:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:dark;--bg:#071224;--panel:#0c1d34;--card:#11253c;--surface:#172f47;--line:#29465c;--ink:#f1f9ff;--sub:#a8c0d0;--mint:#68e7bb;--blue:#75b9e8;--pink:#f4a8c4;--gold:#f7d48b;--shadow:0 18px 50px #0005;--radius:18px}
html[data-theme="light"]{color-scheme:light;--bg:#f3f9f7;--panel:#fff;--card:#f4faf9;--surface:#e8f4ef;--line:#cddfdc;--ink:#152d38;--sub:#4d6770;--mint:#0a8769;--blue:#216eae;--pink:#a53369;--gold:#865b11;--shadow:0 18px 36px #194a3915}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--mint);outline-offset:3px}h1,h2,h3,h4,p{margin-top:0}h1{font-size:clamp(2.7rem,6vw,5.2rem);line-height:1.04;letter-spacing:-.06em}h2{font-size:clamp(1.9rem,3vw,2.6rem);letter-spacing:-.045em}h3{font-size:1.22rem}p{line-height:1.65}small,.muted{color:var(--sub)}main{max-width:1280px;margin:auto;padding:30px 26px 90px;min-height:calc(100dvh - 180px)}.skip{position:absolute;top:-90px;left:12px;padding:12px;background:var(--mint);color:#041b19;z-index:100}.skip:focus{top:8px}.sitehead{position:sticky;z-index:40;top:0;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 93%,transparent);backdrop-filter:blur(18px)}.topbar{max-width:1280px;margin:auto;display:flex;align-items:center;gap:19px;padding:12px 26px;min-height:74px}.brand{display:flex;align-items:center;gap:11px;white-space:nowrap;font-size:.95rem;font-weight:850;letter-spacing:-.025em;text-decoration:none}.brand .brand-icon{height:39px;width:39px;border:2px solid var(--mint);color:var(--mint);border-radius:13px;display:grid;place-items:center;font-size:25px;box-shadow:0 0 28px #5aeba729}.brand em{font-style:normal;color:var(--mint)}.nav{display:flex;gap:3px;overflow-x:auto;align-items:center;margin-left:auto;scrollbar-width:none}.nav a{font-size:.84rem;white-space:nowrap;text-decoration:none;color:var(--sub);padding:9px 11px;border-radius:9px}.nav a:hover,.nav a.active{background:var(--surface);color:var(--ink)}.themebtn,.iconbtn{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:10px 14px}.themebtn{margin-left:4px;white-space:nowrap}.tag{display:inline-flex;align-items:center;gap:7px;text-transform:uppercase;font-size:.67rem;letter-spacing:.15em;font-weight:850;color:var(--mint);padding:8px 10px;border:1px solid color-mix(in srgb,var(--mint) 32%,transparent);background:color-mix(in srgb,var(--mint) 7%,transparent);border-radius:999px}.tag.warning{color:var(--gold);border-color:#cea95765}.hero{position:relative;overflow:hidden;min-height:475px;display:flex;align-items:center;border:1px solid var(--line);border-radius:28px;padding:clamp(25px,5vw,62px);background:radial-gradient(circle at 78% 27%,#13536788,transparent 30%),radial-gradient(circle at 82% 87%,#4b2e6960,transparent 30%),linear-gradient(124deg,#091a34,#102740 65%,#092033);color:#f1f9ff;box-shadow:var(--shadow)}.hero-copy{position:relative;z-index:3;max-width:700px}.hero h1 span{color:#6aebc0}.hero p{color:#c9dfe9;max-width:560px;font-size:1.08rem}.hero-art{position:absolute;right:-70px;top:0;bottom:0;width:48%;opacity:.83;overflow:hidden;pointer-events:none}.helix{width:280px;height:430px;position:absolute;right:100px;top:14px;transform:rotate(-22deg)}.helix:before,.helix:after{content:'';position:absolute;left:50%;width:130px;height:100%;border:13px solid #75dabc;border-radius:50%;transform:translateX(-50%) rotateY(62deg);filter:drop-shadow(0 0 15px #31e6c5aa)}.helix:after{border-color:#b899ff;transform:translateX(-50%) rotateY(-62deg)}.orbit{position:absolute;border:1px solid #81dac659;border-radius:50%;width:390px;height:390px;right:40px;top:28px;box-shadow:0 0 55px #28dfcf20 