/* September 2026 revision of the supplied minimalist website.
   Scientific figures, photograph and logo remain their original image files. */
:root {
  --blue: #004b9b;
  --cyan: #00aeef;
  --orange: #ff650b;
  --red: #f80713;
  --warm: #e51d18;
}
.hero { padding-top: 62px; }
.hero-grid { min-height: 470px; grid-template-columns: 1.06fr 1fr; gap: 50px; }
.hero h1 { font-size: clamp(51px, 4.9vw, 68px); line-height: 1.04; }
.hero .eyebrow { font-size: 10px; letter-spacing: .13em; }
.hero .brand-dots { flex: 0 0 25px; }
.hero-description { margin-top: 25px; }
.hero-brand { padding: 15px 0 0 10px; }
.hero-brand-caption { margin-top: 26px; }
.journey { margin-top: 45px; }
.section { padding: 94px 0; }
.section-label { margin-bottom: 37px; }
.effect-grid { grid-template-columns: .81fr 1.2fr; gap: 65px; align-items: start; }
.effect-grid h2 { font-size: clamp(36px, 3.3vw, 48px); margin-top: 15px; }
.effect-grid .section-copy { position: sticky; top: 160px; }
.effect-grid .section-copy p { max-width: 435px; }
.effect-grid .section-copy .lead { font-size: 22px; }

/* A diagram built as semantic page content: it cannot invent research imagery. */
.material-cycle { min-width: 0; }
.cycle-topline { min-height: 38px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 19px; }
.cycle-topline .small-label { font-size: 9px; letter-spacing: .12em; color: var(--muted); }
.cycle-play { border: 0; background: none; color: var(--blue); padding: 5px 0 5px 8px; font-size: 12px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.cycle-play[hidden] { display: none; }
.play-symbol { font-size: 10px; margin-right: 5px; }
.material-stages { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; position: relative; }
.material-stage { position: relative; border: 1px solid var(--line); border-radius: 5px; padding: 18px 18px 17px; background: #fff; transition: border-color .25s, box-shadow .25s; --stage-colour: var(--warm); min-width: 0; }
.stage-1,.stage-2 { background: linear-gradient(180deg, #fff8f4 0%, #fff 60%); }
.stage-3,.stage-4 { --stage-colour: var(--blue); background: linear-gradient(180deg, #f2f9ff 0%, #fff 60%); }
.stage-3 { grid-column: 2; grid-row: 2; }
.stage-4 { grid-column: 1; grid-row: 2; }
.material-stage::after { position: absolute; display: grid; place-items: center; color: #8492a2; font-size: 22px; width: 32px; height: 32px; line-height: 1; font-family: Arial, Helvetica, sans-serif; }
.stage-1::after { content: '→'; right: -33px; top: calc(50% - 16px); }
.stage-2::after { content: '↓'; left: calc(50% - 16px); bottom: -33px; }
.stage-3::after { content: '←'; left: -33px; top: calc(50% - 16px); }
.stage-4::after { content: '↑'; left: calc(50% - 16px); top: -33px; }
.stage-heading { display: flex; align-items: center; gap: 10px; }
.stage-heading h3 { font-size: 18px; letter-spacing: -.02em; }
.stage-badge { width: 25px; height: 25px; background: #fff; color: var(--stage-colour); border: 1px solid #dfccc5; border-radius: 50%; display: inline-grid; place-items: center; font-size: 10px; font-weight: 600; flex-shrink: 0; }
.stage-3 .stage-badge,.stage-4 .stage-badge { border-color: #bdd4e8; }
.material-visual { position: relative; height: 158px; width: min(100%, 235px); margin: 8px auto 7px; }
.platen { position: absolute; left: 50%; transform: translateX(-50%); width: 118px; height: 16px; background: linear-gradient(105deg, #687584 0%, #ccd3d9 25%, #f5f7f9 41%, #929eaa 78%, #63717f 100%); border: 1px solid #778594; box-shadow: 0 2px 0 #5e6c7b; z-index: 3; }
.platen::before { content: ''; position: absolute; height: 3px; left: 1px; right: 1px; top: 0; background: #eef2f5; opacity: .85; }
.compressed .top-platen { top: 35px; }
.compressed .bottom-platen { top: 105px; }
.released .top-platen { top: 24px; }
.released .bottom-platen { top: 116px; }
