/* ==========================================================================
   NaOHX · site styles
   Order: tokens → base → typography → components → header → sections →
   responsive → motion preferences
   ========================================================================== */

:root {
  --bg: #07090d;
  --bg-2: #0b0f15;
  --surface: #0f141c;
  --surface-2: #151c27;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eef2f6;
  --text-2: #a3acb8;
  --text-3: #7d879a;
  --accent: #e8b85c;
  --accent-2: #f5d28a;
  --accent-ink: #1a1305;
  --accent-soft: rgba(232, 184, 92, 0.14);
  --signal: #5fd3c4;
  --signal-2: #9ae9df;
  --signal-soft: rgba(95, 211, 196, 0.14);
  --rose: #f47c96;
  --rose-soft: rgba(244, 124, 150, 0.14);

  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-body: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius: 20px;
  --radius-sm: 12px;
  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --header-h: 72px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --shadow-lg: 0 40px 80px -40px rgba(0, 0, 0, 0.85);
}

/* ------------------------------------------------------------------ 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 1rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Fine film grain keeps the large dark surfaces from reading as flat. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.045;
  background-image: 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='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

img,
svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
::selection { background: var(--accent); color: var(--accent-ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 999px;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.container {
  width: min(var(--container), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(4.5rem, 10vw, 8.5rem);
}

/* ------------------------------------------------------------ Typography */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-2);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
}

h1,
h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
h1 {
  font-size: clamp(2.75rem, 5.8vw, 5.1rem);
  line-height: 1.02;
}
h2 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  line-height: 1.06;
}
h1 em,
h2 em {
  font-style: italic;
  color: var(--accent-2);
}
h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.lead {
  max-width: 58ch;
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  line-height: 1.6;
  color: var(--text-2);
}

.section-head {
  max-width: 760px;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}
.section-head .lead { margin-top: 1.25rem; }
.section-head.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: end;
  max-width: none;
}
.section-head.split .lead { margin: 0 0 0.5rem; }

/* ------------------------------------------------------------ Components */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.5rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
  transition:
    transform 0.25s var(--ease),
    background 0.25s,
    border-color 0.25s,
    box-shadow 0.25s;
}
.btn svg { transition: transform 0.25s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn-sm { padding: 0.7rem 1.1rem; font-size: 0.88rem; }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow:
    0 0 0 1px rgba(232, 184, 92, 0.35),
    0 12px 32px -12px rgba(232, 184, 92, 0.55);
}
.btn-primary:hover {
  transform: translateY(-1px);
  background: var(--accent-2);
  box-shadow:
    0 0 0 1px rgba(232, 184, 92, 0.6),
    0 16px 40px -12px rgba(232, 184, 92, 0.7);
}
.btn-primary:disabled { opacity: 0.6; cursor: progress; transform: none; }

.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.05);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: border-color 0.2s, color 0.2s;
}
.link-arrow:hover { border-color: var(--accent); color: var(--accent-2); }

.ticks { display: grid; gap: 0.7rem; margin-top: 1.5rem; }
.ticks li {
  position: relative;
  padding-left: 1.85rem;
  color: var(--text-2);
  font-size: 0.98rem;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235fd3c4' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M6 12.5l4 4L18 8'/></svg>") center/10px no-repeat,
    var(--signal-soft);
}

.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chips li {
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-2);
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.02em;
}

.pill {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}
.pill.ok { background: var(--signal-soft); color: var(--signal-2); }
.pill.warn { background: var(--accent-soft); color: var(--accent-2); }
.pill.bad { background: var(--rose-soft); color: var(--rose); }

.dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 0.4rem;
  border-radius: 50%;
}
.dot.ok { background: var(--signal); }
.dot.warn { background: var(--accent); }
.dot.bad { background: var(--rose); }

/* Cards carry a pointer-following highlight (set by main.js via --mx/--my). */
.card {
  position: relative;
  overflow: hidden;
  padding: 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0) 40%),
    var(--surface);
  transition: border-color 0.3s, transform 0.3s var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(
    460px circle at var(--mx, 50%) var(--my, 50%),
    rgba(232, 184, 92, 0.11),
    transparent 60%
  );
  transition: opacity 0.35s;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.card:hover::before { opacity: 1; }
.card > * { position: relative; }

