/* ==========================================================================
   SECTION — Colors & Type
   Swiss/brutalist template library. Black, white, one red.
   ========================================================================== */

/* Google Fonts substitutions (flagged in README):
   - Inter Tight  -> substitute for Neue Haas Grotesk Display
   - Inter        -> substitute for Neue Haas Grotesk Text
   - JetBrains Mono -> mono spec
*/
@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* ---------- COLOR ---------- */
  /* Core */
  --black:        #000000;
  --white:        #ffffff;

  /* Neutrals (warm-cool neutral, 7-step) */
  --ink-950:      #0a0a0a;   /* near-black headings on off-white */
  --ink-900:      #141414;
  --ink-700:      #2e2e2e;   /* body on off-white, hover ink */
  --ink-500:      #6b6b6b;   /* secondary text, captions */
  --ink-300:      #b8b8b8;   /* disabled, dividers on dark */
  --ink-200:      #d9d9d9;   /* hairlines, borders */
  --ink-100:      #ebebeb;   /* subtle fills */
  --ink-50:       #f5f5f5;   /* canvas tint */
  --paper:        #fafaf7;   /* off-white canvas */

  /* Accent — the "small color note". Cadmium red. Use sparingly. */
  --red:          #ff3b00;
  --red-hover:    #e53500;
  --red-ink:      #b52900;   /* text on paper */

  /* Semantic FG / BG */
  --fg-1:         var(--black);     /* primary text */
  --fg-2:         var(--ink-700);   /* body */
  --fg-3:         var(--ink-500);   /* secondary / meta */
  --fg-4:         var(--ink-300);   /* disabled */
  --fg-inv:       var(--white);
  --fg-accent:    var(--red);

  --bg-1:         var(--white);     /* primary canvas */
  --bg-2:         var(--paper);     /* warm canvas */
  --bg-3:         var(--ink-50);    /* subtle fill */
  --bg-4:         var(--ink-100);   /* chip / input rest */
  --bg-inv:       var(--black);
  --bg-accent:    var(--red);

  --border-1:     var(--black);     /* hard 1px rules */
  --border-2:     var(--ink-200);   /* quiet divider */
  --border-inv:   var(--white);

  /* ---------- TYPE ---------- */
  --font-display: 'Inter Tight', 'Neue Haas Grotesk Display', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-sans:    'Inter', 'Neue Haas Grotesk Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Scale — large jumps for editorial hierarchy. Base 16px. */
  --fs-mono-xs:   11px;   /* meta labels, all-caps tags */
  --fs-mono-sm:   12px;
  --fs-xs:        12px;
  --fs-sm:        14px;
  --fs-base:      16px;
  --fs-md:        18px;
  --fs-lg:        22px;   /* lede */
  --fs-xl:        28px;   /* h4 */
  --fs-2xl:       40px;   /* h3 */
  --fs-3xl:       64px;   /* h2 */
  --fs-4xl:       96px;   /* h1 */
  --fs-5xl:       144px;  /* hero */
  --fs-6xl:       200px;  /* editorial hero */

  /* Line-heights */
  --lh-tight:     0.92;
  --lh-snug:      1.05;
  --lh-body:      1.5;
  --lh-loose:     1.65;

  /* Tracking */
  --tr-tight:     0;   /* display */
  --tr-snug:      0;   /* h3/h4 */
  --tr-normal:    0;
  --tr-wide:      0.08em;    /* all-caps meta */
  --tr-widest:    0.14em;    /* ticker / kicker */

  /* ---------- SPACING (4px base) ---------- */
  --s-0:  0;
  --s-1:  4px;
  --s-2:  8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  24px;
  --s-6:  32px;
  --s-7:  48px;
  --s-8:  64px;
  --s-9:  96px;
  --s-10: 128px;
  --s-11: 192px;

  /* ---------- GEOMETRY ---------- */
  --radius:       0;          /* NEVER round. */
  --hairline:     1px;
  --rule:         2px;
  --rule-heavy:   4px;

