*{box-sizing:border-box}body{margin:0;background:linear-gradient(#faf0d9,#f6e1bf);font:15px/1.75 'Hind Siliguri',sans-serif;color:#2b3930}header{padding:13px max(20px,calc((100vw - 1200px)/2));background:#fff9ec;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #deccaa}header a{text-decoration:none;color:#9b3828;font-weight:800}header nav{display:flex;gap:22px}main{width:min(1200px,calc(100% - 30px));margin:auto}.hero{text-align:center;padding:44px 12px 24px}.hero h1{font:800 clamp(26px,4vw,47px)/1.5 'Noto Serif Bengali',serif;margin:9px 0;color:#843225}.hero p{max-width:700px;margin:auto}.over{font-size:12px;color:#a64b34;font-weight:800}.demo-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:13px 0 24px}.pick{border:2px solid #d4b48e;background:#fff9ea;border-radius:15px;padding:19px;text-align:left;cursor:pointer;font:700 16px/1.55 'Hind Siliguri',sans-serif;color:#314b3c}.pick.active{border-color:#a4382b;background:#f9d2ab;box-shadow:0 7px 26px #7e51362b}.pick small{display:block;font-weight:500}.demo-stage{display:grid;grid-template-columns:1.05fr 1fr;border-radius:19px;overflow:hidden;box-shadow:0 15px 40px #6b4a2f26;margin:14px 0 25px}.scene{position:relative;background:#6f452c}.scene img{width:100%;height:100%;object-fit:cover;min-height:490px}.speaker{position:absolute;bottom:20px;left:20px;right:20px;background:#1c3d33e8;color:white;border:1px solid #d5b176;border-radius:9px;padding:11px 17px;font-weight:700}.paper{background:#fff9ed;padding:29px}.paper h2{font:800 27px/1.5 'Noto Serif Bengali',serif;margin:7px 0;color:#943a2e}.paper>p{margin:0 0 13px}.step-tabs{display:flex;gap:5px;flex-wrap:wrap;margin:15px 0}.step-tabs button{background:#f1e3c8;border:1px solid #dfc7a1;border-radius:20px;padding:6px 11px;cursor:pointer}.step-tabs button.active{color:white;background:#245745}.play-panel{padding:19px;background:#f4dfb8;border-left:5px solid #a73c28;border-radius:7px;min-height:110px}.play-panel p{margin:8px 0 0}.buttons{display:flex;gap:8px;margin-top:17px;flex-wrap:wrap}.buttons button,.primary{background:#a5382a;color:white;border:0;text-decoration:none;padding:11px 17px;border-radius:9px;cursor:pointer;font-weight:700}.buttons #reset{background:#345c4b}.hint{font-size:12px;color:#726855;margin-top:12px!important}.bottom{text-align:center;margin:40px 0}.bottom .primary{display:inline-block}footer{border-top:1px solid #d6bda0;text-align:center;padding:20px;font-size:12px;background:#fff9eb}@media(max-width:850px){.demo-stage{grid-template-columns:1fr}.scene img{min-height:270px;max-height:410px}.demo-picker{grid-template-columns:1fr}.pick{padding:12px 17px}}@media(max-width:420px){.paper{padding:19px}.scene img{min-height:220px}header nav{gap:9px;font-size:12px}.play-panel{padding:12px}}