diff --git a/ts/index.html b/ts/index.html
index 51bf104..bdbfa6e 100644
--- a/ts/index.html
+++ b/ts/index.html
@@ -6,632 +6,7 @@
   <meta name="viewport" content="width=device-width,initial-scale=1.0" />
   <title>MonoDisplay Editor</title>
   <script>!function(){var t=localStorage.getItem('theme');t&&document.documentElement.setAttribute('data-theme',t)}();</script>
-  <style>
-    :root {
-      --bg: #111;
-      --bg-bar: #1a1a1a;
-      --bg-raised: #161616;
-      --bg-hover: #1b1b1b;
-      --bg-hover2: #222;
-      --bg-sunken: #141414;
-      --bg-accent: #141e14;
-      --bg-active: #182018;
-      --bg-deep: #0f0f0f;
-      --bg-input: #0a0a0a;
-      --bg-canvas: #000;
-      --bg-xhover: #1e1010;
-      --bg-overlay: rgba(0,0,0,.6);
-      --bd: #2a2a2a;
-      --bd-inner: #1e1e1e;
-      --bd-deep: #1c1c1c;
-      --bd-card: #222;
-      --bd-btn: #2d2d2d;
-      --bd-type: #252525;
-      --bd-active: #2b3d2b;
-      --bd-hover: #444;
-      --bd-strong: #333;
-      --tx: #ccc;
-      --tx-hover: #bbb;
-      --tx-sub: #888;
-      --tx-label: #777;
-      --tx-meta: #666;
-      --tx-dim: #555;
-      --tx-faint: #444;
-      --tx-ghost: #333;
-      --tx-file: #3a3a3a;
-      --tx-empty: #2e2e2e;
-      --ac: #33ff66;
-      --dirty: #886622
-    }
-
-    @media (prefers-color-scheme: light) {
-      :root:not([data-theme="dark"]) {
-        --bg: #f5f5f5;
-        --bg-bar: #e8e8e8;
-        --bg-raised: #efefef;
-        --bg-hover: #e5e5e5;
-        --bg-hover2: #e0e0e0;
-        --bg-sunken: #ebebeb;
-        --bg-accent: #e8f5e8;
-        --bg-active: #dff0df;
-        --bg-deep: #f0f0f0;
-        --bg-input: #fff;
-        --bg-canvas: #fff;
-        --bg-xhover: #ffe8e8;
-        --bg-overlay: rgba(0,0,0,.4);
-        --bd: #d0d0d0;
-        --bd-inner: #ddd;
-        --bd-deep: #e0e0e0;
-        --bd-card: #ddd;
-        --bd-btn: #ccc;
-        --bd-type: #d8d8d8;
-        --bd-active: #7dc87d;
-        --bd-hover: #bbb;
-        --bd-strong: #ccc;
-        --tx: #222;
-        --tx-hover: #333;
-        --tx-sub: #555;
-        --tx-label: #666;
-        --tx-meta: #777;
-        --tx-dim: #888;
-        --tx-faint: #999;
-        --tx-ghost: #aaa;
-        --tx-file: #aaa;
-        --tx-empty: #bbb;
-        --ac: #1a9940;
-        --dirty: #b37a00
-      }
-    }
-
-    [data-theme="light"] {
-      --bg: #f5f5f5;
-      --bg-bar: #e8e8e8;
-      --bg-raised: #efefef;
-      --bg-hover: #e5e5e5;
-      --bg-hover2: #e0e0e0;
-      --bg-sunken: #ebebeb;
-      --bg-accent: #e8f5e8;
-      --bg-active: #dff0df;
-      --bg-deep: #f0f0f0;
-      --bg-input: #fff;
-      --bg-canvas: #fff;
-      --bg-xhover: #ffe8e8;
-      --bg-overlay: rgba(0,0,0,.4);
-      --bd: #d0d0d0;
-      --bd-inner: #ddd;
-      --bd-deep: #e0e0e0;
-      --bd-card: #ddd;
-      --bd-btn: #ccc;
-      --bd-type: #d8d8d8;
-      --bd-active: #7dc87d;
-      --bd-hover: #bbb;
-      --bd-strong: #ccc;
-      --tx: #222;
-      --tx-hover: #333;
-      --tx-sub: #555;
-      --tx-label: #666;
-      --tx-meta: #777;
-      --tx-dim: #888;
-      --tx-faint: #999;
-      --tx-ghost: #aaa;
-      --tx-file: #aaa;
-      --tx-empty: #bbb;
-      --ac: #1a9940;
-      --dirty: #b37a00
-    }
-
-    *,
-    *::before,
-    *::after {
-      box-sizing: border-box;
-      margin: 0;
-      padding: 0
-    }
-
-    body {
-      background: var(--bg);
-      color: var(--tx);
-      font-family: monospace;
