.mistakes-article {
  --mistakes-ink: #0f172a;
  --mistakes-ink-soft: #1e293b;
  --mistakes-copy: #475569;
  --mistakes-muted: #64748b;
  --mistakes-orange: #f97316;
  --mistakes-orange-dark: #c2410c;
  --mistakes-blue: #2563eb;
  --mistakes-blue-dark: #1e40af;
  --mistakes-paper: #f5f1e8;
  --mistakes-paper-light: #fbf9f4;
  --mistakes-soft: #f8fafc;
  --mistakes-line: #dbe3ea;
  color: var(--mistakes-ink);
  background: #fff;
}

.mistakes-article a,
.mistakes-article summary {
  -webkit-tap-highlight-color: transparent;
}

.mistakes-article a:focus-visible,
.mistakes-article summary:focus-visible,
.mistakes-article [tabindex]:focus-visible {
  outline: 3px solid var(--mistakes-blue-dark);
  outline-offset: 4px;
  box-shadow: 0 0 0 7px rgba(255, 255, 255, .96);
}

.mistakes-wide {
  width: min(100% - 40px, 1180px);
  margin-inline: auto;
}

.mistakes-reading-progress {
  position: sticky;
  top: 80px;
  z-index: 40;
  height: 3px;
  pointer-events: none;
  background: rgba(226, 232, 240, .76);
}

.mistakes-reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--mistakes-orange), var(--mistakes-blue));
  transition: width .08s linear;
}

.mistakes-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 38px 0 74px;
  border-bottom: 1px solid #dad5cb;
  background: var(--mistakes-paper);
}

.mistakes-hero::before {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: .44;
  background-image:
    linear-gradient(rgba(15, 23, 42, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, .06) 1px, transparent 1px);
  background-size: 54px 54px;
  content: "";
  mask-image: linear-gradient(90deg, transparent, #000 40%, #000);
}

.mistakes-hero::after {
  position: absolute;
  top: 0;
  right: max(20px, calc((100vw - 1180px) / 2));
  z-index: -1;
  width: 152px;
  height: 5px;
  background: linear-gradient(90deg, var(--mistakes-orange) 0 54%, var(--mistakes-blue) 54%);
  content: "";
}

.mistakes-hero .insights-breadcrumb {
  margin-bottom: 38px;
  color: #6b7280;
}

.mistakes-hero .insights-breadcrumb a {
  color: var(--mistakes-orange-dark);
}

.mistakes-hero-grid {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, .9fr) minmax(430px, 1.1fr);
  gap: clamp(42px, 6vw, 82px);
}

.mistakes-hero-copy {
  position: relative;
  z-index: 1;
}

.mistakes-hero .insights-eyebrow {
  margin-bottom: 20px;
  color: var(--mistakes-orange-dark);
}

.mistakes-hero h1 {
  max-width: 680px;
  margin: 0;
  color: var(--mistakes-ink);
  font-size: clamp(42px, 4.7vw, 64px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -.047em;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.mistakes-hero .insights-article-deck {
  max-width: 620px;
  margin: 25px 0 0;
  color: var(--mistakes-copy);
  font-size: clamp(18px, 1.5vw, 21px);
  line-height: 1.65;
}

.mistakes-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 32px;
}

.mistakes-primary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid var(--mistakes-orange-dark);
  border-radius: 7px;
  color: #fff;
  background: var(--mistakes-orange-dark);
  box-shadow: 0 10px 24px rgba(194, 65, 12, .16);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
}

.mistakes-primary-action:hover {
  border-color: #9a3412;
  color: #fff;
  background: #9a3412;
  transform: translateY(-1px);
}

.mistakes-primary-action svg {
  flex: 0 0 auto;
}

.mistakes-read-action {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border-bottom: 1px solid #94a3b8;
  color: var(--mistakes-ink);
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}

.mistakes-read-action:hover {
  border-color: var(--mistakes-orange-dark);
  color: var(--mistakes-orange-dark);
}

.mistakes-hero .insights-button-secondary {
  min-height: 44px;
  padding: 9px 15px;
  border-color: rgba(15, 23, 42, .25);
  color: var(--mistakes-ink);
  background: rgba(255, 255, 255, .48);
  box-shadow: none;
}

