/* ============================================================
   NE AI Lab — marketing site
   Aesthetic: operational-editorial. Deep navy ink on warm
   off-white paper, slate secondary, single pine-green accent.
   Plain, trustworthy, print-like. No neon, no sci-fi.
   ============================================================ */

:root {
  --paper:  #f7f5f0;
  --paper-2:#efece4;
  --ink:    #16273c;   /* deep navy */
  --ink-90: #24354a;
  --slate:  #5b6b7c;
  --hair:   rgba(22, 39, 60, 0.16);
  --hair-soft: rgba(22, 39, 60, 0.09);
  --accent: #2e7d5a;   /* pine green */
  --accent-dark: #246347;
  --accent-wash: rgba(46, 125, 90, 0.08);

  --font-grot:  "Archivo", "Helvetica Neue", sans-serif;
  --font-serif: "Instrument Serif", Georgia, serif;
  --font-mono:  "Fragment Mono", ui-monospace, monospace;

  --gutter: clamp(1.25rem, 4vw, 3rem);
  --maxw: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-grot);
  font-variation-settings: "wdth" 100, "wght" 400;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
img, svg { display: block; }
::selection { background: var(--ink); color: var(--paper); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: 0.6rem 1rem; font-family: var(--font-mono);
  font-size: 0.8rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Type helpers ---------- */
.h-display {
  font-variation-settings: "wdth" 84, "wght" 740;
  letter-spacing: -0.02em;
  line-height: 1.05;
}
em.serif, .serif-em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: normal;
}
.mono-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--slate);
}

/* ---------- Masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.6rem;
  padding: 0 var(--gutter);
  height: 64px;
  background: var(--paper);
  border-bottom: 1.5px solid var(--ink);
}
.masthead__brand { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; }
.masthead__mark {
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.03em;
  background: var(--ink); color: var(--paper); padding: 0.3rem 0.45rem;
}
.masthead__name {
  font-variation-settings: "wdth" 96, "wght" 700;
  font-size: 1rem; letter-spacing: -0.01em; white-space: nowrap;
}
.masthead__nav {
  display: flex; gap: 1.5rem; margin-left: auto;
  font-family: var(--font-mono); font-size: 0.79rem;
}
.masthead__nav a {
  text-decoration: none; border-bottom: 1px solid transparent;
  padding-bottom: 2px; transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.masthead__nav a:hover { border-color: var(--accent); color: var(--accent-dark); }
.masthead__cta {
  font-family: var(--font-mono); font-size: 0.79rem; text-decoration: none;
  background: var(--accent); color: #fff;
  border: 1.5px solid var(--accent);
  padding: 0.5rem 1rem;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
  white-space: nowrap;
}
.masthead__cta:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none; border: 1.5px solid var(--ink);
  font-family: var(--font-mono); font-size: 0.78rem;
  padding: 0.45rem 0.8rem; cursor: pointer; color: var(--ink);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.88rem;
  text-decoration: none; text-align: center;
  padding: 0.95rem 1.7rem;
  border: 1.5px solid var(--ink);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn--outline { background: transparent; color: var(--ink); }
.btn--outline:hover { background: var(--ink); color: var(--paper); }
.btn--paper { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.btn--paper:hover { background: transparent; color: var(--paper); }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(3rem, 7vw, 5.5rem) var(--gutter) clamp(2.5rem, 5vw, 4rem);
}
.hero__top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(240px, 0.85fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero__art {
  margin: 0;
  border: 1.5px solid var(--ink);
  background: #fff;
  padding: 0.6rem;
}
.hero__art img { width: 100%; height: auto; display: block; }
.hero__art figcaption {
  padding-top: 0.6rem; margin-top: 0.6rem;
  border-top: 1px solid var(--hair);
}
@media (max-width: 900px) {
  .hero__top { grid-template-columns: 1fr; }
  .hero__art { max-width: 420px; }
}

.hero__title {
  margin: 0 0 1.4rem;
  font-size: clamp(2.1rem, 5.4vw, 4.1rem);
  max-width: 22ch;
  text-wrap: balance;
}
.hero__sub {
  margin: 0 0 2.2rem;
  font-size: clamp(1.02rem, 1.8vw, 1.22rem);
  color: var(--ink-90);
  max-width: 58ch;
  line-height: 1.65;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 1.1rem; }
.hero__trust {
  margin: 0;
  font-family: var(--font-mono); font-size: 0.8rem;
  color: var(--slate);
}
.hero__trust::before { content: "— "; }

