:root {
  --canvas: oklch(98.6% 0.006 258);
  --paper: oklch(100% 0.004 258);
  --surface-soft: oklch(96.8% 0.01 254);
  --ink: oklch(22% 0.025 258);
  --ink-soft: oklch(43% 0.022 258);
  --muted: oklch(56% 0.02 258);
  --rule: oklch(90.5% 0.012 255);
  --rule-strong: oklch(83% 0.018 255);
  --blue: oklch(55% 0.22 258);
  --blue-deep: oklch(45% 0.21 258);
  --blue-soft: oklch(95.5% 0.028 258);
  --amber: oklch(66% 0.14 70);
  --amber-soft: oklch(95.5% 0.032 76);
  --green: oklch(49% 0.1 155);
  --danger: oklch(54% 0.18 28);

  /* Keep display and body copy on the same familiar system sans stack.
     This follows the OneSwitch site reference and avoids the uneven serif
     fallback that made Chinese headings feel overly stylized. */
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 0.96875rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.25rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-1: 0 1px 2px color-mix(in oklch, var(--ink) 5%, transparent);
  --shadow-2: 0 14px 34px color-mix(in oklch, var(--ink) 8%, transparent);
  --shadow-3: 0 26px 64px color-mix(in oklch, var(--ink) 11%, transparent);

  --page-gutter: clamp(20px, 4vw, 64px);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--canvas); scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-kerning: normal;
  font-variant-ligatures: common-ligatures;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button, input, select { font: inherit; letter-spacing: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}
[hidden] { display: none !important; }
::selection { color: var(--ink); background: color-mix(in oklch, var(--blue) 24%, transparent); }
h1, h2, h3 { text-wrap: balance; }
p, li { text-wrap: pretty; }

.skip-link {
  position: fixed;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 30;
  padding: var(--space-2) var(--space-4);
  color: var(--paper);
  background: var(--ink);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 180ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  min-height: 68px;
  padding: 0 var(--page-gutter);
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklch, var(--paper) 86%, transparent);
  backdrop-filter: blur(14px) saturate(1.35);
  align-items: center;
  gap: clamp(24px, 4.5vw, 68px);
}
.brand {
  display: inline-flex;
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -.025em;
  text-decoration: none;
  align-items: center;
  gap: var(--space-3);
}
.brand img { display: block; width: 32px; height: 32px; object-fit: cover; border-radius: 7px; }
.site-nav { display: flex; margin-right: auto; gap: clamp(4px, 1.4vw, 16px); align-self: stretch; align-items: stretch; }
.site-nav a {
  position: relative;
  display: flex;
  padding: 0 10px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .01em;
  text-decoration: none;
  align-items: center;
  transition: color 160ms var(--ease-out);
}
.site-nav a::after {
  position: absolute;
  right: 10px;
  bottom: 0;
  left: 10px;
  height: 3px;
  content: "";
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms var(--ease-out);
}
.site-nav a:hover, .site-nav a.is-active { color: var(--ink); }
.site-nav a.is-active::after { transform: scaleX(1); }
.top-actions { display: flex; flex: 0 0 auto; gap: var(--space-4); align-items: center; }
.local-status {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .03em;
  white-space: nowrap;
}
.credit-pill {
  display: grid;
  min-width: 142px;
  padding: 7px 11px 6px;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  border-radius: 10px;
  background: var(--paper);
  text-decoration: none;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  column-gap: 5px;
  box-shadow: var(--shadow-1);
}
.credit-pill b { color: var(--blue); font-size: 15px; font-variant-numeric: tabular-nums; line-height: 1; }
.credit-pill span { color: var(--ink-soft); font-size: 10px; font-weight: 750; letter-spacing: .03em; }
.credit-pill i { grid-column: 1 / -1; margin-top: 3px; color: var(--muted); font-size: 9px; font-style: normal; line-height: 1; }
.credit-pill:hover { border-color: var(--blue); }
.language-select {
  max-width: 182px;
  padding: var(--space-2) 28px var(--space-2) 10px;
  cursor: pointer;
  color: var(--ink-soft);
  border: 0;
  background: transparent;
  font-size: 12px;
  font-weight: 650;
}
.language-select:hover { color: var(--blue-deep); }
main { min-height: calc(100vh - 68px); }
.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}

/* Paper Atlas home */
.upload-view {
  display: grid;
  width: min(1360px, calc(100% - var(--page-gutter) * 2));
  min-height: calc(100vh - 68px);
  margin: 0 auto;
  padding: clamp(52px, 5.5vw, 84px) 0 clamp(64px, 7vw, 104px);
