@font-face {
  font-family: Manrope;
  src: url("/assets/vendor/manrope.woff2") format("woff2");
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}
:root {
  --bg: #f7f8fa;
  --surface: #fff;
  --ink: #202c29;
  --muted: #6b7573;
  --line: #e5e9e7;
  --soft: #f2f5f3;
  --accent: #c84228;
  --button-ink: #fff;
  --accent-soft: #fff1eb;
  --grid: #dfe5e1;
  --shadow: 0 12px 45px #263b3506;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #151c1a;
  --surface: #1d2723;
  --ink: #eff5f1;
  --muted: #a7b5ad;
  --line: #35413b;
  --soft: #26332d;
  --accent: #ff9274;
  --button-ink: #17251f;
  --accent-soft: #3a2c25;
  --grid: #36483d;
  --shadow: 0 12px 45px #0002;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 20px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Manrope, Arial, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  touch-action: manipulation;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
  color: inherit;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  border: 0;
  background: none;
}
button:hover:not(:disabled),
a:hover {
  color: var(--accent);
}
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline-offset: 1px;
}
h1,
h2,
h3,
p {
  margin: 0;
}
img {
  max-width: 100%;
}
.icon {
  width: 19px;
  height: 19px;
  vertical-align: middle;
  flex-shrink: 0;
}
:root[data-theme="dark"] .icon {
  filter: invert(0.85);
}
[hidden] {
  display: none !important;
}
.site-header {
  max-width: 1280px;
  margin: auto;
  padding: 23px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-size: 29px;
  font-weight: 800;
  letter-spacing: -1.6px;
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.brand-lockup {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
}
.brand-word {
  white-space: nowrap;
}
.brand-expansion {
  margin-top: 5px;
  font-family: Manrope, Arial, sans-serif;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .25px;
  white-space: nowrap;
  color: var(--muted);
}
.brand-mark {
  background: var(--ink);
  width: 34px;
  height: 34px;
  margin-right: 10px;
  border-radius: 9px;
  display: grid;
  place-items: center;
}
.brand-mark img {
  width: 26px;
  filter: invert(1);
}
.brand-period {
  color: var(--accent);
}
nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 12px;
  font-weight: 650;
}
.nav-active {
  color: var(--accent);
}
.text-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  padding: 0;
}
.text-button span {
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
}
.icon-button {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--surface);
}
main {
  max-width: 1160px;
  padding: 0 32px;
  margin: auto;
}
.intro {
  padding: 51px 0 37px;
  text-align: center;
}
.intro-tag {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 17px;
}
.intro-tag span {
  height: 6px;
  width: 6px;
  background: #549079;
  border-radius: 50%;
}
h1 {
  font-size: clamp(42px, 5vw, 64px);
  line-height: 1.07;
  font-weight: 800;
  letter-spacing: -3.5px;
}
h1 br {
  display: none;
}
h1 span {
  color: var(--accent);
}
.intro p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 15px;
  line-height: 1.7;
}
.mobile-break {
  display: none;
}
.studio {
  display: grid;
  grid-template-columns: 1.13fr 1fr;
  gap: 0;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
  scroll-margin-top: 24px;
}
.editor {
  padding: 27px 30px 24px;
  min-width: 0;
}
.editor-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 25px;
}
.eyebrow {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.7px;
  color: var(--muted);
}
.editor-heading h2 {
  font-size: 22px;
  letter-spacing: -0.8px;
  margin-top: 5px;
  font-weight: 750;
}
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr 1.25fr;
  border-bottom: 1px solid var(--line);
  margin-bottom: 23px;
  gap: 8px;
}
.tabs button {
  font-weight: 700;
  font-size: 12px;
  padding: 0 0 13px;
  display: flex;
  gap: 7px;
  align-items: center;
  white-space: nowrap;
  color: var(--muted);
  position: relative;
}
.tabs button span {
  width: 21px;
  height: 21px;
  display: grid;
  place-items: center;
  font-size: 10px;
  background: var(--soft);
  border-radius: 50%;
}
.tabs button[aria-selected="true"] {
  color: var(--accent);
}
.tabs button[aria-selected="true"]:after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}
.tabs button[aria-selected="true"] span {
  background: var(--accent-soft);
  color: var(--accent);
}
.section-label {
  font-size: 12px;
  font-weight: 750;
  margin-bottom: 12px;
}
.type-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
  margin-bottom: 23px;
}
.type-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 12px 4px 10px;
  font-size: 10px;
  font-weight: 650;
  transition:
    background 0.15s,
    border-color 0.15s;
}
.type-button .icon {
  width: 21px;
  height: 21px;
  opacity: 0.75;
}
.type-button.selected {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.type-button:hover {
  background: var(--soft);
}
.more-types {
  margin: -8px 0 24px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
