:root {
  --nav-height: 78px;
  --navy: #071522;
  --ink: #0b1824;
  --ivory: #f2ead9;
  --muted: #a8b3bb;
  --cyan: #70d7ec;
  --amber: #d5a45f;
}

* { box-sizing: border-box; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html {
  scroll-behavior: smooth;
  background: var(--navy);
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  background: var(--navy);
  color: var(--ivory);
  font-family: Arial, Helvetica, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  z-index: 0;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgb(3 14 24 / 22%), transparent 48%, rgb(3 12 20 / 8%)),
    url('./assets/alt-text-drafting-desk-locked.png');
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

a { color: inherit; }

.site-nav {
  position: sticky;
  z-index: 20;
  top: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 4vw, 66px);
  border-bottom: 1px solid rgb(210 226 235 / 17%);
  background: rgb(4 14 22 / 92%);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  text-decoration: none;
}

.brand span {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 22px;
  font-style: italic;
}

.brand small,
.site-nav nav a,
.eyebrow,
.method-label,
.method-number,
.case-meta {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  text-transform: uppercase;
}

.brand small {
  color: rgb(237 232 218 / 45%);
  font-size: 8px;
  letter-spacing: 0.22em;
}

.site-nav nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.6vw, 42px);
}

.site-nav nav a {
  position: relative;
  padding: 31px 0 29px;
  color: rgb(237 232 218 / 50%);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.site-nav nav a:hover,
.site-nav nav a:focus-visible,
.site-nav nav .active { color: #7ce1b3; }

.site-nav nav .active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 19px;
  left: 0;
  height: 1px;
  background: currentColor;
}

.background-study {
  position: relative;
  z-index: 1;
}

.intro {
  position: relative;
  min-height: calc(100svh - var(--nav-height));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 390px);
  grid-template-rows: 1fr auto;
  gap: 48px clamp(48px, 8vw, 130px);
  padding: clamp(64px, 8vh, 110px) clamp(28px, 7vw, 118px) 36px;
}

.intro-copy {
  align-self: center;
  max-width: 900px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0 0 24px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.28em;
}

.eyebrow span {
  width: 42px;
  height: 1px;
  background: currentColor;
}

h1 {
  max-width: 860px;
  margin: 0;
  color: #fff9ec;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(70px, 9.5vw, 150px);
  font-weight: 400;
  line-height: 0.83;
  letter-spacing: -0.065em;
  text-wrap: balance;
  text-shadow: 0 8px 40px rgb(0 0 0 / 28%);
}

.definition {
  max-width: 790px;
  margin: 42px 0 0 58px;
  color: rgb(242 240 230 / 80%);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(18px, 1.45vw, 24px);
  line-height: 1.65;
}

.method {
  --method-step-size: calc(34px + 4pt);
  align-self: center;
  padding-top: 52px;
  transform: translateX(-16px);
}

.method-label {
  margin: 0 0 24px;
  color: #fff;
  font-size: calc(9px + 4pt);
  font-weight: 700;
  letter-spacing: 0.24em;
}

.method ol {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.method ol::before {
  content: "";
  position: absolute;
  top: 31px;
  bottom: 31px;
  left: calc(var(--method-step-size) / 2);
  width: 1px;
  background: linear-gradient(var(--cyan), rgb(112 215 236 / 15%));
}

.method li {
  position: relative;
  display: grid;
  grid-template-columns: var(--method-step-size) 1fr;
  gap: 21px;
  align-items: start;
  padding: 18px 0 24px;
  border-top: 1px solid rgb(216 228 234 / 16%);
}

.method-number {
  position: relative;
  z-index: 1;
  display: grid;
  width: var(--method-step-size);
  height: var(--method-step-size);
  place-items: center;
  border: 1px solid rgb(112 215 236 / 62%);
  border-radius: 50%;
  background: #fffdf8;
  color: var(--navy);
  font-size: calc(8px + 4pt);
  letter-spacing: 0.08em;
  box-shadow: 0 0 22px rgb(77 205 235 / 24%);
}

.method strong,
.method small { display: block; }

.method strong {
  margin: 1px 0 8px;
  color: #eff5f5;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: calc(24px + 4pt);
  font-weight: 400;
}

.method small {
  color: var(--muted);
  font-size: calc(13px + 4pt);
  line-height: 1.55;
}

.intro-bridge {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: baseline;
  padding-top: 25px;
  border-top: 1px solid rgb(216 228 234 / 17%);
}

.intro-bridge p,
.intro-bridge strong {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(16px, 1.3vw, 20px);
}

.intro-bridge p {
  color: var(--amber);
  font-style: italic;
}

.intro-bridge strong {
  color: rgb(242 240 230 / 75%);
  font-weight: 400;
}

.intro-bridge a {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
}

.intro-bridge a span {
  display: inline-block;
  margin-left: 9px;
  transition: transform 180ms ease;
}

.intro-bridge a:hover span { transform: translateY(4px); }

.case-threshold {
  min-height: 58svh;
  padding: 90px clamp(22px, 7vw, 118px) 0;
}

.specimen-sheet {
  width: min(1320px, 100%);
  min-height: 900px;
  margin: 0 auto;
  padding: clamp(34px, 5vw, 76px);
  border-radius: 3px 3px 0 0;
  background:
    linear-gradient(105deg, rgb(143 115 70 / 8%), transparent 28%),
    #efe6d2;
  color: var(--ink);
  box-shadow: 0 -10px 60px rgb(0 0 0 / 25%);
}

