/* 复用参考页的字体、浅灰背景和蓝灰文字，保持简洁的功能入口。 */
body { font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; margin: 0; background: #f4f4f9; color: #333; line-height: 1.6; }
main { max-width: 44rem; margin: 12vh auto; padding: 2rem; text-align: center; }
h1 { color: #3a3d55; font-size: 1.8rem; }
#message { overflow-wrap: anywhere; }
.reverse-content { display: inline-flex; flex-direction: row-reverse; flex-wrap: nowrap; }
.noise { display: none; }
.glyph { white-space: pre; }
.tone-0 { color: #3a3d55; }
.tone-1 { color: #333; }
.tone-2 { color: #555; }
@media (prefers-reduced-motion: no-preference) { [aria-busy="true"] h1 { animation: breathe 2s ease-in-out infinite; } }
@keyframes breathe { 50% { opacity: .65; } }
@media (max-width: 480px) { main { padding: 1.25rem; margin-top: 8vh; } }