  /* No drop shadows. We use hard borders only. */
  --shadow-none:  none;
  --shadow-hard:  4px 4px 0 0 var(--black);  /* reserved for press-in card variant */

  /* Motion — instant or short. No bounce, no spring. */
  --dur-fast:     80ms;
  --dur-base:     140ms;
  --dur-slow:     240ms;
  --ease:         cubic-bezier(0.2, 0, 0, 1);   /* sharp out */
  --ease-linear:  linear;

  /* Layout */
  --container:    1440px;
  --gutter:       24px;
  --col:          12;
}

/* ==========================================================================
   Semantic element styles — drop into a page to get baseline type
   ========================================================================== */

html { font-family: var(--font-sans); color: var(--fg-1); background: var(--bg-1); }
body { font-size: var(--fs-base); line-height: var(--lh-body); -webkit-font-smoothing: antialiased; }

.h-hero, h1.hero {
  font-family: var(--font-display);
  font-size: var(--fs-5xl);
  line-height: var(--lh-tight);
  letter-spacing: var(--tr-tight);
  font-weight: 800;
  margin: 0;
}

h1, .h1 {
  font-family: var(--font-display);
  font-size: var(--fs-4xl);
  line-height: var(--lh-tight);
  letter-spacing: var(--tr-tight);
  font-weight: 800;
  margin: 0;
}

h2, .h2 {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  line-height: var(--lh-snug);
  letter-spacing: var(--tr-tight);
  font-weight: 700;
  margin: 0;
}

h3, .h3 {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: var(--lh-snug);
  letter-spacing: var(--tr-snug);
  font-weight: 700;
  margin: 0;
}

h4, .h4 {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  line-height: 1.15;
  letter-spacing: var(--tr-snug);
  font-weight: 600;
  margin: 0;
}

.lede {
  font-family: var(--font-sans);
  font-size: var(--fs-lg);
  line-height: 1.4;
  font-weight: 400;
  color: var(--fg-2);
}

p, .p { font-family: var(--font-sans); font-size: var(--fs-base); line-height: var(--lh-body); color: var(--fg-2); margin: 0; }
.p-sm { font-size: var(--fs-sm); line-height: var(--lh-body); color: var(--fg-2); }

.meta, .kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 500;
}

.ticker {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
}

code, .code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--bg-3);
  border: var(--hairline) solid var(--border-2);
  padding: 1px 5px;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--hairline) solid currentColor;
  transition: color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
a:hover { color: var(--red); border-bottom-color: var(--red); }

/* Selection */
::selection { background: var(--red); color: var(--white); }

/* Utility accents */
.accent-dot::after {
  content: "";
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--red);
  margin-left: 6px;
  vertical-align: middle;
}
.accent-underline {
  box-shadow: inset 0 -0.22em 0 var(--red);
}

/* ============================================================
     PAGE FOUNDATIONS
     ============================================================ */
  *, *::before, *::after { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; background: var(--bg-2); color: var(--fg-1); }
  body { font-family: var(--font-sans); overflow-x: hidden; }
  img, svg { display: block; max-width: 100%; }
  button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
  input { font: inherit; color: inherit; }

  /* Layout container */
  .wrap {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    position: relative;
  }

  /* Crosshair / registration mark — decorative + glyph */
  .crosshair {
    position: absolute;
    width: 16px; height: 16px;
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--fg-1);
    line-height: 1;
    pointer-events: none;
  }
  .crosshair::before { content: "+"; }
  .ch-tl { top: 16px; left: 16px; }
  .ch-tr { top: 16px; right: 16px; }
  .ch-bl { bottom: 16px; left: 16px; }
  .ch-br { bottom: 16px; right: 16px; }

  /* ============================================================
     TICKER (top marquee)
     ============================================================ */
  .ticker-bar {
    border-bottom: var(--hairline) solid var(--border-1);
    background: var(--black);
    color: var(--white);
    overflow: hidden;
  }
  .ticker-track {
    display: flex;
    white-space: nowrap;
    animation: ticker-scroll 60s linear infinite;
  }
  .ticker-group {
    display: flex;
    flex-shrink: 0;
  }
  .ticker-item {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-widest);
    text-transform: uppercase;
    padding: 8px 24px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
  }
  .ticker-item .dot {
    width: 6px; height: 6px; background: var(--red); display: inline-block;
  }
  @keyframes ticker-scroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
  }

