.boundary-lab {
  --boundary-lime: #d9ff62;
  --boundary-pink: #ff5ccf;
  --boundary-cream: #f7f4e8;
  --boundary-muted: #a7afa8;
  --boundary-ink: #090c0f;
  --boundary-panel: #11161a;
  --boundary-line: #364038;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: 76px 0 88px;
  padding: clamp(28px, 5vw, 70px);
  border: 1px solid #3a443b;
  color: var(--boundary-cream);
  background:
    radial-gradient(circle at 92% 2%, rgba(255, 92, 207, 0.13), transparent 25rem),
    radial-gradient(circle at 6% 42%, rgba(217, 255, 98, 0.08), transparent 30rem),
    linear-gradient(145deg, #080b0d, #101417 60%, #090c0f);
  box-shadow: 0 44px 130px rgba(0, 0, 0, 0.45);
}

.boundary-gridwash,
.boundary-scanline {
  position: absolute;
  z-index: -2;
  inset: 0;
  pointer-events: none;
}

.boundary-gridwash {
  opacity: 0.42;
  background-image:
    linear-gradient(rgba(217, 255, 98, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 255, 98, 0.045) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(120deg, #000, transparent 82%);
}

.boundary-scanline {
  z-index: -1;
  opacity: 0.25;
  background: linear-gradient(transparent 49%, rgba(255, 92, 207, 0.12) 50%, transparent 51%);
  background-size: 100% 11px;
}

.boundary-masthead {
  display: grid;
  grid-template-columns: minmax(220px, 0.44fr) minmax(0, 1.36fr);
  align-items: stretch;
  gap: clamp(30px, 6vw, 78px);
}

.boundary-mark {
  position: relative;
  display: grid;
  min-height: 330px;
  align-content: space-between;
  padding: 26px;
  border: 1px solid var(--boundary-lime);
  background:
    linear-gradient(140deg, rgba(217, 255, 98, 0.14), transparent 45%),
    rgba(6, 9, 10, 0.88);
  box-shadow: 10px 10px 0 rgba(255, 92, 207, 0.14);
}

.boundary-mark::before,
.boundary-mark::after {
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--boundary-pink);
  content: "";
}

.boundary-mark::before { top: -6px; left: -6px; border-top: 3px solid; border-left: 3px solid; }
.boundary-mark::after { right: -6px; bottom: -6px; border-right: 3px solid; border-bottom: 3px solid; }

.boundary-mark > span,
.boundary-kicker,
.boundary-room-head span,
.boundary-file-topline,
.boundary-side-label,
.boundary-fact-section > span,
.boundary-gate-section > span,
.boundary-evidence > span,
.boundary-reveal-head > span,
.boundary-sources > span,
.boundary-reveal aside > span,
.boundary-finish > span {
  color: var(--boundary-lime);
  font: 850 10px/1.35 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.boundary-mark > b {
  color: var(--boundary-cream);
  font: 900 clamp(92px, 10vw, 150px)/0.68 var(--mono);
  letter-spacing: -0.12em;
}

.boundary-mark > b span { color: var(--boundary-pink); }

.boundary-mark > strong {
  max-width: 180px;
  color: var(--boundary-cream);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.065em;
}

.boundary-mark > i {
  justify-self: start;
  padding: 7px 9px;
  color: #0b0e0c;
  background: var(--boundary-lime);
  font: 900 9px/1 var(--mono);
  font-style: normal;
  letter-spacing: 0.12em;
}

.boundary-intro { align-self: center; padding: 16px 0; }

.boundary-intro h2 {
  margin: 18px 0 24px;
  max-width: 920px;
  font-size: clamp(54px, 7.6vw, 100px);
  font-weight: 830;
  line-height: 0.84;
  letter-spacing: -0.075em;
}

.boundary-intro h2 em {
  color: var(--boundary-lime);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.boundary-intro > p {
  max-width: 760px;
  margin: 0;
  color: #bec3bc;
  font-size: 17px;
  line-height: 1.66;
}

.boundary-intro-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 30px;
}

.boundary-lab .boundary-primary {
  border-color: var(--boundary-lime);
  color: #0b0e0c;
  background: var(--boundary-lime);
}

.boundary-lab .boundary-primary:hover:not(:disabled) { background: #e7ff91; }

.boundary-lab .boundary-secondary {
  border-color: #596359;
  color: var(--boundary-cream);
  background: rgba(11, 14, 16, 0.72);
}