/* ---------------------------------------------------------------- Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
.site-header.is-scrolled,
.nav-open .site-header {
  background: rgba(7, 9, 13, 0.74);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.65rem; }
.brand img { width: 34px; height: 34px; }
.brand-name {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  transform: translateY(-1px);
}

.nav { display: flex; gap: 0.15rem; }
.nav a {
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover,
.nav a.is-active { color: var(--text); background: rgba(255, 255, 255, 0.05); }

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

.nav-toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}
.nav-toggle span {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s var(--ease), top 0.3s var(--ease);
}
.nav-toggle span:first-child { top: 16px; }
.nav-toggle span:last-child { top: 24px; }
.nav-toggle[aria-expanded="true"] span:first-child { top: 20px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { top: 20px; transform: rotate(-45deg); }

/* ------------------------------------------------------------------ Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + clamp(3.5rem, 8vw, 6.5rem));
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg .grid-lines {
  position: absolute;
  inset: 0;
  opacity: 0.55;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 70% 65% at 50% 0%, #000 15%, transparent 100%);
  mask-image: radial-gradient(ellipse 70% 65% at 50% 0%, #000 15%, transparent 100%);
}
.glow { position: absolute; border-radius: 50%; }
.glow-a {
  left: -14%;
  top: -22%;
  width: 760px;
  height: 560px;
  background: radial-gradient(closest-side, rgba(232, 184, 92, 0.2), transparent);
}
.glow-b {
  right: -16%;
  top: 4%;
  width: 680px;
  height: 560px;
  background: radial-gradient(closest-side, rgba(95, 211, 196, 0.14), transparent);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero-copy .lead { margin-top: 1.5rem; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.25rem;
}
.hero-note {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  font-size: 0.88rem;
}
.hero-note b { color: var(--text-2); font-weight: 600; }

/* Operations graph */
.hero-visual { position: relative; }
.ops-canvas {
  position: relative;
  aspect-ratio: 640 / 520;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(60% 50% at 50% 45%, rgba(95, 211, 196, 0.07), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent 50%),
    var(--surface);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.ops-canvas::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0.7;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}
.ops-graph { position: relative; width: 100%; height: 100%; }
.ops-graph .edges path {
  fill: none;
  stroke: rgba(255, 255, 255, 0.14);
  stroke-width: 1.25;
}
.ops-graph .node-bg {
  fill: #0e131b;
  stroke: var(--line-strong);
  stroke-width: 1.25;
}
.ops-graph .node-icon {
  fill: none;
  stroke: var(--text-2);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ops-graph .node-label {
  font: 500 11px var(--font-mono);
  letter-spacing: 0.04em;
  fill: var(--text-3);
  text-anchor: middle;
}
.ops-graph .hub .node-bg { fill: #12171f; stroke: var(--accent); }
.ops-graph .hub .node-icon { stroke: var(--accent-2); stroke-width: 1.8; }
.ops-graph .hub .node-label { fill: var(--text-2); }
.ops-graph .pulse {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1;
  transform-box: fill-box;
  transform-origin: center;
  animation: pulse 3.4s ease-out infinite;
}
.ops-graph .p .halo { opacity: 0.22; }
.ops-graph .p-gold circle { fill: var(--accent); }
.ops-graph .p-teal circle { fill: var(--signal); }

/* Floating insight cards over the graph */
.fc {
  position: absolute;
  z-index: 2;
  min-width: 200px;
  max-width: 240px;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: rgba(13, 18, 26, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.85);
  animation: float 7s ease-in-out infinite;
}
.fc-1 { left: -12%; top: -13%; max-width: 220px; }
.fc-2 { right: -9%; top: 38%; animation-delay: -2.5s; }
.fc-3 { left: 3%; bottom: -9%; animation-delay: -4.5s; }

