/* =====================================================================
   Clinkum — flat instrument design system.
   Hard rules: NO box-shadow, NO drop-shadow, NO CSS gradients anywhere.
   Depth comes from borders, solid fills, and opacity. Slate + kiln-ember.
   ===================================================================== */

:root {
  /* --- Slate ramp (cool, industrial) --- */
  --void:      oklch(0.15 0.012 245);
  --slate-950: oklch(0.185 0.014 245);
  --slate-900: oklch(0.222 0.015 245);
  --slate-850: oklch(0.262 0.016 245);
  --slate-800: oklch(0.31 0.017 246);
  --line:      oklch(0.34 0.016 246);
  --line-soft: oklch(0.3 0.016 246);

  /* --- Ink --- */
  --ink:       oklch(0.965 0.004 240);
  --ink-body:  oklch(0.865 0.008 242);
  --ink-muted: oklch(0.72 0.014 244);
  --ink-faint: oklch(0.6 0.014 245);

  /* --- Kiln-ember accent (committed brand) --- */
  --ember:     oklch(0.66 0.19 45);
  --ember-hot: oklch(0.8 0.16 62);
  --ember-deep:oklch(0.5 0.16 42);
  --ember-ink: oklch(0.18 0.05 45);
  --ember-tint:oklch(0.28 0.055 45);     /* solid tinted panel */
  --ember-tint-2:oklch(0.24 0.045 45);

  --good:      oklch(0.78 0.13 178);
  --good-tint: oklch(0.26 0.04 200);

  /* --- Type families --- */
  --f-display: 'Archivo', system-ui, sans-serif;
  --f-body:    'Hanken Grotesk', system-ui, sans-serif;
  --f-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* --- Type scale (fluid modular, ~1.25 ratio) --- */
  --fs-xs:   0.72rem;
  --fs-sm:   0.85rem;
  --fs-base: clamp(1rem, 0.96rem + 0.2vw, 1.07rem);
  --fs-md:   clamp(1.05rem, 0.98rem + 0.5vw, 1.28rem);
  --fs-lg:   clamp(1.28rem, 1.14rem + 0.7vw, 1.6rem);
  --fs-h3:   clamp(1.15rem, 1.06rem + 0.4vw, 1.34rem);
  --fs-h2:   clamp(1.8rem, 1.3rem + 2.2vw, 3rem);
  --fs-h1:   clamp(2.5rem, 1.6rem + 4.2vw, 5rem);

  /* --- Space scale (base 0.25rem) --- */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;

  --shell: 1220px;
  --shell-narrow: 820px;
  --gut: clamp(1.15rem, 4vw, 2.5rem);
  --radius: 12px;
  --radius-sm: 8px;
  --sp-section: clamp(3.5rem, 7vw, 7rem);

  /* --- Z-index scale (semantic) --- */
  --z-base: 1;
  --z-nav: 100;
  --z-dropdown: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* =============================== Reset =============================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--f-body);
  background: var(--slate-950);
  color: var(--ink-body);
  line-height: 1.6;
  font-size: var(--fs-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; color: inherit; }
ul { list-style: none; padding: 0; }

::selection { background: var(--ember); color: var(--ember-ink); }
:focus-visible { outline: 2px solid var(--ember-hot); outline-offset: 3px; border-radius: 4px; }

.shell { width: min(var(--shell), 100% - 2 * var(--gut)); margin-inline: auto; position: relative; z-index: 1; }
.shell--narrow { max-width: var(--shell-narrow); }

.skip-link {
  position: absolute; left: 12px; top: 12px; z-index: var(--z-overlay);
  background: var(--ember); color: var(--ember-ink);
  padding: 0.6rem 1rem; border-radius: var(--radius-sm); font-weight: 600;
  transform: translateY(-200%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* =============================== Type =============================== */
h1, h2, h3, h4 {
  font-family: var(--f-display); color: var(--ink);
  line-height: 1.05; letter-spacing: -0.02em; font-weight: 700; text-wrap: balance;
}
h1 { font-size: var(--fs-h1); letter-spacing: -0.035em; font-weight: 800; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.03em; font-weight: 800; }
h3 { font-size: var(--fs-h3); letter-spacing: -0.015em; }
h4 { font-size: 1rem; }
p { text-wrap: pretty; }

.split__label {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.02em;
  color: var(--ember-hot); margin-bottom: 1rem;
}
.split__label::before { content: ""; width: 24px; height: 1px; background: var(--ember); flex: none; }
.kicker {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); border: 1px solid var(--line); padding: 0.4rem 0.85rem;
  border-radius: 100px; background: var(--slate-900); margin-bottom: 1.5rem; max-width: 100%;
}
.pulse-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--ember-hot);
  animation: pulse 2s var(--ease) infinite; flex: none;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

