/* MetaStrip — Privacy redacted / evidence desk. Style ≠ recolor of sisters. */
:root {
  --bg: #f2f0eb;
  --concrete: #e4e1da;
  --paper: #faf9f6;
  --ink: #141414;
  --muted: #5a5752;
  --line: #c8c4bb;
  --alert: #c1121f;
  --alert-ink: #ffffff;
  --stamp: #1a1a1a;
  --focus: #3d5a80;
  --ok: #1b5e3b;
  --radius: 2px;
  --page-max: 72rem;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --stencil: "Arial Black", "Helvetica Neue Condensed Black", Impact, Haettenschweiler, system-ui, sans-serif;
  --text-base: 1rem;
  --text-sm: 0.875rem;
  --text-xs: 0.75rem;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html[lang^="zh"] body { line-height: 1.65; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--ink);
  background:
    repeating-linear-gradient(0deg, transparent, transparent 23px, rgba(20,20,20,0.03) 23px, rgba(20,20,20,0.03) 24px),
    var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--ink); }
a:hover { text-decoration: underline; }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--alert); color: var(--alert-ink); padding: 0.5rem 0.75rem;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }
.wrap {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  padding-top: max(0.35rem, var(--safe-t));
  padding-bottom: max(2.5rem, var(--safe-b));
}

/* —— Mast: concrete bar, stamp mark —— */
.mast {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.5rem 0.75rem;
  padding: 0.75rem 0 0.85rem;
  border-bottom: 3px solid var(--ink);
  margin-bottom: 1rem;
  background: linear-gradient(180deg, var(--concrete) 0%, transparent 100%);
  margin-left: -0.35rem; margin-right: -0.35rem;
  padding-left: 0.35rem; padding-right: 0.35rem;
}
.brand a {
  display: flex; align-items: center; gap: 0.55rem;
  text-decoration: none; color: inherit;
}
.brand-mark {
  display: block;
  width: 2.1rem;
  height: 2.1rem;
  flex: 0 0 auto;
  border-radius: var(--radius);
  transform: rotate(-6deg);
}
.brand-name {
  font-family: var(--stencil);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: var(--text-xs);
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 0.05rem;
}
.top-actions {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.4rem;
  justify-content: flex-end;
}
.lang-switch { display: inline-flex; gap: 0.15rem; border: 1px solid var(--line); border-radius: var(--radius); }
.lang-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.35rem; min-height: 44px; padding: 0.45rem 0.85rem;
  font-family: var(--mono); font-size: var(--text-sm);
  letter-spacing: 0.02em;
  border: 2px solid var(--ink); border-radius: var(--radius);
  background: var(--paper); color: var(--ink); cursor: pointer;
  text-decoration: none; white-space: nowrap;
}
.btn:hover { background: var(--concrete); text-decoration: none; }
.btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.btn-primary { background: var(--ink); color: var(--paper); font-weight: 600; }
.btn-primary:hover { background: #333; color: var(--paper); }
.btn-alert {
  background: var(--alert); color: var(--alert-ink); border-color: var(--alert);
  font-family: var(--stencil); letter-spacing: 0.04em; text-transform: uppercase;
}
.btn-alert:hover { background: #9e0e18; color: var(--alert-ink); }
.btn-secondary { background: var(--paper); }
.btn-ghost { border-color: transparent; background: transparent; border-width: 2px; }
.btn-ghost:hover { border-color: var(--line); background: var(--paper); }
.btn-sm { min-height: 36px; padding: 0.3rem 0.65rem; font-size: var(--text-xs); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* Header XOR — hard */
.nav-toggle,
.btn.nav-toggle { display: none; }
.nav-guides {
  display: flex; flex-wrap: wrap; gap: 0.25rem 0.65rem; align-items: center;
}
.nav-guides a {
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.04em;
  text-decoration: none; color: var(--muted);
}
.nav-guides a:hover { color: var(--ink); text-decoration: underline; }
@media (min-width: 900px) {
  .nav-toggle,
  .btn.nav-toggle { display: none !important; }
  .nav-guides { display: flex !important; position: static; }
}
@media (max-width: 899px) {
  .nav-toggle,
  .btn.nav-toggle { display: inline-flex !important; }
  .nav-guides {
    display: none; position: absolute; right: 0.5rem; top: 100%;
    z-index: 40; flex-direction: column; align-items: stretch;
    background: var(--paper); border: 2px solid var(--ink);
    border-radius: var(--radius); padding: 0.5rem; min-width: 12rem;
    box-shadow: 4px 4px 0 rgba(20,20,20,0.12);
  }
  .nav-guides.is-open { display: flex; }
  .nav-guides a { padding: 0.45rem 0.5rem; min-height: 44px; display: flex; align-items: center; }
  .top-converter-full { display: none; }
  .top-converter-short { display: inline; }
}
@media (min-width: 900px) {
  .top-converter-full { display: inline; }
  .top-converter-short { display: none; }
}
.top-converter-short { display: none; }

