/* ===== Fonts ===== */
@import url("https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500;600&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&display=swap");

/* ===== Color tokens (shadcn/ui v4 neutral theme) ===== */
:root {
  --background: oklch(1 0 0);
  --foreground: oklch(0% 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0% 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0% 0 0);
  --primary: oklch(0% 0 0);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --destructive-foreground: oklch(0.97 0.01 17);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
  --chart-1: oklch(0.87 0.045 80);
  --chart-2: oklch(0.76 0.075 70);
  --chart-3: oklch(0.65 0.095 55);
  --chart-4: oklch(0.55 0.1 45);
  --chart-5: oklch(0.45 0.09 40);
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0% 0 0);
  --sidebar-primary: oklch(0.205 0 0);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.97 0 0);
  --sidebar-accent-foreground: oklch(0.205 0 0);
  --sidebar-border: oklch(0.922 0 0);
  --sidebar-ring: oklch(0.708 0 0);
  --surface: oklch(0.98 0 0);
  --surface-foreground: var(--foreground);
  --selection: oklch(0% 0 0);
  --selection-foreground: oklch(1 0 0);
}
.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.205 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.205 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.922 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.371 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --destructive-foreground: oklch(0.58 0.22 27);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.556 0 0);
  --sidebar: oklch(0.205 0 0);
  --sidebar-foreground: oklch(0.985 0 0);
  --sidebar-primary: oklch(0.488 0.243 264.376);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.269 0 0);
  --sidebar-accent-foreground: oklch(0.985 0 0);
  --sidebar-border: oklch(1 0 0 / 10%);
  --sidebar-ring: oklch(0.439 0 0);
  --surface: oklch(0.2 0 0);
  --surface-foreground: oklch(0.708 0 0);
  --selection: oklch(0.922 0 0);
  --selection-foreground: oklch(0.205 0 0);
}
::selection { background: var(--selection); color: var(--selection-foreground); }

/* ===== Typography tokens ===== */
:root {
  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-heading: var(--font-sans);
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --text-xs: 12px; --leading-xs: 16px;
  --text-sm: 14px; --leading-sm: 20px;
  --text-base: 16px; --leading-base: 24px;
  --text-lg: 18px; --leading-lg: 28px;
  --text-xl: 20px; --leading-xl: 28px;
  --text-2xl: 24px; --leading-2xl: 32px;
  --text-3xl: 30px; --leading-3xl: 36px;
  --text-4xl: 36px; --leading-4xl: 40px;
  --text-5xl: 48px; --leading-5xl: 48px;
  --font-weight-normal: 400; --font-weight-medium: 500; --font-weight-semibold: 600; --font-weight-bold: 700;
  --tracking-tight: -0.025em; --tracking-tighter: -0.04em;
}
body { font-family: var(--font-sans); color: var(--foreground); background: var(--background); font-synthesis-weight: none; text-rendering: optimizeLegibility; margin: 0; }
a { color: var(--foreground); text-decoration: none; }
a:hover { color: var(--muted-foreground); }

/* ===== Spacing / radius / shadow tokens ===== */
:root {
  --spacing: 4px;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 48px; --space-16: 64px; --space-24: 96px;
  --radius: 0.625rem;
  --radius-xs: 4px;
  --radius-sm: calc(var(--radius) * 0.6);
  --radius-md: calc(var(--radius) * 0.8);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) * 1.4);
  --radius-2xl: calc(var(--radius) * 1.8);
  --radius-full: 9999px;
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* ===== Component classes (krani.css, shadcn-derived) ===== */
.k-btn { display: inline-flex; flex-shrink: 0; align-items: center; justify-content: center; gap: 8px; border-radius: var(--radius-md); font-family: var(--font-sans); font-size: var(--text-sm); line-height: var(--leading-sm); font-weight: var(--font-weight-medium); white-space: nowrap; border: 1px solid transparent; cursor: pointer; transition: all .15s; outline: none; text-decoration: none; height: 36px; padding: 0 16px; background: transparent; color: var(--foreground); }
.k-btn svg { width: 16px; height: 16px; flex-shrink: 0; pointer-events: none; }
.k-btn:focus-visible { border-color: var(--ring); box-shadow: 0 0 0 3px color-mix(in oklab, var(--ring) 50%, transparent); }
.k-btn-default { background: var(--primary); color: var(--primary-foreground); }
.k-btn-default:hover { background: color-mix(in oklab, var(--primary) 90%, transparent); }
.k-btn-outline { border-color: var(--border); background: var(--background); box-shadow: var(--shadow-xs); }
.k-btn-outline:hover { background: var(--accent); color: var(--accent-foreground); }
.k-btn-ghost:hover { background: var(--accent); color: var(--accent-foreground); }
.k-btn-size-sm { height: 32px; gap: 6px; padding: 0 12px; }
.k-btn-size-lg { height: 40px; padding: 0 24px; }

/* ===== Page-level styles ===== */
html { scroll-behavior: smooth; }
body { background: #fff; }
@keyframes kPulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

#hero-notes-toggle,
[data-notes-block] { display: none !important; }

@media (max-width: 820px) {
  [data-m="hdr"] { padding: 0 18px !important; height: 56px !important; gap: 10px !important; }
  [data-m="navlinks"] { display: none !important; }
  [data-m="sec"] { padding-left: 20px !important; padding-right: 20px !important; padding-top: 64px !important; }
  #top[data-m="sec"] { padding-top: 44px !important; }
  [data-m="heroframe"] { margin-top: 40px !important; }
  [data-m="diagram"] { flex-direction: column !important; align-items: stretch !important; padding: 20px !important; gap: 14px !important; }
  [data-m="arrow"] { transform: rotate(90deg); align-self: center; }
  [data-m="paper"] { width: auto !important; }
  [data-m="intgrid"] { gap: 52px 56px !important; padding: 30px 18px !important; }
  [data-m="intgrid"] img { max-width: 100% !important; }
  [data-m="outcome"] { padding: 48px 22px !important; }
  [data-m="cta"] { padding: 72px 20px !important; margin-top: 80px !important; }
  [data-m="ftop"] { padding: 44px 20px 32px !important; gap: 32px !important; }
  [data-m="fbot"] { padding: 24px 20px 132px !important; }
  [data-m="stickyin"] { padding: 10px 20px !important; gap: 10px !important; }
  [data-m="stickyin"] > span { flex: 1 1 100% !important; font-size: 13.5px !important; }
  [data-m="stickyin"] > a { flex: 1 1 100% !important; justify-content: center; }
}
@media (max-width: 820px) {
  [data-m="inthub"] { width: 48px !important; height: 48px !important; }
  [data-m="inthub"] svg { width: 21px !important; height: 21px !important; }
  [data-m="intline-h"] { left: 18px !important; right: 18px !important; }
  [data-m="intline-v"] { top: 28px !important; bottom: 28px !important; }
}
@media (max-width: 560px) {
  [data-m="sec"] { padding-top: 56px !important; }
  [data-m="intgrid"] { gap: 56px !important; padding: 28px 12px !important; }
  [data-m="inthub"] { width: 44px !important; height: 44px !important; }
  [data-m="inthub"] svg { width: 19px !important; height: 19px !important; }
}