* { box-sizing: border-box; }

body { margin: 0; }

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

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.eyebrow { margin: 0; }
h1 { margin: 0; line-height: 1.07; }
.top-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; }

main { max-width: 1540px; margin: 0 auto; padding: 0 34px 50px; }

.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.panel-heading > div { display: flex; align-items: center; }
.panel-heading h2 { margin: 0; }
.meta { text-align: right; }

.button, .tool, .export-card {
  cursor: pointer;
  transition: transform .14s ease, border-color .14s ease, background .14s ease, box-shadow .14s ease;
}
.button:disabled, .tool:disabled { opacity: .4; cursor: not-allowed; transform: none; }
.button { min-height: 39px; padding: 8px 14px; font-weight: 700; }
.button.full { width: 100%; margin-top: 14px; }
.file-button { display: inline-flex; align-items: center; justify-content: center; }
.file-button input, .drop-zone input { display: none; }

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  cursor: pointer;
  text-align: center;
}
.drop-zone small { color: var(--muted); }
.drop-icon { font-size: 38px; line-height: 1; }

.crop-wrap { position: relative; overflow: hidden; touch-action: none; }
#sourceCanvas { display: block; width: 100%; height: auto; }
.crop-frame { position: absolute; pointer-events: none; }
.crop-frame::before, .crop-frame::after { content: ""; position: absolute; }
.crop-frame::before { width: 1px; top: 0; bottom: 0; left: 50%; }
.crop-frame::after { height: 1px; left: 0; right: 0; top: 50%; }

.control-grid { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.control { display: flex; flex-direction: column; gap: 7px; font-weight: 700; }
.control.wide { grid-column: 1 / -1; }
.control span { display: flex; justify-content: space-between; }
.control input[type="range"] { width: 100%; }
.control select, .name-field input {
  min-height: 39px;
  padding: 7px 10px;
}

.toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin-bottom: 12px; }
.tool { min-height: 36px; padding: 7px 11px; font-size: 13px; font-weight: 700; }
.tool kbd, .button kbd, .shortcut-hint kbd {
  display: inline-block;
  min-width: 18px;
  padding: 2px 4px;
  border: 1px solid currentColor;
  background: rgba(255, 255, 255, .52);
  font: 800 10px/1 Consolas, monospace;
  text-align: center;
  box-shadow: 1px 1px 0 rgba(17, 19, 22, .18);
}
.toolbar-sep { width: 1px; height: 26px; margin: 0 3px; }
.check { margin-left: 6px; font-size: 12px; white-space: nowrap; }

.block-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px 14px;
  margin: -4px 0 15px;
  padding: 10px;
  border: 2px solid var(--black, #111316);
  border-left: 5px solid var(--cyan, #18d4d1);
  background: rgba(255, 255, 255, .78);
  box-shadow: 4px 4px 0 rgba(255, 43, 145, .24);
}
.block-tool-group { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.block-tool-group + .block-tool-group { padding-left: 12px; border-left: 1px solid #a9acb2; }
.block-tool-label { color: #5b6065; font: 800 10px/1 Consolas, "Microsoft YaHei UI", sans-serif; letter-spacing: .08em; }
.selection-count { min-width: 65px; color: #111316; font: 800 11px/1 Consolas, monospace; }
.shortcut-hint { color: #666b70; font: 700 10px/1.3 "Microsoft YaHei UI", sans-serif; white-space: nowrap; }
.block-check { margin-left: 0; }
.block-actions { margin-left: auto; }
.block-actions .button { min-height: 36px; }
.move-controls { display: inline-flex; gap: 6px; width: 170px; }
.move-controls .button { min-width: 0; min-height: 36px; }
#moveStartBtn { flex: 1; }
#moveActiveControls .button { flex: 1 1 0; padding-inline: 10px; }
#moveConfirmBtn.button.primary::after { content: none; }
#gridCanvas.block-mode { cursor: cell; }
#gridCanvas.block-mode.move-mode { cursor: grab; }
#gridCanvas.block-mode.move-dragging { cursor: grabbing; }

.editor-canvas-wrap { margin: 0 auto; }
#gridCanvas { display: block; width: 100%; height: auto; cursor: crosshair; touch-action: none; image-rendering: pixelated; }
.selected-color-row { margin-top: 12px; display: flex; align-items: center; justify-content: flex-end; font-size: 12px; }
.selected-badge { margin-left: auto; padding: 7px 10px; color: #fff; background: #222; font-weight: 800; }

.palette { display: grid; }
.swatch {
  position: relative;
  padding: 7px;
  cursor: pointer;
  overflow: hidden;
  text-align: left;
}
.swatch strong { display: block; text-shadow: 0 1px 2px rgba(0,0,0,.22); }
.swatch small { display: block; margin-top: 4px; opacity: .78; }
.swatch .count { position: absolute; font-weight: 800; }