  /* ============================================================
     TOP NAV
     ============================================================ */
  .nav {
    border-bottom: var(--hairline) solid var(--border-1);
    background: var(--bg-2);
    position: sticky; top: 0; z-index: 50;
  }
  .nav-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    height: 64px;
    gap: 32px;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    border: 0;
  }
  .brand-mark {
    width: 28px; height: 28px;
    background: var(--black);
    position: relative;
    flex-shrink: 0;
  }
  .brand-mark::before, .brand-mark::after {
    content: "";
    position: absolute;
    background: var(--white);
  }
  .brand-mark::before {
    left: 4px; right: 4px; top: 6px; height: 3px;
    box-shadow: 0 6px 0 var(--white), 0 12px 0 var(--white);
  }
  .brand-mark::after {
    width: 4px; height: 4px;
    background: var(--red);
    right: 3px; bottom: 3px;
  }
  .brand-word {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 18px;
    letter-spacing: 0;
    text-transform: uppercase;
  }
  .brand-word em {
    font-style: normal;
    font-weight: 400;
    color: var(--fg-3);
    margin-left: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: var(--tr-wide);
  }
  .nav-links {
    display: flex; gap: 32px;
    justify-content: center;
  }
  .nav-links a {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    border-bottom: 0;
    color: var(--fg-2);
  }
  .nav-links a:hover { color: var(--red); }
  .nav-cta {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    background: var(--black);
    color: var(--white);
    padding: 10px 16px;
    border: var(--hairline) solid var(--black);
    transition: background var(--dur-base) var(--ease), color var(--dur-base) var(--ease);
  }
  .nav-cta:hover { background: var(--red); border-color: var(--red); }

  /* ============================================================
     SECTION SHELL
     ============================================================ */
  section {
    padding: 96px 0;
    border-bottom: var(--hairline) solid var(--border-1);
    position: relative;
  }
  section.tight { padding: 64px 0; }
  section.dark { background: var(--black); color: var(--white); }
  section.dark .meta { color: var(--ink-300); }
  section.dark p { color: var(--ink-200); }

  .section-head {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: end;
    margin-bottom: 64px;
  }
  .section-head .kicker { display: block; margin-bottom: 16px; }
  .section-head h2 { letter-spacing: 0; }
  .section-head p { color: var(--fg-2); max-width: 52ch; }
  section.dark .section-head p { color: var(--ink-300); }

  /* ============================================================
     HERO
     ============================================================ */
  .hero {
    padding: 80px 0 64px;
    position: relative;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: start;
  }
  .hero-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: var(--rule) solid var(--border-1);
    padding-top: 16px;
    margin-bottom: 48px;
  }
  .hero-meta-left, .hero-meta-right {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
  }
  .hero-meta-right .dot {
    width: 6px; height: 6px; background: var(--red); display: inline-block; margin-right: 8px;
    animation: pulse 1.4s var(--ease) infinite;
  }
  @keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

  h1.hero-h {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(56px, 8.5vw, 128px);
    line-height: 0.92;
    letter-spacing: 0;
    margin: 0 0 32px;
    color: var(--fg-1);
  }
  h1.hero-h .accent {
    color: var(--red);
  }
  h1.hero-h .stroke {
    -webkit-text-stroke: 2px var(--fg-1);
    color: transparent;
  }
  .hero-sub {
    font-family: var(--font-sans);
    font-size: var(--fs-lg);
    line-height: 1.4;
    color: var(--fg-2);
    max-width: 48ch;
    margin: 0 0 40px;
  }

