/* ============================================================
   Cabinet de Conseil Stratégique
   Feuille de styles principale
   ============================================================ */


/* ============================================================
   1. VARIABLES & RESET
   ============================================================ */

:root {
   /* Couleurs */
   --c-black: #000000;
   --c-white: #FFFFFF;
   --c-blue-deep: #0D3B66;
   --c-blue-mid: #1A5496;
   --c-blue-sky: #3A9AD9;
   --c-blue-pale: #D6EAF8;
   --c-grey-100: #F5F5F5;
   --c-grey-200: #E8E8E8;
   --c-grey-400: #AAAAAA;
   --c-grey-600: #666666;
   --c-grey-800: #1A1A1A;

   /* Typographie */
   --font-display: 'Cormorant Garamond', serif;
   --font-body: 'DM Sans', sans-serif;

   /* Mise en page */
   --nav-h: 72px;
   --radius: 3px;
   --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
   scroll-behavior: smooth;
   font-size: 16px;
}

body {
   font-family: var(--font-body);
   background: var(--c-white);
   color: var(--c-black);
   line-height: 1.65;
   overflow-x: hidden;
}

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

a {
   color: inherit;
   text-decoration: none;
}

ul {
   list-style: none;
}

button {
   cursor: pointer;
   font-family: var(--font-body);
   border: none;
   background: none;
}


/* ============================================================
   2. UTILITAIRES GÉNÉRAUX
   ============================================================ */

.container {
   width: 100%;
   max-width: 1160px;
   margin-inline: auto;
   padding-inline: 32px;
}

.tag {
   display: inline-block;
   font-size: 11px;
   font-weight: 500;
   letter-spacing: 0.15em;
   text-transform: uppercase;
   color: var(--c-blue-sky);
   margin-bottom: 16px;
}

.section-title {
   font-family: var(--font-display);
   font-size: clamp(2rem, 4vw, 3.2rem);
   font-weight: 400;
   line-height: 1.15;
   color: var(--c-blue-deep);
   margin-bottom: 20px;
}

.section-lead {
   font-size: 1.05rem;
   color: var(--c-grey-600);
   max-width: 1000px;
   line-height: 1.75;
}

/* Animations reveal */
.reveal {
   opacity: 1 !important;
   visibility: visible !important;
   transform: translateY(28px);
   transition: opacity .7s ease, transform .7s ease;
}

.reveal.visible {
   opacity: 1;
   transform: translateY(0);
}

.reveal-delay-1 {
   transition-delay: .1s;
}

.reveal-delay-2 {
   transition-delay: .2s;
}

.reveal-delay-3 {
   transition-delay: .3s;
}

.reveal-delay-4 {
   transition-delay: .4s;
}


/* ============================================================
   3. BOUTONS
   ============================================================ */

.btn {
   display: inline-flex;
   align-items: center;
   gap: 10px;
   padding: 14px 28px;
   font-size: 0.85rem;
   font-weight: 500;
   letter-spacing: 0.08em;
   text-transform: uppercase;
   border-radius: var(--radius);
   transition: var(--transition);
}

.btn-primary {
   background: var(--c-blue-deep);
   color: var(--c-white);
}

.btn-primary:hover {
   background: var(--c-blue-mid);
   transform: translateY(-2px);
   box-shadow: 0 8px 24px rgba(13, 59, 102, .25);
}

.btn-outline {
   border: 1px solid var(--c-blue-deep);
   color: var(--c-blue-deep);
}

.btn-outline:hover {
   background: var(--c-blue-deep);
   color: var(--c-white);
   transform: translateY(-2px);
}

.btn-ghost {
   color: var(--c-blue-sky);
   padding: 0;
   font-size: 0.85rem;
   letter-spacing: 0.08em;
   text-transform: uppercase;
   position: relative;
}

.btn-ghost::after {
   content: '';
   position: absolute;
   bottom: -2px;
   left: 0;
   width: 0;
   height: 1px;
   background: var(--c-blue-sky);
   transition: width var(--transition);
}

.btn-ghost:hover::after {
   width: 100%;
}

.btn-white {
   background: var(--c-white);
   color: var(--c-blue-deep);
   font-weight: 500;
}

.btn-white:hover {
   background: var(--c-blue-pale);
   transform: translateY(-2px);
   box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
}

.arrow {
   display: inline-block;
   transition: transform var(--transition);
}

.btn:hover .arrow {
   transform: translateX(4px);
}


/* ============================================================
   4. NAVBAR
   ============================================================ */

#navbar {
   position: fixed;
   top: 0;
   left: 0;
   right: 0;
   z-index: 1000;
   height: var(--nav-h);
   display: flex;
   align-items: center;
   transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
   background: rgba(255, 255, 255, .96);
   backdrop-filter: blur(12px);
   box-shadow: 0 1px 0 var(--c-grey-200);
}

#navbar.dark-hero {
   background: transparent;
}

.nav-inner {
   display: flex;
   align-items: center;
   justify-content: space-between;
   width: 100%;
}

.nav-logo {
   font-family: var(--font-display);
   font-size: 1.5rem;
   font-weight: 600;
   letter-spacing: .12em;
   color: var(--c-blue-deep);
   transition: color var(--transition);
}

#navbar.dark-hero:not(.scrolled) .nav-logo {
   color: var(--c-white);
}

.nav-links {
   display: flex;
   gap: 36px;
   align-items: center;
}

.nav-link {
   font-size: .82rem;
   font-weight: 400;
   letter-spacing: .1em;
   text-transform: uppercase;
   color: var(--c-grey-800);
   position: relative;
   transition: color var(--transition);
}

#navbar.dark-hero:not(.scrolled) .nav-link {
   color: rgba(255, 255, 255, .85);
}

