/* ================================================================
   STYLE.CSS — Chiyomi Akita Portfolio
   Fonts loaded via <link> in HTML:
     Plus Jakarta Sans, DM Serif Display, DM Mono
   ================================================================ */

/* ── 1. DESIGN TOKENS ─────────────────────────────────────────── */

:root {
  --bg: #f9f8f5;
  --text: #0d0d0d;
  --muted: #888;
  --faint: #bbb;
  --border: rgba(0, 0, 0, 0.08);
  --blue: #1a56db;
  --surface: #f2f1ee;
  --blue-soft: rgba(26, 86, 219, 0.08);
  /* e2e-loop chip background */

  --fs-display: clamp(40px, 5.5vw, 56px);
  --fs-h1: clamp(32px, 3.5vw, 40px);
  --fs-h2: 32px;
  --fs-h3: 24px;
  --fs-body-l: 16px;
  --fs-body-m: 14px;
  --fs-label: 12px;
}

/* ── 2. RESET & BASE ──────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── 3. SCROLL REVEAL ─────────────────────────────────────────── */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .65s ease, transform .65s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ── 4. NAV ───────────────────────────────────────────────────── */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 48px;
  border-bottom: 1px solid var(--border);
  background: rgba(249, 248, 245, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Index nav */
.nav-logo {
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s;
}

.nav-links a:hover {
  color: var(--text);
}

/* Case study nav */
.nav-back {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s;
}

.nav-back:hover {
  color: var(--text);
}

.nav-case {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
}

/* ── 5. COMMON COMPONENTS ─────────────────────────────────────── */

.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background: var(--blue);
  color: #fff;
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .12em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 2px;
  transition: opacity .2s;
}

.btn-primary:hover {
  opacity: .85;
}

.btn-ghost {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
  text-decoration: none;
  border-bottom: 1px solid #ddd;
  padding-bottom: 2px;
  transition: color .2s, border-color .2s;
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text);
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  max-width: 1200px;
  margin: 0 auto;
}

.section-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 88px 48px;
}

.section-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}

/* Case study default: 20px. pg-index overrides to 48px below. */
.section-title {
  font-size: var(--fs-h1);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 20px;
}

.pg-index .section-title {
  margin-bottom: 48px;
}

/* ── 6. TODO BADGE ────────────────────────────────────────────── */

.todo {
  display: inline-flex;
  align-items: center;
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #8a6500;
  background: rgba(160, 118, 0, 0.09);
  border: 1px solid rgba(160, 118, 0, 0.22);
  padding: 2px 7px;
  border-radius: 2px;
  vertical-align: middle;
  margin-left: 7px;
}

/* ── 7. HERO — index ──────────────────────────────────────────── */

/* Case study #hero base; .pg-index overrides with full grid. */
#hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 112px 48px 0;
}

.pg-index #hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 0.9fr 1.3fr;
  align-items: center;
  gap: 24px;
  padding: 120px 56px 80px;
  position: relative;
}

/* eyebrow: case study = blue/20px; index override = faint/24px */
.hero-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp .7s ease forwards .1s;
}

.pg-index .hero-eyebrow {
  color: var(--faint);
  margin-bottom: 24px;
}

/* Index hero components */
.hero-left {
  padding-bottom: 56px;
}

.hero-headline {
  font-size: var(--fs-display);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.025em;
  color: var(--text);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp .7s ease forwards .25s;
}

.hero-headline em {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--blue);
  letter-spacing: -.01em;
}

.hero-sub {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.9;
  max-width: 44ch;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp .7s ease forwards .4s;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  opacity: 0;
  animation: fadeUp .7s ease forwards .55s;
}

.hero-right {
  position: relative;
  justify-self: center;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-stat {
  text-align: right;
  padding: 14px 0;
}

.hero-stat-num {
  font-size: var(--fs-h2);
  font-weight: 600;
  line-height: 1;
  color: var(--text);
}

