/* ═══════════════════════════════════════════════════════════════════════
   /blog — Syntrox.
   The landing's language (src/components/landing/lp.css): pitch black, one
   hue, square corners. Space Grotesk set tight for titles, two lines with
   the second quiet; JetBrains Mono, uppercase, .13em for every label and
   button; hairline plates instead of glass. Emphasis is brightness, never a
   second colour. Inter for reading — the article body keeps its type.
   Static page, no JavaScript — everything that moves is CSS, or CSS inside
   the per-post SVGs.
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  --void:    #000000;
  --deep:    #1d4ed8;
  --blue:    #3b82f6;
  --sky:     #93c5fd;
  --pale:    #dbeafe;
  --ink:     #f8fafc;
  --ink-dim: #cbd5e1;
  --ink-low: #94a3b8;   /* AA floor on --void */
  --line:        rgb(148 163 184 / 0.14);
  --line-strong: rgb(148 163 184 / 0.26);
  --e-out:   cubic-bezier(0.22, 1, 0.36, 1);
  --mono:    'JetBrains Mono', ui-monospace, monospace;
  --display: 'Space Grotesk', system-ui, sans-serif;
  --measure: 56ch;   /* ≈ 70 characters a line of Inter at body size (measured) */
  --wide:    1240px;
  --gutter:  clamp(16px, 4vw, 48px);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--void); }
body.b {
  margin: 0;
  background: var(--void);
  color: var(--ink);
  font: 400 1.0625rem/1.65 'Inter', system-ui, sans-serif;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
/* The ground, as the landing has it: a faint grid of squares rather than a
   colour wash, fading out down the page. Greyscale on purpose — the blue on
   this page belongs to the art and the things you can act on. */
body.b::before {
  content: ''; position: absolute; inset: 0 0 auto; height: 900px; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgb(148 163 184 / 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgb(148 163 184 / 0.05) 1px, transparent 1px);
  background-size: 15px 15px;
  -webkit-mask-image: radial-gradient(110% 70% at 50% 0%, #000 10%, transparent 75%);
          mask-image: radial-gradient(110% 70% at 50% 0%, #000 10%, transparent 75%);
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ── the voice of every label ────────────────────────────────────────── */
.b-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  margin: 0 0 18px;
  font: 500 11px/1.4 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--blue); text-decoration: none;
}
.b-eyebrow::before {
  content: ''; flex: none; width: 6px; height: 6px;
  background: var(--blue); box-shadow: 0 0 10px rgb(59 130 246 / 0.8);
}
.b-label {
  margin: 0 0 14px;
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-low);
}
.b-meta {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 0;
  font: 400 11.5px/1.4 var(--mono);
  letter-spacing: 0.06em; color: var(--ink-low);
}

/* ── buttons ─────────────────────────────────────────────────────────
   The landing's, exactly: square, mono, uppercase. The hover is a stepped
   wipe — the fill arrives as hard-edged bands on the grid's rhythm — and
   registration ticks draw in at the corners. */
.b-btn {
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 20px; border: 1px solid transparent; border-radius: 0;
  font: 500 11.5px/1 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase;
  text-decoration: none; cursor: pointer;
  transition: color .22s ease, border-color .22s ease, background-color .22s ease;
}
.b-btn::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background-image: repeating-linear-gradient(90deg, currentColor 0 4px, transparent 4px 5px);
  transform: scaleX(0); transform-origin: left;
  transition: transform .34s var(--e-out);
}
.b-btn:hover::after { transform: scaleX(1); }
.b-btn::before {
  content: ''; position: absolute; inset: 3px; z-index: -1;
  border: 1px solid currentColor; opacity: 0;
  clip-path: polygon(0 0, 7px 0, 7px 1px, 1px 1px, 1px 7px, 0 7px,
                     0 100%, 7px 100%, 7px calc(100% - 1px), 1px calc(100% - 1px), 1px calc(100% - 7px), 0 calc(100% - 7px),
                     100% 100%, calc(100% - 7px) 100%, calc(100% - 7px) calc(100% - 1px), calc(100% - 1px) calc(100% - 1px), calc(100% - 1px) calc(100% - 7px), 100% calc(100% - 7px),
                     100% 0, calc(100% - 7px) 0, calc(100% - 7px) 1px, calc(100% - 1px) 1px, calc(100% - 1px) 7px, 100% 7px);
  transition: opacity .2s ease .08s;
}
.b-btn:hover::before { opacity: .5; }
.b-btn:active { transform: translateY(1px); }
.b-arrow { width: 13px; height: 13px; flex: none; transition: transform .22s var(--e-out); }
.b-btn:hover .b-arrow { transform: translateX(4px); }

