.visual-intro{position:relative;border-radius:32px;padding:32px;background:radial-gradient(circle at 85% 20%,rgba(126,119,255,.20),transparent 28%),linear-gradient(135deg,#182654 0%,#111c37 58%,#15244a 100%);border:1px solid #627ab4;display:grid;gap:15px;margin-bottom:28px;overflow:hidden;box-shadow:0 18px 60px rgba(0,0,0,.28)}
.visual-intro::after{content:"";position:absolute;inset:auto -60px -70px auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(140,232,237,.18),transparent 70%);pointer-events:none}
.visual-intro h1{font-size:clamp(30px,5vw,50px);line-height:1.02;letter-spacing:-.04em;margin:0;max-width:11ch}
.visual-intro p{color:#d6e0f0;max-width:820px;margin:0;font-size:15.5px}
.visual-tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.visual-tile{padding:0;border:1px solid #3e5179;background:linear-gradient(180deg,#111b35 0%,#0c1428 100%);border-radius:22px;overflow:hidden;text-align:left;min-height:280px;color:#f8fbff;display:flex;flex-direction:column;box-shadow:0 12px 32px rgba(0,0,0,.18);transition:transform .18s,border-color .18s,box-shadow .18s}
.visual-tile:hover{border-color:#86e5ed;transform:translateY(-3px);box-shadow:0 18px 38px rgba(0,0,0,.28)}
.visual-tile img{width:100%;aspect-ratio:16/10;object-fit:cover;background:radial-gradient(circle at 50% 35%,#14224b,#0a1125 75%);display:block;padding:8px}
.visual-tile .v-text{padding:16px 17px 20px;display:grid;gap:7px;flex:1}
.visual-tile .v-text strong{font-size:18px;line-height:1.22;letter-spacing:-.02em}
.visual-tile .v-text small{color:#98e7ed;font-weight:800;letter-spacing:.01em}
.visual-tile .v-text span{font-size:12.5px;color:#c0c9e2}
.visual-category{margin:38px 0 14px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.visual-category h2{margin:0;font-size:20px;letter-spacing:-.02em}
.visual-top{margin-bottom:18px;display:grid;gap:10px}
.visual-top h1{font-size:clamp(34px,5.7vw,56px);line-height:1.02;margin:0;letter-spacing:-.05em;max-width:13ch}
.visual-top p{font-size:16px;color:#c9d5e8;max-width:800px;margin:0}
.visual-shell{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:20px;align-items:start;margin-bottom:22px}
.visual-art-card,.visual-side-stack > *{border:1px solid #415778;border-radius:24px;background:linear-gradient(180deg,#0f1730 0%,#0b1327 100%);box-shadow:0 12px 36px rgba(0,0,0,.22)}
.visual-art-card{overflow:hidden}
.visual-art-stage{padding:16px;background:radial-gradient(circle at 50% 30%,rgba(95,92,202,.16),transparent 45%),linear-gradient(180deg,#0b1224,#0c1428)}
.visual-art-stage img{display:block;width:100%;max-height:560px;object-fit:contain;background:transparent;border-radius:18px}
.visual-art-meta{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;padding:14px 16px 16px;border-top:1px solid rgba(255,255,255,.07)}
.visual-art-meta p{margin:0;color:#b6c4de;font-size:12.5px;line-height:1.55;max-width:70ch}
.visual-art-meta .pill{white-space:nowrap}
.visual-side-stack{display:grid;gap:16px}
.visual-card{padding:20px}
.visual-card h2,.visual-card h3{margin:0 0 10px;font-size:20px;letter-spacing:-.02em}
.visual-card p{margin:0;color:#d9e4f2;line-height:1.72}
.visual-card ul{margin:10px 0 0;padding-left:18px;color:#d9e4f2}
.visual-card li+li{margin-top:8px}
.visual-ref{padding:16px 18px;border:1px solid #4e6992;border-radius:16px;background:linear-gradient(180deg,#16284a,#13233d);color:#def6f3;font-weight:730;display:grid;gap:5px}
.visual-ref small{color:#b8d4df;font-weight:500;line-height:1.55}
.visual-fact{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:12px}
.visual-fact .mini{border:1px solid #334866;border-radius:16px;background:#101b31;padding:14px}