.mistakes-hero-visual {
  position: relative;
  margin: 0;
  padding: 11px;
  border: 1px solid rgba(15, 23, 42, .22);
  background: rgba(255, 255, 255, .45);
  box-shadow: 0 24px 58px rgba(15, 23, 42, .16);
  animation: mistakes-reveal .8s cubic-bezier(.2, .7, .2, 1) both;
}

.mistakes-hero-visual::before,
.mistakes-hero-visual::after {
  position: absolute;
  z-index: 2;
  width: 52px;
  height: 52px;
  pointer-events: none;
  content: "";
}

.mistakes-hero-visual::before {
  top: -13px;
  right: -13px;
  border-top: 2px solid var(--mistakes-orange);
  border-right: 2px solid var(--mistakes-orange);
}

.mistakes-hero-visual::after {
  bottom: -13px;
  left: -13px;
  border-bottom: 2px solid var(--mistakes-blue);
  border-left: 2px solid var(--mistakes-blue);
}

.mistakes-hero-visual picture,
.mistakes-hero-visual img {
  display: block;
  width: 100%;
}

.mistakes-hero-visual img {
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.mistakes-article-body {
  padding: 82px 0 104px;
  overflow-x: clip;
  background: #fff;
}

.mistakes-body-grid {
  display: grid;
  grid-template-columns: 220px minmax(0, 780px);
  justify-content: center;
  gap: clamp(40px, 6vw, 80px);
}

.mistakes-reading-column {
  min-width: 0;
}

.mistakes-toc {
  position: sticky;
  top: 112px;
  align-self: start;
  max-height: calc(100vh - 134px);
  overflow-y: auto;
  padding: 8px 13px 10px 19px;
  border-left: 1px solid var(--mistakes-line);
  scrollbar-width: thin;
}

.mistakes-toc-title {
  margin: 0 0 14px;
  color: var(--mistakes-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.mistakes-toc a {
  display: block;
  margin: 0;
  padding: 7px 0;
  color: var(--mistakes-muted);
  font-size: 12px;
  font-weight: 650;
  line-height: 1.42;
  text-decoration: none;
  transition: color .2s ease, transform .2s ease;
}

.mistakes-toc a:hover,
.mistakes-toc a.is-active {
  color: var(--mistakes-orange-dark);
  transform: translateX(3px);
}

.mistakes-mobile-toc {
  display: none;
}

.mistakes-content.insights-article-content {
  width: 100%;
  max-width: none;
  margin: 0;
  color: var(--mistakes-copy);
  font-size: 18px;
  line-height: 1.82;
}

.mistakes-content > p {
  margin: 0 0 24px;
}

.mistakes-content > .mistakes-opening {
  margin-bottom: 28px;
  color: var(--mistakes-ink-soft);
  font-size: 21px;
  line-height: 1.72;
}

.mistakes-content > .mistakes-opening::first-letter {
  float: left;
  margin: 7px 10px 0 0;
  color: var(--mistakes-orange-dark);
  font-size: 67px;
  font-weight: 800;
  line-height: .73;
}

.mistakes-content > .mistakes-pullquote {
  position: relative;
  margin: 36px 0;
  padding: 31px 34px 31px 43px;
  border-block: 1px solid #d6d0c5;
  color: var(--mistakes-ink);
  background: var(--mistakes-paper-light);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  line-height: 1.58;
}

.mistakes-content > .mistakes-pullquote::before {
  position: absolute;
  top: 31px;
  bottom: 31px;
  left: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--mistakes-orange), var(--mistakes-blue));
  content: "";
}

.mistakes-content > .mistakes-pullquote em {
  color: var(--mistakes-orange-dark);
}

.mistakes-content > .mistakes-thesis {
  margin-bottom: 66px;
  padding-left: 24px;
  border-left: 2px solid var(--mistakes-blue);
  color: var(--mistakes-ink-soft);
  font-size: 19px;
  line-height: 1.78;
}