.b-btn--solid { background: var(--ink); color: #000; }
.b-btn--solid::after { background-color: var(--blue); color: rgb(255 255 255 / 0.22); }
.b-btn--solid:hover { color: #fff; }

.b-btn--ghost { border-color: var(--line-strong); color: var(--ink-dim); background: transparent; }
.b-btn--ghost::after { background-color: rgb(59 130 246 / 0.16); color: rgb(147 197 253 / 0.2); }
.b-btn--ghost:hover { color: var(--ink); border-color: var(--blue); }

.b-btn--sm { padding: 10px 14px; font-size: 10.5px; gap: 8px; }
/* the section you are in */
.b-dot { display: none; }
.b-btn.is-here { color: var(--ink); border-color: rgb(59 130 246 / 0.55); }
.b-btn.is-here .b-dot {
  display: block; flex: none; width: 5px; height: 5px;
  background: var(--blue); box-shadow: 0 0 8px rgb(59 130 246 / 0.9);
}

/* ── chrome ──────────────────────────────────────────────────────────── */
.b-chrome { position: relative; z-index: 30; border-bottom: 1px solid var(--line); }
.b-chrome-in {
  max-width: var(--wide); margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.b-mark { display: inline-flex; align-items: center; text-decoration: none; }
.b-nav { display: flex; gap: 8px; }

/* ── index ───────────────────────────────────────────────────────────── */
.bi-hero {
  max-width: var(--wide); margin: 0 auto;
  padding: clamp(32px, 5vw, 64px) var(--gutter) clamp(28px, 3.6vw, 44px);
}
.bi-h {
  margin: 0; max-width: 17ch;
  font: 500 clamp(2.25rem, 5.4vw, 4.25rem)/1.0 var(--display);
  letter-spacing: -0.035em; color: var(--ink);
  text-wrap: balance;
}
.bi-h span, .bp-h span, .bc-h span, .b-cta-line span { color: var(--ink-low); }
.bi-h span { display: block; }
.bi-lede {
  margin: 20px 0 0; max-width: 62ch;
  font-size: clamp(0.95rem, 1.2vw, 1.0625rem); line-height: 1.62; color: var(--ink-dim);
}

.bi-list {
  max-width: var(--wide); margin: 0 auto;
  padding: 0 var(--gutter) 120px;
  display: grid; gap: 16px;
}
.bi-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
}
.bi-empty {
  margin: 0; padding: 48px 0;
  font: 500 11px/1.4 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-low);
}

