/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5
 * genre: modern-minimal · macrostructure: Workbench · theme: Salient Mass brand-locked
 * H2 split knobs: ratio=7/5, right=proof-column, divider=vertical-rule
 * F5 annotated-screenshot knobs: callouts=margin-labels, frame=plain, anchor=image-led
 * nav: N9 edge-aligned minimal (official vector lockup, outlined CTA, tight)
 * footer: Ft2 inline single line (credit/wordmark/links, vertical-rule, spaced)
 * enrichment: none · motion: none · mobile: 320/375/414/768
 * verification: contrast pass (6.38:1 minimum) · slop test pass (58/58)
 */
@import url("/css/tokens.css?v=20260915-calm-type");

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

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-paper);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
p,
figure {
  margin: 0;
}

h1,
h2,
h3 {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--color-ink-strong);
  font-family: var(--font-display);
  font-style: normal;
  letter-spacing: -0.035em;
}

main > section,
.site-header,
.site-footer {
  width: min(100%, var(--page-width));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.skip-link {
  position: fixed;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 1000;
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-accent-ink);
  background: var(--color-accent);
  font-weight: 700;
  transform: translateY(-200%);
}

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

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

/* Edge-aligned technical header */

.site-header {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  border-bottom: var(--rule-width) solid var(--color-rule);
}

.brand {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.brand-mark {
  width: calc(var(--header-height) - var(--space-2xs));
  height: calc(var(--header-height) - var(--space-2xs));
}

.header-cta {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding-inline: var(--space-sm);
  border: var(--rule-width) solid var(--color-rule-strong);
  border-radius: var(--radius-control);
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: border-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}

.header-cta:active {
  color: var(--color-accent);
}

/* Split field-note hero */

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(18rem, 5fr);
  column-gap: clamp(var(--space-xl), 7vw, var(--space-3xl));
  row-gap: var(--space-2xl);
  padding-top: clamp(var(--space-2xl), 8vw, var(--space-3xl));
  padding-bottom: clamp(var(--space-3xl), 12vw, var(--space-4xl));
}

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

.company-line {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xs);
  border-bottom: var(--rule-width) solid var(--color-rule-strong);
  color: var(--color-ink-faint);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.company-line span {
  margin-left: var(--space-2xs);
}

.hero h1 {
  max-width: none;
  font-size: var(--text-display);
  font-weight: 600;
  line-height: 1.02;
}

.hero h1 span {
  color: var(--color-accent);
}

.hero-brief {
  align-self: end;
  padding-left: var(--space-xl);
  border-left: var(--rule-width) solid var(--color-rule-strong);
}

.hero-lead {
  max-width: 58ch;
  color: var(--color-ink-muted);
  font-size: var(--text-md);
  line-height: 1.55;
}

.hero-actions,
.product-action-bar > div {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.action {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: background-color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
}

.action-primary {
  padding-inline: var(--space-md);
  color: var(--color-accent-ink);
  background: var(--color-accent);
  border: var(--rule-width) solid var(--color-accent);
  border-radius: var(--radius-control);
}

.action-primary:active {
  transform: translateY(1px);
}

.action-text {
  color: var(--color-ink-muted);
  border-bottom: var(--rule-width) solid var(--color-rule-strong);
}

.action-text:active {
  color: var(--color-accent);
}

.operating-sequence {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: var(--rule-width) solid var(--color-rule-strong);
  border-bottom: var(--rule-width) solid var(--color-rule-strong);
}

.operating-sequence li {
  min-width: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  align-content: start;
  column-gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg) var(--space-lg) 0;
}

.operating-sequence li + li {
  padding-left: var(--space-lg);
  border-left: var(--rule-width) solid var(--color-rule);
}

.sequence-index {
  grid-row: 1 / 3;
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.operating-sequence strong {
  color: var(--color-ink-strong);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.1;
}

.operating-sequence li > span:last-child {
  margin-top: var(--space-2xs);
  color: var(--color-ink-faint);
  font-size: var(--text-sm);
  line-height: 1.45;
}

/* Product workbench */

.product-tour {
  width: 100%;
  max-width: none;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  background: var(--color-paper-deep);
  border-top: var(--rule-width) solid var(--color-rule);
  border-bottom: var(--rule-width) solid var(--color-rule);
}

.product-intro,
.workbench,
.product-action-bar {
  width: min(100%, var(--page-width));
  margin-inline: auto;
}

.product-intro {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(18rem, 5fr);
  gap: clamp(var(--space-xl), 7vw, var(--space-3xl));
  margin-bottom: var(--space-2xl);
}

.product-wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  color: var(--color-ink-muted);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1;
}