-      height: 100vh;
-      display: flex;
-      flex-direction: column;
-      overflow: hidden;
-      font-size: 12px
-    }
-
-    #topbar {
-      height: 36px;
-      background: var(--bg-bar);
-      border-bottom: 1px solid var(--bd);
-      display: flex;
-      align-items: center;
-      gap: 8px;
-      padding: 0 12px;
-      flex-shrink: 0
-    }
-
-    #topbar .app-name {
-      color: var(--tx-dim);
-      font-size: 11px;
-      letter-spacing: .12em;
-      text-transform: uppercase;
-      margin-right: 4px
-    }
-
-    .tb-btn {
-      background: var(--bg-raised);
-      color: var(--tx-sub);
-      border: 1px solid var(--bd-btn);
-      border-radius: 3px;
-      padding: 3px 10px;
-      font-family: monospace;
-      font-size: 11px;
-      cursor: pointer;
-      display: flex;
-      align-items: center;
-      gap: 5px;
-      white-space: nowrap
-    }
-
-    .tb-btn:hover {
-      background: var(--bg-hover2);
-      color: var(--tx-hover);
-      border-color: var(--bd-hover)
-    }
-
-    .tb-btn svg {
-      width: 13px;
-      height: 13px;
-      stroke: currentColor;
-      fill: none;
-      stroke-width: 1.8;
-      stroke-linecap: round;
-      stroke-linejoin: round;
-      flex-shrink: 0
-    }
-
-    #file-input {
-      display: none
-    }
-
-    #filename {
-      color: var(--tx-file);
-      font-size: 11px;
-      margin-left: 2px;
-      max-width: 200px;
-      overflow: hidden;
-      text-overflow: ellipsis;
-      white-space: nowrap
-    }
-
-    .tb-sep {
-      width: 1px;
-      height: 18px;
-      background: var(--bd)
-    }
-
-    .dirty {
-      color: var(--dirty) !important
-    }
-
-    #main {
-      flex: 1;
-      display: flex;
-      min-height: 0
-    }
-
-    #left {
-      width: 48%;
-      border-right: 1px solid var(--bd-inner);
-      display: flex;
-      flex-direction: column;
-      padding: 14px;
-      gap: 10px;
-      overflow-y: auto;
-      flex-shrink: 0
-    }
-
-    #display-box {
-      width: 100%;
-      aspect-ratio: 2/1;
-      background: var(--bg-canvas);
-      border: 1px solid var(--bd);
-      border-radius: 3px;
-      overflow: hidden
-    }
-
-    #canvas_root {
-      width: 100%;
-      height: 100%;
-      display: block;
-      image-rendering: pixelated;
-      image-rendering: crisp-edges
-    }
-
-    .pv-label {
-      font-size: 10px;
-      color: var(--tx-ghost);
-      letter-spacing: .1em;
-      text-transform: uppercase
-    }
-
-    #demo-btns {
-      display: flex;
-      flex-wrap: wrap;
-      gap: 5px;
-      margin-top: 6px
-    }
-
-    #sec-meta {
-      background: var(--bg-sunken);
-      border: 1px solid var(--bd-inner);
-      border-radius: 3px;
-      padding: 8px 10px;
-      display: flex;
-      flex-direction: column;
-      gap: 6px
-    }
-
-    .meta-row {
-      display: flex;
-      align-items: center;
-      gap: 8px;
-      font-size: 11px
-    }
-
-    .meta-row label {
-      color: var(--tx-faint);
-      min-width: 90px
-    }
-
-    .meta-val {
-      color: var(--tx-meta)
-    }
-
-    .green {
-      color: var(--ac)
-    }
-
-    .flag-check {
-      display: flex;
-      align-items: center;
-      gap: 5px;
-      font-size: 11px;
-      color: var(--tx-dim);
-      cursor: pointer
-    }
-
-    .flag-check input {
-      accent-color: var(--ac);
-      cursor: pointer
-    }
-
-    #right {
-      flex: 1;
-      display: flex;
