:root {
  --navy-1000: #020713;
  --navy-950: #050b1b;
  --navy-900: #08142b;
  --navy-800: #102343;
  --navy-700: #17365c;
  --blue-500: #256df3;
  --blue-400: #4d8dff;
  --cyan-400: #55dff7;
  --gold-500: #f3a928;
  --gold-400: #ffca5b;
  --gold-300: #ffe39b;
  --coral-500: #ff6f61;
  --ink-950: #0d1728;
  --ink-800: #26364f;
  --ink-600: #5d6d82;
  --ink-400: #91a0b1;
  --paper: #f7f8fc;
  --white: #ffffff;
  --line: #dfe5ef;
  --line-dark: rgba(255, 255, 255, 0.12);
  --container: 1180px;
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --shadow-sm: 0 14px 34px rgba(16, 35, 67, 0.09);
  --shadow-lg: 0 28px 80px rgba(2, 7, 19, 0.24);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink-950);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 9px 14px;
  color: var(--navy-950);
  background: var(--gold-400);
  border-radius: 9px;
  font-weight: 800;
  transform: translateY(-150%);
}

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

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--white);
  background: rgba(5, 11, 27, 0.9);
  border-bottom: 1px solid var(--line-dark);
  backdrop-filter: blur(18px);
}

.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  color: var(--white);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.brand-mark {
  position: relative;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--navy-950);
  background: linear-gradient(145deg, var(--gold-300), var(--gold-500));
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 13px;
  box-shadow: 0 9px 24px rgba(243, 169, 40, 0.28);
  font-weight: 950;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(5, 11, 27, 0.24);
  border-radius: 9px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 3px;
}

.site-nav a {
  padding: 9px 12px;
  color: #bfcce0;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  transition: color 160ms ease, background 160ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--white);
  background: rgba(77, 141, 255, 0.15);
}

.nav-download {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  padding: 0 18px;
  color: var(--navy-950);
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  border-radius: 12px;
  box-shadow: 0 9px 24px rgba(243, 169, 40, 0.22);
  font-size: 14px;
  font-weight: 900;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.nav-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 13px 30px rgba(243, 169, 40, 0.3);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  padding: 0;
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  width: 19px;
  height: 2px;
  display: block;
  background: currentColor;
  border-radius: 99px;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle::before { transform: translateY(-5px); }
.menu-toggle::after { transform: translateY(5px); }
.menu-toggle[aria-expanded="true"] span { opacity: 0; }
.menu-toggle[aria-expanded="true"]::before { transform: translateY(2px) rotate(45deg); }
.menu-toggle[aria-expanded="true"]::after { transform: translateY(-2px) rotate(-45deg); }

.hero {
  position: relative;
  min-height: 680px;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background-color: var(--navy-950);
  background-image:
    linear-gradient(90deg, rgba(2, 7, 19, 0.96) 0%, rgba(2, 7, 19, 0.9) 30%, rgba(2, 7, 19, 0.34) 65%, rgba(2, 7, 19, 0.18) 100%),
    url("../images/hero-game-hub.jpg");
  background-position: center;
  background-size: cover;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(37, 109, 243, 0.24), transparent 33%),
    linear-gradient(180deg, transparent 66%, rgba(5, 11, 27, 0.72));
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 610px) 1fr;
  align-items: center;
  gap: 60px;
  padding-block: 92px 104px;
}

.hero-kicker,
.eyebrow {
  margin: 0 0 15px;
  color: var(--gold-400);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(48px, 6.2vw, 82px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: var(--gold-400);
  text-shadow: 0 0 34px rgba(243, 169, 40, 0.28);
}

.hero-lead {
  max-width: 590px;
  margin: 25px 0 0;
  color: #d6e1f1;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 34px;
}

.button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-weight: 900;
  line-height: 1.2;
  transition: transform 170ms ease, box-shadow 170ms ease, border-color 170ms ease;
}

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

.button-primary {
  color: var(--navy-950);
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  box-shadow: 0 15px 34px rgba(243, 169, 40, 0.27);
}

.button-primary:hover {
  box-shadow: 0 18px 40px rgba(243, 169, 40, 0.36);
}

.button-secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(10px);
}

.button-secondary:hover {
  border-color: var(--blue-400);
}

.button-blue {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-500), #1554c9);
  box-shadow: 0 13px 30px rgba(37, 109, 243, 0.25);
}

.button-outline-dark {
  color: var(--ink-950);
  background: transparent;
  border-color: #b8c3d2;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 11px 18px;
  margin-top: 28px;
  color: #aec0d9;
  font-size: 14px;
  font-weight: 700;
}

