/* ============================================================
   Protocole 28 jours — Sales page
   Mobile first. Noir chaud + parchemin. JS minimal pour reveals.
   ============================================================ */

:root {
    --bg:            #0A0908;
    --bg-elevated:   #13110E;
    --bg-deeper:     #060504;
    --ink:           #E8E2D5;
    --ink-soft:      #A8A196;
    --ink-faint:     #6B6760;
    --gold:          #B8935A;
    --gold-bright:   #D1AF77;
    --gold-deep:     #8B6F3F;
    --gold-soft:     rgba(184, 147, 90, 0.85);
    --rule:          rgba(184, 147, 90, 0.18);
    --rule-strong:   rgba(184, 147, 90, 0.45);

    --serif:         'Newsreader', Georgia, 'Times New Roman', serif;
    --display:       'Cormorant Garamond', Georgia, serif;

    --measure:       620px;
    --pad-x-mobile:  22px;
    --pad-x-desktop: 32px;

    --ease-out:      cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html { scroll-behavior: smooth; }

html, body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.7;
    font-weight: 400;
    font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    -webkit-tap-highlight-color: transparent;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* ============================================================
   Reading progress
   ============================================================ */
.reading-progress {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 1.5px;
    background: rgba(184, 147, 90, 0.08);
    z-index: 100;
}

.reading-progress span {
    display: block;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--gold-deep), var(--gold-bright));
    transform-origin: left center;
    transform: scaleX(0);
    transition: transform 80ms linear;
}

/* ============================================================
   Page container & atmosphère
   ============================================================ */
.page {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding-bottom: 80px;
}

.page::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 28%, rgba(184, 147, 90, 0.05) 0%, transparent 70%),
        radial-gradient(ellipse at 50% 60%, #15120D 0%, #0A0807 50%, #050403 100%);
    z-index: -2;
    pointer-events: none;
}

.page::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

/* ============================================================
   Reveals — état initial caché, transition au .is-visible
   ============================================================ */
[data-reveal] {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
    will-change: opacity, transform;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
    font-family: var(--serif);
    font-size: 12.5px;
    font-style: italic;
    line-height: 1.6;
    color: var(--ink-faint);
    text-align: center;
    letter-spacing: 0.02em;
    max-width: 380px;
    margin: 28px auto 0;
    padding: 0 var(--pad-x-mobile);
}

/* ============================================================
   Hero typographique — frontispice + suscription de lettre (h1)
   ============================================================ */
.hero {
    text-align: center;
    padding: 36px var(--pad-x-mobile) 24px;
    max-width: 760px;
    margin: 0 auto;
    position: relative;
}

/* Halo de lumière chaude ambiante, comme une bougie posée à côté */
.hero::before {
    content: '';
    position: absolute;
    inset: -80px -60px -40px -60px;
    background:
        radial-gradient(ellipse 78% 65% at 50% 38%,
            rgba(184, 147, 90, 0.13) 0%,
            rgba(184, 147, 90, 0.05) 30%,
            transparent 70%);
    pointer-events: none;
    z-index: -1;
    filter: blur(10px);
}

/* Eyebrow — devient la seule pièce de texte du hero, donc porte le poids */
.hero-eyebrow {
    font-family: var(--serif);
    font-style: normal;
    font-weight: 400;
    font-size: 24px;
    line-height: 1.4;
    letter-spacing: 0.003em;
    color: var(--ink);
    max-width: 540px;
    margin: 36px auto 0;
    text-wrap: balance;
    hanging-punctuation: first;
    font-feature-settings: "kern" 1, "liga" 1, "onum" 1;
}

.hero-eyebrow em {
    font-style: italic;
    color: var(--gold);
    font-weight: 500;
}

/* Reveals staggérés : frontispice d'abord, puis la suscription */
[data-reveal].frontispiece { transition-delay: 0ms; }
[data-reveal].hero-eyebrow { transition-delay: 300ms; }

/* ============================================================
   Frontispice — petit portrait intime au top du hero
   Aucun cadre, aucune ombre. Filtré vintage + grain pour camoufler tells IA.
   ============================================================ */
.frontispiece {
    --parallax: 0px;
    /* Masque partagé img + grain : trou anti-sparkle + fade vertical + fade horizontal */
    --frontispiece-mask:
        radial-gradient(circle at 95% 92%, transparent 0 18px, #000 42px),
        linear-gradient(to bottom, transparent 0%, #000 8%, #000 88%, transparent 100%),
        linear-gradient(to right, transparent 0%, #000 5%, #000 95%, transparent 100%);
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    padding: 0;
    text-align: center;
    background: transparent;
    transform: translate3d(0, var(--parallax, 0), 0);
    transition: transform 80ms linear;
}

