/* ==========================================================================
   ngx-sharp — marketing site
   Aesthetic: engineering datasheet. Bone paper, ink hairlines, one signal red.
   Type: Archivo (display/UI) · Newsreader (body serif) · Martian Mono (labels)
   ========================================================================== */

:root {
  /* ground */
  --paper:      #ece7dc;
  --paper-hi:   #f4f0e7;
  --paper-lo:   #e0d9cb;
  --void:       #0d0e0c;
  --void-hi:    #161815;

  /* ink */
  --ink:        #141511;
  --ink-2:      #3c3e37;
  --ink-3:      #6d6f66;
  --ink-4:      #9a9b91;

  /* inverted ink */
  --sheet:      #ece7dc;
  --sheet-2:    #a8a79c;
  --sheet-3:    #74736a;

  /* signal */
  --signal:     #cf3411;
  --signal-hi:  #ef5326;
  --jade:       #16594a;
  --jade-hi:    #3f9c85;

  /* structure */
  --rule:       color-mix(in srgb, var(--ink) 15%, transparent);
  --rule-soft:  color-mix(in srgb, var(--ink) 8%, transparent);
  --rule-inv:   color-mix(in srgb, var(--sheet) 16%, transparent);
  --rule-inv-s: color-mix(in srgb, var(--sheet) 8%, transparent);

  /* metrics */
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --maxw: 1360px;
  --nav-h: 62px;

  /* type */
  --display: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif:   "Newsreader", Georgia, "Times New Roman", serif;
  --mono:    "Martian Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

/* ---------- body ---------- */
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.62;
  font-variant-numeric: lining-nums tabular-nums;
  overflow-x: hidden;
}

/* paper grain */
body::after {
  content: "";
  position: fixed;
  inset: -20%;
  pointer-events: none;
  z-index: 9000;
  opacity: .5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.34'/%3E%3C/svg%3E");
}

::selection { background: var(--signal); color: var(--paper-hi); }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- layout primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.rule { height: 1px; background: var(--rule); border: 0; }

/* faint vertical column rules behind everything */
.gridlines {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.gridlines::before {
  content: "";
  display: block;
  height: 100%;
  background-image: repeating-linear-gradient(
    to right,
    var(--rule-soft) 0 1px,
    transparent 1px calc(100% / 6)
  );
}
@media (max-width: 860px) { .gridlines { display: none; } }

main, .site-nav, .site-foot { position: relative; z-index: 1; }

/* ---------- type ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.5;
  color: var(--ink-3);
  font-variation-settings: "wdth" 100;
}
.eyebrow .sig { color: var(--signal); }

h1, h2, h3, .h-like {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -.028em;
  line-height: .96;
  text-wrap: balance;
}

.sec-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.1rem;
  align-items: baseline;
  padding-block: 1rem 2.6rem;
}
.sec-head .no {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--signal);
  padding-top: .45rem;
}
.sec-head h2 {
  font-size: clamp(2rem, 5.2vw, 3.9rem);
  font-variation-settings: "wdth" 92;
}
.sec-head .lede {
  grid-column: 2;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  color: var(--ink-2);
  max-width: 60ch;
  margin-top: 1.1rem;
  text-wrap: pretty;
}

section { padding-block: clamp(4rem, 9vw, 8rem); }

/* ==========================================================================
   NAV
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 500;
  height: var(--nav-h);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--rule);
}
.site-nav .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.6rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.03em;
  font-variation-settings: "wdth" 88;
  white-space: nowrap;
}
.brand .glyph {
  display: grid;
  place-items: center;
  width: 23px; height: 23px;
  flex: none;
  background: var(--signal);
  transform: rotate(-4deg);
  transition: transform .35s var(--ease);
}
.brand .glyph svg { width: 100%; height: 100%; }
.brand:hover .glyph { transform: rotate(6deg) scale(1.06); }

.nav-links {
  display: flex;
  gap: clamp(.8rem, 2vw, 1.9rem);
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.nav-links a { position: relative; padding-block: .4rem; }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: .1rem;
  height: 1px; background: var(--signal);
  transition: right .3s var(--ease);
}
.nav-links a:hover::after { right: 0; }