.case-meta {
  display: flex;
  gap: 32px;
  color: #8b6437;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.specimen-sheet h2 {
  max-width: 900px;
  margin: 38px 0 0;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(42px, 6vw, 88px);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.case-intro {
  margin: 32px 0 0;
  color: #6e675c;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.5;
}

.case-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
  margin-top: 52px;
}

.ladybug-figure {
  position: relative;
  margin: 0;
}

.ladybug-crop {
  position: relative;
  aspect-ratio: 3.15 / 1;
  overflow: hidden;
  border: 1px solid rgb(50 43 32 / 13%);
  background: #e9dfca;
  box-shadow: 0 14px 32px rgb(62 45 25 / 15%);
}

.ladybug-crop img {
  position: absolute;
  top: -57.5%;
  left: -13.2%;
  width: 126.5%;
  max-width: none;
}

.ladybug-figure figcaption {
  margin-top: 12px;
  color: #8a806e;
  font: 8px/1.4 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hotspot {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 35px;
  padding: 5px 13px 5px 5px;
  border: 1px solid rgb(126 226 242 / 72%);
  border-radius: 999px;
  background: rgb(7 21 34 / 91%);
  color: #dffbff;
  font: 700 8px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  box-shadow: 0 0 18px rgb(73 213 238 / 26%);
  cursor: pointer;
}

.hotspot span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  background: #103044;
  color: var(--cyan);
}

.hotspot:hover,
.hotspot:focus-visible {
  outline: none;
  border-color: #b6f7ff;
  box-shadow: 0 0 0 3px rgb(88 221 240 / 24%), 0 0 24px rgb(73 213 238 / 52%);
}

/* Case 01: botanical field-note labels tied directly to the illustration. */
.ladybug-figure .hotspot {
  --leader-length: 82px;
  --leader-angle: -24deg;
  isolation: isolate;
  min-height: 38px;
  padding: 6px 14px 6px 6px;
  border: 1px solid rgb(146 91 59 / 58%);
  border-radius: 4px;
  background: rgb(250 244 226 / 96%);
  color: var(--navy);
  box-shadow: 0 7px 18px rgb(46 34 19 / 20%), inset 0 0 0 1px rgb(255 255 255 / 65%);
}

.ladybug-figure .hotspot span {
  width: 25px;
  height: 25px;
  background: #c94231;
  color: #fff8e8;
  box-shadow: inset 0 0 0 1px rgb(91 24 16 / 34%), 0 2px 5px rgb(91 24 16 / 20%);
}

.ladybug-figure .hotspot::after {
  position: absolute;
  z-index: -1;
  top: calc(50% - 4px);
  left: calc(100% - 2px);
  width: var(--leader-length);
  height: 9px;
  background:
    radial-gradient(circle at calc(100% - 4px) 50%, #eefcff 0 2px, var(--cyan) 2.5px 4px, transparent 4.5px),
    linear-gradient(var(--cyan), var(--cyan)) left center / calc(100% - 7px) 1px no-repeat;
  content: "";
  opacity: 0.72;
  transform: rotate(var(--leader-angle));
  transform-origin: left center;
  transition: opacity 160ms ease, filter 160ms ease;
  pointer-events: none;
}

.ladybug-figure .hotspot-translation {
  --leader-length: 72px;
  --leader-angle: 22deg;
}

.ladybug-figure .hotspot-access {
  --leader-length: 88px;
  --leader-angle: 20deg;
}

.ladybug-figure .hotspot-access::after {
  right: calc(100% - 2px);
  left: auto;
  background:
    radial-gradient(circle at 4px 50%, #eefcff 0 2px, var(--cyan) 2.5px 4px, transparent 4.5px),
    linear-gradient(var(--cyan), var(--cyan)) right center / calc(100% - 7px) 1px no-repeat;
  transform-origin: right center;
}

.ladybug-figure .hotspot:hover,
.ladybug-figure .hotspot:focus-visible {
  border-color: rgb(201 66 49 / 84%);
  box-shadow: 0 0 0 3px rgb(88 221 240 / 18%), 0 9px 22px rgb(46 34 19 / 24%);
}

.ladybug-figure .hotspot:hover span,
.ladybug-figure .hotspot:focus-visible span {
  box-shadow: inset 0 0 0 1px rgb(91 24 16 / 34%), 0 0 13px rgb(221 61 43 / 62%);
}

.ladybug-figure .hotspot:hover::after,
.ladybug-figure .hotspot:focus-visible::after {
  opacity: 1;
  filter: drop-shadow(0 0 4px rgb(73 213 238 / 72%));
}

.hotspot-purpose { top: 31%; left: 24%; }

.hotspot-translation {
  top: 38%;
  left: 51%;
  border-color: rgb(231 129 88 / 90%);
  box-shadow: 0 0 18px rgb(221 91 60 / 30%);
}

.hotspot-translation span {
  background: #512720;
  color: #ffd5bd;
}

.hotspot-access { top: 48%; right: 7%; }

.case-guide {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: 28px;
  border-left: 1px solid rgb(80 65 43 / 18%);
}

.case-guide > p {
  margin: 0 0 16px;
  color: #a16d37;
  font: 700 9px/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.case-guide > strong {
  color: #3d392f;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
}