.nav-link::after {
   content: '';
   position: absolute;
   bottom: -4px;
   left: 0;
   width: 0;
   height: 1px;
   background: var(--c-blue-sky);
   transition: width var(--transition);
}

.nav-link:hover::after,
.nav-link.active-link::after {
   width: 100%;
}

.nav-link.active-link {
   color: var(--c-blue-deep);
}

#navbar.dark-hero:not(.scrolled) .nav-link.active-link {
   color: var(--c-white);
}

.nav-cta {
   padding: 10px 22px;
   font-size: .78rem;
   letter-spacing: .1em;
}

/* Burger */
.burger {
   display: none;
   flex-direction: column;
   gap: 5px;
   padding: 8px;
   cursor: pointer;
}

.burger span {
   display: block;
   width: 24px;
   height: 2px;
   background: var(--c-grey-800);
   transition: var(--transition);
}

#navbar.dark-hero:not(.scrolled) .burger span {
   background: var(--c-white);
}

.burger.open span:nth-child(1) {
   transform: translateY(7px) rotate(45deg);
}

.burger.open span:nth-child(2) {
   opacity: 0;
}

.burger.open span:nth-child(3) {
   transform: translateY(-7px) rotate(-45deg);
}

/* Menu mobile */
.mobile-menu {
   position: fixed;
   top: var(--nav-h);
   left: 0;
   right: 0;
   background: var(--c-white);
   border-top: 1px solid var(--c-grey-200);
   padding: 24px 32px 32px;
   z-index: 999;
   display: flex;
   flex-direction: column;
   gap: 20px;
   transform: translateY(-120%);
   transition: transform var(--transition);
   box-shadow: 0 12px 32px rgba(0, 0, 0, .08);
}

.mobile-menu.open {
   transform: translateY(0);
}

.mobile-menu .nav-link {
   font-size: 1rem;
   padding: 8px 0;
   border-bottom: 1px solid var(--c-grey-200);
}

.mobile-menu .nav-link::after {
   display: none;
}


/* ============================================================
   5. HERO (page d'accueil)
   ============================================================ */

.hero {
   min-height: 100vh;
   background: var(--c-blue-deep);
   position: relative;
   display: flex;
   align-items: center;
   overflow: hidden;
}

.hero::before {
   content: '';
   position: absolute;
   inset: 0;
   background:
      radial-gradient(ellipse 60% 70% at 80% 50%, rgba(58, 154, 217, .18) 0%, transparent 70%),
      radial-gradient(ellipse 40% 50% at 10% 80%, rgba(13, 59, 102, .5) 0%, transparent 60%);
}

.hero-grid-overlay {
   position: absolute;
   inset: 0;
   background-image:
      linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
   background-size: 80px 80px;
}

/* Layout flex hero */
.hero-layout {
   display: flex;
   align-items: center;
   justify-content: space-between;
   gap: 60px;
}

.hero-content {
   position: relative;
   z-index: 1;
   padding-block: 100px;
   max-width: 760px;
}

.hero-eyebrow {
   font-size: 11px;
   font-weight: 500;
   letter-spacing: .2em;
   text-transform: uppercase;
   color: var(--c-blue-sky);
   margin-bottom: 24px;
   display: flex;
   align-items: center;
   gap: 12px;
}

.hero-eyebrow::before {
   content: '';
   display: inline-block;
   width: 32px;
   height: 1px;
   background: var(--c-blue-sky);
}

.hero-title {
   font-family: var(--font-display);
   font-size: clamp(2.8rem, 6vw, 5.2rem);
   font-weight: 300;
   line-height: 1.08;
   color: var(--c-white);
   margin-bottom: 28px;
}

.hero-title em {
   font-style: italic;
   color: var(--c-blue-sky);
}

.hero-sub {
   font-size: 1rem;
   color: rgba(255, 255, 255, .65);
   max-width: 900px;
   line-height: 1.8;
   margin-bottom: 44px;
}

.hero-actions {
   display: flex;
   gap: 16px;
   flex-wrap: wrap;
   margin-bottom: 100px;
}

/* Photo ronde */
.hero-photo {
   width: 300px;
   height: 300px;
   border-radius: 50%;
   overflow: hidden;
   flex-shrink: 0;
   border: 3px solid rgba(255, 255, 255, 0.2);
}

.hero-photo img {
   width: 100%;
   height: 100%;
   object-fit: cover;
}

/* Stats hero */
.hero-stats {
   position: absolute;
   bottom: 48px;
   right: 0;
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 1px;
   background: rgba(255, 255, 255, .08);
}

.hero-stat {
   background: rgba(13, 59, 102, .6);
   backdrop-filter: blur(8px);
   padding: 24px 32px;
   text-align: center;
}

.hero-stat-num {
   font-family: var(--font-display);
   font-size: 2.4rem;
   font-weight: 300;
   color: var(--c-white);
   line-height: 1;
}

.hero-stat-label {
   font-size: .72rem;
   letter-spacing: .12em;
   text-transform: uppercase;
   color: rgba(255, 255, 255, .5);
   margin-top: 6px;
}


/* ============================================================
   6. SERVICES PREVIEW
   ============================================================ */

.services-preview {
   padding: 100px 0;
   background: var(--c-grey-100);
}

.services-header {
   display: flex;
   justify-content: space-between;
   align-items: flex-end;
   margin-bottom: 64px;
   gap: 32px;
   flex-wrap: wrap;
}

.services-grid {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 2px;
   background: var(--c-grey-000);
   align-content: start;
}

.service-card {
   background: var(--c-white);
   padding: 48px 40px;
   transition: var(--transition);
   position: relative;
   overflow: hidden;
}

