/* Tunnel-X product page. The shared site header, footer, and theme switch stay intact. */
body.tunnel-x-page {
  --tx-bg: #06101a;
  --tx-surface: #0b1b2a;
  --tx-surface-soft: #0d2333;
  --tx-ink: #f2fbff;
  --tx-muted: #b4cbd6;
  --tx-accent: #59f7ff;
  --tx-accent-ink: #062a32;
  --tx-rule: rgba(140, 213, 229, 0.18);
  background: var(--tx-bg);
  color: var(--tx-ink);
}

.tunnel-x-page::before,
.tunnel-x-page::after,
.tunnel-x-page main::before,
.tunnel-x-page main::after {
  display: none;
}

.tunnel-x-page main {
  overflow: clip;
  background: var(--tx-bg);
}

.tx-shell {
  width: min(1200px, calc(100% - 3rem));
  margin-inline: auto;
}

.tx-hero {
  position: relative;
  display: grid;
  align-items: center;
  isolation: isolate;
  overflow: hidden;
  min-height: min(900px, 100dvh);
  padding-block: 7.2rem 3.5rem;
  background: #06101a;
  transition: background-color 260ms ease;
}

.tx-hero::before,
.tx-hero::after {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: "";
}

.tx-hero::before {
  background: url("assets/tunnel-x/tunnel-x-hero.png") center 54% / cover no-repeat;
  opacity: 0.88;
  transition: filter 260ms ease, opacity 260ms ease;
}

.tx-hero::after {
  background:
    linear-gradient(90deg, #06101a 0%, rgba(6, 16, 26, 0.95) 24%, rgba(6, 16, 26, 0.73) 46%, rgba(6, 16, 26, 0.14) 76%),
    linear-gradient(0deg, #06101a 0%, transparent 27%, transparent 76%, rgba(6, 16, 26, 0.28) 100%);
  transition: background 260ms ease;
}

.tx-hero-layout {
  position: relative;
  z-index: 1;
}

.tx-hero-copy {
  position: relative;
  max-width: 43rem;
}

.tx-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: clamp(1.65rem, 4vw, 3.3rem);
  color: var(--tx-ink);
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.tx-lockup img {
  width: 6rem;
  height: 6rem;
  object-fit: contain;
}

.tx-hero h1 {
  max-width: 18ch;
  color: var(--tx-ink);
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(3.1rem, 4.4vw, 4.75rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 1.02;
  text-wrap: balance;
}

.tx-hero h1 span {
  color: var(--tx-accent);
}

.tx-hero-copy > p {
  max-width: 39ch;
  margin-top: 1.5rem;
  color: var(--tx-muted);
  font-size: clamp(1rem, 1.35vw, 1.17rem);
  line-height: 1.6;
}

.tx-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.tx-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.15rem;
  padding: 0.78rem 1.22rem;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.tx-button:hover {
  transform: translateY(-2px);
}

.tx-button:active {
  transform: translateY(0);
}

.tx-button:focus-visible,
.tx-handoff-product:focus-visible {
  outline: 2px solid var(--tx-accent);
  outline-offset: 4px;
}

.tx-button-primary {
  background: var(--tx-accent);
  color: var(--tx-accent-ink);
}

.tx-button-primary:hover {
  background: #a6fcff;
}

.tx-button-secondary {
  border-color: rgba(169, 219, 231, 0.32);
  background: rgba(16, 42, 57, 0.78);
  color: #eefbff;
}

.tx-button-secondary:hover {
  border-color: var(--tx-accent);
  background: #163344;
}

.tx-handoff {
  padding-block: clamp(4rem, 7vw, 7rem);
  border-top: 1px solid var(--tx-rule);
  border-bottom: 1px solid var(--tx-rule);
  background: #091825;
}

.tx-handoff-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.tx-handoff h2,
.tx-section-heading h2,
.tx-evidence h2,
.tx-cta h2 {
  max-width: 17ch;
  color: var(--tx-ink);
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(2.25rem, 3.7vw, 4rem);
  letter-spacing: -0.055em;
  line-height: 1.08;
  text-wrap: balance;
}

.tx-handoff-intro p,
.tx-section-heading p,
.tx-evidence-copy > p,
.tx-cta p {
  max-width: 55ch;
  margin-top: 1.15rem;
  color: var(--tx-muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.tx-handoff-path {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 2.2rem minmax(0, 1fr);
  align-items: center;
  gap: 0.8rem;
}

