/* ui-ux-test : direction éditoriale claire, guidée par UI/UX Pro Max. */
:root {
    --color_primary: var(--brand-green);
    --color_secondary: var(--brand-sage);
    --color_text: var(--brand-charcoal);
    --color_muted: var(--brand-muted);
    --color_surface: #fff;
    --color_background: var(--brand-paper);
    --color_border: var(--brand-border);
    --color_on_primary: #fff;
    --color_soft: var(--brand-soft);
    --color_secondary_soft: var(--brand-stone);
    --color_hover: var(--brand-hover);
    --paper_color: #f4f5f6;
    --ink: var(--brand-charcoal);
    --radius: 12px;
    --shadow: none;
    --main_background: #f2f6f3;
    --main_dot: rgba(20, 69, 47, .08);
}
.design-site { background: var(--color_background); font-family: "Segoe UI", system-ui, sans-serif; font-size: 1rem; line-height: 1.65; }
.design-site [hidden] { display: none !important; }
.design-site main { max-width: 1360px; padding: 3.5rem 3rem 5rem; }
.design-site #main-content {
    background-color: var(--main_background);
    background-image: radial-gradient(var(--main_dot) 1.2px, transparent 1.6px);
    background-size: 22px 22px;
}
.design-site h1, .design-site h2, .design-site h3 { text-wrap: balance; }
.design-site h1 { font-size: clamp(2.3rem, 4.4vw, 4.4rem); font-weight: 650; letter-spacing: -.065em; line-height: 1.08; }
.design-site h2 { letter-spacing: -.045em; font-weight: 650; font-size: clamp(1.45rem, 2.5vw, 2rem); }
.design-site h3 { font-size: 1.2rem; letter-spacing: -.025em; }
.design-site p { text-wrap: pretty; }
.design-site a { text-underline-offset: .25em; }
.design-site :focus-visible { outline: 3px solid var(--brand-green); outline-offset: 4px; }
.design-site .eyebrow { font-size: .8rem; font-weight: 650; letter-spacing: .035em; color: var(--color_muted); margin: 0 0 1rem; }
.design-site .panel, .design-site main > article, .design-site main > form { border: 1px solid var(--color_border); border-radius: var(--radius); background: #fff; padding: clamp(1.5rem, 3vw, 2.25rem); box-shadow: var(--shadow); }
.design-site button, .design-site a.action { position: relative; isolation: auto; clip-path: none; border-radius: 6px; min-height: 48px; padding: .8rem 1.3rem; background: var(--color_primary); color: white; border: 1px solid var(--color_primary); display: inline-flex; align-items: center; justify-content: center; gap: .8rem; font-size: .92rem; font-weight: 650; text-decoration: none; transition: background-color .18s, box-shadow .18s; }
.design-site button::before, .design-site button::after, .design-site a.action::before, .design-site a.action::after { content: none; }
.design-site button:hover, .design-site a.action:hover { color: white; background: var(--color_hover); box-shadow: 0 4px 12px #23262a18; }
.design-site button:focus-visible, .design-site a.action:focus-visible { outline: 3px solid var(--brand-green); outline-offset: 3px; text-decoration: none; }
.design-site a.action.secondary { background: white; border-color: #98ad9d; color: var(--color_primary) !important; }
.design-site a.action.secondary:hover { background: var(--color_soft); }
.design-site button:disabled { opacity: .5; box-shadow: none; cursor: not-allowed; }
.design-site input:not([type=checkbox]):not([type=radio]):not([type=hidden]), .design-site select, .design-site textarea { border: 1px solid var(--brand-muted); border-radius: 6px; background: white; min-height: 48px; font-size: 1rem; }
.design-site input:focus, .design-site select:focus, .design-site textarea:focus { border-color: var(--color_primary); background: white; }
.design-site label { font-size: .9rem; font-weight: 600; }
.design-site .helptext { font-size: .8rem; margin-top: .45rem; }
.design-site .errorlist { background: #fff0f0; color: #862533; border-left: 3px solid #862533; padding: .8rem 1rem .8rem 2rem; border-radius: 4px; }
.design-site .site-nav { background: #fff; padding: 1rem max(1.5rem, calc((100vw - 1264px) / 2)); gap: 1rem; border-bottom: 1px solid var(--color_border); box-shadow: none; flex-wrap: nowrap; }
.design-site .site-brand { display: inline-flex; align-items: center; gap: .6rem; font-size: 1.15rem; white-space: nowrap; font-weight: 750; color: var(--ink); letter-spacing: -.05em; }
.brand-symbol { display: grid; place-items: center; width: 37px; height: 39px; border-radius: 10px 10px 3px 10px; background: var(--ink); color: var(--color_secondary); font: italic 700 1.9rem/1 Georgia, serif; }
.design-site .site-nav a:not(.site-brand) { clip-path: none; border-radius: 7px; color: var(--color_muted); background: transparent; font-size: .8rem; padding: .6rem .65rem; letter-spacing: 0; min-height: 44px; display: inline-flex; align-items: center; }
.design-site .site-nav a:not(.site-brand)::before, .design-site .site-nav a:not(.site-brand)::after { content: none; }
.design-site .site-nav a[aria-current="page"] { background: var(--color_soft); color: var(--color_primary); box-shadow: none; }
.design-site .site-nav a:hover { color: var(--color_primary); background: var(--color_soft); }
.design-site .site-nav a.nav-account { background: var(--ink); color: white; padding-inline: 1rem; }
