:root {
  --bg: #0f1220;
  --bg-deep: #090b13;
  --surface: #151927;
  --surface-2: #1d2533;
  --muted: #edf1f6;
  --text: #f7f9fb;
  --ink: #182030;
  --ink-soft: #556070;
  --line: rgba(255, 255, 255, 0.14);
  --line-dark: rgba(24, 32, 48, 0.12);
  --cyan: #48d7d1;
  --gold: #d8b46a;
  --coral: #df796e;
  --green: #58b98b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
  --radius: 8px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f7f8fb;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 8px 12px;
  color: var(--bg);
  background: #fff;
  border-radius: 6px;
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

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

.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;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 11, 19, 0.76);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 176px;
  color: var(--text);
}

.brand img {
  width: 52px;
  height: 52px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  margin-top: 2px;
  color: rgba(247, 249, 251, 0.72);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  position: relative;
  padding: 9px 12px;
  color: rgba(247, 249, 251, 0.82);
  border-radius: 6px;
  font-size: 14px;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(72, 215, 209, 0.28);
  transform: translateY(-1px);
  outline: none;
}

.site-nav .nav-download {
  color: #071015;
  background: linear-gradient(135deg, var(--cyan), #e4cc8b);
  box-shadow: 0 10px 24px rgba(72, 215, 209, 0.18);
}

.site-nav .nav-download:hover,
.site-nav .nav-download:focus-visible {
  color: #071015;
  background: linear-gradient(135deg, #69e3dd, #edd699);
  box-shadow: 0 14px 30px rgba(72, 215, 209, 0.24);
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.nav-toggle span:not(.sr-only) {
  position: absolute;
  left: 50%;
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 999px;
  transform: translateX(-50%);
  transition: top 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle span:not(.sr-only):nth-child(1) {
  top: 14px;
}

.nav-toggle span:not(.sr-only):nth-child(2) {
  top: 21px;
}

.nav-toggle span:not(.sr-only):nth-child(3) {
  top: 28px;
}

.nav-toggle.is-open span:not(.sr-only):nth-child(1) {
  top: 21px;
  transform: translateX(-50%) rotate(45deg);
}

.nav-toggle.is-open span:not(.sr-only):nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:not(.sr-only):nth-child(3) {
  top: 21px;
  transform: translateX(-50%) rotate(-45deg);
}

.section {
  padding: 92px 0;
}

.section-dark {
  color: var(--text);
  background: var(--bg);
}

.section-muted {
  background: var(--muted);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.headline-mark {
  display: inline-block;
  color: #fff;
  text-shadow: 0 0 18px rgba(72, 215, 209, 0.28);
}

.accent-cyan {
  color: #1ab8c6;
  font-weight: 800;
}

.section-dark .accent-cyan,
.system-section .accent-cyan,
.cta-section .accent-cyan {
  color: #74ece2;
}

.accent-gold {
  color: #c7922f;
  font-weight: 800;
}

.section-dark .accent-gold,
.system-section .accent-gold,
.cta-section .accent-gold {
  color: #f1cf87;
}

.accent-strong {
  display: inline-block;
  padding: 0 0.16em;
  color: var(--ink);
  font-weight: 900;
  background: linear-gradient(180deg, rgba(223, 121, 110, 0), rgba(223, 121, 110, 0.2));
  border-radius: 4px;
}

.section-dark .accent-strong,
.system-section .accent-strong,
.cta-section .accent-strong {
  color: #fff2ea;
  background: linear-gradient(180deg, rgba(223, 121, 110, 0), rgba(223, 121, 110, 0.22));
}

.accent-route {
  display: inline-block;
  padding: 2px 8px;
  margin-right: 2px;
  border-radius: 999px;
  font-weight: 800;
  line-height: 1.45;
}

.accent-order {
  color: #14323d;
  background: rgba(72, 215, 209, 0.2);
}

.accent-free {
  color: #4b2318;
  background: rgba(223, 121, 110, 0.22);
}

.accent-balance {
  color: #4b3913;
  background: rgba(216, 180, 106, 0.26);
}

.section-dark .accent-order,
.system-section .accent-order {
  color: #c9fbf5;
  background: rgba(72, 215, 209, 0.18);
}

