/* ShuKey marketing surface — scoped away from utility pages. */
.landing-page {
  --landing-width: 1360px;
  --content-width: 1180px;
  --acid: #79f2ac;
  --acid-soft: #bafbd3;
  --night: #050b08;
  --landing-line: rgba(178, 226, 198, .14);
  --landing-muted: #91a79a;
  background:
    radial-gradient(circle at 82% 10%, rgba(70, 217, 138, .16), transparent 28rem),
    radial-gradient(circle at 8% 45%, rgba(31, 96, 63, .12), transparent 34rem),
    var(--night);
}

.landing-page::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, .018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .018) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: linear-gradient(to bottom, #000 0 60%, transparent 94%);
}

.landing-page .nav {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(var(--landing-width), calc(100% - 64px));
  height: 96px;
  border-bottom-color: rgba(255, 255, 255, .075);
  transform: translateX(-50%);
}

.landing-page .brand {
  font-size: 23px;
  letter-spacing: -.045em;
}

.landing-page .brand-mark {
  width: 34px;
  height: 34px;
  border-color: rgba(121, 242, 172, .32);
  border-radius: 50%;
  background: rgba(121, 242, 172, .08);
  box-shadow: inset 0 0 18px rgba(121, 242, 172, .08);
}

.landing-page .nav nav { gap: 34px; }

.landing-page .nav nav a {
  position: relative;
  font-size: 12px;
  letter-spacing: .04em;
}

.landing-page .nav nav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  background: var(--acid);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}

.landing-page .nav nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.landing-page main {
  width: 100%;
  max-width: none;
}

.landing-page .hero {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 100svh;
  padding: 132px max(32px, calc((100vw - var(--landing-width)) / 2)) 74px;
  grid-template-columns: minmax(430px, .88fr) minmax(560px, 1.12fr);
  gap: clamp(30px, 4vw, 84px);
  align-items: center;
  overflow: hidden;
}

.landing-page .hero::before {
  position: absolute;
  top: 50%;
  right: -14vw;
  width: min(78vw, 1080px);
  height: min(78vw, 1080px);
  border: 1px solid rgba(121, 242, 172, .08);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(73, 218, 136, .12), transparent 54%),
    repeating-radial-gradient(circle, transparent 0 74px, rgba(121, 242, 172, .035) 75px 76px);
  content: "";
  transform: translateY(-50%);
  pointer-events: none;
}

.landing-page .hero::after {
  position: absolute;
  right: max(32px, calc((100vw - var(--landing-width)) / 2));
  bottom: 28px;
  color: #587164;
  content: "PAIR  /  SIGN  /  VERIFY  /  UNLOCK";
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 9px;
  letter-spacing: .18em;
}

.landing-page .hero-copy {
  max-width: 610px;
  padding: 0;
}

.landing-page .hero-wordmark {
  display: flex;
  margin: 0 0 46px;
  align-items: baseline;
  gap: 16px;
}

.landing-page .hero-wordmark strong {
  color: var(--acid-soft);
  font-size: clamp(25px, 2vw, 33px);
  font-weight: 780;
  letter-spacing: -.05em;
}

.landing-page .hero-wordmark span {
  color: #557064;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 9px;
  letter-spacing: .18em;
}

.landing-page .hero .eyebrow {
  margin-bottom: 20px;
  color: #87b89c;
  font-size: 10px;
  letter-spacing: .21em;
}

.landing-page .hero h1 {
  max-width: none;
  font-size: clamp(58px, 5.35vw, 88px);
  font-weight: 690;
  letter-spacing: -.072em;
  line-height: .94;
}

.landing-page .hero-line-accent {
  background: linear-gradient(105deg, #f2faf5 5%, var(--acid) 52%, #d7ffe6 96%);
  -webkit-background-clip: text;
  background-clip: text;
}

.landing-page .lead {
  max-width: 560px;
  margin-top: 30px;
  color: #9caf9f;
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.78;
}

