/**
 * Interior pages · v2
 * page-hero · spec body · product hub · product detail · customers · about · contact
 */

/* ---------- Page hero ---------- */
.page-hero {
  position: relative;
  padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(2.75rem, 5.5vw, 4.5rem);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-elevated);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / var(--grid-size) var(--grid-size),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / var(--grid-size) var(--grid-size);
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 85% 0%, #000 0%, transparent 70%);
  mask-image: radial-gradient(ellipse 70% 90% at 85% 0%, #000 0%, transparent 70%);
  pointer-events: none;
}

.page-hero > .wrap {
  position: relative;
}

.page-hero h1 {
  margin: 0 0 1.25rem;
  font-size: var(--text-h1);
  max-width: 16em;
  overflow-wrap: break-word;
}

.page-hero h1 .sm-break {
  display: none;
}

@media (max-width: 479px) {
  .page-hero h1 .sm-break {
    display: block;
  }
}

.page-hero__lead {
  margin: 0;
  max-width: 38rem;
  color: var(--color-muted);
  font-size: var(--text-lead);
  line-height: 1.7;
}

.page-hero__meta {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.crumb {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.6rem;
  font-family: var(--font-mono), var(--font-sans);
  font-size: var(--text-label);
  letter-spacing: 0.04em;
  color: var(--color-faint);
}

.crumb li {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.crumb a {
  color: var(--color-muted);
  text-decoration: none;
}

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

.crumb li[aria-current="page"] {
  color: var(--color-accent);
}

.crumb li:not(:last-child)::after {
  content: "/";
  color: var(--color-line-strong);
}

.page-hero__partner {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 var(--space-5);
  padding: 0.4rem 0.8rem 0.4rem 0.5rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-elevated);
  font-size: var(--text-caption);
  color: var(--color-muted);
  max-width: none;
}

.page-hero__partner img {
  width: auto;
  height: 1.25rem;
  max-width: 6rem;
  object-fit: contain;
  filter: brightness(0);
  opacity: 0.8;
}

.page-hero__partner img.is-color {
  filter: none;
  opacity: 1;
}

/* Split hero: copy + media (products, hubs with photo) */
.page-hero__split {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 960px) {
  .page-hero__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: var(--space-10);
  }
}

.page-hero__copy {
  min-width: 0;
}

.page-hero__media {
  margin: 0;
  min-width: 0;
}

.page-hero__media img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}

.page-hero__media figcaption,
.product-visual__cap {
  margin-top: 0.8rem;
  font-size: var(--text-caption);
  color: var(--color-muted);
}

.page-hero__media.duo {
  aspect-ratio: 4 / 3;
}

.page-hero__media.duo img {
  border: 0;
  border-radius: 0;
}

.page-hero__media.blueprint {
  padding: 1.15rem 1rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 24px 24px,
    var(--color-surface);
}

.blueprint .stack {
  --step: 0.4rem;
}

.blueprint .stack__layer {
  box-shadow: none;
  background: var(--color-elevated);
}

.blueprint .stack__layer--top {
  background: var(--color-accent);
  color: #fff;
}

.page-hero__partner .mark-word {
  font-size: 0.8125rem;
}

.product-list__mark .mark-word {
  font-size: 0.6875rem;
  letter-spacing: -0.04em;
}

@media (min-width: 960px) {
  .page-hero__media.duo {
    aspect-ratio: 5 / 4;
  }
}

.hero-facts {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: var(--space-5) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-8);
  border-top: 1px solid var(--color-line);
  max-width: 38rem;
}

.hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: var(--text-small);
  color: var(--color-muted);
}

.hero-facts strong {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

/* ---------- Page body ---------- */
.about-proof {
  padding-top: var(--page-section-y);
}

.about-proof .proof {
  border-top-color: var(--color-ink);
}

.stack--detailed {
  --step: 0.45rem;
}

@media (min-width: 720px) {
  .feature-grid > li:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }
}

