/* =====================================================================
   Arcanix Global · main stylesheet
   1. Tokens   2. Base   3. Layout   4. Components   5. Header
   6. Hero     7. Solutions   8. Approach   9. Engagement
   10. Contact 11. Footer     12. Motion & reveal   13. Responsive
   ===================================================================== */

/* 1. Tokens ----------------------------------------------------------- */
:root {
  color-scheme: dark;
  --bg: #060a14;
  --bg-2: #0a1020;
  --surface: #0d1526;
  --surface-2: #111b30;
  --ink: #f3f6fc;
  --muted: #a3b0c6;
  --dim: #6f7c92;
  --accent: #5b8cff;
  --accent-2: #8fb3ff;
  --cyan: #4fd1e8;
  --violet: #8b7bff;
  --success: #3ee08f;
  --danger: #ff6b7a;
  --border: #8fb3ff1f;
  --border-strong: #8fb3ff3d;
  --line: #ffffff0e;

  --font: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --radius: 18px;
  --radius-sm: 12px;
  --container: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: clamp(60px, 2.2vw + 44px, 80px);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --grad: linear-gradient(100deg, #b5ceff, var(--accent) 40%, var(--cyan));
}

/* 2. Base ------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--ink); background: var(--bg); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -.03em; font-weight: 600; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: #5b8cff55; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }
.icon { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: 10px; background: var(--accent); color: #fff; }
.skip-link:focus { top: 12px; }

/* 3. Layout ----------------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.section { position: relative; padding: clamp(72px, 11vw, 128px) 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 56px); }
.section-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; max-width: none; }
.kicker { margin-bottom: 14px; font: 500 12px/1.4 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--cyan); }
h2 { font-size: clamp(30px, 4.6vw, 50px); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.section-lead { margin-top: 16px; max-width: 600px; font-size: clamp(16px, 1.8vw, 18px); color: var(--muted); }

/* 4. Components ------------------------------------------------------- */
.btn { position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 48px; padding: 0 22px; border: 0; border-radius: 12px; font-weight: 600; font-size: 15px; cursor: pointer; white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background-color .25s, border-color .25s; }
.btn .icon { width: 18px; height: 18px; transition: transform .25s var(--ease); }
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; border-radius: 10px; }
.btn-primary { color: #fff; background: linear-gradient(135deg, #4a7dff, #3a62e0 60%, #2f9fd0); box-shadow: 0 8px 24px -8px #3d6cf0aa, inset 0 1px 0 #ffffff33; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px -10px #3d6cf0cc, inset 0 1px 0 #ffffff33; }
.btn-primary:hover .icon { transform: translateX(3px); }
.btn-ghost { color: var(--ink); background: #0d1526b3; border: 1px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--accent-2); background: #121d35; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.card { position: relative; border-radius: var(--radius); background: linear-gradient(180deg, #0f1828, #0b1220); border: 1px solid var(--border); }
.icon-tile { display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: var(--cyan); background: linear-gradient(145deg, #4fd1e81f, #5b8cff14); border: 1px solid #4fd1e833;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), color .35s; }
.icon-tile .icon { width: 24px; height: 24px; }
.icon-tile.sm { width: 40px; height: 40px; border-radius: 12px; }
.icon-tile.sm .icon { width: 20px; height: 20px; }
.tag, .pill { font: 500 11.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.tag { color: var(--accent-2); }
.pill { display: inline-block; padding: 7px 12px; border-radius: 999px; color: var(--cyan); background: #4fd1e814; border: 1px solid #4fd1e82e; }