/* ── the article card: a plate with the post's own art behind it ─────── */
.bc {
  position: relative; isolation: isolate; overflow: hidden;
  display: flex; flex-direction: column; gap: 14px;
  --band: 124px;   /* the lit strip of art above the copy */
  min-height: 300px;
  padding: var(--band) 24px 22px;
  border: 1px solid var(--line);
  background: var(--void);
  color: var(--ink); text-decoration: none;
  transition: border-color .3s var(--e-out);
}
/* THE ART. One generated SVG per post, keyed off its slug, moving inside
   itself — packets hop along the traces, a pulse runs out through the
   rings. It lights a band across the top of the plate, framed on the post's
   own mark, and fades out into the copy, so the words always sit on black:
   a texture the title rises out of, never a picture behind the reading. */
/* The crop is computed, not left to cover: the art is drawn at a fixed
   width (--aw) and offset so the post's mark — at --fxn, --fyn of the
   picture — lands --mx from the plate's right edge and --my from its top,
   inside the lit band, on every card width. */
.bc-art {
  --aw: 680px; --my: calc(var(--band) * 0.5);
  position: absolute; inset: 0 0 auto; height: calc(var(--band) + 70px); z-index: -2;
  background-image: var(--art);
  background-repeat: no-repeat;
  background-size: var(--aw) auto;
  background-position:
    right calc(var(--mx, 120px) - (1 - var(--fxn, .7)) * var(--aw))
    top calc(var(--my) - var(--fyn, .5) * var(--aw) * 0.525);
  opacity: 0.9;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 50%, transparent 100%);
          mask-image: linear-gradient(180deg, #000 0%, #000 50%, transparent 100%);
  transform-origin: var(--fx, 70%) 30%;
  transition: opacity .5s var(--e-out), transform .9s var(--e-out);
}
/* the scrim: clear over the band, near-black by the first line of copy */
.bc-scrim {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg,
    transparent 0, transparent calc(var(--band) - 64px),
    rgb(0 0 0 / 0.86) calc(var(--band) - 6px), #000 calc(var(--band) + 90px));
  transition: opacity .5s var(--e-out);
}
/* the hover: the plate lights its edge, a stepped rule draws across the
   top, the corner ticks come in, and the art comes up to full strength */
.bc::after {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background-image: repeating-linear-gradient(90deg, var(--blue) 0 4px, transparent 4px 5px);
  transform: scaleX(0); transform-origin: left;
  transition: transform .55s var(--e-out);
}
.bc-ticks {
  position: absolute; inset: 7px; pointer-events: none;
  border: 1px solid var(--sky); opacity: 0;
  clip-path: polygon(0 0, 10px 0, 10px 1px, 1px 1px, 1px 10px, 0 10px,
                     0 100%, 10px 100%, 10px calc(100% - 1px), 1px calc(100% - 1px), 1px calc(100% - 10px), 0 calc(100% - 10px),
                     100% 100%, calc(100% - 10px) 100%, calc(100% - 10px) calc(100% - 1px), calc(100% - 1px) calc(100% - 1px), calc(100% - 1px) calc(100% - 10px), 100% calc(100% - 10px),
                     100% 0, calc(100% - 10px) 0, calc(100% - 10px) 1px, calc(100% - 1px) 1px, calc(100% - 1px) 10px, 100% 10px);
  transition: opacity .25s ease .1s, inset .35s var(--e-out);
}
.bc:hover, .bc:focus-visible { border-color: rgb(59 130 246 / 0.5); }
.bc:hover::after, .bc:focus-visible::after { transform: scaleX(1); }
.bc:hover .bc-ticks, .bc:focus-visible .bc-ticks { opacity: .55; inset: 5px; }
.bc:hover .bc-art, .bc:focus-visible .bc-art { opacity: 1; transform: scale(1.06); }

.bc-h {
  margin: 0;
  font: 500 1.35rem/1.16 var(--display);
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.bc-x {
  margin: 0; color: var(--ink-dim); font-size: 0.95rem; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden;
}
.bc-go {
  margin-top: auto;
  display: inline-flex; gap: 10px; align-items: center;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--blue);
  transition: color .22s ease;
}
.bc:hover .bc-go { color: var(--sky); }
.bc:hover .bc-go .b-arrow { transform: translateX(4px); }

.bc--lead { --band: 156px; min-height: 420px; padding: var(--band) clamp(26px, 3.6vw, 44px) clamp(26px, 3.6vw, 44px); gap: 18px; }
.bc--lead .bc-h { font-size: clamp(1.75rem, 3.3vw, 2.75rem); line-height: 1.04; letter-spacing: -0.035em; }
.bc--lead .bc-x { max-width: 62ch; font-size: 1.05rem; line-height: 1.65; -webkit-line-clamp: 5; }
.bc--lead .bc-art { --aw: 1200px; --mx: 300px; }

/* the split lead: the text on the left, the article's shape on a screen to the right */
.bc--split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  column-gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.bc-text { display: flex; flex-direction: column; gap: 18px; min-width: 0; height: 100%; }