.hero-stat-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
  margin-top: 4px;
}

.hero-stat-divider {
  width: 1px;
  height: 20px;
  background: #ddd;
  margin-left: auto;
}

.hero-bar {
  position: absolute;
  left: 56px;
  bottom: 32px;
}

.bar-tag {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--faint);
}

/* ── Index hero: intro reveal (after JS choreography) + E2E loop ──── */
/* Reveal: nav / copy / bar start hidden, shown once body.revealed is set */
.pg-index nav,
.pg-index .hero-left,
.pg-index .hero-bar {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .6s ease, transform .6s ease;
  animation: none;
}

body.revealed nav,
body.revealed .hero-left,
body.revealed .hero-bar {
  opacity: 1;
  transform: none;
}

/* Neutralize per-child fadeUp on index (parent .hero-left handles reveal) */
.pg-index .hero-eyebrow,
.pg-index .hero-headline,
.pg-index .hero-sub,
.pg-index .hero-cta {
  opacity: 1;
  transform: none;
  animation: none;
}

.pg-index .hero-left {
  max-width: 440px;
  justify-self: end;
  padding-bottom: 0;
}

/* Loop wrapper (the element JS scales/translates during intro) */
.e2e-loop {
  width: 100%;
  max-width: 660px;
  transform-origin: center center;
  opacity: 0;
  will-change: transform;
  z-index: 20;
}

.e2e-loop svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

/* Intro loading overlay (JS-created; covers the page behind the centered loop during the intro animation). z-index: above sections, below the transforming loop (20) and nav (100). */
.intro-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity .5s ease;
}

/* Scroll lock during the intro animation (toggled in JS only; never bound to :not(.revealed) so no-JS stays scrollable). */
html.intro-lock {
  overflow: hidden;
  scroll-behavior: auto;
}

body.intro-lock {
  overflow: hidden;
}

/* Static loop pieces */
.e2e-loop .ring-seg {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1.4;
  opacity: .45;
  stroke-linecap: round;
}

.e2e-loop .ring-dir {
  fill: var(--blue);
  opacity: 0;
}

.e2e-loop .link {
  stroke: var(--blue);
  stroke-width: 1.2;
  opacity: .5;
  stroke-linecap: round;
}

.e2e-loop .link-dot {
  fill: var(--blue);
}

.e2e-loop .nodeC {
  fill: #fff;
  stroke: var(--border);
  stroke-width: 1;
}

.e2e-loop .hoverRing {
  fill: none;
  stroke: var(--blue);
  stroke-width: 2.4;
  stroke-dasharray: var(--circ);
  stroke-dashoffset: var(--circ);
  transition: stroke-dashoffset .6s cubic-bezier(.45, 0, .15, 1);
}

.e2e-loop .icon {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.e2e-loop .icon-fill {
  fill: var(--blue);
  stroke: none;
}

.e2e-loop .n-num {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  fill: var(--blue);
  letter-spacing: .1em;
  font-weight: 500;
}

.e2e-loop .n-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 16px;
  fill: var(--text);
  letter-spacing: -.01em;
}

.e2e-loop .n-skill {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  fill: var(--muted);
  letter-spacing: .02em;
}

.e2e-loop .hub-fill {
  fill: var(--bg);
}

.e2e-loop .hub-ring {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1.25;
  opacity: .5;
}

.e2e-loop .hub-ring2 {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1;
  opacity: .18;
}

.e2e-loop .hub-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 24px;
  fill: var(--text);
  letter-spacing: .02em;
}

.e2e-loop .hub-sub {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  letter-spacing: .2em;
  fill: var(--muted);
}

.e2e-loop .chip-bg {
  fill: var(--blue-soft);
}

.e2e-loop .chip-tx {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  fill: var(--blue);
  letter-spacing: .04em;
}

