/* ============================================================
   slide-base.css v5 — Type Scale 통일판
   - Min font: 18px (모든 본문/라벨)
   - Step 1.5x: 28px (강조 본문)
   - Step ~1.3x: 36 → 48 → 64 → 72 (점진)
   - 좌측 강조선 0개
   ============================================================ */

:root {
  /* Slide-specific type scale (v7 — GSHR 가독성 ↑ · 모든 텍스트 최소 22px+) */
  --fs-chrome: 18px;       /* footer fine print */
  --fs-min: 22px;          /* min for content (label, eyebrow, caption) */
  --fs-body: 28px;         /* default body */
  --fs-strong: 36px;       /* emphasis body */
  --fs-quote: 44px;        /* compare quote / result */
  --fs-title: 54px;        /* case title, stage name */
  --fs-governing: 64px;    /* slide governing message */
  --fs-numeric: 80px;      /* big numeric marker */
  --fs-stat: 88px;         /* stat number (max content size) */
}

/* ---------- Material Symbols ---------- */
.material-symbols-outlined {
  font-family: "Material Symbols Outlined";
  font-weight: normal;
  font-style: normal;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-feature-settings: "liga";
  font-feature-settings: "liga";
  -webkit-font-smoothing: antialiased;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

/* ============================================================
   Slide Canvas — 1920×1080 / 3-zone grid
   ============================================================ */
.slide {
  width: 1920px;
  height: 1080px;
  background: var(--md-surface);
  display: grid;
  grid-template-rows: auto 1fr auto;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

/* ============================================================
   ZONE 1 — Header
   ============================================================ */
.slide-header-zone {
  padding: 56px 80px 36px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: relative;
}

.slide-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.slide-meta-id { display: none; }
.slide-meta-line { display: none; }

.slide-meta-label {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-primary);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin: 0;
}

.slide-meta-label::before {
  content: "";
  width: 32px;
  height: 4px;
  background: var(--md-primary);
  border-radius: 2px;
}

.slide-meta-line {
  display: none;
}

.slide-meta-id {
  font: 600 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 1.4px;
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.slide-governing {
  font: 300 var(--fs-governing)/1.28 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -1.4px;
  margin: 0;
  max-width: 1640px;
}

.slide-governing strong,
.slide-governing em {
  font-style: normal;
  color: var(--md-primary);
  font-weight: 800;
}

/* ============================================================
   ZONE 2 — Body
   ============================================================ */
.slide-body-zone {
  padding: 48px 80px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  position: relative;
}

/* ============================================================
   ZONE 3 — Footer
   ============================================================ */
.slide-footer-zone {
  padding: 18px 80px;
  background: var(--md-surface-container-low);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slide-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 600 18px/1 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 1.2px;
  margin: 0;
}

.slide-brand::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--md-primary);
  border-radius: 50%;
}

.slide-page {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.slide-page-num {
  font: 700 18px/1 var(--font-ko-body);
  color: var(--md-on-surface);
  letter-spacing: 0.4px;
}

.slide-page-total {
  font: 500 var(--fs-chrome)/1 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.4px;
}

/* ============================================================
   Inline 강조 elements
   ============================================================ */
.mark-hi {
  background: linear-gradient(180deg, transparent 55%, var(--md-tertiary-container) 55%);
  padding: 0 4px;
  font-weight: 600;
  color: var(--md-on-surface);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.mark-hi-primary {
  background: linear-gradient(180deg, transparent 55%, var(--md-primary-container) 55%);
  padding: 0 4px;
  font-weight: 600;
  color: var(--md-on-surface);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.pill-primary {
  display: inline-block;
  padding: 3px 12px;
  background: var(--md-primary);
  color: var(--md-on-primary);
  border-radius: 9999px;
  font-size: 0.85em;
  font-weight: 700;
  letter-spacing: 0.4px;
  vertical-align: middle;
  white-space: nowrap;
}

.pill-outline {
  display: inline-block;
  padding: 2px 11px;
  border: 1.5px solid var(--md-primary);
  color: var(--md-primary);
  border-radius: 9999px;
  font-size: 0.85em;
  font-weight: 700;
  letter-spacing: 0.4px;
  vertical-align: middle;
  white-space: nowrap;
  background: transparent;
}