.metal-sample { position: absolute; left: 50%; transform: translateX(-50%); width: 74px; border: 1px solid #788795; background: linear-gradient(90deg, #5c6b79 0%, #9aa7b2 15%, #e6ebee 44%, #b7c1c9 63%, #657784 100%); overflow: hidden; z-index: 2; }
.metal-sample::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, #ffffff00 0%, #ffffff1f 30%, #ffffff60 46%, #ffffff00 64%), repeating-linear-gradient(90deg, transparent 0 8px, #ffffff13 8px 9px); }
.compressed .metal-sample { top: 51px; height: 55px; width: 79px; }
.released .metal-sample { top: 40px; height: 77px; }
.thermal-tint { position: absolute; inset: 0; }
.hot .thermal-tint { background: linear-gradient(90deg, #ef2418 0%, #ff842c 48%, #f80713 100%); opacity: .86; }
.rejecting .thermal-tint { background: linear-gradient(90deg, #fb5529, #ff9a44, #f22b20); opacity: .24; }
.cold .thermal-tint { background: linear-gradient(90deg, #004b9b, #00aeef 50%, #0368b6); opacity: .92; }
.absorbing .thermal-tint { background: linear-gradient(90deg, #004b9b, #00aeef 50%, #0368b6); opacity: .18; }
.force-arrow { position: absolute; width: 3px; height: 23px; left: calc(50% - 1.5px); background: #48586b; }
.force-arrow::after { content: ''; position: absolute; left: -4px; width: 0; height: 0; border-left: 5.5px solid transparent; border-right: 5.5px solid transparent; }
.compressed .force-top { top: 6px; }
.compressed .force-top::after { bottom: -1px; border-top: 7px solid #48586b; }
.compressed .force-bottom { top: 128px; }
.compressed .force-bottom::after { top: -1px; border-bottom: 7px solid #48586b; }
.released .force-top { top: -1px; height: 20px; }
.released .force-top::after { top: -1px; border-bottom: 7px solid #48586b; }
.released .force-bottom { top: 137px; height: 20px; }
.released .force-bottom::after { bottom: -1px; border-top: 7px solid #48586b; }
.heat-flow { position: absolute; top: 61px; font-size: 26px; line-height: 18px; font-weight: 600; color: var(--orange); }
.heat-left { right: calc(50% + 45px); }
.heat-right { left: calc(50% + 45px); }
.absorbing .heat-flow { color: #0288ce; top: 60px; line-height: 23px; }
.heat-label { position: absolute; bottom: 0; width: 100%; text-align: center; font-size: 10px; text-transform: uppercase; letter-spacing: .09em; color: var(--muted); }
.material-stage .thermal-state { color: var(--stage-colour); font-size: 12px; font-weight: 600; line-height: 1.45; margin: 0 0 7px; }
.material-stage .stage-description { font-size: 13px; color: var(--muted); line-height: 1.55; margin: 0; }
.cycle-repeat { display: flex; justify-content: center; align-items: center; gap: 8px; border-bottom: 1px solid var(--line); padding: 14px 0; font-size: 12px; color: var(--muted); }
.cycle-repeat > span { font-size: 24px; color: var(--blue); }
.material-cycle .explainer-note { font-size: 11px; margin-top: 12px; }
.material-stage.is-current { border-color: var(--stage-colour); box-shadow: 0 0 0 1px var(--stage-colour); }
.material-stage.is-current .stage-badge { color: #fff; background: var(--stage-colour); border-color: var(--stage-colour); }
.cycle-playing .stage-1.is-current .metal-sample { animation: compress-metal 3.2s ease-in-out both; }
.cycle-playing .stage-1.is-current .top-platen { animation: compress-top 3.2s ease-in-out both; }
.cycle-playing .stage-1.is-current .bottom-platen { animation: compress-bottom 3.2s ease-in-out both; }
.cycle-playing .stage-1.is-current .thermal-tint { animation: heating-tint 3.2s ease-in-out both; }
.cycle-playing .stage-2.is-current .thermal-tint { animation: reject-tint 3.2s ease-in-out both; }
.cycle-playing .stage-3.is-current .metal-sample { animation: release-metal 3.2s ease-in-out both; }
.cycle-playing .stage-3.is-current .top-platen { animation: release-top 3.2s ease-in-out both; }
