:root{--ink:#172323;--muted:#687373;--paper:#ffffff;--tint:#ffffff;--acid:#d6f05f;--aqua:#64d8c9;--line:#cbd3cf;--dark:#142020;--mono:'DM Mono',monospace;--sans:'DM Sans',sans-serif;--display:'Space Grotesk',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55}.grain{position:fixed;inset:0;pointer-events:none;opacity:.03;z-index:10;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E")}.site-header{height:76px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 5vw;position:sticky;top:0;background:#ffffff;z-index:5}.wordmark,.header-link,.desktop-nav a,.site-footer{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-decoration:none;color:inherit}.wordmark{font-weight:500;white-space:nowrap}.wordmark-mark{display:inline-block;width:24px;height:24px;margin-right:8px;vertical-align:-7px;overflow:visible}.wordmark-mark path{fill:none;stroke:currentColor;stroke-width:1.15;stroke-linecap:round;stroke-linejoin:round}.wordmark-mark circle{fill:var(--acid);stroke:currentColor;stroke-width:1.15}.desktop-nav{display:flex;gap:26px}.desktop-nav a,.header-link{color:var(--muted);transition:color .2s}.desktop-nav a:hover,.header-link:hover{color:var(--ink)}.header-link span{color:#83a20d;margin-left:5px}.section-pad{padding-left:8vw;padding-right:8vw}.hero{min-height:calc(100vh - 76px);display:grid;grid-template-columns:1fr .9fr;align-items:center;gap:7vw;padding-top:9vh;padding-bottom:9vh}.eyebrow,.section-number,.card-kicker{font:500 11px var(--mono);letter-spacing:.14em;color:#71807e}.pulse-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#b7d734;margin-right:8px;box-shadow:0 0 0 5px rgba(183,215,52,.15)}h1,h2,h3{font-family:var(--display);letter-spacing:-.045em;line-height:1.03;margin:0}h1{font-size:clamp(52px,7.4vw,110px);max-width:760px;margin:28px 0 30px}h1 em{font-style:normal;color:#77858a}.hero-lede{font-size:18px;line-height:1.5;max-width:510px;color:#576564}.hero-actions{display:flex;align-items:center;gap:28px;margin-top:40px}.button{display:inline-flex;align-items:center;gap:28px;border-radius:2px;text-decoration:none;padding:14px 18px;font:500 12px var(--mono);letter-spacing:.06em;transition:transform .2s,background .2s}.button:hover{transform:translateY(-2px)}.button-dark{background:var(--ink);color:var(--paper)}.button-dark:hover{background:#31433f}.text-link{font:500 12px var(--mono);color:var(--ink);text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:3px}.hero-object{min-height:540px;position:relative;border:1px solid var(--line);background:#dfe6e1;overflow:hidden;display:flex;align-items:center;justify-content:center}.hero-object:before{content:'';position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(100,216,201,.65),rgba(100,216,201,0) 68%);top:12%;left:18%}.object-label,.object-caption,.placeholder-top{font:10px var(--mono);letter-spacing:.08em;color:#6b7977}.object-label{position:absolute;top:20px;left:20px}.object-caption{position:absolute;left:20px;right:20px;bottom:20px;display:flex;justify-content:space-between;border-top:1px solid #b9c8c4;padding-top:10px}.insole-shape{position:relative;width:52%;aspect-ratio:.42/1;transform:rotate(24deg);border-radius:48% 52% 44% 56% / 25% 31% 69% 75%;background:linear-gradient(145deg,#c9d94b,#83d2bd 45%,#466e6b);box-shadow:18px 24px 0 rgba(23,35,35,.12),inset 8px -14px 0 rgba(20,32,32,.12);overflow:hidden}.insole-grid{position:absolute;inset:0;background-image:linear-gradient(38deg,transparent 44%,rgba(244,245,239,.7) 45%,rgba(244,245,239,.7) 49%,transparent 50%),linear-gradient(-38deg,transparent 44%,rgba(244,245,239,.42) 45%,rgba(244,245,239,.42) 49%,transparent 50%);background-size:25px 25px;opacity:.75}.zone-tag{position:absolute;font:9px var(--mono);letter-spacing:.06em;color:var(--paper);background:rgba(20,32,32,.78);padding:5px 6px;white-space:nowrap}.zone-heel{bottom:18%;left:-22%}.zone-fore{top:20%;right:-30%}.zone-arch{top:48%;left:50%}.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-top:20px;padding-bottom:20px}.stat{display:flex;gap:16px;align-items:baseline;border-right:1px solid var(--line);padding-left:2vw}.stat:first-child{padding-left:0}.stat:last-child{border-right:0}.stat strong{font:500 28px var(--display)}.stat span{font:11px var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.section{padding-top:150px;padding-bottom:150px}.section-tint{background:var(--tint)}.section-dark{background:#ffffff;color:var(--ink)}.section-intro{display:grid;grid-template-columns:.65fr 1.5fr 1fr;gap:3vw;align-items:start;margin-bottom:70px}.section-number{padding-top:8px}.section h2{font-size:clamp(37px,5vw,74px);max-width:780px}.section-summary{color:var(--muted);max-width:340px;margin:6px 0 0}.section-dark .section-number,.section-dark .section-summary{color:var(--muted)}.question-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:7vw;align-items:center}.placeholder-card{border:1px dashed #aab8b3;background:rgba(255,255,255,.22);position:relative}.pressure-placeholder{height:560px;padding:18px}.placeholder-top{display:flex;justify-content:space-between;font-size:9px}.pressure-map{height:450px;width:52%;margin:38px auto 0;border-radius:49% 51% 44% 56% / 20% 25% 75% 80%;background:radial-gradient(ellipse at 45% 82%,#fa3c17 0 8%,#ff8e23 