@import url("https://fonts.googleapis.com/css2?family=Martian+Mono:wght@400;600;700&family=Newsreader:opsz,wdth,wght@6..72,75,400;6..72,75,600;6..72,75,700&family=Source+Sans+3:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap");

:root {
  --lock-stone: #6f726c;
  --canal-green: #0c1612;
  --sluice-blue: #3e7488;
  --beam-red: #8c3b32;
  --towpath-cream: #d5d0bf;
  --moss-black: #10140f;
  --iron-rust: #8a4c34;
  --level-white: #eceee8;
  --wet-timber: #261910;
  --ink: #161812;
  --muted: #5a5e56;
  --font-display: "Newsreader", Georgia, serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --font-code: "Martian Mono", ui-monospace, monospace;
  --wl-y: 58%;
  --wl-shift: 0px;
  --ease: cubic-bezier(0.22, 0.82, 0.2, 1);
}

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

html,
body {
  overflow-x: hidden !important;
  max-width: 100vw;
  position: relative;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--moss-black);
  color: var(--level-white);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background-image:
    radial-gradient(1200px 700px at 12% -10%, rgba(62, 116, 136, 0.12), transparent 55%),
    linear-gradient(180deg, rgba(38, 25, 16, 0.55), transparent 28%),
    url("../images/stone-texture.jpg");
  background-attachment: fixed, scroll, scroll;
  background-size: auto, auto, 1400px auto;
}

body.nav-open,
html.nav-open {
  overflow: hidden !important;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-stretch: 75%;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}

.mono {
  font-family: var(--font-code);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wrap {
  width: min(1180px, calc(100% - 2.2rem));
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: -999px;
}

section,
footer,
header,
main {
  overflow-x: clip;
  max-width: 100%;
}

.lock-header {
  position: sticky;
  top: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.2rem;
  background: color-mix(in srgb, var(--canal-green) 88%, black);
  border-bottom: 1px solid color-mix(in srgb, var(--sluice-blue) 35%, transparent);
  box-shadow: inset 0 -2px 0 var(--beam-red);
}

.lock-header.is-stuck {
  background: var(--canal-green);
}

.lock-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.lock-brand img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  border: 1px solid color-mix(in srgb, var(--iron-rust) 70%, black);
}

.brand-name {
  font-family: var(--font-display);
  font-stretch: 75%;
  font-size: 1.2rem;
  letter-spacing: 0.12em;
}

.brand-sub {
  display: block;
  font-family: var(--font-code);
  font-size: 0.58rem;
  color: var(--sluice-blue);
}

.lock-nav {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.lock-nav a {
  font-family: var(--font-code);
  font-size: 0.62rem;
  padding: 0.45rem 0.55rem;
  border: 1px solid color-mix(in srgb, var(--level-white) 16%, transparent);
  color: var(--towpath-cream);
}

.lock-nav a:hover,
.lock-nav a[aria-current="page"] {
  color: var(--level-white);
  border-color: var(--sluice-blue);
  box-shadow: inset 0 -2px 0 var(--sluice-blue);
}

.level-readout {
  font-family: var(--font-code);
  font-size: 0.58rem;
  color: var(--towpath-cream);
  border-left: 2px solid var(--iron-rust);
  padding-left: 0.7rem;
}

.lock-burger {
  display: none;
  width: 44px;
  height: 44px;
  background: var(--wet-timber);
  border: 1px solid var(--beam-red);
  position: relative;
}

.lock-burger span,
.lock-burger span::before,
.lock-burger span::after {
  position: absolute;
  left: 10px;
  width: 22px;
  height: 2px;
  background: var(--level-white);
  content: "";
}

.lock-burger span {
  top: 21px;
}

.lock-burger span::before {
  top: -7px;
}

.lock-burger span::after {
  top: 7px;
}

.lock-drawer {
  display: none;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.7rem 1.2rem;
  border: 0;
  cursor: pointer;
  font-family: var(--font-code);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--canal-green);
  color: var(--towpath-cream);
  box-shadow:
    inset 4px 0 0 var(--beam-red),
    0 0 0 1px color-mix(in srgb, var(--wet-timber) 80%, black);
}

