:root{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#1c2c45;background:#f1f5f9;font-synthesis:none;--ink:#1c2c45;--muted:#63758e;--blue:#367df4;--line:#dce5ef}
*{box-sizing:border-box}body{margin:0;min-width:280px;background:linear-gradient(145deg,#f1f6fb,#edf3fa 55%,#f6f8fc);min-height:100dvh}button,input{font:inherit}button{color:inherit;border:0;background:none;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:disabled{opacity:.36;cursor:default}button:focus-visible,input:focus-visible{outline:3px solid #2b70db;outline-offset:3px}button:hover:not(:disabled){filter:brightness(.97)}svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}img{max-width:100%}.svg-defs{position:absolute;width:0;height:0;overflow:hidden}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}
.app-shell{width:min(100%,480px);margin:0 auto;padding:14px 0 max(14px,env(safe-area-inset-bottom))}.site-header{display:grid;grid-template-columns:44px 1fr 44px;align-items:center;padding:0 14px;min-height:58px}.icon-button{height:44px;width:44px;display:grid;place-items:center;border-radius:10px}.icon-button svg{height:27px;width:27px;stroke-width:2.2}.brand{display:flex;justify-content:center;align-items:center;gap:9px;margin:0;font-size:25px;font-weight:800;letter-spacing:.3px;white-space:nowrap}.brand img{width:35px;height:38px}.page{padding:0 14px}.game-card{padding:0;background:transparent}.level-header{display:flex;justify-content:center;align-items:center;gap:14px;min-height:67px;padding:9px 0 12px}.level-header h2{display:flex;align-items:center;gap:12px;white-space:nowrap;font-size:27px;font-weight:800;letter-spacing:.4px;margin:0;line-height:1.4}.level-header h2 span{border-left:1px solid #ccd9e9;padding-left:12px;font-size:18px;color:#43546c;font-weight:500;letter-spacing:0}.difficulty-badge{flex-shrink:0;min-height:36px;padding:5px 12px;border-radius:8px;background:#d7e7ff;color:#2670df;font-size:19px;font-weight:700;line-height:1.3;letter-spacing:.3px;font-variant-numeric:tabular-nums}
.board-rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;padding:6px;margin:0 0 10px;background:#fff;border-radius:10px}.board-rules>span{display:flex;align-items:center;justify-content:center;min-height:46px;border-radius:6px;background:#eaf0f7;color:#26364e;font-size:clamp(9px,3vw,13px);font-weight:650;white-space:nowrap;letter-spacing:-.15px}.game-status{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;background:#fff;border-radius:9px;padding:8px 12px;margin-bottom:9px;min-height:48px;font-variant-numeric:tabular-nums}.found-status{display:flex;gap:5px;align-items:center;white-space:nowrap;font-size:19px;font-weight:700;letter-spacing:.4px}.found-status img{width:30px;height:31px;margin-right:4px}.found-status strong{font-size:21px;font-weight:750}.timer{display:flex;gap:7px;align-items:center;justify-content:center;font-size:17px;font-weight:650;white-space:nowrap}.timer svg{width:21px;height:21px;stroke-width:2}.lives{display:flex;align-items:center;justify-content:flex-end;gap:5px;white-space:nowrap;color:#ff6977}.lives svg{width:23px;height:23px;fill:currentColor;stroke:none}.lives .lost{color:#dce4ed}
.board-wrap{position:relative;background:#fff;border-radius:11px;padding:5px;isolation:isolate}.board{display:grid;grid-template-columns:repeat(var(--size,6),minmax(0,1fr));gap:4px;user-select:none;touch-action:none}.cell{aspect-ratio:1;min-width:0;width:100%;padding:0;border-radius:6px;background:var(--cell-color);position:relative;display:grid;place-items:center;transition:filter .12s,transform .12s;outline-offset:-4px}.cell:hover:not(:disabled){filter:brightness(1.055)}.cell:active{transform:scale(.95)}.cell:focus-visible{outline:3px solid #1f3b62;outline-offset:-4px;z-index:2}.cell.cow img{width:77%;height:77%;animation:pop .25s ease-out;pointer-events:none}.cell .x-mark{width:48%;height:48%;position:relative;display:block;pointer-events:none}.x-mark:before,.x-mark:after{content:'';position:absolute;width:119%;height:21%;border-radius:9px;background:#fff;left:-9%;top:40%;transform:rotate(45deg)}.x-mark:after{transform:rotate(-45deg)}.cell.auto .x-mark{opacity:.86;width:43%;height:43%}.cell.hinted{animation:hint-ring 1s ease 3;z-index:1}.cell.wrong{animation:shake .3s ease;background:#efa6ad!important}.board.finished .cell{cursor:default}.board.finished .cell.cow img{animation:happy .6s ease-in-out 2}
