:root{color:#e5edf7;background:#07111f;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,input,textarea,select{font:inherit}.app-shell{background:radial-gradient(circle at 20% 0,#14395b 0,#0000 28%),#07111f;min-height:100vh;padding:20px}.app-layout{grid-template-columns:240px minmax(0,1fr);align-items:start;gap:16px;display:grid}.app-nav{flex-direction:column;gap:18px;min-height:calc(100vh - 40px);display:flex;position:sticky;top:20px}.app-nav h1{font-size:1.55rem}.app-nav nav{gap:10px;display:grid}.app-nav button{cursor:pointer;text-align:left;color:#cbd5e1;background:#0f172ab3;border:1px solid #94a3b838;border-radius:14px;min-height:58px;padding:12px}.app-nav button:hover{background:#1e293bc7;border-color:#7dd3fc6b}.app-nav button.active{color:#ecfeff;background:linear-gradient(135deg,#0e74908c,#1e40af52);border-color:#7dd3fca6;box-shadow:0 16px 34px #082f493d}.app-nav button span{font-weight:850;display:block}.app-nav button small{color:#94a3b8;margin-top:4px;display:block}.app-nav button.active small{color:#bae6fd}.nav-status{color:#bae6fd;background:#0e749029;border:1px solid #7dd3fc38;border-radius:14px;margin-top:auto;padding:12px}.app-content{min-width:0}.app-header{justify-content:space-between;align-items:end;gap:20px;margin-bottom:16px;display:flex}.eyebrow{color:#7dd3fc;letter-spacing:.08em;margin:0 0 6px;font-weight:800}h1{margin:0;font-size:clamp(1.8rem,4vw,3.4rem)}h2{margin:0 0 12px;font-size:1.05rem}h3{margin:0 0 8px}.status-pill{color:#bae6fd;background:#0e74902e;border:1px solid #7dd3fc59;border-radius:999px;padding:10px 14px}.status-pill.small{padding:7px 10px;font-size:.82rem}.workspace{grid-template-columns:minmax(280px,360px) minmax(420px,1fr) minmax(300px,420px);align-items:stretch;gap:16px;display:grid}.panel,.scene-panel{background:#0f172ad1;border:1px solid #94a3b83d;border-radius:18px;box-shadow:0 20px 60px #00000038}.panel{padding:16px;overflow:auto}.controls-panel,.detail-panel{max-height:74vh}.scene-panel{min-height:74vh;position:relative;overflow:hidden}.scene-canvas-wrap{outline:none;position:absolute;inset:0}.scene-canvas-wrap canvas{display:block}.loading{color:#bfdbfe;place-items:center;height:100%;display:grid}.input-row{color:#cbd5e1;gap:6px;margin-bottom:12px;display:grid}.input-row input,.input-row textarea,.input-row select{color:#e2e8f0;background:#0f172a;border:1px solid #94a3b859;border-radius:10px;width:100%;padding:10px}.input-row textarea{resize:vertical;line-height:1.45}.formula-note{color:#93c5fd;font-size:.9rem}.summary-card{color:#cbd5e1;background:#1e293bbf;border-radius:12px;gap:4px;margin:10px 0;padding:10px;display:grid}.mapping{margin:12px 0}.mapping summary{cursor:pointer;color:#bfdbfe;font-weight:700}table{border-collapse:collapse;width:100%;margin-top:8px;font-size:.82rem}th,td{text-align:left;vertical-align:top;border-bottom:1px solid #94a3b829;padding:5px}.pile-detail p{color:#cbd5e1;margin:7px 0}.layer-list{gap:8px;margin-top:14px;display:grid}.layer-row{background:#1e293ba6;border-radius:10px;gap:2px;padding:8px;display:grid}.layer-row span:first-child{color:#fde68a;font-weight:700}.layer-row small{color:#94a3b8}.warnings-panel{max-height:240px;margin-top:16px}.warning{color:#cbd5e1;background:#1e293b9e;border-radius:10px;margin:6px 0;padding:8px}.warning.error{color:#fecaca;background:#7f1d1d40}.warning.warning{color:#fed7aa;background:#7c2d1240}.warning.info{color:#bfdbfe;background:#1e40af38}.error-panel{color:#fecaca;margin-bottom:16px}@media (width<=1100px){.app-layout{grid-template-columns:1fr}.app-nav{min-height:auto;position:static}.app-nav nav{grid-template-columns:repeat(2,minmax(0,1fr))}.workspace{grid-template-columns:1fr}.scene-panel{min-height:60vh}.app-header{flex-direction:column;align-items:start}}.layer-visibility{background:#0f172ab8;border:1px