.name-field { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; }
.name-field input { width: 150px; }
.export-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.export-card { text-align: left; }
.export-card strong, .export-card span { display: block; }
.export-card span { margin-top: 7px; font-size: 11px; }
.status { margin: 14px 0 0; min-height: 22px; }

.boundary-notice {
  position: fixed;
  z-index: 1000;
  top: 22px;
  left: 50%;
  width: min(420px, calc(100vw - 28px));
  padding: 14px 18px;
  color: #fff;
  background: #111316;
  border: 2px solid #111316;
  border-left: 7px solid #ff2b91;
  box-shadow: 7px 7px 0 #18d4d1;
  transform: translate(-50%, -18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.boundary-notice.visible { transform: translate(-50%, 0); opacity: 1; }
.boundary-notice strong,
.boundary-notice span { display: block; }
.boundary-notice strong { font-size: 15px; }
.boundary-notice span { margin-top: 5px; color: rgba(255, 255, 255, .78); font-size: 12px; }

@media (prefers-reduced-motion: reduce) {
  .boundary-notice { transition: none; }
}

footer { padding: 26px; text-align: center; }

@media (max-width: 680px) {
  .topbar { flex-direction: column; }
  .top-actions { justify-content: flex-start; }
  main { padding: 0 10px 34px; }
  .panel-heading { align-items: flex-start; }
  .export-grid { grid-template-columns: 1fr 1fr; }
  .name-field { flex-direction: column; align-items: flex-start; }
  .block-tool-group + .block-tool-group { padding-left: 0; border-left: 0; }
  .block-actions { width: 100%; margin-left: 0; }
  .toolbar kbd, .block-toolbar kbd, .block-toolbar .shortcut-hint { display: none; }
}

@media (max-width: 420px) {
  .export-grid { grid-template-columns: 1fr; }
}

/* ─────────────────────────────────────────────────────────────
   INTERACTIVE EXHIBITION THEME
   白灰展厅 / 黑色工业线框 / 青・品红・荧光黄
   ───────────────────────────────────────────────────────────── */
:root {
  --ink: #111316;
  --muted: #6f7277;
  --paper: #e9eaed;
  --panel: rgba(252, 252, 253, .94);
  --line: #a9acb2;
  --brand: #18d4d1;
  --brand-dark: #00aaa9;
  --accent: #ff2b91;
  --acid: #e7f20c;
  --cyan: #18d4d1;
  --pink: #ff2b91;
  --black: #111316;
  --shadow: 12px 14px 0 rgba(17, 19, 22, .075), 0 24px 50px rgba(17, 19, 22, .12);
}

html {
  scrollbar-color: var(--cyan) #d7d8dc;
}

body {
  position: relative;
  min-height: 100vh;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 76% 4%, rgba(24, 212, 209, .23) 0 2px, transparent 3px),
    radial-gradient(circle at 13% 18%, rgba(231, 242, 12, .20) 0 3px, transparent 4px),
    radial-gradient(circle at 91% 43%, rgba(255, 43, 145, .13) 0 2px, transparent 3px),
    linear-gradient(115deg, transparent 0 66%, rgba(255, 255, 255, .60) 66% 68%, transparent 68% 100%),
    repeating-linear-gradient(0deg, transparent 0 63px, rgba(17, 19, 22, .025) 64px),
    linear-gradient(135deg, #f4f4f6 0%, #e3e4e8 54%, #f2f2f3 100%);
  background-size: 210px 210px, 290px 290px, 250px 250px, auto, auto, auto;
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .42;
  background-image: radial-gradient(rgba(17, 19, 22, .19) .65px, transparent .8px);
  background-size: 7px 7px;
  mask-image: linear-gradient(to bottom, transparent 0, #000 18%, #000 78%, transparent 100%);
}

body::after {
  content: "";
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  height: 5px;
  pointer-events: none;
  background: linear-gradient(90deg,
    var(--pink) 0 32%, #fff 32% 32.5%,
    var(--cyan) 32.5% 67%, #fff 67% 67.5%,
    var(--acid) 67.5% 100%);
  box-shadow: 0 -2px 14px rgba(24, 212, 209, .35);
}

::selection { color: #fff; background: var(--pink); }

.topbar {
  position: relative;
  max-width: 1472px;
  margin: 18px auto 22px;
  padding: 29px 36px 26px;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(255,255,255,.97), rgba(242,243,245,.88)),
    radial-gradient(rgba(17,19,22,.15) .7px, transparent .9px);
  background-size: auto, 6px 6px;
  border: 2px solid var(--black);
  border-left-width: 9px;
  border-radius: 0;
  box-shadow: 11px 11px 0 rgba(17, 19, 22, .10);
  clip-path: polygon(0 0, calc(100% - 27px) 0, 100% 27px, 100% 100%, 27px 100%, 0 calc(100% - 27px));
}

