:root {
  --font-ui: "Manrope", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

  --bg: #000000;
  --bg-soft: #07080c;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --text: #f5f7fb;
  --text-muted: #9ea6b3;
  --border: rgba(255, 255, 255, 0.1);
  --accent: #cdd9ef;
  --accent-soft: #8ea9d6;

  --fs-12: 12px;
  --fs-14: 14px;
  --fs-16: 16px;
  --fs-20: 20px;
  --fs-h1: clamp(34px, 6.2vw, 76px);
  --fs-h2: clamp(26px, 3.2vw, 44px);

  --sp-1: 8px;
  --sp-2: 12px;
  --sp-3: 16px;
  --sp-4: 24px;
  --sp-5: 32px;
  --sp-6: 48px;
  --sp-7: 72px;
  --sp-8: 96px;
  --sp-9: 120px;

  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 24px;
  --r-xl: 32px;

  --shadow-sm: 0 8px 26px rgba(0, 0, 0, 0.38);
  --shadow-md: 0 30px 80px rgba(0, 0, 0, 0.58);

  --dur-fast: 160ms;
  --dur-base: 280ms;
  --dur-slow: 560ms;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-smooth: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  color: var(--text);
  background: var(--bg);
  line-height: 1.58;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p,
ol {
  margin: 0;
}

.bg-flow,
.bg-noise,
.bg-code-bursts,
.cursor-halo {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.bg-flow {
  background:
    radial-gradient(52vw 34vw at 14% -8%, rgba(149, 177, 228, 0.24), transparent 72%),
    radial-gradient(36vw 24vw at 90% 10%, rgba(122, 160, 229, 0.18), transparent 75%),
    radial-gradient(28vw 20vw at 88% 44%, rgba(178, 154, 233, 0.12), transparent 74%),
    radial-gradient(28vw 18vw at 82% 72%, rgba(142, 172, 255, 0.14), transparent 74%),
    radial-gradient(24vw 16vw at 22% 26%, rgba(111, 205, 224, 0.1), transparent 76%),
    radial-gradient(34vw 22vw at 10% 84%, rgba(110, 146, 220, 0.12), transparent 76%),
    radial-gradient(60vw 38vw at 50% 120%, rgba(113, 135, 171, 0.11), transparent 76%);
  z-index: 0;
}

.bg-noise {
  z-index: 1;
  opacity: 0.12;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 0.55px, transparent 0.55px);
  background-size: 3px 3px;
}

.bg-code-bursts {
  z-index: 2;
  overflow: hidden;
}

.code-burst {
  position: absolute;
  color: rgba(167, 192, 240, 0.28);
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
  letter-spacing: 0.02em;
  width: 0;
  overflow: hidden;
  border-right: 1px solid rgba(165, 189, 235, 0.46);
  opacity: 0;
  animation: burst-type var(--type-dur) steps(var(--chars), end) forwards,
    burst-fade var(--fade-dur) var(--ease-out) forwards;
}

.code-burst.fx-glitch {
  animation: burst-glitch-in 280ms var(--ease-out) forwards, burst-fade var(--fade-dur) var(--ease-out) forwards;
  width: auto;
  border-right: 0;
}

.code-burst.fx-slide {
  animation: burst-slide-in 540ms var(--ease-out) forwards, burst-fade var(--fade-dur) var(--ease-out) forwards;
  width: auto;
  border-right: 0;
}

@keyframes burst-type {
  0% {
    width: 0;
    opacity: 0.15;
  }
  12% {
    opacity: 0.8;
  }
  100% {
    width: calc(var(--chars) * 0.64ch);
    opacity: 0.95;
  }
}

@keyframes burst-glitch-in {
  0% {
    opacity: 0;
    transform: translateX(-8px) skewX(6deg);
    filter: blur(1px);
  }
  35% {
    opacity: 0.9;
    transform: translateX(2px) skewX(-3deg);
    filter: blur(0);
  }
  100% {
    opacity: 0.95;
    transform: translateX(0) skewX(0);
    filter: blur(0);
  }
}

@keyframes burst-slide-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 0.9;
    transform: translateY(0);
  }
}

@keyframes burst-fade {
  0% {
    transform: translateY(0);
  }
  60% {
    opacity: 0.55;
  }
  100% {
    opacity: 0;
    transform: translateY(-18px);
  }
}

.cursor-halo {
  width: 460px;
  height: 460px;
  top: 0;
  left: 0;
  border-radius: 55% 45% 58% 42% / 48% 62% 38% 52%;
  background: radial-gradient(circle at 34% 36%, rgba(148, 176, 224, 0.26), rgba(55, 75, 110, 0.02) 74%);
  filter: blur(36px);
  mix-blend-mode: screen;
  opacity: 0.46;
  transform: translate3d(calc(var(--mx, 50vw) - 50%), calc(var(--my, 45vh) - 50%), 0);
  transition: transform 460ms var(--ease-out);
  z-index: 3;
}

