@font-face{font-family:'Noto Sans JP';src:url('./fonts/noto-sans-jp-japanese-400-normal.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Noto Sans JP';src:url('./fonts/noto-sans-jp-japanese-700-normal.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:'Noto Serif JP';src:url('./fonts/noto-serif-jp-japanese-400-normal.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Noto Serif JP';src:url('./fonts/noto-serif-jp-japanese-500-normal.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Noto Serif JP';src:url('./fonts/noto-serif-jp-japanese-600-normal.woff2') format('woff2');font-weight:600;font-display:swap}
:root{--ink:#263d42;--muted:#70858a;--paper:#f7f8f5;--line:#dbe4e2;--orange:#cd8050;--blue:#447d85;--map:#e5efee}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,'Noto Sans JP',-apple-system,BlinkMacSystemFont,'Hiragino Kaku Gothic ProN',Meiryo,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}a{color:inherit}.shell{max-width:1760px;margin:auto;padding:0 40px}.site-header{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:15px;font-weight:700;letter-spacing:.16em}.brand-mark{width:33px;height:33px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:7px;font:600 21px Georgia,serif;letter-spacing:0}.brand small{font-size:8px;display:block;letter-spacing:.35em;font-weight:500;margin-top:2px;color:var(--muted)}.header-note{font-family:'Noto Serif JP','Yu Mincho',serif;font-size:11px;letter-spacing:.16em;color:var(--muted)}
.main-grid{display:grid;grid-template-columns:minmax(280px,340px) minmax(0,1fr);grid-template-rows:auto auto;column-gap:42px}.intro{padding:70px 0 44px;grid-column:1;grid-row:1}.eyebrow{font-size:10px;letter-spacing:.23em;font-weight:700;color:var(--blue);margin:0 0 23px}.eyebrow-line{display:inline-block;width:22px;height:1px;background:var(--blue);vertical-align:middle;margin-right:11px}.intro h1{font-family:'Noto Serif JP','Yu Mincho',serif;font-size:clamp(29px,2.45vw,39px);font-weight:500;letter-spacing:.04em;line-height:1.7;margin:0}.intro h1 em{font-style:normal;color:var(--blue)}.intro-copy{font-size:12px;line-height:2.2;color:#5a7278;margin:25px 0 31px;letter-spacing:.015em}.divider{width:100%;height:1px;background:var(--line);margin-bottom:27px}.filter-heading{display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:700;letter-spacing:.08em;margin-bottom:13px}.filter-heading span:last-child{color:var(--muted);font-size:10px;font-weight:500;letter-spacing:0}.layers{display:grid;gap:10px}.layer{border:1px solid var(--line);background:#fff;min-height:64px;border-radius:12px;padding:11px 14px;display:flex;gap:12px;align-items:center;cursor:pointer;transition:border-color .2s,background .2s,opacity .2s}.layer:hover{border-color:#acc4c3}.layer input{position:absolute;opacity:0;width:1px;height:1px}.layer:has(input:focus-visible){outline:3px solid #a8bec8;outline-offset:2px}.check{width:20px;height:20px;flex:none;border:1.5px solid currentColor;border-radius:6px;display:grid;place-items:center;color:white;font-size:12px;background:var(--orange)}.layer-yukari .check{background:var(--blue)}.layer:has(input:not(:checked)){opacity:.56;background:#f7f8f7}.layer:has(input:not(:checked)) .check{background:transparent;color:transparent}.layer-kago:has(input:not(:checked)) .check{border-color:var(--orange)}.layer-yukari:has(input:not(:checked)) .check{border-color:var(--blue)}.layer-text{display:grid;gap:3px}.layer-text strong{font-family:'Noto Serif JP','Yu Mincho',serif;font-weight:600;font-size:14px}.layer-text small{font-size:9px;color:var(--muted);letter-spacing:.13em}.layer-number{margin-left:auto;color:var(--muted);font-size:11px}.map-help{color:#8a9da0;font-size:11px;margin:20px 0 0}