.service-card::after {
   content: '';
   position: absolute;
   bottom: 0;
   left: 0;
   width: 0;
   height: 2px;
   background: linear-gradient(90deg, var(--c-blue-sky), var(--c-blue-deep));
   transition: width var(--transition);
}

.service-card:hover {
   background: var(--c-grey-100);
}

.service-card:hover::after {
   width: 100%;
}

.service-icon {
   width: 48px;
   height: 48px;
   margin-bottom: 28px;
   color: var(--c-blue-sky);
}

.service-name {
   font-family: var(--font-display);
   font-size: 1.5rem;
   font-weight: 500;
   color: var(--c-blue-deep);
   margin-bottom: 12px;
   line-height: 1.2;
}

.service-desc {
   font-size: .9rem;
   color: var(--c-grey-600);
   margin-top: 15px;
   line-height: 1.7;
}


/* ============================================================
   7. TÉMOIGNAGES
   ============================================================ */

.testimonials {
   padding: 100px 0;
   background: var(--c-grey-100);
}

.testimonials-header {
   text-align: center;
   margin-bottom: 64px;
}

.testimonials-header .section-lead {
   margin-inline: auto;
}

.testi-grid {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 24px;
}

.testi-card {
   background: var(--c-white);
   padding: 36px;
   border-radius: var(--radius);
   border-top: 3px solid var(--c-blue-sky);
   transition: var(--transition);
}

.testi-card:hover {
   box-shadow: 0 16px 48px rgba(13, 59, 102, .1);
   transform: translateY(-4px);
}

.testi-quote {
   font-family: var(--font-display);
   font-size: 3rem;
   color: var(--c-blue-pale);
   line-height: 1;
   margin-bottom: 16px;
}

.testi-text {
   font-size: .92rem;
   color: var(--c-grey-600);
   line-height: 1.75;
   margin-bottom: 24px;
   font-style: italic;
}

.testi-author {
   display: flex;
   align-items: center;
   gap: 14px;
}

.testi-avatar {
   width: 42px;
   height: 42px;
   border-radius: 50%;
   background: linear-gradient(135deg, var(--c-blue-deep), var(--c-blue-sky));
   display: flex;
   align-items: center;
   justify-content: center;
   font-family: var(--font-display);
   font-size: 1.1rem;
   color: var(--c-white);
   font-weight: 500;
   flex-shrink: 0;
}

.testi-name {
   font-weight: 500;
   font-size: .88rem;
   color: var(--c-blue-deep);
}

.testi-role {
   font-size: .78rem;
   color: var(--c-grey-400);
}


/* ============================================================
   8. CTA BANNER
   ============================================================ */

.cta-banner {
   padding: 80px 0;
   background: var(--c-blue-deep);
   position: relative;
   overflow: hidden;
}

.cta-banner::before {
   content: '';
   position: absolute;
   inset: 0;
   background: radial-gradient(ellipse 50% 100% at 90% 50%, rgba(58, 154, 217, .2), transparent);
}

.cta-inner {
   position: relative;
   display: flex;
   align-items: center;
   justify-content: space-between;
   gap: 32px;
   flex-wrap: wrap;
}

.cta-text .section-title {
   color: var(--c-white);
   margin-bottom: 8px;
}

.cta-text p {
   color: rgba(255, 255, 255, .6);
   font-size: 1rem;
}


/* ============================================================
   9. PAGE HERO (pages internes)
   ============================================================ */

.page-hero {
   padding: 160px 0 80px;
   background: var(--c-blue-deep);
   position: relative;
   overflow: hidden;
}

.page-hero::before {
   content: '';
   position: absolute;
   inset: 0;
   background: radial-gradient(ellipse 60% 80% at 80% 60%, rgba(58, 154, 217, .15), transparent);
}

.page-hero-content {
   position: relative;
}

.page-hero .section-title {
   color: var(--c-white);
   font-size: clamp(2.4rem, 4vw, 3.8rem);
}

.page-hero .section-lead {
   color: rgba(255, 255, 255, .6);
}


/* ============================================================
   10. EXPERTISE
   ============================================================ */

.expertise-block {
   padding: 100px 0;
}

.expertise-block:nth-child(even) {
   background: var(--c-grey-100);
}

.expertise-item {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 80px;
   align-items: center;
}

.expertise-item.reverse {
   direction: rtl;
}

.expertise-item.reverse>* {
   direction: ltr;
}

.expertise-visual {
   background: linear-gradient(135deg, var(--c-blue-deep) 0%, var(--c-blue-mid) 100%);
   border-radius: 4px;
   aspect-ratio: 4/3;
   position: relative;
   overflow: hidden;
   display: flex;
   align-items: center;
   justify-content: center;
   color: #ffffff;
}

.expertise-visual::before {
   content: '';
   position: absolute;
   inset: 0;
   background-image:
      linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
   background-size: 40px 40px;
}

.expertise-visual-icon {
   position: relative;
   z-index: 1;
   color: rgba(255, 255, 255, .50);
}

.expertise-visual-num {
   position: absolute;
   bottom: 24px;
   right: 28px;
   font-family: var(--font-display);
   font-size: 5rem;
   color: rgba(255, 255, 255, .50);
   font-weight: 300;
   line-height: 1;
}

.expertise-text .tag {
   margin-bottom: 12px;
}

.expertise-text .section-title {
   margin-bottom: 16px;
}

.expertise-text p {
   color: var(--c-grey-600);
   margin-bottom: 24px;
   line-height: 1.8;
}

.feature-list {
   display: flex;
   flex-direction: column;
   gap: 12px;
   margin-bottom: 32px;
}