  grid-template-columns: minmax(0, .86fr) minmax(520px, 1fr);
  align-content: start;
  gap: clamp(48px, 6vw, 96px);
}
.paper-atlas-copy { min-width: 0; align-self: center; animation: fade-rise 560ms var(--ease-out) both; }
.privacy-stamp {
  display: inline-flex;
  margin: 0 0 var(--space-6);
  padding: var(--space-2) 10px;
  color: color-mix(in oklch, var(--amber) 76%, var(--ink));
  border: 1px solid color-mix(in oklch, var(--amber) 56%, white);
  border-radius: 999px;
  background: var(--amber-soft);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .04em;
  line-height: 1;
}
.section-heading h1 {
  max-width: 620px;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 4vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1.08;
}
.section-heading > p:not(.privacy-stamp) {
  max-width: 52ch;
  margin: var(--space-5) 0 0;
  color: var(--ink-soft);
  font-size: clamp(.95rem, 1.1vw, 1.08rem);
  line-height: 1.72;
}
.paper-preview {
  width: min(500px, 94%);
  margin: clamp(32px, 3.5vw, 48px) 0 0 2px;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper);
  box-shadow: var(--shadow-3);
}
.paper-preview img { display: block; width: 100%; height: auto; }
.paper-atlas-workbench {
  min-width: 0;
  margin-top: clamp(28px, 3vw, 48px);
  overflow: hidden;
  border: 1.5px dashed var(--rule-strong);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: none;
  container-type: inline-size;
  animation: fade-rise 560ms var(--ease-out) 90ms both;
}
.drop-zone {
  display: flex;
  width: 100%;
  min-height: 520px;
  padding: clamp(40px, 5vw, 72px) clamp(24px, 3vw, 48px);
  cursor: pointer;
  color: var(--ink);
  border: 0;
  border-radius: 0;
  background: var(--paper);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  transition: background 180ms var(--ease-out), transform 180ms var(--ease-out);
}
.drop-zone:hover, .drop-zone.is-dragging { background: var(--blue-soft); transform: translateY(-2px); }
.file-type-mark {
  display: block;
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-4);
  border-radius: 12px;
  object-fit: cover;
  box-shadow: var(--shadow-1);
}
.drop-zone strong {
  max-width: 100%;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.25;
  text-align: center;
}
.drop-zone > span:not(.file-type-label):not(.upload-action-label) {
  color: var(--muted);
  font-size: 15px;
  letter-spacing: .01em;
  text-align: center;
}
.upload-action-label {
  display: flex;
  width: min(360px, 100%);
  min-height: 60px;
  margin-top: var(--space-5);
  padding: 0 var(--space-5);
  color: var(--paper);
  border-radius: 10px;
  background: var(--blue);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .02em;
  align-items: center;
  justify-content: center;
  transition: background 160ms var(--ease-out), transform 160ms var(--ease-out);
}
.drop-zone:hover .upload-action-label, .drop-zone.is-dragging .upload-action-label {
  background: var(--blue-deep);
  transform: translateY(-1px);
}
.drop-zone small {
  max-width: 430px;
  margin-top: var(--space-3);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  text-align: center;
}
.supported-watermarks {
  margin-top: 0;
  padding: var(--space-6) clamp(24px, 3vw, 40px) 28px;
  border: 0;
  border-top: 1px solid var(--rule);
  border-radius: 0;
  background: var(--paper);
}
.supported-head {
  display: flex;
  margin-bottom: var(--space-4);
  gap: var(--space-4);
  align-items: baseline;
  justify-content: space-between;
}
.supported-head h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -.01em;
}
.supported-head span {
  color: var(--blue-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
}
.supported-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.supported-list span {
  min-width: 0;
  padding: var(--space-4) var(--space-2);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  text-align: center;
}
.supported-list span + span { border-left: 1px solid var(--rule); }
.upload-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
@container (max-width: 550px) {
  .drop-zone { min-height: 380px; }
  .supported-list { grid-template-columns: repeat(2, 1fr); }
  .supported-list span:nth-child(3) { border-left: 0; border-top: 1px solid var(--rule); }
  .supported-list span:nth-child(4) { border-top: 1px solid var(--rule); }
}

/* Processing, analysis and result states */
.processing-view, .result-view {
  display: flex;
  min-height: calc(100vh - 68px);
  padding: var(--space-8) var(--space-5);
  text-align: center;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.processing-view h2, .result-view h2 {
  max-width: 820px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.45rem, 4.6vw, 4.6rem);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: 1.05;