.experiment-note{border-left:2px solid #a7c6c3;padding:1px 0 2px 14px;margin:-8px 0 29px}.experiment-tag{display:block;font-size:9px;font-weight:700;letter-spacing:.17em;color:var(--blue)}.experiment-note p{font-size:11px;line-height:1.8;color:#5a7278;margin:8px 0 7px}.experiment-note a{font-size:11px;font-weight:700;color:var(--blue);text-decoration:underline;text-underline-offset:3px}.experiment-note a:hover{color:var(--ink)}.experiment-note a:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.map-section{min-width:0;grid-column:2;grid-row:1;padding:40px 0 35px}.map-topline,.map-bottomline{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:.14em;font-weight:700;color:var(--muted);height:30px}.map-topline span:last-child,.map-bottomline span:last-child{font-weight:500;letter-spacing:.03em}.live-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--orange);margin-right:8px}.map-wrap{position:relative;height:min(620px,67vh);min-height:480px;overflow:hidden;background:var(--map);border:1px solid #d1e0df;border-radius:17px;box-shadow:0 12px 32px #29494e0a;touch-action:none}.map-wrap svg{width:100%;height:100%;display:block;cursor:grab}.map-wrap svg.is-dragging{cursor:grabbing}.land-shape{fill:#f3f6f0;stroke:#c5d3cf;stroke-width:1.35;vector-effect:non-scaling-stroke}.island-shape{fill:#f3f6f0;stroke:#c5d3cf;stroke-width:1;vector-effect:non-scaling-stroke}.region-label{fill:#9bb1b4;font-size:13px;font-weight:700;letter-spacing:.24em;pointer-events:none}.sea-label{fill:#a9c0c2;font-size:14px;letter-spacing:.28em;pointer-events:none}.marker{cursor:pointer;outline:none}.marker .halo{fill:#fff;opacity:.9}.marker .dot{stroke:#fff;stroke-width:2;vector-effect:non-scaling-stroke}.marker.kago .dot{fill:var(--orange)}.marker.yukari .dot{fill:var(--blue)}.marker .focus-ring{fill:none;stroke:var(--ink);stroke-width:2;vector-effect:non-scaling-stroke;opacity:0}.marker.active .focus-ring,.marker:focus-visible .focus-ring{opacity:1}.marker:hover .halo{opacity:1}.marker:hover .dot{filter:brightness(.92)}.map-controls{position:absolute;right:18px;top:18px;display:grid;gap:1px;border:1px solid #d6e2df;border-radius:10px;overflow:hidden;box-shadow:0 4px 13px #284b4a16}.map-controls button{width:39px;height:39px;background:#fff;border:0;color:var(--ink);font-size:21px;line-height:1}.map-controls button:hover{background:#f0f5f3}.map-controls button+button{border-top:1px solid var(--line)}.map-caption{position:absolute;left:18px;bottom:18px;background:#fffdf9de;border-radius:6px;padding:8px 11px;color:#637d80;font-size:10px;pointer-events:none}.place-detail{position:absolute;left:18px;top:18px;width:min(290px,calc(100% - 92px));background:#fff;border-radius:13px;padding:18px 19px 16px;box-shadow:0 12px 35px #26424b24;touch-action:auto}.place-detail[hidden]{display:none}.detail-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.detail-series{font-size:10px;font-weight:700;letter-spacing:.1em}.detail-series.kago{color:var(--orange)}.detail-series.yukari{color:var(--blue)}.close-detail{border:0;background:#f2f5f3;color:#526e72;width:25px;height:25px;border-radius:50%;font-size:17px;line-height:1}.detail-name{font-family:'Noto Serif JP','Yu Mincho',serif;font-size:19px;font-weight:600;margin:0 0 7px}.detail-area{color:#899b9e;font-size:10px;letter-spacing:.08em;margin:0 0 13px}.detail-description{font-size:12px;line-height:1.8;color:#536d73;margin:0 0 13px}.detail-source{font-size:10px;color:var(--blue);text-decoration:underline;text-underline-offset:3px}.map-bottomline{height:32px}
.detail-video{display:flex;align-items:center;justify-content:center;min-height:42px;margin:2px 0 10px;border-radius:8px;background:var(--orange);color:#fff;font-size:12px;font-weight:700;text-decoration:none}.detail-video:hover{background:#b66d41}.detail-video:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.detail-marker{margin:-5px 0 12px;color:var(--muted);font-size:10px;line-height:1.6}
