.postback-workspace {
  display: grid;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.postback-heading,
.postback-own,
.postback-admin,
.postback-guide {
  padding: clamp(20px, 3vw, 34px);
}

.postback-own,
.postback-admin,
.postback-guide {
  border-top: 1px solid var(--line);
}

.postback-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.postback-heading h2 {
  margin: 4px 0 7px;
  font-size: clamp(26px, 3vw, 40px);
  letter-spacing: -0.035em;
}

.postback-heading p,
.postback-section-heading p {
  max-width: 760px;
  color: var(--muted);
}

.postback-method {
  flex: 0 0 auto;
  justify-self: start;
  border-radius: 999px;
  background: var(--ink);
  color: white;
  padding: 8px 13px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.postback-section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 16px;
}

.postback-section-heading h3 {
  margin: 0 0 5px;
  font-size: 19px;
}

.postback-url-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: stretch;
}

.postback-url-row textarea {
  width: 100%;
  min-height: 86px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f8f7f3;
  color: var(--ink);
  padding: 12px;
  font: 12px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.postback-url-actions {
  display: grid;
  align-content: center;
  gap: 8px;
  min-width: 170px;
}

.postback-table td:nth-child(2) {
  min-width: 360px;
}

.postback-table-url {
  display: block;
  max-width: 620px;
  overflow: hidden;
  color: var(--muted);
  font: 11px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.postback-table-actions {
  display: flex;
  gap: 7px;
}

.postback-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: postback-step;
}

.postback-steps li {
  position: relative;
  min-width: 0;
  padding: 42px 22px 0 0;
  counter-increment: postback-step;
}

.postback-steps li::before {
  content: counter(postback-step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  color: var(--accent);
  font-size: 24px;
  font-weight: 900;
}

.postback-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 15px;
  right: 22px;
  left: 42px;
  height: 1px;
  background: var(--line);
}

.postback-steps strong,
.postback-steps span,
.postback-steps code {
  display: block;
}

.postback-steps span,
.postback-steps code {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.postback-examples {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.postback-examples p {
  margin: 0;
}

@media (max-width: 980px) {
  .postback-steps {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .postback-steps li {
    padding: 0 0 0 44px;
  }

  .postback-steps li::before {
    top: -5px;
  }

  .postback-steps li::after {
    display: none;
  }
}

@media (max-width: 720px) {
  .postback-heading,
  .postback-section-heading {
    display: grid;
    grid-template-columns: 1fr;
  }

  .postback-url-row {
    grid-template-columns: 1fr;
  }

  .postback-mapping-form,
  .postback-examples {
    grid-template-columns: 1fr;
  }

  .postback-url-actions {
    min-width: 0;
  }

  .postback-table td:nth-child(3) {
    min-width: 260px;
  }
}