/* Landing composition. Shared legal/support styles remain in layout.css.
 * Rhythm: label within a thought, section between copy/actions, page between
 * demo stages, block between subjects. Each parent owns its children's gaps.
 */
.landing-story {
  --story-title: clamp(2.25rem, 5.4vw, 4.5rem);
  --story-heading: clamp(1.75rem, 3.5vw, 2.75rem);
  --gutter: 20px;
}
.landing-story .site-header {
  position: relative;
  border: 0;
}
.landing-story .site-header__bar {
  min-height: 88px;
}
.landing-story .site-nav__link {
  font-weight: var(--fw-regular);
  font-size: var(--fs-sub);
}
.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: center;
  gap: var(--space-page);
  padding-block: var(--space-page);
}
.intro__copy {
  display: grid;
  min-width: 0;
  justify-items: start;
  gap: var(--space-section);
}
.intro h1 {
  font-size: var(--story-title);
  font-weight: var(--fw-medium);
  line-height: 1.12;
}
.intro__description {
  max-width: 39rem;
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  text-wrap: pretty;
}
.intro__reading {
  max-width: 39rem;
  color: var(--ink);
  text-wrap: pretty;
}
.intro__reading a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}
.intro__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-section);
}
.demo-link {
  display: inline-flex;
  gap: var(--space-label);
  align-items: center;
  min-height: var(--tap-min);
  font-size: var(--fs-sub);
  text-decoration: none;
}
.demo-link:hover {
  text-decoration: underline;
}
.slip-story {
  display: grid;
  gap: var(--space-section);
}
.slip-story__flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-label);
  align-items: center;
  padding: var(--space-section);
  background: var(--inset);
  border-radius: var(--radius-card-lg);
}
.slip-story__input {
  width: 80%;
}
.slip-story__output {
  width: 88%;
  justify-self: end;
}
.slip-story__input,
.slip-story__output {
  display: grid;
  gap: var(--space-section);
  min-width: 0;
}
.story-label {
  display: flex;
  align-items: center;
  gap: var(--space-label);
  color: var(--text-secondary);
  font-size: var(--fs-caption);
}
.story-label span {
  color: var(--ink);
}
/* The sample slip: the structure every Thai bank slip shares, and the one the
 * demo slips inside the app captures use. Status and time, sender, arrow,
 * recipient, then reference, amount and fee beside the verification QR. The
 * bank is the fixture's invented River Bank, so its colour is the app's
 * transfer family, never a real bank's. The slip is the one raised object in
 * the demonstration. It owns its internal padding; the flow owns every gap.
 */
.bank-slip {
  --slip-accent: var(--feature-transfer-ink);
  --slip-rule: color-mix(in srgb, var(--feature-transfer-ink) 24%, transparent);
  position: relative;
  display: grid;
  gap: var(--space-group);
  padding: var(--space-section) var(--space-section) var(--space-group);
  overflow: hidden;
  background: color-mix(in srgb, var(--feature-transfer-tint) 42%, var(--paper));
  border-radius: var(--radius-card);
  box-shadow: var(--elev-raised);
  font-size: var(--fs-caption);
  line-height: 1.45;
  transform: rotate(-2deg);
}
/* A slip's tight leading: Latin 1.45 on the English page. The Thai page's slip
 * carries Thai labels (THAI-HERO-SLIP, 2026-09-24), and Thai stacks marks above
 * and below the line, so it takes 1.6. Both beat base.css's 1.85 for Thai-page
 * paragraphs, which would stop the slip looking like a slip. */
.bank-slip :is(p, dt, dd) {
  line-height: 1.45;
}
.bank-slip :is(p, dt, dd):lang(th) {
  line-height: 1.6;
}
.bank-slip__status {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-label);
  padding-bottom: var(--space-group);
  border-bottom: 1px solid var(--slip-rule);