.operation-instruction{font-size:13px;color:#526782;line-height:1.5;text-align:center;margin:8px 0 10px;letter-spacing:.3px}.board-caption{display:none;text-align:center;font-size:13px;line-height:1.8;color:#3f6cb1;margin:8px 0}.board-caption:has(button){display:block}.board-caption button{padding:5px;min-height:34px}.input-mode{display:flex;overflow:hidden;min-height:48px;border:1px solid #cddbef;border-radius:10px;background:#fff}.mode-button{display:flex;align-items:center;justify-content:center;gap:11px;width:50%;padding:9px 4px;color:#34465e;font-size:17px;font-weight:600;min-width:0;white-space:nowrap}.mode-button.selected{background:#367df4;color:#fff}.mode-button img{width:30px;height:30px;pointer-events:none}.cross-symbol{width:24px;height:24px;position:relative;display:block}.cross-symbol:before,.cross-symbol:after{content:'';position:absolute;left:-1px;top:9px;width:27px;height:6px;border-radius:4px;background:currentColor;transform:rotate(45deg)}.cross-symbol:after{transform:rotate(-45deg)}.actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:10px}.actions button{display:flex;align-items:center;justify-content:center;gap:9px;font-size:16px;font-weight:600;border:1px solid #e1e8f1;background:#fff;border-radius:9px;padding:9px 4px;min-height:46px;white-space:nowrap}.actions svg{height:25px;width:25px;stroke-width:2}.actions #hint{background:#deebff;border-color:#deebff;color:#2675ed}.game-bottom{border-top:1px solid #d5e1ef;margin-top:10px;padding-top:5px}.toggle-label{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:43px;font-size:15px;font-weight:550;color:#485c77;cursor:pointer;position:relative}.toggle-label input{position:absolute;right:0;top:5px;opacity:0;width:47px;height:32px;cursor:pointer}.switch{width:43px;height:25px;border-radius:20px;background:#b7c4d4;position:relative;pointer-events:none;transition:background .2s}.switch:after{content:'';position:absolute;width:19px;height:19px;left:3px;top:3px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #10244115;transition:transform .2s}.toggle-label input:checked+.switch{background:#367df4}.toggle-label input:checked+.switch:after{transform:translateX(18px)}.toggle-label input:focus-visible+.switch{outline:3px solid #2b70db;outline-offset:3px}
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,12px);background:#203651f2;color:#fff;font-size:13px;padding:12px 18px;max-width:min(90vw,440px);width:max-content;border-radius:10px;z-index:30;opacity:0;pointer-events:none;transition:.2s;line-height:1.8;text-align:center;box-shadow:0 8px 25px #10244118}.toast.show{opacity:1;transform:translate(-50%,0)}.dialog{border:1px solid #e0e7f0;border-radius:18px;background:#fff;color:var(--ink);padding:31px;max-width:440px;width:calc(100% - 30px);box-shadow:0 24px 100px #17335526;max-height:85dvh;overflow-y:auto}.dialog::backdrop{background:#18344f66;backdrop-filter:blur(4px)}.dialog-close{position:absolute;right:10px;top:7px;height:44px;width:44px;border-radius:8px;font-size:28px;color:#74859a;line-height:1}.dialog-kicker{font-size:10px;font-weight:600;color:#7e94af;letter-spacing:1.8px}.dialog h2{font-size:24px;font-weight:750;margin:11px 0 15px;line-height:1.5}.dialog p{font-size:13px;line-height:1.9;color:#62758d}.help-steps{display:flex;flex-direction:column;gap:17px;margin:24px 0}.help-steps>div{padding-left:34px;position:relative}.help-steps>div>span{position:absolute;left:0;font-size:12px;color:#6f9ce0;top:1px}.help-steps