/* Inter (display + body) and JetBrains Mono (code/labels), self-hosted in fonts/. */
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  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
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  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
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  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-greek-ext.woff2") format('woff2');
  unicode-range: U+1F00-1FFF;
}
@font-face {
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  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-greek.woff2") format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
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  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-vietnamese.woff2") format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-latin-ext.woff2") format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
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  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/inter-latin.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
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  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
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  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
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  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-greek-ext.woff2") format('woff2');
  unicode-range: U+1F00-1FFF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-greek.woff2") format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-vietnamese.woff2") format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
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  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
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}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/inter-latin.woff2") format('woff2');
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}
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  font-display: swap;
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  font-display: swap;
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  font-display: swap;
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  unicode-range: U+1F00-1FFF;
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@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
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  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/inter-vietnamese.woff2") format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
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  font-style: normal;
  font-weight: 600;
  font-display: swap;
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}
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  font-weight: 600;
  font-display: swap;
  src: url("fonts/inter-latin.woff2") format('woff2');
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  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
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  font-display: swap;
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  font-display: swap;
  src: url("fonts/jetbrains-mono-latin.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ==========================================================================
   FineParser — Color tokens ("Ascend" theme)
   Light-mode, white-canvas. Electric blue primary, amber secondary,
   ABBYY red reserved for the heritage badge ONLY.
   All values OKLCH.
   ========================================================================== */

:root {
  /* ---- Paper & surfaces ---- */
  --color-paper:          oklch(100% 0 0);            /* pure white */
  --color-surface:        oklch(97% 0.015 245);       /* barely blue-tinted cards */
  --color-surface-raised: oklch(99% 0.005 245);
  --color-border:         oklch(91% 0.02 245);
  --color-border-subtle:  oklch(95% 0.01 245);

  /* ---- Text ---- */
  --color-text:           oklch(16% 0.01 245);        /* near-black */
  --color-text-muted:     oklch(52% 0.02 240);        /* slate-grey */
  --color-text-disabled:  oklch(72% 0.01 245);

  /* ---- Electric blue — primary brand accent (NOT indigo) ---- */
  --color-accent:         oklch(55% 0.26 245);        /* vivid electric blue */
  --color-accent-hover:   oklch(63% 0.22 245);
  --color-accent-light:   oklch(75% 0.15 245);
  --color-accent-subtle:  oklch(96% 0.03 245);
  --color-accent-text:    oklch(100% 0 0);

  /* ---- Amber — warm secondary (Ascend mountain edges) ---- */
  --color-warm:           oklch(68% 0.13 55);
  --color-warm-hover:     oklch(76% 0.11 58);
  --color-warm-subtle:    oklch(96% 0.025 65);
  --color-warm-text:      oklch(30% 0.08 55);

  /* ---- ABBYY red — HERITAGE BADGE ONLY, nowhere else ---- */
  --color-abbyy:          oklch(50% 0.22 27);
  --color-abbyy-subtle:   oklch(96% 0.02 27);

  /* ---- Semantic ---- */
  --color-success:        oklch(60% 0.18 155);
  --color-error:          oklch(55% 0.22 25);
  --color-warning:        oklch(72% 0.16 70);
  --color-focus:          oklch(55% 0.26 245 / 0.5);
  --color-code-bg:        oklch(97% 0.015 245);
  --color-code-border:    oklch(88% 0.04 245);

  /* ---- Semantic aliases ---- */
  --surface-page:         var(--color-paper);
  --surface-card:         var(--color-paper);
  --surface-sunken:       var(--color-surface);
  --text-body:            var(--color-text);
  --text-soft:            var(--color-text-muted);
  --border-default:       var(--color-border);
}

/* ==========================================================================
   FineParser — Typography tokens
   Inter for display + body, JetBrains Mono for code/labels.
   ========================================================================== */

:root {
  /* ---- Families ---- */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* ---- Weights ---- */
  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;
  --weight-extra:    800;
  --weight-black:    900;

  /* ---- Type scale ---- */
  --text-xs:    0.75rem;    /* 12px */
  --text-sm:    0.875rem;   /* 14px */
  --text-base:  1rem;       /* 16px */
  --text-lg:    1.125rem;   /* 18px */
  --text-xl:    1.25rem;    /* 20px */
  --text-2xl:   1.5rem;     /* 24px */
  --text-3xl:   1.875rem;   /* 30px */
  --text-4xl:   2.25rem;    /* 36px */
  --text-5xl:   3rem;       /* 48px */
  --text-6xl:   3.75rem;    /* 60px */
  --text-display-s: clamp(2.5rem, 5vw + 0.75rem, 4.5rem); /* @kind spacing */
  --text-display:   clamp(4rem, 14vw + 1rem, 10rem); /* @kind spacing */

