:root {
  --page: #080a0e;
  --page-soft: #0d1016;
  --panel: #11151d;
  --panel-raised: #171c25;
  --panel-muted: #0e1218;
  --ink: #f7f9f4;
  --ink-soft: #b7bec8;
  --ink-faint: #7f8896;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --lime: #b9ff38;
  --lime-deep: #7bdc1e;
  --lime-soft: rgba(185, 255, 56, 0.12);
  --cyan: #23e8d4;
  --magenta: #ff3ba7;
  --violet: #8b67ff;
  --black: #050607;
  --container: 1180px;
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --header-height: 78px;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 85% 5%, rgba(35, 232, 212, 0.07), transparent 28%),
    radial-gradient(circle at 12% 32%, rgba(255, 59, 167, 0.05), transparent 25%),
    var(--page);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button {
  color: inherit;
  font: inherit;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3,
strong {
  font-weight: 760;
}

h1,
h2,
h3 {
  letter-spacing: -0.045em;
}

:focus-visible {
  outline: 3px solid rgba(185, 255, 56, 0.55);
  outline-offset: 4px;
}

::selection {
  color: var(--black);
  background: var(--lime);
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.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;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--black);
  background: var(--lime);
  border-radius: 10px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header-height);
  background: rgba(8, 10, 14, 0.72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(20px);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(8, 10, 14, 0.94);
  border-color: var(--line);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 12px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  box-shadow: 0 10px 26px rgba(35, 232, 212, 0.16);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}

.brand-copy strong {
  font-size: 18px;
  letter-spacing: -0.025em;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--ink-faint);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.primary-nav > a {
  position: relative;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 650;
  transition: color 160ms ease;
}

.primary-nav > a:hover {
  color: var(--ink);
}

.primary-nav > a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  background: var(--lime);
  border-radius: 999px;
  content: "";
  transform: scaleX(0);
  transition: transform 160ms ease;
}

.primary-nav > a:not(.nav-cta):hover::after {
  transform: scaleX(1);
}

.nav-cta {
  padding: 10px 17px;
  color: var(--black) !important;
  background: var(--lime);
  border-radius: 999px;
}

.nav-cta:hover {
  background: #ceff73;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  background: var(--panel-raised);
  border: 1px solid var(--line);
  border-radius: 13px;
}

.nav-toggle > span:not(.sr-only) {
  display: block;
  width: 19px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
  border-radius: 99px;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 830px;
  padding: calc(var(--header-height) + 76px) 0 86px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 10, 14, 1) 0%, rgba(8, 10, 14, 0.94) 35%, rgba(8, 10, 14, 0.32) 72%, rgba(8, 10, 14, 0.08) 100%),
    linear-gradient(0deg, var(--page) 0%, transparent 26%);
  content: "";
}

.hero::after {
  position: absolute;
  z-index: -1;
  top: 13%;
  left: 46%;
  width: 380px;
  height: 380px;
  background: rgba(185, 255, 56, 0.13);
  border-radius: 50%;
  filter: blur(90px);
  content: "";
}

.hero-image {
  position: absolute;
  z-index: -3;
  inset: 0 0 0 auto;
  width: min(75vw, 1240px);
  height: 100%;
  object-fit: cover;
  object-position: center right;
  opacity: 0.92;
}

.hero-inner {
  position: relative;
}

.hero-copy {
  width: min(620px, 56%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--lime);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.eyebrow::before {
  width: 28px;
  height: 2px;
  background: currentColor;
  content: "";
}

.hero h1 {
  max-width: 600px;
  margin-bottom: 24px;
  font-size: clamp(58px, 7.4vw, 104px);
  line-height: 0.98;
}

.hero-lead {
  max-width: 590px;
  margin-bottom: 30px;
  color: #c9ced6;
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions,
.final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 750;
  transition:
    transform 160ms ease,
    color 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--black);
  background: var(--lime);
  box-shadow: 0 14px 38px rgba(185, 255, 56, 0.18);
}

.button-primary:hover {
  background: #ceff73;
}

.button-secondary {
  gap: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--line-strong);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 11px 24px;
  margin-top: 28px;
  color: var(--ink-soft);
  font-size: 13px;
}

.hero-proof span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-proof span::before {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--cyan);
  content: "";
}

.channel-note {
  max-width: 600px;
  margin: 22px 0 0;
  color: var(--ink-faint);
  font-size: 12px;
  line-height: 1.65;
}

