/* Delta-Sierra Mars UX & imagery — V20.21.0 */
:root{--mars-accent:#c85a2e;--mars-accent-2:#143d6b;--mars-soft:#fff5ef}
.mars-system-hero h1,.mars-hero h1{font-size:clamp(2rem,3vw,3rem)!important;line-height:1.06!important;letter-spacing:-.025em;text-wrap:balance}
.mars-h1-subtitle{margin:.55rem 0 0;font-size:clamp(1rem,1.4vw,1.2rem);line-height:1.45;color:#526277;max-width:850px}.mars-hero .mars-h1-subtitle{color:rgba(255,255,255,.84)}
.mars-system-sidebar,.mars-system-sidebar a,.mars-system-sidebar summary{font-size:13px!important}
.mars-editorial-visual{margin:2.1rem 0 2.4rem;padding:0;background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 10px 28px rgba(18,31,54,.08)}
.mars-editorial-visual img,.mars-content figure img,.mars-system-article figure img{display:block;max-width:100%;height:auto}
.mars-editorial-visual img[data-mars-lightbox],.mars-content figure img[data-mars-lightbox],.mars-system-article figure img[data-mars-lightbox]{cursor:zoom-in;border:3px solid transparent;border-radius:14px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;outline:none}
.mars-editorial-visual img[data-mars-lightbox]:hover,.mars-content figure img[data-mars-lightbox]:hover,.mars-system-article figure img[data-mars-lightbox]:hover{border-color:var(--mars-accent);box-shadow:0 0 0 4px rgba(200,90,46,.14),0 14px 32px rgba(41,28,21,.18);transform:translateY(-1px)}
.mars-editorial-visual img[data-mars-lightbox]:focus-visible,.mars-content figure img[data-mars-lightbox]:focus-visible,.mars-system-article figure img[data-mars-lightbox]:focus-visible{border-color:#1556a2;box-shadow:0 0 0 4px rgba(21,86,162,.22)}
.mars-editorial-visual figcaption{padding:.75rem 1rem 1rem;font-size:13px;line-height:1.55;color:#465266;background:#fff}.mars-editorial-visual figcaption::after{content:'  ·  Cliquer pour agrandir';font-weight:700;color:#9b4525}
.mars-lightbox{position:fixed;inset:0;z-index:100000;background:rgba(4,10,19,.94);display:none;align-items:center;justify-content:center;padding:24px}.mars-lightbox.is-open{display:flex}.mars-lightbox__inner{position:relative;max-width:min(96vw,1800px);max-height:94vh;display:flex;flex-direction:column;align-items:center}.mars-lightbox__img{max-width:96vw;max-height:86vh;width:auto;height:auto;object-fit:contain;background:#fff;box-shadow:0 18px 70px rgba(0,0,0,.45)}.mars-lightbox__caption{color:#fff;font-size:13px;line-height:1.5;margin:.6rem 3rem 0;text-align:center}.mars-lightbox__close{position:absolute;top:-12px;right:-12px;width:44px;height:44px;border:0;border-radius:999px;background:#fff;color:#111;font-size:28px;line-height:1;cursor:pointer;box-shadow:0 5px 20px rgba(0,0,0,.35)}
.mars-books-strip{margin:2.8rem 0 1.7rem;padding:1.1rem 1.15rem;border:1px solid #ead5c8;border-radius:16px;background:linear-gradient(135deg,#fffaf6,#fff)}.mars-books-strip__title{margin:0 0 .35rem;font-size:18px;color:#15345d}.mars-books-strip__intro{margin:0 0 .8rem;font-size:13px;line-height:1.55;color:#526071}.mars-books-strip__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem}.mars-book-link{display:grid;grid-template-columns:56px 1fr;gap:.7rem;align-items:center;padding:.7rem;border-radius:12px;border:1px solid #eadfd8;background:#fff;text-decoration:none!important;color:#163457!important;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}.mars-book-link:hover{transform:translateY(-2px);border-color:#c85a2e;box-shadow:0 8px 22px rgba(82,47,29,.12)}.mars-book-link img{width:56px!important;height:78px!important;object-fit:cover;border-radius:4px}.mars-book-link strong{display:block;font-size:13px;line-height:1.25}.mars-book-link span{display:block;margin-top:.25rem;font-size:12px;line-height:1.35;color:#59677a}
