/* ==============================================================================
   Product pages (/argus, /os) — shared styles. Direction: DESIGN.md ("editorial
   paper + saturated signal panels", from design-refs/). Loads AFTER /styles.css
   and reuses its tokens, header, buttons, process-list, book-card, and footer.
   All selectors are .ar- scoped (page shell: body.page-product).
   ============================================================================== */

:root {
  --ar-violet: #2f1d60;
  --ar-violet-ink: #f1edfb;
  --ar-violet-soft: #b9aade;
  --ar-yellow: #fcc200;
  --ar-orange: #e8820a;
  --ar-card: #16112a;
  --ar-card-line: #2c2347;
  --ar-card-ink: #ece8f8;
  --ar-card-muted: #a89fc6;
  --ar-green: #2c8f66;
  --ar-red: #c04a44;
  --ar-gold: #8a6a00;
  --ar-font-display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --ar-font-mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;
  --ar-grain: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
}

.page-product h1,
.page-product h2,
.page-product h3 {
  font-family: var(--ar-font-display);
}

/* ---------- Mono kicker — used ONLY on the saturated product panels ---------- */
.ar-kicker {
  margin: 0 0 1.1rem;
  font-family: var(--ar-font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.ar-kicker::before {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  margin-right: 0.6em;
  vertical-align: 6%;
  background: var(--kicker-square, var(--brand-orange));
}

/* ---------- Hero: paper, soft brand wash ---------- */
.ar-hero {
  position: relative;
  isolation: isolate;
  overflow: clip;
  padding: clamp(3.5rem, 7vw, 6rem) 20px clamp(3rem, 6vw, 5rem);
}

.ar-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(640px 480px at 8% -12%, oklch(0.862 0.176 91.5 / 0.34), transparent 58%),
    radial-gradient(720px 560px at 96% -18%, oklch(0.5 0.16 296 / 0.22), transparent 60%),
    radial-gradient(540px 460px at 84% 62%, oklch(0.748 0.158 71.9 / 0.13), transparent 58%);
}

.ar-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.045;
  mix-blend-mode: multiply;
  background-image: var(--ar-grain);
  pointer-events: none;
}

.ar-hero-grid {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

/* Single-column centered hero (the OS page) */
.ar-hero-center {
  width: min(var(--reading), 100%);
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ar-hero-center .ar-hero-text {
  margin-inline: auto;
  max-width: 56ch;
}

.ar-hero-center .ar-hero-actions {
  justify-content: center;
}

.ar-hero-copy .ar-kicker,
.ar-hero-center .ar-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
}

.ar-hero-copy .ar-kicker::before,
.ar-hero-center .ar-kicker::before {
  display: none;
}

.ar-hero h1 {
  margin: 0;
  max-width: 15ch;
  color: var(--ink-strong);
  font-size: clamp(2.6rem, 5.4vw, 4.35rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.ar-hero-text {
  margin: 1.4rem 0 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.65;
  text-wrap: pretty;
}

.ar-hero-actions {
  margin-top: 2rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.ar-hero-note {
  margin: 1.1rem 0 0;
  font-family: var(--ar-font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

/* Info banner (the OS "early look" note) */
.ar-status {
  margin: 1.6rem auto 0;
  max-width: 62ch;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  padding: 0.85rem 1.1rem;
  font-size: 0.95rem;
  color: var(--ink);
  text-wrap: pretty;
}

.ar-status strong {
  color: var(--ink-strong);
}

/* The stage: real UI fragments floating at angles */
.ar-stage {
  position: relative;
  min-height: clamp(380px, 40vw, 520px);
  perspective: 1200px;
}

.ar-stage-group {
  position: absolute;
  inset: 0;
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transform-style: preserve-3d;
  will-change: transform;
}

.ar-stage .ar-sig,
.ar-stage .ar-receipt {
  position: absolute;
  box-shadow: 0 30px 60px oklch(0.22 0.08 290 / 0.28);
}

.ar-stage .ar-sig--drop  { top: 2%;  left: 0;   width: min(78%, 380px); transform: rotate(-2.2deg) translateZ(30px); }
.ar-stage .ar-receipt    { top: 24%; right: 0;  width: min(88%, 420px); transform: rotate(1.4deg)  translateZ(55px); z-index: 2; }
.ar-stage .ar-sig--tier  { bottom: 4%; left: 4%; width: min(74%, 360px); transform: rotate(1.8deg) translateZ(20px); }

