:root{--orchid-canvas:#111317;--orchid-sidebar:#090a0df0;--orchid-stage:#13151be6;--orchid-panel:#292c37b8;--orchid-panel-strong:#21242df5;--orchid-panel-soft:#181b22d6;--orchid-border:#ffffff14;--orchid-border-strong:#ffffff24;--orchid-ink:#f3f6fb;--orchid-muted:#96a0b6;--orchid-muted-strong:#c3cad9;--orchid-accent:#5cc7dc;--orchid-accent-2:#8b93ef;--orchid-danger:#ff889c;--orchid-warning:#f7c66d;--orchid-success:#7fe0b8;--orchid-shadow:0 18px 50px #00000042}*{box-sizing:border-box}html,body{background:radial-gradient(circle at top left,#5cc7dc29,transparent 26%),radial-gradient(circle at top right,#8b93ef2e,transparent 22%),linear-gradient(180deg,#15181d 0%,var(--orchid-canvas)100%);height:100%;color:var(--orchid-ink);margin:0;font-family:Segoe UI,Helvetica Neue,Arial,sans-serif}body{overflow:hidden}a{color:inherit;text-decoration:none}.eyebrow{letter-spacing:.18em;text-transform:uppercase;color:var(--orchid-muted);margin:0 0 6px;font-size:.72rem}button,select,textarea{font:inherit}button{color:inherit}.chat-shell{background:linear-gradient(#111317e6,#0c0e12fa);grid-template-columns:300px minmax(0,1fr);height:100dvh;min-height:100dvh;display:grid;overflow:hidden}.chat-sidebar{background:var(--orchid-sidebar);border-right:1px solid var(--orchid-border);flex-direction:column;gap:18px;height:100dvh;min-height:0;padding:18px 16px;display:flex;overflow:hidden}.sidebar-brand-row,.sidebar-section-row,.message-meta,.message-footer,.metric-row,.rating-row,.composer-actions,.lab-topbar,.lab-links,.stage-topbar,.stage-topbar-actions,.composer-toolbar,.sidebar-footer-link{justify-content:space-between;align-items:center;gap:12px;display:flex}.brand-lockup{align-items:center;gap:12px;min-width:0;display:flex}.brand-mark{border:1px solid #ffffff1a;border-radius:14px;flex:none;width:44px;height:44px;overflow:hidden;box-shadow:0 10px 24px #00000038}.brand-mark img{object-fit:cover;width:100%;height:100%}.brand-name{letter-spacing:.01em;margin:0;font-size:1.02rem;font-weight:600}.brand-caption{color:var(--orchid-muted);margin:4px 0 0;font-size:.79rem}.icon-button,.composer-icon-button{border:1px solid var(--orchid-border);cursor:pointer;background:#ffffff08;border-radius:14px;justify-content:center;align-items:center;width:42px;height:42px;transition:background .16s,border-color .16s,transform .16s;display:inline-flex}.icon-button:hover,.composer-icon-button:hover,.send-button:hover,.rating:hover,.sidebar-chat-link:hover,.topbar-link:hover,.sidebar-footer-link:hover{border-color:var(--orchid-border-strong);background:#ffffff0f;transform:translateY(-1px)}.icon-button svg,.composer-icon-button svg,.sidebar-footer-link svg{width:18px;height:18px}.sidebar-section-row{letter-spacing:.14em;text-transform:uppercase;color:var(--orchid-muted);padding:0 4px;font-size:.75rem}.sidebar-chat-list{flex-direction:column;flex:1;gap:6px;min-height:0;padding-right:4px;display:flex;overflow:auto}.sidebar-chat-link{color:var(--orchid-muted-strong);border:1px solid #0000;border-radius:16px;flex-direction:column;gap:4px;padding:12px;transition:background .16s,border-color .16s,transform .16s;display:flex}.sidebar-chat-link strong{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.98rem;font-weight:500;line-height:1.35;display:-webkit-box;overflow:hidden}.sidebar-chat-link span{color:var(--orchid-muted);font-size:.78rem}.sidebar-chat-link.is-active{background:linear-gradient(135deg,#ffffff14,#5cc7dc14);border-color:#5cc7dc2e}.sidebar-footer{border-top:1px solid var(--orchid-border);gap:12px;padding:14px 12px 6px;display:grid}.sidebar-footer-link{border:1px solid var(--orchid-border);color:var(--orchid-muted-strong);background:#ffffff08;border-radius:14px;justify-content:flex-start;padding:10px 12px}.sidebar-footer