.case-guide > div {
  display: flex;
  gap: 10px;
  margin-top: auto;
  padding-top: 28px;
}

.case-guide > div span {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid #ae9e83;
  border-radius: 50%;
  color: #806f53;
  font: 8px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.case-dialog {
  width: min(530px, calc(100% - 30px));
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid rgb(112 215 236 / 54%);
  border-radius: 12px;
  background: rgb(5 20 31 / 97%);
  color: #e9f0ef;
  box-shadow: 0 30px 90px rgb(0 0 0 / 68%), 0 0 40px rgb(80 210 236 / 12%);
}

.case-dialog::backdrop {
  background: rgb(0 6 11 / 70%);
  backdrop-filter: blur(4px);
}

.dialog-close {
  position: absolute;
  top: 15px;
  right: 17px;
  width: 38px;
  height: 38px;
  border: 0;
  background: transparent;
  color: #b7c1c4;
  font-size: 28px;
  font-weight: 200;
  cursor: pointer;
}

.dialog-close:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.dialog-kicker {
  margin: 0 0 20px;
  color: var(--amber);
  font: 700 9px/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.case-dialog h3 {
  margin: 0 42px 22px 0;
  color: #fff8ea;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(31px, 4vw, 47px);
  font-weight: 400;
  line-height: 1.03;
  letter-spacing: -0.035em;
}

.case-dialog > p:not(.dialog-kicker) {
  margin: 0;
  color: #b9c4c8;
  font-size: 15px;
  line-height: 1.7;
}

.dialog-note,
.comparison {
  margin-top: 24px;
  padding: 18px 20px;
  border: 1px solid rgb(197 219 227 / 16%);
  border-radius: 8px;
  background: rgb(255 255 255 / 3%);
}

.dialog-note span,
.comparison span {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font: 700 8px/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.dialog-note strong {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.45;
}

.comparison p {
  margin: 0;
  color: #e6eceb;
  font-size: 14px;
  line-height: 1.6;
}

.comparison p + p {
  margin-top: 10px;
  color: #fff9ed;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 17px;
}

.comparison-wrong { border-color: rgb(234 112 87 / 28%); }
.comparison-wrong span { color: #ff876f; }

/* Case 01 dialogs continue the botanical field-note visual language. */
.ladybug-dialog {
  border-color: rgb(76 190 211 / 78%);
  border-radius: 7px;
  background:
    radial-gradient(circle at 14% 12%, rgb(255 255 255 / 58%), transparent 31%),
    radial-gradient(circle at 86% 88%, rgb(199 170 111 / 10%), transparent 34%),
    #f7f0dd;
  color: var(--navy);
  box-shadow:
    0 30px 90px rgb(0 0 0 / 54%),
    0 0 0 4px rgb(247 240 221 / 72%),
    0 0 0 5px rgb(76 190 211 / 34%),
    inset 0 0 0 1px rgb(255 255 255 / 82%);
}

.ladybug-dialog .dialog-close { color: var(--navy); }
.ladybug-dialog .dialog-close:hover { color: #c94231; }

.ladybug-dialog .dialog-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: #b83226;
}

.ladybug-dialog .dialog-kicker span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: #c94231;
  color: #fff8e8;
  box-shadow: inset 0 0 0 1px rgb(91 24 16 / 34%), 0 2px 6px rgb(91 24 16 / 20%);
}

.ladybug-dialog h3 { color: var(--navy); }
.ladybug-dialog > p:not(.dialog-kicker) { color: #4b4a43; }

.ladybug-dialog .dialog-note,
.ladybug-dialog .comparison {
  border-color: rgb(76 190 211 / 45%);
  border-radius: 4px;
  background: rgb(255 252 241 / 66%);
  box-shadow: inset 3px 0 0 rgb(76 190 211 / 72%);
}

.ladybug-dialog .dialog-note span,
.ladybug-dialog .comparison span { color: #18768b; }

.ladybug-dialog .dialog-note strong,
.ladybug-dialog .comparison p { color: var(--navy); }

.ladybug-dialog .comparison-wrong {
  border-color: rgb(201 66 49 / 36%);
  background: rgb(201 66 49 / 5%);
  box-shadow: inset 3px 0 0 rgb(201 66 49 / 72%);
}

.ladybug-dialog .comparison-wrong span { color: #b83226; }
.ladybug-dialog .comparison p + p { color: #25384a; }

/* Case 02 dialogs read as enlarged scientific reference plates. */
.science-dialog {
  border: 1px solid rgb(65 174 204 / 78%);
  border-radius: 3px;
  background-color: #f6f0df;
  background-image:
    linear-gradient(rgb(78 184 210 / 13%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(78 184 210 / 13%) 1px, transparent 1px),
    radial-gradient(circle at 14% 10%, rgb(255 255 255 / 70%), transparent 36%);
  background-size: 24px 24px, 24px 24px, 100% 100%;
  color: var(--navy);
  box-shadow:
    0 30px 90px rgb(0 0 0 / 58%),
    0 0 0 4px rgb(246 240 223 / 75%),
    0 0 0 5px rgb(65 174 204 / 34%);
}

.science-dialog .dialog-close { color: var(--navy); }
.science-dialog .dialog-close:hover { color: #d74129; }

