/* ==========================================================================
   /platform/ — page styles (prefix pf-)
   ========================================================================== */

/* ---------- Hero ---------- */
.pf-hero {
  padding-bottom: clamp(48px, 6vw, 96px);
}
.pf-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  align-items: center;
}
.pf-hero__title {
  margin-top: var(--space-5);
  max-width: 14ch;
}
.pf-hero__lede {
  margin-top: var(--space-5);
}
.pf-hero__actions {
  margin-top: var(--space-6);
}
@media (min-width: 1080px) {
  .pf-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }
}

/* Layer stack */
.pf-stack {
  position: relative;
  width: 100%;
  max-width: 640px;
  margin-inline: auto;
}
.pf-stack__svg {
  width: 100%;
  height: auto;
  overflow: visible;
}
.pf-iso__plane {
  fill: rgba(10, 17, 32, 0.86);
  stroke: rgba(160, 185, 215, 0.4);
  stroke-width: 1;
}
.pf-iso--operator .pf-iso__plane {
  fill: rgba(13, 26, 44, 0.9);
}
.pf-iso--events .pf-iso__plane {
  fill: rgba(12, 30, 46, 0.9);
  stroke: rgba(126, 234, 243, 0.42);
}
.pf-iso__space {
  fill: none;
  stroke: rgba(160, 185, 215, 0.3);
  stroke-width: 1;
}
.pf-iso__space--occ {
  fill: rgba(70, 219, 232, 0.14);
  stroke: rgba(70, 219, 232, 0.42);
}
.pf-iso__space--hl {
  fill: rgba(70, 219, 232, 0.6);
  stroke: var(--cyan-300);
}
.pf-iso__space--exc {
  fill: rgba(245, 180, 84, 0.28);
  stroke: var(--amber-400);
}
.pf-iso__cone {
  fill: none;
  stroke: rgba(126, 234, 243, 0.32);
  stroke-width: 1;
  stroke-dasharray: 3 4;
}
.pf-iso__cam {
  fill: var(--cyan-400);
}
.pf-iso__chip {
  fill: var(--ink-950);
  stroke: var(--cyan-400);
  stroke-width: 1;
}
.pf-iso__zone {
  fill: rgba(70, 219, 232, 0.05);
  stroke: rgba(126, 234, 243, 0.5);
  stroke-width: 1;
  stroke-dasharray: 5 4;
}
.pf-iso__path {
  fill: none;
  stroke: var(--cyan-200);
  stroke-width: 1.25;
  stroke-dasharray: 2 4;
  stroke-linecap: round;
}
.pf-iso__rule {
  stroke: rgba(160, 185, 215, 0.14);
  stroke-width: 1;
}
.pf-iso__card {
  fill: rgba(70, 219, 232, 0.07);
  stroke: rgba(126, 234, 243, 0.45);
  stroke-width: 1;
}
.pf-iso__card--hl {
  fill: rgba(70, 219, 232, 0.32);
  stroke: var(--cyan-300);
}
.pf-iso__link {
  stroke: var(--cyan-400);
  stroke-width: 1;
  stroke-dasharray: 2 4;
}
.pf-stack__pulse {
  fill: var(--cyan-300);
  opacity: 0;
}
@media (prefers-reduced-motion: no-preference) {
  .pf-stack__pulse {
    animation: pf-rise 4.2s var(--ease-in-out) infinite 1.2s;
  }
  .pf-iso--edge .pf-iso__space--hl,
  .pf-iso__card--hl {
    animation: pf-glow 4.2s ease-in-out infinite 1.2s;
  }
}
@keyframes pf-rise {
  0% {
    transform: translateY(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    transform: translateY(var(--travel, -320px));
    opacity: 0;
  }
}
@keyframes pf-glow {
  0%,
  100% {
    fill-opacity: 1;
  }
  50% {
    fill-opacity: 0.45;
  }
}