/* The screen sits on its own solid ground. It is small text, and small text
   on a field of squares was hard to read — the art shows around it, never
   through it. */
.bc-screen {
  position: relative;
  padding: 20px 22px;
  background: rgb(0 0 0 / 0.94);
  border: 1px solid var(--line);
}
.bc-screen-h {
  margin: 0 0 16px;
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-low);
}
.bc-screen ol { list-style: none; margin: 0; padding: 0; counter-reset: sec; display: grid; gap: 12px; }
.bc-screen li {
  counter-increment: sec;
  display: grid; grid-template-columns: 2.4em minmax(0, 1fr); row-gap: 7px; align-items: start;
}
.bc-screen li::before {
  content: counter(sec, decimal-leading-zero); grid-row: span 2;
  font: 400 11px/1.7 var(--mono); color: var(--blue);
}
.bc-o-t {
  font-size: 0.88rem; line-height: 1.35; color: var(--ink-dim);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
/* the span: starts where the section starts, as long as its share of the text */
.bc-o-bar {
  grid-column: 2; position: relative;
  height: 3px;
  background: rgb(148 163 184 / 0.12);
}
.bc-o-bar::after {
  content: ''; position: absolute; top: 0; bottom: 0;
  left: var(--s); width: max(var(--l), 3px);
  background: var(--blue);
  transform: scaleX(0); transform-origin: left;
  animation: bc-span .7s var(--e-out) both;
}
.bc-screen li:nth-child(2) .bc-o-bar::after { animation-delay: .06s; }
.bc-screen li:nth-child(3) .bc-o-bar::after { animation-delay: .12s; }
.bc-screen li:nth-child(4) .bc-o-bar::after { animation-delay: .18s; }
.bc-screen li:nth-child(5) .bc-o-bar::after { animation-delay: .24s; }
.bc-screen li:nth-child(6) .bc-o-bar::after { animation-delay: .30s; }
.bc-screen li:nth-child(7) .bc-o-bar::after { animation-delay: .36s; }
.bc-screen li:nth-child(8) .bc-o-bar::after { animation-delay: .42s; }
@keyframes bc-span { to { transform: scaleX(1); } }
.bc:hover .bc-o-bar::after { background: var(--sky); box-shadow: 0 0 10px rgb(59 130 246 / 0.6); }
.bc-o-more {
  margin: 14px 0 0 2.4em;
  font: 400 11px/1.4 var(--mono); color: var(--ink-low);
}

/* no room for two columns: the text alone, as on any other card */
@media (max-width: 900px) {
  .bc--split { display: flex; }
  .bc-screen { display: none; }
  .bc--lead { min-height: 360px; }
  /* without the screen beside it, the lead is framed like any other card */
  .bc--lead .bc-art { --aw: 760px; --mx: inherit; }
}

/* ── post ────────────────────────────────────────────────────────────── */
.bp-hero {
  position: relative; isolation: isolate;
  padding: clamp(28px, 4.4vw, 56px) var(--gutter) 0;
}
/* the post's own art, the same picture its card carries, as a band behind
   the title. It is masked away from the reading column and fades out before
   the text starts, so it frames the title rather than sitting under it. */
.bp-art {
  position: absolute; inset: 0 0 auto; height: min(520px, 100%); z-index: -1;
  background: var(--art) center / cover no-repeat;
  opacity: 0.55;
  -webkit-mask-image:
    linear-gradient(180deg, #000 0%, rgb(0 0 0 / 0.6) 55%, transparent 100%),
    linear-gradient(90deg, #000 0%, rgb(0 0 0 / 0.14) 30%, rgb(0 0 0 / 0.14) 70%, #000 100%);
  -webkit-mask-composite: source-in;
          mask-image:
    linear-gradient(180deg, #000 0%, rgb(0 0 0 / 0.6) 55%, transparent 100%),
    linear-gradient(90deg, #000 0%, rgb(0 0 0 / 0.14) 30%, rgb(0 0 0 / 0.14) 70%, #000 100%);
          mask-composite: intersect;
}
.bp-hero-in {
  position: relative;
  max-width: min(var(--measure), 100%); margin: 0 auto;
  display: grid; gap: 18px;
}
.bp-hero .b-eyebrow { margin: 0; justify-self: start; }
.b-back { transition: color .2s ease; }
.b-back:hover { color: var(--sky); }
.bp-h {
  margin: 0;
  font: 500 clamp(2rem, 4.4vw, 3.15rem)/1.04 var(--display);
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.bp-lede {
  margin: 6px 0 0; padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 1.16rem; line-height: 1.6; color: var(--ink-dim);
}

/* the reading column, with the contents list pinned in the right margin when
   there is room for it. The text column never moves: the side columns are
   equal, so it stays centred under the title whether or not a TOC exists. */
.bp-layout {
  display: grid;
  grid-template-columns: 1fr min(var(--measure), 100%) 1fr;
  column-gap: 48px;
  padding: 0 var(--gutter);
}
.bp-main { grid-column: 2; min-width: 0; }

.bp-toc--side { grid-column: 3; grid-row: 1; justify-self: start; width: min(240px, 100%); }
.bp-toc--side nav {
  position: sticky; top: 32px; padding-top: 28px;
  /* a long contents list scrolls inside itself rather than running off-screen */
  max-height: calc(100vh - 64px); overflow-y: auto; overscroll-behavior: contain;
  scrollbar-width: thin; scrollbar-color: rgb(148 163 184 / 0.2) transparent;
}
.bp-toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.bp-toc li { counter-increment: toc; }
.bp-toc a {
  display: grid; grid-template-columns: 2.2em 1fr;
  padding: 6px 0; font-size: 0.82rem; line-height: 1.4;
  color: var(--ink-low); text-decoration: none;
  transition: color 200ms var(--e-out);
}
.bp-toc a::before {
  content: counter(toc, decimal-leading-zero);
  font: 400 11px/1.9 var(--mono); color: var(--blue);
}
.bp-toc a:hover { color: var(--ink); }

