:root {
  color-scheme: dark;
  --bg: #07090e;
  --bg-2: #0b0e14;
  --ink: #f3f6fa;
  --muted: #9aa4b2;
  --faint: #6d7886;
  --line: rgba(232, 238, 246, 0.12);
  --line-strong: rgba(232, 238, 246, 0.22);
  --accent: #8eb7e0;
  --accent-deep: #3d74a8;
  --danger: #e7a0a0;
  --ok: #b7e0c8;
  --font: "Instrument Sans", "Segoe UI", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1120px;
  --measure: 40rem;
  --header: 72px;
  --pad: clamp(1.25rem, 4vw, 2.75rem);
}

*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

html,
body {
  overflow-x: clip;
}

body {
  font-family: var(--font);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: rgba(61, 116, 168, 0.45); color: #fff; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 80;
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
}
.skip-link:focus { top: 0.75rem; }

/* Atmosphere — one quiet light, no ornaments */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(80vw 50vh at 78% -10%, rgba(61, 116, 168, 0.22), transparent 55%),
    var(--bg);
}
.atmosphere::after {
  content: "";
  position: absolute;
  inset: -10% -10% auto auto;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(142, 183, 224, 0.08), transparent 62%);
  animation: drift 36s var(--ease) infinite alternate;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-4%, 6%, 0); }
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  height: var(--header);
  display: flex;
  align-items: center;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(7, 9, 14, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.header-bar {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding-inline: var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-width: 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  font-size: 0.98rem;
}
.brand img {
  width: auto;
  height: 40px;
  border-radius: 0;
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}
.nav a {
  position: relative;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.2rem 0;
  transition: color 0.25s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav a:hover,
.nav a[aria-current="page"] { color: var(--ink); }
.nav a:hover::after,
.nav a[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 6px;
}
.nav-toggle span {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform 0.3s var(--ease), width 0.3s var(--ease), opacity 0.2s ease;
}
.nav-toggle span:nth-child(1) { width: 22px; }
.nav-toggle span:nth-child(2) { width: 16px; }
.nav-toggle span:nth-child(3) { width: 22px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); width: 22px; }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); width: 22px; }

.nav-mobile {
  display: none;
  position: fixed;
  inset: var(--header) 0 0 0;
  z-index: 39;
  background: rgba(7, 9, 14, 0.96);
  padding: 1.5rem var(--pad) 3rem;
  flex-direction: column;
  gap: 0.25rem;
}
.nav-mobile.is-open { display: flex; }
.nav-mobile a {
  font-size: 1.65rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

/* Type */
h1, h2, h3 {
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.08;
}
h1 { font-size: clamp(2.6rem, 5.4vw, 4.75rem); max-width: 100%; }
h2 { font-size: clamp(1.85rem, 3vw, 2.6rem); }
h3 { font-size: 1.35rem; letter-spacing: -0.02em; }
.kicker {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.lede {
  max-width: var(--measure);
  color: var(--muted);
  font-size: 1.125rem;
  line-height: 1.6;
}
.prose {
  max-width: var(--measure);
  color: var(--muted);
}
.prose p + p { margin-top: 1rem; }
.prose strong { color: var(--ink); font-weight: 500; }

.wrap {
  width: min(100%, var(--max));
  margin-inline: auto;
  padding-inline: var(--pad);
}

main { flex: 1; padding-top: var(--header); }

/* Hero */
.hero {
  min-height: calc(100vh - var(--header));
  min-height: calc(100dvh - var(--header));
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(2.75rem, 7vh, 4.5rem);
  overflow: hidden;
}
.hero-layout {
  width: min(100%, var(--max));
  margin-inline: auto;
  padding-inline: var(--pad);
}
.hero .kicker { margin-bottom: 1.25rem; }
.hero h1 { max-width: 12ch; }
.hero-role {
  margin-top: 1rem;
  color: var(--faint);
  font-size: 1rem;
  letter-spacing: 0.01em;
}
.hero .lede { margin-top: 1.75rem; }
.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin-top: 2rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 0.15rem;
  transition: border-color 0.25s ease, color 0.25s ease, gap 0.35s var(--ease);
}
.text-link::after {
  content: "→";
  color: var(--accent);
  transition: transform 0.35s var(--ease);
}
.text-link:hover { border-color: var(--accent); gap: 0.8rem; }
.text-link:hover::after { transform: translateX(3px); }

