:root {
    --black: #000000;
    --white: #ffffff;
    --gray-light: #f8f8f8;
    --gray-medium: #e0e0e0;
    --gray-text: #666666;
    --font-serif: 'Newsreader', serif;
    --font-sans: 'Inter', sans-serif;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: var(--font-sans);
    background-color: var(--white);
    color: var(--black);
    line-height: 1.5;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    display: block;
}
main {
    min-height: calc(100vh - 80px);
}
.page {
    padding: 120px 2rem 60px;
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeIn 0.8s ease-out forwards;
}
.page-narrow {
    max-width: 800px;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-medium);
    z-index: 1000;
    display: flex;
    align-items: center;
}
.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    color: var(--black);
}
.logo-sub {
    font-family: var(--font-sans);
    font-size: 0.6rem;
    vertical-align: top;
    color: var(--gray-text);
    letter-spacing: 0.2em;
}
.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}
.nav-links a {
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--gray-text);
    transition: var(--transition);
    text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--black);
}
.btn-contact,
.btn-submit,
.filter-btn {
    font-family: inherit;
}
.btn-contact {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--black);
    color: var(--white);
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    transition: var(--transition);
}
.btn-contact:hover {
    transform: scale(1.05);
    background: #333;
}
.hero {
    padding: 4rem 0;
    max-width: 900px;
}
.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 1.1;
    font-weight: 400;
    margin-bottom: 2rem;
}
.serif-italic {
    font-style: italic;
    color: #aaa;
}
.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-text);
    line-height: 1.6;
    max-width: 600px;
    margin-bottom: 3rem;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
    border-top: 1px solid var(--gray-medium);
}
.stat-value {
    display: block;
    font-family: var(--font-serif);
    font-size: 3rem;
}
.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--gray-text);
}
.page-header {
    margin-bottom: 4rem;
}
.section-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    margin-bottom: 1rem;
}
.section-desc {
    font-size: 1rem;
    color: var(--gray-text);
    max-width: 640px;
}
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}
.filter-btn {
    background: none;
    border: 1px solid var(--gray-medium);
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    color: var(--black);
    transition: var(--transition);
}
.filter-btn.active,
.filter-btn:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 3rem;
}
.startup-card {
    transition: var(--transition);
    cursor: pointer;
}
.startup-card::after {
    content: 'En savoir plus \2192';
    display: block;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-text);
    margin-top: 1.25rem;
    opacity: 0;
    transform: translateX(-4px);
    transition: var(--transition);
}
.startup-card:hover::after {
    opacity: 1;
    transform: translateX(0);
}
.startup-card:hover {
    transform: translateY(-8px);
}
.startup-image {
    aspect-ratio: 16/10;
    background: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-medium);
    margin-bottom: 1.5rem;
    overflow: hidden;
}
.startup-logo-text {
    font-family: var(--font-serif);
    font-size: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    opacity: 0.3;
}
.startup-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-text);
    margin-bottom: 0.5rem;
}
.startup-name {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}
.startup-desc {
    font-size: 0.9rem;
    color: var(--gray-text);
    line-height: 1.5;
}
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 4rem 2rem;
}
.member-photo {
    aspect-ratio: 3/4;
    background: var(--gray-light);
    margin-bottom: 1.5rem;
    border-radius: 2px;
    transition: var(--transition);
}
.team-member:hover .member-photo {
    background: #eee;
}
.member-name {
    font-size: 1.1rem;
    font-weight: 600;
}
.member-role {
    font-size: 0.8rem;
    color: var(--gray-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.25rem;
}
.news-list {
    max-width: 800px;
    margin: 0 auto;
}
.news-item {
    padding: 3rem 0;
    border-bottom: 1px solid var(--gray-medium);
    text-decoration: none;
    display: block;
    color: inherit;
}
.news-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-text);
    margin-bottom: 1.25rem;
}
.news-title {
    font-family: var(--font-serif);
    font-size: 1.85rem;
    line-height: 1.3;
    transition: var(--transition);
}
.news-item:hover .news-title {
    color: var(--gray-text);
}
.contact-container {
    max-width: 720px;
    margin: 0 auto;
}
.contact-header {
    margin-bottom: 3rem;
}
.contact-process {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 4rem;
    padding: 2rem 2.5rem;
    background: var(--gray-light);
    border-radius: 12px;
}
.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    text-align: center;
}
.process-num {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 300;
}
.process-text {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-text);
}
.process-divider {
    width: 60px;
    height: 1px;
    background: var(--gray-medium);
    flex-shrink: 0;
}
.contact-form {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}
.form-group label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
    color: var(--gray-text);
    font-weight: 600;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    border: none;
    border-bottom: 1px solid var(--gray-medium);
    padding: 1rem 0;
    font-family: inherit;
    font-size: 1.1rem;
    outline: none;
    transition: border-color 0.3s;
    background: transparent;
    color: var(--black);
    -webkit-appearance: none;
    appearance: none;
}
.form-group select {
    cursor: pointer;
}
.form-group textarea {
    resize: none;
    line-height: 1.6;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--black);
}
.btn-submit {
    background: var(--black);
    color: var(--white);
    border: none;
    padding: 1.25rem 2.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: 1rem;
    align-self: flex-start;
    transition: var(--transition);
}
.btn-submit:hover {
    background: #333;
    transform: translateY(-2px);
}
.feedback {
    display: none;
    margin-top: 3rem;
    padding: 2rem;
    background: var(--gray-light);
    border-radius: 12px;
    text-align: center;
    font-size: 0.95rem;
    line-height: 1.7;
}
/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}
.modal-card {
    background: var(--white);