/* 5. Header ----------------------------------------------------------- */
/* frosted glass bar; a little denser once the page scrolls (is-scrolled set by JS) */
.site-header { position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  background: linear-gradient(180deg, #0d152699, #060a1466); border-bottom: 1px solid #ffffff14;
  box-shadow: inset 0 1px 0 #ffffff0f; backdrop-filter: blur(14px) saturate(160%); -webkit-backdrop-filter: blur(14px) saturate(160%);
  transition: border-color .4s var(--ease), box-shadow .4s var(--ease); }
/* gradients can't be transitioned, so the denser layer fades in on top instead */
.site-header::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, #0d1526cc, #060a14b3); opacity: 0; transition: opacity .4s var(--ease); pointer-events: none; }
.site-header.is-scrolled { border-color: var(--border); box-shadow: inset 0 1px 0 #ffffff14, 0 10px 30px -12px #000c; }
.site-header.is-scrolled::before { opacity: 1; }
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header, .site-header.is-scrolled { background: #060a14eb; }
}
/* header spans wider than page content on large screens */
.header-inner { display: flex; align-items: center; gap: clamp(16px, 2vw, 32px); height: 100%; max-width: 1600px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: clamp(15px, .3vw + 12px, 18px); letter-spacing: -.01em; }
.brand img { width: clamp(28px, 1vw + 20px, 38px); height: auto; aspect-ratio: 1; border-radius: 9px; box-shadow: 0 0 0 1px #ffffff1f, 0 4px 14px #2f5fd855; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { position: relative; padding: 8px clamp(10px, 1vw, 16px); border-radius: 10px; font-size: clamp(14px, .25vw + 11px, 16px); color: var(--muted); transition: color .2s, background-color .2s; }
.nav a:hover { color: var(--ink); background: #ffffff0a; }
.nav a.is-active { color: var(--ink); }
.nav a.is-active::after { content: ""; position: absolute; left: clamp(10px, 1vw, 16px); right: clamp(10px, 1vw, 16px); bottom: 2px; height: 2px; border-radius: 2px; background: var(--grad); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.lang-switch { display: inline-flex; padding: 3px; border-radius: 10px; background: #0d1526b3; border: 1px solid var(--border); }
.lang-switch button { padding: 5px 9px; border: 0; border-radius: 7px; background: none; font: 500 12px/1 var(--mono); letter-spacing: .06em; color: var(--dim); cursor: pointer; transition: color .2s, background-color .2s; }
.lang-switch button:hover { color: var(--ink); }
.lang-switch button[aria-pressed="true"] { color: var(--ink); background: #5b8cff33; }
.menu-toggle { display: none; place-items: center; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border); background: #0d1526b3; cursor: pointer; }

/* Section rail: fixed diamonds on the right (wide screens only, hidden over the hero; is-shown set by JS) */
.rail { display: none; position: fixed; top: 50%; right: clamp(14px, 1.6vw, 28px); z-index: 40; flex-direction: column; padding: 18px 0;
  opacity: 0; visibility: hidden; transform: translate3d(8px, -50%, 0); transition: opacity .4s var(--ease), transform .4s var(--ease), visibility .4s; }
.rail.is-shown { opacity: 1; visibility: visible; transform: translate3d(0, -50%, 0); }
.rail::before { content: ""; position: absolute; top: 0; bottom: 0; right: 9px; width: 1px; background: linear-gradient(180deg, transparent, #8fb3ff33 18%, #8fb3ff33 82%, transparent); }
.rail a { position: relative; display: flex; align-items: center; justify-content: flex-end; gap: 16px; height: 44px; padding-right: 6px; }
.rail a::after { content: ""; flex: none; width: 7px; height: 7px; background: #8fb3ff4d; transform: rotate(45deg); transition: background-color .3s, transform .35s var(--ease), box-shadow .35s; }
.rail span { font: 500 10px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--muted); text-shadow: 0 0 12px var(--bg), 0 0 4px var(--bg);
  opacity: 0; transform: translateX(6px); transition: opacity .3s, transform .35s var(--ease); pointer-events: none; }
.rail a:hover span, .rail a:focus-visible span, .rail a.is-active span { opacity: .7; transform: none; }
.rail a:hover::after { background: var(--accent-2); }
.rail a.is-active::after { background: linear-gradient(135deg, var(--accent-2), var(--cyan)); transform: rotate(45deg) scale(1.45); box-shadow: 0 0 14px 2px #5b8cff99; }
@media (min-width: 1200px) { .rail { display: flex; } }