.boundary-lab .boundary-secondary:hover:not(:disabled) { border-color: var(--boundary-pink); color: #fff; }

.boundary-method-link,
.boundary-text-link,
.boundary-text-button {
  border: 0;
  color: var(--boundary-lime);
  background: transparent;
  font: 800 11px/1.4 var(--mono);
  letter-spacing: 0.05em;
  text-decoration: none;
}

.boundary-text-button { padding: 8px 0; cursor: pointer; }
.boundary-method-link:hover,
.boundary-text-link:hover,
.boundary-text-button:hover { color: var(--boundary-pink); }

.boundary-copy-status { width: 100%; min-height: 1.2em; color: var(--boundary-lime); font: 750 10px/1.3 var(--mono); }

.boundary-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: clamp(45px, 7vw, 82px) 0 36px;
  border-top: 1px solid var(--boundary-line);
  border-bottom: 1px solid var(--boundary-line);
}

.boundary-stats > span { padding: 19px clamp(10px, 2vw, 22px); border-right: 1px solid var(--boundary-line); }
.boundary-stats > span:last-child { border-right: 0; }
.boundary-stats b { display: block; color: var(--boundary-lime); font: 900 clamp(26px, 3.6vw, 44px)/1 var(--mono); letter-spacing: -0.08em; }
.boundary-stats small { display: block; margin-top: 7px; color: var(--boundary-muted); font: 750 9px/1.35 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; }

.boundary-room {
  position: relative;
  scroll-margin-top: 28px;
  border: 1px solid #454e45;
  background: rgba(7, 10, 12, 0.84);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.34);
}

.boundary-room-head {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  padding: 26px 30px;
  border-bottom: 1px solid var(--boundary-line);
}

.boundary-room-head h3 { margin: 7px 0 0; color: var(--boundary-cream); font-size: clamp(20px, 2.5vw, 31px); letter-spacing: -0.04em; }

.boundary-session { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 8px; }
.boundary-session > span,
.boundary-session button { padding: 8px 10px; border: 1px solid #495249; color: var(--boundary-muted); background: transparent; font: 750 10px/1 var(--mono); }
.boundary-session > span b { color: var(--boundary-cream); }
.boundary-session button { cursor: pointer; }
.boundary-session button:hover { border-color: var(--boundary-pink); color: var(--boundary-pink); }

.boundary-nav {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 1px;
  overflow: auto;
  border-bottom: 1px solid var(--boundary-line);
  background: var(--boundary-line);
}

.boundary-nav-item {
  display: grid;
  min-width: 105px;
  min-height: 82px;
  align-content: space-between;
  gap: 9px;
  padding: 13px;
  border: 0;
  color: var(--boundary-muted);
  background: #0d1113;
  text-align: left;
  cursor: pointer;
}

.boundary-nav-item b { color: #697168; font: 900 17px/1 var(--mono); }
.boundary-nav-item span { font: 700 9px/1.25 var(--mono); text-transform: uppercase; }
.boundary-nav-item:hover { color: var(--boundary-cream); background: #151b1c; }
.boundary-nav-item.is-active { color: #0b0e0c; background: var(--boundary-lime); }
.boundary-nav-item.is-active b { color: #0b0e0c; }
.boundary-nav-item.is-revealed:not(.is-active) b { color: var(--boundary-lime); }
.boundary-nav-item.is-revealed b::after { content: " ✓"; color: var(--boundary-lime); font-size: 11px; }
.boundary-nav-item.is-active.is-revealed b::after { color: #0b0e0c; }

.boundary-file { padding: clamp(24px, 4vw, 48px); }
.boundary-file-topline { display: flex; flex-wrap: wrap; gap: 10px 24px; color: var(--boundary-muted); }
.boundary-file-topline span:first-child { color: var(--boundary-pink); }
.boundary-file > h3 { max-width: 950px; margin: 17px 0 14px; color: var(--boundary-cream); font-size: clamp(34px, 5vw, 66px); line-height: 0.96; letter-spacing: -0.06em; }
.boundary-definition { max-width: 850px; margin: 0 0 30px; color: var(--boundary-muted); font-size: 13px; line-height: 1.65; }
.boundary-definition b { color: var(--boundary-lime); }