.product-wordmark img {
  width: 2.75rem;
  height: 2.75rem;
  object-fit: contain;
}

.product-wordmark strong {
  color: var(--color-accent);
  font-weight: 600;
}

.product-intro h2,
.philosophy-intro h2,
.contact h2 {
  font-size: var(--text-display-small);
  font-weight: 600;
  line-height: 1.02;
}

.product-summary {
  align-self: end;
}

.product-summary > p {
  max-width: 60ch;
  color: var(--color-ink-muted);
  font-size: var(--text-md);
}

.framework-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-sm);
  border-top: var(--rule-width) solid var(--color-rule-strong);
}

.framework-list span {
  color: var(--color-ink-faint);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tour-stage {
  min-width: 0;
  background: var(--color-paper-raised);
  border: var(--rule-width) solid var(--color-rule-strong);
  border-radius: var(--radius-frame);
  overflow: clip;
}

.tour-stage figcaption {
  min-height: 5.5rem;
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr);
  align-items: start;
  gap: var(--space-lg);
  padding: var(--space-md);
  border-bottom: var(--rule-width) solid var(--color-rule-strong);
}

.tour-stage figcaption span {
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tour-stage figcaption strong {
  max-width: 44rem;
  color: var(--color-ink-strong);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  line-height: 1.35;
}

.tour-stage img {
  width: 100%;
  background: var(--color-ink-strong);
}

.tour-stage-primary img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top;
}

.tour-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.tour-stage-controls img {
  height: calc(100% - 5.5rem);
  object-fit: cover;
  object-position: top;
}

.tour-detail-stack {
  display: grid;
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.tour-stage-compact figcaption {
  min-height: auto;
  grid-template-columns: 7rem minmax(0, 1fr);
  gap: var(--space-sm);
  padding: var(--space-sm);
}

.tour-stage-compact figcaption strong {
  font-size: var(--text-sm);
}

.tour-stage-compact img {
  aspect-ratio: 16 / 7;
  object-fit: cover;
  object-position: top;
}

.product-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  color: var(--color-ink-strong);
  background: var(--color-paper-blue);
  border: var(--rule-width) solid var(--color-product);
}

.product-action-bar p {
  max-width: 34rem;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.3;
}

.product-action-bar > div {
  flex-shrink: 0;
  margin-top: 0;
}

.action-blue {
  color: var(--color-ink-strong);
  background: var(--color-product);
  border-color: var(--color-product);
}

/* Typographic principle index */

.philosophy {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.philosophy-intro {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(18rem, 5fr);
  gap: clamp(var(--space-xl), 7vw, var(--space-3xl));
  margin-bottom: var(--space-3xl);
}

.philosophy-intro p {
  align-self: end;
  max-width: 34rem;
  color: var(--color-ink-muted);
  font-size: var(--text-md);
}

.principle-index {
  border-bottom: var(--rule-width) solid var(--color-rule-strong);
}

.principle {
  display: grid;
  grid-template-columns: minmax(14rem, 5fr) minmax(0, 7fr);
  gap: clamp(var(--space-xl), 7vw, var(--space-3xl));
  padding: var(--space-xl) 0;
  border-top: var(--rule-width) solid var(--color-rule-strong);
}

.principle:nth-child(even) {
  margin-left: 9%;
}

.principle h3 {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: 600;
  line-height: 1.05;
}

.principle p {
  max-width: 65ch;
  color: var(--color-ink-muted);
  font-size: var(--text-md);
}

/* Contact as the page close */

.contact {
  width: 100%;
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(18rem, 5fr);
  gap: clamp(var(--space-xl), 7vw, var(--space-3xl));
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  background: var(--color-paper-raised);
  border-top: var(--rule-width) solid var(--color-rule-strong);
  border-bottom: var(--rule-width) solid var(--color-rule-strong);
}

.contact-lead {
  min-width: 0;
}

.contact h2 {
  max-width: 15ch;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-2xl));
  font-weight: 600;
  line-height: 1.1;
  text-decoration: underline;
  text-decoration-thickness: var(--rule-width);
  text-underline-offset: var(--underline-offset);
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out), text-decoration-color var(--dur-short) var(--ease-out);
}

.contact-email:active {
  color: var(--color-accent-hover);
}

.contact-notes {
  align-self: end;
  padding-top: var(--space-md);
  border-top: var(--rule-width) solid var(--color-rule-strong);
}

.contact-notes h3 {
  margin-bottom: var(--space-md);
  font-size: var(--text-md);
  font-weight: 600;
}

.contact-notes li {
  position: relative;
  padding-left: var(--space-md);
  color: var(--color-ink-muted);
}