}
.processing-file {
  margin: var(--space-5) 0 var(--space-6);
  color: var(--muted);
  font-size: 14px;
  overflow-wrap: anywhere;
}
.progress-track { width: min(390px, 82vw); height: 4px; background: var(--rule); overflow: hidden; }
.progress-track span { display: block; width: 35%; height: 100%; background: var(--blue); animation: progress 1.2s var(--ease-out) infinite; }
@keyframes progress { from { transform: translateX(-125%); } to { transform: translateX(410%); } }
@keyframes fade-rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

.workspace-view {
  width: min(1320px, calc(100% - var(--page-gutter) * 2));
  margin: 0 auto;
  padding: 52px 0 96px;
}
.workspace-header {
  display: flex;
  min-height: 92px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--ink);
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}
.workspace-header h2 {
  margin: var(--space-3) 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 3.8vw, 4rem);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: 1.02;
}
.text-button {
  padding: 0;
  cursor: pointer;
  color: var(--blue-deep);
  border: 0;
  background: transparent;
  font-size: 14px;
  font-weight: 750;
  text-align: left;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.file-facts {
  display: flex;
  color: var(--muted);
  font-size: 13px;
  align-items: center;
}
.file-facts b {
  max-width: 340px;
  color: var(--ink);
  overflow: hidden;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-facts span::before { margin: 0 10px; content: "·"; }
.workspace-grid { display: grid; min-height: 640px; grid-template-columns: minmax(0, 1fr) 420px; }
.preview-pane { min-width: 0; padding: 30px 40px 0 0; border-right: 1px solid var(--rule); }
.preview-toolbar {
  display: flex;
  min-height: 36px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 12px;
  align-items: center;
  justify-content: space-between;
}
.pager { display: flex; align-items: center; gap: 10px; font-variant-numeric: tabular-nums; }
.square-button {
  display: grid;
  width: 38px;
  height: 38px;
  padding: 0;
  cursor: pointer;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  background: var(--paper);
  place-items: center;
  transition: color 140ms var(--ease-out), background 140ms var(--ease-out), border-color 140ms var(--ease-out);
}
.square-button:hover:not(:disabled) { color: var(--paper); border-color: var(--blue); background: var(--blue); }
.square-button:disabled { cursor: not-allowed; opacity: .38; }
.legend { display: flex; gap: var(--space-2); align-items: center; }
.legend i { width: 12px; height: 12px; border: 1px solid var(--amber); background: var(--amber-soft); }
.preview-stage {
  position: relative;
  display: grid;
  height: min(70vh, 720px);
  padding: 34px;
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  overflow: auto;
  place-items: start center;
}
.preview-stage img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rule-strong);
  box-shadow: var(--shadow-2);
}
.preview-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--ink);
  font-size: 12px;
  transform: translate(-50%, -50%);
}
.report-pane { padding: 30px 0 0 40px; }
.summary-line {
  display: grid;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  column-gap: 10px;
}
.summary-line strong {
  color: var(--blue);
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 600;
  letter-spacing: -.05em;
  line-height: .95;
  font-variant-numeric: tabular-nums;
}
.summary-line > span { color: var(--muted); font-size: 11px; }
.summary-line p { margin: 0 0 0 var(--space-3); color: var(--muted); font-size: 11px; line-height: 1.6; }
.selection-head {
  display: flex;
  margin-top: 24px;
  align-items: center;
  justify-content: space-between;
}
.selection-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -.01em;
}
.candidate-list { max-height: 315px; margin-top: var(--space-2); overflow: auto; }
.candidate-item {
  position: relative;
  display: grid;
  padding: 16px 4px 16px 32px;
  cursor: pointer;
  border-bottom: 1px solid var(--rule);
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2);
  transition: background 140ms var(--ease-out);
}
.candidate-item:hover { background: var(--blue-soft); }
.candidate-item input { position: absolute; top: 19px; left: 3px; width: 16px; height: 16px; margin: 0; accent-color: var(--blue); }
.candidate-title { display: flex; min-width: 0; gap: var(--space-2); align-items: baseline; }
.candidate-title b {
  min-width: 0;
  overflow: hidden;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 650;
  letter-spacing: -.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.candidate-kind { color: var(--muted); font-size: 10px; letter-spacing: .04em; }
