/* ── paper chapters: toolkit · cycle · faq ─────────── */

/* ===== toolkit (sticky phone + feature ledger) ===== */
.toolkit-label { display: block; margin-bottom: 40px; }
.toolkit-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 120px); align-items: start; }
.phone-col { position: sticky; top: 12vh; display: grid; justify-items: center; gap: 18px; }
.phone {
  width: min(280px, 100%); border-radius: 34px; padding: 18px;
  background: var(--white); border: 1px solid var(--line);
  box-shadow: var(--shadow-card), inset 0 0 0 6px var(--paper);
  display: grid; grid-template-rows: auto 1fr auto auto; gap: 12px;
}
.phone-top { display: flex; justify-content: space-between; align-items: baseline; font-size: var(--t-micro); color: var(--mute); }
.phone-top b { font-weight: 500; color: var(--ink); letter-spacing: -.02em; }
.phone-shot { border-radius: 14px; overflow: hidden; background: var(--paper); aspect-ratio: 2 / 3; } /* the whole look (21 Oct) */
.phone-shot img { width: 100%; height: 100%; object-fit: cover; transition: opacity var(--normal); }
.phone-shot img.is-swapping { opacity: 0; }
.phone-rows { display: grid; gap: 8px; font-size: var(--t-micro); }
.phone-rows li { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px; color: var(--mute); }
.phone-rows b { font-weight: 500; color: var(--ink); font-size: 1rem; }
.phone-rows i { width: 90px; height: 4px; border-radius: 2px; background: var(--line); position: relative; overflow: hidden; }
.phone-rows i::after { content: ""; position: absolute; inset: 0; background: var(--ink); transform: scaleX(var(--v)); transform-origin: left; }
.phone-foot { font-size: .75rem; color: var(--mute); border-top: 1px solid var(--line); padding-top: 8px; }
.phone-name { font-size: var(--t-small); font-weight: 500; }

.tool-col .h2 { margin-bottom: 48px; }
.tool-col { padding-bottom: clamp(200px, 46vh, 520px); } /* room so the phone stays pinned while the last feature is active */
.tools { display: grid; gap: 12px; }
.tool {
  border-radius: 14px; border: 1px solid transparent;
  transition: background var(--normal), border-color var(--normal), transform var(--normal) var(--ease-out);
}
/* 21 Oct (QA P1-7): each row is a button, reachable by keyboard */
.tool-btn { display: grid; grid-template-columns: 28px 64px 1fr; gap: 18px; align-items: center; width: 100%; text-align: left; padding: 22px 22px 22px 16px; border-radius: 14px; }
.tool:hover { background: color-mix(in oklab, var(--paper) 60%, transparent); }
.tool.is-active { background: var(--paper); border-color: var(--line); }
.tool-n { font-size: var(--t-micro); color: var(--mute); }
.tool-ico { display: grid; width: 64px; height: 64px; border-radius: 12px; background: var(--white); border: 1px solid var(--line); display: grid; place-items: center; }
.tool-ico svg { width: 26px; height: 26px; fill: none; stroke: var(--ink); stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round; }
.tool b { font-weight: 500; font-size: var(--t-body); display: block; }
.tool .tool-p { display: block; font-size: var(--t-small); color: var(--mute); margin-top: 6px; max-width: 46ch; }

/* ===== cycle ===== */
.cycle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.cycle-h {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: var(--t-h3); font-weight: 400; letter-spacing: -.02em; margin-bottom: 18px;
  border-bottom: 1px solid var(--line); padding-bottom: 12px;
}
.cycle-h em { font-style: italic; }
.cycle-h span { font-size: 1rem; }
.deck {
  position: relative; height: clamp(420px, 56vh, 620px); border-radius: 18px; overflow: hidden;
  background: var(--studio);
  background-image: radial-gradient(rgba(255,255,255,.09) 1px, transparent 1.2px); background-size: 16px 16px;
}
.deck-tools { position: absolute; top: 14px; left: 50%; translate: -50% 0; display: flex; gap: 6px; z-index: 2; font-size: var(--t-micro); color: var(--chalk-dim); pointer-events: none; opacity: .55; }
.deck-tools span { padding: 4px 10px; border-radius: 6px; background: rgba(255,255,255,.06); border: 1px solid var(--line-d); }
.deck-track {
  position: absolute; left: 50%; top: 50%; translate: -50% -50%;
  display: grid; grid-template-columns: repeat(3, 170px); gap: 14px; will-change: transform;
}
.deck-track img { width: 170px; height: 255px; object-position: 50% 0; object-fit: cover; border-radius: 6px; filter: grayscale(1) contrast(1.05); opacity: .9; }
.deck-track img:nth-child(5) { filter: none; opacity: 1; box-shadow: 0 0 0 1px var(--line-d2), var(--shadow-float); }