.boundary-delta {
  display: grid;
  grid-template-columns: 1fr minmax(175px, 0.5fr) 1fr;
  align-items: stretch;
  margin: 28px 0 34px;
  border: 1px solid var(--boundary-line);
  background: #0c1012;
}

.boundary-delta > div { display: grid; align-content: center; min-height: 118px; padding: 20px; }
.boundary-delta > div > span { color: var(--boundary-muted); font: 800 9px/1 var(--mono); letter-spacing: 0.13em; }
.boundary-delta > div > b { margin-top: 10px; color: var(--boundary-cream); font-size: 16px; line-height: 1.3; }
.boundary-delta .boundary-delta-core { position: relative; text-align: center; background: var(--boundary-lime); }
.boundary-delta-core::before,
.boundary-delta-core::after { position: absolute; top: 50%; color: var(--boundary-pink); font: 900 25px/1 var(--mono); transform: translateY(-50%); content: "→"; }
.boundary-delta-core::before { left: -15px; }
.boundary-delta-core::after { right: -15px; }
.boundary-delta .boundary-delta-core span { color: #3d4630; }
.boundary-delta-core strong { margin-top: 10px; color: #0b0e0c; font: 900 16px/1.15 var(--mono); text-transform: uppercase; }

.boundary-split { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
.boundary-side { position: relative; min-width: 0; padding: clamp(20px, 3vw, 30px); border: 1px solid var(--boundary-line); background: linear-gradient(150deg, rgba(25, 31, 33, 0.84), rgba(11, 14, 16, 0.92)); }
.boundary-side[data-kind="changed"] { border-top-color: var(--boundary-pink); }
.boundary-side[data-kind="baseline"] { border-top-color: var(--boundary-lime); }
.boundary-side-label { display: flex; justify-content: space-between; gap: 16px; }
.boundary-side-label i { max-width: 58%; overflow: hidden; color: var(--boundary-muted); font-style: normal; text-align: right; text-overflow: ellipsis; white-space: nowrap; }
.boundary-side > h4 { margin: 20px 0 10px; color: var(--boundary-cream); font-size: clamp(24px, 3.1vw, 38px); line-height: 1; letter-spacing: -0.055em; }
.boundary-side > p { min-height: 4.8em; margin: 0 0 23px; color: #b6bdb6; font-size: 13px; line-height: 1.58; }

.boundary-fact-section,
.boundary-gate-section { margin-top: 20px; }
.boundary-facts { margin-top: 9px; border-top: 1px solid #303831; }
.boundary-fact { display: grid; grid-template-columns: minmax(110px, 0.65fr) 1fr; gap: 15px; padding: 9px 0; border-bottom: 1px solid #303831; }
.boundary-fact span { color: var(--boundary-muted); font: 700 10px/1.3 var(--mono); text-transform: uppercase; }
.boundary-fact b { min-width: 0; overflow-wrap: anywhere; color: var(--boundary-cream); font: 700 11px/1.4 var(--mono); }

.boundary-gates { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; margin-top: 9px; }
.boundary-gate { display: grid; grid-template-columns: 22px 1fr; gap: 8px; align-items: start; padding: 10px; border: 1px solid #333b34; background: #0b0f11; }
.boundary-gate i { display: grid; width: 19px; height: 19px; place-items: center; border-radius: 50%; color: #0b0e0c; background: #768077; font: 900 12px/1 var(--mono); font-style: normal; }
.boundary-gate.is-satisfied i { background: var(--boundary-lime); }
.boundary-gate.is-failed i { color: #fff; background: var(--boundary-pink); }
.boundary-gate b,
.boundary-gate small { display: block; font: 750 9px/1.3 var(--mono); }
.boundary-gate b { color: var(--boundary-cream); }
.boundary-gate small { margin-top: 4px; color: var(--boundary-muted); text-transform: uppercase; }

.boundary-evidence { margin-top: 20px; }
.boundary-evidence-list { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.boundary-evidence-list small { padding: 6px 8px; border: 1px solid #3b443c; color: #bac1ba; font: 700 8px/1.2 var(--mono); text-transform: uppercase; }
.boundary-evidence-list .is-held { border-color: rgba(217, 255, 98, 0.35); color: var(--boundary-lime); }
.boundary-evidence-list .is-missing { border-color: rgba(255, 92, 207, 0.48); color: var(--boundary-pink); }