.kw {
  color: var(--md-primary);
  font-weight: 700;
}

/* ============================================================
   Callout (좌측 바 없음)
   ============================================================ */
.callout {
  margin-top: 20px;
  padding: 22px 26px;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: 16px;
  font: 500 var(--fs-body)/1.55 var(--font-ko-body);
  letter-spacing: 0.1px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.callout::before {
  content: "?";
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--md-primary);
  color: var(--md-on-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 800 18px/1 var(--font-ko-body);
}

/* ============================================================
   Memo Note (시행착오 기록)
   ============================================================ */
.memo-note {
  position: relative;
  background: var(--md-surface-container-lowest);
  border: 1px solid var(--md-outline-variant);
  border-radius: 6px;
  padding: 22px 26px;
  margin-top: 24px;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 8px 20px rgba(0, 0, 0, 0.04);
}

.memo-note::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 28px;
  width: 56px;
  height: 18px;
  background: var(--md-primary-container);
  opacity: 0.9;
  border-radius: 2px;
  transform: rotate(-2deg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.memo-body {
  font: 500 var(--fs-body)/1.65 var(--font-ko-body);
  color: var(--md-on-surface);
  letter-spacing: 0.05px;
  margin: 0;
  padding-top: 6px;
}

/* ============================================================
   Layout A — Case Hero (이미지 / 텍스트)
   ============================================================ */
.layout-a {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  flex: 1;
  align-items: center;
  min-height: 0;
}

.layout-a-mirror {
  grid-template-columns: 0.9fr 1.1fr;
}

.case-figure-block {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

.case-figure {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 100%;
  background: color-mix(in srgb, var(--md-primary) 4%, var(--md-surface-container-lowest));
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 6%, transparent);
  outline-offset: -1px;
}

.case-figure-bg {
  position: absolute;
  inset: 32px;
  background: var(--md-primary-container);
  border-radius: 18px;
  opacity: 0.45;
}

.case-figure-icon {
  position: relative;
  z-index: 1;
  font-size: 140px;
  color: var(--md-primary);
  opacity: 0.55;
}

.case-figure-tag {
  position: absolute;
  top: 24px;
  left: 24px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-on-primary);
  background: var(--md-primary);
  padding: 10px 16px;
  border-radius: 9999px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  z-index: 3;
}

.case-figure-caption {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  font: 500 var(--fs-min)/1.5 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.2px;
  margin: 0;
  z-index: 3;
}

.case-detail {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.case-num-mark {
  display: inline-flex;
  align-items: baseline;
  gap: 18px;
  margin: 0;
}

.case-num-mark .num {
  font: 700 var(--fs-numeric)/0.95 var(--font-ko-display);
  color: var(--md-primary);
  letter-spacing: -2px;
  font-variant-numeric: tabular-nums;
  opacity: 0.85;
}

.case-num-mark .lbl {
  font: 600 var(--fs-min)/1.4 var(--font-ko-body);
  color: var(--md-outline);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  white-space: nowrap;
}

.case-title {
  font: 700 var(--fs-title)/1.2 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -1px;
  margin: 0;
  white-space: nowrap;
}

.case-context {
  font: 400 var(--fs-body)/1.65 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.1px;
  margin: 0;
  max-width: 760px;
}

/* Context list (대상/목적/활동/산출) */
.case-context-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.ctx-row {
  display: grid;
  grid-template-columns: 14px 70px 1fr;
  gap: 18px;
  align-items: center;
}

.ctx-bullet {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--md-primary);
  display: inline-block;
  position: relative;
  box-shadow: 0 0 0 4px var(--md-primary-container);
}

.ctx-row:nth-child(2) .ctx-bullet {
  background: var(--md-tertiary);
  box-shadow: 0 0 0 4px var(--md-tertiary-container);
}

.ctx-row:nth-child(3) .ctx-bullet {
  background: var(--md-secondary);
  box-shadow: 0 0 0 4px var(--md-secondary-container);
}

.ctx-row:nth-child(4) .ctx-bullet {
  background: var(--md-primary);
  box-shadow: 0 0 0 4px var(--md-primary-container);
  opacity: 0.7;
}