}
.bank-slip__heading {
  display: grid;
  gap: var(--space-tight);
  padding-left: var(--space-label);
  border-left: 4px solid var(--slip-accent);
  color: var(--text-secondary);
}
.bank-slip__title {
  color: var(--ink);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
}
.bank-slip__badge {
  display: grid;
  place-items: center;
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-tile);
  background: var(--slip-accent);
  color: var(--paper);
  font-weight: var(--fw-semibold);
}
.bank-slip__parties {
  display: grid;
  gap: var(--space-related);
}
.bank-slip__party {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: start;
  gap: var(--space-label);
}
.bank-slip__party p {
  overflow-wrap: anywhere;
}
.bank-slip__avatar {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 2px solid var(--slip-accent);
  border-radius: 50%;
  color: var(--slip-accent);
}
.bank-slip__avatar--shop {
  border: 1px solid var(--hairline);
  background: var(--paper);
  color: var(--text-secondary);
}
.bank-slip__down {
  display: grid;
  place-items: center;
  width: 40px;
  color: var(--text-secondary);
}
.bank-slip__avatar svg,
.bank-slip__down svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.bank-slip__label {
  color: var(--text-secondary);
  font-size: var(--fs-eyebrow);
}
.bank-slip__name {
  font-weight: var(--fw-medium);
}
/* The reference spans the slip; amount and fee sit beside the QR, as on a
 * real slip. The list's rows are the grid's own items (the slip is one image
 * to assistive technology, so the list needs no semantics of its own). */
.bank-slip__foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto auto;
  align-items: start;
  gap: var(--space-related) var(--space-label);
  padding-top: var(--space-group);
  border-top: 1px solid var(--slip-rule);
}
.bank-slip__foot dl {
  display: contents;
}
.bank-slip__ref {
  grid-column: 1 / -1;
}
.bank-slip__foot dt {
  color: var(--text-secondary);
  font-size: var(--fs-eyebrow);
}
.bank-slip__foot dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.bank-slip__amount {
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-semibold);
  overflow-wrap: normal;
  white-space: nowrap;
}
.bank-slip__verify {
  grid-column: 2;
  grid-row: 2 / span 2;
  display: grid;
  justify-items: center;
  gap: var(--space-tight);
  padding: var(--space-related);
  background: var(--paper);
  border-radius: var(--radius-chip);
  color: var(--text-secondary);
  font-size: var(--fs-eyebrow);
}
.bank-slip__qr {
  display: block;
  width: 72px;
  height: 72px;
  fill: var(--ink);
  shape-rendering: crispEdges;
}
/* A slip narrow for its text size (a small phone, or large text) keeps the
 * amount on one line by moving the QR under the rows. The breakpoint is in rem,
 * so it follows the reader's text size. */
.bank-slip {
  container-type: inline-size;
}
@container (max-width: 14.5rem) {
  .bank-slip__foot {
    grid-template-columns: minmax(0, 1fr);
  }
  .bank-slip__verify {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }
}
.flow-arrow {
  font-size: 1.5rem;
  color: var(--text-secondary);
  justify-self: center;
  transform: rotate(90deg);
  line-height: 1;
}
.transaction-preview {
  display: grid;
  gap: var(--space-group);
  padding: var(--space-section);
  border-radius: var(--radius-card);
  background: var(--paper);
  border: 1px solid var(--hairline);
}
.transaction-preview__heading {
  display: flex;
  justify-content: space-between;
  gap: var(--space-related);
  color: var(--text-secondary);
  font-size: var(--fs-caption);
}
.transaction-preview__row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-label);
  align-items: center;
}
.transaction-preview__row > div {