/* 6. Hero ------------------------------------------------------------- */
.hero { position: relative; display: grid; align-content: center; min-height: 100vh; min-height: 100svh; padding: calc(var(--header-h) + 32px) 0 32px; overflow: hidden; text-align: center; isolation: isolate; }
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; will-change: transform; }
.orb.one { width: 50vmax; height: 50vmax; left: -14vmax; top: -18vmax; background: radial-gradient(circle, #2f5fd8 0, transparent 66%); opacity: .5; animation: drift1 34s ease-in-out infinite alternate; }
.orb.two { width: 42vmax; height: 42vmax; right: -16vmax; bottom: -20vmax; background: radial-gradient(circle, #128fb0 0, transparent 66%); opacity: .34; animation: drift2 40s ease-in-out infinite alternate; }
.orb.three { width: 30vmax; height: 30vmax; left: 50%; top: 36%; margin-left: -15vmax; background: radial-gradient(circle, #5a46e0 0, transparent 70%); opacity: .2; animation: drift3 28s ease-in-out infinite alternate; }
.beams { position: absolute; left: 50%; top: -30vh; width: 160vmax; height: 160vmax; margin-left: -80vmax;
  background: conic-gradient(from 180deg at 50% 0%, transparent 0deg, #5b8cff14 8deg, transparent 16deg, transparent 30deg, #4fd1e80f 36deg, transparent 44deg, transparent 316deg, #8b7bff12 324deg, transparent 332deg, transparent 344deg, #5b8cff14 352deg, transparent 360deg);
  animation: beam 12s ease-in-out infinite alternate; will-change: opacity; }
.grid { position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 64px 64px; background-position: center;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, #000 15%, transparent 72%); mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, #000 15%, transparent 72%); }
#network { position: absolute; inset: 0; width: 100%; height: 100%; }
.vignette { position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 42%, transparent 42%, #060a14d9 100%), linear-gradient(180deg, transparent 75%, var(--bg)); }

.hud { position: absolute; inset: 0; z-index: 0; pointer-events: none; font: 500 10.5px/1.6 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: #8fb3ff99; }
.readout { position: absolute; top: 50%; transform: translateY(-50%); display: grid; gap: 14px; opacity: 0; animation: fade-in 1s 1.6s forwards; }
.readout.left { left: clamp(20px, 3vw, 44px); text-align: left; }
.readout.right { right: clamp(20px, 3vw, 44px); text-align: right; }
.readout span { display: block; }
.readout b { display: block; color: var(--ink); font-weight: 500; letter-spacing: .08em; }
.readout .rule { width: 40px; height: 1px; background: linear-gradient(90deg, #4fd1e8aa, transparent); }
.readout.right .rule { margin-left: auto; background: linear-gradient(270deg, #4fd1e8aa, transparent); }
.sig { display: inline-flex !important; gap: 3px; align-items: flex-end; height: 12px; }
.sig i { width: 3px; background: var(--cyan); opacity: .85; animation: sig 2.4s ease-in-out infinite; }
.sig i:nth-child(1) { height: 30%; } .sig i:nth-child(2) { height: 55%; animation-delay: .3s; } .sig i:nth-child(3) { height: 80%; animation-delay: .6s; } .sig i:nth-child(4) { height: 100%; animation-delay: .9s; opacity: .35; }

.hero-content { position: relative; z-index: 1; max-width: 900px; }
.mark-wrap { position: relative; width: 88px; height: 88px; margin: 0 auto 36px; }
.mark-wrap .glow { position: absolute; inset: -40px; border-radius: 50%; background: radial-gradient(closest-side, #3d6cf04d, transparent); animation: breathe 6s ease-in-out infinite; }
.brackets { position: absolute; inset: -30px -54px; animation: bracket 5s ease-in-out infinite; }
.brackets i { position: absolute; width: 16px; height: 16px; border: 0 solid #8fb3ff66; }
.brackets i:nth-child(1) { top: 0; left: 0; border-top-width: 1.5px; border-left-width: 1.5px; border-top-left-radius: 6px; }
.brackets i:nth-child(2) { top: 0; right: 0; border-top-width: 1.5px; border-right-width: 1.5px; border-top-right-radius: 6px; }
.brackets i:nth-child(3) { bottom: 0; left: 0; border-bottom-width: 1.5px; border-left-width: 1.5px; border-bottom-left-radius: 6px; }
.brackets i:nth-child(4) { bottom: 0; right: 0; border-bottom-width: 1.5px; border-right-width: 1.5px; border-bottom-right-radius: 6px; }
.orbit { position: absolute; inset: -18px; width: auto; height: auto; max-width: none; overflow: visible; }
.orbit.two { inset: -34px; }
.orbit .track { fill: none; stroke: #8fb3ff38; stroke-width: 1; stroke-dasharray: 3 5; }
.orbit.two .track { stroke: #5b8cff22; stroke-dasharray: none; }
.orbit .dot-c { fill: var(--cyan); filter: drop-shadow(0 0 5px #4fd1e8); }
.orbit .dot-v { fill: var(--violet); filter: drop-shadow(0 0 5px #8b7bff); }
.mark { position: relative; width: 88px; height: 88px; border-radius: 21px; box-shadow: 0 0 0 1px #ffffff26, 0 14px 44px #2f5fd877; animation: float 7s ease-in-out infinite; }

