.kostinbrod-case-study {
  --case-ink: #06111f;
  --case-surface: rgba(255, 255, 255, .78);
  --case-surface-strong: #ffffff;
  --case-line: rgba(15, 23, 42, .11);
  --case-mint: #00ffc6;
  --case-sky: #38bdf8;
  --case-gold: #ffd44d;
  --case-violet: #a78bfa;
  --case-rose: #fb7185;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

/* Keep editorial content available even when reveal observers are delayed or blocked. */
.kostinbrod-case-study .reveal {
  opacity: 1;
  transform: none;
}

:root[data-theme="dark"] .kostinbrod-case-study {
  --case-surface: rgba(255, 255, 255, .052);
  --case-surface-strong: #0a1524;
  --case-line: rgba(255, 255, 255, .105);
}

.case-shell {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

.case-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--case-mint);
  font-size: .75rem;
  font-weight: 850;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.case-eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px rgba(0, 255, 198, .12);
}

.case-section-heading {
  margin: 0;
  max-width: 760px;
  font-size: clamp(2rem, 4.7vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -.055em;
  line-height: .99;
}

.case-section-heading em {
  color: var(--case-mint);
  font-style: normal;
}

.case-section-lede {
  max-width: 680px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.75;
}

.case-hero {
  position: relative;
  isolation: isolate;
  min-height: min(830px, calc(100vh - 64px));
  display: grid;
  align-items: center;
  padding: 92px 0 70px;
  overflow: hidden;
  color: #eafbf6;
  background:
    linear-gradient(108deg, rgba(6, 17, 31, .98) 0%, rgba(6, 17, 31, .95) 42%, rgba(7, 25, 37, .82) 100%),
    #06111f;
}

.case-hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  opacity: .22;
  background-image:
    linear-gradient(rgba(255, 255, 255, .065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .065) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 32%, #000);
  mask-image: linear-gradient(to right, transparent, #000 32%, #000);
}

.case-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 820px;
  height: 820px;
  right: -240px;
  top: -270px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 198, .19), rgba(56, 189, 248, .08) 34%, transparent 67%);
  filter: blur(5px);
}

.case-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, .93fr) minmax(460px, .77fr);
  gap: clamp(46px, 7vw, 96px);
  align-items: center;
}

.case-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.case-hero__meta span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 11px;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 999px;
  color: rgba(234, 251, 246, .76);
  background: rgba(255, 255, 255, .045);
  font-size: .73rem;
  font-weight: 720;
  letter-spacing: .045em;
  text-transform: uppercase;
}

.case-hero h1 {
  max-width: 750px;
  margin: 0;
  font-size: clamp(3.25rem, 7vw, 6.6rem);
  font-weight: 900;
  letter-spacing: -.075em;
  line-height: .88;
}

.case-hero h1 span {
  display: block;
  color: var(--case-mint);
}

.case-hero__lede {
  max-width: 660px;
  margin: 26px 0 0;
  color: rgba(234, 251, 246, .72);
  font-size: clamp(1.03rem, 1.5vw, 1.2rem);
  line-height: 1.7;
}

.case-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.case-hero .btn-outline {
  color: #eafbf6;
  border-color: rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .035);
}

.case-arrow {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  transition: transform 180ms ease;
}

.case-hero .btn:hover .case-arrow,
.case-cta .btn:hover .case-arrow {
  transform: translateX(3px);
}

.case-hero__note {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-top: 30px;
  color: rgba(234, 251, 246, .5);
  font-size: .78rem;
  letter-spacing: .025em;
}

.case-hero__note::before {
  content: "";
  width: 28px;
  height: 1px;
  background: rgba(234, 251, 246, .28);
}

.case-control {
  position: relative;
  min-height: 520px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 28px;
  background: rgba(3, 10, 20, .62);
  box-shadow: 0 40px 100px rgba(0, 0, 0, .36);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.case-control::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(0, 255, 198, .38), transparent 30%, transparent 72%, rgba(56, 189, 248, .25));
  filter: blur(1px);
}

.case-control__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 3px 3px 17px;
  color: rgba(234, 251, 246, .54);
  font-size: .7rem;
  font-weight: 750;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.case-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--case-mint);
}

.case-live::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px rgba(0, 255, 198, .12);
  animation: case-pulse 2.4s ease-in-out infinite;
}

.case-control__top {
  display: grid;
  grid-template-columns: 1fr .82fr;
  gap: 10px;
}

.case-control__metric,
.case-control__chart,
.case-control__flow {
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 17px;
  background: rgba(255, 255, 255, .035);
}