/* Three business examples share the graph; only the active one is visible. */
.scene,
.fc {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s var(--ease), visibility 0s linear 0.6s;
}
.scene.is-active,
.fc.is-active {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}
.scene-switch {
  position: absolute;
  top: 5%;
  right: 5%;
  z-index: 3;
  display: flex;
  gap: 0.3rem;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(13, 18, 26, 0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.scene-switch button {
  position: relative;
  overflow: hidden;
  padding: 0.4rem 0.6rem;
  border-radius: 999px;
  font: 500 0.6rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}
.scene-switch button:hover { color: var(--text); }
.scene-switch button.is-active { color: var(--accent-2); background: var(--accent-soft); }
.scene-switch button.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  animation: scene-progress 7s linear;
}
.hero-visual:hover .scene-switch button.is-active::after { animation-play-state: paused; }

.fc-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-2);
  font-size: 0.78rem;
  font-weight: 600;
}
.fc-time {
  margin-left: auto;
  font: 500 0.65rem var(--font-mono);
  color: var(--text-3);
}
.fc-icon {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 6px;
}
.fc-icon.big { width: 40px; height: 40px; border-radius: 12px; margin-bottom: 1rem; }
.fc-icon.gold { background: var(--accent-soft); color: var(--accent-2); }
.fc-icon.teal { background: var(--signal-soft); color: var(--signal-2); }
.fc-title {
  margin-top: 0.55rem;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.fc-meta { margin-top: 0.2rem; color: var(--text-3); font-size: 0.78rem; }
.fc-meta.up { color: var(--signal); }
.fc .pill { margin-top: 0.65rem; }
.fc-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.4rem;
}
.fc-stat b { font-size: 1.65rem; font-weight: 700; letter-spacing: -0.03em; }
.spark {
  width: 84px;
  height: 30px;
  fill: none;
  stroke: var(--signal);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------- Marquee */
.marquee {
  overflow: hidden;
  padding: 1.15rem 0;
  border-block: 1px solid var(--line);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 48s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-list {
  display: flex;
  flex: none;
  gap: 2.75rem;
  padding-right: 2.75rem;
}
.marquee-list li {
  display: flex;
  align-items: center;
  gap: 2.75rem;
  color: var(--text-3);
  font: 500 0.78rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}
.marquee-list li::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

/* ---------------------------------------------------- End-to-end partner */
.partner {
  background: var(--bg-2);
  border-block: 1px solid var(--line);
}
.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.pillar {
  position: relative;
  padding: 2rem 1.75rem 1.75rem;
  border-left: 1px solid var(--line);
}
.pillar:first-child { border-left: 0; }
/* A small chevron on each divider reads as "then". */
.pillar + .pillar::before {
  content: "";
  position: absolute;
  top: 2.7rem;
  left: 0;
  width: 11px;
  height: 11px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  background: var(--surface);
  transform: translateX(-50%) rotate(45deg);
}
.pillar-num {
  display: block;
  margin-bottom: 1.25rem;
  font: 400 2.4rem/1 var(--font-display);
  font-style: italic;
  color: var(--accent);
}
.pillar h3 { font-size: 1.25rem; }
.pillar p { margin-top: 0.7rem; color: var(--text-2); font-size: 0.97rem; }
.pillar .chips { margin-top: 1.25rem; }

/* -------------------------------------------------------------- Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}
.service-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  min-height: 280px;
}
.service-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 1rem 2.5rem;
  align-items: end;
  min-height: 0;
  background:
    radial-gradient(70% 120% at 0% 0%, rgba(232, 184, 92, 0.13), transparent 60%),
    var(--surface);
}
.service-card.featured h3 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 2.6vw, 2.4rem);
  font-weight: 400;
  letter-spacing: -0.015em;
}
.service-card.featured p { max-width: 52ch; font-size: 1.02rem; margin-top: 0.75rem; }
.service-card.featured .card-top { grid-column: 1 / -1; }
.service-card.featured .chips { justify-content: flex-end; }
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-index {
  font: 500 0.7rem var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--text-3);
}
.service-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--accent-2);
  transition: background 0.3s, border-color 0.3s;
}
.card:hover .service-icon { background: var(--accent-soft); border-color: rgba(232, 184, 92, 0.35); }
.service-card p { flex: 1; color: var(--text-2); font-size: 0.95rem; }