.ar-scribble {
  position: absolute;
  z-index: 3;
  left: 0;
  top: 44%;
  width: 126px;
  color: var(--ink-strong);
  font-family: var(--ar-font-display);
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.35;
  transform: rotate(-4deg);
}

.ar-scribble svg {
  display: block;
  margin: 0.4rem 0 0 2.2rem;
  width: 56px;
  height: 40px;
}

/* ---------- Signal rows and the receipt: the product, rebuilt in HTML ---------- */
.ar-sig {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  background: var(--ar-card);
  border: 1px solid var(--ar-card-line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
}

.ar-badge {
  flex: none;
  margin-top: 0.15rem;
  font-family: var(--ar-font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.28rem 0.5rem;
  border-radius: 4px;
}

.ar-sig[data-kind="drop"] .ar-badge { background: #3b1a1e; color: #ff9d96; }
.ar-sig[data-kind="add"]  .ar-badge { background: #12301f; color: #6fd3a3; }
.ar-sig[data-kind="tier"] .ar-badge { background: #33290a; color: #fcc200; }

.ar-sig-h {
  margin: 0;
  color: var(--ar-card-ink);
  font-size: 0.92rem;
  font-weight: 650;
  line-height: 1.35;
  text-wrap: pretty;
}

.ar-sig-m {
  margin: 0.3rem 0 0;
  font-family: var(--ar-font-mono);
  font-size: 0.72rem;
  color: var(--ar-card-muted);
}

.ar-sig-m .ar-anchored {
  font-style: normal;
  color: #6fd3a3;
}

.ar-sig-m .ar-anchored::before {
  content: "● ";
  font-size: 0.6em;
  vertical-align: 20%;
}

.ar-receipt {
  background: var(--ar-card);
  border: 1px solid var(--ar-card-line);
  border-radius: 14px;
  padding: 1.1rem 1.2rem 1.2rem;
}

.ar-receipt-head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0 0 0.8rem;
  font-family: var(--ar-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ar-card-ink);
}

.ar-receipt-head .ar-anchored {
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #6fd3a3;
}

.ar-receipt-title {
  margin: 0 0 0.9rem;
  color: var(--ar-card-ink);
  font-size: 0.95rem;
  font-weight: 650;
  line-height: 1.4;
  text-wrap: pretty;
}

.ar-receipt dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.42rem 1.1rem;
  font-size: 0.8rem;
}

.ar-receipt dt {
  font-family: var(--ar-font-mono);
  color: var(--ar-card-muted);
}

.ar-receipt dd {
  margin: 0;
  color: var(--ar-card-ink);
  font-family: var(--ar-font-mono);
}

.ar-receipt dd a {
  color: #8fb8f5;
  text-decoration: none;
}

.ar-receipt-foot {
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--ar-card-line);
  font-size: 0.8rem;
  color: var(--ar-card-muted);
}

/* ---------- The live ticker ---------- */
.ar-ticker {
  border-block: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  padding: 0.7rem 0;
}

.ar-ticker-track {
  display: flex;
  gap: 2.6rem;
  width: max-content;
  animation: ar-marquee 90s linear infinite;
}

.ar-ticker:hover .ar-ticker-track {
  animation-play-state: paused;
}

.ar-ticker ul {
  display: flex;
  gap: 2.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.ar-ticker li {
  font-family: var(--ar-font-mono);
  font-size: 0.8rem;
  color: var(--ink);
}

.ar-ticker li::before {
  content: "●";
  margin-right: 0.55em;
  font-size: 0.7em;
  vertical-align: 12%;
}

.ar-ticker li[data-kind="drop"]::before { color: var(--ar-red); }
.ar-ticker li[data-kind="add"]::before  { color: var(--ar-green); }
.ar-ticker li[data-kind="tier"]::before { color: var(--ar-gold); }

@keyframes ar-marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(-50% - 1.3rem)); }
}

/* ---------- Centered editorial blocks (match the homepage's rhythm) ---------- */
.ar-section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.ar-section--tight {
  padding-top: clamp(2rem, 4.5vw, 3.5rem);
}

.ar-prose {
  max-width: var(--reading);
  margin: 0 auto;
  text-align: center;
}

.ar-prose h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.ar-prose p {
  margin: 1.25rem auto 0;
  max-width: 64ch;
  color: var(--ink);
  font-size: clamp(1.02rem, 1.4vw, 1.14rem);
  line-height: 1.75;
  text-wrap: pretty;
}