.case-control__metric {
  min-height: 129px;
  padding: 17px;
}

.case-control__label {
  display: block;
  color: rgba(234, 251, 246, .48);
  font-size: .68rem;
  font-weight: 720;
  letter-spacing: .085em;
  text-transform: uppercase;
}

.case-control__value {
  display: block;
  margin-top: 11px;
  color: #fff;
  font-size: 2.35rem;
  font-weight: 850;
  letter-spacing: -.05em;
  line-height: 1;
}

.case-control__value small {
  margin-left: 4px;
  color: rgba(234, 251, 246, .46);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .03em;
}

.case-control__status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 15px;
  color: var(--case-mint);
  font-size: .73rem;
  font-weight: 700;
}

.case-control__status svg {
  width: 14px;
  height: 14px;
}

.case-control__chart {
  position: relative;
  min-height: 129px;
  padding: 14px 13px 8px;
  overflow: hidden;
}

.case-control__chart svg {
  position: absolute;
  inset: 36px 10px 10px;
  width: calc(100% - 20px);
  height: calc(100% - 46px);
  overflow: visible;
}

.case-chart-line {
  fill: none;
  stroke: var(--case-mint);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 280;
  animation: case-draw 2.7s ease-out both;
}

.case-chart-area {
  fill: url(#caseChartFill);
}

.case-chart-guide {
  stroke: rgba(255, 255, 255, .10);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.case-control__flow {
  position: relative;
  margin-top: 10px;
  padding: 18px 15px 16px;
  overflow: hidden;
}

.case-control__flow::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 12px;
  height: 1px;
  opacity: .45;
  background: linear-gradient(90deg, transparent, var(--case-mint), transparent);
}

.case-flow-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.case-flow-item {
  position: relative;
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 11px;
  align-items: center;
  min-height: 51px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 12px;
  background: rgba(255, 255, 255, .025);
}

.case-flow-item::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 100%;
  width: 1px;
  height: 9px;
  background: rgba(0, 255, 198, .3);
}

.case-flow-item:last-child::before {
  display: none;
}

.case-flow-icon {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border-radius: 9px;
  color: var(--flow-accent, var(--case-mint));
  background: color-mix(in srgb, var(--flow-accent, var(--case-mint)) 13%, transparent);
}

.case-flow-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.case-flow-copy strong,
.case-flow-copy small {
  display: block;
}

.case-flow-copy strong {
  color: rgba(255, 255, 255, .9);
  font-size: .77rem;
}

.case-flow-copy small {
  margin-top: 1px;
  color: rgba(234, 251, 246, .4);
  font-size: .63rem;
}

.case-flow-state {
  color: rgba(234, 251, 246, .4);
  font-size: .6rem;
  font-weight: 750;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.case-flow-state--active {
  color: var(--case-mint);
}

.case-signal-orbit {
  position: absolute;
  z-index: 2;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--case-mint);
  box-shadow: 0 0 18px var(--case-mint);
  animation: case-orbit 5s linear infinite;
}

.case-facts {
  position: relative;
  z-index: 4;
  margin-top: -36px;
}

.case-facts__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--case-line);
  border-radius: 22px;
  background: var(--case-surface-strong);
  box-shadow: 0 24px 65px rgba(2, 6, 23, .14);
  overflow: hidden;
}

.case-fact {
  min-height: 151px;
  padding: 25px;
  border-right: 1px solid var(--case-line);
}

.case-fact:last-child {
  border-right: 0;
}

.case-fact__value {
  display: block;
  color: var(--case-mint);
  font-size: clamp(1.85rem, 3vw, 2.65rem);
  font-weight: 900;
  letter-spacing: -.05em;
  line-height: 1;
}

.case-fact__label {
  display: block;
  margin-top: 12px;
  font-size: .88rem;
  font-weight: 760;
  line-height: 1.4;
}

.case-fact__note {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: .74rem;
  line-height: 1.45;
}

.case-intro {
  padding: 128px 0 112px;
  background:
    radial-gradient(50% 45% at 7% 20%, rgba(0, 255, 198, .07), transparent 70%),
    var(--bg);
}

.case-intro__layout {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(360px, .55fr);
  gap: clamp(56px, 9vw, 130px);
  align-items: start;
}

.case-intro__copy p {
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.78;
}

.case-intro__copy p:first-of-type {
  margin-top: 28px;
  color: var(--text);
  font-size: 1.2rem;
}

.case-question {
  position: sticky;
  top: 104px;
  padding: 29px;
  border: 1px solid var(--case-line);
  border-radius: 23px;
  background: var(--case-surface);
  box-shadow: 0 22px 70px rgba(2, 6, 23, .08);
}

.case-question__label {
  color: var(--muted);
  font-size: .69rem;
  font-weight: 780;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.case-question ol {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: case-question;
}

