:root{color-scheme:light;font-family:Inter,Segoe UI,Microsoft YaHei,PingFang SC,Arial,sans-serif;background:#06111d;color:#172028;--hud-bg: rgba(7, 18, 31, .78);--hud-bg-strong: rgba(7, 18, 31, .88);--hud-border: rgba(112, 232, 255, .24);--hud-border-warm: rgba(255, 181, 65, .36);--hud-text: #f4fbff;--hud-muted: rgba(214, 230, 238, .72);--accent: #f06b18;--accent-hot: #ffbd35;--cyan: #5de4ff}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}body{background:linear-gradient(180deg,#bdefff,#d8f7ff 44%,#eef5f2)}body:before{position:fixed;inset:0;z-index:1;pointer-events:none;content:"";background:linear-gradient(rgba(93,228,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(93,228,255,.06) 1px,transparent 1px);background-size:72px 72px;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.38),transparent 52%);mask-image:linear-gradient(180deg,rgba(0,0,0,.38),transparent 52%)}#scene-canvas{position:fixed;inset:0;z-index:0;display:block;width:100%;height:100%;touch-action:none}.site-logo{position:fixed;top:18px;left:18px;z-index:4;width:min(272px,28vw);height:auto;pointer-events:none;filter:drop-shadow(0 10px 20px rgba(4,13,22,.34)) drop-shadow(0 0 18px rgba(93,228,255,.12))}.language-switcher{position:fixed;top:18px;right:18px;z-index:8;display:flex;gap:6px;padding:6px;border:1px solid var(--hud-border);border-radius:8px;background:linear-gradient(145deg,#0a1e2fe0,#07101cc2);box-shadow:0 18px 42px #02090f38,inset 0 1px #ffffff1a;-webkit-backdrop-filter:blur(16px) saturate(1.22);backdrop-filter:blur(16px) saturate(1.22)}.language-switcher button{min-width:58px;min-height:31px;padding:7px 9px;border:1px solid rgba(93,228,255,.22);border-radius:6px;background:#ecf6f9eb;color:#142130;font:inherit;font-size:12px;font-weight:850;cursor:pointer}.language-switcher button.active{border-color:#ffd166c2;background:linear-gradient(135deg,#df6617,#ff8928);color:#fff;box-shadow:0 0 16px #ff822247}body:not([data-mode=selector]) .language-switcher{inset:112px auto auto 18px}.product-selector{position:fixed;left:50%;bottom:24px;z-index:7;display:grid;gap:10px;width:min(820px,calc(100vw - 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