/* ============================================================================
   FastPDLC — fastpdlc.com
   Neo-brutalist / pop-art design system.
   Ink outlines, hard zero-blur offset shadows, condensed black display type.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Anton&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ── tokens ──────────────────────────────────────────────────────────────── */
:root {
  --ink:      #191919;
  --paper:    #ffffff;
  --grid:     #e5e5e5;
  --muted:    #6b6b6b;

  --yellow:   #fbcc00;
  --green:    #00b67a;
  --orange:   #ff6b4a;
  --blue:     #4a90e2;
  --purple:   #b47cff;
  --pink:     #ff8fd0;
  --red:      #e5384f;
  --cream:    #fff9e6;

  --bd:        3px solid var(--ink);
  --bd-thin:   2px solid var(--ink);
  --r:         12px;
  --r-sm:      8px;

  --sh-xs:  1.5px 1.5px 0 var(--ink);
  --sh-sm:  2px 2px 0 var(--ink);
  --sh:     4px 4px 0 var(--ink);
  --sh-lg:  6px 6px 0 var(--ink);
  --sh-xl:  8px 8px 0 var(--ink);

  --display: 'Anton', 'Arial Narrow', Impact, sans-serif;
  --body:    'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono:    'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter:  clamp(1.25rem, 4vw, 3rem);
  --maxw:    1200px;
}

/* ── reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; -webkit-text-size-adjust: 100%; overflow-x: hidden; }

/* Grid and flex children default to min-width:auto, so a wide <pre> or a long
   unbroken token forces the track wider than its share and the page scrolls
   sideways. Every layout child here is allowed to shrink; the <pre> scrolls
   inside itself instead. */
.steps > *, .diags > *, .split > *, .stats > *, .timeline > *,
.hero-grid > *, .scaffold .wrap > *, .footer-grid > *, .tl > *,
.feature-list li > * { min-width: 0; }

body {
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  background-image: radial-gradient(var(--grid) 1.6px, transparent 1.6px);
  background-size: 26px 26px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; }

/* ── type ────────────────────────────────────────────────────────────────── */
h1, h2, h3, .display {
  font-family: var(--display);
  font-weight: 400;          /* Anton ships one weight; it reads as 900 */
  letter-spacing: 0.4px;
  line-height: 0.98;
  text-transform: none;
}

h1 { font-size: clamp(2.9rem, 7.4vw, 5.25rem); }
h2 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h3 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); letter-spacing: 0.3px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}

.lede { font-size: clamp(1.05rem, 1.7vw, 1.3rem); line-height: 1.55; color: #333; }
.muted { color: var(--muted); }

/* ── layout ──────────────────────────────────────────────────────────────── */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section-head { max-width: 46rem; margin-bottom: clamp(2.25rem, 5vw, 3.5rem); }
.section-head .eyebrow { margin-bottom: 0.9rem; display: inline-block; }
.section-head p { margin-top: 1.1rem; }

.band-ink { background: var(--ink); color: var(--paper); background-image: none; }
.band-ink .eyebrow, .band-ink h2 { color: var(--paper); }
.band-cream { background: var(--cream); background-image: radial-gradient(#efe3b8 1.6px, transparent 1.6px); background-size: 26px 26px; }

.rule { border: 0; border-top: var(--bd); }

/* ── buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.8rem 1.4rem;
  font-weight: 700; font-size: 1rem; letter-spacing: 0.4px;
  text-decoration: none; text-transform: uppercase;
  background: var(--paper); color: var(--ink);
  border: var(--bd); border-radius: 10px;
  box-shadow: var(--sh-sm);
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.12s ease;
  white-space: nowrap;
}
.btn:hover  { background: var(--cream); }
.btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--ink); }
.btn-primary { background: var(--yellow); box-shadow: var(--sh); }
.btn-primary:hover { background: #ffd726; }
.btn-primary:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--ink); }
.btn-lg { padding: 1rem 1.9rem; font-size: 1.08rem; box-shadow: var(--sh); }
.btn-lg:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--ink); }
.btn-ghost { background: transparent; color: var(--paper); border-color: var(--paper); box-shadow: 2px 2px 0 var(--paper); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }

