:root{--mb-ink:#12345a;--mb-blue:#1266b0;--mb-teal:#087f85;--mb-gold:#ffcd47;--mb-line:#bdd5e9;--mb-paper:#fffdf8;--mb-soft:#eff8fd;--mb-radius:22px;color-scheme:light}
*{box-sizing:border-box}body{margin:0;color:var(--mb-ink);background:linear-gradient(160deg,#e6f5fb,#fdf4d7);font-family:system-ui,"BIZ UDPGothic","Yu Gothic",sans-serif;font-size:1rem;line-height:1.6}button,input,output{font:inherit}button{cursor:pointer;touch-action:manipulation}button:disabled{cursor:default;opacity:.48}button:focus-visible,input:focus-visible,summary:focus-visible,[tabindex="-1"]:focus-visible{outline:3px solid #af6600;outline-offset:4px}[hidden]{display:none!important}
.mb-main{width:min(100% - 24px,900px);margin:18px auto 30px}.mb-card{padding:clamp(20px,4vw,36px);border:1px solid #c6d9e4;border-radius:var(--mb-radius);background:var(--mb-paper);box-shadow:0 8px 0 #cbe1e5}.mb-draft{font-size:.875rem;text-align:center;margin:0 0 14px;color:#795000;background:#fff1b8;border-radius:8px;padding:5px}.mb-title-art{display:flex;align-items:center;justify-content:center;gap:16px;height:74px}.mb-title-art span{font-size:1.45rem;font-weight:900;padding:4px 18px;background:#fff2bd;border:2px solid #d49b00;border-radius:10px;box-shadow:0 5px 0 #e4b225;transform:rotate(-6deg)}.mb-title-art span:nth-child(2){background:#dff4ef;border-color:var(--mb-teal);box-shadow:0 5px 0 #79bdba;transform:rotate(6deg)}.mb-title-art i{font-style:normal;background:var(--mb-blue);color:white;font-size:1.5rem;font-weight:800;border-radius:14px;padding:4px 18px}
h1,h2,h3,p{overflow-wrap:anywhere}#game-title{font-size:clamp(1.9rem,5vw,3rem);font-weight:900;letter-spacing:.04em;line-height:1.25;text-align:center;margin:18px 0 10px}.mb-title-break{display:none}.mb-lead{text-align:center;margin:0 0 24px;font-weight:700}.mb-settings{border:0;padding:0;margin:20px 0}.mb-settings legend{font-weight:800;margin-bottom:8px}.mb-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mb-options label{display:flex;align-items:center;gap:10px;padding:14px;border:2px solid var(--mb-line);border-radius:15px;background:white;cursor:pointer}.mb-options label:has(input:checked){border-color:var(--mb-blue);background:#eaf5ff;box-shadow:0 3px 0 #a5cee9}.mb-options input{width:20px;height:20px;flex-shrink:0;accent-color:var(--mb-blue)}.mb-options small{display:block;font-size:.875rem}.mb-options b{font-size:1.0625rem}.mb-best{text-align:center;min-height:1.6em;font-weight:700}.mb-button{min-height:48px;border:1px solid #89b8d7;border-radius:13px;padding:10px 16px;background:white;color:var(--mb-ink);font-weight:750}.mb-primary{background:var(--mb-blue);color:white;border-color:#06518f;box-shadow:0 4px 0 #114778}.mb-start{display:block;width:min(100%,400px);margin:18px auto 4px;font-size:1.2rem}.mb-save-note{font-size:.875rem;color:#4c6276;text-align:center}.mb-instructions{margin-top:22px;border-top:1px solid var(--mb-line);padding-top:16px}.mb-instructions summary{cursor:pointer;font-weight:700}.mb-instructions p{font-size:.9375rem}.mb-text-button{display:block;min-height:48px;margin:12px auto 0;border:0;background:transparent;color:var(--mb-blue);text-decoration:underline;padding:10px}