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

.hero-meta span::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--cyan-400);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(85, 223, 247, 0.75);
}

.hero-panel {
  align-self: end;
  justify-self: end;
  width: 250px;
  margin-bottom: 16px;
  padding: 19px;
  color: #dce8f8;
  background: rgba(8, 20, 43, 0.66);
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(14px);
}

.hero-panel strong {
  display: block;
  color: var(--white);
  font-size: 20px;
}

.hero-panel span {
  display: block;
  margin-top: 4px;
  color: #9fb3d1;
  font-size: 13px;
}

.quick-strip {
  position: relative;
  z-index: 3;
  margin-top: -38px;
}

.quick-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(223, 229, 239, 0.8);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.quick-item {
  position: relative;
  padding: 24px 25px;
}

.quick-item + .quick-item::before {
  content: "";
  position: absolute;
  top: 24px;
  bottom: 24px;
  left: 0;
  width: 1px;
  background: var(--line);
}

.quick-item strong,
.quick-item span {
  display: block;
}

.quick-item strong {
  font-size: 18px;
}

.quick-item span {
  margin-top: 3px;
  color: var(--ink-600);
  font-size: 13px;
}

.section {
  padding: 100px 0;
}

.section-soft {
  background: var(--paper);
}

.section-dark {
  color: var(--white);
  background:
    radial-gradient(circle at 84% 16%, rgba(37, 109, 243, 0.18), transparent 32%),
    var(--navy-950);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-heading.centered {
  margin-inline: auto;
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.section-heading > p:last-child {
  margin: 15px 0 0;
  color: var(--ink-600);
  font-size: 17px;
}

.section-dark .section-heading > p:last-child {
  color: #aebed4;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.game-card,
.feature-card,
.content-card {
  position: relative;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.game-card {
  min-height: 270px;
  display: flex;
  flex-direction: column;
  padding: 28px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.game-card::after {
  content: "";
  position: absolute;
  right: -42px;
  bottom: -42px;
  width: 135px;
  height: 135px;
  background: radial-gradient(circle, rgba(37, 109, 243, 0.11), transparent 68%);
  border-radius: 50%;
}

.game-card:hover {
  transform: translateY(-5px);
  border-color: #b9caf0;
  box-shadow: 0 20px 50px rgba(16, 35, 67, 0.13);
}

.game-icon,
.feature-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: linear-gradient(145deg, var(--blue-400), #174fae);
  border-radius: 16px;
  box-shadow: 0 10px 24px rgba(37, 109, 243, 0.2);
  font-weight: 950;
}

.game-card:nth-child(2n) .game-icon,
.feature-card:nth-child(3n) .feature-icon {
  color: var(--navy-950);
  background: linear-gradient(145deg, var(--gold-300), var(--gold-500));
  box-shadow: 0 10px 24px rgba(243, 169, 40, 0.2);
}

.game-card h3,
.feature-card h3,
.content-card h3 {
  margin: 20px 0 7px;
  font-size: 22px;
  line-height: 1.35;
}

.game-card p,
.feature-card p,
.content-card p {
  margin: 0;
  color: var(--ink-600);
}

.game-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.game-tags span {
  padding: 4px 9px;
  color: var(--blue-500);
  background: #edf3ff;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 800;
}

.text-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  align-self: flex-start;
  margin-top: auto;
  padding-top: 20px;
  color: var(--blue-500);
  font-weight: 900;
}

.text-link::after {
  content: "→";
  transition: transform 160ms ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  padding: 28px;
}

.feature-card h3 {
  margin-top: 18px;
}

.experience-layout,
.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 74px;
}

.phone-stage {
  position: relative;
  min-height: 570px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 38%, rgba(85, 223, 247, 0.16), transparent 38%),
    linear-gradient(145deg, var(--navy-900), var(--navy-1000));
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
}

.phone-stage::before,
.phone-stage::after {
  content: "";
  position: absolute;
  width: 230px;
  height: 230px;
  border: 1px solid rgba(77, 141, 255, 0.18);
  border-radius: 50%;
}

.phone-stage::before { top: -78px; right: -52px; }
.phone-stage::after { bottom: -92px; left: -65px; }

.phone {
  position: relative;
  z-index: 2;
  width: 268px;
  padding: 10px;
  background: #02050b;
  border: 2px solid #5f6c82;
  border-radius: 42px;
  box-shadow: 0 34px 60px rgba(0, 0, 0, 0.5), 0 0 46px rgba(37, 109, 243, 0.22);
  transform: rotate(-3deg);
}