.topbar::before {
  content: "01  /  CREATION TERMINAL";
  position: absolute;
  top: 0;
  right: 64px;
  padding: 5px 18px 6px;
  color: #fff;
  background: var(--black);
  font: 800 10px/1 Consolas, monospace;
  letter-spacing: .13em;
}

.topbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg,
    var(--pink) 0 33.33%,
    var(--cyan) 33.33% 66.67%,
    var(--acid) 66.67% 100%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 10px;
  color: #4d5155;
  font: 800 11px/1 Consolas, monospace;
  letter-spacing: .19em;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 8px;
  background: linear-gradient(90deg, var(--pink) 0 33%, var(--cyan) 33% 66%, var(--acid) 66%);
  transform: skewX(-28deg);
}

h1 {
  position: relative;
  width: fit-content;
  color: #08090b;
  font-weight: 950;
  font-style: italic;
  letter-spacing: -.065em;
  text-transform: uppercase;
  text-shadow: 3px 3px 0 rgba(24, 212, 209, .24);
}

h1::after {
  content: "";
  position: absolute;
  right: -40px;
  top: 51%;
  width: 28px;
  height: 5px;
  background: var(--pink);
  box-shadow: 8px 8px 0 var(--cyan), 16px 16px 0 var(--acid);
  transform: skewX(-35deg);
}

.top-actions { gap: 12px; }

main { padding-bottom: 68px; }

.panel {
  position: relative;
  overflow: hidden;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.97), rgba(244,245,247,.94)),
    radial-gradient(rgba(17,19,22,.10) .6px, transparent .8px);
  background-size: auto, 7px 7px;
  border: 2px solid var(--black);
  border-radius: 2px;
  box-shadow: var(--shadow);
}

.panel::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 0;
  left: 0;
  width: 150px;
  height: 7px;
  background: var(--cyan);
  box-shadow: 150px 0 0 var(--pink), 300px 0 0 var(--acid);
}

.panel::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: -46px;
  top: -46px;
  width: 105px;
  height: 105px;
  border: 12px solid rgba(17,19,22,.055);
  border-radius: 50%;
  box-shadow: inset 0 0 0 7px rgba(24,212,209,.055);
}

.panel > * { position: relative; z-index: 1; }

.palette-panel { margin-top: 22px; }

.panel-heading {
  min-height: 46px;
  margin: -2px -2px 18px;
  padding: 0 3px 12px;
  border-bottom: 1px solid #c4c6ca;
}

.panel-heading > div { gap: 10px; }

.panel-heading h2 {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -.025em;
}

.step {
  min-width: 40px;
  padding: 7px 8px 6px;
  color: #fff;
  background: var(--black);
  font: 900 15px/1 Consolas, monospace;
  letter-spacing: .08em;
  text-align: center;
  clip-path: polygon(0 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
  box-shadow: inset 4px 0 0 var(--cyan);
}

.source-panel .step { box-shadow: inset 4px 0 0 var(--pink); }
.palette-panel .step { box-shadow: inset 4px 0 0 var(--acid); }
.export-panel .step { box-shadow: inset 4px 0 0 var(--cyan); }

.meta {
  color: #73777c;
  font: 600 11px/1.45 "Microsoft YaHei UI", sans-serif;
  letter-spacing: .025em;
}

.button, .tool, .export-card {
  position: relative;
  border: 1.5px solid var(--black);
  border-radius: 0;
  background: rgba(255,255,255,.93);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.button, .export-card { box-shadow: 3px 3px 0 rgba(17,19,22,.13); }

.button:hover, .tool:hover, .export-card:hover {
  border-color: var(--black);
  transform: translate(-1px, -2px);
  box-shadow: 5px 6px 0 rgba(24, 212, 209, .26);
}

.button:active, .tool:active, .export-card:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 rgba(17,19,22,.2);
}

.button.ghost {
  background: rgba(248,249,250,.86);
  backdrop-filter: blur(10px);
}

.button.primary {
  color: #0b0d0e;
  background: var(--cyan);
  border-color: var(--black);
  box-shadow: 5px 5px 0 var(--pink);
  text-shadow: none;
}

.button.primary::after {
  content: ">>>";
  position: absolute;
  right: 16px;
  font: 900 16px/1 Consolas, monospace;
  letter-spacing: -.2em;
}

.button.primary:hover {
  color: #fff;
  background: var(--black);
  box-shadow: 6px 6px 0 var(--cyan), 9px 9px 0 var(--pink);
}