.e2e-loop .dotgrid {
  fill: var(--blue);
  opacity: .16;
}

/* Intro animation states (on the svg) */
.e2e-loop .anim .node-group {
  opacity: 0;
  transform: scale(.88);
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity .4s ease, transform .4s cubic-bezier(.2, .8, .25, 1);
}

.e2e-loop .label-group {
  transition: opacity .35s ease;
}

.e2e-loop .anim .label-group {
  opacity: 0;
}

.e2e-loop .anim .link-group {
  opacity: 0;
}

.e2e-loop .anim .ring-dir {
  opacity: 0;
  transition: opacity .35s ease;
}

.e2e-loop .anim .hub-group {
  opacity: 0;
  transform: scale(.94);
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity .55s ease, transform .55s cubic-bezier(.2, .8, .25, 1);
}

.e2e-loop .anim .ring-seg {
  stroke-dasharray: var(--len);
  stroke-dashoffset: var(--len);
  transition: stroke-dashoffset .45s ease;
}

.e2e-loop .anim .link {
  stroke-dasharray: var(--llen);
  stroke-dashoffset: var(--llen);
  transition: stroke-dashoffset .3s ease .1s;
}

.e2e-loop .anim .link-dot {
  opacity: 0;
  transition: opacity .2s ease .35s;
}

/* Desktop resting: labels hidden; hover/focus reveals label + grows node + draws blue ring */
.e2e-loop .compact .node-group {
  transition: transform .3s cubic-bezier(.2, .8, .25, 1);
  transform-box: fill-box;
  transform-origin: center;
}

.e2e-loop .compact .label-group {
  opacity: 0 !important;
  pointer-events: none;
}

.e2e-loop .compact .node:hover .label-group,
.e2e-loop .compact .node:focus-within .label-group {
  opacity: 1 !important;
}

.e2e-loop .compact .node:hover .node-group,
.e2e-loop .compact .node:focus-within .node-group {
  transform: scale(1.14);
}

.e2e-loop .compact .node:hover .hoverRing,
.e2e-loop .compact .node:focus-within .hoverRing {
  stroke-dashoffset: 0;
}

.e2e-loop .compact .node {
  cursor: pointer;
}

.e2e-loop .compact .node:focus {
  outline: none;
}

/* Mobile/touch resting: labels always visible */
.e2e-loop .labels-on .label-group {
  opacity: 1 !important;
}

/* ── 8. HERO — case study ─────────────────────────────────────── */

/* Wide hero visual — common to both case studies */
.hero-visual-wide {
  width: 100%;
  aspect-ratio: 1829 / 799;
  overflow: hidden;
  margin-bottom: 72px;
  background: var(--surface);
  opacity: 0;
  animation: fadeUp .7s ease forwards .15s;
}

.hero-visual-wide img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* Title + meta, two columns below the visual */
.hero-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: 64px;
  align-items: start;
  padding-bottom: 56px;
}

.hero-copy {
  min-width: 0;
}

.hero-meta-wrap {
  align-content: start;
  opacity: 0;
  animation: fadeUp .7s ease forwards .55s;
}

.hero-title {
  font-size: var(--fs-display);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.025em;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp .7s ease forwards .25s;
}

.hero-title em {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--blue);
  letter-spacing: -.01em;
}

.hero-subtitle {
  font-size: var(--fs-body-l);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 36px;
  opacity: 0;
  animation: fadeUp .7s ease forwards .4s;
}

/* Spec sheet — label left, value right (replaces meta chips) */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 1px solid var(--border);
}

.spec-table tr {
  border-bottom: 1px solid var(--border);
}

.spec-table td {
  padding: 13px 0;
  vertical-align: top;
}

.spec-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
  width: 108px;
  white-space: nowrap;
  padding-right: 16px;
}

.spec-value {
  font-size: var(--fs-body-m);
  font-weight: 500;
  color: var(--text);
  line-height: 1.45;
}

.spec-value small {
  display: block;
  font-weight: 400;
  font-size: var(--fs-label);
  color: var(--muted);
  margin-top: 2px;
}