/* ── badge (the marblism yellow role tag) ────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.28rem 0.7rem;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.2px;
  background: var(--yellow); color: var(--ink);
  border: var(--bd-thin); border-radius: 7px;
  box-shadow: var(--sh-xs);
  white-space: nowrap;
}

/* ── generic outlined card ───────────────────────────────────────────────── */
.card {
  background: var(--paper);
  border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh);
}

/* ── nav ─────────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: var(--paper);
  border-bottom: var(--bd);
}
.nav-inner { display: flex; align-items: center; gap: 1.5rem; height: 76px; }

.logo { position: relative; text-decoration: none; flex: none; }
.logo-mark {
  display: inline-block;
  font-family: var(--display); font-size: 1.4rem; letter-spacing: 0.6px;
  background: var(--ink); color: var(--paper);
  padding: 0.34rem 0.7rem 0.28rem;
  border-radius: var(--r); box-shadow: var(--sh-sm);
}
.logo::after {          /* speech-bubble tail */
  content: ''; position: absolute; left: 18px; bottom: -8px;
  border-left: 9px solid var(--ink);
  border-bottom: 10px solid transparent;
}

.nav-links { display: flex; gap: 1.6rem; margin-left: auto; align-items: center; }
.nav-links a {
  text-decoration: none; font-weight: 600; font-size: 0.92rem;
  letter-spacing: 0.3px; text-transform: uppercase;
  padding-bottom: 2px; border-bottom: 3px solid transparent;
}
.nav-links a:hover { border-bottom-color: var(--yellow); }
.nav-cta { margin-left: 0.4rem; }

.nav-toggle { display: none; }

/* ── hero ────────────────────────────────────────────────────────────────── */
.hero { padding-top: 0; padding-bottom: clamp(3.5rem, 7vw, 6rem); }

/* marquee of diagnostic chips, marblism's character-card rail */
.rail { overflow: hidden; padding-block: 1.6rem 2.4rem; border-bottom: 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.rail-track { display: flex; gap: 1.1rem; width: max-content; animation: slide 48s linear infinite; }
.rail:hover .rail-track { animation-play-state: paused; }
@keyframes slide { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.chip {
  position: relative; flex: none;
  width: 218px; height: 186px;
  padding: 0.9rem 0.9rem 1.4rem;
  background: var(--c, var(--blue));
  border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh);
  overflow: hidden;
}
.chip-code {
  display: block;
  font-family: var(--display); font-size: 2.5rem; line-height: 0.9;
  color: var(--c2, rgba(255,255,255,0.92));
  letter-spacing: 0.5px;
  -webkit-text-stroke: 1.5px var(--ink);
  paint-order: stroke fill;
}
.chip-line {
  display: block; margin-top: 0.65rem;
  font-family: var(--mono); font-size: 0.72rem; line-height: 1.45;
  background: var(--paper); color: var(--ink);
  border: var(--bd-thin); border-radius: var(--r-sm);
  padding: 0.45rem 0.55rem;
  box-shadow: var(--sh-xs);
  word-break: break-word;
}
.chip .badge { position: absolute; left: 0.85rem; bottom: -0.7rem; font-size: 0.74rem; }

/* hero body */
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
.hero h1 { font-size: clamp(2.7rem, 5.6vw, 4.35rem); max-width: 15ch; }
/* marker-pen highlight: a gradient band measured against the line box, so it
   sits across the lower third of the glyphs rather than under them */
.hero h1 .hl {
  white-space: nowrap;
  padding-inline: 0.08em;
  background-image: linear-gradient(
    transparent 52%, var(--yellow) 52%, var(--yellow) 88%, transparent 88%);
}
.hero-sub { margin-top: 1.5rem; max-width: 34rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; align-items: center; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 0.6rem 1.4rem; margin-top: 1.9rem; font-size: 0.9rem; font-weight: 600; }
.hero-meta span { display: inline-flex; align-items: center; gap: 0.45rem; }
.tick { width: 18px; height: 18px; flex: none; }