.design-site .navigation-links { gap: .15rem; }
.design-site .site-nav .nav-toggle { background: white; color: var(--ink); border-color: var(--color_border); }
.design-site .hero { position: relative; background: var(--ink); color: white; border: 0; border-radius: 24px; margin: 0; padding: clamp(2rem, 5vw, 4rem); }
.design-site .hero::after { content: none; }
.landing-hero { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); align-items: center; gap: 3rem; min-height: 620px; }
.hero-copy { min-width: 0; }
.design-site .hero h1 { max-width: none; font-size: clamp(2.6rem, 4.7vw, 4.5rem); font-weight: 550; letter-spacing: -.065em; line-height: 1.07; margin-block: 1.5rem; }
.design-site .hero .eyebrow { color: var(--brand-border); display: flex; align-items: center; gap: .65rem; font-size: .78rem; }
.status-dot { flex: 0 0 7px; height: 7px; background: var(--color_secondary); border-radius: 50%; }
.hero-copy > p:not(.eyebrow):not(.hero-note) { color: var(--brand-border); font-size: 1.05rem; line-height: 1.85; max-width: 41ch; }
.design-site .hero-actions { display: flex; gap: 1.3rem; align-items: center; margin-top: 2.1rem; }
.design-site .hero a.action, .design-site .landing-closing a.action { background: var(--color_secondary); border-color: var(--color_secondary); color: var(--ink); }
.design-site .hero a.action:hover, .design-site .landing-closing a.action:hover { background: var(--brand-sage); }
.design-site .hero a:focus-visible { outline-color: #fff; }
.design-site .hero .text-link { color: #fff; font-size: .85rem; }
.design-site .hero-note { color: var(--brand-sage); font-size: .75rem; margin-top: 1.6rem; }
.hero-workspace { position: relative; padding: 1rem .5rem 2rem; }
.workspace-caption { display: flex; justify-content: space-between; color: var(--brand-border); font-size: .8rem; padding: 0 .3rem 1rem; }
.workspace-caption > span:last-child { font-size: 1.5rem; }
.design-site .sample-sheet { display: block; position: relative; transform: rotate(-3deg); background: #fffefa; color: var(--ink); padding: 2rem; border-radius: 8px; border: 1px solid #fff; text-decoration: none; box-shadow: 12px 14px 0 #ffffff12, 0 18px 40px #0003; transition: transform .2s; }
.design-site .sample-sheet:hover { transform: rotate(0); }
.design-site .sample-sheet:focus-visible { transform: none; outline-color: var(--color_secondary); }
.design-site .sample-sheet .eyebrow { color: var(--color_muted); font-size: .7rem; border-bottom: 1px solid var(--brand-border); padding-bottom: .8rem; }
.design-site .sample-sheet h2 { font: 500 clamp(2rem, 3vw, 3rem)/1.1 Georgia, serif; letter-spacing: -.055em; margin: 1rem 0; }
.sample-sheet > p { color: var(--brand-muted); font-size: .9rem; }
.sample-equation { border-block: 1px solid var(--brand-border); background: var(--brand-paper); padding: 1.1rem; text-align: center; font: italic 1.7rem Georgia, serif; }
.sample-definitions { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.sample-definitions p { font-size: .8rem; color: var(--brand-muted); }
.sample-definitions strong { display: block; color: var(--ink); font-size: .9rem; }
.design-site .sample-sheet .text-link { color: var(--color_primary); border-top: 1px solid var(--brand-border); display: block; padding-top: 1rem; font-weight: 650; }
.workspace-label { position: absolute; right: -1rem; bottom: .3rem; background: var(--color_secondary); color: var(--ink); padding: .7rem 1.1rem; border-radius: 8px; font-size: .8rem; font-weight: 650; box-shadow: 0 6px 18px #0002; transform: rotate(3deg); }
.workspace-label span { margin-right: .5rem; }
.format-strip { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.7rem .5rem; margin-bottom: 4rem; border-bottom: 1px solid var(--brand-border); flex-wrap: wrap; font-size: .85rem; }
.format-strip > span { color: var(--color_muted); }
.format-strip strong::before { content: '+'; color: var(--brand-green); margin-right: .7rem; }
.section-heading { display: flex; align-items: end; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin: 2.5rem 0 1.5rem; }
.section-heading p { color: var(--color_muted); font-size: .9rem; }
.design-site .landing-section-heading h2 { font-size: clamp(2rem, 3.8vw, 3.2rem); margin: 0; }
.benefit-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; margin: 2rem 0 4rem; }
.benefit-grid article { padding: 2rem; background: white; border: 1px solid var(--color_border); border-radius: var(--radius); }
.benefit-grid article:nth-child(2) { background: var(--brand-soft); }
.benefit-grid article:nth-child(3) { background: var(--brand-stone); }
.step-number { font-size: .8rem; color: var(--color_muted); font-variant-numeric: tabular-nums; }
.benefit-grid h2 { margin-top: 2.5rem; font-size: 1.4rem; }
.benefit-grid p { color: var(--color_muted); font-size: .9rem; margin-bottom: 0; }
.landing-closing { margin-top: 3.5rem; background: var(--ink); color: white; padding: 3rem; border-radius: 20px; display: flex; justify-content: space-between; align-items: center; gap: 2rem; }
.landing-closing .eyebrow { color: #dce9de; }
.landing-closing h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); margin: 0; }
.landing-closing a { flex-shrink: 0; }
