:root {
  color-scheme: dark;
  --ink: #f5f3ed;
  --muted: #b3b5ad;
  --dim: #7e8279;
  --line: rgba(244, 241, 232, 0.16);
  --line-strong: rgba(244, 241, 232, 0.3);
  --paper: #08090c;
  --surface: #101216;
  --surface-raised: #15181d;
  --panel: rgba(244, 241, 232, 0.065);
  --panel-strong: rgba(244, 241, 232, 0.11);
  --acid: #b8ff5a;
  --acid-soft: rgba(184, 255, 90, 0.1);
  --ember: #ff765f;
  --gold: #f3c65f;
  --info: #80b9ee;
  --max-width: 1180px;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 18%, rgba(184, 255, 90, 0.045), transparent 28%),
    radial-gradient(circle at 82% 40%, rgba(128, 185, 238, 0.04), transparent 30%),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
}

body::before {
  background-image:
    linear-gradient(rgba(244, 241, 232, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 241, 232, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000 4%, rgba(0, 0, 0, 0.75) 70%, transparent 100%);
}

body::after {
  z-index: -1;
  opacity: 0.38;
  background-image:
    radial-gradient(circle at 5% 16%, var(--ink) 0 1px, transparent 1.5px),
    radial-gradient(circle at 14% 66%, var(--ink) 0 1px, transparent 1.5px),
    radial-gradient(circle at 28% 31%, var(--acid) 0 1px, transparent 1.5px),
    radial-gradient(circle at 41% 73%, var(--ink) 0 1px, transparent 1.5px),
    radial-gradient(circle at 62% 22%, var(--ink) 0 1px, transparent 1.5px),
    radial-gradient(circle at 73% 62%, var(--info) 0 1px, transparent 1.5px),
    radial-gradient(circle at 88% 15%, var(--ink) 0 1px, transparent 1.5px),
    radial-gradient(circle at 96% 77%, var(--ink) 0 1px, transparent 1.5px);
}

body,
button,
input,
select,
textarea {
  font-family: var(--sans);
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  border-radius: 0;
}

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

:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 3px;
}

::selection {
  background: var(--acid);
  color: #071006;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  transform: translateY(-150%);
  background: var(--acid);
  color: #071006;
  font-weight: 900;
  text-decoration: none;
}

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

.topbar {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 40;
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  padding: 14px max(24px, calc((100% - var(--max-width)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(7, 8, 12, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  border: 1px solid var(--line);
  background: rgba(7, 8, 12, 0.82);
  color: var(--acid);
  font: 900 11px/1 var(--mono);
}

.brand-lockup {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-lockup strong {
  font-size: 16px;
}

.brand-lockup small {
  color: var(--dim);
  font: 700 10px/1 var(--mono);
  text-transform: uppercase;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 5px;
  border: 1px solid var(--line);
  background: rgba(7, 8, 12, 0.88);
}

.topnav a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 0 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  text-decoration: none;
}

.topnav a:hover,
.topnav a[aria-current="page"] {
  background: var(--panel);
  color: var(--acid);
}

.menu-toggle {
  display: none;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font: 900 11px/1 var(--sans);
  cursor: pointer;
}

.site-shell {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

.eyebrow,
.panel-label,
.micro-label {
  color: var(--acid);
  font: 900 11px/1.4 var(--sans);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
}

.pulse {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 0 rgba(184, 255, 90, 0.62);
  animation: pulse 1.9s infinite;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font-size: 13px;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: rgba(184, 255, 90, 0.7);
  background: rgba(184, 255, 90, 0.11);
}

.button.primary {
  border-color: var(--acid);
  background: var(--acid);
  color: #071006;
}

.button.primary:hover {
  background: #c8ff8e;
}

.button.danger:hover {
  border-color: var(--ember);
  background: rgba(255, 118, 95, 0.1);
}

.button.small {
  min-height: 40px;
  gap: 14px;
  padding: 0 13px;
  font-size: 11px;
}

