:root {
      --sidebar-width: 180px;
      --sidebar-width-scale: 1;
      --menu-item-height: 84px;
      --menu-item-gap: 14px;
      --menu-item-pad-x: 16px;
      --menu-font-size: 16px;
      --menu-scale: 1;
      --menu-icon-size: 40px;
      --menu-icon-svg-size: 34px;
      --top-menu-scale: 1;
      --top-menu-btn-size: 56px;
      --top-menu-panel-min-w: 220px;
      --top-menu-font: 17px;
      --top-menu-pad: 13px 16px;
    }
    @media (min-width: 1200px) and (min-height: 700px) {
      :root {
        --sidebar-width: 200px;
        --menu-item-height: 90px;
        --menu-item-gap: 15px;
        --menu-item-pad-x: 17px;
        --menu-font-size: 18px;
        --menu-icon-size: 44px;
        --menu-icon-svg-size: 38px;
      }
    }
    @media (min-width: 2200px) and (min-height: 1300px) {
      :root {
        --sidebar-width: 220px;
        --menu-item-height: 96px;
        --menu-item-gap: 16px;
        --menu-item-pad-x: 18px;
        --menu-font-size: 20px;
        --menu-icon-size: 48px;
        --menu-icon-svg-size: 42px;
      }
    }
    html, body { height: 100%; margin: 0; background: #e8f1f8; font-family: sans-serif; }
    #app { height: 100%; display: flex; background: transparent; position: relative; }
    #sidebar { width: calc(var(--sidebar-width) * var(--sidebar-width-scale)); background: #e8f1f8; border-right: 1px solid #cddaea; display: flex; flex-direction: column; }
    .menu-item { height: var(--menu-item-height); display: flex; align-items: center; gap: var(--menu-item-gap); padding: 0 var(--menu-item-pad-x); color: #fff; font-weight: 700; font-size: calc(var(--menu-font-size) * var(--menu-scale)); letter-spacing: 0; text-shadow: 0 1px 2px rgba(0,0,0,0.15); cursor: pointer; box-sizing: border-box; }
    .menu-item .icon { width: var(--menu-icon-size); height: var(--menu-icon-size); flex: 0 0 var(--menu-icon-size); display: inline-flex; align-items: center; justify-content: center; }
    .menu-item .icon svg { width: var(--menu-icon-svg-size); height: var(--menu-icon-svg-size); display: block; }
    .menu-item .label { flex: 1; min-width: 0; line-height: 1.15; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .menu-item.active { outline: 3px solid rgba(255,255,255,0.4); outline-offset: -3px; }
    #workspace-wrap { flex: 1; position: relative; overflow: hidden; }
    #workspace-wrap::before {
      content: '';
      position: absolute;
      inset: 0;
      background: #fff url('background-main.png') center center / cover no-repeat;
      pointer-events: none;
      z-index: 0;
    }
    #workspace { height: 100%; width: 100%; background: transparent; position: relative; z-index: 1; }
    .blocklyToolboxDiv { display: none !important; }
    .blocklyFlyoutBackground { fill: #f7fbff; }
    .blocklyMainBackground { fill: rgba(255, 255, 255, 0) !important; }
    .blocklySvg, .blocklyMainBackground { touch-action: none; }
    .blocklyScrollbarVertical,
    .blocklyScrollbarHorizontal { display: none !important; }
    /* Run highlight for the simultaneous (container) block itself.