/* Cited research: display figures over hairlines, one row of four */
.ar-research {
  list-style: none;
  max-width: min(1100px, 100%);
  margin: clamp(2.2rem, 5vw, 3.4rem) auto 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 clamp(1.2rem, 2.5vw, 2.4rem);
  text-align: center;
}

@media (max-width: 899px) {
  .ar-research {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .ar-research {
    grid-template-columns: 1fr;
  }
}

.ar-research li {
  border-top: 1px solid var(--line);
  padding: 1.3rem 0 1.5rem;
}

.ar-figure {
  display: block;
  font-family: var(--ar-font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 2.8vw, 2.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
}

.ar-research li p {
  margin: 0.55rem auto 0;
  max-width: 30ch;
  color: var(--muted);
  font-size: 0.95rem;
  text-wrap: pretty;
}

.ar-research li a {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--ar-font-mono);
  font-size: 0.76rem;
  color: var(--muted);
}

.ar-research li a:hover {
  color: var(--brand-purple);
}

/* ---------- Saturated art panels ---------- */
.ar-panel {
  position: relative;
  isolation: isolate;
  overflow: clip;
  width: min(1240px, calc(100% - 40px));
  margin: clamp(1.2rem, 2.5vw, 2rem) auto;
  border-radius: 22px;
  padding: clamp(2.2rem, 4.5vw, 4rem);
}

.ar-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.07;
  background-image: var(--ar-grain);
  pointer-events: none;
}

.ar-panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 4.5vw, 4rem);
  align-items: center;
}

.ar-panel h3 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.ar-panel-copy p {
  margin: 1rem 0 0;
  max-width: 48ch;
  font-size: 1.02rem;
  line-height: 1.7;
  text-wrap: pretty;
}

/* Violet */
.ar-panel--violet {
  background: var(--ar-violet);
  color: var(--ar-violet-soft);
}

.ar-panel--violet h3 { color: var(--ar-violet-ink); }
.ar-panel--violet .ar-panel-copy p { color: var(--ar-violet-soft); }
.ar-panel--violet .ar-kicker { color: var(--ar-violet-soft); --kicker-square: var(--ar-yellow); }

.ar-panel--violet .ar-feed {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ar-panel--violet .ar-sig {
  box-shadow: 0 14px 34px oklch(0.15 0.08 295 / 0.35);
}

/* Yellow */
.ar-panel--yellow {
  background: var(--ar-yellow);
  color: #4c3a10;
}

.ar-panel--yellow h3 { color: var(--ar-violet); }
.ar-panel--yellow .ar-panel-copy p { color: #533f0d; }
.ar-panel--yellow .ar-kicker { color: #6a5310; --kicker-square: var(--ar-violet); }

.ar-panel--yellow .ar-receipt {
  max-width: 460px;
  justify-self: center;
  transform: rotate(-1.3deg);
  box-shadow: 0 34px 70px oklch(0.4 0.12 85 / 0.45);
}

/* Lilac */
.ar-panel--lilac {
  background: var(--brand-purple-soft);
  color: var(--ink);
}

.ar-panel--lilac h3 { color: var(--ink-strong); }
.ar-panel--lilac .ar-panel-copy p { color: var(--ink); }
.ar-panel--lilac .ar-kicker { --kicker-square: var(--brand-purple); }

/* Paper */
.ar-panel--paper {
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--ink);
}

.ar-panel--paper::after { display: none; }
.ar-panel--paper h3 { color: var(--ink-strong); }
.ar-panel--paper .ar-kicker { --kicker-square: var(--ar-orange); }
.ar-panel--paper .ar-panel-grid { grid-template-columns: 1fr; }

.ar-shot {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid oklch(0.3 0.06 292 / 0.35);
  box-shadow: 0 22px 50px oklch(0.22 0.08 290 / 0.22);
  background: #0d0a17;
}

.ar-shot img {
  display: block;
  width: 100%;
  height: auto;
}

.ar-panel--paper .ar-shot {
  margin-top: clamp(1.6rem, 3vw, 2.4rem);
}

/* ---------- Honest counts: thin-border cells, centered ---------- */
.ar-counts {
  max-width: var(--reading);
  margin: clamp(2rem, 4vw, 3rem) auto 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  text-align: center;
}

