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ease}.lang-switch:hover{border-color:var(--accent)}.lang-switch:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.lang-thumb{position:absolute;top:3px;left:3px;width:calc(50% - 3px);height:calc(100% - 6px);border-radius:999px;background:var(--accent);box-shadow:0 1px 3px #00000029;transition:transform .22s cubic-bezier(.4,0,.2,1)}.lang-switch[data-active=en] .lang-thumb{transform:translate(100%)}.lang-opt{position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;min-width:30px;padding:5px 4px;color:var(--muted);transition:color .18s ease}.lang-opt.on{color:#08080b}.chat-messages{flex:1;overflow-y:auto;padding:26px 0;min-height:0}.atlas-board{flex:1;overflow-y:auto;min-height:0;padding:26px clamp(18px,4vw,48px) 44px}.atlas-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--line)}.atlas-head h2{margin:0;font-size:1.3rem;font-weight:800;letter-spacing:.01em;color:var(--text)}.atlas-count{position:relative;display:inline-flex;align-items:center;gap:8px;min-height:34px;padding:5px 9px 5px 10px;border:1px solid rgba(255,214,10,.22);border-left-width:3px;border-radius:7px;font-size:.72rem;color:var(--text);background:linear-gradient(90deg,#ffd60a21,#ffd60a08 42%,#ffffff06),var(--surface-2);box-shadow:inset 0 1px #ffffff0d,0 10px 24px #0000002e;white-space:nowrap}.atlas-count strong{font-family:var(--mono);font-size:1.08rem;font-variant-numeric:tabular-nums;line-height:1;color:var(--accent)}.atlas-count-unit{font-weight:800;color:var(--text)}.atlas-count-mode{display:inline-flex;align-items:center;min-height:20px;padding:0 7px;border:1px solid rgba(255,255,255,.08);border-radius:999px;font-size:.62rem;font-weight:900;line-height:1;text-transform:uppercase;color:var(--accent-on-dark);background:#ffffff0e}.atlas-sort{display:inline-flex;align-items:center;padding:2px;border:1px solid var(--line);border-radius:7px;background:var(--surface-2)}.atlas-sort button{min-width:62px;height:28px;padding:0 10px;border:0;border-radius:5px;font:700 .72rem/1 var(--font-sans);color:var(--muted);background:transparent;cursor:pointer}.atlas-sort button.on{color:#111116;background:var(--accent)}.atlas-sort button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.atlas-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:56px 20px;color:var(--muted);text-align:center}.atlas-state strong{color:var(--text)}.atlas-state.error{color:var(--danger)}.atlas-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}.atlas-card{container:atlas-card / inline-size;position:relative;border:1px solid var(--line);border-radius:10px;background:var(--surface);overflow:hidden;transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease}.atlas-card:hover{border-color:var(--accent);box-shadow:0 6px 22px #ffd60a2e;transform:translateY(-2px)}.atlas-card-body{display:flex;flex-direction:column;width:100%}.atlas-cover{position:relative;display:grid;place-items:center;width:100%;aspect-ratio:4 / 3;color:var(--muted);background:linear-gradient(90deg,rgba(90,98,120,.06) 1px,transparent 1px),linear-gradient(rgba(90,98,120,.06) 1px,transparent 1px),var(--paper);background-size:16px 16px,16px 16px,auto;border-bottom:1px solid var(--line-2);touch-action:pan-y}.atlas-cover[role=button]{cursor:pointer}.atlas-cover:focus-visible{outline:3px solid var(--accent);outline-offset:-3px}.atlas-cover.is-live{cursor:default}.atlas-cover img{width:100%;height:100%;object-fit:cover}.atlas-live{position:absolute;inset:0;background:var(--paper)}.atlas-preview-hint{position:absolute;z-index:2;top:8px;right:8px;display:inline-flex;align-items:center;gap:4px;min-height:24px;padding:0 7px;border:1px solid rgba(255,214,10,.24);border-radius:999px;background:#11111652;color:#ffe066;text-shadow:0 1px 2px