/* ============================================
   L'HÉRITAGE D'OR — charte graphique
   Guide indépendant de l'or des particuliers
   ============================================ */

:root {
    --ivoire: #faf6ee;
    --papier: #f4eedf;
    --encre: #221c12;
    --encre-douce: #56503f;
    --or: #8b4513;
    --or-clair: #b87333;
    --vert: #3d2b1f;
    --filet: #ddd3bc;
    --serif: "Cormorant Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --texte: "Source Serif 4", Georgia, "Times New Roman", serif;
    --etiquette: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --pad: clamp(20px, 5vw, 56px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    background: var(--ivoire);
    color: var(--encre);
    font-family: var(--texte);
    font-size: 1.05rem;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img { display: block; max-width: 100%; }

h1, h2, h3 {
    font-family: var(--serif);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.01em;
}

.marque .accent {
    color: var(--or);
    font-style: italic;
}

/* ---------- bandeau cours ---------- */

.bandeau {
    background: var(--vert);
    color: #e9e2cf;
    font-family: var(--etiquette);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-align: center;
    padding: 9px var(--pad);
}

.bandeau strong { color: var(--or-clair); font-weight: 600; }

/* ---------- ticker cours live (bandeau défilant) ---------- */

.cours-ticker {
    background: var(--encre);
    color: #e9e2cf;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.cours-ticker-bar {
    display: flex;
    align-items: stretch;
    min-height: 38px;
}

.cours-ticker-badge {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    font-family: var(--etiquette);
    font-size: 0.58rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--encre);
    background: var(--or-clair);
    padding: 0 14px;
    z-index: 2;
    box-shadow: 6px 0 14px rgba(0, 0, 0, 0.35);
}

.cours-ticker-viewport {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    mask-image: linear-gradient(90deg, transparent 0%, #000 3%, #000 97%, transparent 100%);
}

.cours-ticker-track {
    display: flex;
    align-items: center;
    gap: clamp(28px, 4vw, 52px);
    width: max-content;
    padding: 0 24px;
    will-change: transform;
    animation: ticker-scroll 38s linear infinite;
}

.cours-ticker-track.is-loading {
    opacity: 0.5;
    animation-play-state: paused;
}

.cours-ticker-viewport:hover .cours-ticker-track {
    animation-play-state: paused;
}

.cours-item {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    font-family: var(--etiquette);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.cours-label {
    color: #9a927c;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.6rem;
}

.cours-item strong {
    color: var(--ivoire);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.cours-var {
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.cours-var.hausse { color: #7ecf8e; }
.cours-var.baisse { color: #e88888; }

.cours-sep {
    color: var(--or);
    opacity: 0.5;
    font-size: 0.5rem;
    flex-shrink: 0;
}

.cours-erreur {
    color: #cfc7b2;
    font-size: 0.68rem;
}

.cours-erreur a { color: var(--or-clair); }

.cours-ticker-maj {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    font-family: var(--etiquette);
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #8a8370;
    white-space: nowrap;
    padding: 0 14px;
    background: var(--encre);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 2;
    box-shadow: -6px 0 14px rgba(0, 0, 0, 0.35);
}

@keyframes ticker-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(calc(-100% / var(--ticker-copies, 2))); }
}

@media (prefers-reduced-motion: reduce) {
    .cours-ticker-track { animation: none; }
}

/* ---------- header ---------- */

.entete {
    border-bottom: 1px solid var(--filet);
    background: var(--ivoire);
}

.entete-haut {
    max-width: 1080px;
    margin: 0 auto;
    padding: clamp(26px, 4vw, 44px) var(--pad) clamp(18px, 3vw, 30px);
    text-align: center;
}

.marque {
    font-family: var(--serif);
    font-size: clamp(2rem, 5.5vw, 3.4rem);
    font-weight: 600;
    letter-spacing: 0.02em;
    text-decoration: none;
    display: inline-block;
    line-height: 1;
}

.marque .ampersande { color: var(--or); font-style: italic; }

.devise {
    font-family: var(--etiquette);
    font-size: 0.66rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--encre-douce);
    margin-top: 10px;
}

.navigation {
    border-top: 1px solid var(--filet);
}

.navigation ul {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--pad);
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: clamp(14px, 3vw, 34px);
}

