/* Quick Reference: 10 poster theme systems
   Scoped to .qr-poster / .qr-landing only. Site header & footer keep /learn cream-navy. */

/* ═══════════════════════════════════════════
   Shared base (overridden per theme)
   ═══════════════════════════════════════════ */
.qr-poster {
  --qr-bg: #ffffff;
  --qr-ink: #0c0c0c;
  --qr-muted: #4a4a4a;
  --qr-line: #cfcfcf;
  --qr-line-soft: #e4e4e4;
  --qr-accent: #e23a12;
  --qr-accent-ink: #c42f0c;
  --qr-charcoal: #161616;
  --qr-panel: #1c1c1c;
  --qr-gray: #f2f2f2;
  --qr-gray-deep: #ebebeb;
  --qr-serif: "Playfair Display", "Source Serif 4", Georgia, serif;
  --qr-serif-body: "Source Serif 4", Georgia, serif;
  --qr-sans: "IBM Plex Sans", "Helvetica Neue", sans-serif;
  --qr-mono: "IBM Plex Mono", ui-monospace, monospace;
  --qr-display: var(--qr-serif);
  max-width: 52rem;
  margin: 1.5rem auto 2rem;
  padding: 1.25rem 1.15rem 2.5rem;
  background: var(--qr-bg);
  color: var(--qr-ink);
  font-family: var(--qr-serif-body);
  border: 1px solid var(--qr-line);
  position: relative;
}

.qr-band-head {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--qr-ink);
  border-bottom: 1px solid var(--qr-ink);
  font-family: var(--qr-sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.qr-band-head .qr-band-left { justify-self: start; }
.qr-band-head .qr-band-center { justify-self: center; color: var(--qr-accent); white-space: nowrap; }
.qr-band-head .qr-band-right { justify-self: end; text-align: right; }

.qr-hero {
  display: grid;
  gap: 1.25rem;
  padding: 1.35rem 0 1.1rem;
  border-bottom: 1px solid var(--qr-line);
}
@media (min-width: 720px) {
  .qr-hero { grid-template-columns: 1.15fr 0.85fr; gap: 1.75rem; align-items: end; }
}
.qr-headline {
  font-family: var(--qr-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.2vw, 2.85rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  color: var(--qr-ink);
}
.qr-punch {
  font-family: var(--qr-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.15;
  margin: 0;
  color: var(--qr-accent);
}
.qr-intro {
  font-family: var(--qr-sans);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--qr-ink);
  margin: 0 0 0.85rem;
}
.qr-drop:first-letter {
  font-family: var(--qr-display);
  font-weight: 800;
  font-size: 3.1em;
  line-height: 0.8;
  float: left;
  margin: 0.08em 0.1em 0 0;
  color: var(--qr-accent);
}
.qr-meta-line {
  margin: 0;
  padding-top: 0.65rem;
  border-top: 1px solid var(--qr-line);
  font-family: var(--qr-sans);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--qr-muted);
}

.qr-why { display: grid; gap: 0; border-bottom: 1px solid var(--qr-line); }
@media (min-width: 640px) { .qr-why { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 880px) {
  .qr-why.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .qr-why.cols-4 { grid-template-columns: repeat(4, 1fr); }
}
.qr-why-col { padding: 1rem 0.9rem 1.1rem; border-bottom: 1px solid var(--qr-line-soft); }
@media (min-width: 640px) {
  .qr-why-col { border-bottom: none; border-right: 1px solid var(--qr-line); }
  .qr-why-col:nth-child(2n) { border-right: none; }
}
@media (min-width: 880px) {
  .qr-why.cols-3 .qr-why-col,
  .qr-why.cols-4 .qr-why-col { border-right: 1px solid var(--qr-line); }
  .qr-why.cols-3 .qr-why-col:nth-child(3n),
  .qr-why.cols-4 .qr-why-col:nth-child(4n) { border-right: none; }
  .qr-why.cols-3 .qr-why-col:nth-child(2n),
  .qr-why.cols-4 .qr-why-col:nth-child(2n) { border-right: 1px solid var(--qr-line); }
}
.qr-why-num {
  font-family: var(--qr-display);
  font-weight: 800;
  font-size: 2rem;
  line-height: 1;
  color: var(--qr-accent);
  margin: 0 0 0.35rem;
}
.qr-why-col h3 {
  font-family: var(--qr-sans);
  font-size: 0.82rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--qr-ink);
}
.qr-why-col p {
  margin: 0;
  font-family: var(--qr-serif-body);
  font-size: 0.86rem;
  line-height: 1.4;
  color: var(--qr-ink);
}

.qr-split { display: grid; gap: 0; border-bottom: 1px solid var(--qr-line); }
@media (min-width: 780px) {
  .qr-split { grid-template-columns: minmax(12rem, 0.38fr) 1fr; }
  .qr-split.protocol-only { grid-template-columns: 1fr; }
}
.qr-protocol {
  background: var(--qr-panel);
  color: #f5f5f5;
  padding: 1.15rem 1.1rem 1.25rem;
}
.qr-protocol h2 {
  font-family: var(--qr-display);
  font-weight: 700;
  font-size: 1.35rem;
  margin: 0 0 0.85rem;
  color: #fff;
}
.qr-protocol-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 0.7rem;
}
.qr-protocol-list li {
  display: grid; grid-template-columns: 1.4rem 1fr; gap: 0.45rem; align-items: start;
}
.qr-step-num {
  font-family: var(--qr-display);
  font-style: italic;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--qr-accent);
  line-height: 1.35;
}
.qr-protocol-list strong {
  font-family: var(--qr-sans);
  font-size: 0.84rem;
  font-weight: 700;
  color: #fff;
}
.qr-protocol-list span {
  font-family: var(--qr-sans);
  font-size: 0.8rem;
  line-height: 1.4;
  color: #d8d8d8;
}
.qr-protocol-foot {
  margin: 1rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid #333;
  font-family: var(--qr-sans);
  font-size: 0.68rem;
  line-height: 1.4;
  color: #9a9a9a;
}

