/* ========================================================================== base.css — reset, elements, typography primitives, shared utilities. Owned by the lead. ========================================================================== */ *, *::before, *::after { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h, 56px) + var(--s-4)); /* `clip`, not `hidden`: `hidden` makes overflow-y compute to `auto`, turns into a scroll container and silently kills position:sticky. */ overflow-x: clip; } body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-display); font-size: var(--fs-body); line-height: var(--lh-body); font-weight: 400; font-synthesis-weight: none; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; overflow-x: hidden; overflow-wrap: break-word; } h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, ul, ol { margin: 0; } ul, ol { padding: 0; list-style: none; } h1, h2, h3, h4 { font-weight: 700; line-height: var(--lh-head); letter-spacing: var(--ls-head); text-wrap: balance; } h1 { font-size: var(--fs-h1); } h2 { font-size: var(--fs-h2); } h3 { font-size: var(--fs-h3); } h4 { font-size: var(--fs-h4); } p { text-wrap: pretty; } a { color: inherit; text-decoration-color: color-mix(in srgb, currentColor 38%, transparent); text-underline-offset: 0.18em; text-decoration-thickness: from-font; transition: color var(--dur-1) var(--ease-out), text-decoration-color var(--dur-1) var(--ease-out); } a:hover { text-decoration-color: currentColor; } img, picture, video, svg { display: block; max-width: 100%; height: auto; } img { background-color: color-mix(in srgb, var(--fg) 6%, transparent); } button, input, select, textarea { font: inherit; color: inherit; margin: 0; } button { background: none; border: 0; cursor: pointer; } table { border-collapse: collapse; width: 100%; } hr { border: 0; border-top: var(--hairline) solid var(--rule-c); margin: 0; } ::selection { background: var(--lcd); color: var(--lcd-seg); } :focus-visible { outline: 2px solid var(--signal-c); outline-offset: 2px; border-radius: var(--r-sm); } /* -------------------------------------------------------------------------- Utilities -------------------------------------------------------------------------- */ .visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; } .skip-link { position: absolute; top: var(--s-2); left: var(--s-2); z-index: var(--z-toast); padding: var(--s-3) var(--s-5); background: var(--ink); color: var(--paper); font-family: var(--font-mono); font-size: var(--fs-small); border-radius: var(--r-sm); transform: translateY(calc(-100% - var(--s-4))); transition: transform var(--dur-2) var(--ease-out); } .skip-link:focus-visible { transform: translateY(0); } .mono { font-family: var(--font-mono); font-feature-settings: 'tnum' 1; } .tnum { font-variant-numeric: tabular-nums; } .eyebrow { font-family: var(--font-mono); font-size: var(--fs-micro); font-weight: 500; letter-spacing: var(--ls-label); text-transform: uppercase; color: var(--fg-3); display: flex; align-items: center; gap: var(--s-3); } .eyebrow::before { content: ''; inline-size: var(--s-6); block-size: 1px; background: currentColor; flex: none; opacity: 0.6; } .eyebrow--plain::before { content: none; } .lead { font-size: var(--fs-lead); line-height: 1.5; color: var(--fg-2); max-width: var(--measure); } .prose { max-width: var(--measure); } .prose p + p { margin-top: var(--s-5); } .stack > * + * { margin-top: var(--flow, var(--s-5)); } .stack-2 > * + * { margin-top: var(--s-2); } .stack-3 > * + * { margin-top: var(--s-3); } .stack-4 > * + * { margin-top: var(--s-4); } .stack-6 > * + * { margin-top: var(--s-6); } .stack-8 > * + * { margin-top: var(--s-8); } .stack-12 > * + * { margin-top: var(--s-12); } .text-fg2 { color: var(--fg-2); } .text-fg3 { color: var(--fg-3); } /* -------------------------------------------------------------------------- Buttons -------------------------------------------------------------------------- */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--s-3); min-block-size: var(--tap); padding: var(--s-3) var(--s-6); border-radius: var(--r-pill); font-family: var(--font-mono); font-size: var(--fs-small); font-weight: 500; letter-spacing: 0.02em; text-decoration: none; border: var(--hairline) solid transparent; cursor: pointer; transition: background-color var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out), transform var(--dur-1) var(--ease-out); -webkit-tap-highlight-color: transparent; } .btn:active { transform: translateY(1px); } .btn--primary { background: var(--fg); color: var(--bg); } .btn--primary:hover { background: color-mix(in srgb, var(--fg) 86%, var(--signal-c)); } .btn--ghost { border-color: var(--rule-c); color: var(--fg); background: transparent; } .btn--ghost:hover { border-color: var(--fg); background: color-mix(in srgb, var(--fg) 5%, transparent); } .btn--quiet { padding-inline: var(--s-3); color: var(--fg-2); } .btn--quiet:hover { color: var(--fg); } .btn[aria-disabled='true'], .btn:disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; } /* -------------------------------------------------------------------------- Reveal on scroll — driven by app.js. Safe by default: if JS never runs, content is fully visible. -------------------------------------------------------------------------- */ html[data-js='on'][data-motion='full'] .reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--dur-4) var(--ease-out), transform var(--dur-4) var(--ease-out); transition-delay: var(--reveal-delay, 0ms); } html[data-js='on'][data-motion='full'] .reveal.is-in { opacity: 1; transform: none; } /* -------------------------------------------------------------------------- Reduced motion -------------------------------------------------------------------------- */ @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; scroll-behavior: auto !important; } .reveal { opacity: 1 !important; transform: none !important; } } @media (prefers-contrast: more) { :root { --rule: #8d887c; --rule-night: #5c605a; --ink-3: #4a4843; --snow-3: #b9beb4; } } @media print { .band--night { background: #fff !important; color: #000 !important; } .no-print { display: none !important; } }