.programming-explainer {
  width: min(100%, 680px);
  margin: 0 auto 24px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-soft);
}

.programming-explainer strong,
.programming-explainer span {
  display: block;
}

.programming-explainer strong {
  margin-bottom: 4px;
}

.programming-explainer span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.programming-inputs {
  width: min(100%, 680px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 18px;
}

.programming-inputs label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.programming-inputs input {
  width: 100%;
  height: 50px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
}

.angle-input {
  position: relative;
}

.angle-input input {
  padding-right: 42px;
}

.angle-input span {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-weight: 800;
}

.programming-solution-width {
  width: min(100% - 32px, 1080px);
  margin: 0 auto;
}

.program-solution-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: 28px;
  align-items: start;
}

.program-solution-steps {
  min-width: 0;
}

.program-code {
  margin: 14px 0 0;
  padding: 16px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.65;
  white-space: pre;
}

.code-line {
  margin: 7px 0;
  padding: 7px 10px;
  border-radius: 7px;
  background: var(--surface-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 800;
}

.program-visual-panel {
  position: sticky;
  top: 24px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.program-visual-eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
}

.program-visual-panel h3 {
  margin: 0 0 18px;
}

.program-svg-wrap {
  width: 100%;
  overflow: hidden;
}

.program-svg {
  display: block;
  width: 100%;
  height: auto;
}

.pattern-shape {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  opacity: .55;
  stroke-linejoin: round;
}

.pattern-center {
  fill: var(--text);
}

.program-visual-help {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.program-visual-help p {
  margin: 0 0 8px;
  color: var(--muted);
  line-height: 1.5;
}

.program-visual-help p:last-child {
  margin-bottom: 0;
}

.program-not-scale {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

@media (max-width: 900px) {
  .program-solution-layout {
    grid-template-columns: 1fr;
  }

  .program-visual-panel {
    position: static;
  }
}

@media (max-width: 700px) {
  .programming-inputs {
    grid-template-columns: 1fr;
  }

  .programming-inputs > div {
    width: min(100%, 280px);
    margin: 0 auto;
  }
}

.action-line {
  margin: 12px 0;
  padding: 12px 14px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: var(--surface-soft);
  font-size: 18px;
  font-weight: 900;
}

.repeat-box {
  margin: 12px 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-soft);
}

.repeat-box p {
  margin: 0 0 8px;
}

.repeat-box p:last-child {
  margin-bottom: 0;
}

.word-card {
  margin: 0 0 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-soft);
}

.word-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

.word-card p {
  margin: 4px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.single-shape {
  fill: var(--accent);
  fill-opacity: .08;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linejoin: round;
}

.program-svg-title {
  fill: var(--text);
  font-size: 14px;
  font-weight: 900;
}

.program-separator {
  stroke: var(--line);
  stroke-width: 1.5;
  stroke-dasharray: 5 5;
}