/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.relative{position:relative}.start{inset-inline-start:var(--spacing)}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}}:root{--ink:#213547;--red:#ff3b30;--yellow:#ffd84d;--blue:#2186d9;--green:#55b83d;--cream:#fffaf0}*{box-sizing:border-box}html{background:#fff7df;min-width:320px}body{color:var(--ink);background:radial-gradient(circle at 10% 0,#ffd84d59,#0000 28rem),radial-gradient(circle at 100% 30%,#6dcd532e,#0000 25rem),#fffaf0;margin:0;font-family:UD Digi Kyokasho NK-R,UDデジタル教科書体 N-R,BIZ UDPGothic,Yu Gothic,sans-serif}button,input{font:inherit}button{-webkit-tap-highlight-color:transparent}.app-shell{min-height:100svh;padding:16px}.site-header{align-items:center;gap:16px;max-width:1040px;margin:0 auto 14px;display:flex}.brand-logo{object-fit:contain;filter:drop-shadow(0 4px 8px #562c0026);width:82px;height:82px}.title-wrap{flex:1}.eyebrow{color:#ad3c2d;letter-spacing:.08em;margin:0 0 2px;font-size:.86rem;font-weight:800}h1{color:#d62c1f;letter-spacing:.03em;margin:0;font-size:clamp(1.65rem,5vw,2.65rem)}.subtitle{color:#5c6872;margin:4px 0 0;font-size:.94rem}.layout{grid-template-columns:230px minmax(0,1fr);align-items:start;gap:18px;max-width:1040px;margin:0 auto;display:grid}.level-panel,.lesson-card{background:#fffffff0;border:3px solid #fff;box-shadow:0 8px 24px #593e141f}.level-panel{border-radius:24px;padding:14px;position:sticky;top:12px}.panel-title{color:#596570;margin:1px 4px 10px;font-size:1rem}.levels{gap:8px;display:grid}.level-button{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border:2px solid #e9e5dc;border-radius:14px;padding:10px 11px;transition:transform .15s,border-color .15s,background .15s}.level-button:hover{border-color:#ffc53d;transform:translateY(-1px)}.level-button.active{background:#fff1a8;border-color:#f3b916;box-shadow:0 3px #dc9d00}.level-number{color:#b23b2d;font-size:.82rem;font-weight:900;display:block}.level-name{margin-top:2px;font-size:.96rem;font-weight:800;display:block}.level-note{color:#65717c;margin-top:2px;font-size:.72rem;display:block}.lesson-card{border-radius:28px;min-height:610px;padding:clamp(16px,4vw,30px);position:relative;overflow:hidden}.lesson-card:before{content:"";opacity:.75;background:#fff1a8;border-radius:50%;width:155px;height:155px;position:absolute;top:-54px;right:-54px}.lesson-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;display:flex;position:relative}.level-badge{color:#327b26;background:#e8f7e2;border-radius:999px;align-items:center;gap:7px;margin:0;padding:7px 13px;font-weight:900;display:inline-flex}.score{color:#16659f;white-space:nowrap;background:#e9f5ff;border-radius:999px;margin:0;padding:7px 12px;font-weight:800}.question{text-align:center;min-height:58px;margin:14px auto 10px;font-size:clamp(1.35rem,4vw,2rem);font-weight:900;line-height:1.45;position:relative}.accent{color:#d93225}.clock-wrap{place-items:center;margin:4px auto 18px;display:grid}.clock{aspect-ratio:1;background:#fffdf7;border:clamp(8px,2vw,13px) solid #3d5363;border-radius:50%;width:min(70vw,300px);position:relative;box-shadow:inset 0 0 0 5px #dcebf4,0 8px #2e4d5f2b}.clock:after{content:"";z-index:10;background:#ff5045;border:4px solid #fff;border-radius:50%;width:20px;height:20px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 1px 4px #00000040}.tick{transform-origin:50% calc(min(35vw,150px) - 13px);background:#a7b7c1;width:2px;height:8px;position:absolute;inset:4px 50% auto}.tick.major{background:#526978;width:4px;height:13px}.clock-number{color:#263d4d;z-index:2;font-size:clamp(1.15rem,5vw,1.85rem);font-weight:900;position:absolute;transform:translate(-50%,-50%)}.hand{transform-origin:50% 100%;z-index:6;border-radius:999px;position:absolute;bottom:50%;left:50%}.hour-hand{width:9px;height:27%;transform:rotate(var(--hour-angle));background:#e4473b;margin-left:-4.5px}.minute-hand{width:6px;height:38%;transform:rotate(var(--minute-angle));background:#2285ca;margin-left:-3px}.hand-key{justify-content:center;gap:18px;margin-top:10px;font-size:.83rem;font-weight:800;display:flex}.key-dot{border-radius:50%;width:11px;height:11px;margin-right:5px;display:inline-block}.answer-form{text-align:center;max-width:540px;margin:0 