rgba(0,0,0,.78);font-family:var(--mono);font-size:.64rem;font-weight:700;pointer-events:none}.atlas-preview-hint>svg{width:12px;height:12px}.atlas-preview-hint-touch{display:none}@media(hover:none),(pointer:coarse){.atlas-preview-hint-hover{display:none}.atlas-preview-hint-touch{display:inline}}.atlas-index{z-index:2;position:absolute;top:8px;left:8px;padding:2px 7px;border-radius:5px;font-family:var(--mono);font-size:.66rem;font-weight:600;letter-spacing:.08em;color:var(--muted);background:#111116e0;border:1px solid var(--line)}.atlas-card-info{display:grid;gap:6px;width:100%;padding:11px 12px 8px;min-width:0}.atlas-title{position:relative;display:block;height:2.4em;min-height:2.4em;max-height:2.4em;font-size:.92rem;line-height:1.2;font-weight:800;color:var(--text);overflow:hidden;clip-path:inset(0);contain:layout paint}.atlas-title-text{display:-webkit-box;max-height:2.4em;overflow:hidden;overflow-wrap:anywhere;-webkit-line-clamp:2;-webkit-box-orient:vertical}.atlas-details{display:grid;grid-template-columns:minmax(52px,1fr) max-content max-content;align-items:center;gap:0;min-width:0;font-size:.72rem;color:var(--muted)}.atlas-author{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.atlas-date,.atlas-use-count{min-width:0;margin-left:7px;padding-left:7px;border-left:1px solid var(--line);white-space:nowrap;font-variant-numeric:tabular-nums}.atlas-date{max-width:76px;overflow:hidden;text-overflow:ellipsis}.atlas-use-count{display:inline-flex;align-items:center;justify-content:flex-end;gap:4px;font-family:var(--mono);font-size:.69rem;font-weight:800;color:var(--accent-on-dark)}.atlas-use-count>span{overflow:hidden;text-overflow:ellipsis}.atlas-use-label{font-size:.62rem;font-weight:700;color:var(--muted)}@container atlas-card (max-width: 255px){.atlas-use-label{display:none}}.atlas-card-actions{display:grid;grid-template-columns:minmax(0,1fr);gap:8px;margin:0 12px 5px}.atlas-card.own .atlas-card-actions{grid-template-columns:minmax(0,1fr) 44px}.atlas-action{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;min-height:44px;padding:0 14px;border:0;border-radius:9px;font-size:.76rem;font-weight:800;color:var(--accent);background:transparent;cursor:pointer;touch-action:manipulation}.atlas-action:before{content:"";position:absolute;inset:4px 0;z-index:-1;border:1px solid rgba(255,214,10,.34);border-radius:7px;background:#ffd60a12;transition:background .15s ease,border-color .15s ease}.atlas-action:hover:not(:disabled):before{border-color:var(--accent);background:#ffd60a21}.atlas-action:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.atlas-action:disabled{cursor:progress;opacity:.7}.atlas-withdraw{position:relative;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;min-height:44px;padding:0;border:0;border-radius:50%;color:#fff;background:transparent;cursor:pointer;touch-action:manipulation}.atlas-withdraw:before{content:"";position:absolute;inset:4px;z-index:-1;border:1px solid color-mix(in srgb,var(--danger) 58%,transparent);border-radius:50%;background:var(--danger);box-shadow:0 4px 10px color-mix(in srgb,var(--danger) 22%,transparent);transition:border-color .15s ease,background .15s ease,box-shadow .15s ease}.atlas-withdraw:hover:not(:disabled):before{border-color:#fff;background:color-mix(in srgb,var(--danger) 84%,#000);box-shadow:0 5px 13px color-mix(in srgb,var(--danger) 30%,transparent)}.atlas-withdraw:focus-visible{outline:3px solid color-mix(in srgb,var(--danger) 48%,#fff);outline-offset:2px}.atlas-withdraw:disabled{cursor:progress;opacity:.5}.chat-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;height:100%;color:var(--muted);text-align:center}.chat-empty-hero-icon{position:relative;display:grid;place-items:center;width:64px;height:64px;margin-bottom:4px;border:1px solid var(--accent);border-radius:10px;color:#fff;background:linear-gradient(145deg,#c084fc,#ffd60a 58%,#6d28d9);box-shadow:0 14px 32px #ffd60a3d}.chat-empty-hero-icon svg{color:currentColor}.chat-empty-hero-icon svg:last-child{position:absolute;top:8px;right:8px;color:#ead7ff}.chat-empty h2{margin:10px 0 