/* Aivora — one-page site
   Palette: midnight base, soft white text, one accent sampled from the logo (#6EA7FF). */

:root {
  --bg: #070b14;
  --bg-2: #0a0f1b;
  --surface: #0e1422;
  --line: rgba(232, 237, 245, 0.08);
  --line-strong: rgba(232, 237, 245, 0.14);
  --text: #e8edf5;
  --muted: #9aa6b8;
  --accent: #6ea7ff;
  --accent-ink: #06101f;
  --accent-soft: rgba(110, 167, 255, 0.14);
  --accent-line: rgba(110, 167, 255, 0.45);

  --font-head: 'Sora', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, sans-serif;

  /* 8px rhythm */
  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 32px; --s5: 48px; --s6: 64px; --s7: 96px;
  --section: clamp(96px, 13vw, 160px);
  --radius: 20px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --nav-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.12;
  text-wrap: balance;
}
h2 { font-size: clamp(2rem, 4.6vw, 3.25rem); }
h3 { font-size: 1.1875rem; letter-spacing: -0.01em; }
p { text-wrap: pretty; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.nowrap { white-space: nowrap; }

.skip-link {
  position: fixed; top: var(--s2); left: var(--s2); z-index: 200;
  padding: var(--s1) var(--s2); border-radius: 999px;
  background: var(--accent); color: var(--accent-ink); font-weight: 500;
  transform: translateY(-200%); transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: none; }

.container {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

/* Background motif: thin concentric rings echoing the emblem */
.bg-rings {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    repeating-radial-gradient(circle at 50% -10%, transparent 0 119px, rgba(232, 237, 245, 0.035) 119px 120px);
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 85%);
          mask-image: linear-gradient(to bottom, #000, transparent 85%);
}

/* ─── Eyebrow / headings ─── */
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-head);
  font-size: 0.8125rem; font-weight: 400;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s3);
}
.eyebrow::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}

.lead { color: var(--muted); font-size: 1.125rem; max-width: 56ch; margin-top: var(--s3); }

.section { padding-block: var(--section); position: relative; }
.section-head { margin-bottom: var(--s6); max-width: 720px; }
.section-head-center { margin-inline: auto; text-align: center; }
.section-head-center .lead { margin-inline: auto; }
.section-head-split { max-width: none; display: flex; flex-direction: column; gap: var(--s4); }
.section-head-split > div { max-width: 720px; }
@media (min-width: 860px) {
  .section-head-split { flex-direction: row; align-items: flex-end; justify-content: space-between; }
}

/* ─── Buttons & links ─── */
.btn {
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 var(--s3);
  border-radius: 999px; border: 1px solid transparent;
  font-family: var(--font-head); font-size: 0.9375rem; font-weight: 500; letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-sm { min-height: 40px; padding: 0 var(--s2); font-size: 0.875rem; }

.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #8bbaff; box-shadow: 0 8px 28px -10px rgba(110, 167, 255, 0.6); }

.btn-outline { border-color: var(--accent-line); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); background: var(--accent-soft); }

.btn-ghost { border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent-line); color: var(--accent); }

/* Gentle shimmer to draw the eye to the two primary actions */
.btn-shimmer::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 35%, rgba(255, 255, 255, 0.28) 50%, transparent 65%);
  transform: translateX(-120%);
  animation: shimmer 5.5s var(--ease) 2.4s infinite;
}
.btn-outline.btn-shimmer::after { background: linear-gradient(110deg, transparent 35%, rgba(110, 167, 255, 0.22) 50%, transparent 65%); animation-delay: 3s; }
@keyframes shimmer { 0% { transform: translateX(-120%); } 30%, 100% { transform: translateX(120%); } }

.text-link {
  display: inline-flex; gap: 6px; align-items: center;
  color: var(--accent); font-family: var(--font-head); font-size: 0.9375rem; font-weight: 500;
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}
.text-link:hover { gap: 10px; color: #8bbaff; }

/* ─── Nav ─── */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--nav-h);
  background: rgba(7, 11, 20, 0.72);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(7, 11, 20, 0.86); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--s3); }

.brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-head); font-size: 1.0625rem; font-weight: 500; letter-spacing: 0.04em;
}
.brand img { width: 36px; height: 36px; border-radius: 50%; }

.nav-toggle {
  display: inline-grid; place-items: center;
  width: 44px; height: 44px; border-radius: 50%;
  background: none; border: 1px solid var(--line-strong); color: var(--text); cursor: pointer;
}
.nav-toggle-bar, .nav-toggle-bar::before {
  display: block; width: 16px; height: 1.5px; background: currentColor; border-radius: 2px;
  transition: transform 0.3s var(--ease);
}
.nav-toggle-bar { position: relative; transform: translateY(-3px); }
.nav-toggle-bar::before { content: ''; position: absolute; top: 6px; left: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(-6px) rotate(-90deg); }