body.mb-playing .mb-main{margin:0 auto;width:min(100% - 16px,1000px)}.mb-play{height:min(720px,calc(100dvh - var(--dm-common-header-height,58px)));min-height:460px;display:flex;flex-direction:column;gap:10px;padding:10px 0 max(10px,env(safe-area-inset-bottom))}.mb-hud{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) auto;gap:6px;flex-shrink:0;align-items:stretch}.mb-hud>div{background:var(--mb-ink);color:white;border-radius:11px;padding:4px;text-align:center;line-height:1.3;display:flex;flex-direction:column;justify-content:center}.mb-hud span{font-size:.8125rem}.mb-hud strong{font-size:1.2rem;white-space:nowrap}.mb-hud .mb-pause{padding:8px;min-width:48px}.mb-play-body{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:18px;flex:1;min-height:0}.mb-arena{position:relative;min-height:160px;border:2px solid #b4d4e5;border-radius:18px;overflow:hidden;background:repeating-linear-gradient(0deg,transparent,transparent 39px,#d5eaf5 40px),linear-gradient(#f2fbff,#dceef8)}.mb-arena-caption{position:absolute;top:8px;left:12px;color:#526c83;font-size:.8125rem}.mb-blocks{position:absolute;inset:35px 0 28px}.mb-block{position:absolute;left:8%;width:72%;height:88px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:3px solid #114778;border-radius:14px;box-shadow:0 5px 0 #accbd9;background:#fff3bc;font-weight:900;line-height:1.15;will-change:transform}.mb-block small{font-size:.8125rem;background:var(--mb-ink);color:white;padding:2px 10px;border-radius:6px;margin-bottom:4px}.mb-block b{font-size:clamp(1.6rem,4vw,2.5rem);letter-spacing:.05em}.mb-block.is-next{width:57%;left:auto;right:5%;height:68px;background:#e9f7f1;border:2px dashed #59878d;box-shadow:none;color:#466475}.mb-block.is-next small{background:#e9f7f1;color:#466475;margin-bottom:0}.mb-block.is-next b{font-size:clamp(1.3rem,3vw,1.8rem)}.mb-ground{position:absolute;bottom:0;left:0;right:0;background:#9cb6bb;border-top:4px solid #55767e;height:25px;text-align:center;font-size:.75rem;color:#173745}.mb-controls{display:flex;flex-direction:column;justify-content:center;gap:12px;min-width:0}.mb-answer-line{display:flex;align-items:center;justify-content:center;gap:12px;font-weight:800;min-height:68px}.mb-answer-line>div{display:flex;flex-direction:column;align-items:center}.mb-answer-line span{font-size:.875rem}.mb-answer-line strong{font-size:1.5rem;line-height:1.2}.mb-answer-line output{display:flex;align-items:center;justify-content:center;min-width:92px;min-height:60px;background:white;border:3px solid #cda22e;border-radius:12px;font-size:2rem;font-weight:900}.mb-keypad{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.mb-keypad button{min-height:62px;border:2px solid #88bade;border-radius:13px;background:#f6fbff;color:var(--mb-ink);font-weight:800;font-size:1.65rem;box-shadow:0 3px 0 #b2cfe1}.mb-keypad button:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 #b2cfe1}.mb-keypad button small{display:block;font-size:.75rem;line-height:1}.mb-keypad .mb-submit{font-size:1.125rem;background:var(--mb-blue);color:white;border-color:#07508e}.mb-feedback{position:absolute;bottom:32px;left:6px;right:6px;min-height:1.6em;text-align:center;font-weight:850;margin:0;color:#075e66;background:#fffdf3e8;border-radius:8px;pointer-events:none}.mb-feedback:empty{background:transparent}.mb-feedback[data-kind="wrong"],.mb-feedback[data-kind="fallen"]{color:#895200}.mb-particles{position:absolute;inset:0;pointer-events:none}.mb-particles i{position:absolute;left:50%;top:50%;width:9px;height:9px;background:#ffc126;border-radius:50%;animation:mb-pop .55s ease-out forwards;--angle:0deg}.mb-particles i:nth-child(2n){background:#159c9a}@keyframes mb-pop{to{transform:rotate(var(--angle)) translateX(70px) scale(.2);opacity:0}}
