:root {
    color-scheme: light dark;

    --color-page: #F5F2EA;
    --color-paper: #FAF8F2;
    --color-ink: #14171C;
    --color-ink-soft: #2A2F38;
    --color-muted: #545860;
    --color-rule: #C9C3B2;
    --color-rule-soft: #DDD7C6;
    --color-accent: #1E3A5F;
    --color-accent-hover: #0F2540;
    --color-tint: #ECE7D7;
    --color-focus: #1E3A5F;

    --font-serif: ui-serif, "Iowan Old Style", "Apple Garamond", Baskerville, "Times New Roman", "Droid Serif", Times, "Source Serif Pro", serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;

    --max-width: 760px;
    --space-page: 24px;
    --space-section: 56px;
}

@media (min-width: 760px) {
    :root {
        --space-page: 64px;
        --space-section: 96px;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-page: #0E1116;
        --color-paper: #14181F;
        --color-ink: #F2EFE6;
        --color-ink-soft: #D6D2C5;
        --color-muted: #8E8E8E;
        --color-rule: #2F343D;
        --color-rule-soft: #232830;
        --color-accent: #B6CFEE;
        --color-accent-hover: #D4E2F4;
        --color-tint: #1A1F27;
        --color-focus: #B6CFEE;
    }
}

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

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    background-color: var(--color-page);
    color: var(--color-ink);
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-page);
}

.skip-link {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus {
    position: static;
    width: auto;
    height: auto;
    display: inline-block;
    margin: 1rem;
    padding: 0.5rem 1rem;
    background: var(--color-ink);
    color: var(--color-page);
    text-decoration: none;
}

/* --- Masthead -------------------------------------------------------- */

.masthead {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 28px 0 24px;
    border-bottom: 1px solid var(--color-rule);
}

.masthead-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--color-ink);
    text-decoration: none;
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.masthead-brand:hover {
    color: var(--color-ink);
}

.monogram {
    display: inline-block;
    width: 30px;
    height: 30px;
    flex-shrink: 0;
}

.monogram path,
.monogram line {
    stroke: var(--color-ink);
    stroke-width: 2.4;
}

.masthead-meta {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-variant-numeric: tabular-nums;
}

.masthead-meta .sep {
    margin: 0 0.5em;
    color: var(--color-rule);
}

@media (max-width: 520px) {
    .masthead-meta .meta-extra {
        display: none;
    }
}

/* --- Hero ----------------------------------------------------------- */

.hero {
    padding: clamp(56px, 9vw, 112px) 0 clamp(40px, 7vw, 80px);
}

.hero-mark {
    margin: 0 0 1.5rem;
    font-family: var(--font-serif);
    font-size: clamp(3.5rem, 12vw, 6.5rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 0.95;
    color: var(--color-ink);
}

.hero-mark .stop {
    color: var(--color-accent);
}

.hero-lede {
    max-width: 28em;
    margin: 0 0 0.5rem;
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2.4vw, 1.5rem);
    font-weight: 400;
    line-height: 1.45;
    color: var(--color-ink-soft);
}

.hero-fine {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
}

/* --- Sections ------------------------------------------------------- */

main {
    display: block;
}

.section {
    padding-top: clamp(40px, 7vw, 72px);
    padding-bottom: 8px;
}

.section-label {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 0 0 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.section-label .num {
    color: var(--color-accent);
    font-variant-numeric: tabular-nums;
}

.section-label .tick {
    flex: 1;
    height: 1px;
    background: var(--color-rule);
}

.section h2 {
    margin: 0 0 1.25rem;
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3.4vw, 2.25rem);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.015em;
    color: var(--color-ink);
}

.section p,
.section li {
    color: var(--color-ink-soft);
}

.section p {
    margin: 0 0 1rem;
    max-width: 36em;
}

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

/* --- Product card --------------------------------------------------- */

.product {
    position: relative;
    margin-top: 1.5rem;
    padding: 32px 28px 28px;
    background: var(--color-paper);
    border: 1px solid var(--color-rule);
    border-radius: 2px;
}

