:root{--paper:#f8f7f2;--white:#fffefa;--ink:#203d31;--muted:#69776c;--line:#dce2d9;--accent:#285b48;--pale:#eaf1e9;--mark:#f5e9b3;--size:clamp(32px,9.8vw,48px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;-webkit-text-size-adjust:100%}
button,a{touch-action:manipulation}button{font:inherit;cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible{outline:3px solid #78a38c;outline-offset:3px}
.container{max-width:1030px;margin:auto;padding:0 16px}.site-header{background:var(--white);border-bottom:1px solid var(--line)}.header-inner{display:flex;min-height:63px;align-items:center;justify-content:space-between;gap:10px}.brand{font-family:"Yu Mincho",Georgia,serif;font-size:25px;font-weight:800;letter-spacing:.08em;text-decoration:none;color:var(--ink)}.home-link{font-size:12px;text-decoration:none;color:var(--accent);border:1px solid var(--line);border-radius:100px;padding:8px 12px}
main{padding-top:26px;padding-bottom:60px}.kicker{font-weight:800;font-size:11px;letter-spacing:.13em;color:var(--muted)}h1{font-size:clamp(23px,4vw,31px);letter-spacing:.02em;margin:5px 0 3px}p.subtitle{margin:0 0 17px;color:var(--muted);font-size:13px}.layout{display:grid;grid-template-columns:minmax(310px,1fr) minmax(320px,.9fr);gap:14px;align-items:start}.panel{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:18px;min-width:0}.panel h2{font-size:16px;margin:0 0 12px}.board-wrap{display:flex;flex-direction:column;align-items:center}.board{display:grid;gap:2px;border:3px solid var(--ink);padding:2px;background:var(--ink);border-radius:4px;width:max-content;max-width:100%;touch-action:manipulation}.cell{position:relative;width:var(--size);height:var(--size);min-width:0;padding:0;border:0;background:white;color:var(--ink);font-size:clamp(17px,5.4vw,24px);font-weight:750;display:flex;justify-content:center;align-items:center}.cell.block{background:#30483c;pointer-events:none}.cell.path{background:var(--pale)}.cell.marked{background:var(--mark)}.cell.path.marked{background:#f6e39a}.cell.focus{box-shadow:inset 0 0 0 3px var(--accent);z-index:1}.cell.bad{color:#b92e2e;box-shadow:inset 0 0 0 2px #cc5b51}.cell-number{position:absolute;top:0px;left:3px;font-size:9px;line-height:1.3;font-weight:600;color:#657067}.cell-symbol{position:absolute;right:2px;top:0;font-size:9px;line-height:1.2;color:#7b6020;font-weight:900}.cell-val{display:block;padding-top:7px}.board-note{margin:9px 0 0;font-size:11px;color:var(--muted);text-align:center}
.progress{display:flex;align-items:center;gap:9px;margin-top:12px;font-size:12px;color:var(--muted)}.progress-rail{height:6px;flex:1;background:#e4e9e2;border-radius:10px;overflow:hidden}.progress-fill{height:100%;width:0;background:var(--accent);transition:width .12s}
.clue-section{border-top:1px solid var(--line);padding-top:12px;margin-top:12px}.mini-title{color:var(--muted);font-size:11px;font-weight:750;letter-spacing:.07em;margin:0 0 7px}.clue-list{display:grid;grid-template-columns:1fr 1fr;gap:7px}.clue-tab{border:1px solid var(--line);border-radius:10px;padding:9px 10px;background:#fff;text-align:left;min-width:0;color:var(--ink);font-size:12px;line-height:1.45;min-height:69px}.clue-tab strong{font-size:12px;display:block;color:var(--accent);margin-bottom:3px}.clue-tab.current{border:2px solid var(--accent);background:#f0f6f0;padding:8px 9px}.clue-tab:disabled{opacity:.45}.tip{font-size:11px;color:var(--muted);margin:8px 0 0}
.tray-header{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:11px}.tray-header h2{margin:0}.tray-count{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.tile-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.tile{width:100%;min-height:43px;border:1px solid #bccbc0;border-bottom:3px solid #aebeb0;background:#fff;border-radius:8px;font-size:20px;font-weight:750;color:var(--ink);line-height:1}.tile.used{background:#f1f2ef;border-color:#e0e5df;color:#b0b9b2;box-shadow:none}.tile:active:not(:disabled){transform:translateY(1px)}
.tools{display:flex;flex-wrap:wrap;gap:7px;margin:14px 0 0}.tool-btn{background:#fff;border:1px solid var(--line);border-radius:9px;padding:9px 12px;color:var(--ink);font-size:12px;font-weight:700}.tool-btn.main{background:var(--accent);border-color:var(--accent);color:white}.notice{min-height:23px;font-size:12px;color:var(--muted);margin:10px 0 0}.notice.ok{color:#237144}.notice.err{color:#ad4837}