.mb-pause-screen,.mb-access{text-align:center;max-width:640px;margin:30px auto}.mb-pause-screen h2,.mb-result h2{font-size:2rem;line-height:1.35}.mb-pause-screen .mb-button{display:block;width:min(100%,340px);margin:18px auto}.mb-symbol{font-size:3rem;font-weight:900;color:var(--mb-blue);margin:0}.mb-result{text-align:center}.mb-result-mark{margin:0 auto;width:58px;height:58px;border-radius:50%;background:#d9f3e9;color:#057663;font-size:2.2rem;font-weight:900}.mb-result h2{margin:14px 0 4px}.mb-new-best{background:#fff1b0;color:#745000;border-radius:10px;padding:8px;font-weight:850}.mb-result-numbers{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mb-result-numbers div{padding:14px 6px;background:#eef7fd;border:1px solid var(--mb-line);border-radius:12px}.mb-result-numbers dt{font-size:.875rem}.mb-result-numbers dd{margin:2px 0 0;font-size:1.5rem;font-weight:850}.mb-result-definition{font-size:.875rem;text-align:left;color:#485d71}.mb-save-box{font-size:.875rem;padding:12px;background:#fff7d6;border:1px solid #e6ca65;border-radius:12px}.mb-save-box p{margin:3px 0}.mb-review{margin:22px 0;border-top:1px solid var(--mb-line);padding-top:15px}.mb-review h3{font-size:1.2rem}.mb-review .mb-button{margin:6px}.mb-result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.mb-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
@media(max-width:600px){.mb-main{margin-top:12px}.mb-title-art{gap:10px}.mb-title-art span{padding:4px 12px;font-size:1.25rem}.mb-title-art i{padding:4px 12px}.mb-options{gap:8px}.mb-options label{padding:10px 8px;gap:6px}.mb-options b{font-size:1rem}.mb-options small{font-size:.8125rem}.mb-play{min-height:450px;gap:7px;padding-top:7px}.mb-play-body{display:flex;flex-direction:column;gap:6px}.mb-arena{flex:1;min-height:148px}.mb-blocks{inset:24px 0 25px}.mb-block{height:66px;width:56%;left:6%}.mb-block b{font-size:1.65rem}.mb-block small{font-size:.75rem;padding:1px 6px}.mb-block.is-next{height:52px;width:46%;right:4%}.mb-block.is-next b{font-size:1.3rem}.mb-block.is-next small{font-size:.75rem}.mb-arena-caption{top:2px;font-size:.75rem}.mb-feedback{bottom:26px;font-size:.875rem}.mb-controls{flex:0 0 auto;gap:6px}.mb-answer-line{min-height:48px;gap:10px}.mb-answer-line span{font-size:.8125rem}.mb-answer-line strong{font-size:1.375rem}.mb-answer-line output{min-width:78px;min-height:46px;font-size:1.8rem}.mb-keypad{gap:6px}.mb-keypad button{min-height:48px;border-radius:10px;font-size:1.4rem;line-height:1.1}.mb-keypad .mb-submit{font-size:1rem}.mb-keypad button small{font-size:.6875rem;margin-top:2px}.mb-result-numbers{grid-template-columns:repeat(2,1fr)}.mb-result-numbers dd{font-size:1.35rem}.mb-result-actions .mb-button{flex:1 1 100%}}
@media(max-width:360px){.mb-title-break{display:inline}.mb-options label{flex-direction:column;align-items:flex-start}.mb-options label span{line-height:1.5}.mb-play{min-height:448px}.mb-hud{gap:4px}.mb-hud span{font-size:.75rem}.mb-hud strong{font-size:1.0625rem}}
