:root {
  color-scheme: light dark;
  --canvas: #f5f7fb;
  --surface: #ffffff;
  --text: #17213a;
  --secondary: #5f6c85;
  --line: #d8dfeb;
  --accent: #235ee7;
  --accent-pressed: #1749bd;
  --accent-soft: #e9efff;
  --focus: #7aa7ff;
  --shadow: 0 12px 32px rgb(19 35 65 / 8%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #09101f;
    --surface: #111b2f;
    --text: #f4f7ff;
    --secondary: #bdc8db;
    --line: #30405a;
    --accent: #91adff;
    --accent-pressed: #bfd0ff;
    --accent-soft: #1d315f;
    --focus: #c3d2ff;
    --shadow: 0 12px 32px rgb(0 0 0 / 24%);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--canvas); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: clamp(1rem, .97rem + .15vw, 1.125rem); line-height: 1.55; text-rendering: optimizeLegibility; }
a { color: var(--accent); text-decoration-thickness: .08em; text-underline-offset: .16em; }
a:hover { color: var(--accent-pressed); }
a:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 10; padding: .7rem 1rem; background: var(--surface); }
.skip-link:focus { top: 1rem; }
.site-header { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--canvas) 92%, transparent); }
.header-inner, .content, .site-footer { width: min(100% - 2.5rem, 70rem); margin-inline: auto; }
.header-inner { min-height: 4.75rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .72rem; color: var(--text); font-weight: 720; letter-spacing: -.025em; text-decoration: none; }
.brand-mark { width: 1.9rem; height: 1.9rem; display: grid; place-items: center; color: white; background: linear-gradient(135deg, #2168f3, #8247ef); border-radius: 32% 68% 42% 58% / 42% 41% 59% 58%; box-shadow: 0 4px 14px rgb(55 94 221 / 30%); font-size: 1.45rem; line-height: 1; transform: rotate(-18deg); }
.brand-word { font-size: 1.1rem; }
.app-link { min-height: 2.75rem; display: inline-flex; align-items: center; justify-content: center; padding: .55rem .9rem; border: 1px solid var(--line); border-radius: .7rem; color: var(--text); font-size: .9rem; font-weight: 650; text-decoration: none; }
.app-link:hover { background: var(--accent-soft); color: var(--text); }
main { padding-block: clamp(3.5rem, 8vw, 7rem); }
.hero { min-height: 26rem; display: grid; align-content: center; max-width: 52rem; }
.eyebrow { margin: 0 0 1rem; color: var(--accent); font-size: .8rem; font-weight: 750; letter-spacing: .11em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; line-height: 1.1; letter-spacing: -.04em; }
h1 { max-width: 18ch; font-size: clamp(2.55rem, 7vw, 5.25rem); }
h2 { margin-top: 3rem; font-size: clamp(1.75rem, 4vw, 2.7rem); }
h3 { margin-top: 2.25rem; font-size: 1.25rem; }
.lede { max-width: 43rem; margin: 1.5rem 0 0; color: var(--secondary); font-size: clamp(1.15rem, 2.3vw, 1.45rem); }
.cta { width: fit-content; min-height: 3rem; margin-top: 2rem; display: inline-flex; align-items: center; padding: .7rem 1.05rem; border-radius: .75rem; color: #fff; background: var(--accent); box-shadow: var(--shadow); font-weight: 700; text-decoration: none; }
.cta:hover { color: #fff; background: var(--accent-pressed); }
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; padding: 0; margin: 0; list-style: none; }
.principles li { min-height: 10.5rem; padding: 1.3rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--surface); box-shadow: var(--shadow); }
.principles strong { display: block; margin-bottom: .4rem; font-size: 1.05rem; }
.principles span { color: var(--secondary); font-size: .94rem; }
.legal { max-width: 45rem; }
.legal .intro { margin-top: 1.25rem; color: var(--secondary); }
.legal p, .legal li { max-width: 70ch; }
.legal ul { padding-left: 1.3rem; }
.legal li + li { margin-top: .55rem; }
.notice { margin-top: 2rem; padding: 1rem 1.1rem; border-left: 3px solid var(--accent); border-radius: .35rem; background: var(--accent-soft); color: var(--text); }
.site-footer { padding-block: 1.75rem 2.25rem; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem 1.5rem; color: var(--secondary); font-size: .88rem; }
.site-footer nav { display: flex; gap: 1.1rem; }
@media (max-width: 44rem) { .header-inner, .content, .site-footer { width: min(100% - 2rem, 70rem); } .principles { grid-template-columns: 1fr; } .principles li { min-height: auto; } }