.case-question li {
  counter-increment: case-question;
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 13px;
  align-items: start;
  padding: 17px 0;
  border-top: 1px solid var(--case-line);
  font-weight: 790;
  line-height: 1.35;
}

.case-question li::before {
  content: "0" counter(case-question);
  color: var(--case-mint);
  font-size: .68rem;
  letter-spacing: .06em;
}

.case-constraints {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.case-constraints span {
  padding: 8px 11px;
  border: 1px solid var(--case-line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--case-surface);
  font-size: .75rem;
  font-weight: 700;
}

.case-fieldwork {
  position: relative;
  padding: 118px 0;
  background: rgba(15, 23, 42, .032);
  border-top: 1px solid var(--case-line);
  overflow: hidden;
}

:root[data-theme="dark"] .case-fieldwork {
  background:
    radial-gradient(52% 44% at 7% 22%, rgba(0, 255, 198, .055), transparent 72%),
    rgba(255, 255, 255, .018);
}

.case-fieldwork::before {
  content: "FIELD / 01";
  position: absolute;
  right: -18px;
  top: 51px;
  color: var(--case-line);
  font-size: clamp(5rem, 13vw, 12rem);
  font-weight: 900;
  letter-spacing: -.08em;
  line-height: 1;
  pointer-events: none;
}

.case-fieldwork__head {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr .68fr;
  gap: clamp(50px, 9vw, 120px);
  align-items: end;
}

.case-fieldwork__head > p {
  margin: 0 0 4px;
  color: var(--muted);
  line-height: 1.75;
}

.case-fieldwork__layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(340px, .78fr) minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-top: 62px;
}

.case-fieldwork__media {
  position: sticky;
  top: 88px;
  min-height: 610px;
  margin: 0;
  border: 1px solid var(--case-line);
  border-radius: 23px;
  background: var(--case-surface-strong);
  box-shadow: 0 24px 70px rgba(2, 6, 23, .13);
  overflow: hidden;
}

.case-fieldwork__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 17, 31, .92), transparent 43%);
  pointer-events: none;
}

.case-fieldwork__media img {
  width: 100%;
  height: 610px;
  object-fit: cover;
  object-position: 62% center;
  filter: saturate(.87) contrast(1.03);
  transition: transform 700ms cubic-bezier(.2, .7, .2, 1), filter 300ms ease;
}

.case-fieldwork__media:hover img {
  transform: scale(1.025);
  filter: saturate(1) contrast(1.03);
}

.case-fieldwork__media figcaption {
  position: absolute;
  z-index: 2;
  left: 25px;
  right: 25px;
  bottom: 24px;
  color: rgba(234, 251, 246, .72);
  font-size: .75rem;
  line-height: 1.55;
}

.case-fieldwork__media figcaption span {
  display: block;
  margin-bottom: 6px;
  color: var(--case-mint);
  font-size: .68rem;
  font-weight: 820;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.case-fieldwork__stamp {
  position: absolute;
  z-index: 2;
  top: 18px;
  right: 18px;
  display: grid;
  place-items: center;
  width: 77px;
  height: 77px;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 50%;
  color: rgba(255, 255, 255, .72);
  background: rgba(6, 17, 31, .68);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: .59rem;
  font-weight: 760;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.case-fieldwork__stamp strong {
  display: block;
  margin-bottom: -22px;
  color: #fff;
  font-size: 1.8rem;
  letter-spacing: -.06em;
  line-height: 1;
}

.case-fieldwork__challenges {
  display: grid;
  gap: 9px;
}

.case-field-challenge {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 17px;
  min-height: 151px;
  padding: 22px 24px;
  border: 1px solid var(--case-line);
  border-radius: 17px;
  background: var(--case-surface);
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
}

.case-field-challenge:hover {
  transform: translateX(4px);
  border-color: rgba(0, 255, 198, .28);
}

.case-field-challenge__number {
  padding-top: 4px;
  color: var(--case-mint);
  font-size: .68rem;
  font-weight: 820;
  letter-spacing: .09em;
}

.case-field-challenge h3 {
  margin: 0;
  font-size: 1.04rem;
  letter-spacing: -.02em;
  line-height: 1.3;
}

.case-field-challenge p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.62;
}

.case-field-challenge__flag {
  display: inline-flex;
  margin: 0 0 8px;
  padding: 4px 7px;
  border-radius: 6px;
  color: var(--case-rose);
  background: rgba(251, 113, 133, .09);
  font-size: .61rem;
  font-weight: 840;
  letter-spacing: .095em;
  text-transform: uppercase;
}