.lede { font-size: var(--fs-md); color: var(--ink-body); max-width: 60ch; }

/* =============================== Buttons =============================== */
.btn {
  --pad: 0.72rem 1.15rem;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: var(--pad); border-radius: var(--radius-sm);
  font-family: var(--f-display); font-weight: 600; font-size: 0.94rem; letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: transform 0.18s var(--ease), background 0.2s var(--ease), border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn--lg { --pad: 0.95rem 1.6rem; font-size: 1rem; }
.btn--block { width: 100%; }
.btn:active { transform: translateY(1px); }
.btn--solid { background: var(--ember); color: var(--ember-ink); }
.btn--solid:hover { background: var(--ember-hot); transform: translateY(-2px); }
.btn--wire { border-color: var(--line); color: var(--ink); background: transparent; }
.btn--wire:hover { border-color: var(--ember); color: var(--ember-hot); transform: translateY(-2px); }
.btn--ghost { color: var(--ink-muted); }
.btn--ghost:hover { color: var(--ink); }

/* =============================== Nav =============================== */
.nav {
  position: sticky; top: 0; z-index: var(--z-nav);
  background: var(--slate-950); border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; gap: 1.4rem; height: 66px; position: relative; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; flex: none; }
.brand__mark { width: 27px; height: 27px; }
.brand__word { font-family: var(--f-display); font-weight: 700; font-size: 1.22rem; letter-spacing: -0.03em; color: var(--ink); }
.nav__links { display: flex; gap: 1.55rem; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); font-size: 0.9rem; color: var(--ink-muted); align-items: center; white-space: nowrap; }
.nav__cta { margin-left: auto; }
.nav__links a { position: relative; transition: color 0.18s; padding: 0.2rem 0; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a[aria-current="page"] { color: var(--ember-hot); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 1.5px; width: 100%;
  background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.25s var(--ease);
}
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { transform: scaleX(1); }
.nav__cta { display: flex; align-items: center; gap: 0.6rem; flex: none; }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; margin-left: auto; }
.nav__toggle span { width: 22px; height: 2px; background: var(--ink); transition: 0.25s var(--ease); }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-7px) rotate(-45deg); }

/* =============================== Section rhythm =============================== */
.section { padding-block: var(--sp-section); position: relative; }
.section + .section { border-top: 1px solid var(--line-soft); }
.section--tint { background: var(--slate-950); }
.section-head { max-width: 64ch; margin-bottom: clamp(2.2rem, 4vw, 3.4rem); }
.section-head > h2 { position: relative; padding-left: 1.1rem; }
.section-head > h2::before { content: ""; position: absolute; left: 0; top: 0.12em; bottom: 0.12em; width: 3px; background: var(--ember); border-radius: 2px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center > h2 { padding-left: 0; }
.section-head--center > h2::before { display: none; }
.section-head__sub { color: var(--ink-body); margin-top: 1.3rem; font-size: 1.06rem; max-width: 62ch; }
.section-head--center .section-head__sub { margin-inline: auto; }

/* =============================== Thermal profile band =============================== */
.thermal__fig { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--slate-950); padding: clamp(1rem, 3vw, 2rem); }
.thermal__fig svg { display: block; width: 100%; height: auto; overflow: visible; }
.thermal__grid { stroke: var(--line-soft); stroke-width: 1; }
.thermal__div { stroke: var(--line-soft); stroke-width: 1; stroke-dasharray: 3 5; }
.thermal__target { stroke: var(--ember); stroke-width: 1; stroke-dasharray: 5 5; stroke-opacity: 0.55; }
.thermal__hot { fill: var(--ember); fill-opacity: 0.10; }
.thermal__area { fill: var(--ember); fill-opacity: 0.10; }
.thermal__curve { fill: none; stroke: var(--ember); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.thermal__dot { fill: var(--ember-hot); }
.thermal__halo { fill: none; stroke: var(--ember-hot); stroke-opacity: 0.5; }
.thermal__ax { fill: var(--ink-faint); font-family: var(--f-mono); font-size: 15px; }
.thermal__zone { fill: var(--ink-muted); font-family: var(--f-mono); font-size: 16px; letter-spacing: 0.04em; text-transform: uppercase; }
.thermal__zone.is-hot { fill: var(--ember-hot); }
.thermal__peak { fill: var(--ink); font-family: var(--f-display); font-weight: 700; font-size: 20px; }

