:root {
      --paper: #f3f0e8;
      --ink: #171714;
      --muted: #6f7069;
      --line: rgba(23, 23, 20, .18);
      --orange: #f45a24;
      --cyan: #34d7d0;
      --blue: #3157ff;
      --time: 0;
      --explode: 0;
      --spin: 0deg;
      --camera-x: 0px;
      --camera-y: 0px;
      --type-x: 0px;
      --type-y: 0px;
      --type-rotation: 0deg;
      --type-scale: 1;
      --type-opacity: 1;
    }

    * { box-sizing: border-box; }

    html, body {
      margin: 0;
      min-height: 100%;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    body {
      min-height: 100vh;
      overflow: hidden;
      background-image:
        linear-gradient(to right, rgba(23,23,20,.045) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(23,23,20,.045) 1px, transparent 1px);
      background-size: 48px 48px;
    }

    button, input { font: inherit; }
    button { color: inherit; }

    .app {
      display: grid;
      grid-template-rows: 54px 42px minmax(0, 1fr) 228px;
      min-height: 100vh;
    }

    .topbar {
      display: grid;
      grid-template-columns: 220px 1fr auto;
      align-items: center;
      border-bottom: 1px solid var(--ink);
      background: rgba(243, 240, 232, .92);
      backdrop-filter: blur(14px);
      z-index: 20;
    }

    .brand {
      height: 100%;
      display: flex;
      align-items: center;
      gap: 11px;
      padding: 0 18px;
      border-right: 1px solid var(--ink);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .12em;
    }

    .brand-mark {
      width: 21px;
      height: 21px;
      position: relative;
      border: 2px solid var(--ink);
      transform: rotate(45deg);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 4px;
      background: var(--orange);
    }

    .project-name {
      padding-left: 20px;
      font-size: 12px;
      color: var(--muted);
    }

    .top-actions {
      display: flex;
      align-items: center;
      gap: 18px;
      padding-right: 18px;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .status-dot {
      display: inline-block;
      width: 7px;
      height: 7px;
      margin-right: 7px;
      background: #39b86b;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(57,184,107,.13);
    }

    .stage-shell {
      position: relative;
      display: grid;
      grid-template-columns: 220px minmax(0, 1fr) 220px;
      min-height: 0;
      overflow: hidden;
    }

    .side-panel {
      position: relative;
      z-index: 10;
      padding: 18px;
      background: rgba(243,240,232,.83);
      backdrop-filter: blur(12px);
      font-size: 11px;
    }

    .side-panel.left { border-right: 1px solid var(--ink); }
    .side-panel.right { border-left: 1px solid var(--ink); }

    .panel-kicker {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 9px;
      font-weight: 800;
      letter-spacing: .15em;
      text-transform: uppercase;
    }

    .tree { margin-top: 14px; }
    .tree-row {
      display: grid;
      grid-template-columns: 14px 1fr auto;
      align-items: center;
      min-height: 28px;
      padding: 0 6px;
      border-left: 2px solid transparent;
    }

    .tree-row.active {
      background: var(--ink);
      color: var(--paper);
      border-left-color: var(--orange);
    }

    .tree-row.child { padding-left: 18px; color: var(--muted); }
    .tree-row.active.child { color: var(--paper); }
    .eye { font-size: 9px; opacity: .65; }

    .prop-block {
      padding: 13px 0;
      border-bottom: 1px solid var(--line);
    }

    .prop-label {
      display: flex;
      justify-content: space-between;
      margin-bottom: 10px;
      color: var(--muted);
      font-size: 9px;
      font-weight: 800;
      letter-spacing: .12em;
      text-transform: uppercase;
    }

    .xyz {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 4px;
    }

    .field {
      min-width: 0;
      padding: 7px 5px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.32);
      font-family: "SFMono-Regular", Consolas, monospace;
      font-size: 10px;
      text-align: center;
    }

    .field b { color: var(--orange); font-weight: 800; }

    .stage {
      position: relative;
      min-width: 0;
      overflow: hidden;
      perspective: 1000px;
      isolation: isolate;
    }

    .stage::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(118deg, transparent 48%, rgba(52,215,208,.12) 48.2%, transparent 49%),
        radial-gradient(circle at 72% 30%, rgba(49,87,255,.12), transparent 30%);
      pointer-events: none;
    }

    .scene-meta {
      position: absolute;
      top: 22px;
      left: 24px;
      z-index: 7;
      display: flex;
      align-items: center;
      gap: 12px;
      font-family: "SFMono-Regular", Consolas, monospace;
      font-size: 10px;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .scene-no {
      padding: 5px 7px;
      background: var(--orange);
      color: white;
      font-weight: 800;
    }

    .viewport-guides {
      position: absolute;
      inset: 38px 42px;
      border: 1px solid rgba(23,23,20,.13);
      pointer-events: none;
    }

    .viewport-guides::before,
    .viewport-guides::after {
      content: "";
      position: absolute;
      background: rgba(23,23,20,.12);
    }

    .viewport-guides::before { top: 50%; left: 0; right: 0; height: 1px; }
    .viewport-guides::after { left: 50%; top: 0; bottom: 0; width: 1px; }