  /* email form */
  .signup {
    display: flex;
    border: var(--hairline) solid var(--border-1);
    background: var(--white);
    max-width: 560px;
  }
  .signup input {
    flex: 1;
    padding: 18px 20px;
    border: 0;
    background: transparent;
    font-size: var(--fs-base);
    outline: none;
    min-width: 0;
  }
  .signup input::placeholder { color: var(--fg-3); }
  .signup input:focus { box-shadow: inset 0 0 0 2px var(--black); }
  .signup button {
    background: var(--black);
    color: var(--white);
    padding: 0 28px;
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    transition: background var(--dur-base) var(--ease);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  .signup button:hover { background: var(--red); }
  .signup button .arrow { width: 14px; height: 1.5px; background: currentColor; position: relative; }
  .signup button .arrow::after {
    content: ""; position: absolute; right: -1px; top: -3px;
    width: 7px; height: 7px; border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor;
    transform: rotate(45deg);
  }
  .signup-note {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
    margin-top: 12px;
    display: flex; gap: 16px;
  }
  .signup-note .accent-dot { color: var(--red); }
  .signup.success {
    background: var(--bg-2);
    border-color: var(--red);
    padding: 18px 20px;
    display: block;
    color: var(--fg-1);
  }
  .signup.success .check {
    color: var(--red);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    margin-bottom: 6px;
  }

  /* Hero JSON preview */
  .hero-json {
    border: var(--hairline) solid var(--border-1);
    background: var(--black);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.7;
    overflow: hidden;
    position: relative;
  }
  .hero-json-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: var(--hairline) solid var(--ink-700);
    padding: 12px 16px;
    font-size: 10px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--ink-300);
  }
  .hero-json-head .filename { color: var(--white); }
  .hero-json-head .dot { width: 6px; height: 6px; background: var(--red); display: inline-block; margin-right: 8px; vertical-align: middle; }
  .hero-json-body { padding: 20px 24px; white-space: pre; overflow-x: auto; }
  .json-k { color: #fff; }
  .json-s { color: #ff8a66; }
  .json-n { color: #fff; }
  .json-c { color: var(--ink-500); font-style: normal; }
  .json-b { color: var(--ink-300); }

  .hero-json-foot {
    border-top: var(--hairline) solid var(--ink-700);
    padding: 10px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 10px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--ink-300);
  }
  .hero-json-foot .copy-btn {
    color: var(--white);
    border-bottom: var(--hairline) dotted var(--ink-300);
  }
  .hero-json-foot .copy-btn:hover { color: var(--red); border-color: var(--red); }

  /* hero meta stats below */
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 64px;
    border-top: var(--rule) solid var(--border-1);
    border-bottom: var(--hairline) solid var(--border-1);
  }
  .hero-stat {
    padding: 24px 24px 24px 0;
    border-right: var(--hairline) solid var(--border-1);
  }
  .hero-stat:last-child { border-right: 0; }
  .hero-stat .num {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
  }
  .hero-stat .num .unit {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--fg-3);
    margin-left: 4px;
    letter-spacing: var(--tr-wide);
  }
  .hero-stat .lbl {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
    margin-top: 8px;
  }

  /* ============================================================
     PROBLEM — big editorial type
     ============================================================ */
  .problem {
    background: var(--bg-2);
  }
  .problem-quote {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(40px, 5vw, 80px);
    line-height: 0.98;
    letter-spacing: 0;
    max-width: 22ch;
    margin: 0 0 64px;
  }
  .problem-quote .strike {
    text-decoration: line-through;
    text-decoration-thickness: 3px;
    text-decoration-color: var(--red);
    color: var(--fg-3);
  }
  .problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: var(--rule) solid var(--border-1);
  }
  .problem-cell {
    padding: 32px 24px 32px 0;
    border-right: var(--hairline) solid var(--border-1);
  }
  .problem-cell:nth-child(4n) { border-right: 0; padding-right: 0; }
  .problem-cell .num {
    font-family: var(--font-mono);
    font-size: var(--fs-mono-xs);
    letter-spacing: var(--tr-wide);
    color: var(--red);
    margin-bottom: 12px;
  }
  .problem-cell h4 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0;
    margin-bottom: 12px;
  }
  .problem-cell p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--fg-2);
  }