/* =============================== Hero =============================== */
.hero { padding-top: clamp(2.5rem, 5vw, 4.5rem); }
.hero__inner {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 4vw, 4rem); align-items: center;
  padding-block: clamp(1rem, 3vw, 2.2rem) clamp(2.5rem, 5vw, 4rem);
}
.hero__inner > * { min-width: 0; }
.hero__copy { max-width: 42ch; }
.hero__lede { margin-top: 1.4rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 2rem; }
.hero__stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 2.6rem; padding-top: 1.7rem; border-top: 1px solid var(--line-soft); }
.hero__stats > div { padding-inline: clamp(0.85rem, 2vw, 1.5rem); border-left: 1px solid var(--line-soft); min-width: 0; }
.hero__stats > div:first-child { padding-left: 0; border-left: 0; }
.hero__stats dt { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); }
.hero__stats dd { font-family: var(--f-display); font-weight: 800; font-size: clamp(1.5rem, 1.2rem + 1vw, 1.85rem); color: var(--ink); letter-spacing: -0.02em; margin-top: 0.3rem; font-variant-numeric: tabular-nums; text-wrap: nowrap; }
.hero__stats dd span { color: var(--ember-hot); font-size: 1.05rem; margin-left: 2px; }

/* interior page hero (no console) */
.pagehero { padding-block: clamp(2.6rem, 5vw, 4.4rem) clamp(2rem, 4vw, 3rem); border-bottom: 1px solid var(--line-soft); }
.pagehero__inner { max-width: 72ch; }
.pagehero h1 { font-size: clamp(2.3rem, 1.6rem + 3vw, 3.8rem); }
.pagehero .lede { margin-top: 1.3rem; }
.pagehero__meta { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.6rem; }
.tag {
  font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-muted); border: 1px solid var(--line); border-radius: 100px; padding: 0.3rem 0.7rem;
}

/* =============================== Console (kiln instrument) =============================== */
.console { background: var(--slate-900); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.console__bar { display: flex; align-items: center; justify-content: space-between; padding: 0.7rem 1rem; border-bottom: 1px solid var(--line); background: var(--slate-950); }
.console__title { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.14em; color: var(--ink-muted); }
.console__state { display: inline-flex; align-items: center; gap: 0.45rem; font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.12em; color: var(--ember-hot); border: 1px solid var(--ember-deep); border-radius: 100px; padding: 0.2rem 0.6rem; }
.console__viz { width: 100%; height: auto; background: var(--void); }
.console__readouts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.ro { padding: 0.75rem 0.85rem; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; }
.ro:nth-child(3n) { border-right: 0; }
.ro:nth-child(n+4) { border-bottom: 0; }
.ro__k { font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.1em; color: var(--ink-faint); }
.ro__v { font-family: var(--f-mono); font-weight: 600; font-size: 1.14rem; color: var(--ink); font-variant-numeric: tabular-nums; }
.ro__v i { font-style: normal; font-size: 0.68rem; color: var(--ink-muted); margin-left: 2px; }
.ro__bar { height: 3px; border-radius: 2px; background: var(--slate-800); overflow: hidden; }
.ro__bar b { display: block; height: 100%; width: 100%; background: var(--ember); border-radius: 2px; transform: scaleX(var(--w)); transform-origin: left; transition: transform 0.6s var(--ease); }
.ro__bar--good b { background: var(--good); }

/* =============================== Ticker =============================== */
.ticker { border-block: 1px solid var(--line); background: var(--slate-950); overflow: hidden; padding: 0.6rem 0; }
.ticker__track { display: flex; gap: 2.5rem; width: max-content; animation: marquee 46s linear infinite; }
.ticker__track span { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ink-faint); white-space: nowrap; }
.ticker__track span::before { content: "◦ "; color: var(--ember-deep); }
@keyframes marquee { to { transform: translateX(-50%); } }
.ticker:hover .ticker__track { animation-play-state: paused; }

/* =============================== Stat band =============================== */
.statband { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--slate-950); padding: clamp(1.5rem, 3vw, 2.2rem) 1.5rem; position: relative; }
.stat::before { content: ""; position: absolute; left: 1.5rem; top: 0; width: 22px; height: 2px; background: var(--ember); }
.stat__v.is-good ~ .stat__k { color: var(--ink-muted); }
.stat__v { font-family: var(--f-display); font-weight: 800; font-size: clamp(2.2rem, 1.6rem + 2.4vw, 3.1rem); color: var(--ink); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stat__v span { color: var(--ember-hot); font-size: 0.55em; margin-left: 3px; }
.stat__v.is-good { color: var(--good); }
.stat__k { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); margin-top: 0.5rem; }