auto}.time-inputs{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:clamp(14px,4vw,28px);display:flex}.step-field{justify-items:center;gap:5px;display:grid}.field-caption{color:#6b7780;font-size:.78rem;font-weight:900}.stepper-row{justify-content:center;align-items:center;gap:7px;display:flex}.step-button{color:#824c00;cursor:pointer;background:#fff1a8;border:0;border-radius:16px;width:52px;height:56px;font-size:1.8rem;font-weight:900;box-shadow:0 4px #e2b729}.step-button:active{transform:translateY(3px);box-shadow:0 1px #e2b729}.time-field{align-items:center;gap:8px;font-size:clamp(1.2rem,4vw,1.7rem);font-weight:900;display:flex}.time-field input{color:#213547;text-align:center;background:#fff;border:4px solid #9dc9e6;border-radius:18px;outline:none;width:clamp(94px,21vw,122px);height:66px;font-size:clamp(1.35rem,5vw,2rem);font-weight:900;box-shadow:inset 0 2px 4px #21547514}.time-field input:focus{border-color:#2186d9;box-shadow:0 0 0 4px #2186d929}.time-field input::placeholder{color:#a4afb6;font-size:.7em}.answer-form.correct .time-field input{background:#f1fbea;border-color:#61b94c}.answer-form.wrong .time-field input{background:#fff5f4;border-color:#ef7268;animation:.25s linear shake}.half-answer{color:#6540b3;background:#f4efff;border:4px solid #9f82df;border-radius:18px;align-self:end;min-width:135px;padding:9px 15px;font-size:2rem;font-weight:900}.half-answer span{color:#766a88;margin-top:1px;font-size:.72rem;display:block}.quick-steps{gap:8px;display:flex}.quick-steps button{color:#245f85;cursor:pointer;background:#eef9ff;border:2px solid #b7d6ea;border-radius:11px;min-width:66px;padding:6px 10px;font-weight:900}.check-button{color:#fff;cursor:pointer;background:#2186d9;border:0;border-radius:16px;min-width:190px;margin:14px auto 0;padding:13px 22px;font-size:1.08rem;font-weight:900;box-shadow:0 4px #1265a6}.check-button:active{transform:translateY(3px);box-shadow:0 1px #1265a6}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.feedback{text-align:center;min-height:34px;margin:14px 0 0;font-size:1.15rem;font-weight:900}.feedback.ok{color:#3a8c2b}.feedback.no{color:#d1372b}.next-button{color:#633b00;cursor:pointer;background:#ffb81e;border:0;border-radius:16px;min-width:185px;margin:5px auto 0;padding:13px 22px;font-size:1.08rem;font-weight:900;display:block;box-shadow:0 4px #d38d00}.mode-label{color:#fff;background:#7b54c8;border-radius:10px;margin-right:6px;padding:2px 9px;display:inline-block}.relative-note{text-align:center;color:#66717a;margin:-4px auto 12px;font-weight:700}.question ruby{ruby-align:center}.question rt{color:#7653bd;font-size:.48em;font-weight:800}.footer-note{text-align:center;color:#707a81;max-width:1040px;margin:13px auto 0;font-size:.78rem}@keyframes shake{0%,to{transform:translate(0)}33%{transform:translate(-5px)}66%{transform:translate(5px)}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}@media (width<=760px){.app-shell{padding:10px}.site-header{gap:10px}.brand-logo{width:64px;height:64px}.subtitle{display:none}.layout{grid-template-columns:1fr;gap:12px}.level-panel{border-radius:18px;padding:9px;position:static}.panel-title{display:none}.levels{scrollbar-width:thin;gap:7px;padding:1px 2px 6px;display:flex;overflow-x:auto}.level-button{text-align:center;min-width:102px;padding:8px 9px}.level-note{display:none}.lesson-card{border-radius:22px;min-height:0;padding:15px 12px 20px}.question{min-height:48px;margin-top:11px}}@media (width<=390px){.site-header{margin-bottom:7px}.brand-logo{width:55px;height:55px}.eyebrow{display:none}.time-inputs{gap:8px}.time-field{gap:5px}.time-field input{width:88px;height:58px}.step-button{width:47px;height:53px}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}