.button.secondary { background: #f0f1f3; }

.drop-zone {
  position: relative;
  min-height: 230px;
  border: 2px dashed #676b70;
  border-radius: 0;
  background:
    linear-gradient(135deg, rgba(255,255,255,.93), rgba(231,233,236,.86)),
    radial-gradient(rgba(17,19,22,.18) .7px, transparent .9px);
  background-size: auto, 7px 7px;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.drop-zone::before {
  content: "UPLOAD / INPUT 01";
  position: absolute;
  top: 0;
  left: 0;
  padding: 6px 12px;
  color: #fff;
  background: var(--black);
  font: 700 9px/1 Consolas, monospace;
  letter-spacing: .13em;
}

.drop-zone::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: 22px;
  width: 72px;
  height: 5px;
  background: linear-gradient(90deg, var(--pink) 0 33%, var(--cyan) 33% 66%, var(--acid) 66%);
}

.drop-zone:hover, .drop-zone.dragging {
  border-color: var(--black);
  background-color: rgba(24,212,209,.08);
  box-shadow: inset 0 0 0 5px rgba(24,212,209,.12), 7px 7px 0 rgba(255,43,145,.20);
}

.drop-icon {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  color: var(--black);
  background: var(--acid);
  border: 2px solid var(--black);
  border-radius: 50%;
  font: 300 38px/1 Arial, sans-serif;
  box-shadow: 5px 0 0 var(--cyan), -4px 0 0 var(--pink);
}

.crop-wrap {
  border: 2px solid var(--black);
  border-radius: 0;
  background: #cfd1d5;
  box-shadow: 6px 6px 0 var(--cyan), -4px -4px 0 rgba(255,43,145,.65);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.crop-frame {
  inset: 10px;
  border: 1px solid var(--cyan);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.8), 0 0 18px rgba(24,212,209,.30);
}

.crop-frame::before, .crop-frame::after { background: rgba(255,43,145,.62); }

.control { color: #53575b; font-size: 11px; }
.control span { font-weight: 800; }
.control output { color: var(--black); font-family: Consolas, monospace; }

input[type="range"] {
  height: 5px;
  accent-color: var(--cyan);
}

.control select, .name-field input {
  border: 1.5px solid var(--black);
  border-radius: 0;
  background: rgba(255,255,255,.96);
  box-shadow: 3px 3px 0 rgba(17,19,22,.10);
}

.toolbar {
  padding: 9px;
  border-left: 5px solid var(--pink);
  background: #e9eaed;
  box-shadow: inset 0 -1px 0 #b7b9be;
}

.tool { box-shadow: none; }
.tool.active {
  color: #090b0d;
  background: var(--cyan);
  border-color: var(--black);
  box-shadow: 3px 3px 0 var(--pink);
}

.toolbar-sep { background: #9b9ea3; }
.check { color: #55595e; font-weight: 700; }
.check input { accent-color: var(--pink); }

.editor-canvas-wrap {
  position: relative;
  padding: 12px;
  background: #cfd1d4;
  border: 2px solid var(--black);
  border-radius: 0;
  box-shadow: 7px 7px 0 var(--cyan), -5px -5px 0 rgba(255,43,145,.68);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.editor-canvas-wrap::before {
  content: "24 × 24 / GRID SYSTEM";
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  padding: 5px 10px;
  color: #fff;
  background: rgba(17,19,22,.86);
  font: 700 9px/1 Consolas, monospace;
  letter-spacing: .1em;
  pointer-events: none;
}

#gridCanvas { background: #fff; }

.selected-color-row {
  padding-top: 12px;
  border-top: 1px solid #c4c6ca;
  color: #61656a;
}

.selected-badge {
  border: 2px solid var(--black);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--cyan), -2px -2px 0 var(--pink);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
}

.palette {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px;
  max-width: 780px;
  margin: 0 auto;
}

.swatch {
  min-height: 64px;
  border: 2px solid var(--black);
  border-radius: 0;
  box-shadow: 3px 3px 0 rgba(17,19,22,.15);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: transform .13s ease, box-shadow .13s ease;
}

.swatch:hover {
  z-index: 2;
  transform: translateY(-3px);
  box-shadow: 5px 6px 0 var(--cyan);
}

.swatch.selected {
  z-index: 3;
  border-color: var(--black);
  transform: translate(-2px, -3px);
  box-shadow: 5px 0 0 var(--pink), 0 5px 0 var(--cyan), 7px 7px 0 var(--acid);
}

.swatch strong { font-family: Consolas, monospace; letter-spacing: .04em; }
.swatch small { font-family: Consolas, monospace; }

.export-grid { gap: 12px; }

.export-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  min-height: 98px;
  padding: 27px 16px 16px;
  border-left-width: 6px;
}

.export-card:nth-child(1) { border-left-color: var(--cyan); }
.export-card:nth-child(2) { border-left-color: var(--pink); }
.export-card:nth-child(3) { border-left-color: var(--acid); }