    .hero-copy {
      position: absolute;
      left: clamp(28px, 7vw, 92px);
      bottom: clamp(36px, 10vh, 104px);
      z-index: 6;
      width: min(650px, 72%);
      transform: translate3d(calc(var(--camera-x) * -.25), calc(var(--camera-y) * -.25), 0);
    }

    .eyebrow {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
      font-size: 10px;
      font-weight: 800;
      letter-spacing: .18em;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 42px;
      height: 4px;
      background: var(--orange);
    }

    h1 {
      margin: 0;
      max-width: 760px;
      font-size: clamp(54px, 8.3vw, 132px);
      line-height: .76;
      letter-spacing: -.075em;
      text-transform: uppercase;
      font-weight: 900;
    }

    h1 span { display: block; }
    h1 .outline {
      color: transparent;
      -webkit-text-stroke: 1.5px var(--ink);
      transform: translateX(calc(var(--explode) * 34px));
    }

    .hero-foot {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 22px;
      margin-top: 26px;
      padding-top: 12px;
      border-top: 1px solid var(--ink);
    }

    .hero-foot p {
      max-width: 370px;
      margin: 0;
      color: #4f504b;
      font-size: 12px;
      line-height: 1.55;
    }

    .timecode {
      font-family: "SFMono-Regular", Consolas, monospace;
      font-size: 20px;
      font-weight: 700;
      white-space: nowrap;
    }

    .kinetic-object {
      position: absolute;
      z-index: 4;
      top: 50%;
      right: clamp(40px, 9vw, 140px);
      width: clamp(210px, 29vw, 420px);
      aspect-ratio: 1;
      transform-style: preserve-3d;
      transform:
        translate3d(var(--camera-x), calc(-50% + var(--camera-y)), 0)
        rotateX(62deg)
        rotateZ(calc(-31deg + var(--spin)));
      pointer-events: none;
    }

    .core-part {
      --part-x: 0px;
      --part-y: 0px;
      --part-rotation: 0deg;
      --part-scale: 1;
      appearance: none;
      margin: 0;
      padding: 0;
      color: inherit;
      cursor: pointer;
      pointer-events: auto;
    }

    .core-part.is-selected { outline: 3px solid var(--blue); outline-offset: 5px; }

    .orbit {
      position: absolute;
      inset: 7%;
      border: 1px solid var(--ink);
      border-radius: 50%;
      background: transparent;
      transform: translate3d(var(--part-x), var(--part-y), 0) rotateZ(var(--part-rotation)) scale(var(--part-scale));
    }

    .orbit.o2 {
      inset: 20%;
      border-color: var(--blue);
      transform: translate3d(var(--part-x), var(--part-y), calc(24px + var(--explode) * 80px)) rotateZ(var(--part-rotation)) scale(var(--part-scale));
    }

    .orbit::after {
      content: "";
      position: absolute;
      width: 12px;
      height: 12px;
      top: -6px;
      left: 50%;
      background: var(--orange);
      transform: translateX(-50%);
    }

    .slab {
      position: absolute;
      inset: 24%;
      display: grid;
      place-items: center;
      border: 2px solid var(--ink);
      background: rgba(52,215,208,.72);
      box-shadow: 24px 24px 0 rgba(23,23,20,.09);
      transform: translate3d(var(--part-x), var(--part-y), calc(42px + var(--explode) * 110px)) rotateZ(var(--part-rotation)) scale(var(--part-scale));
      transform-style: preserve-3d;
    }

    .core-labels {
      position: absolute;
      inset: 0;
      border: 0;
      background: transparent;
      transform: translate3d(var(--part-x), var(--part-y), 0) rotateZ(var(--part-rotation)) scale(var(--part-scale));
      pointer-events: none;
    }

    .core-labels .axis-label { pointer-events: auto; }

    .slab::before,
    .slab::after {
      content: "";
      position: absolute;
      border: 1px solid var(--ink);
      background: rgba(243,240,232,.75);
    }

    .slab::before {
      inset: 13%;
      transform: translateZ(calc(32px + var(--explode) * 55px));
    }

    .slab::after {
      inset: 31%;
      background: var(--blue);
      transform: translateZ(calc(65px + var(--explode) * 95px));
    }

    .axis-label {
      position: absolute;
      padding: 5px 7px;
      border: 1px solid var(--ink);
      background: var(--paper);
      font: 800 9px/1 "SFMono-Regular", Consolas, monospace;
      letter-spacing: .1em;
    }

    .axis-label.x { right: -7%; top: 48%; }
    .axis-label.y { left: 45%; top: -5%; }

    .editor {
      position: relative;
      z-index: 30;
      display: grid;
      grid-template-columns: 220px minmax(0, 1fr);
      border-top: 1px solid var(--ink);
      background: #1c1c19;
      color: #efede5;
      overflow: hidden;
    }

    .transport {
      padding: 14px 16px;
      border-right: 1px solid rgba(255,255,255,.18);
    }