solid #7dd3fc2e;border-radius:14px;margin:14px 0;padding:12px}.layer-visibility summary{cursor:pointer;color:#bfdbfe;font-weight:800}.layer-actions{gap:8px;margin:10px 0;display:flex}.layer-actions button{cursor:pointer;color:#dbeafe;background:#0e74902e;border:1px solid #7dd3fc47;border-radius:10px;flex:1;padding:7px 8px}.layer-actions button:hover{background:#0e749052}.layer-toggle-list{gap:7px;max-height:220px;padding-right:4px;display:grid;overflow:auto}.layer-toggle{color:#cbd5e1;cursor:pointer;background:#1e293b8c;border-radius:10px;align-items:center;gap:8px;padding:7px 8px;display:flex}.layer-toggle:hover{background:#334155b8}.layer-toggle input{accent-color:#38bdf8}.layer-toggle span{line-height:1.25}.capacity-card{background:#451a032e;border:1px solid #fbbf2447;border-radius:14px;margin:14px 0;padding:12px}.capacity-card h3{color:#fde68a}.capacity-grid{color:#cbd5e1;grid-template-columns:minmax(120px,1fr) 1fr;gap:6px 10px;margin:10px 0;display:grid}.capacity-grid strong{color:#e2e8f0;text-align:right}.capacity-total{font-size:1.05rem;color:#86efac!important}.capacity-card summary{cursor:pointer;color:#bfdbfe;margin:8px 0;font-weight:800}.capacity-table{font-size:.78rem}.capacity-table th,.capacity-table td{padding:4px}.capacity-result{color:#bbf7d0;background:#16653438;border-radius:12px;gap:6px;margin:10px 0 12px;padding:12px;display:grid}.capacity-result strong{color:#86efac;font-size:1.35rem}.capacity-grid.compact{grid-template-columns:minmax(80px,1fr) 1fr}.primary-action{cursor:pointer;color:#dcfce7;background:#1665348c;border:1px solid #86efac59;border-radius:12px;width:100%;padding:10px 12px;font-weight:800}.primary-action:hover:not(:disabled){background:#166534bf}.primary-action:disabled{cursor:not-allowed;opacity:.65}.chat-page{grid-template-columns:minmax(0,1fr);align-items:stretch;gap:16px;min-height:74vh;display:grid}.chat-main{flex-direction:column;gap:14px;max-height:78vh;display:flex;overflow:hidden}.chat-title{justify-content:space-between;align-items:start;gap:12px;display:flex}.chat-thread{background:#02061759;border:1px solid #94a3b824;border-radius:16px;flex-direction:column;flex:1;gap:12px;padding:12px;display:flex;overflow:auto}.chat-bubble{background:#1e293bc7;border:1px solid #94a3b829;border-radius:16px;max-width:min(760px,86%);padding:12px 14px}.chat-bubble.user{background:#0e74905c;border-color:#7dd3fc47;align-self:flex-end}.chat-bubble.assistant{background:#0f172ae0;align-self:flex-start}.chat-bubble strong{color:#bfdbfe;margin-bottom:6px;display:block}.chat-bubble p{color:#e2e8f0;white-space:pre-wrap;margin:0;line-height:1.55}.chat-composer{grid-template-columns:116px minmax(0,1fr) 120px;align-items:stretch;gap:10px;display:grid}.chat-composer textarea{color:#e2e8f0;resize:vertical;background:#0f172a;border:1px solid #94a3b859;border-radius:14px;width:100%;min-height:72px;padding:12px}.chat-composer .primary-action{height:100%}.upload-action{cursor:pointer;color:#bae6fd;text-align:center;background:#0e749029;border:1px dashed #7dd3fc73;border-radius:14px;place-items:center;min-height:72px;padding:10px;font-weight:800;display:grid}.upload-action:hover{background:#0e749047}.upload-action input{display:none}.selected-file{color:#bbf7d0;background:#16653433;border:1px solid #86efac38;border-radius:12px;padding:9px 12px;font-size:.9rem}.backend-progress{color:#fde68a;background:#78350f38;border:1px solid #fbbf2447;border-radius:12px;padding:10px 12px;font-size:.9rem}.backend-progress small{color:#fed7aa;margin-top:4px;display:block}@media (width<=900px){.app-nav nav{grid-template-columns:1fr}.chat-main{max-height:none}.chat-composer{grid-template-columns:1fr}}