:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --accent: #0a84ff;
  --accent-strong: #0071e3;
  --card: #ffffff;
  --line: rgba(0, 0, 0, 0.08);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
a { color: var(--accent-strong); text-decoration: none; }
img { max-width: 100%; display: block; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 700; font-size: 17px; }
.brand-mark { width: 20px; height: 20px; fill: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 14px; }
.nav-links a { color: var(--ink-soft); font-weight: 500; }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  background: var(--accent-strong);
  color: #fff !important;
  padding: 7px 16px;
  border-radius: 980px;
  font-weight: 600;
}
.nav-cta:hover { background: #0077ed; }

/* Hero */
.hero {
  background:
    radial-gradient(900px 480px at 20% -10%, rgba(10, 132, 255, 0.16), transparent 60%),
    radial-gradient(800px 420px at 85% 0%, rgba(94, 92, 230, 0.12), transparent 55%),
    #0d0d12;
  color: #f5f5f7;
  padding: 96px 24px 120px;
  text-align: center;
}
.hero-inner { max-width: 820px; margin: 0 auto; }
.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 980px;
  background: rgba(10, 132, 255, 0.14);
  border: 1px solid rgba(10, 132, 255, 0.35);
  color: #7cc0ff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
}
.hero h1 { font-size: clamp(38px, 6vw, 64px); line-height: 1.06; letter-spacing: -0.02em; margin: 22px 0 18px; font-weight: 800; }
.hero .accent { color: #40a9ff; }
.lede { font-size: clamp(16px, 2vw, 19px); color: #a1a1a8; max-width: 620px; margin: 0 auto 34px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.12s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent-strong); color: #fff; box-shadow: 0 8px 24px rgba(10, 132, 255, 0.35); }
.btn-primary:hover { background: #0077ed; }
.btn-ghost { color: #f5f5f7; border: 1px solid rgba(255, 255, 255, 0.25); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }

/* Menu-bar mock */
.menubar-mock { margin: 64px auto 0; max-width: 680px; text-align: left; }
.menubar {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #1c1c22;
  border: 1px solid #2c2c34;
  border-radius: 10px;
  padding: 8px 18px;
  font-size: 13px;
  color: #d6d6de;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
}
.mb-icon { width: 16px; height: 16px; fill: currentColor; flex-shrink: 0; }
.mb-icon.apple { width: 15px; height: 15px; }
.menu-app {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  color: #f5f5f7;
}
.menu-app .mb-icon { color: #0a84ff; }
.menu-spacer { flex: 1; }
.battery-icon { width: 21px; height: 13px; }
.battery-pct { font-size: 12px; color: #d6d6de; }
.clock { font-size: 12.5px; color: #d6d6de; font-variant-numeric: tabular-nums; white-space: nowrap; }
.popover {
  margin: 12px auto 0;
  width: 340px;
  background: #1c1c22;
  border: 1px solid #2c2c34;
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}
.popover-head { display: flex; justify-content: space-between; align-items: center; font-size: 13px; font-weight: 700; color: #f5f5f7; padding: 2px 2px 10px; }
.pill { font-size: 11px; font-weight: 600; color: #7cc0ff; background: rgba(10, 132, 255, 0.14); padding: 3px 9px; border-radius: 980px; }
.pop-row { display: flex; align-items: center; gap: 10px; padding: 9px 2px; border-top: 1px solid #2a2a33; }
.pop-row svg { width: 18px; height: 18px; fill: #40a9ff; flex-shrink: 0; }
.pop-meta { display: flex; flex: 1; justify-content: space-between; align-items: center; gap: 10px; font-size: 12px; }
.pop-meta span { color: #d7d7df; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pop-meta i { color: #8e8e98; font-style: normal; }

/* Sections */
.section { padding: 96px 24px; }
.container { max-width: 1080px; margin: 0 auto; }
.section-title { font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.02em; margin: 0 0 10px; text-align: center; font-weight: 800; }
.section-sub { color: var(--ink-soft); text-align: center; font-size: 17px; margin: 0 0 52px; }

/* Feature grid */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.04);
  transition: transform 0.18s ease, box-shadow 0.25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card svg { width: 30px; height: 30px; fill: var(--accent); margin-bottom: 16px; }
.card h3 { font-size: 18px; margin: 0 0 8px; }
.card p { color: var(--ink-soft); font-size: 14.5px; margin: 0; }

/* Screenshots */
.screenshots { background: var(--bg-soft); }
.shot { margin: 0 0 84px; }
.shot:last-child { margin-bottom: 0; }
.shot-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: #0d0d12;
}
.shot-frame img { width: 100%; height: auto; }
.shot figcaption { max-width: 640px; margin: 22px auto 0; text-align: center; }
.shot h3 { font-size: 22px; margin: 0 0 6px; }
.shot p { color: var(--ink-soft); margin: 0; font-size: 15px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; }
.step { text-align: center; padding: 30px 20px; border-radius: var(--radius); background: var(--bg-soft); }
.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: 800; font-size: 18px;
  margin-bottom: 14px;
}
.step h3 { margin: 0 0 8px; font-size: 18px; }
.step p { color: var(--ink-soft); font-size: 14.5px; margin: 0; }

/* Note */
.note { padding-top: 40px; }
.note-box {
  background: linear-gradient(135deg, rgba(10, 132, 255, 0.1), rgba(94, 92, 230, 0.08));
  border: 1px solid rgba(10, 132, 255, 0.25);
  border-radius: 22px;
  padding: 44px 40px;
  text-align: center;
}
.note-box h3 { font-size: 24px; margin: 0 0 10px; }
.note-box p { max-width: 620px; margin: 0 auto 24px; color: var(--ink-soft); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 26px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand.small { font-size: 14px; }
.footer-links { display: flex; align-items: center; gap: 18px; font-size: 13px; color: var(--ink-soft); }
.footer-links a { color: var(--ink-soft); }
.footer-links a:hover { color: var(--ink); }

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .hero { padding: 70px 20px 90px; }
  .section { padding: 70px 20px; }
  .popover { width: 100%; }
}