/*
 * PairRail v2: story pages (/product, /protocols).
 *
 * Each section carries exactly one visual from the homepage system (quote card,
 * rail line, code panel, approval badge) instead of three-column text grids.
 * Loads after tokens.css, components.css, pages.css and home.css (for the fan).
 * Spec: design/stitch-v2/DESIGN.md.
 */

/* -- Section rhythm: tighter than the homepage so a story page stays scannable -- */
.pr-story-block { padding-block: var(--space-8); border-top: var(--hairline); }
@media (min-width: 1024px) { .pr-story-block { padding-block: var(--space-9); } }
.pr-story-block .pr-block-head { margin-bottom: var(--space-7); }

/* -- Hero: copy left, one visual right -- */
.pr-story-hero { display: grid; gap: var(--space-7); padding-block: var(--space-8) var(--space-8); }
.pr-story-hero .pr-eyebrow { margin-bottom: var(--space-4); }
.pr-story-hero .pr-h1 { max-width: 14em; }
.pr-story-hero .pr-lead { margin-top: var(--space-5); max-width: 34em; }
.pr-story-hero .pr-actions { margin-top: var(--space-6); }
.pr-story-hero__visual { min-width: 0; }
.pr-story-hero__caption { margin-top: var(--space-3); color: var(--color-ink-muted); font-size: var(--type-caption-size); line-height: 18px; }
@media (min-width: 1024px) {
  .pr-story-hero { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); align-items: center; gap: var(--space-8); }
}
/* Protocols hero: the fan needs the full width, so copy sits above it. */
.pr-story-hero--stacked { grid-template-columns: 1fr; gap: var(--space-6); }
.pr-story-hero--stacked .pr-home-fan { margin-top: 0; }

/* -- Split: block head left, visual right -- */
.pr-story-split { display: grid; gap: var(--space-7); }
.pr-story-split .pr-block-head { margin-bottom: 0; }
@media (min-width: 1024px) {
  .pr-story-split { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); align-items: start; gap: var(--space-8); }
  .pr-story-split--visual-left { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); }
  .pr-story-split--visual-left > :first-child { order: 2; }
}

/* Short supporting facts under a block head: a quiet list, not a card grid. */
.pr-story-facts { display: grid; gap: var(--space-4); margin: var(--space-6) 0 0; padding: 0; list-style: none; }
.pr-story-facts li { padding-top: var(--space-4); border-top: var(--hairline); color: var(--color-ink-secondary); font-size: var(--type-note-size); line-height: var(--type-note-leading); text-wrap: pretty; }
.pr-story-facts strong { display: block; color: var(--color-ink); font-weight: 600; }

/* -- Four-step rail (product "How it works") -- */
@media (min-width: 1024px) {
  .pr-story-steps pr-step-list > ol { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
/* Tablet: four columns would crush the copy, so keep the vertical rail. */
@media (min-width: 768px) and (max-width: 1023.98px) {
  .pr-story-steps pr-step-list > ol { grid-template-columns: 1fr; gap: var(--space-6); padding: 0 0 0 var(--space-7); }
  .pr-story-steps pr-step-list > ol::before,
  .pr-story-steps pr-step-list > ol::after { left: calc(var(--node) / 2 - 1px); right: auto; top: 6px; bottom: 0; width: var(--rail-width); height: auto; transform-origin: top center; }
  .pr-story-steps pr-step-list > ol > li::before { left: calc(-1 * var(--space-7)); top: 6px; }
}

/* -- Roadmap rail: not live yet, so the rail stays neutral and the label slot
   carries the status instead of a step number. -- */
.pr-story-roadmap pr-step-list > ol::after { display: none; }
.pr-story-roadmap pr-step-list > ol > li::before { border-color: var(--color-border-strong); border-style: dashed; }
.pr-story-roadmap pr-step-list > ol > li::after { content: attr(data-status); }
.pr-story-roadmap .pr-note { margin-top: var(--space-6); max-width: var(--measure-prose); }

/* -- Visual frame: one white card around a single visual (threshold list) -- */
.pr-story-frame {
  padding: var(--space-6);
  border: var(--hairline);
  border-radius: var(--radius-card);
  background: var(--color-canvas);
  box-shadow: var(--shadow-card);
}
.pr-story-frame__title { margin: 0 0 var(--space-5); color: var(--color-ink); font-size: var(--type-body-size); font-weight: 600; line-height: var(--type-body-leading); }
.pr-story-frame__meta { margin: calc(-1 * var(--space-4)) 0 var(--space-5); color: var(--color-ink-muted); font-family: var(--font-mono); font-size: var(--type-caption-size); line-height: 18px; }
.pr-story-frame__foot { margin: var(--space-5) 0 0; color: var(--color-ink-secondary); font-size: var(--type-note-size); line-height: var(--type-note-leading); }
/* Product hero: even columns so the threshold card can hold each badge beside its tier. */
@media (min-width: 1024px) { .pr-story-hero--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
/* Hero thresholds: every tier row takes the same shape. Side by side when the frame can hold
   the longest badge next to its tier name (notes may wrap), stacked otherwise; never a mix. */
.pr-story-hero .pr-story-frame { container-type: inline-size; }
@container (min-width: 450px) {
  .pr-story-hero pr-threshold-list li { flex-wrap: nowrap; }
  .pr-story-hero pr-threshold-list li > div { flex: 1 1 auto; }
  .pr-story-hero pr-threshold-list pr-approval-badge { flex: none; }
}
@container (max-width: 449.98px) {
  .pr-story-hero pr-threshold-list li { flex-direction: column; align-items: flex-start; }
}