@media(min-width:601px) and (max-height:550px){.mb-play{min-height:305px;height:calc(100dvh - var(--dm-common-header-height,58px));gap:6px;padding-top:6px}.mb-play-body{gap:12px;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr)}.mb-controls{gap:6px}.mb-keypad{gap:4px}.mb-keypad button{min-height:48px;font-size:1.25rem;border-radius:9px}.mb-answer-line{min-height:40px;gap:8px}.mb-answer-line output{min-height:38px;font-size:1.5rem}.mb-answer-line strong{font-size:1.25rem}.mb-answer-line span{font-size:.75rem}.mb-hud>div{padding:2px}.mb-hud strong{font-size:1rem}.mb-hud .mb-pause{min-height:48px}.mb-blocks{inset:24px 0 25px}.mb-block{height:66px}.mb-block.is-next{height:52px}.mb-block b{font-size:1.65rem}.mb-block.is-next b{font-size:1.3rem}}
.mb-postplay h2{font-size:clamp(1.4rem,5vw,2rem);line-height:1.4}.mb-postplay-actions{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}.mb-postplay-actions .mb-button{display:flex;align-items:center;justify-content:center;text-align:center;text-decoration:none;max-width:100%;flex:1 1 220px}.mb-postplay-check{display:flex;align-items:center;gap:12px;padding:16px 8px;margin:12px 0;min-height:48px;cursor:pointer}.mb-postplay-check input{width:24px;height:24px;flex-shrink:0}.mb-postplay .mb-result-numbers{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.mb-postplay .mb-result-numbers dd{overflow-wrap:anywhere;font-size:1.25rem}.mb-postplay #postplay-publish{width:100%}.mb-postplay a:focus-visible{outline:3px solid #af6600;outline-offset:4px}
/* Short stages need distinct horizontal lanes as well as target labels. */
.mb-ranking h2{font-size:clamp(1.5rem,5vw,2rem);line-height:1.35}.mb-ranking-entries{list-style:none;padding:0;margin:18px 0;display:grid;gap:8px}.mb-ranking-entries li{display:grid;grid-template-columns:2.5em minmax(0,1fr) auto;align-items:center;gap:8px;padding:12px;background:#eef7fd;border:1px solid var(--mb-line);border-radius:12px}.mb-ranking-entries .mb-rank{font-weight:850;color:var(--mb-blue)}.mb-ranking-entries .mb-public-name{overflow-wrap:anywhere}.mb-ranking-entries .mb-rank-score{font-weight:850;white-space:nowrap}.mb-ranking-participation{border-top:1px solid var(--mb-line);margin-top:24px;padding-top:8px}.mb-ranking-participation p{font-size:.9375rem}.mb-ranking-participation .mb-button{margin:4px 0;max-width:100%}.mb-ranking #ranking-pending{margin-top:18px}.mb-ranking-entries:empty{display:none}
@media(max-width:600px),(min-width:601px) and (max-height:550px){.mb-block{left:4%;width:50%}.mb-block.is-next{left:auto;right:4%;width:40%}}
.mb-migration h2{font-size:clamp(1.35rem,5vw,2rem);line-height:1.4}.mb-migration-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}.mb-migration-choices section{min-width:0;border:2px solid var(--mb-line);border-radius:16px;padding:16px;background:white}.mb-migration-choices h3{font-size:1.15rem;margin:0 0 12px}.mb-migration-choices dl{margin:0 0 16px}.mb-migration-choices dl div{border-bottom:1px solid #dce9f1;padding:8px 0}.mb-migration-choices dt{font-size:.875rem;color:#4c6276}.mb-migration-choices dd{margin:0;font-weight:750;overflow-wrap:anywhere}.mb-migration-choices .mb-button{width:100%;white-space:normal}.mb-migration-choices .mb-button[aria-pressed="true"]{border:3px solid var(--mb-blue);background:#eaf5ff}.mb-migration .mb-postplay-actions .mb-text-button{flex:1 1 220px;max-width:100%;margin:0}.mb-access .mb-button{margin:8px}.mb-migration #migration-status{font-weight:700}.mb-migration #migration-confirmation h3{margin-top:0}
@media(max-width:600px){.mb-migration-choices{grid-template-columns:minmax(0,1fr);gap:12px}.mb-migration-choices section{padding:12px}.mb-migration-choices dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}.mb-particles{display:none}.mb-block{will-change:auto}}