:root {
  color-scheme: dark;
  --ink: #f5f8ff;
  --muted: #a8b4ca;
  --faint: #70809c;
  --line: rgba(169, 197, 255, 0.14);
  --line-strong: rgba(111, 214, 255, 0.3);
  --surface: rgba(15, 24, 48, 0.72);
  --surface-strong: rgba(18, 32, 65, 0.92);
  --blue: #54b9ff;
  --cyan: #63f3ee;
  --navy: #060b18;
  --max: 1120px;
  --shadow: 0 24px 80px rgba(0, 21, 73, 0.4);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 76% 12%, rgba(31, 135, 255, 0.19), transparent 31rem),
    radial-gradient(circle at 18% 36%, rgba(49, 239, 232, 0.08), transparent 25rem),
    linear-gradient(145deg, #080e20 0%, var(--navy) 46%, #030610 100%);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

a { color: inherit; }

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 11, 24, 0.72);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(calc(100% - 40px), var(--max));
  min-height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand img { width: 38px; height: 38px; border-radius: 10px; }

.nav-links { display: flex; align-items: center; gap: 8px; }

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 9px 13px;
  border-radius: 10px;
  font-size: 0.925rem;
  font-weight: 600;
}

.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); background: rgba(255,255,255,.06); }

main { position: relative; z-index: 1; }

.hero {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  min-height: 610px;
  padding: 92px 0 74px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(330px, .85fr);
  align-items: center;
  gap: clamp(40px, 7vw, 100px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1, h2, h3 { margin-top: 0; line-height: 1.12; letter-spacing: -.035em; }

h1 { margin-bottom: 24px; max-width: 760px; font-size: clamp(3.1rem, 6.8vw, 6.3rem); }

.gradient-text {
  background: linear-gradient(110deg, #fff 12%, #a9dcff 56%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy { max-width: 670px; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.28rem); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 750;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.button:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.button.primary { color: #04101e; border-color: transparent; background: linear-gradient(120deg, var(--blue), var(--cyan)); box-shadow: 0 10px 34px rgba(59, 193, 255, .24); }

.app-visual { position: relative; display: grid; place-items: center; min-height: 430px; }
.app-visual::before { content: ""; position: absolute; width: 86%; aspect-ratio: 1; border-radius: 50%; background: rgba(24, 123, 255, .18); filter: blur(54px); }
.app-icon { position: relative; width: min(100%, 390px); height: auto; filter: drop-shadow(0 35px 55px rgba(0, 22, 95, .58)); transform: rotate(1.5deg); }
.shortcut { position: absolute; right: 3%; bottom: 9%; padding: 12px 15px; border: 1px solid rgba(255,255,255,.2); border-radius: 14px; color: #eaf7ff; background: rgba(9,17,36,.78); box-shadow: var(--shadow); backdrop-filter: blur(12px); font-size: .82rem; font-weight: 700; }
.shortcut span { display: inline-grid; place-items: center; min-width: 25px; height: 25px; margin-left: 4px; border: 1px solid rgba(255,255,255,.17); border-bottom-color: rgba(255,255,255,.35); border-radius: 6px; background: rgba(255,255,255,.07); }

.section { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 84px 0; }
.section-heading { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: end; margin-bottom: 36px; }
.section-heading h2 { margin-bottom: 0; font-size: clamp(2rem, 4vw, 3.4rem); }
.section-heading p { margin: 0; color: var(--muted); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { min-height: 210px; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(155deg, rgba(25,43,82,.78), rgba(9,16,35,.76)); box-shadow: inset 0 1px rgba(255,255,255,.04); }
.card-number { display: block; margin-bottom: 48px; color: var(--cyan); font: 700 .78rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.card h3 { margin-bottom: 10px; font-size: 1.25rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }

.notice { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; padding: 34px 38px; border: 1px solid var(--line-strong); border-radius: 22px; background: linear-gradient(120deg, rgba(21,85,159,.29), rgba(21,194,199,.08)); }
.notice h2 { margin-bottom: 8px; font-size: clamp(1.7rem, 3vw, 2.5rem); }
.notice p { margin: 0; max-width: 720px; color: var(--muted); }

.page-intro { width: min(calc(100% - 40px), 850px); margin: 0 auto; padding: 88px 0 45px; }
.page-intro h1 { font-size: clamp(2.8rem, 6vw, 5rem); }
.page-intro .lede { max-width: 700px; color: var(--muted); font-size: 1.18rem; }
.meta { margin-top: 20px; color: var(--faint); font-size: .88rem; }

.content { width: min(calc(100% - 40px), 850px); margin: 0 auto; padding: 10px 0 100px; }
.content-section { padding: 30px 0; border-top: 1px solid var(--line); }
.content-section h2 { margin-bottom: 15px; font-size: clamp(1.45rem, 3vw, 2rem); }
.content-section p, .content-section li { color: var(--muted); }
.content-section p:last-child { margin-bottom: 0; }
.content-section ul, .content-section ol { padding-left: 1.3rem; }
.content-section li + li { margin-top: 9px; }
.content-section a { color: #9cddff; text-underline-offset: 3px; }
.faq-title { display: flex; align-items: baseline; gap: 12px; }
.faq-title span { color: var(--cyan); font: 700 .76rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.contact-panel { margin-top: 28px; padding: 30px; border: 1px solid var(--line-strong); border-radius: 20px; background: var(--surface); }
.contact-panel h2 { margin-bottom: 10px; }
.contact-panel p { margin-top: 0; color: var(--muted); }

.download-panel { text-align: center; padding-top: 44px; }
.download-panel .app-icon { width: 150px; transform: none; }
.download-panel h1 { margin: 30px auto 18px; font-size: clamp(2.5rem, 6vw, 4.5rem); }
.download-panel .lede { margin-inline: auto; }
.status-pill { display: inline-flex; align-items: center; gap: 9px; margin-top: 20px; padding: 8px 13px; border: 1px solid var(--line-strong); border-radius: 999px; color: #bceeff; background: rgba(45, 146, 219, .1); font-size: .84rem; font-weight: 700; }
.status-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }

.site-footer { position: relative; z-index: 1; border-top: 1px solid var(--line); }
.footer-inner { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 32px 0 44px; display: flex; justify-content: space-between; gap: 24px; color: var(--faint); font-size: .86rem; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--ink); }

@media (max-width: 820px) {
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 68px; text-align: center; }
  .hero-copy { margin-inline: auto; }
  .actions { justify-content: center; }
  .app-visual { min-height: 350px; }
  .app-icon { width: min(72vw, 330px); }
  .shortcut { right: 12%; }
  .section-heading { grid-template-columns: 1fr; gap: 14px; }
  .feature-grid { grid-template-columns: 1fr; }
  .card { min-height: 0; }
  .card-number { margin-bottom: 30px; }
}

@media (max-width: 560px) {
  .nav { min-height: 68px; width: min(calc(100% - 28px), var(--max)); }
  .brand span { display: none; }
  .brand img { width: 36px; height: 36px; }
  .nav-links a { padding: 8px 9px; font-size: .86rem; }
  .hero, .section, .page-intro, .content, .footer-inner { width: min(calc(100% - 28px), var(--max)); }
  .hero { padding-top: 54px; }
  h1 { font-size: clamp(2.7rem, 14vw, 4rem); }
  .app-visual { min-height: 300px; }
  .notice { grid-template-columns: 1fr; padding: 28px; }
  .notice .button { width: 100%; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}