/* Hallmark · macrostructure: Split Studio · tone: utilitarian-technical
 * theme: studied-DNA (source: http://100.102.32.24:4176/)
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-md));
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
  background-color: var(--color-paper);
  background-image:
    linear-gradient(to right, var(--color-rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-rule) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
}

::selection {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

h1,
h2,
h3 {
  font-style: normal;
  font-family: var(--font-display);
  overflow-wrap: anywhere;
  min-width: 0;
}

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

.shell {
  width: var(--shell);
  max-width: 100%;
  margin-inline: auto;
  min-width: 0;
}

/* Header — N9 edge-aligned */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  border-bottom: var(--rule) solid var(--color-rule);
  background: color-mix(in oklch, var(--color-paper) 92%, transparent);
  backdrop-filter: blur(14px);
}

.nav {
  height: var(--header-h);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-sm);
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1;
  white-space: nowrap;
  min-width: 0;
}

.brand-mark {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--color-accent);
  flex: 0 0 auto;
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-lg);
  font-size: var(--text-sm);
  font-weight: 530;
  color: var(--color-muted-strong);
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  color: var(--color-ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  display: grid;
  place-items: center;
  border: var(--rule) solid var(--color-rule-strong);
  border-radius: var(--radius);
  background: var(--color-paper-3);
  color: var(--color-ink);
  cursor: pointer;
  transition:
    background var(--dur-micro) var(--ease-out),
    color var(--dur-micro) var(--ease-out),
    transform var(--dur-micro) var(--ease-out);
}

.icon-btn.is-round {
  border-radius: var(--radius-pill);
}

.icon-btn:hover,
.icon-btn.is-hover {
  background: var(--color-cta);
  color: var(--color-paper);
}

.icon-btn:active,
.icon-btn.is-active {
  transform: translateY(1px);
}

.icon-btn[disabled],
.icon-btn.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .icon-moon { display: none; }
  :root:not([data-theme]) .icon-sun { display: block; }
}

/* Hero — split */
.hero {
  position: relative;
  display: grid;
  gap: var(--space-xl);
  padding-block: var(--space-2xl) var(--space-xl);
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.kicker {
  margin: 0 0 var(--space-lg);
  color: var(--color-accent);
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  letter-spacing: 0.01em;
  line-height: 1.4;
  overflow-wrap: anywhere;
  max-width: 100%;
}

.hero h1 {
  margin: 0;
  font-size: var(--text-display);
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 0.96;
  text-wrap: pretty;
}

.lede {
  max-width: 36rem;
  margin: var(--space-lg) 0 0;
  color: var(--color-muted);
  font-size: var(--text-lg);
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.hero-actions .btn,
.hero-actions .magnetic-target {
  width: 100%;
}

.hero-actions .btn {
  justify-content: space-between;
}

.btn {
  min-height: 3rem;
  padding: 0 0 0 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs);
  border: var(--rule) solid var(--color-rule-strong);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 620;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  appearance: none;
  transition:
    background var(--dur-short) var(--ease-out),
    color var(--dur-short) var(--ease-out),
    border-color var(--dur-short) var(--ease-out),
    transform var(--dur-micro) var(--ease-out);
}

.btn-label {
  padding-right: var(--space-xs);
}

.btn::after {
  content: "\2192";
  width: 2.25rem;
  height: 2.25rem;
  margin: 0.25rem 0.25rem 0.25rem auto;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: color-mix(in oklch, var(--color-ink) 16%, transparent);
  font-size: 0.95rem;
  line-height: 1;
}

.btn-primary {
  border-color: var(--color-cta);
  background: var(--color-cta);
  color: var(--color-paper);
}

.btn-primary:hover,
.btn-primary.is-hover {
  background: var(--color-cta-hover);
  transform: translateY(-1.5px);
}

.btn-secondary {
  background: color-mix(in oklch, var(--color-paper) 70%, transparent);
  color: var(--color-ink);
}

.btn-secondary:hover,
.btn-secondary.is-hover {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}

.btn:active,
.btn.is-active {
  transform: translateY(1px);
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn.is-success {
  border-color: var(--color-ink);
}

.btn.is-error {
  border-color: var(--color-accent);
}

.hero-visual {
  min-width: 0;
  position: relative;
}

.shot {
  margin: 0;
  border: var(--rule) solid var(--color-rule);
  background: var(--color-paper-3);
  box-shadow: 0 24px 52px var(--color-shadow);
  overflow: hidden;
}