13%,#f1ce3a 22%,transparent 34%),radial-gradient(ellipse at 41% 36%,#ed3b18 0 8%,#ff9c20 14%,#ebd03d 22%,transparent 35%),linear-gradient(160deg,#1e78e6,#35c6be 44%,#f1d348 72%,#ef3a19);position:relative;box-shadow:inset 0 0 50px rgba(255,255,255,.16)}.map-foot{position:absolute;top:45%;left:43%;font:9px var(--mono);color:rgba(255,255,255,.72);text-align:center;letter-spacing:.12em}.pressure-spot{position:absolute;width:35px;height:35px;border-radius:50%;background:#fa3518;filter:blur(10px);opacity:.78}.spot-1{left:28%;top:29%}.spot-2{left:61%;top:35%}.spot-3{left:38%;bottom:8%}.spot-4{right:6%;top:24%}.legend{display:flex;gap:10px;align-items:center;justify-content:center;font:9px var(--mono);color:var(--muted);margin-top:18px}.legend i{height:7px;width:110px;background:linear-gradient(90deg,#2c7be5,#41c7b9,#f1d03b,#f33d18)}.question-notes{display:flex;flex-direction:column;gap:34px}.note-block{display:grid;grid-template-columns:34px 1fr;gap:17px;border-top:1px solid var(--line);padding-top:19px}.note-index{font:13px var(--mono);color:#81900f}.note-block h3{font-size:21px;letter-spacing:-.02em;margin-bottom:7px}.note-block p{color:var(--muted);margin:0}.material-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:7vw;align-items:stretch}.media-placeholder{min-height:420px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(145deg,#213431,#53766b);color:#e8f2de;border-color:#6c8980}.media-icon{width:54px;height:54px;border:1px solid #d6f05f;border-radius:50%;display:grid;place-items:center;color:#d6f05f;margin-bottom:22px}.media-title{font:11px var(--mono);letter-spacing:.1em}.media-placeholder small{font-size:12px;color:#b7c9bb;margin-top:10px}.material-copy{display:flex;flex-direction:column;gap:14px}.material-card{border:1px solid var(--line);padding:24px 24px 20px;background:rgba(255,255,255,.28)}.material-card strong{display:block;font:500 31px var(--display);margin:10px 0 6px}.material-card p{color:var(--muted);font-size:14px;margin:0 0 16px}.hardness-bar{height:7px;background:#d1dbd5}.hardness-bar i{display:block;height:100%;background:linear-gradient(90deg,#58cabd,#d6f05f)}.fine-print{font:11px var(--mono);color:var(--muted);margin:9px 3px}.rig-row{display:grid;grid-template-columns:.8fr 1.2fr;gap:7vw;margin-top:110px;align-items:center}.rig-copy h3{font-size:clamp(27px,3.2vw,43px);max-width:450px;margin:18px 0}.rig-copy>p:not(.section-number){max-width:470px;color:var(--muted)}.rig-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}.rig-specs span{font:9px var(--mono);padding:7px 9px;border:1px solid #aab8b3}.rig-placeholder{min-height:330px;padding:18px}.rig-diagram{height:240px;position:relative;margin:20px auto 0;max-width:450px;border:1px solid #9caea8;border-radius:10px;background:rgba(220,231,224,.55)}.rig-plate{position:absolute;left:14%;right:14%;top:54%;height:54px;border:3px solid #46625d;border-radius:4px;background:#d7e1db}.rig-sensor{position:absolute;width:96px;height:40px;left:39%;top:35%;border:2px solid #46625d;background:#86b1a6;border-radius:3px}.rig-arrow{position:absolute;top:11%;left:46%;font:10px var(--mono);color:#80900f}.rig-line{position:absolute;left:50%;top:20%;height:15%;border-left:1px dashed #80900f}.rig-diagram span{position:absolute;bottom:17%;right:16%;font:9px var(--mono);color:#60706d}.process-line{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:30px 0 50px}.process-step{display:flex;align-items:center;gap:15px;font:12px var(--mono);line-height:1.25}.process-step b{width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:var(--acid);font-weight:500}.process-connector{height:1px;background:var(--line);flex:1}.software-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin-bottom:45px}.software-label{font:10px var(--mono);color:var(--muted);margin-right:auto}.software-pill{border:1px solid var(--line);padding:10px 13px;display:flex;gap:9px;align-items:baseline}.software-pill b{font:500 13px var(--display)}.software-pill span{font:10px var(--mono);color:var(--muted)}.system-image-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.cad-placeholder{min-height:300px;padding:20px;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(135deg,#d8e2dc,#eef0df)}.cad-placeholder:before{content:'';position:absolute;inset:26% 13% 16%;background:repeating-linear-gradient(30deg,transparent 0 9px,rgba(85,123,112,.35) 10px 11px),repeating-linear-gradient(-30deg,transparent 0 9px,rgba(85,123,112,.2) 10px 11px);clip-path:polygon(10% 24%,80% 7%,94% 75%,34% 98%)}.cad-placeholder span,.cad-placeholder strong,.cad-placeholder small{position:relative}.cad-placeholder span{font:10px var(--mono);color:#65746f}.cad-placeholder strong{font:25px var(--display);margin-top:12px}.cad-placeholder small{color:var(--muted);font-size:12px}.lattice-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.lattice-card{min-height:160px;padding:14px;border:1px solid var(--line);background:rgba(255,255,255,.38);display:flex;flex-direction:column;justify-content:space-between}.lattice-visual{height:78px;background-color:#d8e3de;background-image:linear-gradient(30deg,transparent 45%,#749b8f 46% 50%,transparent 51%),linear-gradient(-30deg,transparent 45%,#a7c5af 46% 50%,transparent 51%);background-size:22px 