p{color:var(--orchid-muted);margin:0;font-size:.82rem;line-height:1.45}.chat-stage{background:linear-gradient(#14161deb,#0f1116fa),radial-gradient(circle,#5cc7dc0d,#0000 35%);grid-template-rows:auto minmax(0,1fr) auto;min-width:0;height:100dvh;min-height:0;display:grid;overflow:hidden}.stage-topbar{border-bottom:1px solid #ffffff0a;padding:18px 28px 12px}.stage-model-block{gap:8px;display:grid}.topbar-kicker{letter-spacing:.18em;text-transform:uppercase;color:var(--orchid-muted);margin:0;font-size:.72rem}.stage-model-picker{align-items:center;display:inline-flex;position:relative}.stage-model-picker:after{content:"";pointer-events:none;border-bottom:1.6px solid #f3f6fbc2;border-right:1.6px solid #f3f6fbc2;width:.68rem;height:.68rem;position:absolute;top:50%;right:1.3rem;transform:translateY(-62%)rotate(45deg)}.stage-model-picker select{border:1px solid var(--orchid-border);min-width:min(430px,72vw);color:var(--orchid-ink);appearance:none;background:#ffffff0a;border-radius:18px;padding:.92rem 3.3rem .92rem 1.15rem;line-height:1.35}.stage-topbar-actions{align-self:flex-start}.stage-status,.topbar-link,.sidebar-link{border:1px solid var(--orchid-border);color:var(--orchid-muted-strong);background:#ffffff08;border-radius:999px;padding:.6rem .9rem;font-size:.88rem}.stage-status.is-busy{color:var(--orchid-accent);background:#5cc7dc14;border-color:#5cc7dc3d}.conversation-frame{min-height:0;padding:18px 28px 22px;overflow:auto}.conversation-stack{flex-direction:column;gap:22px;width:min(920px,100%);margin:0 auto;display:flex}.empty-hero{text-align:center;gap:18px;width:min(760px,100%);margin:12vh auto 0;display:grid}.empty-hero h1{letter-spacing:-.04em;margin:0;font-size:clamp(2.4rem,5vw,4rem);font-weight:500}.empty-hero p:last-child{color:var(--orchid-muted);margin:0;font-size:1rem;line-height:1.6}.message-card{gap:10px;width:min(860px,100%);display:grid}.message-card.role-user{justify-items:end;margin-left:auto}.message-card.role-user .message-body{background:#393d49e6;border-color:#ffffff14}.message-card.role-assistant .message-body{background:0 0;border-color:#0000;padding-left:0;padding-right:0}.message-meta{color:var(--orchid-muted);justify-content:flex-start;font-size:.8rem}.message-body{border:1px solid var(--orchid-border);background:var(--orchid-panel-soft);white-space:pre-wrap;border-radius:22px;max-width:min(860px,100%);padding:16px 18px;font-size:1rem;line-height:1.72}.message-footer{flex-wrap:wrap;justify-content:flex-start}.metric-row{color:var(--orchid-muted);flex-wrap:wrap;font-size:.8rem}.rating-row{flex-wrap:wrap;justify-content:flex-start}.rating,.send-button{border:1px solid var(--orchid-border);cursor:pointer;border-radius:999px;transition:background .16s,border-color 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0;border:none;outline:none;font-size:1.08rem;line-height:1.6;overflow-y:auto}.composer-card textarea::placeholder{color:#ffffff61}.composer-actions{align-items:flex-end}.composer-hint{color:var(--orchid-muted);font-size:.86rem;line-height:1.5}.send-button{min-width:148px;color:var(--orchid-ink);background:linear-gradient(135deg,#5cc7dc2e,#8b93ef38);padding:.82rem 1.15rem}.send-button:disabled{opacity:.55;cursor:not-allowed;transform:none}.error-banner{width:min(920px,100%);color:var(--orchid-danger);background:#ff889c14;border:1px solid #ff889c33;border-radius:18px;gap:4px;margin:0 auto;padding:12px 14px;font-size:.88rem;display:grid}.error-banner strong{color:#ffc2cf;font-size:.9rem}.error-banner.is-retryable{color:var(--orchid-warning);background:#f7c66d14;border-color:#f7c66d3d}.error-banner.is-retryable strong{color:#ffe4a7}.error-banner-meta{color:var(--orchid-muted);font-size:.8rem}.lab-page{background:linear-gradient(#14161df0,#0f1116fc),radial-gradient(circle at 0 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