inset}.orbit:after{content:'✦';position:absolute;top:34px;left:26px;font-size:37px;color:#a8f4d0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;border-radius:12px;font-weight:750;font-size:.91rem;line-height:1.2;padding:13px 18px;border:1px solid var(--line);background:var(--surface);color:var(--ink);transition:transform .15s,background .15s}.btn:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.09)}.btn.primary{background:#65edbd;color:#08251b;border-color:#65edbd}.btn.accent{background:#256f85;color:white;border-color:#468ca0}.btn.subtle{background:transparent}.btn.small{padding:8px 11px;font-size:.81rem}.actions{display:flex;flex-wrap:wrap;gap:11px;margin:24px 0 0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:28px 0 42px}.stat{border:1px solid var(--line);border-radius:17px;padding:18px 20px;background:var(--panel)}.stat strong{display:block;color:var(--mint);font-size:2rem;letter-spacing:-.04em}.stat span{font-size:.86rem;color:var(--sub)}.section{margin:38px 0}.sectionlead{display:flex;align-items:end;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:20px}.sectionlead p{max-width:660px;margin:5px 0 0;color:var(--sub)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 7px 25px #0000000b}.card h3{margin:10px 0 10px}.card p{font-size:.92rem;color:var(--sub)}.card .emoji{font-size:2.3rem;display:block}.card .foot{margin-top:15px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.card .smalllabel{color:var(--mint);font-size:.73rem;letter-spacing:.1em;text-transform:uppercase;font-weight:800}.card .btn{margin-top:9px}.panel{background:var(--panel);border:1px solid var(--line);padding:24px;border-radius:var(--radius);margin:18px 0}.titleline{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap}.bread{display:block;color:var(--sub);font-size:.88rem;margin:6px 0 20px}.bread a{color:var(--mint)}.notice{border:1px solid #b5a27455;border-radius:12px;padding:14px 18px;color:var(--sub);background:color-mix(in srgb,var(--gold) 5%,transparent);font-size:.89rem;line-height:1.55;margin:16px 0}.notice strong{color:var(--ink)}.highlight{color:var(--mint)}.intro{font-size:1.05rem;color:var(--sub);max-width:820px}.pillrow{display:flex;flex-wrap:wrap;gap:8px}.pill{border:1px solid var(--line);border-radius:20px;padding:7px 10px;font-size:.8rem;background:var(--surface);color:var(--sub)}details{background:var(--panel);border:1px solid var(--line);border-radius:13px;margin:11px 0;overflow:hidden}details summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;font-weight:760;padding:17px 19px}details summary::-webkit-details-marker{display:none}details summary:after{content:'＋';font-size:1.3rem;color:var(--mint)}details[open] summary:after{content:'−'}details .detailsbody{padding:0 20px 20px;color:var(--sub)}.detailsbody p,.detailsbody ul{line-height:1.7}ul{line-height:1.7}.toolbar{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin:16px 0}.field{display:flex;flex-direction:column;gap:9px;margin:14px 0}.field label{font-size:.88rem;color:var(--sub);font-weight:700}input:not([type=range]),select,textarea{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:11px;padding:13px 14px;max-width:100%;min-height:43px}textarea{min-height:100px;resize:vertical;width:100%}select{max-width:100%;min-width:170px}input[type=range]{accent-color:var(--mint);width:100%;cursor:pointer}.viewer-layout{display:block}.viewport{position:relative;background:radial-gradient(circle at 55% 44%,#163351,#061326 63%);border-radius:18px;overflow:hidden;border:1px solid #2a5263;width:100%;height:clamp(380px,55vw,570px);touch-action:none}.viewport canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}.viewport