.site-header,
main,
.site-footer {
  position: relative;
}

.site-header {
  z-index: 30;
}

main,
.site-footer {
  z-index: 4;
}

.container {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

.section {
  padding: var(--sp-8) 0;
}

.site-header {
  position: sticky;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.42));
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-weight: 700;
}

.brand-mark {
  width: 148px;
  height: 38px;
  border-radius: 0;
  display: grid;
  place-items: center;
  background: transparent;
  box-shadow: none;
  filter: drop-shadow(0 0 10px rgba(108, 141, 255, 0.16)) drop-shadow(0 0 24px rgba(110, 153, 255, 0.1));
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transform: translateX(0) translateY(0);
  opacity: 0.92;
}

.header-nav {
  display: inline-flex;
  gap: var(--sp-3);
}

.header-nav a {
  color: var(--text-muted);
  font-size: var(--fs-14);
  transition: color var(--dur-fast) var(--ease-smooth);
}

.header-nav a:hover {
  color: var(--text);
}

.header-actions {
  position: relative;
}

.qr-pop {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: 190px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out),
    visibility var(--dur-base) var(--ease-out);
}

.qr-pop.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.qr-pop img {
  width: 100%;
  border-radius: 10px;
  display: block;
}

.qr-pop p {
  margin-top: 8px;
  text-align: center;
  font-size: var(--fs-12);
  color: var(--text-muted);
}

.hero {
  padding-top: var(--sp-9);
  position: relative;
  overflow: hidden;
}

.hero-code {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.28;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, #000 18%, #000 70%, rgba(0, 0, 0, 0) 100%);
}

.code-column {
  position: absolute;
  top: -180%;
  width: clamp(130px, 10vw, 180px);
  color: rgba(188, 208, 243, 0.34);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre;
  animation: code-fall var(--dur) linear infinite;
  animation-delay: var(--delay);
  filter: blur(0.2px);
}

@keyframes code-fall {
  from {
    transform: translateY(-10%) translateX(0);
  }
  32% {
    transform: translateY(38%) translateX(var(--drift1));
  }
  66% {
    transform: translateY(82%) translateX(var(--drift2));
  }
  to {
    transform: translateY(146%) translateX(var(--drift3));
  }
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: var(--fs-12);
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0));
}

.hero h1 {
  margin-top: var(--sp-3);
  font-size: var(--fs-h1);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 13ch;
  margin-inline: auto;
}

.typewriter-wrap {
  color: transparent;
  background: linear-gradient(92deg, #6d7dff 0%, #4f66ff 34%, #4a63ff 66%, #97a8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 30px rgba(88, 112, 255, 0.28);
}

.caret {
  color: var(--accent-soft);
  animation: caret-blink 900ms steps(1) infinite;
}

@keyframes caret-blink {
  50% {
    opacity: 0;
  }
}

.hero-subtitle {
  margin-top: var(--sp-4);
  max-width: 64ch;
  margin-inline: auto;
  color: var(--text-muted);
  font-size: clamp(16px, 1.7vw, 20px);
}

.download-group {
  margin-top: var(--sp-5);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 11px 18px;
  font-size: var(--fs-14);
  font-weight: 600;
  transition: transform var(--dur-fast) var(--ease-smooth), background var(--dur-fast) var(--ease-smooth),
    border-color var(--dur-fast) var(--ease-smooth), box-shadow var(--dur-fast) var(--ease-smooth);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: scale(0.985);
}

.btn-primary {
  color: #12141a;
  background: linear-gradient(160deg, #e2e9f8 0%, #b7c8e7 58%, #93abd5 100%);
  box-shadow: 0 12px 32px rgba(138, 166, 212, 0.32);
}

.btn-primary:hover {
  background: linear-gradient(160deg, #edf2fa 0%, #c5d5ef 58%, #a0b7de 100%);
}

.btn-ghost {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.035);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.07);
}

.btn-small {
  padding: 8px 14px;
}

.selling-grid {
  margin-top: var(--sp-6);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
}

.selling-card,
.cap-card,
.flow-item,
.scene-main,
.scene-side,
.cta-card {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.glow-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background:
    radial-gradient(240px circle at var(--gx, 50%) var(--gy, 50%), rgba(175, 199, 236, 0.28), transparent 58%),
    radial-gradient(110px circle at var(--gx, 50%) var(--gy, 50%), rgba(204, 221, 247, 0.18), transparent 52%);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-smooth);
  pointer-events: none;
}