.case-field-challenge--critical {
  border-color: rgba(251, 113, 133, .26);
  background:
    radial-gradient(80% 160% at 100% 50%, rgba(251, 113, 133, .075), transparent 70%),
    var(--case-surface);
}

.case-field-challenge--critical .case-field-challenge__number {
  color: var(--case-rose);
}

.case-fieldwork__aftermath {
  display: grid;
  grid-template-columns: .28fr 1fr;
  gap: 30px;
  align-items: center;
  margin-top: 14px;
  padding: 31px 35px;
  border: 1px solid rgba(0, 255, 198, .2);
  border-radius: 19px;
  background:
    radial-gradient(70% 190% at 0% 50%, rgba(0, 255, 198, .11), transparent 66%),
    var(--case-surface);
}

.case-fieldwork__aftermath span {
  color: var(--case-mint);
  font-size: .68rem;
  font-weight: 840;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.case-fieldwork__aftermath p {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.55rem);
  font-weight: 760;
  letter-spacing: -.025em;
  line-height: 1.38;
}

.case-loop {
  position: relative;
  padding: 116px 0 122px;
  color: #eafbf6;
  background: #06111f;
  overflow: hidden;
}

.case-loop::before {
  content: "";
  position: absolute;
  width: 840px;
  height: 840px;
  left: -510px;
  top: 80px;
  border: 1px solid rgba(0, 255, 198, .12);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(0, 255, 198, .025), 0 0 0 180px rgba(56, 189, 248, .018);
}

.case-loop__head {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
}

.case-loop .case-section-heading {
  color: #f4fffc;
}

.case-loop__intro {
  max-width: 430px;
  margin: 0 0 3px;
  color: rgba(234, 251, 246, .6);
  line-height: 1.7;
}

.case-loop__map {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 11px;
  margin-top: 64px;
}

.case-loop__map::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 41px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, var(--case-mint), var(--case-violet), var(--case-sky), var(--case-rose), var(--case-gold));
  opacity: .42;
}

.case-layer {
  --layer-color: var(--case-mint);
  position: relative;
  z-index: 1;
  min-height: 336px;
  padding: 21px 19px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 19px;
  background: rgba(255, 255, 255, .045);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .14);
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.case-layer:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--layer-color) 52%, transparent);
  background: rgba(255, 255, 255, .065);
}

.case-layer__number {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid color-mix(in srgb, var(--layer-color) 40%, transparent);
  border-radius: 50%;
  color: var(--layer-color);
  background: #06111f;
  font-size: .69rem;
  font-weight: 850;
  letter-spacing: .08em;
}

.case-layer__verb {
  display: block;
  margin-top: 32px;
  color: var(--layer-color);
  font-size: .69rem;
  font-weight: 830;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.case-layer h3 {
  margin: 9px 0 0;
  color: #fff;
  font-size: 1.12rem;
  letter-spacing: -.025em;
}

.case-layer p {
  margin: 13px 0 0;
  color: rgba(234, 251, 246, .58);
  font-size: .86rem;
  line-height: 1.64;
}

.case-layer__question {
  display: block;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  color: rgba(234, 251, 246, .83);
  font-size: .76rem;
  font-weight: 720;
  line-height: 1.5;
}

.case-loop__feedback {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  margin: 27px 18px 0;
  color: rgba(234, 251, 246, .46);
  font-size: .68rem;
  font-weight: 760;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.case-loop__feedback span:nth-child(2) {
  position: relative;
  height: 20px;
  border-right: 1px solid rgba(0, 255, 198, .34);
  border-bottom: 1px solid rgba(0, 255, 198, .34);
  border-left: 1px solid rgba(0, 255, 198, .34);
  border-radius: 0 0 12px 12px;
}

.case-loop__feedback span:nth-child(2)::before {
  content: "";
  position: absolute;
  left: -4px;
  top: -3px;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--case-mint);
  border-left: 1px solid var(--case-mint);
  transform: rotate(-45deg);
}

.case-loop__statement {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: 56px;
  align-items: center;
  margin-top: 74px;
  padding: 44px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 24px;
  background:
    radial-gradient(70% 160% at 0% 50%, rgba(0, 255, 198, .11), transparent 66%),
    rgba(255, 255, 255, .035);
}

.case-loop__statement-label {
  color: rgba(234, 251, 246, .43);
  font-size: .7rem;
  font-weight: 780;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.case-loop__statement p {
  margin: 0;
  color: #fff;
  font-size: clamp(1.35rem, 2.6vw, 2.4rem);
  font-weight: 780;
  letter-spacing: -.035em;
  line-height: 1.22;
}

.case-autonomy {
  padding: 120px 0;
  background:
    radial-gradient(45% 42% at 93% 18%, rgba(167, 139, 250, .08), transparent 68%),
    var(--bg);
}