.ctx-label {
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  margin: 0;
  position: relative;
}

.ctx-label::after {
  content: ":";
  position: absolute;
  right: -12px;
  color: var(--md-outline);
  font-weight: 500;
}

.ctx-value {
  font: 500 var(--fs-body)/1.45 var(--font-ko-body);
  color: var(--md-on-surface);
  letter-spacing: 0.1px;
  margin: 0;
}

/* ============================================================
   Layout B — Compare Cards
   ============================================================ */
.layout-b {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-height: 0;
}

.insight-numeral {
  position: absolute;
  top: -32px;
  right: -16px;
  font: 800 320px/0.85 var(--font-ko-display);
  color: var(--md-primary);
  opacity: 0.05;
  letter-spacing: -16px;
  font-variant-numeric: tabular-nums;
  user-select: none;
  pointer-events: none;
  z-index: 0;
}

.compare-stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  flex: 1;
  align-items: stretch;
  min-height: 0;
}

.compare-card {
  padding: 44px 44px 40px;
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 20px;
  position: relative;
}

.compare-card.muted {
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  color: var(--md-on-surface);
  box-shadow: none;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.compare-card.signal {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  box-shadow: 0 12px 32px rgba(0, 97, 164, 0.12);
}

.compare-card-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.8px;
  text-transform: uppercase;
  margin: 0;
  opacity: 0.85;
}

.compare-card-eyebrow .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}

.compare-card.signal .compare-card-eyebrow::after {
  content: "★";
  margin-left: 4px;
  font-size: 18px;
}

.compare-card-quote {
  font: 700 var(--fs-quote)/1.3 var(--font-ko-display);
  letter-spacing: -0.7px;
  margin: 0;
}

.compare-card-eq {
  font: 600 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  opacity: 0.55;
  margin: 0;
}

.compare-card-result {
  font: 800 var(--fs-quote)/1.25 var(--font-ko-display);
  letter-spacing: -0.6px;
  margin: 0;
}

.compare-card-meta {
  font: 500 var(--fs-body)/1.55 var(--font-ko-body);
  margin: 4px 0 0;
  opacity: 0.78;
  letter-spacing: 0.1px;
  max-width: 440px;
}

.compare-arrow {
  align-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 0 8px;
}

.compare-arrow-icon {
  font: 700 56px/1 var(--font-ko-display);
  color: var(--md-primary);
}

.compare-arrow-label {
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  white-space: nowrap;
}

.compare-cross {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-self: flex-end;
  align-items: center;
  gap: 10px;
  font: 600 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-tertiary);
  letter-spacing: 0.5px;
  margin: 0;
  padding: 14px 22px;
  background: var(--md-tertiary-container);
  border-radius: 9999px;
}

.compare-cross::before {
  content: "→";
  font-weight: 800;
}

/* ============================================================
   Chart Mock (데이터 viz placeholder)
   ============================================================ */
.chart-mock {
  position: relative;
  z-index: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 40px 32px;
}

.chart-mock-title {
  font: 700 var(--fs-min)/1 "Roboto Mono", ui-monospace, monospace;
  color: var(--md-on-surface-variant);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin: 0 0 10px;
}

.chart-bar {
  display: grid;
  grid-template-columns: 110px 1fr 56px;
  gap: 14px;
  align-items: center;
}

.chart-bar-label {
  font: 600 var(--fs-min)/1.2 var(--font-ko-body);
  color: var(--md-on-surface);
  letter-spacing: 0.2px;
}

.chart-bar-track {
  height: 18px;
  background: var(--md-surface-container);
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
}

.chart-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--w, 50%);
  background: var(--md-primary);
  border-radius: 9999px;
  opacity: 0.85;
}

.chart-bar-fill[data-tone="muted"] {
  background: var(--md-outline);
  opacity: 0.5;
}

.chart-bar-fill[data-tone="signal"] {
  background: var(--md-tertiary);
  opacity: 1;
}

.chart-bar-value {
  font: 700 var(--fs-min)/1 "Roboto Mono", monospace;
  color: var(--md-on-surface-variant);
  letter-spacing: 0.3px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.chart-bar.is-insight .chart-bar-label {
  color: var(--md-tertiary);
}