.finale{margin-top:14px}.finale p{font-size:13px;color:var(--muted);margin:0 0 13px}.finale h2{margin-bottom:6px}.finale-clue{font-size:16px;font-weight:750;color:var(--ink);margin:9px 0 14px}.picked{display:grid;grid-template-columns:repeat(var(--final-length,4),minmax(0,1fr));gap:7px;max-width:330px;margin:10px auto 14px}.slot{height:51px;border:1px solid #aebdb1;background:#f2f5f0;border-radius:8px;font-size:23px;font-weight:800;color:var(--ink)}.slot.empty{color:#a3aea6}.final-tiles{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}.final-tile{display:flex;flex-direction:column;align-items:center;justify-content:center;width:55px;height:64px;border:1px solid #9fb3a6;border-radius:10px;background:#fff;color:var(--ink);font-size:22px;font-weight:800}.final-tile small{font-size:10px;font-weight:600;line-height:1;color:var(--muted)}.final-tile:disabled{opacity:.3}.final-submit{width:100%;padding:12px 16px;margin-top:14px;border-radius:11px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-weight:800}.final-submit:disabled{background:#c5d3c9;border-color:#c5d3c9}.final-result{padding:9px 12px;margin:10px 0 0;border-radius:9px;background:#eff5ec;font-size:13px}.final-result.error{background:#f8f0eb;color:#a34437}
.details{margin-top:13px;border-top:1px solid var(--line);padding-top:10px}.details summary{font-size:13px;color:var(--accent);cursor:pointer;font-weight:750}.all-clues{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:9px}.all-clues h3{font-size:12px;margin:0 0 8px}.all-clues button{display:block;width:100%;border:0;border-bottom:1px solid var(--line);padding:9px 5px;background:none;color:var(--ink);text-align:left;font-size:12px}#bankToggle,#bankOpen{display:none}.footer-note{color:var(--muted);font-size:12px;margin-top:16px}.footmark{font-size:18px;margin-right:5px;color:var(--accent)}
@media(max-width:780px){
:root{--size:clamp(28px,8.5vw,38px)}
main{padding-top:11px;padding-bottom:285px}.layout{display:block}.layout>div{display:contents}
.site-header .header-inner{min-height:50px}.site-header .brand{font-size:22px}
.kicker{font-size:10px}h1{font-size:22px;margin:1px 0}.subtitle{font-size:12px;line-height:1.4;margin:0 0 9px}
.panel{padding:10px;border-radius:12px}.layout>.panel:first-child{display:flex;flex-direction:column;gap:0}
.clue-section{order:0;border-top:0;padding-top:0;margin-top:0;margin-bottom:6px}
.clue-tab{min-height:54px;padding:5px 7px;font-size:11px}.clue-tab strong{font-size:11px;margin-bottom:1px}.clue-tab.current{padding:4px 6px}
.mini-title{margin-bottom:3px}.clue-list{gap:5px}.tip{display:none}
.board-wrap{order:1}.board-note{order:2;margin:4px 0 0;font-size:10px;line-height:1.35}.progress{order:3;margin:4px 0 0;font-size:11px}
.bank{position:fixed;z-index:20;left:0;right:0;bottom:0;width:100%;margin:0;border-radius:15px 15px 0 0;padding:9px 13px calc(9px + env(safe-area-inset-bottom));box-shadow:0 -8px 24px #243e3024;background:var(--white);max-height:46vh;overflow:auto}
.bank .tray-header{margin-bottom:6px}.bank .tray-header h2{font-size:13px}.tile-grid{gap:4px}.tile{min-height:36px;font-size:19px;border-radius:6px}
.tools{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:3px;margin-top:8px}.tool-btn{font-size:10px;padding:6px 0;white-space:nowrap}

.bank.is-hidden{display:none}.bank #bankToggle{display:inline-block;font-size:10px;border:0;border-bottom:1px solid var(--line);background:none;color:var(--muted);padding:2px 4px}
#bankOpen:not([hidden]){display:block;position:fixed;bottom:12px;right:13px;z-index:21;background:var(--accent);border:0;border-radius:99px;padding:11px 17px;color:#fff;font-size:13px;font-weight:800;box-shadow:0 4px 14px #233c3355}
.notice{min-height:0;margin:6px 0 0;font-size:11px}.notice:empty{display:none}.details{display:none}
.finale{margin-top:10px}.final-result{margin-bottom:5px}
}
@media(max-width:355px){:root{--size:9.2vw}.container{padding:0 10px}.panel{padding:12px}.tile{min-height:39px;font-size:18px}.tile-grid{gap:4px}}
@media(prefers-reduced-motion:reduce){*,*::after,*::before{transition:none!important;scroll-behavior:auto!important}}

/* v1.5: final answer celebration; entirely self-contained */