/* install / copy block */
.copy-block {
  display: flex; align-items: stretch; gap: 0;
  background: var(--paper); border: var(--bd); border-radius: 10px;
  box-shadow: var(--sh-sm); overflow: hidden; max-width: 26rem;
}
.copy-block code {
  font-family: var(--mono); font-size: 0.98rem; font-weight: 500;
  padding: 0.8rem 1rem;
  flex: 1 1 auto; min-width: 0;   /* let the long copier command scroll, not overflow */
  white-space: nowrap; overflow-x: auto;
  scrollbar-width: thin;
}
.copy-block code::before { content: '$ '; color: var(--muted); }
.copy-btn {
  flex: none; padding: 0 0.95rem; cursor: pointer;
  background: var(--yellow); border: 0; border-left: var(--bd);
  font-weight: 700; font-size: 0.82rem; letter-spacing: 0.6px; text-transform: uppercase;
}
.copy-btn:hover { background: #ffd726; }
.copy-btn[data-copied='true'] { background: var(--green); color: var(--paper); }

/* ── terminal ────────────────────────────────────────────────────────────── */
.term {
  background: var(--ink); color: #e8e8e8;
  border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh-xl);
  overflow: hidden;
}
.term-bar {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 0.9rem;
  background: #262626; border-bottom: var(--bd-thin);
}
.term-dot { width: 12px; height: 12px; border-radius: 50%; border: 1.5px solid var(--ink); }
.term-name { margin-left: 0.5rem; font-family: var(--mono); font-size: 0.76rem; color: #9a9a9a; }
.term-body { padding: 1.15rem 1.15rem 1.3rem; font-family: var(--mono); font-size: 0.815rem; line-height: 1.75; overflow-x: auto; }
.term-body .l { display: block; white-space: pre; }
.t-cmd  { color: var(--paper); }
.t-cmd::before { content: '$ '; color: var(--green); }
.t-err  { color: var(--orange); font-weight: 600; }
.t-warn { color: var(--yellow); font-weight: 600; }
.t-code { color: var(--yellow); }
.t-path { color: #8f8f8f; }
.t-ok   { color: var(--green); font-weight: 600; }
.t-dim  { color: #8f8f8f; }
.caret { display: inline-block; width: 9px; height: 1.05em; background: var(--green); vertical-align: -0.2em; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ── problem section ─────────────────────────────────────────────────────── */
.problem-stage { position: relative; display: grid; place-items: center; padding-block: clamp(1rem, 5vw, 3rem); min-height: 420px; }

.doc {
  position: absolute;
  width: min(340px, 74vw); padding: 1.4rem 1.5rem;
  background: var(--paper); border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh-lg);
}
.doc-1 { transform: rotate(-7deg) translate(-14%, 6%); box-shadow: var(--sh); }
.doc-2 { transform: rotate(5deg) translate(16%, -4%); box-shadow: var(--sh); }
.doc-3 { position: relative; transform: rotate(-1.5deg); z-index: 3; box-shadow: var(--sh-xl); }

.doc-title { font-family: var(--display); font-size: 1.15rem; letter-spacing: 0.3px; margin-bottom: 0.9rem; }
.doc-line { height: 9px; border-radius: 99px; background: var(--grid); margin-bottom: 0.6rem; }
.doc-line.w80 { width: 80%; } .doc-line.w60 { width: 60%; } .doc-line.w92 { width: 92%; } .doc-line.w45 { width: 45%; }
.doc-line.struck { position: relative; background: #ededed; }
.doc-line.struck::after { content: ''; position: absolute; inset: 50% -4px auto -4px; height: 2.5px; background: var(--red); transform: translateY(-50%) rotate(-0.6deg); }

.stamp {
  position: absolute; right: -18px; bottom: -18px;
  transform: rotate(-9deg);
  font-family: var(--display); font-size: 0.82rem; letter-spacing: 1px;
  padding: 0.4rem 0.7rem;
  color: var(--red); background: var(--paper);
  border: 3px solid var(--red); border-radius: var(--r-sm);
}