.navigation a {
    display: block;
    padding: 13px 2px;
    font-family: var(--etiquette);
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--encre);
    border-bottom: 2px solid transparent;
    transition: color 0.25s, border-color 0.25s;
}

.navigation a:hover, .navigation a[aria-current="page"] {
    color: var(--or);
    border-bottom-color: var(--or);
}

/* ---------- hero ---------- */

.hero {
    max-width: 880px;
    margin: 0 auto;
    padding: clamp(56px, 9vw, 110px) var(--pad) clamp(40px, 6vw, 70px);
    text-align: center;
}

.hero .surtitre {
    font-family: var(--etiquette);
    font-size: 0.68rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--or);
    margin-bottom: 22px;
}

.hero h1 {
    font-size: clamp(2.2rem, 6vw, 4rem);
    margin-bottom: 24px;
}

.hero p {
    max-width: 620px;
    margin: 0 auto;
    color: var(--encre-douce);
    font-size: 1.1rem;
}

.ornement {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: clamp(28px, 5vw, 44px) auto 0;
    color: var(--or);
}

.ornement::before, .ornement::after {
    content: "";
    width: 70px;
    height: 1px;
    background: var(--filet);
}

/* ---------- visuels ---------- */

.hero-bandeau {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--pad) clamp(40px, 6vw, 70px);
}

.hero-bandeau img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    border: 1px solid var(--filet);
}

.une-visuel {
    display: flex;
    justify-content: center;
}

.une-visuel img {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    object-position: center;
    display: block;
    border: 1px solid var(--filet);
}

.carte-visuel {
    overflow: hidden;
    margin: 0 0 4px;
    border: 1px solid var(--filet);
    background: var(--papier);
    aspect-ratio: 16 / 10;
}

.carte-visuel img {
    width: 100%;
    height: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.45s ease;
}

.carte:hover .carte-visuel img { transform: scale(1.04); }

/* Hero d'article — .article-hero (pages) + .article-visuel (alias) */
.article-hero,
.article-visuel {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 var(--pad) clamp(28px, 4vw, 48px);
}

.article-hero img,
.article-visuel img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: center;
    display: block;
    margin: 0 auto;
    border: 1px solid var(--filet);
    background: var(--papier);
}

.article-hero figcaption,
.article-visuel figcaption {
    font-family: var(--etiquette);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--encre-douce);
    margin-top: 10px;
    text-align: center;
}

.section-bandeau {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--pad) clamp(40px, 6vw, 60px);
}

.section-bandeau img {
    width: 100%;
    aspect-ratio: 3 / 1;
    object-fit: cover;
    display: block;
    border: 1px solid var(--filet);
    opacity: 0.92;
}

/* ---------- grille d'articles ---------- */

.section {
    max-width: 1080px;
    margin: 0 auto;
    padding: clamp(40px, 7vw, 80px) var(--pad);
}

.section-titre {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 20px;
    border-bottom: 2px solid var(--encre);
    padding-bottom: 14px;
    margin-bottom: clamp(28px, 5vw, 48px);
}

.section-titre h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
}

.section-titre span {
    font-family: var(--etiquette);
    font-size: 0.66rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--encre-douce);
    white-space: nowrap;
}

.grille {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: clamp(24px, 4vw, 44px);
}

.carte {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--filet);
    transition: opacity 0.25s;
    min-width: 0;
}

.carte:hover { opacity: 0.78; }

.carte .rubrique {
    font-family: var(--etiquette);
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--or);
}

.carte h3 {
    font-size: clamp(1.25rem, 2.4vw, 1.55rem);
}

.carte p {
    color: var(--encre-douce);
    font-size: 0.94rem;
    line-height: 1.65;
}

.carte .lire {
    font-family: var(--etiquette);
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--encre);
    margin-top: auto;
}

/* ---------- article à la une ---------- */

.une {
    background: var(--papier);
    border-top: 1px solid var(--filet);
    border-bottom: 1px solid var(--filet);
}

.une-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: clamp(48px, 7vw, 90px) var(--pad);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(30px, 6vw, 80px);
    align-items: center;
}

