:root {
  --bg: #05061a;
  --bg-2: #0a0b2a;
  --panel: #0f1b3a;
  --panel-2: #121044;
  --text: #ffffff;
  --text-soft: #d6d9f2;
  --text-mute: #8e93b8;
  --line: rgba(140, 150, 255, 0.14);
  --purple: #7c3aed;
  --purple-2: #6d3cf5;
  --violet: #a855f7;
  --peach: #f5c6a5;
  --radius: 22px;
  --font-body: "Nunito", system-ui, sans-serif;
  --font-hero: "Montserrat", system-ui, sans-serif;
  --font-display: "Baloo 2", "Nunito", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --gutter: clamp(16px, 6vw, 110px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ---------- Background ---------- */
#bg {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: -3;
}
.aurora { position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; }
.aurora span {
  position: absolute; border-radius: 50%;
  filter: blur(90px); opacity: .32; mix-blend-mode: screen;
  animation: drift 22s ease-in-out infinite alternate;
}
.aurora span:nth-child(1) { width: 46vw; height: 46vw; left: -10vw; top: 25vh; background: #5b21b6; }
.aurora span:nth-child(2) { width: 38vw; height: 38vw; right: -8vw; top: 60vh; background: #1d4ed8; animation-duration: 28s; animation-delay: -6s; opacity: .22; }
.aurora span:nth-child(3) { width: 30vw; height: 30vw; left: 40vw; top: -12vh; background: #9333ea; animation-duration: 18s; animation-delay: -3s; opacity: .2; }
@keyframes drift {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(6vw, -5vh) scale(1.15); }
  100% { transform: translate(-4vw, 6vh) scale(.95); }
}
.cursor-glow {
  position: fixed; left: 0; top: 0; z-index: -1;
  width: 340px; height: 340px; margin: -170px 0 0 -170px;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(139, 92, 246, .28), rgba(139, 92, 246, 0) 65%);
  transition: opacity .4s;
  will-change: transform;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gutter);
  transition: background .35s, padding .35s, backdrop-filter .35s;
}
.nav.scrolled {
  background: rgba(5, 6, 26, .6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-top: 12px; padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.nav__logo img { height: clamp(40px, 5vw, 62px); width: auto; transition: height .35s; }
.nav.scrolled .nav__logo img { height: 44px; }
.nav__links { position: relative; display: flex; gap: clamp(24px, 5vw, 72px); }
.nav__links a {
  font-size: 18px; color: var(--text-soft); padding: 6px 2px;
  transition: color .25s;
}
.nav__links a:hover, .nav__links a.active { color: #fff; }
.nav__indicator {
  position: absolute; bottom: -4px; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--purple-2), var(--peach));
  box-shadow: 0 0 12px rgba(168, 85, 247, .8);
  transition: left .45s cubic-bezier(.6, .1, .2, 1), width .45s cubic-bezier(.6, .1, .2, 1);
}
.nav__toggle { display: none; width: 44px; height: 44px; position: relative; }
.nav__toggle span {
  position: absolute; left: 10px; right: 10px; height: 2px; background: #fff; border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav__toggle span:nth-child(1) { top: 14px; }
.nav__toggle span:nth-child(2) { top: 21px; }
.nav__toggle span:nth-child(3) { top: 28px; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 18px;
  height: 64px; padding: 0 40px; border-radius: 999px;
  font-size: 19px; font-weight: 600; position: relative; overflow: hidden;
  transition: transform .25s, box-shadow .25s, background .25s;
}
.btn--primary {
  background: linear-gradient(135deg, #6d3cf5, #7c3aed 60%, #8b5cf6);
  box-shadow: 0 10px 30px -8px rgba(109, 60, 245, .7);
}
.btn--primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  transform: translateX(-120%);
  animation: shimmer 3.6s ease-in-out infinite;
}
@keyframes shimmer { 0%, 60% { transform: translateX(-120%); } 100% { transform: translateX(120%); } }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -8px rgba(124, 58, 237, .9); }
.btn--primary svg { transition: transform .25s; }
.btn--primary:hover svg { transform: translateX(4px); }
.btn--ghost {
  background: rgba(20, 30, 60, .6); border: 1px solid rgba(120, 140, 220, .25);
  backdrop-filter: blur(8px);
  gap: 14px; padding: 0 36px;
}
.btn--ghost:hover { transform: translateY(-3px); border-color: rgba(168, 85, 247, .6); }
.btn__play {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: #6d3cf5; position: relative;
}
.btn__play::before {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  border: 2px solid rgba(139, 92, 246, .6);
  animation: ping 2s ease-out infinite;
}
@keyframes ping { 0% { transform: scale(.8); opacity: 1; } 100% { transform: scale(1.6); opacity: 0; } }
.btn--block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  padding: clamp(130px, 18vh, 200px) var(--gutter) 40px;
  text-align: center;
}
.hero__title {
  font-family: var(--font-hero); font-weight: 800;
  font-size: clamp(40px, 7vw, 100px); line-height: 1.05; letter-spacing: -.01em;
}
.hero__powering {
  font-family: var(--font-hero); font-weight: 700;
  font-size: clamp(30px, 5vw, 76px); line-height: 1.25;
  display: flex; justify-content: center; align-items: baseline; flex-wrap: wrap; gap: 0 .35em;
}
.hero__rotator { display: inline-block; position: relative; min-width: 4ch; text-align: left; }
.hero__word {
  display: inline-block;
  background: linear-gradient(90deg, var(--c1, #7c3aed), var(--c2, #f5c6a5));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 22px color-mix(in srgb, var(--c1, #7c3aed) 45%, transparent));
  transition: transform .5s cubic-bezier(.2,.8,.2,1), opacity .5s, filter .5s;
}
.hero__word.out { transform: translateY(-40%) rotateX(70deg); opacity: 0; filter: blur(6px); }
.hero__word.in { transform: translateY(40%) rotateX(-70deg); opacity: 0; filter: blur(6px); transition: none; }
.hero__sub {
  margin-top: clamp(24px, 4vh, 48px);
  font-size: clamp(17px, 2vw, 32px); color: var(--text-soft); line-height: 1.6;
}
.hero__sub b { color: #fff; text-shadow: 0 0 24px rgba(168, 85, 247, .9); }
.hero__cta { margin-top: clamp(28px, 5vh, 56px); display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; }