.btn::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--iron-rust);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--wet-timber) 70%, black);
  transition: transform 0.4s var(--ease);
}

.btn::after {
  content: "";
  position: absolute;
  left: 1.6rem;
  right: 0.8rem;
  bottom: 8px;
  height: 1px;
  background: var(--sluice-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}

.btn:hover::before {
  transform: rotate(28deg);
}

.btn:hover::after {
  transform: scaleX(1);
}

.btn-fill {
  background: var(--beam-red);
  color: var(--level-white);
}

.btn-wide {
  width: 100%;
}

.link-water {
  font-family: var(--font-code);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sluice-blue);
  border-bottom: 1px solid var(--sluice-blue);
  padding-bottom: 0.15rem;
}

.link-water:hover {
  background-image: radial-gradient(circle at 20% 70%, var(--sluice-blue) 1px, transparent 2px),
    radial-gradient(circle at 80% 70%, var(--sluice-blue) 1px, transparent 2px);
  background-repeat: no-repeat;
  background-position: left bottom, right bottom;
}

.level-chamber {
  position: relative;
  min-height: min(92vh, 980px);
  background: var(--canal-green);
  overflow: hidden;
}

.chamber-visual {
  position: absolute;
  inset: 0;
}

.chamber-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.08);
}

.chamber-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 22, 18, 0.82) 0%, rgba(12, 22, 18, 0.28) 48%, rgba(16, 20, 15, 0.7) 100%),
    linear-gradient(180deg, transparent 0%, rgba(16, 20, 15, 0.55) 100%);
}

.wall-levels {
  position: absolute;
  left: 4%;
  top: 8%;
  bottom: 12%;
  width: min(38vw, 420px);
  display: grid;
  grid-template-rows: 1fr 1fr 1fr;
  pointer-events: none;
}

.level-band {
  border-top: 1px dashed color-mix(in srgb, var(--level-white) 35%, transparent);
  display: flex;
  align-items: flex-start;
  padding-top: 0.4rem;
}

.level-band span {
  font-family: var(--font-code);
  font-size: 0.62rem;
  color: var(--towpath-cream);
}

.hero-title {
  position: relative;
  z-index: 2;
  width: min(920px, calc(100% - 2rem));
  margin: 0;
  padding: 7.5rem 0 0 7%;
  font-size: clamp(2.4rem, 7vw, 6.4rem);
  color: var(--level-white);
  max-width: 16ch;
}

.hero-title .cut {
  display: block;
  transform: translateX(8%);
}

.hero-title .beam {
  display: inline-block;
  transform: rotate(-8deg);
  transform-origin: left;
  background: color-mix(in srgb, var(--wet-timber) 70%, transparent);
  padding: 0 0.2em;
  box-shadow: 8px 0 0 var(--beam-red);
}

.lock-anchor {
  position: absolute;
  right: 5%;
  top: 18%;
  z-index: 3;
  font-family: var(--font-code);
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  color: var(--level-white);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  letter-spacing: 0.22em;
  border-right: 3px solid var(--beam-red);
  padding-right: 0.6rem;
}

.keeper-note {
  position: relative;
  z-index: 3;
  width: min(420px, calc(100% - 2rem));
  margin: 1.6rem 0 0 18%;
  background: var(--towpath-cream);
  color: var(--ink);
  padding: 1.1rem 1.2rem 1.3rem;
  box-shadow: 10px 0 0 var(--iron-rust);
  animation: sign-in 1.1s var(--ease) both;
}

.keeper-note p {
  margin: 0.4rem 0 0;
  font-size: 0.98rem;
}

.hero-actions {
  position: relative;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin: 1.6rem 0 0 18%;
}

.level-chips {
  position: relative;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.8rem 0 3rem 7%;
}

.chip {
  font-family: var(--font-code);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--wet-timber) 78%, black);
  color: var(--towpath-cream);
  padding: 0.45rem 0.7rem;
  border-left: 3px solid var(--beam-red);
  animation: sign-in 0.9s var(--ease) both;
}

