:root {
  --bg: #0f1113;
  --bg-deep: #181b2e;
  --card: #171a1f;
  --card-elevated: #1d2228;
  --border: #2f3741;
  --text: #f3f2f1;
  --text-muted: #c4c9cf;
  --accent: #0078d4;
  --accent-soft: rgba(0, 120, 212, 0.16);
  --danger: #d13438;
  --radius: 16px;
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(15, 17, 19, 0.85);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 32px; height: 32px; border-radius: 8px; }
.brand-name { font-weight: 700; font-size: 1.15rem; letter-spacing: 0.2px; }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--text-muted); font-size: 0.95rem; transition: color 0.2s; }
.nav a:hover { color: var(--text); }

/* Hero */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(0, 120, 212, 0.22), transparent 60%),
    linear-gradient(180deg, var(--bg-deep), var(--bg) 70%);
  padding: 84px 0 72px;
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -0.5px;
}
.lede { font-size: 1.15rem; color: var(--text-muted); margin: 0 0 28px; max-width: 36ch; }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }

.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #1086e6; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); }

.hero-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.hero-points li { position: relative; padding-left: 22px; }
.hero-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* QR */
.hero-qr { display: flex; justify-content: center; }
.qr-card {
  background: var(--card-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  width: 100%;
  max-width: 280px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.qr-card.small { padding: 18px; }
.qr-title { margin: 0 0 16px; font-weight: 600; font-size: 1.05rem; }
.qr-help { margin: 16px 0 0; font-size: 0.85rem; color: var(--text-muted); }

.qr-placeholder {
  aspect-ratio: 1 / 1;
  width: 100%;
  border-radius: 12px;
  background:
    repeating-linear-gradient(45deg, #ffffff 0 14px, #e9eef5 14px 28px);
  color: #1a2030;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--accent);
}
.qr-placeholder-label { font-weight: 800; letter-spacing: 3px; font-size: 1.1rem; }
.qr-placeholder-sub { font-size: 0.8rem; opacity: 0.7; margin-top: 4px; text-transform: uppercase; letter-spacing: 1px; }

/* Sections */
.section { padding: 76px 0; }
.section-alt { background: var(--bg-deep); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 10px; text-align: center; letter-spacing: -0.4px; }
.section-sub { text-align: center; color: var(--text-muted); margin: 0 auto 44px; max-width: 52ch; }

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.18s, border-color 0.2s;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.feature-icon { font-size: 1.8rem; margin-bottom: 12px; }
.feature-card h3 { margin: 0 0 8px; font-size: 1.15rem; }
.feature-card p { margin: 0; color: var(--text-muted); font-size: 0.96rem; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 14px;
}
.step h3 { margin: 0 0 8px; font-size: 1.1rem; }
.step p { margin: 0; color: var(--text-muted); font-size: 0.95rem; }

/* Download */
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.download-copy .section-title,
.download-copy .section-sub { text-align: left; margin-left: 0; }
.store-badges { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-weight: 600;
  background: var(--card);
  transition: border-color 0.2s, background 0.2s;
}
.store-badge:hover { border-color: var(--accent); background: var(--card-elevated); }
.download-qr { display: flex; justify-content: center; }
.qr-pair { display: flex; gap: 18px; }

/* Footer */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-tag { color: var(--text-muted); margin: 4px 0 0; }
.footer-copy { color: var(--text-muted); font-size: 0.85rem; margin: 8px 0 0; }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-qr { justify-content: flex-start; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .download-copy .section-title, .download-copy .section-sub { text-align: center; margin-left: auto; }
  .store-badges { justify-content: center; }
}
@media (max-width: 560px) {
  .nav { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .section { padding: 56px 0; }
}