/* ExactMark — Architecture & design studios
   Monochrome editorial gallery. Inter throughout (headings 600, -0.03em), Manrope for numerals only.
   Lime is used solely for tiny marks: dots, an underline, the match-tag border. */

:root {
  --bg: #ffffff;
  --surface: #f5f5f5;
  --text: #111111;
  --muted: #666666;
  --line: #e2e2e2;
  --accent: #111111;
  --lime: #c8f04a;
  --radius: 2px;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-num: "Manrope", "Inter", system-ui, sans-serif;
  --wrap: 1200px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(2.2rem, 4.2vw, 3.2rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.1rem; letter-spacing: -0.02em; }
p { margin: 0 0 1em; }
a { color: inherit; }
code {
  font: 500 .86em/1.4 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  background: var(--surface);
  padding: .1em .4em;
  border-radius: var(--radius);
}
img { display: block; }
:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
}
.wrap { width: min(var(--wrap), calc(100% - 64px)); margin: 0 auto; }
.rule { border: 0; height: 1px; margin: 0; background: var(--line); }

/* ---------- Shared components ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font: 500 .76rem/1 var(--font-body);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.4em;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; background: var(--lime); border-radius: 50%; }
.numeral {
  font: 300 3.6rem/1 var(--font-num);
  letter-spacing: -0.04em;
  color: var(--text);
  display: block;
}
.numeral.small { font-size: 1.4rem; font-weight: 400; color: var(--muted); margin-bottom: 1.2rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 1em 1.6em;
  background: var(--accent);
  color: #fff;
  font: 600 .95rem/1 var(--font-body);
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: background-color .18s ease;
}
.btn:hover { background: #333333; }
.btn-sm { padding: .72em 1.15em; font-size: .88rem; }
.btn-light { background: #fff; color: var(--text); }
.btn-light:hover { background: var(--surface); }
.text-link {
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
  padding-bottom: 1px;
}
.text-link::after { content: " →"; }
.text-link-light { color: #fff; }
.section-head { max-width: 640px; margin-bottom: 3.5rem; }
.section-head h2 { margin-bottom: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 2rem; min-height: 68px; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  font: 600 1.05rem/1 var(--font-body);
  letter-spacing: -0.03em;
}
.brand img { width: 24px; height: 24px; }
.site-nav { display: flex; gap: 2rem; margin-left: auto; }
.site-nav a { text-decoration: none; font-size: .9rem; font-weight: 500; color: var(--muted); }
.site-nav a:hover { color: var(--text); }

/* ---------- Hero: asymmetric ---------- */
.hero { padding: 6rem 0 5.5rem; }
.hero-grid {
  display: grid;
  grid-template-columns: 38fr 62fr;
  gap: 4rem;
  align-items: end;
}
.hero-copy { min-width: 0; }
.lede { color: var(--muted); font-size: 1.05rem; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.6rem; }
.trust-line {
  list-style: none;
  margin: 2.2rem 0 0;
  padding: 1.2rem 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.2rem;
  font-size: .84rem;
  color: var(--muted);
}
.trust-line li { display: inline-flex; align-items: center; gap: .5em; }
.trust-line li::before { content: ""; width: 4px; height: 4px; background: var(--lime); border-radius: 50%; }

/* ---------- Hero visual: render frame ---------- */
.render { margin: 0; }
.render-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #d9d9d9;
  border: 1px solid var(--line);
}
.sky {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, #f2f2f2 0%, #dcdcdc 55%, #c4c4c4 100%);
}
.blocks {
  position: absolute;
  left: 6%; right: 6%; bottom: 14%;
  height: 72%;
  display: flex;
  align-items: flex-end;
  gap: 2.5%;
}
.b {
  display: block;
  flex: 1;
  background: linear-gradient(180deg, #8a8a8a, #5c5c5c);
  background-image:
    repeating-linear-gradient(180deg, rgba(255, 255, 255, .18) 0 2px, transparent 2px 11px),
    linear-gradient(180deg, #8a8a8a, #5c5c5c);
  box-shadow: inset -6px 0 0 rgba(0, 0, 0, .18);
  animation: rise 1.1s cubic-bezier(.2, .7, .2, 1) both;
  transform-origin: bottom;
}
.b1 { height: 46%; }
.b2 { height: 70%; animation-delay: .05s; }
.b3 { height: 100%; flex: 1.4; background-image: repeating-linear-gradient(180deg, rgba(255, 255, 255, .22) 0 2px, transparent 2px 9px), linear-gradient(180deg, #a3a3a3, #6a6a6a); animation-delay: .1s; }
.b4 { height: 58%; animation-delay: .15s; }
.b5 { height: 82%; flex: .9; animation-delay: .2s; }
.b6 { height: 38%; flex: .8; animation-delay: .25s; }
.b7 { height: 64%; animation-delay: .3s; }
.ground {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 14%;
  background: linear-gradient(180deg, #9b9b9b, #7a7a7a);
}
.render-mark {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, rgba(17, 17, 17, .5) 1px, transparent 1.5px);
  background-size: 18px 18px;
  opacity: .14;
  animation: mark-drift 18s linear infinite;
}
.match-tag {
  position: absolute;
  left: 1rem; bottom: 1rem;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: .55em;
  padding: .55em .8em;
  background: rgba(17, 17, 17, .92);
  color: #fff;
  border: 1px solid var(--lime);
  border-radius: var(--radius);
  font-size: .76rem;
  letter-spacing: .01em;
  animation: fade-in .8s .5s ease-out both;
}
.match-tag strong { font-weight: 600; }
.lime-dot { width: 6px; height: 6px; background: var(--lime); border-radius: 50%; }
.render-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0 0;
  border-bottom: 1px solid var(--text);
  padding-bottom: .8rem;
  font-size: .78rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Value strip ---------- */
.value-strip { padding: 4rem 0; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem; }
.value-grid h3 { font-size: 1rem; margin-bottom: .5em; }
.value-grid p { font-size: .93rem; color: var(--muted); margin: 0; }