.science-dialog .dialog-kicker {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 22px;
  color: var(--navy);
}

.science-dialog .dialog-kicker span {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 50%;
  background: #d74129;
  color: #fff9e9;
  box-shadow: inset 0 0 0 1px rgb(101 26 14 / 28%), 0 2px 6px rgb(101 26 14 / 20%);
}

.science-dialog h3 { color: var(--navy); }
.science-dialog > p:not(.dialog-kicker) { color: #3d4950; }

.science-dialog .dialog-note {
  position: relative;
  border-color: rgb(65 174 204 / 52%);
  border-radius: 1px;
  background: rgb(252 249 237 / 74%);
  box-shadow: inset 4px 0 0 #d74129;
}

.science-dialog .dialog-note::after {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 7px;
  height: 7px;
  border-top: 1px solid #319dbb;
  border-right: 1px solid #319dbb;
  content: "";
}

.science-dialog .dialog-note span { color: #197d98; }
.science-dialog .dialog-note strong { color: var(--navy); }

/* Case 03 dialogs echo pale moth wings resting against birch bark. */
.moth-dialog {
  border: 1px solid rgb(166 137 76 / 66%);
  border-radius: 6px;
  background-color: #f3f0e6;
  background-image:
    linear-gradient(94deg, transparent 0 13%, rgb(88 78 63 / 5%) 14%, transparent 15% 67%, rgb(88 78 63 / 4%) 69%, transparent 71%),
    repeating-linear-gradient(0deg, transparent 0 17px, rgb(92 79 59 / 6%) 18px, transparent 19px 31px),
    radial-gradient(ellipse at 18% 12%, rgb(255 255 255 / 72%), transparent 38%);
  color: var(--navy);
  box-shadow:
    0 30px 90px rgb(0 0 0 / 56%),
    0 0 0 4px rgb(243 240 230 / 74%),
    0 0 0 5px rgb(184 138 72 / 30%);
}

.moth-dialog .dialog-close { color: #37453f; }
.moth-dialog .dialog-close:hover { color: #987034; }

.moth-dialog .dialog-kicker {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 22px;
  color: #6d6f47;
}

.moth-dialog .dialog-kicker span {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border: 1px solid rgb(103 73 31 / 32%);
  border-radius: 50%;
  background: #c79b54;
  color: #172b36;
  box-shadow: inset 0 0 0 1px rgb(255 239 191 / 45%), 0 2px 6px rgb(75 54 24 / 20%);
}

.moth-dialog h3 { color: #1a303b; }
.moth-dialog > p:not(.dialog-kicker) { color: #424943; }

.moth-dialog .dialog-note {
  border: 1px solid rgb(118 139 99 / 42%);
  border-radius: 4px;
  background: rgb(218 229 194 / 54%);
  box-shadow: inset 3px 0 0 #b68a47;
}

.moth-dialog .dialog-note span { color: #647047; }
.moth-dialog .dialog-note strong { color: #1a303b; }

.moth-dialog code {
  padding: 1px 5px;
  border: 1px solid rgb(118 139 99 / 35%);
  border-radius: 3px;
  background: rgb(255 255 255 / 48%);
  color: #4d593b;
}

.case-threshold {
  min-height: 100svh;
  padding: clamp(76px, 9vw, 140px) clamp(18px, 4vw, 66px);
}

.case-stage {
  width: min(1510px, 100%);
  margin: 0 auto;
}

.case-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px 40px;
  align-items: end;
  margin-bottom: 40px;
  padding-inline: clamp(4px, 2vw, 28px);
}

.case-heading .case-meta {
  grid-column: 1 / -1;
  color: var(--amber);
}

.case-heading h2 {
  max-width: 860px;
  margin: 0;
  color: #fff8e9;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(42px, 5.3vw, 82px);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.case-heading .case-intro {
  max-width: 340px;
  margin: 0 0 7px;
  color: rgb(226 234 233 / 65%);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 1.55;
}

.case-workspace {
  display: block;
  margin-top: 0;
}

.ladybug-figure { width: 100%; }

.bond-figure {
  position: relative;
  width: 100%;
  margin: 0;
}

.moth-figure {
  position: relative;
  width: 100%;
  margin: 0;
}

.ladybug-art {
  position: relative;
  overflow: hidden;
  aspect-ratio: 2.015 / 1;
  border: 1px solid rgb(231 220 194 / 40%);
  border-radius: 5px;
  background: #f2ead9;
  box-shadow: 0 28px 72px rgb(0 0 0 / 38%);
}

.ladybug-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bond-art {
  position: relative;
  overflow: hidden;
  aspect-ratio: 2 / 1;
  container-type: inline-size;
  border: 1px solid rgb(112 215 236 / 28%);
  border-radius: 5px;
  background: #06192b;
  box-shadow: 0 28px 72px rgb(0 0 0 / 42%), 0 0 50px rgb(61 191 220 / 8%);
}

.bond-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.moth-art {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 1px solid rgb(231 220 194 / 40%);
  border-radius: 5px;
  background: #f2efe7;
  box-shadow: 0 28px 72px rgb(0 0 0 / 38%);
}

.moth-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.plate-copy {
  position: absolute;
  inset: 0;
  color: #17283a;
  pointer-events: none;
}

.plate-copy p { margin: 0; }

.plate-motto,
.plate-title span,
.stage-label,
.diagram-label,
.plate-footer {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  text-transform: uppercase;
}

