/* HTech / HT5.AI — site styles
   Tokens follow the HTech Brand Summary (Sept 2026) and design/design-system.html. */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("/assets/fonts/inter-latin-var.woff2") format("woff2");
}
@font-face {
  /* Neurotext's own wordmark face, subset to the letters of its name */
  font-family: "Archivo Neurotext";
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/archivo-600-neurotext.woff2") format("woff2");
}

:root {
  color-scheme: dark;

  /* Brand palette */
  --navy: #0B1F3A;
  --canvas: #F6F4EF;
  --grey: #8A93A0;
  --amber: #F2994A;
  --slate: #7A8699;

  /* Derived tones (sampled from the primary lockup / tuned for WCAG AA) */
  --grey-on-navy: #A7B0BC;
  --slate-on-navy: #9AA6B8;      /* 6.7:1 on navy */
  --slate-on-canvas: #55647A;    /* 5.5:1 on canvas */
  --rule-on-navy: rgba(246, 244, 239, .14);
  --rule-on-canvas: rgba(11, 31, 58, .14);
  --trace-on-navy: rgba(246, 244, 239, .32);

  --font: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;

  --t-display: clamp(2.75rem, 1.6rem + 4.6vw, 5.5rem);
  --t-h2: clamp(1.875rem, 1.4rem + 1.8vw, 2.75rem);
  --t-h3: 1.375rem;
  --t-lead: clamp(1.125rem, 1rem + .4vw, 1.3125rem);
  --t-body: 1.0625rem;
  --t-small: .875rem;
  --t-caption: .75rem;
  --t-quote: clamp(1.5rem, 1.2rem + 1.2vw, 2.125rem);

  --gutter: clamp(16px, 4vw, 56px);
  --maxw: 1240px;
  --nav-h: 72px;
  --trace: 2px;
  --node: 10px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--nav-h);
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  background: var(--navy);
  color: var(--canvas);
  font-family: var(--font);
  font-size: var(--t-body);
  line-height: 1.6;
  font-optical-sizing: auto;
  font-feature-settings: "cv11" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: inherit; }
[hidden] { display: none !important; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.skip {
  position: absolute; left: 16px; top: -48px; z-index: 100;
  background: var(--canvas); color: var(--navy); padding: 10px 14px; font-weight: 600; text-decoration: none;
}
.skip:focus { top: 12px; }

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

/* ── Layout ─────────────────────────────────────────── */
.band { padding-inline: var(--gutter); padding-block: clamp(72px, 9vw, 128px); }
.band--canvas { background: var(--canvas); color: var(--navy); }
.wrap { max-width: var(--maxw); margin-inline: auto; }

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 16px 24px;
  align-items: baseline;
  margin-bottom: clamp(48px, 6vw, 80px);
}
@media (max-width: 760px) { .section-head { grid-template-columns: 1fr; } }

/* ── Type ───────────────────────────────────────────── */
.caption {
  font-size: var(--t-caption); font-weight: 600; line-height: 1.5;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--slate-on-navy); margin: 0;
}
.band--canvas .caption { color: var(--slate-on-canvas); }
.display {
  font-size: var(--t-display); font-weight: 700;
  line-height: .98; letter-spacing: -.035em;
  margin: 0; text-wrap: balance;
}
.h2 { font-size: var(--t-h2); font-weight: 700; line-height: 1.08; letter-spacing: -.025em; margin: 0; text-wrap: balance; }
.h2--sm { font-size: clamp(1.625rem, 1.3rem + 1.2vw, 2.25rem); }
.h3 { font-size: var(--t-h3); font-weight: 600; line-height: 1.25; letter-spacing: -.012em; margin: 0; }
.lead { font-size: var(--t-lead); line-height: 1.5; color: var(--slate-on-navy); max-width: 34em; margin: 0; text-wrap: pretty; }
.body { max-width: 62ch; margin: 0; text-wrap: pretty; }
.quote {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: var(--t-quote); line-height: 1.3; letter-spacing: -.005em;
  margin: 0; text-wrap: balance;
}