.cycle-playing .stage-3.is-current .bottom-platen { animation: release-bottom 3.2s ease-in-out both; }
.cycle-playing .stage-3.is-current .thermal-tint { animation: cooling-tint 3.2s ease-in-out both; }
.cycle-playing .stage-4.is-current .thermal-tint { animation: absorb-tint 3.2s ease-in-out both; }
@keyframes compress-metal { from { top: 40px; height: 77px; width: 74px; } to { top: 51px; height: 55px; width: 79px; } }
@keyframes compress-top { from { top: 24px; } to { top: 35px; } }
@keyframes compress-bottom { from { top: 116px; } to { top: 105px; } }
@keyframes release-metal { from { top: 51px; height: 55px; width: 79px; } to { top: 40px; height: 77px; width: 74px; } }
@keyframes release-top { from { top: 35px; } to { top: 24px; } }
@keyframes release-bottom { from { top: 105px; } to { top: 116px; } }
@keyframes heating-tint { from { opacity: 0; } to { opacity: .86; } }
@keyframes reject-tint { from { opacity: .86; } to { opacity: 0; } }
@keyframes cooling-tint { from { opacity: 0; } to { opacity: .92; } }
@keyframes absorb-tint { from { opacity: .92; } to { opacity: 0; } }

/* Both supplied scientific figures, now in one continuous section. */
.regenerator-heading { grid-template-columns: 1fr 1fr; gap: 70px; margin-bottom: 36px; }
.regenerator-heading h2 { font-size: clamp(36px, 3.3vw, 48px); }
.regenerator-heading .lead { color: var(--ink); margin-bottom: 15px; max-width: none; }
.regenerator-intro { color: var(--muted); font-size: 16px; margin: 0; }
.research-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; scroll-margin-top: calc(var(--header) + 25px); }
.figure-heading { font-size: 12px; font-weight: 600; color: var(--ink); letter-spacing: .01em; margin-bottom: 13px; }
.research-pair .figure-open { padding: 24px; background: #fff; }
.research-pair .figure-open img { height: 410px; width: 100%; object-fit: contain; }
.research-pair .enlarge-label { opacity: 1; font-size: 10px; }
.research-pair figcaption { font-size: 11px; }
.research-pair .caption-note { font-size: 11px; }
.regenerator-features { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 34px; margin-top: 38px; border-top: 1px solid var(--line); padding-top: 30px; }
.regenerator-feature { display: flex; gap: 14px; }
.regenerator-feature .feature-index { width: 26px; height: 26px; font-size: 10px; }
.regenerator-feature h3 { font-size: 17px; letter-spacing: -.02em; margin-bottom: 10px; }
.regenerator-feature p { font-size: 14px; line-height: 1.65; color: var(--muted); margin: 0; }
.regenerator-note { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 35px; }
.regenerator-note p { font-size: 12px; color: var(--muted); margin: 0; max-width: 720px; }
.regenerator-note > span { color: var(--blue); font-size: 11px; white-space: nowrap; }
.schematic-credit { border-top: 1px solid var(--line); padding: 20px 0; }
.schematic-credit h3 { font-size: 15px; margin-bottom: 8px; }
.schematic-credit p { font-size: 12px; color: var(--muted); margin: 0; }
.contact-section h2 { font-size: clamp(34px, 3.8vw, 51px); }
.email-link { overflow-wrap: anywhere; }

@media (max-width: 1100px) {
 .effect-grid { grid-template-columns: .8fr 1.2fr; gap: 34px; }
 .stage-heading h3 { font-size: 16px; }
 .material-stage { padding: 16px 14px; }
 .material-stage .stage-description { font-size: 12px; }
 .research-pair { gap: 28px; }
 .research-pair .figure-open img { height: 335px; }
}
@media (max-width: 980px) {
 .hero h1 { font-size: clamp(45px, 6vw, 59px); }
 .hero .eyebrow { font-size: 9px; max-width: 340px; align-items: baseline; }
 .hero-brand-caption { font-size: 8px; }
 .effect-grid { grid-template-columns: 1fr; gap: 35px; }
 .effect-grid .section-copy { position: static; display: block; max-width: 640px; }
 .effect-grid .section-copy p { max-width: 610px; }
 .effect-grid .section-copy h2 { margin-top: 0; }
