/* Agent × MCP × Skill course deck
 * Built from the presenter-mode-reveal template.
 * All colours derive from the active html-ppt theme tokens.
 */

.course-deck .slide {
  padding: 70px 92px 76px;
}

.course-deck .kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--accent-2);
}

.course-deck .h1 {
  margin: 0 0 20px;
  max-width: 980px;
  font-size: clamp(58px, 7vw, 104px);
  line-height: 1.02;
  letter-spacing: -.045em;
}

.course-deck .h2 {
  margin: 0 0 20px;
  max-width: 1460px;
  font-size: clamp(34px, 3.6vw, 52px);
  line-height: 1.14;
  letter-spacing: -.035em;
}

.course-deck .h3,
.course-deck h3 {
  margin: 0 0 10px;
  font-size: 25px;
  line-height: 1.2;
}

.course-deck .lede {
  max-width: 900px;
  font-size: 22px;
  line-height: 1.5;
  color: var(--text-2);
}

.course-deck .accent {
  color: var(--accent-2);
}

.course-deck .mono,
.course-deck code,
.course-deck pre {
  font-family: var(--font-mono);
}

.course-deck .mt-l { margin-top: 26px; }
.course-deck .mt-m { margin-top: 18px; }

.course-deck .pill {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.course-deck .deck-header,
.course-deck .global-footer {
  z-index: 40;
  font-family: var(--font-mono);
}

.course-deck .global-footer {
  position: fixed;
  left: 40px;
  right: 40px;
  bottom: 18px;
}

.course-deck .theme-indicator { color: var(--accent-2); }
.course-deck .shortcuts { opacity: .72; }

/* Cover */
.course-deck .cover-slide {
  justify-content: center;
}

.course-deck .cover-meta {
  display: flex;
  gap: 10px;
  margin-top: 25px;
}

.course-deck .cover-equation {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 42px;
  padding: 18px 22px;
  width: fit-content;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  font-size: 16px;
}

.course-deck .cover-equation b { color: var(--text-3); }
.course-deck .cover-equation strong { color: var(--accent-2); }

/* Agenda */
.course-deck .agenda-grid { max-width: 1100px; }

.course-deck .agenda-row {
  display: grid;
  grid-template-columns: 54px 1fr 110px;
  gap: 16px;
  align-items: center;
  margin-bottom: 9px;
  padding: 13px 18px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.course-deck .agenda-row .num {
  font-family: var(--font-mono);
  color: var(--accent-2);
  font-weight: 800;
}

.course-deck .agenda-row .t { font-size: 17px; font-weight: 650; }
.course-deck .agenda-row .d { text-align: right; font-family: var(--font-mono); font-size: 12px; color: var(--text-3); }

/* Shared lists and arrows */
.course-deck .clean-list {
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.course-deck .clean-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-2);
}

.course-deck .clean-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-2);
}

.course-deck .clean-list.compact { gap: 5px; }
.course-deck .clean-list.compact li { font-size: 14px; }
.course-deck .flow-arrow,
.course-deck .down-arrow,
.course-deck .arch-arrow,
.course-deck .plus-sign {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 800;
}

/* Model vs Agent */
.course-deck .two-layer {
  display: grid;
  grid-template-columns: 1fr 72px 1fr;
  align-items: stretch;
  max-width: 1100px;
}

.course-deck .layer-card {
  position: relative;
  min-height: 270px;
  padding: 26px 30px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.course-deck .layer-card.featured {
  border-width: 2px;
  background: color-mix(in srgb, var(--accent-2) 8%, var(--surface));
}

.course-deck .layer-index {
  position: absolute;
  top: 16px;
  right: 18px;
  color: var(--text-3);
  font-family: var(--font-mono);
}

.course-deck .layer-tag {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  background: var(--surface-2);
  color: var(--accent-2);
  font-size: 13px;
}

.course-deck .thesis {
  display: flex;
  gap: 18px;
  align-items: center;
  width: fit-content;
  padding: 13px 18px;
  border-left: 4px solid var(--accent-2);
  background: var(--surface-2);
  font-size: 17px;
}

.course-deck .thesis span { color: var(--text-3); }

/* Agent loop */
.course-deck .loop-flow {
  display: grid;
  grid-template-columns: 1fr 38px 1fr 38px 1fr 38px 1fr 38px 1fr;
  align-items: center;
}