.eyebrow { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px; padding: 7px 14px; border-radius: 999px; border: 1px solid #8fb3ff26; background: #0d1526a6;
  font: 500 11.5px/1.3 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--accent-2); }
.eyebrow .br { color: var(--dim); }
.hero-title { font-size: clamp(44px, 9vw, 104px); line-height: .98; letter-spacing: -.05em; font-weight: 700; }
.hero-title .w { display: inline-block; }
.hero-title .ch { display: inline-block; opacity: 0; transform: translate3d(0, 24px, 0); animation: letter 1.1s var(--ease) forwards; }
.hero-title .grad .ch { background: linear-gradient(100deg, #b5ceff 0%, #5b8cff 35%, #4fd1e8 60%, #b5ceff 100%); background-size: 600% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: letter 1.1s var(--ease) forwards, shine 10s linear infinite; }
.typed { margin-top: 24px; min-height: 1.3em; font-size: clamp(21px, 3.2vw, 30px); font-weight: 600; letter-spacing: -.02em; line-height: 1.3; }
.typed .word { background: linear-gradient(90deg, var(--accent-2), var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.caret { display: inline-block; width: 2px; height: 1.05em; margin-left: 3px; vertical-align: -.15em; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); animation: blink 1s steps(1) infinite; }
.lead { max-width: 620px; margin: 16px auto 0; font-size: clamp(16px, 2vw, 19px); color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 34px; }

.ticker { position: relative; z-index: 1; width: min(100% - 32px, 760px); margin: clamp(40px, 7vh, 72px) auto 0; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
  font: 500 11.5px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--dim); }
.ticker-track { display: flex; width: max-content; animation: marquee 60s linear infinite; }
.ticker-track span { padding: 0 22px; white-space: nowrap; }
.ticker-track span::after { content: "◆"; margin-left: 44px; color: #4fd1e8aa; font-size: 8px; vertical-align: 2px; }

/* 7. Solutions -------------------------------------------------------- */
/* compact top so the cards fit in view when jumping here from the nav */
#solutions { padding-top: clamp(28px, 4vw, 44px); scroll-margin-top: -12px; }
#solutions .section-head { margin-bottom: clamp(24px, 3vw, 32px); }
#solutions h2 { font-size: clamp(28px, 3.6vw, 42px); }
.solutions-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.solution { padding: clamp(22px, 2.4vw, 28px); overflow: hidden; transition: transform .35s var(--ease), border-color .35s, box-shadow .35s var(--ease); }
/* glowing top edge + soft spotlight that follows the cursor (set by JS) */
.solution::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, transparent, var(--accent), var(--cyan), transparent); opacity: .35; transition: opacity .35s; }
.solution::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .35s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), #5b8cff17, transparent 60%); }
.solution:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: 0 24px 60px -24px #000, 0 0 0 1px #5b8cff1a; }
.solution:hover::before, .solution:hover::after { opacity: 1; }
.solution:hover .icon-tile { transform: translateY(-2px) scale(1.05); box-shadow: 0 0 24px -4px #4fd1e866; }
.solution-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.solution h3 { font-size: clamp(21px, 2.4vw, 26px); }
.solution p { margin-top: 12px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chips li { padding: 6px 11px; border-radius: 8px; font-size: 13px; color: #c6d2e8; background: #ffffff08; border: 1px solid var(--line); transition: border-color .25s, color .25s; }
.solution:hover .chips li { border-color: #8fb3ff26; }