.png-export-card {
  padding-top: 26px;
  cursor: pointer;
}

.png-export-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0 3px;
}

.png-export-action,
.png-mode-toggle {
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.png-export-action strong { display: inline; }

.png-mode-toggle {
  font-size: 13px;
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: rgba(17, 19, 22, .45);
  text-underline-offset: 3px;
}

.export-card .png-mode-toggle span {
  display: inline;
  margin: 0;
  color: inherit;
  font-size: inherit;
}

.png-mode-icon { margin-left: 3px !important; }

.png-export-action:focus-visible,
.png-mode-toggle:focus-visible,
.png-export-description a:focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 3px;
}

.png-mode-toggle:hover {
  color: #000;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 2px;
}

.export-card .png-export-description {
  padding-right: 26px;
  line-height: 1.5;
}

.export-card .png-export-description[hidden] { display: none; }

.png-export-description a {
  color: inherit;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.png-export-description a:hover { color: #000; }

.export-card::after {
  content: ">>";
  position: absolute;
  right: 14px;
  bottom: 10px;
  color: #7d8186;
  font: 900 17px/1 Consolas, monospace;
  letter-spacing: -.24em;
}

.export-card strong { font-size: 15px; font-weight: 900; }
.export-card span { color: #74787d; }

.export-card:nth-child(1):hover,
.export-card:nth-child(1):focus-visible {
  color: #080a0c;
  background: rgba(24, 212, 209, .28);
  box-shadow: 6px 6px 0 rgba(24, 212, 209, .26);
}

.export-card:nth-child(2):hover,
.export-card:nth-child(2):focus-visible {
  color: #080a0c;
  background: rgba(255, 43, 145, .22);
  box-shadow: 6px 6px 0 rgba(255, 43, 145, .24);
}

.export-card:nth-child(3):hover,
.export-card:nth-child(3):focus-visible {
  color: #080a0c;
  background: rgba(231, 242, 12, .30);
  box-shadow: 6px 6px 0 rgba(231, 242, 12, .28);
}

.export-card:nth-child(1):hover span,
.export-card:nth-child(1):focus-visible span,
.export-card:nth-child(2):hover span,
.export-card:nth-child(2):focus-visible span {
  color: rgba(0, 0, 0, .62);
}

.export-card:nth-child(3):hover span,
.export-card:nth-child(3):focus-visible span {
  color: rgba(0, 0, 0, .62);
}

.status {
  margin-top: 18px;
  padding: 9px 13px;
  color: #151719;
  background: rgba(24,212,209,.13);
  border-left: 5px solid var(--cyan);
  font: 700 11px/1.5 "Microsoft YaHei UI", sans-serif;
}

.status::before {
  content: "STATUS / ";
  color: var(--pink);
  font-family: Consolas, monospace;
  letter-spacing: .08em;
}

footer {
  position: relative;
  color: #55595e;
  font: 700 10px/1.5 Consolas, "Microsoft YaHei UI", sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
}

footer::before {
  content: "";
  display: inline-block;
  width: 45px;
  height: 6px;
  margin-right: 12px;
  background: linear-gradient(90deg, var(--pink) 0 33%, var(--cyan) 33% 66%, var(--acid) 66%);
  transform: skewX(-30deg);
}

@media (max-width: 1540px) {
  .topbar { margin-left: 34px; margin-right: 34px; }
}

@media (max-width: 1100px) {
  .topbar::before { display: none; }
}

@media (max-width: 680px) {
  .topbar {
    margin: 10px 10px 18px;
    padding: 27px 18px 22px;
    align-items: flex-start;
    border-left-width: 6px;
  }
  h1::after { display: none; }
  .panel { padding: 15px; }
  .top-actions { width: 100%; }
  .top-actions .button { flex: 1; }
  .editor-canvas-wrap { padding: 7px; box-shadow: 4px 4px 0 var(--cyan), -3px -3px 0 rgba(255,43,145,.68); }
}

/* ── 紧凑双层工作台：01横向，02/03并排 ── */
[hidden] { display: none !important; }

.topbar {
  margin-top: 12px;
  margin-bottom: 18px;
  padding-top: 20px;
  padding-bottom: 19px;
}

h1 { font-size: clamp(28px, 3.2vw, 44px); }

.source-stage { width: 100%; }

.source-panel {
  display: grid;
  grid-template-rows: auto minmax(220px, auto);
  gap: 14px 18px;
  align-items: stretch;
}

.source-panel > .panel-heading {
  grid-column: 1 / -1;
  grid-row: 1;
  min-height: 40px;
  margin-bottom: 0;
}

.source-panel > .drop-zone,
.source-panel > .source-previews {
  grid-column: 1;
  grid-row: 2;
}

