:root,[data-theme=light]{--bg: #fdf8f2;--surface: #f5ede3;--surface-card: #fffbf5;--ink: #2d2a32;--muted: #635d6b;--border: rgba(45, 42, 50, .11);--border-strong: rgba(45, 42, 50, .18);--accent: #c4b5fd;--accent-ink: #2d2a32;--pastel-lavender: #ede9fe;--pastel-lavender-strong: #a78bfa;--pastel-pink: #fce7f3;--pastel-pink-strong: #f9a8d4;--pastel-blue: #e0f2fe;--pastel-blue-strong: #93c5fd;--inv-bg: #232030;--inv-ink: #fdf8f2;--warn: #8a4f08;--warn-bg: #fef3c7;--danger: #9d174d;--danger-bg: #fce7f3;--ok-ink: #0f5132;--ok-bg: #d1fae5;--shadow-card: 0 8px 24px rgba(45, 42, 50, .05);--shadow-hover: 0 12px 28px rgba(196, 181, 253, .25);--radius-card: 20px;--radius-input: 14px;--radius-pill: 999px}[data-theme=dark]{--bg: #191724;--surface: #232030;--surface-card: #2a263a;--ink: #f5f2fa;--muted: #b4aec4;--border: rgba(245, 242, 250, .12);--border-strong: rgba(245, 242, 250, .22);--accent: #c4b5fd;--accent-ink: #191724;--pastel-lavender: rgba(196, 181, 253, .16);--pastel-lavender-strong: #c4b5fd;--pastel-pink: rgba(249, 168, 212, .16);--pastel-pink-strong: #f9a8d4;--pastel-blue: rgba(147, 197, 253, .16);--pastel-blue-strong: #93c5fd;--inv-bg: #12101b;--inv-ink: #f5f2fa;--warn: #fcd34d;--warn-bg: rgba(252, 211, 77, .14);--danger: #fda4af;--danger-bg: rgba(253, 164, 175, .16);--ok-ink: #6ee7b7;--ok-bg: rgba(110, 231, 183, .14);--shadow-card: 0 8px 28px rgba(10, 8, 18, .35);--shadow-hover: 0 12px 30px rgba(196, 181, 253, .18)}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Nunito,Plus Jakarta Sans,system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3,h4{font-family:Plus Jakarta Sans,Nunito,system-ui,sans-serif;margin:0;color:var(--ink)}h1{font-size:clamp(1.85rem,3.2vw,2.5rem);line-height:1.12;letter-spacing:-.025em;font-weight:700}h2{font-size:clamp(1.35rem,2vw,1.75rem);line-height:1.2;letter-spacing:-.02em;font-weight:700}h3{font-size:1.125rem;line-height:1.35;letter-spacing:-.01em;font-weight:600}.mono{font-family:JetBrains Mono,ui-monospace,monospace;font-size:.8125rem;line-height:1.45;font-variant-numeric:tabular-nums}.skip-link{position:absolute;left:-9999px;top:8px;z-index:100;padding:10px 18px;border-radius:var(--radius-pill);background:var(--accent);color:var(--accent-ink);font-weight:700;text-decoration:none}.skip-link:focus{left:16px}[data-enter]{animation:studio-enter .22s cubic-bezier(.22,1,.36,1) both}@keyframes studio-enter{0%{opacity:0;transform:translateY(10px) scale(.99)}to{opacity:1;transform:translateY(0) scale(1)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{transition:none!important;animation:none!important}}.topbar{position:sticky;top:0;z-index:30;background:var(--bg);border-bottom:1px solid var(--border)}.topbar-inner{max-width:1400px;margin:0 auto;padding:12px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.brand-group{display:flex;align-items:center;gap:12px}.brand-title{font-family:Plus Jakarta Sans,sans-serif;font-weight:700;font-size:1.05rem}.topbar-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.btn.topbar-menu-toggle{display:none;min-width:42px;min-height:40px;padding:6px 10px}.studio-shell{max-width:1400px;margin:0 auto;padding:28px 32px 64px;display:grid;grid-template-columns:268px minmax(0,1fr);gap:28px;align-items:start}.stage-rail{position:sticky;top:84px;background:var(--surface-card);border:1px solid var(--border);border-radius:var(--radius-card);padding:18px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:8px}.rail-step{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;padding:10px 14px;border-radius:var(--radius-pill);border:1px solid transparent;background:transparent;color:var(--muted);font-weight:600;font-size:.92rem;cursor:pointer;text-align:left;transition:transform .18s ease-out,background .18s ease-out}.rail-step:hover:not(:disabled){background:var(--pastel-lavender);color:var(--ink);transform:translateY(-1px)}.rail-step.active{background:var(--accent);color:var(--accent-ink);font-weight:700}.rail-step:disabled{opacity:.5;cursor:not-allowed}.workspace{min-width:0;max-width:1120px;display:flex;flex-direction:column;gap:24px}.card{background:var(--surface-card);color:var(--ink);font-family:inherit;border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card)}.card-interactive{transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;cursor:pointer}.card-interactive:hover{transform:translateY(-2px) scale(1.01);box-shadow:var(--shadow-hover)}.card-interactive:active{transform:scale(.99)}.card-interactive.selected{background:var(--pastel-lavender);border-color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 