:root {
  --bg: #f5efe3;
  --bg-alt: #fefaf2;
  --panel: rgba(255, 251, 244, 0.84);
  --border: rgba(98, 74, 41, 0.14);
  --ink: #1d1b18;
  --muted: #655f55;
  --accent: #cc5a2c;
  --accent-strong: #9d3c15;
  --teal: #17726b;
  --shadow: 0 22px 60px rgba(78, 51, 20, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "SF Pro Display", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(204, 90, 44, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(23, 114, 107, 0.16), transparent 25%),
    linear-gradient(180deg, #fff7eb 0%, var(--bg) 46%, #efe8dc 100%);
  min-height: 100vh;
}

.page-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.top-nav {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(29, 27, 24, 0.08);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}

.nav-link.active {
  background: rgba(204, 90, 44, 0.14);
  color: var(--accent-strong);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.75fr);
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.hero-copy,
.hero-stats,
.panel {
  background: var(--panel);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 32px;
}

.eyebrow {
  margin: 0 0 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 2.3vw, 3.4rem);
  line-height: 1.06;
  max-width: 10.6em;
}

.hero-text,
.panel-header p,
.stat-label,
small,
#status-text {
  color: var(--muted);
}

.hero-text {
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.7;
  max-width: 48rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.hero-stats {
  padding: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.64);
  border: 1px solid rgba(29, 27, 24, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 124px;
}

.stat-card strong {
  font-size: 2rem;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(360px, 0.96fr) minmax(0, 1.14fr);
  gap: 24px;
}

.panel {
  padding: 26px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.25rem;
}

.panel-header p {
  margin: 10px 0 0;
  line-height: 1.6;
}

form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
}

label span {
  display: block;
}

textarea,
input[type="text"],
input[type="file"],
input[type="number"],
select,
input:not([type]),
input[type="date"] {
  width: 100%;
  border: 1px solid rgba(29, 27, 24, 0.12);
  background: rgba(255, 255, 255, 0.82);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font: inherit;
  color: var(--ink);
  transition: border-color 0.16s ease, transform 0.16s ease;
}

textarea:focus,
input:focus,
select:focus {
  outline: none;
  border-color: rgba(204, 90, 44, 0.5);
  transform: translateY(-1px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.grid-small {
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.8fr);
  align-items: end;
}

.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid rgba(29, 27, 24, 0.12);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
}

.checkbox input {
  width: auto;
  margin: 0;
}

.button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(29, 27, 24, 0.08);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  box-shadow: none;
  transform: none;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #d67b43);
  color: white;
}

.button.ghost,
.button.mini {
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  border: 1px solid rgba(29, 27, 24, 0.1);
}

.button.mini {
  padding: 8px 12px;
  font-size: 0.9rem;
}

.form-actions,
.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.result-section + .result-section {
  margin-top: 26px;
}

.result-section h3 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.bullet-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.72;
}

.bullet-list li + li {
  margin-top: 8px;
}

.empty-list,
.empty-block {
  color: var(--muted);
}

.chip-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.chip {
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(23, 114, 107, 0.12);
  color: #0d5e57;
  font-size: 0.92rem;
}

.search-results,
.card-grid {
  display: grid;
  gap: 14px;
}

.search-result,
.source-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(29, 27, 24, 0.08);
  background: rgba(255, 255, 255, 0.72);
  padding: 16px;
}

.search-result h4,
.source-card h4 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.search-result p,
.source-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.meta-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(204, 90, 44, 0.12);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
}

.pill.secondary {
  background: rgba(23, 114, 107, 0.12);
  color: #0e5f58;
}

.link {
  color: var(--accent-strong);
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
}

#ai-pack {
  min-height: 420px;
  font-family: "SF Mono", "Menlo", "Monaco", monospace;
  line-height: 1.55;
  background: rgba(28, 25, 19, 0.9);
  color: #f3ecd9;
}

.loading::after {
  content: "处理中…";
  margin-left: 10px;
  color: var(--accent-strong);
}

.hidden {
  display: none !important;
}

@media (max-width: 1120px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .page-shell {
    padding: 18px 14px 34px;
  }

  .hero-copy,
  .panel,
  .hero-stats {
    padding: 20px;
  }

  .grid,
  .grid-small,
  .split,
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .form-actions,
  .section-title-row,
  .hero-actions,
  .image-inline-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

.tool-grid {
  display: grid;
  gap: 18px;
}

.tool-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tool-card > summary {
  list-style: none;
  padding: 22px 24px;
  font-size: 1.08rem;
  font-weight: 800;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.52);
}

.tool-card > summary::-webkit-details-marker {
  display: none;
}

.tool-body {
  padding: 22px 24px 26px;
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) minmax(0, 1.15fr);
  gap: 18px;
}

.tool-output {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(29, 27, 24, 0.08);
  background: rgba(255, 255, 255, 0.72);
  padding: 18px;
  min-height: 160px;
}

.tool-output h4 {
  margin: 0 0 10px;
}

.tool-output textarea {
  margin-top: 12px;
  min-height: 220px;
}

@media (max-width: 980px) {
  .tool-body {
    grid-template-columns: 1fr;
  }
}

.image-lab-workspace {
  grid-template-columns: minmax(360px, 0.92fr) minmax(0, 1.08fr);
}

.image-lab-stats .stat-card strong {
  font-size: 1.6rem;
}

.image-advanced-grid {
  margin-top: -2px;
}

.image-result-grid {
  display: grid;
  gap: 14px;
}

.image-result-card {
  overflow: hidden;
}

.image-preview {
  width: 100%;
  margin-top: 14px;
  border-radius: var(--radius-md);
  display: block;
  background: rgba(29, 27, 24, 0.06);
}

.image-inline-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.image-preview-shell {
  position: relative;
  min-height: 220px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(29, 27, 24, 0.08);
  background: rgba(255, 255, 255, 0.72);
  overflow: hidden;
}

.image-preview-shell.empty-block {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.image-preview-base {
  width: 100%;
  display: block;
}

.image-canvas-layer,
.ocr-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.image-canvas-layer {
  touch-action: none;
  background: transparent;
}

.brush-active .image-canvas-layer {
  cursor: crosshair;
}

.ocr-overlay {
  pointer-events: auto;
}

.ocr-overlay.overlay-disabled {
  pointer-events: none;
}

.ocr-box {
  position: absolute;
  border: 2px solid rgba(204, 90, 44, 0.9);
  background: rgba(204, 90, 44, 0.12);
  cursor: pointer;
}

.ocr-box.selected {
  border-color: rgba(23, 114, 107, 0.95);
  background: rgba(23, 114, 107, 0.16);
}

.ocr-item-card {
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.ocr-item-card.selected {
  border-color: rgba(23, 114, 107, 0.44);
  box-shadow: 0 10px 24px rgba(23, 114, 107, 0.16);
}

.brush-control {
  margin-top: 12px;
}

.brush-control input[type="range"] {
  width: 100%;
}

.image-ocr-split {
  align-items: start;
}