:root{color-scheme:light;--ink:#362735;--plum:#552640;--coral:#ef967e;--paper:#faf7f4;--muted:#70646d;font-family:Inter,"Segoe UI",Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 95% 70%,#f4e8e350,transparent 60%),var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased}a{color:inherit}svg{display:block}a:focus-visible{outline:3px solid #a34735;outline-offset:5px}.site-header,main,footer{width:min(1160px,calc(100% - 64px));margin-inline:auto}.site-header{height:100px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:13px;letter-spacing:1.6px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--plum);color:#fff;font-weight:800;font-size:17px;letter-spacing:-1px;box-shadow:0 5px 12px #55264020}.header-note{font-size:13px;color:var(--muted)}.hero{isolation:isolate;position:relative;overflow:hidden;min-height:456px;border-radius:30px;background:linear-gradient(115deg,#321d34 0%,#612941 45%,#ab555a 77%,#e7987e 100%);color:#fff;box-shadow:0 24px 55px -26px #55264085}.hero-copy{position:relative;z-index:2;padding:48px 54px 64px;max-width:710px}.eyebrow{display:flex;align-items:center;gap:10px;margin:0 0 26px;font-size:10px;font-weight:700;letter-spacing:2.7px;color:#ffddd0}.eyebrow span{width:6px;height:6px;background:#ffc6a3;border-radius:50%;box-shadow:0 0 14px #ffc6a3}h1{margin:0;font-size:clamp(52px,6.9vw,86px);font-weight:800;letter-spacing:-4px;line-height:.96;text-shadow:0 5px 18px #23112145}h1 span{color:#ffe2d2}h1 i{color:#f6aa8b;font-style:normal}.subjects{font-size:11px;letter-spacing:2px;font-weight:700;margin:26px 0 18px;color:#fff1e9}.subjects span{color:#ffb699;margin:0 9px}.hero-description{font-size:16px;line-height:1.75;max-width:450px;margin:0;color:#f6e4e8}.hero-light{position:absolute;inset:0;background:radial-gradient(ellipse at 92% 0%,#ffc8a85c,transparent 48%),radial-gradient(ellipse at 50% 130%,#cd748469,transparent 60%);z-index:-1}.hero-orbit{position:absolute;border:1px solid #ffdec739;border-radius:50%;width:680px;height:270px;right:-190px;top:60px;transform:rotate(-38deg);z-index:-1}.orbit-two{width:820px;height:410px;right:-220px;top:42px;border-color:#ffdec71e}.hero-art{position:absolute;right:60px;top:72px;width:288px;height:288px;perspective:900px}.art-ring{position:absolute;inset:-12px;border:1px solid #ffecd74d;border-radius:50%;box-shadow:0 0 0 22px #ffecd708,0 0 0 44px #ffecd705}.art-card{position:absolute;inset:22px;border-radius:38px;transform:rotate(-10deg);border:1px solid #fff2d962}.card-back{transform:translate(17px,16px) rotate(9deg);background:linear-gradient(145deg,#c7777660,#4b243882);box-shadow:18px 24px 38px #32132736}.card-front{display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#ffdfc33b,#f4b7940a 45%,#55264048);box-shadow:inset 1px 1px 2px #ffe5d650,0 24px 38px #3a132c42}.card-front strong{font-size:112px;letter-spacing:-12px;padding-right:10px;color:#ffe3cc;text-shadow:1px 1px 0 #fff4e9,3px 5px 0 #8a4a5070,8px 15px 18px #3e223c66}.art-spark{position:absolute;right:22px;top:17px;font-size:28px;color:#ffdfb8}.art-caption{font-size:7px;letter-spacing:1.1px;color:#ffeddf}.art-dot{position:absolute;bottom:0;left:0;width:27px;height:27px;border-radius:50%;background:linear-gradient(140deg,#ffdeaf,#df856d);box-shadow:0 8px 16px #32132750}.welcome{position:relative;z-index:3;width:calc(100% - 64px);margin:-24px auto 0;border:1px solid #f0e5df;border-radius:22px;padding:30px 32px;background:#fff;box-shadow:0 15px 40px -22px #44253945;display:flex;align-items:center;justify-content:space-between;gap:28px}.section-kicker{font-size:9px;font-weight:800;letter-spacing:2px;color:#a55049;margin:0 0 10px}.welcome h2{margin:0;font-size:25px;letter-spacing:-.7px;line-height:1.18}.welcome-text>p:last-child{font-size:12px;color:var(--muted);margin:12px 0 0}.welcome-action{text-align:center}.login-button{display:flex;align-items:center;justify-content:center;gap:11px;min-height:58px;padding:17px 22px;border-radius:13px;background:var(--plum);color:#fff;text-decoration:none;font-size:14px;font-weight:650;box-shadow:0 7px 16px #55264024;transition:transform .2s,box-shadow .2s,background .2s}.login-button svg{width:22px;height:22px;flex-shrink:0}.button-arrow{font-size:21px;margin-left:8px;transition:transform .2s}.login-hint{font-size:11px;color:var(--muted);margin:12px 0 0}.universes{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;margin:36px 32px 0}.universe{display:flex;align-items:center;gap:14px;min-width:0}.universe-icon{display:grid;place-items:center;flex-shrink:0;width:48px;height:48px;border-radius:15px}.universe-icon svg{width:29px;height:29px}.pse .universe-icon{background:#f2e5ea;color:#783b60}.esn .universe-icon{background:#e5ede7;color:#3d6a53}.sciences .universe-icon{background:#f9eadb;color:#925526}.universe h2{margin:0 0 5px;font-size:14px;font-weight:700}.universe p{margin:0;font-size:10px;color:var(--muted);line-height:1.5}footer{display:flex;justify-content:space-between;align-items:center;padding:30px 0 22px;margin-top:28px;border-top:1px solid #e9e1dd;color:#776c73;font-size:10px}footer>span{letter-spacing:1.5px;font-weight:700}footer p{margin:0}
