*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font:16px/1.65 Arial,Helvetica,sans-serif;color:#14263d;background:#fff}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}a:focus-visible,button:focus-visible{outline:3px solid #ec6b35;outline-offset:5px}header{padding:22px 5%;display:flex;justify-content:space-between;align-items:center;background:white;border-bottom:1px solid #dfe4e9;gap:25px}.logo{font-size:25px;font-weight:900;letter-spacing:-1.3px;white-space:nowrap}.logo span{color:#ec6b35}nav{display:flex;align-items:center;gap:23px;font-size:13px;font-weight:700}.navcta{padding:11px 16px;border:1px solid #14263d}.menu{display:none}section{padding:80px 7%}.hero{display:grid;grid-template-columns:1.25fr 1fr;gap:60px;background:#f4f6f8;padding-top:65px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:bold;color:#a43b12;margin:0 0 20px}h1{font-size:clamp(42px,4.5vw,68px);line-height:1.07;letter-spacing:-3px;margin:24px 0}h1 em{font-style:normal;color:#c34c1b}.intro{max-width:560px;font-size:17px;color:#596579}.actions{display:flex;gap:24px;flex-wrap:wrap;align-items:center;margin-top:30px}.button{display:inline-flex;justify-content:space-between;gap:30px;background:#ec6b35;color:#14263d;border:0;padding:15px 22px;font-size:14px;font-weight:bold;cursor:pointer}.textlink{font-size:13px;font-weight:bold}.heroart{min-height:440px;background:#14263d;color:white;padding:30px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.arttop{font-size:10px;letter-spacing:3px;color:#b6c7d9}.orbit{width:210px;height:210px;border:1px solid #658097;border-radius:50%;display:grid;place-items:center;margin:25px auto;box-shadow:0 0 0 25px #ffffff08,0 0 0 50px #ffffff04}.orbit 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#ec6b35;padding-bottom:6px;display:inline-block;margin-top:15px}.num{font-size:13px;color:#b84416}.dark{background:#14263d;color:white}.dark .eyebrow{color:#ff986b}.dark .sectionhead p{color:#b6c7d9}.slide{display:grid;grid-template-columns:1fr 1fr;background:#20374f;gap:40px;align-items:center;padding:35px}.slide[hidden]{display:none}.diagram{min-height:200px;display:flex;flex-direction:column;justify-content:space-between;color:#ffa77f;font-size:50px;font-weight:bold;background:linear-gradient(140deg,#20374f,#325873);padding:25px}.diagram span{font-size:45px;letter-spacing:5px}.slide small{letter-spacing:2px;color:#b6c7d9;font-size:10px}.slidecontrols{display:flex;gap:25px;justify-content:flex-end;align-items:center;margin-top:20px}.slidecontrols button{background:transparent;color:white;border:1px solid #7891a7;padding:6px 17px;cursor:pointer}.training{display:grid;grid-template-columns:1.3fr 1fr;gap:70px}.training aside{background:#f4f6f8;padding:35px}.training aside b{color:#bd4210;margin-right:14px}.note{border-left:3px solid #ec6b35;padding-left:15px;font-size:13px;color:#596579}.pale{background:#f4f6f8}.contactbanner{background:#ec6b35;display:flex;justify-content:space-between;gap:30px}.contactbanner a{display:block;font-size:20px;font-weight:bold}.formsection{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px;border-bottom:1px solid #dfe4e9}.formsection>div>p{color:#596579}.