  /* ---- Line heights ---- */
  --leading-tight:   1.1;
  --leading-snug:    1.25;
  --leading-normal:  1.5;
  --leading-relaxed: 1.65;

  /* ---- Letter spacing ---- */
  --tracking-display: -0.03em;   /* big headings */
  --tracking-heading: -0.02em;   /* headings */
  --tracking-normal:  0;
  --tracking-wide:    0.02em;
  --tracking-label:   0.08em;    /* eyebrow / uppercase labels */
}

/* ==========================================================================
   FineParser — Spacing, radius & layout tokens
   4pt spacing scale.
   ========================================================================== */

:root {
  /* ---- Spacing (4pt scale) ---- */
  --space-1:   0.25rem;   /* 4px  */
  --space-2:   0.5rem;    /* 8px  */
  --space-3:   0.75rem;   /* 12px */
  --space-4:   1rem;      /* 16px */
  --space-5:   1.25rem;   /* 20px */
  --space-6:   1.5rem;    /* 24px */
  --space-8:   2rem;      /* 32px */
  --space-10:  2.5rem;    /* 40px */
  --space-12:  3rem;      /* 48px */
  --space-16:  4rem;      /* 64px */
  --space-20:  5rem;      /* 80px */
  --space-24:  6rem;      /* 96px */
  --space-32:  8rem;      /* 128px */
  --space-40:  10rem;     /* 160px */

  /* ---- Radius ---- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  /* ---- Layout ---- */
  --layout-max:    1200px;   /* content max width */
  --layout-prose:  65ch;     /* readable prose width */
  --layout-gutter: clamp(1.5rem, 4vw, 4rem); /* @kind spacing */
}

/* ==========================================================================
   FineParser — Elevation (shadows) tokens
   Light-mode. Soft, low-contrast. No heavy drop shadows.
   ========================================================================== */

:root {
  --shadow-sm:     0 1px 3px oklch(16% 0.01 245 / 0.08);
  --shadow-md:     0 4px 16px oklch(16% 0.01 245 / 0.1);
  --shadow-lg:     0 10px 40px oklch(16% 0.01 245 / 0.12);
  --shadow-accent: 0 0 28px oklch(55% 0.26 245 / 0.2);
  --shadow-card:   0 1px 4px oklch(16% 0.01 245 / 0.06),
                   0 4px 16px oklch(16% 0.01 245 / 0.06);
  /* Floating frosted nav */
  --shadow-nav:    0 1px 2px oklch(16% 0.01 245 / 0.04),
                   0 8px 32px oklch(16% 0.01 245 / 0.1);
}

/* ==========================================================================
   FineParser — Motion tokens
   Minimal stance: subtle reveals and transitions, not showy.
   ========================================================================== */

:root {
  /* ---- Easing ---- */
  --ease-out:    cubic-bezier(0, 0, 0.2, 1); /* @kind other */
  --ease-in:     cubic-bezier(0.4, 0, 1, 1); /* @kind other */
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1); /* @kind other */

  /* ---- Duration ---- */
  --duration-fast:  100ms; /* @kind other */
  --duration-base:  200ms; /* @kind other */
  --duration-slow:  350ms; /* @kind other */
  --duration-xslow: 500ms; /* @kind other */

  /* ---- Common composed transition ---- */
  --transition-base: all var(--duration-base) var(--ease-out);
}

/* ==========================================================================
   FineParser — Base element styles
   Minimal resets + sensible defaults wired to the tokens. Kept small so
   it composes cleanly into consumer pages.
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  /* clip, NOT hidden — overflow-x: hidden breaks position: sticky */
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-tight);
  color: var(--color-text);
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-out);
}

a:hover {
  color: var(--color-accent-hover);
}

code, pre, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

::selection {
  background: var(--color-accent-subtle);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

a { text-decoration: none; }
button { font-family: inherit; }

/* ---- Hover states (extracted from inline style-hover directives) ---- */
.hover-accent:hover { background: var(--color-accent-hover); }
.hover-surface:hover { background: var(--color-surface); }
.hover-card:hover { border-color: var(--color-accent-light); box-shadow: var(--shadow-md); }