.shot img {
  width: 100%;
}

.shot-dark { display: none; }
:root[data-theme="dark"] .shot-light { display: none; }
:root[data-theme="dark"] .shot-dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .shot-light { display: none; }
  :root:not([data-theme]) .shot-dark { display: block; }
}

.signal {
  display: none;
  position: absolute;
  left: 0;
  bottom: var(--space-md);
  width: min(42%, 18rem);
  height: 7.5rem;
  pointer-events: none;
  color: var(--color-accent);
  opacity: 0.85;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--rule) solid var(--color-rule-strong);
  border-bottom: var(--rule) solid var(--color-rule-strong);
}

.stat {
  padding: var(--space-lg) var(--space-md);
  border-right: var(--rule) solid var(--color-rule);
  min-width: 0;
}

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

.stat-value {
  font-family: var(--font-outlier);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 620;
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat-label {
  margin-top: var(--space-xs);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

/* Split panels */
.panel {
  display: grid;
  gap: var(--space-lg);
  padding-block: var(--space-3xl);
  border-bottom: var(--rule) solid var(--color-rule);
}

.panel-copy h2 {
  margin: 0;
  font-size: var(--text-4xl);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.panel-copy p {
  max-width: 36rem;
  margin: var(--space-md) 0 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.panel-copy {
  min-width: 0;
}

.panel-visual {
  min-width: 0;
}

/* Spec table */
.specs {
  padding-block: var(--space-3xl);
}

.specs h2 {
  margin: 0 0 var(--space-xl);
  font-size: var(--text-4xl);
  font-weight: 650;
  letter-spacing: -0.03em;
}

.spec-row {
  display: grid;
  gap: var(--space-2xs) var(--space-lg);
  padding-block: var(--space-md);
  border-top: var(--rule) solid var(--color-rule);
}

.spec-row:last-child {
  border-bottom: var(--rule) solid var(--color-rule);
}

.spec-k {
  font-weight: 620;
}

.spec-v {
  color: var(--color-muted);
  line-height: 1.6;
}

/* Install */
.install {
  padding-block: var(--space-3xl);
  border-bottom: var(--rule) solid var(--color-rule);
}

.install h2 {
  margin: 0 0 var(--space-md);
  font-size: var(--text-4xl);
  font-weight: 650;
  letter-spacing: -0.03em;
}

.install-note {
  margin: 0 0 var(--space-lg);
  color: var(--color-muted);
  max-width: 40rem;
}

pre {
  margin: 0;
  padding: var(--space-lg);
  overflow-x: auto;
  border: var(--rule) solid var(--color-rule-strong);
  background: var(--color-paper-3);
  font-family: var(--font-outlier);
  font-size: 0.82rem;
  line-height: 1.7;
}

.install-bar {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-sm);
}

/* Note */
.note {
  padding-block: var(--space-2xl);
  color: var(--color-muted);
  max-width: 52rem;
  line-height: 1.7;
}

.note strong {
  color: var(--color-ink);
  font-weight: 620;
}

/* Footer Ft2 */
.site-footer {
  border-top: var(--rule) solid var(--color-rule-strong);
  padding-block: var(--space-xl);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 4rem;
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
}

.footer-links a:hover {
  color: var(--color-ink);
}

@media (min-width: 40rem) {
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    grid-template-columns: none;
  }

  .hero-actions .btn,
  .hero-actions .magnetic-target {
    width: auto;
  }

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

  .stat {
    border-right: var(--rule) solid var(--color-rule);
  }

  .stat:last-child {
    border-right: 0;
  }

  .spec-row {
    grid-template-columns: 9rem minmax(0, 1fr);
    align-items: baseline;
  }

  .brand {
    font-size: 1.2rem;
  }

  .icon-btn {
    width: 2.5rem;
    height: 2.5rem;
  }
}

@media (min-width: 60rem) {
  .nav {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .nav-links {
    display: flex;
    justify-content: center;
  }

  .hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    min-height: calc(88dvh - var(--header-h));
    padding-block: var(--space-3xl) var(--space-2xl);
    column-gap: var(--space-xl);
  }

  .signal {
    display: block;
  }

  .panel {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    column-gap: var(--space-2xl);
  }

  .panel.is-flip {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .panel.is-flip .panel-copy {
    order: 2;
  }
}

/* Kinetic layer from ljj.world */
.global-pixel-trail,
.click-spark-canvas {
  position: fixed;
  pointer-events: none;
}

.global-pixel-trail {
  z-index: 0;
  inset: var(--header-h) 0 0;
  width: 100%;
  height: calc(100dvh - var(--header-h));
  contain: strict;
}

