed;
      top: 0; left: 0; width: 100%; height: 100%;
      background: #000000;
      z-index: 99999;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: #ffffff;
      padding: 20px;
    }
    .install-content { max-width: 320px; width: 100%; }
    .install-logo { font-family: 'Orbitron', sans-serif; font-size: 24px; font-weight: 900; color: #3b82f6; margin-bottom: 10px; font-style: italic; }
    .install-title { font-size: 18px; font-weight: bold; margin-bottom: 20px; line-height: 1.4; color: #f3f4f6; }
    .install-desc { font-size: 13px; color: #9ca3af; margin-bottom: 40px; line-height: 1.6; }
    .google-play-badge { width: 200px; cursor: pointer; transition: transform 0.2s; margin: 0 auto; }
    .google-play-badge:active { transform: scale(0.95); }
    .continue-web { margin-top: 30px; font-size: 12px; color: #4b5563; text-decoration: underline; cursor: pointer; }