.source-panel > .drop-zone {
  width: min(100%, 392px);
  min-height: 0;
  justify-self: center;
  aspect-ratio: 1;
}

.source-panel > .source-previews {
  display: grid;
  grid-template-columns: min(100%, 392px);
  gap: 14px;
  align-items: center;
  justify-content: center;
}

.source-panel > .source-previews .crop-wrap {
  width: 100%;
  aspect-ratio: 1;
}

.source-panel > .source-previews #sourceCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.source-panel > .control-grid {
  grid-row: 2;
  align-content: center;
  gap: 12px 14px;
  margin-top: 0;
  padding: 12px 16px;
  border: 1px solid #b9bcc1;
  border-left: 6px solid var(--pink);
  background: rgba(233,234,237,.72);
}

.source-panel > .control-grid .control.wide { grid-column: 1 / -1; }

.workbench-row {
  display: grid;
  gap: 22px;
  align-items: start;
  margin-top: 22px;
}

.workbench-row .palette-panel { margin-top: 0; }

.workbench-row .palette {
  width: 100%;
  max-width: none;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workbench-row .palette-panel .panel-heading {
  align-items: flex-start;
}

.export-panel { margin-top: 22px; }

@media (max-width: 1180px) {
  .source-panel > .control-grid { padding: 10px 12px; gap: 10px; }
}

@media (max-width: 680px) {
  .source-panel {
    flex-direction: column;
  }
  .source-panel > .source-previews { width: 100%; }
  .source-panel > .control-grid { width: 100%; }
  .workbench-row { gap: 16px; margin-top: 16px; }
}

/* ── 第二轮紧凑调整：放大画板、收窄色板、简化原图框 ── */
.source-panel {
  grid-template-columns: minmax(460px, .82fr) minmax(600px, 1.18fr);
}

.source-panel > .control-grid {
  grid-column: 2;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.source-panel > .control-grid .parameter-grid {
  display: grid;
  grid-column: 1 / 3;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 14px;
  align-content: center;
}

.source-panel > .control-grid .hybrid-thresholds {
  display: contents;
}

.source-panel > .control-grid .conversion-actions {
  display: grid;
  grid-column: 3;
  gap: 12px;
  align-self: stretch;
}

.source-panel > .drop-zone {
  border: 2px solid #25282c;
  border-radius: 0;
  background: #f4f5f6;
  box-shadow: none;
  clip-path: none;
}

.source-panel > .drop-zone::before,
.source-panel > .drop-zone::after { display: none; }

.source-panel > .drop-zone:hover,
.source-panel > .drop-zone.dragging {
  border-color: #090a0c;
  background: #f8f9f9;
  box-shadow: inset 0 0 0 3px rgba(24, 212, 209, .24);
}

.source-panel > .drop-zone .drop-icon {
  width: 52px;
  height: 52px;
  color: #111316;
  background: #fff;
  border: 2px solid #111316;
  box-shadow: none;
}

.source-panel > .source-previews .crop-wrap {
  position: relative;
  overflow: hidden;
  border: 2px solid #111316;
  border-radius: 0;
  background: #d8dade;
  box-shadow: none;
  clip-path: none;
}

.source-panel > .source-previews .crop-wrap .crop-frame {
  inset: 0;
  border: 0;
  box-shadow: inset 0 0 0 2px rgba(17, 19, 22, .92);
}

.source-panel > .source-previews .crop-wrap .crop-frame::before,
.source-panel > .source-previews .crop-wrap .crop-frame::after {
  background: rgba(17, 19, 22, .28);
}

.remove-image {
  position: absolute;
  z-index: 6;
  top: 9px;
  right: 9px;
  display: grid;
  width: 32px;
  height: 32px;
  padding: 0;
  place-items: center;
  color: #fff;
  background: rgba(17, 19, 22, .90);
  border: 1px solid #fff;
  border-radius: 0;
  opacity: 0;
  transform: translateY(-5px);
  pointer-events: none;
  cursor: pointer;
  font: 400 25px/1 Arial, sans-serif;
  transition: opacity .14s ease, transform .14s ease, background .14s ease;
}

.crop-wrap:hover .remove-image,
.remove-image:focus-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.remove-image:hover {
  color: #fff;
  background: #d91f65;
}

@media (max-width: 1180px) {
  .source-panel { grid-template-columns: minmax(400px, .9fr) minmax(500px, 1.1fr); }
}

@media (max-width: 1080px) {
  .source-panel { grid-template-columns: 1fr; grid-template-rows: auto auto auto; }
  .source-panel > .drop-zone,
  .source-panel > .source-previews { grid-column: 1; grid-row: 2; }
  .source-panel > .control-grid { grid-column: 1; grid-row: 3; }
}