/* ── Logo ───────────────────────────────────────────── */
.lockup { display: inline-flex; align-items: center; gap: 14px; color: var(--canvas); text-decoration: none; }
.lockup svg { height: 40px; width: auto; flex: none; }
.wordmark { font-weight: 700; letter-spacing: -.03em; font-size: 1.5rem; line-height: 1; white-space: nowrap; }
.wordmark .t { color: var(--amber); }
.wordmark sub { font-size: .42em; vertical-align: baseline; margin-left: .06em; color: var(--amber); letter-spacing: 0; }
.lockup--sm svg { height: 32px; }
.lockup--sm .wordmark { font-size: 1.25rem; }

/* ── Nav ────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--navy);
  border-bottom: 1px solid var(--rule-on-navy);
  padding-inline: var(--gutter);
  padding-top: env(safe-area-inset-top, 0px);
}
.nav-inner {
  max-width: var(--maxw); margin-inline: auto;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav-links { display: flex; gap: 32px; font-size: var(--t-small); }
.nav-links a { color: var(--slate-on-navy); text-decoration: none; padding-block: 8px; position: relative; transition: color .2s ease; }
.nav-links a:hover, .nav-links a[aria-current="true"] { color: var(--canvas); }
.nav-links a[aria-current="true"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--canvas);
}
.nav-toggle {
  display: none;
  font: 600 var(--t-caption)/1 var(--font); letter-spacing: .18em; text-transform: uppercase;
  color: var(--canvas); background: transparent; border: 1px solid var(--rule-on-navy);
  height: 40px; padding: 0 14px; cursor: pointer;
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .nav-links {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; gap: 0;
    background: var(--navy); border-bottom: 1px solid var(--rule-on-navy);
    padding: 8px var(--gutter) 16px;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { font-size: 1.125rem; padding-block: 14px; border-top: 1px solid var(--rule-on-navy); }
  .nav-links a[aria-current="true"]::after { display: none; }
  .nav { position: sticky; }
}

/* ── Actions ────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 14px;
  height: 52px; padding: 0 22px 0 20px;
  border: 1px solid var(--canvas); border-radius: 0;
  background: transparent; color: var(--canvas);
  font: 600 1rem/1 var(--font); letter-spacing: -.005em;
  text-decoration: none; cursor: pointer;
  transition: background-color .2s ease, color .2s ease, opacity .2s ease;
}
.btn .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--amber); flex: none; transition: transform .25s ease; }
.btn:hover { background: var(--canvas); color: var(--navy); }
.btn:hover .dot { transform: scale(1.35); }
.btn--on-canvas { border-color: var(--navy); color: var(--navy); }
.btn--on-canvas:hover { background: var(--navy); color: var(--canvas); }
.btn[disabled] { opacity: .6; cursor: progress; }

.link {
  color: inherit; font-weight: 500; font-size: var(--t-small); text-decoration: none;
  border-bottom: 1px solid var(--rule-on-navy); padding-bottom: 3px;
  display: inline-flex; gap: 8px; transition: border-color .2s ease;
}
.link:hover { border-bottom-color: currentColor; }
.link span { transition: transform .2s ease; }
.link:hover span { transform: translateX(3px); }