.confidence {
  color: var(--green);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}
.confidence.medium { color: var(--amber); }
.candidate-reason { margin: 6px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; grid-column: 1 / -1; }
.candidate-empty { color: var(--muted); font-size: 13px; line-height: 1.7; }
.mode-picker {
  display: grid;
  margin: 24px 0 18px;
  padding: 0;
  border: 0;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.mode-picker legend {
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  grid-column: 1 / -1;
}
.mode-picker label { cursor: pointer; }
.mode-picker input { position: absolute; opacity: 0; }
.mode-picker label span {
  display: block;
  min-height: 88px;
  padding: 14px;
  border: 1px solid var(--rule-strong);
  border-radius: 10px;
  background: var(--paper);
  transition: border-color 160ms var(--ease-out), background 160ms var(--ease-out);
}
.mode-picker input:checked + span { border-color: var(--blue); background: var(--blue-soft); box-shadow: inset 0 -3px 0 var(--blue); }
.mode-picker b { display: block; font-family: var(--font-display); font-size: 14px; letter-spacing: -.01em; }
.mode-picker small { display: block; margin-top: 6px; color: var(--muted); font-size: 10.5px; line-height: 1.5; }
.primary-button, .secondary-button {
  display: flex;
  width: 100%;
  min-height: 52px;
  padding: 0 18px;
  cursor: pointer;
  border: 1px solid var(--blue);
  border-radius: 10px;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .01em;
  text-decoration: none;
  transition: background 160ms var(--ease-out), border-color 160ms var(--ease-out), color 160ms var(--ease-out), transform 160ms var(--ease-out);
}
.primary-button { color: var(--paper); background: var(--blue); }
.primary-button:hover:not(:disabled) { background: var(--blue-deep); border-color: var(--blue-deep); transform: translateY(-1px); }
.primary-button:disabled { cursor: not-allowed; opacity: .42; }
.secondary-button { color: var(--blue-deep); background: var(--paper); }
.secondary-button:hover:not(:disabled) { color: var(--paper); background: var(--blue-deep); border-color: var(--blue-deep); }
.secondary-button:disabled { cursor: not-allowed; opacity: .42; }
.selection-hint { margin: 10px 0 0; color: var(--danger); font-size: 11px; text-align: center; }
.credit-quote {
  display: flex;
  min-height: 43px;
  margin: 16px 0 12px;
  padding: 10px 12px;
  color: var(--ink-soft);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  font-size: 11px;
  font-weight: 700;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.credit-quote.is-insufficient { color: var(--danger); background: color-mix(in oklch, var(--danger) 5%, transparent); }
.credit-quote a { flex: 0 0 auto; color: var(--blue-deep); text-underline-offset: 3px; }
.result-summary {
  max-width: 620px;
  margin: var(--space-5) 0;
  color: var(--ink-soft);
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.7;
}
.result-stats {
  display: flex;
  margin: 4px 0 30px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.result-stat { min-width: 138px; padding: 14px 20px; }
.result-stat + .result-stat { border-left: 1px solid var(--rule); }
.result-stat b {
  display: block;
  color: var(--blue);
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.result-stat span { color: var(--muted); font-size: 11px; letter-spacing: .03em; }
.result-actions { display: grid; width: min(410px, 100%); gap: 12px; }
.result-actions > .text-button { justify-self: center; margin-top: 6px; }

/* Batch, uploads and blog */
.batch-view {
  display: grid;
  width: min(1240px, calc(100% - var(--page-gutter) * 2));
  min-height: calc(100vh - 68px);
  margin: 0 auto;
  padding: clamp(64px, 7vw, 104px) 0 80px;
  grid-template-columns: minmax(0, .86fr) minmax(540px, 1.14fr);
  align-content: center;
  gap: clamp(56px, 8vw, 140px);
}
.batch-heading { align-self: center; }
.batch-heading > .text-button { display: inline-block; margin-bottom: 36px; }
.batch-heading h1 {
  max-width: 520px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 4.6vw, 5rem);
  font-weight: 600;
  letter-spacing: -.06em;
  line-height: 1.02;
}
.batch-heading p:last-child {
  max-width: 44ch;
  margin: var(--space-5) 0 0;
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.8;
}
.batch-panel {
  min-width: 0;
  padding: clamp(24px, 3vw, 44px);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow-2);
}
.batch-drop-zone {
  min-height: 230px;
  padding: 30px;
  border: 1.5px dashed var(--rule-strong);
  border-radius: var(--radius-md);
  background: var(--blue-soft);
}
.batch-drop-zone:disabled { cursor: wait; opacity: .55; }