    max-width: 620px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 4px;
    transform: translateY(24px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}
.modal-overlay.open .modal-card {
    transform: translateY(0);
}
.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--gray-medium);
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 1;
    line-height: 1;
}
.modal-close:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}
.modal-image {
    aspect-ratio: 16/7;
    background: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--gray-medium);
}
.modal-body {
    padding: 2.5rem;
}
.modal-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gray-text);
    margin-bottom: 0.75rem;
}
.modal-title {
    font-family: var(--font-serif);
    font-size: 2.75rem;
    font-weight: 400;
    line-height: 1.15;
    margin-bottom: 0.5rem;
}
.modal-tagline {
    font-size: 1rem;
    color: var(--gray-text);
    font-style: italic;
    margin-bottom: 2.5rem;
}
.modal-section-title {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: #aaa;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-medium);
}
.modal-desc {
    font-size: 0.95rem;
    line-height: 1.85;
    color: var(--black);
    margin-bottom: 2.5rem;
}
.modal-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-medium);
}
.modal-highlight-item {
    text-align: center;
}
.modal-highlight-value {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: 0.35rem;
}
.modal-highlight-label {
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-text);
}
/* Newsletter */
.newsletter-section {
    background: var(--black);
    color: var(--white);
    padding: 5rem 2rem;
}
.newsletter-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}
.newsletter-text h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}
.newsletter-text p {
    font-size: 0.9rem;
    opacity: 0.55;
    max-width: 320px;
}
.newsletter-form {
    display: flex;
    flex: 1;
    max-width: 420px;
    min-width: 260px;
}
.newsletter-input {
    flex: 1;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.06);
    color: var(--white);
    padding: 0.95rem 1.25rem;
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    border-radius: 50px 0 0 50px;
    transition: border-color 0.3s;
}
.newsletter-input::placeholder {
    color: rgba(255,255,255,0.35);
}
.newsletter-input:focus {
    border-color: rgba(255,255,255,0.5);
}
.newsletter-btn {
    background: var(--white);
    color: var(--black);
    border: none;
    padding: 0.95rem 1.5rem;
    border-radius: 0 50px 50px 0;
    font-family: inherit;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}
.newsletter-btn:hover {
    background: #ddd;
}
.newsletter-success {
    display: none;
    font-size: 0.85rem;
    opacity: 0.65;
    font-style: italic;
}
/* Startup individual page */
.breadcrumb {
    margin-bottom: 3rem;
}
.breadcrumb a {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-text);
    text-decoration: none;
    transition: color 0.2s;
}
.breadcrumb a:hover {
    color: var(--black);
}
.startup-hero {
    max-width: 800px;
    margin-bottom: 4rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid var(--gray-medium);
}
.startup-hero-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gray-text);
    margin-bottom: 1rem;
}
.startup-hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3.5rem, 10vw, 6rem);
    font-weight: 400;
    line-height: 1.05;
    margin-bottom: 1rem;
}
.startup-hero-tagline {
    font-size: 1.15rem;
    color: var(--gray-text);
    font-style: italic;
    line-height: 1.5;
}
.startup-page-image {
    aspect-ratio: 16/6;
    background: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-medium);
    margin-bottom: 4rem;
}
.startup-page-content {
    max-width: 720px;
}
.startup-page-section-title {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: #aaa;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-medium);
}
.startup-page-desc {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--black);
    margin-bottom: 4rem;
}
.startup-page-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    padding: 3rem 0;
    border-top: 1px solid var(--gray-medium);
}
.startup-page-highlights .modal-highlight-value {
    font-size: 2.5rem;
}
.startup-page-highlights .modal-highlight-item {
    text-align: left;
}
/* À propos page */
.about-intro {
    max-width: 800px;
    margin-bottom: 6rem;
    padding-bottom: 6rem;
    border-bottom: 1px solid var(--gray-medium);
}
.about-desc {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--black);
    margin-top: 1.5rem;
}
.about-pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--gray-medium);
}
.pillar h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.75rem;
}
.pillar p {
    font-size: 0.9rem;
    color: var(--gray-text);
    line-height: 1.65;
}
.team-section-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 3rem;
}
.site-footer {
    background: var(--white);
    border-top: 1px solid var(--gray-medium);
    padding: 5rem 2rem 3rem;
    margin-top: auto;
}
.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 4rem;
}
.footer-brand .logo {
    cursor: default;
}
.footer-brand p {
    font-size: 0.9rem;
    color: var(--gray-text);
    margin-top: 1.5rem;
    max-width: 250px;
}
.footer-nav {
    display: flex;
    gap: 5rem;
}
.footer-col h4 {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 2rem;
    color: #999;
}
.footer-col a {
    display: block;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-decoration: none;
    color: var(--black);
    transition: color 0.2s;
}
.footer-col a:hover,
.footer-col a.active {
    color: var(--gray-text);
}
.footer-bottom {
    max-width: 1200px;
    margin: 5rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-light);
    font-size: 0.7rem;
    color: #999;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}
@media (max-width: 768px) {
    .nav-links,
    .btn-contact-nav {
        display: none;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .footer-content,
    .footer-nav,
    .footer-bottom {
        flex-direction: column;
    }
    .footer-nav {
        gap: 2rem;
    }
    .portfolio-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    .startup-page-highlights,
    .about-pillars {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .page {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .contact-process {
        flex-direction: column;
        gap: 1.5rem;
    }
    .process-divider {
        width: 1px;
        height: 24px;
    }
    .newsletter-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .newsletter-form {
        width: 100%;
        max-width: 100%;
    }
    .btn-submit {
        align-self: stretch;
        text-align: center;
    }
}