.quick-strip {
  position: relative;
  z-index: 3;
  margin-top: -42px;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  background: rgba(17, 21, 29, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.quick-item {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 104px;
  padding: 22px;
  border-right: 1px solid var(--line);
  transition: background 160ms ease;
}

.quick-item:last-child {
  border-right: 0;
}

.quick-item:hover {
  background: rgba(255, 255, 255, 0.045);
}

.quick-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--black);
  background: var(--lime);
  border-radius: 14px;
  font-size: 18px;
  font-weight: 800;
}

.quick-item:nth-child(2) .quick-icon {
  background: var(--cyan);
}

.quick-item:nth-child(3) .quick-icon {
  color: var(--ink);
  background: var(--violet);
}

.quick-item:nth-child(4) .quick-icon {
  color: var(--ink);
  background: var(--magenta);
}

.quick-copy strong,
.quick-copy small {
  display: block;
}

.quick-copy strong {
  font-size: 15px;
}

.quick-copy small {
  margin-top: 3px;
  color: var(--ink-faint);
  font-size: 12px;
}

.section {
  padding: 112px 0;
}

.section-compact {
  padding: 84px 0;
}

.section-panel {
  background: var(--page-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(300px, 0.58fr);
  align-items: end;
  gap: 60px;
  margin-bottom: 48px;
}

.section-head.centered {
  display: block;
  max-width: 760px;
  margin-right: auto;
  margin-bottom: 52px;
  margin-left: auto;
  text-align: center;
}

.section-kicker {
  margin-bottom: 13px;
  color: var(--lime);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-head h2,
.split-copy h2,
.final-copy h2 {
  margin-bottom: 0;
  font-size: clamp(36px, 4.6vw, 62px);
  line-height: 1.08;
}

.section-head > p,
.section-head.centered > p,
.split-copy > p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.section-head.centered h2 {
  margin-bottom: 20px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.download-card,
.feature-card,
.step-card,
.compare-card,
.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
}

.download-card {
  position: relative;
  min-height: 320px;
  padding: 30px;
  overflow: hidden;
  border-radius: var(--radius-md);
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

.download-card:hover {
  border-color: rgba(185, 255, 56, 0.34);
  transform: translateY(-5px);
}

.download-card::after {
  position: absolute;
  right: -52px;
  bottom: -75px;
  width: 190px;
  height: 190px;
  background: var(--lime-soft);
  border-radius: 50%;
  filter: blur(3px);
  content: "";
}

.download-card:nth-child(2)::after {
  background: rgba(35, 232, 212, 0.1);
}

.download-card:nth-child(3)::after {
  background: rgba(139, 103, 255, 0.13);
}

.platform-mark {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 32px;
  color: var(--black);
  background: var(--lime);
  border-radius: 16px;
  font-size: 21px;
  font-weight: 850;
}

.download-card:nth-child(2) .platform-mark {
  background: var(--cyan);
}

.download-card:nth-child(3) .platform-mark {
  color: var(--ink);
  background: var(--violet);
}

.download-card h3 {
  margin-bottom: 10px;
  font-size: 24px;
}

.download-card p {
  min-height: 76px;
  margin-bottom: 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

.text-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--lime);
  font-size: 14px;
  font-weight: 760;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  position: relative;
  min-height: 300px;
  padding: 32px;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.feature-card.large {
  grid-column: span 7;
}

.feature-card.medium {
  grid-column: span 5;
}

.feature-card.small {
  grid-column: span 4;
  min-height: 270px;
}

.feature-number {
  display: inline-flex;
  margin-bottom: 44px;
  color: var(--lime);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
}

.feature-card h3 {
  max-width: 420px;
  margin-bottom: 12px;
  font-size: 27px;
}

.feature-card p {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.wave-visual {
  position: absolute;
  right: 24px;
  bottom: 25px;
  display: flex;
  align-items: center;
  gap: 7px;
  height: 105px;
  opacity: 0.46;
}

.wave-visual i {
  display: block;
  width: 7px;
  background: linear-gradient(180deg, var(--cyan), var(--lime));
  border-radius: 99px;
}

.wave-visual i:nth-child(1) {
  height: 28px;
}

.wave-visual i:nth-child(2) {
  height: 74px;
}

.wave-visual i:nth-child(3) {
  height: 46px;
}

.wave-visual i:nth-child(4) {
  height: 96px;
}

.wave-visual i:nth-child(5) {
  height: 58px;
}

.wave-visual i:nth-child(6) {
  height: 84px;
}

.wave-visual i:nth-child(7) {
  height: 36px;
}

.disc-visual {
  position: absolute;
  right: -18px;
  bottom: -36px;
  width: 180px;
  height: 180px;
  background:
    radial-gradient(circle, var(--black) 0 11%, var(--lime) 12% 16%, transparent 17%),
    repeating-radial-gradient(circle, #222935 0 3px, #0a0d12 4px 8px);
  border: 1px solid var(--line);
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(185, 255, 56, 0.12);
}

