:root {
  color-scheme: dark;
  --ink: #f1f7f4;
  --muted: #92a8a5;
  --faint: #5b716f;
  --line: rgba(145, 170, 166, 0.2);
  --line-bright: rgba(101, 230, 208, 0.38);
  --bg: #091014;
  --surface: #101c21;
  --surface-light: #15252a;
  --cyan: #65e6d0;
  --orange: #ffb35c;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at 78% 6%, rgba(101, 230, 208, 0.12), transparent 24rem),
    radial-gradient(circle at 5% 55%, rgba(255, 179, 92, 0.05), transparent 25rem),
    var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, sans-serif;
  margin: 0;
  min-width: 320px;
}

body::before {
  background-image: linear-gradient(rgba(101, 230, 208, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(101, 230, 208, 0.04) 1px, transparent 1px);
  background-size: 54px 54px;
  content: "";
  inset: 0;
  opacity: 0.55;
  pointer-events: none;
  position: fixed;
  z-index: -1;
}

a {
  color: inherit;
}

.page-shell {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 0 32px;
}

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 32px;
  justify-content: space-between;
  min-height: 86px;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.05;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan);
  display: inline-flex;
  font-size: 13px;
  height: 35px;
  justify-content: center;
  letter-spacing: -0.12em;
  margin-right: 11px;
  padding-right: 3px;
  width: 35px;
}

.brand b {
  color: var(--cyan);
}

.site-nav {
  display: flex;
  gap: 31px;
  margin-left: auto;
}

.site-nav a,
.header-link,
.site-footer a {
  color: var(--muted);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.header-link:hover,
.site-footer a:hover {
  color: var(--cyan);
}

.header-link {
  border-left: 1px solid var(--line);
  padding-left: 28px;
}

.hero {
  align-items: center;
  display: grid;
  gap: clamp(44px, 8vw, 110px);
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  min-height: 690px;
  padding: 86px 0 104px;
}

.eyebrow,
.mono,
.panel-index,
.visual-label,
.hero-proof,
.live-status,
.signal-card-foot,
.site-footer,
.feature-number {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--cyan);
  font-size: 10px;
  font-weight: 700;
  margin: 0 0 25px;
}

.eyebrow-dot,
.live-status i {
  background: var(--orange);
  border-radius: 50%;
  display: inline-block;
  height: 6px;
  margin-right: 8px;
  vertical-align: 1px;
  width: 6px;
}

.hero h1 {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: clamp(48px, 6.3vw, 86px);
  letter-spacing: -0.075em;
  line-height: 0.93;
  margin: 0;
  max-width: 760px;
}

.hero-lede {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
  margin: 29px 0 34px;
  max-width: 550px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
}

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 2px;
  display: inline-flex;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  gap: 22px;
  justify-content: space-between;
  letter-spacing: 0.07em;
  min-height: 48px;
  padding: 0 18px;
  text-decoration: none;
  text-transform: uppercase;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}

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

.button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
}

.button-primary {
  background: var(--cyan);
  color: #0a1719;
}

.button-primary:hover {
  background: var(--ink);
}

.button-quiet {
  border-color: var(--line);
  color: var(--muted);
}

.button-quiet:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.hero-proof {
  color: var(--faint);
  display: flex;
  flex-wrap: wrap;
  font-size: 9px;
  gap: 20px;
  margin-top: 64px;
}

.hero-proof i {
  color: var(--orange);
  font-style: normal;
  margin-right: 5px;
}

.hero-visual {
  min-height: 420px;
  padding: 47px 0 34px 40px;
  position: relative;
}

.hero-visual::before {
  border: 1px solid var(--line);
  border-bottom: 0;
  border-right: 0;
  content: "";
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 86%;
}

.hero-visual::after {
  background: var(--cyan);
  content: "";
  height: 1px;
  left: -14px;
  position: absolute;
  top: 28px;
  transform: rotate(-39deg);
  transform-origin: left;
  width: 100px;
}

.visual-label {
  color: var(--faint);
  font-size: 9px;
  position: absolute;
}

.visual-label-top {
  left: 42px;
  top: 14px;
}

.visual-label-bottom {
  bottom: 2px;
  right: 13%;
}

.unit-rail {
  display: flex;
  flex-direction: column;
  gap: 13px;
  left: -1px;
  position: absolute;
  top: 96px;
  z-index: 1;
}

.unit-rail span {
  background: var(--bg);
  color: var(--faint);
  font: 700 10px "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.08em;
  padding: 6px 10px 6px 0;
}