0;color:var(--text);font-size:clamp(1.25rem,2.2vw,1.55rem);font-weight:800;letter-spacing:-.02em;text-wrap:balance}.chat-empty p{margin:0;font-family:var(--mono);font-size:.76rem;letter-spacing:.02em;color:var(--muted)}.chat-empty .chat-empty-lead{max-width:min(980px,calc(100% - 48px));margin-top:4px;padding:0 20px;color:var(--muted);font-family:var(--font-sans);font-size:.92rem;line-height:1.7;text-wrap:pretty}.chat-empty-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:16px;width:min(1040px,calc(100% - 48px));margin-top:22px;text-align:left}.chat-empty-option{position:relative;display:flex;min-height:164px;align-items:stretch;flex-direction:column;justify-content:flex-start;gap:20px;padding:19px;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:#111116f5;box-shadow:0 10px 28px #4a251214;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.chat-empty-option:before{position:absolute;inset:0 0 auto;height:3px;content:"";background:linear-gradient(90deg,var(--accent),var(--accent-on-dark))}.chat-empty-option:hover{border-color:#ffd60a73;box-shadow:0 16px 38px #4a25121f;transform:translateY(-3px)}.chat-empty-option-head{display:flex;align-items:center;justify-content:space-between;color:var(--accent)}.chat-empty-number{display:inline-flex;align-items:center;min-width:31px;height:22px;padding:0 7px;border:1px solid rgba(255,214,10,.24);border-radius:999px;color:var(--accent);background:var(--accent-soft);font-family:var(--mono);font-size:.66rem;font-weight:800}.chat-empty-option strong{display:block;margin:0 0 10px;color:var(--text);font-size:1.02rem;line-height:1.35}.chat-empty-option p{color:var(--muted);font-family:var(--font-sans);font-size:.84rem;line-height:1.65}@media(max-width:700px){.chat-empty .chat-empty-lead{white-space:normal}.chat-empty-options{grid-template-columns:1fr;max-width:420px}.atlas-head{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px 12px}.atlas-head-copy{grid-column:1 / -1;min-width:0}.atlas-head h2{white-space:nowrap}.atlas-count{justify-self:start;min-width:0}.atlas-sort{justify-self:end}}.message-row{display:flex;padding:7px 24px;max-width:860px;margin:0 auto;width:100%}.message-row.user{justify-content:flex-end}.message-row.assistant{justify-content:flex-start}.message-bubble{max-width:82%;padding:11px 15px;border-radius:var(--radius, 4px);font-size:.9rem;line-height:1.55}.message-bubble.user{background:var(--accent-soft);color:var(--text);border:1px solid #3a3048;border-left:3px solid var(--accent);box-shadow:0 8px 20px #a855f72e}.message-bubble.assistant{background:var(--surface);color:var(--text);border:1px solid var(--line)}.message-bubble.has-attachment{background:transparent;padding:0;border:none;color:var(--text)}.message-bubble.has-attachment .message-image-frame,.message-bubble.has-attachment .message-model-attachment{margin-bottom:8px}.message-bubble.user.has-attachment{display:flex;flex-direction:column;align-items:flex-end}.message-bubble.attachment-only .message-image-frame,.message-bubble.attachment-only .message-model-attachment{margin-bottom:0}.message-bubble.has-attachment:not(.attachment-only) .message-content{display:inline-block;max-width:100%;padding:11px 15px;border-radius:var(--radius, 4px)}.message-bubble.user.has-attachment:not(.attachment-only) .message-content{background:var(--accent-soft);color:var(--text);border:1px solid #3a3048;border-left:3px solid var(--accent);box-shadow:0 8px 20px #a855f72e;text-align:left}.message-bubble.assistant.has-attachment:not(.attachment-only) .message-content{background:var(--surface);color:var(--text);border:1px solid var(--line)}.message-image-frame{position:relative;display:inline-block;width:min(280px,72vw);aspect-ratio:4 / 3;overflow:hidden;border:0;border-radius:3px;background:transparent;line-height:0}.message-bubble.user.has-image .message-image-frame{margin-left:auto}.message-model-attachment{display:flex;align-items:center;gap:10px;width:min(280px,72vw);padding:10px 