.lang {
  display: flex;
  align-items: center;
  border: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .08em;
  margin-left: clamp(.5rem, 2vw, 1.4rem);
}
.lang a {
  padding: .32rem .5rem .3rem;
  color: var(--ink-3);
  transition: background .2s, color .2s;
}
.lang a:hover { color: var(--ink); background: var(--paper-lo); }
.lang a[aria-current="true"] { background: var(--ink); color: var(--paper-hi); }

.nav-cta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  padding: .48rem .8rem .44rem;
  white-space: nowrap;
  transition: background .22s var(--ease), color .22s var(--ease);
}
.nav-cta:hover { background: var(--ink); color: var(--paper-hi); }

@media (max-width: 1080px) {
  .nav-links { display: none; }
  .lang { margin-left: auto; }
}
@media (max-width: 460px) {
  .nav-cta { display: none; }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero { padding-block: clamp(3rem, 7vw, 6rem) clamp(2rem, 5vw, 4rem); }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: end;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  border: 1px solid var(--rule);
  border-left: 2px solid var(--signal);
  padding: .42rem .7rem .38rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}
.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--jade-hi);
  border-radius: 50%;
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--jade-hi) 60%, transparent);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--jade-hi) 55%, transparent); }
  70%  { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

h1.hero-title {
  font-size: clamp(2.5rem, 6.6vw, 5.3rem);
  font-weight: 800;
  font-variation-settings: "wdth" 86;
  line-height: .88;
  letter-spacing: -.04em;
}
h1.hero-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: normal;
  letter-spacing: -.02em;
  color: var(--signal);
  font-size: .93em;
}
.hero-sub {
  margin-top: clamp(1.4rem, 3vw, 2rem);
  font-size: clamp(1.02rem, 1.35vw, 1.22rem);
  color: var(--ink-2);
  max-width: 52ch;
  text-wrap: pretty;
}
.hero-sub strong { font-weight: 600; color: var(--ink); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: clamp(1.6rem, 3.4vw, 2.4rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .82rem 1.15rem .76rem;
  border: 1px solid var(--ink);
  position: relative;
  overflow: hidden;
  transition: color .28s var(--ease), border-color .28s var(--ease);
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: translateY(101%);
  transition: transform .34s var(--ease);
  z-index: -1;
}
.btn > * { position: relative; }
.btn:hover::before { transform: translateY(0); }
.btn:hover { color: var(--paper-hi); }
.btn.primary { background: var(--signal); border-color: var(--signal); color: var(--paper-hi); }
.btn.primary::before { background: var(--ink); }
.btn.primary:hover { border-color: var(--ink); }
.btn .arw { transition: transform .3s var(--ease); }
.btn:hover .arw { transform: translateX(4px); }

/* ---------- datapath figure ---------- */
.figure-datapath {
  border: 1px solid var(--ink);
  background:
    linear-gradient(var(--paper-hi), var(--paper-hi)),
    repeating-linear-gradient(45deg, var(--rule-soft) 0 1px, transparent 1px 7px);
  background-blend-mode: multiply;
  position: relative;
  padding: 1.1rem 1.1rem 0;
}
.figure-datapath figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-top: 1px solid var(--rule);
  padding: .7rem 0 .75rem;
  margin-top: .4rem;
}
.figure-datapath figcaption b { color: var(--signal); font-weight: 500; }

/* crop marks */
.crop::before, .crop::after {
  content: "";
  position: absolute;
  width: 9px; height: 9px;
  border: 1px solid var(--signal);
  pointer-events: none;
}
.crop::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.crop::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