.design-site .page-heading, .design-site .subjects-heading, .design-site .library-heading { margin: 0 0 2.75rem; padding: .5rem 0 2rem 1.5rem; border-bottom: 1px solid var(--brand-border); border-left: 3px solid var(--brand-green); }
.page-heading > p:last-child, .subjects-heading p, .library-heading p { color: var(--color_muted); }
.design-site .subjects-heading h1::after, .design-site .library-heading h1::after, .design-site main > h1::after { content: none; }
.shop-heading { display: flex; justify-content: space-between; align-items: end; gap: 2rem; }
.shop-heading > div { max-width: 760px; }
.shop-heading > a { flex-shrink: 0; }
.design-site .catalog-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
.design-site .catalog-grid article { min-width: 0; border: 1px solid var(--color_border); border-radius: var(--radius); padding: 1.75rem; position: relative; box-shadow: none; }
.design-site .catalog-grid article:hover { border-color: #98ad9d; }
.design-site main > .catalog-filters { display: flex; align-items: end; flex-wrap: nowrap; width: 100%; max-width: none; box-sizing: border-box; gap: .85rem; padding: 1rem; background: white; border: 1px solid var(--color_border); border-radius: 14px; margin-block: 0 1.5rem; box-shadow: none; }
.catalog-filters label { display: grid; gap: .4rem; flex: 1 1 0; min-width: 0; }
.catalog-filters label:first-child { flex-grow: 1.6; }
.design-site .catalog-filters input, .design-site .catalog-filters select { width: 100%; box-sizing: border-box; height: 50px; margin: 0; }
.design-site .catalog-filter-actions button { height: 50px; margin: 0; }
.catalog-filter-actions { display: flex; align-items: center; gap: .85rem; flex: 0 0 auto; }
.catalog-filter-actions > a { min-height: 48px; display: inline-flex; align-items: center; font-size: .8rem; white-space: nowrap; }
.catalog-summary { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; font-size: .85rem; color: var(--color_muted); margin-bottom: 1.5rem; }
.catalog-summary p { margin: 0; }
.access-badge { color: #24583f !important; background: #edf6ee; padding: .4rem .7rem; font-size: .8rem !important; border-radius: 5px; }
.progress-filter { display: flex; flex-wrap: wrap; gap: .75rem; flex-basis: 100%; border-top: 1px solid var(--color_border); padding-top: 1rem; margin: .5rem 0 0; }
.progress-filter legend { padding-right: .75rem; color: var(--color_muted); font-size: .85rem; }
.design-site .progress-filter label { display: inline-flex; flex: 0 1 auto; gap: .5rem; align-items: center; min-height: 44px; padding: .4rem .8rem; border: 1px solid var(--color_border); border-radius: 8px; cursor: pointer; }
.design-site .progress-filter label:has(input:checked) { background: var(--color_soft); border-color: var(--color_primary); }
.profile-prompt { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; padding: 1.5rem; margin-bottom: 2rem; background: var(--brand-stone); border-radius: 12px; }
.profile-prompt p { margin: .3rem 0 0; font-size: .9rem; }
.feedback-success { padding: 1.25rem; background: #edf6ee; color: #24583f; border: 1px solid #91b39e; border-radius: 10px; margin-bottom: 2rem; }
.shop-help { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 3rem; margin-top: 4rem; padding-top: 3rem; border-top: 1px solid var(--color_border); }
.shop-help h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
.shop-help > div > a { font-size: .85rem; }
.faq-list details { background: white; border: 1px solid var(--color_border); border-radius: 10px; margin-bottom: .75rem; }
.faq-list summary { cursor: pointer; padding: 1.2rem; font-weight: 600; font-size: .95rem; }
.faq-list details[open] { border-color: #98ad9d; }
.faq-list details p { margin: 0; padding: 0 1.2rem 1.2rem; color: var(--color_muted); font-size: .9rem; }
.design-site .subject-level, .design-site .subject-count { border: 0; border-radius: 5px; padding: .3rem .6rem; color: var(--color_primary); background: var(--color_soft); font-size: .75rem; }
.course-number { font-size: 3.25rem; line-height: 1; letter-spacing: -.07em; color: var(--brand-border); margin-bottom: 2rem; }
.design-site .subject-card h2, .design-site .pack-card h2 { margin: 1.25rem 0 .75rem; font-size: 1.6rem; }
.design-site .subject-date { border: 0; padding: 0; margin: 1rem 0 2rem; }
.subject-date dt { font-size: .75rem; color: var(--color_muted); }
.design-site .subject-date dd { font-size: .9rem; }
.design-site .subject-card .action { width: 100%; margin-top: auto; }
.design-site .pack-card { border-top: 5px solid var(--color_primary); }
.pack-card > p { color: var(--color_muted); font-size: .9rem; }
.pack-content { width: 100%; border-top: 1px solid var(--color_border); margin-top: 1rem; padding-top: 1rem; }
.pack-content h3 { font-size: .8rem; font-weight: 650; }
.pack-formats { display: grid; gap: .6rem; list-style: none; padding: 0; font-size: .9rem; }
.pack-formats li::before { content: '✓'; color: #246044; margin-right: .75rem; }
.access-note { font-size: .8rem; color: var(--color_muted); background: var(--brand-paper); border-radius: 8px; padding: .85rem; }