@media (max-width: 820px) {
    .une-inner { grid-template-columns: 1fr; }
}

.une h2 {
    font-size: clamp(1.8rem, 4.5vw, 2.9rem);
    margin: 14px 0 18px;
}

.une p { color: var(--encre-douce); }

.medaillon {
    aspect-ratio: 1;
    max-width: 380px;
    margin: 0 auto;
    border-radius: 50%;
    border: 1px solid var(--or);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    position: relative;
}

.medaillon::before {
    content: "";
    position: absolute;
    inset: 12px;
    border-radius: 50%;
    border: 1px dashed var(--or-clair);
    opacity: 0.6;
}

.medaillon-int {
    text-align: center;
    font-family: var(--serif);
}

.medaillon-int .gros {
    font-size: clamp(3rem, 7vw, 4.6rem);
    color: var(--or);
    line-height: 1;
}

.medaillon-int .petit {
    font-family: var(--etiquette);
    font-size: 0.64rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--encre-douce);
    margin-top: 12px;
}

/* ---------- boutons ---------- */

.bouton {
    display: inline-block;
    font-family: var(--etiquette);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--ivoire);
    background: var(--encre);
    padding: 15px 30px;
    transition: background 0.25s;
}

.bouton:hover { background: var(--vert); }

.bouton-ligne {
    display: inline-block;
    font-family: var(--etiquette);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--encre);
    border: 1px solid var(--encre);
    padding: 14px 28px;
    transition: all 0.25s;
}

.bouton-ligne:hover { background: var(--encre); color: var(--ivoire); }

/* ---------- corps d'article ---------- */

.article-entete {
    max-width: 760px;
    margin: 0 auto;
    padding: clamp(48px, 8vw, 90px) var(--pad) clamp(28px, 4vw, 44px);
    text-align: center;
}

.article-entete .rubrique {
    font-family: var(--etiquette);
    font-size: 0.66rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--or);
    margin-bottom: 18px;
}

.article-entete h1 {
    font-size: clamp(2rem, 5.5vw, 3.4rem);
    margin-bottom: 20px;
}

.article-entete .chapo {
    color: var(--encre-douce);
    font-size: 1.12rem;
    font-style: italic;
}

.article-entete .meta {
    font-family: var(--etiquette);
    font-size: 0.64rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--encre-douce);
    margin-top: 22px;
}

.article-corps {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 var(--pad) clamp(50px, 8vw, 90px);
}

.article-corps > p, .article-corps li { color: #332d20; }

.article-corps p { margin-bottom: 22px; }

.article-corps h2 {
    font-size: clamp(1.5rem, 3.2vw, 2rem);
    margin: 44px 0 18px;
}

.article-corps h3 {
    font-size: clamp(1.2rem, 2.4vw, 1.4rem);
    margin: 32px 0 14px;
}

.article-corps ul, .article-corps ol {
    margin: 0 0 22px 22px;
}

.article-corps li { margin-bottom: 10px; }

.article-corps a { color: var(--vert); text-decoration-color: var(--or-clair); }

.article-corps a:hover { color: var(--or); }

.lettrine::first-letter {
    font-family: var(--serif);
    font-size: 3.4em;
    float: left;
    line-height: 0.82;
    padding: 4px 10px 0 0;
    color: var(--or);
}

blockquote {
    border-left: 3px solid var(--or);
    padding: 6px 0 6px 24px;
    margin: 30px 0;
    font-family: var(--serif);
    font-size: 1.3rem;
    font-style: italic;
    line-height: 1.4;
    color: var(--vert);
}

/* ---------- encadrés ---------- */

.encadre {
    background: var(--papier);
    border: 1px solid var(--filet);
    border-top: 3px solid var(--or);
    padding: clamp(22px, 4vw, 34px);
    margin: 34px 0;
}

.encadre .encadre-titre {
    font-family: var(--etiquette);
    font-size: 0.66rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--or);
    margin-bottom: 12px;
}

.encadre h3 { margin: 0 0 10px; }

.encadre p { margin-bottom: 12px; font-size: 0.98rem; }

.encadre p:last-child { margin-bottom: 0; }

/* ---------- tableau ---------- */

table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    font-size: 0.95rem;
}

th, td {
    text-align: left;
    padding: 12px 14px;
    border-bottom: 1px solid var(--filet);
}

th {
    font-family: var(--etiquette);
    font-size: 0.64rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--encre-douce);
    border-bottom: 2px solid var(--encre);
}

