:root {
  color-scheme: dark;
  --bg: #05060a;
  --bg-soft: #080b11;
  --panel: rgba(13, 17, 27, 0.78);
  --panel-strong: rgba(17, 22, 33, 0.92);
  --border: rgba(255, 255, 255, 0.11);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #f5f7fb;
  --muted: #a8b0c2;
  --muted-2: #747f92;
  --cyan: #6ee7ff;
  --green: #7cf4bd;
  --violet: #b6a2ff;
  --rose: #ff9fc4;
  --shadow: 0 22px 80px rgba(0, 0, 0, 0.42);
  --radius: 8px;
  --max-width: 1180px;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Microsoft YaHei",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 20% 10%, rgba(110, 231, 255, 0.12), transparent 28rem),
    radial-gradient(circle at 80% 0%, rgba(124, 244, 189, 0.1), transparent 26rem),
    linear-gradient(180deg, #05060a 0%, #07090e 44%, #05060a 100%);
  color: var(--text);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 72%);
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(180deg, rgba(5, 6, 10, 0) 0%, rgba(5, 6, 10, 0.78) 82%),
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.05), transparent 18rem);
}

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

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

.page-shell {
  overflow: hidden;
}

.section-wrap {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 14px;
  z-index: 50;
  width: min(var(--max-width), calc(100% - 40px));
  min-height: 66px;
  margin: 14px auto 0;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(8, 11, 17, 0.72);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 700;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(110, 231, 255, 0.2), rgba(124, 244, 189, 0.16)),
    rgba(255, 255, 255, 0.05);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.brand-name {
  white-space: nowrap;
}

.nav-links {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.nav-links a {
  padding: 9px 14px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 14px;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  display: block;
  margin: 4px auto;
  border-radius: 999px;
  background: currentColor;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  border-color: rgba(255, 255, 255, 0.22);
  background:
    linear-gradient(135deg, rgba(110, 231, 255, 0.95), rgba(124, 244, 189, 0.86)),
    #fff;
  color: #071018;
  box-shadow: 0 14px 36px rgba(110, 231, 255, 0.18);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 18px 48px rgba(124, 244, 189, 0.22);
}

.button-secondary {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.08);
}

.button-small {
  min-height: 42px;
  padding: 0 16px;
  font-size: 14px;
}

.button-large {
  min-height: 50px;
  padding: 0 22px;
  font-size: 15px;
}

.hero {
  position: relative;
  min-height: calc(100vh - 90px);
  padding: 92px 0 72px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: 58px;
}

.hero-glow {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(12px);
  opacity: 0.7;
}

.hero-glow-a {
  width: 420px;
  height: 420px;
  left: -210px;
  top: 90px;
  background: radial-gradient(circle, rgba(110, 231, 255, 0.18), transparent 68%);
}

.hero-glow-b {
  width: 460px;
  height: 460px;
  right: -190px;
  top: 170px;
  background: radial-gradient(circle, rgba(255, 159, 196, 0.14), transparent 68%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 660px;
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 610px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-metrics {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.hero-metrics div {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.hero-metrics strong,
.hero-metrics span {
  display: block;
}

.hero-metrics strong {
  margin-bottom: 6px;
  font-size: 18px;
}

.hero-metrics span {
  color: var(--muted-2);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  min-width: 0;
}

.visual-ring {
  position: absolute;
  inset: 5% 7% auto auto;
  width: 72%;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(110, 231, 255, 0.1), transparent 56%),
    conic-gradient(from 160deg, rgba(110, 231, 255, 0.28), rgba(124, 244, 189, 0.1), transparent 52%);
  filter: blur(0.1px);
}

.launcher-window {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025)),
    rgba(9, 12, 18, 0.92);
  box-shadow: var(--shadow);
}

.launcher-window::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(circle at 18% 0%, rgba(110, 231, 255, 0.14), transparent 24rem),
    radial-gradient(circle at 90% 16%, rgba(182, 162, 255, 0.13), transparent 18rem);
}

.window-bar {
  position: relative;
  z-index: 1;
  height: 48px;
  padding: 0 16px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.035);
}