.nav-menu {
  position: absolute; top: var(--nav-h); left: 0; right: 0;
  padding: var(--s3) clamp(20px, 5vw, 40px) var(--s4);
  background: rgba(7, 11, 20, 0.97); border-bottom: 1px solid var(--line);
  display: flex; flex-direction: column; gap: var(--s3);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}
.nav-menu.is-open { opacity: 1; visibility: visible; transform: none; }
.nav-menu ul { display: flex; flex-direction: column; gap: 4px; }
.nav-menu ul a {
  display: block; padding: 10px 0;
  color: var(--muted); font-size: 1rem;
  transition: color 0.25s var(--ease);
}
.nav-menu ul a:hover, .nav-menu ul a.is-active { color: var(--text); }
.nav-menu .btn { align-self: flex-start; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .nav-menu {
    position: static; padding: 0; background: none; border: 0;
    flex-direction: row; align-items: center; gap: var(--s4);
    opacity: 1; visibility: visible; transform: none;
  }
  .nav-menu ul { flex-direction: row; gap: var(--s4); }
  .nav-menu ul a { position: relative; padding: 6px 0; font-size: 0.9375rem; }
  .nav-menu ul a::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
    background: var(--accent); transform: scaleX(0); transform-origin: left;
    transition: transform 0.35s var(--ease);
  }
  .nav-menu ul a.is-active::after { transform: scaleX(1); }
}

/* ─── Hero ─── */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  min-height: 100vh; min-height: 100svh;
  display: grid; place-items: center;
  padding: calc(var(--nav-h) + var(--s6)) 0 var(--s7);
  text-align: center;
}
.hero-network { position: absolute; inset: -10% 0; width: 100%; height: 120%; z-index: -1; will-change: transform; }
.hero-glow {
  position: absolute; z-index: -1; left: 50%; top: 34%;
  width: min(720px, 120vw); aspect-ratio: 1; transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(110, 167, 255, 0.13), transparent);
  pointer-events: none;
}
.hero-watermark {
  position: absolute; z-index: -1; left: 50%; top: 50%;
  width: min(860px, 150vw); height: auto; transform: translate(-50%, -50%);
  border-radius: 50%; opacity: 0.045; pointer-events: none;
  -webkit-mask-image: radial-gradient(closest-side, #000 55%, transparent);
          mask-image: radial-gradient(closest-side, #000 55%, transparent);
}

.hero-inner { display: flex; flex-direction: column; align-items: center; }

.hero-logo {
  position: relative; overflow: hidden;
  width: 112px; height: 112px; border-radius: 50%;
  margin-bottom: var(--s5);
  box-shadow: 0 0 0 1px var(--line-strong), 0 20px 60px -20px rgba(110, 167, 255, 0.45);
}
.hero-logo img { width: 100%; height: 100%; }

.hero-title { font-size: clamp(2.25rem, 6.4vw, 4.5rem); max-width: 16ch; font-weight: 500; }
.hero-sub { color: var(--muted); font-size: clamp(1.0625rem, 1.6vw, 1.25rem); max-width: 50ch; margin-top: var(--s3); }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s2); margin-top: var(--s5); }

.scroll-cue {
  position: absolute; left: 50%; bottom: var(--s4);
  display: grid; place-items: center; width: 44px; height: 44px; margin-left: -22px;
  border-radius: 50%; border: 1px solid var(--line-strong); color: var(--muted);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.scroll-cue:hover { color: var(--accent); border-color: var(--accent-line); }

/* Load sequence: logo fades in with a light sweep, then copy rises in */
.js .hero-logo { animation: logoIn 1.1s var(--ease) both; }
.js .hero-logo::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.55) 50%, transparent 70%);
  transform: translateX(-130%);
  animation: sweep 1.3s var(--ease) 0.5s both;
}
.js .hero-rise { animation: rise 0.9s var(--ease) both; animation-delay: calc(0.7s + var(--d) * 0.14s); }
.js .scroll-cue { animation: rise 0.9s var(--ease) 1.5s both, nudge 2.4s ease-in-out 2.6s infinite; }

@keyframes logoIn { from { opacity: 0; transform: scale(0.94); } to { opacity: 1; transform: none; } }
@keyframes sweep { to { transform: translateX(130%); } }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes nudge { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ─── Cards ─── */
.cards { display: grid; gap: var(--s3); }
@media (min-width: 640px) { .cards-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .cards-4 { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 900px) { .cards-3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  position: relative;
  padding: var(--s4);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent), var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 20px 40px -28px rgba(0, 0, 0, 0.8);
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.card:hover, .card:focus-within {
  transform: translateY(-4px);
  border-color: var(--accent-line);
  box-shadow: 0 24px 50px -30px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(110, 167, 255, 0.12), 0 0 32px -8px rgba(110, 167, 255, 0.28);
}
.card h3 { margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 1rem; }