.page-body {
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.band--surface {
  background: var(--color-surface);
  border-block: 1px solid var(--color-line);
}

.band--surface .spec {
  border-top: 0;
}

.band--surface .check-list li,
.band--surface .link-cards a {
  background: transparent;
}

/* Feature grid: labelled cells with hairlines (AI menu, service scope) */
.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 720px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.feature-grid > li {
  padding: 1.5rem 1.5rem 1.6rem;
  background: var(--color-elevated);
  scroll-margin-top: calc(var(--nav-h) + 1rem);
}

.feature-grid__tag {
  display: inline-block;
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  color: var(--color-accent);
}

.feature-grid h3 {
  margin: 0 0 0.45rem;
  font-size: 1.125rem;
}

.feature-grid p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

/* ---------- Product hub ---------- */
.hub-jump {
  position: sticky;
  top: var(--nav-h);
  z-index: 30;
  border-bottom: 1px solid var(--color-line);
  background: rgba(251, 252, 253, 0.88);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}

@media (prefers-reduced-transparency: reduce) {
  .hub-jump {
    background: var(--color-elevated);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

.hub-jump__inner {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  padding: 0.5rem 0;
  scrollbar-width: none;
}

.hub-jump__inner::-webkit-scrollbar {
  display: none;
}

.hub-jump a {
  flex: 0 0 auto;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: var(--text-small);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-muted);
  transition: color var(--duration-ui) var(--ease-out),
    background-color var(--duration-ui) var(--ease-out);
}

.hub-jump a:hover,
.hub-jump a.is-active {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.product-group {
  display: grid;
  gap: var(--space-5);
  padding-block: var(--page-section-y);
  border-top: 1px solid var(--color-line);
  scroll-margin-top: calc(var(--nav-h) + var(--hub-jump-h));
}

.product-group:first-child {
  border-top: 0;
}

.product-group__head h2 {
  margin: 0;
  font-size: clamp(1.5rem, 1.3rem + 0.8vw, 2rem);
}

.product-group__head p:not(.eyebrow) {
  margin: 0.8rem 0 0;
  color: var(--color-muted);
  font-size: var(--text-small);
  line-height: var(--leading-small);
  max-width: 22rem;
}

.product-group__head .eyebrow {
  margin: 0 0 0.9rem;
}

.page-hero__media.engineering-art img {
  border: 0;
  border-radius: 0;
}

@media (min-width: 900px) {
  .product-group {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: var(--space-10);
  }

  .product-group__head {
    position: sticky;
    top: calc(var(--nav-h) + var(--hub-jump-h) + 1.5rem);
    align-self: start;
  }
}

.product-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.product-list a {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) auto;
  gap: 0.2rem var(--space-4);
  align-items: center;
  padding: 1.15rem 0.5rem 1.15rem 0;
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
  color: inherit;
  transition: background-color var(--duration-ui) var(--ease-out);
}

.product-list__mark {
  grid-row: 1 / span 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  overflow: hidden;
}

.product-list__mark img {
  width: 1.7rem;
  height: 1.7rem;
  object-fit: contain;
  filter: brightness(0);
  opacity: 0.72;
  transition: opacity var(--duration-ui) var(--ease-out);
}

.product-list__mark--wide img {
  width: 2.4rem;
  height: 1.2rem;
}

.product-list__name {
  grid-column: 2;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
}

.product-list__lead {
  grid-column: 2;
  font-size: var(--text-small);
  line-height: var(--leading-small);
  color: var(--color-muted);
}

.product-list__go {
  grid-column: 3;
  grid-row: 1 / span 2;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 1px solid var(--color-line-strong);
  font-size: 0;
  color: var(--color-accent);
  display: grid;
  place-items: center;
  transition: background-color var(--duration-ui) var(--ease-out),
    border-color var(--duration-ui) var(--ease-out),
    color var(--duration-ui) var(--ease-out);
}