.reveal-word { display: inline-block; opacity: 0; transform: translateY(40px); filter: blur(8px); animation: wordIn .9s cubic-bezier(.2,.8,.2,1) forwards; }
.hero__title .reveal-word:nth-child(2) { animation-delay: .12s; }
.hero__powering .reveal-word { animation-delay: .28s; }
@keyframes wordIn { to { opacity: 1; transform: none; filter: none; } }

/* ---------- Infinity ---------- */
.infinity {
  position: relative;
  max-width: 1400px; margin: clamp(30px, 6vh, 80px) auto 0;
  perspective: 1400px;
}
.infinity__halo {
  position: absolute; left: -4%; right: -4%; top: -6%; bottom: -10%;
  border-radius: 50%;
  background:
    radial-gradient(ellipse at center, rgba(76, 29, 149, .35), rgba(20, 10, 60, .25) 45%, transparent 70%);
  animation: haloBreath 6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes haloBreath { 0%,100% { opacity: .75; transform: scale(1); } 50% { opacity: 1; transform: scale(1.04); } }
.infinity__stage {
  position: relative;
  aspect-ratio: 1240 / 600;
  transform-style: preserve-3d;
  transition: transform .6s cubic-bezier(.2,.8,.2,1);
  container-type: inline-size;
}
.infinity__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }

.guides line { stroke: rgba(139, 120, 255, .22); stroke-width: 1.2; stroke-dasharray: 3 9; }
.orbit circle { fill: none; stroke: rgba(139, 120, 255, .14); stroke-width: 1.2; stroke-dasharray: 2 10; }
.orbit { transform-box: fill-box; transform-origin: center; animation: spin 60s linear infinite; }
.orbit--r { animation-direction: reverse; }
@keyframes spin { to { transform: rotate(360deg); } }
.guide-dot { fill: #c4b5fd; animation: twinkle 3s ease-in-out infinite; }
.guide-dot:nth-of-type(2n) { animation-delay: -1.5s; }
@keyframes twinkle { 0%,100% { opacity: .25; } 50% { opacity: 1; } }