/* ── 9. BUNDLE: KPI STRIP ─────────────────────────────────────── */

.hero-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  opacity: 0;
  animation: fadeUp .7s ease forwards .85s;
}

.kpi-item {
  padding: 24px 0;
  border-right: 1px solid var(--border);
}

.kpi-item:first-child {
  padding-left: 0;
}

.kpi-item:last-child {
  border-right: none;
  padding-right: 0;
}

.kpi-num {
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--blue);
  line-height: 1;
  letter-spacing: -.02em;
  margin-bottom: 5px;
}

.kpi-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
}

/* ── 11. SECTION BODY ─────────────────────────────────────────── */

.section-body {
  font-size: var(--fs-body-l);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.9;
  margin-bottom: 48px;
}

p.section-body,
div.section-body>p {
  max-width: 64ch;
}

.section-body .case-figure {
  max-width: none;
  width: 100%;
}

.section-body p+p {
  margin-top: 16px;
}

/* ── 12. INSIGHT CARDS ────────────────────────────────────────── */

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.insight-card {
  padding: 28px 24px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--surface);
}

.insight-tag {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}

.insight-title {
  font-size: var(--fs-body-l);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 10px;
}

.insight-body {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
}

/* ── 13. OPTION CARDS ─────────────────────────────────────────── */

.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.option-card {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.option-card.rejected .option-title,
.option-card.rejected .option-list li,
.option-card.rejected .option-sub {
  color: #666;
}

.option-card.chosen {
  border-color: var(--blue);
  background: rgba(26, 86, 219, 0.03);
}

.option-verdict {
  display: inline-flex;
  align-items: center;
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 2px;
  margin-bottom: 18px;
}

.option-verdict.rejected {
  color: var(--faint);
  border: 1px solid var(--border);
}

.option-verdict.chosen {
  color: var(--blue);
  border: 1px solid rgba(26, 86, 219, 0.35);
  background: rgba(26, 86, 219, 0.06);
}

.option-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
}

.option-sub {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .07em;
  color: var(--faint);
  margin-bottom: 20px;
}

.option-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option-list li {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.75;
  padding-left: 18px;
  position: relative;
}

.option-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--faint);
}

/* ── 14. CONSTRAINT BOX ───────────────────────────────────────── */

.constraint-box {
  padding: 24px 28px;
  border-left: 3px solid var(--blue);
  background: rgba(26, 86, 219, 0.03);
}

.constraint-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 10px;
}

.constraint-box p {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.85;
}

/* ── 15. SOLUTION CARDS ───────────────────────────────────────── */

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.solution-card {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 2px;
  transition: background .25s, border-color .25s;
}

.solution-card:hover {
  background: var(--surface);
  border-color: rgba(0, 0, 0, 0.14);
}

.solution-card.full-width {
  grid-column: 1 / -1;
}

.solution-num {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .12em;
  color: var(--blue);
  margin-bottom: 14px;
}

.solution-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 12px;
}

.solution-body {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
}

.case-figure {
  margin: 48px 0;
}

.case-figure img,
.case-figure video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.case-figure figcaption {
  font-size: var(--fs-label);
  color: var(--muted);
  line-height: 1.6;
  margin-top: 12px;
}

/* ── 15.2 ICON COMPARE ────────────────────────────────────────── */

.icon-compare-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.icon-compare-card {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.icon-compare-card.selected {
  border-color: var(--blue);
  background: rgba(26, 86, 219, 0.03);
}

.icon-compare-visual {
  width: 112px;
  height: 112px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-compare-card.selected .icon-compare-visual {
  border-color: var(--blue);
}

.icon-compare-visual img {
  width: 56px;
  height: 56px;
}

.variant-note {
  font-size: var(--fs-label);
  color: var(--muted);
  line-height: 1.6;
  margin-top: 12px;
}

