:root {
  --bg: #fbfbfd;
  --bg-alt: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --text-soft: #6e6e73;
  --text-faint: #86868b;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --border: rgba(0, 0, 0, 0.08);
  --kbd-bg: #ffffff;
  --kbd-border: #d2d2d7;
  --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-float: 0 30px 60px -20px rgba(0, 0, 0, 0.28), 0 12px 24px -12px rgba(0, 0, 0, 0.14);
  --radius: 18px;
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Inter", "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 59px; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
}

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

a { color: var(--accent); text-decoration: none; }
a:is(:hover, :active) { text-decoration: underline; }

h1, h2 { letter-spacing: -0.022em; line-height: 1.06; margin: 0; }

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  font-size: 1rem;
  border-radius: 980px;
  padding: 0.7em 1.4em;
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  white-space: nowrap;
}
.btn:is(:hover, :active) { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:is(:hover, :active) { background: var(--accent-hover); }
.btn-sm { font-size: 0.9rem; padding: 0.5em 1.1em; }
.btn-lg { font-size: 1.12rem; padding: 0.85em 1.9em; }

/* ── Nav ───────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 251, 253, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.7rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text);
}
.brand:is(:hover, :active) { text-decoration: none; }
.nav-links {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
}
.nav-links a {
  color: var(--text-soft);
  font-size: 0.94rem;
  font-weight: 450;
}
.nav-links a:is(:hover, :active) { color: var(--text); text-decoration: none; }

/* ── Hero ──────────────────────────────────────────────── */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) 1.5rem 2rem;
  text-align: center;
}
.hero-icon {
  margin: 0 auto 1.6rem;
  box-shadow: var(--shadow-soft);
}
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 650;
}
.hero h1 br {
  display: none;
}
.hero .lede {
  max-width: 36ch;
  margin: 1.4rem auto 0;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  color: var(--text-soft);
  font-weight: 400;
}
.hero-actions {
  margin-top: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.3rem;
  flex-wrap: wrap;
}
.hero-hint {
  display: inline-flex;
  align-items: center;
  /* gap: 0.4em; */
  gap: 0.5rem;
  color: var(--text-soft);
  font-size: 0.96rem;
}
.hero-hint .command {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
.hero-shot {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}
.hero-shot img {
  margin: 0 auto;
  filter: drop-shadow(0 40px 70px rgba(0, 0, 0, 0.3));
  border-radius: 12px;
}

/* ── Features ──────────────────────────────────────────── */
#features {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) 1.5rem;
}
.feature {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}
.feature-reverse .feature-text { order: 2; }
.feature-reverse .feature-shot { order: 1; }
.feature-text h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 600;
}
.feature-text p {
  margin: 1rem 0 0;
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  color: var(--text-soft);
  max-width: 38ch;
}
.feature-text em { color: var(--text); font-style: normal; font-weight: 500; }
.feature-shot { margin: 0; }
.feature-shot img {
  border-radius: 12px;
  filter: drop-shadow(0 26px 50px rgba(0, 0, 0, 0.22));
}

/* ── Shortcuts ─────────────────────────────────────────── */
.shortcuts {
  background: var(--bg-alt);
  padding: clamp(3.5rem, 8vw, 6rem) 1.5rem;
}
.section-head { text-align: center; margin: 0 auto; }
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 600;
}
.section-head p { color: var(--text-soft); margin: 0.8rem 0 0; font-size: 1.1rem; }
.shortcut-grid {
  max-width: 760px;
  margin: 2.8rem auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}
.shortcut {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--surface);
  /*
  border: 1px solid var(--border);
  border-radius: 14px;
  */
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 0.95rem 1.2rem;
  box-shadow: var(--shadow-soft);
}
.shortcut .keys {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
  min-width: 7.5rem;
}
.shortcut .desc { color: var(--text-soft); font-size: 0.96rem; }

/* ── kbd ───────────────────────────────────────────────── */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.7em;
  height: 1.7em;
  padding: 0 0.45em;
  font-family: var(--font);
  font-size: 0.82em;
  font-weight: 500;
  color: var(--text);
  background: var(--kbd-bg);
  border: 1px solid var(--kbd-border);
  border-bottom-width: 2px;
  border-radius: 6px;
  line-height: 1;
}
.plus { color: var(--text-faint); font-size: 0.82em; margin: 0 0.05em; }
.kbd-sep { color: var(--text-faint); font-size: 0.82em; }

/* ── Privacy ───────────────────────────────────────────── */
.privacy { padding: clamp(3.5rem, 8vw, 6rem) 1.5rem; }
.privacy-card {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
}
.privacy-card h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 600;
}
.privacy-card p {
  margin: 1.1rem 0 0;
  color: var(--text-soft);
  font-size: 1.12rem;
}

/* ── CTA ───────────────────────────────────────────────── */
.cta {
  background: var(--bg-alt);
  text-align: center;
  padding: clamp(4rem, 9vw, 7rem) 1.5rem;
}
.cta h2 {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 650;
  margin-bottom: 1.8rem;
}

/* ── Footer ────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.2rem 1.5rem;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--text);
}
.footer-credit { color: var(--text-faint); font-size: 0.92rem; margin: 0; }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 800px) {
  .hero h1 br { display: block; }
  .nav-links { display: none; }
  .nav-inner > .btn { margin-left: auto; }
  .feature {
    grid-template-columns: 1fr;
    gap: 1.8rem;
    text-align: center;
    padding: clamp(2.5rem, 9vw, 4rem) 0;
  }
  .feature-reverse .feature-text { order: 1; }
  .feature-reverse .feature-shot { order: 2; }
  .feature-text p { margin-left: auto; margin-right: auto; }
  .shortcut-grid { grid-template-columns: 1fr; }
  .shortcut .keys { min-width: 6.5rem; }
}