.frontispiece img {
    width: 100%;
    display: block;
    /* Traitement gravure d'époque : sépia tempéré + contraste poussé */
    filter:
        sepia(0.30)
        saturate(0.82)
        brightness(0.93)
        contrast(1.18);
    -webkit-mask-image: var(--frontispiece-mask);
    mask-image: var(--frontispiece-mask);
    -webkit-mask-composite: source-in;
    mask-composite: intersect;
}

/* Overlay grain : la matière de gravure ancienne */
.frontispiece::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.5  0 0 0 0 0.42  0 0 0 0 0.32  0 0 0 1 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
    background-size: 180px 180px;
    opacity: 0.22;
    mix-blend-mode: overlay;
    -webkit-mask-image: var(--frontispiece-mask);
    mask-image: var(--frontispiece-mask);
    -webkit-mask-composite: source-in;
    mask-composite: intersect;
}

/* Reveal long sur le frontispice : 1s de fade cinéma */
[data-reveal].frontispiece {
    transition-duration: 1000ms, 900ms;
}

/* ============================================================
   Ornement type imprimeur — ──── · ❦ · ────
   Marque le passage entre la page de titre et la lettre
   ============================================================ */
.hero-flourish {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    margin: 40px auto 32px;
    max-width: 280px;
    padding: 0 var(--pad-x-mobile);
}

.flourish-rule {
    flex: 1;
    max-width: 56px;
    height: 1px;
    background: var(--gold-deep);
    opacity: 0.55;
}

.flourish-mark {
    font-family: var(--display);
    color: var(--gold);
    font-size: 24px;
    line-height: 1;
    opacity: 0.9;
    user-select: none;
}

/* ============================================================
   Image insérée dans le flux (askèse / écriture)
   ============================================================ */
.inset-image {
    width: 100%;
    max-width: 580px;
    margin: 12px auto 28px;
    padding: 0 var(--pad-x-mobile);
    position: relative;
}

.inset-image img {
    width: 100%;
    display: block;
    filter:
        brightness(0.94)
        contrast(1.1)
        saturate(0.88);
    /* Masquer le sparkle Gemini bas droite + fade des bords */
    -webkit-mask-image:
        radial-gradient(circle at 95% 92%, transparent 0 26px, #000 60px),
        radial-gradient(ellipse 95% 95% at 50% 50%,
            #000 30%,
            rgba(0,0,0,0.85) 60%,
            rgba(0,0,0,0.4) 90%,
            transparent 100%);
    mask-image:
        radial-gradient(circle at 95% 92%, transparent 0 26px, #000 60px),
        radial-gradient(ellipse 95% 95% at 50% 50%,
            #000 30%,
            rgba(0,0,0,0.85) 60%,
            rgba(0,0,0,0.4) 90%,
            transparent 100%);
    -webkit-mask-composite: source-in;
    mask-composite: intersect;
}

/* ============================================================
   Lettre — corps de lecture
   ============================================================ */
.letter {
    max-width: var(--measure);
    margin: 0 auto;
    padding: 32px var(--pad-x-mobile);
}

.letter + .letter,
.letter + .citadelle,
.letter + .mechanism,
.letter + .big-number,
.letter + .phases,
.letter + .cta-block,
.letter + .guarantee,
.letter + .signature {
    /* keep external rhythm controlled by next block */
}

.letter p {
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.75;
    color: var(--ink);
    margin-bottom: 18px;
    text-wrap: pretty;
}

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

.letter em,
.gold-italic {
    font-style: italic;
    color: var(--gold);
    font-weight: 500;
}

.letter strong { color: var(--ink); font-weight: 500; }

.letter sup {
    font-size: 0.65em;
    vertical-align: super;
    line-height: 0;
    color: var(--gold);
}

/* Salutation */
.salutation {
    font-family: var(--display);
    font-style: italic;
    font-size: 24px;
    color: var(--gold);
    margin-bottom: 24px !important;
    letter-spacing: 0.01em;
}

/* Drop cap sur le premier paragraphe */
.first-paragraph {
    text-indent: 0;
}