.design-site .pack-purchase { margin-top: auto; padding-top: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.design-site .pack-purchase::before { content: none; }
.design-site .pack-price { margin: 0; font-size: 2rem; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.pack-price small { display: block; font-size: .7rem; font-weight: 400; letter-spacing: 0; color: var(--color_muted); }
.home-dashboard { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 1.5rem; align-items: stretch; }
.home-dashboard > *, .reader-layout > * { min-width: 0; }
.home-dashboard .study-overview { display: flex; }
.design-site .home-dashboard .home-exams { margin: 0; }
.resume-card { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1.5rem; background: var(--ink); color: white; padding: 2.5rem; border-radius: var(--radius); width: 100%; }
.resume-card > div { min-width: 0; }
.resume-card .eyebrow, .resume-card p { color: #dce9de; }
.resume-card h2 { font-size: 2rem; max-width: 24ch; }
.design-site .resume-card a.action { background: var(--color_secondary); color: var(--ink) !important; border-color: var(--color_secondary); }
.dashboard-metrics { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.5rem; margin: 0 0 2rem; }
.dashboard-metrics > div { border-right: 1px solid var(--brand-border); display: flex; align-items: center; gap: 1rem; }
.dashboard-metrics strong { font-size: 2.8rem; font-weight: 500; letter-spacing: -.07em; }
.dashboard-metrics span { font-size: .85rem; color: var(--color_muted); max-width: 15ch; }
.dashboard-metrics > a { align-self: center; justify-self: end; font-size: .9rem; }
.exam-list { list-style: none; padding: 0; margin-bottom: 0; }
.exam-list li { padding: 1rem 0; border-top: 1px solid var(--color_border); display: flex; flex-direction: column; gap: .2rem; font-size: .95rem; }
.exam-list time { color: var(--color_muted); font-size: .8rem; }
.study-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 1rem; }
.study-card { display: block; background: white; border: 1px solid var(--color_border); border-radius: var(--radius); padding: 1.75rem; text-decoration: none; }
.study-card h3 { margin-top: 0; }
.study-card p, .study-card > span { font-size: .85rem; }
.study-card progress { width: 100%; height: .5rem; display: block; accent-color: var(--color_primary); margin: 1.5rem 0; }
.design-site .library-shell { margin: 0; padding: 0; }
.design-site .library-heading h1 { font-size: clamp(2.3rem, 4.4vw, 4rem); }
.study-overview { margin-bottom: 1.5rem; }
.home-dashboard .study-overview { margin-bottom: 0; }
.design-site .pack-access { background: transparent; border: 0; box-shadow: none; border-radius: 0; padding: 1rem 0; font-size: .9rem; }
.pack-access summary { min-height: 44px; display: list-item; padding-top: .5rem; }
.design-site .library-filters { background: white; border: 1px solid var(--color_border); border-radius: 12px; box-shadow: none; padding: 1.25rem; gap: .85rem; }
.design-site .resource-grid { gap: 1.25rem; }
.design-site .resource-card { border: 1px solid var(--color_border); border-radius: var(--radius); background: white; box-shadow: none; padding: 1.6rem; }
.design-site .resource-card:hover { background: white; border-color: #98ad9d; box-shadow: 0 8px 24px #23262a0a; }
.design-site .resource-card h3 { font-size: 1.3rem; line-height: 1.4; }
.design-site .resource-card p { font-size: .9rem; }
.format-tag { width: fit-content; background: var(--color_soft); color: var(--color_primary); font-size: .72rem; border-radius: 5px; padding: .3rem .65rem; }
.resource-status { font-size: .75rem; color: var(--color_muted); }
.resource-status.is-completed { color: #246044; }
.design-site .card-footer { padding-top: 1.1rem; margin-top: 1rem; font-size: .8rem; }
.design-site .reader-layout { grid-template-columns: minmax(0, 1fr) 270px; }
.design-site .media-reader { background: white; border-radius: 12px; border: 1px solid var(--color_border); padding: 1rem; }
.design-site .media-reader button { font-size: .8rem; padding: .6rem .8rem; }
.design-site .reader-tools { justify-content: flex-start; gap: .65rem; }
.design-site #reader-fullscreen { margin-left: auto; }
.design-site .course-sidebar { border: 1px solid var(--color_border); border-radius: 12px; background: white; box-shadow: none; }
.design-site .course-sidebar h2 { font-size: 1.1rem; }
.design-site .course-sidebar a { border-radius: 6px; font-size: .9rem; }
.design-site .course-sidebar a[aria-current] { border-left: 3px solid var(--color_primary); background: var(--color_soft); color: var(--color_primary); }
.design-site #pdf-pages { height: 65vh; background: #e2e7e2; border-radius: 6px; }
.design-site .media-reader:fullscreen #pdf-pages, .design-site .media-reader.expanded-reader #pdf-pages { height: auto; flex: 1; }
.design-site .media-reader:fullscreen, .design-site .media-reader.expanded-reader { border-radius: 0; }
.checkout-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 2rem; align-items: start; }
.checkout-layout > * { min-width: 0; }
.design-site .checkout-summary { background: var(--ink); color: white; border-color: var(--ink); }
.checkout-summary a { color: #dce9de; }
.checkout-summary .checkout-price { font-size: 3rem; font-weight: 650; margin-block: 1.5rem; letter-spacing: -.05em; }