22px;border-radius:var(--radius-pill);font-family:var(--font-display, "Plus Jakarta Sans", sans-serif);font-weight:700;font-size:.875rem;cursor:pointer;border:1.5px solid transparent;transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,filter .18s ease-out;text-decoration:none}.btn:focus-visible,.pill:focus-visible,.rail-step:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid 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Mono,monospace;font-size:.8125rem}.skeleton{background:linear-gradient(90deg,var(--surface) 25%,var(--pastel-lavender) 50%,var(--surface) 75%);background-size:200% 100%;animation:shimmer 1.4s infinite;border-radius:var(--radius-card);min-height:120px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.login-wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 16px}.login-card{width:100%;max-width:420px;background:var(--surface-card);border:1px solid var(--border);border-radius:var(--radius-card);padding:32px 28px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:20px}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:#12101b73;display:flex;justify-content:flex-end}.drawer-panel{width:min(460px,100vw);height:100%;background:var(--surface-card);border-left:1px solid var(--border);padding:24px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}.theme-switch{display:inline-flex;align-items:center;padding:0;border:none;background:transparent;cursor:pointer;min-height:44px}.theme-switch:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--radius-pill)}.theme-switch-track{position:relative;display:inline-flex;align-items:center;width:68px;height:36px;padding:3px;border-radius:var(--radius-pill);border:1.5px solid var(--border-strong);background:var(--pastel-blue, #E0F2FE);box-shadow:inset 0 1px 3px #1e1b2e14;transition:background .22s ease-out,border-color .22s ease-out}.theme-switch.is-dark .theme-switch-track{background:var(--pastel-lavender);border-color:var(--pastel-lavender-strong)}.theme-switch-thumb{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--surface-card);color:#f59e0b;box-shadow:0 2px 6px #1e1b2e24;transform:translate(0);transition:transform .22s cubic-bezier(.22,1,.36,1),color .22s ease-out,background .22s ease-out}.theme-switch.is-dark .theme-switch-thumb{transform:translate(30px);color:var(--accent)}.theme-switch:hover .theme-switch-thumb{scale:1.06}.form-actions{margin-top:12px;padding-top:20px;border-top:1.5px dashed var(--border-strong);display:flex;align-items:center;justify-content:flex-start;gap:12px}.btn-launch{padding:12px 28px;font-size:.9375rem;letter-spacing:.01em}@media (max-width: 1024px){.studio-shell{grid-template-columns:224px minmax(0,1fr);padding:24px 20px 56px}.topbar-inner{padding:12px 20px}}@media (max-width: 768px){.btn.topbar-menu-toggle{display:inline-flex}.topbar-actions{display:none;width:100%;padding-top:10px;border-top:1px solid var(--border);justify-content:flex-start;gap:8px}.topbar-actions.open{display:flex}.studio-shell{grid-template-columns:minmax(0,1fr);padding:16px 16px 48px;gap:16px}.workspace{gap:16px}.card{padding:18px;border-radius:16px}.stage-rail{position:static;flex-direction:row;overflow-x:auto;scrollbar-width:none;scroll-snap-type:x proximity;padding:8px;gap:6px;border-radius:16px}.stage-rail::-webkit-scrollbar{display:none}.rail-step{flex:0 0 auto;white-space:nowrap;min-height:38px;padding:8px 14px;font-size:.84rem;scroll-snap-align:start}.grid-2,.gate3-split{grid-template-columns:minmax(0,1fr);gap:16px}.video-stage{width:100%;max-width:340px;margin:0 auto;padding:12px}.mono,.card p,.card h2,.card h3{overflow-wrap:anywhere}}@media (max-width: 480px){.topbar-inner{padding:10px 14px;gap:10px}.brand-title{font-size:.95rem}.topbar-actions{gap:6px}.topbar-actions .btn{width:auto;min-height:36px;padding:6px 12px;font-size:.8rem}.studio-shell{padding:12px 12px 40px}.card{padding:14px}.pill-group{gap:8px}.pill{flex:1 1 auto;text-align:center;min-height:38px;padding:8px 12px;font-size:.8125rem}.workspace 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