    .transport-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
    }

    .play {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border: 1px solid rgba(255,255,255,.65);
      background: transparent;
      cursor: pointer;
      transition: .2s ease;
    }

    .play:hover { background: var(--orange); border-color: var(--orange); }
    .play-icon { width: 0; height: 0; border-top: 6px solid transparent; border-bottom: 6px solid transparent; border-left: 10px solid currentColor; margin-left: 2px; }
    .play.is-playing .play-icon { width: 10px; height: 12px; border: 0; border-left: 3px solid; border-right: 3px solid; margin-left: 0; }

    .transport-time {
      font: 700 15px/1 "SFMono-Regular", Consolas, monospace;
    }

    .sequence-title {
      margin-bottom: 6px;
      font-size: 10px;
      color: rgba(255,255,255,.45);
      letter-spacing: .12em;
      text-transform: uppercase;
    }

    .sequence-name { font-size: 12px; font-weight: 750; }

    .timeline {
      position: relative;
      min-width: 0;
      overflow: hidden;
    }

    .ruler {
      height: 38px;
      display: grid;
      grid-template-columns: repeat(10, 1fr);
      align-items: end;
      padding: 0 10px 8px;
      border-bottom: 1px solid rgba(255,255,255,.18);
      color: rgba(255,255,255,.4);
      font: 9px/1 "SFMono-Regular", Consolas, monospace;
      background-image: linear-gradient(to right, rgba(255,255,255,.1) 1px, transparent 1px);
      background-size: 10% 100%;
    }

    .tracks {
      position: relative;
      height: calc(100% - 38px);
      background-image:
        linear-gradient(to right, rgba(255,255,255,.08) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,.08) 1px, transparent 1px);
      background-size: 10% 100%, 100% 38px;
    }

    .track {
      position: relative;
      height: 38px;
      display: flex;
      align-items: center;
      padding-left: 14px;
      font-size: 10px;
      color: rgba(255,255,255,.65);
    }

    .track-name { width: 90px; }

    .key {
      position: absolute;
      width: 9px;
      height: 9px;
      top: 50%;
      background: var(--cyan);
      border: 1px solid #151512;
      transform: translate(-50%, -50%) rotate(45deg);
    }

    .key.orange { background: var(--orange); }
    .key.blue { background: #7088ff; }

    .playhead {
      position: absolute;
      z-index: 8;
      top: 0;
      bottom: 0;
      left: calc(var(--time) * 100%);
      width: 1px;
      background: var(--orange);
      pointer-events: none;
    }

    .playhead::before {
      content: "";
      position: absolute;
      top: 0;
      left: -5px;
      width: 11px;
      height: 11px;
      background: var(--orange);
      clip-path: polygon(0 0, 100% 0, 50% 100%);
    }

    .scrubber {
      position: absolute;
      z-index: 12;
      inset: 0;
      width: 100%;
      height: 38px;
      opacity: 0;
      cursor: ew-resize;
    }

    @media (max-width: 980px) {
      .topbar { grid-template-columns: 170px 1fr auto; }
      .brand { padding: 0 12px; }
      .stage-shell { grid-template-columns: 170px minmax(0, 1fr); }
      .side-panel.right { display: none; }
      .editor { grid-template-columns: 170px minmax(0, 1fr); }
      .hero-copy { width: 78%; }
      .kinetic-object { right: 2vw; opacity: .8; }
    }

    @media (max-width: 700px) {
      body { overflow: auto; }
      .app { grid-template-rows: 52px minmax(600px, 1fr) 220px; }
      .topbar { grid-template-columns: 1fr auto; }
      .project-name, .side-panel { display: none; }
      .brand { border-right: 0; }
      .top-actions span:first-child { display: none; }
      .stage-shell { display: block; }
      .stage { height: 100%; }
      .hero-copy { left: 22px; bottom: 64px; width: calc(100% - 44px); }
      h1 { font-size: clamp(58px, 19vw, 92px); }
      .hero-foot { align-items: flex-start; flex-direction: column; }
      .kinetic-object { top: 32%; right: -70px; width: 300px; opacity: .58; }
      .editor { grid-template-columns: 118px minmax(560px, 1fr); overflow-x: auto; }
      .transport { padding: 12px; }
      .transport-time { font-size: 11px; }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; }
    }
  

/* Production synchronization additions */
.top-actions a{color:inherit;text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:2px}.sequence-name #frameCount{display:block;margin-top:8px;color:rgba(255,255,255,.45);font:9px/1.3 "SFMono-Regular",Consolas,monospace}.track-name{position:relative;z-index:2}.ruler span:last-child{text-align:right}.state-pulse{animation:statePulse .36s ease}@keyframes statePulse{50%{background:rgba(52,215,208,.24)}}