.batch-drop-zone .drop-icon { display: none; }
.batch-file-list { max-height: 240px; margin-top: 18px; overflow: auto; border-top: 1px solid var(--rule); }
.batch-billing-note {
  display: grid;
  margin: 18px 0 0;
  padding: 13px 0;
  border-top: 1px solid var(--rule);
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 3px 16px;
}
.batch-billing-note span { color: var(--muted); font-size: 11px; }
.batch-billing-note b { font-size: 12px; font-variant-numeric: tabular-nums; }
.batch-billing-note a { color: var(--blue-deep); font-size: 11px; font-weight: 750; text-underline-offset: 3px; }
.batch-file-item {
  display: grid;
  padding: 14px 0 13px;
  border-bottom: 1px solid var(--rule);
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
}
.batch-file-item b {
  min-width: 0;
  overflow: hidden;
  font-size: 14px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.batch-file-item > span { color: var(--muted); font-size: 11px; }
.batch-file-item .text-button { font-size: 11px; }
.batch-mode-picker {
  display: grid;
  margin: 24px 0 18px;
  padding: 0;
  border: 0;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.batch-mode-picker legend {
  margin-bottom: 9px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  grid-column: 1 / -1;
}
.batch-mode-picker label { cursor: pointer; }
.batch-mode-picker input { position: absolute; opacity: 0; }
.batch-mode-picker label span {
  display: block;
  min-height: 78px;
  padding: 13px;
  border: 1px solid var(--rule-strong);
  border-radius: 10px;
  background: var(--paper);
}
.batch-mode-picker input:checked + span { border-color: var(--blue); background: var(--blue-soft); box-shadow: inset 0 -3px 0 var(--blue); }
.batch-mode-picker b { display: block; font-family: var(--font-display); font-size: 13.5px; letter-spacing: -.01em; }
.batch-mode-picker small { display: block; margin-top: 5px; color: var(--muted); font-size: 10.5px; line-height: 1.45; }
.batch-actions { display: grid; gap: 10px; }
.batch-actions .secondary-button { min-height: 40px; justify-content: center; }
.batch-progress, .batch-results {
  width: min(1240px, calc(100% - var(--page-gutter) * 2));
  margin: 0 auto;
  padding: 44px 0 80px;
}
.batch-progress-head {
  display: flex;
  margin-bottom: 16px;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}
.batch-progress-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -.04em;
}
.batch-progress-head > span { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.batch-progress .progress-track { width: 100%; height: 4px; }
.batch-progress .progress-track span { width: 0; animation: none; transition: width 180ms var(--ease-out); }
.batch-status-list, .batch-result-list { margin-top: 18px; border-top: 1px solid var(--rule); }
.batch-status-item, .batch-result-item {
  display: flex;
  min-height: 58px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.batch-status-item b, .batch-result-item b {
  min-width: 0;
  overflow: hidden;
  font-size: 14px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.batch-status { flex: 0 0 auto; color: var(--muted); font-size: 12px; }
.batch-status.is-done { color: var(--green); }
.batch-status.is-error, .batch-result-item.is-error > div > span { color: var(--danger); }
.batch-status.is-muted { color: var(--muted); }
.batch-result-item > div { display: flex; min-width: 0; flex-direction: column; gap: 4px; }
.batch-result-item > div > span { color: var(--muted); font-size: 11px; }
.batch-download {
  width: auto;
  min-width: 82px;
  min-height: 36px;
  padding: 0 13px;
  border-radius: var(--radius-sm);
  justify-content: center;
}
.batch-back-link { display: block; width: max-content; margin: 24px auto 0; }

/* Credit ledger and pricing */
.pricing-page {
  width: min(1240px, calc(100% - var(--page-gutter) * 2));
  margin: 0 auto;
  padding: clamp(64px, 7vw, 108px) 0 112px;
}
.pricing-hero {
  display: grid;
  padding-bottom: clamp(52px, 7vw, 88px);
  border-bottom: 1px solid var(--ink);
  grid-template-columns: minmax(0, 1fr) 250px;
  align-items: end;
  gap: clamp(48px, 9vw, 140px);
}
.pricing-hero h1 {
  max-width: 850px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 6vw, 6.6rem);
  font-weight: 600;
  letter-spacing: -.065em;
  line-height: .98;
}
.account-ledger { padding: 18px 0; border-top: 3px solid var(--blue); border-bottom: 1px solid var(--rule-strong); }
.account-ledger > span, .account-ledger > small { display: block; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.account-ledger > small.active-pass { margin-top: 8px; color: var(--blue); }
.account-ledger > b { display: block; margin-top: 7px; color: var(--ink-soft); font-size: 12px; font-variant-numeric: tabular-nums; letter-spacing: .08em; }
