:root {
  color-scheme: dark;
  --background: #08111f;
  --background-deep: #050b14;
  --surface: #101b2c;
  --surface-raised: #142238;
  --surface-muted: #0c1727;
  --text: #f3f7fb;
  --text-soft: #9fb0c5;
  --text-faint: #71839b;
  --border: #26374e;
  --border-bright: #3a4f6a;
  --green: #46e6a8;
  --green-dark: #07291e;
  --red: #ff6d78;
  --amber: #f2bd63;
  --blue: #72a8ff;
  --font-sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
  --shadow: 0 24px 80px rgb(0 0 0 / 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 50% -20%, rgb(32 93 84 / 0.2), transparent 45%),
    linear-gradient(180deg, var(--background) 0, var(--background-deep) 100%);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 4px;
}

code {
  font-family: var(--font-mono);
}

.shell {
  width: min(1160px, calc(100% - 40px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-150%);
  border-radius: 8px;
  background: var(--green);
  color: #03130e;
  font-weight: 600;
}

.skip-link:focus {
  transform: translateY(0);
}

.ambient {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}

.ambient-one {
  top: 140px;
  left: 0;
  width: min(480px, 42vw);
  height: 480px;
  background: rgb(35 128 106 / 0.13);
}

.ambient-two {
  top: 620px;
  right: 0;
  width: min(380px, 38vw);
  height: 380px;
  background: rgb(61 100 160 / 0.1);
}

.site-header {
  border-bottom: 1px solid rgb(58 79 106 / 0.45);
  background: rgb(8 17 31 / 0.78);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  min-height: 74px;
  align-items: center;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.brand svg {
  width: 28px;
  fill: none;
  stroke: var(--green);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  color: var(--text-soft);
  font-size: 14px;
}

.nav-links a,
.footer > a {
  transition: color 180ms ease;
}

.nav-links a:hover,
.footer > a:hover {
  color: var(--text);
}

.nav-cta {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--border-bright);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  transition: border-color 180ms ease, background 180ms ease;
}

.nav-cta:hover {
  border-color: var(--green);
  background: rgb(70 230 168 / 0.07);
}

.hero {
  display: grid;
  min-height: 690px;
  align-items: center;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 76px;
  padding-block: 96px 82px;
}

.hero > * {
  min-width: 0;
}

.eyebrow,
.section-kicker {
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px var(--green);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 640px;
  margin-block: 22px;
  font-size: clamp(45px, 5.7vw, 78px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.99;
}

h1 em {
  color: var(--green);
  font-style: normal;
}

.hero-lede {
  max-width: 600px;
  margin-bottom: 30px;
  color: var(--text-soft);
  font-size: 18px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 600;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

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

.button svg,
.demo-footer svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.button-primary {
  background: var(--green);
  color: #04150f;
}

.button-primary:hover {
  background: #6aefbd;
}

.button-secondary {
  border-color: var(--border-bright);
  background: rgb(16 27 44 / 0.6);
}

.button-secondary:hover {
  border-color: #617895;
}

.install-row {
  display: flex;
  width: 100%;
  max-width: 610px;
  align-items: center;
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-muted);
}

.install-row code {
  min-width: 0;
  flex: 1;
  padding: 12px 14px;
  color: var(--text-soft);
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-button {
  display: grid;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  place-items: center;
  border: 0;
  border-left: 1px solid var(--border);
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
}

.copy-button:hover,
.copy-button.copied {
  color: var(--green);
}

.copy-button svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.hero-visual {
  position: relative;
  border: 1px solid var(--border-bright);
  border-radius: 12px;
  background: linear-gradient(145deg, rgb(20 34 56 / 0.96), rgb(7 16 28 / 0.98));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-visual::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgb(255 255 255 / 0.018) 1px, transparent 1px);
  background-size: 100% 26px;
  content: "";
  pointer-events: none;
}

.visual-topline {
  position: relative;
  display: grid;
  min-height: 54px;
  align-items: center;
  grid-template-columns: 80px 1fr auto;
  gap: 10px;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 10px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #40536c;
}

.status-chip {
  padding: 4px 8px;
  border: 1px solid rgb(70 230 168 / 0.32);
  border-radius: 5px;
  background: rgb(70 230 168 / 0.08);
  color: var(--green);
  font-weight: 600;
}

.trace-rail {
  position: relative;
  padding: 28px 26px 24px;
}

.trace-node {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: start;
  grid-template-columns: 34px 1fr auto;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: rgb(8 17 31 / 0.86);
}

.trace-node small {
  display: block;
  margin-bottom: 5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}

.trace-node strong {
  font-family: var(--font-mono);
  font-size: 12px;
}

.trace-node p {
  margin: 6px 0 0;
  color: var(--text-soft);
  font-size: 12px;
  line-height: 1.5;
}