.mistakes-content.insights-article-content > h2,
.mistakes-content .mistakes-conclusion > h2 {
  position: relative;
  scroll-margin-top: 116px;
  margin: 76px 0 22px;
  padding-top: 27px;
  border-top: 1px solid var(--mistakes-line);
  color: var(--mistakes-ink);
  font-size: clamp(29px, 3.1vw, 38px);
  font-weight: 800;
  line-height: 1.17;
  letter-spacing: -.025em;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.mistakes-content.insights-article-content > h2::before,
.mistakes-content .mistakes-conclusion > h2::before {
  position: absolute;
  top: -5px;
  left: 0;
  width: 66px;
  height: 9px;
  border-right: 24px solid var(--mistakes-blue);
  background: var(--mistakes-orange);
  content: "";
}

.mistakes-content.insights-article-content > h3 {
  scroll-margin-top: 116px;
  margin: 39px 0 14px;
  color: var(--mistakes-ink);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -.01em;
}

.mistakes-content strong {
  color: var(--mistakes-ink);
  font-weight: 750;
}

.mistakes-content .insights-article-list {
  margin: 8px 0 32px;
  padding-left: 0;
  list-style: none;
}

.mistakes-content .insights-article-list li {
  position: relative;
  margin: 0;
  padding: 13px 16px 13px 43px;
  border-bottom: 1px solid var(--mistakes-line);
}

.mistakes-content .insights-article-list li::before {
  position: absolute;
  top: 19px;
  left: 16px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--mistakes-orange-dark);
  border-radius: 50%;
  content: "";
}

.mistakes-content .mistakes-three-questions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 27px 0 34px;
  border: 1px solid var(--mistakes-line);
  background: var(--mistakes-line);
}

.mistakes-content .mistakes-three-questions li {
  min-height: 112px;
  padding: 48px 20px 20px;
  border: 0;
  color: var(--mistakes-ink);
  background: var(--mistakes-paper-light);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
}

.mistakes-content .mistakes-three-questions li::before {
  top: 20px;
  left: 20px;
  width: 18px;
  height: 18px;
  border: 1px solid var(--mistakes-orange);
  border-radius: 0;
  box-shadow: 5px 5px 0 rgba(37, 99, 235, .16);
}

.mistakes-content > .mistakes-fix-label,
.mistakes-content > .mistakes-trust-label {
  display: inline-block;
  margin: 10px 0 8px;
  padding: 5px 0;
  border-bottom: 2px solid var(--mistakes-orange);
  color: var(--mistakes-ink);
}

.mistakes-content .mistakes-message-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.mistakes-content .mistakes-message-compare li {
  min-height: 130px;
  padding: 22px 22px 22px 25px;
  border: 1px solid #e3c6b3;
  background: #fff8f3;
}

.mistakes-content .mistakes-message-compare li:last-child {
  border-color: #b9cbea;
  background: #f3f7ff;
}

.mistakes-content .mistakes-message-compare li::before {
  display: none;
}

.mistakes-clarity-diagram {
  margin: 45px 0 72px;
  padding: 30px;
  border: 1px solid var(--mistakes-line);
  background: var(--mistakes-soft);
}

.mistakes-clarity-diagram > div {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr) 1.2fr;
  align-items: center;
  gap: 26px;
  min-height: 96px;
}

.mistakes-clarity-diagram span {
  position: relative;
  z-index: 1;
  display: block;
  width: 48px;
  height: 48px;
  justify-self: center;
  border: 1px solid #cbd5e1;
  border-radius: 50%;
  background: #fff;
  box-shadow: inset 0 0 0 13px var(--mistakes-paper);
}

.mistakes-clarity-diagram span::after {
  position: absolute;
  top: 22px;
  left: 47px;
  width: 48px;
  height: 1px;
  background: #94a3b8;
  content: "";
}

.mistakes-clarity-diagram i {
  display: block;
  width: 1px;
  height: 72px;
  justify-self: center;
  background: #94a3b8;
  transform: rotate(-90deg);
}

.mistakes-clarity-diagram b {
  position: absolute;
  right: 9%;
  width: 72px;
  height: 72px;
  border: 2px solid var(--mistakes-blue);
  border-radius: 2px;
  background: #fff;
  box-shadow: 9px 9px 0 #dbeafe;
}

