.ds-economics-school-page .ds-econ-longbook{font-size:1.03rem;line-height:1.78;color:#1d2f46}
.ds-economics-school-page .ds-econ-longbook>section{scroll-margin-top:92px;margin:2.2rem 0;padding-top:.2rem}
.ds-economics-school-page .ds-econ-longbook h2{font-size:clamp(1.55rem,2.2vw,2.15rem);line-height:1.2;margin:0 0 1rem;color:#102f58}
.ds-economics-school-page .ds-econ-longbook h3{font-size:1.22rem;line-height:1.3;margin:1.4rem 0 .55rem;color:#184773}
.ds-economics-school-page .ds-econ-longbook p{max-width:88ch;margin:.8rem 0 1rem}
.ds-economics-school-page .ds-course-example,.ds-economics-school-page .ds-course-method,.ds-economics-school-page .ds-course-warning,.ds-economics-school-page .ds-course-formula{margin:1.15rem 0;padding:1rem 1.15rem;border-radius:10px;border:1px solid #d4dfeb;background:#f8fbfe}
.ds-economics-school-page .ds-course-example{border-left:5px solid #2779b8}.ds-economics-school-page .ds-course-method{border-left:5px solid #2e7d5b}.ds-economics-school-page .ds-course-warning{border-left:5px solid #b06911;background:#fffaf1}.ds-economics-school-page .ds-course-formula{border-left:5px solid #674da7;background:#fbf9ff}
.ds-economics-school-page .ds-course-formula code{white-space:normal;font:600 1rem/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;color:#20324d}
.ds-economics-school-page .ds-econ-source{font-size:.94rem;padding:.62rem .78rem;border-left:3px solid #5285b5;background:#f5f9fd}
.ds-economics-school-page .ds-econ-longbook dl{display:grid;grid-template-columns:minmax(150px,220px) 1fr;gap:.55rem 1rem;margin:1rem 0}.ds-economics-school-page .ds-econ-longbook dt{font-weight:850;color:#143c68}.ds-economics-school-page .ds-econ-longbook dd{margin:0}
.ds-course-floating-nav{position:fixed;z-index:1800;right:max(14px,env(safe-area-inset-right));top:126px;width:46px;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.ds-course-floating-nav>details{width:46px;border:0;background:transparent;box-shadow:none;overflow:visible}
.ds-course-floating-nav summary{box-sizing:border-box;list-style:none;cursor:pointer;width:46px;height:46px;border:1px solid rgba(255,255,255,.68);border-radius:999px;display:flex;align-items:center;justify-content:center;background:#123f70;color:#fff;box-shadow:0 6px 20px rgba(7,31,58,.28);font-size:0;font-weight:850}
.ds-course-floating-nav summary::-webkit-details-marker{display:none}.ds-course-floating-nav summary::before{content:"☰";font-size:18px;line-height:1}.ds-course-floating-nav summary:hover,.ds-course-floating-nav summary:focus-visible{background:#174f89;outline:3px solid rgba(0,85,164,.26);outline-offset:2px}
.ds-course-floating-nav details[open]{position:relative;width:min(360px,calc(100vw - 86px))}.ds-course-floating-nav details[open] summary{width:100%;height:auto;min-height:46px;border-radius:12px 12px 0 0;justify-content:flex-start;padding:.72rem .9rem;font-size:.96rem}.ds-course-floating-nav details[open] summary::before{margin-right:.5rem}
.ds-course-floating-nav nav{display:none}.ds-course-floating-nav details[open] nav{display:block;width:100%;max-height:min(68vh,640px);overflow:auto;box-sizing:border-box;padding:.45rem;background:rgba(255,255,255,.985);border:1px solid #b7c8da;border-top:0;border-radius:0 0 12px 12px;box-shadow:0 16px 36px rgba(13,48,84,.22)}
.ds-course-floating-nav a{display:block;padding:.52rem .58rem;border-radius:7px;color:#244866!important;text-decoration:none!important;font-size:.88rem;line-height:1.28}.ds-course-floating-nav a:hover,.ds-course-floating-nav a:focus-visible{background:#153f70!important;color:#fff!important;outline:2px solid #e4b934;outline-offset:1px}.ds-course-floating-nav a[aria-current]{font-weight:850;background:#eef5fc;color:#113d6f!important}
.ds-course-progress{display:none}.ds-course-floating-nav details[open] .ds-course-progress{display:block;height:3px;background:#e0e8f1;width:100%}.ds-course-progress>span{display:block;height:100%;width:0;background:#1d5a93}
@media(max-width:900px){.ds-course-floating-nav{top:auto;bottom:170px;right:max(8px,env(safe-area-inset-right))}.ds-course-floating-nav details[open]{width:min(420px,calc(100vw - 20px));right:0}.ds-course-floating-nav details[open] nav{max-height:58vh}}
@media(max-width:640px){.ds-economics-school-page .ds-econ-longbook{font-size:1rem;line-height:1.7}.ds-economics-school-page .ds-econ-longbook p{max-width:none}.ds-economics-school-page .ds-econ-longbook dl{grid-template-columns:1fr;gap:.15rem}.ds-course-floating-nav{bottom:158px}.ds-course-floating-nav summary{width:42px;height:42px}.ds-course-floating-nav,.ds-course-floating-nav>details{width:42px}.ds-course-floating-nav details[open]{width:calc(100vw - 16px)}}
@media(prefers-reduced-motion:reduce){.ds-course-floating-nav summary{transition:none}}
@media print{.ds-course-floating-nav{display:none!important}.ds-economics-school-page .ds-econ-longbook{font-size:11pt;line-height:1.5}}


.ds-course-floating-nav{overflow:visible!important}.ds-course-floating-nav>details{position:relative!important}.ds-course-floating-nav details[open]{position:absolute!important;right:0!important;left:auto!important;top:0!important;transform:none!important;max-width:calc(100vw - 24px)!important}.ds-course-floating-nav details[open] nav{max-width:100%!important}
@media(max-width:640px){.ds-course-floating-nav details[open]{right:0!important;width:calc(100vw - 16px)!important;max-width:calc(100vw - 16px)!important}}

/* Le sommaire flottant reste sous l’en-tête global sur grand écran. */
@media(min-width:901px){.ds-course-floating-nav{top:164px!important}}