22px;opacity:.72}.lattice-card:nth-child(2n) .lattice-visual{background-image:radial-gradient(circle at 30% 30%,#6f9e91 0 3px,transparent 4px),radial-gradient(circle at 70% 70%,#94b9a7 0 3px,transparent 4px);background-size:25px 25px}.lattice-card:nth-child(3n) .lattice-visual{background-image:repeating-linear-gradient(90deg,transparent 0 8px,#76a397 9px 11px),repeating-linear-gradient(0deg,transparent 0 8px,#b0cabb 9px 11px)}.lattice-card:nth-child(4n) .lattice-visual{border-radius:50%;background-image:radial-gradient(ellipse,#638c82 0 2px,transparent 3px);background-size:17px 17px}.lattice-card strong{font:500 15px var(--display)}.lattice-card span{font:9px var(--mono);color:var(--muted)}.experiment-toolbar{display:flex;gap:9px;align-items:center;margin-bottom:20px;font:10px var(--mono);color:var(--muted)}.filter-button{border:1px solid var(--line);padding:8px 13px;background:transparent;font:10px var(--mono);cursor:pointer}.filter-button.active,.filter-button:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}.experiment-table-wrap{border:1px solid var(--line);overflow:auto}table{border-collapse:collapse;width:100%;min-width:760px;font-size:13px}th,td{text-align:left;padding:16px 18px;border-bottom:1px solid var(--line)}th{font:10px var(--mono);letter-spacing:.08em;color:var(--muted);font-weight:400;background:#e9ece6}td:nth-child(1){font-family:var(--mono)}td:nth-child(4),td:nth-child(5){color:#79900b;font-family:var(--mono)}.status{font:10px var(--mono);color:var(--muted);border:1px solid var(--line);padding:5px 7px}.table-note{font:11px var(--mono);color:var(--muted);padding:14px 18px}.chart-placeholder{margin-top:28px;min-height:270px;padding:28px;display:flex;justify-content:space-between;gap:25px;align-items:center}.chart-placeholder h3{font-size:30px;margin:10px 0}.chart-placeholder p{max-width:430px;color:var(--muted);font-size:14px}.chart-lines{width:46%;height:160px;position:relative;border-left:1px solid #91a39b;border-bottom:1px solid #91a39b;background:repeating-linear-gradient(0deg,transparent 0 31px,rgba(128,150,141,.2) 32px)}.chart-lines:before{content:'';position:absolute;inset:20px 13px 0;background:linear-gradient(160deg,transparent 0 12%,#719d90 13% 14%,transparent 15% 28%,#9eb84b 29% 30%,transparent 31% 45%,#719d90 46% 47%,transparent 48% 62%,#c2d753 63% 64%,transparent 65%);clip-path:polygon(0 100%,0 72%,16% 56%,30% 49%,45% 42%,60% 27%,74% 18%,88% 10%,100% 0,100% 100%)}.chart-lines i{display:none}.chart-lines span,.chart-lines b{position:absolute;font:9px var(--mono);color:var(--muted)}.chart-lines span{left:-3px;top:-19px}.chart-lines b{right:0;bottom:-22px;font-weight:400}.reflection-grid{display:grid;grid-template-columns:1fr 1fr;gap:9vw;align-items:start}.section-dark h2{font-size:clamp(39px,5.5vw,78px);max-width:620px;margin-top:21px}.reflection-copy>p{font-size:21px;line-height:1.4;color:var(--muted);max-width:540px;margin:0}.next-list{display:flex;flex-direction:column;gap:14px;margin-top:36px;font:12px var(--mono);color:var(--ink)}.next-list b{color:#83958e;font-weight:400;margin-right:18px}.closing{padding-top:150px;padding-bottom:130px;max-width:1000px}.closing h2{font-size:clamp(48px,8vw,110px);max-width:800px;margin:25px 0}.closing>p:not(.eyebrow){font-size:18px;color:var(--muted);max-width:470px;margin-bottom:30px}.closing-note{display:block;font:10px var(--mono);color:var(--muted);margin-top:18px}.site-footer{display:flex;justify-content:space-between;padding:22px 5vw;border-top:1px solid var(--line);color:var(--muted)}.site-footer a{color:inherit;text-decoration:none}.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}.delay-1{transition-delay:.12s}@media(max-width:900px){.desktop-nav{display:none}.hero{grid-template-columns:1fr;padding-top:70px}.hero-object{min-height:450px}.stats-strip{grid-template-columns:repeat(2,1fr);gap:15px}.stat{border-right:0;padding-left:0}.section-intro,.question-grid,.material-layout,.rig-row,.reflection-grid{grid-template-columns:1fr;gap:30px}.section-intro{margin-bottom:45px}.section{padding-top:100px;padding-bottom:100px}.question-notes{gap:20px}.lattice-grid{grid-template-columns:repeat(2,1fr)}.process-line{align-items:flex-start;flex-direction:column;gap:12px}.process-connector{width:1px;height:25px;margin-left:23px;flex:none}.system-image-grid{grid-template-columns:1fr}.chart-placeholder{align-items:flex-start;flex-direction:column}.chart-lines{width:100%}}@media(max-width:530px){.site-header{padding:0 20px}.header-link{display:none}.section-pad{padding-left:20px;padding-right:20px}.hero{min-height:auto;padding-top:70px}.hero-object{min-height:390px;margin-top:30px}.insole-shape{width:56%}.stats-strip{padding-left:20px;padding-right:20px}.stat{display:block}.stat strong{display:block}.stat span{font-size:9px}.section{padding-top:75px;padding-bottom:75px}.pressure-placeholder{height:470px}.pressure-map{height:360px}.lattice-grid{grid-template-columns:1fr 1fr;gap:8px}.lattice-card{min-height:145px}.rig-specs{display:block}.rig-specs span{display:inline-block;margin:4px 0}.site-footer{padding:20px;display:block;line-height:2}.site-footer span,.site-footer a{display:block}.hero-actions{align-items:flex-start;flex-direction:column;gap:18px}}