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}label{display:flex;flex-direction:column;font-size:13px;font-weight:bold;gap:7px}.wide{grid-column:1/-1}input,select,textarea{padding:11px;border:1px solid #c6d0da;border-radius:0;background:white;color:#14263d;width:100%;min-width:0}textarea{resize:vertical}.consent,.application-consent{display:flex;flex-direction:row;align-items:flex-start;gap:10px;margin:22px 0;font-weight:normal}.consent input,.application-consent input{width:17px;flex-shrink:0;margin-top:4px}.small{font-size:11px;color:#596579}.error{color:#a02020}.error[hidden],[hidden]{display:none!important}footer{background:#14263d;color:white;padding:45px 7%;font-size:13px}footer details{max-width:800px;color:#b6c7d9;margin-top:20px}.axera-chat-launcher{background:#14263d!important}button:disabled{opacity:.6;cursor:wait}@media(max-width:1000px){nav{gap:12px}.hero{gap:30px}.sectionhead,.training,.formsection{gap:35px}}@media(max-width:760px){header{flex-wrap:wrap}.menu{display:block;background:white;border:1px solid #c6d0da;padding:7px 12px}nav{display:none;width:100%;flex-wrap:wrap;padding-top:15px}nav.open{display:flex}.hero,.sectionhead,.training,.formsection{grid-template-columns:1fr}.heroart{min-height:360px}section{padding:55px 6%}h1{letter-spacing:-2px}.cards{grid-template-columns:1fr}.strip{flex-direction:column;gap:5px}.contactbanner{flex-direction:column}.slide{grid-template-columns:1fr;padding:20px;gap:15px}.fields{grid-template-columns:1fr}.wide{grid-column:auto}.contactbanner a{font-size:18px}.artlabels{font-size:8px}}

/* Activités ALTRUISTEC */
.activity-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.activity-card{background:#fff;border:1px solid #dfe4e9;display:flex;flex-direction:column;min-width:0}.activity-logo{height:132px;padding:24px;display:flex;align-items:center;justify-content:center;gap:18px;border-bottom:1px solid #edf0f3}.activity-logo img{display:block;object-fit:contain;width:180px;max-width:100%;height:72px}.activity-logo svg{width:58px;height:58px;color:#c34c1b}.activity-logo.engie-logo{background:#14263d}.activity-logo .eps-mark{width:76px;height:42px}.activity-logo:has(.eps-mark)>img:first-child{width:145px;max-width:60%}.activity-body{padding:26px;display:flex;flex-direction:column;flex:1}.activity-category{font-size:11px!important;text-transform:uppercase;letter-spacing:1.2px;color:#a43b12!important;margin:0 0 10px}.activity-body h3{font-size:22px;margin:0 0 12px}.activity-body>p{font-size:14px;color:#596579}.activity-body>a{margin-top:auto;padding-top:20px;font-size:13px;font-weight:bold;display:flex;justify-content:space-between;gap:10px}.activity-body>a span{color:#b84416}.brand-note{font-size:11px;color:#596579;margin-top:24px}@media(max-width:1100px){header{flex-wrap:wrap}.activity-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.activity-grid{grid-template-columns:1fr}.activity-logo{height:120px}.activity-body{padding:24px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Navigation multipage */
.breadcrumb{padding:22px 7%;font-size:13px;background:#f4f6f8;color:#596579}.breadcrumb a{text-decoration:underline;text-underline-offset:4px}.page-title{font-size:clamp(32px,3.5vw,48px);line-height:1.15;letter-spacing:-1.4px;margin:0 0 25px}nav a[aria-current="page"]{color:#a43b12;text-decoration:underline;text-underline-offset:7px}.overview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.overview-card{display:flex;flex-direction:column;border:1px solid #dfe4e9;padding:28px;background:#f4f6f8}.overview-card:hover{border-color:#ec6b35}.overview-card h3{margin:16px 0 8px}.overview-card p{font-size:14px;color:#596579}.overview-link{display:flex;justify-content:space-between;font-size:13px;font-weight:bold;margin-top:auto;padding-top:20px}.overview-link>span{color:#b84416}@media(max-width:1000px){header{gap:16px}nav{flex-wrap:wrap}.overview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.overview-grid{grid-template-columns:1fr}}

