:root {
  --color-primary-50: #f3f6f4;
  --color-primary-100: #e2e9e4;
  --color-primary-200: #c5d3c8;
  --color-primary-300: #9bb59f;
  --color-primary-400: #6e9573;
  --color-primary-500: #4f7a54;
  --color-primary-600: #3c6241;
  --color-primary-700: #314f35;
  --color-primary-800: #293f2c;
  --color-primary-900: #213324;
  --color-secondary-50: #f5f5f4;
  --color-secondary-100: #e8e6e3;
  --color-secondary-200: #d2cec8;
  --color-secondary-300: #b1aaa1;
  --color-secondary-400: #8f8780;
  --color-secondary-500: #756e67;
  --color-secondary-600: #5e5852;
  --color-secondary-700: #4b4742;
  --color-secondary-800: #3c3935;
  --color-secondary-900: #2e2c29;
  --color-accent-50: #f7f3ee;
  --color-accent-100: #ece0d1;
  --color-accent-200: #d9c1a3;
  --color-accent-300: #c29c70;
  --color-accent-400: #a87c4a;
  --color-accent-500: #8e6336;
  --color-accent-600: #76502f;
  --color-accent-700: #5f4128;
  --color-accent-800: #4d3522;
  --color-accent-900: #3d2b1c;
  --color-success-50: #effaf0;
  --color-success-100: #d8f3dc;
  --color-success-200: #b4e7bd;
  --color-success-300: #82d493;
  --color-success-400: #4cbb63;
  --color-success-500: #2aa346;
  --color-success-600: #1d8637;
  --color-success-700: #1a6c30;
  --color-success-800: #175628;
  --color-success-900: #134722;
  --color-warning-50: #fff9e6;
  --color-warning-100: #fff0bf;
  --color-warning-200: #ffe28a;
  --color-warning-300: #ffd24d;
  --color-warning-400: #fbbf24;
  --color-warning-500: #e6a810;
  --color-warning-600: #c4870a;
  --color-warning-700: #9c6808;
  --color-warning-800: #7d540a;
  --color-warning-900: #66450b;
  --color-error-50: #fdf0f0;
  --color-error-100: #fadcdc;
  --color-error-200: #f5bcbc;
  --color-error-300: #ec9090;
  --color-error-400: #df6464;
  --color-error-500: #cc4444;
  --color-error-600: #b33434;
  --color-error-700: #902a2a;
  --color-error-800: #732626;
  --color-error-900: #5e2424;
  --color-neutral-0: #ffffff;
  --color-neutral-50: #fafaf9;
  --color-neutral-100: #f5f5f4;
  --color-neutral-200: #e7e5e4;
  --color-neutral-300: #d6d3d1;
  --color-neutral-400: #a8a29e;
  --color-neutral-500: #78716c;
  --color-neutral-600: #57534e;
  --color-neutral-700: #44403c;
  --color-neutral-800: #292524;
  --color-neutral-900: #1c1917;
  --color-neutral-950: #0c0a09;
  --font-sans: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono: "Source Code Pro", "Courier New", monospace;
  --line-height-body: 1.6;
  --line-height-heading: 1.2;
  --spacing-1: 0.5rem;
  --spacing-2: 1rem;
  --spacing-3: 1.5rem;
  --spacing-4: 2rem;
  --spacing-5: 2.5rem;
  --spacing-6: 3rem;
  --spacing-7: 3.5rem;
  --spacing-8: 4rem;
  --spacing-9: 4.5rem;
  --spacing-10: 5rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(28,25,23,0.06), 0 1px 3px rgba(28,25,23,0.04);
  --shadow-md: 0 4px 6px rgba(28,25,23,0.06), 0 2px 4px rgba(28,25,23,0.05);
  --shadow-lg: 0 10px 20px rgba(28,25,23,0.08), 0 4px 8px rgba(28,25,23,0.05);
  --shadow-xl: 0 20px 40px rgba(28,25,23,0.1), 0 8px 16px rgba(28,25,23,0.06);
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --container-max: 1200px;
  --container-narrow: 760px;
  --container-wide: 1400px;
  --header-height: 72px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: var(--line-height-body);
  color: var(--color-neutral-800);
  background-color: var(--color-neutral-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: var(--line-height-heading);
  color: var(--color-neutral-900);
  margin: 0 0 var(--spacing-2);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.625rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { margin: 0 0 var(--spacing-2); }

a {
  color: var(--color-primary-700);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--color-primary-500); }

ul, ol { margin: 0 0 var(--spacing-2); padding-left: var(--spacing-3); }

img { max-width: 100%; height: auto; display: block; }

button { font-family: inherit; }

:focus-visible {
  outline: 2px solid var(--color-primary-600);
  outline-offset: 2px;
}

::selection { background: var(--color-primary-200); color: var(--color-neutral-900); }

hr {
  border: none;
  border-top: 1px solid var(--color-neutral-200);
  margin: var(--spacing-4) 0;
}