/* Readable first-screen composition and accessible fallbacks. */
h1{font-size:clamp(48px,5.3vw,80px)}
.hero{grid-template-columns:1.1fr 1fr;min-height:680px;padding-top:65px;padding-bottom:65px;gap:5vw}
.hero-object{min-height:500px;height:500px}
.insole-shape{width:180px;max-height:410px}
.zone-heel{left:16%;bottom:18%}.zone-fore{right:8%;top:24%}.zone-arch{left:20%}
.chart-lines:before{display:none}
.chart-lines:after{content:'AWAITING MEASURED DATA';position:absolute;inset:45% 0;text-align:center;font:10px var(--mono);color:var(--muted)}
.references{padding-top:45px;padding-bottom:45px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.references a{color:var(--ink)}
section[id]{scroll-margin-top:95px}
a:focus-visible,button:focus-visible{outline:3px solid #518076;outline-offset:5px}
.reveal{opacity:1;transform:none}
@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-object{height:460px;min-height:460px}.section-intro{grid-template-columns:1fr}}
@media(max-width:530px){.hero{padding-top:45px;min-height:auto}.hero-object{height:400px;min-height:400px}.insole-shape{width:140px}.placeholder-top{gap:12px;flex-wrap:wrap}.pressure-map{width:66%}.hero-actions{margin-top:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Pure white page background. */
.grain{display:none}
/* Persistent bilingual navigation. */
.header-actions{display:flex;align-items:center;gap:22px}
.language-toggle{border:1px solid var(--line);border-radius:3px;background:#fff;color:var(--muted);padding:8px 10px;cursor:pointer;font:11px var(--mono);white-space:nowrap;min-height:36px}
.language-toggle:hover{border-color:var(--ink)}
.language-toggle[data-language="en"] [lang="en"],.language-toggle[data-language="zh"] [lang="zh-CN"]{color:var(--ink);font-weight:700}
html[lang="zh-CN"]{--sans:'DM Sans','PingFang SC','Microsoft YaHei',sans-serif;--display:'Space Grotesk','PingFang SC','Microsoft YaHei',sans-serif;--mono:'DM Mono','PingFang SC','Microsoft YaHei',monospace}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] h3{line-height:1.25;letter-spacing:-.025em}
html[lang="zh-CN"] .chart-lines:after{content:'等待实测数据'}
html[lang="zh-CN"] .section-number{letter-spacing:.07em}
@media(max-width:1100px){.header-actions{gap:12px}.desktop-nav{gap:14px}}
@media(max-width:530px){.header-actions{gap:0}.site-header{gap:10px}.language-toggle{font-size:10px;padding:7px 8px}.wordmark{font-size:10px;letter-spacing:.03em}.wordmark-mark{margin-right:5px}}
/* Preserve the uploaded plot, including axes and color scale. */
.pressure-figure{padding:18px;background:#fff;border-style:solid}
.pressure-image{display:block;width:auto;max-width:100%;height:auto;max-height:640px;margin:24px auto 0;object-fit:contain}
@media(max-width:530px){.pressure-figure{padding:12px}.pressure-image{margin-top:18px}}
/* Four photographs replace the material video placeholder. */
.lab-collage{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;align-self:start}
.lab-photo{display:flex;flex-direction:column;min-width:0;background:#fff;border:1px solid var(--line);color:var(--ink);text-decoration:none;overflow:hidden}
.lab-photo img{display:block;width:100%;aspect-ratio:1/1;height:auto;object-fit:cover;object-position:center;transition:filter .2s}
.lab-photo:first-child img{object-fit:contain;background:#eef0ed}
.lab-photo-record img{object-fit:contain;background:#eef0ed}
.lab-photo:hover img{filter:brightness(1.06)}
.lab-photo-label{display:flex;justify-content:space-between;gap:5px;padding:10px 9px;font:10px var(--mono);line-height:1.5}
@media(max-width:530px){.lab-collage{gap:8px}.lab-photo-label{font-size:9px;padding:8px 6px}}
#lab-photos{scroll-margin-top:100px}

