/* Video-based study: let moving light on the material carry the glow.
   Headline remains legible, like the captions inside the reference rings. */
.t20 .talk-heading h2.display{color:#f4f5f7;text-shadow:0 0 12px #dce5ff14}
@media(prefers-reduced-motion:reduce){.t20 .talk-heading h2.display{text-shadow:none}}

/* Light behind the letterforms; transparent glyphs never duplicate the text.
   The white centre carries a faint cool upper and warm lower bloom. */
.t20 .talk-text-glow{z-index:4;pointer-events:none;opacity:0;mix-blend-mode:screen}
.t20 .talk-text-glow h2.display{color:transparent;text-shadow:0 0 .14em rgba(243,247,255,.48),0 -.05em .36em rgba(153,185,255,.34),0 .09em .48em rgba(255,192,136,.25),0 0 .95em rgba(218,229,255,.18)}
@media(prefers-reduced-motion:reduce),(max-height:620px){.t20 .talk-text-glow{display:none}}