.engine-wrap { position: relative; min-width: 0; width: 100%; aspect-ratio: 1.23; border-radius: 28px; }
.engine-viewport { position: absolute; inset: 0; overflow: hidden; border-radius: inherit; opacity: 0; background: #edf5ff; border: 1px solid #d9e8fa; box-shadow: 0 24px 65px #4885c51a; }
.engine-viewport canvas { display: block; width: 100%; height: 100%; touch-action: pan-y !important; }
.engine-wrap.is-interacting canvas { cursor: grab; }
.engine-wrap.is-interacting canvas:active { cursor: grabbing; }
.engine-wrap.is-ready .engine-viewport { opacity: 1; }
.engine-fallback { position: absolute; top: 50%; width: 100%; transform: translateY(-50%); }
.engine-wrap.is-ready .engine-fallback { display: none; }
.engine-loading { display: none; }
.engine-enhanced .engine-wrap:not(.is-fallback) .engine-fallback { display: none; }
.engine-enhanced .engine-wrap:not(.is-ready):not(.is-fallback) .engine-loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 28px; border: 1px solid #d9e8fa; border-radius: inherit; background: radial-gradient(ellipse at center, #d3e7fc, #f1f7ff 75%); }
.engine-loading-orb { position: relative; display: grid; place-items: center; width: 126px; height: 126px; color: #276ccd; font-size: 26px; font-weight: 700; letter-spacing: .1em; }
.engine-loading-orb i { position: absolute; inset: 0; border: 2px solid #88bfee40; border-top-color: #2388ec; border-right-color: #31c2d5; border-radius: 50%; animation: engine-loading-spin 2s linear infinite; }
.engine-loading-orb i:nth-child(2) { inset: 13px; border-top-color: #40c8dc; animation-direction: reverse; animation-duration: 3s; }
.engine-loading-caption { color: #6081a5; font-size: 12px; letter-spacing: .12em; }
.engine-enhanced .engine-wrap:not(.is-fallback) .engine-status { bottom: 24px; }
@keyframes engine-loading-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .engine-loading-orb i { animation: none; } }
.engine-wrap button { min-height: 36px; padding: 6px 10px; border: 1px solid #9bb9d94d; border-radius: 10px; background: #ffffffb3; color: #46729f; font: inherit; font-size: 11px; cursor: pointer; }
.engine-wrap button:hover, .engine-wrap button[aria-pressed="true"] { background: #dcecff; color: #1865b8; }
.engine-wrap button:focus-visible { outline: 2px solid #46d9ff; outline-offset: 3px; }
.engine-status { position: absolute; bottom: 0; left: 16px; right: 16px; display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 9px; color: #53657e; font-size: 11px; }
.engine-status progress { width: 85px; height: 5px; accent-color: #258ae9; }
.engine-wrap [hidden] { display: none !important; }
@media (max-width: 860px) { .engine-wrap { max-width: 650px; margin-inline: auto; aspect-ratio: 1.3; } }
@media (max-width: 600px) { .engine-wrap { aspect-ratio: 1.05; border-radius: 20px; } .engine-wrap button { min-height: 40px; padding: 6px 8px; } }
/* Data Gravity: a light, borderless stage with HTML controls above the canvas. */
.engine-wrap { aspect-ratio: 1.06; border-radius: 28px; background: radial-gradient(ellipse at 50% 40%, #dcefff8c, #f4faff40 52%, transparent 74%); }
.engine-viewport { inset: 34px 0 128px; background: transparent; border: 0; box-shadow: none; overflow: visible; }
.engine-viewport canvas { border-radius: 24px; }
.engine-source { position: absolute; z-index: 1; transform: translate(-50%, -100%); white-space: nowrap; padding: 6px 10px; border-radius: 7px; border: 1px solid #cae2f080; background: #ffffffd9; color: #345f7c; font-size: 11px; box-shadow: 0 4px 12px #27558b08; pointer-events: none; transition: background .2s, color .2s; }
.engine-source.is-hovered { background: #e0f3ff; color: #056cae; }
.engine-wrap:not(.is-ready) .engine-source { display: none; }
.engine-experience { position: absolute; bottom: 0; left: 0; right: 0; text-align: center; }
.engine-steps { display: flex; align-items: center; justify-content: center; gap: 16px; font-size: 11px; color: #627b90; letter-spacing: .04em; }
.engine-steps b { font-weight: 400; color: #a5c2d6; }
.engine-steps .is-active { color: #0877c7; font-weight: 700; }
.engine-steps .is-complete { color: #366580; }
.engine-wrap button { min-height: 44px; padding: 8px 16px; font-size: 12px; border-radius: 24px; }
@media (max-width: 860px) { .engine-wrap { max-width: 600px; aspect-ratio: 1.12; } }
@media (max-width: 600px) { .engine-wrap { aspect-ratio: .85; } .engine-viewport { inset: 42px -8px 134px; } .engine-source { font-size: 10px; padding: 5px 7px; } .engine-steps { gap: 12px; } }
@media (prefers-reduced-motion: reduce) { .engine-source { transition: none; } }
/* Automatic scene with only the three-step indicator. */
.engine-wrap { aspect-ratio: 1.25; }
.engine-viewport { inset: 0 0 38px; }
.engine-experience { bottom: 6px; }
.engine-viewport canvas:focus-visible { outline: 2px solid #168ee7; outline-offset: 3px; }
@media (max-width: 600px) { .engine-wrap { aspect-ratio: 1; } .engine-viewport { inset: 0 -8px 38px; } }