/* -------------------------------------------------------------- Showcase */
.showcase {
  background: var(--bg-2);
  border-block: 1px solid var(--line);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
.tabs [role="tab"] {
  position: relative;
  padding: 0.95rem 1.1rem;
  color: var(--text-2);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s;
}
.tabs [role="tab"]:hover { color: var(--text); }
.tabs [role="tab"][aria-selected="true"] { color: var(--text); }
.tabs [role="tab"]::after {
  content: "";
  position: absolute;
  left: 0.6rem;
  right: 0.6rem;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.tabs [role="tab"][aria-selected="true"]::after { transform: scaleX(1); }

.panel {
  display: none;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.panel.is-active { display: grid; }
.panel.is-in { animation: fade-up 0.55s var(--ease) both; }
.panel-copy h3 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.panel-copy > p { margin-top: 1.1rem; color: var(--text-2); font-size: 1.02rem; }
.panel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.75rem;
}
.panel-tags span {
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-2);
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: 0.02em;
}

/* Product mock-ups */
.mock {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: #0b1018;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
  font-size: 0.8rem;
}
.mock-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
}
.mock-bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}
.mock-title {
  margin-left: 0.5rem;
  font: 500 0.7rem var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--text-3);
}
.mock-body { display: grid; gap: 0.85rem; padding: 0.9rem; }

.kpis {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}
.kpis.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.kpi {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
}
.kpi small {
  display: block;
  font: 500 0.62rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}
.kpi b {
  display: inline-block;
  margin-top: 0.25rem;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.delta {
  margin-left: 0.4rem;
  font: 500 0.68rem var(--font-mono);
}
.delta.up { color: var(--signal); }
.delta.down { color: var(--rose); }

.chart {
  padding: 0.75rem 0.85rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
}
.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text-3);
  font: 500 0.66rem var(--font-mono);
  letter-spacing: 0.04em;
}
.legend { display: inline-flex; align-items: center; gap: 0.35rem; white-space: nowrap; }
.legend i { width: 10px; height: 2px; border-radius: 2px; margin-left: 0.4rem; }
.legend i:first-child { margin-left: 0; }
.legend .l-teal { background: var(--signal); }
.legend .l-gold { background: var(--accent); }
.legend .l-dim { background: rgba(255, 255, 255, 0.25); }

.line-chart,
.bar-chart,
.flow-svg,
.gauge { width: 100%; height: auto; }
.line-chart .gridlines path { stroke: rgba(255, 255, 255, 0.06); }
.line-chart .band { fill: rgba(232, 184, 92, 0.1); opacity: 0; transition: opacity 0.8s 0.9s; }
.line-chart .actual {
  fill: none;
  stroke: var(--signal);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.6s var(--ease);
}
.line-chart .forecast {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 5 5;
  opacity: 0;
  transition: opacity 0.8s 1s;
}
.line-chart .today { stroke: rgba(255, 255, 255, 0.2); stroke-dasharray: 3 3; }
.chart-label {
  font: 500 9px var(--font-mono);
  fill: var(--text-3);
  letter-spacing: 0.04em;
}
.mock.is-in .actual { stroke-dashoffset: 0; }
.mock.is-in .forecast,
.mock.is-in .band { opacity: 1; }

.bar-chart .bar {
  fill: var(--signal);
  opacity: 0.85;
  transform: scaleY(0);
  transform-box: fill-box;
  transform-origin: bottom;
  transition: transform 0.9s var(--ease);
}
.bar-chart .bar.dip { fill: var(--rose); }
.bar-chart .bar.proj { fill: rgba(255, 255, 255, 0.18); }
.bar-chart .bar:nth-child(n) { transition-delay: calc(var(--i, 0) * 60ms); }
.mock.is-in .bar { transform: scaleY(1); }

