:root {
    --ink: #10202f;
    --ink-soft: #4f6072;
    --navy: #071d36;
    --navy-2: #0f3458;
    --blue: #2c89d8;
    --blue-soft: #e7f2fd;
    --paper: #f7f4ee;
    --white: #ffffff;
    --line: rgba(16, 32, 47, 0.12);
    --shadow: 0 30px 80px rgba(7, 29, 54, 0.16);
    --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Inter', Arial, sans-serif;
    color: var(--ink);
    background: var(--paper);
    line-height: 1.65;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247, 244, 238, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.header-inner {
    min-height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 26px;
}
.brand img { width: 166px; }
.main-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 800; color: var(--navy); }
.main-nav a { transition: color .2s ease, transform .2s ease; }
.main-nav a:hover { color: var(--blue); transform: translateY(-1px); }
.nav-cta { padding: 11px 18px; border-radius: 999px; background: var(--navy); color: var(--white) !important; }
.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 27px; height: 2px; margin: 6px 0; background: var(--navy); }

.hero {
    position: relative;
    min-height: 780px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: radial-gradient(circle at 15% 25%, rgba(44, 137, 216, .30), transparent 30%), linear-gradient(135deg, var(--navy) 0%, #0b294a 55%, #123f68 100%);
    color: var(--white);
}
.hero::after {
    content: '';
    position: absolute;
    inset: auto -15% -35% 45%;
    height: 520px;
    background: rgba(255,255,255,.08);
    border-radius: 50%;
    filter: blur(2px);
}
.hero-visual {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(90deg, rgba(7, 29, 54, .96), rgba(7, 29, 54, .58)), url('../img/ordinateur-portable-au-salon-aeroport-1280x853.jpg');
    background-size: cover;
    background-position: center;
    opacity: .72;
}
.hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 390px;
    align-items: center;
    gap: 72px;
    padding: 96px 0;
}
.eyebrow {
    margin: 0 0 14px;
    color: var(--blue);
    text-transform: uppercase;
    letter-spacing: .18em;
    font-size: 12px;
    font-weight: 900;
}
.hero h1 {
    max-width: 780px;
    margin: 0;
    font-size: clamp(44px, 6.8vw, 86px);
    line-height: .98;
    letter-spacing: -0.065em;
}
.hero-lead {
    max-width: 680px;
    margin: 28px 0 0;
    color: rgba(255,255,255,.82);
    font-size: 19px;
}
.hero-actions, .contact-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 900;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--blue); color: var(--white); box-shadow: 0 20px 40px rgba(44, 137, 216, .28); }
.btn-light { color: var(--white); border: 1px solid rgba(255,255,255,.34); }
.profile-card {
    overflow: hidden;
    border-radius: 34px;
    background: rgba(255,255,255,.09);
    border: 1px solid rgba(255,255,255,.18);
    box-shadow: var(--shadow);
}
.profile-image { background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02)); }
.profile-image img { width: 100%; height: 430px; object-fit: cover; object-position: top center; }
.profile-body { padding: 28px; }
.profile-body p { margin: 0 0 6px; color: var(--blue); font-weight: 900; text-transform: uppercase; letter-spacing: .12em; font-size: 12px; }
.profile-body h2 { margin: 0; font-size: 30px; line-height: 1.1; }
.profile-body h3 { margin: 0; font-size: 20px; font-weight: 400; line-height: 1.1; }
.profile-body span { display: block; margin-top: 8px; color: rgba(255,255,255,.76); }

.metrics { margin-top: -55px; position: relative; z-index: 4; }
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
    overflow: hidden;
}
.metrics-grid div { padding: 30px; border-right: 1px solid var(--line); }
.metrics-grid div:last-child { border-right: 0; }
.metrics-grid strong { display: block; font-size: 38px; line-height: 1; color: var(--navy); letter-spacing: -0.04em; }
.metrics-grid span { display: block; margin-top: 8px; color: var(--ink-soft); font-weight: 700; }

.section { padding: 105px 0; }
.intro-grid, .approach-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.intro-text h2, .section-heading h2, .approach h2, .contact h2 {
    margin: 0;
    color: var(--navy);
    font-size: clamp(34px, 4.6vw, 58px);
    line-height: 1.02;
    letter-spacing: -0.05em;
}
.intro-text p, .section-heading p, .approach p, .contact p { color: var(--ink-soft); font-size: 17px; }
.expertise-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.expertise-list article {
    padding: 28px;
    border-radius: 24px;
    background: var(--white);
    border: 1px solid var(--line);
    box-shadow: 0 12px 40px rgba(7, 29, 54, .06);
}
.expertise-list h3 { margin: 0 0 10px; color: var(--navy); font-size: 20px; }
.expertise-list p { margin: 0; color: var(--ink-soft); }