.bubble {
  position: absolute; z-index: 5;
  max-width: 17rem; padding: 0.75rem 1rem;
  font-weight: 600; font-size: 0.95rem; line-height: 1.35;
  background: var(--yellow); border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh);
}
.bubble::after {
  content: ''; position: absolute; bottom: -13px; left: 26px;
  border-top: 14px solid var(--ink); border-right: 16px solid transparent;
}
.bubble.pale { background: var(--paper); }
.bubble.b1 { top: 2%;  left: 0; }
.bubble.b2 { top: 18%; right: 0; }
.bubble.b3 { bottom: 12%; left: 2%; }
.bubble.b4 { bottom: 2%; right: 4%; }

/* ── steps (how it works) ────────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.step { display: flex; flex-direction: column; padding: 1.5rem; }
.step-n {
  font-family: var(--display); font-size: 2.6rem; line-height: 1;
  color: var(--paper); -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill;
  margin-bottom: 0.5rem;
}
.step h3 { margin-bottom: 0.5rem; }
.step p { font-size: 0.96rem; color: #3c3c3c; }
.step pre { margin-top: auto; }

pre {
  margin-top: 1.1rem;
  background: var(--ink); color: #e8e8e8;
  border: var(--bd-thin); border-radius: var(--r-sm);
  padding: 0.9rem 1rem;
  font-family: var(--mono); font-size: 0.775rem; line-height: 1.65;
  overflow-x: auto;
}
pre .k { color: var(--blue); }        /* key */
pre .s { color: var(--green); }       /* string */
pre .c { color: #7d7d7d; font-style: italic; }  /* comment */
pre .y { color: var(--yellow); }
pre .p { color: var(--purple); }
pre .o { color: var(--orange); }

/* ── diagnostics grid ────────────────────────────────────────────────────── */
.diags { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.diag {
  position: relative;
  padding: 1.4rem 1.4rem 2.1rem;
  background: var(--c, var(--blue));
  border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh-lg);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}
.diag:hover { transform: translate(-2px, -2px); box-shadow: var(--sh-xl); }
.diag-code {
  font-family: var(--display); font-size: clamp(2.2rem, 4vw, 3rem); line-height: 0.95;
  color: var(--c2, var(--paper));
  -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill;
}
.diag h3 { margin-top: 0.55rem; font-size: 1.15rem; }
.diag p { margin-top: 0.5rem; font-size: 0.93rem; font-weight: 500; }
.diag code.sample {
  display: block; margin-top: 0.9rem;
  font-family: var(--mono); font-size: 0.74rem; line-height: 1.5;
  background: var(--paper); border: var(--bd-thin); border-radius: var(--r-sm);
  padding: 0.5rem 0.6rem; box-shadow: var(--sh-xs);
  word-break: break-word;
}
.diag .badge { position: absolute; left: 1.3rem; bottom: -0.75rem; }
.diag-hero { grid-column: span 2; display: grid; grid-template-columns: 1fr 1fr; gap: 1.3rem; align-items: center; }
.diag-hero .diag-code { font-size: clamp(2.6rem, 5vw, 3.8rem); }

/* ── timeline ────────────────────────────────────────────────────────────── */
.timeline { display: grid; gap: 1.1rem; max-width: 60rem; }
.tl {
  display: grid; grid-template-columns: 6.5rem 1fr; gap: 1.4rem; align-items: start;
  padding: 1.3rem 1.5rem;
  background: #232323; border: 3px solid #3a3a3a; border-radius: var(--r);
}
.tl.hit { border-color: var(--orange); background: #2a1f1c; }
.tl.pass { border-color: var(--green); background: #1c2a25; }
.tl-time { font-family: var(--display); font-size: 1.5rem; color: var(--yellow); letter-spacing: 0.5px; }
.tl h3 { color: var(--paper); font-size: 1.2rem; }
.tl p { margin-top: 0.4rem; color: #b8b8b8; font-size: 0.96rem; }
.tl code { font-family: var(--mono); font-size: 0.86em; color: var(--yellow); }
.tl .tag {
  display: inline-block; margin-top: 0.7rem;
  font-family: var(--mono); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.06em;
  padding: 0.2rem 0.55rem; border-radius: 6px;
  background: var(--orange); color: var(--ink); border: 2px solid var(--ink);
}
.tl .tag.ok { background: var(--green); color: var(--paper); }