.feature-item {
   display: block;
   gap: 12px;
   align-items: flex-start;
   font-size: .9rem;
   color: var(--c-grey-600);
}

.feature-item::before {
   content: '';
   display: inline-block;
   width: 16px;
   height: 16px;
   border-radius: 50%;
   background: var(--c-blue-pale);
   border: 2px solid var(--c-blue-sky);
   flex-shrink: 0;
   margin-top: 3px;
}

/* Tags expertise */
.expertise-section {
   padding: 5rem 0;
}

.expertise-header {
   max-width: 560px;
   margin-bottom: 3rem;
}

.expertise-tags {
   display: flex;
   flex-wrap: wrap;
   gap: 0.75rem;
}

.expertise-tag {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.82rem;
   font-weight: 400;
   padding: 0.6rem 1.1rem;
   border: 1px solid rgba(0, 0, 0, 0.1);
   border-radius: 100px;
   opacity: 0.72;
   transition: opacity 0.2s, border-color 0.2s;
   cursor: default;
}

.expertise-tag:hover {
   opacity: 1;
   border-color: rgba(0, 0, 0, 0.25);
}

.expertise-tag.primary {
   font-weight: 500;
   opacity: 1;
   border-color: rgba(0, 0, 0, 0.2);
}


/* ============================================================
   11. MÉTHODOLOGIE
   ============================================================ */

.methodo {
   padding: 100px 0;
   background: var(--c-blue-deep);
}

.methodo .tag {
   color: var(--c-blue-sky);
}

.methodo .section-title {
   color: var(--c-white);
}

.methodo-steps {
   display: grid;
   grid-template-columns: repeat(4, 1fr);
   gap: 1px;
   background: rgba(255, 255, 255, .06);
   margin-top: 64px;
}

.methodo-step {
   background: var(--c-grey-800);
   padding: 40px 32px;
   transition: var(--transition);
}

.methodo-step:hover {
   background: var(--c-blue-deep);
}

.step-num {
   font-family: var(--font-display);
   font-size: 4rem;
   font-weight: 300;
   color: var(--c-white);
   line-height: 1;
   margin-bottom: 16px;
}

.step-title {
   font-family: var(--font-display);
   font-size: 1.25rem;
   color: var(--c-white);
   margin-bottom: 12px;
}

.step-desc {
   font-size: .85rem;
   color: rgba(255, 255, 255, .5);
   line-height: 1.7;
}

/* Grille phases (variante) */
.methode-section {
   padding: 6rem 0;
}

.phases-grid {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 2rem;
   margin-top: 3rem;
}

.phase-card {
   border: 1px solid rgba(255, 255, 255, 0.1);
   padding: 2.5rem 2rem;
   position: relative;
}

.phase-num {
   font-family: 'Cormorant Garamond', serif;
   font-size: 3.5rem;
   font-weight: 300;
   opacity: 0.85;
   line-height: 1;
   margin-bottom: 1rem;
   color: var(--c-blue-deep);
}

.phase-title {
   font-family: 'Cormorant Garamond', serif;
   font-size: 1.4rem;
   font-weight: 500;
   margin-bottom: 0.75rem;
}

.phase-desc {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.9rem;
   line-height: 1.7;
   opacity: 0.7;
}

/* Méthode (layout 2 colonnes) */
.method-section {
   padding: 6rem 0;
}

.method-grid {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 5rem;
   align-items: start;
}

.method-sticky {
   position: sticky;
   top: 6rem;
}

.method-body p {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.92rem;
   line-height: 1.85;
   opacity: 0.68;
   margin-bottom: 1.25rem;
}

.method-body strong {
   font-weight: 500;
   opacity: 1;
}

.method-pillars {
   margin-top: 2rem;
   display: flex;
   flex-direction: column;
   gap: 1rem;
}

.method-pillar {
   display: flex;
   align-items: flex-start;
   gap: 1rem;
   padding: 1rem 0;
   border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.method-pillar:last-child {
   border-bottom: none;
}

.method-pillar-num {
   font-family: 'Cormorant Garamond', serif;
   font-size: 1.5rem;
   font-weight: 300;
   line-height: 1;
   opacity: 0.22;
   min-width: 24px;
   margin-top: 0.1rem;
}

.method-pillar-text {
   flex: 1;
}

.method-pillar-title {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.88rem;
   font-weight: 500;
   margin-bottom: 0.2rem;
}

.method-pillar-desc {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.8rem;
   line-height: 1.6;
   opacity: 0.52;
}


/* ============================================================
   12. RÉALISATIONS (CASES)
   ============================================================ */

.cases-grid-section {
   padding: 100px 0;
}

.cases-grid {
   display: grid;
   grid-template-columns: repeat(2, 1fr);
   gap: 32px;
}

.case-card {
   background: var(--c-white);
   border: 1px solid var(--c-grey-200);
   border-radius: 4px;
   overflow: hidden;
   transition: var(--transition);
   cursor: pointer;
}

.case-card:hover {
   box-shadow: 0 20px 60px rgba(13, 59, 102, .12);
   transform: translateY(-6px);
}

.case-visual {
   height: 220px;
   position: relative;
   overflow: hidden;
}

.case-visual-bg {
   position: absolute;
   inset: 0;
   transition: transform .5s ease;
}

.case-card:hover .case-visual-bg {
   transform: scale(1.05);
}

/* Fonds des visuels */
.cv-1 {
   background: linear-gradient(135deg, #0D3B66 0%, #1A5496 60%, #3A9AD9 100%);
}