.mars-family-water{--mars-accent:#168a9b;--mars-soft:#effbfd}.mars-family-energy{--mars-accent:#c47b13;--mars-soft:#fff8e9}.mars-family-industry{--mars-accent:#b6532b;--mars-soft:#fff4ee}.mars-family-transport{--mars-accent:#a93735;--mars-accent-2:#122f57;--mars-soft:#fff0ef}.mars-family-human{--mars-accent:#6956a6;--mars-accent-2:#294d80;--mars-soft:#f6f2ff}
.mars-family-water .mars-section:nth-of-type(4n+2),.mars-family-energy .mars-section:nth-of-type(4n+2),.mars-family-industry .mars-section:nth-of-type(4n+2),.mars-family-transport .mars-section:nth-of-type(4n+2),.mars-family-human .mars-section:nth-of-type(4n+2){border-left-color:var(--mars-accent)!important;background:linear-gradient(135deg,var(--mars-soft),#fff)!important}
.mars-master-map{scroll-margin-top:2rem}.mars-master-map.ds-master-map-promoted{margin-top:1.7rem!important;margin-bottom:2.4rem!important;box-shadow:0 16px 42px rgba(20,38,64,.12)}
.mars-mobile-sidebar-toggle,.site-nav-mobile-toggle{display:none}
@media(max-width:760px){
 .mars-system-hero h1,.mars-hero h1{font-size:clamp(1.78rem,8vw,2rem)!important;line-height:1.08!important}
 .site-nav{padding:.25rem .55rem!important}.site-nav-mobile-toggle{display:flex;width:100%;align-items:center;justify-content:center;gap:.5rem;padding:.7rem .85rem;border:1px solid #c9d5e7;border-radius:10px;background:#fff;color:#0f315c;font-weight:800;font-size:14px;cursor:pointer}.site-nav .site-nav__inner{display:none!important;flex-direction:column!important;align-items:stretch!important;overflow:visible!important;white-space:normal!important}.site-nav.is-open .site-nav__inner{display:flex!important}.site-nav .site-nav__inner a{display:block!important;padding:.68rem .75rem!important}
 .mars-system-sidebar{padding:.8rem!important}.mars-sidebar-title{font-size:13px!important}.mars-mobile-sidebar-toggle{display:flex;width:100%;align-items:center;justify-content:center;gap:.45rem;margin:.65rem 0 0;padding:.7rem .75rem;border:1px solid #d8c7bc;border-radius:10px;background:#fff6f0;color:#72351d;font-weight:800;font-size:13px;cursor:pointer}.mars-system-sidebar .mars-sidebar-group{display:none!important}.mars-system-sidebar.is-open .mars-sidebar-group{display:block!important}.mars-system-sidebar.is-open .mars-sidebar-group:not([open]) nav{display:none}.mars-system-sidebar .mars-sidebar-tools{margin-bottom:0!important}
 .mars-books-strip__grid{grid-template-columns:1fr}.mars-book-link{grid-template-columns:48px 1fr}.mars-book-link img{width:48px!important;height:68px!important}
 .mars-lightbox{padding:10px}.mars-lightbox__close{top:2px;right:2px}.mars-lightbox__caption{margin:.45rem 2.8rem 0;font-size:12px}
}
@media(prefers-reduced-motion:reduce){.mars-editorial-visual img[data-mars-lightbox],.mars-book-link{transition:none!important}.mars-editorial-visual img[data-mars-lightbox]:hover,.mars-book-link:hover{transform:none!important}}