/* ---------- Flow (Map → Score → Build → Train → Improve) ---------- */
.flow {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  border: 1.5px solid var(--ink);
  background: #fff;
  padding: clamp(1.4rem, 3.5vw, 2.4rem);
}
.flow__title { margin: 0 0 1.4rem; }
.flow__track {
  display: flex; align-items: stretch; gap: 0;
  overflow-x: auto;
}
.flow__step {
  flex: 1 1 0; min-width: 120px;
  display: flex; flex-direction: column; gap: 0.35rem;
  padding: 1rem 1.1rem 1.1rem;
  border: 1px solid var(--hair);
  border-left: 3px solid var(--accent);
  background: var(--paper);
  position: relative;
}
.flow__step + .flow__step { margin-left: 1.6rem; }
.flow__step + .flow__step::before {
  content: "→";
  position: absolute; left: -1.35rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono); color: var(--slate);
}
.flow__step b {
  font-variation-settings: "wdth" 88, "wght" 700;
  text-transform: uppercase; letter-spacing: 0.02em;
  font-size: 0.98rem;
}
.flow__step span { font-size: 0.8rem; color: var(--slate); line-height: 1.45; }

/* ---------- Slogan band ---------- */
.band {
  background: var(--ink); color: var(--paper);
  text-align: center;
  padding: 0.9rem var(--gutter);
  font-family: var(--font-mono); font-size: 0.82rem;
  letter-spacing: 0.09em; text-transform: uppercase;
}
.band em { font-style: normal; color: #9fd6bd; }

/* ---------- Sections ---------- */
.section {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(3.2rem, 7vw, 5.5rem) var(--gutter);
  border-bottom: 1px solid var(--hair);
}
.section--rail {
  display: grid;
  grid-template-columns: minmax(110px, 180px) 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
}
.section__rail { position: sticky; top: 84px; align-self: start; display: flex; flex-direction: column; gap: 0.3rem; }
.section__no { font-family: var(--font-serif); font-style: italic; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1; }
.section__title {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 3.8vw, 2.7rem);
  max-width: 26ch; text-wrap: balance;
}
.section__lede { margin: 0 0 clamp(1.8rem, 4vw, 2.8rem); color: var(--ink-90); max-width: 68ch; font-size: 1.05rem; }

/* ---------- Card grids ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}
.card {
  border: 1px solid var(--hair);
  border-top: 3px solid var(--ink);
  background: #fff;
  padding: 1.4rem 1.4rem 1.5rem;
}
.card--accent { border-top-color: var(--accent); }
.card__label { display: block; margin-bottom: 0.7rem; }
.card__title {
  margin: 0 0 0.55rem;
  font-size: 1.12rem;
  font-variation-settings: "wdth" 90, "wght" 680;
  letter-spacing: -0.01em;
}
.card__body { margin: 0; color: var(--slate); font-size: 0.95rem; line-height: 1.55; }

/* ---------- Steps ledger ---------- */
.steps { list-style: none; margin: 0; padding: 0; }
.steps__item {
  display: grid;
  grid-template-columns: minmax(60px, 100px) 1fr;
  gap: 1rem clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.4rem, 3.5vw, 2rem) 0;
  border-top: 1px solid var(--ink);
}
.steps__item:last-child { border-bottom: 1px solid var(--ink); }
.steps__no {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 0.95;
  font-variation-settings: "wdth" 72, "wght" 800;
  color: var(--accent);
}
.steps__title {
  margin: 0 0 0.4rem;
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-variation-settings: "wdth" 86, "wght" 700;
  text-transform: uppercase; letter-spacing: 0;
}
.steps__desc { margin: 0; color: var(--ink-90); max-width: 62ch; }

/* ---------- Nope list (what we do not do) ---------- */
.nope { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; max-width: 760px; }
.nope li {
  display: flex; gap: 1rem; align-items: baseline;
  padding: 1.05rem 0;
  border-top: 1px solid var(--hair);
  font-size: 1.05rem;
}
.nope li:last-child { border-bottom: 1px solid var(--hair); }
.nope li::before {
  content: "✕";
  font-family: var(--font-mono);
  color: var(--accent-dark);
  flex: 0 0 auto;
}