.health-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 0.65rem;
}
.gauge-card {
  position: relative;
  display: grid;
  align-content: center;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
}
.gauge-bg { fill: none; stroke: rgba(255, 255, 255, 0.08); stroke-width: 10; stroke-linecap: round; }
.gauge-fg {
  --v: 78; /* health score shown by the mock-up */
  fill: none;
  stroke: var(--signal);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 0 100;
  transition: stroke-dasharray 1.5s var(--ease);
}
.mock.is-in .gauge-fg { stroke-dasharray: var(--v) 100; }
.gauge-val {
  position: absolute;
  left: 0;
  right: 0;
  top: 52%;
  text-align: center;
}
.gauge-val b {
  display: block;
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.gauge-val small {
  display: block;
  margin-top: 0.3rem;
  font: 500 0.6rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}

.mock-table { width: 100%; border-collapse: collapse; }
.mock-table th,
.mock-table td {
  padding: 0.5rem 0.5rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.mock-table th,
.mock-table td:first-child { white-space: nowrap; }
.mock-table th {
  font: 500 0.62rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}
.mock-table td { color: var(--text-2); font-size: 0.78rem; }
.mock-table td:first-child { color: var(--text); font-weight: 600; }
.mock-table tr:last-child td { border-bottom: 0; }

.alerts li,
.runs p {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.5rem 0;
  border-top: 1px solid var(--line);
  color: var(--text-2);
  font-size: 0.78rem;
  line-height: 1.45;
}
.runs p span {
  flex: none;
  font: 500 0.68rem/1.7 var(--font-mono);
  color: var(--text-3);
}
.runs-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.25rem;
  font: 500 0.66rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
}
.pipeline li {
  position: relative;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-2);
}
.pipeline li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -0.5rem;
  width: 0.5rem;
  height: 1px;
  background: var(--line-strong);
}
.pipeline b {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.pipeline small {
  display: block;
  margin-top: 0.15rem;
  font: 500 0.6rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}
.pipeline li.attn { border-color: rgba(232, 184, 92, 0.5); background: var(--accent-soft); }
.pipeline li.attn b { color: var(--accent-2); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
}
.agent-log {
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
  font-size: 0.74rem;
}
.log-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.45rem;
  font: 500 0.66rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
}
.log-head .dot { margin-top: 0; }
.agent-log p {
  display: flex;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-top: 1px dashed var(--line);
  color: var(--text-2);
  line-height: 1.45;
}
.agent-log p span { flex: none; font-family: var(--font-mono); color: var(--text-3); }

.flow {
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
}
.flow-edges path { fill: none; stroke: var(--line-strong); stroke-width: 1.25; }
.fnode rect { fill: #0e131b; stroke: var(--line-strong); }
.fnode.agent rect { stroke: var(--accent); }
.fnode text {
  font: 500 10px var(--font-mono);
  fill: var(--text-2);
}
.fnode circle.ok { fill: var(--signal); }
.fnode circle.gold { fill: var(--accent); }

/* ------------------------------------------------- Built for your business */
.fit-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.fit-copy .lead { margin-top: 1.25rem; }
.compare { padding: 0; }
.compare:hover { transform: none; }
.compare-head,
.compare-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.compare-head span {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  font: 500 0.68rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.compare-head .compare-us { color: var(--accent-2); background: var(--accent-soft); }
.compare-row span {
  position: relative;
  padding: 1.1rem 1.5rem 1.1rem 3rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.93rem;
  line-height: 1.5;
}
.compare-row:last-child span { border-bottom: 0; }
.compare-row .no { color: var(--text-3); }
.compare-row .yes { color: var(--text); background: rgba(232, 184, 92, 0.05); }
.compare-row span::before {
  content: "";
  position: absolute;
  left: 1.5rem;
  top: 1.3rem;
  width: 14px;
  height: 14px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 14px;
}
.compare-row .no::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23f47c96' stroke-width='2.5' stroke-linecap='round'><path d='M6 6l12 12M18 6L6 18'/></svg>");
}
.compare-row .yes::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235fd3c4' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12.5l4.5 4.5L19 7'/></svg>");
}