.section-dark .accent-free,
.system-section .accent-free {
  color: #ffd8cf;
  background: rgba(223, 121, 110, 0.16);
}

.section-dark .accent-balance,
.system-section .accent-balance {
  color: #ffe6b2;
  background: rgba(216, 180, 106, 0.18);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 900;
  text-wrap: balance;
}

h2 {
  color: var(--ink);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  text-wrap: balance;
}

.section-dark h2,
.section-dark h3 {
  color: var(--text);
}

h3 {
  color: var(--ink);
  font-size: 21px;
  font-weight: 800;
}

p {
  margin: 14px 0 0;
}

.hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(9, 11, 19, 0.95) 0%, rgba(9, 11, 19, 0.82) 42%, rgba(9, 11, 19, 0.3) 100%),
    linear-gradient(180deg, rgba(9, 11, 19, 0.12) 0%, rgba(9, 11, 19, 0.86) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 180px;
  background: linear-gradient(180deg, rgba(9, 11, 19, 0), #0f1220 85%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: end;
  gap: 48px;
  padding: 124px 0 84px;
}

.hero-copy {
  max-width: 760px;
}

.hero-lead {
  max-width: 720px;
  color: rgba(247, 249, 251, 0.84);
  font-size: 19px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
  line-height: 1.25;
  transition: transform 0.24s ease, border-color 0.24s ease, background 0.24s ease, box-shadow 0.24s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px) scale(1.01);
  outline: none;
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.22) 48%, transparent 100%);
  transform: translateX(-140%);
  transition: transform 0.45s ease;
}

.btn:hover::after,
.btn:focus-visible::after {
  transform: translateX(140%);
}

.btn-primary {
  color: #071015;
  background: linear-gradient(135deg, var(--cyan), #e4cc8b);
  box-shadow: 0 12px 32px rgba(72, 215, 209, 0.18);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 18px 42px rgba(72, 215, 209, 0.28);
}

.btn-secondary {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: rgba(72, 215, 209, 0.44);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
}

.hero-panel {
  position: relative;
  padding: 24px;
  background: rgba(15, 18, 32, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.hero-panel:hover {
  transform: translateY(-4px);
  border-color: rgba(72, 215, 209, 0.34);
  box-shadow: 0 28px 72px rgba(0, 0, 0, 0.34);
}

.panel-label {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 5px 9px;
  color: #071015;
  background: var(--gold);
  border-radius: 5px;
  font-size: 12px;
  font-weight: 800;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0 0 18px;
}

.hero-stats div {
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.06);
}

.hero-stats dt {
  color: rgba(247, 249, 251, 0.62);
  font-size: 12px;
}

.hero-stats dd {
  margin: 2px 0 0;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.hero-panel p {
  color: rgba(247, 249, 251, 0.76);
  font-size: 14px;
}

.quick-links {
  margin-top: -52px;
  position: relative;
  z-index: 10;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.quick-grid a {
  position: relative;
  overflow: hidden;
  min-height: 112px;
  padding: 18px;
  color: var(--text);
  background: linear-gradient(145deg, #151927, #1c2736);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.14);
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.quick-grid a::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(72, 215, 209, 0.14), transparent 55%);
  opacity: 0;
  transition: opacity 0.24s ease;
}

.quick-grid a:hover,
.quick-grid a:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(72, 215, 209, 0.52);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.22);
  outline: none;
}

.quick-grid a:hover::before,
.quick-grid a:focus-visible::before {
  opacity: 1;
}

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

.quick-grid span {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
}

.quick-grid strong {
  margin-top: 8px;
  color: rgba(247, 249, 251, 0.88);
  font-size: 15px;
  line-height: 1.45;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 460px;
  align-items: center;
  gap: 56px;
}

.split-reverse {
  grid-template-columns: minmax(0, 1fr) 500px;
}

.changelog-layout .section-copy {
  width: 100%;
}

.changelog-layout .section-copy h2,
.changelog-layout .section-copy > p {
  max-width: 900px;
}

.section-copy > p,
.section-head > p {
  color: var(--ink-soft);
  font-size: 17px;
}

