/* ============================================================================
   ALPHA OS: FONTS
   Gotham is the licensed brand face; Montserrat is its sanctioned web
   substitute (declared in the master ALPHA system). JetBrains Mono carries
   every eyebrow, label, and all numbers and money (tabular).

   Both families are fully embedded below via @font-face (all weights used
   on-site: Montserrat 400/500/600/700/800, JetBrains Mono 400/500/700).
   No Google Fonts link is required. If a page ever needs a weight that
   is not embedded here, add it as an additional @font-face block rather
   than pulling from Google Fonts.
   ========================================================================== */

/* cyrillic-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* greek */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-greek.woff2") format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
/* vietnamese */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-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;
}
/* latin-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-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;
}
/* latin */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* greek */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-greek.woff2") format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
/* vietnamese */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-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;
}
/* latin-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-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;
}
/* latin */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* greek */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-greek.woff2") format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
/* vietnamese */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-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;
}
/* latin-ext */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-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;
}
/* latin */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic-ext.woff2") format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("assets/fonts/montserrat-cyrillic.woff2") format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("assets/fonts/montserrat-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;
}

/* ============================================================================
   ALPHA OS: COLOUR TOKENS
   The ALPHA palette (verified from the master brand guide) plus the AP teal
   ramp. Law: one primary (ochre), two supports, never all three at full
   volume. Teal signals ALPHA AP and anything AI/automation touches.
   PMS references kept for print parity.
   ========================================================================== */

:root {
  /* --- Primitives -------------------------------------------------------- */
  --alpha-ochre:   #F19C49;  /* PMS 4009C: primary, accent, the one action */
  --alpha-blue:    #00567E;  /* PMS 2153C: headlines, structure */
  --alpha-teal:    #4797A8;  /* PMS 2226C: highlights, icons, AP accent */

  --alpha-black:   #101820;  /* dark brand stage */
  --ink-secondary: #44505C;  /* secondary text */
  --ink-muted:     #6F7B86;  /* muted text, captions */
  --paper:         #F6F4EF;  /* light surface, the logo's home */

  /* --- Status: meaningful, never decorative ------------------------------- */
  --status-critical: #D8634A;  /* error, math mismatch, rejected */
  --status-watching: #E0A843;  /* needs review, low confidence, unsaved */
  --status-good:     #5CA98C;  /* synced, approved, validated */

  /* --- AP teal scale (unit accent, derived from --alpha-teal) ------------- */
  --teal-50:  #EEF5F7;
  --teal-100: #D6E7EB;
  --teal-200: #AECFD6;
  --teal-300: #84B5C0;
  --teal-400: #4797A8;   /* = --alpha-teal, canonical AP accent */
  --teal-500: #3C8595;
  --teal-600: #316C7A;
  --teal-700: #275560;
  --teal-800: #1E4049;
  --teal-900: #142B31;

  /* --- Ochre tints for primary-action states + wash ----------------------- */
  --ochre-soft: #FBE7D2;   /* badge / highlight wash */
  --ochre-600:  #E08A33;   /* primary button hover */
  --ochre-700:  #C5762330; /* focus ring (alpha) */

  /* --- Neutral surface ramp (Paper + Black) ------------------------------- */
  --surface-0:     #FFFFFF;   /* cards on paper */
  --surface-1:     #F6F4EF;   /* paper base */
  --surface-2:     #ECE9E1;   /* sunken / table header on light */
  --hairline:      #E2DED5;   /* hairline borders on light */
  --hairline-dark: #243140;   /* hairline borders on dark stage */

  /* --- Semantic roles (use THESE in components, not primitives) ----------- */
  --color-action:         var(--alpha-ochre);
  --color-action-hover:   var(--ochre-600);
  --color-action-ink:     var(--alpha-black);
  --color-headline:       var(--alpha-blue);
  --color-accent:         var(--alpha-teal);
  --color-text:           var(--alpha-black);
  --color-text-secondary: var(--ink-secondary);
  --color-text-muted:     var(--ink-muted);
  --color-bg:             var(--surface-1);
  --color-bg-card:        var(--surface-0);
  --color-stage:          var(--alpha-black);
  --color-stage-ink:      var(--paper);
  --color-border:         var(--hairline);

  --color-confidence-high:   var(--status-good);
  --color-confidence-review: var(--status-watching);
  --color-error:             var(--status-critical);
}