canvas:active{cursor:grabbing}.viewport:after{content:'GEOMETRIA 3D DIDÀCTICA · NO A ESCALA';position:absolute;left:16px;bottom:13px;font-size:.63rem;letter-spacing:.09em;color:#bad4de9a;pointer-events:none}.viewport .corner{position:absolute;top:16px;left:16px;color:#afcbd6;font-size:.77rem;z-index:3;pointer-events:none}.partinfo{background:var(--card);border:1px solid var(--line);padding:16px 18px;border-radius:12px;min-height:94px}.partinfo h3{color:var(--mint);margin:0 0 7px}.partinfo p{margin:0}.viewer-controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0 16px}.viewer-controls .btn{padding:10px 12px}.canvas-fallback{padding:42px 20px;text-align:center;color:#d8edf1}.plot{width:100%;height:auto;max-height:240px}.report{padding:20px;border-left:4px solid var(--mint);background:var(--card);border-radius:10px}.lab-grid{display:grid;grid-template-columns:minmax(240px,330px) 1fr;gap:22px;align-items:start}.result-big{font-size:3rem;color:var(--mint);font-weight:850;line-height:1.15}.param label{display:flex;justify-content:space-between;gap:12px}.param output{color:var(--mint);font-weight:800}.progress{height:11px;width:100%;background:var(--surface);border-radius:20px;overflow:hidden;margin:17px 0}.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--mint),#75afe4);transition:width .25s}.quizoptions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0}.quizoptions button{background:var(--card);border:1px solid var(--line);color:var(--ink);text-align:left;padding:14px;border-radius:12px;min-height:54px}.quizoptions button:hover,.quizoptions button.selected{border-color:var(--mint);background:var(--surface)}.feedback{border-left:4px solid var(--gold);padding:13px 18px;background:var(--surface);border-radius:8px;margin:12px 0}.feedback.ok{border-color:var(--mint)}.challengetype{font-size:.72rem;text-transform:uppercase;color:var(--mint);letter-spacing:.13em;font-weight:750}.microscope{width:100%;height:auto;max-height:250px;border-radius:14px;background:#ebf9e9}.question{font-size:1.24rem;font-weight:740;line-height:1.5}.glosscard h3{margin:0 0 8px;color:var(--mint)}.glosscard .smalllabel{display:inline-block;margin-bottom:12px}.chat-launch{position:fixed;right:23px;bottom:23px;z-index:90;display:flex;gap:8px;align-items:center;padding:15px 20px;background:#6af0be;border:1px solid #8ff5d2;box-shadow:0 10px 30px #0006;color:#073025;border-radius:100px;font-weight:850}.chatbox{position:fixed;right:24px;bottom:89px;z-index:85;width:min(390px,calc(100vw - 25px));height:min(560px,calc(100dvh - 120px));background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:0 25px 90px #0008;display:flex;flex-direction:column;overflow:hidden}.chathead{padding:15px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px}.chathead strong{color:var(--mint)}.chatlog{flex:1;overflow:auto;padding:15px;display:flex;flex-direction:column;gap:9px}.bubble{max-width:95%;padding:11px 14px;border-radius:15px;background:var(--surface);font-size:.88rem;line-height:1.55;overflow-wrap:anywhere}.bubble.mine{align-self:flex-end;background:color-mix(in srgb,var(--mint) 20%,var(--surface))}.chatinput{padding:13px;border-top:1px solid var(--line);display:flex;gap:7px}.chatinput input{flex:1;min-width:0}.chatsettings{padding:8px 13px;border-top:1px solid var(--line);font-size:.75rem;color:var(--sub)}.chatsettings select{font-size:.78rem;padding:6px;min-height:28px}.chatbtn{background:var(--mint);color:var(--bg);border:0;border-radius:10px;padding:0 14px;font-weight:800}.chatbox[hidden]{display:none}.sitefoot{border-top:1px solid var(--line);padding:30px 