/* Sections */
.section {
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
  border-top: 1px solid var(--line);
}
.section-intro {
  display: grid;
  gap: 1.25rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
@media (min-width: 860px) {
  .section-intro {
    grid-template-columns: 220px 1fr;
    gap: 3rem;
    align-items: end;
  }
  .section-intro h2 { max-width: 16ch; }
}

.split {
  display: grid;
  gap: 2rem 4rem;
}
@media (min-width: 860px) {
  .split { grid-template-columns: 0.9fr 1.1fr; align-items: start; }
  .split.wide-first { grid-template-columns: 1.15fr 0.85fr; }
}

/* Index rows — the list is the layout */
.index { border-top: 1px solid var(--line); }
.index-row {
  display: grid;
  gap: 0.65rem 1.5rem;
  padding: 1.65rem 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  transition: background 0.35s ease;
}
.index-row:hover { background: linear-gradient(90deg, rgba(142, 183, 224, 0.05), transparent 70%); }
@media (min-width: 760px) {
  .index-row {
    grid-template-columns: 4.5rem minmax(12rem, 16rem) 1fr auto;
    align-items: baseline;
    gap: 1.5rem 2rem;
  }
}
.index-no {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}
.index-row h3 {
  font-size: 1.35rem;
  transition: color 0.3s ease;
}
.index-row:hover h3 { color: var(--accent); }
.index-row p { color: var(--muted); font-size: 1rem; max-width: 46ch; }
.index-go {
  color: var(--faint);
  font-size: 0.95rem;
  justify-self: start;
}
@media (min-width: 760px) {
  .index-go { justify-self: end; }
}
.index-row:hover .index-go { color: var(--ink); }

/* Ruled notes */
.notes { border-top: 1px solid var(--line); }
.note {
  display: grid;
  gap: 0.4rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 720px) {
  .note { grid-template-columns: 11rem 1fr; gap: 2rem; align-items: baseline; }
}
.note dt {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}
.note dd { color: var(--muted); }

.plain-list {
  list-style: none;
  margin-top: 1.25rem;
  max-width: var(--measure);
}
.plain-list li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.plain-list li:last-child { border-bottom: 1px solid var(--line); }
.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: 5px;
  height: 1px;
  background: var(--accent);
}

/* Feature spread */
.feature {
  display: grid;
  gap: 2.5rem;
  align-items: end;
}
@media (min-width: 900px) {
  .feature { grid-template-columns: 1.2fr 0.8fr; gap: 4rem; }
}
.feature h2 { font-size: clamp(2.4rem, 5vw, 4.25rem); max-width: 10ch; }
.feature-meta {
  color: var(--faint);
  font-size: 0.95rem;
  margin-top: 1.5rem;
}
.mark-block {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.mark-block img {
  width: 52px;
  height: 52px;
  border-radius: 12px;
}
.mark-block strong { display: block; font-weight: 500; letter-spacing: -0.02em; }
.mark-block span { color: var(--muted); font-size: 0.95rem; }

.figure {
  margin-top: 2.5rem;
}
.figure img { width: 100%; height: auto; }
.figure figcaption {
  margin-top: 0.85rem;
  color: var(--faint);
  font-size: 0.9rem;
}

/* Page heads */
.page-head {
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(2.5rem, 5vw, 3.5rem);
}
.page-head .kicker { margin-bottom: 1rem; }
.page-head h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  max-width: 16ch;
}
.page-head .lede { margin-top: 1.25rem; }

.chapter {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  border-top: 1px solid var(--line);
}
.chapter-grid {
  display: grid;
  gap: 1.25rem 3rem;
}
@media (min-width: 860px) {
  .chapter-grid { grid-template-columns: 240px 1fr; align-items: start; }
}
.chapter-index .num {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--faint);
  margin-bottom: 0.7rem;
}
.chapter h2 { font-size: clamp(1.7rem, 2.5vw, 2.15rem); }