/* Immersive ALTRUISTEC visuals and motion */
:root{--navy:#102137;--ink:#15263a;--blue:#68d5ff;--orange:#f4773c;--mist:#f3f6f8}html{scroll-behavior:smooth}body{overflow-x:hidden}header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(14px);transition:box-shadow .3s}header:has(nav.open){box-shadow:0 18px 40px #10213718}.hero{position:relative;min-height:610px;align-items:center;isolation:isolate;overflow:hidden;background:radial-gradient(ellipse at 78% 45%,#cbdbe7 0%,#f3f6f8 55%)}.hero:before{content:"";position:absolute;inset:0;z-index:-1;opacity:.28;background-image:linear-gradient(105deg,transparent 48%,#6fbbe224 49%,transparent 50%),linear-gradient(20deg,transparent 70%,#f4773c12 71%,transparent 72%);background-size:130px 130px;animation:gridflow 26s linear infinite}.hero>div:first-child{position:relative;z-index:2;animation:rise-in .9s both}.hero-visual{position:relative;min-height:470px;height:100%;overflow:hidden;background:#102137;box-shadow:0 25px 80px #10213730;transform:translateY(0);animation:rise-in 1s .15s both}.hero-visual>img{position:absolute;width:100%;height:100%;inset:0;object-fit:cover;animation:slow-zoom 18s ease-in-out infinite alternate}.hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#07132310 35%,#071323d9 100%),linear-gradient(90deg,#10213735,#10213705)}.hero-badge,.hero-visual-caption{position:absolute;z-index:2;color:white;left:28px}.hero-badge{top:26px;padding:10px 14px;border:1px solid #ffffff66;background:#10213799;backdrop-filter:blur(10px);font-size:10px;letter-spacing:1.4px}.pulse-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#57e0ba;margin-right:8px;box-shadow:0 0 0 0 #57e0ba99;animation:pulse 2s infinite}.hero-visual-caption{bottom:28px;right:24px}.hero-visual-caption>span{display:block;font-size:10px;letter-spacing:2px;color:#aad9f1}.hero-visual-caption strong{display:block;margin-top:12px;font-size:clamp(22px,3vw,34px);line-height:1.15}.hero-orbit{position:absolute;z-index:1;width:240px;height:240px;top:32%;left:38%;border:1px solid #8cddff9c;border-radius:50%;box-shadow:0 0 30px #52cbff44,inset 0 0 30px #52cbff22;animation:orbit-breathe 7s ease-in-out infinite}.hero-orbit:before,.hero-orbit:after{content:"";position:absolute;inset:24px;border:1px dashed #d0f2ff80;border-radius:50%;animation:spin 26s linear infinite}.hero-orbit:after{inset:54px;border-style:solid;animation-direction:reverse;animation-duration:32s}.about-intro,.home-media{display:grid;grid-template-columns:1fr .8fr;gap:8%;align-items:center;padding:100px 9%}.about-copy h2{max-width:760px}.about-copy>p:not(.eyebrow){max-width:690px;color:#596579}.about-stat{position:relative;padding:48px;background:#102137;color:#fff;min-height:250px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.about-stat:after{content:"";position:absolute;width:240px;height:240px;right:-60px;top:-60px;border:1px solid #69c9ee66;border-radius:50%;box-shadow:0 0 0 24px #69c9ee0b,0 0 0 52px #69c9ee08;animation:orbit-breathe 8s infinite}.stat-line{width:46px;height:4px;background:var(--orange)}.about-stat p{position:relative;z-index:1;font-size:24px;line-height:1.4;max-width:340px}.stat-bottom{font-size:9px;letter-spacing:2px;color:#a9c4d8}.stat-bottom