strong{font-size:14px;font-weight:650}.help-steps p{font-size:12px;margin:5px 0 0}.dialog .dialog-note{background:#edf3fb;border-radius:9px;padding:13px;font-size:11px;line-height:1.9}.primary-button{width:100%;background:#367df4;color:#fff;display:flex;align-items:center;justify-content:center;gap:12px;min-height:47px;padding:13px;border-radius:9px;font-size:14px;font-weight:600;margin-top:23px}.primary-button svg{width:18px;height:18px}.secondary-button{font-size:12px;display:block;margin:15px auto 0;min-height:36px;padding:6px 12px;color:#4f74ac}.level-group-title{font-size:13px;margin:24px 0 12px;font-weight:600;color:#5d779b}.level-buttons{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.level-select{background:#f1f5fb;border:1px solid #e0e8f4;border-radius:8px;height:47px;position:relative;font-size:14px;color:#68809f}.level-select.completed{background:#dceaff;color:#3476d9}.level-select.completed:after{content:'✓';position:absolute;bottom:3px;right:5px;font-size:9px}.level-select.current{border:2px solid #367df4;color:#2670df}.result-dialog{text-align:center}.result-cow{margin:0 auto 18px;width:92px;height:92px;display:grid;place-items:center;background:#eaf2ff;border-radius:50%}.result-cow img{width:72px;animation:pop .4s}.result-stats{display:flex;justify-content:space-evenly;padding:18px 0;border-top:1px solid #e6edf5;border-bottom:1px solid #e6edf5;margin-top:23px}.result-stats strong{font-size:21px;display:block;color:#3478df;font-weight:600}.result-stats small{display:block;font-size:11px;color:#8192aa;margin-top:5px}
.settings-list{display:flex;flex-direction:column;gap:7px;margin:20px 0}.settings-item{display:flex;align-items:center;width:100%;text-align:left;gap:13px;min-height:66px;border:1px solid #e4ebf4;border-radius:10px;padding:11px 13px;color:#5c7391;background:#f8fafc}.settings-item>span{flex:1}.settings-item strong{display:block;font-size:14px;font-weight:600;color:#304864}.settings-item small{display:block;font-size:10px;line-height:1.7;margin-top:4px;color:#8093ad}.settings-item>small{font-size:10px;color:#6e8bb1;white-space:nowrap}.settings-item>svg{height:21px;width:21px}.settings-item>svg:last-child{height:17px;width:17px}.settings-item.active{background:#eaf2ff;border-color:#cfdef4;color:#367df4}.journey-card{margin-top:23px;background:#f2f6fc;border-radius:10px;padding:15px}.journey-heading{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#6b819f}.journey-heading strong{font-size:20px;font-weight:650;color:#367df4;margin-right:3px}.progress-track{height:5px;background:#dfe8f4;border-radius:5px;margin:12px 0 8px;overflow:hidden}.progress-track>span{display:block;height:100%;width:0;background:#6ca0f1;transition:width .3s}.journey-card p{font-size:10px;margin:8px 0 0;color:#8294ae}.journey-card .secondary-button{margin-top:8px;font-size:12px}.save-note{display:flex;align-items:center;justify-content:center;gap:5px;font-size:10px!important;color:#8d9eb5!important;margin-top:19px}.save-note svg{height:13px;width:13px}
#confetti{position:absolute;inset:0;overflow:hidden;pointer-events:none;border-radius:11px;z-index:3}#confetti i{position:absolute;width:7px;height:11px;left:var(--x);top:-16px;background:var(--color);animation:confetti 2.3s ease-out forwards;animation-delay:var(--delay);border-radius:2px}@keyframes pop{0%{transform:scale(.4) rotate(-8deg)}70%{transform:scale(1.1) rotate(3deg)}100%{transform:scale(1)}}@keyframes hint-ring{0%,100%{box-shadow:0 0 0 0 #367df4}50%{box-shadow:0 0 0 3px #367df4}}@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}@keyframes happy{50%{transform:translateY(-6px) rotate(-4deg)}}@keyframes confetti{100%{transform:translateY(580px) rotate(350deg);opacity:0}}