       The '>' combinator matches only this block's own path, never the
       nested child blocks' paths, so sub blocks stay unhighlighted. */
    .airgoSimulRunHighlight > .blocklyPath {
      stroke: #ff8f00 !important;
      stroke-width: 3 !important;
      filter: drop-shadow(0 0 5px rgba(255, 143, 0, 0.9)) drop-shadow(0 0 14px rgba(255, 143, 0, 0.55)) !important;
    }
    #top-menu-wrap { position: absolute; top: 10px; right: 10px; z-index: 3005; }
    #top-menu-btn { width: calc(var(--top-menu-btn-size) * var(--top-menu-scale)); height: calc(var(--top-menu-btn-size) * var(--top-menu-scale)); border: 0; border-radius: 12px; background: transparent; padding: 10px; box-sizing: border-box; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
    #top-menu-btn img { width: 100%; height: 100%; object-fit: contain; display: block; }
    #top-menu-fallback { display: none; color: #fff; font-size: calc(26px * var(--top-menu-scale)); line-height: 1; font-weight: 700; }
    #top-menu-panel { position: absolute; top: 0; right: calc(100% + 8px); min-width: calc(var(--top-menu-panel-min-w) * var(--top-menu-scale)); background: rgba(14, 38, 62, 0.97); border: 1px solid rgba(255, 255, 255, 0.14); border-radius: 12px; box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35); overflow: hidden; display: none; }
    #top-menu-panel.show { display: block; }
    .top-menu-item { width: 100%; border: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.12); background: transparent; color: #fff; font-size: calc(var(--top-menu-font) * var(--top-menu-scale)); font-weight: 700; text-align: left; padding: calc(13px * var(--top-menu-scale)) calc(16px * var(--top-menu-scale)); cursor: pointer; }
    .top-menu-item.danger { color: #ff5252; }
    .top-menu-item.disabled { color: rgba(255, 255, 255, 0.38); cursor: default; pointer-events: none; }
    .top-menu-item:last-child { border-bottom: 0; }
    .top-menu-item:active { background: rgba(255, 255, 255, 0.12); }
    #top-menu-toast { position: absolute; left: 50%; bottom: 16px; z-index: 2999; background: rgba(8, 30, 50, 0.92); color: #fff; font-size: 15px; font-weight: 700; text-align: center; padding: 10px 14px; border-radius: 10px; opacity: 0; transform: translate(-50%, 8px); pointer-events: none; transition: opacity 0.18s ease, transform 0.18s ease; white-space: nowrap; max-width: 84vw; overflow: hidden; text-overflow: ellipsis; }
    #top-menu-toast.show { opacity: 1; transform: translate(-50%, 0); }
    #block-run-timer { position: absolute; top: 18px; right: 86px; z-index: 2998; color: #ff2f2f; font-size: 42px; font-weight: 800; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35); opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity 0.12s ease, transform 0.12s ease; }
    #block-run-timer.show { opacity: 1; transform: translateY(0); }
    #run-lock-overlay { position: fixed; inset: 0; z-index: 3004; display: none; background: transparent; }
    #run-lock-overlay.show { display: block; }
    #ack-warning { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 3002; color: #ff2f2f; font-size: 30px; font-weight: 800; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3); opacity: 0; pointer-events: none; transition: opacity 0.12s ease; }
    #ack-warning.show { opacity: 1; }
#camera-busy { position: absolute; top: 26px; left: 50%; transform: translateX(-50%); z-index: 3003; color: #ffcc00; font-size: 34px; font-weight: 800; text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35); opacity: 0; pointer-events: none; transition: opacity 0.12s ease; }
#camera-busy.show { opacity: 1; }
    #usb-command-log { position: absolute; left: 0; top: 0; bottom: 0; width: 240px; z-index: 2996; display: none; flex-direction: column; background: rgba(247, 251, 255, 0.94); border-right: 1px solid #d9e3ee; box-sizing: border-box; padding: 12px 10px; pointer-events: none; }
    #usb-command-log.show { display: flex; }
    #usb-command-log-title { color: #244157; font-size: 13px; font-weight: 800; letter-spacing: 0.4px; margin: 0 0 8px; opacity: 0.82; }
    #usb-command-log-list { display: flex; flex-direction: column; gap: 8px; overflow: hidden; }
    .usb-command-log-entry { background: rgba(210, 218, 226, 0.88); color: rgba(52, 68, 82, 0.88); border-radius: 10px; padding: 9px 10px; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08); }
    .usb-command-log-entry.current { background: rgba(13, 43, 69, 0.94); color: #fff; box-shadow: 0 8px 18px rgba(0, 0, 0, 0.16); }
    .usb-command-log-entry-time { font-size: 11px; font-weight: 700; opacity: 0.72; margin-bottom: 3px; }