i{color:var(--orange);font-style:normal}.home-overview{background:#f5f7f9}.home-overview>.eyebrow,.home-overview>h2{margin-left:0}.overview-card{position:relative;overflow:hidden;transition:transform .28s,border-color .28s,box-shadow .28s}.overview-card:after{content:"";position:absolute;inset:auto -10% -50% 45%;height:110px;background:radial-gradient(ellipse,#f4773c22,transparent 70%);transition:transform .4s}.overview-card:hover{transform:translateY(-7px);box-shadow:0 22px 45px #10213710}.overview-card:hover:after{transform:translateY(-30px)}.home-media{grid-template-columns:.8fr 1.2fr}.home-media p:not(.eyebrow){color:#596579}.home-media img,.page-visual>img{width:100%;height:100%;min-height:330px;object-fit:cover;box-shadow:0 22px 55px #1021371c}.page-visual{display:grid;grid-template-columns:1fr 1fr;gap:7%;align-items:center;padding:36px 7% 75px;background:linear-gradient(120deg,#f4f6f8,#eaf0f5)}.page-visual-copy h2{max-width:520px}.page-visual-copy>p:last-child{color:#596579;max-width:490px}.page-visual>img{max-height:370px}.photo-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px}.photo-grid figure{margin:0;position:relative;min-height:260px;overflow:hidden;background:#102137}.photo-grid img{width:100%;height:100%;min-height:260px;object-fit:cover;transition:transform .7s}.photo-grid figure:hover img{transform:scale(1.04)}.photo-grid figcaption{position:absolute;bottom:0;left:0;right:0;padding:34px 20px 16px;color:#fff;background:linear-gradient(transparent,#0a182bdf);font-weight:bold}.photo-grid .photo-feature img{min-height:330px}.realisation-gallery>.small{margin-top:16px}.course-program{background:#f4f6f8}.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-card{background:#fff;padding:28px;border:1px solid #dfe4e9;position:relative;transition:transform .28s,box-shadow .28s}.course-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px #10213712}.course-code{display:inline-flex;padding:6px 10px;background:#102137;color:#fff;font-size:13px;font-weight:bold;letter-spacing:1px}.course-card h3{margin:17px 0 10px}.course-card>p{font-size:14px;color:#596579}.course-card .course-audience{border-top:1px solid #e7ebef;padding-top:14px}.course-card>a{display:inline-block;margin-top:8px;font-weight:bold;font-size:13px;color:#a43b12}.course-legal{border-left:3px solid var(--orange);padding:15px 20px;background:#fff;font-size:13px;color:#596579;margin-top:24px}.course-source{font-size:12px;color:#596579}.course-source a{text-decoration:underline;text-underline-offset:3px}.brand-note{font-size:11px}.activities .activity-card,.overview-card,.course-card,.photo-grid figure,.page-visual{animation:rise-in .7s both}.activity-grid>*:nth-child(2),.overview-grid>*:nth-child(2){animation-delay:.08s}.activity-grid>*:nth-child(3),.overview-grid>*:nth-child(3){animation-delay:.14s}.activity-grid>*:nth-child(4),.overview-grid>*:nth-child(4){animation-delay:.2s}.activity-grid>*:nth-child(5),.overview-grid>*:nth-child(5){animation-delay:.26s}.photo-grid>*:nth-child(2){animation-delay:.1s}.photo-grid>*:nth-child(3){animation-delay:.2s}.network-video{width:100%;display:block;max-height:500px;object-fit:cover;background:#102137}.video-frame{position:relative;margin:38px 0 12px;background:#102137;overflow:hidden}.video-frame:after{content:"ALTRUISTEC · RÉSEAUX CONNECTÉS";position:absolute;bottom:18px;left:20px;color:#fff;font-size:10px;letter-spacing:2px;text-shadow:0 2px 8px #000}.video-caption{font-size:12px;color:#596579}@keyframes rise-in{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{70%{box-shadow:0 