.cv-2 {
   background: linear-gradient(135deg, #1A1A1A 0%, #0D3B66 100%);
}

.cv-3 {
   background: linear-gradient(135deg, #0D3B66 0%, #3A9AD9 100%);
}

.cv-4 {
   background: linear-gradient(135deg, #3A9AD9 0%, #0D3B66 100%);
}

.case-visual-pattern {
   position: absolute;
   inset: 0;
   background-image:
      linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
   background-size: 32px 32px;
}

.case-visual-label {
   position: absolute;
   top: 20px;
   left: 20px;
   font-size: 18px;
   font-weight: 500;
   letter-spacing: .15em;
   text-transform: uppercase;
   background: rgba(255, 255, 255, .15);
   backdrop-filter: blur(8px);
   color: var(--c-white);
   padding: 6px 12px;
   border-radius: 2px;
}

.case-body {
   padding: 36px;
}

.case-sector {
   font-size: 10px;
   letter-spacing: .15em;
   text-transform: uppercase;
   color: var(--c-blue-sky);
   font-weight: 500;
   margin-bottom: 10px;
}

.case-title {
   font-family: var(--font-display);
   font-size: 1.5rem;
   font-weight: 500;
   color: var(--c-blue-deep);
   margin-bottom: 12px;
   line-height: 1.2;
}

.case-desc {
   font-size: .88rem;
   color: var(--c-grey-600);
   line-height: 1.7;
   margin-bottom: 24px;
}

.case-results {
   display: flex;
   gap: 24px;
   padding-top: 20px;
   border-top: 1px solid var(--c-grey-200);
}

.case-result-item {
   flex: 1;
}

.case-result-num {
   font-family: var(--font-display);
   font-size: 1.8rem;
   font-weight: 400;
   color: var(--c-blue-deep);
   line-height: 1;
}

.case-result-label {
   font-size: .72rem;
   color: var(--c-grey-400);
   letter-spacing: .08em;
   text-transform: uppercase;
   margin-top: 4px;
}


/* ============================================================
   13. À PROPOS
   ============================================================ */

.about-intro {
   padding: 100px 0;
}

.about-intro-grid {
   display: grid;
   grid-template-columns: 1fr;
   gap: 80px;
   align-items: center;
}

.about-portrait {
   position: relative;
}

.portrait-frame {
   aspect-ratio: 3/4;
   background: linear-gradient(135deg, var(--c-blue-deep), var(--c-blue-mid));
   border-radius: 4px;
   position: relative;
   overflow: hidden;
   max-width: 400px;
}

.portrait-frame::before {
   content: '';
   position: absolute;
   inset: 0;
   background: radial-gradient(circle at 60% 40%, rgba(58, 154, 217, .3), transparent 60%);
}

.portrait-initials {
   position: absolute;
   inset: 0;
   display: flex;
   align-items: center;
   justify-content: center;
   font-family: var(--font-display);
   font-size: 6rem;
   font-weight: 300;
   color: rgba(255, 255, 255, .15);
}

.portrait-deco {
   position: absolute;
   top: -20px;
   right: -20px;
   width: 120px;
   height: 120px;
   border: 2px solid var(--c-blue-pale);
   border-radius: 50%;
   opacity: .3;
}

.experience-badge {
   position: absolute;
   bottom: 28px;
   right: -20px;
   background: var(--c-white);
   padding: 16px 20px;
   box-shadow: 0 12px 32px rgba(0, 0, 0, .12);
   border-radius: 4px;
   display: flex;
   flex-direction: column;
   z-index: 2;
}

.experience-badge strong {
   display: block;
   font-family: var(--font-display);
   font-size: 2rem;
   color: var(--c-blue-deep);
   line-height: 1;
}

.experience-badge span {
   font-size: .75rem;
   color: var(--c-grey-400);
   letter-spacing: .08em;
   text-transform: uppercase;
}

.about-text .section-title {
   margin-bottom: 20px;
}

.about-text p {
   color: var(--c-grey-600);
   margin-bottom: 20px;
   line-height: 1.8;
   font-size: .95rem;
}

/* Valeurs */
.values-section {
   padding: 80px 0 100px;
   background: var(--c-grey-100);
}

.values-header {
   text-align: center;
   margin-bottom: 56px;
}

.values-header .section-lead {
   margin-inline: auto;
}

.values-grid {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 24px;
}

.value-card {
   background: var(--c-white);
   padding: 40px 32px;
   border-radius: var(--radius);
   border-bottom: 3px solid transparent;
   transition: var(--transition);
}

.value-card:hover {
   border-bottom-color: var(--c-blue-sky);
   box-shadow: 0 12px 40px rgba(13, 59, 102, .08);
   transform: translateY(-4px);
}

.value-icon {
   font-size: 2rem;
   margin-bottom: 20px;
}

.value-title {
   font-family: var(--font-display);
   font-size: 1.3rem;
   color: var(--c-blue-deep);
   margin-bottom: 12px;
}

.value-text {
   font-size: .88rem;
   color: var(--c-grey-600);
   line-height: 1.7;
}

/* Clients */
.clients-section {
   padding: 60px 0;
   border-top: 1px solid var(--c-grey-200);
}

.clients-label {
   text-align: center;
   font-size: .75rem;
   letter-spacing: .2em;
   text-transform: uppercase;
   color: var(--c-grey-400);
   margin-bottom: 36px;
}

.clients-logos {
   display: flex;
   align-items: center;
   justify-content: center;
   gap: 48px;
   flex-wrap: wrap;
}

.client-logo {
   font-family: var(--font-display);
   font-size: 1.2rem;
   letter-spacing: .12em;
   color: var(--c-grey-400);
   font-weight: 500;
   transition: color var(--transition);
}

.client-logo:hover {
   color: var(--c-blue-deep);
}


/* ============================================================
   14. FAQ
   ============================================================ */