/* Editable timeline workspace */
:root { --timeline-label: 136px; --timeline-actions: 36px; --type-offset: 0px; }
button, select, input { font: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.app { height: 100vh; min-height: 0; grid-template-rows: 54px 42px minmax(0, 1fr) 294px; overflow: hidden; }
.topbar { grid-template-columns: 220px minmax(210px, 1fr) auto; }
.scene-bar { display: flex; align-items: stretch; justify-content: space-between; min-width: 0; border-bottom: 1px solid var(--ink); background: rgba(243,240,232,.96); z-index: 18; }
.scene-tabs { display: flex; min-width: 0; overflow-x: auto; scrollbar-width: thin; }
.scene-tab { position: relative; flex: 0 0 auto; min-width: 112px; max-width: 190px; padding: 0 28px 0 14px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); text-align: left; cursor: pointer; font-size: 10px; font-weight: 750; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.scene-tab::after { content: attr(data-index); position: absolute; right: 10px; color: rgba(23,23,20,.32); font: 8px "SFMono-Regular",Consolas,monospace; }
.scene-tab:hover { background: rgba(49,87,255,.07); color: var(--ink); }
.scene-tab.is-active { background: var(--ink); color: var(--paper); }
.scene-tab.is-active::after { color: rgba(255,255,255,.5); }
.scene-actions { display: flex; flex: 0 0 auto; border-left: 1px solid var(--ink); }
.scene-actions button { min-width: 68px; padding: 0 12px; border: 0; border-left: 1px solid var(--line); background: transparent; cursor: pointer; font-size: 9px; font-weight: 750; }
.scene-actions button:hover:not(:disabled) { background: var(--blue); color: white; }
.scene-actions button.danger:hover:not(:disabled) { background: #bf3529; }
.scene-actions button:disabled { opacity: .35; cursor: not-allowed; }
.layer-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; margin: 12px 0; }
.layer-actions button { min-height: 27px; border: 1px solid var(--line); background: rgba(255,255,255,.42); cursor: pointer; font-size: 8px; font-weight: 750; }
.layer-actions button:hover:not(:disabled) { border-color: var(--blue); color: var(--blue); }
.layer-actions button.danger:hover:not(:disabled) { border-color: #bf3529; color: #bf3529; }
.layer-actions button:disabled { opacity: .32; cursor: not-allowed; }
.custom-layer-row { display: grid; grid-template-columns: minmax(0,1fr) 24px 24px; padding: 0; border: 1px solid transparent; }
.custom-layer-row.is-selected { border-color: var(--blue); background: rgba(49,87,255,.08); }
.custom-layer-select, .custom-layer-toggle { border: 0; background: transparent; cursor: pointer; }
.custom-layer-select { display: grid; grid-template-columns: 18px minmax(0,1fr); gap: 4px; align-items: center; min-width: 0; padding: 6px 4px; text-align: left; }
.custom-layer-select strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 9px; }
.custom-layer-toggle { padding: 0; color: var(--muted); }
.custom-layer-canvas { position: absolute; z-index: 8; inset: 0; pointer-events: none; overflow: hidden; }
.custom-layer-node { position: absolute; display: block; margin: 0; padding: 0; border: 1px solid transparent; background: transparent; pointer-events: auto; cursor: pointer; transform-origin: center; white-space: nowrap; }
.custom-layer-node.text { font-weight: 800; line-height: 1; letter-spacing: -.04em; }
.custom-layer-node.shape { box-shadow: 18px 18px 0 rgba(23,23,20,.08); }
.custom-layer-node.is-selected { outline: 2px solid var(--blue); outline-offset: 5px; }
.layer-type-dialog { width: min(520px, calc(100vw - 32px)); }
.layer-type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 4px 18px 10px; }
.layer-type-grid button { display: grid; gap: 5px; min-height: 90px; padding: 16px; border: 1px solid var(--ink); background: rgba(255,255,255,.46); text-align: left; cursor: pointer; }
.layer-type-grid button:hover { background: var(--blue); color: white; }
.layer-type-grid strong { font-size: 16px; }
.layer-type-grid span { color: var(--muted); font-size: 9px; }
.layer-type-grid button:hover span { color: rgba(255,255,255,.75); }
.two-col { grid-template-columns: 1fr 1fr; }
.layer-transform-panel { border-color: var(--blue); background: rgba(49,87,255,.04); }
.layer-transform-panel .wide-field { margin-top: 8px; }
.inline-layer-field { margin: 10px 0 0; }
.inline-layer-field input { height: 34px; }
.project-name { display: flex; align-items: center; gap: 7px; min-width: 0; }
.project-name input { width: min(430px, 100%); border: 0; border-bottom: 1px solid transparent; background: transparent; color: var(--ink); padding: 5px 3px; font-size: 12px; }