 .effect-grid .section-copy .quiet-note { margin: 25px 0 15px; }
 .material-stage { padding: 20px 24px; }
 .stage-heading h3 { font-size: 20px; }
 .material-stage .stage-description { font-size: 14px; }
 .material-cycle { max-width: 760px; }
 .regenerator-heading { gap: 35px; }
 .regenerator-features { gap: 24px; }
 .regenerator-feature h3 { font-size: 15px; }
 .regenerator-feature p { font-size: 13px; }
 .research-pair .figure-open img { height: 280px; }
}
@media (max-width: 700px) {
 .hero { padding-top: 34px; }
 .hero-grid { gap: 12px; min-height: 0; grid-template-columns: 1fr; }
 .hero h1 { font-size: clamp(39px, 10.7vw, 61px); }
 .hero .eyebrow { font-size: 8px; letter-spacing: .105em; align-items: center; max-width: none; }
 .hero-brand { width: min(290px, 86%); padding: 20px 0 0; }
 .hero-brand-caption { margin-top: 18px; }
 .hero-description { font-size: 19px; }
 .journey { margin-top: 30px; }
 .section { padding: 64px 0; }
 .section-label { margin-bottom: 29px; }
 .effect-grid h2 { font-size: clamp(34px, 8.6vw, 43px); }
 .effect-grid .section-copy .lead { font-size: 20px; }
 .effect-grid .section-copy .quiet-note { font-size: 13px; }
 .cycle-topline { flex-wrap: wrap; gap: 6px 12px; }
 .cycle-topline .small-label { font-size: 8px; }
 .cycle-play { font-size: 11px; min-height: 35px; }
 .material-stages { gap: 25px; }
 .material-stage { padding: 13px 10px 14px; }
 .stage-heading { gap: 7px; }
 .stage-heading h3 { font-size: 15px; }
 .stage-badge { width: 22px; height: 22px; font-size: 9px; }
 .material-visual { transform: scale(.82); margin: -5px auto -5px; width: 100%; }
 .material-stage .thermal-state { font-size: 11px; min-height: 31px; margin-bottom: 6px; }
 .material-stage .stage-description { font-size: 12px; }
 .material-stage::after { width: 25px; height: 25px; font-size: 20px; }
 .stage-1::after { right: -26px; }
 .stage-2::after { bottom: -26px; }
 .stage-3::after { left: -26px; }
 .stage-4::after { top: -26px; }
 .material-cycle .explainer-note { font-size: 10px; }
 .regenerator-heading h2 { font-size: clamp(34px, 8.6vw, 43px); }
 .regenerator-heading { margin-bottom: 28px; }
 .regenerator-intro { font-size: 15px; }
 .research-pair { grid-template-columns: 1fr; gap: 30px; }
 .research-pair .figure-open { padding: 20px; }
 .research-pair .figure-open img { height: auto; max-height: 420px; object-fit: contain; }
 .figure-heading { font-size: 12px; }
 .regenerator-features { grid-template-columns: 1fr; margin-top: 28px; gap: 22px; padding-top: 24px; }
 .regenerator-feature h3 { font-size: 17px; }
 .regenerator-feature p { font-size: 14px; }
 .regenerator-note { display: block; margin-top: 26px; padding-top: 20px; }
 .regenerator-note p { font-size: 11px; margin-bottom: 13px; }
 .contact-section h2 { font-size: clamp(34px, 8.6vw, 43px); }
 .contact-section .section-label { margin-bottom: 29px; }
}
@media (max-width: 380px) {
 .material-stages { grid-template-columns: 1fr; gap: 28px; }
 .material-stage { grid-column: 1; grid-row: auto; padding: 17px; }
 .stage-heading h3 { font-size: 19px; }
 .material-visual { transform: none; margin: 5px auto; }
 .material-stage .thermal-state { min-height: 0; font-size: 12px; }
 .material-stage .stage-description { font-size: 13px; }
 .material-stage::after { content: '↓'; left: calc(50% - 13px); top: auto; right: auto; bottom: -27px; }
 .stage-4::after { content: ''; }
 .cycle-topline .small-label { max-width: 160px; }
}
@media (prefers-reduced-motion: reduce) {
 .material-stage, .material-stage * { animation: none !important; transition: none !important; }
}
@media print {
 .cycle-play { display: none; }
 .effect-grid .section-copy { position: static; }
 .material-stage,.research-figure { break-inside: avoid; }
 .research-pair .figure-open img { height: 250px; }
}