.tube path { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.tube__aura { stroke: #7c3aed; stroke-width: 150; opacity: .38; filter: url(#blurBig); animation: auraPulse 4s ease-in-out infinite; }
@keyframes auraPulse { 0%,100% { opacity: .3; } 50% { opacity: .55; } }
.tube__glow { stroke: #a78bfa; stroke-width: 96; opacity: .45; filter: url(#blurMid); }
.tube__body { stroke: url(#tubeGrad); stroke-width: 72; opacity: .92; }
.tube__shine { stroke: rgba(255, 255, 255, .55); stroke-width: 14; opacity: .35; filter: url(#blurMid); }
.tube__sweep { stroke: url(#sweepGrad); stroke-width: 64; opacity: .55; filter: url(#blurMid); mix-blend-mode: screen; }
.tube__flow { stroke: #fff; stroke-width: 3; stroke-dasharray: 2 26; opacity: .75; filter: url(#glow); }
.tube__flow--rev { stroke: #e9d5ff; stroke-width: 2; stroke-dasharray: 1 40; opacity: .5; }

.connector { fill: none; stroke-width: 2.2; opacity: .85; stroke-dasharray: 220; stroke-dashoffset: 220; transition: stroke-dashoffset 1s ease; }
.connector.drawn { stroke-dashoffset: 0; }
.connector-dot { transition: r .3s; }
.comet { mix-blend-mode: screen; }

/* centre logo */
.infinity__center {
  position: absolute; left: 50%; top: 50%;
  width: 21%; aspect-ratio: 2.9 / 1;
  transform: translate(-50%, -50%) translateZ(40px);
  display: grid; place-items: center;
  z-index: 3;
}
.infinity__center img {
  width: 100%; height: auto; position: relative; z-index: 2;
  filter: drop-shadow(0 0 2px #fff) drop-shadow(0 0 4px #fff) drop-shadow(0 0 3px #fff) drop-shadow(0 0 18px rgba(196, 181, 253, .95)) drop-shadow(0 0 40px rgba(139, 92, 246, .8));
  animation: logoFloat 5s ease-in-out infinite;
}
@keyframes logoFloat { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }
.infinity__ripple {
  position: absolute; inset: 10%; border-radius: 999px;
  border: 2px solid rgba(196, 181, 253, .6);
  animation: ripple 3.2s ease-out infinite;
}
.infinity__ripple + .infinity__ripple { animation-delay: 1.6s; }
@keyframes ripple { 0% { transform: scale(.9); opacity: .9; } 100% { transform: scale(1.8); opacity: 0; } }

/* nodes */
.node {
  position: absolute; width: 9.6%; aspect-ratio: 1;
  transform: translate(-50%, -50%) translateZ(30px) scale(0);
  z-index: 4; cursor: pointer;
  --c: #a855f7;
  transition: transform .6s cubic-bezier(.34, 1.56, .64, 1);
}
.node.shown { transform: translate(-50%, -50%) translateZ(30px) scale(1); }
.node__bob { position: absolute; inset: 0; animation: bob 4s ease-in-out infinite; animation-delay: var(--d, 0s); }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6%); } }
.node__core {
  position: absolute; inset: 0; border-radius: 50%;
  display: grid; place-items: center;
  background:
    radial-gradient(circle at 35% 28%, color-mix(in srgb, var(--c) 35%, #fff) 0%, var(--c) 45%, color-mix(in srgb, var(--c) 70%, #000) 100%);
  border: 3px solid color-mix(in srgb, var(--c) 40%, #fff);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--c) 25%, transparent),
    0 0 24px 4px color-mix(in srgb, var(--c) 80%, transparent),
    0 0 60px 10px color-mix(in srgb, var(--c) 45%, transparent),
    inset 0 -8px 18px rgba(0,0,0,.25);
  transition: transform .35s cubic-bezier(.34,1.56,.64,1), box-shadow .35s;
}
.node__core svg { width: 46%; height: 46%; stroke: #fff; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 2px 3px rgba(0,0,0,.25)); }
.node__ring {
  position: absolute; inset: -6%; border-radius: 50%;
  border: 2px solid var(--c); opacity: 0;
}
.node:hover .node__core, .node.active .node__core {
  transform: scale(1.14);
  box-shadow:
    0 0 0 6px color-mix(in srgb, var(--c) 35%, transparent),
    0 0 34px 8px var(--c),
    0 0 90px 24px color-mix(in srgb, var(--c) 55%, transparent),
    inset 0 -8px 18px rgba(0,0,0,.2);
}
.node.active .node__ring { animation: nodeRing 1.6s ease-out infinite; }
.node.active .node__ring + .node__ring { animation-delay: .8s; }
@keyframes nodeRing { 0% { transform: scale(1); opacity: .9; } 100% { transform: scale(1.9); opacity: 0; } }