.dropcap {
    float: left;
    font-family: var(--display);
    font-weight: 600;
    font-size: 64px;
    line-height: 0.85;
    color: var(--gold);
    padding: 6px 10px 0 0;
    margin-top: 2px;
}

/* Pensée intérieure */
.inner-thought {
    font-family: var(--display);
    font-style: italic;
    font-size: 20px;
    line-height: 1.55;
    color: var(--ink);
    padding-left: 18px;
    border-left: 1px solid var(--gold-deep);
    margin: 6px 0 24px !important;
}

/* Pivots */
.pivot {
    font-family: var(--display);
    font-weight: 600;
    font-style: italic;
    font-size: 26px !important;
    line-height: 1.32 !important;
    color: var(--ink) !important;
    text-align: left;
    margin: 32px 0 !important;
    text-wrap: balance;
}

.pivot em,
.pivot .gold-italic {
    color: var(--gold);
    font-style: italic;
}

/* Sous-titres */
.section-heading {
    font-family: var(--display);
    font-weight: 600;
    font-size: 28px;
    line-height: 1.22;
    color: var(--ink);
    margin: 40px 0 22px;
    text-wrap: balance;
}

.section-heading em {
    font-style: italic;
    color: var(--gold);
    font-weight: 600;
}

/* Mots isolés */
.single-word {
    font-family: var(--display);
    font-style: italic;
    font-weight: 500;
    font-size: 32px !important;
    color: var(--gold) !important;
    text-align: center;
    margin: 32px 0 !important;
    letter-spacing: 0.01em;
}

/* Aside */
.aside {
    font-size: 14.5px !important;
    line-height: 1.65 !important;
    color: var(--ink-soft) !important;
    font-style: italic;
    border-left: 1px solid var(--rule);
    padding-left: 16px;
    margin: 28px 0 !important;
}

/* Emphase */
.emphasis {
    font-family: var(--display);
    font-weight: 600;
    font-size: 24px !important;
    color: var(--ink) !important;
    margin: 32px 0 20px !important;
}

/* Contrat */
.contract {
    font-family: var(--display);
    font-style: italic;
    font-size: 20px !important;
    line-height: 1.55 !important;
    color: var(--ink) !important;
    border-left: 2px solid var(--gold);
    padding: 4px 0 4px 20px;
    margin: 10px 0 24px !important;
}

/* ============================================================
   La Citadelle — centerpiece
   ============================================================ */
.citadelle {
    background:
        radial-gradient(ellipse 80% 60% at 50% 30%, rgba(184, 147, 90, 0.04) 0%, transparent 70%),
        linear-gradient(to bottom, var(--bg-deeper), var(--bg), var(--bg-deeper));
    padding: 70px 0;
    margin: 24px 0;
    position: relative;
}

.citadelle::before,
.citadelle::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    max-width: 360px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-deep), transparent);
    opacity: 0.6;
}

.citadelle::before { top: 0; }
.citadelle::after  { bottom: 0; }

.citadelle-inner {
    max-width: var(--measure);
    margin: 0 auto;
    padding: 0 var(--pad-x-mobile);
}

.citadelle-inner p {
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.75;
    color: var(--ink);
    margin-bottom: 20px;
    text-wrap: pretty;
}

.citadelle-prelude {
    font-style: italic;
    color: var(--ink-soft) !important;
}

.citadelle-inner em,
.citadelle-inner .gold-italic {
    font-style: italic;
    color: var(--gold);
    font-weight: 500;
}

.citadelle-inner .pivot {
    text-align: center;
    font-size: 28px !important;
}

/* ============================================================
   Citation Marc Aurèle
   ============================================================ */
.quote {
    position: relative;
    margin: 44px auto;
    padding: 36px 24px;
    text-align: center;
    border-top: 1px solid var(--rule-strong);
    border-bottom: 1px solid var(--rule-strong);
}

.quote::before {
    content: '\201C';
    position: absolute;
    top: -22px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--display);
    font-size: 64px;
    line-height: 1;
    color: var(--gold);
    background: var(--bg-deeper);
    padding: 0 14px;
}

.quote p {
    font-family: var(--display) !important;
    font-style: italic !important;
    font-weight: 400 !important;
    font-size: 22px !important;
    line-height: 1.5 !important;
    color: var(--ink) !important;
    text-wrap: balance;
    max-width: 520px;
    margin: 0 auto 18px !important;
}

