:root{color:#eaf0f7;font-synthesis:none;background:#101c2b;font-family:Yu Gothic,Hiragino Kaku Gothic ProN,Meiryo,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:inherit}fieldset{border:0;min-width:0;margin:0;padding:0}button{border:0}figure,p,h1,h2,h3{margin:0}.site{--accent:#efac73;--deep:#974515;--tint:#fff2e5;--muted:#a9bbcc;background:radial-gradient(at 0 35%,#263444 0,#0000 55%),#101c2b;min-height:100vh;padding:0 5vw}.site[data-season=spring]{--accent:#ffa9c6;--deep:#9b315c;--tint:#fff0f5}.site[data-season=summer]{--accent:#71d5e9;--deep:#07637f;--tint:#e9faff}.site[data-season=winter]{--accent:#bed2ff;--deep:#3c5595;--tint:#eef2ff}.masthead{border-bottom:1px solid #435062;justify-content:space-between;align-items:center;gap:20px;max-width:1240px;min-height:92px;margin:auto;display:flex}.brand{letter-spacing:.1em;align-items:center;gap:14px;font-family:Yu Mincho,serif;font-size:1.2rem;text-decoration:none;display:flex}.brand-mark{border:1px solid var(--accent);width:36px;height:36px;color:var(--accent);place-items:center;display:grid}.brand-sub,.edition{letter-spacing:.09em;color:#b4c3d3;font-family:inherit;font-size:.875rem}.brand-sub{margin-left:12px}main{max-width:1240px;margin:auto}.season-nav{padding:28px 0 38px}.season-options{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.season-option{cursor:pointer;background:#172434;border:1px solid #526070;align-items:center;gap:16px;min-height:80px;padding:12px 24px;transition:background .2s;display:flex;position:relative}.season-option strong{font-family:Yu Mincho,serif;font-size:2rem;font-weight:500}.season-option input{opacity:0;position:absolute}.season-option.active{border-color:var(--accent);background:var(--tint);color:var(--deep);box-shadow:inset 0 -3px var(--accent)}.season-option:hover{border-color:var(--accent)}.season-number{opacity:.7;font-size:.875rem}.season-en{letter-spacing:.12em;margin-left:auto;font-size:.875rem}.atelier{grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);align-items:start;gap:clamp(28px,5vw,72px);display:grid}.selection{padding:10px 0}.eyebrow{letter-spacing:.18em;color:var(--accent);font-size:.875rem}h1{letter-spacing:.025em;margin:12px 0 16px;font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-size:clamp(1.8rem,3.2vw,2.75rem);font-weight:500;line-height:1.55}.intro{color:#c5d1df;max-width:35em;font-size:1rem;line-height:1.95}.controls{margin-top:28px}legend{margin-bottom:12px;font-size:.9375rem}.mode-options{grid-template-columns:1fr 1fr;gap:10px;display:grid}.mode{cursor:pointer;border:1px solid #546174;border-radius:4px;align-items:flex-start;gap:8px;padding:15px 12px;display:flex}.mode.active{border-color:var(--accent);background:#243244}.mode input{accent-color:var(--accent);margin:5px 0 0}.mode strong{font-size:.9375rem;line-height:1.6;display:block}.mode small{color:#b4c3d3;margin-top:5px;font-size:.875rem;line-height:1.6;display:block}.mode-note{color:#c5d1df;min-height:3.6em;margin:13px 0 16px;font-size:.875rem;line-height:1.8}.draw-button{background:var(--accent);color:#122032;border-radius:4px;justify-content:space-between;align-items:center;gap:12px;width:100%;min-height:60px;padding:19px 22px;font-size:1.0625rem;font-weight:700;display:flex}.draw-button:hover:not(:disabled){filter:brightness(1.08)}.draw-button span{font-size:1.4rem}.under-button{color:#a9bbcc;text-align:center;margin:11px 0 20px;font-size:.875rem;line-height:1.6}.artwork{border-top:1px solid #435062;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;padding-top:20px;display:grid}.artwork img{object-fit:cover;border-radius:3px;width:100%;height:156px}.artwork figcaption{writing-mode:vertical-rl;letter-spacing:.17em;color:#b4c3d3;max-height:170px;font-family:Yu Mincho,serif;font-size:.875rem;line-height:1.8}.result-panel{color:#203147;border-top:4px solid var(--accent);background:#f6f8fc;flex-direction:column;min-height:620px;padding:30px clamp(20px,3vw,38px) 22px;display:flex;position:relative;box-shadow:0 18px 65px #0003}.paper-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.paper-top .eyebrow{color:#5d6e83;letter-spacing:.13em;font-size:.8rem}.paper-stamp{border:1px solid var(--deep);color:var(--deep);padding:5px 9px;font-family:Yu Mincho,serif;font-size:1.1rem;transform:rotate(6deg)}.result-panel h2{margin:24px 0 12px;font-family:Yu Mincho,serif;font-size:1.55rem;font-weight:500;line-height:1.65}.result-label{color:#526379;margin-bottom:14px;font-size:.875rem;line-height:1.7}.prompt{resize:vertical;color:#203147;background:#fff;border:1px solid #d2dae4;border-radius:3px;width:100%;min-height:330px;padding:16px;font-size:1rem;line-height:1.9;display:block}.result-actions{gap:10px;margin-top:18px;display:flex}.result-actions button{border-radius:3px;min-height:48px;padding:13px 18px;font-size:.9375rem}.copy-button{color:#fff;background:#21344c;flex:1}.again-button{color:#26394f;background:0 0;border:1px solid #b4c1d1!important}.copy-status{color:#55677d;min-height:3.4em;margin-top:11px;font-size:.875rem;line-height:1.7}.paper-bottom{letter-spacing:.13em;color:#65778d;border-top:1px solid #ccd5e1;justify-content:space-between;margin-top:auto;padding-top:15px;font-size:.75rem;display:flex}.empty-state{text-align:center;margin:auto;padding:35px 0 65px}.empty-state>span{color:var(--deep);margin-bottom:22px;font-size:3.5rem;display:block}.empty-state p{font-family:Yu Mincho,serif;font-size:1.2rem;line-height:2}.empty-state small{color:#65758a;margin-top:20px;font-size:.875rem;line-height:1.9;display:block}.error{color:#9e2531;background:#fff0f1;border:1px solid #eac1c5;margin-bottom:15px;padding:12px;font-size:.9375rem;line-height:1.7}.selection-note,.special-note{background:var(--tint);color:var(--deep);margin-bottom:14px;padding:12px;font-size:.875rem;line-height:1.8}.special{animation:.6s ease-out arrive}@keyframes arrive{0%{box-shadow:0 0 0 5px var(--accent)}to{box-shadow:0 18px 65px #0003}}.guide{border-top:1px solid #435062;margin-top:35px;padding:50px 0 35px}.guide h2{font-family:Yu Mincho,serif;font-size:1.35rem;font-weight:500}.guide ol{grid-template-columns:repeat(3,1fr);gap:30px;margin:25px 0;padding:0;list-style:none;display:grid}.guide li{gap:16px;display:flex}.guide li>span{color:var(--accent);font-size:1.1rem}.guide h3{margin-bottom:8px;font-size:.9375rem;line-height:1.6}.guide p{color:#b4c3d3;font-size:.875rem;line-height:1.85}details{border-top:1px solid #435062;padding-top:20px}summary{cursor:pointer;min-height:44px;padding:8px 0;font-size:.9375rem}details p{max-width:75em;margin:12px 0}footer{color:#a9bbcc;border-top:1px solid #435062;align-items:center;gap:24px;max-width:1240px;margin:auto;padding:28px 0;font-size:.875rem;line-height:1.8;display:flex}footer a{white-space:nowrap;margin-left:auto}.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}.skip-link{color:#122032;z-index:50;background:#fff;padding:15px;position:fixed;top:-80px;left:15px}.skip-link:focus{top:15px}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.season-option:focus-within{outline:3px solid var(--accent);outline-offset:4px}.result-panel :focus-visible{outline-color:var(--deep)}@media (max-width:1000px){.brand-sub{display:none}.season-option{gap:10px;padding:12px 18px}.season-en{font-size:.75rem}.mode-options{grid-template-columns:1fr}.mode small{margin-top:0}.mode-note{min-height:0}.artwork img{height:130px}.result-panel{min-height:690px}}@media (max-width:720px){.site{padding:0 20px}.masthead{min-height:76px}.brand{gap:9px;font-size:1rem}.edition{text-align:right;max-width:7em;font-size:.75rem}.season-nav{padding:20px 0 26px}.season-options{gap:8px}.season-option{flex-direction:column;gap:3px;min-height:83px;padding:10px 5px}.season-number{display:none}.season-en{letter-spacing:.08em;margin:0;font-size:.65rem}.season-option strong{font-size:1.6rem}.atelier{grid-template-columns:1fr;gap:24px}.selection{padding:0}.intro{line-height:1.85}h1{margin-top:9px;font-size:1.9rem}.controls{margin-top:24px}.mode-options{grid-template-columns:1fr 1fr}.mode{padding:12px 8px}.mode strong,.mode