.project-name input:hover, .project-name input:focus { border-bottom-color: var(--ink); }
.top-actions { gap: 10px; white-space: nowrap; }
.text-action { border: 0; border-bottom: 1px solid var(--ink); padding: 3px 0; background: transparent; cursor: pointer; font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.text-action:hover { color: var(--orange); border-color: var(--orange); }
.text-action.danger:hover { color: #bf3529; }
.file-action { position: relative; cursor: pointer; }
.file-action input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
#saveStatus.is-dirty .status-dot { background: var(--orange); box-shadow: 0 0 0 3px rgba(244,90,36,.15); }
.stage-shell { grid-template-columns: 220px minmax(0, 1fr) 260px; }
.side-panel.left { grid-column: 1; }
.stage { grid-column: 2; }
.side-panel.right { grid-column: 3; }
.side-panel { overflow-y: auto; }
.side-panel { overflow: auto; }
.tree-button { width: 100%; border: 0; background: transparent; color: inherit; text-align: left; cursor: pointer; }
.tree-button:hover:not(.active) { background: rgba(23,23,20,.07); }
.tree-row.is-hidden { opacity: .45; }
.tree-row.tree-group { margin-top: 2px; }
.tree-row.grandchild { min-height: 24px; padding-left: 34px; color: var(--muted); font-size: 10px; }
.tree-row.grandchild.active { color: var(--paper); }
.track-dot { color: var(--cyan); font-size: 7px; }
.eye[data-visibility] { width: 22px; padding: 5px; margin: -5px; text-align: center; }
.left-tools { margin-top: 24px; }
.stack-field { display: grid; grid-template-columns: 1fr minmax(64px, auto) auto; align-items: center; gap: 7px; margin-top: 10px; color: var(--muted); font-size: 10px; }
.stack-field input, .stack-field select { min-width: 0; width: 100%; border: 1px solid var(--line); background: rgba(255,255,255,.45); color: var(--ink); padding: 6px; }
.stack-field b { color: var(--muted); font-size: 9px; }
.hint { color: var(--muted); font-size: 10px; line-height: 1.55; margin: 18px 0 0; }
.mini-action { border: 0; background: transparent; color: var(--blue); padding: 0; cursor: pointer; font-size: 9px; font-weight: 800; text-transform: uppercase; }
.mini-action:hover { color: var(--orange); }
.input-grid .field { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 3px; padding: 0 4px; }
.field input { width: 100%; min-width: 0; border: 0; background: transparent; color: var(--ink); padding: 7px 2px; text-align: right; font: inherit; }
.wide-field { display: grid; grid-template-columns: 1fr auto; align-items: center; border: 1px solid var(--line); background: rgba(255,255,255,.32); padding: 0 8px; }
.wide-field input { width: 100%; border: 0; background: transparent; padding: 8px 0; color: var(--ink); font: 10px "SFMono-Regular",Consolas,monospace; }
.wide-field b { color: var(--muted); font-size: 9px; }
.range-field { display: grid; grid-template-columns: 1fr 58px; gap: 8px; align-items: center; }
.range-field input[type="number"] { width: 100%; border: 1px solid var(--line); background: rgba(255,255,255,.35); padding: 5px; font: 10px "SFMono-Regular",Consolas,monospace; }
.meter { height: 5px; margin-top: 8px; background: rgba(23,23,20,.12); overflow: hidden; }
.meter > div { height: 100%; width: 0; background: var(--blue); }
.panel-button { width: 100%; margin-top: 10px; padding: 8px; border: 1px solid var(--line); background: transparent; cursor: pointer; font-size: 10px; font-weight: 800; text-transform: uppercase; }
.panel-button.danger:hover:not(:disabled) { border-color: #bf3529; color: #bf3529; }
.panel-button:disabled { opacity: .38; cursor: not-allowed; }
.key-editor { padding-bottom: 20px; }
.kinetic-object { border: 0; padding: 0; background: transparent; color: inherit; cursor: grab; touch-action: none; }
.kinetic-object.is-dragging { cursor: grabbing; }
.kinetic-object:hover .slab, .kinetic-object:focus-visible .slab { box-shadow: 24px 24px 0 rgba(23,23,20,.09), 0 0 0 5px rgba(49,87,255,.12); }
.hero-copy { transform: translate3d(var(--type-x), calc(var(--type-y) + var(--type-offset)), 0) rotate(var(--type-rotation)) scale(var(--type-scale)); opacity: var(--type-opacity); transform-origin: left bottom; cursor: move; touch-action: none; }
.hero-copy.is-selected { outline: 2px solid var(--blue); outline-offset: 8px; }
.hero-copy.is-dragging { cursor: grabbing; }
.stage.camera-hidden::after { content: "CAMERA HIDDEN"; position: absolute; inset: 45% auto auto 50%; transform: translate(-50%,-50%); color: rgba(23,23,20,.25); font: 800 11px "SFMono-Regular",Consolas,monospace; letter-spacing: .18em; }
.stage { cursor: grab; touch-action: none; }
.stage:active { cursor: grabbing; }
[hidden] { display: none !important; }

