/* A2Ai Markets — clean, editorial, one accent */
:root {
  --paper: #fbfaf8;
  --tint: #f3f1ec;
  --ink: #10141b;
  --ink-2: #171c25;
  --text: #12161d;
  --muted: #646b77;
  --line: #e4e0d8;
  --line-dark: rgba(255, 255, 255, 0.1);
  --on-dark: #eef0f3;
  --on-dark-2: #9ba2ad;
  --accent: #c25a24;
  --accent-light: #e08a57;
  --serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  --max: 1120px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { font-family: var(--sans); font-size: 16px; line-height: 1.65; color: var(--text); background: var(--paper); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 32px; }
.section { padding: 120px 0; }
.tint { background: var(--tint); }
.dark { background: var(--ink); color: var(--on-dark); }

/* Type */
h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.9rem, 6.4vw, 5.2rem); line-height: 1.03; margin-bottom: 28px; }
h2 { font-size: clamp(2.1rem, 4vw, 3.2rem); line-height: 1.1; margin-bottom: 20px; }
h3 { font-size: 1.4rem; line-height: 1.25; letter-spacing: -0.01em; margin-bottom: 12px; }
.eyebrow { font-size: 0.76rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }
.dark .eyebrow { color: var(--accent-light); }
.lede { font-size: 1.12rem; color: var(--muted); max-width: 640px; }
.dark .lede { color: var(--on-dark-2); }
.head { margin-bottom: 64px; }

/* Buttons */
.btn { display: inline-block; font-size: 0.95rem; font-weight: 500; padding: 13px 24px; border-radius: 6px; transition: background .2s, transform .2s var(--ease); }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #a94b1b; }
.link-arrow { font-size: 0.95rem; font-weight: 500; color: var(--on-dark); }
.link-arrow span { display: inline-block; transition: transform .2s var(--ease); }
.link-arrow:hover span { transform: translateX(3px); }

/* Nav */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 50; transition: background .3s, border-color .3s; border-bottom: 1px solid transparent; }
.nav.scrolled { background: rgba(16, 20, 27, 0.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom-color: var(--line-dark); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { font-weight: 600; font-size: 0.98rem; letter-spacing: 0.08em; color: var(--on-dark); }
.nocase { text-transform: none; }
.brand span { color: var(--on-dark-2); font-weight: 500; }
.nav-links { display: flex; gap: 34px; }
.nav-links a, .nav-cta { font-size: 0.9rem; color: var(--on-dark-2); transition: color .2s; }
.nav-links a:hover, .nav-cta:hover { color: #fff; }
.nav-cta { color: var(--on-dark); border: 1px solid rgba(255,255,255,.22); padding: 7px 14px; border-radius: 6px; }
.nav-cta:hover { border-color: rgba(255,255,255,.5); }

/* Hero */
.hero { background: var(--ink); color: var(--on-dark); padding: 184px 0 72px; }
.hero h1 { max-width: 900px; }
.hero-sub { font-size: 1.2rem; color: var(--on-dark-2); max-width: 640px; margin-bottom: 16px; }
.hero-origin { font-family: var(--serif); font-style: italic; font-size: 1.15rem; color: var(--accent-light); margin-bottom: 40px; }
.hero-actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; margin-bottom: 112px; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-dark); }
.fact { padding: 32px 32px 0 0; }
.fact + .fact { padding-left: 32px; border-left: 1px solid var(--line-dark); }
.fact-num { display: block; font-family: var(--serif); font-size: 2.7rem; line-height: 1; color: var(--accent-light); margin-bottom: 14px; letter-spacing: -0.02em; }
.fact p { font-size: 0.93rem; color: var(--on-dark-2); max-width: 300px; }
.sources { margin-top: 40px; font-size: 0.78rem; color: #6c7380; }

/* Generic columns */
.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.cols-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.item { border-top: 1px solid var(--line); padding-top: 28px; }
.item p { color: var(--muted); }
.item-label { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent) !important; margin-bottom: 14px; }
.dark .item { border-top-color: var(--line-dark); }
.dark .item p { color: var(--on-dark-2); }
.dark .item-label { color: var(--accent-light) !important; }

/* Statement */
.statement { margin-top: 96px; padding-top: 48px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.statement-big { font-family: var(--serif); font-size: clamp(1.7rem, 2.8vw, 2.3rem); line-height: 1.2; letter-spacing: -0.015em; }
.statement p:not(.statement-big) { color: var(--muted); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(6, 1fr); margin-bottom: 40px; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding-top: 22px; font-size: 0.95rem; font-weight: 500; border-top: 2px solid var(--line); }
.steps li::before { content: '0' counter(step); position: absolute; top: -26px; left: 0; font-size: 0.72rem; color: var(--muted); letter-spacing: 0.08em; }
.steps li.is-key { border-top-color: var(--accent); color: var(--accent); }