.tx-handoff-product {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 6rem;
  padding: 0.95rem;
  border: 1px solid var(--tx-rule);
  border-radius: 18px;
  background: #102333;
  color: var(--tx-ink);
  text-decoration: none;
}

.tx-handoff-product-current {
  border-color: rgba(89, 247, 255, 0.42);
  background: linear-gradient(140deg, #143247, #0d202e);
}

.tx-handoff-product img {
  flex: 0 0 auto;
  width: 4rem;
  height: 4rem;
  object-fit: contain;
}
.tx-handoff-product img[src*="tunnel-x-mark"] { scale: 1.27; }

.tx-handoff-product span {
  display: grid;
  gap: 0.2rem;
}

.tx-handoff-product strong {
  font-size: 0.98rem;
}

.tx-handoff-product small {
  color: var(--tx-muted);
  font-size: 0.76rem;
  line-height: 1.25;
}

.tx-handoff-line {
  height: 1px;
  background: var(--tx-accent);
  box-shadow: 0 0 12px rgba(89, 247, 255, 0.5);
}

.tx-encryption {
  --tx-ink: #f2fbff;
  --tx-muted: #abc5d1;
  --tx-accent: #59f7ff;
  padding-block: clamp(5rem, 8vw, 8rem);
  background: #06111b;
  color: var(--tx-ink);
}

.tx-encryption-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.7fr);
  align-items: end;
  gap: 2.5rem;
  margin-bottom: clamp(2.7rem, 5vw, 4.5rem);
}

.tx-eyebrow {
  display: block;
  margin-bottom: 1rem;
  color: var(--tx-accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.tx-encryption h2 {
  max-width: 18ch;
  color: var(--tx-ink);
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(2.4rem, 4.4vw, 4.7rem);
  letter-spacing: -0.06em;
  line-height: 1.05;
  text-wrap: balance;
}

.tx-encryption h2 span { color: var(--tx-accent); }

.tx-encryption-intro p {
  max-width: 43ch;
  padding-bottom: 0.3rem;
  color: var(--tx-muted);
  font-size: 1.06rem;
  line-height: 1.6;
}

.tx-film {
  position: relative;
  isolation: isolate;
  width: 100%;
  height: clamp(560px, 53vw, 700px);
  overflow: hidden;
  background: #071420;
}

.tx-film::before {
  position: absolute;
  z-index: 0;
  inset: -3%;
  background: url("assets/tunnel-x/tunnel-x-hero.png") center 55% / cover no-repeat;
  content: "";
  opacity: 0.27;
  transform: scale(1.03);
  animation: tx-scene-drift 18s ease-in-out infinite alternate;
  animation-play-state: paused;
}

.tx-film.is-active::before { animation-play-state: running; }

.tx-film-canvas,
.tx-film-grain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.tx-film-canvas { z-index: 1; }

.tx-film-grain {
  z-index: 2;
  background:
    linear-gradient(90deg, rgba(3, 12, 21, 0.76), transparent 32%, transparent 68%, rgba(3, 12, 21, 0.76)),
    linear-gradient(180deg, rgba(3, 12, 21, 0.65), transparent 28%, transparent 72%, rgba(3, 12, 21, 0.68)),
    repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(184, 245, 255, 0.01) 4px);
}

.tx-film-inner {
  position: relative;
  z-index: 3;
  height: 100%;
}

.tx-film-bar,
.tx-film-footer {
  position: absolute;
  right: 0;
  left: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.tx-film-bar { top: clamp(1.5rem, 3vw, 2.5rem); }

.tx-film-live {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #cceaf3;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.tx-film-live-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #72eadb;
  box-shadow: 0 0 10px rgba(114, 234, 219, 0.75);
  animation: tx-live-breathe 2.5s ease-in-out infinite;
  animation-play-state: paused;
}

.tx-film.is-active .tx-film-live-dot { animation-play-state: running; }

.tx-film-stage { position: relative; height: 100%; }

.tx-film-readout,
.tx-film-core {
  position: absolute;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.tx-film-readout {
  top: 23%;
  width: 28%;
  min-height: 14.5rem;
  padding-left: 1.2rem;
  border-left: 2px solid rgba(89, 247, 255, 0.78);
  text-shadow: 0 2px 15px #06111b;
}