.node-label {
  position: absolute; z-index: 4;
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(11px, 2.6cqw, 34px);
  color: var(--c);
  text-shadow: 0 0 18px color-mix(in srgb, var(--c) 70%, transparent);
  white-space: nowrap; pointer-events: none;
  opacity: 0; transition: opacity .6s, transform .6s, letter-spacing .4s;
}
.node-label.left { transform: translate(calc(-100% - 1.2cqw), -50%); }
.node-label.right { transform: translate(1.2cqw, -50%); }
.node-label.shown { opacity: 1; }
.node-label.active { letter-spacing: .04em; filter: brightness(1.25); }

.node-tip {
  position: absolute; z-index: 10; pointer-events: none;
  max-width: 260px; padding: 12px 16px; border-radius: 14px;
  background: rgba(12, 14, 40, .9); border: 1px solid rgba(168, 85, 247, .4);
  backdrop-filter: blur(10px);
  font-size: 14px; line-height: 1.5; color: var(--text-soft); text-align: left;
  opacity: 0; transform: translate(-50%, calc(-100% - 10px)) scale(.95);
  transition: opacity .25s, transform .25s;
}
.node-tip b { display: block; font-family: var(--font-display); font-size: 17px; color: #fff; margin-bottom: 2px; }
.node-tip.show { opacity: 1; transform: translate(-50%, calc(-100% - 16px)) scale(1); }

main { overflow-x: clip; }
.infinity__legend {
  display: none; flex-wrap: wrap; justify-content: center; gap: 8px 10px;
  position: relative; margin-top: 18px; padding: 0 8px;
}
.infinity__legend button {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 700;
  color: var(--c); background: rgba(15, 18, 50, .7);
  border: 1px solid color-mix(in srgb, var(--c) 40%, transparent);
  transition: background .3s, box-shadow .3s;
}
.infinity__legend button::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px var(--c); }
.infinity__legend button.active { background: color-mix(in srgb, var(--c) 22%, transparent); box-shadow: 0 0 16px color-mix(in srgb, var(--c) 50%, transparent); }

/* ---------- Sections ---------- */
section { position: relative; }
.features, .pricing, .contact { padding: clamp(110px, 16vh, 180px) var(--gutter) 60px; }
.section-head { max-width: 1080px; }
.display {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(38px, 5.4vw, 84px); line-height: 1.08;
}
.accent {
  background: linear-gradient(90deg, #7c3aed, #a78bfa 60%, #8b5cf6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { margin-top: 26px; font-size: clamp(17px, 1.9vw, 30px); color: var(--text-soft); line-height: 1.5; max-width: 1040px; }

.reveal { opacity: 0; transform: translateY(40px); transition: opacity 1s cubic-bezier(.2,.8,.2,1), transform 1s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.hero .reveal { transition-delay: .45s; }
.hero .hero__cta.reveal { transition-delay: .6s; }

/* ---------- Features ---------- */
.features__body {
  margin-top: clamp(60px, 10vh, 130px);
  display: grid; grid-template-columns: minmax(260px, 420px) 1fr; gap: clamp(30px, 4vw, 70px);
  align-items: start;
}
.features__list { list-style: none; position: relative; padding-left: 44px; }
.features__list::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; border-radius: 6px;
  background: #121a3d;
}
.feat-item { position: relative; padding: 18px 0; cursor: pointer; }
.feat-item__bar {
  position: absolute; left: -44px; top: 0; bottom: 0; width: 6px; border-radius: 6px;
  overflow: hidden; opacity: 0; transition: opacity .3s;
}
.feat-item__bar::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: var(--p, 0%);
  background: linear-gradient(#a78bfa, #6d3cf5);
  box-shadow: 0 0 14px #7c3aed;
}
.feat-item.active .feat-item__bar { opacity: 1; background: rgba(109, 60, 245, .25); }
.feat-item__head { display: flex; gap: clamp(20px, 3vw, 56px); align-items: baseline; }
.feat-item__num { font-family: var(--font-mono); font-size: clamp(18px, 1.6vw, 26px); color: var(--text-soft); }
.feat-item__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(22px, 2vw, 32px); color: var(--text-soft);
  transition: color .3s, transform .3s, text-shadow .3s;
}
.feat-item:hover .feat-item__title { color: #fff; transform: translateX(6px); }
.feat-item.active .feat-item__title { color: #fff; text-shadow: 0 0 20px color-mix(in srgb, var(--c) 70%, transparent); }
.feat-item__sub {
  display: grid; grid-template-rows: 0fr; transition: grid-template-rows .5s ease, opacity .5s;
  opacity: 0; padding-left: calc(clamp(18px, 1.6vw, 26px) * 1.8 + clamp(20px, 3vw, 56px));
}
.feat-item__sub > span { overflow: hidden; font-size: clamp(16px, 1.5vw, 24px); color: var(--text-soft); line-height: 1.45; }
.feat-item.active .feat-item__sub { grid-template-rows: 1fr; opacity: 1; }
.feat-item.active .feat-item__sub > span { padding-top: 22px; }