.unit-rail .rail-active {
  color: var(--orange);
}

.unit-rail b {
  background: var(--cyan);
  height: 112px;
  left: 52px;
  opacity: 0.7;
  position: absolute;
  top: -6px;
  width: 1px;
}

.signal-card {
  background: linear-gradient(145deg, rgba(21, 37, 42, 0.97), rgba(10, 22, 26, 0.97));
  border: 1px solid var(--line-bright);
  box-shadow: 19px 19px 0 rgba(101, 230, 208, 0.08);
  margin-left: 45px;
  max-width: 360px;
  padding: 21px 22px 18px;
  position: relative;
  z-index: 2;
}

.signal-card::before {
  background: var(--orange);
  content: "";
  height: 9px;
  left: -1px;
  position: absolute;
  top: -1px;
  width: 9px;
}

.signal-card-head,
.signal-card-foot,
.panel-topline {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.mono,
.panel-index {
  color: var(--muted);
  font-size: 9px;
}

.live-status {
  color: var(--cyan);
  font-size: 8px;
}

.live-status i {
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  height: 5px;
  width: 5px;
}

.signal-row {
  align-items: baseline;
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.signal-source {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 23px;
}

.signal-row strong {
  font: 700 clamp(31px, 4vw, 45px) "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  letter-spacing: -0.1em;
}

.signal-row span {
  color: var(--orange);
  font: 700 13px "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

.signal-arrow {
  align-items: center;
  color: var(--cyan);
  display: flex;
  gap: 9px;
  justify-content: flex-end;
  margin: 9px 5px;
}

.signal-arrow span {
  background: var(--line-bright);
  height: 1px;
  width: 18px;
}

.signal-arrow b {
  font-size: 17px;
  font-weight: 400;
}

.signal-target strong {
  color: var(--cyan);
}

.signal-target span {
  color: var(--cyan);
}

.signal-card-foot {
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 8px;
  margin-top: 25px;
  padding-top: 15px;
}

.signal-card-foot b {
  color: var(--muted);
  font-weight: 400;
}

.section {
  border-top: 1px solid var(--line);
  padding: 115px 0;
}

.section-heading {
  align-items: end;
  display: grid;
  gap: 25px;
  grid-template-columns: 0.9fr 1.45fr 1fr;
  margin-bottom: 52px;
}

.section-heading .eyebrow {
  margin: 0;
}

.section-heading h2,
.privacy-copy h2,
.install-band h2 {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: clamp(31px, 4vw, 52px);
  letter-spacing: -0.065em;
  line-height: 0.95;
  margin: 0;
}

.section-heading > p:last-child,
.privacy-copy > p:last-child,
.install-band > div > p:last-child {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.demo-layout {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr 1fr;
}

.demo-panel,
.result-panel {
  border: 1px solid var(--line);
  min-height: 285px;
  padding: 22px;
}

.demo-panel {
  background: rgba(16, 28, 33, 0.72);
}

.result-panel {
  background: var(--surface-light);
  border-color: var(--line-bright);
  display: flex;
  flex-direction: column;
}

.panel-topline {
  border-bottom: 1px solid var(--line);
  padding-bottom: 15px;
}

.field-row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr 0.62fr;
}

.field-block {
  margin-top: 25px;
}

.field-block label {
  color: var(--muted);
  display: block;
  font: 700 9px "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

input,
select {
  appearance: none;
  background: #0b171b;
  border: 1px solid rgba(101, 230, 208, 0.27);
  border-radius: 2px;
  color: var(--ink);
  font: 600 15px "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  min-height: 48px;
  padding: 0 12px;
  width: 100%;
}

input:hover,
select:hover {
  border-color: var(--cyan);
}

select {
  background-image: linear-gradient(45deg, transparent 50%, var(--cyan) 50%), linear-gradient(135deg, var(--cyan) 50%, transparent 50%);
  background-position: calc(100% - 15px) 20px, calc(100% - 10px) 20px;
  background-repeat: no-repeat;
  background-size: 5px 5px, 5px 5px;
  padding-right: 28px;
}

.result-value {
  color: var(--cyan);
  font: 700 clamp(31px, 4.2vw, 52px) "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  letter-spacing: -0.1em;
  line-height: 1;
  margin: auto 0 9px;
  overflow-wrap: anywhere;
}

.result-equation {
  color: var(--muted);
  font: 12px "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  margin: 0;
}

.result-equation span {
  color: var(--orange);
  padding: 0 6px;
}

.result-bar {
  background: rgba(101, 230, 208, 0.14);
  height: 4px;
  margin: 28px 0 15px;
  width: 100%;
}