.qr-example { padding: 1.15rem 1.1rem 1.25rem; background: var(--qr-bg); }
.qr-example-head { margin-bottom: 0.85rem; }
.qr-example-head h2 {
  font-family: var(--qr-display);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 0 0.25rem;
  color: var(--qr-ink);
}
.qr-example-eye {
  margin: 0;
  font-family: var(--qr-sans);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8a8a8a;
}
.qr-ex-grid { display: grid; gap: 0.75rem; }
@media (min-width: 640px) { .qr-ex-grid { grid-template-columns: 1fr 1fr; } }
.qr-ex-label {
  margin: 0 0 0.3rem;
  font-family: var(--qr-sans);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--qr-accent);
}
.qr-ex-sec p,
.qr-ex-half p {
  margin: 0;
  font-family: var(--qr-serif-body);
  font-size: 0.86rem;
  line-height: 1.4;
  color: var(--qr-ink);
}
.qr-ex-split { display: grid; gap: 0.75rem; grid-column: 1 / -1; }
@media (min-width: 560px) { .qr-ex-split { grid-template-columns: 1fr 1fr; } }
.qr-ex-half { padding: 0.65rem 0.7rem; background: var(--qr-gray); }

.qr-strategies { display: grid; gap: 0; border-bottom: 1px solid var(--qr-line); }
@media (min-width: 720px) { .qr-strategies { grid-template-columns: repeat(3, 1fr); } }
.qr-strat { padding: 1.1rem 0.95rem 1.2rem; border-bottom: 1px solid var(--qr-line-soft); }
@media (min-width: 720px) {
  .qr-strat { border-bottom: none; border-right: 1px solid var(--qr-line); }
  .qr-strat:last-child { border-right: none; }
}
.qr-strat h3 {
  font-family: var(--qr-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 0.65rem;
  color: var(--qr-ink);
}
.qr-strat ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.55rem; }
.qr-strat li { font-family: var(--qr-sans); font-size: 0.82rem; line-height: 1.4; color: var(--qr-ink); }
.qr-strat li strong { font-weight: 700; }

.qr-dense { border-bottom: 1px solid var(--qr-line); padding: 0.25rem 0 0.5rem; }
.qr-dense-row {
  display: grid; grid-template-columns: 2.8rem 1fr; gap: 0.75rem;
  padding: 0.65rem 0.15rem; border-bottom: 1px solid var(--qr-line-soft); align-items: start;
}
.qr-dense-row:last-child { border-bottom: none; }
.qr-dense-id {
  font-family: var(--qr-sans); font-weight: 700; font-size: 0.8rem;
  color: var(--qr-accent); text-decoration: none; padding-top: 0.1rem;
}
.qr-dense-row h3 { font-family: var(--qr-display); font-size: 0.98rem; margin: 0 0 0.2rem; }
.qr-dense-row h3 a { color: var(--qr-ink); text-decoration: none; }
.qr-dense-row h3 a:hover { color: var(--qr-accent); }
.qr-dense-row p { margin: 0; font-family: var(--qr-sans); font-size: 0.82rem; line-height: 1.4; color: var(--qr-muted); }
.qr-dense-meta {
  margin-top: 0.25rem !important; font-size: 0.68rem !important;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--qr-accent-ink) !important;
}

.qr-method-row {
  list-style: none; margin: 0; padding: 0.65rem 0;
  display: flex; flex-wrap: wrap; gap: 0.45rem 1rem;
  border-bottom: 1px solid var(--qr-line); font-family: var(--qr-sans);
}
.qr-method-row li { font-size: 0.75rem; display: flex; flex-direction: column; gap: 0.08rem; }
.qr-method-row a { text-decoration: none; color: var(--qr-ink); font-weight: 600; }
.qr-method-row a:hover { color: var(--qr-accent); }
.qr-method-row .method-id { color: var(--qr-accent); }
.qr-meta { font-size: 0.65rem; color: var(--qr-muted); }

.qr-prompts { display: grid; gap: 0.65rem; padding: 1rem 0; }
@media (min-width: 720px) { .qr-prompts.cols-2 { grid-template-columns: 1fr 1fr; } }
.qr-prompt { margin: 0; padding: 0.85rem 0.95rem 1rem; background: var(--qr-gray); border: none; }
.qr-prompt .prompt-head {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; margin-bottom: 0.55rem;
}
.qr-prompt h3 {
  margin: 0; font-family: var(--qr-sans); font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--qr-ink);
}
.qr-prompt .btn,
.qr-prompt [data-copy] {
  font-family: var(--qr-sans); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
  background: var(--qr-ink); color: #fff; border: none; border-radius: 0;
  padding: 0.35rem 0.65rem; cursor: pointer;
}
.qr-prompt .btn:hover,
.qr-prompt [data-copy]:hover { background: var(--qr-accent); }
.qr-prompt .prompt-block {
  margin: 0; padding: 0; background: transparent; border: none; white-space: pre-wrap;
  font-family: var(--qr-sans); font-size: 0.8rem; line-height: 1.45; color: var(--qr-ink);
}
.qr-prompt .prompt-block code { font-family: inherit; font-size: inherit; background: none; color: inherit; }