/* ------------------------------------------------ AI, ML and deep learning */
.intelligence {
  background:
    radial-gradient(50% 40% at 12% 0%, rgba(95, 211, 196, 0.07), transparent 70%),
    var(--bg);
}
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}
.ai-card { display: flex; flex-direction: column; gap: 0.85rem; }
.ai-card p { flex: 1; color: var(--text-2); font-size: 0.95rem; }
.ai-kind {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
  font: 500 0.68rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.ai-kind::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-3);
}
.ai-kind.ml::before { background: var(--signal); }
.ai-kind.dl::before { background: var(--accent); }
.ai-kind.llm::before { background: linear-gradient(135deg, var(--accent), var(--signal)); }

.ai-stack {
  margin-top: 3rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.stack-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 2.25rem;
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--line);
}
.stack-flow li {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
}
.stack-flow li small {
  font: 500 0.64rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}
.stack-flow li:nth-child(3) { border-color: rgba(232, 184, 92, 0.55); background: var(--accent-soft); }
.stack-flow li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -2.25rem;
  width: 2.25rem;
  height: 1px;
  background: var(--line-strong);
}
.ai-practice {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.ai-practice > div {
  padding: 1.5rem 1.75rem;
  border-left: 1px solid var(--line);
}
.ai-practice > div:first-child { border-left: 0; }
.ai-practice h4 { font-size: 1rem; font-weight: 700; }
.ai-practice p { margin-top: 0.4rem; color: var(--text-2); font-size: 0.9rem; }

/* ------------------------------------------------------------ Methodology */
.method {
  background: var(--bg-2);
  border-block: 1px solid var(--line);
}
.method-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.1rem;
}
.method-step {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.6rem 1.5rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.method-num {
  font: 500 0.7rem var(--font-mono);
  letter-spacing: 0.12em;
  color: var(--accent);
}
.method-step h3 { font-size: 1.15rem; }
.method-desc { flex: 1; color: var(--text-2); font-size: 0.93rem; }
.method-out {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-top: 0.25rem;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line);
  font-size: 0.88rem;
  font-weight: 600;
}
.method-out span {
  font: 500 0.62rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.method-loop {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1.5rem 3rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgba(232, 184, 92, 0.07), transparent 60%),
    var(--surface);
}
.method-loop p { color: var(--text-2); }
.method-loop b { color: var(--text); font-weight: 600; }
.method-targets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}
.method-targets li {
  padding: 0.8rem 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
}
.method-targets span {
  display: block;
  font: 500 0.62rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}
.method-targets b {
  display: block;
  margin-top: 0.35rem;
  font: 400 1.35rem/1.1 var(--font-display);
  color: var(--accent-2);
}

/* -------------------------------------------------------------- Approach */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 1rem;
}
.steps::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--line-strong) 35%, var(--line-strong) 75%, transparent);
}
.step { position: relative; padding-top: 2.25rem; }
.step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 13px;
  height: 13px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
  box-shadow: 0 0 0 5px var(--bg);
}
.step-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  font: 500 0.7rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.step-meta b { color: var(--accent); font-weight: 500; }
.step h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.step p { margin-top: 0.75rem; color: var(--text-2); font-size: 0.95rem; }

/* ----------------------------------------------------------------- Stats */
.stats {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.stat {
  padding: 2.75rem 2rem;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: 0; padding-left: 0; }
.stat b {
  display: block;
  font: 400 clamp(2.5rem, 4vw, 3.5rem)/1 var(--font-display);
  letter-spacing: -0.02em;
}
.stat .unit {
  margin: 0 0.15em;
  font-size: 0.42em;
  font-style: italic;
  color: var(--accent-2);
}
.stat small {
  display: block;
  margin-top: 0.7rem;
  color: var(--text-2);
  font-size: 0.92rem;
}