small{font-size:.875rem}.artwork{display:none}.result-panel{min-height:440px;padding:23px 20px 20px}.result-panel h2{margin-top:18px;font-size:1.35rem}.prompt{min-height:340px}.empty-state{padding:30px 0 45px}.guide{margin-top:32px;padding-top:28px}.guide ol{grid-template-columns:1fr;gap:22px}footer{flex-wrap:wrap;gap:12px}footer p{order:3;width:100%}footer a{margin-left:auto}}@media (max-width:360px){.site{padding:0 14px}.mode-options{grid-template-columns:1fr}.result-actions{flex-direction:column}.season-en{display:none}.season-option{min-height:62px}.brand-mark{display:none}}@media (max-width:720px){.season-en{font-size:.75rem}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.site{isolation:isolate;background:0 0;padding-inline:clamp(20px,6vw,120px);position:relative}.season-world{z-index:-1;pointer-events:none;background:#172b3b;position:fixed;inset:0;overflow:hidden}.season-landscape{background-image:url(/season-landscapes.webp);background-position:0 100%;background-repeat:no-repeat;background-size:200% 200%;width:max(100vw,100vh);height:max(100vw,100vh);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.site[data-season=spring] .season-landscape{background-position:0 0}.site[data-season=summer] .season-landscape{background-position:100% 0}.site[data-season=autumn] .season-landscape{background-position:0 100%}.site[data-season=winter] .season-landscape{background-position:100% 100%}.landscape-shade{background:linear-gradient(#09172b9c 0%,#0a19332b 28%,#08172c33 65%,#061225a6 100%);position:absolute;inset:0}.masthead,main,footer{max-width:1160px}.masthead{text-shadow:0 2px 10px #071629;border-color:#ffffff40}.brand-sub,.edition{color:#edf3fb}.brand-mark{background:#0d1e32a6}.masthead{flex-wrap:wrap;padding-block:16px}.official-return{color:#f0f5fc;text-underline-offset:4px;background:#101e34e6;border:1px solid #e4edf566;border-radius:6px;align-items:center;min-height:44px;padding:10px 14px;font-size:.875rem;line-height:1.6;text-decoration:underline;display:inline-flex}.official-return:hover{background:#294157}.footer-links{flex-wrap:wrap;align-items:center;gap:8px 24px;margin-left:auto;display:flex}.footer-links a{white-space:normal;align-items:center;min-height:44px;margin-left:0;display:inline-flex}.season-nav{padding-top:25px;padding-bottom:36px}.season-option{background:#101f35cf;border-color:#e5effb66;border-radius:6px;box-shadow:0 5px 20px #0510211a}.season-option.active{background:var(--tint);box-shadow:inset 0 -3px var(--accent), 0 8px 28px #06152f29}.atelier{gap:clamp(24px,4vw,54px)}.selection{background:linear-gradient(120deg,#101e34e8,#13253bcf);border:1px solid #e4edf533;border-radius:10px;padding:clamp(20px,2.5vw,32px);box-shadow:0 18px 60px #05111e24}.selection h1{text-shadow:0 2px 16px #0b1727;font-size:clamp(1.8rem,2.8vw,2.5rem)}.selection .intro,.selection .mode-note{color:#e2eaf3}.mode-options{grid-template-columns:1fr}.mode{background:#0c1a2c66;border-color:#bdcddd66}.mode.active{background:#294157b8}.mode small{color:#d0deed;margin-top:2px}.mode-note{min-height:0}.under-button{color:#c8d8e8;margin-bottom:0}.result-panel{background:#f8fafced;border-radius:6px 6px 12px 12px;min-height:585px;box-shadow:0 22px 65px #07152945}.prompt{background:#fff}.guide{background:#101e34e6;border:1px solid #e4edf533;border-radius:10px;margin-top:58px;margin-bottom:24px;padding:28px 32px}.guide p{color:#d0ddeb}.guide details{border-color:#c1d5e044}footer{color:#f0f5fc;text-shadow:0 2px 10px #071629;border-color:#e4edf54d;padding-bottom:35px}@media (max-width:1000px){.season-option{padding-inline:12px}.selection h1{font-size:1.9rem}}@media (max-width:720px){.site{padding-inline:20px}.season-nav{padding-bottom:24px}.season-option{padding-inline:5px}.selection{padding:22px 18px}.selection h1{font-size:1.75rem}.atelier{gap:28px}.result-panel{min-height:420px}.guide{margin-top:36px;padding:24px 20px}.landscape-shade{background:linear-gradient(#09172b80,#0b19352b 40%,#08142780)}}@media (max-width:360px){.site{padding-inline:14px}.selection{padding-inline:16px}}