.qr-tell {
  background: var(--qr-accent);
  color: var(--qr-ink);
  padding: 1rem 1.1rem 1.15rem;
  margin: 0.15rem 0 0;
}
.qr-tell h2 {
  margin: 0 0 0.4rem;
  font-family: var(--qr-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qr-ink);
}
.qr-tell p {
  margin: 0;
  font-family: var(--qr-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: 1.3;
  color: var(--qr-ink);
}

.qr-poster-foot {
  margin-top: 0.85rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--qr-ink);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  align-items: flex-end;
  text-align: right;
}
.qr-evidence {
  margin: 0; font-family: var(--qr-sans); font-size: 0.72rem; line-height: 1.4;
  color: var(--qr-muted); max-width: 36rem;
}
.qr-anchor {
  margin: 0; font-family: var(--qr-sans); font-size: 0.92rem; font-weight: 700; color: var(--qr-ink);
}
.qr-nav-links { margin: 0.35rem 0 0; font-family: var(--qr-sans); font-size: 0.75rem; color: var(--qr-muted); }
.qr-nav-links a { color: var(--qr-ink); text-decoration: none; font-weight: 600; }
.qr-nav-links a:hover { color: var(--qr-accent); }

/* ═══════════════════════════════════════════
   THEME 01 · Typographic Punch (classic-split)
   ═══════════════════════════════════════════ */
.qr-theme-01 {
  --qr-bg: #ffffff;
  --qr-ink: #0c0c0c;
  --qr-muted: #4a4a4a;
  --qr-line: #cfcfcf;
  --qr-accent: #e23a12;
  --qr-accent-ink: #c42f0c;
  --qr-panel: #1c1c1c;
  --qr-gray: #f2f2f2;
  --qr-display: "Playfair Display", Georgia, serif;
  --qr-serif-body: "Source Serif 4", Georgia, serif;
  --qr-sans: "IBM Plex Sans", sans-serif;
}

/* ═══════════════════════════════════════════
   THEME 02 · Academic Journal (side-rail)
   ═══════════════════════════════════════════ */
.qr-theme-02 {
  --qr-bg: #f7f3ea;
  --qr-ink: #1a2744;
  --qr-muted: #5a6478;
  --qr-line: #c5bba8;
  --qr-line-soft: #ddd4c4;
  --qr-accent: #8b1e3f;
  --qr-accent-ink: #6e1732;
  --qr-panel: #1a2744;
  --qr-gray: #efe9dc;
  --qr-display: "Libre Baskerville", Georgia, serif;
  --qr-serif-body: "Libre Baskerville", Georgia, serif;
  --qr-sans: "Source Sans 3", sans-serif;
  max-width: 56rem;
  border: none;
  box-shadow: inset 0 0 0 1px var(--qr-line);
  padding: 1.5rem 1.35rem 2.75rem;
}
.qr-theme-02 .qr-punch { font-style: italic; color: var(--qr-accent); }
.qr-theme-02 .qr-tell {
  background: transparent;
  border: 1px solid var(--qr-accent);
  color: var(--qr-ink);
  padding: 0.85rem;
}
.qr-theme-02 .qr-tell h2 { color: var(--qr-accent); letter-spacing: 0.18em; }
.qr-theme-02 .qr-tell p { font-size: 0.95rem; font-weight: 700; }

.qr-layout-side-rail .qr-rail-shell {
  display: grid;
  gap: 1.25rem;
  margin-top: 0.5rem;
}
@media (min-width: 860px) {
  .qr-layout-side-rail .qr-rail-shell {
    grid-template-columns: minmax(0, 1fr) minmax(13rem, 0.34fr);
    gap: 1.75rem;
    align-items: start;
  }
  .qr-layout-side-rail .qr-rail-side {
    position: sticky;
    top: 1rem;
  }
}
.qr-layout-side-rail .qr-rail-main .qr-hero {
  grid-template-columns: 1fr;
  border-bottom: 2px solid var(--qr-ink);
}
.qr-layout-side-rail .qr-rail-side .qr-protocol {
  margin-bottom: 0.75rem;
}
.qr-layout-side-rail .qr-why {
  border: none;
  column-count: 1;
}
@media (min-width: 640px) {
  .qr-layout-side-rail .qr-why.cols-3,
  .qr-layout-side-rail .qr-why.cols-4,
  .qr-layout-side-rail .qr-why { grid-template-columns: 1fr; }
}
.qr-layout-side-rail .qr-why-col {
  border: none;
  border-bottom: 1px dotted var(--qr-line);
  padding-left: 0;
  padding-right: 0;
}
.qr-layout-side-rail .qr-why-num {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--qr-sans);
  font-weight: 700;
}