@media(hover:hover) and (pointer:fine){.login-button:hover{transform:translateY(-3px);background:#713653;box-shadow:0 12px 24px #55264035}.login-button:hover .button-arrow{transform:translate(2px,-2px)}}.login-button:active{transform:translateY(1px)}
@media(max-width:1000px){.hero-art{right:34px;top:100px;width:220px;height:220px}.card-front strong{font-size:88px}.art-caption{font-size:5px}.hero-copy{padding-left:36px;max-width:65%}.hero-description{font-size:15px}.subjects{font-size:9px;letter-spacing:1px}.subjects span{margin-inline:5px}.welcome{padding:26px 24px;gap:20px}.login-button{font-size:12px;padding-inline:15px}.universes{gap:15px}.universe{gap:10px}.universe h2{font-size:13px}}
@media(max-width:760px){.site-header,main,footer{width:calc(100% - 32px)}.site-header{height:80px}.header-note{font-size:11px}.brand{font-size:11px;letter-spacing:1px}.brand-mark{width:36px;height:36px;border-radius:12px}.hero{border-radius:24px;min-height:auto}.hero-copy{padding:34px 26px 64px;max-width:none}.eyebrow{font-size:8px;letter-spacing:1.8px;margin-bottom:26px}h1{font-size:64px;letter-spacing:-3px}.hero-art{right:-65px;top:70px;width:160px;height:160px;opacity:.22;z-index:0}.hero-copy{z-index:1}.card-front strong{font-size:65px}.art-caption,.art-spark{display:none}.art-card{border-radius:23px}.hero-description{max-width:410px;font-size:14px;line-height:1.7}.subjects{font-size:9px;letter-spacing:.7px;line-height:1.8;margin-top:24px}.subjects span{margin-inline:5px}.welcome{width:calc(100% - 24px);padding:25px 20px;flex-direction:column;align-items:stretch;gap:22px}.welcome h2{font-size:25px}.welcome h2 br{display:none}.welcome-action{width:100%}.login-button{font-size:13px;padding:16px 12px;gap:8px;line-height:1.45}.login-button svg{width:20px}.button-arrow{margin-left:0;flex-shrink:0}.login-hint{font-size:11px}.universes{grid-template-columns:1fr;margin:28px 18px 0;gap:20px}.universe{gap:15px}.universe h2{font-size:14px}.universe p{font-size:12px}.universe-icon{width:44px;height:44px}footer{margin-top:28px;gap:15px;font-size:9px;line-height:1.5}.header-note{max-width:90px;text-align:right}}
@media(max-width:360px){h1{font-size:56px}.hero-copy{padding-inline:20px}.subjects{font-size:8px}.login-button{font-size:12px}.welcome{padding-inline:14px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}.login-button:hover,.login-button:active,.login-button:hover .button-arrow{transform:none}}

/* Finition de lisibilite : structure et hero conserves. */
.site-header{gap:24px}.brand{font-size:14px;letter-spacing:1.4px}.header-note{font-size:14px;line-height:1.6;text-align:right}.eyebrow{font-size:12px;letter-spacing:2px}.subjects{font-size:12px;letter-spacing:1.5px}.section-kicker{font-size:12px;letter-spacing:1.6px}.welcome-text>p:last-child{font-size:14px}.login-hint{font-size:14px;line-height:1.5}.universes{align-items:stretch;gap:18px}.universe{padding:22px 18px;border:1px solid #eae2df;border-radius:18px;background:#fffaf7;box-shadow:0 7px 20px -12px #55264030;transition:transform .2s ease,box-shadow .2s ease;cursor:default}.universe.esn{background:#f8fbf8}.universe.sciences{background:#fffbf5}.universe>div{min-width:0}.universe h2{font-size:17px;line-height:1.3;font-weight:750}.universe p{font-size:14px;line-height:1.55}footer{font-size:13px;line-height:1.6}
@media(hover:hover) and (pointer:fine){.universe:hover{transform:translateY(-3px);box-shadow:0 12px 25px -13px #55264045}}
@media(min-width:761px) and (max-width:1000px){.universes{margin-inline:16px;gap:12px}.universe{flex-direction:column;align-items:flex-start;padding:20px 16px}.universe h2{font-size:16px}.universe p{font-size:14px}.login-button{font-size:14px}.subjects{font-size:11px;letter-spacing:.7px}.subjects span{margin-inline:4px}}
@media(max-width:760px){.site-header{height:auto;min-height:96px;gap:12px;padding-block:18px}.brand{font-size:13px;letter-spacing:.8px;flex-shrink:0}.header-note{font-size:12px;max-width:150px;line-height:1.65}.eyebrow{font-size:11px;letter-spacing:1.1px}.subjects{font-size:11px;letter-spacing:.3px;line-height:1.8}.subjects span{margin-inline:3px}.login-button{font-size:14px;min-height:60px}.login-hint{font-size:14px}.section-kicker{font-size:12px}.universes{margin-inline:12px;gap:14px}.universe{padding:20px;gap:16px}.universe h2{font-size:17px}.universe p{font-size:14px}footer{font-size:12px;align-items:flex-start;flex-wrap:wrap;gap:10px 20px}}
@media(max-width:360px){.brand{font-size:12px}.header-note{font-size:12px;max-width:125px}.subjects{font-size:10px}.login-button{font-size:14px}}
@media(prefers-reduced-motion:reduce){.universe:hover{transform:none}}