.course-deck .flow-node {
  min-height: 155px;
  padding: 20px 16px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  text-align: center;
}

.course-deck .flow-node > span {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin: 0 auto 14px;
  border: 1px solid var(--accent-2);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-weight: 800;
}

.course-deck .flow-node b { display: block; font-size: 17px; }
.course-deck .flow-node small { display: block; margin-top: 7px; color: var(--text-3); font-size: 12px; }

.course-deck .feedback-line,
.course-deck .example-strip,
.course-deck .trace-timeline,
.course-deck .debug-loop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-family: var(--font-mono);
}

.course-deck .feedback-line { margin-top: 18px; color: var(--text-2); }
.course-deck .feedback-line b { color: var(--accent-2); font-size: 24px; }

.course-deck .example-strip {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  padding: 10px 18px;
  border: 1px dashed var(--border-strong);
  background: var(--surface);
  font-size: 13px;
}

/* Tool anatomy */
.course-deck .anatomy-grid {
  display: grid;
  grid-template-columns: 1fr 170px 1fr;
  align-items: center;
  max-width: 1120px;
}

.course-deck .code-panel {
  overflow: hidden;
  min-height: 360px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--bg-soft) 92%, var(--surface));
}

.course-deck .code-title {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.course-deck .code-panel pre {
  margin: 0;
  padding: 20px 22px;
  white-space: pre-wrap;
  color: var(--text-1);
  font-size: 14px;
  line-height: 1.58;
}

.course-deck .result-note {
  margin: 2px 22px 20px;
  padding: 9px 12px;
  border-left: 3px solid var(--accent-2);
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 13px;
}

.course-deck .anatomy-center {
  display: grid;
  gap: 8px;
  text-align: center;
  color: var(--text-3);
  font-size: 12px;
}

.course-deck .anatomy-center b {
  padding: 12px;
  border: 1px solid var(--accent-2);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 18px;
}

/* MCP bridge */
.course-deck .bridge {
  display: grid;
  grid-template-columns: 290px 1fr 390px;
  align-items: center;
  min-height: 350px;
}

.course-deck .bridge-side {
  padding: 30px;
  border: 2px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .side-label,
.course-deck .arch-label {
  display: block;
  margin-bottom: 12px;
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
}

.course-deck .bridge-side strong { display: block; font-size: 27px; line-height: 1.35; }
.course-deck .bridge-side small { display: block; margin-top: 18px; color: var(--text-3); line-height: 1.5; }

.course-deck .bridge-core {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0;
}

.course-deck .bridge-core p {
  grid-column: 1 / -1;
  margin: 14px 0 0;
  text-align: center;
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 12px;
}

.course-deck .bridge-line { height: 2px; background: var(--accent-2); }
.course-deck .bridge-badge {
  display: grid;
  place-items: center;
  width: 104px;
  height: 104px;
  border: 2px solid var(--accent-2);
  background: var(--bg);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 900;
}

.course-deck .bridge-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.course-deck .tool-chip {
  padding: 18px 10px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  text-align: center;
  font-size: 14px;
  font-weight: 700;
}

.course-deck .quote-block,
.course-deck .closing-quote {
  padding: 14px 20px;
  border-left: 4px solid var(--accent-2);
  background: var(--surface-2);
  color: var(--text-1);
  font-size: 17px;
  font-weight: 650;
}

/* Schema comparison */
.course-deck .compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1120px;
}

.course-deck .compare-card {
  padding: 24px 26px 20px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .bad-card { border-top: 5px solid var(--bad); }
.course-deck .good-card { border-top: 5px solid var(--good); }

.course-deck .compare-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  font-size: 20px;
  font-weight: 800;
}

.course-deck .compare-head b { color: var(--text-3); font-family: var(--font-mono); font-size: 12px; }

.course-deck .param-row {
  display: grid;
  grid-template-columns: 135px 1fr;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.course-deck .param-row code { color: var(--accent-2); font-weight: 700; }
.course-deck .param-row span { color: var(--text-2); font-size: 14px; }
.course-deck .compare-card > p { margin: 18px 0 0; color: var(--text-2); font-size: 14px; }

.course-deck .design-principles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.course-deck .design-principles span {
  padding: 10px 12px;
  border: 1px dashed var(--border-strong);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}