/* ---------- Tags ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 0.6rem; max-width: 860px; }
.tags span {
  font-family: var(--font-mono); font-size: 0.8rem;
  border: 1px solid var(--hair);
  background: #fff;
  padding: 0.45rem 0.85rem;
}

/* ---------- Before / After ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.compare__col { border: 1px solid var(--hair); background: #fff; padding: 1.5rem; }
.compare__col--after { border: 1.5px solid var(--accent); background: var(--accent-wash); }
.compare__head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 1.1rem; padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--hair);
}
.compare__head h3 {
  margin: 0; font-size: 1.05rem;
  text-transform: uppercase; font-variation-settings: "wdth" 86, "wght" 720;
}
.compare ol { list-style: none; margin: 0; padding: 0; }
.compare ol li {
  position: relative;
  padding: 0.42rem 0 0.42rem 1.5rem;
  font-size: 0.95rem; color: var(--ink-90);
}
.compare ol li::before {
  content: "↓";
  position: absolute; left: 0; top: 0.42rem;
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--slate);
}
.compare ol li:first-child::before { content: "●"; font-size: 0.6rem; top: 0.65rem; }
.compare__col--after ol li.ai::after {
  content: "AI";
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: #fff; background: var(--accent);
  padding: 0.1rem 0.35rem; margin-left: 0.5rem;
  vertical-align: 1px;
}
.compare__note {
  grid-column: 1 / -1;
  margin: 0.4rem 0 0;
  font-family: var(--font-mono); font-size: 0.82rem;
  color: var(--ink-90);
  border-left: 3px solid var(--accent);
  padding: 0.6rem 0 0.6rem 1rem;
  background: #fff;
}

/* ---------- Module cards ---------- */
.modules { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.module {
  border: 1px solid var(--hair); background: #fff;
  padding: 1.4rem; display: flex; flex-direction: column; gap: 0.7rem;
}
.module__name {
  margin: 0; font-size: 1.08rem;
  font-variation-settings: "wdth" 90, "wght" 700;
}
.module__what { margin: 0; color: var(--ink-90); font-size: 0.94rem; }
.module__meta { margin: 0; font-size: 0.83rem; color: var(--slate); }
.module__meta b { color: var(--ink); font-weight: 600; }
.module__hitl {
  margin: 0; font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--accent-dark);
  border-top: 1px dashed var(--hair); padding-top: 0.7rem;
}
.module__hitl::before { content: "☑ "; }
.module__cta {
  margin-top: auto;
  font-family: var(--font-mono); font-size: 0.78rem;
  text-decoration: none; color: var(--accent-dark);
}
.module__cta:hover { text-decoration: underline; }
.module-group { margin-bottom: clamp(2rem, 5vw, 3rem); }
.module-group__title {
  margin: 0 0 1rem; padding-bottom: 0.5rem;
  border-bottom: 1.5px solid var(--ink);
  font-size: 1.25rem;
  font-variation-settings: "wdth" 86, "wght" 720;
  text-transform: uppercase;
}

/* ---------- Phases (assessment page) ---------- */
.phase {
  display: grid;
  grid-template-columns: minmax(60px, 90px) 1fr;
  gap: 1rem clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.6rem, 4vw, 2.2rem) 0;
  border-top: 1px solid var(--ink);
}
.phase:last-of-type { border-bottom: 1px solid var(--ink); }
.phase__no {
  font-size: clamp(2rem, 4.5vw, 3.2rem); line-height: 1;
  font-variation-settings: "wdth" 72, "wght" 800;
  color: var(--accent);
}
.phase__title {
  margin: 0 0 0.9rem; font-size: clamp(1.2rem, 2.4vw, 1.5rem);
  font-variation-settings: "wdth" 86, "wght" 700; text-transform: uppercase;
}
.phase__grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.phase__cell h4 {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--slate); font-weight: 400;
}
.phase__cell p { margin: 0; font-size: 0.93rem; color: var(--ink-90); }

