:root{--ink:#30344b;--muted:#8c8b9e;--paper:#f9f7f3;--line:#e8e4e3;--coral:#ed8567;--coral-dark:#ce654b;--lavender:#eeeaf5;--white:#fffefd;--shadow:0 14px 38px #3430470b;--safe:env(safe-area-inset-bottom,0px)}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;width:100%;height:100%;overscroll-behavior:none}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#eeeaf0;color:var(--ink);display:flex;align-items:center;justify-content:center;overflow:hidden;background-image:radial-gradient(ellipse at 12% 18%,#fff8ec 0,transparent 47%),radial-gradient(ellipse at 90% 86%,#dedfea 0,transparent 45%)}
button{font:inherit;cursor:pointer;border:0;color:inherit;touch-action:manipulation;user-select:none;-webkit-user-select:none}
button:focus-visible{outline:3px solid #ed8567;outline-offset:3px}
button:disabled{cursor:default}
svg{display:block;width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
button:active:not(:disabled){transform:translateY(1px)}
.app{width:100%;max-width:480px;height:100svh;max-height:940px;padding:22px 20px calc(12px + var(--safe));display:flex;flex-direction:column;gap:16px;position:relative;background:linear-gradient(160deg,#fbfaf7,#f5f2f3);overflow:hidden}
.topbar{display:flex;align-items:center;gap:11px;flex:none}
.brandmark{width:43px;height:43px;display:grid;place-items:center;border-radius:15px;background:#f1e3db;color:#b97658;box-shadow:inset 0 1px 0 #ffffffc9}
.brandmark svg{width:29px;height:29px;stroke-width:1.6}
.brand{flex:1}
.eyebrow{font-size:10px;letter-spacing:2.4px;font-weight:750;color:#9c8d85;line-height:1.5}
.brand h1{margin:2px 0 0;font-size:20px;font-weight:750;letter-spacing:1.3px}
.icon-button{width:39px;height:39px;border-radius:13px;background:#ffffffc9;display:grid;place-items:center;color:#77798d;box-shadow:0 3px 10px #34304704;border:1px solid #ebe7e5}
.icon-button svg{width:20px;height:20px}
.levelbar{display:flex;align-items:center;justify-content:space-between;padding:2px 2px 0;flex:none;gap:12px}
.level-info{min-width:0}
.level-kicker{font-size:10px;letter-spacing:1.7px;color:#9996a5;font-weight:700;display:flex;align-items:center;gap:7px}
.level-kicker .tiny-dot{width:5px;height:5px;border-radius:50%;background:#e4a78e}
.level-title{font-size:21px;font-weight:720;margin-top:7px;letter-spacing:.4px;line-height:1.3;white-space:nowrap}
.progress-box{text-align:right}
.progress-label{font-size:11px;color:#92909e;margin-bottom:8px}
.progress-dots{display:flex;justify-content:flex-end;gap:5px}
.progress-dot{width:9px;height:9px;border-radius:50%;background:#dedbe0;transition:.25s}
.progress-dot.done{background:#91b2a9;box-shadow:0 0 0 3px #91b2a918}
.guide{position:relative;flex:none;display:flex;align-items:center;gap:11px;min-height:57px;padding:11px 13px;background:#f0edf5;border:1px solid #e8e4ef;border-radius:18px}
.guide-icon{width:31px;height:31px;border-radius:11px;background:#fff9;display:grid;place-items:center;color:#9490af;flex:none}
.guide-icon svg{width:18px;height:18px}
.guide-copy{flex:1;min-width:0}
.guide-main{font-size:12px;line-height:1.55;font-weight:650;letter-spacing:.1px}
.guide-sub{font-size:10px;color:#9892a4;margin-top:2px;line-height:1.45}
.guide-action{background:none;color:#a49ab3;font-size:10px;padding:8px 0 8px 6px;flex:none}
.board-wrap{flex:1;min-height:200px;position:relative;border-radius:28px;background:linear-gradient(155deg,#f1eee9,#f9f6f0 45%,#ede8e2);border:1px solid #e5dfd8;box-shadow:inset 0 3px 12px #82736308,0 5px 18px #3c303305;overflow:hidden;isolation:isolate}
.board-wrap:before{content:"";position:absolute;inset:0;background-image:radial-gradient(#bdb4a72f .8px,transparent .8px);background-size:15px 15px;pointer-events:none}
.board-wrap:after{content:"";position:absolute;inset:6px;border:1px solid #fff8;border-radius:22px;pointer-events:none}
