/* NxtRonikx Technologies
   Industrial / bold. Palette from the logo: charcoal wordmark, green accent.
   One stylesheet. Self-hosted Archivo + Inter. WCAG 2.1 AA.
   Square corners, heavy rules, oversized index numbers (the 5 Rs). */

@font-face { font-family: "Archivo"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/archivo-600.woff2") format("woff2"); }
@font-face { font-family: "Archivo"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/archivo-700.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/inter-400.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/inter-600.woff2") format("woff2"); }

:root {
  --paper: #f3f6f1;
  --paper-2: #e7eee6;
  --surface: #ffffff;
  --line: #d5dfd6;
  --line-strong: #101612;

  --ink: #121c16;
  --ink-2: #3e4a42;
  --muted: #4d5c52;

  --char: #101612;
  --char-2: #1a2420;
  --muted-on-dark: #c5d0c8;

  --green: #0f6e38;
  --green-ink: #0c5c30;
  --green-on-dark: #8fdf9a;
  --green-soft: #e5f4ea;

  --font-head: "Archivo", "Arial Narrow", Impact, sans-serif;
  --font-body: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --fs-display: clamp(2.6rem, 1.4rem + 4.2vw, 4.4rem);
  --fs-h1: clamp(2.1rem, 1.4rem + 2.6vw, 3.2rem);
  --fs-h2: clamp(1.7rem, 1.3rem + 1.4vw, 2.35rem);
  --fs-h3: clamp(1.2rem, 1.05rem + 0.4vw, 1.4rem);
  --fs-lead: clamp(1.08rem, 1rem + 0.3vw, 1.25rem);
  --fs-body: 1.0625rem;
  --fs-eyebrow: 0.8125rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --section: clamp(3.5rem, 2rem + 5vw, 6.25rem);

  --container: 1120px;
  --header-h: 84px;
  --shadow: 0 1px 0 rgba(16, 22, 18, 0.08), 0 12px 28px rgba(16, 22, 18, 0.08);

  --lb-accent: var(--green-on-dark);
  --lb-muted: var(--muted-on-dark);
  --lb-bg: rgba(16, 22, 18, 0.97);
  --lb-tile: #101612;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --radius: 0px;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--green-ink); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
h1, h2, h3 { font-family: var(--font-head); font-weight: 700; line-height: 1.05; letter-spacing: -0.03em; color: var(--ink); text-wrap: balance; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.2; letter-spacing: -0.02em; }
p { text-wrap: pretty; }
:focus-visible { outline: 3px solid var(--green-ink); outline-offset: 3px; }
.band :focus-visible, .site-footer :focus-visible, .hero :focus-visible { outline-color: var(--green-on-dark); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -120px;
  z-index: 200;
  background: var(--green);
  color: #fff;
  padding: 14px 18px;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: 12px; color: #fff; }

.container { width: min(100% - 2.4rem, var(--container)); margin-inline: auto; }
.section { padding-block: var(--section); }
.measure { max-width: 62ch; }
.lead { font-size: var(--fs-lead); color: var(--ink-2); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.85rem;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-ink);
}
.eyebrow::before { content: ""; width: 28px; height: 3px; background: var(--green); }
.section-head { max-width: 40rem; margin-bottom: clamp(1.8rem, 1rem + 2vw, 2.8rem); }
.section-head p:not(.eyebrow) { margin-top: 0.85rem; color: var(--ink-2); font-size: var(--fs-lead); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.25rem;
  border: 2px solid transparent;
  background: var(--green);
  color: #fff;
  font: 600 1rem/1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--green-ink); color: #fff; }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-secondary:hover { background: var(--ink); color: #fff; }
.hero .btn-secondary, .band .btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
}
.hero .btn-secondary:hover, .band .btn-secondary:hover { background: #fff; color: var(--char); border-color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.6rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 3px solid var(--char);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
  line-height: 0;
}
.brand img { height: 40px; width: auto; }
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 48px;
  min-height: 48px;
  padding: 0 0.85rem;
  border: 2px solid var(--char);
  background: #fff;
  color: var(--ink);
  font: 600 0.95rem/1 var(--font-body);
  cursor: pointer;
}
.nav-toggle .bars { display: grid; gap: 4px; width: 18px; }
.nav-toggle .bars span { display: block; height: 2px; background: var(--char); }
.nav-menu { display: flex; align-items: center; gap: 0.35rem; }
.nav-links { display: flex; align-items: center; gap: 0.15rem; list-style: none; padding: 0; }
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 0.75rem;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}
.nav-links a:hover { color: var(--green-ink); }
.nav-links a[aria-current="page"] { color: var(--green-ink); box-shadow: inset 0 -3px 0 var(--green); }