/* Labels: list below the drawing on small screens, leader-lined callouts on wide. */
.pf-stack__labels {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.pf-stack__label {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
}
.pf-stack__label strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--fg);
}
.pf-stack__label strong + span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--fg-3);
}
.pf-stack__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}
/* Small screens list layers bottom-up in reading order: 01, 02, 03. */
.pf-stack__label--edge {
  order: 1;
}
.pf-stack__label--operator {
  order: 2;
}
.pf-stack__label--events {
  order: 3;
}
@media (min-width: 640px) {
  .pf-stack__labels {
    position: absolute;
    inset: 0;
    margin: 0;
    border: 0;
    display: block;
    pointer-events: none;
  }
  .pf-stack__label {
    position: absolute;
    left: 71%;
    right: 0;
    transform: translateY(-50%);
    padding: 0 0 0 14px;
    border: 0;
    border-left: 1px solid var(--rule-3);
    flex-direction: column;
    gap: 4px;
  }
  .pf-stack__label::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    width: 22px;
    height: 1px;
    background: var(--rule-3);
  }
  .pf-stack__label--events {
    top: 23%;
  }
  .pf-stack__label--operator {
    top: 50%;
  }
  .pf-stack__label--edge {
    top: 77%;
  }
}

/* ---------- Three layers ---------- */
.pf-layers__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-7);
  position: relative;
}
.pf-layers__item {
  position: relative;
  padding-top: var(--space-6);
  border-top: 1px solid var(--rule-2);
}
.pf-layers__node {
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cyan-400);
  border-radius: 50%;
  background: var(--bg);
}
.pf-layers__item:nth-child(2) .pf-layers__node {
  background: color-mix(in srgb, var(--cyan-400) 40%, var(--bg));
}
.pf-layers__item:nth-child(3) .pf-layers__node {
  background: var(--cyan-400);
}
.pf-layers__item h3 {
  margin-bottom: var(--space-4);
}
.pf-layers__item > p {
  color: var(--fg-2);
  max-width: 44ch;
}
.pf-layers__parts {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.pf-layers__parts li {
  display: flex;
  gap: 10px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--fg-2);
}
.pf-layers__parts li::before {
  content: '';
  width: 12px;
  height: 1px;
  background: var(--accent);
  flex: none;
}
@media (min-width: 960px) {
  .pf-layers__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }
  .pf-layers__item + .pf-layers__item {
    padding-left: var(--space-6);
    border-left: 1px solid var(--rule);
  }
  .pf-layers__item + .pf-layers__item .pf-layers__node {
    left: -5px;
  }
}

/* ---------- Capabilities ---------- */
.pf-caps__head {
  display: grid;
  gap: var(--space-6);
  margin-bottom: clamp(48px, 7vw, 104px);
}
.pf-caps__head h2 {
  max-width: 15ch;
}
.pf-caps__toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-2);
}
.pf-caps__toc li {
  border-bottom: 1px solid var(--rule);
}
.pf-caps__toc a {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 11px 0;
  color: var(--fg-2);
  text-decoration: none;
  transition: color var(--dur-fast);
}
.pf-caps__toc a span {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  color: var(--fg-3);
  letter-spacing: 0.08em;
}
.pf-caps__toc a:hover {
  color: var(--accent-strong);
}
@media (min-width: 960px) {
  .pf-caps__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: var(--space-8);
  }
}

.pf-cap + .pf-cap {
  margin-top: clamp(80px, 10vw, 152px);
}
.pf-cap__num {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.pf-cap__text > * + * {
  margin-top: var(--space-5);
}
.pf-cap__text h3 {
  max-width: 17ch;
}
.pf-cap__text .body-l {
  max-width: 50ch;
}
.pf-cap__text .pf-ticks {
  margin-top: var(--space-6);
}
.pf-ticks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
  max-width: 50ch;
}
.pf-ticks li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--fg-2);
  font-size: 0.97rem;
}
.pf-ticks li::before {
  content: '';
  flex: none;
  width: 9px;
  height: 5px;
  border-left: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: translateY(-3px) rotate(-45deg);
}

