body {
    margin: 0;
    font-family: 'Segoe UI', 'Arial', sans-serif;
    color: #222;
    background: #f5f8fa;
}
header {
    background: linear-gradient(90deg, #45b649 0%, #2980b9 100%);
    color: white;
    padding: 2rem 0 1rem 0;
    text-align: center;
    position: relative;
}
.logo {
    width: 110px;
    height: auto;
    margin-bottom: 1rem;
}
header h1 {
    margin: 0;
    font-size: 2.3rem;
    letter-spacing: 2px;
}
.slogan {
    font-size: 1.2rem;
    font-weight: 400;
    margin: .2rem 0 1.2rem 0;
}
nav {
    margin-top: 1rem;
}
nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 1.3rem;
    font-weight: 500;
    transition: text-shadow 0.2s;
}
nav a:hover {
    text-shadow: 0 0 5px #60fd6a;
}
.intro {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 3rem 7% 2rem 7%;
    background: #eaf5ec;
}
.intro-text {
    flex: 1 1 350px;
    min-width: 300px;
    padding-right: 2rem;
}
.intro-text h2 {
    font-size: 2rem;
    margin: 0 0 .5rem 0;
}
.intro-text .eco {
    color: #26ba63;
    font-weight: bold;
}
.intro-text ul {
    margin-top: 1rem;
    padding-left: 1.1rem;
}
.main-image {
    width: 410px;
    max-width: 96vw;
    border-radius: 1.5rem;
    box-shadow: 0 6px 30px #aaa4;
}
.vehicules {
    padding: 2.5rem 7%;
    background: #fff;
}
.vehicules h2 {
    text-align: center;
    margin-bottom: 2rem;
}
.vehicule-cards {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}
.vehicule-card {
    background: #f7fafc;
    border-radius: 1.3rem;
    box-shadow: 0 2px 18px #cdecd2a3;
    padding: 2rem 2rem 2rem 2rem;
    max-width: 370px;
    text-align: center;
    min-width: 260px;
    transition: transform 0.15s;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.vehicule-card:hover {
    transform: translateY(-6px) scale(1.04);
}
.vehicule-img {
    width: 180px;
    height: auto;
    margin-bottom: 1.2rem;
    border-radius: 1rem;
    box-shadow: 0 3px 16px #b0e9cc80;
}
.valeurs {
    background: #f5f8fa;
    padding: 2.5rem 7%;
}
.valeurs h2 {
    text-align: center;
}
.valeurs-cards {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}
.valeur-card {
    background: #e3fce9;
    border-radius: 1.3rem;
    box-shadow: 0 2px 16px #b6efc7a2;
    padding: 2rem 2rem 2rem 2rem;
    max-width: 350px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.valeur-img {
    width: 120px;
    height: auto;
    margin-bottom: 1.1rem;
    border-radius: 1rem;
    box-shadow: 0 3px 14px #a5efba8a;
}
.contact {
    background: #fff;
    padding: 2.5rem 7%;
}
.contact-center {
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
}
.contact h2, .contact p {
    text-align: center;
}
.contact-form {
    margin: 2rem auto 0 auto;
    max-width: 370px;
    background: #f5f8fa;
    padding: 1.6rem;
    border-radius: 1.2rem;
    box-shadow: 0 2px 10px #b2d9c3a7;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.contact-form input, .contact-form textarea {
    border: 1px solid #b9efc2;
    border-radius: 6px;
    padding: .7rem;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
}
.contact-form button {
    background: linear-gradient(90deg, #45b649 0%, #2980b9 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    padding: .8rem;
    font-weight: bold;
    cursor: pointer;
    transition: box-shadow 0.18s;
}
.contact-form button:hover {
    box-shadow: 0 0 8px #73fd97;
}
footer {
    background: #2980b9;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    font-size: 1rem;
    margin-top: 2rem;
    letter-spacing: 1px;
}
@media (max-width: 1100px) {
    .vehicule-cards, .valeurs-cards {
        flex-direction: column;
        align-items: center;
    }
}
@media (max-width: 900px) {
    .intro, .vehicules, .valeurs, .contact {
        padding: 1.5rem 2vw;
    }
    .main-image {
        margin: 2rem auto 0 auto;
        display: block;
        width: 96vw;
        max-width: 410px;
    }
    .vehicule-card, .valeur-card {
        max-width: 98vw;
        min-width: 200px;
        padding: 1.1rem;
    }
    .vehicule-img, .valeur-img {
        width: 110px;
    }
}