.tx-film-device { left: 0; }

.tx-film-sink {
  right: 0;
  align-items: flex-end;
  width: 26%;
  padding-right: 1.2rem;
  padding-left: 0;
  border-right: 2px solid rgba(114, 234, 219, 0.65);
  border-left: 0;
  text-align: right;
}

.tx-film.is-sealing .tx-film-device { border-left-color: #c7feff; }
.tx-film.is-processed .tx-film-sink { border-right-color: #b1ffe4; }

.tx-film-kicker {
  margin-bottom: 1.45rem;
  color: #8fd1df;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tx-film-label,
.tx-film-humidity,
.tx-film-sink-reading { color: #c8dfe8; font-size: 0.98rem; }

.tx-film-temperature {
  margin-block: 0.25rem 0.45rem;
  color: #f4feff;
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(3.2rem, 5.5vw, 6.1rem);
  letter-spacing: -0.085em;
  line-height: 1;
  white-space: nowrap;
}

.tx-film-temperature small {
  margin-left: 0.15rem;
  color: #a0eef3;
  font-size: 0.4em;
  letter-spacing: -0.05em;
}

.tx-film-humidity b { margin-left: 0.45rem; color: #ffffff; }

.tx-film-status {
  margin-top: auto;
  padding-top: 1.3rem;
  color: #8fc4d3;
  font-size: 0.77rem;
  font-variant-numeric: tabular-nums;
}

.tx-film-core {
  top: 18%;
  left: 50%;
  align-items: center;
  width: 32%;
  text-align: center;
  transform: translateX(-50%);
}

.tx-film-core img {
  width: clamp(7rem, 8.5vw, 9.5rem);
  height: auto;
  margin-bottom: 0.7rem;
  object-fit: contain;
  filter: drop-shadow(0 0 22px rgba(89, 247, 255, 0.5));
}

.tx-film-core strong {
  color: #e6fcff;
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(1.15rem, 1.8vw, 1.8rem);
  letter-spacing: -0.035em;
}

.tx-film-core span {
  margin-top: 0.4rem;
  color: #96c5d3;
  font-size: 0.81rem;
}

.tx-film-cipher {
  display: block;
  margin-top: 1.25rem;
}

.tx-film-cipher code {
  color: #bcfaff;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: clamp(0.68rem, 1.05vw, 0.81rem);
  letter-spacing: 0.12em;
  text-shadow: 0 0 12px rgba(89, 247, 255, 0.35);
  white-space: nowrap;
}

.tx-film.is-transmitting .tx-film-cipher code {
  animation: tx-cipher-glow 1.35s ease-in-out infinite;
}

.tx-film-sink-mark {
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  margin-bottom: 0.6rem;
  border: 1px solid #79edd1;
  border-radius: 50%;
  color: #97ffe0;
  font-size: 1rem;
  opacity: 0.35;
}

.tx-film.has-processed .tx-film-sink-mark { opacity: 1; }
.tx-film.is-processed .tx-film-sink-mark { animation: tx-arrival-flash 680ms ease-out 1; }

.tx-film-sink-heading {
  color: #f0fff9;
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(1.7rem, 2.5vw, 2.6rem);
  letter-spacing: -0.055em;
}

.tx-film-sink-reading { margin-top: 0.25rem; white-space: nowrap; }
.tx-film-sink-reading i { color: #75b5c5; font-style: normal; }

.tx-film-footer {
  bottom: clamp(1.5rem, 3vw, 2.5rem);
  padding-top: 1rem;
  border-top: 1px solid rgba(156, 222, 237, 0.2);
  color: #a5cbd7;
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.tx-film-footer span:nth-child(2) { color: #d9faff; }
.tx-film-footer b { color: #efffff; font-variant-numeric: tabular-nums; }

.tx-flow-note {
  margin-top: 0.85rem;
  color: #9dbac7;
  font-size: 0.78rem;
}

@keyframes tx-live-breathe {
  50% { opacity: 0.45; box-shadow: 0 0 17px rgba(114, 234, 219, 0.32); }
}

@keyframes tx-scene-drift {
  to { transform: scale(1.1) translateX(-1.2%); }
}

@keyframes tx-arrival-flash {
  50% { box-shadow: 0 0 0 9px rgba(114, 234, 219, 0.14); }
}

