.guide-lab[data-guide-lab] {
  --gl-ink: #143043;
  --gl-blue: #0786cc;
  --gl-line: #d4e4ee;
  color: var(--gl-ink);
  font-family: Nunito, Arial, sans-serif;
  background: #fff;
  border: 1px solid #ccdfeb;
  border-top: 4px solid #20a0ed;
  border-radius: 14px;
  margin: 36px 0;
  padding: 28px;
  /* The page already reserves 110px for its sticky navigation. */
  scroll-margin-top: 20px;
  container: guide-lab / inline-size;
}
.article-branded .article > section.guide-lab { max-width: none; }
.guide-lab *, .guide-lab *::before, .guide-lab *::after { box-sizing: border-box; }
.guide-lab [hidden] { display: none !important; }
.guide-lab :is(input, textarea, select, button) { font: inherit; }
.guide-lab :is(input, textarea, select, button):focus-visible { outline: 3px solid #197fbd; outline-offset: 3px; }
.guide-lab .gl-header { margin-bottom: 25px; padding-bottom: 22px; border-bottom: 1px solid #d9e5ed; }
.guide-lab[data-guide-lab] .gl-eyebrow { margin: 0 0 8px; font-size: 11px; font-weight: 900; line-height: 1.5; letter-spacing: .09em; color: var(--gl-blue); }
.guide-lab .gl-header h2 { margin: 0 0 12px; font-family: 'Baloo 2', Nunito, sans-serif; font-size: 32px; line-height: 1.13; letter-spacing: -.02em; color: var(--gl-ink); }
.guide-lab[data-guide-lab] .gl-intro { margin: 0; max-width: 65ch; font-size: 16px; line-height: 1.65; color: #476273; }
.guide-lab .gl-inbox-grid, .guide-lab .gl-cta-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: start; }
.guide-lab .gl-controls { border: 0; padding: 0; margin: 0; min-width: 0; }
.guide-lab .gl-controls > label, .guide-lab .gl-review-notes > label, .guide-lab .gl-export > label { display: block; font-size: 14px; font-weight: 850; line-height: 1.5; margin: 17px 0 7px; color: #24485e; }
.guide-lab .gl-controls > label:first-of-type, .guide-lab .gl-review-notes > label:first-of-type { margin-top: 0; }
.guide-lab .gl-controls :is(input[type='text'], textarea, select), .guide-lab .gl-export textarea { width: 100%; min-width: 0; border: 1px solid #bed5e4; background: #fff; border-radius: 7px; padding: 11px 12px; font-size: 15px; line-height: 1.5; color: #1d3a4e; box-shadow: 0 1px 2px #17344404; }
.guide-lab .gl-controls textarea, .guide-lab .gl-export textarea { resize: vertical; }
.guide-lab .gl-controls :is(input, textarea)::placeholder { color: #6f8796; opacity: 1; }
.guide-lab .gl-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 20px; }
.guide-lab .gl-actions button { min-height: 44px; font-size: 14px; font-weight: 900; line-height: 1.35; cursor: pointer; }
.guide-lab .gl-primary { padding: 11px 16px; border: 1px solid #36b648; border-radius: 8px; background: #51d65e; color: #123e1d; box-shadow: 0 3px 0 #2a9d39; }
.guide-lab .gl-primary:hover { background: #63df6f; }
.guide-lab .gl-primary:active { box-shadow: 0 1px 0 #2a9d39; transform: translateY(2px); }
.guide-lab .gl-secondary { padding: 11px 16px; border: 1px solid #b9d2e2; border-radius: 8px; background: #fff; color: #236181; }
.guide-lab .gl-secondary:hover { border-color: #4eaddd; }
.guide-lab .gl-text-button { padding: 7px 2px; border: 0; background: transparent; color: #246f95; text-decoration: underline; text-underline-offset: 4px; }
.guide-lab[data-guide-lab] .gl-note { font-size: 13px; line-height: 1.65; color: #546f80; margin: 15px 0 0; }
.guide-lab[data-guide-lab] .gl-status { font-size: 13px; line-height: 1.5; color: #267046; margin: 14px 0 0; }
.guide-lab .gl-status:empty { margin: 0; }
.guide-lab .gl-export { margin-top: 20px; }