/* ============================================================================
   ALPHA OS: TYPOGRAPHY TOKENS
   One brand face (Montserrat), one mono (JetBrains Mono).
   Numbers, money, eyebrows, and labels are ALWAYS mono and tabular.
   Casing: sentence case for headlines and body; UPPERCASE only for mono
   eyebrows, chrome, and micro-labels.
   ========================================================================== */

:root {
  --font-display: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
  --font-body:    'Montserrat', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:    'JetBrains Mono', 'SFMono-Regular', 'Consolas', ui-monospace, monospace;

  --weight-book:     400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;
  --weight-heavy:    800;

  /* Type scale (px) */
  --size-display: 104px;
  --size-h1:      76px;
  --size-h2:      52px;
  --size-h3:      40px;
  --size-lead:    28px;
  --size-body:    15px;
  --size-body-sm: 13px;
  --size-eyebrow: 11px;

  /* Leading & tracking */
  --leading-headline:  1.25;
  --leading-body:      1.5;
  --tracking-headline: -0.02em;
  --tracking-eyebrow:  0.18em;   /* mono uppercase eyebrows */
  --tracking-chrome:   0.12em;   /* mono uppercase chrome / labels */
}

/* ============================================================================
   ALPHA OS: SPACING TOKENS, 4px base scale
   ========================================================================== */

:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
}

/* ============================================================================
   ALPHA OS: RADIUS, BORDER & ELEVATION
   Small radii only (4 / 6 / 10). Pills reserved for LIVE STATUS only, never
   on buttons or cards. Hairline borders; soft two-part shadows.
   ========================================================================== */

:root {
  /* Radius */
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   10px;
  --radius-pill: 999px;   /* LIVE STATUS ONLY */

  /* Border & accent geometry */
  --border-hairline: 1px solid var(--color-border);
  --border-stage:    1px solid var(--hairline-dark);
  --stripe-width:    4px;   /* BU accent stripe (teal for AP) */
  --accent-bar:      3px;   /* top accent bar (ochre) on cards/slides */

  /* Elevation: soft two-part shadows */
  --shadow-sm: 0 1px 2px rgba(16,24,32,.04), 0 1px 1px rgba(16,24,32,.06);
  --shadow-md: 0 2px 4px rgba(16,24,32,.05), 0 6px 16px rgba(16,24,32,.07);
  --shadow-lg: 0 8px 24px rgba(16,24,32,.10), 0 2px 6px rgba(16,24,32,.06);
}

/* ============================================================================
   ALPHA OS: MOTION TOKENS
   Calm and purposeful. One ease, two durations. No bounce, no spring.
   ========================================================================== */

:root {
  --ease:     cubic-bezier(.2, .6, .2, 1);
  --dur-fast: 120ms;
  --dur:      200ms;
}

/* ============================================================================
   ALPHA OS: BASE + LAYOUT UTILITIES
   ========================================================================== */

*{box-sizing:border-box;}
body{margin:0;font-family:var(--font-body);color:var(--alpha-black);background:var(--surface-1);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p{margin:0;}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}
input,select,textarea{font-family:var(--font-body);font-size:15px;color:var(--alpha-black);width:100%;padding:12px 14px;background:var(--surface-1);border:1px solid var(--hairline);border-radius:6px;outline:none;transition:border-color .12s;}
input:focus,select:focus,textarea:focus{border-color:var(--alpha-ochre);box-shadow:0 0 0 3px var(--ochre-700);}
input::placeholder,textarea::placeholder{color:var(--ink-muted);}
.lbl{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-muted);margin-bottom:7px;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 clamp(20px,5vw,56px);}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);}
.grid-2-wide{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(32px,5vw,72px);align-items:center;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,40px);}
.side-2{display:grid;grid-template-columns:320px 1fr;gap:clamp(32px,5vw,72px);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.demo-grid{display:grid;grid-template-columns:1fr minmax(0,480px);gap:clamp(36px,5vw,72px);align-items:start;}
.hero-grid{display:grid;grid-template-columns:1fr minmax(0,470px);gap:clamp(40px,5vw,72px);align-items:center;}
.grid-2>*,.grid-2-wide>*,.grid-3>*,.grid-4>*,.side-2>*,.hero-grid>*,.form-row>*,.demo-grid>*{min-width:0;}
.navlinks{display:flex;gap:30px;align-items:center;}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;}
.mobile-menu{display:none;}
@media(max-width:1024px){
  .grid-2,.grid-2-wide,.grid-3,.grid-4,.side-2,.hero-grid,.form-row,.demo-grid{grid-template-columns:1fr;}
  .navlinks{display:none;}
  .hamburger{display:flex;}
  .mobile-menu.open{display:flex;}
}