/* ── Hero ───────────────────────────────────────────── */
.hero { padding-block: clamp(56px, 8vw, 112px) 0; }
.hero-body {
  display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  gap: 40px; align-items: end;
  padding-bottom: clamp(56px, 7vw, 96px);
}
.hero .display { margin-top: 24px; max-width: 11.5em; }
.hero .lead { margin-top: 28px; }
.hero .btn { margin-top: 40px; }
.hero-trace { align-self: stretch; min-height: 260px; }
.hero-trace svg { width: 100%; height: 100%; display: block; overflow: visible; }
.hero-trace .ln { stroke: var(--canvas); stroke-opacity: .32; stroke-width: 2; fill: none; }
.hero-trace .nd { fill: var(--canvas); }
.hero-trace .lbl { fill: var(--slate-on-navy); font: 600 11px var(--font); letter-spacing: .18em; }
.hero-foot {
  display: flex; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap;
  padding-block: 18px; border-top: 1px solid var(--rule-on-navy);
  font-size: var(--t-caption); color: var(--slate-on-navy);
  letter-spacing: .18em; text-transform: uppercase; font-weight: 600;
}
@media (max-width: 860px) {
  .hero-body { grid-template-columns: 1fr; }
  .hero-trace { display: none; }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-trace .ln { stroke-dasharray: 1200; stroke-dashoffset: 1200; animation: draw 1.6s cubic-bezier(.6, 0, .2, 1) .2s forwards; }
  .hero-trace .nd, .hero-trace .lbl { opacity: 0; animation: appear .4s ease forwards; }
  .hero-trace .d1 { animation-delay: .9s; }
  .hero-trace .d2 { animation-delay: 1.15s; }
  .hero-trace .d3 { animation-delay: 1.4s; }
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes appear { to { opacity: 1; } }

/* ── Pillars (branches) ─────────────────────────────── */
.pillars { border-top: 1px solid var(--rule-on-navy); }
.branches { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.branches::before {
  content: ""; position: absolute; top: 0; left: 0; right: calc(100% / 3);
  height: var(--trace); background: var(--trace-on-navy);
}
.branch { position: relative; padding: 64px 32px 0 0; display: flex; flex-direction: column; align-items: flex-start; }
.branch::before {
  content: ""; position: absolute; top: 0; left: 0; width: var(--trace); height: 40px; background: var(--trace-on-navy);
}
.branch::after {
  content: ""; position: absolute; top: 40px; left: calc(var(--node) / -2 + 1px);
  width: var(--node); height: var(--node); border-radius: 50%; background: var(--canvas);
}
.branch .h3 { margin-top: 14px; }
.branch > p:not(.caption) { margin: 12px 0 24px; color: var(--slate-on-navy); max-width: 32ch; }
.branch .link { margin-top: auto; }
@media (max-width: 760px) {
  .branches { grid-template-columns: 1fr; }
  .branches::before { display: none; }
  .branch { padding: 0 0 48px 32px; border-left: var(--trace) solid var(--trace-on-navy); }
  .branch:last-child { padding-bottom: 0; border-left-color: transparent; }
  .branch::before { top: 8px; left: calc(var(--trace) * -1); width: 18px; height: var(--trace); }
  .branch:last-child::before {
    top: 0; height: 10px; background: none;
    border-left: var(--trace) solid var(--trace-on-navy); border-bottom: var(--trace) solid var(--trace-on-navy);
  }
  .branch::after { top: 4px; left: 16px; }
}

/* ── About ──────────────────────────────────────────── */
.about-grid {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 32px clamp(32px, 6vw, 96px);
}
.about-grid .quote { max-width: 14em; }
.about-copy { display: grid; gap: 20px; }
.about-copy p { margin: 0; max-width: 60ch; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

.why { margin-top: clamp(72px, 9vw, 120px); padding-top: 40px; border-top: 1px solid var(--rule-on-canvas); }
.why-head { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 16px 24px; margin-bottom: 56px; }
.why-head p { margin: 0; max-width: 60ch; color: var(--slate-on-canvas); }
@media (max-width: 760px) { .why-head { grid-template-columns: 1fr; } }