/* 8. Approach --------------------------------------------------------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; counter-reset: step; }
.steps::before { content: ""; position: absolute; top: 24px; left: 24px; right: 24px; height: 1px; background: linear-gradient(90deg, var(--accent), var(--cyan) 50%, #8fb3ff1f); opacity: .5; }
.step { position: relative; padding-right: 8px; }
.step-icon { position: relative; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: var(--cyan); background: var(--bg-2); border: 1px solid var(--border-strong); transition: transform .35s var(--ease), box-shadow .35s; }
.step:hover .step-icon { transform: translateY(-3px); box-shadow: 0 0 0 4px #5b8cff14, 0 0 22px -4px #4fd1e866; }
.step-num { display: block; margin: 22px 0 6px; font: 500 12px var(--mono); letter-spacing: .14em; color: var(--dim); }
.step h3 { font-size: 21px; }
.step p { margin-top: 8px; color: var(--muted); font-size: 15px; }

/* 9. Engagement ------------------------------------------------------- */
.models-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.model { display: flex; flex-direction: column; padding: clamp(24px, 3vw, 32px); transition: transform .35s var(--ease), border-color .35s, box-shadow .35s; }
.model:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: 0 24px 60px -24px #000; }
.model-head { display: flex; align-items: flex-start; justify-content: space-between; }
.model-num { font-size: 44px; font-weight: 700; line-height: .9; letter-spacing: -.04em; color: #ffffff0f; transition: color .35s; }
.model:hover .model-num { color: #5b8cff40; }
.model-icon { display: grid; place-items: center; width: 40px; height: 40px; margin-top: 18px; color: var(--accent-2); }
.model-icon .icon { width: 26px; height: 26px; }
.model h3 { margin-top: 10px; font-size: 23px; }
.model p { margin-top: 10px; color: var(--muted); }
.model .model-foot { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); font: 500 11.5px/1.5 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); }
.model p:not(.model-foot) { margin-bottom: 22px; }

/* 10. Contact --------------------------------------------------------- */
.section-contact { overflow: hidden; }
.section-contact::before { content: ""; position: absolute; left: 50%; top: 10%; width: 900px; height: 600px; margin-left: -450px; background: radial-gradient(closest-side, #2f5fd833, transparent); pointer-events: none; }
.contact-grid { position: relative; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.next-steps { display: grid; gap: 14px; margin-top: 32px; }
.next-steps li { display: flex; align-items: center; gap: 14px; color: #c6d2e8; }
.ns-num { display: grid; place-items: center; width: 28px; height: 28px; flex: none; border-radius: 8px; font: 500 12px var(--mono); color: var(--cyan); border: 1px solid #4fd1e840; background: #4fd1e810; }
.mail-link { display: inline-flex; align-items: center; gap: 14px; margin-top: 36px; padding: 12px 18px 12px 12px; border-radius: 14px; border: 1px solid var(--border); background: #0d1526b3; transition: border-color .25s, transform .25s var(--ease); }
.mail-link:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.mail-link small { display: block; font-size: 12px; color: var(--dim); }

.contact-form { display: grid; gap: 18px; padding: clamp(22px, 3.4vw, 36px); box-shadow: 0 30px 80px -30px #000c, 0 0 0 1px #5b8cff0d; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: grid; gap: 8px; align-content: start; }
.field label { font-size: 14px; font-weight: 500; color: #c6d2e8; }
.req { color: var(--cyan); }
.opt { color: var(--dim); font-weight: 400; }
.field input, .field select, .field textarea { width: 100%; padding: 12px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: #070c18; color: var(--ink); font-size: 15px;
  transition: border-color .2s, box-shadow .2s, background-color .2s; }
.field textarea { resize: vertical; min-height: 130px; }
.field select { appearance: none; padding-right: 40px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%238fb3ff' stroke-width='1.6' stroke-linecap='round'%3E%3Cpath d='m2 4 4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.field select option { background: var(--surface); }
.field ::placeholder { color: #5d6a80; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--border-strong); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px #5b8cff2e; background: #091022; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
.field-error { min-height: 0; font-size: 13px; color: var(--danger); }
.field-error:empty { display: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 4px; }
.form-note { font-size: 13px; color: var(--dim); }
.spinner { display: none; width: 18px; height: 18px; border-radius: 50%; border: 2px solid #ffffff55; border-top-color: #fff; animation: spin 0.8s linear infinite; }
.contact-form.is-sending .spinner { display: block; }
.contact-form.is-sending button[type="submit"] .icon { display: none; }
.contact-form.is-sending button[type="submit"] { pointer-events: none; opacity: .85; }
.form-status { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radius-sm); font-size: 14.5px; }
.form-status .icon { margin-top: 1px; }
.form-status.is-success { color: #c9f7df; background: #3ee08f14; border: 1px solid #3ee08f40; }
.form-status.is-error { color: #ffd1d6; background: #ff6b7a14; border: 1px solid #ff6b7a40; }