.account-ledger p { margin: 24px 0 5px; line-height: 1; }
.account-ledger p strong { color: var(--blue); font-family: var(--font-display); font-size: 48px; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -.04em; }
.account-ledger p span { color: var(--ink-soft); font-size: 12px; font-weight: 750; }
.billing-rules { display: grid; padding: 84px 0; border-bottom: 1px solid var(--rule-strong); grid-template-columns: minmax(260px, .75fr) minmax(0, 1.25fr); gap: clamp(56px, 9vw, 140px); }
.rule-intro h2, .package-heading h2, .pricing-faq h2 { margin: 0; font-family: var(--font-display); font-size: clamp(2.2rem, 3.6vw, 3.8rem); font-weight: 600; letter-spacing: -.05em; line-height: 1.04; }
.rule-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.rule-list li { display: grid; min-height: 94px; padding: 20px 0; border-bottom: 1px solid var(--rule); grid-template-columns: 48px 1fr; gap: 12px; }
.rule-list li > b { color: var(--blue); font-size: 11px; font-variant-numeric: tabular-nums; }
.rule-list div { display: grid; gap: 5px; }
.rule-list strong { font-family: var(--font-display); font-size: 18px; }
.rule-list span { color: var(--muted); font-size: 13px; }
.package-section { padding: 84px 0; }
.package-heading { display: flex; margin-bottom: 42px; align-items: end; justify-content: space-between; gap: 56px; }
.package-heading > p { max-width: 50ch; margin: 0; color: var(--muted); font-size: 13px; }
.package-list { border-top: 1px solid var(--ink); }
.package-row { display: grid; min-height: 126px; padding: 24px 0; border-bottom: 1px solid var(--rule-strong); grid-template-columns: 1.1fr 1fr 1fr 170px; align-items: center; gap: 28px; }
.package-row.is-featured { background: linear-gradient(90deg, transparent, var(--blue-soft) 8%, var(--blue-soft) 92%, transparent); }
.package-row > div span { color: var(--blue); font-family: var(--font-display); font-size: 48px; font-variant-numeric: tabular-nums; letter-spacing: -.045em; line-height: 1; }
.package-row > div small { margin-left: 7px; color: var(--muted); font-size: 10px; font-weight: 750; }
.package-row h3 { margin: 0; font-family: var(--font-display); font-size: 22px; font-weight: 600; }
.package-row p { display: grid; margin: 0; gap: 3px; }
.package-row p b { font-size: 20px; font-variant-numeric: tabular-nums; }
.package-row p span { color: var(--muted); font-size: 10px; }
.package-row button { justify-content: center; }
.pricing-faq { display: grid; padding-top: 62px; border-top: 1px solid var(--ink); grid-template-columns: 1.2fr repeat(3, 1fr); gap: 32px; }
.pricing-faq > div { padding-left: 20px; border-left: 1px solid var(--rule-strong); }
.pricing-faq > div b { color: var(--blue); font-size: 17px; font-variant-numeric: tabular-nums; }
.pricing-faq > div p { margin: 9px 0 0; color: var(--muted); font-size: 12px; line-height: 1.65; }

.content-page {
  width: min(1160px, calc(100% - var(--page-gutter) * 2));
  margin: 0 auto;
  padding: clamp(64px, 7vw, 112px) 0 104px;
}

.seo-intro {
  width: min(960px, calc(100% - var(--page-gutter) * 2));
  margin: 0 auto;
  padding: 72px 0 88px;
  border-top: 1px solid var(--ink);
}
.seo-intro h2 {
  max-width: 760px;
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: .98;
  letter-spacing: -.035em;
}
.seo-intro > p:not(.eyebrow) {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}
.seo-link-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 32px;
  border: 1px solid var(--rule);
  background: var(--rule);
}
.seo-link-grid a {
  display: grid;
  gap: 8px;
  min-height: 116px;
  padding: 20px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}
.seo-link-grid a:hover { background: var(--wash); }
.seo-link-grid span { font-family: var(--font-display); font-size: 18px; font-weight: 650; }
.seo-link-grid small { color: var(--muted); font-size: 14px; line-height: 1.45; }
.page-heading { padding-bottom: 40px; border-bottom: 1px solid var(--ink); }
.page-heading-row { display: flex; align-items: end; justify-content: space-between; gap: 34px; }
.page-heading h1 {
  max-width: 800px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.5vw, 5.2rem);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: 1.02;
}
.page-heading p:not(.eyebrow) {
  max-width: 66ch;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 16.5px;
  line-height: 1.8;
}
.compact-button { width: auto; min-height: 42px; padding: 0 16px; white-space: nowrap; justify-content: center; }
.uploads-panel { margin-top: 32px; }
.uploads-expiry { margin: 0 0 14px; color: var(--muted); font-size: 12px; }
.uploads-list { border-top: 1px solid var(--rule); }
.upload-history-item {
  display: flex;
  min-height: 100px;