.focus-section { background: var(--white); }
.section-heading { max-width: 720px; margin-bottom: 44px; }
.section-heading.compact { max-width: 780px; }
.focus-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.focus-card {
    position: relative;
    overflow: hidden;
    min-height: 310px;
    padding: 30px 24px 28px;
    border-radius: 26px;
    background: linear-gradient(180deg, #f9fbfe 0%, var(--paper) 100%);
    border: 1px solid var(--line);
    box-shadow: 0 14px 42px rgba(7, 29, 54, .06);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.focus-card::before {
    content: '';
    position: absolute;
    inset: -80px -90px auto auto;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(44, 137, 216, .12);
}
.focus-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 24px 60px rgba(7, 29, 54, .11);
    border-color: rgba(44, 137, 216, .34);
}
.focus-icon {
    position: relative;
    width: 112px;
    height: 112px;
    display: grid;
    place-items: center;
    margin-bottom: 28px;
    border-radius: 28px;
    background: var(--blue-soft);
    border: 1px solid rgba(44, 137, 216, .18);
}
.focus-icon img { width: 74px; height: 74px; object-fit: contain; }
.focus-card h3 { margin: 0 0 12px; font-size: 19px; line-height: 1.2; color: var(--navy); }
.focus-card p { margin: 0; color: var(--ink-soft); font-size: 15px; line-height: 1.55; }

.approach { background: linear-gradient(180deg, #f7f4ee 0%, #eef4fb 100%); }
.approach blockquote {
    margin: 34px 0 0;
    padding: 26px 30px;
    background: var(--white);
    border-left: 4px solid var(--blue);
    border-radius: 22px;
    color: var(--navy);
    font-size: 19px;
    font-weight: 700;
    box-shadow: 0 15px 40px rgba(7, 29, 54, .06);
}
.approach blockquote span { display: block; margin-top: 10px; color: var(--ink-soft); font-size: 14px; }
.steps { display: grid; gap: 16px; }
.step-card {
    display: grid;
    grid-template-columns: 68px 1fr;
    gap: 22px;
    padding: 24px;
    border-radius: 24px;
    background: var(--white);
    border: 1px solid var(--line);
}
.step-card > span {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--blue-soft);
    color: var(--blue);
    font-weight: 900;
}
.step-card h3 { margin: 0 0 6px; color: var(--navy); }
.step-card p { margin: 0; color: var(--ink-soft); }

.patents { background: var(--navy); color: var(--white); }
.patents .section-heading h2 { color: var(--white); }
.patents .section-heading p { color: rgba(255,255,255,.72); }
.patent-table { display: grid; gap: 12px; }
.patent-table article {
    display: grid;
    grid-template-columns: 90px 1fr 160px;
    gap: 22px;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,.14);
}
.patent-table time { color: var(--blue); font-weight: 900; }
.patent-table h3 { margin: 0; font-size: 17px; line-height: 1.4; }
.patent-table span { color: rgba(255,255,255,.66); font-weight: 800; text-align: right; }