.section-copy h2,
.section-head h2 {
  max-width: 820px;
}

.section-head {
  max-width: 840px;
  margin-bottom: 42px;
}

.media-card {
  margin: 0;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(24, 32, 48, 0.12);
  transition: transform 0.26s ease, box-shadow 0.26s ease, border-color 0.26s ease;
}

.media-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.35s ease;
}

.media-card figcaption {
  padding: 14px 16px 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.media-card:hover,
.media-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(72, 215, 209, 0.28);
  box-shadow: 0 28px 70px rgba(24, 32, 48, 0.16);
}

.media-card:hover img,
.media-card:focus-within img {
  transform: scale(1.04);
  filter: saturate(1.05);
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink);
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 12px;
  height: 12px;
  border: 3px solid var(--green);
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card {
  position: relative;
  overflow: hidden;
  min-height: 270px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  box-shadow: 0 18px 48px rgba(24, 32, 48, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s ease;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 32px;
  margin-bottom: 24px;
  color: var(--bg);
  background: var(--cyan);
  border-radius: 6px;
  font-weight: 900;
}

.feature-card p {
  color: var(--ink-soft);
  font-size: 15px;
}

.feature-card h3 {
  letter-spacing: 0;
}

.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(72, 215, 209, 0.22);
  box-shadow: 0 24px 56px rgba(24, 32, 48, 0.14);
}

.feature-card:hover::before,
.feature-card:focus-within::before {
  transform: scaleX(1);
}

.feature-card:hover .card-icon,
.feature-card:focus-within .card-icon {
  background: linear-gradient(135deg, var(--cyan), #f1d598);
}

.system-section {
  background: #101624;
  color: var(--text);
}

.system-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 56px;
}

.system-visual {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.system-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.system-copy h2 {
  color: var(--text);
}

.system-copy > p {
  color: rgba(247, 249, 251, 0.72);
}

.ability-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.ability-list div {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.06);
}

.ability-list h3 {
  color: var(--text);
  font-size: 18px;
}

.ability-list p {
  color: rgba(247, 249, 251, 0.72);
  font-size: 14px;
}

.guide-section {
  background:
    radial-gradient(circle at 20% 20%, rgba(72, 215, 209, 0.12), transparent 32%),
    linear-gradient(180deg, #0f1220, #111824);
}

.section-dark .section-head > p {
  color: rgba(247, 249, 251, 0.72);
}

.guide-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 18px;
}

.guide-tabs {
  display: grid;
  align-content: start;
  gap: 8px;
}

.guide-tab {
  min-height: 48px;
  padding: 12px 14px;
  color: rgba(247, 249, 251, 0.76);
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.guide-tab.is-active,
.guide-tab:hover,
.guide-tab:focus-visible {
  color: #fff;
  border-color: rgba(72, 215, 209, 0.58);
  background: rgba(72, 215, 209, 0.12);
  transform: translateX(4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.14);
  outline: none;
}

.guide-panels {
  min-height: 330px;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.guide-panel h3 {
  color: var(--text);
  font-size: 26px;
  line-height: 1.28;
}

.guide-panel p,
.guide-panel li {
  color: rgba(247, 249, 251, 0.78);
}

.guide-panel ol {
  margin: 22px 0 0;
  padding-left: 20px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery-item {
  transition: transform 0.26s ease, box-shadow 0.26s ease, border-color 0.26s ease;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 16px 44px rgba(24, 32, 48, 0.08);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.35s ease;
}

.gallery-item figcaption {
  min-height: 78px;
  padding: 14px 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}

.gallery-item:hover,
.gallery-item:focus-within {
  transform: translateY(-6px);
  border-color: rgba(72, 215, 209, 0.24);
  box-shadow: 0 24px 58px rgba(24, 32, 48, 0.14);
}

.gallery-item:hover img,
.gallery-item:focus-within img {
  transform: scale(1.05);
  filter: saturate(1.04);
}

.gallery-wide {
  grid-column: span 2;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.timeline div {
  padding: 18px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.timeline div:hover,
.timeline div:focus-within {
  transform: translateY(-4px);
  border-color: rgba(223, 121, 110, 0.28);
  box-shadow: 0 20px 48px rgba(24, 32, 48, 0.12);
}