  /* ============================================================
     SOLUTION — split with diagram
     ============================================================ */
  .solution-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
  }
  .solution-copy h2 {
    font-size: clamp(40px, 5vw, 72px);
    letter-spacing: 0;
    line-height: 1;
    margin-bottom: 32px;
  }
  .solution-copy p {
    font-size: var(--fs-lg);
    line-height: 1.45;
    color: var(--fg-2);
    max-width: 48ch;
    margin-bottom: 32px;
  }
  .solution-copy .small {
    font-size: var(--fs-base);
    color: var(--fg-2);
    max-width: 48ch;
  }

  /* Scene diagram (orthographic) */
  .scene-frame {
    border: var(--hairline) solid var(--border-1);
    background: var(--white);
    position: relative;
    overflow: hidden;
  }
  .scene-head {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 16px;
    border-bottom: var(--hairline) solid var(--border-1);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
  }
  .scene-svg {
    width: 100%; height: 420px; display: block;
  }
  .scene-foot {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: var(--hairline) solid var(--border-1);
  }
  .scene-foot div {
    padding: 12px 16px;
    border-right: var(--hairline) solid var(--border-1);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
  }
  .scene-foot div:last-child { border-right: 0; }
  .scene-foot div b { color: var(--fg-1); font-weight: 500; }

  /* ============================================================
     HOW IT WORKS — numbered steps
     ============================================================ */
  .steps {
    background: var(--black);
    color: var(--white);
  }
  .steps .section-head h2 { color: var(--white); letter-spacing: 0; }
  .steps .section-head p { color: var(--ink-300); }
  .steps-list {
    display: grid;
    grid-template-columns: 1fr;
    border-top: var(--rule) solid var(--white);
  }
  .step {
    display: grid;
    grid-template-columns: 80px 1fr auto 280px;
    gap: 32px;
    padding: 32px 0;
    border-bottom: var(--hairline) solid var(--ink-700);
    align-items: center;
    transition: background var(--dur-base) var(--ease);
  }
  .step:hover { background: var(--ink-900); }
  .step:hover .title { color: var(--red); }
  .step .num {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: var(--tr-wide);
    color: var(--ink-300);
  }
  .step .title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.1;
    transition: color var(--dur-base) var(--ease);
  }
  .step .body {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--ink-300);
    max-width: 36ch;
    line-height: 1.5;
  }
  .step .preview {
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.6;
    color: var(--ink-300);
    border-left: var(--hairline) solid var(--ink-700);
    padding-left: 24px;
    white-space: pre;
  }
  .step .preview .k { color: var(--white); }
  .step .preview .v { color: #ff8a66; }

  /* ============================================================
     FEATURE GRID
     ============================================================ */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: var(--rule) solid var(--border-1);
    border-left: var(--hairline) solid var(--border-1);
  }
  .feature {
    border-right: var(--hairline) solid var(--border-1);
    border-bottom: var(--hairline) solid var(--border-1);
    padding: 32px;
    background: var(--bg-1);
    transition: background var(--dur-base) var(--ease);
    position: relative;
    min-height: 220px;
  }
  .feature:hover { background: var(--bg-2); }
  .feature .ix {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: var(--tr-wide);
    color: var(--fg-3);
    margin-bottom: 20px;
    display: flex; justify-content: space-between;
  }
  .feature .ix .tag {
    color: var(--red);
  }
  .feature h4 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.1;
    margin-bottom: 12px;
  }
  .feature p {
    font-size: 14px;
    color: var(--fg-2);
    line-height: 1.5;
    max-width: 32ch;
  }
  .feature .glyph {
    position: absolute;
    bottom: 24px; right: 24px;
    width: 32px; height: 32px;
    opacity: 0.6;
  }