/* ═══════════════════════════════════════════
   THEME 03 · Blueprint Spec (blueprint-grid)
   ═══════════════════════════════════════════ */
.qr-theme-03 {
  --qr-bg: #0b1f33;
  --qr-ink: #d7eefc;
  --qr-muted: #7fb0cc;
  --qr-line: #1e4a66;
  --qr-line-soft: #163a52;
  --qr-accent: #3ec6ff;
  --qr-accent-ink: #7ad8ff;
  --qr-panel: #072036;
  --qr-gray: #0f2a42;
  --qr-display: "Space Grotesk", sans-serif;
  --qr-serif-body: "Space Grotesk", sans-serif;
  --qr-sans: "Space Grotesk", sans-serif;
  --qr-mono: "IBM Plex Mono", monospace;
  border: 1px solid var(--qr-accent);
  background:
    linear-gradient(rgba(62, 198, 255, 0.06) 1px, transparent 1px) 0 0 / 100% 24px,
    linear-gradient(90deg, rgba(62, 198, 255, 0.06) 1px, transparent 1px) 0 0 / 24px 100%,
    var(--qr-bg);
}
.qr-theme-03 .qr-band-head {
  border-color: var(--qr-accent);
  font-family: var(--qr-mono);
  letter-spacing: 0.08em;
}
.qr-theme-03 .qr-headline {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
}
.qr-theme-03 .qr-punch { font-style: normal; font-family: var(--qr-mono); font-size: 1rem; }
.qr-theme-03 .qr-drop:first-letter { font-family: var(--qr-mono); }
.qr-theme-03 .qr-protocol { border: 1px solid var(--qr-accent); background: rgba(7, 32, 54, 0.92); }
.qr-theme-03 .qr-protocol-list span { color: #a8d4ea; }
.qr-theme-03 .qr-tell {
  background: transparent;
  border: 2px solid var(--qr-accent);
  color: var(--qr-accent);
}
.qr-theme-03 .qr-tell h2,
.qr-theme-03 .qr-tell p { color: var(--qr-accent); font-family: var(--qr-mono); }
.qr-theme-03 .qr-prompt { background: var(--qr-gray); border: 1px dashed var(--qr-line); }
.qr-theme-03 .qr-prompt .btn,
.qr-theme-03 .qr-prompt [data-copy] { background: var(--qr-accent); color: #041018; }
.qr-theme-03 .qr-ex-half { background: rgba(62, 198, 255, 0.08); }
.qr-theme-03 .qr-poster-foot { border-color: var(--qr-accent); }
.qr-theme-03 .qr-nav-links a { color: var(--qr-accent-ink); }

.qr-layout-blueprint-grid .qr-blueprint-plate {
  border: 1px solid var(--qr-line);
  padding: 0.35rem;
  margin: 0.75rem 0;
}
.qr-layout-blueprint-grid .qr-blueprint-plate > * {
  border-color: var(--qr-line) !important;
}

/* ═══════════════════════════════════════════
   THEME 04 · Mid-Century Block (asymmetric)
   ═══════════════════════════════════════════ */
.qr-theme-04 {
  --qr-bg: #f3efe4;
  --qr-ink: #1f2a24;
  --qr-muted: #5d6a60;
  --qr-line: #d2c7b0;
  --qr-accent: #d94929;
  --qr-accent-ink: #b53a1f;
  --qr-panel: #1f5c56;
  --qr-gray: #e7dfcf;
  --qr-display: "Fraunces", Georgia, serif;
  --qr-serif-body: "Fraunces", Georgia, serif;
  --qr-sans: "Outfit", sans-serif;
  border: none;
  padding: 0;
  overflow: hidden;
}
.qr-theme-04 .qr-band-head {
  background: #1f2a24;
  color: #f3efe4;
  border: none;
  padding: 0.7rem 1.15rem;
}
.qr-theme-04 .qr-band-center { color: #f0c24b; }
.qr-theme-04 .qr-asym-hero {
  background: #f0c24b;
  padding: 1.25rem 1.15rem 1.4rem;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}
.qr-theme-04 .qr-asym-hero .qr-hero { border: none; padding-bottom: 0.4rem; }
.qr-theme-04 .qr-punch { color: #1f5c56; }
.qr-theme-04 .qr-asym-why { padding: 0 1.15rem; }
.qr-theme-04 .qr-why { border: none; gap: 0.75rem; padding: 1rem 0; }
@media (min-width: 640px) {
  .qr-theme-04 .qr-why { grid-template-columns: repeat(2, 1fr); }
}
.qr-theme-04 .qr-why-col {
  background: #fff;
  border: none !important;
  padding: 1rem;
  box-shadow: 6px 6px 0 #1f5c56;
}
.qr-theme-04 .qr-asym-mid {
  display: grid;
  gap: 0;
  padding: 0 1.15rem 1rem;
}
@media (min-width: 780px) {
  .qr-theme-04 .qr-asym-mid { grid-template-columns: 1.1fr 0.9fr; gap: 1rem; }
  .qr-theme-04 .qr-asym-mid .qr-example { order: 1; }
  .qr-theme-04 .qr-asym-mid .qr-protocol { order: 2; }
}
.qr-theme-04 .qr-protocol { clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%); }
.qr-theme-04 .qr-strategies,
.qr-theme-04 .qr-dense,
.qr-theme-04 .qr-prompts,
.qr-theme-04 .qr-method-row { padding-left: 1.15rem; padding-right: 1.15rem; }
.qr-theme-04 .qr-tell {
  background: #d94929;
  color: #fff;
  margin: 0;
  clip-path: polygon(0 12%, 100% 0, 100% 100%, 0 100%);
  padding: 1.4rem 1.15rem 1.25rem;
}
.qr-theme-04 .qr-tell h2,
.qr-theme-04 .qr-tell p { color: #fff; }
.qr-theme-04 .qr-poster-foot { padding: 1rem 1.15rem 1.5rem; border: none; }

