/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5
 * macrostructure: Split Studio · H2 ratio=6/6, proof=Memory Relay, divider=negative space
 * theme: custom · vibe: "technical continuity, warm evidence atlas" · paper: oklch(95.6% 0.025 260) · accent: oklch(49% 0.191 265)
 * display: Literata · body: Atkinson Hyperlegible Next · axes: light / roman-serif / cool
 * enrichment: E5 Tier-B inline SVG · nav: N1b no-dropdown · footer: Ft2 spaced · context: user-approved
 * contrast: pass (40–41) · slop: pass (42–45) · honest: pass (46) · chrome: pass (47)
 * tokens: pass (48) · responsive: pass (49) · icons: pass (30) · mobile: pass (34, 49, 50–57)
 */

:root {
  --paper: oklch(95.6% 0.025 260);
  --paper-raised: oklch(98.5% 0.011 260);
  --ink: oklch(22% 0.063 262);
  --ink-soft: oklch(42% 0.055 262);
  --blue: oklch(49% 0.191 265);
  --blue-deep: oklch(39% 0.16 265);
  --ember: oklch(70% 0.19 35);
  --mist: oklch(82% 0.055 265);
  --mist-soft: oklch(89% 0.034 265);
  --accent-ink: oklch(99.5% 0.005 260);
  --white: oklch(99.5% 0.005 260);
  --line: color-mix(in oklch, var(--ink) 16%, transparent);
  --line-dark: color-mix(in oklch, var(--white) 22%, transparent);
  --shadow: 0 18px 60px color-mix(in oklch, var(--ink) 13%, transparent);
  --space-3xs: 4px;
  --space-2xs: 8px;
  --space-xs: 12px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 80px;
  --space-4xl: 96px;
  --space-5xl: 128px;
  --font-display: "Literata", Georgia, serif;
  --font-body: "Atkinson Hyperlegible Next", "Atkinson Hyperlegible", Arial, sans-serif;
  --font-mono: "Commit Mono", "SFMono-Regular", Consolas, monospace;
  --page: min(1180px, calc(100% - 48px));
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  color-scheme: light;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-color: var(--ember);
}

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

button,
.button,
.nav-link,
.language-link,
summary {
  min-height: 44px;
  white-space: nowrap;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

:focus-visible {
  outline: 3px solid var(--ember);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 8px 16px;
  transform: translateY(-180%);
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--white);
}

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

.shell {
  width: var(--page);
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
}

.nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 76px;
  gap: 32px;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  min-height: 44px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.wordmark small {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.nav-link,
.language-link {
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.nav-link:hover,
.language-link:hover {
  color: var(--ink);
}

.nav-link:active,
.language-link:active,
.mobile-nav a:active {
  color: var(--blue);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--blue);
  color: var(--accent-ink);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease;
}

.button:hover {
  background: var(--blue-deep);
  text-decoration: none;
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(1px);
}

.button--secondary {
  border-color: var(--line);
  background: transparent;
  color: var(--ink);
}

.button--secondary:hover {
  border-color: var(--ink);
  background: var(--paper-raised);
}

.button--small {
  min-height: 42px;
  padding-inline: 16px;
}

.mobile-nav {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(440px, 0.92fr);
  align-items: center;
  gap: clamp(44px, 7vw, 104px);
  min-height: 720px;
  padding-block: 64px 88px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 30px;
  height: 2px;
  background: var(--ember);
  content: "";
}

h1,
h2,
h3 {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  line-height: 1.08;
  text-wrap: balance;
}

h1 {
  max-width: 700px;
  font-size: clamp(52px, 6.7vw, 86px);
  font-weight: 300;
  letter-spacing: -0.055em;
}

h2 {
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 300;
  letter-spacing: -0.045em;
}

h3 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.hero__lede {
  max-width: 650px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.relay {
  position: relative;
  aspect-ratio: 1 / 1.02;
  max-width: 560px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in oklch, var(--paper-raised) 78%, transparent);
  box-shadow: var(--shadow);
}

.relay::after {
  position: absolute;
  inset: 16px;
  border: 1px dashed var(--mist);
  border-radius: calc(var(--radius-lg) - 8px);
  pointer-events: none;
  content: "";
}

.relay svg {
  display: block;
  width: 100%;
  height: 100%;
}

.relay__line {
  fill: none;
  stroke: var(--mist);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 360;
  stroke-dashoffset: 360;
  animation: relay-line 1100ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.relay__line--2 {
  animation-delay: 360ms;
}

.relay__orbit {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 4 8;
}

.relay__node {
  fill: var(--paper-raised);
  stroke: var(--mist);
  stroke-width: 2;
}

.relay__node--wiki {
  fill: var(--blue);
  stroke: var(--blue);
}

.relay__dot {
  fill: var(--ember);
}

.relay__tag {
  fill: var(--paper-raised);
  stroke: var(--line);
}

.relay__label {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-anchor: middle;
}

.relay__label--inverse {
  fill: var(--accent-ink);
}

.relay__micro {
  fill: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-anchor: middle;
  text-transform: uppercase;
}

@keyframes relay-line {
  to {
    stroke-dashoffset: 0;
  }
}

.trust {
  padding-block: 0 84px;
}

.trust h2,
.resources h2 {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.trust__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  border-block: 1px solid var(--line);
  list-style: none;
}

.trust__list li {
  min-width: 0;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.trust__list li:last-child {
  border-right: 0;
}

.trust__list strong,
.trust__list span {
  display: block;
}

.trust__list strong {
  font-size: 15px;
}

.trust__list span {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.4;
}

.section {
  padding-block: 116px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.65fr);
  align-items: end;
  gap: 80px;
  margin-bottom: 72px;
}