.landing-page .actions { margin: 34px 0 24px; }

.landing-page .primary,
.landing-page .secondary {
  min-height: 54px;
  padding: 0 24px;
  border-radius: 2px;
  font-size: 13px;
}

.landing-page .primary {
  background: var(--acid);
  box-shadow: none;
}

.landing-page .primary:hover {
  box-shadow: 0 14px 42px rgba(70, 217, 138, .2);
}

.landing-page .secondary {
  border-color: rgba(172, 222, 192, .28);
  background: transparent;
}

.landing-page .hero-facts {
  gap: 22px;
  color: #667c70;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 10px;
}

.landing-page .hero-visual {
  position: relative;
  min-width: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

.landing-page .hero-visual::before {
  inset: 8% 5%;
  border-color: rgba(121, 242, 172, .08);
  border-radius: 50%;
  transform: rotate(-8deg);
}

.landing-page .hero-visual::after {
  position: absolute;
  top: 10%;
  right: 7%;
  padding: 7px 9px;
  border-left: 1px solid var(--acid);
  color: #678176;
  content: "AUTH CHANNEL · LOCAL";
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 8px;
  letter-spacing: .16em;
}

.landing-page .visual-glow {
  width: 58%;
  height: 58%;
  background: rgba(85, 234, 149, .15);
  filter: blur(70px);
}

.landing-page .unlock-illustration {
  z-index: 1;
  width: 112%;
  max-width: 830px;
  margin-left: -6%;
  filter: drop-shadow(0 36px 60px rgba(0, 0, 0, .35));
}

.landing-page .trust-strip {
  width: min(var(--landing-width), calc(100% - 64px));
  margin: 0 auto;
  padding: 0;
  border-color: var(--landing-line);
}

.landing-page .trust-strip span {
  min-height: 70px;
  border-color: var(--landing-line);
  color: #748a7e;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 9px;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.landing-page .section {
  width: min(var(--content-width), calc(100% - 64px));
  margin: 0 auto;
  padding-top: clamp(130px, 13vw, 210px);
}

.landing-page .section-heading {
  max-width: 880px;
  margin-bottom: 74px;
}

.landing-page .section-heading h2,
.landing-page .security-copy h2,
.landing-page .download-section h2 {
  font-size: clamp(46px, 5.6vw, 78px);
  font-weight: 610;
  letter-spacing: -.065em;
  line-height: 1;
}

.landing-page .security-copy h2 {
  font-size: clamp(44px, 4.1vw, 60px);
  letter-spacing: -.055em;
}

.landing-page .download-section h2 {
  max-width: 620px;
  font-size: clamp(44px, 4vw, 58px);
  letter-spacing: -.055em;
}

.landing-page .section-heading > p:last-child {
  max-width: 610px;
  color: var(--landing-muted);
  font-size: 15px;
}

.landing-page .scenario-grid {
  gap: 0;
  border-top: 1px solid var(--landing-line);
  border-bottom: 1px solid var(--landing-line);
}

.landing-page .scenario-card {
  min-height: 430px;
  padding: 38px 34px 42px;
  border: 0;
  border-right: 1px solid var(--landing-line);
  border-radius: 0;
  background: transparent;
  transition: background .35s ease;
}

.landing-page .scenario-card:last-child { border-right: 0; }
.landing-page .scenario-card.featured { background: transparent; }
.landing-page .scenario-card::after { display: none; }

.landing-page .scenario-card:hover {
  border-color: var(--landing-line);
  background: linear-gradient(180deg, rgba(121, 242, 172, .06), transparent);
  transform: none;
}

.landing-page .scene-icon {
  height: 180px;
  margin: -8px -10px 38px;
  border-radius: 0;
  background: transparent;
}

.landing-page .scene-icon::after {
  right: 6%;
  left: 6%;
  background: #243d31;
}