@keyframes tx-cipher-glow {
  50% { color: #f0ffff; text-shadow: 0 0 21px rgba(89, 247, 255, 0.82); }
}

.tx-protection {
  padding-block: clamp(5rem, 8vw, 8rem);
  background: var(--tx-bg);
}

.tx-section-heading {
  max-width: 42rem;
  margin-bottom: clamp(2rem, 4vw, 3.6rem);
}

.tx-section-heading h2 {
  max-width: 18ch;
}

.tx-feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  grid-template-rows: repeat(2, minmax(13rem, auto));
  gap: 1.1rem;
}

.tx-feature {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2.35rem);
  border: 1px solid var(--tx-rule);
  border-radius: 18px;
  background: var(--tx-surface);
}

.tx-feature-primary {
  display: flex;
  grid-row: span 2;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 27rem;
  background: linear-gradient(145deg, #123850, #0a1a29 65%);
}

.tx-feature-visual {
  position: absolute;
  top: -19%;
  right: -5%;
  width: min(71%, 24rem);
  opacity: 0.45;
  transform: rotate(-14deg);
  pointer-events: none;
}

.tx-feature-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.tx-feature-copy {
  position: relative;
  z-index: 1;
}

.tx-feature-verify {
  background: linear-gradient(135deg, #102c3b, #0b1c2b);
}

.tx-feature-rekey {
  background: #102230;
}

.tx-feature-index {
  display: block;
  margin-bottom: 1.5rem;
  color: var(--tx-accent);
  font-size: 0.79rem;
  font-weight: 700;
}

.tx-feature h3 {
  max-width: 16ch;
  color: var(--tx-ink);
  font-family: Syne, "Space Grotesk", sans-serif;
  font-size: clamp(1.35rem, 2.1vw, 2.1rem);
  letter-spacing: -0.04em;
  line-height: 1.18;
}

.tx-feature p {
  max-width: 48ch;
  margin-top: 0.9rem;
  color: var(--tx-muted);
  font-size: 0.97rem;
  line-height: 1.6;
}

.tx-evidence {
  padding-block: clamp(5rem, 8vw, 8rem);
  border-block: 1px solid var(--tx-rule);
  background: #0a1926;
}

.tx-evidence-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
}

.tx-evidence-note {
  padding-left: 1.1rem;
  border-left: 2px solid var(--tx-accent);
  font-size: 0.89rem !important;
}

.tx-evidence-list {
  border-top: 1px solid var(--tx-rule);
}

.tx-evidence-list > div {
  display: grid;
  gap: 0.45rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--tx-rule);
}

.tx-evidence-list strong {
  color: var(--tx-ink);
  font-size: 1.18rem;
}

.tx-evidence-list span {
  color: var(--tx-muted);
  font-size: 0.95rem;
}

.tx-cta {
  padding-block: clamp(5rem, 8vw, 8rem);
  background: #06101a;
}

.tx-cta-layout {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2.5rem;
}

.tx-cta h2 {
  max-width: 22ch;
}

.tx-cta p {
  max-width: 46ch;
}

.tx-cta .tx-button {
  flex: 0 0 auto;
}

html[data-theme="light"] body.tunnel-x-page {
  --tx-bg: #edf5f9;
  --tx-surface: #ffffff;
  --tx-surface-soft: #e5f0f5;
  --tx-ink: #102b3b;
  --tx-muted: #466271;
  --tx-accent: #087f94;
  --tx-accent-ink: #ffffff;
  --tx-rule: rgba(19, 91, 116, 0.18);
  background: var(--tx-bg);
}

html[data-theme="light"] .tx-hero {
  --tx-ink: #102a3f;
  --tx-muted: #496779;
  --tx-accent: #087f94;
  --tx-accent-ink: #ffffff;
  background: #edf5f9;
}

html[data-theme="light"] .tx-hero::before {
  filter: brightness(1.45) saturate(0.68);
  opacity: 0.28;
}

html[data-theme="light"] .tx-hero::after {
  background:
    linear-gradient(90deg, rgba(237, 245, 249, 0.99) 0%, rgba(237, 245, 249, 0.92) 34%, rgba(237, 245, 249, 0.68) 60%, rgba(237, 245, 249, 0.2) 100%),
    linear-gradient(0deg, #edf5f9 0%, rgba(237, 245, 249, 0.18) 19%, transparent 54%, rgba(237, 245, 249, 0.42) 100%);
}