.testimonials {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 18% 18%, rgba(119, 188, 255, .38), transparent 30%),
        radial-gradient(circle at 82% 72%, rgba(255, 255, 255, .24), transparent 30%),
        linear-gradient(135deg, #123f68 0%, #0f3458 46%, #1f6ea8 100%);
    color: var(--white);
}
.testimonials::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: .46;
    background-image:
        radial-gradient(circle, rgba(255,255,255,.95) 0 1px, transparent 1.6px),
        radial-gradient(circle, rgba(255,255,255,.72) 0 1px, transparent 1.4px);
    background-size: 88px 88px, 142px 142px;
    background-position: 0 0, 34px 58px;
}
.testimonials::after {
    content: '';
    position: absolute;
    left: 8%;
    right: 8%;
    top: 48%;
    height: 1px;
    opacity: .38;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .85), transparent);
}
.testimonials .container {
    position: relative;
    z-index: 1;
}
.testimonials .section-heading h2 { color: var(--white); text-shadow: 0 12px 30px rgba(0,0,0,.18); }
.testimonials .section-heading .eyebrow { color: #cfeaff; }
.testimonial-carousel {
    position: relative;
    padding: 8px 0 0;
}
.carousel-count {
    position: absolute;
    top: 34px;
    left: 50%;
    z-index: 8;
    transform: translateX(-50%);
    margin: 0;
    padding: 8px 16px;
    border-radius: 999px;
    color: #0f3458;
    background: rgba(255,255,255,.86);
    border: 1px solid rgba(255,255,255,.72);
    backdrop-filter: blur(14px);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .14em;
    white-space: nowrap;
}
.testimonial-stage {
    position: relative;
    min-height: 510px;
    display: grid;
    place-items: center;
    perspective: 1300px;
}
.testimonial-track {
    position: relative;
    width: 100%;
    height: 455px;
}
.testimonial-card {
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(520px, 78vw);
    min-height: 380px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 54px 40px 36px;
    border-radius: 32px;
    color: var(--ink);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .98), rgba(247, 244, 238, .98)),
        radial-gradient(circle at 18% 0%, rgba(119, 188, 255, .24), transparent 38%);
    border: 1px solid rgba(255, 255, 255, .82);
    box-shadow: 0 34px 90px rgba(3, 17, 32, .28);
    transform: translate(-50%, -50%) scale(.58);
    opacity: 0;
    pointer-events: none;
    transition: transform .48s cubic-bezier(.2,.8,.2,1), opacity .48s ease, filter .48s ease, z-index .48s ease;
    overflow: hidden;
}
.testimonial-card::before,
.testimonial-card::after {
    content: '';
    position: absolute;
    pointer-events: none;
}
.testimonial-card::before {
    inset: 18px;
    border-radius: 24px;
    border: 1px solid rgba(44, 137, 216, .18);
}
.testimonial-card::after {
    top: 25px;
    left: 50%;
    width: 170px;
    height: 1px;
    transform: translateX(-50%);
    background: linear-gradient(90deg, transparent, rgba(44, 137, 216, .88), transparent);
}
.testimonial-card.is-active {
    z-index: 5;
    opacity: 1;
    pointer-events: auto;
    filter: none;
    transform: translate(-50%, -50%) translateZ(80px) scale(1);
}
.testimonial-card.is-prev {
    z-index: 3;
    opacity: .62;
    filter: blur(1.2px) saturate(.95);
    transform: translate(-98%, -50%) rotateY(20deg) rotateZ(-5deg) scale(.82);
}
.testimonial-card.is-next {
    z-index: 3;
    opacity: .62;
    filter: blur(1.2px) saturate(.95);
    transform: translate(-2%, -50%) rotateY(-20deg) rotateZ(5deg) scale(.82);
}
.testimonial-card.is-hidden {
    z-index: 1;
    opacity: 0;
    filter: blur(5px);
    transform: translate(-50%, -50%) scale(.64);
}
.quote-mark {
    position: relative;
    z-index: 1;
    display: block;
    height: 30px;
    color: var(--blue);
    font-size: 68px;
    line-height: .55;
    font-family: Georgia, serif;
}
.testimonial-card p {
    position: relative;
    z-index: 1;
    margin: 20px 0 28px;
    color: var(--ink-soft);
    font-size: 16px;
    line-height: 1.8;
}
.testimonial-author {
    position: relative;
    z-index: 1;
    padding-top: 20px;
    border-top: 1px solid rgba(44, 137, 216, .16);
}
.testimonial-card strong {
    display: block;
    color: var(--navy);
    font-size: 17px;
}
.testimonial-card span {
    display: block;
    margin-top: 3px;
    color: var(--ink-soft);
    font-size: 14px;
}
.carousel-btn {
    position: absolute;
    top: 50%;
    z-index: 7;
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 16px;
    background: rgba(255,255,255,.88);
    color: var(--navy);
    font-size: 38px;
    line-height: 1;
    cursor: pointer;
    backdrop-filter: blur(14px);
    box-shadow: 0 20px 46px rgba(3,17,32,.20);
    transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.carousel-btn:hover {
    transform: translateY(-50%) scale(1.04);
    background: var(--blue);
    border-color: rgba(255,255,255,.92);
    color: var(--white);
}
.carousel-btn-prev { left: 0; transform: translateY(-50%); }
.carousel-btn-next { right: 0; transform: translateY(-50%); }
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}
.carousel-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 999px;
    background: rgba(255,255,255,.64);
    cursor: pointer;
    transition: width .2s ease, background .2s ease, border-color .2s ease;
}
.carousel-dot.is-active {
    width: 32px;
    background: var(--white);
    border-color: var(--white);
}