/* ---------- Checklist ---------- */
.checklist { list-style: none; margin: 0; padding: 0; max-width: 700px; }
.checklist li {
  display: flex; gap: 0.9rem; align-items: baseline;
  padding: 0.75rem 0; border-top: 1px solid var(--hair);
  color: var(--ink-90);
}
.checklist li:last-child { border-bottom: 1px solid var(--hair); }
.checklist li::before {
  content: "☐"; font-family: var(--font-mono); color: var(--accent-dark);
}

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--ink); color: var(--paper);
  padding: clamp(3.5rem, 8vw, 6rem) var(--gutter);
  text-align: center;
}
.cta-banner__title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5.5vw, 3.6rem);
}
.cta-banner__copy {
  margin: 0 auto 2.2rem;
  max-width: 58ch; font-size: 1.05rem; opacity: 0.85;
}
.cta-banner .btn--primary { border-color: var(--accent); }

/* ---------- Page header (subpages) ---------- */
.page-head {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(3rem, 6vw, 4.5rem) var(--gutter) clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--hair);
}
.page-head__title { margin: 0 0 1rem; font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
.page-head__sub { margin: 0; font-size: 1.15rem; color: var(--ink-90); max-width: 60ch; }

/* ---------- Contact form ---------- */
.form-wrap {
  display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(260px, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1rem; }
.form .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 0.35rem; }
.field label {
  font-family: var(--font-mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-90);
}
.field input, .field select, .field textarea {
  font-family: var(--font-grot); font-size: 0.95rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--hair);
  border-bottom: 1.5px solid var(--ink);
  padding: 0.7rem 0.8rem;
  border-radius: 0;
  appearance: none;
}
.field textarea { resize: vertical; min-height: 90px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
.form__submit { margin-top: 0.5rem; }
.form__reassure {
  margin: 1rem 0 0; font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--slate);
}
.form__status { margin: 1rem 0 0; font-size: 0.95rem; color: var(--accent-dark); display: none; }
.form__status.show { display: block; }

.contact-aside { border: 1px solid var(--hair); background: #fff; padding: 1.6rem; }
.contact-aside h3 { margin: 0 0 0.8rem; font-size: 1.05rem; font-variation-settings: "wdth" 88, "wght" 700; text-transform: uppercase; }
.contact-aside p { margin: 0 0 1rem; font-size: 0.92rem; color: var(--slate); }
.contact-aside a { color: var(--accent-dark); }

/* ---------- Footer ---------- */
.footer {
  background: var(--paper-2);
  border-top: 1.5px solid var(--ink);
  padding: clamp(2rem, 5vw, 3rem) var(--gutter);
}
.footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 1.5rem 3rem;
  justify-content: space-between; align-items: start;
}
.footer__brand p { margin: 0.4rem 0 0; font-family: var(--font-serif); font-style: italic; font-size: 1.05rem; }
.footer__links { display: flex; flex-direction: column; gap: 0.45rem; font-family: var(--font-mono); font-size: 0.82rem; }
.footer__links a { text-decoration: none; }
.footer__links a:hover { color: var(--accent-dark); text-decoration: underline; }
.footer__legal {
  max-width: var(--maxw); margin: 2rem auto 0;
  padding-top: 1.2rem; border-top: 1px solid var(--hair);
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--slate);
}

/* ---------- Reveal ---------- */
[data-observe] {
  opacity: 0; transform: translateY(12px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-observe].in-view { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .masthead__nav, .masthead__cta { display: none; }
  .nav-toggle { display: block; }
  .masthead.nav-open { flex-wrap: wrap; height: auto; padding-bottom: 1rem; }
  .masthead.nav-open .masthead__nav {
    display: flex; flex-direction: column; gap: 0.9rem;
    width: 100%; order: 3; margin: 0.8rem 0 0.4rem;
  }
  .masthead.nav-open .masthead__cta { display: inline-block; order: 4; }
  .section--rail { grid-template-columns: 1fr; }
  .section__rail { position: static; flex-direction: row; align-items: baseline; gap: 0.9rem; }
  .phase__grid { grid-template-columns: 1fr; }
  .compare { grid-template-columns: 1fr; }
  .form-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .form { grid-template-columns: 1fr; }
  .flow__track { flex-direction: column; }
  .flow__step + .flow__step { margin-left: 0; margin-top: 1.5rem; }
  .flow__step + .flow__step::before {
    content: "↓"; left: 1rem; top: -1.35rem; transform: none;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-observe] { opacity: 1; transform: none; }
}