    .usb-command-log-entry.current .usb-command-log-entry-time { opacity: 0.78; }
    .usb-command-log-entry-text { font-size: 14px; font-weight: 800; line-height: 1.35; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    #wifi-status-pill { position: absolute; right: 14px; bottom: 14px; z-index: 2997; display: inline-flex; align-items: center; gap: 7px; padding: 8px 13px; border-radius: 999px; background: rgba(233, 241, 247, 0.95); color: #2d4d63; font-size: 14px; font-weight: 700; letter-spacing: 0.1px; pointer-events: none; user-select: none; cursor: default; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12); }
    #wifi-status-pill svg { width: 15px; height: 15px; display: block; }
    #wifi-status-pill.connected { background: rgba(32, 178, 107, 0.97); color: #fff; }
    #wifi-status-pill.disconnected { background: rgba(233, 241, 247, 0.95); color: #2d4d63; pointer-events: auto; cursor: pointer; }
    #wifi-status-pill .wifi-x { display: none; stroke: #df4b4b; stroke-width: 2.5; }
    #wifi-status-pill.disconnected .wifi-signal { opacity: 0.52; }
    #wifi-status-pill.disconnected .wifi-x { display: block; }
    #version-popup-overlay { position: absolute; inset: 0; z-index: 3010; background: rgba(4, 18, 32, 0.28); display: none; align-items: center; justify-content: center; }
    #version-popup-overlay.show { display: flex; }
    #version-popup-card { min-width: 290px; max-width: 82vw; background: rgba(11, 39, 63, 0.97); border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 14px; color: #fff; box-shadow: 0 16px 34px rgba(0, 0, 0, 0.38); padding: 20px 24px; text-align: center; }
    #version-popup-title { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
    #version-popup-version { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
    #version-popup-copyright { font-size: 14px; opacity: 0.9; margin-bottom: 14px; }
    #version-popup-lang-row { display: flex; align-items: center; justify-content: center; gap: 10px; }
    #version-popup-lang-label { font-size: 14px; font-weight: 700; opacity: 0.95; }
    #version-popup-lang-select { min-width: 124px; height: 34px; border-radius: 8px; border: 1px solid rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.12); color: #fff; font-size: 14px; font-weight: 700; padding: 0 8px; outline: none; }
    #version-popup-lang-select option { color: #0f2942; background: #fff; }
    #profile-popup-overlay { position: absolute; inset: 0; z-index: 3011; background: rgba(4, 18, 32, 0.35); display: none; align-items: center; justify-content: center; }
    #profile-popup-overlay.show { display: flex; }
    #profile-popup-card { width: min(86vw, 520px); max-height: min(80vh, 640px); background: rgba(11, 39, 63, 0.98); border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 14px; color: #fff; box-shadow: 0 16px 34px rgba(0, 0, 0, 0.38); display: flex; flex-direction: column; overflow: hidden; }
    #profile-popup-title { font-size: 20px; font-weight: 800; padding: 16px 18px 12px; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
    #profile-popup-list { flex: 1; overflow: auto; padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; }
    .profile-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: rgba(255, 255, 255, 0.08); border-radius: 10px; padding: 10px 12px; }
    .profile-meta { min-width: 0; flex: 1; }
    .profile-name { font-size: 15px; font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .profile-date { font-size: 12px; opacity: 0.85; margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .profile-actions { display: inline-flex; gap: 6px; }
    .profile-btn { border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 8px; padding: 6px 10px; background: rgba(255, 255, 255, 0.1); color: #fff; font-size: 13px; font-weight: 700; cursor: pointer; }
    .profile-btn.load { background: rgba(39, 172, 120, 0.95); border-color: rgba(39, 172, 120, 1); }
    .profile-empty { font-size: 14px; font-weight: 700; opacity: 0.9; text-align: center; padding: 22px 10px; }
    #profile-popup-actions { border-top: 1px solid rgba(255, 255, 255, 0.12); padding: 10px 12px; display: flex; justify-content: flex-end; }
    #profile-popup-close { border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 8px; min-width: 76px; height: 34px; background: rgba(255, 255, 255, 0.1); color: #fff; font-size: 14px; font-weight: 700; cursor: pointer; }
    #safety-guide-overlay {
      position: fixed;
      inset: 0;
      z-index: 12000;
      background: rgba(0, 0, 0, 0.7);
      display: none;
      align-items: center;
      justify-content: center;