.chart-bar.is-insight .chart-bar-label::after {
  content: " ★";
  font-size: 0.85em;
}

.chart-bar.is-insight .chart-bar-value {
  color: var(--md-tertiary);
  font-weight: 800;
}

/* ============================================================
   Layout D — Stat Split
   ============================================================ */
.layout-d {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 36px;
  min-height: 0;
}

.stat-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: stretch;
  position: relative;
  z-index: 1;
}

.stat-block {
  padding: 40px 44px 36px;
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 14px;
}

.stat-block.muted {
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  color: var(--md-on-surface);
  box-shadow: none;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.stat-block.signal {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  box-shadow: 0 12px 32px rgba(0, 97, 164, 0.10);
}

.stat-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.8px;
  text-transform: uppercase;
  opacity: 0.75;
  margin: 0;
}

.stat-label::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.55;
}

.stat-num {
  font: 800 var(--fs-stat)/1 var(--font-ko-display);
  letter-spacing: -2.5px;
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.stat-num .unit {
  font-size: 0.45em;
  font-weight: 600;
  letter-spacing: -1px;
  margin-left: 6px;
  opacity: 0.6;
}

.stat-meta {
  font: 500 var(--fs-body)/1.5 var(--font-ko-body);
  opacity: 0.8;
  margin: 0;
  letter-spacing: 0.1px;
  max-width: 380px;
}

.stat-arrow {
  align-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 0 4px;
}

.stat-arrow-icon {
  font: 700 56px/1 var(--font-ko-display);
  color: var(--md-primary);
}

.stat-arrow-label {
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  white-space: nowrap;
}

.stat-verdict {
  font: 700 var(--fs-strong)/1.55 var(--font-ko-display);
  color: var(--md-on-tertiary-container);
  background: var(--md-tertiary-container);
  letter-spacing: -0.3px;
  margin: 24px auto 0;
  max-width: 1400px;
  padding: 28px 36px;
  border-radius: 20px;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* ============================================================
   Layout H — Selection Grid (30→5 시각화)
   ============================================================ */
.layout-h {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  flex: 1;
  align-items: center;
  min-height: 0;
}

.selection-viz {
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  border-radius: 28px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.selection-viz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font: 700 var(--fs-min)/1 "Roboto Mono", ui-monospace, monospace;
  color: var(--md-on-surface-variant);
  letter-spacing: 1.6px;
  text-transform: uppercase;
}

.selection-viz-header .total {
  color: var(--md-on-surface-variant);
}

.selection-viz-header .signal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--md-primary);
}

.selection-viz-header .signal::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--md-primary);
}

.selection-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 14px;
}

.dot {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: var(--md-outline-variant);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dot.is-noise {
  background: var(--md-outline-variant);
  opacity: 0.5;
}

.dot.is-signal {
  background: var(--md-primary);
  box-shadow: 0 3px 12px rgba(0, 97, 164, 0.32);
  transform: scale(1.15);
}

.dot.is-signal::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--md-primary);
  opacity: 0.32;
}

.selection-summary {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.selection-stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  font: 800 var(--fs-stat)/1 var(--font-ko-display);
  letter-spacing: -3px;
  color: var(--md-primary);
  font-variant-numeric: tabular-nums;
}

.selection-stat .total {
  color: var(--md-on-surface-variant);
  opacity: 0.6;
  font-size: 0.55em;
  font-weight: 700;
}

.selection-stat .pct {
  font: 700 var(--fs-min)/1 "Roboto Mono", monospace;
  letter-spacing: 1px;
  color: var(--md-on-surface-variant);
  margin-left: auto;
}

.selection-headline {
  font: 700 var(--fs-strong)/1.35 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -0.6px;
  margin: 0;
}

.selection-headline strong {
  color: var(--md-primary);
}

.selection-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.selection-list li {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 14px 20px;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: 14px;
}

.selection-list .rank {
  font: 800 var(--fs-min)/1 "Roboto Mono", monospace;
  color: var(--md-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}

.selection-list .name {
  font: 700 var(--fs-body)/1.2 var(--font-ko-body);
  letter-spacing: -0.2px;
}

