* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sai-font);
  color: var(--sai-ink);
  line-height: 1.55;
  background:
    radial-gradient(900px 320px at 10% -5%, #dbeafe 0%, transparent 60%),
    radial-gradient(800px 300px at 95% 0%, #ede9fe 0%, transparent 55%),
    radial-gradient(700px 280px at 50% 110%, #fef3c7 0%, transparent 60%),
    var(--sai-bg);
  min-height: 100vh;
}
:focus-visible { outline: 3px solid var(--sai-brand-2); outline-offset: 2px; border-radius: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.skip { position: absolute; left: 8px; top: -56px; background: var(--sai-grad-brand); color: #fff; padding: 10px 16px; border-radius: 10px; z-index: 50; font-weight: 800; transition: top var(--sai-dur-1) var(--sai-ease); }
.skip:focus { top: 8px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sai-line);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; gap: 10px; align-items: center; font-weight: 900; }
.brand img { width: 42px; height: 42px; filter: drop-shadow(0 6px 12px rgba(29,78,216,.3)); animation: float 4s ease-in-out infinite; }
.brand-name { font-size: 18px; letter-spacing: .3px; background: var(--sai-grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.small { font-size: 12px; }
.wrap { max-width: var(--sai-max); margin: 0 auto; padding: 16px 16px 32px; }
.page { display: none; }
.page.active { display: block; animation: rise var(--sai-dur-2) var(--sai-ease); }
.muted { color: var(--sai-muted); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.nav { gap: 8px; }
.nav button { position: relative; overflow: hidden; }
.nav button.active { background: var(--sai-grad-brand); color: #fff; border: 0; box-shadow: var(--sai-shadow-m); }
.grid { display: grid; gap: 12px; }
@media (min-width: 680px) { .grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 679px) { .grid.cols-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 420px) { .grid.cols-3 { grid-template-columns: 1fr; } }
input, select, textarea, button { font-size: 16px; font-family: inherit; }
input, select, textarea {
  width: 100%; padding: 12px 14px; min-height: var(--sai-touch);
  border: 1.5px solid var(--sai-line); border-radius: var(--sai-radius-s);
  background: #fff; color: var(--sai-ink);
  transition: border-color var(--sai-dur-1) var(--sai-ease), box-shadow var(--sai-dur-1) var(--sai-ease), transform var(--sai-dur-1) var(--sai-ease);
}
input:focus, select:focus, textarea:focus { border-color: var(--sai-brand); box-shadow: 0 0 0 4px var(--sai-brand-soft); outline: none; }
button {
  border: 0; border-radius: var(--sai-radius-s); padding: 12px 18px; min-height: var(--sai-touch);
  background: var(--sai-grad-brand); color: var(--sai-brand-ink); font-weight: 800; cursor: pointer;
  box-shadow: var(--sai-shadow-m);
  transition: transform var(--sai-dur-1) var(--sai-ease), box-shadow var(--sai-dur-1) var(--sai-ease), filter var(--sai-dur-1) var(--sai-ease);
  position: relative; overflow: hidden;
}
button:hover { transform: translateY(-1px); box-shadow: var(--sai-shadow-l); filter: saturate(1.08); }
button:active { transform: translateY(1px) scale(.99); }
button::after { content: ""; position: absolute; inset: 0; background: var(--sai-grad-shine); background-size: 220% 100%; background-position: 130% 0; opacity: 0; pointer-events: none; }
button:hover::after { opacity: 1; animation: shine 900ms var(--sai-ease); }
button.secondary { background: #fff; color: var(--sai-ink); border: 1.5px solid var(--sai-line); box-shadow: var(--sai-shadow-s); }
button.secondary:hover { border-color: var(--sai-brand); }
button:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.hero { display: grid; gap: 14px; padding: 20px 0; }
.hero h1 { margin: 0; font-size: clamp(26px, 4.5vw, 38px); line-height: 1.15; letter-spacing: -.5px; }
.hero-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.card.mini { text-align: center; padding: 12px 10px; }
.mini-n { font-size: 24px; font-weight: 900; background: var(--sai-grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.footer { padding: 28px 16px; text-align: center; color: var(--sai-muted); font-size: 13px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
@media (prefers-contrast: more) { body { background: #fff; } .card { border-width: 2px; } }