:root{--ink:#213b37;--accent:#147468;--muted:#62746d;--line:#dce5df;--paper:#fff;--canvas:#f7f9f6}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.95;overflow-wrap:anywhere}
a{color:#066d62;text-underline-offset:.2em}
a:hover{text-decoration-thickness:2px}
a:focus-visible{outline:3px solid #cd8400;outline-offset:5px;border-radius:2px}
.site-header{background:#173c37;color:#fff}
.header-inner{max-width:1032px;margin:auto;padding:21px 28px}
.header-inner>a{color:inherit;text-decoration:none;font-size:15px;font-weight:600}
.header-inner p{margin:2px 0 0;color:#d7e5df;font-size:11px;letter-spacing:.035em;line-height:1.65}
.page{max-width:980px;margin:0 auto;padding:30px 36px 76px}
.preview-notice{display:inline-block;margin:0 0 18px;padding:3px 12px;border:1px solid #e6d6a4;border-radius:5px;background:#fff8e5;color:#6b561e;font-size:12px}
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:42px}
.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:700;color:var(--accent)}
h1{font-size:clamp(28px,4.7vw,43px);line-height:1.45;letter-spacing:.015em;margin:8px 0 0}
.english{font-size:17px;color:var(--muted);margin:2px 0 16px}
.principle{display:inline-block;margin:0;padding:2px 13px;border:1px solid #d9e9de;border-radius:20px;background:#eaf4e9;color:#3b694e;font-size:12px}
.lead{font-size:18px;line-height:2.1;margin:32px 0 12px;padding:3px 0 3px 22px;border-left:3px solid var(--accent);text-wrap:pretty}
.definition{margin:0 0 29px;padding-left:25px;color:var(--muted);font-size:13px}
.related{font-size:13px;border-block:1px solid var(--line);padding:13px 0;margin:0 0 32px;line-height:1.9}
.related strong{font-weight:600}
figure{margin:0;min-width:0}
.main-figure{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:12px}
figure img{display:block;width:100%;height:auto}
.zoom-image{display:block;cursor:zoom-in}
figcaption{margin-top:14px;font-size:13px;line-height:1.8;color:#435e54;text-align:center;text-wrap:pretty}
.figure-pair{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:38px;align-items:start}
.figure-pair--one-two{grid-template-columns:1fr 2fr;gap:24px}
.figure-pair--single{grid-template-columns:1fr;max-width:560px;margin-inline:auto}
.figure-gallery{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.figure-column{display:grid;gap:26px;min-width:0}
.figure-rows{display:grid;gap:28px}
.figure-row--three-one{grid-template-columns:3fr 1fr}
.figure-gallery figure,.case-study figure{padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:10px}
.case-study{display:grid;grid-template-columns:1fr 1.3fr;align-items:center;gap:24px;margin-top:38px;padding:24px;background:#fffbe7;border:1px solid #e6dfbd;border-radius:10px;font-size:14px}
.case-study--blue{background:#e8f5fc;border-color:#c5dfe9}
.case-study--stacked{display:block}
.case-study--stacked>div{margin-top:18px}
.photo-links{margin:18px 0 0;padding-left:1.5em;font-size:13px;line-height:1.8}
.photo-links li+li{margin-top:6px}
.paired-images{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:start}
.figure-pair .photograph-group{background:#e3f2f9}
.figure-pair figure{padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:10px}
.figure-pair .photograph{margin-top:18px}
.figure-pair--one-two .photograph{margin-top:0}
.evaluation-symbol{font-family:"DejaVu Sans",sans-serif;font-size:21px;margin-right:5px;vertical-align:-1px;color:#435e54}
.column{margin-top:38px;padding:25px 28px;background:var(--paper);border:1px dashed #9cb7a8;border-radius:10px}
.column h2{margin:0 0 18px;font-size:20px;line-height:1.7;display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.column-icon{width:38px;height:auto;flex:none}
.column p{margin:12px 0;font-size:15px;line-height:2}
.column .column-source{font-size:12px;color:var(--muted);margin-bottom:0}
.source{margin-top:45px;padding-top:23px;border-top:1px solid var(--line);font-size:12px;line-height:1.9;color:var(--muted)}
.source p{margin:0 0 7px}
.edition-note{font-size:11px}
.back-link{display:inline-block;margin-top:15px;font-size:13px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-80px;left:20px;padding:8px 16px;background:white;z-index:2}
.skip-link:focus{top:10px}
@media(max-width:640px){.header-inner{padding:17px 19px}.header-inner p{font-size:10px}.page{padding:22px 18px 52px}.breadcrumb{font-size:11px;margin-bottom:28px}.lead{font-size:16px;line-height:2.05;padding-left:15px;margin-top:26px}.definition{padding-left:18px;font-size:12px}.main-figure{padding:10px;border-radius:8px}.figure-pair{grid-template-columns:1fr;gap:24px;margin-top:26px}.figure-pair figure{padding:12px}.figure-pair .photograph{margin-top:0}figcaption{font-size:12px}.source{margin-top:32px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(max-width:640px){.paired-images{grid-template-columns:1fr;gap:14px}}
@media(max-width:640px){.column{padding:18px;margin-top:26px}.column h2{font-size:18px}.column p{font-size:14px}}
@media(max-width:640px){.figure-gallery,.case-study{grid-template-columns:1fr;gap:24px}.figure-gallery figure{padding:12px}.case-study{padding:16px;margin-top:26px}}
@media print{body{background:white}.skip-link,.back-link{display:none}.site-header{background:white;color:#173c37}.header-inner p{color:#435e54}.page{padding:20px}.breadcrumb{margin-bottom:20px}figure{break-inside:avoid}.main-figure,.figure-pair figure{border:0;padding:0}.source a{color:inherit}}

.figure-section{margin-top:28px}
.figure-section--blue{padding:22px;background:#e8f5fc;border:1px solid #c5dfe9;border-radius:10px}
.figure-section h2{font-size:16px;line-height:1.85;margin:0 0 18px}
.figure-gallery--3{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media(max-width:640px){.figure-section--blue{padding:14px}.figure-section h2{font-size:14px}.figure-gallery--3{grid-template-columns:1fr;gap:24px}}

.column-heading{margin-bottom:12px}

.column sup{font-size:.7em;line-height:0;vertical-align:super;white-space:nowrap}

.case-study--multiple{display:block}
.case-study--multiple h2{font-size:17px;line-height:1.8;margin:0 0 14px}
.case-study-content{display:grid;grid-template-columns:1fr 2fr;gap:24px;align-items:center;margin-top:20px}
.case-study-content p{margin:0}
.case-study-content .figure-gallery{gap:16px}
.figure-row--end{align-items:end}
.figure-rows>.figure-gallery:has(>figure:only-child){grid-template-columns:1fr}
@media(max-width:640px){.case-study-content{grid-template-columns:1fr;gap:20px}.case-study--multiple h2{font-size:16px}.case-study-content .figure-gallery{gap:24px}}

.column-content{display:grid;grid-template-columns:1.8fr 1fr;gap:24px;align-items:center}
.case-study--plain{background:transparent;border:0;padding:0}
.case-study h2{font-size:17px;line-height:1.8;margin:0 0 14px}
.figure-gallery--single{grid-template-columns:1fr}
.case-studies-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:38px;align-items:start}
.case-studies-grid>.case-study{display:block;margin-top:0}
.case-studies-grid>.case-study:not(.case-study--stacked)>figure{margin-top:18px}
@media(max-width:640px){.column-content,.case-studies-grid{grid-template-columns:1fr}.case-studies-grid{gap:24px;margin-top:26px}.case-study h2{font-size:16px}}