.case-autonomy__head {
  display: grid;
  grid-template-columns: 1fr .75fr;
  gap: 70px;
  align-items: end;
}

.case-autonomy__head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.case-phases {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 13px;
  margin-top: 64px;
}

.case-phases::before {
  content: "";
  position: absolute;
  top: 31px;
  left: 7%;
  right: 7%;
  height: 2px;
  background: linear-gradient(90deg, rgba(15, 23, 42, .1), var(--case-mint));
}

:root[data-theme="dark"] .case-phases::before {
  background: linear-gradient(90deg, rgba(255, 255, 255, .1), var(--case-mint));
}

.case-phase {
  position: relative;
  padding-top: 69px;
}

.case-phase__dot {
  position: absolute;
  z-index: 1;
  top: 19px;
  left: 17px;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 6px solid var(--bg);
  border-radius: 50%;
  background: var(--case-mint);
  box-shadow: 0 0 0 1px rgba(0, 255, 198, .48);
}

.case-phase__card {
  min-height: 283px;
  padding: 23px;
  border: 1px solid var(--case-line);
  border-radius: 19px;
  background: var(--case-surface);
}

.case-phase__number {
  color: var(--case-mint);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.case-phase h3 {
  margin: 11px 0 0;
  font-size: 1.08rem;
  letter-spacing: -.02em;
}

.case-phase p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: .87rem;
  line-height: 1.65;
}

.case-phase__mode {
  display: inline-flex;
  margin-top: 19px;
  padding: 5px 8px;
  border-radius: 7px;
  color: var(--text);
  background: rgba(0, 255, 198, .09);
  font-size: .67rem;
  font-weight: 760;
}

.case-safety {
  padding: 120px 0;
  background: rgba(15, 23, 42, .032);
  border-block: 1px solid var(--case-line);
}

:root[data-theme="dark"] .case-safety {
  background: rgba(255, 255, 255, .018);
}

.case-safety__layout {
  display: grid;
  grid-template-columns: .76fr 1fr;
  gap: clamp(60px, 10vw, 140px);
  align-items: center;
}

.case-safety__copy p {
  max-width: 600px;
  margin: 25px 0 0;
  color: var(--muted);
  line-height: 1.76;
}

.case-guardrails {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 27px;
}

.case-guardrails span {
  padding: 7px 9px;
  border: 1px solid var(--case-line);
  border-radius: 8px;
  background: var(--case-surface);
  color: var(--muted);
  font-size: .71rem;
  font-weight: 680;
}

.case-safety-stack {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 30px;
  border: 1px solid var(--case-line);
  border-radius: 27px;
  background: var(--case-surface);
  box-shadow: 0 24px 70px rgba(2, 6, 23, .09);
}

.case-safety-stack__label {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: .68rem;
  font-weight: 780;
  letter-spacing: .1em;
  text-align: center;
  text-transform: uppercase;
}

.case-safety-layer {
  position: relative;
  padding: 19px 22px;
  border: 1px solid var(--case-line);
  border-radius: 14px;
  background: var(--case-surface-strong);
  text-align: center;
}

.case-safety-layer strong,
.case-safety-layer span {
  display: block;
}

.case-safety-layer strong {
  font-size: .92rem;
}

.case-safety-layer span {
  margin-top: 4px;
  color: var(--muted);
  font-size: .72rem;
}

.case-safety-layer--plant {
  border-color: rgba(251, 113, 133, .26);
}

.case-safety-layer--local {
  margin-inline: 7%;
  border-color: rgba(255, 212, 77, .28);
}

.case-safety-layer--voltmage {
  margin-inline: 14%;
  border-color: rgba(0, 255, 198, .31);
  background: rgba(0, 255, 198, .06);
}

.case-safety-stack__rule {
  margin: 10px auto 0;
  max-width: 390px;
  color: var(--muted);
  font-size: .72rem;
  line-height: 1.55;
  text-align: center;
}

.case-validation {
  padding: 118px 0;
}

.case-validation__layout {
  display: grid;
  grid-template-columns: .64fr 1fr;
  gap: clamp(55px, 9vw, 120px);
  align-items: start;
}

.case-pilot {
  position: sticky;
  top: 104px;
}

.case-pilot__number {
  display: block;
  color: var(--case-mint);
  font-size: clamp(5rem, 11vw, 9.5rem);
  font-weight: 900;
  letter-spacing: -.09em;
  line-height: .78;
}

.case-pilot__number small {
  margin-left: 8px;
  color: var(--text);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -.03em;
}

.case-pilot p {
  max-width: 400px;
  margin: 27px 0 0;
  color: var(--muted);
  line-height: 1.72;
}

