:root {
  --system-background: #ffffff;
  --secondary-system-background: #f2f2f7;
  --tertiary-system-background: #ffffff;
  --system-grouped-background: #f2f2f7;
  --secondary-grouped-background: #ffffff;
  --label: #000000;
  --secondary-label: rgba(60, 60, 67, 0.60);
  --tertiary-label: rgba(60, 60, 67, 0.30);
  --quaternary-label: rgba(60, 60, 67, 0.18);
  --placeholder-text: rgba(60, 60, 67, 0.30);
  --link: #007aff;
  --system-fill: rgba(120, 120, 128, 0.20);
  --secondary-system-fill: rgba(120, 120, 128, 0.16);
  --tertiary-system-fill: rgba(118, 118, 128, 0.12);
  --quaternary-system-fill: rgba(116, 116, 128, 0.08);
  --separator: rgba(60, 60, 67, 0.29);
  --opaque-separator: #c6c6c8;
  --blue: #007aff;
  --green: #34c759;
  --indigo: #5856d6;
  --orange: #ff9500;
  --pink: #ff2d55;
  --purple: #af52de;
  --red: #ff3b30;
  --teal: #5ac8fa;
  --yellow: #ffcc00;
  --gray: #8e8e93;
  --gray2: #ae2eb2;
  --gray3: #c7c7cc;
  --gray4: #d1d1d6;
  --gray5: #e5e5ea;
  --gray6: #f2f2f7;
  --material-ultra-thin: rgba(255, 255, 255, 0.72);
  --material-thin: rgba(255, 255, 255, 0.82);
  --material-regular: rgba(245, 245, 247, 0.90);
  --material-thick: rgba(255, 255, 255, 0.96);
  --material-border: rgba(255, 255, 255, 0.45);
  --material-blur: blur(25px) saturate(180%);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 1px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-2xl: 28px;
  --ease-interactive: cubic-bezier(0.25, 1, 0.5, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --system-background: #000000;
    --secondary-system-background: #1c1c1e;
    --tertiary-system-background: #2c2c2e;
    --system-grouped-background: #000000;
    --secondary-grouped-background: #1c1c1e;
    --label: #ffffff;
    --secondary-label: rgba(235, 235, 245, 0.60);
    --tertiary-label: rgba(235, 235, 245, 0.30);
    --quaternary-label: rgba(235, 235, 245, 0.16);
    --placeholder-text: rgba(235, 235, 245, 0.30);
    --link: #0a84ff;
    --system-fill: rgba(120, 120, 128, 0.36);
    --secondary-system-fill: rgba(120, 120, 128, 0.32);
    --tertiary-system-fill: rgba(118, 118, 128, 0.24);
    --quaternary-system-fill: rgba(118, 118, 128, 0.18);
    --separator: rgba(84, 84, 88, 0.65);
    --opaque-separator: #38383a;
    --blue: #0a84ff;
    --green: #30d158;
    --indigo: #5e5ce6;
    --orange: #ff9f0a;
    --pink: #ff375f;
    --purple: #bf5af2;
    --red: #ff453a;
    --teal: #64d2ff;
    --yellow: #ffd60a;
    --gray: #8e8e93;
    --gray2: #636366;
    --gray3: #48484a;
    --gray4: #3a3a3c;
    --gray5: #2c2c2e;
    --gray6: #1c1c1e;
    --material-ultra-thin: rgba(28, 28, 30, 0.75);
    --material-thin: rgba(36, 36, 38, 0.85);
    --material-regular: rgba(44, 44, 46, 0.90);
    --material-thick: rgba(50, 50, 52, 0.96);
    --material-border: rgba(255, 255, 255, 0.12);
    --material-blur: blur(28px) saturate(190%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.08);
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--system-background);
  color: var(--label);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--link); text-decoration: none; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 22px; }