.bp-toc--inline {
  display: none;
  margin: 28px 0 0;
  border: 1px solid var(--line);
  background: var(--void);
}
.bp-toc--inline summary {
  cursor: pointer; list-style: none;
  padding: 14px 18px;
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-dim);
}
.bp-toc--inline summary::-webkit-details-marker { display: none; }
.bp-toc--inline summary::after { content: '+'; float: right; letter-spacing: 0; color: var(--blue); }
.bp-toc--inline[open] summary::after { content: '−'; }
.bp-toc--inline nav { padding: 0 18px 12px; border-top: 1px solid var(--line); }

@media (max-width: 1180px) {
  .bp-layout { grid-template-columns: minmax(0, var(--measure)); justify-content: center; }
  .bp-main { grid-column: 1; }
  .bp-toc--side { display: none; }
  .bp-toc--inline { display: block; }
}

/* the article body — its type is unchanged; only its accents moved to the
   one hue and its boxes lost their corners */
.bp-body { color: var(--ink-dim); }
.bp-body > :first-child { margin-top: 24px; }
.bp-body h2, .bp-faq > h2 {
  margin: 2.4em 0 0.6em;
  font: 600 1.6rem/1.2 var(--display);
  letter-spacing: -0.015em; color: var(--ink);
  scroll-margin-top: 24px;
}
.bp-body h3 {
  margin: 1.8em 0 0.5em;
  font: 600 1.2rem/1.3 var(--display); color: var(--ink);
}
.bp-body p, .bp-body ul, .bp-body ol { margin: 0 0 1.15em; }
.bp-body li { margin: 0.35em 0; padding-left: 0.2em; }
.bp-body li::marker { color: var(--blue); }
.bp-body strong { color: var(--ink); font-weight: 600; }
.bp-body a, .bp-faq a {
  color: var(--ink); text-decoration: underline;
  text-decoration-color: rgb(59 130 246 / 0.6); text-underline-offset: 3px;
  transition: text-decoration-color 200ms;
}
.bp-body a:hover, .bp-faq a:hover { text-decoration-color: var(--sky); }
.bp-body code {
  font: 0.88em var(--mono);
  padding: 0.1em 0.4em;
  background: rgb(59 130 246 / 0.12); color: var(--ink);
}
.bp-body blockquote {
  margin: 1.4em 0; padding: 4px 0 4px 20px;
  border-left: 2px solid var(--blue); color: var(--ink);
}
.bp-body hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }

.bp-table {
  margin: 1.6em 0; overflow-x: auto;
  border: 1px solid var(--line);
  background: rgb(148 163 184 / 0.03);
}
.bp-table table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.bp-table th, .bp-table td { padding: 12px 16px; text-align: left; vertical-align: top; }
.bp-table th {
  font: 500 10.5px/1.4 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--blue);
  border-bottom: 1px solid var(--line);
}
.bp-table td + td, .bp-table th + th { border-left: 1px solid var(--line); }
.bp-table tr + tr td { border-top: 1px solid var(--line); }

/* phones: each row becomes a labelled plate, so no column is ever squeezed
   to a word per line and nothing scrolls sideways */
@media (max-width: 640px) {
  .bp-table { overflow: visible; background: none; border: 0; }
  .bp-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .bp-table tr {
    display: block; margin: 0 0 10px; padding: 6px 0;
    border: 1px solid var(--line);
    background: rgb(148 163 184 / 0.03);
  }
  .bp-table td { display: block; padding: 8px 16px; border: 0 !important; }
  .bp-table td::before {
    content: attr(data-label); display: block; margin-bottom: 2px;
    font: 500 10px/1.4 var(--mono);
    letter-spacing: 0.13em; text-transform: uppercase; color: var(--blue);
  }
}

/* FAQ: the landing's points grid — plates divided by hairlines */
.bp-faq { padding-bottom: 24px; }
.bp-faq-list {
  display: grid; gap: 1px;
  background: var(--line); border: 1px solid var(--line);
}
.bp-q { background: var(--void); padding: 22px 24px 8px; color: var(--ink-dim); }
.bp-q h3 {
  margin: 0 0 10px;
  font: 500 1.08rem/1.35 var(--display); letter-spacing: -0.01em; color: var(--ink);
}
.bp-q p { margin: 0 0 16px; }