.case-pilot__next {
  display: flex;
  gap: 11px;
  align-items: center;
  margin-top: 24px;
  font-size: .82rem;
  font-weight: 760;
}

.case-pilot__next::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--case-mint);
}

.case-kpis {
  display: grid;
  gap: 11px;
}

.case-kpi {
  display: grid;
  grid-template-columns: 74px .52fr 1fr;
  gap: 20px;
  align-items: start;
  padding: 25px;
  border: 1px solid var(--case-line);
  border-radius: 18px;
  background: var(--case-surface);
}

.case-kpi__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  color: var(--kpi-color, var(--case-mint));
  background: color-mix(in srgb, var(--kpi-color, var(--case-mint)) 12%, transparent);
}

.case-kpi__icon svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.case-kpi h3 {
  margin: 3px 0 0;
  font-size: 1.08rem;
  line-height: 1.3;
}

.case-kpi ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 17px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.case-kpi li {
  position: relative;
  padding-left: 14px;
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.48;
}

.case-kpi li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .57em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--kpi-color, var(--case-mint));
}

.case-outcome {
  padding: 110px 0 0;
  color: #eafbf6;
  background: #06111f;
}

.case-outcome__grid {
  display: grid;
  grid-template-columns: .72fr 1fr;
  gap: 80px;
  align-items: start;
}

.case-outcome .case-section-heading {
  color: #fff;
}

.case-outcome__copy > p {
  margin: 0;
  color: rgba(234, 251, 246, .67);
  font-size: 1.04rem;
  line-height: 1.78;
}

.case-outcome__products {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  margin-top: 28px;
}

.case-outcome__product {
  padding: 15px 16px;
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 13px;
  background: rgba(255, 255, 255, .035);
}

.case-outcome__product strong,
.case-outcome__product span {
  display: block;
}

.case-outcome__product strong {
  color: var(--product-color, var(--case-mint));
  font-size: .8rem;
}

.case-outcome__product span {
  margin-top: 3px;
  color: rgba(234, 251, 246, .5);
  font-size: .7rem;
}

.case-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: center;
  margin-top: 92px;
  padding: 42px;
  border: 1px solid rgba(0, 255, 198, .2);
  border-bottom: 0;
  border-radius: 25px 25px 0 0;
  background:
    radial-gradient(60% 150% at 0% 50%, rgba(0, 255, 198, .14), transparent 68%),
    rgba(255, 255, 255, .045);
}

.case-cta__label {
  color: var(--case-mint);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.case-cta h2 {
  max-width: 720px;
  margin: 10px 0 0;
  color: #fff;
  font-size: clamp(1.65rem, 3.2vw, 3rem);
  letter-spacing: -.045em;
  line-height: 1.08;
}

.case-cta .btn {
  min-height: 49px;
  padding-inline: 20px;
  white-space: nowrap;
}

@keyframes case-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 4px rgba(0, 255, 198, .12); }
  50% { opacity: .58; box-shadow: 0 0 0 8px rgba(0, 255, 198, .03); }
}

@keyframes case-draw {
  from { stroke-dashoffset: 280; }
  to { stroke-dashoffset: 0; }
}

@keyframes case-orbit {
  0% { top: 19%; left: 8%; }
  29% { top: 19%; left: calc(92% - 9px); }
  50% { top: calc(86% - 9px); left: calc(92% - 9px); }
  79% { top: calc(86% - 9px); left: 8%; }
  100% { top: 19%; left: 8%; }
}

@media (max-width: 1080px) {
  .case-hero__layout { grid-template-columns: minmax(0, 1fr) 430px; gap: 40px; }
  .case-fieldwork__layout { grid-template-columns: minmax(300px, .65fr) 1fr; }
  .case-fieldwork__media,
  .case-fieldwork__media img { height: 560px; min-height: 560px; }
  .case-loop__map { grid-template-columns: repeat(6, 1fr); }
  .case-layer { grid-column: span 2; min-height: 290px; }
  .case-layer:nth-child(4) { grid-column: 2 / span 2; }
  .case-layer:nth-child(5) { grid-column: 4 / span 2; }
  .case-loop__map::before,
  .case-loop__feedback { display: none; }
  .case-phases { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .case-phases::before { display: none; }
  .case-phase { padding-top: 0; }
  .case-phase__dot { display: none; }
  .case-phase__card { min-height: 230px; }
  .case-kpi { grid-template-columns: 60px 1fr; }
  .case-kpi ul { grid-column: 2; }
}