.pf-cap__wide-head {
  display: grid;
  gap: var(--space-5) var(--space-8);
  margin-bottom: var(--space-7);
}
.pf-cap__wide-head h3 {
  margin-top: var(--space-4);
  max-width: 16ch;
}
@media (min-width: 960px) {
  .pf-cap__wide-head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
  }
}

/* ---------- Product fragments (shared) ---------- */
.pf-ui {
  min-width: 0;
  padding: clamp(14px, 2vw, 22px);
  background:
    linear-gradient(180deg, rgba(70, 219, 232, 0.035), transparent 40%),
    var(--surface);
  box-shadow: var(--shadow-float);
}
.pf-ui__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.pf-ui__title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
}
.pf-ui__meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-2);
}
.pf-ui__cap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.pf-ui__cap .dot {
  width: 5px;
  height: 5px;
}
.pf-chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid var(--rule-2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-2);
  white-space: nowrap;
}
.pf-chip--warm {
  border-color: rgba(245, 180, 84, 0.5);
  color: var(--amber-300);
}
.pf-chip--stale {
  border-style: dashed;
  color: var(--fg-3);
}

/* Search */
.pf-search__field {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid color-mix(in srgb, var(--cyan-400) 55%, transparent);
  border-radius: var(--radius-s);
  background: var(--ink-950);
  box-shadow: 0 0 0 3px rgba(70, 219, 232, 0.08);
  color: var(--fg-3);
}
.pf-search__query {
  color: var(--fg);
  font-size: 0.98rem;
}
.pf-search__caret {
  width: 1px;
  height: 18px;
  margin-left: -6px;
  background: var(--cyan-400);
}
@media (prefers-reduced-motion: no-preference) {
  .pf-search__caret {
    animation: pf-caret 1.1s steps(1) infinite;
  }
}
@keyframes pf-caret {
  50% {
    opacity: 0;
  }
}
.pf-search__count {
  margin: 16px 0 8px;
}
.pf-search__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.pf-search__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 14px;
  padding: 12px 12px;
  border: 1px solid transparent;
  border-bottom-color: var(--rule);
  border-radius: var(--radius-s);
  font-size: 0.9rem;
}
.pf-search__row.is-match {
  border-color: color-mix(in srgb, var(--cyan-400) 40%, transparent);
  background: rgba(70, 219, 232, 0.06);
}
.pf-search__ref {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-strong);
}
.pf-search__row.is-stale .pf-search__ref {
  color: var(--fg-2);
}
.pf-search__desc {
  color: var(--fg-3);
  font-size: 0.86rem;
}
.pf-search__where {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  color: var(--fg);
  text-align: right;
}
.pf-search__where .icon {
  color: var(--accent);
  flex: none;
}
.pf-search__seen {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--fg-3);
}


/* Lot map */
.pf-map {
  --cell-gap: 3px;
}
.pf-map__plan {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    'n'
    's'
    'v'
    'c'
    'b';
}
.pf-map__zone {
  min-width: 0;
  padding: 12px;
  border: 1px dashed rgba(126, 234, 243, 0.32);
  border-radius: var(--radius-s);
}
.pf-map__zone--n {
  grid-area: n;
}
.pf-map__zone--s {
  grid-area: s;
}
.pf-map__zone--v {
  grid-area: v;
}
.pf-map__zone--c {
  grid-area: c;
}
.pf-map__zone.is-stale {
  border-color: var(--rule-2);
}
.pf-map__zhead {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}
.pf-map__zname {
  text-transform: uppercase;
  color: var(--fg-2);
}
.pf-map__zcount {
  color: var(--fg);
}
.pf-map__await {
  color: var(--fg-3);
}
.pf-map__spaces {
  display: grid;
  gap: 0;
}
.pf-map__row {
  display: grid;
  grid-template-columns: repeat(var(--n), minmax(0, 1fr));
  gap: var(--cell-gap);
  max-width: calc(var(--n) * 22px);
}
.pf-map__aisle {
  height: 14px;
  margin: 2px 0;
  background: linear-gradient(90deg, var(--rule-2) 50%, transparent 50%) center / 10px 1px repeat-x;
  max-width: 100%;
}
.pf-map__building {
  grid-area: b;
  display: grid;
  place-items: center;
  min-height: 72px;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius-s);
  background: repeating-linear-gradient(135deg, rgba(160, 185, 215, 0.06) 0 1px, transparent 1px 9px);
}
.pf-map__building span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
@media (min-width: 720px) {
  .pf-map__plan {
    grid-template-columns: 8fr 14fr 16fr;
    grid-template-areas:
      'n n s'
      'v b c';
  }
  .pf-map__row {
    max-width: none;
  }
}