.bp-more {
  max-width: var(--wide); margin: 0 auto;
  padding: 0 var(--gutter) 120px;
}
.bp-more .b-eyebrow { margin-bottom: 22px; }

/* ── the call to action: one plate, after every post ─────────────────── */
.bp-after {
  max-width: var(--wide); margin: 88px auto 96px;
  padding: 0 var(--gutter);
}
.b-cta {
  position: relative; isolation: isolate; overflow: hidden;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 24px 40px;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--line);
  background: var(--void);
}
.b-cta .bc-art { --aw: 900px; --mx: 150px; --my: 90px; inset: 0; height: auto; opacity: 0.85; -webkit-mask-image: none; mask-image: none; }
.b-cta .bc-scrim { background: linear-gradient(90deg, rgb(0 0 0 / 0.92) 0%, rgb(0 0 0 / 0.82) 50%, rgb(0 0 0 / 0.35) 100%); }
.b-cta-line {
  margin: 0; flex: 1 1 380px; max-width: 30ch;
  font: 500 clamp(1.45rem, 2.6vw, 2rem)/1.08 var(--display);
  letter-spacing: -0.03em; text-wrap: balance;
}
.b-cta-line span { display: block; }

/* ── footer ──────────────────────────────────────────────────────────── */
.b-foot { border-top: 1px solid var(--line); }
.b-foot-in { max-width: var(--wide); margin: 0 auto; padding: 0 var(--gutter); }
.b-foot-top {
  display: flex; flex-wrap: wrap; align-items: center; gap: 18px 32px;
  padding: 36px 0;
}
.b-foot-top p { margin: 0; flex: 1 1 260px; color: var(--ink-low); font-size: 0.9rem; }
.b-foot nav { display: flex; flex-wrap: wrap; gap: 10px 24px; }
.b-foot nav a {
  color: var(--ink-dim); text-decoration: none;
  font: 500 10.5px/1 var(--mono); letter-spacing: 0.13em; text-transform: uppercase;
  transition: color .15s ease;
}
.b-foot nav a:hover { color: var(--ink); }
.b-foot-bar {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px;
  padding: 20px 0 28px; border-top: 1px solid var(--line);
  font: 400 11.5px/1.5 var(--mono); color: var(--ink-low);
}

/* phones: the text runs edge to edge, so the hero's art keeps to the top */
@media (max-width: 720px) {
  .bp-art { height: 260px; opacity: 0.4; }
}
@media (max-width: 560px) {
  .bc { --band: 112px; padding: var(--band) 18px 18px; min-height: 280px; }
  .bc--lead { --band: 124px; }
  .b-cta { padding: 24px 20px; }
}
@media (max-width: 360px) {
  .b-mark { transform: scale(.88); transform-origin: left center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .bc:hover .bc-art { transform: none; }
}

/* ── the wordmark footer, same as the landing's ───────────────────────
   Drawn by /blog/footer.js, the only script this site ships. Decorative:
   if it never loads, the footer below is complete on its own. */
.b-ascii-wrap {
  padding-block: clamp(42px, 6vw, 72px) clamp(26px, 3vw, 40px);
  border-bottom: 1px solid var(--line);
}
.b-ascii { display: block; width: 100%; height: 232px; cursor: crosshair; }
@media (max-width: 720px) { .b-ascii { height: 150px; } }

/* The wordmark (render.jsx, Wordmark): the landing's lockup, with the O as a
   hexagon on screen and as a letter in the text. */
.b-wm { display: inline-flex; align-items: baseline; user-select: none; color: #ffffff; }
/* inline, not inline-flex: flex items are separate blocks in the rendered text, which split the name into "SYNTR O X" */
.b-wm-name { display: inline; white-space: nowrap; font-family: "Space Grotesk", sans-serif; font-weight: 600; letter-spacing: -0.025em; line-height: 1; }
.b-wm-o { display: inline-block; width: 0.75em; height: 0.75em; vertical-align: -0.05em; margin: 0 0.01em; }
.b-wm-tld { font-family: "JetBrains Mono", monospace; font-weight: 400; line-height: 1; }
/* the O the hexagon stands for: in the text, zero size on screen */
.b-wm-o-txt { font-size: 0; line-height: 0; }