.evidence-demo-section { padding: 88px 0; scroll-margin-top: 112px; background: var(--landing-page-section-bg); color: var(--text-dark); border-block: 1px solid var(--border-color); }
.evidence-section-heading { max-width: 800px; margin-bottom: 36px; }
.evidence-kicker { font: 700 .76rem var(--font-sans); color: var(--accent-color); letter-spacing: .09em; text-transform: uppercase; margin-bottom: 16px; }
.evidence-section-heading h2 { font: 700 clamp(2rem, 4vw, 3.5rem)/1.12 var(--font-display); letter-spacing: -.045em; margin-bottom: 22px; }
.evidence-section-heading p:not(.evidence-kicker), .evidence-product-paths p:not(.evidence-kicker) { color: var(--text-light); line-height: 1.8; }
.evidence-demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: stretch; }
.evidence-chapters { display: grid; gap: 8px; min-width: 0; }
.evidence-chapters a { display: flex; gap: 18px; align-items: center; padding: 19px; border: 1px solid var(--border-color); border-radius: 10px; color: var(--text-dark); background: var(--card-tint); text-decoration: none; }
.evidence-chapters a:hover { border-color: var(--primary-color); }
.evidence-chapter-number { font: 600 .8rem var(--font-display); color: var(--accent-color); }
.evidence-chapters a > span:nth-child(2) { flex: 1; }
.evidence-chapters strong { display: block; font: 600 1rem var(--font-display); margin-bottom: 6px; }
.evidence-chapters small { color: var(--text-light); line-height: 1.5; }
.evidence-receipt { margin: 0; padding: 28px; border: 1px solid var(--border-color); border-radius: 14px; background: var(--bg-light); min-width: 0; }
.evidence-receipt figcaption { display: flex; gap: 10px; align-items: center; font-size: .77rem; color: var(--text-light); padding-bottom: 24px; }
.evidence-live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success-color); flex: 0 0 auto; }
.evidence-receipt-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: .87rem; border-top: 1px solid var(--border-color); padding: 16px 0; }
.evidence-receipt-row span { color: var(--text-light); }
.evidence-pass { color: var(--success-color); }
.evidence-fail { color: var(--error-color); }
.evidence-receipt pre { margin: 10px 0 18px; padding: 18px; border: 1px solid var(--border-color); border-radius: 8px; font: .82rem/1.7 monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
.evidence-receipt p { font-size: .85rem; line-height: 1.75; color: var(--text-light); margin-bottom: 18px; }
.evidence-receipt a, .evidence-product-paths a, .evidence-text-link { color: var(--accent-color); text-underline-offset: 4px; font-size: .9rem; }
.evidence-demo-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 28px; }
.evidence-demo-actions button { font: 600 1rem var(--font-sans); cursor: pointer; }
.evidence-demo-actions span { font-size: .78rem; color: var(--text-light); }
.evidence-scope { margin: 20px 0 0; color: var(--text-light); font-size: .8rem; line-height: 1.7; max-width: 880px; }
.evidence-frame-host { margin-top: 26px; border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; }
.evidence-frame-host[hidden] { display: none; }
.evidence-frame-host iframe { display: block; width: 100%; height: 850px; border: 0; background: var(--landing-page-section-bg); }
.evidence-product-paths { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; border-top: 1px solid var(--border-color); margin-top: 48px; padding-top: 36px; }
.evidence-product-paths h3 { font: 600 1.6rem/1.3 var(--font-display); margin-bottom: 16px; letter-spacing: -.025em; }
.evidence-product-paths a { display: inline-block; margin: 20px 18px 0 0; }
html[data-theme="light"] .evidence-demo-section { --accent-color: var(--primary-dark); }
html[data-theme="light"] .evidence-pass { color: var(--success-text-dark); }
@media (max-width: 800px) { .evidence-demo-section { padding: 54px 0; } .evidence-demo-grid, .evidence-product-paths { grid-template-columns: 1fr; } .evidence-demo-actions { gap: 18px; } .evidence-frame-host iframe { height: 740px; } }
@media (max-width: 480px) { .evidence-receipt { padding: 20px; } .evidence-chapters a { padding: 16px; gap: 12px; } .evidence-demo-actions button { width: 100%; } }
/* Keep the existing platform illustration and footer usable on small screens. */
@media (max-width: 720px) { .qpw-sidebar { display: none; } .qpw-footer, .footer-social { flex-wrap: wrap; gap: 12px; } .qpw-pill-group { flex-wrap: wrap; } }