/* HK2.4: readable mobile navigation, local model motion and technical explanations. */
@media(max-width:860px){
 .home .site-header .nav{top:100%;background:#0b1713;color:#f1ede4;gap:0;padding:16px 24px 22px;max-height:calc(100vh - 84px);max-height:calc(100dvh - 84px);overflow-y:auto;overscroll-behavior:contain;box-shadow:0 18px 28px #0004;border-color:#405b49}
 .home .nav a:not(.header-contact){display:block;color:#f1ede4;opacity:1;min-height:46px;padding:13px 8px;border-bottom:1px solid #2c4335}
 .home .nav a:not(.header-contact):hover,.home .nav a:not(.header-contact):focus-visible{background:#1c3426;color:#ffb19c}
 .home .nav .header-contact{background:#f1ede4;color:#14271e;margin:16px 0 0;min-height:46px;padding:13px 16px}
 .home .nav a:focus-visible{outline:2px solid #ffb19c;outline-offset:2px}
 .detail-hk23 .nav{top:100%;max-height:calc(100vh - 84px);max-height:calc(100dvh - 84px);overflow-y:auto;overscroll-behavior:contain}
}
.hk24-core-svg{display:block;width:100%;height:auto;overflow:visible}
.hk24-core-svg .core-grid{stroke:#7fa68e;stroke-opacity:.19;fill:none;stroke-width:.65}
.hk24-core-svg .core-latitude{stroke:#bdc8a4;stroke-opacity:.3;fill:none;stroke-width:.7}
.hk24-core-svg .core-stream{stroke:#f99b7c;stroke-width:2;stroke-dasharray:7 100;fill:none;animation:hk24-stream 7s linear infinite}
.hk24-core-svg .core-stream.alt{stroke:#b3e6ca;animation-delay:-3.5s}
.hk24-core-svg .core-rotate{transform-origin:280px 160px;animation:hk24-orbit 28s linear infinite}
.hk24-core-svg .core-reverse{animation-direction:reverse;animation-duration:39s}
.hk24-core-svg .core-breathe{transform-origin:280px 160px;animation:hk24-breathe 5.5s ease-in-out infinite}
.hk24-core-svg .core-spark{animation:hk24-spark 4.5s ease-in-out infinite;animation-delay:var(--delay,0s)}
.hk24-core-svg .core-label{font:8px Arial,sans-serif;letter-spacing:1.6px;fill:#b8cdbd}
.hk24-core-svg .core-cross{stroke:#b7cbbd;stroke-width:.7;opacity:.35}
.hk22-engine-art{height:205px}.hk22-engine-art .hk24-core-svg{height:100%}.hk22-map{background:radial-gradient(ellipse at 50% 23%,#284c3666,transparent 54%),linear-gradient(140deg,#17342666,#091e1688)}
.hk24-model-visual{background:radial-gradient(ellipse at 50% 40%,#244c36,#0b1d15 65%);border:1px solid #46694e;border-radius:9px;overflow:hidden;color:#f1ede4;position:relative;min-width:0;box-shadow:0 24px 55px #183b1d1a}
.hk24-model-top{display:flex;justify-content:space-between;gap:15px;align-items:center;padding:19px 22px;border-bottom:1px solid #8ca48c25}
.hk24-model-top span{font:8px/1.7 Arial,sans-serif;letter-spacing:1.4px;color:#b1c4b4}
.hk24-model-top button{font-size:10px;background:#153021;color:#e4e9d9;border:1px solid #68806b;border-radius:3px;padding:7px 10px;min-height:32px;white-space:nowrap}
.hk24-model-top button:hover{background:#294834}.hk24-model-top button:disabled{opacity:.7}
.hk24-model-art{position:relative;padding:12px 12px 0}.hk24-model-art:before{content:"";position:absolute;inset:0;background:linear-gradient(transparent 49.5%,#aec9ae0b 50%,transparent 50.5%);background-size:100% 8px;pointer-events:none}
.hk24-model-art .hk24-core-svg{position:relative;max-height:280px}
.hk24-core-caption{text-align:center;margin:-5px 0 24px;position:relative}.hk24-core-caption span{font:9px Arial,sans-serif;letter-spacing:3px;color:#dbb59e}.hk24-core-caption strong{display:block;font-size:24px;font-weight:500;letter-spacing:.5px;margin-top:9px}
.hk24-stage-buttons{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid #59755a66;margin:0 20px;gap:3px}
.hk24-stage-buttons button{padding:14px 4px;background:transparent;border:0;border-bottom:2px solid transparent;color:#adc2ac;font-size:10px;line-height:1.7;min-height:63px}
.hk24-stage-buttons button span{display:block;font:8px/1.5 Arial;letter-spacing:1.2px;margin-bottom:4px;color:#90ae99}
.hk24-stage-buttons button[aria-pressed="true"]{border-bottom-color:#ff9075;background:#f29a7510;color:#ffd3bd}.hk24-stage-buttons button[aria-pressed="true"] span{color:#ffd3bd}
.hk24-stage-copy{padding:16px 22px 19px;min-height:103px}.hk24-stage-copy strong{font-size:13px;font-weight:500;color:#e6ead9}.hk24-stage-copy p{font-size:11px;color:#b1c3ae;margin-top:6px;line-height:1.9}.hk24-model-foot{display:flex;justify-content:space-between;gap:12px;padding:12px 22px;background:#0a1812;border-top:1px solid #3a5440;font-size:9px;color:#a6bca8}.hk24-model-foot b{font-weight:400;color:#f3ae91}