.quote footer {
    font-family: var(--serif);
    font-style: italic;
    font-size: 12.5px;
    letter-spacing: 0.22em;
    color: var(--gold);
    text-transform: uppercase;
}

.quote footer::before { content: '— '; }

/* ============================================================
   Mécanisme — ἄσκησις
   ============================================================ */
.mechanism {
    text-align: center;
    padding: 80px var(--pad-x-mobile) 56px;
    max-width: var(--measure);
    margin: 0 auto;
    position: relative;
}

.greek-word {
    font-family: var(--display);
    font-weight: 500;
    font-size: 72px;
    line-height: 1;
    color: var(--gold);
    letter-spacing: 0.015em;
    margin: 0 0 22px;
    text-shadow: 0 0 60px rgba(184, 147, 90, 0.15);
}

.greek-rule {
    display: block;
    width: 60px;
    height: 1px;
    background: var(--gold-deep);
    margin: 0 auto 22px;
    opacity: 0.7;
}

.mechanism-label {
    font-family: var(--display);
    font-style: italic;
    font-weight: 500;
    font-size: 20px;
    color: var(--ink);
    letter-spacing: 0.02em;
}

/* ============================================================
   Pattern interrupt — grands nombres
   ============================================================ */
.big-number {
    text-align: center;
    padding: 90px var(--pad-x-mobile);
    max-width: var(--measure);
    margin: 0 auto;
    position: relative;
}

.big-number-eyebrow {
    display: block;
    font-family: var(--serif);
    font-style: italic;
    font-size: 13.5px;
    letter-spacing: 0.18em;
    color: var(--ink-faint);
    text-transform: uppercase;
    margin-bottom: 20px;
}

.big-number .number {
    font-family: var(--display);
    font-weight: 700;
    font-size: 96px;
    line-height: 0.95;
    color: var(--ink);
    letter-spacing: -0.015em;
    margin: 0 0 12px;
}

.big-number-label {
    display: block;
    font-family: var(--display);
    font-style: italic;
    font-size: 17px;
    color: var(--gold);
    letter-spacing: 0.01em;
}

.big-number--alt .number {
    color: var(--gold);
}

/* ============================================================
   Ornement
   ============================================================ */
.ornament {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    margin: 36px auto;
    max-width: 280px;
    padding: 0 var(--pad-x-mobile);
}

.ornament-rule {
    flex: 1;
    height: 1px;
    background: var(--rule);
}

.ornament-mark {
    font-family: var(--display);
    color: var(--gold-deep);
    font-size: 20px;
    letter-spacing: 0.3em;
    user-select: none;
    opacity: 0.75;
}

/* ============================================================
   Phases — I · II · III
   ============================================================ */
.phases {
    max-width: var(--measure);
    margin: 28px auto 40px;
    padding: 0 var(--pad-x-mobile);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.phase {
    display: flex;
    align-items: stretch;
    gap: 20px;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 26px 4px;
    background:
        linear-gradient(to right, rgba(184, 147, 90, 0.03) 0%, transparent 60%);
    position: relative;
    transition: background 400ms ease;
}

.phase:hover {
    background:
        linear-gradient(to right, rgba(184, 147, 90, 0.06) 0%, transparent 60%);
}

.phase-numeral {
    flex: 0 0 auto;
    font-family: var(--display);
    font-weight: 500;
    font-style: italic;
    font-size: 48px;
    line-height: 1;
    color: var(--gold);
    min-width: 60px;
    text-align: center;
    padding-top: 4px;
    letter-spacing: 0.04em;
}

.phase-body {
    flex: 1;
    min-width: 0;
}

.phase-label {
    font-family: var(--serif);
    font-size: 11px !important;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold);
    margin: 0 0 8px !important;
    line-height: 1;
    font-weight: 500;
}

.phase-title {
    font-family: var(--display);
    font-weight: 600;
    font-size: 24px;
    line-height: 1.22;
    color: var(--ink);
    margin: 0 0 4px;
}

.phase-detail {
    font-family: var(--display);
    font-style: italic;
    font-size: 17px !important;
    color: var(--ink-soft) !important;
    margin: 0 !important;
}

/* ============================================================
   CTA — or plein, garantie signature, hover qui respire
   ============================================================ */
.cta-block {
    max-width: 500px;
    margin: 48px auto;
    padding: 0 var(--pad-x-mobile);
    text-align: center;
}