.feature-card {
  position: sticky; top: 110px;
  border-radius: var(--radius);
  background: linear-gradient(160deg, #13284d 0%, #0f1c3d 55%, #14103f 100%);
  border: 1px solid rgba(110, 140, 230, .22);
  padding: clamp(14px, 1.6vw, 26px);
  box-shadow: 0 30px 80px -30px rgba(76, 29, 149, .6);
  overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: conic-gradient(from var(--ang, 0deg), transparent 0 70%, var(--c, #a855f7) 85%, transparent 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  animation: borderSpin 6s linear infinite;
  pointer-events: none;
}
@property --ang { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
@keyframes borderSpin { to { --ang: 360deg; } }
.feature-card__screen {
  position: relative; border-radius: 18px; overflow: hidden; background: #f4f6fb;
  aspect-ratio: 1600 / 887;
}
.feature-card__screen img {
  width: 100%; height: 100%; object-fit: cover; transform: scale(1.012);
  transition: opacity .45s ease, transform .9s cubic-bezier(.2,.8,.2,1), filter .45s;
}
.feature-card__screen img.swap { opacity: 0; transform: scale(1.06); filter: blur(6px); }
.feature-card__scan {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 0%, rgba(139, 92, 246, .18) 48%, rgba(255,255,255,.4) 50%, transparent 52%);
  background-size: 100% 300%; background-position: 0 -100%;
}
.feature-card__scan.run { animation: scan 1s ease-out; }
@keyframes scan { from { background-position: 0 -100%; } to { background-position: 0 200%; } }
.feature-card__info { padding: clamp(24px, 3vw, 48px) clamp(10px, 2.5vw, 44px) clamp(20px, 3vw, 50px); }
.feature-card__info h3 { font-family: var(--font-display); font-weight: 800; font-size: clamp(26px, 2.2vw, 36px); }
.feature-card__line { display: block; width: 96px; height: 3px; border-radius: 3px; margin: 14px 0 26px; background: linear-gradient(90deg, #7c3aed, var(--peach)); }
.feature-card__info p { font-family: var(--font-mono); font-size: clamp(14px, 1.3vw, 21px); line-height: 1.6; color: var(--text-soft); min-height: 4.8em; }
.fade-swap { animation: fadeUp .5s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- Pricing ---------- */
.toggle {
  position: relative; display: flex; width: max-content; margin: clamp(50px, 8vh, 100px) auto 0;
  background: linear-gradient(90deg, #0c1838, #142449); border: 1px solid rgba(120, 140, 220, .25);
  border-radius: 999px; padding: 6px;
}
.toggle button { position: relative; z-index: 1; padding: 14px 36px; font-size: 20px; color: var(--text-soft); border-radius: 999px; transition: color .3s; }
.toggle button.active { color: #6d3cf5; }
.toggle__pill {
  position: absolute; top: 6px; bottom: 6px; border-radius: 999px; background: #f4f5ff;
  box-shadow: 0 0 24px rgba(168, 85, 247, .5);
  transition: left .45s cubic-bezier(.6,.1,.2,1), width .45s cubic-bezier(.6,.1,.2,1);
}
.plans {
  position: relative; margin: clamp(50px, 7vh, 80px) auto 0; max-width: 1240px;
  display: flex; align-items: center; justify-content: center; gap: 16px;
}
.plans__track { position: relative; flex: 1; height: 760px; }
.plan {
  position: absolute; top: 0; left: 50%;
  width: min(330px, 30%);
  padding: 40px 28px 36px; text-align: center;
  background: #171717; border-top: 4px solid #1b2547;
  transition: transform .7s cubic-bezier(.6,.1,.2,1), opacity .7s, background .5s, width .7s, box-shadow .5s, filter .5s;
}
.plan { transform: translateX(-50%); transition: left .7s cubic-bezier(.6,.1,.2,1), transform .7s cubic-bezier(.6,.1,.2,1), opacity .7s, background .5s, width .7s, box-shadow .5s, filter .5s; }
.plan[data-pos="0"] { left: 50%; width: min(460px, 40%); background: #0f0a3a; border-top-color: #6d3cf5; z-index: 3; box-shadow: 0 30px 80px -20px rgba(109, 60, 245, .55); }
.plan[data-pos="-1"] { left: 17%; z-index: 2; }
.plan[data-pos="1"] { left: 83%; z-index: 2; }
.plan[data-pos="-1"], .plan[data-pos="1"] { filter: saturate(.85); }
.plan[data-pos="hidden"] { opacity: 0; transform: translateX(-50%) scale(.8); pointer-events: none; }
.plan__name { font-family: var(--font-display); font-weight: 800; font-size: 38px; line-height: 1.1; }
.plan[data-pos="0"] .plan__name { font-size: 58px; }
.plan__users { color: var(--text-soft); font-size: 17px; margin-top: 4px; }
.plan[data-pos="0"] .plan__users { font-size: 24px; }
.plan__old { margin-top: 26px; height: 22px; color: var(--text-mute); text-decoration: line-through; font-size: 17px; }
.plan__price { font-family: var(--font-display); font-weight: 800; font-size: 36px; line-height: 1.2; }
.plan[data-pos="0"] .plan__price { font-size: 56px; }
.plan__per { color: var(--text-soft); font-size: 16px; }
.plan[data-pos="0"] .plan__per { font-size: 22px; margin-top: 8px; }
.plan__badge {
  display: inline-block; margin-top: 10px; padding: 4px 12px; border-radius: 999px;
  background: rgba(245, 198, 165, .15); color: var(--peach); font-size: 14px; font-weight: 700;
  opacity: 0; transform: scale(.8); transition: opacity .4s, transform .4s;
}
.pricing.special .plan__badge { opacity: 1; transform: none; }
.plan__btn {
  display: inline-flex; margin: 26px 0 30px; padding: 10px 48px; border-radius: 999px;
  background: #e8e1fb; color: #6d3cf5; font-weight: 700; font-size: 17px;
  transition: transform .25s, background .25s, color .25s, box-shadow .25s;
}
.plan__btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px -6px rgba(168,85,247,.7); }
.plan[data-pos="0"] .plan__btn { background: #6d3cf5; color: #fff; font-size: 24px; padding: 14px 72px; margin: 40px 0 40px; }
.plan__list { list-style: none; text-align: left; display: grid; gap: 14px; }
.plan[data-pos="0"] .plan__list { gap: 16px; padding-left: 10px; }
.plan__list li { display: flex; align-items: center; gap: 14px; color: var(--text-soft); font-size: 16px; }
.plan[data-pos="0"] .plan__list li { font-size: 21px; }
.plan__list svg { flex: none; width: 26px; height: 26px; }
.plan[data-pos="0"] .plan__list svg { width: 34px; height: 34px; }
.price-flip { display: inline-block; animation: flip .5s ease; }
@keyframes flip { 0% { transform: rotateX(90deg); opacity: 0; } 100% { transform: none; opacity: 1; } }
.plans__arrow {
  flex: none; width: 58px; height: 58px; border-radius: 50%;
  display: grid; place-items: center; background: #6d3cf5; color: #0b0b1e;
  box-shadow: 0 0 0 4px rgba(0,0,0,.4), 0 8px 24px -4px rgba(109,60,245,.7);
  transition: transform .25s, box-shadow .25s;
  z-index: 5;
}
.plans__arrow:hover { transform: scale(1.1); box-shadow: 0 0 0 4px rgba(0,0,0,.4), 0 0 30px rgba(168,85,247,.9); }

