@import url('/consent.css');
:root{--navy:#102837;--cream:#faf5ec;--orange:#ffb170;--muted:#bbcbd0;--ink:#102837;--line:#c8d0cf}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--cream);color:var(--ink);font:17px/1.6 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}a{color:inherit;text-underline-offset:4px}button,input,textarea,select{font:inherit}button,a.button{cursor:pointer;border-radius:50px;padding:12px 22px;border:1px solid #617780;text-decoration:none;display:inline-flex;justify-content:center;align-items:center;gap:8px;background:transparent;color:inherit;line-height:1.4}button:hover,a.button:hover{background:var(--orange);color:var(--navy)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #d1641e;outline-offset:4px}button[disabled]{cursor:wait;opacity:.65}button[aria-pressed=true]{background:var(--navy);color:#fff}.primary{background:var(--orange)!important;color:var(--navy)!important;border-color:var(--orange)!important}.shell{max-width:1300px;margin:auto;padding-inline:24px}.site-header{display:flex;align-items:center;justify-content:space-between;padding-block:24px;gap:22px}.brand{text-decoration:none;font-size:22px;letter-spacing:2px;font-weight:850;white-space:nowrap}.site-nav{display:flex;align-items:center;justify-content:flex-end;gap:22px;flex-wrap:wrap;font-size:15px}.site-nav a{text-decoration:none}.motion-toggle{font-size:13px;padding:7px 12px;min-height:36px}h1{font-size:clamp(40px,5.8vw,74px);line-height:1.05;letter-spacing:-2.5px;margin:22px 0}h2{font-size:clamp(28px,3.8vw,42px);line-height:1.14;letter-spacing:-1px;margin:14px 0 20px}h3{font-size:24px;line-height:1.25;margin:10px 0 16px}p{margin:0 0 20px;max-width:700px}.eyebrow,.label{font-size:13px;text-transform:uppercase;letter-spacing:1.8px;font-weight:700}.eyebrow{color:var(--orange)}.label{color:#586969}.hero{background:var(--navy);color:var(--cream);border-radius:28px;overflow:hidden;display:grid;grid-template-columns:1.1fr 1fr}.hero-copy{padding:44px}.hero p{color:var(--muted)}.hero p:last-child{margin:18px 0 0}.photo{overflow:hidden;position:relative;min-height:280px;margin:0}.photo img{width:100%;height:100%;object-fit:cover;animation:life 22s ease-in-out infinite alternate}.photo:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#10283799,transparent 65%);pointer-events:none}.photo figcaption{position:absolute;bottom:18px;left:24px;right:24px;color:white;z-index:1;font-size:13px;line-height:1.4}.small{font-size:14px}.challenge{margin:32px 0 58px;border-block:1px solid var(--line);padding:28px 0;display:flex;justify-content:space-between;align-items:center;gap:28px}.challenge p{margin:0}.challenge h3{margin:5px 0 10px}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end}.section-head p{max-width:370px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:24px 0 60px}.theme{border:1px solid #d4d9d6;border-radius:22px;overflow:hidden;background:white;text-align:left;text-decoration:none;color:var(--navy);display:flex;flex-direction:column}.theme:hover{border-color:#a2683b}.theme .thumb{overflow:hidden;height:175px;position:relative}.theme img{width:100%;height:100%;object-fit:cover;animation:life 26s ease-in-out infinite alternate;animation-delay:-5s}.theme:nth-child(even) img{animation-direction:alternate-reverse;animation-delay:-10s}.theme .body{padding:24px;flex:1}.theme p{margin:0 0 14px}.theme .more{font-size:14px;font-weight:700}.panel{border-radius:24px;background:#e9e5dc;padding:32px;margin:24px 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}.split .panel{margin-top:0}.dark{background:var(--navy);color:var(--cream)}.dark p{color:var(--muted)}.action{background:white;border:1px solid #d4d9d6;padding:26px;border-radius:22px;display:flex;flex-direction:column;scroll-margin-top:24px}.action:target{outline:3px solid #b4662d;outline-offset:3px}.action ol{padding-left:24px;margin:0 0 24px}.action li{padding-left:4px;margin-bottom:13px}.action .controls{margin-top:auto;display:flex;gap:8px;flex-wrap:wrap}.controls