.chip:nth-child(2) {
  animation-delay: 0.12s;
}

.chip:nth-child(3) {
  animation-delay: 0.24s;
}

.waterline {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--sluice-blue);
  z-index: 2;
  box-shadow: 0 0 18px color-mix(in srgb, var(--sluice-blue) 55%, transparent);
}

.wl-a {
  top: 34%;
  animation: equalise-a 3.4s var(--ease) both;
}

.wl-b {
  top: 62%;
  animation: equalise-b 3.4s var(--ease) both;
}

.cursor-waterline {
  top: var(--wl-y);
  transform: translateY(var(--wl-shift));
  opacity: 0.55;
  pointer-events: none;
}

.gate-beam {
  position: absolute;
  z-index: 2;
  left: 42%;
  top: 22%;
  width: 46%;
  height: 14px;
  background: linear-gradient(90deg, var(--beam-red), color-mix(in srgb, var(--wet-timber) 70%, var(--beam-red)));
  transform-origin: left center;
  animation: gate-open 3.8s var(--ease) both;
  box-shadow: 0 18px 0 color-mix(in srgb, var(--moss-black) 45%, transparent);
}

.sluice-arc {
  position: absolute;
  right: 9%;
  bottom: 14%;
  width: 120px;
  height: 120px;
  border: 2px solid transparent;
  border-top-color: var(--sluice-blue);
  border-right-color: var(--sluice-blue);
  border-radius: 50%;
  animation: arc-draw 2.8s var(--ease) both;
}

@keyframes equalise-a {
  from {
    top: 28%;
  }
  to {
    top: 48%;
  }
}

@keyframes equalise-b {
  from {
    top: 70%;
  }
  to {
    top: 48%;
  }
}

@keyframes gate-open {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(7deg);
  }
}

@keyframes arc-draw {
  from {
    transform: rotate(-80deg);
    opacity: 0;
  }
  to {
    transform: rotate(18deg);
    opacity: 1;
  }
}

@keyframes sign-in {
  from {
    transform: translateX(-18px);
    opacity: 0;
  }
  to {
    transform: none;
    opacity: 1;
  }
}

.marker-strip {
  background: var(--lock-stone);
  color: var(--level-white);
  padding: 1.2rem 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.marker {
  padding: 0.8rem 1rem;
  border-left: 1px solid color-mix(in srgb, var(--level-white) 28%, transparent);
  min-height: 92px;
}

.marker b {
  display: block;
  font-family: var(--font-code);
  font-size: 0.62rem;
  margin-bottom: 0.35rem;
  color: var(--towpath-cream);
}

.marker span {
  font-family: var(--font-display);
  font-stretch: 75%;
  font-size: 1.05rem;
}

.pressure {
  padding: 4.5rem 0 5rem;
  background: color-mix(in srgb, var(--wet-timber) 88%, black);
}

.pressure-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 1.2rem;
  align-items: stretch;
}

.chamber-panel {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

.chamber-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 420px;
}

.chamber-panel figcaption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  background: var(--canal-green);
  color: var(--towpath-cream);
  font-family: var(--font-code);
  font-size: 0.62rem;
  padding: 0.45rem 0.6rem;
}

.note-stack {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.note-card {
  background: var(--towpath-cream);
  color: var(--ink);
  padding: 1.1rem 1.15rem;
  box-shadow: inset 0 3px 0 var(--sluice-blue);
  position: relative;
}

.note-card:nth-child(2) {
  margin-left: 8%;
  box-shadow: inset 0 3px 0 var(--beam-red);
}

.note-card:nth-child(3) {
  margin-left: 16%;
}

.note-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.wl-connect {
  height: 8px;
  background: linear-gradient(90deg, transparent, var(--sluice-blue), var(--beam-red), transparent);
  margin: 1.4rem 0 0;
}

.outputs {
  padding: 4.2rem 0 5rem;
  background: var(--moss-black);
}

.passage-wall {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.9fr;
  grid-template-rows: auto auto;
  gap: 0.8rem;
}

.case {
  position: relative;
  overflow: hidden;
  background: var(--canal-green);
  min-height: 190px;
}

