/* Process demonstrations extend the existing white course pages. */
.process-demos { padding-block: 32px 48px; border-top: 1px solid var(--line); }
.process-demos .section-heading { align-items: start; }
.process-demos .process-intro { max-width: 760px; margin: 14px 0 24px; color: var(--muted); font-size:18px; }
.process-tabs { display: flex; flex-wrap: wrap; gap: 0 26px; border-bottom: 1px solid var(--line); margin: 0 0 30px; }
.process-tabs a { display: inline-flex; align-items: baseline; gap: 8px; min-height: 48px; padding: 12px 0; border-bottom: 2px solid transparent; color: var(--muted); text-decoration: none; font-size:18px; }
.process-tabs a span { font-size:18px; font-variant-numeric: tabular-nums; }
.process-tabs a[aria-selected="true"] { border-color: var(--blue); color: var(--blue); font-weight: 600; }
.process-tabs a:hover { color: var(--blue); }
.process-tabs a:focus-visible, .process-demos button:focus-visible, .process-demos select:focus-visible, .process-demos input:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
.process-panel { min-width: 0; margin-top: 28px; scroll-margin-top: 90px; }
.process-panel[hidden] { display: none !important; }
.process-panel > h3 { font-size:24px; line-height: 1.25; margin-bottom: 14px; font-weight: 500; }
.process-panel > p { max-width: 820px; font-size:18px; line-height: 1.65; }
.process-explanation { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px 48px; margin: 22px 0; }
.process-explanation > div { min-width: 0; border-top: 1px solid var(--line); padding-top: 12px; }
.process-explanation dt { color: var(--muted); font-size:18px; margin-bottom: 5px; }
.process-explanation dd { font-size:18px; margin: 0; line-height: 1.6; }
.process-code { max-width: 850px; white-space: pre-wrap; overflow-wrap: anywhere; padding: 15px 18px; margin: 20px 0; background: var(--pale); border-left: 2px solid var(--blue); font: 17px/1.7 var(--font-code); }
.process-demos .micro-lesson { max-width: 850px; margin-block: 26px 30px; }
.process-boundary { color: var(--muted); font-size:18px !important; }
.demo-schedule-lab { margin-top: 30px; padding-top: 26px; border-top: 1px solid var(--line); }
.demo-schedule-lab h4 { font-size:24px; font-weight: 500; line-height: 1.35; margin: 0 0 8px; }
.demo-scope { margin: 0 0 20px; color: var(--muted); font-size:18px; }
.demo-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 30px; margin-block: 20px; }
.demo-workers-label { display: flex; align-items: center; gap: 14px; font-size:18px; }
.demo-controls select { min-width: 132px; min-height: 44px; padding: 8px 32px 8px 10px; border: 1px solid #aebac8; background: #fff; color: var(--ink); font: inherit; border-radius: 0; }
.demo-serial-label { display: flex; align-items: center; gap: 10px; max-width: 520px; font-size:18px; cursor: pointer; }
.demo-serial-label input { width: 19px; height: 19px; flex: 0 0 19px; accent-color: var(--blue); }
.demo-serial-label small { color: var(--muted); font-size:18px; }
.demo-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin: 18px 0 24px; }
.demo-metrics > div { min-width: 0; }
.demo-metrics dt { font-size:18px; color: var(--muted); }
.demo-metrics dd { margin: 5px 0 0; font-size:24px; line-height: 1.3; font-variant-numeric: tabular-nums; color: var(--blue); }
.demo-metrics small { display: block; color: var(--muted); font-size:18px; margin-top: 3px; }
.demo-schedule { position: relative; padding: 20px 0 8px; }
.demo-lane { display: grid; grid-template-columns: 102px minmax(0, 1fr); column-gap: 14px; align-items: center; margin-bottom: 13px; }
.demo-lane-name { font-size:18px; line-height: 1.25; color: var(--muted); }
.demo-lane-track { position: relative; min-width: 0; height: 35px; background: repeating-linear-gradient(to right, #f3f5f7 0%, #f3f5f7 calc(33.3333% - 1px), #dce1e6 calc(33.3333% - 1px), #dce1e6 33.3333%); border-bottom: 1px solid #dce1e6; }
.demo-lane[data-baseline="true"] { margin-bottom: 25px; }
.demo-lane[data-baseline="true"] .demo-lane-track { background-color: #f7f8f9; }
.demo-job { position: absolute; top: 3px; bottom: 3px; border: 1px solid #a6b6ca; background: #e8edf4; color: #405065; display: flex; align-items: center; justify-content: center; overflow: hidden; font-size:18px; line-height: 1; }
.demo-job[data-state="running"] { border-color: var(--copper); background: var(--copper); color: #fff; }
.demo-job[data-state="done"] { border-color: var(--blue); background: var(--blue); color: #fff; }