.album-stack {
  position: absolute;
  right: 22px;
  bottom: 20px;
  display: grid;
  grid-template-columns: repeat(3, 60px);
  gap: 8px;
  opacity: 0.58;
  transform: rotate(-5deg);
}

.album-stack i {
  display: block;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--magenta), var(--violet));
  border-radius: 12px;
}

.album-stack i:nth-child(2) {
  background: linear-gradient(135deg, var(--lime), var(--cyan));
}

.album-stack i:nth-child(3) {
  background: linear-gradient(135deg, #ffb244, var(--magenta));
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
  align-items: center;
  gap: 86px;
}

.split-copy .section-kicker {
  margin-bottom: 15px;
}

.split-copy h2 {
  margin-bottom: 24px;
}

.bullet-list {
  display: grid;
  gap: 16px;
  padding: 0;
  margin: 30px 0 0;
  list-style: none;
}

.bullet-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 13px;
  color: var(--ink-soft);
}

.bullet-list span {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--black);
  background: var(--lime);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 850;
}

.player-board {
  position: relative;
  min-height: 500px;
  padding: 26px;
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 20%, rgba(35, 232, 212, 0.15), transparent 28%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.player-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.player-dots {
  display: flex;
  gap: 7px;
}

.player-dots i {
  width: 8px;
  height: 8px;
  background: var(--ink-faint);
  border-radius: 50%;
}

.player-chip {
  padding: 6px 10px;
  color: var(--lime);
  background: var(--lime-soft);
  border: 1px solid rgba(185, 255, 56, 0.16);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.cover-tile {
  position: relative;
  min-height: 150px;
  padding: 18px;
  overflow: hidden;
  background: linear-gradient(135deg, #242b37, #12161d);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.cover-tile:nth-child(2) {
  background: linear-gradient(135deg, rgba(35, 232, 212, 0.2), #13171e);
}

.cover-tile:nth-child(3) {
  background: linear-gradient(135deg, rgba(255, 59, 167, 0.18), #13171e);
}

.cover-tile:nth-child(4) {
  background: linear-gradient(135deg, rgba(139, 103, 255, 0.22), #13171e);
}

.cover-tile strong,
.cover-tile small {
  position: relative;
  z-index: 2;
  display: block;
}

.cover-tile strong {
  margin-top: 65px;
  font-size: 14px;
}

.cover-tile small {
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 11px;
}

.cover-orb {
  position: absolute;
  top: -28px;
  right: -18px;
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--lime), var(--cyan));
  border-radius: 45% 55% 60% 40%;
  filter: saturate(0.9);
  transform: rotate(22deg);
}

.cover-tile:nth-child(2) .cover-orb {
  background: linear-gradient(135deg, var(--cyan), var(--violet));
}

.cover-tile:nth-child(3) .cover-orb {
  background: linear-gradient(135deg, var(--magenta), #ffb244);
}

.cover-tile:nth-child(4) .cover-orb {
  background: linear-gradient(135deg, var(--violet), var(--magenta));
}

.player-bar {
  position: absolute;
  right: 26px;
  bottom: 26px;
  left: 26px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 17px;
  padding: 16px 18px;
  background: rgba(8, 10, 14, 0.86);
  border: 1px solid var(--line);
  border-radius: 16px;
  backdrop-filter: blur(12px);
}

.play-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--black);
  background: var(--lime);
  border-radius: 50%;
  font-size: 13px;
}

.track-line {
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

.track-line::before {
  display: block;
  width: 42%;
  height: 100%;
  background: linear-gradient(90deg, var(--lime), var(--cyan));
  border-radius: inherit;
  content: "";
}

.player-time {
  color: var(--ink-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
}

.scenario-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 460px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.scenario-tabs {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--panel-muted);
  border-right: 1px solid var(--line);
}

.scenario-tab {
  position: relative;
  padding: 20px 19px;
  color: var(--ink-faint);
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 15px;
  cursor: pointer;
  transition:
    color 160ms ease,
    background 160ms ease;
}

.scenario-tab span {
  display: block;
  margin-bottom: 5px;
  color: inherit;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.scenario-tab strong {
  font-size: 17px;
}