.guide-lab .gl-export > label { margin-top: 0; }
.guide-lab .gl-export textarea { min-height: 140px; font-size: 14px; }
.guide-lab .gl-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* The inbox changes width, not a made-up grade or a fixed character rule. */
.guide-lab .gl-preview-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin: 0 0 15px; }
.guide-lab .gl-preview-heading > strong { font-size: 13px; }
.guide-lab .gl-size-controls { border: 0; margin: 0; padding: 3px; display: flex; background: #e0edf5; border-radius: 7px; }
.guide-lab .gl-size-controls button { cursor: pointer; border: 0; border-radius: 5px; background: transparent; min-height: 35px; padding: 7px 10px; color: #4c6c80; font-size: 12px; font-weight: 800; }
.guide-lab .gl-size-controls button[aria-pressed='true'] { color: #135776; background: #fff; box-shadow: 0 1px 3px #23476315; }
.guide-lab .gl-inbox-stage { display: flex; justify-content: center; align-items: start; min-height: 0; padding: 10px 0 16px; }
.guide-lab .gl-inbox-window { width: 100%; min-width: 0; border: 1px solid #c5d8e5; border-radius: 12px; background: #fff; box-shadow: 0 6px 0 #deebf4, 0 12px 24px #1c4c6808; overflow: hidden; transition: width .18s ease; }
.guide-lab .gl-inbox-window[data-inbox-window='narrow'] { width: min(100%, 310px); }
.guide-lab .gl-inbox-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid #e1ebf1; padding: 13px; font-size: 14px; font-weight: 900; }
.guide-lab .gl-inbox-bar > span:last-child { font-size: 11px; color: #6d8392; font-weight: 700; }
.guide-lab .gl-inbox-row { display: flex; gap: 10px; padding: 19px 13px; }
.guide-lab .gl-inbox-avatar { display: grid; place-items: center; flex: 0 0 28px; height: 30px; border-radius: 8px; background: #e2f2db; color: #42633b; font-size: 15px; font-weight: 900; }
.guide-lab .gl-inbox-lines { flex: 1; min-width: 0; }
.guide-lab .gl-inbox-sender { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 7px; font-size: 13px; }
.guide-lab .gl-inbox-sender > span { font-size: 10px; color: #6f8797; }
.guide-lab .gl-inbox-subject { display: block; font-size: 15px; line-height: 1.45; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.guide-lab .gl-inbox-preview { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 14px; line-height: 1.5; color: #5c7484; margin-top: 4px; overflow-wrap: anywhere; }
.guide-lab .gl-inbox-window[data-inbox-window='wide'] .gl-inbox-preview { -webkit-line-clamp: 1; }
.guide-lab[data-guide-lab] .gl-inbox-store { border-top: 1px solid #edf2f5; padding: 10px 13px; font-size: 10px; line-height: 1.5; color: #758a98; margin: 0; }
.guide-lab [data-empty='true'] { font-style: italic; color: #718793; }

/* A button is useful only when its destination keeps the same promise. */
.guide-lab .gl-goal-controls { margin-bottom: 25px; }
.guide-lab .gl-goal-controls > legend { padding: 0; font-size: 14px; font-weight: 900; margin-bottom: 10px; }
.guide-lab .gl-goals { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.guide-lab .gl-goal { display: flex; align-items: center; gap: 8px; cursor: pointer; margin: 0; border: 1px solid #c2d8e6; background: #fff; color: #416579; border-radius: 8px; padding: 13px 10px; font-size: 13px; line-height: 1.4; font-weight: 850; }
.guide-lab .gl-goal input { flex: 0 0 16px; width: 16px; height: 16px; min-height: 0; margin: 0; accent-color: #0c90d1; }
.guide-lab .gl-goal:has(input:checked) { background: #e2f3ff; border-color: #69b8e2; color: #145c87; }
