:root {
    /* Color Tokens - Monochrome Ink with Deep Naval Slate Accent (60/30/10) */
    --ground: #fff;
    --surface: #f0f0f0;
    --surface-2: #dedede;
    --line: #bababa;
    --ink-soft: #4d4d4d;
    --ink: #292929;
    --accent: #3a5a8c;
    --accent-ink: #fff;


    /* Typography Families */
    --dice-cd9: 'EB Garamond', 'EB Garamond Fallback', Garamond, Georgia, serif;
    --dice-480: 'Crimson Pro', "Crimson Pro Fallback", "Times New Roman", Garamond, serif;
    --dice-5fe: "JetBrains Mono", "JetBrains Mono Fallback", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;


    /* Fluid Display Scale */
    --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
    --text-sm: clamp(0.875rem, 0.84rem + 0.18vw, 0.9375rem);
    --text-base: clamp(1.0625rem, 1.02rem + 0.22vw, 1.1875rem);
    --text-md: clamp(1.25rem, 1.18rem + 0.35vw, 1.4375rem);
    --text-lg: clamp(1.5rem, 1.38rem + 0.6vw, 1.875rem);
    --text-xl: clamp(1.875rem, 1.68rem + 0.98vw, 2.5rem);
    --text-2xl: clamp(2.35rem, 2.05rem + 1.5vw, 3.375rem);
    --text-display: clamp(2.85rem, 2.3rem + 2.75vw, 4.75rem);
    --text-lead: clamp(1.125rem, 1.08rem + 0.25vw, 1.3125rem);


    /* Optical Measures & Rhythm */
    --measure-narrow: 48ch;
    --measure-prose: 65ch;
    --measure-wide: 78ch;


    --space-2xs: 0.25rem;
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4.5rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;


    --container-max: 1280px;
    --gutter: clamp(1rem, 0.75rem + 1.25vw, 2rem);
    --dock-height: 64px;


    /* Motion Tokens */
    --duration-rapid: 140ms;
    --duration-base: 220ms;
    --duration-slow: 380ms;
    --duration-settle: 600ms;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.45, 0, 0.15, 1);
    --ease-fine: cubic-bezier(0.25, 1, 0.5, 1);


    /* Draughtsman Signature Geometry */
    --rule-width: 1px;
    --radius-none: 0px;
}


*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}


html {
    background-color: var(--ground);
    color: var(--ink);
    font-family: var(--dice-480);
    font-size: 16px;
    line-height: 1.55;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    scroll-padding-top: 2rem;
}


body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--ground);
    color: var(--ink);
    font-family: var(--dice-480);
    font-size: var(--text-base);
    line-height: 1.55;
    padding-bottom: calc(var(--dock-height) + env(safe-area-inset-bottom, 0px));
    overflow-x: hidden;
    position: relative;
}


@media (min-width: 960px) {
    body {
        padding-bottom: 0;
    }
}


img, picture, svg, video {
    display: block;
    max-width: 100%;
    height: auto;
}


input, button, textarea, select {
    font: inherit;
    color: inherit;
}


button {
    cursor: pointer;
    background: none;
    border: none;
}


a {
    color: var(--ink);
    text-decoration-skip-ink: auto;

    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    transition: color var(--duration-rapid) var(--ease-out), border-color var(--duration-rapid) var(--ease-out);
}


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


a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}


h1, h2, h3, h4, h5, h6 {
    font-family: var(--dice-cd9);
    font-weight: 700;
    line-height: 1.08;
    color: var(--ink);
    letter-spacing: -0.015em;
    text-wrap: balance;
}


h1 {
    font-size: var(--text-display);
    font-weight: 800;
    margin-bottom: var(--space-md);
}


h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-md);
}


h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
}


h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-xs);
}


p {
    max-width: var(--measure-prose);
    margin-bottom: var(--space-md);
    color: var(--ink);
}


p:last-child {
    margin-bottom: 0;
}


p.lede {
    font-size: var(--text-lead);
    line-height: 1.48;
    max-width: var(--measure-narrow);
    color: var(--ink-soft);
}


small, .text-sm {
    font-size: var(--text-sm);
    line-height: 1.4;
}


.text-xs {
    font-size: var(--text-xs);
    line-height: 1.35;
}


.font-mono {
    font-family: var(--dice-5fe);
    font-feature-settings: "tnum" 1;
}


.tabular-nums {
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum" 1;
}


/* Layout Utilities */
.shell-container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}


.shell-container-wide {
    width: 100%;
    max-width: 1440px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}


.flow > * + * {
    margin-top: var(--space-md);
}


.flow-lg > * + * {
    margin-top: var(--space-xl);
}


.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}


.skip-link {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    z-index: 9999;
    background-color: var(--ink);
    color: var(--ground);
    padding: 0.75rem 1.25rem;
    font-family: var(--dice-5fe);
    font-size: var(--text-sm);
    text-decoration: none;
    transform: translateY(-200%);
    transition: transform var(--duration-rapid) var(--ease-out);
}


.skip-link:focus {
    transform: translateY(0);
}


/* Swiss Grid Base and Structural Ledger Lines */
.ledger-grid {
    display: grid;
    grid-template-columns: 1fr;
    border-top: var(--rule-width) solid var(--line);
    border-bottom: var(--rule-width) solid var(--line);
}


.ledger-cell {
    padding: var(--space-lg);

    border-bottom: var(--rule-width) solid var(--line);
    background-color: var(--ground);
    min-width: 0;
}


.ledger-cell:last-child {
    border-bottom: none;
}


@media (min-width: 768px) {
    .ledger-grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    .ledger-grid-2 > .ledger-cell:nth-child(odd) {
        border-right: var(--rule-width) solid var(--line);
    }
    .ledger-grid-2 > .ledger-cell:nth-last-child(-n+2) {
        border-bottom: none;
    }
}


@media (min-width: 1024px) {
    .ledger-grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    .ledger-grid-3 > .ledger-cell {
        border-right: var(--rule-width) solid var(--line);
    }
    .ledger-grid-3 > .ledger-cell:nth-child(3n) {
        border-right: none;
    }

    .ledger-grid-3 > .ledger-cell:nth-last-child(-n+3) {
        border-bottom: none;
    }


    .ledger-grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
    .ledger-grid-4 > .ledger-cell {
        border-right: var(--rule-width) solid var(--line);
    }
    .ledger-grid-4 > .ledger-cell:nth-child(4n) {
        border-right: none;
    }
    .ledger-grid-4 > .ledger-cell:nth-last-child(-n+4) {
        border-bottom: none;
    }
}


.icon {
    width: 1.25em;
    height: 1.25em;
    fill: currentColor;
    display: inline-block;
    vertical-align: -0.2em;
    flex-shrink: 0;
}


/* Motion system reduction rules */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}