/* SVG diagram internals */
.dp { width: 100%; height: auto; }
.dp .lbl {
  font-family: var(--mono);
  font-size: 8.4px;
  letter-spacing: .1em;
  fill: var(--ink-3);
  text-transform: uppercase;
}
.dp .lbl-b { fill: var(--ink); }
.dp .lbl-sig { fill: var(--signal); }
.dp .node-t {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  fill: var(--ink);
  letter-spacing: -.02em;
}
.dp .box { fill: none; stroke: var(--ink); stroke-width: 1; }
.dp .box-soft { fill: none; stroke: var(--rule); stroke-width: 1; }
.dp .core { fill: var(--ink); }
.dp .core-t { fill: var(--paper-hi); }
.dp .wire { stroke: var(--ink-4); stroke-width: 1; fill: none; }
.dp .wire-dash { stroke: var(--ink-4); stroke-width: 1; fill: none; stroke-dasharray: 3 4; }
.dp .wire-sig { stroke: var(--signal); stroke-width: 1.4; fill: none; }

.dp .lbl-l    { font-size: 7.3px; letter-spacing: .05em; }
.dp .lbl-code { font-size: 6.9px; letter-spacing: .02em; text-transform: none; }

.dp .pkt { fill: var(--ink); }
.dp .pkt-sig { fill: var(--signal); }
.dp .flow-a { animation: flowR 3.4s linear infinite; }
.dp .flow-b { animation: flowR 2.7s linear infinite; }
.dp .flow-c { animation: flowL 3.9s linear infinite; }
@keyframes flowR {
  0%   { transform: translateX(0);     opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { transform: translateX(var(--dx)); opacity: 0; }
}
@keyframes flowL {
  0%   { transform: translateX(var(--dx)); opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { transform: translateX(0); opacity: 0; }
}
.dp .sweep { animation: sweep 5.5s var(--ease) infinite; transform-origin: center; }
@keyframes sweep {
  0%, 100% { opacity: .05; }
  50%      { opacity: .17; }
}

/* ==========================================================================
   PROBLEM — the migration ledger
   ========================================================================== */
.ledger {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
}
.ledger li {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: 1.05rem 1.2rem 1.05rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 1.02rem;
  color: var(--ink-2);
  position: relative;
}
.ledger li:nth-child(2n) { padding-left: 1.4rem; border-left: 1px solid var(--rule); }
.ledger .k {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .1em;
  color: var(--ink-4);
  flex: none;
  min-width: 2.2em;
}
.ledger li .strike {
  position: absolute;
  left: 3.2em; right: 1.2rem;
  top: 50%;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .7s var(--ease);
}
.ledger li:nth-child(2n) .strike { left: 4.6em; }
.reveal.in .ledger li .strike { transform: scaleX(1); }
.ledger li:nth-child(1) .strike { transition-delay: .05s }
.ledger li:nth-child(2) .strike { transition-delay: .13s }
.ledger li:nth-child(3) .strike { transition-delay: .21s }
.ledger li:nth-child(4) .strike { transition-delay: .29s }
.ledger li:nth-child(5) .strike { transition-delay: .37s }
.ledger li:nth-child(6) .strike { transition-delay: .45s }
.ledger li:nth-child(7) .strike { transition-delay: .53s }
.ledger li:nth-child(8) .strike { transition-delay: .61s }

.ledger-note {
  margin-top: 2.2rem;
  padding-left: clamp(0px, 4vw, 3rem);
  border-left: 2px solid var(--signal);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--ink);
  max-width: 58ch;
}
@media (max-width: 780px) {
  .ledger { grid-template-columns: 1fr; }
  .ledger li:nth-child(2n) { padding-left: 0; border-left: 0; }
  .ledger li:nth-child(2n) .strike { left: 3.2em; }
}

/* ==========================================================================
   TABLES — datasheet style
   ========================================================================== */
.sheet {
  border-top: 1.5px solid var(--ink);
  font-family: var(--display);
  overflow-x: auto;
}
.sheet table { min-width: 640px; }
.sheet th, .sheet td {
  text-align: left;
  vertical-align: top;
  padding: .85rem 1.1rem .8rem 0;
  border-bottom: 1px solid var(--rule);
}
.sheet thead th {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 500;
  padding-block: .8rem;
  border-bottom: 1px solid var(--ink);
}
.sheet tbody th {
  font-weight: 600;
  font-size: .96rem;
  letter-spacing: -.01em;
  width: 32%;
}
.sheet td {
  font-size: .93rem;
  color: var(--ink-2);
  line-height: 1.5;
}
.sheet tbody tr { transition: background .2s; }
.sheet tbody tr:hover { background: color-mix(in srgb, var(--signal) 5%, transparent); }
.sheet td code, .sheet th code { font-family: var(--mono); font-size: .82em; }