-      flex-direction: column;
-      min-height: 0;
-      overflow: hidden
-    }
-
-    #right-hdr {
-      height: 36px;
-      background: var(--bg-sunken);
-      border-bottom: 1px solid var(--bd-inner);
-      display: flex;
-      align-items: center;
-      padding: 0 10px;
-      gap: 6px;
-      flex-shrink: 0
-    }
-
-    #right-hdr .rh-title {
-      flex: 1;
-      color: var(--tx-faint);
-      font-size: 11px;
-      letter-spacing: .08em;
-      text-transform: uppercase
-    }
-
-    #sections-wrap {
-      flex: 1;
-      overflow-y: auto;
-      padding: 8px
-    }
-
-    .empty-state {
-      color: var(--tx-empty);
-      font-size: 11px;
-      padding: 28px 16px;
-      text-align: center;
-      line-height: 2
-    }
-
-    /* section card */
-    .sec-card {
-      border: 1px solid var(--bd-card);
-      border-radius: 3px;
-      margin-bottom: 5px;
-      overflow: hidden
-    }
-
-    .sec-card.active {
-      border-color: var(--bd-active)
-    }
-
-    .sec-hdr {
-      display: flex;
-      align-items: center;
-      gap: 7px;
-      padding: 6px 8px;
-      cursor: pointer;
-      user-select: none;
-      background: var(--bg-raised);
-      position: relative
-    }
-
-    .sec-hdr:hover {
-      background: var(--bg-hover)
-    }
-
-    .sec-card.active .sec-hdr {
-      background: var(--bg-active)
-    }
-
-    .sec-arrow {
-      color: var(--tx-ghost);
-      font-size: 13px;
-      line-height: 1;
-      transition: transform .12s;
-      flex-shrink: 0
-    }
-
-    .sec-card.open .sec-arrow {
-      transform: rotate(90deg)
-    }
-
-    .sec-label {
-      flex: 1;
-      color: var(--tx-label);
-      font-size: 11px
-    }
-
-    .sec-badge {
-      font-size: 10px;
-      color: var(--ac);
-      border: 1px solid var(--bd-active);
-      background: var(--bg-accent);
-      border-radius: 2px;
-      padding: 1px 6px;
-      flex-shrink: 0
-    }
-
-    /* red ×  - section & element */
-    .x-btn {
-      background: none;
-      border: none;
-      color: var(--bd);
-      cursor: pointer;
-      font-size: 15px;
-      line-height: 1;
-      padding: 2px 5px;
-      border-radius: 2px;
-      flex-shrink: 0;
-      transition: color .1s, background .1s
-    }
-
-    .x-btn:hover {
-      color: #ff4444;
-      background: var(--bg-xhover)
-    }
-
-    /* element */
-    .el-list {
-      background: var(--bg-deep);
-      border-top: 1px solid var(--bd-deep);
-      padding: 6px
-    }
-
-    .el-item {
-      border: 1px solid var(--bd-inner);
-      border-radius: 3px;
-      background: var(--bg-sunken);
-      margin-bottom: 4px;
-      overflow: hidden
-    }
-
-    .el-item.active {
-      border-color: var(--ac)
-    }
-
-    .el-item-hdr {
-      display: flex;
-      align-items: center;
-      gap: 6px;
-      padding: 5px 8px;
-      cursor: pointer
-    }
-
-    .el-item-hdr:hover {
-      background: var(--bg-hover)
-    }
-
-    .el-type {
-      font-size: 10px;
-      color: var(--tx-meta);
-      border: 1px solid var(--bd-type);
-      border-radius: 2px;
-      padding: 1px 6px;
-      flex-shrink: 0
-    }
-
-    .el-item.active .el-type {
-      color: var(--ac);
-      border-color: var(--bd-active)
-    }
-
-    .el-name {
-      flex: 1;
-      color: var(--tx-dim);
-      font-size: 11px;
-      overflow: hidden;
-      text-overflow: ellipsis;
-      white-space: nowrap;
-      max-width: 120px
-    }
-
-    .el-fields {
