.portfolio-return {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--blue);
  font-family: var(--hand);
  font-size: 1.35rem;
  white-space: nowrap;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
}
.portfolio-return:hover { text-decoration-style: wavy; }
body {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
input, textarea, [contenteditable]:not([contenteditable="false"]) {
  -webkit-user-select: text;
  user-select: text;
  -webkit-touch-callout: default;
}
.copy-notice {
  position: fixed;
  z-index: 100;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  width: max-content;
  max-width: min(440px, calc(100vw - 40px));
  padding: 18px 26px;
  border: 1.5px solid var(--blue);
  border-radius: 4px 9px 5px 7px;
  background: var(--paper);
  box-shadow: 3px 4px 0 #352abd20;
  color: var(--blue);
  font: 500 1.7rem/1.2 var(--hand);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 12px) rotate(-1deg);
  transition: opacity .18s ease, transform .18s ease;
}
.copy-notice.is-visible { opacity: 1; transform: translate(-50%, 0) rotate(-1deg); }
@media (prefers-reduced-motion: reduce) { .copy-notice { transition: none; } }
@media print { .copy-notice { display: none; } }
@media (max-width: 800px) and (min-width: 601px) {
  .site-header { gap: 18px; }
  .desktop-nav { gap: 16px; }
  .portfolio-return { font-size: 1.1rem; }
}
@media (max-width: 600px) {
  .site-header { gap: 10px; }
  .portfolio-return { margin-left: auto; font-size: 1.125rem; }
  .menu-toggle { padding-inline: 12px; }
}