.section-heading p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 19px;
}

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

.step {
  padding: 32px 32px 0 0;
  border-right: 1px solid var(--line);
}

.step + .step {
  padding-left: 32px;
}

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

.step__number {
  display: block;
  margin-bottom: 52px;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.step p {
  margin: 16px 0 0;
  color: var(--ink-soft);
}

.capabilities {
  background: var(--ink);
  color: var(--white);
}

.capabilities .eyebrow {
  color: var(--mist);
}

.capabilities .section-heading p {
  color: var(--mist);
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.72fr);
  gap: clamp(52px, 9vw, 136px);
}

.capability-primary {
  align-self: start;
  padding: 40px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-md);
  background: color-mix(in oklch, var(--white) 4%, transparent);
}

.capability-primary__label,
.capability-item__label {
  color: var(--ember);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.capability-primary h3 {
  margin-top: 60px;
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 300;
}

.capability-primary p,
.capability-item p {
  color: var(--mist);
}

.capability-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.capability-item {
  padding: 28px 0 36px;
  border-top: 1px solid var(--line-dark);
}

.capability-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.capability-item h3 {
  margin-top: 12px;
  font-size: 24px;
}

.capability-item p {
  margin: 12px 0 0;
  font-size: 16px;
}

.install-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.58fr) minmax(0, 1fr);
  gap: clamp(48px, 8vw, 112px);
}

.install-copy h2 {
  margin-bottom: 26px;
}

.install-copy > p {
  color: var(--ink-soft);
}

.target-examples {
  margin: 36px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}

.target-examples strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.prompt-panel {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
  box-shadow: var(--shadow);
}

.prompt-panel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 12px 16px 12px 24px;
  border-bottom: 1px solid var(--line);
}

.prompt-panel__bar span {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.copy-button {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  font: 700 14px/1 var(--font-body);
}

.copy-button:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.prompt {
  max-height: 530px;
  margin: 0;
  padding: 28px;
  overflow: auto;
  color: var(--ink);
  font: 13px/1.65 var(--font-mono);
  white-space: pre-wrap;
  word-break: normal;
  tab-size: 2;
}

.copy-status {
  min-height: 24px;
  margin: 0;
  padding: 0 24px 16px;
  color: var(--ink-soft);
  font-size: 14px;
}

.manual-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 20px;
  color: var(--blue);
  font-weight: 700;
}

.resources {
  padding-block: 84px 52px;
  border-top: 1px solid var(--line);
}

.resource-index {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.resource-index li {
  min-width: 0;
  border-right: 1px solid var(--line);
}

.resource-index li:last-child {
  border-right: 0;
}

.resource-index a {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 126px;
  padding: 20px;
  text-decoration: none;
}

.resource-index a:hover {
  background: var(--paper-raised);
}

.resource-index strong {
  font-size: 16px;
}

.resource-index span {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-footer {
  padding-block: 26px 40px;
  color: var(--ink-soft);
  font-size: 14px;
}

.site-footer .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  font-weight: 700;
}

@media (max-width: 960px) {
  :root {
    --page: min(100% - 40px, 760px);
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .nav {
    grid-template-columns: 1fr auto;
  }

  .mobile-nav {
    position: relative;
    display: block;
  }

  .mobile-nav summary {
    display: inline-flex;
    align-items: center;
    padding: 0 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 700;
    list-style: none;
  }

  .mobile-nav summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav[open] ul {
    position: absolute;
    right: 0;
    width: min(300px, calc(100vw - 40px));
    margin: 12px 0 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--paper-raised);
    box-shadow: var(--shadow);
    list-style: none;
  }

  .mobile-nav a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
  }

  .mobile-nav a:hover {
    background: var(--paper);
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 56px 76px;
  }

  .relay {
    width: min(100%, 570px);
    margin-inline: auto;
  }

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

  .trust__list li:nth-child(2) {
    border-right: 0;
  }

  .trust__list li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .section-heading,
  .capability-layout,
  .install-layout {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 28px;
  }

  .capability-layout,
  .install-layout {
    gap: 48px;
  }

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

  .resource-index li:nth-child(3) {
    border-right: 0;
  }

  .resource-index li:nth-child(-n + 3) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  :root {
    --page: calc(100% - 32px);
  }

  body {
    font-size: 17px;
  }

  .wordmark small {
    display: none;
  }

  .hero {
    gap: 52px;
    padding-block: 48px 64px;
  }

  h1 {
    font-size: clamp(44px, 14vw, 62px);
  }

  .hero__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .relay {
    padding: 10px;
    border-radius: var(--radius-md);
  }

  .trust {
    padding-bottom: 42px;
  }

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

  .trust__list li,
  .trust__list li:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .trust__list li:last-child {
    border-bottom: 0;
  }

  .section {
    padding-block: 84px;
  }

  .section-heading {
    margin-bottom: 48px;
  }

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

  .step,
  .step + .step {
    padding: 28px 0 32px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .step__number {
    margin-bottom: 24px;
  }

  .capability-primary {
    padding: 28px;
  }

  .prompt-panel__bar {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px;
  }

  .copy-button {
    width: 100%;
  }

  .prompt {
    max-height: 440px;
    padding: 20px 16px;
    font-size: 12px;
  }

  .resource-index {
    grid-template-columns: 1fr;
  }

  .resource-index li,
  .resource-index li:nth-child(3) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .resource-index li:last-child {
    border-bottom: 0;
  }

  .resource-index a {
    min-height: 92px;
  }

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

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .relay__line {
    stroke-dashoffset: 0;
  }
}