-      padding: 6px 8px 8px;
-      border-top: 1px solid var(--bg-bar);
-      display: flex;
-      flex-direction: column;
-      gap: 5px
-    }
-
-    .fields-grid {
-      display: grid;
-      grid-template-columns: 1fr 1fr;
-      gap: 4px 10px
-    }
-
-    .field {
-      display: flex;
-      flex-direction: column;
-      gap: 2px
-    }
-
-    .field.full {
-      grid-column: 1/-1
-    }
-
-    .field>label {
-      font-size: 10px;
-      color: var(--tx-faint)
-    }
-
-    .field input[type=text],
-    .field input[type=number],
-    .field select,
-    .field textarea {
-      background: var(--bg-input);
-      color: var(--tx-sub);
-      border: 1px solid var(--bd-card);
-      border-radius: 2px;
-      padding: 3px 6px;
-      font-family: monospace;
-      font-size: 11px;
-      width: 100%;
-      outline: none
-    }
-
-    .field input:focus,
-    .field select:focus,
-    .field textarea:focus {
-      border-color: var(--ac);
-      color: var(--tx)
-    }
-
-    .field textarea {
-      resize: vertical;
-      min-height: 44px;
-      line-height: 1.4
-    }
-
-    .field select option {
-      background: var(--bg-bar);
-      color: var(--tx-ghost)
-    }
-
-    .flags-row {
-      display: flex;
-      flex-wrap: wrap;
-      gap: 10px;
-      padding: 2px 0
-    }
-
-    .add-el {
-      background: transparent;
-      color: var(--tx-ghost);
-      border: 1px dashed var(--bd-card);
-      border-radius: 3px;
-      padding: 5px 8px;
-      font-family: monospace;
-      font-size: 11px;
-      cursor: pointer;
-      width: 100%;
-      text-align: center;
-      margin-top: 2px
-    }
-
-    .add-el:hover {
-      color: var(--tx-sub);
-      border-color: var(--bd-hover)
-    }
-
-    /* confirm dialog */
-    #confirm-overlay {
-      display: none;
-      position: fixed;
-      inset: 0;
-      background: var(--bg-overlay);
-      z-index: 100;
-      align-items: center;
-      justify-content: center
-    }
-
-    #confirm-overlay.show {
-      display: flex
-    }
-
-    #confirm-box {
-      background: var(--bg-bar);
-      border: 1px solid var(--bd-strong);
-      border-radius: 4px;
-      padding: 20px 24px;
-      max-width: 340px;
-      width: 90%;
-      display: flex;
-      flex-direction: column;
-      gap: 14px
-    }
-
-    #confirm-msg {
-      color: var(--tx-ghost);
-      font-size: 12px;
-      line-height: 1.6
-    }
-
-    #confirm-btns {
-      display: flex;
-      gap: 8px;
-      justify-content: flex-end
-    }
-
-    .cb {
-      background: var(--bg-raised);
-      color: var(--tx-sub);
-      border: 1px solid var(--bd-btn);
-      border-radius: 3px;
-      padding: 4px 14px;
-      font-family: monospace;
-      font-size: 11px;
-      cursor: pointer
-    }
-
-    .cb:hover {
-      background: var(--bg-hover2);
-      color: var(--tx-hover)
-    }
-
-    .cb.primary {
-      border-color: var(--bd-active);
-      color: var(--ac)
-    }
-
-    .cb.primary:hover {
-      background: var(--bg-active)
-    }
-  </style>
+  <link href="style.css" rel="stylesheet"/>
 </head>
 
 <body>
diff --git a/ts/style.css b/ts/style.css
new file mode 100644
index 0000000..65e6be8
--- /dev/null
+++ b/ts/style.css
@@ -0,0 +1,624 @@
+:root {
+  --bg: #111;
+  --bg-bar: #1a1a1a;
+  --bg-raised: #161616;
+  --bg-hover: #1b1b1b;
+  --bg-hover2: #222;
+  --bg-sunken: #141414;
+  --bg-accent: #141e14;
+  --bg-active: #182018;
+  --bg-deep: #0f0f0f;