.trace-index {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border: 1px solid var(--border-bright);
  border-radius: 6px;
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 10px;
}

.cu {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 9px;
}

.trace-line {
  width: 1px;
  height: 20px;
  margin-left: 30px;
  background: var(--border-bright);
}

.root-node {
  border-color: rgb(70 230 168 / 0.55);
  box-shadow: inset 3px 0 0 var(--green);
}

.root-node .trace-index {
  border-color: rgb(70 230 168 / 0.5);
  color: var(--green);
}

.failure-mark {
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 22px;
}

.rollback-line {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  padding: 13px 15px;
  border: 1px dashed var(--border-bright);
  border-radius: 7px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 9px;
}

.rollback-line b {
  color: var(--text);
  font-weight: 500;
}

.return-arrow {
  margin-left: auto;
  color: var(--green);
}

.deterministic-note {
  position: relative;
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 9px;
  padding-inline: 26px;
  border-top: 1px solid var(--border);
  background: rgb(70 230 168 / 0.04);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 10px;
}

.deterministic-note svg {
  width: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block: 1px solid var(--border);
}

.metrics div {
  display: flex;
  min-height: 110px;
  align-items: center;
  gap: 13px;
  padding: 20px 26px;
  border-right: 1px solid var(--border);
}

.metrics div:last-child {
  border-right: 0;
}

.metrics strong {
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 500;
}

.metrics span {
  color: var(--text-soft);
  font-size: 13px;
}

.demo-section,
.protocol {
  padding-block: 128px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 50px;
  margin-bottom: 40px;
}

.section-heading h2,
.boundary h2 {
  max-width: 690px;
  margin: 10px 0 0;
  font-size: clamp(34px, 4.5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.section-heading > p {
  max-width: 400px;
  margin-bottom: 4px;
  color: var(--text-soft);
}

.demo-card {
  border: 1px solid var(--border-bright);
  border-radius: 12px;
  background: var(--surface-muted);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.profile-tabs {
  display: flex;
  gap: 4px;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  background: #0a1423;
}

.profile-tabs button {
  min-width: 92px;
  min-height: 44px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

.profile-tabs button:hover {
  color: var(--text);
}

.profile-tabs button[aria-selected="true"] {
  background: var(--surface-raised);
  color: var(--green);
  box-shadow: inset 0 0 0 1px var(--border-bright);
}

.panels {
  min-height: 355px;
}

.profile-panel {
  padding: 40px;
}

.profile-panel[hidden] {
  display: none;
}

.panel-label {
  margin-bottom: 24px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.cause-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 14px;
}

.cause-grid > div,
.expectation > div {
  padding: 15px 17px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgb(20 34 56 / 0.66);
}

.cause-grid span,
.expectation span {
  display: block;
  margin-bottom: 5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
}

.cause-grid strong {
  font-family: var(--font-mono);
  font-size: 13px;
}

.cause-copy {
  max-width: 830px;
  margin: 24px 0;
  color: var(--text-soft);
  font-size: 17px;
}

.cause-copy code {
  color: var(--green);
}

.expectation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.expectation code {
  color: var(--text);
  font-size: 12px;
}

.account-change {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(160px, 1fr) auto 24px auto 24px auto;
  gap: 10px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.account-change div {
  display: flex;
  flex-direction: column;
}

.account-change span,
.panel-note {
  color: var(--text-faint);
  font-size: 12px;
}

.account-change code {
  min-width: 70px;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-align: center;
}

.account-change code.tentative {
  border-color: rgb(70 230 168 / 0.35);
  color: var(--green);
}

.account-change i {
  color: var(--text-faint);
  font-style: normal;
  text-align: center;
}

.panel-note {
  margin-top: 20px;
}

.cpi-list {
  max-width: 760px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cpi-list li {
  position: relative;
  display: flex;
  gap: 18px;
  padding-bottom: 32px;
}

.cpi-list li:not(:last-child)::after {
  position: absolute;
  top: 35px;
  bottom: 4px;
  left: 16px;
  width: 1px;
  background: var(--border-bright);
  content: "";
}

.cpi-list li > span {
  display: grid;
  width: 33px;
  height: 33px;
  flex: 0 0 33px;
  place-items: center;
  border: 1px solid rgb(70 230 168 / 0.45);
  border-radius: 6px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 10px;
}

.cpi-list strong {
  font-family: var(--font-mono);
  font-size: 13px;
}

.cpi-list p {
  margin: 4px 0 0;
  color: var(--text-soft);
  font-size: 13px;
}

.compute-total {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.compute-total strong {
  font-family: var(--font-mono);
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 500;
  letter-spacing: -0.06em;
}

.compute-total span {
  color: var(--text-faint);
}

.meter {
  height: 10px;
  margin-block: 24px 16px;
  border-radius: 10px;
  background: var(--surface-raised);
  overflow: hidden;
}

.meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
  box-shadow: 0 0 18px rgb(70 230 168 / 0.5);
}

.compute-legend {
  display: flex;
  gap: 24px;
  color: var(--text-soft);
  font-size: 12px;
}

.compute-legend span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.compute-legend i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border-bright);
}

.compute-legend i.green {
  background: var(--green);
}

.demo-footer {
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 22px;
  border-top: 1px solid var(--border);
  background: #091321;
}

.demo-footer code {
  color: var(--text-faint);
  font-size: 11px;
}

.demo-footer code span {
  color: var(--green);
}

.demo-footer a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 5px;
  color: var(--text-soft);
  font-size: 12px;
}

.demo-footer a:hover {
  color: var(--green);
}

.protocol {
  border-top: 1px solid var(--border);
}

.flow {
  display: grid;
  align-items: center;
  grid-template-columns: 1fr 60px 1fr 60px 1fr;
  gap: 18px;
}

.flow article {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: linear-gradient(145deg, rgb(20 34 56 / 0.72), rgb(9 19 33 / 0.72));
}

.flow-number {
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 10px;
}

.flow h3 {
  margin: 25px 0 10px;
  font-size: 24px;
  font-weight: 500;
}

.flow code {
  color: var(--blue);
  font-size: 11px;
}

.flow p {
  margin: 16px 0 0;
  color: var(--text-soft);
  font-size: 14px;
}

.flow-arrow {
  width: 60px;
  fill: none;
  stroke: var(--border-bright);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1;
}

.schema-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.schema-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 15px;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 10px;
}

.schema-links a:hover {
  border-color: var(--green);
  color: var(--green);
}

.boundary {
  display: grid;
  grid-template-columns: 1fr 0.75fr;
  gap: 80px;
  margin-bottom: 120px;
  padding: 56px;
  border: 1px solid rgb(242 189 99 / 0.35);
  border-radius: 12px;
  background: linear-gradient(135deg, rgb(242 189 99 / 0.08), transparent 55%);
}

.boundary .section-kicker {
  color: var(--amber);
}

.boundary h2 {
  font-size: clamp(32px, 4vw, 48px);
}

.boundary > p {
  align-self: center;
  margin: 0;
  color: var(--text-soft);
}

.footer {
  display: flex;
  min-height: 100px;
  align-items: center;
  gap: 30px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 12px;
}

.footer p {
  margin: 0 0 0 auto;
}

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

@media (max-width: 920px) {
  .nav-links {
    display: none;
  }

  .nav-cta {
    margin-left: auto;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 54px;
    padding-block: 80px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics div:nth-child(2) {
    border-right: 0;
  }

  .metrics div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border);
  }

  .section-heading,
  .boundary {
    align-items: start;
    grid-template-columns: 1fr;
  }

  .section-heading {
    flex-direction: column;
  }

  .flow {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    height: 38px;
    margin: -9px auto;
    transform: rotate(90deg);
  }

  .boundary {
    gap: 28px;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(100% - 28px, 1160px);
  }

  .nav {
    min-height: 66px;
  }

  .nav-cta {
    min-height: 40px;
    padding-inline: 12px;
    font-size: 10px;
  }

  .hero {
    min-height: auto;
    padding-block: 64px;
  }

  h1 {
    font-size: 48px;
  }

  .hero-lede {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }

  .visual-topline {
    grid-template-columns: 50px 1fr auto;
    padding-inline: 12px;
  }

  .visual-topline > span:nth-child(2) {
    max-width: 145px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .trace-rail {
    padding: 18px 14px;
  }

  .trace-node {
    grid-template-columns: 31px 1fr;
  }

  .trace-node > :last-child {
    display: none;
  }

  .rollback-line {
    flex-wrap: wrap;
  }

  .return-arrow {
    margin-left: 0;
  }

  .metrics div {
    min-height: 92px;
    flex-direction: column;
    align-items: start;
    justify-content: center;
    gap: 0;
    padding: 16px;
  }

  .demo-section,
  .protocol {
    padding-block: 86px;
  }

  .profile-tabs {
    overflow-x: auto;
  }

  .profile-tabs button {
    min-width: 86px;
  }

  .profile-panel {
    padding: 26px 20px;
  }

  .cause-grid,
  .expectation {
    grid-template-columns: 1fr;
  }

  .account-change {
    grid-template-columns: 1fr auto 16px auto 16px auto;
    gap: 5px;
  }

  .account-change code {
    min-width: 48px;
    padding-inline: 5px;
    font-size: 10px;
  }

  .demo-footer {
    align-items: start;
    flex-direction: column;
  }

  .boundary {
    margin-bottom: 80px;
    padding: 30px 24px;
  }

  .footer {
    flex-wrap: wrap;
    padding-block: 28px;
  }

  .footer p {
    width: 100%;
    margin: 0;
    order: 3;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}