.product-list__go::after {
  content: "";
  width: 1rem;
  height: 1rem;
  background: currentColor;
  -webkit-mask: var(--icon-arrow) center / contain no-repeat;
  mask: var(--icon-arrow) center / contain no-repeat;
}

@media (hover: hover) and (pointer: fine) {
  .product-list a:hover .product-list__go {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
  }

  .product-list a:hover .product-list__mark img {
    opacity: 1;
  }

  .product-list a:hover .product-list__name {
    color: var(--color-accent);
  }
}

@media (max-width: 639px) {
  .product-list__go {
    display: none;
  }

  .product-list a {
    grid-template-columns: 3rem minmax(0, 1fr);
  }
}

/* ---------- Product detail ---------- */
.product-hero-visual {
  padding-block: clamp(2.5rem, 5vw, 4rem) 0;
}

.spec__body > .stack-note {
  max-width: none;
}

.arch-diagram {
  margin: 0;
}

.arch-summary {
  display: none;
}

.arch-diagram__frame {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-elevated);
  overflow: hidden;
}

.arch-diagram__frame--dark {
  border-color: transparent;
  background: #0a0c12;
  box-shadow: var(--shadow-lift);
}

.arch-diagram__frame img,
.arch-diagram__frame object {
  display: block;
  width: 100%;
  height: auto;
}

.arch-diagram__cap {
  margin: 0.8rem 0 0;
  font-size: var(--text-caption);
  color: var(--color-muted);
}

@media (max-width: 699px) {
  .arch-summary {
    display: grid;
    margin: 0;
    padding: 0;
    list-style: none;
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    background: var(--color-elevated);
    overflow: hidden;
  }

  .arch-diagram:has(.arch-summary) .arch-diagram__frame {
    display: none;
  }

  .arch-summary li {
    display: grid;
    gap: 0.35rem;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-line);
    font-size: var(--text-small);
    color: var(--color-muted);
  }

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

  .arch-summary span {
    font-family: var(--font-mono), var(--font-sans);
    font-size: var(--text-label);
    color: var(--color-accent);
  }

  .arch-summary strong {
    color: var(--color-ink);
    font-size: var(--text-body);
  }
}

/* Two-column fit / capability table inside a spec body */
.spec-pair {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 720px) {
  .spec-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.spec-pair h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono), var(--font-sans);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-faint);
}

.stack-note {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  font-size: var(--text-small);
  color: var(--color-ink-2);
  max-width: none;
}

.stack-note .mono {
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  color: var(--color-accent);
}

/* ---------- Customers ---------- */
.page-section {
  padding-bottom: var(--page-section-y);
}

.logo-groups {
  display: grid;
  padding-top: var(--space-6);
}

.logo-wall-group {
  display: grid;
  gap: var(--space-4);
  padding-block: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--color-line);
}

.logo-wall-group:first-child {
  border-top: 0;
}

.logo-wall-group__title {
  margin: 0;
  font-size: 1.125rem;
}

.logo-wall-group__count {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 400;
  color: var(--color-faint);
}

@media (min-width: 900px) {
  .logo-wall-group {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    column-gap: var(--space-8);
  }

  .logo-wall-group .logo-wall {
    --logo-cols: 4;
  }
}

.wall-note {
  margin: var(--space-6) 0 0;
  font-size: var(--text-caption);
  max-width: none;
}

/* ---------- About ---------- */
.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--color-line);
}

.history-list li {
  display: grid;
  gap: 0.35rem var(--space-5);
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--color-line);
}

@media (min-width: 640px) {
  .history-list li {
    grid-template-columns: 8rem minmax(0, 1fr);
  }
}

.history-list time {
  font-family: var(--font-mono), var(--font-sans);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-accent);
  padding-top: 0.1rem;
}

.history-list strong {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 1.0625rem;
  color: var(--color-ink);
}

.history-list p {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

.eco-groups {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 720px) {
  .eco-groups {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.eco-group__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono), var(--font-sans);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  color: var(--color-faint);
}