  display: grid;
  gap: var(--space-tight);
}
.transaction-preview__row strong {
  font-weight: var(--fw-medium);
  font-size: var(--fs-body-lg);
}
.shop-monogram {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--category-grocery-tint);
  color: var(--category-grocery-ink);
  border-radius: var(--radius-tile);
}
.transaction-preview__money {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: var(--fs-body-lg);
}
.transaction-preview__category {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-label);
  border-top: 1px solid var(--hairline);
  padding-top: var(--space-group);
  font-size: var(--fs-caption);
}
.category-chip {
  display: inline-flex;
  padding: var(--space-tight) var(--space-label);
  border-radius: var(--radius-chip);
  color: var(--category-grocery-ink);
  background: var(--category-grocery-tint);
}
.story-check,
.slip-story > figcaption {
  color: var(--text-secondary);
  font-size: var(--fs-caption);
}
.slip-story > figcaption {
  text-align: center;
}
.product-story {
  display: grid;
  gap: var(--space-page);
  padding-block: var(--space-block);
}
.story-heading {
  display: grid;
  gap: var(--space-label);
  text-align: center;
}
.story-heading h2,
.closing h2 {
  font-size: var(--story-heading);
}
.story-heading p {
  color: var(--text-secondary);
}
.story-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-related);
  flex-wrap: wrap;
}
.story-tabs a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: var(--tap-min);
  padding: var(--space-related) var(--space-section);
  color: var(--link);
  border-radius: var(--radius-pill);
  border: 1px solid var(--hairline);
  font-size: var(--fs-sub);
  text-decoration: none;
  transition: background-color var(--dur-quick) var(--ease-standard);
}
.story-tabs a:hover {
  background: var(--accent-tint);
}
.story-tabs a[aria-selected="true"] {
  background: var(--button-fill);
  border-color: var(--button-fill);
  color: var(--on-button-fill);
}
.story-panels {
  display: grid;
  gap: var(--space-page);
}
.story-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: var(--space-block);
  padding: var(--space-page) var(--space-block);
}
.story-panel[hidden] {
  display: none;
}
.story-panel__copy {
  display: grid;
  gap: var(--space-section);
  max-width: 26rem;
}
.story-panel__copy h3 {
  font-size: var(--story-heading);
}
.story-panel__copy > p {
  color: var(--text-secondary);
}
.story-panel__visual {
  display: grid;
  justify-items: center;
  gap: var(--space-section);
}
.story-panel__visual .device {
  max-width: 280px;
  margin: 0;
}
.story-panel__visual figcaption {
  text-align: center;
}
.tour-disclosure {
  border-block: 1px solid var(--hairline);
}
.tour-disclosure summary,
.practical summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-section);
  min-height: var(--tap-min);
  padding-block: var(--space-section);
  color: var(--link);
  cursor: pointer;
  list-style: none;
}
.tour-disclosure summary::-webkit-details-marker,
.practical summary::-webkit-details-marker {
  display: none;
}
details[open] > summary > span {
  transform: rotate(45deg);
}
.tour-content {
  display: grid;
  justify-items: center;
  gap: var(--space-section);
  padding-bottom: var(--space-page);
}
.tour-content video {
  display: block;
  width: min(100%, 320px);
  height: auto;
  border-radius: var(--radius-card);
}
.tour-content p {
  max-width: 40rem;
  text-align: center;
}
/* Features: the rest of the app on its own screens, then the smaller things
 * that have no screen of their own. Each block is a change of subject, so the
 * section owns a `block` gap between them; a block's title and its content sit
 * `section` apart. Phones use the shared gallery rows in layout.css.
