:root {
  color-scheme: dark;
  --bg: #101317;
  --panel: rgba(22, 26, 31, 0.72);
  --panel-strong: rgba(25, 30, 36, 0.92);
  --text: #f6f1e8;
  --muted: #a9b2b0;
  --line: rgba(246, 241, 232, 0.16);
  --green: #5ef0a3;
  --amber: #ffc857;
  --blue: #61a5ff;
  --red: #ff6b6b;
  --max: 1000px;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(94, 240, 163, 0.11), transparent 26rem),
    radial-gradient(circle at 84% 16%, rgba(255, 200, 87, 0.1), transparent 22rem),
    linear-gradient(135deg, #101317 0%, #17171d 52%, #101317 100%);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(246, 241, 232, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 241, 232, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

a {
  color: inherit;
}

#mindfield {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.72;
}

.site-header,
main,
.site-footer {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
  border-bottom: 1px solid var(--line);
  background: rgba(16, 19, 23, 0.78);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.brand-cursor {
  color: var(--green);
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.nav a span {
  color: var(--green);
  font-size: 0.68rem;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--text);
  outline: none;
}

/* ---------- hero ---------- */

.hero {
  padding: 110px 0 90px;
}

.portal-hero {
  padding-bottom: 64px;
}

.terminal-line {
  margin: 0 0 22px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.prompt {
  color: var(--green);
}

.ok {
  color: var(--amber);
}

.caret {
  display: inline-block;
  width: 9px;
  height: 1.05em;
  margin-left: 6px;
  background: var(--green);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 9vw, 6.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero-text {
  max-width: 560px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.8vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.button:focus-visible {
  outline: none;
}

.primary {
  border-color: var(--green);
  background: transparent;
  color: var(--green);
}

.primary:hover,
.primary:focus-visible {
  background: var(--green);
  color: #0d1712;
}

.secondary {
  color: var(--muted);
}

.secondary:hover,
.secondary:focus-visible {
  border-color: var(--text);
  color: var(--text);
}

.hero-readout {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 72px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
}

.portal-readout {
  grid-template-columns: repeat(3, 1fr);
}

.hero-readout > div {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border-right: 1px solid var(--line);
}

.hero-readout > div:last-child {
  border-right: 0;
}

.hero-readout dt {
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-readout dd {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 0.92rem;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px var(--green);
}

/* ---------- sections ---------- */

.section {
  padding: 84px 0;
  border-top: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 46px;
}

.section-index {
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.85rem;
}

h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.section-rule {
  flex: 1;
  height: 1px;
  align-self: center;
  background: var(--line);
}

h3 {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 700;
}

/* ---------- about ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 1fr);
  gap: 48px;
  align-items: start;
}

.statement {
  margin: 0;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 500;
  line-height: 1.45;
}

.principles {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: principle;
}

.principles li {
  position: relative;
  padding: 16px 0 16px 52px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  counter-increment: principle;
  font-size: 0.95rem;
}

.principles li:first-child {
  border-top: 1px solid var(--line);
}

.principles li::before {
  position: absolute;
  left: 0;
  color: var(--amber);
  content: "0" counter(principle);
  font-family: var(--mono);
  font-size: 0.8rem;
}

/* ---------- systems ---------- */

.system-list {
  border-top: 1px solid var(--line);
}

.system-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  transition: background 160ms ease;
}

.system-row:hover {
  background: rgba(246, 241, 232, 0.03);
}

.system-id {
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding-top: 4px;
}

.system-name {
  display: grid;
  align-content: start;
  gap: 10px;
  justify-items: start;
}

.system-tag {
  padding: 3px 9px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.system-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* ---------- method ---------- */

.method-lede {
  max-width: 520px;
  margin: 0 0 36px;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 500;
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--line);
  counter-reset: step;
  list-style: none;
}

.method-steps li {
  position: relative;
  min-height: 118px;
  padding: 44px 18px 16px;
  background: var(--panel-strong);
  counter-increment: step;
  font-size: 0.95rem;
  font-weight: 500;
}

.method-steps li::before {
  position: absolute;
  top: 14px;
  left: 18px;
  color: var(--green);
  content: "step_0" counter(step);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

/* ---------- contact ---------- */

.contact-block {
  display: grid;
  justify-items: start;
  gap: 20px;
  padding: 40px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
}

.contact-block .terminal-line {
  margin: 0;
}

.contact-copy {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
}

/* ---------- portal ---------- */

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

.portal-tile {
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 230px;
  padding: 24px;
  background: var(--panel-strong);
}

.portal-tile p {
  margin: 0;
  color: var(--muted);
}

/* ---------- footer ---------- */

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .hero {
    padding: 72px 0 64px;
  }

  .hero-readout {
    grid-template-columns: 1fr 1fr;
  }

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

  .hero-readout > div:nth-child(2n) {
    border-right: 0;
  }

  .hero-readout > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .system-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }

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

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

  .method-steps li {
    min-height: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
    padding: 14px 0;
  }

  .nav {
    flex-wrap: wrap;
    gap: 16px;
    width: 100%;
    margin-top: 12px;
  }

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

  .hero-readout {
    grid-template-columns: 1fr;
  }

  .hero-readout > div {
    border-right: 0;
  }

  .hero-readout > div:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .hero-readout > div:last-child {
    border-bottom: 0;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .contact-block {
    padding: 24px;
  }

  .contact-block .button {
    width: auto;
    max-width: 100%;
  }

  .site-footer {
    flex-direction: column;
    gap: 6px;
  }
}