:root {
  --bg: #0f1314;
  --surface: #191c1d;
  --surface-dark: #0c0f10;
  --text: #f0f0ef;
  --muted: #b1b7b8;
  --line: #343b3c;
  --line-soft: rgba(87, 98, 99, .44);
  --cyan: #00efff;
  --shell: min(1280px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--text); background: radial-gradient(circle at 50% 24%, rgba(0, 242, 255, .06), transparent 32rem), var(--bg); font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.55; }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
.shell { width: var(--shell); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 10; height: 52px; border-bottom: 1px solid var(--line); background: rgba(15, 19, 20, .88); backdrop-filter: blur(24px); }
.nav { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { font-size: 22px; font-weight: 800; letter-spacing: -.04em; }
.nav-links { display: flex; gap: 30px; color: #d0d2d2; font: 500 12px/1 "JetBrains Mono", monospace; letter-spacing: .08em; }
.nav-links a:hover, .footer-links a:hover { color: var(--cyan); }
.launch-button { border: 0; padding: 11px 20px; color: #061012; background: var(--cyan); font: 700 12px/1 "JetBrains Mono", monospace; letter-spacing: .08em; }

.hero { min-height: 740px; display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 42px; padding: 120px 0 92px; }
.hero-copy { padding-top: 68px; }
.release-pill { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border: 1px solid rgba(0, 239, 255, .55); border-radius: 999px; color: var(--cyan); background: rgba(0, 239, 255, .08); font: 500 11px/1 "JetBrains Mono", monospace; letter-spacing: .11em; }
.release-pill span { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.hero h1 { margin: 24px 0 23px; font-size: clamp(34px, 5.3vw, 64px); line-height: 1.08; letter-spacing: -.06em; }
.hero h1 strong { color: var(--cyan); font-weight: 800; }
.hero-text { max-width: 520px; margin: 0 0 27px; color: var(--muted); font-size: 17px; }
.download-actions { display: flex; gap: 10px; }
.download-button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 4px; font: 700 12px/1 "JetBrains Mono", monospace; letter-spacing: .06em; }
.download-button.primary { border: 1px solid var(--cyan); color: #061012; background: var(--cyan); }
.download-button.secondary { border: 1px solid #2585a1; color: var(--text); background: rgba(14, 20, 21, .8); }
.download-button:hover { box-shadow: 0 0 18px rgba(0, 239, 255, .25); }
.download-glyph, .store-glyph { margin-right: 8px; font-size: 15px; vertical-align: -1px; }
.stats-row { display: flex; align-items: center; gap: 15px; max-width: 410px; margin-top: 29px; padding-top: 21px; border-top: 1px solid var(--line-soft); }
.stats-row div { display: flex; flex-direction: column; }
.stats-row b { font: 700 23px/1.2 "JetBrains Mono", monospace; }
.stats-row span { color: #aeb5b5; font: 500 12px/1.35 "JetBrains Mono", monospace; }
.stats-row em { color: var(--cyan); font-style: normal; font-size: 12px; }
.stats-row i { width: 1px; height: 34px; background: var(--line-soft); }
.phone-stage { display: flex; justify-content: end; align-items: center; }
.phone-stage img { width: min(420px, 100%); aspect-ratio: 300 / 590; object-fit: cover; border-radius: 28px; filter: drop-shadow(0 20px 34px rgba(0, 0, 0, .34)); }

.features { padding: 92px 0 102px; }
.section-heading { max-width: 520px; margin: 0 auto 42px; text-align: center; }
.section-heading h2 { margin: 0 0 13px; font-size: 40px; line-height: 1.2; }
.section-heading p { margin: 0; color: #aeb5b5; font-size: 16px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.feature-card { min-height: 222px; padding: 28px; border: 1px solid var(--line); border-radius: 5px; background: rgba(27, 30, 30, .83); }
.feature-card:hover { border-color: #596869; }
.feature-icon { width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 16px; border: 1px solid rgba(0, 239, 255, .6); border-radius: 8px; color: var(--cyan); font-size: 22px; }
.feature-card h3 { margin: 0 0 12px; font-size: 22px; line-height: 1.25; }
.feature-card p { margin: 0; color: #b1b7b7; font-size: 14px; line-height: 1.6; }

.download-section { padding: 62px 0 78px; border-top: 1px solid rgba(63, 72, 73, .34); }
.download-panel { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 36px; padding: 43px 31px; overflow: hidden; border: 1px solid var(--line); border-radius: 9px; background: rgba(27, 30, 30, .86); }
.download-panel::before { content: ""; position: absolute; width: 240px; height: 240px; left: -110px; bottom: -120px; border-radius: 50%; background: rgba(0, 239, 255, .08); filter: blur(52px); }
.download-copy { position: relative; z-index: 1; }
.download-copy h2 { margin: 0 0 17px; font-size: 40px; line-height: 1.2; }
.download-copy > p { margin: 0; color: var(--muted); font-size: 18px; }
.download-copy ul { display: grid; gap: 10px; margin: 27px 0 0; padding: 0; list-style: none; color: #b9c0c0; font: 500 13px/1.3 "JetBrains Mono", monospace; }
.download-copy li span { display: inline-grid; width: 15px; height: 15px; place-items: center; margin-right: 8px; border: 1px solid var(--cyan); border-radius: 50%; color: var(--cyan); font: 700 10px/1 Arial, sans-serif; }
.qr-card { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 14px; border: 1px solid #4b5253; border-radius: 5px; background: #0b0d0e; }
.qr-frame { width: 138px; height: 138px; padding: 5px; border-radius: 3px; background: #fff; }
.qr-frame img { width: 100%; height: 100%; object-fit: cover; }
.qr-card > span { color: #c5caca; font: 500 12px/1 "JetBrains Mono", monospace; letter-spacing: .05em; }

.site-footer { border-top: 1px solid var(--line); background: var(--surface-dark); }
.footer-inner { min-height: 85px; display: grid; grid-template-columns: 1fr 1.7fr 1.4fr; align-items: center; gap: 20px; }
.footer-inner p { margin: 0; color: #d0d4d4; font-size: 14px; text-align: center; }
.footer-links { display: flex; justify-content: end; gap: 16px; color: #d0d4d4; font-size: 14px; }

@media (max-width: 700px) {
  :root { --shell: min(100% - 30px, 520px); }
  .site-header { height: 54px; }
  .nav-links { display: none; }
  .launch-button { padding-inline: 13px; }
  .hero { min-height: 0; grid-template-columns: 1fr; gap: 36px; padding: 70px 0 58px; }
  .hero-copy { padding-top: 0; }
  .hero h1 { font-size: clamp(36px, 10vw, 50px); }
  .hero-text { font-size: 13px; }
  .download-actions { flex-wrap: wrap; }
  .download-button { flex: 1; min-width: 150px; }
  .phone-stage { justify-content: center; }
  .phone-stage img { width: min(270px, 80vw); }
  .features { padding: 68px 0 72px; }
  .section-heading h2 { font-size: 32px; }
  .section-heading p { font-size: 14px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card h3 { font-size: 21px; }
  .download-copy h2 { font-size: 32px; }
  .download-copy > p { font-size: 16px; }
  .download-panel { flex-direction: column; align-items: stretch; padding: 28px 22px; }
  .qr-card { align-self: center; }
  .footer-inner { grid-template-columns: 1fr; padding: 21px 0; text-align: center; }
  .footer-inner p { order: 3; }
  .footer-links { justify-content: center; flex-wrap: wrap; }
}