html[data-theme="light"] .tx-hero .tx-button-secondary {
  border-color: rgba(16, 75, 94, 0.24);
  background: rgba(255, 255, 255, 0.78);
  color: #123344;
}

html[data-theme="light"] .tx-hero .tx-button-secondary:hover {
  border-color: #087f94;
  background: #d9edf4;
}

html[data-theme="light"] .tx-handoff,
html[data-theme="light"] .tx-evidence {
  background: #e5f0f6;
}

html[data-theme="light"] .tx-handoff-product,
html[data-theme="light"] .tx-handoff-product-current {
  background: #ffffff;
}

html[data-theme="light"] .tx-handoff-product-current {
  border-color: rgba(8, 127, 148, 0.48);
}

html[data-theme="light"] .tx-feature-primary,
html[data-theme="light"] .tx-feature-verify,
html[data-theme="light"] .tx-feature-rekey {
  background: #ffffff;
}

html[data-theme="light"] .tx-feature-primary {
  background: linear-gradient(145deg, #d7edf5, #ffffff 72%);
}

html[data-theme="light"] .tx-feature-visual {
  opacity: 0.28;
}

html[data-theme="light"] .tx-cta {
  background: #edf5f9;
}

/* The encryption demo has its own dark-scene colors, so map the whole scene
   into the shared light palette when the site theme changes. */
html[data-theme="light"] .tx-encryption {
  --tx-ink: #102a3f;
  --tx-muted: #496779;
  --tx-accent: #087f94;
  background: #edf5f9;
  color: var(--tx-ink);
}

html[data-theme="light"] .tx-film {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(255, 255, 255, 0.9), transparent 48%),
    linear-gradient(135deg, #e9f3f7, #dcebf2);
  color: #102a3f;
  transition: background 260ms ease, color 260ms ease;
}

html[data-theme="light"] .tx-film::before {
  filter: brightness(1.45) saturate(0.58);
  opacity: 0.12;
  transition: filter 260ms ease, opacity 260ms ease;
}

html[data-theme="light"] .tx-film-grain {
  background:
    linear-gradient(90deg, rgba(26, 75, 96, 0.045), transparent 32%, transparent 68%, rgba(26, 75, 96, 0.045)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent 28%, transparent 72%, rgba(26, 75, 96, 0.035)),
    repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(23, 83, 105, 0.018) 4px);
}

html[data-theme="light"] .tx-film-live,
html[data-theme="light"] .tx-film-kicker {
  color: #087f94;
}

html[data-theme="light"] .tx-film-live-dot {
  background: #0a9cac;
  box-shadow: 0 0 9px rgba(8, 127, 148, 0.32);
}

html[data-theme="light"] .tx-film-readout {
  border-left-color: rgba(8, 127, 148, 0.72);
  text-shadow: none;
}

html[data-theme="light"] .tx-film-sink {
  border-right-color: rgba(28, 145, 119, 0.7);
  border-left: 0;
}

html[data-theme="light"] .tx-film.is-sealing .tx-film-device {
  border-left-color: #087f94;
}

html[data-theme="light"] .tx-film.is-processed .tx-film-sink {
  border-right-color: #158866;
}

html[data-theme="light"] .tx-film-label,
html[data-theme="light"] .tx-film-humidity,
html[data-theme="light"] .tx-film-sink-reading {
  color: #385769;
}

html[data-theme="light"] .tx-film-temperature,
html[data-theme="light"] .tx-film-sink-heading {
  color: #102a3f;
}

html[data-theme="light"] .tx-film-temperature small,
html[data-theme="light"] .tx-film-sink-reading i {
  color: #087f94;
}

html[data-theme="light"] .tx-film-humidity b {
  color: #102a3f;
}

html[data-theme="light"] .tx-film-status,
html[data-theme="light"] .tx-film-core span {
  color: #547181;
}

html[data-theme="light"] .tx-film-core img {
  filter: drop-shadow(0 8px 18px rgba(8, 127, 148, 0.2));
}

html[data-theme="light"] .tx-film-core::before {
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.45) 52%, transparent 78%);
}

html[data-theme="light"] .tx-film-core strong {
  color: #15384a;
}

html[data-theme="light"] .tx-film-cipher code {
  color: #087f94;
  text-shadow: none;
}