button{font-size:14px;padding:10px 14px;min-height:42px}.action-state{font-size:14px;margin:12px 0 0;min-height:23px}.progress{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin:28px 0;padding:20px 24px;border-radius:18px;background:#e9e5dc}.progress p{margin:0}.progress strong{font-size:20px}.text-button{padding:5px 9px;border:0;text-decoration:underline;font-size:14px}.source-list{padding-left:22px}.source-list li{margin:12px 0}.text-page{max-width:860px}.text-page h2{font-size:28px;margin-top:34px}.text-page p{max-width:none}.text-page ul{padding-left:22px}.text-page li{margin:12px 0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-grid label{display:flex;flex-direction:column;gap:7px;font-size:15px;font-weight:600}.form-grid input,.form-grid select,.form-grid textarea{width:100%;padding:12px;border:1px solid #8e9c9f;border-radius:10px;background:#fff;color:#102837;min-width:0}.form-grid textarea{min-height:160px;resize:vertical}.form-grid .wide{grid-column:1/-1}.form-grid label.check{display:flex;flex-direction:row;align-items:flex-start;font-weight:400;gap:12px}.check input{width:20px;height:20px;flex:none;accent-color:#102837;margin-top:3px}.form-status{min-height:24px}.status-error{color:#8b271f}.community-post{background:white;border:1px solid var(--line);padding:24px;border-radius:16px;margin:20px 0}.community-post p{white-space:pre-wrap}.community-post .small{color:#586969}.site-footer{margin-top:60px;padding-top:28px;padding-bottom:30px;border-top:1px solid var(--line);font-size:14px;display:flex;justify-content:space-between;align-items:flex-start;gap:30px}.footer-links{display:flex;gap:15px;flex-wrap:wrap}.site-footer p{max-width:490px}.skip-link{position:absolute;left:20px;top:-100px;background:#102837;color:white;padding:10px;z-index:30}.skip-link:focus{top:10px}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#102837;color:white;border-radius:12px;padding:14px 24px;max-width:90%;width:max-content;z-index:20;box-shadow:0 8px 20px #0003}.share-dialog{width:min(560px,94vw);border:1px solid var(--line);border-radius:22px;padding:28px;background:var(--cream);color:var(--navy)}.share-dialog::backdrop{background:#071b27b3}.share-dialog textarea{width:100%;min-height:170px;padding:14px;border:1px solid #8e9c9f;border-radius:10px;background:#fff}.share-dialog .controls{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.privacy-control{font-size:14px}.review-banner{padding:9px 20px;text-align:center;background:#e9e5dc;font-size:13px}[hidden]{display:none!important}body.paused *,body.backgrounded *{animation-play-state:paused!important}@keyframes life{from{transform:scale(1.01)}to{transform:scale(1.085) translateX(-.8%)}}@media(min-width:1000px){.theme:last-child{grid-column:2}}@media(max-width:950px){.site-header{align-items:flex-start}.brand{font-size:19px}.site-nav{gap:14px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-copy{padding:30px}h1{letter-spacing:-1.8px}.action-grid{grid-template-columns:1fr}.action-grid .action{display:grid;grid-template-columns:1fr 1.3fr;gap:10px 32px}.action-grid .action .intro{grid-column:1}.action-grid .action ol{grid-column:2;grid-row:1/3}.action-grid .action .controls,.action-grid .action .action-state{grid-column:1/-1}}@media(max-width:680px){.site-header{display:block;padding-block:18px}.site-nav{justify-content:flex-start;margin-top:15px;gap:13px;font-size:14px}.motion-toggle{margin-left:auto}.hero,.split{grid-template-columns:1fr}.hero-copy{padding:28px}.photo{height:250px}.grid{grid-template-columns:1fr;gap:18px}.theme .thumb{height:200px}.challenge,.section-head{display:block}.challenge .button{margin-top:20px}.site-footer{flex-direction:column;gap:12px}.panel{padding:24px}.form-grid{grid-template-columns:1fr}.action-grid .action{display:flex}.shell{padding-inline:18px}.progress{padding:18px}.action{padding:23px}.hero h1{font-size:42px}.theme:last-child{grid-column:auto}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