/* ── 15.5 MORE CASE STUDIES ──────────────────────────────────── */

.more-cases .section-wrap {
  padding-top: 72px;
}

.more-cases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.more-case-card {
  min-height: 320px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  transition: background .25s, border-color .25s;
}

.more-case-card:hover,
.more-case-card:focus-visible {
  background: var(--surface);
  border-color: var(--blue);
}

.more-case-card:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.more-case-meta {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 22px;
}

.more-case-num {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-size: var(--fs-h3);
  line-height: 1;
  color: var(--faint);
  transition: color .25s;
}

.more-case-card:hover .more-case-num,
.more-case-card:focus-visible .more-case-num {
  color: var(--blue);
}

.more-case-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 12px;
  transition: color .25s;
}

.more-case-card:hover .more-case-title,
.more-case-card:focus-visible .more-case-title {
  color: var(--blue);
}

.more-case-desc {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
}

.more-case-stat {
  align-self: flex-end;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
}

.more-cases-back {
  width: fit-content;
  margin: 28px auto 0;
  display: block;
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s, border-color .25s;
}

.more-cases-back:hover,
.more-cases-back:focus-visible {
  color: var(--text);
  border-color: var(--text);
}

/* ── 16. IMPACT STATS ─────────────────────────────────────────── */

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.pg-redesign .impact-grid {
  margin-bottom: 24px;
}

.impact-stat {
  padding: 40px 28px;
  background: var(--surface);
}

.impact-num {
  font-size: var(--fs-display);
  font-weight: 700;
  color: var(--blue);
  line-height: 1;
  letter-spacing: -.025em;
  margin-bottom: 8px;
}

.impact-num.tbd-num {
  color: var(--faint);
  font-size: var(--fs-h2);
  font-family: 'DM Mono', monospace;
  font-weight: 400;
  letter-spacing: .04em;
}

.impact-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
  line-height: 1.55;
}

.impact-context {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.5;
}

/* ── 17. CAUSAL CHAIN (redesign) ──────────────────────────────── */

.causal-chain {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.causal-node {
  padding: 18px 22px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--surface);
  flex: 1;
  min-width: 140px;
}

.causal-node-label {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 6px;
}

.causal-node-title {
  font-size: var(--fs-body-m);
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.causal-arrow {
  flex: 0 0 auto;
  padding: 0 10px;
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  color: var(--faint);
}

/* ── 18. FLOW STEPS ───────────────────────────────────────────── */

.flow-scroll {
  overflow-x: auto;
  padding-bottom: 4px;
}

/* Bundle: 760px; redesign overrides to 720px via .pg-redesign below */
.flow-row {
  display: flex;
  min-width: 760px;
}

.pg-redesign .flow-row {
  min-width: 720px;
}

.flow-step {
  flex: 1;
  padding: 28px 22px;
  border: 1px solid var(--border);
  border-right: none;
  background: var(--surface);
  position: relative;
}

.flow-step:last-child {
  border-right: 1px solid var(--border);
}

.flow-arrow {
  position: absolute;
  right: -13px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--faint);
  z-index: 1;
}

.flow-step:last-child .flow-arrow {
  display: none;
}

.flow-num {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .12em;
  color: var(--blue);
  margin-bottom: 8px;
}

.flow-title {
  font-size: var(--fs-body-m);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 5px;
  line-height: 1.3;
}

.flow-sub {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .06em;
  color: var(--faint);
}

/* ── 19. REFLECTION ───────────────────────────────────────────── */

.reflection-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.reflection-card {
  padding: 32px;
  border: 1px dashed rgba(0, 0, 0, 0.12);
  border-radius: 2px;
  background: var(--surface);
}

.reflection-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 20px;
}

.reflection-tbd {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
}

.reflection-tbd p {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
}

/* ── 20. INDEX: WORKS ─────────────────────────────────────────── */

.tag {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 2px;
}

/* Case study index — editorial list (hairline-separated rows, no thumbnails/cards) */
.cs-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  align-items: center;
  gap: 36px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  position: relative;
  transition: color .25s;
}

