/* Shared painted edge. Only the image alpha is feathered; its sharp central
   composition is unchanged. A broad, uneven wash uses noise-displaced contours
   and a 16-unit alpha feather. Edge ramps reach full transparency at the canvas
   perimeter, revealing the real page colour in every theme and offline print. */
:root {
  --artwork-edge-mask: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201000%20667%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cfilter%20id%3D%22wash%22%20x%3D%22-15%25%22%20y%3D%22-15%25%22%20width%3D%22130%25%22%20height%3D%22130%25%22%20color-interpolation-filters%3D%22sRGB%22%3E%3CfeTurbulence%20type%3D%22fractalNoise%22%20baseFrequency%3D%22.018%20.028%22%20numOctaves%3D%222%22%20seed%3D%229%22%20result%3D%22grain%22%2F%3E%3CfeDisplacementMap%20in%3D%22SourceGraphic%22%20in2%3D%22grain%22%20scale%3D%2216%22%20xChannelSelector%3D%22R%22%20yChannelSelector%3D%22G%22%20result%3D%22paint%22%2F%3E%3CfeGaussianBlur%20in%3D%22paint%22%20stdDeviation%3D%2216%22%2F%3E%3C%2Ffilter%3E%3ClinearGradient%20id%3D%22x%22%3E%3Cstop%20offset%3D%220%22%20stop-color%3D%22white%22%20stop-opacity%3D%220%22%2F%3E%3Cstop%20offset%3D%22.025%22%20stop-color%3D%22white%22%2F%3E%3Cstop%20offset%3D%22.975%22%20stop-color%3D%22white%22%2F%3E%3Cstop%20offset%3D%221%22%20stop-color%3D%22white%22%20stop-opacity%3D%220%22%2F%3E%3C%2FlinearGradient%3E%3ClinearGradient%20id%3D%22y%22%20x1%3D%220%22%20y1%3D%220%22%20x2%3D%220%22%20y2%3D%221%22%3E%3Cstop%20offset%3D%220%22%20stop-color%3D%22white%22%20stop-opacity%3D%220%22%2F%3E%3Cstop%20offset%3D%22.035%22%20stop-color%3D%22white%22%2F%3E%3Cstop%20offset%3D%22.965%22%20stop-color%3D%22white%22%2F%3E%3Cstop%20offset%3D%221%22%20stop-color%3D%22white%22%20stop-opacity%3D%220%22%2F%3E%3C%2FlinearGradient%3E%3Cmask%20id%3D%22hx%22%20maskUnits%3D%22userSpaceOnUse%22%20x%3D%220%22%20y%3D%220%22%20width%3D%221000%22%20height%3D%22667%22%20style%3D%22mask-type%3Aalpha%22%3E%3Crect%20width%3D%221000%22%20height%3D%22667%22%20fill%3D%22url(%23x)%22%2F%3E%3C%2Fmask%3E%3Cmask%20id%3D%22vy%22%20maskUnits%3D%22userSpaceOnUse%22%20x%3D%220%22%20y%3D%220%22%20width%3D%221000%22%20height%3D%22667%22%20style%3D%22mask-type%3Aalpha%22%3E%3Crect%20width%3D%221000%22%20height%3D%22667%22%20fill%3D%22url(%23y)%22%2F%3E%3C%2Fmask%3E%3C%2Fdefs%3E%3Cg%20mask%3D%22url(%23hx)%22%3E%3Cg%20mask%3D%22url(%23vy)%22%3E%3Cpath%20fill%3D%22white%22%20filter%3D%22url(%23wash)%22%20d%3D%22M98%2043%20C144%2060%20181%2014%20238%2034%20S324%2053%20379%2024%20S481%2048%20536%2022%20S624%2048%20684%2029%20S773%2012%20822%2041%20S907%2014%20949%2067%20C974%2096%20948%20125%20970%20168%20S945%20249%20974%20293%20S946%20378%20970%20426%20S947%20500%20963%20551%20C981%20590%20944%20618%20905%20623%20C864%20606%20824%20652%20772%20630%20S677%20650%20623%20627%20S534%20652%20481%20632%20S389%20653%20336%20630%20S238%20649%20183%20625%20S103%20649%2064%20607%20C37%20579%2055%20548%2032%20505%20S51%20421%2029%20375%20S53%20283%2030%20236%20S51%20154%2032%20110%20C23%2075%2058%2029%2098%2043%20Z%22%2F%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E");
}

.section-image-expand > img,
.image-lightbox-content img,
.print-illustration img,
.scene-figure img,
.sutta-cover img {
  -webkit-mask-image: var(--artwork-edge-mask);
  mask-image: var(--artwork-edge-mask);
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  mask-mode: alpha;
  border: 0;
  border-radius: 0;
  background: transparent;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

/* Transparent surroundings reveal the actual paper/theme behind the edge. */
.section-image-expand,
.sutta-cover {
  background: transparent;
}

.sutta-cover::after {
  display: none;
}

/* Keep the raster paint inside the mask's transparent canvas when Chromium
   composites print output; an unpadded edge can leave a coloured PDF hairline. */
@media print {
  .section-image-expand > img,
  .image-lightbox-content img,
  .print-illustration img,
  .scene-figure img,
  .sutta-cover img {
    padding: 2px;
  }
}