:root {
  color-scheme: light dark;
  --bg: #f5f5f7; --surface: #fff; --surface-2: #fafafc; --border: #d2d2d7;
  --text: #1d1d1f; --muted: #6e6e73; --primary: #1d1d1f; --primary-hover: #000; --on-primary: #fff;
  --link: #0066cc; --accent: #d70015; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 6px 20px rgba(0,0,0,.05);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --display: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000; --surface: #1c1c1e; --surface-2: #2c2c2e; --border: #38383a;
    --text: #f5f5f7; --muted: #a1a1a6; --primary: #f5f5f7; --primary-hover: #fff; --on-primary: #000;
    --link: #2997ff; --accent: #ff453a; --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.5 var(--font); }
a { color: var(--link); }
img { max-width: 100%; height: auto; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; color: #000; padding: 10px 14px; border-radius: 10px; z-index: 10; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--link); outline-offset: 3px; }

/* hero: white, black logo (white logo on black in dark mode) */
.hero { background: #fff; color: #1d1d1f; text-align: center; border-bottom: 1px solid var(--border); }
.hero-inner { padding-top: 88px; padding-bottom: 96px; }
.wordmark { margin: 0 auto; max-width: 780px; line-height: 0; }
.wordmark img { display: block; width: 100%; height: auto; }
.hero .tagline { margin: 48px auto 0; max-width: 20ch; font: 800 clamp(28px, 4.6vw, 52px)/1.08 var(--display); letter-spacing: -.03em; color: #1d1d1f; }
.lead { margin: 20px auto 0; max-width: 34em; font-size: clamp(18px, 2.2vw, 22px); color: #6e6e73; }
.cta { margin: 36px 0 0; }
@media (prefers-color-scheme: dark) {
  .hero { background: #000; color: #f5f5f7; }
  .hero .tagline { color: #f5f5f7; }
  .lead { color: #a1a1a6; }
}

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 34px; border-radius: 10px;
  background: var(--primary); color: var(--on-primary); font: 700 18px var(--font); text-decoration: none; border: 0; }
.btn:hover { background: var(--primary-hover); }

/* sections */
.section { padding: 80px 0 0; }
.section h2 { margin: 0; font: 800 clamp(26px, 4vw, 44px)/1.1 var(--display); letter-spacing: -.03em; }
.section-lead { margin: 12px 0 0; color: var(--muted); font-size: 19px; }

.cards { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--surface); border-radius: 12px; padding: 28px 26px 30px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.card .ico { display: block; margin-bottom: 18px; color: var(--text); }
.card h3 { margin: 0 0 8px; font: 700 21px/1.2 var(--display); letter-spacing: -.02em; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card-feature { grid-column: span 3; display: grid; grid-template-columns: auto 1fr; column-gap: 22px; align-items: start; background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.card-feature .ico { color: var(--on-primary); grid-row: span 2; margin: 2px 0 0; }
.card-feature p { color: var(--on-primary); opacity: .8; max-width: 46em; font-size: 18px; }
.card-feature h3 { font-size: 26px; }

.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: s; }
.steps li { border-top: 3px solid var(--text); padding-top: 18px; }
.num { display: block; font: 900 italic 44px/1 var(--display); letter-spacing: -.04em; margin-bottom: 10px; }
.steps h3 { margin: 0 0 6px; font: 700 21px/1.2 var(--display); letter-spacing: -.02em; }
.steps p { margin: 0; color: var(--muted); }

/* footer */
.footer { margin-top: 80px; background: #000; color: #f5f5f7; padding: 40px 0; }
.footer-inner { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.footer p { margin: 0; line-height: 1.6; }
.footer .muted { color: #a1a1a6; }

@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .card-feature { grid-column: span 2; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero-inner { padding-top: 48px; padding-bottom: 64px; }
  .hero .tagline { margin-top: 32px; }
  .btn { width: 100%; }
  .section { padding-top: 56px; }
  .cards { grid-template-columns: 1fr; }
  .card-feature { grid-column: auto; grid-template-columns: 1fr; }
  .card-feature .ico { grid-row: auto; margin-bottom: 18px; }
  .footer { margin-top: 56px; }
}

/* particle logo (js/home.js) */
.wordmark.is-animated picture { display: none; }
.wordmark .logo-stage { width: 100%; aspect-ratio: 1000 / 300; margin: -48px 0 -40px; }
.logo-particles-canvas { display: block; width: 100%; height: 100%; cursor: pointer; }
@media (max-width: 600px) { .wordmark .logo-stage { margin: -24px 0 -16px; } }