.click-spark-canvas {
  z-index: 120;
  inset: 0;
  width: 100%;
  height: 100%;
}

.global-flowing-lights {
  position: fixed;
  z-index: 52;
  inset: var(--header-h) 0 0;
  overflow: hidden;
  pointer-events: none;
  contain: strict;
}

.global-flow-light-rail {
  position: absolute;
  display: block;
  overflow: hidden;
  opacity: 0.68;
}

.global-flow-light-rail::before {
  content: "";
  position: absolute;
  background: color-mix(in oklch, var(--color-accent) 13%, transparent);
}

.global-flow-light-rail.is-horizontal {
  width: clamp(260px, 29vw, 560px);
  height: 7px;
}

.global-flow-light-rail.is-horizontal::before {
  top: 3px;
  right: 0;
  left: 0;
  height: 1px;
}

.global-flow-light-rail.is-vertical {
  width: 7px;
  height: clamp(190px, 28vh, 340px);
}

.global-flow-light-rail.is-vertical::before {
  top: 0;
  bottom: 0;
  left: 3px;
  width: 1px;
}

.global-flow-light-rail.is-top { top: 10%; right: -3%; }
.global-flow-light-rail.is-bottom { bottom: 9%; left: -2%; }
.global-flow-light-rail.is-left { bottom: 17%; left: 3.2%; }
.global-flow-light-rail.is-right { top: 23%; right: 3.2%; }

.global-flow-light-runner {
  position: absolute;
  display: block;
  opacity: 0;
  filter: drop-shadow(0 0 5px color-mix(in oklch, var(--color-accent) 42%, transparent));
  will-change: transform, opacity;
}

.global-flow-light-rail.is-horizontal .global-flow-light-runner {
  top: 3px;
  left: 0;
  width: clamp(90px, 9vw, 170px);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    color-mix(in oklch, var(--color-accent) 48%, transparent) 22%,
    var(--color-accent) 52%,
    color-mix(in oklch, var(--color-accent) 48%, transparent) 78%,
    transparent
  );
  animation: global-flow-light-x 4.8s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

.global-flow-light-rail.is-vertical .global-flow-light-runner {
  top: 0;
  left: 3px;
  width: 1px;
  height: clamp(72px, 9vh, 110px);
  background: linear-gradient(
    180deg,
    transparent,
    color-mix(in oklch, var(--color-accent) 48%, transparent) 22%,
    var(--color-accent) 52%,
    color-mix(in oklch, var(--color-accent) 48%, transparent) 78%,
    transparent
  );
  animation: global-flow-light-y 5.4s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

.global-flow-light-rail.is-bottom .global-flow-light-runner {
  animation-direction: reverse;
  animation-delay: -1.9s;
}

.global-flow-light-rail.is-left .global-flow-light-runner {
  animation-direction: reverse;
  animation-delay: -3.1s;
}

.global-flow-light-rail.is-right .global-flow-light-runner {
  animation-delay: -1.2s;
}

@keyframes global-flow-light-x {
  0% { opacity: 0; transform: translate3d(-110%, 0, 0) scaleX(0.72); }
  14%, 82% { opacity: 0.86; }
  100% { opacity: 0; transform: translate3d(620%, 0, 0) scaleX(1.08); }
}

@keyframes global-flow-light-y {
  0% { opacity: 0; transform: translate3d(0, -110%, 0) scaleY(0.72); }
  14%, 82% { opacity: 0.82; }
  100% { opacity: 0; transform: translate3d(0, 520%, 0) scaleY(1.08); }
}

:root[data-theme="dark"] .global-pixel-trail { opacity: 0.64; }
:root[data-theme="dark"] .global-flow-light-rail { opacity: 0.78; }

.magnetic-target {
  display: block;
  will-change: transform;
}

.hero-copy > * {
  animation: hero-rise 720ms var(--ease-out) both;
}

.hero-copy > :nth-child(1) { animation-delay: 40ms; }
.hero-copy > :nth-child(2) { animation-delay: 120ms; }
.hero-copy > :nth-child(3) { animation-delay: 200ms; }
.hero-copy > :nth-child(4) { animation-delay: 280ms; }

.hero-visual {
  animation: hero-rise 900ms var(--ease-out) 180ms both;
}

@keyframes hero-rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 760px) {
  .global-flowing-lights { display: none; }
}

@media (max-width: 900px), (hover: none), (pointer: coarse) {
  .global-pixel-trail { display: none; }
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header { z-index: 40; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .global-pixel-trail,
  .click-spark-canvas,
  .global-flowing-lights {
    display: none;
  }
}