#particle-settings{position:fixed;inset-inline-end:22px;bottom:64px;z-index:46;color:#d8d2f6;font:12px/1.5 system-ui,sans-serif}
#particle-settings-toggle{display:grid;place-items:center;box-sizing:border-box;width:32px;height:32px;padding:7px;border:1px solid #536681;border-radius:50%;background:#0d1b32;color:#c0baff;cursor:pointer;position:relative}
#particle-settings-toggle svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round}
#particle-settings-toggle:hover,#particle-settings-toggle[aria-expanded=true]{border-color:#d5baff;color:#e6c9ff;background:#1b2944}
#particle-settings-panel{position:absolute;inset-inline-end:0;bottom:46px;box-sizing:border-box;width:320px;max-width:calc(100vw - 32px);max-height:min(490px,calc(100svh - 160px));overflow:auto;padding:12px;border:1px solid #495a79;border-radius:11px;background:#0d1b30;box-shadow:0 12px 45px #0006;text-align:start}
#particle-settings-panel[hidden]{display:none}
.particle-settings-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
.particle-settings-heading h2{margin:0;font:500 11px/1.5 system-ui,sans-serif;color:#d4c5ff}
#particle-settings .particle-settings-close{border:0;background:none;color:#bdb2dc;font:20px/1 system-ui;padding:4px 7px;cursor:pointer}
#particle-settings .particle-auto{width:100%;margin-bottom:8px;text-align:start}
.particle-effect-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
#particle-settings .particle-effect-list button,#particle-settings .particle-auto{font:inherit;line-height:1.4;padding:9px 10px;border:1px solid #344662;border-radius:6px;background:#132139;color:#b8c4da;cursor:pointer;overflow-wrap:anywhere}
#particle-settings button[aria-pressed=true]{border-color:#af9bed;background:#332d50;color:#f0e7ff}
#particle-settings button:hover{border-color:#a996e1;color:#eee5ff}
#particle-settings button:focus-visible{outline:2px solid #e6c9ff;outline-offset:3px}
@media(max-width:760px){#particle-settings{inset-inline-end:14px;bottom:calc(58px + env(safe-area-inset-bottom,0px))}#particle-settings-panel{position:fixed;inset-inline-end:14px;bottom:calc(104px + env(safe-area-inset-bottom,0px));max-height:calc(100svh - 190px)}}
@media(pointer:coarse){#particle-settings-toggle:after{content:'';position:absolute;inset:-6px}.particle-effect-list button{min-height:44px}}

.particle-effect-list button{display:flex;align-items:center;gap:8px;text-align:start}
.particle-effect-list button svg{width:18px;height:18px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
#particle-settings-toggle{background:#0b172a;border-color:#52617d;box-shadow:0 2px 10px #02081244}

#particle-settings-toggle.is-auto{color:#e6c9ff;border-color:#b6afff;background:#1b2944}

#particle-settings .particle-auto{display:flex;align-items:center;justify-content:space-between;gap:12px;background:transparent;border-color:#344662;padding:7px 0;border-width:0 0 1px;border-radius:0}
.particle-switch-track{position:relative;flex-shrink:0;width:32px;height:18px;border:1px solid #596880;border-radius:20px;background:#26364e;transition:background .18s,border-color .18s}
.particle-switch-track:after{content:'';position:absolute;inset-inline-start:2px;top:2px;width:12px;height:12px;border-radius:50%;background:#a1aec4;transition:inset-inline-start .18s,background .18s}
.particle-auto[aria-checked=true] .particle-switch-track{background:#a79bea;border-color:#b6afff}
.particle-auto[aria-checked=true] .particle-switch-track:after{inset-inline-start:16px;background:#f5efff}
@media(prefers-reduced-motion:reduce){.particle-switch-track,.particle-switch-track:after{transition:none}}

/* Twelve choices in two narrow columns give a taller, denser panel. */
#particle-settings-panel{max-height:calc(100svh - 160px)}
.particle-effect-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px}
#particle-settings .particle-effect-list button{padding:6px 7px;gap:6px;font-size:10px;min-height:34px}
.particle-effect-list button svg{width:15px;height:15px}
@media(pointer:coarse){#particle-settings .particle-effect-list button{min-height:44px}}
.particle-effect-list button[hidden]{display:none!important}
.particle-pages{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:8px;padding-top:7px;border-top:1px solid #344662;font-size:10px;color:#a8b8d2;direction:ltr}
#particle-settings .particle-pages button{width:30px;height:26px;border:1px solid #405575;border-radius:6px;background:#132139;color:#d6ccf6;font-size:20px;line-height:1;cursor:pointer}
#particle-settings .particle-pages button:disabled{opacity:.3;cursor:default}
html[dir="rtl"] .particle-pages{flex-direction:row-reverse}
html[dir="rtl"] .particle-pages button{transform:scaleX(-1)}

@media(pointer:coarse){#particle-settings .particle-pages button{width:44px;height:36px}}

#particle-settings .particle-auto{font-size:11px}
/* Four-character Chinese labels fit a compact two-column panel. */
html[lang="zh-HK"] #particle-settings-panel{width:240px}
html[lang="zh-HK"] .particle-effect-list button span{white-space:nowrap}

/* Desktop reveal belongs only to the particle button's own hit area. */
#particle-settings-toggle{opacity:.5;transition:opacity .8s ease-in-out,transform .8s ease-in-out,color .2s,border-color .2s,background .2s}
#particle-settings-toggle:hover,#particle-settings-toggle:focus-visible,#particle-settings-toggle[aria-expanded=true]{opacity:1}
@media(min-width:761px) and (hover:hover) and (pointer:fine){
  #particle-settings{width:32px;height:32px;pointer-events:none}
  #particle-settings::before{content:'';position:absolute;inset:0;pointer-events:auto}
  #particle-settings-toggle{position:absolute;inset-inline-end:0;top:0;z-index:1;opacity:0;transform:translateY(3px);pointer-events:none}
  #particle-settings-panel{pointer-events:auto;z-index:2}
  #particle-settings:hover #particle-settings-toggle,
  #particle-settings:focus-within #particle-settings-toggle,
  #particle-settings-toggle[aria-expanded=true]{opacity:1;transform:none;pointer-events:auto}
}
@keyframes particle-panel-reveal{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes particle-panel-fade{from{opacity:0}to{opacity:1}}
#particle-settings-panel:not([hidden]){animation:particle-panel-reveal .8s ease-in-out both}
@media(prefers-reduced-motion:reduce){#particle-settings-toggle{transition:opacity .8s ease-in-out,color .2s,border-color .2s,background .2s!important;transform:none}#particle-settings-panel:not([hidden]){animation:particle-panel-fade .8s ease-in-out both!important}}