.places-section{grid-column:1/-1;padding:15px 0 70px;border-top:1px solid var(--line)}.places-title{display:flex;justify-content:space-between;align-items:end;margin:17px 0 23px}.places-title .eyebrow{margin-bottom:4px}.places-title h2{font:500 27px 'Noto Serif JP','Yu Mincho',serif;margin:0}.places-title>span{font-size:10px;color:var(--muted)}.place-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.place-card{border:1px solid var(--line);background:#fff;border-radius:11px;min-height:100px;text-align:left;padding:17px 17px 14px;display:flex;flex-direction:column;justify-content:space-between;transition:box-shadow .2s,border-color .2s,transform .2s}.place-card:hover,.place-card:focus-visible{border-color:#9fb9b7;box-shadow:0 5px 15px #29494e12;transform:translateY(-2px)}.place-card.active{border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.place-card-top{display:flex;gap:7px;align-items:center;color:var(--muted);font-size:10px;letter-spacing:.05em}.card-dot{width:7px;height:7px;border-radius:50%;background:var(--orange)}.place-card.yukari .card-dot{background:var(--blue)}.card-series{margin-left:auto;color:var(--orange)}.place-card.yukari .card-series{color:var(--blue)}.card-name{font:600 16px 'Noto Serif JP','Yu Mincho',serif;margin-top:13px}.sources{margin:21px 0 0;max-width:780px;color:#83979a;font-size:10px;line-height:1.8}.footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;padding:22px 0 32px;color:#879a9e;font-size:9px;letter-spacing:.2em}.footer span:last-child{font-family:'Noto Serif JP','Yu Mincho',serif;letter-spacing:.05em}
@media(max-width:1000px){.shell{padding:0 24px}.main-grid{grid-template-columns:280px minmax(0,1fr);gap:25px}.intro{padding-top:50px}.map-section{padding-top:23px}.map-wrap{height:550px}.place-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:730px){.shell{padding:0 16px}.site-header{height:67px}.header-note{display:none}.main-grid{display:flex;flex-direction:column;gap:0}.intro{padding:31px 0 18px}.eyebrow{margin-bottom:8px;font-size:9px}.intro h1{font-size:27px;line-height:1.55}.intro h1 br{display:none}.intro h1 em{display:block}.intro-copy{font-size:11px;margin:8px 0 17px;line-height:1.8}.intro-copy br{display:none}.divider,.filter-heading,.map-help{display:none}.layers{grid-template-columns:1fr 1fr;gap:8px}.layer{min-height:52px;padding:7px 9px;gap:8px;border-radius:10px}.check{width:17px;height:17px;font-size:10px}.layer-text strong{font-size:11px}.layer-text small{font-size:7px;letter-spacing:.03em}.layer-number{display:none}.map-section{padding:0 0 20px}.map-topline{height:27px;font-size:9px}.map-wrap{height:min(60vh,540px);min-height:355px;border-radius:12px}.map-caption{font-size:9px;left:9px;bottom:9px;padding:6px 8px}.map-controls{top:10px;right:10px}.map-controls button{width:34px;height:34px}.place-detail{left:9px;top:9px;width:min(245px,calc(100% - 58px));padding:13px 14px}.detail-head{margin-bottom:7px}.detail-name{font-size:16px}.detail-description{font-size:11px;margin-bottom:7px}.map-bottomline{font-size:9px}.map-bottomline span:last-child{max-width:185px;text-align:right}.places-section{padding:9px 0 37px}.places-title{margin:12px 0 12px}.places-title h2{font-size:21px}.place-list{grid-template-columns:1fr 1fr;gap:7px}.place-card{min-height:87px;padding:11px}.card-name{font-size:13px;margin-top:8px}.place-card-top{font-size:8px}.sources{font-size:9px}.footer{padding:17px 0 24px}}
@media(max-width:730px){.experiment-note{margin:-4px 0 16px;padding-left:11px}.experiment-note p{margin:5px 0 3px;font-size:10px}.experiment-note p br{display:none}.experiment-note a{font-size:10px}}
@media(max-width:370px){.place-list{grid-template-columns:1fr}.layer-text small{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
.mobile-hint{display:none}
@media(max-width:730px){.map-wrap{touch-action:pan-y}.desktop-hint{display:none}.mobile-hint{display:inline}}