.checkout-price small { display: block; font-size: .85rem; font-weight: 400; letter-spacing: 0; }
.checkout-summary .access-note { background: #ffffff12; color: #dce9de; }
.test-notice { padding: .5rem .75rem; font-size: .8rem; border-radius: 6px; background: var(--color_secondary_soft); color: var(--ink); }
.checkout-form h2 { margin-top: 0; }
.checkout-form form > button { width: 100%; }
.auth-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 6rem); max-width: 1080px; margin: 2rem auto; align-items: center; }
.registration-layout { align-items: start; }
.registration-layout .auth-intro { padding-top: 2rem; }
.contact-layout { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 3rem; align-items: start; }
.contact-layout > * { min-width: 0; }
.contact-layout .contact-title { width: min(100%, 24rem); }
.contact-layout .contact-message { min-height: 145px; }
.contact-intro > p { color: var(--color_muted); max-width: 42ch; }
.contact-help { padding: 1.5rem; background: var(--brand-soft); border-radius: 12px; margin-top: 2rem; }
.contact-help h3 { margin-top: 0; }
.contact-help p, .contact-help a { font-size: .9rem; }
.auth-intro p { color: var(--color_muted); max-width: 35ch; }
.design-site .auth-form { padding: clamp(1.5rem, 4vw, 3rem); }
.auth-form h2 { margin-top: 0; }
.auth-form form button { width: 100%; }
.auth-assistance { margin-top: 2rem; border-top: 1px solid var(--color_border); padding-top: 1rem; font-size: .85rem; }
.auth-assistance p { margin-bottom: .2rem; color: var(--color_muted); }
.design-site .account-panel h1, .design-site .account-panel h2 { font-size: 1.55rem; }
.account-panel dt { font-size: .8rem; color: var(--color_muted); }
.account-panel dd { margin: .3rem 0 1.25rem; overflow-wrap: anywhere; }
.order-list { padding: 0; list-style: none; }
.order-list li { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .75rem; border-top: 1px solid var(--color_border); padding: 1rem 0; }
.order-state { padding: .25rem .6rem; background: var(--color_soft); color: var(--color_primary); border-radius: 5px; font-size: .8rem; }
.design-site .purchase-status { max-width: 760px; margin: 1rem auto; }
.purchase-confirmed { display: flex; gap: .85rem; align-items: center; padding: .5rem 1rem; background: #edf6ee; color: #246044; border-radius: 10px; }
.purchase-confirmed > span { font-size: 1.6rem; }
.purchase-confirmed h2 { font-size: 1.3rem; }
.account-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-block: 2rem; }
.account-actions form { margin: 0; }
.password-rules { color: #8a4c00; font-size: .9rem; }
.password-rules .is-valid { color: #216638; }
.design-site .empty-state { border: 1px dashed #98ad9d; border-radius: var(--radius); background: white; padding: 2rem; box-shadow: none; }
.sample-lesson { max-width: 850px; margin-inline: auto !important; }
.sample-question { padding: 1.5rem; background: var(--color_soft); border-radius: 10px; margin-block: 2rem; }
.sample-question summary { cursor: pointer; }
.design-site .site-footer { max-width: none; margin: 0; padding: 3.5rem max(2rem, calc((100vw - 1264px) / 2)); background: var(--ink); color: #dce9de; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; border: 0; }
.site-footer strong { color: white; font-size: 1.55rem; letter-spacing: -.05em; }
.site-footer strong span { color: var(--color_secondary); }
.site-footer p { font-size: .85rem; }
.footer-links { display: flex; flex-direction: column; gap: .8rem; align-items: flex-start; justify-self: end; }
.design-site .footer-links a { color: #dce9de; padding-block: .25rem; }
.footer-note { grid-column: 1 / -1; border-top: 1px solid #ffffff25; padding-top: 1.5rem; margin: 0; }
/* Composition éditoriale publique et espace de travail distinct. */
.design-site main { width: 100%; box-sizing: border-box; }
.design-site h1 em { font-family: Georgia, serif; font-weight: 400; letter-spacing: -.055em; color: var(--color_primary); }
.public-site .site-nav { max-width: none; margin: auto; padding: 1.1rem max(1.5rem, calc((100vw - 1264px) / 2)); background: white; border-bottom: 1px solid var(--color_border); }
.public-site main { padding-top: 2.5rem; }
.public-site .hero { background: transparent; color: var(--ink); padding: 2.5rem 0 3.5rem; border-radius: 0; }
.public-site .landing-hero { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); min-height: 560px; gap: clamp(2rem, 5vw, 5rem); }
.public-site .hero h1 { font-size: clamp(2.8rem, 4.9vw, 4.9rem); font-weight: 600; letter-spacing: -.055em; }
.public-site .hero .eyebrow { color: var(--color_primary); font-size: .7rem; letter-spacing: .09em; }
.public-site .hero-copy > p:not(.eyebrow):not(.hero-note) { color: var(--color_muted); max-width: 40ch; font-size: 1.1rem; }
.public-site .hero a.action { background: var(--color_primary); border-color: var(--color_primary); color: white; }
.public-site .hero .text-link { color: var(--ink); }
.public-site .hero .hero-note { color: var(--color_muted); }
.public-site .hero a:focus-visible { outline-color: var(--color_primary); }