.mistakes-clarity-diagram b::after {
  position: absolute;
  top: 25px;
  left: 19px;
  width: 29px;
  height: 13px;
  border-bottom: 3px solid var(--mistakes-orange-dark);
  border-left: 3px solid var(--mistakes-orange-dark);
  content: "";
  transform: rotate(-45deg);
}

.mistakes-content .mistakes-comparison-table {
  width: calc(100% + 100px);
  max-width: none;
  margin: 38px -50px 76px;
  border: 0;
  border-radius: 0;
  box-shadow: 0 18px 44px rgba(15, 23, 42, .1);
}

.mistakes-comparison-table table {
  min-width: 740px;
  font-size: 14px;
}

.mistakes-comparison-table th,
.mistakes-comparison-table td {
  padding: 16px 17px;
}

.mistakes-comparison-table th {
  color: #fff;
  background: var(--mistakes-ink);
}

.mistakes-comparison-table th:last-child {
  background: var(--mistakes-blue-dark);
}

.mistakes-comparison-table td:last-child {
  color: var(--mistakes-ink-soft);
  background: #f2f7ff;
}

.mistakes-content .mistakes-trust-list li {
  padding-top: 16px;
  padding-bottom: 16px;
}

.mistakes-content .mistakes-trust-list li::before {
  top: 19px;
  width: 13px;
  height: 13px;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(45deg, transparent 43%, var(--mistakes-orange-dark) 44% 56%, transparent 57%),
    linear-gradient(-45deg, transparent 43%, var(--mistakes-orange-dark) 44% 56%, transparent 57%);
}

.mistakes-architecture-diagram {
  position: relative;
  display: grid;
  grid-template-columns: 1.4fr .8fr;
  gap: 32px;
  margin: 45px 0 68px;
  padding: 33px;
  border-block: 1px solid #d8d2c8;
  background: var(--mistakes-paper-light);
}

.mistakes-architecture-core {
  display: grid;
  gap: 12px;
}

.mistakes-architecture-core span {
  display: block;
  height: 38px;
  border: 1px solid #cbd5e1;
  background: #fff;
}

.mistakes-architecture-core span:nth-child(2) {
  width: 84%;
  border-left: 5px solid var(--mistakes-orange);
}

.mistakes-architecture-core span:nth-child(3) {
  width: 68%;
  border-left: 5px solid var(--mistakes-blue);
}

.mistakes-architecture-proof {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mistakes-architecture-proof i {
  display: block;
  min-height: 50px;
  border: 1px solid #cbd5e1;
  background:
    linear-gradient(#e2e8f0 0 0) 13px 13px / 22px 5px no-repeat,
    linear-gradient(#e2e8f0 0 0) 13px 25px / calc(100% - 26px) 4px no-repeat,
    #fff;
}

.mistakes-mid-cta {
  position: relative;
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  margin: 60px 0 76px;
  padding: 34px 36px;
  overflow: hidden;
  border: 1px solid #d6d0c5;
  background: var(--mistakes-paper);
}

.mistakes-mid-cta::after {
  position: absolute;
  right: -40px;
  bottom: -70px;
  width: 150px;
  height: 150px;
  border: 24px solid rgba(37, 99, 235, .11);
  border-radius: 50%;
  content: "";
}

.mistakes-mid-cta > * {
  position: relative;
  z-index: 1;
}

.mistakes-mid-cta h2 {
  margin: 0;
  color: var(--mistakes-ink);
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -.02em;
}

.mistakes-mid-cta p {
  max-width: 510px;
  margin: 9px 0 0;
  color: var(--mistakes-copy);
  font-size: 15px;
  line-height: 1.6;
}

.mistakes-case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  width: calc(100% + 100px);
  margin: 32px -50px 0;
  border: 1px solid var(--mistakes-line);
  background: var(--mistakes-line);
}

.mistakes-content > .mistakes-case-grid > .mistakes-case {
  position: relative;
  margin: 0;
  padding: 56px 31px 32px;
  color: var(--mistakes-copy);
  background: #fffaf6;
  font-size: 16px;
  line-height: 1.72;
}