/* Patent case */
.course-deck .case-pipeline { max-width: 1100px; }

.course-deck .request-box,
.course-deck .arch-user,
.course-deck .arch-output {
  padding: 16px 22px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  text-align: center;
}

.course-deck .request-box span,
.course-deck .arch-user span,
.course-deck .arch-output span {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.course-deck .request-box strong { font-size: 20px; }
.course-deck .down-arrow { height: 34px; font-size: 20px; }

.course-deck .extract-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.course-deck .extract-grid > div,
.course-deck .response-path > div {
  padding: 17px;
  border: 1px dashed var(--border-strong);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.course-deck .extract-grid small,
.course-deck .response-path span {
  display: block;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 11px;
}

.course-deck .extract-grid b { display: block; margin-top: 4px; font-size: 16px; }

.course-deck .response-path {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  align-items: center;
}

.course-deck .response-path b { font-size: 15px; }
.course-deck .branch-arrow { border: 0 !important; background: transparent !important; color: var(--accent-2); text-align: center; font-size: 24px; }

.course-deck .lesson-bar,
.course-deck .deliverable {
  padding: 12px 18px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--accent-2) 7%, var(--surface));
  font-size: 14px;
}

/* Rules */
.course-deck .rule-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.course-deck .rule-card {
  min-height: 235px;
  padding: 23px 22px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.course-deck .rule-card > span {
  display: block;
  margin-bottom: 40px;
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 13px;
}

.course-deck .rule-card h4 { margin: 0 0 10px; font-size: 17px; }
.course-deck .rule-card p { margin: 0; color: var(--text-2); font-size: 13px; line-height: 1.55; }
.course-deck .trace-timeline { padding: 11px; border: 1px dashed var(--border-strong); font-size: 13px; }
.course-deck .trace-timeline b { color: var(--accent-2); }

/* Context overflow */
.course-deck .context-demo {
  display: grid;
  grid-template-columns: 280px 1fr 300px;
  gap: 26px;
  align-items: center;
}

.course-deck .file-monolith,
.course-deck .smart-read {
  min-height: 280px;
  padding: 24px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .file-monolith {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.course-deck .file-icon,
.course-deck .resource-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border: 2px solid var(--accent-2);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-weight: 900;
}

.course-deck .file-monolith strong { font-size: 18px; }
.course-deck .file-monolith small { margin-top: 10px; color: var(--text-3); }

.course-deck .meter-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.course-deck .meter-track {
  height: 46px;
  padding: 4px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .meter-fill {
  display: block;
  width: 93%;
  height: 100%;
  background: repeating-linear-gradient(135deg, var(--bad) 0 8px, color-mix(in srgb, var(--bad) 62%, transparent) 8px 16px);
}

.course-deck .meter-notes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
  margin-top: 10px;
  text-align: center;
  font-size: 10px;
  color: var(--text-3);
}

.course-deck .danger-text { color: var(--bad); font-weight: 800; }
.course-deck .smart-read > strong { display: block; font-size: 20px; }

/* Context ring */
.course-deck .context-ring {
  position: relative;
  width: 760px;
  height: 330px;
  margin-left: auto;
  margin-right: auto;
}

.course-deck .ring-core {
  position: absolute;
  inset: 92px 255px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 2px solid var(--accent-2);
  background: var(--bg);
  text-align: center;
  z-index: 2;
}

.course-deck .ring-core span { color: var(--accent-2); font-family: var(--font-mono); font-size: 12px; }
.course-deck .ring-core strong { margin-top: 6px; font-size: 18px; }

.course-deck .ring-item {
  position: absolute;
  width: 180px;
  padding: 16px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  text-align: center;
}

.course-deck .ring-item b { display: block; color: var(--accent-2); font-size: 18px; }
.course-deck .ring-item small { color: var(--text-3); }
.course-deck .ring-a { top: 0; left: 290px; }
.course-deck .ring-b { top: 125px; left: 0; }
.course-deck .ring-c { top: 125px; right: 0; }
.course-deck .ring-d { bottom: 0; left: 290px; }

.course-deck .context-ring::before,
.course-deck .context-ring::after {
  content: "";
  position: absolute;
  inset: 68px 140px;
  border: 1px dashed var(--border-strong);
}

.course-deck .context-ring::after {
  inset: 42px 210px;
  border-color: var(--accent-2);
  transform: rotate(45deg);
}

