/* A chapter's words: what it's about, a bold statement with its points, the control the scroll moves through,
   and the status. Bold words carry the message; the rest supports them at a softer ink. The column sits
   between the nav and the rail, and scales with the window's width and height. */
.ch {
  position: absolute; top: 72px; bottom: 64px; left: clamp(28px, 6.4vw, 120px); width: clamp(360px, 36vw, 540px); z-index: 5;
  display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: clamp(14px, 2.6vh, 26px); visibility: hidden;
}
.ch[data-side="right"] { left: auto; right: clamp(28px, 6.4vw, 120px); }
.ch-head { display: flex; align-items: center; gap: 13px; }
.ch-head img { width: clamp(40px, 5.6vh, 48px); height: clamp(40px, 5.6vh, 48px); border-radius: 23%; box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22); }
.ch-head p { display: flex; flex-direction: column; gap: 2px; }
.ch-head b { font-size: 18px; font-weight: 740; letter-spacing: -0.01em; }
.ch-head span { font-size: 14px; font-weight: 560; color: var(--ink-3); text-wrap: pretty; }

/* sized by copy.js to the tallest statement, so nothing jumps and nothing overflows */
.ch-stmts { position: relative; width: 100%; height: var(--stmts-h, clamp(270px, 46vh, 430px)); }
.stmt { position: absolute; left: 0; right: 0; top: 0; visibility: hidden; }
.stmt h2 {
  font-size: clamp(32px, min(3.8vw, 6.2vh), 68px); font-weight: 820; font-stretch: 125%; line-height: 0.98; letter-spacing: -0.035em;
  margin-bottom: clamp(12px, 2.4vh, 28px); text-wrap: balance;
}
.stmt h2 .w { display: inline-block; overflow: hidden; vertical-align: top; padding: 0.04em 0 0.1em; margin: -0.04em 0 -0.1em; }
.stmt h2 .w > span { display: inline-block; will-change: transform, opacity; }
.stmt ul { list-style: none; display: grid; gap: clamp(9px, 1.6vh, 17px); }
.stmt li { --ic: clamp(32px, 4.6vh, 40px); display: grid; grid-template-columns: var(--ic) minmax(0, 1fr); gap: clamp(11px, 1.1vw, 15px); align-items: start; will-change: transform, opacity; }
.pt-ic {
  width: var(--ic); height: var(--ic); border-radius: 30%; display: grid; place-items: center; color: var(--acc);
  background: color-mix(in oklab, var(--acc) 16%, transparent); box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--acc) 24%, transparent);
}
.pt-ic .i { width: 52%; height: 52%; }
.stmt li p { --fs: clamp(14px, min(1.12vw, 2.05vh), 17.5px); padding-top: calc((var(--ic) - var(--fs) * 1.42) / 2); font-size: var(--fs); line-height: 1.42; color: rgba(var(--ink-rgb), var(--soft)); font-weight: 430; text-wrap: pretty; }
.stmt li b { color: var(--ink); font-weight: 680; }

/* the segmented control: buttons the scroll presses in turn; the ink under the thumb is a clipped second layer */
.seg { position: relative; display: inline-flex; padding: 4px; border-radius: 999px; background: var(--chip); box-shadow: inset 0 0 0 1px var(--line); }
.seg-thumb { position: absolute; left: 0; top: 4px; bottom: 4px; width: 0; border-radius: 999px; background: var(--thumb); box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18); }
.seg { --sh: clamp(32px, 4.5vh, 38px); --sp: clamp(9px, 1.05vw, 16px); --segf: clamp(12.5px, 1.02vw, 14.5px); max-width: 100%; }
.seg button { position: relative; z-index: 1; height: var(--sh); padding: 0 var(--sp); border-radius: 999px; font-size: var(--segf); font-weight: 620; white-space: nowrap; color: var(--ink-2); }
.seg button:hover { color: var(--ink); }
.seg-ink { position: absolute; inset: 0; z-index: 2; display: flex; padding: 4px; pointer-events: none; }
.seg-ink > span { height: var(--sh); padding: 0 var(--sp); display: grid; place-items: center; font-size: var(--segf); font-weight: 620; white-space: nowrap; color: var(--thumb-ink); }

/* not out yet: a status in Qiv's mint, never the thumb's filled pill */
.ch-get { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.soon { display: inline-flex; align-items: center; gap: 11px; font-size: clamp(13.5px, 1.04vw, 15px); font-weight: 640; color: var(--ink); }
.soon::before { content: ""; flex: none; width: 9px; height: 9px; border-radius: 50%; background: var(--mint); }
.ch-get small { font-size: 13px; color: var(--ink-3); max-width: 30ch; line-height: 1.35; text-wrap: pretty; }