.card-icon, .step-icon {
  display: grid; place-items: center;
  width: 44px; height: 44px; margin-bottom: var(--s4);
  border-radius: 12px; border: 1px solid var(--line-strong); color: var(--accent);
}
.card-icon svg, .step-icon svg, .social svg, .footer-socials svg {
  width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.4;
  stroke-linecap: round; stroke-linejoin: round;
}

/* Products */
.product { display: flex; flex-direction: column; }
.product-tier {
  font-family: var(--font-head); font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: var(--s2);
}
.product h3 { font-size: 1.5rem; }
.features { margin: var(--s3) 0 var(--s4); padding-top: var(--s3); border-top: 1px solid var(--line); display: grid; gap: 10px; }
.features li { position: relative; padding-left: 20px; font-size: 0.9375rem; color: var(--text); }
.features li::before {
  content: ''; position: absolute; left: 0; top: 0.62em;
  width: 6px; height: 6px; border-radius: 50%; border: 1px solid var(--accent);
}
.product .text-link { margin-top: auto; }

/* ─── Group diagram ─── */
.diagram {
  display: grid; grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto clamp(96px, 14vw, 140px) auto;
  max-width: 820px; margin-inline: auto;
}
.diagram-top { grid-column: 1 / -1; grid-row: 1; display: contents; }
.diagram-top li { display: flex; justify-content: center; padding-inline: 4px; }
.diagram-lines { grid-column: 1 / -1; grid-row: 2; width: 100%; height: 100%; overflow: visible; }
.diagram-base { grid-column: 1 / -1; grid-row: 3; display: flex; justify-content: center; }

.lines-base path, .lines-flow path { fill: none; vector-effect: non-scaling-stroke; }
.lines-base path { stroke: var(--line-strong); stroke-width: 1; }
.lines-flow path { stroke: var(--accent); stroke-width: 1.5; stroke-linecap: round; stroke-dasharray: 0.08 0.92; opacity: 0; }

.node {
  position: relative;
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 2px;
  width: 100%; max-width: 220px;
  padding: var(--s2) 10px;
  border-radius: 16px; border: 1px solid var(--line);
  background: var(--surface);
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease), box-shadow 0.45s var(--ease), opacity 0.6s var(--ease);
}
.node::after { /* glowing connector point */
  content: ''; position: absolute; left: 50%; bottom: -4px; width: 7px; height: 7px; margin-left: -3.5px;
  border-radius: 50%; background: var(--bg); border: 1px solid var(--accent-line);
  transition: background-color 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
a.node:hover { transform: translateY(-4px); border-color: var(--accent-line); box-shadow: 0 0 30px -10px rgba(110, 167, 255, 0.4); }
.node-name { font-family: var(--font-head); font-weight: 500; font-size: clamp(0.9375rem, 2.4vw, 1.125rem); }
.node-role { color: var(--muted); font-size: clamp(0.75rem, 1.8vw, 0.875rem); line-height: 1.35; }

.node-aivora {
  flex-direction: row; gap: var(--s2); text-align: left;
  max-width: none; width: auto; padding: 14px var(--s3) 14px 14px;
  border-color: var(--accent-line);
}
.node-aivora > span { display: flex; flex-direction: column; }
.node-aivora img { width: 40px; height: 40px; border-radius: 50%; }
.node-aivora::after { top: -4px; bottom: auto; }

/* Diagram animation states (only when JS is present and motion allowed) */
.js .diagram .node { opacity: 0.35; }
.js .diagram.is-live .node { opacity: 1; }
.js .diagram.is-live .node-aivora {
  box-shadow: 0 0 0 1px rgba(110, 167, 255, 0.15), 0 0 44px -10px rgba(110, 167, 255, 0.5);
}
.js .diagram.is-live .node::after { background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.js .diagram.is-live .diagram-top .node { transition-delay: calc(0.9s + var(--n) * 0.28s); }
.js .diagram.is-live .diagram-top .node::after { transition-delay: calc(0.9s + var(--n) * 0.28s); }

.js .lines-base path { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.2s var(--ease) 0.35s; }
.js .lines-base path:nth-child(2) { transition-delay: 0.55s; }
.js .lines-base path:nth-child(3) { transition-delay: 0.75s; }
.js .diagram.is-live .lines-base path { stroke-dashoffset: 0; }
.js .diagram.is-live .lines-flow path { animation: flow 3.2s linear infinite; animation-delay: 1.8s; }
.js .diagram.is-live .lines-flow path:nth-child(2) { animation-delay: 2.3s; }
.js .diagram.is-live .lines-flow path:nth-child(3) { animation-delay: 2.8s; }
@keyframes flow {
  0% { stroke-dashoffset: 1; opacity: 0; }
  10% { opacity: 1; }
  80% { opacity: 1; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