}
.more-types summary {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 15px;
  cursor: pointer;
  list-style: none;
  font-size: 11px;
  font-weight: 750;
}
.more-types summary::-webkit-details-marker {
  display: none;
}
.more-types summary::after {
  content: "+";
  margin-left: auto;
  color: var(--accent);
  font-size: 18px;
  line-height: 1;
}
.more-types[open] summary::after {
  content: "−";
}
.more-types summary span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 450;
}
#more-type-groups {
  border-top: 1px solid var(--line);
  padding: 0 15px 15px;
}
.more-type-group h3 {
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .5px;
  margin: 17px 0 10px;
}
.more-type-group .type-grid {
  margin-bottom: 0;
}
:root[data-site="qrpattern"] .more-types {
  border-radius: 3px;
}
label {
  display: block;
  font-size: 11px;
  font-weight: 750;
  margin-bottom: 17px;
}
input:not([type="checkbox"]):not([type="range"]):not([type="color"]),
select,
textarea {
  display: block;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 12px 13px;
  color: var(--ink);
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  min-width: 0;
}
input::placeholder,
textarea::placeholder {
  color: #8a928f;
  font-weight: 400;
}
textarea {
  resize: vertical;
  min-height: 100px;
}
small {
  display: block;
  font-size: 10px;
  font-weight: 450;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 7px;
}
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.two-col > * {
  min-width: 0;
}
.tip {
  display: flex;
  gap: 10px;
  align-items: start;
  background: var(--soft);
  border-radius: 8px;
  padding: 13px;
  margin: 22px 0 19px;
}
.tip .icon {
  width: 17px;
  height: 17px;
  opacity: 0.6;
  margin-top: 2px;
}
.tip p {
  font-size: 10px;
  line-height: 1.7;
  font-weight: 650;
}
.tip span {
  font-size: 9px;
  font-weight: 450;
  color: var(--muted);
}
.next-button {
  width: 100%;
  text-align: right;
  font-size: 11px;
  font-weight: 750;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 4px;
}
.preview-panel {
  background: var(--soft);
  border-left: 1px solid var(--line);
  padding: 24px;
  align-self: stretch;
  min-width: 0;
}
.preview-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.2px;
  margin-bottom: 16px;
  color: var(--muted);
}
.live-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  letter-spacing: 0;
  font-weight: 650;
}
.live-status:before {
  content: "";
  background: #649681;
  width: 5px;
  height: 5px;
  border-radius: 50%;
}
.preview-canvas {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 290px;
  padding: 22px;
  background-color: var(--soft);
  background-image: radial-gradient(var(--grid) 1px, transparent 1px);
  background-size: 12px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
}
#qr-preview {
  width: 270px;
  max-width: 100%;
  filter: drop-shadow(0 9px 14px #0000000c);
  line-height: 0;
  transition: opacity 0.15s;
}
#qr-preview svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 5px;
}
#qr-preview.is-transparent svg {
  background-color: #fff;
  background-image:
    linear-gradient(45deg, var(--grid) 25%, transparent 25%, transparent 75%, var(--grid) 75%),
    linear-gradient(45deg, var(--grid) 25%, transparent 25%, transparent 75%, var(--grid) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 8px 8px;
}
#qr-preview[aria-busy="true"] {
  opacity: 0.4;
}
.preview-placeholder {
  font-size: 12px;
  color: var(--muted);
}
.preview-under {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 9px;
  color: var(--muted);
  padding: 12px 2px 0;
}
.export-controls {
  padding-top: 19px;
}
.export-controls label {
  margin-bottom: 10px;
}
.export-controls input,
.export-controls select {
  background: var(--surface) !important;
}
.resolution-control {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  padding: 14px 16px 12px;
  margin: 5px 0 8px;
}
.resolution-heading,
.resolution-scale {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.resolution-heading {
  font-size: 11px;
  font-weight: 700;
}
.resolution-heading strong {
  color: var(--accent);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.resolution-control input[type="range"] {
  display: block;
  width: 100%;
  margin: 17px 0 9px;
  background: transparent !important;
  cursor: pointer;
}
.resolution-scale,
.dimension-label {
  color: var(--muted);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
}
.dimension-label {
  text-align: right;
  margin-bottom: 16px;
}
.download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background: var(--accent);
  color: var(--button-ink);
  border-radius: 8px;
  min-height: 48px;
  font-size: 12px;
  font-weight: 750;
  transition:
    transform 0.15s,
    filter 0.15s;
}
.download-button:hover:not(:disabled) {
  color: var(--button-ink);
  filter: brightness(0.94);
  transform: translateY(-1px);
}
.download-button .icon {
  filter: invert(1);
}
.download-button span {
  font-size: 8px;
  background: #ffffff24;
  padding: 3px 5px;
  border-radius: 4px;