.demo-job[data-kind="serial"] { border-style: dashed; background: #fff6eb; border-color: #c89570; color: #8b4c26; }
.demo-job[data-kind="serial"][data-state="done"] { background: #ead7c5; }
.demo-job[data-kind="serial"][data-state="running"] { background: var(--copper); color: white; }
.demo-job[data-kind="serial"][data-short="true"] .demo-job-label { visibility: hidden; }
.demo-cursor { position: absolute; top: -5px; bottom: -5px; width: 2px; background: var(--ink); pointer-events: none; transform: translateX(-1px); z-index: 2; }
.demo-axis { display: grid; grid-template-columns: 102px minmax(0, 1fr); gap: 14px; font-size:18px; color: var(--muted); margin-top: 7px; }
.demo-axis-ticks { display: flex; justify-content: space-between; font-variant-numeric: tabular-nums; }
.demo-legend { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size:18px; margin: 14px 0 18px; color: var(--muted); }
.demo-legend span { display: inline-flex; align-items: center; gap: 7px; }
.demo-legend i { width: 11px; height: 11px; display: inline-block; border: 1px solid #a6b6ca; background: #e8edf4; }
.demo-legend .running { background: var(--copper); border-color: var(--copper); }
.demo-legend .done { background: var(--blue); border-color: var(--blue); }
.demo-task-states { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 10px; margin: 18px 0; }
.demo-task { min-width: 0; border-top: 2px solid #dce1e6; padding-top: 7px; font-size:18px; }
.demo-task strong { display: inline-block; font-size:18px; margin-right: 4px; }
.demo-task span, .demo-task small { display: block; color: var(--muted); font-size:18px; line-height: 1.5; }
.demo-task[data-state="running"] { border-color: var(--copper); color: var(--copper); }
.demo-task[data-state="done"] { border-color: var(--blue); color: var(--blue); }
.demo-clock-label { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; margin: 22px 0 9px; font-size:18px; }
.demo-clock-label output { font-size:19px; color: var(--ink); font-variant-numeric: tabular-nums; }
.demo-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 24px; margin-top: 18px; }
.demo-actions button { min-height: 44px; padding: 9px 17px; border: 1px solid #aebac8; border-radius: 0; background: #fff; color: var(--blue); font: inherit; font-size:18px; }
.demo-actions button:first-child { background: var(--blue); border-color: var(--blue); color: #fff; min-width: 135px; }
.demo-status { font-size:18px; line-height: 1.5; color: var(--muted); }
.demo-small-note { max-width: 850px; margin: 18px 0 0; font-size:18px; color: var(--muted); }
.process-footnote { margin-top: 28px; font-size:18px; color: var(--muted); }
@media (max-width: 700px) {
  .process-demos { padding-block: 26px 32px; }
  .process-demos .section-heading { display: block; }
  .process-demos .section-heading > span { display: block; margin-top: 14px; text-align: left; }
  .process-demos .process-intro, .process-panel > p { font-size:18px; }
  .process-tabs { gap: 0 20px; margin-bottom: 22px; }
  .process-tabs a { font-size:18px; gap: 6px; }
  .process-tabs a span { display: none; }
  .process-panel > h3 { font-size:24px; }
  .process-explanation { grid-template-columns: 1fr; gap: 14px; }
  .process-code { font-size:17px; padding: 12px; }
  .demo-controls { display: block; }
  .demo-workers-label { justify-content: space-between; }
  .demo-serial-label { margin-top: 18px; align-items: start; }
  .demo-serial-label input { margin-top: 4px; }
  .demo-metrics { gap: 12px; }
  .demo-metrics dd { font-size:24px; }
  .demo-metrics dt, .demo-metrics small { font-size:18px; }
  .demo-lane, .demo-axis { grid-template-columns: 66px minmax(0, 1fr); gap: 8px; }
  .demo-lane-name { font-size:18px; }
  .demo-job[data-kind="serial"] .demo-job-label { visibility: hidden; }
  .demo-task-states { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 13px 9px; }
  .demo-actions { gap: 10px 15px; }
  .demo-status { width: 100%; }
}
@media (max-width: 479px) {
  /* A one-unit bar is too narrow for a readable letter; its task card remains. */
  .demo-job[data-kind="task"][data-short="true"] .demo-job-label { visibility: hidden; }
}
@media (prefers-reduced-motion: reduce) {
  .process-demos *, .process-demos *::before, .process-demos *::after { scroll-behavior: auto; transition: none; }
}
.process-demos .section-heading > span br { display: initial; }

/* Direct GPU entry points and the three-step optimization lesson. */