.case img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 190px;
  opacity: 0.72;
}

.case-body {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.9rem;
  background: linear-gradient(transparent, rgba(12, 22, 18, 0.94));
}

.case-body h3 {
  font-size: 1.25rem;
}

.case-body p {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
}

.case-featured {
  grid-row: 1 / span 2;
  min-height: 520px;
}

.case-featured img {
  min-height: 520px;
}

.case-featured .case-body h3 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.meta {
  font-family: var(--font-code);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: var(--sluice-blue);
}

.thesis {
  padding: 5rem 0;
  background:
    linear-gradient(90deg, rgba(12, 22, 18, 0.7), rgba(38, 25, 16, 0.55)),
    url("../images/wet-timber.jpg") center/cover;
}

.thesis h2 {
  font-size: clamp(2rem, 5.5vw, 4.6rem);
  max-width: 14ch;
  margin-left: 6%;
  color: var(--level-white);
}

.thesis-card {
  width: min(520px, calc(100% - 2rem));
  margin: -1.5rem 8% 0 auto;
  background: var(--towpath-cream);
  color: var(--ink);
  padding: 1.4rem 1.5rem;
  position: relative;
}

.water-anno {
  position: absolute;
  left: -18%;
  top: 42%;
  font-family: var(--font-code);
  font-size: 0.62rem;
  color: var(--sluice-blue);
  writing-mode: vertical-rl;
}

.chambers {
  padding: 4.4rem 0 5rem;
  background: var(--canal-green);
}

.lock-composition {
  position: relative;
  min-height: 640px;
}

.svc {
  position: absolute;
  background: color-mix(in srgb, var(--lock-stone) 55%, var(--canal-green));
  color: var(--level-white);
  padding: 1rem 1.05rem;
  width: min(280px, 42vw);
  border-top: 3px solid var(--sluice-blue);
}

.svc h3 {
  font-size: 1.35rem;
}

.svc p {
  margin: 0.4rem 0 0;
  font-size: 0.92rem;
}

.svc .sluice-note {
  font-family: var(--font-code);
  font-size: 0.58rem;
  color: var(--towpath-cream);
}

.svc-a {
  left: 2%;
  top: 8%;
  height: 220px;
  width: min(340px, 46vw);
  border-top-color: var(--beam-red);
}

.svc-b {
  left: 38%;
  top: 2%;
  height: 160px;
}

.svc-c {
  right: 3%;
  top: 18%;
  height: 210px;
}

.svc-d {
  left: 18%;
  top: 46%;
  height: 200px;
}

.svc-e {
  left: 52%;
  top: 42%;
  height: 180px;
}

.svc-f {
  right: 8%;
  bottom: 4%;
  height: 170px;
}

.path-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.proof {
  padding: 4.2rem 0;
  background: var(--towpath-cream);
  color: var(--ink);
}

.proof-split {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 0;
}

.unequal {
  background: var(--wet-timber);
  color: var(--towpath-cream);
  padding: 2rem 1.4rem;
  min-height: 360px;
}

.clear-pass {
  background: var(--level-white);
  padding: 2.2rem 1.6rem 2.4rem 8%;
}

.clear-pass h2 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  max-width: 12ch;
}

.proof-marks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.proof-marks span {
  font-family: var(--font-code);
  font-size: 0.62rem;
  border: 1px solid var(--lock-stone);
  padding: 0.35rem 0.5rem;
}

.about-lock {
  padding: 4.5rem 0;
  background: var(--moss-black);
}

.about-lock-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.4rem;
  align-items: center;
}

.about-lock img {
  width: 100%;
  min-height: 380px;
  object-fit: cover;
}

.about-copy {
  background: var(--level-white);
  color: var(--ink);
  padding: 1.6rem 1.5rem;
}

.about-copy h2 {
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  margin-bottom: 0.7rem;
}

.sequence {
  padding: 4.2rem 0 4.8rem;
  background: var(--lock-stone);
}

.seq-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.4rem;
}

.seq-step {
  background: var(--canal-green);
  min-height: 210px;
  padding: 1rem 0.8rem;
  position: relative;
}