  margin-left: auto;
}
.download-button:has(span) {
  padding: 0 17px;
}
.download-button:has(span) > .icon {
  margin-right: auto;
}
.secondary-actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.scan-check {
  font-weight: 650;
}
.scan-check.pass {
  color: #649681;
}
.scan-check.fail {
  color: #b3452b;
}
.secondary-actions button {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
  font-weight: 650;
}
.secondary-actions .icon {
  width: 15px;
  height: 15px;
}
.batch {
  margin-top: 16px;
  font-size: 11px;
}
.batch summary {
  cursor: pointer;
  font-weight: 650;
}
.batch label {
  margin-top: 10px;
}
.batch .two-col {
  align-items: end;
}
.batch button {
  margin-bottom: 2px;
}
.export-note {
  text-align: center;
  font-size: 9px;
  color: var(--muted);
  margin-top: 19px;
}
.bottom-strip {
  display: flex;
  justify-content: center;
  gap: 38px;
  padding: 24px 0;
  color: var(--muted);
  font-size: 10px;
}
.bottom-strip span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.bottom-strip .icon {
  width: 14px;
  height: 14px;
  opacity: 0.65;
}
.guide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding: 74px 30px 68px;
}
.guide h2 {
  font-size: 35px;
  letter-spacing: -1.4px;
  line-height: 1.2;
  margin: 14px 0;
}
.guide p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
}
.guide ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 27px;
}
.guide li {
  display: flex;
  gap: 20px;
}
.guide li > span {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin-top: 4px;
}
.guide h3 {
  font-size: 15px;
  letter-spacing: -0.4px;
  margin-bottom: 6px;
}
.faq {
  border-top: 1px solid var(--line);
  padding: 42px 30px 60px;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 30px;
}
.faq h2 {
  font-size: 25px;
  letter-spacing: -1px;
}
.faq details {
  margin-bottom: 15px;
}
.faq summary {
  font-size: 12px;
  font-weight: 750;
  cursor: pointer;
  line-height: 1.8;
}
.faq p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.9;
  margin: 10px 0 22px;
}
footer {
  border-top: 1px solid var(--line);
  max-width: 1200px;
  margin: auto;
  padding: 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 34px;
  align-items: start;
  font-size: 10px;
  color: var(--muted);
}
footer .brand {
  color: var(--ink);
  font-size: 24px;
}
footer p {
  font-size: 10px;
  line-height: 1.7;
  max-width: 220px;
  margin-top: 10px;
}
.footer-brand,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 13px;
}
.footer-contact {
  align-items: flex-end;
}
.footer-contact a {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--ink);
  font-weight: 700;
}
footer nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: start;
  font-size: 10px;
}
footer nav div {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
footer nav strong {
  color: var(--ink);
  font-size: 10px;
}
footer nav a:hover,
.footer-contact a:hover {
  color: var(--accent);
}
.presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}
.preset {
  padding: 10px 5px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 9px;
  font-weight: 650;
}
.preset svg {
  width: 50px;
  height: 50px;
  display: block;
  margin: 0 auto 7px;
}
.color-palettes {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 7px;
  margin: 10px 0 18px;
}
.color-palette {
  min-width: 0;
  padding: 6px 5px 7px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-size: 9px;
  font-weight: 650;
  cursor: pointer;
}
.color-palette:hover,
.color-palette:focus-visible,
.color-palette[aria-pressed="true"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.palette-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  height: 35px;
  margin-bottom: 6px;
  border-radius: 5px;
  background: var(--palette-bg);
}
.palette-preview i {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--palette-code);
}
.palette-preview i:nth-child(2) { align-self: flex-start; margin-top: 8px; }
.palette-preview i:nth-child(3) { align-self: flex-end; margin-bottom: 8px; }
.advanced-design {
  border: 1px solid var(--line);
  border-radius: 9px;
  margin: 1px 0 20px;
  background: var(--surface);
}
.advanced-design summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 11px;
  font-weight: 750;
}
.advanced-design summary::-webkit-details-marker { display: none; }
.advanced-design summary::after {
  content: "+";
  margin-left: auto;
  color: var(--accent);
  font-size: 17px;
}
.advanced-design[open] summary::after { content: "−"; }
.advanced-design summary span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 450;
}
.advanced-design-body {
  border-top: 1px solid var(--line);
  padding: 16px 14px 1px;
}
.advanced-design-body .check-row { margin: 6px 0 15px; }
.eye-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 7px; margin: -4px 0 14px; }
.center-icon-picker {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: -8px 0 18px;
  background: var(--surface);
}
.center-icon-picker summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 11px;
  font-weight: 750;
}