/* Original photographs from the DIY compression tests. */
#rig-testing{scroll-margin-top:110px}
.rig-photos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;min-width:0}
.rig-photo{display:block;min-width:0;border:1px solid var(--line);color:var(--ink);text-decoration:none;background:#fff;overflow:hidden}
.rig-photo img{display:block;width:100%;height:auto;aspect-ratio:1706/1279;object-fit:contain}
.rig-photo:hover img{filter:brightness(1.05)}
.rig-photo:focus-visible{outline:2px solid var(--ink);outline-offset:4px}
@media(max-width:530px){.rig-photos{grid-template-columns:1fr}.rig-photo .lab-photo-label{font-size:10px;padding:10px}}

/* Separate the introduction from the detailed prototype photograph. */
.hero-photograph{position:relative;isolation:isolate;display:grid;grid-template-columns:42% 58%;gap:0;min-height:620px;padding:0;overflow:hidden;background:#fff}
.hero-photograph::before{content:none}
.hero-photograph .hero-background{position:static;grid-column:2;grid-row:1;display:block;width:100%;height:auto;align-self:center;object-fit:contain;aspect-ratio:4/3}
.hero-photograph .hero-copy{grid-column:1;grid-row:1;width:100%;max-width:none;padding:64px clamp(28px,4vw,72px);color:var(--ink);text-shadow:none}
.hero-photograph .eyebrow{font-size:10px;line-height:1.7;letter-spacing:.07em;color:#526662;margin:0 0 26px}
.hero-photograph h1{font-size:clamp(40px,4.05vw,64px);line-height:1.13;letter-spacing:-.045em;margin:0 0 26px}
.hero-photograph h1 em{color:#596d67}
.hero-photograph .hero-lede{font-size:16px;line-height:1.8;color:#52605d;max-width:400px;margin:0}
.hero-photograph .hero-actions{margin-top:32px}
.hero-photograph .button{font-size:11px;min-height:48px;text-shadow:none}
@media(max-width:900px){
  .hero-photograph{grid-template-columns:1fr;min-height:0}
  .hero-photograph .hero-copy{grid-column:1;grid-row:1;padding:55px 8vw 44px;max-width:700px}
  .hero-photograph .hero-background{grid-column:1;grid-row:2;width:100%;height:auto;aspect-ratio:4/3}
  .hero-photograph h1{font-size:clamp(40px,6.4vw,58px)}
  .hero-photograph .hero-lede{max-width:540px}
}
@media(max-width:530px){
  .hero-photograph .hero-copy{padding:40px 24px 36px}
  .hero-photograph .eyebrow{font-size:9px;margin-bottom:22px}
  .hero-photograph h1{font-size:clamp(34px,9vw,46px);margin-bottom:22px}
  .hero-photograph .hero-lede{font-size:15px;line-height:1.75}
  .hero-photograph .hero-actions{margin-top:26px}
}