.glow-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image: radial-gradient(rgba(182, 202, 236, 0.26) 0.6px, transparent 0.6px);
  background-size: 8px 8px;
  mask-image: radial-gradient(220px circle at var(--gx, 50%) var(--gy, 50%), #000 0%, transparent 74%);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-smooth);
  pointer-events: none;
}

.glow-card:hover::before,
.glow-card:hover::after {
  opacity: 1;
}

.selling-card {
  padding: var(--sp-4);
}

.selling-card h3,
.cap-card h3,
.flow-item h3,
.scene-main h3,
.scene-side h3 {
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
}

.selling-card p,
.cap-card p,
.flow-item p,
.scene-main p,
.scene-side p,
.cta-card p {
  margin-top: var(--sp-2);
  color: var(--text-muted);
}

.section-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.section-head h2 {
  margin-top: var(--sp-3);
  font-size: var(--fs-h2);
  letter-spacing: -0.01em;
  line-height: 1.16;
}

.capability-grid {
  margin-top: var(--sp-6);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

.cap-card {
  padding: var(--sp-4);
  transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-smooth);
  transform-style: preserve-3d;
}

.capability-grid .cap-card:nth-child(1) {
  background:
    radial-gradient(260px 110px at 8% 0%, rgba(129, 170, 242, 0.16), transparent 78%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
}

.capability-grid .cap-card:nth-child(2) {
  background:
    radial-gradient(260px 110px at 92% 0%, rgba(132, 214, 225, 0.14), transparent 78%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
}

.capability-grid .cap-card:nth-child(3) {
  background:
    radial-gradient(260px 110px at 50% 0%, rgba(151, 173, 228, 0.14), transparent 78%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
}

.capability-grid .cap-card:nth-child(4) {
  background:
    radial-gradient(260px 110px at 80% 0%, rgba(165, 150, 235, 0.14), transparent 78%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
}

.cap-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  margin-bottom: var(--sp-3);
  color: #d6e1f4;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(166, 191, 235, 0.11);
}

.icon-wrap svg {
  width: 19px;
  height: 19px;
}

.flow-list {
  margin: var(--sp-6) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-3);
}

.flow-item {
  padding: var(--sp-4);
  display: grid;
  grid-template-columns: 76px 1fr;
  align-items: start;
  gap: var(--sp-3);
}

.flow-index {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.025);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
}

.scenes-section {
  padding-top: var(--sp-9);
}

.scene-layout {
  margin-top: var(--sp-6);
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: var(--sp-3);
}

.scene-main,
.scene-side {
  padding: var(--sp-4);
}

.scene-main {
  min-height: 460px;
  background:
    radial-gradient(420px 180px at 20% -10%, rgba(159, 185, 227, 0.24), transparent 80%),
    radial-gradient(320px 130px at 84% 22%, rgba(113, 152, 231, 0.18), transparent 80%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.018));
}

.scene-runtime {
  margin-top: var(--sp-3);
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background:
    radial-gradient(220px 90px at 12% 0%, rgba(118, 165, 246, 0.2), transparent 80%),
    radial-gradient(220px 90px at 88% 0%, rgba(143, 174, 243, 0.14), transparent 82%),
    linear-gradient(160deg, rgba(80, 114, 191, 0.14), rgba(115, 166, 231, 0.04));
}

.runtime-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.runtime-head span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #d6e4ff;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.runtime-head em {
  font-style: normal;
  font-size: 12px;
  color: #c5d8ff;
  border: 1px solid rgba(168, 195, 245, 0.36);
  border-radius: 999px;
  padding: 4px 8px;
  background: rgba(112, 157, 245, 0.22);
  box-shadow: 0 0 16px rgba(113, 155, 236, 0.25);
}

.runtime-visual {
  position: relative;
  height: 112px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    linear-gradient(to bottom, rgba(173, 201, 252, 0.08), transparent 45%),
    linear-gradient(to top, rgba(94, 122, 191, 0.16), rgba(16, 23, 42, 0.2));
  overflow: hidden;
}

.runtime-svg {
  width: 100%;
  height: 100%;
}

.runtime-wave {
  fill: none;
  stroke-linecap: round;
  stroke-width: 1.8;
  stroke-dasharray: 12 10;
  animation: wave-shift 6s linear infinite;
}

.wave-1 {
  stroke: rgba(193, 214, 254, 0.92);
}

.wave-2 {
  stroke: rgba(140, 179, 252, 0.78);
  animation-duration: 7.4s;
}

.wave-3 {
  stroke: rgba(128, 214, 241, 0.68);
  animation-duration: 8.1s;
}

@keyframes wave-shift {
  to {
    stroke-dashoffset: -220;
  }
}

.runtime-node {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 0%, #9fc0ff 60%, rgba(159, 192, 255, 0) 100%);
  box-shadow: 0 0 14px rgba(168, 195, 245, 0.78);
}