24px;text-align:center;color:var(--sub);font-size:.85rem}.sitefoot strong{color:var(--ink)}.footlinks{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;margin-top:10px}.footlinks a{color:var(--mint)}.steps{display:grid;grid-template-columns:repeat(15,1fr);gap:5px;margin:16px 0}.steps span{height:7px;border-radius:5px;background:var(--line)}.steps span.done{background:var(--mint)}.steps span.current{background:var(--gold)}.codeword{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--surface);border:1px solid var(--line);padding:12px 16px;border-radius:10px;letter-spacing:.15em;font-size:1.2rem}.orderitem{display:flex;align-items:center;gap:12px;justify-content:space-between;padding:13px;background:var(--surface);border:1px solid var(--line);border-radius:10px;margin:8px 0}.orderitem strong{flex:1}.printable{background:var(--card);border:1px dashed var(--line);border-radius:12px;padding:20px}.loading{padding:80px;text-align:center}.count{font-variant-numeric:tabular-nums;color:var(--mint)}
@media(max-width:1130px){.nav{width:100%;order:3;margin-left:0}.topbar{flex-wrap:wrap}.themebtn{margin-left:auto}.nav a{padding:7px 9px}.hero-art{width:40%;opacity:.54}.helix{right:0}}
@media(max-width:760px){main{padding:18px 14px 60px}.topbar{padding:11px 15px}.hero{padding:30px 23px;min-height:460px}.hero-art{opacity:.18;width:90%}.hero h1{font-size:3rem}.stats{grid-template-columns:repeat(2,1fr);gap:9px}.stat{padding:13px}.grid,.grid.two,.grid.four{grid-template-columns:1fr}.lab-grid{grid-template-columns:1fr}.panel{padding:18px}.viewport{height:400px}.quizoptions{grid-template-columns:1fr}.nav{padding-bottom:3px}.brand{font-size:.86rem}.chat-launch{right:12px;bottom:14px}.chatbox{right:9px;bottom:76px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}@media print{.sitehead,.chat-launch,.chatbox,.viewer-controls,.actions{display:none!important}body{background:#fff;color:#000}.card,.panel{box-shadow:none}main{padding:0}}
/* Components de suport per a l'aplicació executable */
.pageh1{font-size:clamp(2.1rem,4.5vw,3.65rem);margin:14px 0 18px;line-height:1.12}
.hero-meta{font-size:.77rem!important;opacity:.8;margin-top:24px}
.tablewrap{width:100%;overflow-x:auto;margin:14px 0}
table{width:100%;border-collapse:collapse;text-align:left;font-size:.87rem;min-width:480px}
th,td{border-bottom:1px solid var(--line);padding:13px 12px;vertical-align:top}
th{color:var(--mint);font-size:.8rem;letter-spacing:.025em}
.unit-card[hidden],.glosscard[hidden]{display:none}
.tiny{font-size:.78rem;color:var(--sub);display:block;margin:8px 0}
.tiny input{accent-color:var(--mint)}
.term-btn{margin:4px 6px 4px 0}
#bot-config{display:block;max-height:210px;overflow:auto;margin:8px 0}
#bot-config[hidden]{display:none}
#bot-config input{width:100%;font-size:.8rem}
#bot-config p{font-size:.72rem;line-height:1.4}
#bot-config .field{margin:5px 0}
code{font-family:ui-monospace,Consolas,monospace}
@media(max-width:760px){.pageh1{font-size:2.15rem}.hero{min-height:400px}.hero h1{font-size:2.8rem}.hero-copy{width:100%}}

/* Life Explorer v3: visor, capes i pràctiques que no depenen d'un servidor. */
.anatomy-layers{background:var(--surface);padding:14px 18px;border:1px solid var(--line);border-radius:15px;margin:12px 0 17px}
.anatomy-layers strong{font-size:.95rem;color:var(--ink)}
.anatomy-layers .viewer-controls{margin:10px 0 0}
[data-layer][aria-pressed="true"]{background:var(--mint);color:var(--bg);border-color:var(--mint);font-weight:850}
.atlas-mission{margin:20px 0;background:linear-gradient(125deg,var(--panel),var(--surface));border:1px solid var(--line)}
.atlas-mission .question{font-size:1.08rem}