.selection-list .freq {
  font: 600 var(--fs-min)/1 "Roboto Mono", monospace;
  opacity: 0.65;
  font-variant-numeric: tabular-nums;
}

.selection-foot {
  font: 500 var(--fs-min)/1.5 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.05px;
  margin: 0;
  padding-top: 4px;
}

/* ============================================================
   S01 표지 — 다른 슬라이드와 동일한 3-zone 구조 사용
   header zone (meta + governing 큰 사이즈) + body zone (sub + speaker chip) + footer
   ============================================================ */

/* Cover-specific governing size override */
.slide-governing.is-cover {
  /* 의도적으로 동일 스펙 유지 — Crystal 통일 요청 2026-05-06 */
}

/* Body for cover — sub + speaker pinned bottom */
.cover-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 36px;
}

.cover-sub {
  font: 500 28px/1.5 var(--font-ko-display);
  color: var(--md-on-surface-variant);
  letter-spacing: -0.4px;
  margin: 0;
  max-width: 1300px;
}

.cover-speaker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 24px;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: 9999px;
  align-self: flex-start;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin: 0;
}

.cover-speaker::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--md-primary);
  border-radius: 50%;
}

.cover-speaker .role {
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: none;
  padding-left: 14px;
  margin-left: 4px;
  border-left: 1px solid color-mix(in srgb, currentColor 30%, transparent);
  opacity: 0.85;
  font-size: 18px;
}

/* ============================================================
   Layout J — Message Hero (Quote / Question / Conclusion / Closing)
   ============================================================ */
.layout-message {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 32px;
  position: relative;
  max-width: 1500px;
}

.layout-message.is-centered {
  align-items: center;
  text-align: center;
  margin: 0 auto;
}

.message-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-primary);
  letter-spacing: 1.8px;
  text-transform: uppercase;
  margin: 0;
}

.message-eyebrow::before {
  content: "";
  width: 28px;
  height: 4px;
  background: var(--md-primary);
  border-radius: 2px;
}

.message-main {
  font: 800 80px/1.2 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -1.8px;
  margin: 0;
}

.message-main strong,
.message-main em {
  font-style: normal;
  color: var(--md-primary);
}

.message-sub {
  font: 500 var(--fs-strong)/1.5 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: -0.2px;
  margin: 0;
  max-width: 1300px;
}

.message-attrib {
  font: 600 var(--fs-min)/1.4 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  letter-spacing: 0.5px;
  margin: 16px 0 0;
}

/* Question variant — bigger font */
.layout-message.is-question .message-main {
  font-size: 64px;
  line-height: 1.3;
}

/* Conclusion variant — primary container background */
.message-block {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: 28px;
  padding: 56px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.message-block .message-main {
  color: var(--md-on-primary-container);
  font-size: 64px;
}

.message-block .message-main strong {
  color: var(--md-primary);
}

/* ============================================================
   Layout K — Divider (Dark Section transition)
   ============================================================ */
.slide.l-divider {
  background: var(--md-inverse-surface);
  grid-template-rows: 1fr auto;  /* header zone 없으니 body가 1fr */
}

.layout-divider {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 80px;
  gap: 36px;
  color: var(--md-inverse-on-surface);
}

.divider-act {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  color: var(--md-inverse-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0;
}

.divider-act::before {
  content: "";
  width: 40px;
  height: 4px;
  background: var(--md-inverse-primary);
  border-radius: 2px;
}

.divider-title {
  font: 800 96px/1.1 var(--font-ko-display);
  color: white;
  letter-spacing: -2px;
  margin: 0;
}

.divider-sub {
  font: 500 var(--fs-strong)/1.4 var(--font-ko-display);
  color: rgba(255,255,255,0.7);
  letter-spacing: -0.4px;
  margin: 0;
}

/* footer override — dark divider only */
.slide.l-divider .slide-footer-zone {
  background: rgba(0,0,0,0.18);
  border-top: 1px solid rgba(255,255,255,0.12);
}

.slide.l-divider .slide-brand,
.slide.l-divider .slide-page-num,
.slide.l-divider .slide-page-total {
  color: rgba(255,255,255,0.7);
}