.mistakes-content > .mistakes-case-grid > .mistakes-case-clear {
  background: #f5f8ff;
}

.mistakes-case::before {
  position: absolute;
  top: 24px;
  left: 31px;
  width: 32px;
  height: 5px;
  background: var(--mistakes-orange);
  content: "";
}

.mistakes-case-clear::before {
  background: var(--mistakes-blue);
}

.mistakes-content > .mistakes-case-moral {
  margin: 0 0 76px;
  padding: 25px 32px;
  border: 1px solid var(--mistakes-line);
  border-top: 0;
  color: var(--mistakes-ink);
  background: var(--mistakes-paper-light);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  line-height: 1.55;
  text-align: center;
}

.mistakes-content .mistakes-analytics-list {
  border-top: 1px solid var(--mistakes-line);
}

.mistakes-content .mistakes-analytics-list li::before {
  border-color: var(--mistakes-blue);
}

.mistakes-technical-strip {
  margin: 44px 0 78px;
  padding: 28px;
  border: 1px solid var(--mistakes-line);
  background: var(--mistakes-ink);
}

.mistakes-technical-strip > div {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) 1.35fr;
  align-items: stretch;
  gap: 10px;
}

.mistakes-technical-strip span,
.mistakes-technical-strip strong {
  position: relative;
  display: grid;
  min-height: 82px;
  place-items: center;
  padding: 13px;
  border: 1px solid #475569;
  color: #e2e8f0;
  background: #172033;
  font-size: 13px;
  font-style: normal;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
}

.mistakes-technical-strip span::after {
  position: absolute;
  top: 50%;
  right: -11px;
  z-index: 1;
  width: 11px;
  height: 2px;
  background: var(--mistakes-orange);
  content: "";
}

.mistakes-technical-strip strong {
  border-color: #60a5fa;
  color: #fff;
  background: var(--mistakes-blue-dark);
}

.mistakes-content .mistakes-conclusion {
  position: relative;
  margin: 78px -50px 80px;
  padding: 2px 50px 37px;
  border-left: 5px solid var(--mistakes-orange);
  background: var(--mistakes-paper-light);
}

.mistakes-content .mistakes-conclusion > h2 {
  margin-top: 0;
  border-top: 0;
}

.mistakes-content .mistakes-conclusion > h2::before {
  top: 0;
}

.mistakes-content .mistakes-conclusion > p:last-child {
  margin-bottom: 0;
}

.mistakes-content #duk {
  margin-top: 0;
}

.mistakes-content.insights-article-content > .insights-faq-question {
  position: relative;
  margin: 0;
  padding: 25px 54px 12px 0;
  border-top: 1px solid var(--mistakes-line);
  color: var(--mistakes-ink);
  font-size: 19px;
  line-height: 1.38;
}

.mistakes-content.insights-article-content > .insights-faq-question::after {
  position: absolute;
  top: 25px;
  right: 4px;
  width: 18px;
  height: 18px;
  border-right: 2px solid var(--mistakes-orange-dark);
  border-bottom: 2px solid var(--mistakes-orange-dark);
  content: "";
}

.mistakes-content.insights-article-content > .insights-faq-question + p {
  margin-bottom: 29px;
  padding-right: 54px;
  color: var(--mistakes-copy);
  font-size: 16px;
  line-height: 1.72;
}

.mistakes-final-cta {
  position: relative;
  overflow: hidden;
  padding: 62px 0 68px;
  border-top: 1px solid #d6d0c5;
  background: var(--mistakes-paper);
}

.mistakes-final-cta::before {
  position: absolute;
  top: -120px;
  right: 5vw;
  width: 280px;
  height: 280px;
  border: 44px solid rgba(37, 99, 235, .1);
  border-radius: 50%;
  content: "";
}

.mistakes-final-cta-inner {
  position: relative;
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
}

.mistakes-final-cta h2 {
  margin: 0;
  color: var(--mistakes-ink);
  font-size: clamp(29px, 3.2vw, 40px);
  line-height: 1.16;
  letter-spacing: -.025em;
}

