/* ============================================================
   Esme Fong — Portfolio site
   Inherits tokens from assets/colors_and_type.css
   ============================================================ */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
body {
  font-family: var(--font-sans);
  font-size: var(--body-size);
  line-height: var(--body-leading);
  color: var(--fg-1);
  background: var(--ef-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 160ms ease;
}
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }

/* ---------- Accessibility: visible focus ---------- */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-cta:focus-visible {
  outline: 2px solid var(--fg-1);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- Skip to content (keyboard accessibility) ---------- */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 8px;
  background: var(--fg-1);
  color: var(--ef-bg);
  padding: 10px 16px;
  border-radius: 4px;
  z-index: 1000;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: top 160ms ease;
}
.skip-to-content:focus { top: 8px; }

/* ---------- Print styles ---------- */
@media print {
  .nav, .cta, .cases-cta, .case-nav, .foot { display: none !important; }
  .page { background: white !important; }
  body { color: black; }
  a { text-decoration: underline; color: black; }
  .case-banner, .hero-motif, .about-portrait { page-break-inside: avoid; }
  h1, h2, h3 { page-break-after: avoid; }
  .case-section { page-break-inside: avoid; }
}

/* ---------- Page chrome ---------- */
/* Canonical Esme Fong graph-paper grid:
   thin gridlines forming cells, with a small dot dead-center at every line intersection.
   The lines and dots share the same anchor points (cell corners), so the dot sits exactly
   where the horizontal and vertical lines cross. */
.page {
  min-height: 100vh;
  background-color: var(--ef-bg);
  background-image:
    radial-gradient(circle at 0 0, rgba(146, 182, 239, 0.42) 1.2px, transparent 1.7px),
    linear-gradient(to right, rgba(146, 182, 239, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(146, 182, 239, 0.16) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  background-position: 0 0, 0 0, 0 0;
}

/* Reading surface: a calm, opaque panel that sits ABOVE the grid for text-heavy zones.
   Keep the grid visible only as a decorative frame in the page gutters. */
.reading-surface {
  position: relative;
  background: var(--ef-bg);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
.reading-surface::before,
.reading-surface::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: var(--line);
}
.reading-surface::before { top: 0; }
.reading-surface::after { bottom: 0; }

.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 56px;
}
@media (max-width: 760px) {
  .shell { padding: 0 24px; }
}

/* ---------- Top nav ---------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--line);
}
.nav--index { justify-content: flex-end; }
.nav-brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--fg-1);
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 14px;
  color: var(--fg-2);
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link:hover { color: var(--ef-navy-700); }
.nav-link.is-active { color: var(--fg-1); }
.nav-cta {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-1);
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  transition: all 180ms cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.01em;
}
.nav-cta:hover {
  background: var(--fg-1);
  color: var(--fg-inv);
  border-color: var(--fg-1);
}

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--fg-2);
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 72px;
  display: grid;
  grid-template-columns: 1.25fr 0.8fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 56px 0;
  }
  .hero-motif img { max-width: 280px; }
}
.hero-left { }
.hero-eyebrow { margin-bottom: 28px; }
.hero-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(56px, 6.2vw, 86px);
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  margin: 0;
  white-space: nowrap;
}
.hero-divider {
  width: clamp(160px, 28vw, 280px);
  height: 2px;
  background: var(--fg-1);
  border: 0;
  margin: 22px 0 18px;
}
.hero-role {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 22px;
  color: var(--fg-1);
  margin: 0;
}
.hero-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 26px;
  color: var(--fg-1);
  margin: 4px 0 0;
  line-height: 1.35;
}
.hero-bio {
  margin-top: 36px;
  font-size: 17px;
  line-height: 1.65;
  color: var(--fg-2);
  max-width: 540px;
}
.hero-cta-row {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 36px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--r-sm);
  border: 1px solid var(--fg-1);
  background: var(--fg-1);
  color: var(--fg-inv);
  transition: all 180ms cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}
.btn:hover {
  background: var(--ef-navy-700);
  border-color: var(--ef-navy-700);
}
.btn-ghost {
  background: transparent;
  color: var(--fg-1);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  background: var(--ef-signal-soft);
  border-color: var(--fg-1);
  color: var(--fg-1);
}
.btn-arrow { transition: transform 180ms cubic-bezier(0.4, 0, 0.2, 1); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* Hero motif on right */
.hero-motif {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-motif img {
  width: 100%;
  max-width: 460px;
  height: auto;
  mix-blend-mode: multiply;
}