.plate-motto {
  position: absolute;
  top: 5.3%;
  font-size: 0.86cqw;
  line-height: 1.45;
  letter-spacing: 0.24em;
}

.plate-motto-left { left: 4.2%; }
.plate-motto-right { right: 4.9%; text-align: center; }

.plate-title {
  position: absolute;
  top: 0.7%;
  left: 19%;
  width: 62%;
  text-align: center;
}

.plate-title strong {
  display: block;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 5.1cqw;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.plate-title span {
  display: block;
  margin-top: 0.2%;
  color: #289bc8;
  font-size: 1.8cqw;
  font-weight: 700;
  letter-spacing: 0.32em;
}

.stage-label {
  position: absolute;
  top: 18.65%;
  display: flex;
  align-items: center;
  gap: 1.4cqw;
  font-size: 1.72cqw;
  font-weight: 800;
  letter-spacing: 0.11em;
  white-space: nowrap;
}

.stage-label b {
  display: grid;
  width: 3.3cqw;
  height: 3.3cqw;
  place-items: center;
  border-radius: 50%;
  background: #dc3e1e;
  color: #fff8e8;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 2.25cqw;
  line-height: 1;
}

.stage-label-one { left: 3%; }
.stage-label-two { left: 36.1%; }
.stage-label-three { left: 69.9%; }

.atom-letter {
  position: absolute;
  translate: -50% -50%;
  color: #172331;
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 700;
  line-height: 1;
}

.atom-o { font-size: 3.9cqw; }
.atom-h { font-size: 2.5cqw; }
.atom-o-one { top: 44.1%; left: 17.55%; }
.atom-h-one-a { top: 65.9%; left: 8.55%; }
.atom-h-one-b { top: 65.9%; left: 25.75%; }
.atom-o-two { top: 44.1%; left: 50.4%; }
.atom-h-two-a { top: 62%; left: 42.45%; }
.atom-h-two-b { top: 62%; left: 58.35%; }
.atom-o-three { top: 45.7%; left: 83.35%; }
.atom-h-three-a { top: 62%; left: 73.35%; }
.atom-h-three-b { top: 62%; left: 92.35%; }

.diagram-label {
  position: absolute;
  font-size: 1.18cqw;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.025em;
}

.label-oxygen { top: 29.6%; left: 4%; }
.label-valence { top: 42.2%; left: 26.65%; }
.label-hydrogen-a { top: 80.4%; left: 8%; }
.label-hydrogen-b { top: 80.4%; left: 24.15%; }
.label-shared { top: 74%; left: 43.4%; }
.label-bond { top: 72.2%; left: 78.2%; }

.plate-footer {
  position: absolute;
  bottom: 3.4%;
  font-size: 0.7cqw;
  letter-spacing: 0.23em;
}

.plate-number { left: 4.2%; }
.plate-note { left: 40.65%; }
.plate-credit { right: 4%; }

.bond-figure figcaption {
  margin: 18px 0 0;
  color: #fff;
  font: 9px/1.4 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.14em;
  text-align: center;
  text-transform: uppercase;
}

.moth-figure figcaption {
  margin: 18px 0 0;
  color: #fff;
  font: 9px/1.4 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.14em;
  text-align: center;
  text-transform: uppercase;
}

.case-two {
  padding-top: clamp(62px, 8vw, 118px);
  background: linear-gradient(180deg, transparent, rgb(2 12 22 / 38%) 18%, rgb(2 12 22 / 50%));
}

.case-three {
  padding-top: clamp(62px, 8vw, 118px);
  background: linear-gradient(180deg, rgb(2 12 22 / 50%), rgb(2 12 22 / 26%) 28%, rgb(2 12 22 / 48%));
}

.bond-hotspot { top: auto; }
.bond-orient {
  top: 27%;
  bottom: auto;
  left: 26.5%;
}
.bond-sequence {
  top: 34%;
  bottom: auto;
  left: 36.5%;
  border-color: rgb(225 169 88 / 88%);
  box-shadow: 0 0 18px rgb(213 164 95 / 24%);
}
.bond-sequence span {
  background: #49361d;
  color: #ffe0a8;
}
.bond-connect {
  top: 79.5%;
  right: auto;
  bottom: auto;
  left: 83.5%;
  transform: translateX(-50%);
}

/* Case 02 hotspots borrow the diagram's own technical annotation system. */
.bond-figure .bond-hotspot {
  min-height: 38px;
  padding: 6px 14px 6px 6px;
  border: 1px solid rgb(65 174 204 / 78%);
  border-radius: 2px;
  background-color: rgb(248 243 226 / 97%);
  background-image:
    linear-gradient(rgb(78 184 210 / 13%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(78 184 210 / 13%) 1px, transparent 1px);
  background-size: 10px 10px;
  color: var(--navy);
  box-shadow: 0 7px 18px rgb(13 29 40 / 24%), inset 0 0 0 1px rgb(255 255 255 / 70%);
}

.bond-figure .bond-hotspot span {
  width: 25px;
  height: 25px;
  background: #d74129;
  color: #fff9e9;
  box-shadow: inset 0 0 0 1px rgb(101 26 14 / 28%), 0 2px 5px rgb(101 26 14 / 18%);
}