/* =============================== Failmodes / plain card grid =============================== */
.grid-lines { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.cell { background: var(--slate-950); padding: 1.7rem 1.55rem; transition: background 0.3s var(--ease); position: relative; }
.cell::after { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.cell:hover { background: var(--slate-900); }
.cell:hover::after { transform: scaleX(1); }
.cell__tag { font-family: var(--f-mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ember-hot); }
.cell h3 { margin: 0.9rem 0 0.55rem; }
.cell p { color: var(--ink-muted); font-size: 0.95rem; }
.cell__glyph { width: 30px; height: 30px; color: var(--ember-hot); margin-bottom: 1.2rem; }
.cell__glyph svg { width: 100%; height: 100%; }

/* =============================== Agent matrix =============================== */
.matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.agent { background: var(--slate-950); padding: 1.6rem 1.45rem; min-height: 200px; display: flex; flex-direction: column; position: relative; transition: background 0.3s var(--ease); }
.agent::before { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); z-index: 1; }
.agent:hover { background: var(--slate-900); }
.agent:hover::before { transform: scaleX(1); }
.agent--twin::before { background: var(--good); }
.agent__id { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.4rem; }
.agent__code { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.14em; color: var(--ink-faint); }
.agent__glyph { width: 32px; height: 32px; color: var(--ember-hot); }
.agent__glyph svg { width: 100%; height: 100%; }
.agent h3 { margin-bottom: 0.5rem; }
.agent p { color: var(--ink-muted); font-size: 0.9rem; line-height: 1.5; flex: 1; }
.agent__link { margin-top: 0.9rem; font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ember-hot); }
.agent--lead { background: var(--ember-tint-2); }
.agent--lead:hover { background: var(--ember-tint); }
.agent--lead::after { content: ""; position: absolute; inset: 0; pointer-events: none; border: 1px solid var(--ember-deep); }
.agent--twin { background: var(--good-tint); }
.agent--twin .agent__glyph { color: var(--good); }
.agent--twin .agent__link { color: var(--good); }

/* =============================== Feature split =============================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.split > * { min-width: 0; }
.split--reverse .split__media { order: -1; }
.split__body p { color: var(--ink-body); margin-top: 1.1rem; }
.split__list { display: flex; flex-direction: column; gap: 0.75rem; margin: 1.6rem 0; }
.split__list li { color: var(--ink-muted); padding-left: 1.5rem; position: relative; font-size: 0.98rem; }
.split__list li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 8px; height: 8px; border-radius: 2px; background: var(--ember); transform: rotate(45deg); }
.split__list strong { color: var(--ink); font-weight: 600; }
.panel { background: var(--slate-900); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem; }
.panel--pad0 { padding: 0; overflow: hidden; }

/* diagram panel: labelled readout rows */
.diagram { display: flex; flex-direction: column; gap: 0.6rem; }
.diagram__row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.85rem 1rem; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--slate-950); }
.diagram__row span:first-child { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ink-muted); text-transform: uppercase; }
.diagram__row .val { font-family: var(--f-mono); font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.diagram__row .val.is-good { color: var(--good); }
.diagram__row .val.is-warn { color: var(--ember-hot); }

/* =============================== Steps (real sequences) =============================== */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.1rem; counter-reset: step; }
.step { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem 1.4rem; background: var(--slate-950); position: relative; overflow: hidden; transition: border-color 0.25s var(--ease), transform 0.25s var(--ease); }
.step::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--ember); transform: scaleY(0); transform-origin: top; transition: transform 0.35s var(--ease); }
.step:hover { border-color: var(--line); transform: translateY(-3px); }
.step:hover::before { transform: scaleY(1); }
.step__n { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.14em; color: var(--ember-hot); }
.step h3 { margin: 0.7rem 0 0.5rem; }
.step p { color: var(--ink-muted); font-size: 0.92rem; }