.gens { list-style: none; margin: 0; padding: 0; position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.gens::before { content: ""; position: absolute; left: 11px; right: calc(20% - 11px); top: 22px; height: var(--trace); background: var(--navy); }
.gen { position: relative; padding: 52px 16px 0 0; display: flex; flex-direction: column; }
.gen .node { position: absolute; top: 23px; left: 0; width: 22px; height: 22px; margin-top: -11px; border-radius: 50%; background: var(--grey); }
.gen--now .node {
  width: 44px; height: 44px; margin-top: -22px; left: -11px;
  background: radial-gradient(circle at 50% 50%, #FFD889 0%, #F6AC5D 55%, var(--amber) 100%);
  display: grid; place-items: center; font-weight: 700; font-size: 1.1rem; color: var(--navy); line-height: 1;
}
.gen .n { font-size: var(--t-caption); letter-spacing: .18em; text-transform: uppercase; font-weight: 600; color: var(--slate-on-canvas); font-variant-numeric: tabular-nums; }
.gen .gname { font-weight: 600; font-size: 1.0625rem; margin-top: 6px; line-height: 1.3; }
.gen .gdesc { font-size: var(--t-small); color: var(--slate-on-canvas); margin-top: 6px; line-height: 1.5; max-width: 22ch; }
.gen--now .gname { font-weight: 700; }
@media (max-width: 760px) {
  .gens { grid-template-columns: 1fr; padding-left: 40px; }
  .gens::before { left: 10px; right: auto; top: 12px; bottom: 60px; width: var(--trace); height: auto; }
  .gen { padding: 0 0 28px; }
  .gen:last-child { padding-bottom: 0; }
  .gen .node { top: 11px; left: -41px; }
  .gen--now .node { left: -52px; top: 14px; }
}

/* ── Services ───────────────────────────────────────── */
.services { padding-top: 0; }
.services .wrap { border-top: 1px solid var(--rule-on-canvas); padding-top: clamp(72px, 9vw, 128px); }
.service {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: 24px 48px; padding-block: 48px;
  border-top: 1px solid var(--rule-on-canvas);
}
.service:last-child { border-bottom: 1px solid var(--rule-on-canvas); }
.service-title .caption { margin-bottom: 14px; }
.service-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 40px; margin: 32px 0 0; }
.service-meta dt { font-size: var(--t-caption); font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--slate-on-canvas); margin-bottom: 8px; }
.service-meta dd { margin: 0; font-size: 1rem; line-height: 1.55; }
@media (max-width: 760px) { .service, .service-meta { grid-template-columns: 1fr; } }

/* ── Partners ───────────────────────────────────────── */
.partners {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--rule-on-navy);
}
.partner {
  grid-column: span 2;
  padding: 36px 32px 44px;
  border-bottom: 1px solid var(--rule-on-navy);
  border-left: 1px solid var(--rule-on-navy);
  display: flex; flex-direction: column; gap: 14px;
}
.partner--featured, .partner:nth-child(2) { border-left: 0; padding-left: 0; }
.partner > p:not(.caption) { margin: 0; color: var(--slate-on-navy); font-size: 1rem; line-height: 1.55; max-width: 38ch; }

.partner-mark {
  height: 48px; margin-bottom: 12px;
  display: inline-flex; align-items: center; gap: 10px; align-self: flex-start;
  color: var(--canvas); text-decoration: none;
  opacity: .92; transition: opacity .2s ease;
}
a.partner-mark:hover { opacity: 1; }
.partner-mark img { display: block; width: auto; }
.pm-izzi { height: 26px; }
.pm-polynome { height: 28px; }
.nt-icon { width: 34px; height: 34px; }
.nt-name { font-family: "Archivo Neurotext", var(--font); font-weight: 600; font-size: 1.5rem; letter-spacing: -.02em; line-height: 1; }
.partner-mark--type { font-weight: 700; font-size: 1.5rem; letter-spacing: -.025em; line-height: 1; }

/* Featured partner (Aperture): full row, story on the left, spec on the right */
.partner--featured {
  grid-column: span 6;
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 32px clamp(32px, 5vw, 72px);
  padding: 40px 0 48px;
}
.featured-main { display: flex; flex-direction: column; gap: 14px; }
.featured-main > p:not(.caption) { margin: 0; color: var(--slate-on-navy); font-size: 1rem; line-height: 1.6; max-width: 44ch; }
.featured-detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px 40px; align-content: start; padding-top: 4px; }
.featured-detail .caption { margin-bottom: 14px; }
.inventory { margin: 0; display: grid; gap: 12px; }
.inventory dt { font-weight: 600; font-size: var(--t-small); color: var(--canvas); }
.inventory dd { margin: 2px 0 0; color: var(--slate-on-navy); font-size: 1rem; line-height: 1.5; }
.why-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.why-list li { position: relative; padding-left: 18px; color: var(--slate-on-navy); font-size: 1rem; line-height: 1.5; }
.why-list li::before { content: ""; position: absolute; left: 0; top: .6em; width: 6px; height: 6px; border-radius: 50%; background: var(--grey-on-navy); }