.bond-figure .bond-hotspot::after,
.bond-figure .bond-hotspot::before {
  position: absolute;
  content: "";
  pointer-events: none;
  transition: opacity 160ms ease, filter 160ms ease;
}

.bond-figure .bond-orient::after {
  top: 50%;
  left: 100%;
  width: 62px;
  height: 42px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
}

.bond-figure .bond-orient::before {
  top: calc(50% + 38px);
  left: calc(100% + 58px);
  width: 7px;
  height: 7px;
  border: 1px solid #e7fbff;
  border-radius: 50%;
  background: var(--cyan);
}

.bond-figure .bond-sequence::after {
  top: 50%;
  left: 100%;
  width: 72px;
  height: 50px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
}

.bond-figure .bond-sequence::before {
  top: calc(50% + 46px);
  left: calc(100% + 68px);
  width: 7px;
  height: 7px;
  border: 1px solid #e7fbff;
  border-radius: 50%;
  background: var(--cyan);
}

.bond-figure .bond-connect::after {
  right: auto;
  bottom: 100%;
  left: 50%;
  width: 1px;
  height: 26px;
  background: var(--cyan);
}

.bond-figure .bond-connect::before {
  bottom: calc(100% + 22px);
  left: calc(50% - 3px);
  width: 7px;
  height: 7px;
  border: 1px solid #e7fbff;
  border-radius: 50%;
  background: var(--cyan);
}

.bond-figure .bond-hotspot:hover,
.bond-figure .bond-hotspot:focus-visible {
  border-color: #6bd5eb;
  box-shadow: 0 0 0 3px rgb(88 221 240 / 18%), 0 8px 22px rgb(13 29 40 / 28%);
}

.bond-figure .bond-hotspot:hover span,
.bond-figure .bond-hotspot:focus-visible span {
  box-shadow: inset 0 0 0 1px rgb(101 26 14 / 28%), 0 0 13px rgb(215 65 41 / 62%);
}

.bond-figure .bond-hotspot:hover::after,
.bond-figure .bond-hotspot:hover::before,
.bond-figure .bond-hotspot:focus-visible::after,
.bond-figure .bond-hotspot:focus-visible::before {
  filter: drop-shadow(0 0 4px rgb(73 213 238 / 78%));
}

.moth-hotspot { top: auto; }
.moth-context {
  top: 8.5%;
  right: auto;
  bottom: auto;
  left: 43.5%;
}
.moth-redundancy {
  top: 36.5%;
  right: auto;
  bottom: auto;
  left: 28.5%;
  border-color: rgb(225 169 88 / 88%);
  box-shadow: 0 0 18px rgb(213 164 95 / 24%);
}
.moth-redundancy span {
  background: #49361d;
  color: #ffe0a8;
}
.moth-restraint {
  top: 73%;
  right: 4.5%;
  bottom: auto;
  left: auto;
}

/* Case 03 hotspots use moth-wing green and delicate botanical leaders. */
.moth-figure .moth-hotspot {
  --moth-leader-length: 82px;
  --moth-leader-angle: 24deg;
  isolation: isolate;
  min-height: 38px;
  padding: 6px 14px 6px 6px;
  border: 1px solid rgb(166 137 76 / 70%);
  border-radius: 5px 2px 5px 2px;
  background: rgb(218 229 194 / 96%);
  color: #1a303b;
  box-shadow: 0 7px 18px rgb(32 39 29 / 22%), inset 0 0 0 1px rgb(255 255 255 / 52%);
}

.moth-figure .moth-hotspot span {
  width: 25px;
  height: 25px;
  border: 1px solid rgb(103 73 31 / 30%);
  background: #c79b54;
  color: #172b36;
  box-shadow: inset 0 0 0 1px rgb(255 239 191 / 45%), 0 2px 5px rgb(75 54 24 / 18%);
}

.moth-figure .moth-hotspot::after {
  position: absolute;
  z-index: -1;
  top: calc(50% - 4px);
  left: calc(100% - 2px);
  width: var(--moth-leader-length);
  height: 9px;
  background:
    radial-gradient(circle at calc(100% - 4px) 50%, #f7e5b6 0 2px, #b68a47 2.5px 4px, transparent 4.5px),
    linear-gradient(#b68a47, #b68a47) left center / calc(100% - 7px) 1px no-repeat;
  content: "";
  opacity: 0.78;
  transform: rotate(var(--moth-leader-angle));
  transform-origin: left center;
  transition: opacity 160ms ease, filter 160ms ease;
  pointer-events: none;
}

.moth-figure .moth-context {
  --moth-leader-length: 76px;
  --moth-leader-angle: 28deg;
}

.moth-figure .moth-redundancy {
  --moth-leader-length: 92px;
  --moth-leader-angle: 17deg;
}

.moth-figure .moth-restraint {
  --moth-leader-length: 84px;
  --moth-leader-angle: -25deg;
}

.moth-figure .moth-restraint::after {
  right: calc(100% - 2px);
  left: auto;
  background:
    radial-gradient(circle at 4px 50%, #f7e5b6 0 2px, #b68a47 2.5px 4px, transparent 4.5px),
    linear-gradient(#b68a47, #b68a47) right center / calc(100% - 7px) 1px no-repeat;
  transform-origin: right center;
}