@media (max-width: 680px) {
  .source-panel { display: flex; }
  .source-panel > .control-grid { grid-template-columns: 1fr 1fr; }
  .source-panel > .control-grid .parameter-grid {
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .source-panel > .control-grid .conversion-actions {
    grid-column: 1 / -1;
  }
  .source-panel > .control-grid > #resetParamsBtn { grid-column: 1 / -1; }
  .workbench-row .palette-panel { padding-left: 12px; padding-right: 12px; }
}

@media (hover: none) {
  .remove-image {
    opacity: .88;
    transform: none;
    pointer-events: auto;
  }
}

/* ── 大画板＋四边坐标＋色值外置 ── */
.workbench-row {
  grid-template-columns: minmax(760px, 1fr) minmax(300px, .30fr);
}

.workbench-row .editor-canvas-wrap {
  width: min(100%, 800px);
  padding: 9px;
}

.editor-board-layout {
  display: grid;
  grid-template-columns: 138px minmax(0, 800px);
  align-items: start;
  justify-content: center;
  gap: 22px;
  width: 100%;
}

.editor-board-layout.overview-hidden {
  grid-template-columns: minmax(0, 800px);
  gap: 0;
}

.overview-card {
  width: 138px;
  margin-top: 0;
  padding: 8px;
  background: #f7f7f7;
  border: 1px solid #111316;
  box-shadow: 5px 6px 0 rgba(17, 19, 22, .10);
}

.overview-card[hidden] { display: none; }

.overview-card strong {
  display: block;
  margin-bottom: 7px;
  color: #303438;
  font: 900 10px/1.2 "Microsoft YaHei UI", sans-serif;
  letter-spacing: .08em;
}

#overviewCanvas {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  border: 1px solid #111316;
  image-rendering: pixelated;
}

.editor-canvas-wrap::before { display: none; }

.grid-coordinate-frame {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 28px;
  grid-template-rows: 28px minmax(0, 1fr) 28px;
  width: 100%;
  background: #f7f7f7;
  border: 1px solid #111316;
}

.grid-coordinate-frame #gridCanvas {
  grid-column: 2;
  grid-row: 2;
  width: 100%;
  height: auto;
  border: 1px solid #111316;
  image-rendering: auto;
}

.coord-corner {
  background: #e5e6e9;
}

.corner-tl { grid-column: 1; grid-row: 1; }
.corner-tr { grid-column: 3; grid-row: 1; }
.corner-bl { grid-column: 1; grid-row: 3; }
.corner-br { grid-column: 3; grid-row: 3; }

.coord-axis {
  color: #17191c;
  background: #f3f4f5;
  font: 700 9px/1 Consolas, monospace;
  user-select: none;
}

.coord-axis span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
}

.coord-top,
.coord-bottom {
  grid-column: 2;
  display: grid;
  grid-template-columns: repeat(24, minmax(0, 1fr));
}

.coord-top { grid-row: 1; border-bottom: 1px solid #111316; }
.coord-bottom { grid-row: 3; border-top: 1px solid #111316; }

.coord-left,
.coord-right {
  grid-row: 2;
  display: grid;
  grid-template-rows: repeat(24, minmax(0, 1fr));
}

.coord-left { grid-column: 1; border-right: 1px solid #111316; }
.coord-right { grid-column: 3; border-left: 1px solid #111316; }

.workbench-row .palette-panel {
  padding-left: 13px;
  padding-right: 13px;
}

.workbench-row .palette-panel .panel-heading {
  display: block;
  min-height: 0;
  padding-bottom: 10px;
}

.workbench-row .palette-panel .panel-heading .meta {
  display: block;
  max-width: none;
  margin-top: 7px;
  text-align: left;
}

.workbench-row .palette {
  gap: 6px;
}

.workbench-row .swatch {
  display: flex;
  min-width: 0;
  min-height: 0;
  padding: 0;
  flex-direction: column;
  overflow: hidden;
  color: #111316;
  background: #f7f7f8;
  border: 1.5px solid #111316;
  clip-path: none;
}

.swatch-color {
  display: block;
  width: 100%;
  min-height: 37px;
  aspect-ratio: 1.45 / 1;
  border-bottom: 1.5px solid #111316;
}

.swatch-info {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "number count"
    "code code";
  gap: 2px 4px;
  width: 100%;
  min-height: 35px;
  padding: 4px 5px 5px;
  color: #15171a;
  background: #f7f7f8;
  text-align: left;
}

.workbench-row .swatch-info strong {
  grid-area: number;
  color: #111316;
  font: 900 13px/1 Consolas, monospace;
  text-shadow: none;
}

.workbench-row .swatch-info small {
  grid-area: code;
  margin: 0;
  color: #53575d;
  font: 700 8px/1.15 Consolas, monospace;
  opacity: 1;
}