.contact { padding: 105px 0; background: var(--paper); }
.contact-box {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
    gap: 46px;
    align-items: start;
    padding: 52px;
    border-radius: 32px;
    background: var(--white);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.email-line { color: var(--blue); font-weight: 900; }
.site-footer { background: var(--navy); color: var(--white); padding: 42px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 34px; }
.footer-inner img { width: 145px; }
.footer-inner p { max-width: 460px; color: rgba(255,255,255,.72); margin: 14px 0 0; }
.footer-inner a { display: block; color: var(--blue); margin-top: 8px; font-weight: 800; }

@media (max-width: 980px) {
    .hero { min-height: auto; }
    .hero-grid, .intro-grid, .approach-grid, .contact-box { grid-template-columns: 1fr; }
    .hero-grid { gap: 42px; padding: 76px 0 110px; }
    .profile-card { max-width: 440px; }
    .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    .focus-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonial-card { width: min(500px, 76vw); }
    .testimonial-card.is-prev { transform: translate(-94%, -50%) rotateY(18deg) rotateZ(-4deg) scale(.78); }
    .testimonial-card.is-next { transform: translate(-6%, -50%) rotateY(-18deg) rotateZ(4deg) scale(.78); }
    .carousel-btn-prev { left: 4px; }
    .carousel-btn-next { right: 4px; }
    .focus-card { min-height: 280px; }
    .patent-table article { grid-template-columns: 70px 1fr; }
    .patent-table span { grid-column: 2; text-align: left; }
}

@media (max-width: 760px) {
    .container { width: min(100% - 28px, 1160px); }
    .header-inner { min-height: 72px; }
    .brand img { width: 145px; }
    .nav-toggle { display: block; }
    .main-nav {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 76px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 12px;
        border-radius: 22px;
        background: var(--white);
        box-shadow: var(--shadow);
        border: 1px solid var(--line);
    }
    .main-nav.is-open { display: flex; }
    .main-nav a { padding: 14px 16px; border-radius: 14px; }
    .nav-cta { text-align: center; }
    .hero-grid { padding: 58px 0 96px; }
    .hero h1 { font-size: clamp(40px, 14vw, 62px); }
    .hero-lead { font-size: 17px; }
    .profile-image img { height: 390px; }
    .metrics { margin-top: -42px; }
    .metrics-grid, .expertise-list, .focus-grid { grid-template-columns: 1fr; }
    .testimonial-carousel { padding: 0; }
    .carousel-count { top: 4px; font-size: 11px; }
    .testimonial-stage { min-height: 560px; }
    .testimonial-track { height: 500px; }
    .testimonial-card { width: calc(100% - 14px); min-height: 420px; padding: 50px 26px 30px; }
    .testimonial-card p { font-size: 15px; line-height: 1.7; }
    .testimonial-card.is-prev,
    .testimonial-card.is-next { opacity: 0; filter: blur(5px); transform: translate(-50%, -50%) scale(.82); }
    .carousel-btn { top: auto; bottom: 12px; width: 48px; height: 48px; border-radius: 14px; font-size: 32px; }
    .carousel-btn-prev { left: calc(50% - 62px); transform: none; }
    .carousel-btn-next { right: calc(50% - 62px); transform: none; }
    .carousel-btn:hover { transform: scale(1.04); }
    .carousel-dots { margin-top: 8px; }
    .focus-card { min-height: auto; }
    .focus-icon { width: 98px; height: 98px; margin-bottom: 22px; }
    .focus-icon img { width: 66px; height: 66px; }
    .metrics-grid div { border-right: 0; border-bottom: 1px solid var(--line); }
    .metrics-grid div:last-child { border-bottom: 0; }
    .section { padding: 74px 0; }
    .contact { padding: 74px 0; }
    .contact-box { padding: 32px 24px; }
    .footer-inner { align-items: flex-start; flex-direction: column; }
}


.contact-form {
    display: grid;
    gap: 16px;
    width: 100%;
}
.form-row {
    display: grid;
    gap: 8px;
}
.form-row label {
    color: var(--navy);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .06em;
    text-transform: uppercase;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 14px 16px;
    color: var(--ink);
    background: #fbfaf7;
    font: inherit;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: rgba(44, 137, 216, .62);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(44, 137, 216, .12);
}
.contact-form button {
    border: 0;
    cursor: pointer;
    justify-self: start;
}
.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}
.form-status {
    margin-top: 22px;
    padding: 14px 16px;
    border-radius: 16px;
    font-weight: 800;
}
.form-status.success {
    color: #155724;
    background: #d4edda;
    border: 1px solid #c3e6cb;
}
.form-status.error {
    color: #721c24;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
}