.mark { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; white-space: nowrap; }
.mark.yes { color: var(--jade); }
.mark.yes::before { content: "▪ "; color: var(--jade-hi); }
.mark.no  { color: var(--ink-4); }
.mark.no::before  { content: "▫ "; }
.mark.pro { color: var(--signal); }
.mark.pro::before { content: "▴ "; }
.mark.mod { color: var(--ink-2); }
.mark.mod::before { content: "◧ "; color: var(--ink-4); }

/* ==========================================================================
   FEATURE DOSSIER
   ========================================================================== */
.dossier {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--rule);
}
.dossier article {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 1.5rem 1.5rem 1.7rem;
  position: relative;
  transition: background .3s var(--ease);
}
.dossier article::before {
  content: "";
  position: absolute;
  left: -1px; top: -1px; bottom: -1px;
  width: 2px;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .38s var(--ease);
}
.dossier article:hover { background: var(--paper-hi); }
.dossier article:hover::before { transform: scaleY(1); }
.dossier .fno {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  color: var(--signal);
  display: block;
  margin-bottom: .9rem;
}
.dossier h3 {
  font-size: 1.28rem;
  font-variation-settings: "wdth" 95;
  margin-bottom: .7rem;
  line-height: 1.08;
}
.dossier p {
  font-size: .96rem;
  color: var(--ink-2);
  margin-bottom: .9rem;
  text-wrap: pretty;
}
.dossier ul { display: grid; gap: .35rem; }
.dossier li {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .03em;
  line-height: 1.65;
  color: var(--ink-3);
  padding-left: .95rem;
  position: relative;
  font-variation-settings: "wdth" 90;
}
.dossier li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: 5px; height: 1px;
  background: var(--ink-4);
}

/* ==========================================================================
   PARTS LIST — dynamic modules
   ========================================================================== */
.parts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  border-top: 1.5px solid var(--ink);
  border-left: 1px solid var(--rule);
}
.parts li {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: .95rem 1.15rem 1.05rem;
  position: relative;
  transition: background .25s var(--ease);
}
.parts li::before {
  content: "";
  position: absolute;
  left: -1px; top: -1px; bottom: -1px;
  width: 2px;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform .3s var(--ease);
}
.parts li:hover { background: var(--paper-hi); }
.parts li:hover::before { transform: scaleY(1); }

.pn {
  display: block;
  font-family: var(--display);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -.015em;
  line-height: 1.2;
  color: var(--ink);
  text-wrap: balance;
}
.pd {
  display: block;
  margin-top: .3rem;
  font-size: .92rem;
  line-height: 1.45;
  color: var(--ink-2);
  text-wrap: pretty;
}

/* ==========================================================================
   INVERTED PANEL (HTTP/3 + evidence)
   ========================================================================== */
.invert {
  background: var(--void);
  color: var(--sheet);
  position: relative;
  overflow: hidden;
}
.invert::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(120% 80% at 82% 0%, color-mix(in srgb, var(--signal) 22%, transparent), transparent 62%),
    repeating-linear-gradient(to bottom, var(--rule-inv-s) 0 1px, transparent 1px 46px);
  pointer-events: none;
}
.invert > * { position: relative; }
.invert .sec-head h2 { color: var(--sheet); }
.invert .sec-head .no { color: var(--signal-hi); }
.invert .sec-head .lede { color: var(--sheet-2); }
.invert .eyebrow { color: var(--sheet-3); }
.invert .rule { background: var(--rule-inv); }

.h3-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.h3-points { display: grid; gap: 1.4rem; }
.h3-points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.1rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--rule-inv-s);
}
.h3-points .n {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--signal-hi);
  padding-top: .35rem;
}
.h3-points h4 {
  font-family: var(--display);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -.015em;
  margin-bottom: .3rem;
}
.h3-points p { color: var(--sheet-2); font-size: .96rem; }