/* =============================== Loop viz (home) =============================== */
.loopviz { list-style: none; position: relative; aspect-ratio: 1; max-width: 420px; margin-inline: auto; width: 100%; }
.loopviz__node { position: absolute; width: 42%; text-align: center; background: var(--slate-900); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.9rem 0.6rem; display: flex; flex-direction: column; gap: 0.15rem; }
.loopviz__node span:not(.loopviz__k) { font-family: var(--f-display); font-weight: 700; color: var(--ink); }
.loopviz__k { font-family: var(--f-mono); font-size: 0.64rem; color: var(--ember-hot); letter-spacing: 0.14em; }
.loopviz__node small { font-size: 0.66rem; color: var(--ink-faint); font-family: var(--f-mono); }
.loopviz__node[data-node="perceive"] { top: 0; left: 50%; transform: translateX(-50%); }
.loopviz__node[data-node="simulate"] { bottom: 6%; left: 0; }
.loopviz__node[data-node="act"] { bottom: 6%; right: 0; }
.loopviz__node.is-active { border-color: var(--ember); }
.loopviz__ring { position: absolute; inset: 8%; width: 84%; height: 84%; z-index: -1; }
.loopviz__ring circle { fill: none; stroke: var(--line); stroke-width: 1.5; }
.loopviz__spark { stroke: var(--ember); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 18 82; stroke-dashoffset: 0; animation: orbit 6s linear infinite; }
@keyframes orbit { to { stroke-dashoffset: -100; } }

/* =============================== Spec table =============================== */
.spec { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec__row { display: grid; grid-template-columns: minmax(160px, 0.9fr) 1.6fr; gap: 1rem; padding: 1rem 1.3rem; border-bottom: 1px solid var(--line-soft); align-items: baseline; }
.spec__row:last-child { border-bottom: 0; }
.spec__row:nth-child(odd) { background: var(--slate-950); }
.spec__k { font-family: var(--f-mono); font-size: 0.76rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); }
.spec__v { color: var(--ink-body); }
.spec__v strong { color: var(--ink); }

/* =============================== Comparison =============================== */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.compare__col { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem; background: var(--slate-950); }
.compare__col--ours { border-color: var(--ember-deep); background: var(--ember-tint-2); }
.compare__col h3 { margin-bottom: 1.1rem; display: flex; align-items: center; gap: 0.5rem; }
.compare__col ul { display: flex; flex-direction: column; gap: 0.7rem; }
.compare__col li { color: var(--ink-body); font-size: 0.95rem; padding-left: 1.5rem; position: relative; }
.compare__col li::before { content: "—"; position: absolute; left: 0; color: var(--ink-faint); }
.compare__col--ours li::before { content: "▸"; color: var(--ember-hot); }

/* =============================== Quote =============================== */
.quote { max-width: 40ch; }
.quote blockquote { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2.1rem); line-height: 1.25; letter-spacing: -0.02em; color: var(--ink); }
.quote__cite { margin-top: 1.4rem; font-family: var(--f-mono); font-size: 0.8rem; color: var(--ink-muted); letter-spacing: 0.04em; }
.quote__cite b { color: var(--ember-hot); font-weight: 500; }

/* =============================== FAQ =============================== */
.faq { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; max-width: var(--shell-narrow); }
.faq__item { border-bottom: 1px solid var(--line-soft); }
.faq__item:last-child { border-bottom: 0; }
.faq__q { width: 100%; text-align: left; background: var(--slate-950); border: 0; padding: 1.2rem 1.4rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-family: var(--f-display); font-weight: 600; font-size: 1.02rem; color: var(--ink); transition: background 0.2s; }
.faq__q:hover { background: var(--slate-900); }
.faq__ico { flex: none; width: 18px; height: 18px; position: relative; }
.faq__ico::before, .faq__ico::after { content: ""; position: absolute; background: var(--ember-hot); transition: transform 0.25s var(--ease); }
.faq__ico::before { left: 0; top: 8px; width: 18px; height: 2px; }
.faq__ico::after { left: 8px; top: 0; width: 2px; height: 18px; }
.faq__q[aria-expanded="true"] .faq__ico::after { transform: scaleY(0); }
.faq__a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.3s var(--ease); }
.faq__q[aria-expanded="true"] + .faq__a { grid-template-rows: 1fr; }
.faq__a > p { overflow: hidden; min-height: 0; padding: 0 1.4rem 1.3rem; color: var(--ink-muted); font-size: 0.97rem; }