.hero { background: var(--char); color: #fff; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.7fr);
  gap: clamp(1.5rem, 3vw, 3.5rem);
  align-items: end;
  padding-block: clamp(3.2rem, 2rem + 5vw, 6rem);
}
.hero .eyebrow { color: var(--green-on-dark); }
.hero .eyebrow::before { background: var(--green-on-dark); }
.hero h1 { color: #fff; font-size: var(--fs-display); max-width: 14ch; }
.hero .lead { color: var(--muted-on-dark); margin-top: 1.1rem; max-width: 38rem; }
.hero-index {
  border-top: 3px solid var(--green-on-dark);
  padding-top: 1rem;
  margin-bottom: 0.5rem;
}
.hero-index b {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(3rem, 6vw, 4.5rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--green-on-dark);
}
.hero-index span { display: block; margin-top: 0.45rem; color: var(--muted-on-dark); font-weight: 600; }

.proof {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 3px solid var(--char);
  border-bottom: 3px solid var(--char);
  background: var(--surface);
}
.proof li {
  list-style: none;
  padding: 1.15rem 1.2rem;
  border-left: 1px solid var(--line);
}
.proof li:first-child { border-left: 0; }
.proof b { display: block; font-family: var(--font-head); font-size: 1.35rem; letter-spacing: -0.03em; }
.proof span { display: block; margin-top: 0.2rem; color: var(--ink-2); font-size: 0.95rem; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.panel {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-height: 100%;
  padding: 1.35rem 1.25rem 1.4rem;
  background: var(--surface);
  border: 2px solid var(--char);
  border-left-width: 8px;
  text-decoration: none;
  color: inherit;
}
.panel:hover { background: var(--green-soft); color: inherit; }
.panel .kicker { font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--green-ink); }
.panel h3 { font-size: 1.35rem; }
.panel p { color: var(--ink-2); }
.panel .more { margin-top: auto; padding-top: 0.8rem; font-weight: 600; color: var(--green-ink); }

.rail { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); padding: 0; border-top: 4px solid var(--char); }
.rail li { padding: 1.1rem 1rem 0 0.9rem; border-left: 2px solid var(--char); }
.rail-num {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2.5rem, 4vw, 3.75rem);
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: var(--green-ink);
}
.rail h3 { margin-top: 0.7rem; }
.rail p { margin-top: 0.4rem; color: var(--ink-2); }

.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(1.5rem, 3vw, 3rem); align-items: start; }
.split .section-head { margin-bottom: 0; }
.offer-intro { align-items: center; margin-bottom: clamp(1.8rem, 1rem + 2vw, 2.8rem); }
.photo { margin: 0; border: 2px solid var(--char); background: var(--surface); }
.photo img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.checklist { list-style: none; padding: 0; display: grid; gap: 0.85rem; }
.checklist li { padding-left: 1.1rem; border-left: 4px solid var(--green); color: var(--ink-2); }
.checklist strong { color: var(--ink); }
.band .checklist li { color: var(--muted-on-dark); border-left-color: var(--green-on-dark); }
.band .checklist strong { color: #fff; }

.band { background: var(--char); color: #fff; }
.band h2, .band h3 { color: #fff; }
.band .eyebrow { color: var(--green-on-dark); }
.band .eyebrow::before { background: var(--green-on-dark); }
.band .section-head p:not(.eyebrow), .band .lead, .band p { color: var(--muted-on-dark); }
.band a:not(.btn) { color: var(--green-on-dark); }
.cta { text-align: left; }
.cta h2 { max-width: 18ch; }