.public-site .hero-workspace { padding: 1.5rem; border: 1px solid var(--brand-border); border-radius: 4px; background: var(--brand-soft); border-top: 4px solid var(--brand-green); }
.public-site .workspace-caption { color: var(--color_primary); font-size: .62rem; letter-spacing: .07em; }
.public-site .workspace-caption > span:last-child { font-size: inherit; }
.public-site .sample-sheet { box-shadow: 0 6px 0 var(--brand-sage); transform: rotate(-3deg); border: 1px solid var(--brand-border); border-radius: 2px; padding: 2rem; background: white; }
.public-site .sample-sheet:hover, .public-site .sample-sheet:focus-visible { transform: rotate(0); border-color: var(--brand-green); }
.public-site .sample-sheet .eyebrow { color: var(--color_muted); }
.public-site .sample-sheet .text-link { color: var(--color_primary); }
.public-site .workspace-label { position: static; transform: none; padding: 1.4rem 0 0; box-shadow: none; background: transparent; font-weight: 400; color: var(--brand-muted); text-align: center; }
.format-strip { background: transparent; border-block: 1px solid var(--color_border); padding: 1.7rem 0; margin-top: 1.5rem; }
.benefit-grid { gap: 1.5rem; border: 0; border-radius: 0; overflow: visible; }
.benefit-grid article, .benefit-grid article:nth-child(2), .benefit-grid article:nth-child(3) { background: white; border: 1px solid var(--brand-border); border-radius: 8px; }
.benefit-grid article + article { border-left: 1px solid var(--color_border); }
.step-number { display: inline-grid; place-items: center; width: 44px; height: 44px; border: 0; border-bottom: 2px solid var(--brand-green); border-radius: 0; font: italic 1.5rem Georgia, serif; color: var(--color_primary); }
.design-site .shop-heading h1 { font-size: clamp(2.5rem, 4vw, 4rem); }
.design-site .catalog-grid .pack-card { padding: 1.5rem; border: 1px solid var(--brand-border); border-radius: 10px; background: white; overflow: hidden; }
.pack-cover { position: relative; width: 100%; box-sizing: border-box; height: 125px; background: var(--brand-soft); border-radius: 6px; margin-bottom: 1.5rem; padding: 1rem; overflow: hidden; color: var(--brand-green); }
.pack-card:nth-child(3n+2) .pack-cover { background: var(--brand-stone); color: var(--brand-green); }
.pack-card:nth-child(3n+3) .pack-cover { background: #e4efec; color: #285f50; }
.cover-index, .cover-caption { position: relative; z-index: 1; font-size: .6rem; letter-spacing: .1em; }
.cover-caption { position: absolute; bottom: 1rem; left: 1rem; }
.cover-pages { position: absolute; width: 125px; height: 140px; left: 72%; top: 24px; transform: translateX(-50%) rotate(8deg); }
.cover-pages span { position: absolute; inset: 0; padding: 1rem; background: white; border: 1px solid currentColor; border-radius: 3px; box-shadow: 0 4px 10px #23262a0a; font: 1.25rem/1.2 Georgia, serif; overflow-wrap: anywhere; }
.cover-pages span:first-child { transform: rotate(16deg); background: #ffffff70; }
.cover-pages span:nth-child(2) { transform: rotate(8deg); }
.cover-pages span:last-child::after { content: ''; display: block; height: 45px; margin-top: 1rem; background: repeating-linear-gradient(transparent 0 10px, var(--brand-border) 10px 11px); }
.design-site .pack-card h2 { font-size: 1.8rem; }
.design-site .pack-purchase { align-items: center; gap: .75rem; }
.design-site .pack-purchase .action { font-size: .85rem; padding-inline: 1rem; }
.design-site .subject-card { background: white; border-top: 3px solid var(--brand-green); }
.subject-card-meta { display: flex; align-items: center; justify-content: space-between; gap: .75rem; }
.design-site .subject-card .course-number { color: var(--color_primary); background: var(--brand-soft); border-radius: 6px; padding: .35rem .5rem; font-size: 1rem; margin-bottom: 0; letter-spacing: normal; }
.design-site .subject-card-meta .subject-level { font-size: .7rem; padding: .25rem .5rem; }
.design-site .resource-card { padding: 1rem; border-radius: 14px; overflow: hidden; }
.resource-art { display: flex; min-height: 125px; padding: 1rem; background: var(--brand-soft); align-items: end; justify-content: space-between; gap: 1rem; border-radius: 8px; margin-bottom: 1rem; color: var(--brand-green); }
.resource-art > span { font: 3.8rem/1 Georgia, serif; }
.resource-art small { font-size: .65rem; max-width: 55%; text-align: right; }
.resource-art-video { background: var(--brand-charcoal); color: #fff; }
.resource-art-video > span { font: 2.3rem/1 system-ui; padding: .7rem; border: 1px solid #ffffff70; border-radius: 50%; }
.resource-art-slides { background: var(--brand-stone); color: var(--brand-green); }
.workspace-site .page-heading h1 { font-size: clamp(2rem, 3.5vw, 3.2rem); }
.workspace-site .dashboard-metrics { background: transparent; padding: 0; border: 0; gap: 1rem; }
.workspace-site .dashboard-metrics > div { background: white; border: 1px solid var(--color_border); border-radius: 12px; padding: 1.25rem; }
.workspace-site .dashboard-metrics > a { padding: 1.25rem; }
.workspace-site .site-footer { background: transparent; color: var(--color_muted); border-top: 1px solid var(--color_border); padding: 2rem; }
.workspace-site .site-footer strong, .workspace-site .footer-links a { color: var(--ink); }