.gpu-entry-links { display: flex; flex-wrap: wrap; gap: 6px 20px; padding-top: 18px; margin-top: 16px; border-top: 1px solid var(--line); }
.gpu-entry-links a { display: inline-flex; align-items: center; gap: 7px; min-height: 44px; font-size:18px; text-decoration-thickness: 1px; }
.gpu-entry-links a:first-child { font-weight: 600; }
.work-flow strong a { color: inherit; text-decoration-color: #a6b6ca; text-underline-offset: 4px; }
.work-flow strong a:hover { color: var(--blue); }
.parallel-course .lesson-navigation > .wrap { gap: 23px; }
.optimization-workflow { padding-block: 34px 38px; border-top: 1px solid var(--line); }
.optimization-workflow .section-heading { align-items: start; }
.optimization-workflow .section-heading > div { max-width: 760px; }
.optimization-workflow .section-heading > span br, .current-source .section-heading > span br { display: initial; }
.workflow-intro { max-width: 850px; color: var(--muted); }
.workflow-index { display: flex; flex-wrap: wrap; gap: 4px 30px; margin-block: 20px 6px; }
.workflow-index a { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; font-size:18px; }
.workflow-index a span { font-size:18px; color: var(--muted); text-decoration: none; }
.workflow-lesson { padding-block: 30px 28px; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.workflow-lesson:last-child { border-bottom: 0; padding-bottom: 0; }
.workflow-heading { display: grid; grid-template-columns: 32px minmax(0, 850px); gap: 16px; align-items: baseline; }
.workflow-heading > span { color: var(--copper); font-size:18px; font-variant-numeric: tabular-nums; }
.workflow-heading h3 { font-size:24px; font-weight: 500; line-height: 1.25; }
.workflow-heading p { margin: 12px 0 0; color: var(--muted); font-size:18px; }
.workflow-lesson .micro-lesson { max-width: 850px; margin-block: 22px 26px; }
.workflow-lesson .process-explanation { max-width: 1050px; }
.workflow-lesson .process-boundary { max-width: 850px; margin-bottom: 0; }
.workflow-code-label { color: var(--muted); font-size:17px; margin: 20px 0 6px; }
.workflow-code-label + .process-code { margin-top: 0; }
.parallel-course #resources { display: block; }
.current-source { scroll-margin-top: 90px; padding-bottom: 28px; }
.current-source > p { max-width: 850px; font-size:18px; }
.current-source-links { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 28px; margin: 16px 0 14px; }
.current-source-links a { display: inline-flex; align-items: center; min-height: 44px; font-size:18px; }
.current-source-links a:first-child { font-weight: 600; }
.current-source .current-source-requirements { color: var(--muted); font-size:18px; line-height: 1.7; }
.current-source code { font-family: var(--font-code); font-size: .9em; }
.resource-shortcuts { display: flex; flex-wrap: wrap; gap: 4px 24px; margin-top: 20px; font-size:18px; }
.resource-shortcuts a { display: inline-flex; align-items: center; min-height: 44px; }
.legacy-resources { display: flex; justify-content: space-between; align-items: start; gap: 32px; padding-top: 24px; border-top: 1px solid var(--line); }
.legacy-resources > details { min-width: 0; flex: 1; }
.legacy-resources > .downloads { flex: 0 1 360px; }
@media (max-width: 1050px) {
  .parallel-course .lesson-navigation > .wrap { gap: 16px; }
  .parallel-course .lesson-navigation a { font-size:18px; }
  .legacy-resources { display: block; }
  .legacy-resources > .downloads { justify-content: start; margin-top: 18px; }
}
@media (max-width: 700px) {
  .gpu-entry-links { gap: 2px 20px; margin-top: 12px; padding-top: 12px; }
  .gpu-entry-links a { font-size:18px; }
  .parallel-course .lesson-navigation > .wrap { gap: 20px; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; }
  .parallel-course .lesson-navigation a { flex: 0 0 auto; white-space: nowrap; }
  .optimization-workflow { padding-block: 28px; }
  .optimization-workflow .section-heading, .current-source .section-heading { display: block; }
  .optimization-workflow .section-heading > span, .current-source .section-heading > span { display: block; margin-top: 14px; text-align: left; }
  .workflow-intro, .current-source > p { font-size:18px; }
  .workflow-index { gap: 2px 22px; }
  .workflow-index a { font-size:18px; }
  .workflow-heading { grid-template-columns: 22px minmax(0, 1fr); gap: 11px; }
  .workflow-heading h3 { font-size:24px; }
  .workflow-heading p { font-size:18px; }
  .current-source-links { gap: 6px 20px; }
  .current-source-links a, .resource-shortcuts { font-size:18px; }
  .resource-shortcuts { gap: 2px 22px; }
}