.contact-notes li + li {
  margin-top: var(--space-xs);
}

.contact-notes li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.contact-notes p {
  margin-top: var(--space-lg);
  color: var(--color-ink-faint);
  font-size: var(--text-sm);
}

/* Inline colophon */

.site-footer {
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  color: var(--color-ink-faint);
  font-size: var(--text-xs);
}

.site-footer p {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-footer p span + span {
  padding-left: var(--space-lg);
  border-left: var(--rule-width) solid var(--color-rule-strong);
}

.site-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.site-footer a:active {
  color: var(--color-accent-hover);
}

a[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

@media (hover: hover) and (pointer: fine) {
  .header-cta:hover {
    color: var(--color-ink-strong);
    border-color: var(--color-accent);
    background: var(--color-paper-raised);
  }

  .action-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
  }

  .action-text:hover {
    color: var(--color-ink-strong);
    border-bottom-color: var(--color-accent);
  }

  .action-blue:hover {
    background: var(--color-product-hover);
    border-color: var(--color-product-hover);
  }

  .contact-email:hover {
    color: var(--color-ink-strong);
    text-decoration-color: var(--color-accent);
  }

  .site-footer a:hover {
    color: var(--color-accent);
  }
}

/* Error page */

.error-main {
  min-height: calc(100vh - var(--header-height) - var(--space-3xl));
  display: grid;
  place-items: center;
  padding: var(--space-3xl) var(--page-gutter);
}

.error-content {
  max-width: 45rem;
  text-align: left;
}

.error-code {
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: clamp(6rem, 20vw, 12rem);
  font-weight: 600;
  line-height: 0.8;
  letter-spacing: -0.07em;
}

.error-content h1 {
  margin-top: var(--space-lg);
  font-size: var(--text-display-small);
}

.error-content > p:not(.error-code) {
  max-width: 36rem;
  margin-top: var(--space-md);
  color: var(--color-ink-muted);
}

.error-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

@media (max-width: 60rem) {
  .hero,
  .product-intro,
  .philosophy-intro,
  .contact {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-brief {
    padding-top: var(--space-lg);
    padding-left: 0;
    border-top: var(--rule-width) solid var(--color-rule-strong);
    border-left: 0;
  }

  .hero-lead,
  .product-summary > p,
  .philosophy-intro p {
    max-width: 42rem;
  }

  .product-intro,
  .philosophy-intro {
    row-gap: var(--space-xl);
  }

  .tour-detail-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .tour-stage-controls img {
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .tour-detail-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: auto;
  }

  .product-action-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .principle:nth-child(even) {
    margin-left: 0;
  }
}

@media (max-width: 48rem) {
  .hero {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-3xl);
  }

  .operating-sequence {
    grid-template-columns: minmax(0, 1fr);
  }

  .operating-sequence li,
  .operating-sequence li + li {
    padding: var(--space-md) 0;
    border-left: 0;
  }

  .operating-sequence li + li {
    border-top: var(--rule-width) solid var(--color-rule);
  }

  .tour-stage figcaption,
  .tour-stage-compact figcaption {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2xs);
  }

  .principle {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
  }

  .principle h3 br {
    display: none;
  }

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

  .site-footer {
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
  }

  .site-footer p {
    gap: var(--space-2xs);
  }

  .site-footer p span + span {
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 40rem) {
  :root {
    --page-gutter: clamp(1rem, 5vw, 1.5rem);
  }

  .site-header {
    gap: var(--space-sm);
  }

  .brand-mark {
    width: calc(var(--header-height) - var(--space-sm));
    height: calc(var(--header-height) - var(--space-sm));
  }

  .header-cta {
    padding-inline: var(--space-xs);
  }

  .company-line {
    margin-bottom: var(--space-lg);
  }

  .company-line span {
    display: none;
  }

  .hero h1 {
    line-height: 1.02;
  }

  .hero-actions,
  .product-action-bar > div {
    align-items: stretch;
    flex-direction: column;
  }

  .action-primary {
    width: 100%;
  }

  .action-text {
    align-self: flex-start;
  }

  .product-tour,
  .philosophy,
  .contact {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .tour-detail-stack {
    grid-template-columns: minmax(0, 1fr);
  }

  .tour-stage-primary img,
  .tour-stage-controls img,
  .tour-stage-compact img {
    aspect-ratio: 16 / 10;
  }

  .product-action-bar {
    padding: var(--space-md);
  }

  .contact-email {
    font-size: clamp(1.15rem, 5.5vw, 1.5rem);
  }
}

@media (max-width: 23.5rem) {
  .header-cta {
    font-size: var(--text-xs);
  }
}

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

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