.codecard {
  border: 1px solid var(--rule-inv);
  background: var(--void-hi);
  position: relative;
}
.codecard header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: .7rem .95rem .62rem;
  border-bottom: 1px solid var(--rule-inv);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--sheet-3);
}
.codecard header .tag { color: var(--signal-hi); }
.codecard pre {
  margin: 0;
  padding: 1.05rem .95rem 1.2rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.85;
  color: var(--sheet-2);
  font-variation-settings: "wdth" 88;
}
.codecard .d  { color: var(--sheet); }
.codecard .v  { color: var(--jade-hi); }
.codecard .c  { color: var(--sheet-3); font-style: italic; }
.codecard .hl { color: var(--signal-hi); }

@media (max-width: 900px) {
  .h3-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   COMPARE — tabs
   ========================================================================== */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2.4rem;
}
.tab {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .8rem 1.15rem .7rem;
  color: var(--ink-3);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .22s, border-color .22s, background .22s;
}
.tab:hover { color: var(--ink); background: var(--paper-hi); }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--signal); }
.tabpanel[hidden] { display: none; }

/* ==========================================================================
   HONESTY — where we are not the answer
   ========================================================================== */
.honesty {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink);
}
.honesty > div {
  padding: 1.9rem 1.9rem 2.1rem 0;
  border-bottom: 1px solid var(--rule);
}
.honesty > div + div {
  padding-left: clamp(1.2rem, 3vw, 2.4rem);
  border-left: 1px solid var(--rule);
}
.honesty h3 {
  font-size: 1.42rem;
  font-variation-settings: "wdth" 92;
  margin-bottom: .5rem;
}
.honesty .who {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: .8rem;
  display: block;
}
.honesty ul { margin-top: 1.1rem; display: grid; gap: .55rem; }
.honesty li {
  font-size: .95rem;
  color: var(--ink-2);
  padding-left: 1.2rem;
  position: relative;
}
.honesty li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--ink-4);
  font-family: var(--mono);
  font-size: 10px;
  top: .18em;
}
@media (max-width: 780px) {
  .honesty { grid-template-columns: 1fr; }
  .honesty > div + div { padding-left: 0; border-left: 0; }
}

/* ==========================================================================
   CLAIMS — what we say / what we don't
   ========================================================================== */
.claims {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.6rem, 4vw, 3.4rem);
}
.claims-col h3 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 500;
  padding-bottom: .9rem;
  border-bottom: 1px solid currentColor;
  margin-bottom: 1.3rem;
}
.claims-col.affirm h3 { color: var(--jade-hi); }
.claims-col.deny h3   { color: var(--signal-hi); }
.claims-col ul { display: grid; gap: .85rem; }
.claims-col li {
  font-size: .97rem;
  color: var(--sheet-2);
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.55;
}
.claims-col li::before {
  position: absolute;
  left: 0; top: -.06em;
  font-family: var(--mono);
  font-size: 12px;
}
.claims-col.affirm li::before { content: "✓"; color: var(--jade-hi); }
.claims-col.deny li::before   { content: "✕"; color: var(--signal-hi); }
@media (max-width: 720px) { .claims { grid-template-columns: 1fr; } }

/* ==========================================================================
   EVALUATION PATH
   ========================================================================== */
.path {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  border-left: 1px solid var(--rule);
  border-top: 1px solid var(--ink);
}
.path li {
  counter-increment: step;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 1.35rem 1.35rem 1.5rem;
  font-size: .96rem;
  color: var(--ink-2);
  position: relative;
  transition: background .25s;
}
.path li:hover { background: var(--paper-hi); }
.path li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--display);
  font-size: 1.6rem;
  font-weight: 700;
  font-variation-settings: "wdth" 82;
  color: var(--paper-lo);
  line-height: 1;
  margin-bottom: .7rem;
  transition: color .25s;
}
.path li:hover::before { color: var(--signal); }