.cta {
    --cta-glow: 0 6px 28px -6px rgba(184, 147, 90, 0.28),
                0 0 0 0 rgba(184, 147, 90, 0),
                inset 0 1px 0 rgba(255, 255, 255, 0.10),
                inset 0 -1px 0 rgba(0, 0, 0, 0.18);

    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    width: 100%;
    padding: 26px 28px;
    background: var(--gold);
    color: var(--bg-deeper);
    border: 1px solid var(--gold);
    font-family: var(--display);
    font-style: italic;
    font-weight: 600;
    font-size: 21px;
    line-height: 1.1;
    letter-spacing: 0.012em;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border-radius: 3px;
    box-shadow: var(--cta-glow);
    transition:
        background 380ms var(--ease-out),
        box-shadow 380ms var(--ease-out),
        transform 260ms var(--ease-out),
        border-color 380ms var(--ease-out);
    will-change: transform, box-shadow;
}

.cta-label {
    font-style: italic;
    font-weight: 600;
}

/* Séparateur vertical délicat entre label et prix */
.cta-sep {
    display: inline-block;
    width: 1px;
    height: 22px;
    background: currentColor;
    opacity: 0.35;
    align-self: center;
}

.cta-price {
    font-style: normal;
    font-weight: 700;
    font-size: 20px;
    letter-spacing: 0.01em;
}

.cta:hover,
.cta:focus-visible {
    background: var(--gold-bright);
    border-color: var(--gold-bright);
    outline: none;
    transform: translateY(-1px);
    box-shadow:
        0 14px 44px -8px rgba(184, 147, 90, 0.45),
        0 0 0 5px rgba(184, 147, 90, 0.10),
        inset 0 1px 0 rgba(255, 255, 255, 0.14),
        inset 0 -1px 0 rgba(0, 0, 0, 0.18);
}

.cta:active {
    transform: translateY(0);
    box-shadow:
        0 4px 16px -4px rgba(184, 147, 90, 0.30),
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        inset 0 -1px 0 rgba(0, 0, 0, 0.22);
}

/* Ligne garantie : signature gold sous le bouton */
.cta-guarantee {
    margin-top: 18px;
    font-family: var(--display);
    font-style: italic;
    font-size: 15px;
    line-height: 1.4;
    color: var(--gold);
    letter-spacing: 0.02em;
    text-align: center;
    opacity: 0.95;
}

/* Micro : trust secondaire, plus discret */
.cta-micro {
    margin-top: 6px;
    font-family: var(--serif);
    font-size: 12px;
    font-style: italic;
    color: var(--ink-faint);
    letter-spacing: 0.05em;
}

/* ============================================================
   Garantie — sceau
   ============================================================ */
.guarantee {
    max-width: 380px;
    margin: 36px auto;
    padding: 44px 28px 36px;
    text-align: center;
    background: var(--bg-elevated);
    border: 1px solid var(--rule-strong);
    border-radius: 2px;
    position: relative;
    box-shadow: 0 0 80px -30px rgba(184, 147, 90, 0.18);
}

.guarantee-corner {
    position: absolute;
    width: 16px;
    height: 16px;
    border: 1px solid var(--gold);
}

.guarantee-corner--tl { top: -1px;    left: -1px;    border-right: none;  border-bottom: none; }
.guarantee-corner--tr { top: -1px;    right: -1px;   border-left: none;   border-bottom: none; }
.guarantee-corner--bl { bottom: -1px; left: -1px;   border-right: none;  border-top: none; }
.guarantee-corner--br { bottom: -1px; right: -1px;  border-left: none;   border-top: none; }

.guarantee-eyebrow {
    font-family: var(--serif);
    font-style: italic;
    font-size: 12px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 14px !important;
}

.guarantee-number {
    font-family: var(--display);
    font-weight: 700;
    font-size: 84px;
    color: var(--ink);
    line-height: 1;
    margin: 0 !important;
}

.guarantee-unit {
    font-family: var(--display);
    font-style: italic;
    font-size: 20px;
    color: var(--gold);
    margin: 4px 0 18px !important;
    letter-spacing: 0.05em;
}

.guarantee-text {
    font-family: var(--display);
    font-style: italic;
    font-size: 17px !important;
    line-height: 1.55 !important;
    color: var(--ink) !important;
    margin: 0 !important;
}

.guarantee-condition {
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 0.04em;
}

/* ============================================================
   Signature
   ============================================================ */
.signature {
    text-align: center;
    margin: 70px auto 30px;
    padding: 0 var(--pad-x-mobile);
}