@media(max-width:600px){.app-shell{padding-top:5px}.site-header{min-height:52px;padding:0 10px}.brand{font-size:22px;gap:8px}.brand img{width:31px;height:34px}.page{padding:0 12px}.level-header{min-height:56px;padding:6px 0 10px;gap:10px}.level-header h2{font-size:24px;gap:10px}.level-header h2 span{font-size:16px;padding-left:10px}.difficulty-badge{font-size:17px;min-height:31px;padding:4px 10px}.board-rules{padding:5px;gap:4px;margin-bottom:8px;border-radius:9px}.board-rules>span{min-height:41px;border-radius:5px}.game-status{min-height:44px;padding:7px 10px;margin-bottom:8px}.found-status{font-size:17px;gap:3px}.found-status strong{font-size:19px}.found-status img{height:27px;width:27px;margin-right:3px}.timer{font-size:15px;gap:5px}.timer svg{height:19px;width:19px}.lives{gap:4px}.lives svg{width:21px;height:21px}.board{gap:3px}.board-wrap{padding:5px;border-radius:9px}.cell{border-radius:5px}.operation-instruction{font-size:12px;margin:7px 0 9px}.input-mode{min-height:45px;border-radius:9px}.mode-button{font-size:16px;padding:7px 3px;gap:10px}.mode-button img{height:28px;width:28px}.cross-symbol{transform:scale(.9)}.actions{gap:8px;margin-top:9px}.actions button{min-height:44px;font-size:15px;gap:8px;padding:8px 3px}.actions svg{width:23px;height:23px}.game-bottom{margin-top:9px;padding-top:3px}.toggle-label{min-height:43px;font-size:14px}.dialog{padding:28px 24px}}
@media(max-width:360px){.page{padding:0 10px}.brand{font-size:21px}.level-header{gap:8px;min-height:51px}.level-header h2{font-size:22px;gap:8px}.level-header h2 span{font-size:14px;padding-left:8px}.difficulty-badge{font-size:15px;padding:4px 8px;min-height:29px}.board-rules>span{min-height:38px;font-size:9px;letter-spacing:-.2px}.game-status{padding:7px 9px}.found-status{font-size:16px}.found-status strong{font-size:17px}.found-status img{height:24px;width:24px}.timer{font-size:14px;gap:4px}.timer svg{height:17px;width:17px}.lives{gap:3px}.lives svg{width:18px;height:18px}.mode-button{font-size:14px;gap:8px}.mode-button img{height:26px;width:26px}.cross-symbol{transform:scale(.8)}.actions button{font-size:14px;gap:6px}.actions svg{width:21px;height:21px}.operation-instruction{font-size:11px}.dialog{padding:27px 19px}.dialog h2{font-size:22px}.settings-item{padding:10px;gap:10px}}
@media(max-height:760px) and (max-width:600px){.app-shell{padding-top:0;padding-bottom:max(7px,env(safe-area-inset-bottom))}.site-header{min-height:47px}.level-header{min-height:49px;padding:3px 0 7px}.board-rules{margin-bottom:7px}.board-rules>span{min-height:36px}.game-status{min-height:40px;padding-top:5px;padding-bottom:5px;margin-bottom:7px}.operation-instruction{margin:5px 0 7px}.actions{margin-top:7px}.game-bottom{margin-top:7px}.toggle-label{min-height:39px}}
.audio-settings{background:#f2f6fd;border:1px solid #dfe8f5;border-radius:11px;padding:15px;margin-top:18px}.audio-settings h3{margin:0 0 9px;font-size:14px;font-weight:700;color:#385a88}.audio-toggle{font-size:13px;min-height:48px}.audio-toggle strong{display:block;font-weight:600}.audio-toggle small{display:block;font-size:10px;font-weight:400;color:#8294ac;margin-top:4px}.audio-toggle input{top:8px}.volume-row{display:flex;align-items:center;gap:9px;min-height:37px;font-size:10px;color:#7b8eaa}.volume-row input{min-width:0;flex:1;width:100%;height:28px;margin:0;accent-color:#367df4;cursor:pointer}.volume-row output{width:33px;text-align:right;flex-shrink:0;color:#5877a2;font-variant-numeric:tabular-nums}.audio-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;border-top:1px solid #e0e8f4;margin-top:8px;padding-top:5px}.audio-footer #audio-status{font-size:10px;line-height:1.8;color:#7a92b0;margin:0}.audio-footer button{min-height:36px;white-space:nowrap;font-size:11px;font-weight:550;color:#3977d3;padding:6px 0 6px 8px}.audio-toggle input:disabled~.switch{opacity:.45}.volume-row input:disabled{opacity:.45;cursor:default}
.level-select.updated:after{content:'新';position:absolute;right:4px;top:3px;font-size:8px;line-height:13px;background:#e0edff;color:#427fd5;border-radius:3px;padding:0 3px}.level-select.updated{padding-top:5px}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}