0 0 9px #57e0ba00}100%{box-shadow:0 0 0 0 #57e0ba00}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes gridflow{to{background-position:130px 130px}}@keyframes slow-zoom{to{transform:scale(1.06)}}@keyframes orbit-breathe{0%,100%{transform:scale(.96);opacity:.5}50%{transform:scale(1.04);opacity:1}}@media(max-width:760px){.hero{grid-template-columns:1fr;min-height:0}.hero-visual{min-height:340px;grid-row:1}.about-intro,.home-media,.page-visual{grid-template-columns:1fr;padding:60px 6%;gap:30px}.about-intro{padding-bottom:30px}.page-visual>img{min-height:230px;max-height:290px}.photo-grid{grid-template-columns:1fr}.photo-grid figure,.photo-grid img,.photo-grid .photo-feature img{min-height:230px}.course-grid{grid-template-columns:1fr}.hero-orbit{width:160px;height:160px;left:35%;top:28%}.home-media{padding-top:65px}.home-media img{min-height:240px}.about-stat{min-height:210px;padding:32px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}

.hero-loop{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.hero-visual:has(.hero-loop):after{background:linear-gradient(180deg,#07132310 35%,#071323d9 100%),linear-gradient(90deg,#10213735,#10213705)}.video-showcase{background:#f3f6f8}.video-showcase .video-intro h2{max-width:720px}.video-showcase .video-intro>p:last-child{max-width:680px;color:#596579}.video-frame{max-width:1120px;margin-left:auto;margin-right:auto;border:1px solid #20374f}.network-video{aspect-ratio:16/9}.hero-loop{display:block}@media(prefers-reduced-motion:reduce){.hero-loop{display:none}}

/* Palette ALTRUISTEC — noir, blanc, gris et accents orange */
:root{color-scheme:light;--navy:#111;--ink:#171717;--blue:#c9c9c9;--orange:#ed6a2f;--mist:#f4f4f4;--black:#080808;--steel:#737373}body{color:#181818;background:#fff;font-family:Arial,Helvetica,sans-serif;letter-spacing:.005em}header{background:rgba(255,255,255,.94);border-bottom:1px solid #e6e6e6;color:#111}nav{color:#151515}nav a[aria-current="page"]{color:#b84e20}.logo span{color:#ed6a2f}header .navcta{border-color:#202020;background:#fff;color:#161616}header .navcta:hover{background:#111;color:#fff}.hero{background:#070707;color:#fff;min-height:660px}.hero h1,.hero h2{color:#fff}.hero .eyebrow{color:#ed6a2f}.hero .intro{color:#d2d2d2}.hero .textlink{color:#fff}.hero .button{background:#fff;color:#111}.hero .button:hover,.button:hover{background:#ed6a2f;color:#111}.hero:before{opacity:.15;background-image:linear-gradient(105deg,transparent 48%,#ffffff18 49%,transparent 50%),linear-gradient(20deg,transparent 70%,#ed6a2f18 71%,transparent 72%)}.hero-visual{background:#090909;box-shadow:0 28px 90px #0008}.hero-visual:after{background:linear-gradient(180deg,#0002 25%,#000e 100%),linear-gradient(90deg,#0006,#0001)}.hero-orbit{border-color:#ffffff80;box-shadow:0 0 28px #ffffff1c,inset 0 0 28px #ffffff12}.hero-orbit:before,.hero-orbit:after{border-color:#ffffff55}.hero-badge{border-color:#ffffff55;background:#050505aa}.hero-visual-caption>span{color:#ddd}.pulse-dot{background:#ed6a2f;box-shadow:0 0 0 0 #ed6a2f99}.strip{background:#fff;border-bottom:1px solid #e9e9e9;color:#343434}.about-intro,.home-media{background:#fff}.about-copy h2,.home-overview h2,.sectionhead h2,.page-visual h2,.course-program h2,.video-showcase h2{color:#111}.about-stat{background:#080808}.about-stat:after{border-color:#ed6a2f66;box-shadow:0 0 0 24px #ed6a2f0c,0 0 0 52px #ed6a2f08}.stat-line{background:#ed6a2f}.stat-bottom 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