.scenario-tab.is-active {
  color: var(--ink);
  background: var(--panel-raised);
}

.scenario-tab.is-active::after {
  position: absolute;
  top: 18px;
  right: 14px;
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--lime);
  content: "";
}

.scenario-panels {
  padding: 54px;
}

.scenario-panel {
  height: 100%;
}

.scenario-panel[hidden] {
  display: none;
}

.scenario-panel.is-active {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  align-items: center;
  gap: 54px;
}

.scenario-panel h3 {
  margin-bottom: 16px;
  font-size: 35px;
  line-height: 1.15;
}

.scenario-panel p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.scenario-card {
  min-height: 260px;
  padding: 28px;
  background:
    radial-gradient(circle at 75% 20%, rgba(185, 255, 56, 0.14), transparent 32%),
    #0d1117;
  border: 1px solid var(--line);
  border-radius: 22px;
}

.scenario-card-label {
  display: inline-flex;
  padding: 6px 10px;
  color: var(--lime);
  background: var(--lime-soft);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.scenario-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 64px 0 0;
  list-style: none;
}

.scenario-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.scenario-list span {
  color: var(--ink-faint);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.compare-card {
  padding: 36px;
  border-radius: var(--radius-md);
}

.compare-card.accent {
  color: var(--black);
  background: var(--lime);
  border-color: var(--lime);
}

.compare-label {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--lime);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.14em;
}

.compare-card.accent .compare-label {
  color: rgba(0, 0, 0, 0.56);
}

.compare-card h3 {
  margin-bottom: 20px;
  font-size: 30px;
}

.compare-list {
  display: grid;
  gap: 13px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.compare-list li {
  display: flex;
  gap: 10px;
  color: var(--ink-soft);
}

.compare-card.accent .compare-list li {
  color: rgba(0, 0, 0, 0.72);
}

.compare-list li::before {
  color: var(--lime);
  content: "↗";
}

.compare-card.accent .compare-list li::before {
  color: var(--black);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  counter-reset: install;
}

.step-card {
  position: relative;
  min-height: 260px;
  padding: 28px;
  border-radius: var(--radius-md);
  counter-increment: install;
}

.step-card::before {
  display: block;
  margin-bottom: 42px;
  color: var(--lime);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  content: "0" counter(install);
}

.step-card h3 {
  margin-bottom: 12px;
  font-size: 21px;
}

.step-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.trust-bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  margin-top: 24px;
  padding: 20px 24px;
  color: var(--ink-soft);
  background: rgba(185, 255, 56, 0.06);
  border: 1px solid rgba(185, 255, 56, 0.15);
  border-radius: 16px;
  font-size: 13px;
}

.trust-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--black);
  background: var(--lime);
  border-radius: 50%;
  font-weight: 900;
}

.trust-bar a {
  color: var(--lime);
  font-weight: 750;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 12px;
  overflow: hidden;
  border-radius: 18px;
  transition: border-color 160ms ease;
}

.faq-item.is-open {
  border-color: rgba(185, 255, 56, 0.32);
}

.faq-question {
  display: grid;
  grid-template-columns: 1fr 36px;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 24px 27px;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.faq-question strong {
  font-size: 17px;
  letter-spacing: -0.015em;
}

.faq-plus {
  position: relative;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.faq-plus::before,
.faq-plus::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  background: var(--lime);
  content: "";
  transform: translate(-50%, -50%);
  transition: transform 160ms ease;
}

.faq-plus::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.is-open .faq-plus::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-answer {
  padding: 0 80px 25px 27px;
}

.faq-answer p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.final-cta {
  padding: 56px 0 110px;
}

.final-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 50px;
  padding: 54px;
  overflow: hidden;
  color: var(--black);
  background: var(--lime);
  border-radius: var(--radius-lg);
}

.final-shell::after {
  position: absolute;
  right: 24%;
  bottom: -120px;
  width: 260px;
  height: 260px;
  background: var(--cyan);
  border-radius: 50%;
  filter: blur(22px);
  opacity: 0.42;
  content: "";
}

.final-copy {
  position: relative;
  z-index: 1;
}

.final-copy .section-kicker {
  color: rgba(0, 0, 0, 0.52);
}

.final-copy h2 {
  max-width: 700px;
  margin-bottom: 16px;
}

.final-copy p {
  max-width: 680px;
  margin-bottom: 0;
  color: rgba(0, 0, 0, 0.7);
}

.final-actions {
  position: relative;
  z-index: 1;
  flex-direction: column;
}

.final-actions .button-primary {
  color: var(--ink);
  background: var(--black);
}