.guide-lab .gl-link-target { border-left: 3px solid #29a0df; padding-left: 14px; margin: 20px 0; }
.guide-lab .gl-link-target > span { font-size: 12px; font-weight: 800; color: #5f7e90; }
.guide-lab .gl-link-target > strong { display: block; margin-top: 5px; font-size: 17px; line-height: 1.4; color: #204c68; }
.guide-lab[data-guide-lab] .gl-link-target .gl-note { margin-top: 8px; }
.guide-lab .gl-optional { color: #6a8291; font-weight: 600; }
.guide-lab[data-guide-lab] .gl-preview-label { color: #597887; font-size: 10px; letter-spacing: .07em; font-weight: 900; margin: 0 0 11px; }
.guide-lab .gl-email-card { border: 1px solid #e1e4d7; border-radius: 10px; background: #fffef9; padding: 24px; box-shadow: 0 4px 0 #e4eadd; }
.guide-lab .gl-email-brand { color: #546044; display: block; font-family: Georgia, serif; font-size: 27px; margin: 0 0 28px; }
.guide-lab[data-guide-lab] .gl-email-card h3 { font-family: Georgia, serif; font-size: 27px; font-weight: 500; line-height: 1.18; letter-spacing: -.02em; color: #2e4337; margin: 0 0 15px; }
.guide-lab[data-guide-lab] .gl-email-body { font-family: Arial, sans-serif; font-size: 14px; color: #61705b; line-height: 1.7; margin: 0 0 24px; }
.guide-lab .gl-email-button { display: inline-flex; justify-content: center; max-width: 100%; min-height: 46px; border: 1px solid #304b2c; border-radius: 5px; padding: 12px 15px; background: #405a39; color: #fff; font: 700 15px/1.5 Arial, sans-serif; overflow-wrap: anywhere; cursor: pointer; }
.guide-lab .gl-email-button:hover { background: #304b2c; }
.guide-lab .gl-email-button:disabled { cursor: default; }

/* The result is a working surface, with the original close by for comparison. */
.guide-lab .gl-inbox-demo, .guide-lab .gl-cta-demo { min-width: 0; padding: 20px; border: 1px solid #dce6ed; border-radius: 10px; background: #f3f7fa; scroll-margin-top: 24px; }
.guide-lab .gl-original { border: 0; border-top: 1px solid #d7e3eb; margin: 4px 0 0; padding: 0; }
.guide-lab .gl-original summary { padding: 14px 0 4px; color: #31566b; font-size: 13px; font-weight: 800; cursor: pointer; }
.guide-lab .gl-original > div { padding: 13px 0 0; }
.guide-lab .gl-original strong { display: block; font-size: 14px; line-height: 1.45; color: #243f50; }
.guide-lab .gl-original p { font-size: 14px; line-height: 1.55; margin: 6px 0 0; color: #536e7f; }
.guide-lab .gl-preview-jump { display: none; min-height: 44px; align-items: center; color: #1478ac; font-size: 14px; font-weight: 800; }
.guide-lab .gl-destination { position: relative; padding: 20px; margin-top: 28px; border: 1px solid #b8d9c6; border-radius: 9px; background: #fff; scroll-margin-top: 24px; animation: gl-destination-in 220ms ease-out; }
.guide-lab .gl-destination::before { content: '↓'; position: absolute; top: -27px; left: 22px; color: #529365; font-size: 20px; font-weight: 800; }
.guide-lab[data-guide-lab] .gl-destination-label { margin: 0 0 9px; color: #387247; font-size: 10px; line-height: 1.4; letter-spacing: .06em; font-weight: 900; }
.guide-lab .gl-destination-address { display: block; color: #617784; font-size: 12px; line-height: 1.5; overflow-wrap: anywhere; }
.guide-lab .gl-destination h3 { margin: 15px 0 9px; font: 900 22px/1.2 Nunito,Arial,sans-serif; color: #1f4430; }
.guide-lab .gl-destination p:not(.gl-destination-label) { margin: 0 0 17px; color: #3b5948; font-size: 15px; line-height: 1.5; }
.guide-lab .gl-destination-check { display: block; border-top: 1px solid #deebe3; padding-top: 13px; color: #4d6d59; font-size: 13px; line-height: 1.5; }