.workbench-row .swatch-info .count {
  position: static;
  grid-area: count;
  justify-self: end;
  color: #55595e;
  font: 700 8px/1.1 "Microsoft YaHei UI", sans-serif;
}

.workbench-row .swatch.selected {
  overflow: visible;
  transform: translate(-1px, -2px);
}

@media (max-width: 1180px) {
  .workbench-row { grid-template-columns: minmax(710px, 1fr) minmax(285px, .28fr); }
  .workbench-row .editor-canvas-wrap { width: min(100%, 750px); }
  .editor-board-layout { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .overview-card { width: 118px; margin: 0; justify-self: center; }
  .coord-axis { font-size: 8px; }
}

@media (max-width: 1080px) {
  .workbench-row { grid-template-columns: 1fr; }
  .workbench-row .editor-canvas-wrap { width: min(100%, 800px); }
  .workbench-row .palette { max-width: 620px; }
}

@media (max-width: 680px) {
  .workbench-row .editor-canvas-wrap { width: 100%; padding: 5px; }
  .overview-card { width: 104px; padding: 6px; }
  .overview-card strong { margin-bottom: 5px; font-size: 9px; }
  .grid-coordinate-frame {
    grid-template-columns: 22px minmax(0, 1fr) 22px;
    grid-template-rows: 22px minmax(0, 1fr) 22px;
  }
  .coord-axis { font-size: 7px; }
  .swatch-color { min-height: 31px; }
  .swatch-info { padding: 3px; }
}

/* ── 图纸导出历史 ── */
.export-history-block {
  margin-top: 20px;
  padding-top: 17px;
  border-top: 1px solid #bfc2c5;
}

.export-history-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 12px;
}

.export-history-heading h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 900;
}

.export-history-heading p {
  margin: 5px 0 0;
  color: #6c7075;
  font-size: 11px;
}

.export-history-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: #555a5f;
  font: 700 11px/1 Consolas, "Microsoft YaHei UI", sans-serif;
}

.export-history-actions button {
  min-height: 30px;
  padding: 5px 10px;
  color: #17191c;
  background: #fff;
  border: 1px solid #17191c;
  cursor: pointer;
  font: 800 11px/1 "Microsoft YaHei UI", sans-serif;
}

.export-history-actions button:hover:not(:disabled) {
  color: #fff;
  background: #17191c;
}

.export-history-actions button:disabled {
  opacity: .38;
  cursor: default;
}

.export-history {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.history-card {
  position: relative;
  min-width: 0;
  background: rgba(255,255,255,.88);
  border: 1.5px solid #17191c;
  box-shadow: 3px 3px 0 rgba(17,19,22,.13);
}

.history-load {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  width: 100%;
  min-height: 94px;
  padding: 9px 35px 9px 9px;
  color: #17191c;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
}

.history-load:hover,
.history-load:focus-visible {
  outline: 0;
  background: linear-gradient(110deg, rgba(24,212,209,.14), rgba(255,255,255,.22));
}

.history-thumb {
  display: block;
  width: 74px;
  height: 74px;
  background: #fff;
  border: 1px solid #17191c;
  image-rendering: pixelated;
}

.history-copy {
  min-width: 0;
}

.history-copy strong,
.history-copy span,
.history-copy small {
  display: block;
}

.history-copy strong {
  overflow: hidden;
  font-size: 13px;
  font-weight: 900;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-copy span {
  margin-top: 7px;
  color: #555a5f;
  font: 700 10px/1.25 Consolas, "Microsoft YaHei UI", sans-serif;
}

.history-copy small {
  margin-top: 6px;
  color: #777c81;
  font-size: 10px;
}

.history-delete {
  position: absolute;
  z-index: 2;
  top: 7px;
  right: 7px;
  width: 24px;
  height: 24px;
  padding: 0;
  color: #656a6e;
  background: #f2f3f4;
  border: 1px solid #a8acb0;
  cursor: pointer;
  font: 700 16px/1 Arial, sans-serif;
}

.history-delete:hover {
  color: #fff;
  background: #d91f65;
  border-color: #17191c;
}

.history-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 22px;
  color: #757a7f;
  background: rgba(255,255,255,.52);
  border: 1px dashed #9da2a6;
  text-align: center;
  font-size: 12px;
}

@media (max-width: 680px) {
  .export-history-heading { align-items: flex-start; flex-direction: column; }
  .export-history { grid-template-columns: 1fr; }
}

/* ── 品牌区 ── */
.brand-block {
  min-width: 0;
}

.title-row {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px 18px;
}

@media (max-width: 480px) {
  .top-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .top-actions .button { width: 100%; }

  .source-panel > .control-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .source-panel > .control-grid .conversion-actions,
  .source-panel > .control-grid .control.wide {
    grid-column: 1;
  }
}