.boundary-choices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; margin: 24px 0 0; padding: 15px; border: 1px solid #3a433a; }
.boundary-choices legend { padding: 0 7px; color: var(--boundary-muted); font: 800 9px/1 var(--mono); letter-spacing: 0.08em; }
.boundary-choices button { min-width: 0; padding: 12px 6px; border: 1px solid #424b43; color: var(--boundary-muted); background: #0a0e10; cursor: pointer; }
.boundary-choices button b,
.boundary-choices button small { display: block; }
.boundary-choices button b { color: var(--boundary-cream); font: 850 11px/1 var(--mono); text-transform: uppercase; }
.boundary-choices button small { margin-top: 5px; font: 650 8px/1 var(--mono); }
.boundary-choices button:hover:not(:disabled) { border-color: var(--boundary-lime); }
.boundary-choices button.is-selected { border-color: var(--boundary-pink); background: rgba(255, 92, 207, 0.11); }
.boundary-choices button.is-correct { border-color: var(--boundary-lime); background: rgba(217, 255, 98, 0.09); }
.boundary-choices button.is-wrong { border-color: var(--boundary-pink); background: rgba(255, 92, 207, 0.14); }

.boundary-divider { position: absolute; z-index: 2; top: 50%; left: 50%; display: grid; width: 48px; height: 48px; place-items: center; border: 2px solid var(--boundary-pink); border-radius: 50%; color: #0b0e0c; background: var(--boundary-lime); box-shadow: 0 0 0 8px #0b0f11; transform: translate(-50%, -50%); }
.boundary-divider span { font: 900 23px/1 var(--mono); }

.boundary-oracle { margin-top: 12px; padding: 13px; border: 1px solid var(--boundary-line); background: #090d0e; }
.boundary-oracle span,
.boundary-oracle b,
.boundary-oracle code { display: block; }
.boundary-oracle span { color: var(--boundary-muted); font: 800 8px/1 var(--mono); letter-spacing: 0.1em; }
.boundary-oracle b { margin-top: 7px; color: var(--boundary-lime); font: 800 11px/1.35 var(--mono); text-transform: uppercase; }
.boundary-oracle.is-block b { color: var(--boundary-pink); }
.boundary-oracle code { margin-top: 6px; color: #bcc3bc; font-size: 10px; overflow-wrap: anywhere; }

.boundary-choice-status { margin: 25px auto 10px; color: var(--boundary-muted); font: 700 11px/1.5 var(--mono); text-align: center; }
.boundary-reveal-button { display: block; margin: 0 auto; }
.boundary-reveal-button:disabled { opacity: 0.34; cursor: not-allowed; }

.boundary-reveal { margin-top: 34px; padding: clamp(23px, 4vw, 42px); border: 1px solid var(--boundary-lime); background: linear-gradient(145deg, rgba(217, 255, 98, 0.08), rgba(255, 92, 207, 0.055)); }
.boundary-reveal-head h4 { margin: 8px 0 25px; color: var(--boundary-cream); font-size: clamp(28px, 4vw, 48px); line-height: 1; letter-spacing: -0.055em; }
.boundary-oracle-flow { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: center; }
.boundary-oracle-flow > div { min-height: 90px; padding: 17px; border: 1px solid var(--boundary-line); background: #0b0f10; }
.boundary-oracle-flow span { color: var(--boundary-muted); font: 800 9px/1 var(--mono); letter-spacing: 0.1em; }
.boundary-oracle-flow b { display: block; margin-top: 9px; color: var(--boundary-lime); font: 900 21px/1 var(--mono); text-transform: uppercase; }
.boundary-oracle-flow > div:last-child b { color: var(--boundary-pink); }
.boundary-oracle-flow > strong { color: var(--boundary-pink); font: 900 30px/1 var(--mono); }
.boundary-reveal > p { max-width: 900px; margin: 24px 0; color: var(--boundary-cream); font-size: 16px; line-height: 1.65; }
.boundary-reveal aside { padding: 17px 20px; border-left: 3px solid var(--boundary-pink); background: rgba(255, 92, 207, 0.07); }
.boundary-reveal aside p { margin: 7px 0 0; color: #c2c7c0; font-size: 13px; line-height: 1.55; }
.boundary-sources { display: flex; flex-wrap: wrap; gap: 8px 15px; align-items: center; margin-top: 22px; }
.boundary-sources a { color: var(--boundary-cream); font: 700 10px/1.3 var(--mono); }
.boundary-sources a:hover { color: var(--boundary-lime); }
.boundary-release-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px; margin-top: 28px; }
.boundary-action-status { display: block; min-height: 1.4em; margin-top: 13px; color: var(--boundary-lime); font: 750 10px/1.4 var(--mono); }