.landing-page .card-kicker {
  margin-bottom: 12px;
  color: #6fa989;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
}

.landing-page .scenario-card h3 {
  font-size: clamp(24px, 2.2vw, 31px);
  font-weight: 590;
}

.landing-page .scenario-card > p:last-child {
  max-width: 300px;
  font-size: 13px;
}

.landing-page .routes-section {
  display: grid;
  padding-top: clamp(150px, 15vw, 240px);
  grid-template-columns: .72fr 1.28fr;
  gap: clamp(70px, 9vw, 150px);
  align-items: start;
}

.landing-page .routes-section .section-heading {
  position: sticky;
  top: 90px;
  margin: 0;
}

.landing-page .route-list { border-color: var(--landing-line); }

.landing-page .route-card {
  min-height: 190px;
  padding: 34px 0;
  border-color: var(--landing-line);
  grid-template-columns: 44px 86px minmax(0, 1fr);
  gap: 24px;
}

.landing-page .route-card:hover { background: transparent; }

.landing-page .route-card:hover .route-symbol {
  border-color: var(--acid);
  transform: rotate(-3deg) scale(1.04);
}

.landing-page .route-symbol {
  border-radius: 50%;
  background: rgba(121, 242, 172, .025);
  transition: border-color .25s ease, transform .25s ease;
}

.landing-page .route-time { display: none; }

.landing-page .route-card h3 {
  font-size: 26px;
  font-weight: 590;
}

.landing-page .security-section {
  position: relative;
  width: min(var(--landing-width), calc(100% - 64px));
  padding: clamp(120px, 12vw, 190px) max(36px, 5vw);
  border-top: 1px solid var(--landing-line);
  border-bottom: 1px solid var(--landing-line);
  grid-template-columns: 1fr .92fr;
  gap: clamp(70px, 8vw, 130px);
  overflow: hidden;
}

.landing-page .security-section::before {
  position: absolute;
  right: -15%;
  bottom: -40%;
  width: 720px;
  height: 720px;
  border: 1px solid rgba(121, 242, 172, .08);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 0 90px rgba(121, 242, 172, .015), 0 0 0 180px rgba(121, 242, 172, .01);
}

.landing-page .lead-small {
  max-width: 610px;
  color: var(--landing-muted);
}

.landing-page .security-list { margin-bottom: 0; }
.landing-page .security-list li { border-color: var(--landing-line); }
.landing-page .security-list small { color: #809487; }

.landing-page .security-diagram {
  min-height: 600px;
  padding: 54px 24px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.landing-page .security-diagram::before {
  background-size: 56px 56px;
  opacity: .7;
}

.landing-page .diagram-node {
  border-radius: 2px;
  background: rgba(9, 25, 16, .92);
}

.landing-page .local-vault { border-radius: 2px; }
.landing-page .steps-section .section-heading { max-width: 960px; }

.landing-page .steps {
  gap: 0;
  border-top: 1px solid var(--landing-line);
  border-bottom: 1px solid var(--landing-line);
}

.landing-page .steps li {
  min-height: 290px;
  padding: 36px;
  border: 0;
  border-right: 1px solid var(--landing-line);
  background: transparent;
}

.landing-page .steps li:last-child { border-right: 0; }

.landing-page .steps li > span {
  margin-bottom: 78px;
  border-color: #365344;
  border-radius: 2px;
}

.landing-page .download-section {
  width: 100%;
  max-width: none;
  margin: clamp(150px, 15vw, 240px) 0 0;
  padding: clamp(80px, 9vw, 150px) max(32px, calc((100vw - var(--content-width)) / 2));
  border: 0;
  border-radius: 0;
  background:
    radial-gradient(circle at 78% 18%, rgba(121, 242, 172, .14), transparent 30rem),
    #08140e;
  box-shadow: none;
  color: var(--ink);
  grid-template-columns: 1.05fr .95fr;
}