.center-icon-picker summary::-webkit-details-marker { display: none; }
.center-icon-picker summary::after {
  content: "+";
  margin-left: auto;
  color: var(--accent);
  font-size: 17px;
}
.center-icon-picker[open] summary::after { content: "−"; }
.center-icon-picker summary span { color: var(--muted); font-size: 10px; font-weight: 450; }
.center-icon-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  padding: 14px;
  border-top: 1px solid var(--line);
}
.center-icon-button {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 5px;
  padding: 10px 3px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background: var(--surface);
  font-size: 10px;
  font-weight: 650;
  cursor: pointer;
}
.center-icon-button .icon { width: 25px; height: 25px; }
.center-icon-button:hover,
.center-icon-button:focus-visible,
.center-icon-button[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--soft);
}
:root[data-site="qrpattern"] .center-icon-picker,
:root[data-site="qrpattern"] .center-icon-button { border-radius: 3px; }
:root[data-site="qrpattern"] .color-palette,
:root[data-site="qrpattern"] .advanced-design { border-radius: 3px; }
@media (max-width: 680px) {
  .color-palettes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .advanced-design summary span { display: none; }
}
.color-field {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  background: var(--surface);
}
input[type="color"] {
  width: 27px;
  height: 27px;
  border: 0;
  padding: 0;
  cursor: pointer;
  background: none;
}
input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}
input[type="color"]::-webkit-color-swatch {
  border: 1px solid #0001;
  border-radius: 4px;
}
.color-field span {
  font-size: 10px;
  font-weight: 550;
  letter-spacing: 0.3px;
}
.check-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  font-size: 11px;
}
.check-row small {
  flex-basis: 100%;
}
input[type="checkbox"] {
  accent-color: var(--accent);
}
.upload-row {
  display: flex;
  gap: 12px;
  align-items: center;
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 13px;
  margin: 7px 0 20px;
}
.upload-row > div {
  flex: 1;
}
.upload-row strong {
  font-size: 11px;
}
.upload-row span {
  display: block;
  font-size: 9px;
  color: var(--muted);
  margin-top: 5px;
}
.small-button {
  display: flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 7px 9px;
  border-radius: 6px;
  font-size: 10px;
  cursor: pointer;
}
.upload-button {
  margin: 0;
}
.small-button .icon {
  width: 14px;
  height: 14px;
}
.frame-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 18px 0 25px;
}
.frame-options button {
  display: grid;
  justify-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  font-size: 10px;
}
.frame-options .selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.frame-demo {
  display: block;
  width: 43px;
  height: 48px;
  border-radius: 6px;
  background: var(--surface) url("/assets/vendor/icons/qrcode.svg") no-repeat
    center/31px;
}
.frame-demo.outline {
  border: 2px solid #263b35;
}
.frame-demo.solid {
  border: 5px solid #263b35;
  border-bottom-width: 10px;
}
input[type="range"] {
  accent-color: var(--accent);
  display: block;
  width: 100%;
  margin: 16px 0;
}
output {
  float: right;
  font-size: 10px;
  font-weight: 500;
  color: var(--muted);
}
#feedback {
  font-size: 11px;
  line-height: 1.6;
  color: var(--accent);
  margin-top: 9px;
}
#feedback:empty {
  display: none;
}
.warning {
  font-size: 10px;
  line-height: 1.6;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  margin-top: 12px;
}
dialog {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  max-width: 530px;
  width: calc(100% - 32px);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 25px 80px #0003;
}
dialog::backdrop {
  background: #14261d70;
  backdrop-filter: blur(4px);
}
.dialog-heading {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  margin-bottom: 24px;
}
.dialog-heading h2 {
  font-size: 23px;
  letter-spacing: -0.7px;
}
.dialog-heading p,
.muted {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  margin-top: 5px;
}
.muted {
  margin: 12px 0 20px;
}
.saved-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.saved-item div {
  flex: 1;
  min-width: 0;
}
.saved-item strong {
  display: block;
  font-size: 12px;
  overflow-wrap: anywhere;
}
.saved-item small {
  margin-top: 4px;
}
.empty-state {
  text-align: center;
  padding: 36px 20px;
  color: var(--muted);
  line-height: 1.8;
}
.empty-state .icon {
  width: 38px;
  height: 38px;
  margin-bottom: 13px;
}
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 15px);
  background: var(--ink);
  color: var(--surface);
  padding: 13px 22px;
  border-radius: 9px;
  max-width: 90%;
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s,
    transform 0.2s;
  z-index: 10;
}
#toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}
.skip {
  position: fixed;
  top: -60px;
  left: 20px;
  padding: 12px;
  background: var(--surface);
  z-index: 20;
}
.skip:focus {
  top: 10px;
}
.noscript {
  position: fixed;
  bottom: 0;