@keyframes gl-destination-in { from { opacity: .6; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

/* A checklist records the reader's work; reaching the end is not a verdict. */
.guide-lab .gl-progress-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.guide-lab .gl-progress-heading > strong { font-size: 15px; color: #28566f; }
.guide-lab .gl-progress-heading > span { font-size: 12px; color: #667f8e; }
.guide-lab .gl-review-progress { display: block; width: 100%; height: 7px; margin: 12px 0 26px; border: 0; border-radius: 7px; appearance: none; overflow: hidden; background: #dce9f2; color: #179de0; }
.guide-lab .gl-review-progress::-webkit-progress-bar { background: #dce9f2; }
.guide-lab .gl-review-progress::-webkit-progress-value { background: #179de0; border-radius: 7px; }
.guide-lab .gl-review-progress::-moz-progress-bar { background: #179de0; border-radius: 7px; }
.guide-lab .gl-check-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 24px; row-gap: 26px; }
.guide-lab .gl-check-group { border: 0; padding: 0; margin: 0; min-width: 0; }
.guide-lab .gl-check-group > legend { padding: 0; font-size: 17px; font-weight: 900; margin-bottom: 11px; color: #254b60; }
.guide-lab .gl-check { display: flex; align-items: flex-start; gap: 10px; margin: 0; padding: 12px 0; border-top: 1px solid #d8e5ed; font-size: 14px; line-height: 1.6; color: #476577; cursor: pointer; }
.guide-lab .gl-check input { width: 18px; height: 18px; min-height: 0; margin: 2px 0 0; flex: 0 0 18px; accent-color: #208e53; }
.guide-lab .gl-check:has(input:checked) { color: #2e6c49; }
.guide-lab .gl-review-notes { margin-top: 28px; padding-top: 24px; border-top: 1px solid #c9dee9; }
.guide-lab[data-guide-lab] .gl-save-note { max-width: 65ch; margin-top: 21px; }

@media (max-width: 900px) {
  .guide-lab .gl-inbox-grid, .guide-lab .gl-cta-grid { gap: 23px; }
  .guide-lab .gl-inbox-avatar { display: none; }
}
@media (max-width: 700px) {
  .guide-lab[data-guide-lab] { padding: 23px 20px; }
  .guide-lab .gl-inbox-grid, .guide-lab .gl-cta-grid { grid-template-columns: 1fr; gap: 28px; }
  .guide-lab .gl-inbox-demo, .guide-lab .gl-cta-demo { border-top: 1px solid #cbdfe9; padding-top: 22px; }
  .guide-lab .gl-inbox-stage { min-height: 0; padding: 6px 0 12px; }
  .guide-lab .gl-inbox-avatar { display: grid; }
  .guide-lab .gl-inbox-window { max-width: 470px; }
  .guide-lab .gl-check-groups { grid-template-columns: 1fr; row-gap: 23px; }
  .guide-lab .gl-header h2 { font-size: 29px; }
  .guide-lab .gl-goals { grid-template-columns: 1fr; }
  .guide-lab .gl-goal { font-size: 14px; padding: 12px; }
  .guide-lab .gl-email-card { padding: 23px; }
  .guide-lab .gl-preview-jump { display: inline-flex; }
}
@container guide-lab (max-width: 650px) {
  .guide-lab .gl-inbox-grid, .guide-lab .gl-cta-grid { grid-template-columns: 1fr; gap: 28px; }
  .guide-lab .gl-inbox-demo, .guide-lab .gl-cta-demo { border-top: 1px solid #cbdfe9; padding-top: 22px; }
  .guide-lab .gl-inbox-stage { min-height: 0; padding: 6px 0 12px; }
  .guide-lab .gl-inbox-avatar { display: grid; }
  .guide-lab .gl-inbox-window { max-width: 470px; }
  .guide-lab .gl-check-groups { grid-template-columns: 1fr; row-gap: 23px; }
  .guide-lab .gl-goals { grid-template-columns: 1fr; }
  .guide-lab .gl-preview-jump { display: inline-flex; }
}
@media (prefers-reduced-motion: reduce) {
  .guide-lab *, .guide-lab *::before, .guide-lab *::after { transition: none !important; animation: none !important; }
}