/* ---------- FAQ ---------- */

.faq details {
    border-bottom: 1px solid var(--filet);
    padding: 6px 0;
}

.faq summary {
    cursor: pointer;
    font-family: var(--serif);
    font-size: 1.2rem;
    font-weight: 600;
    padding: 14px 0;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
    content: "+";
    font-family: var(--serif);
    color: var(--or);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.faq details[open] summary::after { content: "−"; }

.faq details p { padding: 0 0 18px; color: var(--encre-douce); }

/* ---------- navigation entre guides ---------- */

.suite {
    border-top: 1px solid var(--filet);
    background: var(--papier);
}

.suite-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: clamp(40px, 6vw, 70px) var(--pad);
}

.suite h2 {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    margin-bottom: 30px;
    text-align: center;
}

/* ---------- pied de page ---------- */

.pied {
    background: var(--encre);
    color: #cfc7b2;
    margin-top: 0;
}

.pied-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: clamp(48px, 7vw, 80px) var(--pad) 40px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: clamp(30px, 5vw, 60px);
}

@media (max-width: 760px) {
    .pied-inner { grid-template-columns: 1fr; }
}

.pied .marque-pied {
    font-family: var(--serif);
    font-size: 1.7rem;
    color: var(--ivoire);
    text-decoration: none;
}

.pied .marque-pied .ampersande { color: var(--or-clair); font-style: italic; }

.pied p {
    font-size: 0.88rem;
    line-height: 1.7;
    margin-top: 14px;
    max-width: 380px;
}

.pied h4 {
    font-family: var(--etiquette);
    font-size: 0.64rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--or-clair);
    margin-bottom: 16px;
    font-weight: 600;
}

.pied ul { list-style: none; }

.pied li { margin-bottom: 10px; }

.pied a {
    color: #cfc7b2;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.25s;
}

.pied a:hover { color: var(--ivoire); }

.pied-bas {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 22px var(--pad);
    text-align: center;
    font-family: var(--etiquette);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #8a8370;
}

/* ---------- mobile ---------- */

@media (max-width: 640px) {
    body { font-size: 1rem; }

    .navigation ul {
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 18px;
        padding-bottom: 6px;
    }

    .navigation ul::-webkit-scrollbar { display: none; }

    .navigation a {
        font-size: 0.62rem;
        white-space: nowrap;
        padding: 11px 0;
    }

    .hero {
        padding-top: clamp(36px, 8vw, 56px);
        padding-bottom: clamp(28px, 6vw, 44px);
    }

    .hero h1 { font-size: clamp(1.75rem, 8.5vw, 2.35rem); }

    .hero p { font-size: 1rem; }

    .section-titre {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .section-titre span { white-space: normal; }

    .grille { grid-template-columns: 1fr; }

    .article-entete {
        padding-top: clamp(32px, 7vw, 48px);
        text-align: left;
    }

    .article-entete h1 { font-size: clamp(1.65rem, 7.5vw, 2.2rem); }

    .article-entete .chapo { font-size: 1rem; }

    .article-hero img,
    .article-visuel img { aspect-ratio: 4 / 3; }

    .article-hero figcaption,
    .article-visuel figcaption { text-align: left; }

    .carte-visuel,
    .carte-visuel img { aspect-ratio: 3 / 2; }

    .article-corps table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        font-size: 0.88rem;
    }

    .lettrine::first-letter { font-size: 2.6em; }

    blockquote { font-size: 1.12rem; }

    .encadre { padding: 18px; }

    .bouton, .bouton-ligne {
        display: block;
        text-align: center;
        width: 100%;
    }

    .section-bandeau img { aspect-ratio: 16 / 9; }

    .cours-ticker-maj {
        font-size: 0.52rem;
        padding: 0 10px;
    }

    .cours-item { font-size: 0.66rem; }
}

@media (max-width: 380px) {
    .marque { font-size: 1.75rem; }

    .devise {
        letter-spacing: 0.18em;
        font-size: 0.58rem;
    }
}