.phone-screen {
  min-height: 506px;
  overflow: hidden;
  padding: 18px 14px 16px;
  color: var(--white);
  background:
    radial-gradient(circle at 80% 10%, rgba(243, 169, 40, 0.24), transparent 26%),
    linear-gradient(180deg, #102b55, #061126 55%);
  border-radius: 32px;
}

.phone-notch {
  width: 84px;
  height: 20px;
  margin: -18px auto 17px;
  background: #02050b;
  border-radius: 0 0 14px 14px;
}

.phone-title {
  font-size: 17px;
  font-weight: 900;
}

.phone-banner {
  display: flex;
  flex-direction: column;
  justify-content: end;
  min-height: 138px;
  margin-top: 13px;
  padding: 16px;
  background:
    radial-gradient(circle at 78% 24%, rgba(255, 202, 91, 0.88) 0 5%, transparent 6%),
    linear-gradient(135deg, #1e68ec, #6d3bd8 62%, #f3a928);
  border-radius: 18px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.phone-banner strong { font-size: 17px; }
.phone-banner span { color: #ecf3ff; font-size: 11px; }

.phone-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px;
  margin-top: 13px;
}

.phone-game {
  min-height: 74px;
  display: grid;
  place-items: center;
  padding: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  font-size: 12px;
  font-weight: 800;
}

.check-list,
.detail-list {
  display: grid;
  gap: 17px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.detail-list li {
  position: relative;
  padding-left: 37px;
}

.check-list li::before,
.detail-list li::before {
  content: "✓";
  position: absolute;
  top: 0;
  left: 0;
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  color: var(--navy-950);
  background: var(--gold-400);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 950;
}

.section-dark .check-list li {
  color: #c9d7ea;
}

.cta-band {
  padding: 72px 0;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(5, 11, 27, 0.97), rgba(5, 11, 27, 0.72)),
    url("../images/hero-game-hub.jpg") center 52% / cover;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-inner h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.cta-inner p {
  max-width: 650px;
  margin: 10px 0 0;
  color: #b9c8dc;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 82px;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 20%, rgba(243, 169, 40, 0.2), transparent 27%),
    radial-gradient(circle at 18% 10%, rgba(37, 109, 243, 0.22), transparent 35%),
    linear-gradient(135deg, var(--navy-950), var(--navy-800));
}

.page-hero::after {
  content: "";
  position: absolute;
  right: 5%;
  bottom: -120px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(255, 202, 91, 0.16);
  border-radius: 50%;
  box-shadow: 0 0 0 46px rgba(37, 109, 243, 0.035), 0 0 0 92px rgba(37, 109, 243, 0.025);
}

.breadcrumbs {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 21px;
  color: #9fb2ce;
  font-size: 13px;
  font-weight: 700;
}

.breadcrumbs a:hover { color: var(--white); }

.page-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0;
  font-size: clamp(40px, 5.5vw, 64px);
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.page-hero p {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 18px 0 0;
  color: #c4d2e6;
  font-size: 18px;
}

.page-hero-actions {
  position: relative;
  z-index: 1;
  margin-top: 26px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 30px;
}

.filter-button {
  min-height: 42px;
  padding: 0 16px;
  color: var(--ink-800);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 99px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
}

.filter-button:hover,
.filter-button.is-active {
  color: var(--white);
  background: var(--blue-500);
  border-color: var(--blue-500);
}

.game-card[hidden] { display: none; }

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

.content-card {
  padding: 31px;
}

.content-card h3 { margin-top: 0; }

.content-number {
  display: block;
  margin-bottom: 16px;
  color: var(--blue-500);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0.12em;
}

.feature-showcase {
  display: grid;
  gap: 22px;
}

.feature-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 25px;
  align-items: start;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.feature-row-index {
  color: #c9d3e3;
  font-size: 46px;
  font-weight: 950;
  line-height: 1;
}

.feature-row h2 {
  margin: 0 0 8px;
  font-size: 25px;
  line-height: 1.35;
}

.feature-row p {
  margin: 0;
  color: var(--ink-600);
}

.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 36px;
  align-items: stretch;
}

.download-card {
  padding: 38px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.download-card.primary {
  color: var(--white);
  background:
    radial-gradient(circle at 84% 14%, rgba(255, 202, 91, 0.23), transparent 30%),
    linear-gradient(145deg, var(--navy-800), var(--navy-950));
  border-color: rgba(255, 255, 255, 0.08);
}