.node-1 {
  top: 70%;
  left: -3%;
  animation: node-flow-1 4.8s var(--ease-out) infinite;
}

.node-2 {
  top: 52%;
  left: -6%;
  animation: node-flow-2 5.6s var(--ease-out) infinite;
}

.node-3 {
  top: 62%;
  left: -4%;
  animation: node-flow-3 4.3s var(--ease-out) infinite;
}

@keyframes node-flow-1 {
  0% { transform: translateX(0) translateY(0); opacity: 0; }
  10% { opacity: 1; }
  50% { transform: translateX(320px) translateY(-34px); }
  100% { transform: translateX(620px) translateY(-58px); opacity: 0; }
}

@keyframes node-flow-2 {
  0% { transform: translateX(0) translateY(0); opacity: 0; }
  12% { opacity: 1; }
  56% { transform: translateX(350px) translateY(-26px); }
  100% { transform: translateX(650px) translateY(-46px); opacity: 0; }
}

@keyframes node-flow-3 {
  0% { transform: translateX(0) translateY(0); opacity: 0; }
  10% { opacity: 1; }
  48% { transform: translateX(290px) translateY(-30px); }
  100% { transform: translateX(590px) translateY(-52px); opacity: 0; }
}

.runtime-stats {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.runtime-stats span {
  font-size: 12px;
  color: #bfd4fa;
  border: 1px solid rgba(181, 203, 246, 0.3);
  border-radius: 999px;
  padding: 4px 9px;
  background: rgba(137, 168, 224, 0.12);
}

.scene-main-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.scene-main-head span {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: var(--fs-12);
  color: var(--accent);
  background: rgba(186, 205, 237, 0.1);
}

.scene-pill-row {
  margin-top: var(--sp-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.scene-pill-row span {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  color: #c8d7f6;
  background: rgba(139, 167, 223, 0.12);
}

.scene-side {
  min-height: 220px;
}

.scene-stack {
  display: grid;
  gap: var(--sp-3);
}

.scene-stack .scene-side:nth-child(1) {
  background:
    radial-gradient(260px 120px at 80% -10%, rgba(144, 171, 218, 0.2), transparent 76%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
}

.scene-stack .scene-side:nth-child(2) {
  background:
    radial-gradient(280px 130px at 22% -10%, rgba(137, 159, 228, 0.2), transparent 75%),
    linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.016));
}

pre {
  margin: var(--sp-3) 0 0;
  padding: 14px;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.4);
  overflow: auto;
}

code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #cbdbf3;
}

.cta-section {
  padding-bottom: calc(var(--sp-9) + 16px);
}

.faq-section {
  padding-top: var(--sp-9);
}

.faq-list {
  margin-top: var(--sp-6);
  display: grid;
  gap: var(--sp-3);
}

.faq-item {
  padding: var(--sp-2) var(--sp-3);
}

.faq-q {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  text-align: left;
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  align-items: center;
  cursor: pointer;
  padding: var(--sp-3) var(--sp-2);
}

.faq-q span:first-child {
  font-size: 18px;
  letter-spacing: -0.01em;
}

.faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: grid;
  place-items: center;
  color: #c7d8f8;
  transition: transform var(--dur-fast) var(--ease-smooth);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out),
    padding var(--dur-base) var(--ease-out);
  padding: 0 var(--sp-2);
}

.faq-item.is-open .faq-a {
  max-height: 220px;
  opacity: 1;
  padding: 0 var(--sp-2) var(--sp-3);
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
}

.cta-card {
  text-align: center;
  padding: var(--sp-6);
  background:
    radial-gradient(360px 190px at 50% 0%, rgba(149, 176, 222, 0.21), transparent 78%),
    linear-gradient(166deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow-md);
}

.cta-card h2 {
  margin-top: var(--sp-3);
  font-size: clamp(28px, 3.4vw, 46px);
  letter-spacing: -0.01em;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--sp-4) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  color: var(--text-muted);
  font-size: var(--fs-14);
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .header-nav {
    display: none;
  }

  .selling-grid,
  .capability-grid,
  .scene-layout {
    grid-template-columns: 1fr;
  }

  .scene-stack {
    grid-template-columns: 1fr;
  }

  .scene-main {
    min-height: auto;
  }

}

@media (max-width: 760px) {
  .section {
    padding: var(--sp-7) 0;
  }

  .hero {
    padding-top: calc(var(--sp-8) + 8px);
  }

  .flow-item {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }

  .cursor-halo {
    display: none;
  }

  .bg-code-bursts {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}