.atlas-mission #atlas-feedback{margin:12px 0;color:var(--sub)}
.import-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;align-items:end}
.import-form .field{margin:0}
.import-form button{min-height:48px}
.import-form input[type=file]{width:100%;border:1px dashed var(--mint);padding:14px;cursor:pointer}
#import-display,#pdb-display{margin-top:36px}
#model-status,#pdb-status{display:block;margin-top:17px;max-width:100%;overflow-wrap:anywhere}
.viewport:after{content:'MODEL DIDÀCTIC O MALLA IMPORTADA · CONSULTA LA FITXA DE FIDELITAT';max-width:calc(100% - 35px)}
@media(max-width:760px){.import-form{grid-template-columns:1fr}.atlas-mission{padding:16px}}
/* v4 · 3D extern de recerca: zona pròpia en català i consentiment explícit */
.real-atlas-hero{border-radius:24px;padding:clamp(24px,5vw,55px);background:linear-gradient(120deg,#092d41 0%,#0a3945 50%,#1a2757 100%);color:#f1fffc;border:1px solid #447f83;margin:18px 0 30px}
.real-atlas-hero .pageh1{color:#f0fff9;margin:14px 0}.real-atlas-hero .intro{color:#d4ebe9;max-width:850px}.real-atlas-hero .btn:not(.primary){color:#f3fffd;border-color:#7fa6b2;background:#ffffff14}
.real-atlas-shell{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:clamp(13px,2.2vw,25px);margin:22px 0 35px}
.real-atlas-heading{display:flex;gap:15px;align-items:flex-start;justify-content:space-between}.real-atlas-heading h2{margin:0 0 8px}.real-atlas-heading p{color:var(--sub);max-width:830px;margin:0 0 19px;line-height:1.6}
.real-atlas-frame{min-height:360px;background:linear-gradient(140deg,#071b2b,#11354c);border-radius:17px;overflow:hidden;border:1px solid #43657a;color:#eafafc}
.real-atlas-consent{text-align:center;margin:auto;max-width:570px;padding:43px 28px}.real-atlas-consent h3{font-size:1.5rem;margin:6px 0 10px}.real-atlas-consent p{color:#d1e4ed;line-height:1.6}
.real-atlas-symbol{font-size:5rem;color:#78e6c6;line-height:1.1}
.real-atlas-frame iframe{width:100%;height:min(72vh,750px);min-height:440px;border:0;display:block;background:#fff}
.real-frame-toolbar{padding:13px 18px;background:#081927;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.real-frame-toolbar p{margin:0;color:#d5e4ec;font-size:.83rem;flex:1}.real-frame-toolbar .btn{color:#eafffb;border-color:#689aab}
.real-library-card{display:flex;flex-direction:column;align-items:flex-start;gap:7px}.real-library-card .toolbar{margin-top:auto}.real-library-card .pill{font-size:.73rem}
.real-license{color:var(--sub);margin:10px 0;font-size:.8rem;padding-top:10px;border-top:1px solid var(--line)}.real-license p{font-size:.78rem;margin:5px 0}
.real-lab{max-width:none}.real-lab .quizoptions{max-width:780px}.real-lab #real-quiz-feedback{line-height:1.65}.real-lab button[hidden]{display:none}
@media (max-width:760px){.real-atlas-heading{flex-direction:column}.real-atlas-consent{padding:30px 17px}.real-atlas-frame iframe{height:540px}.real-frame-toolbar{align-items:flex-start;flex-direction:column}}
/* SEO v5 · pàgines HTML reals sense JS, amb la mateixa identitat visual */
.seo-main{max-width:1120px}.seo-bread{margin:12px 0 24px;font-size:.85rem;color:var(--sub)}.seo-bread a{color:var(--mint);text-decoration:none}.seo-bread span{margin:0 8px}.seo-intro{margin:24px 0 35px;padding:36px clamp(18px,4vw,48px);border:1px solid var(--line);border-radius:23px;background:linear-gradient(125deg,var(--panel),var(--surface))}.seo-intro h1{font-size:clamp(2.15rem,5vw,3.55rem);line-height:1.13;margin:15px 0}.seo-intro>p{font-size:1.06rem;color:var(--sub);max-width:790px}.seo-section{margin:34px 0;padding-bottom:13px;border-bottom:1px solid var(--line)}.seo-section