/* ═══════════════════════════════════════════
   THEME 05 · Archival Stamp (stacked-bands)
   ═══════════════════════════════════════════ */
.qr-theme-05 {
  --qr-bg: #f1e6d4;
  --qr-ink: #2b2118;
  --qr-muted: #6b5848;
  --qr-line: #c9b59a;
  --qr-accent: #9c3b1e;
  --qr-accent-ink: #7a2e17;
  --qr-panel: #3a2c22;
  --qr-gray: #e8d9c2;
  --qr-display: "Newsreader", Georgia, serif;
  --qr-serif-body: "Newsreader", Georgia, serif;
  --qr-sans: "Special Elite", "Courier New", monospace;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(156, 59, 30, 0.08), transparent 45%),
    var(--qr-bg);
  border: 2px double var(--qr-ink);
}
.qr-theme-05 .qr-band-head { font-family: var(--qr-sans); letter-spacing: 0.08em; }
.qr-theme-05 .qr-headline { font-weight: 700; }
.qr-theme-05 .qr-punch { font-family: var(--qr-sans); font-style: normal; font-size: 1.1rem; }
.qr-layout-stacked-bands .qr-band-block {
  padding: 0.85rem 0.35rem;
  border-bottom: 1px solid var(--qr-line);
}
.qr-layout-stacked-bands .qr-band-hero { background: rgba(255, 255, 255, 0.35); }
.qr-layout-stacked-bands .qr-band-protocol { padding: 0; }
.qr-layout-stacked-bands .qr-band-tell { border-bottom: none; }
.qr-theme-05 .qr-tell {
  background: transparent;
  border: 3px solid var(--qr-accent);
  border-radius: 50% / 12%;
  text-align: center;
  max-width: 22rem;
  margin: 0.75rem auto;
  transform: rotate(-2deg);
  padding: 1.25rem 1rem;
}
.qr-theme-05 .qr-tell h2 { color: var(--qr-accent); }
.qr-theme-05 .qr-protocol { background: var(--qr-panel); }

/* ═══════════════════════════════════════════
   THEME 06 · Editorial Magazine (magazine-stack)
   ═══════════════════════════════════════════ */
.qr-theme-06 {
  --qr-bg: #fafafa;
  --qr-ink: #111111;
  --qr-muted: #555;
  --qr-line: #222;
  --qr-accent: #c41230;
  --qr-accent-ink: #9e0e26;
  --qr-panel: #111;
  --qr-gray: #efefef;
  --qr-display: "Oswald", Impact, sans-serif;
  --qr-serif-body: "Libre Franklin", sans-serif;
  --qr-sans: "Libre Franklin", sans-serif;
  border-left: 4px solid var(--qr-ink);
  border-right: none;
  border-top: none;
  border-bottom: none;
  max-width: 54rem;
}
.qr-theme-06 .qr-band-head {
  border-top: 4px solid var(--qr-ink);
  border-bottom: 1px solid var(--qr-ink);
  font-family: var(--qr-display);
  letter-spacing: 0.06em;
}
.qr-theme-06 .qr-headline {
  font-family: var(--qr-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 0.95;
}
.qr-theme-06 .qr-punch {
  font-family: var(--qr-serif-body);
  font-style: italic;
  font-weight: 600;
  color: var(--qr-accent);
}
.qr-theme-06 .qr-drop:first-letter { font-family: var(--qr-display); }
.qr-layout-magazine-stack .qr-mag-hero .qr-hero {
  border-bottom: 3px solid var(--qr-ink);
  padding-bottom: 1.4rem;
}
.qr-layout-magazine-stack .qr-mag-section {
  position: relative;
  padding: 1.1rem 0 0.35rem;
  border-bottom: 1px solid var(--qr-line);
}
.qr-layout-magazine-stack .qr-mag-section::before {
  content: attr(data-label);
  display: block;
  font-family: var(--qr-display);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--qr-accent);
  margin-bottom: 0.55rem;
}
.qr-theme-06 .qr-tell {
  background: var(--qr-ink);
  color: #fff;
}
.qr-theme-06 .qr-tell h2,
.qr-theme-06 .qr-tell p { color: #fff; }
.qr-theme-06 .qr-tell p { font-family: var(--qr-display); text-transform: uppercase; letter-spacing: 0.02em; }

/* ═══════════════════════════════════════════
   THEME 07 · Quiet Ma (monumental-rail)
   ═══════════════════════════════════════════ */
.qr-theme-07 {
  --qr-bg: #fcfcfb;
  --qr-ink: #1a1a1a;
  --qr-muted: #6a6a6a;
  --qr-line: #e0e0e0;
  --qr-accent: #b33a2b;
  --qr-accent-ink: #8f2e22;
  --qr-panel: #222;
  --qr-gray: #f4f4f2;
  --qr-display: "Shippori Mincho", "Times New Roman", serif;
  --qr-serif-body: "Shippori Mincho", serif;
  --qr-sans: "Zen Kaku Gothic New", sans-serif;
  border: none;
  max-width: 58rem;
  padding: 1.5rem 0 2.5rem;
}
.qr-layout-monumental-rail .qr-mono-shell {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 820px) {
  .qr-layout-monumental-rail .qr-mono-shell {
    grid-template-columns: 5.5rem minmax(0, 1fr);
    gap: 2.5rem;
  }
}
.qr-layout-monumental-rail .qr-mono-rail {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 1.25rem;
  padding: 0.5rem 0;
  border-right: 1px solid var(--qr-ink);
  min-height: 12rem;
}
@media (max-width: 819px) {
  .qr-layout-monumental-rail .qr-mono-rail {
    writing-mode: horizontal-tb;
    border-right: none;
    border-bottom: 1px solid var(--qr-ink);
    min-height: 0;
    justify-content: space-between;
    padding: 0.4rem 1.15rem;
  }
}
.qr-layout-monumental-rail .qr-mono-mark {
  margin: 0;
  font-family: var(--qr-sans);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--qr-accent);
}
.qr-layout-monumental-rail .qr-mono-short {
  margin: 0;
  font-family: var(--qr-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.qr-layout-monumental-rail .qr-mono-no {
  margin: 0;
  font-family: var(--qr-sans);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--qr-muted);
}
.qr-layout-monumental-rail .qr-mono-body { padding: 0 1.15rem; }
.qr-theme-07 .qr-band-head { border-width: 1px 0; opacity: 0.7; }
.qr-theme-07 .qr-hero {
  border: none;
  padding: 2.5rem 0 2rem;
  grid-template-columns: 1fr;
  max-width: 34rem;
}
.qr-theme-07 .qr-headline {
  font-weight: 600;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: 0.02em;
  line-height: 1.15;
}
.qr-theme-07 .qr-punch {
  font-style: normal;
  font-weight: 500;
  color: var(--qr-muted);
  font-size: 1.15rem;
  margin-top: 1rem;
}
.qr-theme-07 .qr-why { border: none; }
.qr-theme-07 .qr-why-col { border: none !important; padding: 1.25rem 0; }
.qr-theme-07 .qr-tell {
  background: transparent;
  border-top: 1px solid var(--qr-ink);
  border-bottom: 1px solid var(--qr-ink);
  padding: 1.5rem 0;
  margin: 2rem 0 0;
}
.qr-theme-07 .qr-protocol { background: var(--qr-ink); }