.product::before {
    content: "";
    position: absolute;
    inset: 5px;
    border: 1px solid var(--color-rule-soft);
    border-radius: 1px;
    pointer-events: none;
}

.product-eyebrow {
    position: relative;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.product-name {
    position: relative;
    margin: 0.5rem 0 0.75rem;
    font-family: var(--font-serif);
    font-size: 1.625rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-ink);
}

.product-desc {
    position: relative;
    margin: 0 0 1.25rem;
    color: var(--color-ink-soft);
    max-width: 36em;
}

.product-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid var(--color-accent);
    padding-bottom: 1px;
}

.product-link .arrow {
    transition: transform 180ms ease;
}

.product-link:hover {
    color: var(--color-accent-hover);
    border-bottom-color: var(--color-accent-hover);
}

.product-link:hover .arrow {
    transform: translateX(4px);
}

/* --- Contact list --------------------------------------------------- */

.contact-list {
    list-style: none;
    margin: 1.25rem 0 0;
    padding: 0;
    border-top: 1px solid var(--color-rule-soft);
}

.contact-list li {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 1.25rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--color-rule-soft);
}

.contact-list .label {
    flex: 0 0 11em;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.contact-list a {
    font-feature-settings: "tnum" 1;
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

.contact-list a:hover {
    color: var(--color-accent-hover);
    border-bottom-color: var(--color-accent-hover);
}

@media (max-width: 540px) {
    .contact-list li {
        flex-direction: column;
        gap: 0.25rem;
    }

    .contact-list .label {
        flex-basis: auto;
    }
}

/* --- Inline links --------------------------------------------------- */

a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration-thickness: 2px;
}

:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 3px;
    border-radius: 2px;
}

/* --- Colophon (footer) ---------------------------------------------- */

.colophon {
    margin-top: clamp(56px, 9vw, 96px);
    padding: 32px 0 48px;
    border-top: 1px solid var(--color-rule);
    color: var(--color-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

.colophon-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px 40px;
}

@media (min-width: 640px) {
    .colophon-grid {
        grid-template-columns: 1.4fr 1fr 1fr;
    }
}

.colophon-block dt {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 0.5rem;
}

.colophon-block dd {
    margin: 0 0 0.25rem;
    color: var(--color-ink-soft);
    font-variant-numeric: tabular-nums;
}

.todo {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 2px;
    background: var(--color-tint);
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.06em;
}

.colophon-block dd a {
    color: var(--color-ink-soft);
    text-decoration: none;
    border-bottom: 1px solid var(--color-rule);
}

.colophon-block dd a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.colophon-base {
    margin-top: 36px;
    padding-top: 20px;
    border-top: 1px solid var(--color-rule);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.colophon-base nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
}

.colophon-base nav a {
    color: var(--color-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

.colophon-base nav a:hover {
    color: var(--color-ink);
    border-bottom-color: var(--color-ink);
}

/* --- Legal pages ---------------------------------------------------- */

.legal-content {
    padding-top: clamp(64px, 10vw, 112px);
}

.legal-content h1 {
    margin: 0 0 0.75rem;
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 3.25rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--color-ink);
}

.legal-content .doc-meta {
    margin: 0 0 2.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.legal-content h2 {
    margin: 2.5rem 0 0.75rem;
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--color-ink);
}

.legal-content h2:first-of-type {
    margin-top: 0;
}

.legal-content p {
    color: var(--color-ink-soft);
    margin: 0 0 1rem;
    max-width: 36em;
}

.legal-content ul,
.legal-content ol {
    color: var(--color-ink-soft);
    padding-left: 1.5rem;
}

.legal-content li {
    margin-bottom: 0.5rem;
}

.legal-content .placeholder {
    padding: 20px 24px;
    margin: 1.5rem 0;
    border-left: 3px solid var(--color-accent);
    background: var(--color-tint);
    color: var(--color-ink-soft);
    font-size: 0.9375rem;
    border-radius: 0 2px 2px 0;
}

.legal-content .back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

.legal-content .back:hover {
    color: var(--color-ink);
    border-bottom-color: var(--color-ink);
}