.workspace-site .footer-note { border-color: var(--color_border); }
.design-site .auth-intro { padding: 2.5rem; background: transparent; border-left: 3px solid var(--brand-green); border-radius: 0; display: flex; flex-direction: column; justify-content: center; }
.design-site .contact-help { border-left: 3px solid var(--color_secondary); border-radius: 0; }
@media (max-width: 1100px) {
    .design-site .site-nav { flex-wrap: wrap; }
    .landing-hero { gap: 2rem; padding: 2.5rem; }
    .design-site .hero h1 { font-size: 3.3rem; }
    .shop-heading { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 900px) {
    .public-site .landing-hero { grid-template-columns: 1fr; gap: 2.5rem; min-height: auto; }
    .public-site .hero { padding: 1.5rem 0 2rem; }
    .public-site .hero h1 { font-size: clamp(2.6rem, 7vw, 4rem); }
    .design-site main { padding: 2rem 1.5rem 3rem; }
    .design-site .site-nav { padding: .8rem 1.5rem; }
    .design-site .site-brand { flex-basis: auto; }
    .design-site .navigation-links { width: min(340px, 92vw); background: white; padding: .75rem; box-shadow: 0 18px 30px #23262a18; border: 1px solid var(--color_border); border-radius: 0 0 12px 0; gap: .25rem; }
    .design-site .navigation-links a { justify-content: flex-start; font-size: .95rem; padding: .8rem 1rem; }
    .landing-hero { grid-template-columns: 1fr; min-height: auto; }
    .hero-workspace { width: min(100%, 430px); margin-inline: auto; }
    .design-site .hero h1 { font-size: clamp(2.6rem, 7vw, 4rem); }
    .hero-copy > p:not(.eyebrow):not(.hero-note) { max-width: 52ch; }
    .design-site .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .home-dashboard, .checkout-layout, .design-site .reader-layout { grid-template-columns: 1fr; }
    .benefit-grid { gap: .75rem; }
    .benefit-grid article { padding: 1.4rem; }
    .landing-closing { padding: 2rem; }
    .auth-layout { gap: 2rem; }
}
@media (min-width: 601px) and (max-width: 900px) {
    .design-site main > .catalog-filters { flex-wrap: wrap; }
    .catalog-filters label { flex: 1 1 150px; }
    .catalog-filter-actions { margin-left: auto; }
}
@media (max-width: 600px) {
    .design-site main > .catalog-filters { flex-wrap: wrap; }
    .design-site .site-nav { padding: .75rem; gap: .5rem; flex-wrap: nowrap; }
    .design-site .site-nav .site-brand .brand-logo { width: 140px; max-width: 43vw; }
    .design-site .site-nav .nav-toggle { padding-inline: .8rem; flex-shrink: 0; }
    .public-site .hero h1 { font-size: clamp(2.2rem, 8vw, 3rem); }
    .public-site .hero-workspace { width: 100%; box-sizing: border-box; padding: 1.3rem; }
    .public-site .sample-sheet { transform: none; }
    .public-site .workspace-label { right: 0; }
    .design-site main > .catalog-filters { gap: .75rem; }
    .catalog-filters label, .catalog-filters label:first-child { flex: 1 1 100%; }
    .catalog-filter-actions { width: 100%; flex-wrap: wrap; justify-content: space-between; }
    .catalog-filter-actions button { flex: 1; width: auto; }
    .benefit-grid article + article { border-left: 0; border-top: 1px solid var(--color_border); }
    .design-site .auth-intro { padding: 1rem; }
    .shop-help { grid-template-columns: 1fr; gap: 1rem; margin-top: 2.5rem; }
    .catalog-filters { padding: 1rem; }
    .catalog-filters button { width: 100%; }
    .design-site main { padding: 1.5rem 1rem 3rem; }
    .design-site .hero { padding: 1.25rem 0; border-radius: 0; }
    .design-site .hero h1 { font-size: clamp(2rem, 8vw, 3rem); }
    .design-site .hero .eyebrow { font-size: .7rem; }
    .design-site .hero-actions { align-items: stretch; flex-direction: column; gap: 1rem; }
    .hero-actions .text-link { padding: .5rem; text-align: center; }
    .design-site .sample-sheet { padding: 1.3rem; transform: none; }
    .workspace-label { right: 0; font-size: .7rem; }
    .format-strip { display: grid; grid-template-columns: 1fr 1fr; font-size: .75rem; margin-bottom: 2.5rem; }
    .benefit-grid, .design-site .catalog-grid, .auth-layout, .contact-layout { grid-template-columns: 1fr; }
    .benefit-grid article { padding: 1.5rem; }
    .benefit-grid h2 { margin-top: 1rem; }
    .landing-closing { flex-direction: column; align-items: flex-start; }
    .landing-closing a.action { width: 100%; }
    .dashboard-metrics { grid-template-columns: 1fr 1fr; gap: 1rem; }
    .dashboard-metrics > a { grid-column: 1 / -1; justify-self: start; padding-block: .5rem; }
    .dashboard-metrics > div { gap: .7rem; }
    .dashboard-metrics strong { font-size: 2.3rem; }
    .dashboard-metrics span { font-size: .75rem; }
    .resume-card { padding: 1.5rem; }
    .resume-card h2 { font-size: 1.7rem; }
    .design-site .library-filters { padding: 1rem; }
    .design-site .library-filters button, .design-site .library-filters .action { flex: 1 1 120px; }
    .design-site .media-reader { padding: .5rem; }
    .design-site #pdf-pages { height: 60dvh; }
    .design-site .site-footer { grid-template-columns: 1fr; padding: 2.5rem 1.5rem; }
    .footer-links { justify-self: start; }
    .auth-layout { margin-block: .5rem; }
    .auth-intro h1 { font-size: 1.9rem; line-height: 1.2; }