.board-meta{position:absolute;top:15px;left:17px;right:17px;display:flex;justify-content:space-between;pointer-events:none;z-index:2;font-size:9px;letter-spacing:1.4px;color:#aba294;font-weight:700}
.board-meta .moves{letter-spacing:.2px;color:#a49b8e;font-weight:500;font-variant-numeric:tabular-nums}
canvas{width:100%;height:100%;display:block;position:relative;z-index:1;touch-action:none}
.hit-targets{position:absolute;inset:0;z-index:3;pointer-events:none}
.rod-hit{position:absolute;background:transparent;border-radius:22px;pointer-events:auto;touch-action:manipulation;outline-offset:-2px!important}
.rod-hit:focus-visible{background:#ffffff15;outline:2px solid #d9987e}
.board-foot{position:absolute;bottom:12px;left:0;right:0;text-align:center;color:#b0a69a;font-size:9px;letter-spacing:2px;pointer-events:none;z-index:2}
.queue-pill{position:absolute;z-index:4;left:50%;bottom:34px;transform:translateX(-50%);border-radius:20px;padding:8px 12px;color:#756b62;background:#fffc;box-shadow:0 4px 15px #0001;font-size:11px;white-space:nowrap;display:none}
.queue-pill.on{display:flex;align-items:center;gap:10px}
.queue-pill button{background:none;color:#ad8872;padding:0;font-size:12px}
.tools{display:flex;gap:11px;flex:none}
.tool{flex:1;min-width:0;position:relative;padding:12px 4px 11px;border-radius:19px;background:var(--white);border:1px solid #e9e4e3;box-shadow:0 4px 12px #35304403;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;transition:background .15s,opacity .15s}
.tool .tool-icon{width:32px;height:28px;display:grid;place-items:center;color:#82768f}
.tool svg{width:24px;height:24px;stroke-width:1.7}
.tool .tool-name{font-size:12px;font-weight:650}
.tool .tool-note{font-size:9px;color:#a69da9;line-height:1;margin-top:-1px}
.tool:disabled{opacity:.45}
.tool.accent{background:#f8ebe3;border-color:#ecd6c8}
.tool.accent .tool-icon{color:#bf8266}
.tool.active{border-color:#c7ad99}
.footer{display:flex;align-items:center;justify-content:center;gap:6px;font-size:10px;color:#aaa3ac;letter-spacing:.5px;flex:none}
.footer svg{width:12px;height:12px;stroke-width:1.5}
.toast{position:absolute;z-index:10;bottom:135px;left:50%;transform:translate(-50%,10px);max-width:calc(100% - 46px);background:#37354bef;color:#fff;border:1px solid #ffffff1a;box-shadow:0 8px 20px #3332;padding:11px 16px;border-radius:15px;font-size:12px;line-height:1.6;text-align:center;opacity:0;pointer-events:none;transition:.2s;min-width:160px}
.toast.on{opacity:1;transform:translate(-50%,0)}
.overlay{position:absolute;inset:0;background:#302c3f38;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);z-index:20;display:none;align-items:flex-end;justify-content:center;padding:12px}
.overlay.open{display:flex}
.sheet{width:100%;background:#fcfaf7;border-radius:29px;box-shadow:0 18px 55px #211b4226;padding:24px 23px calc(23px + var(--safe));max-height:92%;overflow-y:auto;animation:sheetIn .24s ease-out}
.sheet-handle{width:33px;height:4px;background:#ddd8dc;border-radius:3px;margin:-10px auto 22px}
.sheet-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}
.sheet h2{font-size:23px;font-weight:740;margin:0;letter-spacing:.3px}
.sheet-sub{color:#9a919b;font-size:12px;line-height:1.75;margin:8px 0 20px}
.close-button{width:30px;height:30px;display:grid;place-items:center;background:#f0ecec;border-radius:50%;color:#9c939f}
.close-button svg{width:16px;height:16px}
.primary{background:#e78a6a;color:#fff;border:1px solid #d87d5e;box-shadow:0 4px 0 #c9765d17;width:100%;padding:15px;border-radius:16px;font-size:15px;font-weight:700;letter-spacing:.4px;display:flex;gap:10px;align-items:center;justify-content:center}
.primary svg{width:19px;height:19px}