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

.window-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
}

.window-dots span:nth-child(1) {
  background: #ff9a9a;
}

.window-dots span:nth-child(2) {
  background: #ffd36e;
}

.window-dots span:nth-child(3) {
  background: #7cf4bd;
}

.window-title {
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.window-status {
  padding: 7px 10px;
  border: 1px solid rgba(124, 244, 189, 0.22);
  border-radius: 999px;
  background: rgba(124, 244, 189, 0.08);
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.launcher-content {
  position: relative;
  z-index: 1;
  min-height: 430px;
  padding: 18px;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
}

.launcher-sidebar {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.18);
}

.sidebar-pill {
  min-height: 38px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  border-radius: 7px;
  color: var(--muted-2);
  font-size: 13px;
}

.sidebar-pill.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.launcher-main {
  min-width: 0;
  display: grid;
  grid-template-rows: 1fr auto auto;
  gap: 14px;
}

.service-hero-card {
  position: relative;
  overflow: hidden;
  min-height: 196px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(110, 231, 255, 0.18), rgba(255, 159, 196, 0.08)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
}

.service-hero-card::after {
  position: absolute;
  right: -34px;
  bottom: -52px;
  width: 210px;
  height: 210px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  content: "";
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent 55%),
    conic-gradient(from 90deg, rgba(110, 231, 255, 0.28), rgba(124, 244, 189, 0.12), transparent);
}

.service-hero-card span,
.service-hero-card p {
  color: rgba(245, 247, 251, 0.72);
}

.service-hero-card h2 {
  position: relative;
  z-index: 1;
  margin: 16px 0 12px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.1;
  letter-spacing: 0;
}

.service-hero-card p {
  position: relative;
  z-index: 1;
  margin-bottom: 22px;
}

.service-progress {
  position: relative;
  z-index: 1;
  overflow: hidden;
  width: min(280px, 72%);
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.service-progress i {
  display: block;
  width: 74%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--green));
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.mini-card {
  min-height: 100px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

.mini-card span,
.mini-card strong {
  display: block;
}

.mini-card span {
  margin-bottom: 20px;
  color: var(--muted-2);
  font-size: 13px;
}

.mini-card strong {
  font-size: 17px;
}

.mini-card.cyan {
  box-shadow: inset 0 1px 0 rgba(110, 231, 255, 0.18);
}

.mini-card.green {
  box-shadow: inset 0 1px 0 rgba(124, 244, 189, 0.18);
}

.mini-card.violet {
  box-shadow: inset 0 1px 0 rgba(182, 162, 255, 0.18);
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.18);
}

.status-strip div {
  padding: 14px;
}

.status-strip div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.status-strip span,
.status-strip strong {
  display: block;
}

.status-strip span {
  margin-bottom: 6px;
  color: var(--muted-2);
  font-size: 12px;
}

.status-strip strong {
  font-size: 14px;
}

.section-block {
  padding: 82px 0;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 34px;
}

.section-heading h2,
.download-copy h2,
.legal-content h1 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4.5vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading p,
.download-copy p,
.legal-content p,
.legal-content li {
  color: var(--muted);
  line-height: 1.8;
}

.feature-grid,
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-card,
.step-card,
.download-card,
.qr-panel,
.faq-list details,
.legal-content {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.025)),
    rgba(12, 16, 24, 0.74);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
}

.feature-card {
  min-height: 250px;
  padding: 22px;
}

.feature-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(110, 231, 255, 0.2);
  border-radius: var(--radius);
  background: rgba(110, 231, 255, 0.08);
  color: var(--cyan);
  font-weight: 800;
  font-size: 13px;
}

.feature-card h3,
.step-card h3,
.download-card h3,
.qr-panel h3,
.footer-links h3,
.legal-content h2 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: 0;
}

.feature-card p,
.step-card p,
.download-card p,
.qr-panel p,
.footer-brand p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.flow-section {
  position: relative;
}