.faq-section {
   padding: 5rem 0 6rem;
}

.faq-header {
   max-width: 520px;
   margin-bottom: 3rem;
}

.faq-list {
   max-width: 720px;
   border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.faq-item {
   border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.faq-question {
   width: 100%;
   background: none;
   border: none;
   cursor: pointer;
   text-align: left;
   padding: 1.5rem 0;
   display: flex;
   align-items: center;
   justify-content: space-between;
   gap: 1rem;
   font-family: 'DM Sans', sans-serif;
   font-size: 1rem;
   font-weight: 400;
   color: inherit;
   transition: opacity 0.2s;
}

.faq-question:hover {
   opacity: 0.7;
}

/* Variante <details> */
.faq-question::-webkit-details-marker {
   display: none;
}

.faq-question h3 {
   font-family: 'Cormorant Garamond', serif;
   font-size: 1.2rem;
   font-weight: 400;
   margin: 0;
}

.faq-icon {
   font-size: 1.5rem;
   font-weight: 300;
   opacity: 0.5;
   flex-shrink: 0;
   transition: transform 0.3s ease;
}

details[open] .faq-icon {
   transform: rotate(45deg);
}

/* Chevron SVG */
.faq-chevron {
   flex-shrink: 0;
   width: 20px;
   height: 20px;
   opacity: 0.35;
   transition: transform 0.3s ease, opacity 0.2s;
}

.faq-item.open .faq-chevron {
   transform: rotate(180deg);
   opacity: 0.6;
}

.faq-answer {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.9rem;
   line-height: 1.8;
   opacity: 0.62;
   max-height: 0;
   overflow: hidden;
   transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
   max-height: 300px;
   padding-bottom: 1.5rem;
}

/* Variante <details> : réponse inline */
.faq-answer-inner {
   padding: 0 1.5rem 1.25rem;
   font-size: 0.95rem;
   line-height: 1.75;
   color: #444;
   border-top: 1px solid #EAF2FB;
   padding-top: 1rem;
}


/* ============================================================
   15. FAST ANSWER
   ============================================================ */

.fast-answer {
   background: var(--color-surface, #f8f7f4);
   border-left: 3px solid currentColor;
   border-radius: 0 8px 8px 0;
   padding: 1.5rem 2rem;
   margin: 2rem 0 0;
}

.fast-answer p {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.95rem;
   line-height: 1.75;
   color: inherit;
   opacity: 0.82;
}

.fast-answer strong {
   font-weight: 500;
   opacity: 1;
}


/* ============================================================
   16. PILIERS
   ============================================================ */

.pillars-section {
   padding: 6rem 0;
}

.pillars-intro {
   max-width: 640px;
   margin: 0 auto 4rem;
   text-align: center;
}

.pillars-intro .section-tag {
   display: inline-block;
   font-family: 'DM Sans', sans-serif;
   font-size: 0.7rem;
   font-weight: 500;
   letter-spacing: 0.12em;
   text-transform: uppercase;
   opacity: 0.45;
   margin-bottom: 1rem;
}

.pillars-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
   gap: 1.5rem;
}

.pillar-card {
   border: 1px solid rgba(0, 0, 0, 0.07);
   border-radius: 12px;
   padding: 2rem;
   position: relative;
   overflow: hidden;
   transition: border-color 0.3s ease, transform 0.3s ease;
}

.pillar-card:hover {
   border-color: rgba(0, 0, 0, 0.15);
   transform: translateY(-2px);
}

.pillar-num {
   font-family: 'Cormorant Garamond', serif;
   font-size: 3.5rem;
   font-weight: 300;
   line-height: 1;
   opacity: 0.08;
   position: absolute;
   top: 1rem;
   right: 1.5rem;
}

.pillar-icon {
   width: 36px;
   height: 36px;
   margin-bottom: 1.25rem;
   opacity: 0.55;
}

.pillar-title {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.9rem;
   font-weight: 500;
   letter-spacing: 0.01em;
   margin-bottom: 0.6rem;
}

.pillar-ref {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.7rem;
   font-weight: 400;
   letter-spacing: 0.06em;
   text-transform: uppercase;
   opacity: 0.38;
   margin-bottom: 0.75rem;
   display: block;
}

.pillar-desc {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.85rem;
   line-height: 1.7;
   opacity: 0.62;
}

.pillar-scientific {
   font-size: 0.78rem;
   font-style: italic;
   color: #185FA5;
   margin-bottom: 0.75rem;
   background: #EBF4FB;
   display: inline-block;
   padding: 2px 10px;
   border-radius: 99px;
}

.scientific-note {
   font-size: 0.8rem;
   color: #888;
   font-style: italic;
   margin-top: 0.5rem;
   border-top: 1px solid #EAF2FB;
   padding-top: 0.5rem;
}


/* ============================================================
   17. CHIFFRES / PROOF
   ============================================================ */

.proof-section {
   padding: 1rem 0;
}

.proof-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
   gap: 1px;
   border: 1px solid rgba(0, 0, 0, 0.07);
   border-radius: 16px;
   overflow: hidden;
}

.proof-item {
   padding: 2.5rem 2rem;
   border-right: 1px solid rgba(0, 0, 0, 0.07);
}

.proof-item:last-child {
   border-right: none;
}

.proof-num {
   font-family: 'Cormorant Garamond', serif;
   font-size: 3rem;
   font-weight: 300;
   line-height: 1;
   margin-bottom: 0.5rem;
}

.proof-label {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.78rem;
   font-weight: 400;
   line-height: 1.5;
   opacity: 0.5;
}


/* ============================================================
   18. TIMELINE
   ============================================================ */