/* =============================== Tiers (pricing) =============================== */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; align-items: start; }
.tier { border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.6rem, 3vw, 2.2rem); background: var(--slate-950); display: flex; flex-direction: column; gap: 0.9rem; transition: transform 0.3s var(--ease), border-color 0.3s var(--ease); }
.tier:hover { transform: translateY(-4px); border-color: var(--ember); }
.tier--feature { background: var(--ember-tint-2); border-color: var(--ember-deep); position: relative; }
.tier__flag { position: absolute; top: -0.7rem; left: 50%; transform: translateX(-50%); font-family: var(--f-mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; background: var(--ember); color: var(--ember-ink); padding: 0.3rem 0.75rem; border-radius: 100px; }
.tier__name { font-size: 1.05rem; }
.tier__price { font-family: var(--f-display); font-weight: 700; font-size: 2rem; color: var(--ink); letter-spacing: -0.02em; line-height: 1.1; }
.tier__price span { display: block; font-family: var(--f-mono); font-size: 0.72rem; font-weight: 400; color: var(--ink-faint); letter-spacing: 0.06em; margin-top: 0.3rem; }
.tier__desc { color: var(--ink-muted); font-size: 0.93rem; }
.tier__list { display: flex; flex-direction: column; gap: 0.55rem; margin: 0.3rem 0 0.4rem; flex: 1; }
.tier__list li { color: var(--ink-body); font-size: 0.9rem; padding-left: 1.4rem; position: relative; }
.tier__list li::before { content: "▸"; position: absolute; left: 0; color: var(--ember-hot); }

/* =============================== Segments / logo-ish row =============================== */
.segs { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.seg { background: var(--slate-950); padding: 1.5rem 1.4rem; display: flex; flex-direction: column; gap: 0.4rem; position: relative; transition: background 0.3s var(--ease); }
.seg::after { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%; background: var(--ember); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.seg:hover { background: var(--slate-900); }
.seg:hover::after { transform: scaleX(1); }
.seg__k { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ember-hot); }
.seg strong { font-family: var(--f-display); color: var(--ink); font-size: 1.08rem; }
.seg p { color: var(--ink-muted); font-size: 0.9rem; }

/* =============================== Checklist two-col =============================== */
.checks { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 0.7rem 2.5rem; }
.checks li { color: var(--ink-body); padding-left: 1.7rem; position: relative; padding-block: 0.35rem; border-bottom: 1px solid var(--line-soft); }
.checks li::before { content: "✓"; position: absolute; left: 0; top: 0.35rem; color: var(--good); font-weight: 700; }

/* =============================== Metrics gauges (deltas) =============================== */
.gauges { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: clamp(1rem, 3vw, 1.5rem); }
.gauge { border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.2rem) 1.6rem; background: var(--slate-950); position: relative; overflow: hidden; }
.gauge__delta { font-family: var(--f-display); font-weight: 800; letter-spacing: -0.03em; font-size: clamp(2.4rem, 1.8rem + 2.6vw, 3.6rem); color: var(--ink); font-variant-numeric: tabular-nums; display: block; }
.gauge__delta--down { color: var(--good); }
.gauge__delta--up { color: var(--ember-hot); }
.gauge figcaption { font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted); margin-top: 0.5rem; }
.gauge::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--ember); transform: scaleX(0.001); transform-origin: left; transition: transform 1s var(--ease); }
.gauge.is-in::after { transform: scaleX(1); }
.gauge--good::after { background: var(--good); }

/* =============================== Timeline / roadmap =============================== */
.timeline { border-left: 1px solid var(--line); margin-left: 6px; display: flex; flex-direction: column; gap: 1.8rem; padding-left: 1.6rem; }
.tl { position: relative; }
.tl::before { content: ""; position: absolute; left: calc(-1.6rem - 6px); top: 4px; width: 11px; height: 11px; border-radius: 50%; background: var(--slate-950); border: 2px solid var(--ember); }
.tl__k { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.12em; color: var(--ember-hot); text-transform: uppercase; }
.tl h3 { margin: 0.35rem 0 0.4rem; }
.tl p { color: var(--ink-muted); font-size: 0.95rem; }

/* =============================== Related links =============================== */
.related { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.rel { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.5rem; background: var(--slate-950); transition: border-color 0.25s, transform 0.25s var(--ease); display: block; }
.rel:hover { border-color: var(--ember); transform: translateY(-3px); }
.rel__k { font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); }
.rel strong { display: block; font-family: var(--f-display); color: var(--ink); font-size: 1.1rem; margin: 0.5rem 0; }
.rel p { color: var(--ink-muted); font-size: 0.9rem; }
.rel__arrow { color: var(--ember-hot); margin-top: 0.8rem; font-family: var(--f-mono); font-size: 0.8rem; display: inline-block; }

/* =============================== Prose (about/legal) =============================== */
.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.2rem; color: var(--ink-body); }
.prose h3 { margin: 2rem 0 0.8rem; }