h2{font-size:clamp(1.35rem,2.7vw,2rem);letter-spacing:-.03em}.seo-section p{max-width:920px;color:var(--sub)}.seo-section a:not(.btn){color:var(--mint)}.seo-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,270px),1fr));gap:14px;margin:20px 0 26px}.seo-card{background:var(--card);border:1px solid var(--line);border-radius:15px;padding:20px}.seo-card h3{font-size:1.09rem;margin:0 0 9px}.seo-card h3 a{color:var(--ink)!important}.seo-card p{margin:0;font-size:.91rem}.seo-list{padding-left:24px;line-height:1.9;color:var(--sub)}.seo-glossary{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,310px),1fr));gap:13px}.seo-glossary>div,.seo-questions>div{padding:17px;background:var(--card);border:1px solid var(--line);border-radius:12px}.seo-glossary dt,.seo-questions dt{font-weight:780;color:var(--ink);margin-bottom:7px}.seo-glossary dd,.seo-questions dd{margin:0;color:var(--sub);line-height:1.6;font-size:.94rem}.seo-example{display:block;margin-top:6px;font-size:.86rem}.seo-questions{display:grid;gap:13px}.seo-fallback{max-width:1200px;margin:0 auto;padding:26px}.seo-fallback .seo-intro{margin-top:0}.seo-fallback+.loading{display:none}.seo-main .btn{margin:6px 9px 6px 0}@media(prefers-color-scheme:light){html:not([data-theme]){color-scheme:light;--bg:#f3f9f7;--panel:#fff;--card:#f4faf9;--surface:#e8f4ef;--line:#cddfdc;--ink:#152d38;--sub:#4d6770;--mint:#0a8769;--blue:#216eae;--pink:#a53369;--gold:#865b11;--shadow:0 18px 36px #194a3915}}@media(max-width:760px){.seo-intro{padding:24px 20px}.seo-bread{margin-top:4px}.seo-section{margin:25px 0}}

/* BIOLOGIAVERSE CAT — Experiències 3D, iteració 2026-10-10 */
.xp-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.xp-card{border:1px solid var(--line,rgba(127,164,175,.22));border-radius:20px;overflow:hidden;background:var(--card,rgba(118,163,195,.07));transition:transform .2s,border-color .2s;min-width:0}
.xp-card:hover,.xp-card:focus-within{transform:translateY(-3px);border-color:#55dfbc}
.xp-card a{display:block;color:inherit;text-decoration:none;height:100%}
.xp-art{height:158px;display:grid;place-items:center;position:relative;overflow:hidden;background:radial-gradient(circle at 35% 25%,#345b78,#102c46 55%,#06172c);isolation:isolate}
.xp-art span{font-size:4.2rem;filter:drop-shadow(0 10px 30px rgba(51,239,198,.33));z-index:1;transform:rotate(-8deg)}
.xp-art i{position:absolute;width:190px;height:190px;border:1px solid #98ddce65;border-radius:50%;transform:rotate(-37deg) scaleY(.48)}
.xp-art-1{background:radial-gradient(circle at 35% 32%,#8d4969,#30294e 65%,#121a35)}.xp-art-2{background:radial-gradient(circle at 35% 32%,#296779,#132e5c 65%,#071728)}.xp-art-3{background:radial-gradient(circle at 35% 32%,#429774,#1b5152 65%,#0a2339)}.xp-art-4{background:radial-gradient(circle at 35% 32%,#66549d,#29275b 65%,#161d35)}.xp-art-5{background:radial-gradient(circle at 35% 32%,#9a6783,#50335e 65%,#151a3a)}.xp-art-6{background:radial-gradient(circle at 35% 32%,#367f9b,#184a58 65%,#0b263e)}
.xp-card-body{padding:1.1rem}.xp-card-body h3{margin:.45rem 0 .3rem;font-size:1.12rem}.xp-card-body p{line-height:1.45;min-height:3.5em}.xp-card-body .btn{display:inline-flex;margin-top:.4rem}
.xp-page{max-width:1300px;margin:auto}.xp-stage{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(275px,.9fr);gap:1.2rem;align-items:start;margin:1rem 0 1.5rem}
.xp-main,.xp-side{min-width:0}.xp-canvas-wrap{position:relative;border-radius:22px;overflow:hidden;background:#071a2d;border:1px solid #47708188;min-height:390px;height:min(55vw,590px)}
