*{box-sizing:border-box}html{height:100%;touch-action:manipulation}body{margin:0;min-height:100%;font-family:system-ui,Microsoft YaHei,sans-serif;background:#163765 url(assets/background.png) center center/cover fixed;color:#fff;overflow-x:hidden}.game{width:min(100%,460px);margin:auto;padding:12px 18px max(14px,env(safe-area-inset-bottom));user-select:none}.top{display:flex;justify-content:space-between;align-items:center;padding:3px 2px 10px}.logo{font-size:23px;font-weight:1000;color:#ffe175;letter-spacing:1px;text-shadow:0 3px #a55420,1px 1px #a55420}.logo small{display:block;font-size:9px;letter-spacing:2px;color:#b6d5f4;text-shadow:none}.round{width:39px;height:39px;border:2px solid #4e9bd4;border-radius:10px;background:#0a2449;color:#bfe8ff;box-shadow:0 3px #081a36;font-size:18px;font-weight:900;cursor:pointer}.scores{display:flex;gap:8px;margin-bottom:10px}.score-card,.best-card{background:#1b2c5b url(assets/score.png) center/100% 100%;border:1px solid #4376b1;border-radius:9px;display:flex;align-items:center;justify-content:space-between;padding:8px 12px;flex:1;min-width:0;box-shadow:0 3px #0b2547}.score-card span,.best-card span{color:#a8c4e8;font-size:11px;font-weight:800}.score-card strong,.best-card strong{color:#ffce43;font-size:24px;line-height:1;font-weight:1000;text-shadow:0 2px #995b12}.best-card{flex:.85}.board-frame{background:#071a32;border:3px solid #4d80b1;border-radius:5px;padding:3px;box-shadow:0 4px #0b2348,0 10px 20px #091b3c66}.board-inner{position:relative;overflow:hidden;line-height:0;background:#0b1a2d}#board{display:block;width:100%;height:auto;aspect-ratio:3/4;touch-action:none;image-rendering:pixelated}.hint{text-align:center;font-size:12px;font-weight:800;color:#bcd9f2;margin:12px 0 9px}.hint span{color:#ffd960;font-size:9px;padding:0 6px}.tray-area{padding:0 2px}.tray{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}#sound{display:grid;place-items:center;padding:0;line-height:1}.sound-icon{display:block;width:24px;height:24px;pointer-events:none}.sound-muted{display:none}#sound[aria-pressed=false] .sound-muted{display:block}.game-over-line{position:absolute;left:0;right:0;border-top:2px dashed #f7838d;pointer-events:none;line-height:normal;color:#ffacb4}.game-over-line span{position:absolute;right:8px;bottom:5px;font-size:9px;font-weight:800;letter-spacing:1.5px;text-shadow:0 1px 3px #071a32}.piece{height:82px;min-width:0;padding:0;border:3px solid #071f3c;border-radius:14px;background:#0a2449;box-shadow:inset 0 0 0 2px #1b659c;overflow:hidden;touch-action:none;cursor:grab;display:grid;place-items:center;transition:filter .15s,transform .15s}.piece:hover,.piece.selected{filter:brightness(1.3);transform:translateY(-3px)}.piece:active{cursor:grabbing}.piece.empty{opacity:.35;cursor:default;filter:grayscale(.6)}.piece canvas{display:block;width:100%;height:100%;min-width:0;min-height:0;object-fit:contain;object-position:center;pointer-events:none}.help{text-align:center;color:#a9c9e8;font-size:11px;font-weight:700;margin:10px 0 0}.overlay{position:absolute;inset:0;background:#06142ccf;display:grid;place-items:center;line-height:normal;padding:15px}.hidden{display:none}.modal{background:#112c56;border:3px solid #559ad2;border-radius:18px;padding:22px;box-shadow:0 6px #081d3b;text-align:center;width:min(100%,260px)}.modal-icon{display:flex;align-items:center;justify-content:center;height:48px;font-size:39px;line-height:1;color:#ffdb64}.modal h2{font-size:23px;line-height:1.3;margin:8px 0;color:#fff}.modal p{font-size:13px;line-height:1.5;color:#aac8e8;margin:0 0 20px}.modal button{appearance:none;display:flex;align-items:center;justify-content:center;width:100%;min-height:48px;margin:0;padding:10px 16px;border-radius:12px;font-family:inherit;font-size:15px;font-weight:800;line-height:1.4;letter-spacing:.04em;text-align:center;cursor:pointer;touch-action:manipulation;transition:filter .15s,transform .15s}.modal .primary{border:1px solid #72dbf7;background:linear-gradient(180deg,#42c9ee,#179ed3);color:#fff;box-shadow:inset 0 1px #fff5,0 4px #08759f;text-shadow:0 1px 1px #11678e}.modal .secondary{margin-top:14px;border:1px solid #41658b;background:#102848;color:#c7dff3;box-shadow:0 3px #091d39}.modal button:hover{filter:brightness(1.12)}.modal button:active{transform:translateY(2px)}.modal button:focus-visible{outline:3px solid #ffe175;outline-offset:4px}.message{position:absolute;top:20%;left:50%;transform:translate(-50%);white-space:nowrap;pointer-events:none;color:#fff16d;font-size:24px;font-weight:1000;text-shadow:0 3px #9c591c;opacity:0;transition:opacity .2s}.message.show{opacity:1}.level-notice{position:absolute;z-index:2;top:35%;left:50%;width:calc(100% - 40px);max-width:280px;padding:14px 18px;border:2px solid #ffdb64;border-radius:14px;background:linear-gradient(135deg,#173a69f2,#302956f2);color:#ffe887;box-shadow:0 6px 24px #0006,inset 0 0 18px #ffc94b1a;font-size:20px;font-weight:900;line-height:1.6;text-align:center;white-space:pre-line;pointer-events:none;visibility:hidden;opacity:0;transform:translate(-50%,8px) scale(.96);transition:opacity .2s,transform .2s,visibility .2s}.level-notice.show{visibility:visible;opacity:1;transform:translate(-50%) scale(1)}.top-actions{display:flex;gap:8px}.message.show{animation:clear-pop 1s ease-out both}@keyframes clear-pop{0%{opacity:0;transform:translate(-50%,12px) scale(.65)}20%{opacity:1;transform:translate(-50%,-4px) scale(1.15)}45%{opacity:1;transform:translate(-50%) scale(1)}80%{opacity:1}to{opacity:0;transform:translate(-50%,-25px) scale(1)}}@media(prefers-reduced-motion:reduce){.message.show{animation:none;opacity:1}.level-notice{transition:none;transform:translate(-50%)}}html,body{height:100%;overflow:hidden}.viewport{height:100vh;height:100dvh;padding:max(8px,env(safe-area-inset-top)) env(safe-area-inset-right) max(10px,env(safe-area-inset-bottom)) env(safe-area-inset-left);overflow:hidden}.game-viewport{position:relative;width:100%;height:100%;overflow:hidden}.game{position:absolute;top:0;left:50%;width:420px;margin:0;padding:0 12px 10px;display:grid;grid-template-areas:"top" "scores" "hint" "board" "tray" "help";grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto auto auto 82px auto;align-content:start;gap:8px;transform-origin:top center;transform:translate(-50%) scale(var(--game-scale,0))}.top{grid-area:top;min-width:0;padding:0;gap:8px}.logo{font-size:23px;line-height:27px}.logo small{margin-top:3px;font-size:8px;line-height:10px}.top-actions{flex-shrink:0;gap:6px}.round{display:grid;place-items:center;width:40px;height:40px;padding:0;line-height:1}.scores{grid-area:scores;min-width:0;margin:0;gap:6px}.score-card,.best-card{padding:7px 10px;gap:6px}.score-card span,.best-card span{white-space:nowrap;font-size:10px}.score-card strong{font-size:22px}.best-card strong{font-size:18px}.score-card strong,.best-card strong{min-width:0;overflow:hidden;text-overflow:ellipsis;font-variant-numeric:tabular-nums}.board-area{grid-area:board;min-width:0;min-height:0;display:grid;place-items:start center}.board-frame{width:100%;min-width:0}#board{height:auto}.hint{grid-area:hint;margin:0;font-size:11px;line-height:16px}.hint span{padding:0 3px}.tray-area{grid-area:tray;min-width:0;min-height:0;padding:0}.tray{height:100%;gap:8px}.piece{height:100%;min-height:0}.help{grid-area:help;margin:0;font-size:10px;line-height:14px;text-align:center;text-wrap:balance}.overlay{position:fixed;z-index:10;padding:max(16px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));overflow:auto;overscroll-behavior:contain}.modal{max-height:100%;overflow:auto;overscroll-behavior:contain}@media(max-height:600px){.modal{padding:16px}.modal-icon{height:34px;font-size:30px}.modal h2{font-size:21px;margin:6px 0}.modal p{margin-bottom:14px}.modal .secondary{margin-top:10px}}