@media (max-width: 840px) {
  .case-shell { width: min(100% - 34px, 720px); }
  .case-hero { min-height: auto; padding: 72px 0 70px; }
  .case-hero__layout,
  .case-intro__layout,
  .case-fieldwork__head,
  .case-fieldwork__layout,
  .case-autonomy__head,
  .case-safety__layout,
  .case-validation__layout,
  .case-outcome__grid { grid-template-columns: 1fr; }
  .case-hero__layout { gap: 52px; }
  .case-hero h1 { font-size: clamp(3.3rem, 15vw, 5.6rem); }
  .case-control { min-height: 0; }
  .case-facts { margin-top: -25px; }
  .case-facts__grid { grid-template-columns: 1fr 1fr; }
  .case-fact:nth-child(2) { border-right: 0; }
  .case-fact:nth-child(-n + 2) { border-bottom: 1px solid var(--case-line); }
  .case-intro,
  .case-fieldwork,
  .case-loop,
  .case-autonomy,
  .case-safety,
  .case-validation { padding-block: 88px; }
  .case-question,
  .case-pilot { position: static; }
  .case-fieldwork__media { position: relative; top: auto; }
  .case-fieldwork__head { gap: 26px; }
  .case-fieldwork__layout { gap: 11px; margin-top: 45px; }
  .case-fieldwork__media,
  .case-fieldwork__media img { height: min(72vw, 590px); min-height: 430px; }
  .case-fieldwork__media img { object-position: center 47%; }
  .case-loop__head { display: block; }
  .case-loop__intro { margin-top: 24px; }
  .case-loop__map { grid-template-columns: 1fr 1fr; margin-top: 46px; }
  .case-layer,
  .case-layer:nth-child(4),
  .case-layer:nth-child(5) { grid-column: auto; min-height: 0; }
  .case-layer:last-child { grid-column: 1 / -1; }
  .case-loop__statement { grid-template-columns: 1fr; gap: 18px; padding: 31px; }
  .case-safety__layout { gap: 50px; }
  .case-validation__layout { gap: 54px; }
  .case-outcome__grid { gap: 42px; }
  .case-cta { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .case-shell { width: min(100% - 28px, 520px); }
  .case-hero { padding-top: 55px; }
  .case-hero h1 { font-size: clamp(2.8rem, 13.8vw, 4.2rem); }
  .case-hero__actions .btn { width: 100%; justify-content: center; }
  .case-control { margin-inline: -4px; padding: 11px; border-radius: 21px; }
  .case-control__top { grid-template-columns: 1fr; }
  .case-control__chart { min-height: 122px; }
  .case-flow-item { grid-template-columns: 31px 1fr; }
  .case-flow-state { display: none; }
  .case-facts__grid { grid-template-columns: 1fr; }
  .case-fact { min-height: 0; border-right: 0; border-bottom: 1px solid var(--case-line); }
  .case-fact:last-child { border-bottom: 0; }
  .case-intro,
  .case-fieldwork,
  .case-loop,
  .case-autonomy,
  .case-safety,
  .case-validation { padding-block: 72px; }
  .case-loop__map,
  .case-phases,
  .case-outcome__products { grid-template-columns: 1fr; }
  .case-layer,
  .case-layer:nth-child(4),
  .case-layer:nth-child(5),
  .case-layer:last-child { grid-column: auto; }
  .case-loop__statement { margin-top: 52px; padding: 25px; }
  .case-phase__card { min-height: 0; }
  .case-fieldwork__media,
  .case-fieldwork__media img { height: 430px; min-height: 430px; }
  .case-field-challenge { grid-template-columns: 35px 1fr; gap: 12px; padding: 19px 17px; }
  .case-fieldwork__aftermath { grid-template-columns: 1fr; gap: 13px; padding: 25px 21px; }
  .case-safety-stack { padding: 19px 14px; }
  .case-safety-layer--local { margin-inline: 3%; }
  .case-safety-layer--voltmage { margin-inline: 6%; }
  .case-kpi { grid-template-columns: 1fr; padding: 21px; }
  .case-kpi ul { grid-column: auto; grid-template-columns: 1fr; }
  .case-outcome { padding-top: 78px; }
  .case-cta { margin-top: 68px; padding: 28px 22px 34px; }
  .case-cta .btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .case-live::before,
  .case-chart-line,
  .case-signal-orbit { animation: none; }
  .case-layer { transition: none; }
}

@page {
  size: A4;
  margin: 0;
}

@media print {
  :root {
    --bg: #050b14;
    --text: rgba(255, 255, 255, .92);
    --muted: rgba(226, 232, 240, .72);
    --border: rgba(255, 255, 255, .10);
  }

  html,
  body {
    background: #050b14 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .site-header,
  .site-footer {
    display: none !important;
  }