.visual-fact .mini b{display:block;font-size:12px;color:#91e4ec;text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}
.visual-fact .mini span{color:#ecf3ff;font-size:14px;line-height:1.45}
.visual-flash{border:1px solid #40567c;border-radius:24px;background:linear-gradient(180deg,#13213b,#101b33);padding:24px;margin:24px 0 20px}
.visual-flash h2{font-size:24px;margin:6px 0 10px;line-height:1.22;letter-spacing:-.03em}
.visual-choices{display:grid;gap:10px;margin:17px 0 0}
.visual-choice{background:linear-gradient(180deg,#223457,#1d2d4d);border-radius:14px;padding:14px 15px;text-align:left;border:1px solid #51668a;color:white;font-weight:700;line-height:1.45;transition:transform .15s,background .15s}
.visual-choice:hover:not(:disabled){background:#334d72;transform:translateY(-1px)}
.visual-choice:disabled{opacity:.72;cursor:default}.visual-choice.good{border-color:#93eccc;background:#174535;opacity:1}.visual-choice.bad{border-color:#eaa4ac;background:#5b2a37;opacity:1}
.visual-feedback{font-size:14px;color:#ebf5ff;background:#213f53;border-left:4px solid #95e3e9;border-radius:10px;padding:13px 16px;line-height:1.65;margin-top:12px}
.visual-extras{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.visual-nasa{display:grid;gap:10px}
.visual-nasa .source{font-size:12.5px;color:#b8cbe0;line-height:1.55}
.visual-next{margin-top:40px}
.visual-note{font-size:13px;color:#adbbd6}
@media(max-width:980px){.visual-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.visual-shell{grid-template-columns:1fr}.visual-top h1{max-width:none}.visual-fact{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.visual-tiles,.visual-fact{grid-template-columns:1fr}.visual-intro{padding:22px}.visual-flash,.visual-card{padding:18px}.top .bar{flex-wrap:wrap;justify-content:center}.top-actions{width:100%;justify-content:space-around}.top-actions .navbtn{font-size:12px;padding:7px 8px}.top{padding:12px 0 9px}.visual-art-stage{padding:10px}.visual-art-meta{display:grid}}

/* V9 — illustrations scientifiques visuellement riches ; textes distincts ; zoom accessible */
.visual-tile img{aspect-ratio:16/9;object-fit:cover;padding:0;border-radius:0;filter:saturate(1.06) contrast(1.03)}
.visual-tile{background:linear-gradient(180deg,#152341 0%,#0c1429 100%);border-color:#506b91}
.visual-art-stage{position:relative;padding:0;background:#030819}
.visual-art-stage img{width:100%;max-height:none;aspect-ratio:16/9;object-fit:contain;border-radius:0}
.visual-art-stage .visual-enlarge{position:absolute;right:14px;bottom:14px;z-index:1;border-radius:10px;color:#eefaff;background:#091528d9;border:1px solid #89a8c599;padding:9px 12px;font-weight:800;font-size:12px;backdrop-filter:blur(8px)}
.visual-art-meta .pill{white-space:normal;line-height:1.3;text-align:center}
.visual-lightbox{width:min(96vw,1450px);max-width:96vw;max-height:96vh;border:1px solid #556a91;border-radius:17px;padding:14px;background:#080f22;color:white;box-shadow:0 40px 140px #000d}
.visual-lightbox::backdrop{background:#020611ee}
.visual-lightbox img{display:block;width:100%;height:auto;max-height:calc(94vh - 140px);object-fit:contain}
.visual-lightbox p{color:#c2d6eb;font-size:12px;margin:7px 0 0;line-height:1.4}
.visual-modal-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 3px 12px}
.visual-modal-tools strong{font-size:14px}
.visual-modal-tools button{background:#233853;border:1px solid #6483a7;color:white;border-radius:10px;padding:10px 14px;font-weight:800}
@media(max-width:640px){.visual-art-stage .visual-enlarge{right:9px;bottom:9px;font-size:11px;padding:7px 9px}.visual-art-meta p{font-size:12px}.visual-lightbox{padding:8px;width:100vw;max-width:100vw}.visual-modal-tools strong{font-size:11px}}