.secondary{background:#f0edef;color:#827887;width:100%;padding:13px;border-radius:15px;font-size:13px;margin-top:11px}
.text-action{background:none;color:#a69aa1;font-size:12px;padding:13px;width:100%;margin-top:2px}
.chapter-label{font-size:11px;letter-spacing:.5px;color:#a299a3;margin:17px 0 10px;display:flex;align-items:center;gap:8px}
.chapter-label:before{content:"";height:1px;flex:1;background:#e6dfe4}
.chapter-label:after{content:"";height:1px;flex:1;background:#e6dfe4}
.level-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px}
.level-cell{position:relative;min-width:0;height:62px;border-radius:13px;border:1px solid #e5dfe3;background:#fffdfb;font-size:15px;font-weight:650;color:#8a8191;font-variant-numeric:tabular-nums;padding:6px 2px}
.level-difficulty{font-size:10px;color:#9a919b;margin-top:4px}
.chapter-nav{display:flex;align-items:center;gap:8px}
.chapter-step{width:36px;height:38px;flex:none;border-radius:11px;background:#f0edef;font-size:24px;color:#827887}
.chapter-step:disabled{opacity:.35}
.chapter-select{flex:1;min-width:0}
.chapter-select select{width:100%;font:inherit;font-size:12px;color:var(--ink);border:1px solid #e5dfe3;background:#fffdfb;border-radius:11px;min-height:38px;padding:6px}
.chapter-progress{font-size:11px;color:#918695;margin:10px 0 14px;text-align:center}
.level-jump{margin-top:17px;padding-top:13px;border-top:1px solid #e8e1e4}
.level-jump label{font-size:11px;color:#918695}
.level-jump>div{display:flex;gap:8px;margin-top:7px}
.level-jump input{flex:1;min-width:0;width:100%;border:1px solid #dfd6de;border-radius:10px;background:#fffdfb;font:inherit;font-size:13px;color:var(--ink);padding:10px}
.level-jump button{border-radius:10px;background:#f8e5d8;color:#ac6b46;padding:10px 17px;font-size:12px}
.jump-error{font-size:11px;color:#b46855;line-height:1.5;margin:7px 0 0}
.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}
select:focus-visible,input:focus-visible{outline:3px solid #ed8567;outline-offset:2px}
.level-cell.current{background:#f8e5d8;border-color:#dbab8d;color:#ac6b46}
.level-cell.cleared:after{content:"✓";position:absolute;right:5px;bottom:3px;font-size:9px;color:#86a499}
.level-cell small{font-size:7px;display:block;font-weight:500;margin-top:2px;letter-spacing:.4px}
.settings-row{display:flex;align-items:center;justify-content:space-between;padding:17px 0;border-bottom:1px solid #eee7e8;gap:12px}
.settings-label{font-size:14px;font-weight:620}
.settings-description{font-size:10px;color:#a39aa4;line-height:1.6;margin-top:4px}
.switch{width:44px;height:26px;border-radius:15px;background:#d9d3db;position:relative;flex:none}
.switch:after{content:"";position:absolute;left:3px;top:3px;width:20px;height:20px;background:#fff;border-radius:50%;box-shadow:0 1px 4px #0001;transition:.2s}
.switch.on{background:#dca080}
.switch.on:after{left:21px}
.language-toggle{border:1px solid #e0d5da;padding:8px 10px;border-radius:9px;font-size:11px;background:#fff9}
.win-sheet{text-align:center;padding-top:22px}
.win-icon{width:93px;height:93px;background:radial-gradient(circle,#f4deca,#f6ecdf);border:1px solid #ebd3b9;border-radius:29px;margin:0 auto 17px;display:grid;place-items:center;transform:rotate(-8deg);box-shadow:0 9px 25px #a26b2c0f}
.win-icon svg{width:51px;height:51px;color:#b78a5b;stroke-width:1.3;transform:rotate(8deg)}
.win-kicker{font-size:10px;letter-spacing:2px;color:#bfa58b;margin-bottom:9px;font-weight:700}
.win-sheet h2{font-size:27px}
.win-stats{display:flex;gap:12px;margin:21px 0}
.win-stat{flex:1;background:#f2edf0;border-radius:16px;padding:15px 8px}
.win-stat strong{font-size:26px;font-weight:600;color:#686176;display:block;line-height:1.2;font-variant-numeric:tabular-nums}
.win-stat span{font-size:10px;color:#a69ba6;margin-top:7px;display:block}