.xp-canvas-wrap canvas{width:100%;height:100%;display:block;touch-action:none;cursor:grab}.xp-canvas-wrap canvas:active{cursor:grabbing}.xp-canvas-label{position:absolute;top:12px;left:12px;color:#d8f8f8;font-size:.7rem;letter-spacing:.08em;font-weight:750;z-index:1;pointer-events:none;background:#031b29a9;border-radius:20px;padding:.5rem .7rem}
.xp-toolbar,.xp-viewlist{display:flex;flex-wrap:wrap;gap:.4rem;margin:.6rem 0}.xp-toolbar button{min-height:41px}.xp-viewlist button[aria-pressed="true"]{background:#1e9d87;color:white;border-color:#2bccad}
.xp-speed{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.7rem;padding:.6rem 0;font-size:.88rem}.xp-speed input{min-width:0;accent-color:#2bbca6}.xp-speed output{grid-column:3;grid-row:1}
.xp-side-panel,.xp-experiment{padding:1rem;border:1px solid var(--line,rgba(108,160,180,.25));background:var(--card,rgba(120,175,195,.07));border-radius:16px;margin-bottom:.8rem}
.xp-side-panel h2,.xp-experiment h3{font-size:1.14rem;margin:0 0 .85rem}.xp-side-panel select,.xp-experiment input[type=text],.xp-experiment input:not([type]){width:100%;max-width:100%}.xp-side-panel #xp-part-info{margin-top:.8rem;line-height:1.45}.xp-side-panel #xp-part-info h3{margin:.4rem 0}
.xp-param{margin:.75rem 0}.xp-param label{display:flex;justify-content:space-between;gap:.4rem;font-size:.84rem}.xp-param input{width:100%;accent-color:#2dbb9b}.xp-experiment meter{width:100%;height:24px}
.xp-experiment .xp-spark{height:92px;display:flex;align-items:end;gap:2px;margin:.75rem 0;border-bottom:1px solid currentColor}.xp-experiment .xp-spark span{display:block;flex:1;background:linear-gradient(#86f0be,#288a81);border-radius:3px 3px 0 0;min-width:3px}
.xp-mission{margin-top:1.2rem}.xp-options{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0}.xp-options button{white-space:normal;text-align:left;line-height:1.5;min-height:44px}.xp-mission-feedback{min-height:2.5rem}.xp-done{padding:.8rem 0}.xp-hra{border-left:3px solid #4ccba9;padding:0 1rem;margin-top:1.2rem}.xp-hra p{line-height:1.55}.xp-hra a{color:inherit;text-decoration:underline}
[data-theme="light"] .xp-card{background:#f4fbfb;border-color:#d0e8e3}[data-theme="light"] .xp-side-panel,[data-theme="light"] .xp-experiment{background:#f4fafa}
@media(max-width:1000px){.xp-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.xp-stage{grid-template-columns:minmax(0,1fr)}.xp-canvas-wrap{height:490px}.xp-side{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.xp-side details{grid-column:span 2}}
@media(max-width:640px){.xp-cards{grid-template-columns:1fr}.xp-art{height:130px}.xp-stage{gap:.65rem}.xp-canvas-wrap{min-height:310px;height:62vh;max-height:490px}.xp-side{display:block}.xp-speed{grid-template-columns:1fr auto}.xp-speed input{grid-column:1 / -1;grid-row:2}.xp-toolbar button{flex-grow:1}.xp-page h1{font-size:1.7rem}}
@media(prefers-reduced-motion:reduce){.xp-card{transition:none}.xp-card:hover{transform:none}}

.xp-art svg{position:relative;z-index:1;display:block;width:100%;height:100%;max-width:390px;filter:drop-shadow(0 8px 12px rgba(3,17,39,.25))}
.xp-art svg path,.xp-art svg ellipse{transition:opacity .2s}


/* Educationverse v7: millores no destructives i accessibles */
.study-home{background:linear-gradient(130deg,rgba(49,184,161,.12),rgba(97,132,216,.09));border:1px solid var(--line);border-radius:22px}
.study-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:12px;margin:16px 0}
.study-card{padding:1rem;border:1px solid var(--line);background:var(--card);border-radius:16px}
.study-card h3{font-size:1.1rem;margin:.5rem 0}
.study-card p{min-height:2.7em}
.student-hub{max-width:1200px;margin:auto}
.student-hub .panel{margin:1.1rem 0}
.student-hub .tablewrap{max-height:440px;overflow:auto}