  /* ============================================================
     WHO IT'S FOR — list, big right column type
     ============================================================ */
  .audience-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
  }
  .audience-list {
    border-top: var(--hairline) solid var(--border-1);
  }
  .audience-row {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: 24px;
    padding: 24px 0;
    border-bottom: var(--hairline) solid var(--border-1);
    align-items: baseline;
  }
  .audience-row .num {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: var(--tr-wide);
    color: var(--fg-3);
  }
  .audience-row .label {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 0;
  }
  .audience-row .tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
  }
  .audience-row:hover .label { color: var(--red); }
  .audience-aside {
    border: var(--hairline) solid var(--border-1);
    padding: 40px;
    background: var(--bg-1);
  }
  .audience-aside .quote-mark {
    color: var(--red);
    font-family: var(--font-display);
    font-size: 80px;
    line-height: 0.6;
    margin-bottom: 16px;
  }
  .audience-aside p {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: 0;
    color: var(--fg-1);
    margin-bottom: 24px;
  }
  .audience-aside .byline {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--fg-3);
  }

  /* ============================================================
     FINAL CTA
     ============================================================ */
  .final {
    text-align: center;
    padding: 128px 0;
    background: var(--bg-2);
    position: relative;
  }
  .final h2 {
    font-size: clamp(56px, 8vw, 144px);
    letter-spacing: 0;
    line-height: 0.92;
    margin: 0 0 32px;
  }
  .final h2 .red { color: var(--red); }
  .final p {
    font-size: var(--fs-lg);
    color: var(--fg-2);
    max-width: 48ch;
    margin: 0 auto 48px;
  }
  .final .signup {
    margin: 0 auto;
  }
  .final .signup-note {
    justify-content: center;
  }

  /* ============================================================
     FOOTER
     ============================================================ */
  footer {
    background: var(--black);
    color: var(--white);
    padding: 64px 0 32px;
  }
  .foot-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    border-bottom: var(--hairline) solid var(--ink-700);
    padding-bottom: 48px;
    margin-bottom: 32px;
  }
  .foot-brand .brand-word { color: var(--white); }
  .foot-brand p {
    font-size: 13px;
    color: var(--ink-300);
    margin-top: 16px;
    max-width: 32ch;
    line-height: 1.5;
  }
  .foot-col h5 {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--ink-300);
    margin: 0 0 16px;
    font-weight: 500;
  }
  .foot-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
  .foot-col a {
    border: 0;
    font-size: 13px;
    color: var(--white);
  }
  .foot-col a:hover { color: var(--red); }
  .foot-bot {
    display: flex; justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: var(--tr-wide);
    text-transform: uppercase;
    color: var(--ink-300);
  }

  /* ============================================================
     GRID OVERLAY (toggle via tweaks)
     ============================================================ */
  body.show-grid::before {
    content: "";
    position: fixed; inset: 0;
    background: repeating-linear-gradient(
      to right,
      transparent 0,
      transparent calc((100vw - 48px) / 12 - 1px),
      rgba(255,59,0,0.12) calc((100vw - 48px) / 12 - 1px),
      rgba(255,59,0,0.12) calc((100vw - 48px) / 12)
    );
    pointer-events: none;
    z-index: 999;
    max-width: var(--container);
    left: 50%; transform: translateX(-50%);
    margin-left: 24px; margin-right: 24px;
  }

  /* responsive nips */
  @media (max-width: 1100px) {
    .hero-grid { grid-template-columns: 1fr; }
    .solution-grid { grid-template-columns: 1fr; gap: 48px; }
    .audience-grid { grid-template-columns: 1fr; gap: 48px; }
    .step { grid-template-columns: 60px 1fr; }
    .step .body, .step .preview { display: none; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .problem-grid { grid-template-columns: repeat(2, 1fr); }
    .problem-cell { border-right: var(--hairline) solid var(--border-1); }
    .problem-cell:nth-child(2n) { border-right: 0; padding-right: 0; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 680px) {
    section { padding: 64px 0; }
    .nav-links { display: none; }
    .features-grid { grid-template-columns: 1fr; }
    .problem-grid { grid-template-columns: 1fr; }
    .problem-cell { border-right: 0; padding-right: 0; }
    .hero-stats { grid-template-columns: 1fr 1fr; }
  }