/* Contact */
.form { display: grid; gap: 1.35rem; max-width: 40rem; }
.form-row { display: grid; gap: 1.35rem; }
@media (min-width: 700px) {
  .form-row.two { grid-template-columns: 1fr 1fr; }
}
.field label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 500;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 0.7rem 0;
  outline: none;
  transition: border-color 0.25s ease;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-bottom-color: var(--accent); }
.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%), linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 8px) 50%, calc(100% - 3px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.field .hint { margin-top: 0.45rem; color: var(--faint); font-size: 0.88rem; }
.field .error-text { display: none; margin-top: 0.4rem; color: var(--danger); font-size: 0.88rem; }
.field.error input,
.field.error select,
.field.error textarea { border-bottom-color: var(--danger); }
.field.error .error-text { display: block; }
.hp {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}
.form-status { display: none; font-size: 0.98rem; }
.form-status.is-visible { display: block; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: var(--danger); }

.submit {
  justify-self: start;
  margin-top: 0.4rem;
  background: transparent;
  color: var(--ink);
  border: 0;
  border-bottom: 1px solid var(--ink);
  padding: 0.35rem 0;
  cursor: pointer;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.submit:hover { color: var(--accent); border-color: var(--accent); }
.submit:disabled { opacity: 0.55; cursor: wait; }

.aside-block + .aside-block { margin-top: 2.25rem; }
.aside-block h2 {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.7rem;
}
.aside-block address,
.aside-block p { color: var(--muted); font-style: normal; }
.aside-links { margin-top: 0.8rem; display: grid; gap: 0.35rem; }
.aside-links a { color: var(--ink); border-bottom: 1px solid transparent; width: fit-content; }
.aside-block p a { border-bottom: 1px solid var(--line); }
.aside-links a:hover { border-bottom-color: var(--accent); color: var(--accent); }

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding: 3rem 0 2rem;
}
.footer-grid {
  display: grid;
  gap: 2rem;
}
@media (min-width: 800px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr; }
}
.footer-platforms {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}
.footer-platforms > span {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}
.footer-platforms nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.35rem;
  margin-top: 0.85rem;
}
.footer-platforms a {
  color: var(--muted);
  font-size: 0.98rem;
}
.footer-platforms a:hover { color: var(--ink); }
.footer-name {
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}
.site-footer address {
  font-style: normal;
  color: var(--muted);
  line-height: 1.55;
  font-size: 0.95rem;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.footer-col span {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.35rem;
}
.footer-col a {
  color: var(--muted);
  font-size: 0.98rem;
  width: fit-content;
  transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--ink); }
.legal { max-width: 42rem; }
.legal h2 {
  font-size: clamp(1.55rem, 2.4vw, 2rem);
  margin: 2.6rem 0 0.8rem;
}
.legal p,
.legal li {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}
.legal p + p,
.legal ul + p,
.legal p + ul { margin-top: 0.9rem; }
.legal ul { margin: 0.85rem 0 0; padding-left: 1.15rem; }
.legal li + li { margin-top: 0.45rem; }
.legal a { color: var(--ink); border-bottom: 1px solid var(--line); }
.legal a:hover { border-bottom-color: var(--accent); }
.doc .photo-break { height: clamp(160px, 26vh, 300px); margin: 2.75rem 0; }

.footer-base {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-legal { display: flex; gap: 1.15rem; }
.footer-legal a { color: var(--faint); }
.footer-legal a:hover { color: var(--ink); }

/* Photographic bands that move with scroll */
.scene { position: relative; isolation: isolate; overflow: hidden; }
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 80;
  pointer-events: none;
}
.photo-break {
  height: clamp(220px, 40vh, 480px);
}
.photo-break .scene-bg { opacity: 1; filter: saturate(0.9) contrast(1.05); }
.photo-break::before {
  background: linear-gradient(180deg, var(--bg) 0%, rgba(7, 9, 14, 0.2) 24%, rgba(7, 9, 14, 0.15) 76%, var(--bg) 100%);
}
.scene-bg {
  position: absolute;
  inset: -20% 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.92;
  filter: saturate(0.8) contrast(1.04);
  pointer-events: none;
  will-change: transform;
}
.scene::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 9, 14, 0.94) 0%, rgba(7, 9, 14, 0.62) 28%, rgba(7, 9, 14, 0.7) 72%, rgba(7, 9, 14, 0.96) 100%),
    linear-gradient(90deg, rgba(7, 9, 14, 0.45), transparent 55%);
}
.scene > .wrap,
.scene > .hero-layout,
.scene > .product-open,
.scene .wrap { position: relative; z-index: 2; }