.pf-sp {
  display: block;
  aspect-ratio: 3 / 5;
  border: 1px solid rgba(160, 185, 215, 0.24);
  border-radius: 2px;
}
.pf-sp--occ {
  background: rgba(70, 219, 232, 0.2);
  border-color: rgba(70, 219, 232, 0.5);
}
.pf-sp--held {
  border: 1px dashed var(--cyan-300);
}
.pf-sp--found {
  background: var(--cyan-400);
  border-color: var(--cyan-200);
  box-shadow: 0 0 0 3px rgba(70, 219, 232, 0.25);
}
.pf-sp--exc {
  background: rgba(245, 180, 84, 0.35);
  border-color: var(--amber-400);
  box-shadow: 0 0 0 3px rgba(245, 180, 84, 0.18);
}
.pf-sp--stale {
  border-color: rgba(160, 185, 215, 0.18);
  background: repeating-linear-gradient(135deg, rgba(160, 185, 215, 0.22) 0 1px, transparent 1px 4px);
}
.pf-map__legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--fg-2);
}
.pf-map__legend li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.pf-map__legend .pf-sp {
  width: 10px;
}

/* Day timeline */
.pf-day {
  margin: 4px 0 18px;
}
.pf-day__track {
  position: relative;
  height: 22px;
  background: linear-gradient(var(--rule-2), var(--rule-2)) 0 50% / 100% 1px no-repeat;
}
.pf-day__mark,
.pf-day__now {
  position: absolute;
  top: 50%;
  width: 9px;
  height: 9px;
  margin: -4.5px 0 0 -4.5px;
  border: 1px solid var(--cyan-400);
  border-radius: 50%;
  background: var(--surface);
}
.pf-day__mark.is-current {
  background: var(--cyan-400);
}
.pf-day__now {
  width: 1px;
  height: 22px;
  margin: -11px 0 0;
  border: 0;
  border-radius: 0;
  background: var(--fg-3);
}
.pf-day__span {
  position: absolute;
  top: 50%;
  height: 7px;
  margin-top: -3.5px;
  border: 1px dashed var(--cyan-300);
  border-radius: 2px;
}
.pf-day__scale {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--fg-3);
}
.pf-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.pf-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 2px 14px;
  padding: 12px 0 12px 22px;
  border-top: 1px solid var(--rule);
}
.pf-timeline__item::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 19px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan-400);
  border-radius: 50%;
  background: var(--surface);
}
.pf-timeline__item::after {
  content: '';
  position: absolute;
  left: 6.5px;
  top: 28px;
  bottom: -19px;
  width: 1px;
  background: var(--rule-2);
}
.pf-timeline__item:last-child::after {
  display: none;
}
.pf-timeline__item.is-current::before {
  background: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(70, 219, 232, 0.2);
}
.pf-timeline__item.is-held::before {
  border-style: dashed;
}
.pf-timeline__time {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-2);
  padding-top: 1px;
}
.pf-timeline__body {
  display: grid;
}
.pf-timeline__title {
  font-weight: 560;
  color: var(--fg);
  font-size: 0.95rem;
}
.pf-timeline__where {
  font-size: 0.86rem;
  color: var(--fg-2);
}
.pf-timeline__type {
  grid-column: 2;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
}
@media (min-width: 560px) {
  .pf-timeline__item {
    grid-template-columns: 52px minmax(0, 1fr) auto;
    align-items: baseline;
  }
  .pf-timeline__type {
    grid-column: 3;
  }
}