/* ------------------------------------------------------------ Principles */
.principles-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.principles-intro { position: sticky; top: calc(var(--header-h) + 2rem); }
.principles-intro .lead { margin-top: 1.25rem; }
.principles-cta { margin-top: 2rem; }
.principle {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.85rem 0;
  border-top: 1px solid var(--line);
}
.principle:last-child { border-bottom: 1px solid var(--line); }
.principle-num {
  font: 400 1.7rem/1 var(--font-display);
  font-style: italic;
  color: var(--accent);
}
.principle h3 { font-size: 1.3rem; }
.principle p { margin-top: 0.55rem; color: var(--text-2); }

/* ------------------------------------------------------------------- FAQ */
.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.faq-grid .lead { margin-top: 1.25rem; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 0;
  list-style: none;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  transition: color 0.2s;
}
.faq summary:hover { color: var(--accent-2); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  flex: none;
  width: 12px;
  height: 12px;
  background:
    linear-gradient(var(--text-2), var(--text-2)) center / 12px 1.5px no-repeat,
    linear-gradient(var(--text-2), var(--text-2)) center / 1.5px 12px no-repeat;
  transition: transform 0.3s var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p {
  max-width: 62ch;
  padding-bottom: 1.4rem;
  color: var(--text-2);
  animation: fade-up 0.35s var(--ease) both;
}

/* --------------------------------------------------------------- Contact */
.contact {
  background:
    radial-gradient(55% 45% at 85% 15%, rgba(232, 184, 92, 0.09), transparent 70%),
    var(--bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.contact-copy .lead { margin-top: 1.25rem; }
.contact-alt {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 2.25rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}
.contact-form { padding: 2rem; }
.contact-form:hover { transform: none; }
.form-fields { display: grid; gap: 1.1rem; }
.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.field { display: grid; gap: 0.45rem; }
.field label { font-size: 0.85rem; font-weight: 600; color: var(--text-2); }
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { resize: vertical; min-height: 120px; }
.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a3acb8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px;
}
.field select option { background: var(--surface-2); color: var(--text); }
.field :is(input, textarea, select):focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field ::placeholder { color: var(--text-3); }
.was-validated .field :invalid { border-color: var(--rose); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-top: 0.25rem;
}
.form-note { font-size: 0.8rem; color: var(--text-3); max-width: 28ch; }
.form-error { color: var(--rose); font-size: 0.9rem; }
.form-error a { text-decoration: underline; }
.form-success { display: none; padding: 0.5rem 0; }
.form-success p { margin-top: 0.75rem; color: var(--text-2); }
.form-success a { color: var(--accent-2); text-decoration: underline; }
.is-sent .form-fields { display: none; }
.is-sent .form-success { display: block; animation: fade-up 0.5s var(--ease) both; }

/* ---------------------------------------------------------------- Footer */
.site-footer {
  padding-top: 4rem;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  padding-bottom: 3rem;
}
.footer-brand p {
  max-width: 34ch;
  margin-top: 1.1rem;
  color: var(--text-2);
  font-size: 0.95rem;
}
.footer-col h3 {
  margin-bottom: 1.1rem;
  font: 500 0.7rem var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}
.footer-col a {
  display: block;
  padding: 0.3rem 0;
  color: var(--text-2);
  font-size: 0.95rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  font-size: 0.85rem;
}
.footer-bottom a:hover { color: var(--text); }

/* ------------------------------------------------------- Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.09s; }
.reveal[data-delay="2"] { transition-delay: 0.18s; }
.reveal[data-delay="3"] { transition-delay: 0.27s; }

/* ------------------------------------------------------------ Keyframes */
@keyframes pulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.75); opacity: 0; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}
@keyframes scene-progress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* ------------------------------------------------------------ Responsive */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* Nine cards in two columns leave one alone; let it take the row. */
  .service-card:last-child { grid-column: 1 / -1; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 3rem; }
  .steps::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { padding: 2rem 1.5rem; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .method-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fc-1 { left: -4%; top: -10%; }
  .fc-2 { right: -4%; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { width: 100%; max-width: 560px; margin: 4.5rem auto 0; }
  .fc-1 { left: 0; top: -14%; }
  .fc-2 { right: 0; top: 42%; }
  .fc-3 { display: none; }
}