/* 11. Footer ---------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: #050812; }
.footer-inner { display: grid; grid-template-columns: 1.4fr auto auto; gap: 32px; align-items: center; padding-top: 40px; padding-bottom: 28px; }
.footer-brand p { margin-top: 12px; max-width: 360px; font-size: 14px; color: var(--dim); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 14px; color: var(--muted); }
.footer-nav a:hover, .footer-mail:hover, .to-top:hover { color: var(--ink); }
.footer-mail { font: 500 14px var(--mono); color: var(--accent-2); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 20px; padding-bottom: 28px; border-top: 1px solid var(--line); font-size: 13px; color: var(--dim); }

/* 12. Motion & reveal ------------------------------------------------- */
.js .reveal { opacity: 0; transform: translate3d(0, 18px, 0); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); will-change: opacity, transform; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@keyframes drift1 { to { transform: translate(12vmax, 9vmax) scale(1.1); } }
@keyframes drift2 { to { transform: translate(-10vmax, -7vmax) scale(1.06); } }
@keyframes drift3 { to { transform: translate(5vmax, -5vmax) scale(.9); } }
@keyframes beam { from { opacity: .55; } to { opacity: 1; } }
@keyframes breathe { 50% { transform: scale(1.15); opacity: .7; } }
@keyframes bracket { 50% { transform: scale(1.06); opacity: .6; } }
@keyframes float { 50% { transform: translateY(-6px); } }
@keyframes letter { to { opacity: 1; transform: none; } }
@keyframes shine { to { background-position: -600% 0; } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes sig { 50% { opacity: .3; } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes fade-in { to { opacity: 1; } }
@keyframes spin { to { transform: rotate(360deg); } }

/* 13. Responsive ------------------------------------------------------ */
@media (max-width: 1100px) { .readout { display: none; } }

@media (max-width: 960px) {
  /* steps become a vertical timeline: icon on the left, text on the right, joined by a line */
  .steps { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .steps::before { display: none; }
  .step { display: grid; grid-template-columns: 48px minmax(0, 1fr); column-gap: 18px; padding: 0 0 32px; }
  .step > :not(.step-icon) { grid-column: 2; }
  .step-icon { grid-row: 1 / span 3; z-index: 1; }
  .step-num { margin: 2px 0 2px; }
  .step::after { content: ""; position: absolute; left: 24px; top: 56px; bottom: 8px; width: 1px; background: linear-gradient(180deg, var(--accent), var(--cyan)); opacity: .5; }
  .step:last-child { padding-bottom: 0; }
  .step:last-child::after { bottom: auto; height: 48px; background: linear-gradient(180deg, var(--cyan), transparent); }
  .models-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .menu-toggle { display: grid; }
  .header-cta { display: none; }
  .nav { position: fixed; inset: var(--header-h) 0 auto; flex-direction: column; gap: 2px; margin: 0; padding: 12px var(--gutter) 20px; background: #060a14f2; border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .25s, transform .25s var(--ease), visibility .25s; }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav a { padding: 14px 12px; font-size: 16px; }
  .nav a.is-active::after { display: none; }
  .header-actions { margin-left: auto; }
  .site-header.menu-open { background: #060a14f2; }
  .solutions-grid { grid-template-columns: minmax(0, 1fr); }
  .section-head-row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .beams, .orbit.two { display: none; }
  .grid { background-size: 44px 44px; }
  .brand span { display: none; }
  .eyebrow { font-size: 10.5px; letter-spacing: .1em; }
  .brackets { inset: -28px; }
  .hero-actions .btn { width: 100%; }
  .field-row { grid-template-columns: minmax(0, 1fr); }
  .form-foot .btn { width: 100%; }
}

@media (max-height: 760px) and (min-width: 561px) {
  .mark-wrap { width: 72px; height: 72px; margin-bottom: 28px; } .mark { width: 72px; height: 72px; border-radius: 17px; } .brackets { inset: -26px -48px; }
  .hero-title { font-size: clamp(44px, 7.5vw, 84px); } .hero-actions { margin-top: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal, .hero-title .ch, .readout { opacity: 1; transform: none; filter: none; }
  .readout { transform: translateY(-50%); }
}