.landing-page .download-section .eyebrow,
.landing-page .download-section .price { color: var(--acid); }

.landing-page .download-section > div:first-child > p:not(.eyebrow):not(.price),
.landing-page .compatibility-note p { color: var(--landing-muted); }

.landing-page .download-section .primary {
  background: var(--acid);
  color: #07110c;
}

.landing-page .download-section .secondary {
  border-color: rgba(121, 242, 172, .3);
  color: var(--ink);
}

.landing-page .download-cards {
  gap: 12px;
  border-top: 0;
}

.landing-page .download-list-label {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 720;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.landing-page .download-cards a {
  min-height: 108px;
  padding: 20px 22px;
  border: 1px solid rgba(121, 242, 172, .32);
  border-radius: 14px;
  background:
    linear-gradient(90deg, rgba(121, 242, 172, .075), rgba(121, 242, 172, .025));
  grid-template-columns: 42px 1fr auto;
  box-shadow: inset 3px 0 0 rgba(121, 242, 172, .46);
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
}

.landing-page .download-cards a:hover {
  border-color: rgba(121, 242, 172, .72);
  background:
    linear-gradient(90deg, rgba(121, 242, 172, .13), rgba(121, 242, 172, .055));
  box-shadow: inset 3px 0 0 var(--acid), 0 14px 35px rgba(0, 0, 0, .16);
  transform: translateX(5px);
}

.landing-page .download-cards span {
  color: var(--acid);
  font-size: 11px;
}

.landing-page .download-cards strong {
  font-size: 19px;
  letter-spacing: -.02em;
}

.landing-page .download-cards small {
  margin-top: 5px;
  color: var(--landing-muted);
  font-size: 11px;
}

.landing-page .download-cards b {
  min-width: 88px;
  padding: 10px 13px;
  border: 1px solid var(--acid);
  border-radius: 999px;
  background: var(--acid);
  color: #07110c;
  font-size: 11px;
  font-weight: 720;
  letter-spacing: .05em;
  text-align: center;
}

.landing-page .compatibility-note { border-color: rgba(121, 242, 172, .16); }
.landing-page .compatibility-note a { color: var(--acid); }

.landing-page footer {
  width: min(var(--landing-width), calc(100% - 64px));
  margin-top: 0;
  padding-top: 64px;
}

.motion-ready .landing-page .hero-copy.reveal { transform: none; }

.motion-ready .landing-page .hero-copy.is-visible .hero-wordmark,
.motion-ready .landing-page .hero-copy.is-visible .eyebrow,
.motion-ready .landing-page .hero-copy.is-visible .hero-line,
.motion-ready .landing-page .hero-copy.is-visible .lead,
.motion-ready .landing-page .hero-copy.is-visible .actions,
.motion-ready .landing-page .hero-copy.is-visible .hero-facts {
  animation: landing-rise .72s cubic-bezier(.2, .7, .2, 1) both;
}

.motion-ready .landing-page .hero-copy.is-visible .eyebrow { animation-delay: .05s; }
.motion-ready .landing-page .hero-copy.is-visible .hero-line:first-child { animation-delay: .1s; }
.motion-ready .landing-page .hero-copy.is-visible .hero-line:nth-child(2) { animation-delay: .17s; }
.motion-ready .landing-page .hero-copy.is-visible .lead { animation-delay: .24s; }
.motion-ready .landing-page .hero-copy.is-visible .actions { animation-delay: .31s; }
.motion-ready .landing-page .hero-copy.is-visible .hero-facts { animation-delay: .37s; }

@keyframes landing-rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1120px) {
  .landing-page .hero {
    grid-template-columns: minmax(400px, .92fr) minmax(480px, 1.08fr);
    gap: 20px;
  }

  .landing-page .hero h1 { font-size: clamp(54px, 6vw, 72px); }
}

@media (max-width: 980px) {
  .landing-page .nav { width: min(100% - 40px, var(--landing-width)); }