.course-deck .context-principle {
  display: flex;
  justify-content: center;
  gap: 15px;
  align-items: center;
}

.course-deck .context-principle span,
.course-deck .context-principle b { color: var(--text-3); }
.course-deck .context-principle del { color: var(--bad); }
.course-deck .context-principle strong { color: var(--accent-2); font-size: 19px; }

/* Skill overview */
.course-deck .skill-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.course-deck .skill-stack article {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .skill-stack article > span {
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
}

.course-deck .skill-stack h3 { margin-top: 40px; }
.course-deck .skill-stack p { color: var(--text-2); font-size: 14px; }

.course-deck .skill-message {
  display: grid;
  grid-template-columns: 1fr 70px 1fr;
  align-items: center;
}

.course-deck .skill-before,
.course-deck .skill-after {
  padding: 12px 18px;
  border: 1px dashed var(--border-strong);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.course-deck .skill-before span,
.course-deck .skill-after span { color: var(--accent-2); font-family: var(--font-mono); font-size: 12px; }
.course-deck .skill-before p,
.course-deck .skill-after p { margin: 4px 0 0; font-size: 14px; }

/* Skill tree */
.course-deck .tree-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 1120px;
}

.course-deck .file-tree,
.course-deck .skill-md-card {
  min-height: 430px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
}

.course-deck .tree-root,
.course-deck .yaml-head {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-weight: 800;
}

.course-deck .tree-line {
  display: grid;
  grid-template-columns: 40px 1fr 120px;
  gap: 8px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 13px;
}

.course-deck .tree-line.indent { padding-left: 38px; }
.course-deck .tree-line em { color: var(--text-3); font-family: var(--font-sans); font-style: normal; }
.course-deck .tree-line.main-file b { color: var(--accent-2); }
.course-deck .skill-md-card pre { margin: 0; padding: 18px 22px; white-space: pre-wrap; font-size: 13px; line-height: 1.55; }

/* Progressive loading */
.course-deck .progressive {
  display: grid;
  grid-template-columns: 1fr 120px 1fr 120px 1fr;
  align-items: stretch;
}

.course-deck .level {
  position: relative;
  min-height: 270px;
  padding: 26px 22px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .level-2 { border-width: 2px; }
.course-deck .level-3 { background: color-mix(in srgb, var(--accent-2) 7%, var(--surface)); }
.course-deck .level-num { color: var(--accent-2); font-family: var(--font-mono); font-size: 13px; }
.course-deck .level h3 { margin-top: 45px; }
.course-deck .level p { font-size: 14px; }
.course-deck .level small { color: var(--text-3); }
.course-deck .level-arrow { display: grid; place-items: center; text-align: center; color: var(--accent-2); font-family: var(--font-mono); font-size: 12px; }

.course-deck .budget-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.course-deck .budget-visual > div {
  display: grid;
  grid-template-columns: 110px 1fr 60px;
  gap: 10px;
  align-items: center;
  font-size: 12px;
}

.course-deck .budget-visual i { display: block; height: 14px; border: 1px solid var(--border-strong); }
.course-deck .budget-full { background: var(--bad); }
.course-deck .budget-smart { background: linear-gradient(90deg, var(--good) 0 36%, transparent 36%); }
.course-deck .budget-visual b { color: var(--text-3); }

/* Docs vs scripts */
.course-deck .resource-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1050px;
  margin-left: auto;
  margin-right: auto;
}

.course-deck .resource-card {
  min-height: 370px;
  padding: 24px 30px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  text-align: center;
}

.course-deck .resource-card.featured { border-width: 2px; background: color-mix(in srgb, var(--accent-2) 7%, var(--surface)); }
.course-deck .resource-card > p { color: var(--text-2); font-size: 14px; }
.course-deck .resource-card .clean-list { width: fit-content; margin: 15px auto; text-align: left; }
.course-deck .cost-tag { margin-top: 18px; padding: 7px 10px; background: var(--surface-2); color: var(--accent-2); font-family: var(--font-mono); font-size: 11px; }

/* MCP vs Skill matrix */
.course-deck .matrix {
  display: grid;
  grid-template-columns: 175px 1fr 1fr;
  border-top: 1px solid var(--border-strong);
  border-left: 1px solid var(--border-strong);
}

.course-deck .matrix > div {
  padding: 15px 18px;
  border-right: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 93%, transparent);
  font-size: 14px;
}