.download-card h2 {
  margin: 0;
  font-size: 33px;
  line-height: 1.25;
}

.download-card > p {
  margin: 12px 0 0;
  color: var(--ink-600);
}

.download-card.primary > p { color: #b7c7dd; }

.download-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 28px 0;
}

.download-spec {
  padding: 15px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 13px;
}

.download-spec span,
.download-spec strong { display: block; }
.download-spec span { color: #91a7c4; font-size: 12px; }
.download-spec strong { margin-top: 2px; color: var(--white); }

.download-note {
  margin-top: 16px;
  color: #9fb2ce;
  font-size: 13px;
}

.step-list {
  display: grid;
  gap: 19px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: install-step;
}

.step-list li {
  position: relative;
  min-height: 66px;
  padding-left: 82px;
  counter-increment: install-step;
}

.step-list li::before {
  content: counter(install-step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  color: var(--blue-500);
  background: #eef3ff;
  border: 1px solid #d6e2fb;
  border-radius: 18px;
  font-size: 15px;
  font-weight: 950;
}

.step-list h3 {
  margin: 0 0 3px;
  font-size: 18px;
}

.step-list p {
  margin: 0;
  color: var(--ink-600);
}

.guide-timeline {
  position: relative;
  display: grid;
  gap: 20px;
}

.guide-step {
  position: relative;
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 22px;
  padding: 29px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.guide-step-number {
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  color: var(--navy-950);
  background: linear-gradient(145deg, var(--gold-300), var(--gold-500));
  border-radius: 18px;
  font-size: 17px;
  font-weight: 950;
}

.guide-step h2 {
  margin: 0 0 6px;
  font-size: 23px;
}

.guide-step p {
  margin: 0;
  color: var(--ink-600);
}

.tip-box {
  margin-top: 32px;
  padding: 24px 26px;
  color: #7b4f00;
  background: #fff8e7;
  border: 1px solid #f3d48e;
  border-radius: 16px;
}

.tip-box strong { display: block; margin-bottom: 5px; color: #5f3b00; }
.tip-box p { margin: 0; }

.faq-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.34fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.faq-aside {
  position: sticky;
  top: 108px;
  padding: 27px;
  color: var(--white);
  background: linear-gradient(145deg, var(--navy-800), var(--navy-950));
  border-radius: var(--radius-md);
}

.faq-aside h2 {
  margin: 0;
  font-size: 24px;
}

.faq-aside p {
  margin: 9px 0 0;
  color: #aebfd6;
  font-size: 14px;
}

.faq-aside .button {
  width: 100%;
  min-height: 48px;
  margin-top: 22px;
  padding-inline: 15px;
}

.faq-list {
  display: grid;
  gap: 13px;
}

.faq-list details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 17px;
  box-shadow: var(--shadow-sm);
}

.faq-list summary {
  position: relative;
  padding: 22px 58px 22px 24px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 900;
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 22px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: var(--blue-500);
  background: #edf3ff;
  border-radius: 9px;
  transform: translateY(-50%);
  transition: transform 170ms ease;
}

.faq-list details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--ink-600);
}

.faq-answer p { margin: 0; }

.site-footer {
  padding: 54px 0 86px;
  color: #aebbd0;
  background: var(--navy-1000);
  border-top: 1px solid var(--line-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.9fr;
  gap: 70px;
}

.footer-brand .brand { display: inline-flex; }
.footer-brand p { max-width: 390px; margin: 17px 0 0; font-size: 14px; }

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-column strong {
  display: block;
  margin-bottom: 13px;
  color: var(--white);
}

.footer-column a {
  display: block;
  margin-top: 8px;
  font-size: 14px;
}

.footer-column a:hover { color: var(--gold-400); }

.mobile-download-bar {
  position: fixed;
  right: 12px;
  bottom: max(12px, env(safe-area-inset-bottom));
  left: 12px;
  z-index: 45;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 10px 10px 15px;
  color: var(--white);
  background: rgba(5, 11, 27, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 17px;
  box-shadow: 0 16px 40px rgba(2, 7, 19, 0.42);
  backdrop-filter: blur(14px);
}

.mobile-download-bar strong,
.mobile-download-bar span { display: block; }
.mobile-download-bar strong { font-size: 14px; }
.mobile-download-bar span { color: #9db0cb; font-size: 11px; }
.mobile-download-bar a {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  padding: 0 15px;
  color: var(--navy-950);
  background: var(--gold-400);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 950;
}