/* ---------- Contact ---------- */
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 90px); align-items: start; }
.contact__points { list-style: none; margin-top: 34px; display: grid; gap: 14px; }
.contact__points li { display: flex; align-items: center; gap: 14px; font-size: 19px; color: var(--text-soft); }
.contact__points li::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: #a855f7; box-shadow: 0 0 12px #a855f7; }
.contact__form {
  padding: clamp(24px, 3vw, 44px); border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(19, 40, 77, .8), rgba(20, 16, 63, .8));
  border: 1px solid rgba(110, 140, 230, .22);
  backdrop-filter: blur(10px);
  display: grid; gap: 18px;
}
.field { display: grid; gap: 8px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field label { font-size: 15px; font-weight: 700; color: var(--text-soft); }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 16px; color: #fff;
  background: rgba(5, 6, 26, .55); border: 1px solid rgba(120, 140, 220, .25);
  border-radius: 14px; padding: 14px 16px; outline: none; resize: vertical;
  transition: border-color .25s, box-shadow .25s;
}
.field input:focus, .field textarea:focus { border-color: #8b5cf6; box-shadow: 0 0 0 4px rgba(139, 92, 246, .2); }
.field.invalid input { border-color: #f472b6; }
.form-status { min-height: 1.4em; font-size: 15px; text-align: center; }
.form-status.ok { color: #86efac; }
.form-status.err { color: #f9a8d4; }