      padding: 12px;
      padding-top: calc(12px + env(safe-area-inset-top));
      padding-right: calc(12px + env(safe-area-inset-right));
      padding-bottom: calc(12px + env(safe-area-inset-bottom));
      padding-left: calc(12px + env(safe-area-inset-left));
      box-sizing: border-box;
    }
    #safety-guide-overlay.show { display: flex; }
    #safety-guide-card {
      width: min(96vw, 960px);
      max-width: 960px;
      max-height: calc(100vh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
      max-height: calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
      background: rgba(10, 29, 47, 0.96);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 18px;
      color: #fff;
      box-shadow: 0 18px 40px rgba(0, 0, 0, 0.42);
      padding: clamp(14px, 2.8vh, 26px) clamp(14px, 3.2vw, 34px);
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      text-size-adjust: 100%;
      -webkit-text-size-adjust: 100%;
    }
    #safety-guide-title { margin: 0 0 clamp(10px, 2.3vh, 16px); font-size: clamp(18px, 2.6vw, 22px); font-weight: 800; text-align: center; flex: 0 0 auto; }
    #safety-guide-scroll-area { flex: 1 1 auto; min-height: 0; overflow-y: auto; overflow-x: hidden; -webkit-overflow-scrolling: touch; padding-right: 4px; margin-right: -4px; }
    #safety-guide-intro { margin: 0 0 clamp(12px, 2vh, 18px); font-size: clamp(12px, 1.7vw, 14px); line-height: 1.65; text-align: left; }
    #safety-guide-intro strong { font-weight: 800; }
    #safety-guide-section { margin: 0 0 clamp(8px, 1.5vh, 10px); font-size: clamp(14px, 2vw, 16px); font-weight: 800; }
    #safety-guide-list { margin: 0; padding-left: clamp(22px, 2.9vw, 28px); font-size: clamp(11px, 1.6vw, 13px); line-height: 1.68; }
    #safety-guide-list li { margin: 0 0 clamp(6px, 1.4vh, 10px); }
    #safety-guide-list strong { font-weight: 800; }
    #safety-guide-consent-row { margin-top: clamp(12px, 2.3vh, 24px); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; flex: 0 0 auto; }
    #safety-guide-consent-label { display: inline-flex; align-items: center; gap: 10px; flex: 1 1 420px; font-size: clamp(11px, 1.4vw, 12px); font-weight: 700; line-height: 1.45; }
    #safety-guide-checkbox { width: clamp(18px, 2.8vw, 24px); height: clamp(18px, 2.8vw, 24px); accent-color: #2f9b73; flex: 0 0 auto; }
    #safety-guide-start-btn { min-width: clamp(160px, 28vw, 210px); height: clamp(42px, 7vh, 52px); border: 0; border-radius: 12px; background: #2f9b73; color: #fff; font-size: clamp(13px, 1.8vw, 14px); font-weight: 800; cursor: pointer; white-space: nowrap; flex: 0 0 auto; }
    #safety-guide-start-btn:disabled { background: rgba(255, 255, 255, 0.2); color: rgba(255, 255, 255, 0.58); cursor: default; }
    @media (max-width: 760px), (max-height: 560px) {
      #safety-guide-card { width: min(98vw, 960px); border-radius: 14px; }
      #safety-guide-consent-label { flex-basis: 100%; }
      #safety-guide-start-btn { width: 100%; min-width: 0; }
    }
    .airgo-prompt-overlay { position: fixed; inset: 0; background: rgba(3, 15, 28, 0.45); display: none; align-items: center; justify-content: center; z-index: 10000; }
    .airgo-prompt-overlay.show { display: flex; }
    .airgo-prompt-card { width: min(86vw, 360px); border-radius: 12px; background: #14324d; box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35); padding: 16px; box-sizing: border-box; }
    .airgo-prompt-title { color: #fff; font-weight: 700; font-size: 18px; margin: 0 0 12px; }
    .airgo-prompt-message { color: #fff; font-weight: 600; font-size: 16px; line-height: 1.4; margin: 0 0 10px; white-space: pre-wrap; word-break: break-word; }
    .airgo-prompt-note { color: rgba(255, 255, 255, 0.92); font-weight: 600; font-size: 14px; line-height: 1.55; margin: 6px 0 0; white-space: pre-wrap; word-break: keep-all; }
    .airgo-prompt-input { width: 100%; height: 42px; border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 8px; background: rgba(0, 0, 0, 0.2); color: #fff; font-size: 18px; padding: 0 12px; box-sizing: border-box; outline: none; }
    .airgo-prompt-input:focus { border-color: rgba(255, 255, 255, 0.85); }
    .airgo-prompt-input.hidden { display: none; }
    .airgo-prompt-actions { margin-top: 14px; display: flex; justify-content: flex-end; gap: 8px; }
    .airgo-prompt-btn { min-width: 74px; height: 36px; border-radius: 8px; border: 1px solid rgba(255, 255, 255, 0.35); background: rgba(255, 255, 255, 0.08); color: #fff; font-size: 15px; font-weight: 700; cursor: pointer; }
    .airgo-prompt-btn.primary { background: #2f9b73; border-color: #2f9b73; }