+  --bg-input: #0a0a0a;
+  --bg-canvas: #000;
+  --bg-xhover: #1e1010;
+  --bg-overlay: rgba(0,0,0,.6);
+  --bd: #2a2a2a;
+  --bd-inner: #1e1e1e;
+  --bd-deep: #1c1c1c;
+  --bd-card: #222;
+  --bd-btn: #2d2d2d;
+  --bd-type: #252525;
+  --bd-active: #2b3d2b;
+  --bd-hover: #444;
+  --bd-strong: #333;
+  --tx: #ccc;
+  --tx-hover: #bbb;
+  --tx-sub: #888;
+  --tx-label: #777;
+  --tx-meta: #666;
+  --tx-dim: #555;
+  --tx-faint: #444;
+  --tx-ghost: #333;
+  --tx-file: #3a3a3a;
+  --tx-empty: #2e2e2e;
+  --ac: #33ff66;
+  --dirty: #886622
+}
+
+@media (prefers-color-scheme: light) {
+  :root:not([data-theme="dark"]) {
+    --bg: #f5f5f5;
+    --bg-bar: #e8e8e8;
+    --bg-raised: #efefef;
+    --bg-hover: #e5e5e5;
+    --bg-hover2: #e0e0e0;
+    --bg-sunken: #ebebeb;
+    --bg-accent: #e8f5e8;
+    --bg-active: #dff0df;
+    --bg-deep: #f0f0f0;
+    --bg-input: #fff;
+    --bg-canvas: #fff;
+    --bg-xhover: #ffe8e8;
+    --bg-overlay: rgba(0,0,0,.4);
+    --bd: #d0d0d0;
+    --bd-inner: #ddd;
+    --bd-deep: #e0e0e0;
+    --bd-card: #ddd;
+    --bd-btn: #ccc;
+    --bd-type: #d8d8d8;
+    --bd-active: #7dc87d;
+    --bd-hover: #bbb;
+    --bd-strong: #ccc;
+    --tx: #222;
+    --tx-hover: #333;
+    --tx-sub: #555;
+    --tx-label: #666;
+    --tx-meta: #777;
+    --tx-dim: #888;
+    --tx-faint: #999;
+    --tx-ghost: #aaa;
+    --tx-file: #aaa;
+    --tx-empty: #bbb;
+    --ac: #1a9940;
+    --dirty: #b37a00
+  }
+}
+
+[data-theme="light"] {
+  --bg: #f5f5f5;
+  --bg-bar: #e8e8e8;
+  --bg-raised: #efefef;
+  --bg-hover: #e5e5e5;
+  --bg-hover2: #e0e0e0;
+  --bg-sunken: #ebebeb;
+  --bg-accent: #e8f5e8;
+  --bg-active: #dff0df;
+  --bg-deep: #f0f0f0;
+  --bg-input: #fff;
+  --bg-canvas: #fff;
+  --bg-xhover: #ffe8e8;
+  --bg-overlay: rgba(0,0,0,.4);
+  --bd: #d0d0d0;
+  --bd-inner: #ddd;
+  --bd-deep: #e0e0e0;
+  --bd-card: #ddd;
+  --bd-btn: #ccc;
+  --bd-type: #d8d8d8;
+  --bd-active: #7dc87d;
+  --bd-hover: #bbb;
+  --bd-strong: #ccc;
+  --tx: #222;
+  --tx-hover: #333;
+  --tx-sub: #555;
+  --tx-label: #666;
+  --tx-meta: #777;
+  --tx-dim: #888;
+  --tx-faint: #999;
+  --tx-ghost: #aaa;
+  --tx-file: #aaa;
+  --tx-empty: #bbb;
+  --ac: #1a9940;
+  --dirty: #b37a00
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0
+}
+
+body {
+  background: var(--bg);
+  color: var(--tx);
+  font-family: monospace;
+  height: 100vh;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  font-size: 12px
+}
+
+#topbar {
+  height: 36px;
+  background: var(--bg-bar);
+  border-bottom: 1px solid var(--bd);
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 12px;
+  flex-shrink: 0
+}
+
+#topbar .app-name {
+  color: var(--tx-dim);
+  font-size: 11px;
+  letter-spacing: .12em;
+  text-transform: uppercase;
+  margin-right: 4px
+}
+
+.tb-btn {
+  background: var(--bg-raised);
+  color: var(--tx-sub);
+  border: 1px solid var(--bd-btn);
+  border-radius: 3px;
+  padding: 3px 10px;
+  font-family: monospace;
+  font-size: 11px;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  white-space: nowrap
+}
+
+.tb-btn:hover {
+  background: var(--bg-hover2);
+  color: var(--tx-hover);
+  border-color: var(--bd-hover)
+}
+
+.tb-btn svg {
+  width: 13px;
+  height: 13px;
+  stroke: currentColor;
+  fill: none;
+  stroke-width: 1.8;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+  flex-shrink: 0
+}
+
+#file-input {
+  display: none
+}
+
+#filename {
+  color: var(--tx-file);
+  font-size: 11px;
+  margin-left: 2px;