.timeline-section {
   padding: 6rem 0;
}

.timeline-header {
   max-width: 560px;
   margin-bottom: 4rem;
}

.timeline {
   position: relative;
   max-width: 680px;
}

.timeline::before {
   content: '';
   position: absolute;
   left: 0;
   top: 8px;
   bottom: 0;
   width: 1px;
   background: rgba(0, 0, 0, 0.1);
}

.timeline-item {
   padding-left: 2.5rem;
   padding-bottom: 3rem;
   position: relative;
}

.timeline-item:last-child {
   padding-bottom: 0;
}

.timeline-dot {
   position: absolute;
   left: -4px;
   top: 8px;
   width: 9px;
   height: 9px;
   border-radius: 50%;
   background: currentColor;
   opacity: 0.25;
   transition: opacity 0.3s;
}

.timeline-item:hover .timeline-dot {
   opacity: 0.7;
}

.timeline-period {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.72rem;
   font-weight: 500;
   letter-spacing: 0.1em;
   text-transform: uppercase;
   opacity: 0.38;
   margin-bottom: 0.4rem;
}

.timeline-title {
   font-family: 'DM Sans', sans-serif;
   font-size: 1rem;
   font-weight: 500;
   line-height: 1.4;
   margin-bottom: 0.5rem;
}

.timeline-sub {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.8rem;
   font-weight: 400;
   opacity: 0.45;
   margin-bottom: 0.6rem;
   font-style: italic;
}

.timeline-desc {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.875rem;
   line-height: 1.75;
   opacity: 0.62;
   max-width: 520px;
}

/* Timeline double colonne */
.timeline-dual-container {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 4rem;
   margin-top: 3rem;
   position: relative;
}

.column-title {
   font-size: 1.2rem;
   text-transform: uppercase;
   letter-spacing: 1px;
   margin-bottom: 2rem;
   color: var(--primary-color);
   text-align: center;
   font-weight: bold;
}

.timeline-track {
   position: relative;
   border-left: 2px solid #e0e0e0;
   padding-left: 2rem;
}


/* ============================================================
   19. FOR WHOM
   ============================================================ */

.forwhom-section {
   padding: 5rem 0;
}

.forwhom-grid {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 4rem;
   align-items: center;
}

.forwhom-list {
   list-style: none;
   padding: 0;
   margin: 2rem 0 0;
}

.forwhom-list li {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.9rem;
   line-height: 1.7;
   opacity: 0.7;
   padding: 0.75rem 0;
   border-bottom: 1px solid rgba(0, 0, 0, 0.06);
   display: flex;
   align-items: flex-start;
   gap: 0.75rem;
}

.forwhom-list li::before {
   content: '—';
   flex-shrink: 0;
   opacity: 0.35;
   margin-top: 0.05rem;
}

.forwhom-stats {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 1.5rem;
}

.stat-block {
   padding: 1.75rem;
   border: 1px solid rgba(0, 0, 0, 0.07);
   border-radius: 12px;
}

.stat-num {
   font-family: 'Cormorant Garamond', serif;
   font-size: 2.8rem;
   font-weight: 300;
   line-height: 1;
   margin-bottom: 0.4rem;
}

.stat-label {
   font-family: 'DM Sans', sans-serif;
   font-size: 0.75rem;
   font-weight: 400;
   line-height: 1.5;
   opacity: 0.5;
}


/* ============================================================
   20. CONTACT
   ============================================================ */

.contact-section {
   padding: 100px 0;
}

.contact-grid {
   display: grid;
   grid-template-columns: 1fr 1.4fr;
   gap: 80px;
   align-items: start;
}

.contact-info .section-title {
   margin-bottom: 20px;
}

.contact-info>p {
   color: var(--c-grey-600);
   margin-bottom: 40px;
   line-height: 1.8;
}

.contact-item {
   display: flex;
   gap: 16px;
   align-items: flex-start;
   margin-bottom: 28px;
}

.contact-item-icon {
   width: 40px;
   height: 40px;
   background: var(--c-blue-pale);
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   flex-shrink: 0;
   color: var(--c-blue-deep);
}

.contact-item-label {
   font-size: .75rem;
   letter-spacing: .1em;
   text-transform: uppercase;
   color: var(--c-grey-400);
   margin-bottom: 4px;
}

.contact-item-val {
   font-size: .95rem;
   color: var(--c-blue-deep);
   font-weight: 500;
}

.rdv-card {
   margin-top: 40px;
   padding: 28px;
   background: linear-gradient(135deg, var(--c-blue-deep), var(--c-blue-mid));
   border-radius: 4px;
   color: var(--c-white);
}

.rdv-card h4 {
   font-family: var(--font-display);
   font-size: 1.3rem;
   margin-bottom: 8px;
   font-weight: 400;
}

.rdv-card p {
   font-size: .85rem;
   color: rgba(255, 255, 255, .65);
   margin-bottom: 20px;
}

.contact-form {
   background: var(--c-white);
   border: 1px solid var(--c-grey-200);
   border-radius: 4px;
   padding: 48px;
}

.form-title {
   font-family: var(--font-display);
   font-size: 1.6rem;
   color: var(--c-blue-deep);
   margin-bottom: 32px;
}

.form-row {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 20px;
}

.form-group {
   margin-bottom: 20px;
}

.form-group label {
   display: block;
   font-size: .75rem;
   letter-spacing: .1em;
   text-transform: uppercase;
   color: var(--c-grey-600);
   margin-bottom: 8px;
   font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
   width: 100%;
   padding: 12px 16px;
   border: 1px solid var(--c-grey-200);
   border-radius: var(--radius);
   font-family: var(--font-body);
   font-size: .9rem;
   color: var(--c-black);
   background: var(--c-white);
   transition: border-color var(--transition), box-shadow var(--transition);
   outline: none;
   -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
   border-color: var(--c-blue-sky);
   box-shadow: 0 0 0 3px rgba(58, 154, 217, .12);
}