/* ── plugins ─────────────────────────────────────────────────────────────── */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(2rem, 4vw, 3.5rem); align-items: center; }
.feature-list { list-style: none; padding: 0; display: grid; gap: 1.1rem; margin-top: 1.8rem; }
.feature-list li { display: grid; grid-template-columns: 2.6rem 1fr; gap: 0.9rem; align-items: start; }
.feature-list .n {
  display: grid; place-items: center; width: 2.6rem; height: 2.6rem;
  font-family: var(--mono); font-weight: 600; font-size: 0.85rem;
  background: var(--paper); border: var(--bd); border-radius: var(--r-sm); box-shadow: var(--sh-xs);
}
.feature-list b { display: block; font-size: 1.02rem; }
.feature-list span { font-size: 0.95rem; color: #444; }

/* ── proof ───────────────────────────────────────────────────────────────── */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; margin-bottom: 2.2rem; }
.stat { padding: 1.4rem 1.3rem; background: var(--paper); border: var(--bd); border-radius: var(--r); box-shadow: var(--sh); }
.stat-n { font-family: var(--display); font-size: clamp(2.2rem, 4.6vw, 3.2rem); line-height: 1; }
.stat-l { margin-top: 0.5rem; font-size: 0.92rem; font-weight: 600; color: #444; }
.stat:nth-child(1) .stat-n { color: var(--orange); -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill; }
.stat:nth-child(2) .stat-n { color: var(--blue);   -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill; }
.stat:nth-child(3) .stat-n { color: var(--purple); -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill; }
.stat:nth-child(4) .stat-n { color: var(--green);  -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill; }

.proof-note { display: grid; grid-template-columns: auto 1fr; gap: 1.4rem; align-items: center; padding: 1.6rem 1.8rem; background: var(--ink); color: var(--paper); border-radius: var(--r); box-shadow: var(--sh-lg); }
.proof-note .badge { align-self: start; }
.proof-note p { font-size: 1.05rem; }
.proof-note strong { color: var(--yellow); }

/* ── scaffold band ───────────────────────────────────────────────────────── */
.scaffold { background: var(--yellow); border-block: var(--bd); background-image: none; }
.scaffold .wrap { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; padding-block: clamp(3rem, 6vw, 4.5rem); }
.scaffold h2 { max-width: 18ch; }
.scaffold p { margin-top: 0.9rem; max-width: 34rem; font-weight: 500; }
.scaffold .copy-block { max-width: none; background: var(--paper); box-shadow: var(--sh); }
.scaffold .copy-btn { background: var(--ink); color: var(--paper); }
.scaffold .copy-btn:hover { background: #333; }

/* ── faq ─────────────────────────────────────────────────────────────────── */
.faq { display: grid; gap: 1rem; max-width: 56rem; }
.faq details {
  background: var(--paper); border: var(--bd); border-radius: var(--r);
  box-shadow: var(--sh-sm); overflow: hidden;
}
.faq details[open] { box-shadow: var(--sh); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.1rem 1.3rem; cursor: pointer; list-style: none;
  font-family: var(--display); font-size: 1.12rem; letter-spacing: 0.3px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; flex: none;
  display: grid; place-items: center; width: 28px; height: 28px;
  font-family: var(--body); font-size: 1.3rem; font-weight: 700; line-height: 1;
  background: var(--yellow); border: var(--bd-thin); border-radius: 7px;
}
.faq details[open] summary::after { content: '–'; }
.faq .answer { padding: 0 1.3rem 1.3rem; font-size: 1rem; color: #333; }
.faq .answer code { font-family: var(--mono); font-size: 0.9em; background: var(--cream); border: 1px solid #e2d6a8; border-radius: 5px; padding: 0.05em 0.35em; }