+  max-width: 200px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap
+}
+
+.tb-sep {
+  width: 1px;
+  height: 18px;
+  background: var(--bd)
+}
+
+.dirty {
+  color: var(--dirty) !important
+}
+
+#main {
+  flex: 1;
+  display: flex;
+  min-height: 0
+}
+
+#left {
+  width: 48%;
+  border-right: 1px solid var(--bd-inner);
+  display: flex;
+  flex-direction: column;
+  padding: 14px;
+  gap: 10px;
+  overflow-y: auto;
+  flex-shrink: 0
+}
+
+#display-box {
+  width: 100%;
+  aspect-ratio: 2/1;
+  background: var(--bg-canvas);
+  border: 1px solid var(--bd);
+  border-radius: 3px;
+  overflow: hidden
+}
+
+#canvas_root {
+  width: 100%;
+  height: 100%;
+  display: block;
+  image-rendering: pixelated;
+  image-rendering: crisp-edges
+}
+
+.pv-label {
+  font-size: 10px;
+  color: var(--tx-ghost);
+  letter-spacing: .1em;
+  text-transform: uppercase
+}
+
+#demo-btns {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 5px;
+  margin-top: 6px
+}
+
+#sec-meta {
+  background: var(--bg-sunken);
+  border: 1px solid var(--bd-inner);
+  border-radius: 3px;
+  padding: 8px 10px;
+  display: flex;
+  flex-direction: column;
+  gap: 6px
+}
+
+.meta-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 11px
+}
+
+.meta-row label {
+  color: var(--tx-faint);
+  min-width: 90px
+}
+
+.meta-val {
+  color: var(--tx-meta)
+}
+
+.green {
+  color: var(--ac)
+}
+
+.flag-check {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  font-size: 11px;
+  color: var(--tx-dim);
+  cursor: pointer
+}
+
+.flag-check input {
+  accent-color: var(--ac);
+  cursor: pointer
+}
+
+#right {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  overflow: hidden
+}
+
+#right-hdr {
+  height: 36px;
+  background: var(--bg-sunken);
+  border-bottom: 1px solid var(--bd-inner);
+  display: flex;
+  align-items: center;
+  padding: 0 10px;
+  gap: 6px;
+  flex-shrink: 0
+}
+
+#right-hdr .rh-title {
+  flex: 1;
+  color: var(--tx-faint);
+  font-size: 11px;
+  letter-spacing: .08em;
+  text-transform: uppercase
+}
+
+#sections-wrap {
+  flex: 1;
+  overflow-y: auto;
+  padding: 8px
+}
+
+.empty-state {
+  color: var(--tx-empty);
+  font-size: 11px;
+  padding: 28px 16px;
+  text-align: center;
+  line-height: 2
+}
+
+/* section card */
+.sec-card {
+  border: 1px solid var(--bd-card);
+  border-radius: 3px;
+  margin-bottom: 5px;
+  overflow: hidden
+}
+
+.sec-card.active {
+  border-color: var(--bd-active)
+}
+
+.sec-hdr {
+  display: flex;
+  align-items: center;
+  gap: 7px;
+  padding: 6px 8px;
+  cursor: pointer;
+  user-select: none;
+  background: var(--bg-raised);
+  position: relative
+}
+
+.sec-hdr:hover {
+  background: var(--bg-hover)
+}
+
+.sec-card.active .sec-hdr {
+  background: var(--bg-active)
+}
+
+.sec-arrow {
+  color: var(--tx-ghost);
+  font-size: 13px;
+  line-height: 1;
+  transition: transform .12s;
+  flex-shrink: 0
+}
+
+.sec-card.open .sec-arrow {
+  transform: rotate(90deg)
+}
+
+.sec-label {
+  flex: 1;
+  color: var(--tx-label);
+  font-size: 11px
+}
+
+.sec-badge {
+  font-size: 10px;
+  color: var(--ac);
+  border: 1px solid var(--bd-active);
+  background: var(--bg-accent);
+  border-radius: 2px;
+  padding: 1px 6px;
+  flex-shrink: 0
+}
+
+/* red ×  - section & element */
+.x-btn {
+  background: none;
+  border: none;
+  color: var(--bd);
+  cursor: pointer;
+  font-size: 15px;
+  line-height: 1;
+  padding: 2px 5px;
+  border-radius: 2px;
+  flex-shrink: 0;
+  transition: color .1s, background .1s