.editor { grid-template-columns: 220px minmax(0, 1fr); }
.transport { padding: 12px 14px; overflow: auto; }
.transport-top { margin-bottom: 10px; }
.transport-controls { display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; }
.icon-button { min-width: 0; height: 32px; border: 1px solid rgba(255,255,255,.25); background: transparent; color: #efede5; cursor: pointer; font: 9px "SFMono-Regular",Consolas,monospace; }
.icon-button:hover { border-color: var(--cyan); color: var(--cyan); }
.play { width: auto; height: 32px; }
.transport-time { margin: 8px 0 13px; font-size: 17px; }
.transport-options { display: grid; grid-template-columns: 1fr 1.3fr 1.3fr; gap: 6px; margin-top: 12px; font-size: 8px; color: rgba(255,255,255,.55); text-transform: uppercase; }
.transport-options label { display: flex; align-items: center; gap: 4px; }
.transport-options select { width: 100%; min-width: 0; border: 1px solid rgba(255,255,255,.18); background: #282823; color: #efede5; padding: 4px; font-size: 9px; }
.timeline-panel { display: grid; grid-template-rows: 42px 34px minmax(0, 1fr) 28px; min-width: 0; overflow: hidden; }
.timeline-toolbar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; padding: 6px 12px; border-bottom: 1px solid rgba(255,255,255,.16); }
.timeline-toolbar > div:first-child { display: flex; gap: 5px; }
.toolbar-button { height: 28px; border: 1px solid rgba(255,255,255,.22); background: transparent; color: #efede5; padding: 0 9px; cursor: pointer; font-size: 9px; font-weight: 700; }
.toolbar-button:hover:not(:disabled) { border-color: var(--cyan); }
.toolbar-button.primary { background: var(--blue); border-color: var(--blue); }
.toolbar-button.danger { border-color: rgba(239,106,61,.7); color: #ff9b78; }
.toolbar-button.danger:hover:not(:disabled) { border-color: var(--orange); background: rgba(239,106,61,.12); }
.toolbar-button:disabled { opacity: .35; cursor: not-allowed; }
.selection-readout { display: flex; gap: 10px; align-items: center; font: 9px "SFMono-Regular",Consolas,monospace; color: rgba(255,255,255,.56); }
.selection-readout b { color: var(--cyan); }
.zoom-control { justify-self: end; display: flex; align-items: center; gap: 7px; color: rgba(255,255,255,.55); font-size: 9px; text-transform: uppercase; }
.zoom-control input { width: 90px; }
.timeline-scroll { min-width: 0; overflow: auto; }
.timeline { position: relative; min-width: 100%; min-height: 100%; height: auto; overflow: visible; }
.track-groups { display: flex; min-width: 0; overflow-x: auto; border-bottom: 1px solid rgba(255,255,255,.14); background: #20201d; }
.track-group-button { display: grid; grid-template-columns: 14px minmax(60px,1fr) 20px; align-items: center; gap: 4px; flex: 0 0 auto; min-width: 116px; max-width: 180px; border: 0; border-right: 1px solid rgba(255,255,255,.12); background: transparent; color: rgba(255,255,255,.5); padding: 0 9px; cursor: pointer; font-size: 9px; }
.track-group-button strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: left; }
.track-group-button b { color: rgba(255,255,255,.3); font: 8px "SFMono-Regular",Consolas,monospace; }
.track-group-button.is-active { background: var(--blue); color: white; }
.track-group-button.is-active b { color: rgba(255,255,255,.7); }
.ruler { display: grid; grid-template-columns: var(--timeline-label) minmax(0, 1fr) var(--timeline-actions); padding: 0; height: 36px; background-size: auto; }
.ruler-title { display: flex; align-items: end; padding: 0 12px 8px; border-right: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.28); }
.ruler-lane { position: relative; min-width: 0; }
.ruler-lane::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(to right, rgba(255,255,255,.09) 1px, transparent 1px); background-size: 10% 100%; }
.ruler-lane span { position: absolute; bottom: 8px; transform: translateX(-50%); }
.ruler-actions { display: grid; place-items: end center; padding-bottom: 8px; border-left: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.28); font-size: 8px; }
.tracks { height: auto; min-height: calc(100% - 36px); background-size: auto 100%, 100% 38px; }
.track { display: grid; grid-template-columns: var(--timeline-label) minmax(0, 1fr) var(--timeline-actions); padding-left: 0; height: 38px; }
.track.is-selected { background: rgba(49,87,255,.12); }
.track-name-cell { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 24px; height: 100%; border-right: 1px solid rgba(255,255,255,.14); background: rgba(28,28,25,.92); }
.track-name { width: 100%; height: 100%; border: 0; background: transparent; color: rgba(255,255,255,.68); padding: 0 4px 0 12px; text-align: left; cursor: pointer; font-size: 9px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.track-remove { width: 24px; height: 100%; border: 0; background: transparent; color: rgba(255,255,255,.36); cursor: pointer; font-size: 15px; }
.track-remove:hover { color: #ff7e70; background: rgba(191,53,41,.18); }
.track.is-selected .track-name { color: white; box-shadow: inset 3px 0 0 var(--blue); }
.track-lane { position: relative; height: 100%; cursor: crosshair; background-image: linear-gradient(to right, rgba(255,255,255,.07) 1px, transparent 1px); background-size: 10% 100%; }
.track-visibility { display: grid; place-items: center; width: 100%; height: 100%; padding: 0; border: 0; border-left: 1px solid rgba(255,255,255,.14); background: rgba(28,28,25,.92); color: rgba(255,255,255,.72); cursor: pointer; }
.track-visibility:hover { color: white; background: rgba(49,87,255,.2); }
.track-eye { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.track-eye-closed { display: none; }
.track.is-content-hidden .track-eye-open { display: none; }
.track.is-content-hidden .track-eye-closed { display: block; }
.track.is-content-hidden .track-lane { opacity: .18; pointer-events: none; background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.08) 0 1px, transparent 1px 8px); }
.track.is-content-hidden .track-name { color: rgba(255,255,255,.34); }
.track.is-content-hidden .key { opacity: 0; pointer-events: none; }