.ledger { position: relative; height: clamp(420px, 56vh, 620px); border-radius: 18px; background: var(--paper); border: 1px solid var(--line); display: grid; place-items: center; overflow: hidden; }
.ledger-card {
  position: absolute; width: min(270px, 74%); border-radius: 14px; background: var(--white);
  border: 1px solid var(--line); padding: 14px; box-shadow: var(--shadow-card);
  transition: transform var(--slow) var(--ease-out), opacity var(--slow);
}
.ledger-card--grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ledger-card--grid img { width: 100%; aspect-ratio: 1; object-fit: contain; background: #fff; border-radius: 8px; }
/* 21 Oct (QA P0-5/P0-8): real links to the app; the grid card's sits at its top, clear of the order card over its corner */
.ledger-btn { grid-column: 1 / -1; margin-top: 4px; padding: 10px; border-radius: 999px; border: 1px solid var(--line-2); font-size: var(--t-micro); background: var(--white); display: block; text-align: center; color: var(--ink); transition: background var(--fast), color var(--fast); }
.ledger-btn:hover { background: var(--ink); color: var(--white); }
.ledger-card--grid .ledger-btn { order: -1; margin: 0 0 4px; }
.ledger-btn--dark { background: var(--ink); color: var(--white); border-color: var(--ink); }
.ledger-btn--dark:hover { background: var(--ink-2); }
.ledger-card--order { transform: translate(16%, 30%) rotate(3deg); opacity: 0; }
.ledger.is-in .ledger-card--order { transform: translate(20%, 24%) rotate(0); opacity: 1; }
.ledger.is-in .ledger-card--grid { transform: translate(-18%, -11%); }
.order-head { display: flex; gap: 10px; align-items: center; }
.order-head img { width: 44px; height: 44px; border-radius: 8px; object-fit: cover; }
.order-head b { font-size: var(--t-small); font-weight: 500; display: block; }
.order-head span { font-size: var(--t-micro); color: var(--mute); }
.order-bar { display: grid; gap: 6px; margin-top: 14px; font-size: var(--t-micro); color: var(--mute); }
.order-bar i { display: block; height: 4px; border-radius: 2px; background: var(--line); position: relative; overflow: hidden; }
.order-bar i::after { content: ""; position: absolute; inset: 0; background: var(--lime); transform: scaleX(var(--v)); transform-origin: left; }
.order-meta { display: flex; justify-content: space-between; font-size: var(--t-micro); color: var(--mute); margin: 14px 0; }

/* ===== faq ===== */
.faq-rail {
  display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
  padding: 4px calc((100% - min(1100px, 100%)) / 2) 24px;
  margin: 0 calc(var(--gutter) * -1); padding-left: var(--gutter); padding-right: var(--gutter);
  scroll-padding-inline: var(--gutter); /* the first card rests at the start, so "previous" knows it is there */
}
.faq-rail::-webkit-scrollbar { display: none; }
.qa {
  flex: 0 0 min(360px, 82vw); scroll-snap-align: start;
  border-radius: 18px; background: var(--paper); border: 1px solid var(--line); padding: 18px;
  display: grid; grid-template-rows: auto auto 1fr; gap: 14px; min-height: 260px;
}
.q { justify-self: start; font-size: var(--t-small); font-weight: 500; padding: 8px 12px; border-radius: 14px 14px 14px 4px; background: var(--white); border: 1px solid var(--line); color: var(--ink); max-width: 90%; }
.a { justify-self: end; font-size: var(--t-small); padding: 12px 14px; border-radius: 14px 14px 4px 14px; background: var(--ink); color: var(--chalk); max-width: 88%; line-height: 1.45; }
.qa footer { align-self: end; display: flex; gap: 10px; align-items: center; font-size: var(--t-micro); color: var(--ink); }
.qa footer img { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; object-position: 50% 8%; }
.qa footer i { font-style: normal; color: var(--mute); margin-right: 6px; }
.faq-nav { display: flex; justify-content: center; gap: 8px; margin-top: 8px; }
.faq-nav button { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line-2); font-size: 1.1rem; display: grid; place-items: center; transition: background var(--fast), color var(--fast); }
.faq-nav button:hover:not(:disabled) { background: var(--ink); color: var(--white); }
.faq-nav button:disabled { opacity: .35; cursor: default; }
.faq-nav { align-items: center; }
.faq-count { min-width: 4.5ch; text-align: center; font-size: var(--t-micro); color: var(--mute); font-variant-numeric: tabular-nums; }

@media (max-width: 900px) {
  .toolkit-grid, .cycle-grid { grid-template-columns: 1fr; }
  .phone-col { position: static; }
  .tool-col { padding-bottom: 0; } /* 21 Oct (QA P0-4): the room for the sticky phone, only where it is sticky */
  .tool-btn { grid-template-columns: 24px 48px 1fr; gap: 12px; padding: 16px 12px; }
  .tool-ico { width: 48px; height: 48px; }
  .deck-track { grid-template-columns: repeat(3, 120px); }
  .deck-track img { width: 120px; height: 180px; }
}
/* 21 Oct (QA P0-5): on a phone the two ledger cards stack instead of overlapping (the order card ran off the edge) */
@media (max-width: 600px) {
  .ledger { height: auto; display: grid; gap: 12px; padding: 16px; place-items: stretch; }
  .ledger-card, .ledger.is-in .ledger-card--order, .ledger.is-in .ledger-card--grid,
  .reduced .ledger .ledger-card--order, .reduced .ledger .ledger-card--grid { position: relative; width: 100%; transform: none; opacity: 1; }
}