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--material-ultra-thin);
  backdrop-filter: var(--material-blur);
  -webkit-backdrop-filter: var(--material-blur);
  border-bottom: 0.5px solid var(--separator);
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 48px;
  gap: 28px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--label);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.012em;
}
.nav-brand img { width: 26px; height: 26px; border-radius: 7px; object-fit: cover; }
.nav-links {
  display: flex;
  gap: 22px;
  margin-left: auto;
}
.nav-links a {
  color: var(--secondary-label);
  font-size: 15px;
  letter-spacing: -0.005em;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--label); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.012em;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-interactive), filter 0.2s ease, opacity 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.965); }
.btn-filled { background: var(--blue); color: #ffffff; }
.btn-filled:hover { filter: brightness(1.06); }
.btn-filled:active { filter: brightness(0.92); }
.btn-tinted { background: rgba(0, 122, 255, 0.12); color: var(--blue); }
.btn-tinted:hover { background: rgba(0, 122, 255, 0.18); }
@media (prefers-color-scheme: dark) {
  .btn-tinted { background: rgba(10, 132, 255, 0.20); }
}
.btn-ghost { background: var(--tertiary-system-fill); color: var(--label); }
.btn-ghost:hover { background: var(--secondary-system-fill); }
.btn-sm { min-height: 34px; padding: 0 16px; font-size: 15px; }

.hero {
  text-align: center;
  padding: 110px 0 56px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--secondary-label);
  margin-bottom: 22px;
}
.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}
h1 {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.06;
  color: var(--label);
  margin-bottom: 20px;
}
.sub {
  font-size: 19px;
  color: var(--secondary-label);
  letter-spacing: -0.005em;
  max-width: 580px;
  margin: 0 auto 34px;
}
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.codeblock {
  max-width: 620px;
  margin: 48px auto 0;
  background: var(--secondary-system-background);
  border-radius: var(--radius-lg);
  text-align: left;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.codehead {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 18px;
  border-bottom: 0.5px solid var(--separator);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }
.codehead .lang { margin-left: auto; font-size: 12px; color: var(--tertiary-label); }
pre {
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--label);
}
.token-cmd { color: var(--link); font-weight: 600; }
.token-str { color: var(--green); }

.grouped {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--secondary-grouped-background);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.stat {
  padding: 24px 20px;
  text-align: center;
  border-right: 0.5px solid var(--separator);
}
.stat:last-child { border-right: none; }
.stat b {
  display: block;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--label);
}
.stat span { font-size: 13px; color: var(--secondary-label); }

section { padding: 72px 0; }
.sec-head { text-align: center; margin-bottom: 42px; }
.sec-head h2 {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.08;
  color: var(--label);
  margin-bottom: 12px;
}
.sec-head p { font-size: 19px; color: var(--secondary-label); letter-spacing: -0.005em; }

.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature {
  background: var(--secondary-grouped-background);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease-interactive), box-shadow 0.25s ease;
}
.feature:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.feature .ico {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 18px;
  color: #ffffff;
}
.ico-blue { background: var(--blue); }
.ico-green { background: var(--green); }
.ico-orange { background: var(--orange); }
.ico-teal { background: var(--teal); }
.feature h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--label);
  margin-bottom: 8px;
}
.feature p { font-size: 15px; color: var(--secondary-label); letter-spacing: -0.005em; }

footer {
  border-top: 0.5px solid var(--separator);
  padding: 36px 0 56px;
  text-align: center;
}
footer .brand {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--label);
  margin-bottom: 6px;
}
footer .note { font-size: 13px; color: var(--secondary-label); }
footer #year { margin-top: 14px; font-size: 12px; color: var(--tertiary-label); }

@media (max-width: 860px) {
  .grouped, .features { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  h1 { font-size: 38px; }
}
@media (max-width: 520px) {
  .grouped, .features { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 0.5px solid var(--separator); }
  .stat:last-child { border-bottom: none; }
  .nav-links { display: none; }
  h1 { font-size: 32px; }
}