  padding: 20px 2px;
  border-bottom: 1px solid var(--rule);
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.upload-history-item h2 {
  max-width: 680px;
  margin: 0;
  overflow: hidden;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.upload-history-facts { margin: 8px 0 0; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.upload-history-actions { display: flex; flex: 0 0 auto; align-items: center; gap: 16px; }
.upload-status { color: var(--amber); font-size: 12px; font-weight: 750; white-space: nowrap; }
.upload-status.is-complete { color: var(--green); }
.uploads-empty {
  display: flex;
  min-height: 280px;
  color: var(--muted);
  border-bottom: 1px solid var(--rule);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 18px;
  font-size: 15px;
}
.uploads-empty p { margin: 0; }
.uploads-empty-action { width: auto; min-height: 44px; padding: 0 17px; justify-content: center; }
.blog-page { width: min(960px, calc(100% - var(--page-gutter) * 2)); }
.blog-heading { padding-bottom: 48px; }
.blog-heading h1 { max-width: 850px; }
.blog-article { max-width: 720px; margin: 0 auto; padding: 56px 0 0; }
.article-intro {
  margin: 0 0 48px;
  color: var(--ink-soft);
  font-family: var(--font-display);
  font-size: 23px;
  letter-spacing: -.01em;
  line-height: 1.75;
}
.blog-article section { margin-top: 48px; }
.blog-article h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 650;
  letter-spacing: -.035em;
}
.blog-article p, .blog-article li {
  color: var(--ink-soft);
  font-size: 16.5px;
  line-height: 1.9;
}
.blog-article p { margin: 0; }
.blog-article ol { margin: 18px 0 0; padding-left: 26px; }
.blog-article li + li { margin-top: 10px; }
.blog-article strong { color: var(--ink); font-weight: 700; }
.blog-article code {
  padding: 3px 7px;
  color: var(--ink);
  background: var(--amber-soft);
  border-radius: 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .88em;
}
.article-faq { padding-top: 4px; }
.article-faq details { padding: 20px 0; border-bottom: 1px solid var(--rule); }
.article-faq summary { cursor: pointer; color: var(--ink); font-family: var(--font-display); font-size: 18px; font-weight: 650; }
.article-faq details p { margin-top: 12px; }
.article-cta { width: min(310px, 100%); margin-top: 56px; }
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  max-width: min(410px, calc(100% - 40px));
  padding: 13px 16px;
  color: var(--paper);
  border-radius: 10px;
  background: var(--ink);
  box-shadow: var(--shadow-3);
  font-size: 13.5px;
  line-height: 1.5;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out);
}
.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1080px) {
  .topbar { gap: 20px; }
  .local-status { display: none; }
  .upload-view, .batch-view { grid-template-columns: minmax(0, .9fr) minmax(430px, 1fr); gap: clamp(40px, 5vw, 76px); }
  .workspace-grid { grid-template-columns: minmax(0, 1fr) 360px; }
  .report-pane { padding-left: 28px; }
  .preview-pane { padding-right: 28px; }
}
@media (max-width: 960px) {
  .topbar { min-height: 62px; padding: 0 24px; gap: 15px; flex-wrap: wrap; }
  .site-nav { order: 3; width: 100%; margin: -4px 0 0; overflow-x: auto; }
  .site-nav a { min-height: 38px; flex: 0 0 auto; }
  .top-actions { margin-left: auto; }
  .pricing-hero { grid-template-columns: minmax(0, 1fr) 210px; }
  .billing-rules { grid-template-columns: 1fr; gap: 38px; }
  .package-row { grid-template-columns: 1fr 1fr; }
  .package-row > button { width: 100%; }
  .pricing-faq { grid-template-columns: 1fr 1fr; }
  .upload-view, .batch-view { display: block; width: min(620px, calc(100% - 40px)); min-height: auto; padding: 56px 0 76px; }
  .paper-atlas-copy, .batch-heading { margin-bottom: 48px; }
  .paper-atlas-workbench { margin-top: 0; }
  .upload-view .drop-zone { min-height: 480px; }
  .paper-preview { width: min(405px, 90%); }
  .workspace-view { width: min(760px, calc(100% - 40px)); }
  .workspace-grid { display: flex; flex-direction: column; }
  .preview-pane { padding-right: 0; border-right: 0; }
  .report-pane { padding: 36px 0 0; }
  .candidate-list { max-height: none; }
  .batch-panel, .batch-progress, .batch-results { width: min(620px, calc(100% - 40px)); }
  .content-page { width: min(720px, calc(100% - 40px)); padding: 64px 0 76px; }
  .blog-page { width: min(680px, calc(100% - 40px)); }
  .seo-intro { width: calc(100% - 40px); padding: 56px 0 64px; }
  .seo-link-grid { grid-template-columns: 1fr; }
  .page-heading-row { display: block; }
  .page-heading-row .compact-button { margin-top: 26px; }
  .upload-history-item { display: block; }
  .upload-history-item h2 { max-width: 100%; }
  .upload-history-actions { margin-top: 14px; justify-content: space-between; }
