.pst-app-btn{display:inline-flex;align-items:center;gap:8px;background:var(--pst-app-color,#0b5ed7);color:#fff;border:0;border-radius:10px;padding:12px 22px;font:600 16px/1.2 system-ui,-apple-system,"Segoe UI",sans-serif;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.15);transition:transform .15s,filter .15s}
.pst-app-btn:hover{transform:translateY(-1px);filter:brightness(1.08);color:#fff}
.pst-app-btn[hidden]{display:none!important}
.pst-app-float{position:fixed;right:16px;bottom:16px;z-index:99998;border-radius:999px;padding:12px 18px}
.pst-app-modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;z-index:99999;padding:16px}
.pst-app-modal[hidden]{display:none}
.pst-app-modal__box{background:#fff;color:#222;max-width:420px;width:100%;border-radius:14px;padding:24px;position:relative;font:15px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
.pst-app-modal__box h3{margin:0 0 12px;font-size:20px}
.pst-app-modal__box ol{margin:0 0 0 20px;padding:0}
.pst-app-modal__close{position:absolute;top:8px;right:12px;background:none;border:0;font-size:28px;line-height:1;cursor:pointer;color:#666}
.pst-app-step[hidden]{display:none}
.pst-yt__heading{margin:0 0 16px}
.pst-yt__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.pst-yt__card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.08)}
.pst-yt__thumb{position:relative;display:block;width:100%;padding:0;border:0;background:#000;cursor:pointer;aspect-ratio:16/9;overflow:hidden}
.pst-yt__thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.pst-yt__thumb:hover img{transform:scale(1.04)}
.pst-yt__play{position:absolute;left:50%;top:50%;width:64px;height:44px;margin:-22px 0 0 -32px;background:#ff0000;border-radius:12px}
.pst-yt__play:after{content:"";position:absolute;left:26px;top:13px;border-style:solid;border-width:9px 0 9px 15px;border-color:transparent transparent transparent #fff}
.pst-yt__thumb iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.pst-yt__title{font-size:16px;line-height:1.4;margin:12px 14px 4px}
.pst-yt__date{font-size:13px;color:#777;margin:0 14px 14px}
.pst-yt__more{text-align:center;margin-top:24px}