:root{color-scheme:light;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:#202624;background:#171b1a;font-synthesis:none;--header-height: 58px;--ink: #202624;--charcoal: #171b1a;--charcoal-soft: #252b29;--paper: #f5f5f1;--paper-strong: #ffffff;--line: #d9dbd5;--muted: #6f7773;--accent: #cf7830;--accent-dark: #8f4f1f;--green: #547c61;--danger: #a84e42}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}body,button,input,select{font:inherit}button,select{letter-spacing:0}button:focus-visible,select:focus-visible,label[role=button]:focus-visible{outline:2px solid #e59a58;outline-offset:2px}.app-header{position:relative;z-index:50;height:var(--header-height);display:grid;grid-template-columns:minmax(220px,1fr) auto minmax(220px,1fr);align-items:center;gap:18px;padding:0 12px;border-bottom:1px solid #323735;background:var(--charcoal);color:#f7f7f4}.brand,.header-actions,.command-button,.primary-button,.scene-badge,.view-controls,.environment-control,.model-status,.section-heading,.privacy-note,.drop-overlay{display:flex;align-items:center}.brand{min-width:0;gap:10px}.brand-mark{width:32px;height:32px;display:grid;place-items:center;flex:0 0 32px;border:1px solid #4a514e;background:#252b29;color:#f6b478;font-size:10px;font-weight:780}.brand-copy{min-width:0;display:grid;gap:1px}.brand-copy strong{font-size:13px;line-height:1.3}.brand-copy span{max-width:min(34vw,420px);overflow:hidden;color:#aeb5b1;font-size:10px;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.header-context{min-width:0}.region-select{width:min(310px,30vw);height:34px;padding:0 30px 0 10px;border:1px solid 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#a8afaa;border-radius:6px;background:#f7f7f3f5;box-shadow:0 20px 52px #2c353129}.upload-symbol{width:58px;height:58px;display:grid;place-items:center;margin-bottom:5px;border:1px solid #d2d5d0;border-radius:50%;background:#fff;color:var(--accent)}.upload-symbol svg{width:25px;height:25px;stroke-width:1.45}.eyebrow{margin:0;color:#7c837f;font-size:9px;font-weight:720;letter-spacing:.08em}.drop-zone h1{margin:0;color:var(--ink);font-size:21px;line-height:1.35;letter-spacing:0}.drop-zone small{color:var(--muted);font-size:10px}.primary-button{height:38px;gap:7px;margin:9px 0 2px;padding:0 15px;background:var(--charcoal-soft);color:#fff;font-size:11px}.drop-overlay{display:flex;z-index:80;justify-content:center;gap:10px;background:#1c2220db;color:#fff;font-size:15px;pointer-events:none}.drop-overlay svg{width:24px;height:24px;color:#f2a762}.loading-state,.error-state{display:grid;align-content:center;justify-items:center;gap:8px;padding:30px;background:#d8dedce0;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);text-align:center}.loading-state strong,.error-state strong{margin-top:7px;font-size:14px}.loading-state>span:last-child,.error-state p{max-width:480px;margin:0;color:#626b67;font-size:11px;line-height:1.6}.loading-orbit{width:42px;height:42px;border:2px solid #aeb6b1;border-top-color:var(--accent);border-radius:50%;animation:loading-spin .9s linear infinite}@keyframes loading-spin{to{transform:rotate(360deg)}}.error-state>svg{width:30px;height:30px;color:var(--danger)}.secondary-button{height:34px;display:inline-flex;align-items:center;margin-top:6px;padding:0 12px;border-color:#aeb4b0;background:#f7f7f3;color:var(--ink);font-size:10px}.scene-badge{position:absolute;top:16px;left:16px;z-index:12;gap:9px;min-height:42px;padding:7px 12px;border:1px solid rgb(64 73 69 / 22%);border-radius:5px;background:#f4f5f1db;box-shadow:0 8px 22px #232b271a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.live-dot{width:7px;height:7px;flex:0 0 7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px #547c612e}.scene-badge div{min-width:0;display:grid;gap:1px}.scene-badge strong{max-width:min(36vw,360px);overflow:hidden;font-size:11px;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}.scene-badge span:last-child{color:var(--muted);font-size:9px}.view-controls{position:absolute;left:50%;bottom:18px;z-index:14;transform:translate(-50%);gap:3px;height:42px;padding:4px;border:1px solid rgb(55 64 60 / 23%);border-radius:6px;background:#f4f5f1e0;box-shadow:0 10px 28px #1f272324;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.environment-control{height:32px;gap:5px;padding:0 3px 0 7px;color:#4d5752}.environment-control 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dd{overflow-wrap:anywhere;color:#343b38;text-align:right}.selection-empty{min-height:86px;display:grid;place-content:center;justify-items:center;gap:7px;color:#818985;font-size:9px}.selection-empty svg{width:17px;height:17px}.privacy-note{position:absolute;left:16px;bottom:16px;z-index:12;gap:6px;color:#57615c;font-size:9px;transition:opacity .18s ease}.privacy-note svg{width:14px;height:14px;color:var(--green)}.privacy-note.is-loaded{opacity:.68}.is-hidden{display:none!important}@media(max-width:900px){.app-header{grid-template-columns:minmax(0,1fr) auto}.header-context{position:absolute;top:calc(100% + 12px);left:12px}.region-select{width:min(260px,calc(100vw - 24px));border-color:#4e57523d;background:#f4f5f1e5;color:#303835;box-shadow:0 8px 22px #232b271a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.scene-badge{top:58px}}@media(max-width:640px){:root{--header-height: 54px}.app-header{gap:6px;padding:0 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