.badge{display:inline-flex;align-items:center;gap:5px;border:1px solid #dbc5a8;border-radius:20px;padding:6px 11px;font-size:10px;background:#fbf2e4;color:#aa8a5c;margin-bottom:19px}
.badge svg{width:13px;height:13px}
.help-step{display:flex;gap:12px;padding:15px 0;border-bottom:1px solid #eae3e7;text-align:left}
.help-step .number{width:26px;height:26px;border-radius:50%;background:#f2e4da;display:grid;place-items:center;flex:none;color:#b58d70;font-size:12px;font-weight:700}
.help-step strong{font-size:13px}
.help-step p{margin:5px 0 0;font-size:12px;color:#9c929e;line-height:1.7}
.help-note{font-size:11px;color:#a699a6;line-height:1.8;margin:17px 0 19px}
.spinner{animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}
}
@keyframes sheetIn{from{transform:translateY(22px);opacity:0}
to{transform:translateY(0);opacity:1}
}
@media(min-width:550px){.app{height:calc(100svh - 42px);max-height:880px;border-radius:35px;border:1px solid #fff;box-shadow:0 22px 75px #40364d16;padding-top:25px}
}
@media(max-height:760px){.app{gap:11px;padding-top:14px;padding-bottom:calc(9px + var(--safe))}
.topbar .brandmark{width:37px;height:37px;border-radius:12px}
.brand h1{font-size:18px}
.eyebrow{font-size:8px}
.level-title{font-size:19px;margin-top:5px}
.guide{min-height:52px;padding:8px 11px}
.tool{padding-top:9px;padding-bottom:9px;gap:5px}
.tool .tool-icon{height:23px}
.tool svg{width:22px;height:22px}
.footer{font-size:9px}
.level-kicker{font-size:9px}
.progress-label{font-size:10px}
.sheet{padding-top:22px}
}
@media(max-height:610px){.app{gap:7px;padding-top:9px}
.topbar{gap:8px}
.brand h1{font-size:16px}
.guide-sub{display:none}
.guide{min-height:42px}
.level-title{font-size:17px}
.tool-note{display:none}
.footer{display:none}
.board-wrap{min-height:150px}
.tool{padding:8px}
.sheet{max-height:96%}
}
@media(prefers-reduced-motion:reduce){.sheet{animation:none}
*{scroll-behavior:auto!important}
}


/* Independent workshop shell. Original demo art direction is intentionally preserved. */
[hidden]{display:none!important}
.app{padding-top:max(22px,env(safe-area-inset-top));height:100dvh}
.home{position:absolute;inset:0;z-index:5;padding:25px 28px calc(19px + var(--safe));background:radial-gradient(ellipse at 15% 28%,#fff8ec99,transparent 65%),linear-gradient(160deg,#fbfaf7,#f5f2f3);display:flex;flex-direction:column;align-items:stretch;overflow-y:auto;padding-top:max(25px,env(safe-area-inset-top))}
.home-top{display:flex;align-items:center;justify-content:space-between;flex:none}
.home-top .eyebrow{font-size:8px;letter-spacing:1.4px}
.home-heading{text-align:center;margin-top:clamp(16px,4vh,38px)}
.home-kicker{font-size:9px;letter-spacing:3px;color:#a99c90;font-weight:650}
.home-heading h1{font-size:38px;letter-spacing:4px;font-weight:750;line-height:1.3;margin:14px 0 0}
.home-heading h1 span{display:block;font-size:17px;font-weight:400;letter-spacing:4px;color:#ad9b90;margin-top:5px}
.home-heading p{font-size:12px;color:#a19695;letter-spacing:2px;margin:15px 0 0}
.home-art{flex:1;min-height:150px;max-height:290px;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:8px -15px}
.workshop-illustration{width:100%;height:100%;min-height:140px;max-height:250px;stroke:none;fill:none;overflow:visible;position:relative;z-index:1}
.art-orbit{position:absolute;width:210px;height:210px;border-radius:50%;border:1px solid #e4dcd480;background:radial-gradient(circle,#f1e9df55,transparent 70%)}
.art-orbit:before{content:'';position:absolute;inset:17px;border:1px dashed #e5dcd355;border-radius:50%}
.art-caption{font-size:8px;letter-spacing:2px;color:#b5a99c;position:absolute;bottom:1px;z-index:2}
.home-progress{margin:17px 14px 20px;flex:none}
.home-progress>div:first-child{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#a4999e}