.service { padding-block: 2.2rem; border-top: 2px solid var(--char); }
.service:last-of-type { border-bottom: 2px solid var(--char); }
.service.has-photo {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.8fr);
  gap: clamp(1.25rem, 2vw, 2.5rem);
  align-items: center;
}
.service.has-photo .service-copy { grid-column: 1; }
.service.has-photo .photo { grid-column: 2; }
.service.has-photo:nth-of-type(even) { grid-template-columns: minmax(16rem, 0.8fr) minmax(0, 1.15fr); }
.service.has-photo:nth-of-type(even) .service-copy { grid-column: 2; }
.service.has-photo:nth-of-type(even) .photo { grid-column: 1; }
.service-top { display: flex; gap: 1rem; align-items: baseline; }
.service-top .rail-num { font-size: clamp(2rem, 3vw, 2.8rem); }
.service h2 { font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem); }
.service p { margin-top: 0.8rem; color: var(--ink-2); max-width: 68ch; }
.service ul { margin-top: 0.8rem; color: var(--ink-2); padding-left: 1.15rem; }
.service li + li { margin-top: 0.3rem; }

.faq { display: grid; gap: 0.6rem; }
.faq details { background: var(--surface); border: 2px solid var(--char); }
.faq summary {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  cursor: pointer;
}
.faq summary:hover { color: var(--green-ink); }
.faq details p { padding: 0 1.1rem 1.1rem; color: var(--ink-2); max-width: 68ch; }

.breadcrumb { padding-block: 0.9rem; background: var(--paper-2); border-bottom: 1px solid var(--line); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 0.45rem; list-style: none; padding: 0; font-size: 0.95rem; }
.breadcrumb li { display: flex; align-items: center; gap: 0.45rem; color: var(--muted); }
.breadcrumb li + li::before { content: "/"; color: var(--muted); }
.breadcrumb a { color: var(--ink-2); text-decoration: none; font-weight: 600; }
.breadcrumb a:hover { color: var(--green-ink); }
.page-hero { padding-block: clamp(2.4rem, 1.4rem + 3vw, 4rem) 0.5rem; }
.page-hero .lead { margin-top: 0.9rem; }

.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(1.5rem, 3vw, 3rem); }
.facts { list-style: none; padding: 0; display: grid; gap: 1.1rem; }
.facts li { border-top: 2px solid var(--char); padding-top: 0.7rem; }
.facts .k { display: block; font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.facts a { font-weight: 600; }
.starters { display: grid; gap: 0.75rem; }
.starter {
  display: block;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 2px solid var(--char);
  text-decoration: none;
  color: inherit;
}
.starter:hover { background: var(--green-soft); color: inherit; }
.starter strong { display: block; font-family: var(--font-head); font-size: 1.25rem; letter-spacing: -0.02em; }
.starter span { display: block; margin-top: 0.25rem; color: var(--ink-2); }
.note { margin-top: 1rem; color: var(--muted); font-size: 0.95rem; }

.site-footer { background: var(--char); color: var(--muted-on-dark); padding-block: 3rem 1.4rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.site-footer .brand img { height: 72px; }
.site-footer h2 { font-family: var(--font-body); font-size: var(--fs-eyebrow); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; margin-bottom: 0.8rem; }
.site-footer p { max-width: 36ch; }
.site-footer ul { list-style: none; padding: 0; display: grid; gap: 0.45rem; }
.site-footer a { color: var(--green-on-dark); text-decoration: none; font-weight: 600; }
.site-footer a:hover { color: #fff; }
.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  margin-top: 2.2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.95rem;
}
.standards { margin-top: 0.8rem; max-width: 46ch; }

.notfound { padding-block: clamp(4rem, 8vw, 7rem); }
.notfound .code {
  font-family: var(--font-head);
  font-size: clamp(4.5rem, 12vw, 8rem);
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: var(--green-ink);
}