.signature-rule {
    display: block;
    width: 40px;
    height: 1px;
    background: var(--gold-deep);
    margin: 0 auto 22px;
}

.signature-line {
    font-family: var(--display);
    font-style: italic;
    font-size: 18px;
    color: var(--gold);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.signature-meta {
    font-family: var(--serif);
    font-size: 11.5px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

/* ============================================================
   Bibliographie
   ============================================================ */
.biblio {
    max-width: var(--measure);
    margin: 30px auto 0;
    padding: 30px var(--pad-x-mobile) 0;
    border-top: 1px solid var(--rule);
}

.biblio-title {
    font-family: var(--serif);
    font-style: italic;
    font-size: 11.5px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 16px;
    text-align: center;
}

.biblio ul {
    list-style: none;
    padding: 0;
    max-width: 480px;
    margin: 0 auto;
}

.biblio li {
    font-family: var(--serif);
    font-size: 13px;
    line-height: 1.65;
    color: var(--ink-faint);
    margin-bottom: 6px;
}

.biblio em {
    font-style: italic;
    color: var(--ink-soft);
}

.biblio sup {
    font-size: 0.65em;
    vertical-align: super;
    line-height: 0;
}

/* ============================================================
   Checkout embedded — Stripe section + success inline
   ============================================================ */
.checkout-section {
    max-width: 560px;
    margin: 48px auto 40px;
    padding: 0 var(--pad-x-mobile);
    scroll-margin-top: 30px;
}

.checkout-eyebrow {
    font-family: var(--serif);
    font-style: italic;
    font-size: 12.5px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--gold);
    text-align: center;
    margin-bottom: 22px;
}

#checkout {
    min-height: 60px;
}

.checkout-loading {
    font-family: var(--display);
    font-style: italic;
    font-size: 15px;
    color: var(--ink-faint);
    text-align: center;
    margin: 24px 0;
    letter-spacing: 0.04em;
}

.checkout-error {
    font-family: var(--serif);
    font-size: 14px;
    line-height: 1.6;
    color: var(--ink);
    background: rgba(207, 70, 70, 0.08);
    border: 1px solid rgba(207, 70, 70, 0.4);
    border-radius: 3px;
    padding: 16px 18px;
    margin: 16px 0;
}

/* ── Success inline ────────────────────────────────────── */
.checkout-success {
    max-width: 460px;
    margin: 56px auto;
    padding: 56px var(--pad-x-mobile);
    text-align: center;
    background:
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(184, 147, 90, 0.06) 0%, transparent 70%);
    scroll-margin-top: 30px;
}

.success-ornament {
    font-family: var(--display);
    font-size: 28px;
    color: var(--gold-deep);
    line-height: 1;
    margin-bottom: 28px;
    opacity: 0.85;
}

.success-title {
    font-family: var(--display);
    font-weight: 600;
    font-style: italic;
    font-size: 36px;
    line-height: 1.2;
    color: var(--ink);
    margin: 0 0 14px;
    letter-spacing: 0.005em;
}

.success-sub {
    font-family: var(--display);
    font-style: italic;
    font-size: 19px;
    color: var(--gold);
    margin: 0 0 36px;
    letter-spacing: 0.02em;
}

.success-cta {
    display: inline-block;
    padding: 22px 32px;
    background: var(--gold);
    color: var(--bg-deeper);
    border: 1px solid var(--gold);
    font-family: var(--display);
    font-style: italic;
    font-weight: 600;
    font-size: 19px;
    line-height: 1.1;
    letter-spacing: 0.012em;
    text-decoration: none;
    border-radius: 3px;
    box-shadow:
        0 6px 28px -6px rgba(184, 147, 90, 0.32),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition:
        background 380ms var(--ease-out),
        transform 220ms var(--ease-out),
        box-shadow 380ms var(--ease-out);
}

.success-cta:hover,
.success-cta:focus-visible {
    background: var(--gold-bright);
    border-color: var(--gold-bright);
    outline: none;
    transform: translateY(-1px);
    box-shadow:
        0 14px 44px -8px rgba(184, 147, 90, 0.45),
        0 0 0 5px rgba(184, 147, 90, 0.10);
}

.success-fine {
    font-family: var(--serif);
    font-style: italic;
    font-size: 13px;
    color: var(--ink-faint);
    line-height: 1.6;
    margin: 28px auto 0;
    max-width: 360px;
    letter-spacing: 0.01em;
}