  background: #fff3cd;
  color: #573c00;
  padding: 20px;
  width: 100%;
  text-align: center;
}
@media (min-width: 1400px) {
  .intro {
    padding-top: 65px;
    padding-bottom: 45px;
  }
}
@media (max-width: 850px) {
  .site-header {
    padding: 18px 24px;
  }
  nav {
    gap: 18px;
  }
  main {
    padding: 0 22px;
  }
  .editor {
    padding: 24px 20px;
  }
  .preview-panel {
    padding: 22px 18px;
  }
  .studio {
    grid-template-columns: 1.15fr 1fr;
  }
  .tabs button {
    font-size: 10px;
  }
  .tabs button span {
    width: 17px;
    height: 17px;
  }
  .preview-canvas {
    padding: 14px;
    min-height: 260px;
  }
  h1 {
    font-size: 48px;
    letter-spacing: -2.5px;
  }
  .guide {
    padding: 55px 5px;
    gap: 30px;
  }
  .guide h2 {
    font-size: 30px;
  }
  .faq {
    padding-left: 5px;
    padding-right: 5px;
  }
  .bottom-strip {
    gap: 18px;
    font-size: 9px;
  }
}
@media (max-width: 680px) {
  .site-header {
    padding: 16px 20px;
  }
  .brand {
    font-size: 26px;
  }
  .brand-expansion {
    font-size: 8px;
    letter-spacing: 0;
  }
  .brand-mark {
    width: 30px;
    height: 30px;
  }
  nav {
    gap: 13px;
  }
  nav > a {
    display: none;
  }
  #saved-open {
    font-size: 10px;
  }
  #saved-open .icon {
    width: 16px;
  }
  main {
    padding: 0 16px;
  }
  .intro {
    padding: 35px 0 28px;
  }
  .intro-tag {
    font-size: 10px;
    margin-bottom: 13px;
  }
  h1 {
    font-size: 37px;
    letter-spacing: -2px;
  }
  h1 br {
    display: block;
  }
  .intro p {
    font-size: 12px;
    margin-top: 13px;
  }
  .mobile-break {
    display: block;
  }
  .studio {
    grid-template-columns: 1fr;
    border-radius: 14px;
  }
  .editor {
    padding: 22px;
  }
  .editor-heading {
    margin-bottom: 22px;
  }
  .tabs button {
    font-size: 12px;
  }
  .tabs button span {
    width: 21px;
    height: 21px;
  }
  .type-grid {
    gap: 8px;
  }
  .type-button {
    padding: 12px 2px;
    font-size: 10px;
  }
  .preview-panel {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 22px;
  }
  .preview-canvas {
    min-height: 300px;
  }
  #qr-preview {
    width: 285px;
  }
  .bottom-strip {
    flex-wrap: wrap;
    gap: 10px 20px;
    padding: 20px 5px;
  }
  .guide {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 45px 10px;
  }
  .guide h2 br {
    display: none;
  }
  .guide h2 {
    font-size: 29px;
  }
  .guide p br {
    display: none;
  }
  .guide ol {
    gap: 22px;
  }
  .faq {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 30px 10px;
  }
  footer {
    grid-template-columns: 1fr 1fr;
    padding: 25px 20px;
    gap: 24px;
  }
  footer nav {
    grid-column: 2;
    grid-row: 1;
  }
  footer .footer-contact {
    grid-column: 1 / -1;
    align-items: flex-start;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--line);
    padding-top: 18px;
  }
  .two-col {
    gap: 12px;
  }
  .export-controls input,
  .export-controls select {
    font-size: 12px;
  }
  input:not([type="checkbox"]):not([type="range"]):not([type="color"]),
  textarea,
  select {
    font-size: 16px;
  }
  .color-field span {
    font-size: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
@media print {
  body {
    background: white;
  }
  body > * {
    display: none !important;
  }
  body > main {
    display: block !important;
    max-width: none;
    padding: 0;
  }
  main > * {
    display: none !important;
  }
  main > .studio {
    display: block !important;
    border: 0;
    box-shadow: none;
    background: none;
  }
  .editor {
    display: none;
  }
  .preview-panel {
    display: block;
    padding: 0;
    border: 0;
    background: none;
  }
  .preview-panel > * {
    display: none !important;
  }
  .preview-panel > .preview-canvas {
    display: block !important;
    background: none;
    border: 0;
    padding: 0;
    min-height: 0;
  }
  #qr-preview {
    display: block;
    width: 100mm;
    filter: none;
    margin: 20mm auto;
  }
  #qr-preview svg {
    border-radius: 0;
  }
  .preview-placeholder {
    display: none;
  }
}
@media (min-width: 681px) and (max-height: 900px) {
  .intro {
    padding: 26px 0;
  }
  .intro-tag {
    margin-bottom: 10px;
  }
  h1 {
    font-size: 48px;
    letter-spacing: -2.5px;
  }
  .intro p {
    margin-top: 10px;
  }
  .editor {
    padding-top: 23px;
  }
  .type-button {
    padding-top: 9px;
    padding-bottom: 9px;
  }
  .tip {
    margin-top: 16px;
    margin-bottom: 14px;
  }
  .preview-canvas {
    min-height: 260px;
  }
  #qr-preview {
    width: 245px;
  }
}

:root[data-theme="dark"] .brand-mark img,
:root[data-theme="dark"] .download-button .icon {
  filter: none;
}
.legal-page{padding:76px 30px 90px;max-width:920px}.legal-page h1{font-size:clamp(42px,6vw,70px);margin:15px 0 20px}.legal-page h1 span{color:var(--accent)}.legal-lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:620px}.legal-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:56px}.legal-grid section{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px}.legal-grid h2{font-size:17px;letter-spacing:-.5px;margin-bottom:12px}.legal-grid p{font-size:12px;line-height:1.85;color:var(--muted);margin-top:12px}.legal-grid a{text-decoration:underline;text-underline-offset:3px;color:var(--accent)}