.moth-figure .moth-hotspot:hover,
.moth-figure .moth-hotspot:focus-visible {
  border-color: #b68a47;
  background: #e5edcf;
  box-shadow: 0 0 0 3px rgb(199 155 84 / 16%), 0 8px 22px rgb(32 39 29 / 26%);
}

.moth-figure .moth-hotspot:hover span,
.moth-figure .moth-hotspot:focus-visible span {
  box-shadow: inset 0 0 0 1px rgb(255 239 191 / 45%), 0 0 13px rgb(199 155 84 / 62%);
}

.moth-figure .moth-hotspot:hover::after,
.moth-figure .moth-hotspot:focus-visible::after {
  opacity: 1;
  filter: drop-shadow(0 0 4px rgb(199 155 84 / 68%));
}

.braille-transition {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(32px, 1fr) auto minmax(32px, 1fr);
  gap: clamp(18px, 3vw, 44px);
  align-items: center;
  padding: 20px clamp(24px, 6vw, 96px);
  color: rgb(213 164 95 / 33%);
  background: rgb(3 14 23 / 28%);
}

.braille-transition p {
  margin: 0;
  color: #e7b45f;
  font-family: "Apple Braille", "Noto Sans Symbols 2", sans-serif;
  font-size: clamp(38px, 4vw, 64px);
  line-height: 1.15;
  letter-spacing: 0.14em;
  text-align: center;
  text-shadow: 0 0 16px rgb(231 180 95 / 34%);
}

.braille-rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgb(112 215 236 / 62%));
}

.braille-rule:last-child {
  background: linear-gradient(90deg, rgb(112 215 236 / 62%), transparent);
}

.braille-transition-conclusion {
  background: linear-gradient(180deg, rgb(2 12 22 / 48%), rgb(2 12 22 / 72%));
}

.closing-principles-section {
  position: relative;
  z-index: 1;
  padding: clamp(54px, 6vw, 88px) clamp(26px, 6vw, 96px) clamp(72px, 9vw, 130px);
  background: linear-gradient(180deg, rgb(2 12 22 / 48%), rgb(2 12 22 / 82%) 24%, rgb(2 12 22 / 94%));
}

.closing-principles-shell {
  max-width: 1440px;
  margin: 0 auto;
}

.closing-principles-header {
  display: grid;
  grid-template-columns: minmax(360px, 0.95fr) minmax(420px, 1.05fr);
  gap: 18px clamp(48px, 8vw, 126px);
  align-items: end;
}

.closing-eyebrow {
  grid-column: 1 / -1;
  margin: 0 0 4px;
  color: var(--amber);
  font: 700 10px/1.4 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.closing-principles-header h2 {
  margin: 0;
  color: #fff9ec;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(58px, 7vw, 106px);
  font-weight: 400;
  line-height: 0.88;
  letter-spacing: -0.055em;
}

.closing-principles-header > p:last-child {
  max-width: 700px;
  margin: 0 0 4px;
  color: rgb(242 240 230 / 74%);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(18px, 1.55vw, 24px);
  line-height: 1.6;
}

.closing-principles-header strong { color: #fff9ec; font-weight: 400; }

.principle-lenses {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(34px, 5vw, 84px);
  margin-top: clamp(78px, 9vw, 126px);
}

.principle-lens-card {
  display: grid;
  grid-template-rows: auto auto 1fr;
  justify-items: center;
  min-width: 0;
  text-align: center;
}

.principle-lens-card header { margin-bottom: 18px; }

.principle-lens-card header span {
  display: block;
  margin-bottom: 8px;
  color: var(--amber);
  font: 700 15px/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.12em;
}

.principle-lens-card h3 {
  margin: 0;
  color: #fff9ec;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(25px, 2.1vw, 35px);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.inspection-lens {
  position: relative;
  width: clamp(270px, 22vw, 354px);
  aspect-ratio: 1;
  padding: 16px;
  border: 2px solid #e0b86f;
  border-radius: 50%;
  background: conic-gradient(from 22deg, #5b3719, #d7ae65 11%, #6f461f 24%, #e5c17b 42%, #4c2e17 56%, #bd8a45 72%, #f0d28f 88%, #5b3719);
  box-shadow:
    inset 0 0 0 3px rgb(45 24 10 / 72%),
    inset 0 0 0 6px rgb(255 222 155 / 28%),
    0 0 0 2px #1f91aa,
    0 0 0 8px rgb(4 15 24 / 92%),
    0 0 0 9px rgb(112 215 236 / 48%),
    0 22px 50px rgb(0 0 0 / 48%);
}

.inspection-lens::before,
.inspection-lens::after {
  content: "";
  position: absolute;
  z-index: 2;
  pointer-events: none;
  background: rgb(112 215 236 / 64%);
}

.inspection-lens::before { top: 50%; right: -20px; left: -20px; height: 1px; }
.inspection-lens::after { top: -20px; bottom: -20px; left: 50%; width: 1px; }

.inspection-lens-glass {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border: 2px solid rgb(255 244 213 / 56%);
  border-radius: 50%;
  background: #071522;
  box-shadow: inset 0 0 34px rgb(0 0 0 / 48%);
}

.inspection-lens-glass::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(138deg, rgb(255 255 255 / 18%), transparent 28%, transparent 66%, rgb(112 215 236 / 8%));
  pointer-events: none;
}

