.landing{--band:#27306b;--nightd:#1b1f4b;--star:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 5 5' shape-rendering='crispEdges'%3E%3Cpath fill='%23e8a93a' d='M2 0h1v2h2v1H3v2H2V3H0V2h2z'/%3E%3C/svg%3E")}.landing canvas.px{image-rendering:pixelated;image-rendering:crisp-edges;display:block}.landing h1,.landing h2,.landing h3,.landing p{margin:0}.landing .btn{cursor:pointer;background:var(--terracotta);color:var(--cream);box-shadow:0 2px 0 var(--terracotta-edge);border:0;border-radius:6px;padding:11px 20px;font-weight:600;text-decoration:none;transition:transform 80ms,box-shadow 80ms,background .12s;display:inline-block}.landing .btn:hover{background:var(--terracotta-light)}.landing .btn:active{box-shadow:none;transform:translateY(2px)}.landing .btn.small{padding:7px 12px;font-size:14px}.landing .first{background:var(--band);flex-direction:column;min-height:100vh;display:flex}.landing .scene{position:relative;overflow:hidden}.landing .scene>canvas.px{width:100%;height:100%;position:absolute;inset:0}.landing .scene>.over{z-index:1;position:relative}.landing .hero{min-height:0;color:var(--cream);background:linear-gradient(#1b1f4b 0%,#4a2f6b 28%,#b4532f 52%,#e8a93a 66%,#c97a2d 82%,#27306b 100%);flex:1 0 auto}.landing .nav{align-items:center;gap:28px;padding:16px clamp(20px,5vw,64px) 10px;display:flex}.landing .nav .links{gap:24px;margin-left:auto;font-size:15px;display:flex}.landing .nav .links a,.landing .nav .login{opacity:.92;text-decoration:none}.landing .nav .links a:hover{opacity:1;text-underline-offset:5px;text-decoration:underline}.landing .nav .login{font-size:15px}.landing .nav .theme-btn{color:var(--cream);border-color:#fbf3e080}.landing .hero-text{text-align:center;text-shadow:0 1px #14173699,0 0 22px #1417368c;max-width:820px;margin:0 auto;padding:clamp(8px,3vh,40px) 20px clamp(110px,16vh,240px)}@media (min-width:901px){.landing .hero-text{padding-top:clamp(16px,17vh - 75px,150px)}}.landing .hero-text .kicker{color:var(--saffron)}.landing .hero-text h1{letter-spacing:-.01em;margin:12px 0 14px;font-size:clamp(34px,4.6vw,62px)}.landing .hero-text .sub{text-shadow:0 1px 1px #141736f2,0 0 12px #141736e6,0 0 28px #141736b3;max-width:640px;margin:0 auto 22px;font-size:clamp(16px,1.4vw,19px)}.landing .ask{background:var(--card);max-width:600px;text-shadow:none;border-radius:8px;align-items:center;margin:0 auto;padding:5px;display:flex;box-shadow:0 10px 28px #0f123066}.landing .ask>span{font-family:var(--font-mono);color:var(--terracotta);padding-left:12px;font-weight:700}.landing .ask input{min-width:0;color:var(--ink);box-shadow:none;background:0 0;border:0;outline:none;flex:1;padding:10px;font-size:16px}.landing .ask .btn{box-shadow:none;white-space:nowrap}.landing .ask .btn:active{transform:none}.landing .band{background:var(--band);color:var(--cream);flex:none;padding:0 clamp(20px,5vw,64px) 34px}.landing .wrap{max-width:1120px;margin:0 auto}.landing .band .kicker{color:var(--saffron)}.landing .band-head{align-items:center;gap:18px;margin-bottom:18px;display:flex}.landing .band h2{max-width:760px;margin-top:6px;font-size:clamp(22px,2.3vw,30px)}.landing .cols3{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.landing .band .cols3 p{background:#ffffff0f;border-radius:8px;padding:15px 18px;font-size:14.5px}.landing .band .cols3 b{font-family:var(--font-mono);color:var(--saffron);letter-spacing:.1em;margin-bottom:6px;font-size:13px;display:block}.landing .section{background:var(--sand);padding:84px clamp(20px,5vw,64px)}.landing .section.alt{background:var(--sand-deep)}.landing .section h2{margin:12px 0 14px;font-size:clamp(28px,3.2vw,42px)}.landing .section .lead{color:var(--ink-muted);max-width:620px;margin-bottom:40px;font-size:18px}.landing .chapters{grid-template-columns:repeat(4,1fr);gap:20px;display:grid}.landing .chapter,.landing .tool,.landing .compare .col{background:var(--card);border:1px solid var(--line);box-shadow:var(--soft);border-radius:8px}.landing .chapter{padding:26px 24px 28px}.landing .chapter .num{font-family:var(--font-mono);color:var(--terracotta);font-size:30px;line-height:1}.landing .chapter h3{margin:14px 0 8px;font-size:21px}.landing .chapter p{color:var(--ink-muted);font-size:15px}.landing .split{grid-template-columns:1fr 1.1fr;align-items:center;gap:56px;display:grid}.landing .split ul{margin:0 0 30px;padding:0;list-style:none}.landing .split li{border-bottom:1px solid var(--line);padding:10px 0 10px 30px;position:relative}.landing .split li:before,.landing .compare .after li:before{content:"";width:15px;height:15px;image-rendering:pixelated;background:var(--star) center / contain no-repeat;position:absolute;top:17px;left:2px}.landing .mini{background:var(--sand);border:1px solid var(--line);box-shadow:var(--soft-lg);border-radius:8px;padding:24px}.landing .msg{gap:12px;margin:0 0 22px;display:flex}.landing .msg.user{justify-content:flex-end}.landing .msg.user .bubble{background:var(--bubble);color:var(--bubble-ink);border-radius:8px 8px 2px;max-width:78%;padding:10px 16px}.landing .msg .body{flex:1;min-width:0}.landing .msg .who{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--terracotta);margin-bottom:6px;font-size:11px}.landing .msg .body p{margin-bottom:10px}.landing .cite{font-family:var(--font-mono);background:var(--turquoise-soft);color:var(--turquoise-dark);white-space:nowrap;border-radius:3px;margin-left:4px;padding:1px 6px;font-size:11px;display:inline-block}.landing .thinking-line{font-family:var(--font-serif);color:var(--accent-text);font-size:18px;font-style:italic}.landing .thinking-line:after{content:"";width:9px;height:9px;image-rendering:pixelated;background:var(--star) center / contain no-repeat;margin-left:10px;animation:1s steps(2,end) infinite twinkle;display:inline-block}@keyframes twinkle{50%{opacity:.15}}.landing .step{font-family:var(--font-mono);color:var(--ink-muted);margin-top:6px;font-size:12px}.landing .step:before{content:"› ";color:var(--turquoise)}.landing .tools{grid-template-columns:repeat(3,1fr);gap:22px;display:grid}.landing .tool{flex-direction:column;padding:24px;display:flex}.landing .tool h3{margin:8px 0;font-size:23px}.landing .tool>p{color:var(--ink-muted);margin-bottom:20px;font-size:15px}.landing .tool .demo{margin-top:auto}.landing .fiche{background:var(--sand);border:1px solid var(--line);border-radius:6px;padding:16px 18px;font-size:14px}.landing .fiche h4{font-family:var(--font-serif);margin:0 0 8px;font-size:18px;font-weight:400}.landing .call{border-left:3px solid var(--turquoise);background:var(--turquoise-soft);border-radius:4px;margin-top:10px;padding:10px 14px}.landing .call.warm{border-left-color:var(--saffron);background:var(--warm-soft)}.landing .quiz{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:20px}.landing .quiz .q{font-family:var(--font-serif);margin-bottom:14px;font-size:19px}.landing .quiz button{text-align:left;background:var(--sand);border:1px solid var(--line);cursor:pointer;width:100%;color:var(--ink);border-radius:4px;margin-bottom:8px;padding:11px 16px;display:block}.landing .quiz button:hover:not(:disabled){border-color:var(--turquoise)}.landing .quiz button.good{background:var(--turquoise-soft);border-color:var(--turquoise)}.landing .quiz button.bad{background:var(--error-soft);border-color:var(--terracotta)}.landing .quiz .fb{color:var(--ink-muted);min-height:22px;margin-top:6px;font-size:14px}.landing .flash{perspective:900px;cursor:pointer;width:100%;height:170px;color:inherit;font:inherit;background:0 0;border:0;padding:0}.landing .flash .inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .5s;position:relative}.landing .flash.on .inner{transform:rotateY(180deg)}.landing .flash .face{backface-visibility:hidden;text-align:center;border:1px solid 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li:before{content:"";background:var(--ink-muted);width:10px;height:2px;position:absolute;top:17px;left:2px}.landing .compare .before{color:var(--ink-muted)}.landing .compare .before h3{color:var(--ink)}.landing .compare .after{border-color:var(--turquoise)}.landing .compare .after li:before{width:11px;height:11px;top:13px}.landing .final{min-height:660px;color:var(--cream);background:linear-gradient(var(--sand-deep) 50%, var(--nightd) 50%);text-align:center}.landing .final .over{text-shadow:0 2px #0f1230b3;max-width:760px;margin:0 auto;padding:190px 20px 0}.landing .final .kicker{color:var(--saffron)}.landing .final h2{margin:14px 0 28px;font-size:clamp(30px,3.6vw,46px)}.landing .final .btn{text-shadow:none}.landing .foot{background:var(--nightd);color:#b9b6d6;padding:28px clamp(20px,5vw,64px);font-size:14px}.landing .foot .wrap{flex-wrap:wrap;align-items:center;gap:24px;display:flex}.landing .foot .wrap>span{max-width:560px}.landing .foot .right{gap:16px;margin-left:auto;display:flex}.landing .foot a{color:inherit}@media (max-width:900px){.landing .cols3,.landing .tools,.landing .split,.landing .compare{grid-template-columns:1fr}.landing .chapters{grid-template-columns:1fr 1fr}.landing .nav .links{display:none}.landing .nav .login{margin-left:auto}.landing .band-head{flex-direction:column;align-items:flex-start;gap:14px}.landing .hero-text{padding-bottom:190px}}@media (max-width:560px){.landing .chapters{grid-template-columns:1fr}.landing .nav .btn{display:none}}@media (max-height:780px) and (min-width:901px){.landing .hero-text h1{margin:8px 0 10px;font-size:clamp(30px,3.8vw,48px)}.landing .hero-text .sub{margin-bottom:16px;font-size:15px}.landing .hero-text{padding-bottom:104px}.landing .band{padding-bottom:22px}.landing .band-head{margin-bottom:12px}}.landing~footer{display:none}