.kicker {
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--alert); margin: 0 0 0.35rem;
}
h1 {
  font-family: var(--stencil);
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  letter-spacing: 0.04em; text-transform: uppercase;
  line-height: 1.15; margin: 0 0 0.5rem; font-weight: 800;
}
.lead { margin: 0 0 0.85rem; max-width: 46rem; color: var(--muted); }
.trust-line {
  display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.1rem;
}
.chip, .session-chip {
  display: inline-flex; align-items: center;
  font-family: var(--mono); font-size: var(--text-xs);
  letter-spacing: 0.03em; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.25rem 0.55rem; background: var(--paper);
}
.session-chip { border-color: var(--ink); }

/* —— Evidence desk —— */
.desk {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: stretch;
  margin-bottom: 1.25rem;
}
@media (max-width: 860px) {
  .desk { grid-template-columns: 1fr; }
}

.evidence {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  min-height: 360px;
  height: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.evidence-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.5rem; padding: 0.55rem 0.75rem;
  background: var(--concrete);
  border-bottom: 2px solid var(--ink);
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.08em;
  flex-shrink: 0;
}
.evidence-body {
  position: relative;
  flex: 1;
  min-height: 280px;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem; background: #ddd9d0;
}
.evidence-body.has-gps::after {
  content: "REDACTED";
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--stencil); font-size: clamp(2rem, 8vw, 3.5rem);
  letter-spacing: 0.2em; color: rgba(193, 18, 31, 0.18);
  transform: rotate(-18deg); pointer-events: none;
  text-shadow: 0 0 1px rgba(0,0,0,0.1);
  z-index: 2;
}
.preview-frame {
  position: relative; z-index: 1; max-width: 100%;
  border: 2px solid var(--ink); background: #000;
  box-shadow: 6px 6px 0 rgba(20,20,20,0.15);
}
.preview-frame img {
  display: block; max-width: 100%; max-height: 360px;
  object-fit: contain; vertical-align: middle;
}
.gps-stamp {
  position: absolute; top: 0.75rem; left: 0.75rem; z-index: 3;
  font-family: var(--stencil); font-size: 0.85rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--alert-ink); background: var(--alert);
  border: 2px solid var(--ink); padding: 0.35rem 0.55rem;
  transform: rotate(-4deg);
  box-shadow: 3px 3px 0 rgba(20,20,20,0.25);
  display: none;
}
.evidence-body.has-gps .gps-stamp { display: inline-block; }
.gps-stamp.clean {
  background: var(--ok); display: inline-block; transform: rotate(2deg);
}