/* ═══════════════════════════════════════════
   THEME 08 · Bauhaus Module (module-grid)
   ═══════════════════════════════════════════ */
.qr-theme-08 {
  --qr-bg: #f5f2ea;
  --qr-ink: #111;
  --qr-muted: #444;
  --qr-line: #111;
  --qr-accent: #e22b2b;
  --qr-accent-ink: #c41f1f;
  --qr-panel: #1d4ed8;
  --qr-gray: #fff;
  --qr-display: "Archivo", Impact, sans-serif;
  --qr-serif-body: "Archivo", sans-serif;
  --qr-sans: "Space Grotesk", sans-serif;
  border: 3px solid #111;
  padding: 0;
}
.qr-theme-08 .qr-band-head {
  background: #111;
  color: #fff;
  border: none;
  padding: 0.65rem 1rem;
}
.qr-theme-08 .qr-band-center { color: #f5c518; }
.qr-theme-08 .qr-mod-hero {
  padding: 1.15rem 1rem;
  background: #f5c518;
  border-bottom: 3px solid #111;
}
.qr-theme-08 .qr-mod-hero .qr-hero { border: none; padding: 0; }
.qr-theme-08 .qr-punch { color: #1d4ed8; font-style: normal; }
.qr-layout-module-grid .qr-mod-grid {
  display: grid;
  gap: 0;
  border-top: 3px solid #111;
}
@media (min-width: 760px) {
  .qr-layout-module-grid .qr-mod-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.qr-layout-module-grid .qr-mod-cell {
  border-bottom: 3px solid #111;
  border-right: 3px solid #111;
  padding: 0;
  min-height: 8rem;
}
@media (min-width: 760px) {
  .qr-layout-module-grid .qr-mod-cell:nth-child(2n) { border-right: none; }
}
.qr-layout-module-grid .qr-mod-why { background: #fff; }
.qr-layout-module-grid .qr-mod-protocol { background: #1d4ed8; }
.qr-layout-module-grid .qr-mod-protocol .qr-protocol { background: transparent; }
.qr-layout-module-grid .qr-mod-example { background: #fff; }
.qr-layout-module-grid .qr-mod-tell { background: #e22b2b; grid-column: 1 / -1; border-right: none; }
.qr-layout-module-grid .qr-mod-tell .qr-tell {
  background: transparent; color: #fff; margin: 0; padding: 1.15rem 1rem;
}
.qr-layout-module-grid .qr-mod-tell .qr-tell h2,
.qr-layout-module-grid .qr-mod-tell .qr-tell p { color: #fff; }
.qr-theme-08 .qr-why,
.qr-theme-08 .qr-strategies,
.qr-theme-08 .qr-dense { border: none; }
.qr-theme-08 .qr-why-col,
.qr-theme-08 .qr-strat { border-color: #111 !important; }
.qr-theme-08 .qr-poster-foot { padding: 1rem; border-top: 3px solid #111; }

/* ═══════════════════════════════════════════
   THEME 09 · Botanical Field Guide (specimen)
   ═══════════════════════════════════════════ */
.qr-theme-09 {
  --qr-bg: #f6f8f2;
  --qr-ink: #243528;
  --qr-muted: #5a6b5c;
  --qr-line: #b7c4b0;
  --qr-accent: #2f6b4f;
  --qr-accent-ink: #24553f;
  --qr-panel: #2a4636;
  --qr-gray: #e8efe3;
  --qr-display: "Cormorant Garamond", Georgia, serif;
  --qr-serif-body: "Cormorant Garamond", Georgia, serif;
  --qr-sans: "Karla", sans-serif;
  border: 1px solid var(--qr-line);
  background:
    radial-gradient(circle at 90% 8%, rgba(47, 107, 79, 0.08), transparent 28%),
    var(--qr-bg);
}
.qr-theme-09 .qr-headline {
  font-weight: 600;
  font-style: italic;
  font-size: clamp(2rem, 4.5vw, 3rem);
}
.qr-theme-09 .qr-punch { color: var(--qr-accent); font-weight: 600; }
.qr-layout-specimen-cards .qr-spec-deck {
  display: grid;
  gap: 1rem;
  padding: 1rem 0;
}
@media (min-width: 720px) {
  .qr-layout-specimen-cards .qr-spec-deck { grid-template-columns: 1fr 1fr; }
}
.qr-layout-specimen-cards .qr-spec-card {
  border: 1px solid var(--qr-line);
  background: #fff;
  padding: 0.85rem 0.9rem 1rem;
  position: relative;
  box-shadow: 0 1px 0 rgba(36, 53, 40, 0.06);
}
.qr-layout-specimen-cards .qr-spec-card::before {
  content: attr(data-spec);
  display: block;
  font-family: var(--qr-sans);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--qr-accent);
  margin-bottom: 0.55rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px dashed var(--qr-line);
}
.qr-layout-specimen-cards .qr-spec-dark {
  background: var(--qr-panel);
  border-color: var(--qr-panel);
  color: #eef5ee;
}
.qr-layout-specimen-cards .qr-spec-dark .qr-protocol { background: transparent; padding: 0; }
.qr-theme-09 .qr-tell {
  background: #fff;
  border: 2px solid var(--qr-accent);
  color: var(--qr-ink);
}
.qr-theme-09 .qr-why,
.qr-theme-09 .qr-strategies { border: none; }
.qr-theme-09 .qr-why-col,
.qr-theme-09 .qr-strat { border: none !important; padding: 0.5rem 0; }