  .landing-page .hero {
    min-height: auto;
    padding: 136px 24px 84px;
    grid-template-columns: 1fr;
  }

  .landing-page .hero-copy { max-width: 760px; }

  .landing-page .hero-visual {
    width: min(760px, 100%);
    margin: 10px auto 0;
  }

  .landing-page .unlock-illustration {
    width: 100%;
    margin: 0;
  }

  .landing-page .routes-section {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .landing-page .routes-section .section-heading { position: static; }
  .landing-page .security-section { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .landing-page .nav,
  .landing-page .trust-strip,
  .landing-page .section,
  .landing-page .security-section,
  .landing-page footer {
    width: min(100% - 30px, var(--landing-width));
  }

  .landing-page .nav { height: 76px; }
  .landing-page .nav.nav-enhanced nav { gap: 2px; }
  .landing-page .nav.nav-enhanced nav a { font-size: 14px; letter-spacing: 0; }
  .landing-page .nav.nav-enhanced nav a::after { display: none; }
  .landing-page .hero { padding: 112px 15px 72px; }
  .landing-page .hero::after { display: none; }
  .landing-page .hero-wordmark { margin-bottom: 34px; }
  .landing-page .hero-wordmark span { display: none; }

  .landing-page .hero h1 {
    font-size: clamp(40px, 12vw, 57px);
    letter-spacing: -.062em;
  }

  .landing-page .lead { font-size: 16px; }
  .landing-page .hero-facts { gap: 10px; }
  .landing-page .hero-visual::after { display: none; }
  .landing-page .trust-strip { grid-template-columns: 1fr 1fr; }
  .landing-page .trust-strip span { min-height: 58px; }

  .landing-page .section-heading h2,
  .landing-page .security-copy h2,
  .landing-page .download-section h2 {
    font-size: clamp(39px, 11.5vw, 56px);
  }

  .landing-page .scenario-grid { grid-template-columns: 1fr; }

  .landing-page .scenario-card {
    min-height: auto;
    padding: 28px 14px 40px;
    border-right: 0;
    border-bottom: 1px solid var(--landing-line);
  }

  .landing-page .scenario-card:last-child { border-bottom: 0; }
  .landing-page .scene-icon { height: 165px; }

  .landing-page .route-card {
    min-height: 160px;
    grid-template-columns: 30px 68px minmax(0, 1fr);
    gap: 16px;
  }

  .landing-page .route-symbol {
    width: 62px;
    height: 62px;
  }

  .landing-page .security-section { padding: 110px 18px; }

  .landing-page .security-diagram {
    min-height: 540px;
    padding: 40px 0;
  }

  .landing-page .steps { grid-template-columns: 1fr; }

  .landing-page .steps li {
    min-height: 220px;
    border-right: 0;
    border-bottom: 1px solid var(--landing-line);
  }

  .landing-page .steps li:last-child { border-bottom: 0; }
  .landing-page .steps li > span { margin-bottom: 40px; }

  .landing-page .download-section {
    padding: 88px 22px;
    grid-template-columns: 1fr;
  }

  .landing-page .download-cards a {
    padding: 18px 16px;
    grid-template-columns: 34px 1fr auto;
  }

  .landing-page .download-cards b {
    min-width: 76px;
    padding: 9px 10px;
  }
}

@media (max-width: 430px) {
  .landing-page .hero h1 { font-size: clamp(37px, 11.4vw, 49px); }
  .landing-page .hero-line { white-space: nowrap; }
  .landing-page .hero .actions > * { width: 100%; }

  .landing-page .download-cards a {
    grid-template-columns: 28px 1fr;
  }

  .landing-page .download-cards b {
    min-width: 0;
    margin-top: 10px;
    grid-column: 2;
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .motion-ready .landing-page .hero-copy.is-visible > * { animation: none; }
}