/* Compressed photographs of the ten physical lattice samples. */
.lattice-photo-card{padding:0;min-height:0;display:block;background:#fff}
.lattice-photo-link{display:flex;flex-direction:column;height:100%;color:var(--ink);text-decoration:none}
.lattice-photo-link img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:contain;background:#aaa}
.lattice-photo-link strong{padding:14px 14px 6px;font:500 15px var(--display)}
.lattice-photo-link span{padding:0 14px 14px;font:10px var(--mono);color:var(--muted)}
.lattice-photo-link:hover img{filter:brightness(1.05)}
.lattice-photo-link:hover strong{color:#426b60}
@media(max-width:530px){.lattice-photo-link strong{padding:12px 10px 5px}.lattice-photo-link span{padding:0 10px 12px}}

/* Keep the modeling statement quieter than the main section headlines. */
#system .section-intro h2{font-size:clamp(19px,2.5vw,37px)}
@media(max-width:900px){#system .section-intro h2{font-size:clamp(24px,5vw,37px)}}

.system-feature{margin:45px 0 0;border:1px solid var(--line);background:#fff}
.system-feature a{display:block;background:#f0f2ee}
.system-feature img{display:block;width:100%;height:auto;max-height:560px;object-fit:contain}
.system-feature figcaption{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:16px 18px 17px;border-top:1px solid var(--line)}
.system-feature figcaption strong{font:500 24px var(--display)}
.system-feature figcaption span{font:10px var(--mono);color:var(--muted)}
@media(max-width:530px){
  .system-feature{margin-top:30px}
  .system-feature figcaption{display:block}
  .system-feature figcaption strong{display:block;font-size:20px;margin-bottom:5px}
}

.system-print-gallery{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}
.system-print-card{margin:0;border:1px solid var(--line);background:#fff}
.system-print-card a{display:block;background:#f0f2ee}
.system-print-card img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.system-print-card figcaption{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:13px 15px 14px}
.system-print-card figcaption strong{font:500 16px var(--display)}
.system-print-card figcaption span{font:9px var(--mono);color:var(--muted);white-space:nowrap}
@media(max-width:530px){
  .system-print-gallery{grid-template-columns:1fr;gap:14px}
  .system-print-card figcaption{display:block}
  .system-print-card figcaption strong{display:block;margin-bottom:4px}
}

.system-observation{display:grid;grid-template-columns:.78fr 1.22fr;gap:7vw;margin-top:95px;padding-top:45px;border-top:1px solid var(--line)}
.system-observation-copy h3{font:500 clamp(28px,3.5vw,46px) var(--display);line-height:1.08;letter-spacing:-.04em;margin:18px 0}
.system-observation-copy>p:last-child{max-width:430px;color:var(--muted);font-size:16px;line-height:1.75;margin:0}
.system-observation-gallery{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.system-observation-card{margin:0;border:1px solid var(--line);background:#fff}
.system-observation-card a{display:block;background:#f0f2ee}
.system-observation-card img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.system-observation-card figcaption{padding:12px 13px 13px}
.system-observation-card figcaption strong{display:block;font:500 15px var(--display);margin-bottom:4px}
.system-observation-card figcaption span{font:9px var(--mono);color:var(--muted)}
@media(max-width:900px){
  .system-observation{grid-template-columns:1fr;gap:30px;margin-top:70px}
  .system-observation-copy>p:last-child{max-width:600px}
}
@media(max-width:530px){
  .system-observation{margin-top:55px;padding-top:30px}
  .system-observation-gallery{grid-template-columns:1fr;gap:14px}
}

.reflection-image-card{margin:28px 0 0;border:1px solid var(--line);background:#fff}
.reflection-image-card a{display:block;background:#f0f2ee}
.reflection-image-card img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.reflection-image-card.reflection-image-wide img{aspect-ratio:16/9;object-fit:contain}
.reflection-image-card figcaption{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:13px 15px 14px}
.reflection-image-card figcaption strong{font:500 16px var(--display)}
.reflection-image-card figcaption span{font:9px var(--mono);color:var(--muted);white-space:nowrap}
@media(max-width:530px){
  .reflection-image-card{margin-top:22px}
  .reflection-image-card figcaption{display:block}
  .reflection-image-card figcaption strong{display:block;margin-bottom:4px}
}