.eco-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.eco-chips li {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: var(--text-small);
  color: var(--color-ink-2);
}

/* ---------- Contact ---------- */
.page-hero--contact { padding-block: 3rem; }
.contact-layout { display: grid; gap: 3rem; align-items: start; }
.contact-intro__note { max-width: 26rem; margin-top: 2rem; color: var(--color-muted); font-size: var(--text-small); line-height: 1.8; }
.contact-form { min-width: 0; padding: clamp(1.25rem, 2.5vw, 1.5rem); border: 1px solid var(--color-line-strong); border-radius: var(--radius); background: var(--color-elevated); box-shadow: 0 12px 36px rgb(21 52 93 / 4%); }
.contact-form__heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--color-line); }
.contact-form__heading h2 { margin: 0; font-size: 1.25rem; }
.contact-form__heading > span { color: var(--color-muted); font-size: var(--text-caption); white-space: nowrap; }
.contact-compose { padding: 1.5rem 0 1rem; }
.contact-compose > label { display: block; color: var(--color-ink); font-size: 1rem; font-weight: 500; }
.contact-compose textarea { display: block; width: 100%; min-width: 0; min-height: 9rem; margin-top: 0.75rem; padding: 0.5rem; border: 1px solid transparent; border-radius: 4px; background: transparent; color: var(--color-ink); font: inherit; font-size: 1rem; line-height: 1.8; resize: vertical; }
.contact-compose textarea:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.contact-form__hint { margin: 0.5rem 0 0; color: var(--color-muted); font-size: var(--text-caption); }
.contact-form__minimum { float: right; }
.contact-signature { display: grid; grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr); gap: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--color-line); }
.contact-field { display: block; min-width: 0; font-size: var(--text-caption); color: var(--color-muted); }
.contact-field input { display: block; width: 100%; min-width: 0; margin-top: 0.3rem; padding: 0.5rem 0; border: 0; border-bottom: 1px solid var(--color-line-strong); border-radius: 0; background: transparent; color: var(--color-ink); font: inherit; font-size: 1rem; line-height: 1.6; }
.contact-field input:focus { outline: none; border-bottom: 2px solid var(--color-accent); margin-bottom: -1px; }
.contact-field input::placeholder, .contact-compose textarea::placeholder { color: var(--color-faint); }
.contact-company { margin: 1.25rem 0; }
.contact-company summary { width: fit-content; min-height: 2rem; cursor: pointer; font-size: var(--text-small); color: var(--color-accent); }
.contact-company summary span { margin-left: 0.5rem; color: var(--color-muted); font-size: var(--text-caption); }
.contact-company summary:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 4px; }
.contact-company .contact-field { margin-top: 0.25rem; }
.contact-form__privacy { flex: 1; margin: 0; color: var(--color-muted); font-size: var(--text-caption); }
.contact-form__actions { display: flex; align-items: center; flex-wrap: wrap; gap: 0.75rem; padding-top: 0.75rem; }
.contact-form__actions [hidden] { display: none; }
.contact-form button:disabled { opacity: 0.5; cursor: not-allowed; }
.contact-form__status { margin: 0.75rem 0 0; min-height: 1.6em; color: var(--color-muted); font-size: var(--text-caption); line-height: 1.7; overflow-wrap: anywhere; }
.contact-form__status:empty { margin-top: 0; min-height: 0; }
.contact-form__status[data-state="success"] { color: var(--color-accent); }
.contact-form__status[data-state="error"], .contact-form__status[data-state="verification-error"] { color: var(--color-ink); }
@media (min-width: 900px) {
  .contact-layout { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(3rem, 6vw, 6rem); }
  .contact-intro { position: sticky; top: calc(var(--nav-h) + 2rem); }
}
@media (max-width: 479px) {
  .contact-signature { grid-template-columns: 1fr; gap: 1rem; }
  .contact-form__heading { gap: 0.5rem; }
  .contact-compose textarea { min-height: 9rem; }
}