.result-bar span {
  background: var(--cyan);
  display: block;
  height: 100%;
  transition: width 180ms ease;
  width: 72%;
}

.result-note {
  color: var(--faint);
  font-size: 11px;
  margin: 0;
}

.compact-heading {
  display: grid;
  grid-template-columns: 0.9fr 1fr 1fr;
}

.feature-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
}

.feature-card {
  background: rgba(16, 28, 33, 0.7);
  border: 1px solid var(--line);
  min-height: 230px;
  padding: 24px;
}

.feature-card-accent {
  background: rgba(21, 37, 42, 0.9);
  border-color: var(--line-bright);
}

.feature-number {
  color: var(--orange);
  font-size: 12px;
}

.feature-card h3 {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 25px;
  letter-spacing: -0.05em;
  margin: 54px 0 12px;
}

.feature-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  margin: 0;
  max-width: 260px;
}

.privacy-section {
  align-items: center;
  display: grid;
  gap: 70px;
  grid-template-columns: 0.65fr 1fr;
}

.privacy-stamp {
  align-items: center;
  border: 1px solid var(--orange);
  border-radius: 50%;
  color: var(--orange);
  display: flex;
  flex-direction: column;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  height: 190px;
  justify-content: center;
  justify-self: center;
  transform: rotate(-8deg);
  width: 190px;
}

.privacy-stamp span {
  font-size: 12px;
  letter-spacing: 0.18em;
}

.privacy-stamp b {
  font-size: 25px;
  letter-spacing: -0.1em;
}

.privacy-stamp small {
  border-top: 1px solid rgba(255, 179, 92, 0.45);
  font-size: 8px;
  letter-spacing: 0.16em;
  margin-top: 8px;
  padding-top: 8px;
}

.privacy-copy h2 {
  margin-bottom: 20px;
}

.install-band {
  align-items: center;
  background: linear-gradient(100deg, rgba(101, 230, 208, 0.13), rgba(21, 37, 42, 0.45));
  border: 1px solid var(--line-bright);
  display: flex;
  gap: 30px;
  justify-content: space-between;
  margin: 0 0 80px;
  padding: 36px 40px;
}

.install-band .eyebrow {
  margin-bottom: 14px;
}

.install-band h2 {
  font-size: clamp(29px, 4vw, 46px);
  margin-bottom: 14px;
}

.install-band > div > p:last-child {
  max-width: 560px;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--faint);
  display: flex;
  font-size: 9px;
  gap: 24px;
  justify-content: space-between;
  padding: 24px 0 34px;
}

@media (max-width: 850px) {
  .hero {
    gap: 45px;
    grid-template-columns: 1fr;
    padding-bottom: 76px;
  }

  .hero-visual {
    justify-self: center;
    width: min(100%, 500px);
  }

  .section-heading,
  .compact-heading {
    align-items: start;
    gap: 18px;
    grid-template-columns: 1fr;
  }

  .section-heading h2 {
    max-width: 520px;
  }
}

@media (max-width: 620px) {
  .page-shell {
    padding: 0 18px;
  }

  .site-header {
    min-height: 74px;
  }

  .site-nav {
    display: none;
  }

  .header-link {
    padding-left: 0;
  }

  .hero {
    min-height: auto;
    padding: 68px 0 82px;
  }

  .hero h1 {
    font-size: 51px;
  }

  .hero-lede {
    font-size: 15px;
  }

  .hero-proof {
    gap: 10px 18px;
    margin-top: 43px;
  }

  .hero-visual {
    min-height: 390px;
    padding-left: 16px;
  }

  .signal-card {
    margin-left: 31px;
  }

  .visual-label-top {
    left: 17px;
  }

  .demo-layout,
  .feature-grid,
  .privacy-section {
    grid-template-columns: 1fr;
  }

  .field-row {
    grid-template-columns: 1fr 1fr;
  }

  .field-decimals {
    grid-column: span 2;
  }

  .section {
    padding: 76px 0;
  }

  .feature-card {
    min-height: 190px;
  }

  .feature-card h3 {
    margin-top: 33px;
  }

  .privacy-section {
    gap: 44px;
  }

  .privacy-stamp {
    height: 150px;
    justify-self: start;
    width: 150px;
  }

  .install-band {
    align-items: start;
    flex-direction: column;
    margin-bottom: 55px;
    padding: 26px 22px;
  }

  .site-footer {
    align-items: start;
    flex-direction: column;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}