/* =============================== CTA band =============================== */
.cta { background: var(--slate-950); }
.cta__inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; border: 1px solid var(--line); border-radius: 16px; padding: clamp(2rem, 5vw, 3.4rem); background: var(--slate-900); }
.cta__inner > * { min-width: 0; }
.cta__copy p { color: var(--ink-body); margin-top: 1rem; }
.cta__form { display: flex; flex-direction: column; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field span { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted); }
.field input {
  background: var(--slate-950); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 0.85rem 1rem; color: var(--ink); font: inherit; transition: border-color 0.2s;
}
.field input::placeholder { color: var(--ink-faint); }
.field input:focus { outline: none; border-color: var(--ember); }
.cta__note { font-family: var(--f-mono); font-size: 0.78rem; color: var(--good); min-height: 1.2em; }

/* =============================== Footer =============================== */
.foot { border-top: 1px solid var(--line); padding-top: clamp(3rem, 5vw, 4.5rem); background: var(--slate-950); }
.foot__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 2.5rem; }
.foot__brand { max-width: 34ch; }
.foot__brand p { color: var(--ink-muted); font-size: 0.92rem; margin-top: 1rem; }
.foot__tag { color: var(--ember-hot) !important; font-family: var(--f-mono); font-size: 0.8rem !important; letter-spacing: 0.06em; }
.foot__col h4 { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 1rem; font-weight: 500; }
.foot__col a { display: block; color: var(--ink-muted); font-size: 0.9rem; padding: 0.28rem 0; transition: color 0.18s; }
.foot__col a:hover { color: var(--ember-hot); }
.foot__base { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; border-top: 1px solid var(--line-soft); padding-block: 1.5rem; font-family: var(--f-mono); font-size: 0.76rem; color: var(--ink-faint); }
.foot__dom { color: var(--ember-hot); }

/* =============================== Reveal motion =============================== */
/* Initial hidden state is scoped to .js (set by app.js) so content is always
   visible if JavaScript fails, is disabled, or never runs (prerender/headless). */
.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); will-change: opacity, transform; }
[data-reveal].is-in { opacity: 1; transform: none; }
.js [data-reveal="left"] { transform: translateX(-28px); }
.js [data-reveal="right"] { transform: translateX(28px); }
.js [data-reveal="scale"] { transform: scale(0.94); }
[data-reveal].is-in { transform: none; }
.js [data-stagger] > * { opacity: 0; transform: translateY(18px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
[data-stagger].is-in > * { opacity: 1; transform: none; }
[data-stagger].is-in > *:nth-child(1) { transition-delay: 0.04s; }
[data-stagger].is-in > *:nth-child(2) { transition-delay: 0.1s; }
[data-stagger].is-in > *:nth-child(3) { transition-delay: 0.16s; }
[data-stagger].is-in > *:nth-child(4) { transition-delay: 0.22s; }
[data-stagger].is-in > *:nth-child(5) { transition-delay: 0.28s; }
[data-stagger].is-in > *:nth-child(6) { transition-delay: 0.34s; }

/* =============================== Product showcase =============================== */
.prodgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.pcard {
  --accent: var(--ember);
  position: relative; display: flex; flex-direction: column; gap: 0.85rem;
  background: var(--slate-950); padding: 1.7rem 1.55rem 1.5rem; overflow: hidden;
  transition: background 0.35s var(--ease), transform 0.35s var(--ease);
}
.pcard::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease);
}
.pcard:hover { background: var(--slate-900); }
.pcard:hover::before { transform: scaleX(1); }
.pcard__head { display: flex; align-items: center; gap: 0.85rem; }
.pcard__logo { width: 42px; height: 42px; object-fit: contain; transition: transform 0.4s var(--ease); }
.pcard:hover .pcard__logo { transform: rotate(-6deg) scale(1.08); }
.pcard__name { font-family: var(--f-display); font-weight: 700; font-size: 1.16rem; letter-spacing: -0.02em; color: var(--ink); }
.pcard__role { font-family: var(--f-mono); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-top: 0.15rem; }
.pcard__tag { color: var(--ink-muted); font-size: 0.94rem; line-height: 1.5; flex: 1; }
.pcard__go { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); transition: color 0.2s, gap 0.2s; display: inline-flex; gap: 0.4rem; }
.pcard:hover .pcard__go { color: var(--accent); gap: 0.7rem; }
.pcard__stretch { position: absolute; inset: 0; }