/* ---------- Exceptions (light section, dark product panel) ---------- */
.pf-exceptions__grid {
  gap: clamp(40px, 6vw, 88px);
}
.pf-exceptions .pf-cap__text h3 {
  max-width: 14ch;
}
.pf-flow {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: 1px solid var(--rule-2);
}
.pf-flow li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}
.pf-flow__n {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  color: var(--fg-3);
  padding-top: 3px;
}
.pf-flow__t {
  font-weight: 600;
  color: var(--fg);
}
.pf-flow__d {
  color: var(--fg-2);
  font-size: 0.95rem;
}
@media (min-width: 720px) {
  .pf-flow li {
    grid-template-columns: 40px 120px minmax(0, 1fr);
    align-items: baseline;
  }
  .pf-flow__n {
    grid-row: auto;
  }
}
@media (min-width: 960px) {
  .pf-review {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }
}
.pf-review__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.pf-review__item {
  padding: 14px 16px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: rgba(5, 9, 17, 0.35);
}
.pf-review__item.is-open {
  border-color: rgba(245, 180, 84, 0.45);
  box-shadow: inset 2px 0 0 var(--amber-400);
}
.pf-review__item.is-resolved {
  background: transparent;
  border-style: dashed;
}
.pf-review__item.is-resolved .pf-review__title {
  color: var(--fg-2);
}
.pf-review__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.pf-review__title {
  font-weight: 560;
  color: var(--fg);
  font-size: 0.96rem;
}
.pf-review__where {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--fg-3);
}
.pf-review__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 0;
}
.pf-review__meta div {
  padding-top: 8px;
  border-top: 1px solid var(--rule);
}
.pf-review__meta dt {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.pf-review__meta dd {
  margin: 2px 0 0;
  font-size: 0.9rem;
  color: var(--fg);
}
.pf-review__meta code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
}
.pf-review__note {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-s);
  background: rgba(160, 185, 215, 0.06);
}
.pf-review__note p {
  margin-top: 4px;
  font-size: 0.9rem;
  color: var(--fg-2);
}
.pf-review__steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}
.pf-review__steps li {
  padding-top: 8px;
  border-top: 2px solid var(--rule-2);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.pf-review__steps .is-done {
  border-top-color: var(--cyan-400);
  color: var(--fg-2);
}
.pf-review__steps .is-now {
  border-top-color: var(--amber-400);
  color: var(--amber-300);
}

