.start-shell {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 80px;
}

.start-hero {
  max-width: 760px;
  margin-bottom: 32px;
}

.start-hero h1 {
  margin: 10px 0 18px;
  font-size: clamp(2.3rem, 7vw, 4.6rem);
  line-height: .98;
  letter-spacing: -.055em;
}

.start-lede {
  max-width: 680px;
  color: var(--ink-soft);
  font-size: 1.12rem;
  line-height: 1.65;
}

.start-card,
.trust-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, .84);
  padding: clamp(22px, 5vw, 42px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .18);
}

.start-steps {
  margin: 0;
  padding-left: 1.4rem;
}

.start-steps li {
  padding: 0 0 28px 12px;
}

.start-steps li:last-child {
  padding-bottom: 0;
}

.start-steps h2,
.trust-card h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.start-steps p,
.trust-card p,
.trust-card li {
  color: var(--ink-soft);
  line-height: 1.6;
}

.harness-picker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  border: 0;
}

.harness-picker legend {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.harness-picker label {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .65);
  cursor: pointer;
}

.harness-picker label:has(input:checked) {
  border-color: var(--seal);
  box-shadow: 0 0 0 2px rgba(151, 45, 37, .12);
}

.harness-picker input {
  width: 19px;
  height: 19px;
  margin: 0;
  accent-color: var(--seal);
}

.harness-picker span,
.harness-picker small {
  display: block;
}

.harness-picker small {
  margin-top: 2px;
  color: var(--ink-soft);
}

.workspace-download {
  display: inline-flex;
  margin: 8px 0 18px;
  text-decoration: none;
}

.workspace-guide {
  margin: 0 0 18px;
  padding-left: 1.3rem;
}

.workspace-guide li {
  padding: 0 0 10px 4px;
  color: var(--ink-soft);
  line-height: 1.55;
}

.workspace-warning {
  font-size: .92rem;
}

.workspace-check {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-top: 18px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .65);
  color: var(--ink);
  line-height: 1.45;
  cursor: pointer;
}

.workspace-check input {
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  flex: 0 0 auto;
  accent-color: var(--seal);
}

#prompt-step[aria-disabled="true"] h2 {
  opacity: .48;
}

.prompt-lock {
  margin: 12px 0 0;
  padding: 13px 15px;
  border-radius: 12px;
  background: rgba(0, 0, 0, .05);
  font-size: .92rem;
}

[hidden] {
  display: none !important;
}

.prompt-box {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 14px;
  background: #0c0d0f;
}

.prompt-box pre {
  margin: 0 0 16px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #f1eee8;
  font: 500 .88rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.copy-status {
  min-height: 1.5rem;
  margin: 20px 0 0;
  color: var(--ink-soft);
}

.trust-card {
  margin-top: 22px;
}

.trust-card ul {
  padding-left: 1.25rem;
}

@media (max-width: 560px) {
  .start-shell { padding-top: 32px; }
  .start-card, .trust-card { border-radius: 16px; }
  .harness-picker { grid-template-columns: 1fr; }
}