.course-deck .matrix-head {
  background: var(--surface-2) !important;
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-size: 18px !important;
  font-weight: 900;
  text-align: center;
}

.course-deck .matrix-key { font-weight: 800; }

.course-deck .synergy {
  display: grid;
  grid-template-columns: 150px 30px 1fr;
  gap: 7px 12px;
  align-items: center;
  width: fit-content;
  padding: 13px 18px;
  border-left: 4px solid var(--accent-2);
  background: var(--surface-2);
  font-size: 13px;
}

.course-deck .synergy span { font-family: var(--font-mono); }
.course-deck .synergy em { color: var(--text-2); font-style: normal; }

/* Architecture */
.course-deck .architecture { max-width: 1120px; }
.course-deck .arch-user strong,
.course-deck .arch-output strong { font-size: 15px; }

.course-deck .arch-skill {
  padding: 16px 20px 20px;
  border: 2px solid var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 6%, var(--surface));
}

.course-deck .arch-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.course-deck .arch-steps b {
  padding: 10px 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  text-align: center;
  font-size: 12px;
}

.course-deck .arch-arrow { height: 26px; font-size: 16px; }
.course-deck .arch-arrow.split { letter-spacing: 13em; overflow: hidden; color: var(--accent-2); }

.course-deck .arch-tools {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.course-deck .arch-tools > div {
  padding: 14px 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  text-align: center;
}

.course-deck .arch-tools span { display: block; color: var(--accent-2); font-family: var(--font-mono); font-size: 10px; }
.course-deck .arch-tools b { font-size: 14px; }

/* Build steps */
.course-deck .build-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.course-deck .build-steps article {
  display: grid;
  grid-template-columns: 45px 1fr;
  column-gap: 14px;
  padding: 18px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 93%, transparent);
}

.course-deck .build-steps span { grid-row: 1 / 3; color: var(--accent-2); font-family: var(--font-mono); font-weight: 900; }
.course-deck .build-steps b { font-size: 16px; }
.course-deck .build-steps p { margin: 5px 0 0; color: var(--text-2); font-size: 12px; }
.course-deck .debug-loop { padding: 12px; border: 1px dashed var(--border-strong); font-size: 12px; }
.course-deck .debug-loop b { color: var(--accent-2); }

/* Exercise */
.course-deck .exercise-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 30px;
  align-items: stretch;
}

.course-deck .exercise-brief {
  padding: 28px;
  border: 2px solid var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 7%, var(--surface));
}

.course-deck .exercise-time { color: var(--accent-2); font-family: var(--font-mono); font-weight: 900; letter-spacing: .12em; }
.course-deck .exercise-brief h3 { margin-top: 70px; }
.course-deck .exercise-brief p { color: var(--text-2); font-size: 14px; }

.course-deck .exercise-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-deck .exercise-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .exercise-list li > span { color: var(--accent-2); font-family: var(--font-mono); font-size: 19px; font-weight: 900; }
.course-deck .exercise-list b { font-size: 15px; }
.course-deck .exercise-list p { margin: 3px 0 0; color: var(--text-2); font-size: 12px; }

/* Closing */
.course-deck .close-slide { justify-content: center; }

.course-deck .closing-chain {
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr 40px 1fr;
  align-items: center;
}

.course-deck .closing-chain > div:not(.flow-arrow) {
  min-height: 190px;
  padding: 24px 18px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.course-deck .closing-chain span { color: var(--accent-2); font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; }
.course-deck .closing-chain b { display: block; margin-top: 42px; font-size: 22px; }
.course-deck .closing-chain small { display: block; margin-top: 9px; color: var(--text-3); line-height: 1.45; }

.course-deck .closing-quote {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.course-deck .qa-block {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-top: 30px;
}

.course-deck .qa-block strong { font-size: 42px; color: var(--accent-2); }
.course-deck .qa-block span { color: var(--text-2); }

/* Notes remain presenter-only. */
.course-deck .notes { display: none !important; }

/* Scale gracefully on smaller screens while preserving the 16:9 composition. */
@media (max-width: 1100px) {
  .course-deck .slide { padding-left: 58px; padding-right: 58px; }
  .course-deck .h2 { font-size: 38px; }
  .course-deck .rule-card { min-height: 210px; padding: 18px; }
  .course-deck .bridge { grid-template-columns: 240px 1fr 320px; }
}