.sertel-legacy-intro,
.sertel-legacy-card,
.sertel-checklist,
.sertel-legacy-download,
.sertel-legacy-sources {
  border: 1px solid #dfe7e3;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 35px rgba(22, 51, 43, .07);
}

.sertel-legacy-intro {
  margin: 1.5rem 0 2rem;
  padding: clamp(1.35rem, 3vw, 2.25rem);
  background: linear-gradient(135deg, #f0faf5 0%, #fff 62%);
  border-left: 5px solid #0f766e;
}

.sertel-legacy-intro h2 { margin: .35rem 0 .75rem; }
.sertel-legacy-intro p:last-child { margin-bottom: 0; }

.sertel-legacy-eyebrow,
.sertel-legacy-card__label,
.sertel-legacy-download__tag {
  color: #0f766e;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sertel-legacy-alert {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: .9rem;
  margin: 1.75rem 0;
  padding: 1.15rem 1.25rem;
  border-radius: 14px;
}

.sertel-legacy-alert p { margin: .35rem 0 0; }
.sertel-legacy-alert__icon {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  font-weight: 900;
}

.sertel-legacy-alert--warning { background: #fff8e6; border: 1px solid #f5d889; }
.sertel-legacy-alert--warning .sertel-legacy-alert__icon { color: #7c4a03; background: #f8dc8c; }
.sertel-legacy-alert--info { background: #eff8ff; border: 1px solid #bfdbfe; }
.sertel-legacy-alert--info .sertel-legacy-alert__icon { color: #1d4ed8; background: #dbeafe; }
.sertel-legacy-alert--note { background: #f0fdf4; border: 1px solid #bbf7d0; }
.sertel-legacy-alert--note .sertel-legacy-alert__icon { color: #166534; background: #dcfce7; }

.sertel-legacy-flow,
.sertel-legacy-steps {
  list-style: none;
  padding: 0;
}

.sertel-legacy-flow {
  display: grid;
  gap: .75rem;
  margin: 1.25rem 0 2rem;
}

.sertel-legacy-flow li {
  display: grid;
  grid-template-columns: 2.7rem 1fr;
  align-items: center;
  gap: .9rem;
  padding: .8rem 1rem;
  border: 1px solid #e4ebe8;
  border-radius: 12px;
  background: #fbfdfc;
}

.sertel-legacy-flow li > span {
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  color: #fff;
  background: #0f766e;
  font-weight: 800;
}

.sertel-legacy-flow small,
.sertel-check-item small {
  display: block;
  margin-top: .15rem;
  color: #5b6965;
  line-height: 1.45;
}

.sertel-legacy-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  list-style: none;
  padding: 0;
}

.sertel-legacy-feature-grid li {
  padding: 1rem;
  border-radius: 12px;
  background: #f7faf9;
  border: 1px solid #e3ebe7;
}

.sertel-legacy-feature-grid strong,
.sertel-legacy-feature-grid span { display: block; }
.sertel-legacy-feature-grid span { color: #52635e; margin-top: .25rem; }

.sertel-legacy-two-column,
.sertel-legacy-do-dont {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.25rem 0 2rem;
}

.sertel-legacy-card { padding: 1.35rem; }
.sertel-legacy-card h3 { margin: .25rem 0 .55rem; }
.sertel-legacy-card p:last-child { margin-bottom: 0; }

.sertel-legacy-steps { counter-reset: sertel-step; }
.sertel-legacy-steps li {
  counter-increment: sertel-step;
  position: relative;
  margin: 0 0 .8rem;
  padding: 1rem 1rem 1rem 3.9rem;
  border-left: 3px solid #7dd3c7;
  background: #f8fbfa;
}

.sertel-legacy-steps li::before {
  content: counter(sertel-step);
  position: absolute;
  left: 1rem;
  top: .95rem;
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 50%;
  color: #fff;
  background: #0f766e;
  font-weight: 800;
}

.sertel-legacy-table-wrap { overflow-x: auto; margin: 1rem 0 1.75rem; }
.sertel-legacy-table { width: 100%; min-width: 720px; border-collapse: collapse; font-size: .94rem; }
.sertel-legacy-table th,
.sertel-legacy-table td { padding: .8rem .9rem; border: 1px solid #dfe7e3; text-align: left; vertical-align: top; }
.sertel-legacy-table th { color: #fff; background: #145c55; }
.sertel-legacy-table tbody tr:nth-child(even) { background: #f7faf9; }