.ar-counts > div {
  padding: 1.4rem 1.2rem 1.5rem;
  border-left: 1px solid var(--line);
}

.ar-counts > div:first-child {
  border-left: 0;
}

.ar-counts dt {
  font-family: var(--ar-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.ar-counts dd {
  margin: 0.35rem 0 0;
  font-family: var(--ar-font-display);
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
  font-variant-numeric: tabular-nums;
}

.ar-counts-note {
  margin-top: 0.8rem;
  font-family: var(--ar-font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-align: center;
}

/* ---------- Compact honesty strip ---------- */
.ar-honest {
  max-width: var(--reading);
  margin: clamp(2rem, 4vw, 3rem) auto 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0 clamp(1.2rem, 2.5vw, 2.2rem);
  text-align: center;
}

.ar-honest li {
  border-top: 1px solid var(--line);
  padding: 1.1rem 0 1.3rem;
}

.ar-honest strong {
  display: block;
  font-family: var(--ar-font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink-strong);
}

.ar-honest span {
  display: block;
  margin: 0.35rem auto 0;
  max-width: 26ch;
  font-size: 0.92rem;
  color: var(--muted);
  text-wrap: pretty;
}

/* ---------- Agent rows (the OS page) ---------- */
.ar-agents {
  list-style: none;
  padding: 0;
  margin: clamp(2.2rem, 5vw, 3.5rem) auto 0;
  max-width: var(--reading);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ar-agent {
  display: flex;
  align-items: flex-start;
  gap: clamp(1.2rem, 3vw, 2rem);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 1px 3px oklch(0.2 0.07 290.2 / 0.05);
  padding: clamp(1.4rem, 3vw, 2rem) clamp(1.4rem, 3.5vw, 2.4rem);
  text-align: left;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.ar-agent:hover {
  border-color: var(--agent-hue, var(--brand-purple));
  box-shadow: var(--shadow-card);
}

.ar-agent-mark {
  flex: none;
  width: 2.9rem;
  height: 2.9rem;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in oklab, var(--agent-hue, var(--brand-purple)) 14%, white);
  color: var(--agent-hue, var(--brand-purple));
  font-family: var(--ar-font-display);
  font-weight: 800;
  font-size: 1.3rem;
}

.ar-agent[data-a="artemis"] { --agent-hue: oklch(0.5 0.16 296); }
.ar-agent[data-a="athena"]  { --agent-hue: oklch(0.42 0.15 290.2); }
.ar-agent[data-a="hermes"]  { --agent-hue: oklch(0.59 0.14 71.9); }
.ar-agent[data-a="argus"]   { --agent-hue: oklch(0.62 0.13 85); }

.ar-agent h3 {
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 760;
  line-height: 1.2;
}

.ar-agent h3 span {
  color: var(--muted);
  font-weight: 600;
}

.ar-agent p {
  margin: 0.5rem 0 0;
  max-width: 60ch;
  color: var(--muted);
  text-wrap: pretty;
}

.ar-agent a {
  font-weight: 650;
  color: var(--brand-purple);
}

/* ---------- Responsive ---------- */
@media (max-width: 899px) {
  .ar-hero-grid,
  .ar-panel-grid {
    grid-template-columns: 1fr;
  }

  .ar-stage {
    min-height: 0;
    margin-top: 1rem;
    perspective: none;
  }

  .ar-stage-group {
    position: static;
    transform: none;
    display: grid;
    gap: 0.9rem;
  }

  .ar-stage .ar-sig,
  .ar-stage .ar-receipt {
    position: static;
    width: 100%;
  }

  .ar-stage .ar-sig--drop  { transform: rotate(-0.8deg); }
  .ar-stage .ar-receipt    { transform: rotate(0.6deg); }
  .ar-stage .ar-sig--tier  { transform: rotate(0.8deg); }

  .ar-scribble {
    display: none;
  }

  .ar-counts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ar-counts > div:nth-child(odd) {
    border-left: 0;
  }

  .ar-counts > div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .ar-agent {
    flex-direction: column;
    gap: 0.9rem;
  }
}

@media (max-width: 480px) {
  .ar-hero-actions .button {
    width: 100%;
  }

  .ar-counts {
    grid-template-columns: 1fr;
  }

  .ar-counts > div {
    border-left: 0;
  }

  .ar-counts > div + div {
    border-top: 1px solid var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ar-ticker-track {
    animation: none;
  }

  .ar-ticker {
    overflow-x: auto;
  }
}