.slide.l-divider .slide-brand::before {
  background: white;
}

/* Title slide footer — light theme normal */
.slide.l-title .slide-footer-zone {
  background: transparent;
  border-top: none;
}

/* ============================================================
   Layout L — N-Cards Row (3 cards horizontal)
   ============================================================ */
.layout-cards {
  display: grid;
  gap: 24px;
  flex: 1;
  align-items: stretch;
  min-height: 0;
}

.layout-cards.cards-3 { grid-template-columns: repeat(3, 1fr); }
.layout-cards.cards-2 { grid-template-columns: repeat(2, 1fr); }

.info-card {
  border-radius: 24px;
  padding: 36px 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
}

.info-card[data-tone="primary"] {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

.info-card[data-tone="tertiary"] {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
}

.info-card[data-tone="secondary"] {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

.info-card[data-tone="surface"] {
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  color: var(--md-on-surface);
  box-shadow: none;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.info-card-num {
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin: 0;
  opacity: 0.7;
}

.info-card-num strong {
  font: 800 32px/1 var(--font-ko-display);
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
  opacity: 1;
}

.info-card-title {
  font: 700 var(--fs-strong)/1.25 var(--font-ko-display);
  letter-spacing: -0.5px;
  margin: 0;
}

.info-card-body {
  font: 500 var(--fs-body)/1.55 var(--font-ko-body);
  margin: 0;
  opacity: 0.85;
  letter-spacing: 0.05px;
}

/* ============================================================
   Layout M — SplitBar (80/20 비율 bar)
   ============================================================ */
.layout-splitbar {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 40px;
}

.splitbar-track {
  display: flex;
  height: 120px;
  border-radius: 24px;
  overflow: hidden;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.splitbar-fill {
  display: flex;
  align-items: center;
  padding: 0 36px;
  gap: 18px;
}

.splitbar-fill.muted {
  flex: 80;
  background: var(--md-surface-container-low);
  color: var(--md-on-surface);
}

.splitbar-fill.signal {
  flex: 20;
  background: var(--md-primary);
  color: var(--md-on-primary);
}

.splitbar-pct {
  font: 800 56px/1 var(--font-ko-display);
  letter-spacing: -2px;
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.splitbar-label {
  font: 700 var(--fs-min)/1.3 var(--font-ko-body);
  letter-spacing: 0.5px;
  margin: 0;
  opacity: 0.85;
  text-transform: uppercase;
}

.splitbar-caption {
  font: 500 var(--fs-strong)/1.45 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -0.3px;
  margin: 0;
}

.splitbar-caption strong {
  color: var(--md-primary);
}

/* ============================================================
   Layout N — Curve (Dunning-Kruger SVG container)
   ============================================================ */
.layout-curve {
  flex: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: 0;
}

.curve-viz {
  position: relative;
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  border-radius: 28px;
  padding: 36px;
  height: 100%;
  display: flex;
  flex-direction: column;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.curve-svg {
  width: 100%;
  height: 100%;
  flex: 1;
}

.curve-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ============================================================
   Layout O — Trap Table (5 함정)
   ============================================================ */
.layout-trap {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.trap-table {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.trap-row {
  display: grid;
  grid-template-columns: 60px 1fr 1.4fr;
  gap: 28px;
  align-items: center;
  padding: 22px 28px;
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  border-radius: 16px;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 4%, transparent);
  outline-offset: -1px;
}

.trap-row.is-key {
  background: var(--md-primary-container);
  border-color: transparent;
}

.trap-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 800 var(--fs-min)/1 var(--font-ko-display);
  font-variant-numeric: tabular-nums;
}

.trap-row.is-key .trap-num {
  background: var(--md-primary);
  color: var(--md-on-primary);
}

.trap-name {
  font: 700 var(--fs-body)/1.3 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -0.3px;
  margin: 0;
}

.trap-row.is-key .trap-name {
  color: var(--md-on-primary-container);
}

.trap-signal {
  font: 500 var(--fs-min)/1.4 var(--font-ko-body);
  color: var(--md-on-surface-variant);
  margin: 0;
}

.trap-row.is-key .trap-signal {
  color: var(--md-on-primary-container);
  opacity: 0.85;
}