/* Motion */
.rise > * {
  opacity: 0;
  animation: rise 0.9s var(--ease) forwards;
}
.rise > *:nth-child(1) { animation-delay: 0.05s; }
.rise > *:nth-child(2) { animation-delay: 0.14s; }
.rise > *:nth-child(3) { animation-delay: 0.24s; }
.rise > *:nth-child(4) { animation-delay: 0.34s; }
.rise > *:nth-child(5) { animation-delay: 0.44s; }
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@view-transition { navigation: auto; }
::view-transition-old(root) {
  animation: fade-out 0.28s var(--ease) both;
}
::view-transition-new(root) {
  animation: fade-in 0.45s var(--ease) both;
}
@keyframes fade-out { to { opacity: 0; } }
@keyframes fade-in { from { opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .atmosphere::after,
  .rise > * { animation: none; opacity: 1; transform: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .text-link,
  .nav a,
  .nav a::after,
  .index-row,
  .index-row h3 { transition: none; }
  ::view-transition-old(root),
  ::view-transition-new(root) { animation: none; }
}

@media (max-width: 1080px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  h1 { font-size: clamp(2.4rem, 11vw, 3.6rem); }
}

/* Technology page */
.tech-open {
  min-height: calc(100dvh - var(--header));
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(3rem, 8vh, 5rem);
}
.tech-open h1 { max-width: 14ch; }

.flow {
  border-top: 1px solid var(--line);
  padding: clamp(2.5rem, 5vw, 3.5rem) 0 clamp(3rem, 6vw, 4.5rem);
}
.flow ol {
  list-style: none;
  display: grid;
  gap: 2rem;
  position: relative;
}
@media (min-width: 800px) {
  .flow ol {
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
  }
  .flow ol::before {
    content: "";
    position: absolute;
    top: 4px;
    left: 0;
    right: 8%;
    height: 1px;
    background: var(--line-strong);
    transform: scaleX(0);
    transform-origin: left;
  }
  .flow.is-in ol::before {
    animation: draw 1.1s var(--ease) forwards;
  }
}
@keyframes draw {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
.flow li { position: relative; padding-top: 1.6rem; }
.flow li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.5px var(--accent);
}
.flow .step {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--faint);
  margin-bottom: 0.45rem;
}
.flow strong {
  display: block;
  font-weight: 500;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}
.flow span.what { color: var(--muted); font-size: 0.95rem; }

.doc {
  border-top: 1px solid var(--line);
  padding: clamp(3rem, 6vw, 4.5rem) 0 clamp(4rem, 8vw, 6rem);
}
.doc-grid {
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 900px) {
  .doc-grid {
    grid-template-columns: 180px 1fr;
    gap: 4rem;
    align-items: start;
  }
  .doc-rail {
    position: sticky;
    top: calc(var(--header) + 2rem);
  }
}
.doc-rail {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.doc-rail a {
  color: var(--faint);
  font-size: 0.95rem;
  transition: color 0.25s ease;
}
.doc-rail a:hover { color: var(--ink); }

.essay + .essay {
  margin-top: clamp(3.5rem, 7vw, 5.5rem);
  padding-top: clamp(3.5rem, 7vw, 5.5rem);
  border-top: 1px solid var(--line);
}
.essay h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin: 0.4rem 0 1.25rem;
}
.essay .num {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.essay .prose p + p { margin-top: 1.1rem; }

@media (prefers-reduced-motion: reduce) {
  .flow ol::before { transform: none; animation: none; }
}

/* Products */
.product-open {
  padding-top: clamp(5.5rem, 16vh, 10rem);
  padding-bottom: clamp(3.5rem, 8vh, 5.5rem);
}
.product-markline {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}
.product-markline img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.product-markline .kicker { margin: 0; }

.kinds {
  display: grid;
  border-top: 1px solid var(--line);
}
@media (min-width: 800px) {
  .kinds { grid-template-columns: repeat(3, 1fr); }
}
.kinds article {
  padding: 1.75rem 0 0.25rem;
}
@media (min-width: 800px) {
  .kinds article { padding: 1.75rem 2rem 0.25rem 0; }
  .kinds article + article {
    padding-left: 2rem;
    border-left: 1px solid var(--line);
  }
}
.kinds h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}
.kinds p { color: var(--muted); max-width: 32ch; }

.surface-list {
  display: grid;
  gap: 0.15rem;
  margin-top: 0.25rem;
}
.surface-list a { width: fit-content; padding: 0.55rem 0; }