.steps-grid {
  counter-reset: step;
}

.step-card {
  min-height: 210px;
  padding: 22px;
}

.step-card span {
  width: 38px;
  height: 38px;
  margin-bottom: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(124, 244, 189, 0.95), rgba(110, 231, 255, 0.8));
  color: #061016;
  font-weight: 900;
}

.download-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 430px);
  align-items: center;
  gap: 32px;
}

.download-copy p {
  max-width: 650px;
  margin-bottom: 28px;
}

.download-card {
  padding: 24px;
}

.download-card-top {
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.platform-badge,
.version-badge {
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

.version-badge {
  color: var(--green);
  border-color: rgba(124, 244, 189, 0.2);
  background: rgba(124, 244, 189, 0.07);
}

.download-card ul {
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  list-style: none;
}

.download-card li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
}

.download-card li::before {
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  content: "";
  background: var(--green);
  box-shadow: 0 0 14px rgba(124, 244, 189, 0.7);
}

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

.faq-list details {
  padding: 0 20px;
}

.faq-list summary {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  content: "+";
}

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

.faq-list details p {
  margin: -4px 0 20px;
  color: var(--muted);
  line-height: 1.75;
}

.site-footer {
  margin-top: 30px;
  padding: 58px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.24);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px 260px;
  gap: 42px;
  align-items: start;
}

.footer-brand p {
  max-width: 480px;
  margin-top: 18px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links h3,
.qr-panel h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.footer-links a {
  color: var(--muted);
  line-height: 1.5;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
}

.qr-panel {
  padding: 18px;
}

.qr-panel img {
  width: 146px;
  height: 146px;
  margin: 14px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.qr-panel p {
  font-size: 13px;
}

.footer-bottom {
  margin-top: 42px;
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted-2);
  font-size: 13px;
}

.legal-main {
  padding: 78px 0;
}

.legal-content {
  padding: clamp(24px, 5vw, 48px);
}

.legal-content h1 {
  max-width: 840px;
}

.legal-content h2 {
  margin-top: 34px;
}

.legal-content ul,
.legal-content ol {
  padding-left: 22px;
}

.legal-content .back-link {
  display: inline-flex;
  margin-bottom: 26px;
  color: var(--green);
  font-weight: 700;
}

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

.contact-list li {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto auto 1fr;
  }

  .nav-toggle {
    display: block;
    justify-self: end;
    grid-column: 3;
  }

  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 10px);
    padding: 10px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: rgba(8, 11, 17, 0.96);
    backdrop-filter: blur(18px);
  }

  .site-header.nav-open .nav-links {
    display: flex;
  }

  .nav-links a {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .header-download {
    grid-column: 2;
    grid-row: 1;
  }

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

  .hero {
    min-height: auto;
    padding-top: 72px;
    gap: 48px;
  }

  .hero-copy {
    text-align: left;
  }

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

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

  .qr-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  .section-wrap,
  .site-header {
    width: min(100% - 28px, var(--max-width));
  }

  .site-header {
    top: 10px;
    min-height: 60px;
    gap: 10px;
  }

  .brand-name {
    max-width: 128px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .header-download {
    min-height: 38px;
    padding: 0 12px;
  }

  .hero {
    padding: 58px 0 48px;
  }

  h1 {
    font-size: 42px;
  }

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

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

  .hero-metrics,
  .feature-grid,
  .steps-grid,
  .mini-grid,
  .status-strip {
    grid-template-columns: 1fr;
  }

  .launcher-content {
    grid-template-columns: 1fr;
  }

  .launcher-sidebar {
    flex-direction: row;
    overflow-x: auto;
  }

  .sidebar-pill {
    min-width: 64px;
  }

  .status-strip div + div {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .window-status {
    display: none;
  }

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

  .section-block {
    padding: 58px 0;
  }

  .download-section {
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .qr-panel img {
    width: 132px;
    height: 132px;
  }
}

@media (max-width: 420px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .nav-toggle {
    grid-column: 2;
  }

  .header-download {
    display: none;
  }

  h1 {
    font-size: 36px;
  }

  .launcher-content {
    padding: 12px;
  }

  .service-hero-card {
    padding: 18px;
  }
}