.cs-row:first-of-type {
  border-top: 1px solid var(--border);
}

.cs-row::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--surface);
  opacity: 0;
  transition: opacity .25s;
  z-index: -1;
}

.cs-row:hover::after,
.cs-row:focus-visible::after {
  opacity: 1;
}

.cs-row:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.cs-num {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-size: var(--fs-h3);
  line-height: 1;
  color: var(--faint);
  transition: color .25s;
}

.cs-row:hover .cs-num,
.cs-row:focus-visible .cs-num {
  color: var(--blue);
}

.cs-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cs-tag {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 2px;
}

.cs-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  transition: color .25s;
}

.cs-row:hover .cs-title,
.cs-row:focus-visible .cs-title {
  color: var(--blue);
}

.cs-desc {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
  max-width: 520px;
}

.cs-signal {
  display: flex;
  align-items: center;
  gap: 28px;
}

.cs-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
}

.cs-stat-num {
  font-size: var(--fs-h1);
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  letter-spacing: -.01em;
}

.cs-stat-scope {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-weight: 400;
  font-size: var(--fs-h3);
  color: var(--text);
  line-height: 1.1;
}

.cs-stat-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
  margin-top: 6px;
}

.cs-arrow {
  font-size: var(--fs-h3);
  color: var(--faint);
  flex-shrink: 0;
  transition: transform .25s, color .25s;
}

.cs-row:hover .cs-arrow,
.cs-row:focus-visible .cs-arrow {
  transform: translateX(4px);
  color: var(--blue);
}

/* ── 21. INDEX: ABOUT ─────────────────────────────────────────── */

#about .section-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-bio {
  font-size: var(--fs-body-l);
  font-weight: 300;
  color: var(--muted);
  line-height: 1.95;
}

.about-bio strong {
  color: var(--text);
  font-weight: 500;
}

.about-bio em {
  color: var(--blue);
  font-style: normal;
  font-weight: 500;
}

.about-bio p+p {
  margin-top: 20px;
}

.about-right {
  padding-top: 8px;
}

.skills-group-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 14px;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.skill-tag {
  font-size: var(--fs-body-m);
  font-weight: 400;
  padding: 6px 14px;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 2px;
}

.skill-tag.highlight {
  border-color: var(--blue);
  color: var(--blue);
}

.visa-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--faint);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 2px;
}

.visa-dot {
  width: 6px;
  height: 6px;
  background: #22c55e;
  border-radius: 50%;
  flex-shrink: 0;
}

.timeline {
  position: relative;
  margin-bottom: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding: 0 0 20px 20px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--faint);
  z-index: 1;
}

.timeline-item.highlight::before {
  background: var(--blue);
}

.timeline-role {
  font-size: var(--fs-body-m);
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

.timeline-item.highlight .timeline-role {
  color: var(--blue);
}

.timeline-meta {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  color: var(--faint);
  margin-top: 2px;
}

/* ── 22. INDEX: CONTACT ───────────────────────────────────────── */

#contact .section-wrap {
  text-align: center;
  padding: 100px 48px;
}

.contact-headline {
  font-size: var(--fs-h1);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}

.contact-headline em {
  font-family: 'DM Serif Display', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--blue);
}

.contact-sub {
  font-size: var(--fs-body-m);
  font-weight: 300;
  color: var(--muted);
  max-width: 40ch;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.contact-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* ── 23. FOOTER ───────────────────────────────────────────────── */

/* Case study default: 28px 48px. pg-index overrides to 20px 48px. */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.pg-index footer {
  padding: 20px 48px;
}

.footer-copy {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
}

.footer-back {
  font-family: 'DM Mono', monospace;
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid #ddd;
  padding-bottom: 2px;
  transition: color .2s, border-color .2s;
}