/* -- Fan used for the stack (product) and the five rails (protocols) -- */
.pr-story-fan .pr-protocol__body code { font-size: 0.88em; }
.pr-story-fan .pr-home-fan__list > li { padding-block: var(--space-4); }
.pr-story-status {
  display: inline-flex;
  align-items: center;
  height: 22px;
  margin-left: var(--space-2);
  padding: 0 8px;
  border: var(--hairline);
  border-radius: var(--radius-pill);
  color: var(--color-ink-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  vertical-align: 2px;
}

/* -- Round 1 fixes -- */
/* The fan sits right under its block head; the homepage's extra top margin is not needed here. */
.pr-story-fan .pr-home-fan { margin-top: 0; }
.pr-story-fan__note { grid-column: 1 / -1; }
.pr-story-fan__note a,
.pr-story-fan .pr-protocol__body a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
/* Grid children must be allowed to shrink so code panels scroll inside themselves. */
.pr-story-split > * { min-width: 0; }
/* Connect stack: head left, a compact fan right. */
@media (min-width: 1024px) {
  .pr-story-split--fan { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); align-items: center; }
  .pr-story-split--fan .pr-home-fan { grid-template-columns: minmax(0, 3fr) minmax(0, 7fr); }
  .pr-story-split--fan .pr-home-fan__source { margin-right: var(--space-6); }
}

/* -- Plans: when to move up (product). Prices and limits stay on /pricing. -- */
.pr-story-stages td:first-child { color: var(--color-ink); font-weight: 600; white-space: nowrap; }
.pr-story-stages__actions { margin-top: var(--space-6); }

/* -- Site polish (12 Oct 2026) -- */
/* Quote authority: the statement band and its split read as one section, so no rule between them. */
.pr-story-authority { border-top: var(--hairline); }
.pr-story-authority .pr-statement { border-top: 0; }
.pr-story-block--joined { border-top: 0; padding-top: var(--space-7); }
.pr-story-authority .pr-block-head .pr-lead { margin-top: 0; }
/* Fan source: the sample tag sits under the catalog version. */
.pr-home-fan__source .pr-sample-tag { margin-top: var(--space-3); }

/* -- /product walkthrough film: one click-to-play video, framed like the story cards -- */
.pr-story-film__frame { margin: 0; }
.pr-story-film__frame video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; border: var(--hairline); border-radius: var(--radius-card); background: #f6f6f7; box-shadow: var(--shadow-card); }

/* -- /protocols number moment: one total, the same on every protocol -- */
.pr-number {
  margin: 0;
  padding: var(--space-6);
  border: var(--hairline);
  border-radius: var(--radius-card);
  background: var(--color-canvas);
  box-shadow: var(--shadow-card);
}
.pr-number__head { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: var(--space-2) var(--space-4); margin-bottom: var(--space-5); }
.pr-number__who { min-width: 0; margin: 0; color: var(--color-ink-muted); font: 500 var(--type-caption-size) / 18px var(--font-mono); font-variant-numeric: tabular-nums; }
/* The five protocol pills, each with a small green check, with the label under them. The card is
   too narrow for pills and label on one line, so they stack at every width; the pills wrap last. */
.pr-number__match {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  margin: var(--space-7) 0 0;
  padding-top: var(--space-5);
  border-top: var(--hairline);
}
.pr-number__protos { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.pr-number__protos li {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 26px;
  padding: 2px 10px 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-sunken);
  color: var(--color-ink);
  font: 600 12px / 1.3 var(--font-mono);
  white-space: nowrap;
}
.pr-number__protos li::before {
  content: "";
  width: 12px;
  height: 12px;
  flex: none;
  background: var(--color-live-solid);
  -webkit-mask: var(--icon-live) center / contain no-repeat;
  mask: var(--icon-live) center / contain no-repeat;
}
.pr-number__match-label { margin: 0; color: var(--color-ink-secondary); font: 500 var(--type-caption-size) / 18px var(--font-sans); }
@media (max-width: 479.98px) {
  .pr-number { padding: var(--space-5) var(--space-4); }
  .pr-number__protos li { padding-inline: 8px 9px; }
}
/* Product hero frame: title and sample tag share one row and wrap rather than overlap. */
.pr-story-frame__head { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: var(--space-2) var(--space-4); margin-bottom: var(--space-5); }
.pr-story-frame__head .pr-story-frame__title { min-width: 0; margin: 0; }