:root{--ink:#17203c;--muted:#68708a;--paper:#f7f5ef;--card:#fff;--purple:#7257d8;--teal:#16a7a0;--yellow:#ffc84a;--coral:#ff765e;--line:#e8e4dc;--shadow:0 12px 35px rgba(28,32,68,.09)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-rounded,"Avenir Next",system-ui,sans-serif}body:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:radial-gradient(#d8d1c6 1px,transparent 1px);background-size:24px 24px;opacity:.3}header{height:76px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));position:relative;z-index:2}.brand{display:flex;align-items:center;gap:11px}.brand-bot{width:42px;height:42px;display:grid;place-items:center;background:var(--purple);color:#fff;border:4px solid #dcd4ff;border-radius:12px;font-weight:900;transform:rotate(-4deg)}.brand strong{display:block;font-size:20px;line-height:18px}.brand small,.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:900;color:var(--purple)}.progress-wrap{display:flex;align-items:center;gap:12px;font-size:12px;font-weight:800}.progress{width:180px;height:8px;border-radius:10px;background:#ece9f2;overflow:hidden}.progress i{display:block;height:100%;width:16.6%;background:linear-gradient(90deg,var(--purple),#9b86ed);transition:.3s}.stars{background:#fff7d7;border:1px solid #eadc9b;padding:8px 13px;border-radius:20px}.stars span{color:#f0b300;margin-right:6px}main{max-width:1180px;margin:28px auto 60px;padding:0 20px;position:relative}.card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px}.mission{padding:20px 24px;display:flex;justify-content:space-between;align-items:center;position:relative;margin-bottom:18px}.mission h1{margin:4px 0 3px;font-size:28px}.mission p{margin:0;color:var(--muted)}button{border:0;font:inherit;font-weight:800;cursor:pointer}.stage-picker,#hintBtn{background:#f0edff;color:var(--purple);padding:10px 14px;border-radius:11px}.stage-menu{position:absolute;right:24px;top:66px;width:270px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);z-index:10}.stage-menu button{width:100%;text-align:left;background:transparent;padding:11px;border-radius:8px;color:var(--ink)}.stage-menu button:hover,.stage-menu button.active{background:#f0edff}.hidden{display:none!important}.game-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:18px}.world,.code{padding:20px}.world-top,.code-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.world-top b{font-size:11px;letter-spacing:1.4px}.pulse{display:inline-block;width:8px;height:8px;border-radius:50%;background:#26bc75;margin-right:8px;box-shadow:0 0 0 4px #d8f5e5}.legend{display:flex;gap:16px;font-size:11px;color:var(--muted)}.map{aspect-ratio:1.12;display:grid;gap:5px;background:#dcd7cc;padding:7px;border-radius:15px;border:3px solid #eeeae1}.tile{position:relative;background:#f5f2e9;border-radius:6px;display:grid;place-items:center;box-shadow:inset 0 0 0 1px rgba(90,74,55,.06)}.tile.wall{background:#8d88a0;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}.tile.goal{background:#d9faeb}.tile.goal:after{content:"◆";font-size:30px;color:#22b77a;filter:drop-shadow(0 2px 0 #fff)}.tile.object:after{content:"🔋";font-size:26px}.tile.switch:after{content:"●";font-size:27px;color:#ff9c38}.robot{position:absolute;z-index:3;width:68%;height:68%;display:grid;place-items:center;background:#7b61dc;border:3px solid #fff;border-radius:14px;color:white;font-size:24px;box-shadow:0 5px 8px rgba(54,35,120,.25);transition:transform .25s,left .25s,top .25s}.robot:after{content:"▲";font-size:10px;position:absolute;top:-9px;color:#4b369c}.tip{text-align:center;margin-top:14px;color:var(--muted);font-size:12px}.code h2{font-size:19px;margin:3px 0}.clear{background:none;color:#e35b57;font-size:12px}.toolbox{display:flex;flex-wrap:wrap;gap:8px;padding:10px 0 14px;border-bottom:1px solid var(--line)}.command{padding:9px 10px;border-radius:10px;color:#fff;font-size:12px;box-shadow:0 3px 0 rgba(0,0,0,.12)}.forward{background:var(--teal)}.left,.right{background:var(--purple)}.loop{background:#e9a91b}.ifpath{background:var(--coral)}.interact{background:#3487d2}.workspace{min-height:245px;max-height:300px;overflow:auto;background:#faf9f6;border:2px dashed #ddd7cb;border-radius:14px;margin:14px 0;padding:12px}.empty{height:215px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#9b96a5}.empty span{font-size:34px;color:#c3bdca}.empty small{margin-top:4px}.block{display:flex;align-items:center;gap:8px;color:#fff;padding:10px 12px;border-radius:9px;margin-bottom:7px;font-size:13px;animation:pop .18s ease}.block b{flex:1}.block button{background:#ffffff33;color:#fff;width:24px;height:24px;border-radius:7px}.block select{border:0;border-radius:5px;padding:2px;font-weight:800}.block.active{outline:4px solid #ffe27b;transform:translateX(3px)}@keyframes pop{from{transform:scale(.94);opacity:.5}}.controls{display:grid;grid-template-columns:.7fr 1.4fr .7fr;gap:8px}.controls button{padding:12px 6px;border-radius:11px}.run{background:var(--ink);color:#fff}.secondary{background:#efedf3;color:#57516b}.feedback{font-size:12px;margin-top:12px;color:var(--muted);text-align:center;min-height:18px}.feedback.error{color:#d64c45}.feedback.success{color:#169767}.lesson{display:flex;align-items:center;gap:14px;padding:16px 20px;margin-top:18px}.lesson .teacher{font-size:28px;width:50px;height:50px;background:#fff2b9;border-radius:15px;display:grid;place-items:center}.lesson div:nth-child(2){flex:1}.lesson p{margin:3px 0;color:var(--muted);font-size:13px}.modal{position:fixed;inset:0;background:#17203caa;display:grid;place-items:center;z-index:20}.modal-card{background:#fff;text-align:center;width:min(420px,90vw);padding:35px;border-radius:24px;box-shadow:0 25px 80px #10162f66}.big-star{font-size:64px;color:#f7bb19;filter:drop-shadow(0 5px 0 #e39a13)}.modal h2{font-size:30px;margin:8px}.earned{font-size:32px;color:#f6b71a;letter-spacing:8px;margin:18px}.modal button{background:var(--purple);color:#fff;padding:13px 24px;border-radius:12px}@media(max-width:820px){header{padding:0 16px}.progress{width:85px}.game-layout{grid-template-columns:1fr}.map{max-height:520px}.mission{align-items:flex-start}.progress-wrap span{display:none}}@media(max-width:520px){.brand small,.legend{display:none}.world,.code{padding:14px}.controls{grid-template-columns:1fr 1.6fr}.controls #resetBtn{display:none}}