.reflection-large-image{margin:55px 0 0;border:1px solid var(--line);background:#fff}
.reflection-large-image a{display:block;background:#111}
.reflection-large-image img{display:block;width:100%;height:auto;aspect-ratio:1920/995;object-fit:contain}
.reflection-large-image.reflection-failure-image img{aspect-ratio:3/2;object-fit:cover}
.reflection-large-image figcaption{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:16px 18px 17px;border-top:1px solid var(--line)}
.reflection-large-image figcaption strong{font:500 24px var(--display)}
.reflection-large-image figcaption span{font:10px var(--mono);color:var(--muted);max-width:520px;text-align:right;line-height:1.5}
.reflection-conclusion{max-width:760px;margin:90px auto 0;padding:36px 0 8px;border-top:1px solid var(--line)}
.reflection-conclusion h3{font-size:clamp(28px,4vw,52px);max-width:700px;margin:0 0 18px}
.reflection-conclusion p{font-size:20px;line-height:1.5;color:var(--muted);max-width:680px;margin:0}
.reflection-conclusion-image{max-width:1000px;margin-left:auto;margin-right:auto}
.shop-section{background:#f7f8f5}
.shop-products{display:grid;grid-template-columns:1fr;gap:0}
.shop-product{display:grid;grid-template-columns:1.05fr .95fr;gap:7vw;align-items:center;border-bottom:1px solid var(--line);padding:56px 0}
.shop-products .shop-product{display:grid;padding:56px 0;border-left:0;border-right:0;border-top:0;background:transparent}
.shop-products .shop-product-copy{padding:0}
.shop-products .shop-product-image img{aspect-ratio:1.35/1}
.shop-product-secondary{opacity:.92}
.shop-product-image{display:block;background:#e7e9e4;overflow:hidden}
.shop-product-image img{display:block;width:100%;height:auto;aspect-ratio:1.35/1;object-fit:cover;transition:transform .3s ease}
.shop-product-image:hover img{transform:scale(1.02)}
.shop-product-copy h3{font-size:clamp(30px,4vw,58px);max-width:560px;margin:18px 0}
.shop-product-copy>p:not(.eyebrow){color:var(--muted);font-size:16px;max-width:520px}
.shop-meta{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0}
.shop-meta span{font:10px var(--mono);letter-spacing:.08em;border:1px solid var(--line);padding:8px 10px}
.paypal-button.is-disabled{opacity:.5;cursor:not-allowed;pointer-events:none}
.shop-note{font:11px var(--mono)!important;color:var(--muted);margin-top:16px}
@media(max-width:530px){
  .reflection-large-image{margin-top:35px}
  .reflection-large-image figcaption{display:block}
  .reflection-large-image figcaption strong{display:block;font-size:20px;margin-bottom:5px}
  .reflection-conclusion{margin-top:60px}
  .reflection-conclusion p{font-size:17px}
  .shop-product{grid-template-columns:1fr;gap:30px;padding:30px 0}
  .shop-product-copy h3{font-size:34px}
  .shop-products{grid-template-columns:1fr}
  .shop-products .shop-product{grid-template-columns:1fr;gap:30px;padding:36px 0}
  .shop-products .shop-product-copy{padding:0}
}

.material-decision{border:1px solid var(--line);background:#fff;padding:18px 20px}
.material-decision span{display:block;font:10px var(--mono);letter-spacing:.12em;color:#7d8a86;text-transform:uppercase;margin-bottom:10px}
.material-decision p{margin:0;color:var(--ink);font-size:15px;line-height:1.65}

@media(min-width:901px){.lattice-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:900px){.shop-product{grid-template-columns:1fr;gap:30px}}

/* UI refinement: establish a calmer editorial scale across the research archive. */
:root{
  --content-max:1280px;
  --section-space:118px;
  --section-space-mobile:78px;
}
body{font-size:15px;line-height:1.65}
.section-pad{padding-left:clamp(24px,6vw,96px);padding-right:clamp(24px,6vw,96px)}
.section{padding-top:var(--section-space);padding-bottom:var(--section-space)}
.section-intro{grid-template-columns:minmax(110px,.52fr) minmax(0,1.35fr) minmax(210px,.78fr);gap:clamp(24px,4vw,64px);margin-bottom:54px}
.section h2{font-size:clamp(31px,3.7vw,56px);line-height:1.12;letter-spacing:-.035em;max-width:680px}
.section-summary{font-size:14px;line-height:1.7;max-width:330px}
.section-number,.eyebrow{font-size:10px;letter-spacing:.11em}
.hero-photograph .hero-copy{padding:clamp(48px,6vw,78px) clamp(28px,5vw,76px)}
.hero-photograph h1{font-size:clamp(42px,4.3vw,68px);line-height:1.12;max-width:560px;margin-bottom:22px}
.hero-photograph .hero-lede{font-size:15px;line-height:1.75;max-width:430px}
.hero-photograph .hero-actions{margin-top:28px}
.stats-strip{padding-top:17px;padding-bottom:17px}
.stat strong{font-size:25px}
.stat span{font-size:10px}
.question-grid,.material-layout{gap:clamp(34px,6vw,86px)}
.question-notes{gap:25px}
.note-block{gap:14px;padding-top:16px}
.note-block h3{font-size:18px;margin-bottom:5px}
.note-block p{font-size:14px;line-height:1.65}
.pressure-placeholder{height:520px}
.pressure-map{height:410px;margin-top:32px}
.material-card{padding:20px 21px 18px}
.material-card strong{font-size:27px}
.material-card p{font-size:13px;line-height:1.65}
.rig-row{gap:clamp(34px,6vw,86px);margin-top:82px}
.rig-copy h3{font-size:clamp(25px,2.8vw,38px);line-height:1.15}
.rig-copy>p:not(.section-number){font-size:14px;line-height:1.75}
.process-line{padding:20px 0 38px}
.system-feature{margin-top:36px}
.system-feature figcaption strong{font-size:19px}
.system-print-gallery,.system-observation-gallery{gap:14px}
.system-observation{gap:clamp(34px,6vw,86px);margin-top:76px;padding-top:36px}
.system-observation-copy h3{font-size:clamp(25px,3vw,40px)}
.system-observation-copy>p:last-child{font-size:14px;line-height:1.75}
.lattice-grid{gap:10px}
.lattice-photo-link strong{font-size:14px;padding:12px 13px 5px}
.lattice-photo-link span{font-size:9px;padding:0 13px 12px}
.section-dark h2{font-size:clamp(32px,4.1vw,60px);line-height:1.12;max-width:560px}
.reflection-grid{gap:clamp(34px,7vw,96px)}
.reflection-copy>p{font-size:17px;line-height:1.7;max-width:560px}
.reflection-image-card,.reflection-large-image{margin-top:34px}
.reflection-image-card figcaption{padding:11px 13px 12px}
.reflection-image-card figcaption strong{font-size:14px}
.reflection-large-image{margin-top:42px}
.reflection-large-image figcaption{padding:13px 15px 14px}
.reflection-large-image figcaption strong{font-size:18px}
.reflection-large-image figcaption span{font-size:9px}
.reflection-conclusion{margin-top:68px;padding-top:28px}
.reflection-conclusion h3{font-size:clamp(26px,3.5vw,44px);line-height:1.18}
.reflection-conclusion p{font-size:17px;line-height:1.7}
.closing{padding-top:110px;padding-bottom:95px}
.closing h2{font-size:clamp(44px,6vw,78px);line-height:1.1}
.closing>p:not(.eyebrow){font-size:16px;line-height:1.7}
.shop-products .shop-product{padding:48px 0}
.shop-product-copy h3{font-size:clamp(28px,3.4vw,48px);line-height:1.12}
.shop-product-copy>p:not(.eyebrow){font-size:15px;line-height:1.7}