  .kostinbrod-case-study {
    --case-surface: rgba(255, 255, 255, .052);
    --case-surface-strong: #0a1524;
    --case-line: rgba(255, 255, 255, .105);
    background: #050b14 !important;
    color: rgba(255, 255, 255, .92) !important;
  }

  .case-shell {
    width: calc(100% - 56px);
  }

  .case-hero {
    min-height: 297mm;
    padding: 34mm 0 28mm;
    page-break-after: always;
  }

  .case-control {
    display: none;
  }

  .case-hero__layout,
  .case-loop__head,
  .case-autonomy__head,
  .case-safety__layout,
  .case-validation__layout,
  .case-outcome__grid {
    grid-template-columns: 1fr;
  }

  .case-facts {
    margin-top: 0;
    padding-top: 28px;
  }

  .case-facts__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .case-fact {
    min-height: 132px;
    padding: 20px;
    border-right: 1px solid var(--case-line);
    border-bottom: 0;
  }

  .case-fact:nth-child(2) {
    border-right: 1px solid var(--case-line);
  }

  .case-fact:nth-child(-n + 2) {
    border-bottom: 0;
  }

  .case-fact:last-child {
    border-right: 0;
  }

  .case-intro,
  .case-fieldwork,
  .case-loop,
  .case-autonomy,
  .case-safety,
  .case-validation,
  .case-outcome {
    padding-block: 58px;
  }

  .case-fieldwork,
  .case-autonomy,
  .case-safety {
    background-color: #07111e !important;
  }

  .case-fieldwork,
  .case-loop,
  .case-autonomy,
  .case-safety,
  .case-validation,
  .case-outcome {
    break-before: page;
  }

  .case-loop,
  .case-outcome {
    background-color: #06111f !important;
    color: #eafbf6 !important;
  }

  .case-layer,
  .case-phase__card,
  .case-kpi,
  .case-safety-stack,
  .case-question,
  .case-field-challenge,
  .case-fieldwork__media,
  .case-fieldwork__aftermath,
  .case-loop__statement,
  .case-cta {
    break-inside: avoid;
  }

  .case-loop__map {
    grid-template-columns: repeat(3, 1fr);
    gap: 9px;
    margin-top: 38px;
  }

  .case-layer,
  .case-layer:nth-child(4),
  .case-layer:nth-child(5),
  .case-layer:last-child {
    grid-column: auto;
    min-height: 282px;
    padding: 16px;
  }

  .case-layer__verb {
    margin-top: 20px;
  }

  .case-layer p {
    font-size: .76rem;
    line-height: 1.52;
  }

  .case-loop__statement {
    grid-template-columns: .6fr 1.4fr;
    gap: 18px;
    margin-top: 14px;
    padding: 18px 22px;
  }

  .case-loop__statement p {
    font-size: 1.25rem;
  }

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

  .case-safety__layout {
    grid-template-columns: .76fr 1fr;
    gap: 34px;
  }

  .case-validation__layout {
    grid-template-columns: .58fr 1fr;
    gap: 34px;
  }

  .case-outcome__grid {
    grid-template-columns: .72fr 1fr;
    gap: 34px;
  }

  .case-safety__copy p,
  .case-pilot p,
  .case-outcome__copy > p {
    font-size: .87rem;
    line-height: 1.58;
  }

  .case-kpi {
    grid-template-columns: 52px .48fr 1fr;
    gap: 14px;
    padding: 19px;
  }

  .case-kpi ul {
    grid-column: auto;
  }

  .case-fieldwork__media {
    position: relative;
    top: auto;
  }

  .case-cta {
    margin-top: 42px;
    padding: 30px;
    border-bottom: 1px solid rgba(0, 255, 198, .2);
    border-radius: 25px;
  }

  a {
    text-decoration: none;
  }
}
/* Evidence and topic-cluster additions */
.case-evidence{padding:64px 0;background:color-mix(in srgb,var(--text) 3%,var(--bg));border-bottom:1px solid var(--case-line)}
.case-evidence__grid{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:clamp(32px,7vw,90px);align-items:start}
.case-evidence__copy{padding:24px;border:1px solid var(--case-line);border-radius:16px;background:var(--case-surface)}
.case-evidence__copy p{margin:0;color:var(--muted);line-height:1.65}
.case-evidence__copy p+p{margin-top:14px}
.case-evidence__copy strong{color:var(--text);font-size:.75rem;letter-spacing:.07em}
.case-related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:26px}
.case-related a{display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--case-line);border-radius:12px;color:var(--text);text-decoration:none;background:var(--case-surface)}
.case-related span{color:var(--muted);font-size:.86rem;line-height:1.5}
@media(max-width:760px){.case-evidence__grid,.case-related{grid-template-columns:1fr}}