.timeline time {
  display: block;
  margin-bottom: 6px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
}

.timeline h3 {
  font-size: 20px;
  line-height: 1.34;
}

.timeline p {
  color: var(--ink-soft);
  font-size: 15px;
}

.cta-section {
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(72, 215, 209, 0.16), rgba(216, 180, 106, 0.18)),
    #101624;
}

.cta-inner {
  max-width: 840px;
  text-align: center;
}

.cta-inner h2 {
  color: var(--text);
  margin: 0 auto;
}

.cta-inner p {
  color: rgba(247, 249, 251, 0.76);
  font-size: 17px;
}

.cta-inner .hero-actions {
  justify-content: center;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 14px 40px rgba(24, 32, 48, 0.06);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.faq-item summary {
  position: relative;
  padding: 18px 52px 18px 20px;
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  transition: color 0.2s ease, background 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 20px;
  width: 24px;
  height: 24px;
  color: var(--bg);
  font-size: 22px;
  line-height: 22px;
  text-align: center;
  transform: translateY(-50%);
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--ink-soft);
}

.faq-item:hover,
.faq-item:focus-within,
.faq-item[open] {
  transform: translateY(-3px);
  border-color: rgba(72, 215, 209, 0.24);
  box-shadow: 0 20px 50px rgba(24, 32, 48, 0.1);
}

.faq-item:hover summary,
.faq-item:focus-within summary,
.faq-item[open] summary {
  color: var(--bg);
  background: linear-gradient(180deg, rgba(72, 215, 209, 0.08), rgba(72, 215, 209, 0));
}

.faq-item:hover summary::after,
.faq-item:focus-within summary::after,
.faq-item[open] summary::after {
  color: var(--cyan);
}

.site-footer {
  color: rgba(247, 249, 251, 0.76);
  background: var(--bg-deep);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 42px 0 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-inner strong {
  color: #fff;
  font-size: 18px;
}

.footer-inner p {
  max-width: 640px;
  font-size: 14px;
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content: flex-end;
  gap: 10px;
}

.footer-inner nav a {
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  font-size: 14px;
}

.footer-note {
  padding: 18px 0 30px;
}

.footer-note p {
  margin: 0;
  color: rgba(247, 249, 251, 0.58);
  font-size: 13px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1020px) {
  .hero-inner,
  .split,
  .split-reverse,
  .system-layout {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    align-items: start;
  }

  .hero-panel {
    max-width: 520px;
  }

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

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

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

  .gallery-wide {
    grid-column: span 2;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .header-inner {
    min-height: 66px;
  }

  .brand img {
    width: 44px;
    height: 44px;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: fixed;
    inset: 66px 14px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: rgba(9, 11, 19, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    min-height: 44px;
    padding: 10px 12px;
  }

  .site-nav .nav-download {
    justify-content: center;
    text-align: center;
  }

  .section {
    padding: 66px 0;
  }

  .hero {
    min-height: auto;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(9, 11, 19, 0.76) 0%, rgba(9, 11, 19, 0.94) 60%, #0f1220 100%),
      linear-gradient(90deg, rgba(9, 11, 19, 0.84), rgba(9, 11, 19, 0.34));
  }

  .hero-inner {
    gap: 28px;
    padding: 92px 0 72px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .quick-links {
    margin-top: 0;
    background: var(--bg);
    padding-bottom: 14px;
  }

  .quick-grid,
  .feature-grid,
  .ability-list,
  .gallery-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .quick-grid a {
    min-height: 92px;
  }

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

  .gallery-wide {
    grid-column: auto;
  }

  .guide-layout {
    grid-template-columns: 1fr;
  }

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

  .guide-tab {
    text-align: center;
    min-height: 46px;
  }

  .guide-panels {
    padding: 20px;
  }

  .footer-inner {
    display: grid;
  }

  .footer-inner nav {
    justify-content: flex-start;
  }
}

@media (max-width: 430px) {
  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 28px;
  }

  .guide-tabs {
    grid-template-columns: 1fr;
  }

  .brand {
    min-width: 0;
    gap: 10px;
  }

  .brand small {
    display: none;
  }
}