/* ---------- Stat strip (the headline numbers) ---------- */
.stat-strip {
  padding: 56px 0 72px;
  border-top: 1px solid var(--line);
}
.stat-strip-eyebrow {
  margin-bottom: 32px;
}
.stat-strip-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 36px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 0 0 8px;
  max-width: 720px;
}
.stat-strip-title em {
  font-weight: 400;
}
.stat-strip-sub {
  font-size: 16px;
  color: var(--fg-2);
  margin: 0 0 48px;
  max-width: 620px;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat-grid--three {
  grid-template-columns: repeat(3, 1fr);
}
.stat-grid--three .stat-value {
  font-size: 64px;
}
.stat-grid--three .stat-cell {
  padding: 40px 28px 44px;
}
.stat-cell {
  background: var(--ef-bg);
  padding: 32px 24px 36px;
}
.stat-value {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 52px;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  margin-bottom: 14px;
}
.stat-value sup {
  font-size: 0.5em;
  font-weight: 400;
  vertical-align: super;
  margin-left: 2px;
  color: var(--fg-2);
}
.stat-label {
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg-2);
}
.stat-context {
  font-size: 12px;
  color: var(--fg-3);
  margin-top: 8px;
  letter-spacing: 0.02em;
}
.stat-chapter {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
  font-size: 15px;
  color: var(--fg-1);
  margin-top: 4px;
  letter-spacing: -0.005em;
}

@media (max-width: 880px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid--three { grid-template-columns: 1fr; }
}

/* ---------- Career arc ---------- */
.arc {
  padding: 80px 0 88px;
  border-top: 1px solid var(--line);
}
.arc-head {
  margin-bottom: 40px;
}
.arc-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 32px;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 12px 0 0;
  max-width: 620px;
  line-height: 1.2;
}
.arc-title em { font-weight: 400; }
.arc-intro {
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg-2);
  max-width: 660px;
  margin: 20px 0 0;
}

.arc-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.arc-track::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 4%;
  right: 4%;
  height: 1px;
  background: var(--line-strong);
  z-index: 0;
}
.arc-step {
  position: relative;
  z-index: 1;
}
.arc-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ef-bg);
  border: 2px solid var(--fg-1);
  margin: 11px 0 18px;
}
.arc-step:last-child .arc-dot {
  background: var(--fg-1);
}
.arc-years {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 12px;
}
.arc-logo {
  height: 52px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
}
.arc-logo img {
  height: 52px;
  width: auto;
  max-width: 100%;
  display: block;
  mix-blend-mode: multiply;
}
.arc-company {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin-bottom: 6px;
}
.arc-role {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  color: var(--fg-3);
  margin-bottom: 14px;
  line-height: 1.45;
}
.arc-system {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-1);
  border-left: 3px solid var(--fg-1);
  padding-left: 14px;
}

@media (max-width: 880px) {
  .arc-track { grid-template-columns: 1fr; gap: 28px; }
  .arc-track::before { display: none; }
  .arc-dot { display: none; }
}

/* ---------- Case grid ---------- */
.cases {
  padding: 88px 0 96px;
  border-top: 1px solid var(--line);
}
.cases-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 32px;
}
.cases-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 32px;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
}
.cases-title em { font-weight: 400; }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.cases-cta {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.cases-cta-text {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 0;
  max-width: 560px;
}
.cases-cta-text em { font-weight: 400; font-style: italic; }
@media (max-width: 720px) {
  .cases-cta { padding-top: 28px; margin-top: 40px; }
  .cases-cta-text { font-size: 20px; }
}
.case-card {
  display: flex;
  flex-direction: column;
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}
.case-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px -12px rgba(16, 58, 108, 0.16);
}
.case-card-banner {
  position: relative;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.case-card-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.case-card-body {
  padding: 28px 28px 30px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.case-card-eyebrow {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.case-card-result {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: -0.015em;
  color: var(--fg-1);
  margin: 0 0 6px;
  line-height: 1.15;
}
.case-card-result em { font-weight: 400; }
.case-card-blurb {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--fg-2);
  margin: 8px 0 22px;
  flex: 1;
}
.case-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-top: auto;
}
.case-card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--fg-2);
  background: var(--ef-bg);
}
.case-card-arrow {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-1);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap 180ms cubic-bezier(0.4, 0, 0.2, 1);
}
.case-card:hover .case-card-arrow { gap: 12px; }

@media (max-width: 880px) {
  .cases-grid { grid-template-columns: 1fr; }
}

/* ---------- About strip ---------- */
.about {
  padding: 80px 0;
  border-top: 1px solid var(--line);
}
.about-grid {
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: 56px;
  align-items: start;
  margin-bottom: 56px;
}
.about-portrait img {
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  display: block;
}
.about-content { max-width: 720px; }
.about-eyebrow { margin-bottom: 24px; }
.about-h {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 38px;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--fg-1);
  margin: 0 0 32px;
}
.about-h em { font-weight: 400; }
.about-narrative p {
  font-size: 17px;
  line-height: 1.75;
  color: var(--fg-1);
  margin: 0 0 20px;
}
.about-narrative p:last-child { margin-bottom: 0; }
.about-narrative p.muted { color: var(--fg-2); }
.about-skills {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.about-skill h4 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin: 0 0 10px;
}
.about-skill p {
  font-size: 14px;
  color: var(--fg-1);
  line-height: 1.55;
  margin: 0;
}