.sertel-checklist { margin: 1rem 0; padding: clamp(1rem, 2.5vw, 1.6rem); }
.sertel-checklist__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #e3ebe7;
}

.sertel-checklist select {
  min-width: 13rem;
  padding: .65rem .8rem;
  border: 1px solid #b8c9c3;
  border-radius: 9px;
  background: #fff;
  font: inherit;
}

.sertel-checklist__progress {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: .8rem;
  margin: 1rem 0;
  font-size: .86rem;
  font-weight: 700;
}

.sertel-checklist__bar { overflow: hidden; height: .6rem; border-radius: 999px; background: #e8efec; }
.sertel-checklist__bar span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, #0f766e, #22a08f); transition: width .25s ease; }
.sertel-checklist__items { display: grid; gap: .65rem; }

.sertel-check-item {
  display: grid;
  grid-template-columns: 1.35rem 1fr;
  gap: .75rem;
  padding: .85rem;
  border: 1px solid #e4ebe8;
  border-radius: 11px;
  cursor: pointer;
}

.sertel-check-item:hover { background: #f8fbfa; }
.sertel-check-item[hidden] { display: none; }
.sertel-check-item input { width: 1.1rem; height: 1.1rem; margin-top: .16rem; accent-color: #0f766e; }
.sertel-check-item:has(input:checked) { background: #f0fdf8; border-color: #9ad9ca; }

.sertel-checklist__actions { display: flex; gap: .65rem; margin-top: 1rem; }
.sertel-checklist__actions button {
  padding: .62rem .9rem;
  border: 1px solid #0f766e;
  border-radius: 9px;
  color: #0f5f57;
  background: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.sertel-checklist__actions button:hover { color: #fff; background: #0f766e; }
.sertel-legacy-caption { color: #63726d; font-size: .85rem; }

.sertel-legacy-do-dont section { padding: 1.25rem; border-radius: 14px; }
.sertel-legacy-do-dont section:first-child { background: #effbf5; border: 1px solid #bde8ce; }
.sertel-legacy-do-dont section:last-child { background: #fff5f3; border: 1px solid #f4c6bd; }
.sertel-legacy-do-dont h3 { margin-top: 0; }
.sertel-legacy-do-dont li + li { margin-top: .45rem; }

.sertel-legacy-download {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1.5rem;
  margin: 1rem 0 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, #f0faf5 0%, #fff 70%);
}

.sertel-legacy-download h3 { margin: .25rem 0 .4rem; }
.sertel-legacy-download p { margin: 0; }
.sertel-legacy-download__button {
  display: inline-flex;
  justify-content: center;
  padding: .8rem 1rem;
  border-radius: 10px;
  color: #fff !important;
  background: #0f766e;
  text-decoration: none !important;
  font-weight: 800;
}
.sertel-legacy-download__button:hover { background: #0a5b55; }

.sertel-legacy-faq { margin: .7rem 0; border: 1px solid #dfe7e3; border-radius: 12px; background: #fff; }
.sertel-legacy-faq summary { padding: 1rem 1.1rem; cursor: pointer; font-weight: 750; }
.sertel-legacy-faq p { margin: 0; padding: 0 1.1rem 1.1rem; }
.sertel-legacy-sources { margin-top: 2rem; padding: 1.4rem; background: #f8fbfa; }
.sertel-legacy-sources h2 { margin-top: 0; }

@media (max-width: 720px) {
  .sertel-legacy-feature-grid,
  .sertel-legacy-two-column,
  .sertel-legacy-do-dont,
  .sertel-legacy-download { grid-template-columns: 1fr; }
  .sertel-checklist__toolbar { align-items: stretch; flex-direction: column; }
  .sertel-checklist select { width: 100%; }
  .sertel-legacy-download__button { width: 100%; }
}

@media print {
  .sertel-checklist__toolbar,
  .sertel-checklist__actions,
  .sertel-legacy-download__button { display: none !important; }
  .sertel-checklist { box-shadow: none; }
}