/* ─── Steps ─── */
.steps { display: grid; gap: var(--s5); counter-reset: step; }
@media (min-width: 860px) { .steps { grid-template-columns: repeat(3, 1fr); gap: var(--s4); } }
.step { position: relative; padding-top: var(--s4); border-top: 1px solid var(--line); }
.step::before {
  content: ''; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--accent);
}
.step-num { position: absolute; top: var(--s4); right: 0; font-family: var(--font-head); font-size: 0.8125rem; color: var(--muted); letter-spacing: 0.1em; }
.step h3 { font-size: 1.5rem; margin-bottom: 12px; }
.step p { color: var(--muted); max-width: 34ch; }

/* ─── Connect ─── */
.connect-panel {
  display: grid; gap: var(--s5);
  padding: clamp(32px, 6vw, 64px);
  border-radius: calc(var(--radius) + 8px);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(110, 167, 255, 0.07), transparent 55%),
    var(--surface);
}
@media (min-width: 900px) { .connect-panel { grid-template-columns: 1.3fr 1fr; align-items: center; } }

.emails { display: grid; gap: 10px; margin: var(--s4) 0; }
.emails a {
  font-family: var(--font-head); font-size: clamp(1rem, 2.4vw, 1.25rem);
  overflow-wrap: anywhere;
  background: linear-gradient(var(--accent), var(--accent)) 0 100% / 0 1px no-repeat;
  transition: background-size 0.4s var(--ease), color 0.3s var(--ease);
}
.emails a:hover { color: var(--accent); background-size: 100% 1px; }

.socials { display: grid; gap: 12px; }
.social {
  display: flex; align-items: center; gap: var(--s2);
  min-height: 60px; padding: 0 var(--s3);
  border-radius: 16px; border: 1px solid var(--line-strong);
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.social svg { color: var(--accent); }
.social:hover { border-color: var(--accent-line); background: var(--accent-soft); transform: translateX(4px); }

/* ─── Footer ─── */
.footer { padding: var(--s6) 0 var(--s5); border-top: 1px solid var(--line); font-size: 0.9375rem; }
.footer-top { display: flex; flex-direction: column; gap: var(--s4); }
@media (min-width: 760px) { .footer-top { flex-direction: row; align-items: center; justify-content: space-between; } }

.footer-links { display: flex; flex-wrap: wrap; gap: var(--s1) var(--s4); }
.footer-links a { color: var(--muted); transition: color 0.25s var(--ease); }
.footer-links a:hover { color: var(--text); }

.footer-socials { display: flex; gap: 10px; }
.footer-socials a {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--line-strong); color: var(--muted);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.footer-socials a:hover { color: var(--accent); border-color: var(--accent-line); }
.footer-socials svg { width: 18px; height: 18px; }

.footer-official { margin-top: var(--s5); padding-top: var(--s4); border-top: 1px solid var(--line); color: var(--muted); font-size: 0.875rem; max-width: 80ch; }

.footer-legal { margin-top: var(--s3); color: var(--muted); font-size: 0.875rem; }
.footer-legal summary {
  cursor: pointer; display: inline-flex; align-items: center; gap: 8px; padding: 6px 0;
  color: var(--text); list-style: none;
}
.footer-legal summary::-webkit-details-marker { display: none; }
.footer-legal summary::after { content: '+'; color: var(--accent); transition: transform 0.3s var(--ease); }
.footer-legal[open] summary::after { transform: rotate(45deg); }
.legal-grid { display: grid; gap: var(--s4); padding-top: var(--s3); }
@media (min-width: 760px) { .legal-grid { grid-template-columns: 1fr 1fr; } }
.legal-grid h3 { font-size: 0.9375rem; color: var(--text); margin-bottom: var(--s1); }
.legal-grid ul { display: grid; gap: 4px; margin-bottom: var(--s2); }

.footer-copy { margin-top: var(--s4); color: var(--muted); font-size: 0.8125rem; }

/* ─── Scroll reveals ─── */
.js .reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease), border-color 0.45s var(--ease), box-shadow 0.45s var(--ease);
  transition-delay: calc(var(--i, 0) * 0.12s);
}
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .card.reveal.is-visible:hover, .js .card.reveal.is-visible:focus-within { transform: translateY(-4px); transition-delay: 0s; }

/* ─── Reduced motion: everything static and visible ─── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
  .js .diagram .node { opacity: 1; }
  .js .lines-base path { stroke-dashoffset: 0; }
  .lines-flow { display: none; }
  .js .hero-logo::after { display: none; }
  .js .diagram .node::after { background: var(--accent); }
  .card:hover, .node:hover, .btn:hover, .social:hover { transform: none !important; }
}