.win-overlay[hidden]{display:none!important}
.win-overlay{position:fixed;inset:0;z-index:90;background:rgba(20,38,29,.56);display:grid;place-items:center;padding:16px;overflow:auto;overscroll-behavior:contain;animation:win-shade .25s ease-out both}
body.win-open{overflow:hidden}
.win-card{position:relative;width:min(100%,420px);max-height:min(94dvh,750px);overflow:auto;background:#fffdf8;border:1px solid #d2d8cd;border-radius:21px;padding:19px 23px 24px;text-align:center;box-shadow:0 25px 65px #15291b42;color:var(--ink);animation:win-rise .4s cubic-bezier(.2,.8,.2,1) both}
.win-close{position:absolute;top:9px;right:12px;z-index:3;width:38px;height:38px;border:0;border-radius:50%;background:#f1f3ed;color:#354b3d;font-size:23px;line-height:1}
.win-kicker{font-size:10px;letter-spacing:.18em;font-weight:750;color:#607663;margin:0 0 5px}
.win-scene{width:min(290px,100%);height:109px;margin:0 auto 4px;overflow:hidden}
.win-scene svg{display:block;width:100%;height:100%;overflow:visible}
.win-road{fill:none;stroke:#7a9982;stroke-width:3;stroke-dasharray:245;stroke-dashoffset:245;stroke-linecap:round;animation:win-draw 1.3s .2s ease-out forwards}
.win-grass{fill:none;stroke:#899f8a;stroke-width:2;stroke-linecap:round}
.win-post{fill:none;stroke:#263f32;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;transform-origin:232px 95px;animation:win-post .58s 1.05s cubic-bezier(.18,1.45,.5,1) both}
.win-spark{fill:#c4aa60;animation:win-twinkle 1.3s ease-in-out infinite alternate}
.win-spark.two{animation-delay:.4s}
.win-stamp{display:inline-block;border:2px solid #638d70;color:#335e43;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.12em;padding:4px 16px;margin:0 0 8px;transform:rotate(-5deg);animation:win-stamp .55s 1.0s cubic-bezier(.25,1.4,.3,1) both}
.win-card h2{font-family:"Yu Mincho", "Hiragino Mincho ProN",Georgia,serif;font-size:clamp(29px,7vw,39px);line-height:1.23;margin:3px 0 12px;letter-spacing:.04em}
.win-card h2 small{font-family:inherit;display:block;font-size:16px;font-weight:700;margin-bottom:6px}
.win-letters{display:flex;justify-content:center;gap:7px;margin:9px 0 13px}
.win-letter{display:grid;place-items:center;width:clamp(48px,14vw,63px);height:clamp(52px,15vw,66px);background:#f2f5ec;border:1px solid #bccfba;border-bottom:3px solid #91a891;border-radius:10px;font-size:27px;font-weight:800;opacity:0;animation:win-letter .43s both}
.win-message{color:#5a685d;font-size:13px;line-height:1.8;margin:6px auto 20px}
.win-actions{display:flex;gap:8px;justify-content:center}
.win-actions>*{flex:1;display:grid;place-items:center;min-height:45px;padding:10px 6px;border:1px solid #bacabc;border-radius:12px;font-size:12px;font-weight:800;text-decoration:none;color:var(--ink);background:#fff}
.win-actions .win-next{background:var(--accent);border-color:var(--accent);color:white}
.win-actions .win-next[hidden]{display:none}
.win-actions .win-next{font-size:15px;min-height:48px}
.win-links{display:flex;align-items:center;justify-content:center;gap:22px;margin-top:14px}
.win-links a,.win-links button{color:#566d5e;text-decoration:underline;text-underline-offset:4px;background:none;border:0;padding:7px 2px;font-size:12px;cursor:pointer}
.win-links a:hover,.win-links button:hover{color:#244432}
.win-note{font-size:10px;color:#8a988b;margin-top:13px}
@keyframes win-shade{from{opacity:0}to{opacity:1}}
@keyframes win-rise{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}
@keyframes win-draw{to{stroke-dashoffset:0}}
@keyframes win-post{from{opacity:0;transform:translateY(-20px) rotate(-10deg)}to{opacity:1;transform:none}}
@keyframes win-twinkle{from{opacity:.25;transform:scale(.8)}to{opacity:1;transform:scale(1.05)}}
@keyframes win-stamp{from{opacity:0;transform:rotate(-16deg) scale(1.5)}to{opacity:1;transform:rotate(-5deg) scale(1)}}
@keyframes win-letter{from{opacity:0;transform:translateY(15px) rotate(-6deg)}to{opacity:1;transform:none}}
@media(max-width:400px){.win-card{padding:15px 15px 18px}.win-scene{height:97px}.win-message{font-size:12px}}
@media(prefers-reduced-motion:reduce){.win-overlay,.win-card,.win-road,.win-post,.win-stamp,.win-letter,.win-spark{animation:none!important}.win-road{stroke-dashoffset:0}.win-letter{opacity:1}}