.home-progress strong{font-size:11px;letter-spacing:1px;font-weight:500;color:#9b8b82;font-variant-numeric:tabular-nums}
.home-progress-track{height:4px;background:#e8e2de;border-radius:10px;margin-top:10px;overflow:hidden}
.home-progress-track i{display:block;height:100%;background:#c0c7ae;border-radius:10px;transition:width .3s}
.home-actions{flex:none}
.home-actions>.primary{padding:17px;font-size:16px;box-shadow:0 5px 0 #cb765815,0 7px 20px #e78a6a12;min-height:54px}
.home-resume{text-align:center;color:#b0a2a3;font-size:9px;margin:10px 0 12px;min-height:13px}
.home-secondary{display:flex;gap:11px}
.home-secondary .secondary{margin:0;display:flex;align-items:center;justify-content:center;gap:8px;font-size:11px;padding:13px 4px;background:#ffffff8c;border:1px solid #e8e1e0}
.home-secondary svg{width:16px;height:16px}
.home-footer{display:flex;align-items:center;justify-content:center;gap:5px;flex-wrap:wrap;color:#aaa3ac;font-size:10px;letter-spacing:.5px;margin-top:22px;flex:none}
.home-footer svg{width:12px;height:12px}
.home-footer small{width:100%;text-align:center;font-size:8px;letter-spacing:1px;color:#bdb2b4;margin-top:4px}
.install-button{font-size:10px;padding:10px 0 0;color:#ab9586;min-height:28px}
.is-home>.topbar,.is-home>.levelbar,.is-home>.guide,.is-home>.board-wrap,.is-home>.tools,.is-home>.footer{visibility:hidden}
.storage-warning{position:absolute;top:0;left:0;right:0;z-index:30;background:#fff0d6;color:#8b662e;margin:0;padding:8px 12px;font-size:11px;text-align:center}
.noscript{position:fixed;inset:0;z-index:100;display:grid;place-content:center;background:#f9f7f3;color:#30344b;text-align:center;line-height:2}
@media(min-width:550px){.app{height:calc(100dvh - 42px)}}
@media(max-width:360px){.app{padding-left:13px;padding-right:13px}.home{padding-left:22px;padding-right:22px}.guide-main{font-size:11px}.guide-action{font-size:9px}.home-heading h1{font-size:33px}.level-title{font-size:18px}}
@media(max-height:740px){.home{padding-top:max(14px,env(safe-area-inset-top));padding-bottom:12px}.home-heading{margin-top:12px}.home-heading h1{font-size:32px;margin-top:9px}.home-heading h1 span{font-size:14px}.home-heading p{margin-top:10px}.home-art{min-height:130px;margin-top:0;margin-bottom:0}.home-progress{margin:10px 10px 14px}.home-footer{margin-top:13px}.home-actions>.primary{padding:14px;min-height:48px}.art-orbit{width:160px;height:160px}}
@media(max-height:560px){.home{display:grid;grid-template-columns:1fr 1fr;column-gap:24px;align-content:center;padding:15px 24px}.home-top{grid-column:1 / -1;margin-bottom:5px}.home-heading{grid-column:1;margin-top:0}.home-heading h1{font-size:28px}.home-art{grid-column:1;grid-row:3 / 6;min-height:140px;height:150px}.home-progress{grid-column:2;grid-row:2;margin:10px 0}.home-actions{grid-column:2;grid-row:3 / 5}.home-footer{grid-column:2;grid-row:5}.art-caption{display:none}}
@media(orientation:landscape) and (max-height:550px){.app{max-width:900px;width:100%;height:100dvh;max-height:none;border-radius:0;display:grid;grid-template-columns:210px 1fr;grid-template-rows:auto auto 1fr auto;gap:8px 16px;padding:12px 18px max(12px,var(--safe))}.topbar{grid-column:1;grid-row:1}.levelbar{grid-column:1;grid-row:2;align-items:flex-start}.level-title{font-size:16px}.progress-box{display:none}.guide{grid-column:1;grid-row:3;align-self:start}.guide-icon{display:none}.guide-sub{display:block}.guide-action{padding-left:0}.board-wrap{grid-column:2;grid-row:1 / 5;min-height:0;height:100%}.tools{grid-column:1;grid-row:4;gap:6px}.tool{padding:8px 2px;gap:3px}.tool-note,.footer{display:none}.tool .tool-name{font-size:10px}.overlay{padding:10px}.sheet{max-width:480px;max-height:96%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}