/* Section head with a lead under the heading */
.section-head-body { display: grid; gap: 20px; }

@media (max-width: 960px) {
  .partner--featured { grid-template-columns: 1fr; }
  .partner, .partner:nth-child(2), .partner:nth-child(3) { grid-column: span 3; }
  .partner { padding-left: 32px; border-left: 1px solid var(--rule-on-navy); }
  .partner:nth-child(2) { border-left: 0; padding-left: 0; }
  .partner:nth-child(4) { grid-column: span 6; border-left: 0; padding-left: 0; }
  .partner--featured { grid-column: span 6; border-left: 0; padding-left: 0; }
}
@media (max-width: 600px) {
  .partner, .partner:nth-child(n) { grid-column: span 6; border-left: 0; padding-left: 0; padding-right: 0; }
  .featured-detail { grid-template-columns: 1fr; }
}

/* ── Closing strip ──────────────────────────────────── */
.strip { padding-block: clamp(56px, 7vw, 96px); }
.strip-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.strip .h2 { max-width: 16em; }

/* ── Contact ────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(40px, 6vw, 96px); }
.form { display: grid; gap: 32px; }
.field { display: grid; gap: 8px; }
.field label { font-size: var(--t-caption); font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--slate-on-navy); }
.field input, .field textarea {
  font: 400 1.125rem/1.5 var(--font); color: var(--canvas);
  background: transparent; border: 0; border-bottom: 1px solid rgba(246, 244, 239, .32);
  padding: 8px 0 12px; border-radius: 0; width: 100%;
  transition: border-color .2s ease;
}
.field textarea { resize: vertical; min-height: 140px; }
.field input::placeholder, .field textarea::placeholder { color: rgba(246, 244, 239, .4); }
.field input:hover, .field textarea:hover { border-bottom-color: rgba(246, 244, 239, .6); }
.field input:focus, .field textarea:focus { border-bottom-color: var(--canvas); }
.field input:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--amber); outline-offset: 4px; }
.field .err { font-size: var(--t-small); color: var(--canvas); display: flex; gap: 8px; align-items: baseline; }
.field .err::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--canvas); flex: none; transform: translateY(-2px); }
.field.is-invalid input, .field.is-invalid textarea { border-bottom: 2px solid var(--canvas); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.form-status { margin: 0; font-size: var(--t-small); color: var(--slate-on-navy); }
.form-status:empty { display: none; }

.form-done { display: grid; gap: 16px; align-content: start; padding-top: 8px; }
.form-done p { margin: 0; color: var(--slate-on-navy); max-width: 44ch; }

.reg { display: grid; gap: 28px; align-content: start; border-left: 1px solid var(--rule-on-navy); padding-left: clamp(24px, 3vw, 40px); }
.reg p { margin: 0; }
.reg .caption { margin-bottom: 8px; }
.reg-line { font-size: var(--t-h3); font-weight: 600; letter-spacing: -.012em; line-height: 1.3; }
@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
  .reg { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule-on-navy); padding-top: 32px; }
}

/* ── Footer ─────────────────────────────────────────── */
.footer {
  padding-inline: var(--gutter);
  padding-block: 40px calc(40px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--rule-on-navy);
}
.footer-inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 16px 40px; }
.footer-tag { justify-self: start; }
.footer-legal { margin: 0; font-size: var(--t-small); color: var(--slate-on-navy); font-variant-numeric: tabular-nums; }
@media (max-width: 960px) { .footer-inner { grid-template-columns: 1fr; } }

/* ── Simple pages (thanks / 404) ────────────────────── */
.simple { min-height: 100vh; display: grid; grid-template-rows: auto 1fr auto; }
.simple-body { display: grid; align-content: center; gap: 24px; }
.simple-body .lead { margin: 0; }