/* ---------- Anatomy of an event ---------- */
.pf-anatomy {
  overflow: hidden;
}
.pf-anatomy__head {
  max-width: 62ch;
  margin-bottom: clamp(40px, 6vw, 80px);
}
.pf-anatomy__head h2 {
  max-width: 14ch;
}
.pf-anatomy__grid {
  display: grid;
  gap: var(--space-7);
  align-items: start;
}
.pf-anatomy__grid--stale {
  margin-top: clamp(48px, 6vw, 88px);
  align-items: center;
}
@media (min-width: 1080px) {
  .pf-anatomy__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }
  .pf-anatomy__grid--stale {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}
.pf-code {
  min-width: 0;
  border: 1px solid var(--rule-2);
  border-radius: var(--radius-l);
  background: var(--ink-1000);
  padding: 16px 0 14px;
  box-shadow: var(--shadow-float);
}
.pf-code__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 0 20px 12px;
  border-bottom: 1px solid var(--rule);
}
.pf-code__bar code {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
}
.pf-code__pre {
  margin: 0;
  padding: 14px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: clamp(0.76rem, 0.72rem + 0.2vw, 0.88rem);
  line-height: 1.8;
  color: var(--fg-2);
  tab-size: 2;
}
.pf-code__pre:focus-visible {
  outline-offset: -2px;
}
.pf-code__pre code {
  display: block;
  min-width: max-content;
}
.pf-code__line {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px 0 18px;
  border-left: 2px solid transparent;
}
.pf-code__txt {
  white-space: pre;
}
.pf-code__line.is-marked {
  background: rgba(70, 219, 232, 0.05);
  border-left-color: var(--cyan-400);
}
.pf-code__k {
  color: var(--cyan-200);
}
.pf-code__s {
  color: var(--fg);
}
.pf-code__n {
  color: var(--amber-300);
}
.pf-code__mark {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-left: auto;
  border: 1px solid var(--cyan-400);
  border-radius: 50%;
  font-size: 0.64rem;
  line-height: 1;
  color: var(--cyan-300);
  flex: none;
}
.pf-code .pf-ui__cap {
  margin: 0;
  padding: 12px 20px 0;
}
.pf-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-2);
}
.pf-notes__item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.pf-notes__num {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--cyan-400);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan-300);
  margin-top: 1px;
}
.pf-notes__field {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--fg);
}
.pf-notes__item p {
  margin-top: 4px;
  color: var(--fg-2);
  font-size: 0.95rem;
}
.pf-stale {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
}
.pf-stale .pf-notes__num {
  border-color: var(--amber-400);
  color: var(--amber-300);
}
.pf-stale h3 {
  font-size: var(--step-2);
}
.pf-stale h3 code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--amber-300);
}
.pf-stale p {
  margin-top: var(--space-3);
  max-width: 52ch;
}
.pf-vocab {
  margin-top: clamp(48px, 6vw, 88px);
  padding-top: var(--space-5);
  border-top: 1px solid var(--rule-2);
}
.pf-vocab ul {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pf-vocab code {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--rule-2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-2);
}

/* ---------- Roles ---------- */
.pf-roles__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-2);
}
.pf-roles__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px 16px;
  padding-block: clamp(22px, 3vw, 36px);
  border-bottom: 1px solid var(--rule-2);
}
.pf-roles__num {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--fg-3);
  padding-top: 0.5em;
}
.pf-roles__role {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-3);
  line-height: 1.08;
  color: var(--fg);
}
.pf-roles__from,
.pf-roles__body {
  grid-column: 2;
}
.pf-roles__from {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--accent);
}
.pf-roles__body {
  color: var(--fg-2);
  max-width: 54ch;
}
@media (min-width: 1080px) {
  .pf-roles__row {
    grid-template-columns: 72px minmax(0, 4fr) minmax(0, 2.4fr) minmax(0, 5fr);
    align-items: baseline;
    gap: 16px 32px;
  }
  .pf-roles__from,
  .pf-roles__body {
    grid-column: auto;
  }
  .pf-roles__from {
    flex-direction: column;
    gap: 4px;
  }
}

/* ---------- Next ---------- */
.pf-next .split {
  gap: clamp(48px, 7vw, 120px);
}
.pf-paths {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  border-top: 1px solid var(--rule-2);
}
.pf-paths li {
  border-bottom: 1px solid var(--rule-2);
}
.pf-paths a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 20px;
  align-items: center;
  padding: 22px 0;
  text-decoration: none;
  color: var(--fg);
}
.pf-paths__title {
  font-family: var(--font-display);
  font-size: var(--step-3);
  line-height: 1.1;
  transition: color var(--dur-fast);
}
.pf-paths__note {
  grid-column: 1;
  color: var(--fg-2);
  font-size: 0.95rem;
  max-width: 48ch;
}
.pf-paths .icon {
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--fg-3);
  transition:
    transform var(--dur) var(--ease-out),
    color var(--dur-fast);
}
.pf-paths a:hover .pf-paths__title,
.pf-paths a:focus-visible .pf-paths__title {
  color: var(--accent-strong);
}
.pf-paths a:hover .icon {
  transform: translateX(4px);
  color: var(--accent);
}