/* ── final CTA + signup ──────────────────────────────────────────────────── */
.cta { text-align: center; }
.cta h2 { max-width: 20ch; margin-inline: auto; }
.cta .lede { max-width: 40rem; margin: 1.2rem auto 0; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.2rem; }

.signup { max-width: 34rem; margin: 2.8rem auto 0; }
.signup-row { display: flex; gap: 0.7rem; }
.signup input[type=email] {
  flex: 1; min-width: 0;
  font: inherit; font-size: 1rem;
  padding: 0.85rem 1rem;
  background: var(--paper); color: var(--ink);
  border: var(--bd); border-radius: 10px; box-shadow: var(--sh-sm);
}
.signup input[type=email]::placeholder { color: #8c8c8c; }
.signup input[type=email]:focus { outline: 3px solid var(--yellow); outline-offset: 2px; }
.signup .hint { margin-top: 0.8rem; font-size: 0.86rem; color: var(--muted); }
.signup .msg { margin-top: 0.9rem; font-weight: 600; font-size: 0.95rem; min-height: 1.4em; }
.signup .msg.ok  { color: var(--green); }
.signup .msg.err { color: var(--red); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ── footer ──────────────────────────────────────────────────────────────── */
.footer { background: var(--ink); color: #c9c9c9; background-image: none; border-top: var(--bd); }
.footer .wrap { padding-block: 3.5rem 2.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2.5rem; }
.footer h4 { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--yellow); margin-bottom: 0.9rem; }
.footer ul { list-style: none; padding: 0; display: grid; gap: 0.55rem; }
.footer a { color: #c9c9c9; text-decoration: none; font-size: 0.95rem; }
.footer a:hover { color: var(--yellow); }
.footer-blurb { font-size: 0.95rem; max-width: 26rem; margin-top: 1rem; }
.footer .logo-mark { background: var(--paper); color: var(--ink); }
.footer .logo::after { border-left-color: var(--paper); }
.footer-base { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; margin-top: 3rem; padding-top: 1.5rem; border-top: 2px solid #333; font-size: 0.88rem; }

/* ── motion / reveal ─────────────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rail-track { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .caret { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ── responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1040px) {
  .steps { grid-template-columns: 1fr; }
  .diags { grid-template-columns: repeat(2, 1fr); }
  .diag-hero { grid-column: span 2; grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .hero-grid, .split { grid-template-columns: 1fr; }
  .scaffold .wrap { grid-template-columns: 1fr; }
  .nav-links {
    position: fixed; inset: 76px 0 auto 0;
    display: none; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: var(--bd);
    padding: 0.5rem var(--gutter) 1.4rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.85rem 0; border-bottom: 2px solid var(--grid); }
  .nav-links a:hover { border-bottom-color: var(--yellow); }
  .nav-cta { margin: 1rem 0 0; justify-content: center; }
  .nav-toggle {
    display: grid; place-items: center; margin-left: auto;
    width: 46px; height: 42px; cursor: pointer;
    background: var(--yellow); border: var(--bd); border-radius: 10px; box-shadow: var(--sh-sm);
  }
  .nav-toggle span { display: block; width: 20px; height: 2.5px; background: var(--ink); box-shadow: 0 -6px 0 var(--ink), 0 6px 0 var(--ink); }
  .problem-stage { min-height: 0; display: grid; gap: 1.2rem; place-items: stretch; }
  .doc, .doc-1, .doc-2, .doc-3 { position: relative; transform: none; width: 100%; }
  .doc-1, .doc-2 { display: none; }
  .bubble { position: relative; inset: auto; max-width: none; }
  .bubble::after { display: none; }
  .tl { grid-template-columns: 1fr; gap: 0.4rem; }
}

@media (max-width: 620px) {
  .diags { grid-template-columns: 1fr; }
  .diag-hero { grid-column: span 1; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .signup-row { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}