*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:85px}body{margin:0;background:#fafbf9;color:#172d2c;font:16px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:#157569;text-decoration:none}a:hover{text-decoration:underline}nav{max-width:1180px;margin:auto;padding:23px 32px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #dce5df}nav div{display:flex;gap:25px}.brand{font-size:20px;font-weight:800;color:#172d2c}span{color:#208e7e}main{max-width:1080px;margin:auto;padding:0 28px}header{text-align:center;padding:72px 20px 45px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:800;color:#448276}h1{font-size:clamp(48px,8vw,83px);line-height:1.1;letter-spacing:-4px;margin:23px 0}h2{font-size:clamp(20px,3vw,31px);line-height:1.4;font-weight:500;max-width:850px;margin:24px auto}h3{font-size:clamp(25px,4vw,38px);line-height:1.3;letter-spacing:-1px;margin:10px 0 24px}h4{font-size:20px;line-height:1.4}.authors{margin:28px auto 15px;line-height:2;font-size:16px}.affiliations{font-size:12px;color:#657572;line-height:1.9}.small{font-size:11px;color:#657572}sup{font-size:9px}.buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}.button{background:#172d2c;color:white;padding:10px 21px;border-radius:25px;font-size:14px;font-weight:600}.button.light{background:#e8f0e9;color:#245c51}figure{margin:30px 0 45px;background:white;padding:22px;border:1px solid #e0e9e2;border-radius:16px}figure img{width:100%;height:auto;display:block}figcaption{font-size:12px;color:#657572;text-align:center;margin-top:20px}.hero{padding:32px}section{padding:48px 0;border-bottom:1px solid #dce5df}.lead{font-size:19px;max-width:900px;color:#4d625d}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:35px}.number{font:14px monospace;letter-spacing:2px}.method-grid p{font-size:14px;color:#657572}.table-wrap{overflow-x:auto;background:white;border:1px solid #dce5df;border-radius:12px}table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}th{background:#e9f1e9;font-size:11px;text-transform:uppercase;letter-spacing:.5px}td,th{padding:16px 13px;border-bottom:1px solid #e9eee9}tr:last-child td{border:0}strong{color:#147565}.note{font-size:12px;line-height:1.8;color:#657572;border-left:3px solid #bbd8c8;padding-left:18px;margin:22px 0 34px}footer{padding:44px;text-align:center;font-size:12px;color:#657572}@media(max-width:650px){nav{padding:18px}nav div{gap:14px;font-size:12px}nav div a:first-child{display:none}main{padding:0 18px}header{padding:46px 0 20px}h1{letter-spacing:-2px}.method-grid{grid-template-columns:1fr;gap:5px}.hero,figure{padding:12px}.authors{font-size:14px}section{padding:35px 0}td,th{padding:12px 10px}}
/* Visual hierarchy and progressive-enhancement gallery. */
[hidden]{display:none!important}
body{background:#f8faf8}
nav{flex-wrap:wrap;gap:14px}
nav div{flex-wrap:wrap;gap:20px}
header{padding-bottom:28px}
.hero-summary{font-size:clamp(18px,2.5vw,24px);line-height:1.5;color:#4d625d;margin:32px auto 0}
#video{padding-top:20px}#video h3{max-width:720px}
#motivation{padding-top:65px}.hero{margin-top:55px}
.method-grid article{background:#fff;border:1px solid #dce5df;border-radius:16px;padding:24px}
.result-details{margin-top:28px}.result-details summary{cursor:pointer;font-weight:600;padding:18px 0}.result-details .table-wrap{margin-top:8px}
.gallery-controls{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0}
.gallery-controls button{font:inherit;font-size:14px;cursor:pointer;border:1px solid #b9cec3;border-radius:24px;padding:10px 18px;background:#fff;color:#245c51}
.gallery-controls button[aria-pressed="true"]{background:#172d2c;color:#fff;border-color:#172d2c}
.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px}
.resource{padding:25px;border:1px solid #dce5df;background:#fff;border-radius:16px;color:#172d2c;transition:transform .18s,border-color .18s}
.resource:hover{text-decoration:none;transform:translateY(-3px);border-color:#208e7e}.resource span{font:12px monospace;letter-spacing:1px}.resource p{font-size:14px;color:#657572}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #208e7e;outline-offset:5px}
.skip-link{position:absolute;left:16px;top:-80px;background:#fff;padding:12px;z-index:10}.skip-link:focus{top:10px}
@media(max-width:650px){.resource-grid{grid-template-columns:1fr}.method-grid article{padding:20px}nav div{gap:12px}nav div a:first-child{display:inline}#motivation{padding-top:35px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.resource{transition:none}.resource:hover{transform:none}}