html {
  scrollbar-gutter: stable;
}
.source-frame {
  margin-left: 232px;
  min-width: 0;
}
.qr-layout {
  max-width: 820px;
  margin: 24px auto 0;
}
#qr-list {
  min-height: 100px;
  max-height: min(52dvh, 560px);
  overflow: auto;
  overscroll-behavior: contain;
}
#qr-list button {
  display: block;
  width: 100%;
  text-align: left;
  margin: 4px 0;
  border-color: transparent;
  font-size: 12px;
}
#qr-list button span {
  display: inline-block;
  margin-right: 8px;
  color: var(--muted);
  font-size: 11px;
}
#qr-list button[aria-current="true"] {
  background: var(--accent-subtle);
  border-color: var(--line);
}
.qr-result-note {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}
.qr-original-recovery {
  border-left: 2px solid var(--study-warning-text);
  padding: 12px;
  background: var(--study-warning-bg);
  font-size: 13px;
  line-height: 1.6;
}
.qr-case {
  min-width: 0;
}
#qr-stem {
  scroll-margin-top: 85px;
  font-size: 19px;
  line-height: 1.65;
  font-weight: 500;
  letter-spacing: -0.015em;
}
.qr-option {
  display: flex;
  align-items: stretch;
  gap: 6px;
  margin: 9px 0;
}
.qr-option button:first-child {
  flex: 1;
  min-width: 0;
  text-align: left;
  line-height: 1.55;
  padding: 13px 15px;
}
.qr-option button:last-child {
  width: 38px;
  flex-shrink: 0;
  color: var(--muted);
}
.qr-option.is-excluded button:first-child {
  text-decoration: line-through;
  color: var(--muted);
}
#qr-feedback {
  background: var(--soft);
  border-left: 2px solid var(--accent);
  padding: 16px;
  margin: 14px 0;
  line-height: 1.6;
  font-size: 14px;
}
#qr-tutor p {
  overflow-wrap: anywhere;
}
#qr-tutor input,
#qr-tutor textarea,
#qr-note {
  width: 100%;
  box-sizing: border-box;
}
#qr-message,
#qr-note {
  min-height: 110px;
  resize: vertical;
}
#qr-conversation {
  min-height: 60px;
}
.qr-turn {
  font-size: 14px;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}
.qr-turn p {
  white-space: pre-wrap;
}
#qr-root details {
  margin: 16px 0;
}
#qr-root details label {
  display: block;
  margin: 12px 0 6px;
}
#qr-root :is(h2, button, p) {
  overflow-wrap: anywhere;
}
@media (max-width: 760px) {
  .qr-layout {
    margin-top: 12px;
  }
  #qr-stem {
    font-size: 17px;
  }
}
.source-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  border-bottom: 1px solid var(--line);
  padding: 10px 24px;
}
.source-topbar a {
  margin-left: auto;
}
#sb-open {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  min-height: 36px;
  padding: 7px 12px;
  cursor: pointer;
}
.sb-dialog {
  font-size: 13px;
  line-height: 1.6;
}
.sb-downloads {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  border-block: 1px solid var(--line);
  padding-block: 16px;
  margin-block: 16px;
}
.sb-downloads p {
  color: var(--muted);
  margin-block: 6px 12px;
}
.sb-downloads button {
  margin: 4px 4px 4px 0;
}
.sb-downloads .sb-current {
  color: var(--ink);
  font-size: 12px;
  padding-left: 10px;
  border-left: 2px solid var(--line);
}
.sb-import h3 {
  font-size: 13px;
  font-weight: 500;
  margin: 12px 0 8px;
}
#sb-file-name {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
  overflow-wrap: anywhere;
}
#sb-choose {
  min-height: 40px;
}
#sb-preview {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
#sb-legacy-row {
  display: block;
  margin-bottom: 16px;
}
#sb-legacy-row[hidden] {
  display: none;
}
#sb-apply {
  background: var(--accent);
  color: var(--on-accent);
}
@media (max-width: 540px) {
  .sb-downloads {
    grid-template-columns: 1fr;
  }
}
.source-main {
  max-width: 1340px;
  margin: auto;
  padding: 28px;
}
.source-main h1 {
  font-size: 25px;
  letter-spacing: -0.035em;
  margin: 0 0 8px;
}
.source-intro {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  position: relative;
}
.source-info {
  font-size: 12px;
  color: var(--muted);
}
.source-info summary {
  cursor: pointer;
  padding: 10px 0;
  min-height: 38px;
}
.source-info > div {
  position: absolute;
  inset: 100% 0 auto auto;
  width: min(480px, 100%);
  z-index: 30;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
  box-shadow: 0 12px 36px rgb(0 0 0 / 14%);
  line-height: 1.65;
}
.qr-workbar {
  border-block: 1px solid var(--line);
  font-size: 12px;
}
.qr-view-switch {
  display: flex;
  gap: 4px;
  padding: 3px;
  background: var(--soft);
  border-radius: 8px;
}
.qr-workbar #qr-save {
  margin-left: auto;
  font-size: 12px;
}
.qr-workbar #qr-save[data-state="error"] {
  flex-basis: 100%;
  border-left: 2px solid var(--study-error-border);
  padding: 8px;
  color: var(--study-error-text);
}
.qr-case-head #qr-position {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
}
.source-main .qr-case-head button {
  font-size: 12px;
}
.qr-case-actions {
  position: sticky;
  bottom: 0;
  display: flex;
  justify-content: space-between;
  gap: 8px 16px;
  background: var(--white);
  border-top: 1px solid var(--line);
  padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
  z-index: 10;
}
.qr-case-actions .source-tools {
  padding: 0;
  font-size: 12px;
}
.source-main #qr-reveal,
.source-main #qr-send {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}
.qr-dialog {