.footer-back:hover {
  color: var(--text);
  border-color: var(--text);
}

/* ── 24. ANIMATIONS ───────────────────────────────────────────── */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── 25. MEDIA QUERIES ────────────────────────────────────────── */

@media (max-width: 768px) {
  nav {
    padding: 18px 24px;
  }

  /* Case study #hero mobile; .pg-index overrides below */
  #hero {
    padding: 88px 24px 0;
  }

  .hero-visual-wide {
    margin-bottom: 48px;
  }

  .hero-content-grid {
    grid-template-columns: 1fr;
    padding-bottom: 40px;
    gap: 32px;
  }

  .spec-label {
    width: 92px;
  }

  /* Index #hero mobile */
  .pg-index #hero {
    grid-template-columns: 1fr;
    padding: 100px 24px 0;
    min-height: auto;
  }

  .pg-index .nav-links {
    gap: 20px;
  }

  .pg-index .hero-left {
    padding-bottom: 32px;
  }

  .pg-index .hero-bar {
    padding: 14px 24px;
  }

  .pg-index #about .section-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section-wrap {
    padding: 64px 24px;
  }

  .insight-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .options-grid {
    grid-template-columns: 1fr;
  }

  .solution-grid {
    grid-template-columns: 1fr;
  }

  .icon-compare-grid {
    grid-template-columns: 1fr;
  }

  .more-cases-grid {
    grid-template-columns: 1fr;
  }

  .more-case-card {
    min-height: 280px;
    padding: 28px 24px;
  }

  .case-figure {
    margin: 32px 0;
  }

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

  .impact-stat {
    padding: 28px 20px;
  }

  .impact-num {
    font-size: var(--fs-h1);
  }

  .reflection-grid {
    grid-template-columns: 1fr;
  }

  /* Case study index mobile — stack the 3 columns, left-align the signal */
  .cs-row {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 28px 0;
  }

  .cs-desc {
    max-width: none;
  }

  .cs-signal {
    gap: 20px;
  }

  .cs-stat {
    align-items: flex-start;
    text-align: left;
  }

  /* Footer mobile — base then page-specific */
  footer {
    flex-direction: column;
    text-align: center;
  }

  .pg-index footer {
    gap: 8px;
  }

  .pg-bundle footer,
  .pg-redesign footer {
    gap: 12px;
    padding: 24px;
  }

  /* Bundle KPI mobile */
  .pg-bundle .hero-kpis {
    grid-template-columns: repeat(2, 1fr);
  }

  .pg-bundle .kpi-item {
    padding: 20px 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .pg-bundle .kpi-item:nth-last-child(-n+2) {
    border-bottom: none;
  }

  /* Redesign mobile */
  .pg-redesign .causal-chain {
    flex-direction: column;
    align-items: stretch;
  }

  .pg-redesign .causal-arrow {
    transform: rotate(90deg);
    text-align: center;
    padding: 6px 0;
  }
}

/* ── Index hero / E2E loop — stack to one column on small + touch ──── */
@media (max-width: 880px) {
  .pg-index #hero {
    grid-template-columns: 1fr;
    padding: 104px 24px 48px;
    gap: 0;
  }

  .pg-index .hero-left {
    justify-self: start;
    max-width: 520px;
  }

  .pg-index .hero-right {
    justify-self: stretch;
    margin-top: 8px;
  }

  .pg-index .hero-bar {
    position: static;
    left: auto;
    bottom: auto;
    margin-top: 24px;
  }

  .e2e-loop {
    max-width: 560px;
  }

  /* prevent any horizontal overflow from the diagram on phones */
  body.pg-index {
    overflow-x: hidden;
  }
}

@media (prefers-reduced-motion: reduce) {

  .pg-index nav,
  .pg-index .hero-left,
  .pg-index .hero-bar,
  .e2e-loop,
  .e2e-loop *,
  .cs-row,
  .cs-row * {
    transition: none !important;
    animation: none !important;
  }
}