@media (min-width: 720px) {
    .checkout-section { max-width: 620px; margin: 60px auto 48px; padding: 0 var(--pad-x-desktop); }
    .checkout-eyebrow { font-size: 14px; }
    .success-title { font-size: 44px; }
    .success-sub { font-size: 21px; }
    .success-cta { font-size: 21px; padding: 26px 40px; }
    .success-fine { font-size: 14px; }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    [data-reveal] {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ============================================================
   Tablette / desktop
   ============================================================ */
@media (min-width: 720px) {
    html, body { font-size: 18px; }

    .topbar { font-size: 13.5px; margin-top: 40px; }

    .hero { padding: 64px var(--pad-x-desktop) 36px; }

    .frontispiece { max-width: 380px; }

    .hero-eyebrow {
        font-size: 30px;
        max-width: 620px;
        margin-top: 48px;
    }

    .hero-flourish {
        gap: 28px;
        max-width: 380px;
        margin: 56px auto 48px;
    }

    .flourish-rule { max-width: 100px; }
    .flourish-mark { font-size: 28px; }

    .inset-image {
        max-width: 640px;
        margin: 20px auto 40px;
        padding: 0 var(--pad-x-desktop);
    }

    .letter { padding: 36px var(--pad-x-desktop); }
    .letter p { font-size: 18px; line-height: 1.78; }

    .salutation { font-size: 28px; }

    .dropcap { font-size: 78px; padding: 6px 12px 0 0; }

    .pivot { font-size: 32px !important; margin: 40px 0 !important; }
    .section-heading { font-size: 34px; margin: 48px 0 28px; }
    .single-word { font-size: 40px !important; }
    .inner-thought { font-size: 23px; padding-left: 22px; }
    .contract { font-size: 23px !important; padding-left: 22px; }
    .aside { font-size: 16px !important; }
    .emphasis { font-size: 26px !important; }

    .citadelle { padding: 100px 0; }
    .citadelle-inner { padding: 0 var(--pad-x-desktop); }
    .citadelle-inner p { font-size: 18px; line-height: 1.78; }
    .citadelle-inner .pivot { font-size: 34px !important; }

    .quote { padding: 48px 32px; margin: 56px auto; }
    .quote p { font-size: 26px !important; line-height: 1.45 !important; }
    .quote::before { font-size: 80px; top: -28px; }

    .mechanism { padding: 110px var(--pad-x-desktop) 70px; }
    .greek-word { font-size: 110px; }
    .mechanism-label { font-size: 24px; }

    .big-number { padding: 130px var(--pad-x-desktop); }
    .big-number-eyebrow { font-size: 14.5px; margin-bottom: 28px; }
    .big-number .number { font-size: 168px; }
    .big-number-label { font-size: 20px; }

    .ornament { margin: 48px auto; max-width: 340px; }
    .ornament-mark { font-size: 24px; }

    .phases { padding: 0 var(--pad-x-desktop); gap: 22px; margin: 36px auto 56px; }
    .phase { padding: 32px 8px; gap: 32px; }
    .phase-numeral { font-size: 64px; min-width: 80px; }
    .phase-title { font-size: 28px; }
    .phase-detail { font-size: 19px !important; }

    .cta-block { margin: 60px auto; max-width: 540px; }
    .cta { font-size: 23px; padding: 30px 36px; gap: 22px; }
    .cta-price { font-size: 22px; }
    .cta-sep { height: 26px; }
    .cta-guarantee { margin-top: 22px; font-size: 16.5px; }
    .cta-micro { font-size: 13px; margin-top: 8px; }

    .guarantee { max-width: 440px; padding: 52px 36px 42px; margin: 48px auto; }
    .guarantee-number { font-size: 110px; }
    .guarantee-unit { font-size: 24px; }
    .guarantee-text { font-size: 19px !important; }

    .signature { margin: 90px auto 40px; }
    .signature-line { font-size: 20px; }

    .biblio { margin-top: 40px; padding: 40px var(--pad-x-desktop) 0; }
}

/* ============================================================
   Très grand desktop — confort de lecture
   ============================================================ */
@media (min-width: 1100px) {
    .big-number .number { font-size: 200px; }
    .greek-word { font-size: 128px; }
    .hero-eyebrow { font-size: 34px; max-width: 720px; }
    .frontispiece { max-width: 440px; }
}