@media (max-width: 1040px) {
  .site-nav a { padding-inline: 8px; font-size: 14px; }
  .hero { min-height: 610px; background-position: 61% center; }
  .hero-grid { grid-template-columns: minmax(0, 580px) 1fr; }
  .hero-panel { display: none; }
  .quick-strip-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-item:nth-child(3)::before { display: none; }
  .quick-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .experience-layout, .split-layout { gap: 42px; }
}

@media (max-width: 880px) {
  .nav-shell { min-height: 68px; }
  .site-nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: grid;
    gap: 3px;
    max-height: 0;
    overflow: hidden;
    padding: 0 20px;
    visibility: hidden;
    opacity: 0;
    background: rgba(5, 11, 27, 0.98);
    border-bottom: 1px solid var(--line-dark);
    transition: max-height 220ms ease, padding 220ms ease, opacity 180ms ease, visibility 180ms ease;
  }
  .site-nav.is-open {
    max-height: calc(100dvh - 68px);
    padding-block: 15px 23px;
    visibility: visible;
    opacity: 1;
  }
  .site-nav a { padding: 13px 14px; font-size: 16px; }
  .menu-toggle { display: grid; }
  .nav-download { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr; }
  .game-grid, .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .experience-layout, .split-layout, .download-layout, .faq-layout { grid-template-columns: 1fr; }
  .phone-stage { min-height: 520px; }
  .faq-aside { position: static; }
  .footer-grid { grid-template-columns: 1fr; gap: 42px; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  .brand { font-size: 18px; }
  .brand-mark { width: 38px; height: 38px; border-radius: 12px; }
  .nav-download { display: none; }
  .hero {
    min-height: 650px;
    background-image:
      linear-gradient(180deg, rgba(2, 7, 19, 0.48) 0%, rgba(2, 7, 19, 0.92) 50%, rgba(2, 7, 19, 0.99) 100%),
      url("../images/hero-game-hub.jpg");
    background-position: 67% center;
  }
  .hero-grid { align-items: end; padding-block: 150px 84px; }
  .hero h1 { font-size: clamp(42px, 14vw, 60px); }
  .hero-lead { font-size: 16px; line-height: 1.8; }
  .hero-actions, .button-row { display: grid; grid-template-columns: 1fr; }
  .hero-actions .button, .button-row .button { width: 100%; }
  .hero-meta { gap: 8px 14px; }
  .quick-strip { margin-top: -22px; }
  .quick-strip-grid { grid-template-columns: 1fr; }
  .quick-item { padding: 18px 20px; }
  .quick-item + .quick-item::before { top: 0; right: 20px; bottom: auto; left: 20px; width: auto; height: 1px; }
  .quick-item:nth-child(3)::before { display: block; }
  .quick-item:nth-child(-n+2) { border-bottom: 0; }
  .section { padding: 72px 0; }
  .section-heading { margin-bottom: 31px; }
  .section-heading h2 { font-size: 32px; }
  .section-heading > p:last-child { font-size: 15px; }
  .game-grid, .feature-grid, .detail-grid { grid-template-columns: 1fr; }
  .game-card { min-height: 245px; padding: 24px; }
  .feature-card, .content-card { padding: 24px; }
  .phone-stage { min-height: 500px; border-radius: 24px; }
  .phone { width: 250px; }
  .cta-band { padding: 58px 0; }
  .cta-inner { align-items: stretch; flex-direction: column; gap: 24px; }
  .cta-inner .button { width: 100%; }
  .page-hero { padding: 58px 0 62px; }
  .page-hero h1 { font-size: 39px; }
  .page-hero p { font-size: 16px; }
  .feature-row { grid-template-columns: 1fr; gap: 14px; padding: 25px; }
  .feature-row-index { font-size: 34px; }
  .download-card { padding: 26px; border-radius: 24px; }
  .download-card h2 { font-size: 28px; }
  .download-specs { grid-template-columns: 1fr; }
  .guide-step { grid-template-columns: 56px 1fr; gap: 14px; padding: 22px; }
  .guide-step-number { width: 50px; height: 50px; border-radius: 15px; }
  .guide-step h2 { font-size: 20px; }
  .faq-aside { padding: 24px; }
  .faq-list summary { padding: 19px 52px 19px 20px; font-size: 16px; }
  .faq-answer { padding: 0 20px 20px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .mobile-download-bar { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

@media print {
  .site-header, .mobile-download-bar, .site-footer, .cta-band { display: none; }
  .page-hero { color: var(--ink-950); background: none; padding-block: 28px; }
  .page-hero p, .breadcrumbs { color: var(--ink-600); }
  .section { padding-block: 35px; }
}