.hero {
  display: grid;
  min-height: 100svh;
  grid-template-columns: minmax(0, 1.08fr) minmax(370px, 0.92fr);
  align-items: center;
  gap: 54px;
  padding: 112px 0 64px;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(48px, 6.2vw, 78px);
  font-weight: 950;
  line-height: 0.93;
  letter-spacing: -0.045em;
}

.hero h1 span {
  display: block;
  color: #dfe3e8;
}

.hero-lede {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.privacy-note {
  max-width: 680px;
  margin: 14px 0 0;
  color: var(--dim);
  font: 700 10px/1.55 var(--mono);
}

.contract-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 24px;
  color: var(--dim);
  font: 700 10px/1.5 var(--mono);
}

.contract-strip b {
  color: var(--gold);
}

.system-readout {
  position: relative;
  min-width: 0;
  border: 1px solid var(--line-strong);
  background: rgba(13, 15, 19, 0.95);
  box-shadow: 12px 12px 0 rgba(128, 185, 238, 0.08);
}

.system-readout::after {
  position: absolute;
  inset: 9px -10px -10px 9px;
  z-index: -1;
  border: 1px solid rgba(128, 185, 238, 0.26);
  content: "";
}

.readout-head,
.readout-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 18px;
  color: var(--dim);
  font: 800 9px/1 var(--mono);
}

.readout-head {
  border-bottom: 1px solid var(--line);
}

.readout-foot {
  border-top: 1px solid var(--line);
}

.readout-head span:first-child {
  display: flex;
  align-items: center;
  gap: 8px;
}

.readout-head b,
.readout-foot b {
  color: var(--acid);
}

.run-chain {
  padding: 10px 18px;
}

.run-step {
  display: grid;
  min-height: 67px;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--dim);
}

.run-step:last-child {
  border-bottom: 0;
}

.run-step > span,
.run-step em,
.run-step small,
.run-step strong {
  font-family: var(--mono);
}

.run-step > span,
.run-step em {
  font-size: 9px;
  font-style: normal;
  font-weight: 800;
}

.run-step small,
.run-step strong {
  display: block;
}

.run-step small {
  margin-bottom: 5px;
  color: var(--dim);
  font-size: 8px;
  font-weight: 800;
}

.run-step strong {
  color: var(--ink);
  font-size: 13px;
  line-height: 1.35;
}

.run-step.is-active {
  background: var(--acid-soft);
}

.run-step.is-active > span,
.run-step.is-active em {
  color: var(--acid);
}

.run-step.is-ready > span,
.run-step.is-ready em {
  color: var(--gold);
}

.status-rail {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0 0 80px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.status-item {
  min-width: 0;
  padding: 18px 20px;
  border-right: 1px solid var(--line);
}

.status-item:last-child {
  border-right: 0;
}

.status-item small,
.status-item strong {
  display: block;
}

.status-item small {
  margin-bottom: 8px;
  color: var(--dim);
  font: 800 9px/1 var(--mono);
}

.status-item strong {
  font-size: 13px;
}

.status-item strong::before {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--acid);
  content: "";
  vertical-align: 1px;
}

.section-band {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.52fr);
  align-items: end;
  gap: 42px;
  margin-bottom: 42px;
}

.section-head h2 {
  max-width: 820px;
  margin: 10px 0 0;
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 950;
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}

.feature-card {
  min-height: 260px;
  padding: 28px;
  background: rgba(8, 9, 12, 0.97);
}

.feature-card .index {
  display: block;
  margin-bottom: 64px;
  color: var(--gold);
  font: 800 10px/1 var(--mono);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.feature-card a {
  display: inline-block;
  margin-top: 20px;
  color: var(--acid);
  font-size: 12px;
  font-weight: 900;
  text-decoration: none;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}

.process-step {
  min-height: 190px;
  padding: 20px 16px;
  background: rgba(8, 9, 12, 0.97);
}

.process-step b {
  display: block;
  margin-bottom: 54px;
  color: var(--acid);
  font: 900 11px/1 var(--mono);
}

