/* Reset, type, layout and controls. No look of its own beyond the tokens. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font-text); font-size: var(--step-body); line-height: 1.5; font-kerning: normal; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
h1, h2, h3, h4, p, figure, blockquote, ul, ol, dl, dd { margin: 0; }
ul[class], ol[class] { padding: 0; list-style: none; }
img, video, svg, canvas { display: block; max-width: 100%; }
img, video { height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; }
:target { scroll-margin-top: calc(var(--header-h) + 1rem); }
::selection { background: var(--ink); color: var(--bg); }
:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }

/* type */
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; line-height: 1.02; text-wrap: balance; hyphens: none; font-optical-sizing: auto; }
.head { font-size: var(--step-head); line-height: 1; letter-spacing: -0.025em; }
.lead { font-size: var(--step-lead); line-height: 1.35; max-width: 42ch; }
.small { font-size: var(--step-small); line-height: 1.45; }
.muted { color: var(--muted); }
p { max-width: 64ch; text-wrap: pretty; }
p + p { margin-top: 0.9em; }
.nums { font-variant-numeric: tabular-nums; }

/* layout */
.wrap { padding-inline: var(--margin); }
.section { padding-block: calc(var(--section) / 2); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: absolute; left: var(--margin); top: 0.75rem; z-index: 100; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); padding: 0; background: var(--ink); color: var(--bg); border-radius: var(--radius); }
.skip-link:focus { width: auto; height: auto; clip-path: none; padding: 0.6rem 1rem; }

/* controls */
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: 0 1.4rem; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: var(--radius); font-weight: 500; text-decoration: none; white-space: nowrap; transition: transform var(--t-press) var(--ease-out), background-color var(--t-hover) ease, color var(--t-hover) ease; }
.button:active { transform: scale(0.97); }
.button--small { min-height: 2.5rem; padding: 0 1rem; font-size: var(--step-small); }
.button--light { background: var(--dark-ink); color: var(--dark); }
.button--outline { background: var(--surface); color: var(--ink); }
.link { text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 0.2em; text-decoration-thickness: 0.07em; transition: text-decoration-color var(--t-hover) ease; }
.link-plain { text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 0.07em; }
@media (hover: hover) and (pointer: fine) {
  .button:hover { background-color: var(--accent-strong); }
  .button--light:hover { background-color: #ffffff; }
  .link:hover { text-decoration-color: currentColor; }
}
.field { width: 100%; min-height: 3rem; padding: 0.7rem 0.9rem; background: var(--surface); border: 0; border-radius: var(--radius); font-size: max(1rem, var(--step-body)); color: var(--ink); }
.field::placeholder { color: var(--muted); opacity: 1; }

/* motion helpers: content stays visible without JavaScript and under reduced motion */
.shutter { overflow: clip; } /* the scaled picture must not widen the page before it opens */
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 700ms var(--ease-expo), transform 900ms var(--ease-expo); transition-delay: calc(var(--i, 0) * 80ms); }
  .js [data-reveal].is-in { opacity: 1; transform: none; }
  .js .shutter[data-reveal] { opacity: 1; transform: none; clip-path: inset(0 0 100% 0); transition: clip-path 1100ms var(--ease-in-out); }
  .js .shutter[data-reveal] img { transform: scale(1.12); transition: transform 1500ms var(--ease-soft); }
  .js .shutter[data-reveal].is-in { clip-path: inset(0); }
  .js .shutter[data-reveal].is-in img { transform: none; }
}