/* Dropzone inside evidence when empty */
.dropzone {
  width: 100%;
  flex: 1;
  align-self: stretch;
  min-height: 220px;
  border: 2px dashed var(--ink);
  border-radius: var(--radius);
  background: var(--paper);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.55rem; padding: 1.25rem; text-align: center; cursor: pointer;
}
.dropzone.is-drag {
  border-style: solid; background: #fff5f5;
  outline: 3px solid var(--alert); outline-offset: 2px;
}
.drop-badge {
  width: 52px; height: 52px; border-radius: 50%;
  border: 2px solid var(--ink); background: var(--concrete);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--stencil); font-size: 0.65rem; letter-spacing: 0.04em;
  color: var(--alert);
}
.dropzone h2 {
  margin: 0; font-family: var(--stencil); font-size: 1rem;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.dropzone p { margin: 0; color: var(--muted); font-size: var(--text-base); }
.dropzone .hint {
  font-family: var(--mono); font-size: var(--text-xs);
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em;
}
.dropzone kbd {
  font-family: var(--mono); font-size: var(--text-xs);
  border: 1px solid var(--line); border-radius: 2px; padding: 0.05rem 0.3rem;
  background: var(--concrete);
}
.sample-link {
  font-family: var(--mono); font-size: var(--text-xs);
  color: var(--muted); background: none; border: none; cursor: pointer;
  text-decoration: underline; min-height: 44px;
}
.sample-link:hover { color: var(--ink); }

/* Dossier panel */
.dossier {
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  min-height: 360px;
  height: 100%;
  display: flex; flex-direction: column;
}
.dossier-head {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.5rem; padding: 0.55rem 0.75rem;
  background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.08em;
  flex-shrink: 0;
}
.dossier-actions {
  display: flex; flex-wrap: wrap; gap: 0.35rem;
  padding: 0.65rem 0.75rem;
  border-bottom: 2px solid var(--ink);
  background: var(--concrete);
  flex-shrink: 0;
}
.dossier-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.dossier-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 1.5rem 1rem;
  color: var(--muted);
  text-align: center;
}
.meta-table {
  width: 100%; border-collapse: collapse; font-size: var(--text-base);
}
.meta-table th, .meta-table td {
  padding: 0.45rem 0.75rem; text-align: left;
  border-bottom: 1px solid var(--line); vertical-align: top;
}
.meta-table th {
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted); width: 38%; font-weight: 600;
  white-space: nowrap;
}
.meta-table td { font-family: var(--mono); word-break: break-word; }
.meta-table tr.gps-row {
  background: repeating-linear-gradient(
    -45deg,
    rgba(193,18,31,0.12) 0 8px,
    rgba(26,26,26,0.08) 8px 16px
  );
}
.meta-table tr.gps-row th,
.meta-table tr.gps-row td { color: var(--alert); font-weight: 700; }
.meta-table tr.stripped th, .meta-table tr.stripped td {
  text-decoration: line-through; opacity: 0.55;
}

.batch-bar {
  display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center;
  padding: 0.75rem; margin-bottom: 1rem;
  border: 2px solid var(--ink); border-radius: var(--radius);
  background: var(--paper);
}
.batch-bar .stat {
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.04em; margin-right: auto;
}
.file-list {
  list-style: none; margin: 0; padding: 0; width: 100%;
  display: grid; gap: 0.35rem;
}
.file-list li {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  padding: 0.45rem 0.55rem; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--bg);
  font-family: var(--mono); font-size: var(--text-sm);
}
.file-list li .name { flex: 1; min-width: 8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list li .tag {
  font-size: var(--text-xs); text-transform: uppercase;
  padding: 0.1rem 0.35rem; border: 1px solid var(--ink); border-radius: 2px;
}
.file-list li .tag.gps { background: var(--alert); color: #fff; border-color: var(--alert); }
.file-list li .tag.clean { background: var(--ok); color: #fff; border-color: var(--ok); }
.file-list li.active { outline: 2px solid var(--alert); }

.progress-band {
  display: none; margin-bottom: 1rem; padding: 0.65rem 0.85rem;
  background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: var(--text-sm);
  border-radius: var(--radius);
}
.progress-band.is-on { display: block; }

.proof {
  margin: 1rem 0 1.5rem; border: 2px solid var(--ink);
  border-radius: var(--radius); background: var(--paper); padding: 0.65rem 0.9rem;
}
.proof summary {
  font-family: var(--stencil); font-size: var(--text-sm);
  letter-spacing: 0.06em; text-transform: uppercase; cursor: pointer;
}
.proof ol { margin: 0.5rem 0 0; padding-left: 1.25rem; }
.proof p { margin: 0.5rem 0 0; color: var(--muted); }