.seq-step:nth-child(even) {
  margin-top: 2.2rem;
  background: var(--wet-timber);
}

.seq-step b {
  font-family: var(--font-code);
  font-size: 0.62rem;
  color: var(--sluice-blue);
}

.seq-step h3 {
  font-size: 1.5rem;
  margin: 0.4rem 0;
}

.marquee-wrap {
  overflow: hidden;
  max-width: 100vw;
  background: var(--beam-red);
  padding: 0.55rem 0;
}

.marquee-row {
  display: flex;
  gap: 2.2rem;
  white-space: nowrap;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.marquee-row.reverse {
  animation-direction: reverse;
  animation-duration: 34s;
  opacity: 0.86;
}

.marquee-row span {
  font-family: var(--font-code);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--level-white);
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.final-cta {
  position: relative;
  padding: 5.5rem 1rem;
  background:
    linear-gradient(180deg, rgba(16, 20, 15, 0.55), rgba(12, 22, 18, 0.78)),
    url("../images/hero-chamber.jpg") center/cover;
  text-align: left;
}

.sign-frame {
  width: min(680px, 92%);
  margin-left: 8%;
  background: var(--towpath-cream);
  color: var(--ink);
  padding: 1.8rem 1.6rem;
  box-shadow: 16px 0 0 var(--beam-red);
}

.sign-frame h2 {
  font-size: clamp(2rem, 4.5vw, 3.6rem);
}

.contact-preview {
  padding: 3.2rem 0 4rem;
  background: var(--level-white);
  color: var(--ink);
}

.contact-preview address {
  font-style: normal;
  margin: 0.6rem 0 1rem;
}

.lock-footer {
  background: var(--canal-green);
  color: var(--towpath-cream);
  padding: 2.4rem 1.2rem 2.8rem;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1.4rem;
}

.lock-footer a {
  color: var(--sluice-blue);
}

.lock-footer a:hover {
  color: var(--level-white);
  border-bottom: 1px solid var(--sluice-blue);
}

.foot-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-code);
  font-size: 0.68rem;
}

.page-hero {
  padding: 4.5rem 0 2.4rem;
  background:
    linear-gradient(90deg, rgba(12, 22, 18, 0.88), rgba(12, 22, 18, 0.4)),
    url("../images/waterline-stain.jpg") center/cover;
}

.page-hero h1 {
  font-size: clamp(2.2rem, 6vw, 5rem);
  max-width: 14ch;
  margin-left: 6%;
}

.legal-hero h1,
.legal main h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.prose {
  background: var(--level-white);
  color: var(--ink);
  padding: 2.4rem 0 4rem;
}

.prose .wrap {
  width: min(820px, calc(100% - 2rem));
}

.prose h2 {
  font-size: 1.7rem;
  margin: 1.8rem 0 0.6rem;
}

.prose h3 {
  font-size: 1.2rem;
  margin: 1.2rem 0 0.4rem;
}

.prose p {
  margin: 0.7rem 0;
}

.map-frame {
  width: 100%;
  min-height: 320px;
  border: 0;
  filter: grayscale(0.35) contrast(1.05);
}

.passage-form {
  background: var(--towpath-cream);
  color: var(--ink);
  padding: 1.4rem;
  box-shadow: inset 0 4px 0 var(--beam-red);
  display: grid;
  gap: 0.8rem;
}

.passage-form label {
  font-family: var(--font-code);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.passage-form input,
.passage-form textarea {
  width: 100%;
  border: 0;
  border-bottom: 2px solid var(--lock-stone);
  background: transparent;
  padding: 0.55rem 0;
  color: var(--ink);
}

.passage-form input.is-invalid,
.passage-form textarea.is-invalid {
  border-bottom-color: var(--beam-red);
}

.form-status {
  font-family: var(--font-code);
  font-size: 0.68rem;
  min-height: 1.2em;
}

.lock-faq-item,
.service-acc {
  border-top: 1px solid color-mix(in srgb, var(--lock-stone) 55%, white);
  background: var(--level-white);
  color: var(--ink);
}