.key { width: 13px; height: 13px; top: 50%; border: 1px solid #151512; padding: 0; cursor: ew-resize; touch-action: none; }
.key:hover { box-shadow: 0 0 0 4px rgba(255,255,255,.12); }
.key.is-selected { box-shadow: 0 0 0 3px white, 0 0 0 5px var(--blue); z-index: 6; }
.key::after { content: attr(data-label); position: absolute; left: 15px; top: -21px; width: max-content; padding: 4px 6px; border: 1px solid rgba(255,255,255,.28); background: #11110f; color: white; opacity: 0; pointer-events: none; transform: rotate(-45deg); transform-origin: left bottom; font: 8px/1 "SFMono-Regular",Consolas,monospace; transition: opacity .12s ease; }
.key:hover::after, .key.is-selected::after { opacity: 1; }
.playhead { z-index: 10; top: 0; bottom: 0; left: calc(var(--timeline-label) + var(--time) * (100% - var(--timeline-label) - var(--timeline-actions))); }
.scrubber { left: var(--timeline-label); right: var(--timeline-actions); width: calc(100% - var(--timeline-label) - var(--timeline-actions)); height: 36px; }
.editor-status { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 12px; border-top: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.38); font: 8px "SFMono-Regular",Consolas,monospace; white-space: nowrap; }
.toast { position: fixed; z-index: 100; right: 18px; bottom: 18px; max-width: 360px; padding: 11px 14px; background: var(--ink); color: var(--paper); font-size: 11px; box-shadow: 8px 8px 0 rgba(49,87,255,.22); transform: translateY(30px); opacity: 0; pointer-events: none; transition: .2s ease; }
.toast.is-visible { transform: translateY(0); opacity: 1; }
.export-dialog { width: min(720px, calc(100vw - 32px)); padding: 0; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); box-shadow: 18px 18px 0 rgba(23,23,20,.16); }
.export-dialog::backdrop { background: rgba(23,23,20,.48); backdrop-filter: blur(5px); }
.export-dialog header { display: flex; align-items: center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--ink); }
.export-dialog header span { color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .15em; }
.export-dialog h2 { margin: 4px 0 0; font-size: 20px; }
.export-dialog header button { width: 34px; height: 34px; border: 1px solid var(--ink); background: transparent; cursor: pointer; font-size: 20px; }
.export-dialog p { margin: 16px 18px 10px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.export-dialog textarea { display: block; width: calc(100% - 36px); height: 320px; margin: 0 18px; resize: vertical; border: 1px solid var(--line); background: rgba(255,255,255,.5); color: var(--ink); padding: 12px; font: 10px/1.55 "SFMono-Regular",Consolas,monospace; }
.export-dialog footer { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 18px 18px; }
.export-dialog .toolbar-button { display: inline-grid; place-items: center; min-width: 110px; color: var(--ink); text-decoration: none; }
.export-dialog .toolbar-button.primary { color: white; }
.reset-dialog { width: min(480px, calc(100vw - 32px)); }
.reset-dialog .reset-confirm { background: #bf3529; border-color: #bf3529; }
.track-dialog { width: min(520px, calc(100vw - 32px)); }
.track-library { display: grid; gap: 8px; padding: 4px 18px 8px; }
.track-library-item { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 54px; padding: 9px 10px; border: 1px solid var(--line); }
.track-library-item div { display: grid; gap: 4px; }
.track-library-item strong { font-size: 12px; }
.track-library-item span { color: var(--muted); font-size: 10px; }
.track-library-item .toolbar-button { min-width: 74px; color: var(--ink); }
.track-library-item .toolbar-button:disabled { border-color: transparent; }
.track-empty { display: block; width: calc(100% - 24px); min-height: 54px; margin: 12px; border: 1px dashed rgba(255,255,255,.3); background: transparent; color: rgba(255,255,255,.62); cursor: pointer; }
.track-empty:hover { border-color: var(--cyan); color: white; }
body.is-key-dragging .stage::after { content: "画面已冻结 · 松开后预览"; position: absolute; z-index: 20; right: 14px; top: 14px; padding: 7px 9px; border: 1px solid rgba(255,255,255,.32); background: rgba(17,17,15,.78); color: white; font: 9px/1 "SFMono-Regular",Consolas,monospace; pointer-events: none; }
body.is-key-dragging .key.is-selected { box-shadow: 0 0 0 3px white, 0 0 0 6px var(--orange); }
.color-field input[type="color"] { width: 58px; height: 28px; padding: 2px; border: 1px solid var(--line); background: white; cursor: pointer; }
.color-field b { min-width: 62px; font: 8px "SFMono-Regular",Consolas,monospace; text-transform: uppercase; }
.scene-name-dialog { width: min(480px, calc(100vw - 32px)); }
.dialog-field { display: grid; gap: 7px; margin: 18px; color: var(--muted); font-size: 10px; font-weight: 750; }
.dialog-field input { width: 100%; height: 40px; border: 1px solid var(--ink); background: white; padding: 0 11px; color: var(--ink); }
.panel-toggle { position: absolute; z-index: 35; top: 8px; width: 24px; height: 30px; border: 1px solid var(--ink); background: var(--paper); cursor: pointer; font-weight: 900; }
.left-toggle { left: 208px; }
.right-toggle { right: 248px; }
.left-panel-collapsed .stage-shell { grid-template-columns: 0 minmax(0,1fr) 260px; }
.left-panel-collapsed .side-panel.left { display: none; }
.left-panel-collapsed .left-toggle { left: 4px; }
.right-panel-collapsed .stage-shell { grid-template-columns: 220px minmax(0,1fr) 0; }
.right-panel-collapsed .side-panel.right { display: none; }
.right-panel-collapsed .right-toggle { right: 4px; }
.left-panel-collapsed.right-panel-collapsed .stage-shell { grid-template-columns: 0 minmax(0,1fr) 0; }
.console-toggle { position: absolute; z-index: 45; right: 10px; bottom: 7px; height: 24px; border: 1px solid rgba(255,255,255,.25); background: #242420; color: #efede5; padding: 0 9px; cursor: pointer; font-size: 8px; }
.console-collapsed .app { grid-template-rows: 54px 42px minmax(0,1fr) 38px; }
.console-collapsed .editor { display: block; min-height: 38px; }
.console-collapsed .editor .transport, .console-collapsed .editor .timeline-panel { display: none; }