/* ═══════════════════════════════════════════
   THEME 10 · Terminal Studio (terminal-stack)
   ═══════════════════════════════════════════ */
.qr-theme-10 {
  --qr-bg: #0d1117;
  --qr-ink: #d7e0ea;
  --qr-muted: #8b9bb0;
  --qr-line: #2a3444;
  --qr-accent: #3dd68c;
  --qr-accent-ink: #7dffb3;
  --qr-panel: #161b22;
  --qr-gray: #121820;
  --qr-display: "JetBrains Mono", ui-monospace, monospace;
  --qr-serif-body: "JetBrains Mono", ui-monospace, monospace;
  --qr-sans: "IBM Plex Sans", sans-serif;
  --qr-mono: "JetBrains Mono", ui-monospace, monospace;
  border: 1px solid #30363d;
  background: #010409;
  padding: 1rem;
}
.qr-theme-10 .qr-band-head {
  border-color: #30363d;
  font-family: var(--qr-mono);
  color: var(--qr-muted);
}
.qr-theme-10 .qr-band-center { color: var(--qr-accent); }
.qr-layout-terminal-stack .qr-term-window {
  border: 1px solid #30363d;
  border-radius: 8px;
  overflow: hidden;
  background: var(--qr-bg);
  margin-top: 0.75rem;
}
.qr-layout-terminal-stack .qr-term-chrome {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.75rem;
  background: #161b22;
  border-bottom: 1px solid #30363d;
  font-family: var(--qr-mono);
  font-size: 0.72rem;
  color: var(--qr-muted);
}
.qr-layout-terminal-stack .qr-term-chrome span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #30363d;
  display: inline-block;
}
.qr-layout-terminal-stack .qr-term-chrome span:nth-child(1) { background: #ff5f56; }
.qr-layout-terminal-stack .qr-term-chrome span:nth-child(2) { background: #ffbd2e; }
.qr-layout-terminal-stack .qr-term-chrome span:nth-child(3) { background: #27c93f; }
.qr-layout-terminal-stack .qr-term-chrome code {
  margin-left: 0.5rem;
  font-family: inherit;
  color: #8b9bb0;
}
.qr-layout-terminal-stack .qr-term-body { padding: 1rem 1rem 1.25rem; }
.qr-theme-10 .qr-headline {
  font-size: clamp(1.25rem, 2.8vw, 1.75rem);
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}
.qr-theme-10 .qr-headline::before { content: "> "; color: var(--qr-accent); }
.qr-theme-10 .qr-punch {
  font-style: normal;
  font-weight: 500;
  font-size: 0.95rem;
  color: #79c0ff;
}
.qr-theme-10 .qr-drop:first-letter { float: none; font-size: inherit; margin: 0; color: var(--qr-accent); }
.qr-theme-10 .qr-intro { font-family: var(--qr-mono); font-size: 0.82rem; }
.qr-theme-10 .qr-protocol { background: #161b22; border: 1px solid #30363d; }
.qr-theme-10 .qr-tell {
  background: transparent;
  border: 1px solid var(--qr-accent);
  color: var(--qr-accent);
}
.qr-theme-10 .qr-tell h2,
.qr-theme-10 .qr-tell p { color: var(--qr-accent); font-family: var(--qr-mono); }
.qr-theme-10 .qr-prompt { background: #121820; border: 1px solid #30363d; }
.qr-theme-10 .qr-prompt .btn,
.qr-theme-10 .qr-prompt [data-copy] {
  background: var(--qr-accent);
  color: #04120a;
}
.qr-theme-10 .qr-ex-half { background: #121820; }
.qr-theme-10 .qr-poster-foot { border-color: #30363d; }
.qr-theme-10 .qr-nav-links a { color: #79c0ff; }

/* ═══════════════════════════════════════════
   Landing (site cream page; cards echo themes)
   ═══════════════════════════════════════════ */
.qr-landing { background: transparent; }
.qr-landing .section-inner { max-width: 54rem; }
.qr-landing .eyebrow {
  font-family: "IBM Plex Sans", sans-serif;
  color: #8b4513;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.qr-landing h1 {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(1.85rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: #1a2744;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.qr-landing .section-lede {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1rem;
  color: #5a6478;
  max-width: 40rem;
}
.qr-landing-group { margin-top: 2.25rem; }
.qr-landing-group h2 {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: #1a2744;
  margin: 0 0 0.85rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #1a2744;
}
.qr-landing-grid { display: grid; gap: 0.65rem; }
@media (min-width: 700px) { .qr-landing-grid { grid-template-columns: 1fr 1fr; } }