.boundary-finish { margin: 0 32px 32px; padding: clamp(25px, 4vw, 42px); border: 1px solid var(--boundary-pink); background: linear-gradient(135deg, rgba(255, 92, 207, 0.1), rgba(217, 255, 98, 0.05)); text-align: center; }
.boundary-finish h3 { margin: 10px 0; color: var(--boundary-cream); font-size: clamp(27px, 4.3vw, 49px); letter-spacing: -0.06em; }
.boundary-finish h3 b { color: var(--boundary-lime); }
.boundary-finish p { max-width: 760px; margin: 0 auto 20px; color: var(--boundary-muted); line-height: 1.6; }
.boundary-finish > div { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

.boundary-boundary { margin: 25px 0 0; padding: 15px 18px; border: 1px solid #3a433b; color: var(--boundary-muted); background: rgba(7, 10, 11, 0.62); font: 650 11px/1.55 var(--mono); }
.boundary-boundary b { color: var(--boundary-pink); }
.boundary-lab [hidden] { display: none !important; }

@media (max-width: 1080px) {
  .boundary-masthead { grid-template-columns: minmax(190px, 0.42fr) 1fr; gap: 34px; }
  .boundary-mark { min-height: 300px; }
  .boundary-gates { grid-template-columns: 1fr; }
  .boundary-choices { grid-template-columns: 1fr; }
  .boundary-choices button { display: flex; justify-content: space-between; align-items: center; padding: 11px; }
  .boundary-choices button small { margin: 0; }
}

@media (max-width: 820px) {
  .boundary-masthead { grid-template-columns: 1fr; }
  .boundary-mark { min-height: 245px; }
  .boundary-mark > b { font-size: 100px; }
  .boundary-mark > strong { justify-self: end; text-align: right; }
  .boundary-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .boundary-stats > span { border-bottom: 1px solid var(--boundary-line); }
  .boundary-stats > span:nth-child(2n) { border-right: 0; }
  .boundary-stats > span:last-child { grid-column: 1 / -1; border-bottom: 0; }
  .boundary-room-head { display: grid; }
  .boundary-session { justify-content: flex-start; }
  .boundary-nav { grid-template-columns: repeat(8, 118px); }
  .boundary-delta { grid-template-columns: 1fr; }
  .boundary-delta > div { min-height: auto; }
  .boundary-delta-core::before { top: -15px; left: 50%; transform: translateX(-50%) rotate(90deg); }
  .boundary-delta-core::after { top: auto; right: auto; bottom: -15px; left: 50%; transform: translateX(-50%) rotate(90deg); }
  .boundary-split { grid-template-columns: 1fr; }
  .boundary-side > p { min-height: 0; }
  .boundary-divider { top: 50%; }
}

@media (max-width: 600px) {
  .boundary-lab { margin-inline: -12px; padding: 23px 12px; }
  .boundary-intro h2 { font-size: 48px; }
  .boundary-intro-actions .button,
  .boundary-intro-actions .boundary-method-link { width: 100%; text-align: center; }
  .boundary-file { padding: 23px 13px; }
  .boundary-file > h3 { font-size: 36px; }
  .boundary-file-topline { display: grid; }
  .boundary-side { padding: 20px 14px; }
  .boundary-fact { grid-template-columns: 1fr; gap: 4px; }
  .boundary-divider { width: 38px; height: 38px; }
  .boundary-oracle-flow { grid-template-columns: 1fr; }
  .boundary-oracle-flow > strong { justify-self: center; transform: rotate(90deg); }
  .boundary-release-actions .button,
  .boundary-release-actions .boundary-text-link,
  .boundary-release-actions .boundary-text-button { width: 100%; text-align: center; }
  .boundary-finish { margin: 0 13px 20px; }
  .boundary-finish .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .boundary-lab *,
  .boundary-lab *::before,
  .boundary-lab *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}