:root {
    /* Palette de couleurs professionnelle */
    --pine: #67c1b9;         /* Couleur principale - Vert profond */
    --terracotta: #01222b;   /* Accent chaleureux */
    --sand: #F2CC8F;         /* Accent doux */
    --cream: #FFFFF0;        /* Fond secondaire */
    --white: #FFFFFF;        /* Fond principal */
    --ivory: #F8FAFC;        /* Fond tertiaire */
    --warm-gray: #4B5563;    /* Texte */
    
    /* Couleurs avec opacité */
    --pine-10: rgba(6, 95, 70, 0.1);
    --pine-05: rgba(6, 95, 70, 0.05);
    --sage-15: rgba(16, 185, 129, 0.15);
    --terracotta-15: rgba(224, 122, 95, 0.15);
    --sand-15: rgba(242, 204, 143, 0.15);
    
    /* Espacements */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    
    /* Typographie */
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
}

body {
    font-family: 'Poppins', Arial, sans-serif;
    margin: 0;
    background: var(--white);
    color: var(--warm-gray);
}

/* HEADER / NAVIGATION */
.landing-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 4vw 1.5rem 4vw;
    background: var(--white);
    border-bottom: 1px solid var(--ivory);
}
.landing-logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}
.landing-logo img {
    height: 38px;
}
.landing-logo span {
    font-size: 2rem;
    font-weight: 600;
    color: var(--pine);
    letter-spacing: 1px;
}
.landing-nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}
.landing-nav a {
    text-decoration: none;
    color: var(--terracotta);
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.2s;
}
.landing-nav a:hover {
    color: var(--pine);
}
.landing-btn {
    background: var(--pine);
    color: var(--white);
    border: none;
    border-radius: 24px;
    padding: 0.7rem 1.7rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-left: 1.5rem;
    text-decoration: none;
    display: inline-block;
}
.landing-btn:hover {
    background: var(--pine-10);
    color: var(--terracotta);
}
@media (max-width: 700px) {
    .landing-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.2rem 4vw 1.2rem 4vw;
    }
    .landing-nav {
        margin-top: 1rem;
        gap: 1.2rem;
        flex-direction: column;
        align-items: flex-start;
    }
    .landing-logo img {
        height: 32px;
    }
    .landing-logo span {
        font-size: 1.3rem;
    }
}

/***** HERO *****/
.landing-hero {
    background: var(--white);
    padding: 5rem 0 3rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}
.hero-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
}
.landing-hero h1 {
    font-size: 2.7rem;
    font-weight: 700;
    color: var(--terracotta);
    margin-bottom: 1.2rem;
    line-height: 1.15;
}
.hero-subtitle {
    font-size: 1.25rem;
    color: var(--warm-gray);
    margin-bottom: 2.2rem;
    line-height: 1.5;
}
.highlight {
    color: var(--pine);
    font-weight: 600;
}
.hero-btn {
    font-size: 1.15rem;
    padding: 0.9rem 2.2rem;
    border-radius: 30px;
    box-shadow: 0 2px 12px var(--pine-10);
}

/***** BENEFITS *****/
.landing-benefits {
    background: var(--cream);
    padding: 4rem 0 3rem 0;
    text-align: center;
}
.landing-benefits h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    color: var(--terracotta);
}
.benefits-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem;
}
.benefit {
    background: var(--white);
    border-radius: 18px;
    box-shadow: 0 2px 12px var(--pine-05);
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    max-width: 270px;
    flex: 1 1 220px;
    min-width: 220px;
    text-align: left;
}
.benefit i {
    font-size: 2rem;
    color: var(--pine);
    margin-bottom: 1rem;
}
.benefit h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.7rem;
    color: var(--terracotta);
}
.benefit p {
    color: var(--warm-gray);
    font-size: 1rem;
    margin: 0;
}

/***** FEATURES *****/
.landing-features {
    background: var(--white);
    padding: 4rem 0 3rem 0;
    text-align: center;
}
.landing-features h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    color: var(--terracotta);
}
.features-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem;
}
.feature {
    background: var(--white);
    border-radius: 18px;
    box-shadow: 0 2px 12px var(--pine-05);
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    max-width: 250px;
    flex: 1 1 200px;
    min-width: 200px;
    text-align: left;
}
.feature i {
    font-size: 2rem;
    color: var(--pine);
    margin-bottom: 1rem;
}
.feature h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.7rem;
    color: var(--terracotta);
}
.feature p {
    color: var(--warm-gray);
    font-size: 1rem;
    margin: 0;
}

/***** HOW TO *****/
.landing-howto {
    background: var(--cream);
    padding: 4rem 0 3rem 0;
    text-align: center;
}
.landing-howto h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    color: var(--terracotta);
}
.howto-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2.5rem;
}
.howto-step {
    background: var(--white);
    border-radius: 18px;
    box-shadow: 0 2px 12px var(--pine-05);
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    max-width: 220px;
    flex: 1 1 180px;
    min-width: 180px;
    text-align: left;
    position: relative;
}
.step-number {
    display: inline-block;
    background: var(--pine);
    color: var(--white);
    font-weight: 700;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    text-align: center;
    line-height: 36px;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}
.howto-step h5 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.7rem;
    color: var(--terracotta);
}
.howto-step p {
    color: var(--warm-gray);
    font-size: 1rem;
    margin: 0;
}

/***** CTA *****/
.landing-cta {
    background: var(--white);
    padding: 4rem 0 3rem 0;
    text-align: center;
}
.landing-cta h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--terracotta);
}
.cta-btn {
    font-size: 1.15rem;
    padding: 1rem 2.5rem;
    border-radius: 30px;
    box-shadow: 0 2px 12px var(--pine-10);
    margin-bottom: 1.2rem;
}
.cta-note {
    color: var(--warm-gray);
    font-size: 1rem;
    margin-top: 0.5rem;
}

/***** FOOTER *****/
.landing-footer {
    background: var(--cream);
    padding: 2.5rem 0 1.5rem 0;
    border-top: 1px solid var(--ivory);
}
.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}
.footer-logo img {
    height: 32px;
}
.footer-logo span {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--pine);
    letter-spacing: 1px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}
.footer-links a {
    text-decoration: none;
    color: var(--terracotta);
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--pine);
}
.footer-contact {
    color: var(--warm-gray);
    font-size: 1rem;
}
.footer-contact a {
    color: var(--pine);
    text-decoration: none;
}
.footer-contact a:hover {
    text-decoration: underline;
}

/***** RESPONSIVE *****/
@media (max-width: 1100px) {
    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
}
@media (max-width: 900px) {
    .benefits-list, .features-list, .howto-steps {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
    .footer-content {
        padding: 0 1.5rem;
    }
}
@media (max-width: 700px) {
    .landing-hero {
        padding: 2.5rem 0 1.5rem 0;
    }
    .hero-content {
        padding: 0 1.2rem;
    }
    .landing-benefits, .landing-features, .landing-howto, .landing-cta {
        padding: 2.5rem 0 1.5rem 0;
    }
    .benefit, .feature, .howto-step {
        padding: 1.2rem 1rem 1rem 1rem;
        min-width: 0;
        max-width: 100%;
    }
}
@media (max-width: 500px) {
    .landing-hero h1 {
        font-size: 1.5rem;
    }
    .landing-benefits h2, .landing-features h2, .landing-howto h2, .landing-cta h2 {
        font-size: 1.2rem;
    }
    .footer-logo span {
        font-size: 1rem;
    }
}