.lock-faq-q,
.service-acc-head {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 1rem;
  cursor: pointer;
  font-family: var(--font-display);
  font-stretch: 75%;
  font-size: 1.2rem;
}

.lock-faq-a,
.service-acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}

.lock-faq-a p,
.service-acc-body p {
  margin: 0;
  padding: 0 1rem 1rem;
}

.lock-faq-item.is-open,
.service-acc.is-open {
  box-shadow: inset 8px 0 0 var(--beam-red);
}

.thanks-shell {
  min-height: 70vh;
  display: grid;
  place-items: center;
  padding: 3rem 1rem;
  background:
    linear-gradient(rgba(12, 22, 18, 0.72), rgba(16, 20, 15, 0.82)),
    url("../images/chamber-ripple.jpg") center/cover;
}

.thanks-sign {
  background: var(--towpath-cream);
  color: var(--ink);
  padding: 2rem 1.6rem;
  width: min(560px, 100%);
  box-shadow: 14px 0 0 var(--beam-red);
}

.wall-b {
  grid-template-columns: 0.8fr 1.3fr 0.9fr;
}

.wall-b .case-featured {
  grid-column: 2;
}

.wall-c {
  grid-template-columns: 1fr 1fr 1.3fr;
}

.wall-c .case-featured {
  grid-column: 3;
  grid-row: 1 / span 2;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

.icon-line {
  width: 42px;
  height: 42px;
  stroke: var(--sluice-blue);
  fill: none;
  stroke-width: 1.4;
  stroke-dasharray: 80;
  stroke-dashoffset: 80;
}

.reveal.is-in .icon-line {
  animation: draw 1.1s var(--ease) forwards;
}

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

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.4rem;
}

.legal-nav a {
  font-family: var(--font-code);
  font-size: 0.62rem;
  color: var(--sluice-blue);
  border-bottom: 1px solid var(--sluice-blue);
}

@media (hover: hover) and (min-width: 1025px) {
  .case:hover {
    transform: translateY(-4px);
    transition: transform 0.4s var(--ease);
  }
}

@media (max-width: 1024px) {
  .lock-nav,
  .level-readout {
    display: none;
  }

  .lock-burger {
    display: block;
  }

  .lock-drawer {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    position: fixed;
    inset: 58px 0 0 0;
    background: var(--canal-green);
    padding: 1.2rem;
    transform: translateX(110%);
    transition: transform 0.35s var(--ease);
    z-index: 90;
  }

  .lock-drawer.is-open {
    transform: none;
  }

  .lock-drawer a {
    font-family: var(--font-code);
    padding: 0.85rem 0.4rem;
    border-bottom: 1px solid color-mix(in srgb, var(--sluice-blue) 40%, transparent);
  }

  .marker-strip,
  .pressure-grid,
  .passage-wall,
  .about-lock-grid,
  .seq-track,
  .proof-split,
  .foot-grid {
    grid-template-columns: 1fr;
  }

  .case-featured,
  .wall-b .case-featured,
  .wall-c .case-featured {
    grid-column: auto;
    grid-row: auto;
    min-height: 280px;
  }

  .lock-composition {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    min-height: 0;
  }

  .svc {
    position: static;
    width: 100%;
    height: auto;
  }

  .path-svg,
  .water-anno,
  .cursor-waterline,
  .wall-levels,
  .gate-beam,
  .sluice-arc {
    display: none;
  }

  .hero-title,
  .keeper-note,
  .hero-actions,
  .level-chips,
  .thesis h2,
  .sign-frame {
    margin-left: 1rem;
    transform: none;
  }

  .thesis-card,
  .note-card:nth-child(2),
  .note-card:nth-child(3) {
    margin-left: 0;
    width: auto;
  }

  .lock-anchor {
    writing-mode: horizontal-tb;
    transform: none;
    top: auto;
    bottom: 1rem;
    right: 1rem;
    border-right: 0;
    border-bottom: 3px solid var(--beam-red);
    padding: 0 0 0.3rem;
  }

  .seq-step:nth-child(even) {
    margin-top: 0;
  }

  [data-parallax] {
    transform: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}