@media(max-width:680px){.legal-page{padding:48px 8px 60px}.legal-page h1{font-size:43px}.legal-lead{font-size:14px}.legal-grid{grid-template-columns:1fr;margin-top:34px}.legal-grid section{padding:20px}}
.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:760px;margin-top:48px}.auth-card,.account-panel,.admin-table-wrap{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px}.auth-card h2,.account-panel h2,.admin-table-head h2{font-size:18px;letter-spacing:-.5px;margin-bottom:22px}.account-status{margin-top:28px;color:var(--accent);font-size:12px;font-weight:700}.account-status.error,#admin-error{color:var(--accent)}.account-panel{max-width:850px;margin-top:42px}.account-panel-head,.admin-table-head{display:flex;justify-content:space-between;align-items:start;gap:20px}.admin-page{padding:68px 30px 90px;max-width:1120px}.admin-page h1{font-size:clamp(42px,6vw,70px);margin:15px 0 20px}.admin-page h1 span{color:var(--accent)}.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:44px 0 24px}.admin-stat{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:19px}.admin-stat strong{display:block;font-size:25px;letter-spacing:-1px}.admin-stat span{display:block;color:var(--muted);font-size:10px;text-transform:capitalize;margin-top:5px}.admin-table-wrap{padding:22px}.table-scroll{overflow:auto;margin-top:18px}table{border-collapse:collapse;width:100%;font-size:10px}th{text-align:left;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.8px;padding:10px 12px;border-bottom:1px solid var(--line)}td{padding:13px 12px;border-bottom:1px solid var(--line);vertical-align:top;white-space:nowrap}td:last-child{white-space:normal;max-width:320px;overflow-wrap:anywhere}td code{font-size:10px}
@media(max-width:680px){.auth-grid{grid-template-columns:1fr;margin-top:32px}.auth-card,.account-panel{padding:20px}.admin-page{padding:48px 8px 60px}.admin-stats{grid-template-columns:1fr 1fr;margin-top:32px}.admin-table-wrap{padding:15px}.admin-table-head{align-items:center}}
.composer-page{max-width:1400px;margin:0 auto;padding:72px 5vw 120px}.composer-grid{display:grid;grid-template-columns:minmax(280px,360px) 1fr;gap:32px;margin-top:48px}.composer-controls{display:grid;gap:18px;align-content:start}.upload-drop{display:grid;gap:6px;padding:24px;border:1px dashed var(--line);border-radius:16px;background:var(--surface);cursor:pointer}.upload-drop span,.muted{color:var(--muted);font-size:.9rem}.stage-wrap{position:relative;min-height:480px;display:grid;place-items:center;overflow:hidden;border-radius:20px;background:repeating-conic-gradient(#eef0ee 0 25%,#fff 0 50%) 50%/24px 24px}.stage-wrap canvas{display:block;max-width:100%;max-height:760px;object-fit:contain}.stage-toolbar{display:flex;justify-content:space-between;margin-bottom:12px;color:var(--muted);font-size:.9rem}.stage-empty{position:absolute;text-align:center;color:var(--ink);font-weight:650}.stage-empty span{color:var(--muted);font-weight:400}.composer-stage{min-width:0}.composer-stage .stage-wrap #stage-empty{position:absolute}.composer-stage #qr-box{position:absolute;border:2px solid var(--accent);box-sizing:border-box;touch-action:none}.composer-stage #qr-drag{position:absolute;inset:0;border:0;background:transparent;cursor:move}.composer-stage #qr-handle{position:absolute;right:-8px;bottom:-8px;width:16px;height:16px;border-radius:50%;background:var(--accent);border:3px solid white;cursor:nwse-resize}.text-button{background:none;border:0;color:var(--ink);text-decoration:underline;cursor:pointer}.recovery-card{max-width:560px;margin-top:24px}@media(max-width:850px){.composer-grid{grid-template-columns:1fr}.composer-page{padding-top:40px}.stage-wrap{min-height:360px}}
.artwork-drop{transition:border-color .2s,background .2s}.artwork-drop.is-dragging{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent)}.artwork-preview{display:flex;align-items:center;gap:12px;padding:10px 0;color:var(--muted);font-size:.85rem}.artwork-preview img{width:56px;height:42px;object-fit:cover;border-radius:6px;border:1px solid var(--line)}
.artwork-final{max-width:1400px;margin:56px auto 0;padding:0 5vw 72px}.artwork-final-head{display:flex;justify-content:space-between;gap:24px;align-items:start;margin-bottom:20px}.artwork-final-head h2{margin:.35rem 0;font-size:clamp(1.8rem,3vw,3rem)}.artwork-final-head p{color:var(--muted);max-width:58ch}.artwork-final-stage{position:relative;overflow:hidden;display:grid;place-items:center;min-height:360px;border:1px solid var(--line);border-radius:18px;background:var(--soft)}#artwork-final-image{display:block;width:100%;height:auto;max-height:850px;object-fit:contain}#artwork-final-qr{position:absolute;transform:translate(-50%,-50%);line-height:0;max-width:90%;max-height:90%;filter:drop-shadow(0 10px 18px #0004)}#artwork-final-qr svg{display:block;width:100%;height:100%}@media(max-width:700px){.artwork-final-head{display:block}.artwork-final-head button{margin-top:12px}}