/* ---------- Scenario (problem → solution) ---------- */
.scenario { padding: 7rem 0; }
.scenario-grid { display: grid; grid-template-columns: 38fr 62fr; gap: 4rem; align-items: start; }
.scenario-lead h2 { margin-bottom: 0; }
.scenario-body { max-width: 640px; }
.scenario-body > p { color: var(--muted); }
.answer { margin-top: 2.5rem; padding: 2rem; background: var(--surface); }
.answer h3::before { content: ""; display: inline-block; width: 8px; height: 8px; background: var(--lime); margin-right: .7em; border-radius: 50%; }
.answer p { margin: 0; color: var(--text); }

/* ---------- How it works ---------- */
.how { padding: 7rem 0; }
.steps {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.steps li { padding: 2rem 2rem 0 0; border-right: 1px solid var(--line); margin-right: 2rem; }
.steps li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.steps .numeral { margin-bottom: 1.4rem; }
.steps p { color: var(--muted); font-size: .96rem; margin: 0; }

/* ---------- Capabilities ---------- */
.capabilities { padding: 7rem 0; }
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.cap-grid article { background: var(--bg); padding: 2rem 1.8rem 2.2rem; }
.cap-grid article:hover { background: var(--surface); }
.cap-grid p { color: var(--muted); font-size: .94rem; margin: 0; }
.aside-note { margin: 2.5rem 0 0; max-width: 760px; color: var(--muted); font-size: .95rem; }

/* ---------- FAQ: two-column definition list ---------- */
.faq { padding: 7rem 0; }
.faq-list {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
}
.faq-list > div { border-top: 1px solid var(--text); padding-top: 1.2rem; }
.faq-list dt { font-weight: 600; letter-spacing: -0.02em; font-size: 1.05rem; margin-bottom: .6rem; }
.faq-list dd { margin: 0; color: var(--muted); font-size: .97rem; }

/* ---------- Final CTA ---------- */
.cta-band { background: var(--text); color: #fff; padding: 6rem 0; }
.cta-inner { max-width: 640px; }
.cta-inner h2 { color: #fff; }
.cta-inner p { color: rgba(255, 255, 255, .72); font-size: 1.08rem; margin-bottom: 2rem; }

/* ---------- Footer ---------- */
.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2rem; font-size: .88rem; color: var(--muted); }
.tagline { margin: 0; }
.footer-inner nav { display: flex; gap: 1.4rem; margin-left: auto; }
.footer-inner nav a { text-decoration: none; color: var(--muted); }
.footer-inner nav a:hover { color: var(--text); }

/* ---------- Motion ---------- */
@keyframes rise {
  from { transform: scaleY(.6); opacity: 0; }
  to { transform: none; opacity: 1; }
}
@keyframes mark-drift {
  from { background-position: 0 0; }
  to { background-position: 36px 18px; }
}
@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .site-nav { display: none; }
  .hero { padding: 4rem 0; }
  .hero-grid, .scenario-grid { grid-template-columns: 1fr; gap: 3rem; }
  .value-grid { grid-template-columns: 1fr; gap: 2rem; }
  .steps { grid-template-columns: 1fr; }
  .steps li { border-right: 0; margin-right: 0; padding: 2rem 0; border-bottom: 1px solid var(--line); }
  .steps li:last-child { border-bottom: 0; }
  .cap-grid { grid-template-columns: 1fr 1fr; }
  .faq-list { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .wrap { width: calc(100% - 32px); }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 1rem; }
  .btn { width: 100%; }
  .header-inner .btn { width: auto; margin-left: auto; }
  .text-link { text-align: center; }
  .render-caption { flex-direction: column; gap: .3rem; }
  .match-tag { font-size: .7rem; left: .6rem; bottom: .6rem; }
  .cap-grid { grid-template-columns: 1fr; }
  .scenario, .how, .capabilities, .faq { padding: 4rem 0; }
  .cta-band { padding: 4rem 0; }
  .answer { padding: 1.4rem; }
  .numeral { font-size: 2.8rem; }
  .footer-inner nav { margin-left: 0; flex-wrap: wrap; }
}