@media (max-width: 880px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-portrait { max-width: 240px; }
  .about-skills { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 540px) {
  .about-skills { grid-template-columns: 1fr; }
}

/* ---------- Mid-page CTA band (between cases and about) ---------- */
.cta-band {
  margin: 56px 0;
  padding: 32px 40px;
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--fg-1);
  border-radius: var(--r-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band-text {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 0;
  max-width: 580px;
}
.cta-band-text em { font-weight: 400; }
@media (max-width: 720px) {
  .cta-band { flex-direction: column; align-items: flex-start; padding: 24px 28px; }
}

/* ---------- Final CTA ---------- */
.cta {
  margin: 0 0 96px;
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 64px 56px;
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 48px;
  align-items: center;
}
.cta-h {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 0 0 10px;
  max-width: 680px;
  text-wrap: balance;
}
.cta-h em { font-weight: 400; }
.cta-sub {
  font-size: 15px;
  color: var(--fg-2);
  margin: 0;
  max-width: 540px;
  line-height: 1.6;
}
.cta-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .cta { grid-template-columns: 1fr; padding: 40px 28px; }
}

/* ---------- Footer ---------- */
.foot {
  padding: 32px 0 40px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--fg-3);
}
.foot-r { display: flex; gap: 14px; align-items: center; }
.foot a { color: var(--fg-2); }
.foot a:hover { color: var(--fg-1); }

/* ============================================================
   Case study page
   ============================================================ */
.case-page-shell {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 72px 56px;
  background: var(--ef-bg);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
@media (max-width: 760px) {
  .case-page-shell { padding: 24px 24px 40px; border-left: 0; border-right: 0; }
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--fg-3);
  padding-top: 32px;
  margin-bottom: 56px;
}
.crumbs a { color: var(--fg-2); }
.crumbs a:hover { color: var(--fg-1); }
.crumbs span.sep { color: var(--fg-3); }

.case-head {
  margin-bottom: 24px;
}
.case-eyebrow { margin-bottom: 14px; }
.case-h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 44px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  margin: 0;
}
.case-h1 em { font-weight: 400; }
.case-deck {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 21px;
  line-height: 1.45;
  color: var(--fg-1);
  margin: 0 0 36px;
  max-width: 660px;
}

.case-banner {
  margin: 0 0 28px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ef-bg-card);
  padding: 18px;
  position: relative;
}
.case-banner img {
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 18px 0 20px;
  border-top: 1px solid var(--line);
  margin: 0 0 44px;
}
.case-meta-cell h5 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 5px;
}
.case-meta-cell p {
  font-size: 13px;
  color: var(--fg-1);
  margin: 0;
  line-height: 1.45;
}

@media (max-width: 760px) {
  .case-meta { grid-template-columns: repeat(2, 1fr); }
}

.case-result {
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ef-signal);
  border-radius: var(--r-md);
  padding: 24px 28px;
  margin: 0 0 56px;
}
.case-result-eyebrow {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 10px;
}
.case-result p {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--fg-1);
  margin: 0;
}
.case-result strong {
  font-weight: 700;
  color: var(--fg-1);
}

.case-section {
  margin: 0 0 48px;
}
.case-section h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 0 0 16px;
}
.case-section p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--fg-1);
  margin: 0 0 14px;
}
.case-section ul, .case-section ol {
  margin: 0 0 14px;
  padding-left: 24px;
}
.case-section li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg-1);
  margin-bottom: 12px;
}
.case-section li strong {
  font-weight: 600;
  color: var(--fg-1);
}

.case-pull {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.4;
  color: var(--fg-1);
  padding: 24px 0 24px 28px;
  border-left: 2px solid var(--fg-1);
  margin: 32px 0 32px;
}

.case-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 32px 0;
}
.case-stat-cell {
  background: var(--ef-bg);
  padding: 24px 20px;
}
.case-stat-v {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 36px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  margin-bottom: 8px;
}
.case-stat-l {
  font-size: 13px;
  color: var(--fg-2);
  line-height: 1.5;
}
@media (max-width: 760px) {
  .case-stat-row { grid-template-columns: 1fr; }
}