/* Keep the composition QR bounded to the artwork stage, never the page. */
#artwork-final-stage{position:relative;isolation:isolate}#artwork-final-qr{width:28%;height:auto;aspect-ratio:1/1;max-width:70%;max-height:none;overflow:hidden}#artwork-final-qr svg{width:100%!important;height:100%!important;max-width:none;display:block}
#artwork-final-qr{cursor:move;touch-action:none}#artwork-final-handle{position:absolute;right:-7px;bottom:-7px;width:15px;height:15px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 2px 8px #0004;cursor:nwse-resize;touch-action:none}
.art-handle{position:absolute;width:18px;height:18px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 2px 8px #0005;z-index:3;touch-action:none}.art-handle.nw{left:-9px;top:-9px;cursor:nwse-resize}.art-handle.ne{right:-9px;top:-9px;cursor:nesw-resize}.art-handle.sw{left:-9px;bottom:-9px;cursor:nesw-resize}.art-handle.se{right:-9px;bottom:-9px;cursor:nwse-resize}
#download-composition{margin-top:16px;width:100%}

/* QR Pattern: a distinct editorial identity on the shared QR studio. */
:root[data-site="qrpattern"] {
  --bg: #f1ede3;
  --surface: #fffdf7;
  --ink: #18313d;
  --muted: #5f7174;
  --line: #cbd8d5;
  --soft: #e8f0ec;
  --accent: #126e76;
  --button-ink: #fffdf7;
  --accent-soft: #d6eeea;
  --grid: #b9d3cd;
  --shadow: 0 22px 60px #193b3a14;
}
:root[data-site="qrpattern"][data-theme="dark"] {
  --bg: #121e26;
  --surface: #1c2c34;
  --ink: #f2f3e9;
  --muted: #a8bdbb;
  --line: #426067;
  --soft: #233a40;
  --accent: #91d9cb;
  --button-ink: #142b31;
  --accent-soft: #28514f;
  --grid: #45646a;
  --shadow: 0 22px 60px #0003;
}
:root[data-site="qrpattern"] body {
  background-image: radial-gradient(circle at 85% 4%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 34rem);
}
:root[data-site="qrpattern"] .site-header {
  background: #18313d;
  color: #f7f4e9;
  border: 0;
  border-bottom: 5px solid #76bbb1;
  max-width: none;
  padding-inline: max(32px, calc((100vw - 1200px) / 2));
}
:root[data-site="qrpattern"] .site-header .brand {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  letter-spacing: -1.9px;
  font-size: 32px;
}
:root[data-site="qrpattern"] .site-header .brand-mark {
  border-radius: 2px;
  background: transparent;
  transform: rotate(-8deg);
}
:root[data-site="qrpattern"] .site-header .brand-mark img {
  filter: none;
  width: 34px;
}
:root[data-site="qrpattern"] .site-header .brand-period {
  color: #76bbb1;
}
:root[data-site="qrpattern"] .site-header .brand-expansion {
  color: #9be4d8;
}
:root[data-site="qrpattern"] .site-header nav a:hover,
:root[data-site="qrpattern"] .site-header nav button:hover,
:root[data-site="qrpattern"] .site-header .nav-active {
  color: #9be4d8;
}
:root[data-site="qrpattern"] .site-header .icon-button {
  background: #e5f0eb;
  border-color: #e5f0eb;
}
:root[data-site="qrpattern"] .site-header .icon-button .icon {
  filter: none;
}
:root[data-site="qrpattern"] .site-header #saved-open span {
  background: #30535a;
  border-color: #537378;
  color: #f7f4e9;
}
:root[data-site="qrpattern"] .site-header #saved-open {
  color: #f7f4e9;
}
:root[data-site="qrpattern"] .site-header #saved-open .icon {
  filter: brightness(0) invert(1);
}
:root[data-site="qrpattern"] main {
  max-width: 1220px;
}
:root[data-site="qrpattern"] .intro {
  position: relative;
  min-height: 340px;
  text-align: left;
  padding: 57px 0 43px;
  overflow: hidden;
  isolation: isolate;
}
:root[data-site="qrpattern"] .intro-tag {
  letter-spacing: 2px;
  font-size: 10px;
  color: var(--accent);
  margin-bottom: 22px;
}
:root[data-site="qrpattern"] .intro-tag span {
  border-radius: 0;
  background: var(--accent);
  width: 18px;
  height: 3px;
}
:root[data-site="qrpattern"] .intro h1,
:root[data-site="qrpattern"] .legal-page h1,
:root[data-site="qrpattern"] .admin-page h1,
:root[data-site="qrpattern"] .composer-page h1 {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  letter-spacing: -3.6px;
}
:root[data-site="qrpattern"] .intro h1 {
  font-size: clamp(56px, 6.4vw, 89px);
  line-height: .98;
  max-width: 780px;
}
:root[data-site="qrpattern"] .intro h1 br {
  display: block;
}
:root[data-site="qrpattern"] .intro p {
  font-size: 15px;
  line-height: 1.65;
  max-width: 52ch;
  margin-top: 25px;
}
:root[data-site="qrpattern"] .pattern-art {
  position: absolute;
  z-index: -1;
  right: 16px;
  top: 18px;
  width: clamp(220px, 25vw, 294px);
  aspect-ratio: 1;
  border: 14px solid var(--surface);
  background: var(--accent-soft) radial-gradient(var(--accent) 2.8px, transparent 3.2px) 0 0 / 18px 18px;
  box-shadow: 16px 18px 0 color-mix(in srgb, var(--accent) 19%, transparent);
  transform: rotate(9deg);
}
:root[data-site="qrpattern"] .pattern-art span {
  position: absolute;
  width: 65px;
  height: 65px;
  border: 11px solid var(--ink);
  background: var(--surface);
}