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: 12px;
  width: min(660px, calc(100vw - 32px));
  max-width: none;
  max-height: calc(100dvh - 32px);
  box-sizing: border-box;
  box-shadow: 0 24px 90px rgb(0 0 0 / 28%);
  overscroll-behavior: contain;
}
.qr-dialog::backdrop {
  background: rgb(0 0 0 / 35%);
}
.qr-overlay-open,
.sb-overlay-open {
  overflow: hidden;
}
.qr-dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.qr-dialog-head h2 {
  font-size: 16px;
  margin: 0;
}
.source-main .qr-dialog-head button {
  font-size: 12px;
  flex-shrink: 0;
}
.qr-dialog summary {
  cursor: pointer;
  font-size: 13px;
  min-height: 36px;
  padding: 8px 0;
}
.qr-index-help {
  margin: 14px 0 0;
  font-size: 12px;
}
.qr-tutor-dialog {
  position: fixed;
  inset: 0 0 0 auto;
  margin: 0;
  width: min(430px, 100%);
  height: 100dvh;
  max-height: none;
  border-radius: 12px 0 0 12px;
  padding: 0;
}
.qr-tutor-dialog[open] {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
}
.qr-tutor-dialog .qr-dialog-head {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}
.qr-tutor-body {
  padding: 0 20px;
  overflow: auto;
  overscroll-behavior: contain;
}
.qr-tutor-case p {
  font-size: 13px;
  line-height: 1.65;
  white-space: pre-wrap;
}
#qr-form {
  padding: 12px 20px max(12px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
}
#qr-form label {
  font-size: 12px;
}
#qr-form textarea {
  margin-top: 6px;
  min-height: 70px;
  max-height: 25dvh;
  font-size: 14px;
}
#qr-form .source-tools {
  padding: 8px 0 0;
}
.qr-tutor-disclosure {
  margin: 0 0 10px;
  font-size: 11px;
  line-height: 1.5;
}
@media (max-width: 760px) {
  .source-intro h1 {
    font-size: 22px;
  }
  .source-main .qr-workbar {
    padding: 8px 0;
  }
  .qr-workbar #qr-save {
    margin-left: 0;
    flex-basis: 100%;
  }
  .qr-case-actions {
    flex-direction: column;
  }
  .qr-primary-actions,
  .qr-navigation-actions {
    justify-content: space-between;
  }
  .source-main .qr-case-actions button {
    min-height: 44px;
  }
  .qr-dialog {
    padding: 14px;
  }
  .qr-tutor-dialog {
    padding: 0;
    border-radius: 0;
  }
  .qr-tutor-dialog .qr-dialog-head,
  .qr-tutor-body,
  #qr-form {
    padding-inline: 14px;
  }
  .source-main .qr-dialog :is(input, select, textarea) {
    font-size: 16px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .qr-dialog[open] {
    animation: qr-appear 120ms ease-out;
  }
  @keyframes qr-appear {
    from {
      opacity: 0;
      transform: translateY(5px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}
.source-muted {
  color: var(--muted);
  font-size: 13px;
}
.source-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 14px 0;
}
.source-tools input[type="search"] {
  flex: 1;
  min-width: 140px;
}
.source-main :is(button, input, select, textarea) {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 11px;
  font: inherit;
  background: var(--white);
  color: var(--ink);
}
.source-main button {
  cursor: pointer;
  min-height: 38px;
}
.source-main button:hover {
  background: var(--soft);
}
.source-main button:disabled {
  opacity: 0.5;
  cursor: default;
}
.source-main button[aria-pressed="true"] {
  color: var(--accent-text);
  background: var(--accent-subtle);
  border-color: var(--accent);
}
.source-main :focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.source-main input[type="number"] {
  width: 75px;
}
.source-results {
  display: grid;
  gap: 7px;
  max-height: 260px;
  overflow: auto;
  margin-bottom: 16px;
}
.source-results button {
  text-align: left;
  white-space: normal;
  overflow-wrap: anywhere;
}
.source-spread {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 285px;
  gap: 24px;
  align-items: start;
}
.source-image-wrap {
  min-width: 0;
  overflow: auto;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}
#source-image {
  display: block;
  width: 100%;
  height: auto;
  background: white;
}
.source-image-wrap.is-zoomed #source-image {
  width: 1350px;
  max-width: none;
}
.source-aside {
  position: sticky;
  top: 15px;
  min-width: 0;
}
.source-aside textarea {
  width: 100%;
  min-height: 150px;
  resize: vertical;
  display: block;
  margin: 8px 0;
}
.source-aside details {
  border-top: 1px solid var(--line);
  margin-top: 18px;
  padding-top: 12px;
}
.source-aside summary {
  cursor: pointer;
}
#source-text {
  white-space: pre-wrap;
  font-size: 14px;
  max-height: 65vh;
  overflow: auto;
  overflow-wrap: anywhere;
  line-height: 1.65;
}
#source-message:not(:empty) {
  border-left: 3px solid var(--accent);
  padding: 10px 12px;
  background: var(--soft);
}
.source-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.source-footer {
  display: flex;
  justify-content: space-between;
  padding-top: 16px;
}
.source-key {
  font-size: 12px;
  color: var(--muted);
}
@media (max-width: 1050px) {
  .source-spread {
    grid-template-columns: minmax(0, 1fr);
  }
  .source-aside {
    position: static;
  }
}
@media (max-width: 760px) {
  .source-frame {
    margin-left: 0;
  }
  .source-main {
    padding: 18px 14px;
  }
  .source-topbar {
    padding: 8px 14px;
  }
  .source-key {
    display: none;
  }
  .source-tools {
    gap: 6px;
  }
}