.final-actions .button-secondary {
  color: var(--black);
  background: rgba(255, 255, 255, 0.34);
  border-color: rgba(0, 0, 0, 0.18);
}

.site-footer {
  padding: 54px 0 34px;
  background: #050607;
  border-top: 1px solid var(--line);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(280px, 1.15fr) repeat(2, minmax(160px, 0.45fr));
  gap: 70px;
  padding-bottom: 46px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.footer-brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}

.footer-brand strong {
  font-size: 18px;
}

.footer-intro {
  max-width: 470px;
  margin-bottom: 0;
  color: var(--ink-faint);
  font-size: 13px;
}

.footer-column strong {
  display: block;
  margin-bottom: 18px;
  font-size: 13px;
}

.footer-column a {
  display: block;
  margin-bottom: 10px;
  color: var(--ink-faint);
  font-size: 13px;
  transition: color 160ms ease;
}

.footer-column a:hover {
  color: var(--lime);
}

.footer-bottom {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
  padding-top: 25px;
  color: #626a75;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

.footer-bottom p {
  max-width: 760px;
  margin-bottom: 0;
}

@media (max-width: 1080px) {
  .primary-nav {
    gap: 19px;
  }

  .hero {
    min-height: 770px;
  }

  .hero-copy {
    width: 62%;
  }

  .quick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quick-item:nth-child(2) {
    border-right: 0;
  }

  .quick-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  :root {
    --header-height: 70px;
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav {
    position: fixed;
    top: var(--header-height);
    right: 16px;
    left: 16px;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 18px;
    background: rgba(17, 21, 29, 0.98);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .primary-nav > a {
    padding: 12px 13px;
    border-radius: 10px;
  }

  .primary-nav > a::after {
    display: none;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .hero {
    min-height: 820px;
    padding-top: calc(var(--header-height) + 90px);
  }

  .hero::before {
    background:
      linear-gradient(90deg, rgba(8, 10, 14, 0.99) 0%, rgba(8, 10, 14, 0.92) 55%, rgba(8, 10, 14, 0.42) 100%),
      linear-gradient(0deg, var(--page) 0%, transparent 20%);
  }

  .hero-image {
    width: 100%;
    opacity: 0.58;
  }

  .hero-copy {
    width: 78%;
  }

  .section-head,
  .split-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .download-card {
    min-height: auto;
  }

  .download-card p {
    min-height: 0;
  }

  .feature-card.large,
  .feature-card.medium {
    grid-column: span 12;
  }

  .feature-card.small {
    grid-column: span 6;
  }

  .scenario-shell {
    grid-template-columns: 1fr;
  }

  .scenario-tabs {
    flex-direction: row;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .scenario-tab {
    min-width: 180px;
  }

  .scenario-panel.is-active {
    grid-template-columns: 1fr;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .final-shell {
    grid-template-columns: 1fr;
  }

  .final-actions {
    align-items: flex-start;
    flex-direction: row;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 30px), var(--container));
  }

  .brand-copy small {
    display: none;
  }

  .hero {
    min-height: 780px;
    padding-bottom: 64px;
  }

  .hero-copy {
    width: 100%;
  }

  .hero h1 {
    font-size: clamp(50px, 15vw, 72px);
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-actions,
  .final-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .quick-strip {
    margin-top: -24px;
  }

  .quick-grid {
    grid-template-columns: 1fr;
  }

  .quick-item,
  .quick-item:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .quick-item:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 82px 0;
  }

  .section-head h2,
  .split-copy h2,
  .final-copy h2 {
    font-size: 36px;
  }

  .feature-card.small {
    grid-column: span 12;
  }

  .feature-card {
    min-height: 280px;
    padding: 26px;
  }

  .feature-number {
    margin-bottom: 32px;
  }

  .player-board {
    min-height: 440px;
    padding: 18px;
  }

  .player-bar {
    right: 18px;
    bottom: 18px;
    left: 18px;
  }

  .scenario-tabs {
    padding: 14px;
  }

  .scenario-panels {
    padding: 28px;
  }

  .scenario-panel h3 {
    font-size: 28px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .step-card {
    min-height: auto;
  }

  .trust-bar {
    grid-template-columns: auto 1fr;
  }

  .trust-bar a {
    grid-column: 2;
  }

  .faq-question {
    padding: 21px;
  }

  .faq-answer {
    padding: 0 64px 22px 21px;
  }

  .final-shell {
    padding: 34px 25px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}