:root{color-scheme:dark;--bg:#101a1c;--panel:#192528;--line:#304043;--muted:#91a5a7;--text:#e7efed;--orange:#f5b177;--cyan:#66dbd4}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,Arial,sans-serif;font-size:14px}button,input{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}header{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:32px;padding:0 5%}.brand{display:flex;align-items:center;gap:13px;color:var(--text);text-decoration:none;font-weight:800;letter-spacing:2px}.brandmark{background:var(--cyan);color:#13292a;display:grid;place-items:center;width:35px;height:39px;border-radius:15px 15px 15px 4px;font-size:31px;font-family:Georgia;line-height:1}.edition{font-size:9px;letter-spacing:1.8px;font-weight:500;border-left:1px solid var(--line);padding-left:20px;margin-left:6px;color:var(--muted)}.engine{margin-left:auto;font-family:Consolas,monospace;font-size:10px;letter-spacing:1px;color:var(--muted)}.engine i,.water-dot{display:inline-block;background:var(--cyan);width:6px;height:6px;border-radius:50%;margin-right:8px}.quiet{border:1px solid var(--line);background:transparent;color:var(--text);border-radius:7px;padding:10px 14px}main{max-width:1550px;padding:44px 5% 0;margin:auto}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:var(--orange)}h1{font-size:clamp(32px,3.5vw,51px);font-weight:550;letter-spacing:-2px;margin:12px 0 8px}h1 em{font-family:Georgia,serif;font-weight:400;color:var(--cyan)}.intro p{color:var(--muted);font-size:15px;margin:0}.intro-note{display:flex;align-items:center;gap:20px;color:var(--muted);font-size:12px;line-height:1.8}.intro-note>span{font-family:Georgia;font-size:65px;font-style:italic;color:var(--orange);line-height:1}.layout{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:24px}.board-top{display:flex;justify-content:space-between;align-items:center;padding:20px 23px;background:var(--panel);border:1px solid var(--line);border-bottom:0;border-radius:12px 12px 0 0}h2{font-weight:550;letter-spacing:-.5px;font-size:21px;margin:7px 0 0}.badge{font-family:Consolas,monospace;color:var(--cyan);font-size:9px;letter-spacing:1px;border:1px solid #3b6260;background:#24423f66;padding:7px 9px;border-radius:4px}.canvas-wrap{position:relative;background:#122123;border:1px solid var(--line);overflow:hidden}canvas{display:block;width:100%;height:auto;touch-action:none}.board-label{position:absolute;top:21px;left:22px;font:9px Consolas,monospace;letter-spacing:1.5px;color:#bdd0ce;pointer-events:none}.board-label span{color:#627d80;margin-left:9px}.board-hint{position:absolute;bottom:13px;width:100%;text-align:center;color:#78989b;font-size:11px;pointer-events:none}.board-bottom{border:1px solid var(--line);border-top:0;border-radius:0 0 12px 12px;padding:14px 19px;display:flex;justify-content:space-between;font-size:10px;color:var(--muted);background:var(--panel)}.board-bottom>span:nth-child(2){font-family:Consolas}.panel{border:1px solid var(--line);background:var(--panel);padding:22px;border-radius:12px}.section-line{display:flex;align-items:center;justify-content:space-between;gap:8px}h3{font-size:14px;font-weight:600;margin:0}.section-line>span{font-size:9px;letter-spacing:1px;color:var(--muted)}.hint{font-size:12px;line-height:1.75;color:var(--muted);margin:16px 0 24px;min-height:61px}.supply-head{display:flex;justify-content:space-between;font-size:12px}.supply-head 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0;cursor:pointer}.primary{background:var(--orange);color:#29251e;font-weight:650;border:0;border-radius:7px;padding:13px 17px}.primary:hover{background:#ffc894}.valve{width:100%;margin-top:6px}.valve.flowing{background:var(--cyan)}.reset{display:block;margin:14px auto 0;background:none;border:0;color:var(--muted);font-size:11px;padding:5px}.keyboard{text-align:center;font-family:Consolas;font-size:8px;letter-spacing:1.5px;color:#71898c;margin:14px 0 0}.scores{margin-top:18px}.trophy{color:var(--orange);margin-right:8px}.small{padding:4px 6px}.score-caption{color:var(--muted);font-size:10px;margin:9px 0 18px}.score-row{display:grid;grid-template-columns:23px 1fr auto;gap:7px;align-items:center;padding:11px 0;border-top:1px solid var(--line);font-size:11px}.score-row>span:first-child{color:var(--orange);font-family:Consolas}.score-row small{display:block;font-size:9px;color:var(--muted);margin-top:3px}.score-row 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#557475;border-radius:15px;padding:35px}dialog::backdrop{background:#071214cc;backdrop-filter:blur(4px)}dialog h2{font-size:31px;margin-top:20px}dialog p{font-size:13px;line-height:1.8;color:#afc4c3}.close{float:right;font-size:11px;margin:-15px -15px 20px 15px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#f5b177;color:#192528;padding:13px 22px;border-radius:8px;z-index:4;max-width:90vw}@media(min-width:1450px){.layout{grid-template-columns:minmax(0,1fr) 340px}}@media(max-width:1000px){main{padding:30px 3% 0}header{padding:0 3%}.layout{grid-template-columns:minmax(0,1fr) 275px;gap:15px}.panel{padding:17px}.edition{display:none}.intro-note{display:none}.board-bottom>span:last-child{display:none}.badge{font-size:8px}.board-top{padding:15px}.level{padding:10px 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.badge{letter-spacing:0;font-size:7px}.board-label{display:none}.board-bottom{font-size:8px}footer .muted{display:none}}