@media (max-width: 1040px) {
  :root { --header-h: 72px; }
  .brand img { height: 34px; }
  .nav { position: relative; }
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    padding: 0.6rem 1.2rem 1.1rem;
    background: var(--paper);
    border-bottom: 3px solid var(--char);
  }
  .js .nav-menu[data-open="true"] { display: flex; }
  .no-js .nav-toggle { display: none; }
  .no-js .nav-menu { display: flex; position: static; border-bottom: 0; padding-inline: 0; }
  .nav-links { flex-direction: column; align-items: stretch; }
  .nav-links a { padding-inline: 0.2rem; }
  .nav-menu .btn { width: 100%; }
  .hero-grid, .split, .contact-grid, .grid-3, .service.has-photo,
  .service.has-photo:nth-of-type(even) { grid-template-columns: 1fr; }
  .service.has-photo .service-copy,
  .service.has-photo .photo,
  .service.has-photo:nth-of-type(even) .service-copy,
  .service.has-photo:nth-of-type(even) .photo { grid-column: 1; }
  .proof { grid-template-columns: 1fr 1fr; }
  .proof li:nth-child(odd) { border-left: 0; }
  .proof li:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .rail { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .site-footer .brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .proof, .rail, .footer-grid { grid-template-columns: 1fr; }
  .rail li { border-left: 0; border-top: 2px solid var(--char); padding-left: 0; }
  .proof li { border-left: 0; border-top: 1px solid var(--line); }
  .proof li:first-child { border-top: 0; }
  .actions .btn { width: 100%; }
  .footer-base { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Gallery lightbox. No .gallery is published.
   The engine stays so a real project grid can be added later. */
.js .gallery a { cursor: zoom-in; }
.lb-lock { overflow: hidden; }
.lb { position: fixed; inset: 0; z-index: 1000; display: flex; flex-direction: column; gap: 0.5rem; background: var(--lb-bg); padding: clamp(0.6rem, 0.3rem + 1vw, 1.1rem); }
.lb[hidden] { display: none; }
.lb:focus { outline: none; }
.lb-toolbar { flex: none; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.lb-counter { font-size: 0.95rem; font-weight: 600; color: var(--lb-muted); font-variant-numeric: tabular-nums; }
.lb-tools { display: flex; align-items: center; gap: 0.4rem; }
.lb-btn { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; padding: 0; border-radius: 999px; border: 1px solid rgba(255, 255, 255, 0.16); background: rgba(255, 255, 255, 0.06); color: #fff; cursor: pointer; }
.lb-btn:hover { background: rgba(255, 255, 255, 0.14); border-color: var(--lb-accent); }
.lb-btn svg { width: 20px; height: 20px; }
.lb-main { position: relative; flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; }
.lb-stage { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 0.7rem; max-width: 100%; }
.lb-imgwrap { display: inline-block; max-width: 100%; overflow: hidden; line-height: 0; background: var(--lb-tile); }
.lb-img { display: block; max-width: 100%; max-height: calc(100dvh - 210px); width: auto; height: auto; object-fit: contain; }
.lb-caption { color: var(--lb-muted); font-size: 0.95rem; text-align: center; max-width: 62ch; }
.lb-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 52px; height: 52px; padding: 0; border-radius: 999px; border: 1px solid rgba(255, 255, 255, 0.18); background: rgba(16, 22, 18, 0.72); color: #fff; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
.lb-nav:hover { border-color: var(--lb-accent); }
.lb-nav svg { width: 26px; height: 26px; }
.lb-prev { left: 0.4rem; }
.lb-next { right: 0.4rem; }
.lb-thumbs { flex: none; display: flex; gap: 0.5rem; overflow-x: auto; padding: 0.3rem 0.2rem; }
.lb-thumb { flex: none; width: 88px; height: 62px; padding: 0; border: 2px solid transparent; overflow: hidden; background: var(--lb-tile); cursor: pointer; opacity: 0.55; }
.lb-thumb img { width: 100%; height: 100%; object-fit: cover; }
.lb-thumb[aria-current="true"] { opacity: 1; border-color: var(--lb-accent); }
@media (prefers-reduced-motion: no-preference) {
  .lb-img.is-zooming { animation: lb-kenburns 7s var(--ease) both; }
}
@keyframes lb-kenburns { from { transform: scale(1); } to { transform: scale(1.07); } }