12px;border:1px solid var(--line);border-radius:3px;background:var(--surface);color:var(--text);box-shadow:0 10px 24px #17181a14}.message-model-attachment>svg{flex-shrink:0;color:var(--accent)}.message-model-attachment strong,.message-model-attachment span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-model-attachment strong{max-width:220px;font-family:var(--mono);font-size:.78rem;color:var(--text)}.message-model-attachment span{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.message-model-preview{position:relative;width:min(280px,72vw);height:190px;overflow:hidden;border:1px solid var(--line);border-radius:3px;background:#f6f6f3;box-shadow:0 10px 24px #17181a14}.message-model-preview>img{display:block;width:100%;height:100%;object-fit:contain}.message-model-live{width:min(280px,72vw)}.message-model-live .cad-viewer,.message-model-live .cad-thumb-main img,.message-model-live .cad-thumb-fallback{height:190px}.message-bubble.user.model-boxed{display:flex;flex-direction:column;gap:10px;align-items:stretch;width:min(320px,82vw);max-width:82%;padding:10px;background:var(--accent-soft);border:1px solid #3a3048;border-left:3px solid var(--accent);border-radius:var(--radius, 4px);color:var(--text);box-shadow:0 8px 20px #a855f72e}.message-bubble.model-boxed .message-model-live{width:100%}.message-bubble.model-boxed .message-model-live .cad-viewer,.message-bubble.model-boxed .message-model-live .cad-thumb{border-color:#3a3048}.message-bubble.model-boxed .message-content{padding:2px 2px 0;background:transparent;border:none;color:var(--text);font-size:.88rem}.message-bubble.user.image-boxed{display:flex;flex-direction:column;gap:10px;align-items:stretch;width:min(320px,82vw);max-width:82%;padding:10px;background:var(--accent-soft);border:1px solid #3a3048;border-left:3px solid var(--accent);border-radius:var(--radius, 4px);color:var(--text);box-shadow:0 8px 20px #a855f72e}.message-bubble.image-boxed .message-image-frame{display:block;width:100%;aspect-ratio:4 / 3}.message-bubble.image-boxed .message-image{width:100%;max-width:100%;max-height:100%;height:100%;margin-bottom:0}.message-bubble.image-boxed .message-content{padding:2px 2px 0;background:transparent;border:none;box-shadow:none;color:var(--text);font-size:.88rem;text-align:left}.image-lightbox-scrim{position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;padding:24px;background:#08080ad1;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);cursor:default;overscroll-behavior:contain}.image-lightbox-img{max-width:min(1120px,88vw);max-height:min(760px,84vh);object-fit:contain;border-radius:4px;box-shadow:0 20px 60px #00000080;cursor:default}.image-lightbox-close{position:fixed;top:18px;right:18px;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;border-radius:50%;background:#ffffff1f;color:#fff;cursor:pointer;transition:background .2s ease}.image-lightbox-close:hover{background:#ffffff3d}.image-lightbox-download{position:fixed;top:18px;right:66px;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:none;border-radius:50%;background:#ffffff1f;color:#fff;cursor:pointer;text-decoration:none;transition:background .2s ease}.image-lightbox-download:hover{background:#ffffff3d}.message-content{white-space:pre-wrap;word-wrap:break-word}.cad-card-footer{display:flex;align-items:center;gap:10px;margin-top:-2px;margin-bottom:-4px}.cad-card-footer .cad-status{margin-left:0}.cad-atlas-link{display:inline-flex;align-items:center;gap:4px;min-height:22px;padding:2px 7px;border:1px solid rgba(192,132,252,.24);border-radius:4px;background:#c084fc14;color:var(--accent-on-dark);font-family:var(--mono);font-size:.58rem;font-weight:650;letter-spacing:.035em;line-height:1;text-decoration:none;text-transform:uppercase;transition:background .15s ease,border-color .15s ease,color .15s ease}.cad-atlas-link:hover{border-color:#c084fc80;background:#c084fc29;color:#e9d5ff}.cad-atlas-link:focus-visible{outline:2px