:root{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--tg-theme-text-color,#f4f4f4);background:var(--tg-theme-bg-color,#111214)}*{box-sizing:border-box}body{margin:0;background:var(--tg-theme-bg-color,#111214);color:var(--tg-theme-text-color,#f4f4f4)}button,input,textarea{font:inherit}.shell{max-width:720px;margin:auto;padding:18px 14px 90px}header{display:flex;justify-content:space-between;align-items:center;margin:8px 2px 18px}h1{font-size:28px;margin:2px 0}h2{font-size:18px;margin:0 0 10px}.eyebrow{font-size:11px;letter-spacing:.18em;color:var(--tg-theme-hint-color,#8c8f94)}.status{color:#56d364}nav{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;background:var(--tg-theme-secondary-bg-color,#1d1f23);padding:5px;border-radius:14px;margin-bottom:14px}nav button{border:0;border-radius:10px;padding:10px;background:transparent;color:inherit}nav button.active{background:var(--tg-theme-button-color,#2f6fed);color:var(--tg-theme-button-text-color,#fff)}.tab{display:none}.tab.active{display:block}.panel{background:var(--tg-theme-secondary-bg-color,#1d1f23);border-radius:18px;padding:16px;margin:10px 0}.muted{color:var(--tg-theme-hint-color,#9ba0a6);font-size:14px;line-height:1.45}.row{display:flex;gap:8px;align-items:center}.wrap{flex-wrap:wrap}.between{justify-content:space-between}.wide{width:100%}.primary,.secondary,.ghost,.ratings button{border:0;border-radius:12px;padding:12px 14px;cursor:pointer}.primary{background:var(--tg-theme-button-color,#2f6fed);color:var(--tg-theme-button-text-color,#fff)}.secondary{background:#2b3443;color:#fff}.ghost{background:rgba(127,127,127,.15);color:inherit}button:disabled{opacity:.55}input,textarea{width:100%;background:rgba(127,127,127,.12);border:1px solid rgba(127,127,127,.18);color:inherit;border-radius:12px;padding:12px;margin:7px 0 12px;outline:none}textarea{resize:vertical}.form label{display:block;font-size:13px;color:var(--tg-theme-hint-color,#a5a8ad)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.stat{background:var(--tg-theme-secondary-bg-color,#1d1f23);border-radius:15px;padding:12px}.stat b{display:block;font-size:22px}.stat span{font-size:11px;color:var(--tg-theme-hint-color,#999)}.overlay{position:fixed;inset:0;background:var(--tg-theme-bg-color,#111214);z-index:20;overflow:auto}.hidden{display:none!important}.study{max-width:720px;margin:auto;padding:18px 14px 40px}.video{width:100%;aspect-ratio:16/9;border:0;border-radius:16px;margin:16px 0;background:#000}.ratings{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:20px}.ratings button:nth-child(1){background:#5d2630;color:#fff}.ratings button:nth-child(2){background:#644c25;color:#fff}.ratings button:nth-child(3){background:#285a40;color:#fff}.ratings button:nth-child(4){background:#234d62;color:#fff}#english{font-size:26px;margin-top:22px}#translation{font-size:18px}.result-card{padding:12px;border:1px solid rgba(127,127,127,.2);border-radius:12px;margin-top:12px}.chip{display:inline-block;background:rgba(47,111,237,.18);padding:6px 9px;border-radius:9px;font-size:13px}