.process-step strong {
  display: block;
  margin-bottom: 9px;
  font-size: 14px;
}

.process-step span {
  color: var(--dim);
  font-size: 12px;
  line-height: 1.5;
}

.cta-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px;
  padding: 42px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
}

.cta-panel h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1;
}

.cta-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.contact-section {
  padding-top: 72px;
}

.contact-head {
  align-items: start;
}

.contact-scope {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -8px 0 28px;
}

.contact-scope span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font: 800 10px/1 var(--mono);
  letter-spacing: 0.03em;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.contact-card {
  display: flex;
  min-width: 0;
  min-height: 238px;
  flex-direction: column;
  padding: 26px;
  background: rgba(8, 9, 12, 0.97);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.contact-card:hover {
  background: var(--acid-soft);
}

.contact-code {
  color: var(--gold);
  font: 800 10px/1 var(--mono);
}

.contact-name {
  margin-top: 48px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.contact-card strong {
  margin-top: 8px;
  overflow-wrap: anywhere;
  font: 800 17px/1.45 var(--mono);
}

.contact-note {
  margin-top: 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.contact-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: auto;
  padding-top: 24px;
  color: var(--acid);
  font-size: 12px;
  font-weight: 900;
}

.contact-action b {
  font-family: var(--mono);
}

.builder-contact-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin: 24px 0 54px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: rgba(8, 9, 12, 0.72);
}

.builder-contact-bar > div {
  display: flex;
  align-items: center;
  gap: 14px;
}

.builder-contact-bar strong {
  font-size: 13px;
}

.builder-contact-bar nav {
  display: flex;
  align-items: center;
  gap: 1px;
  background: var(--line);
}

.builder-contact-bar a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 12px;
  padding: 0 13px;
  background: var(--paper);
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  text-decoration: none;
}

.builder-contact-bar a:hover {
  background: var(--acid-soft);
  color: var(--acid);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font: 700 10px/1.5 var(--mono);
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(184, 255, 90, 0.58); }
  70% { box-shadow: 0 0 0 9px rgba(184, 255, 90, 0); }
  100% { box-shadow: 0 0 0 0 rgba(184, 255, 90, 0); }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 132px;
  }

  .hero-copy {
    max-width: 790px;
  }

  .system-readout {
    max-width: 680px;
  }

  .process-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .contact-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .topbar {
    min-height: 64px;
    padding: 12px 20px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
  }

  .topnav {
    position: absolute;
    top: 64px;
    right: 20px;
    left: 20px;
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    padding: 1px;
    background: var(--line);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.48);
  }

  .topnav.is-open {
    display: grid;
  }

  .topnav a {
    min-height: 48px;
    background: var(--paper);
  }

  .brand-lockup small {
    display: none;
  }

  .site-shell {
    width: min(100% - 28px, var(--max-width));
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .status-rail {
    grid-template-columns: 1fr 1fr;
  }

  .status-item:nth-child(2n) {
    border-right: 0;
  }

  .status-item {
    border-bottom: 1px solid var(--line);
  }

  .feature-grid,
  .process-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cta-panel {
    grid-template-columns: 1fr;
    padding: 30px 24px;
  }

  .builder-contact-bar,
  .builder-contact-bar > div {
    align-items: flex-start;
    flex-direction: column;
  }

  .builder-contact-bar nav {
    width: 100%;
  }

  .builder-contact-bar a {
    flex: 1;
    justify-content: space-between;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 43px;
  }

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

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .system-readout::after {
    display: none;
  }

  .status-rail,
  .feature-grid,
  .process-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-card:last-child {
    grid-column: auto;
  }

  .contact-card {
    min-height: 210px;
  }

  .builder-contact-bar nav {
    display: grid;
    grid-template-columns: 1fr;
  }

  .status-item,
  .status-item:nth-child(2n) {
    border-right: 0;
  }

  .feature-card .index,
  .process-step b {
    margin-bottom: 28px;
  }

  .site-footer {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}