/* =============================== Product detail page =============================== */
.phero { position: relative; padding: clamp(2.6rem, 6vw, 4.6rem) 0 clamp(2rem, 4vw, 3rem); border-bottom: 1px solid var(--line-soft); }
.phero__inner { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: clamp(1.5rem, 4vw, 3rem); align-items: center; }
.phero__badge { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--pc-accent, var(--ember-hot)); border: 1px solid var(--line); border-radius: 100px; padding: 0.3rem 0.7rem; }
.phero h1 { font-size: clamp(2.4rem, 1.6rem + 3.4vw, 4rem); line-height: 1.02; letter-spacing: -0.03em; margin: 1rem 0 0.9rem; }
.phero__tag { font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem); color: var(--ink-body); max-width: 46ch; }
.phero__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.6rem; }
.phero__logo { display: flex; align-items: center; justify-content: center; aspect-ratio: 1; border: 1px solid var(--line-soft); background: var(--slate-900); }
.phero__logo img { width: 58%; height: 58%; object-fit: contain; animation: floaty 6s var(--ease) infinite; }
@keyframes floaty { 0%, 100% { transform: translateY(-6px); } 50% { transform: translateY(6px); } }
.pc-accent { color: var(--pc-accent, var(--ember-hot)); }

.pfeat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.pfeat article { background: var(--slate-950); padding: 1.5rem 1.4rem; transition: background 0.3s var(--ease); position: relative; }
.pfeat article::after { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 100%; background: var(--pc-accent, var(--ember)); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.pfeat article:hover { background: var(--slate-900); }
.pfeat article:hover::after { transform: scaleX(1); }
.pfeat h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.pfeat p { color: var(--ink-muted); font-size: 0.92rem; line-height: 1.55; }
.pfeat .pfeat__n { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--pc-accent, var(--ember-hot)); display: block; margin-bottom: 0.7rem; }

.pchips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.pchip { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--ink-muted); border: 1px solid var(--line); border-radius: 100px; padding: 0.4rem 0.85rem; transition: border-color 0.2s, color 0.2s; }
.pchip:hover { border-color: var(--pc-accent, var(--ember)); color: var(--ink); }

.pnav { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.pnav a { font-family: var(--f-mono); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--ink-muted); border: 1px solid var(--line-soft); padding: 0.55rem 0.9rem; display: inline-flex; align-items: center; gap: 0.5rem; transition: border-color 0.2s, color 0.2s, transform 0.2s var(--ease); }
.pnav a:hover { color: var(--ink); border-color: var(--line); transform: translateY(-2px); }
.pnav a b { width: 8px; height: 8px; border-radius: 50%; background: var(--dot, var(--ember)); }


/* =============================== Responsive =============================== */
@media (max-width: 1000px) {
  .matrix { grid-template-columns: repeat(2, 1fr); }
  .prodgrid, .pfeat { grid-template-columns: repeat(2, 1fr); }
  .phero__inner { grid-template-columns: 1fr; }
  .phero__logo { max-width: 240px; order: -1; }
  .tiers { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .tier--feature { order: -1; }
  .compare { grid-template-columns: 1fr; }
}
@media (max-width: 1040px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav.is-open .nav__links { display: flex; position: absolute; top: 66px; left: 0; right: 0; transform: none; flex-direction: column; gap: 0; background: var(--slate-950); border-bottom: 1px solid var(--line); padding: 0.5rem var(--gut) 1.2rem; margin: 0; align-items: stretch; }
  .nav.is-open .nav__links a { padding: 0.85rem 0; border-bottom: 1px solid var(--line-soft); }
  .nav.is-open .nav__links a::after { display: none; }
}
@media (max-width: 880px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__copy { max-width: min(52ch, 100%); }
  .split, .cta__inner { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .foot__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .matrix { grid-template-columns: 1fr; }
  .prodgrid, .pfeat { grid-template-columns: 1fr; }
  .console__readouts { grid-template-columns: repeat(2, 1fr); }
  .ro:nth-child(3n) { border-right: 1px solid var(--line-soft); }
  .ro:nth-child(2n) { border-right: 0; }
  .ro:nth-child(n+4) { border-bottom: 1px solid var(--line-soft); }
  .ro:nth-child(n+5) { border-bottom: 0; }
  .foot__inner { grid-template-columns: 1fr; }
  .spec__row { grid-template-columns: 1fr; gap: 0.3rem; }
  .hero__stats > div { padding-inline: 0.7rem; }
  .hero__stats dt { font-size: 0.58rem; letter-spacing: 0.05em; }
  .hero__stats dd { font-size: 1.32rem; }
}

/* =============================== Reduced motion =============================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  [data-reveal], .js [data-reveal] { opacity: 1; transform: none; }
  [data-stagger] > *, .js [data-stagger] > * { opacity: 1; transform: none; }
  .phero__logo img { animation: none; }
  .ticker__track { animation: none; }
  .loopviz__spark { animation: none; stroke-dashoffset: -25; }
  .pulse-dot { animation: none; }
}