.mistakes-final-cta p {
  max-width: 660px;
  margin: 13px 0 0;
  color: var(--mistakes-copy);
  font-size: 17px;
  line-height: 1.65;
}

@keyframes mistakes-reveal {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1100px) {
  .mistakes-hero-grid {
    grid-template-columns: minmax(0, .95fr) minmax(390px, 1.05fr);
    gap: 42px;
  }

  .mistakes-body-grid {
    grid-template-columns: 190px minmax(0, 740px);
    gap: 44px;
  }

  .mistakes-content .mistakes-comparison-table,
  .mistakes-case-grid {
    width: calc(100% + 60px);
    margin-right: -30px;
    margin-left: -30px;
  }

  .mistakes-content .mistakes-conclusion {
    margin-right: -30px;
    margin-left: -30px;
    padding-right: 30px;
    padding-left: 30px;
  }
}

@media (max-width: 900px) {
  .mistakes-hero {
    padding-bottom: 60px;
  }

  .mistakes-hero-grid {
    grid-template-columns: 1fr;
  }

  .mistakes-hero-copy {
    max-width: 760px;
  }

  .mistakes-hero-visual {
    width: min(760px, 100%);
  }

  .mistakes-body-grid {
    grid-template-columns: minmax(0, 760px);
  }

  .mistakes-toc {
    display: none;
  }

  .mistakes-mobile-toc {
    display: block;
    margin: 0 0 48px;
    border-block: 1px solid var(--mistakes-line);
    background: var(--mistakes-soft);
  }

  .mistakes-mobile-toc summary {
    position: relative;
    padding: 17px 46px 17px 18px;
    color: var(--mistakes-ink);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    list-style: none;
  }

  .mistakes-mobile-toc summary::-webkit-details-marker {
    display: none;
  }

  .mistakes-mobile-toc summary::after {
    position: absolute;
    top: 50%;
    right: 20px;
    width: 9px;
    height: 9px;
    border-right: 2px solid var(--mistakes-orange-dark);
    border-bottom: 2px solid var(--mistakes-orange-dark);
    content: "";
    transform: translateY(-70%) rotate(45deg);
    transition: transform .2s ease;
  }

  .mistakes-mobile-toc[open] summary::after {
    transform: translateY(-25%) rotate(225deg);
  }

  .mistakes-mobile-toc nav {
    padding: 0 18px 17px;
    border-top: 1px solid var(--mistakes-line);
  }

  .mistakes-mobile-toc a {
    display: block;
    padding: 10px 0;
    color: var(--mistakes-copy);
    font-size: 14px;
    font-weight: 650;
    line-height: 1.4;
    text-decoration: none;
  }
}

@media (max-width: 640px) {
  .mistakes-wide {
    width: min(100% - 32px, 1180px);
  }

  .mistakes-reading-progress {
    top: 80px;
  }

  .mistakes-hero {
    padding: 25px 0 45px;
  }

  .mistakes-hero::before {
    background-size: 36px 36px;
  }

  .mistakes-hero::after {
    right: 16px;
    width: 104px;
  }

  .mistakes-hero .insights-breadcrumb {
    margin-bottom: 29px;
    font-size: 12px;
  }

  .mistakes-hero .insights-breadcrumb a {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
  }

  .mistakes-hero-grid {
    gap: 38px;
  }

  .mistakes-hero h1 {
    font-size: clamp(34px, 10.4vw, 43px);
    line-height: 1.04;
    letter-spacing: -.043em;
  }

  .mistakes-hero .insights-article-deck {
    margin-top: 20px;
    font-size: 17px;
    line-height: 1.62;
  }

  .mistakes-hero-actions {
    align-items: stretch;
    flex-direction: column;
    margin-top: 26px;
  }

  .mistakes-primary-action,
  .mistakes-read-action,
  .mistakes-hero .insights-button-secondary {
    width: 100%;
  }

  .mistakes-read-action {
    justify-content: center;
    border: 1px solid #94a3b8;
  }