}
@media (max-width: 520px) {
  .topbar { padding: 8px 16px 0; }
  .brand { font-size: 21px; }
  .top-actions { min-width: 0; gap: 8px; }
  .language-select { width: 36px; max-width: 36px; padding: 8px 18px 8px 0; text-indent: -999px; }
  .credit-pill { min-width: 118px; }
  .credit-pill i { display: none; }
  .upload-view, .batch-view { width: calc(100% - 32px); padding-top: 42px; }
  .paper-atlas-workbench { padding: 0; border-radius: var(--radius-md); }
  .batch-panel { padding: 16px; border-radius: var(--radius-md); }
  .section-heading h1, .batch-heading h1 { font-size: clamp(2.55rem, 11.5vw, 3.6rem); line-height: 1.1; letter-spacing: -.035em; }
  .paper-preview { width: 100%; }
  .drop-zone { min-height: 390px; padding: 30px 18px; }
  .upload-action-label { min-height: 56px; }
  .supported-head { display: block; }
  .supported-head span { display: block; margin-top: 8px; }
  .workspace-view, .batch-progress, .batch-results, .content-page, .blog-page { width: calc(100% - 32px); }
  .workspace-view { padding-top: 30px; }
  .workspace-header { display: block; }
  .file-facts { margin-top: 16px; }
  .preview-toolbar { align-items: flex-start; gap: 12px; }
  .legend { max-width: 130px; }
  .preview-stage { height: min(62vh, 520px); padding: 14px; border-radius: var(--radius-sm); }
  .mode-picker, .batch-mode-picker { grid-template-columns: 1fr; }
  .mode-picker legend, .batch-mode-picker legend { grid-column: auto; }
  .result-stats { width: 100%; }
  .result-stat { min-width: 0; flex: 1; padding: 12px 8px; }
  .page-heading h1 { font-size: clamp(2.9rem, 12vw, 4rem); }
  .article-intro { font-size: 20px; }
  .blog-article h2 { font-size: 26px; }
  .blog-article p, .blog-article li { font-size: 15.5px; }
  .pricing-page { width: calc(100% - 32px); padding-top: 46px; }
  .pricing-hero { grid-template-columns: 1fr; gap: 38px; }
  .pricing-hero h1 { font-size: clamp(3.1rem, 15vw, 4.7rem); }
  .account-ledger { width: 100%; }
  .billing-rules, .package-section { padding: 58px 0; }
  .package-heading { display: block; }
  .package-heading > p { margin-top: 20px; }
  .package-row { grid-template-columns: 1fr auto; gap: 14px 20px; }
  .package-row > div span { font-size: 40px; }
  .package-row p { display: flex; grid-column: 1 / -1; align-items: baseline; justify-content: space-between; text-align: left; }
  .package-row p > span { display: none; }
  .package-row button { grid-column: 1 / -1; }
  .pricing-faq { grid-template-columns: 1fr; }
}
@media (hover: none) { .drop-zone:hover, .primary-button:hover:not(:disabled) { transform: none; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

.account-link {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: .01em;
  text-decoration: none;
  white-space: nowrap;
}
.account-link:hover { color: var(--blue-deep); }
.auth-shell { width: min(560px, calc(100% - 40px)); padding: 96px 0 120px; margin: 0 auto; }
.auth-card { padding: 42px; border: 1px solid var(--rule-strong); border-radius: var(--radius-md); background: var(--paper); box-shadow: var(--shadow-1); }
.auth-card h1 { max-width: 14ch; margin: 10px 0 14px; font-size: clamp(34px, 5vw, 52px); letter-spacing: -.045em; line-height: 1.02; }
.auth-lead, .auth-note { color: var(--muted); line-height: 1.65; }
.auth-tabs { display: flex; gap: 22px; margin: 32px 0 22px; border-bottom: 1px solid var(--rule-strong); }
.auth-tabs button { padding: 0 0 12px; border: 0; border-bottom: 2px solid transparent; color: var(--muted); background: transparent; font: inherit; font-size: 14px; font-weight: 760; cursor: pointer; }
.auth-tabs button.is-active { border-color: var(--blue); color: var(--ink); }
.auth-form { display: grid; gap: 17px; }
.auth-form label { display: grid; gap: 8px; color: var(--ink-soft); font-size: 13px; font-weight: 750; }
.auth-form input { width: 100%; padding: 13px 14px; border: 1px solid var(--rule-strong); border-radius: var(--radius-sm); color: var(--ink); background: #fff; font: inherit; }
.auth-form input:focus { outline: 3px solid var(--blue-soft); border-color: var(--blue); }
.auth-form .primary-button { margin-top: 8px; justify-content: center; }
.auth-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.auth-actions .primary-button, .auth-actions .secondary-button { text-decoration: none; }
.auth-status { margin: 28px 0 0; font-size: 16px; }
.auth-message { margin: 24px 0 0; color: var(--blue-deep); font-size: 14px; line-height: 1.55; }
.auth-message.is-error { color: #a32c2c; }
@media (max-width: 520px) {
  .auth-shell { width: calc(100% - 32px); padding: 52px 0 80px; }
  .auth-card { padding: 28px 22px; }
  .account-link { display: none; }
}