html[data-theme="light"] .tx-film-sink-mark {
  border-color: #087f94;
  background: rgba(255, 255, 255, 0.62);
  color: #087f94;
}

html[data-theme="light"] .tx-film-footer {
  border-top-color: rgba(34, 102, 125, 0.2);
  color: #547181;
}

html[data-theme="light"] .tx-film-footer span:nth-child(2),
html[data-theme="light"] .tx-film-footer b {
  color: #21485a;
}

html[data-theme="light"] .tx-flow-note {
  color: #547181;
}

html[data-theme="light"] .tx-button-primary:hover {
  background: #046d81;
}

html[data-theme="light"] .tx-button-secondary {
  border-color: rgba(16, 75, 94, 0.3);
  background: #ffffff;
  color: #123344;
}

html[data-theme="light"] .tx-button-secondary:hover {
  border-color: var(--tx-accent);
  background: #d9edf4;
}

@media (max-width: 1020px) {
  .tx-hero h1 {
    font-size: clamp(2.9rem, 5vw, 4rem);
  }

  .tx-handoff-layout {
    gap: 2.5rem;
  }

  .tx-handoff-path {
    gap: 0.5rem;
  }
}

@media (max-width: 767px) {
  .tx-shell {
    width: min(100% - 2rem, 34rem);
  }

  .tx-hero {
    min-height: 760px;
    padding-block: 7rem 5rem;
  }

  .tx-handoff-layout,
  .tx-evidence-layout {
    grid-template-columns: 1fr;
  }

  .tx-hero::before {
    background-position: 62% center;
    opacity: 0.72;
  }

  .tx-hero::after {
    background: linear-gradient(180deg, rgba(6, 16, 26, 0.95), rgba(6, 16, 26, 0.82) 49%, rgba(6, 16, 26, 0.42) 76%, #06101a);
  }

  .tx-hero h1 {
    max-width: 17ch;
    font-size: clamp(3rem, 9vw, 4.5rem);
  }

  .tx-lockup {
    margin-bottom: 1.5rem;
  }

  .tx-handoff-layout,
  .tx-evidence-layout {
    gap: 2rem;
  }

  .tx-encryption-intro {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .tx-film { height: 960px; }

  .tx-film::before { background-position: 70% 55%; }

  .tx-film-readout {
    top: 16%;
    width: 72%;
    min-height: 10.5rem;
  }

  .tx-film-device { left: 0; }

  .tx-film-core {
    top: 39%;
    left: 50%;
    align-items: center;
    width: min(78%, 20rem);
    text-align: center;
    transform: translateX(-50%);
  }

  .tx-film-core::before {
    position: absolute;
    z-index: -1;
    inset: -0.8rem -0.5rem;
    background: radial-gradient(ellipse at center, rgba(7, 20, 32, 0.8), rgba(7, 20, 32, 0.42) 52%, transparent 78%);
    content: "";
    pointer-events: none;
  }

  .tx-film-core img { width: 7rem; }

  .tx-film-sink {
    top: 66%;
    right: 0;
    left: auto;
    align-items: flex-end;
    width: 72%;
    min-height: 9.8rem;
    padding-right: 1.2rem;
    padding-left: 0;
    border-right: 2px solid rgba(114, 234, 219, 0.65);
    border-left: 0;
    text-align: right;
  }

  .tx-film.is-processed .tx-film-sink {
    border-right-color: #b1ffe4;
    border-left-color: transparent;
  }

  .tx-film-footer {
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
  }

  .tx-feature-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .tx-feature-primary {
    grid-row: auto;
    min-height: 23rem;
  }

  .tx-feature-verify,
  .tx-feature-rekey {
    min-height: 12rem;
  }

  .tx-cta-layout {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .tx-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .tx-handoff-path {
    grid-template-columns: 1fr;
  }

  .tx-handoff-line {
    width: 1px;
    height: 1rem;
    margin-left: 2rem;
  }

  .tx-film-live { font-size: 0.65rem; }
  .tx-film-footer span { flex-basis: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .tunnel-x-page .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .tx-button { transition: none; }
  .tx-film::before { animation: none; }
  .tx-film-live-dot,
  .tx-film.is-processed .tx-film-sink-mark,
  .tx-film.is-transmitting .tx-film-cipher code { animation: none; }
}