/* ==========================================================================
   LICENSE STRIP
   ========================================================================== */
.license {
  border: 1px solid var(--ink);
  background: var(--paper-hi);
  padding: clamp(1.6rem, 4vw, 2.8rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .8fr);
  gap: clamp(1.5rem, 4vw, 3.4rem);
  align-items: center;
  position: relative;
}
.license h3 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-variation-settings: "wdth" 90;
  margin-bottom: .8rem;
}
.license p { color: var(--ink-2); font-size: 1rem; }
.license .kv {
  font-family: var(--mono);
  font-size: 10.5px;
  line-height: 1.9;
  color: var(--ink-3);
  border-left: 1px solid var(--rule);
  padding-left: clamp(1rem, 3vw, 2rem);
  font-variation-settings: "wdth" 88;
}
.license .kv b { color: var(--ink); font-weight: 500; }
@media (max-width: 820px) {
  .license { grid-template-columns: 1fr; }
  .license .kv { border-left: 0; border-top: 1px solid var(--rule); padding-left: 0; padding-top: 1.2rem; }
}

/* ==========================================================================
   CTA
   ========================================================================== */
.cta { text-align: center; padding-block: clamp(5rem, 11vw, 9rem); }
.cta h2 {
  font-size: clamp(2.4rem, 7.6vw, 6rem);
  font-variation-settings: "wdth" 84;
  font-weight: 800;
  letter-spacing: -.04em;
  color: var(--sheet);
  text-wrap: balance;
}
.cta h2 em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: normal;
  color: var(--signal-hi);
  letter-spacing: -.02em;
}
.cta p {
  color: var(--sheet-2);
  max-width: 54ch;
  margin: 1.4rem auto 0;
  font-size: 1.06rem;
}
.cta .hero-actions { justify-content: center; margin-top: 2.4rem; }
.invert .btn { border-color: var(--sheet); }
.invert .btn::before { background: var(--sheet); }
.invert .btn:hover { color: var(--void); }
.invert .btn.primary { background: var(--signal); border-color: var(--signal); color: #fff; }
.invert .btn.primary::before { background: var(--sheet); }
.invert .btn.primary:hover { color: var(--void); border-color: var(--sheet); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-foot {
  background: var(--void);
  color: var(--sheet-3);
  border-top: 1px solid var(--rule-inv);
  padding-block: 3rem 3.4rem;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .04em;
  line-height: 1.9;
  font-variation-settings: "wdth" 90;
}
.foot-top {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem 2.4rem;
  align-items: center;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--rule-inv-s);
}
.foot-top .brand { color: var(--sheet); font-family: var(--display); font-size: 16px; }
.foot-nav { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-left: auto; }
.foot-nav a:hover { color: var(--sheet); }
.disclaimer {
  margin-top: 1.6rem;
  max-width: 96ch;
  color: var(--sheet-3);
}
.disclaimer + .disclaimer { margin-top: .8rem; }

/* ==========================================================================
   REVEAL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   RESPONSIVE HERO
   ========================================================================== */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; align-items: start; }
  .figure-datapath { order: 2; }
}

/* Cyrillic tightening — Archivo runs wide in RU headlines */
html[lang="ru"] h1.hero-title { font-size: clamp(2.2rem, 5.6vw, 4.45rem); letter-spacing: -.035em; }
html[lang="ru"] .sec-head h2 { font-size: clamp(1.75rem, 4.2vw, 3.1rem); }
html[lang="ru"] .cta h2 { font-size: clamp(2rem, 6vw, 4.6rem); }
html[lang="ru"] .dossier h3 { font-size: 1.15rem; }
html[lang="ru"] .honesty h3 { font-size: 1.25rem; }
html[lang="ru"] .nav-links { font-size: 9.5px; letter-spacing: .06em; }
html[lang="ru"] .tab { letter-spacing: .08em; }
html[lang="ru"] .dossier li { font-size: 9.6px; }
html[lang="ru"] .license .kv { font-size: 9.8px; }
html[lang="ru"] .site-foot { font-size: 9.6px; }