/* ---------- Footer ---------- */
.footer {
  padding: 50px var(--gutter); margin-top: 60px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  color: var(--text-mute); font-size: 15px;
}
.footer img { height: 40px; width: auto; }
.footer nav { display: flex; gap: 28px; }
.footer a:hover { color: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .features__body { grid-template-columns: 1fr; }
  .feature-card { position: relative; top: 0; order: -1; }
  .features__list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; padding-left: 0; }
  .features__list::before { display: none; }
  .feat-item { padding: 14px 16px; border-radius: 14px; }
  .feat-item.active { background: rgba(109, 60, 245, .14); }
  .feat-item__bar { left: 0; top: auto; bottom: 0; right: 0; width: auto; height: 3px; }
  .feat-item__bar::after { height: 100%; width: var(--p, 0%); right: auto; }
  .feat-item__sub { display: none; }
  .contact__grid { grid-template-columns: 1fr; }
  .plans__track { height: 780px; }
  .plan { width: min(420px, 100%); }
  .plan[data-pos="0"] { width: min(440px, 100%); }
  .plan[data-pos="-1"], .plan[data-pos="1"] { opacity: 0; pointer-events: none; transform: translateX(-50%) scale(.85); }
}
@media (max-width: 760px) {
  .nav__toggle { display: block; z-index: 2; }
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; align-items: center; justify-content: center; gap: 30px;
    background: rgba(5, 6, 26, .96); backdrop-filter: blur(16px);
    opacity: 0; pointer-events: none; transition: opacity .35s;
  }
  .nav__links.open { opacity: 1; pointer-events: auto; }
  .nav__links a { font-size: 26px; }
  .nav__indicator { display: none; }
  .btn { height: 54px; padding: 0 26px; font-size: 17px; }
  .infinity { margin-left: -8px; margin-right: -8px; }
  .node-label, #connectors { display: none; }
  .node { width: 12%; }
  .infinity__legend { display: flex; }
  .node__core { border-width: 2px; }
  .field-row { grid-template-columns: 1fr; }
  .toggle button { padding: 12px 22px; font-size: 17px; }
  .plans { gap: 6px; }
  .plans__arrow { width: 44px; height: 44px; position: absolute; top: 300px; }
  .plans__arrow--prev { left: -6px; }
  .plans__arrow--next { right: -6px; }
  .plan[data-pos="0"] { padding: 34px 20px; }
  .plan[data-pos="0"] .plan__name { font-size: 44px; }
  .plan[data-pos="0"] .plan__price { font-size: 40px; }
  .plan[data-pos="0"] .plan__btn { font-size: 19px; padding: 12px 48px; }
  .plan[data-pos="0"] .plan__list li { font-size: 18px; }
  .plan[data-pos="0"] .plan__list svg { width: 30px; height: 30px; }
  .plans__track { height: 700px; }
  .features__list { grid-template-columns: 1fr; }
  .cursor-glow { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}