.student-sketch{width:100%;height:auto;max-height:430px;background:#fff;border:2px solid #8eb4ba;border-radius:15px;touch-action:none;cursor:crosshair;display:block}
.sketch-tools,.quiz-nav{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;margin:.8rem 0}
.quiz-nav{justify-content:space-between;margin-top:1.2rem}
.quiz-card{padding:.4rem 0;animation:educationverse-enter .32s cubic-bezier(.2,.7,.2,1) both}
.quiz-card .quizoptions{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:.65rem}
.quiz-card .quizoptions button{min-height:52px;text-align:left;white-space:normal}
.quiz-card .orderitem{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.85rem;border:1px solid var(--line);border-radius:14px;margin:.45rem 0}
.quiz-card .orderitem strong{flex:1;font-weight:650;line-height:1.5}
.order-number{background:var(--accent,#17a788);color:#fff;font-weight:800;min-width:2em;min-height:2em;border-radius:100%;display:inline-grid;place-items:center}
.quiz-card #quiz-short{font-size:1.05rem;max-width:600px}
.quiz-card button:focus-visible,.student-hub button:focus-visible,.student-hub a:focus-visible{outline:3px solid #e6a93c;outline-offset:3px}
@keyframes educationverse-enter{from{transform:translateX(34px);opacity:0}to{transform:translateX(0);opacity:1}}
@media(prefers-reduced-motion:reduce){.quiz-card{animation:none !important}}
@media(max-width:390px){.quiz-card .orderitem{flex-wrap:wrap}.quiz-card .orderitem>div{width:100%;display:flex;justify-content:flex-end}.study-cards{grid-template-columns:1fr}.sketch-tools .btn{flex:1}}
@media print{.sitehead,.chat-launch,.chatbox,.sketch-tools,.quiz-nav,#student-erase,.student-hub .toolbar{display:none!important}.student-sketch{max-width:100%;border:1px solid #bbb}.study-card{break-inside:avoid}}

/* Biologiaverse v8 · itineraris incorporats */
.expanded-lesson{margin-block:1.4rem}.learning-step{padding:1.1rem 1.3rem;margin:.85rem 0;border:1px solid var(--line);border-left:4px solid #2cbfa5;border-radius:16px;background:var(--card)}
.learning-step h3{margin:.3rem 0 .55rem}.learning-step p{line-height:1.75;margin-bottom:.25rem}
.expanded-lesson .panel{margin-top:1rem}.expanded-lesson .panel .btn{margin:.35rem}
@media(prefers-reduced-motion:reduce){.learning-step{transition:none}}

.new-curriculum{margin-block:1.3rem 2.2rem}.new-curriculum .titleline{gap:1rem;align-items:start;flex-wrap:wrap}.new-curriculum .study-card{background:var(--card);border:1px solid var(--line)}

/* Ampliació curricular v9: taules, casos experimentals i controls accessibles */
.dossier{max-width:980px;margin:1.4rem 0;padding:1rem;border-radius:18px;border:1px solid var(--line);background:var(--card)}
.dossier table{border-collapse:collapse;width:100%;max-width:710px;margin:1rem auto}
.dossier th,.dossier td{padding:.65rem .85rem;border:1px solid var(--line);text-align:left;white-space:normal}
.dossier th{background:rgba(76,154,152,.13)}
.dossier-answers{border:0;padding:0;margin:.9rem 0;display:grid;gap:.5rem}
.dossier-answers legend{font-weight:700;margin-bottom:.6rem}
.dossier-answers label{display:flex;align-items:flex-start;gap:.65rem;padding:.65rem;border:1px solid var(--line);border-radius:12px;cursor:pointer}
.dossier-answers label:has(input:checked){border-color:#24ad9c;background:rgba(36,173,156,.1)}
.dossier-answers input{margin-top:.3rem;accent-color:#248977}
.dossier-panel{margin-top:1rem}
.dossier-answers input:focus-visible{outline:3px solid #e7b144;outline-offset:3px}
@media(max-width:390px){.dossier{padding:.55rem}.dossier th,.dossier td{padding:.5rem}}
@media print{.dossier{break-inside:avoid}.dossier-answers{display:none}}