html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] h3{line-height:1.28;letter-spacing:-.02em}
html[lang="zh-CN"] .section h2{font-size:clamp(30px,3.5vw,53px)}
html[lang="zh-CN"] .section-dark h2{font-size:clamp(31px,3.9vw,57px)}
html[lang="zh-CN"] .hero-photograph h1{font-size:clamp(40px,4.1vw,64px)}

@media(max-width:900px){
  .section{padding-top:var(--section-space-mobile);padding-bottom:var(--section-space-mobile)}
  .section-intro{grid-template-columns:1fr;gap:12px;margin-bottom:38px}
  .section-intro .section-summary{max-width:620px}
  .section h2,.section-dark h2{font-size:clamp(29px,5.6vw,45px);max-width:620px}
  .hero-photograph .hero-copy{padding:52px 8vw 40px}
  .hero-photograph h1{font-size:clamp(40px,6vw,56px)}
  .pressure-placeholder{height:490px}
  .pressure-map{height:380px}
  .reflection-copy>p{font-size:16px}
  .shop-products .shop-product{padding:42px 0}
}
@media(max-width:530px){
  .section{padding-top:62px;padding-bottom:62px}
  .section-intro{margin-bottom:30px}
  .section h2,.section-dark h2{font-size:clamp(27px,8vw,38px)}
  .hero-photograph .hero-copy{padding:38px 24px 30px}
  .hero-photograph h1{font-size:clamp(34px,9vw,45px);line-height:1.24}
  .hero-photograph .hero-lede{font-size:14px;line-height:1.75}
  .pressure-placeholder{height:450px}
  .pressure-map{height:345px}
  .reflection-copy>p{font-size:15px}
  .reflection-large-image figcaption strong{font-size:17px}
  .closing{padding-top:76px;padding-bottom:68px}
  .closing h2{font-size:clamp(38px,11vw,55px)}
  .shop-products .shop-product{padding:32px 0}
  .shop-product-copy h3{font-size:31px}
}

/* Material evidence reads first; hardness comparison follows underneath. */
#material .material-layout{
  display:flex;
  flex-direction:column;
  gap:42px;
}
#material .lab-collage{
  width:100%;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
#material .material-copy{
  width:100%;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
}
#material .material-decision,
#material .fine-print{
  grid-column:1 / -1;
}
#material .material-decision{
  padding:18px 20px;
}
@media(max-width:700px){
  #material .lab-collage{grid-template-columns:repeat(2,minmax(0,1fr))}
  #material .material-copy{grid-template-columns:1fr}
  #material .material-decision,
  #material .fine-print{grid-column:auto}
}
@media(max-width:530px){
  #material .material-layout{gap:30px}
  #material .lab-collage{gap:8px}
}
/* Keep the Chinese hero headline from leaving a single orphaned character. */
html[lang="zh-CN"] .hero-photograph h1{font-size:clamp(38px,3.5vw,56px);max-width:520px}
@media(max-width:900px){html[lang="zh-CN"] .hero-photograph h1{font-size:clamp(38px,5.8vw,52px)}}
@media(max-width:530px){html[lang="zh-CN"] .hero-photograph h1{font-size:clamp(33px,8.5vw,43px)}}