  .mistakes-hero-visual {
    padding: 7px;
  }

  .mistakes-article-body {
    padding: 49px 0 67px;
  }

  .mistakes-mobile-toc {
    margin-bottom: 38px;
  }

  .mistakes-mobile-toc a {
    padding-block: 13px;
  }

  .mistakes-content.insights-article-content {
    font-size: 17px;
    line-height: 1.75;
  }

  .mistakes-content > p {
    margin-bottom: 21px;
  }

  .mistakes-content > .mistakes-opening {
    font-size: 19px;
    line-height: 1.66;
  }

  .mistakes-content > .mistakes-opening::first-letter {
    font-size: 57px;
  }

  .mistakes-content > .mistakes-pullquote {
    margin: 30px 0;
    padding: 25px 21px 25px 30px;
    font-size: 19px;
  }

  .mistakes-content > .mistakes-pullquote::before {
    top: 25px;
    bottom: 25px;
  }

  .mistakes-content > .mistakes-thesis {
    margin-bottom: 56px;
    padding-left: 17px;
    font-size: 17px;
  }

  .mistakes-content.insights-article-content > h2,
  .mistakes-content .mistakes-conclusion > h2 {
    margin-top: 60px;
    padding-top: 24px;
    font-size: 29px;
  }

  .mistakes-content.insights-article-content > h3 {
    margin-top: 34px;
    font-size: 20px;
  }

  .mistakes-content .mistakes-three-questions,
  .mistakes-content .mistakes-message-compare,
  .mistakes-case-grid {
    grid-template-columns: 1fr;
  }

  .mistakes-content .mistakes-three-questions li {
    min-height: 88px;
  }

  .mistakes-content .mistakes-message-compare li {
    min-height: 0;
  }

  .mistakes-clarity-diagram {
    margin: 38px 0 62px;
    padding: 23px 15px;
  }

  .mistakes-clarity-diagram > div {
    gap: 8px;
  }

  .mistakes-clarity-diagram span {
    width: 36px;
    height: 36px;
    box-shadow: inset 0 0 0 9px var(--mistakes-paper);
  }

  .mistakes-clarity-diagram span::after {
    top: 16px;
    left: 35px;
    width: 18px;
  }

  .mistakes-clarity-diagram i {
    height: 42px;
  }

  .mistakes-clarity-diagram b {
    right: 2%;
    width: 54px;
    height: 54px;
  }

  .mistakes-clarity-diagram b::after {
    top: 18px;
    left: 14px;
    width: 22px;
    height: 10px;
  }

  .mistakes-content .mistakes-comparison-table,
  .mistakes-case-grid {
    width: 100%;
    margin-right: 0;
    margin-left: 0;
  }

  .mistakes-content .mistakes-comparison-table {
    margin-bottom: 62px;
  }

  .mistakes-architecture-diagram {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 57px;
    padding: 25px 20px;
  }

  .mistakes-mid-cta {
    align-items: stretch;
    grid-template-columns: 1fr;
    margin: 50px 0 62px;
    padding: 28px 23px;
  }

  .mistakes-mid-cta h2 {
    font-size: 24px;
  }

  .mistakes-content > .mistakes-case-grid > .mistakes-case {
    padding: 51px 23px 27px;
    font-size: 15px;
  }

  .mistakes-case::before {
    left: 23px;
  }

  .mistakes-content > .mistakes-case-moral {
    margin-bottom: 62px;
    padding: 22px 20px;
    font-size: 18px;
  }

  .mistakes-technical-strip {
    margin-bottom: 62px;
    padding: 19px;
  }

  .mistakes-technical-strip > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mistakes-technical-strip span::after {
    display: none;
  }

  .mistakes-content .mistakes-conclusion {
    margin: 62px 0 66px;
    padding: 2px 21px 30px;
  }

  .mistakes-content.insights-article-content > .insights-faq-question {
    padding-right: 34px;
    font-size: 18px;
  }

  .mistakes-content.insights-article-content > .insights-faq-question + p {
    padding-right: 0;
  }

  .mistakes-final-cta {
    padding: 50px 0 54px;
  }

  .mistakes-final-cta-inner {
    align-items: stretch;
    grid-template-columns: 1fr;
    gap: 27px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mistakes-article *,
  .mistakes-article *::before,
  .mistakes-article *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}