.qr-landing-card {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.85rem;
  padding: 0.85rem 0.95rem;
  background: #fff;
  border: 1px solid #d5cfc4;
  text-decoration: none;
  color: inherit;
  align-items: start;
  border-radius: 0;
}
.qr-landing-card:hover { border-color: #1a2744; }
.qr-landing-card h3 {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
  color: #1a2744;
}
.qr-landing-card p {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.84rem;
  color: #5a6478;
  line-height: 1.4;
}
.qr-anchor.landing-anchor {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid #1a2744;
  text-align: right;
  color: #1a2744;
}

/* Theme-echo borders on landing cards */
.qr-card-theme-01 { border-left: 3px solid #e23a12; }
.qr-card-theme-02 { border-left: 3px solid #8b1e3f; background: #fbf8f1; }
.qr-card-theme-03 { border-left: 3px solid #3ec6ff; background: #0b1f33; }
.qr-card-theme-03 h3, .qr-card-theme-03 p { color: #d7eefc; }
.qr-card-theme-04 { border-left: 3px solid #d94929; background: #f7f1df; }
.qr-card-theme-05 { border-left: 3px solid #9c3b1e; background: #f4ead9; }
.qr-card-theme-06 { border-left: 4px solid #111; }
.qr-card-theme-07 { border-left: 1px solid #1a1a1a; background: #fcfcfb; }
.qr-card-theme-08 { border: 2px solid #111; border-left-width: 6px; border-left-color: #e22b2b; }
.qr-card-theme-09 { border-left: 3px solid #2f6b4f; background: #f3f7ef; }
.qr-card-theme-10 { border-left: 3px solid #3dd68c; background: #0d1117; }
.qr-card-theme-10 h3, .qr-card-theme-10 p { color: #d7e0ea; }

.qr-thumb {
  width: 4.5rem; height: 3.4rem; border: 1px solid currentColor;
  background: #fff; display: grid; gap: 2px; padding: 4px; color: #1a2744;
}
.qr-thumb span { display: block; background: currentColor; opacity: 0.55; min-height: 3px; }
.qr-thumb-poster { grid-template-rows: 4px 10px 1fr 6px; }
.qr-thumb-poster span:nth-child(1) { opacity: 1; }
.qr-thumb-poster span:nth-child(2) { width: 70%; opacity: 1; background: #e23a12; }
.qr-thumb-poster span:nth-child(4) { background: #e23a12; opacity: 1; }
.qr-thumb-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
.qr-thumb-steps { grid-template-columns: 1fr 1fr 1fr; grid-template-rows: 1fr 1fr; }
.qr-thumb-bands { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr 1fr; }
.qr-thumb-list { grid-template-columns: 1fr; align-content: space-evenly; }
.qr-thumb-dual { grid-template-columns: 1fr 1fr; }
.qr-thumb-rail { grid-template-columns: 0.28fr 1fr; }
.qr-thumb-blocks { grid-template-columns: 1.2fr 0.8fr; grid-template-rows: 1fr 0.7fr; }
.qr-thumb-blocks span:first-child { grid-row: 1 / -1; }

.qr-thumb-theme-01 { color: #0c0c0c; }
.qr-thumb-theme-01 span:nth-child(2),
.qr-thumb-theme-01 span:nth-child(4) { background: #e23a12; }
.qr-thumb-theme-02 { color: #1a2744; background: #f7f3ea; }
.qr-thumb-theme-03 { color: #3ec6ff; background: #0b1f33; }
.qr-thumb-theme-04 { color: #1f5c56; background: #f0c24b; }
.qr-thumb-theme-05 { color: #9c3b1e; background: #f1e6d4; }
.qr-thumb-theme-06 { color: #c41230; background: #fafafa; }
.qr-thumb-theme-07 { color: #b33a2b; background: #fcfcfb; }
.qr-thumb-theme-08 { color: #111; background: #f5c518; border-width: 2px; }
.qr-thumb-theme-09 { color: #2f6b4f; background: #f6f8f2; }
.qr-thumb-theme-10 { color: #3dd68c; background: #0d1117; }

/* ═══════════════════════════════════════════
   Print
   ═══════════════════════════════════════════ */
@media print {
  .site-header,
  .site-footer,
  .nav-toggle,
  .skip-link,
  .qr-nav-links,
  .qr-prompt [data-copy],
  .qr-prompt .btn {
    display: none !important;
  }
  body.page-qr,
  body.page-poster {
    background: #fff !important;
    font-size: 9.5pt;
  }
  .qr-poster {
    border: none !important;
    margin: 0 !important;
    max-width: none !important;
    padding: 0 !important;
    box-shadow: none !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .qr-protocol,
  .qr-tell,
  .qr-prompt,
  .qr-theme-03,
  .qr-theme-04 .qr-asym-hero,
  .qr-theme-08 .qr-mod-hero,
  .qr-theme-10,
  .qr-layout-terminal-stack .qr-term-window {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .qr-why-col,
  .qr-strat,
  .qr-ex-sec,
  .qr-prompt,
  .qr-dense-row,
  .qr-tell,
  .qr-spec-card,
  .qr-mod-cell {
    break-inside: avoid;
  }
  @page { size: auto; margin: 10mm; }
}

@media (max-width: 480px) {
  .qr-band-head {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 0.2rem;
  }
  .qr-band-head .qr-band-left,
  .qr-band-head .qr-band-center,
  .qr-band-head .qr-band-right {
    justify-self: center;
    text-align: center;
  }
  .qr-landing-card { grid-template-columns: 1fr; }
  .qr-thumb { width: 100%; height: 2.5rem; }
  .qr-poster-foot { align-items: flex-start; text-align: left; }
}