/* ============================================================
   Layout P — Persona Cards
   ============================================================ */
.layout-persona {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  flex: 1;
  align-items: stretch;
  min-height: 0;
}

.persona-card {
  border-radius: 28px;
  padding: 44px 44px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: left;
}

.persona-card[data-tone="primary"] {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  box-shadow: 0 12px 32px rgba(0, 97, 164, 0.10);
}

.persona-card[data-tone="muted"] {
  background: color-mix(in srgb, var(--md-primary) 3%, var(--md-surface-container-lowest));
  color: var(--md-on-surface);
  box-shadow: none;
  outline: 1px solid color-mix(in srgb, var(--md-on-surface) 5%, transparent);
  outline-offset: -1px;
}

.persona-icon-frame {
  width: 44px;
  height: 44px;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
}

.persona-icon-frame svg {
  width: 100%;
  height: 100%;
  color: currentColor;
  stroke-width: 1.5;
  opacity: 0.6;
}

.persona-icon-frame {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: rgba(255,255,255,0.5);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.persona-card[data-tone="muted"] .persona-icon-frame {
  background: var(--md-primary-container);
}

.persona-icon-frame svg {
  width: 36px;
  height: 36px;
  color: currentColor;
  stroke-width: 2;
}

.persona-tag {
  display: inline-block;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.8px;
  text-transform: uppercase;
  opacity: 0.75;
  margin: 0;
}

.persona-name {
  font: 700 var(--fs-quote)/1.2 var(--font-ko-display);
  letter-spacing: -1px;
  margin: 0;
}

.persona-need {
  font: 500 var(--fs-body)/1.55 var(--font-ko-body);
  margin: 0;
  opacity: 0.85;
}

.persona-need strong {
  font-weight: 700;
  opacity: 1;
}

.persona-format {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: rgba(255,255,255,0.4);
  border-radius: 9999px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  align-self: flex-start;
  margin-top: 8px;
}

.persona-card[data-tone="muted"] .persona-format {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

/* ============================================================
   Layout E — Stage4 (4 image cards + text overlay)
   Gemini로 생성한 이미지를 background-image로 swap 가능
   ============================================================ */
.layout-e {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.stage-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  flex: 1;
  align-items: stretch;
  min-height: 0;
}

.stage-step {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-color: var(--md-surface-container);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 250ms cubic-bezier(0.2, 0, 0, 1);
  isolation: isolate;
}

/* 기본 placeholder gradient (이미지 없을 때) */
.stage-step:not([style*="background-image"])::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    var(--md-surface-container) 0%,
    var(--md-surface-container-low) 60%,
    var(--md-surface-container-lowest) 100%);
  z-index: 0;
}

/* placeholder 아이콘 (이미지 없을 때만) */
.stage-bg-icon {
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 96px;
  color: var(--md-on-surface-variant);
  opacity: 0.2;
  z-index: 1;
  pointer-events: none;
}

/* gradient scrim — 텍스트 가독성 */
.stage-step::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
    rgba(15, 20, 30, 0.82) 0%,
    rgba(15, 20, 30, 0.55) 35%,
    rgba(15, 20, 30, 0.18) 65%,
    rgba(15, 20, 30, 0) 100%);
  z-index: 2;
}

/* 현재(4번째) 단계: primary 색조 scrim */
.stage-step.is-current {
  transform: translateY(-8px);
  box-shadow: 0 18px 44px rgba(0, 49, 95, 0.22);
}

.stage-step.is-current::after {
  background: linear-gradient(to top,
    rgba(0, 49, 95, 0.88) 0%,
    rgba(0, 71, 134, 0.62) 38%,
    rgba(0, 97, 164, 0.25) 70%,
    rgba(0, 97, 164, 0) 100%);
}

.stage-step.is-current .stage-bg-icon {
  color: white;
  opacity: 0.32;
}

/* 콘텐츠 */
.stage-content {
  position: relative;
  z-index: 3;
  padding: 36px 36px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stage-num {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 800 28px/1 var(--font-ko-display);
  color: white;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.5px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.stage-step.is-current .stage-num {
  background: white;
  color: var(--md-primary);
  border-color: white;
}