.case-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 80px 0 32px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.case-nav-cell {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 22px 24px;
  background: var(--ef-bg);
  transition: all 180ms cubic-bezier(0.4, 0, 0.2, 1);
}
.case-nav-cell:hover {
  background: var(--ef-bg-card);
  border-color: var(--line-strong);
}
.case-nav-cell--right { text-align: right; }
.case-nav-dir {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 8px;
}
.case-nav-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.005em;
  color: var(--fg-1);
  line-height: 1.3;
}

@media (max-width: 760px) {
  .case-nav { grid-template-columns: 1fr; }
  .case-nav-cell--right { text-align: left; }
}

/* ---------- Tables (used in case 4 ranking) ---------- */
.case-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 16px 0 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.case-table th, .case-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--fg-1);
}
.case-table th {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
  background: var(--ef-bg-card);
}
.case-table tr:last-child td { border-bottom: 0; }
.case-table tr.tier-1 td { background: rgba(41, 128, 229, 0.05); }
.case-table td.rank { font-variant-numeric: tabular-nums; color: var(--fg-2); }
.case-table td.total { font-weight: 700; color: var(--fg-1); }

/* ---------- Code blocks (architecture diagrams) ---------- */
.case-code {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin: 16px 0 28px;
  color: var(--fg-1);
  white-space: pre;
  overflow-x: auto;
}

/* ---------- Inline code ---------- */
.case-section code,
.case-example code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--ef-bg-card);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--line);
  color: var(--ef-navy-700);
}

/* ---------- Callout (e.g. "See it in code" link) ---------- */
.case-callout {
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ef-signal);
  border-radius: var(--r-md);
  padding: 18px 24px;
  margin: 8px 0 28px;
}
.case-callout-eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-2);
  margin-bottom: 8px;
}
.case-callout-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ef-signal);
  font-weight: 500;
  transition: color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}
.case-callout-link:hover { color: var(--fg-1); }
.case-callout-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 11px;
  flex-shrink: 0;
}

/* ---------- Case example blocks (the three Voice Range pieces) ---------- */
.case-example {
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px 36px 36px;
  margin: 0 0 32px;
}
.case-example-head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
  margin-bottom: 20px;
}
.case-example-head .eyebrow { margin-bottom: 10px; }
.case-example-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  margin: 0;
  line-height: 1.3;
}
.case-example-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 18px;
}
.case-example-meta h5 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 6px;
}
.case-example-meta p {
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-1);
  margin: 0;
}
/* ---------- Workflow flow diagram (Case 1: How the system works) ---------- */
.workflow-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 36px;
  list-style: none;
  padding: 0;
  margin: 28px 0 26px;
}
.workflow-step {
  position: relative;
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.workflow-step::after {
  content: '→';
  position: absolute;
  right: -26px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--fg-3);
}
.workflow-step:nth-child(3)::after,
.workflow-step:last-child::after { content: none; }
.workflow-step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--fg-3);
}
.workflow-step-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.2;
  color: var(--fg-1);
  letter-spacing: -0.01em;
}
.workflow-step-body {
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-2);
  margin-top: 2px;
}
.workflow-arch {
  background: var(--ef-bg);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 22px;
  margin: 8px 0 22px;
}
.workflow-arch-eyebrow {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 8px;
}
.workflow-arch p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  margin: 0;
}
@media (max-width: 900px) {
  .workflow-flow {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .workflow-step::after { content: none; }
}

/* ---------- Case depth callout (production beyond the demo) ---------- */
.case-depth {
  background: var(--ef-bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--fg-1);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin: 18px 0 22px;
}
.case-depth-eyebrow {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-1);
  margin-bottom: 12px;
}
.case-depth ul {
  margin: 0;
  padding-left: 20px;
}
.case-depth ul li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-1);
  margin: 6px 0;
}

.case-example-media {
  margin: 0 0 22px;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ef-bg);
}
.case-example-media img {
  display: block;
  width: 100%;
  height: auto;
}
.case-example-media-video {
  display: flex;
  justify-content: center;
  padding: 0;
}
.case-example-media-video video {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 640px;
  height: auto;
  border-radius: var(--r-md);
}
.case-example .case-table {
  background: var(--ef-bg);
  margin: 8px 0 20px;
}
.case-example-os {
  background: var(--ef-bg);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 24px 20px;
  margin: 6px 0 18px;
}
.case-example-os .eyebrow { margin-bottom: 10px; }
.case-example-os ol {
  margin: 0;
  padding-left: 20px;
}
.case-example-os li {
  font-size: 14.5px;
  line-height: 1.6;
  margin-bottom: 10px;
}
.case-example-os li:last-child { margin-bottom: 0; }
.case-example-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ef-signal);
  font-weight: 500;
  margin-top: 6px;
  transition: color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}
.case-example-link:hover { color: var(--fg-1); }

@media (max-width: 760px) {
  .case-example-meta { grid-template-columns: 1fr; }
  .case-example { padding: 24px 22px; }
}