:root[data-site="qrpattern"] .pattern-art span::after {
  content: '';
  position: absolute;
  inset: 8px;
  background: var(--ink);
}
:root[data-site="qrpattern"] .pattern-art span:nth-child(1) { left: 12px; top: 12px; }
:root[data-site="qrpattern"] .pattern-art span:nth-child(2) { right: 12px; top: 12px; }
:root[data-site="qrpattern"] .pattern-art span:nth-child(3) { left: 12px; bottom: 12px; }
:root[data-site="qrpattern"] .studio {
  grid-template-columns: .92fr 1.12fr;
  border-radius: 2px;
  border-color: var(--ink);
  box-shadow: var(--shadow);
}
:root[data-site="qrpattern"] .preview-panel {
  order: -1;
  border-left: 0;
  border-right: 1px solid var(--line);
  background: var(--soft);
  padding: 30px;
}
:root[data-site="qrpattern"] .editor {
  padding: 32px;
}
:root[data-site="qrpattern"] .editor-heading h2,
:root[data-site="qrpattern"] .guide h2,
:root[data-site="qrpattern"] .faq h2 {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  letter-spacing: -1.1px;
}
:root[data-site="qrpattern"] .eyebrow,
:root[data-site="qrpattern"] .preview-top {
  letter-spacing: 1.8px;
}
:root[data-site="qrpattern"] .preview-canvas {
  border-radius: 2px;
  border-color: var(--ink);
  background-color: var(--surface);
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 20px 20px;
  min-height: 340px;
}
:root[data-site="qrpattern"] .type-button,
:root[data-site="qrpattern"] .icon-button,
:root[data-site="qrpattern"] .small-button,
:root[data-site="qrpattern"] .download-button,
:root[data-site="qrpattern"] input:not([type="checkbox"]):not([type="range"]):not([type="color"]),
:root[data-site="qrpattern"] select,
:root[data-site="qrpattern"] textarea {
  border-radius: 3px;
}
:root[data-site="qrpattern"] .type-button.selected {
  box-shadow: inset 0 0 0 1px var(--accent);
}
:root[data-site="qrpattern"] .download-button:hover:not(:disabled) {
  transform: translateY(-2px);
}
:root[data-site="qrpattern"] .bottom-strip {
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  text-transform: uppercase;
  letter-spacing: 1px;
}
:root[data-site="qrpattern"] .guide {
  grid-template-columns: 1.15fr .85fr;
  gap: 100px;
}
:root[data-site="qrpattern"] .guide li > span {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 24px;
  line-height: 1;
}
:root[data-site="qrpattern"] .faq {
  border-top: 2px solid var(--ink);
}
:root[data-site="qrpattern"] footer .brand {
  font-family: Georgia, 'Times New Roman', serif;
  letter-spacing: -1px;
}
:root[data-site="qrpattern"] .legal-grid section,
:root[data-site="qrpattern"] .auth-card,
:root[data-site="qrpattern"] .account-panel,
:root[data-site="qrpattern"] .admin-table-wrap,
:root[data-site="qrpattern"] .admin-stat,
:root[data-site="qrpattern"] .upload-drop,
:root[data-site="qrpattern"] .resolution-control,
:root[data-site="qrpattern"] .stage-wrap {
  border-radius: 3px;
}
@media (max-width: 850px) {
  :root[data-site="qrpattern"] .intro { min-height: 300px; }
  :root[data-site="qrpattern"] .pattern-art { right: 0; width: 215px; opacity: .48; }
  :root[data-site="qrpattern"] .studio { grid-template-columns: .9fr 1.1fr; }
  :root[data-site="qrpattern"] .editor,
  :root[data-site="qrpattern"] .preview-panel { padding: 22px; }
}
@media (max-width: 680px) {
  :root[data-site="qrpattern"] .site-header { padding: 16px; }
  :root[data-site="qrpattern"] .site-header .brand { font-size: 26px; }
  :root[data-site="qrpattern"] .intro { min-height: 0; padding: 40px 0 35px; }
  :root[data-site="qrpattern"] .intro h1 { font-size: clamp(46px, 13vw, 64px); letter-spacing: -2.5px; }
  :root[data-site="qrpattern"] .intro p { max-width: 38ch; font-size: 13px; }
  :root[data-site="qrpattern"] .pattern-art { width: 130px; opacity: .24; top: 47px; right: 4px; border-width: 6px; }
  :root[data-site="qrpattern"] .pattern-art span { width: 28px; height: 28px; border-width: 5px; }
  :root[data-site="qrpattern"] .pattern-art span::after { inset: 3px; }
  :root[data-site="qrpattern"] .pattern-art span:nth-child(1) { left: 5px; top: 5px; }
  :root[data-site="qrpattern"] .pattern-art span:nth-child(2) { right: 5px; top: 5px; }
  :root[data-site="qrpattern"] .pattern-art span:nth-child(3) { left: 5px; bottom: 5px; }
  :root[data-site="qrpattern"] .studio { grid-template-columns: 1fr; }
  :root[data-site="qrpattern"] .preview-panel { order: 0; border-right: 0; border-top: 1px solid var(--line); }
  :root[data-site="qrpattern"] .preview-canvas { min-height: 290px; grid-template-columns: minmax(0, 1fr); }
  :root[data-site="qrpattern"] #qr-preview { width: min(100%, 285px); }
  :root[data-site="qrpattern"] .bottom-strip { justify-content: center; }
  :root[data-site="qrpattern"] .guide { grid-template-columns: 1fr; gap: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  :root[data-site="qrpattern"] .download-button:hover:not(:disabled) { transform: none; }
}
@media (max-width: 350px) {
  .site-header {
    flex-wrap: wrap;
    row-gap: 12px;
  }
  .site-header .brand {
    flex-basis: 100%;
  }
  .site-header nav {
    margin-left: auto;
  }
}