.form-group textarea {
   resize: vertical;
   min-height: 120px;
}

.form-note {
   font-size: .78rem;
   color: var(--c-grey-400);
   margin-top: 16px;
}

.form-success {
   display: none;
   text-align: center;
   padding: 40px 20px;
}

.form-success.show {
   display: block;
}

.form-success-icon {
   font-size: 3rem;
   margin-bottom: 16px;
}

.form-success h3 {
   font-family: var(--font-display);
   font-size: 1.5rem;
   color: var(--c-blue-deep);
   margin-bottom: 8px;
}

.form-success p {
   color: var(--c-grey-600);
}


/* ============================================================
   21. FOOTER
   ============================================================ */

footer {
   background: var(--c-grey-800);
   color: rgba(255, 255, 255, .6);
}

.footer-main {
   display: grid;
   grid-template-columns: 2fr 1fr 1fr 1fr;
   gap: 48px;
   padding: 72px 0 56px;
}

.footer-brand .nav-logo {
   color: var(--c-white);
   font-size: 1.3rem;
   margin-bottom: 16px;
   display: block;
}

.footer-brand p {
   font-size: .85rem;
   line-height: 1.75;
   max-width: 260px;
}

.footer-col h5 {
   font-size: .75rem;
   letter-spacing: .15em;
   text-transform: uppercase;
   color: var(--c-white);
   font-weight: 500;
   margin-bottom: 20px;
}

.footer-col a {
   display: block;
   font-size: .85rem;
   color: rgba(255, 255, 255, .5);
   margin-bottom: 10px;
   transition: color var(--transition);
}

.footer-col a:hover {
   color: var(--c-blue-sky);
}

.footer-social {
   display: flex;
   gap: 12px;
   margin-top: 8px;
}

.social-icon {
   width: 36px;
   height: 36px;
   border: 1px solid rgba(255, 255, 255, .15);
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   color: rgba(255, 255, 255, .5);
   font-size: .75rem;
   font-weight: 600;
   transition: var(--transition);
}

.social-icon:hover {
   border-color: var(--c-blue-sky);
   color: var(--c-blue-sky);
}

.footer-bottom {
   padding: 20px 0;
   border-top: 1px solid rgba(255, 255, 255, .06);
   display: flex;
   justify-content: space-between;
   align-items: center;
   font-size: .78rem;
   gap: 16px;
   flex-wrap: wrap;
}

.footer-legal {
   display: flex;
   gap: 24px;
}

.footer-legal a {
   color: rgba(255, 255, 255, .4);
   transition: color var(--transition);
}

.footer-legal a:hover {
   color: rgba(255, 255, 255, .7);
}


/* ============================================================
   22. RESPONSIVE
   ============================================================ */

/* ≤ 1024px */
@media (max-width: 1024px) {
   .services-grid {
      grid-template-columns: repeat(2, 1fr);
   }

   .testi-grid {
      grid-template-columns: repeat(2, 1fr);
   }

   .methodo-steps {
      grid-template-columns: repeat(2, 1fr);
   }

   .footer-main {
      grid-template-columns: 1fr 1fr;
      gap: 32px;
   }

   .expertise-item {
      gap: 48px;
   }
}

/* ≤ 768px */
@media (max-width: 768px) {
   :root {
      --nav-h: 60px;
   }

   .container {
      padding-inline: 20px;
   }

   .nav-links {
      display: none;
   }

   .burger {
      display: flex;
   }

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

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

   .methodo-steps {
      grid-template-columns: 1fr;
   }

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

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

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

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

   .forwhom-grid {
      grid-template-columns: 1fr;
      gap: 2.5rem;
   }

   .method-grid {
      grid-template-columns: 1fr;
      gap: 3rem;
   }

   .timeline-dual-container {
      grid-template-columns: 1fr;
      gap: 2rem;
   }

   .expertise-item,
   .expertise-item.reverse {
      grid-template-columns: 1fr;
      direction: ltr;
      gap: 32px;
   }

   .about-intro-grid {
      grid-template-columns: 1fr;
   }

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

   .contact-form {
      padding: 28px;
   }

   .form-row {
      grid-template-columns: 1fr;
   }

   .hero-stats {
      display: none;
   }

   .hero-layout {
      flex-direction: column;
      text-align: center;
   }

   .hero-photo {
      order: -1;
      width: 200px;
      height: 200px;
      margin-top: 100px;
      margin-bottom: -150px;
   }

   .services-header {
      flex-direction: column;
      align-items: flex-start;
   }

   .cta-inner {
      flex-direction: column;
      align-items: flex-start;
   }

   .footer-bottom {
      flex-direction: column;
      text-align: center;
   }

   .footer-legal {
      flex-wrap: wrap;
      justify-content: center;
   }
}

/* ≤ 600px */
@media (max-width: 600px) {
   .proof-grid {
      grid-template-columns: 1fr 1fr;
   }

   .proof-item {
      border-right: none;
      border-bottom: 1px solid rgba(0, 0, 0, 0.07);
   }

   .proof-item:last-child {
      border-bottom: none;
   }

   .fast-answer {
      padding: 1.25rem;
      margin: 1.5rem 0 0;
   }
}

/* ≤ 480px */
@media (max-width: 480px) {
   .footer-main {
      grid-template-columns: 1fr;
   }

   .hero-actions {
      flex-direction: column;
   }

   .btn {
      width: 100%;
      justify-content: center;
   }
}