.inspection-lens img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.05);
}

.inspection-lens-ladybug img { object-position: 50% 50%; }
.inspection-lens-molecule img { object-position: 50% 50%; }
.inspection-lens-moth img { object-position: 48% 50%; }

.principle-lens-card > p {
  max-width: 360px;
  margin: 30px 0 0;
  color: rgb(242 240 230 / 76%);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.5;
}

.closing-rule {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: clamp(78px, 9vw, 126px) auto clamp(48px, 6vw, 80px);
  color: var(--cyan);
}

.closing-rule::before,
.closing-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: currentColor;
  opacity: 0.54;
}

.closing-rule span { position: relative; width: 22px; height: 22px; border: 1px solid currentColor; border-radius: 50%; }
.closing-rule span::before,
.closing-rule span::after { content: ""; position: absolute; background: currentColor; }
.closing-rule span::before { top: 10px; right: -8px; left: -8px; height: 1px; }
.closing-rule span::after { top: -8px; bottom: -8px; left: 10px; width: 1px; }

.closing-declaration {
  max-width: 1150px;
  margin: 0 auto;
  color: #fff9ec;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(34px, 4.5vw, 70px);
  line-height: 1.07;
  letter-spacing: -0.035em;
  text-align: center;
  text-transform: uppercase;
}

.closing-declaration strong { display: block; margin-top: 9px; color: #e8af62; font-weight: 400; }

.closing-signoff {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin: clamp(46px, 6vw, 80px) 0 0;
  color: #fff;
  font: 700 9px/1.5 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  letter-spacing: 0.22em;
  text-align: center;
  text-transform: uppercase;
}

.closing-signoff span { width: 54px; height: 1px; background: var(--cyan); opacity: 0.58; }


.ladybug-figure figcaption {
  margin: 18px 0 0;
  color: #fff;
  font-size: 9px;
  text-align: center;
}

.hotspot-purpose { top: 62%; left: 18%; }

.hotspot-translation {
  top: 61%;
  left: 46%;
}

.hotspot-access {
  top: 43%;
  right: 10%;
}

@media (max-width: 900px) {
  :root { --nav-height: 104px; }

  .site-nav {
    align-items: flex-start;
    padding-top: 18px;
  }

  .site-nav nav {
    max-width: 68vw;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px 16px;
  }

  .site-nav nav a {
    padding: 5px 0;
    font-size: 8px;
  }

  .site-nav nav .active::after { bottom: -5px; }

  .intro {
    grid-template-columns: 1fr;
    gap: 46px;
    padding-top: 72px;
  }

  .intro-copy { max-width: 700px; }
  h1 { font-size: clamp(66px, 14vw, 112px); }

  .definition {
    max-width: 680px;
    margin-left: 0;
  }

  .method {
    padding-top: 0;
    transform: none;
  }

  .method ol {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .method ol::before { display: none; }

  .method li { grid-template-columns: var(--method-step-size) 1fr; }

  .intro-bridge {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 620px) {
  body::before { background-position: 62% center; }
  .brand small { display: none; }

  .site-nav { padding-inline: 17px; }

  .site-nav nav {
    max-width: 72vw;
    gap: 7px 11px;
  }

  .site-nav nav a:nth-child(2),
  .site-nav nav a:nth-child(3) { display: none; }

  .intro {
    min-height: calc(100svh - var(--nav-height));
    gap: 34px;
    padding: 52px 20px 28px;
  }

  .eyebrow {
    margin-bottom: 18px;
    font-size: 10px;
  }

  h1 { font-size: clamp(58px, 19vw, 84px); }

  .definition {
    margin-top: 30px;
    font-size: 17px;
    line-height: 1.55;
  }

  .method ol {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .method li { padding-block: 14px 18px; }
  .method strong { font-size: calc(21px + 4pt); }
  .case-threshold { padding: 64px 12px; }

  .case-meta {
    flex-direction: column;
    gap: 9px;
    line-height: 1.45;
  }

  .case-heading {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 30px;
  }

  .case-heading .case-intro {
    max-width: 100%;
    margin: 0;
  }

  .hotspot {
    position: static;
    display: inline-flex;
    margin: 12px 7px 0 0;
  }

  .ladybug-figure .hotspot::after { display: none; }
  .bond-figure .bond-hotspot::after,
  .bond-figure .bond-hotspot::before { display: none; }
  .moth-figure .moth-hotspot::after { display: none; }

  .bond-figure .hotspot { position: static; }
  .moth-figure .hotspot { position: static; }

  .closing-principles-section { padding-inline: 20px; }
  .closing-principles-header { grid-template-columns: 1fr; gap: 28px; }
  .principle-lenses { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principle-lenses::before { display: none; }
  .principle-lens-card:last-child {
    grid-column: 1 / -1;
    width: calc(50% - 17px);
    justify-self: center;
  }

}

@media (max-width: 620px) {
  .braille-transition {
    grid-template-columns: 20px 1fr 20px;
    gap: 12px;
    padding-inline: 12px;
  }
  .braille-transition p { font-size: clamp(28px, 9vw, 42px); letter-spacing: 0.08em; }
  .principle-lenses { grid-template-columns: 1fr; gap: 68px; }
  .principle-lens-card:last-child { grid-column: auto; width: 100%; }
  .inspection-lens { width: min(82vw, 330px); }
  .closing-signoff span { width: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .intro-bridge a span { transition: none; }
}