solid var(--accent-on-dark);outline-offset:2px}.generated-by{margin-left:auto;color:color-mix(in srgb,var(--muted) 62%,transparent);font-family:var(--mono);font-size:.66rem;line-height:1.2;text-align:right}.typing{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-family:var(--mono);font-size:.8rem}.message-error{margin-top:8px;padding:8px 10px;background:var(--danger-soft);color:var(--danger);border-radius:3px;font-size:.8rem}.chat-error-banner{max-width:860px;margin:0 auto 8px;padding:10px 14px;background:var(--danger-soft);color:var(--danger);border:1px solid #efcabf;border-radius:3px;font-size:.83rem;width:calc(100% - 48px)}.composer{position:relative;display:flex;flex-direction:column;max-width:860px;width:100%;margin:0 auto;padding:14px 24px max(22px,env(safe-area-inset-bottom))}.composer.drag-active{border-radius:8px;background:var(--accent-soft);box-shadow:inset 0 0 0 2px var(--accent)}.composer-drop-hint{position:absolute;z-index:8;inset:6px 16px 8px;display:flex;align-items:center;justify-content:center;gap:9px;border:1.5px dashed var(--accent);border-radius:7px;color:var(--accent-hover);background:#141108f0;font-family:var(--mono);font-size:.78rem;font-weight:700;pointer-events:none}.composer-row{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"input input" "tools send";align-items:end;gap:8px;padding:8px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:0 12px 34px #0000006b,inset 0 1px #ffffff0f;transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease}.composer-row:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),0 16px 38px #a855f733;transform:translateY(-1px)}.composer-image{position:relative;width:76px;height:76px;flex-shrink:0;align-self:flex-start;margin:2px 0 0 2px}.composer-image img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius, 4px);border:1px solid var(--line)}.attachment-upload-status{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;border-radius:var(--radius, 4px);background:#1112147a;color:#fff;pointer-events:none}.composer-snapshot{position:relative;width:76px;height:76px;flex-shrink:0;align-self:flex-start;margin:2px 0 0 2px;padding:4px;border:1px solid var(--line);border-radius:var(--radius, 4px);background:#ffffff8c}.composer-snapshot img{width:100%;height:100%;object-fit:contain;display:block;filter:drop-shadow(0 1px 2px rgba(0,0,0,.12))}.composer-snapshot button,.composer-image button{position:absolute;top:-7px;right:-7px;width:20px;height:20px;border-radius:50%;border:none;background:var(--ink);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}.composer-file{position:relative;display:inline-flex;align-items:center;gap:8px;max-width:min(300px,100%);height:46px;padding:0 14px 0 10px;border:1px solid var(--line);border-radius:var(--radius, 4px);background:var(--surface);align-self:flex-start;margin:2px 0 0 2px}.composer-file-icon{display:flex;flex-shrink:0;color:var(--accent)}.composer-file-name{font-family:var(--mono);font-size:.78rem;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.composer-file button{position:absolute;top:-7px;right:-7px;width:20px;height:20px;border-radius:50%;border:none;background:var(--ink);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}.composer-attach{display:flex;align-items:center;justify-content:center;width:44px;min-width:44px;height:44px;border:0;border-radius:12px;background:var(--paper);color:var(--muted);cursor:pointer;flex-shrink:0;transition:background .15s ease,color .15s ease,transform .12s ease}.composer-attach:hover{background:var(--accent-soft);color:var(--accent);transform:translateY(-1px)}.composer-attach:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.invitation-dialog-backdrop{position:fixed;inset:0;z-index:1200;display:grid;place-items:center;padding:24px;overflow-y:auto;background:#050507c7;-webkit-backdrop-filter:blur(10px) saturate(110%);backdrop-filter:blur(10px) 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