.stage-name {
  font: 800 var(--fs-title)/1.15 var(--font-ko-display);
  color: white;
  letter-spacing: -1.2px;
  margin: 0;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.stage-caption {
  font: 500 var(--fs-body)/1.5 var(--font-ko-body);
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 0.05px;
  margin: 0;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

.stage-bg-icon-svg {
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  color: var(--md-on-surface-variant);
  opacity: 0.18;
  z-index: 1;
  pointer-events: none;
}

.stage-step.is-current .stage-bg-icon-svg {
  color: white;
  opacity: 0.32;
}

/* ============================================================
   Layout G — Quad4 (2x2 학습 축 사분면)
   ============================================================ */
.layout-g {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 22px;
  flex: 1;
  min-height: 0;
}

.quad-card {
  border-radius: 24px;
  padding: 36px 38px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.quad-card[data-tone="primary"] {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

.quad-card[data-tone="tertiary"] {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
}

.quad-card[data-tone="secondary"] {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

.quad-card[data-tone="surface"] {
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface);
}

/* AI slop 회피: rounded-square icon frame 제거 — bare stroke icon만 */
.quad-icon {
  width: 44px;
  height: 44px;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 10px;
  flex-shrink: 0;
}

.quad-icon svg {
  width: 100%;
  height: 100%;
  color: currentColor;
  stroke-width: 1.5;
  opacity: 0.55;
}

.quad-num {
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  font: 700 var(--fs-min)/1 var(--font-ko-body);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  opacity: 0.65;
  margin: 0;
}

.quad-num strong {
  font: 800 28px/1 var(--font-ko-display);
  letter-spacing: -0.8px;
  font-variant-numeric: tabular-nums;
  opacity: 1;
}

.quad-title {
  font: 700 var(--fs-strong)/1.3 var(--font-ko-display);
  letter-spacing: -0.5px;
  margin: 0;
}

.quad-body {
  font: 500 var(--fs-body)/1.55 var(--font-ko-body);
  margin: 4px 0 0;
  opacity: 0.82;
  letter-spacing: 0.05px;
}

/* (quad-num/title/body 위에 정의됨) */

/* ============================================================
   GSHR · 노하우 7가지 공통 split 레이아웃 (v7)
   사용: <main class="slide-body-zone layout-knowhow-split">
            <div class="kh-tag-block">
              <p class="kh-num">01</p>
              <h2 class="kh-title">…</h2>
              <p class="kh-sub">…</p>
            </div>
            <div class="kh-message">
              <p class="kh-line kh-lead"><strong>No.</strong> …</p>
              <p class="kh-line">…</p>
              <p class="kh-line">…</p>
            </div>
          </main>
   ============================================================ */
.layout-knowhow-split {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 80px;
  align-items: center;
  flex: 1;
  min-height: 0;
}
.layout-knowhow-split > * { min-width: 0; }

.kh-tag-block {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.kh-num {
  font: 200 168px/0.9 var(--font-ko-display);
  color: var(--md-primary, #003F6E);
  letter-spacing: -2px;
  margin: 0;
}
.kh-title {
  font: 800 52px/1.18 var(--font-ko-display);
  color: var(--md-on-surface);
  letter-spacing: -1.4px;
  margin: 0;
}
.kh-title.is-tight { white-space: nowrap; }
.kh-sub {
  font: 600 30px/1.45 var(--font-ko-body);
  color: var(--md-on-surface);
  letter-spacing: -0.5px;
  margin: 8px 0 0;
}

.kh-message {
  display: flex;
  flex-direction: column;
  gap: 30px;
  border-left: 4px solid var(--md-outline-variant);
  padding-left: 56px;
}
.kh-line {
  font: 300 38px/1.5 var(--font-ko-body);
  color: var(--md-on-surface);
  letter-spacing: -0.6px;
  margin: 0;
}
.kh-line strong {
  font-weight: 800;
  color: var(--md-primary, #003F6E);
}
.kh-line.kh-lead {
  font-size: 44px;
  font-weight: 400;
  line-height: 1.45;
}
.kh-line.kh-lead strong {
  font-weight: 800;
  color: var(--md-on-surface);
}