}
@media (prefers-reduced-motion: reduce) {
    .design-site *, .design-site *::before, .design-site *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Logo officiel : proportions conservées, y compris dans le menu mobile. */
.design-site .site-brand .brand-logo { display: block; width: 210px; max-width: 48vw; height: auto; }

/* Fonds neutres et accents de marque limités aux éléments utiles. */
.design-site .site-nav { background: #fff; border-bottom: 1px solid var(--brand-border); }
.design-site .site-brand:hover { background: #fff; }
.design-site .landing-closing { background: var(--brand-soft); }
.design-site .site-footer { background: #fff; }
.design-site .workspace-label { background: var(--brand-sage); color: var(--brand-charcoal); }

/* Version claire : aucun grand panneau sombre, couleurs explicites pour ses enfants. */
.design-site .landing-closing,
.design-site .resume-card,
.design-site .checkout-summary {
    background: white;
    color: var(--brand-charcoal);
    border: 1px solid var(--brand-border);
    border-top: 3px solid var(--brand-green);
    box-shadow: none;
}
.design-site .landing-closing h2,
.design-site .resume-card h2,
.design-site .checkout-summary h2,
.design-site .checkout-summary .checkout-price { color: var(--brand-charcoal); }
.design-site .landing-closing .eyebrow,
.design-site .resume-card .eyebrow { color: var(--brand-green); }
.design-site .resume-card p,
.design-site .checkout-summary p { color: var(--brand-muted); }
.design-site .checkout-summary a { color: var(--brand-green); text-decoration: underline; }
.design-site .checkout-summary .access-note { background: var(--brand-soft); color: var(--brand-charcoal); }
.design-site .landing-closing a.action,
.design-site .resume-card a.action { background: var(--brand-green); border-color: var(--brand-green); color: #fff !important; }
.design-site .landing-closing a.action:hover,
.design-site .resume-card a.action:hover { background: var(--brand-hover); border-color: var(--brand-hover); }
.design-site .site-footer {
    background: #fff;
    color: var(--brand-charcoal);
    border-top: 1px solid var(--brand-border);
}
.design-site .site-footer strong { color: var(--brand-green); }
.design-site .site-footer strong span { color: var(--brand-green); }
.design-site .site-footer p { color: var(--brand-muted); }
.design-site .site-footer .footer-links a { color: var(--brand-green); text-decoration: underline; text-underline-offset: .25em; }
.design-site .site-footer .footer-links a:hover { color: var(--brand-hover); }
.design-site .site-footer .footer-note { border-top-color: var(--brand-border); }
.design-site .resource-art-video { background: var(--brand-soft); color: var(--brand-green); }
.design-site .resource-art-video > span { border-color: var(--brand-border); }

/* Fiche de démonstration : retrouver le relief d'une feuille posée sur le bureau. */
.public-site .hero-workspace {
    position: relative; isolation: isolate; padding: 2rem 1.5rem 3.5rem;
    border: 0; border-radius: 48% 48% 16px 16px;
    background: var(--brand-soft); width: 100%; min-width: 0;
}
.public-site .workspace-caption { position: relative; gap: 1rem; margin-bottom: 1.5rem; padding: 0 .5rem; font-size: .65rem; }
.public-site .sample-sheet {
    background: #fffefa; border: 1px solid var(--brand-border); border-radius: 12px;
    padding: clamp(1.5rem, 3vw, 2.5rem); transform: rotate(-4deg);
    box-shadow: 10px 12px 0 var(--brand-sage), 0 20px 40px #17342614;
    transition: transform .22s ease, box-shadow .22s ease;
}
.public-site .sample-sheet:hover, .public-site .sample-sheet:focus-visible { transform: rotate(0); box-shadow: 7px 9px 0 var(--brand-sage), 0 16px 30px #17342618; }
.public-site .sample-sheet h2 { font-size: clamp(2.4rem, 3.5vw, 3.6rem); line-height: 1.07; margin-block: 1.5rem; }
.public-site .sample-sheet .eyebrow { letter-spacing: .08em; font-size: .75rem; }
.public-site .sample-equation { background: repeating-linear-gradient(transparent 0 25px, var(--brand-border) 25px 26px), var(--brand-soft); margin-block: 1.25rem; font-size: clamp(1.5rem, 2.5vw, 2.1rem); }
.public-site .sample-sheet .text-link { border-top: 0; padding-top: .4rem; }
.public-site .workspace-label {
    position: absolute; z-index: 1; right: -.4rem; bottom: .6rem;
    max-width: 85%; padding: .9rem 1.1rem; border-radius: 3px;
    transform: rotate(3deg); background: var(--brand-sage); color: var(--brand-charcoal);
    box-shadow: 0 10px 22px #17342614; font-weight: 650; font-size: .85rem;
    pointer-events: none;
}
@media (max-width: 600px) {
    .public-site .hero-workspace { padding: 1.4rem 1rem 3.5rem; }
    .public-site .sample-sheet { transform: rotate(-2deg); padding: 1.4rem; box-shadow: 6px 8px 0 var(--brand-sage); }
    .public-site .sample-sheet h2 { font-size: clamp(2rem, 9vw, 2.7rem); }
    .public-site .workspace-caption { font-size: .6rem; }
    .public-site .workspace-label { right: 0; font-size: .75rem; }
}
@media (prefers-reduced-motion: reduce) {
    .public-site .sample-sheet, .public-site .sample-sheet:hover, .public-site .sample-sheet:focus-visible { transform: none; transition: none; }
}