.hk24-tech{--tech-ink:#dfe9da;--tech-muted:#adc2b0;--tech-line:#3f5e49;background:#10271b;color:var(--tech-ink);padding:32px 35px;border:1px solid var(--tech-line);border-radius:6px;min-width:0}
.hk24-tech-title{display:flex;align-items:baseline;justify-content:space-between;gap:20px;border-bottom:1px solid var(--tech-line);padding-bottom:18px;margin-bottom:24px}
.hk24-tech-kicker{font:9px/1.6 Arial,sans-serif;letter-spacing:1.7px;color:#efb199}.hk24-tech-title h3{font-size:22px;font-weight:500;margin:7px 0 0}.hk24-tech-label{font-size:10px;color:#a5bba6;white-space:nowrap}
.hk24-tech-body{display:grid;grid-template-columns:1.05fr 1fr;gap:50px;align-items:center}.hk24-tech-terms{display:flex;gap:10px 20px;flex-wrap:wrap}.hk24-tech-terms span{font-size:11px;color:#dde5d5;line-height:1.8}.hk24-tech-terms small{display:block;font:8px/1.6 Arial;letter-spacing:.7px;color:#a6c2a9}.hk24-tech-value{font-size:13px;line-height:1.95;color:var(--tech-muted);margin-top:18px;max-width:590px}
.hk24-equation{font:clamp(24px,2.5vw,35px)/1.7 Georgia,"Times New Roman",serif;color:#ffbea5;letter-spacing:.2px;overflow-wrap:anywhere}.hk24-equation sup,.hk24-equation sub{font-size:.56em}.hk24-equation .eq-line{display:block;white-space:nowrap}.hk24-equation .eq-line:last-child{font-size:.8em}.hk24-equation .eq-small{font-size:.7em}.hk24-equation-note{font-size:11px;line-height:1.9;color:#b7cbb7;margin-top:9px}
.hk24-tech details{margin-top:23px;border-top:1px solid var(--tech-line);padding-top:16px}.hk24-tech summary{cursor:pointer;font-size:11px;line-height:1.7;color:#eed2bb;width:fit-content}.hk24-tech details p{font-size:11px;color:var(--tech-muted);margin:12px 0 0;line-height:2;max-width:1000px}.hk24-tech details a{text-decoration:underline;text-underline-offset:3px;color:#dfc8af}
.hk24-model-tech{margin-top:45px}.hk24-quant-tech{margin-top:37px}.hk24-quant-tech>.hk24-tech[hidden]{display:none}.hk24-technical-section{padding:55px 0;background:#e3e8dc}.hk24-technical-section .hk24-tech{border-radius:7px;padding:40px}
.hk24-enterprise-method{margin-top:28px;border-top:1px solid #a9b8a2;padding-top:22px;display:grid;grid-template-columns:.65fr 1.5fr;gap:35px}.hk24-enterprise-method>span{font:9px/1.8 Arial;letter-spacing:1.5px;color:#896046}.hk24-enterprise-method .hk24-tech-terms span{color:#234832}.hk24-enterprise-method .hk24-tech-terms small{color:#627760}.hk24-enterprise-method p{font-size:12px;color:#53664f;line-height:1.9;margin-top:12px}
.hk24-model-visual:not(.is-in-view) .hk24-core-svg *,.hk24-model-visual.is-paused .hk24-core-svg *,body[data-hk24-hidden="true"] .hk24-core-svg *,.hk22-hero:not(.is-in-view) .hk24-core-svg *,.hk22-hero.is-paused .hk24-core-svg *{animation-play-state:paused!important}
@keyframes hk24-stream{to{stroke-dashoffset:-428}}@keyframes hk24-orbit{to{transform:rotate(360deg)}}@keyframes hk24-breathe{0%,100%{opacity:.65;transform:scale(.98)}50%{opacity:1;transform:scale(1.035)}}@keyframes hk24-spark{0%,100%{opacity:.25}45%{opacity:.95}}
@media(max-width:1000px){.hk24-tech-body{gap:30px}.hk24-tech{padding:28px}.hk24-equation{font-size:27px}.hk24-model-top{padding:16px}.hk24-model-top span{font-size:7px}.hk24-stage-buttons{margin-inline:14px}.hk24-stage-copy{padding-inline:18px}.hk24-core-caption strong{font-size:22px}}
@media(max-width:760px){.hk22-engine-art{height:180px}.hk24-tech-title{align-items:start;gap:12px}.hk24-tech-title h3{font-size:19px}.hk24-tech-label{font-size:9px}.hk24-tech-body{grid-template-columns:1fr;gap:24px}.hk24-tech{padding:24px 22px}.hk24-equation{font-size:29px}.hk24-tech-value{font-size:12px}.hk24-model-tech{margin-top:30px}.hk24-tech-terms{gap:12px 22px}.hk24-technical-section{padding:35px 0}.hk24-technical-section .hk24-tech{padding:26px 22px}.hk24-enterprise-method{grid-template-columns:1fr;gap:17px}.hk24-core-caption{margin-bottom:20px}.hk24-model-top span{font-size:8px}}
@media(max-width:360px){.hk24-tech{padding:20px 16px}.hk24-technical-section .hk24-tech{padding:22px 16px}.hk24-tech-title{display:block}.hk24-tech-label{display:block;margin-top:10px}.hk24-equation{font-size:24px}.hk24-model-top{padding:14px 12px;gap:8px}.hk24-model-top span{font-size:7px;letter-spacing:1px}.hk24-stage-buttons{margin-inline:9px}.hk24-stage-buttons button{font-size:9px}.hk24-stage-copy{min-height:117px;padding-inline:14px}.hk24-model-foot{padding-inline:13px;font-size:8px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}.hk24-core-svg *{animation:none!important}}