 */
.features {
  display: grid;
  gap: var(--space-block);
  padding-block: var(--space-block);
}
.feature-block {
  display: grid;
  align-content: start;
  gap: var(--space-section);
}
.feature-block > h3 {
  text-align: center;
}
.feature-row {
  display: grid;
  gap: var(--space-block);
}
.feature-list {
  display: grid;
  /* min() keeps one column inside a narrow screen at large text sizes. */
  grid-template-columns: repeat(auto-fill, minmax(min(14rem, 100%), 1fr));
  gap: var(--space-group) var(--space-section);
  list-style: none;
}
.feature-list li {
  display: grid;
  align-content: start;
  gap: var(--space-tight);
  padding-top: var(--space-label);
  border-top: 1px solid var(--hairline);
}
.feature-list strong {
  font-weight: var(--fw-medium);
}
.feature-list span {
  color: var(--text-secondary);
  font-size: var(--fs-sub);
}
@media (min-width: 62rem) {
  .feature-row {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
  .feature-row .feature-block > h3 {
    text-align: start;
  }
  .feature-row .gallery {
    justify-content: flex-start;
  }
}
.practical {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-block);
  padding-block: var(--space-block);
}
.practical h2 {
  max-width: 15ch;
}
.practical__questions {
  display: grid;
  gap: var(--space-related);
}
.practical details {
  border-bottom: 1px solid var(--hairline);
}
.practical summary {
  padding-top: var(--space-related);
}
.answer {
  display: grid;
  gap: var(--space-group);
  padding-bottom: var(--space-section);
  font-size: var(--fs-sub);
  color: var(--text-secondary);
}
.closing {
  display: grid;
  justify-items: center;
  gap: var(--space-section);
  text-align: center;
  padding-block: var(--space-block);
}
.closing > p {
  color: var(--text-secondary);
}
.landing-story .site-footer {
  margin-top: var(--space-block);
}
:lang(th) .intro h1,
:lang(th) .story-panel h3 {
  line-height: var(--lh-thai-heading);
}
:lang(th) .intro h1 {
  font-size: clamp(2rem, 4.5vw, 3.75rem);
}
@media (min-width: 62rem) {
  .intro h1 {
    font-size: clamp(2.75rem, 4.5vw, 3.75rem);
  }
  .transaction-preview__row {
    grid-template-columns: auto 1fr auto;
  }
  .transaction-preview__money {
    grid-column: auto;
    font-size: var(--fs-body);
  }
}
/* Once the demonstration is wide enough, the slip and the transaction it
 * becomes sit side by side: input, arrow, output, read left to right. */
@media (min-width: 70rem) {
  .slip-story__flow {
    grid-template-columns: minmax(0, 1.3fr) auto minmax(0, 1fr);
    gap: var(--space-label);
    padding: var(--space-page) var(--space-section);
  }
  .slip-story__input,
  .slip-story__output {
    width: auto;
    justify-self: stretch;
  }
  .flow-arrow {
    transform: none;
  }
  .transaction-preview__row {
    grid-template-columns: auto 1fr;
  }
  .transaction-preview__money {
    grid-column: 2;
  }
}
@media (max-width: 47.99rem) {
  .intro {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-page);
    padding-top: var(--space-section);
  }
  .intro__copy {
    gap: var(--space-group);
    justify-items: center;
    text-align: center;
  }
  .intro__actions {
    justify-content: center;
  }
  .slip-story__flow {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-section);
    padding: var(--space-page) var(--gutter);
  }
  .slip-story__input,
  .slip-story__output {
    gap: var(--space-group);
  }
  .slip-story__input,
  .slip-story__output {
    width: 100%;
  }
  .bank-slip {
    padding: var(--space-section) var(--space-group) var(--space-group);
    transform: none;
  }
  .flow-arrow {
    justify-self: center;
    transform: rotate(90deg);
    line-height: 1;
  }
  .transaction-preview {
    padding: var(--space-group);
  }
  .story-panel {
    grid-template-columns: minmax(0, 1fr);
    padding: var(--space-section) 0;
    gap: var(--space-page);
  }
  .story-panel__copy {
    max-width: none;
    gap: var(--space-group);
  }
  .story-panel__copy h3 {
    font-size: var(--fs-section);
  }
  .story-panel__visual .device {
    max-width: 260px;
  }
  .story-tabs {
    gap: var(--space-related);
  }
  .story-tabs a {
    flex: 1;
    padding-inline: var(--space-label);
    font-size: var(--fs-caption);
  }
  .practical {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-section);
  }
  .practical h2 {
    max-width: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .story-tabs a {
    transition: none;
  }
}