@media (max-width: 900px) {
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem var(--gutter) 1.5rem;
    background: rgba(7, 9, 13, 0.97);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s var(--ease);
  }
  .nav a { padding: 0.85rem 0.75rem; font-size: 1.05rem; border-radius: 10px; }
  .nav-open .nav { opacity: 1; transform: none; pointer-events: auto; }
  .nav-toggle { display: block; }
  .nav-actions .btn { padding: 0.65rem 0.95rem; font-size: 0.84rem; }
  .nav-actions .btn svg { display: none; }

  .section-head.split { grid-template-columns: 1fr; gap: 1.25rem; align-items: start; }
  .panel { grid-template-columns: 1fr; }
  .principles-grid,
  .faq-grid,
  .fit-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .method-loop { grid-template-columns: 1fr; }
  .pillar { border-left: 0; border-top: 1px solid var(--line); }
  .pillar:first-child { border-top: 0; }
  .pillar + .pillar::before { top: 0; left: 2.5rem; transform: translateY(-50%) rotate(135deg); }
  .principles-intro { position: static; }
  .ai-practice { grid-template-columns: 1fr; }
  .ai-practice > div { border-left: 0; border-top: 1px solid var(--line); }
  .ai-practice > div:first-child { border-top: 0; }
}

@media (max-width: 640px) {
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .service-card.featured { grid-column: auto; grid-template-columns: 1fr; }
  .service-card.featured .chips { justify-content: flex-start; }
  .steps { grid-template-columns: 1fr; row-gap: 2.5rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat { padding: 1.75rem 0; border-left: 0; }
  .stat + .stat { border-top: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .field-row { grid-template-columns: 1fr; }
  .contact-form { padding: 1.5rem; }
  .fc { min-width: 0; max-width: 200px; padding: 0.7rem 0.8rem; }
  .fc-2 { display: none; }
  /* Phones: the graph is too small to float cards over, so they sit beneath it. */
  .hero-visual { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
  .ops-canvas { grid-column: 1 / -1; }
  .fc { position: static; max-width: none; animation: none; }
  .fc-time { display: none; }
  .fc { display: none; }
  .fc.is-active:not(.fc-2) { display: block; }
  .scene-switch { position: static; grid-column: 1 / -1; order: -1; justify-content: center; flex-wrap: wrap; border-radius: 16px; }
  .scene-switch button { padding: 0.35rem 0.5rem; font-size: 0.56rem; letter-spacing: 0.06em; }
  .health-grid,
  .split { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pipeline li::after { display: none; }
  .mock-table th:nth-child(3),
  .mock-table td:nth-child(3) { display: none; }
  .ai-grid { grid-template-columns: 1fr; }
  .method-steps,
  .method-targets { grid-template-columns: 1fr; }
  .compare-head { display: none; }
  .compare-row { grid-template-columns: 1fr; }
  .compare-row .no { border-bottom: 0; padding-bottom: 0.4rem; }
  .compare-row .yes { padding-top: 0.4rem; background: none; }
  .stack-flow { flex-direction: column; align-items: stretch; gap: 0.75rem; }
  .stack-flow li { white-space: normal; }
  .stack-flow li:not(:last-child)::after { top: 100%; right: auto; left: 1.5rem; width: 1px; height: 0.75rem; }
}

/* --------------------------------------------------- Motion preferences */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .fc,
  .ops-graph .pulse,
  .scene-switch button.is-active::after,
  .marquee-track { animation: none; }
  .scene, .fc { transition: none; }
  .panel.is-in,
  .is-sent .form-success,
  .faq details p { animation: none; }
  .line-chart .actual { stroke-dasharray: none; stroke-dashoffset: 0; transition: none; }
  .line-chart .forecast,
  .line-chart .band { opacity: 1; transition: none; }
  .bar-chart .bar { transform: none; transition: none; }
  .gauge-fg { stroke-dasharray: var(--v) 100; transition: none; }
  .card, .btn { transition: none; }
}