/* Keep the evidence visible between the introduction and practical actions. */
.evidence-summary{margin-top:32px;padding:30px;border:1px solid var(--line);border-radius:24px;background:#fff}
.evidence-heading{display:flex;align-items:center;justify-content:space-between;gap:28px}
.evidence-heading h2{font-size:clamp(25px,3vw,34px);max-width:680px;margin:10px 0 14px}
.evidence-heading p{margin-bottom:0;max-width:650px}
.evidence-heading>.button{flex:none;border-color:var(--navy);white-space:nowrap}
.evidence-topics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));list-style:none;padding:20px 0 0;margin:24px 0 0;border-top:1px solid var(--line);gap:14px}
.evidence-topics a{font-size:15px;font-weight:650;display:block;text-decoration-thickness:1px}
@media(max-width:950px){.evidence-heading{align-items:flex-start;flex-direction:column}.evidence-topics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.evidence-summary{padding:24px}.evidence-topics{grid-template-columns:1fr;gap:12px}}

/* Preserve the complete scene in the four new landscape theme photos. */
.photo.theme-photo{aspect-ratio:var(--image-ratio,16/9);height:auto;min-height:0;align-self:center}

/* Landscape cards keep the science formula and faces inside the visible frame. */
.theme .thumb{height:auto;aspect-ratio:1672/941}
.photo.theme-photo{aspect-ratio:1672/941}

/* Source-linked previews: show the original thumbnail and the complete cover. */
.resource-card{display:flex;flex-direction:column;min-width:0}
.resource-card>h3{overflow-wrap:anywhere}
.resource-figure{margin:20px 0 18px}
.resource-preview{position:relative;display:flex;justify-content:center;align-items:center;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:14px;text-decoration:none;background:#081b25}
.resource-preview>img{display:block;width:100%;height:100%;object-fit:contain}
.video-preview>img{opacity:.93;transition:opacity .2s ease}
.video-preview:hover>img,.video-preview:focus-visible>img{opacity:1}
.preview-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:64px;height:64px;border-radius:50%;background:#ffb170f5;color:#102837;box-shadow:0 4px 22px #0005;pointer-events:none}
.preview-play svg{width:24px;height:24px;margin-left:4px;fill:currentColor}
.preview-label{position:absolute;left:12px;bottom:12px;padding:5px 10px;border-radius:6px;background:#081b25e8;color:#fff;font-size:14px;line-height:1.4}
.resource-credit{font-size:13px;line-height:1.5;margin-top:9px;color:#586969}
.dark .resource-credit{color:#bbcbd0}
.book-preview{background:#f6f0e6;padding:14px}
.book-preview>img{width:auto;height:100%;max-width:100%;object-fit:contain;filter:drop-shadow(4px 5px 4px #1225302b)}
.resource-card>.button,.resource-card>.book-source-link{margin-top:auto;align-self:flex-start}
.resource-card>.resource-note{margin:16px 0 0}
@media(min-width:681px) and (max-width:950px){.resource-pair{grid-template-columns:1fr}}
@media(max-width:680px){.preview-play{width:54px;height:54px}.book-preview{padding:12px}.resource-credit{font-size:13px}}
@media(prefers-reduced-motion:reduce){.video-preview>img{transition:none}}
.preview-fallback{font-size:15px;line-height:1.6;text-align:center;max-width:85%;color:inherit}
.video-preview.media-unavailable{color:#faf5ec}
.video-preview.media-unavailable .preview-play,.video-preview.media-unavailable .preview-label{display:none}
.book-preview.media-unavailable{color:#102837}

/* Practical examples, September 2026 */
.practical-example summary{cursor:pointer;font-weight:700;line-height:1.5;padding:.5rem 0}.practical-example summary:focus-visible{outline:3px solid #f6a86b;outline-offset:4px}.practical-example .example-body{max-width:78ch}.practical-example li{margin:.7rem 0}.practical-example a{overflow-wrap:anywhere}