+}
+
+.x-btn:hover {
+  color: #ff4444;
+  background: var(--bg-xhover)
+}
+
+/* element */
+.el-list {
+  background: var(--bg-deep);
+  border-top: 1px solid var(--bd-deep);
+  padding: 6px
+}
+
+.el-item {
+  border: 1px solid var(--bd-inner);
+  border-radius: 3px;
+  background: var(--bg-sunken);
+  margin-bottom: 4px;
+  overflow: hidden
+}
+
+.el-item.active {
+  border-color: var(--ac)
+}
+
+.el-item-hdr {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 5px 8px;
+  cursor: pointer
+}
+
+.el-item-hdr:hover {
+  background: var(--bg-hover)
+}
+
+.el-type {
+  font-size: 10px;
+  color: var(--tx-meta);
+  border: 1px solid var(--bd-type);
+  border-radius: 2px;
+  padding: 1px 6px;
+  flex-shrink: 0
+}
+
+.el-item.active .el-type {
+  color: var(--ac);
+  border-color: var(--bd-active)
+}
+
+.el-name {
+  flex: 1;
+  color: var(--tx-dim);
+  font-size: 11px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 120px
+}
+
+.el-fields {
+  padding: 6px 8px 8px;
+  border-top: 1px solid var(--bg-bar);
+  display: flex;
+  flex-direction: column;
+  gap: 5px
+}
+
+.fields-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 4px 10px
+}
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 2px
+}
+
+.field.full {
+  grid-column: 1/-1
+}
+
+.field>label {
+  font-size: 10px;
+  color: var(--tx-faint)
+}
+
+.field input[type=text],
+.field input[type=number],
+.field select,
+.field textarea {
+  background: var(--bg-input);
+  color: var(--tx-sub);
+  border: 1px solid var(--bd-card);
+  border-radius: 2px;
+  padding: 3px 6px;
+  font-family: monospace;
+  font-size: 11px;
+  width: 100%;
+  outline: none
+}
+
+.field input:focus,
+.field select:focus,
+.field textarea:focus {
+  border-color: var(--ac);
+  color: var(--tx)
+}
+
+.field textarea {
+  resize: vertical;
+  min-height: 44px;
+  line-height: 1.4
+}
+
+.field select option {
+  background: var(--bg-bar);
+  color: var(--tx-ghost)
+}
+
+.flags-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 10px;
+  padding: 2px 0
+}
+
+.add-el {
+  background: transparent;
+  color: var(--tx-ghost);
+  border: 1px dashed var(--bd-card);
+  border-radius: 3px;
+  padding: 5px 8px;
+  font-family: monospace;
+  font-size: 11px;
+  cursor: pointer;
+  width: 100%;
+  text-align: center;
+  margin-top: 2px
+}
+
+.add-el:hover {
+  color: var(--tx-sub);
+  border-color: var(--bd-hover)
+}
+
+/* confirm dialog */
+#confirm-overlay {
+  display: none;
+  position: fixed;
+  inset: 0;
+  background: var(--bg-overlay);
+  z-index: 100;
+  align-items: center;
+  justify-content: center
+}
+
+#confirm-overlay.show {
+  display: flex
+}
+
+#confirm-box {
+  background: var(--bg-bar);
+  border: 1px solid var(--bd-strong);
+  border-radius: 4px;
+  padding: 20px 24px;
+  max-width: 340px;
+  width: 90%;
+  display: flex;
+  flex-direction: column;
+  gap: 14px
+}
+
+#confirm-msg {
+  color: var(--tx-ghost);
+  font-size: 12px;
+  line-height: 1.6
+}
+
+#confirm-btns {
+  display: flex;
+  gap: 8px;
+  justify-content: flex-end
+}
+
+.cb {
+  background: var(--bg-raised);
+  color: var(--tx-sub);
+  border: 1px solid var(--bd-btn);
+  border-radius: 3px;
+  padding: 4px 14px;
+  font-family: monospace;
+  font-size: 11px;
+  cursor: pointer
+}
+
+.cb:hover {
+  background: var(--bg-hover2);
+  color: var(--tx-hover)
+}
+
+.cb.primary {
+  border-color: var(--bd-active);
+  color: var(--ac)
+}
+
+.cb.primary:hover {
+  background: var(--bg-active)
+}