@media (max-width: 1180px) {
  .top-actions #viewportSize, .top-actions #saveStatus { display: none; }
  .stage-shell { grid-template-columns: 190px minmax(0, 1fr) 230px; }
  .editor { grid-template-columns: 190px minmax(0, 1fr); }
  .transport-options { grid-template-columns: 1fr; }
}
@media (max-width: 980px) {
  .topbar { grid-template-columns: 170px minmax(160px, 1fr) auto; }
  .stage-shell { grid-template-columns: 170px minmax(0, 1fr); }
  .side-panel.right { display: none; }
  .editor { grid-template-columns: 170px minmax(720px, 1fr); overflow-x: auto; }
  .timeline-toolbar { grid-template-columns: 1fr auto; }
  .selection-readout { display: none; }
}
@media (max-width: 700px) {
  body { overflow: auto; }
  .app { display: block; height: auto; min-height: 100vh; overflow: visible; }
  .topbar { position: sticky; top: 0; display: grid; grid-template-columns: 160px minmax(0, 1fr); min-height: 52px; height: auto; z-index: 80; }
  .scene-bar { position: sticky; top: 52px; min-height: 42px; z-index: 75; overflow-x: auto; }
  .scene-actions button { min-width: 58px; padding: 0 8px; }
  .project-name { display: none; }
  .top-actions { min-width: 0; max-width: none; overflow-x: auto; padding: 8px 12px; gap: 12px; }
  .top-actions .text-action, .top-actions .file-action { display: inline-block; flex: 0 0 auto; }
  .top-actions #viewportSize, .top-actions #saveStatus, .top-actions a { display: none; }
  .stage-shell { display: flex; flex-direction: column; overflow: visible; }
  .stage { order: 1; height: 520px; flex: 0 0 520px; }
  .side-panel { display: block; overflow: visible; backdrop-filter: none; }
  .side-panel.left { order: 2; border: 0; border-top: 1px solid var(--ink); }
  .side-panel.right { display: block; order: 3; border: 0; border-top: 1px solid var(--ink); }
  .tree { display: block; }
  .tree-row.tree-group, .tree-row.grandchild { margin: 0; }
  .left-tools { margin-top: 18px; }
  .hero-copy { left: 22px; bottom: 54px; width: calc(100% - 44px); }
  .kinetic-object { top: 29%; right: -68px; width: 290px; }
  .editor { display: grid; grid-template-columns: 1fr; overflow: visible; }
  .transport { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .transport-controls { grid-template-columns: repeat(6, minmax(44px, 1fr)); }
  .transport-options { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .timeline-panel { height: 350px; min-width: 0; }
  .timeline-toolbar { position: static; min-width: 0; grid-template-columns: 1fr auto; overflow-x: auto; }
  .timeline-toolbar > div:first-child { min-width: max-content; }
  .timeline-scroll { min-height: 250px; }
  .timeline { min-width: 760px; }
  .editor-status { min-width: 760px; }
}
@media (max-width: 700px) {
  .left-panel-collapsed .side-panel.left, .right-panel-collapsed .side-panel.right { display: none !important; }
  .panel-toggle { position: fixed; top: 104px; z-index: 95; }
  .left-toggle { left: 4px; }
  .right-toggle { right: 4px; }
  .console-collapsed .editor { height: 38px; min-height: 38px; }
}