.seo-block { margin: 1.5rem 0; }
.seo-block h2 {
  font-family: var(--stencil); font-size: 1.15rem;
  letter-spacing: 0.05em; text-transform: uppercase; margin: 0 0 0.65rem;
}
.seo-copy p, .seo-copy li, .faq p {
  font-size: var(--text-base); line-height: 1.7;
}
.guide-cards {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: 0.65rem; margin-top: 0.85rem;
}
.guide-card {
  display: flex; flex-direction: column; gap: 0.25rem;
  padding: 0.75rem; border: 2px solid var(--ink); border-radius: var(--radius);
  background: var(--paper); text-decoration: none; color: inherit;
  min-height: 88px;
}
.guide-card:hover { background: var(--concrete); text-decoration: none; }
.guide-card strong {
  font-family: var(--stencil); font-size: var(--text-sm);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.guide-card span { font-size: var(--text-sm); color: var(--muted); }
.faq details {
  border-bottom: 1px solid var(--line); padding: 0.55rem 0;
}
.faq summary {
  cursor: pointer; font-weight: 600; min-height: 44px;
  display: flex; align-items: center;
}

/* Footer 3-col hard */
.site-footer {
  margin-top: 2.5rem; padding-top: 1.25rem;
  border-top: 3px solid var(--ink);
}
.site-footer a { color: var(--ink); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem 1.5rem;
}
.footer-col { min-width: 0; }
.footer-col h4 {
  font-family: var(--stencil); font-size: var(--text-sm);
  letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 0.55rem;
}
.footer-col ul {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 0.35rem;
}
.footer-col li a { display: inline-flex; min-height: 36px; align-items: center; }
.footer-copy { margin: 0 0 0.4rem; font-size: var(--text-sm); color: var(--muted); }
.footer-meta {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem;
  margin-top: 1.1rem; padding-top: 0.75rem; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted);
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}
.hidden { display: none !important; }
.heic-note {
  margin: 0.75rem 0; padding: 0.65rem 0.85rem;
  border: 2px dashed var(--alert); background: #fff5f5;
  font-size: var(--text-base);
}
.heic-note a { color: var(--alert); font-weight: 600; }

.legal-page { max-width: 42rem; }
.legal-page h1 { margin-top: 1rem; }
.legal-page h2 {
  font-family: var(--stencil); font-size: 1rem;
  letter-spacing: 0.05em; text-transform: uppercase; margin-top: 1.5rem;
}
.legal-page p, .legal-page li { font-size: var(--text-base); }

/* UX-OPT-2026-10-20 */
.limit-note {
  margin: 0.35rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.35;
  color: var(--muted, #64748b);
  max-width: 36rem;
}
.limit-note strong { color: var(--ink, #0f172a); font-weight: 600; }
.ux-banner {
  display: none;
  margin: 0.75rem 0;
  padding: 0.65rem 0.9rem;
  border-radius: 10px;
  font-size: 0.875rem;
  line-height: 1.4;
  border: 1px solid transparent;
}
.ux-banner.is-on { display: block; }
.ux-banner.is-ok {
  background: color-mix(in srgb, #10b981 12%, transparent);
  border-color: color-mix(in srgb, #10b981 35%, transparent);
  color: var(--ink, #065f46);
}
.ux-banner.is-err {
  background: color-mix(in srgb, #ef4444 10%, transparent);
  border-color: color-mix(in srgb, #ef4444 30%, transparent);
  color: var(--ink, #991b1b);
}
.ux-banner .ux-banner-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.45rem; }
.drop-sample-prominent,
.dropzone .drop-sample,
.drop-actions .drop-ghost,
.dropzone .sample-link,
.drop-strip .drop-ghost {
  font-weight: 600 !important;
  text-decoration: underline;
  text-underline-offset: 3px;
}
body {
  padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
}
@media (max-width: 480px) {
  body { padding-bottom: max(var(--sc-fb-pad, 72px), env(safe-area-inset-bottom)); }
  .batch-bar, #batchBar, .action-bar {
    padding-right: 4.25rem; /* leave room for feedback FAB */
  }
  .tool-stage, .paste-stage, .desk, .crt-bench, .studio, main {
    overflow-x: clip;
  }
}