```css
/* =========================================================
   KAHRAMAN CONSULTING
   Responsive stylesheet
   ========================================================= */


/* =========================================================
   TABLETTES
   Jusqu'à 1100px
   ========================================================= */

@media (max-width: 1100px) {

    /* ---------- NAVIGATION ---------- */

    .navbar {
        height: 80px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-links > a {
        font-size: 12px;
    }


    /* ---------- HERO ---------- */

    .hero h1 {
        max-width: 750px;
    }


    /* ---------- SERVICES ---------- */

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

    .service-card {
        min-height: 350px;
    }


    /* ---------- PROCESS ---------- */

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

    .process-item:nth-child(2) {
        border-right: none;
    }

    .process-item:nth-child(-n + 2) {
        border-bottom: 1px solid var(--border);
    }


    /* ---------- FOOTER ---------- */

    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 40px;
    }
}


/* =========================================================
   TABLETTES / PETITS ÉCRANS
   Jusqu'à 850px
   ========================================================= */

@media (max-width: 850px) {

    /* ---------- GLOBAL ---------- */

    .section {
        padding: 90px 0;
    }


    /* ---------- NAVIGATION ---------- */

    .nav-links {
        position: fixed;

        top: 80px;
        right: -100%;

        width: 100%;
        height: calc(100vh - 80px);

        padding: 50px 8%;

        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;

        gap: 28px;

        background: rgba(8, 8, 8, 0.98);

        transition: right 0.4s ease;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links > a {
        font-size: 18px;
    }

    .nav-cta {
        margin-top: 15px;
    }

    .menu-toggle {
        display: block;
        z-index: 1001;
    }


    /* ---------- HERO ---------- */

    .hero {
        min-height: 100svh;

        background-position: 60% center;
    }

    .hero-content {
        margin-top: 80px;
    }

    .hero h1 {
        max-width: 650px;

        font-size: clamp(48px, 9vw, 72px);
        letter-spacing: -3px;
    }

    .hero-description {
        max-width: 550px;

        font-size: 15px;
    }

    .hero-buttons {
        flex-wrap: wrap;
    }


    /* ---------- INTRO ---------- */

    .intro-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .section-label {
        margin-bottom: 0;
    }


    /* ---------- SECTION HEADINGS ---------- */

    .section-heading {
        grid-template-columns: 1fr;
        gap: 25px;

        margin-bottom: 50px;
    }


    /* ---------- SERVICES ---------- */

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


    /* ---------- FOOTER ---------- */

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

    .footer-grid > div:first-child {
        grid-column: 1 / -1;
    }
}


/* =========================================================
   SMARTPHONES
   Jusqu'à 600px
   ========================================================= */

@media (max-width: 600px) {

    /* ---------- GLOBAL ---------- */

    .container {
        width: 88%;
    }

    .section {
        padding: 75px 0;
    }

    h2 {
        font-size: 42px;
        letter-spacing: -1.8px;
    }


    /* ---------- NAVIGATION ---------- */

    .navbar {
        width: 88%;
        height: 75px;
    }

    .nav-links {
        top: 75px;
        height: calc(100vh - 75px);
    }


    /* ---------- HERO ---------- */

    .hero {
        min-height: 100svh;

        background-position: 63% center;
    }

    .hero-content {
        width: 88%;
        margin-top: 70px;
    }

    .hero-eyebrow {
        font-size: 10px;
        letter-spacing: 3px;
        margin-bottom: 20px;
    }

    .hero h1 {
        font-size: clamp(43px, 13vw, 64px);

        letter-spacing: -2.5px;
        line-height: 1;
    }

    .hero-description {
        margin-top: 25px;

        font-size: 14px;
        line-height: 1.7;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;

        margin-top: 30px;
    }

    .btn {
        width: 100%;
    }

    .hero-scroll {
        display: none;
    }


    /* ---------- INTRO ---------- */

    .intro-content h2 {
        margin-bottom: 25px;
    }

    .intro-content > p:not(.subtitle) {
        font-size: 15px;
        line-height: 1.8;
    }


    /* ---------- SERVICES ---------- */

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

    .service-card {
        min-height: 330px;
        padding: 35px 25px;
    }

    .service-card h3 {
        font-size: 21px;
    }


    /* ---------- PROCESS ---------- */

    .process-grid {
        grid-template-columns: 1fr;

        margin-top: 50px;
    }

    .process-item {
        min-height: auto;

        padding: 35px 0;

        border-right: none !important;
        border-bottom: 1px solid var(--border);
    }

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

    .process-item h3 {
        margin-top: 30px;
    }


    /* ---------- CTA ---------- */

    .cta {
        padding: 90px 0;
    }

    .cta h2 {
        font-size: 42px;
    }


    /* ---------- FOOTER ---------- */

    .footer {
        padding: 65px 0 25px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 45px;

        padding-bottom: 45px;
    }

    .footer-grid > div:first-child {
        grid-column: auto;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
    }

    .footer-bottom > div {
        flex-direction: column;
        gap: 10px;
    }
}


/* =========================================================
   TRÈS PETITS SMARTPHONES
   Jusqu'à 380px
   ========================================================= */

@media (max-width: 380px) {

    .logo span {
        font-size: 15px;
    }

    .logo small {
        font-size: 7px;
        letter-spacing: 3px;
    }

    .hero h1 {
        font-size: 42px;
    }

    h2,
    .cta h2 {
        font-size: 36px;
    }

    .service-card {
        min-height: 320px;
    }
}


/* =========================================================
   ACCESSIBILITÉ
   Réduction des animations si demandée par le système
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
```