/* Screenshots */
.shot { margin: 0 0 64px; }
.shot img { border-radius: 12px; border: 1px solid rgba(16,20,27,.12); box-shadow: 0 2px 4px rgba(16,20,27,.04), 0 30px 70px -30px rgba(16,20,27,.35); }
.shot figcaption { margin-top: 16px; font-size: 0.92rem; color: var(--muted); }
.shot figcaption strong { color: var(--text); font-weight: 600; }
.shots-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 80px; }
.shot-sm { margin-bottom: 0; }
.shot-sm img { aspect-ratio: 2.8 / 1; object-fit: cover; object-position: top left; width: 100%; box-shadow: 0 20px 50px -28px rgba(16,20,27,.4); }

/* Rows (four areas) */
.rows { border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 5fr 6fr; gap: 64px; padding: 36px 0; border-bottom: 1px solid var(--line); }
.row h3 { margin-bottom: 8px; }
.row-sub { font-size: 0.9rem; color: var(--accent); }
.row > p { color: var(--muted); padding-top: 4px; }

/* Architecture */
.arch { display: flex; flex-direction: column; gap: 28px; }
.arch-row { display: grid; grid-template-columns: 200px 1fr; gap: 32px; align-items: center; }
.arch-label { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--on-dark-2); }
.arch-label em { font-style: normal; color: var(--accent-light); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { font-size: 0.88rem; padding: 8px 14px; border-radius: 6px; border: 1px solid var(--line-dark); color: var(--on-dark); background: rgba(255,255,255,.02); }
.chips-dashed span { border-style: dashed; color: var(--on-dark-2); background: transparent; }
.core { border: 1px solid rgba(224,138,87,.35); border-radius: 12px; padding: 24px; background: rgba(194,90,36,.06); }
.core .arch-label { display: block; color: var(--accent-light); margin-bottom: 18px; }
.core-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.core-grid strong { display: block; font-family: var(--serif); font-weight: 400; font-size: 1.12rem; margin-bottom: 6px; }
.core-grid p { font-size: 0.86rem; color: var(--on-dark-2); }
.fit { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--line-dark); color: var(--on-dark-2); font-size: 1.08rem; max-width: 760px; }
.fit strong { color: var(--on-dark); font-weight: 500; }

/* Suite */
.module-label { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.module ul { margin-bottom: 16px; }
.module li { font-family: var(--serif); font-size: 1.08rem; padding: 6px 0; }
.module-desc { font-size: 0.9rem; color: var(--muted); }
.note { margin-top: 56px; color: var(--muted); }
.note strong { color: var(--text); font-weight: 600; }

/* Engagement */
.closing { margin-top: 104px; padding-top: 56px; border-top: 1px solid var(--line-dark); }
.closing-line { font-family: var(--serif); font-size: clamp(1.8rem, 3.4vw, 2.7rem); line-height: 1.2; letter-spacing: -0.015em; margin-bottom: 20px; }
.closing-line em { font-style: italic; color: var(--accent-light); }
.closing-sub { color: var(--on-dark-2); margin-bottom: 36px; }

/* Footer */
.footer { background: var(--ink); color: var(--on-dark-2); border-top: 1px solid var(--line-dark); font-size: 0.88rem; }
.footer-inner { display: flex; align-items: center; gap: 32px; height: 84px; }
.footer-inner .brand { margin-right: auto; font-size: 0.88rem; }
.footer-inner a:not(.brand):hover { color: #fff; }

/* Reveal */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 960px) {
  .section { padding: 88px 0; }
  .nav-links { display: none; }
  .cols-3, .statement, .row, .shots-2 { grid-template-columns: 1fr; gap: 28px; }
  .cols-4 { grid-template-columns: 1fr 1fr; }
  .core-grid { grid-template-columns: 1fr 1fr; }
  .arch-row { grid-template-columns: 1fr; gap: 12px; }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 44px; }
  .statement { margin-top: 64px; }
}
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .hero { padding-top: 140px; }
  .hero-actions { margin-bottom: 72px; }
  .facts { grid-template-columns: 1fr; }
  .fact, .fact + .fact { padding: 24px 0; border-left: 0; }
  .fact + .fact { border-top: 1px solid var(--line-dark); }
  .cols-4, .core-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-wrap: wrap; height: auto; padding: 28px 20px; gap: 12px 24px; }
  .footer-inner .brand { width: 100%; }
}