/* Shared by the landing overview and the illustrative product tour. */
.product-preview { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; text-align: left; }
.preview-card { padding: 30px 26px; border: 1px solid var(--gl-color-line-hairline); border-radius: var(--gl-radius-xl); background: var(--gl-color-surface-card); display: flex; flex-direction: column; gap: 20px; }
.preview-label { font: var(--gl-font-label-sm); letter-spacing: .06em; text-transform: uppercase; color: var(--gl-color-accent-primary-text); }
.preview-card h3 { font: 400 28px/1.25 var(--gl-font-family-display); letter-spacing: -.02em; }
.preview-card p, .differs-item p { color: var(--gl-color-ink-secondary); line-height: 1.65; }
.preview-card--question { background: var(--gl-color-ink-primary); color: var(--gl-color-ink-inverse); }
.preview-card--question .preview-label, .preview-card--question p, .preview-card--question .preview-footnote { color: var(--gl-color-ink-inverse); }
.preview-footnote { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--gl-color-line-hairline); font-size: 13px; color: var(--gl-color-ink-secondary); }
.preview-caption { margin: 24px auto 12px; color: var(--gl-color-ink-secondary); font-size: 13px; }
.tour-link { display: inline-flex; align-items: center; gap: 14px; padding: 10px 0; font-weight: 600; }
.differs-item { display: block; }
.differs-item h3 { font: var(--gl-font-heading-sm); margin-bottom: 10px; }
.faq-more { margin-top: 24px; text-align: center; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--gl-color-accent-primary-text); outline-offset: 4px; }

/* All panels remain readable without JS; the script adds tab navigation. */
.tour-page { max-width: 1020px; margin: auto; padding: 50px 24px 70px; }
.tour-intro { max-width: 680px; margin: 0 auto 32px; text-align: center; }
.tour-intro h1 { font: 400 clamp(32px, 5vw, 48px)/1.12 var(--gl-font-family-display); margin: 16px 0; letter-spacing: -.025em; }
.tour-intro p { color: var(--gl-color-ink-secondary); line-height: 1.6; }
.tour-nav { display: none; }
.tour-nav[data-ready] { display: flex; gap: 8px; padding: 6px; margin: 0 auto 24px; border: 1px solid var(--gl-color-line-hairline); border-radius: 18px; max-width: 650px; }
.tour-nav button { flex: 1; border: 0; border-radius: 12px; min-height: 46px; padding: 10px; cursor: pointer; font: inherit; color: var(--gl-color-ink-secondary); background: transparent; }
.tour-nav button[aria-selected="true"] { color: var(--gl-color-ink-inverse); background: var(--gl-color-accent-primary-text); }
.tour-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; margin: 24px 0; padding: 40px; background: var(--gl-color-surface-sunken); border: 1px solid var(--gl-color-line-hairline); border-radius: 28px; }
.tour-panel[hidden] { display: none; }
.tour-story h2 { font: 400 32px/1.2 var(--gl-font-family-display); letter-spacing: -.02em; margin: 12px 0 18px; }
.tour-story p { margin: 0 0 16px; color: var(--gl-color-ink-secondary); line-height: 1.65; }
.tour-note { border-left: 2px solid var(--gl-color-accent-primary-text); padding-left: 16px; font-size: 14px; }
.tour-example { background: var(--gl-color-surface-card); border: 1px solid var(--gl-color-line-hairline); border-radius: 22px; padding: 26px; box-shadow: var(--gl-shadow-md); }
.tour-example h3 { font: 400 26px/1.25 var(--gl-font-family-display); margin: 16px 0 20px; }
.tour-example p { color: var(--gl-color-ink-secondary); line-height: 1.55; }
.sample-answer, .sample-idea { border-top: 1px solid var(--gl-color-line-hairline); padding-top: 15px; margin-top: 15px; }
.sample-answer strong, .sample-idea strong { display: block; font-weight: 600; margin-bottom: 5px; }
.sample-status { display: inline-block; padding: 6px 12px; margin: 8px 0; border-radius: var(--gl-radius-pill); color: var(--gl-color-accent-primary-text); background: var(--gl-color-accent-primary-soft); font-size: 13px; }
.tour-outro { text-align: center; margin-top: 30px; }
.tour-outro p { color: var(--gl-color-ink-secondary); margin-bottom: 12px; }
.tour-outro a { display: inline-flex; min-height: 44px; align-items: center; margin: 0 12px; font-weight: 600; }
@media (max-width: 760px) {
  .product-preview { grid-template-columns: 1fr; max-width: 520px; margin: auto; }
  .preview-card { gap: 16px; }
  .tour-panel { grid-template-columns: 1fr; padding: 24px; gap: 24px; }
  .tour-page { padding: 32px 18px 48px; }
}
@media (max-width: 480px) {
  .header-links { gap: 10px; font-size: 13px; }
  .header-links .header-cta { padding: 8px 11px; }
  .site-header .container { padding-inline: 16px; gap: 10px; }
  .brand img { width: 112px; }
  .tour-nav[data-ready] { gap: 2px; }
  .tour-nav button { font-size: 13px; padding: 8px 4px; }
  .tour-panel { padding: 20px; }
  .tour-example { padding: 20px; }
}
@media (max-width: 360px) {
  .brand img { width: 96px; }
  .header-links { gap: 8px; }
  .header-links .header-cta { white-space: nowrap; }
}